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Comparing libev/ev.c (file contents):
Revision 1.141 by root, Mon Nov 26 20:33:58 2007 UTC vs.
Revision 1.296 by root, Thu Jul 9 09:11:20 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
159#endif 237#endif
160 238
161/**/ 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
245#endif
246
247#ifndef EV_PID_HASHSIZE
248# if EV_MINIMAL
249# define EV_PID_HASHSIZE 1
250# else
251# define EV_PID_HASHSIZE 16
252# endif
253#endif
254
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 */
162 304
163#ifndef CLOCK_MONOTONIC 305#ifndef CLOCK_MONOTONIC
164# undef EV_USE_MONOTONIC 306# undef EV_USE_MONOTONIC
165# define EV_USE_MONOTONIC 0 307# define EV_USE_MONOTONIC 0
166#endif 308#endif
… …
168#ifndef CLOCK_REALTIME 310#ifndef CLOCK_REALTIME
169# undef EV_USE_REALTIME 311# undef EV_USE_REALTIME
170# define EV_USE_REALTIME 0 312# define EV_USE_REALTIME 0
171#endif 313#endif
172 314
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
173#if EV_SELECT_IS_WINSOCKET 337#if EV_SELECT_IS_WINSOCKET
174# include <winsock.h> 338# include <winsock.h>
175#endif 339#endif
176 340
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
177/**/ 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 */
178 370
179#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) */
180#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) */
181#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
182/*#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 */
183 374
184#ifdef EV_H
185# include EV_H
186#else
187# include "ev.h"
188#endif
189
190#if __GNUC__ >= 3 375#if __GNUC__ >= 4
191# define expect(expr,value) __builtin_expect ((expr),(value)) 376# define expect(expr,value) __builtin_expect ((expr),(value))
192# define inline_size static inline /* inline for codesize */
193# if EV_MINIMAL
194# define noinline __attribute__ ((noinline)) 377# define noinline __attribute__ ((noinline))
195# define inline_speed static noinline
196# else
197# define noinline
198# define inline_speed static inline
199# endif
200#else 378#else
201# define expect(expr,value) (expr) 379# define expect(expr,value) (expr)
202# define inline_speed static
203# define inline_minimal static
204# define noinline 380# define noinline
381# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
382# define inline
383# endif
205#endif 384#endif
206 385
207#define expect_false(expr) expect ((expr) != 0, 0) 386#define expect_false(expr) expect ((expr) != 0, 0)
208#define expect_true(expr) expect ((expr) != 0, 1) 387#define expect_true(expr) expect ((expr) != 0, 1)
388#define inline_size static inline
209 389
390#if EV_MINIMAL
391# define inline_speed static noinline
392#else
393# define inline_speed static inline
394#endif
395
210#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397
398#if EV_MINPRI == EV_MAXPRI
399# define ABSPRI(w) (((W)w), 0)
400#else
211#define ABSPRI(w) ((w)->priority - EV_MINPRI) 401# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
402#endif
212 403
213#define EMPTY0 /* required for microsofts broken pseudo-c compiler */ 404#define EMPTY /* required for microsofts broken pseudo-c compiler */
214#define EMPTY2(a,b) /* used to suppress some warnings */ 405#define EMPTY2(a,b) /* used to suppress some warnings */
215 406
216typedef ev_watcher *W; 407typedef ev_watcher *W;
217typedef ev_watcher_list *WL; 408typedef ev_watcher_list *WL;
218typedef ev_watcher_time *WT; 409typedef ev_watcher_time *WT;
219 410
411#define ev_active(w) ((W)(w))->active
412#define ev_at(w) ((WT)(w))->at
413
414#if EV_USE_REALTIME
415/* sig_atomic_t is used to avoid per-thread variables or locking but still */
416/* giving it a reasonably high chance of working on typical architetcures */
417static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
418#endif
419
420#if EV_USE_MONOTONIC
220static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 421static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
422#endif
221 423
222#ifdef _WIN32 424#ifdef _WIN32
223# include "ev_win32.c" 425# include "ev_win32.c"
224#endif 426#endif
225 427
… …
232{ 434{
233 syserr_cb = cb; 435 syserr_cb = cb;
234} 436}
235 437
236static void noinline 438static void noinline
237syserr (const char *msg) 439ev_syserr (const char *msg)
238{ 440{
239 if (!msg) 441 if (!msg)
240 msg = "(libev) system error"; 442 msg = "(libev) system error";
241 443
242 if (syserr_cb) 444 if (syserr_cb)
… …
246 perror (msg); 448 perror (msg);
247 abort (); 449 abort ();
248 } 450 }
249} 451}
250 452
453static void *
454ev_realloc_emul (void *ptr, long size)
455{
456 /* some systems, notably openbsd and darwin, fail to properly
457 * implement realloc (x, 0) (as required by both ansi c-98 and
458 * the single unix specification, so work around them here.
459 */
460
461 if (size)
462 return realloc (ptr, size);
463
464 free (ptr);
465 return 0;
466}
467
251static void *(*alloc)(void *ptr, long size); 468static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
252 469
253void 470void
254ev_set_allocator (void *(*cb)(void *ptr, long size)) 471ev_set_allocator (void *(*cb)(void *ptr, long size))
255{ 472{
256 alloc = cb; 473 alloc = cb;
257} 474}
258 475
259static void * 476inline_speed void *
260ev_realloc (void *ptr, long size) 477ev_realloc (void *ptr, long size)
261{ 478{
262 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 479 ptr = alloc (ptr, size);
263 480
264 if (!ptr && size) 481 if (!ptr && size)
265 { 482 {
266 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 483 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
267 abort (); 484 abort ();
… …
273#define ev_malloc(size) ev_realloc (0, (size)) 490#define ev_malloc(size) ev_realloc (0, (size))
274#define ev_free(ptr) ev_realloc ((ptr), 0) 491#define ev_free(ptr) ev_realloc ((ptr), 0)
275 492
276/*****************************************************************************/ 493/*****************************************************************************/
277 494
495/* file descriptor info structure */
278typedef struct 496typedef struct
279{ 497{
280 WL head; 498 WL head;
281 unsigned char events; 499 unsigned char events; /* the events watched for */
500 unsigned char reify; /* flag set when this ANFD needs reification */
501 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
282 unsigned char reify; 502 unsigned char unused;
503#if EV_USE_EPOLL
504 unsigned int egen; /* generation counter to counter epoll bugs */
505#endif
283#if EV_SELECT_IS_WINSOCKET 506#if EV_SELECT_IS_WINSOCKET
284 SOCKET handle; 507 SOCKET handle;
285#endif 508#endif
286} ANFD; 509} ANFD;
287 510
511/* stores the pending event set for a given watcher */
288typedef struct 512typedef struct
289{ 513{
290 W w; 514 W w;
291 int events; 515 int events; /* the pending event set for the given watcher */
292} ANPENDING; 516} ANPENDING;
517
518#if EV_USE_INOTIFY
519/* hash table entry per inotify-id */
520typedef struct
521{
522 WL head;
523} ANFS;
524#endif
525
526/* Heap Entry */
527#if EV_HEAP_CACHE_AT
528 /* a heap element */
529 typedef struct {
530 ev_tstamp at;
531 WT w;
532 } ANHE;
533
534 #define ANHE_w(he) (he).w /* access watcher, read-write */
535 #define ANHE_at(he) (he).at /* access cached at, read-only */
536 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
537#else
538 /* a heap element */
539 typedef WT ANHE;
540
541 #define ANHE_w(he) (he)
542 #define ANHE_at(he) (he)->at
543 #define ANHE_at_cache(he)
544#endif
293 545
294#if EV_MULTIPLICITY 546#if EV_MULTIPLICITY
295 547
296 struct ev_loop 548 struct ev_loop
297 { 549 {
… …
317 569
318#endif 570#endif
319 571
320/*****************************************************************************/ 572/*****************************************************************************/
321 573
574#ifndef EV_HAVE_EV_TIME
322ev_tstamp 575ev_tstamp
323ev_time (void) 576ev_time (void)
324{ 577{
325#if EV_USE_REALTIME 578#if EV_USE_REALTIME
579 if (expect_true (have_realtime))
580 {
326 struct timespec ts; 581 struct timespec ts;
327 clock_gettime (CLOCK_REALTIME, &ts); 582 clock_gettime (CLOCK_REALTIME, &ts);
328 return ts.tv_sec + ts.tv_nsec * 1e-9; 583 return ts.tv_sec + ts.tv_nsec * 1e-9;
329#else 584 }
585#endif
586
330 struct timeval tv; 587 struct timeval tv;
331 gettimeofday (&tv, 0); 588 gettimeofday (&tv, 0);
332 return tv.tv_sec + tv.tv_usec * 1e-6; 589 return tv.tv_sec + tv.tv_usec * 1e-6;
333#endif
334} 590}
591#endif
335 592
336ev_tstamp inline_size 593inline_size ev_tstamp
337get_clock (void) 594get_clock (void)
338{ 595{
339#if EV_USE_MONOTONIC 596#if EV_USE_MONOTONIC
340 if (expect_true (have_monotonic)) 597 if (expect_true (have_monotonic))
341 { 598 {
… …
354{ 611{
355 return ev_rt_now; 612 return ev_rt_now;
356} 613}
357#endif 614#endif
358 615
359#define array_roundsize(type,n) (((n) | 4) & ~3) 616void
617ev_sleep (ev_tstamp delay)
618{
619 if (delay > 0.)
620 {
621#if EV_USE_NANOSLEEP
622 struct timespec ts;
623
624 ts.tv_sec = (time_t)delay;
625 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
626
627 nanosleep (&ts, 0);
628#elif defined(_WIN32)
629 Sleep ((unsigned long)(delay * 1e3));
630#else
631 struct timeval tv;
632
633 tv.tv_sec = (time_t)delay;
634 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
635
636 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
637 /* somehting not guaranteed by newer posix versions, but guaranteed */
638 /* by older ones */
639 select (0, 0, 0, 0, &tv);
640#endif
641 }
642}
643
644/*****************************************************************************/
645
646#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
647
648/* find a suitable new size for the given array, */
649/* hopefully by rounding to a ncie-to-malloc size */
650inline_size int
651array_nextsize (int elem, int cur, int cnt)
652{
653 int ncur = cur + 1;
654
655 do
656 ncur <<= 1;
657 while (cnt > ncur);
658
659 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
660 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
661 {
662 ncur *= elem;
663 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
664 ncur = ncur - sizeof (void *) * 4;
665 ncur /= elem;
666 }
667
668 return ncur;
669}
670
671static noinline void *
672array_realloc (int elem, void *base, int *cur, int cnt)
673{
674 *cur = array_nextsize (elem, *cur, cnt);
675 return ev_realloc (base, elem * *cur);
676}
677
678#define array_init_zero(base,count) \
679 memset ((void *)(base), 0, sizeof (*(base)) * (count))
360 680
361#define array_needsize(type,base,cur,cnt,init) \ 681#define array_needsize(type,base,cur,cnt,init) \
362 if (expect_false ((cnt) > cur)) \ 682 if (expect_false ((cnt) > (cur))) \
363 { \ 683 { \
364 int newcnt = cur; \ 684 int ocur_ = (cur); \
365 do \ 685 (base) = (type *)array_realloc \
366 { \ 686 (sizeof (type), (base), &(cur), (cnt)); \
367 newcnt = array_roundsize (type, newcnt << 1); \ 687 init ((base) + (ocur_), (cur) - ocur_); \
368 } \
369 while ((cnt) > newcnt); \
370 \
371 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
372 init (base + cur, newcnt - cur); \
373 cur = newcnt; \
374 } 688 }
375 689
690#if 0
376#define array_slim(type,stem) \ 691#define array_slim(type,stem) \
377 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 692 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
378 { \ 693 { \
379 stem ## max = array_roundsize (stem ## cnt >> 1); \ 694 stem ## max = array_roundsize (stem ## cnt >> 1); \
380 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 695 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
381 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 696 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
382 } 697 }
698#endif
383 699
384#define array_free(stem, idx) \ 700#define array_free(stem, idx) \
385 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 701 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
386 702
387/*****************************************************************************/ 703/*****************************************************************************/
704
705/* dummy callback for pending events */
706static void noinline
707pendingcb (EV_P_ ev_prepare *w, int revents)
708{
709}
388 710
389void noinline 711void noinline
390ev_feed_event (EV_P_ void *w, int revents) 712ev_feed_event (EV_P_ void *w, int revents)
391{ 713{
392 W w_ = (W)w; 714 W w_ = (W)w;
715 int pri = ABSPRI (w_);
393 716
394 if (expect_false (w_->pending)) 717 if (expect_false (w_->pending))
718 pendings [pri][w_->pending - 1].events |= revents;
719 else
395 { 720 {
721 w_->pending = ++pendingcnt [pri];
722 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
723 pendings [pri][w_->pending - 1].w = w_;
396 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; 724 pendings [pri][w_->pending - 1].events = revents;
397 return;
398 } 725 }
399
400 w_->pending = ++pendingcnt [ABSPRI (w_)];
401 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
402 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
403 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
404} 726}
405 727
406void inline_size 728inline_speed void
729feed_reverse (EV_P_ W w)
730{
731 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
732 rfeeds [rfeedcnt++] = w;
733}
734
735inline_size void
736feed_reverse_done (EV_P_ int revents)
737{
738 do
739 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
740 while (rfeedcnt);
741}
742
743inline_speed void
407queue_events (EV_P_ W *events, int eventcnt, int type) 744queue_events (EV_P_ W *events, int eventcnt, int type)
408{ 745{
409 int i; 746 int i;
410 747
411 for (i = 0; i < eventcnt; ++i) 748 for (i = 0; i < eventcnt; ++i)
412 ev_feed_event (EV_A_ events [i], type); 749 ev_feed_event (EV_A_ events [i], type);
413} 750}
414 751
415/*****************************************************************************/ 752/*****************************************************************************/
416 753
417void inline_size 754inline_speed void
418anfds_init (ANFD *base, int count)
419{
420 while (count--)
421 {
422 base->head = 0;
423 base->events = EV_NONE;
424 base->reify = 0;
425
426 ++base;
427 }
428}
429
430void inline_speed
431fd_event (EV_P_ int fd, int revents) 755fd_event (EV_P_ int fd, int revents)
432{ 756{
433 ANFD *anfd = anfds + fd; 757 ANFD *anfd = anfds + fd;
434 ev_io *w; 758 ev_io *w;
435 759
… …
443} 767}
444 768
445void 769void
446ev_feed_fd_event (EV_P_ int fd, int revents) 770ev_feed_fd_event (EV_P_ int fd, int revents)
447{ 771{
772 if (fd >= 0 && fd < anfdmax)
448 fd_event (EV_A_ fd, revents); 773 fd_event (EV_A_ fd, revents);
449} 774}
450 775
451void inline_size 776/* make sure the external fd watch events are in-sync */
777/* with the kernel/libev internal state */
778inline_size void
452fd_reify (EV_P) 779fd_reify (EV_P)
453{ 780{
454 int i; 781 int i;
455 782
456 for (i = 0; i < fdchangecnt; ++i) 783 for (i = 0; i < fdchangecnt; ++i)
457 { 784 {
458 int fd = fdchanges [i]; 785 int fd = fdchanges [i];
459 ANFD *anfd = anfds + fd; 786 ANFD *anfd = anfds + fd;
460 ev_io *w; 787 ev_io *w;
461 788
462 int events = 0; 789 unsigned char events = 0;
463 790
464 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 791 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
465 events |= w->events; 792 events |= (unsigned char)w->events;
466 793
467#if EV_SELECT_IS_WINSOCKET 794#if EV_SELECT_IS_WINSOCKET
468 if (events) 795 if (events)
469 { 796 {
470 unsigned long argp; 797 unsigned long arg;
798 #ifdef EV_FD_TO_WIN32_HANDLE
799 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
800 #else
471 anfd->handle = _get_osfhandle (fd); 801 anfd->handle = _get_osfhandle (fd);
802 #endif
472 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 803 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
473 } 804 }
474#endif 805#endif
475 806
807 {
808 unsigned char o_events = anfd->events;
809 unsigned char o_reify = anfd->reify;
810
476 anfd->reify = 0; 811 anfd->reify = 0;
477
478 backend_modify (EV_A_ fd, anfd->events, events);
479 anfd->events = events; 812 anfd->events = events;
813
814 if (o_events != events || o_reify & EV__IOFDSET)
815 backend_modify (EV_A_ fd, o_events, events);
816 }
480 } 817 }
481 818
482 fdchangecnt = 0; 819 fdchangecnt = 0;
483} 820}
484 821
485void inline_size 822/* something about the given fd changed */
823inline_size void
486fd_change (EV_P_ int fd) 824fd_change (EV_P_ int fd, int flags)
487{ 825{
488 if (expect_false (anfds [fd].reify)) 826 unsigned char reify = anfds [fd].reify;
489 return;
490
491 anfds [fd].reify = 1; 827 anfds [fd].reify |= flags;
492 828
829 if (expect_true (!reify))
830 {
493 ++fdchangecnt; 831 ++fdchangecnt;
494 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 832 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
495 fdchanges [fdchangecnt - 1] = fd; 833 fdchanges [fdchangecnt - 1] = fd;
834 }
496} 835}
497 836
498void inline_speed 837/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
838inline_speed void
499fd_kill (EV_P_ int fd) 839fd_kill (EV_P_ int fd)
500{ 840{
501 ev_io *w; 841 ev_io *w;
502 842
503 while ((w = (ev_io *)anfds [fd].head)) 843 while ((w = (ev_io *)anfds [fd].head))
… …
505 ev_io_stop (EV_A_ w); 845 ev_io_stop (EV_A_ w);
506 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 846 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
507 } 847 }
508} 848}
509 849
510int inline_size 850/* check whether the given fd is atcually valid, for error recovery */
851inline_size int
511fd_valid (int fd) 852fd_valid (int fd)
512{ 853{
513#ifdef _WIN32 854#ifdef _WIN32
514 return _get_osfhandle (fd) != -1; 855 return _get_osfhandle (fd) != -1;
515#else 856#else
… …
523{ 864{
524 int fd; 865 int fd;
525 866
526 for (fd = 0; fd < anfdmax; ++fd) 867 for (fd = 0; fd < anfdmax; ++fd)
527 if (anfds [fd].events) 868 if (anfds [fd].events)
528 if (!fd_valid (fd) == -1 && errno == EBADF) 869 if (!fd_valid (fd) && errno == EBADF)
529 fd_kill (EV_A_ fd); 870 fd_kill (EV_A_ fd);
530} 871}
531 872
532/* called on ENOMEM in select/poll to kill some fds and retry */ 873/* called on ENOMEM in select/poll to kill some fds and retry */
533static void noinline 874static void noinline
… …
547static void noinline 888static void noinline
548fd_rearm_all (EV_P) 889fd_rearm_all (EV_P)
549{ 890{
550 int fd; 891 int fd;
551 892
552 /* this should be highly optimised to not do anything but set a flag */
553 for (fd = 0; fd < anfdmax; ++fd) 893 for (fd = 0; fd < anfdmax; ++fd)
554 if (anfds [fd].events) 894 if (anfds [fd].events)
555 { 895 {
556 anfds [fd].events = 0; 896 anfds [fd].events = 0;
897 anfds [fd].emask = 0;
557 fd_change (EV_A_ fd); 898 fd_change (EV_A_ fd, EV__IOFDSET | 1);
558 } 899 }
559} 900}
560 901
561/*****************************************************************************/ 902/*****************************************************************************/
562 903
563void inline_speed 904/*
564upheap (WT *heap, int k) 905 * the heap functions want a real array index. array index 0 uis guaranteed to not
565{ 906 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
566 WT w = heap [k]; 907 * the branching factor of the d-tree.
908 */
567 909
568 while (k && heap [k >> 1]->at > w->at) 910/*
569 { 911 * at the moment we allow libev the luxury of two heaps,
570 heap [k] = heap [k >> 1]; 912 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
571 ((W)heap [k])->active = k + 1; 913 * which is more cache-efficient.
572 k >>= 1; 914 * the difference is about 5% with 50000+ watchers.
573 } 915 */
916#if EV_USE_4HEAP
574 917
575 heap [k] = w; 918#define DHEAP 4
576 ((W)heap [k])->active = k + 1; 919#define HEAP0 (DHEAP - 1) /* index of first element in heap */
920#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
921#define UPHEAP_DONE(p,k) ((p) == (k))
577 922
578} 923/* away from the root */
579 924inline_speed void
580void inline_speed
581downheap (WT *heap, int N, int k) 925downheap (ANHE *heap, int N, int k)
582{ 926{
583 WT w = heap [k]; 927 ANHE he = heap [k];
928 ANHE *E = heap + N + HEAP0;
584 929
585 while (k < (N >> 1)) 930 for (;;)
586 { 931 {
587 int j = k << 1; 932 ev_tstamp minat;
933 ANHE *minpos;
934 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
588 935
589 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 936 /* find minimum child */
937 if (expect_true (pos + DHEAP - 1 < E))
590 ++j; 938 {
591 939 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
592 if (w->at <= heap [j]->at) 940 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
941 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
942 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
943 }
944 else if (pos < E)
945 {
946 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
947 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
948 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
949 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
950 }
951 else
593 break; 952 break;
594 953
954 if (ANHE_at (he) <= minat)
955 break;
956
957 heap [k] = *minpos;
958 ev_active (ANHE_w (*minpos)) = k;
959
960 k = minpos - heap;
961 }
962
963 heap [k] = he;
964 ev_active (ANHE_w (he)) = k;
965}
966
967#else /* 4HEAP */
968
969#define HEAP0 1
970#define HPARENT(k) ((k) >> 1)
971#define UPHEAP_DONE(p,k) (!(p))
972
973/* away from the root */
974inline_speed void
975downheap (ANHE *heap, int N, int k)
976{
977 ANHE he = heap [k];
978
979 for (;;)
980 {
981 int c = k << 1;
982
983 if (c > N + HEAP0 - 1)
984 break;
985
986 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
987 ? 1 : 0;
988
989 if (ANHE_at (he) <= ANHE_at (heap [c]))
990 break;
991
595 heap [k] = heap [j]; 992 heap [k] = heap [c];
596 ((W)heap [k])->active = k + 1; 993 ev_active (ANHE_w (heap [k])) = k;
994
597 k = j; 995 k = c;
598 } 996 }
599 997
600 heap [k] = w; 998 heap [k] = he;
601 ((W)heap [k])->active = k + 1; 999 ev_active (ANHE_w (he)) = k;
602} 1000}
1001#endif
603 1002
604void inline_size 1003/* towards the root */
1004inline_speed void
1005upheap (ANHE *heap, int k)
1006{
1007 ANHE he = heap [k];
1008
1009 for (;;)
1010 {
1011 int p = HPARENT (k);
1012
1013 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1014 break;
1015
1016 heap [k] = heap [p];
1017 ev_active (ANHE_w (heap [k])) = k;
1018 k = p;
1019 }
1020
1021 heap [k] = he;
1022 ev_active (ANHE_w (he)) = k;
1023}
1024
1025/* move an element suitably so it is in a correct place */
1026inline_size void
605adjustheap (WT *heap, int N, int k) 1027adjustheap (ANHE *heap, int N, int k)
606{ 1028{
1029 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
607 upheap (heap, k); 1030 upheap (heap, k);
1031 else
608 downheap (heap, N, k); 1032 downheap (heap, N, k);
1033}
1034
1035/* rebuild the heap: this function is used only once and executed rarely */
1036inline_size void
1037reheap (ANHE *heap, int N)
1038{
1039 int i;
1040
1041 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1042 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1043 for (i = 0; i < N; ++i)
1044 upheap (heap, i + HEAP0);
609} 1045}
610 1046
611/*****************************************************************************/ 1047/*****************************************************************************/
612 1048
1049/* associate signal watchers to a signal signal */
613typedef struct 1050typedef struct
614{ 1051{
615 WL head; 1052 WL head;
616 sig_atomic_t volatile gotsig; 1053 EV_ATOMIC_T gotsig;
617} ANSIG; 1054} ANSIG;
618 1055
619static ANSIG *signals; 1056static ANSIG *signals;
620static int signalmax; 1057static int signalmax;
621 1058
622static int sigpipe [2]; 1059static EV_ATOMIC_T gotsig;
623static sig_atomic_t volatile gotsig;
624static ev_io sigev;
625 1060
626void inline_size 1061/*****************************************************************************/
627signals_init (ANSIG *base, int count)
628{
629 while (count--)
630 {
631 base->head = 0;
632 base->gotsig = 0;
633 1062
634 ++base; 1063/* used to prepare libev internal fd's */
635 } 1064/* this is not fork-safe */
636} 1065inline_speed void
637
638static void
639sighandler (int signum)
640{
641#if _WIN32
642 signal (signum, sighandler);
643#endif
644
645 signals [signum - 1].gotsig = 1;
646
647 if (!gotsig)
648 {
649 int old_errno = errno;
650 gotsig = 1;
651 write (sigpipe [1], &signum, 1);
652 errno = old_errno;
653 }
654}
655
656void noinline
657ev_feed_signal_event (EV_P_ int signum)
658{
659 WL w;
660
661#if EV_MULTIPLICITY
662 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
663#endif
664
665 --signum;
666
667 if (signum < 0 || signum >= signalmax)
668 return;
669
670 signals [signum].gotsig = 0;
671
672 for (w = signals [signum].head; w; w = w->next)
673 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
674}
675
676static void
677sigcb (EV_P_ ev_io *iow, int revents)
678{
679 int signum;
680
681 read (sigpipe [0], &revents, 1);
682 gotsig = 0;
683
684 for (signum = signalmax; signum--; )
685 if (signals [signum].gotsig)
686 ev_feed_signal_event (EV_A_ signum + 1);
687}
688
689void inline_size
690fd_intern (int fd) 1066fd_intern (int fd)
691{ 1067{
692#ifdef _WIN32 1068#ifdef _WIN32
693 int arg = 1; 1069 unsigned long arg = 1;
694 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1070 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
695#else 1071#else
696 fcntl (fd, F_SETFD, FD_CLOEXEC); 1072 fcntl (fd, F_SETFD, FD_CLOEXEC);
697 fcntl (fd, F_SETFL, O_NONBLOCK); 1073 fcntl (fd, F_SETFL, O_NONBLOCK);
698#endif 1074#endif
699} 1075}
700 1076
701static void noinline 1077static void noinline
702siginit (EV_P) 1078evpipe_init (EV_P)
703{ 1079{
1080 if (!ev_is_active (&pipe_w))
1081 {
1082#if EV_USE_EVENTFD
1083 if ((evfd = eventfd (0, 0)) >= 0)
1084 {
1085 evpipe [0] = -1;
1086 fd_intern (evfd);
1087 ev_io_set (&pipe_w, evfd, EV_READ);
1088 }
1089 else
1090#endif
1091 {
1092 while (pipe (evpipe))
1093 ev_syserr ("(libev) error creating signal/async pipe");
1094
704 fd_intern (sigpipe [0]); 1095 fd_intern (evpipe [0]);
705 fd_intern (sigpipe [1]); 1096 fd_intern (evpipe [1]);
1097 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1098 }
706 1099
707 ev_io_set (&sigev, sigpipe [0], EV_READ);
708 ev_io_start (EV_A_ &sigev); 1100 ev_io_start (EV_A_ &pipe_w);
709 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1101 ev_unref (EV_A); /* watcher should not keep loop alive */
1102 }
1103}
1104
1105inline_size void
1106evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1107{
1108 if (!*flag)
1109 {
1110 int old_errno = errno; /* save errno because write might clobber it */
1111
1112 *flag = 1;
1113
1114#if EV_USE_EVENTFD
1115 if (evfd >= 0)
1116 {
1117 uint64_t counter = 1;
1118 write (evfd, &counter, sizeof (uint64_t));
1119 }
1120 else
1121#endif
1122 write (evpipe [1], &old_errno, 1);
1123
1124 errno = old_errno;
1125 }
1126}
1127
1128/* called whenever the libev signal pipe */
1129/* got some events (signal, async) */
1130static void
1131pipecb (EV_P_ ev_io *iow, int revents)
1132{
1133#if EV_USE_EVENTFD
1134 if (evfd >= 0)
1135 {
1136 uint64_t counter;
1137 read (evfd, &counter, sizeof (uint64_t));
1138 }
1139 else
1140#endif
1141 {
1142 char dummy;
1143 read (evpipe [0], &dummy, 1);
1144 }
1145
1146 if (gotsig && ev_is_default_loop (EV_A))
1147 {
1148 int signum;
1149 gotsig = 0;
1150
1151 for (signum = signalmax; signum--; )
1152 if (signals [signum].gotsig)
1153 ev_feed_signal_event (EV_A_ signum + 1);
1154 }
1155
1156#if EV_ASYNC_ENABLE
1157 if (gotasync)
1158 {
1159 int i;
1160 gotasync = 0;
1161
1162 for (i = asynccnt; i--; )
1163 if (asyncs [i]->sent)
1164 {
1165 asyncs [i]->sent = 0;
1166 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1167 }
1168 }
1169#endif
710} 1170}
711 1171
712/*****************************************************************************/ 1172/*****************************************************************************/
713 1173
1174static void
1175ev_sighandler (int signum)
1176{
1177#if EV_MULTIPLICITY
1178 struct ev_loop *loop = &default_loop_struct;
1179#endif
1180
1181#if _WIN32
1182 signal (signum, ev_sighandler);
1183#endif
1184
1185 signals [signum - 1].gotsig = 1;
1186 evpipe_write (EV_A_ &gotsig);
1187}
1188
1189void noinline
1190ev_feed_signal_event (EV_P_ int signum)
1191{
1192 WL w;
1193
1194#if EV_MULTIPLICITY
1195 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1196#endif
1197
1198 --signum;
1199
1200 if (signum < 0 || signum >= signalmax)
1201 return;
1202
1203 signals [signum].gotsig = 0;
1204
1205 for (w = signals [signum].head; w; w = w->next)
1206 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1207}
1208
1209/*****************************************************************************/
1210
714static ev_child *childs [PID_HASHSIZE]; 1211static WL childs [EV_PID_HASHSIZE];
715 1212
716#ifndef _WIN32 1213#ifndef _WIN32
717 1214
718static ev_signal childev; 1215static ev_signal childev;
1216
1217#ifndef WIFCONTINUED
1218# define WIFCONTINUED(status) 0
1219#endif
1220
1221/* handle a single child status event */
1222inline_speed void
1223child_reap (EV_P_ int chain, int pid, int status)
1224{
1225 ev_child *w;
1226 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1227
1228 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1229 {
1230 if ((w->pid == pid || !w->pid)
1231 && (!traced || (w->flags & 1)))
1232 {
1233 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
1234 w->rpid = pid;
1235 w->rstatus = status;
1236 ev_feed_event (EV_A_ (W)w, EV_CHILD);
1237 }
1238 }
1239}
719 1240
720#ifndef WCONTINUED 1241#ifndef WCONTINUED
721# define WCONTINUED 0 1242# define WCONTINUED 0
722#endif 1243#endif
723 1244
724void inline_speed 1245/* called on sigchld etc., calls waitpid */
725child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
726{
727 ev_child *w;
728
729 for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
730 if (w->pid == pid || !w->pid)
731 {
732 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
733 w->rpid = pid;
734 w->rstatus = status;
735 ev_feed_event (EV_A_ (W)w, EV_CHILD);
736 }
737}
738
739static void 1246static void
740childcb (EV_P_ ev_signal *sw, int revents) 1247childcb (EV_P_ ev_signal *sw, int revents)
741{ 1248{
742 int pid, status; 1249 int pid, status;
743 1250
1251 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
744 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 1252 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
745 { 1253 if (!WCONTINUED
1254 || errno != EINVAL
1255 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
1256 return;
1257
746 /* make sure we are called again until all childs have been reaped */ 1258 /* make sure we are called again until all children have been reaped */
747 /* we need to do it this way so that the callback gets called before we continue */ 1259 /* we need to do it this way so that the callback gets called before we continue */
748 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1260 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
749 1261
750 child_reap (EV_A_ sw, pid, pid, status); 1262 child_reap (EV_A_ pid, pid, status);
1263 if (EV_PID_HASHSIZE > 1)
751 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1264 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
752 }
753} 1265}
754 1266
755#endif 1267#endif
756 1268
757/*****************************************************************************/ 1269/*****************************************************************************/
… …
819 /* kqueue is borked on everything but netbsd apparently */ 1331 /* kqueue is borked on everything but netbsd apparently */
820 /* it usually doesn't work correctly on anything but sockets and pipes */ 1332 /* it usually doesn't work correctly on anything but sockets and pipes */
821 flags &= ~EVBACKEND_KQUEUE; 1333 flags &= ~EVBACKEND_KQUEUE;
822#endif 1334#endif
823#ifdef __APPLE__ 1335#ifdef __APPLE__
824 // flags &= ~EVBACKEND_KQUEUE; for documentation 1336 /* only select works correctly on that "unix-certified" platform */
825 flags &= ~EVBACKEND_POLL; 1337 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1338 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
826#endif 1339#endif
827 1340
828 return flags; 1341 return flags;
829} 1342}
830 1343
831unsigned int 1344unsigned int
832ev_embeddable_backends (void) 1345ev_embeddable_backends (void)
833{ 1346{
834 return EVBACKEND_EPOLL 1347 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
835 | EVBACKEND_KQUEUE 1348
836 | EVBACKEND_PORT; 1349 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1350 /* please fix it and tell me how to detect the fix */
1351 flags &= ~EVBACKEND_EPOLL;
1352
1353 return flags;
837} 1354}
838 1355
839unsigned int 1356unsigned int
840ev_backend (EV_P) 1357ev_backend (EV_P)
841{ 1358{
842 return backend; 1359 return backend;
843} 1360}
844 1361
845static void 1362unsigned int
1363ev_loop_count (EV_P)
1364{
1365 return loop_count;
1366}
1367
1368unsigned int
1369ev_loop_depth (EV_P)
1370{
1371 return loop_depth;
1372}
1373
1374void
1375ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1376{
1377 io_blocktime = interval;
1378}
1379
1380void
1381ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1382{
1383 timeout_blocktime = interval;
1384}
1385
1386/* initialise a loop structure, must be zero-initialised */
1387static void noinline
846loop_init (EV_P_ unsigned int flags) 1388loop_init (EV_P_ unsigned int flags)
847{ 1389{
848 if (!backend) 1390 if (!backend)
849 { 1391 {
1392#if EV_USE_REALTIME
1393 if (!have_realtime)
1394 {
1395 struct timespec ts;
1396
1397 if (!clock_gettime (CLOCK_REALTIME, &ts))
1398 have_realtime = 1;
1399 }
1400#endif
1401
850#if EV_USE_MONOTONIC 1402#if EV_USE_MONOTONIC
1403 if (!have_monotonic)
851 { 1404 {
852 struct timespec ts; 1405 struct timespec ts;
1406
853 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1407 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
854 have_monotonic = 1; 1408 have_monotonic = 1;
855 } 1409 }
856#endif 1410#endif
857 1411
858 ev_rt_now = ev_time (); 1412 ev_rt_now = ev_time ();
859 mn_now = get_clock (); 1413 mn_now = get_clock ();
860 now_floor = mn_now; 1414 now_floor = mn_now;
861 rtmn_diff = ev_rt_now - mn_now; 1415 rtmn_diff = ev_rt_now - mn_now;
1416 invoke_cb = ev_invoke_pending;
1417
1418 io_blocktime = 0.;
1419 timeout_blocktime = 0.;
1420 backend = 0;
1421 backend_fd = -1;
1422 gotasync = 0;
1423#if EV_USE_INOTIFY
1424 fs_fd = -2;
1425#endif
1426
1427 /* pid check not overridable via env */
1428#ifndef _WIN32
1429 if (flags & EVFLAG_FORKCHECK)
1430 curpid = getpid ();
1431#endif
862 1432
863 if (!(flags & EVFLAG_NOENV) 1433 if (!(flags & EVFLAG_NOENV)
864 && !enable_secure () 1434 && !enable_secure ()
865 && getenv ("LIBEV_FLAGS")) 1435 && getenv ("LIBEV_FLAGS"))
866 flags = atoi (getenv ("LIBEV_FLAGS")); 1436 flags = atoi (getenv ("LIBEV_FLAGS"));
867 1437
868 if (!(flags & 0x0000ffffUL)) 1438 if (!(flags & 0x0000ffffU))
869 flags |= ev_recommended_backends (); 1439 flags |= ev_recommended_backends ();
870 1440
871 backend = 0;
872#if EV_USE_PORT 1441#if EV_USE_PORT
873 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1442 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
874#endif 1443#endif
875#if EV_USE_KQUEUE 1444#if EV_USE_KQUEUE
876 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1445 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
883#endif 1452#endif
884#if EV_USE_SELECT 1453#if EV_USE_SELECT
885 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1454 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
886#endif 1455#endif
887 1456
1457 ev_prepare_init (&pending_w, pendingcb);
1458
888 ev_init (&sigev, sigcb); 1459 ev_init (&pipe_w, pipecb);
889 ev_set_priority (&sigev, EV_MAXPRI); 1460 ev_set_priority (&pipe_w, EV_MAXPRI);
890 } 1461 }
891} 1462}
892 1463
893static void 1464/* free up a loop structure */
1465static void noinline
894loop_destroy (EV_P) 1466loop_destroy (EV_P)
895{ 1467{
896 int i; 1468 int i;
1469
1470 if (ev_is_active (&pipe_w))
1471 {
1472 ev_ref (EV_A); /* signal watcher */
1473 ev_io_stop (EV_A_ &pipe_w);
1474
1475#if EV_USE_EVENTFD
1476 if (evfd >= 0)
1477 close (evfd);
1478#endif
1479
1480 if (evpipe [0] >= 0)
1481 {
1482 close (evpipe [0]);
1483 close (evpipe [1]);
1484 }
1485 }
1486
1487#if EV_USE_INOTIFY
1488 if (fs_fd >= 0)
1489 close (fs_fd);
1490#endif
1491
1492 if (backend_fd >= 0)
1493 close (backend_fd);
897 1494
898#if EV_USE_PORT 1495#if EV_USE_PORT
899 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1496 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
900#endif 1497#endif
901#if EV_USE_KQUEUE 1498#if EV_USE_KQUEUE
… …
910#if EV_USE_SELECT 1507#if EV_USE_SELECT
911 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 1508 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
912#endif 1509#endif
913 1510
914 for (i = NUMPRI; i--; ) 1511 for (i = NUMPRI; i--; )
1512 {
915 array_free (pending, [i]); 1513 array_free (pending, [i]);
1514#if EV_IDLE_ENABLE
1515 array_free (idle, [i]);
1516#endif
1517 }
1518
1519 ev_free (anfds); anfdmax = 0;
916 1520
917 /* have to use the microsoft-never-gets-it-right macro */ 1521 /* have to use the microsoft-never-gets-it-right macro */
1522 array_free (rfeed, EMPTY);
918 array_free (fdchange, EMPTY0); 1523 array_free (fdchange, EMPTY);
919 array_free (timer, EMPTY0); 1524 array_free (timer, EMPTY);
920#if EV_PERIODIC_ENABLE 1525#if EV_PERIODIC_ENABLE
921 array_free (periodic, EMPTY0); 1526 array_free (periodic, EMPTY);
922#endif 1527#endif
1528#if EV_FORK_ENABLE
923 array_free (idle, EMPTY0); 1529 array_free (fork, EMPTY);
1530#endif
924 array_free (prepare, EMPTY0); 1531 array_free (prepare, EMPTY);
925 array_free (check, EMPTY0); 1532 array_free (check, EMPTY);
1533#if EV_ASYNC_ENABLE
1534 array_free (async, EMPTY);
1535#endif
926 1536
927 backend = 0; 1537 backend = 0;
928} 1538}
929 1539
930static void 1540#if EV_USE_INOTIFY
1541inline_size void infy_fork (EV_P);
1542#endif
1543
1544inline_size void
931loop_fork (EV_P) 1545loop_fork (EV_P)
932{ 1546{
933#if EV_USE_PORT 1547#if EV_USE_PORT
934 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1548 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
935#endif 1549#endif
… …
937 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 1551 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
938#endif 1552#endif
939#if EV_USE_EPOLL 1553#if EV_USE_EPOLL
940 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 1554 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
941#endif 1555#endif
1556#if EV_USE_INOTIFY
1557 infy_fork (EV_A);
1558#endif
942 1559
943 if (ev_is_active (&sigev)) 1560 if (ev_is_active (&pipe_w))
944 { 1561 {
945 /* default loop */ 1562 /* this "locks" the handlers against writing to the pipe */
1563 /* while we modify the fd vars */
1564 gotsig = 1;
1565#if EV_ASYNC_ENABLE
1566 gotasync = 1;
1567#endif
946 1568
947 ev_ref (EV_A); 1569 ev_ref (EV_A);
948 ev_io_stop (EV_A_ &sigev); 1570 ev_io_stop (EV_A_ &pipe_w);
1571
1572#if EV_USE_EVENTFD
1573 if (evfd >= 0)
1574 close (evfd);
1575#endif
1576
1577 if (evpipe [0] >= 0)
1578 {
949 close (sigpipe [0]); 1579 close (evpipe [0]);
950 close (sigpipe [1]); 1580 close (evpipe [1]);
1581 }
951 1582
952 while (pipe (sigpipe))
953 syserr ("(libev) error creating pipe");
954
955 siginit (EV_A); 1583 evpipe_init (EV_A);
1584 /* now iterate over everything, in case we missed something */
1585 pipecb (EV_A_ &pipe_w, EV_READ);
956 } 1586 }
957 1587
958 postfork = 0; 1588 postfork = 0;
959} 1589}
960 1590
961#if EV_MULTIPLICITY 1591#if EV_MULTIPLICITY
1592
962struct ev_loop * 1593struct ev_loop *
963ev_loop_new (unsigned int flags) 1594ev_loop_new (unsigned int flags)
964{ 1595{
965 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1596 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
966 1597
… …
982} 1613}
983 1614
984void 1615void
985ev_loop_fork (EV_P) 1616ev_loop_fork (EV_P)
986{ 1617{
987 postfork = 1; 1618 postfork = 1; /* must be in line with ev_default_fork */
988} 1619}
989 1620
1621#if EV_VERIFY
1622static void noinline
1623verify_watcher (EV_P_ W w)
1624{
1625 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1626
1627 if (w->pending)
1628 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1629}
1630
1631static void noinline
1632verify_heap (EV_P_ ANHE *heap, int N)
1633{
1634 int i;
1635
1636 for (i = HEAP0; i < N + HEAP0; ++i)
1637 {
1638 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1639 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1640 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1641
1642 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1643 }
1644}
1645
1646static void noinline
1647array_verify (EV_P_ W *ws, int cnt)
1648{
1649 while (cnt--)
1650 {
1651 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1652 verify_watcher (EV_A_ ws [cnt]);
1653 }
1654}
1655#endif
1656
1657void
1658ev_loop_verify (EV_P)
1659{
1660#if EV_VERIFY
1661 int i;
1662 WL w;
1663
1664 assert (activecnt >= -1);
1665
1666 assert (fdchangemax >= fdchangecnt);
1667 for (i = 0; i < fdchangecnt; ++i)
1668 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1669
1670 assert (anfdmax >= 0);
1671 for (i = 0; i < anfdmax; ++i)
1672 for (w = anfds [i].head; w; w = w->next)
1673 {
1674 verify_watcher (EV_A_ (W)w);
1675 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1676 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1677 }
1678
1679 assert (timermax >= timercnt);
1680 verify_heap (EV_A_ timers, timercnt);
1681
1682#if EV_PERIODIC_ENABLE
1683 assert (periodicmax >= periodiccnt);
1684 verify_heap (EV_A_ periodics, periodiccnt);
1685#endif
1686
1687 for (i = NUMPRI; i--; )
1688 {
1689 assert (pendingmax [i] >= pendingcnt [i]);
1690#if EV_IDLE_ENABLE
1691 assert (idleall >= 0);
1692 assert (idlemax [i] >= idlecnt [i]);
1693 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1694#endif
1695 }
1696
1697#if EV_FORK_ENABLE
1698 assert (forkmax >= forkcnt);
1699 array_verify (EV_A_ (W *)forks, forkcnt);
1700#endif
1701
1702#if EV_ASYNC_ENABLE
1703 assert (asyncmax >= asynccnt);
1704 array_verify (EV_A_ (W *)asyncs, asynccnt);
1705#endif
1706
1707 assert (preparemax >= preparecnt);
1708 array_verify (EV_A_ (W *)prepares, preparecnt);
1709
1710 assert (checkmax >= checkcnt);
1711 array_verify (EV_A_ (W *)checks, checkcnt);
1712
1713# if 0
1714 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1715 for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
990#endif 1716# endif
1717#endif
1718}
1719
1720#endif /* multiplicity */
991 1721
992#if EV_MULTIPLICITY 1722#if EV_MULTIPLICITY
993struct ev_loop * 1723struct ev_loop *
994ev_default_loop_init (unsigned int flags) 1724ev_default_loop_init (unsigned int flags)
995#else 1725#else
996int 1726int
997ev_default_loop (unsigned int flags) 1727ev_default_loop (unsigned int flags)
998#endif 1728#endif
999{ 1729{
1000 if (sigpipe [0] == sigpipe [1])
1001 if (pipe (sigpipe))
1002 return 0;
1003
1004 if (!ev_default_loop_ptr) 1730 if (!ev_default_loop_ptr)
1005 { 1731 {
1006#if EV_MULTIPLICITY 1732#if EV_MULTIPLICITY
1007 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1733 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1008#else 1734#else
… …
1011 1737
1012 loop_init (EV_A_ flags); 1738 loop_init (EV_A_ flags);
1013 1739
1014 if (ev_backend (EV_A)) 1740 if (ev_backend (EV_A))
1015 { 1741 {
1016 siginit (EV_A);
1017
1018#ifndef _WIN32 1742#ifndef _WIN32
1019 ev_signal_init (&childev, childcb, SIGCHLD); 1743 ev_signal_init (&childev, childcb, SIGCHLD);
1020 ev_set_priority (&childev, EV_MAXPRI); 1744 ev_set_priority (&childev, EV_MAXPRI);
1021 ev_signal_start (EV_A_ &childev); 1745 ev_signal_start (EV_A_ &childev);
1022 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1746 ev_unref (EV_A); /* child watcher should not keep loop alive */
… …
1034{ 1758{
1035#if EV_MULTIPLICITY 1759#if EV_MULTIPLICITY
1036 struct ev_loop *loop = ev_default_loop_ptr; 1760 struct ev_loop *loop = ev_default_loop_ptr;
1037#endif 1761#endif
1038 1762
1763 ev_default_loop_ptr = 0;
1764
1039#ifndef _WIN32 1765#ifndef _WIN32
1040 ev_ref (EV_A); /* child watcher */ 1766 ev_ref (EV_A); /* child watcher */
1041 ev_signal_stop (EV_A_ &childev); 1767 ev_signal_stop (EV_A_ &childev);
1042#endif 1768#endif
1043 1769
1044 ev_ref (EV_A); /* signal watcher */
1045 ev_io_stop (EV_A_ &sigev);
1046
1047 close (sigpipe [0]); sigpipe [0] = 0;
1048 close (sigpipe [1]); sigpipe [1] = 0;
1049
1050 loop_destroy (EV_A); 1770 loop_destroy (EV_A);
1051} 1771}
1052 1772
1053void 1773void
1054ev_default_fork (void) 1774ev_default_fork (void)
1055{ 1775{
1056#if EV_MULTIPLICITY 1776#if EV_MULTIPLICITY
1057 struct ev_loop *loop = ev_default_loop_ptr; 1777 struct ev_loop *loop = ev_default_loop_ptr;
1058#endif 1778#endif
1059 1779
1060 if (backend) 1780 postfork = 1; /* must be in line with ev_loop_fork */
1061 postfork = 1;
1062} 1781}
1063 1782
1064/*****************************************************************************/ 1783/*****************************************************************************/
1065 1784
1066int inline_size 1785void
1786ev_invoke (EV_P_ void *w, int revents)
1787{
1788 EV_CB_INVOKE ((W)w, revents);
1789}
1790
1791void
1067any_pending (EV_P) 1792ev_invoke_pending (EV_P)
1068{
1069 int pri;
1070
1071 for (pri = NUMPRI; pri--; )
1072 if (pendingcnt [pri])
1073 return 1;
1074
1075 return 0;
1076}
1077
1078void inline_speed
1079call_pending (EV_P)
1080{ 1793{
1081 int pri; 1794 int pri;
1082 1795
1083 for (pri = NUMPRI; pri--; ) 1796 for (pri = NUMPRI; pri--; )
1084 while (pendingcnt [pri]) 1797 while (pendingcnt [pri])
1085 { 1798 {
1086 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1799 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1087 1800
1088 if (expect_true (p->w))
1089 {
1090 assert (("non-pending watcher on pending list", p->w->pending)); 1801 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1802 /* ^ this is no longer true, as pending_w could be here */
1091 1803
1092 p->w->pending = 0; 1804 p->w->pending = 0;
1093 EV_CB_INVOKE (p->w, p->events); 1805 EV_CB_INVOKE (p->w, p->events);
1094 } 1806 EV_FREQUENT_CHECK;
1095 } 1807 }
1096} 1808}
1097 1809
1098void inline_size 1810#if EV_IDLE_ENABLE
1811/* make idle watchers pending. this handles the "call-idle */
1812/* only when higher priorities are idle" logic */
1813inline_size void
1814idle_reify (EV_P)
1815{
1816 if (expect_false (idleall))
1817 {
1818 int pri;
1819
1820 for (pri = NUMPRI; pri--; )
1821 {
1822 if (pendingcnt [pri])
1823 break;
1824
1825 if (idlecnt [pri])
1826 {
1827 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1828 break;
1829 }
1830 }
1831 }
1832}
1833#endif
1834
1835/* make timers pending */
1836inline_size void
1099timers_reify (EV_P) 1837timers_reify (EV_P)
1100{ 1838{
1839 EV_FREQUENT_CHECK;
1840
1101 while (timercnt && ((WT)timers [0])->at <= mn_now) 1841 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1102 { 1842 {
1103 ev_timer *w = timers [0]; 1843 do
1104
1105 assert (("inactive timer on timer heap detected", ev_is_active (w)));
1106
1107 /* first reschedule or stop timer */
1108 if (w->repeat)
1109 { 1844 {
1845 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
1846
1847 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
1848
1849 /* first reschedule or stop timer */
1850 if (w->repeat)
1851 {
1852 ev_at (w) += w->repeat;
1853 if (ev_at (w) < mn_now)
1854 ev_at (w) = mn_now;
1855
1110 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1856 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1111 1857
1112 ((WT)w)->at += w->repeat; 1858 ANHE_at_cache (timers [HEAP0]);
1113 if (((WT)w)->at < mn_now)
1114 ((WT)w)->at = mn_now;
1115
1116 downheap ((WT *)timers, timercnt, 0); 1859 downheap (timers, timercnt, HEAP0);
1860 }
1861 else
1862 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1863
1864 EV_FREQUENT_CHECK;
1865 feed_reverse (EV_A_ (W)w);
1117 } 1866 }
1118 else 1867 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1119 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1120 1868
1121 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1869 feed_reverse_done (EV_A_ EV_TIMEOUT);
1122 } 1870 }
1123} 1871}
1124 1872
1125#if EV_PERIODIC_ENABLE 1873#if EV_PERIODIC_ENABLE
1126void inline_size 1874/* make periodics pending */
1875inline_size void
1127periodics_reify (EV_P) 1876periodics_reify (EV_P)
1128{ 1877{
1878 EV_FREQUENT_CHECK;
1879
1129 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1880 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1130 { 1881 {
1131 ev_periodic *w = periodics [0]; 1882 int feed_count = 0;
1132 1883
1133 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1884 do
1134
1135 /* first reschedule or stop timer */
1136 if (w->reschedule_cb)
1137 { 1885 {
1886 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1887
1888 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
1889
1890 /* first reschedule or stop timer */
1891 if (w->reschedule_cb)
1892 {
1138 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1893 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1894
1139 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1895 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1896
1897 ANHE_at_cache (periodics [HEAP0]);
1140 downheap ((WT *)periodics, periodiccnt, 0); 1898 downheap (periodics, periodiccnt, HEAP0);
1899 }
1900 else if (w->interval)
1901 {
1902 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1903 /* if next trigger time is not sufficiently in the future, put it there */
1904 /* this might happen because of floating point inexactness */
1905 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1906 {
1907 ev_at (w) += w->interval;
1908
1909 /* if interval is unreasonably low we might still have a time in the past */
1910 /* so correct this. this will make the periodic very inexact, but the user */
1911 /* has effectively asked to get triggered more often than possible */
1912 if (ev_at (w) < ev_rt_now)
1913 ev_at (w) = ev_rt_now;
1914 }
1915
1916 ANHE_at_cache (periodics [HEAP0]);
1917 downheap (periodics, periodiccnt, HEAP0);
1918 }
1919 else
1920 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1921
1922 EV_FREQUENT_CHECK;
1923 feed_reverse (EV_A_ (W)w);
1141 } 1924 }
1142 else if (w->interval) 1925 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1143 {
1144 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
1145 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1146 downheap ((WT *)periodics, periodiccnt, 0);
1147 }
1148 else
1149 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1150 1926
1151 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1927 feed_reverse_done (EV_A_ EV_PERIODIC);
1152 } 1928 }
1153} 1929}
1154 1930
1931/* simply recalculate all periodics */
1932/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1155static void noinline 1933static void noinline
1156periodics_reschedule (EV_P) 1934periodics_reschedule (EV_P)
1157{ 1935{
1158 int i; 1936 int i;
1159 1937
1160 /* adjust periodics after time jump */ 1938 /* adjust periodics after time jump */
1161 for (i = 0; i < periodiccnt; ++i) 1939 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1162 { 1940 {
1163 ev_periodic *w = periodics [i]; 1941 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1164 1942
1165 if (w->reschedule_cb) 1943 if (w->reschedule_cb)
1166 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1944 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1167 else if (w->interval) 1945 else if (w->interval)
1168 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1946 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1947
1948 ANHE_at_cache (periodics [i]);
1949 }
1950
1951 reheap (periodics, periodiccnt);
1952}
1953#endif
1954
1955/* adjust all timers by a given offset */
1956static void noinline
1957timers_reschedule (EV_P_ ev_tstamp adjust)
1958{
1959 int i;
1960
1961 for (i = 0; i < timercnt; ++i)
1169 } 1962 {
1170 1963 ANHE *he = timers + i + HEAP0;
1171 /* now rebuild the heap */ 1964 ANHE_w (*he)->at += adjust;
1172 for (i = periodiccnt >> 1; i--; ) 1965 ANHE_at_cache (*he);
1173 downheap ((WT *)periodics, periodiccnt, i); 1966 }
1174} 1967}
1175#endif
1176 1968
1177int inline_size 1969/* fetch new monotonic and realtime times from the kernel */
1178time_update_monotonic (EV_P) 1970/* also detetc if there was a timejump, and act accordingly */
1971inline_speed void
1972time_update (EV_P_ ev_tstamp max_block)
1179{ 1973{
1974#if EV_USE_MONOTONIC
1975 if (expect_true (have_monotonic))
1976 {
1977 int i;
1978 ev_tstamp odiff = rtmn_diff;
1979
1180 mn_now = get_clock (); 1980 mn_now = get_clock ();
1181 1981
1982 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1983 /* interpolate in the meantime */
1182 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1984 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1183 { 1985 {
1184 ev_rt_now = rtmn_diff + mn_now; 1986 ev_rt_now = rtmn_diff + mn_now;
1185 return 0; 1987 return;
1186 } 1988 }
1187 else 1989
1188 {
1189 now_floor = mn_now; 1990 now_floor = mn_now;
1190 ev_rt_now = ev_time (); 1991 ev_rt_now = ev_time ();
1191 return 1;
1192 }
1193}
1194 1992
1195void inline_size 1993 /* loop a few times, before making important decisions.
1196time_update (EV_P) 1994 * on the choice of "4": one iteration isn't enough,
1197{ 1995 * in case we get preempted during the calls to
1198 int i; 1996 * ev_time and get_clock. a second call is almost guaranteed
1199 1997 * to succeed in that case, though. and looping a few more times
1200#if EV_USE_MONOTONIC 1998 * doesn't hurt either as we only do this on time-jumps or
1201 if (expect_true (have_monotonic)) 1999 * in the unlikely event of having been preempted here.
1202 { 2000 */
1203 if (time_update_monotonic (EV_A)) 2001 for (i = 4; --i; )
1204 { 2002 {
1205 ev_tstamp odiff = rtmn_diff;
1206
1207 /* loop a few times, before making important decisions.
1208 * on the choice of "4": one iteration isn't enough,
1209 * in case we get preempted during the calls to
1210 * ev_time and get_clock. a second call is almost guarenteed
1211 * to succeed in that case, though. and looping a few more times
1212 * doesn't hurt either as we only do this on time-jumps or
1213 * in the unlikely event of getting preempted here.
1214 */
1215 for (i = 4; --i; )
1216 {
1217 rtmn_diff = ev_rt_now - mn_now; 2003 rtmn_diff = ev_rt_now - mn_now;
1218 2004
1219 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 2005 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1220 return; /* all is well */ 2006 return; /* all is well */
1221 2007
1222 ev_rt_now = ev_time (); 2008 ev_rt_now = ev_time ();
1223 mn_now = get_clock (); 2009 mn_now = get_clock ();
1224 now_floor = mn_now; 2010 now_floor = mn_now;
1225 } 2011 }
1226 2012
2013 /* no timer adjustment, as the monotonic clock doesn't jump */
2014 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1227# if EV_PERIODIC_ENABLE 2015# if EV_PERIODIC_ENABLE
1228 periodics_reschedule (EV_A); 2016 periodics_reschedule (EV_A);
1229# endif 2017# endif
1230 /* no timer adjustment, as the monotonic clock doesn't jump */
1231 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1232 }
1233 } 2018 }
1234 else 2019 else
1235#endif 2020#endif
1236 { 2021 {
1237 ev_rt_now = ev_time (); 2022 ev_rt_now = ev_time ();
1238 2023
1239 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 2024 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1240 { 2025 {
2026 /* adjust timers. this is easy, as the offset is the same for all of them */
2027 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1241#if EV_PERIODIC_ENABLE 2028#if EV_PERIODIC_ENABLE
1242 periodics_reschedule (EV_A); 2029 periodics_reschedule (EV_A);
1243#endif 2030#endif
1244
1245 /* adjust timers. this is easy, as the offset is the same for all */
1246 for (i = 0; i < timercnt; ++i)
1247 ((WT)timers [i])->at += ev_rt_now - mn_now;
1248 } 2031 }
1249 2032
1250 mn_now = ev_rt_now; 2033 mn_now = ev_rt_now;
1251 } 2034 }
1252} 2035}
1253 2036
1254void 2037void
1255ev_ref (EV_P)
1256{
1257 ++activecnt;
1258}
1259
1260void
1261ev_unref (EV_P)
1262{
1263 --activecnt;
1264}
1265
1266static int loop_done;
1267
1268void
1269ev_loop (EV_P_ int flags) 2038ev_loop (EV_P_ int flags)
1270{ 2039{
1271 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 2040 ++loop_depth;
1272 ? EVUNLOOP_ONE
1273 : EVUNLOOP_CANCEL;
1274 2041
1275 while (activecnt) 2042 loop_done = EVUNLOOP_CANCEL;
2043
2044 invoke_cb (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
2045
2046 do
1276 { 2047 {
2048#if EV_VERIFY >= 2
2049 ev_loop_verify (EV_A);
2050#endif
2051
2052#ifndef _WIN32
2053 if (expect_false (curpid)) /* penalise the forking check even more */
2054 if (expect_false (getpid () != curpid))
2055 {
2056 curpid = getpid ();
2057 postfork = 1;
2058 }
2059#endif
2060
2061#if EV_FORK_ENABLE
2062 /* we might have forked, so queue fork handlers */
2063 if (expect_false (postfork))
2064 if (forkcnt)
2065 {
2066 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2067 invoke_cb (EV_A);
2068 }
2069#endif
2070
1277 /* queue check watchers (and execute them) */ 2071 /* queue prepare watchers (and execute them) */
1278 if (expect_false (preparecnt)) 2072 if (expect_false (preparecnt))
1279 { 2073 {
1280 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2074 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1281 call_pending (EV_A); 2075 invoke_cb (EV_A);
1282 } 2076 }
1283 2077
1284 /* we might have forked, so reify kernel state if necessary */ 2078 /* we might have forked, so reify kernel state if necessary */
1285 if (expect_false (postfork)) 2079 if (expect_false (postfork))
1286 loop_fork (EV_A); 2080 loop_fork (EV_A);
… …
1288 /* update fd-related kernel structures */ 2082 /* update fd-related kernel structures */
1289 fd_reify (EV_A); 2083 fd_reify (EV_A);
1290 2084
1291 /* calculate blocking time */ 2085 /* calculate blocking time */
1292 { 2086 {
1293 double block; 2087 ev_tstamp waittime = 0.;
2088 ev_tstamp sleeptime = 0.;
1294 2089
1295 if (flags & EVLOOP_NONBLOCK || idlecnt) 2090 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1296 block = 0.; /* do not block at all */
1297 else
1298 { 2091 {
2092 /* remember old timestamp for io_blocktime calculation */
2093 ev_tstamp prev_mn_now = mn_now;
2094
1299 /* update time to cancel out callback processing overhead */ 2095 /* update time to cancel out callback processing overhead */
1300#if EV_USE_MONOTONIC
1301 if (expect_true (have_monotonic))
1302 time_update_monotonic (EV_A); 2096 time_update (EV_A_ 1e100);
1303 else
1304#endif
1305 {
1306 ev_rt_now = ev_time ();
1307 mn_now = ev_rt_now;
1308 }
1309 2097
1310 block = MAX_BLOCKTIME; 2098 waittime = MAX_BLOCKTIME;
1311 2099
1312 if (timercnt) 2100 if (timercnt)
1313 { 2101 {
1314 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 2102 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1315 if (block > to) block = to; 2103 if (waittime > to) waittime = to;
1316 } 2104 }
1317 2105
1318#if EV_PERIODIC_ENABLE 2106#if EV_PERIODIC_ENABLE
1319 if (periodiccnt) 2107 if (periodiccnt)
1320 { 2108 {
1321 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 2109 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1322 if (block > to) block = to; 2110 if (waittime > to) waittime = to;
1323 } 2111 }
1324#endif 2112#endif
1325 2113
2114 /* don't let timeouts decrease the waittime below timeout_blocktime */
2115 if (expect_false (waittime < timeout_blocktime))
2116 waittime = timeout_blocktime;
2117
2118 /* extra check because io_blocktime is commonly 0 */
1326 if (expect_false (block < 0.)) block = 0.; 2119 if (expect_false (io_blocktime))
2120 {
2121 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2122
2123 if (sleeptime > waittime - backend_fudge)
2124 sleeptime = waittime - backend_fudge;
2125
2126 if (expect_true (sleeptime > 0.))
2127 {
2128 ev_sleep (sleeptime);
2129 waittime -= sleeptime;
2130 }
2131 }
1327 } 2132 }
1328 2133
2134 ++loop_count;
1329 backend_poll (EV_A_ block); 2135 backend_poll (EV_A_ waittime);
2136
2137 /* update ev_rt_now, do magic */
2138 time_update (EV_A_ waittime + sleeptime);
1330 } 2139 }
1331
1332 /* update ev_rt_now, do magic */
1333 time_update (EV_A);
1334 2140
1335 /* queue pending timers and reschedule them */ 2141 /* queue pending timers and reschedule them */
1336 timers_reify (EV_A); /* relative timers called last */ 2142 timers_reify (EV_A); /* relative timers called last */
1337#if EV_PERIODIC_ENABLE 2143#if EV_PERIODIC_ENABLE
1338 periodics_reify (EV_A); /* absolute timers called first */ 2144 periodics_reify (EV_A); /* absolute timers called first */
1339#endif 2145#endif
1340 2146
2147#if EV_IDLE_ENABLE
1341 /* queue idle watchers unless other events are pending */ 2148 /* queue idle watchers unless other events are pending */
1342 if (idlecnt && !any_pending (EV_A)) 2149 idle_reify (EV_A);
1343 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 2150#endif
1344 2151
1345 /* queue check watchers, to be executed first */ 2152 /* queue check watchers, to be executed first */
1346 if (expect_false (checkcnt)) 2153 if (expect_false (checkcnt))
1347 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2154 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1348 2155
1349 call_pending (EV_A); 2156 invoke_cb (EV_A);
1350
1351 if (expect_false (loop_done))
1352 break;
1353 } 2157 }
2158 while (expect_true (
2159 activecnt
2160 && !loop_done
2161 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2162 ));
1354 2163
1355 if (loop_done == EVUNLOOP_ONE) 2164 if (loop_done == EVUNLOOP_ONE)
1356 loop_done = EVUNLOOP_CANCEL; 2165 loop_done = EVUNLOOP_CANCEL;
2166
2167 --loop_depth;
1357} 2168}
1358 2169
1359void 2170void
1360ev_unloop (EV_P_ int how) 2171ev_unloop (EV_P_ int how)
1361{ 2172{
1362 loop_done = how; 2173 loop_done = how;
1363} 2174}
1364 2175
2176void
2177ev_ref (EV_P)
2178{
2179 ++activecnt;
2180}
2181
2182void
2183ev_unref (EV_P)
2184{
2185 --activecnt;
2186}
2187
2188void
2189ev_now_update (EV_P)
2190{
2191 time_update (EV_A_ 1e100);
2192}
2193
2194void
2195ev_suspend (EV_P)
2196{
2197 ev_now_update (EV_A);
2198}
2199
2200void
2201ev_resume (EV_P)
2202{
2203 ev_tstamp mn_prev = mn_now;
2204
2205 ev_now_update (EV_A);
2206 timers_reschedule (EV_A_ mn_now - mn_prev);
2207#if EV_PERIODIC_ENABLE
2208 /* TODO: really do this? */
2209 periodics_reschedule (EV_A);
2210#endif
2211}
2212
1365/*****************************************************************************/ 2213/*****************************************************************************/
2214/* singly-linked list management, used when the expected list length is short */
1366 2215
1367void inline_size 2216inline_size void
1368wlist_add (WL *head, WL elem) 2217wlist_add (WL *head, WL elem)
1369{ 2218{
1370 elem->next = *head; 2219 elem->next = *head;
1371 *head = elem; 2220 *head = elem;
1372} 2221}
1373 2222
1374void inline_size 2223inline_size void
1375wlist_del (WL *head, WL elem) 2224wlist_del (WL *head, WL elem)
1376{ 2225{
1377 while (*head) 2226 while (*head)
1378 { 2227 {
1379 if (*head == elem) 2228 if (*head == elem)
… …
1384 2233
1385 head = &(*head)->next; 2234 head = &(*head)->next;
1386 } 2235 }
1387} 2236}
1388 2237
1389void inline_speed 2238/* internal, faster, version of ev_clear_pending */
2239inline_speed void
1390ev_clear_pending (EV_P_ W w) 2240clear_pending (EV_P_ W w)
1391{ 2241{
1392 if (w->pending) 2242 if (w->pending)
1393 { 2243 {
1394 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2244 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1395 w->pending = 0; 2245 w->pending = 0;
1396 } 2246 }
1397} 2247}
1398 2248
1399void inline_speed 2249int
2250ev_clear_pending (EV_P_ void *w)
2251{
2252 W w_ = (W)w;
2253 int pending = w_->pending;
2254
2255 if (expect_true (pending))
2256 {
2257 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2258 p->w = (W)&pending_w;
2259 w_->pending = 0;
2260 return p->events;
2261 }
2262 else
2263 return 0;
2264}
2265
2266inline_size void
2267pri_adjust (EV_P_ W w)
2268{
2269 int pri = ev_priority (w);
2270 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2271 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2272 ev_set_priority (w, pri);
2273}
2274
2275inline_speed void
1400ev_start (EV_P_ W w, int active) 2276ev_start (EV_P_ W w, int active)
1401{ 2277{
1402 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 2278 pri_adjust (EV_A_ w);
1403 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1404
1405 w->active = active; 2279 w->active = active;
1406 ev_ref (EV_A); 2280 ev_ref (EV_A);
1407} 2281}
1408 2282
1409void inline_size 2283inline_size void
1410ev_stop (EV_P_ W w) 2284ev_stop (EV_P_ W w)
1411{ 2285{
1412 ev_unref (EV_A); 2286 ev_unref (EV_A);
1413 w->active = 0; 2287 w->active = 0;
1414} 2288}
1415 2289
1416/*****************************************************************************/ 2290/*****************************************************************************/
1417 2291
1418void 2292void noinline
1419ev_io_start (EV_P_ ev_io *w) 2293ev_io_start (EV_P_ ev_io *w)
1420{ 2294{
1421 int fd = w->fd; 2295 int fd = w->fd;
1422 2296
1423 if (expect_false (ev_is_active (w))) 2297 if (expect_false (ev_is_active (w)))
1424 return; 2298 return;
1425 2299
1426 assert (("ev_io_start called with negative fd", fd >= 0)); 2300 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2301 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2302
2303 EV_FREQUENT_CHECK;
1427 2304
1428 ev_start (EV_A_ (W)w, 1); 2305 ev_start (EV_A_ (W)w, 1);
1429 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2306 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1430 wlist_add ((WL *)&anfds[fd].head, (WL)w); 2307 wlist_add (&anfds[fd].head, (WL)w);
1431 2308
1432 fd_change (EV_A_ fd); 2309 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
1433} 2310 w->events &= ~EV__IOFDSET;
1434 2311
1435void 2312 EV_FREQUENT_CHECK;
2313}
2314
2315void noinline
1436ev_io_stop (EV_P_ ev_io *w) 2316ev_io_stop (EV_P_ ev_io *w)
1437{ 2317{
1438 ev_clear_pending (EV_A_ (W)w); 2318 clear_pending (EV_A_ (W)w);
1439 if (expect_false (!ev_is_active (w))) 2319 if (expect_false (!ev_is_active (w)))
1440 return; 2320 return;
1441 2321
1442 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2322 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1443 2323
2324 EV_FREQUENT_CHECK;
2325
1444 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 2326 wlist_del (&anfds[w->fd].head, (WL)w);
1445 ev_stop (EV_A_ (W)w); 2327 ev_stop (EV_A_ (W)w);
1446 2328
1447 fd_change (EV_A_ w->fd); 2329 fd_change (EV_A_ w->fd, 1);
1448}
1449 2330
1450void 2331 EV_FREQUENT_CHECK;
2332}
2333
2334void noinline
1451ev_timer_start (EV_P_ ev_timer *w) 2335ev_timer_start (EV_P_ ev_timer *w)
1452{ 2336{
1453 if (expect_false (ev_is_active (w))) 2337 if (expect_false (ev_is_active (w)))
1454 return; 2338 return;
1455 2339
1456 ((WT)w)->at += mn_now; 2340 ev_at (w) += mn_now;
1457 2341
1458 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2342 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1459 2343
2344 EV_FREQUENT_CHECK;
2345
2346 ++timercnt;
1460 ev_start (EV_A_ (W)w, ++timercnt); 2347 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1461 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); 2348 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1462 timers [timercnt - 1] = w; 2349 ANHE_w (timers [ev_active (w)]) = (WT)w;
1463 upheap ((WT *)timers, timercnt - 1); 2350 ANHE_at_cache (timers [ev_active (w)]);
2351 upheap (timers, ev_active (w));
1464 2352
2353 EV_FREQUENT_CHECK;
2354
1465 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2355 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1466} 2356}
1467 2357
1468void 2358void noinline
1469ev_timer_stop (EV_P_ ev_timer *w) 2359ev_timer_stop (EV_P_ ev_timer *w)
1470{ 2360{
1471 ev_clear_pending (EV_A_ (W)w); 2361 clear_pending (EV_A_ (W)w);
1472 if (expect_false (!ev_is_active (w))) 2362 if (expect_false (!ev_is_active (w)))
1473 return; 2363 return;
1474 2364
2365 EV_FREQUENT_CHECK;
2366
2367 {
2368 int active = ev_active (w);
2369
1475 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2370 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
1476 2371
2372 --timercnt;
2373
1477 if (expect_true (((W)w)->active < timercnt--)) 2374 if (expect_true (active < timercnt + HEAP0))
1478 { 2375 {
1479 timers [((W)w)->active - 1] = timers [timercnt]; 2376 timers [active] = timers [timercnt + HEAP0];
1480 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2377 adjustheap (timers, timercnt, active);
1481 } 2378 }
2379 }
1482 2380
1483 ((WT)w)->at -= mn_now; 2381 EV_FREQUENT_CHECK;
2382
2383 ev_at (w) -= mn_now;
1484 2384
1485 ev_stop (EV_A_ (W)w); 2385 ev_stop (EV_A_ (W)w);
1486} 2386}
1487 2387
1488void 2388void noinline
1489ev_timer_again (EV_P_ ev_timer *w) 2389ev_timer_again (EV_P_ ev_timer *w)
1490{ 2390{
2391 EV_FREQUENT_CHECK;
2392
1491 if (ev_is_active (w)) 2393 if (ev_is_active (w))
1492 { 2394 {
1493 if (w->repeat) 2395 if (w->repeat)
1494 { 2396 {
1495 ((WT)w)->at = mn_now + w->repeat; 2397 ev_at (w) = mn_now + w->repeat;
2398 ANHE_at_cache (timers [ev_active (w)]);
1496 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2399 adjustheap (timers, timercnt, ev_active (w));
1497 } 2400 }
1498 else 2401 else
1499 ev_timer_stop (EV_A_ w); 2402 ev_timer_stop (EV_A_ w);
1500 } 2403 }
1501 else if (w->repeat) 2404 else if (w->repeat)
1502 { 2405 {
1503 w->at = w->repeat; 2406 ev_at (w) = w->repeat;
1504 ev_timer_start (EV_A_ w); 2407 ev_timer_start (EV_A_ w);
1505 } 2408 }
2409
2410 EV_FREQUENT_CHECK;
1506} 2411}
1507 2412
1508#if EV_PERIODIC_ENABLE 2413#if EV_PERIODIC_ENABLE
1509void 2414void noinline
1510ev_periodic_start (EV_P_ ev_periodic *w) 2415ev_periodic_start (EV_P_ ev_periodic *w)
1511{ 2416{
1512 if (expect_false (ev_is_active (w))) 2417 if (expect_false (ev_is_active (w)))
1513 return; 2418 return;
1514 2419
1515 if (w->reschedule_cb) 2420 if (w->reschedule_cb)
1516 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2421 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1517 else if (w->interval) 2422 else if (w->interval)
1518 { 2423 {
1519 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2424 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1520 /* this formula differs from the one in periodic_reify because we do not always round up */ 2425 /* this formula differs from the one in periodic_reify because we do not always round up */
1521 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 2426 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1522 } 2427 }
2428 else
2429 ev_at (w) = w->offset;
1523 2430
2431 EV_FREQUENT_CHECK;
2432
2433 ++periodiccnt;
1524 ev_start (EV_A_ (W)w, ++periodiccnt); 2434 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1525 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 2435 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1526 periodics [periodiccnt - 1] = w; 2436 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1527 upheap ((WT *)periodics, periodiccnt - 1); 2437 ANHE_at_cache (periodics [ev_active (w)]);
2438 upheap (periodics, ev_active (w));
1528 2439
2440 EV_FREQUENT_CHECK;
2441
1529 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2442 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1530} 2443}
1531 2444
1532void 2445void noinline
1533ev_periodic_stop (EV_P_ ev_periodic *w) 2446ev_periodic_stop (EV_P_ ev_periodic *w)
1534{ 2447{
1535 ev_clear_pending (EV_A_ (W)w); 2448 clear_pending (EV_A_ (W)w);
1536 if (expect_false (!ev_is_active (w))) 2449 if (expect_false (!ev_is_active (w)))
1537 return; 2450 return;
1538 2451
2452 EV_FREQUENT_CHECK;
2453
2454 {
2455 int active = ev_active (w);
2456
1539 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2457 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
1540 2458
2459 --periodiccnt;
2460
1541 if (expect_true (((W)w)->active < periodiccnt--)) 2461 if (expect_true (active < periodiccnt + HEAP0))
1542 { 2462 {
1543 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 2463 periodics [active] = periodics [periodiccnt + HEAP0];
1544 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 2464 adjustheap (periodics, periodiccnt, active);
1545 } 2465 }
2466 }
2467
2468 EV_FREQUENT_CHECK;
1546 2469
1547 ev_stop (EV_A_ (W)w); 2470 ev_stop (EV_A_ (W)w);
1548} 2471}
1549 2472
1550void 2473void noinline
1551ev_periodic_again (EV_P_ ev_periodic *w) 2474ev_periodic_again (EV_P_ ev_periodic *w)
1552{ 2475{
1553 /* TODO: use adjustheap and recalculation */ 2476 /* TODO: use adjustheap and recalculation */
1554 ev_periodic_stop (EV_A_ w); 2477 ev_periodic_stop (EV_A_ w);
1555 ev_periodic_start (EV_A_ w); 2478 ev_periodic_start (EV_A_ w);
1556} 2479}
1557#endif 2480#endif
1558 2481
1559void 2482#ifndef SA_RESTART
2483# define SA_RESTART 0
2484#endif
2485
2486void noinline
1560ev_idle_start (EV_P_ ev_idle *w) 2487ev_signal_start (EV_P_ ev_signal *w)
1561{ 2488{
2489#if EV_MULTIPLICITY
2490 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2491#endif
1562 if (expect_false (ev_is_active (w))) 2492 if (expect_false (ev_is_active (w)))
1563 return; 2493 return;
1564 2494
1565 ev_start (EV_A_ (W)w, ++idlecnt); 2495 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
1566 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1567 idles [idlecnt - 1] = w;
1568}
1569 2496
1570void 2497 evpipe_init (EV_A);
1571ev_idle_stop (EV_P_ ev_idle *w) 2498
1572{ 2499 EV_FREQUENT_CHECK;
1573 ev_clear_pending (EV_A_ (W)w);
1574 if (expect_false (!ev_is_active (w)))
1575 return;
1576 2500
1577 { 2501 {
1578 int active = ((W)w)->active; 2502#ifndef _WIN32
1579 idles [active - 1] = idles [--idlecnt]; 2503 sigset_t full, prev;
1580 ((W)idles [active - 1])->active = active; 2504 sigfillset (&full);
2505 sigprocmask (SIG_SETMASK, &full, &prev);
2506#endif
2507
2508 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2509
2510#ifndef _WIN32
2511 sigprocmask (SIG_SETMASK, &prev, 0);
2512#endif
1581 } 2513 }
1582 2514
1583 ev_stop (EV_A_ (W)w);
1584}
1585
1586void
1587ev_prepare_start (EV_P_ ev_prepare *w)
1588{
1589 if (expect_false (ev_is_active (w)))
1590 return;
1591
1592 ev_start (EV_A_ (W)w, ++preparecnt);
1593 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1594 prepares [preparecnt - 1] = w;
1595}
1596
1597void
1598ev_prepare_stop (EV_P_ ev_prepare *w)
1599{
1600 ev_clear_pending (EV_A_ (W)w);
1601 if (expect_false (!ev_is_active (w)))
1602 return;
1603
1604 {
1605 int active = ((W)w)->active;
1606 prepares [active - 1] = prepares [--preparecnt];
1607 ((W)prepares [active - 1])->active = active;
1608 }
1609
1610 ev_stop (EV_A_ (W)w);
1611}
1612
1613void
1614ev_check_start (EV_P_ ev_check *w)
1615{
1616 if (expect_false (ev_is_active (w)))
1617 return;
1618
1619 ev_start (EV_A_ (W)w, ++checkcnt);
1620 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1621 checks [checkcnt - 1] = w;
1622}
1623
1624void
1625ev_check_stop (EV_P_ ev_check *w)
1626{
1627 ev_clear_pending (EV_A_ (W)w);
1628 if (expect_false (!ev_is_active (w)))
1629 return;
1630
1631 {
1632 int active = ((W)w)->active;
1633 checks [active - 1] = checks [--checkcnt];
1634 ((W)checks [active - 1])->active = active;
1635 }
1636
1637 ev_stop (EV_A_ (W)w);
1638}
1639
1640#ifndef SA_RESTART
1641# define SA_RESTART 0
1642#endif
1643
1644void
1645ev_signal_start (EV_P_ ev_signal *w)
1646{
1647#if EV_MULTIPLICITY
1648 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1649#endif
1650 if (expect_false (ev_is_active (w)))
1651 return;
1652
1653 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1654
1655 ev_start (EV_A_ (W)w, 1); 2515 ev_start (EV_A_ (W)w, 1);
1656 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1657 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 2516 wlist_add (&signals [w->signum - 1].head, (WL)w);
1658 2517
1659 if (!((WL)w)->next) 2518 if (!((WL)w)->next)
1660 { 2519 {
1661#if _WIN32 2520#if _WIN32
1662 signal (w->signum, sighandler); 2521 signal (w->signum, ev_sighandler);
1663#else 2522#else
1664 struct sigaction sa; 2523 struct sigaction sa;
1665 sa.sa_handler = sighandler; 2524 sa.sa_handler = ev_sighandler;
1666 sigfillset (&sa.sa_mask); 2525 sigfillset (&sa.sa_mask);
1667 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2526 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1668 sigaction (w->signum, &sa, 0); 2527 sigaction (w->signum, &sa, 0);
1669#endif 2528#endif
1670 } 2529 }
1671}
1672 2530
1673void 2531 EV_FREQUENT_CHECK;
2532}
2533
2534void noinline
1674ev_signal_stop (EV_P_ ev_signal *w) 2535ev_signal_stop (EV_P_ ev_signal *w)
1675{ 2536{
1676 ev_clear_pending (EV_A_ (W)w); 2537 clear_pending (EV_A_ (W)w);
1677 if (expect_false (!ev_is_active (w))) 2538 if (expect_false (!ev_is_active (w)))
1678 return; 2539 return;
1679 2540
2541 EV_FREQUENT_CHECK;
2542
1680 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 2543 wlist_del (&signals [w->signum - 1].head, (WL)w);
1681 ev_stop (EV_A_ (W)w); 2544 ev_stop (EV_A_ (W)w);
1682 2545
1683 if (!signals [w->signum - 1].head) 2546 if (!signals [w->signum - 1].head)
1684 signal (w->signum, SIG_DFL); 2547 signal (w->signum, SIG_DFL);
2548
2549 EV_FREQUENT_CHECK;
1685} 2550}
1686 2551
1687void 2552void
1688ev_child_start (EV_P_ ev_child *w) 2553ev_child_start (EV_P_ ev_child *w)
1689{ 2554{
1690#if EV_MULTIPLICITY 2555#if EV_MULTIPLICITY
1691 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2556 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1692#endif 2557#endif
1693 if (expect_false (ev_is_active (w))) 2558 if (expect_false (ev_is_active (w)))
1694 return; 2559 return;
1695 2560
2561 EV_FREQUENT_CHECK;
2562
1696 ev_start (EV_A_ (W)w, 1); 2563 ev_start (EV_A_ (W)w, 1);
1697 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2564 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2565
2566 EV_FREQUENT_CHECK;
1698} 2567}
1699 2568
1700void 2569void
1701ev_child_stop (EV_P_ ev_child *w) 2570ev_child_stop (EV_P_ ev_child *w)
1702{ 2571{
1703 ev_clear_pending (EV_A_ (W)w); 2572 clear_pending (EV_A_ (W)w);
1704 if (expect_false (!ev_is_active (w))) 2573 if (expect_false (!ev_is_active (w)))
1705 return; 2574 return;
1706 2575
2576 EV_FREQUENT_CHECK;
2577
1707 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2578 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1708 ev_stop (EV_A_ (W)w); 2579 ev_stop (EV_A_ (W)w);
1709}
1710 2580
2581 EV_FREQUENT_CHECK;
2582}
2583
1711#if EV_EMBED_ENABLE 2584#if EV_STAT_ENABLE
2585
2586# ifdef _WIN32
2587# undef lstat
2588# define lstat(a,b) _stati64 (a,b)
2589# endif
2590
2591#define DEF_STAT_INTERVAL 5.0074891
2592#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2593#define MIN_STAT_INTERVAL 0.1074891
2594
2595static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2596
2597#if EV_USE_INOTIFY
2598# define EV_INOTIFY_BUFSIZE 8192
2599
1712void noinline 2600static void noinline
1713ev_embed_sweep (EV_P_ ev_embed *w) 2601infy_add (EV_P_ ev_stat *w)
1714{ 2602{
1715 ev_loop (w->loop, EVLOOP_NONBLOCK); 2603 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);
2604
2605 if (w->wd < 0)
2606 {
2607 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2608 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2609
2610 /* monitor some parent directory for speedup hints */
2611 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2612 /* but an efficiency issue only */
2613 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2614 {
2615 char path [4096];
2616 strcpy (path, w->path);
2617
2618 do
2619 {
2620 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2621 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2622
2623 char *pend = strrchr (path, '/');
2624
2625 if (!pend || pend == path)
2626 break;
2627
2628 *pend = 0;
2629 w->wd = inotify_add_watch (fs_fd, path, mask);
2630 }
2631 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2632 }
2633 }
2634
2635 if (w->wd >= 0)
2636 {
2637 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2638
2639 /* now local changes will be tracked by inotify, but remote changes won't */
2640 /* unless the filesystem it known to be local, we therefore still poll */
2641 /* also do poll on <2.6.25, but with normal frequency */
2642 struct statfs sfs;
2643
2644 if (fs_2625 && !statfs (w->path, &sfs))
2645 if (sfs.f_type == 0x1373 /* devfs */
2646 || sfs.f_type == 0xEF53 /* ext2/3 */
2647 || sfs.f_type == 0x3153464a /* jfs */
2648 || sfs.f_type == 0x52654973 /* reiser3 */
2649 || sfs.f_type == 0x01021994 /* tempfs */
2650 || sfs.f_type == 0x58465342 /* xfs */)
2651 return;
2652
2653 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2654 ev_timer_again (EV_A_ &w->timer);
2655 }
2656}
2657
2658static void noinline
2659infy_del (EV_P_ ev_stat *w)
2660{
2661 int slot;
2662 int wd = w->wd;
2663
2664 if (wd < 0)
2665 return;
2666
2667 w->wd = -2;
2668 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2669 wlist_del (&fs_hash [slot].head, (WL)w);
2670
2671 /* remove this watcher, if others are watching it, they will rearm */
2672 inotify_rm_watch (fs_fd, wd);
2673}
2674
2675static void noinline
2676infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2677{
2678 if (slot < 0)
2679 /* overflow, need to check for all hash slots */
2680 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2681 infy_wd (EV_A_ slot, wd, ev);
2682 else
2683 {
2684 WL w_;
2685
2686 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2687 {
2688 ev_stat *w = (ev_stat *)w_;
2689 w_ = w_->next; /* lets us remove this watcher and all before it */
2690
2691 if (w->wd == wd || wd == -1)
2692 {
2693 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2694 {
2695 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2696 w->wd = -1;
2697 infy_add (EV_A_ w); /* re-add, no matter what */
2698 }
2699
2700 stat_timer_cb (EV_A_ &w->timer, 0);
2701 }
2702 }
2703 }
1716} 2704}
1717 2705
1718static void 2706static void
1719embed_cb (EV_P_ ev_io *io, int revents) 2707infy_cb (EV_P_ ev_io *w, int revents)
1720{ 2708{
1721 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 2709 char buf [EV_INOTIFY_BUFSIZE];
2710 struct inotify_event *ev = (struct inotify_event *)buf;
2711 int ofs;
2712 int len = read (fs_fd, buf, sizeof (buf));
1722 2713
1723 if (ev_cb (w)) 2714 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1724 ev_feed_event (EV_A_ (W)w, EV_EMBED); 2715 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1725 else
1726 ev_embed_sweep (loop, w);
1727} 2716}
1728 2717
1729void 2718inline_size void
1730ev_embed_start (EV_P_ ev_embed *w) 2719check_2625 (EV_P)
1731{ 2720{
1732 if (expect_false (ev_is_active (w))) 2721 /* kernels < 2.6.25 are borked
2722 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2723 */
2724 struct utsname buf;
2725 int major, minor, micro;
2726
2727 if (uname (&buf))
1733 return; 2728 return;
1734 2729
1735 { 2730 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
1736 struct ev_loop *loop = w->loop;
1737 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1738 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
1739 }
1740
1741 ev_set_priority (&w->io, ev_priority (w));
1742 ev_io_start (EV_A_ &w->io);
1743
1744 ev_start (EV_A_ (W)w, 1);
1745}
1746
1747void
1748ev_embed_stop (EV_P_ ev_embed *w)
1749{
1750 ev_clear_pending (EV_A_ (W)w);
1751 if (expect_false (!ev_is_active (w)))
1752 return; 2731 return;
1753 2732
1754 ev_io_stop (EV_A_ &w->io); 2733 if (major < 2
2734 || (major == 2 && minor < 6)
2735 || (major == 2 && minor == 6 && micro < 25))
2736 return;
1755 2737
1756 ev_stop (EV_A_ (W)w); 2738 fs_2625 = 1;
1757} 2739}
1758#endif
1759 2740
1760#if EV_STAT_ENABLE 2741inline_size void
2742infy_init (EV_P)
2743{
2744 if (fs_fd != -2)
2745 return;
1761 2746
2747 fs_fd = -1;
2748
2749 check_2625 (EV_A);
2750
2751 fs_fd = inotify_init ();
2752
2753 if (fs_fd >= 0)
2754 {
2755 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2756 ev_set_priority (&fs_w, EV_MAXPRI);
2757 ev_io_start (EV_A_ &fs_w);
2758 }
2759}
2760
2761inline_size void
2762infy_fork (EV_P)
2763{
2764 int slot;
2765
2766 if (fs_fd < 0)
2767 return;
2768
2769 close (fs_fd);
2770 fs_fd = inotify_init ();
2771
2772 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2773 {
2774 WL w_ = fs_hash [slot].head;
2775 fs_hash [slot].head = 0;
2776
2777 while (w_)
2778 {
2779 ev_stat *w = (ev_stat *)w_;
2780 w_ = w_->next; /* lets us add this watcher */
2781
2782 w->wd = -1;
2783
2784 if (fs_fd >= 0)
2785 infy_add (EV_A_ w); /* re-add, no matter what */
2786 else
2787 ev_timer_again (EV_A_ &w->timer);
2788 }
2789 }
2790}
2791
2792#endif
2793
1762# ifdef _WIN32 2794#ifdef _WIN32
1763# define lstat(a,b) stat(a,b) 2795# define EV_LSTAT(p,b) _stati64 (p, b)
2796#else
2797# define EV_LSTAT(p,b) lstat (p, b)
1764# endif 2798#endif
1765 2799
1766void 2800void
1767ev_stat_stat (EV_P_ ev_stat *w) 2801ev_stat_stat (EV_P_ ev_stat *w)
1768{ 2802{
1769 if (lstat (w->path, &w->attr) < 0) 2803 if (lstat (w->path, &w->attr) < 0)
1770 w->attr.st_nlink = 0; 2804 w->attr.st_nlink = 0;
1771 else if (!w->attr.st_nlink) 2805 else if (!w->attr.st_nlink)
1772 w->attr.st_nlink = 1; 2806 w->attr.st_nlink = 1;
1773} 2807}
1774 2808
1775static void 2809static void noinline
1776stat_timer_cb (EV_P_ ev_timer *w_, int revents) 2810stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1777{ 2811{
1778 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 2812 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1779 2813
1780 /* we copy this here each the time so that */ 2814 /* we copy this here each the time so that */
1781 /* prev has the old value when the callback gets invoked */ 2815 /* prev has the old value when the callback gets invoked */
1782 w->prev = w->attr; 2816 w->prev = w->attr;
1783 ev_stat_stat (EV_A_ w); 2817 ev_stat_stat (EV_A_ w);
1784 2818
1785 if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata))) 2819 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2820 if (
2821 w->prev.st_dev != w->attr.st_dev
2822 || w->prev.st_ino != w->attr.st_ino
2823 || w->prev.st_mode != w->attr.st_mode
2824 || w->prev.st_nlink != w->attr.st_nlink
2825 || w->prev.st_uid != w->attr.st_uid
2826 || w->prev.st_gid != w->attr.st_gid
2827 || w->prev.st_rdev != w->attr.st_rdev
2828 || w->prev.st_size != w->attr.st_size
2829 || w->prev.st_atime != w->attr.st_atime
2830 || w->prev.st_mtime != w->attr.st_mtime
2831 || w->prev.st_ctime != w->attr.st_ctime
2832 ) {
2833 #if EV_USE_INOTIFY
2834 if (fs_fd >= 0)
2835 {
2836 infy_del (EV_A_ w);
2837 infy_add (EV_A_ w);
2838 ev_stat_stat (EV_A_ w); /* avoid race... */
2839 }
2840 #endif
2841
1786 ev_feed_event (EV_A_ w, EV_STAT); 2842 ev_feed_event (EV_A_ w, EV_STAT);
2843 }
1787} 2844}
1788 2845
1789void 2846void
1790ev_stat_start (EV_P_ ev_stat *w) 2847ev_stat_start (EV_P_ ev_stat *w)
1791{ 2848{
1792 if (expect_false (ev_is_active (w))) 2849 if (expect_false (ev_is_active (w)))
1793 return; 2850 return;
1794 2851
1795 /* since we use memcmp, we need to clear any padding data etc. */
1796 memset (&w->prev, 0, sizeof (ev_statdata));
1797 memset (&w->attr, 0, sizeof (ev_statdata));
1798
1799 ev_stat_stat (EV_A_ w); 2852 ev_stat_stat (EV_A_ w);
1800 2853
2854 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2855 w->interval = MIN_STAT_INTERVAL;
2856
1801 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 2857 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
1802 ev_set_priority (&w->timer, ev_priority (w)); 2858 ev_set_priority (&w->timer, ev_priority (w));
2859
2860#if EV_USE_INOTIFY
2861 infy_init (EV_A);
2862
2863 if (fs_fd >= 0)
2864 infy_add (EV_A_ w);
2865 else
2866#endif
1803 ev_timer_start (EV_A_ &w->timer); 2867 ev_timer_again (EV_A_ &w->timer);
1804 2868
1805 ev_start (EV_A_ (W)w, 1); 2869 ev_start (EV_A_ (W)w, 1);
2870
2871 EV_FREQUENT_CHECK;
1806} 2872}
1807 2873
1808void 2874void
1809ev_stat_stop (EV_P_ ev_stat *w) 2875ev_stat_stop (EV_P_ ev_stat *w)
1810{ 2876{
1811 ev_clear_pending (EV_A_ (W)w); 2877 clear_pending (EV_A_ (W)w);
1812 if (expect_false (!ev_is_active (w))) 2878 if (expect_false (!ev_is_active (w)))
1813 return; 2879 return;
1814 2880
2881 EV_FREQUENT_CHECK;
2882
2883#if EV_USE_INOTIFY
2884 infy_del (EV_A_ w);
2885#endif
1815 ev_timer_stop (EV_A_ &w->timer); 2886 ev_timer_stop (EV_A_ &w->timer);
1816 2887
1817 ev_stop (EV_A_ (W)w); 2888 ev_stop (EV_A_ (W)w);
2889
2890 EV_FREQUENT_CHECK;
2891}
2892#endif
2893
2894#if EV_IDLE_ENABLE
2895void
2896ev_idle_start (EV_P_ ev_idle *w)
2897{
2898 if (expect_false (ev_is_active (w)))
2899 return;
2900
2901 pri_adjust (EV_A_ (W)w);
2902
2903 EV_FREQUENT_CHECK;
2904
2905 {
2906 int active = ++idlecnt [ABSPRI (w)];
2907
2908 ++idleall;
2909 ev_start (EV_A_ (W)w, active);
2910
2911 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2912 idles [ABSPRI (w)][active - 1] = w;
2913 }
2914
2915 EV_FREQUENT_CHECK;
2916}
2917
2918void
2919ev_idle_stop (EV_P_ ev_idle *w)
2920{
2921 clear_pending (EV_A_ (W)w);
2922 if (expect_false (!ev_is_active (w)))
2923 return;
2924
2925 EV_FREQUENT_CHECK;
2926
2927 {
2928 int active = ev_active (w);
2929
2930 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2931 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2932
2933 ev_stop (EV_A_ (W)w);
2934 --idleall;
2935 }
2936
2937 EV_FREQUENT_CHECK;
2938}
2939#endif
2940
2941void
2942ev_prepare_start (EV_P_ ev_prepare *w)
2943{
2944 if (expect_false (ev_is_active (w)))
2945 return;
2946
2947 EV_FREQUENT_CHECK;
2948
2949 ev_start (EV_A_ (W)w, ++preparecnt);
2950 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2951 prepares [preparecnt - 1] = w;
2952
2953 EV_FREQUENT_CHECK;
2954}
2955
2956void
2957ev_prepare_stop (EV_P_ ev_prepare *w)
2958{
2959 clear_pending (EV_A_ (W)w);
2960 if (expect_false (!ev_is_active (w)))
2961 return;
2962
2963 EV_FREQUENT_CHECK;
2964
2965 {
2966 int active = ev_active (w);
2967
2968 prepares [active - 1] = prepares [--preparecnt];
2969 ev_active (prepares [active - 1]) = active;
2970 }
2971
2972 ev_stop (EV_A_ (W)w);
2973
2974 EV_FREQUENT_CHECK;
2975}
2976
2977void
2978ev_check_start (EV_P_ ev_check *w)
2979{
2980 if (expect_false (ev_is_active (w)))
2981 return;
2982
2983 EV_FREQUENT_CHECK;
2984
2985 ev_start (EV_A_ (W)w, ++checkcnt);
2986 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2987 checks [checkcnt - 1] = w;
2988
2989 EV_FREQUENT_CHECK;
2990}
2991
2992void
2993ev_check_stop (EV_P_ ev_check *w)
2994{
2995 clear_pending (EV_A_ (W)w);
2996 if (expect_false (!ev_is_active (w)))
2997 return;
2998
2999 EV_FREQUENT_CHECK;
3000
3001 {
3002 int active = ev_active (w);
3003
3004 checks [active - 1] = checks [--checkcnt];
3005 ev_active (checks [active - 1]) = active;
3006 }
3007
3008 ev_stop (EV_A_ (W)w);
3009
3010 EV_FREQUENT_CHECK;
3011}
3012
3013#if EV_EMBED_ENABLE
3014void noinline
3015ev_embed_sweep (EV_P_ ev_embed *w)
3016{
3017 ev_loop (w->other, EVLOOP_NONBLOCK);
3018}
3019
3020static void
3021embed_io_cb (EV_P_ ev_io *io, int revents)
3022{
3023 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3024
3025 if (ev_cb (w))
3026 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3027 else
3028 ev_loop (w->other, EVLOOP_NONBLOCK);
3029}
3030
3031static void
3032embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3033{
3034 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3035
3036 {
3037 struct ev_loop *loop = w->other;
3038
3039 while (fdchangecnt)
3040 {
3041 fd_reify (EV_A);
3042 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3043 }
3044 }
3045}
3046
3047static void
3048embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3049{
3050 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3051
3052 ev_embed_stop (EV_A_ w);
3053
3054 {
3055 struct ev_loop *loop = w->other;
3056
3057 ev_loop_fork (EV_A);
3058 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3059 }
3060
3061 ev_embed_start (EV_A_ w);
3062}
3063
3064#if 0
3065static void
3066embed_idle_cb (EV_P_ ev_idle *idle, int revents)
3067{
3068 ev_idle_stop (EV_A_ idle);
3069}
3070#endif
3071
3072void
3073ev_embed_start (EV_P_ ev_embed *w)
3074{
3075 if (expect_false (ev_is_active (w)))
3076 return;
3077
3078 {
3079 struct ev_loop *loop = w->other;
3080 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3081 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3082 }
3083
3084 EV_FREQUENT_CHECK;
3085
3086 ev_set_priority (&w->io, ev_priority (w));
3087 ev_io_start (EV_A_ &w->io);
3088
3089 ev_prepare_init (&w->prepare, embed_prepare_cb);
3090 ev_set_priority (&w->prepare, EV_MINPRI);
3091 ev_prepare_start (EV_A_ &w->prepare);
3092
3093 ev_fork_init (&w->fork, embed_fork_cb);
3094 ev_fork_start (EV_A_ &w->fork);
3095
3096 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
3097
3098 ev_start (EV_A_ (W)w, 1);
3099
3100 EV_FREQUENT_CHECK;
3101}
3102
3103void
3104ev_embed_stop (EV_P_ ev_embed *w)
3105{
3106 clear_pending (EV_A_ (W)w);
3107 if (expect_false (!ev_is_active (w)))
3108 return;
3109
3110 EV_FREQUENT_CHECK;
3111
3112 ev_io_stop (EV_A_ &w->io);
3113 ev_prepare_stop (EV_A_ &w->prepare);
3114 ev_fork_stop (EV_A_ &w->fork);
3115
3116 EV_FREQUENT_CHECK;
3117}
3118#endif
3119
3120#if EV_FORK_ENABLE
3121void
3122ev_fork_start (EV_P_ ev_fork *w)
3123{
3124 if (expect_false (ev_is_active (w)))
3125 return;
3126
3127 EV_FREQUENT_CHECK;
3128
3129 ev_start (EV_A_ (W)w, ++forkcnt);
3130 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
3131 forks [forkcnt - 1] = w;
3132
3133 EV_FREQUENT_CHECK;
3134}
3135
3136void
3137ev_fork_stop (EV_P_ ev_fork *w)
3138{
3139 clear_pending (EV_A_ (W)w);
3140 if (expect_false (!ev_is_active (w)))
3141 return;
3142
3143 EV_FREQUENT_CHECK;
3144
3145 {
3146 int active = ev_active (w);
3147
3148 forks [active - 1] = forks [--forkcnt];
3149 ev_active (forks [active - 1]) = active;
3150 }
3151
3152 ev_stop (EV_A_ (W)w);
3153
3154 EV_FREQUENT_CHECK;
3155}
3156#endif
3157
3158#if EV_ASYNC_ENABLE
3159void
3160ev_async_start (EV_P_ ev_async *w)
3161{
3162 if (expect_false (ev_is_active (w)))
3163 return;
3164
3165 evpipe_init (EV_A);
3166
3167 EV_FREQUENT_CHECK;
3168
3169 ev_start (EV_A_ (W)w, ++asynccnt);
3170 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
3171 asyncs [asynccnt - 1] = w;
3172
3173 EV_FREQUENT_CHECK;
3174}
3175
3176void
3177ev_async_stop (EV_P_ ev_async *w)
3178{
3179 clear_pending (EV_A_ (W)w);
3180 if (expect_false (!ev_is_active (w)))
3181 return;
3182
3183 EV_FREQUENT_CHECK;
3184
3185 {
3186 int active = ev_active (w);
3187
3188 asyncs [active - 1] = asyncs [--asynccnt];
3189 ev_active (asyncs [active - 1]) = active;
3190 }
3191
3192 ev_stop (EV_A_ (W)w);
3193
3194 EV_FREQUENT_CHECK;
3195}
3196
3197void
3198ev_async_send (EV_P_ ev_async *w)
3199{
3200 w->sent = 1;
3201 evpipe_write (EV_A_ &gotasync);
1818} 3202}
1819#endif 3203#endif
1820 3204
1821/*****************************************************************************/ 3205/*****************************************************************************/
1822 3206
… …
1832once_cb (EV_P_ struct ev_once *once, int revents) 3216once_cb (EV_P_ struct ev_once *once, int revents)
1833{ 3217{
1834 void (*cb)(int revents, void *arg) = once->cb; 3218 void (*cb)(int revents, void *arg) = once->cb;
1835 void *arg = once->arg; 3219 void *arg = once->arg;
1836 3220
1837 ev_io_stop (EV_A_ &once->io); 3221 ev_io_stop (EV_A_ &once->io);
1838 ev_timer_stop (EV_A_ &once->to); 3222 ev_timer_stop (EV_A_ &once->to);
1839 ev_free (once); 3223 ev_free (once);
1840 3224
1841 cb (revents, arg); 3225 cb (revents, arg);
1842} 3226}
1843 3227
1844static void 3228static void
1845once_cb_io (EV_P_ ev_io *w, int revents) 3229once_cb_io (EV_P_ ev_io *w, int revents)
1846{ 3230{
1847 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3231 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3232
3233 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
1848} 3234}
1849 3235
1850static void 3236static void
1851once_cb_to (EV_P_ ev_timer *w, int revents) 3237once_cb_to (EV_P_ ev_timer *w, int revents)
1852{ 3238{
1853 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3239 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3240
3241 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
1854} 3242}
1855 3243
1856void 3244void
1857ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3245ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1858{ 3246{
… …
1880 ev_timer_set (&once->to, timeout, 0.); 3268 ev_timer_set (&once->to, timeout, 0.);
1881 ev_timer_start (EV_A_ &once->to); 3269 ev_timer_start (EV_A_ &once->to);
1882 } 3270 }
1883} 3271}
1884 3272
3273/*****************************************************************************/
3274
3275#if EV_WALK_ENABLE
3276void
3277ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3278{
3279 int i, j;
3280 ev_watcher_list *wl, *wn;
3281
3282 if (types & (EV_IO | EV_EMBED))
3283 for (i = 0; i < anfdmax; ++i)
3284 for (wl = anfds [i].head; wl; )
3285 {
3286 wn = wl->next;
3287
3288#if EV_EMBED_ENABLE
3289 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3290 {
3291 if (types & EV_EMBED)
3292 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3293 }
3294 else
3295#endif
3296#if EV_USE_INOTIFY
3297 if (ev_cb ((ev_io *)wl) == infy_cb)
3298 ;
3299 else
3300#endif
3301 if ((ev_io *)wl != &pipe_w)
3302 if (types & EV_IO)
3303 cb (EV_A_ EV_IO, wl);
3304
3305 wl = wn;
3306 }
3307
3308 if (types & (EV_TIMER | EV_STAT))
3309 for (i = timercnt + HEAP0; i-- > HEAP0; )
3310#if EV_STAT_ENABLE
3311 /*TODO: timer is not always active*/
3312 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3313 {
3314 if (types & EV_STAT)
3315 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3316 }
3317 else
3318#endif
3319 if (types & EV_TIMER)
3320 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3321
3322#if EV_PERIODIC_ENABLE
3323 if (types & EV_PERIODIC)
3324 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3325 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3326#endif
3327
3328#if EV_IDLE_ENABLE
3329 if (types & EV_IDLE)
3330 for (j = NUMPRI; i--; )
3331 for (i = idlecnt [j]; i--; )
3332 cb (EV_A_ EV_IDLE, idles [j][i]);
3333#endif
3334
3335#if EV_FORK_ENABLE
3336 if (types & EV_FORK)
3337 for (i = forkcnt; i--; )
3338 if (ev_cb (forks [i]) != embed_fork_cb)
3339 cb (EV_A_ EV_FORK, forks [i]);
3340#endif
3341
3342#if EV_ASYNC_ENABLE
3343 if (types & EV_ASYNC)
3344 for (i = asynccnt; i--; )
3345 cb (EV_A_ EV_ASYNC, asyncs [i]);
3346#endif
3347
3348 if (types & EV_PREPARE)
3349 for (i = preparecnt; i--; )
3350#if EV_EMBED_ENABLE
3351 if (ev_cb (prepares [i]) != embed_prepare_cb)
3352#endif
3353 cb (EV_A_ EV_PREPARE, prepares [i]);
3354
3355 if (types & EV_CHECK)
3356 for (i = checkcnt; i--; )
3357 cb (EV_A_ EV_CHECK, checks [i]);
3358
3359 if (types & EV_SIGNAL)
3360 for (i = 0; i < signalmax; ++i)
3361 for (wl = signals [i].head; wl; )
3362 {
3363 wn = wl->next;
3364 cb (EV_A_ EV_SIGNAL, wl);
3365 wl = wn;
3366 }
3367
3368 if (types & EV_CHILD)
3369 for (i = EV_PID_HASHSIZE; i--; )
3370 for (wl = childs [i]; wl; )
3371 {
3372 wn = wl->next;
3373 cb (EV_A_ EV_CHILD, wl);
3374 wl = wn;
3375 }
3376/* EV_STAT 0x00001000 /* stat data changed */
3377/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3378}
3379#endif
3380
3381#if EV_MULTIPLICITY
3382 #include "ev_wrap.h"
3383#endif
3384
1885#ifdef __cplusplus 3385#ifdef __cplusplus
1886} 3386}
1887#endif 3387#endif
1888 3388

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