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Comparing libev/ev.c (file contents):
Revision 1.140 by root, Mon Nov 26 19:49:36 2007 UTC vs.
Revision 1.290 by root, Mon Jun 29 04:41:34 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/* this block fixes any misconfiguration where we know we run into trouble otherwise */
162 290
163#ifndef CLOCK_MONOTONIC 291#ifndef CLOCK_MONOTONIC
164# undef EV_USE_MONOTONIC 292# undef EV_USE_MONOTONIC
165# define EV_USE_MONOTONIC 0 293# define EV_USE_MONOTONIC 0
166#endif 294#endif
… …
168#ifndef CLOCK_REALTIME 296#ifndef CLOCK_REALTIME
169# undef EV_USE_REALTIME 297# undef EV_USE_REALTIME
170# define EV_USE_REALTIME 0 298# define EV_USE_REALTIME 0
171#endif 299#endif
172 300
301#if !EV_STAT_ENABLE
302# undef EV_USE_INOTIFY
303# define EV_USE_INOTIFY 0
304#endif
305
306#if !EV_USE_NANOSLEEP
307# ifndef _WIN32
308# include <sys/select.h>
309# endif
310#endif
311
312#if EV_USE_INOTIFY
313# include <sys/utsname.h>
314# include <sys/statfs.h>
315# include <sys/inotify.h>
316/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
317# ifndef IN_DONT_FOLLOW
318# undef EV_USE_INOTIFY
319# define EV_USE_INOTIFY 0
320# endif
321#endif
322
173#if EV_SELECT_IS_WINSOCKET 323#if EV_SELECT_IS_WINSOCKET
174# include <winsock.h> 324# include <winsock.h>
175#endif 325#endif
176 326
327/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
328/* which makes programs even slower. might work on other unices, too. */
329#if EV_USE_CLOCK_SYSCALL
330# include <syscall.h>
331# ifdef SYS_clock_gettime
332# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
333# undef EV_USE_MONOTONIC
334# define EV_USE_MONOTONIC 1
335# else
336# undef EV_USE_CLOCK_SYSCALL
337# define EV_USE_CLOCK_SYSCALL 0
338# endif
339#endif
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
389
390#if EV_MINIMAL
391# define inline_speed static noinline
392#else
393# define inline_speed static inline
394#endif
209 395
210#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
211#define ABSPRI(w) ((w)->priority - EV_MINPRI) 397#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
212 398
213#define EMPTY0 /* required for microsofts broken pseudo-c compiler */ 399#define EMPTY /* required for microsofts broken pseudo-c compiler */
214#define EMPTY2(a,b) /* used to suppress some warnings */ 400#define EMPTY2(a,b) /* used to suppress some warnings */
215 401
216typedef ev_watcher *W; 402typedef ev_watcher *W;
217typedef ev_watcher_list *WL; 403typedef ev_watcher_list *WL;
218typedef ev_watcher_time *WT; 404typedef ev_watcher_time *WT;
219 405
406#define ev_active(w) ((W)(w))->active
407#define ev_at(w) ((WT)(w))->at
408
409#if EV_USE_REALTIME
410/* sig_atomic_t is used to avoid per-thread variables or locking but still */
411/* giving it a reasonably high chance of working on typical architetcures */
412static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
413#endif
414
415#if EV_USE_MONOTONIC
220static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 416static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
417#endif
221 418
222#ifdef _WIN32 419#ifdef _WIN32
223# include "ev_win32.c" 420# include "ev_win32.c"
224#endif 421#endif
225 422
226/*****************************************************************************/ 423/*****************************************************************************/
227 424
228static void (*syserr_cb)(const char *msg); 425static void (*syserr_cb)(const char *msg);
229 426
427void
230void ev_set_syserr_cb (void (*cb)(const char *msg)) 428ev_set_syserr_cb (void (*cb)(const char *msg))
231{ 429{
232 syserr_cb = cb; 430 syserr_cb = cb;
233} 431}
234 432
235static void 433static void noinline
236syserr (const char *msg) 434ev_syserr (const char *msg)
237{ 435{
238 if (!msg) 436 if (!msg)
239 msg = "(libev) system error"; 437 msg = "(libev) system error";
240 438
241 if (syserr_cb) 439 if (syserr_cb)
… …
245 perror (msg); 443 perror (msg);
246 abort (); 444 abort ();
247 } 445 }
248} 446}
249 447
448static void *
449ev_realloc_emul (void *ptr, long size)
450{
451 /* some systems, notably openbsd and darwin, fail to properly
452 * implement realloc (x, 0) (as required by both ansi c-98 and
453 * the single unix specification, so work around them here.
454 */
455
456 if (size)
457 return realloc (ptr, size);
458
459 free (ptr);
460 return 0;
461}
462
250static void *(*alloc)(void *ptr, long size); 463static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
251 464
465void
252void ev_set_allocator (void *(*cb)(void *ptr, long size)) 466ev_set_allocator (void *(*cb)(void *ptr, long size))
253{ 467{
254 alloc = cb; 468 alloc = cb;
255} 469}
256 470
257static void * 471inline_speed void *
258ev_realloc (void *ptr, long size) 472ev_realloc (void *ptr, long size)
259{ 473{
260 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 474 ptr = alloc (ptr, size);
261 475
262 if (!ptr && size) 476 if (!ptr && size)
263 { 477 {
264 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 478 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
265 abort (); 479 abort ();
… …
271#define ev_malloc(size) ev_realloc (0, (size)) 485#define ev_malloc(size) ev_realloc (0, (size))
272#define ev_free(ptr) ev_realloc ((ptr), 0) 486#define ev_free(ptr) ev_realloc ((ptr), 0)
273 487
274/*****************************************************************************/ 488/*****************************************************************************/
275 489
490/* file descriptor info structure */
276typedef struct 491typedef struct
277{ 492{
278 WL head; 493 WL head;
279 unsigned char events; 494 unsigned char events; /* the events watched for */
495 unsigned char reify; /* flag set when this ANFD needs reification */
496 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
280 unsigned char reify; 497 unsigned char unused;
498#if EV_USE_EPOLL
499 unsigned int egen; /* generation counter to counter epoll bugs */
500#endif
281#if EV_SELECT_IS_WINSOCKET 501#if EV_SELECT_IS_WINSOCKET
282 SOCKET handle; 502 SOCKET handle;
283#endif 503#endif
284} ANFD; 504} ANFD;
285 505
506/* stores the pending event set for a given watcher */
286typedef struct 507typedef struct
287{ 508{
288 W w; 509 W w;
289 int events; 510 int events; /* the pending event set for the given watcher */
290} ANPENDING; 511} ANPENDING;
512
513#if EV_USE_INOTIFY
514/* hash table entry per inotify-id */
515typedef struct
516{
517 WL head;
518} ANFS;
519#endif
520
521/* Heap Entry */
522#if EV_HEAP_CACHE_AT
523 /* a heap element */
524 typedef struct {
525 ev_tstamp at;
526 WT w;
527 } ANHE;
528
529 #define ANHE_w(he) (he).w /* access watcher, read-write */
530 #define ANHE_at(he) (he).at /* access cached at, read-only */
531 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
532#else
533 /* a heap element */
534 typedef WT ANHE;
535
536 #define ANHE_w(he) (he)
537 #define ANHE_at(he) (he)->at
538 #define ANHE_at_cache(he)
539#endif
291 540
292#if EV_MULTIPLICITY 541#if EV_MULTIPLICITY
293 542
294 struct ev_loop 543 struct ev_loop
295 { 544 {
… …
315 564
316#endif 565#endif
317 566
318/*****************************************************************************/ 567/*****************************************************************************/
319 568
320ev_tstamp noinline 569ev_tstamp
321ev_time (void) 570ev_time (void)
322{ 571{
323#if EV_USE_REALTIME 572#if EV_USE_REALTIME
573 if (expect_true (have_realtime))
574 {
324 struct timespec ts; 575 struct timespec ts;
325 clock_gettime (CLOCK_REALTIME, &ts); 576 clock_gettime (CLOCK_REALTIME, &ts);
326 return ts.tv_sec + ts.tv_nsec * 1e-9; 577 return ts.tv_sec + ts.tv_nsec * 1e-9;
327#else 578 }
579#endif
580
328 struct timeval tv; 581 struct timeval tv;
329 gettimeofday (&tv, 0); 582 gettimeofday (&tv, 0);
330 return tv.tv_sec + tv.tv_usec * 1e-6; 583 return tv.tv_sec + tv.tv_usec * 1e-6;
331#endif
332} 584}
333 585
334ev_tstamp inline_size 586inline_size ev_tstamp
335get_clock (void) 587get_clock (void)
336{ 588{
337#if EV_USE_MONOTONIC 589#if EV_USE_MONOTONIC
338 if (expect_true (have_monotonic)) 590 if (expect_true (have_monotonic))
339 { 591 {
… …
352{ 604{
353 return ev_rt_now; 605 return ev_rt_now;
354} 606}
355#endif 607#endif
356 608
357#define array_roundsize(type,n) (((n) | 4) & ~3) 609void
610ev_sleep (ev_tstamp delay)
611{
612 if (delay > 0.)
613 {
614#if EV_USE_NANOSLEEP
615 struct timespec ts;
616
617 ts.tv_sec = (time_t)delay;
618 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
619
620 nanosleep (&ts, 0);
621#elif defined(_WIN32)
622 Sleep ((unsigned long)(delay * 1e3));
623#else
624 struct timeval tv;
625
626 tv.tv_sec = (time_t)delay;
627 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
628
629 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
630 /* somehting nto guaranteed by newer posix versions, but guaranteed */
631 /* by older ones */
632 select (0, 0, 0, 0, &tv);
633#endif
634 }
635}
636
637/*****************************************************************************/
638
639#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
640
641/* find a suitable new size for the given array, */
642/* hopefully by rounding to a ncie-to-malloc size */
643inline_size int
644array_nextsize (int elem, int cur, int cnt)
645{
646 int ncur = cur + 1;
647
648 do
649 ncur <<= 1;
650 while (cnt > ncur);
651
652 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
653 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
654 {
655 ncur *= elem;
656 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
657 ncur = ncur - sizeof (void *) * 4;
658 ncur /= elem;
659 }
660
661 return ncur;
662}
663
664static noinline void *
665array_realloc (int elem, void *base, int *cur, int cnt)
666{
667 *cur = array_nextsize (elem, *cur, cnt);
668 return ev_realloc (base, elem * *cur);
669}
670
671#define array_init_zero(base,count) \
672 memset ((void *)(base), 0, sizeof (*(base)) * (count))
358 673
359#define array_needsize(type,base,cur,cnt,init) \ 674#define array_needsize(type,base,cur,cnt,init) \
360 if (expect_false ((cnt) > cur)) \ 675 if (expect_false ((cnt) > (cur))) \
361 { \ 676 { \
362 int newcnt = cur; \ 677 int ocur_ = (cur); \
363 do \ 678 (base) = (type *)array_realloc \
364 { \ 679 (sizeof (type), (base), &(cur), (cnt)); \
365 newcnt = array_roundsize (type, newcnt << 1); \ 680 init ((base) + (ocur_), (cur) - ocur_); \
366 } \
367 while ((cnt) > newcnt); \
368 \
369 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
370 init (base + cur, newcnt - cur); \
371 cur = newcnt; \
372 } 681 }
373 682
683#if 0
374#define array_slim(type,stem) \ 684#define array_slim(type,stem) \
375 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 685 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
376 { \ 686 { \
377 stem ## max = array_roundsize (stem ## cnt >> 1); \ 687 stem ## max = array_roundsize (stem ## cnt >> 1); \
378 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 688 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
379 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 689 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
380 } 690 }
691#endif
381 692
382#define array_free(stem, idx) \ 693#define array_free(stem, idx) \
383 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 694 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
384 695
385/*****************************************************************************/ 696/*****************************************************************************/
386 697
387void inline_size 698/* dummy callback for pending events */
388anfds_init (ANFD *base, int count) 699static void noinline
700pendingcb (EV_P_ ev_prepare *w, int revents)
389{ 701{
390 while (count--)
391 {
392 base->head = 0;
393 base->events = EV_NONE;
394 base->reify = 0;
395
396 ++base;
397 }
398} 702}
399 703
400void noinline 704void noinline
401ev_feed_event (EV_P_ void *w, int revents) 705ev_feed_event (EV_P_ void *w, int revents)
402{ 706{
403 W w_ = (W)w; 707 W w_ = (W)w;
708 int pri = ABSPRI (w_);
404 709
405 if (expect_false (w_->pending)) 710 if (expect_false (w_->pending))
711 pendings [pri][w_->pending - 1].events |= revents;
712 else
406 { 713 {
714 w_->pending = ++pendingcnt [pri];
715 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
716 pendings [pri][w_->pending - 1].w = w_;
407 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; 717 pendings [pri][w_->pending - 1].events = revents;
408 return;
409 } 718 }
410
411 w_->pending = ++pendingcnt [ABSPRI (w_)];
412 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
413 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
414 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
415} 719}
416 720
417static void 721inline_speed void
722feed_reverse (EV_P_ W w)
723{
724 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
725 rfeeds [rfeedcnt++] = w;
726}
727
728inline_size void
729feed_reverse_done (EV_P_ int revents)
730{
731 do
732 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
733 while (rfeedcnt);
734}
735
736inline_speed void
418queue_events (EV_P_ W *events, int eventcnt, int type) 737queue_events (EV_P_ W *events, int eventcnt, int type)
419{ 738{
420 int i; 739 int i;
421 740
422 for (i = 0; i < eventcnt; ++i) 741 for (i = 0; i < eventcnt; ++i)
423 ev_feed_event (EV_A_ events [i], type); 742 ev_feed_event (EV_A_ events [i], type);
424} 743}
425 744
426void inline_speed 745/*****************************************************************************/
746
747inline_speed void
427fd_event (EV_P_ int fd, int revents) 748fd_event (EV_P_ int fd, int revents)
428{ 749{
429 ANFD *anfd = anfds + fd; 750 ANFD *anfd = anfds + fd;
430 ev_io *w; 751 ev_io *w;
431 752
… …
439} 760}
440 761
441void 762void
442ev_feed_fd_event (EV_P_ int fd, int revents) 763ev_feed_fd_event (EV_P_ int fd, int revents)
443{ 764{
765 if (fd >= 0 && fd < anfdmax)
444 fd_event (EV_A_ fd, revents); 766 fd_event (EV_A_ fd, revents);
445} 767}
446 768
447/*****************************************************************************/ 769/* make sure the external fd watch events are in-sync */
448 770/* with the kernel/libev internal state */
449void inline_size 771inline_size void
450fd_reify (EV_P) 772fd_reify (EV_P)
451{ 773{
452 int i; 774 int i;
453 775
454 for (i = 0; i < fdchangecnt; ++i) 776 for (i = 0; i < fdchangecnt; ++i)
455 { 777 {
456 int fd = fdchanges [i]; 778 int fd = fdchanges [i];
457 ANFD *anfd = anfds + fd; 779 ANFD *anfd = anfds + fd;
458 ev_io *w; 780 ev_io *w;
459 781
460 int events = 0; 782 unsigned char events = 0;
461 783
462 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 784 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
463 events |= w->events; 785 events |= (unsigned char)w->events;
464 786
465#if EV_SELECT_IS_WINSOCKET 787#if EV_SELECT_IS_WINSOCKET
466 if (events) 788 if (events)
467 { 789 {
468 unsigned long argp; 790 unsigned long arg;
791 #ifdef EV_FD_TO_WIN32_HANDLE
792 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
793 #else
469 anfd->handle = _get_osfhandle (fd); 794 anfd->handle = _get_osfhandle (fd);
795 #endif
470 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 796 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
471 } 797 }
472#endif 798#endif
473 799
800 {
801 unsigned char o_events = anfd->events;
802 unsigned char o_reify = anfd->reify;
803
474 anfd->reify = 0; 804 anfd->reify = 0;
475
476 backend_modify (EV_A_ fd, anfd->events, events);
477 anfd->events = events; 805 anfd->events = events;
806
807 if (o_events != events || o_reify & EV__IOFDSET)
808 backend_modify (EV_A_ fd, o_events, events);
809 }
478 } 810 }
479 811
480 fdchangecnt = 0; 812 fdchangecnt = 0;
481} 813}
482 814
483void inline_size 815/* something about the given fd changed */
816inline_size void
484fd_change (EV_P_ int fd) 817fd_change (EV_P_ int fd, int flags)
485{ 818{
486 if (expect_false (anfds [fd].reify)) 819 unsigned char reify = anfds [fd].reify;
487 return;
488
489 anfds [fd].reify = 1; 820 anfds [fd].reify |= flags;
490 821
822 if (expect_true (!reify))
823 {
491 ++fdchangecnt; 824 ++fdchangecnt;
492 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 825 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
493 fdchanges [fdchangecnt - 1] = fd; 826 fdchanges [fdchangecnt - 1] = fd;
827 }
494} 828}
495 829
496void inline_speed 830/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
831inline_speed void
497fd_kill (EV_P_ int fd) 832fd_kill (EV_P_ int fd)
498{ 833{
499 ev_io *w; 834 ev_io *w;
500 835
501 while ((w = (ev_io *)anfds [fd].head)) 836 while ((w = (ev_io *)anfds [fd].head))
… …
503 ev_io_stop (EV_A_ w); 838 ev_io_stop (EV_A_ w);
504 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 839 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
505 } 840 }
506} 841}
507 842
508int inline_size 843/* check whether the given fd is atcually valid, for error recovery */
844inline_size int
509fd_valid (int fd) 845fd_valid (int fd)
510{ 846{
511#ifdef _WIN32 847#ifdef _WIN32
512 return _get_osfhandle (fd) != -1; 848 return _get_osfhandle (fd) != -1;
513#else 849#else
… …
521{ 857{
522 int fd; 858 int fd;
523 859
524 for (fd = 0; fd < anfdmax; ++fd) 860 for (fd = 0; fd < anfdmax; ++fd)
525 if (anfds [fd].events) 861 if (anfds [fd].events)
526 if (!fd_valid (fd) == -1 && errno == EBADF) 862 if (!fd_valid (fd) && errno == EBADF)
527 fd_kill (EV_A_ fd); 863 fd_kill (EV_A_ fd);
528} 864}
529 865
530/* called on ENOMEM in select/poll to kill some fds and retry */ 866/* called on ENOMEM in select/poll to kill some fds and retry */
531static void noinline 867static void noinline
… …
545static void noinline 881static void noinline
546fd_rearm_all (EV_P) 882fd_rearm_all (EV_P)
547{ 883{
548 int fd; 884 int fd;
549 885
550 /* this should be highly optimised to not do anything but set a flag */
551 for (fd = 0; fd < anfdmax; ++fd) 886 for (fd = 0; fd < anfdmax; ++fd)
552 if (anfds [fd].events) 887 if (anfds [fd].events)
553 { 888 {
554 anfds [fd].events = 0; 889 anfds [fd].events = 0;
890 anfds [fd].emask = 0;
555 fd_change (EV_A_ fd); 891 fd_change (EV_A_ fd, EV__IOFDSET | 1);
556 } 892 }
557} 893}
558 894
559/*****************************************************************************/ 895/*****************************************************************************/
560 896
561void inline_speed 897/*
562upheap (WT *heap, int k) 898 * the heap functions want a real array index. array index 0 uis guaranteed to not
563{ 899 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
564 WT w = heap [k]; 900 * the branching factor of the d-tree.
901 */
565 902
566 while (k && heap [k >> 1]->at > w->at) 903/*
567 { 904 * at the moment we allow libev the luxury of two heaps,
568 heap [k] = heap [k >> 1]; 905 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
569 ((W)heap [k])->active = k + 1; 906 * which is more cache-efficient.
570 k >>= 1; 907 * the difference is about 5% with 50000+ watchers.
571 } 908 */
909#if EV_USE_4HEAP
572 910
573 heap [k] = w; 911#define DHEAP 4
574 ((W)heap [k])->active = k + 1; 912#define HEAP0 (DHEAP - 1) /* index of first element in heap */
913#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
914#define UPHEAP_DONE(p,k) ((p) == (k))
575 915
576} 916/* away from the root */
577 917inline_speed void
578void inline_speed
579downheap (WT *heap, int N, int k) 918downheap (ANHE *heap, int N, int k)
580{ 919{
581 WT w = heap [k]; 920 ANHE he = heap [k];
921 ANHE *E = heap + N + HEAP0;
582 922
583 while (k < (N >> 1)) 923 for (;;)
584 { 924 {
585 int j = k << 1; 925 ev_tstamp minat;
926 ANHE *minpos;
927 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
586 928
587 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 929 /* find minimum child */
930 if (expect_true (pos + DHEAP - 1 < E))
588 ++j; 931 {
589 932 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
590 if (w->at <= heap [j]->at) 933 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
934 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
935 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
936 }
937 else if (pos < E)
938 {
939 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
940 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
941 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
942 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
943 }
944 else
591 break; 945 break;
592 946
947 if (ANHE_at (he) <= minat)
948 break;
949
950 heap [k] = *minpos;
951 ev_active (ANHE_w (*minpos)) = k;
952
953 k = minpos - heap;
954 }
955
956 heap [k] = he;
957 ev_active (ANHE_w (he)) = k;
958}
959
960#else /* 4HEAP */
961
962#define HEAP0 1
963#define HPARENT(k) ((k) >> 1)
964#define UPHEAP_DONE(p,k) (!(p))
965
966/* away from the root */
967inline_speed void
968downheap (ANHE *heap, int N, int k)
969{
970 ANHE he = heap [k];
971
972 for (;;)
973 {
974 int c = k << 1;
975
976 if (c > N + HEAP0 - 1)
977 break;
978
979 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
980 ? 1 : 0;
981
982 if (ANHE_at (he) <= ANHE_at (heap [c]))
983 break;
984
593 heap [k] = heap [j]; 985 heap [k] = heap [c];
594 ((W)heap [k])->active = k + 1; 986 ev_active (ANHE_w (heap [k])) = k;
987
595 k = j; 988 k = c;
596 } 989 }
597 990
598 heap [k] = w; 991 heap [k] = he;
599 ((W)heap [k])->active = k + 1; 992 ev_active (ANHE_w (he)) = k;
600} 993}
994#endif
601 995
602void inline_size 996/* towards the root */
997inline_speed void
998upheap (ANHE *heap, int k)
999{
1000 ANHE he = heap [k];
1001
1002 for (;;)
1003 {
1004 int p = HPARENT (k);
1005
1006 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1007 break;
1008
1009 heap [k] = heap [p];
1010 ev_active (ANHE_w (heap [k])) = k;
1011 k = p;
1012 }
1013
1014 heap [k] = he;
1015 ev_active (ANHE_w (he)) = k;
1016}
1017
1018/* move an element suitably so it is in a correct place */
1019inline_size void
603adjustheap (WT *heap, int N, int k) 1020adjustheap (ANHE *heap, int N, int k)
604{ 1021{
1022 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
605 upheap (heap, k); 1023 upheap (heap, k);
1024 else
606 downheap (heap, N, k); 1025 downheap (heap, N, k);
1026}
1027
1028/* rebuild the heap: this function is used only once and executed rarely */
1029inline_size void
1030reheap (ANHE *heap, int N)
1031{
1032 int i;
1033
1034 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1035 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1036 for (i = 0; i < N; ++i)
1037 upheap (heap, i + HEAP0);
607} 1038}
608 1039
609/*****************************************************************************/ 1040/*****************************************************************************/
610 1041
1042/* associate signal watchers to a signal signal */
611typedef struct 1043typedef struct
612{ 1044{
613 WL head; 1045 WL head;
614 sig_atomic_t volatile gotsig; 1046 EV_ATOMIC_T gotsig;
615} ANSIG; 1047} ANSIG;
616 1048
617static ANSIG *signals; 1049static ANSIG *signals;
618static int signalmax; 1050static int signalmax;
619 1051
620static int sigpipe [2]; 1052static EV_ATOMIC_T gotsig;
621static sig_atomic_t volatile gotsig;
622static ev_io sigev;
623 1053
624void inline_size 1054/*****************************************************************************/
625signals_init (ANSIG *base, int count)
626{
627 while (count--)
628 {
629 base->head = 0;
630 base->gotsig = 0;
631 1055
632 ++base; 1056/* used to prepare libev internal fd's */
633 } 1057/* this is not fork-safe */
634} 1058inline_speed void
635
636static void
637sighandler (int signum)
638{
639#if _WIN32
640 signal (signum, sighandler);
641#endif
642
643 signals [signum - 1].gotsig = 1;
644
645 if (!gotsig)
646 {
647 int old_errno = errno;
648 gotsig = 1;
649 write (sigpipe [1], &signum, 1);
650 errno = old_errno;
651 }
652}
653
654void noinline
655ev_feed_signal_event (EV_P_ int signum)
656{
657 WL w;
658
659#if EV_MULTIPLICITY
660 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
661#endif
662
663 --signum;
664
665 if (signum < 0 || signum >= signalmax)
666 return;
667
668 signals [signum].gotsig = 0;
669
670 for (w = signals [signum].head; w; w = w->next)
671 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
672}
673
674static void
675sigcb (EV_P_ ev_io *iow, int revents)
676{
677 int signum;
678
679 read (sigpipe [0], &revents, 1);
680 gotsig = 0;
681
682 for (signum = signalmax; signum--; )
683 if (signals [signum].gotsig)
684 ev_feed_signal_event (EV_A_ signum + 1);
685}
686
687void inline_size
688fd_intern (int fd) 1059fd_intern (int fd)
689{ 1060{
690#ifdef _WIN32 1061#ifdef _WIN32
691 int arg = 1; 1062 unsigned long arg = 1;
692 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1063 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
693#else 1064#else
694 fcntl (fd, F_SETFD, FD_CLOEXEC); 1065 fcntl (fd, F_SETFD, FD_CLOEXEC);
695 fcntl (fd, F_SETFL, O_NONBLOCK); 1066 fcntl (fd, F_SETFL, O_NONBLOCK);
696#endif 1067#endif
697} 1068}
698 1069
699static void noinline 1070static void noinline
700siginit (EV_P) 1071evpipe_init (EV_P)
701{ 1072{
1073 if (!ev_is_active (&pipe_w))
1074 {
1075#if EV_USE_EVENTFD
1076 if ((evfd = eventfd (0, 0)) >= 0)
1077 {
1078 evpipe [0] = -1;
1079 fd_intern (evfd);
1080 ev_io_set (&pipe_w, evfd, EV_READ);
1081 }
1082 else
1083#endif
1084 {
1085 while (pipe (evpipe))
1086 ev_syserr ("(libev) error creating signal/async pipe");
1087
702 fd_intern (sigpipe [0]); 1088 fd_intern (evpipe [0]);
703 fd_intern (sigpipe [1]); 1089 fd_intern (evpipe [1]);
1090 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1091 }
704 1092
705 ev_io_set (&sigev, sigpipe [0], EV_READ);
706 ev_io_start (EV_A_ &sigev); 1093 ev_io_start (EV_A_ &pipe_w);
707 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1094 ev_unref (EV_A); /* watcher should not keep loop alive */
1095 }
1096}
1097
1098inline_size void
1099evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1100{
1101 if (!*flag)
1102 {
1103 int old_errno = errno; /* save errno because write might clobber it */
1104
1105 *flag = 1;
1106
1107#if EV_USE_EVENTFD
1108 if (evfd >= 0)
1109 {
1110 uint64_t counter = 1;
1111 write (evfd, &counter, sizeof (uint64_t));
1112 }
1113 else
1114#endif
1115 write (evpipe [1], &old_errno, 1);
1116
1117 errno = old_errno;
1118 }
1119}
1120
1121/* called whenever the libev signal pipe */
1122/* got some events (signal, async) */
1123static void
1124pipecb (EV_P_ ev_io *iow, int revents)
1125{
1126#if EV_USE_EVENTFD
1127 if (evfd >= 0)
1128 {
1129 uint64_t counter;
1130 read (evfd, &counter, sizeof (uint64_t));
1131 }
1132 else
1133#endif
1134 {
1135 char dummy;
1136 read (evpipe [0], &dummy, 1);
1137 }
1138
1139 if (gotsig && ev_is_default_loop (EV_A))
1140 {
1141 int signum;
1142 gotsig = 0;
1143
1144 for (signum = signalmax; signum--; )
1145 if (signals [signum].gotsig)
1146 ev_feed_signal_event (EV_A_ signum + 1);
1147 }
1148
1149#if EV_ASYNC_ENABLE
1150 if (gotasync)
1151 {
1152 int i;
1153 gotasync = 0;
1154
1155 for (i = asynccnt; i--; )
1156 if (asyncs [i]->sent)
1157 {
1158 asyncs [i]->sent = 0;
1159 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1160 }
1161 }
1162#endif
708} 1163}
709 1164
710/*****************************************************************************/ 1165/*****************************************************************************/
711 1166
1167static void
1168ev_sighandler (int signum)
1169{
1170#if EV_MULTIPLICITY
1171 struct ev_loop *loop = &default_loop_struct;
1172#endif
1173
1174#if _WIN32
1175 signal (signum, ev_sighandler);
1176#endif
1177
1178 signals [signum - 1].gotsig = 1;
1179 evpipe_write (EV_A_ &gotsig);
1180}
1181
1182void noinline
1183ev_feed_signal_event (EV_P_ int signum)
1184{
1185 WL w;
1186
1187#if EV_MULTIPLICITY
1188 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1189#endif
1190
1191 --signum;
1192
1193 if (signum < 0 || signum >= signalmax)
1194 return;
1195
1196 signals [signum].gotsig = 0;
1197
1198 for (w = signals [signum].head; w; w = w->next)
1199 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1200}
1201
1202/*****************************************************************************/
1203
712static ev_child *childs [PID_HASHSIZE]; 1204static WL childs [EV_PID_HASHSIZE];
713 1205
714#ifndef _WIN32 1206#ifndef _WIN32
715 1207
716static ev_signal childev; 1208static ev_signal childev;
1209
1210#ifndef WIFCONTINUED
1211# define WIFCONTINUED(status) 0
1212#endif
1213
1214/* handle a single child status event */
1215inline_speed void
1216child_reap (EV_P_ int chain, int pid, int status)
1217{
1218 ev_child *w;
1219 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1220
1221 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1222 {
1223 if ((w->pid == pid || !w->pid)
1224 && (!traced || (w->flags & 1)))
1225 {
1226 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
1227 w->rpid = pid;
1228 w->rstatus = status;
1229 ev_feed_event (EV_A_ (W)w, EV_CHILD);
1230 }
1231 }
1232}
717 1233
718#ifndef WCONTINUED 1234#ifndef WCONTINUED
719# define WCONTINUED 0 1235# define WCONTINUED 0
720#endif 1236#endif
721 1237
722void inline_speed 1238/* called on sigchld etc., calls waitpid */
723child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
724{
725 ev_child *w;
726
727 for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
728 if (w->pid == pid || !w->pid)
729 {
730 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
731 w->rpid = pid;
732 w->rstatus = status;
733 ev_feed_event (EV_A_ (W)w, EV_CHILD);
734 }
735}
736
737static void 1239static void
738childcb (EV_P_ ev_signal *sw, int revents) 1240childcb (EV_P_ ev_signal *sw, int revents)
739{ 1241{
740 int pid, status; 1242 int pid, status;
741 1243
1244 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
742 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 1245 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
743 { 1246 if (!WCONTINUED
1247 || errno != EINVAL
1248 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
1249 return;
1250
744 /* make sure we are called again until all childs have been reaped */ 1251 /* make sure we are called again until all children have been reaped */
745 /* we need to do it this way so that the callback gets called before we continue */ 1252 /* we need to do it this way so that the callback gets called before we continue */
746 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1253 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
747 1254
748 child_reap (EV_A_ sw, pid, pid, status); 1255 child_reap (EV_A_ pid, pid, status);
1256 if (EV_PID_HASHSIZE > 1)
749 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1257 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
750 }
751} 1258}
752 1259
753#endif 1260#endif
754 1261
755/*****************************************************************************/ 1262/*****************************************************************************/
… …
817 /* kqueue is borked on everything but netbsd apparently */ 1324 /* kqueue is borked on everything but netbsd apparently */
818 /* it usually doesn't work correctly on anything but sockets and pipes */ 1325 /* it usually doesn't work correctly on anything but sockets and pipes */
819 flags &= ~EVBACKEND_KQUEUE; 1326 flags &= ~EVBACKEND_KQUEUE;
820#endif 1327#endif
821#ifdef __APPLE__ 1328#ifdef __APPLE__
822 // flags &= ~EVBACKEND_KQUEUE; for documentation 1329 /* only select works correctly on that "unix-certified" platform */
823 flags &= ~EVBACKEND_POLL; 1330 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1331 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
824#endif 1332#endif
825 1333
826 return flags; 1334 return flags;
827} 1335}
828 1336
829unsigned int 1337unsigned int
830ev_embeddable_backends (void) 1338ev_embeddable_backends (void)
831{ 1339{
832 return EVBACKEND_EPOLL 1340 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
833 | EVBACKEND_KQUEUE 1341
834 | EVBACKEND_PORT; 1342 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1343 /* please fix it and tell me how to detect the fix */
1344 flags &= ~EVBACKEND_EPOLL;
1345
1346 return flags;
835} 1347}
836 1348
837unsigned int 1349unsigned int
838ev_backend (EV_P) 1350ev_backend (EV_P)
839{ 1351{
840 return backend; 1352 return backend;
841} 1353}
842 1354
843static void 1355unsigned int
1356ev_loop_count (EV_P)
1357{
1358 return loop_count;
1359}
1360
1361void
1362ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1363{
1364 io_blocktime = interval;
1365}
1366
1367void
1368ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1369{
1370 timeout_blocktime = interval;
1371}
1372
1373/* initialise a loop structure, must be zero-initialised */
1374static void noinline
844loop_init (EV_P_ unsigned int flags) 1375loop_init (EV_P_ unsigned int flags)
845{ 1376{
846 if (!backend) 1377 if (!backend)
847 { 1378 {
1379#if EV_USE_REALTIME
1380 if (!have_realtime)
1381 {
1382 struct timespec ts;
1383
1384 if (!clock_gettime (CLOCK_REALTIME, &ts))
1385 have_realtime = 1;
1386 }
1387#endif
1388
848#if EV_USE_MONOTONIC 1389#if EV_USE_MONOTONIC
1390 if (!have_monotonic)
849 { 1391 {
850 struct timespec ts; 1392 struct timespec ts;
1393
851 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1394 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
852 have_monotonic = 1; 1395 have_monotonic = 1;
853 } 1396 }
854#endif 1397#endif
855 1398
856 ev_rt_now = ev_time (); 1399 ev_rt_now = ev_time ();
857 mn_now = get_clock (); 1400 mn_now = get_clock ();
858 now_floor = mn_now; 1401 now_floor = mn_now;
859 rtmn_diff = ev_rt_now - mn_now; 1402 rtmn_diff = ev_rt_now - mn_now;
1403
1404 io_blocktime = 0.;
1405 timeout_blocktime = 0.;
1406 backend = 0;
1407 backend_fd = -1;
1408 gotasync = 0;
1409#if EV_USE_INOTIFY
1410 fs_fd = -2;
1411#endif
1412
1413 /* pid check not overridable via env */
1414#ifndef _WIN32
1415 if (flags & EVFLAG_FORKCHECK)
1416 curpid = getpid ();
1417#endif
860 1418
861 if (!(flags & EVFLAG_NOENV) 1419 if (!(flags & EVFLAG_NOENV)
862 && !enable_secure () 1420 && !enable_secure ()
863 && getenv ("LIBEV_FLAGS")) 1421 && getenv ("LIBEV_FLAGS"))
864 flags = atoi (getenv ("LIBEV_FLAGS")); 1422 flags = atoi (getenv ("LIBEV_FLAGS"));
865 1423
866 if (!(flags & 0x0000ffffUL)) 1424 if (!(flags & 0x0000ffffU))
867 flags |= ev_recommended_backends (); 1425 flags |= ev_recommended_backends ();
868 1426
869 backend = 0;
870#if EV_USE_PORT 1427#if EV_USE_PORT
871 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1428 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
872#endif 1429#endif
873#if EV_USE_KQUEUE 1430#if EV_USE_KQUEUE
874 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1431 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
881#endif 1438#endif
882#if EV_USE_SELECT 1439#if EV_USE_SELECT
883 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1440 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
884#endif 1441#endif
885 1442
1443 ev_prepare_init (&pending_w, pendingcb);
1444
886 ev_init (&sigev, sigcb); 1445 ev_init (&pipe_w, pipecb);
887 ev_set_priority (&sigev, EV_MAXPRI); 1446 ev_set_priority (&pipe_w, EV_MAXPRI);
888 } 1447 }
889} 1448}
890 1449
891static void 1450/* free up a loop structure */
1451static void noinline
892loop_destroy (EV_P) 1452loop_destroy (EV_P)
893{ 1453{
894 int i; 1454 int i;
1455
1456 if (ev_is_active (&pipe_w))
1457 {
1458 ev_ref (EV_A); /* signal watcher */
1459 ev_io_stop (EV_A_ &pipe_w);
1460
1461#if EV_USE_EVENTFD
1462 if (evfd >= 0)
1463 close (evfd);
1464#endif
1465
1466 if (evpipe [0] >= 0)
1467 {
1468 close (evpipe [0]);
1469 close (evpipe [1]);
1470 }
1471 }
1472
1473#if EV_USE_INOTIFY
1474 if (fs_fd >= 0)
1475 close (fs_fd);
1476#endif
1477
1478 if (backend_fd >= 0)
1479 close (backend_fd);
895 1480
896#if EV_USE_PORT 1481#if EV_USE_PORT
897 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1482 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
898#endif 1483#endif
899#if EV_USE_KQUEUE 1484#if EV_USE_KQUEUE
… …
908#if EV_USE_SELECT 1493#if EV_USE_SELECT
909 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 1494 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
910#endif 1495#endif
911 1496
912 for (i = NUMPRI; i--; ) 1497 for (i = NUMPRI; i--; )
1498 {
913 array_free (pending, [i]); 1499 array_free (pending, [i]);
1500#if EV_IDLE_ENABLE
1501 array_free (idle, [i]);
1502#endif
1503 }
1504
1505 ev_free (anfds); anfdmax = 0;
914 1506
915 /* have to use the microsoft-never-gets-it-right macro */ 1507 /* have to use the microsoft-never-gets-it-right macro */
1508 array_free (rfeed, EMPTY);
916 array_free (fdchange, EMPTY0); 1509 array_free (fdchange, EMPTY);
917 array_free (timer, EMPTY0); 1510 array_free (timer, EMPTY);
918#if EV_PERIODIC_ENABLE 1511#if EV_PERIODIC_ENABLE
919 array_free (periodic, EMPTY0); 1512 array_free (periodic, EMPTY);
920#endif 1513#endif
1514#if EV_FORK_ENABLE
921 array_free (idle, EMPTY0); 1515 array_free (fork, EMPTY);
1516#endif
922 array_free (prepare, EMPTY0); 1517 array_free (prepare, EMPTY);
923 array_free (check, EMPTY0); 1518 array_free (check, EMPTY);
1519#if EV_ASYNC_ENABLE
1520 array_free (async, EMPTY);
1521#endif
924 1522
925 backend = 0; 1523 backend = 0;
926} 1524}
927 1525
928static void 1526#if EV_USE_INOTIFY
1527inline_size void infy_fork (EV_P);
1528#endif
1529
1530inline_size void
929loop_fork (EV_P) 1531loop_fork (EV_P)
930{ 1532{
931#if EV_USE_PORT 1533#if EV_USE_PORT
932 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1534 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
933#endif 1535#endif
… …
935 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 1537 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
936#endif 1538#endif
937#if EV_USE_EPOLL 1539#if EV_USE_EPOLL
938 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 1540 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
939#endif 1541#endif
1542#if EV_USE_INOTIFY
1543 infy_fork (EV_A);
1544#endif
940 1545
941 if (ev_is_active (&sigev)) 1546 if (ev_is_active (&pipe_w))
942 { 1547 {
943 /* default loop */ 1548 /* this "locks" the handlers against writing to the pipe */
1549 /* while we modify the fd vars */
1550 gotsig = 1;
1551#if EV_ASYNC_ENABLE
1552 gotasync = 1;
1553#endif
944 1554
945 ev_ref (EV_A); 1555 ev_ref (EV_A);
946 ev_io_stop (EV_A_ &sigev); 1556 ev_io_stop (EV_A_ &pipe_w);
1557
1558#if EV_USE_EVENTFD
1559 if (evfd >= 0)
1560 close (evfd);
1561#endif
1562
1563 if (evpipe [0] >= 0)
1564 {
947 close (sigpipe [0]); 1565 close (evpipe [0]);
948 close (sigpipe [1]); 1566 close (evpipe [1]);
1567 }
949 1568
950 while (pipe (sigpipe))
951 syserr ("(libev) error creating pipe");
952
953 siginit (EV_A); 1569 evpipe_init (EV_A);
1570 /* now iterate over everything, in case we missed something */
1571 pipecb (EV_A_ &pipe_w, EV_READ);
954 } 1572 }
955 1573
956 postfork = 0; 1574 postfork = 0;
957} 1575}
958 1576
959#if EV_MULTIPLICITY 1577#if EV_MULTIPLICITY
1578
960struct ev_loop * 1579struct ev_loop *
961ev_loop_new (unsigned int flags) 1580ev_loop_new (unsigned int flags)
962{ 1581{
963 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1582 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
964 1583
… …
980} 1599}
981 1600
982void 1601void
983ev_loop_fork (EV_P) 1602ev_loop_fork (EV_P)
984{ 1603{
985 postfork = 1; 1604 postfork = 1; /* must be in line with ev_default_fork */
986} 1605}
987 1606
1607#if EV_VERIFY
1608static void noinline
1609verify_watcher (EV_P_ W w)
1610{
1611 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1612
1613 if (w->pending)
1614 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1615}
1616
1617static void noinline
1618verify_heap (EV_P_ ANHE *heap, int N)
1619{
1620 int i;
1621
1622 for (i = HEAP0; i < N + HEAP0; ++i)
1623 {
1624 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1625 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1626 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1627
1628 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1629 }
1630}
1631
1632static void noinline
1633array_verify (EV_P_ W *ws, int cnt)
1634{
1635 while (cnt--)
1636 {
1637 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1638 verify_watcher (EV_A_ ws [cnt]);
1639 }
1640}
1641#endif
1642
1643void
1644ev_loop_verify (EV_P)
1645{
1646#if EV_VERIFY
1647 int i;
1648 WL w;
1649
1650 assert (activecnt >= -1);
1651
1652 assert (fdchangemax >= fdchangecnt);
1653 for (i = 0; i < fdchangecnt; ++i)
1654 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1655
1656 assert (anfdmax >= 0);
1657 for (i = 0; i < anfdmax; ++i)
1658 for (w = anfds [i].head; w; w = w->next)
1659 {
1660 verify_watcher (EV_A_ (W)w);
1661 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1662 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1663 }
1664
1665 assert (timermax >= timercnt);
1666 verify_heap (EV_A_ timers, timercnt);
1667
1668#if EV_PERIODIC_ENABLE
1669 assert (periodicmax >= periodiccnt);
1670 verify_heap (EV_A_ periodics, periodiccnt);
1671#endif
1672
1673 for (i = NUMPRI; i--; )
1674 {
1675 assert (pendingmax [i] >= pendingcnt [i]);
1676#if EV_IDLE_ENABLE
1677 assert (idleall >= 0);
1678 assert (idlemax [i] >= idlecnt [i]);
1679 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1680#endif
1681 }
1682
1683#if EV_FORK_ENABLE
1684 assert (forkmax >= forkcnt);
1685 array_verify (EV_A_ (W *)forks, forkcnt);
1686#endif
1687
1688#if EV_ASYNC_ENABLE
1689 assert (asyncmax >= asynccnt);
1690 array_verify (EV_A_ (W *)asyncs, asynccnt);
1691#endif
1692
1693 assert (preparemax >= preparecnt);
1694 array_verify (EV_A_ (W *)prepares, preparecnt);
1695
1696 assert (checkmax >= checkcnt);
1697 array_verify (EV_A_ (W *)checks, checkcnt);
1698
1699# if 0
1700 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1701 for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
988#endif 1702# endif
1703#endif
1704}
1705
1706#endif /* multiplicity */
989 1707
990#if EV_MULTIPLICITY 1708#if EV_MULTIPLICITY
991struct ev_loop * 1709struct ev_loop *
992ev_default_loop_init (unsigned int flags) 1710ev_default_loop_init (unsigned int flags)
993#else 1711#else
994int 1712int
995ev_default_loop (unsigned int flags) 1713ev_default_loop (unsigned int flags)
996#endif 1714#endif
997{ 1715{
998 if (sigpipe [0] == sigpipe [1])
999 if (pipe (sigpipe))
1000 return 0;
1001
1002 if (!ev_default_loop_ptr) 1716 if (!ev_default_loop_ptr)
1003 { 1717 {
1004#if EV_MULTIPLICITY 1718#if EV_MULTIPLICITY
1005 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1719 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1006#else 1720#else
… …
1009 1723
1010 loop_init (EV_A_ flags); 1724 loop_init (EV_A_ flags);
1011 1725
1012 if (ev_backend (EV_A)) 1726 if (ev_backend (EV_A))
1013 { 1727 {
1014 siginit (EV_A);
1015
1016#ifndef _WIN32 1728#ifndef _WIN32
1017 ev_signal_init (&childev, childcb, SIGCHLD); 1729 ev_signal_init (&childev, childcb, SIGCHLD);
1018 ev_set_priority (&childev, EV_MAXPRI); 1730 ev_set_priority (&childev, EV_MAXPRI);
1019 ev_signal_start (EV_A_ &childev); 1731 ev_signal_start (EV_A_ &childev);
1020 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1732 ev_unref (EV_A); /* child watcher should not keep loop alive */
… …
1032{ 1744{
1033#if EV_MULTIPLICITY 1745#if EV_MULTIPLICITY
1034 struct ev_loop *loop = ev_default_loop_ptr; 1746 struct ev_loop *loop = ev_default_loop_ptr;
1035#endif 1747#endif
1036 1748
1749 ev_default_loop_ptr = 0;
1750
1037#ifndef _WIN32 1751#ifndef _WIN32
1038 ev_ref (EV_A); /* child watcher */ 1752 ev_ref (EV_A); /* child watcher */
1039 ev_signal_stop (EV_A_ &childev); 1753 ev_signal_stop (EV_A_ &childev);
1040#endif 1754#endif
1041 1755
1042 ev_ref (EV_A); /* signal watcher */
1043 ev_io_stop (EV_A_ &sigev);
1044
1045 close (sigpipe [0]); sigpipe [0] = 0;
1046 close (sigpipe [1]); sigpipe [1] = 0;
1047
1048 loop_destroy (EV_A); 1756 loop_destroy (EV_A);
1049} 1757}
1050 1758
1051void 1759void
1052ev_default_fork (void) 1760ev_default_fork (void)
1053{ 1761{
1054#if EV_MULTIPLICITY 1762#if EV_MULTIPLICITY
1055 struct ev_loop *loop = ev_default_loop_ptr; 1763 struct ev_loop *loop = ev_default_loop_ptr;
1056#endif 1764#endif
1057 1765
1058 if (backend) 1766 postfork = 1; /* must be in line with ev_loop_fork */
1059 postfork = 1;
1060} 1767}
1061 1768
1062/*****************************************************************************/ 1769/*****************************************************************************/
1063 1770
1064int inline_size 1771void
1065any_pending (EV_P) 1772ev_invoke (EV_P_ void *w, int revents)
1066{ 1773{
1067 int pri; 1774 EV_CB_INVOKE ((W)w, revents);
1068
1069 for (pri = NUMPRI; pri--; )
1070 if (pendingcnt [pri])
1071 return 1;
1072
1073 return 0;
1074} 1775}
1075 1776
1076void inline_speed 1777inline_speed void
1077call_pending (EV_P) 1778call_pending (EV_P)
1078{ 1779{
1079 int pri; 1780 int pri;
1080 1781
1081 for (pri = NUMPRI; pri--; ) 1782 for (pri = NUMPRI; pri--; )
1082 while (pendingcnt [pri]) 1783 while (pendingcnt [pri])
1083 { 1784 {
1084 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1785 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1085 1786
1086 if (expect_true (p->w))
1087 {
1088 assert (("non-pending watcher on pending list", p->w->pending)); 1787 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1788 /* ^ this is no longer true, as pending_w could be here */
1089 1789
1090 p->w->pending = 0; 1790 p->w->pending = 0;
1091 EV_CB_INVOKE (p->w, p->events); 1791 EV_CB_INVOKE (p->w, p->events);
1092 } 1792 EV_FREQUENT_CHECK;
1093 } 1793 }
1094} 1794}
1095 1795
1096void inline_size 1796#if EV_IDLE_ENABLE
1797/* make idle watchers pending. this handles the "call-idle */
1798/* only when higher priorities are idle" logic */
1799inline_size void
1800idle_reify (EV_P)
1801{
1802 if (expect_false (idleall))
1803 {
1804 int pri;
1805
1806 for (pri = NUMPRI; pri--; )
1807 {
1808 if (pendingcnt [pri])
1809 break;
1810
1811 if (idlecnt [pri])
1812 {
1813 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1814 break;
1815 }
1816 }
1817 }
1818}
1819#endif
1820
1821/* make timers pending */
1822inline_size void
1097timers_reify (EV_P) 1823timers_reify (EV_P)
1098{ 1824{
1825 EV_FREQUENT_CHECK;
1826
1099 while (timercnt && ((WT)timers [0])->at <= mn_now) 1827 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1100 { 1828 {
1101 ev_timer *w = timers [0]; 1829 do
1102
1103 assert (("inactive timer on timer heap detected", ev_is_active (w)));
1104
1105 /* first reschedule or stop timer */
1106 if (w->repeat)
1107 { 1830 {
1831 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
1832
1833 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
1834
1835 /* first reschedule or stop timer */
1836 if (w->repeat)
1837 {
1838 ev_at (w) += w->repeat;
1839 if (ev_at (w) < mn_now)
1840 ev_at (w) = mn_now;
1841
1108 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1842 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1109 1843
1110 ((WT)w)->at += w->repeat; 1844 ANHE_at_cache (timers [HEAP0]);
1111 if (((WT)w)->at < mn_now)
1112 ((WT)w)->at = mn_now;
1113
1114 downheap ((WT *)timers, timercnt, 0); 1845 downheap (timers, timercnt, HEAP0);
1846 }
1847 else
1848 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1849
1850 EV_FREQUENT_CHECK;
1851 feed_reverse (EV_A_ (W)w);
1115 } 1852 }
1116 else 1853 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1117 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1118 1854
1119 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1855 feed_reverse_done (EV_A_ EV_TIMEOUT);
1120 } 1856 }
1121} 1857}
1122 1858
1123#if EV_PERIODIC_ENABLE 1859#if EV_PERIODIC_ENABLE
1124void inline_size 1860/* make periodics pending */
1861inline_size void
1125periodics_reify (EV_P) 1862periodics_reify (EV_P)
1126{ 1863{
1864 EV_FREQUENT_CHECK;
1865
1127 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1866 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1128 { 1867 {
1129 ev_periodic *w = periodics [0]; 1868 int feed_count = 0;
1130 1869
1131 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1870 do
1132
1133 /* first reschedule or stop timer */
1134 if (w->reschedule_cb)
1135 { 1871 {
1872 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1873
1874 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
1875
1876 /* first reschedule or stop timer */
1877 if (w->reschedule_cb)
1878 {
1136 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1879 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1880
1137 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1881 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1882
1883 ANHE_at_cache (periodics [HEAP0]);
1138 downheap ((WT *)periodics, periodiccnt, 0); 1884 downheap (periodics, periodiccnt, HEAP0);
1885 }
1886 else if (w->interval)
1887 {
1888 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1889 /* if next trigger time is not sufficiently in the future, put it there */
1890 /* this might happen because of floating point inexactness */
1891 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1892 {
1893 ev_at (w) += w->interval;
1894
1895 /* if interval is unreasonably low we might still have a time in the past */
1896 /* so correct this. this will make the periodic very inexact, but the user */
1897 /* has effectively asked to get triggered more often than possible */
1898 if (ev_at (w) < ev_rt_now)
1899 ev_at (w) = ev_rt_now;
1900 }
1901
1902 ANHE_at_cache (periodics [HEAP0]);
1903 downheap (periodics, periodiccnt, HEAP0);
1904 }
1905 else
1906 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1907
1908 EV_FREQUENT_CHECK;
1909 feed_reverse (EV_A_ (W)w);
1139 } 1910 }
1140 else if (w->interval) 1911 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1141 {
1142 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
1143 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1144 downheap ((WT *)periodics, periodiccnt, 0);
1145 }
1146 else
1147 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1148 1912
1149 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1913 feed_reverse_done (EV_A_ EV_PERIODIC);
1150 } 1914 }
1151} 1915}
1152 1916
1917/* simply recalculate all periodics */
1918/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1153static void noinline 1919static void noinline
1154periodics_reschedule (EV_P) 1920periodics_reschedule (EV_P)
1155{ 1921{
1156 int i; 1922 int i;
1157 1923
1158 /* adjust periodics after time jump */ 1924 /* adjust periodics after time jump */
1159 for (i = 0; i < periodiccnt; ++i) 1925 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1160 { 1926 {
1161 ev_periodic *w = periodics [i]; 1927 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1162 1928
1163 if (w->reschedule_cb) 1929 if (w->reschedule_cb)
1164 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1930 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1165 else if (w->interval) 1931 else if (w->interval)
1166 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1932 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1933
1934 ANHE_at_cache (periodics [i]);
1935 }
1936
1937 reheap (periodics, periodiccnt);
1938}
1939#endif
1940
1941/* adjust all timers by a given offset */
1942static void noinline
1943timers_reschedule (EV_P_ ev_tstamp adjust)
1944{
1945 int i;
1946
1947 for (i = 0; i < timercnt; ++i)
1167 } 1948 {
1168 1949 ANHE *he = timers + i + HEAP0;
1169 /* now rebuild the heap */ 1950 ANHE_w (*he)->at += adjust;
1170 for (i = periodiccnt >> 1; i--; ) 1951 ANHE_at_cache (*he);
1171 downheap ((WT *)periodics, periodiccnt, i); 1952 }
1172} 1953}
1173#endif
1174 1954
1175int inline_size 1955/* fetch new monotonic and realtime times from the kernel */
1176time_update_monotonic (EV_P) 1956/* also detetc if there was a timejump, and act accordingly */
1957inline_speed void
1958time_update (EV_P_ ev_tstamp max_block)
1177{ 1959{
1960#if EV_USE_MONOTONIC
1961 if (expect_true (have_monotonic))
1962 {
1963 int i;
1964 ev_tstamp odiff = rtmn_diff;
1965
1178 mn_now = get_clock (); 1966 mn_now = get_clock ();
1179 1967
1968 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1969 /* interpolate in the meantime */
1180 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1970 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1181 { 1971 {
1182 ev_rt_now = rtmn_diff + mn_now; 1972 ev_rt_now = rtmn_diff + mn_now;
1183 return 0; 1973 return;
1184 } 1974 }
1185 else 1975
1186 {
1187 now_floor = mn_now; 1976 now_floor = mn_now;
1188 ev_rt_now = ev_time (); 1977 ev_rt_now = ev_time ();
1189 return 1;
1190 }
1191}
1192 1978
1193void inline_size 1979 /* loop a few times, before making important decisions.
1194time_update (EV_P) 1980 * on the choice of "4": one iteration isn't enough,
1195{ 1981 * in case we get preempted during the calls to
1196 int i; 1982 * ev_time and get_clock. a second call is almost guaranteed
1197 1983 * to succeed in that case, though. and looping a few more times
1198#if EV_USE_MONOTONIC 1984 * doesn't hurt either as we only do this on time-jumps or
1199 if (expect_true (have_monotonic)) 1985 * in the unlikely event of having been preempted here.
1200 { 1986 */
1201 if (time_update_monotonic (EV_A)) 1987 for (i = 4; --i; )
1202 { 1988 {
1203 ev_tstamp odiff = rtmn_diff;
1204
1205 /* loop a few times, before making important decisions.
1206 * on the choice of "4": one iteration isn't enough,
1207 * in case we get preempted during the calls to
1208 * ev_time and get_clock. a second call is almost guarenteed
1209 * to succeed in that case, though. and looping a few more times
1210 * doesn't hurt either as we only do this on time-jumps or
1211 * in the unlikely event of getting preempted here.
1212 */
1213 for (i = 4; --i; )
1214 {
1215 rtmn_diff = ev_rt_now - mn_now; 1989 rtmn_diff = ev_rt_now - mn_now;
1216 1990
1217 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1991 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1218 return; /* all is well */ 1992 return; /* all is well */
1219 1993
1220 ev_rt_now = ev_time (); 1994 ev_rt_now = ev_time ();
1221 mn_now = get_clock (); 1995 mn_now = get_clock ();
1222 now_floor = mn_now; 1996 now_floor = mn_now;
1223 } 1997 }
1224 1998
1999 /* no timer adjustment, as the monotonic clock doesn't jump */
2000 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1225# if EV_PERIODIC_ENABLE 2001# if EV_PERIODIC_ENABLE
1226 periodics_reschedule (EV_A); 2002 periodics_reschedule (EV_A);
1227# endif 2003# endif
1228 /* no timer adjustment, as the monotonic clock doesn't jump */
1229 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1230 }
1231 } 2004 }
1232 else 2005 else
1233#endif 2006#endif
1234 { 2007 {
1235 ev_rt_now = ev_time (); 2008 ev_rt_now = ev_time ();
1236 2009
1237 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 2010 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1238 { 2011 {
2012 /* adjust timers. this is easy, as the offset is the same for all of them */
2013 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1239#if EV_PERIODIC_ENABLE 2014#if EV_PERIODIC_ENABLE
1240 periodics_reschedule (EV_A); 2015 periodics_reschedule (EV_A);
1241#endif 2016#endif
1242
1243 /* adjust timers. this is easy, as the offset is the same for all */
1244 for (i = 0; i < timercnt; ++i)
1245 ((WT)timers [i])->at += ev_rt_now - mn_now;
1246 } 2017 }
1247 2018
1248 mn_now = ev_rt_now; 2019 mn_now = ev_rt_now;
1249 } 2020 }
1250} 2021}
1251 2022
1252void
1253ev_ref (EV_P)
1254{
1255 ++activecnt;
1256}
1257
1258void
1259ev_unref (EV_P)
1260{
1261 --activecnt;
1262}
1263
1264static int loop_done; 2023static int loop_done;
1265 2024
1266void 2025void
1267ev_loop (EV_P_ int flags) 2026ev_loop (EV_P_ int flags)
1268{ 2027{
1269 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 2028 loop_done = EVUNLOOP_CANCEL;
1270 ? EVUNLOOP_ONE
1271 : EVUNLOOP_CANCEL;
1272 2029
1273 while (activecnt) 2030 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
2031
2032 do
1274 { 2033 {
2034#if EV_VERIFY >= 2
2035 ev_loop_verify (EV_A);
2036#endif
2037
2038#ifndef _WIN32
2039 if (expect_false (curpid)) /* penalise the forking check even more */
2040 if (expect_false (getpid () != curpid))
2041 {
2042 curpid = getpid ();
2043 postfork = 1;
2044 }
2045#endif
2046
2047#if EV_FORK_ENABLE
2048 /* we might have forked, so queue fork handlers */
2049 if (expect_false (postfork))
2050 if (forkcnt)
2051 {
2052 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2053 call_pending (EV_A);
2054 }
2055#endif
2056
1275 /* queue check watchers (and execute them) */ 2057 /* queue prepare watchers (and execute them) */
1276 if (expect_false (preparecnt)) 2058 if (expect_false (preparecnt))
1277 { 2059 {
1278 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2060 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1279 call_pending (EV_A); 2061 call_pending (EV_A);
1280 } 2062 }
… …
1286 /* update fd-related kernel structures */ 2068 /* update fd-related kernel structures */
1287 fd_reify (EV_A); 2069 fd_reify (EV_A);
1288 2070
1289 /* calculate blocking time */ 2071 /* calculate blocking time */
1290 { 2072 {
1291 double block; 2073 ev_tstamp waittime = 0.;
2074 ev_tstamp sleeptime = 0.;
1292 2075
1293 if (flags & EVLOOP_NONBLOCK || idlecnt) 2076 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1294 block = 0.; /* do not block at all */
1295 else
1296 { 2077 {
1297 /* update time to cancel out callback processing overhead */ 2078 /* update time to cancel out callback processing overhead */
1298#if EV_USE_MONOTONIC
1299 if (expect_true (have_monotonic))
1300 time_update_monotonic (EV_A); 2079 time_update (EV_A_ 1e100);
1301 else
1302#endif
1303 {
1304 ev_rt_now = ev_time ();
1305 mn_now = ev_rt_now;
1306 }
1307 2080
1308 block = MAX_BLOCKTIME; 2081 waittime = MAX_BLOCKTIME;
1309 2082
1310 if (timercnt) 2083 if (timercnt)
1311 { 2084 {
1312 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 2085 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1313 if (block > to) block = to; 2086 if (waittime > to) waittime = to;
1314 } 2087 }
1315 2088
1316#if EV_PERIODIC_ENABLE 2089#if EV_PERIODIC_ENABLE
1317 if (periodiccnt) 2090 if (periodiccnt)
1318 { 2091 {
1319 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 2092 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1320 if (block > to) block = to; 2093 if (waittime > to) waittime = to;
1321 } 2094 }
1322#endif 2095#endif
1323 2096
1324 if (expect_false (block < 0.)) block = 0.; 2097 if (expect_false (waittime < timeout_blocktime))
2098 waittime = timeout_blocktime;
2099
2100 sleeptime = waittime - backend_fudge;
2101
2102 if (expect_true (sleeptime > io_blocktime))
2103 sleeptime = io_blocktime;
2104
2105 if (sleeptime)
2106 {
2107 ev_sleep (sleeptime);
2108 waittime -= sleeptime;
2109 }
1325 } 2110 }
1326 2111
2112 ++loop_count;
1327 backend_poll (EV_A_ block); 2113 backend_poll (EV_A_ waittime);
2114
2115 /* update ev_rt_now, do magic */
2116 time_update (EV_A_ waittime + sleeptime);
1328 } 2117 }
1329
1330 /* update ev_rt_now, do magic */
1331 time_update (EV_A);
1332 2118
1333 /* queue pending timers and reschedule them */ 2119 /* queue pending timers and reschedule them */
1334 timers_reify (EV_A); /* relative timers called last */ 2120 timers_reify (EV_A); /* relative timers called last */
1335#if EV_PERIODIC_ENABLE 2121#if EV_PERIODIC_ENABLE
1336 periodics_reify (EV_A); /* absolute timers called first */ 2122 periodics_reify (EV_A); /* absolute timers called first */
1337#endif 2123#endif
1338 2124
2125#if EV_IDLE_ENABLE
1339 /* queue idle watchers unless other events are pending */ 2126 /* queue idle watchers unless other events are pending */
1340 if (idlecnt && !any_pending (EV_A)) 2127 idle_reify (EV_A);
1341 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 2128#endif
1342 2129
1343 /* queue check watchers, to be executed first */ 2130 /* queue check watchers, to be executed first */
1344 if (expect_false (checkcnt)) 2131 if (expect_false (checkcnt))
1345 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2132 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1346 2133
1347 call_pending (EV_A); 2134 call_pending (EV_A);
1348
1349 if (expect_false (loop_done))
1350 break;
1351 } 2135 }
2136 while (expect_true (
2137 activecnt
2138 && !loop_done
2139 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2140 ));
1352 2141
1353 if (loop_done == EVUNLOOP_ONE) 2142 if (loop_done == EVUNLOOP_ONE)
1354 loop_done = EVUNLOOP_CANCEL; 2143 loop_done = EVUNLOOP_CANCEL;
1355} 2144}
1356 2145
… …
1358ev_unloop (EV_P_ int how) 2147ev_unloop (EV_P_ int how)
1359{ 2148{
1360 loop_done = how; 2149 loop_done = how;
1361} 2150}
1362 2151
2152void
2153ev_ref (EV_P)
2154{
2155 ++activecnt;
2156}
2157
2158void
2159ev_unref (EV_P)
2160{
2161 --activecnt;
2162}
2163
2164void
2165ev_now_update (EV_P)
2166{
2167 time_update (EV_A_ 1e100);
2168}
2169
2170void
2171ev_suspend (EV_P)
2172{
2173 ev_now_update (EV_A);
2174}
2175
2176void
2177ev_resume (EV_P)
2178{
2179 ev_tstamp mn_prev = mn_now;
2180
2181 ev_now_update (EV_A);
2182 timers_reschedule (EV_A_ mn_now - mn_prev);
2183#if EV_PERIODIC_ENABLE
2184 /* TODO: really do this? */
2185 periodics_reschedule (EV_A);
2186#endif
2187}
2188
1363/*****************************************************************************/ 2189/*****************************************************************************/
2190/* singly-linked list management, used when the expected list length is short */
1364 2191
1365void inline_size 2192inline_size void
1366wlist_add (WL *head, WL elem) 2193wlist_add (WL *head, WL elem)
1367{ 2194{
1368 elem->next = *head; 2195 elem->next = *head;
1369 *head = elem; 2196 *head = elem;
1370} 2197}
1371 2198
1372void inline_size 2199inline_size void
1373wlist_del (WL *head, WL elem) 2200wlist_del (WL *head, WL elem)
1374{ 2201{
1375 while (*head) 2202 while (*head)
1376 { 2203 {
1377 if (*head == elem) 2204 if (*head == elem)
… …
1382 2209
1383 head = &(*head)->next; 2210 head = &(*head)->next;
1384 } 2211 }
1385} 2212}
1386 2213
1387void inline_speed 2214/* internal, faster, version of ev_clear_pending */
2215inline_speed void
1388ev_clear_pending (EV_P_ W w) 2216clear_pending (EV_P_ W w)
1389{ 2217{
1390 if (w->pending) 2218 if (w->pending)
1391 { 2219 {
1392 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2220 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1393 w->pending = 0; 2221 w->pending = 0;
1394 } 2222 }
1395} 2223}
1396 2224
1397void inline_speed 2225int
2226ev_clear_pending (EV_P_ void *w)
2227{
2228 W w_ = (W)w;
2229 int pending = w_->pending;
2230
2231 if (expect_true (pending))
2232 {
2233 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2234 p->w = (W)&pending_w;
2235 w_->pending = 0;
2236 return p->events;
2237 }
2238 else
2239 return 0;
2240}
2241
2242inline_size void
2243pri_adjust (EV_P_ W w)
2244{
2245 int pri = w->priority;
2246 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2247 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2248 w->priority = pri;
2249}
2250
2251inline_speed void
1398ev_start (EV_P_ W w, int active) 2252ev_start (EV_P_ W w, int active)
1399{ 2253{
1400 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 2254 pri_adjust (EV_A_ w);
1401 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1402
1403 w->active = active; 2255 w->active = active;
1404 ev_ref (EV_A); 2256 ev_ref (EV_A);
1405} 2257}
1406 2258
1407void inline_size 2259inline_size void
1408ev_stop (EV_P_ W w) 2260ev_stop (EV_P_ W w)
1409{ 2261{
1410 ev_unref (EV_A); 2262 ev_unref (EV_A);
1411 w->active = 0; 2263 w->active = 0;
1412} 2264}
1413 2265
1414/*****************************************************************************/ 2266/*****************************************************************************/
1415 2267
1416void 2268void noinline
1417ev_io_start (EV_P_ ev_io *w) 2269ev_io_start (EV_P_ ev_io *w)
1418{ 2270{
1419 int fd = w->fd; 2271 int fd = w->fd;
1420 2272
1421 if (expect_false (ev_is_active (w))) 2273 if (expect_false (ev_is_active (w)))
1422 return; 2274 return;
1423 2275
1424 assert (("ev_io_start called with negative fd", fd >= 0)); 2276 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2277 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2278
2279 EV_FREQUENT_CHECK;
1425 2280
1426 ev_start (EV_A_ (W)w, 1); 2281 ev_start (EV_A_ (W)w, 1);
1427 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2282 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1428 wlist_add ((WL *)&anfds[fd].head, (WL)w); 2283 wlist_add (&anfds[fd].head, (WL)w);
1429 2284
1430 fd_change (EV_A_ fd); 2285 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
1431} 2286 w->events &= ~EV__IOFDSET;
1432 2287
1433void 2288 EV_FREQUENT_CHECK;
2289}
2290
2291void noinline
1434ev_io_stop (EV_P_ ev_io *w) 2292ev_io_stop (EV_P_ ev_io *w)
1435{ 2293{
1436 ev_clear_pending (EV_A_ (W)w); 2294 clear_pending (EV_A_ (W)w);
1437 if (expect_false (!ev_is_active (w))) 2295 if (expect_false (!ev_is_active (w)))
1438 return; 2296 return;
1439 2297
1440 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2298 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1441 2299
2300 EV_FREQUENT_CHECK;
2301
1442 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 2302 wlist_del (&anfds[w->fd].head, (WL)w);
1443 ev_stop (EV_A_ (W)w); 2303 ev_stop (EV_A_ (W)w);
1444 2304
1445 fd_change (EV_A_ w->fd); 2305 fd_change (EV_A_ w->fd, 1);
1446}
1447 2306
1448void 2307 EV_FREQUENT_CHECK;
2308}
2309
2310void noinline
1449ev_timer_start (EV_P_ ev_timer *w) 2311ev_timer_start (EV_P_ ev_timer *w)
1450{ 2312{
1451 if (expect_false (ev_is_active (w))) 2313 if (expect_false (ev_is_active (w)))
1452 return; 2314 return;
1453 2315
1454 ((WT)w)->at += mn_now; 2316 ev_at (w) += mn_now;
1455 2317
1456 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2318 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1457 2319
2320 EV_FREQUENT_CHECK;
2321
2322 ++timercnt;
1458 ev_start (EV_A_ (W)w, ++timercnt); 2323 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1459 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); 2324 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1460 timers [timercnt - 1] = w; 2325 ANHE_w (timers [ev_active (w)]) = (WT)w;
1461 upheap ((WT *)timers, timercnt - 1); 2326 ANHE_at_cache (timers [ev_active (w)]);
2327 upheap (timers, ev_active (w));
1462 2328
2329 EV_FREQUENT_CHECK;
2330
1463 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2331 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1464} 2332}
1465 2333
1466void 2334void noinline
1467ev_timer_stop (EV_P_ ev_timer *w) 2335ev_timer_stop (EV_P_ ev_timer *w)
1468{ 2336{
1469 ev_clear_pending (EV_A_ (W)w); 2337 clear_pending (EV_A_ (W)w);
1470 if (expect_false (!ev_is_active (w))) 2338 if (expect_false (!ev_is_active (w)))
1471 return; 2339 return;
1472 2340
2341 EV_FREQUENT_CHECK;
2342
2343 {
2344 int active = ev_active (w);
2345
1473 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2346 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
1474 2347
2348 --timercnt;
2349
1475 if (expect_true (((W)w)->active < timercnt--)) 2350 if (expect_true (active < timercnt + HEAP0))
1476 { 2351 {
1477 timers [((W)w)->active - 1] = timers [timercnt]; 2352 timers [active] = timers [timercnt + HEAP0];
1478 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2353 adjustheap (timers, timercnt, active);
1479 } 2354 }
2355 }
1480 2356
1481 ((WT)w)->at -= mn_now; 2357 EV_FREQUENT_CHECK;
2358
2359 ev_at (w) -= mn_now;
1482 2360
1483 ev_stop (EV_A_ (W)w); 2361 ev_stop (EV_A_ (W)w);
1484} 2362}
1485 2363
1486void 2364void noinline
1487ev_timer_again (EV_P_ ev_timer *w) 2365ev_timer_again (EV_P_ ev_timer *w)
1488{ 2366{
2367 EV_FREQUENT_CHECK;
2368
1489 if (ev_is_active (w)) 2369 if (ev_is_active (w))
1490 { 2370 {
1491 if (w->repeat) 2371 if (w->repeat)
1492 { 2372 {
1493 ((WT)w)->at = mn_now + w->repeat; 2373 ev_at (w) = mn_now + w->repeat;
2374 ANHE_at_cache (timers [ev_active (w)]);
1494 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2375 adjustheap (timers, timercnt, ev_active (w));
1495 } 2376 }
1496 else 2377 else
1497 ev_timer_stop (EV_A_ w); 2378 ev_timer_stop (EV_A_ w);
1498 } 2379 }
1499 else if (w->repeat) 2380 else if (w->repeat)
1500 { 2381 {
1501 w->at = w->repeat; 2382 ev_at (w) = w->repeat;
1502 ev_timer_start (EV_A_ w); 2383 ev_timer_start (EV_A_ w);
1503 } 2384 }
2385
2386 EV_FREQUENT_CHECK;
1504} 2387}
1505 2388
1506#if EV_PERIODIC_ENABLE 2389#if EV_PERIODIC_ENABLE
1507void 2390void noinline
1508ev_periodic_start (EV_P_ ev_periodic *w) 2391ev_periodic_start (EV_P_ ev_periodic *w)
1509{ 2392{
1510 if (expect_false (ev_is_active (w))) 2393 if (expect_false (ev_is_active (w)))
1511 return; 2394 return;
1512 2395
1513 if (w->reschedule_cb) 2396 if (w->reschedule_cb)
1514 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2397 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1515 else if (w->interval) 2398 else if (w->interval)
1516 { 2399 {
1517 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2400 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1518 /* this formula differs from the one in periodic_reify because we do not always round up */ 2401 /* this formula differs from the one in periodic_reify because we do not always round up */
1519 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 2402 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1520 } 2403 }
2404 else
2405 ev_at (w) = w->offset;
1521 2406
2407 EV_FREQUENT_CHECK;
2408
2409 ++periodiccnt;
1522 ev_start (EV_A_ (W)w, ++periodiccnt); 2410 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1523 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 2411 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1524 periodics [periodiccnt - 1] = w; 2412 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1525 upheap ((WT *)periodics, periodiccnt - 1); 2413 ANHE_at_cache (periodics [ev_active (w)]);
2414 upheap (periodics, ev_active (w));
1526 2415
2416 EV_FREQUENT_CHECK;
2417
1527 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2418 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1528} 2419}
1529 2420
1530void 2421void noinline
1531ev_periodic_stop (EV_P_ ev_periodic *w) 2422ev_periodic_stop (EV_P_ ev_periodic *w)
1532{ 2423{
1533 ev_clear_pending (EV_A_ (W)w); 2424 clear_pending (EV_A_ (W)w);
1534 if (expect_false (!ev_is_active (w))) 2425 if (expect_false (!ev_is_active (w)))
1535 return; 2426 return;
1536 2427
2428 EV_FREQUENT_CHECK;
2429
2430 {
2431 int active = ev_active (w);
2432
1537 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2433 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
1538 2434
2435 --periodiccnt;
2436
1539 if (expect_true (((W)w)->active < periodiccnt--)) 2437 if (expect_true (active < periodiccnt + HEAP0))
1540 { 2438 {
1541 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 2439 periodics [active] = periodics [periodiccnt + HEAP0];
1542 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 2440 adjustheap (periodics, periodiccnt, active);
1543 } 2441 }
2442 }
2443
2444 EV_FREQUENT_CHECK;
1544 2445
1545 ev_stop (EV_A_ (W)w); 2446 ev_stop (EV_A_ (W)w);
1546} 2447}
1547 2448
1548void 2449void noinline
1549ev_periodic_again (EV_P_ ev_periodic *w) 2450ev_periodic_again (EV_P_ ev_periodic *w)
1550{ 2451{
1551 /* TODO: use adjustheap and recalculation */ 2452 /* TODO: use adjustheap and recalculation */
1552 ev_periodic_stop (EV_A_ w); 2453 ev_periodic_stop (EV_A_ w);
1553 ev_periodic_start (EV_A_ w); 2454 ev_periodic_start (EV_A_ w);
1554} 2455}
1555#endif 2456#endif
1556 2457
1557void 2458#ifndef SA_RESTART
2459# define SA_RESTART 0
2460#endif
2461
2462void noinline
1558ev_idle_start (EV_P_ ev_idle *w) 2463ev_signal_start (EV_P_ ev_signal *w)
1559{ 2464{
2465#if EV_MULTIPLICITY
2466 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2467#endif
1560 if (expect_false (ev_is_active (w))) 2468 if (expect_false (ev_is_active (w)))
1561 return; 2469 return;
1562 2470
1563 ev_start (EV_A_ (W)w, ++idlecnt); 2471 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
1564 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1565 idles [idlecnt - 1] = w;
1566}
1567 2472
1568void 2473 evpipe_init (EV_A);
1569ev_idle_stop (EV_P_ ev_idle *w) 2474
1570{ 2475 EV_FREQUENT_CHECK;
1571 ev_clear_pending (EV_A_ (W)w);
1572 if (expect_false (!ev_is_active (w)))
1573 return;
1574 2476
1575 { 2477 {
1576 int active = ((W)w)->active; 2478#ifndef _WIN32
1577 idles [active - 1] = idles [--idlecnt]; 2479 sigset_t full, prev;
1578 ((W)idles [active - 1])->active = active; 2480 sigfillset (&full);
2481 sigprocmask (SIG_SETMASK, &full, &prev);
2482#endif
2483
2484 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2485
2486#ifndef _WIN32
2487 sigprocmask (SIG_SETMASK, &prev, 0);
2488#endif
1579 } 2489 }
1580 2490
1581 ev_stop (EV_A_ (W)w);
1582}
1583
1584void
1585ev_prepare_start (EV_P_ ev_prepare *w)
1586{
1587 if (expect_false (ev_is_active (w)))
1588 return;
1589
1590 ev_start (EV_A_ (W)w, ++preparecnt);
1591 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1592 prepares [preparecnt - 1] = w;
1593}
1594
1595void
1596ev_prepare_stop (EV_P_ ev_prepare *w)
1597{
1598 ev_clear_pending (EV_A_ (W)w);
1599 if (expect_false (!ev_is_active (w)))
1600 return;
1601
1602 {
1603 int active = ((W)w)->active;
1604 prepares [active - 1] = prepares [--preparecnt];
1605 ((W)prepares [active - 1])->active = active;
1606 }
1607
1608 ev_stop (EV_A_ (W)w);
1609}
1610
1611void
1612ev_check_start (EV_P_ ev_check *w)
1613{
1614 if (expect_false (ev_is_active (w)))
1615 return;
1616
1617 ev_start (EV_A_ (W)w, ++checkcnt);
1618 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1619 checks [checkcnt - 1] = w;
1620}
1621
1622void
1623ev_check_stop (EV_P_ ev_check *w)
1624{
1625 ev_clear_pending (EV_A_ (W)w);
1626 if (expect_false (!ev_is_active (w)))
1627 return;
1628
1629 {
1630 int active = ((W)w)->active;
1631 checks [active - 1] = checks [--checkcnt];
1632 ((W)checks [active - 1])->active = active;
1633 }
1634
1635 ev_stop (EV_A_ (W)w);
1636}
1637
1638#ifndef SA_RESTART
1639# define SA_RESTART 0
1640#endif
1641
1642void
1643ev_signal_start (EV_P_ ev_signal *w)
1644{
1645#if EV_MULTIPLICITY
1646 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1647#endif
1648 if (expect_false (ev_is_active (w)))
1649 return;
1650
1651 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1652
1653 ev_start (EV_A_ (W)w, 1); 2491 ev_start (EV_A_ (W)w, 1);
1654 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1655 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 2492 wlist_add (&signals [w->signum - 1].head, (WL)w);
1656 2493
1657 if (!((WL)w)->next) 2494 if (!((WL)w)->next)
1658 { 2495 {
1659#if _WIN32 2496#if _WIN32
1660 signal (w->signum, sighandler); 2497 signal (w->signum, ev_sighandler);
1661#else 2498#else
1662 struct sigaction sa; 2499 struct sigaction sa;
1663 sa.sa_handler = sighandler; 2500 sa.sa_handler = ev_sighandler;
1664 sigfillset (&sa.sa_mask); 2501 sigfillset (&sa.sa_mask);
1665 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2502 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1666 sigaction (w->signum, &sa, 0); 2503 sigaction (w->signum, &sa, 0);
1667#endif 2504#endif
1668 } 2505 }
1669}
1670 2506
1671void 2507 EV_FREQUENT_CHECK;
2508}
2509
2510void noinline
1672ev_signal_stop (EV_P_ ev_signal *w) 2511ev_signal_stop (EV_P_ ev_signal *w)
1673{ 2512{
1674 ev_clear_pending (EV_A_ (W)w); 2513 clear_pending (EV_A_ (W)w);
1675 if (expect_false (!ev_is_active (w))) 2514 if (expect_false (!ev_is_active (w)))
1676 return; 2515 return;
1677 2516
2517 EV_FREQUENT_CHECK;
2518
1678 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 2519 wlist_del (&signals [w->signum - 1].head, (WL)w);
1679 ev_stop (EV_A_ (W)w); 2520 ev_stop (EV_A_ (W)w);
1680 2521
1681 if (!signals [w->signum - 1].head) 2522 if (!signals [w->signum - 1].head)
1682 signal (w->signum, SIG_DFL); 2523 signal (w->signum, SIG_DFL);
2524
2525 EV_FREQUENT_CHECK;
1683} 2526}
1684 2527
1685void 2528void
1686ev_child_start (EV_P_ ev_child *w) 2529ev_child_start (EV_P_ ev_child *w)
1687{ 2530{
1688#if EV_MULTIPLICITY 2531#if EV_MULTIPLICITY
1689 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2532 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1690#endif 2533#endif
1691 if (expect_false (ev_is_active (w))) 2534 if (expect_false (ev_is_active (w)))
1692 return; 2535 return;
1693 2536
2537 EV_FREQUENT_CHECK;
2538
1694 ev_start (EV_A_ (W)w, 1); 2539 ev_start (EV_A_ (W)w, 1);
1695 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2540 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2541
2542 EV_FREQUENT_CHECK;
1696} 2543}
1697 2544
1698void 2545void
1699ev_child_stop (EV_P_ ev_child *w) 2546ev_child_stop (EV_P_ ev_child *w)
1700{ 2547{
1701 ev_clear_pending (EV_A_ (W)w); 2548 clear_pending (EV_A_ (W)w);
1702 if (expect_false (!ev_is_active (w))) 2549 if (expect_false (!ev_is_active (w)))
1703 return; 2550 return;
1704 2551
2552 EV_FREQUENT_CHECK;
2553
1705 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2554 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1706 ev_stop (EV_A_ (W)w); 2555 ev_stop (EV_A_ (W)w);
1707}
1708 2556
2557 EV_FREQUENT_CHECK;
2558}
2559
1709#if EV_EMBED_ENABLE 2560#if EV_STAT_ENABLE
2561
2562# ifdef _WIN32
2563# undef lstat
2564# define lstat(a,b) _stati64 (a,b)
2565# endif
2566
2567#define DEF_STAT_INTERVAL 5.0074891
2568#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2569#define MIN_STAT_INTERVAL 0.1074891
2570
2571static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2572
2573#if EV_USE_INOTIFY
2574# define EV_INOTIFY_BUFSIZE 8192
2575
1710void noinline 2576static void noinline
1711ev_embed_sweep (EV_P_ ev_embed *w) 2577infy_add (EV_P_ ev_stat *w)
1712{ 2578{
1713 ev_loop (w->loop, EVLOOP_NONBLOCK); 2579 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2580
2581 if (w->wd < 0)
2582 {
2583 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2584 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2585
2586 /* monitor some parent directory for speedup hints */
2587 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2588 /* but an efficiency issue only */
2589 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2590 {
2591 char path [4096];
2592 strcpy (path, w->path);
2593
2594 do
2595 {
2596 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2597 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2598
2599 char *pend = strrchr (path, '/');
2600
2601 if (!pend || pend == path)
2602 break;
2603
2604 *pend = 0;
2605 w->wd = inotify_add_watch (fs_fd, path, mask);
2606 }
2607 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2608 }
2609 }
2610
2611 if (w->wd >= 0)
2612 {
2613 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2614
2615 /* now local changes will be tracked by inotify, but remote changes won't */
2616 /* unless the filesystem it known to be local, we therefore still poll */
2617 /* also do poll on <2.6.25, but with normal frequency */
2618 struct statfs sfs;
2619
2620 if (fs_2625 && !statfs (w->path, &sfs))
2621 if (sfs.f_type == 0x1373 /* devfs */
2622 || sfs.f_type == 0xEF53 /* ext2/3 */
2623 || sfs.f_type == 0x3153464a /* jfs */
2624 || sfs.f_type == 0x52654973 /* reiser3 */
2625 || sfs.f_type == 0x01021994 /* tempfs */
2626 || sfs.f_type == 0x58465342 /* xfs */)
2627 return;
2628
2629 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2630 ev_timer_again (EV_A_ &w->timer);
2631 }
2632}
2633
2634static void noinline
2635infy_del (EV_P_ ev_stat *w)
2636{
2637 int slot;
2638 int wd = w->wd;
2639
2640 if (wd < 0)
2641 return;
2642
2643 w->wd = -2;
2644 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2645 wlist_del (&fs_hash [slot].head, (WL)w);
2646
2647 /* remove this watcher, if others are watching it, they will rearm */
2648 inotify_rm_watch (fs_fd, wd);
2649}
2650
2651static void noinline
2652infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2653{
2654 if (slot < 0)
2655 /* overflow, need to check for all hash slots */
2656 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2657 infy_wd (EV_A_ slot, wd, ev);
2658 else
2659 {
2660 WL w_;
2661
2662 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2663 {
2664 ev_stat *w = (ev_stat *)w_;
2665 w_ = w_->next; /* lets us remove this watcher and all before it */
2666
2667 if (w->wd == wd || wd == -1)
2668 {
2669 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2670 {
2671 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2672 w->wd = -1;
2673 infy_add (EV_A_ w); /* re-add, no matter what */
2674 }
2675
2676 stat_timer_cb (EV_A_ &w->timer, 0);
2677 }
2678 }
2679 }
1714} 2680}
1715 2681
1716static void 2682static void
1717embed_cb (EV_P_ ev_io *io, int revents) 2683infy_cb (EV_P_ ev_io *w, int revents)
1718{ 2684{
1719 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 2685 char buf [EV_INOTIFY_BUFSIZE];
2686 struct inotify_event *ev = (struct inotify_event *)buf;
2687 int ofs;
2688 int len = read (fs_fd, buf, sizeof (buf));
1720 2689
1721 if (ev_cb (w)) 2690 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1722 ev_feed_event (EV_A_ (W)w, EV_EMBED); 2691 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1723 else
1724 ev_embed_sweep (loop, w);
1725} 2692}
1726 2693
1727void 2694inline_size void
1728ev_embed_start (EV_P_ ev_embed *w) 2695check_2625 (EV_P)
1729{ 2696{
1730 if (expect_false (ev_is_active (w))) 2697 /* kernels < 2.6.25 are borked
2698 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2699 */
2700 struct utsname buf;
2701 int major, minor, micro;
2702
2703 if (uname (&buf))
1731 return; 2704 return;
1732 2705
1733 { 2706 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
1734 struct ev_loop *loop = w->loop;
1735 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1736 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
1737 }
1738
1739 ev_set_priority (&w->io, ev_priority (w));
1740 ev_io_start (EV_A_ &w->io);
1741
1742 ev_start (EV_A_ (W)w, 1);
1743}
1744
1745void
1746ev_embed_stop (EV_P_ ev_embed *w)
1747{
1748 ev_clear_pending (EV_A_ (W)w);
1749 if (expect_false (!ev_is_active (w)))
1750 return; 2707 return;
1751 2708
1752 ev_io_stop (EV_A_ &w->io); 2709 if (major < 2
2710 || (major == 2 && minor < 6)
2711 || (major == 2 && minor == 6 && micro < 25))
2712 return;
1753 2713
1754 ev_stop (EV_A_ (W)w); 2714 fs_2625 = 1;
1755} 2715}
1756#endif
1757 2716
1758#if EV_STAT_ENABLE 2717inline_size void
2718infy_init (EV_P)
2719{
2720 if (fs_fd != -2)
2721 return;
1759 2722
2723 fs_fd = -1;
2724
2725 check_2625 (EV_A);
2726
2727 fs_fd = inotify_init ();
2728
2729 if (fs_fd >= 0)
2730 {
2731 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2732 ev_set_priority (&fs_w, EV_MAXPRI);
2733 ev_io_start (EV_A_ &fs_w);
2734 }
2735}
2736
2737inline_size void
2738infy_fork (EV_P)
2739{
2740 int slot;
2741
2742 if (fs_fd < 0)
2743 return;
2744
2745 close (fs_fd);
2746 fs_fd = inotify_init ();
2747
2748 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2749 {
2750 WL w_ = fs_hash [slot].head;
2751 fs_hash [slot].head = 0;
2752
2753 while (w_)
2754 {
2755 ev_stat *w = (ev_stat *)w_;
2756 w_ = w_->next; /* lets us add this watcher */
2757
2758 w->wd = -1;
2759
2760 if (fs_fd >= 0)
2761 infy_add (EV_A_ w); /* re-add, no matter what */
2762 else
2763 ev_timer_again (EV_A_ &w->timer);
2764 }
2765 }
2766}
2767
2768#endif
2769
1760# ifdef _WIN32 2770#ifdef _WIN32
1761# define lstat(a,b) stat(a,b) 2771# define EV_LSTAT(p,b) _stati64 (p, b)
2772#else
2773# define EV_LSTAT(p,b) lstat (p, b)
1762# endif 2774#endif
1763 2775
1764void 2776void
1765ev_stat_stat (EV_P_ ev_stat *w) 2777ev_stat_stat (EV_P_ ev_stat *w)
1766{ 2778{
1767 if (lstat (w->path, &w->attr) < 0) 2779 if (lstat (w->path, &w->attr) < 0)
1768 w->attr.st_nlink = 0; 2780 w->attr.st_nlink = 0;
1769 else if (!w->attr.st_nlink) 2781 else if (!w->attr.st_nlink)
1770 w->attr.st_nlink = 1; 2782 w->attr.st_nlink = 1;
1771} 2783}
1772 2784
1773static void 2785static void noinline
1774stat_timer_cb (EV_P_ ev_timer *w_, int revents) 2786stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1775{ 2787{
1776 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 2788 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1777 2789
1778 /* we copy this here each the time so that */ 2790 /* we copy this here each the time so that */
1779 /* prev has the old value when the callback gets invoked */ 2791 /* prev has the old value when the callback gets invoked */
1780 w->prev = w->attr; 2792 w->prev = w->attr;
1781 ev_stat_stat (EV_A_ w); 2793 ev_stat_stat (EV_A_ w);
1782 2794
1783 if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata))) 2795 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2796 if (
2797 w->prev.st_dev != w->attr.st_dev
2798 || w->prev.st_ino != w->attr.st_ino
2799 || w->prev.st_mode != w->attr.st_mode
2800 || w->prev.st_nlink != w->attr.st_nlink
2801 || w->prev.st_uid != w->attr.st_uid
2802 || w->prev.st_gid != w->attr.st_gid
2803 || w->prev.st_rdev != w->attr.st_rdev
2804 || w->prev.st_size != w->attr.st_size
2805 || w->prev.st_atime != w->attr.st_atime
2806 || w->prev.st_mtime != w->attr.st_mtime
2807 || w->prev.st_ctime != w->attr.st_ctime
2808 ) {
2809 #if EV_USE_INOTIFY
2810 if (fs_fd >= 0)
2811 {
2812 infy_del (EV_A_ w);
2813 infy_add (EV_A_ w);
2814 ev_stat_stat (EV_A_ w); /* avoid race... */
2815 }
2816 #endif
2817
1784 ev_feed_event (EV_A_ w, EV_STAT); 2818 ev_feed_event (EV_A_ w, EV_STAT);
2819 }
1785} 2820}
1786 2821
1787void 2822void
1788ev_stat_start (EV_P_ ev_stat *w) 2823ev_stat_start (EV_P_ ev_stat *w)
1789{ 2824{
1790 if (expect_false (ev_is_active (w))) 2825 if (expect_false (ev_is_active (w)))
1791 return; 2826 return;
1792 2827
1793 /* since we use memcmp, we need to clear any padding data etc. */
1794 memset (&w->prev, 0, sizeof (ev_statdata));
1795 memset (&w->attr, 0, sizeof (ev_statdata));
1796
1797 ev_stat_stat (EV_A_ w); 2828 ev_stat_stat (EV_A_ w);
1798 2829
2830 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2831 w->interval = MIN_STAT_INTERVAL;
2832
1799 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 2833 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
1800 ev_set_priority (&w->timer, ev_priority (w)); 2834 ev_set_priority (&w->timer, ev_priority (w));
2835
2836#if EV_USE_INOTIFY
2837 infy_init (EV_A);
2838
2839 if (fs_fd >= 0)
2840 infy_add (EV_A_ w);
2841 else
2842#endif
1801 ev_timer_start (EV_A_ &w->timer); 2843 ev_timer_again (EV_A_ &w->timer);
1802 2844
1803 ev_start (EV_A_ (W)w, 1); 2845 ev_start (EV_A_ (W)w, 1);
2846
2847 EV_FREQUENT_CHECK;
1804} 2848}
1805 2849
1806void 2850void
1807ev_stat_stop (EV_P_ ev_stat *w) 2851ev_stat_stop (EV_P_ ev_stat *w)
1808{ 2852{
1809 ev_clear_pending (EV_A_ (W)w); 2853 clear_pending (EV_A_ (W)w);
1810 if (expect_false (!ev_is_active (w))) 2854 if (expect_false (!ev_is_active (w)))
1811 return; 2855 return;
1812 2856
2857 EV_FREQUENT_CHECK;
2858
2859#if EV_USE_INOTIFY
2860 infy_del (EV_A_ w);
2861#endif
1813 ev_timer_stop (EV_A_ &w->timer); 2862 ev_timer_stop (EV_A_ &w->timer);
1814 2863
1815 ev_stop (EV_A_ (W)w); 2864 ev_stop (EV_A_ (W)w);
2865
2866 EV_FREQUENT_CHECK;
2867}
2868#endif
2869
2870#if EV_IDLE_ENABLE
2871void
2872ev_idle_start (EV_P_ ev_idle *w)
2873{
2874 if (expect_false (ev_is_active (w)))
2875 return;
2876
2877 pri_adjust (EV_A_ (W)w);
2878
2879 EV_FREQUENT_CHECK;
2880
2881 {
2882 int active = ++idlecnt [ABSPRI (w)];
2883
2884 ++idleall;
2885 ev_start (EV_A_ (W)w, active);
2886
2887 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2888 idles [ABSPRI (w)][active - 1] = w;
2889 }
2890
2891 EV_FREQUENT_CHECK;
2892}
2893
2894void
2895ev_idle_stop (EV_P_ ev_idle *w)
2896{
2897 clear_pending (EV_A_ (W)w);
2898 if (expect_false (!ev_is_active (w)))
2899 return;
2900
2901 EV_FREQUENT_CHECK;
2902
2903 {
2904 int active = ev_active (w);
2905
2906 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2907 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2908
2909 ev_stop (EV_A_ (W)w);
2910 --idleall;
2911 }
2912
2913 EV_FREQUENT_CHECK;
2914}
2915#endif
2916
2917void
2918ev_prepare_start (EV_P_ ev_prepare *w)
2919{
2920 if (expect_false (ev_is_active (w)))
2921 return;
2922
2923 EV_FREQUENT_CHECK;
2924
2925 ev_start (EV_A_ (W)w, ++preparecnt);
2926 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2927 prepares [preparecnt - 1] = w;
2928
2929 EV_FREQUENT_CHECK;
2930}
2931
2932void
2933ev_prepare_stop (EV_P_ ev_prepare *w)
2934{
2935 clear_pending (EV_A_ (W)w);
2936 if (expect_false (!ev_is_active (w)))
2937 return;
2938
2939 EV_FREQUENT_CHECK;
2940
2941 {
2942 int active = ev_active (w);
2943
2944 prepares [active - 1] = prepares [--preparecnt];
2945 ev_active (prepares [active - 1]) = active;
2946 }
2947
2948 ev_stop (EV_A_ (W)w);
2949
2950 EV_FREQUENT_CHECK;
2951}
2952
2953void
2954ev_check_start (EV_P_ ev_check *w)
2955{
2956 if (expect_false (ev_is_active (w)))
2957 return;
2958
2959 EV_FREQUENT_CHECK;
2960
2961 ev_start (EV_A_ (W)w, ++checkcnt);
2962 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2963 checks [checkcnt - 1] = w;
2964
2965 EV_FREQUENT_CHECK;
2966}
2967
2968void
2969ev_check_stop (EV_P_ ev_check *w)
2970{
2971 clear_pending (EV_A_ (W)w);
2972 if (expect_false (!ev_is_active (w)))
2973 return;
2974
2975 EV_FREQUENT_CHECK;
2976
2977 {
2978 int active = ev_active (w);
2979
2980 checks [active - 1] = checks [--checkcnt];
2981 ev_active (checks [active - 1]) = active;
2982 }
2983
2984 ev_stop (EV_A_ (W)w);
2985
2986 EV_FREQUENT_CHECK;
2987}
2988
2989#if EV_EMBED_ENABLE
2990void noinline
2991ev_embed_sweep (EV_P_ ev_embed *w)
2992{
2993 ev_loop (w->other, EVLOOP_NONBLOCK);
2994}
2995
2996static void
2997embed_io_cb (EV_P_ ev_io *io, int revents)
2998{
2999 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3000
3001 if (ev_cb (w))
3002 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3003 else
3004 ev_loop (w->other, EVLOOP_NONBLOCK);
3005}
3006
3007static void
3008embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3009{
3010 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3011
3012 {
3013 struct ev_loop *loop = w->other;
3014
3015 while (fdchangecnt)
3016 {
3017 fd_reify (EV_A);
3018 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3019 }
3020 }
3021}
3022
3023static void
3024embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3025{
3026 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3027
3028 ev_embed_stop (EV_A_ w);
3029
3030 {
3031 struct ev_loop *loop = w->other;
3032
3033 ev_loop_fork (EV_A);
3034 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3035 }
3036
3037 ev_embed_start (EV_A_ w);
3038}
3039
3040#if 0
3041static void
3042embed_idle_cb (EV_P_ ev_idle *idle, int revents)
3043{
3044 ev_idle_stop (EV_A_ idle);
3045}
3046#endif
3047
3048void
3049ev_embed_start (EV_P_ ev_embed *w)
3050{
3051 if (expect_false (ev_is_active (w)))
3052 return;
3053
3054 {
3055 struct ev_loop *loop = w->other;
3056 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3057 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3058 }
3059
3060 EV_FREQUENT_CHECK;
3061
3062 ev_set_priority (&w->io, ev_priority (w));
3063 ev_io_start (EV_A_ &w->io);
3064
3065 ev_prepare_init (&w->prepare, embed_prepare_cb);
3066 ev_set_priority (&w->prepare, EV_MINPRI);
3067 ev_prepare_start (EV_A_ &w->prepare);
3068
3069 ev_fork_init (&w->fork, embed_fork_cb);
3070 ev_fork_start (EV_A_ &w->fork);
3071
3072 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
3073
3074 ev_start (EV_A_ (W)w, 1);
3075
3076 EV_FREQUENT_CHECK;
3077}
3078
3079void
3080ev_embed_stop (EV_P_ ev_embed *w)
3081{
3082 clear_pending (EV_A_ (W)w);
3083 if (expect_false (!ev_is_active (w)))
3084 return;
3085
3086 EV_FREQUENT_CHECK;
3087
3088 ev_io_stop (EV_A_ &w->io);
3089 ev_prepare_stop (EV_A_ &w->prepare);
3090 ev_fork_stop (EV_A_ &w->fork);
3091
3092 EV_FREQUENT_CHECK;
3093}
3094#endif
3095
3096#if EV_FORK_ENABLE
3097void
3098ev_fork_start (EV_P_ ev_fork *w)
3099{
3100 if (expect_false (ev_is_active (w)))
3101 return;
3102
3103 EV_FREQUENT_CHECK;
3104
3105 ev_start (EV_A_ (W)w, ++forkcnt);
3106 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
3107 forks [forkcnt - 1] = w;
3108
3109 EV_FREQUENT_CHECK;
3110}
3111
3112void
3113ev_fork_stop (EV_P_ ev_fork *w)
3114{
3115 clear_pending (EV_A_ (W)w);
3116 if (expect_false (!ev_is_active (w)))
3117 return;
3118
3119 EV_FREQUENT_CHECK;
3120
3121 {
3122 int active = ev_active (w);
3123
3124 forks [active - 1] = forks [--forkcnt];
3125 ev_active (forks [active - 1]) = active;
3126 }
3127
3128 ev_stop (EV_A_ (W)w);
3129
3130 EV_FREQUENT_CHECK;
3131}
3132#endif
3133
3134#if EV_ASYNC_ENABLE
3135void
3136ev_async_start (EV_P_ ev_async *w)
3137{
3138 if (expect_false (ev_is_active (w)))
3139 return;
3140
3141 evpipe_init (EV_A);
3142
3143 EV_FREQUENT_CHECK;
3144
3145 ev_start (EV_A_ (W)w, ++asynccnt);
3146 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
3147 asyncs [asynccnt - 1] = w;
3148
3149 EV_FREQUENT_CHECK;
3150}
3151
3152void
3153ev_async_stop (EV_P_ ev_async *w)
3154{
3155 clear_pending (EV_A_ (W)w);
3156 if (expect_false (!ev_is_active (w)))
3157 return;
3158
3159 EV_FREQUENT_CHECK;
3160
3161 {
3162 int active = ev_active (w);
3163
3164 asyncs [active - 1] = asyncs [--asynccnt];
3165 ev_active (asyncs [active - 1]) = active;
3166 }
3167
3168 ev_stop (EV_A_ (W)w);
3169
3170 EV_FREQUENT_CHECK;
3171}
3172
3173void
3174ev_async_send (EV_P_ ev_async *w)
3175{
3176 w->sent = 1;
3177 evpipe_write (EV_A_ &gotasync);
1816} 3178}
1817#endif 3179#endif
1818 3180
1819/*****************************************************************************/ 3181/*****************************************************************************/
1820 3182
… …
1830once_cb (EV_P_ struct ev_once *once, int revents) 3192once_cb (EV_P_ struct ev_once *once, int revents)
1831{ 3193{
1832 void (*cb)(int revents, void *arg) = once->cb; 3194 void (*cb)(int revents, void *arg) = once->cb;
1833 void *arg = once->arg; 3195 void *arg = once->arg;
1834 3196
1835 ev_io_stop (EV_A_ &once->io); 3197 ev_io_stop (EV_A_ &once->io);
1836 ev_timer_stop (EV_A_ &once->to); 3198 ev_timer_stop (EV_A_ &once->to);
1837 ev_free (once); 3199 ev_free (once);
1838 3200
1839 cb (revents, arg); 3201 cb (revents, arg);
1840} 3202}
1841 3203
1842static void 3204static void
1843once_cb_io (EV_P_ ev_io *w, int revents) 3205once_cb_io (EV_P_ ev_io *w, int revents)
1844{ 3206{
1845 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3207 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3208
3209 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
1846} 3210}
1847 3211
1848static void 3212static void
1849once_cb_to (EV_P_ ev_timer *w, int revents) 3213once_cb_to (EV_P_ ev_timer *w, int revents)
1850{ 3214{
1851 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3215 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3216
3217 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
1852} 3218}
1853 3219
1854void 3220void
1855ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3221ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1856{ 3222{
… …
1878 ev_timer_set (&once->to, timeout, 0.); 3244 ev_timer_set (&once->to, timeout, 0.);
1879 ev_timer_start (EV_A_ &once->to); 3245 ev_timer_start (EV_A_ &once->to);
1880 } 3246 }
1881} 3247}
1882 3248
3249/*****************************************************************************/
3250
3251#if EV_WALK_ENABLE
3252void
3253ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3254{
3255 int i, j;
3256 ev_watcher_list *wl, *wn;
3257
3258 if (types & (EV_IO | EV_EMBED))
3259 for (i = 0; i < anfdmax; ++i)
3260 for (wl = anfds [i].head; wl; )
3261 {
3262 wn = wl->next;
3263
3264#if EV_EMBED_ENABLE
3265 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3266 {
3267 if (types & EV_EMBED)
3268 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3269 }
3270 else
3271#endif
3272#if EV_USE_INOTIFY
3273 if (ev_cb ((ev_io *)wl) == infy_cb)
3274 ;
3275 else
3276#endif
3277 if ((ev_io *)wl != &pipe_w)
3278 if (types & EV_IO)
3279 cb (EV_A_ EV_IO, wl);
3280
3281 wl = wn;
3282 }
3283
3284 if (types & (EV_TIMER | EV_STAT))
3285 for (i = timercnt + HEAP0; i-- > HEAP0; )
3286#if EV_STAT_ENABLE
3287 /*TODO: timer is not always active*/
3288 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3289 {
3290 if (types & EV_STAT)
3291 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3292 }
3293 else
3294#endif
3295 if (types & EV_TIMER)
3296 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3297
3298#if EV_PERIODIC_ENABLE
3299 if (types & EV_PERIODIC)
3300 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3301 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3302#endif
3303
3304#if EV_IDLE_ENABLE
3305 if (types & EV_IDLE)
3306 for (j = NUMPRI; i--; )
3307 for (i = idlecnt [j]; i--; )
3308 cb (EV_A_ EV_IDLE, idles [j][i]);
3309#endif
3310
3311#if EV_FORK_ENABLE
3312 if (types & EV_FORK)
3313 for (i = forkcnt; i--; )
3314 if (ev_cb (forks [i]) != embed_fork_cb)
3315 cb (EV_A_ EV_FORK, forks [i]);
3316#endif
3317
3318#if EV_ASYNC_ENABLE
3319 if (types & EV_ASYNC)
3320 for (i = asynccnt; i--; )
3321 cb (EV_A_ EV_ASYNC, asyncs [i]);
3322#endif
3323
3324 if (types & EV_PREPARE)
3325 for (i = preparecnt; i--; )
3326#if EV_EMBED_ENABLE
3327 if (ev_cb (prepares [i]) != embed_prepare_cb)
3328#endif
3329 cb (EV_A_ EV_PREPARE, prepares [i]);
3330
3331 if (types & EV_CHECK)
3332 for (i = checkcnt; i--; )
3333 cb (EV_A_ EV_CHECK, checks [i]);
3334
3335 if (types & EV_SIGNAL)
3336 for (i = 0; i < signalmax; ++i)
3337 for (wl = signals [i].head; wl; )
3338 {
3339 wn = wl->next;
3340 cb (EV_A_ EV_SIGNAL, wl);
3341 wl = wn;
3342 }
3343
3344 if (types & EV_CHILD)
3345 for (i = EV_PID_HASHSIZE; i--; )
3346 for (wl = childs [i]; wl; )
3347 {
3348 wn = wl->next;
3349 cb (EV_A_ EV_CHILD, wl);
3350 wl = wn;
3351 }
3352/* EV_STAT 0x00001000 /* stat data changed */
3353/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3354}
3355#endif
3356
3357#if EV_MULTIPLICITY
3358 #include "ev_wrap.h"
3359#endif
3360
1883#ifdef __cplusplus 3361#ifdef __cplusplus
1884} 3362}
1885#endif 3363#endif
1886 3364

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