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Comparing libev/ev.c (file contents):
Revision 1.163 by root, Wed Dec 5 13:54:36 2007 UTC vs.
Revision 1.291 by root, Mon Jun 29 04:44:18 2009 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * modification, are permitted provided that the following conditions are 8 * tion, are permitted provided that the following conditions are met:
9 * met: 9 *
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
25 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
26 * OF THE POSSIBILITY OF SUCH DAMAGE.
10 * 27 *
11 * * Redistributions of source code must retain the above copyright 28 * Alternatively, the contents of this file may be used under the terms of
12 * notice, this list of conditions and the following disclaimer. 29 * the GNU General Public License ("GPL") version 2 or any later version,
13 * 30 * in which case the provisions of the GPL are applicable instead of
14 * * Redistributions in binary form must reproduce the above 31 * the above. If you wish to allow the use of your version of this file
15 * copyright notice, this list of conditions and the following 32 * only under the terms of the GPL and not to allow others to use your
16 * disclaimer in the documentation and/or other materials provided 33 * version of this file under the BSD license, indicate your decision
17 * with the distribution. 34 * by deleting the provisions above and replace them with the notice
18 * 35 * and other provisions required by the GPL. If you do not delete the
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 36 * provisions above, a recipient may use your version of this file under
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 37 * either the BSD or the GPL.
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */ 38 */
31 39
32#ifdef __cplusplus 40#ifdef __cplusplus
33extern "C" { 41extern "C" {
34#endif 42#endif
35 43
44/* this big block deduces configuration from config.h */
36#ifndef EV_STANDALONE 45#ifndef EV_STANDALONE
37# ifdef EV_CONFIG_H 46# ifdef EV_CONFIG_H
38# include EV_CONFIG_H 47# include EV_CONFIG_H
39# else 48# else
40# include "config.h" 49# include "config.h"
41# endif 50# endif
42 51
52# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME
56# define EV_USE_REALTIME 0
57# endif
58# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1
60# endif
61# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL)
63# define EV_USE_CLOCK_SYSCALL 0
64# endif
65
43# if HAVE_CLOCK_GETTIME 66# if HAVE_CLOCK_GETTIME
44# ifndef EV_USE_MONOTONIC 67# ifndef EV_USE_MONOTONIC
45# define EV_USE_MONOTONIC 1 68# define EV_USE_MONOTONIC 1
46# endif 69# endif
47# ifndef EV_USE_REALTIME 70# ifndef EV_USE_REALTIME
48# define EV_USE_REALTIME 1 71# define EV_USE_REALTIME 0
49# endif 72# endif
50# else 73# else
51# ifndef EV_USE_MONOTONIC 74# ifndef EV_USE_MONOTONIC
52# define EV_USE_MONOTONIC 0 75# define EV_USE_MONOTONIC 0
53# endif 76# endif
54# ifndef EV_USE_REALTIME 77# ifndef EV_USE_REALTIME
55# define EV_USE_REALTIME 0 78# define EV_USE_REALTIME 0
79# endif
80# endif
81
82# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1
85# else
86# define EV_USE_NANOSLEEP 0
56# endif 87# endif
57# endif 88# endif
58 89
59# ifndef EV_USE_SELECT 90# ifndef EV_USE_SELECT
60# if HAVE_SELECT && HAVE_SYS_SELECT_H 91# if HAVE_SELECT && HAVE_SYS_SELECT_H
… …
102# else 133# else
103# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY 0
104# endif 135# endif
105# endif 136# endif
106 137
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
107#endif 146#endif
108 147
109#include <math.h> 148#include <math.h>
110#include <stdlib.h> 149#include <stdlib.h>
111#include <fcntl.h> 150#include <fcntl.h>
… …
129#ifndef _WIN32 168#ifndef _WIN32
130# include <sys/time.h> 169# include <sys/time.h>
131# include <sys/wait.h> 170# include <sys/wait.h>
132# include <unistd.h> 171# include <unistd.h>
133#else 172#else
173# include <io.h>
134# define WIN32_LEAN_AND_MEAN 174# define WIN32_LEAN_AND_MEAN
135# include <windows.h> 175# include <windows.h>
136# ifndef EV_SELECT_IS_WINSOCKET 176# ifndef EV_SELECT_IS_WINSOCKET
137# define EV_SELECT_IS_WINSOCKET 1 177# define EV_SELECT_IS_WINSOCKET 1
138# endif 178# endif
139#endif 179#endif
140 180
141/**/ 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
142 190
143#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
144# define EV_USE_MONOTONIC 0 195# define EV_USE_MONOTONIC 0
196# endif
145#endif 197#endif
146 198
147#ifndef EV_USE_REALTIME 199#ifndef EV_USE_REALTIME
148# 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
149#endif 209#endif
150 210
151#ifndef EV_USE_SELECT 211#ifndef EV_USE_SELECT
152# define EV_USE_SELECT 1 212# define EV_USE_SELECT 1
153#endif 213#endif
… …
159# define EV_USE_POLL 1 219# define EV_USE_POLL 1
160# endif 220# endif
161#endif 221#endif
162 222
163#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
164# define EV_USE_EPOLL 0 227# define EV_USE_EPOLL 0
228# endif
165#endif 229#endif
166 230
167#ifndef EV_USE_KQUEUE 231#ifndef EV_USE_KQUEUE
168# define EV_USE_KQUEUE 0 232# define EV_USE_KQUEUE 0
169#endif 233#endif
… …
171#ifndef EV_USE_PORT 235#ifndef EV_USE_PORT
172# define EV_USE_PORT 0 236# define EV_USE_PORT 0
173#endif 237#endif
174 238
175#ifndef EV_USE_INOTIFY 239#ifndef EV_USE_INOTIFY
240# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
241# define EV_USE_INOTIFY 1
242# else
176# define EV_USE_INOTIFY 0 243# define EV_USE_INOTIFY 0
244# endif
177#endif 245#endif
178 246
179#ifndef EV_PID_HASHSIZE 247#ifndef EV_PID_HASHSIZE
180# if EV_MINIMAL 248# if EV_MINIMAL
181# define EV_PID_HASHSIZE 1 249# define EV_PID_HASHSIZE 1
… …
190# else 258# else
191# define EV_INOTIFY_HASHSIZE 16 259# define EV_INOTIFY_HASHSIZE 16
192# endif 260# endif
193#endif 261#endif
194 262
195/**/ 263#ifndef EV_USE_EVENTFD
264# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265# define EV_USE_EVENTFD 1
266# else
267# define EV_USE_EVENTFD 0
268# endif
269#endif
270
271#if 0 /* debugging */
272# define EV_VERIFY 3
273# define EV_USE_4HEAP 1
274# define EV_HEAP_CACHE_AT 1
275#endif
276
277#ifndef EV_VERIFY
278# define EV_VERIFY !EV_MINIMAL
279#endif
280
281#ifndef EV_USE_4HEAP
282# define EV_USE_4HEAP !EV_MINIMAL
283#endif
284
285#ifndef EV_HEAP_CACHE_AT
286# define EV_HEAP_CACHE_AT !EV_MINIMAL
287#endif
288
289/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
290/* which makes programs even slower. might work on other unices, too. */
291#if EV_USE_CLOCK_SYSCALL
292# include <syscall.h>
293# ifdef SYS_clock_gettime
294# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
295# undef EV_USE_MONOTONIC
296# define EV_USE_MONOTONIC 1
297# else
298# undef EV_USE_CLOCK_SYSCALL
299# define EV_USE_CLOCK_SYSCALL 0
300# endif
301#endif
302
303/* this block fixes any misconfiguration where we know we run into trouble otherwise */
196 304
197#ifndef CLOCK_MONOTONIC 305#ifndef CLOCK_MONOTONIC
198# undef EV_USE_MONOTONIC 306# undef EV_USE_MONOTONIC
199# define EV_USE_MONOTONIC 0 307# define EV_USE_MONOTONIC 0
200#endif 308#endif
… …
202#ifndef CLOCK_REALTIME 310#ifndef CLOCK_REALTIME
203# undef EV_USE_REALTIME 311# undef EV_USE_REALTIME
204# define EV_USE_REALTIME 0 312# define EV_USE_REALTIME 0
205#endif 313#endif
206 314
315#if !EV_STAT_ENABLE
316# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0
318#endif
319
320#if !EV_USE_NANOSLEEP
321# ifndef _WIN32
322# include <sys/select.h>
323# endif
324#endif
325
326#if EV_USE_INOTIFY
327# include <sys/utsname.h>
328# include <sys/statfs.h>
329# include <sys/inotify.h>
330/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
331# ifndef IN_DONT_FOLLOW
332# undef EV_USE_INOTIFY
333# define EV_USE_INOTIFY 0
334# endif
335#endif
336
207#if EV_SELECT_IS_WINSOCKET 337#if EV_SELECT_IS_WINSOCKET
208# include <winsock.h> 338# include <winsock.h>
209#endif 339#endif
210 340
211#if !EV_STAT_ENABLE 341#if EV_USE_EVENTFD
212# define EV_USE_INOTIFY 0 342/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
343# include <stdint.h>
344# ifdef __cplusplus
345extern "C" {
213#endif 346# endif
214 347int eventfd (unsigned int initval, int flags);
215#if EV_USE_INOTIFY 348# ifdef __cplusplus
216# include <sys/inotify.h> 349}
350# endif
217#endif 351#endif
218 352
219/**/ 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 */
220 370
221#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) */
222#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) */
223/*#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 */
224 374
225#if __GNUC__ >= 3 375#if __GNUC__ >= 4
226# define expect(expr,value) __builtin_expect ((expr),(value)) 376# define expect(expr,value) __builtin_expect ((expr),(value))
227# define inline_size static inline /* inline for codesize */
228# if EV_MINIMAL
229# define noinline __attribute__ ((noinline)) 377# define noinline __attribute__ ((noinline))
230# define inline_speed static noinline
231# else
232# define noinline
233# define inline_speed static inline
234# endif
235#else 378#else
236# define expect(expr,value) (expr) 379# define expect(expr,value) (expr)
237# define inline_speed static
238# define inline_size static
239# define noinline 380# define noinline
381# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
382# define inline
383# endif
240#endif 384#endif
241 385
242#define expect_false(expr) expect ((expr) != 0, 0) 386#define expect_false(expr) expect ((expr) != 0, 0)
243#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
244 395
245#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
246#define ABSPRI(w) ((w)->priority - EV_MINPRI) 397#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
247 398
248#define EMPTY0 /* required for microsofts broken pseudo-c compiler */ 399#define EMPTY /* required for microsofts broken pseudo-c compiler */
249#define EMPTY2(a,b) /* used to suppress some warnings */ 400#define EMPTY2(a,b) /* used to suppress some warnings */
250 401
251typedef ev_watcher *W; 402typedef ev_watcher *W;
252typedef ev_watcher_list *WL; 403typedef ev_watcher_list *WL;
253typedef ev_watcher_time *WT; 404typedef ev_watcher_time *WT;
254 405
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
255static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 416static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
417#endif
256 418
257#ifdef _WIN32 419#ifdef _WIN32
258# include "ev_win32.c" 420# include "ev_win32.c"
259#endif 421#endif
260 422
… …
267{ 429{
268 syserr_cb = cb; 430 syserr_cb = cb;
269} 431}
270 432
271static void noinline 433static void noinline
272syserr (const char *msg) 434ev_syserr (const char *msg)
273{ 435{
274 if (!msg) 436 if (!msg)
275 msg = "(libev) system error"; 437 msg = "(libev) system error";
276 438
277 if (syserr_cb) 439 if (syserr_cb)
… …
281 perror (msg); 443 perror (msg);
282 abort (); 444 abort ();
283 } 445 }
284} 446}
285 447
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
286static void *(*alloc)(void *ptr, long size); 463static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
287 464
288void 465void
289ev_set_allocator (void *(*cb)(void *ptr, long size)) 466ev_set_allocator (void *(*cb)(void *ptr, long size))
290{ 467{
291 alloc = cb; 468 alloc = cb;
292} 469}
293 470
294inline_speed void * 471inline_speed void *
295ev_realloc (void *ptr, long size) 472ev_realloc (void *ptr, long size)
296{ 473{
297 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 474 ptr = alloc (ptr, size);
298 475
299 if (!ptr && size) 476 if (!ptr && size)
300 { 477 {
301 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 478 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
302 abort (); 479 abort ();
… …
308#define ev_malloc(size) ev_realloc (0, (size)) 485#define ev_malloc(size) ev_realloc (0, (size))
309#define ev_free(ptr) ev_realloc ((ptr), 0) 486#define ev_free(ptr) ev_realloc ((ptr), 0)
310 487
311/*****************************************************************************/ 488/*****************************************************************************/
312 489
490/* file descriptor info structure */
313typedef struct 491typedef struct
314{ 492{
315 WL head; 493 WL head;
316 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 */
317 unsigned char reify; 497 unsigned char unused;
498#if EV_USE_EPOLL
499 unsigned int egen; /* generation counter to counter epoll bugs */
500#endif
318#if EV_SELECT_IS_WINSOCKET 501#if EV_SELECT_IS_WINSOCKET
319 SOCKET handle; 502 SOCKET handle;
320#endif 503#endif
321} ANFD; 504} ANFD;
322 505
506/* stores the pending event set for a given watcher */
323typedef struct 507typedef struct
324{ 508{
325 W w; 509 W w;
326 int events; 510 int events; /* the pending event set for the given watcher */
327} ANPENDING; 511} ANPENDING;
328 512
329#if EV_USE_INOTIFY 513#if EV_USE_INOTIFY
514/* hash table entry per inotify-id */
330typedef struct 515typedef struct
331{ 516{
332 WL head; 517 WL head;
333} ANFS; 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)
334#endif 539#endif
335 540
336#if EV_MULTIPLICITY 541#if EV_MULTIPLICITY
337 542
338 struct ev_loop 543 struct ev_loop
… …
363 568
364ev_tstamp 569ev_tstamp
365ev_time (void) 570ev_time (void)
366{ 571{
367#if EV_USE_REALTIME 572#if EV_USE_REALTIME
573 if (expect_true (have_realtime))
574 {
368 struct timespec ts; 575 struct timespec ts;
369 clock_gettime (CLOCK_REALTIME, &ts); 576 clock_gettime (CLOCK_REALTIME, &ts);
370 return ts.tv_sec + ts.tv_nsec * 1e-9; 577 return ts.tv_sec + ts.tv_nsec * 1e-9;
371#else 578 }
579#endif
580
372 struct timeval tv; 581 struct timeval tv;
373 gettimeofday (&tv, 0); 582 gettimeofday (&tv, 0);
374 return tv.tv_sec + tv.tv_usec * 1e-6; 583 return tv.tv_sec + tv.tv_usec * 1e-6;
375#endif
376} 584}
377 585
378ev_tstamp inline_size 586inline_size ev_tstamp
379get_clock (void) 587get_clock (void)
380{ 588{
381#if EV_USE_MONOTONIC 589#if EV_USE_MONOTONIC
382 if (expect_true (have_monotonic)) 590 if (expect_true (have_monotonic))
383 { 591 {
… …
396{ 604{
397 return ev_rt_now; 605 return ev_rt_now;
398} 606}
399#endif 607#endif
400 608
401int inline_size 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
402array_nextsize (int elem, int cur, int cnt) 644array_nextsize (int elem, int cur, int cnt)
403{ 645{
404 int ncur = cur + 1; 646 int ncur = cur + 1;
405 647
406 do 648 do
407 ncur <<= 1; 649 ncur <<= 1;
408 while (cnt > ncur); 650 while (cnt > ncur);
409 651
410 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ 652 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
411 if (elem * ncur > 4096) 653 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
412 { 654 {
413 ncur *= elem; 655 ncur *= elem;
414 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; 656 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
415 ncur = ncur - sizeof (void *) * 4; 657 ncur = ncur - sizeof (void *) * 4;
416 ncur /= elem; 658 ncur /= elem;
417 } 659 }
418 660
419 return ncur; 661 return ncur;
420} 662}
421 663
422inline_speed void * 664static noinline void *
423array_realloc (int elem, void *base, int *cur, int cnt) 665array_realloc (int elem, void *base, int *cur, int cnt)
424{ 666{
425 *cur = array_nextsize (elem, *cur, cnt); 667 *cur = array_nextsize (elem, *cur, cnt);
426 return ev_realloc (base, elem * *cur); 668 return ev_realloc (base, elem * *cur);
427} 669}
670
671#define array_init_zero(base,count) \
672 memset ((void *)(base), 0, sizeof (*(base)) * (count))
428 673
429#define array_needsize(type,base,cur,cnt,init) \ 674#define array_needsize(type,base,cur,cnt,init) \
430 if (expect_false ((cnt) > (cur))) \ 675 if (expect_false ((cnt) > (cur))) \
431 { \ 676 { \
432 int ocur_ = (cur); \ 677 int ocur_ = (cur); \
… …
444 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 689 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
445 } 690 }
446#endif 691#endif
447 692
448#define array_free(stem, idx) \ 693#define array_free(stem, idx) \
449 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
450 695
451/*****************************************************************************/ 696/*****************************************************************************/
697
698/* dummy callback for pending events */
699static void noinline
700pendingcb (EV_P_ ev_prepare *w, int revents)
701{
702}
452 703
453void noinline 704void noinline
454ev_feed_event (EV_P_ void *w, int revents) 705ev_feed_event (EV_P_ void *w, int revents)
455{ 706{
456 W w_ = (W)w; 707 W w_ = (W)w;
708 int pri = ABSPRI (w_);
457 709
458 if (expect_false (w_->pending)) 710 if (expect_false (w_->pending))
711 pendings [pri][w_->pending - 1].events |= revents;
712 else
459 { 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_;
460 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; 717 pendings [pri][w_->pending - 1].events = revents;
461 return;
462 } 718 }
463
464 w_->pending = ++pendingcnt [ABSPRI (w_)];
465 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
466 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
467 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
468} 719}
469 720
470void inline_size 721inline_speed void
722feed_reverse (EV_P_ W w)
723{
724 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
725 rfeeds [rfeedcnt++] = w;
726}
727
728inline_size void
729feed_reverse_done (EV_P_ int revents)
730{
731 do
732 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
733 while (rfeedcnt);
734}
735
736inline_speed void
471queue_events (EV_P_ W *events, int eventcnt, int type) 737queue_events (EV_P_ W *events, int eventcnt, int type)
472{ 738{
473 int i; 739 int i;
474 740
475 for (i = 0; i < eventcnt; ++i) 741 for (i = 0; i < eventcnt; ++i)
476 ev_feed_event (EV_A_ events [i], type); 742 ev_feed_event (EV_A_ events [i], type);
477} 743}
478 744
479/*****************************************************************************/ 745/*****************************************************************************/
480 746
481void inline_size 747inline_speed void
482anfds_init (ANFD *base, int count)
483{
484 while (count--)
485 {
486 base->head = 0;
487 base->events = EV_NONE;
488 base->reify = 0;
489
490 ++base;
491 }
492}
493
494void inline_speed
495fd_event (EV_P_ int fd, int revents) 748fd_event (EV_P_ int fd, int revents)
496{ 749{
497 ANFD *anfd = anfds + fd; 750 ANFD *anfd = anfds + fd;
498 ev_io *w; 751 ev_io *w;
499 752
… …
507} 760}
508 761
509void 762void
510ev_feed_fd_event (EV_P_ int fd, int revents) 763ev_feed_fd_event (EV_P_ int fd, int revents)
511{ 764{
765 if (fd >= 0 && fd < anfdmax)
512 fd_event (EV_A_ fd, revents); 766 fd_event (EV_A_ fd, revents);
513} 767}
514 768
515void inline_size 769/* make sure the external fd watch events are in-sync */
770/* with the kernel/libev internal state */
771inline_size void
516fd_reify (EV_P) 772fd_reify (EV_P)
517{ 773{
518 int i; 774 int i;
519 775
520 for (i = 0; i < fdchangecnt; ++i) 776 for (i = 0; i < fdchangecnt; ++i)
521 { 777 {
522 int fd = fdchanges [i]; 778 int fd = fdchanges [i];
523 ANFD *anfd = anfds + fd; 779 ANFD *anfd = anfds + fd;
524 ev_io *w; 780 ev_io *w;
525 781
526 int events = 0; 782 unsigned char events = 0;
527 783
528 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)
529 events |= w->events; 785 events |= (unsigned char)w->events;
530 786
531#if EV_SELECT_IS_WINSOCKET 787#if EV_SELECT_IS_WINSOCKET
532 if (events) 788 if (events)
533 { 789 {
534 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
535 anfd->handle = _get_osfhandle (fd); 794 anfd->handle = _get_osfhandle (fd);
795 #endif
536 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));
537 } 797 }
538#endif 798#endif
539 799
800 {
801 unsigned char o_events = anfd->events;
802 unsigned char o_reify = anfd->reify;
803
540 anfd->reify = 0; 804 anfd->reify = 0;
541
542 backend_modify (EV_A_ fd, anfd->events, events);
543 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 }
544 } 810 }
545 811
546 fdchangecnt = 0; 812 fdchangecnt = 0;
547} 813}
548 814
549void inline_size 815/* something about the given fd changed */
816inline_size void
550fd_change (EV_P_ int fd) 817fd_change (EV_P_ int fd, int flags)
551{ 818{
552 if (expect_false (anfds [fd].reify)) 819 unsigned char reify = anfds [fd].reify;
553 return;
554
555 anfds [fd].reify = 1; 820 anfds [fd].reify |= flags;
556 821
822 if (expect_true (!reify))
823 {
557 ++fdchangecnt; 824 ++fdchangecnt;
558 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 825 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
559 fdchanges [fdchangecnt - 1] = fd; 826 fdchanges [fdchangecnt - 1] = fd;
827 }
560} 828}
561 829
562void inline_speed 830/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
831inline_speed void
563fd_kill (EV_P_ int fd) 832fd_kill (EV_P_ int fd)
564{ 833{
565 ev_io *w; 834 ev_io *w;
566 835
567 while ((w = (ev_io *)anfds [fd].head)) 836 while ((w = (ev_io *)anfds [fd].head))
… …
569 ev_io_stop (EV_A_ w); 838 ev_io_stop (EV_A_ w);
570 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);
571 } 840 }
572} 841}
573 842
574int inline_size 843/* check whether the given fd is atcually valid, for error recovery */
844inline_size int
575fd_valid (int fd) 845fd_valid (int fd)
576{ 846{
577#ifdef _WIN32 847#ifdef _WIN32
578 return _get_osfhandle (fd) != -1; 848 return _get_osfhandle (fd) != -1;
579#else 849#else
… …
587{ 857{
588 int fd; 858 int fd;
589 859
590 for (fd = 0; fd < anfdmax; ++fd) 860 for (fd = 0; fd < anfdmax; ++fd)
591 if (anfds [fd].events) 861 if (anfds [fd].events)
592 if (!fd_valid (fd) == -1 && errno == EBADF) 862 if (!fd_valid (fd) && errno == EBADF)
593 fd_kill (EV_A_ fd); 863 fd_kill (EV_A_ fd);
594} 864}
595 865
596/* 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 */
597static void noinline 867static void noinline
… …
615 885
616 for (fd = 0; fd < anfdmax; ++fd) 886 for (fd = 0; fd < anfdmax; ++fd)
617 if (anfds [fd].events) 887 if (anfds [fd].events)
618 { 888 {
619 anfds [fd].events = 0; 889 anfds [fd].events = 0;
890 anfds [fd].emask = 0;
620 fd_change (EV_A_ fd); 891 fd_change (EV_A_ fd, EV__IOFDSET | 1);
621 } 892 }
622} 893}
623 894
624/*****************************************************************************/ 895/*****************************************************************************/
625 896
626void inline_speed 897/*
627upheap (WT *heap, int k) 898 * the heap functions want a real array index. array index 0 uis guaranteed to not
628{ 899 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
629 WT w = heap [k]; 900 * the branching factor of the d-tree.
901 */
630 902
631 while (k && heap [k >> 1]->at > w->at) 903/*
632 { 904 * at the moment we allow libev the luxury of two heaps,
633 heap [k] = heap [k >> 1]; 905 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
634 ((W)heap [k])->active = k + 1; 906 * which is more cache-efficient.
635 k >>= 1; 907 * the difference is about 5% with 50000+ watchers.
636 } 908 */
909#if EV_USE_4HEAP
637 910
638 heap [k] = w; 911#define DHEAP 4
639 ((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))
640 915
641} 916/* away from the root */
642 917inline_speed void
643void inline_speed
644downheap (WT *heap, int N, int k) 918downheap (ANHE *heap, int N, int k)
645{ 919{
646 WT w = heap [k]; 920 ANHE he = heap [k];
921 ANHE *E = heap + N + HEAP0;
647 922
648 while (k < (N >> 1)) 923 for (;;)
649 { 924 {
650 int j = k << 1; 925 ev_tstamp minat;
926 ANHE *minpos;
927 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
651 928
652 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 929 /* find minimum child */
930 if (expect_true (pos + DHEAP - 1 < E))
653 ++j; 931 {
654 932 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
655 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
656 break; 945 break;
657 946
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
658 heap [k] = heap [j]; 985 heap [k] = heap [c];
659 ((W)heap [k])->active = k + 1; 986 ev_active (ANHE_w (heap [k])) = k;
987
660 k = j; 988 k = c;
661 } 989 }
662 990
663 heap [k] = w; 991 heap [k] = he;
664 ((W)heap [k])->active = k + 1; 992 ev_active (ANHE_w (he)) = k;
665} 993}
994#endif
666 995
667void 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
668adjustheap (WT *heap, int N, int k) 1020adjustheap (ANHE *heap, int N, int k)
669{ 1021{
1022 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
670 upheap (heap, k); 1023 upheap (heap, k);
1024 else
671 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);
672} 1038}
673 1039
674/*****************************************************************************/ 1040/*****************************************************************************/
675 1041
1042/* associate signal watchers to a signal signal */
676typedef struct 1043typedef struct
677{ 1044{
678 WL head; 1045 WL head;
679 sig_atomic_t volatile gotsig; 1046 EV_ATOMIC_T gotsig;
680} ANSIG; 1047} ANSIG;
681 1048
682static ANSIG *signals; 1049static ANSIG *signals;
683static int signalmax; 1050static int signalmax;
684 1051
685static int sigpipe [2]; 1052static EV_ATOMIC_T gotsig;
686static sig_atomic_t volatile gotsig;
687static ev_io sigev;
688 1053
689void inline_size 1054/*****************************************************************************/
690signals_init (ANSIG *base, int count)
691{
692 while (count--)
693 {
694 base->head = 0;
695 base->gotsig = 0;
696 1055
697 ++base; 1056/* used to prepare libev internal fd's */
698 } 1057/* this is not fork-safe */
699} 1058inline_speed void
700
701static void
702sighandler (int signum)
703{
704#if _WIN32
705 signal (signum, sighandler);
706#endif
707
708 signals [signum - 1].gotsig = 1;
709
710 if (!gotsig)
711 {
712 int old_errno = errno;
713 gotsig = 1;
714 write (sigpipe [1], &signum, 1);
715 errno = old_errno;
716 }
717}
718
719void noinline
720ev_feed_signal_event (EV_P_ int signum)
721{
722 WL w;
723
724#if EV_MULTIPLICITY
725 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
726#endif
727
728 --signum;
729
730 if (signum < 0 || signum >= signalmax)
731 return;
732
733 signals [signum].gotsig = 0;
734
735 for (w = signals [signum].head; w; w = w->next)
736 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
737}
738
739static void
740sigcb (EV_P_ ev_io *iow, int revents)
741{
742 int signum;
743
744 read (sigpipe [0], &revents, 1);
745 gotsig = 0;
746
747 for (signum = signalmax; signum--; )
748 if (signals [signum].gotsig)
749 ev_feed_signal_event (EV_A_ signum + 1);
750}
751
752void inline_size
753fd_intern (int fd) 1059fd_intern (int fd)
754{ 1060{
755#ifdef _WIN32 1061#ifdef _WIN32
756 int arg = 1; 1062 unsigned long arg = 1;
757 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1063 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
758#else 1064#else
759 fcntl (fd, F_SETFD, FD_CLOEXEC); 1065 fcntl (fd, F_SETFD, FD_CLOEXEC);
760 fcntl (fd, F_SETFL, O_NONBLOCK); 1066 fcntl (fd, F_SETFL, O_NONBLOCK);
761#endif 1067#endif
762} 1068}
763 1069
764static void noinline 1070static void noinline
765siginit (EV_P) 1071evpipe_init (EV_P)
766{ 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
767 fd_intern (sigpipe [0]); 1088 fd_intern (evpipe [0]);
768 fd_intern (sigpipe [1]); 1089 fd_intern (evpipe [1]);
1090 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1091 }
769 1092
770 ev_io_set (&sigev, sigpipe [0], EV_READ);
771 ev_io_start (EV_A_ &sigev); 1093 ev_io_start (EV_A_ &pipe_w);
772 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
773} 1163}
774 1164
775/*****************************************************************************/ 1165/*****************************************************************************/
776 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
777static ev_child *childs [EV_PID_HASHSIZE]; 1204static WL childs [EV_PID_HASHSIZE];
778 1205
779#ifndef _WIN32 1206#ifndef _WIN32
780 1207
781static ev_signal childev; 1208static ev_signal childev;
782 1209
783void inline_speed 1210#ifndef WIFCONTINUED
1211# define WIFCONTINUED(status) 0
1212#endif
1213
1214/* handle a single child status event */
1215inline_speed void
784child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 1216child_reap (EV_P_ int chain, int pid, int status)
785{ 1217{
786 ev_child *w; 1218 ev_child *w;
1219 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
787 1220
788 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1221 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1222 {
789 if (w->pid == pid || !w->pid) 1223 if ((w->pid == pid || !w->pid)
1224 && (!traced || (w->flags & 1)))
790 { 1225 {
791 ev_priority (w) = ev_priority (sw); /* need to do it *now* */ 1226 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
792 w->rpid = pid; 1227 w->rpid = pid;
793 w->rstatus = status; 1228 w->rstatus = status;
794 ev_feed_event (EV_A_ (W)w, EV_CHILD); 1229 ev_feed_event (EV_A_ (W)w, EV_CHILD);
795 } 1230 }
1231 }
796} 1232}
797 1233
798#ifndef WCONTINUED 1234#ifndef WCONTINUED
799# define WCONTINUED 0 1235# define WCONTINUED 0
800#endif 1236#endif
801 1237
1238/* called on sigchld etc., calls waitpid */
802static void 1239static void
803childcb (EV_P_ ev_signal *sw, int revents) 1240childcb (EV_P_ ev_signal *sw, int revents)
804{ 1241{
805 int pid, status; 1242 int pid, status;
806 1243
… …
809 if (!WCONTINUED 1246 if (!WCONTINUED
810 || errno != EINVAL 1247 || errno != EINVAL
811 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) 1248 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
812 return; 1249 return;
813 1250
814 /* 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 */
815 /* 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 */
816 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1253 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
817 1254
818 child_reap (EV_A_ sw, pid, pid, status); 1255 child_reap (EV_A_ pid, pid, status);
819 if (EV_PID_HASHSIZE > 1) 1256 if (EV_PID_HASHSIZE > 1)
820 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 */
821} 1258}
822 1259
823#endif 1260#endif
824 1261
825/*****************************************************************************/ 1262/*****************************************************************************/
… …
887 /* kqueue is borked on everything but netbsd apparently */ 1324 /* kqueue is borked on everything but netbsd apparently */
888 /* 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 */
889 flags &= ~EVBACKEND_KQUEUE; 1326 flags &= ~EVBACKEND_KQUEUE;
890#endif 1327#endif
891#ifdef __APPLE__ 1328#ifdef __APPLE__
892 // flags &= ~EVBACKEND_KQUEUE; for documentation 1329 /* only select works correctly on that "unix-certified" platform */
893 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 */
894#endif 1332#endif
895 1333
896 return flags; 1334 return flags;
897} 1335}
898 1336
899unsigned int 1337unsigned int
900ev_embeddable_backends (void) 1338ev_embeddable_backends (void)
901{ 1339{
902 return EVBACKEND_EPOLL 1340 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
903 | EVBACKEND_KQUEUE 1341
904 | 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;
905} 1347}
906 1348
907unsigned int 1349unsigned int
908ev_backend (EV_P) 1350ev_backend (EV_P)
909{ 1351{
… …
914ev_loop_count (EV_P) 1356ev_loop_count (EV_P)
915{ 1357{
916 return loop_count; 1358 return loop_count;
917} 1359}
918 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 */
919static void noinline 1374static void noinline
920loop_init (EV_P_ unsigned int flags) 1375loop_init (EV_P_ unsigned int flags)
921{ 1376{
922 if (!backend) 1377 if (!backend)
923 { 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
924#if EV_USE_MONOTONIC 1389#if EV_USE_MONOTONIC
1390 if (!have_monotonic)
925 { 1391 {
926 struct timespec ts; 1392 struct timespec ts;
1393
927 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1394 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
928 have_monotonic = 1; 1395 have_monotonic = 1;
929 } 1396 }
930#endif 1397#endif
931 1398
932 ev_rt_now = ev_time (); 1399 ev_rt_now = ev_time ();
933 mn_now = get_clock (); 1400 mn_now = get_clock ();
934 now_floor = mn_now; 1401 now_floor = mn_now;
935 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
936 1412
937 /* pid check not overridable via env */ 1413 /* pid check not overridable via env */
938#ifndef _WIN32 1414#ifndef _WIN32
939 if (flags & EVFLAG_FORKCHECK) 1415 if (flags & EVFLAG_FORKCHECK)
940 curpid = getpid (); 1416 curpid = getpid ();
… …
943 if (!(flags & EVFLAG_NOENV) 1419 if (!(flags & EVFLAG_NOENV)
944 && !enable_secure () 1420 && !enable_secure ()
945 && getenv ("LIBEV_FLAGS")) 1421 && getenv ("LIBEV_FLAGS"))
946 flags = atoi (getenv ("LIBEV_FLAGS")); 1422 flags = atoi (getenv ("LIBEV_FLAGS"));
947 1423
948 if (!(flags & 0x0000ffffUL)) 1424 if (!(flags & 0x0000ffffU))
949 flags |= ev_recommended_backends (); 1425 flags |= ev_recommended_backends ();
950
951 backend = 0;
952 backend_fd = -1;
953#if EV_USE_INOTIFY
954 fs_fd = -2;
955#endif
956 1426
957#if EV_USE_PORT 1427#if EV_USE_PORT
958 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1428 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
959#endif 1429#endif
960#if EV_USE_KQUEUE 1430#if EV_USE_KQUEUE
… …
968#endif 1438#endif
969#if EV_USE_SELECT 1439#if EV_USE_SELECT
970 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1440 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
971#endif 1441#endif
972 1442
1443 ev_prepare_init (&pending_w, pendingcb);
1444
973 ev_init (&sigev, sigcb); 1445 ev_init (&pipe_w, pipecb);
974 ev_set_priority (&sigev, EV_MAXPRI); 1446 ev_set_priority (&pipe_w, EV_MAXPRI);
975 } 1447 }
976} 1448}
977 1449
1450/* free up a loop structure */
978static void noinline 1451static void noinline
979loop_destroy (EV_P) 1452loop_destroy (EV_P)
980{ 1453{
981 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 }
982 1472
983#if EV_USE_INOTIFY 1473#if EV_USE_INOTIFY
984 if (fs_fd >= 0) 1474 if (fs_fd >= 0)
985 close (fs_fd); 1475 close (fs_fd);
986#endif 1476#endif
… …
1003#if EV_USE_SELECT 1493#if EV_USE_SELECT
1004 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 1494 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
1005#endif 1495#endif
1006 1496
1007 for (i = NUMPRI; i--; ) 1497 for (i = NUMPRI; i--; )
1498 {
1008 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;
1009 1506
1010 /* 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);
1011 array_free (fdchange, EMPTY0); 1509 array_free (fdchange, EMPTY);
1012 array_free (timer, EMPTY0); 1510 array_free (timer, EMPTY);
1013#if EV_PERIODIC_ENABLE 1511#if EV_PERIODIC_ENABLE
1014 array_free (periodic, EMPTY0); 1512 array_free (periodic, EMPTY);
1015#endif 1513#endif
1514#if EV_FORK_ENABLE
1016 array_free (idle, EMPTY0); 1515 array_free (fork, EMPTY);
1516#endif
1017 array_free (prepare, EMPTY0); 1517 array_free (prepare, EMPTY);
1018 array_free (check, EMPTY0); 1518 array_free (check, EMPTY);
1519#if EV_ASYNC_ENABLE
1520 array_free (async, EMPTY);
1521#endif
1019 1522
1020 backend = 0; 1523 backend = 0;
1021} 1524}
1022 1525
1526#if EV_USE_INOTIFY
1023void inline_size infy_fork (EV_P); 1527inline_size void infy_fork (EV_P);
1528#endif
1024 1529
1025void inline_size 1530inline_size void
1026loop_fork (EV_P) 1531loop_fork (EV_P)
1027{ 1532{
1028#if EV_USE_PORT 1533#if EV_USE_PORT
1029 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1534 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1030#endif 1535#endif
… …
1036#endif 1541#endif
1037#if EV_USE_INOTIFY 1542#if EV_USE_INOTIFY
1038 infy_fork (EV_A); 1543 infy_fork (EV_A);
1039#endif 1544#endif
1040 1545
1041 if (ev_is_active (&sigev)) 1546 if (ev_is_active (&pipe_w))
1042 { 1547 {
1043 /* 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
1044 1554
1045 ev_ref (EV_A); 1555 ev_ref (EV_A);
1046 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 {
1047 close (sigpipe [0]); 1565 close (evpipe [0]);
1048 close (sigpipe [1]); 1566 close (evpipe [1]);
1567 }
1049 1568
1050 while (pipe (sigpipe))
1051 syserr ("(libev) error creating pipe");
1052
1053 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);
1054 } 1572 }
1055 1573
1056 postfork = 0; 1574 postfork = 0;
1057} 1575}
1058 1576
1059#if EV_MULTIPLICITY 1577#if EV_MULTIPLICITY
1578
1060struct ev_loop * 1579struct ev_loop *
1061ev_loop_new (unsigned int flags) 1580ev_loop_new (unsigned int flags)
1062{ 1581{
1063 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));
1064 1583
… …
1080} 1599}
1081 1600
1082void 1601void
1083ev_loop_fork (EV_P) 1602ev_loop_fork (EV_P)
1084{ 1603{
1085 postfork = 1; 1604 postfork = 1; /* must be in line with ev_default_fork */
1086} 1605}
1087 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)
1088#endif 1702# endif
1703#endif
1704}
1705
1706#endif /* multiplicity */
1089 1707
1090#if EV_MULTIPLICITY 1708#if EV_MULTIPLICITY
1091struct ev_loop * 1709struct ev_loop *
1092ev_default_loop_init (unsigned int flags) 1710ev_default_loop_init (unsigned int flags)
1093#else 1711#else
1094int 1712int
1095ev_default_loop (unsigned int flags) 1713ev_default_loop (unsigned int flags)
1096#endif 1714#endif
1097{ 1715{
1098 if (sigpipe [0] == sigpipe [1])
1099 if (pipe (sigpipe))
1100 return 0;
1101
1102 if (!ev_default_loop_ptr) 1716 if (!ev_default_loop_ptr)
1103 { 1717 {
1104#if EV_MULTIPLICITY 1718#if EV_MULTIPLICITY
1105 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1719 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1106#else 1720#else
… …
1109 1723
1110 loop_init (EV_A_ flags); 1724 loop_init (EV_A_ flags);
1111 1725
1112 if (ev_backend (EV_A)) 1726 if (ev_backend (EV_A))
1113 { 1727 {
1114 siginit (EV_A);
1115
1116#ifndef _WIN32 1728#ifndef _WIN32
1117 ev_signal_init (&childev, childcb, SIGCHLD); 1729 ev_signal_init (&childev, childcb, SIGCHLD);
1118 ev_set_priority (&childev, EV_MAXPRI); 1730 ev_set_priority (&childev, EV_MAXPRI);
1119 ev_signal_start (EV_A_ &childev); 1731 ev_signal_start (EV_A_ &childev);
1120 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1732 ev_unref (EV_A); /* child watcher should not keep loop alive */
… …
1132{ 1744{
1133#if EV_MULTIPLICITY 1745#if EV_MULTIPLICITY
1134 struct ev_loop *loop = ev_default_loop_ptr; 1746 struct ev_loop *loop = ev_default_loop_ptr;
1135#endif 1747#endif
1136 1748
1749 ev_default_loop_ptr = 0;
1750
1137#ifndef _WIN32 1751#ifndef _WIN32
1138 ev_ref (EV_A); /* child watcher */ 1752 ev_ref (EV_A); /* child watcher */
1139 ev_signal_stop (EV_A_ &childev); 1753 ev_signal_stop (EV_A_ &childev);
1140#endif 1754#endif
1141 1755
1142 ev_ref (EV_A); /* signal watcher */
1143 ev_io_stop (EV_A_ &sigev);
1144
1145 close (sigpipe [0]); sigpipe [0] = 0;
1146 close (sigpipe [1]); sigpipe [1] = 0;
1147
1148 loop_destroy (EV_A); 1756 loop_destroy (EV_A);
1149} 1757}
1150 1758
1151void 1759void
1152ev_default_fork (void) 1760ev_default_fork (void)
1153{ 1761{
1154#if EV_MULTIPLICITY 1762#if EV_MULTIPLICITY
1155 struct ev_loop *loop = ev_default_loop_ptr; 1763 struct ev_loop *loop = ev_default_loop_ptr;
1156#endif 1764#endif
1157 1765
1158 if (backend) 1766 postfork = 1; /* must be in line with ev_loop_fork */
1159 postfork = 1;
1160} 1767}
1161 1768
1162/*****************************************************************************/ 1769/*****************************************************************************/
1163 1770
1164int inline_size 1771void
1165any_pending (EV_P) 1772ev_invoke (EV_P_ void *w, int revents)
1166{ 1773{
1167 int pri; 1774 EV_CB_INVOKE ((W)w, revents);
1168
1169 for (pri = NUMPRI; pri--; )
1170 if (pendingcnt [pri])
1171 return 1;
1172
1173 return 0;
1174} 1775}
1175 1776
1176void inline_speed 1777inline_speed void
1177call_pending (EV_P) 1778call_pending (EV_P)
1178{ 1779{
1179 int pri; 1780 int pri;
1180 1781
1181 for (pri = NUMPRI; pri--; ) 1782 for (pri = NUMPRI; pri--; )
1182 while (pendingcnt [pri]) 1783 while (pendingcnt [pri])
1183 { 1784 {
1184 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1785 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1185 1786
1186 if (expect_true (p->w))
1187 {
1188 /*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 */
1189 1789
1190 p->w->pending = 0; 1790 p->w->pending = 0;
1191 EV_CB_INVOKE (p->w, p->events); 1791 EV_CB_INVOKE (p->w, p->events);
1192 } 1792 EV_FREQUENT_CHECK;
1193 } 1793 }
1194} 1794}
1195 1795
1196void 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
1197timers_reify (EV_P) 1823timers_reify (EV_P)
1198{ 1824{
1825 EV_FREQUENT_CHECK;
1826
1199 while (timercnt && ((WT)timers [0])->at <= mn_now) 1827 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1200 { 1828 {
1201 ev_timer *w = timers [0]; 1829 do
1202
1203 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1204
1205 /* first reschedule or stop timer */
1206 if (w->repeat)
1207 { 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
1208 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.));
1209 1843
1210 ((WT)w)->at += w->repeat; 1844 ANHE_at_cache (timers [HEAP0]);
1211 if (((WT)w)->at < mn_now)
1212 ((WT)w)->at = mn_now;
1213
1214 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);
1215 } 1852 }
1216 else 1853 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1217 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1218 1854
1219 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1855 feed_reverse_done (EV_A_ EV_TIMEOUT);
1220 } 1856 }
1221} 1857}
1222 1858
1223#if EV_PERIODIC_ENABLE 1859#if EV_PERIODIC_ENABLE
1224void inline_size 1860/* make periodics pending */
1861inline_size void
1225periodics_reify (EV_P) 1862periodics_reify (EV_P)
1226{ 1863{
1864 EV_FREQUENT_CHECK;
1865
1227 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1866 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1228 { 1867 {
1229 ev_periodic *w = periodics [0]; 1868 int feed_count = 0;
1230 1869
1231 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 1870 do
1232
1233 /* first reschedule or stop timer */
1234 if (w->reschedule_cb)
1235 { 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 {
1236 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1879 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1880
1237 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]);
1238 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);
1239 } 1910 }
1240 else if (w->interval) 1911 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1241 {
1242 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
1243 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1244 downheap ((WT *)periodics, periodiccnt, 0);
1245 }
1246 else
1247 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1248 1912
1249 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1913 feed_reverse_done (EV_A_ EV_PERIODIC);
1250 } 1914 }
1251} 1915}
1252 1916
1917/* simply recalculate all periodics */
1918/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1253static void noinline 1919static void noinline
1254periodics_reschedule (EV_P) 1920periodics_reschedule (EV_P)
1255{ 1921{
1256 int i; 1922 int i;
1257 1923
1258 /* adjust periodics after time jump */ 1924 /* adjust periodics after time jump */
1259 for (i = 0; i < periodiccnt; ++i) 1925 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1260 { 1926 {
1261 ev_periodic *w = periodics [i]; 1927 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1262 1928
1263 if (w->reschedule_cb) 1929 if (w->reschedule_cb)
1264 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1930 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1265 else if (w->interval) 1931 else if (w->interval)
1266 ((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)
1267 } 1948 {
1268 1949 ANHE *he = timers + i + HEAP0;
1269 /* now rebuild the heap */ 1950 ANHE_w (*he)->at += adjust;
1270 for (i = periodiccnt >> 1; i--; ) 1951 ANHE_at_cache (*he);
1271 downheap ((WT *)periodics, periodiccnt, i); 1952 }
1272} 1953}
1273#endif
1274 1954
1275int inline_size 1955/* fetch new monotonic and realtime times from the kernel */
1276time_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)
1277{ 1959{
1960#if EV_USE_MONOTONIC
1961 if (expect_true (have_monotonic))
1962 {
1963 int i;
1964 ev_tstamp odiff = rtmn_diff;
1965
1278 mn_now = get_clock (); 1966 mn_now = get_clock ();
1279 1967
1968 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1969 /* interpolate in the meantime */
1280 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1970 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1281 { 1971 {
1282 ev_rt_now = rtmn_diff + mn_now; 1972 ev_rt_now = rtmn_diff + mn_now;
1283 return 0; 1973 return;
1284 } 1974 }
1285 else 1975
1286 {
1287 now_floor = mn_now; 1976 now_floor = mn_now;
1288 ev_rt_now = ev_time (); 1977 ev_rt_now = ev_time ();
1289 return 1;
1290 }
1291}
1292 1978
1293void inline_size 1979 /* loop a few times, before making important decisions.
1294time_update (EV_P) 1980 * on the choice of "4": one iteration isn't enough,
1295{ 1981 * in case we get preempted during the calls to
1296 int i; 1982 * ev_time and get_clock. a second call is almost guaranteed
1297 1983 * to succeed in that case, though. and looping a few more times
1298#if EV_USE_MONOTONIC 1984 * doesn't hurt either as we only do this on time-jumps or
1299 if (expect_true (have_monotonic)) 1985 * in the unlikely event of having been preempted here.
1300 { 1986 */
1301 if (time_update_monotonic (EV_A)) 1987 for (i = 4; --i; )
1302 { 1988 {
1303 ev_tstamp odiff = rtmn_diff;
1304
1305 /* loop a few times, before making important decisions.
1306 * on the choice of "4": one iteration isn't enough,
1307 * in case we get preempted during the calls to
1308 * ev_time and get_clock. a second call is almost guaranteed
1309 * to succeed in that case, though. and looping a few more times
1310 * doesn't hurt either as we only do this on time-jumps or
1311 * in the unlikely event of having been preempted here.
1312 */
1313 for (i = 4; --i; )
1314 {
1315 rtmn_diff = ev_rt_now - mn_now; 1989 rtmn_diff = ev_rt_now - mn_now;
1316 1990
1317 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1991 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1318 return; /* all is well */ 1992 return; /* all is well */
1319 1993
1320 ev_rt_now = ev_time (); 1994 ev_rt_now = ev_time ();
1321 mn_now = get_clock (); 1995 mn_now = get_clock ();
1322 now_floor = mn_now; 1996 now_floor = mn_now;
1323 } 1997 }
1324 1998
1999 /* no timer adjustment, as the monotonic clock doesn't jump */
2000 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1325# if EV_PERIODIC_ENABLE 2001# if EV_PERIODIC_ENABLE
1326 periodics_reschedule (EV_A); 2002 periodics_reschedule (EV_A);
1327# endif 2003# endif
1328 /* no timer adjustment, as the monotonic clock doesn't jump */
1329 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1330 }
1331 } 2004 }
1332 else 2005 else
1333#endif 2006#endif
1334 { 2007 {
1335 ev_rt_now = ev_time (); 2008 ev_rt_now = ev_time ();
1336 2009
1337 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))
1338 { 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);
1339#if EV_PERIODIC_ENABLE 2014#if EV_PERIODIC_ENABLE
1340 periodics_reschedule (EV_A); 2015 periodics_reschedule (EV_A);
1341#endif 2016#endif
1342
1343 /* adjust timers. this is easy, as the offset is the same for all of them */
1344 for (i = 0; i < timercnt; ++i)
1345 ((WT)timers [i])->at += ev_rt_now - mn_now;
1346 } 2017 }
1347 2018
1348 mn_now = ev_rt_now; 2019 mn_now = ev_rt_now;
1349 } 2020 }
1350} 2021}
1351 2022
1352void
1353ev_ref (EV_P)
1354{
1355 ++activecnt;
1356}
1357
1358void
1359ev_unref (EV_P)
1360{
1361 --activecnt;
1362}
1363
1364static int loop_done; 2023static int loop_done;
1365 2024
1366void 2025void
1367ev_loop (EV_P_ int flags) 2026ev_loop (EV_P_ int flags)
1368{ 2027{
1369 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 2028 loop_done = EVUNLOOP_CANCEL;
1370 ? EVUNLOOP_ONE
1371 : EVUNLOOP_CANCEL;
1372 2029
1373 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2030 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1374 2031
1375 do 2032 do
1376 { 2033 {
2034#if EV_VERIFY >= 2
2035 ev_loop_verify (EV_A);
2036#endif
2037
1377#ifndef _WIN32 2038#ifndef _WIN32
1378 if (expect_false (curpid)) /* penalise the forking check even more */ 2039 if (expect_false (curpid)) /* penalise the forking check even more */
1379 if (expect_false (getpid () != curpid)) 2040 if (expect_false (getpid () != curpid))
1380 { 2041 {
1381 curpid = getpid (); 2042 curpid = getpid ();
… …
1391 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2052 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1392 call_pending (EV_A); 2053 call_pending (EV_A);
1393 } 2054 }
1394#endif 2055#endif
1395 2056
1396 /* queue check watchers (and execute them) */ 2057 /* queue prepare watchers (and execute them) */
1397 if (expect_false (preparecnt)) 2058 if (expect_false (preparecnt))
1398 { 2059 {
1399 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2060 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1400 call_pending (EV_A); 2061 call_pending (EV_A);
1401 } 2062 }
1402 2063
1403 if (expect_false (!activecnt))
1404 break;
1405
1406 /* we might have forked, so reify kernel state if necessary */ 2064 /* we might have forked, so reify kernel state if necessary */
1407 if (expect_false (postfork)) 2065 if (expect_false (postfork))
1408 loop_fork (EV_A); 2066 loop_fork (EV_A);
1409 2067
1410 /* update fd-related kernel structures */ 2068 /* update fd-related kernel structures */
1411 fd_reify (EV_A); 2069 fd_reify (EV_A);
1412 2070
1413 /* calculate blocking time */ 2071 /* calculate blocking time */
1414 { 2072 {
1415 ev_tstamp block; 2073 ev_tstamp waittime = 0.;
2074 ev_tstamp sleeptime = 0.;
1416 2075
1417 if (expect_false (flags & EVLOOP_NONBLOCK || idlecnt || !activecnt)) 2076 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1418 block = 0.; /* do not block at all */
1419 else
1420 { 2077 {
1421 /* update time to cancel out callback processing overhead */ 2078 /* update time to cancel out callback processing overhead */
1422#if EV_USE_MONOTONIC
1423 if (expect_true (have_monotonic))
1424 time_update_monotonic (EV_A); 2079 time_update (EV_A_ 1e100);
1425 else
1426#endif
1427 {
1428 ev_rt_now = ev_time ();
1429 mn_now = ev_rt_now;
1430 }
1431 2080
1432 block = MAX_BLOCKTIME; 2081 waittime = MAX_BLOCKTIME;
1433 2082
1434 if (timercnt) 2083 if (timercnt)
1435 { 2084 {
1436 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 2085 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1437 if (block > to) block = to; 2086 if (waittime > to) waittime = to;
1438 } 2087 }
1439 2088
1440#if EV_PERIODIC_ENABLE 2089#if EV_PERIODIC_ENABLE
1441 if (periodiccnt) 2090 if (periodiccnt)
1442 { 2091 {
1443 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;
1444 if (block > to) block = to; 2093 if (waittime > to) waittime = to;
1445 } 2094 }
1446#endif 2095#endif
1447 2096
1448 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 }
1449 } 2110 }
1450 2111
1451 ++loop_count; 2112 ++loop_count;
1452 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);
1453 } 2117 }
1454
1455 /* update ev_rt_now, do magic */
1456 time_update (EV_A);
1457 2118
1458 /* queue pending timers and reschedule them */ 2119 /* queue pending timers and reschedule them */
1459 timers_reify (EV_A); /* relative timers called last */ 2120 timers_reify (EV_A); /* relative timers called last */
1460#if EV_PERIODIC_ENABLE 2121#if EV_PERIODIC_ENABLE
1461 periodics_reify (EV_A); /* absolute timers called first */ 2122 periodics_reify (EV_A); /* absolute timers called first */
1462#endif 2123#endif
1463 2124
2125#if EV_IDLE_ENABLE
1464 /* queue idle watchers unless other events are pending */ 2126 /* queue idle watchers unless other events are pending */
1465 if (idlecnt && !any_pending (EV_A)) 2127 idle_reify (EV_A);
1466 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 2128#endif
1467 2129
1468 /* queue check watchers, to be executed first */ 2130 /* queue check watchers, to be executed first */
1469 if (expect_false (checkcnt)) 2131 if (expect_false (checkcnt))
1470 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2132 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1471 2133
1472 call_pending (EV_A); 2134 call_pending (EV_A);
1473
1474 } 2135 }
1475 while (expect_true (activecnt && !loop_done)); 2136 while (expect_true (
2137 activecnt
2138 && !loop_done
2139 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2140 ));
1476 2141
1477 if (loop_done == EVUNLOOP_ONE) 2142 if (loop_done == EVUNLOOP_ONE)
1478 loop_done = EVUNLOOP_CANCEL; 2143 loop_done = EVUNLOOP_CANCEL;
1479} 2144}
1480 2145
… …
1482ev_unloop (EV_P_ int how) 2147ev_unloop (EV_P_ int how)
1483{ 2148{
1484 loop_done = how; 2149 loop_done = how;
1485} 2150}
1486 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
1487/*****************************************************************************/ 2189/*****************************************************************************/
2190/* singly-linked list management, used when the expected list length is short */
1488 2191
1489void inline_size 2192inline_size void
1490wlist_add (WL *head, WL elem) 2193wlist_add (WL *head, WL elem)
1491{ 2194{
1492 elem->next = *head; 2195 elem->next = *head;
1493 *head = elem; 2196 *head = elem;
1494} 2197}
1495 2198
1496void inline_size 2199inline_size void
1497wlist_del (WL *head, WL elem) 2200wlist_del (WL *head, WL elem)
1498{ 2201{
1499 while (*head) 2202 while (*head)
1500 { 2203 {
1501 if (*head == elem) 2204 if (*head == elem)
… …
1506 2209
1507 head = &(*head)->next; 2210 head = &(*head)->next;
1508 } 2211 }
1509} 2212}
1510 2213
1511void inline_speed 2214/* internal, faster, version of ev_clear_pending */
2215inline_speed void
1512ev_clear_pending (EV_P_ W w) 2216clear_pending (EV_P_ W w)
1513{ 2217{
1514 if (w->pending) 2218 if (w->pending)
1515 { 2219 {
1516 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2220 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1517 w->pending = 0; 2221 w->pending = 0;
1518 } 2222 }
1519} 2223}
1520 2224
1521void 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
1522ev_start (EV_P_ W w, int active) 2252ev_start (EV_P_ W w, int active)
1523{ 2253{
1524 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 2254 pri_adjust (EV_A_ w);
1525 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1526
1527 w->active = active; 2255 w->active = active;
1528 ev_ref (EV_A); 2256 ev_ref (EV_A);
1529} 2257}
1530 2258
1531void inline_size 2259inline_size void
1532ev_stop (EV_P_ W w) 2260ev_stop (EV_P_ W w)
1533{ 2261{
1534 ev_unref (EV_A); 2262 ev_unref (EV_A);
1535 w->active = 0; 2263 w->active = 0;
1536} 2264}
1537 2265
1538/*****************************************************************************/ 2266/*****************************************************************************/
1539 2267
1540void 2268void noinline
1541ev_io_start (EV_P_ ev_io *w) 2269ev_io_start (EV_P_ ev_io *w)
1542{ 2270{
1543 int fd = w->fd; 2271 int fd = w->fd;
1544 2272
1545 if (expect_false (ev_is_active (w))) 2273 if (expect_false (ev_is_active (w)))
1546 return; 2274 return;
1547 2275
1548 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;
1549 2280
1550 ev_start (EV_A_ (W)w, 1); 2281 ev_start (EV_A_ (W)w, 1);
1551 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2282 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1552 wlist_add ((WL *)&anfds[fd].head, (WL)w); 2283 wlist_add (&anfds[fd].head, (WL)w);
1553 2284
1554 fd_change (EV_A_ fd); 2285 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
1555} 2286 w->events &= ~EV__IOFDSET;
1556 2287
1557void 2288 EV_FREQUENT_CHECK;
2289}
2290
2291void noinline
1558ev_io_stop (EV_P_ ev_io *w) 2292ev_io_stop (EV_P_ ev_io *w)
1559{ 2293{
1560 ev_clear_pending (EV_A_ (W)w); 2294 clear_pending (EV_A_ (W)w);
1561 if (expect_false (!ev_is_active (w))) 2295 if (expect_false (!ev_is_active (w)))
1562 return; 2296 return;
1563 2297
1564 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));
1565 2299
2300 EV_FREQUENT_CHECK;
2301
1566 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 2302 wlist_del (&anfds[w->fd].head, (WL)w);
1567 ev_stop (EV_A_ (W)w); 2303 ev_stop (EV_A_ (W)w);
1568 2304
1569 fd_change (EV_A_ w->fd); 2305 fd_change (EV_A_ w->fd, 1);
1570}
1571 2306
1572void 2307 EV_FREQUENT_CHECK;
2308}
2309
2310void noinline
1573ev_timer_start (EV_P_ ev_timer *w) 2311ev_timer_start (EV_P_ ev_timer *w)
1574{ 2312{
1575 if (expect_false (ev_is_active (w))) 2313 if (expect_false (ev_is_active (w)))
1576 return; 2314 return;
1577 2315
1578 ((WT)w)->at += mn_now; 2316 ev_at (w) += mn_now;
1579 2317
1580 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.));
1581 2319
2320 EV_FREQUENT_CHECK;
2321
2322 ++timercnt;
1582 ev_start (EV_A_ (W)w, ++timercnt); 2323 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1583 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); 2324 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1584 timers [timercnt - 1] = w; 2325 ANHE_w (timers [ev_active (w)]) = (WT)w;
1585 upheap ((WT *)timers, timercnt - 1); 2326 ANHE_at_cache (timers [ev_active (w)]);
2327 upheap (timers, ev_active (w));
1586 2328
2329 EV_FREQUENT_CHECK;
2330
1587 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ 2331 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1588} 2332}
1589 2333
1590void 2334void noinline
1591ev_timer_stop (EV_P_ ev_timer *w) 2335ev_timer_stop (EV_P_ ev_timer *w)
1592{ 2336{
1593 ev_clear_pending (EV_A_ (W)w); 2337 clear_pending (EV_A_ (W)w);
1594 if (expect_false (!ev_is_active (w))) 2338 if (expect_false (!ev_is_active (w)))
1595 return; 2339 return;
1596 2340
1597 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2341 EV_FREQUENT_CHECK;
1598 2342
1599 { 2343 {
1600 int active = ((W)w)->active; 2344 int active = ev_active (w);
1601 2345
2346 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2347
2348 --timercnt;
2349
1602 if (expect_true (--active < --timercnt)) 2350 if (expect_true (active < timercnt + HEAP0))
1603 { 2351 {
1604 timers [active] = timers [timercnt]; 2352 timers [active] = timers [timercnt + HEAP0];
1605 adjustheap ((WT *)timers, timercnt, active); 2353 adjustheap (timers, timercnt, active);
1606 } 2354 }
1607 } 2355 }
1608 2356
1609 ((WT)w)->at -= mn_now; 2357 EV_FREQUENT_CHECK;
2358
2359 ev_at (w) -= mn_now;
1610 2360
1611 ev_stop (EV_A_ (W)w); 2361 ev_stop (EV_A_ (W)w);
1612} 2362}
1613 2363
1614void 2364void noinline
1615ev_timer_again (EV_P_ ev_timer *w) 2365ev_timer_again (EV_P_ ev_timer *w)
1616{ 2366{
2367 EV_FREQUENT_CHECK;
2368
1617 if (ev_is_active (w)) 2369 if (ev_is_active (w))
1618 { 2370 {
1619 if (w->repeat) 2371 if (w->repeat)
1620 { 2372 {
1621 ((WT)w)->at = mn_now + w->repeat; 2373 ev_at (w) = mn_now + w->repeat;
2374 ANHE_at_cache (timers [ev_active (w)]);
1622 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2375 adjustheap (timers, timercnt, ev_active (w));
1623 } 2376 }
1624 else 2377 else
1625 ev_timer_stop (EV_A_ w); 2378 ev_timer_stop (EV_A_ w);
1626 } 2379 }
1627 else if (w->repeat) 2380 else if (w->repeat)
1628 { 2381 {
1629 w->at = w->repeat; 2382 ev_at (w) = w->repeat;
1630 ev_timer_start (EV_A_ w); 2383 ev_timer_start (EV_A_ w);
1631 } 2384 }
2385
2386 EV_FREQUENT_CHECK;
1632} 2387}
1633 2388
1634#if EV_PERIODIC_ENABLE 2389#if EV_PERIODIC_ENABLE
1635void 2390void noinline
1636ev_periodic_start (EV_P_ ev_periodic *w) 2391ev_periodic_start (EV_P_ ev_periodic *w)
1637{ 2392{
1638 if (expect_false (ev_is_active (w))) 2393 if (expect_false (ev_is_active (w)))
1639 return; 2394 return;
1640 2395
1641 if (w->reschedule_cb) 2396 if (w->reschedule_cb)
1642 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2397 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1643 else if (w->interval) 2398 else if (w->interval)
1644 { 2399 {
1645 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.));
1646 /* 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 */
1647 ((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;
1648 } 2403 }
2404 else
2405 ev_at (w) = w->offset;
1649 2406
2407 EV_FREQUENT_CHECK;
2408
2409 ++periodiccnt;
1650 ev_start (EV_A_ (W)w, ++periodiccnt); 2410 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1651 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 2411 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1652 periodics [periodiccnt - 1] = w; 2412 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1653 upheap ((WT *)periodics, periodiccnt - 1); 2413 ANHE_at_cache (periodics [ev_active (w)]);
2414 upheap (periodics, ev_active (w));
1654 2415
2416 EV_FREQUENT_CHECK;
2417
1655 /*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));*/
1656} 2419}
1657 2420
1658void 2421void noinline
1659ev_periodic_stop (EV_P_ ev_periodic *w) 2422ev_periodic_stop (EV_P_ ev_periodic *w)
1660{ 2423{
1661 ev_clear_pending (EV_A_ (W)w); 2424 clear_pending (EV_A_ (W)w);
1662 if (expect_false (!ev_is_active (w))) 2425 if (expect_false (!ev_is_active (w)))
1663 return; 2426 return;
1664 2427
1665 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2428 EV_FREQUENT_CHECK;
1666 2429
1667 { 2430 {
1668 int active = ((W)w)->active; 2431 int active = ev_active (w);
1669 2432
2433 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2434
2435 --periodiccnt;
2436
1670 if (expect_true (--active < --periodiccnt)) 2437 if (expect_true (active < periodiccnt + HEAP0))
1671 { 2438 {
1672 periodics [active] = periodics [periodiccnt]; 2439 periodics [active] = periodics [periodiccnt + HEAP0];
1673 adjustheap ((WT *)periodics, periodiccnt, active); 2440 adjustheap (periodics, periodiccnt, active);
1674 } 2441 }
1675 } 2442 }
1676 2443
2444 EV_FREQUENT_CHECK;
2445
1677 ev_stop (EV_A_ (W)w); 2446 ev_stop (EV_A_ (W)w);
1678} 2447}
1679 2448
1680void 2449void noinline
1681ev_periodic_again (EV_P_ ev_periodic *w) 2450ev_periodic_again (EV_P_ ev_periodic *w)
1682{ 2451{
1683 /* TODO: use adjustheap and recalculation */ 2452 /* TODO: use adjustheap and recalculation */
1684 ev_periodic_stop (EV_A_ w); 2453 ev_periodic_stop (EV_A_ w);
1685 ev_periodic_start (EV_A_ w); 2454 ev_periodic_start (EV_A_ w);
… …
1688 2457
1689#ifndef SA_RESTART 2458#ifndef SA_RESTART
1690# define SA_RESTART 0 2459# define SA_RESTART 0
1691#endif 2460#endif
1692 2461
1693void 2462void noinline
1694ev_signal_start (EV_P_ ev_signal *w) 2463ev_signal_start (EV_P_ ev_signal *w)
1695{ 2464{
1696#if EV_MULTIPLICITY 2465#if EV_MULTIPLICITY
1697 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2466 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1698#endif 2467#endif
1699 if (expect_false (ev_is_active (w))) 2468 if (expect_false (ev_is_active (w)))
1700 return; 2469 return;
1701 2470
1702 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2471 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2472
2473 evpipe_init (EV_A);
2474
2475 EV_FREQUENT_CHECK;
2476
2477 {
2478#ifndef _WIN32
2479 sigset_t full, prev;
2480 sigfillset (&full);
2481 sigprocmask (SIG_SETMASK, &full, &prev);
2482#endif
2483
2484 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2485
2486#ifndef _WIN32
2487 sigprocmask (SIG_SETMASK, &prev, 0);
2488#endif
2489 }
1703 2490
1704 ev_start (EV_A_ (W)w, 1); 2491 ev_start (EV_A_ (W)w, 1);
1705 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1706 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 2492 wlist_add (&signals [w->signum - 1].head, (WL)w);
1707 2493
1708 if (!((WL)w)->next) 2494 if (!((WL)w)->next)
1709 { 2495 {
1710#if _WIN32 2496#if _WIN32
1711 signal (w->signum, sighandler); 2497 signal (w->signum, ev_sighandler);
1712#else 2498#else
1713 struct sigaction sa; 2499 struct sigaction sa;
1714 sa.sa_handler = sighandler; 2500 sa.sa_handler = ev_sighandler;
1715 sigfillset (&sa.sa_mask); 2501 sigfillset (&sa.sa_mask);
1716 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 */
1717 sigaction (w->signum, &sa, 0); 2503 sigaction (w->signum, &sa, 0);
1718#endif 2504#endif
1719 } 2505 }
1720}
1721 2506
1722void 2507 EV_FREQUENT_CHECK;
2508}
2509
2510void noinline
1723ev_signal_stop (EV_P_ ev_signal *w) 2511ev_signal_stop (EV_P_ ev_signal *w)
1724{ 2512{
1725 ev_clear_pending (EV_A_ (W)w); 2513 clear_pending (EV_A_ (W)w);
1726 if (expect_false (!ev_is_active (w))) 2514 if (expect_false (!ev_is_active (w)))
1727 return; 2515 return;
1728 2516
2517 EV_FREQUENT_CHECK;
2518
1729 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 2519 wlist_del (&signals [w->signum - 1].head, (WL)w);
1730 ev_stop (EV_A_ (W)w); 2520 ev_stop (EV_A_ (W)w);
1731 2521
1732 if (!signals [w->signum - 1].head) 2522 if (!signals [w->signum - 1].head)
1733 signal (w->signum, SIG_DFL); 2523 signal (w->signum, SIG_DFL);
2524
2525 EV_FREQUENT_CHECK;
1734} 2526}
1735 2527
1736void 2528void
1737ev_child_start (EV_P_ ev_child *w) 2529ev_child_start (EV_P_ ev_child *w)
1738{ 2530{
1739#if EV_MULTIPLICITY 2531#if EV_MULTIPLICITY
1740 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));
1741#endif 2533#endif
1742 if (expect_false (ev_is_active (w))) 2534 if (expect_false (ev_is_active (w)))
1743 return; 2535 return;
1744 2536
2537 EV_FREQUENT_CHECK;
2538
1745 ev_start (EV_A_ (W)w, 1); 2539 ev_start (EV_A_ (W)w, 1);
1746 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2540 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2541
2542 EV_FREQUENT_CHECK;
1747} 2543}
1748 2544
1749void 2545void
1750ev_child_stop (EV_P_ ev_child *w) 2546ev_child_stop (EV_P_ ev_child *w)
1751{ 2547{
1752 ev_clear_pending (EV_A_ (W)w); 2548 clear_pending (EV_A_ (W)w);
1753 if (expect_false (!ev_is_active (w))) 2549 if (expect_false (!ev_is_active (w)))
1754 return; 2550 return;
1755 2551
2552 EV_FREQUENT_CHECK;
2553
1756 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2554 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1757 ev_stop (EV_A_ (W)w); 2555 ev_stop (EV_A_ (W)w);
2556
2557 EV_FREQUENT_CHECK;
1758} 2558}
1759 2559
1760#if EV_STAT_ENABLE 2560#if EV_STAT_ENABLE
1761 2561
1762# ifdef _WIN32 2562# ifdef _WIN32
1763# undef lstat 2563# undef lstat
1764# define lstat(a,b) _stati64 (a,b) 2564# define lstat(a,b) _stati64 (a,b)
1765# endif 2565# endif
1766 2566
1767#define DEF_STAT_INTERVAL 5.0074891 2567#define DEF_STAT_INTERVAL 5.0074891
2568#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
1768#define MIN_STAT_INTERVAL 0.1074891 2569#define MIN_STAT_INTERVAL 0.1074891
1769 2570
1770static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2571static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1771 2572
1772#if EV_USE_INOTIFY 2573#if EV_USE_INOTIFY
1773# define EV_INOTIFY_BUFSIZE 8192 2574# define EV_INOTIFY_BUFSIZE 8192
… …
1777{ 2578{
1778 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); 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);
1779 2580
1780 if (w->wd < 0) 2581 if (w->wd < 0)
1781 { 2582 {
2583 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
1782 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2584 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1783 2585
1784 /* monitor some parent directory for speedup hints */ 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 */
1785 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2589 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1786 { 2590 {
1787 char path [4096]; 2591 char path [4096];
1788 strcpy (path, w->path); 2592 strcpy (path, w->path);
1789 2593
… …
1792 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2596 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1793 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2597 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1794 2598
1795 char *pend = strrchr (path, '/'); 2599 char *pend = strrchr (path, '/');
1796 2600
1797 if (!pend) 2601 if (!pend || pend == path)
1798 break; /* whoops, no '/', complain to your admin */ 2602 break;
1799 2603
1800 *pend = 0; 2604 *pend = 0;
1801 w->wd = inotify_add_watch (fs_fd, path, mask); 2605 w->wd = inotify_add_watch (fs_fd, path, mask);
1802 } 2606 }
1803 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2607 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1804 } 2608 }
1805 } 2609 }
1806 else
1807 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1808 2610
1809 if (w->wd >= 0) 2611 if (w->wd >= 0)
2612 {
1810 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 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 }
1811} 2632}
1812 2633
1813static void noinline 2634static void noinline
1814infy_del (EV_P_ ev_stat *w) 2635infy_del (EV_P_ ev_stat *w)
1815{ 2636{
… …
1829 2650
1830static void noinline 2651static void noinline
1831infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2652infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1832{ 2653{
1833 if (slot < 0) 2654 if (slot < 0)
1834 /* overflow, need to check for all hahs slots */ 2655 /* overflow, need to check for all hash slots */
1835 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2656 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1836 infy_wd (EV_A_ slot, wd, ev); 2657 infy_wd (EV_A_ slot, wd, ev);
1837 else 2658 else
1838 { 2659 {
1839 WL w_; 2660 WL w_;
… …
1845 2666
1846 if (w->wd == wd || wd == -1) 2667 if (w->wd == wd || wd == -1)
1847 { 2668 {
1848 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2669 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1849 { 2670 {
2671 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1850 w->wd = -1; 2672 w->wd = -1;
1851 infy_add (EV_A_ w); /* re-add, no matter what */ 2673 infy_add (EV_A_ w); /* re-add, no matter what */
1852 } 2674 }
1853 2675
1854 stat_timer_cb (EV_A_ &w->timer, 0); 2676 stat_timer_cb (EV_A_ &w->timer, 0);
… …
1867 2689
1868 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 2690 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1869 infy_wd (EV_A_ ev->wd, ev->wd, ev); 2691 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1870} 2692}
1871 2693
1872void inline_size 2694inline_size void
2695check_2625 (EV_P)
2696{
2697 /* kernels < 2.6.25 are borked
2698 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2699 */
2700 struct utsname buf;
2701 int major, minor, micro;
2702
2703 if (uname (&buf))
2704 return;
2705
2706 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2707 return;
2708
2709 if (major < 2
2710 || (major == 2 && minor < 6)
2711 || (major == 2 && minor == 6 && micro < 25))
2712 return;
2713
2714 fs_2625 = 1;
2715}
2716
2717inline_size void
1873infy_init (EV_P) 2718infy_init (EV_P)
1874{ 2719{
1875 if (fs_fd != -2) 2720 if (fs_fd != -2)
1876 return; 2721 return;
2722
2723 fs_fd = -1;
2724
2725 check_2625 (EV_A);
1877 2726
1878 fs_fd = inotify_init (); 2727 fs_fd = inotify_init ();
1879 2728
1880 if (fs_fd >= 0) 2729 if (fs_fd >= 0)
1881 { 2730 {
… …
1883 ev_set_priority (&fs_w, EV_MAXPRI); 2732 ev_set_priority (&fs_w, EV_MAXPRI);
1884 ev_io_start (EV_A_ &fs_w); 2733 ev_io_start (EV_A_ &fs_w);
1885 } 2734 }
1886} 2735}
1887 2736
1888void inline_size 2737inline_size void
1889infy_fork (EV_P) 2738infy_fork (EV_P)
1890{ 2739{
1891 int slot; 2740 int slot;
1892 2741
1893 if (fs_fd < 0) 2742 if (fs_fd < 0)
… …
1909 w->wd = -1; 2758 w->wd = -1;
1910 2759
1911 if (fs_fd >= 0) 2760 if (fs_fd >= 0)
1912 infy_add (EV_A_ w); /* re-add, no matter what */ 2761 infy_add (EV_A_ w); /* re-add, no matter what */
1913 else 2762 else
1914 ev_timer_start (EV_A_ &w->timer); 2763 ev_timer_again (EV_A_ &w->timer);
1915 } 2764 }
1916
1917 } 2765 }
1918} 2766}
1919 2767
2768#endif
2769
2770#ifdef _WIN32
2771# define EV_LSTAT(p,b) _stati64 (p, b)
2772#else
2773# define EV_LSTAT(p,b) lstat (p, b)
1920#endif 2774#endif
1921 2775
1922void 2776void
1923ev_stat_stat (EV_P_ ev_stat *w) 2777ev_stat_stat (EV_P_ ev_stat *w)
1924{ 2778{
… …
1951 || w->prev.st_atime != w->attr.st_atime 2805 || w->prev.st_atime != w->attr.st_atime
1952 || w->prev.st_mtime != w->attr.st_mtime 2806 || w->prev.st_mtime != w->attr.st_mtime
1953 || w->prev.st_ctime != w->attr.st_ctime 2807 || w->prev.st_ctime != w->attr.st_ctime
1954 ) { 2808 ) {
1955 #if EV_USE_INOTIFY 2809 #if EV_USE_INOTIFY
2810 if (fs_fd >= 0)
2811 {
1956 infy_del (EV_A_ w); 2812 infy_del (EV_A_ w);
1957 infy_add (EV_A_ w); 2813 infy_add (EV_A_ w);
1958 ev_stat_stat (EV_A_ w); /* avoid race... */ 2814 ev_stat_stat (EV_A_ w); /* avoid race... */
2815 }
1959 #endif 2816 #endif
1960 2817
1961 ev_feed_event (EV_A_ w, EV_STAT); 2818 ev_feed_event (EV_A_ w, EV_STAT);
1962 } 2819 }
1963} 2820}
… …
1966ev_stat_start (EV_P_ ev_stat *w) 2823ev_stat_start (EV_P_ ev_stat *w)
1967{ 2824{
1968 if (expect_false (ev_is_active (w))) 2825 if (expect_false (ev_is_active (w)))
1969 return; 2826 return;
1970 2827
1971 /* since we use memcmp, we need to clear any padding data etc. */
1972 memset (&w->prev, 0, sizeof (ev_statdata));
1973 memset (&w->attr, 0, sizeof (ev_statdata));
1974
1975 ev_stat_stat (EV_A_ w); 2828 ev_stat_stat (EV_A_ w);
1976 2829
2830 if (w->interval < MIN_STAT_INTERVAL && w->interval)
1977 if (w->interval < MIN_STAT_INTERVAL) 2831 w->interval = MIN_STAT_INTERVAL;
1978 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
1979 2832
1980 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);
1981 ev_set_priority (&w->timer, ev_priority (w)); 2834 ev_set_priority (&w->timer, ev_priority (w));
1982 2835
1983#if EV_USE_INOTIFY 2836#if EV_USE_INOTIFY
1984 infy_init (EV_A); 2837 infy_init (EV_A);
1985 2838
1986 if (fs_fd >= 0) 2839 if (fs_fd >= 0)
1987 infy_add (EV_A_ w); 2840 infy_add (EV_A_ w);
1988 else 2841 else
1989#endif 2842#endif
1990 ev_timer_start (EV_A_ &w->timer); 2843 ev_timer_again (EV_A_ &w->timer);
1991 2844
1992 ev_start (EV_A_ (W)w, 1); 2845 ev_start (EV_A_ (W)w, 1);
2846
2847 EV_FREQUENT_CHECK;
1993} 2848}
1994 2849
1995void 2850void
1996ev_stat_stop (EV_P_ ev_stat *w) 2851ev_stat_stop (EV_P_ ev_stat *w)
1997{ 2852{
1998 ev_clear_pending (EV_A_ (W)w); 2853 clear_pending (EV_A_ (W)w);
1999 if (expect_false (!ev_is_active (w))) 2854 if (expect_false (!ev_is_active (w)))
2000 return; 2855 return;
2001 2856
2857 EV_FREQUENT_CHECK;
2858
2002#if EV_USE_INOTIFY 2859#if EV_USE_INOTIFY
2003 infy_del (EV_A_ w); 2860 infy_del (EV_A_ w);
2004#endif 2861#endif
2005 ev_timer_stop (EV_A_ &w->timer); 2862 ev_timer_stop (EV_A_ &w->timer);
2006 2863
2007 ev_stop (EV_A_ (W)w); 2864 ev_stop (EV_A_ (W)w);
2008}
2009#endif
2010 2865
2866 EV_FREQUENT_CHECK;
2867}
2868#endif
2869
2870#if EV_IDLE_ENABLE
2011void 2871void
2012ev_idle_start (EV_P_ ev_idle *w) 2872ev_idle_start (EV_P_ ev_idle *w)
2013{ 2873{
2014 if (expect_false (ev_is_active (w))) 2874 if (expect_false (ev_is_active (w)))
2015 return; 2875 return;
2016 2876
2877 pri_adjust (EV_A_ (W)w);
2878
2879 EV_FREQUENT_CHECK;
2880
2881 {
2882 int active = ++idlecnt [ABSPRI (w)];
2883
2884 ++idleall;
2017 ev_start (EV_A_ (W)w, ++idlecnt); 2885 ev_start (EV_A_ (W)w, active);
2886
2018 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2); 2887 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2019 idles [idlecnt - 1] = w; 2888 idles [ABSPRI (w)][active - 1] = w;
2889 }
2890
2891 EV_FREQUENT_CHECK;
2020} 2892}
2021 2893
2022void 2894void
2023ev_idle_stop (EV_P_ ev_idle *w) 2895ev_idle_stop (EV_P_ ev_idle *w)
2024{ 2896{
2025 ev_clear_pending (EV_A_ (W)w); 2897 clear_pending (EV_A_ (W)w);
2026 if (expect_false (!ev_is_active (w))) 2898 if (expect_false (!ev_is_active (w)))
2027 return; 2899 return;
2028 2900
2901 EV_FREQUENT_CHECK;
2902
2029 { 2903 {
2030 int active = ((W)w)->active; 2904 int active = ev_active (w);
2031 idles [active - 1] = idles [--idlecnt]; 2905
2032 ((W)idles [active - 1])->active = active; 2906 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2907 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2908
2909 ev_stop (EV_A_ (W)w);
2910 --idleall;
2033 } 2911 }
2034 2912
2035 ev_stop (EV_A_ (W)w); 2913 EV_FREQUENT_CHECK;
2036} 2914}
2915#endif
2037 2916
2038void 2917void
2039ev_prepare_start (EV_P_ ev_prepare *w) 2918ev_prepare_start (EV_P_ ev_prepare *w)
2040{ 2919{
2041 if (expect_false (ev_is_active (w))) 2920 if (expect_false (ev_is_active (w)))
2042 return; 2921 return;
2922
2923 EV_FREQUENT_CHECK;
2043 2924
2044 ev_start (EV_A_ (W)w, ++preparecnt); 2925 ev_start (EV_A_ (W)w, ++preparecnt);
2045 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 2926 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2046 prepares [preparecnt - 1] = w; 2927 prepares [preparecnt - 1] = w;
2928
2929 EV_FREQUENT_CHECK;
2047} 2930}
2048 2931
2049void 2932void
2050ev_prepare_stop (EV_P_ ev_prepare *w) 2933ev_prepare_stop (EV_P_ ev_prepare *w)
2051{ 2934{
2052 ev_clear_pending (EV_A_ (W)w); 2935 clear_pending (EV_A_ (W)w);
2053 if (expect_false (!ev_is_active (w))) 2936 if (expect_false (!ev_is_active (w)))
2054 return; 2937 return;
2055 2938
2939 EV_FREQUENT_CHECK;
2940
2056 { 2941 {
2057 int active = ((W)w)->active; 2942 int active = ev_active (w);
2943
2058 prepares [active - 1] = prepares [--preparecnt]; 2944 prepares [active - 1] = prepares [--preparecnt];
2059 ((W)prepares [active - 1])->active = active; 2945 ev_active (prepares [active - 1]) = active;
2060 } 2946 }
2061 2947
2062 ev_stop (EV_A_ (W)w); 2948 ev_stop (EV_A_ (W)w);
2949
2950 EV_FREQUENT_CHECK;
2063} 2951}
2064 2952
2065void 2953void
2066ev_check_start (EV_P_ ev_check *w) 2954ev_check_start (EV_P_ ev_check *w)
2067{ 2955{
2068 if (expect_false (ev_is_active (w))) 2956 if (expect_false (ev_is_active (w)))
2069 return; 2957 return;
2958
2959 EV_FREQUENT_CHECK;
2070 2960
2071 ev_start (EV_A_ (W)w, ++checkcnt); 2961 ev_start (EV_A_ (W)w, ++checkcnt);
2072 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 2962 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2073 checks [checkcnt - 1] = w; 2963 checks [checkcnt - 1] = w;
2964
2965 EV_FREQUENT_CHECK;
2074} 2966}
2075 2967
2076void 2968void
2077ev_check_stop (EV_P_ ev_check *w) 2969ev_check_stop (EV_P_ ev_check *w)
2078{ 2970{
2079 ev_clear_pending (EV_A_ (W)w); 2971 clear_pending (EV_A_ (W)w);
2080 if (expect_false (!ev_is_active (w))) 2972 if (expect_false (!ev_is_active (w)))
2081 return; 2973 return;
2082 2974
2975 EV_FREQUENT_CHECK;
2976
2083 { 2977 {
2084 int active = ((W)w)->active; 2978 int active = ev_active (w);
2979
2085 checks [active - 1] = checks [--checkcnt]; 2980 checks [active - 1] = checks [--checkcnt];
2086 ((W)checks [active - 1])->active = active; 2981 ev_active (checks [active - 1]) = active;
2087 } 2982 }
2088 2983
2089 ev_stop (EV_A_ (W)w); 2984 ev_stop (EV_A_ (W)w);
2985
2986 EV_FREQUENT_CHECK;
2090} 2987}
2091 2988
2092#if EV_EMBED_ENABLE 2989#if EV_EMBED_ENABLE
2093void noinline 2990void noinline
2094ev_embed_sweep (EV_P_ ev_embed *w) 2991ev_embed_sweep (EV_P_ ev_embed *w)
2095{ 2992{
2096 ev_loop (w->loop, EVLOOP_NONBLOCK); 2993 ev_loop (w->other, EVLOOP_NONBLOCK);
2097} 2994}
2098 2995
2099static void 2996static void
2100embed_cb (EV_P_ ev_io *io, int revents) 2997embed_io_cb (EV_P_ ev_io *io, int revents)
2101{ 2998{
2102 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 2999 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2103 3000
2104 if (ev_cb (w)) 3001 if (ev_cb (w))
2105 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3002 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2106 else 3003 else
2107 ev_embed_sweep (loop, w); 3004 ev_loop (w->other, EVLOOP_NONBLOCK);
2108} 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
2109 3047
2110void 3048void
2111ev_embed_start (EV_P_ ev_embed *w) 3049ev_embed_start (EV_P_ ev_embed *w)
2112{ 3050{
2113 if (expect_false (ev_is_active (w))) 3051 if (expect_false (ev_is_active (w)))
2114 return; 3052 return;
2115 3053
2116 { 3054 {
2117 struct ev_loop *loop = w->loop; 3055 struct ev_loop *loop = w->other;
2118 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3056 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2119 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); 3057 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2120 } 3058 }
3059
3060 EV_FREQUENT_CHECK;
2121 3061
2122 ev_set_priority (&w->io, ev_priority (w)); 3062 ev_set_priority (&w->io, ev_priority (w));
2123 ev_io_start (EV_A_ &w->io); 3063 ev_io_start (EV_A_ &w->io);
2124 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
2125 ev_start (EV_A_ (W)w, 1); 3074 ev_start (EV_A_ (W)w, 1);
3075
3076 EV_FREQUENT_CHECK;
2126} 3077}
2127 3078
2128void 3079void
2129ev_embed_stop (EV_P_ ev_embed *w) 3080ev_embed_stop (EV_P_ ev_embed *w)
2130{ 3081{
2131 ev_clear_pending (EV_A_ (W)w); 3082 clear_pending (EV_A_ (W)w);
2132 if (expect_false (!ev_is_active (w))) 3083 if (expect_false (!ev_is_active (w)))
2133 return; 3084 return;
2134 3085
3086 EV_FREQUENT_CHECK;
3087
2135 ev_io_stop (EV_A_ &w->io); 3088 ev_io_stop (EV_A_ &w->io);
3089 ev_prepare_stop (EV_A_ &w->prepare);
3090 ev_fork_stop (EV_A_ &w->fork);
2136 3091
2137 ev_stop (EV_A_ (W)w); 3092 EV_FREQUENT_CHECK;
2138} 3093}
2139#endif 3094#endif
2140 3095
2141#if EV_FORK_ENABLE 3096#if EV_FORK_ENABLE
2142void 3097void
2143ev_fork_start (EV_P_ ev_fork *w) 3098ev_fork_start (EV_P_ ev_fork *w)
2144{ 3099{
2145 if (expect_false (ev_is_active (w))) 3100 if (expect_false (ev_is_active (w)))
2146 return; 3101 return;
3102
3103 EV_FREQUENT_CHECK;
2147 3104
2148 ev_start (EV_A_ (W)w, ++forkcnt); 3105 ev_start (EV_A_ (W)w, ++forkcnt);
2149 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3106 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2150 forks [forkcnt - 1] = w; 3107 forks [forkcnt - 1] = w;
3108
3109 EV_FREQUENT_CHECK;
2151} 3110}
2152 3111
2153void 3112void
2154ev_fork_stop (EV_P_ ev_fork *w) 3113ev_fork_stop (EV_P_ ev_fork *w)
2155{ 3114{
2156 ev_clear_pending (EV_A_ (W)w); 3115 clear_pending (EV_A_ (W)w);
2157 if (expect_false (!ev_is_active (w))) 3116 if (expect_false (!ev_is_active (w)))
2158 return; 3117 return;
2159 3118
3119 EV_FREQUENT_CHECK;
3120
2160 { 3121 {
2161 int active = ((W)w)->active; 3122 int active = ev_active (w);
3123
2162 forks [active - 1] = forks [--forkcnt]; 3124 forks [active - 1] = forks [--forkcnt];
2163 ((W)forks [active - 1])->active = active; 3125 ev_active (forks [active - 1]) = active;
2164 } 3126 }
2165 3127
2166 ev_stop (EV_A_ (W)w); 3128 ev_stop (EV_A_ (W)w);
3129
3130 EV_FREQUENT_CHECK;
3131}
3132#endif
3133
3134#if EV_ASYNC_ENABLE
3135void
3136ev_async_start (EV_P_ ev_async *w)
3137{
3138 if (expect_false (ev_is_active (w)))
3139 return;
3140
3141 evpipe_init (EV_A);
3142
3143 EV_FREQUENT_CHECK;
3144
3145 ev_start (EV_A_ (W)w, ++asynccnt);
3146 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
3147 asyncs [asynccnt - 1] = w;
3148
3149 EV_FREQUENT_CHECK;
3150}
3151
3152void
3153ev_async_stop (EV_P_ ev_async *w)
3154{
3155 clear_pending (EV_A_ (W)w);
3156 if (expect_false (!ev_is_active (w)))
3157 return;
3158
3159 EV_FREQUENT_CHECK;
3160
3161 {
3162 int active = ev_active (w);
3163
3164 asyncs [active - 1] = asyncs [--asynccnt];
3165 ev_active (asyncs [active - 1]) = active;
3166 }
3167
3168 ev_stop (EV_A_ (W)w);
3169
3170 EV_FREQUENT_CHECK;
3171}
3172
3173void
3174ev_async_send (EV_P_ ev_async *w)
3175{
3176 w->sent = 1;
3177 evpipe_write (EV_A_ &gotasync);
2167} 3178}
2168#endif 3179#endif
2169 3180
2170/*****************************************************************************/ 3181/*****************************************************************************/
2171 3182
… …
2181once_cb (EV_P_ struct ev_once *once, int revents) 3192once_cb (EV_P_ struct ev_once *once, int revents)
2182{ 3193{
2183 void (*cb)(int revents, void *arg) = once->cb; 3194 void (*cb)(int revents, void *arg) = once->cb;
2184 void *arg = once->arg; 3195 void *arg = once->arg;
2185 3196
2186 ev_io_stop (EV_A_ &once->io); 3197 ev_io_stop (EV_A_ &once->io);
2187 ev_timer_stop (EV_A_ &once->to); 3198 ev_timer_stop (EV_A_ &once->to);
2188 ev_free (once); 3199 ev_free (once);
2189 3200
2190 cb (revents, arg); 3201 cb (revents, arg);
2191} 3202}
2192 3203
2193static void 3204static void
2194once_cb_io (EV_P_ ev_io *w, int revents) 3205once_cb_io (EV_P_ ev_io *w, int revents)
2195{ 3206{
2196 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));
2197} 3210}
2198 3211
2199static void 3212static void
2200once_cb_to (EV_P_ ev_timer *w, int revents) 3213once_cb_to (EV_P_ ev_timer *w, int revents)
2201{ 3214{
2202 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));
2203} 3218}
2204 3219
2205void 3220void
2206ev_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)
2207{ 3222{
… …
2229 ev_timer_set (&once->to, timeout, 0.); 3244 ev_timer_set (&once->to, timeout, 0.);
2230 ev_timer_start (EV_A_ &once->to); 3245 ev_timer_start (EV_A_ &once->to);
2231 } 3246 }
2232} 3247}
2233 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
2234#ifdef __cplusplus 3361#ifdef __cplusplus
2235} 3362}
2236#endif 3363#endif
2237 3364

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