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Comparing libev/ev.c (file contents):
Revision 1.190 by root, Fri Dec 21 01:26:04 2007 UTC vs.
Revision 1.294 by root, Wed Jul 8 02:46:05 2009 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * modification, are permitted provided that the following conditions are 8 * tion, are permitted provided that the following conditions are met:
9 * met: 9 *
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
25 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
26 * OF THE POSSIBILITY OF SUCH DAMAGE.
10 * 27 *
11 * * Redistributions of source code must retain the above copyright 28 * Alternatively, the contents of this file may be used under the terms of
12 * notice, this list of conditions and the following disclaimer. 29 * the GNU General Public License ("GPL") version 2 or any later version,
13 * 30 * in which case the provisions of the GPL are applicable instead of
14 * * Redistributions in binary form must reproduce the above 31 * the above. If you wish to allow the use of your version of this file
15 * copyright notice, this list of conditions and the following 32 * only under the terms of the GPL and not to allow others to use your
16 * disclaimer in the documentation and/or other materials provided 33 * version of this file under the BSD license, indicate your decision
17 * with the distribution. 34 * by deleting the provisions above and replace them with the notice
18 * 35 * and other provisions required by the GPL. If you do not delete the
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 36 * provisions above, a recipient may use your version of this file under
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 37 * either the BSD or the GPL.
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */ 38 */
31 39
32#ifdef __cplusplus 40#ifdef __cplusplus
33extern "C" { 41extern "C" {
34#endif 42#endif
35 43
44/* this big block deduces configuration from config.h */
36#ifndef EV_STANDALONE 45#ifndef EV_STANDALONE
37# ifdef EV_CONFIG_H 46# ifdef EV_CONFIG_H
38# include EV_CONFIG_H 47# include EV_CONFIG_H
39# else 48# else
40# include "config.h" 49# include "config.h"
41# endif 50# endif
42 51
52# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME
56# define EV_USE_REALTIME 0
57# endif
58# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1
60# endif
61# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL)
63# define EV_USE_CLOCK_SYSCALL 0
64# endif
65
43# if HAVE_CLOCK_GETTIME 66# if HAVE_CLOCK_GETTIME
44# ifndef EV_USE_MONOTONIC 67# ifndef EV_USE_MONOTONIC
45# define EV_USE_MONOTONIC 1 68# define EV_USE_MONOTONIC 1
46# endif 69# endif
47# ifndef EV_USE_REALTIME 70# ifndef EV_USE_REALTIME
48# define EV_USE_REALTIME 1 71# define EV_USE_REALTIME 0
49# endif 72# endif
50# else 73# else
51# ifndef EV_USE_MONOTONIC 74# ifndef EV_USE_MONOTONIC
52# define EV_USE_MONOTONIC 0 75# define EV_USE_MONOTONIC 0
53# endif 76# endif
54# ifndef EV_USE_REALTIME 77# ifndef EV_USE_REALTIME
55# define EV_USE_REALTIME 0 78# define EV_USE_REALTIME 0
79# endif
80# endif
81
82# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1
85# else
86# define EV_USE_NANOSLEEP 0
56# endif 87# endif
57# endif 88# endif
58 89
59# ifndef EV_USE_SELECT 90# ifndef EV_USE_SELECT
60# if HAVE_SELECT && HAVE_SYS_SELECT_H 91# if HAVE_SELECT && HAVE_SYS_SELECT_H
… …
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
… …
207#if !EV_STAT_ENABLE 315#if !EV_STAT_ENABLE
208# undef EV_USE_INOTIFY 316# undef EV_USE_INOTIFY
209# define EV_USE_INOTIFY 0 317# define EV_USE_INOTIFY 0
210#endif 318#endif
211 319
320#if !EV_USE_NANOSLEEP
321# ifndef _WIN32
322# include <sys/select.h>
323# endif
324#endif
325
212#if EV_USE_INOTIFY 326#if EV_USE_INOTIFY
327# include <sys/utsname.h>
328# include <sys/statfs.h>
213# include <sys/inotify.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
214#endif 335#endif
215 336
216#if EV_SELECT_IS_WINSOCKET 337#if EV_SELECT_IS_WINSOCKET
217# include <winsock.h> 338# include <winsock.h>
218#endif 339#endif
219 340
341#if EV_USE_EVENTFD
342/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
343# include <stdint.h>
344# ifdef __cplusplus
345extern "C" {
346# endif
347int eventfd (unsigned int initval, int flags);
348# ifdef __cplusplus
349}
350# endif
351#endif
352
220/**/ 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
221 360
222/* 361/*
223 * This is used to avoid floating point rounding problems. 362 * This is used to avoid floating point rounding problems.
224 * It is added to ev_rt_now when scheduling periodics 363 * It is added to ev_rt_now when scheduling periodics
225 * to ensure progress, time-wise, even when rounding 364 * to ensure progress, time-wise, even when rounding
… …
237# define expect(expr,value) __builtin_expect ((expr),(value)) 376# define expect(expr,value) __builtin_expect ((expr),(value))
238# define noinline __attribute__ ((noinline)) 377# define noinline __attribute__ ((noinline))
239#else 378#else
240# define expect(expr,value) (expr) 379# define expect(expr,value) (expr)
241# define noinline 380# define noinline
242# if __STDC_VERSION__ < 199901L 381# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
243# define inline 382# define inline
244# endif 383# endif
245#endif 384#endif
246 385
247#define expect_false(expr) expect ((expr) != 0, 0) 386#define expect_false(expr) expect ((expr) != 0, 0)
… …
262 401
263typedef ev_watcher *W; 402typedef ev_watcher *W;
264typedef ev_watcher_list *WL; 403typedef ev_watcher_list *WL;
265typedef ev_watcher_time *WT; 404typedef ev_watcher_time *WT;
266 405
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
267static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 416static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
417#endif
268 418
269#ifdef _WIN32 419#ifdef _WIN32
270# include "ev_win32.c" 420# include "ev_win32.c"
271#endif 421#endif
272 422
… …
279{ 429{
280 syserr_cb = cb; 430 syserr_cb = cb;
281} 431}
282 432
283static void noinline 433static void noinline
284syserr (const char *msg) 434ev_syserr (const char *msg)
285{ 435{
286 if (!msg) 436 if (!msg)
287 msg = "(libev) system error"; 437 msg = "(libev) system error";
288 438
289 if (syserr_cb) 439 if (syserr_cb)
… …
293 perror (msg); 443 perror (msg);
294 abort (); 444 abort ();
295 } 445 }
296} 446}
297 447
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
298static void *(*alloc)(void *ptr, long size); 463static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
299 464
300void 465void
301ev_set_allocator (void *(*cb)(void *ptr, long size)) 466ev_set_allocator (void *(*cb)(void *ptr, long size))
302{ 467{
303 alloc = cb; 468 alloc = cb;
304} 469}
305 470
306inline_speed void * 471inline_speed void *
307ev_realloc (void *ptr, long size) 472ev_realloc (void *ptr, long size)
308{ 473{
309 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 474 ptr = alloc (ptr, size);
310 475
311 if (!ptr && size) 476 if (!ptr && size)
312 { 477 {
313 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 478 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
314 abort (); 479 abort ();
… …
320#define ev_malloc(size) ev_realloc (0, (size)) 485#define ev_malloc(size) ev_realloc (0, (size))
321#define ev_free(ptr) ev_realloc ((ptr), 0) 486#define ev_free(ptr) ev_realloc ((ptr), 0)
322 487
323/*****************************************************************************/ 488/*****************************************************************************/
324 489
490/* file descriptor info structure */
325typedef struct 491typedef struct
326{ 492{
327 WL head; 493 WL head;
328 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 */
329 unsigned char reify; 497 unsigned char unused;
498#if EV_USE_EPOLL
499 unsigned int egen; /* generation counter to counter epoll bugs */
500#endif
330#if EV_SELECT_IS_WINSOCKET 501#if EV_SELECT_IS_WINSOCKET
331 SOCKET handle; 502 SOCKET handle;
332#endif 503#endif
333} ANFD; 504} ANFD;
334 505
506/* stores the pending event set for a given watcher */
335typedef struct 507typedef struct
336{ 508{
337 W w; 509 W w;
338 int events; 510 int events; /* the pending event set for the given watcher */
339} ANPENDING; 511} ANPENDING;
340 512
341#if EV_USE_INOTIFY 513#if EV_USE_INOTIFY
514/* hash table entry per inotify-id */
342typedef struct 515typedef struct
343{ 516{
344 WL head; 517 WL head;
345} 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)
346#endif 539#endif
347 540
348#if EV_MULTIPLICITY 541#if EV_MULTIPLICITY
349 542
350 struct ev_loop 543 struct ev_loop
… …
371 564
372#endif 565#endif
373 566
374/*****************************************************************************/ 567/*****************************************************************************/
375 568
569#ifndef EV_HAVE_EV_TIME
376ev_tstamp 570ev_tstamp
377ev_time (void) 571ev_time (void)
378{ 572{
379#if EV_USE_REALTIME 573#if EV_USE_REALTIME
574 if (expect_true (have_realtime))
575 {
380 struct timespec ts; 576 struct timespec ts;
381 clock_gettime (CLOCK_REALTIME, &ts); 577 clock_gettime (CLOCK_REALTIME, &ts);
382 return ts.tv_sec + ts.tv_nsec * 1e-9; 578 return ts.tv_sec + ts.tv_nsec * 1e-9;
383#else 579 }
580#endif
581
384 struct timeval tv; 582 struct timeval tv;
385 gettimeofday (&tv, 0); 583 gettimeofday (&tv, 0);
386 return tv.tv_sec + tv.tv_usec * 1e-6; 584 return tv.tv_sec + tv.tv_usec * 1e-6;
387#endif
388} 585}
586#endif
389 587
390ev_tstamp inline_size 588inline_size ev_tstamp
391get_clock (void) 589get_clock (void)
392{ 590{
393#if EV_USE_MONOTONIC 591#if EV_USE_MONOTONIC
394 if (expect_true (have_monotonic)) 592 if (expect_true (have_monotonic))
395 { 593 {
… …
408{ 606{
409 return ev_rt_now; 607 return ev_rt_now;
410} 608}
411#endif 609#endif
412 610
413int inline_size 611void
612ev_sleep (ev_tstamp delay)
613{
614 if (delay > 0.)
615 {
616#if EV_USE_NANOSLEEP
617 struct timespec ts;
618
619 ts.tv_sec = (time_t)delay;
620 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
621
622 nanosleep (&ts, 0);
623#elif defined(_WIN32)
624 Sleep ((unsigned long)(delay * 1e3));
625#else
626 struct timeval tv;
627
628 tv.tv_sec = (time_t)delay;
629 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
630
631 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
632 /* somehting not guaranteed by newer posix versions, but guaranteed */
633 /* by older ones */
634 select (0, 0, 0, 0, &tv);
635#endif
636 }
637}
638
639/*****************************************************************************/
640
641#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
642
643/* find a suitable new size for the given array, */
644/* hopefully by rounding to a ncie-to-malloc size */
645inline_size int
414array_nextsize (int elem, int cur, int cnt) 646array_nextsize (int elem, int cur, int cnt)
415{ 647{
416 int ncur = cur + 1; 648 int ncur = cur + 1;
417 649
418 do 650 do
419 ncur <<= 1; 651 ncur <<= 1;
420 while (cnt > ncur); 652 while (cnt > ncur);
421 653
422 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ 654 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
423 if (elem * ncur > 4096) 655 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
424 { 656 {
425 ncur *= elem; 657 ncur *= elem;
426 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; 658 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
427 ncur = ncur - sizeof (void *) * 4; 659 ncur = ncur - sizeof (void *) * 4;
428 ncur /= elem; 660 ncur /= elem;
429 } 661 }
430 662
431 return ncur; 663 return ncur;
… …
435array_realloc (int elem, void *base, int *cur, int cnt) 667array_realloc (int elem, void *base, int *cur, int cnt)
436{ 668{
437 *cur = array_nextsize (elem, *cur, cnt); 669 *cur = array_nextsize (elem, *cur, cnt);
438 return ev_realloc (base, elem * *cur); 670 return ev_realloc (base, elem * *cur);
439} 671}
672
673#define array_init_zero(base,count) \
674 memset ((void *)(base), 0, sizeof (*(base)) * (count))
440 675
441#define array_needsize(type,base,cur,cnt,init) \ 676#define array_needsize(type,base,cur,cnt,init) \
442 if (expect_false ((cnt) > (cur))) \ 677 if (expect_false ((cnt) > (cur))) \
443 { \ 678 { \
444 int ocur_ = (cur); \ 679 int ocur_ = (cur); \
… …
456 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 691 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
457 } 692 }
458#endif 693#endif
459 694
460#define array_free(stem, idx) \ 695#define array_free(stem, idx) \
461 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 696 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
462 697
463/*****************************************************************************/ 698/*****************************************************************************/
699
700/* dummy callback for pending events */
701static void noinline
702pendingcb (EV_P_ ev_prepare *w, int revents)
703{
704}
464 705
465void noinline 706void noinline
466ev_feed_event (EV_P_ void *w, int revents) 707ev_feed_event (EV_P_ void *w, int revents)
467{ 708{
468 W w_ = (W)w; 709 W w_ = (W)w;
… …
477 pendings [pri][w_->pending - 1].w = w_; 718 pendings [pri][w_->pending - 1].w = w_;
478 pendings [pri][w_->pending - 1].events = revents; 719 pendings [pri][w_->pending - 1].events = revents;
479 } 720 }
480} 721}
481 722
482void inline_speed 723inline_speed void
724feed_reverse (EV_P_ W w)
725{
726 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
727 rfeeds [rfeedcnt++] = w;
728}
729
730inline_size void
731feed_reverse_done (EV_P_ int revents)
732{
733 do
734 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
735 while (rfeedcnt);
736}
737
738inline_speed void
483queue_events (EV_P_ W *events, int eventcnt, int type) 739queue_events (EV_P_ W *events, int eventcnt, int type)
484{ 740{
485 int i; 741 int i;
486 742
487 for (i = 0; i < eventcnt; ++i) 743 for (i = 0; i < eventcnt; ++i)
488 ev_feed_event (EV_A_ events [i], type); 744 ev_feed_event (EV_A_ events [i], type);
489} 745}
490 746
491/*****************************************************************************/ 747/*****************************************************************************/
492 748
493void inline_size 749inline_speed void
494anfds_init (ANFD *base, int count)
495{
496 while (count--)
497 {
498 base->head = 0;
499 base->events = EV_NONE;
500 base->reify = 0;
501
502 ++base;
503 }
504}
505
506void inline_speed
507fd_event (EV_P_ int fd, int revents) 750fd_event (EV_P_ int fd, int revents)
508{ 751{
509 ANFD *anfd = anfds + fd; 752 ANFD *anfd = anfds + fd;
510 ev_io *w; 753 ev_io *w;
511 754
… …
523{ 766{
524 if (fd >= 0 && fd < anfdmax) 767 if (fd >= 0 && fd < anfdmax)
525 fd_event (EV_A_ fd, revents); 768 fd_event (EV_A_ fd, revents);
526} 769}
527 770
528void inline_size 771/* make sure the external fd watch events are in-sync */
772/* with the kernel/libev internal state */
773inline_size void
529fd_reify (EV_P) 774fd_reify (EV_P)
530{ 775{
531 int i; 776 int i;
532 777
533 for (i = 0; i < fdchangecnt; ++i) 778 for (i = 0; i < fdchangecnt; ++i)
… …
542 events |= (unsigned char)w->events; 787 events |= (unsigned char)w->events;
543 788
544#if EV_SELECT_IS_WINSOCKET 789#if EV_SELECT_IS_WINSOCKET
545 if (events) 790 if (events)
546 { 791 {
547 unsigned long argp; 792 unsigned long arg;
793 #ifdef EV_FD_TO_WIN32_HANDLE
794 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
795 #else
548 anfd->handle = _get_osfhandle (fd); 796 anfd->handle = _get_osfhandle (fd);
797 #endif
549 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 798 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
550 } 799 }
551#endif 800#endif
552 801
553 { 802 {
554 unsigned char o_events = anfd->events; 803 unsigned char o_events = anfd->events;
555 unsigned char o_reify = anfd->reify; 804 unsigned char o_reify = anfd->reify;
556 805
557 anfd->reify = 0; 806 anfd->reify = 0;
558 anfd->events = events; 807 anfd->events = events;
559 808
560 if (o_events != events || o_reify & EV_IOFDSET) 809 if (o_events != events || o_reify & EV__IOFDSET)
561 backend_modify (EV_A_ fd, o_events, events); 810 backend_modify (EV_A_ fd, o_events, events);
562 } 811 }
563 } 812 }
564 813
565 fdchangecnt = 0; 814 fdchangecnt = 0;
566} 815}
567 816
568void inline_size 817/* something about the given fd changed */
818inline_size void
569fd_change (EV_P_ int fd, int flags) 819fd_change (EV_P_ int fd, int flags)
570{ 820{
571 unsigned char reify = anfds [fd].reify; 821 unsigned char reify = anfds [fd].reify;
572 anfds [fd].reify |= flags; 822 anfds [fd].reify |= flags;
573 823
… …
577 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 827 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
578 fdchanges [fdchangecnt - 1] = fd; 828 fdchanges [fdchangecnt - 1] = fd;
579 } 829 }
580} 830}
581 831
582void inline_speed 832/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
833inline_speed void
583fd_kill (EV_P_ int fd) 834fd_kill (EV_P_ int fd)
584{ 835{
585 ev_io *w; 836 ev_io *w;
586 837
587 while ((w = (ev_io *)anfds [fd].head)) 838 while ((w = (ev_io *)anfds [fd].head))
… …
589 ev_io_stop (EV_A_ w); 840 ev_io_stop (EV_A_ w);
590 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 841 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
591 } 842 }
592} 843}
593 844
594int inline_size 845/* check whether the given fd is atcually valid, for error recovery */
846inline_size int
595fd_valid (int fd) 847fd_valid (int fd)
596{ 848{
597#ifdef _WIN32 849#ifdef _WIN32
598 return _get_osfhandle (fd) != -1; 850 return _get_osfhandle (fd) != -1;
599#else 851#else
… …
607{ 859{
608 int fd; 860 int fd;
609 861
610 for (fd = 0; fd < anfdmax; ++fd) 862 for (fd = 0; fd < anfdmax; ++fd)
611 if (anfds [fd].events) 863 if (anfds [fd].events)
612 if (!fd_valid (fd) == -1 && errno == EBADF) 864 if (!fd_valid (fd) && errno == EBADF)
613 fd_kill (EV_A_ fd); 865 fd_kill (EV_A_ fd);
614} 866}
615 867
616/* called on ENOMEM in select/poll to kill some fds and retry */ 868/* called on ENOMEM in select/poll to kill some fds and retry */
617static void noinline 869static void noinline
… …
635 887
636 for (fd = 0; fd < anfdmax; ++fd) 888 for (fd = 0; fd < anfdmax; ++fd)
637 if (anfds [fd].events) 889 if (anfds [fd].events)
638 { 890 {
639 anfds [fd].events = 0; 891 anfds [fd].events = 0;
892 anfds [fd].emask = 0;
640 fd_change (EV_A_ fd, EV_IOFDSET | 1); 893 fd_change (EV_A_ fd, EV__IOFDSET | 1);
641 } 894 }
642} 895}
643 896
644/*****************************************************************************/ 897/*****************************************************************************/
645 898
646void inline_speed 899/*
647upheap (WT *heap, int k) 900 * the heap functions want a real array index. array index 0 uis guaranteed to not
648{ 901 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
649 WT w = heap [k]; 902 * the branching factor of the d-tree.
903 */
650 904
651 while (k) 905/*
652 { 906 * at the moment we allow libev the luxury of two heaps,
653 int p = (k - 1) >> 1; 907 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
908 * which is more cache-efficient.
909 * the difference is about 5% with 50000+ watchers.
910 */
911#if EV_USE_4HEAP
654 912
655 if (heap [p]->at <= w->at) 913#define DHEAP 4
914#define HEAP0 (DHEAP - 1) /* index of first element in heap */
915#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
916#define UPHEAP_DONE(p,k) ((p) == (k))
917
918/* away from the root */
919inline_speed void
920downheap (ANHE *heap, int N, int k)
921{
922 ANHE he = heap [k];
923 ANHE *E = heap + N + HEAP0;
924
925 for (;;)
926 {
927 ev_tstamp minat;
928 ANHE *minpos;
929 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
930
931 /* find minimum child */
932 if (expect_true (pos + DHEAP - 1 < E))
933 {
934 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
935 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
936 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
937 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
938 }
939 else if (pos < E)
940 {
941 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
942 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
943 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
944 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
945 }
946 else
656 break; 947 break;
657 948
949 if (ANHE_at (he) <= minat)
950 break;
951
952 heap [k] = *minpos;
953 ev_active (ANHE_w (*minpos)) = k;
954
955 k = minpos - heap;
956 }
957
958 heap [k] = he;
959 ev_active (ANHE_w (he)) = k;
960}
961
962#else /* 4HEAP */
963
964#define HEAP0 1
965#define HPARENT(k) ((k) >> 1)
966#define UPHEAP_DONE(p,k) (!(p))
967
968/* away from the root */
969inline_speed void
970downheap (ANHE *heap, int N, int k)
971{
972 ANHE he = heap [k];
973
974 for (;;)
975 {
976 int c = k << 1;
977
978 if (c > N + HEAP0 - 1)
979 break;
980
981 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
982 ? 1 : 0;
983
984 if (ANHE_at (he) <= ANHE_at (heap [c]))
985 break;
986
987 heap [k] = heap [c];
988 ev_active (ANHE_w (heap [k])) = k;
989
990 k = c;
991 }
992
993 heap [k] = he;
994 ev_active (ANHE_w (he)) = k;
995}
996#endif
997
998/* towards the root */
999inline_speed void
1000upheap (ANHE *heap, int k)
1001{
1002 ANHE he = heap [k];
1003
1004 for (;;)
1005 {
1006 int p = HPARENT (k);
1007
1008 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1009 break;
1010
658 heap [k] = heap [p]; 1011 heap [k] = heap [p];
659 ((W)heap [k])->active = k + 1; 1012 ev_active (ANHE_w (heap [k])) = k;
660 k = p; 1013 k = p;
661 } 1014 }
662 1015
663 heap [k] = w; 1016 heap [k] = he;
664 ((W)heap [k])->active = k + 1; 1017 ev_active (ANHE_w (he)) = k;
665} 1018}
666 1019
667void inline_speed 1020/* move an element suitably so it is in a correct place */
668downheap (WT *heap, int N, int k) 1021inline_size void
669{
670 WT w = heap [k];
671
672 for (;;)
673 {
674 int c = (k << 1) + 1;
675
676 if (c >= N)
677 break;
678
679 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
680 ? 1 : 0;
681
682 if (w->at <= heap [c]->at)
683 break;
684
685 heap [k] = heap [c];
686 ((W)heap [k])->active = k + 1;
687
688 k = c;
689 }
690
691 heap [k] = w;
692 ((W)heap [k])->active = k + 1;
693}
694
695void inline_size
696adjustheap (WT *heap, int N, int k) 1022adjustheap (ANHE *heap, int N, int k)
697{ 1023{
1024 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
698 upheap (heap, k); 1025 upheap (heap, k);
1026 else
699 downheap (heap, N, k); 1027 downheap (heap, N, k);
1028}
1029
1030/* rebuild the heap: this function is used only once and executed rarely */
1031inline_size void
1032reheap (ANHE *heap, int N)
1033{
1034 int i;
1035
1036 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1037 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1038 for (i = 0; i < N; ++i)
1039 upheap (heap, i + HEAP0);
700} 1040}
701 1041
702/*****************************************************************************/ 1042/*****************************************************************************/
703 1043
1044/* associate signal watchers to a signal signal */
704typedef struct 1045typedef struct
705{ 1046{
706 WL head; 1047 WL head;
707 sig_atomic_t volatile gotsig; 1048 EV_ATOMIC_T gotsig;
708} ANSIG; 1049} ANSIG;
709 1050
710static ANSIG *signals; 1051static ANSIG *signals;
711static int signalmax; 1052static int signalmax;
712 1053
713static int sigpipe [2]; 1054static EV_ATOMIC_T gotsig;
714static sig_atomic_t volatile gotsig;
715static ev_io sigev;
716 1055
717void inline_size 1056/*****************************************************************************/
718signals_init (ANSIG *base, int count)
719{
720 while (count--)
721 {
722 base->head = 0;
723 base->gotsig = 0;
724 1057
725 ++base; 1058/* used to prepare libev internal fd's */
726 } 1059/* this is not fork-safe */
727} 1060inline_speed void
728
729static void
730sighandler (int signum)
731{
732#if _WIN32
733 signal (signum, sighandler);
734#endif
735
736 signals [signum - 1].gotsig = 1;
737
738 if (!gotsig)
739 {
740 int old_errno = errno;
741 gotsig = 1;
742 write (sigpipe [1], &signum, 1);
743 errno = old_errno;
744 }
745}
746
747void noinline
748ev_feed_signal_event (EV_P_ int signum)
749{
750 WL w;
751
752#if EV_MULTIPLICITY
753 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
754#endif
755
756 --signum;
757
758 if (signum < 0 || signum >= signalmax)
759 return;
760
761 signals [signum].gotsig = 0;
762
763 for (w = signals [signum].head; w; w = w->next)
764 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
765}
766
767static void
768sigcb (EV_P_ ev_io *iow, int revents)
769{
770 int signum;
771
772 read (sigpipe [0], &revents, 1);
773 gotsig = 0;
774
775 for (signum = signalmax; signum--; )
776 if (signals [signum].gotsig)
777 ev_feed_signal_event (EV_A_ signum + 1);
778}
779
780void inline_speed
781fd_intern (int fd) 1061fd_intern (int fd)
782{ 1062{
783#ifdef _WIN32 1063#ifdef _WIN32
784 int arg = 1; 1064 unsigned long arg = 1;
785 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1065 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
786#else 1066#else
787 fcntl (fd, F_SETFD, FD_CLOEXEC); 1067 fcntl (fd, F_SETFD, FD_CLOEXEC);
788 fcntl (fd, F_SETFL, O_NONBLOCK); 1068 fcntl (fd, F_SETFL, O_NONBLOCK);
789#endif 1069#endif
790} 1070}
791 1071
792static void noinline 1072static void noinline
793siginit (EV_P) 1073evpipe_init (EV_P)
794{ 1074{
1075 if (!ev_is_active (&pipe_w))
1076 {
1077#if EV_USE_EVENTFD
1078 if ((evfd = eventfd (0, 0)) >= 0)
1079 {
1080 evpipe [0] = -1;
1081 fd_intern (evfd);
1082 ev_io_set (&pipe_w, evfd, EV_READ);
1083 }
1084 else
1085#endif
1086 {
1087 while (pipe (evpipe))
1088 ev_syserr ("(libev) error creating signal/async pipe");
1089
795 fd_intern (sigpipe [0]); 1090 fd_intern (evpipe [0]);
796 fd_intern (sigpipe [1]); 1091 fd_intern (evpipe [1]);
1092 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1093 }
797 1094
798 ev_io_set (&sigev, sigpipe [0], EV_READ);
799 ev_io_start (EV_A_ &sigev); 1095 ev_io_start (EV_A_ &pipe_w);
800 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1096 ev_unref (EV_A); /* watcher should not keep loop alive */
1097 }
1098}
1099
1100inline_size void
1101evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1102{
1103 if (!*flag)
1104 {
1105 int old_errno = errno; /* save errno because write might clobber it */
1106
1107 *flag = 1;
1108
1109#if EV_USE_EVENTFD
1110 if (evfd >= 0)
1111 {
1112 uint64_t counter = 1;
1113 write (evfd, &counter, sizeof (uint64_t));
1114 }
1115 else
1116#endif
1117 write (evpipe [1], &old_errno, 1);
1118
1119 errno = old_errno;
1120 }
1121}
1122
1123/* called whenever the libev signal pipe */
1124/* got some events (signal, async) */
1125static void
1126pipecb (EV_P_ ev_io *iow, int revents)
1127{
1128#if EV_USE_EVENTFD
1129 if (evfd >= 0)
1130 {
1131 uint64_t counter;
1132 read (evfd, &counter, sizeof (uint64_t));
1133 }
1134 else
1135#endif
1136 {
1137 char dummy;
1138 read (evpipe [0], &dummy, 1);
1139 }
1140
1141 if (gotsig && ev_is_default_loop (EV_A))
1142 {
1143 int signum;
1144 gotsig = 0;
1145
1146 for (signum = signalmax; signum--; )
1147 if (signals [signum].gotsig)
1148 ev_feed_signal_event (EV_A_ signum + 1);
1149 }
1150
1151#if EV_ASYNC_ENABLE
1152 if (gotasync)
1153 {
1154 int i;
1155 gotasync = 0;
1156
1157 for (i = asynccnt; i--; )
1158 if (asyncs [i]->sent)
1159 {
1160 asyncs [i]->sent = 0;
1161 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1162 }
1163 }
1164#endif
801} 1165}
802 1166
803/*****************************************************************************/ 1167/*****************************************************************************/
804 1168
1169static void
1170ev_sighandler (int signum)
1171{
1172#if EV_MULTIPLICITY
1173 struct ev_loop *loop = &default_loop_struct;
1174#endif
1175
1176#if _WIN32
1177 signal (signum, ev_sighandler);
1178#endif
1179
1180 signals [signum - 1].gotsig = 1;
1181 evpipe_write (EV_A_ &gotsig);
1182}
1183
1184void noinline
1185ev_feed_signal_event (EV_P_ int signum)
1186{
1187 WL w;
1188
1189#if EV_MULTIPLICITY
1190 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1191#endif
1192
1193 --signum;
1194
1195 if (signum < 0 || signum >= signalmax)
1196 return;
1197
1198 signals [signum].gotsig = 0;
1199
1200 for (w = signals [signum].head; w; w = w->next)
1201 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1202}
1203
1204/*****************************************************************************/
1205
805static WL childs [EV_PID_HASHSIZE]; 1206static WL childs [EV_PID_HASHSIZE];
806 1207
807#ifndef _WIN32 1208#ifndef _WIN32
808 1209
809static ev_signal childev; 1210static ev_signal childev;
810 1211
811void inline_speed 1212#ifndef WIFCONTINUED
1213# define WIFCONTINUED(status) 0
1214#endif
1215
1216/* handle a single child status event */
1217inline_speed void
812child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 1218child_reap (EV_P_ int chain, int pid, int status)
813{ 1219{
814 ev_child *w; 1220 ev_child *w;
1221 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
815 1222
816 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1223 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1224 {
817 if (w->pid == pid || !w->pid) 1225 if ((w->pid == pid || !w->pid)
1226 && (!traced || (w->flags & 1)))
818 { 1227 {
819 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ 1228 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
820 w->rpid = pid; 1229 w->rpid = pid;
821 w->rstatus = status; 1230 w->rstatus = status;
822 ev_feed_event (EV_A_ (W)w, EV_CHILD); 1231 ev_feed_event (EV_A_ (W)w, EV_CHILD);
823 } 1232 }
1233 }
824} 1234}
825 1235
826#ifndef WCONTINUED 1236#ifndef WCONTINUED
827# define WCONTINUED 0 1237# define WCONTINUED 0
828#endif 1238#endif
829 1239
1240/* called on sigchld etc., calls waitpid */
830static void 1241static void
831childcb (EV_P_ ev_signal *sw, int revents) 1242childcb (EV_P_ ev_signal *sw, int revents)
832{ 1243{
833 int pid, status; 1244 int pid, status;
834 1245
… …
837 if (!WCONTINUED 1248 if (!WCONTINUED
838 || errno != EINVAL 1249 || errno != EINVAL
839 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) 1250 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
840 return; 1251 return;
841 1252
842 /* make sure we are called again until all childs have been reaped */ 1253 /* make sure we are called again until all children have been reaped */
843 /* we need to do it this way so that the callback gets called before we continue */ 1254 /* we need to do it this way so that the callback gets called before we continue */
844 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1255 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
845 1256
846 child_reap (EV_A_ sw, pid, pid, status); 1257 child_reap (EV_A_ pid, pid, status);
847 if (EV_PID_HASHSIZE > 1) 1258 if (EV_PID_HASHSIZE > 1)
848 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1259 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
849} 1260}
850 1261
851#endif 1262#endif
852 1263
853/*****************************************************************************/ 1264/*****************************************************************************/
… …
915 /* kqueue is borked on everything but netbsd apparently */ 1326 /* kqueue is borked on everything but netbsd apparently */
916 /* it usually doesn't work correctly on anything but sockets and pipes */ 1327 /* it usually doesn't work correctly on anything but sockets and pipes */
917 flags &= ~EVBACKEND_KQUEUE; 1328 flags &= ~EVBACKEND_KQUEUE;
918#endif 1329#endif
919#ifdef __APPLE__ 1330#ifdef __APPLE__
920 // flags &= ~EVBACKEND_KQUEUE; for documentation 1331 /* only select works correctly on that "unix-certified" platform */
921 flags &= ~EVBACKEND_POLL; 1332 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1333 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
922#endif 1334#endif
923 1335
924 return flags; 1336 return flags;
925} 1337}
926 1338
927unsigned int 1339unsigned int
928ev_embeddable_backends (void) 1340ev_embeddable_backends (void)
929{ 1341{
930 return EVBACKEND_EPOLL 1342 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
931 | EVBACKEND_KQUEUE 1343
932 | EVBACKEND_PORT; 1344 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1345 /* please fix it and tell me how to detect the fix */
1346 flags &= ~EVBACKEND_EPOLL;
1347
1348 return flags;
933} 1349}
934 1350
935unsigned int 1351unsigned int
936ev_backend (EV_P) 1352ev_backend (EV_P)
937{ 1353{
… …
942ev_loop_count (EV_P) 1358ev_loop_count (EV_P)
943{ 1359{
944 return loop_count; 1360 return loop_count;
945} 1361}
946 1362
1363unsigned int
1364ev_loop_depth (EV_P)
1365{
1366 return loop_depth;
1367}
1368
1369void
1370ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1371{
1372 io_blocktime = interval;
1373}
1374
1375void
1376ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1377{
1378 timeout_blocktime = interval;
1379}
1380
1381/* initialise a loop structure, must be zero-initialised */
947static void noinline 1382static void noinline
948loop_init (EV_P_ unsigned int flags) 1383loop_init (EV_P_ unsigned int flags)
949{ 1384{
950 if (!backend) 1385 if (!backend)
951 { 1386 {
1387#if EV_USE_REALTIME
1388 if (!have_realtime)
1389 {
1390 struct timespec ts;
1391
1392 if (!clock_gettime (CLOCK_REALTIME, &ts))
1393 have_realtime = 1;
1394 }
1395#endif
1396
952#if EV_USE_MONOTONIC 1397#if EV_USE_MONOTONIC
1398 if (!have_monotonic)
953 { 1399 {
954 struct timespec ts; 1400 struct timespec ts;
1401
955 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1402 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
956 have_monotonic = 1; 1403 have_monotonic = 1;
957 } 1404 }
958#endif 1405#endif
959 1406
960 ev_rt_now = ev_time (); 1407 ev_rt_now = ev_time ();
961 mn_now = get_clock (); 1408 mn_now = get_clock ();
962 now_floor = mn_now; 1409 now_floor = mn_now;
963 rtmn_diff = ev_rt_now - mn_now; 1410 rtmn_diff = ev_rt_now - mn_now;
1411
1412 io_blocktime = 0.;
1413 timeout_blocktime = 0.;
1414 backend = 0;
1415 backend_fd = -1;
1416 gotasync = 0;
1417#if EV_USE_INOTIFY
1418 fs_fd = -2;
1419#endif
964 1420
965 /* pid check not overridable via env */ 1421 /* pid check not overridable via env */
966#ifndef _WIN32 1422#ifndef _WIN32
967 if (flags & EVFLAG_FORKCHECK) 1423 if (flags & EVFLAG_FORKCHECK)
968 curpid = getpid (); 1424 curpid = getpid ();
… …
971 if (!(flags & EVFLAG_NOENV) 1427 if (!(flags & EVFLAG_NOENV)
972 && !enable_secure () 1428 && !enable_secure ()
973 && getenv ("LIBEV_FLAGS")) 1429 && getenv ("LIBEV_FLAGS"))
974 flags = atoi (getenv ("LIBEV_FLAGS")); 1430 flags = atoi (getenv ("LIBEV_FLAGS"));
975 1431
976 if (!(flags & 0x0000ffffUL)) 1432 if (!(flags & 0x0000ffffU))
977 flags |= ev_recommended_backends (); 1433 flags |= ev_recommended_backends ();
978
979 backend = 0;
980 backend_fd = -1;
981#if EV_USE_INOTIFY
982 fs_fd = -2;
983#endif
984 1434
985#if EV_USE_PORT 1435#if EV_USE_PORT
986 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1436 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
987#endif 1437#endif
988#if EV_USE_KQUEUE 1438#if EV_USE_KQUEUE
… …
996#endif 1446#endif
997#if EV_USE_SELECT 1447#if EV_USE_SELECT
998 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1448 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
999#endif 1449#endif
1000 1450
1451 ev_prepare_init (&pending_w, pendingcb);
1452
1001 ev_init (&sigev, sigcb); 1453 ev_init (&pipe_w, pipecb);
1002 ev_set_priority (&sigev, EV_MAXPRI); 1454 ev_set_priority (&pipe_w, EV_MAXPRI);
1003 } 1455 }
1004} 1456}
1005 1457
1458/* free up a loop structure */
1006static void noinline 1459static void noinline
1007loop_destroy (EV_P) 1460loop_destroy (EV_P)
1008{ 1461{
1009 int i; 1462 int i;
1463
1464 if (ev_is_active (&pipe_w))
1465 {
1466 ev_ref (EV_A); /* signal watcher */
1467 ev_io_stop (EV_A_ &pipe_w);
1468
1469#if EV_USE_EVENTFD
1470 if (evfd >= 0)
1471 close (evfd);
1472#endif
1473
1474 if (evpipe [0] >= 0)
1475 {
1476 close (evpipe [0]);
1477 close (evpipe [1]);
1478 }
1479 }
1010 1480
1011#if EV_USE_INOTIFY 1481#if EV_USE_INOTIFY
1012 if (fs_fd >= 0) 1482 if (fs_fd >= 0)
1013 close (fs_fd); 1483 close (fs_fd);
1014#endif 1484#endif
… …
1041 } 1511 }
1042 1512
1043 ev_free (anfds); anfdmax = 0; 1513 ev_free (anfds); anfdmax = 0;
1044 1514
1045 /* have to use the microsoft-never-gets-it-right macro */ 1515 /* have to use the microsoft-never-gets-it-right macro */
1516 array_free (rfeed, EMPTY);
1046 array_free (fdchange, EMPTY); 1517 array_free (fdchange, EMPTY);
1047 array_free (timer, EMPTY); 1518 array_free (timer, EMPTY);
1048#if EV_PERIODIC_ENABLE 1519#if EV_PERIODIC_ENABLE
1049 array_free (periodic, EMPTY); 1520 array_free (periodic, EMPTY);
1050#endif 1521#endif
1051#if EV_FORK_ENABLE 1522#if EV_FORK_ENABLE
1052 array_free (fork, EMPTY); 1523 array_free (fork, EMPTY);
1053#endif 1524#endif
1054 array_free (prepare, EMPTY); 1525 array_free (prepare, EMPTY);
1055 array_free (check, EMPTY); 1526 array_free (check, EMPTY);
1527#if EV_ASYNC_ENABLE
1528 array_free (async, EMPTY);
1529#endif
1056 1530
1057 backend = 0; 1531 backend = 0;
1058} 1532}
1059 1533
1534#if EV_USE_INOTIFY
1060void inline_size infy_fork (EV_P); 1535inline_size void infy_fork (EV_P);
1536#endif
1061 1537
1062void inline_size 1538inline_size void
1063loop_fork (EV_P) 1539loop_fork (EV_P)
1064{ 1540{
1065#if EV_USE_PORT 1541#if EV_USE_PORT
1066 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1542 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1067#endif 1543#endif
… …
1073#endif 1549#endif
1074#if EV_USE_INOTIFY 1550#if EV_USE_INOTIFY
1075 infy_fork (EV_A); 1551 infy_fork (EV_A);
1076#endif 1552#endif
1077 1553
1078 if (ev_is_active (&sigev)) 1554 if (ev_is_active (&pipe_w))
1079 { 1555 {
1080 /* default loop */ 1556 /* this "locks" the handlers against writing to the pipe */
1557 /* while we modify the fd vars */
1558 gotsig = 1;
1559#if EV_ASYNC_ENABLE
1560 gotasync = 1;
1561#endif
1081 1562
1082 ev_ref (EV_A); 1563 ev_ref (EV_A);
1083 ev_io_stop (EV_A_ &sigev); 1564 ev_io_stop (EV_A_ &pipe_w);
1565
1566#if EV_USE_EVENTFD
1567 if (evfd >= 0)
1568 close (evfd);
1569#endif
1570
1571 if (evpipe [0] >= 0)
1572 {
1084 close (sigpipe [0]); 1573 close (evpipe [0]);
1085 close (sigpipe [1]); 1574 close (evpipe [1]);
1575 }
1086 1576
1087 while (pipe (sigpipe))
1088 syserr ("(libev) error creating pipe");
1089
1090 siginit (EV_A); 1577 evpipe_init (EV_A);
1578 /* now iterate over everything, in case we missed something */
1579 pipecb (EV_A_ &pipe_w, EV_READ);
1091 } 1580 }
1092 1581
1093 postfork = 0; 1582 postfork = 0;
1094} 1583}
1095 1584
1096#if EV_MULTIPLICITY 1585#if EV_MULTIPLICITY
1586
1097struct ev_loop * 1587struct ev_loop *
1098ev_loop_new (unsigned int flags) 1588ev_loop_new (unsigned int flags)
1099{ 1589{
1100 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1590 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1101 1591
… …
1117} 1607}
1118 1608
1119void 1609void
1120ev_loop_fork (EV_P) 1610ev_loop_fork (EV_P)
1121{ 1611{
1122 postfork = 1; 1612 postfork = 1; /* must be in line with ev_default_fork */
1123} 1613}
1124 1614
1615#if EV_VERIFY
1616static void noinline
1617verify_watcher (EV_P_ W w)
1618{
1619 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1620
1621 if (w->pending)
1622 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1623}
1624
1625static void noinline
1626verify_heap (EV_P_ ANHE *heap, int N)
1627{
1628 int i;
1629
1630 for (i = HEAP0; i < N + HEAP0; ++i)
1631 {
1632 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1633 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1634 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1635
1636 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1637 }
1638}
1639
1640static void noinline
1641array_verify (EV_P_ W *ws, int cnt)
1642{
1643 while (cnt--)
1644 {
1645 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1646 verify_watcher (EV_A_ ws [cnt]);
1647 }
1648}
1649#endif
1650
1651void
1652ev_loop_verify (EV_P)
1653{
1654#if EV_VERIFY
1655 int i;
1656 WL w;
1657
1658 assert (activecnt >= -1);
1659
1660 assert (fdchangemax >= fdchangecnt);
1661 for (i = 0; i < fdchangecnt; ++i)
1662 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1663
1664 assert (anfdmax >= 0);
1665 for (i = 0; i < anfdmax; ++i)
1666 for (w = anfds [i].head; w; w = w->next)
1667 {
1668 verify_watcher (EV_A_ (W)w);
1669 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1670 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1671 }
1672
1673 assert (timermax >= timercnt);
1674 verify_heap (EV_A_ timers, timercnt);
1675
1676#if EV_PERIODIC_ENABLE
1677 assert (periodicmax >= periodiccnt);
1678 verify_heap (EV_A_ periodics, periodiccnt);
1679#endif
1680
1681 for (i = NUMPRI; i--; )
1682 {
1683 assert (pendingmax [i] >= pendingcnt [i]);
1684#if EV_IDLE_ENABLE
1685 assert (idleall >= 0);
1686 assert (idlemax [i] >= idlecnt [i]);
1687 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1688#endif
1689 }
1690
1691#if EV_FORK_ENABLE
1692 assert (forkmax >= forkcnt);
1693 array_verify (EV_A_ (W *)forks, forkcnt);
1694#endif
1695
1696#if EV_ASYNC_ENABLE
1697 assert (asyncmax >= asynccnt);
1698 array_verify (EV_A_ (W *)asyncs, asynccnt);
1699#endif
1700
1701 assert (preparemax >= preparecnt);
1702 array_verify (EV_A_ (W *)prepares, preparecnt);
1703
1704 assert (checkmax >= checkcnt);
1705 array_verify (EV_A_ (W *)checks, checkcnt);
1706
1707# if 0
1708 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1709 for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1125#endif 1710# endif
1711#endif
1712}
1713
1714#endif /* multiplicity */
1126 1715
1127#if EV_MULTIPLICITY 1716#if EV_MULTIPLICITY
1128struct ev_loop * 1717struct ev_loop *
1129ev_default_loop_init (unsigned int flags) 1718ev_default_loop_init (unsigned int flags)
1130#else 1719#else
1131int 1720int
1132ev_default_loop (unsigned int flags) 1721ev_default_loop (unsigned int flags)
1133#endif 1722#endif
1134{ 1723{
1135 if (sigpipe [0] == sigpipe [1])
1136 if (pipe (sigpipe))
1137 return 0;
1138
1139 if (!ev_default_loop_ptr) 1724 if (!ev_default_loop_ptr)
1140 { 1725 {
1141#if EV_MULTIPLICITY 1726#if EV_MULTIPLICITY
1142 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1727 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1143#else 1728#else
… …
1146 1731
1147 loop_init (EV_A_ flags); 1732 loop_init (EV_A_ flags);
1148 1733
1149 if (ev_backend (EV_A)) 1734 if (ev_backend (EV_A))
1150 { 1735 {
1151 siginit (EV_A);
1152
1153#ifndef _WIN32 1736#ifndef _WIN32
1154 ev_signal_init (&childev, childcb, SIGCHLD); 1737 ev_signal_init (&childev, childcb, SIGCHLD);
1155 ev_set_priority (&childev, EV_MAXPRI); 1738 ev_set_priority (&childev, EV_MAXPRI);
1156 ev_signal_start (EV_A_ &childev); 1739 ev_signal_start (EV_A_ &childev);
1157 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1740 ev_unref (EV_A); /* child watcher should not keep loop alive */
… …
1169{ 1752{
1170#if EV_MULTIPLICITY 1753#if EV_MULTIPLICITY
1171 struct ev_loop *loop = ev_default_loop_ptr; 1754 struct ev_loop *loop = ev_default_loop_ptr;
1172#endif 1755#endif
1173 1756
1757 ev_default_loop_ptr = 0;
1758
1174#ifndef _WIN32 1759#ifndef _WIN32
1175 ev_ref (EV_A); /* child watcher */ 1760 ev_ref (EV_A); /* child watcher */
1176 ev_signal_stop (EV_A_ &childev); 1761 ev_signal_stop (EV_A_ &childev);
1177#endif 1762#endif
1178 1763
1179 ev_ref (EV_A); /* signal watcher */
1180 ev_io_stop (EV_A_ &sigev);
1181
1182 close (sigpipe [0]); sigpipe [0] = 0;
1183 close (sigpipe [1]); sigpipe [1] = 0;
1184
1185 loop_destroy (EV_A); 1764 loop_destroy (EV_A);
1186} 1765}
1187 1766
1188void 1767void
1189ev_default_fork (void) 1768ev_default_fork (void)
1190{ 1769{
1191#if EV_MULTIPLICITY 1770#if EV_MULTIPLICITY
1192 struct ev_loop *loop = ev_default_loop_ptr; 1771 struct ev_loop *loop = ev_default_loop_ptr;
1193#endif 1772#endif
1194 1773
1195 if (backend) 1774 postfork = 1; /* must be in line with ev_loop_fork */
1196 postfork = 1;
1197} 1775}
1198 1776
1199/*****************************************************************************/ 1777/*****************************************************************************/
1200 1778
1201void 1779void
1202ev_invoke (EV_P_ void *w, int revents) 1780ev_invoke (EV_P_ void *w, int revents)
1203{ 1781{
1204 EV_CB_INVOKE ((W)w, revents); 1782 EV_CB_INVOKE ((W)w, revents);
1205} 1783}
1206 1784
1207void inline_speed 1785inline_speed void
1208call_pending (EV_P) 1786call_pending (EV_P)
1209{ 1787{
1210 int pri; 1788 int pri;
1211 1789
1212 for (pri = NUMPRI; pri--; ) 1790 for (pri = NUMPRI; pri--; )
1213 while (pendingcnt [pri]) 1791 while (pendingcnt [pri])
1214 { 1792 {
1215 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1793 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1216 1794
1217 if (expect_true (p->w))
1218 {
1219 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 1795 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1796 /* ^ this is no longer true, as pending_w could be here */
1220 1797
1221 p->w->pending = 0; 1798 p->w->pending = 0;
1222 EV_CB_INVOKE (p->w, p->events); 1799 EV_CB_INVOKE (p->w, p->events);
1223 } 1800 EV_FREQUENT_CHECK;
1224 } 1801 }
1225} 1802}
1226 1803
1227void inline_size
1228timers_reify (EV_P)
1229{
1230 while (timercnt && ((WT)timers [0])->at <= mn_now)
1231 {
1232 ev_timer *w = (ev_timer *)timers [0];
1233
1234 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1235
1236 /* first reschedule or stop timer */
1237 if (w->repeat)
1238 {
1239 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1240
1241 ((WT)w)->at += w->repeat;
1242 if (((WT)w)->at < mn_now)
1243 ((WT)w)->at = mn_now;
1244
1245 downheap (timers, timercnt, 0);
1246 }
1247 else
1248 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1249
1250 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1251 }
1252}
1253
1254#if EV_PERIODIC_ENABLE
1255void inline_size
1256periodics_reify (EV_P)
1257{
1258 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1259 {
1260 ev_periodic *w = (ev_periodic *)periodics [0];
1261
1262 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1263
1264 /* first reschedule or stop timer */
1265 if (w->reschedule_cb)
1266 {
1267 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1268 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1269 downheap (periodics, periodiccnt, 0);
1270 }
1271 else if (w->interval)
1272 {
1273 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1274 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1275 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1276 downheap (periodics, periodiccnt, 0);
1277 }
1278 else
1279 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1280
1281 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1282 }
1283}
1284
1285static void noinline
1286periodics_reschedule (EV_P)
1287{
1288 int i;
1289
1290 /* adjust periodics after time jump */
1291 for (i = 0; i < periodiccnt; ++i)
1292 {
1293 ev_periodic *w = (ev_periodic *)periodics [i];
1294
1295 if (w->reschedule_cb)
1296 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1297 else if (w->interval)
1298 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1299 }
1300
1301 /* now rebuild the heap */
1302 for (i = periodiccnt >> 1; i--; )
1303 downheap (periodics, periodiccnt, i);
1304}
1305#endif
1306
1307#if EV_IDLE_ENABLE 1804#if EV_IDLE_ENABLE
1308void inline_size 1805/* make idle watchers pending. this handles the "call-idle */
1806/* only when higher priorities are idle" logic */
1807inline_size void
1309idle_reify (EV_P) 1808idle_reify (EV_P)
1310{ 1809{
1311 if (expect_false (idleall)) 1810 if (expect_false (idleall))
1312 { 1811 {
1313 int pri; 1812 int pri;
… …
1325 } 1824 }
1326 } 1825 }
1327} 1826}
1328#endif 1827#endif
1329 1828
1330void inline_speed 1829/* make timers pending */
1830inline_size void
1831timers_reify (EV_P)
1832{
1833 EV_FREQUENT_CHECK;
1834
1835 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1836 {
1837 do
1838 {
1839 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
1840
1841 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
1842
1843 /* first reschedule or stop timer */
1844 if (w->repeat)
1845 {
1846 ev_at (w) += w->repeat;
1847 if (ev_at (w) < mn_now)
1848 ev_at (w) = mn_now;
1849
1850 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1851
1852 ANHE_at_cache (timers [HEAP0]);
1853 downheap (timers, timercnt, HEAP0);
1854 }
1855 else
1856 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1857
1858 EV_FREQUENT_CHECK;
1859 feed_reverse (EV_A_ (W)w);
1860 }
1861 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1862
1863 feed_reverse_done (EV_A_ EV_TIMEOUT);
1864 }
1865}
1866
1867#if EV_PERIODIC_ENABLE
1868/* make periodics pending */
1869inline_size void
1870periodics_reify (EV_P)
1871{
1872 EV_FREQUENT_CHECK;
1873
1874 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1875 {
1876 int feed_count = 0;
1877
1878 do
1879 {
1880 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1881
1882 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
1883
1884 /* first reschedule or stop timer */
1885 if (w->reschedule_cb)
1886 {
1887 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1888
1889 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1890
1891 ANHE_at_cache (periodics [HEAP0]);
1892 downheap (periodics, periodiccnt, HEAP0);
1893 }
1894 else if (w->interval)
1895 {
1896 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1897 /* if next trigger time is not sufficiently in the future, put it there */
1898 /* this might happen because of floating point inexactness */
1899 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1900 {
1901 ev_at (w) += w->interval;
1902
1903 /* if interval is unreasonably low we might still have a time in the past */
1904 /* so correct this. this will make the periodic very inexact, but the user */
1905 /* has effectively asked to get triggered more often than possible */
1906 if (ev_at (w) < ev_rt_now)
1907 ev_at (w) = ev_rt_now;
1908 }
1909
1910 ANHE_at_cache (periodics [HEAP0]);
1911 downheap (periodics, periodiccnt, HEAP0);
1912 }
1913 else
1914 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1915
1916 EV_FREQUENT_CHECK;
1917 feed_reverse (EV_A_ (W)w);
1918 }
1919 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1920
1921 feed_reverse_done (EV_A_ EV_PERIODIC);
1922 }
1923}
1924
1925/* simply recalculate all periodics */
1926/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1927static void noinline
1928periodics_reschedule (EV_P)
1929{
1930 int i;
1931
1932 /* adjust periodics after time jump */
1933 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1934 {
1935 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1936
1937 if (w->reschedule_cb)
1938 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1939 else if (w->interval)
1940 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1941
1942 ANHE_at_cache (periodics [i]);
1943 }
1944
1945 reheap (periodics, periodiccnt);
1946}
1947#endif
1948
1949/* adjust all timers by a given offset */
1950static void noinline
1951timers_reschedule (EV_P_ ev_tstamp adjust)
1952{
1953 int i;
1954
1955 for (i = 0; i < timercnt; ++i)
1956 {
1957 ANHE *he = timers + i + HEAP0;
1958 ANHE_w (*he)->at += adjust;
1959 ANHE_at_cache (*he);
1960 }
1961}
1962
1963/* fetch new monotonic and realtime times from the kernel */
1964/* also detetc if there was a timejump, and act accordingly */
1965inline_speed void
1331time_update (EV_P_ ev_tstamp max_block) 1966time_update (EV_P_ ev_tstamp max_block)
1332{ 1967{
1333 int i;
1334
1335#if EV_USE_MONOTONIC 1968#if EV_USE_MONOTONIC
1336 if (expect_true (have_monotonic)) 1969 if (expect_true (have_monotonic))
1337 { 1970 {
1971 int i;
1338 ev_tstamp odiff = rtmn_diff; 1972 ev_tstamp odiff = rtmn_diff;
1339 1973
1340 mn_now = get_clock (); 1974 mn_now = get_clock ();
1341 1975
1342 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 1976 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1360 */ 1994 */
1361 for (i = 4; --i; ) 1995 for (i = 4; --i; )
1362 { 1996 {
1363 rtmn_diff = ev_rt_now - mn_now; 1997 rtmn_diff = ev_rt_now - mn_now;
1364 1998
1365 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1999 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1366 return; /* all is well */ 2000 return; /* all is well */
1367 2001
1368 ev_rt_now = ev_time (); 2002 ev_rt_now = ev_time ();
1369 mn_now = get_clock (); 2003 mn_now = get_clock ();
1370 now_floor = mn_now; 2004 now_floor = mn_now;
1371 } 2005 }
1372 2006
2007 /* no timer adjustment, as the monotonic clock doesn't jump */
2008 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1373# if EV_PERIODIC_ENABLE 2009# if EV_PERIODIC_ENABLE
1374 periodics_reschedule (EV_A); 2010 periodics_reschedule (EV_A);
1375# endif 2011# endif
1376 /* no timer adjustment, as the monotonic clock doesn't jump */
1377 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1378 } 2012 }
1379 else 2013 else
1380#endif 2014#endif
1381 { 2015 {
1382 ev_rt_now = ev_time (); 2016 ev_rt_now = ev_time ();
1383 2017
1384 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2018 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1385 { 2019 {
2020 /* adjust timers. this is easy, as the offset is the same for all of them */
2021 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1386#if EV_PERIODIC_ENABLE 2022#if EV_PERIODIC_ENABLE
1387 periodics_reschedule (EV_A); 2023 periodics_reschedule (EV_A);
1388#endif 2024#endif
1389 /* adjust timers. this is easy, as the offset is the same for all of them */
1390 for (i = 0; i < timercnt; ++i)
1391 ((WT)timers [i])->at += ev_rt_now - mn_now;
1392 } 2025 }
1393 2026
1394 mn_now = ev_rt_now; 2027 mn_now = ev_rt_now;
1395 } 2028 }
1396} 2029}
1397 2030
1398void 2031void
1399ev_ref (EV_P)
1400{
1401 ++activecnt;
1402}
1403
1404void
1405ev_unref (EV_P)
1406{
1407 --activecnt;
1408}
1409
1410static int loop_done;
1411
1412void
1413ev_loop (EV_P_ int flags) 2032ev_loop (EV_P_ int flags)
1414{ 2033{
1415 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 2034 ++loop_depth;
1416 ? EVUNLOOP_ONE 2035
1417 : EVUNLOOP_CANCEL; 2036 loop_done = EVUNLOOP_CANCEL;
1418 2037
1419 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2038 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1420 2039
1421 do 2040 do
1422 { 2041 {
2042#if EV_VERIFY >= 2
2043 ev_loop_verify (EV_A);
2044#endif
2045
1423#ifndef _WIN32 2046#ifndef _WIN32
1424 if (expect_false (curpid)) /* penalise the forking check even more */ 2047 if (expect_false (curpid)) /* penalise the forking check even more */
1425 if (expect_false (getpid () != curpid)) 2048 if (expect_false (getpid () != curpid))
1426 { 2049 {
1427 curpid = getpid (); 2050 curpid = getpid ();
… …
1444 { 2067 {
1445 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2068 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1446 call_pending (EV_A); 2069 call_pending (EV_A);
1447 } 2070 }
1448 2071
1449 if (expect_false (!activecnt))
1450 break;
1451
1452 /* we might have forked, so reify kernel state if necessary */ 2072 /* we might have forked, so reify kernel state if necessary */
1453 if (expect_false (postfork)) 2073 if (expect_false (postfork))
1454 loop_fork (EV_A); 2074 loop_fork (EV_A);
1455 2075
1456 /* update fd-related kernel structures */ 2076 /* update fd-related kernel structures */
1457 fd_reify (EV_A); 2077 fd_reify (EV_A);
1458 2078
1459 /* calculate blocking time */ 2079 /* calculate blocking time */
1460 { 2080 {
1461 ev_tstamp block; 2081 ev_tstamp waittime = 0.;
2082 ev_tstamp sleeptime = 0.;
1462 2083
1463 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt)) 2084 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1464 block = 0.; /* do not block at all */
1465 else
1466 { 2085 {
2086 /* remember old timestamp for io_blocktime calculation */
2087 ev_tstamp prev_mn_now = mn_now;
2088
1467 /* update time to cancel out callback processing overhead */ 2089 /* update time to cancel out callback processing overhead */
1468 time_update (EV_A_ 1e100); 2090 time_update (EV_A_ 1e100);
1469 2091
1470 block = MAX_BLOCKTIME; 2092 waittime = MAX_BLOCKTIME;
1471 2093
1472 if (timercnt) 2094 if (timercnt)
1473 { 2095 {
1474 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 2096 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1475 if (block > to) block = to; 2097 if (waittime > to) waittime = to;
1476 } 2098 }
1477 2099
1478#if EV_PERIODIC_ENABLE 2100#if EV_PERIODIC_ENABLE
1479 if (periodiccnt) 2101 if (periodiccnt)
1480 { 2102 {
1481 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 2103 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1482 if (block > to) block = to; 2104 if (waittime > to) waittime = to;
1483 } 2105 }
1484#endif 2106#endif
1485 2107
2108 /* don't let timeouts decrease the waittime below timeout_blocktime */
2109 if (expect_false (waittime < timeout_blocktime))
2110 waittime = timeout_blocktime;
2111
2112 /* extra check because io_blocktime is commonly 0 */
1486 if (expect_false (block < 0.)) block = 0.; 2113 if (expect_false (io_blocktime))
2114 {
2115 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2116
2117 if (sleeptime > waittime - backend_fudge)
2118 sleeptime = waittime - backend_fudge;
2119
2120 if (expect_true (sleeptime > 0.))
2121 {
2122 ev_sleep (sleeptime);
2123 waittime -= sleeptime;
2124 }
2125 }
1487 } 2126 }
1488 2127
1489 ++loop_count; 2128 ++loop_count;
1490 backend_poll (EV_A_ block); 2129 backend_poll (EV_A_ waittime);
1491 2130
1492 /* update ev_rt_now, do magic */ 2131 /* update ev_rt_now, do magic */
1493 time_update (EV_A_ block); 2132 time_update (EV_A_ waittime + sleeptime);
1494 } 2133 }
1495 2134
1496 /* queue pending timers and reschedule them */ 2135 /* queue pending timers and reschedule them */
1497 timers_reify (EV_A); /* relative timers called last */ 2136 timers_reify (EV_A); /* relative timers called last */
1498#if EV_PERIODIC_ENABLE 2137#if EV_PERIODIC_ENABLE
… …
1507 /* queue check watchers, to be executed first */ 2146 /* queue check watchers, to be executed first */
1508 if (expect_false (checkcnt)) 2147 if (expect_false (checkcnt))
1509 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2148 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1510 2149
1511 call_pending (EV_A); 2150 call_pending (EV_A);
1512
1513 } 2151 }
1514 while (expect_true (activecnt && !loop_done)); 2152 while (expect_true (
2153 activecnt
2154 && !loop_done
2155 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2156 ));
1515 2157
1516 if (loop_done == EVUNLOOP_ONE) 2158 if (loop_done == EVUNLOOP_ONE)
1517 loop_done = EVUNLOOP_CANCEL; 2159 loop_done = EVUNLOOP_CANCEL;
2160
2161 --loop_depth;
1518} 2162}
1519 2163
1520void 2164void
1521ev_unloop (EV_P_ int how) 2165ev_unloop (EV_P_ int how)
1522{ 2166{
1523 loop_done = how; 2167 loop_done = how;
1524} 2168}
1525 2169
2170void
2171ev_ref (EV_P)
2172{
2173 ++activecnt;
2174}
2175
2176void
2177ev_unref (EV_P)
2178{
2179 --activecnt;
2180}
2181
2182void
2183ev_now_update (EV_P)
2184{
2185 time_update (EV_A_ 1e100);
2186}
2187
2188void
2189ev_suspend (EV_P)
2190{
2191 ev_now_update (EV_A);
2192}
2193
2194void
2195ev_resume (EV_P)
2196{
2197 ev_tstamp mn_prev = mn_now;
2198
2199 ev_now_update (EV_A);
2200 timers_reschedule (EV_A_ mn_now - mn_prev);
2201#if EV_PERIODIC_ENABLE
2202 /* TODO: really do this? */
2203 periodics_reschedule (EV_A);
2204#endif
2205}
2206
1526/*****************************************************************************/ 2207/*****************************************************************************/
2208/* singly-linked list management, used when the expected list length is short */
1527 2209
1528void inline_size 2210inline_size void
1529wlist_add (WL *head, WL elem) 2211wlist_add (WL *head, WL elem)
1530{ 2212{
1531 elem->next = *head; 2213 elem->next = *head;
1532 *head = elem; 2214 *head = elem;
1533} 2215}
1534 2216
1535void inline_size 2217inline_size void
1536wlist_del (WL *head, WL elem) 2218wlist_del (WL *head, WL elem)
1537{ 2219{
1538 while (*head) 2220 while (*head)
1539 { 2221 {
1540 if (*head == elem) 2222 if (*head == elem)
… …
1545 2227
1546 head = &(*head)->next; 2228 head = &(*head)->next;
1547 } 2229 }
1548} 2230}
1549 2231
1550void inline_speed 2232/* internal, faster, version of ev_clear_pending */
2233inline_speed void
1551clear_pending (EV_P_ W w) 2234clear_pending (EV_P_ W w)
1552{ 2235{
1553 if (w->pending) 2236 if (w->pending)
1554 { 2237 {
1555 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2238 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1556 w->pending = 0; 2239 w->pending = 0;
1557 } 2240 }
1558} 2241}
1559 2242
1560int 2243int
… …
1564 int pending = w_->pending; 2247 int pending = w_->pending;
1565 2248
1566 if (expect_true (pending)) 2249 if (expect_true (pending))
1567 { 2250 {
1568 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2251 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2252 p->w = (W)&pending_w;
1569 w_->pending = 0; 2253 w_->pending = 0;
1570 p->w = 0;
1571 return p->events; 2254 return p->events;
1572 } 2255 }
1573 else 2256 else
1574 return 0; 2257 return 0;
1575} 2258}
1576 2259
1577void inline_size 2260inline_size void
1578pri_adjust (EV_P_ W w) 2261pri_adjust (EV_P_ W w)
1579{ 2262{
1580 int pri = w->priority; 2263 int pri = w->priority;
1581 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2264 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1582 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2265 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1583 w->priority = pri; 2266 w->priority = pri;
1584} 2267}
1585 2268
1586void inline_speed 2269inline_speed void
1587ev_start (EV_P_ W w, int active) 2270ev_start (EV_P_ W w, int active)
1588{ 2271{
1589 pri_adjust (EV_A_ w); 2272 pri_adjust (EV_A_ w);
1590 w->active = active; 2273 w->active = active;
1591 ev_ref (EV_A); 2274 ev_ref (EV_A);
1592} 2275}
1593 2276
1594void inline_size 2277inline_size void
1595ev_stop (EV_P_ W w) 2278ev_stop (EV_P_ W w)
1596{ 2279{
1597 ev_unref (EV_A); 2280 ev_unref (EV_A);
1598 w->active = 0; 2281 w->active = 0;
1599} 2282}
… …
1606 int fd = w->fd; 2289 int fd = w->fd;
1607 2290
1608 if (expect_false (ev_is_active (w))) 2291 if (expect_false (ev_is_active (w)))
1609 return; 2292 return;
1610 2293
1611 assert (("ev_io_start called with negative fd", fd >= 0)); 2294 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2295 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2296
2297 EV_FREQUENT_CHECK;
1612 2298
1613 ev_start (EV_A_ (W)w, 1); 2299 ev_start (EV_A_ (W)w, 1);
1614 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2300 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1615 wlist_add (&anfds[fd].head, (WL)w); 2301 wlist_add (&anfds[fd].head, (WL)w);
1616 2302
1617 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2303 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
1618 w->events &= ~EV_IOFDSET; 2304 w->events &= ~EV__IOFDSET;
2305
2306 EV_FREQUENT_CHECK;
1619} 2307}
1620 2308
1621void noinline 2309void noinline
1622ev_io_stop (EV_P_ ev_io *w) 2310ev_io_stop (EV_P_ ev_io *w)
1623{ 2311{
1624 clear_pending (EV_A_ (W)w); 2312 clear_pending (EV_A_ (W)w);
1625 if (expect_false (!ev_is_active (w))) 2313 if (expect_false (!ev_is_active (w)))
1626 return; 2314 return;
1627 2315
1628 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2316 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2317
2318 EV_FREQUENT_CHECK;
1629 2319
1630 wlist_del (&anfds[w->fd].head, (WL)w); 2320 wlist_del (&anfds[w->fd].head, (WL)w);
1631 ev_stop (EV_A_ (W)w); 2321 ev_stop (EV_A_ (W)w);
1632 2322
1633 fd_change (EV_A_ w->fd, 1); 2323 fd_change (EV_A_ w->fd, 1);
2324
2325 EV_FREQUENT_CHECK;
1634} 2326}
1635 2327
1636void noinline 2328void noinline
1637ev_timer_start (EV_P_ ev_timer *w) 2329ev_timer_start (EV_P_ ev_timer *w)
1638{ 2330{
1639 if (expect_false (ev_is_active (w))) 2331 if (expect_false (ev_is_active (w)))
1640 return; 2332 return;
1641 2333
1642 ((WT)w)->at += mn_now; 2334 ev_at (w) += mn_now;
1643 2335
1644 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2336 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1645 2337
2338 EV_FREQUENT_CHECK;
2339
2340 ++timercnt;
1646 ev_start (EV_A_ (W)w, ++timercnt); 2341 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1647 array_needsize (WT, timers, timermax, timercnt, EMPTY2); 2342 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1648 timers [timercnt - 1] = (WT)w; 2343 ANHE_w (timers [ev_active (w)]) = (WT)w;
1649 upheap (timers, timercnt - 1); 2344 ANHE_at_cache (timers [ev_active (w)]);
2345 upheap (timers, ev_active (w));
1650 2346
2347 EV_FREQUENT_CHECK;
2348
1651 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ 2349 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1652} 2350}
1653 2351
1654void noinline 2352void noinline
1655ev_timer_stop (EV_P_ ev_timer *w) 2353ev_timer_stop (EV_P_ ev_timer *w)
1656{ 2354{
1657 clear_pending (EV_A_ (W)w); 2355 clear_pending (EV_A_ (W)w);
1658 if (expect_false (!ev_is_active (w))) 2356 if (expect_false (!ev_is_active (w)))
1659 return; 2357 return;
1660 2358
1661 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w)); 2359 EV_FREQUENT_CHECK;
1662 2360
1663 { 2361 {
1664 int active = ((W)w)->active; 2362 int active = ev_active (w);
1665 2363
2364 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2365
2366 --timercnt;
2367
1666 if (expect_true (--active < --timercnt)) 2368 if (expect_true (active < timercnt + HEAP0))
1667 { 2369 {
1668 timers [active] = timers [timercnt]; 2370 timers [active] = timers [timercnt + HEAP0];
1669 adjustheap (timers, timercnt, active); 2371 adjustheap (timers, timercnt, active);
1670 } 2372 }
1671 } 2373 }
1672 2374
1673 ((WT)w)->at -= mn_now; 2375 EV_FREQUENT_CHECK;
2376
2377 ev_at (w) -= mn_now;
1674 2378
1675 ev_stop (EV_A_ (W)w); 2379 ev_stop (EV_A_ (W)w);
1676} 2380}
1677 2381
1678void noinline 2382void noinline
1679ev_timer_again (EV_P_ ev_timer *w) 2383ev_timer_again (EV_P_ ev_timer *w)
1680{ 2384{
2385 EV_FREQUENT_CHECK;
2386
1681 if (ev_is_active (w)) 2387 if (ev_is_active (w))
1682 { 2388 {
1683 if (w->repeat) 2389 if (w->repeat)
1684 { 2390 {
1685 ((WT)w)->at = mn_now + w->repeat; 2391 ev_at (w) = mn_now + w->repeat;
2392 ANHE_at_cache (timers [ev_active (w)]);
1686 adjustheap (timers, timercnt, ((W)w)->active - 1); 2393 adjustheap (timers, timercnt, ev_active (w));
1687 } 2394 }
1688 else 2395 else
1689 ev_timer_stop (EV_A_ w); 2396 ev_timer_stop (EV_A_ w);
1690 } 2397 }
1691 else if (w->repeat) 2398 else if (w->repeat)
1692 { 2399 {
1693 w->at = w->repeat; 2400 ev_at (w) = w->repeat;
1694 ev_timer_start (EV_A_ w); 2401 ev_timer_start (EV_A_ w);
1695 } 2402 }
2403
2404 EV_FREQUENT_CHECK;
1696} 2405}
1697 2406
1698#if EV_PERIODIC_ENABLE 2407#if EV_PERIODIC_ENABLE
1699void noinline 2408void noinline
1700ev_periodic_start (EV_P_ ev_periodic *w) 2409ev_periodic_start (EV_P_ ev_periodic *w)
1701{ 2410{
1702 if (expect_false (ev_is_active (w))) 2411 if (expect_false (ev_is_active (w)))
1703 return; 2412 return;
1704 2413
1705 if (w->reschedule_cb) 2414 if (w->reschedule_cb)
1706 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2415 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1707 else if (w->interval) 2416 else if (w->interval)
1708 { 2417 {
1709 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2418 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1710 /* this formula differs from the one in periodic_reify because we do not always round up */ 2419 /* this formula differs from the one in periodic_reify because we do not always round up */
1711 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2420 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1712 } 2421 }
1713 else 2422 else
1714 ((WT)w)->at = w->offset; 2423 ev_at (w) = w->offset;
1715 2424
2425 EV_FREQUENT_CHECK;
2426
2427 ++periodiccnt;
1716 ev_start (EV_A_ (W)w, ++periodiccnt); 2428 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1717 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2); 2429 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1718 periodics [periodiccnt - 1] = (WT)w; 2430 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1719 upheap (periodics, periodiccnt - 1); 2431 ANHE_at_cache (periodics [ev_active (w)]);
2432 upheap (periodics, ev_active (w));
1720 2433
2434 EV_FREQUENT_CHECK;
2435
1721 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ 2436 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1722} 2437}
1723 2438
1724void noinline 2439void noinline
1725ev_periodic_stop (EV_P_ ev_periodic *w) 2440ev_periodic_stop (EV_P_ ev_periodic *w)
1726{ 2441{
1727 clear_pending (EV_A_ (W)w); 2442 clear_pending (EV_A_ (W)w);
1728 if (expect_false (!ev_is_active (w))) 2443 if (expect_false (!ev_is_active (w)))
1729 return; 2444 return;
1730 2445
1731 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w)); 2446 EV_FREQUENT_CHECK;
1732 2447
1733 { 2448 {
1734 int active = ((W)w)->active; 2449 int active = ev_active (w);
1735 2450
2451 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2452
2453 --periodiccnt;
2454
1736 if (expect_true (--active < --periodiccnt)) 2455 if (expect_true (active < periodiccnt + HEAP0))
1737 { 2456 {
1738 periodics [active] = periodics [periodiccnt]; 2457 periodics [active] = periodics [periodiccnt + HEAP0];
1739 adjustheap (periodics, periodiccnt, active); 2458 adjustheap (periodics, periodiccnt, active);
1740 } 2459 }
1741 } 2460 }
1742 2461
2462 EV_FREQUENT_CHECK;
2463
1743 ev_stop (EV_A_ (W)w); 2464 ev_stop (EV_A_ (W)w);
1744} 2465}
1745 2466
1746void noinline 2467void noinline
1747ev_periodic_again (EV_P_ ev_periodic *w) 2468ev_periodic_again (EV_P_ ev_periodic *w)
… …
1758 2479
1759void noinline 2480void noinline
1760ev_signal_start (EV_P_ ev_signal *w) 2481ev_signal_start (EV_P_ ev_signal *w)
1761{ 2482{
1762#if EV_MULTIPLICITY 2483#if EV_MULTIPLICITY
1763 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2484 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1764#endif 2485#endif
1765 if (expect_false (ev_is_active (w))) 2486 if (expect_false (ev_is_active (w)))
1766 return; 2487 return;
1767 2488
1768 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2489 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2490
2491 evpipe_init (EV_A);
2492
2493 EV_FREQUENT_CHECK;
1769 2494
1770 { 2495 {
1771#ifndef _WIN32 2496#ifndef _WIN32
1772 sigset_t full, prev; 2497 sigset_t full, prev;
1773 sigfillset (&full); 2498 sigfillset (&full);
1774 sigprocmask (SIG_SETMASK, &full, &prev); 2499 sigprocmask (SIG_SETMASK, &full, &prev);
1775#endif 2500#endif
1776 2501
1777 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2502 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
1778 2503
1779#ifndef _WIN32 2504#ifndef _WIN32
1780 sigprocmask (SIG_SETMASK, &prev, 0); 2505 sigprocmask (SIG_SETMASK, &prev, 0);
1781#endif 2506#endif
1782 } 2507 }
… …
1785 wlist_add (&signals [w->signum - 1].head, (WL)w); 2510 wlist_add (&signals [w->signum - 1].head, (WL)w);
1786 2511
1787 if (!((WL)w)->next) 2512 if (!((WL)w)->next)
1788 { 2513 {
1789#if _WIN32 2514#if _WIN32
1790 signal (w->signum, sighandler); 2515 signal (w->signum, ev_sighandler);
1791#else 2516#else
1792 struct sigaction sa; 2517 struct sigaction sa;
1793 sa.sa_handler = sighandler; 2518 sa.sa_handler = ev_sighandler;
1794 sigfillset (&sa.sa_mask); 2519 sigfillset (&sa.sa_mask);
1795 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2520 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1796 sigaction (w->signum, &sa, 0); 2521 sigaction (w->signum, &sa, 0);
1797#endif 2522#endif
1798 } 2523 }
2524
2525 EV_FREQUENT_CHECK;
1799} 2526}
1800 2527
1801void noinline 2528void noinline
1802ev_signal_stop (EV_P_ ev_signal *w) 2529ev_signal_stop (EV_P_ ev_signal *w)
1803{ 2530{
1804 clear_pending (EV_A_ (W)w); 2531 clear_pending (EV_A_ (W)w);
1805 if (expect_false (!ev_is_active (w))) 2532 if (expect_false (!ev_is_active (w)))
1806 return; 2533 return;
1807 2534
2535 EV_FREQUENT_CHECK;
2536
1808 wlist_del (&signals [w->signum - 1].head, (WL)w); 2537 wlist_del (&signals [w->signum - 1].head, (WL)w);
1809 ev_stop (EV_A_ (W)w); 2538 ev_stop (EV_A_ (W)w);
1810 2539
1811 if (!signals [w->signum - 1].head) 2540 if (!signals [w->signum - 1].head)
1812 signal (w->signum, SIG_DFL); 2541 signal (w->signum, SIG_DFL);
2542
2543 EV_FREQUENT_CHECK;
1813} 2544}
1814 2545
1815void 2546void
1816ev_child_start (EV_P_ ev_child *w) 2547ev_child_start (EV_P_ ev_child *w)
1817{ 2548{
1818#if EV_MULTIPLICITY 2549#if EV_MULTIPLICITY
1819 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2550 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1820#endif 2551#endif
1821 if (expect_false (ev_is_active (w))) 2552 if (expect_false (ev_is_active (w)))
1822 return; 2553 return;
1823 2554
2555 EV_FREQUENT_CHECK;
2556
1824 ev_start (EV_A_ (W)w, 1); 2557 ev_start (EV_A_ (W)w, 1);
1825 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2558 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2559
2560 EV_FREQUENT_CHECK;
1826} 2561}
1827 2562
1828void 2563void
1829ev_child_stop (EV_P_ ev_child *w) 2564ev_child_stop (EV_P_ ev_child *w)
1830{ 2565{
1831 clear_pending (EV_A_ (W)w); 2566 clear_pending (EV_A_ (W)w);
1832 if (expect_false (!ev_is_active (w))) 2567 if (expect_false (!ev_is_active (w)))
1833 return; 2568 return;
1834 2569
2570 EV_FREQUENT_CHECK;
2571
1835 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2572 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1836 ev_stop (EV_A_ (W)w); 2573 ev_stop (EV_A_ (W)w);
2574
2575 EV_FREQUENT_CHECK;
1837} 2576}
1838 2577
1839#if EV_STAT_ENABLE 2578#if EV_STAT_ENABLE
1840 2579
1841# ifdef _WIN32 2580# ifdef _WIN32
1842# undef lstat 2581# undef lstat
1843# define lstat(a,b) _stati64 (a,b) 2582# define lstat(a,b) _stati64 (a,b)
1844# endif 2583# endif
1845 2584
1846#define DEF_STAT_INTERVAL 5.0074891 2585#define DEF_STAT_INTERVAL 5.0074891
2586#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
1847#define MIN_STAT_INTERVAL 0.1074891 2587#define MIN_STAT_INTERVAL 0.1074891
1848 2588
1849static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2589static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1850 2590
1851#if EV_USE_INOTIFY 2591#if EV_USE_INOTIFY
1852# define EV_INOTIFY_BUFSIZE 8192 2592# define EV_INOTIFY_BUFSIZE 8192
… …
1856{ 2596{
1857 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); 2597 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
1858 2598
1859 if (w->wd < 0) 2599 if (w->wd < 0)
1860 { 2600 {
2601 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
1861 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2602 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1862 2603
1863 /* monitor some parent directory for speedup hints */ 2604 /* monitor some parent directory for speedup hints */
2605 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2606 /* but an efficiency issue only */
1864 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2607 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1865 { 2608 {
1866 char path [4096]; 2609 char path [4096];
1867 strcpy (path, w->path); 2610 strcpy (path, w->path);
1868 2611
… …
1871 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2614 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1872 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2615 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1873 2616
1874 char *pend = strrchr (path, '/'); 2617 char *pend = strrchr (path, '/');
1875 2618
1876 if (!pend) 2619 if (!pend || pend == path)
1877 break; /* whoops, no '/', complain to your admin */ 2620 break;
1878 2621
1879 *pend = 0; 2622 *pend = 0;
1880 w->wd = inotify_add_watch (fs_fd, path, mask); 2623 w->wd = inotify_add_watch (fs_fd, path, mask);
1881 } 2624 }
1882 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2625 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1883 } 2626 }
1884 } 2627 }
1885 else
1886 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1887 2628
1888 if (w->wd >= 0) 2629 if (w->wd >= 0)
2630 {
1889 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2631 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2632
2633 /* now local changes will be tracked by inotify, but remote changes won't */
2634 /* unless the filesystem it known to be local, we therefore still poll */
2635 /* also do poll on <2.6.25, but with normal frequency */
2636 struct statfs sfs;
2637
2638 if (fs_2625 && !statfs (w->path, &sfs))
2639 if (sfs.f_type == 0x1373 /* devfs */
2640 || sfs.f_type == 0xEF53 /* ext2/3 */
2641 || sfs.f_type == 0x3153464a /* jfs */
2642 || sfs.f_type == 0x52654973 /* reiser3 */
2643 || sfs.f_type == 0x01021994 /* tempfs */
2644 || sfs.f_type == 0x58465342 /* xfs */)
2645 return;
2646
2647 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2648 ev_timer_again (EV_A_ &w->timer);
2649 }
1890} 2650}
1891 2651
1892static void noinline 2652static void noinline
1893infy_del (EV_P_ ev_stat *w) 2653infy_del (EV_P_ ev_stat *w)
1894{ 2654{
… …
1908 2668
1909static void noinline 2669static void noinline
1910infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2670infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1911{ 2671{
1912 if (slot < 0) 2672 if (slot < 0)
1913 /* overflow, need to check for all hahs slots */ 2673 /* overflow, need to check for all hash slots */
1914 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2674 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1915 infy_wd (EV_A_ slot, wd, ev); 2675 infy_wd (EV_A_ slot, wd, ev);
1916 else 2676 else
1917 { 2677 {
1918 WL w_; 2678 WL w_;
… …
1924 2684
1925 if (w->wd == wd || wd == -1) 2685 if (w->wd == wd || wd == -1)
1926 { 2686 {
1927 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2687 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1928 { 2688 {
2689 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1929 w->wd = -1; 2690 w->wd = -1;
1930 infy_add (EV_A_ w); /* re-add, no matter what */ 2691 infy_add (EV_A_ w); /* re-add, no matter what */
1931 } 2692 }
1932 2693
1933 stat_timer_cb (EV_A_ &w->timer, 0); 2694 stat_timer_cb (EV_A_ &w->timer, 0);
… …
1946 2707
1947 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 2708 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1948 infy_wd (EV_A_ ev->wd, ev->wd, ev); 2709 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1949} 2710}
1950 2711
1951void inline_size 2712inline_size void
2713check_2625 (EV_P)
2714{
2715 /* kernels < 2.6.25 are borked
2716 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2717 */
2718 struct utsname buf;
2719 int major, minor, micro;
2720
2721 if (uname (&buf))
2722 return;
2723
2724 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2725 return;
2726
2727 if (major < 2
2728 || (major == 2 && minor < 6)
2729 || (major == 2 && minor == 6 && micro < 25))
2730 return;
2731
2732 fs_2625 = 1;
2733}
2734
2735inline_size void
1952infy_init (EV_P) 2736infy_init (EV_P)
1953{ 2737{
1954 if (fs_fd != -2) 2738 if (fs_fd != -2)
1955 return; 2739 return;
2740
2741 fs_fd = -1;
2742
2743 check_2625 (EV_A);
1956 2744
1957 fs_fd = inotify_init (); 2745 fs_fd = inotify_init ();
1958 2746
1959 if (fs_fd >= 0) 2747 if (fs_fd >= 0)
1960 { 2748 {
… …
1962 ev_set_priority (&fs_w, EV_MAXPRI); 2750 ev_set_priority (&fs_w, EV_MAXPRI);
1963 ev_io_start (EV_A_ &fs_w); 2751 ev_io_start (EV_A_ &fs_w);
1964 } 2752 }
1965} 2753}
1966 2754
1967void inline_size 2755inline_size void
1968infy_fork (EV_P) 2756infy_fork (EV_P)
1969{ 2757{
1970 int slot; 2758 int slot;
1971 2759
1972 if (fs_fd < 0) 2760 if (fs_fd < 0)
… …
1988 w->wd = -1; 2776 w->wd = -1;
1989 2777
1990 if (fs_fd >= 0) 2778 if (fs_fd >= 0)
1991 infy_add (EV_A_ w); /* re-add, no matter what */ 2779 infy_add (EV_A_ w); /* re-add, no matter what */
1992 else 2780 else
1993 ev_timer_start (EV_A_ &w->timer); 2781 ev_timer_again (EV_A_ &w->timer);
1994 } 2782 }
1995
1996 } 2783 }
1997} 2784}
1998 2785
2786#endif
2787
2788#ifdef _WIN32
2789# define EV_LSTAT(p,b) _stati64 (p, b)
2790#else
2791# define EV_LSTAT(p,b) lstat (p, b)
1999#endif 2792#endif
2000 2793
2001void 2794void
2002ev_stat_stat (EV_P_ ev_stat *w) 2795ev_stat_stat (EV_P_ ev_stat *w)
2003{ 2796{
… …
2030 || w->prev.st_atime != w->attr.st_atime 2823 || w->prev.st_atime != w->attr.st_atime
2031 || w->prev.st_mtime != w->attr.st_mtime 2824 || w->prev.st_mtime != w->attr.st_mtime
2032 || w->prev.st_ctime != w->attr.st_ctime 2825 || w->prev.st_ctime != w->attr.st_ctime
2033 ) { 2826 ) {
2034 #if EV_USE_INOTIFY 2827 #if EV_USE_INOTIFY
2828 if (fs_fd >= 0)
2829 {
2035 infy_del (EV_A_ w); 2830 infy_del (EV_A_ w);
2036 infy_add (EV_A_ w); 2831 infy_add (EV_A_ w);
2037 ev_stat_stat (EV_A_ w); /* avoid race... */ 2832 ev_stat_stat (EV_A_ w); /* avoid race... */
2833 }
2038 #endif 2834 #endif
2039 2835
2040 ev_feed_event (EV_A_ w, EV_STAT); 2836 ev_feed_event (EV_A_ w, EV_STAT);
2041 } 2837 }
2042} 2838}
… …
2045ev_stat_start (EV_P_ ev_stat *w) 2841ev_stat_start (EV_P_ ev_stat *w)
2046{ 2842{
2047 if (expect_false (ev_is_active (w))) 2843 if (expect_false (ev_is_active (w)))
2048 return; 2844 return;
2049 2845
2050 /* since we use memcmp, we need to clear any padding data etc. */
2051 memset (&w->prev, 0, sizeof (ev_statdata));
2052 memset (&w->attr, 0, sizeof (ev_statdata));
2053
2054 ev_stat_stat (EV_A_ w); 2846 ev_stat_stat (EV_A_ w);
2055 2847
2848 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2056 if (w->interval < MIN_STAT_INTERVAL) 2849 w->interval = MIN_STAT_INTERVAL;
2057 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2058 2850
2059 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 2851 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2060 ev_set_priority (&w->timer, ev_priority (w)); 2852 ev_set_priority (&w->timer, ev_priority (w));
2061 2853
2062#if EV_USE_INOTIFY 2854#if EV_USE_INOTIFY
2063 infy_init (EV_A); 2855 infy_init (EV_A);
2064 2856
2065 if (fs_fd >= 0) 2857 if (fs_fd >= 0)
2066 infy_add (EV_A_ w); 2858 infy_add (EV_A_ w);
2067 else 2859 else
2068#endif 2860#endif
2069 ev_timer_start (EV_A_ &w->timer); 2861 ev_timer_again (EV_A_ &w->timer);
2070 2862
2071 ev_start (EV_A_ (W)w, 1); 2863 ev_start (EV_A_ (W)w, 1);
2864
2865 EV_FREQUENT_CHECK;
2072} 2866}
2073 2867
2074void 2868void
2075ev_stat_stop (EV_P_ ev_stat *w) 2869ev_stat_stop (EV_P_ ev_stat *w)
2076{ 2870{
2077 clear_pending (EV_A_ (W)w); 2871 clear_pending (EV_A_ (W)w);
2078 if (expect_false (!ev_is_active (w))) 2872 if (expect_false (!ev_is_active (w)))
2079 return; 2873 return;
2080 2874
2875 EV_FREQUENT_CHECK;
2876
2081#if EV_USE_INOTIFY 2877#if EV_USE_INOTIFY
2082 infy_del (EV_A_ w); 2878 infy_del (EV_A_ w);
2083#endif 2879#endif
2084 ev_timer_stop (EV_A_ &w->timer); 2880 ev_timer_stop (EV_A_ &w->timer);
2085 2881
2086 ev_stop (EV_A_ (W)w); 2882 ev_stop (EV_A_ (W)w);
2883
2884 EV_FREQUENT_CHECK;
2087} 2885}
2088#endif 2886#endif
2089 2887
2090#if EV_IDLE_ENABLE 2888#if EV_IDLE_ENABLE
2091void 2889void
… …
2093{ 2891{
2094 if (expect_false (ev_is_active (w))) 2892 if (expect_false (ev_is_active (w)))
2095 return; 2893 return;
2096 2894
2097 pri_adjust (EV_A_ (W)w); 2895 pri_adjust (EV_A_ (W)w);
2896
2897 EV_FREQUENT_CHECK;
2098 2898
2099 { 2899 {
2100 int active = ++idlecnt [ABSPRI (w)]; 2900 int active = ++idlecnt [ABSPRI (w)];
2101 2901
2102 ++idleall; 2902 ++idleall;
2103 ev_start (EV_A_ (W)w, active); 2903 ev_start (EV_A_ (W)w, active);
2104 2904
2105 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 2905 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2106 idles [ABSPRI (w)][active - 1] = w; 2906 idles [ABSPRI (w)][active - 1] = w;
2107 } 2907 }
2908
2909 EV_FREQUENT_CHECK;
2108} 2910}
2109 2911
2110void 2912void
2111ev_idle_stop (EV_P_ ev_idle *w) 2913ev_idle_stop (EV_P_ ev_idle *w)
2112{ 2914{
2113 clear_pending (EV_A_ (W)w); 2915 clear_pending (EV_A_ (W)w);
2114 if (expect_false (!ev_is_active (w))) 2916 if (expect_false (!ev_is_active (w)))
2115 return; 2917 return;
2116 2918
2919 EV_FREQUENT_CHECK;
2920
2117 { 2921 {
2118 int active = ((W)w)->active; 2922 int active = ev_active (w);
2119 2923
2120 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 2924 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2121 ((W)idles [ABSPRI (w)][active - 1])->active = active; 2925 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2122 2926
2123 ev_stop (EV_A_ (W)w); 2927 ev_stop (EV_A_ (W)w);
2124 --idleall; 2928 --idleall;
2125 } 2929 }
2930
2931 EV_FREQUENT_CHECK;
2126} 2932}
2127#endif 2933#endif
2128 2934
2129void 2935void
2130ev_prepare_start (EV_P_ ev_prepare *w) 2936ev_prepare_start (EV_P_ ev_prepare *w)
2131{ 2937{
2132 if (expect_false (ev_is_active (w))) 2938 if (expect_false (ev_is_active (w)))
2133 return; 2939 return;
2940
2941 EV_FREQUENT_CHECK;
2134 2942
2135 ev_start (EV_A_ (W)w, ++preparecnt); 2943 ev_start (EV_A_ (W)w, ++preparecnt);
2136 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 2944 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2137 prepares [preparecnt - 1] = w; 2945 prepares [preparecnt - 1] = w;
2946
2947 EV_FREQUENT_CHECK;
2138} 2948}
2139 2949
2140void 2950void
2141ev_prepare_stop (EV_P_ ev_prepare *w) 2951ev_prepare_stop (EV_P_ ev_prepare *w)
2142{ 2952{
2143 clear_pending (EV_A_ (W)w); 2953 clear_pending (EV_A_ (W)w);
2144 if (expect_false (!ev_is_active (w))) 2954 if (expect_false (!ev_is_active (w)))
2145 return; 2955 return;
2146 2956
2957 EV_FREQUENT_CHECK;
2958
2147 { 2959 {
2148 int active = ((W)w)->active; 2960 int active = ev_active (w);
2961
2149 prepares [active - 1] = prepares [--preparecnt]; 2962 prepares [active - 1] = prepares [--preparecnt];
2150 ((W)prepares [active - 1])->active = active; 2963 ev_active (prepares [active - 1]) = active;
2151 } 2964 }
2152 2965
2153 ev_stop (EV_A_ (W)w); 2966 ev_stop (EV_A_ (W)w);
2967
2968 EV_FREQUENT_CHECK;
2154} 2969}
2155 2970
2156void 2971void
2157ev_check_start (EV_P_ ev_check *w) 2972ev_check_start (EV_P_ ev_check *w)
2158{ 2973{
2159 if (expect_false (ev_is_active (w))) 2974 if (expect_false (ev_is_active (w)))
2160 return; 2975 return;
2976
2977 EV_FREQUENT_CHECK;
2161 2978
2162 ev_start (EV_A_ (W)w, ++checkcnt); 2979 ev_start (EV_A_ (W)w, ++checkcnt);
2163 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 2980 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2164 checks [checkcnt - 1] = w; 2981 checks [checkcnt - 1] = w;
2982
2983 EV_FREQUENT_CHECK;
2165} 2984}
2166 2985
2167void 2986void
2168ev_check_stop (EV_P_ ev_check *w) 2987ev_check_stop (EV_P_ ev_check *w)
2169{ 2988{
2170 clear_pending (EV_A_ (W)w); 2989 clear_pending (EV_A_ (W)w);
2171 if (expect_false (!ev_is_active (w))) 2990 if (expect_false (!ev_is_active (w)))
2172 return; 2991 return;
2173 2992
2993 EV_FREQUENT_CHECK;
2994
2174 { 2995 {
2175 int active = ((W)w)->active; 2996 int active = ev_active (w);
2997
2176 checks [active - 1] = checks [--checkcnt]; 2998 checks [active - 1] = checks [--checkcnt];
2177 ((W)checks [active - 1])->active = active; 2999 ev_active (checks [active - 1]) = active;
2178 } 3000 }
2179 3001
2180 ev_stop (EV_A_ (W)w); 3002 ev_stop (EV_A_ (W)w);
3003
3004 EV_FREQUENT_CHECK;
2181} 3005}
2182 3006
2183#if EV_EMBED_ENABLE 3007#if EV_EMBED_ENABLE
2184void noinline 3008void noinline
2185ev_embed_sweep (EV_P_ ev_embed *w) 3009ev_embed_sweep (EV_P_ ev_embed *w)
… …
2193 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3017 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2194 3018
2195 if (ev_cb (w)) 3019 if (ev_cb (w))
2196 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3020 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2197 else 3021 else
2198 ev_embed_sweep (loop, w); 3022 ev_loop (w->other, EVLOOP_NONBLOCK);
2199} 3023}
2200 3024
2201static void 3025static void
2202embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3026embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2203{ 3027{
2204 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3028 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2205 3029
2206 fd_reify (w->other); 3030 {
3031 struct ev_loop *loop = w->other;
3032
3033 while (fdchangecnt)
3034 {
3035 fd_reify (EV_A);
3036 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3037 }
3038 }
2207} 3039}
3040
3041static void
3042embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3043{
3044 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3045
3046 ev_embed_stop (EV_A_ w);
3047
3048 {
3049 struct ev_loop *loop = w->other;
3050
3051 ev_loop_fork (EV_A);
3052 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3053 }
3054
3055 ev_embed_start (EV_A_ w);
3056}
3057
3058#if 0
3059static void
3060embed_idle_cb (EV_P_ ev_idle *idle, int revents)
3061{
3062 ev_idle_stop (EV_A_ idle);
3063}
3064#endif
2208 3065
2209void 3066void
2210ev_embed_start (EV_P_ ev_embed *w) 3067ev_embed_start (EV_P_ ev_embed *w)
2211{ 3068{
2212 if (expect_false (ev_is_active (w))) 3069 if (expect_false (ev_is_active (w)))
2213 return; 3070 return;
2214 3071
2215 { 3072 {
2216 struct ev_loop *loop = w->other; 3073 struct ev_loop *loop = w->other;
2217 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3074 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2218 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_WRITE); 3075 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2219 } 3076 }
3077
3078 EV_FREQUENT_CHECK;
2220 3079
2221 ev_set_priority (&w->io, ev_priority (w)); 3080 ev_set_priority (&w->io, ev_priority (w));
2222 ev_io_start (EV_A_ &w->io); 3081 ev_io_start (EV_A_ &w->io);
2223 3082
2224 ev_prepare_init (&w->prepare, embed_prepare_cb); 3083 ev_prepare_init (&w->prepare, embed_prepare_cb);
2225 ev_set_priority (&w->prepare, EV_MINPRI); 3084 ev_set_priority (&w->prepare, EV_MINPRI);
2226 ev_prepare_start (EV_A_ &w->prepare); 3085 ev_prepare_start (EV_A_ &w->prepare);
2227 3086
3087 ev_fork_init (&w->fork, embed_fork_cb);
3088 ev_fork_start (EV_A_ &w->fork);
3089
3090 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
3091
2228 ev_start (EV_A_ (W)w, 1); 3092 ev_start (EV_A_ (W)w, 1);
3093
3094 EV_FREQUENT_CHECK;
2229} 3095}
2230 3096
2231void 3097void
2232ev_embed_stop (EV_P_ ev_embed *w) 3098ev_embed_stop (EV_P_ ev_embed *w)
2233{ 3099{
2234 clear_pending (EV_A_ (W)w); 3100 clear_pending (EV_A_ (W)w);
2235 if (expect_false (!ev_is_active (w))) 3101 if (expect_false (!ev_is_active (w)))
2236 return; 3102 return;
2237 3103
3104 EV_FREQUENT_CHECK;
3105
2238 ev_io_stop (EV_A_ &w->io); 3106 ev_io_stop (EV_A_ &w->io);
2239 ev_prepare_stop (EV_A_ &w->prepare); 3107 ev_prepare_stop (EV_A_ &w->prepare);
3108 ev_fork_stop (EV_A_ &w->fork);
2240 3109
2241 ev_stop (EV_A_ (W)w); 3110 EV_FREQUENT_CHECK;
2242} 3111}
2243#endif 3112#endif
2244 3113
2245#if EV_FORK_ENABLE 3114#if EV_FORK_ENABLE
2246void 3115void
2247ev_fork_start (EV_P_ ev_fork *w) 3116ev_fork_start (EV_P_ ev_fork *w)
2248{ 3117{
2249 if (expect_false (ev_is_active (w))) 3118 if (expect_false (ev_is_active (w)))
2250 return; 3119 return;
3120
3121 EV_FREQUENT_CHECK;
2251 3122
2252 ev_start (EV_A_ (W)w, ++forkcnt); 3123 ev_start (EV_A_ (W)w, ++forkcnt);
2253 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3124 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2254 forks [forkcnt - 1] = w; 3125 forks [forkcnt - 1] = w;
3126
3127 EV_FREQUENT_CHECK;
2255} 3128}
2256 3129
2257void 3130void
2258ev_fork_stop (EV_P_ ev_fork *w) 3131ev_fork_stop (EV_P_ ev_fork *w)
2259{ 3132{
2260 clear_pending (EV_A_ (W)w); 3133 clear_pending (EV_A_ (W)w);
2261 if (expect_false (!ev_is_active (w))) 3134 if (expect_false (!ev_is_active (w)))
2262 return; 3135 return;
2263 3136
3137 EV_FREQUENT_CHECK;
3138
2264 { 3139 {
2265 int active = ((W)w)->active; 3140 int active = ev_active (w);
3141
2266 forks [active - 1] = forks [--forkcnt]; 3142 forks [active - 1] = forks [--forkcnt];
2267 ((W)forks [active - 1])->active = active; 3143 ev_active (forks [active - 1]) = active;
2268 } 3144 }
2269 3145
2270 ev_stop (EV_A_ (W)w); 3146 ev_stop (EV_A_ (W)w);
3147
3148 EV_FREQUENT_CHECK;
3149}
3150#endif
3151
3152#if EV_ASYNC_ENABLE
3153void
3154ev_async_start (EV_P_ ev_async *w)
3155{
3156 if (expect_false (ev_is_active (w)))
3157 return;
3158
3159 evpipe_init (EV_A);
3160
3161 EV_FREQUENT_CHECK;
3162
3163 ev_start (EV_A_ (W)w, ++asynccnt);
3164 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
3165 asyncs [asynccnt - 1] = w;
3166
3167 EV_FREQUENT_CHECK;
3168}
3169
3170void
3171ev_async_stop (EV_P_ ev_async *w)
3172{
3173 clear_pending (EV_A_ (W)w);
3174 if (expect_false (!ev_is_active (w)))
3175 return;
3176
3177 EV_FREQUENT_CHECK;
3178
3179 {
3180 int active = ev_active (w);
3181
3182 asyncs [active - 1] = asyncs [--asynccnt];
3183 ev_active (asyncs [active - 1]) = active;
3184 }
3185
3186 ev_stop (EV_A_ (W)w);
3187
3188 EV_FREQUENT_CHECK;
3189}
3190
3191void
3192ev_async_send (EV_P_ ev_async *w)
3193{
3194 w->sent = 1;
3195 evpipe_write (EV_A_ &gotasync);
2271} 3196}
2272#endif 3197#endif
2273 3198
2274/*****************************************************************************/ 3199/*****************************************************************************/
2275 3200
… …
2285once_cb (EV_P_ struct ev_once *once, int revents) 3210once_cb (EV_P_ struct ev_once *once, int revents)
2286{ 3211{
2287 void (*cb)(int revents, void *arg) = once->cb; 3212 void (*cb)(int revents, void *arg) = once->cb;
2288 void *arg = once->arg; 3213 void *arg = once->arg;
2289 3214
2290 ev_io_stop (EV_A_ &once->io); 3215 ev_io_stop (EV_A_ &once->io);
2291 ev_timer_stop (EV_A_ &once->to); 3216 ev_timer_stop (EV_A_ &once->to);
2292 ev_free (once); 3217 ev_free (once);
2293 3218
2294 cb (revents, arg); 3219 cb (revents, arg);
2295} 3220}
2296 3221
2297static void 3222static void
2298once_cb_io (EV_P_ ev_io *w, int revents) 3223once_cb_io (EV_P_ ev_io *w, int revents)
2299{ 3224{
2300 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3225 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3226
3227 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2301} 3228}
2302 3229
2303static void 3230static void
2304once_cb_to (EV_P_ ev_timer *w, int revents) 3231once_cb_to (EV_P_ ev_timer *w, int revents)
2305{ 3232{
2306 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3233 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3234
3235 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2307} 3236}
2308 3237
2309void 3238void
2310ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3239ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2311{ 3240{
… …
2333 ev_timer_set (&once->to, timeout, 0.); 3262 ev_timer_set (&once->to, timeout, 0.);
2334 ev_timer_start (EV_A_ &once->to); 3263 ev_timer_start (EV_A_ &once->to);
2335 } 3264 }
2336} 3265}
2337 3266
3267/*****************************************************************************/
3268
3269#if EV_WALK_ENABLE
3270void
3271ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3272{
3273 int i, j;
3274 ev_watcher_list *wl, *wn;
3275
3276 if (types & (EV_IO | EV_EMBED))
3277 for (i = 0; i < anfdmax; ++i)
3278 for (wl = anfds [i].head; wl; )
3279 {
3280 wn = wl->next;
3281
3282#if EV_EMBED_ENABLE
3283 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3284 {
3285 if (types & EV_EMBED)
3286 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3287 }
3288 else
3289#endif
3290#if EV_USE_INOTIFY
3291 if (ev_cb ((ev_io *)wl) == infy_cb)
3292 ;
3293 else
3294#endif
3295 if ((ev_io *)wl != &pipe_w)
3296 if (types & EV_IO)
3297 cb (EV_A_ EV_IO, wl);
3298
3299 wl = wn;
3300 }
3301
3302 if (types & (EV_TIMER | EV_STAT))
3303 for (i = timercnt + HEAP0; i-- > HEAP0; )
3304#if EV_STAT_ENABLE
3305 /*TODO: timer is not always active*/
3306 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3307 {
3308 if (types & EV_STAT)
3309 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3310 }
3311 else
3312#endif
3313 if (types & EV_TIMER)
3314 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3315
3316#if EV_PERIODIC_ENABLE
3317 if (types & EV_PERIODIC)
3318 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3319 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3320#endif
3321
3322#if EV_IDLE_ENABLE
3323 if (types & EV_IDLE)
3324 for (j = NUMPRI; i--; )
3325 for (i = idlecnt [j]; i--; )
3326 cb (EV_A_ EV_IDLE, idles [j][i]);
3327#endif
3328
3329#if EV_FORK_ENABLE
3330 if (types & EV_FORK)
3331 for (i = forkcnt; i--; )
3332 if (ev_cb (forks [i]) != embed_fork_cb)
3333 cb (EV_A_ EV_FORK, forks [i]);
3334#endif
3335
3336#if EV_ASYNC_ENABLE
3337 if (types & EV_ASYNC)
3338 for (i = asynccnt; i--; )
3339 cb (EV_A_ EV_ASYNC, asyncs [i]);
3340#endif
3341
3342 if (types & EV_PREPARE)
3343 for (i = preparecnt; i--; )
3344#if EV_EMBED_ENABLE
3345 if (ev_cb (prepares [i]) != embed_prepare_cb)
3346#endif
3347 cb (EV_A_ EV_PREPARE, prepares [i]);
3348
3349 if (types & EV_CHECK)
3350 for (i = checkcnt; i--; )
3351 cb (EV_A_ EV_CHECK, checks [i]);
3352
3353 if (types & EV_SIGNAL)
3354 for (i = 0; i < signalmax; ++i)
3355 for (wl = signals [i].head; wl; )
3356 {
3357 wn = wl->next;
3358 cb (EV_A_ EV_SIGNAL, wl);
3359 wl = wn;
3360 }
3361
3362 if (types & EV_CHILD)
3363 for (i = EV_PID_HASHSIZE; i--; )
3364 for (wl = childs [i]; wl; )
3365 {
3366 wn = wl->next;
3367 cb (EV_A_ EV_CHILD, wl);
3368 wl = wn;
3369 }
3370/* EV_STAT 0x00001000 /* stat data changed */
3371/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3372}
3373#endif
3374
2338#if EV_MULTIPLICITY 3375#if EV_MULTIPLICITY
2339 #include "ev_wrap.h" 3376 #include "ev_wrap.h"
2340#endif 3377#endif
2341 3378
2342#ifdef __cplusplus 3379#ifdef __cplusplus

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