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Comparing libev/ev.c (file contents):
Revision 1.189 by root, Thu Dec 20 10:12:22 2007 UTC vs.
Revision 1.291 by root, Mon Jun 29 04:44:18 2009 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * modification, are permitted provided that the following conditions are 8 * tion, are permitted provided that the following conditions are met:
9 * met: 9 *
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
25 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
26 * OF THE POSSIBILITY OF SUCH DAMAGE.
10 * 27 *
11 * * Redistributions of source code must retain the above copyright 28 * Alternatively, the contents of this file may be used under the terms of
12 * notice, this list of conditions and the following disclaimer. 29 * the GNU General Public License ("GPL") version 2 or any later version,
13 * 30 * in which case the provisions of the GPL are applicable instead of
14 * * Redistributions in binary form must reproduce the above 31 * the above. If you wish to allow the use of your version of this file
15 * copyright notice, this list of conditions and the following 32 * only under the terms of the GPL and not to allow others to use your
16 * disclaimer in the documentation and/or other materials provided 33 * version of this file under the BSD license, indicate your decision
17 * with the distribution. 34 * by deleting the provisions above and replace them with the notice
18 * 35 * and other provisions required by the GPL. If you do not delete the
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 36 * provisions above, a recipient may use your version of this file under
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 37 * either the BSD or the GPL.
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */ 38 */
31 39
32#ifdef __cplusplus 40#ifdef __cplusplus
33extern "C" { 41extern "C" {
34#endif 42#endif
35 43
44/* this big block deduces configuration from config.h */
36#ifndef EV_STANDALONE 45#ifndef EV_STANDALONE
37# ifdef EV_CONFIG_H 46# ifdef EV_CONFIG_H
38# include EV_CONFIG_H 47# include EV_CONFIG_H
39# else 48# else
40# include "config.h" 49# include "config.h"
41# endif 50# endif
42 51
52# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME
56# define EV_USE_REALTIME 0
57# endif
58# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1
60# endif
61# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL)
63# define EV_USE_CLOCK_SYSCALL 0
64# endif
65
43# if HAVE_CLOCK_GETTIME 66# if HAVE_CLOCK_GETTIME
44# ifndef EV_USE_MONOTONIC 67# ifndef EV_USE_MONOTONIC
45# define EV_USE_MONOTONIC 1 68# define EV_USE_MONOTONIC 1
46# endif 69# endif
47# ifndef EV_USE_REALTIME 70# ifndef EV_USE_REALTIME
48# define EV_USE_REALTIME 1 71# define EV_USE_REALTIME 0
49# endif 72# endif
50# else 73# else
51# ifndef EV_USE_MONOTONIC 74# ifndef EV_USE_MONOTONIC
52# define EV_USE_MONOTONIC 0 75# define EV_USE_MONOTONIC 0
53# endif 76# endif
54# ifndef EV_USE_REALTIME 77# ifndef EV_USE_REALTIME
55# define EV_USE_REALTIME 0 78# define EV_USE_REALTIME 0
79# endif
80# endif
81
82# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1
85# else
86# define EV_USE_NANOSLEEP 0
56# endif 87# endif
57# endif 88# endif
58 89
59# ifndef EV_USE_SELECT 90# ifndef EV_USE_SELECT
60# if HAVE_SELECT && HAVE_SYS_SELECT_H 91# if HAVE_SELECT && HAVE_SYS_SELECT_H
… …
102# else 133# else
103# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY 0
104# endif 135# endif
105# endif 136# endif
106 137
138# ifndef EV_USE_EVENTFD
139# if HAVE_EVENTFD
140# define EV_USE_EVENTFD 1
141# else
142# define EV_USE_EVENTFD 0
143# endif
144# endif
145
107#endif 146#endif
108 147
109#include <math.h> 148#include <math.h>
110#include <stdlib.h> 149#include <stdlib.h>
111#include <fcntl.h> 150#include <fcntl.h>
… …
129#ifndef _WIN32 168#ifndef _WIN32
130# include <sys/time.h> 169# include <sys/time.h>
131# include <sys/wait.h> 170# include <sys/wait.h>
132# include <unistd.h> 171# include <unistd.h>
133#else 172#else
173# include <io.h>
134# define WIN32_LEAN_AND_MEAN 174# define WIN32_LEAN_AND_MEAN
135# include <windows.h> 175# include <windows.h>
136# ifndef EV_SELECT_IS_WINSOCKET 176# ifndef EV_SELECT_IS_WINSOCKET
137# define EV_SELECT_IS_WINSOCKET 1 177# define EV_SELECT_IS_WINSOCKET 1
138# endif 178# endif
139#endif 179#endif
140 180
141/**/ 181/* this block tries to deduce configuration from header-defined symbols and defaults */
182
183#ifndef EV_USE_CLOCK_SYSCALL
184# if __linux && __GLIBC__ >= 2
185# define EV_USE_CLOCK_SYSCALL 1
186# else
187# define EV_USE_CLOCK_SYSCALL 0
188# endif
189#endif
142 190
143#ifndef EV_USE_MONOTONIC 191#ifndef EV_USE_MONOTONIC
192# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
193# define EV_USE_MONOTONIC 1
194# else
144# define EV_USE_MONOTONIC 0 195# define EV_USE_MONOTONIC 0
196# endif
145#endif 197#endif
146 198
147#ifndef EV_USE_REALTIME 199#ifndef EV_USE_REALTIME
148# define EV_USE_REALTIME 0 200# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
201#endif
202
203#ifndef EV_USE_NANOSLEEP
204# if _POSIX_C_SOURCE >= 199309L
205# define EV_USE_NANOSLEEP 1
206# else
207# define EV_USE_NANOSLEEP 0
208# endif
149#endif 209#endif
150 210
151#ifndef EV_USE_SELECT 211#ifndef EV_USE_SELECT
152# define EV_USE_SELECT 1 212# define EV_USE_SELECT 1
153#endif 213#endif
… …
159# define EV_USE_POLL 1 219# define EV_USE_POLL 1
160# endif 220# endif
161#endif 221#endif
162 222
163#ifndef EV_USE_EPOLL 223#ifndef EV_USE_EPOLL
224# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
225# define EV_USE_EPOLL 1
226# else
164# define EV_USE_EPOLL 0 227# define EV_USE_EPOLL 0
228# endif
165#endif 229#endif
166 230
167#ifndef EV_USE_KQUEUE 231#ifndef EV_USE_KQUEUE
168# define EV_USE_KQUEUE 0 232# define EV_USE_KQUEUE 0
169#endif 233#endif
… …
171#ifndef EV_USE_PORT 235#ifndef EV_USE_PORT
172# define EV_USE_PORT 0 236# define EV_USE_PORT 0
173#endif 237#endif
174 238
175#ifndef EV_USE_INOTIFY 239#ifndef EV_USE_INOTIFY
240# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
241# define EV_USE_INOTIFY 1
242# else
176# define EV_USE_INOTIFY 0 243# define EV_USE_INOTIFY 0
244# endif
177#endif 245#endif
178 246
179#ifndef EV_PID_HASHSIZE 247#ifndef EV_PID_HASHSIZE
180# if EV_MINIMAL 248# if EV_MINIMAL
181# define EV_PID_HASHSIZE 1 249# define EV_PID_HASHSIZE 1
… …
190# else 258# else
191# define EV_INOTIFY_HASHSIZE 16 259# define EV_INOTIFY_HASHSIZE 16
192# endif 260# endif
193#endif 261#endif
194 262
195/**/ 263#ifndef EV_USE_EVENTFD
264# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265# define EV_USE_EVENTFD 1
266# else
267# define EV_USE_EVENTFD 0
268# endif
269#endif
270
271#if 0 /* debugging */
272# define EV_VERIFY 3
273# define EV_USE_4HEAP 1
274# define EV_HEAP_CACHE_AT 1
275#endif
276
277#ifndef EV_VERIFY
278# define EV_VERIFY !EV_MINIMAL
279#endif
280
281#ifndef EV_USE_4HEAP
282# define EV_USE_4HEAP !EV_MINIMAL
283#endif
284
285#ifndef EV_HEAP_CACHE_AT
286# define EV_HEAP_CACHE_AT !EV_MINIMAL
287#endif
288
289/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
290/* which makes programs even slower. might work on other unices, too. */
291#if EV_USE_CLOCK_SYSCALL
292# include <syscall.h>
293# ifdef SYS_clock_gettime
294# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
295# undef EV_USE_MONOTONIC
296# define EV_USE_MONOTONIC 1
297# else
298# undef EV_USE_CLOCK_SYSCALL
299# define EV_USE_CLOCK_SYSCALL 0
300# endif
301#endif
302
303/* this block fixes any misconfiguration where we know we run into trouble otherwise */
196 304
197#ifndef CLOCK_MONOTONIC 305#ifndef CLOCK_MONOTONIC
198# undef EV_USE_MONOTONIC 306# undef EV_USE_MONOTONIC
199# define EV_USE_MONOTONIC 0 307# define EV_USE_MONOTONIC 0
200#endif 308#endif
… …
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
… …
375 568
376ev_tstamp 569ev_tstamp
377ev_time (void) 570ev_time (void)
378{ 571{
379#if EV_USE_REALTIME 572#if EV_USE_REALTIME
573 if (expect_true (have_realtime))
574 {
380 struct timespec ts; 575 struct timespec ts;
381 clock_gettime (CLOCK_REALTIME, &ts); 576 clock_gettime (CLOCK_REALTIME, &ts);
382 return ts.tv_sec + ts.tv_nsec * 1e-9; 577 return ts.tv_sec + ts.tv_nsec * 1e-9;
383#else 578 }
579#endif
580
384 struct timeval tv; 581 struct timeval tv;
385 gettimeofday (&tv, 0); 582 gettimeofday (&tv, 0);
386 return tv.tv_sec + tv.tv_usec * 1e-6; 583 return tv.tv_sec + tv.tv_usec * 1e-6;
387#endif
388} 584}
389 585
390ev_tstamp inline_size 586inline_size ev_tstamp
391get_clock (void) 587get_clock (void)
392{ 588{
393#if EV_USE_MONOTONIC 589#if EV_USE_MONOTONIC
394 if (expect_true (have_monotonic)) 590 if (expect_true (have_monotonic))
395 { 591 {
… …
408{ 604{
409 return ev_rt_now; 605 return ev_rt_now;
410} 606}
411#endif 607#endif
412 608
413int inline_size 609void
610ev_sleep (ev_tstamp delay)
611{
612 if (delay > 0.)
613 {
614#if EV_USE_NANOSLEEP
615 struct timespec ts;
616
617 ts.tv_sec = (time_t)delay;
618 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
619
620 nanosleep (&ts, 0);
621#elif defined(_WIN32)
622 Sleep ((unsigned long)(delay * 1e3));
623#else
624 struct timeval tv;
625
626 tv.tv_sec = (time_t)delay;
627 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
628
629 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
630 /* somehting nto guaranteed by newer posix versions, but guaranteed */
631 /* by older ones */
632 select (0, 0, 0, 0, &tv);
633#endif
634 }
635}
636
637/*****************************************************************************/
638
639#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
640
641/* find a suitable new size for the given array, */
642/* hopefully by rounding to a ncie-to-malloc size */
643inline_size int
414array_nextsize (int elem, int cur, int cnt) 644array_nextsize (int elem, int cur, int cnt)
415{ 645{
416 int ncur = cur + 1; 646 int ncur = cur + 1;
417 647
418 do 648 do
419 ncur <<= 1; 649 ncur <<= 1;
420 while (cnt > ncur); 650 while (cnt > ncur);
421 651
422 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ 652 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
423 if (elem * ncur > 4096) 653 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
424 { 654 {
425 ncur *= elem; 655 ncur *= elem;
426 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; 656 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
427 ncur = ncur - sizeof (void *) * 4; 657 ncur = ncur - sizeof (void *) * 4;
428 ncur /= elem; 658 ncur /= elem;
429 } 659 }
430 660
431 return ncur; 661 return ncur;
… …
435array_realloc (int elem, void *base, int *cur, int cnt) 665array_realloc (int elem, void *base, int *cur, int cnt)
436{ 666{
437 *cur = array_nextsize (elem, *cur, cnt); 667 *cur = array_nextsize (elem, *cur, cnt);
438 return ev_realloc (base, elem * *cur); 668 return ev_realloc (base, elem * *cur);
439} 669}
670
671#define array_init_zero(base,count) \
672 memset ((void *)(base), 0, sizeof (*(base)) * (count))
440 673
441#define array_needsize(type,base,cur,cnt,init) \ 674#define array_needsize(type,base,cur,cnt,init) \
442 if (expect_false ((cnt) > (cur))) \ 675 if (expect_false ((cnt) > (cur))) \
443 { \ 676 { \
444 int ocur_ = (cur); \ 677 int ocur_ = (cur); \
… …
456 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 689 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
457 } 690 }
458#endif 691#endif
459 692
460#define array_free(stem, idx) \ 693#define array_free(stem, idx) \
461 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 694 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
462 695
463/*****************************************************************************/ 696/*****************************************************************************/
697
698/* dummy callback for pending events */
699static void noinline
700pendingcb (EV_P_ ev_prepare *w, int revents)
701{
702}
464 703
465void noinline 704void noinline
466ev_feed_event (EV_P_ void *w, int revents) 705ev_feed_event (EV_P_ void *w, int revents)
467{ 706{
468 W w_ = (W)w; 707 W w_ = (W)w;
… …
477 pendings [pri][w_->pending - 1].w = w_; 716 pendings [pri][w_->pending - 1].w = w_;
478 pendings [pri][w_->pending - 1].events = revents; 717 pendings [pri][w_->pending - 1].events = revents;
479 } 718 }
480} 719}
481 720
482void inline_speed 721inline_speed void
722feed_reverse (EV_P_ W w)
723{
724 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
725 rfeeds [rfeedcnt++] = w;
726}
727
728inline_size void
729feed_reverse_done (EV_P_ int revents)
730{
731 do
732 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
733 while (rfeedcnt);
734}
735
736inline_speed void
483queue_events (EV_P_ W *events, int eventcnt, int type) 737queue_events (EV_P_ W *events, int eventcnt, int type)
484{ 738{
485 int i; 739 int i;
486 740
487 for (i = 0; i < eventcnt; ++i) 741 for (i = 0; i < eventcnt; ++i)
488 ev_feed_event (EV_A_ events [i], type); 742 ev_feed_event (EV_A_ events [i], type);
489} 743}
490 744
491/*****************************************************************************/ 745/*****************************************************************************/
492 746
493void inline_size 747inline_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) 748fd_event (EV_P_ int fd, int revents)
508{ 749{
509 ANFD *anfd = anfds + fd; 750 ANFD *anfd = anfds + fd;
510 ev_io *w; 751 ev_io *w;
511 752
… …
523{ 764{
524 if (fd >= 0 && fd < anfdmax) 765 if (fd >= 0 && fd < anfdmax)
525 fd_event (EV_A_ fd, revents); 766 fd_event (EV_A_ fd, revents);
526} 767}
527 768
528void inline_size 769/* make sure the external fd watch events are in-sync */
770/* with the kernel/libev internal state */
771inline_size void
529fd_reify (EV_P) 772fd_reify (EV_P)
530{ 773{
531 int i; 774 int i;
532 775
533 for (i = 0; i < fdchangecnt; ++i) 776 for (i = 0; i < fdchangecnt; ++i)
… …
542 events |= (unsigned char)w->events; 785 events |= (unsigned char)w->events;
543 786
544#if EV_SELECT_IS_WINSOCKET 787#if EV_SELECT_IS_WINSOCKET
545 if (events) 788 if (events)
546 { 789 {
547 unsigned long argp; 790 unsigned long arg;
791 #ifdef EV_FD_TO_WIN32_HANDLE
792 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
793 #else
548 anfd->handle = _get_osfhandle (fd); 794 anfd->handle = _get_osfhandle (fd);
795 #endif
549 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 796 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
550 } 797 }
551#endif 798#endif
552 799
553 { 800 {
554 unsigned char o_events = anfd->events; 801 unsigned char o_events = anfd->events;
555 unsigned char o_reify = anfd->reify; 802 unsigned char o_reify = anfd->reify;
556 803
557 anfd->reify = 0; 804 anfd->reify = 0;
558 anfd->events = events; 805 anfd->events = events;
559 806
560 if (o_events != events || o_reify & EV_IOFDSET) 807 if (o_events != events || o_reify & EV__IOFDSET)
561 backend_modify (EV_A_ fd, o_events, events); 808 backend_modify (EV_A_ fd, o_events, events);
562 } 809 }
563 } 810 }
564 811
565 fdchangecnt = 0; 812 fdchangecnt = 0;
566} 813}
567 814
568void inline_size 815/* something about the given fd changed */
816inline_size void
569fd_change (EV_P_ int fd, int flags) 817fd_change (EV_P_ int fd, int flags)
570{ 818{
571 unsigned char reify = anfds [fd].reify; 819 unsigned char reify = anfds [fd].reify;
572 anfds [fd].reify |= flags; 820 anfds [fd].reify |= flags;
573 821
… …
577 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 825 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
578 fdchanges [fdchangecnt - 1] = fd; 826 fdchanges [fdchangecnt - 1] = fd;
579 } 827 }
580} 828}
581 829
582void inline_speed 830/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
831inline_speed void
583fd_kill (EV_P_ int fd) 832fd_kill (EV_P_ int fd)
584{ 833{
585 ev_io *w; 834 ev_io *w;
586 835
587 while ((w = (ev_io *)anfds [fd].head)) 836 while ((w = (ev_io *)anfds [fd].head))
… …
589 ev_io_stop (EV_A_ w); 838 ev_io_stop (EV_A_ w);
590 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 839 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
591 } 840 }
592} 841}
593 842
594int inline_size 843/* check whether the given fd is atcually valid, for error recovery */
844inline_size int
595fd_valid (int fd) 845fd_valid (int fd)
596{ 846{
597#ifdef _WIN32 847#ifdef _WIN32
598 return _get_osfhandle (fd) != -1; 848 return _get_osfhandle (fd) != -1;
599#else 849#else
… …
607{ 857{
608 int fd; 858 int fd;
609 859
610 for (fd = 0; fd < anfdmax; ++fd) 860 for (fd = 0; fd < anfdmax; ++fd)
611 if (anfds [fd].events) 861 if (anfds [fd].events)
612 if (!fd_valid (fd) == -1 && errno == EBADF) 862 if (!fd_valid (fd) && errno == EBADF)
613 fd_kill (EV_A_ fd); 863 fd_kill (EV_A_ fd);
614} 864}
615 865
616/* called on ENOMEM in select/poll to kill some fds and retry */ 866/* called on ENOMEM in select/poll to kill some fds and retry */
617static void noinline 867static void noinline
… …
635 885
636 for (fd = 0; fd < anfdmax; ++fd) 886 for (fd = 0; fd < anfdmax; ++fd)
637 if (anfds [fd].events) 887 if (anfds [fd].events)
638 { 888 {
639 anfds [fd].events = 0; 889 anfds [fd].events = 0;
890 anfds [fd].emask = 0;
640 fd_change (EV_A_ fd, EV_IOFDSET | 1); 891 fd_change (EV_A_ fd, EV__IOFDSET | 1);
641 } 892 }
642} 893}
643 894
644/*****************************************************************************/ 895/*****************************************************************************/
645 896
646void inline_speed 897/*
647upheap (WT *heap, int k) 898 * the heap functions want a real array index. array index 0 uis guaranteed to not
648{ 899 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
649 WT w = heap [k]; 900 * the branching factor of the d-tree.
901 */
650 902
651 while (k) 903/*
652 { 904 * at the moment we allow libev the luxury of two heaps,
653 int p = (k - 1) >> 1; 905 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
906 * which is more cache-efficient.
907 * the difference is about 5% with 50000+ watchers.
908 */
909#if EV_USE_4HEAP
654 910
655 if (heap [p]->at <= w->at) 911#define DHEAP 4
912#define HEAP0 (DHEAP - 1) /* index of first element in heap */
913#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
914#define UPHEAP_DONE(p,k) ((p) == (k))
915
916/* away from the root */
917inline_speed void
918downheap (ANHE *heap, int N, int k)
919{
920 ANHE he = heap [k];
921 ANHE *E = heap + N + HEAP0;
922
923 for (;;)
924 {
925 ev_tstamp minat;
926 ANHE *minpos;
927 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
928
929 /* find minimum child */
930 if (expect_true (pos + DHEAP - 1 < E))
931 {
932 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
933 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
934 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
935 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
936 }
937 else if (pos < E)
938 {
939 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
940 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
941 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
942 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
943 }
944 else
656 break; 945 break;
657 946
947 if (ANHE_at (he) <= minat)
948 break;
949
950 heap [k] = *minpos;
951 ev_active (ANHE_w (*minpos)) = k;
952
953 k = minpos - heap;
954 }
955
956 heap [k] = he;
957 ev_active (ANHE_w (he)) = k;
958}
959
960#else /* 4HEAP */
961
962#define HEAP0 1
963#define HPARENT(k) ((k) >> 1)
964#define UPHEAP_DONE(p,k) (!(p))
965
966/* away from the root */
967inline_speed void
968downheap (ANHE *heap, int N, int k)
969{
970 ANHE he = heap [k];
971
972 for (;;)
973 {
974 int c = k << 1;
975
976 if (c > N + HEAP0 - 1)
977 break;
978
979 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
980 ? 1 : 0;
981
982 if (ANHE_at (he) <= ANHE_at (heap [c]))
983 break;
984
985 heap [k] = heap [c];
986 ev_active (ANHE_w (heap [k])) = k;
987
988 k = c;
989 }
990
991 heap [k] = he;
992 ev_active (ANHE_w (he)) = k;
993}
994#endif
995
996/* towards the root */
997inline_speed void
998upheap (ANHE *heap, int k)
999{
1000 ANHE he = heap [k];
1001
1002 for (;;)
1003 {
1004 int p = HPARENT (k);
1005
1006 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1007 break;
1008
658 heap [k] = heap [p]; 1009 heap [k] = heap [p];
659 ((W)heap [k])->active = k + 1; 1010 ev_active (ANHE_w (heap [k])) = k;
660 k = p; 1011 k = p;
661 } 1012 }
662 1013
663 heap [k] = w; 1014 heap [k] = he;
664 ((W)heap [k])->active = k + 1; 1015 ev_active (ANHE_w (he)) = k;
665} 1016}
666 1017
667void inline_speed 1018/* move an element suitably so it is in a correct place */
668downheap (WT *heap, int N, int k) 1019inline_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) 1020adjustheap (ANHE *heap, int N, int k)
697{ 1021{
1022 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
698 upheap (heap, k); 1023 upheap (heap, k);
1024 else
699 downheap (heap, N, k); 1025 downheap (heap, N, k);
1026}
1027
1028/* rebuild the heap: this function is used only once and executed rarely */
1029inline_size void
1030reheap (ANHE *heap, int N)
1031{
1032 int i;
1033
1034 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1035 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1036 for (i = 0; i < N; ++i)
1037 upheap (heap, i + HEAP0);
700} 1038}
701 1039
702/*****************************************************************************/ 1040/*****************************************************************************/
703 1041
1042/* associate signal watchers to a signal signal */
704typedef struct 1043typedef struct
705{ 1044{
706 WL head; 1045 WL head;
707 sig_atomic_t volatile gotsig; 1046 EV_ATOMIC_T gotsig;
708} ANSIG; 1047} ANSIG;
709 1048
710static ANSIG *signals; 1049static ANSIG *signals;
711static int signalmax; 1050static int signalmax;
712 1051
713static int sigpipe [2]; 1052static EV_ATOMIC_T gotsig;
714static sig_atomic_t volatile gotsig;
715static ev_io sigev;
716 1053
717void inline_size 1054/*****************************************************************************/
718signals_init (ANSIG *base, int count)
719{
720 while (count--)
721 {
722 base->head = 0;
723 base->gotsig = 0;
724 1055
725 ++base; 1056/* used to prepare libev internal fd's */
726 } 1057/* this is not fork-safe */
727} 1058inline_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) 1059fd_intern (int fd)
782{ 1060{
783#ifdef _WIN32 1061#ifdef _WIN32
784 int arg = 1; 1062 unsigned long arg = 1;
785 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1063 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
786#else 1064#else
787 fcntl (fd, F_SETFD, FD_CLOEXEC); 1065 fcntl (fd, F_SETFD, FD_CLOEXEC);
788 fcntl (fd, F_SETFL, O_NONBLOCK); 1066 fcntl (fd, F_SETFL, O_NONBLOCK);
789#endif 1067#endif
790} 1068}
791 1069
792static void noinline 1070static void noinline
793siginit (EV_P) 1071evpipe_init (EV_P)
794{ 1072{
1073 if (!ev_is_active (&pipe_w))
1074 {
1075#if EV_USE_EVENTFD
1076 if ((evfd = eventfd (0, 0)) >= 0)
1077 {
1078 evpipe [0] = -1;
1079 fd_intern (evfd);
1080 ev_io_set (&pipe_w, evfd, EV_READ);
1081 }
1082 else
1083#endif
1084 {
1085 while (pipe (evpipe))
1086 ev_syserr ("(libev) error creating signal/async pipe");
1087
795 fd_intern (sigpipe [0]); 1088 fd_intern (evpipe [0]);
796 fd_intern (sigpipe [1]); 1089 fd_intern (evpipe [1]);
1090 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1091 }
797 1092
798 ev_io_set (&sigev, sigpipe [0], EV_READ);
799 ev_io_start (EV_A_ &sigev); 1093 ev_io_start (EV_A_ &pipe_w);
800 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1094 ev_unref (EV_A); /* watcher should not keep loop alive */
1095 }
1096}
1097
1098inline_size void
1099evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1100{
1101 if (!*flag)
1102 {
1103 int old_errno = errno; /* save errno because write might clobber it */
1104
1105 *flag = 1;
1106
1107#if EV_USE_EVENTFD
1108 if (evfd >= 0)
1109 {
1110 uint64_t counter = 1;
1111 write (evfd, &counter, sizeof (uint64_t));
1112 }
1113 else
1114#endif
1115 write (evpipe [1], &old_errno, 1);
1116
1117 errno = old_errno;
1118 }
1119}
1120
1121/* called whenever the libev signal pipe */
1122/* got some events (signal, async) */
1123static void
1124pipecb (EV_P_ ev_io *iow, int revents)
1125{
1126#if EV_USE_EVENTFD
1127 if (evfd >= 0)
1128 {
1129 uint64_t counter;
1130 read (evfd, &counter, sizeof (uint64_t));
1131 }
1132 else
1133#endif
1134 {
1135 char dummy;
1136 read (evpipe [0], &dummy, 1);
1137 }
1138
1139 if (gotsig && ev_is_default_loop (EV_A))
1140 {
1141 int signum;
1142 gotsig = 0;
1143
1144 for (signum = signalmax; signum--; )
1145 if (signals [signum].gotsig)
1146 ev_feed_signal_event (EV_A_ signum + 1);
1147 }
1148
1149#if EV_ASYNC_ENABLE
1150 if (gotasync)
1151 {
1152 int i;
1153 gotasync = 0;
1154
1155 for (i = asynccnt; i--; )
1156 if (asyncs [i]->sent)
1157 {
1158 asyncs [i]->sent = 0;
1159 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1160 }
1161 }
1162#endif
801} 1163}
802 1164
803/*****************************************************************************/ 1165/*****************************************************************************/
804 1166
1167static void
1168ev_sighandler (int signum)
1169{
1170#if EV_MULTIPLICITY
1171 struct ev_loop *loop = &default_loop_struct;
1172#endif
1173
1174#if _WIN32
1175 signal (signum, ev_sighandler);
1176#endif
1177
1178 signals [signum - 1].gotsig = 1;
1179 evpipe_write (EV_A_ &gotsig);
1180}
1181
1182void noinline
1183ev_feed_signal_event (EV_P_ int signum)
1184{
1185 WL w;
1186
1187#if EV_MULTIPLICITY
1188 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1189#endif
1190
1191 --signum;
1192
1193 if (signum < 0 || signum >= signalmax)
1194 return;
1195
1196 signals [signum].gotsig = 0;
1197
1198 for (w = signals [signum].head; w; w = w->next)
1199 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1200}
1201
1202/*****************************************************************************/
1203
805static WL childs [EV_PID_HASHSIZE]; 1204static WL childs [EV_PID_HASHSIZE];
806 1205
807#ifndef _WIN32 1206#ifndef _WIN32
808 1207
809static ev_signal childev; 1208static ev_signal childev;
810 1209
811void inline_speed 1210#ifndef WIFCONTINUED
1211# define WIFCONTINUED(status) 0
1212#endif
1213
1214/* handle a single child status event */
1215inline_speed void
812child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 1216child_reap (EV_P_ int chain, int pid, int status)
813{ 1217{
814 ev_child *w; 1218 ev_child *w;
1219 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
815 1220
816 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1221 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1222 {
817 if (w->pid == pid || !w->pid) 1223 if ((w->pid == pid || !w->pid)
1224 && (!traced || (w->flags & 1)))
818 { 1225 {
819 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ 1226 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
820 w->rpid = pid; 1227 w->rpid = pid;
821 w->rstatus = status; 1228 w->rstatus = status;
822 ev_feed_event (EV_A_ (W)w, EV_CHILD); 1229 ev_feed_event (EV_A_ (W)w, EV_CHILD);
823 } 1230 }
1231 }
824} 1232}
825 1233
826#ifndef WCONTINUED 1234#ifndef WCONTINUED
827# define WCONTINUED 0 1235# define WCONTINUED 0
828#endif 1236#endif
829 1237
1238/* called on sigchld etc., calls waitpid */
830static void 1239static void
831childcb (EV_P_ ev_signal *sw, int revents) 1240childcb (EV_P_ ev_signal *sw, int revents)
832{ 1241{
833 int pid, status; 1242 int pid, status;
834 1243
… …
837 if (!WCONTINUED 1246 if (!WCONTINUED
838 || errno != EINVAL 1247 || errno != EINVAL
839 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) 1248 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
840 return; 1249 return;
841 1250
842 /* make sure we are called again until all childs have been reaped */ 1251 /* make sure we are called again until all children have been reaped */
843 /* we need to do it this way so that the callback gets called before we continue */ 1252 /* we need to do it this way so that the callback gets called before we continue */
844 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1253 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
845 1254
846 child_reap (EV_A_ sw, pid, pid, status); 1255 child_reap (EV_A_ pid, pid, status);
847 if (EV_PID_HASHSIZE > 1) 1256 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 */ 1257 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
849} 1258}
850 1259
851#endif 1260#endif
852 1261
853/*****************************************************************************/ 1262/*****************************************************************************/
… …
915 /* kqueue is borked on everything but netbsd apparently */ 1324 /* kqueue is borked on everything but netbsd apparently */
916 /* it usually doesn't work correctly on anything but sockets and pipes */ 1325 /* it usually doesn't work correctly on anything but sockets and pipes */
917 flags &= ~EVBACKEND_KQUEUE; 1326 flags &= ~EVBACKEND_KQUEUE;
918#endif 1327#endif
919#ifdef __APPLE__ 1328#ifdef __APPLE__
920 // flags &= ~EVBACKEND_KQUEUE; for documentation 1329 /* only select works correctly on that "unix-certified" platform */
921 flags &= ~EVBACKEND_POLL; 1330 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1331 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
922#endif 1332#endif
923 1333
924 return flags; 1334 return flags;
925} 1335}
926 1336
927unsigned int 1337unsigned int
928ev_embeddable_backends (void) 1338ev_embeddable_backends (void)
929{ 1339{
930 return EVBACKEND_EPOLL 1340 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
931 | EVBACKEND_KQUEUE 1341
932 | EVBACKEND_PORT; 1342 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1343 /* please fix it and tell me how to detect the fix */
1344 flags &= ~EVBACKEND_EPOLL;
1345
1346 return flags;
933} 1347}
934 1348
935unsigned int 1349unsigned int
936ev_backend (EV_P) 1350ev_backend (EV_P)
937{ 1351{
… …
942ev_loop_count (EV_P) 1356ev_loop_count (EV_P)
943{ 1357{
944 return loop_count; 1358 return loop_count;
945} 1359}
946 1360
1361void
1362ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1363{
1364 io_blocktime = interval;
1365}
1366
1367void
1368ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1369{
1370 timeout_blocktime = interval;
1371}
1372
1373/* initialise a loop structure, must be zero-initialised */
947static void noinline 1374static void noinline
948loop_init (EV_P_ unsigned int flags) 1375loop_init (EV_P_ unsigned int flags)
949{ 1376{
950 if (!backend) 1377 if (!backend)
951 { 1378 {
1379#if EV_USE_REALTIME
1380 if (!have_realtime)
1381 {
1382 struct timespec ts;
1383
1384 if (!clock_gettime (CLOCK_REALTIME, &ts))
1385 have_realtime = 1;
1386 }
1387#endif
1388
952#if EV_USE_MONOTONIC 1389#if EV_USE_MONOTONIC
1390 if (!have_monotonic)
953 { 1391 {
954 struct timespec ts; 1392 struct timespec ts;
1393
955 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1394 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
956 have_monotonic = 1; 1395 have_monotonic = 1;
957 } 1396 }
958#endif 1397#endif
959 1398
960 ev_rt_now = ev_time (); 1399 ev_rt_now = ev_time ();
961 mn_now = get_clock (); 1400 mn_now = get_clock ();
962 now_floor = mn_now; 1401 now_floor = mn_now;
963 rtmn_diff = ev_rt_now - mn_now; 1402 rtmn_diff = ev_rt_now - mn_now;
1403
1404 io_blocktime = 0.;
1405 timeout_blocktime = 0.;
1406 backend = 0;
1407 backend_fd = -1;
1408 gotasync = 0;
1409#if EV_USE_INOTIFY
1410 fs_fd = -2;
1411#endif
964 1412
965 /* pid check not overridable via env */ 1413 /* pid check not overridable via env */
966#ifndef _WIN32 1414#ifndef _WIN32
967 if (flags & EVFLAG_FORKCHECK) 1415 if (flags & EVFLAG_FORKCHECK)
968 curpid = getpid (); 1416 curpid = getpid ();
… …
971 if (!(flags & EVFLAG_NOENV) 1419 if (!(flags & EVFLAG_NOENV)
972 && !enable_secure () 1420 && !enable_secure ()
973 && getenv ("LIBEV_FLAGS")) 1421 && getenv ("LIBEV_FLAGS"))
974 flags = atoi (getenv ("LIBEV_FLAGS")); 1422 flags = atoi (getenv ("LIBEV_FLAGS"));
975 1423
976 if (!(flags & 0x0000ffffUL)) 1424 if (!(flags & 0x0000ffffU))
977 flags |= ev_recommended_backends (); 1425 flags |= ev_recommended_backends ();
978
979 backend = 0;
980 backend_fd = -1;
981#if EV_USE_INOTIFY
982 fs_fd = -2;
983#endif
984 1426
985#if EV_USE_PORT 1427#if EV_USE_PORT
986 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1428 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
987#endif 1429#endif
988#if EV_USE_KQUEUE 1430#if EV_USE_KQUEUE
… …
996#endif 1438#endif
997#if EV_USE_SELECT 1439#if EV_USE_SELECT
998 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1440 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
999#endif 1441#endif
1000 1442
1443 ev_prepare_init (&pending_w, pendingcb);
1444
1001 ev_init (&sigev, sigcb); 1445 ev_init (&pipe_w, pipecb);
1002 ev_set_priority (&sigev, EV_MAXPRI); 1446 ev_set_priority (&pipe_w, EV_MAXPRI);
1003 } 1447 }
1004} 1448}
1005 1449
1450/* free up a loop structure */
1006static void noinline 1451static void noinline
1007loop_destroy (EV_P) 1452loop_destroy (EV_P)
1008{ 1453{
1009 int i; 1454 int i;
1455
1456 if (ev_is_active (&pipe_w))
1457 {
1458 ev_ref (EV_A); /* signal watcher */
1459 ev_io_stop (EV_A_ &pipe_w);
1460
1461#if EV_USE_EVENTFD
1462 if (evfd >= 0)
1463 close (evfd);
1464#endif
1465
1466 if (evpipe [0] >= 0)
1467 {
1468 close (evpipe [0]);
1469 close (evpipe [1]);
1470 }
1471 }
1010 1472
1011#if EV_USE_INOTIFY 1473#if EV_USE_INOTIFY
1012 if (fs_fd >= 0) 1474 if (fs_fd >= 0)
1013 close (fs_fd); 1475 close (fs_fd);
1014#endif 1476#endif
… …
1041 } 1503 }
1042 1504
1043 ev_free (anfds); anfdmax = 0; 1505 ev_free (anfds); anfdmax = 0;
1044 1506
1045 /* have to use the microsoft-never-gets-it-right macro */ 1507 /* have to use the microsoft-never-gets-it-right macro */
1508 array_free (rfeed, EMPTY);
1046 array_free (fdchange, EMPTY); 1509 array_free (fdchange, EMPTY);
1047 array_free (timer, EMPTY); 1510 array_free (timer, EMPTY);
1048#if EV_PERIODIC_ENABLE 1511#if EV_PERIODIC_ENABLE
1049 array_free (periodic, EMPTY); 1512 array_free (periodic, EMPTY);
1050#endif 1513#endif
1051#if EV_FORK_ENABLE 1514#if EV_FORK_ENABLE
1052 array_free (fork, EMPTY); 1515 array_free (fork, EMPTY);
1053#endif 1516#endif
1054 array_free (prepare, EMPTY); 1517 array_free (prepare, EMPTY);
1055 array_free (check, EMPTY); 1518 array_free (check, EMPTY);
1519#if EV_ASYNC_ENABLE
1520 array_free (async, EMPTY);
1521#endif
1056 1522
1057 backend = 0; 1523 backend = 0;
1058} 1524}
1059 1525
1526#if EV_USE_INOTIFY
1060void inline_size infy_fork (EV_P); 1527inline_size void infy_fork (EV_P);
1528#endif
1061 1529
1062void inline_size 1530inline_size void
1063loop_fork (EV_P) 1531loop_fork (EV_P)
1064{ 1532{
1065#if EV_USE_PORT 1533#if EV_USE_PORT
1066 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1534 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1067#endif 1535#endif
… …
1073#endif 1541#endif
1074#if EV_USE_INOTIFY 1542#if EV_USE_INOTIFY
1075 infy_fork (EV_A); 1543 infy_fork (EV_A);
1076#endif 1544#endif
1077 1545
1078 if (ev_is_active (&sigev)) 1546 if (ev_is_active (&pipe_w))
1079 { 1547 {
1080 /* default loop */ 1548 /* this "locks" the handlers against writing to the pipe */
1549 /* while we modify the fd vars */
1550 gotsig = 1;
1551#if EV_ASYNC_ENABLE
1552 gotasync = 1;
1553#endif
1081 1554
1082 ev_ref (EV_A); 1555 ev_ref (EV_A);
1083 ev_io_stop (EV_A_ &sigev); 1556 ev_io_stop (EV_A_ &pipe_w);
1557
1558#if EV_USE_EVENTFD
1559 if (evfd >= 0)
1560 close (evfd);
1561#endif
1562
1563 if (evpipe [0] >= 0)
1564 {
1084 close (sigpipe [0]); 1565 close (evpipe [0]);
1085 close (sigpipe [1]); 1566 close (evpipe [1]);
1567 }
1086 1568
1087 while (pipe (sigpipe))
1088 syserr ("(libev) error creating pipe");
1089
1090 siginit (EV_A); 1569 evpipe_init (EV_A);
1570 /* now iterate over everything, in case we missed something */
1571 pipecb (EV_A_ &pipe_w, EV_READ);
1091 } 1572 }
1092 1573
1093 postfork = 0; 1574 postfork = 0;
1094} 1575}
1095 1576
1096#if EV_MULTIPLICITY 1577#if EV_MULTIPLICITY
1578
1097struct ev_loop * 1579struct ev_loop *
1098ev_loop_new (unsigned int flags) 1580ev_loop_new (unsigned int flags)
1099{ 1581{
1100 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1582 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1101 1583
… …
1117} 1599}
1118 1600
1119void 1601void
1120ev_loop_fork (EV_P) 1602ev_loop_fork (EV_P)
1121{ 1603{
1122 postfork = 1; 1604 postfork = 1; /* must be in line with ev_default_fork */
1123} 1605}
1124 1606
1607#if EV_VERIFY
1608static void noinline
1609verify_watcher (EV_P_ W w)
1610{
1611 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1612
1613 if (w->pending)
1614 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1615}
1616
1617static void noinline
1618verify_heap (EV_P_ ANHE *heap, int N)
1619{
1620 int i;
1621
1622 for (i = HEAP0; i < N + HEAP0; ++i)
1623 {
1624 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1625 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1626 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1627
1628 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1629 }
1630}
1631
1632static void noinline
1633array_verify (EV_P_ W *ws, int cnt)
1634{
1635 while (cnt--)
1636 {
1637 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1638 verify_watcher (EV_A_ ws [cnt]);
1639 }
1640}
1641#endif
1642
1643void
1644ev_loop_verify (EV_P)
1645{
1646#if EV_VERIFY
1647 int i;
1648 WL w;
1649
1650 assert (activecnt >= -1);
1651
1652 assert (fdchangemax >= fdchangecnt);
1653 for (i = 0; i < fdchangecnt; ++i)
1654 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1655
1656 assert (anfdmax >= 0);
1657 for (i = 0; i < anfdmax; ++i)
1658 for (w = anfds [i].head; w; w = w->next)
1659 {
1660 verify_watcher (EV_A_ (W)w);
1661 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1662 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1663 }
1664
1665 assert (timermax >= timercnt);
1666 verify_heap (EV_A_ timers, timercnt);
1667
1668#if EV_PERIODIC_ENABLE
1669 assert (periodicmax >= periodiccnt);
1670 verify_heap (EV_A_ periodics, periodiccnt);
1671#endif
1672
1673 for (i = NUMPRI; i--; )
1674 {
1675 assert (pendingmax [i] >= pendingcnt [i]);
1676#if EV_IDLE_ENABLE
1677 assert (idleall >= 0);
1678 assert (idlemax [i] >= idlecnt [i]);
1679 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1680#endif
1681 }
1682
1683#if EV_FORK_ENABLE
1684 assert (forkmax >= forkcnt);
1685 array_verify (EV_A_ (W *)forks, forkcnt);
1686#endif
1687
1688#if EV_ASYNC_ENABLE
1689 assert (asyncmax >= asynccnt);
1690 array_verify (EV_A_ (W *)asyncs, asynccnt);
1691#endif
1692
1693 assert (preparemax >= preparecnt);
1694 array_verify (EV_A_ (W *)prepares, preparecnt);
1695
1696 assert (checkmax >= checkcnt);
1697 array_verify (EV_A_ (W *)checks, checkcnt);
1698
1699# if 0
1700 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1701 for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1125#endif 1702# endif
1703#endif
1704}
1705
1706#endif /* multiplicity */
1126 1707
1127#if EV_MULTIPLICITY 1708#if EV_MULTIPLICITY
1128struct ev_loop * 1709struct ev_loop *
1129ev_default_loop_init (unsigned int flags) 1710ev_default_loop_init (unsigned int flags)
1130#else 1711#else
1131int 1712int
1132ev_default_loop (unsigned int flags) 1713ev_default_loop (unsigned int flags)
1133#endif 1714#endif
1134{ 1715{
1135 if (sigpipe [0] == sigpipe [1])
1136 if (pipe (sigpipe))
1137 return 0;
1138
1139 if (!ev_default_loop_ptr) 1716 if (!ev_default_loop_ptr)
1140 { 1717 {
1141#if EV_MULTIPLICITY 1718#if EV_MULTIPLICITY
1142 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1719 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1143#else 1720#else
… …
1146 1723
1147 loop_init (EV_A_ flags); 1724 loop_init (EV_A_ flags);
1148 1725
1149 if (ev_backend (EV_A)) 1726 if (ev_backend (EV_A))
1150 { 1727 {
1151 siginit (EV_A);
1152
1153#ifndef _WIN32 1728#ifndef _WIN32
1154 ev_signal_init (&childev, childcb, SIGCHLD); 1729 ev_signal_init (&childev, childcb, SIGCHLD);
1155 ev_set_priority (&childev, EV_MAXPRI); 1730 ev_set_priority (&childev, EV_MAXPRI);
1156 ev_signal_start (EV_A_ &childev); 1731 ev_signal_start (EV_A_ &childev);
1157 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1732 ev_unref (EV_A); /* child watcher should not keep loop alive */
… …
1169{ 1744{
1170#if EV_MULTIPLICITY 1745#if EV_MULTIPLICITY
1171 struct ev_loop *loop = ev_default_loop_ptr; 1746 struct ev_loop *loop = ev_default_loop_ptr;
1172#endif 1747#endif
1173 1748
1749 ev_default_loop_ptr = 0;
1750
1174#ifndef _WIN32 1751#ifndef _WIN32
1175 ev_ref (EV_A); /* child watcher */ 1752 ev_ref (EV_A); /* child watcher */
1176 ev_signal_stop (EV_A_ &childev); 1753 ev_signal_stop (EV_A_ &childev);
1177#endif 1754#endif
1178 1755
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); 1756 loop_destroy (EV_A);
1186} 1757}
1187 1758
1188void 1759void
1189ev_default_fork (void) 1760ev_default_fork (void)
1190{ 1761{
1191#if EV_MULTIPLICITY 1762#if EV_MULTIPLICITY
1192 struct ev_loop *loop = ev_default_loop_ptr; 1763 struct ev_loop *loop = ev_default_loop_ptr;
1193#endif 1764#endif
1194 1765
1195 if (backend) 1766 postfork = 1; /* must be in line with ev_loop_fork */
1196 postfork = 1;
1197} 1767}
1198 1768
1199/*****************************************************************************/ 1769/*****************************************************************************/
1200 1770
1201void 1771void
1202ev_invoke (EV_P_ void *w, int revents) 1772ev_invoke (EV_P_ void *w, int revents)
1203{ 1773{
1204 EV_CB_INVOKE ((W)w, revents); 1774 EV_CB_INVOKE ((W)w, revents);
1205} 1775}
1206 1776
1207void inline_speed 1777inline_speed void
1208call_pending (EV_P) 1778call_pending (EV_P)
1209{ 1779{
1210 int pri; 1780 int pri;
1211 1781
1212 for (pri = NUMPRI; pri--; ) 1782 for (pri = NUMPRI; pri--; )
1213 while (pendingcnt [pri]) 1783 while (pendingcnt [pri])
1214 { 1784 {
1215 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1785 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1216 1786
1217 if (expect_true (p->w))
1218 {
1219 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 1787 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1788 /* ^ this is no longer true, as pending_w could be here */
1220 1789
1221 p->w->pending = 0; 1790 p->w->pending = 0;
1222 EV_CB_INVOKE (p->w, p->events); 1791 EV_CB_INVOKE (p->w, p->events);
1223 } 1792 EV_FREQUENT_CHECK;
1224 } 1793 }
1225} 1794}
1226 1795
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 1796#if EV_IDLE_ENABLE
1308void inline_size 1797/* make idle watchers pending. this handles the "call-idle */
1798/* only when higher priorities are idle" logic */
1799inline_size void
1309idle_reify (EV_P) 1800idle_reify (EV_P)
1310{ 1801{
1311 if (expect_false (idleall)) 1802 if (expect_false (idleall))
1312 { 1803 {
1313 int pri; 1804 int pri;
… …
1325 } 1816 }
1326 } 1817 }
1327} 1818}
1328#endif 1819#endif
1329 1820
1330void inline_speed 1821/* make timers pending */
1822inline_size void
1823timers_reify (EV_P)
1824{
1825 EV_FREQUENT_CHECK;
1826
1827 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1828 {
1829 do
1830 {
1831 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
1832
1833 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
1834
1835 /* first reschedule or stop timer */
1836 if (w->repeat)
1837 {
1838 ev_at (w) += w->repeat;
1839 if (ev_at (w) < mn_now)
1840 ev_at (w) = mn_now;
1841
1842 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1843
1844 ANHE_at_cache (timers [HEAP0]);
1845 downheap (timers, timercnt, HEAP0);
1846 }
1847 else
1848 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1849
1850 EV_FREQUENT_CHECK;
1851 feed_reverse (EV_A_ (W)w);
1852 }
1853 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1854
1855 feed_reverse_done (EV_A_ EV_TIMEOUT);
1856 }
1857}
1858
1859#if EV_PERIODIC_ENABLE
1860/* make periodics pending */
1861inline_size void
1862periodics_reify (EV_P)
1863{
1864 EV_FREQUENT_CHECK;
1865
1866 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1867 {
1868 int feed_count = 0;
1869
1870 do
1871 {
1872 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1873
1874 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
1875
1876 /* first reschedule or stop timer */
1877 if (w->reschedule_cb)
1878 {
1879 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1880
1881 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1882
1883 ANHE_at_cache (periodics [HEAP0]);
1884 downheap (periodics, periodiccnt, HEAP0);
1885 }
1886 else if (w->interval)
1887 {
1888 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1889 /* if next trigger time is not sufficiently in the future, put it there */
1890 /* this might happen because of floating point inexactness */
1891 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1892 {
1893 ev_at (w) += w->interval;
1894
1895 /* if interval is unreasonably low we might still have a time in the past */
1896 /* so correct this. this will make the periodic very inexact, but the user */
1897 /* has effectively asked to get triggered more often than possible */
1898 if (ev_at (w) < ev_rt_now)
1899 ev_at (w) = ev_rt_now;
1900 }
1901
1902 ANHE_at_cache (periodics [HEAP0]);
1903 downheap (periodics, periodiccnt, HEAP0);
1904 }
1905 else
1906 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1907
1908 EV_FREQUENT_CHECK;
1909 feed_reverse (EV_A_ (W)w);
1910 }
1911 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1912
1913 feed_reverse_done (EV_A_ EV_PERIODIC);
1914 }
1915}
1916
1917/* simply recalculate all periodics */
1918/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1919static void noinline
1920periodics_reschedule (EV_P)
1921{
1922 int i;
1923
1924 /* adjust periodics after time jump */
1925 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1926 {
1927 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1928
1929 if (w->reschedule_cb)
1930 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1931 else if (w->interval)
1932 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1933
1934 ANHE_at_cache (periodics [i]);
1935 }
1936
1937 reheap (periodics, periodiccnt);
1938}
1939#endif
1940
1941/* adjust all timers by a given offset */
1942static void noinline
1943timers_reschedule (EV_P_ ev_tstamp adjust)
1944{
1945 int i;
1946
1947 for (i = 0; i < timercnt; ++i)
1948 {
1949 ANHE *he = timers + i + HEAP0;
1950 ANHE_w (*he)->at += adjust;
1951 ANHE_at_cache (*he);
1952 }
1953}
1954
1955/* fetch new monotonic and realtime times from the kernel */
1956/* also detetc if there was a timejump, and act accordingly */
1957inline_speed void
1331time_update (EV_P_ ev_tstamp max_block) 1958time_update (EV_P_ ev_tstamp max_block)
1332{ 1959{
1333 int i;
1334
1335#if EV_USE_MONOTONIC 1960#if EV_USE_MONOTONIC
1336 if (expect_true (have_monotonic)) 1961 if (expect_true (have_monotonic))
1337 { 1962 {
1963 int i;
1338 ev_tstamp odiff = rtmn_diff; 1964 ev_tstamp odiff = rtmn_diff;
1339 1965
1340 mn_now = get_clock (); 1966 mn_now = get_clock ();
1341 1967
1342 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 1968 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1360 */ 1986 */
1361 for (i = 4; --i; ) 1987 for (i = 4; --i; )
1362 { 1988 {
1363 rtmn_diff = ev_rt_now - mn_now; 1989 rtmn_diff = ev_rt_now - mn_now;
1364 1990
1365 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1991 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1366 return; /* all is well */ 1992 return; /* all is well */
1367 1993
1368 ev_rt_now = ev_time (); 1994 ev_rt_now = ev_time ();
1369 mn_now = get_clock (); 1995 mn_now = get_clock ();
1370 now_floor = mn_now; 1996 now_floor = mn_now;
1371 } 1997 }
1372 1998
1999 /* no timer adjustment, as the monotonic clock doesn't jump */
2000 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1373# if EV_PERIODIC_ENABLE 2001# if EV_PERIODIC_ENABLE
1374 periodics_reschedule (EV_A); 2002 periodics_reschedule (EV_A);
1375# endif 2003# endif
1376 /* no timer adjustment, as the monotonic clock doesn't jump */
1377 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1378 } 2004 }
1379 else 2005 else
1380#endif 2006#endif
1381 { 2007 {
1382 ev_rt_now = ev_time (); 2008 ev_rt_now = ev_time ();
1383 2009
1384 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2010 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1385 { 2011 {
2012 /* adjust timers. this is easy, as the offset is the same for all of them */
2013 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1386#if EV_PERIODIC_ENABLE 2014#if EV_PERIODIC_ENABLE
1387 periodics_reschedule (EV_A); 2015 periodics_reschedule (EV_A);
1388#endif 2016#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 } 2017 }
1393 2018
1394 mn_now = ev_rt_now; 2019 mn_now = ev_rt_now;
1395 } 2020 }
1396} 2021}
1397 2022
1398void
1399ev_ref (EV_P)
1400{
1401 ++activecnt;
1402}
1403
1404void
1405ev_unref (EV_P)
1406{
1407 --activecnt;
1408}
1409
1410static int loop_done; 2023static int loop_done;
1411 2024
1412void 2025void
1413ev_loop (EV_P_ int flags) 2026ev_loop (EV_P_ int flags)
1414{ 2027{
1415 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 2028 loop_done = EVUNLOOP_CANCEL;
1416 ? EVUNLOOP_ONE
1417 : EVUNLOOP_CANCEL;
1418 2029
1419 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2030 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1420 2031
1421 do 2032 do
1422 { 2033 {
2034#if EV_VERIFY >= 2
2035 ev_loop_verify (EV_A);
2036#endif
2037
1423#ifndef _WIN32 2038#ifndef _WIN32
1424 if (expect_false (curpid)) /* penalise the forking check even more */ 2039 if (expect_false (curpid)) /* penalise the forking check even more */
1425 if (expect_false (getpid () != curpid)) 2040 if (expect_false (getpid () != curpid))
1426 { 2041 {
1427 curpid = getpid (); 2042 curpid = getpid ();
… …
1444 { 2059 {
1445 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2060 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1446 call_pending (EV_A); 2061 call_pending (EV_A);
1447 } 2062 }
1448 2063
1449 if (expect_false (!activecnt))
1450 break;
1451
1452 /* we might have forked, so reify kernel state if necessary */ 2064 /* we might have forked, so reify kernel state if necessary */
1453 if (expect_false (postfork)) 2065 if (expect_false (postfork))
1454 loop_fork (EV_A); 2066 loop_fork (EV_A);
1455 2067
1456 /* update fd-related kernel structures */ 2068 /* update fd-related kernel structures */
1457 fd_reify (EV_A); 2069 fd_reify (EV_A);
1458 2070
1459 /* calculate blocking time */ 2071 /* calculate blocking time */
1460 { 2072 {
1461 ev_tstamp block; 2073 ev_tstamp waittime = 0.;
2074 ev_tstamp sleeptime = 0.;
1462 2075
1463 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt)) 2076 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1464 block = 0.; /* do not block at all */
1465 else
1466 { 2077 {
1467 /* update time to cancel out callback processing overhead */ 2078 /* update time to cancel out callback processing overhead */
1468 time_update (EV_A_ 1e100); 2079 time_update (EV_A_ 1e100);
1469 2080
1470 block = MAX_BLOCKTIME; 2081 waittime = MAX_BLOCKTIME;
1471 2082
1472 if (timercnt) 2083 if (timercnt)
1473 { 2084 {
1474 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 2085 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1475 if (block > to) block = to; 2086 if (waittime > to) waittime = to;
1476 } 2087 }
1477 2088
1478#if EV_PERIODIC_ENABLE 2089#if EV_PERIODIC_ENABLE
1479 if (periodiccnt) 2090 if (periodiccnt)
1480 { 2091 {
1481 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 2092 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1482 if (block > to) block = to; 2093 if (waittime > to) waittime = to;
1483 } 2094 }
1484#endif 2095#endif
1485 2096
1486 if (expect_false (block < 0.)) block = 0.; 2097 if (expect_false (waittime < timeout_blocktime))
2098 waittime = timeout_blocktime;
2099
2100 sleeptime = waittime - backend_fudge;
2101
2102 if (expect_true (sleeptime > io_blocktime))
2103 sleeptime = io_blocktime;
2104
2105 if (sleeptime)
2106 {
2107 ev_sleep (sleeptime);
2108 waittime -= sleeptime;
2109 }
1487 } 2110 }
1488 2111
1489 ++loop_count; 2112 ++loop_count;
1490 backend_poll (EV_A_ block); 2113 backend_poll (EV_A_ waittime);
1491 2114
1492 /* update ev_rt_now, do magic */ 2115 /* update ev_rt_now, do magic */
1493 time_update (EV_A_ block); 2116 time_update (EV_A_ waittime + sleeptime);
1494 } 2117 }
1495 2118
1496 /* queue pending timers and reschedule them */ 2119 /* queue pending timers and reschedule them */
1497 timers_reify (EV_A); /* relative timers called last */ 2120 timers_reify (EV_A); /* relative timers called last */
1498#if EV_PERIODIC_ENABLE 2121#if EV_PERIODIC_ENABLE
… …
1507 /* queue check watchers, to be executed first */ 2130 /* queue check watchers, to be executed first */
1508 if (expect_false (checkcnt)) 2131 if (expect_false (checkcnt))
1509 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2132 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1510 2133
1511 call_pending (EV_A); 2134 call_pending (EV_A);
1512
1513 } 2135 }
1514 while (expect_true (activecnt && !loop_done)); 2136 while (expect_true (
2137 activecnt
2138 && !loop_done
2139 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2140 ));
1515 2141
1516 if (loop_done == EVUNLOOP_ONE) 2142 if (loop_done == EVUNLOOP_ONE)
1517 loop_done = EVUNLOOP_CANCEL; 2143 loop_done = EVUNLOOP_CANCEL;
1518} 2144}
1519 2145
… …
1521ev_unloop (EV_P_ int how) 2147ev_unloop (EV_P_ int how)
1522{ 2148{
1523 loop_done = how; 2149 loop_done = how;
1524} 2150}
1525 2151
2152void
2153ev_ref (EV_P)
2154{
2155 ++activecnt;
2156}
2157
2158void
2159ev_unref (EV_P)
2160{
2161 --activecnt;
2162}
2163
2164void
2165ev_now_update (EV_P)
2166{
2167 time_update (EV_A_ 1e100);
2168}
2169
2170void
2171ev_suspend (EV_P)
2172{
2173 ev_now_update (EV_A);
2174}
2175
2176void
2177ev_resume (EV_P)
2178{
2179 ev_tstamp mn_prev = mn_now;
2180
2181 ev_now_update (EV_A);
2182 timers_reschedule (EV_A_ mn_now - mn_prev);
2183#if EV_PERIODIC_ENABLE
2184 /* TODO: really do this? */
2185 periodics_reschedule (EV_A);
2186#endif
2187}
2188
1526/*****************************************************************************/ 2189/*****************************************************************************/
2190/* singly-linked list management, used when the expected list length is short */
1527 2191
1528void inline_size 2192inline_size void
1529wlist_add (WL *head, WL elem) 2193wlist_add (WL *head, WL elem)
1530{ 2194{
1531 elem->next = *head; 2195 elem->next = *head;
1532 *head = elem; 2196 *head = elem;
1533} 2197}
1534 2198
1535void inline_size 2199inline_size void
1536wlist_del (WL *head, WL elem) 2200wlist_del (WL *head, WL elem)
1537{ 2201{
1538 while (*head) 2202 while (*head)
1539 { 2203 {
1540 if (*head == elem) 2204 if (*head == elem)
… …
1545 2209
1546 head = &(*head)->next; 2210 head = &(*head)->next;
1547 } 2211 }
1548} 2212}
1549 2213
1550void inline_speed 2214/* internal, faster, version of ev_clear_pending */
2215inline_speed void
1551clear_pending (EV_P_ W w) 2216clear_pending (EV_P_ W w)
1552{ 2217{
1553 if (w->pending) 2218 if (w->pending)
1554 { 2219 {
1555 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2220 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1556 w->pending = 0; 2221 w->pending = 0;
1557 } 2222 }
1558} 2223}
1559 2224
1560int 2225int
… …
1564 int pending = w_->pending; 2229 int pending = w_->pending;
1565 2230
1566 if (expect_true (pending)) 2231 if (expect_true (pending))
1567 { 2232 {
1568 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2233 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2234 p->w = (W)&pending_w;
1569 w_->pending = 0; 2235 w_->pending = 0;
1570 p->w = 0;
1571 return p->events; 2236 return p->events;
1572 } 2237 }
1573 else 2238 else
1574 return 0; 2239 return 0;
1575} 2240}
1576 2241
1577void inline_size 2242inline_size void
1578pri_adjust (EV_P_ W w) 2243pri_adjust (EV_P_ W w)
1579{ 2244{
1580 int pri = w->priority; 2245 int pri = w->priority;
1581 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2246 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1582 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2247 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1583 w->priority = pri; 2248 w->priority = pri;
1584} 2249}
1585 2250
1586void inline_speed 2251inline_speed void
1587ev_start (EV_P_ W w, int active) 2252ev_start (EV_P_ W w, int active)
1588{ 2253{
1589 pri_adjust (EV_A_ w); 2254 pri_adjust (EV_A_ w);
1590 w->active = active; 2255 w->active = active;
1591 ev_ref (EV_A); 2256 ev_ref (EV_A);
1592} 2257}
1593 2258
1594void inline_size 2259inline_size void
1595ev_stop (EV_P_ W w) 2260ev_stop (EV_P_ W w)
1596{ 2261{
1597 ev_unref (EV_A); 2262 ev_unref (EV_A);
1598 w->active = 0; 2263 w->active = 0;
1599} 2264}
… …
1606 int fd = w->fd; 2271 int fd = w->fd;
1607 2272
1608 if (expect_false (ev_is_active (w))) 2273 if (expect_false (ev_is_active (w)))
1609 return; 2274 return;
1610 2275
1611 assert (("ev_io_start called with negative fd", fd >= 0)); 2276 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2277 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2278
2279 EV_FREQUENT_CHECK;
1612 2280
1613 ev_start (EV_A_ (W)w, 1); 2281 ev_start (EV_A_ (W)w, 1);
1614 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2282 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1615 wlist_add (&anfds[fd].head, (WL)w); 2283 wlist_add (&anfds[fd].head, (WL)w);
1616 2284
1617 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2285 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
1618 w->events &= ~EV_IOFDSET; 2286 w->events &= ~EV__IOFDSET;
2287
2288 EV_FREQUENT_CHECK;
1619} 2289}
1620 2290
1621void noinline 2291void noinline
1622ev_io_stop (EV_P_ ev_io *w) 2292ev_io_stop (EV_P_ ev_io *w)
1623{ 2293{
1624 clear_pending (EV_A_ (W)w); 2294 clear_pending (EV_A_ (W)w);
1625 if (expect_false (!ev_is_active (w))) 2295 if (expect_false (!ev_is_active (w)))
1626 return; 2296 return;
1627 2297
1628 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2298 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2299
2300 EV_FREQUENT_CHECK;
1629 2301
1630 wlist_del (&anfds[w->fd].head, (WL)w); 2302 wlist_del (&anfds[w->fd].head, (WL)w);
1631 ev_stop (EV_A_ (W)w); 2303 ev_stop (EV_A_ (W)w);
1632 2304
1633 fd_change (EV_A_ w->fd, 1); 2305 fd_change (EV_A_ w->fd, 1);
2306
2307 EV_FREQUENT_CHECK;
1634} 2308}
1635 2309
1636void noinline 2310void noinline
1637ev_timer_start (EV_P_ ev_timer *w) 2311ev_timer_start (EV_P_ ev_timer *w)
1638{ 2312{
1639 if (expect_false (ev_is_active (w))) 2313 if (expect_false (ev_is_active (w)))
1640 return; 2314 return;
1641 2315
1642 ((WT)w)->at += mn_now; 2316 ev_at (w) += mn_now;
1643 2317
1644 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2318 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1645 2319
2320 EV_FREQUENT_CHECK;
2321
2322 ++timercnt;
1646 ev_start (EV_A_ (W)w, ++timercnt); 2323 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1647 array_needsize (WT, timers, timermax, timercnt, EMPTY2); 2324 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1648 timers [timercnt - 1] = (WT)w; 2325 ANHE_w (timers [ev_active (w)]) = (WT)w;
1649 upheap (timers, timercnt - 1); 2326 ANHE_at_cache (timers [ev_active (w)]);
2327 upheap (timers, ev_active (w));
1650 2328
2329 EV_FREQUENT_CHECK;
2330
1651 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ 2331 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1652} 2332}
1653 2333
1654void noinline 2334void noinline
1655ev_timer_stop (EV_P_ ev_timer *w) 2335ev_timer_stop (EV_P_ ev_timer *w)
1656{ 2336{
1657 clear_pending (EV_A_ (W)w); 2337 clear_pending (EV_A_ (W)w);
1658 if (expect_false (!ev_is_active (w))) 2338 if (expect_false (!ev_is_active (w)))
1659 return; 2339 return;
1660 2340
1661 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w)); 2341 EV_FREQUENT_CHECK;
1662 2342
1663 { 2343 {
1664 int active = ((W)w)->active; 2344 int active = ev_active (w);
1665 2345
2346 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2347
2348 --timercnt;
2349
1666 if (expect_true (--active < --timercnt)) 2350 if (expect_true (active < timercnt + HEAP0))
1667 { 2351 {
1668 timers [active] = timers [timercnt]; 2352 timers [active] = timers [timercnt + HEAP0];
1669 adjustheap (timers, timercnt, active); 2353 adjustheap (timers, timercnt, active);
1670 } 2354 }
1671 } 2355 }
1672 2356
1673 ((WT)w)->at -= mn_now; 2357 EV_FREQUENT_CHECK;
2358
2359 ev_at (w) -= mn_now;
1674 2360
1675 ev_stop (EV_A_ (W)w); 2361 ev_stop (EV_A_ (W)w);
1676} 2362}
1677 2363
1678void noinline 2364void noinline
1679ev_timer_again (EV_P_ ev_timer *w) 2365ev_timer_again (EV_P_ ev_timer *w)
1680{ 2366{
2367 EV_FREQUENT_CHECK;
2368
1681 if (ev_is_active (w)) 2369 if (ev_is_active (w))
1682 { 2370 {
1683 if (w->repeat) 2371 if (w->repeat)
1684 { 2372 {
1685 ((WT)w)->at = mn_now + w->repeat; 2373 ev_at (w) = mn_now + w->repeat;
2374 ANHE_at_cache (timers [ev_active (w)]);
1686 adjustheap (timers, timercnt, ((W)w)->active - 1); 2375 adjustheap (timers, timercnt, ev_active (w));
1687 } 2376 }
1688 else 2377 else
1689 ev_timer_stop (EV_A_ w); 2378 ev_timer_stop (EV_A_ w);
1690 } 2379 }
1691 else if (w->repeat) 2380 else if (w->repeat)
1692 { 2381 {
1693 w->at = w->repeat; 2382 ev_at (w) = w->repeat;
1694 ev_timer_start (EV_A_ w); 2383 ev_timer_start (EV_A_ w);
1695 } 2384 }
2385
2386 EV_FREQUENT_CHECK;
1696} 2387}
1697 2388
1698#if EV_PERIODIC_ENABLE 2389#if EV_PERIODIC_ENABLE
1699void noinline 2390void noinline
1700ev_periodic_start (EV_P_ ev_periodic *w) 2391ev_periodic_start (EV_P_ ev_periodic *w)
1701{ 2392{
1702 if (expect_false (ev_is_active (w))) 2393 if (expect_false (ev_is_active (w)))
1703 return; 2394 return;
1704 2395
1705 if (w->reschedule_cb) 2396 if (w->reschedule_cb)
1706 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2397 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1707 else if (w->interval) 2398 else if (w->interval)
1708 { 2399 {
1709 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2400 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1710 /* this formula differs from the one in periodic_reify because we do not always round up */ 2401 /* this formula differs from the one in periodic_reify because we do not always round up */
1711 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2402 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1712 } 2403 }
1713 else 2404 else
1714 ((WT)w)->at = w->offset; 2405 ev_at (w) = w->offset;
1715 2406
2407 EV_FREQUENT_CHECK;
2408
2409 ++periodiccnt;
1716 ev_start (EV_A_ (W)w, ++periodiccnt); 2410 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1717 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2); 2411 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1718 periodics [periodiccnt - 1] = (WT)w; 2412 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1719 upheap (periodics, periodiccnt - 1); 2413 ANHE_at_cache (periodics [ev_active (w)]);
2414 upheap (periodics, ev_active (w));
1720 2415
2416 EV_FREQUENT_CHECK;
2417
1721 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ 2418 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1722} 2419}
1723 2420
1724void noinline 2421void noinline
1725ev_periodic_stop (EV_P_ ev_periodic *w) 2422ev_periodic_stop (EV_P_ ev_periodic *w)
1726{ 2423{
1727 clear_pending (EV_A_ (W)w); 2424 clear_pending (EV_A_ (W)w);
1728 if (expect_false (!ev_is_active (w))) 2425 if (expect_false (!ev_is_active (w)))
1729 return; 2426 return;
1730 2427
1731 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w)); 2428 EV_FREQUENT_CHECK;
1732 2429
1733 { 2430 {
1734 int active = ((W)w)->active; 2431 int active = ev_active (w);
1735 2432
2433 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2434
2435 --periodiccnt;
2436
1736 if (expect_true (--active < --periodiccnt)) 2437 if (expect_true (active < periodiccnt + HEAP0))
1737 { 2438 {
1738 periodics [active] = periodics [periodiccnt]; 2439 periodics [active] = periodics [periodiccnt + HEAP0];
1739 adjustheap (periodics, periodiccnt, active); 2440 adjustheap (periodics, periodiccnt, active);
1740 } 2441 }
1741 } 2442 }
1742 2443
2444 EV_FREQUENT_CHECK;
2445
1743 ev_stop (EV_A_ (W)w); 2446 ev_stop (EV_A_ (W)w);
1744} 2447}
1745 2448
1746void noinline 2449void noinline
1747ev_periodic_again (EV_P_ ev_periodic *w) 2450ev_periodic_again (EV_P_ ev_periodic *w)
… …
1758 2461
1759void noinline 2462void noinline
1760ev_signal_start (EV_P_ ev_signal *w) 2463ev_signal_start (EV_P_ ev_signal *w)
1761{ 2464{
1762#if EV_MULTIPLICITY 2465#if EV_MULTIPLICITY
1763 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2466 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1764#endif 2467#endif
1765 if (expect_false (ev_is_active (w))) 2468 if (expect_false (ev_is_active (w)))
1766 return; 2469 return;
1767 2470
1768 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2471 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2472
2473 evpipe_init (EV_A);
2474
2475 EV_FREQUENT_CHECK;
1769 2476
1770 { 2477 {
1771#ifndef _WIN32 2478#ifndef _WIN32
1772 sigset_t full, prev; 2479 sigset_t full, prev;
1773 sigfillset (&full); 2480 sigfillset (&full);
1774 sigprocmask (SIG_SETMASK, &full, &prev); 2481 sigprocmask (SIG_SETMASK, &full, &prev);
1775#endif 2482#endif
1776 2483
1777 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2484 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
1778 2485
1779#ifndef _WIN32 2486#ifndef _WIN32
1780 sigprocmask (SIG_SETMASK, &prev, 0); 2487 sigprocmask (SIG_SETMASK, &prev, 0);
1781#endif 2488#endif
1782 } 2489 }
… …
1785 wlist_add (&signals [w->signum - 1].head, (WL)w); 2492 wlist_add (&signals [w->signum - 1].head, (WL)w);
1786 2493
1787 if (!((WL)w)->next) 2494 if (!((WL)w)->next)
1788 { 2495 {
1789#if _WIN32 2496#if _WIN32
1790 signal (w->signum, sighandler); 2497 signal (w->signum, ev_sighandler);
1791#else 2498#else
1792 struct sigaction sa; 2499 struct sigaction sa;
1793 sa.sa_handler = sighandler; 2500 sa.sa_handler = ev_sighandler;
1794 sigfillset (&sa.sa_mask); 2501 sigfillset (&sa.sa_mask);
1795 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2502 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1796 sigaction (w->signum, &sa, 0); 2503 sigaction (w->signum, &sa, 0);
1797#endif 2504#endif
1798 } 2505 }
2506
2507 EV_FREQUENT_CHECK;
1799} 2508}
1800 2509
1801void noinline 2510void noinline
1802ev_signal_stop (EV_P_ ev_signal *w) 2511ev_signal_stop (EV_P_ ev_signal *w)
1803{ 2512{
1804 clear_pending (EV_A_ (W)w); 2513 clear_pending (EV_A_ (W)w);
1805 if (expect_false (!ev_is_active (w))) 2514 if (expect_false (!ev_is_active (w)))
1806 return; 2515 return;
1807 2516
2517 EV_FREQUENT_CHECK;
2518
1808 wlist_del (&signals [w->signum - 1].head, (WL)w); 2519 wlist_del (&signals [w->signum - 1].head, (WL)w);
1809 ev_stop (EV_A_ (W)w); 2520 ev_stop (EV_A_ (W)w);
1810 2521
1811 if (!signals [w->signum - 1].head) 2522 if (!signals [w->signum - 1].head)
1812 signal (w->signum, SIG_DFL); 2523 signal (w->signum, SIG_DFL);
2524
2525 EV_FREQUENT_CHECK;
1813} 2526}
1814 2527
1815void 2528void
1816ev_child_start (EV_P_ ev_child *w) 2529ev_child_start (EV_P_ ev_child *w)
1817{ 2530{
1818#if EV_MULTIPLICITY 2531#if EV_MULTIPLICITY
1819 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2532 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1820#endif 2533#endif
1821 if (expect_false (ev_is_active (w))) 2534 if (expect_false (ev_is_active (w)))
1822 return; 2535 return;
1823 2536
2537 EV_FREQUENT_CHECK;
2538
1824 ev_start (EV_A_ (W)w, 1); 2539 ev_start (EV_A_ (W)w, 1);
1825 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2540 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2541
2542 EV_FREQUENT_CHECK;
1826} 2543}
1827 2544
1828void 2545void
1829ev_child_stop (EV_P_ ev_child *w) 2546ev_child_stop (EV_P_ ev_child *w)
1830{ 2547{
1831 clear_pending (EV_A_ (W)w); 2548 clear_pending (EV_A_ (W)w);
1832 if (expect_false (!ev_is_active (w))) 2549 if (expect_false (!ev_is_active (w)))
1833 return; 2550 return;
1834 2551
2552 EV_FREQUENT_CHECK;
2553
1835 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2554 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1836 ev_stop (EV_A_ (W)w); 2555 ev_stop (EV_A_ (W)w);
2556
2557 EV_FREQUENT_CHECK;
1837} 2558}
1838 2559
1839#if EV_STAT_ENABLE 2560#if EV_STAT_ENABLE
1840 2561
1841# ifdef _WIN32 2562# ifdef _WIN32
1842# undef lstat 2563# undef lstat
1843# define lstat(a,b) _stati64 (a,b) 2564# define lstat(a,b) _stati64 (a,b)
1844# endif 2565# endif
1845 2566
1846#define DEF_STAT_INTERVAL 5.0074891 2567#define DEF_STAT_INTERVAL 5.0074891
2568#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
1847#define MIN_STAT_INTERVAL 0.1074891 2569#define MIN_STAT_INTERVAL 0.1074891
1848 2570
1849static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2571static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1850 2572
1851#if EV_USE_INOTIFY 2573#if EV_USE_INOTIFY
1852# define EV_INOTIFY_BUFSIZE 8192 2574# define EV_INOTIFY_BUFSIZE 8192
… …
1856{ 2578{
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); 2579 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
1858 2580
1859 if (w->wd < 0) 2581 if (w->wd < 0)
1860 { 2582 {
2583 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 */ 2584 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1862 2585
1863 /* monitor some parent directory for speedup hints */ 2586 /* monitor some parent directory for speedup hints */
2587 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2588 /* but an efficiency issue only */
1864 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2589 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1865 { 2590 {
1866 char path [4096]; 2591 char path [4096];
1867 strcpy (path, w->path); 2592 strcpy (path, w->path);
1868 2593
… …
1871 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2596 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1872 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2597 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1873 2598
1874 char *pend = strrchr (path, '/'); 2599 char *pend = strrchr (path, '/');
1875 2600
1876 if (!pend) 2601 if (!pend || pend == path)
1877 break; /* whoops, no '/', complain to your admin */ 2602 break;
1878 2603
1879 *pend = 0; 2604 *pend = 0;
1880 w->wd = inotify_add_watch (fs_fd, path, mask); 2605 w->wd = inotify_add_watch (fs_fd, path, mask);
1881 } 2606 }
1882 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2607 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1883 } 2608 }
1884 } 2609 }
1885 else
1886 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1887 2610
1888 if (w->wd >= 0) 2611 if (w->wd >= 0)
2612 {
1889 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2613 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2614
2615 /* now local changes will be tracked by inotify, but remote changes won't */
2616 /* unless the filesystem it known to be local, we therefore still poll */
2617 /* also do poll on <2.6.25, but with normal frequency */
2618 struct statfs sfs;
2619
2620 if (fs_2625 && !statfs (w->path, &sfs))
2621 if (sfs.f_type == 0x1373 /* devfs */
2622 || sfs.f_type == 0xEF53 /* ext2/3 */
2623 || sfs.f_type == 0x3153464a /* jfs */
2624 || sfs.f_type == 0x52654973 /* reiser3 */
2625 || sfs.f_type == 0x01021994 /* tempfs */
2626 || sfs.f_type == 0x58465342 /* xfs */)
2627 return;
2628
2629 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2630 ev_timer_again (EV_A_ &w->timer);
2631 }
1890} 2632}
1891 2633
1892static void noinline 2634static void noinline
1893infy_del (EV_P_ ev_stat *w) 2635infy_del (EV_P_ ev_stat *w)
1894{ 2636{
… …
1908 2650
1909static void noinline 2651static void noinline
1910infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2652infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1911{ 2653{
1912 if (slot < 0) 2654 if (slot < 0)
1913 /* overflow, need to check for all hahs slots */ 2655 /* overflow, need to check for all hash slots */
1914 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2656 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1915 infy_wd (EV_A_ slot, wd, ev); 2657 infy_wd (EV_A_ slot, wd, ev);
1916 else 2658 else
1917 { 2659 {
1918 WL w_; 2660 WL w_;
… …
1924 2666
1925 if (w->wd == wd || wd == -1) 2667 if (w->wd == wd || wd == -1)
1926 { 2668 {
1927 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2669 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1928 { 2670 {
2671 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1929 w->wd = -1; 2672 w->wd = -1;
1930 infy_add (EV_A_ w); /* re-add, no matter what */ 2673 infy_add (EV_A_ w); /* re-add, no matter what */
1931 } 2674 }
1932 2675
1933 stat_timer_cb (EV_A_ &w->timer, 0); 2676 stat_timer_cb (EV_A_ &w->timer, 0);
… …
1946 2689
1947 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 2690 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1948 infy_wd (EV_A_ ev->wd, ev->wd, ev); 2691 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1949} 2692}
1950 2693
1951void inline_size 2694inline_size void
2695check_2625 (EV_P)
2696{
2697 /* kernels < 2.6.25 are borked
2698 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2699 */
2700 struct utsname buf;
2701 int major, minor, micro;
2702
2703 if (uname (&buf))
2704 return;
2705
2706 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2707 return;
2708
2709 if (major < 2
2710 || (major == 2 && minor < 6)
2711 || (major == 2 && minor == 6 && micro < 25))
2712 return;
2713
2714 fs_2625 = 1;
2715}
2716
2717inline_size void
1952infy_init (EV_P) 2718infy_init (EV_P)
1953{ 2719{
1954 if (fs_fd != -2) 2720 if (fs_fd != -2)
1955 return; 2721 return;
2722
2723 fs_fd = -1;
2724
2725 check_2625 (EV_A);
1956 2726
1957 fs_fd = inotify_init (); 2727 fs_fd = inotify_init ();
1958 2728
1959 if (fs_fd >= 0) 2729 if (fs_fd >= 0)
1960 { 2730 {
… …
1962 ev_set_priority (&fs_w, EV_MAXPRI); 2732 ev_set_priority (&fs_w, EV_MAXPRI);
1963 ev_io_start (EV_A_ &fs_w); 2733 ev_io_start (EV_A_ &fs_w);
1964 } 2734 }
1965} 2735}
1966 2736
1967void inline_size 2737inline_size void
1968infy_fork (EV_P) 2738infy_fork (EV_P)
1969{ 2739{
1970 int slot; 2740 int slot;
1971 2741
1972 if (fs_fd < 0) 2742 if (fs_fd < 0)
… …
1988 w->wd = -1; 2758 w->wd = -1;
1989 2759
1990 if (fs_fd >= 0) 2760 if (fs_fd >= 0)
1991 infy_add (EV_A_ w); /* re-add, no matter what */ 2761 infy_add (EV_A_ w); /* re-add, no matter what */
1992 else 2762 else
1993 ev_timer_start (EV_A_ &w->timer); 2763 ev_timer_again (EV_A_ &w->timer);
1994 } 2764 }
1995
1996 } 2765 }
1997} 2766}
1998 2767
2768#endif
2769
2770#ifdef _WIN32
2771# define EV_LSTAT(p,b) _stati64 (p, b)
2772#else
2773# define EV_LSTAT(p,b) lstat (p, b)
1999#endif 2774#endif
2000 2775
2001void 2776void
2002ev_stat_stat (EV_P_ ev_stat *w) 2777ev_stat_stat (EV_P_ ev_stat *w)
2003{ 2778{
… …
2030 || w->prev.st_atime != w->attr.st_atime 2805 || w->prev.st_atime != w->attr.st_atime
2031 || w->prev.st_mtime != w->attr.st_mtime 2806 || w->prev.st_mtime != w->attr.st_mtime
2032 || w->prev.st_ctime != w->attr.st_ctime 2807 || w->prev.st_ctime != w->attr.st_ctime
2033 ) { 2808 ) {
2034 #if EV_USE_INOTIFY 2809 #if EV_USE_INOTIFY
2810 if (fs_fd >= 0)
2811 {
2035 infy_del (EV_A_ w); 2812 infy_del (EV_A_ w);
2036 infy_add (EV_A_ w); 2813 infy_add (EV_A_ w);
2037 ev_stat_stat (EV_A_ w); /* avoid race... */ 2814 ev_stat_stat (EV_A_ w); /* avoid race... */
2815 }
2038 #endif 2816 #endif
2039 2817
2040 ev_feed_event (EV_A_ w, EV_STAT); 2818 ev_feed_event (EV_A_ w, EV_STAT);
2041 } 2819 }
2042} 2820}
… …
2045ev_stat_start (EV_P_ ev_stat *w) 2823ev_stat_start (EV_P_ ev_stat *w)
2046{ 2824{
2047 if (expect_false (ev_is_active (w))) 2825 if (expect_false (ev_is_active (w)))
2048 return; 2826 return;
2049 2827
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); 2828 ev_stat_stat (EV_A_ w);
2055 2829
2830 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2056 if (w->interval < MIN_STAT_INTERVAL) 2831 w->interval = MIN_STAT_INTERVAL;
2057 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2058 2832
2059 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 2833 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2060 ev_set_priority (&w->timer, ev_priority (w)); 2834 ev_set_priority (&w->timer, ev_priority (w));
2061 2835
2062#if EV_USE_INOTIFY 2836#if EV_USE_INOTIFY
2063 infy_init (EV_A); 2837 infy_init (EV_A);
2064 2838
2065 if (fs_fd >= 0) 2839 if (fs_fd >= 0)
2066 infy_add (EV_A_ w); 2840 infy_add (EV_A_ w);
2067 else 2841 else
2068#endif 2842#endif
2069 ev_timer_start (EV_A_ &w->timer); 2843 ev_timer_again (EV_A_ &w->timer);
2070 2844
2071 ev_start (EV_A_ (W)w, 1); 2845 ev_start (EV_A_ (W)w, 1);
2846
2847 EV_FREQUENT_CHECK;
2072} 2848}
2073 2849
2074void 2850void
2075ev_stat_stop (EV_P_ ev_stat *w) 2851ev_stat_stop (EV_P_ ev_stat *w)
2076{ 2852{
2077 clear_pending (EV_A_ (W)w); 2853 clear_pending (EV_A_ (W)w);
2078 if (expect_false (!ev_is_active (w))) 2854 if (expect_false (!ev_is_active (w)))
2079 return; 2855 return;
2080 2856
2857 EV_FREQUENT_CHECK;
2858
2081#if EV_USE_INOTIFY 2859#if EV_USE_INOTIFY
2082 infy_del (EV_A_ w); 2860 infy_del (EV_A_ w);
2083#endif 2861#endif
2084 ev_timer_stop (EV_A_ &w->timer); 2862 ev_timer_stop (EV_A_ &w->timer);
2085 2863
2086 ev_stop (EV_A_ (W)w); 2864 ev_stop (EV_A_ (W)w);
2865
2866 EV_FREQUENT_CHECK;
2087} 2867}
2088#endif 2868#endif
2089 2869
2090#if EV_IDLE_ENABLE 2870#if EV_IDLE_ENABLE
2091void 2871void
… …
2093{ 2873{
2094 if (expect_false (ev_is_active (w))) 2874 if (expect_false (ev_is_active (w)))
2095 return; 2875 return;
2096 2876
2097 pri_adjust (EV_A_ (W)w); 2877 pri_adjust (EV_A_ (W)w);
2878
2879 EV_FREQUENT_CHECK;
2098 2880
2099 { 2881 {
2100 int active = ++idlecnt [ABSPRI (w)]; 2882 int active = ++idlecnt [ABSPRI (w)];
2101 2883
2102 ++idleall; 2884 ++idleall;
2103 ev_start (EV_A_ (W)w, active); 2885 ev_start (EV_A_ (W)w, active);
2104 2886
2105 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 2887 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2106 idles [ABSPRI (w)][active - 1] = w; 2888 idles [ABSPRI (w)][active - 1] = w;
2107 } 2889 }
2890
2891 EV_FREQUENT_CHECK;
2108} 2892}
2109 2893
2110void 2894void
2111ev_idle_stop (EV_P_ ev_idle *w) 2895ev_idle_stop (EV_P_ ev_idle *w)
2112{ 2896{
2113 clear_pending (EV_A_ (W)w); 2897 clear_pending (EV_A_ (W)w);
2114 if (expect_false (!ev_is_active (w))) 2898 if (expect_false (!ev_is_active (w)))
2115 return; 2899 return;
2116 2900
2901 EV_FREQUENT_CHECK;
2902
2117 { 2903 {
2118 int active = ((W)w)->active; 2904 int active = ev_active (w);
2119 2905
2120 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 2906 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2121 ((W)idles [ABSPRI (w)][active - 1])->active = active; 2907 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2122 2908
2123 ev_stop (EV_A_ (W)w); 2909 ev_stop (EV_A_ (W)w);
2124 --idleall; 2910 --idleall;
2125 } 2911 }
2912
2913 EV_FREQUENT_CHECK;
2126} 2914}
2127#endif 2915#endif
2128 2916
2129void 2917void
2130ev_prepare_start (EV_P_ ev_prepare *w) 2918ev_prepare_start (EV_P_ ev_prepare *w)
2131{ 2919{
2132 if (expect_false (ev_is_active (w))) 2920 if (expect_false (ev_is_active (w)))
2133 return; 2921 return;
2922
2923 EV_FREQUENT_CHECK;
2134 2924
2135 ev_start (EV_A_ (W)w, ++preparecnt); 2925 ev_start (EV_A_ (W)w, ++preparecnt);
2136 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 2926 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2137 prepares [preparecnt - 1] = w; 2927 prepares [preparecnt - 1] = w;
2928
2929 EV_FREQUENT_CHECK;
2138} 2930}
2139 2931
2140void 2932void
2141ev_prepare_stop (EV_P_ ev_prepare *w) 2933ev_prepare_stop (EV_P_ ev_prepare *w)
2142{ 2934{
2143 clear_pending (EV_A_ (W)w); 2935 clear_pending (EV_A_ (W)w);
2144 if (expect_false (!ev_is_active (w))) 2936 if (expect_false (!ev_is_active (w)))
2145 return; 2937 return;
2146 2938
2939 EV_FREQUENT_CHECK;
2940
2147 { 2941 {
2148 int active = ((W)w)->active; 2942 int active = ev_active (w);
2943
2149 prepares [active - 1] = prepares [--preparecnt]; 2944 prepares [active - 1] = prepares [--preparecnt];
2150 ((W)prepares [active - 1])->active = active; 2945 ev_active (prepares [active - 1]) = active;
2151 } 2946 }
2152 2947
2153 ev_stop (EV_A_ (W)w); 2948 ev_stop (EV_A_ (W)w);
2949
2950 EV_FREQUENT_CHECK;
2154} 2951}
2155 2952
2156void 2953void
2157ev_check_start (EV_P_ ev_check *w) 2954ev_check_start (EV_P_ ev_check *w)
2158{ 2955{
2159 if (expect_false (ev_is_active (w))) 2956 if (expect_false (ev_is_active (w)))
2160 return; 2957 return;
2958
2959 EV_FREQUENT_CHECK;
2161 2960
2162 ev_start (EV_A_ (W)w, ++checkcnt); 2961 ev_start (EV_A_ (W)w, ++checkcnt);
2163 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 2962 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2164 checks [checkcnt - 1] = w; 2963 checks [checkcnt - 1] = w;
2964
2965 EV_FREQUENT_CHECK;
2165} 2966}
2166 2967
2167void 2968void
2168ev_check_stop (EV_P_ ev_check *w) 2969ev_check_stop (EV_P_ ev_check *w)
2169{ 2970{
2170 clear_pending (EV_A_ (W)w); 2971 clear_pending (EV_A_ (W)w);
2171 if (expect_false (!ev_is_active (w))) 2972 if (expect_false (!ev_is_active (w)))
2172 return; 2973 return;
2173 2974
2975 EV_FREQUENT_CHECK;
2976
2174 { 2977 {
2175 int active = ((W)w)->active; 2978 int active = ev_active (w);
2979
2176 checks [active - 1] = checks [--checkcnt]; 2980 checks [active - 1] = checks [--checkcnt];
2177 ((W)checks [active - 1])->active = active; 2981 ev_active (checks [active - 1]) = active;
2178 } 2982 }
2179 2983
2180 ev_stop (EV_A_ (W)w); 2984 ev_stop (EV_A_ (W)w);
2985
2986 EV_FREQUENT_CHECK;
2181} 2987}
2182 2988
2183#if EV_EMBED_ENABLE 2989#if EV_EMBED_ENABLE
2184void noinline 2990void noinline
2185ev_embed_sweep (EV_P_ ev_embed *w) 2991ev_embed_sweep (EV_P_ ev_embed *w)
… …
2193 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 2999 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2194 3000
2195 if (ev_cb (w)) 3001 if (ev_cb (w))
2196 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3002 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2197 else 3003 else
2198 ev_embed_sweep (loop, w); 3004 ev_loop (w->other, EVLOOP_NONBLOCK);
2199} 3005}
2200 3006
2201static void 3007static void
2202embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3008embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2203{ 3009{
2204 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3010 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2205 3011
2206 fd_reify (w->other); 3012 {
3013 struct ev_loop *loop = w->other;
3014
3015 while (fdchangecnt)
3016 {
3017 fd_reify (EV_A);
3018 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3019 }
3020 }
2207} 3021}
3022
3023static void
3024embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3025{
3026 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3027
3028 ev_embed_stop (EV_A_ w);
3029
3030 {
3031 struct ev_loop *loop = w->other;
3032
3033 ev_loop_fork (EV_A);
3034 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3035 }
3036
3037 ev_embed_start (EV_A_ w);
3038}
3039
3040#if 0
3041static void
3042embed_idle_cb (EV_P_ ev_idle *idle, int revents)
3043{
3044 ev_idle_stop (EV_A_ idle);
3045}
3046#endif
2208 3047
2209void 3048void
2210ev_embed_start (EV_P_ ev_embed *w) 3049ev_embed_start (EV_P_ ev_embed *w)
2211{ 3050{
2212 if (expect_false (ev_is_active (w))) 3051 if (expect_false (ev_is_active (w)))
2213 return; 3052 return;
2214 3053
2215 { 3054 {
2216 struct ev_loop *loop = w->other; 3055 struct ev_loop *loop = w->other;
2217 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3056 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2218 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3057 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2219 } 3058 }
3059
3060 EV_FREQUENT_CHECK;
2220 3061
2221 ev_set_priority (&w->io, ev_priority (w)); 3062 ev_set_priority (&w->io, ev_priority (w));
2222 ev_io_start (EV_A_ &w->io); 3063 ev_io_start (EV_A_ &w->io);
2223 3064
2224 ev_prepare_init (&w->prepare, embed_prepare_cb); 3065 ev_prepare_init (&w->prepare, embed_prepare_cb);
2225 ev_set_priority (&w->prepare, EV_MINPRI); 3066 ev_set_priority (&w->prepare, EV_MINPRI);
2226 ev_prepare_start (EV_A_ &w->prepare); 3067 ev_prepare_start (EV_A_ &w->prepare);
2227 3068
3069 ev_fork_init (&w->fork, embed_fork_cb);
3070 ev_fork_start (EV_A_ &w->fork);
3071
3072 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
3073
2228 ev_start (EV_A_ (W)w, 1); 3074 ev_start (EV_A_ (W)w, 1);
3075
3076 EV_FREQUENT_CHECK;
2229} 3077}
2230 3078
2231void 3079void
2232ev_embed_stop (EV_P_ ev_embed *w) 3080ev_embed_stop (EV_P_ ev_embed *w)
2233{ 3081{
2234 clear_pending (EV_A_ (W)w); 3082 clear_pending (EV_A_ (W)w);
2235 if (expect_false (!ev_is_active (w))) 3083 if (expect_false (!ev_is_active (w)))
2236 return; 3084 return;
2237 3085
3086 EV_FREQUENT_CHECK;
3087
2238 ev_io_stop (EV_A_ &w->io); 3088 ev_io_stop (EV_A_ &w->io);
2239 ev_prepare_stop (EV_A_ &w->prepare); 3089 ev_prepare_stop (EV_A_ &w->prepare);
3090 ev_fork_stop (EV_A_ &w->fork);
2240 3091
2241 ev_stop (EV_A_ (W)w); 3092 EV_FREQUENT_CHECK;
2242} 3093}
2243#endif 3094#endif
2244 3095
2245#if EV_FORK_ENABLE 3096#if EV_FORK_ENABLE
2246void 3097void
2247ev_fork_start (EV_P_ ev_fork *w) 3098ev_fork_start (EV_P_ ev_fork *w)
2248{ 3099{
2249 if (expect_false (ev_is_active (w))) 3100 if (expect_false (ev_is_active (w)))
2250 return; 3101 return;
3102
3103 EV_FREQUENT_CHECK;
2251 3104
2252 ev_start (EV_A_ (W)w, ++forkcnt); 3105 ev_start (EV_A_ (W)w, ++forkcnt);
2253 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3106 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2254 forks [forkcnt - 1] = w; 3107 forks [forkcnt - 1] = w;
3108
3109 EV_FREQUENT_CHECK;
2255} 3110}
2256 3111
2257void 3112void
2258ev_fork_stop (EV_P_ ev_fork *w) 3113ev_fork_stop (EV_P_ ev_fork *w)
2259{ 3114{
2260 clear_pending (EV_A_ (W)w); 3115 clear_pending (EV_A_ (W)w);
2261 if (expect_false (!ev_is_active (w))) 3116 if (expect_false (!ev_is_active (w)))
2262 return; 3117 return;
2263 3118
3119 EV_FREQUENT_CHECK;
3120
2264 { 3121 {
2265 int active = ((W)w)->active; 3122 int active = ev_active (w);
3123
2266 forks [active - 1] = forks [--forkcnt]; 3124 forks [active - 1] = forks [--forkcnt];
2267 ((W)forks [active - 1])->active = active; 3125 ev_active (forks [active - 1]) = active;
2268 } 3126 }
2269 3127
2270 ev_stop (EV_A_ (W)w); 3128 ev_stop (EV_A_ (W)w);
3129
3130 EV_FREQUENT_CHECK;
3131}
3132#endif
3133
3134#if EV_ASYNC_ENABLE
3135void
3136ev_async_start (EV_P_ ev_async *w)
3137{
3138 if (expect_false (ev_is_active (w)))
3139 return;
3140
3141 evpipe_init (EV_A);
3142
3143 EV_FREQUENT_CHECK;
3144
3145 ev_start (EV_A_ (W)w, ++asynccnt);
3146 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
3147 asyncs [asynccnt - 1] = w;
3148
3149 EV_FREQUENT_CHECK;
3150}
3151
3152void
3153ev_async_stop (EV_P_ ev_async *w)
3154{
3155 clear_pending (EV_A_ (W)w);
3156 if (expect_false (!ev_is_active (w)))
3157 return;
3158
3159 EV_FREQUENT_CHECK;
3160
3161 {
3162 int active = ev_active (w);
3163
3164 asyncs [active - 1] = asyncs [--asynccnt];
3165 ev_active (asyncs [active - 1]) = active;
3166 }
3167
3168 ev_stop (EV_A_ (W)w);
3169
3170 EV_FREQUENT_CHECK;
3171}
3172
3173void
3174ev_async_send (EV_P_ ev_async *w)
3175{
3176 w->sent = 1;
3177 evpipe_write (EV_A_ &gotasync);
2271} 3178}
2272#endif 3179#endif
2273 3180
2274/*****************************************************************************/ 3181/*****************************************************************************/
2275 3182
… …
2285once_cb (EV_P_ struct ev_once *once, int revents) 3192once_cb (EV_P_ struct ev_once *once, int revents)
2286{ 3193{
2287 void (*cb)(int revents, void *arg) = once->cb; 3194 void (*cb)(int revents, void *arg) = once->cb;
2288 void *arg = once->arg; 3195 void *arg = once->arg;
2289 3196
2290 ev_io_stop (EV_A_ &once->io); 3197 ev_io_stop (EV_A_ &once->io);
2291 ev_timer_stop (EV_A_ &once->to); 3198 ev_timer_stop (EV_A_ &once->to);
2292 ev_free (once); 3199 ev_free (once);
2293 3200
2294 cb (revents, arg); 3201 cb (revents, arg);
2295} 3202}
2296 3203
2297static void 3204static void
2298once_cb_io (EV_P_ ev_io *w, int revents) 3205once_cb_io (EV_P_ ev_io *w, int revents)
2299{ 3206{
2300 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3207 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3208
3209 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2301} 3210}
2302 3211
2303static void 3212static void
2304once_cb_to (EV_P_ ev_timer *w, int revents) 3213once_cb_to (EV_P_ ev_timer *w, int revents)
2305{ 3214{
2306 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3215 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3216
3217 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2307} 3218}
2308 3219
2309void 3220void
2310ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3221ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2311{ 3222{
… …
2333 ev_timer_set (&once->to, timeout, 0.); 3244 ev_timer_set (&once->to, timeout, 0.);
2334 ev_timer_start (EV_A_ &once->to); 3245 ev_timer_start (EV_A_ &once->to);
2335 } 3246 }
2336} 3247}
2337 3248
3249/*****************************************************************************/
3250
3251#if EV_WALK_ENABLE
3252void
3253ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3254{
3255 int i, j;
3256 ev_watcher_list *wl, *wn;
3257
3258 if (types & (EV_IO | EV_EMBED))
3259 for (i = 0; i < anfdmax; ++i)
3260 for (wl = anfds [i].head; wl; )
3261 {
3262 wn = wl->next;
3263
3264#if EV_EMBED_ENABLE
3265 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3266 {
3267 if (types & EV_EMBED)
3268 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3269 }
3270 else
3271#endif
3272#if EV_USE_INOTIFY
3273 if (ev_cb ((ev_io *)wl) == infy_cb)
3274 ;
3275 else
3276#endif
3277 if ((ev_io *)wl != &pipe_w)
3278 if (types & EV_IO)
3279 cb (EV_A_ EV_IO, wl);
3280
3281 wl = wn;
3282 }
3283
3284 if (types & (EV_TIMER | EV_STAT))
3285 for (i = timercnt + HEAP0; i-- > HEAP0; )
3286#if EV_STAT_ENABLE
3287 /*TODO: timer is not always active*/
3288 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3289 {
3290 if (types & EV_STAT)
3291 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3292 }
3293 else
3294#endif
3295 if (types & EV_TIMER)
3296 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3297
3298#if EV_PERIODIC_ENABLE
3299 if (types & EV_PERIODIC)
3300 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3301 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3302#endif
3303
3304#if EV_IDLE_ENABLE
3305 if (types & EV_IDLE)
3306 for (j = NUMPRI; i--; )
3307 for (i = idlecnt [j]; i--; )
3308 cb (EV_A_ EV_IDLE, idles [j][i]);
3309#endif
3310
3311#if EV_FORK_ENABLE
3312 if (types & EV_FORK)
3313 for (i = forkcnt; i--; )
3314 if (ev_cb (forks [i]) != embed_fork_cb)
3315 cb (EV_A_ EV_FORK, forks [i]);
3316#endif
3317
3318#if EV_ASYNC_ENABLE
3319 if (types & EV_ASYNC)
3320 for (i = asynccnt; i--; )
3321 cb (EV_A_ EV_ASYNC, asyncs [i]);
3322#endif
3323
3324 if (types & EV_PREPARE)
3325 for (i = preparecnt; i--; )
3326#if EV_EMBED_ENABLE
3327 if (ev_cb (prepares [i]) != embed_prepare_cb)
3328#endif
3329 cb (EV_A_ EV_PREPARE, prepares [i]);
3330
3331 if (types & EV_CHECK)
3332 for (i = checkcnt; i--; )
3333 cb (EV_A_ EV_CHECK, checks [i]);
3334
3335 if (types & EV_SIGNAL)
3336 for (i = 0; i < signalmax; ++i)
3337 for (wl = signals [i].head; wl; )
3338 {
3339 wn = wl->next;
3340 cb (EV_A_ EV_SIGNAL, wl);
3341 wl = wn;
3342 }
3343
3344 if (types & EV_CHILD)
3345 for (i = EV_PID_HASHSIZE; i--; )
3346 for (wl = childs [i]; wl; )
3347 {
3348 wn = wl->next;
3349 cb (EV_A_ EV_CHILD, wl);
3350 wl = wn;
3351 }
3352/* EV_STAT 0x00001000 /* stat data changed */
3353/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3354}
3355#endif
3356
2338#if EV_MULTIPLICITY 3357#if EV_MULTIPLICITY
2339 #include "ev_wrap.h" 3358 #include "ev_wrap.h"
2340#endif 3359#endif
2341 3360
2342#ifdef __cplusplus 3361#ifdef __cplusplus

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