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Comparing libev/ev.c (file contents):
Revision 1.223 by root, Sun Apr 6 14:34:50 2008 UTC vs.
Revision 1.320 by root, Fri Dec 4 20:25:06 2009 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 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 modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
47# include EV_CONFIG_H 47# include EV_CONFIG_H
48# else 48# else
49# include "config.h" 49# include "config.h"
50# endif 50# endif
51 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
52# if HAVE_CLOCK_GETTIME 66# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 67# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 68# define EV_USE_MONOTONIC 1
55# endif 69# endif
56# ifndef EV_USE_REALTIME 70# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 71# define EV_USE_REALTIME 0
58# endif 72# endif
59# else 73# else
60# ifndef EV_USE_MONOTONIC 74# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 75# define EV_USE_MONOTONIC 0
62# endif 76# endif
… …
119# else 133# else
120# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY 0
121# endif 135# endif
122# endif 136# endif
123 137
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1
141# else
142# define EV_USE_SIGNALFD 0
143# endif
144# endif
145
124# ifndef EV_USE_EVENTFD 146# ifndef EV_USE_EVENTFD
125# if HAVE_EVENTFD 147# if HAVE_EVENTFD
126# define EV_USE_EVENTFD 1 148# define EV_USE_EVENTFD 1
127# else 149# else
128# define EV_USE_EVENTFD 0 150# define EV_USE_EVENTFD 0
129# endif 151# endif
130# endif 152# endif
131 153
132#endif 154#endif
133 155
134#include <math.h> 156#include <math.h>
135#include <stdlib.h> 157#include <stdlib.h>
158#include <string.h>
136#include <fcntl.h> 159#include <fcntl.h>
137#include <stddef.h> 160#include <stddef.h>
138 161
139#include <stdio.h> 162#include <stdio.h>
140 163
… …
154#ifndef _WIN32 177#ifndef _WIN32
155# include <sys/time.h> 178# include <sys/time.h>
156# include <sys/wait.h> 179# include <sys/wait.h>
157# include <unistd.h> 180# include <unistd.h>
158#else 181#else
182# include <io.h>
159# define WIN32_LEAN_AND_MEAN 183# define WIN32_LEAN_AND_MEAN
160# include <windows.h> 184# include <windows.h>
161# ifndef EV_SELECT_IS_WINSOCKET 185# ifndef EV_SELECT_IS_WINSOCKET
162# define EV_SELECT_IS_WINSOCKET 1 186# define EV_SELECT_IS_WINSOCKET 1
163# endif 187# endif
164#endif 188#endif
165 189
166/* this block tries to deduce configuration from header-defined symbols and defaults */ 190/* this block tries to deduce configuration from header-defined symbols and defaults */
167 191
192/* try to deduce the maximum number of signals on this platform */
193#if defined (EV_NSIG)
194/* use what's provided */
195#elif defined (NSIG)
196# define EV_NSIG (NSIG)
197#elif defined(_NSIG)
198# define EV_NSIG (_NSIG)
199#elif defined (SIGMAX)
200# define EV_NSIG (SIGMAX+1)
201#elif defined (SIG_MAX)
202# define EV_NSIG (SIG_MAX+1)
203#elif defined (_SIG_MAX)
204# define EV_NSIG (_SIG_MAX+1)
205#elif defined (MAXSIG)
206# define EV_NSIG (MAXSIG+1)
207#elif defined (MAX_SIG)
208# define EV_NSIG (MAX_SIG+1)
209#elif defined (SIGARRAYSIZE)
210# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
211#elif defined (_sys_nsig)
212# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
213#else
214# error "unable to find value for NSIG, please report"
215/* to make it compile regardless, just remove the above line */
216# define EV_NSIG 65
217#endif
218
219#ifndef EV_USE_CLOCK_SYSCALL
220# if __linux && __GLIBC__ >= 2
221# define EV_USE_CLOCK_SYSCALL 1
222# else
223# define EV_USE_CLOCK_SYSCALL 0
224# endif
225#endif
226
168#ifndef EV_USE_MONOTONIC 227#ifndef EV_USE_MONOTONIC
228# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
229# define EV_USE_MONOTONIC 1
230# else
169# define EV_USE_MONOTONIC 0 231# define EV_USE_MONOTONIC 0
232# endif
170#endif 233#endif
171 234
172#ifndef EV_USE_REALTIME 235#ifndef EV_USE_REALTIME
173# define EV_USE_REALTIME 0 236# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174#endif 237#endif
175 238
176#ifndef EV_USE_NANOSLEEP 239#ifndef EV_USE_NANOSLEEP
240# if _POSIX_C_SOURCE >= 199309L
241# define EV_USE_NANOSLEEP 1
242# else
177# define EV_USE_NANOSLEEP 0 243# define EV_USE_NANOSLEEP 0
244# endif
178#endif 245#endif
179 246
180#ifndef EV_USE_SELECT 247#ifndef EV_USE_SELECT
181# define EV_USE_SELECT 1 248# define EV_USE_SELECT 1
182#endif 249#endif
… …
235# else 302# else
236# define EV_USE_EVENTFD 0 303# define EV_USE_EVENTFD 0
237# endif 304# endif
238#endif 305#endif
239 306
307#ifndef EV_USE_SIGNALFD
308# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
309# define EV_USE_SIGNALFD 1
310# else
311# define EV_USE_SIGNALFD 0
312# endif
313#endif
314
315#if 0 /* debugging */
316# define EV_VERIFY 3
317# define EV_USE_4HEAP 1
318# define EV_HEAP_CACHE_AT 1
319#endif
320
321#ifndef EV_VERIFY
322# define EV_VERIFY !EV_MINIMAL
323#endif
324
325#ifndef EV_USE_4HEAP
326# define EV_USE_4HEAP !EV_MINIMAL
327#endif
328
329#ifndef EV_HEAP_CACHE_AT
330# define EV_HEAP_CACHE_AT !EV_MINIMAL
331#endif
332
333/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
334/* which makes programs even slower. might work on other unices, too. */
335#if EV_USE_CLOCK_SYSCALL
336# include <syscall.h>
337# ifdef SYS_clock_gettime
338# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
339# undef EV_USE_MONOTONIC
340# define EV_USE_MONOTONIC 1
341# else
342# undef EV_USE_CLOCK_SYSCALL
343# define EV_USE_CLOCK_SYSCALL 0
344# endif
345#endif
346
240/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 347/* this block fixes any misconfiguration where we know we run into trouble otherwise */
241 348
242#ifndef CLOCK_MONOTONIC 349#ifndef CLOCK_MONOTONIC
243# undef EV_USE_MONOTONIC 350# undef EV_USE_MONOTONIC
244# define EV_USE_MONOTONIC 0 351# define EV_USE_MONOTONIC 0
… …
259# include <sys/select.h> 366# include <sys/select.h>
260# endif 367# endif
261#endif 368#endif
262 369
263#if EV_USE_INOTIFY 370#if EV_USE_INOTIFY
371# include <sys/utsname.h>
372# include <sys/statfs.h>
264# include <sys/inotify.h> 373# include <sys/inotify.h>
374/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
375# ifndef IN_DONT_FOLLOW
376# undef EV_USE_INOTIFY
377# define EV_USE_INOTIFY 0
378# endif
265#endif 379#endif
266 380
267#if EV_SELECT_IS_WINSOCKET 381#if EV_SELECT_IS_WINSOCKET
268# include <winsock.h> 382# include <winsock.h>
269#endif 383#endif
270 384
271#if EV_USE_EVENTFD 385#if EV_USE_EVENTFD
272/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 386/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
273# include <stdint.h> 387# include <stdint.h>
388# ifndef EFD_NONBLOCK
389# define EFD_NONBLOCK O_NONBLOCK
390# endif
391# ifndef EFD_CLOEXEC
392# ifdef O_CLOEXEC
393# define EFD_CLOEXEC O_CLOEXEC
394# else
395# define EFD_CLOEXEC 02000000
396# endif
397# endif
274# ifdef __cplusplus 398# ifdef __cplusplus
275extern "C" { 399extern "C" {
276# endif 400# endif
277int eventfd (unsigned int initval, int flags); 401int eventfd (unsigned int initval, int flags);
278# ifdef __cplusplus 402# ifdef __cplusplus
279} 403}
280# endif 404# endif
281#endif 405#endif
282 406
407#if EV_USE_SIGNALFD
408/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
409# include <stdint.h>
410# ifndef SFD_NONBLOCK
411# define SFD_NONBLOCK O_NONBLOCK
412# endif
413# ifndef SFD_CLOEXEC
414# ifdef O_CLOEXEC
415# define SFD_CLOEXEC O_CLOEXEC
416# else
417# define SFD_CLOEXEC 02000000
418# endif
419# endif
420# ifdef __cplusplus
421extern "C" {
422# endif
423int signalfd (int fd, const sigset_t *mask, int flags);
424
425struct signalfd_siginfo
426{
427 uint32_t ssi_signo;
428 char pad[128 - sizeof (uint32_t)];
429};
430# ifdef __cplusplus
431}
432# endif
433#endif
434
435
283/**/ 436/**/
437
438#if EV_VERIFY >= 3
439# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
440#else
441# define EV_FREQUENT_CHECK do { } while (0)
442#endif
284 443
285/* 444/*
286 * This is used to avoid floating point rounding problems. 445 * This is used to avoid floating point rounding problems.
287 * It is added to ev_rt_now when scheduling periodics 446 * It is added to ev_rt_now when scheduling periodics
288 * to ensure progress, time-wise, even when rounding 447 * to ensure progress, time-wise, even when rounding
… …
292 */ 451 */
293#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 452#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
294 453
295#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 454#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
296#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 455#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
297/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
298 456
299#if __GNUC__ >= 4 457#if __GNUC__ >= 4
300# define expect(expr,value) __builtin_expect ((expr),(value)) 458# define expect(expr,value) __builtin_expect ((expr),(value))
301# define noinline __attribute__ ((noinline)) 459# define noinline __attribute__ ((noinline))
302#else 460#else
… …
315# define inline_speed static noinline 473# define inline_speed static noinline
316#else 474#else
317# define inline_speed static inline 475# define inline_speed static inline
318#endif 476#endif
319 477
320#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 478#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
479
480#if EV_MINPRI == EV_MAXPRI
481# define ABSPRI(w) (((W)w), 0)
482#else
321#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 483# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
484#endif
322 485
323#define EMPTY /* required for microsofts broken pseudo-c compiler */ 486#define EMPTY /* required for microsofts broken pseudo-c compiler */
324#define EMPTY2(a,b) /* used to suppress some warnings */ 487#define EMPTY2(a,b) /* used to suppress some warnings */
325 488
326typedef ev_watcher *W; 489typedef ev_watcher *W;
327typedef ev_watcher_list *WL; 490typedef ev_watcher_list *WL;
328typedef ev_watcher_time *WT; 491typedef ev_watcher_time *WT;
329 492
330#if EV_USE_MONOTONIC 493#define ev_active(w) ((W)(w))->active
494#define ev_at(w) ((WT)(w))->at
495
496#if EV_USE_REALTIME
331/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 497/* sig_atomic_t is used to avoid per-thread variables or locking but still */
332/* giving it a reasonably high chance of working on typical architetcures */ 498/* giving it a reasonably high chance of working on typical architetcures */
499static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
500#endif
501
502#if EV_USE_MONOTONIC
333static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 503static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
504#endif
505
506#ifndef EV_FD_TO_WIN32_HANDLE
507# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
508#endif
509#ifndef EV_WIN32_HANDLE_TO_FD
510# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0)
511#endif
512#ifndef EV_WIN32_CLOSE_FD
513# define EV_WIN32_CLOSE_FD(fd) close (fd)
334#endif 514#endif
335 515
336#ifdef _WIN32 516#ifdef _WIN32
337# include "ev_win32.c" 517# include "ev_win32.c"
338#endif 518#endif
… …
346{ 526{
347 syserr_cb = cb; 527 syserr_cb = cb;
348} 528}
349 529
350static void noinline 530static void noinline
351syserr (const char *msg) 531ev_syserr (const char *msg)
352{ 532{
353 if (!msg) 533 if (!msg)
354 msg = "(libev) system error"; 534 msg = "(libev) system error";
355 535
356 if (syserr_cb) 536 if (syserr_cb)
… …
360 perror (msg); 540 perror (msg);
361 abort (); 541 abort ();
362 } 542 }
363} 543}
364 544
545static void *
546ev_realloc_emul (void *ptr, long size)
547{
548 /* some systems, notably openbsd and darwin, fail to properly
549 * implement realloc (x, 0) (as required by both ansi c-98 and
550 * the single unix specification, so work around them here.
551 */
552
553 if (size)
554 return realloc (ptr, size);
555
556 free (ptr);
557 return 0;
558}
559
365static void *(*alloc)(void *ptr, long size); 560static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
366 561
367void 562void
368ev_set_allocator (void *(*cb)(void *ptr, long size)) 563ev_set_allocator (void *(*cb)(void *ptr, long size))
369{ 564{
370 alloc = cb; 565 alloc = cb;
371} 566}
372 567
373inline_speed void * 568inline_speed void *
374ev_realloc (void *ptr, long size) 569ev_realloc (void *ptr, long size)
375{ 570{
376 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 571 ptr = alloc (ptr, size);
377 572
378 if (!ptr && size) 573 if (!ptr && size)
379 { 574 {
380 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 575 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
381 abort (); 576 abort ();
… …
387#define ev_malloc(size) ev_realloc (0, (size)) 582#define ev_malloc(size) ev_realloc (0, (size))
388#define ev_free(ptr) ev_realloc ((ptr), 0) 583#define ev_free(ptr) ev_realloc ((ptr), 0)
389 584
390/*****************************************************************************/ 585/*****************************************************************************/
391 586
587/* set in reify when reification needed */
588#define EV_ANFD_REIFY 1
589
590/* file descriptor info structure */
392typedef struct 591typedef struct
393{ 592{
394 WL head; 593 WL head;
395 unsigned char events; 594 unsigned char events; /* the events watched for */
595 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
596 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
396 unsigned char reify; 597 unsigned char unused;
598#if EV_USE_EPOLL
599 unsigned int egen; /* generation counter to counter epoll bugs */
600#endif
397#if EV_SELECT_IS_WINSOCKET 601#if EV_SELECT_IS_WINSOCKET
398 SOCKET handle; 602 SOCKET handle;
399#endif 603#endif
400} ANFD; 604} ANFD;
401 605
606/* stores the pending event set for a given watcher */
402typedef struct 607typedef struct
403{ 608{
404 W w; 609 W w;
405 int events; 610 int events; /* the pending event set for the given watcher */
406} ANPENDING; 611} ANPENDING;
407 612
408#if EV_USE_INOTIFY 613#if EV_USE_INOTIFY
614/* hash table entry per inotify-id */
409typedef struct 615typedef struct
410{ 616{
411 WL head; 617 WL head;
412} ANFS; 618} ANFS;
619#endif
620
621/* Heap Entry */
622#if EV_HEAP_CACHE_AT
623 /* a heap element */
624 typedef struct {
625 ev_tstamp at;
626 WT w;
627 } ANHE;
628
629 #define ANHE_w(he) (he).w /* access watcher, read-write */
630 #define ANHE_at(he) (he).at /* access cached at, read-only */
631 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
632#else
633 /* a heap element */
634 typedef WT ANHE;
635
636 #define ANHE_w(he) (he)
637 #define ANHE_at(he) (he)->at
638 #define ANHE_at_cache(he)
413#endif 639#endif
414 640
415#if EV_MULTIPLICITY 641#if EV_MULTIPLICITY
416 642
417 struct ev_loop 643 struct ev_loop
… …
436 662
437 static int ev_default_loop_ptr; 663 static int ev_default_loop_ptr;
438 664
439#endif 665#endif
440 666
667#if EV_MINIMAL < 2
668# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
669# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
670# define EV_INVOKE_PENDING invoke_cb (EV_A)
671#else
672# define EV_RELEASE_CB (void)0
673# define EV_ACQUIRE_CB (void)0
674# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
675#endif
676
677#define EVUNLOOP_RECURSE 0x80
678
441/*****************************************************************************/ 679/*****************************************************************************/
442 680
681#ifndef EV_HAVE_EV_TIME
443ev_tstamp 682ev_tstamp
444ev_time (void) 683ev_time (void)
445{ 684{
446#if EV_USE_REALTIME 685#if EV_USE_REALTIME
686 if (expect_true (have_realtime))
687 {
447 struct timespec ts; 688 struct timespec ts;
448 clock_gettime (CLOCK_REALTIME, &ts); 689 clock_gettime (CLOCK_REALTIME, &ts);
449 return ts.tv_sec + ts.tv_nsec * 1e-9; 690 return ts.tv_sec + ts.tv_nsec * 1e-9;
450#else 691 }
692#endif
693
451 struct timeval tv; 694 struct timeval tv;
452 gettimeofday (&tv, 0); 695 gettimeofday (&tv, 0);
453 return tv.tv_sec + tv.tv_usec * 1e-6; 696 return tv.tv_sec + tv.tv_usec * 1e-6;
454#endif
455} 697}
698#endif
456 699
457ev_tstamp inline_size 700inline_size ev_tstamp
458get_clock (void) 701get_clock (void)
459{ 702{
460#if EV_USE_MONOTONIC 703#if EV_USE_MONOTONIC
461 if (expect_true (have_monotonic)) 704 if (expect_true (have_monotonic))
462 { 705 {
… …
495 struct timeval tv; 738 struct timeval tv;
496 739
497 tv.tv_sec = (time_t)delay; 740 tv.tv_sec = (time_t)delay;
498 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 741 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
499 742
743 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
744 /* something not guaranteed by newer posix versions, but guaranteed */
745 /* by older ones */
500 select (0, 0, 0, 0, &tv); 746 select (0, 0, 0, 0, &tv);
501#endif 747#endif
502 } 748 }
503} 749}
504 750
505/*****************************************************************************/ 751/*****************************************************************************/
506 752
507int inline_size 753#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
754
755/* find a suitable new size for the given array, */
756/* hopefully by rounding to a ncie-to-malloc size */
757inline_size int
508array_nextsize (int elem, int cur, int cnt) 758array_nextsize (int elem, int cur, int cnt)
509{ 759{
510 int ncur = cur + 1; 760 int ncur = cur + 1;
511 761
512 do 762 do
513 ncur <<= 1; 763 ncur <<= 1;
514 while (cnt > ncur); 764 while (cnt > ncur);
515 765
516 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ 766 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
517 if (elem * ncur > 4096) 767 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
518 { 768 {
519 ncur *= elem; 769 ncur *= elem;
520 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; 770 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
521 ncur = ncur - sizeof (void *) * 4; 771 ncur = ncur - sizeof (void *) * 4;
522 ncur /= elem; 772 ncur /= elem;
523 } 773 }
524 774
525 return ncur; 775 return ncur;
… …
529array_realloc (int elem, void *base, int *cur, int cnt) 779array_realloc (int elem, void *base, int *cur, int cnt)
530{ 780{
531 *cur = array_nextsize (elem, *cur, cnt); 781 *cur = array_nextsize (elem, *cur, cnt);
532 return ev_realloc (base, elem * *cur); 782 return ev_realloc (base, elem * *cur);
533} 783}
784
785#define array_init_zero(base,count) \
786 memset ((void *)(base), 0, sizeof (*(base)) * (count))
534 787
535#define array_needsize(type,base,cur,cnt,init) \ 788#define array_needsize(type,base,cur,cnt,init) \
536 if (expect_false ((cnt) > (cur))) \ 789 if (expect_false ((cnt) > (cur))) \
537 { \ 790 { \
538 int ocur_ = (cur); \ 791 int ocur_ = (cur); \
… …
550 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 803 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
551 } 804 }
552#endif 805#endif
553 806
554#define array_free(stem, idx) \ 807#define array_free(stem, idx) \
555 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 808 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
556 809
557/*****************************************************************************/ 810/*****************************************************************************/
811
812/* dummy callback for pending events */
813static void noinline
814pendingcb (EV_P_ ev_prepare *w, int revents)
815{
816}
558 817
559void noinline 818void noinline
560ev_feed_event (EV_P_ void *w, int revents) 819ev_feed_event (EV_P_ void *w, int revents)
561{ 820{
562 W w_ = (W)w; 821 W w_ = (W)w;
… …
571 pendings [pri][w_->pending - 1].w = w_; 830 pendings [pri][w_->pending - 1].w = w_;
572 pendings [pri][w_->pending - 1].events = revents; 831 pendings [pri][w_->pending - 1].events = revents;
573 } 832 }
574} 833}
575 834
576void inline_speed 835inline_speed void
836feed_reverse (EV_P_ W w)
837{
838 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
839 rfeeds [rfeedcnt++] = w;
840}
841
842inline_size void
843feed_reverse_done (EV_P_ int revents)
844{
845 do
846 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
847 while (rfeedcnt);
848}
849
850inline_speed void
577queue_events (EV_P_ W *events, int eventcnt, int type) 851queue_events (EV_P_ W *events, int eventcnt, int type)
578{ 852{
579 int i; 853 int i;
580 854
581 for (i = 0; i < eventcnt; ++i) 855 for (i = 0; i < eventcnt; ++i)
582 ev_feed_event (EV_A_ events [i], type); 856 ev_feed_event (EV_A_ events [i], type);
583} 857}
584 858
585/*****************************************************************************/ 859/*****************************************************************************/
586 860
587void inline_size 861inline_speed void
588anfds_init (ANFD *base, int count)
589{
590 while (count--)
591 {
592 base->head = 0;
593 base->events = EV_NONE;
594 base->reify = 0;
595
596 ++base;
597 }
598}
599
600void inline_speed
601fd_event (EV_P_ int fd, int revents) 862fd_event_nc (EV_P_ int fd, int revents)
602{ 863{
603 ANFD *anfd = anfds + fd; 864 ANFD *anfd = anfds + fd;
604 ev_io *w; 865 ev_io *w;
605 866
606 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 867 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
610 if (ev) 871 if (ev)
611 ev_feed_event (EV_A_ (W)w, ev); 872 ev_feed_event (EV_A_ (W)w, ev);
612 } 873 }
613} 874}
614 875
876/* do not submit kernel events for fds that have reify set */
877/* because that means they changed while we were polling for new events */
878inline_speed void
879fd_event (EV_P_ int fd, int revents)
880{
881 ANFD *anfd = anfds + fd;
882
883 if (expect_true (!anfd->reify))
884 fd_event_nc (EV_A_ fd, revents);
885}
886
615void 887void
616ev_feed_fd_event (EV_P_ int fd, int revents) 888ev_feed_fd_event (EV_P_ int fd, int revents)
617{ 889{
618 if (fd >= 0 && fd < anfdmax) 890 if (fd >= 0 && fd < anfdmax)
619 fd_event (EV_A_ fd, revents); 891 fd_event_nc (EV_A_ fd, revents);
620} 892}
621 893
622void inline_size 894/* make sure the external fd watch events are in-sync */
895/* with the kernel/libev internal state */
896inline_size void
623fd_reify (EV_P) 897fd_reify (EV_P)
624{ 898{
625 int i; 899 int i;
626 900
627 for (i = 0; i < fdchangecnt; ++i) 901 for (i = 0; i < fdchangecnt; ++i)
… …
636 events |= (unsigned char)w->events; 910 events |= (unsigned char)w->events;
637 911
638#if EV_SELECT_IS_WINSOCKET 912#if EV_SELECT_IS_WINSOCKET
639 if (events) 913 if (events)
640 { 914 {
641 unsigned long argp; 915 unsigned long arg;
642 #ifdef EV_FD_TO_WIN32_HANDLE
643 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 916 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
644 #else
645 anfd->handle = _get_osfhandle (fd);
646 #endif
647 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 917 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
648 } 918 }
649#endif 919#endif
650 920
651 { 921 {
652 unsigned char o_events = anfd->events; 922 unsigned char o_events = anfd->events;
653 unsigned char o_reify = anfd->reify; 923 unsigned char o_reify = anfd->reify;
654 924
655 anfd->reify = 0; 925 anfd->reify = 0;
656 anfd->events = events; 926 anfd->events = events;
657 927
658 if (o_events != events || o_reify & EV_IOFDSET) 928 if (o_events != events || o_reify & EV__IOFDSET)
659 backend_modify (EV_A_ fd, o_events, events); 929 backend_modify (EV_A_ fd, o_events, events);
660 } 930 }
661 } 931 }
662 932
663 fdchangecnt = 0; 933 fdchangecnt = 0;
664} 934}
665 935
666void inline_size 936/* something about the given fd changed */
937inline_size void
667fd_change (EV_P_ int fd, int flags) 938fd_change (EV_P_ int fd, int flags)
668{ 939{
669 unsigned char reify = anfds [fd].reify; 940 unsigned char reify = anfds [fd].reify;
670 anfds [fd].reify |= flags; 941 anfds [fd].reify |= flags;
671 942
… …
675 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 946 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
676 fdchanges [fdchangecnt - 1] = fd; 947 fdchanges [fdchangecnt - 1] = fd;
677 } 948 }
678} 949}
679 950
680void inline_speed 951/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
952inline_speed void
681fd_kill (EV_P_ int fd) 953fd_kill (EV_P_ int fd)
682{ 954{
683 ev_io *w; 955 ev_io *w;
684 956
685 while ((w = (ev_io *)anfds [fd].head)) 957 while ((w = (ev_io *)anfds [fd].head))
… …
687 ev_io_stop (EV_A_ w); 959 ev_io_stop (EV_A_ w);
688 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 960 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
689 } 961 }
690} 962}
691 963
692int inline_size 964/* check whether the given fd is atcually valid, for error recovery */
965inline_size int
693fd_valid (int fd) 966fd_valid (int fd)
694{ 967{
695#ifdef _WIN32 968#ifdef _WIN32
696 return _get_osfhandle (fd) != -1; 969 return _get_osfhandle (fd) != -1;
697#else 970#else
… …
705{ 978{
706 int fd; 979 int fd;
707 980
708 for (fd = 0; fd < anfdmax; ++fd) 981 for (fd = 0; fd < anfdmax; ++fd)
709 if (anfds [fd].events) 982 if (anfds [fd].events)
710 if (!fd_valid (fd) == -1 && errno == EBADF) 983 if (!fd_valid (fd) && errno == EBADF)
711 fd_kill (EV_A_ fd); 984 fd_kill (EV_A_ fd);
712} 985}
713 986
714/* called on ENOMEM in select/poll to kill some fds and retry */ 987/* called on ENOMEM in select/poll to kill some fds and retry */
715static void noinline 988static void noinline
… …
719 992
720 for (fd = anfdmax; fd--; ) 993 for (fd = anfdmax; fd--; )
721 if (anfds [fd].events) 994 if (anfds [fd].events)
722 { 995 {
723 fd_kill (EV_A_ fd); 996 fd_kill (EV_A_ fd);
724 return; 997 break;
725 } 998 }
726} 999}
727 1000
728/* usually called after fork if backend needs to re-arm all fds from scratch */ 1001/* usually called after fork if backend needs to re-arm all fds from scratch */
729static void noinline 1002static void noinline
… …
733 1006
734 for (fd = 0; fd < anfdmax; ++fd) 1007 for (fd = 0; fd < anfdmax; ++fd)
735 if (anfds [fd].events) 1008 if (anfds [fd].events)
736 { 1009 {
737 anfds [fd].events = 0; 1010 anfds [fd].events = 0;
1011 anfds [fd].emask = 0;
738 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1012 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
739 } 1013 }
740} 1014}
741 1015
742/*****************************************************************************/ 1016/*****************************************************************************/
743 1017
744void inline_speed 1018/*
745upheap (WT *heap, int k) 1019 * the heap functions want a real array index. array index 0 uis guaranteed to not
746{ 1020 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
747 WT w = heap [k]; 1021 * the branching factor of the d-tree.
1022 */
748 1023
749 while (k) 1024/*
750 { 1025 * at the moment we allow libev the luxury of two heaps,
751 int p = (k - 1) >> 1; 1026 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
1027 * which is more cache-efficient.
1028 * the difference is about 5% with 50000+ watchers.
1029 */
1030#if EV_USE_4HEAP
752 1031
753 if (heap [p]->at <= w->at) 1032#define DHEAP 4
1033#define HEAP0 (DHEAP - 1) /* index of first element in heap */
1034#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
1035#define UPHEAP_DONE(p,k) ((p) == (k))
1036
1037/* away from the root */
1038inline_speed void
1039downheap (ANHE *heap, int N, int k)
1040{
1041 ANHE he = heap [k];
1042 ANHE *E = heap + N + HEAP0;
1043
1044 for (;;)
1045 {
1046 ev_tstamp minat;
1047 ANHE *minpos;
1048 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1049
1050 /* find minimum child */
1051 if (expect_true (pos + DHEAP - 1 < E))
1052 {
1053 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1054 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1055 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1056 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1057 }
1058 else if (pos < E)
1059 {
1060 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1061 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1062 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1063 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1064 }
1065 else
754 break; 1066 break;
755 1067
1068 if (ANHE_at (he) <= minat)
1069 break;
1070
1071 heap [k] = *minpos;
1072 ev_active (ANHE_w (*minpos)) = k;
1073
1074 k = minpos - heap;
1075 }
1076
1077 heap [k] = he;
1078 ev_active (ANHE_w (he)) = k;
1079}
1080
1081#else /* 4HEAP */
1082
1083#define HEAP0 1
1084#define HPARENT(k) ((k) >> 1)
1085#define UPHEAP_DONE(p,k) (!(p))
1086
1087/* away from the root */
1088inline_speed void
1089downheap (ANHE *heap, int N, int k)
1090{
1091 ANHE he = heap [k];
1092
1093 for (;;)
1094 {
1095 int c = k << 1;
1096
1097 if (c >= N + HEAP0)
1098 break;
1099
1100 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1101 ? 1 : 0;
1102
1103 if (ANHE_at (he) <= ANHE_at (heap [c]))
1104 break;
1105
1106 heap [k] = heap [c];
1107 ev_active (ANHE_w (heap [k])) = k;
1108
1109 k = c;
1110 }
1111
1112 heap [k] = he;
1113 ev_active (ANHE_w (he)) = k;
1114}
1115#endif
1116
1117/* towards the root */
1118inline_speed void
1119upheap (ANHE *heap, int k)
1120{
1121 ANHE he = heap [k];
1122
1123 for (;;)
1124 {
1125 int p = HPARENT (k);
1126
1127 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1128 break;
1129
756 heap [k] = heap [p]; 1130 heap [k] = heap [p];
757 ((W)heap [k])->active = k + 1; 1131 ev_active (ANHE_w (heap [k])) = k;
758 k = p; 1132 k = p;
759 } 1133 }
760 1134
761 heap [k] = w; 1135 heap [k] = he;
762 ((W)heap [k])->active = k + 1; 1136 ev_active (ANHE_w (he)) = k;
763} 1137}
764 1138
765void inline_speed 1139/* move an element suitably so it is in a correct place */
766downheap (WT *heap, int N, int k) 1140inline_size void
767{
768 WT w = heap [k];
769
770 for (;;)
771 {
772 int c = (k << 1) + 1;
773
774 if (c >= N)
775 break;
776
777 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
778 ? 1 : 0;
779
780 if (w->at <= heap [c]->at)
781 break;
782
783 heap [k] = heap [c];
784 ((W)heap [k])->active = k + 1;
785
786 k = c;
787 }
788
789 heap [k] = w;
790 ((W)heap [k])->active = k + 1;
791}
792
793void inline_size
794adjustheap (WT *heap, int N, int k) 1141adjustheap (ANHE *heap, int N, int k)
795{ 1142{
1143 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
796 upheap (heap, k); 1144 upheap (heap, k);
1145 else
797 downheap (heap, N, k); 1146 downheap (heap, N, k);
1147}
1148
1149/* rebuild the heap: this function is used only once and executed rarely */
1150inline_size void
1151reheap (ANHE *heap, int N)
1152{
1153 int i;
1154
1155 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1156 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1157 for (i = 0; i < N; ++i)
1158 upheap (heap, i + HEAP0);
798} 1159}
799 1160
800/*****************************************************************************/ 1161/*****************************************************************************/
801 1162
1163/* associate signal watchers to a signal signal */
802typedef struct 1164typedef struct
803{ 1165{
1166 EV_ATOMIC_T pending;
1167#if EV_MULTIPLICITY
1168 EV_P;
1169#endif
804 WL head; 1170 WL head;
805 EV_ATOMIC_T gotsig;
806} ANSIG; 1171} ANSIG;
807 1172
808static ANSIG *signals; 1173static ANSIG signals [EV_NSIG - 1];
809static int signalmax;
810
811static EV_ATOMIC_T gotsig;
812
813void inline_size
814signals_init (ANSIG *base, int count)
815{
816 while (count--)
817 {
818 base->head = 0;
819 base->gotsig = 0;
820
821 ++base;
822 }
823}
824 1174
825/*****************************************************************************/ 1175/*****************************************************************************/
826 1176
827void inline_speed 1177/* used to prepare libev internal fd's */
1178/* this is not fork-safe */
1179inline_speed void
828fd_intern (int fd) 1180fd_intern (int fd)
829{ 1181{
830#ifdef _WIN32 1182#ifdef _WIN32
831 int arg = 1; 1183 unsigned long arg = 1;
832 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1184 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
833#else 1185#else
834 fcntl (fd, F_SETFD, FD_CLOEXEC); 1186 fcntl (fd, F_SETFD, FD_CLOEXEC);
835 fcntl (fd, F_SETFL, O_NONBLOCK); 1187 fcntl (fd, F_SETFL, O_NONBLOCK);
836#endif 1188#endif
837} 1189}
838 1190
839static void noinline 1191static void noinline
840evpipe_init (EV_P) 1192evpipe_init (EV_P)
841{ 1193{
842 if (!ev_is_active (&pipeev)) 1194 if (!ev_is_active (&pipe_w))
843 { 1195 {
844#if EV_USE_EVENTFD 1196#if EV_USE_EVENTFD
1197 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1198 if (evfd < 0 && errno == EINVAL)
845 if ((evfd = eventfd (0, 0)) >= 0) 1199 evfd = eventfd (0, 0);
1200
1201 if (evfd >= 0)
846 { 1202 {
847 evpipe [0] = -1; 1203 evpipe [0] = -1;
848 fd_intern (evfd); 1204 fd_intern (evfd); /* doing it twice doesn't hurt */
849 ev_io_set (&pipeev, evfd, EV_READ); 1205 ev_io_set (&pipe_w, evfd, EV_READ);
850 } 1206 }
851 else 1207 else
852#endif 1208#endif
853 { 1209 {
854 while (pipe (evpipe)) 1210 while (pipe (evpipe))
855 syserr ("(libev) error creating signal/async pipe"); 1211 ev_syserr ("(libev) error creating signal/async pipe");
856 1212
857 fd_intern (evpipe [0]); 1213 fd_intern (evpipe [0]);
858 fd_intern (evpipe [1]); 1214 fd_intern (evpipe [1]);
859 ev_io_set (&pipeev, evpipe [0], EV_READ); 1215 ev_io_set (&pipe_w, evpipe [0], EV_READ);
860 } 1216 }
861 1217
862 ev_io_start (EV_A_ &pipeev); 1218 ev_io_start (EV_A_ &pipe_w);
863 ev_unref (EV_A); /* watcher should not keep loop alive */ 1219 ev_unref (EV_A); /* watcher should not keep loop alive */
864 } 1220 }
865} 1221}
866 1222
867void inline_size 1223inline_size void
868evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1224evpipe_write (EV_P_ EV_ATOMIC_T *flag)
869{ 1225{
870 if (!*flag) 1226 if (!*flag)
871 { 1227 {
872 int old_errno = errno; /* save errno because write might clobber it */ 1228 int old_errno = errno; /* save errno because write might clobber it */
… …
885 1241
886 errno = old_errno; 1242 errno = old_errno;
887 } 1243 }
888} 1244}
889 1245
1246/* called whenever the libev signal pipe */
1247/* got some events (signal, async) */
890static void 1248static void
891pipecb (EV_P_ ev_io *iow, int revents) 1249pipecb (EV_P_ ev_io *iow, int revents)
892{ 1250{
1251 int i;
1252
893#if EV_USE_EVENTFD 1253#if EV_USE_EVENTFD
894 if (evfd >= 0) 1254 if (evfd >= 0)
895 { 1255 {
896 uint64_t counter = 1; 1256 uint64_t counter;
897 read (evfd, &counter, sizeof (uint64_t)); 1257 read (evfd, &counter, sizeof (uint64_t));
898 } 1258 }
899 else 1259 else
900#endif 1260#endif
901 { 1261 {
902 char dummy; 1262 char dummy;
903 read (evpipe [0], &dummy, 1); 1263 read (evpipe [0], &dummy, 1);
904 } 1264 }
905 1265
906 if (gotsig && ev_is_default_loop (EV_A)) 1266 if (sig_pending)
907 { 1267 {
908 int signum; 1268 sig_pending = 0;
909 gotsig = 0;
910 1269
911 for (signum = signalmax; signum--; ) 1270 for (i = EV_NSIG - 1; i--; )
912 if (signals [signum].gotsig) 1271 if (expect_false (signals [i].pending))
913 ev_feed_signal_event (EV_A_ signum + 1); 1272 ev_feed_signal_event (EV_A_ i + 1);
914 } 1273 }
915 1274
916#if EV_ASYNC_ENABLE 1275#if EV_ASYNC_ENABLE
917 if (gotasync) 1276 if (async_pending)
918 { 1277 {
919 int i; 1278 async_pending = 0;
920 gotasync = 0;
921 1279
922 for (i = asynccnt; i--; ) 1280 for (i = asynccnt; i--; )
923 if (asyncs [i]->sent) 1281 if (asyncs [i]->sent)
924 { 1282 {
925 asyncs [i]->sent = 0; 1283 asyncs [i]->sent = 0;
… …
933 1291
934static void 1292static void
935ev_sighandler (int signum) 1293ev_sighandler (int signum)
936{ 1294{
937#if EV_MULTIPLICITY 1295#if EV_MULTIPLICITY
938 struct ev_loop *loop = &default_loop_struct; 1296 EV_P = signals [signum - 1].loop;
939#endif 1297#endif
940 1298
941#if _WIN32 1299#if _WIN32
942 signal (signum, ev_sighandler); 1300 signal (signum, ev_sighandler);
943#endif 1301#endif
944 1302
945 signals [signum - 1].gotsig = 1; 1303 signals [signum - 1].pending = 1;
946 evpipe_write (EV_A_ &gotsig); 1304 evpipe_write (EV_A_ &sig_pending);
947} 1305}
948 1306
949void noinline 1307void noinline
950ev_feed_signal_event (EV_P_ int signum) 1308ev_feed_signal_event (EV_P_ int signum)
951{ 1309{
952 WL w; 1310 WL w;
953 1311
1312 if (expect_false (signum <= 0 || signum > EV_NSIG))
1313 return;
1314
1315 --signum;
1316
954#if EV_MULTIPLICITY 1317#if EV_MULTIPLICITY
955 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1318 /* it is permissible to try to feed a signal to the wrong loop */
956#endif 1319 /* or, likely more useful, feeding a signal nobody is waiting for */
957 1320
958 --signum; 1321 if (expect_false (signals [signum].loop != EV_A))
959
960 if (signum < 0 || signum >= signalmax)
961 return; 1322 return;
1323#endif
962 1324
963 signals [signum].gotsig = 0; 1325 signals [signum].pending = 0;
964 1326
965 for (w = signals [signum].head; w; w = w->next) 1327 for (w = signals [signum].head; w; w = w->next)
966 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1328 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
967} 1329}
968 1330
1331#if EV_USE_SIGNALFD
1332static void
1333sigfdcb (EV_P_ ev_io *iow, int revents)
1334{
1335 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1336
1337 for (;;)
1338 {
1339 ssize_t res = read (sigfd, si, sizeof (si));
1340
1341 /* not ISO-C, as res might be -1, but works with SuS */
1342 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1343 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1344
1345 if (res < (ssize_t)sizeof (si))
1346 break;
1347 }
1348}
1349#endif
1350
969/*****************************************************************************/ 1351/*****************************************************************************/
970 1352
971static WL childs [EV_PID_HASHSIZE]; 1353static WL childs [EV_PID_HASHSIZE];
972 1354
973#ifndef _WIN32 1355#ifndef _WIN32
… …
976 1358
977#ifndef WIFCONTINUED 1359#ifndef WIFCONTINUED
978# define WIFCONTINUED(status) 0 1360# define WIFCONTINUED(status) 0
979#endif 1361#endif
980 1362
981void inline_speed 1363/* handle a single child status event */
1364inline_speed void
982child_reap (EV_P_ int chain, int pid, int status) 1365child_reap (EV_P_ int chain, int pid, int status)
983{ 1366{
984 ev_child *w; 1367 ev_child *w;
985 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1368 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
986 1369
… …
999 1382
1000#ifndef WCONTINUED 1383#ifndef WCONTINUED
1001# define WCONTINUED 0 1384# define WCONTINUED 0
1002#endif 1385#endif
1003 1386
1387/* called on sigchld etc., calls waitpid */
1004static void 1388static void
1005childcb (EV_P_ ev_signal *sw, int revents) 1389childcb (EV_P_ ev_signal *sw, int revents)
1006{ 1390{
1007 int pid, status; 1391 int pid, status;
1008 1392
… …
1089 /* kqueue is borked on everything but netbsd apparently */ 1473 /* kqueue is borked on everything but netbsd apparently */
1090 /* it usually doesn't work correctly on anything but sockets and pipes */ 1474 /* it usually doesn't work correctly on anything but sockets and pipes */
1091 flags &= ~EVBACKEND_KQUEUE; 1475 flags &= ~EVBACKEND_KQUEUE;
1092#endif 1476#endif
1093#ifdef __APPLE__ 1477#ifdef __APPLE__
1094 // flags &= ~EVBACKEND_KQUEUE; for documentation 1478 /* only select works correctly on that "unix-certified" platform */
1095 flags &= ~EVBACKEND_POLL; 1479 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1480 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1096#endif 1481#endif
1097 1482
1098 return flags; 1483 return flags;
1099} 1484}
1100 1485
… …
1114ev_backend (EV_P) 1499ev_backend (EV_P)
1115{ 1500{
1116 return backend; 1501 return backend;
1117} 1502}
1118 1503
1504#if EV_MINIMAL < 2
1119unsigned int 1505unsigned int
1120ev_loop_count (EV_P) 1506ev_loop_count (EV_P)
1121{ 1507{
1122 return loop_count; 1508 return loop_count;
1123} 1509}
1124 1510
1511unsigned int
1512ev_loop_depth (EV_P)
1513{
1514 return loop_depth;
1515}
1516
1125void 1517void
1126ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1518ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1127{ 1519{
1128 io_blocktime = interval; 1520 io_blocktime = interval;
1129} 1521}
… …
1132ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1524ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1133{ 1525{
1134 timeout_blocktime = interval; 1526 timeout_blocktime = interval;
1135} 1527}
1136 1528
1529void
1530ev_set_userdata (EV_P_ void *data)
1531{
1532 userdata = data;
1533}
1534
1535void *
1536ev_userdata (EV_P)
1537{
1538 return userdata;
1539}
1540
1541void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1542{
1543 invoke_cb = invoke_pending_cb;
1544}
1545
1546void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1547{
1548 release_cb = release;
1549 acquire_cb = acquire;
1550}
1551#endif
1552
1553/* initialise a loop structure, must be zero-initialised */
1137static void noinline 1554static void noinline
1138loop_init (EV_P_ unsigned int flags) 1555loop_init (EV_P_ unsigned int flags)
1139{ 1556{
1140 if (!backend) 1557 if (!backend)
1141 { 1558 {
1559#if EV_USE_REALTIME
1560 if (!have_realtime)
1561 {
1562 struct timespec ts;
1563
1564 if (!clock_gettime (CLOCK_REALTIME, &ts))
1565 have_realtime = 1;
1566 }
1567#endif
1568
1142#if EV_USE_MONOTONIC 1569#if EV_USE_MONOTONIC
1570 if (!have_monotonic)
1143 { 1571 {
1144 struct timespec ts; 1572 struct timespec ts;
1573
1145 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1574 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1146 have_monotonic = 1; 1575 have_monotonic = 1;
1147 } 1576 }
1148#endif 1577#endif
1578
1579 /* pid check not overridable via env */
1580#ifndef _WIN32
1581 if (flags & EVFLAG_FORKCHECK)
1582 curpid = getpid ();
1583#endif
1584
1585 if (!(flags & EVFLAG_NOENV)
1586 && !enable_secure ()
1587 && getenv ("LIBEV_FLAGS"))
1588 flags = atoi (getenv ("LIBEV_FLAGS"));
1149 1589
1150 ev_rt_now = ev_time (); 1590 ev_rt_now = ev_time ();
1151 mn_now = get_clock (); 1591 mn_now = get_clock ();
1152 now_floor = mn_now; 1592 now_floor = mn_now;
1153 rtmn_diff = ev_rt_now - mn_now; 1593 rtmn_diff = ev_rt_now - mn_now;
1594#if EV_MINIMAL < 2
1595 invoke_cb = ev_invoke_pending;
1596#endif
1154 1597
1155 io_blocktime = 0.; 1598 io_blocktime = 0.;
1156 timeout_blocktime = 0.; 1599 timeout_blocktime = 0.;
1157 backend = 0; 1600 backend = 0;
1158 backend_fd = -1; 1601 backend_fd = -1;
1159 gotasync = 0; 1602 sig_pending = 0;
1603#if EV_ASYNC_ENABLE
1604 async_pending = 0;
1605#endif
1160#if EV_USE_INOTIFY 1606#if EV_USE_INOTIFY
1161 fs_fd = -2; 1607 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1162#endif 1608#endif
1163 1609#if EV_USE_SIGNALFD
1164 /* pid check not overridable via env */ 1610 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2;
1165#ifndef _WIN32
1166 if (flags & EVFLAG_FORKCHECK)
1167 curpid = getpid ();
1168#endif 1611#endif
1169 1612
1170 if (!(flags & EVFLAG_NOENV)
1171 && !enable_secure ()
1172 && getenv ("LIBEV_FLAGS"))
1173 flags = atoi (getenv ("LIBEV_FLAGS"));
1174
1175 if (!(flags & 0x0000ffffUL)) 1613 if (!(flags & 0x0000ffffU))
1176 flags |= ev_recommended_backends (); 1614 flags |= ev_recommended_backends ();
1177 1615
1178#if EV_USE_PORT 1616#if EV_USE_PORT
1179 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1617 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1180#endif 1618#endif
… …
1189#endif 1627#endif
1190#if EV_USE_SELECT 1628#if EV_USE_SELECT
1191 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1629 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1192#endif 1630#endif
1193 1631
1632 ev_prepare_init (&pending_w, pendingcb);
1633
1194 ev_init (&pipeev, pipecb); 1634 ev_init (&pipe_w, pipecb);
1195 ev_set_priority (&pipeev, EV_MAXPRI); 1635 ev_set_priority (&pipe_w, EV_MAXPRI);
1196 } 1636 }
1197} 1637}
1198 1638
1639/* free up a loop structure */
1199static void noinline 1640static void noinline
1200loop_destroy (EV_P) 1641loop_destroy (EV_P)
1201{ 1642{
1202 int i; 1643 int i;
1203 1644
1204 if (ev_is_active (&pipeev)) 1645 if (ev_is_active (&pipe_w))
1205 { 1646 {
1206 ev_ref (EV_A); /* signal watcher */ 1647 /*ev_ref (EV_A);*/
1207 ev_io_stop (EV_A_ &pipeev); 1648 /*ev_io_stop (EV_A_ &pipe_w);*/
1208 1649
1209#if EV_USE_EVENTFD 1650#if EV_USE_EVENTFD
1210 if (evfd >= 0) 1651 if (evfd >= 0)
1211 close (evfd); 1652 close (evfd);
1212#endif 1653#endif
1213 1654
1214 if (evpipe [0] >= 0) 1655 if (evpipe [0] >= 0)
1215 { 1656 {
1216 close (evpipe [0]); 1657 EV_WIN32_CLOSE_FD (evpipe [0]);
1217 close (evpipe [1]); 1658 EV_WIN32_CLOSE_FD (evpipe [1]);
1218 } 1659 }
1219 } 1660 }
1661
1662#if EV_USE_SIGNALFD
1663 if (ev_is_active (&sigfd_w))
1664 close (sigfd);
1665#endif
1220 1666
1221#if EV_USE_INOTIFY 1667#if EV_USE_INOTIFY
1222 if (fs_fd >= 0) 1668 if (fs_fd >= 0)
1223 close (fs_fd); 1669 close (fs_fd);
1224#endif 1670#endif
… …
1248#if EV_IDLE_ENABLE 1694#if EV_IDLE_ENABLE
1249 array_free (idle, [i]); 1695 array_free (idle, [i]);
1250#endif 1696#endif
1251 } 1697 }
1252 1698
1253 ev_free (anfds); anfdmax = 0; 1699 ev_free (anfds); anfds = 0; anfdmax = 0;
1254 1700
1255 /* have to use the microsoft-never-gets-it-right macro */ 1701 /* have to use the microsoft-never-gets-it-right macro */
1702 array_free (rfeed, EMPTY);
1256 array_free (fdchange, EMPTY); 1703 array_free (fdchange, EMPTY);
1257 array_free (timer, EMPTY); 1704 array_free (timer, EMPTY);
1258#if EV_PERIODIC_ENABLE 1705#if EV_PERIODIC_ENABLE
1259 array_free (periodic, EMPTY); 1706 array_free (periodic, EMPTY);
1260#endif 1707#endif
… …
1268#endif 1715#endif
1269 1716
1270 backend = 0; 1717 backend = 0;
1271} 1718}
1272 1719
1720#if EV_USE_INOTIFY
1273void inline_size infy_fork (EV_P); 1721inline_size void infy_fork (EV_P);
1722#endif
1274 1723
1275void inline_size 1724inline_size void
1276loop_fork (EV_P) 1725loop_fork (EV_P)
1277{ 1726{
1278#if EV_USE_PORT 1727#if EV_USE_PORT
1279 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1728 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1280#endif 1729#endif
… …
1286#endif 1735#endif
1287#if EV_USE_INOTIFY 1736#if EV_USE_INOTIFY
1288 infy_fork (EV_A); 1737 infy_fork (EV_A);
1289#endif 1738#endif
1290 1739
1291 if (ev_is_active (&pipeev)) 1740 if (ev_is_active (&pipe_w))
1292 { 1741 {
1293 /* this "locks" the handlers against writing to the pipe */ 1742 /* this "locks" the handlers against writing to the pipe */
1294 /* while we modify the fd vars */ 1743 /* while we modify the fd vars */
1295 gotsig = 1; 1744 sig_pending = 1;
1296#if EV_ASYNC_ENABLE 1745#if EV_ASYNC_ENABLE
1297 gotasync = 1; 1746 async_pending = 1;
1298#endif 1747#endif
1299 1748
1300 ev_ref (EV_A); 1749 ev_ref (EV_A);
1301 ev_io_stop (EV_A_ &pipeev); 1750 ev_io_stop (EV_A_ &pipe_w);
1302 1751
1303#if EV_USE_EVENTFD 1752#if EV_USE_EVENTFD
1304 if (evfd >= 0) 1753 if (evfd >= 0)
1305 close (evfd); 1754 close (evfd);
1306#endif 1755#endif
1307 1756
1308 if (evpipe [0] >= 0) 1757 if (evpipe [0] >= 0)
1309 { 1758 {
1310 close (evpipe [0]); 1759 EV_WIN32_CLOSE_FD (evpipe [0]);
1311 close (evpipe [1]); 1760 EV_WIN32_CLOSE_FD (evpipe [1]);
1312 } 1761 }
1313 1762
1314 evpipe_init (EV_A); 1763 evpipe_init (EV_A);
1315 /* now iterate over everything, in case we missed something */ 1764 /* now iterate over everything, in case we missed something */
1316 pipecb (EV_A_ &pipeev, EV_READ); 1765 pipecb (EV_A_ &pipe_w, EV_READ);
1317 } 1766 }
1318 1767
1319 postfork = 0; 1768 postfork = 0;
1320} 1769}
1321 1770
1322#if EV_MULTIPLICITY 1771#if EV_MULTIPLICITY
1772
1323struct ev_loop * 1773struct ev_loop *
1324ev_loop_new (unsigned int flags) 1774ev_loop_new (unsigned int flags)
1325{ 1775{
1326 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1776 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1327 1777
1328 memset (loop, 0, sizeof (struct ev_loop)); 1778 memset (EV_A, 0, sizeof (struct ev_loop));
1329
1330 loop_init (EV_A_ flags); 1779 loop_init (EV_A_ flags);
1331 1780
1332 if (ev_backend (EV_A)) 1781 if (ev_backend (EV_A))
1333 return loop; 1782 return EV_A;
1334 1783
1335 return 0; 1784 return 0;
1336} 1785}
1337 1786
1338void 1787void
… …
1345void 1794void
1346ev_loop_fork (EV_P) 1795ev_loop_fork (EV_P)
1347{ 1796{
1348 postfork = 1; /* must be in line with ev_default_fork */ 1797 postfork = 1; /* must be in line with ev_default_fork */
1349} 1798}
1799#endif /* multiplicity */
1350 1800
1801#if EV_VERIFY
1802static void noinline
1803verify_watcher (EV_P_ W w)
1804{
1805 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1806
1807 if (w->pending)
1808 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1809}
1810
1811static void noinline
1812verify_heap (EV_P_ ANHE *heap, int N)
1813{
1814 int i;
1815
1816 for (i = HEAP0; i < N + HEAP0; ++i)
1817 {
1818 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1819 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1820 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1821
1822 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1823 }
1824}
1825
1826static void noinline
1827array_verify (EV_P_ W *ws, int cnt)
1828{
1829 while (cnt--)
1830 {
1831 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1832 verify_watcher (EV_A_ ws [cnt]);
1833 }
1834}
1835#endif
1836
1837#if EV_MINIMAL < 2
1838void
1839ev_loop_verify (EV_P)
1840{
1841#if EV_VERIFY
1842 int i;
1843 WL w;
1844
1845 assert (activecnt >= -1);
1846
1847 assert (fdchangemax >= fdchangecnt);
1848 for (i = 0; i < fdchangecnt; ++i)
1849 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1850
1851 assert (anfdmax >= 0);
1852 for (i = 0; i < anfdmax; ++i)
1853 for (w = anfds [i].head; w; w = w->next)
1854 {
1855 verify_watcher (EV_A_ (W)w);
1856 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1857 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1858 }
1859
1860 assert (timermax >= timercnt);
1861 verify_heap (EV_A_ timers, timercnt);
1862
1863#if EV_PERIODIC_ENABLE
1864 assert (periodicmax >= periodiccnt);
1865 verify_heap (EV_A_ periodics, periodiccnt);
1866#endif
1867
1868 for (i = NUMPRI; i--; )
1869 {
1870 assert (pendingmax [i] >= pendingcnt [i]);
1871#if EV_IDLE_ENABLE
1872 assert (idleall >= 0);
1873 assert (idlemax [i] >= idlecnt [i]);
1874 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1875#endif
1876 }
1877
1878#if EV_FORK_ENABLE
1879 assert (forkmax >= forkcnt);
1880 array_verify (EV_A_ (W *)forks, forkcnt);
1881#endif
1882
1883#if EV_ASYNC_ENABLE
1884 assert (asyncmax >= asynccnt);
1885 array_verify (EV_A_ (W *)asyncs, asynccnt);
1886#endif
1887
1888 assert (preparemax >= preparecnt);
1889 array_verify (EV_A_ (W *)prepares, preparecnt);
1890
1891 assert (checkmax >= checkcnt);
1892 array_verify (EV_A_ (W *)checks, checkcnt);
1893
1894# if 0
1895 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1896 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1897# endif
1898#endif
1899}
1351#endif 1900#endif
1352 1901
1353#if EV_MULTIPLICITY 1902#if EV_MULTIPLICITY
1354struct ev_loop * 1903struct ev_loop *
1355ev_default_loop_init (unsigned int flags) 1904ev_default_loop_init (unsigned int flags)
… …
1359#endif 1908#endif
1360{ 1909{
1361 if (!ev_default_loop_ptr) 1910 if (!ev_default_loop_ptr)
1362 { 1911 {
1363#if EV_MULTIPLICITY 1912#if EV_MULTIPLICITY
1364 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1913 EV_P = ev_default_loop_ptr = &default_loop_struct;
1365#else 1914#else
1366 ev_default_loop_ptr = 1; 1915 ev_default_loop_ptr = 1;
1367#endif 1916#endif
1368 1917
1369 loop_init (EV_A_ flags); 1918 loop_init (EV_A_ flags);
… …
1386 1935
1387void 1936void
1388ev_default_destroy (void) 1937ev_default_destroy (void)
1389{ 1938{
1390#if EV_MULTIPLICITY 1939#if EV_MULTIPLICITY
1391 struct ev_loop *loop = ev_default_loop_ptr; 1940 EV_P = ev_default_loop_ptr;
1392#endif 1941#endif
1942
1943 ev_default_loop_ptr = 0;
1393 1944
1394#ifndef _WIN32 1945#ifndef _WIN32
1395 ev_ref (EV_A); /* child watcher */ 1946 ev_ref (EV_A); /* child watcher */
1396 ev_signal_stop (EV_A_ &childev); 1947 ev_signal_stop (EV_A_ &childev);
1397#endif 1948#endif
… …
1401 1952
1402void 1953void
1403ev_default_fork (void) 1954ev_default_fork (void)
1404{ 1955{
1405#if EV_MULTIPLICITY 1956#if EV_MULTIPLICITY
1406 struct ev_loop *loop = ev_default_loop_ptr; 1957 EV_P = ev_default_loop_ptr;
1407#endif 1958#endif
1408 1959
1409 if (backend)
1410 postfork = 1; /* must be in line with ev_loop_fork */ 1960 postfork = 1; /* must be in line with ev_loop_fork */
1411} 1961}
1412 1962
1413/*****************************************************************************/ 1963/*****************************************************************************/
1414 1964
1415void 1965void
1416ev_invoke (EV_P_ void *w, int revents) 1966ev_invoke (EV_P_ void *w, int revents)
1417{ 1967{
1418 EV_CB_INVOKE ((W)w, revents); 1968 EV_CB_INVOKE ((W)w, revents);
1419} 1969}
1420 1970
1421void inline_speed 1971unsigned int
1422call_pending (EV_P) 1972ev_pending_count (EV_P)
1973{
1974 int pri;
1975 unsigned int count = 0;
1976
1977 for (pri = NUMPRI; pri--; )
1978 count += pendingcnt [pri];
1979
1980 return count;
1981}
1982
1983void noinline
1984ev_invoke_pending (EV_P)
1423{ 1985{
1424 int pri; 1986 int pri;
1425 1987
1426 for (pri = NUMPRI; pri--; ) 1988 for (pri = NUMPRI; pri--; )
1427 while (pendingcnt [pri]) 1989 while (pendingcnt [pri])
1428 { 1990 {
1429 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1991 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1430 1992
1431 if (expect_true (p->w))
1432 {
1433 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 1993 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1994 /* ^ this is no longer true, as pending_w could be here */
1434 1995
1435 p->w->pending = 0; 1996 p->w->pending = 0;
1436 EV_CB_INVOKE (p->w, p->events); 1997 EV_CB_INVOKE (p->w, p->events);
1437 } 1998 EV_FREQUENT_CHECK;
1438 } 1999 }
1439} 2000}
1440 2001
1441void inline_size
1442timers_reify (EV_P)
1443{
1444 while (timercnt && ((WT)timers [0])->at <= mn_now)
1445 {
1446 ev_timer *w = (ev_timer *)timers [0];
1447
1448 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1449
1450 /* first reschedule or stop timer */
1451 if (w->repeat)
1452 {
1453 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1454
1455 ((WT)w)->at += w->repeat;
1456 if (((WT)w)->at < mn_now)
1457 ((WT)w)->at = mn_now;
1458
1459 downheap (timers, timercnt, 0);
1460 }
1461 else
1462 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1463
1464 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1465 }
1466}
1467
1468#if EV_PERIODIC_ENABLE
1469void inline_size
1470periodics_reify (EV_P)
1471{
1472 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1473 {
1474 ev_periodic *w = (ev_periodic *)periodics [0];
1475
1476 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1477
1478 /* first reschedule or stop timer */
1479 if (w->reschedule_cb)
1480 {
1481 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1482 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1483 downheap (periodics, periodiccnt, 0);
1484 }
1485 else if (w->interval)
1486 {
1487 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1488 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1489 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1490 downheap (periodics, periodiccnt, 0);
1491 }
1492 else
1493 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1494
1495 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1496 }
1497}
1498
1499static void noinline
1500periodics_reschedule (EV_P)
1501{
1502 int i;
1503
1504 /* adjust periodics after time jump */
1505 for (i = 0; i < periodiccnt; ++i)
1506 {
1507 ev_periodic *w = (ev_periodic *)periodics [i];
1508
1509 if (w->reschedule_cb)
1510 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1511 else if (w->interval)
1512 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1513 }
1514
1515 /* now rebuild the heap */
1516 for (i = periodiccnt >> 1; i--; )
1517 downheap (periodics, periodiccnt, i);
1518}
1519#endif
1520
1521#if EV_IDLE_ENABLE 2002#if EV_IDLE_ENABLE
1522void inline_size 2003/* make idle watchers pending. this handles the "call-idle */
2004/* only when higher priorities are idle" logic */
2005inline_size void
1523idle_reify (EV_P) 2006idle_reify (EV_P)
1524{ 2007{
1525 if (expect_false (idleall)) 2008 if (expect_false (idleall))
1526 { 2009 {
1527 int pri; 2010 int pri;
… …
1539 } 2022 }
1540 } 2023 }
1541} 2024}
1542#endif 2025#endif
1543 2026
1544void inline_speed 2027/* make timers pending */
2028inline_size void
2029timers_reify (EV_P)
2030{
2031 EV_FREQUENT_CHECK;
2032
2033 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
2034 {
2035 do
2036 {
2037 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2038
2039 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2040
2041 /* first reschedule or stop timer */
2042 if (w->repeat)
2043 {
2044 ev_at (w) += w->repeat;
2045 if (ev_at (w) < mn_now)
2046 ev_at (w) = mn_now;
2047
2048 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
2049
2050 ANHE_at_cache (timers [HEAP0]);
2051 downheap (timers, timercnt, HEAP0);
2052 }
2053 else
2054 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2055
2056 EV_FREQUENT_CHECK;
2057 feed_reverse (EV_A_ (W)w);
2058 }
2059 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2060
2061 feed_reverse_done (EV_A_ EV_TIMEOUT);
2062 }
2063}
2064
2065#if EV_PERIODIC_ENABLE
2066/* make periodics pending */
2067inline_size void
2068periodics_reify (EV_P)
2069{
2070 EV_FREQUENT_CHECK;
2071
2072 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2073 {
2074 int feed_count = 0;
2075
2076 do
2077 {
2078 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2079
2080 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2081
2082 /* first reschedule or stop timer */
2083 if (w->reschedule_cb)
2084 {
2085 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2086
2087 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
2088
2089 ANHE_at_cache (periodics [HEAP0]);
2090 downheap (periodics, periodiccnt, HEAP0);
2091 }
2092 else if (w->interval)
2093 {
2094 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2095 /* if next trigger time is not sufficiently in the future, put it there */
2096 /* this might happen because of floating point inexactness */
2097 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2098 {
2099 ev_at (w) += w->interval;
2100
2101 /* if interval is unreasonably low we might still have a time in the past */
2102 /* so correct this. this will make the periodic very inexact, but the user */
2103 /* has effectively asked to get triggered more often than possible */
2104 if (ev_at (w) < ev_rt_now)
2105 ev_at (w) = ev_rt_now;
2106 }
2107
2108 ANHE_at_cache (periodics [HEAP0]);
2109 downheap (periodics, periodiccnt, HEAP0);
2110 }
2111 else
2112 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2113
2114 EV_FREQUENT_CHECK;
2115 feed_reverse (EV_A_ (W)w);
2116 }
2117 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
2118
2119 feed_reverse_done (EV_A_ EV_PERIODIC);
2120 }
2121}
2122
2123/* simply recalculate all periodics */
2124/* TODO: maybe ensure that at leats one event happens when jumping forward? */
2125static void noinline
2126periodics_reschedule (EV_P)
2127{
2128 int i;
2129
2130 /* adjust periodics after time jump */
2131 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
2132 {
2133 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2134
2135 if (w->reschedule_cb)
2136 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2137 else if (w->interval)
2138 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2139
2140 ANHE_at_cache (periodics [i]);
2141 }
2142
2143 reheap (periodics, periodiccnt);
2144}
2145#endif
2146
2147/* adjust all timers by a given offset */
2148static void noinline
2149timers_reschedule (EV_P_ ev_tstamp adjust)
2150{
2151 int i;
2152
2153 for (i = 0; i < timercnt; ++i)
2154 {
2155 ANHE *he = timers + i + HEAP0;
2156 ANHE_w (*he)->at += adjust;
2157 ANHE_at_cache (*he);
2158 }
2159}
2160
2161/* fetch new monotonic and realtime times from the kernel */
2162/* also detetc if there was a timejump, and act accordingly */
2163inline_speed void
1545time_update (EV_P_ ev_tstamp max_block) 2164time_update (EV_P_ ev_tstamp max_block)
1546{ 2165{
1547 int i;
1548
1549#if EV_USE_MONOTONIC 2166#if EV_USE_MONOTONIC
1550 if (expect_true (have_monotonic)) 2167 if (expect_true (have_monotonic))
1551 { 2168 {
2169 int i;
1552 ev_tstamp odiff = rtmn_diff; 2170 ev_tstamp odiff = rtmn_diff;
1553 2171
1554 mn_now = get_clock (); 2172 mn_now = get_clock ();
1555 2173
1556 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2174 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1574 */ 2192 */
1575 for (i = 4; --i; ) 2193 for (i = 4; --i; )
1576 { 2194 {
1577 rtmn_diff = ev_rt_now - mn_now; 2195 rtmn_diff = ev_rt_now - mn_now;
1578 2196
1579 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 2197 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1580 return; /* all is well */ 2198 return; /* all is well */
1581 2199
1582 ev_rt_now = ev_time (); 2200 ev_rt_now = ev_time ();
1583 mn_now = get_clock (); 2201 mn_now = get_clock ();
1584 now_floor = mn_now; 2202 now_floor = mn_now;
1585 } 2203 }
1586 2204
2205 /* no timer adjustment, as the monotonic clock doesn't jump */
2206 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1587# if EV_PERIODIC_ENABLE 2207# if EV_PERIODIC_ENABLE
1588 periodics_reschedule (EV_A); 2208 periodics_reschedule (EV_A);
1589# endif 2209# endif
1590 /* no timer adjustment, as the monotonic clock doesn't jump */
1591 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1592 } 2210 }
1593 else 2211 else
1594#endif 2212#endif
1595 { 2213 {
1596 ev_rt_now = ev_time (); 2214 ev_rt_now = ev_time ();
1597 2215
1598 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2216 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1599 { 2217 {
2218 /* adjust timers. this is easy, as the offset is the same for all of them */
2219 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1600#if EV_PERIODIC_ENABLE 2220#if EV_PERIODIC_ENABLE
1601 periodics_reschedule (EV_A); 2221 periodics_reschedule (EV_A);
1602#endif 2222#endif
1603 /* adjust timers. this is easy, as the offset is the same for all of them */
1604 for (i = 0; i < timercnt; ++i)
1605 ((WT)timers [i])->at += ev_rt_now - mn_now;
1606 } 2223 }
1607 2224
1608 mn_now = ev_rt_now; 2225 mn_now = ev_rt_now;
1609 } 2226 }
1610} 2227}
1611 2228
1612void 2229void
1613ev_ref (EV_P)
1614{
1615 ++activecnt;
1616}
1617
1618void
1619ev_unref (EV_P)
1620{
1621 --activecnt;
1622}
1623
1624static int loop_done;
1625
1626void
1627ev_loop (EV_P_ int flags) 2230ev_loop (EV_P_ int flags)
1628{ 2231{
2232#if EV_MINIMAL < 2
2233 ++loop_depth;
2234#endif
2235
2236 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2237
1629 loop_done = EVUNLOOP_CANCEL; 2238 loop_done = EVUNLOOP_CANCEL;
1630 2239
1631 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2240 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1632 2241
1633 do 2242 do
1634 { 2243 {
2244#if EV_VERIFY >= 2
2245 ev_loop_verify (EV_A);
2246#endif
2247
1635#ifndef _WIN32 2248#ifndef _WIN32
1636 if (expect_false (curpid)) /* penalise the forking check even more */ 2249 if (expect_false (curpid)) /* penalise the forking check even more */
1637 if (expect_false (getpid () != curpid)) 2250 if (expect_false (getpid () != curpid))
1638 { 2251 {
1639 curpid = getpid (); 2252 curpid = getpid ();
… …
1645 /* we might have forked, so queue fork handlers */ 2258 /* we might have forked, so queue fork handlers */
1646 if (expect_false (postfork)) 2259 if (expect_false (postfork))
1647 if (forkcnt) 2260 if (forkcnt)
1648 { 2261 {
1649 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2262 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1650 call_pending (EV_A); 2263 EV_INVOKE_PENDING;
1651 } 2264 }
1652#endif 2265#endif
1653 2266
1654 /* queue prepare watchers (and execute them) */ 2267 /* queue prepare watchers (and execute them) */
1655 if (expect_false (preparecnt)) 2268 if (expect_false (preparecnt))
1656 { 2269 {
1657 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2270 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1658 call_pending (EV_A); 2271 EV_INVOKE_PENDING;
1659 } 2272 }
1660 2273
1661 if (expect_false (!activecnt)) 2274 if (expect_false (loop_done))
1662 break; 2275 break;
1663 2276
1664 /* we might have forked, so reify kernel state if necessary */ 2277 /* we might have forked, so reify kernel state if necessary */
1665 if (expect_false (postfork)) 2278 if (expect_false (postfork))
1666 loop_fork (EV_A); 2279 loop_fork (EV_A);
… …
1673 ev_tstamp waittime = 0.; 2286 ev_tstamp waittime = 0.;
1674 ev_tstamp sleeptime = 0.; 2287 ev_tstamp sleeptime = 0.;
1675 2288
1676 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2289 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1677 { 2290 {
2291 /* remember old timestamp for io_blocktime calculation */
2292 ev_tstamp prev_mn_now = mn_now;
2293
1678 /* update time to cancel out callback processing overhead */ 2294 /* update time to cancel out callback processing overhead */
1679 time_update (EV_A_ 1e100); 2295 time_update (EV_A_ 1e100);
1680 2296
1681 waittime = MAX_BLOCKTIME; 2297 waittime = MAX_BLOCKTIME;
1682 2298
1683 if (timercnt) 2299 if (timercnt)
1684 { 2300 {
1685 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 2301 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1686 if (waittime > to) waittime = to; 2302 if (waittime > to) waittime = to;
1687 } 2303 }
1688 2304
1689#if EV_PERIODIC_ENABLE 2305#if EV_PERIODIC_ENABLE
1690 if (periodiccnt) 2306 if (periodiccnt)
1691 { 2307 {
1692 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 2308 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1693 if (waittime > to) waittime = to; 2309 if (waittime > to) waittime = to;
1694 } 2310 }
1695#endif 2311#endif
1696 2312
2313 /* don't let timeouts decrease the waittime below timeout_blocktime */
1697 if (expect_false (waittime < timeout_blocktime)) 2314 if (expect_false (waittime < timeout_blocktime))
1698 waittime = timeout_blocktime; 2315 waittime = timeout_blocktime;
1699 2316
1700 sleeptime = waittime - backend_fudge; 2317 /* extra check because io_blocktime is commonly 0 */
1701
1702 if (expect_true (sleeptime > io_blocktime)) 2318 if (expect_false (io_blocktime))
1703 sleeptime = io_blocktime;
1704
1705 if (sleeptime)
1706 { 2319 {
2320 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2321
2322 if (sleeptime > waittime - backend_fudge)
2323 sleeptime = waittime - backend_fudge;
2324
2325 if (expect_true (sleeptime > 0.))
2326 {
1707 ev_sleep (sleeptime); 2327 ev_sleep (sleeptime);
1708 waittime -= sleeptime; 2328 waittime -= sleeptime;
2329 }
1709 } 2330 }
1710 } 2331 }
1711 2332
2333#if EV_MINIMAL < 2
1712 ++loop_count; 2334 ++loop_count;
2335#endif
2336 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1713 backend_poll (EV_A_ waittime); 2337 backend_poll (EV_A_ waittime);
2338 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1714 2339
1715 /* update ev_rt_now, do magic */ 2340 /* update ev_rt_now, do magic */
1716 time_update (EV_A_ waittime + sleeptime); 2341 time_update (EV_A_ waittime + sleeptime);
1717 } 2342 }
1718 2343
… …
1729 2354
1730 /* queue check watchers, to be executed first */ 2355 /* queue check watchers, to be executed first */
1731 if (expect_false (checkcnt)) 2356 if (expect_false (checkcnt))
1732 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2357 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1733 2358
1734 call_pending (EV_A); 2359 EV_INVOKE_PENDING;
1735 } 2360 }
1736 while (expect_true ( 2361 while (expect_true (
1737 activecnt 2362 activecnt
1738 && !loop_done 2363 && !loop_done
1739 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2364 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1740 )); 2365 ));
1741 2366
1742 if (loop_done == EVUNLOOP_ONE) 2367 if (loop_done == EVUNLOOP_ONE)
1743 loop_done = EVUNLOOP_CANCEL; 2368 loop_done = EVUNLOOP_CANCEL;
2369
2370#if EV_MINIMAL < 2
2371 --loop_depth;
2372#endif
1744} 2373}
1745 2374
1746void 2375void
1747ev_unloop (EV_P_ int how) 2376ev_unloop (EV_P_ int how)
1748{ 2377{
1749 loop_done = how; 2378 loop_done = how;
1750} 2379}
1751 2380
2381void
2382ev_ref (EV_P)
2383{
2384 ++activecnt;
2385}
2386
2387void
2388ev_unref (EV_P)
2389{
2390 --activecnt;
2391}
2392
2393void
2394ev_now_update (EV_P)
2395{
2396 time_update (EV_A_ 1e100);
2397}
2398
2399void
2400ev_suspend (EV_P)
2401{
2402 ev_now_update (EV_A);
2403}
2404
2405void
2406ev_resume (EV_P)
2407{
2408 ev_tstamp mn_prev = mn_now;
2409
2410 ev_now_update (EV_A);
2411 timers_reschedule (EV_A_ mn_now - mn_prev);
2412#if EV_PERIODIC_ENABLE
2413 /* TODO: really do this? */
2414 periodics_reschedule (EV_A);
2415#endif
2416}
2417
1752/*****************************************************************************/ 2418/*****************************************************************************/
2419/* singly-linked list management, used when the expected list length is short */
1753 2420
1754void inline_size 2421inline_size void
1755wlist_add (WL *head, WL elem) 2422wlist_add (WL *head, WL elem)
1756{ 2423{
1757 elem->next = *head; 2424 elem->next = *head;
1758 *head = elem; 2425 *head = elem;
1759} 2426}
1760 2427
1761void inline_size 2428inline_size void
1762wlist_del (WL *head, WL elem) 2429wlist_del (WL *head, WL elem)
1763{ 2430{
1764 while (*head) 2431 while (*head)
1765 { 2432 {
1766 if (*head == elem) 2433 if (expect_true (*head == elem))
1767 { 2434 {
1768 *head = elem->next; 2435 *head = elem->next;
1769 return; 2436 break;
1770 } 2437 }
1771 2438
1772 head = &(*head)->next; 2439 head = &(*head)->next;
1773 } 2440 }
1774} 2441}
1775 2442
1776void inline_speed 2443/* internal, faster, version of ev_clear_pending */
2444inline_speed void
1777clear_pending (EV_P_ W w) 2445clear_pending (EV_P_ W w)
1778{ 2446{
1779 if (w->pending) 2447 if (w->pending)
1780 { 2448 {
1781 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2449 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1782 w->pending = 0; 2450 w->pending = 0;
1783 } 2451 }
1784} 2452}
1785 2453
1786int 2454int
… …
1790 int pending = w_->pending; 2458 int pending = w_->pending;
1791 2459
1792 if (expect_true (pending)) 2460 if (expect_true (pending))
1793 { 2461 {
1794 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2462 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2463 p->w = (W)&pending_w;
1795 w_->pending = 0; 2464 w_->pending = 0;
1796 p->w = 0;
1797 return p->events; 2465 return p->events;
1798 } 2466 }
1799 else 2467 else
1800 return 0; 2468 return 0;
1801} 2469}
1802 2470
1803void inline_size 2471inline_size void
1804pri_adjust (EV_P_ W w) 2472pri_adjust (EV_P_ W w)
1805{ 2473{
1806 int pri = w->priority; 2474 int pri = ev_priority (w);
1807 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2475 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1808 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2476 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1809 w->priority = pri; 2477 ev_set_priority (w, pri);
1810} 2478}
1811 2479
1812void inline_speed 2480inline_speed void
1813ev_start (EV_P_ W w, int active) 2481ev_start (EV_P_ W w, int active)
1814{ 2482{
1815 pri_adjust (EV_A_ w); 2483 pri_adjust (EV_A_ w);
1816 w->active = active; 2484 w->active = active;
1817 ev_ref (EV_A); 2485 ev_ref (EV_A);
1818} 2486}
1819 2487
1820void inline_size 2488inline_size void
1821ev_stop (EV_P_ W w) 2489ev_stop (EV_P_ W w)
1822{ 2490{
1823 ev_unref (EV_A); 2491 ev_unref (EV_A);
1824 w->active = 0; 2492 w->active = 0;
1825} 2493}
… …
1832 int fd = w->fd; 2500 int fd = w->fd;
1833 2501
1834 if (expect_false (ev_is_active (w))) 2502 if (expect_false (ev_is_active (w)))
1835 return; 2503 return;
1836 2504
1837 assert (("ev_io_start called with negative fd", fd >= 0)); 2505 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2506 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2507
2508 EV_FREQUENT_CHECK;
1838 2509
1839 ev_start (EV_A_ (W)w, 1); 2510 ev_start (EV_A_ (W)w, 1);
1840 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2511 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1841 wlist_add (&anfds[fd].head, (WL)w); 2512 wlist_add (&anfds[fd].head, (WL)w);
1842 2513
1843 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2514 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1844 w->events &= ~EV_IOFDSET; 2515 w->events &= ~EV__IOFDSET;
2516
2517 EV_FREQUENT_CHECK;
1845} 2518}
1846 2519
1847void noinline 2520void noinline
1848ev_io_stop (EV_P_ ev_io *w) 2521ev_io_stop (EV_P_ ev_io *w)
1849{ 2522{
1850 clear_pending (EV_A_ (W)w); 2523 clear_pending (EV_A_ (W)w);
1851 if (expect_false (!ev_is_active (w))) 2524 if (expect_false (!ev_is_active (w)))
1852 return; 2525 return;
1853 2526
1854 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2527 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2528
2529 EV_FREQUENT_CHECK;
1855 2530
1856 wlist_del (&anfds[w->fd].head, (WL)w); 2531 wlist_del (&anfds[w->fd].head, (WL)w);
1857 ev_stop (EV_A_ (W)w); 2532 ev_stop (EV_A_ (W)w);
1858 2533
1859 fd_change (EV_A_ w->fd, 1); 2534 fd_change (EV_A_ w->fd, 1);
2535
2536 EV_FREQUENT_CHECK;
1860} 2537}
1861 2538
1862void noinline 2539void noinline
1863ev_timer_start (EV_P_ ev_timer *w) 2540ev_timer_start (EV_P_ ev_timer *w)
1864{ 2541{
1865 if (expect_false (ev_is_active (w))) 2542 if (expect_false (ev_is_active (w)))
1866 return; 2543 return;
1867 2544
1868 ((WT)w)->at += mn_now; 2545 ev_at (w) += mn_now;
1869 2546
1870 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2547 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1871 2548
2549 EV_FREQUENT_CHECK;
2550
2551 ++timercnt;
1872 ev_start (EV_A_ (W)w, ++timercnt); 2552 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1873 array_needsize (WT, timers, timermax, timercnt, EMPTY2); 2553 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1874 timers [timercnt - 1] = (WT)w; 2554 ANHE_w (timers [ev_active (w)]) = (WT)w;
1875 upheap (timers, timercnt - 1); 2555 ANHE_at_cache (timers [ev_active (w)]);
2556 upheap (timers, ev_active (w));
1876 2557
2558 EV_FREQUENT_CHECK;
2559
1877 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ 2560 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1878} 2561}
1879 2562
1880void noinline 2563void noinline
1881ev_timer_stop (EV_P_ ev_timer *w) 2564ev_timer_stop (EV_P_ ev_timer *w)
1882{ 2565{
1883 clear_pending (EV_A_ (W)w); 2566 clear_pending (EV_A_ (W)w);
1884 if (expect_false (!ev_is_active (w))) 2567 if (expect_false (!ev_is_active (w)))
1885 return; 2568 return;
1886 2569
1887 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w)); 2570 EV_FREQUENT_CHECK;
1888 2571
1889 { 2572 {
1890 int active = ((W)w)->active; 2573 int active = ev_active (w);
1891 2574
2575 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2576
2577 --timercnt;
2578
1892 if (expect_true (--active < --timercnt)) 2579 if (expect_true (active < timercnt + HEAP0))
1893 { 2580 {
1894 timers [active] = timers [timercnt]; 2581 timers [active] = timers [timercnt + HEAP0];
1895 adjustheap (timers, timercnt, active); 2582 adjustheap (timers, timercnt, active);
1896 } 2583 }
1897 } 2584 }
1898 2585
1899 ((WT)w)->at -= mn_now; 2586 EV_FREQUENT_CHECK;
2587
2588 ev_at (w) -= mn_now;
1900 2589
1901 ev_stop (EV_A_ (W)w); 2590 ev_stop (EV_A_ (W)w);
1902} 2591}
1903 2592
1904void noinline 2593void noinline
1905ev_timer_again (EV_P_ ev_timer *w) 2594ev_timer_again (EV_P_ ev_timer *w)
1906{ 2595{
2596 EV_FREQUENT_CHECK;
2597
1907 if (ev_is_active (w)) 2598 if (ev_is_active (w))
1908 { 2599 {
1909 if (w->repeat) 2600 if (w->repeat)
1910 { 2601 {
1911 ((WT)w)->at = mn_now + w->repeat; 2602 ev_at (w) = mn_now + w->repeat;
2603 ANHE_at_cache (timers [ev_active (w)]);
1912 adjustheap (timers, timercnt, ((W)w)->active - 1); 2604 adjustheap (timers, timercnt, ev_active (w));
1913 } 2605 }
1914 else 2606 else
1915 ev_timer_stop (EV_A_ w); 2607 ev_timer_stop (EV_A_ w);
1916 } 2608 }
1917 else if (w->repeat) 2609 else if (w->repeat)
1918 { 2610 {
1919 w->at = w->repeat; 2611 ev_at (w) = w->repeat;
1920 ev_timer_start (EV_A_ w); 2612 ev_timer_start (EV_A_ w);
1921 } 2613 }
2614
2615 EV_FREQUENT_CHECK;
2616}
2617
2618ev_tstamp
2619ev_timer_remaining (EV_P_ ev_timer *w)
2620{
2621 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1922} 2622}
1923 2623
1924#if EV_PERIODIC_ENABLE 2624#if EV_PERIODIC_ENABLE
1925void noinline 2625void noinline
1926ev_periodic_start (EV_P_ ev_periodic *w) 2626ev_periodic_start (EV_P_ ev_periodic *w)
1927{ 2627{
1928 if (expect_false (ev_is_active (w))) 2628 if (expect_false (ev_is_active (w)))
1929 return; 2629 return;
1930 2630
1931 if (w->reschedule_cb) 2631 if (w->reschedule_cb)
1932 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2632 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1933 else if (w->interval) 2633 else if (w->interval)
1934 { 2634 {
1935 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2635 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1936 /* this formula differs from the one in periodic_reify because we do not always round up */ 2636 /* this formula differs from the one in periodic_reify because we do not always round up */
1937 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2637 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1938 } 2638 }
1939 else 2639 else
1940 ((WT)w)->at = w->offset; 2640 ev_at (w) = w->offset;
1941 2641
2642 EV_FREQUENT_CHECK;
2643
2644 ++periodiccnt;
1942 ev_start (EV_A_ (W)w, ++periodiccnt); 2645 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1943 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2); 2646 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1944 periodics [periodiccnt - 1] = (WT)w; 2647 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1945 upheap (periodics, periodiccnt - 1); 2648 ANHE_at_cache (periodics [ev_active (w)]);
2649 upheap (periodics, ev_active (w));
1946 2650
2651 EV_FREQUENT_CHECK;
2652
1947 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ 2653 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1948} 2654}
1949 2655
1950void noinline 2656void noinline
1951ev_periodic_stop (EV_P_ ev_periodic *w) 2657ev_periodic_stop (EV_P_ ev_periodic *w)
1952{ 2658{
1953 clear_pending (EV_A_ (W)w); 2659 clear_pending (EV_A_ (W)w);
1954 if (expect_false (!ev_is_active (w))) 2660 if (expect_false (!ev_is_active (w)))
1955 return; 2661 return;
1956 2662
1957 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w)); 2663 EV_FREQUENT_CHECK;
1958 2664
1959 { 2665 {
1960 int active = ((W)w)->active; 2666 int active = ev_active (w);
1961 2667
2668 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2669
2670 --periodiccnt;
2671
1962 if (expect_true (--active < --periodiccnt)) 2672 if (expect_true (active < periodiccnt + HEAP0))
1963 { 2673 {
1964 periodics [active] = periodics [periodiccnt]; 2674 periodics [active] = periodics [periodiccnt + HEAP0];
1965 adjustheap (periodics, periodiccnt, active); 2675 adjustheap (periodics, periodiccnt, active);
1966 } 2676 }
1967 } 2677 }
1968 2678
2679 EV_FREQUENT_CHECK;
2680
1969 ev_stop (EV_A_ (W)w); 2681 ev_stop (EV_A_ (W)w);
1970} 2682}
1971 2683
1972void noinline 2684void noinline
1973ev_periodic_again (EV_P_ ev_periodic *w) 2685ev_periodic_again (EV_P_ ev_periodic *w)
… …
1983#endif 2695#endif
1984 2696
1985void noinline 2697void noinline
1986ev_signal_start (EV_P_ ev_signal *w) 2698ev_signal_start (EV_P_ ev_signal *w)
1987{ 2699{
1988#if EV_MULTIPLICITY
1989 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1990#endif
1991 if (expect_false (ev_is_active (w))) 2700 if (expect_false (ev_is_active (w)))
1992 return; 2701 return;
1993 2702
1994 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2703 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
1995 2704
1996 evpipe_init (EV_A); 2705#if EV_MULTIPLICITY
2706 assert (("libev: a signal must not be attached to two different loops",
2707 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
1997 2708
2709 signals [w->signum - 1].loop = EV_A;
2710#endif
2711
2712 EV_FREQUENT_CHECK;
2713
2714#if EV_USE_SIGNALFD
2715 if (sigfd == -2)
1998 { 2716 {
1999#ifndef _WIN32 2717 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2000 sigset_t full, prev; 2718 if (sigfd < 0 && errno == EINVAL)
2001 sigfillset (&full); 2719 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2002 sigprocmask (SIG_SETMASK, &full, &prev);
2003#endif
2004 2720
2005 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2721 if (sigfd >= 0)
2722 {
2723 fd_intern (sigfd); /* doing it twice will not hurt */
2006 2724
2007#ifndef _WIN32 2725 sigemptyset (&sigfd_set);
2008 sigprocmask (SIG_SETMASK, &prev, 0); 2726
2009#endif 2727 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2728 ev_set_priority (&sigfd_w, EV_MAXPRI);
2729 ev_io_start (EV_A_ &sigfd_w);
2730 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2731 }
2010 } 2732 }
2733
2734 if (sigfd >= 0)
2735 {
2736 /* TODO: check .head */
2737 sigaddset (&sigfd_set, w->signum);
2738 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2739
2740 signalfd (sigfd, &sigfd_set, 0);
2741 }
2742#endif
2011 2743
2012 ev_start (EV_A_ (W)w, 1); 2744 ev_start (EV_A_ (W)w, 1);
2013 wlist_add (&signals [w->signum - 1].head, (WL)w); 2745 wlist_add (&signals [w->signum - 1].head, (WL)w);
2014 2746
2015 if (!((WL)w)->next) 2747 if (!((WL)w)->next)
2748# if EV_USE_SIGNALFD
2749 if (sigfd < 0) /*TODO*/
2750# endif
2016 { 2751 {
2017#if _WIN32 2752# if _WIN32
2753 evpipe_init (EV_A);
2754
2018 signal (w->signum, ev_sighandler); 2755 signal (w->signum, ev_sighandler);
2019#else 2756# else
2020 struct sigaction sa; 2757 struct sigaction sa;
2758
2759 evpipe_init (EV_A);
2760
2021 sa.sa_handler = ev_sighandler; 2761 sa.sa_handler = ev_sighandler;
2022 sigfillset (&sa.sa_mask); 2762 sigfillset (&sa.sa_mask);
2023 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2763 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2024 sigaction (w->signum, &sa, 0); 2764 sigaction (w->signum, &sa, 0);
2765
2766 sigemptyset (&sa.sa_mask);
2767 sigaddset (&sa.sa_mask, w->signum);
2768 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2025#endif 2769#endif
2026 } 2770 }
2771
2772 EV_FREQUENT_CHECK;
2027} 2773}
2028 2774
2029void noinline 2775void noinline
2030ev_signal_stop (EV_P_ ev_signal *w) 2776ev_signal_stop (EV_P_ ev_signal *w)
2031{ 2777{
2032 clear_pending (EV_A_ (W)w); 2778 clear_pending (EV_A_ (W)w);
2033 if (expect_false (!ev_is_active (w))) 2779 if (expect_false (!ev_is_active (w)))
2034 return; 2780 return;
2035 2781
2782 EV_FREQUENT_CHECK;
2783
2036 wlist_del (&signals [w->signum - 1].head, (WL)w); 2784 wlist_del (&signals [w->signum - 1].head, (WL)w);
2037 ev_stop (EV_A_ (W)w); 2785 ev_stop (EV_A_ (W)w);
2038 2786
2039 if (!signals [w->signum - 1].head) 2787 if (!signals [w->signum - 1].head)
2788 {
2789#if EV_MULTIPLICITY
2790 signals [w->signum - 1].loop = 0; /* unattach from signal */
2791#endif
2792#if EV_USE_SIGNALFD
2793 if (sigfd >= 0)
2794 {
2795 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D
2796 sigdelset (&sigfd_set, w->signum);
2797 signalfd (sigfd, &sigfd_set, 0);
2798 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D
2799 /*TODO: maybe unblock signal? */
2800 }
2801 else
2802#endif
2040 signal (w->signum, SIG_DFL); 2803 signal (w->signum, SIG_DFL);
2804 }
2805
2806 EV_FREQUENT_CHECK;
2041} 2807}
2042 2808
2043void 2809void
2044ev_child_start (EV_P_ ev_child *w) 2810ev_child_start (EV_P_ ev_child *w)
2045{ 2811{
2046#if EV_MULTIPLICITY 2812#if EV_MULTIPLICITY
2047 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2813 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2048#endif 2814#endif
2049 if (expect_false (ev_is_active (w))) 2815 if (expect_false (ev_is_active (w)))
2050 return; 2816 return;
2051 2817
2818 EV_FREQUENT_CHECK;
2819
2052 ev_start (EV_A_ (W)w, 1); 2820 ev_start (EV_A_ (W)w, 1);
2053 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2821 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2822
2823 EV_FREQUENT_CHECK;
2054} 2824}
2055 2825
2056void 2826void
2057ev_child_stop (EV_P_ ev_child *w) 2827ev_child_stop (EV_P_ ev_child *w)
2058{ 2828{
2059 clear_pending (EV_A_ (W)w); 2829 clear_pending (EV_A_ (W)w);
2060 if (expect_false (!ev_is_active (w))) 2830 if (expect_false (!ev_is_active (w)))
2061 return; 2831 return;
2062 2832
2833 EV_FREQUENT_CHECK;
2834
2063 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2835 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2064 ev_stop (EV_A_ (W)w); 2836 ev_stop (EV_A_ (W)w);
2837
2838 EV_FREQUENT_CHECK;
2065} 2839}
2066 2840
2067#if EV_STAT_ENABLE 2841#if EV_STAT_ENABLE
2068 2842
2069# ifdef _WIN32 2843# ifdef _WIN32
2070# undef lstat 2844# undef lstat
2071# define lstat(a,b) _stati64 (a,b) 2845# define lstat(a,b) _stati64 (a,b)
2072# endif 2846# endif
2073 2847
2074#define DEF_STAT_INTERVAL 5.0074891 2848#define DEF_STAT_INTERVAL 5.0074891
2849#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2075#define MIN_STAT_INTERVAL 0.1074891 2850#define MIN_STAT_INTERVAL 0.1074891
2076 2851
2077static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2852static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2078 2853
2079#if EV_USE_INOTIFY 2854#if EV_USE_INOTIFY
2080# define EV_INOTIFY_BUFSIZE 8192 2855# define EV_INOTIFY_BUFSIZE 8192
… …
2082static void noinline 2857static void noinline
2083infy_add (EV_P_ ev_stat *w) 2858infy_add (EV_P_ ev_stat *w)
2084{ 2859{
2085 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); 2860 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);
2086 2861
2087 if (w->wd < 0) 2862 if (w->wd >= 0)
2863 {
2864 struct statfs sfs;
2865
2866 /* now local changes will be tracked by inotify, but remote changes won't */
2867 /* unless the filesystem is known to be local, we therefore still poll */
2868 /* also do poll on <2.6.25, but with normal frequency */
2869
2870 if (!fs_2625)
2871 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2872 else if (!statfs (w->path, &sfs)
2873 && (sfs.f_type == 0x1373 /* devfs */
2874 || sfs.f_type == 0xEF53 /* ext2/3 */
2875 || sfs.f_type == 0x3153464a /* jfs */
2876 || sfs.f_type == 0x52654973 /* reiser3 */
2877 || sfs.f_type == 0x01021994 /* tempfs */
2878 || sfs.f_type == 0x58465342 /* xfs */))
2879 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2880 else
2881 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2088 { 2882 }
2089 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2883 else
2884 {
2885 /* can't use inotify, continue to stat */
2886 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2090 2887
2091 /* monitor some parent directory for speedup hints */ 2888 /* if path is not there, monitor some parent directory for speedup hints */
2889 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2890 /* but an efficiency issue only */
2092 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2891 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2093 { 2892 {
2094 char path [4096]; 2893 char path [4096];
2095 strcpy (path, w->path); 2894 strcpy (path, w->path);
2096 2895
… …
2099 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2898 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2100 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2899 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2101 2900
2102 char *pend = strrchr (path, '/'); 2901 char *pend = strrchr (path, '/');
2103 2902
2104 if (!pend) 2903 if (!pend || pend == path)
2105 break; /* whoops, no '/', complain to your admin */ 2904 break;
2106 2905
2107 *pend = 0; 2906 *pend = 0;
2108 w->wd = inotify_add_watch (fs_fd, path, mask); 2907 w->wd = inotify_add_watch (fs_fd, path, mask);
2109 } 2908 }
2110 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2909 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2111 } 2910 }
2112 } 2911 }
2113 else
2114 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2115 2912
2116 if (w->wd >= 0) 2913 if (w->wd >= 0)
2117 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2914 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2915
2916 /* now re-arm timer, if required */
2917 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2918 ev_timer_again (EV_A_ &w->timer);
2919 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2118} 2920}
2119 2921
2120static void noinline 2922static void noinline
2121infy_del (EV_P_ ev_stat *w) 2923infy_del (EV_P_ ev_stat *w)
2122{ 2924{
… …
2136 2938
2137static void noinline 2939static void noinline
2138infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2940infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2139{ 2941{
2140 if (slot < 0) 2942 if (slot < 0)
2141 /* overflow, need to check for all hahs slots */ 2943 /* overflow, need to check for all hash slots */
2142 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2944 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2143 infy_wd (EV_A_ slot, wd, ev); 2945 infy_wd (EV_A_ slot, wd, ev);
2144 else 2946 else
2145 { 2947 {
2146 WL w_; 2948 WL w_;
… …
2152 2954
2153 if (w->wd == wd || wd == -1) 2955 if (w->wd == wd || wd == -1)
2154 { 2956 {
2155 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2957 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2156 { 2958 {
2959 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2157 w->wd = -1; 2960 w->wd = -1;
2158 infy_add (EV_A_ w); /* re-add, no matter what */ 2961 infy_add (EV_A_ w); /* re-add, no matter what */
2159 } 2962 }
2160 2963
2161 stat_timer_cb (EV_A_ &w->timer, 0); 2964 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2174 2977
2175 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 2978 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2176 infy_wd (EV_A_ ev->wd, ev->wd, ev); 2979 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2177} 2980}
2178 2981
2179void inline_size 2982inline_size void
2983check_2625 (EV_P)
2984{
2985 /* kernels < 2.6.25 are borked
2986 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2987 */
2988 struct utsname buf;
2989 int major, minor, micro;
2990
2991 if (uname (&buf))
2992 return;
2993
2994 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2995 return;
2996
2997 if (major < 2
2998 || (major == 2 && minor < 6)
2999 || (major == 2 && minor == 6 && micro < 25))
3000 return;
3001
3002 fs_2625 = 1;
3003}
3004
3005inline_size int
3006infy_newfd (void)
3007{
3008#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3009 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3010 if (fd >= 0)
3011 return fd;
3012#endif
3013 return inotify_init ();
3014}
3015
3016inline_size void
2180infy_init (EV_P) 3017infy_init (EV_P)
2181{ 3018{
2182 if (fs_fd != -2) 3019 if (fs_fd != -2)
2183 return; 3020 return;
2184 3021
3022 fs_fd = -1;
3023
3024 check_2625 (EV_A);
3025
2185 fs_fd = inotify_init (); 3026 fs_fd = infy_newfd ();
2186 3027
2187 if (fs_fd >= 0) 3028 if (fs_fd >= 0)
2188 { 3029 {
3030 fd_intern (fs_fd);
2189 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3031 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2190 ev_set_priority (&fs_w, EV_MAXPRI); 3032 ev_set_priority (&fs_w, EV_MAXPRI);
2191 ev_io_start (EV_A_ &fs_w); 3033 ev_io_start (EV_A_ &fs_w);
3034 ev_unref (EV_A);
2192 } 3035 }
2193} 3036}
2194 3037
2195void inline_size 3038inline_size void
2196infy_fork (EV_P) 3039infy_fork (EV_P)
2197{ 3040{
2198 int slot; 3041 int slot;
2199 3042
2200 if (fs_fd < 0) 3043 if (fs_fd < 0)
2201 return; 3044 return;
2202 3045
3046 ev_ref (EV_A);
3047 ev_io_stop (EV_A_ &fs_w);
2203 close (fs_fd); 3048 close (fs_fd);
2204 fs_fd = inotify_init (); 3049 fs_fd = infy_newfd ();
3050
3051 if (fs_fd >= 0)
3052 {
3053 fd_intern (fs_fd);
3054 ev_io_set (&fs_w, fs_fd, EV_READ);
3055 ev_io_start (EV_A_ &fs_w);
3056 ev_unref (EV_A);
3057 }
2205 3058
2206 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3059 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2207 { 3060 {
2208 WL w_ = fs_hash [slot].head; 3061 WL w_ = fs_hash [slot].head;
2209 fs_hash [slot].head = 0; 3062 fs_hash [slot].head = 0;
… …
2216 w->wd = -1; 3069 w->wd = -1;
2217 3070
2218 if (fs_fd >= 0) 3071 if (fs_fd >= 0)
2219 infy_add (EV_A_ w); /* re-add, no matter what */ 3072 infy_add (EV_A_ w); /* re-add, no matter what */
2220 else 3073 else
3074 {
3075 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3076 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2221 ev_timer_start (EV_A_ &w->timer); 3077 ev_timer_again (EV_A_ &w->timer);
3078 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3079 }
2222 } 3080 }
2223
2224 } 3081 }
2225} 3082}
2226 3083
3084#endif
3085
3086#ifdef _WIN32
3087# define EV_LSTAT(p,b) _stati64 (p, b)
3088#else
3089# define EV_LSTAT(p,b) lstat (p, b)
2227#endif 3090#endif
2228 3091
2229void 3092void
2230ev_stat_stat (EV_P_ ev_stat *w) 3093ev_stat_stat (EV_P_ ev_stat *w)
2231{ 3094{
… …
2238static void noinline 3101static void noinline
2239stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3102stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2240{ 3103{
2241 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3104 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2242 3105
2243 /* we copy this here each the time so that */ 3106 ev_statdata prev = w->attr;
2244 /* prev has the old value when the callback gets invoked */
2245 w->prev = w->attr;
2246 ev_stat_stat (EV_A_ w); 3107 ev_stat_stat (EV_A_ w);
2247 3108
2248 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3109 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2249 if ( 3110 if (
2250 w->prev.st_dev != w->attr.st_dev 3111 prev.st_dev != w->attr.st_dev
2251 || w->prev.st_ino != w->attr.st_ino 3112 || prev.st_ino != w->attr.st_ino
2252 || w->prev.st_mode != w->attr.st_mode 3113 || prev.st_mode != w->attr.st_mode
2253 || w->prev.st_nlink != w->attr.st_nlink 3114 || prev.st_nlink != w->attr.st_nlink
2254 || w->prev.st_uid != w->attr.st_uid 3115 || prev.st_uid != w->attr.st_uid
2255 || w->prev.st_gid != w->attr.st_gid 3116 || prev.st_gid != w->attr.st_gid
2256 || w->prev.st_rdev != w->attr.st_rdev 3117 || prev.st_rdev != w->attr.st_rdev
2257 || w->prev.st_size != w->attr.st_size 3118 || prev.st_size != w->attr.st_size
2258 || w->prev.st_atime != w->attr.st_atime 3119 || prev.st_atime != w->attr.st_atime
2259 || w->prev.st_mtime != w->attr.st_mtime 3120 || prev.st_mtime != w->attr.st_mtime
2260 || w->prev.st_ctime != w->attr.st_ctime 3121 || prev.st_ctime != w->attr.st_ctime
2261 ) { 3122 ) {
3123 /* we only update w->prev on actual differences */
3124 /* in case we test more often than invoke the callback, */
3125 /* to ensure that prev is always different to attr */
3126 w->prev = prev;
3127
2262 #if EV_USE_INOTIFY 3128 #if EV_USE_INOTIFY
3129 if (fs_fd >= 0)
3130 {
2263 infy_del (EV_A_ w); 3131 infy_del (EV_A_ w);
2264 infy_add (EV_A_ w); 3132 infy_add (EV_A_ w);
2265 ev_stat_stat (EV_A_ w); /* avoid race... */ 3133 ev_stat_stat (EV_A_ w); /* avoid race... */
3134 }
2266 #endif 3135 #endif
2267 3136
2268 ev_feed_event (EV_A_ w, EV_STAT); 3137 ev_feed_event (EV_A_ w, EV_STAT);
2269 } 3138 }
2270} 3139}
… …
2273ev_stat_start (EV_P_ ev_stat *w) 3142ev_stat_start (EV_P_ ev_stat *w)
2274{ 3143{
2275 if (expect_false (ev_is_active (w))) 3144 if (expect_false (ev_is_active (w)))
2276 return; 3145 return;
2277 3146
2278 /* since we use memcmp, we need to clear any padding data etc. */
2279 memset (&w->prev, 0, sizeof (ev_statdata));
2280 memset (&w->attr, 0, sizeof (ev_statdata));
2281
2282 ev_stat_stat (EV_A_ w); 3147 ev_stat_stat (EV_A_ w);
2283 3148
3149 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2284 if (w->interval < MIN_STAT_INTERVAL) 3150 w->interval = MIN_STAT_INTERVAL;
2285 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2286 3151
2287 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3152 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2288 ev_set_priority (&w->timer, ev_priority (w)); 3153 ev_set_priority (&w->timer, ev_priority (w));
2289 3154
2290#if EV_USE_INOTIFY 3155#if EV_USE_INOTIFY
2291 infy_init (EV_A); 3156 infy_init (EV_A);
2292 3157
2293 if (fs_fd >= 0) 3158 if (fs_fd >= 0)
2294 infy_add (EV_A_ w); 3159 infy_add (EV_A_ w);
2295 else 3160 else
2296#endif 3161#endif
3162 {
2297 ev_timer_start (EV_A_ &w->timer); 3163 ev_timer_again (EV_A_ &w->timer);
3164 ev_unref (EV_A);
3165 }
2298 3166
2299 ev_start (EV_A_ (W)w, 1); 3167 ev_start (EV_A_ (W)w, 1);
3168
3169 EV_FREQUENT_CHECK;
2300} 3170}
2301 3171
2302void 3172void
2303ev_stat_stop (EV_P_ ev_stat *w) 3173ev_stat_stop (EV_P_ ev_stat *w)
2304{ 3174{
2305 clear_pending (EV_A_ (W)w); 3175 clear_pending (EV_A_ (W)w);
2306 if (expect_false (!ev_is_active (w))) 3176 if (expect_false (!ev_is_active (w)))
2307 return; 3177 return;
2308 3178
3179 EV_FREQUENT_CHECK;
3180
2309#if EV_USE_INOTIFY 3181#if EV_USE_INOTIFY
2310 infy_del (EV_A_ w); 3182 infy_del (EV_A_ w);
2311#endif 3183#endif
3184
3185 if (ev_is_active (&w->timer))
3186 {
3187 ev_ref (EV_A);
2312 ev_timer_stop (EV_A_ &w->timer); 3188 ev_timer_stop (EV_A_ &w->timer);
3189 }
2313 3190
2314 ev_stop (EV_A_ (W)w); 3191 ev_stop (EV_A_ (W)w);
3192
3193 EV_FREQUENT_CHECK;
2315} 3194}
2316#endif 3195#endif
2317 3196
2318#if EV_IDLE_ENABLE 3197#if EV_IDLE_ENABLE
2319void 3198void
… …
2321{ 3200{
2322 if (expect_false (ev_is_active (w))) 3201 if (expect_false (ev_is_active (w)))
2323 return; 3202 return;
2324 3203
2325 pri_adjust (EV_A_ (W)w); 3204 pri_adjust (EV_A_ (W)w);
3205
3206 EV_FREQUENT_CHECK;
2326 3207
2327 { 3208 {
2328 int active = ++idlecnt [ABSPRI (w)]; 3209 int active = ++idlecnt [ABSPRI (w)];
2329 3210
2330 ++idleall; 3211 ++idleall;
2331 ev_start (EV_A_ (W)w, active); 3212 ev_start (EV_A_ (W)w, active);
2332 3213
2333 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 3214 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2334 idles [ABSPRI (w)][active - 1] = w; 3215 idles [ABSPRI (w)][active - 1] = w;
2335 } 3216 }
3217
3218 EV_FREQUENT_CHECK;
2336} 3219}
2337 3220
2338void 3221void
2339ev_idle_stop (EV_P_ ev_idle *w) 3222ev_idle_stop (EV_P_ ev_idle *w)
2340{ 3223{
2341 clear_pending (EV_A_ (W)w); 3224 clear_pending (EV_A_ (W)w);
2342 if (expect_false (!ev_is_active (w))) 3225 if (expect_false (!ev_is_active (w)))
2343 return; 3226 return;
2344 3227
3228 EV_FREQUENT_CHECK;
3229
2345 { 3230 {
2346 int active = ((W)w)->active; 3231 int active = ev_active (w);
2347 3232
2348 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3233 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2349 ((W)idles [ABSPRI (w)][active - 1])->active = active; 3234 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2350 3235
2351 ev_stop (EV_A_ (W)w); 3236 ev_stop (EV_A_ (W)w);
2352 --idleall; 3237 --idleall;
2353 } 3238 }
3239
3240 EV_FREQUENT_CHECK;
2354} 3241}
2355#endif 3242#endif
2356 3243
2357void 3244void
2358ev_prepare_start (EV_P_ ev_prepare *w) 3245ev_prepare_start (EV_P_ ev_prepare *w)
2359{ 3246{
2360 if (expect_false (ev_is_active (w))) 3247 if (expect_false (ev_is_active (w)))
2361 return; 3248 return;
3249
3250 EV_FREQUENT_CHECK;
2362 3251
2363 ev_start (EV_A_ (W)w, ++preparecnt); 3252 ev_start (EV_A_ (W)w, ++preparecnt);
2364 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3253 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2365 prepares [preparecnt - 1] = w; 3254 prepares [preparecnt - 1] = w;
3255
3256 EV_FREQUENT_CHECK;
2366} 3257}
2367 3258
2368void 3259void
2369ev_prepare_stop (EV_P_ ev_prepare *w) 3260ev_prepare_stop (EV_P_ ev_prepare *w)
2370{ 3261{
2371 clear_pending (EV_A_ (W)w); 3262 clear_pending (EV_A_ (W)w);
2372 if (expect_false (!ev_is_active (w))) 3263 if (expect_false (!ev_is_active (w)))
2373 return; 3264 return;
2374 3265
3266 EV_FREQUENT_CHECK;
3267
2375 { 3268 {
2376 int active = ((W)w)->active; 3269 int active = ev_active (w);
3270
2377 prepares [active - 1] = prepares [--preparecnt]; 3271 prepares [active - 1] = prepares [--preparecnt];
2378 ((W)prepares [active - 1])->active = active; 3272 ev_active (prepares [active - 1]) = active;
2379 } 3273 }
2380 3274
2381 ev_stop (EV_A_ (W)w); 3275 ev_stop (EV_A_ (W)w);
3276
3277 EV_FREQUENT_CHECK;
2382} 3278}
2383 3279
2384void 3280void
2385ev_check_start (EV_P_ ev_check *w) 3281ev_check_start (EV_P_ ev_check *w)
2386{ 3282{
2387 if (expect_false (ev_is_active (w))) 3283 if (expect_false (ev_is_active (w)))
2388 return; 3284 return;
3285
3286 EV_FREQUENT_CHECK;
2389 3287
2390 ev_start (EV_A_ (W)w, ++checkcnt); 3288 ev_start (EV_A_ (W)w, ++checkcnt);
2391 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3289 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2392 checks [checkcnt - 1] = w; 3290 checks [checkcnt - 1] = w;
3291
3292 EV_FREQUENT_CHECK;
2393} 3293}
2394 3294
2395void 3295void
2396ev_check_stop (EV_P_ ev_check *w) 3296ev_check_stop (EV_P_ ev_check *w)
2397{ 3297{
2398 clear_pending (EV_A_ (W)w); 3298 clear_pending (EV_A_ (W)w);
2399 if (expect_false (!ev_is_active (w))) 3299 if (expect_false (!ev_is_active (w)))
2400 return; 3300 return;
2401 3301
3302 EV_FREQUENT_CHECK;
3303
2402 { 3304 {
2403 int active = ((W)w)->active; 3305 int active = ev_active (w);
3306
2404 checks [active - 1] = checks [--checkcnt]; 3307 checks [active - 1] = checks [--checkcnt];
2405 ((W)checks [active - 1])->active = active; 3308 ev_active (checks [active - 1]) = active;
2406 } 3309 }
2407 3310
2408 ev_stop (EV_A_ (W)w); 3311 ev_stop (EV_A_ (W)w);
3312
3313 EV_FREQUENT_CHECK;
2409} 3314}
2410 3315
2411#if EV_EMBED_ENABLE 3316#if EV_EMBED_ENABLE
2412void noinline 3317void noinline
2413ev_embed_sweep (EV_P_ ev_embed *w) 3318ev_embed_sweep (EV_P_ ev_embed *w)
… …
2430embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3335embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2431{ 3336{
2432 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3337 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2433 3338
2434 { 3339 {
2435 struct ev_loop *loop = w->other; 3340 EV_P = w->other;
2436 3341
2437 while (fdchangecnt) 3342 while (fdchangecnt)
2438 { 3343 {
2439 fd_reify (EV_A); 3344 fd_reify (EV_A);
2440 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3345 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2441 } 3346 }
2442 } 3347 }
2443} 3348}
2444 3349
3350static void
3351embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3352{
3353 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3354
3355 ev_embed_stop (EV_A_ w);
3356
3357 {
3358 EV_P = w->other;
3359
3360 ev_loop_fork (EV_A);
3361 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3362 }
3363
3364 ev_embed_start (EV_A_ w);
3365}
3366
2445#if 0 3367#if 0
2446static void 3368static void
2447embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3369embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2448{ 3370{
2449 ev_idle_stop (EV_A_ idle); 3371 ev_idle_stop (EV_A_ idle);
… …
2455{ 3377{
2456 if (expect_false (ev_is_active (w))) 3378 if (expect_false (ev_is_active (w)))
2457 return; 3379 return;
2458 3380
2459 { 3381 {
2460 struct ev_loop *loop = w->other; 3382 EV_P = w->other;
2461 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3383 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2462 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3384 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2463 } 3385 }
3386
3387 EV_FREQUENT_CHECK;
2464 3388
2465 ev_set_priority (&w->io, ev_priority (w)); 3389 ev_set_priority (&w->io, ev_priority (w));
2466 ev_io_start (EV_A_ &w->io); 3390 ev_io_start (EV_A_ &w->io);
2467 3391
2468 ev_prepare_init (&w->prepare, embed_prepare_cb); 3392 ev_prepare_init (&w->prepare, embed_prepare_cb);
2469 ev_set_priority (&w->prepare, EV_MINPRI); 3393 ev_set_priority (&w->prepare, EV_MINPRI);
2470 ev_prepare_start (EV_A_ &w->prepare); 3394 ev_prepare_start (EV_A_ &w->prepare);
2471 3395
3396 ev_fork_init (&w->fork, embed_fork_cb);
3397 ev_fork_start (EV_A_ &w->fork);
3398
2472 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3399 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2473 3400
2474 ev_start (EV_A_ (W)w, 1); 3401 ev_start (EV_A_ (W)w, 1);
3402
3403 EV_FREQUENT_CHECK;
2475} 3404}
2476 3405
2477void 3406void
2478ev_embed_stop (EV_P_ ev_embed *w) 3407ev_embed_stop (EV_P_ ev_embed *w)
2479{ 3408{
2480 clear_pending (EV_A_ (W)w); 3409 clear_pending (EV_A_ (W)w);
2481 if (expect_false (!ev_is_active (w))) 3410 if (expect_false (!ev_is_active (w)))
2482 return; 3411 return;
2483 3412
3413 EV_FREQUENT_CHECK;
3414
2484 ev_io_stop (EV_A_ &w->io); 3415 ev_io_stop (EV_A_ &w->io);
2485 ev_prepare_stop (EV_A_ &w->prepare); 3416 ev_prepare_stop (EV_A_ &w->prepare);
3417 ev_fork_stop (EV_A_ &w->fork);
2486 3418
2487 ev_stop (EV_A_ (W)w); 3419 EV_FREQUENT_CHECK;
2488} 3420}
2489#endif 3421#endif
2490 3422
2491#if EV_FORK_ENABLE 3423#if EV_FORK_ENABLE
2492void 3424void
2493ev_fork_start (EV_P_ ev_fork *w) 3425ev_fork_start (EV_P_ ev_fork *w)
2494{ 3426{
2495 if (expect_false (ev_is_active (w))) 3427 if (expect_false (ev_is_active (w)))
2496 return; 3428 return;
3429
3430 EV_FREQUENT_CHECK;
2497 3431
2498 ev_start (EV_A_ (W)w, ++forkcnt); 3432 ev_start (EV_A_ (W)w, ++forkcnt);
2499 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3433 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2500 forks [forkcnt - 1] = w; 3434 forks [forkcnt - 1] = w;
3435
3436 EV_FREQUENT_CHECK;
2501} 3437}
2502 3438
2503void 3439void
2504ev_fork_stop (EV_P_ ev_fork *w) 3440ev_fork_stop (EV_P_ ev_fork *w)
2505{ 3441{
2506 clear_pending (EV_A_ (W)w); 3442 clear_pending (EV_A_ (W)w);
2507 if (expect_false (!ev_is_active (w))) 3443 if (expect_false (!ev_is_active (w)))
2508 return; 3444 return;
2509 3445
3446 EV_FREQUENT_CHECK;
3447
2510 { 3448 {
2511 int active = ((W)w)->active; 3449 int active = ev_active (w);
3450
2512 forks [active - 1] = forks [--forkcnt]; 3451 forks [active - 1] = forks [--forkcnt];
2513 ((W)forks [active - 1])->active = active; 3452 ev_active (forks [active - 1]) = active;
2514 } 3453 }
2515 3454
2516 ev_stop (EV_A_ (W)w); 3455 ev_stop (EV_A_ (W)w);
3456
3457 EV_FREQUENT_CHECK;
2517} 3458}
2518#endif 3459#endif
2519 3460
2520#if EV_ASYNC_ENABLE 3461#if EV_ASYNC_ENABLE
2521void 3462void
… …
2523{ 3464{
2524 if (expect_false (ev_is_active (w))) 3465 if (expect_false (ev_is_active (w)))
2525 return; 3466 return;
2526 3467
2527 evpipe_init (EV_A); 3468 evpipe_init (EV_A);
3469
3470 EV_FREQUENT_CHECK;
2528 3471
2529 ev_start (EV_A_ (W)w, ++asynccnt); 3472 ev_start (EV_A_ (W)w, ++asynccnt);
2530 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 3473 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2531 asyncs [asynccnt - 1] = w; 3474 asyncs [asynccnt - 1] = w;
3475
3476 EV_FREQUENT_CHECK;
2532} 3477}
2533 3478
2534void 3479void
2535ev_async_stop (EV_P_ ev_async *w) 3480ev_async_stop (EV_P_ ev_async *w)
2536{ 3481{
2537 clear_pending (EV_A_ (W)w); 3482 clear_pending (EV_A_ (W)w);
2538 if (expect_false (!ev_is_active (w))) 3483 if (expect_false (!ev_is_active (w)))
2539 return; 3484 return;
2540 3485
3486 EV_FREQUENT_CHECK;
3487
2541 { 3488 {
2542 int active = ((W)w)->active; 3489 int active = ev_active (w);
3490
2543 asyncs [active - 1] = asyncs [--asynccnt]; 3491 asyncs [active - 1] = asyncs [--asynccnt];
2544 ((W)asyncs [active - 1])->active = active; 3492 ev_active (asyncs [active - 1]) = active;
2545 } 3493 }
2546 3494
2547 ev_stop (EV_A_ (W)w); 3495 ev_stop (EV_A_ (W)w);
3496
3497 EV_FREQUENT_CHECK;
2548} 3498}
2549 3499
2550void 3500void
2551ev_async_send (EV_P_ ev_async *w) 3501ev_async_send (EV_P_ ev_async *w)
2552{ 3502{
2553 w->sent = 1; 3503 w->sent = 1;
2554 evpipe_write (EV_A_ &gotasync); 3504 evpipe_write (EV_A_ &async_pending);
2555} 3505}
2556#endif 3506#endif
2557 3507
2558/*****************************************************************************/ 3508/*****************************************************************************/
2559 3509
… …
2569once_cb (EV_P_ struct ev_once *once, int revents) 3519once_cb (EV_P_ struct ev_once *once, int revents)
2570{ 3520{
2571 void (*cb)(int revents, void *arg) = once->cb; 3521 void (*cb)(int revents, void *arg) = once->cb;
2572 void *arg = once->arg; 3522 void *arg = once->arg;
2573 3523
2574 ev_io_stop (EV_A_ &once->io); 3524 ev_io_stop (EV_A_ &once->io);
2575 ev_timer_stop (EV_A_ &once->to); 3525 ev_timer_stop (EV_A_ &once->to);
2576 ev_free (once); 3526 ev_free (once);
2577 3527
2578 cb (revents, arg); 3528 cb (revents, arg);
2579} 3529}
2580 3530
2581static void 3531static void
2582once_cb_io (EV_P_ ev_io *w, int revents) 3532once_cb_io (EV_P_ ev_io *w, int revents)
2583{ 3533{
2584 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3534 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3535
3536 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2585} 3537}
2586 3538
2587static void 3539static void
2588once_cb_to (EV_P_ ev_timer *w, int revents) 3540once_cb_to (EV_P_ ev_timer *w, int revents)
2589{ 3541{
2590 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3542 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3543
3544 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2591} 3545}
2592 3546
2593void 3547void
2594ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3548ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2595{ 3549{
… …
2617 ev_timer_set (&once->to, timeout, 0.); 3571 ev_timer_set (&once->to, timeout, 0.);
2618 ev_timer_start (EV_A_ &once->to); 3572 ev_timer_start (EV_A_ &once->to);
2619 } 3573 }
2620} 3574}
2621 3575
3576/*****************************************************************************/
3577
3578#if EV_WALK_ENABLE
3579void
3580ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3581{
3582 int i, j;
3583 ev_watcher_list *wl, *wn;
3584
3585 if (types & (EV_IO | EV_EMBED))
3586 for (i = 0; i < anfdmax; ++i)
3587 for (wl = anfds [i].head; wl; )
3588 {
3589 wn = wl->next;
3590
3591#if EV_EMBED_ENABLE
3592 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3593 {
3594 if (types & EV_EMBED)
3595 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3596 }
3597 else
3598#endif
3599#if EV_USE_INOTIFY
3600 if (ev_cb ((ev_io *)wl) == infy_cb)
3601 ;
3602 else
3603#endif
3604 if ((ev_io *)wl != &pipe_w)
3605 if (types & EV_IO)
3606 cb (EV_A_ EV_IO, wl);
3607
3608 wl = wn;
3609 }
3610
3611 if (types & (EV_TIMER | EV_STAT))
3612 for (i = timercnt + HEAP0; i-- > HEAP0; )
3613#if EV_STAT_ENABLE
3614 /*TODO: timer is not always active*/
3615 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3616 {
3617 if (types & EV_STAT)
3618 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3619 }
3620 else
3621#endif
3622 if (types & EV_TIMER)
3623 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3624
3625#if EV_PERIODIC_ENABLE
3626 if (types & EV_PERIODIC)
3627 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3628 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3629#endif
3630
3631#if EV_IDLE_ENABLE
3632 if (types & EV_IDLE)
3633 for (j = NUMPRI; i--; )
3634 for (i = idlecnt [j]; i--; )
3635 cb (EV_A_ EV_IDLE, idles [j][i]);
3636#endif
3637
3638#if EV_FORK_ENABLE
3639 if (types & EV_FORK)
3640 for (i = forkcnt; i--; )
3641 if (ev_cb (forks [i]) != embed_fork_cb)
3642 cb (EV_A_ EV_FORK, forks [i]);
3643#endif
3644
3645#if EV_ASYNC_ENABLE
3646 if (types & EV_ASYNC)
3647 for (i = asynccnt; i--; )
3648 cb (EV_A_ EV_ASYNC, asyncs [i]);
3649#endif
3650
3651 if (types & EV_PREPARE)
3652 for (i = preparecnt; i--; )
3653#if EV_EMBED_ENABLE
3654 if (ev_cb (prepares [i]) != embed_prepare_cb)
3655#endif
3656 cb (EV_A_ EV_PREPARE, prepares [i]);
3657
3658 if (types & EV_CHECK)
3659 for (i = checkcnt; i--; )
3660 cb (EV_A_ EV_CHECK, checks [i]);
3661
3662 if (types & EV_SIGNAL)
3663 for (i = 0; i < EV_NSIG - 1; ++i)
3664 for (wl = signals [i].head; wl; )
3665 {
3666 wn = wl->next;
3667 cb (EV_A_ EV_SIGNAL, wl);
3668 wl = wn;
3669 }
3670
3671 if (types & EV_CHILD)
3672 for (i = EV_PID_HASHSIZE; i--; )
3673 for (wl = childs [i]; wl; )
3674 {
3675 wn = wl->next;
3676 cb (EV_A_ EV_CHILD, wl);
3677 wl = wn;
3678 }
3679/* EV_STAT 0x00001000 /* stat data changed */
3680/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3681}
3682#endif
3683
2622#if EV_MULTIPLICITY 3684#if EV_MULTIPLICITY
2623 #include "ev_wrap.h" 3685 #include "ev_wrap.h"
2624#endif 3686#endif
2625 3687
2626#ifdef __cplusplus 3688#ifdef __cplusplus

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