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Comparing libev/ev.c (file contents):
Revision 1.221 by root, Sun Apr 6 12:44:49 2008 UTC vs.
Revision 1.328 by root, Sun Feb 14 19:23:19 2010 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) 2007,2008,2009,2010 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
… …
96# define EV_USE_EPOLL 0 110# define EV_USE_EPOLL 0
97# endif 111# endif
98# endif 112# endif
99 113
100# ifndef EV_USE_KQUEUE 114# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
102# define EV_USE_KQUEUE 1 116# define EV_USE_KQUEUE 1
103# else 117# else
104# define EV_USE_KQUEUE 0 118# define EV_USE_KQUEUE 0
105# endif 119# endif
106# endif 120# 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
141#include <assert.h> 164#include <assert.h>
142#include <errno.h> 165#include <errno.h>
143#include <sys/types.h> 166#include <sys/types.h>
144#include <time.h> 167#include <time.h>
168#include <limits.h>
145 169
146#include <signal.h> 170#include <signal.h>
147 171
148#ifdef EV_H 172#ifdef EV_H
149# include EV_H 173# include EV_H
… …
154#ifndef _WIN32 178#ifndef _WIN32
155# include <sys/time.h> 179# include <sys/time.h>
156# include <sys/wait.h> 180# include <sys/wait.h>
157# include <unistd.h> 181# include <unistd.h>
158#else 182#else
183# include <io.h>
159# define WIN32_LEAN_AND_MEAN 184# define WIN32_LEAN_AND_MEAN
160# include <windows.h> 185# include <windows.h>
161# ifndef EV_SELECT_IS_WINSOCKET 186# ifndef EV_SELECT_IS_WINSOCKET
162# define EV_SELECT_IS_WINSOCKET 1 187# define EV_SELECT_IS_WINSOCKET 1
163# endif 188# endif
164#endif 189#endif
165 190
166/* this block tries to deduce configuration from header-defined symbols and defaults */ 191/* this block tries to deduce configuration from header-defined symbols and defaults */
167 192
193/* try to deduce the maximum number of signals on this platform */
194#if defined (EV_NSIG)
195/* use what's provided */
196#elif defined (NSIG)
197# define EV_NSIG (NSIG)
198#elif defined(_NSIG)
199# define EV_NSIG (_NSIG)
200#elif defined (SIGMAX)
201# define EV_NSIG (SIGMAX+1)
202#elif defined (SIG_MAX)
203# define EV_NSIG (SIG_MAX+1)
204#elif defined (_SIG_MAX)
205# define EV_NSIG (_SIG_MAX+1)
206#elif defined (MAXSIG)
207# define EV_NSIG (MAXSIG+1)
208#elif defined (MAX_SIG)
209# define EV_NSIG (MAX_SIG+1)
210#elif defined (SIGARRAYSIZE)
211# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
212#elif defined (_sys_nsig)
213# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
214#else
215# error "unable to find value for NSIG, please report"
216/* to make it compile regardless, just remove the above line */
217# define EV_NSIG 65
218#endif
219
220#ifndef EV_USE_CLOCK_SYSCALL
221# if __linux && __GLIBC__ >= 2
222# define EV_USE_CLOCK_SYSCALL 1
223# else
224# define EV_USE_CLOCK_SYSCALL 0
225# endif
226#endif
227
168#ifndef EV_USE_MONOTONIC 228#ifndef EV_USE_MONOTONIC
229# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
230# define EV_USE_MONOTONIC 1
231# else
169# define EV_USE_MONOTONIC 0 232# define EV_USE_MONOTONIC 0
233# endif
170#endif 234#endif
171 235
172#ifndef EV_USE_REALTIME 236#ifndef EV_USE_REALTIME
173# define EV_USE_REALTIME 0 237# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174#endif 238#endif
175 239
176#ifndef EV_USE_NANOSLEEP 240#ifndef EV_USE_NANOSLEEP
241# if _POSIX_C_SOURCE >= 199309L
242# define EV_USE_NANOSLEEP 1
243# else
177# define EV_USE_NANOSLEEP 0 244# define EV_USE_NANOSLEEP 0
245# endif
178#endif 246#endif
179 247
180#ifndef EV_USE_SELECT 248#ifndef EV_USE_SELECT
181# define EV_USE_SELECT 1 249# define EV_USE_SELECT 1
182#endif 250#endif
… …
235# else 303# else
236# define EV_USE_EVENTFD 0 304# define EV_USE_EVENTFD 0
237# endif 305# endif
238#endif 306#endif
239 307
308#ifndef EV_USE_SIGNALFD
309# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
310# define EV_USE_SIGNALFD 1
311# else
312# define EV_USE_SIGNALFD 0
313# endif
314#endif
315
316#if 0 /* debugging */
317# define EV_VERIFY 3
318# define EV_USE_4HEAP 1
319# define EV_HEAP_CACHE_AT 1
320#endif
321
322#ifndef EV_VERIFY
323# define EV_VERIFY !EV_MINIMAL
324#endif
325
326#ifndef EV_USE_4HEAP
327# define EV_USE_4HEAP !EV_MINIMAL
328#endif
329
330#ifndef EV_HEAP_CACHE_AT
331# define EV_HEAP_CACHE_AT !EV_MINIMAL
332#endif
333
334/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
335/* which makes programs even slower. might work on other unices, too. */
336#if EV_USE_CLOCK_SYSCALL
337# include <syscall.h>
338# ifdef SYS_clock_gettime
339# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
340# undef EV_USE_MONOTONIC
341# define EV_USE_MONOTONIC 1
342# else
343# undef EV_USE_CLOCK_SYSCALL
344# define EV_USE_CLOCK_SYSCALL 0
345# endif
346#endif
347
240/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 348/* this block fixes any misconfiguration where we know we run into trouble otherwise */
349
350#ifdef _AIX
351/* AIX has a completely broken poll.h header */
352# undef EV_USE_POLL
353# define EV_USE_POLL 0
354#endif
241 355
242#ifndef CLOCK_MONOTONIC 356#ifndef CLOCK_MONOTONIC
243# undef EV_USE_MONOTONIC 357# undef EV_USE_MONOTONIC
244# define EV_USE_MONOTONIC 0 358# define EV_USE_MONOTONIC 0
245#endif 359#endif
… …
259# include <sys/select.h> 373# include <sys/select.h>
260# endif 374# endif
261#endif 375#endif
262 376
263#if EV_USE_INOTIFY 377#if EV_USE_INOTIFY
378# include <sys/utsname.h>
379# include <sys/statfs.h>
264# include <sys/inotify.h> 380# include <sys/inotify.h>
381/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
382# ifndef IN_DONT_FOLLOW
383# undef EV_USE_INOTIFY
384# define EV_USE_INOTIFY 0
385# endif
265#endif 386#endif
266 387
267#if EV_SELECT_IS_WINSOCKET 388#if EV_SELECT_IS_WINSOCKET
268# include <winsock.h> 389# include <winsock.h>
269#endif 390#endif
270 391
271#if EV_USE_EVENTFD 392#if EV_USE_EVENTFD
272/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 393/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
273# include <stdint.h> 394# include <stdint.h>
395# ifndef EFD_NONBLOCK
396# define EFD_NONBLOCK O_NONBLOCK
397# endif
398# ifndef EFD_CLOEXEC
399# ifdef O_CLOEXEC
400# define EFD_CLOEXEC O_CLOEXEC
401# else
402# define EFD_CLOEXEC 02000000
403# endif
404# endif
405# ifdef __cplusplus
406extern "C" {
407# endif
274int eventfd (unsigned int initval, int flags); 408int eventfd (unsigned int initval, int flags);
409# ifdef __cplusplus
410}
275#endif 411# endif
412#endif
413
414#if EV_USE_SIGNALFD
415/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
416# include <stdint.h>
417# ifndef SFD_NONBLOCK
418# define SFD_NONBLOCK O_NONBLOCK
419# endif
420# ifndef SFD_CLOEXEC
421# ifdef O_CLOEXEC
422# define SFD_CLOEXEC O_CLOEXEC
423# else
424# define SFD_CLOEXEC 02000000
425# endif
426# endif
427# ifdef __cplusplus
428extern "C" {
429# endif
430int signalfd (int fd, const sigset_t *mask, int flags);
431
432struct signalfd_siginfo
433{
434 uint32_t ssi_signo;
435 char pad[128 - sizeof (uint32_t)];
436};
437# ifdef __cplusplus
438}
439# endif
440#endif
441
276 442
277/**/ 443/**/
444
445#if EV_VERIFY >= 3
446# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
447#else
448# define EV_FREQUENT_CHECK do { } while (0)
449#endif
278 450
279/* 451/*
280 * This is used to avoid floating point rounding problems. 452 * This is used to avoid floating point rounding problems.
281 * It is added to ev_rt_now when scheduling periodics 453 * It is added to ev_rt_now when scheduling periodics
282 * to ensure progress, time-wise, even when rounding 454 * to ensure progress, time-wise, even when rounding
… …
286 */ 458 */
287#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 459#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
288 460
289#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 461#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
290#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 462#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
291/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
292 463
293#if __GNUC__ >= 4 464#if __GNUC__ >= 4
294# define expect(expr,value) __builtin_expect ((expr),(value)) 465# define expect(expr,value) __builtin_expect ((expr),(value))
295# define noinline __attribute__ ((noinline)) 466# define noinline __attribute__ ((noinline))
296#else 467#else
297# define expect(expr,value) (expr) 468# define expect(expr,value) (expr)
298# define noinline 469# define noinline
299# if __STDC_VERSION__ < 199901L 470# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
300# define inline 471# define inline
301# endif 472# endif
302#endif 473#endif
303 474
304#define expect_false(expr) expect ((expr) != 0, 0) 475#define expect_false(expr) expect ((expr) != 0, 0)
… …
309# define inline_speed static noinline 480# define inline_speed static noinline
310#else 481#else
311# define inline_speed static inline 482# define inline_speed static inline
312#endif 483#endif
313 484
314#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 485#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
486
487#if EV_MINPRI == EV_MAXPRI
488# define ABSPRI(w) (((W)w), 0)
489#else
315#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 490# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
491#endif
316 492
317#define EMPTY /* required for microsofts broken pseudo-c compiler */ 493#define EMPTY /* required for microsofts broken pseudo-c compiler */
318#define EMPTY2(a,b) /* used to suppress some warnings */ 494#define EMPTY2(a,b) /* used to suppress some warnings */
319 495
320typedef ev_watcher *W; 496typedef ev_watcher *W;
321typedef ev_watcher_list *WL; 497typedef ev_watcher_list *WL;
322typedef ev_watcher_time *WT; 498typedef ev_watcher_time *WT;
323 499
324#if EV_USE_MONOTONIC 500#define ev_active(w) ((W)(w))->active
501#define ev_at(w) ((WT)(w))->at
502
503#if EV_USE_REALTIME
325/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 504/* sig_atomic_t is used to avoid per-thread variables or locking but still */
326/* giving it a reasonably high chance of working on typical architetcures */ 505/* giving it a reasonably high chance of working on typical architetcures */
506static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
507#endif
508
509#if EV_USE_MONOTONIC
327static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 510static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
511#endif
512
513#ifndef EV_FD_TO_WIN32_HANDLE
514# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
515#endif
516#ifndef EV_WIN32_HANDLE_TO_FD
517# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
518#endif
519#ifndef EV_WIN32_CLOSE_FD
520# define EV_WIN32_CLOSE_FD(fd) close (fd)
328#endif 521#endif
329 522
330#ifdef _WIN32 523#ifdef _WIN32
331# include "ev_win32.c" 524# include "ev_win32.c"
332#endif 525#endif
… …
340{ 533{
341 syserr_cb = cb; 534 syserr_cb = cb;
342} 535}
343 536
344static void noinline 537static void noinline
345syserr (const char *msg) 538ev_syserr (const char *msg)
346{ 539{
347 if (!msg) 540 if (!msg)
348 msg = "(libev) system error"; 541 msg = "(libev) system error";
349 542
350 if (syserr_cb) 543 if (syserr_cb)
… …
354 perror (msg); 547 perror (msg);
355 abort (); 548 abort ();
356 } 549 }
357} 550}
358 551
552static void *
553ev_realloc_emul (void *ptr, long size)
554{
555 /* some systems, notably openbsd and darwin, fail to properly
556 * implement realloc (x, 0) (as required by both ansi c-98 and
557 * the single unix specification, so work around them here.
558 */
559
560 if (size)
561 return realloc (ptr, size);
562
563 free (ptr);
564 return 0;
565}
566
359static void *(*alloc)(void *ptr, long size); 567static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
360 568
361void 569void
362ev_set_allocator (void *(*cb)(void *ptr, long size)) 570ev_set_allocator (void *(*cb)(void *ptr, long size))
363{ 571{
364 alloc = cb; 572 alloc = cb;
365} 573}
366 574
367inline_speed void * 575inline_speed void *
368ev_realloc (void *ptr, long size) 576ev_realloc (void *ptr, long size)
369{ 577{
370 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 578 ptr = alloc (ptr, size);
371 579
372 if (!ptr && size) 580 if (!ptr && size)
373 { 581 {
374 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 582 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
375 abort (); 583 abort ();
… …
381#define ev_malloc(size) ev_realloc (0, (size)) 589#define ev_malloc(size) ev_realloc (0, (size))
382#define ev_free(ptr) ev_realloc ((ptr), 0) 590#define ev_free(ptr) ev_realloc ((ptr), 0)
383 591
384/*****************************************************************************/ 592/*****************************************************************************/
385 593
594/* set in reify when reification needed */
595#define EV_ANFD_REIFY 1
596
597/* file descriptor info structure */
386typedef struct 598typedef struct
387{ 599{
388 WL head; 600 WL head;
389 unsigned char events; 601 unsigned char events; /* the events watched for */
602 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
603 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
390 unsigned char reify; 604 unsigned char unused;
605#if EV_USE_EPOLL
606 unsigned int egen; /* generation counter to counter epoll bugs */
607#endif
391#if EV_SELECT_IS_WINSOCKET 608#if EV_SELECT_IS_WINSOCKET
392 SOCKET handle; 609 SOCKET handle;
393#endif 610#endif
394} ANFD; 611} ANFD;
395 612
613/* stores the pending event set for a given watcher */
396typedef struct 614typedef struct
397{ 615{
398 W w; 616 W w;
399 int events; 617 int events; /* the pending event set for the given watcher */
400} ANPENDING; 618} ANPENDING;
401 619
402#if EV_USE_INOTIFY 620#if EV_USE_INOTIFY
621/* hash table entry per inotify-id */
403typedef struct 622typedef struct
404{ 623{
405 WL head; 624 WL head;
406} ANFS; 625} ANFS;
626#endif
627
628/* Heap Entry */
629#if EV_HEAP_CACHE_AT
630 /* a heap element */
631 typedef struct {
632 ev_tstamp at;
633 WT w;
634 } ANHE;
635
636 #define ANHE_w(he) (he).w /* access watcher, read-write */
637 #define ANHE_at(he) (he).at /* access cached at, read-only */
638 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
639#else
640 /* a heap element */
641 typedef WT ANHE;
642
643 #define ANHE_w(he) (he)
644 #define ANHE_at(he) (he)->at
645 #define ANHE_at_cache(he)
407#endif 646#endif
408 647
409#if EV_MULTIPLICITY 648#if EV_MULTIPLICITY
410 649
411 struct ev_loop 650 struct ev_loop
… …
430 669
431 static int ev_default_loop_ptr; 670 static int ev_default_loop_ptr;
432 671
433#endif 672#endif
434 673
674#if EV_MINIMAL < 2
675# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
676# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
677# define EV_INVOKE_PENDING invoke_cb (EV_A)
678#else
679# define EV_RELEASE_CB (void)0
680# define EV_ACQUIRE_CB (void)0
681# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
682#endif
683
684#define EVUNLOOP_RECURSE 0x80
685
435/*****************************************************************************/ 686/*****************************************************************************/
436 687
688#ifndef EV_HAVE_EV_TIME
437ev_tstamp 689ev_tstamp
438ev_time (void) 690ev_time (void)
439{ 691{
440#if EV_USE_REALTIME 692#if EV_USE_REALTIME
693 if (expect_true (have_realtime))
694 {
441 struct timespec ts; 695 struct timespec ts;
442 clock_gettime (CLOCK_REALTIME, &ts); 696 clock_gettime (CLOCK_REALTIME, &ts);
443 return ts.tv_sec + ts.tv_nsec * 1e-9; 697 return ts.tv_sec + ts.tv_nsec * 1e-9;
444#else 698 }
699#endif
700
445 struct timeval tv; 701 struct timeval tv;
446 gettimeofday (&tv, 0); 702 gettimeofday (&tv, 0);
447 return tv.tv_sec + tv.tv_usec * 1e-6; 703 return tv.tv_sec + tv.tv_usec * 1e-6;
448#endif
449} 704}
705#endif
450 706
451ev_tstamp inline_size 707inline_size ev_tstamp
452get_clock (void) 708get_clock (void)
453{ 709{
454#if EV_USE_MONOTONIC 710#if EV_USE_MONOTONIC
455 if (expect_true (have_monotonic)) 711 if (expect_true (have_monotonic))
456 { 712 {
… …
489 struct timeval tv; 745 struct timeval tv;
490 746
491 tv.tv_sec = (time_t)delay; 747 tv.tv_sec = (time_t)delay;
492 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 748 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
493 749
750 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
751 /* something not guaranteed by newer posix versions, but guaranteed */
752 /* by older ones */
494 select (0, 0, 0, 0, &tv); 753 select (0, 0, 0, 0, &tv);
495#endif 754#endif
496 } 755 }
497} 756}
498 757
499/*****************************************************************************/ 758/*****************************************************************************/
500 759
501int inline_size 760#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
761
762/* find a suitable new size for the given array, */
763/* hopefully by rounding to a ncie-to-malloc size */
764inline_size int
502array_nextsize (int elem, int cur, int cnt) 765array_nextsize (int elem, int cur, int cnt)
503{ 766{
504 int ncur = cur + 1; 767 int ncur = cur + 1;
505 768
506 do 769 do
507 ncur <<= 1; 770 ncur <<= 1;
508 while (cnt > ncur); 771 while (cnt > ncur);
509 772
510 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ 773 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
511 if (elem * ncur > 4096) 774 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
512 { 775 {
513 ncur *= elem; 776 ncur *= elem;
514 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; 777 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
515 ncur = ncur - sizeof (void *) * 4; 778 ncur = ncur - sizeof (void *) * 4;
516 ncur /= elem; 779 ncur /= elem;
517 } 780 }
518 781
519 return ncur; 782 return ncur;
… …
523array_realloc (int elem, void *base, int *cur, int cnt) 786array_realloc (int elem, void *base, int *cur, int cnt)
524{ 787{
525 *cur = array_nextsize (elem, *cur, cnt); 788 *cur = array_nextsize (elem, *cur, cnt);
526 return ev_realloc (base, elem * *cur); 789 return ev_realloc (base, elem * *cur);
527} 790}
791
792#define array_init_zero(base,count) \
793 memset ((void *)(base), 0, sizeof (*(base)) * (count))
528 794
529#define array_needsize(type,base,cur,cnt,init) \ 795#define array_needsize(type,base,cur,cnt,init) \
530 if (expect_false ((cnt) > (cur))) \ 796 if (expect_false ((cnt) > (cur))) \
531 { \ 797 { \
532 int ocur_ = (cur); \ 798 int ocur_ = (cur); \
… …
544 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 810 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
545 } 811 }
546#endif 812#endif
547 813
548#define array_free(stem, idx) \ 814#define array_free(stem, idx) \
549 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 815 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
550 816
551/*****************************************************************************/ 817/*****************************************************************************/
818
819/* dummy callback for pending events */
820static void noinline
821pendingcb (EV_P_ ev_prepare *w, int revents)
822{
823}
552 824
553void noinline 825void noinline
554ev_feed_event (EV_P_ void *w, int revents) 826ev_feed_event (EV_P_ void *w, int revents)
555{ 827{
556 W w_ = (W)w; 828 W w_ = (W)w;
… …
565 pendings [pri][w_->pending - 1].w = w_; 837 pendings [pri][w_->pending - 1].w = w_;
566 pendings [pri][w_->pending - 1].events = revents; 838 pendings [pri][w_->pending - 1].events = revents;
567 } 839 }
568} 840}
569 841
570void inline_speed 842inline_speed void
843feed_reverse (EV_P_ W w)
844{
845 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
846 rfeeds [rfeedcnt++] = w;
847}
848
849inline_size void
850feed_reverse_done (EV_P_ int revents)
851{
852 do
853 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
854 while (rfeedcnt);
855}
856
857inline_speed void
571queue_events (EV_P_ W *events, int eventcnt, int type) 858queue_events (EV_P_ W *events, int eventcnt, int type)
572{ 859{
573 int i; 860 int i;
574 861
575 for (i = 0; i < eventcnt; ++i) 862 for (i = 0; i < eventcnt; ++i)
576 ev_feed_event (EV_A_ events [i], type); 863 ev_feed_event (EV_A_ events [i], type);
577} 864}
578 865
579/*****************************************************************************/ 866/*****************************************************************************/
580 867
581void inline_size 868inline_speed void
582anfds_init (ANFD *base, int count)
583{
584 while (count--)
585 {
586 base->head = 0;
587 base->events = EV_NONE;
588 base->reify = 0;
589
590 ++base;
591 }
592}
593
594void inline_speed
595fd_event (EV_P_ int fd, int revents) 869fd_event_nc (EV_P_ int fd, int revents)
596{ 870{
597 ANFD *anfd = anfds + fd; 871 ANFD *anfd = anfds + fd;
598 ev_io *w; 872 ev_io *w;
599 873
600 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 874 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
604 if (ev) 878 if (ev)
605 ev_feed_event (EV_A_ (W)w, ev); 879 ev_feed_event (EV_A_ (W)w, ev);
606 } 880 }
607} 881}
608 882
883/* do not submit kernel events for fds that have reify set */
884/* because that means they changed while we were polling for new events */
885inline_speed void
886fd_event (EV_P_ int fd, int revents)
887{
888 ANFD *anfd = anfds + fd;
889
890 if (expect_true (!anfd->reify))
891 fd_event_nc (EV_A_ fd, revents);
892}
893
609void 894void
610ev_feed_fd_event (EV_P_ int fd, int revents) 895ev_feed_fd_event (EV_P_ int fd, int revents)
611{ 896{
612 if (fd >= 0 && fd < anfdmax) 897 if (fd >= 0 && fd < anfdmax)
613 fd_event (EV_A_ fd, revents); 898 fd_event_nc (EV_A_ fd, revents);
614} 899}
615 900
616void inline_size 901/* make sure the external fd watch events are in-sync */
902/* with the kernel/libev internal state */
903inline_size void
617fd_reify (EV_P) 904fd_reify (EV_P)
618{ 905{
619 int i; 906 int i;
620 907
621 for (i = 0; i < fdchangecnt; ++i) 908 for (i = 0; i < fdchangecnt; ++i)
… …
630 events |= (unsigned char)w->events; 917 events |= (unsigned char)w->events;
631 918
632#if EV_SELECT_IS_WINSOCKET 919#if EV_SELECT_IS_WINSOCKET
633 if (events) 920 if (events)
634 { 921 {
635 unsigned long argp; 922 unsigned long arg;
636 #ifdef EV_FD_TO_WIN32_HANDLE
637 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 923 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
638 #else
639 anfd->handle = _get_osfhandle (fd);
640 #endif
641 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 924 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
642 } 925 }
643#endif 926#endif
644 927
645 { 928 {
646 unsigned char o_events = anfd->events; 929 unsigned char o_events = anfd->events;
647 unsigned char o_reify = anfd->reify; 930 unsigned char o_reify = anfd->reify;
648 931
649 anfd->reify = 0; 932 anfd->reify = 0;
650 anfd->events = events; 933 anfd->events = events;
651 934
652 if (o_events != events || o_reify & EV_IOFDSET) 935 if (o_events != events || o_reify & EV__IOFDSET)
653 backend_modify (EV_A_ fd, o_events, events); 936 backend_modify (EV_A_ fd, o_events, events);
654 } 937 }
655 } 938 }
656 939
657 fdchangecnt = 0; 940 fdchangecnt = 0;
658} 941}
659 942
660void inline_size 943/* something about the given fd changed */
944inline_size void
661fd_change (EV_P_ int fd, int flags) 945fd_change (EV_P_ int fd, int flags)
662{ 946{
663 unsigned char reify = anfds [fd].reify; 947 unsigned char reify = anfds [fd].reify;
664 anfds [fd].reify |= flags; 948 anfds [fd].reify |= flags;
665 949
… …
669 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 953 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
670 fdchanges [fdchangecnt - 1] = fd; 954 fdchanges [fdchangecnt - 1] = fd;
671 } 955 }
672} 956}
673 957
674void inline_speed 958/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
959inline_speed void
675fd_kill (EV_P_ int fd) 960fd_kill (EV_P_ int fd)
676{ 961{
677 ev_io *w; 962 ev_io *w;
678 963
679 while ((w = (ev_io *)anfds [fd].head)) 964 while ((w = (ev_io *)anfds [fd].head))
… …
681 ev_io_stop (EV_A_ w); 966 ev_io_stop (EV_A_ w);
682 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 967 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
683 } 968 }
684} 969}
685 970
686int inline_size 971/* check whether the given fd is atcually valid, for error recovery */
972inline_size int
687fd_valid (int fd) 973fd_valid (int fd)
688{ 974{
689#ifdef _WIN32 975#ifdef _WIN32
690 return _get_osfhandle (fd) != -1; 976 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
691#else 977#else
692 return fcntl (fd, F_GETFD) != -1; 978 return fcntl (fd, F_GETFD) != -1;
693#endif 979#endif
694} 980}
695 981
… …
699{ 985{
700 int fd; 986 int fd;
701 987
702 for (fd = 0; fd < anfdmax; ++fd) 988 for (fd = 0; fd < anfdmax; ++fd)
703 if (anfds [fd].events) 989 if (anfds [fd].events)
704 if (!fd_valid (fd) == -1 && errno == EBADF) 990 if (!fd_valid (fd) && errno == EBADF)
705 fd_kill (EV_A_ fd); 991 fd_kill (EV_A_ fd);
706} 992}
707 993
708/* called on ENOMEM in select/poll to kill some fds and retry */ 994/* called on ENOMEM in select/poll to kill some fds and retry */
709static void noinline 995static void noinline
… …
713 999
714 for (fd = anfdmax; fd--; ) 1000 for (fd = anfdmax; fd--; )
715 if (anfds [fd].events) 1001 if (anfds [fd].events)
716 { 1002 {
717 fd_kill (EV_A_ fd); 1003 fd_kill (EV_A_ fd);
718 return; 1004 break;
719 } 1005 }
720} 1006}
721 1007
722/* usually called after fork if backend needs to re-arm all fds from scratch */ 1008/* usually called after fork if backend needs to re-arm all fds from scratch */
723static void noinline 1009static void noinline
… …
727 1013
728 for (fd = 0; fd < anfdmax; ++fd) 1014 for (fd = 0; fd < anfdmax; ++fd)
729 if (anfds [fd].events) 1015 if (anfds [fd].events)
730 { 1016 {
731 anfds [fd].events = 0; 1017 anfds [fd].events = 0;
1018 anfds [fd].emask = 0;
732 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1019 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
733 } 1020 }
734} 1021}
735 1022
736/*****************************************************************************/ 1023/*****************************************************************************/
737 1024
738void inline_speed 1025/*
739upheap (WT *heap, int k) 1026 * the heap functions want a real array index. array index 0 uis guaranteed to not
740{ 1027 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
741 WT w = heap [k]; 1028 * the branching factor of the d-tree.
1029 */
742 1030
743 while (k) 1031/*
744 { 1032 * at the moment we allow libev the luxury of two heaps,
745 int p = (k - 1) >> 1; 1033 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
1034 * which is more cache-efficient.
1035 * the difference is about 5% with 50000+ watchers.
1036 */
1037#if EV_USE_4HEAP
746 1038
747 if (heap [p]->at <= w->at) 1039#define DHEAP 4
1040#define HEAP0 (DHEAP - 1) /* index of first element in heap */
1041#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
1042#define UPHEAP_DONE(p,k) ((p) == (k))
1043
1044/* away from the root */
1045inline_speed void
1046downheap (ANHE *heap, int N, int k)
1047{
1048 ANHE he = heap [k];
1049 ANHE *E = heap + N + HEAP0;
1050
1051 for (;;)
1052 {
1053 ev_tstamp minat;
1054 ANHE *minpos;
1055 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1056
1057 /* find minimum child */
1058 if (expect_true (pos + DHEAP - 1 < E))
1059 {
1060 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1061 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1062 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1063 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1064 }
1065 else if (pos < E)
1066 {
1067 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1068 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1069 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1070 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1071 }
1072 else
748 break; 1073 break;
749 1074
1075 if (ANHE_at (he) <= minat)
1076 break;
1077
1078 heap [k] = *minpos;
1079 ev_active (ANHE_w (*minpos)) = k;
1080
1081 k = minpos - heap;
1082 }
1083
1084 heap [k] = he;
1085 ev_active (ANHE_w (he)) = k;
1086}
1087
1088#else /* 4HEAP */
1089
1090#define HEAP0 1
1091#define HPARENT(k) ((k) >> 1)
1092#define UPHEAP_DONE(p,k) (!(p))
1093
1094/* away from the root */
1095inline_speed void
1096downheap (ANHE *heap, int N, int k)
1097{
1098 ANHE he = heap [k];
1099
1100 for (;;)
1101 {
1102 int c = k << 1;
1103
1104 if (c >= N + HEAP0)
1105 break;
1106
1107 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1108 ? 1 : 0;
1109
1110 if (ANHE_at (he) <= ANHE_at (heap [c]))
1111 break;
1112
1113 heap [k] = heap [c];
1114 ev_active (ANHE_w (heap [k])) = k;
1115
1116 k = c;
1117 }
1118
1119 heap [k] = he;
1120 ev_active (ANHE_w (he)) = k;
1121}
1122#endif
1123
1124/* towards the root */
1125inline_speed void
1126upheap (ANHE *heap, int k)
1127{
1128 ANHE he = heap [k];
1129
1130 for (;;)
1131 {
1132 int p = HPARENT (k);
1133
1134 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1135 break;
1136
750 heap [k] = heap [p]; 1137 heap [k] = heap [p];
751 ((W)heap [k])->active = k + 1; 1138 ev_active (ANHE_w (heap [k])) = k;
752 k = p; 1139 k = p;
753 } 1140 }
754 1141
755 heap [k] = w; 1142 heap [k] = he;
756 ((W)heap [k])->active = k + 1; 1143 ev_active (ANHE_w (he)) = k;
757} 1144}
758 1145
759void inline_speed 1146/* move an element suitably so it is in a correct place */
760downheap (WT *heap, int N, int k) 1147inline_size void
761{
762 WT w = heap [k];
763
764 for (;;)
765 {
766 int c = (k << 1) + 1;
767
768 if (c >= N)
769 break;
770
771 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
772 ? 1 : 0;
773
774 if (w->at <= heap [c]->at)
775 break;
776
777 heap [k] = heap [c];
778 ((W)heap [k])->active = k + 1;
779
780 k = c;
781 }
782
783 heap [k] = w;
784 ((W)heap [k])->active = k + 1;
785}
786
787void inline_size
788adjustheap (WT *heap, int N, int k) 1148adjustheap (ANHE *heap, int N, int k)
789{ 1149{
1150 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
790 upheap (heap, k); 1151 upheap (heap, k);
1152 else
791 downheap (heap, N, k); 1153 downheap (heap, N, k);
1154}
1155
1156/* rebuild the heap: this function is used only once and executed rarely */
1157inline_size void
1158reheap (ANHE *heap, int N)
1159{
1160 int i;
1161
1162 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1163 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1164 for (i = 0; i < N; ++i)
1165 upheap (heap, i + HEAP0);
792} 1166}
793 1167
794/*****************************************************************************/ 1168/*****************************************************************************/
795 1169
1170/* associate signal watchers to a signal signal */
796typedef struct 1171typedef struct
797{ 1172{
1173 EV_ATOMIC_T pending;
1174#if EV_MULTIPLICITY
1175 EV_P;
1176#endif
798 WL head; 1177 WL head;
799 EV_ATOMIC_T gotsig;
800} ANSIG; 1178} ANSIG;
801 1179
802static ANSIG *signals; 1180static ANSIG signals [EV_NSIG - 1];
803static int signalmax;
804
805static EV_ATOMIC_T gotsig;
806
807void inline_size
808signals_init (ANSIG *base, int count)
809{
810 while (count--)
811 {
812 base->head = 0;
813 base->gotsig = 0;
814
815 ++base;
816 }
817}
818 1181
819/*****************************************************************************/ 1182/*****************************************************************************/
820 1183
821void inline_speed 1184/* used to prepare libev internal fd's */
1185/* this is not fork-safe */
1186inline_speed void
822fd_intern (int fd) 1187fd_intern (int fd)
823{ 1188{
824#ifdef _WIN32 1189#ifdef _WIN32
825 int arg = 1; 1190 unsigned long arg = 1;
826 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1191 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
827#else 1192#else
828 fcntl (fd, F_SETFD, FD_CLOEXEC); 1193 fcntl (fd, F_SETFD, FD_CLOEXEC);
829 fcntl (fd, F_SETFL, O_NONBLOCK); 1194 fcntl (fd, F_SETFL, O_NONBLOCK);
830#endif 1195#endif
831} 1196}
832 1197
833static void noinline 1198static void noinline
834evpipe_init (EV_P) 1199evpipe_init (EV_P)
835{ 1200{
836 if (!ev_is_active (&pipeev)) 1201 if (!ev_is_active (&pipe_w))
837 { 1202 {
838#if EV_USE_EVENTFD 1203#if EV_USE_EVENTFD
1204 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1205 if (evfd < 0 && errno == EINVAL)
839 if ((evfd = eventfd (0, 0)) >= 0) 1206 evfd = eventfd (0, 0);
1207
1208 if (evfd >= 0)
840 { 1209 {
841 evpipe [0] = -1; 1210 evpipe [0] = -1;
842 fd_intern (evfd); 1211 fd_intern (evfd); /* doing it twice doesn't hurt */
843 ev_io_set (&pipeev, evfd, EV_READ); 1212 ev_io_set (&pipe_w, evfd, EV_READ);
844 } 1213 }
845 else 1214 else
846#endif 1215#endif
847 { 1216 {
848 while (pipe (evpipe)) 1217 while (pipe (evpipe))
849 syserr ("(libev) error creating signal/async pipe"); 1218 ev_syserr ("(libev) error creating signal/async pipe");
850 1219
851 fd_intern (evpipe [0]); 1220 fd_intern (evpipe [0]);
852 fd_intern (evpipe [1]); 1221 fd_intern (evpipe [1]);
853 ev_io_set (&pipeev, evpipe [0], EV_READ); 1222 ev_io_set (&pipe_w, evpipe [0], EV_READ);
854 } 1223 }
855 1224
856 ev_io_start (EV_A_ &pipeev); 1225 ev_io_start (EV_A_ &pipe_w);
857 ev_unref (EV_A); /* watcher should not keep loop alive */ 1226 ev_unref (EV_A); /* watcher should not keep loop alive */
858 } 1227 }
859} 1228}
860 1229
861void inline_size 1230inline_size void
862evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1231evpipe_write (EV_P_ EV_ATOMIC_T *flag)
863{ 1232{
864 if (!*flag) 1233 if (!*flag)
865 { 1234 {
866 int old_errno = errno; /* save errno because write might clobber it */ 1235 int old_errno = errno; /* save errno because write might clobber it */
… …
879 1248
880 errno = old_errno; 1249 errno = old_errno;
881 } 1250 }
882} 1251}
883 1252
1253/* called whenever the libev signal pipe */
1254/* got some events (signal, async) */
884static void 1255static void
885pipecb (EV_P_ ev_io *iow, int revents) 1256pipecb (EV_P_ ev_io *iow, int revents)
886{ 1257{
1258 int i;
1259
887#if EV_USE_EVENTFD 1260#if EV_USE_EVENTFD
888 if (evfd >= 0) 1261 if (evfd >= 0)
889 { 1262 {
890 uint64_t counter = 1; 1263 uint64_t counter;
891 read (evfd, &counter, sizeof (uint64_t)); 1264 read (evfd, &counter, sizeof (uint64_t));
892 } 1265 }
893 else 1266 else
894#endif 1267#endif
895 { 1268 {
896 char dummy; 1269 char dummy;
897 read (evpipe [0], &dummy, 1); 1270 read (evpipe [0], &dummy, 1);
898 } 1271 }
899 1272
900 if (gotsig && ev_is_default_loop (EV_A)) 1273 if (sig_pending)
901 { 1274 {
902 int signum; 1275 sig_pending = 0;
903 gotsig = 0;
904 1276
905 for (signum = signalmax; signum--; ) 1277 for (i = EV_NSIG - 1; i--; )
906 if (signals [signum].gotsig) 1278 if (expect_false (signals [i].pending))
907 ev_feed_signal_event (EV_A_ signum + 1); 1279 ev_feed_signal_event (EV_A_ i + 1);
908 } 1280 }
909 1281
910#if EV_ASYNC_ENABLE 1282#if EV_ASYNC_ENABLE
911 if (gotasync) 1283 if (async_pending)
912 { 1284 {
913 int i; 1285 async_pending = 0;
914 gotasync = 0;
915 1286
916 for (i = asynccnt; i--; ) 1287 for (i = asynccnt; i--; )
917 if (asyncs [i]->sent) 1288 if (asyncs [i]->sent)
918 { 1289 {
919 asyncs [i]->sent = 0; 1290 asyncs [i]->sent = 0;
… …
927 1298
928static void 1299static void
929ev_sighandler (int signum) 1300ev_sighandler (int signum)
930{ 1301{
931#if EV_MULTIPLICITY 1302#if EV_MULTIPLICITY
932 struct ev_loop *loop = &default_loop_struct; 1303 EV_P = signals [signum - 1].loop;
933#endif 1304#endif
934 1305
935#if _WIN32 1306#ifdef _WIN32
936 signal (signum, ev_sighandler); 1307 signal (signum, ev_sighandler);
937#endif 1308#endif
938 1309
939 signals [signum - 1].gotsig = 1; 1310 signals [signum - 1].pending = 1;
940 evpipe_write (EV_A_ &gotsig); 1311 evpipe_write (EV_A_ &sig_pending);
941} 1312}
942 1313
943void noinline 1314void noinline
944ev_feed_signal_event (EV_P_ int signum) 1315ev_feed_signal_event (EV_P_ int signum)
945{ 1316{
946 WL w; 1317 WL w;
947 1318
1319 if (expect_false (signum <= 0 || signum > EV_NSIG))
1320 return;
1321
1322 --signum;
1323
948#if EV_MULTIPLICITY 1324#if EV_MULTIPLICITY
949 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1325 /* it is permissible to try to feed a signal to the wrong loop */
950#endif 1326 /* or, likely more useful, feeding a signal nobody is waiting for */
951 1327
952 --signum; 1328 if (expect_false (signals [signum].loop != EV_A))
953
954 if (signum < 0 || signum >= signalmax)
955 return; 1329 return;
1330#endif
956 1331
957 signals [signum].gotsig = 0; 1332 signals [signum].pending = 0;
958 1333
959 for (w = signals [signum].head; w; w = w->next) 1334 for (w = signals [signum].head; w; w = w->next)
960 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1335 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
961} 1336}
962 1337
1338#if EV_USE_SIGNALFD
1339static void
1340sigfdcb (EV_P_ ev_io *iow, int revents)
1341{
1342 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1343
1344 for (;;)
1345 {
1346 ssize_t res = read (sigfd, si, sizeof (si));
1347
1348 /* not ISO-C, as res might be -1, but works with SuS */
1349 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1350 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1351
1352 if (res < (ssize_t)sizeof (si))
1353 break;
1354 }
1355}
1356#endif
1357
963/*****************************************************************************/ 1358/*****************************************************************************/
964 1359
965static WL childs [EV_PID_HASHSIZE]; 1360static WL childs [EV_PID_HASHSIZE];
966 1361
967#ifndef _WIN32 1362#ifndef _WIN32
… …
970 1365
971#ifndef WIFCONTINUED 1366#ifndef WIFCONTINUED
972# define WIFCONTINUED(status) 0 1367# define WIFCONTINUED(status) 0
973#endif 1368#endif
974 1369
975void inline_speed 1370/* handle a single child status event */
1371inline_speed void
976child_reap (EV_P_ int chain, int pid, int status) 1372child_reap (EV_P_ int chain, int pid, int status)
977{ 1373{
978 ev_child *w; 1374 ev_child *w;
979 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1375 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
980 1376
… …
993 1389
994#ifndef WCONTINUED 1390#ifndef WCONTINUED
995# define WCONTINUED 0 1391# define WCONTINUED 0
996#endif 1392#endif
997 1393
1394/* called on sigchld etc., calls waitpid */
998static void 1395static void
999childcb (EV_P_ ev_signal *sw, int revents) 1396childcb (EV_P_ ev_signal *sw, int revents)
1000{ 1397{
1001 int pid, status; 1398 int pid, status;
1002 1399
… …
1083 /* kqueue is borked on everything but netbsd apparently */ 1480 /* kqueue is borked on everything but netbsd apparently */
1084 /* it usually doesn't work correctly on anything but sockets and pipes */ 1481 /* it usually doesn't work correctly on anything but sockets and pipes */
1085 flags &= ~EVBACKEND_KQUEUE; 1482 flags &= ~EVBACKEND_KQUEUE;
1086#endif 1483#endif
1087#ifdef __APPLE__ 1484#ifdef __APPLE__
1088 // flags &= ~EVBACKEND_KQUEUE; for documentation 1485 /* only select works correctly on that "unix-certified" platform */
1089 flags &= ~EVBACKEND_POLL; 1486 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1487 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1090#endif 1488#endif
1091 1489
1092 return flags; 1490 return flags;
1093} 1491}
1094 1492
… …
1108ev_backend (EV_P) 1506ev_backend (EV_P)
1109{ 1507{
1110 return backend; 1508 return backend;
1111} 1509}
1112 1510
1511#if EV_MINIMAL < 2
1113unsigned int 1512unsigned int
1114ev_loop_count (EV_P) 1513ev_loop_count (EV_P)
1115{ 1514{
1116 return loop_count; 1515 return loop_count;
1117} 1516}
1118 1517
1518unsigned int
1519ev_loop_depth (EV_P)
1520{
1521 return loop_depth;
1522}
1523
1119void 1524void
1120ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1525ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1121{ 1526{
1122 io_blocktime = interval; 1527 io_blocktime = interval;
1123} 1528}
… …
1126ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1531ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1127{ 1532{
1128 timeout_blocktime = interval; 1533 timeout_blocktime = interval;
1129} 1534}
1130 1535
1536void
1537ev_set_userdata (EV_P_ void *data)
1538{
1539 userdata = data;
1540}
1541
1542void *
1543ev_userdata (EV_P)
1544{
1545 return userdata;
1546}
1547
1548void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1549{
1550 invoke_cb = invoke_pending_cb;
1551}
1552
1553void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1554{
1555 release_cb = release;
1556 acquire_cb = acquire;
1557}
1558#endif
1559
1560/* initialise a loop structure, must be zero-initialised */
1131static void noinline 1561static void noinline
1132loop_init (EV_P_ unsigned int flags) 1562loop_init (EV_P_ unsigned int flags)
1133{ 1563{
1134 if (!backend) 1564 if (!backend)
1135 { 1565 {
1566#if EV_USE_REALTIME
1567 if (!have_realtime)
1568 {
1569 struct timespec ts;
1570
1571 if (!clock_gettime (CLOCK_REALTIME, &ts))
1572 have_realtime = 1;
1573 }
1574#endif
1575
1136#if EV_USE_MONOTONIC 1576#if EV_USE_MONOTONIC
1577 if (!have_monotonic)
1137 { 1578 {
1138 struct timespec ts; 1579 struct timespec ts;
1580
1139 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1581 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1140 have_monotonic = 1; 1582 have_monotonic = 1;
1141 } 1583 }
1142#endif 1584#endif
1585
1586 /* pid check not overridable via env */
1587#ifndef _WIN32
1588 if (flags & EVFLAG_FORKCHECK)
1589 curpid = getpid ();
1590#endif
1591
1592 if (!(flags & EVFLAG_NOENV)
1593 && !enable_secure ()
1594 && getenv ("LIBEV_FLAGS"))
1595 flags = atoi (getenv ("LIBEV_FLAGS"));
1143 1596
1144 ev_rt_now = ev_time (); 1597 ev_rt_now = ev_time ();
1145 mn_now = get_clock (); 1598 mn_now = get_clock ();
1146 now_floor = mn_now; 1599 now_floor = mn_now;
1147 rtmn_diff = ev_rt_now - mn_now; 1600 rtmn_diff = ev_rt_now - mn_now;
1601#if EV_MINIMAL < 2
1602 invoke_cb = ev_invoke_pending;
1603#endif
1148 1604
1149 io_blocktime = 0.; 1605 io_blocktime = 0.;
1150 timeout_blocktime = 0.; 1606 timeout_blocktime = 0.;
1151 backend = 0; 1607 backend = 0;
1152 backend_fd = -1; 1608 backend_fd = -1;
1153 gotasync = 0; 1609 sig_pending = 0;
1610#if EV_ASYNC_ENABLE
1611 async_pending = 0;
1612#endif
1154#if EV_USE_INOTIFY 1613#if EV_USE_INOTIFY
1155 fs_fd = -2; 1614 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1156#endif 1615#endif
1157 1616#if EV_USE_SIGNALFD
1158 /* pid check not overridable via env */ 1617 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1159#ifndef _WIN32
1160 if (flags & EVFLAG_FORKCHECK)
1161 curpid = getpid ();
1162#endif 1618#endif
1163 1619
1164 if (!(flags & EVFLAG_NOENV)
1165 && !enable_secure ()
1166 && getenv ("LIBEV_FLAGS"))
1167 flags = atoi (getenv ("LIBEV_FLAGS"));
1168
1169 if (!(flags & 0x0000ffffUL)) 1620 if (!(flags & 0x0000ffffU))
1170 flags |= ev_recommended_backends (); 1621 flags |= ev_recommended_backends ();
1171 1622
1172#if EV_USE_PORT 1623#if EV_USE_PORT
1173 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1624 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1174#endif 1625#endif
… …
1183#endif 1634#endif
1184#if EV_USE_SELECT 1635#if EV_USE_SELECT
1185 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1636 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1186#endif 1637#endif
1187 1638
1639 ev_prepare_init (&pending_w, pendingcb);
1640
1188 ev_init (&pipeev, pipecb); 1641 ev_init (&pipe_w, pipecb);
1189 ev_set_priority (&pipeev, EV_MAXPRI); 1642 ev_set_priority (&pipe_w, EV_MAXPRI);
1190 } 1643 }
1191} 1644}
1192 1645
1646/* free up a loop structure */
1193static void noinline 1647static void noinline
1194loop_destroy (EV_P) 1648loop_destroy (EV_P)
1195{ 1649{
1196 int i; 1650 int i;
1197 1651
1198 if (ev_is_active (&pipeev)) 1652 if (ev_is_active (&pipe_w))
1199 { 1653 {
1200 ev_ref (EV_A); /* signal watcher */ 1654 /*ev_ref (EV_A);*/
1201 ev_io_stop (EV_A_ &pipeev); 1655 /*ev_io_stop (EV_A_ &pipe_w);*/
1202 1656
1203#if EV_USE_EVENTFD 1657#if EV_USE_EVENTFD
1204 if (evfd >= 0) 1658 if (evfd >= 0)
1205 close (evfd); 1659 close (evfd);
1206#endif 1660#endif
1207 1661
1208 if (evpipe [0] >= 0) 1662 if (evpipe [0] >= 0)
1209 { 1663 {
1210 close (evpipe [0]); 1664 EV_WIN32_CLOSE_FD (evpipe [0]);
1211 close (evpipe [1]); 1665 EV_WIN32_CLOSE_FD (evpipe [1]);
1212 } 1666 }
1213 } 1667 }
1668
1669#if EV_USE_SIGNALFD
1670 if (ev_is_active (&sigfd_w))
1671 close (sigfd);
1672#endif
1214 1673
1215#if EV_USE_INOTIFY 1674#if EV_USE_INOTIFY
1216 if (fs_fd >= 0) 1675 if (fs_fd >= 0)
1217 close (fs_fd); 1676 close (fs_fd);
1218#endif 1677#endif
… …
1242#if EV_IDLE_ENABLE 1701#if EV_IDLE_ENABLE
1243 array_free (idle, [i]); 1702 array_free (idle, [i]);
1244#endif 1703#endif
1245 } 1704 }
1246 1705
1247 ev_free (anfds); anfdmax = 0; 1706 ev_free (anfds); anfds = 0; anfdmax = 0;
1248 1707
1249 /* have to use the microsoft-never-gets-it-right macro */ 1708 /* have to use the microsoft-never-gets-it-right macro */
1709 array_free (rfeed, EMPTY);
1250 array_free (fdchange, EMPTY); 1710 array_free (fdchange, EMPTY);
1251 array_free (timer, EMPTY); 1711 array_free (timer, EMPTY);
1252#if EV_PERIODIC_ENABLE 1712#if EV_PERIODIC_ENABLE
1253 array_free (periodic, EMPTY); 1713 array_free (periodic, EMPTY);
1254#endif 1714#endif
… …
1262#endif 1722#endif
1263 1723
1264 backend = 0; 1724 backend = 0;
1265} 1725}
1266 1726
1727#if EV_USE_INOTIFY
1267void inline_size infy_fork (EV_P); 1728inline_size void infy_fork (EV_P);
1729#endif
1268 1730
1269void inline_size 1731inline_size void
1270loop_fork (EV_P) 1732loop_fork (EV_P)
1271{ 1733{
1272#if EV_USE_PORT 1734#if EV_USE_PORT
1273 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1735 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1274#endif 1736#endif
… …
1280#endif 1742#endif
1281#if EV_USE_INOTIFY 1743#if EV_USE_INOTIFY
1282 infy_fork (EV_A); 1744 infy_fork (EV_A);
1283#endif 1745#endif
1284 1746
1285 if (ev_is_active (&pipeev)) 1747 if (ev_is_active (&pipe_w))
1286 { 1748 {
1287 /* this "locks" the handlers against writing to the pipe */ 1749 /* this "locks" the handlers against writing to the pipe */
1288 /* while we modify the fd vars */ 1750 /* while we modify the fd vars */
1289 gotsig = 1; 1751 sig_pending = 1;
1290#if EV_ASYNC_ENABLE 1752#if EV_ASYNC_ENABLE
1291 gotasync = 1; 1753 async_pending = 1;
1292#endif 1754#endif
1293 1755
1294 ev_ref (EV_A); 1756 ev_ref (EV_A);
1295 ev_io_stop (EV_A_ &pipeev); 1757 ev_io_stop (EV_A_ &pipe_w);
1296 1758
1297#if EV_USE_EVENTFD 1759#if EV_USE_EVENTFD
1298 if (evfd >= 0) 1760 if (evfd >= 0)
1299 close (evfd); 1761 close (evfd);
1300#endif 1762#endif
1301 1763
1302 if (evpipe [0] >= 0) 1764 if (evpipe [0] >= 0)
1303 { 1765 {
1304 close (evpipe [0]); 1766 EV_WIN32_CLOSE_FD (evpipe [0]);
1305 close (evpipe [1]); 1767 EV_WIN32_CLOSE_FD (evpipe [1]);
1306 } 1768 }
1307 1769
1308 evpipe_init (EV_A); 1770 evpipe_init (EV_A);
1309 /* now iterate over everything, in case we missed something */ 1771 /* now iterate over everything, in case we missed something */
1310 pipecb (EV_A_ &pipeev, EV_READ); 1772 pipecb (EV_A_ &pipe_w, EV_READ);
1311 } 1773 }
1312 1774
1313 postfork = 0; 1775 postfork = 0;
1314} 1776}
1315 1777
1316#if EV_MULTIPLICITY 1778#if EV_MULTIPLICITY
1779
1317struct ev_loop * 1780struct ev_loop *
1318ev_loop_new (unsigned int flags) 1781ev_loop_new (unsigned int flags)
1319{ 1782{
1320 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1783 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1321 1784
1322 memset (loop, 0, sizeof (struct ev_loop)); 1785 memset (EV_A, 0, sizeof (struct ev_loop));
1323
1324 loop_init (EV_A_ flags); 1786 loop_init (EV_A_ flags);
1325 1787
1326 if (ev_backend (EV_A)) 1788 if (ev_backend (EV_A))
1327 return loop; 1789 return EV_A;
1328 1790
1329 return 0; 1791 return 0;
1330} 1792}
1331 1793
1332void 1794void
… …
1339void 1801void
1340ev_loop_fork (EV_P) 1802ev_loop_fork (EV_P)
1341{ 1803{
1342 postfork = 1; /* must be in line with ev_default_fork */ 1804 postfork = 1; /* must be in line with ev_default_fork */
1343} 1805}
1806#endif /* multiplicity */
1344 1807
1808#if EV_VERIFY
1809static void noinline
1810verify_watcher (EV_P_ W w)
1811{
1812 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1813
1814 if (w->pending)
1815 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1816}
1817
1818static void noinline
1819verify_heap (EV_P_ ANHE *heap, int N)
1820{
1821 int i;
1822
1823 for (i = HEAP0; i < N + HEAP0; ++i)
1824 {
1825 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1826 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1827 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1828
1829 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1830 }
1831}
1832
1833static void noinline
1834array_verify (EV_P_ W *ws, int cnt)
1835{
1836 while (cnt--)
1837 {
1838 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1839 verify_watcher (EV_A_ ws [cnt]);
1840 }
1841}
1842#endif
1843
1844#if EV_MINIMAL < 2
1845void
1846ev_loop_verify (EV_P)
1847{
1848#if EV_VERIFY
1849 int i;
1850 WL w;
1851
1852 assert (activecnt >= -1);
1853
1854 assert (fdchangemax >= fdchangecnt);
1855 for (i = 0; i < fdchangecnt; ++i)
1856 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1857
1858 assert (anfdmax >= 0);
1859 for (i = 0; i < anfdmax; ++i)
1860 for (w = anfds [i].head; w; w = w->next)
1861 {
1862 verify_watcher (EV_A_ (W)w);
1863 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1864 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1865 }
1866
1867 assert (timermax >= timercnt);
1868 verify_heap (EV_A_ timers, timercnt);
1869
1870#if EV_PERIODIC_ENABLE
1871 assert (periodicmax >= periodiccnt);
1872 verify_heap (EV_A_ periodics, periodiccnt);
1873#endif
1874
1875 for (i = NUMPRI; i--; )
1876 {
1877 assert (pendingmax [i] >= pendingcnt [i]);
1878#if EV_IDLE_ENABLE
1879 assert (idleall >= 0);
1880 assert (idlemax [i] >= idlecnt [i]);
1881 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1882#endif
1883 }
1884
1885#if EV_FORK_ENABLE
1886 assert (forkmax >= forkcnt);
1887 array_verify (EV_A_ (W *)forks, forkcnt);
1888#endif
1889
1890#if EV_ASYNC_ENABLE
1891 assert (asyncmax >= asynccnt);
1892 array_verify (EV_A_ (W *)asyncs, asynccnt);
1893#endif
1894
1895 assert (preparemax >= preparecnt);
1896 array_verify (EV_A_ (W *)prepares, preparecnt);
1897
1898 assert (checkmax >= checkcnt);
1899 array_verify (EV_A_ (W *)checks, checkcnt);
1900
1901# if 0
1902 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1903 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1904# endif
1905#endif
1906}
1345#endif 1907#endif
1346 1908
1347#if EV_MULTIPLICITY 1909#if EV_MULTIPLICITY
1348struct ev_loop * 1910struct ev_loop *
1349ev_default_loop_init (unsigned int flags) 1911ev_default_loop_init (unsigned int flags)
… …
1353#endif 1915#endif
1354{ 1916{
1355 if (!ev_default_loop_ptr) 1917 if (!ev_default_loop_ptr)
1356 { 1918 {
1357#if EV_MULTIPLICITY 1919#if EV_MULTIPLICITY
1358 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1920 EV_P = ev_default_loop_ptr = &default_loop_struct;
1359#else 1921#else
1360 ev_default_loop_ptr = 1; 1922 ev_default_loop_ptr = 1;
1361#endif 1923#endif
1362 1924
1363 loop_init (EV_A_ flags); 1925 loop_init (EV_A_ flags);
… …
1380 1942
1381void 1943void
1382ev_default_destroy (void) 1944ev_default_destroy (void)
1383{ 1945{
1384#if EV_MULTIPLICITY 1946#if EV_MULTIPLICITY
1385 struct ev_loop *loop = ev_default_loop_ptr; 1947 EV_P = ev_default_loop_ptr;
1386#endif 1948#endif
1949
1950 ev_default_loop_ptr = 0;
1387 1951
1388#ifndef _WIN32 1952#ifndef _WIN32
1389 ev_ref (EV_A); /* child watcher */ 1953 ev_ref (EV_A); /* child watcher */
1390 ev_signal_stop (EV_A_ &childev); 1954 ev_signal_stop (EV_A_ &childev);
1391#endif 1955#endif
… …
1395 1959
1396void 1960void
1397ev_default_fork (void) 1961ev_default_fork (void)
1398{ 1962{
1399#if EV_MULTIPLICITY 1963#if EV_MULTIPLICITY
1400 struct ev_loop *loop = ev_default_loop_ptr; 1964 EV_P = ev_default_loop_ptr;
1401#endif 1965#endif
1402 1966
1403 if (backend)
1404 postfork = 1; /* must be in line with ev_loop_fork */ 1967 postfork = 1; /* must be in line with ev_loop_fork */
1405} 1968}
1406 1969
1407/*****************************************************************************/ 1970/*****************************************************************************/
1408 1971
1409void 1972void
1410ev_invoke (EV_P_ void *w, int revents) 1973ev_invoke (EV_P_ void *w, int revents)
1411{ 1974{
1412 EV_CB_INVOKE ((W)w, revents); 1975 EV_CB_INVOKE ((W)w, revents);
1413} 1976}
1414 1977
1415void inline_speed 1978unsigned int
1416call_pending (EV_P) 1979ev_pending_count (EV_P)
1980{
1981 int pri;
1982 unsigned int count = 0;
1983
1984 for (pri = NUMPRI; pri--; )
1985 count += pendingcnt [pri];
1986
1987 return count;
1988}
1989
1990void noinline
1991ev_invoke_pending (EV_P)
1417{ 1992{
1418 int pri; 1993 int pri;
1419 1994
1420 for (pri = NUMPRI; pri--; ) 1995 for (pri = NUMPRI; pri--; )
1421 while (pendingcnt [pri]) 1996 while (pendingcnt [pri])
1422 { 1997 {
1423 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1998 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1424 1999
1425 if (expect_true (p->w))
1426 {
1427 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2000 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2001 /* ^ this is no longer true, as pending_w could be here */
1428 2002
1429 p->w->pending = 0; 2003 p->w->pending = 0;
1430 EV_CB_INVOKE (p->w, p->events); 2004 EV_CB_INVOKE (p->w, p->events);
1431 } 2005 EV_FREQUENT_CHECK;
1432 } 2006 }
1433} 2007}
1434 2008
1435void inline_size
1436timers_reify (EV_P)
1437{
1438 while (timercnt && ((WT)timers [0])->at <= mn_now)
1439 {
1440 ev_timer *w = (ev_timer *)timers [0];
1441
1442 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1443
1444 /* first reschedule or stop timer */
1445 if (w->repeat)
1446 {
1447 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1448
1449 ((WT)w)->at += w->repeat;
1450 if (((WT)w)->at < mn_now)
1451 ((WT)w)->at = mn_now;
1452
1453 downheap (timers, timercnt, 0);
1454 }
1455 else
1456 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1457
1458 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1459 }
1460}
1461
1462#if EV_PERIODIC_ENABLE
1463void inline_size
1464periodics_reify (EV_P)
1465{
1466 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1467 {
1468 ev_periodic *w = (ev_periodic *)periodics [0];
1469
1470 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1471
1472 /* first reschedule or stop timer */
1473 if (w->reschedule_cb)
1474 {
1475 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1476 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1477 downheap (periodics, periodiccnt, 0);
1478 }
1479 else if (w->interval)
1480 {
1481 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1482 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1483 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1484 downheap (periodics, periodiccnt, 0);
1485 }
1486 else
1487 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1488
1489 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1490 }
1491}
1492
1493static void noinline
1494periodics_reschedule (EV_P)
1495{
1496 int i;
1497
1498 /* adjust periodics after time jump */
1499 for (i = 0; i < periodiccnt; ++i)
1500 {
1501 ev_periodic *w = (ev_periodic *)periodics [i];
1502
1503 if (w->reschedule_cb)
1504 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1505 else if (w->interval)
1506 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1507 }
1508
1509 /* now rebuild the heap */
1510 for (i = periodiccnt >> 1; i--; )
1511 downheap (periodics, periodiccnt, i);
1512}
1513#endif
1514
1515#if EV_IDLE_ENABLE 2009#if EV_IDLE_ENABLE
1516void inline_size 2010/* make idle watchers pending. this handles the "call-idle */
2011/* only when higher priorities are idle" logic */
2012inline_size void
1517idle_reify (EV_P) 2013idle_reify (EV_P)
1518{ 2014{
1519 if (expect_false (idleall)) 2015 if (expect_false (idleall))
1520 { 2016 {
1521 int pri; 2017 int pri;
… …
1533 } 2029 }
1534 } 2030 }
1535} 2031}
1536#endif 2032#endif
1537 2033
1538void inline_speed 2034/* make timers pending */
2035inline_size void
2036timers_reify (EV_P)
2037{
2038 EV_FREQUENT_CHECK;
2039
2040 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
2041 {
2042 do
2043 {
2044 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2045
2046 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2047
2048 /* first reschedule or stop timer */
2049 if (w->repeat)
2050 {
2051 ev_at (w) += w->repeat;
2052 if (ev_at (w) < mn_now)
2053 ev_at (w) = mn_now;
2054
2055 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
2056
2057 ANHE_at_cache (timers [HEAP0]);
2058 downheap (timers, timercnt, HEAP0);
2059 }
2060 else
2061 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2062
2063 EV_FREQUENT_CHECK;
2064 feed_reverse (EV_A_ (W)w);
2065 }
2066 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2067
2068 feed_reverse_done (EV_A_ EV_TIMEOUT);
2069 }
2070}
2071
2072#if EV_PERIODIC_ENABLE
2073/* make periodics pending */
2074inline_size void
2075periodics_reify (EV_P)
2076{
2077 EV_FREQUENT_CHECK;
2078
2079 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2080 {
2081 int feed_count = 0;
2082
2083 do
2084 {
2085 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2086
2087 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2088
2089 /* first reschedule or stop timer */
2090 if (w->reschedule_cb)
2091 {
2092 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2093
2094 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
2095
2096 ANHE_at_cache (periodics [HEAP0]);
2097 downheap (periodics, periodiccnt, HEAP0);
2098 }
2099 else if (w->interval)
2100 {
2101 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2102 /* if next trigger time is not sufficiently in the future, put it there */
2103 /* this might happen because of floating point inexactness */
2104 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2105 {
2106 ev_at (w) += w->interval;
2107
2108 /* if interval is unreasonably low we might still have a time in the past */
2109 /* so correct this. this will make the periodic very inexact, but the user */
2110 /* has effectively asked to get triggered more often than possible */
2111 if (ev_at (w) < ev_rt_now)
2112 ev_at (w) = ev_rt_now;
2113 }
2114
2115 ANHE_at_cache (periodics [HEAP0]);
2116 downheap (periodics, periodiccnt, HEAP0);
2117 }
2118 else
2119 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2120
2121 EV_FREQUENT_CHECK;
2122 feed_reverse (EV_A_ (W)w);
2123 }
2124 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
2125
2126 feed_reverse_done (EV_A_ EV_PERIODIC);
2127 }
2128}
2129
2130/* simply recalculate all periodics */
2131/* TODO: maybe ensure that at leats one event happens when jumping forward? */
2132static void noinline
2133periodics_reschedule (EV_P)
2134{
2135 int i;
2136
2137 /* adjust periodics after time jump */
2138 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
2139 {
2140 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2141
2142 if (w->reschedule_cb)
2143 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2144 else if (w->interval)
2145 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2146
2147 ANHE_at_cache (periodics [i]);
2148 }
2149
2150 reheap (periodics, periodiccnt);
2151}
2152#endif
2153
2154/* adjust all timers by a given offset */
2155static void noinline
2156timers_reschedule (EV_P_ ev_tstamp adjust)
2157{
2158 int i;
2159
2160 for (i = 0; i < timercnt; ++i)
2161 {
2162 ANHE *he = timers + i + HEAP0;
2163 ANHE_w (*he)->at += adjust;
2164 ANHE_at_cache (*he);
2165 }
2166}
2167
2168/* fetch new monotonic and realtime times from the kernel */
2169/* also detect if there was a timejump, and act accordingly */
2170inline_speed void
1539time_update (EV_P_ ev_tstamp max_block) 2171time_update (EV_P_ ev_tstamp max_block)
1540{ 2172{
1541 int i;
1542
1543#if EV_USE_MONOTONIC 2173#if EV_USE_MONOTONIC
1544 if (expect_true (have_monotonic)) 2174 if (expect_true (have_monotonic))
1545 { 2175 {
2176 int i;
1546 ev_tstamp odiff = rtmn_diff; 2177 ev_tstamp odiff = rtmn_diff;
1547 2178
1548 mn_now = get_clock (); 2179 mn_now = get_clock ();
1549 2180
1550 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2181 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1568 */ 2199 */
1569 for (i = 4; --i; ) 2200 for (i = 4; --i; )
1570 { 2201 {
1571 rtmn_diff = ev_rt_now - mn_now; 2202 rtmn_diff = ev_rt_now - mn_now;
1572 2203
1573 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 2204 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1574 return; /* all is well */ 2205 return; /* all is well */
1575 2206
1576 ev_rt_now = ev_time (); 2207 ev_rt_now = ev_time ();
1577 mn_now = get_clock (); 2208 mn_now = get_clock ();
1578 now_floor = mn_now; 2209 now_floor = mn_now;
1579 } 2210 }
1580 2211
2212 /* no timer adjustment, as the monotonic clock doesn't jump */
2213 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1581# if EV_PERIODIC_ENABLE 2214# if EV_PERIODIC_ENABLE
1582 periodics_reschedule (EV_A); 2215 periodics_reschedule (EV_A);
1583# endif 2216# endif
1584 /* no timer adjustment, as the monotonic clock doesn't jump */
1585 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1586 } 2217 }
1587 else 2218 else
1588#endif 2219#endif
1589 { 2220 {
1590 ev_rt_now = ev_time (); 2221 ev_rt_now = ev_time ();
1591 2222
1592 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2223 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1593 { 2224 {
2225 /* adjust timers. this is easy, as the offset is the same for all of them */
2226 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1594#if EV_PERIODIC_ENABLE 2227#if EV_PERIODIC_ENABLE
1595 periodics_reschedule (EV_A); 2228 periodics_reschedule (EV_A);
1596#endif 2229#endif
1597 /* adjust timers. this is easy, as the offset is the same for all of them */
1598 for (i = 0; i < timercnt; ++i)
1599 ((WT)timers [i])->at += ev_rt_now - mn_now;
1600 } 2230 }
1601 2231
1602 mn_now = ev_rt_now; 2232 mn_now = ev_rt_now;
1603 } 2233 }
1604} 2234}
1605 2235
1606void 2236void
1607ev_ref (EV_P)
1608{
1609 ++activecnt;
1610}
1611
1612void
1613ev_unref (EV_P)
1614{
1615 --activecnt;
1616}
1617
1618static int loop_done;
1619
1620void
1621ev_loop (EV_P_ int flags) 2237ev_loop (EV_P_ int flags)
1622{ 2238{
2239#if EV_MINIMAL < 2
2240 ++loop_depth;
2241#endif
2242
2243 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2244
1623 loop_done = EVUNLOOP_CANCEL; 2245 loop_done = EVUNLOOP_CANCEL;
1624 2246
1625 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2247 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1626 2248
1627 do 2249 do
1628 { 2250 {
2251#if EV_VERIFY >= 2
2252 ev_loop_verify (EV_A);
2253#endif
2254
1629#ifndef _WIN32 2255#ifndef _WIN32
1630 if (expect_false (curpid)) /* penalise the forking check even more */ 2256 if (expect_false (curpid)) /* penalise the forking check even more */
1631 if (expect_false (getpid () != curpid)) 2257 if (expect_false (getpid () != curpid))
1632 { 2258 {
1633 curpid = getpid (); 2259 curpid = getpid ();
… …
1639 /* we might have forked, so queue fork handlers */ 2265 /* we might have forked, so queue fork handlers */
1640 if (expect_false (postfork)) 2266 if (expect_false (postfork))
1641 if (forkcnt) 2267 if (forkcnt)
1642 { 2268 {
1643 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2269 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1644 call_pending (EV_A); 2270 EV_INVOKE_PENDING;
1645 } 2271 }
1646#endif 2272#endif
1647 2273
1648 /* queue prepare watchers (and execute them) */ 2274 /* queue prepare watchers (and execute them) */
1649 if (expect_false (preparecnt)) 2275 if (expect_false (preparecnt))
1650 { 2276 {
1651 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2277 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1652 call_pending (EV_A); 2278 EV_INVOKE_PENDING;
1653 } 2279 }
1654 2280
1655 if (expect_false (!activecnt)) 2281 if (expect_false (loop_done))
1656 break; 2282 break;
1657 2283
1658 /* we might have forked, so reify kernel state if necessary */ 2284 /* we might have forked, so reify kernel state if necessary */
1659 if (expect_false (postfork)) 2285 if (expect_false (postfork))
1660 loop_fork (EV_A); 2286 loop_fork (EV_A);
… …
1667 ev_tstamp waittime = 0.; 2293 ev_tstamp waittime = 0.;
1668 ev_tstamp sleeptime = 0.; 2294 ev_tstamp sleeptime = 0.;
1669 2295
1670 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2296 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1671 { 2297 {
2298 /* remember old timestamp for io_blocktime calculation */
2299 ev_tstamp prev_mn_now = mn_now;
2300
1672 /* update time to cancel out callback processing overhead */ 2301 /* update time to cancel out callback processing overhead */
1673 time_update (EV_A_ 1e100); 2302 time_update (EV_A_ 1e100);
1674 2303
1675 waittime = MAX_BLOCKTIME; 2304 waittime = MAX_BLOCKTIME;
1676 2305
1677 if (timercnt) 2306 if (timercnt)
1678 { 2307 {
1679 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 2308 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1680 if (waittime > to) waittime = to; 2309 if (waittime > to) waittime = to;
1681 } 2310 }
1682 2311
1683#if EV_PERIODIC_ENABLE 2312#if EV_PERIODIC_ENABLE
1684 if (periodiccnt) 2313 if (periodiccnt)
1685 { 2314 {
1686 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 2315 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1687 if (waittime > to) waittime = to; 2316 if (waittime > to) waittime = to;
1688 } 2317 }
1689#endif 2318#endif
1690 2319
2320 /* don't let timeouts decrease the waittime below timeout_blocktime */
1691 if (expect_false (waittime < timeout_blocktime)) 2321 if (expect_false (waittime < timeout_blocktime))
1692 waittime = timeout_blocktime; 2322 waittime = timeout_blocktime;
1693 2323
1694 sleeptime = waittime - backend_fudge; 2324 /* extra check because io_blocktime is commonly 0 */
1695
1696 if (expect_true (sleeptime > io_blocktime)) 2325 if (expect_false (io_blocktime))
1697 sleeptime = io_blocktime;
1698
1699 if (sleeptime)
1700 { 2326 {
2327 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2328
2329 if (sleeptime > waittime - backend_fudge)
2330 sleeptime = waittime - backend_fudge;
2331
2332 if (expect_true (sleeptime > 0.))
2333 {
1701 ev_sleep (sleeptime); 2334 ev_sleep (sleeptime);
1702 waittime -= sleeptime; 2335 waittime -= sleeptime;
2336 }
1703 } 2337 }
1704 } 2338 }
1705 2339
2340#if EV_MINIMAL < 2
1706 ++loop_count; 2341 ++loop_count;
2342#endif
2343 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1707 backend_poll (EV_A_ waittime); 2344 backend_poll (EV_A_ waittime);
2345 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1708 2346
1709 /* update ev_rt_now, do magic */ 2347 /* update ev_rt_now, do magic */
1710 time_update (EV_A_ waittime + sleeptime); 2348 time_update (EV_A_ waittime + sleeptime);
1711 } 2349 }
1712 2350
… …
1723 2361
1724 /* queue check watchers, to be executed first */ 2362 /* queue check watchers, to be executed first */
1725 if (expect_false (checkcnt)) 2363 if (expect_false (checkcnt))
1726 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2364 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1727 2365
1728 call_pending (EV_A); 2366 EV_INVOKE_PENDING;
1729 } 2367 }
1730 while (expect_true ( 2368 while (expect_true (
1731 activecnt 2369 activecnt
1732 && !loop_done 2370 && !loop_done
1733 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2371 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1734 )); 2372 ));
1735 2373
1736 if (loop_done == EVUNLOOP_ONE) 2374 if (loop_done == EVUNLOOP_ONE)
1737 loop_done = EVUNLOOP_CANCEL; 2375 loop_done = EVUNLOOP_CANCEL;
2376
2377#if EV_MINIMAL < 2
2378 --loop_depth;
2379#endif
1738} 2380}
1739 2381
1740void 2382void
1741ev_unloop (EV_P_ int how) 2383ev_unloop (EV_P_ int how)
1742{ 2384{
1743 loop_done = how; 2385 loop_done = how;
1744} 2386}
1745 2387
2388void
2389ev_ref (EV_P)
2390{
2391 ++activecnt;
2392}
2393
2394void
2395ev_unref (EV_P)
2396{
2397 --activecnt;
2398}
2399
2400void
2401ev_now_update (EV_P)
2402{
2403 time_update (EV_A_ 1e100);
2404}
2405
2406void
2407ev_suspend (EV_P)
2408{
2409 ev_now_update (EV_A);
2410}
2411
2412void
2413ev_resume (EV_P)
2414{
2415 ev_tstamp mn_prev = mn_now;
2416
2417 ev_now_update (EV_A);
2418 timers_reschedule (EV_A_ mn_now - mn_prev);
2419#if EV_PERIODIC_ENABLE
2420 /* TODO: really do this? */
2421 periodics_reschedule (EV_A);
2422#endif
2423}
2424
1746/*****************************************************************************/ 2425/*****************************************************************************/
2426/* singly-linked list management, used when the expected list length is short */
1747 2427
1748void inline_size 2428inline_size void
1749wlist_add (WL *head, WL elem) 2429wlist_add (WL *head, WL elem)
1750{ 2430{
1751 elem->next = *head; 2431 elem->next = *head;
1752 *head = elem; 2432 *head = elem;
1753} 2433}
1754 2434
1755void inline_size 2435inline_size void
1756wlist_del (WL *head, WL elem) 2436wlist_del (WL *head, WL elem)
1757{ 2437{
1758 while (*head) 2438 while (*head)
1759 { 2439 {
1760 if (*head == elem) 2440 if (expect_true (*head == elem))
1761 { 2441 {
1762 *head = elem->next; 2442 *head = elem->next;
1763 return; 2443 break;
1764 } 2444 }
1765 2445
1766 head = &(*head)->next; 2446 head = &(*head)->next;
1767 } 2447 }
1768} 2448}
1769 2449
1770void inline_speed 2450/* internal, faster, version of ev_clear_pending */
2451inline_speed void
1771clear_pending (EV_P_ W w) 2452clear_pending (EV_P_ W w)
1772{ 2453{
1773 if (w->pending) 2454 if (w->pending)
1774 { 2455 {
1775 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2456 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1776 w->pending = 0; 2457 w->pending = 0;
1777 } 2458 }
1778} 2459}
1779 2460
1780int 2461int
… …
1784 int pending = w_->pending; 2465 int pending = w_->pending;
1785 2466
1786 if (expect_true (pending)) 2467 if (expect_true (pending))
1787 { 2468 {
1788 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2469 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2470 p->w = (W)&pending_w;
1789 w_->pending = 0; 2471 w_->pending = 0;
1790 p->w = 0;
1791 return p->events; 2472 return p->events;
1792 } 2473 }
1793 else 2474 else
1794 return 0; 2475 return 0;
1795} 2476}
1796 2477
1797void inline_size 2478inline_size void
1798pri_adjust (EV_P_ W w) 2479pri_adjust (EV_P_ W w)
1799{ 2480{
1800 int pri = w->priority; 2481 int pri = ev_priority (w);
1801 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2482 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1802 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2483 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1803 w->priority = pri; 2484 ev_set_priority (w, pri);
1804} 2485}
1805 2486
1806void inline_speed 2487inline_speed void
1807ev_start (EV_P_ W w, int active) 2488ev_start (EV_P_ W w, int active)
1808{ 2489{
1809 pri_adjust (EV_A_ w); 2490 pri_adjust (EV_A_ w);
1810 w->active = active; 2491 w->active = active;
1811 ev_ref (EV_A); 2492 ev_ref (EV_A);
1812} 2493}
1813 2494
1814void inline_size 2495inline_size void
1815ev_stop (EV_P_ W w) 2496ev_stop (EV_P_ W w)
1816{ 2497{
1817 ev_unref (EV_A); 2498 ev_unref (EV_A);
1818 w->active = 0; 2499 w->active = 0;
1819} 2500}
… …
1826 int fd = w->fd; 2507 int fd = w->fd;
1827 2508
1828 if (expect_false (ev_is_active (w))) 2509 if (expect_false (ev_is_active (w)))
1829 return; 2510 return;
1830 2511
1831 assert (("ev_io_start called with negative fd", fd >= 0)); 2512 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2513 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2514
2515 EV_FREQUENT_CHECK;
1832 2516
1833 ev_start (EV_A_ (W)w, 1); 2517 ev_start (EV_A_ (W)w, 1);
1834 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2518 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1835 wlist_add (&anfds[fd].head, (WL)w); 2519 wlist_add (&anfds[fd].head, (WL)w);
1836 2520
1837 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2521 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1838 w->events &= ~EV_IOFDSET; 2522 w->events &= ~EV__IOFDSET;
2523
2524 EV_FREQUENT_CHECK;
1839} 2525}
1840 2526
1841void noinline 2527void noinline
1842ev_io_stop (EV_P_ ev_io *w) 2528ev_io_stop (EV_P_ ev_io *w)
1843{ 2529{
1844 clear_pending (EV_A_ (W)w); 2530 clear_pending (EV_A_ (W)w);
1845 if (expect_false (!ev_is_active (w))) 2531 if (expect_false (!ev_is_active (w)))
1846 return; 2532 return;
1847 2533
1848 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2534 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2535
2536 EV_FREQUENT_CHECK;
1849 2537
1850 wlist_del (&anfds[w->fd].head, (WL)w); 2538 wlist_del (&anfds[w->fd].head, (WL)w);
1851 ev_stop (EV_A_ (W)w); 2539 ev_stop (EV_A_ (W)w);
1852 2540
1853 fd_change (EV_A_ w->fd, 1); 2541 fd_change (EV_A_ w->fd, 1);
2542
2543 EV_FREQUENT_CHECK;
1854} 2544}
1855 2545
1856void noinline 2546void noinline
1857ev_timer_start (EV_P_ ev_timer *w) 2547ev_timer_start (EV_P_ ev_timer *w)
1858{ 2548{
1859 if (expect_false (ev_is_active (w))) 2549 if (expect_false (ev_is_active (w)))
1860 return; 2550 return;
1861 2551
1862 ((WT)w)->at += mn_now; 2552 ev_at (w) += mn_now;
1863 2553
1864 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2554 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1865 2555
2556 EV_FREQUENT_CHECK;
2557
2558 ++timercnt;
1866 ev_start (EV_A_ (W)w, ++timercnt); 2559 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1867 array_needsize (WT, timers, timermax, timercnt, EMPTY2); 2560 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1868 timers [timercnt - 1] = (WT)w; 2561 ANHE_w (timers [ev_active (w)]) = (WT)w;
1869 upheap (timers, timercnt - 1); 2562 ANHE_at_cache (timers [ev_active (w)]);
2563 upheap (timers, ev_active (w));
1870 2564
2565 EV_FREQUENT_CHECK;
2566
1871 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ 2567 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1872} 2568}
1873 2569
1874void noinline 2570void noinline
1875ev_timer_stop (EV_P_ ev_timer *w) 2571ev_timer_stop (EV_P_ ev_timer *w)
1876{ 2572{
1877 clear_pending (EV_A_ (W)w); 2573 clear_pending (EV_A_ (W)w);
1878 if (expect_false (!ev_is_active (w))) 2574 if (expect_false (!ev_is_active (w)))
1879 return; 2575 return;
1880 2576
1881 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w)); 2577 EV_FREQUENT_CHECK;
1882 2578
1883 { 2579 {
1884 int active = ((W)w)->active; 2580 int active = ev_active (w);
1885 2581
2582 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2583
2584 --timercnt;
2585
1886 if (expect_true (--active < --timercnt)) 2586 if (expect_true (active < timercnt + HEAP0))
1887 { 2587 {
1888 timers [active] = timers [timercnt]; 2588 timers [active] = timers [timercnt + HEAP0];
1889 adjustheap (timers, timercnt, active); 2589 adjustheap (timers, timercnt, active);
1890 } 2590 }
1891 } 2591 }
1892 2592
1893 ((WT)w)->at -= mn_now; 2593 ev_at (w) -= mn_now;
1894 2594
1895 ev_stop (EV_A_ (W)w); 2595 ev_stop (EV_A_ (W)w);
2596
2597 EV_FREQUENT_CHECK;
1896} 2598}
1897 2599
1898void noinline 2600void noinline
1899ev_timer_again (EV_P_ ev_timer *w) 2601ev_timer_again (EV_P_ ev_timer *w)
1900{ 2602{
2603 EV_FREQUENT_CHECK;
2604
1901 if (ev_is_active (w)) 2605 if (ev_is_active (w))
1902 { 2606 {
1903 if (w->repeat) 2607 if (w->repeat)
1904 { 2608 {
1905 ((WT)w)->at = mn_now + w->repeat; 2609 ev_at (w) = mn_now + w->repeat;
2610 ANHE_at_cache (timers [ev_active (w)]);
1906 adjustheap (timers, timercnt, ((W)w)->active - 1); 2611 adjustheap (timers, timercnt, ev_active (w));
1907 } 2612 }
1908 else 2613 else
1909 ev_timer_stop (EV_A_ w); 2614 ev_timer_stop (EV_A_ w);
1910 } 2615 }
1911 else if (w->repeat) 2616 else if (w->repeat)
1912 { 2617 {
1913 w->at = w->repeat; 2618 ev_at (w) = w->repeat;
1914 ev_timer_start (EV_A_ w); 2619 ev_timer_start (EV_A_ w);
1915 } 2620 }
2621
2622 EV_FREQUENT_CHECK;
2623}
2624
2625ev_tstamp
2626ev_timer_remaining (EV_P_ ev_timer *w)
2627{
2628 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1916} 2629}
1917 2630
1918#if EV_PERIODIC_ENABLE 2631#if EV_PERIODIC_ENABLE
1919void noinline 2632void noinline
1920ev_periodic_start (EV_P_ ev_periodic *w) 2633ev_periodic_start (EV_P_ ev_periodic *w)
1921{ 2634{
1922 if (expect_false (ev_is_active (w))) 2635 if (expect_false (ev_is_active (w)))
1923 return; 2636 return;
1924 2637
1925 if (w->reschedule_cb) 2638 if (w->reschedule_cb)
1926 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2639 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1927 else if (w->interval) 2640 else if (w->interval)
1928 { 2641 {
1929 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2642 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1930 /* this formula differs from the one in periodic_reify because we do not always round up */ 2643 /* this formula differs from the one in periodic_reify because we do not always round up */
1931 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2644 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1932 } 2645 }
1933 else 2646 else
1934 ((WT)w)->at = w->offset; 2647 ev_at (w) = w->offset;
1935 2648
2649 EV_FREQUENT_CHECK;
2650
2651 ++periodiccnt;
1936 ev_start (EV_A_ (W)w, ++periodiccnt); 2652 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1937 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2); 2653 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1938 periodics [periodiccnt - 1] = (WT)w; 2654 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1939 upheap (periodics, periodiccnt - 1); 2655 ANHE_at_cache (periodics [ev_active (w)]);
2656 upheap (periodics, ev_active (w));
1940 2657
2658 EV_FREQUENT_CHECK;
2659
1941 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ 2660 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1942} 2661}
1943 2662
1944void noinline 2663void noinline
1945ev_periodic_stop (EV_P_ ev_periodic *w) 2664ev_periodic_stop (EV_P_ ev_periodic *w)
1946{ 2665{
1947 clear_pending (EV_A_ (W)w); 2666 clear_pending (EV_A_ (W)w);
1948 if (expect_false (!ev_is_active (w))) 2667 if (expect_false (!ev_is_active (w)))
1949 return; 2668 return;
1950 2669
1951 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w)); 2670 EV_FREQUENT_CHECK;
1952 2671
1953 { 2672 {
1954 int active = ((W)w)->active; 2673 int active = ev_active (w);
1955 2674
2675 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2676
2677 --periodiccnt;
2678
1956 if (expect_true (--active < --periodiccnt)) 2679 if (expect_true (active < periodiccnt + HEAP0))
1957 { 2680 {
1958 periodics [active] = periodics [periodiccnt]; 2681 periodics [active] = periodics [periodiccnt + HEAP0];
1959 adjustheap (periodics, periodiccnt, active); 2682 adjustheap (periodics, periodiccnt, active);
1960 } 2683 }
1961 } 2684 }
1962 2685
1963 ev_stop (EV_A_ (W)w); 2686 ev_stop (EV_A_ (W)w);
2687
2688 EV_FREQUENT_CHECK;
1964} 2689}
1965 2690
1966void noinline 2691void noinline
1967ev_periodic_again (EV_P_ ev_periodic *w) 2692ev_periodic_again (EV_P_ ev_periodic *w)
1968{ 2693{
… …
1977#endif 2702#endif
1978 2703
1979void noinline 2704void noinline
1980ev_signal_start (EV_P_ ev_signal *w) 2705ev_signal_start (EV_P_ ev_signal *w)
1981{ 2706{
1982#if EV_MULTIPLICITY
1983 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1984#endif
1985 if (expect_false (ev_is_active (w))) 2707 if (expect_false (ev_is_active (w)))
1986 return; 2708 return;
1987 2709
1988 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2710 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
1989 2711
1990 evpipe_init (EV_A); 2712#if EV_MULTIPLICITY
2713 assert (("libev: a signal must not be attached to two different loops",
2714 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
1991 2715
2716 signals [w->signum - 1].loop = EV_A;
2717#endif
2718
2719 EV_FREQUENT_CHECK;
2720
2721#if EV_USE_SIGNALFD
2722 if (sigfd == -2)
1992 { 2723 {
1993#ifndef _WIN32 2724 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
1994 sigset_t full, prev; 2725 if (sigfd < 0 && errno == EINVAL)
1995 sigfillset (&full); 2726 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
1996 sigprocmask (SIG_SETMASK, &full, &prev);
1997#endif
1998 2727
1999 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2728 if (sigfd >= 0)
2729 {
2730 fd_intern (sigfd); /* doing it twice will not hurt */
2000 2731
2001#ifndef _WIN32 2732 sigemptyset (&sigfd_set);
2002 sigprocmask (SIG_SETMASK, &prev, 0); 2733
2003#endif 2734 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2735 ev_set_priority (&sigfd_w, EV_MAXPRI);
2736 ev_io_start (EV_A_ &sigfd_w);
2737 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2738 }
2004 } 2739 }
2740
2741 if (sigfd >= 0)
2742 {
2743 /* TODO: check .head */
2744 sigaddset (&sigfd_set, w->signum);
2745 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2746
2747 signalfd (sigfd, &sigfd_set, 0);
2748 }
2749#endif
2005 2750
2006 ev_start (EV_A_ (W)w, 1); 2751 ev_start (EV_A_ (W)w, 1);
2007 wlist_add (&signals [w->signum - 1].head, (WL)w); 2752 wlist_add (&signals [w->signum - 1].head, (WL)w);
2008 2753
2009 if (!((WL)w)->next) 2754 if (!((WL)w)->next)
2755# if EV_USE_SIGNALFD
2756 if (sigfd < 0) /*TODO*/
2757# endif
2010 { 2758 {
2011#if _WIN32 2759# ifdef _WIN32
2760 evpipe_init (EV_A);
2761
2012 signal (w->signum, ev_sighandler); 2762 signal (w->signum, ev_sighandler);
2013#else 2763# else
2014 struct sigaction sa; 2764 struct sigaction sa;
2765
2766 evpipe_init (EV_A);
2767
2015 sa.sa_handler = ev_sighandler; 2768 sa.sa_handler = ev_sighandler;
2016 sigfillset (&sa.sa_mask); 2769 sigfillset (&sa.sa_mask);
2017 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2770 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2018 sigaction (w->signum, &sa, 0); 2771 sigaction (w->signum, &sa, 0);
2772
2773 sigemptyset (&sa.sa_mask);
2774 sigaddset (&sa.sa_mask, w->signum);
2775 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2019#endif 2776#endif
2020 } 2777 }
2778
2779 EV_FREQUENT_CHECK;
2021} 2780}
2022 2781
2023void noinline 2782void noinline
2024ev_signal_stop (EV_P_ ev_signal *w) 2783ev_signal_stop (EV_P_ ev_signal *w)
2025{ 2784{
2026 clear_pending (EV_A_ (W)w); 2785 clear_pending (EV_A_ (W)w);
2027 if (expect_false (!ev_is_active (w))) 2786 if (expect_false (!ev_is_active (w)))
2028 return; 2787 return;
2029 2788
2789 EV_FREQUENT_CHECK;
2790
2030 wlist_del (&signals [w->signum - 1].head, (WL)w); 2791 wlist_del (&signals [w->signum - 1].head, (WL)w);
2031 ev_stop (EV_A_ (W)w); 2792 ev_stop (EV_A_ (W)w);
2032 2793
2033 if (!signals [w->signum - 1].head) 2794 if (!signals [w->signum - 1].head)
2795 {
2796#if EV_MULTIPLICITY
2797 signals [w->signum - 1].loop = 0; /* unattach from signal */
2798#endif
2799#if EV_USE_SIGNALFD
2800 if (sigfd >= 0)
2801 {
2802 sigset_t ss;
2803
2804 sigemptyset (&ss);
2805 sigaddset (&ss, w->signum);
2806 sigdelset (&sigfd_set, w->signum);
2807
2808 signalfd (sigfd, &sigfd_set, 0);
2809 sigprocmask (SIG_UNBLOCK, &ss, 0);
2810 }
2811 else
2812#endif
2034 signal (w->signum, SIG_DFL); 2813 signal (w->signum, SIG_DFL);
2814 }
2815
2816 EV_FREQUENT_CHECK;
2035} 2817}
2036 2818
2037void 2819void
2038ev_child_start (EV_P_ ev_child *w) 2820ev_child_start (EV_P_ ev_child *w)
2039{ 2821{
2040#if EV_MULTIPLICITY 2822#if EV_MULTIPLICITY
2041 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2823 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2042#endif 2824#endif
2043 if (expect_false (ev_is_active (w))) 2825 if (expect_false (ev_is_active (w)))
2044 return; 2826 return;
2045 2827
2828 EV_FREQUENT_CHECK;
2829
2046 ev_start (EV_A_ (W)w, 1); 2830 ev_start (EV_A_ (W)w, 1);
2047 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2831 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2832
2833 EV_FREQUENT_CHECK;
2048} 2834}
2049 2835
2050void 2836void
2051ev_child_stop (EV_P_ ev_child *w) 2837ev_child_stop (EV_P_ ev_child *w)
2052{ 2838{
2053 clear_pending (EV_A_ (W)w); 2839 clear_pending (EV_A_ (W)w);
2054 if (expect_false (!ev_is_active (w))) 2840 if (expect_false (!ev_is_active (w)))
2055 return; 2841 return;
2056 2842
2843 EV_FREQUENT_CHECK;
2844
2057 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2845 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2058 ev_stop (EV_A_ (W)w); 2846 ev_stop (EV_A_ (W)w);
2847
2848 EV_FREQUENT_CHECK;
2059} 2849}
2060 2850
2061#if EV_STAT_ENABLE 2851#if EV_STAT_ENABLE
2062 2852
2063# ifdef _WIN32 2853# ifdef _WIN32
2064# undef lstat 2854# undef lstat
2065# define lstat(a,b) _stati64 (a,b) 2855# define lstat(a,b) _stati64 (a,b)
2066# endif 2856# endif
2067 2857
2068#define DEF_STAT_INTERVAL 5.0074891 2858#define DEF_STAT_INTERVAL 5.0074891
2859#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2069#define MIN_STAT_INTERVAL 0.1074891 2860#define MIN_STAT_INTERVAL 0.1074891
2070 2861
2071static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2862static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2072 2863
2073#if EV_USE_INOTIFY 2864#if EV_USE_INOTIFY
2074# define EV_INOTIFY_BUFSIZE 8192 2865
2866/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2867# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2075 2868
2076static void noinline 2869static void noinline
2077infy_add (EV_P_ ev_stat *w) 2870infy_add (EV_P_ ev_stat *w)
2078{ 2871{
2079 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); 2872 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);
2080 2873
2081 if (w->wd < 0) 2874 if (w->wd >= 0)
2875 {
2876 struct statfs sfs;
2877
2878 /* now local changes will be tracked by inotify, but remote changes won't */
2879 /* unless the filesystem is known to be local, we therefore still poll */
2880 /* also do poll on <2.6.25, but with normal frequency */
2881
2882 if (!fs_2625)
2883 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2884 else if (!statfs (w->path, &sfs)
2885 && (sfs.f_type == 0x1373 /* devfs */
2886 || sfs.f_type == 0xEF53 /* ext2/3 */
2887 || sfs.f_type == 0x3153464a /* jfs */
2888 || sfs.f_type == 0x52654973 /* reiser3 */
2889 || sfs.f_type == 0x01021994 /* tempfs */
2890 || sfs.f_type == 0x58465342 /* xfs */))
2891 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2892 else
2893 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2082 { 2894 }
2083 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2895 else
2896 {
2897 /* can't use inotify, continue to stat */
2898 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2084 2899
2085 /* monitor some parent directory for speedup hints */ 2900 /* if path is not there, monitor some parent directory for speedup hints */
2901 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2902 /* but an efficiency issue only */
2086 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2903 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2087 { 2904 {
2088 char path [4096]; 2905 char path [4096];
2089 strcpy (path, w->path); 2906 strcpy (path, w->path);
2090 2907
… …
2093 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2910 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2094 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2911 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2095 2912
2096 char *pend = strrchr (path, '/'); 2913 char *pend = strrchr (path, '/');
2097 2914
2098 if (!pend) 2915 if (!pend || pend == path)
2099 break; /* whoops, no '/', complain to your admin */ 2916 break;
2100 2917
2101 *pend = 0; 2918 *pend = 0;
2102 w->wd = inotify_add_watch (fs_fd, path, mask); 2919 w->wd = inotify_add_watch (fs_fd, path, mask);
2103 } 2920 }
2104 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2921 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2105 } 2922 }
2106 } 2923 }
2107 else
2108 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2109 2924
2110 if (w->wd >= 0) 2925 if (w->wd >= 0)
2111 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2926 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2927
2928 /* now re-arm timer, if required */
2929 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2930 ev_timer_again (EV_A_ &w->timer);
2931 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2112} 2932}
2113 2933
2114static void noinline 2934static void noinline
2115infy_del (EV_P_ ev_stat *w) 2935infy_del (EV_P_ ev_stat *w)
2116{ 2936{
… …
2130 2950
2131static void noinline 2951static void noinline
2132infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2952infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2133{ 2953{
2134 if (slot < 0) 2954 if (slot < 0)
2135 /* overflow, need to check for all hahs slots */ 2955 /* overflow, need to check for all hash slots */
2136 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2956 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2137 infy_wd (EV_A_ slot, wd, ev); 2957 infy_wd (EV_A_ slot, wd, ev);
2138 else 2958 else
2139 { 2959 {
2140 WL w_; 2960 WL w_;
… …
2146 2966
2147 if (w->wd == wd || wd == -1) 2967 if (w->wd == wd || wd == -1)
2148 { 2968 {
2149 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2969 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2150 { 2970 {
2971 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2151 w->wd = -1; 2972 w->wd = -1;
2152 infy_add (EV_A_ w); /* re-add, no matter what */ 2973 infy_add (EV_A_ w); /* re-add, no matter what */
2153 } 2974 }
2154 2975
2155 stat_timer_cb (EV_A_ &w->timer, 0); 2976 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2160 2981
2161static void 2982static void
2162infy_cb (EV_P_ ev_io *w, int revents) 2983infy_cb (EV_P_ ev_io *w, int revents)
2163{ 2984{
2164 char buf [EV_INOTIFY_BUFSIZE]; 2985 char buf [EV_INOTIFY_BUFSIZE];
2165 struct inotify_event *ev = (struct inotify_event *)buf;
2166 int ofs; 2986 int ofs;
2167 int len = read (fs_fd, buf, sizeof (buf)); 2987 int len = read (fs_fd, buf, sizeof (buf));
2168 2988
2169 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 2989 for (ofs = 0; ofs < len; )
2990 {
2991 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2170 infy_wd (EV_A_ ev->wd, ev->wd, ev); 2992 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2993 ofs += sizeof (struct inotify_event) + ev->len;
2994 }
2171} 2995}
2172 2996
2173void inline_size 2997inline_size void
2998check_2625 (EV_P)
2999{
3000 /* kernels < 2.6.25 are borked
3001 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3002 */
3003 struct utsname buf;
3004 int major, minor, micro;
3005
3006 if (uname (&buf))
3007 return;
3008
3009 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
3010 return;
3011
3012 if (major < 2
3013 || (major == 2 && minor < 6)
3014 || (major == 2 && minor == 6 && micro < 25))
3015 return;
3016
3017 fs_2625 = 1;
3018}
3019
3020inline_size int
3021infy_newfd (void)
3022{
3023#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3024 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3025 if (fd >= 0)
3026 return fd;
3027#endif
3028 return inotify_init ();
3029}
3030
3031inline_size void
2174infy_init (EV_P) 3032infy_init (EV_P)
2175{ 3033{
2176 if (fs_fd != -2) 3034 if (fs_fd != -2)
2177 return; 3035 return;
2178 3036
3037 fs_fd = -1;
3038
3039 check_2625 (EV_A);
3040
2179 fs_fd = inotify_init (); 3041 fs_fd = infy_newfd ();
2180 3042
2181 if (fs_fd >= 0) 3043 if (fs_fd >= 0)
2182 { 3044 {
3045 fd_intern (fs_fd);
2183 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3046 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2184 ev_set_priority (&fs_w, EV_MAXPRI); 3047 ev_set_priority (&fs_w, EV_MAXPRI);
2185 ev_io_start (EV_A_ &fs_w); 3048 ev_io_start (EV_A_ &fs_w);
3049 ev_unref (EV_A);
2186 } 3050 }
2187} 3051}
2188 3052
2189void inline_size 3053inline_size void
2190infy_fork (EV_P) 3054infy_fork (EV_P)
2191{ 3055{
2192 int slot; 3056 int slot;
2193 3057
2194 if (fs_fd < 0) 3058 if (fs_fd < 0)
2195 return; 3059 return;
2196 3060
3061 ev_ref (EV_A);
3062 ev_io_stop (EV_A_ &fs_w);
2197 close (fs_fd); 3063 close (fs_fd);
2198 fs_fd = inotify_init (); 3064 fs_fd = infy_newfd ();
3065
3066 if (fs_fd >= 0)
3067 {
3068 fd_intern (fs_fd);
3069 ev_io_set (&fs_w, fs_fd, EV_READ);
3070 ev_io_start (EV_A_ &fs_w);
3071 ev_unref (EV_A);
3072 }
2199 3073
2200 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3074 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2201 { 3075 {
2202 WL w_ = fs_hash [slot].head; 3076 WL w_ = fs_hash [slot].head;
2203 fs_hash [slot].head = 0; 3077 fs_hash [slot].head = 0;
… …
2210 w->wd = -1; 3084 w->wd = -1;
2211 3085
2212 if (fs_fd >= 0) 3086 if (fs_fd >= 0)
2213 infy_add (EV_A_ w); /* re-add, no matter what */ 3087 infy_add (EV_A_ w); /* re-add, no matter what */
2214 else 3088 else
3089 {
3090 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3091 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2215 ev_timer_start (EV_A_ &w->timer); 3092 ev_timer_again (EV_A_ &w->timer);
3093 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3094 }
2216 } 3095 }
2217
2218 } 3096 }
2219} 3097}
2220 3098
3099#endif
3100
3101#ifdef _WIN32
3102# define EV_LSTAT(p,b) _stati64 (p, b)
3103#else
3104# define EV_LSTAT(p,b) lstat (p, b)
2221#endif 3105#endif
2222 3106
2223void 3107void
2224ev_stat_stat (EV_P_ ev_stat *w) 3108ev_stat_stat (EV_P_ ev_stat *w)
2225{ 3109{
… …
2232static void noinline 3116static void noinline
2233stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3117stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2234{ 3118{
2235 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3119 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2236 3120
2237 /* we copy this here each the time so that */ 3121 ev_statdata prev = w->attr;
2238 /* prev has the old value when the callback gets invoked */
2239 w->prev = w->attr;
2240 ev_stat_stat (EV_A_ w); 3122 ev_stat_stat (EV_A_ w);
2241 3123
2242 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3124 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2243 if ( 3125 if (
2244 w->prev.st_dev != w->attr.st_dev 3126 prev.st_dev != w->attr.st_dev
2245 || w->prev.st_ino != w->attr.st_ino 3127 || prev.st_ino != w->attr.st_ino
2246 || w->prev.st_mode != w->attr.st_mode 3128 || prev.st_mode != w->attr.st_mode
2247 || w->prev.st_nlink != w->attr.st_nlink 3129 || prev.st_nlink != w->attr.st_nlink
2248 || w->prev.st_uid != w->attr.st_uid 3130 || prev.st_uid != w->attr.st_uid
2249 || w->prev.st_gid != w->attr.st_gid 3131 || prev.st_gid != w->attr.st_gid
2250 || w->prev.st_rdev != w->attr.st_rdev 3132 || prev.st_rdev != w->attr.st_rdev
2251 || w->prev.st_size != w->attr.st_size 3133 || prev.st_size != w->attr.st_size
2252 || w->prev.st_atime != w->attr.st_atime 3134 || prev.st_atime != w->attr.st_atime
2253 || w->prev.st_mtime != w->attr.st_mtime 3135 || prev.st_mtime != w->attr.st_mtime
2254 || w->prev.st_ctime != w->attr.st_ctime 3136 || prev.st_ctime != w->attr.st_ctime
2255 ) { 3137 ) {
3138 /* we only update w->prev on actual differences */
3139 /* in case we test more often than invoke the callback, */
3140 /* to ensure that prev is always different to attr */
3141 w->prev = prev;
3142
2256 #if EV_USE_INOTIFY 3143 #if EV_USE_INOTIFY
3144 if (fs_fd >= 0)
3145 {
2257 infy_del (EV_A_ w); 3146 infy_del (EV_A_ w);
2258 infy_add (EV_A_ w); 3147 infy_add (EV_A_ w);
2259 ev_stat_stat (EV_A_ w); /* avoid race... */ 3148 ev_stat_stat (EV_A_ w); /* avoid race... */
3149 }
2260 #endif 3150 #endif
2261 3151
2262 ev_feed_event (EV_A_ w, EV_STAT); 3152 ev_feed_event (EV_A_ w, EV_STAT);
2263 } 3153 }
2264} 3154}
… …
2267ev_stat_start (EV_P_ ev_stat *w) 3157ev_stat_start (EV_P_ ev_stat *w)
2268{ 3158{
2269 if (expect_false (ev_is_active (w))) 3159 if (expect_false (ev_is_active (w)))
2270 return; 3160 return;
2271 3161
2272 /* since we use memcmp, we need to clear any padding data etc. */
2273 memset (&w->prev, 0, sizeof (ev_statdata));
2274 memset (&w->attr, 0, sizeof (ev_statdata));
2275
2276 ev_stat_stat (EV_A_ w); 3162 ev_stat_stat (EV_A_ w);
2277 3163
3164 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2278 if (w->interval < MIN_STAT_INTERVAL) 3165 w->interval = MIN_STAT_INTERVAL;
2279 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2280 3166
2281 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3167 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2282 ev_set_priority (&w->timer, ev_priority (w)); 3168 ev_set_priority (&w->timer, ev_priority (w));
2283 3169
2284#if EV_USE_INOTIFY 3170#if EV_USE_INOTIFY
2285 infy_init (EV_A); 3171 infy_init (EV_A);
2286 3172
2287 if (fs_fd >= 0) 3173 if (fs_fd >= 0)
2288 infy_add (EV_A_ w); 3174 infy_add (EV_A_ w);
2289 else 3175 else
2290#endif 3176#endif
3177 {
2291 ev_timer_start (EV_A_ &w->timer); 3178 ev_timer_again (EV_A_ &w->timer);
3179 ev_unref (EV_A);
3180 }
2292 3181
2293 ev_start (EV_A_ (W)w, 1); 3182 ev_start (EV_A_ (W)w, 1);
3183
3184 EV_FREQUENT_CHECK;
2294} 3185}
2295 3186
2296void 3187void
2297ev_stat_stop (EV_P_ ev_stat *w) 3188ev_stat_stop (EV_P_ ev_stat *w)
2298{ 3189{
2299 clear_pending (EV_A_ (W)w); 3190 clear_pending (EV_A_ (W)w);
2300 if (expect_false (!ev_is_active (w))) 3191 if (expect_false (!ev_is_active (w)))
2301 return; 3192 return;
2302 3193
3194 EV_FREQUENT_CHECK;
3195
2303#if EV_USE_INOTIFY 3196#if EV_USE_INOTIFY
2304 infy_del (EV_A_ w); 3197 infy_del (EV_A_ w);
2305#endif 3198#endif
3199
3200 if (ev_is_active (&w->timer))
3201 {
3202 ev_ref (EV_A);
2306 ev_timer_stop (EV_A_ &w->timer); 3203 ev_timer_stop (EV_A_ &w->timer);
3204 }
2307 3205
2308 ev_stop (EV_A_ (W)w); 3206 ev_stop (EV_A_ (W)w);
3207
3208 EV_FREQUENT_CHECK;
2309} 3209}
2310#endif 3210#endif
2311 3211
2312#if EV_IDLE_ENABLE 3212#if EV_IDLE_ENABLE
2313void 3213void
… …
2315{ 3215{
2316 if (expect_false (ev_is_active (w))) 3216 if (expect_false (ev_is_active (w)))
2317 return; 3217 return;
2318 3218
2319 pri_adjust (EV_A_ (W)w); 3219 pri_adjust (EV_A_ (W)w);
3220
3221 EV_FREQUENT_CHECK;
2320 3222
2321 { 3223 {
2322 int active = ++idlecnt [ABSPRI (w)]; 3224 int active = ++idlecnt [ABSPRI (w)];
2323 3225
2324 ++idleall; 3226 ++idleall;
2325 ev_start (EV_A_ (W)w, active); 3227 ev_start (EV_A_ (W)w, active);
2326 3228
2327 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 3229 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2328 idles [ABSPRI (w)][active - 1] = w; 3230 idles [ABSPRI (w)][active - 1] = w;
2329 } 3231 }
3232
3233 EV_FREQUENT_CHECK;
2330} 3234}
2331 3235
2332void 3236void
2333ev_idle_stop (EV_P_ ev_idle *w) 3237ev_idle_stop (EV_P_ ev_idle *w)
2334{ 3238{
2335 clear_pending (EV_A_ (W)w); 3239 clear_pending (EV_A_ (W)w);
2336 if (expect_false (!ev_is_active (w))) 3240 if (expect_false (!ev_is_active (w)))
2337 return; 3241 return;
2338 3242
3243 EV_FREQUENT_CHECK;
3244
2339 { 3245 {
2340 int active = ((W)w)->active; 3246 int active = ev_active (w);
2341 3247
2342 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3248 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2343 ((W)idles [ABSPRI (w)][active - 1])->active = active; 3249 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2344 3250
2345 ev_stop (EV_A_ (W)w); 3251 ev_stop (EV_A_ (W)w);
2346 --idleall; 3252 --idleall;
2347 } 3253 }
3254
3255 EV_FREQUENT_CHECK;
2348} 3256}
2349#endif 3257#endif
2350 3258
2351void 3259void
2352ev_prepare_start (EV_P_ ev_prepare *w) 3260ev_prepare_start (EV_P_ ev_prepare *w)
2353{ 3261{
2354 if (expect_false (ev_is_active (w))) 3262 if (expect_false (ev_is_active (w)))
2355 return; 3263 return;
3264
3265 EV_FREQUENT_CHECK;
2356 3266
2357 ev_start (EV_A_ (W)w, ++preparecnt); 3267 ev_start (EV_A_ (W)w, ++preparecnt);
2358 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3268 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2359 prepares [preparecnt - 1] = w; 3269 prepares [preparecnt - 1] = w;
3270
3271 EV_FREQUENT_CHECK;
2360} 3272}
2361 3273
2362void 3274void
2363ev_prepare_stop (EV_P_ ev_prepare *w) 3275ev_prepare_stop (EV_P_ ev_prepare *w)
2364{ 3276{
2365 clear_pending (EV_A_ (W)w); 3277 clear_pending (EV_A_ (W)w);
2366 if (expect_false (!ev_is_active (w))) 3278 if (expect_false (!ev_is_active (w)))
2367 return; 3279 return;
2368 3280
3281 EV_FREQUENT_CHECK;
3282
2369 { 3283 {
2370 int active = ((W)w)->active; 3284 int active = ev_active (w);
3285
2371 prepares [active - 1] = prepares [--preparecnt]; 3286 prepares [active - 1] = prepares [--preparecnt];
2372 ((W)prepares [active - 1])->active = active; 3287 ev_active (prepares [active - 1]) = active;
2373 } 3288 }
2374 3289
2375 ev_stop (EV_A_ (W)w); 3290 ev_stop (EV_A_ (W)w);
3291
3292 EV_FREQUENT_CHECK;
2376} 3293}
2377 3294
2378void 3295void
2379ev_check_start (EV_P_ ev_check *w) 3296ev_check_start (EV_P_ ev_check *w)
2380{ 3297{
2381 if (expect_false (ev_is_active (w))) 3298 if (expect_false (ev_is_active (w)))
2382 return; 3299 return;
3300
3301 EV_FREQUENT_CHECK;
2383 3302
2384 ev_start (EV_A_ (W)w, ++checkcnt); 3303 ev_start (EV_A_ (W)w, ++checkcnt);
2385 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3304 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2386 checks [checkcnt - 1] = w; 3305 checks [checkcnt - 1] = w;
3306
3307 EV_FREQUENT_CHECK;
2387} 3308}
2388 3309
2389void 3310void
2390ev_check_stop (EV_P_ ev_check *w) 3311ev_check_stop (EV_P_ ev_check *w)
2391{ 3312{
2392 clear_pending (EV_A_ (W)w); 3313 clear_pending (EV_A_ (W)w);
2393 if (expect_false (!ev_is_active (w))) 3314 if (expect_false (!ev_is_active (w)))
2394 return; 3315 return;
2395 3316
3317 EV_FREQUENT_CHECK;
3318
2396 { 3319 {
2397 int active = ((W)w)->active; 3320 int active = ev_active (w);
3321
2398 checks [active - 1] = checks [--checkcnt]; 3322 checks [active - 1] = checks [--checkcnt];
2399 ((W)checks [active - 1])->active = active; 3323 ev_active (checks [active - 1]) = active;
2400 } 3324 }
2401 3325
2402 ev_stop (EV_A_ (W)w); 3326 ev_stop (EV_A_ (W)w);
3327
3328 EV_FREQUENT_CHECK;
2403} 3329}
2404 3330
2405#if EV_EMBED_ENABLE 3331#if EV_EMBED_ENABLE
2406void noinline 3332void noinline
2407ev_embed_sweep (EV_P_ ev_embed *w) 3333ev_embed_sweep (EV_P_ ev_embed *w)
… …
2424embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3350embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2425{ 3351{
2426 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3352 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2427 3353
2428 { 3354 {
2429 struct ev_loop *loop = w->other; 3355 EV_P = w->other;
2430 3356
2431 while (fdchangecnt) 3357 while (fdchangecnt)
2432 { 3358 {
2433 fd_reify (EV_A); 3359 fd_reify (EV_A);
2434 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3360 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2435 } 3361 }
2436 } 3362 }
2437} 3363}
2438 3364
3365static void
3366embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3367{
3368 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3369
3370 ev_embed_stop (EV_A_ w);
3371
3372 {
3373 EV_P = w->other;
3374
3375 ev_loop_fork (EV_A);
3376 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3377 }
3378
3379 ev_embed_start (EV_A_ w);
3380}
3381
2439#if 0 3382#if 0
2440static void 3383static void
2441embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3384embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2442{ 3385{
2443 ev_idle_stop (EV_A_ idle); 3386 ev_idle_stop (EV_A_ idle);
… …
2449{ 3392{
2450 if (expect_false (ev_is_active (w))) 3393 if (expect_false (ev_is_active (w)))
2451 return; 3394 return;
2452 3395
2453 { 3396 {
2454 struct ev_loop *loop = w->other; 3397 EV_P = w->other;
2455 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3398 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2456 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3399 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2457 } 3400 }
3401
3402 EV_FREQUENT_CHECK;
2458 3403
2459 ev_set_priority (&w->io, ev_priority (w)); 3404 ev_set_priority (&w->io, ev_priority (w));
2460 ev_io_start (EV_A_ &w->io); 3405 ev_io_start (EV_A_ &w->io);
2461 3406
2462 ev_prepare_init (&w->prepare, embed_prepare_cb); 3407 ev_prepare_init (&w->prepare, embed_prepare_cb);
2463 ev_set_priority (&w->prepare, EV_MINPRI); 3408 ev_set_priority (&w->prepare, EV_MINPRI);
2464 ev_prepare_start (EV_A_ &w->prepare); 3409 ev_prepare_start (EV_A_ &w->prepare);
2465 3410
3411 ev_fork_init (&w->fork, embed_fork_cb);
3412 ev_fork_start (EV_A_ &w->fork);
3413
2466 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3414 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2467 3415
2468 ev_start (EV_A_ (W)w, 1); 3416 ev_start (EV_A_ (W)w, 1);
3417
3418 EV_FREQUENT_CHECK;
2469} 3419}
2470 3420
2471void 3421void
2472ev_embed_stop (EV_P_ ev_embed *w) 3422ev_embed_stop (EV_P_ ev_embed *w)
2473{ 3423{
2474 clear_pending (EV_A_ (W)w); 3424 clear_pending (EV_A_ (W)w);
2475 if (expect_false (!ev_is_active (w))) 3425 if (expect_false (!ev_is_active (w)))
2476 return; 3426 return;
2477 3427
3428 EV_FREQUENT_CHECK;
3429
2478 ev_io_stop (EV_A_ &w->io); 3430 ev_io_stop (EV_A_ &w->io);
2479 ev_prepare_stop (EV_A_ &w->prepare); 3431 ev_prepare_stop (EV_A_ &w->prepare);
3432 ev_fork_stop (EV_A_ &w->fork);
2480 3433
2481 ev_stop (EV_A_ (W)w); 3434 ev_stop (EV_A_ (W)w);
3435
3436 EV_FREQUENT_CHECK;
2482} 3437}
2483#endif 3438#endif
2484 3439
2485#if EV_FORK_ENABLE 3440#if EV_FORK_ENABLE
2486void 3441void
2487ev_fork_start (EV_P_ ev_fork *w) 3442ev_fork_start (EV_P_ ev_fork *w)
2488{ 3443{
2489 if (expect_false (ev_is_active (w))) 3444 if (expect_false (ev_is_active (w)))
2490 return; 3445 return;
3446
3447 EV_FREQUENT_CHECK;
2491 3448
2492 ev_start (EV_A_ (W)w, ++forkcnt); 3449 ev_start (EV_A_ (W)w, ++forkcnt);
2493 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3450 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2494 forks [forkcnt - 1] = w; 3451 forks [forkcnt - 1] = w;
3452
3453 EV_FREQUENT_CHECK;
2495} 3454}
2496 3455
2497void 3456void
2498ev_fork_stop (EV_P_ ev_fork *w) 3457ev_fork_stop (EV_P_ ev_fork *w)
2499{ 3458{
2500 clear_pending (EV_A_ (W)w); 3459 clear_pending (EV_A_ (W)w);
2501 if (expect_false (!ev_is_active (w))) 3460 if (expect_false (!ev_is_active (w)))
2502 return; 3461 return;
2503 3462
3463 EV_FREQUENT_CHECK;
3464
2504 { 3465 {
2505 int active = ((W)w)->active; 3466 int active = ev_active (w);
3467
2506 forks [active - 1] = forks [--forkcnt]; 3468 forks [active - 1] = forks [--forkcnt];
2507 ((W)forks [active - 1])->active = active; 3469 ev_active (forks [active - 1]) = active;
2508 } 3470 }
2509 3471
2510 ev_stop (EV_A_ (W)w); 3472 ev_stop (EV_A_ (W)w);
3473
3474 EV_FREQUENT_CHECK;
2511} 3475}
2512#endif 3476#endif
2513 3477
2514#if EV_ASYNC_ENABLE 3478#if EV_ASYNC_ENABLE
2515void 3479void
… …
2517{ 3481{
2518 if (expect_false (ev_is_active (w))) 3482 if (expect_false (ev_is_active (w)))
2519 return; 3483 return;
2520 3484
2521 evpipe_init (EV_A); 3485 evpipe_init (EV_A);
3486
3487 EV_FREQUENT_CHECK;
2522 3488
2523 ev_start (EV_A_ (W)w, ++asynccnt); 3489 ev_start (EV_A_ (W)w, ++asynccnt);
2524 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 3490 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2525 asyncs [asynccnt - 1] = w; 3491 asyncs [asynccnt - 1] = w;
3492
3493 EV_FREQUENT_CHECK;
2526} 3494}
2527 3495
2528void 3496void
2529ev_async_stop (EV_P_ ev_async *w) 3497ev_async_stop (EV_P_ ev_async *w)
2530{ 3498{
2531 clear_pending (EV_A_ (W)w); 3499 clear_pending (EV_A_ (W)w);
2532 if (expect_false (!ev_is_active (w))) 3500 if (expect_false (!ev_is_active (w)))
2533 return; 3501 return;
2534 3502
3503 EV_FREQUENT_CHECK;
3504
2535 { 3505 {
2536 int active = ((W)w)->active; 3506 int active = ev_active (w);
3507
2537 asyncs [active - 1] = asyncs [--asynccnt]; 3508 asyncs [active - 1] = asyncs [--asynccnt];
2538 ((W)asyncs [active - 1])->active = active; 3509 ev_active (asyncs [active - 1]) = active;
2539 } 3510 }
2540 3511
2541 ev_stop (EV_A_ (W)w); 3512 ev_stop (EV_A_ (W)w);
3513
3514 EV_FREQUENT_CHECK;
2542} 3515}
2543 3516
2544void 3517void
2545ev_async_send (EV_P_ ev_async *w) 3518ev_async_send (EV_P_ ev_async *w)
2546{ 3519{
2547 w->sent = 1; 3520 w->sent = 1;
2548 evpipe_write (EV_A_ &gotasync); 3521 evpipe_write (EV_A_ &async_pending);
2549} 3522}
2550#endif 3523#endif
2551 3524
2552/*****************************************************************************/ 3525/*****************************************************************************/
2553 3526
… …
2563once_cb (EV_P_ struct ev_once *once, int revents) 3536once_cb (EV_P_ struct ev_once *once, int revents)
2564{ 3537{
2565 void (*cb)(int revents, void *arg) = once->cb; 3538 void (*cb)(int revents, void *arg) = once->cb;
2566 void *arg = once->arg; 3539 void *arg = once->arg;
2567 3540
2568 ev_io_stop (EV_A_ &once->io); 3541 ev_io_stop (EV_A_ &once->io);
2569 ev_timer_stop (EV_A_ &once->to); 3542 ev_timer_stop (EV_A_ &once->to);
2570 ev_free (once); 3543 ev_free (once);
2571 3544
2572 cb (revents, arg); 3545 cb (revents, arg);
2573} 3546}
2574 3547
2575static void 3548static void
2576once_cb_io (EV_P_ ev_io *w, int revents) 3549once_cb_io (EV_P_ ev_io *w, int revents)
2577{ 3550{
2578 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3551 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3552
3553 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2579} 3554}
2580 3555
2581static void 3556static void
2582once_cb_to (EV_P_ ev_timer *w, int revents) 3557once_cb_to (EV_P_ ev_timer *w, int revents)
2583{ 3558{
2584 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3559 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3560
3561 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2585} 3562}
2586 3563
2587void 3564void
2588ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3565ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2589{ 3566{
… …
2611 ev_timer_set (&once->to, timeout, 0.); 3588 ev_timer_set (&once->to, timeout, 0.);
2612 ev_timer_start (EV_A_ &once->to); 3589 ev_timer_start (EV_A_ &once->to);
2613 } 3590 }
2614} 3591}
2615 3592
3593/*****************************************************************************/
3594
3595#if EV_WALK_ENABLE
3596void
3597ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3598{
3599 int i, j;
3600 ev_watcher_list *wl, *wn;
3601
3602 if (types & (EV_IO | EV_EMBED))
3603 for (i = 0; i < anfdmax; ++i)
3604 for (wl = anfds [i].head; wl; )
3605 {
3606 wn = wl->next;
3607
3608#if EV_EMBED_ENABLE
3609 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3610 {
3611 if (types & EV_EMBED)
3612 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3613 }
3614 else
3615#endif
3616#if EV_USE_INOTIFY
3617 if (ev_cb ((ev_io *)wl) == infy_cb)
3618 ;
3619 else
3620#endif
3621 if ((ev_io *)wl != &pipe_w)
3622 if (types & EV_IO)
3623 cb (EV_A_ EV_IO, wl);
3624
3625 wl = wn;
3626 }
3627
3628 if (types & (EV_TIMER | EV_STAT))
3629 for (i = timercnt + HEAP0; i-- > HEAP0; )
3630#if EV_STAT_ENABLE
3631 /*TODO: timer is not always active*/
3632 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3633 {
3634 if (types & EV_STAT)
3635 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3636 }
3637 else
3638#endif
3639 if (types & EV_TIMER)
3640 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3641
3642#if EV_PERIODIC_ENABLE
3643 if (types & EV_PERIODIC)
3644 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3645 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3646#endif
3647
3648#if EV_IDLE_ENABLE
3649 if (types & EV_IDLE)
3650 for (j = NUMPRI; i--; )
3651 for (i = idlecnt [j]; i--; )
3652 cb (EV_A_ EV_IDLE, idles [j][i]);
3653#endif
3654
3655#if EV_FORK_ENABLE
3656 if (types & EV_FORK)
3657 for (i = forkcnt; i--; )
3658 if (ev_cb (forks [i]) != embed_fork_cb)
3659 cb (EV_A_ EV_FORK, forks [i]);
3660#endif
3661
3662#if EV_ASYNC_ENABLE
3663 if (types & EV_ASYNC)
3664 for (i = asynccnt; i--; )
3665 cb (EV_A_ EV_ASYNC, asyncs [i]);
3666#endif
3667
3668 if (types & EV_PREPARE)
3669 for (i = preparecnt; i--; )
3670#if EV_EMBED_ENABLE
3671 if (ev_cb (prepares [i]) != embed_prepare_cb)
3672#endif
3673 cb (EV_A_ EV_PREPARE, prepares [i]);
3674
3675 if (types & EV_CHECK)
3676 for (i = checkcnt; i--; )
3677 cb (EV_A_ EV_CHECK, checks [i]);
3678
3679 if (types & EV_SIGNAL)
3680 for (i = 0; i < EV_NSIG - 1; ++i)
3681 for (wl = signals [i].head; wl; )
3682 {
3683 wn = wl->next;
3684 cb (EV_A_ EV_SIGNAL, wl);
3685 wl = wn;
3686 }
3687
3688 if (types & EV_CHILD)
3689 for (i = EV_PID_HASHSIZE; i--; )
3690 for (wl = childs [i]; wl; )
3691 {
3692 wn = wl->next;
3693 cb (EV_A_ EV_CHILD, wl);
3694 wl = wn;
3695 }
3696/* EV_STAT 0x00001000 /* stat data changed */
3697/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3698}
3699#endif
3700
2616#if EV_MULTIPLICITY 3701#if EV_MULTIPLICITY
2617 #include "ev_wrap.h" 3702 #include "ev_wrap.h"
2618#endif 3703#endif
2619 3704
2620#ifdef __cplusplus 3705#ifdef __cplusplus

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