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Comparing libev/ev.c (file contents):
Revision 1.240 by root, Thu May 8 21:21:41 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
274# ifdef __cplusplus 405# ifdef __cplusplus
275extern "C" { 406extern "C" {
276# endif 407# endif
277int eventfd (unsigned int initval, int flags); 408int eventfd (unsigned int initval, int flags);
278# ifdef __cplusplus 409# ifdef __cplusplus
279} 410}
280# endif 411# endif
281#endif 412#endif
282 413
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
442
283/**/ 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
284 450
285/* 451/*
286 * This is used to avoid floating point rounding problems. 452 * This is used to avoid floating point rounding problems.
287 * It is added to ev_rt_now when scheduling periodics 453 * It is added to ev_rt_now when scheduling periodics
288 * to ensure progress, time-wise, even when rounding 454 * to ensure progress, time-wise, even when rounding
… …
292 */ 458 */
293#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 459#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
294 460
295#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) */
296#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) */
297/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
298 463
299#if __GNUC__ >= 4 464#if __GNUC__ >= 4
300# define expect(expr,value) __builtin_expect ((expr),(value)) 465# define expect(expr,value) __builtin_expect ((expr),(value))
301# define noinline __attribute__ ((noinline)) 466# define noinline __attribute__ ((noinline))
302#else 467#else
… …
315# define inline_speed static noinline 480# define inline_speed static noinline
316#else 481#else
317# define inline_speed static inline 482# define inline_speed static inline
318#endif 483#endif
319 484
320#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
321#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 490# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
491#endif
322 492
323#define EMPTY /* required for microsofts broken pseudo-c compiler */ 493#define EMPTY /* required for microsofts broken pseudo-c compiler */
324#define EMPTY2(a,b) /* used to suppress some warnings */ 494#define EMPTY2(a,b) /* used to suppress some warnings */
325 495
326typedef ev_watcher *W; 496typedef ev_watcher *W;
… …
328typedef ev_watcher_time *WT; 498typedef ev_watcher_time *WT;
329 499
330#define ev_active(w) ((W)(w))->active 500#define ev_active(w) ((W)(w))->active
331#define ev_at(w) ((WT)(w))->at 501#define ev_at(w) ((WT)(w))->at
332 502
333#if EV_USE_MONOTONIC 503#if EV_USE_REALTIME
334/* 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 */
335/* 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
336static 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)
337#endif 521#endif
338 522
339#ifdef _WIN32 523#ifdef _WIN32
340# include "ev_win32.c" 524# include "ev_win32.c"
341#endif 525#endif
… …
349{ 533{
350 syserr_cb = cb; 534 syserr_cb = cb;
351} 535}
352 536
353static void noinline 537static void noinline
354syserr (const char *msg) 538ev_syserr (const char *msg)
355{ 539{
356 if (!msg) 540 if (!msg)
357 msg = "(libev) system error"; 541 msg = "(libev) system error";
358 542
359 if (syserr_cb) 543 if (syserr_cb)
… …
405#define ev_malloc(size) ev_realloc (0, (size)) 589#define ev_malloc(size) ev_realloc (0, (size))
406#define ev_free(ptr) ev_realloc ((ptr), 0) 590#define ev_free(ptr) ev_realloc ((ptr), 0)
407 591
408/*****************************************************************************/ 592/*****************************************************************************/
409 593
594/* set in reify when reification needed */
595#define EV_ANFD_REIFY 1
596
597/* file descriptor info structure */
410typedef struct 598typedef struct
411{ 599{
412 WL head; 600 WL head;
413 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 */
414 unsigned char reify; 604 unsigned char unused;
605#if EV_USE_EPOLL
606 unsigned int egen; /* generation counter to counter epoll bugs */
607#endif
415#if EV_SELECT_IS_WINSOCKET 608#if EV_SELECT_IS_WINSOCKET
416 SOCKET handle; 609 SOCKET handle;
417#endif 610#endif
418} ANFD; 611} ANFD;
419 612
613/* stores the pending event set for a given watcher */
420typedef struct 614typedef struct
421{ 615{
422 W w; 616 W w;
423 int events; 617 int events; /* the pending event set for the given watcher */
424} ANPENDING; 618} ANPENDING;
425 619
426#if EV_USE_INOTIFY 620#if EV_USE_INOTIFY
621/* hash table entry per inotify-id */
427typedef struct 622typedef struct
428{ 623{
429 WL head; 624 WL head;
430} 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)
431#endif 646#endif
432 647
433#if EV_MULTIPLICITY 648#if EV_MULTIPLICITY
434 649
435 struct ev_loop 650 struct ev_loop
… …
454 669
455 static int ev_default_loop_ptr; 670 static int ev_default_loop_ptr;
456 671
457#endif 672#endif
458 673
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
459/*****************************************************************************/ 686/*****************************************************************************/
460 687
688#ifndef EV_HAVE_EV_TIME
461ev_tstamp 689ev_tstamp
462ev_time (void) 690ev_time (void)
463{ 691{
464#if EV_USE_REALTIME 692#if EV_USE_REALTIME
693 if (expect_true (have_realtime))
694 {
465 struct timespec ts; 695 struct timespec ts;
466 clock_gettime (CLOCK_REALTIME, &ts); 696 clock_gettime (CLOCK_REALTIME, &ts);
467 return ts.tv_sec + ts.tv_nsec * 1e-9; 697 return ts.tv_sec + ts.tv_nsec * 1e-9;
468#else 698 }
699#endif
700
469 struct timeval tv; 701 struct timeval tv;
470 gettimeofday (&tv, 0); 702 gettimeofday (&tv, 0);
471 return tv.tv_sec + tv.tv_usec * 1e-6; 703 return tv.tv_sec + tv.tv_usec * 1e-6;
472#endif
473} 704}
705#endif
474 706
475ev_tstamp inline_size 707inline_size ev_tstamp
476get_clock (void) 708get_clock (void)
477{ 709{
478#if EV_USE_MONOTONIC 710#if EV_USE_MONOTONIC
479 if (expect_true (have_monotonic)) 711 if (expect_true (have_monotonic))
480 { 712 {
… …
513 struct timeval tv; 745 struct timeval tv;
514 746
515 tv.tv_sec = (time_t)delay; 747 tv.tv_sec = (time_t)delay;
516 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 748 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
517 749
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 */
518 select (0, 0, 0, 0, &tv); 753 select (0, 0, 0, 0, &tv);
519#endif 754#endif
520 } 755 }
521} 756}
522 757
523/*****************************************************************************/ 758/*****************************************************************************/
524 759
525#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 760#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
526 761
527int inline_size 762/* find a suitable new size for the given array, */
763/* hopefully by rounding to a ncie-to-malloc size */
764inline_size int
528array_nextsize (int elem, int cur, int cnt) 765array_nextsize (int elem, int cur, int cnt)
529{ 766{
530 int ncur = cur + 1; 767 int ncur = cur + 1;
531 768
532 do 769 do
… …
549array_realloc (int elem, void *base, int *cur, int cnt) 786array_realloc (int elem, void *base, int *cur, int cnt)
550{ 787{
551 *cur = array_nextsize (elem, *cur, cnt); 788 *cur = array_nextsize (elem, *cur, cnt);
552 return ev_realloc (base, elem * *cur); 789 return ev_realloc (base, elem * *cur);
553} 790}
791
792#define array_init_zero(base,count) \
793 memset ((void *)(base), 0, sizeof (*(base)) * (count))
554 794
555#define array_needsize(type,base,cur,cnt,init) \ 795#define array_needsize(type,base,cur,cnt,init) \
556 if (expect_false ((cnt) > (cur))) \ 796 if (expect_false ((cnt) > (cur))) \
557 { \ 797 { \
558 int ocur_ = (cur); \ 798 int ocur_ = (cur); \
… …
570 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 810 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
571 } 811 }
572#endif 812#endif
573 813
574#define array_free(stem, idx) \ 814#define array_free(stem, idx) \
575 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
576 816
577/*****************************************************************************/ 817/*****************************************************************************/
818
819/* dummy callback for pending events */
820static void noinline
821pendingcb (EV_P_ ev_prepare *w, int revents)
822{
823}
578 824
579void noinline 825void noinline
580ev_feed_event (EV_P_ void *w, int revents) 826ev_feed_event (EV_P_ void *w, int revents)
581{ 827{
582 W w_ = (W)w; 828 W w_ = (W)w;
… …
591 pendings [pri][w_->pending - 1].w = w_; 837 pendings [pri][w_->pending - 1].w = w_;
592 pendings [pri][w_->pending - 1].events = revents; 838 pendings [pri][w_->pending - 1].events = revents;
593 } 839 }
594} 840}
595 841
596void 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
597queue_events (EV_P_ W *events, int eventcnt, int type) 858queue_events (EV_P_ W *events, int eventcnt, int type)
598{ 859{
599 int i; 860 int i;
600 861
601 for (i = 0; i < eventcnt; ++i) 862 for (i = 0; i < eventcnt; ++i)
602 ev_feed_event (EV_A_ events [i], type); 863 ev_feed_event (EV_A_ events [i], type);
603} 864}
604 865
605/*****************************************************************************/ 866/*****************************************************************************/
606 867
607void inline_size 868inline_speed void
608anfds_init (ANFD *base, int count)
609{
610 while (count--)
611 {
612 base->head = 0;
613 base->events = EV_NONE;
614 base->reify = 0;
615
616 ++base;
617 }
618}
619
620void inline_speed
621fd_event (EV_P_ int fd, int revents) 869fd_event_nc (EV_P_ int fd, int revents)
622{ 870{
623 ANFD *anfd = anfds + fd; 871 ANFD *anfd = anfds + fd;
624 ev_io *w; 872 ev_io *w;
625 873
626 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)
… …
630 if (ev) 878 if (ev)
631 ev_feed_event (EV_A_ (W)w, ev); 879 ev_feed_event (EV_A_ (W)w, ev);
632 } 880 }
633} 881}
634 882
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
635void 894void
636ev_feed_fd_event (EV_P_ int fd, int revents) 895ev_feed_fd_event (EV_P_ int fd, int revents)
637{ 896{
638 if (fd >= 0 && fd < anfdmax) 897 if (fd >= 0 && fd < anfdmax)
639 fd_event (EV_A_ fd, revents); 898 fd_event_nc (EV_A_ fd, revents);
640} 899}
641 900
642void inline_size 901/* make sure the external fd watch events are in-sync */
902/* with the kernel/libev internal state */
903inline_size void
643fd_reify (EV_P) 904fd_reify (EV_P)
644{ 905{
645 int i; 906 int i;
646 907
647 for (i = 0; i < fdchangecnt; ++i) 908 for (i = 0; i < fdchangecnt; ++i)
… …
656 events |= (unsigned char)w->events; 917 events |= (unsigned char)w->events;
657 918
658#if EV_SELECT_IS_WINSOCKET 919#if EV_SELECT_IS_WINSOCKET
659 if (events) 920 if (events)
660 { 921 {
661 unsigned long argp; 922 unsigned long arg;
662 #ifdef EV_FD_TO_WIN32_HANDLE
663 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 923 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
664 #else
665 anfd->handle = _get_osfhandle (fd);
666 #endif
667 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));
668 } 925 }
669#endif 926#endif
670 927
671 { 928 {
672 unsigned char o_events = anfd->events; 929 unsigned char o_events = anfd->events;
673 unsigned char o_reify = anfd->reify; 930 unsigned char o_reify = anfd->reify;
674 931
675 anfd->reify = 0; 932 anfd->reify = 0;
676 anfd->events = events; 933 anfd->events = events;
677 934
678 if (o_events != events || o_reify & EV_IOFDSET) 935 if (o_events != events || o_reify & EV__IOFDSET)
679 backend_modify (EV_A_ fd, o_events, events); 936 backend_modify (EV_A_ fd, o_events, events);
680 } 937 }
681 } 938 }
682 939
683 fdchangecnt = 0; 940 fdchangecnt = 0;
684} 941}
685 942
686void inline_size 943/* something about the given fd changed */
944inline_size void
687fd_change (EV_P_ int fd, int flags) 945fd_change (EV_P_ int fd, int flags)
688{ 946{
689 unsigned char reify = anfds [fd].reify; 947 unsigned char reify = anfds [fd].reify;
690 anfds [fd].reify |= flags; 948 anfds [fd].reify |= flags;
691 949
… …
695 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 953 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
696 fdchanges [fdchangecnt - 1] = fd; 954 fdchanges [fdchangecnt - 1] = fd;
697 } 955 }
698} 956}
699 957
700void inline_speed 958/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
959inline_speed void
701fd_kill (EV_P_ int fd) 960fd_kill (EV_P_ int fd)
702{ 961{
703 ev_io *w; 962 ev_io *w;
704 963
705 while ((w = (ev_io *)anfds [fd].head)) 964 while ((w = (ev_io *)anfds [fd].head))
… …
707 ev_io_stop (EV_A_ w); 966 ev_io_stop (EV_A_ w);
708 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);
709 } 968 }
710} 969}
711 970
712int inline_size 971/* check whether the given fd is atcually valid, for error recovery */
972inline_size int
713fd_valid (int fd) 973fd_valid (int fd)
714{ 974{
715#ifdef _WIN32 975#ifdef _WIN32
716 return _get_osfhandle (fd) != -1; 976 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
717#else 977#else
718 return fcntl (fd, F_GETFD) != -1; 978 return fcntl (fd, F_GETFD) != -1;
719#endif 979#endif
720} 980}
721 981
… …
725{ 985{
726 int fd; 986 int fd;
727 987
728 for (fd = 0; fd < anfdmax; ++fd) 988 for (fd = 0; fd < anfdmax; ++fd)
729 if (anfds [fd].events) 989 if (anfds [fd].events)
730 if (!fd_valid (fd) == -1 && errno == EBADF) 990 if (!fd_valid (fd) && errno == EBADF)
731 fd_kill (EV_A_ fd); 991 fd_kill (EV_A_ fd);
732} 992}
733 993
734/* 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 */
735static void noinline 995static void noinline
… …
739 999
740 for (fd = anfdmax; fd--; ) 1000 for (fd = anfdmax; fd--; )
741 if (anfds [fd].events) 1001 if (anfds [fd].events)
742 { 1002 {
743 fd_kill (EV_A_ fd); 1003 fd_kill (EV_A_ fd);
744 return; 1004 break;
745 } 1005 }
746} 1006}
747 1007
748/* 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 */
749static void noinline 1009static void noinline
… …
753 1013
754 for (fd = 0; fd < anfdmax; ++fd) 1014 for (fd = 0; fd < anfdmax; ++fd)
755 if (anfds [fd].events) 1015 if (anfds [fd].events)
756 { 1016 {
757 anfds [fd].events = 0; 1017 anfds [fd].events = 0;
1018 anfds [fd].emask = 0;
758 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1019 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
759 } 1020 }
760} 1021}
761 1022
762/*****************************************************************************/ 1023/*****************************************************************************/
1024
1025/*
1026 * the heap functions want a real array index. array index 0 uis guaranteed to not
1027 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1028 * the branching factor of the d-tree.
1029 */
763 1030
764/* 1031/*
765 * at the moment we allow libev the luxury of two heaps, 1032 * at the moment we allow libev the luxury of two heaps,
766 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap 1033 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
767 * which is more cache-efficient. 1034 * which is more cache-efficient.
768 * the difference is about 5% with 50000+ watchers. 1035 * the difference is about 5% with 50000+ watchers.
769 */ 1036 */
770#define USE_4HEAP !EV_MINIMAL
771#if USE_4HEAP 1037#if EV_USE_4HEAP
772 1038
773#define DHEAP 4 1039#define DHEAP 4
774#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 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))
775 1043
776/* towards the root */ 1044/* away from the root */
777void inline_speed 1045inline_speed void
778upheap (WT *heap, int k) 1046downheap (ANHE *heap, int N, int k)
779{ 1047{
780 WT w = heap [k]; 1048 ANHE he = heap [k];
781 ev_tstamp w_at = w->at; 1049 ANHE *E = heap + N + HEAP0;
782 1050
783 for (;;) 1051 for (;;)
784 { 1052 {
785 int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
786
787 if (p == k || heap [p]->at <= w_at)
788 break;
789
790 heap [k] = heap [p];
791 ev_active (heap [k]) = k;
792 k = p;
793 }
794
795 heap [k] = w;
796 ev_active (heap [k]) = k;
797}
798
799/* away from the root */
800void inline_speed
801downheap (WT *heap, int N, int k)
802{
803 WT w = heap [k];
804 WT *E = heap + N + HEAP0;
805
806 for (;;)
807 {
808 ev_tstamp minat; 1053 ev_tstamp minat;
809 WT *minpos; 1054 ANHE *minpos;
810 WT *pos = heap + DHEAP * (k - HEAP0) + HEAP0; 1055 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
811 1056
812 // find minimum child 1057 /* find minimum child */
813 if (expect_true (pos + DHEAP - 1 < E)) 1058 if (expect_true (pos + DHEAP - 1 < E))
814 { 1059 {
815 /* fast path */ (minpos = pos + 0), (minat = (*minpos)->at); 1060 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
816 if (pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at); 1061 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
817 if (pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at); 1062 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
818 if (pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at); 1063 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
819 } 1064 }
820 else if (pos < E) 1065 else if (pos < E)
821 { 1066 {
822 /* slow path */ (minpos = pos + 0), (minat = (*minpos)->at); 1067 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
823 if (pos + 1 < E && pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at); 1068 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
824 if (pos + 2 < E && pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at); 1069 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
825 if (pos + 3 < E && pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at); 1070 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
826 } 1071 }
827 else 1072 else
828 break; 1073 break;
829 1074
830 if (w->at <= minat) 1075 if (ANHE_at (he) <= minat)
831 break; 1076 break;
832 1077
833 ev_active (*minpos) = k;
834 heap [k] = *minpos; 1078 heap [k] = *minpos;
1079 ev_active (ANHE_w (*minpos)) = k;
835 1080
836 k = minpos - heap; 1081 k = minpos - heap;
837 } 1082 }
838 1083
839 heap [k] = w; 1084 heap [k] = he;
840 ev_active (heap [k]) = k; 1085 ev_active (ANHE_w (he)) = k;
841} 1086}
842 1087
843#else // 4HEAP 1088#else /* 4HEAP */
844 1089
845#define HEAP0 1 1090#define HEAP0 1
1091#define HPARENT(k) ((k) >> 1)
1092#define UPHEAP_DONE(p,k) (!(p))
846 1093
847/* towards the root */ 1094/* away from the root */
848void inline_speed 1095inline_speed void
849upheap (WT *heap, int k) 1096downheap (ANHE *heap, int N, int k)
850{ 1097{
851 WT w = heap [k]; 1098 ANHE he = heap [k];
852 1099
853 for (;;) 1100 for (;;)
854 { 1101 {
855 int p = k >> 1; 1102 int c = k << 1;
856 1103
857 /* maybe we could use a dummy element at heap [0]? */ 1104 if (c >= N + HEAP0)
858 if (!p || heap [p]->at <= w->at)
859 break; 1105 break;
860 1106
861 heap [k] = heap [p]; 1107 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
862 ev_active (heap [k]) = k; 1108 ? 1 : 0;
863 k = p;
864 }
865 1109
866 heap [k] = w; 1110 if (ANHE_at (he) <= ANHE_at (heap [c]))
867 ev_active (heap [k]) = k;
868}
869
870/* away from the root */
871void inline_speed
872downheap (WT *heap, int N, int k)
873{
874 WT w = heap [k];
875
876 for (;;)
877 {
878 int c = k << 1;
879
880 if (c > N)
881 break; 1111 break;
882 1112
883 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
884 ? 1 : 0;
885
886 if (w->at <= heap [c]->at)
887 break;
888
889 heap [k] = heap [c]; 1113 heap [k] = heap [c];
890 ((W)heap [k])->active = k; 1114 ev_active (ANHE_w (heap [k])) = k;
891 1115
892 k = c; 1116 k = c;
893 } 1117 }
894 1118
895 heap [k] = w; 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
1137 heap [k] = heap [p];
896 ev_active (heap [k]) = k; 1138 ev_active (ANHE_w (heap [k])) = k;
897} 1139 k = p;
898#endif 1140 }
899 1141
900void inline_size 1142 heap [k] = he;
1143 ev_active (ANHE_w (he)) = k;
1144}
1145
1146/* move an element suitably so it is in a correct place */
1147inline_size void
901adjustheap (WT *heap, int N, int k) 1148adjustheap (ANHE *heap, int N, int k)
902{ 1149{
1150 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
903 upheap (heap, k); 1151 upheap (heap, k);
1152 else
904 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);
905} 1166}
906 1167
907/*****************************************************************************/ 1168/*****************************************************************************/
908 1169
1170/* associate signal watchers to a signal signal */
909typedef struct 1171typedef struct
910{ 1172{
1173 EV_ATOMIC_T pending;
1174#if EV_MULTIPLICITY
1175 EV_P;
1176#endif
911 WL head; 1177 WL head;
912 EV_ATOMIC_T gotsig;
913} ANSIG; 1178} ANSIG;
914 1179
915static ANSIG *signals; 1180static ANSIG signals [EV_NSIG - 1];
916static int signalmax;
917
918static EV_ATOMIC_T gotsig;
919
920void inline_size
921signals_init (ANSIG *base, int count)
922{
923 while (count--)
924 {
925 base->head = 0;
926 base->gotsig = 0;
927
928 ++base;
929 }
930}
931 1181
932/*****************************************************************************/ 1182/*****************************************************************************/
933 1183
934void inline_speed 1184/* used to prepare libev internal fd's */
1185/* this is not fork-safe */
1186inline_speed void
935fd_intern (int fd) 1187fd_intern (int fd)
936{ 1188{
937#ifdef _WIN32 1189#ifdef _WIN32
938 int arg = 1; 1190 unsigned long arg = 1;
939 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1191 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
940#else 1192#else
941 fcntl (fd, F_SETFD, FD_CLOEXEC); 1193 fcntl (fd, F_SETFD, FD_CLOEXEC);
942 fcntl (fd, F_SETFL, O_NONBLOCK); 1194 fcntl (fd, F_SETFL, O_NONBLOCK);
943#endif 1195#endif
944} 1196}
945 1197
946static void noinline 1198static void noinline
947evpipe_init (EV_P) 1199evpipe_init (EV_P)
948{ 1200{
949 if (!ev_is_active (&pipeev)) 1201 if (!ev_is_active (&pipe_w))
950 { 1202 {
951#if EV_USE_EVENTFD 1203#if EV_USE_EVENTFD
1204 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1205 if (evfd < 0 && errno == EINVAL)
952 if ((evfd = eventfd (0, 0)) >= 0) 1206 evfd = eventfd (0, 0);
1207
1208 if (evfd >= 0)
953 { 1209 {
954 evpipe [0] = -1; 1210 evpipe [0] = -1;
955 fd_intern (evfd); 1211 fd_intern (evfd); /* doing it twice doesn't hurt */
956 ev_io_set (&pipeev, evfd, EV_READ); 1212 ev_io_set (&pipe_w, evfd, EV_READ);
957 } 1213 }
958 else 1214 else
959#endif 1215#endif
960 { 1216 {
961 while (pipe (evpipe)) 1217 while (pipe (evpipe))
962 syserr ("(libev) error creating signal/async pipe"); 1218 ev_syserr ("(libev) error creating signal/async pipe");
963 1219
964 fd_intern (evpipe [0]); 1220 fd_intern (evpipe [0]);
965 fd_intern (evpipe [1]); 1221 fd_intern (evpipe [1]);
966 ev_io_set (&pipeev, evpipe [0], EV_READ); 1222 ev_io_set (&pipe_w, evpipe [0], EV_READ);
967 } 1223 }
968 1224
969 ev_io_start (EV_A_ &pipeev); 1225 ev_io_start (EV_A_ &pipe_w);
970 ev_unref (EV_A); /* watcher should not keep loop alive */ 1226 ev_unref (EV_A); /* watcher should not keep loop alive */
971 } 1227 }
972} 1228}
973 1229
974void inline_size 1230inline_size void
975evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1231evpipe_write (EV_P_ EV_ATOMIC_T *flag)
976{ 1232{
977 if (!*flag) 1233 if (!*flag)
978 { 1234 {
979 int old_errno = errno; /* save errno because write might clobber it */ 1235 int old_errno = errno; /* save errno because write might clobber it */
… …
992 1248
993 errno = old_errno; 1249 errno = old_errno;
994 } 1250 }
995} 1251}
996 1252
1253/* called whenever the libev signal pipe */
1254/* got some events (signal, async) */
997static void 1255static void
998pipecb (EV_P_ ev_io *iow, int revents) 1256pipecb (EV_P_ ev_io *iow, int revents)
999{ 1257{
1258 int i;
1259
1000#if EV_USE_EVENTFD 1260#if EV_USE_EVENTFD
1001 if (evfd >= 0) 1261 if (evfd >= 0)
1002 { 1262 {
1003 uint64_t counter; 1263 uint64_t counter;
1004 read (evfd, &counter, sizeof (uint64_t)); 1264 read (evfd, &counter, sizeof (uint64_t));
… …
1008 { 1268 {
1009 char dummy; 1269 char dummy;
1010 read (evpipe [0], &dummy, 1); 1270 read (evpipe [0], &dummy, 1);
1011 } 1271 }
1012 1272
1013 if (gotsig && ev_is_default_loop (EV_A)) 1273 if (sig_pending)
1014 { 1274 {
1015 int signum; 1275 sig_pending = 0;
1016 gotsig = 0;
1017 1276
1018 for (signum = signalmax; signum--; ) 1277 for (i = EV_NSIG - 1; i--; )
1019 if (signals [signum].gotsig) 1278 if (expect_false (signals [i].pending))
1020 ev_feed_signal_event (EV_A_ signum + 1); 1279 ev_feed_signal_event (EV_A_ i + 1);
1021 } 1280 }
1022 1281
1023#if EV_ASYNC_ENABLE 1282#if EV_ASYNC_ENABLE
1024 if (gotasync) 1283 if (async_pending)
1025 { 1284 {
1026 int i; 1285 async_pending = 0;
1027 gotasync = 0;
1028 1286
1029 for (i = asynccnt; i--; ) 1287 for (i = asynccnt; i--; )
1030 if (asyncs [i]->sent) 1288 if (asyncs [i]->sent)
1031 { 1289 {
1032 asyncs [i]->sent = 0; 1290 asyncs [i]->sent = 0;
… …
1040 1298
1041static void 1299static void
1042ev_sighandler (int signum) 1300ev_sighandler (int signum)
1043{ 1301{
1044#if EV_MULTIPLICITY 1302#if EV_MULTIPLICITY
1045 struct ev_loop *loop = &default_loop_struct; 1303 EV_P = signals [signum - 1].loop;
1046#endif 1304#endif
1047 1305
1048#if _WIN32 1306#ifdef _WIN32
1049 signal (signum, ev_sighandler); 1307 signal (signum, ev_sighandler);
1050#endif 1308#endif
1051 1309
1052 signals [signum - 1].gotsig = 1; 1310 signals [signum - 1].pending = 1;
1053 evpipe_write (EV_A_ &gotsig); 1311 evpipe_write (EV_A_ &sig_pending);
1054} 1312}
1055 1313
1056void noinline 1314void noinline
1057ev_feed_signal_event (EV_P_ int signum) 1315ev_feed_signal_event (EV_P_ int signum)
1058{ 1316{
1059 WL w; 1317 WL w;
1060 1318
1319 if (expect_false (signum <= 0 || signum > EV_NSIG))
1320 return;
1321
1322 --signum;
1323
1061#if EV_MULTIPLICITY 1324#if EV_MULTIPLICITY
1062 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 */
1063#endif 1326 /* or, likely more useful, feeding a signal nobody is waiting for */
1064 1327
1065 --signum; 1328 if (expect_false (signals [signum].loop != EV_A))
1066
1067 if (signum < 0 || signum >= signalmax)
1068 return; 1329 return;
1330#endif
1069 1331
1070 signals [signum].gotsig = 0; 1332 signals [signum].pending = 0;
1071 1333
1072 for (w = signals [signum].head; w; w = w->next) 1334 for (w = signals [signum].head; w; w = w->next)
1073 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1335 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1074} 1336}
1075 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
1076/*****************************************************************************/ 1358/*****************************************************************************/
1077 1359
1078static WL childs [EV_PID_HASHSIZE]; 1360static WL childs [EV_PID_HASHSIZE];
1079 1361
1080#ifndef _WIN32 1362#ifndef _WIN32
… …
1083 1365
1084#ifndef WIFCONTINUED 1366#ifndef WIFCONTINUED
1085# define WIFCONTINUED(status) 0 1367# define WIFCONTINUED(status) 0
1086#endif 1368#endif
1087 1369
1088void inline_speed 1370/* handle a single child status event */
1371inline_speed void
1089child_reap (EV_P_ int chain, int pid, int status) 1372child_reap (EV_P_ int chain, int pid, int status)
1090{ 1373{
1091 ev_child *w; 1374 ev_child *w;
1092 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1375 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1093 1376
… …
1106 1389
1107#ifndef WCONTINUED 1390#ifndef WCONTINUED
1108# define WCONTINUED 0 1391# define WCONTINUED 0
1109#endif 1392#endif
1110 1393
1394/* called on sigchld etc., calls waitpid */
1111static void 1395static void
1112childcb (EV_P_ ev_signal *sw, int revents) 1396childcb (EV_P_ ev_signal *sw, int revents)
1113{ 1397{
1114 int pid, status; 1398 int pid, status;
1115 1399
… …
1196 /* kqueue is borked on everything but netbsd apparently */ 1480 /* kqueue is borked on everything but netbsd apparently */
1197 /* 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 */
1198 flags &= ~EVBACKEND_KQUEUE; 1482 flags &= ~EVBACKEND_KQUEUE;
1199#endif 1483#endif
1200#ifdef __APPLE__ 1484#ifdef __APPLE__
1201 // flags &= ~EVBACKEND_KQUEUE; for documentation 1485 /* only select works correctly on that "unix-certified" platform */
1202 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 */
1203#endif 1488#endif
1204 1489
1205 return flags; 1490 return flags;
1206} 1491}
1207 1492
… …
1221ev_backend (EV_P) 1506ev_backend (EV_P)
1222{ 1507{
1223 return backend; 1508 return backend;
1224} 1509}
1225 1510
1511#if EV_MINIMAL < 2
1226unsigned int 1512unsigned int
1227ev_loop_count (EV_P) 1513ev_loop_count (EV_P)
1228{ 1514{
1229 return loop_count; 1515 return loop_count;
1230} 1516}
1231 1517
1518unsigned int
1519ev_loop_depth (EV_P)
1520{
1521 return loop_depth;
1522}
1523
1232void 1524void
1233ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1525ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1234{ 1526{
1235 io_blocktime = interval; 1527 io_blocktime = interval;
1236} 1528}
… …
1239ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1531ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1240{ 1532{
1241 timeout_blocktime = interval; 1533 timeout_blocktime = interval;
1242} 1534}
1243 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 */
1244static void noinline 1561static void noinline
1245loop_init (EV_P_ unsigned int flags) 1562loop_init (EV_P_ unsigned int flags)
1246{ 1563{
1247 if (!backend) 1564 if (!backend)
1248 { 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
1249#if EV_USE_MONOTONIC 1576#if EV_USE_MONOTONIC
1577 if (!have_monotonic)
1250 { 1578 {
1251 struct timespec ts; 1579 struct timespec ts;
1580
1252 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1581 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1253 have_monotonic = 1; 1582 have_monotonic = 1;
1254 } 1583 }
1255#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"));
1256 1596
1257 ev_rt_now = ev_time (); 1597 ev_rt_now = ev_time ();
1258 mn_now = get_clock (); 1598 mn_now = get_clock ();
1259 now_floor = mn_now; 1599 now_floor = mn_now;
1260 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
1261 1604
1262 io_blocktime = 0.; 1605 io_blocktime = 0.;
1263 timeout_blocktime = 0.; 1606 timeout_blocktime = 0.;
1264 backend = 0; 1607 backend = 0;
1265 backend_fd = -1; 1608 backend_fd = -1;
1266 gotasync = 0; 1609 sig_pending = 0;
1610#if EV_ASYNC_ENABLE
1611 async_pending = 0;
1612#endif
1267#if EV_USE_INOTIFY 1613#if EV_USE_INOTIFY
1268 fs_fd = -2; 1614 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1269#endif 1615#endif
1270 1616#if EV_USE_SIGNALFD
1271 /* pid check not overridable via env */ 1617 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1272#ifndef _WIN32
1273 if (flags & EVFLAG_FORKCHECK)
1274 curpid = getpid ();
1275#endif 1618#endif
1276
1277 if (!(flags & EVFLAG_NOENV)
1278 && !enable_secure ()
1279 && getenv ("LIBEV_FLAGS"))
1280 flags = atoi (getenv ("LIBEV_FLAGS"));
1281 1619
1282 if (!(flags & 0x0000ffffU)) 1620 if (!(flags & 0x0000ffffU))
1283 flags |= ev_recommended_backends (); 1621 flags |= ev_recommended_backends ();
1284 1622
1285#if EV_USE_PORT 1623#if EV_USE_PORT
… …
1296#endif 1634#endif
1297#if EV_USE_SELECT 1635#if EV_USE_SELECT
1298 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1636 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1299#endif 1637#endif
1300 1638
1639 ev_prepare_init (&pending_w, pendingcb);
1640
1301 ev_init (&pipeev, pipecb); 1641 ev_init (&pipe_w, pipecb);
1302 ev_set_priority (&pipeev, EV_MAXPRI); 1642 ev_set_priority (&pipe_w, EV_MAXPRI);
1303 } 1643 }
1304} 1644}
1305 1645
1646/* free up a loop structure */
1306static void noinline 1647static void noinline
1307loop_destroy (EV_P) 1648loop_destroy (EV_P)
1308{ 1649{
1309 int i; 1650 int i;
1310 1651
1311 if (ev_is_active (&pipeev)) 1652 if (ev_is_active (&pipe_w))
1312 { 1653 {
1313 ev_ref (EV_A); /* signal watcher */ 1654 /*ev_ref (EV_A);*/
1314 ev_io_stop (EV_A_ &pipeev); 1655 /*ev_io_stop (EV_A_ &pipe_w);*/
1315 1656
1316#if EV_USE_EVENTFD 1657#if EV_USE_EVENTFD
1317 if (evfd >= 0) 1658 if (evfd >= 0)
1318 close (evfd); 1659 close (evfd);
1319#endif 1660#endif
1320 1661
1321 if (evpipe [0] >= 0) 1662 if (evpipe [0] >= 0)
1322 { 1663 {
1323 close (evpipe [0]); 1664 EV_WIN32_CLOSE_FD (evpipe [0]);
1324 close (evpipe [1]); 1665 EV_WIN32_CLOSE_FD (evpipe [1]);
1325 } 1666 }
1326 } 1667 }
1668
1669#if EV_USE_SIGNALFD
1670 if (ev_is_active (&sigfd_w))
1671 close (sigfd);
1672#endif
1327 1673
1328#if EV_USE_INOTIFY 1674#if EV_USE_INOTIFY
1329 if (fs_fd >= 0) 1675 if (fs_fd >= 0)
1330 close (fs_fd); 1676 close (fs_fd);
1331#endif 1677#endif
… …
1355#if EV_IDLE_ENABLE 1701#if EV_IDLE_ENABLE
1356 array_free (idle, [i]); 1702 array_free (idle, [i]);
1357#endif 1703#endif
1358 } 1704 }
1359 1705
1360 ev_free (anfds); anfdmax = 0; 1706 ev_free (anfds); anfds = 0; anfdmax = 0;
1361 1707
1362 /* 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);
1363 array_free (fdchange, EMPTY); 1710 array_free (fdchange, EMPTY);
1364 array_free (timer, EMPTY); 1711 array_free (timer, EMPTY);
1365#if EV_PERIODIC_ENABLE 1712#if EV_PERIODIC_ENABLE
1366 array_free (periodic, EMPTY); 1713 array_free (periodic, EMPTY);
1367#endif 1714#endif
… …
1376 1723
1377 backend = 0; 1724 backend = 0;
1378} 1725}
1379 1726
1380#if EV_USE_INOTIFY 1727#if EV_USE_INOTIFY
1381void inline_size infy_fork (EV_P); 1728inline_size void infy_fork (EV_P);
1382#endif 1729#endif
1383 1730
1384void inline_size 1731inline_size void
1385loop_fork (EV_P) 1732loop_fork (EV_P)
1386{ 1733{
1387#if EV_USE_PORT 1734#if EV_USE_PORT
1388 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1735 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1389#endif 1736#endif
… …
1395#endif 1742#endif
1396#if EV_USE_INOTIFY 1743#if EV_USE_INOTIFY
1397 infy_fork (EV_A); 1744 infy_fork (EV_A);
1398#endif 1745#endif
1399 1746
1400 if (ev_is_active (&pipeev)) 1747 if (ev_is_active (&pipe_w))
1401 { 1748 {
1402 /* this "locks" the handlers against writing to the pipe */ 1749 /* this "locks" the handlers against writing to the pipe */
1403 /* while we modify the fd vars */ 1750 /* while we modify the fd vars */
1404 gotsig = 1; 1751 sig_pending = 1;
1405#if EV_ASYNC_ENABLE 1752#if EV_ASYNC_ENABLE
1406 gotasync = 1; 1753 async_pending = 1;
1407#endif 1754#endif
1408 1755
1409 ev_ref (EV_A); 1756 ev_ref (EV_A);
1410 ev_io_stop (EV_A_ &pipeev); 1757 ev_io_stop (EV_A_ &pipe_w);
1411 1758
1412#if EV_USE_EVENTFD 1759#if EV_USE_EVENTFD
1413 if (evfd >= 0) 1760 if (evfd >= 0)
1414 close (evfd); 1761 close (evfd);
1415#endif 1762#endif
1416 1763
1417 if (evpipe [0] >= 0) 1764 if (evpipe [0] >= 0)
1418 { 1765 {
1419 close (evpipe [0]); 1766 EV_WIN32_CLOSE_FD (evpipe [0]);
1420 close (evpipe [1]); 1767 EV_WIN32_CLOSE_FD (evpipe [1]);
1421 } 1768 }
1422 1769
1423 evpipe_init (EV_A); 1770 evpipe_init (EV_A);
1424 /* now iterate over everything, in case we missed something */ 1771 /* now iterate over everything, in case we missed something */
1425 pipecb (EV_A_ &pipeev, EV_READ); 1772 pipecb (EV_A_ &pipe_w, EV_READ);
1426 } 1773 }
1427 1774
1428 postfork = 0; 1775 postfork = 0;
1429} 1776}
1430 1777
1431#if EV_MULTIPLICITY 1778#if EV_MULTIPLICITY
1779
1432struct ev_loop * 1780struct ev_loop *
1433ev_loop_new (unsigned int flags) 1781ev_loop_new (unsigned int flags)
1434{ 1782{
1435 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));
1436 1784
1437 memset (loop, 0, sizeof (struct ev_loop)); 1785 memset (EV_A, 0, sizeof (struct ev_loop));
1438
1439 loop_init (EV_A_ flags); 1786 loop_init (EV_A_ flags);
1440 1787
1441 if (ev_backend (EV_A)) 1788 if (ev_backend (EV_A))
1442 return loop; 1789 return EV_A;
1443 1790
1444 return 0; 1791 return 0;
1445} 1792}
1446 1793
1447void 1794void
… …
1453 1800
1454void 1801void
1455ev_loop_fork (EV_P) 1802ev_loop_fork (EV_P)
1456{ 1803{
1457 postfork = 1; /* must be in line with ev_default_fork */ 1804 postfork = 1; /* must be in line with ev_default_fork */
1805}
1806#endif /* multiplicity */
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
1458} 1906}
1459#endif 1907#endif
1460 1908
1461#if EV_MULTIPLICITY 1909#if EV_MULTIPLICITY
1462struct ev_loop * 1910struct ev_loop *
… …
1467#endif 1915#endif
1468{ 1916{
1469 if (!ev_default_loop_ptr) 1917 if (!ev_default_loop_ptr)
1470 { 1918 {
1471#if EV_MULTIPLICITY 1919#if EV_MULTIPLICITY
1472 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1920 EV_P = ev_default_loop_ptr = &default_loop_struct;
1473#else 1921#else
1474 ev_default_loop_ptr = 1; 1922 ev_default_loop_ptr = 1;
1475#endif 1923#endif
1476 1924
1477 loop_init (EV_A_ flags); 1925 loop_init (EV_A_ flags);
… …
1494 1942
1495void 1943void
1496ev_default_destroy (void) 1944ev_default_destroy (void)
1497{ 1945{
1498#if EV_MULTIPLICITY 1946#if EV_MULTIPLICITY
1499 struct ev_loop *loop = ev_default_loop_ptr; 1947 EV_P = ev_default_loop_ptr;
1500#endif 1948#endif
1949
1950 ev_default_loop_ptr = 0;
1501 1951
1502#ifndef _WIN32 1952#ifndef _WIN32
1503 ev_ref (EV_A); /* child watcher */ 1953 ev_ref (EV_A); /* child watcher */
1504 ev_signal_stop (EV_A_ &childev); 1954 ev_signal_stop (EV_A_ &childev);
1505#endif 1955#endif
… …
1509 1959
1510void 1960void
1511ev_default_fork (void) 1961ev_default_fork (void)
1512{ 1962{
1513#if EV_MULTIPLICITY 1963#if EV_MULTIPLICITY
1514 struct ev_loop *loop = ev_default_loop_ptr; 1964 EV_P = ev_default_loop_ptr;
1515#endif 1965#endif
1516 1966
1517 if (backend)
1518 postfork = 1; /* must be in line with ev_loop_fork */ 1967 postfork = 1; /* must be in line with ev_loop_fork */
1519} 1968}
1520 1969
1521/*****************************************************************************/ 1970/*****************************************************************************/
1522 1971
1523void 1972void
1524ev_invoke (EV_P_ void *w, int revents) 1973ev_invoke (EV_P_ void *w, int revents)
1525{ 1974{
1526 EV_CB_INVOKE ((W)w, revents); 1975 EV_CB_INVOKE ((W)w, revents);
1527} 1976}
1528 1977
1529void inline_speed 1978unsigned int
1530call_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)
1531{ 1992{
1532 int pri; 1993 int pri;
1533 1994
1534 for (pri = NUMPRI; pri--; ) 1995 for (pri = NUMPRI; pri--; )
1535 while (pendingcnt [pri]) 1996 while (pendingcnt [pri])
1536 { 1997 {
1537 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1998 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1538 1999
1539 if (expect_true (p->w))
1540 {
1541 /*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 */
1542 2002
1543 p->w->pending = 0; 2003 p->w->pending = 0;
1544 EV_CB_INVOKE (p->w, p->events); 2004 EV_CB_INVOKE (p->w, p->events);
1545 } 2005 EV_FREQUENT_CHECK;
1546 } 2006 }
1547} 2007}
1548 2008
1549#if EV_IDLE_ENABLE 2009#if EV_IDLE_ENABLE
1550void inline_size 2010/* make idle watchers pending. this handles the "call-idle */
2011/* only when higher priorities are idle" logic */
2012inline_size void
1551idle_reify (EV_P) 2013idle_reify (EV_P)
1552{ 2014{
1553 if (expect_false (idleall)) 2015 if (expect_false (idleall))
1554 { 2016 {
1555 int pri; 2017 int pri;
… …
1567 } 2029 }
1568 } 2030 }
1569} 2031}
1570#endif 2032#endif
1571 2033
1572void inline_size 2034/* make timers pending */
2035inline_size void
1573timers_reify (EV_P) 2036timers_reify (EV_P)
1574{ 2037{
2038 EV_FREQUENT_CHECK;
2039
1575 while (timercnt && ev_at (timers [HEAP0]) <= mn_now) 2040 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1576 { 2041 {
1577 ev_timer *w = (ev_timer *)timers [HEAP0]; 2042 do
1578
1579 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1580
1581 /* first reschedule or stop timer */
1582 if (w->repeat)
1583 { 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
1584 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2055 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1585 2056
1586 ev_at (w) += w->repeat; 2057 ANHE_at_cache (timers [HEAP0]);
1587 if (ev_at (w) < mn_now)
1588 ev_at (w) = mn_now;
1589
1590 downheap (timers, timercnt, 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);
1591 } 2065 }
1592 else 2066 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1593 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1594 2067
1595 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 2068 feed_reverse_done (EV_A_ EV_TIMEOUT);
1596 } 2069 }
1597} 2070}
1598 2071
1599#if EV_PERIODIC_ENABLE 2072#if EV_PERIODIC_ENABLE
1600void inline_size 2073/* make periodics pending */
2074inline_size void
1601periodics_reify (EV_P) 2075periodics_reify (EV_P)
1602{ 2076{
2077 EV_FREQUENT_CHECK;
2078
1603 while (periodiccnt && ev_at (periodics [HEAP0]) <= ev_rt_now) 2079 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1604 { 2080 {
1605 ev_periodic *w = (ev_periodic *)periodics [HEAP0]; 2081 int feed_count = 0;
1606 2082
1607 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2083 do
1608
1609 /* first reschedule or stop timer */
1610 if (w->reschedule_cb)
1611 { 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 {
1612 ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON); 2092 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2093
1613 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now)); 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]);
1614 downheap (periodics, periodiccnt, 1); 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);
1615 } 2123 }
1616 else if (w->interval) 2124 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1617 {
1618 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1619 if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1620 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1621 downheap (periodics, periodiccnt, HEAP0);
1622 }
1623 else
1624 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1625 2125
1626 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2126 feed_reverse_done (EV_A_ EV_PERIODIC);
1627 } 2127 }
1628} 2128}
1629 2129
2130/* simply recalculate all periodics */
2131/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1630static void noinline 2132static void noinline
1631periodics_reschedule (EV_P) 2133periodics_reschedule (EV_P)
1632{ 2134{
1633 int i; 2135 int i;
1634 2136
1635 /* adjust periodics after time jump */ 2137 /* adjust periodics after time jump */
1636 for (i = 1; i <= periodiccnt; ++i) 2138 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1637 { 2139 {
1638 ev_periodic *w = (ev_periodic *)periodics [i]; 2140 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1639 2141
1640 if (w->reschedule_cb) 2142 if (w->reschedule_cb)
1641 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2143 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1642 else if (w->interval) 2144 else if (w->interval)
1643 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * 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)
1644 } 2161 {
1645 2162 ANHE *he = timers + i + HEAP0;
1646 /* now rebuild the heap */ 2163 ANHE_w (*he)->at += adjust;
1647 for (i = periodiccnt >> 1; --i; ) 2164 ANHE_at_cache (*he);
1648 downheap (periodics, periodiccnt, i + HEAP0); 2165 }
1649} 2166}
1650#endif
1651 2167
1652void inline_speed 2168/* fetch new monotonic and realtime times from the kernel */
2169/* also detect if there was a timejump, and act accordingly */
2170inline_speed void
1653time_update (EV_P_ ev_tstamp max_block) 2171time_update (EV_P_ ev_tstamp max_block)
1654{ 2172{
1655 int i;
1656
1657#if EV_USE_MONOTONIC 2173#if EV_USE_MONOTONIC
1658 if (expect_true (have_monotonic)) 2174 if (expect_true (have_monotonic))
1659 { 2175 {
2176 int i;
1660 ev_tstamp odiff = rtmn_diff; 2177 ev_tstamp odiff = rtmn_diff;
1661 2178
1662 mn_now = get_clock (); 2179 mn_now = get_clock ();
1663 2180
1664 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2181 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1690 ev_rt_now = ev_time (); 2207 ev_rt_now = ev_time ();
1691 mn_now = get_clock (); 2208 mn_now = get_clock ();
1692 now_floor = mn_now; 2209 now_floor = mn_now;
1693 } 2210 }
1694 2211
2212 /* no timer adjustment, as the monotonic clock doesn't jump */
2213 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1695# if EV_PERIODIC_ENABLE 2214# if EV_PERIODIC_ENABLE
1696 periodics_reschedule (EV_A); 2215 periodics_reschedule (EV_A);
1697# endif 2216# endif
1698 /* no timer adjustment, as the monotonic clock doesn't jump */
1699 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1700 } 2217 }
1701 else 2218 else
1702#endif 2219#endif
1703 { 2220 {
1704 ev_rt_now = ev_time (); 2221 ev_rt_now = ev_time ();
1705 2222
1706 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))
1707 { 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);
1708#if EV_PERIODIC_ENABLE 2227#if EV_PERIODIC_ENABLE
1709 periodics_reschedule (EV_A); 2228 periodics_reschedule (EV_A);
1710#endif 2229#endif
1711 /* adjust timers. this is easy, as the offset is the same for all of them */
1712 for (i = 1; i <= timercnt; ++i)
1713 ev_at (timers [i]) += ev_rt_now - mn_now;
1714 } 2230 }
1715 2231
1716 mn_now = ev_rt_now; 2232 mn_now = ev_rt_now;
1717 } 2233 }
1718} 2234}
1719 2235
1720void 2236void
1721ev_ref (EV_P)
1722{
1723 ++activecnt;
1724}
1725
1726void
1727ev_unref (EV_P)
1728{
1729 --activecnt;
1730}
1731
1732static int loop_done;
1733
1734void
1735ev_loop (EV_P_ int flags) 2237ev_loop (EV_P_ int flags)
1736{ 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
1737 loop_done = EVUNLOOP_CANCEL; 2245 loop_done = EVUNLOOP_CANCEL;
1738 2246
1739 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 */
1740 2248
1741 do 2249 do
1742 { 2250 {
2251#if EV_VERIFY >= 2
2252 ev_loop_verify (EV_A);
2253#endif
2254
1743#ifndef _WIN32 2255#ifndef _WIN32
1744 if (expect_false (curpid)) /* penalise the forking check even more */ 2256 if (expect_false (curpid)) /* penalise the forking check even more */
1745 if (expect_false (getpid () != curpid)) 2257 if (expect_false (getpid () != curpid))
1746 { 2258 {
1747 curpid = getpid (); 2259 curpid = getpid ();
… …
1753 /* we might have forked, so queue fork handlers */ 2265 /* we might have forked, so queue fork handlers */
1754 if (expect_false (postfork)) 2266 if (expect_false (postfork))
1755 if (forkcnt) 2267 if (forkcnt)
1756 { 2268 {
1757 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2269 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1758 call_pending (EV_A); 2270 EV_INVOKE_PENDING;
1759 } 2271 }
1760#endif 2272#endif
1761 2273
1762 /* queue prepare watchers (and execute them) */ 2274 /* queue prepare watchers (and execute them) */
1763 if (expect_false (preparecnt)) 2275 if (expect_false (preparecnt))
1764 { 2276 {
1765 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2277 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1766 call_pending (EV_A); 2278 EV_INVOKE_PENDING;
1767 } 2279 }
1768 2280
1769 if (expect_false (!activecnt)) 2281 if (expect_false (loop_done))
1770 break; 2282 break;
1771 2283
1772 /* we might have forked, so reify kernel state if necessary */ 2284 /* we might have forked, so reify kernel state if necessary */
1773 if (expect_false (postfork)) 2285 if (expect_false (postfork))
1774 loop_fork (EV_A); 2286 loop_fork (EV_A);
… …
1781 ev_tstamp waittime = 0.; 2293 ev_tstamp waittime = 0.;
1782 ev_tstamp sleeptime = 0.; 2294 ev_tstamp sleeptime = 0.;
1783 2295
1784 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2296 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1785 { 2297 {
2298 /* remember old timestamp for io_blocktime calculation */
2299 ev_tstamp prev_mn_now = mn_now;
2300
1786 /* update time to cancel out callback processing overhead */ 2301 /* update time to cancel out callback processing overhead */
1787 time_update (EV_A_ 1e100); 2302 time_update (EV_A_ 1e100);
1788 2303
1789 waittime = MAX_BLOCKTIME; 2304 waittime = MAX_BLOCKTIME;
1790 2305
1791 if (timercnt) 2306 if (timercnt)
1792 { 2307 {
1793 ev_tstamp to = ev_at (timers [HEAP0]) - mn_now + backend_fudge; 2308 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1794 if (waittime > to) waittime = to; 2309 if (waittime > to) waittime = to;
1795 } 2310 }
1796 2311
1797#if EV_PERIODIC_ENABLE 2312#if EV_PERIODIC_ENABLE
1798 if (periodiccnt) 2313 if (periodiccnt)
1799 { 2314 {
1800 ev_tstamp to = ev_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2315 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1801 if (waittime > to) waittime = to; 2316 if (waittime > to) waittime = to;
1802 } 2317 }
1803#endif 2318#endif
1804 2319
2320 /* don't let timeouts decrease the waittime below timeout_blocktime */
1805 if (expect_false (waittime < timeout_blocktime)) 2321 if (expect_false (waittime < timeout_blocktime))
1806 waittime = timeout_blocktime; 2322 waittime = timeout_blocktime;
1807 2323
1808 sleeptime = waittime - backend_fudge; 2324 /* extra check because io_blocktime is commonly 0 */
1809
1810 if (expect_true (sleeptime > io_blocktime)) 2325 if (expect_false (io_blocktime))
1811 sleeptime = io_blocktime;
1812
1813 if (sleeptime)
1814 { 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 {
1815 ev_sleep (sleeptime); 2334 ev_sleep (sleeptime);
1816 waittime -= sleeptime; 2335 waittime -= sleeptime;
2336 }
1817 } 2337 }
1818 } 2338 }
1819 2339
2340#if EV_MINIMAL < 2
1820 ++loop_count; 2341 ++loop_count;
2342#endif
2343 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1821 backend_poll (EV_A_ waittime); 2344 backend_poll (EV_A_ waittime);
2345 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1822 2346
1823 /* update ev_rt_now, do magic */ 2347 /* update ev_rt_now, do magic */
1824 time_update (EV_A_ waittime + sleeptime); 2348 time_update (EV_A_ waittime + sleeptime);
1825 } 2349 }
1826 2350
… …
1837 2361
1838 /* queue check watchers, to be executed first */ 2362 /* queue check watchers, to be executed first */
1839 if (expect_false (checkcnt)) 2363 if (expect_false (checkcnt))
1840 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2364 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1841 2365
1842 call_pending (EV_A); 2366 EV_INVOKE_PENDING;
1843 } 2367 }
1844 while (expect_true ( 2368 while (expect_true (
1845 activecnt 2369 activecnt
1846 && !loop_done 2370 && !loop_done
1847 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2371 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1848 )); 2372 ));
1849 2373
1850 if (loop_done == EVUNLOOP_ONE) 2374 if (loop_done == EVUNLOOP_ONE)
1851 loop_done = EVUNLOOP_CANCEL; 2375 loop_done = EVUNLOOP_CANCEL;
2376
2377#if EV_MINIMAL < 2
2378 --loop_depth;
2379#endif
1852} 2380}
1853 2381
1854void 2382void
1855ev_unloop (EV_P_ int how) 2383ev_unloop (EV_P_ int how)
1856{ 2384{
1857 loop_done = how; 2385 loop_done = how;
1858} 2386}
1859 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
1860/*****************************************************************************/ 2425/*****************************************************************************/
2426/* singly-linked list management, used when the expected list length is short */
1861 2427
1862void inline_size 2428inline_size void
1863wlist_add (WL *head, WL elem) 2429wlist_add (WL *head, WL elem)
1864{ 2430{
1865 elem->next = *head; 2431 elem->next = *head;
1866 *head = elem; 2432 *head = elem;
1867} 2433}
1868 2434
1869void inline_size 2435inline_size void
1870wlist_del (WL *head, WL elem) 2436wlist_del (WL *head, WL elem)
1871{ 2437{
1872 while (*head) 2438 while (*head)
1873 { 2439 {
1874 if (*head == elem) 2440 if (expect_true (*head == elem))
1875 { 2441 {
1876 *head = elem->next; 2442 *head = elem->next;
1877 return; 2443 break;
1878 } 2444 }
1879 2445
1880 head = &(*head)->next; 2446 head = &(*head)->next;
1881 } 2447 }
1882} 2448}
1883 2449
1884void inline_speed 2450/* internal, faster, version of ev_clear_pending */
2451inline_speed void
1885clear_pending (EV_P_ W w) 2452clear_pending (EV_P_ W w)
1886{ 2453{
1887 if (w->pending) 2454 if (w->pending)
1888 { 2455 {
1889 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2456 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1890 w->pending = 0; 2457 w->pending = 0;
1891 } 2458 }
1892} 2459}
1893 2460
1894int 2461int
… …
1898 int pending = w_->pending; 2465 int pending = w_->pending;
1899 2466
1900 if (expect_true (pending)) 2467 if (expect_true (pending))
1901 { 2468 {
1902 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2469 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2470 p->w = (W)&pending_w;
1903 w_->pending = 0; 2471 w_->pending = 0;
1904 p->w = 0;
1905 return p->events; 2472 return p->events;
1906 } 2473 }
1907 else 2474 else
1908 return 0; 2475 return 0;
1909} 2476}
1910 2477
1911void inline_size 2478inline_size void
1912pri_adjust (EV_P_ W w) 2479pri_adjust (EV_P_ W w)
1913{ 2480{
1914 int pri = w->priority; 2481 int pri = ev_priority (w);
1915 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2482 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1916 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2483 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1917 w->priority = pri; 2484 ev_set_priority (w, pri);
1918} 2485}
1919 2486
1920void inline_speed 2487inline_speed void
1921ev_start (EV_P_ W w, int active) 2488ev_start (EV_P_ W w, int active)
1922{ 2489{
1923 pri_adjust (EV_A_ w); 2490 pri_adjust (EV_A_ w);
1924 w->active = active; 2491 w->active = active;
1925 ev_ref (EV_A); 2492 ev_ref (EV_A);
1926} 2493}
1927 2494
1928void inline_size 2495inline_size void
1929ev_stop (EV_P_ W w) 2496ev_stop (EV_P_ W w)
1930{ 2497{
1931 ev_unref (EV_A); 2498 ev_unref (EV_A);
1932 w->active = 0; 2499 w->active = 0;
1933} 2500}
… …
1940 int fd = w->fd; 2507 int fd = w->fd;
1941 2508
1942 if (expect_false (ev_is_active (w))) 2509 if (expect_false (ev_is_active (w)))
1943 return; 2510 return;
1944 2511
1945 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;
1946 2516
1947 ev_start (EV_A_ (W)w, 1); 2517 ev_start (EV_A_ (W)w, 1);
1948 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2518 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1949 wlist_add (&anfds[fd].head, (WL)w); 2519 wlist_add (&anfds[fd].head, (WL)w);
1950 2520
1951 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2521 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1952 w->events &= ~EV_IOFDSET; 2522 w->events &= ~EV__IOFDSET;
2523
2524 EV_FREQUENT_CHECK;
1953} 2525}
1954 2526
1955void noinline 2527void noinline
1956ev_io_stop (EV_P_ ev_io *w) 2528ev_io_stop (EV_P_ ev_io *w)
1957{ 2529{
1958 clear_pending (EV_A_ (W)w); 2530 clear_pending (EV_A_ (W)w);
1959 if (expect_false (!ev_is_active (w))) 2531 if (expect_false (!ev_is_active (w)))
1960 return; 2532 return;
1961 2533
1962 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;
1963 2537
1964 wlist_del (&anfds[w->fd].head, (WL)w); 2538 wlist_del (&anfds[w->fd].head, (WL)w);
1965 ev_stop (EV_A_ (W)w); 2539 ev_stop (EV_A_ (W)w);
1966 2540
1967 fd_change (EV_A_ w->fd, 1); 2541 fd_change (EV_A_ w->fd, 1);
2542
2543 EV_FREQUENT_CHECK;
1968} 2544}
1969 2545
1970void noinline 2546void noinline
1971ev_timer_start (EV_P_ ev_timer *w) 2547ev_timer_start (EV_P_ ev_timer *w)
1972{ 2548{
1973 if (expect_false (ev_is_active (w))) 2549 if (expect_false (ev_is_active (w)))
1974 return; 2550 return;
1975 2551
1976 ev_at (w) += mn_now; 2552 ev_at (w) += mn_now;
1977 2553
1978 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.));
1979 2555
2556 EV_FREQUENT_CHECK;
2557
2558 ++timercnt;
1980 ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1); 2559 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1981 array_needsize (WT, timers, timermax, timercnt + HEAP0, EMPTY2); 2560 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1982 timers [ev_active (w)] = (WT)w; 2561 ANHE_w (timers [ev_active (w)]) = (WT)w;
2562 ANHE_at_cache (timers [ev_active (w)]);
1983 upheap (timers, ev_active (w)); 2563 upheap (timers, ev_active (w));
1984 2564
2565 EV_FREQUENT_CHECK;
2566
1985 /*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/ 2567 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1986} 2568}
1987 2569
1988void noinline 2570void noinline
1989ev_timer_stop (EV_P_ ev_timer *w) 2571ev_timer_stop (EV_P_ ev_timer *w)
1990{ 2572{
1991 clear_pending (EV_A_ (W)w); 2573 clear_pending (EV_A_ (W)w);
1992 if (expect_false (!ev_is_active (w))) 2574 if (expect_false (!ev_is_active (w)))
1993 return; 2575 return;
1994 2576
2577 EV_FREQUENT_CHECK;
2578
1995 { 2579 {
1996 int active = ev_active (w); 2580 int active = ev_active (w);
1997 2581
1998 assert (("internal timer heap corruption", timers [active] == (WT)w)); 2582 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
1999 2583
2584 --timercnt;
2585
2000 if (expect_true (active < timercnt + HEAP0 - 1)) 2586 if (expect_true (active < timercnt + HEAP0))
2001 { 2587 {
2002 timers [active] = timers [timercnt + HEAP0 - 1]; 2588 timers [active] = timers [timercnt + HEAP0];
2003 adjustheap (timers, timercnt, active); 2589 adjustheap (timers, timercnt, active);
2004 } 2590 }
2005
2006 --timercnt;
2007 } 2591 }
2008 2592
2009 ev_at (w) -= mn_now; 2593 ev_at (w) -= mn_now;
2010 2594
2011 ev_stop (EV_A_ (W)w); 2595 ev_stop (EV_A_ (W)w);
2596
2597 EV_FREQUENT_CHECK;
2012} 2598}
2013 2599
2014void noinline 2600void noinline
2015ev_timer_again (EV_P_ ev_timer *w) 2601ev_timer_again (EV_P_ ev_timer *w)
2016{ 2602{
2603 EV_FREQUENT_CHECK;
2604
2017 if (ev_is_active (w)) 2605 if (ev_is_active (w))
2018 { 2606 {
2019 if (w->repeat) 2607 if (w->repeat)
2020 { 2608 {
2021 ev_at (w) = mn_now + w->repeat; 2609 ev_at (w) = mn_now + w->repeat;
2610 ANHE_at_cache (timers [ev_active (w)]);
2022 adjustheap (timers, timercnt, ev_active (w)); 2611 adjustheap (timers, timercnt, ev_active (w));
2023 } 2612 }
2024 else 2613 else
2025 ev_timer_stop (EV_A_ w); 2614 ev_timer_stop (EV_A_ w);
2026 } 2615 }
2027 else if (w->repeat) 2616 else if (w->repeat)
2028 { 2617 {
2029 ev_at (w) = w->repeat; 2618 ev_at (w) = w->repeat;
2030 ev_timer_start (EV_A_ w); 2619 ev_timer_start (EV_A_ w);
2031 } 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.);
2032} 2629}
2033 2630
2034#if EV_PERIODIC_ENABLE 2631#if EV_PERIODIC_ENABLE
2035void noinline 2632void noinline
2036ev_periodic_start (EV_P_ ev_periodic *w) 2633ev_periodic_start (EV_P_ ev_periodic *w)
… …
2040 2637
2041 if (w->reschedule_cb) 2638 if (w->reschedule_cb)
2042 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2639 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2043 else if (w->interval) 2640 else if (w->interval)
2044 { 2641 {
2045 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.));
2046 /* 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 */
2047 ev_at (w) = 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;
2048 } 2645 }
2049 else 2646 else
2050 ev_at (w) = w->offset; 2647 ev_at (w) = w->offset;
2051 2648
2649 EV_FREQUENT_CHECK;
2650
2651 ++periodiccnt;
2052 ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1); 2652 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2053 array_needsize (WT, periodics, periodicmax, periodiccnt + HEAP0, EMPTY2); 2653 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2054 periodics [ev_active (w)] = (WT)w; 2654 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2655 ANHE_at_cache (periodics [ev_active (w)]);
2055 upheap (periodics, ev_active (w)); 2656 upheap (periodics, ev_active (w));
2056 2657
2658 EV_FREQUENT_CHECK;
2659
2057 /*assert (("internal periodic heap corruption", periodics [ev_active (w)] == w));*/ 2660 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2058} 2661}
2059 2662
2060void noinline 2663void noinline
2061ev_periodic_stop (EV_P_ ev_periodic *w) 2664ev_periodic_stop (EV_P_ ev_periodic *w)
2062{ 2665{
2063 clear_pending (EV_A_ (W)w); 2666 clear_pending (EV_A_ (W)w);
2064 if (expect_false (!ev_is_active (w))) 2667 if (expect_false (!ev_is_active (w)))
2065 return; 2668 return;
2066 2669
2670 EV_FREQUENT_CHECK;
2671
2067 { 2672 {
2068 int active = ev_active (w); 2673 int active = ev_active (w);
2069 2674
2070 assert (("internal periodic heap corruption", periodics [active] == (WT)w)); 2675 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2071 2676
2677 --periodiccnt;
2678
2072 if (expect_true (active < periodiccnt + HEAP0 - 1)) 2679 if (expect_true (active < periodiccnt + HEAP0))
2073 { 2680 {
2074 periodics [active] = periodics [periodiccnt + HEAP0 - 1]; 2681 periodics [active] = periodics [periodiccnt + HEAP0];
2075 adjustheap (periodics, periodiccnt, active); 2682 adjustheap (periodics, periodiccnt, active);
2076 } 2683 }
2077
2078 --periodiccnt;
2079 } 2684 }
2080 2685
2081 ev_stop (EV_A_ (W)w); 2686 ev_stop (EV_A_ (W)w);
2687
2688 EV_FREQUENT_CHECK;
2082} 2689}
2083 2690
2084void noinline 2691void noinline
2085ev_periodic_again (EV_P_ ev_periodic *w) 2692ev_periodic_again (EV_P_ ev_periodic *w)
2086{ 2693{
… …
2095#endif 2702#endif
2096 2703
2097void noinline 2704void noinline
2098ev_signal_start (EV_P_ ev_signal *w) 2705ev_signal_start (EV_P_ ev_signal *w)
2099{ 2706{
2100#if EV_MULTIPLICITY
2101 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2102#endif
2103 if (expect_false (ev_is_active (w))) 2707 if (expect_false (ev_is_active (w)))
2104 return; 2708 return;
2105 2709
2106 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));
2107 2711
2108 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));
2109 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)
2110 { 2723 {
2111#ifndef _WIN32 2724 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2112 sigset_t full, prev; 2725 if (sigfd < 0 && errno == EINVAL)
2113 sigfillset (&full); 2726 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2114 sigprocmask (SIG_SETMASK, &full, &prev);
2115#endif
2116 2727
2117 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2728 if (sigfd >= 0)
2729 {
2730 fd_intern (sigfd); /* doing it twice will not hurt */
2118 2731
2119#ifndef _WIN32 2732 sigemptyset (&sigfd_set);
2120 sigprocmask (SIG_SETMASK, &prev, 0); 2733
2121#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 }
2122 } 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
2123 2750
2124 ev_start (EV_A_ (W)w, 1); 2751 ev_start (EV_A_ (W)w, 1);
2125 wlist_add (&signals [w->signum - 1].head, (WL)w); 2752 wlist_add (&signals [w->signum - 1].head, (WL)w);
2126 2753
2127 if (!((WL)w)->next) 2754 if (!((WL)w)->next)
2755# if EV_USE_SIGNALFD
2756 if (sigfd < 0) /*TODO*/
2757# endif
2128 { 2758 {
2129#if _WIN32 2759# ifdef _WIN32
2760 evpipe_init (EV_A);
2761
2130 signal (w->signum, ev_sighandler); 2762 signal (w->signum, ev_sighandler);
2131#else 2763# else
2132 struct sigaction sa; 2764 struct sigaction sa;
2765
2766 evpipe_init (EV_A);
2767
2133 sa.sa_handler = ev_sighandler; 2768 sa.sa_handler = ev_sighandler;
2134 sigfillset (&sa.sa_mask); 2769 sigfillset (&sa.sa_mask);
2135 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 */
2136 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);
2137#endif 2776#endif
2138 } 2777 }
2778
2779 EV_FREQUENT_CHECK;
2139} 2780}
2140 2781
2141void noinline 2782void noinline
2142ev_signal_stop (EV_P_ ev_signal *w) 2783ev_signal_stop (EV_P_ ev_signal *w)
2143{ 2784{
2144 clear_pending (EV_A_ (W)w); 2785 clear_pending (EV_A_ (W)w);
2145 if (expect_false (!ev_is_active (w))) 2786 if (expect_false (!ev_is_active (w)))
2146 return; 2787 return;
2147 2788
2789 EV_FREQUENT_CHECK;
2790
2148 wlist_del (&signals [w->signum - 1].head, (WL)w); 2791 wlist_del (&signals [w->signum - 1].head, (WL)w);
2149 ev_stop (EV_A_ (W)w); 2792 ev_stop (EV_A_ (W)w);
2150 2793
2151 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
2152 signal (w->signum, SIG_DFL); 2813 signal (w->signum, SIG_DFL);
2814 }
2815
2816 EV_FREQUENT_CHECK;
2153} 2817}
2154 2818
2155void 2819void
2156ev_child_start (EV_P_ ev_child *w) 2820ev_child_start (EV_P_ ev_child *w)
2157{ 2821{
2158#if EV_MULTIPLICITY 2822#if EV_MULTIPLICITY
2159 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));
2160#endif 2824#endif
2161 if (expect_false (ev_is_active (w))) 2825 if (expect_false (ev_is_active (w)))
2162 return; 2826 return;
2163 2827
2828 EV_FREQUENT_CHECK;
2829
2164 ev_start (EV_A_ (W)w, 1); 2830 ev_start (EV_A_ (W)w, 1);
2165 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;
2166} 2834}
2167 2835
2168void 2836void
2169ev_child_stop (EV_P_ ev_child *w) 2837ev_child_stop (EV_P_ ev_child *w)
2170{ 2838{
2171 clear_pending (EV_A_ (W)w); 2839 clear_pending (EV_A_ (W)w);
2172 if (expect_false (!ev_is_active (w))) 2840 if (expect_false (!ev_is_active (w)))
2173 return; 2841 return;
2174 2842
2843 EV_FREQUENT_CHECK;
2844
2175 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2845 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2176 ev_stop (EV_A_ (W)w); 2846 ev_stop (EV_A_ (W)w);
2847
2848 EV_FREQUENT_CHECK;
2177} 2849}
2178 2850
2179#if EV_STAT_ENABLE 2851#if EV_STAT_ENABLE
2180 2852
2181# ifdef _WIN32 2853# ifdef _WIN32
2182# undef lstat 2854# undef lstat
2183# define lstat(a,b) _stati64 (a,b) 2855# define lstat(a,b) _stati64 (a,b)
2184# endif 2856# endif
2185 2857
2186#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 */
2187#define MIN_STAT_INTERVAL 0.1074891 2860#define MIN_STAT_INTERVAL 0.1074891
2188 2861
2189static 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);
2190 2863
2191#if EV_USE_INOTIFY 2864#if EV_USE_INOTIFY
2192# 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)
2193 2868
2194static void noinline 2869static void noinline
2195infy_add (EV_P_ ev_stat *w) 2870infy_add (EV_P_ ev_stat *w)
2196{ 2871{
2197 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);
2198 2873
2199 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 */
2200 { 2894 }
2201 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;
2202 2899
2203 /* monitor some parent directory for speedup hints */ 2900 /* if path is not there, monitor some parent directory for speedup hints */
2204 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2901 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2205 /* but an efficiency issue only */ 2902 /* but an efficiency issue only */
2206 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2903 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2207 { 2904 {
2208 char path [4096]; 2905 char path [4096];
2209 strcpy (path, w->path); 2906 strcpy (path, w->path);
… …
2213 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2910 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2214 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2911 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2215 2912
2216 char *pend = strrchr (path, '/'); 2913 char *pend = strrchr (path, '/');
2217 2914
2218 if (!pend) 2915 if (!pend || pend == path)
2219 break; /* whoops, no '/', complain to your admin */ 2916 break;
2220 2917
2221 *pend = 0; 2918 *pend = 0;
2222 w->wd = inotify_add_watch (fs_fd, path, mask); 2919 w->wd = inotify_add_watch (fs_fd, path, mask);
2223 } 2920 }
2224 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2921 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2225 } 2922 }
2226 } 2923 }
2227 else
2228 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2229 2924
2230 if (w->wd >= 0) 2925 if (w->wd >= 0)
2231 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);
2232} 2932}
2233 2933
2234static void noinline 2934static void noinline
2235infy_del (EV_P_ ev_stat *w) 2935infy_del (EV_P_ ev_stat *w)
2236{ 2936{
… …
2250 2950
2251static void noinline 2951static void noinline
2252infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2952infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2253{ 2953{
2254 if (slot < 0) 2954 if (slot < 0)
2255 /* overflow, need to check for all hahs slots */ 2955 /* overflow, need to check for all hash slots */
2256 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2956 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2257 infy_wd (EV_A_ slot, wd, ev); 2957 infy_wd (EV_A_ slot, wd, ev);
2258 else 2958 else
2259 { 2959 {
2260 WL w_; 2960 WL w_;
… …
2266 2966
2267 if (w->wd == wd || wd == -1) 2967 if (w->wd == wd || wd == -1)
2268 { 2968 {
2269 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2969 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2270 { 2970 {
2971 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2271 w->wd = -1; 2972 w->wd = -1;
2272 infy_add (EV_A_ w); /* re-add, no matter what */ 2973 infy_add (EV_A_ w); /* re-add, no matter what */
2273 } 2974 }
2274 2975
2275 stat_timer_cb (EV_A_ &w->timer, 0); 2976 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2280 2981
2281static void 2982static void
2282infy_cb (EV_P_ ev_io *w, int revents) 2983infy_cb (EV_P_ ev_io *w, int revents)
2283{ 2984{
2284 char buf [EV_INOTIFY_BUFSIZE]; 2985 char buf [EV_INOTIFY_BUFSIZE];
2285 struct inotify_event *ev = (struct inotify_event *)buf;
2286 int ofs; 2986 int ofs;
2287 int len = read (fs_fd, buf, sizeof (buf)); 2987 int len = read (fs_fd, buf, sizeof (buf));
2288 2988
2289 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);
2290 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 }
2291} 2995}
2292 2996
2293void 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
2294infy_init (EV_P) 3032infy_init (EV_P)
2295{ 3033{
2296 if (fs_fd != -2) 3034 if (fs_fd != -2)
2297 return; 3035 return;
2298 3036
3037 fs_fd = -1;
3038
3039 check_2625 (EV_A);
3040
2299 fs_fd = inotify_init (); 3041 fs_fd = infy_newfd ();
2300 3042
2301 if (fs_fd >= 0) 3043 if (fs_fd >= 0)
2302 { 3044 {
3045 fd_intern (fs_fd);
2303 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3046 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2304 ev_set_priority (&fs_w, EV_MAXPRI); 3047 ev_set_priority (&fs_w, EV_MAXPRI);
2305 ev_io_start (EV_A_ &fs_w); 3048 ev_io_start (EV_A_ &fs_w);
3049 ev_unref (EV_A);
2306 } 3050 }
2307} 3051}
2308 3052
2309void inline_size 3053inline_size void
2310infy_fork (EV_P) 3054infy_fork (EV_P)
2311{ 3055{
2312 int slot; 3056 int slot;
2313 3057
2314 if (fs_fd < 0) 3058 if (fs_fd < 0)
2315 return; 3059 return;
2316 3060
3061 ev_ref (EV_A);
3062 ev_io_stop (EV_A_ &fs_w);
2317 close (fs_fd); 3063 close (fs_fd);
2318 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 }
2319 3073
2320 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3074 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2321 { 3075 {
2322 WL w_ = fs_hash [slot].head; 3076 WL w_ = fs_hash [slot].head;
2323 fs_hash [slot].head = 0; 3077 fs_hash [slot].head = 0;
… …
2330 w->wd = -1; 3084 w->wd = -1;
2331 3085
2332 if (fs_fd >= 0) 3086 if (fs_fd >= 0)
2333 infy_add (EV_A_ w); /* re-add, no matter what */ 3087 infy_add (EV_A_ w); /* re-add, no matter what */
2334 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);
2335 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 }
2336 } 3095 }
2337
2338 } 3096 }
2339} 3097}
2340 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)
2341#endif 3105#endif
2342 3106
2343void 3107void
2344ev_stat_stat (EV_P_ ev_stat *w) 3108ev_stat_stat (EV_P_ ev_stat *w)
2345{ 3109{
… …
2352static void noinline 3116static void noinline
2353stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3117stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2354{ 3118{
2355 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3119 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2356 3120
2357 /* we copy this here each the time so that */ 3121 ev_statdata prev = w->attr;
2358 /* prev has the old value when the callback gets invoked */
2359 w->prev = w->attr;
2360 ev_stat_stat (EV_A_ w); 3122 ev_stat_stat (EV_A_ w);
2361 3123
2362 /* 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 */
2363 if ( 3125 if (
2364 w->prev.st_dev != w->attr.st_dev 3126 prev.st_dev != w->attr.st_dev
2365 || w->prev.st_ino != w->attr.st_ino 3127 || prev.st_ino != w->attr.st_ino
2366 || w->prev.st_mode != w->attr.st_mode 3128 || prev.st_mode != w->attr.st_mode
2367 || w->prev.st_nlink != w->attr.st_nlink 3129 || prev.st_nlink != w->attr.st_nlink
2368 || w->prev.st_uid != w->attr.st_uid 3130 || prev.st_uid != w->attr.st_uid
2369 || w->prev.st_gid != w->attr.st_gid 3131 || prev.st_gid != w->attr.st_gid
2370 || w->prev.st_rdev != w->attr.st_rdev 3132 || prev.st_rdev != w->attr.st_rdev
2371 || w->prev.st_size != w->attr.st_size 3133 || prev.st_size != w->attr.st_size
2372 || w->prev.st_atime != w->attr.st_atime 3134 || prev.st_atime != w->attr.st_atime
2373 || w->prev.st_mtime != w->attr.st_mtime 3135 || prev.st_mtime != w->attr.st_mtime
2374 || w->prev.st_ctime != w->attr.st_ctime 3136 || prev.st_ctime != w->attr.st_ctime
2375 ) { 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
2376 #if EV_USE_INOTIFY 3143 #if EV_USE_INOTIFY
3144 if (fs_fd >= 0)
3145 {
2377 infy_del (EV_A_ w); 3146 infy_del (EV_A_ w);
2378 infy_add (EV_A_ w); 3147 infy_add (EV_A_ w);
2379 ev_stat_stat (EV_A_ w); /* avoid race... */ 3148 ev_stat_stat (EV_A_ w); /* avoid race... */
3149 }
2380 #endif 3150 #endif
2381 3151
2382 ev_feed_event (EV_A_ w, EV_STAT); 3152 ev_feed_event (EV_A_ w, EV_STAT);
2383 } 3153 }
2384} 3154}
… …
2387ev_stat_start (EV_P_ ev_stat *w) 3157ev_stat_start (EV_P_ ev_stat *w)
2388{ 3158{
2389 if (expect_false (ev_is_active (w))) 3159 if (expect_false (ev_is_active (w)))
2390 return; 3160 return;
2391 3161
2392 /* since we use memcmp, we need to clear any padding data etc. */
2393 memset (&w->prev, 0, sizeof (ev_statdata));
2394 memset (&w->attr, 0, sizeof (ev_statdata));
2395
2396 ev_stat_stat (EV_A_ w); 3162 ev_stat_stat (EV_A_ w);
2397 3163
3164 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2398 if (w->interval < MIN_STAT_INTERVAL) 3165 w->interval = MIN_STAT_INTERVAL;
2399 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2400 3166
2401 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);
2402 ev_set_priority (&w->timer, ev_priority (w)); 3168 ev_set_priority (&w->timer, ev_priority (w));
2403 3169
2404#if EV_USE_INOTIFY 3170#if EV_USE_INOTIFY
2405 infy_init (EV_A); 3171 infy_init (EV_A);
2406 3172
2407 if (fs_fd >= 0) 3173 if (fs_fd >= 0)
2408 infy_add (EV_A_ w); 3174 infy_add (EV_A_ w);
2409 else 3175 else
2410#endif 3176#endif
3177 {
2411 ev_timer_start (EV_A_ &w->timer); 3178 ev_timer_again (EV_A_ &w->timer);
3179 ev_unref (EV_A);
3180 }
2412 3181
2413 ev_start (EV_A_ (W)w, 1); 3182 ev_start (EV_A_ (W)w, 1);
3183
3184 EV_FREQUENT_CHECK;
2414} 3185}
2415 3186
2416void 3187void
2417ev_stat_stop (EV_P_ ev_stat *w) 3188ev_stat_stop (EV_P_ ev_stat *w)
2418{ 3189{
2419 clear_pending (EV_A_ (W)w); 3190 clear_pending (EV_A_ (W)w);
2420 if (expect_false (!ev_is_active (w))) 3191 if (expect_false (!ev_is_active (w)))
2421 return; 3192 return;
2422 3193
3194 EV_FREQUENT_CHECK;
3195
2423#if EV_USE_INOTIFY 3196#if EV_USE_INOTIFY
2424 infy_del (EV_A_ w); 3197 infy_del (EV_A_ w);
2425#endif 3198#endif
3199
3200 if (ev_is_active (&w->timer))
3201 {
3202 ev_ref (EV_A);
2426 ev_timer_stop (EV_A_ &w->timer); 3203 ev_timer_stop (EV_A_ &w->timer);
3204 }
2427 3205
2428 ev_stop (EV_A_ (W)w); 3206 ev_stop (EV_A_ (W)w);
3207
3208 EV_FREQUENT_CHECK;
2429} 3209}
2430#endif 3210#endif
2431 3211
2432#if EV_IDLE_ENABLE 3212#if EV_IDLE_ENABLE
2433void 3213void
… …
2435{ 3215{
2436 if (expect_false (ev_is_active (w))) 3216 if (expect_false (ev_is_active (w)))
2437 return; 3217 return;
2438 3218
2439 pri_adjust (EV_A_ (W)w); 3219 pri_adjust (EV_A_ (W)w);
3220
3221 EV_FREQUENT_CHECK;
2440 3222
2441 { 3223 {
2442 int active = ++idlecnt [ABSPRI (w)]; 3224 int active = ++idlecnt [ABSPRI (w)];
2443 3225
2444 ++idleall; 3226 ++idleall;
2445 ev_start (EV_A_ (W)w, active); 3227 ev_start (EV_A_ (W)w, active);
2446 3228
2447 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);
2448 idles [ABSPRI (w)][active - 1] = w; 3230 idles [ABSPRI (w)][active - 1] = w;
2449 } 3231 }
3232
3233 EV_FREQUENT_CHECK;
2450} 3234}
2451 3235
2452void 3236void
2453ev_idle_stop (EV_P_ ev_idle *w) 3237ev_idle_stop (EV_P_ ev_idle *w)
2454{ 3238{
2455 clear_pending (EV_A_ (W)w); 3239 clear_pending (EV_A_ (W)w);
2456 if (expect_false (!ev_is_active (w))) 3240 if (expect_false (!ev_is_active (w)))
2457 return; 3241 return;
2458 3242
3243 EV_FREQUENT_CHECK;
3244
2459 { 3245 {
2460 int active = ev_active (w); 3246 int active = ev_active (w);
2461 3247
2462 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3248 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2463 ev_active (idles [ABSPRI (w)][active - 1]) = active; 3249 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2464 3250
2465 ev_stop (EV_A_ (W)w); 3251 ev_stop (EV_A_ (W)w);
2466 --idleall; 3252 --idleall;
2467 } 3253 }
3254
3255 EV_FREQUENT_CHECK;
2468} 3256}
2469#endif 3257#endif
2470 3258
2471void 3259void
2472ev_prepare_start (EV_P_ ev_prepare *w) 3260ev_prepare_start (EV_P_ ev_prepare *w)
2473{ 3261{
2474 if (expect_false (ev_is_active (w))) 3262 if (expect_false (ev_is_active (w)))
2475 return; 3263 return;
3264
3265 EV_FREQUENT_CHECK;
2476 3266
2477 ev_start (EV_A_ (W)w, ++preparecnt); 3267 ev_start (EV_A_ (W)w, ++preparecnt);
2478 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3268 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2479 prepares [preparecnt - 1] = w; 3269 prepares [preparecnt - 1] = w;
3270
3271 EV_FREQUENT_CHECK;
2480} 3272}
2481 3273
2482void 3274void
2483ev_prepare_stop (EV_P_ ev_prepare *w) 3275ev_prepare_stop (EV_P_ ev_prepare *w)
2484{ 3276{
2485 clear_pending (EV_A_ (W)w); 3277 clear_pending (EV_A_ (W)w);
2486 if (expect_false (!ev_is_active (w))) 3278 if (expect_false (!ev_is_active (w)))
2487 return; 3279 return;
2488 3280
3281 EV_FREQUENT_CHECK;
3282
2489 { 3283 {
2490 int active = ev_active (w); 3284 int active = ev_active (w);
2491 3285
2492 prepares [active - 1] = prepares [--preparecnt]; 3286 prepares [active - 1] = prepares [--preparecnt];
2493 ev_active (prepares [active - 1]) = active; 3287 ev_active (prepares [active - 1]) = active;
2494 } 3288 }
2495 3289
2496 ev_stop (EV_A_ (W)w); 3290 ev_stop (EV_A_ (W)w);
3291
3292 EV_FREQUENT_CHECK;
2497} 3293}
2498 3294
2499void 3295void
2500ev_check_start (EV_P_ ev_check *w) 3296ev_check_start (EV_P_ ev_check *w)
2501{ 3297{
2502 if (expect_false (ev_is_active (w))) 3298 if (expect_false (ev_is_active (w)))
2503 return; 3299 return;
3300
3301 EV_FREQUENT_CHECK;
2504 3302
2505 ev_start (EV_A_ (W)w, ++checkcnt); 3303 ev_start (EV_A_ (W)w, ++checkcnt);
2506 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3304 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2507 checks [checkcnt - 1] = w; 3305 checks [checkcnt - 1] = w;
3306
3307 EV_FREQUENT_CHECK;
2508} 3308}
2509 3309
2510void 3310void
2511ev_check_stop (EV_P_ ev_check *w) 3311ev_check_stop (EV_P_ ev_check *w)
2512{ 3312{
2513 clear_pending (EV_A_ (W)w); 3313 clear_pending (EV_A_ (W)w);
2514 if (expect_false (!ev_is_active (w))) 3314 if (expect_false (!ev_is_active (w)))
2515 return; 3315 return;
2516 3316
3317 EV_FREQUENT_CHECK;
3318
2517 { 3319 {
2518 int active = ev_active (w); 3320 int active = ev_active (w);
2519 3321
2520 checks [active - 1] = checks [--checkcnt]; 3322 checks [active - 1] = checks [--checkcnt];
2521 ev_active (checks [active - 1]) = active; 3323 ev_active (checks [active - 1]) = active;
2522 } 3324 }
2523 3325
2524 ev_stop (EV_A_ (W)w); 3326 ev_stop (EV_A_ (W)w);
3327
3328 EV_FREQUENT_CHECK;
2525} 3329}
2526 3330
2527#if EV_EMBED_ENABLE 3331#if EV_EMBED_ENABLE
2528void noinline 3332void noinline
2529ev_embed_sweep (EV_P_ ev_embed *w) 3333ev_embed_sweep (EV_P_ ev_embed *w)
… …
2546embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3350embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2547{ 3351{
2548 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3352 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2549 3353
2550 { 3354 {
2551 struct ev_loop *loop = w->other; 3355 EV_P = w->other;
2552 3356
2553 while (fdchangecnt) 3357 while (fdchangecnt)
2554 { 3358 {
2555 fd_reify (EV_A); 3359 fd_reify (EV_A);
2556 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3360 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2557 } 3361 }
2558 } 3362 }
2559} 3363}
2560 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
2561#if 0 3382#if 0
2562static void 3383static void
2563embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3384embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2564{ 3385{
2565 ev_idle_stop (EV_A_ idle); 3386 ev_idle_stop (EV_A_ idle);
… …
2571{ 3392{
2572 if (expect_false (ev_is_active (w))) 3393 if (expect_false (ev_is_active (w)))
2573 return; 3394 return;
2574 3395
2575 { 3396 {
2576 struct ev_loop *loop = w->other; 3397 EV_P = w->other;
2577 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 ()));
2578 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);
2579 } 3400 }
3401
3402 EV_FREQUENT_CHECK;
2580 3403
2581 ev_set_priority (&w->io, ev_priority (w)); 3404 ev_set_priority (&w->io, ev_priority (w));
2582 ev_io_start (EV_A_ &w->io); 3405 ev_io_start (EV_A_ &w->io);
2583 3406
2584 ev_prepare_init (&w->prepare, embed_prepare_cb); 3407 ev_prepare_init (&w->prepare, embed_prepare_cb);
2585 ev_set_priority (&w->prepare, EV_MINPRI); 3408 ev_set_priority (&w->prepare, EV_MINPRI);
2586 ev_prepare_start (EV_A_ &w->prepare); 3409 ev_prepare_start (EV_A_ &w->prepare);
2587 3410
3411 ev_fork_init (&w->fork, embed_fork_cb);
3412 ev_fork_start (EV_A_ &w->fork);
3413
2588 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3414 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2589 3415
2590 ev_start (EV_A_ (W)w, 1); 3416 ev_start (EV_A_ (W)w, 1);
3417
3418 EV_FREQUENT_CHECK;
2591} 3419}
2592 3420
2593void 3421void
2594ev_embed_stop (EV_P_ ev_embed *w) 3422ev_embed_stop (EV_P_ ev_embed *w)
2595{ 3423{
2596 clear_pending (EV_A_ (W)w); 3424 clear_pending (EV_A_ (W)w);
2597 if (expect_false (!ev_is_active (w))) 3425 if (expect_false (!ev_is_active (w)))
2598 return; 3426 return;
2599 3427
3428 EV_FREQUENT_CHECK;
3429
2600 ev_io_stop (EV_A_ &w->io); 3430 ev_io_stop (EV_A_ &w->io);
2601 ev_prepare_stop (EV_A_ &w->prepare); 3431 ev_prepare_stop (EV_A_ &w->prepare);
3432 ev_fork_stop (EV_A_ &w->fork);
2602 3433
2603 ev_stop (EV_A_ (W)w); 3434 ev_stop (EV_A_ (W)w);
3435
3436 EV_FREQUENT_CHECK;
2604} 3437}
2605#endif 3438#endif
2606 3439
2607#if EV_FORK_ENABLE 3440#if EV_FORK_ENABLE
2608void 3441void
2609ev_fork_start (EV_P_ ev_fork *w) 3442ev_fork_start (EV_P_ ev_fork *w)
2610{ 3443{
2611 if (expect_false (ev_is_active (w))) 3444 if (expect_false (ev_is_active (w)))
2612 return; 3445 return;
3446
3447 EV_FREQUENT_CHECK;
2613 3448
2614 ev_start (EV_A_ (W)w, ++forkcnt); 3449 ev_start (EV_A_ (W)w, ++forkcnt);
2615 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3450 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2616 forks [forkcnt - 1] = w; 3451 forks [forkcnt - 1] = w;
3452
3453 EV_FREQUENT_CHECK;
2617} 3454}
2618 3455
2619void 3456void
2620ev_fork_stop (EV_P_ ev_fork *w) 3457ev_fork_stop (EV_P_ ev_fork *w)
2621{ 3458{
2622 clear_pending (EV_A_ (W)w); 3459 clear_pending (EV_A_ (W)w);
2623 if (expect_false (!ev_is_active (w))) 3460 if (expect_false (!ev_is_active (w)))
2624 return; 3461 return;
2625 3462
3463 EV_FREQUENT_CHECK;
3464
2626 { 3465 {
2627 int active = ev_active (w); 3466 int active = ev_active (w);
2628 3467
2629 forks [active - 1] = forks [--forkcnt]; 3468 forks [active - 1] = forks [--forkcnt];
2630 ev_active (forks [active - 1]) = active; 3469 ev_active (forks [active - 1]) = active;
2631 } 3470 }
2632 3471
2633 ev_stop (EV_A_ (W)w); 3472 ev_stop (EV_A_ (W)w);
3473
3474 EV_FREQUENT_CHECK;
2634} 3475}
2635#endif 3476#endif
2636 3477
2637#if EV_ASYNC_ENABLE 3478#if EV_ASYNC_ENABLE
2638void 3479void
… …
2640{ 3481{
2641 if (expect_false (ev_is_active (w))) 3482 if (expect_false (ev_is_active (w)))
2642 return; 3483 return;
2643 3484
2644 evpipe_init (EV_A); 3485 evpipe_init (EV_A);
3486
3487 EV_FREQUENT_CHECK;
2645 3488
2646 ev_start (EV_A_ (W)w, ++asynccnt); 3489 ev_start (EV_A_ (W)w, ++asynccnt);
2647 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 3490 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2648 asyncs [asynccnt - 1] = w; 3491 asyncs [asynccnt - 1] = w;
3492
3493 EV_FREQUENT_CHECK;
2649} 3494}
2650 3495
2651void 3496void
2652ev_async_stop (EV_P_ ev_async *w) 3497ev_async_stop (EV_P_ ev_async *w)
2653{ 3498{
2654 clear_pending (EV_A_ (W)w); 3499 clear_pending (EV_A_ (W)w);
2655 if (expect_false (!ev_is_active (w))) 3500 if (expect_false (!ev_is_active (w)))
2656 return; 3501 return;
2657 3502
3503 EV_FREQUENT_CHECK;
3504
2658 { 3505 {
2659 int active = ev_active (w); 3506 int active = ev_active (w);
2660 3507
2661 asyncs [active - 1] = asyncs [--asynccnt]; 3508 asyncs [active - 1] = asyncs [--asynccnt];
2662 ev_active (asyncs [active - 1]) = active; 3509 ev_active (asyncs [active - 1]) = active;
2663 } 3510 }
2664 3511
2665 ev_stop (EV_A_ (W)w); 3512 ev_stop (EV_A_ (W)w);
3513
3514 EV_FREQUENT_CHECK;
2666} 3515}
2667 3516
2668void 3517void
2669ev_async_send (EV_P_ ev_async *w) 3518ev_async_send (EV_P_ ev_async *w)
2670{ 3519{
2671 w->sent = 1; 3520 w->sent = 1;
2672 evpipe_write (EV_A_ &gotasync); 3521 evpipe_write (EV_A_ &async_pending);
2673} 3522}
2674#endif 3523#endif
2675 3524
2676/*****************************************************************************/ 3525/*****************************************************************************/
2677 3526
… …
2687once_cb (EV_P_ struct ev_once *once, int revents) 3536once_cb (EV_P_ struct ev_once *once, int revents)
2688{ 3537{
2689 void (*cb)(int revents, void *arg) = once->cb; 3538 void (*cb)(int revents, void *arg) = once->cb;
2690 void *arg = once->arg; 3539 void *arg = once->arg;
2691 3540
2692 ev_io_stop (EV_A_ &once->io); 3541 ev_io_stop (EV_A_ &once->io);
2693 ev_timer_stop (EV_A_ &once->to); 3542 ev_timer_stop (EV_A_ &once->to);
2694 ev_free (once); 3543 ev_free (once);
2695 3544
2696 cb (revents, arg); 3545 cb (revents, arg);
2697} 3546}
2698 3547
2699static void 3548static void
2700once_cb_io (EV_P_ ev_io *w, int revents) 3549once_cb_io (EV_P_ ev_io *w, int revents)
2701{ 3550{
2702 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));
2703} 3554}
2704 3555
2705static void 3556static void
2706once_cb_to (EV_P_ ev_timer *w, int revents) 3557once_cb_to (EV_P_ ev_timer *w, int revents)
2707{ 3558{
2708 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));
2709} 3562}
2710 3563
2711void 3564void
2712ev_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)
2713{ 3566{
… …
2735 ev_timer_set (&once->to, timeout, 0.); 3588 ev_timer_set (&once->to, timeout, 0.);
2736 ev_timer_start (EV_A_ &once->to); 3589 ev_timer_start (EV_A_ &once->to);
2737 } 3590 }
2738} 3591}
2739 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
2740#if EV_MULTIPLICITY 3701#if EV_MULTIPLICITY
2741 #include "ev_wrap.h" 3702 #include "ev_wrap.h"
2742#endif 3703#endif
2743 3704
2744#ifdef __cplusplus 3705#ifdef __cplusplus

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