ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libev/ev.c
(Generate patch)

Comparing libev/ev.c (file contents):
Revision 1.242 by root, Fri May 9 14:07:19 2008 UTC vs.
Revision 1.330 by root, Tue Mar 9 08:46:17 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)
360 syserr_cb (msg); 544 syserr_cb (msg);
361 else 545 else
362 { 546 {
547#if EV_AVOID_STDIO
548 write (STDERR_FILENO, msg, strlen (msg));
549 write (STDERR_FILENO, ": ", 2);
550 msg = strerror (errno);
551 write (STDERR_FILENO, msg, strlen (msg));
552 write (STDERR_FILENO, "\n", 1);
553#else
363 perror (msg); 554 perror (msg);
555#endif
364 abort (); 556 abort ();
365 } 557 }
366} 558}
367 559
368static void * 560static void *
… …
393{ 585{
394 ptr = alloc (ptr, size); 586 ptr = alloc (ptr, size);
395 587
396 if (!ptr && size) 588 if (!ptr && size)
397 { 589 {
590#if EV_AVOID_STDIO
591 write (STDERR_FILENO, "libev: memory allocation failed, aborting.",
592 sizeof ("libev: memory allocation failed, aborting.") - 1);
593#else
398 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 594 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
595#endif
399 abort (); 596 abort ();
400 } 597 }
401 598
402 return ptr; 599 return ptr;
403} 600}
… …
405#define ev_malloc(size) ev_realloc (0, (size)) 602#define ev_malloc(size) ev_realloc (0, (size))
406#define ev_free(ptr) ev_realloc ((ptr), 0) 603#define ev_free(ptr) ev_realloc ((ptr), 0)
407 604
408/*****************************************************************************/ 605/*****************************************************************************/
409 606
607/* set in reify when reification needed */
608#define EV_ANFD_REIFY 1
609
610/* file descriptor info structure */
410typedef struct 611typedef struct
411{ 612{
412 WL head; 613 WL head;
413 unsigned char events; 614 unsigned char events; /* the events watched for */
615 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
616 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
414 unsigned char reify; 617 unsigned char unused;
618#if EV_USE_EPOLL
619 unsigned int egen; /* generation counter to counter epoll bugs */
620#endif
415#if EV_SELECT_IS_WINSOCKET 621#if EV_SELECT_IS_WINSOCKET
416 SOCKET handle; 622 SOCKET handle;
417#endif 623#endif
418} ANFD; 624} ANFD;
419 625
626/* stores the pending event set for a given watcher */
420typedef struct 627typedef struct
421{ 628{
422 W w; 629 W w;
423 int events; 630 int events; /* the pending event set for the given watcher */
424} ANPENDING; 631} ANPENDING;
425 632
426#if EV_USE_INOTIFY 633#if EV_USE_INOTIFY
427/* hash table entry per inotify-id */ 634/* hash table entry per inotify-id */
428typedef struct 635typedef struct
… …
430 WL head; 637 WL head;
431} ANFS; 638} ANFS;
432#endif 639#endif
433 640
434/* Heap Entry */ 641/* Heap Entry */
435#define EV_HEAP_CACHE_AT 0
436#if EV_HEAP_CACHE_AT 642#if EV_HEAP_CACHE_AT
643 /* a heap element */
437 typedef struct { 644 typedef struct {
645 ev_tstamp at;
438 WT w; 646 WT w;
439 ev_tstamp at;
440 } ANHE; 647 } ANHE;
441 648
442 #define ANHE_w(he) (he).w /* access watcher, read-write */ 649 #define ANHE_w(he) (he).w /* access watcher, read-write */
443 #define ANHE_at(he) (he).at /* access cached at, read-only */ 650 #define ANHE_at(he) (he).at /* access cached at, read-only */
444 #define ANHE_at_set(he) (he).at = (he).w->at /* update at from watcher */ 651 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
445#else 652#else
653 /* a heap element */
446 typedef WT ANHE; 654 typedef WT ANHE;
447 655
448 #define ANHE_w(he) (he) 656 #define ANHE_w(he) (he)
449 #define ANHE_at(he) (he)->at 657 #define ANHE_at(he) (he)->at
450 #define ANHE_at_set(he) 658 #define ANHE_at_cache(he)
451#endif 659#endif
452 660
453#if EV_MULTIPLICITY 661#if EV_MULTIPLICITY
454 662
455 struct ev_loop 663 struct ev_loop
… …
474 682
475 static int ev_default_loop_ptr; 683 static int ev_default_loop_ptr;
476 684
477#endif 685#endif
478 686
687#if EV_MINIMAL < 2
688# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
689# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
690# define EV_INVOKE_PENDING invoke_cb (EV_A)
691#else
692# define EV_RELEASE_CB (void)0
693# define EV_ACQUIRE_CB (void)0
694# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
695#endif
696
697#define EVUNLOOP_RECURSE 0x80
698
479/*****************************************************************************/ 699/*****************************************************************************/
480 700
701#ifndef EV_HAVE_EV_TIME
481ev_tstamp 702ev_tstamp
482ev_time (void) 703ev_time (void)
483{ 704{
484#if EV_USE_REALTIME 705#if EV_USE_REALTIME
706 if (expect_true (have_realtime))
707 {
485 struct timespec ts; 708 struct timespec ts;
486 clock_gettime (CLOCK_REALTIME, &ts); 709 clock_gettime (CLOCK_REALTIME, &ts);
487 return ts.tv_sec + ts.tv_nsec * 1e-9; 710 return ts.tv_sec + ts.tv_nsec * 1e-9;
488#else 711 }
712#endif
713
489 struct timeval tv; 714 struct timeval tv;
490 gettimeofday (&tv, 0); 715 gettimeofday (&tv, 0);
491 return tv.tv_sec + tv.tv_usec * 1e-6; 716 return tv.tv_sec + tv.tv_usec * 1e-6;
492#endif
493} 717}
718#endif
494 719
495ev_tstamp inline_size 720inline_size ev_tstamp
496get_clock (void) 721get_clock (void)
497{ 722{
498#if EV_USE_MONOTONIC 723#if EV_USE_MONOTONIC
499 if (expect_true (have_monotonic)) 724 if (expect_true (have_monotonic))
500 { 725 {
… …
533 struct timeval tv; 758 struct timeval tv;
534 759
535 tv.tv_sec = (time_t)delay; 760 tv.tv_sec = (time_t)delay;
536 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 761 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
537 762
763 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
764 /* something not guaranteed by newer posix versions, but guaranteed */
765 /* by older ones */
538 select (0, 0, 0, 0, &tv); 766 select (0, 0, 0, 0, &tv);
539#endif 767#endif
540 } 768 }
541} 769}
542 770
543/*****************************************************************************/ 771/*****************************************************************************/
544 772
545#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 773#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
546 774
547int inline_size 775/* find a suitable new size for the given array, */
776/* hopefully by rounding to a ncie-to-malloc size */
777inline_size int
548array_nextsize (int elem, int cur, int cnt) 778array_nextsize (int elem, int cur, int cnt)
549{ 779{
550 int ncur = cur + 1; 780 int ncur = cur + 1;
551 781
552 do 782 do
… …
569array_realloc (int elem, void *base, int *cur, int cnt) 799array_realloc (int elem, void *base, int *cur, int cnt)
570{ 800{
571 *cur = array_nextsize (elem, *cur, cnt); 801 *cur = array_nextsize (elem, *cur, cnt);
572 return ev_realloc (base, elem * *cur); 802 return ev_realloc (base, elem * *cur);
573} 803}
804
805#define array_init_zero(base,count) \
806 memset ((void *)(base), 0, sizeof (*(base)) * (count))
574 807
575#define array_needsize(type,base,cur,cnt,init) \ 808#define array_needsize(type,base,cur,cnt,init) \
576 if (expect_false ((cnt) > (cur))) \ 809 if (expect_false ((cnt) > (cur))) \
577 { \ 810 { \
578 int ocur_ = (cur); \ 811 int ocur_ = (cur); \
… …
590 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 823 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
591 } 824 }
592#endif 825#endif
593 826
594#define array_free(stem, idx) \ 827#define array_free(stem, idx) \
595 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 828 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
596 829
597/*****************************************************************************/ 830/*****************************************************************************/
831
832/* dummy callback for pending events */
833static void noinline
834pendingcb (EV_P_ ev_prepare *w, int revents)
835{
836}
598 837
599void noinline 838void noinline
600ev_feed_event (EV_P_ void *w, int revents) 839ev_feed_event (EV_P_ void *w, int revents)
601{ 840{
602 W w_ = (W)w; 841 W w_ = (W)w;
… …
611 pendings [pri][w_->pending - 1].w = w_; 850 pendings [pri][w_->pending - 1].w = w_;
612 pendings [pri][w_->pending - 1].events = revents; 851 pendings [pri][w_->pending - 1].events = revents;
613 } 852 }
614} 853}
615 854
616void inline_speed 855inline_speed void
856feed_reverse (EV_P_ W w)
857{
858 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
859 rfeeds [rfeedcnt++] = w;
860}
861
862inline_size void
863feed_reverse_done (EV_P_ int revents)
864{
865 do
866 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
867 while (rfeedcnt);
868}
869
870inline_speed void
617queue_events (EV_P_ W *events, int eventcnt, int type) 871queue_events (EV_P_ W *events, int eventcnt, int type)
618{ 872{
619 int i; 873 int i;
620 874
621 for (i = 0; i < eventcnt; ++i) 875 for (i = 0; i < eventcnt; ++i)
622 ev_feed_event (EV_A_ events [i], type); 876 ev_feed_event (EV_A_ events [i], type);
623} 877}
624 878
625/*****************************************************************************/ 879/*****************************************************************************/
626 880
627void inline_size 881inline_speed void
628anfds_init (ANFD *base, int count)
629{
630 while (count--)
631 {
632 base->head = 0;
633 base->events = EV_NONE;
634 base->reify = 0;
635
636 ++base;
637 }
638}
639
640void inline_speed
641fd_event (EV_P_ int fd, int revents) 882fd_event_nc (EV_P_ int fd, int revents)
642{ 883{
643 ANFD *anfd = anfds + fd; 884 ANFD *anfd = anfds + fd;
644 ev_io *w; 885 ev_io *w;
645 886
646 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 887 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
650 if (ev) 891 if (ev)
651 ev_feed_event (EV_A_ (W)w, ev); 892 ev_feed_event (EV_A_ (W)w, ev);
652 } 893 }
653} 894}
654 895
896/* do not submit kernel events for fds that have reify set */
897/* because that means they changed while we were polling for new events */
898inline_speed void
899fd_event (EV_P_ int fd, int revents)
900{
901 ANFD *anfd = anfds + fd;
902
903 if (expect_true (!anfd->reify))
904 fd_event_nc (EV_A_ fd, revents);
905}
906
655void 907void
656ev_feed_fd_event (EV_P_ int fd, int revents) 908ev_feed_fd_event (EV_P_ int fd, int revents)
657{ 909{
658 if (fd >= 0 && fd < anfdmax) 910 if (fd >= 0 && fd < anfdmax)
659 fd_event (EV_A_ fd, revents); 911 fd_event_nc (EV_A_ fd, revents);
660} 912}
661 913
662void inline_size 914/* make sure the external fd watch events are in-sync */
915/* with the kernel/libev internal state */
916inline_size void
663fd_reify (EV_P) 917fd_reify (EV_P)
664{ 918{
665 int i; 919 int i;
666 920
667 for (i = 0; i < fdchangecnt; ++i) 921 for (i = 0; i < fdchangecnt; ++i)
… …
676 events |= (unsigned char)w->events; 930 events |= (unsigned char)w->events;
677 931
678#if EV_SELECT_IS_WINSOCKET 932#if EV_SELECT_IS_WINSOCKET
679 if (events) 933 if (events)
680 { 934 {
681 unsigned long argp; 935 unsigned long arg;
682 #ifdef EV_FD_TO_WIN32_HANDLE
683 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 936 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
684 #else
685 anfd->handle = _get_osfhandle (fd);
686 #endif
687 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 937 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
688 } 938 }
689#endif 939#endif
690 940
691 { 941 {
692 unsigned char o_events = anfd->events; 942 unsigned char o_events = anfd->events;
693 unsigned char o_reify = anfd->reify; 943 unsigned char o_reify = anfd->reify;
694 944
695 anfd->reify = 0; 945 anfd->reify = 0;
696 anfd->events = events; 946 anfd->events = events;
697 947
698 if (o_events != events || o_reify & EV_IOFDSET) 948 if (o_events != events || o_reify & EV__IOFDSET)
699 backend_modify (EV_A_ fd, o_events, events); 949 backend_modify (EV_A_ fd, o_events, events);
700 } 950 }
701 } 951 }
702 952
703 fdchangecnt = 0; 953 fdchangecnt = 0;
704} 954}
705 955
706void inline_size 956/* something about the given fd changed */
957inline_size void
707fd_change (EV_P_ int fd, int flags) 958fd_change (EV_P_ int fd, int flags)
708{ 959{
709 unsigned char reify = anfds [fd].reify; 960 unsigned char reify = anfds [fd].reify;
710 anfds [fd].reify |= flags; 961 anfds [fd].reify |= flags;
711 962
… …
715 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 966 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
716 fdchanges [fdchangecnt - 1] = fd; 967 fdchanges [fdchangecnt - 1] = fd;
717 } 968 }
718} 969}
719 970
720void inline_speed 971/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
972inline_speed void
721fd_kill (EV_P_ int fd) 973fd_kill (EV_P_ int fd)
722{ 974{
723 ev_io *w; 975 ev_io *w;
724 976
725 while ((w = (ev_io *)anfds [fd].head)) 977 while ((w = (ev_io *)anfds [fd].head))
… …
727 ev_io_stop (EV_A_ w); 979 ev_io_stop (EV_A_ w);
728 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 980 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
729 } 981 }
730} 982}
731 983
732int inline_size 984/* check whether the given fd is atcually valid, for error recovery */
985inline_size int
733fd_valid (int fd) 986fd_valid (int fd)
734{ 987{
735#ifdef _WIN32 988#ifdef _WIN32
736 return _get_osfhandle (fd) != -1; 989 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
737#else 990#else
738 return fcntl (fd, F_GETFD) != -1; 991 return fcntl (fd, F_GETFD) != -1;
739#endif 992#endif
740} 993}
741 994
… …
745{ 998{
746 int fd; 999 int fd;
747 1000
748 for (fd = 0; fd < anfdmax; ++fd) 1001 for (fd = 0; fd < anfdmax; ++fd)
749 if (anfds [fd].events) 1002 if (anfds [fd].events)
750 if (!fd_valid (fd) == -1 && errno == EBADF) 1003 if (!fd_valid (fd) && errno == EBADF)
751 fd_kill (EV_A_ fd); 1004 fd_kill (EV_A_ fd);
752} 1005}
753 1006
754/* called on ENOMEM in select/poll to kill some fds and retry */ 1007/* called on ENOMEM in select/poll to kill some fds and retry */
755static void noinline 1008static void noinline
… …
759 1012
760 for (fd = anfdmax; fd--; ) 1013 for (fd = anfdmax; fd--; )
761 if (anfds [fd].events) 1014 if (anfds [fd].events)
762 { 1015 {
763 fd_kill (EV_A_ fd); 1016 fd_kill (EV_A_ fd);
764 return; 1017 break;
765 } 1018 }
766} 1019}
767 1020
768/* usually called after fork if backend needs to re-arm all fds from scratch */ 1021/* usually called after fork if backend needs to re-arm all fds from scratch */
769static void noinline 1022static void noinline
… …
773 1026
774 for (fd = 0; fd < anfdmax; ++fd) 1027 for (fd = 0; fd < anfdmax; ++fd)
775 if (anfds [fd].events) 1028 if (anfds [fd].events)
776 { 1029 {
777 anfds [fd].events = 0; 1030 anfds [fd].events = 0;
1031 anfds [fd].emask = 0;
778 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1032 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
779 } 1033 }
780} 1034}
781 1035
782/*****************************************************************************/ 1036/*****************************************************************************/
783 1037
… …
791 * at the moment we allow libev the luxury of two heaps, 1045 * at the moment we allow libev the luxury of two heaps,
792 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap 1046 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
793 * which is more cache-efficient. 1047 * which is more cache-efficient.
794 * the difference is about 5% with 50000+ watchers. 1048 * the difference is about 5% with 50000+ watchers.
795 */ 1049 */
796#define EV_USE_4HEAP !EV_MINIMAL
797#if EV_USE_4HEAP 1050#if EV_USE_4HEAP
798 1051
799#define DHEAP 4 1052#define DHEAP 4
800#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1053#define HEAP0 (DHEAP - 1) /* index of first element in heap */
801 1054#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
802/* towards the root */ 1055#define UPHEAP_DONE(p,k) ((p) == (k))
803void inline_speed
804upheap (ANHE *heap, int k)
805{
806 ANHE he = heap [k];
807
808 for (;;)
809 {
810 int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
811
812 if (p == k || ANHE_at (heap [p]) <= ANHE_at (he))
813 break;
814
815 heap [k] = heap [p];
816 ev_active (ANHE_w (heap [k])) = k;
817 k = p;
818 }
819
820 ev_active (ANHE_w (he)) = k;
821 heap [k] = he;
822}
823 1056
824/* away from the root */ 1057/* away from the root */
825void inline_speed 1058inline_speed void
826downheap (ANHE *heap, int N, int k) 1059downheap (ANHE *heap, int N, int k)
827{ 1060{
828 ANHE he = heap [k]; 1061 ANHE he = heap [k];
829 ANHE *E = heap + N + HEAP0; 1062 ANHE *E = heap + N + HEAP0;
830 1063
831 for (;;) 1064 for (;;)
832 { 1065 {
833 ev_tstamp minat; 1066 ev_tstamp minat;
834 ANHE *minpos; 1067 ANHE *minpos;
835 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0; 1068 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
836 1069
837 // find minimum child 1070 /* find minimum child */
838 if (expect_true (pos + DHEAP - 1 < E)) 1071 if (expect_true (pos + DHEAP - 1 < E))
839 { 1072 {
840 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 1073 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
841 if (ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 1074 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
842 if (ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 1075 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
843 if (ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 1076 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
844 } 1077 }
845 else if (pos < E) 1078 else if (pos < E)
846 { 1079 {
847 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 1080 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
848 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 1081 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
… …
853 break; 1086 break;
854 1087
855 if (ANHE_at (he) <= minat) 1088 if (ANHE_at (he) <= minat)
856 break; 1089 break;
857 1090
1091 heap [k] = *minpos;
858 ev_active (ANHE_w (*minpos)) = k; 1092 ev_active (ANHE_w (*minpos)) = k;
859 heap [k] = *minpos;
860 1093
861 k = minpos - heap; 1094 k = minpos - heap;
862 } 1095 }
863 1096
1097 heap [k] = he;
864 ev_active (ANHE_w (he)) = k; 1098 ev_active (ANHE_w (he)) = k;
865 heap [k] = he;
866} 1099}
867 1100
868#else // 4HEAP 1101#else /* 4HEAP */
869 1102
870#define HEAP0 1 1103#define HEAP0 1
1104#define HPARENT(k) ((k) >> 1)
1105#define UPHEAP_DONE(p,k) (!(p))
871 1106
872/* towards the root */ 1107/* away from the root */
873void inline_speed 1108inline_speed void
874upheap (ANHE *heap, int k) 1109downheap (ANHE *heap, int N, int k)
875{ 1110{
876 ANHE he = heap [k]; 1111 ANHE he = heap [k];
877 1112
878 for (;;) 1113 for (;;)
879 { 1114 {
880 int p = k >> 1; 1115 int c = k << 1;
881 1116
882 /* maybe we could use a dummy element at heap [0]? */ 1117 if (c >= N + HEAP0)
883 if (!p || ANHE_at (heap [p]) <= ANHE_at (he))
884 break; 1118 break;
885 1119
886 heap [k] = heap [p];
887 ev_active (ANHE_w (heap [k])) = k;
888 k = p;
889 }
890
891 heap [k] = w;
892 ev_active (ANHE_w (heap [k])) = k;
893}
894
895/* away from the root */
896void inline_speed
897downheap (ANHE *heap, int N, int k)
898{
899 ANHE he = heap [k];
900
901 for (;;)
902 {
903 int c = k << 1;
904
905 if (c > N)
906 break;
907
908 c += c + 1 < N && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1120 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
909 ? 1 : 0; 1121 ? 1 : 0;
910 1122
911 if (w->at <= ANHE_at (heap [c])) 1123 if (ANHE_at (he) <= ANHE_at (heap [c]))
912 break; 1124 break;
913 1125
914 heap [k] = heap [c]; 1126 heap [k] = heap [c];
915 ev_active (ANHE_w (heap [k])) = k; 1127 ev_active (ANHE_w (heap [k])) = k;
916 1128
… …
920 heap [k] = he; 1132 heap [k] = he;
921 ev_active (ANHE_w (he)) = k; 1133 ev_active (ANHE_w (he)) = k;
922} 1134}
923#endif 1135#endif
924 1136
925void inline_size 1137/* towards the root */
1138inline_speed void
1139upheap (ANHE *heap, int k)
1140{
1141 ANHE he = heap [k];
1142
1143 for (;;)
1144 {
1145 int p = HPARENT (k);
1146
1147 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1148 break;
1149
1150 heap [k] = heap [p];
1151 ev_active (ANHE_w (heap [k])) = k;
1152 k = p;
1153 }
1154
1155 heap [k] = he;
1156 ev_active (ANHE_w (he)) = k;
1157}
1158
1159/* move an element suitably so it is in a correct place */
1160inline_size void
926adjustheap (ANHE *heap, int N, int k) 1161adjustheap (ANHE *heap, int N, int k)
927{ 1162{
1163 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
928 upheap (heap, k); 1164 upheap (heap, k);
1165 else
929 downheap (heap, N, k); 1166 downheap (heap, N, k);
1167}
1168
1169/* rebuild the heap: this function is used only once and executed rarely */
1170inline_size void
1171reheap (ANHE *heap, int N)
1172{
1173 int i;
1174
1175 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1176 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1177 for (i = 0; i < N; ++i)
1178 upheap (heap, i + HEAP0);
930} 1179}
931 1180
932/*****************************************************************************/ 1181/*****************************************************************************/
933 1182
1183/* associate signal watchers to a signal signal */
934typedef struct 1184typedef struct
935{ 1185{
1186 EV_ATOMIC_T pending;
1187#if EV_MULTIPLICITY
1188 EV_P;
1189#endif
936 WL head; 1190 WL head;
937 EV_ATOMIC_T gotsig;
938} ANSIG; 1191} ANSIG;
939 1192
940static ANSIG *signals; 1193static ANSIG signals [EV_NSIG - 1];
941static int signalmax;
942
943static EV_ATOMIC_T gotsig;
944
945void inline_size
946signals_init (ANSIG *base, int count)
947{
948 while (count--)
949 {
950 base->head = 0;
951 base->gotsig = 0;
952
953 ++base;
954 }
955}
956 1194
957/*****************************************************************************/ 1195/*****************************************************************************/
958 1196
959void inline_speed 1197/* used to prepare libev internal fd's */
1198/* this is not fork-safe */
1199inline_speed void
960fd_intern (int fd) 1200fd_intern (int fd)
961{ 1201{
962#ifdef _WIN32 1202#ifdef _WIN32
963 int arg = 1; 1203 unsigned long arg = 1;
964 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1204 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
965#else 1205#else
966 fcntl (fd, F_SETFD, FD_CLOEXEC); 1206 fcntl (fd, F_SETFD, FD_CLOEXEC);
967 fcntl (fd, F_SETFL, O_NONBLOCK); 1207 fcntl (fd, F_SETFL, O_NONBLOCK);
968#endif 1208#endif
969} 1209}
970 1210
971static void noinline 1211static void noinline
972evpipe_init (EV_P) 1212evpipe_init (EV_P)
973{ 1213{
974 if (!ev_is_active (&pipeev)) 1214 if (!ev_is_active (&pipe_w))
975 { 1215 {
976#if EV_USE_EVENTFD 1216#if EV_USE_EVENTFD
1217 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1218 if (evfd < 0 && errno == EINVAL)
977 if ((evfd = eventfd (0, 0)) >= 0) 1219 evfd = eventfd (0, 0);
1220
1221 if (evfd >= 0)
978 { 1222 {
979 evpipe [0] = -1; 1223 evpipe [0] = -1;
980 fd_intern (evfd); 1224 fd_intern (evfd); /* doing it twice doesn't hurt */
981 ev_io_set (&pipeev, evfd, EV_READ); 1225 ev_io_set (&pipe_w, evfd, EV_READ);
982 } 1226 }
983 else 1227 else
984#endif 1228#endif
985 { 1229 {
986 while (pipe (evpipe)) 1230 while (pipe (evpipe))
987 syserr ("(libev) error creating signal/async pipe"); 1231 ev_syserr ("(libev) error creating signal/async pipe");
988 1232
989 fd_intern (evpipe [0]); 1233 fd_intern (evpipe [0]);
990 fd_intern (evpipe [1]); 1234 fd_intern (evpipe [1]);
991 ev_io_set (&pipeev, evpipe [0], EV_READ); 1235 ev_io_set (&pipe_w, evpipe [0], EV_READ);
992 } 1236 }
993 1237
994 ev_io_start (EV_A_ &pipeev); 1238 ev_io_start (EV_A_ &pipe_w);
995 ev_unref (EV_A); /* watcher should not keep loop alive */ 1239 ev_unref (EV_A); /* watcher should not keep loop alive */
996 } 1240 }
997} 1241}
998 1242
999void inline_size 1243inline_size void
1000evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1244evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1001{ 1245{
1002 if (!*flag) 1246 if (!*flag)
1003 { 1247 {
1004 int old_errno = errno; /* save errno because write might clobber it */ 1248 int old_errno = errno; /* save errno because write might clobber it */
… …
1017 1261
1018 errno = old_errno; 1262 errno = old_errno;
1019 } 1263 }
1020} 1264}
1021 1265
1266/* called whenever the libev signal pipe */
1267/* got some events (signal, async) */
1022static void 1268static void
1023pipecb (EV_P_ ev_io *iow, int revents) 1269pipecb (EV_P_ ev_io *iow, int revents)
1024{ 1270{
1271 int i;
1272
1025#if EV_USE_EVENTFD 1273#if EV_USE_EVENTFD
1026 if (evfd >= 0) 1274 if (evfd >= 0)
1027 { 1275 {
1028 uint64_t counter; 1276 uint64_t counter;
1029 read (evfd, &counter, sizeof (uint64_t)); 1277 read (evfd, &counter, sizeof (uint64_t));
… …
1033 { 1281 {
1034 char dummy; 1282 char dummy;
1035 read (evpipe [0], &dummy, 1); 1283 read (evpipe [0], &dummy, 1);
1036 } 1284 }
1037 1285
1038 if (gotsig && ev_is_default_loop (EV_A)) 1286 if (sig_pending)
1039 { 1287 {
1040 int signum; 1288 sig_pending = 0;
1041 gotsig = 0;
1042 1289
1043 for (signum = signalmax; signum--; ) 1290 for (i = EV_NSIG - 1; i--; )
1044 if (signals [signum].gotsig) 1291 if (expect_false (signals [i].pending))
1045 ev_feed_signal_event (EV_A_ signum + 1); 1292 ev_feed_signal_event (EV_A_ i + 1);
1046 } 1293 }
1047 1294
1048#if EV_ASYNC_ENABLE 1295#if EV_ASYNC_ENABLE
1049 if (gotasync) 1296 if (async_pending)
1050 { 1297 {
1051 int i; 1298 async_pending = 0;
1052 gotasync = 0;
1053 1299
1054 for (i = asynccnt; i--; ) 1300 for (i = asynccnt; i--; )
1055 if (asyncs [i]->sent) 1301 if (asyncs [i]->sent)
1056 { 1302 {
1057 asyncs [i]->sent = 0; 1303 asyncs [i]->sent = 0;
… …
1065 1311
1066static void 1312static void
1067ev_sighandler (int signum) 1313ev_sighandler (int signum)
1068{ 1314{
1069#if EV_MULTIPLICITY 1315#if EV_MULTIPLICITY
1070 struct ev_loop *loop = &default_loop_struct; 1316 EV_P = signals [signum - 1].loop;
1071#endif 1317#endif
1072 1318
1073#if _WIN32 1319#ifdef _WIN32
1074 signal (signum, ev_sighandler); 1320 signal (signum, ev_sighandler);
1075#endif 1321#endif
1076 1322
1077 signals [signum - 1].gotsig = 1; 1323 signals [signum - 1].pending = 1;
1078 evpipe_write (EV_A_ &gotsig); 1324 evpipe_write (EV_A_ &sig_pending);
1079} 1325}
1080 1326
1081void noinline 1327void noinline
1082ev_feed_signal_event (EV_P_ int signum) 1328ev_feed_signal_event (EV_P_ int signum)
1083{ 1329{
1084 WL w; 1330 WL w;
1085 1331
1332 if (expect_false (signum <= 0 || signum > EV_NSIG))
1333 return;
1334
1335 --signum;
1336
1086#if EV_MULTIPLICITY 1337#if EV_MULTIPLICITY
1087 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1338 /* it is permissible to try to feed a signal to the wrong loop */
1088#endif 1339 /* or, likely more useful, feeding a signal nobody is waiting for */
1089 1340
1090 --signum; 1341 if (expect_false (signals [signum].loop != EV_A))
1091
1092 if (signum < 0 || signum >= signalmax)
1093 return; 1342 return;
1343#endif
1094 1344
1095 signals [signum].gotsig = 0; 1345 signals [signum].pending = 0;
1096 1346
1097 for (w = signals [signum].head; w; w = w->next) 1347 for (w = signals [signum].head; w; w = w->next)
1098 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1348 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1099} 1349}
1100 1350
1351#if EV_USE_SIGNALFD
1352static void
1353sigfdcb (EV_P_ ev_io *iow, int revents)
1354{
1355 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1356
1357 for (;;)
1358 {
1359 ssize_t res = read (sigfd, si, sizeof (si));
1360
1361 /* not ISO-C, as res might be -1, but works with SuS */
1362 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1363 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1364
1365 if (res < (ssize_t)sizeof (si))
1366 break;
1367 }
1368}
1369#endif
1370
1101/*****************************************************************************/ 1371/*****************************************************************************/
1102 1372
1103static WL childs [EV_PID_HASHSIZE]; 1373static WL childs [EV_PID_HASHSIZE];
1104 1374
1105#ifndef _WIN32 1375#ifndef _WIN32
… …
1108 1378
1109#ifndef WIFCONTINUED 1379#ifndef WIFCONTINUED
1110# define WIFCONTINUED(status) 0 1380# define WIFCONTINUED(status) 0
1111#endif 1381#endif
1112 1382
1113void inline_speed 1383/* handle a single child status event */
1384inline_speed void
1114child_reap (EV_P_ int chain, int pid, int status) 1385child_reap (EV_P_ int chain, int pid, int status)
1115{ 1386{
1116 ev_child *w; 1387 ev_child *w;
1117 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1388 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1118 1389
… …
1131 1402
1132#ifndef WCONTINUED 1403#ifndef WCONTINUED
1133# define WCONTINUED 0 1404# define WCONTINUED 0
1134#endif 1405#endif
1135 1406
1407/* called on sigchld etc., calls waitpid */
1136static void 1408static void
1137childcb (EV_P_ ev_signal *sw, int revents) 1409childcb (EV_P_ ev_signal *sw, int revents)
1138{ 1410{
1139 int pid, status; 1411 int pid, status;
1140 1412
… …
1221 /* kqueue is borked on everything but netbsd apparently */ 1493 /* kqueue is borked on everything but netbsd apparently */
1222 /* it usually doesn't work correctly on anything but sockets and pipes */ 1494 /* it usually doesn't work correctly on anything but sockets and pipes */
1223 flags &= ~EVBACKEND_KQUEUE; 1495 flags &= ~EVBACKEND_KQUEUE;
1224#endif 1496#endif
1225#ifdef __APPLE__ 1497#ifdef __APPLE__
1226 // flags &= ~EVBACKEND_KQUEUE; for documentation 1498 /* only select works correctly on that "unix-certified" platform */
1227 flags &= ~EVBACKEND_POLL; 1499 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1500 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1228#endif 1501#endif
1229 1502
1230 return flags; 1503 return flags;
1231} 1504}
1232 1505
… …
1246ev_backend (EV_P) 1519ev_backend (EV_P)
1247{ 1520{
1248 return backend; 1521 return backend;
1249} 1522}
1250 1523
1524#if EV_MINIMAL < 2
1251unsigned int 1525unsigned int
1252ev_loop_count (EV_P) 1526ev_loop_count (EV_P)
1253{ 1527{
1254 return loop_count; 1528 return loop_count;
1255} 1529}
1256 1530
1531unsigned int
1532ev_loop_depth (EV_P)
1533{
1534 return loop_depth;
1535}
1536
1257void 1537void
1258ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1538ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1259{ 1539{
1260 io_blocktime = interval; 1540 io_blocktime = interval;
1261} 1541}
… …
1264ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1544ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1265{ 1545{
1266 timeout_blocktime = interval; 1546 timeout_blocktime = interval;
1267} 1547}
1268 1548
1549void
1550ev_set_userdata (EV_P_ void *data)
1551{
1552 userdata = data;
1553}
1554
1555void *
1556ev_userdata (EV_P)
1557{
1558 return userdata;
1559}
1560
1561void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1562{
1563 invoke_cb = invoke_pending_cb;
1564}
1565
1566void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1567{
1568 release_cb = release;
1569 acquire_cb = acquire;
1570}
1571#endif
1572
1573/* initialise a loop structure, must be zero-initialised */
1269static void noinline 1574static void noinline
1270loop_init (EV_P_ unsigned int flags) 1575loop_init (EV_P_ unsigned int flags)
1271{ 1576{
1272 if (!backend) 1577 if (!backend)
1273 { 1578 {
1579#if EV_USE_REALTIME
1580 if (!have_realtime)
1581 {
1582 struct timespec ts;
1583
1584 if (!clock_gettime (CLOCK_REALTIME, &ts))
1585 have_realtime = 1;
1586 }
1587#endif
1588
1274#if EV_USE_MONOTONIC 1589#if EV_USE_MONOTONIC
1590 if (!have_monotonic)
1275 { 1591 {
1276 struct timespec ts; 1592 struct timespec ts;
1593
1277 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1594 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1278 have_monotonic = 1; 1595 have_monotonic = 1;
1279 } 1596 }
1280#endif 1597#endif
1598
1599 /* pid check not overridable via env */
1600#ifndef _WIN32
1601 if (flags & EVFLAG_FORKCHECK)
1602 curpid = getpid ();
1603#endif
1604
1605 if (!(flags & EVFLAG_NOENV)
1606 && !enable_secure ()
1607 && getenv ("LIBEV_FLAGS"))
1608 flags = atoi (getenv ("LIBEV_FLAGS"));
1281 1609
1282 ev_rt_now = ev_time (); 1610 ev_rt_now = ev_time ();
1283 mn_now = get_clock (); 1611 mn_now = get_clock ();
1284 now_floor = mn_now; 1612 now_floor = mn_now;
1285 rtmn_diff = ev_rt_now - mn_now; 1613 rtmn_diff = ev_rt_now - mn_now;
1614#if EV_MINIMAL < 2
1615 invoke_cb = ev_invoke_pending;
1616#endif
1286 1617
1287 io_blocktime = 0.; 1618 io_blocktime = 0.;
1288 timeout_blocktime = 0.; 1619 timeout_blocktime = 0.;
1289 backend = 0; 1620 backend = 0;
1290 backend_fd = -1; 1621 backend_fd = -1;
1291 gotasync = 0; 1622 sig_pending = 0;
1623#if EV_ASYNC_ENABLE
1624 async_pending = 0;
1625#endif
1292#if EV_USE_INOTIFY 1626#if EV_USE_INOTIFY
1293 fs_fd = -2; 1627 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1294#endif 1628#endif
1295 1629#if EV_USE_SIGNALFD
1296 /* pid check not overridable via env */ 1630 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1297#ifndef _WIN32
1298 if (flags & EVFLAG_FORKCHECK)
1299 curpid = getpid ();
1300#endif 1631#endif
1301
1302 if (!(flags & EVFLAG_NOENV)
1303 && !enable_secure ()
1304 && getenv ("LIBEV_FLAGS"))
1305 flags = atoi (getenv ("LIBEV_FLAGS"));
1306 1632
1307 if (!(flags & 0x0000ffffU)) 1633 if (!(flags & 0x0000ffffU))
1308 flags |= ev_recommended_backends (); 1634 flags |= ev_recommended_backends ();
1309 1635
1310#if EV_USE_PORT 1636#if EV_USE_PORT
… …
1321#endif 1647#endif
1322#if EV_USE_SELECT 1648#if EV_USE_SELECT
1323 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1649 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1324#endif 1650#endif
1325 1651
1652 ev_prepare_init (&pending_w, pendingcb);
1653
1326 ev_init (&pipeev, pipecb); 1654 ev_init (&pipe_w, pipecb);
1327 ev_set_priority (&pipeev, EV_MAXPRI); 1655 ev_set_priority (&pipe_w, EV_MAXPRI);
1328 } 1656 }
1329} 1657}
1330 1658
1659/* free up a loop structure */
1331static void noinline 1660static void noinline
1332loop_destroy (EV_P) 1661loop_destroy (EV_P)
1333{ 1662{
1334 int i; 1663 int i;
1335 1664
1336 if (ev_is_active (&pipeev)) 1665 if (ev_is_active (&pipe_w))
1337 { 1666 {
1338 ev_ref (EV_A); /* signal watcher */ 1667 /*ev_ref (EV_A);*/
1339 ev_io_stop (EV_A_ &pipeev); 1668 /*ev_io_stop (EV_A_ &pipe_w);*/
1340 1669
1341#if EV_USE_EVENTFD 1670#if EV_USE_EVENTFD
1342 if (evfd >= 0) 1671 if (evfd >= 0)
1343 close (evfd); 1672 close (evfd);
1344#endif 1673#endif
1345 1674
1346 if (evpipe [0] >= 0) 1675 if (evpipe [0] >= 0)
1347 { 1676 {
1348 close (evpipe [0]); 1677 EV_WIN32_CLOSE_FD (evpipe [0]);
1349 close (evpipe [1]); 1678 EV_WIN32_CLOSE_FD (evpipe [1]);
1350 } 1679 }
1351 } 1680 }
1681
1682#if EV_USE_SIGNALFD
1683 if (ev_is_active (&sigfd_w))
1684 close (sigfd);
1685#endif
1352 1686
1353#if EV_USE_INOTIFY 1687#if EV_USE_INOTIFY
1354 if (fs_fd >= 0) 1688 if (fs_fd >= 0)
1355 close (fs_fd); 1689 close (fs_fd);
1356#endif 1690#endif
… …
1380#if EV_IDLE_ENABLE 1714#if EV_IDLE_ENABLE
1381 array_free (idle, [i]); 1715 array_free (idle, [i]);
1382#endif 1716#endif
1383 } 1717 }
1384 1718
1385 ev_free (anfds); anfdmax = 0; 1719 ev_free (anfds); anfds = 0; anfdmax = 0;
1386 1720
1387 /* have to use the microsoft-never-gets-it-right macro */ 1721 /* have to use the microsoft-never-gets-it-right macro */
1722 array_free (rfeed, EMPTY);
1388 array_free (fdchange, EMPTY); 1723 array_free (fdchange, EMPTY);
1389 array_free (timer, EMPTY); 1724 array_free (timer, EMPTY);
1390#if EV_PERIODIC_ENABLE 1725#if EV_PERIODIC_ENABLE
1391 array_free (periodic, EMPTY); 1726 array_free (periodic, EMPTY);
1392#endif 1727#endif
… …
1401 1736
1402 backend = 0; 1737 backend = 0;
1403} 1738}
1404 1739
1405#if EV_USE_INOTIFY 1740#if EV_USE_INOTIFY
1406void inline_size infy_fork (EV_P); 1741inline_size void infy_fork (EV_P);
1407#endif 1742#endif
1408 1743
1409void inline_size 1744inline_size void
1410loop_fork (EV_P) 1745loop_fork (EV_P)
1411{ 1746{
1412#if EV_USE_PORT 1747#if EV_USE_PORT
1413 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1748 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1414#endif 1749#endif
… …
1420#endif 1755#endif
1421#if EV_USE_INOTIFY 1756#if EV_USE_INOTIFY
1422 infy_fork (EV_A); 1757 infy_fork (EV_A);
1423#endif 1758#endif
1424 1759
1425 if (ev_is_active (&pipeev)) 1760 if (ev_is_active (&pipe_w))
1426 { 1761 {
1427 /* this "locks" the handlers against writing to the pipe */ 1762 /* this "locks" the handlers against writing to the pipe */
1428 /* while we modify the fd vars */ 1763 /* while we modify the fd vars */
1429 gotsig = 1; 1764 sig_pending = 1;
1430#if EV_ASYNC_ENABLE 1765#if EV_ASYNC_ENABLE
1431 gotasync = 1; 1766 async_pending = 1;
1432#endif 1767#endif
1433 1768
1434 ev_ref (EV_A); 1769 ev_ref (EV_A);
1435 ev_io_stop (EV_A_ &pipeev); 1770 ev_io_stop (EV_A_ &pipe_w);
1436 1771
1437#if EV_USE_EVENTFD 1772#if EV_USE_EVENTFD
1438 if (evfd >= 0) 1773 if (evfd >= 0)
1439 close (evfd); 1774 close (evfd);
1440#endif 1775#endif
1441 1776
1442 if (evpipe [0] >= 0) 1777 if (evpipe [0] >= 0)
1443 { 1778 {
1444 close (evpipe [0]); 1779 EV_WIN32_CLOSE_FD (evpipe [0]);
1445 close (evpipe [1]); 1780 EV_WIN32_CLOSE_FD (evpipe [1]);
1446 } 1781 }
1447 1782
1448 evpipe_init (EV_A); 1783 evpipe_init (EV_A);
1449 /* now iterate over everything, in case we missed something */ 1784 /* now iterate over everything, in case we missed something */
1450 pipecb (EV_A_ &pipeev, EV_READ); 1785 pipecb (EV_A_ &pipe_w, EV_READ);
1451 } 1786 }
1452 1787
1453 postfork = 0; 1788 postfork = 0;
1454} 1789}
1455 1790
1456#if EV_MULTIPLICITY 1791#if EV_MULTIPLICITY
1792
1457struct ev_loop * 1793struct ev_loop *
1458ev_loop_new (unsigned int flags) 1794ev_loop_new (unsigned int flags)
1459{ 1795{
1460 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1796 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1461 1797
1462 memset (loop, 0, sizeof (struct ev_loop)); 1798 memset (EV_A, 0, sizeof (struct ev_loop));
1463
1464 loop_init (EV_A_ flags); 1799 loop_init (EV_A_ flags);
1465 1800
1466 if (ev_backend (EV_A)) 1801 if (ev_backend (EV_A))
1467 return loop; 1802 return EV_A;
1468 1803
1469 return 0; 1804 return 0;
1470} 1805}
1471 1806
1472void 1807void
… …
1478 1813
1479void 1814void
1480ev_loop_fork (EV_P) 1815ev_loop_fork (EV_P)
1481{ 1816{
1482 postfork = 1; /* must be in line with ev_default_fork */ 1817 postfork = 1; /* must be in line with ev_default_fork */
1818}
1819#endif /* multiplicity */
1820
1821#if EV_VERIFY
1822static void noinline
1823verify_watcher (EV_P_ W w)
1824{
1825 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1826
1827 if (w->pending)
1828 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1829}
1830
1831static void noinline
1832verify_heap (EV_P_ ANHE *heap, int N)
1833{
1834 int i;
1835
1836 for (i = HEAP0; i < N + HEAP0; ++i)
1837 {
1838 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1839 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1840 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1841
1842 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1843 }
1844}
1845
1846static void noinline
1847array_verify (EV_P_ W *ws, int cnt)
1848{
1849 while (cnt--)
1850 {
1851 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1852 verify_watcher (EV_A_ ws [cnt]);
1853 }
1854}
1855#endif
1856
1857#if EV_MINIMAL < 2
1858void
1859ev_loop_verify (EV_P)
1860{
1861#if EV_VERIFY
1862 int i;
1863 WL w;
1864
1865 assert (activecnt >= -1);
1866
1867 assert (fdchangemax >= fdchangecnt);
1868 for (i = 0; i < fdchangecnt; ++i)
1869 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1870
1871 assert (anfdmax >= 0);
1872 for (i = 0; i < anfdmax; ++i)
1873 for (w = anfds [i].head; w; w = w->next)
1874 {
1875 verify_watcher (EV_A_ (W)w);
1876 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1877 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1878 }
1879
1880 assert (timermax >= timercnt);
1881 verify_heap (EV_A_ timers, timercnt);
1882
1883#if EV_PERIODIC_ENABLE
1884 assert (periodicmax >= periodiccnt);
1885 verify_heap (EV_A_ periodics, periodiccnt);
1886#endif
1887
1888 for (i = NUMPRI; i--; )
1889 {
1890 assert (pendingmax [i] >= pendingcnt [i]);
1891#if EV_IDLE_ENABLE
1892 assert (idleall >= 0);
1893 assert (idlemax [i] >= idlecnt [i]);
1894 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1895#endif
1896 }
1897
1898#if EV_FORK_ENABLE
1899 assert (forkmax >= forkcnt);
1900 array_verify (EV_A_ (W *)forks, forkcnt);
1901#endif
1902
1903#if EV_ASYNC_ENABLE
1904 assert (asyncmax >= asynccnt);
1905 array_verify (EV_A_ (W *)asyncs, asynccnt);
1906#endif
1907
1908 assert (preparemax >= preparecnt);
1909 array_verify (EV_A_ (W *)prepares, preparecnt);
1910
1911 assert (checkmax >= checkcnt);
1912 array_verify (EV_A_ (W *)checks, checkcnt);
1913
1914# if 0
1915 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1916 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1917# endif
1918#endif
1483} 1919}
1484#endif 1920#endif
1485 1921
1486#if EV_MULTIPLICITY 1922#if EV_MULTIPLICITY
1487struct ev_loop * 1923struct ev_loop *
… …
1492#endif 1928#endif
1493{ 1929{
1494 if (!ev_default_loop_ptr) 1930 if (!ev_default_loop_ptr)
1495 { 1931 {
1496#if EV_MULTIPLICITY 1932#if EV_MULTIPLICITY
1497 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1933 EV_P = ev_default_loop_ptr = &default_loop_struct;
1498#else 1934#else
1499 ev_default_loop_ptr = 1; 1935 ev_default_loop_ptr = 1;
1500#endif 1936#endif
1501 1937
1502 loop_init (EV_A_ flags); 1938 loop_init (EV_A_ flags);
… …
1519 1955
1520void 1956void
1521ev_default_destroy (void) 1957ev_default_destroy (void)
1522{ 1958{
1523#if EV_MULTIPLICITY 1959#if EV_MULTIPLICITY
1524 struct ev_loop *loop = ev_default_loop_ptr; 1960 EV_P = ev_default_loop_ptr;
1525#endif 1961#endif
1962
1963 ev_default_loop_ptr = 0;
1526 1964
1527#ifndef _WIN32 1965#ifndef _WIN32
1528 ev_ref (EV_A); /* child watcher */ 1966 ev_ref (EV_A); /* child watcher */
1529 ev_signal_stop (EV_A_ &childev); 1967 ev_signal_stop (EV_A_ &childev);
1530#endif 1968#endif
… …
1534 1972
1535void 1973void
1536ev_default_fork (void) 1974ev_default_fork (void)
1537{ 1975{
1538#if EV_MULTIPLICITY 1976#if EV_MULTIPLICITY
1539 struct ev_loop *loop = ev_default_loop_ptr; 1977 EV_P = ev_default_loop_ptr;
1540#endif 1978#endif
1541 1979
1542 if (backend)
1543 postfork = 1; /* must be in line with ev_loop_fork */ 1980 postfork = 1; /* must be in line with ev_loop_fork */
1544} 1981}
1545 1982
1546/*****************************************************************************/ 1983/*****************************************************************************/
1547 1984
1548void 1985void
1549ev_invoke (EV_P_ void *w, int revents) 1986ev_invoke (EV_P_ void *w, int revents)
1550{ 1987{
1551 EV_CB_INVOKE ((W)w, revents); 1988 EV_CB_INVOKE ((W)w, revents);
1552} 1989}
1553 1990
1554void inline_speed 1991unsigned int
1555call_pending (EV_P) 1992ev_pending_count (EV_P)
1993{
1994 int pri;
1995 unsigned int count = 0;
1996
1997 for (pri = NUMPRI; pri--; )
1998 count += pendingcnt [pri];
1999
2000 return count;
2001}
2002
2003void noinline
2004ev_invoke_pending (EV_P)
1556{ 2005{
1557 int pri; 2006 int pri;
1558 2007
1559 for (pri = NUMPRI; pri--; ) 2008 for (pri = NUMPRI; pri--; )
1560 while (pendingcnt [pri]) 2009 while (pendingcnt [pri])
1561 { 2010 {
1562 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2011 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1563 2012
1564 if (expect_true (p->w))
1565 {
1566 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2013 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2014 /* ^ this is no longer true, as pending_w could be here */
1567 2015
1568 p->w->pending = 0; 2016 p->w->pending = 0;
1569 EV_CB_INVOKE (p->w, p->events); 2017 EV_CB_INVOKE (p->w, p->events);
1570 } 2018 EV_FREQUENT_CHECK;
1571 } 2019 }
1572} 2020}
1573 2021
1574#if EV_IDLE_ENABLE 2022#if EV_IDLE_ENABLE
1575void inline_size 2023/* make idle watchers pending. this handles the "call-idle */
2024/* only when higher priorities are idle" logic */
2025inline_size void
1576idle_reify (EV_P) 2026idle_reify (EV_P)
1577{ 2027{
1578 if (expect_false (idleall)) 2028 if (expect_false (idleall))
1579 { 2029 {
1580 int pri; 2030 int pri;
… …
1592 } 2042 }
1593 } 2043 }
1594} 2044}
1595#endif 2045#endif
1596 2046
1597void inline_size 2047/* make timers pending */
2048inline_size void
1598timers_reify (EV_P) 2049timers_reify (EV_P)
1599{ 2050{
2051 EV_FREQUENT_CHECK;
2052
1600 while (timercnt && ANHE_at (timers [HEAP0]) <= mn_now) 2053 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1601 { 2054 {
1602 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2055 do
1603
1604 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1605
1606 /* first reschedule or stop timer */
1607 if (w->repeat)
1608 { 2056 {
2057 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2058
2059 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2060
2061 /* first reschedule or stop timer */
2062 if (w->repeat)
2063 {
2064 ev_at (w) += w->repeat;
2065 if (ev_at (w) < mn_now)
2066 ev_at (w) = mn_now;
2067
1609 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2068 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1610 2069
1611 ev_at (w) += w->repeat;
1612 if (ev_at (w) < mn_now)
1613 ev_at (w) = mn_now;
1614
1615 ANHE_at_set (timers [HEAP0]); 2070 ANHE_at_cache (timers [HEAP0]);
1616 downheap (timers, timercnt, HEAP0); 2071 downheap (timers, timercnt, HEAP0);
2072 }
2073 else
2074 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2075
2076 EV_FREQUENT_CHECK;
2077 feed_reverse (EV_A_ (W)w);
1617 } 2078 }
1618 else 2079 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1619 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1620 2080
1621 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 2081 feed_reverse_done (EV_A_ EV_TIMEOUT);
1622 } 2082 }
1623} 2083}
1624 2084
1625#if EV_PERIODIC_ENABLE 2085#if EV_PERIODIC_ENABLE
1626void inline_size 2086/* make periodics pending */
2087inline_size void
1627periodics_reify (EV_P) 2088periodics_reify (EV_P)
1628{ 2089{
2090 EV_FREQUENT_CHECK;
2091
1629 while (periodiccnt && ANHE_at (periodics [HEAP0]) <= ev_rt_now) 2092 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1630 { 2093 {
1631 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2094 int feed_count = 0;
1632 2095
1633 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2096 do
1634
1635 /* first reschedule or stop timer */
1636 if (w->reschedule_cb)
1637 { 2097 {
2098 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2099
2100 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2101
2102 /* first reschedule or stop timer */
2103 if (w->reschedule_cb)
2104 {
1638 ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON); 2105 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2106
1639 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now)); 2107 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
2108
1640 ANHE_at_set (periodics [HEAP0]); 2109 ANHE_at_cache (periodics [HEAP0]);
1641 downheap (periodics, periodiccnt, HEAP0); 2110 downheap (periodics, periodiccnt, HEAP0);
2111 }
2112 else if (w->interval)
2113 {
2114 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2115 /* if next trigger time is not sufficiently in the future, put it there */
2116 /* this might happen because of floating point inexactness */
2117 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2118 {
2119 ev_at (w) += w->interval;
2120
2121 /* if interval is unreasonably low we might still have a time in the past */
2122 /* so correct this. this will make the periodic very inexact, but the user */
2123 /* has effectively asked to get triggered more often than possible */
2124 if (ev_at (w) < ev_rt_now)
2125 ev_at (w) = ev_rt_now;
2126 }
2127
2128 ANHE_at_cache (periodics [HEAP0]);
2129 downheap (periodics, periodiccnt, HEAP0);
2130 }
2131 else
2132 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2133
2134 EV_FREQUENT_CHECK;
2135 feed_reverse (EV_A_ (W)w);
1642 } 2136 }
1643 else if (w->interval) 2137 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1644 {
1645 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1646 if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1647 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1648 ANHE_at_set (periodics [HEAP0]);
1649 downheap (periodics, periodiccnt, HEAP0);
1650 }
1651 else
1652 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1653 2138
1654 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2139 feed_reverse_done (EV_A_ EV_PERIODIC);
1655 } 2140 }
1656} 2141}
1657 2142
2143/* simply recalculate all periodics */
2144/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1658static void noinline 2145static void noinline
1659periodics_reschedule (EV_P) 2146periodics_reschedule (EV_P)
1660{ 2147{
1661 int i; 2148 int i;
1662 2149
… …
1668 if (w->reschedule_cb) 2155 if (w->reschedule_cb)
1669 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2156 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1670 else if (w->interval) 2157 else if (w->interval)
1671 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2158 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1672 2159
1673 ANHE_at_set (periodics [i]); 2160 ANHE_at_cache (periodics [i]);
2161 }
2162
2163 reheap (periodics, periodiccnt);
2164}
2165#endif
2166
2167/* adjust all timers by a given offset */
2168static void noinline
2169timers_reschedule (EV_P_ ev_tstamp adjust)
2170{
2171 int i;
2172
2173 for (i = 0; i < timercnt; ++i)
1674 } 2174 {
1675 2175 ANHE *he = timers + i + HEAP0;
1676 /* now rebuild the heap, this for the 2-heap, inefficient for the 4-heap, but correct */ 2176 ANHE_w (*he)->at += adjust;
1677 for (i = periodiccnt >> 1; --i; ) 2177 ANHE_at_cache (*he);
1678 downheap (periodics, periodiccnt, i + HEAP0); 2178 }
1679} 2179}
1680#endif
1681 2180
1682void inline_speed 2181/* fetch new monotonic and realtime times from the kernel */
2182/* also detect if there was a timejump, and act accordingly */
2183inline_speed void
1683time_update (EV_P_ ev_tstamp max_block) 2184time_update (EV_P_ ev_tstamp max_block)
1684{ 2185{
1685 int i;
1686
1687#if EV_USE_MONOTONIC 2186#if EV_USE_MONOTONIC
1688 if (expect_true (have_monotonic)) 2187 if (expect_true (have_monotonic))
1689 { 2188 {
2189 int i;
1690 ev_tstamp odiff = rtmn_diff; 2190 ev_tstamp odiff = rtmn_diff;
1691 2191
1692 mn_now = get_clock (); 2192 mn_now = get_clock ();
1693 2193
1694 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2194 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1720 ev_rt_now = ev_time (); 2220 ev_rt_now = ev_time ();
1721 mn_now = get_clock (); 2221 mn_now = get_clock ();
1722 now_floor = mn_now; 2222 now_floor = mn_now;
1723 } 2223 }
1724 2224
2225 /* no timer adjustment, as the monotonic clock doesn't jump */
2226 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1725# if EV_PERIODIC_ENABLE 2227# if EV_PERIODIC_ENABLE
1726 periodics_reschedule (EV_A); 2228 periodics_reschedule (EV_A);
1727# endif 2229# endif
1728 /* no timer adjustment, as the monotonic clock doesn't jump */
1729 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1730 } 2230 }
1731 else 2231 else
1732#endif 2232#endif
1733 { 2233 {
1734 ev_rt_now = ev_time (); 2234 ev_rt_now = ev_time ();
1735 2235
1736 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2236 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1737 { 2237 {
2238 /* adjust timers. this is easy, as the offset is the same for all of them */
2239 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1738#if EV_PERIODIC_ENABLE 2240#if EV_PERIODIC_ENABLE
1739 periodics_reschedule (EV_A); 2241 periodics_reschedule (EV_A);
1740#endif 2242#endif
1741 /* adjust timers. this is easy, as the offset is the same for all of them */
1742 for (i = 0; i < timercnt; ++i)
1743 {
1744 ANHE *he = timers + i + HEAP0;
1745 ANHE_w (*he)->at += ev_rt_now - mn_now;
1746 ANHE_at_set (*he);
1747 }
1748 } 2243 }
1749 2244
1750 mn_now = ev_rt_now; 2245 mn_now = ev_rt_now;
1751 } 2246 }
1752} 2247}
1753 2248
1754void 2249void
1755ev_ref (EV_P)
1756{
1757 ++activecnt;
1758}
1759
1760void
1761ev_unref (EV_P)
1762{
1763 --activecnt;
1764}
1765
1766static int loop_done;
1767
1768void
1769ev_loop (EV_P_ int flags) 2250ev_loop (EV_P_ int flags)
1770{ 2251{
2252#if EV_MINIMAL < 2
2253 ++loop_depth;
2254#endif
2255
2256 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2257
1771 loop_done = EVUNLOOP_CANCEL; 2258 loop_done = EVUNLOOP_CANCEL;
1772 2259
1773 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2260 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1774 2261
1775 do 2262 do
1776 { 2263 {
2264#if EV_VERIFY >= 2
2265 ev_loop_verify (EV_A);
2266#endif
2267
1777#ifndef _WIN32 2268#ifndef _WIN32
1778 if (expect_false (curpid)) /* penalise the forking check even more */ 2269 if (expect_false (curpid)) /* penalise the forking check even more */
1779 if (expect_false (getpid () != curpid)) 2270 if (expect_false (getpid () != curpid))
1780 { 2271 {
1781 curpid = getpid (); 2272 curpid = getpid ();
… …
1787 /* we might have forked, so queue fork handlers */ 2278 /* we might have forked, so queue fork handlers */
1788 if (expect_false (postfork)) 2279 if (expect_false (postfork))
1789 if (forkcnt) 2280 if (forkcnt)
1790 { 2281 {
1791 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2282 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1792 call_pending (EV_A); 2283 EV_INVOKE_PENDING;
1793 } 2284 }
1794#endif 2285#endif
1795 2286
1796 /* queue prepare watchers (and execute them) */ 2287 /* queue prepare watchers (and execute them) */
1797 if (expect_false (preparecnt)) 2288 if (expect_false (preparecnt))
1798 { 2289 {
1799 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2290 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1800 call_pending (EV_A); 2291 EV_INVOKE_PENDING;
1801 } 2292 }
1802 2293
1803 if (expect_false (!activecnt)) 2294 if (expect_false (loop_done))
1804 break; 2295 break;
1805 2296
1806 /* we might have forked, so reify kernel state if necessary */ 2297 /* we might have forked, so reify kernel state if necessary */
1807 if (expect_false (postfork)) 2298 if (expect_false (postfork))
1808 loop_fork (EV_A); 2299 loop_fork (EV_A);
… …
1815 ev_tstamp waittime = 0.; 2306 ev_tstamp waittime = 0.;
1816 ev_tstamp sleeptime = 0.; 2307 ev_tstamp sleeptime = 0.;
1817 2308
1818 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2309 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1819 { 2310 {
2311 /* remember old timestamp for io_blocktime calculation */
2312 ev_tstamp prev_mn_now = mn_now;
2313
1820 /* update time to cancel out callback processing overhead */ 2314 /* update time to cancel out callback processing overhead */
1821 time_update (EV_A_ 1e100); 2315 time_update (EV_A_ 1e100);
1822 2316
1823 waittime = MAX_BLOCKTIME; 2317 waittime = MAX_BLOCKTIME;
1824 2318
… …
1834 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2328 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1835 if (waittime > to) waittime = to; 2329 if (waittime > to) waittime = to;
1836 } 2330 }
1837#endif 2331#endif
1838 2332
2333 /* don't let timeouts decrease the waittime below timeout_blocktime */
1839 if (expect_false (waittime < timeout_blocktime)) 2334 if (expect_false (waittime < timeout_blocktime))
1840 waittime = timeout_blocktime; 2335 waittime = timeout_blocktime;
1841 2336
1842 sleeptime = waittime - backend_fudge; 2337 /* extra check because io_blocktime is commonly 0 */
1843
1844 if (expect_true (sleeptime > io_blocktime)) 2338 if (expect_false (io_blocktime))
1845 sleeptime = io_blocktime;
1846
1847 if (sleeptime)
1848 { 2339 {
2340 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2341
2342 if (sleeptime > waittime - backend_fudge)
2343 sleeptime = waittime - backend_fudge;
2344
2345 if (expect_true (sleeptime > 0.))
2346 {
1849 ev_sleep (sleeptime); 2347 ev_sleep (sleeptime);
1850 waittime -= sleeptime; 2348 waittime -= sleeptime;
2349 }
1851 } 2350 }
1852 } 2351 }
1853 2352
2353#if EV_MINIMAL < 2
1854 ++loop_count; 2354 ++loop_count;
2355#endif
2356 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1855 backend_poll (EV_A_ waittime); 2357 backend_poll (EV_A_ waittime);
2358 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1856 2359
1857 /* update ev_rt_now, do magic */ 2360 /* update ev_rt_now, do magic */
1858 time_update (EV_A_ waittime + sleeptime); 2361 time_update (EV_A_ waittime + sleeptime);
1859 } 2362 }
1860 2363
… …
1871 2374
1872 /* queue check watchers, to be executed first */ 2375 /* queue check watchers, to be executed first */
1873 if (expect_false (checkcnt)) 2376 if (expect_false (checkcnt))
1874 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2377 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1875 2378
1876 call_pending (EV_A); 2379 EV_INVOKE_PENDING;
1877 } 2380 }
1878 while (expect_true ( 2381 while (expect_true (
1879 activecnt 2382 activecnt
1880 && !loop_done 2383 && !loop_done
1881 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2384 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1882 )); 2385 ));
1883 2386
1884 if (loop_done == EVUNLOOP_ONE) 2387 if (loop_done == EVUNLOOP_ONE)
1885 loop_done = EVUNLOOP_CANCEL; 2388 loop_done = EVUNLOOP_CANCEL;
2389
2390#if EV_MINIMAL < 2
2391 --loop_depth;
2392#endif
1886} 2393}
1887 2394
1888void 2395void
1889ev_unloop (EV_P_ int how) 2396ev_unloop (EV_P_ int how)
1890{ 2397{
1891 loop_done = how; 2398 loop_done = how;
1892} 2399}
1893 2400
2401void
2402ev_ref (EV_P)
2403{
2404 ++activecnt;
2405}
2406
2407void
2408ev_unref (EV_P)
2409{
2410 --activecnt;
2411}
2412
2413void
2414ev_now_update (EV_P)
2415{
2416 time_update (EV_A_ 1e100);
2417}
2418
2419void
2420ev_suspend (EV_P)
2421{
2422 ev_now_update (EV_A);
2423}
2424
2425void
2426ev_resume (EV_P)
2427{
2428 ev_tstamp mn_prev = mn_now;
2429
2430 ev_now_update (EV_A);
2431 timers_reschedule (EV_A_ mn_now - mn_prev);
2432#if EV_PERIODIC_ENABLE
2433 /* TODO: really do this? */
2434 periodics_reschedule (EV_A);
2435#endif
2436}
2437
1894/*****************************************************************************/ 2438/*****************************************************************************/
2439/* singly-linked list management, used when the expected list length is short */
1895 2440
1896void inline_size 2441inline_size void
1897wlist_add (WL *head, WL elem) 2442wlist_add (WL *head, WL elem)
1898{ 2443{
1899 elem->next = *head; 2444 elem->next = *head;
1900 *head = elem; 2445 *head = elem;
1901} 2446}
1902 2447
1903void inline_size 2448inline_size void
1904wlist_del (WL *head, WL elem) 2449wlist_del (WL *head, WL elem)
1905{ 2450{
1906 while (*head) 2451 while (*head)
1907 { 2452 {
1908 if (*head == elem) 2453 if (expect_true (*head == elem))
1909 { 2454 {
1910 *head = elem->next; 2455 *head = elem->next;
1911 return; 2456 break;
1912 } 2457 }
1913 2458
1914 head = &(*head)->next; 2459 head = &(*head)->next;
1915 } 2460 }
1916} 2461}
1917 2462
1918void inline_speed 2463/* internal, faster, version of ev_clear_pending */
2464inline_speed void
1919clear_pending (EV_P_ W w) 2465clear_pending (EV_P_ W w)
1920{ 2466{
1921 if (w->pending) 2467 if (w->pending)
1922 { 2468 {
1923 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2469 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1924 w->pending = 0; 2470 w->pending = 0;
1925 } 2471 }
1926} 2472}
1927 2473
1928int 2474int
… …
1932 int pending = w_->pending; 2478 int pending = w_->pending;
1933 2479
1934 if (expect_true (pending)) 2480 if (expect_true (pending))
1935 { 2481 {
1936 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2482 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2483 p->w = (W)&pending_w;
1937 w_->pending = 0; 2484 w_->pending = 0;
1938 p->w = 0;
1939 return p->events; 2485 return p->events;
1940 } 2486 }
1941 else 2487 else
1942 return 0; 2488 return 0;
1943} 2489}
1944 2490
1945void inline_size 2491inline_size void
1946pri_adjust (EV_P_ W w) 2492pri_adjust (EV_P_ W w)
1947{ 2493{
1948 int pri = w->priority; 2494 int pri = ev_priority (w);
1949 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2495 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1950 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2496 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1951 w->priority = pri; 2497 ev_set_priority (w, pri);
1952} 2498}
1953 2499
1954void inline_speed 2500inline_speed void
1955ev_start (EV_P_ W w, int active) 2501ev_start (EV_P_ W w, int active)
1956{ 2502{
1957 pri_adjust (EV_A_ w); 2503 pri_adjust (EV_A_ w);
1958 w->active = active; 2504 w->active = active;
1959 ev_ref (EV_A); 2505 ev_ref (EV_A);
1960} 2506}
1961 2507
1962void inline_size 2508inline_size void
1963ev_stop (EV_P_ W w) 2509ev_stop (EV_P_ W w)
1964{ 2510{
1965 ev_unref (EV_A); 2511 ev_unref (EV_A);
1966 w->active = 0; 2512 w->active = 0;
1967} 2513}
… …
1974 int fd = w->fd; 2520 int fd = w->fd;
1975 2521
1976 if (expect_false (ev_is_active (w))) 2522 if (expect_false (ev_is_active (w)))
1977 return; 2523 return;
1978 2524
1979 assert (("ev_io_start called with negative fd", fd >= 0)); 2525 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2526 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2527
2528 EV_FREQUENT_CHECK;
1980 2529
1981 ev_start (EV_A_ (W)w, 1); 2530 ev_start (EV_A_ (W)w, 1);
1982 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2531 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1983 wlist_add (&anfds[fd].head, (WL)w); 2532 wlist_add (&anfds[fd].head, (WL)w);
1984 2533
1985 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2534 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1986 w->events &= ~EV_IOFDSET; 2535 w->events &= ~EV__IOFDSET;
2536
2537 EV_FREQUENT_CHECK;
1987} 2538}
1988 2539
1989void noinline 2540void noinline
1990ev_io_stop (EV_P_ ev_io *w) 2541ev_io_stop (EV_P_ ev_io *w)
1991{ 2542{
1992 clear_pending (EV_A_ (W)w); 2543 clear_pending (EV_A_ (W)w);
1993 if (expect_false (!ev_is_active (w))) 2544 if (expect_false (!ev_is_active (w)))
1994 return; 2545 return;
1995 2546
1996 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2547 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2548
2549 EV_FREQUENT_CHECK;
1997 2550
1998 wlist_del (&anfds[w->fd].head, (WL)w); 2551 wlist_del (&anfds[w->fd].head, (WL)w);
1999 ev_stop (EV_A_ (W)w); 2552 ev_stop (EV_A_ (W)w);
2000 2553
2001 fd_change (EV_A_ w->fd, 1); 2554 fd_change (EV_A_ w->fd, 1);
2555
2556 EV_FREQUENT_CHECK;
2002} 2557}
2003 2558
2004void noinline 2559void noinline
2005ev_timer_start (EV_P_ ev_timer *w) 2560ev_timer_start (EV_P_ ev_timer *w)
2006{ 2561{
2007 if (expect_false (ev_is_active (w))) 2562 if (expect_false (ev_is_active (w)))
2008 return; 2563 return;
2009 2564
2010 ev_at (w) += mn_now; 2565 ev_at (w) += mn_now;
2011 2566
2012 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2567 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2013 2568
2569 EV_FREQUENT_CHECK;
2570
2571 ++timercnt;
2014 ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1); 2572 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2015 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 2573 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
2016 ANHE_w (timers [ev_active (w)]) = (WT)w; 2574 ANHE_w (timers [ev_active (w)]) = (WT)w;
2017 ANHE_at_set (timers [ev_active (w)]); 2575 ANHE_at_cache (timers [ev_active (w)]);
2018 upheap (timers, ev_active (w)); 2576 upheap (timers, ev_active (w));
2019 2577
2578 EV_FREQUENT_CHECK;
2579
2020 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2580 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2021} 2581}
2022 2582
2023void noinline 2583void noinline
2024ev_timer_stop (EV_P_ ev_timer *w) 2584ev_timer_stop (EV_P_ ev_timer *w)
2025{ 2585{
2026 clear_pending (EV_A_ (W)w); 2586 clear_pending (EV_A_ (W)w);
2027 if (expect_false (!ev_is_active (w))) 2587 if (expect_false (!ev_is_active (w)))
2028 return; 2588 return;
2029 2589
2590 EV_FREQUENT_CHECK;
2591
2030 { 2592 {
2031 int active = ev_active (w); 2593 int active = ev_active (w);
2032 2594
2033 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2595 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2034 2596
2597 --timercnt;
2598
2035 if (expect_true (active < timercnt + HEAP0 - 1)) 2599 if (expect_true (active < timercnt + HEAP0))
2036 { 2600 {
2037 timers [active] = timers [timercnt + HEAP0 - 1]; 2601 timers [active] = timers [timercnt + HEAP0];
2038 adjustheap (timers, timercnt, active); 2602 adjustheap (timers, timercnt, active);
2039 } 2603 }
2040
2041 --timercnt;
2042 } 2604 }
2043 2605
2044 ev_at (w) -= mn_now; 2606 ev_at (w) -= mn_now;
2045 2607
2046 ev_stop (EV_A_ (W)w); 2608 ev_stop (EV_A_ (W)w);
2609
2610 EV_FREQUENT_CHECK;
2047} 2611}
2048 2612
2049void noinline 2613void noinline
2050ev_timer_again (EV_P_ ev_timer *w) 2614ev_timer_again (EV_P_ ev_timer *w)
2051{ 2615{
2616 EV_FREQUENT_CHECK;
2617
2052 if (ev_is_active (w)) 2618 if (ev_is_active (w))
2053 { 2619 {
2054 if (w->repeat) 2620 if (w->repeat)
2055 { 2621 {
2056 ev_at (w) = mn_now + w->repeat; 2622 ev_at (w) = mn_now + w->repeat;
2057 ANHE_at_set (timers [ev_active (w)]); 2623 ANHE_at_cache (timers [ev_active (w)]);
2058 adjustheap (timers, timercnt, ev_active (w)); 2624 adjustheap (timers, timercnt, ev_active (w));
2059 } 2625 }
2060 else 2626 else
2061 ev_timer_stop (EV_A_ w); 2627 ev_timer_stop (EV_A_ w);
2062 } 2628 }
2063 else if (w->repeat) 2629 else if (w->repeat)
2064 { 2630 {
2065 ev_at (w) = w->repeat; 2631 ev_at (w) = w->repeat;
2066 ev_timer_start (EV_A_ w); 2632 ev_timer_start (EV_A_ w);
2067 } 2633 }
2634
2635 EV_FREQUENT_CHECK;
2636}
2637
2638ev_tstamp
2639ev_timer_remaining (EV_P_ ev_timer *w)
2640{
2641 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2068} 2642}
2069 2643
2070#if EV_PERIODIC_ENABLE 2644#if EV_PERIODIC_ENABLE
2071void noinline 2645void noinline
2072ev_periodic_start (EV_P_ ev_periodic *w) 2646ev_periodic_start (EV_P_ ev_periodic *w)
… …
2076 2650
2077 if (w->reschedule_cb) 2651 if (w->reschedule_cb)
2078 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2652 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2079 else if (w->interval) 2653 else if (w->interval)
2080 { 2654 {
2081 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2655 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2082 /* this formula differs from the one in periodic_reify because we do not always round up */ 2656 /* this formula differs from the one in periodic_reify because we do not always round up */
2083 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2657 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2084 } 2658 }
2085 else 2659 else
2086 ev_at (w) = w->offset; 2660 ev_at (w) = w->offset;
2087 2661
2662 EV_FREQUENT_CHECK;
2663
2664 ++periodiccnt;
2088 ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1); 2665 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2089 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 2666 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2090 ANHE_w (periodics [ev_active (w)]) = (WT)w; 2667 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2668 ANHE_at_cache (periodics [ev_active (w)]);
2091 upheap (periodics, ev_active (w)); 2669 upheap (periodics, ev_active (w));
2092 2670
2671 EV_FREQUENT_CHECK;
2672
2093 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2673 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2094} 2674}
2095 2675
2096void noinline 2676void noinline
2097ev_periodic_stop (EV_P_ ev_periodic *w) 2677ev_periodic_stop (EV_P_ ev_periodic *w)
2098{ 2678{
2099 clear_pending (EV_A_ (W)w); 2679 clear_pending (EV_A_ (W)w);
2100 if (expect_false (!ev_is_active (w))) 2680 if (expect_false (!ev_is_active (w)))
2101 return; 2681 return;
2102 2682
2683 EV_FREQUENT_CHECK;
2684
2103 { 2685 {
2104 int active = ev_active (w); 2686 int active = ev_active (w);
2105 2687
2106 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2688 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2107 2689
2690 --periodiccnt;
2691
2108 if (expect_true (active < periodiccnt + HEAP0 - 1)) 2692 if (expect_true (active < periodiccnt + HEAP0))
2109 { 2693 {
2110 periodics [active] = periodics [periodiccnt + HEAP0 - 1]; 2694 periodics [active] = periodics [periodiccnt + HEAP0];
2111 adjustheap (periodics, periodiccnt, active); 2695 adjustheap (periodics, periodiccnt, active);
2112 } 2696 }
2113
2114 --periodiccnt;
2115 } 2697 }
2116 2698
2117 ev_stop (EV_A_ (W)w); 2699 ev_stop (EV_A_ (W)w);
2700
2701 EV_FREQUENT_CHECK;
2118} 2702}
2119 2703
2120void noinline 2704void noinline
2121ev_periodic_again (EV_P_ ev_periodic *w) 2705ev_periodic_again (EV_P_ ev_periodic *w)
2122{ 2706{
… …
2131#endif 2715#endif
2132 2716
2133void noinline 2717void noinline
2134ev_signal_start (EV_P_ ev_signal *w) 2718ev_signal_start (EV_P_ ev_signal *w)
2135{ 2719{
2136#if EV_MULTIPLICITY
2137 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2138#endif
2139 if (expect_false (ev_is_active (w))) 2720 if (expect_false (ev_is_active (w)))
2140 return; 2721 return;
2141 2722
2142 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2723 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2143 2724
2144 evpipe_init (EV_A); 2725#if EV_MULTIPLICITY
2726 assert (("libev: a signal must not be attached to two different loops",
2727 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2145 2728
2729 signals [w->signum - 1].loop = EV_A;
2730#endif
2731
2732 EV_FREQUENT_CHECK;
2733
2734#if EV_USE_SIGNALFD
2735 if (sigfd == -2)
2146 { 2736 {
2147#ifndef _WIN32 2737 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2148 sigset_t full, prev; 2738 if (sigfd < 0 && errno == EINVAL)
2149 sigfillset (&full); 2739 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2150 sigprocmask (SIG_SETMASK, &full, &prev);
2151#endif
2152 2740
2153 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2741 if (sigfd >= 0)
2742 {
2743 fd_intern (sigfd); /* doing it twice will not hurt */
2154 2744
2155#ifndef _WIN32 2745 sigemptyset (&sigfd_set);
2156 sigprocmask (SIG_SETMASK, &prev, 0); 2746
2157#endif 2747 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2748 ev_set_priority (&sigfd_w, EV_MAXPRI);
2749 ev_io_start (EV_A_ &sigfd_w);
2750 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2751 }
2158 } 2752 }
2753
2754 if (sigfd >= 0)
2755 {
2756 /* TODO: check .head */
2757 sigaddset (&sigfd_set, w->signum);
2758 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2759
2760 signalfd (sigfd, &sigfd_set, 0);
2761 }
2762#endif
2159 2763
2160 ev_start (EV_A_ (W)w, 1); 2764 ev_start (EV_A_ (W)w, 1);
2161 wlist_add (&signals [w->signum - 1].head, (WL)w); 2765 wlist_add (&signals [w->signum - 1].head, (WL)w);
2162 2766
2163 if (!((WL)w)->next) 2767 if (!((WL)w)->next)
2768# if EV_USE_SIGNALFD
2769 if (sigfd < 0) /*TODO*/
2770# endif
2164 { 2771 {
2165#if _WIN32 2772# ifdef _WIN32
2773 evpipe_init (EV_A);
2774
2166 signal (w->signum, ev_sighandler); 2775 signal (w->signum, ev_sighandler);
2167#else 2776# else
2168 struct sigaction sa; 2777 struct sigaction sa;
2778
2779 evpipe_init (EV_A);
2780
2169 sa.sa_handler = ev_sighandler; 2781 sa.sa_handler = ev_sighandler;
2170 sigfillset (&sa.sa_mask); 2782 sigfillset (&sa.sa_mask);
2171 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2783 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2172 sigaction (w->signum, &sa, 0); 2784 sigaction (w->signum, &sa, 0);
2785
2786 sigemptyset (&sa.sa_mask);
2787 sigaddset (&sa.sa_mask, w->signum);
2788 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2173#endif 2789#endif
2174 } 2790 }
2791
2792 EV_FREQUENT_CHECK;
2175} 2793}
2176 2794
2177void noinline 2795void noinline
2178ev_signal_stop (EV_P_ ev_signal *w) 2796ev_signal_stop (EV_P_ ev_signal *w)
2179{ 2797{
2180 clear_pending (EV_A_ (W)w); 2798 clear_pending (EV_A_ (W)w);
2181 if (expect_false (!ev_is_active (w))) 2799 if (expect_false (!ev_is_active (w)))
2182 return; 2800 return;
2183 2801
2802 EV_FREQUENT_CHECK;
2803
2184 wlist_del (&signals [w->signum - 1].head, (WL)w); 2804 wlist_del (&signals [w->signum - 1].head, (WL)w);
2185 ev_stop (EV_A_ (W)w); 2805 ev_stop (EV_A_ (W)w);
2186 2806
2187 if (!signals [w->signum - 1].head) 2807 if (!signals [w->signum - 1].head)
2808 {
2809#if EV_MULTIPLICITY
2810 signals [w->signum - 1].loop = 0; /* unattach from signal */
2811#endif
2812#if EV_USE_SIGNALFD
2813 if (sigfd >= 0)
2814 {
2815 sigset_t ss;
2816
2817 sigemptyset (&ss);
2818 sigaddset (&ss, w->signum);
2819 sigdelset (&sigfd_set, w->signum);
2820
2821 signalfd (sigfd, &sigfd_set, 0);
2822 sigprocmask (SIG_UNBLOCK, &ss, 0);
2823 }
2824 else
2825#endif
2188 signal (w->signum, SIG_DFL); 2826 signal (w->signum, SIG_DFL);
2827 }
2828
2829 EV_FREQUENT_CHECK;
2189} 2830}
2190 2831
2191void 2832void
2192ev_child_start (EV_P_ ev_child *w) 2833ev_child_start (EV_P_ ev_child *w)
2193{ 2834{
2194#if EV_MULTIPLICITY 2835#if EV_MULTIPLICITY
2195 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2836 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2196#endif 2837#endif
2197 if (expect_false (ev_is_active (w))) 2838 if (expect_false (ev_is_active (w)))
2198 return; 2839 return;
2199 2840
2841 EV_FREQUENT_CHECK;
2842
2200 ev_start (EV_A_ (W)w, 1); 2843 ev_start (EV_A_ (W)w, 1);
2201 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2844 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2845
2846 EV_FREQUENT_CHECK;
2202} 2847}
2203 2848
2204void 2849void
2205ev_child_stop (EV_P_ ev_child *w) 2850ev_child_stop (EV_P_ ev_child *w)
2206{ 2851{
2207 clear_pending (EV_A_ (W)w); 2852 clear_pending (EV_A_ (W)w);
2208 if (expect_false (!ev_is_active (w))) 2853 if (expect_false (!ev_is_active (w)))
2209 return; 2854 return;
2210 2855
2856 EV_FREQUENT_CHECK;
2857
2211 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2858 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2212 ev_stop (EV_A_ (W)w); 2859 ev_stop (EV_A_ (W)w);
2860
2861 EV_FREQUENT_CHECK;
2213} 2862}
2214 2863
2215#if EV_STAT_ENABLE 2864#if EV_STAT_ENABLE
2216 2865
2217# ifdef _WIN32 2866# ifdef _WIN32
2218# undef lstat 2867# undef lstat
2219# define lstat(a,b) _stati64 (a,b) 2868# define lstat(a,b) _stati64 (a,b)
2220# endif 2869# endif
2221 2870
2222#define DEF_STAT_INTERVAL 5.0074891 2871#define DEF_STAT_INTERVAL 5.0074891
2872#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2223#define MIN_STAT_INTERVAL 0.1074891 2873#define MIN_STAT_INTERVAL 0.1074891
2224 2874
2225static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2875static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2226 2876
2227#if EV_USE_INOTIFY 2877#if EV_USE_INOTIFY
2228# define EV_INOTIFY_BUFSIZE 8192 2878
2879/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2880# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2229 2881
2230static void noinline 2882static void noinline
2231infy_add (EV_P_ ev_stat *w) 2883infy_add (EV_P_ ev_stat *w)
2232{ 2884{
2233 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); 2885 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);
2234 2886
2235 if (w->wd < 0) 2887 if (w->wd >= 0)
2888 {
2889 struct statfs sfs;
2890
2891 /* now local changes will be tracked by inotify, but remote changes won't */
2892 /* unless the filesystem is known to be local, we therefore still poll */
2893 /* also do poll on <2.6.25, but with normal frequency */
2894
2895 if (!fs_2625)
2896 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2897 else if (!statfs (w->path, &sfs)
2898 && (sfs.f_type == 0x1373 /* devfs */
2899 || sfs.f_type == 0xEF53 /* ext2/3 */
2900 || sfs.f_type == 0x3153464a /* jfs */
2901 || sfs.f_type == 0x52654973 /* reiser3 */
2902 || sfs.f_type == 0x01021994 /* tempfs */
2903 || sfs.f_type == 0x58465342 /* xfs */))
2904 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2905 else
2906 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2236 { 2907 }
2237 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2908 else
2909 {
2910 /* can't use inotify, continue to stat */
2911 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2238 2912
2239 /* monitor some parent directory for speedup hints */ 2913 /* if path is not there, monitor some parent directory for speedup hints */
2240 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2914 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2241 /* but an efficiency issue only */ 2915 /* but an efficiency issue only */
2242 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2916 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2243 { 2917 {
2244 char path [4096]; 2918 char path [4096];
2245 strcpy (path, w->path); 2919 strcpy (path, w->path);
… …
2249 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2923 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2250 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2924 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2251 2925
2252 char *pend = strrchr (path, '/'); 2926 char *pend = strrchr (path, '/');
2253 2927
2254 if (!pend) 2928 if (!pend || pend == path)
2255 break; /* whoops, no '/', complain to your admin */ 2929 break;
2256 2930
2257 *pend = 0; 2931 *pend = 0;
2258 w->wd = inotify_add_watch (fs_fd, path, mask); 2932 w->wd = inotify_add_watch (fs_fd, path, mask);
2259 } 2933 }
2260 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2934 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2261 } 2935 }
2262 } 2936 }
2263 else
2264 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2265 2937
2266 if (w->wd >= 0) 2938 if (w->wd >= 0)
2267 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2939 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2940
2941 /* now re-arm timer, if required */
2942 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2943 ev_timer_again (EV_A_ &w->timer);
2944 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2268} 2945}
2269 2946
2270static void noinline 2947static void noinline
2271infy_del (EV_P_ ev_stat *w) 2948infy_del (EV_P_ ev_stat *w)
2272{ 2949{
… …
2286 2963
2287static void noinline 2964static void noinline
2288infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2965infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2289{ 2966{
2290 if (slot < 0) 2967 if (slot < 0)
2291 /* overflow, need to check for all hahs slots */ 2968 /* overflow, need to check for all hash slots */
2292 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2969 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2293 infy_wd (EV_A_ slot, wd, ev); 2970 infy_wd (EV_A_ slot, wd, ev);
2294 else 2971 else
2295 { 2972 {
2296 WL w_; 2973 WL w_;
… …
2302 2979
2303 if (w->wd == wd || wd == -1) 2980 if (w->wd == wd || wd == -1)
2304 { 2981 {
2305 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2982 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2306 { 2983 {
2984 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2307 w->wd = -1; 2985 w->wd = -1;
2308 infy_add (EV_A_ w); /* re-add, no matter what */ 2986 infy_add (EV_A_ w); /* re-add, no matter what */
2309 } 2987 }
2310 2988
2311 stat_timer_cb (EV_A_ &w->timer, 0); 2989 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2316 2994
2317static void 2995static void
2318infy_cb (EV_P_ ev_io *w, int revents) 2996infy_cb (EV_P_ ev_io *w, int revents)
2319{ 2997{
2320 char buf [EV_INOTIFY_BUFSIZE]; 2998 char buf [EV_INOTIFY_BUFSIZE];
2321 struct inotify_event *ev = (struct inotify_event *)buf;
2322 int ofs; 2999 int ofs;
2323 int len = read (fs_fd, buf, sizeof (buf)); 3000 int len = read (fs_fd, buf, sizeof (buf));
2324 3001
2325 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3002 for (ofs = 0; ofs < len; )
3003 {
3004 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2326 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3005 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3006 ofs += sizeof (struct inotify_event) + ev->len;
3007 }
2327} 3008}
2328 3009
2329void inline_size 3010inline_size unsigned int
3011ev_linux_version (void)
3012{
3013 struct utsname buf;
3014 unsigned int v;
3015 int i;
3016 char *p = buf.release;
3017
3018 if (uname (&buf))
3019 return 0;
3020
3021 for (i = 3+1; --i; )
3022 {
3023 unsigned int c = 0;
3024
3025 for (;;)
3026 {
3027 if (*p >= '0' && *p <= '9')
3028 c = c * 10 + *p++ - '0';
3029 else
3030 {
3031 p += *p == '.';
3032 break;
3033 }
3034 }
3035
3036 v = (v << 8) | c;
3037 }
3038
3039 return v;
3040}
3041
3042inline_size void
3043ev_check_2625 (EV_P)
3044{
3045 /* kernels < 2.6.25 are borked
3046 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3047 */
3048 if (ev_linux_version () < 0x020619)
3049 return;
3050
3051 fs_2625 = 1;
3052}
3053
3054inline_size int
3055infy_newfd (void)
3056{
3057#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3058 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3059 if (fd >= 0)
3060 return fd;
3061#endif
3062 return inotify_init ();
3063}
3064
3065inline_size void
2330infy_init (EV_P) 3066infy_init (EV_P)
2331{ 3067{
2332 if (fs_fd != -2) 3068 if (fs_fd != -2)
2333 return; 3069 return;
2334 3070
3071 fs_fd = -1;
3072
3073 ev_check_2625 (EV_A);
3074
2335 fs_fd = inotify_init (); 3075 fs_fd = infy_newfd ();
2336 3076
2337 if (fs_fd >= 0) 3077 if (fs_fd >= 0)
2338 { 3078 {
3079 fd_intern (fs_fd);
2339 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3080 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2340 ev_set_priority (&fs_w, EV_MAXPRI); 3081 ev_set_priority (&fs_w, EV_MAXPRI);
2341 ev_io_start (EV_A_ &fs_w); 3082 ev_io_start (EV_A_ &fs_w);
3083 ev_unref (EV_A);
2342 } 3084 }
2343} 3085}
2344 3086
2345void inline_size 3087inline_size void
2346infy_fork (EV_P) 3088infy_fork (EV_P)
2347{ 3089{
2348 int slot; 3090 int slot;
2349 3091
2350 if (fs_fd < 0) 3092 if (fs_fd < 0)
2351 return; 3093 return;
2352 3094
3095 ev_ref (EV_A);
3096 ev_io_stop (EV_A_ &fs_w);
2353 close (fs_fd); 3097 close (fs_fd);
2354 fs_fd = inotify_init (); 3098 fs_fd = infy_newfd ();
3099
3100 if (fs_fd >= 0)
3101 {
3102 fd_intern (fs_fd);
3103 ev_io_set (&fs_w, fs_fd, EV_READ);
3104 ev_io_start (EV_A_ &fs_w);
3105 ev_unref (EV_A);
3106 }
2355 3107
2356 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3108 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2357 { 3109 {
2358 WL w_ = fs_hash [slot].head; 3110 WL w_ = fs_hash [slot].head;
2359 fs_hash [slot].head = 0; 3111 fs_hash [slot].head = 0;
… …
2366 w->wd = -1; 3118 w->wd = -1;
2367 3119
2368 if (fs_fd >= 0) 3120 if (fs_fd >= 0)
2369 infy_add (EV_A_ w); /* re-add, no matter what */ 3121 infy_add (EV_A_ w); /* re-add, no matter what */
2370 else 3122 else
3123 {
3124 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3125 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2371 ev_timer_start (EV_A_ &w->timer); 3126 ev_timer_again (EV_A_ &w->timer);
3127 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3128 }
2372 } 3129 }
2373
2374 } 3130 }
2375} 3131}
2376 3132
3133#endif
3134
3135#ifdef _WIN32
3136# define EV_LSTAT(p,b) _stati64 (p, b)
3137#else
3138# define EV_LSTAT(p,b) lstat (p, b)
2377#endif 3139#endif
2378 3140
2379void 3141void
2380ev_stat_stat (EV_P_ ev_stat *w) 3142ev_stat_stat (EV_P_ ev_stat *w)
2381{ 3143{
… …
2388static void noinline 3150static void noinline
2389stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3151stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2390{ 3152{
2391 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3153 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2392 3154
2393 /* we copy this here each the time so that */ 3155 ev_statdata prev = w->attr;
2394 /* prev has the old value when the callback gets invoked */
2395 w->prev = w->attr;
2396 ev_stat_stat (EV_A_ w); 3156 ev_stat_stat (EV_A_ w);
2397 3157
2398 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3158 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2399 if ( 3159 if (
2400 w->prev.st_dev != w->attr.st_dev 3160 prev.st_dev != w->attr.st_dev
2401 || w->prev.st_ino != w->attr.st_ino 3161 || prev.st_ino != w->attr.st_ino
2402 || w->prev.st_mode != w->attr.st_mode 3162 || prev.st_mode != w->attr.st_mode
2403 || w->prev.st_nlink != w->attr.st_nlink 3163 || prev.st_nlink != w->attr.st_nlink
2404 || w->prev.st_uid != w->attr.st_uid 3164 || prev.st_uid != w->attr.st_uid
2405 || w->prev.st_gid != w->attr.st_gid 3165 || prev.st_gid != w->attr.st_gid
2406 || w->prev.st_rdev != w->attr.st_rdev 3166 || prev.st_rdev != w->attr.st_rdev
2407 || w->prev.st_size != w->attr.st_size 3167 || prev.st_size != w->attr.st_size
2408 || w->prev.st_atime != w->attr.st_atime 3168 || prev.st_atime != w->attr.st_atime
2409 || w->prev.st_mtime != w->attr.st_mtime 3169 || prev.st_mtime != w->attr.st_mtime
2410 || w->prev.st_ctime != w->attr.st_ctime 3170 || prev.st_ctime != w->attr.st_ctime
2411 ) { 3171 ) {
3172 /* we only update w->prev on actual differences */
3173 /* in case we test more often than invoke the callback, */
3174 /* to ensure that prev is always different to attr */
3175 w->prev = prev;
3176
2412 #if EV_USE_INOTIFY 3177 #if EV_USE_INOTIFY
3178 if (fs_fd >= 0)
3179 {
2413 infy_del (EV_A_ w); 3180 infy_del (EV_A_ w);
2414 infy_add (EV_A_ w); 3181 infy_add (EV_A_ w);
2415 ev_stat_stat (EV_A_ w); /* avoid race... */ 3182 ev_stat_stat (EV_A_ w); /* avoid race... */
3183 }
2416 #endif 3184 #endif
2417 3185
2418 ev_feed_event (EV_A_ w, EV_STAT); 3186 ev_feed_event (EV_A_ w, EV_STAT);
2419 } 3187 }
2420} 3188}
… …
2423ev_stat_start (EV_P_ ev_stat *w) 3191ev_stat_start (EV_P_ ev_stat *w)
2424{ 3192{
2425 if (expect_false (ev_is_active (w))) 3193 if (expect_false (ev_is_active (w)))
2426 return; 3194 return;
2427 3195
2428 /* since we use memcmp, we need to clear any padding data etc. */
2429 memset (&w->prev, 0, sizeof (ev_statdata));
2430 memset (&w->attr, 0, sizeof (ev_statdata));
2431
2432 ev_stat_stat (EV_A_ w); 3196 ev_stat_stat (EV_A_ w);
2433 3197
3198 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2434 if (w->interval < MIN_STAT_INTERVAL) 3199 w->interval = MIN_STAT_INTERVAL;
2435 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2436 3200
2437 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3201 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2438 ev_set_priority (&w->timer, ev_priority (w)); 3202 ev_set_priority (&w->timer, ev_priority (w));
2439 3203
2440#if EV_USE_INOTIFY 3204#if EV_USE_INOTIFY
2441 infy_init (EV_A); 3205 infy_init (EV_A);
2442 3206
2443 if (fs_fd >= 0) 3207 if (fs_fd >= 0)
2444 infy_add (EV_A_ w); 3208 infy_add (EV_A_ w);
2445 else 3209 else
2446#endif 3210#endif
3211 {
2447 ev_timer_start (EV_A_ &w->timer); 3212 ev_timer_again (EV_A_ &w->timer);
3213 ev_unref (EV_A);
3214 }
2448 3215
2449 ev_start (EV_A_ (W)w, 1); 3216 ev_start (EV_A_ (W)w, 1);
3217
3218 EV_FREQUENT_CHECK;
2450} 3219}
2451 3220
2452void 3221void
2453ev_stat_stop (EV_P_ ev_stat *w) 3222ev_stat_stop (EV_P_ ev_stat *w)
2454{ 3223{
2455 clear_pending (EV_A_ (W)w); 3224 clear_pending (EV_A_ (W)w);
2456 if (expect_false (!ev_is_active (w))) 3225 if (expect_false (!ev_is_active (w)))
2457 return; 3226 return;
2458 3227
3228 EV_FREQUENT_CHECK;
3229
2459#if EV_USE_INOTIFY 3230#if EV_USE_INOTIFY
2460 infy_del (EV_A_ w); 3231 infy_del (EV_A_ w);
2461#endif 3232#endif
3233
3234 if (ev_is_active (&w->timer))
3235 {
3236 ev_ref (EV_A);
2462 ev_timer_stop (EV_A_ &w->timer); 3237 ev_timer_stop (EV_A_ &w->timer);
3238 }
2463 3239
2464 ev_stop (EV_A_ (W)w); 3240 ev_stop (EV_A_ (W)w);
3241
3242 EV_FREQUENT_CHECK;
2465} 3243}
2466#endif 3244#endif
2467 3245
2468#if EV_IDLE_ENABLE 3246#if EV_IDLE_ENABLE
2469void 3247void
… …
2471{ 3249{
2472 if (expect_false (ev_is_active (w))) 3250 if (expect_false (ev_is_active (w)))
2473 return; 3251 return;
2474 3252
2475 pri_adjust (EV_A_ (W)w); 3253 pri_adjust (EV_A_ (W)w);
3254
3255 EV_FREQUENT_CHECK;
2476 3256
2477 { 3257 {
2478 int active = ++idlecnt [ABSPRI (w)]; 3258 int active = ++idlecnt [ABSPRI (w)];
2479 3259
2480 ++idleall; 3260 ++idleall;
2481 ev_start (EV_A_ (W)w, active); 3261 ev_start (EV_A_ (W)w, active);
2482 3262
2483 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 3263 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2484 idles [ABSPRI (w)][active - 1] = w; 3264 idles [ABSPRI (w)][active - 1] = w;
2485 } 3265 }
3266
3267 EV_FREQUENT_CHECK;
2486} 3268}
2487 3269
2488void 3270void
2489ev_idle_stop (EV_P_ ev_idle *w) 3271ev_idle_stop (EV_P_ ev_idle *w)
2490{ 3272{
2491 clear_pending (EV_A_ (W)w); 3273 clear_pending (EV_A_ (W)w);
2492 if (expect_false (!ev_is_active (w))) 3274 if (expect_false (!ev_is_active (w)))
2493 return; 3275 return;
2494 3276
3277 EV_FREQUENT_CHECK;
3278
2495 { 3279 {
2496 int active = ev_active (w); 3280 int active = ev_active (w);
2497 3281
2498 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3282 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2499 ev_active (idles [ABSPRI (w)][active - 1]) = active; 3283 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2500 3284
2501 ev_stop (EV_A_ (W)w); 3285 ev_stop (EV_A_ (W)w);
2502 --idleall; 3286 --idleall;
2503 } 3287 }
3288
3289 EV_FREQUENT_CHECK;
2504} 3290}
2505#endif 3291#endif
2506 3292
2507void 3293void
2508ev_prepare_start (EV_P_ ev_prepare *w) 3294ev_prepare_start (EV_P_ ev_prepare *w)
2509{ 3295{
2510 if (expect_false (ev_is_active (w))) 3296 if (expect_false (ev_is_active (w)))
2511 return; 3297 return;
3298
3299 EV_FREQUENT_CHECK;
2512 3300
2513 ev_start (EV_A_ (W)w, ++preparecnt); 3301 ev_start (EV_A_ (W)w, ++preparecnt);
2514 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3302 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2515 prepares [preparecnt - 1] = w; 3303 prepares [preparecnt - 1] = w;
3304
3305 EV_FREQUENT_CHECK;
2516} 3306}
2517 3307
2518void 3308void
2519ev_prepare_stop (EV_P_ ev_prepare *w) 3309ev_prepare_stop (EV_P_ ev_prepare *w)
2520{ 3310{
2521 clear_pending (EV_A_ (W)w); 3311 clear_pending (EV_A_ (W)w);
2522 if (expect_false (!ev_is_active (w))) 3312 if (expect_false (!ev_is_active (w)))
2523 return; 3313 return;
2524 3314
3315 EV_FREQUENT_CHECK;
3316
2525 { 3317 {
2526 int active = ev_active (w); 3318 int active = ev_active (w);
2527 3319
2528 prepares [active - 1] = prepares [--preparecnt]; 3320 prepares [active - 1] = prepares [--preparecnt];
2529 ev_active (prepares [active - 1]) = active; 3321 ev_active (prepares [active - 1]) = active;
2530 } 3322 }
2531 3323
2532 ev_stop (EV_A_ (W)w); 3324 ev_stop (EV_A_ (W)w);
3325
3326 EV_FREQUENT_CHECK;
2533} 3327}
2534 3328
2535void 3329void
2536ev_check_start (EV_P_ ev_check *w) 3330ev_check_start (EV_P_ ev_check *w)
2537{ 3331{
2538 if (expect_false (ev_is_active (w))) 3332 if (expect_false (ev_is_active (w)))
2539 return; 3333 return;
3334
3335 EV_FREQUENT_CHECK;
2540 3336
2541 ev_start (EV_A_ (W)w, ++checkcnt); 3337 ev_start (EV_A_ (W)w, ++checkcnt);
2542 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3338 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2543 checks [checkcnt - 1] = w; 3339 checks [checkcnt - 1] = w;
3340
3341 EV_FREQUENT_CHECK;
2544} 3342}
2545 3343
2546void 3344void
2547ev_check_stop (EV_P_ ev_check *w) 3345ev_check_stop (EV_P_ ev_check *w)
2548{ 3346{
2549 clear_pending (EV_A_ (W)w); 3347 clear_pending (EV_A_ (W)w);
2550 if (expect_false (!ev_is_active (w))) 3348 if (expect_false (!ev_is_active (w)))
2551 return; 3349 return;
2552 3350
3351 EV_FREQUENT_CHECK;
3352
2553 { 3353 {
2554 int active = ev_active (w); 3354 int active = ev_active (w);
2555 3355
2556 checks [active - 1] = checks [--checkcnt]; 3356 checks [active - 1] = checks [--checkcnt];
2557 ev_active (checks [active - 1]) = active; 3357 ev_active (checks [active - 1]) = active;
2558 } 3358 }
2559 3359
2560 ev_stop (EV_A_ (W)w); 3360 ev_stop (EV_A_ (W)w);
3361
3362 EV_FREQUENT_CHECK;
2561} 3363}
2562 3364
2563#if EV_EMBED_ENABLE 3365#if EV_EMBED_ENABLE
2564void noinline 3366void noinline
2565ev_embed_sweep (EV_P_ ev_embed *w) 3367ev_embed_sweep (EV_P_ ev_embed *w)
… …
2582embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3384embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2583{ 3385{
2584 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3386 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2585 3387
2586 { 3388 {
2587 struct ev_loop *loop = w->other; 3389 EV_P = w->other;
2588 3390
2589 while (fdchangecnt) 3391 while (fdchangecnt)
2590 { 3392 {
2591 fd_reify (EV_A); 3393 fd_reify (EV_A);
2592 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3394 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2593 } 3395 }
2594 } 3396 }
2595} 3397}
2596 3398
3399static void
3400embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3401{
3402 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3403
3404 ev_embed_stop (EV_A_ w);
3405
3406 {
3407 EV_P = w->other;
3408
3409 ev_loop_fork (EV_A);
3410 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3411 }
3412
3413 ev_embed_start (EV_A_ w);
3414}
3415
2597#if 0 3416#if 0
2598static void 3417static void
2599embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3418embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2600{ 3419{
2601 ev_idle_stop (EV_A_ idle); 3420 ev_idle_stop (EV_A_ idle);
… …
2607{ 3426{
2608 if (expect_false (ev_is_active (w))) 3427 if (expect_false (ev_is_active (w)))
2609 return; 3428 return;
2610 3429
2611 { 3430 {
2612 struct ev_loop *loop = w->other; 3431 EV_P = w->other;
2613 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3432 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2614 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3433 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2615 } 3434 }
3435
3436 EV_FREQUENT_CHECK;
2616 3437
2617 ev_set_priority (&w->io, ev_priority (w)); 3438 ev_set_priority (&w->io, ev_priority (w));
2618 ev_io_start (EV_A_ &w->io); 3439 ev_io_start (EV_A_ &w->io);
2619 3440
2620 ev_prepare_init (&w->prepare, embed_prepare_cb); 3441 ev_prepare_init (&w->prepare, embed_prepare_cb);
2621 ev_set_priority (&w->prepare, EV_MINPRI); 3442 ev_set_priority (&w->prepare, EV_MINPRI);
2622 ev_prepare_start (EV_A_ &w->prepare); 3443 ev_prepare_start (EV_A_ &w->prepare);
2623 3444
3445 ev_fork_init (&w->fork, embed_fork_cb);
3446 ev_fork_start (EV_A_ &w->fork);
3447
2624 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3448 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2625 3449
2626 ev_start (EV_A_ (W)w, 1); 3450 ev_start (EV_A_ (W)w, 1);
3451
3452 EV_FREQUENT_CHECK;
2627} 3453}
2628 3454
2629void 3455void
2630ev_embed_stop (EV_P_ ev_embed *w) 3456ev_embed_stop (EV_P_ ev_embed *w)
2631{ 3457{
2632 clear_pending (EV_A_ (W)w); 3458 clear_pending (EV_A_ (W)w);
2633 if (expect_false (!ev_is_active (w))) 3459 if (expect_false (!ev_is_active (w)))
2634 return; 3460 return;
2635 3461
3462 EV_FREQUENT_CHECK;
3463
2636 ev_io_stop (EV_A_ &w->io); 3464 ev_io_stop (EV_A_ &w->io);
2637 ev_prepare_stop (EV_A_ &w->prepare); 3465 ev_prepare_stop (EV_A_ &w->prepare);
3466 ev_fork_stop (EV_A_ &w->fork);
2638 3467
2639 ev_stop (EV_A_ (W)w); 3468 ev_stop (EV_A_ (W)w);
3469
3470 EV_FREQUENT_CHECK;
2640} 3471}
2641#endif 3472#endif
2642 3473
2643#if EV_FORK_ENABLE 3474#if EV_FORK_ENABLE
2644void 3475void
2645ev_fork_start (EV_P_ ev_fork *w) 3476ev_fork_start (EV_P_ ev_fork *w)
2646{ 3477{
2647 if (expect_false (ev_is_active (w))) 3478 if (expect_false (ev_is_active (w)))
2648 return; 3479 return;
3480
3481 EV_FREQUENT_CHECK;
2649 3482
2650 ev_start (EV_A_ (W)w, ++forkcnt); 3483 ev_start (EV_A_ (W)w, ++forkcnt);
2651 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3484 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2652 forks [forkcnt - 1] = w; 3485 forks [forkcnt - 1] = w;
3486
3487 EV_FREQUENT_CHECK;
2653} 3488}
2654 3489
2655void 3490void
2656ev_fork_stop (EV_P_ ev_fork *w) 3491ev_fork_stop (EV_P_ ev_fork *w)
2657{ 3492{
2658 clear_pending (EV_A_ (W)w); 3493 clear_pending (EV_A_ (W)w);
2659 if (expect_false (!ev_is_active (w))) 3494 if (expect_false (!ev_is_active (w)))
2660 return; 3495 return;
2661 3496
3497 EV_FREQUENT_CHECK;
3498
2662 { 3499 {
2663 int active = ev_active (w); 3500 int active = ev_active (w);
2664 3501
2665 forks [active - 1] = forks [--forkcnt]; 3502 forks [active - 1] = forks [--forkcnt];
2666 ev_active (forks [active - 1]) = active; 3503 ev_active (forks [active - 1]) = active;
2667 } 3504 }
2668 3505
2669 ev_stop (EV_A_ (W)w); 3506 ev_stop (EV_A_ (W)w);
3507
3508 EV_FREQUENT_CHECK;
2670} 3509}
2671#endif 3510#endif
2672 3511
2673#if EV_ASYNC_ENABLE 3512#if EV_ASYNC_ENABLE
2674void 3513void
… …
2676{ 3515{
2677 if (expect_false (ev_is_active (w))) 3516 if (expect_false (ev_is_active (w)))
2678 return; 3517 return;
2679 3518
2680 evpipe_init (EV_A); 3519 evpipe_init (EV_A);
3520
3521 EV_FREQUENT_CHECK;
2681 3522
2682 ev_start (EV_A_ (W)w, ++asynccnt); 3523 ev_start (EV_A_ (W)w, ++asynccnt);
2683 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 3524 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2684 asyncs [asynccnt - 1] = w; 3525 asyncs [asynccnt - 1] = w;
3526
3527 EV_FREQUENT_CHECK;
2685} 3528}
2686 3529
2687void 3530void
2688ev_async_stop (EV_P_ ev_async *w) 3531ev_async_stop (EV_P_ ev_async *w)
2689{ 3532{
2690 clear_pending (EV_A_ (W)w); 3533 clear_pending (EV_A_ (W)w);
2691 if (expect_false (!ev_is_active (w))) 3534 if (expect_false (!ev_is_active (w)))
2692 return; 3535 return;
2693 3536
3537 EV_FREQUENT_CHECK;
3538
2694 { 3539 {
2695 int active = ev_active (w); 3540 int active = ev_active (w);
2696 3541
2697 asyncs [active - 1] = asyncs [--asynccnt]; 3542 asyncs [active - 1] = asyncs [--asynccnt];
2698 ev_active (asyncs [active - 1]) = active; 3543 ev_active (asyncs [active - 1]) = active;
2699 } 3544 }
2700 3545
2701 ev_stop (EV_A_ (W)w); 3546 ev_stop (EV_A_ (W)w);
3547
3548 EV_FREQUENT_CHECK;
2702} 3549}
2703 3550
2704void 3551void
2705ev_async_send (EV_P_ ev_async *w) 3552ev_async_send (EV_P_ ev_async *w)
2706{ 3553{
2707 w->sent = 1; 3554 w->sent = 1;
2708 evpipe_write (EV_A_ &gotasync); 3555 evpipe_write (EV_A_ &async_pending);
2709} 3556}
2710#endif 3557#endif
2711 3558
2712/*****************************************************************************/ 3559/*****************************************************************************/
2713 3560
… …
2723once_cb (EV_P_ struct ev_once *once, int revents) 3570once_cb (EV_P_ struct ev_once *once, int revents)
2724{ 3571{
2725 void (*cb)(int revents, void *arg) = once->cb; 3572 void (*cb)(int revents, void *arg) = once->cb;
2726 void *arg = once->arg; 3573 void *arg = once->arg;
2727 3574
2728 ev_io_stop (EV_A_ &once->io); 3575 ev_io_stop (EV_A_ &once->io);
2729 ev_timer_stop (EV_A_ &once->to); 3576 ev_timer_stop (EV_A_ &once->to);
2730 ev_free (once); 3577 ev_free (once);
2731 3578
2732 cb (revents, arg); 3579 cb (revents, arg);
2733} 3580}
2734 3581
2735static void 3582static void
2736once_cb_io (EV_P_ ev_io *w, int revents) 3583once_cb_io (EV_P_ ev_io *w, int revents)
2737{ 3584{
2738 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3585 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3586
3587 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2739} 3588}
2740 3589
2741static void 3590static void
2742once_cb_to (EV_P_ ev_timer *w, int revents) 3591once_cb_to (EV_P_ ev_timer *w, int revents)
2743{ 3592{
2744 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3593 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3594
3595 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2745} 3596}
2746 3597
2747void 3598void
2748ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3599ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2749{ 3600{
… …
2771 ev_timer_set (&once->to, timeout, 0.); 3622 ev_timer_set (&once->to, timeout, 0.);
2772 ev_timer_start (EV_A_ &once->to); 3623 ev_timer_start (EV_A_ &once->to);
2773 } 3624 }
2774} 3625}
2775 3626
3627/*****************************************************************************/
3628
3629#if EV_WALK_ENABLE
3630void
3631ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3632{
3633 int i, j;
3634 ev_watcher_list *wl, *wn;
3635
3636 if (types & (EV_IO | EV_EMBED))
3637 for (i = 0; i < anfdmax; ++i)
3638 for (wl = anfds [i].head; wl; )
3639 {
3640 wn = wl->next;
3641
3642#if EV_EMBED_ENABLE
3643 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3644 {
3645 if (types & EV_EMBED)
3646 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3647 }
3648 else
3649#endif
3650#if EV_USE_INOTIFY
3651 if (ev_cb ((ev_io *)wl) == infy_cb)
3652 ;
3653 else
3654#endif
3655 if ((ev_io *)wl != &pipe_w)
3656 if (types & EV_IO)
3657 cb (EV_A_ EV_IO, wl);
3658
3659 wl = wn;
3660 }
3661
3662 if (types & (EV_TIMER | EV_STAT))
3663 for (i = timercnt + HEAP0; i-- > HEAP0; )
3664#if EV_STAT_ENABLE
3665 /*TODO: timer is not always active*/
3666 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3667 {
3668 if (types & EV_STAT)
3669 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3670 }
3671 else
3672#endif
3673 if (types & EV_TIMER)
3674 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3675
3676#if EV_PERIODIC_ENABLE
3677 if (types & EV_PERIODIC)
3678 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3679 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3680#endif
3681
3682#if EV_IDLE_ENABLE
3683 if (types & EV_IDLE)
3684 for (j = NUMPRI; i--; )
3685 for (i = idlecnt [j]; i--; )
3686 cb (EV_A_ EV_IDLE, idles [j][i]);
3687#endif
3688
3689#if EV_FORK_ENABLE
3690 if (types & EV_FORK)
3691 for (i = forkcnt; i--; )
3692 if (ev_cb (forks [i]) != embed_fork_cb)
3693 cb (EV_A_ EV_FORK, forks [i]);
3694#endif
3695
3696#if EV_ASYNC_ENABLE
3697 if (types & EV_ASYNC)
3698 for (i = asynccnt; i--; )
3699 cb (EV_A_ EV_ASYNC, asyncs [i]);
3700#endif
3701
3702 if (types & EV_PREPARE)
3703 for (i = preparecnt; i--; )
3704#if EV_EMBED_ENABLE
3705 if (ev_cb (prepares [i]) != embed_prepare_cb)
3706#endif
3707 cb (EV_A_ EV_PREPARE, prepares [i]);
3708
3709 if (types & EV_CHECK)
3710 for (i = checkcnt; i--; )
3711 cb (EV_A_ EV_CHECK, checks [i]);
3712
3713 if (types & EV_SIGNAL)
3714 for (i = 0; i < EV_NSIG - 1; ++i)
3715 for (wl = signals [i].head; wl; )
3716 {
3717 wn = wl->next;
3718 cb (EV_A_ EV_SIGNAL, wl);
3719 wl = wn;
3720 }
3721
3722 if (types & EV_CHILD)
3723 for (i = EV_PID_HASHSIZE; i--; )
3724 for (wl = childs [i]; wl; )
3725 {
3726 wn = wl->next;
3727 cb (EV_A_ EV_CHILD, wl);
3728 wl = wn;
3729 }
3730/* EV_STAT 0x00001000 /* stat data changed */
3731/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3732}
3733#endif
3734
2776#if EV_MULTIPLICITY 3735#if EV_MULTIPLICITY
2777 #include "ev_wrap.h" 3736 #include "ev_wrap.h"
2778#endif 3737#endif
2779 3738
2780#ifdef __cplusplus 3739#ifdef __cplusplus

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines