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Comparing libev/ev.c (file contents):
Revision 1.235 by root, Wed May 7 14:45:17 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
634/* hash table entry per inotify-id */
427typedef struct 635typedef struct
428{ 636{
429 WL head; 637 WL head;
430} ANFS; 638} ANFS;
639#endif
640
641/* Heap Entry */
642#if EV_HEAP_CACHE_AT
643 /* a heap element */
644 typedef struct {
645 ev_tstamp at;
646 WT w;
647 } ANHE;
648
649 #define ANHE_w(he) (he).w /* access watcher, read-write */
650 #define ANHE_at(he) (he).at /* access cached at, read-only */
651 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
652#else
653 /* a heap element */
654 typedef WT ANHE;
655
656 #define ANHE_w(he) (he)
657 #define ANHE_at(he) (he)->at
658 #define ANHE_at_cache(he)
431#endif 659#endif
432 660
433#if EV_MULTIPLICITY 661#if EV_MULTIPLICITY
434 662
435 struct ev_loop 663 struct ev_loop
… …
454 682
455 static int ev_default_loop_ptr; 683 static int ev_default_loop_ptr;
456 684
457#endif 685#endif
458 686
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
459/*****************************************************************************/ 699/*****************************************************************************/
460 700
701#ifndef EV_HAVE_EV_TIME
461ev_tstamp 702ev_tstamp
462ev_time (void) 703ev_time (void)
463{ 704{
464#if EV_USE_REALTIME 705#if EV_USE_REALTIME
706 if (expect_true (have_realtime))
707 {
465 struct timespec ts; 708 struct timespec ts;
466 clock_gettime (CLOCK_REALTIME, &ts); 709 clock_gettime (CLOCK_REALTIME, &ts);
467 return ts.tv_sec + ts.tv_nsec * 1e-9; 710 return ts.tv_sec + ts.tv_nsec * 1e-9;
468#else 711 }
712#endif
713
469 struct timeval tv; 714 struct timeval tv;
470 gettimeofday (&tv, 0); 715 gettimeofday (&tv, 0);
471 return tv.tv_sec + tv.tv_usec * 1e-6; 716 return tv.tv_sec + tv.tv_usec * 1e-6;
472#endif
473} 717}
718#endif
474 719
475ev_tstamp inline_size 720inline_size ev_tstamp
476get_clock (void) 721get_clock (void)
477{ 722{
478#if EV_USE_MONOTONIC 723#if EV_USE_MONOTONIC
479 if (expect_true (have_monotonic)) 724 if (expect_true (have_monotonic))
480 { 725 {
… …
513 struct timeval tv; 758 struct timeval tv;
514 759
515 tv.tv_sec = (time_t)delay; 760 tv.tv_sec = (time_t)delay;
516 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 761 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
517 762
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 */
518 select (0, 0, 0, 0, &tv); 766 select (0, 0, 0, 0, &tv);
519#endif 767#endif
520 } 768 }
521} 769}
522 770
523/*****************************************************************************/ 771/*****************************************************************************/
524 772
525#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 */
526 774
527int 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
528array_nextsize (int elem, int cur, int cnt) 778array_nextsize (int elem, int cur, int cnt)
529{ 779{
530 int ncur = cur + 1; 780 int ncur = cur + 1;
531 781
532 do 782 do
… …
549array_realloc (int elem, void *base, int *cur, int cnt) 799array_realloc (int elem, void *base, int *cur, int cnt)
550{ 800{
551 *cur = array_nextsize (elem, *cur, cnt); 801 *cur = array_nextsize (elem, *cur, cnt);
552 return ev_realloc (base, elem * *cur); 802 return ev_realloc (base, elem * *cur);
553} 803}
804
805#define array_init_zero(base,count) \
806 memset ((void *)(base), 0, sizeof (*(base)) * (count))
554 807
555#define array_needsize(type,base,cur,cnt,init) \ 808#define array_needsize(type,base,cur,cnt,init) \
556 if (expect_false ((cnt) > (cur))) \ 809 if (expect_false ((cnt) > (cur))) \
557 { \ 810 { \
558 int ocur_ = (cur); \ 811 int ocur_ = (cur); \
… …
570 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 823 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
571 } 824 }
572#endif 825#endif
573 826
574#define array_free(stem, idx) \ 827#define array_free(stem, idx) \
575 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
576 829
577/*****************************************************************************/ 830/*****************************************************************************/
831
832/* dummy callback for pending events */
833static void noinline
834pendingcb (EV_P_ ev_prepare *w, int revents)
835{
836}
578 837
579void noinline 838void noinline
580ev_feed_event (EV_P_ void *w, int revents) 839ev_feed_event (EV_P_ void *w, int revents)
581{ 840{
582 W w_ = (W)w; 841 W w_ = (W)w;
… …
591 pendings [pri][w_->pending - 1].w = w_; 850 pendings [pri][w_->pending - 1].w = w_;
592 pendings [pri][w_->pending - 1].events = revents; 851 pendings [pri][w_->pending - 1].events = revents;
593 } 852 }
594} 853}
595 854
596void 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
597queue_events (EV_P_ W *events, int eventcnt, int type) 871queue_events (EV_P_ W *events, int eventcnt, int type)
598{ 872{
599 int i; 873 int i;
600 874
601 for (i = 0; i < eventcnt; ++i) 875 for (i = 0; i < eventcnt; ++i)
602 ev_feed_event (EV_A_ events [i], type); 876 ev_feed_event (EV_A_ events [i], type);
603} 877}
604 878
605/*****************************************************************************/ 879/*****************************************************************************/
606 880
607void inline_size 881inline_speed void
608anfds_init (ANFD *base, int count)
609{
610 while (count--)
611 {
612 base->head = 0;
613 base->events = EV_NONE;
614 base->reify = 0;
615
616 ++base;
617 }
618}
619
620void inline_speed
621fd_event (EV_P_ int fd, int revents) 882fd_event_nc (EV_P_ int fd, int revents)
622{ 883{
623 ANFD *anfd = anfds + fd; 884 ANFD *anfd = anfds + fd;
624 ev_io *w; 885 ev_io *w;
625 886
626 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)
… …
630 if (ev) 891 if (ev)
631 ev_feed_event (EV_A_ (W)w, ev); 892 ev_feed_event (EV_A_ (W)w, ev);
632 } 893 }
633} 894}
634 895
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
635void 907void
636ev_feed_fd_event (EV_P_ int fd, int revents) 908ev_feed_fd_event (EV_P_ int fd, int revents)
637{ 909{
638 if (fd >= 0 && fd < anfdmax) 910 if (fd >= 0 && fd < anfdmax)
639 fd_event (EV_A_ fd, revents); 911 fd_event_nc (EV_A_ fd, revents);
640} 912}
641 913
642void inline_size 914/* make sure the external fd watch events are in-sync */
915/* with the kernel/libev internal state */
916inline_size void
643fd_reify (EV_P) 917fd_reify (EV_P)
644{ 918{
645 int i; 919 int i;
646 920
647 for (i = 0; i < fdchangecnt; ++i) 921 for (i = 0; i < fdchangecnt; ++i)
… …
656 events |= (unsigned char)w->events; 930 events |= (unsigned char)w->events;
657 931
658#if EV_SELECT_IS_WINSOCKET 932#if EV_SELECT_IS_WINSOCKET
659 if (events) 933 if (events)
660 { 934 {
661 unsigned long argp; 935 unsigned long arg;
662 #ifdef EV_FD_TO_WIN32_HANDLE
663 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 936 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
664 #else
665 anfd->handle = _get_osfhandle (fd);
666 #endif
667 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 937 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
668 } 938 }
669#endif 939#endif
670 940
671 { 941 {
672 unsigned char o_events = anfd->events; 942 unsigned char o_events = anfd->events;
673 unsigned char o_reify = anfd->reify; 943 unsigned char o_reify = anfd->reify;
674 944
675 anfd->reify = 0; 945 anfd->reify = 0;
676 anfd->events = events; 946 anfd->events = events;
677 947
678 if (o_events != events || o_reify & EV_IOFDSET) 948 if (o_events != events || o_reify & EV__IOFDSET)
679 backend_modify (EV_A_ fd, o_events, events); 949 backend_modify (EV_A_ fd, o_events, events);
680 } 950 }
681 } 951 }
682 952
683 fdchangecnt = 0; 953 fdchangecnt = 0;
684} 954}
685 955
686void inline_size 956/* something about the given fd changed */
957inline_size void
687fd_change (EV_P_ int fd, int flags) 958fd_change (EV_P_ int fd, int flags)
688{ 959{
689 unsigned char reify = anfds [fd].reify; 960 unsigned char reify = anfds [fd].reify;
690 anfds [fd].reify |= flags; 961 anfds [fd].reify |= flags;
691 962
… …
695 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 966 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
696 fdchanges [fdchangecnt - 1] = fd; 967 fdchanges [fdchangecnt - 1] = fd;
697 } 968 }
698} 969}
699 970
700void inline_speed 971/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
972inline_speed void
701fd_kill (EV_P_ int fd) 973fd_kill (EV_P_ int fd)
702{ 974{
703 ev_io *w; 975 ev_io *w;
704 976
705 while ((w = (ev_io *)anfds [fd].head)) 977 while ((w = (ev_io *)anfds [fd].head))
… …
707 ev_io_stop (EV_A_ w); 979 ev_io_stop (EV_A_ w);
708 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);
709 } 981 }
710} 982}
711 983
712int inline_size 984/* check whether the given fd is atcually valid, for error recovery */
985inline_size int
713fd_valid (int fd) 986fd_valid (int fd)
714{ 987{
715#ifdef _WIN32 988#ifdef _WIN32
716 return _get_osfhandle (fd) != -1; 989 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
717#else 990#else
718 return fcntl (fd, F_GETFD) != -1; 991 return fcntl (fd, F_GETFD) != -1;
719#endif 992#endif
720} 993}
721 994
… …
725{ 998{
726 int fd; 999 int fd;
727 1000
728 for (fd = 0; fd < anfdmax; ++fd) 1001 for (fd = 0; fd < anfdmax; ++fd)
729 if (anfds [fd].events) 1002 if (anfds [fd].events)
730 if (!fd_valid (fd) == -1 && errno == EBADF) 1003 if (!fd_valid (fd) && errno == EBADF)
731 fd_kill (EV_A_ fd); 1004 fd_kill (EV_A_ fd);
732} 1005}
733 1006
734/* 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 */
735static void noinline 1008static void noinline
… …
739 1012
740 for (fd = anfdmax; fd--; ) 1013 for (fd = anfdmax; fd--; )
741 if (anfds [fd].events) 1014 if (anfds [fd].events)
742 { 1015 {
743 fd_kill (EV_A_ fd); 1016 fd_kill (EV_A_ fd);
744 return; 1017 break;
745 } 1018 }
746} 1019}
747 1020
748/* 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 */
749static void noinline 1022static void noinline
… …
753 1026
754 for (fd = 0; fd < anfdmax; ++fd) 1027 for (fd = 0; fd < anfdmax; ++fd)
755 if (anfds [fd].events) 1028 if (anfds [fd].events)
756 { 1029 {
757 anfds [fd].events = 0; 1030 anfds [fd].events = 0;
1031 anfds [fd].emask = 0;
758 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1032 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
759 } 1033 }
760} 1034}
761 1035
762/*****************************************************************************/ 1036/*****************************************************************************/
1037
1038/*
1039 * the heap functions want a real array index. array index 0 uis guaranteed to not
1040 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1041 * the branching factor of the d-tree.
1042 */
763 1043
764/* 1044/*
765 * at the moment we allow libev the luxury of two heaps, 1045 * at the moment we allow libev the luxury of two heaps,
766 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap 1046 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
767 * which is more cache-efficient. 1047 * which is more cache-efficient.
768 * the difference is about 5% with 50000+ watchers. 1048 * the difference is about 5% with 50000+ watchers.
769 */ 1049 */
770#define USE_4HEAP !EV_MINIMAL
771#if USE_4HEAP 1050#if EV_USE_4HEAP
772 1051
1052#define DHEAP 4
773#define HEAP0 3 /* index of first element in heap */ 1053#define HEAP0 (DHEAP - 1) /* index of first element in heap */
1054#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
1055#define UPHEAP_DONE(p,k) ((p) == (k))
774 1056
775/* towards the root */ 1057/* away from the root */
776void inline_speed 1058inline_speed void
777upheap (WT *heap, int k) 1059downheap (ANHE *heap, int N, int k)
778{ 1060{
779 WT w = heap [k]; 1061 ANHE he = heap [k];
1062 ANHE *E = heap + N + HEAP0;
780 1063
781 for (;;) 1064 for (;;)
782 { 1065 {
783 int p = ((k - HEAP0 - 1) / 4) + HEAP0;
784
785 if (p >= HEAP0 || heap [p]->at <= w->at)
786 break;
787
788 heap [k] = heap [p];
789 ev_active (heap [k]) = k;
790 k = p;
791 }
792
793 heap [k] = w;
794 ev_active (heap [k]) = k;
795}
796
797/* away from the root */
798void inline_speed
799downheap (WT *heap, int N, int k)
800{
801 WT w = heap [k];
802 WT *E = heap + N + HEAP0;
803
804 for (;;)
805 {
806 ev_tstamp minat; 1066 ev_tstamp minat;
807 WT *minpos; 1067 ANHE *minpos;
808 WT *pos = heap + 4 * (k - HEAP0) + HEAP0; 1068 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
809 1069
810 // find minimum child 1070 /* find minimum child */
811 if (expect_true (pos +3 < E)) 1071 if (expect_true (pos + DHEAP - 1 < E))
812 { 1072 {
813 (minpos = pos + 0), (minat = (*minpos)->at); 1073 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
814 if (pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at); 1074 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
815 if (pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at); 1075 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
816 if (pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at); 1076 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1077 }
1078 else if (pos < E)
1079 {
1080 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1081 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1082 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1083 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
817 } 1084 }
818 else 1085 else
819 {
820 if (pos >= E)
821 break;
822
823 (minpos = pos + 0), (minat = (*minpos)->at);
824 if (pos + 1 < E && pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at);
825 if (pos + 2 < E && pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at);
826 if (pos + 3 < E && pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at);
827 }
828
829 if (w->at <= minat)
830 break; 1086 break;
831 1087
832 ev_active (*minpos) = k; 1088 if (ANHE_at (he) <= minat)
1089 break;
1090
833 heap [k] = *minpos; 1091 heap [k] = *minpos;
1092 ev_active (ANHE_w (*minpos)) = k;
834 1093
835 k = minpos - heap; 1094 k = minpos - heap;
836 } 1095 }
837 1096
838 heap [k] = w; 1097 heap [k] = he;
839 ev_active (heap [k]) = k; 1098 ev_active (ANHE_w (he)) = k;
840} 1099}
841 1100
842#else // 4HEAP 1101#else /* 4HEAP */
843 1102
844#define HEAP0 1 1103#define HEAP0 1
1104#define HPARENT(k) ((k) >> 1)
1105#define UPHEAP_DONE(p,k) (!(p))
845 1106
846/* towards the root */ 1107/* away from the root */
847void inline_speed 1108inline_speed void
848upheap (WT *heap, int k) 1109downheap (ANHE *heap, int N, int k)
849{ 1110{
850 WT w = heap [k]; 1111 ANHE he = heap [k];
851 1112
852 for (;;) 1113 for (;;)
853 { 1114 {
854 int p = k >> 1; 1115 int c = k << 1;
855 1116
856 /* maybe we could use a dummy element at heap [0]? */ 1117 if (c >= N + HEAP0)
857 if (!p || heap [p]->at <= w->at)
858 break; 1118 break;
859 1119
860 heap [k] = heap [p]; 1120 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
861 ev_active (heap [k]) = k; 1121 ? 1 : 0;
862 k = p;
863 }
864 1122
865 heap [k] = w; 1123 if (ANHE_at (he) <= ANHE_at (heap [c]))
866 ev_active (heap [k]) = k;
867}
868
869/* away from the root */
870void inline_speed
871downheap (WT *heap, int N, int k)
872{
873 WT w = heap [k];
874
875 for (;;)
876 {
877 int c = k << 1;
878
879 if (c > N)
880 break; 1124 break;
881 1125
882 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
883 ? 1 : 0;
884
885 if (w->at <= heap [c]->at)
886 break;
887
888 heap [k] = heap [c]; 1126 heap [k] = heap [c];
889 ((W)heap [k])->active = k; 1127 ev_active (ANHE_w (heap [k])) = k;
890 1128
891 k = c; 1129 k = c;
892 } 1130 }
893 1131
894 heap [k] = w; 1132 heap [k] = he;
1133 ev_active (ANHE_w (he)) = k;
1134}
1135#endif
1136
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];
895 ev_active (heap [k]) = k; 1151 ev_active (ANHE_w (heap [k])) = k;
896} 1152 k = p;
897#endif 1153 }
898 1154
899void inline_size 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
900adjustheap (WT *heap, int N, int k) 1161adjustheap (ANHE *heap, int N, int k)
901{ 1162{
1163 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
902 upheap (heap, k); 1164 upheap (heap, k);
1165 else
903 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);
904} 1179}
905 1180
906/*****************************************************************************/ 1181/*****************************************************************************/
907 1182
1183/* associate signal watchers to a signal signal */
908typedef struct 1184typedef struct
909{ 1185{
1186 EV_ATOMIC_T pending;
1187#if EV_MULTIPLICITY
1188 EV_P;
1189#endif
910 WL head; 1190 WL head;
911 EV_ATOMIC_T gotsig;
912} ANSIG; 1191} ANSIG;
913 1192
914static ANSIG *signals; 1193static ANSIG signals [EV_NSIG - 1];
915static int signalmax;
916
917static EV_ATOMIC_T gotsig;
918
919void inline_size
920signals_init (ANSIG *base, int count)
921{
922 while (count--)
923 {
924 base->head = 0;
925 base->gotsig = 0;
926
927 ++base;
928 }
929}
930 1194
931/*****************************************************************************/ 1195/*****************************************************************************/
932 1196
933void inline_speed 1197/* used to prepare libev internal fd's */
1198/* this is not fork-safe */
1199inline_speed void
934fd_intern (int fd) 1200fd_intern (int fd)
935{ 1201{
936#ifdef _WIN32 1202#ifdef _WIN32
937 int arg = 1; 1203 unsigned long arg = 1;
938 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1204 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
939#else 1205#else
940 fcntl (fd, F_SETFD, FD_CLOEXEC); 1206 fcntl (fd, F_SETFD, FD_CLOEXEC);
941 fcntl (fd, F_SETFL, O_NONBLOCK); 1207 fcntl (fd, F_SETFL, O_NONBLOCK);
942#endif 1208#endif
943} 1209}
944 1210
945static void noinline 1211static void noinline
946evpipe_init (EV_P) 1212evpipe_init (EV_P)
947{ 1213{
948 if (!ev_is_active (&pipeev)) 1214 if (!ev_is_active (&pipe_w))
949 { 1215 {
950#if EV_USE_EVENTFD 1216#if EV_USE_EVENTFD
1217 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1218 if (evfd < 0 && errno == EINVAL)
951 if ((evfd = eventfd (0, 0)) >= 0) 1219 evfd = eventfd (0, 0);
1220
1221 if (evfd >= 0)
952 { 1222 {
953 evpipe [0] = -1; 1223 evpipe [0] = -1;
954 fd_intern (evfd); 1224 fd_intern (evfd); /* doing it twice doesn't hurt */
955 ev_io_set (&pipeev, evfd, EV_READ); 1225 ev_io_set (&pipe_w, evfd, EV_READ);
956 } 1226 }
957 else 1227 else
958#endif 1228#endif
959 { 1229 {
960 while (pipe (evpipe)) 1230 while (pipe (evpipe))
961 syserr ("(libev) error creating signal/async pipe"); 1231 ev_syserr ("(libev) error creating signal/async pipe");
962 1232
963 fd_intern (evpipe [0]); 1233 fd_intern (evpipe [0]);
964 fd_intern (evpipe [1]); 1234 fd_intern (evpipe [1]);
965 ev_io_set (&pipeev, evpipe [0], EV_READ); 1235 ev_io_set (&pipe_w, evpipe [0], EV_READ);
966 } 1236 }
967 1237
968 ev_io_start (EV_A_ &pipeev); 1238 ev_io_start (EV_A_ &pipe_w);
969 ev_unref (EV_A); /* watcher should not keep loop alive */ 1239 ev_unref (EV_A); /* watcher should not keep loop alive */
970 } 1240 }
971} 1241}
972 1242
973void inline_size 1243inline_size void
974evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1244evpipe_write (EV_P_ EV_ATOMIC_T *flag)
975{ 1245{
976 if (!*flag) 1246 if (!*flag)
977 { 1247 {
978 int old_errno = errno; /* save errno because write might clobber it */ 1248 int old_errno = errno; /* save errno because write might clobber it */
… …
991 1261
992 errno = old_errno; 1262 errno = old_errno;
993 } 1263 }
994} 1264}
995 1265
1266/* called whenever the libev signal pipe */
1267/* got some events (signal, async) */
996static void 1268static void
997pipecb (EV_P_ ev_io *iow, int revents) 1269pipecb (EV_P_ ev_io *iow, int revents)
998{ 1270{
1271 int i;
1272
999#if EV_USE_EVENTFD 1273#if EV_USE_EVENTFD
1000 if (evfd >= 0) 1274 if (evfd >= 0)
1001 { 1275 {
1002 uint64_t counter; 1276 uint64_t counter;
1003 read (evfd, &counter, sizeof (uint64_t)); 1277 read (evfd, &counter, sizeof (uint64_t));
… …
1007 { 1281 {
1008 char dummy; 1282 char dummy;
1009 read (evpipe [0], &dummy, 1); 1283 read (evpipe [0], &dummy, 1);
1010 } 1284 }
1011 1285
1012 if (gotsig && ev_is_default_loop (EV_A)) 1286 if (sig_pending)
1013 { 1287 {
1014 int signum; 1288 sig_pending = 0;
1015 gotsig = 0;
1016 1289
1017 for (signum = signalmax; signum--; ) 1290 for (i = EV_NSIG - 1; i--; )
1018 if (signals [signum].gotsig) 1291 if (expect_false (signals [i].pending))
1019 ev_feed_signal_event (EV_A_ signum + 1); 1292 ev_feed_signal_event (EV_A_ i + 1);
1020 } 1293 }
1021 1294
1022#if EV_ASYNC_ENABLE 1295#if EV_ASYNC_ENABLE
1023 if (gotasync) 1296 if (async_pending)
1024 { 1297 {
1025 int i; 1298 async_pending = 0;
1026 gotasync = 0;
1027 1299
1028 for (i = asynccnt; i--; ) 1300 for (i = asynccnt; i--; )
1029 if (asyncs [i]->sent) 1301 if (asyncs [i]->sent)
1030 { 1302 {
1031 asyncs [i]->sent = 0; 1303 asyncs [i]->sent = 0;
… …
1039 1311
1040static void 1312static void
1041ev_sighandler (int signum) 1313ev_sighandler (int signum)
1042{ 1314{
1043#if EV_MULTIPLICITY 1315#if EV_MULTIPLICITY
1044 struct ev_loop *loop = &default_loop_struct; 1316 EV_P = signals [signum - 1].loop;
1045#endif 1317#endif
1046 1318
1047#if _WIN32 1319#ifdef _WIN32
1048 signal (signum, ev_sighandler); 1320 signal (signum, ev_sighandler);
1049#endif 1321#endif
1050 1322
1051 signals [signum - 1].gotsig = 1; 1323 signals [signum - 1].pending = 1;
1052 evpipe_write (EV_A_ &gotsig); 1324 evpipe_write (EV_A_ &sig_pending);
1053} 1325}
1054 1326
1055void noinline 1327void noinline
1056ev_feed_signal_event (EV_P_ int signum) 1328ev_feed_signal_event (EV_P_ int signum)
1057{ 1329{
1058 WL w; 1330 WL w;
1059 1331
1332 if (expect_false (signum <= 0 || signum > EV_NSIG))
1333 return;
1334
1335 --signum;
1336
1060#if EV_MULTIPLICITY 1337#if EV_MULTIPLICITY
1061 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 */
1062#endif 1339 /* or, likely more useful, feeding a signal nobody is waiting for */
1063 1340
1064 --signum; 1341 if (expect_false (signals [signum].loop != EV_A))
1065
1066 if (signum < 0 || signum >= signalmax)
1067 return; 1342 return;
1343#endif
1068 1344
1069 signals [signum].gotsig = 0; 1345 signals [signum].pending = 0;
1070 1346
1071 for (w = signals [signum].head; w; w = w->next) 1347 for (w = signals [signum].head; w; w = w->next)
1072 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1348 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1073} 1349}
1074 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
1075/*****************************************************************************/ 1371/*****************************************************************************/
1076 1372
1077static WL childs [EV_PID_HASHSIZE]; 1373static WL childs [EV_PID_HASHSIZE];
1078 1374
1079#ifndef _WIN32 1375#ifndef _WIN32
… …
1082 1378
1083#ifndef WIFCONTINUED 1379#ifndef WIFCONTINUED
1084# define WIFCONTINUED(status) 0 1380# define WIFCONTINUED(status) 0
1085#endif 1381#endif
1086 1382
1087void inline_speed 1383/* handle a single child status event */
1384inline_speed void
1088child_reap (EV_P_ int chain, int pid, int status) 1385child_reap (EV_P_ int chain, int pid, int status)
1089{ 1386{
1090 ev_child *w; 1387 ev_child *w;
1091 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1388 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1092 1389
… …
1105 1402
1106#ifndef WCONTINUED 1403#ifndef WCONTINUED
1107# define WCONTINUED 0 1404# define WCONTINUED 0
1108#endif 1405#endif
1109 1406
1407/* called on sigchld etc., calls waitpid */
1110static void 1408static void
1111childcb (EV_P_ ev_signal *sw, int revents) 1409childcb (EV_P_ ev_signal *sw, int revents)
1112{ 1410{
1113 int pid, status; 1411 int pid, status;
1114 1412
… …
1195 /* kqueue is borked on everything but netbsd apparently */ 1493 /* kqueue is borked on everything but netbsd apparently */
1196 /* 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 */
1197 flags &= ~EVBACKEND_KQUEUE; 1495 flags &= ~EVBACKEND_KQUEUE;
1198#endif 1496#endif
1199#ifdef __APPLE__ 1497#ifdef __APPLE__
1200 // flags &= ~EVBACKEND_KQUEUE; for documentation 1498 /* only select works correctly on that "unix-certified" platform */
1201 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 */
1202#endif 1501#endif
1203 1502
1204 return flags; 1503 return flags;
1205} 1504}
1206 1505
… …
1220ev_backend (EV_P) 1519ev_backend (EV_P)
1221{ 1520{
1222 return backend; 1521 return backend;
1223} 1522}
1224 1523
1524#if EV_MINIMAL < 2
1225unsigned int 1525unsigned int
1226ev_loop_count (EV_P) 1526ev_loop_count (EV_P)
1227{ 1527{
1228 return loop_count; 1528 return loop_count;
1229} 1529}
1230 1530
1531unsigned int
1532ev_loop_depth (EV_P)
1533{
1534 return loop_depth;
1535}
1536
1231void 1537void
1232ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1538ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1233{ 1539{
1234 io_blocktime = interval; 1540 io_blocktime = interval;
1235} 1541}
… …
1238ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1544ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1239{ 1545{
1240 timeout_blocktime = interval; 1546 timeout_blocktime = interval;
1241} 1547}
1242 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 */
1243static void noinline 1574static void noinline
1244loop_init (EV_P_ unsigned int flags) 1575loop_init (EV_P_ unsigned int flags)
1245{ 1576{
1246 if (!backend) 1577 if (!backend)
1247 { 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
1248#if EV_USE_MONOTONIC 1589#if EV_USE_MONOTONIC
1590 if (!have_monotonic)
1249 { 1591 {
1250 struct timespec ts; 1592 struct timespec ts;
1593
1251 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1594 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1252 have_monotonic = 1; 1595 have_monotonic = 1;
1253 } 1596 }
1254#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"));
1255 1609
1256 ev_rt_now = ev_time (); 1610 ev_rt_now = ev_time ();
1257 mn_now = get_clock (); 1611 mn_now = get_clock ();
1258 now_floor = mn_now; 1612 now_floor = mn_now;
1259 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
1260 1617
1261 io_blocktime = 0.; 1618 io_blocktime = 0.;
1262 timeout_blocktime = 0.; 1619 timeout_blocktime = 0.;
1263 backend = 0; 1620 backend = 0;
1264 backend_fd = -1; 1621 backend_fd = -1;
1265 gotasync = 0; 1622 sig_pending = 0;
1623#if EV_ASYNC_ENABLE
1624 async_pending = 0;
1625#endif
1266#if EV_USE_INOTIFY 1626#if EV_USE_INOTIFY
1267 fs_fd = -2; 1627 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1268#endif 1628#endif
1269 1629#if EV_USE_SIGNALFD
1270 /* pid check not overridable via env */ 1630 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1271#ifndef _WIN32
1272 if (flags & EVFLAG_FORKCHECK)
1273 curpid = getpid ();
1274#endif 1631#endif
1275
1276 if (!(flags & EVFLAG_NOENV)
1277 && !enable_secure ()
1278 && getenv ("LIBEV_FLAGS"))
1279 flags = atoi (getenv ("LIBEV_FLAGS"));
1280 1632
1281 if (!(flags & 0x0000ffffU)) 1633 if (!(flags & 0x0000ffffU))
1282 flags |= ev_recommended_backends (); 1634 flags |= ev_recommended_backends ();
1283 1635
1284#if EV_USE_PORT 1636#if EV_USE_PORT
… …
1295#endif 1647#endif
1296#if EV_USE_SELECT 1648#if EV_USE_SELECT
1297 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1649 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1298#endif 1650#endif
1299 1651
1652 ev_prepare_init (&pending_w, pendingcb);
1653
1300 ev_init (&pipeev, pipecb); 1654 ev_init (&pipe_w, pipecb);
1301 ev_set_priority (&pipeev, EV_MAXPRI); 1655 ev_set_priority (&pipe_w, EV_MAXPRI);
1302 } 1656 }
1303} 1657}
1304 1658
1659/* free up a loop structure */
1305static void noinline 1660static void noinline
1306loop_destroy (EV_P) 1661loop_destroy (EV_P)
1307{ 1662{
1308 int i; 1663 int i;
1309 1664
1310 if (ev_is_active (&pipeev)) 1665 if (ev_is_active (&pipe_w))
1311 { 1666 {
1312 ev_ref (EV_A); /* signal watcher */ 1667 /*ev_ref (EV_A);*/
1313 ev_io_stop (EV_A_ &pipeev); 1668 /*ev_io_stop (EV_A_ &pipe_w);*/
1314 1669
1315#if EV_USE_EVENTFD 1670#if EV_USE_EVENTFD
1316 if (evfd >= 0) 1671 if (evfd >= 0)
1317 close (evfd); 1672 close (evfd);
1318#endif 1673#endif
1319 1674
1320 if (evpipe [0] >= 0) 1675 if (evpipe [0] >= 0)
1321 { 1676 {
1322 close (evpipe [0]); 1677 EV_WIN32_CLOSE_FD (evpipe [0]);
1323 close (evpipe [1]); 1678 EV_WIN32_CLOSE_FD (evpipe [1]);
1324 } 1679 }
1325 } 1680 }
1681
1682#if EV_USE_SIGNALFD
1683 if (ev_is_active (&sigfd_w))
1684 close (sigfd);
1685#endif
1326 1686
1327#if EV_USE_INOTIFY 1687#if EV_USE_INOTIFY
1328 if (fs_fd >= 0) 1688 if (fs_fd >= 0)
1329 close (fs_fd); 1689 close (fs_fd);
1330#endif 1690#endif
… …
1354#if EV_IDLE_ENABLE 1714#if EV_IDLE_ENABLE
1355 array_free (idle, [i]); 1715 array_free (idle, [i]);
1356#endif 1716#endif
1357 } 1717 }
1358 1718
1359 ev_free (anfds); anfdmax = 0; 1719 ev_free (anfds); anfds = 0; anfdmax = 0;
1360 1720
1361 /* 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);
1362 array_free (fdchange, EMPTY); 1723 array_free (fdchange, EMPTY);
1363 array_free (timer, EMPTY); 1724 array_free (timer, EMPTY);
1364#if EV_PERIODIC_ENABLE 1725#if EV_PERIODIC_ENABLE
1365 array_free (periodic, EMPTY); 1726 array_free (periodic, EMPTY);
1366#endif 1727#endif
… …
1375 1736
1376 backend = 0; 1737 backend = 0;
1377} 1738}
1378 1739
1379#if EV_USE_INOTIFY 1740#if EV_USE_INOTIFY
1380void inline_size infy_fork (EV_P); 1741inline_size void infy_fork (EV_P);
1381#endif 1742#endif
1382 1743
1383void inline_size 1744inline_size void
1384loop_fork (EV_P) 1745loop_fork (EV_P)
1385{ 1746{
1386#if EV_USE_PORT 1747#if EV_USE_PORT
1387 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1748 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1388#endif 1749#endif
… …
1394#endif 1755#endif
1395#if EV_USE_INOTIFY 1756#if EV_USE_INOTIFY
1396 infy_fork (EV_A); 1757 infy_fork (EV_A);
1397#endif 1758#endif
1398 1759
1399 if (ev_is_active (&pipeev)) 1760 if (ev_is_active (&pipe_w))
1400 { 1761 {
1401 /* this "locks" the handlers against writing to the pipe */ 1762 /* this "locks" the handlers against writing to the pipe */
1402 /* while we modify the fd vars */ 1763 /* while we modify the fd vars */
1403 gotsig = 1; 1764 sig_pending = 1;
1404#if EV_ASYNC_ENABLE 1765#if EV_ASYNC_ENABLE
1405 gotasync = 1; 1766 async_pending = 1;
1406#endif 1767#endif
1407 1768
1408 ev_ref (EV_A); 1769 ev_ref (EV_A);
1409 ev_io_stop (EV_A_ &pipeev); 1770 ev_io_stop (EV_A_ &pipe_w);
1410 1771
1411#if EV_USE_EVENTFD 1772#if EV_USE_EVENTFD
1412 if (evfd >= 0) 1773 if (evfd >= 0)
1413 close (evfd); 1774 close (evfd);
1414#endif 1775#endif
1415 1776
1416 if (evpipe [0] >= 0) 1777 if (evpipe [0] >= 0)
1417 { 1778 {
1418 close (evpipe [0]); 1779 EV_WIN32_CLOSE_FD (evpipe [0]);
1419 close (evpipe [1]); 1780 EV_WIN32_CLOSE_FD (evpipe [1]);
1420 } 1781 }
1421 1782
1422 evpipe_init (EV_A); 1783 evpipe_init (EV_A);
1423 /* now iterate over everything, in case we missed something */ 1784 /* now iterate over everything, in case we missed something */
1424 pipecb (EV_A_ &pipeev, EV_READ); 1785 pipecb (EV_A_ &pipe_w, EV_READ);
1425 } 1786 }
1426 1787
1427 postfork = 0; 1788 postfork = 0;
1428} 1789}
1429 1790
1430#if EV_MULTIPLICITY 1791#if EV_MULTIPLICITY
1792
1431struct ev_loop * 1793struct ev_loop *
1432ev_loop_new (unsigned int flags) 1794ev_loop_new (unsigned int flags)
1433{ 1795{
1434 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));
1435 1797
1436 memset (loop, 0, sizeof (struct ev_loop)); 1798 memset (EV_A, 0, sizeof (struct ev_loop));
1437
1438 loop_init (EV_A_ flags); 1799 loop_init (EV_A_ flags);
1439 1800
1440 if (ev_backend (EV_A)) 1801 if (ev_backend (EV_A))
1441 return loop; 1802 return EV_A;
1442 1803
1443 return 0; 1804 return 0;
1444} 1805}
1445 1806
1446void 1807void
… …
1452 1813
1453void 1814void
1454ev_loop_fork (EV_P) 1815ev_loop_fork (EV_P)
1455{ 1816{
1456 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
1457} 1919}
1458#endif 1920#endif
1459 1921
1460#if EV_MULTIPLICITY 1922#if EV_MULTIPLICITY
1461struct ev_loop * 1923struct ev_loop *
… …
1466#endif 1928#endif
1467{ 1929{
1468 if (!ev_default_loop_ptr) 1930 if (!ev_default_loop_ptr)
1469 { 1931 {
1470#if EV_MULTIPLICITY 1932#if EV_MULTIPLICITY
1471 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1933 EV_P = ev_default_loop_ptr = &default_loop_struct;
1472#else 1934#else
1473 ev_default_loop_ptr = 1; 1935 ev_default_loop_ptr = 1;
1474#endif 1936#endif
1475 1937
1476 loop_init (EV_A_ flags); 1938 loop_init (EV_A_ flags);
… …
1493 1955
1494void 1956void
1495ev_default_destroy (void) 1957ev_default_destroy (void)
1496{ 1958{
1497#if EV_MULTIPLICITY 1959#if EV_MULTIPLICITY
1498 struct ev_loop *loop = ev_default_loop_ptr; 1960 EV_P = ev_default_loop_ptr;
1499#endif 1961#endif
1962
1963 ev_default_loop_ptr = 0;
1500 1964
1501#ifndef _WIN32 1965#ifndef _WIN32
1502 ev_ref (EV_A); /* child watcher */ 1966 ev_ref (EV_A); /* child watcher */
1503 ev_signal_stop (EV_A_ &childev); 1967 ev_signal_stop (EV_A_ &childev);
1504#endif 1968#endif
… …
1508 1972
1509void 1973void
1510ev_default_fork (void) 1974ev_default_fork (void)
1511{ 1975{
1512#if EV_MULTIPLICITY 1976#if EV_MULTIPLICITY
1513 struct ev_loop *loop = ev_default_loop_ptr; 1977 EV_P = ev_default_loop_ptr;
1514#endif 1978#endif
1515 1979
1516 if (backend)
1517 postfork = 1; /* must be in line with ev_loop_fork */ 1980 postfork = 1; /* must be in line with ev_loop_fork */
1518} 1981}
1519 1982
1520/*****************************************************************************/ 1983/*****************************************************************************/
1521 1984
1522void 1985void
1523ev_invoke (EV_P_ void *w, int revents) 1986ev_invoke (EV_P_ void *w, int revents)
1524{ 1987{
1525 EV_CB_INVOKE ((W)w, revents); 1988 EV_CB_INVOKE ((W)w, revents);
1526} 1989}
1527 1990
1528void inline_speed 1991unsigned int
1529call_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)
1530{ 2005{
1531 int pri; 2006 int pri;
1532 2007
1533 for (pri = NUMPRI; pri--; ) 2008 for (pri = NUMPRI; pri--; )
1534 while (pendingcnt [pri]) 2009 while (pendingcnt [pri])
1535 { 2010 {
1536 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2011 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1537 2012
1538 if (expect_true (p->w))
1539 {
1540 /*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 */
1541 2015
1542 p->w->pending = 0; 2016 p->w->pending = 0;
1543 EV_CB_INVOKE (p->w, p->events); 2017 EV_CB_INVOKE (p->w, p->events);
1544 } 2018 EV_FREQUENT_CHECK;
1545 } 2019 }
1546} 2020}
1547 2021
1548#if EV_IDLE_ENABLE 2022#if EV_IDLE_ENABLE
1549void inline_size 2023/* make idle watchers pending. this handles the "call-idle */
2024/* only when higher priorities are idle" logic */
2025inline_size void
1550idle_reify (EV_P) 2026idle_reify (EV_P)
1551{ 2027{
1552 if (expect_false (idleall)) 2028 if (expect_false (idleall))
1553 { 2029 {
1554 int pri; 2030 int pri;
… …
1566 } 2042 }
1567 } 2043 }
1568} 2044}
1569#endif 2045#endif
1570 2046
1571void inline_size 2047/* make timers pending */
2048inline_size void
1572timers_reify (EV_P) 2049timers_reify (EV_P)
1573{ 2050{
2051 EV_FREQUENT_CHECK;
2052
1574 while (timercnt && ev_at (timers [HEAP0]) <= mn_now) 2053 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1575 { 2054 {
1576 ev_timer *w = (ev_timer *)timers [HEAP0]; 2055 do
1577
1578 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1579
1580 /* first reschedule or stop timer */
1581 if (w->repeat)
1582 { 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
1583 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.));
1584 2069
1585 ev_at (w) += w->repeat; 2070 ANHE_at_cache (timers [HEAP0]);
1586 if (ev_at (w) < mn_now)
1587 ev_at (w) = mn_now;
1588
1589 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);
1590 } 2078 }
1591 else 2079 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1592 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1593 2080
1594 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 2081 feed_reverse_done (EV_A_ EV_TIMEOUT);
1595 } 2082 }
1596} 2083}
1597 2084
1598#if EV_PERIODIC_ENABLE 2085#if EV_PERIODIC_ENABLE
1599void inline_size 2086/* make periodics pending */
2087inline_size void
1600periodics_reify (EV_P) 2088periodics_reify (EV_P)
1601{ 2089{
2090 EV_FREQUENT_CHECK;
2091
1602 while (periodiccnt && ev_at (periodics [HEAP0]) <= ev_rt_now) 2092 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1603 { 2093 {
1604 ev_periodic *w = (ev_periodic *)periodics [HEAP0]; 2094 int feed_count = 0;
1605 2095
1606 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2096 do
1607
1608 /* first reschedule or stop timer */
1609 if (w->reschedule_cb)
1610 { 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 {
1611 ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON); 2105 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2106
1612 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
2109 ANHE_at_cache (periodics [HEAP0]);
1613 downheap (periodics, periodiccnt, 1); 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);
1614 } 2136 }
1615 else if (w->interval) 2137 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1616 {
1617 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1618 if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1619 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1620 downheap (periodics, periodiccnt, HEAP0);
1621 }
1622 else
1623 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1624 2138
1625 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2139 feed_reverse_done (EV_A_ EV_PERIODIC);
1626 } 2140 }
1627} 2141}
1628 2142
2143/* simply recalculate all periodics */
2144/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1629static void noinline 2145static void noinline
1630periodics_reschedule (EV_P) 2146periodics_reschedule (EV_P)
1631{ 2147{
1632 int i; 2148 int i;
1633 2149
1634 /* adjust periodics after time jump */ 2150 /* adjust periodics after time jump */
1635 for (i = 1; i <= periodiccnt; ++i) 2151 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1636 { 2152 {
1637 ev_periodic *w = (ev_periodic *)periodics [i]; 2153 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1638 2154
1639 if (w->reschedule_cb) 2155 if (w->reschedule_cb)
1640 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2156 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1641 else if (w->interval) 2157 else if (w->interval)
1642 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;
2159
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)
1643 } 2174 {
1644 2175 ANHE *he = timers + i + HEAP0;
1645 /* now rebuild the heap */ 2176 ANHE_w (*he)->at += adjust;
1646 for (i = periodiccnt >> 1; --i; ) 2177 ANHE_at_cache (*he);
1647 downheap (periodics, periodiccnt, i + HEAP0); 2178 }
1648} 2179}
1649#endif
1650 2180
1651void 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
1652time_update (EV_P_ ev_tstamp max_block) 2184time_update (EV_P_ ev_tstamp max_block)
1653{ 2185{
1654 int i;
1655
1656#if EV_USE_MONOTONIC 2186#if EV_USE_MONOTONIC
1657 if (expect_true (have_monotonic)) 2187 if (expect_true (have_monotonic))
1658 { 2188 {
2189 int i;
1659 ev_tstamp odiff = rtmn_diff; 2190 ev_tstamp odiff = rtmn_diff;
1660 2191
1661 mn_now = get_clock (); 2192 mn_now = get_clock ();
1662 2193
1663 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2194 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1689 ev_rt_now = ev_time (); 2220 ev_rt_now = ev_time ();
1690 mn_now = get_clock (); 2221 mn_now = get_clock ();
1691 now_floor = mn_now; 2222 now_floor = mn_now;
1692 } 2223 }
1693 2224
2225 /* no timer adjustment, as the monotonic clock doesn't jump */
2226 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1694# if EV_PERIODIC_ENABLE 2227# if EV_PERIODIC_ENABLE
1695 periodics_reschedule (EV_A); 2228 periodics_reschedule (EV_A);
1696# endif 2229# endif
1697 /* no timer adjustment, as the monotonic clock doesn't jump */
1698 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1699 } 2230 }
1700 else 2231 else
1701#endif 2232#endif
1702 { 2233 {
1703 ev_rt_now = ev_time (); 2234 ev_rt_now = ev_time ();
1704 2235
1705 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))
1706 { 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);
1707#if EV_PERIODIC_ENABLE 2240#if EV_PERIODIC_ENABLE
1708 periodics_reschedule (EV_A); 2241 periodics_reschedule (EV_A);
1709#endif 2242#endif
1710 /* adjust timers. this is easy, as the offset is the same for all of them */
1711 for (i = 1; i <= timercnt; ++i)
1712 ev_at (timers [i]) += ev_rt_now - mn_now;
1713 } 2243 }
1714 2244
1715 mn_now = ev_rt_now; 2245 mn_now = ev_rt_now;
1716 } 2246 }
1717} 2247}
1718 2248
1719void 2249void
1720ev_ref (EV_P)
1721{
1722 ++activecnt;
1723}
1724
1725void
1726ev_unref (EV_P)
1727{
1728 --activecnt;
1729}
1730
1731static int loop_done;
1732
1733void
1734ev_loop (EV_P_ int flags) 2250ev_loop (EV_P_ int flags)
1735{ 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
1736 loop_done = EVUNLOOP_CANCEL; 2258 loop_done = EVUNLOOP_CANCEL;
1737 2259
1738 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 */
1739 2261
1740 do 2262 do
1741 { 2263 {
2264#if EV_VERIFY >= 2
2265 ev_loop_verify (EV_A);
2266#endif
2267
1742#ifndef _WIN32 2268#ifndef _WIN32
1743 if (expect_false (curpid)) /* penalise the forking check even more */ 2269 if (expect_false (curpid)) /* penalise the forking check even more */
1744 if (expect_false (getpid () != curpid)) 2270 if (expect_false (getpid () != curpid))
1745 { 2271 {
1746 curpid = getpid (); 2272 curpid = getpid ();
… …
1752 /* we might have forked, so queue fork handlers */ 2278 /* we might have forked, so queue fork handlers */
1753 if (expect_false (postfork)) 2279 if (expect_false (postfork))
1754 if (forkcnt) 2280 if (forkcnt)
1755 { 2281 {
1756 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2282 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1757 call_pending (EV_A); 2283 EV_INVOKE_PENDING;
1758 } 2284 }
1759#endif 2285#endif
1760 2286
1761 /* queue prepare watchers (and execute them) */ 2287 /* queue prepare watchers (and execute them) */
1762 if (expect_false (preparecnt)) 2288 if (expect_false (preparecnt))
1763 { 2289 {
1764 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2290 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1765 call_pending (EV_A); 2291 EV_INVOKE_PENDING;
1766 } 2292 }
1767 2293
1768 if (expect_false (!activecnt)) 2294 if (expect_false (loop_done))
1769 break; 2295 break;
1770 2296
1771 /* we might have forked, so reify kernel state if necessary */ 2297 /* we might have forked, so reify kernel state if necessary */
1772 if (expect_false (postfork)) 2298 if (expect_false (postfork))
1773 loop_fork (EV_A); 2299 loop_fork (EV_A);
… …
1780 ev_tstamp waittime = 0.; 2306 ev_tstamp waittime = 0.;
1781 ev_tstamp sleeptime = 0.; 2307 ev_tstamp sleeptime = 0.;
1782 2308
1783 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2309 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1784 { 2310 {
2311 /* remember old timestamp for io_blocktime calculation */
2312 ev_tstamp prev_mn_now = mn_now;
2313
1785 /* update time to cancel out callback processing overhead */ 2314 /* update time to cancel out callback processing overhead */
1786 time_update (EV_A_ 1e100); 2315 time_update (EV_A_ 1e100);
1787 2316
1788 waittime = MAX_BLOCKTIME; 2317 waittime = MAX_BLOCKTIME;
1789 2318
1790 if (timercnt) 2319 if (timercnt)
1791 { 2320 {
1792 ev_tstamp to = ev_at (timers [HEAP0]) - mn_now + backend_fudge; 2321 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1793 if (waittime > to) waittime = to; 2322 if (waittime > to) waittime = to;
1794 } 2323 }
1795 2324
1796#if EV_PERIODIC_ENABLE 2325#if EV_PERIODIC_ENABLE
1797 if (periodiccnt) 2326 if (periodiccnt)
1798 { 2327 {
1799 ev_tstamp to = ev_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2328 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1800 if (waittime > to) waittime = to; 2329 if (waittime > to) waittime = to;
1801 } 2330 }
1802#endif 2331#endif
1803 2332
2333 /* don't let timeouts decrease the waittime below timeout_blocktime */
1804 if (expect_false (waittime < timeout_blocktime)) 2334 if (expect_false (waittime < timeout_blocktime))
1805 waittime = timeout_blocktime; 2335 waittime = timeout_blocktime;
1806 2336
1807 sleeptime = waittime - backend_fudge; 2337 /* extra check because io_blocktime is commonly 0 */
1808
1809 if (expect_true (sleeptime > io_blocktime)) 2338 if (expect_false (io_blocktime))
1810 sleeptime = io_blocktime;
1811
1812 if (sleeptime)
1813 { 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 {
1814 ev_sleep (sleeptime); 2347 ev_sleep (sleeptime);
1815 waittime -= sleeptime; 2348 waittime -= sleeptime;
2349 }
1816 } 2350 }
1817 } 2351 }
1818 2352
2353#if EV_MINIMAL < 2
1819 ++loop_count; 2354 ++loop_count;
2355#endif
2356 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1820 backend_poll (EV_A_ waittime); 2357 backend_poll (EV_A_ waittime);
2358 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1821 2359
1822 /* update ev_rt_now, do magic */ 2360 /* update ev_rt_now, do magic */
1823 time_update (EV_A_ waittime + sleeptime); 2361 time_update (EV_A_ waittime + sleeptime);
1824 } 2362 }
1825 2363
… …
1836 2374
1837 /* queue check watchers, to be executed first */ 2375 /* queue check watchers, to be executed first */
1838 if (expect_false (checkcnt)) 2376 if (expect_false (checkcnt))
1839 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2377 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1840 2378
1841 call_pending (EV_A); 2379 EV_INVOKE_PENDING;
1842 } 2380 }
1843 while (expect_true ( 2381 while (expect_true (
1844 activecnt 2382 activecnt
1845 && !loop_done 2383 && !loop_done
1846 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2384 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1847 )); 2385 ));
1848 2386
1849 if (loop_done == EVUNLOOP_ONE) 2387 if (loop_done == EVUNLOOP_ONE)
1850 loop_done = EVUNLOOP_CANCEL; 2388 loop_done = EVUNLOOP_CANCEL;
2389
2390#if EV_MINIMAL < 2
2391 --loop_depth;
2392#endif
1851} 2393}
1852 2394
1853void 2395void
1854ev_unloop (EV_P_ int how) 2396ev_unloop (EV_P_ int how)
1855{ 2397{
1856 loop_done = how; 2398 loop_done = how;
1857} 2399}
1858 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
1859/*****************************************************************************/ 2438/*****************************************************************************/
2439/* singly-linked list management, used when the expected list length is short */
1860 2440
1861void inline_size 2441inline_size void
1862wlist_add (WL *head, WL elem) 2442wlist_add (WL *head, WL elem)
1863{ 2443{
1864 elem->next = *head; 2444 elem->next = *head;
1865 *head = elem; 2445 *head = elem;
1866} 2446}
1867 2447
1868void inline_size 2448inline_size void
1869wlist_del (WL *head, WL elem) 2449wlist_del (WL *head, WL elem)
1870{ 2450{
1871 while (*head) 2451 while (*head)
1872 { 2452 {
1873 if (*head == elem) 2453 if (expect_true (*head == elem))
1874 { 2454 {
1875 *head = elem->next; 2455 *head = elem->next;
1876 return; 2456 break;
1877 } 2457 }
1878 2458
1879 head = &(*head)->next; 2459 head = &(*head)->next;
1880 } 2460 }
1881} 2461}
1882 2462
1883void inline_speed 2463/* internal, faster, version of ev_clear_pending */
2464inline_speed void
1884clear_pending (EV_P_ W w) 2465clear_pending (EV_P_ W w)
1885{ 2466{
1886 if (w->pending) 2467 if (w->pending)
1887 { 2468 {
1888 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2469 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1889 w->pending = 0; 2470 w->pending = 0;
1890 } 2471 }
1891} 2472}
1892 2473
1893int 2474int
… …
1897 int pending = w_->pending; 2478 int pending = w_->pending;
1898 2479
1899 if (expect_true (pending)) 2480 if (expect_true (pending))
1900 { 2481 {
1901 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2482 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2483 p->w = (W)&pending_w;
1902 w_->pending = 0; 2484 w_->pending = 0;
1903 p->w = 0;
1904 return p->events; 2485 return p->events;
1905 } 2486 }
1906 else 2487 else
1907 return 0; 2488 return 0;
1908} 2489}
1909 2490
1910void inline_size 2491inline_size void
1911pri_adjust (EV_P_ W w) 2492pri_adjust (EV_P_ W w)
1912{ 2493{
1913 int pri = w->priority; 2494 int pri = ev_priority (w);
1914 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2495 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1915 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2496 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1916 w->priority = pri; 2497 ev_set_priority (w, pri);
1917} 2498}
1918 2499
1919void inline_speed 2500inline_speed void
1920ev_start (EV_P_ W w, int active) 2501ev_start (EV_P_ W w, int active)
1921{ 2502{
1922 pri_adjust (EV_A_ w); 2503 pri_adjust (EV_A_ w);
1923 w->active = active; 2504 w->active = active;
1924 ev_ref (EV_A); 2505 ev_ref (EV_A);
1925} 2506}
1926 2507
1927void inline_size 2508inline_size void
1928ev_stop (EV_P_ W w) 2509ev_stop (EV_P_ W w)
1929{ 2510{
1930 ev_unref (EV_A); 2511 ev_unref (EV_A);
1931 w->active = 0; 2512 w->active = 0;
1932} 2513}
… …
1939 int fd = w->fd; 2520 int fd = w->fd;
1940 2521
1941 if (expect_false (ev_is_active (w))) 2522 if (expect_false (ev_is_active (w)))
1942 return; 2523 return;
1943 2524
1944 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;
1945 2529
1946 ev_start (EV_A_ (W)w, 1); 2530 ev_start (EV_A_ (W)w, 1);
1947 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2531 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1948 wlist_add (&anfds[fd].head, (WL)w); 2532 wlist_add (&anfds[fd].head, (WL)w);
1949 2533
1950 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2534 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1951 w->events &= ~EV_IOFDSET; 2535 w->events &= ~EV__IOFDSET;
2536
2537 EV_FREQUENT_CHECK;
1952} 2538}
1953 2539
1954void noinline 2540void noinline
1955ev_io_stop (EV_P_ ev_io *w) 2541ev_io_stop (EV_P_ ev_io *w)
1956{ 2542{
1957 clear_pending (EV_A_ (W)w); 2543 clear_pending (EV_A_ (W)w);
1958 if (expect_false (!ev_is_active (w))) 2544 if (expect_false (!ev_is_active (w)))
1959 return; 2545 return;
1960 2546
1961 assert (("ev_io_start 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;
1962 2550
1963 wlist_del (&anfds[w->fd].head, (WL)w); 2551 wlist_del (&anfds[w->fd].head, (WL)w);
1964 ev_stop (EV_A_ (W)w); 2552 ev_stop (EV_A_ (W)w);
1965 2553
1966 fd_change (EV_A_ w->fd, 1); 2554 fd_change (EV_A_ w->fd, 1);
2555
2556 EV_FREQUENT_CHECK;
1967} 2557}
1968 2558
1969void noinline 2559void noinline
1970ev_timer_start (EV_P_ ev_timer *w) 2560ev_timer_start (EV_P_ ev_timer *w)
1971{ 2561{
1972 if (expect_false (ev_is_active (w))) 2562 if (expect_false (ev_is_active (w)))
1973 return; 2563 return;
1974 2564
1975 ev_at (w) += mn_now; 2565 ev_at (w) += mn_now;
1976 2566
1977 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.));
1978 2568
2569 EV_FREQUENT_CHECK;
2570
2571 ++timercnt;
1979 ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1); 2572 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1980 array_needsize (WT, timers, timermax, timercnt + HEAP0, EMPTY2); 2573 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1981 timers [ev_active (w)] = (WT)w; 2574 ANHE_w (timers [ev_active (w)]) = (WT)w;
2575 ANHE_at_cache (timers [ev_active (w)]);
1982 upheap (timers, ev_active (w)); 2576 upheap (timers, ev_active (w));
1983 2577
2578 EV_FREQUENT_CHECK;
2579
1984 /*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/ 2580 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1985} 2581}
1986 2582
1987void noinline 2583void noinline
1988ev_timer_stop (EV_P_ ev_timer *w) 2584ev_timer_stop (EV_P_ ev_timer *w)
1989{ 2585{
1990 clear_pending (EV_A_ (W)w); 2586 clear_pending (EV_A_ (W)w);
1991 if (expect_false (!ev_is_active (w))) 2587 if (expect_false (!ev_is_active (w)))
1992 return; 2588 return;
1993 2589
2590 EV_FREQUENT_CHECK;
2591
1994 { 2592 {
1995 int active = ev_active (w); 2593 int active = ev_active (w);
1996 2594
1997 assert (("internal timer heap corruption", timers [active] == (WT)w)); 2595 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
1998 2596
2597 --timercnt;
2598
1999 if (expect_true (active < timercnt + HEAP0 - 1)) 2599 if (expect_true (active < timercnt + HEAP0))
2000 { 2600 {
2001 timers [active] = timers [timercnt + HEAP0 - 1]; 2601 timers [active] = timers [timercnt + HEAP0];
2002 adjustheap (timers, timercnt, active); 2602 adjustheap (timers, timercnt, active);
2003 } 2603 }
2004
2005 --timercnt;
2006 } 2604 }
2007 2605
2008 ev_at (w) -= mn_now; 2606 ev_at (w) -= mn_now;
2009 2607
2010 ev_stop (EV_A_ (W)w); 2608 ev_stop (EV_A_ (W)w);
2609
2610 EV_FREQUENT_CHECK;
2011} 2611}
2012 2612
2013void noinline 2613void noinline
2014ev_timer_again (EV_P_ ev_timer *w) 2614ev_timer_again (EV_P_ ev_timer *w)
2015{ 2615{
2616 EV_FREQUENT_CHECK;
2617
2016 if (ev_is_active (w)) 2618 if (ev_is_active (w))
2017 { 2619 {
2018 if (w->repeat) 2620 if (w->repeat)
2019 { 2621 {
2020 ev_at (w) = mn_now + w->repeat; 2622 ev_at (w) = mn_now + w->repeat;
2623 ANHE_at_cache (timers [ev_active (w)]);
2021 adjustheap (timers, timercnt, ev_active (w)); 2624 adjustheap (timers, timercnt, ev_active (w));
2022 } 2625 }
2023 else 2626 else
2024 ev_timer_stop (EV_A_ w); 2627 ev_timer_stop (EV_A_ w);
2025 } 2628 }
2026 else if (w->repeat) 2629 else if (w->repeat)
2027 { 2630 {
2028 ev_at (w) = w->repeat; 2631 ev_at (w) = w->repeat;
2029 ev_timer_start (EV_A_ w); 2632 ev_timer_start (EV_A_ w);
2030 } 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.);
2031} 2642}
2032 2643
2033#if EV_PERIODIC_ENABLE 2644#if EV_PERIODIC_ENABLE
2034void noinline 2645void noinline
2035ev_periodic_start (EV_P_ ev_periodic *w) 2646ev_periodic_start (EV_P_ ev_periodic *w)
… …
2039 2650
2040 if (w->reschedule_cb) 2651 if (w->reschedule_cb)
2041 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2652 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2042 else if (w->interval) 2653 else if (w->interval)
2043 { 2654 {
2044 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.));
2045 /* 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 */
2046 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;
2047 } 2658 }
2048 else 2659 else
2049 ev_at (w) = w->offset; 2660 ev_at (w) = w->offset;
2050 2661
2662 EV_FREQUENT_CHECK;
2663
2664 ++periodiccnt;
2051 ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1); 2665 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2052 array_needsize (WT, periodics, periodicmax, periodiccnt + HEAP0, EMPTY2); 2666 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2053 periodics [ev_active (w)] = (WT)w; 2667 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2668 ANHE_at_cache (periodics [ev_active (w)]);
2054 upheap (periodics, ev_active (w)); 2669 upheap (periodics, ev_active (w));
2055 2670
2671 EV_FREQUENT_CHECK;
2672
2056 /*assert (("internal periodic heap corruption", periodics [ev_active (w)] == w));*/ 2673 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2057} 2674}
2058 2675
2059void noinline 2676void noinline
2060ev_periodic_stop (EV_P_ ev_periodic *w) 2677ev_periodic_stop (EV_P_ ev_periodic *w)
2061{ 2678{
2062 clear_pending (EV_A_ (W)w); 2679 clear_pending (EV_A_ (W)w);
2063 if (expect_false (!ev_is_active (w))) 2680 if (expect_false (!ev_is_active (w)))
2064 return; 2681 return;
2065 2682
2683 EV_FREQUENT_CHECK;
2684
2066 { 2685 {
2067 int active = ev_active (w); 2686 int active = ev_active (w);
2068 2687
2069 assert (("internal periodic heap corruption", periodics [active] == (WT)w)); 2688 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2070 2689
2690 --periodiccnt;
2691
2071 if (expect_true (active < periodiccnt + HEAP0 - 1)) 2692 if (expect_true (active < periodiccnt + HEAP0))
2072 { 2693 {
2073 periodics [active] = periodics [periodiccnt + HEAP0 - 1]; 2694 periodics [active] = periodics [periodiccnt + HEAP0];
2074 adjustheap (periodics, periodiccnt, active); 2695 adjustheap (periodics, periodiccnt, active);
2075 } 2696 }
2076
2077 --periodiccnt;
2078 } 2697 }
2079 2698
2080 ev_stop (EV_A_ (W)w); 2699 ev_stop (EV_A_ (W)w);
2700
2701 EV_FREQUENT_CHECK;
2081} 2702}
2082 2703
2083void noinline 2704void noinline
2084ev_periodic_again (EV_P_ ev_periodic *w) 2705ev_periodic_again (EV_P_ ev_periodic *w)
2085{ 2706{
… …
2094#endif 2715#endif
2095 2716
2096void noinline 2717void noinline
2097ev_signal_start (EV_P_ ev_signal *w) 2718ev_signal_start (EV_P_ ev_signal *w)
2098{ 2719{
2099#if EV_MULTIPLICITY
2100 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2101#endif
2102 if (expect_false (ev_is_active (w))) 2720 if (expect_false (ev_is_active (w)))
2103 return; 2721 return;
2104 2722
2105 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));
2106 2724
2107 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));
2108 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)
2109 { 2736 {
2110#ifndef _WIN32 2737 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2111 sigset_t full, prev; 2738 if (sigfd < 0 && errno == EINVAL)
2112 sigfillset (&full); 2739 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2113 sigprocmask (SIG_SETMASK, &full, &prev);
2114#endif
2115 2740
2116 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2741 if (sigfd >= 0)
2742 {
2743 fd_intern (sigfd); /* doing it twice will not hurt */
2117 2744
2118#ifndef _WIN32 2745 sigemptyset (&sigfd_set);
2119 sigprocmask (SIG_SETMASK, &prev, 0); 2746
2120#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 }
2121 } 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
2122 2763
2123 ev_start (EV_A_ (W)w, 1); 2764 ev_start (EV_A_ (W)w, 1);
2124 wlist_add (&signals [w->signum - 1].head, (WL)w); 2765 wlist_add (&signals [w->signum - 1].head, (WL)w);
2125 2766
2126 if (!((WL)w)->next) 2767 if (!((WL)w)->next)
2768# if EV_USE_SIGNALFD
2769 if (sigfd < 0) /*TODO*/
2770# endif
2127 { 2771 {
2128#if _WIN32 2772# ifdef _WIN32
2773 evpipe_init (EV_A);
2774
2129 signal (w->signum, ev_sighandler); 2775 signal (w->signum, ev_sighandler);
2130#else 2776# else
2131 struct sigaction sa; 2777 struct sigaction sa;
2778
2779 evpipe_init (EV_A);
2780
2132 sa.sa_handler = ev_sighandler; 2781 sa.sa_handler = ev_sighandler;
2133 sigfillset (&sa.sa_mask); 2782 sigfillset (&sa.sa_mask);
2134 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 */
2135 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);
2136#endif 2789#endif
2137 } 2790 }
2791
2792 EV_FREQUENT_CHECK;
2138} 2793}
2139 2794
2140void noinline 2795void noinline
2141ev_signal_stop (EV_P_ ev_signal *w) 2796ev_signal_stop (EV_P_ ev_signal *w)
2142{ 2797{
2143 clear_pending (EV_A_ (W)w); 2798 clear_pending (EV_A_ (W)w);
2144 if (expect_false (!ev_is_active (w))) 2799 if (expect_false (!ev_is_active (w)))
2145 return; 2800 return;
2146 2801
2802 EV_FREQUENT_CHECK;
2803
2147 wlist_del (&signals [w->signum - 1].head, (WL)w); 2804 wlist_del (&signals [w->signum - 1].head, (WL)w);
2148 ev_stop (EV_A_ (W)w); 2805 ev_stop (EV_A_ (W)w);
2149 2806
2150 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
2151 signal (w->signum, SIG_DFL); 2826 signal (w->signum, SIG_DFL);
2827 }
2828
2829 EV_FREQUENT_CHECK;
2152} 2830}
2153 2831
2154void 2832void
2155ev_child_start (EV_P_ ev_child *w) 2833ev_child_start (EV_P_ ev_child *w)
2156{ 2834{
2157#if EV_MULTIPLICITY 2835#if EV_MULTIPLICITY
2158 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));
2159#endif 2837#endif
2160 if (expect_false (ev_is_active (w))) 2838 if (expect_false (ev_is_active (w)))
2161 return; 2839 return;
2162 2840
2841 EV_FREQUENT_CHECK;
2842
2163 ev_start (EV_A_ (W)w, 1); 2843 ev_start (EV_A_ (W)w, 1);
2164 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;
2165} 2847}
2166 2848
2167void 2849void
2168ev_child_stop (EV_P_ ev_child *w) 2850ev_child_stop (EV_P_ ev_child *w)
2169{ 2851{
2170 clear_pending (EV_A_ (W)w); 2852 clear_pending (EV_A_ (W)w);
2171 if (expect_false (!ev_is_active (w))) 2853 if (expect_false (!ev_is_active (w)))
2172 return; 2854 return;
2173 2855
2856 EV_FREQUENT_CHECK;
2857
2174 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2858 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2175 ev_stop (EV_A_ (W)w); 2859 ev_stop (EV_A_ (W)w);
2860
2861 EV_FREQUENT_CHECK;
2176} 2862}
2177 2863
2178#if EV_STAT_ENABLE 2864#if EV_STAT_ENABLE
2179 2865
2180# ifdef _WIN32 2866# ifdef _WIN32
2181# undef lstat 2867# undef lstat
2182# define lstat(a,b) _stati64 (a,b) 2868# define lstat(a,b) _stati64 (a,b)
2183# endif 2869# endif
2184 2870
2185#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 */
2186#define MIN_STAT_INTERVAL 0.1074891 2873#define MIN_STAT_INTERVAL 0.1074891
2187 2874
2188static 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);
2189 2876
2190#if EV_USE_INOTIFY 2877#if EV_USE_INOTIFY
2191# 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)
2192 2881
2193static void noinline 2882static void noinline
2194infy_add (EV_P_ ev_stat *w) 2883infy_add (EV_P_ ev_stat *w)
2195{ 2884{
2196 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);
2197 2886
2198 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 */
2199 { 2907 }
2200 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;
2201 2912
2202 /* monitor some parent directory for speedup hints */ 2913 /* if path is not there, monitor some parent directory for speedup hints */
2203 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2914 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2204 /* but an efficiency issue only */ 2915 /* but an efficiency issue only */
2205 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2916 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2206 { 2917 {
2207 char path [4096]; 2918 char path [4096];
2208 strcpy (path, w->path); 2919 strcpy (path, w->path);
… …
2212 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2923 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2213 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2924 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2214 2925
2215 char *pend = strrchr (path, '/'); 2926 char *pend = strrchr (path, '/');
2216 2927
2217 if (!pend) 2928 if (!pend || pend == path)
2218 break; /* whoops, no '/', complain to your admin */ 2929 break;
2219 2930
2220 *pend = 0; 2931 *pend = 0;
2221 w->wd = inotify_add_watch (fs_fd, path, mask); 2932 w->wd = inotify_add_watch (fs_fd, path, mask);
2222 } 2933 }
2223 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2934 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2224 } 2935 }
2225 } 2936 }
2226 else
2227 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2228 2937
2229 if (w->wd >= 0) 2938 if (w->wd >= 0)
2230 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);
2231} 2945}
2232 2946
2233static void noinline 2947static void noinline
2234infy_del (EV_P_ ev_stat *w) 2948infy_del (EV_P_ ev_stat *w)
2235{ 2949{
… …
2249 2963
2250static void noinline 2964static void noinline
2251infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2965infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2252{ 2966{
2253 if (slot < 0) 2967 if (slot < 0)
2254 /* overflow, need to check for all hahs slots */ 2968 /* overflow, need to check for all hash slots */
2255 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2969 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2256 infy_wd (EV_A_ slot, wd, ev); 2970 infy_wd (EV_A_ slot, wd, ev);
2257 else 2971 else
2258 { 2972 {
2259 WL w_; 2973 WL w_;
… …
2265 2979
2266 if (w->wd == wd || wd == -1) 2980 if (w->wd == wd || wd == -1)
2267 { 2981 {
2268 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2982 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2269 { 2983 {
2984 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2270 w->wd = -1; 2985 w->wd = -1;
2271 infy_add (EV_A_ w); /* re-add, no matter what */ 2986 infy_add (EV_A_ w); /* re-add, no matter what */
2272 } 2987 }
2273 2988
2274 stat_timer_cb (EV_A_ &w->timer, 0); 2989 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2279 2994
2280static void 2995static void
2281infy_cb (EV_P_ ev_io *w, int revents) 2996infy_cb (EV_P_ ev_io *w, int revents)
2282{ 2997{
2283 char buf [EV_INOTIFY_BUFSIZE]; 2998 char buf [EV_INOTIFY_BUFSIZE];
2284 struct inotify_event *ev = (struct inotify_event *)buf;
2285 int ofs; 2999 int ofs;
2286 int len = read (fs_fd, buf, sizeof (buf)); 3000 int len = read (fs_fd, buf, sizeof (buf));
2287 3001
2288 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);
2289 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 }
2290} 3008}
2291 3009
2292void 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
2293infy_init (EV_P) 3066infy_init (EV_P)
2294{ 3067{
2295 if (fs_fd != -2) 3068 if (fs_fd != -2)
2296 return; 3069 return;
2297 3070
3071 fs_fd = -1;
3072
3073 ev_check_2625 (EV_A);
3074
2298 fs_fd = inotify_init (); 3075 fs_fd = infy_newfd ();
2299 3076
2300 if (fs_fd >= 0) 3077 if (fs_fd >= 0)
2301 { 3078 {
3079 fd_intern (fs_fd);
2302 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3080 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2303 ev_set_priority (&fs_w, EV_MAXPRI); 3081 ev_set_priority (&fs_w, EV_MAXPRI);
2304 ev_io_start (EV_A_ &fs_w); 3082 ev_io_start (EV_A_ &fs_w);
3083 ev_unref (EV_A);
2305 } 3084 }
2306} 3085}
2307 3086
2308void inline_size 3087inline_size void
2309infy_fork (EV_P) 3088infy_fork (EV_P)
2310{ 3089{
2311 int slot; 3090 int slot;
2312 3091
2313 if (fs_fd < 0) 3092 if (fs_fd < 0)
2314 return; 3093 return;
2315 3094
3095 ev_ref (EV_A);
3096 ev_io_stop (EV_A_ &fs_w);
2316 close (fs_fd); 3097 close (fs_fd);
2317 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 }
2318 3107
2319 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3108 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2320 { 3109 {
2321 WL w_ = fs_hash [slot].head; 3110 WL w_ = fs_hash [slot].head;
2322 fs_hash [slot].head = 0; 3111 fs_hash [slot].head = 0;
… …
2329 w->wd = -1; 3118 w->wd = -1;
2330 3119
2331 if (fs_fd >= 0) 3120 if (fs_fd >= 0)
2332 infy_add (EV_A_ w); /* re-add, no matter what */ 3121 infy_add (EV_A_ w); /* re-add, no matter what */
2333 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);
2334 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 }
2335 } 3129 }
2336
2337 } 3130 }
2338} 3131}
2339 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)
2340#endif 3139#endif
2341 3140
2342void 3141void
2343ev_stat_stat (EV_P_ ev_stat *w) 3142ev_stat_stat (EV_P_ ev_stat *w)
2344{ 3143{
… …
2351static void noinline 3150static void noinline
2352stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3151stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2353{ 3152{
2354 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3153 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2355 3154
2356 /* we copy this here each the time so that */ 3155 ev_statdata prev = w->attr;
2357 /* prev has the old value when the callback gets invoked */
2358 w->prev = w->attr;
2359 ev_stat_stat (EV_A_ w); 3156 ev_stat_stat (EV_A_ w);
2360 3157
2361 /* 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 */
2362 if ( 3159 if (
2363 w->prev.st_dev != w->attr.st_dev 3160 prev.st_dev != w->attr.st_dev
2364 || w->prev.st_ino != w->attr.st_ino 3161 || prev.st_ino != w->attr.st_ino
2365 || w->prev.st_mode != w->attr.st_mode 3162 || prev.st_mode != w->attr.st_mode
2366 || w->prev.st_nlink != w->attr.st_nlink 3163 || prev.st_nlink != w->attr.st_nlink
2367 || w->prev.st_uid != w->attr.st_uid 3164 || prev.st_uid != w->attr.st_uid
2368 || w->prev.st_gid != w->attr.st_gid 3165 || prev.st_gid != w->attr.st_gid
2369 || w->prev.st_rdev != w->attr.st_rdev 3166 || prev.st_rdev != w->attr.st_rdev
2370 || w->prev.st_size != w->attr.st_size 3167 || prev.st_size != w->attr.st_size
2371 || w->prev.st_atime != w->attr.st_atime 3168 || prev.st_atime != w->attr.st_atime
2372 || w->prev.st_mtime != w->attr.st_mtime 3169 || prev.st_mtime != w->attr.st_mtime
2373 || w->prev.st_ctime != w->attr.st_ctime 3170 || prev.st_ctime != w->attr.st_ctime
2374 ) { 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
2375 #if EV_USE_INOTIFY 3177 #if EV_USE_INOTIFY
3178 if (fs_fd >= 0)
3179 {
2376 infy_del (EV_A_ w); 3180 infy_del (EV_A_ w);
2377 infy_add (EV_A_ w); 3181 infy_add (EV_A_ w);
2378 ev_stat_stat (EV_A_ w); /* avoid race... */ 3182 ev_stat_stat (EV_A_ w); /* avoid race... */
3183 }
2379 #endif 3184 #endif
2380 3185
2381 ev_feed_event (EV_A_ w, EV_STAT); 3186 ev_feed_event (EV_A_ w, EV_STAT);
2382 } 3187 }
2383} 3188}
… …
2386ev_stat_start (EV_P_ ev_stat *w) 3191ev_stat_start (EV_P_ ev_stat *w)
2387{ 3192{
2388 if (expect_false (ev_is_active (w))) 3193 if (expect_false (ev_is_active (w)))
2389 return; 3194 return;
2390 3195
2391 /* since we use memcmp, we need to clear any padding data etc. */
2392 memset (&w->prev, 0, sizeof (ev_statdata));
2393 memset (&w->attr, 0, sizeof (ev_statdata));
2394
2395 ev_stat_stat (EV_A_ w); 3196 ev_stat_stat (EV_A_ w);
2396 3197
3198 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2397 if (w->interval < MIN_STAT_INTERVAL) 3199 w->interval = MIN_STAT_INTERVAL;
2398 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2399 3200
2400 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);
2401 ev_set_priority (&w->timer, ev_priority (w)); 3202 ev_set_priority (&w->timer, ev_priority (w));
2402 3203
2403#if EV_USE_INOTIFY 3204#if EV_USE_INOTIFY
2404 infy_init (EV_A); 3205 infy_init (EV_A);
2405 3206
2406 if (fs_fd >= 0) 3207 if (fs_fd >= 0)
2407 infy_add (EV_A_ w); 3208 infy_add (EV_A_ w);
2408 else 3209 else
2409#endif 3210#endif
3211 {
2410 ev_timer_start (EV_A_ &w->timer); 3212 ev_timer_again (EV_A_ &w->timer);
3213 ev_unref (EV_A);
3214 }
2411 3215
2412 ev_start (EV_A_ (W)w, 1); 3216 ev_start (EV_A_ (W)w, 1);
3217
3218 EV_FREQUENT_CHECK;
2413} 3219}
2414 3220
2415void 3221void
2416ev_stat_stop (EV_P_ ev_stat *w) 3222ev_stat_stop (EV_P_ ev_stat *w)
2417{ 3223{
2418 clear_pending (EV_A_ (W)w); 3224 clear_pending (EV_A_ (W)w);
2419 if (expect_false (!ev_is_active (w))) 3225 if (expect_false (!ev_is_active (w)))
2420 return; 3226 return;
2421 3227
3228 EV_FREQUENT_CHECK;
3229
2422#if EV_USE_INOTIFY 3230#if EV_USE_INOTIFY
2423 infy_del (EV_A_ w); 3231 infy_del (EV_A_ w);
2424#endif 3232#endif
3233
3234 if (ev_is_active (&w->timer))
3235 {
3236 ev_ref (EV_A);
2425 ev_timer_stop (EV_A_ &w->timer); 3237 ev_timer_stop (EV_A_ &w->timer);
3238 }
2426 3239
2427 ev_stop (EV_A_ (W)w); 3240 ev_stop (EV_A_ (W)w);
3241
3242 EV_FREQUENT_CHECK;
2428} 3243}
2429#endif 3244#endif
2430 3245
2431#if EV_IDLE_ENABLE 3246#if EV_IDLE_ENABLE
2432void 3247void
… …
2434{ 3249{
2435 if (expect_false (ev_is_active (w))) 3250 if (expect_false (ev_is_active (w)))
2436 return; 3251 return;
2437 3252
2438 pri_adjust (EV_A_ (W)w); 3253 pri_adjust (EV_A_ (W)w);
3254
3255 EV_FREQUENT_CHECK;
2439 3256
2440 { 3257 {
2441 int active = ++idlecnt [ABSPRI (w)]; 3258 int active = ++idlecnt [ABSPRI (w)];
2442 3259
2443 ++idleall; 3260 ++idleall;
2444 ev_start (EV_A_ (W)w, active); 3261 ev_start (EV_A_ (W)w, active);
2445 3262
2446 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);
2447 idles [ABSPRI (w)][active - 1] = w; 3264 idles [ABSPRI (w)][active - 1] = w;
2448 } 3265 }
3266
3267 EV_FREQUENT_CHECK;
2449} 3268}
2450 3269
2451void 3270void
2452ev_idle_stop (EV_P_ ev_idle *w) 3271ev_idle_stop (EV_P_ ev_idle *w)
2453{ 3272{
2454 clear_pending (EV_A_ (W)w); 3273 clear_pending (EV_A_ (W)w);
2455 if (expect_false (!ev_is_active (w))) 3274 if (expect_false (!ev_is_active (w)))
2456 return; 3275 return;
2457 3276
3277 EV_FREQUENT_CHECK;
3278
2458 { 3279 {
2459 int active = ev_active (w); 3280 int active = ev_active (w);
2460 3281
2461 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3282 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2462 ev_active (idles [ABSPRI (w)][active - 1]) = active; 3283 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2463 3284
2464 ev_stop (EV_A_ (W)w); 3285 ev_stop (EV_A_ (W)w);
2465 --idleall; 3286 --idleall;
2466 } 3287 }
3288
3289 EV_FREQUENT_CHECK;
2467} 3290}
2468#endif 3291#endif
2469 3292
2470void 3293void
2471ev_prepare_start (EV_P_ ev_prepare *w) 3294ev_prepare_start (EV_P_ ev_prepare *w)
2472{ 3295{
2473 if (expect_false (ev_is_active (w))) 3296 if (expect_false (ev_is_active (w)))
2474 return; 3297 return;
3298
3299 EV_FREQUENT_CHECK;
2475 3300
2476 ev_start (EV_A_ (W)w, ++preparecnt); 3301 ev_start (EV_A_ (W)w, ++preparecnt);
2477 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3302 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2478 prepares [preparecnt - 1] = w; 3303 prepares [preparecnt - 1] = w;
3304
3305 EV_FREQUENT_CHECK;
2479} 3306}
2480 3307
2481void 3308void
2482ev_prepare_stop (EV_P_ ev_prepare *w) 3309ev_prepare_stop (EV_P_ ev_prepare *w)
2483{ 3310{
2484 clear_pending (EV_A_ (W)w); 3311 clear_pending (EV_A_ (W)w);
2485 if (expect_false (!ev_is_active (w))) 3312 if (expect_false (!ev_is_active (w)))
2486 return; 3313 return;
2487 3314
3315 EV_FREQUENT_CHECK;
3316
2488 { 3317 {
2489 int active = ev_active (w); 3318 int active = ev_active (w);
2490 3319
2491 prepares [active - 1] = prepares [--preparecnt]; 3320 prepares [active - 1] = prepares [--preparecnt];
2492 ev_active (prepares [active - 1]) = active; 3321 ev_active (prepares [active - 1]) = active;
2493 } 3322 }
2494 3323
2495 ev_stop (EV_A_ (W)w); 3324 ev_stop (EV_A_ (W)w);
3325
3326 EV_FREQUENT_CHECK;
2496} 3327}
2497 3328
2498void 3329void
2499ev_check_start (EV_P_ ev_check *w) 3330ev_check_start (EV_P_ ev_check *w)
2500{ 3331{
2501 if (expect_false (ev_is_active (w))) 3332 if (expect_false (ev_is_active (w)))
2502 return; 3333 return;
3334
3335 EV_FREQUENT_CHECK;
2503 3336
2504 ev_start (EV_A_ (W)w, ++checkcnt); 3337 ev_start (EV_A_ (W)w, ++checkcnt);
2505 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3338 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2506 checks [checkcnt - 1] = w; 3339 checks [checkcnt - 1] = w;
3340
3341 EV_FREQUENT_CHECK;
2507} 3342}
2508 3343
2509void 3344void
2510ev_check_stop (EV_P_ ev_check *w) 3345ev_check_stop (EV_P_ ev_check *w)
2511{ 3346{
2512 clear_pending (EV_A_ (W)w); 3347 clear_pending (EV_A_ (W)w);
2513 if (expect_false (!ev_is_active (w))) 3348 if (expect_false (!ev_is_active (w)))
2514 return; 3349 return;
2515 3350
3351 EV_FREQUENT_CHECK;
3352
2516 { 3353 {
2517 int active = ev_active (w); 3354 int active = ev_active (w);
2518 3355
2519 checks [active - 1] = checks [--checkcnt]; 3356 checks [active - 1] = checks [--checkcnt];
2520 ev_active (checks [active - 1]) = active; 3357 ev_active (checks [active - 1]) = active;
2521 } 3358 }
2522 3359
2523 ev_stop (EV_A_ (W)w); 3360 ev_stop (EV_A_ (W)w);
3361
3362 EV_FREQUENT_CHECK;
2524} 3363}
2525 3364
2526#if EV_EMBED_ENABLE 3365#if EV_EMBED_ENABLE
2527void noinline 3366void noinline
2528ev_embed_sweep (EV_P_ ev_embed *w) 3367ev_embed_sweep (EV_P_ ev_embed *w)
… …
2545embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3384embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2546{ 3385{
2547 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3386 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2548 3387
2549 { 3388 {
2550 struct ev_loop *loop = w->other; 3389 EV_P = w->other;
2551 3390
2552 while (fdchangecnt) 3391 while (fdchangecnt)
2553 { 3392 {
2554 fd_reify (EV_A); 3393 fd_reify (EV_A);
2555 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3394 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2556 } 3395 }
2557 } 3396 }
2558} 3397}
2559 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
2560#if 0 3416#if 0
2561static void 3417static void
2562embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3418embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2563{ 3419{
2564 ev_idle_stop (EV_A_ idle); 3420 ev_idle_stop (EV_A_ idle);
… …
2570{ 3426{
2571 if (expect_false (ev_is_active (w))) 3427 if (expect_false (ev_is_active (w)))
2572 return; 3428 return;
2573 3429
2574 { 3430 {
2575 struct ev_loop *loop = w->other; 3431 EV_P = w->other;
2576 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 ()));
2577 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);
2578 } 3434 }
3435
3436 EV_FREQUENT_CHECK;
2579 3437
2580 ev_set_priority (&w->io, ev_priority (w)); 3438 ev_set_priority (&w->io, ev_priority (w));
2581 ev_io_start (EV_A_ &w->io); 3439 ev_io_start (EV_A_ &w->io);
2582 3440
2583 ev_prepare_init (&w->prepare, embed_prepare_cb); 3441 ev_prepare_init (&w->prepare, embed_prepare_cb);
2584 ev_set_priority (&w->prepare, EV_MINPRI); 3442 ev_set_priority (&w->prepare, EV_MINPRI);
2585 ev_prepare_start (EV_A_ &w->prepare); 3443 ev_prepare_start (EV_A_ &w->prepare);
2586 3444
3445 ev_fork_init (&w->fork, embed_fork_cb);
3446 ev_fork_start (EV_A_ &w->fork);
3447
2587 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3448 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2588 3449
2589 ev_start (EV_A_ (W)w, 1); 3450 ev_start (EV_A_ (W)w, 1);
3451
3452 EV_FREQUENT_CHECK;
2590} 3453}
2591 3454
2592void 3455void
2593ev_embed_stop (EV_P_ ev_embed *w) 3456ev_embed_stop (EV_P_ ev_embed *w)
2594{ 3457{
2595 clear_pending (EV_A_ (W)w); 3458 clear_pending (EV_A_ (W)w);
2596 if (expect_false (!ev_is_active (w))) 3459 if (expect_false (!ev_is_active (w)))
2597 return; 3460 return;
2598 3461
3462 EV_FREQUENT_CHECK;
3463
2599 ev_io_stop (EV_A_ &w->io); 3464 ev_io_stop (EV_A_ &w->io);
2600 ev_prepare_stop (EV_A_ &w->prepare); 3465 ev_prepare_stop (EV_A_ &w->prepare);
3466 ev_fork_stop (EV_A_ &w->fork);
2601 3467
2602 ev_stop (EV_A_ (W)w); 3468 ev_stop (EV_A_ (W)w);
3469
3470 EV_FREQUENT_CHECK;
2603} 3471}
2604#endif 3472#endif
2605 3473
2606#if EV_FORK_ENABLE 3474#if EV_FORK_ENABLE
2607void 3475void
2608ev_fork_start (EV_P_ ev_fork *w) 3476ev_fork_start (EV_P_ ev_fork *w)
2609{ 3477{
2610 if (expect_false (ev_is_active (w))) 3478 if (expect_false (ev_is_active (w)))
2611 return; 3479 return;
3480
3481 EV_FREQUENT_CHECK;
2612 3482
2613 ev_start (EV_A_ (W)w, ++forkcnt); 3483 ev_start (EV_A_ (W)w, ++forkcnt);
2614 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3484 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2615 forks [forkcnt - 1] = w; 3485 forks [forkcnt - 1] = w;
3486
3487 EV_FREQUENT_CHECK;
2616} 3488}
2617 3489
2618void 3490void
2619ev_fork_stop (EV_P_ ev_fork *w) 3491ev_fork_stop (EV_P_ ev_fork *w)
2620{ 3492{
2621 clear_pending (EV_A_ (W)w); 3493 clear_pending (EV_A_ (W)w);
2622 if (expect_false (!ev_is_active (w))) 3494 if (expect_false (!ev_is_active (w)))
2623 return; 3495 return;
2624 3496
3497 EV_FREQUENT_CHECK;
3498
2625 { 3499 {
2626 int active = ev_active (w); 3500 int active = ev_active (w);
2627 3501
2628 forks [active - 1] = forks [--forkcnt]; 3502 forks [active - 1] = forks [--forkcnt];
2629 ev_active (forks [active - 1]) = active; 3503 ev_active (forks [active - 1]) = active;
2630 } 3504 }
2631 3505
2632 ev_stop (EV_A_ (W)w); 3506 ev_stop (EV_A_ (W)w);
3507
3508 EV_FREQUENT_CHECK;
2633} 3509}
2634#endif 3510#endif
2635 3511
2636#if EV_ASYNC_ENABLE 3512#if EV_ASYNC_ENABLE
2637void 3513void
… …
2639{ 3515{
2640 if (expect_false (ev_is_active (w))) 3516 if (expect_false (ev_is_active (w)))
2641 return; 3517 return;
2642 3518
2643 evpipe_init (EV_A); 3519 evpipe_init (EV_A);
3520
3521 EV_FREQUENT_CHECK;
2644 3522
2645 ev_start (EV_A_ (W)w, ++asynccnt); 3523 ev_start (EV_A_ (W)w, ++asynccnt);
2646 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 3524 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2647 asyncs [asynccnt - 1] = w; 3525 asyncs [asynccnt - 1] = w;
3526
3527 EV_FREQUENT_CHECK;
2648} 3528}
2649 3529
2650void 3530void
2651ev_async_stop (EV_P_ ev_async *w) 3531ev_async_stop (EV_P_ ev_async *w)
2652{ 3532{
2653 clear_pending (EV_A_ (W)w); 3533 clear_pending (EV_A_ (W)w);
2654 if (expect_false (!ev_is_active (w))) 3534 if (expect_false (!ev_is_active (w)))
2655 return; 3535 return;
2656 3536
3537 EV_FREQUENT_CHECK;
3538
2657 { 3539 {
2658 int active = ev_active (w); 3540 int active = ev_active (w);
2659 3541
2660 asyncs [active - 1] = asyncs [--asynccnt]; 3542 asyncs [active - 1] = asyncs [--asynccnt];
2661 ev_active (asyncs [active - 1]) = active; 3543 ev_active (asyncs [active - 1]) = active;
2662 } 3544 }
2663 3545
2664 ev_stop (EV_A_ (W)w); 3546 ev_stop (EV_A_ (W)w);
3547
3548 EV_FREQUENT_CHECK;
2665} 3549}
2666 3550
2667void 3551void
2668ev_async_send (EV_P_ ev_async *w) 3552ev_async_send (EV_P_ ev_async *w)
2669{ 3553{
2670 w->sent = 1; 3554 w->sent = 1;
2671 evpipe_write (EV_A_ &gotasync); 3555 evpipe_write (EV_A_ &async_pending);
2672} 3556}
2673#endif 3557#endif
2674 3558
2675/*****************************************************************************/ 3559/*****************************************************************************/
2676 3560
… …
2686once_cb (EV_P_ struct ev_once *once, int revents) 3570once_cb (EV_P_ struct ev_once *once, int revents)
2687{ 3571{
2688 void (*cb)(int revents, void *arg) = once->cb; 3572 void (*cb)(int revents, void *arg) = once->cb;
2689 void *arg = once->arg; 3573 void *arg = once->arg;
2690 3574
2691 ev_io_stop (EV_A_ &once->io); 3575 ev_io_stop (EV_A_ &once->io);
2692 ev_timer_stop (EV_A_ &once->to); 3576 ev_timer_stop (EV_A_ &once->to);
2693 ev_free (once); 3577 ev_free (once);
2694 3578
2695 cb (revents, arg); 3579 cb (revents, arg);
2696} 3580}
2697 3581
2698static void 3582static void
2699once_cb_io (EV_P_ ev_io *w, int revents) 3583once_cb_io (EV_P_ ev_io *w, int revents)
2700{ 3584{
2701 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));
2702} 3588}
2703 3589
2704static void 3590static void
2705once_cb_to (EV_P_ ev_timer *w, int revents) 3591once_cb_to (EV_P_ ev_timer *w, int revents)
2706{ 3592{
2707 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));
2708} 3596}
2709 3597
2710void 3598void
2711ev_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)
2712{ 3600{
… …
2734 ev_timer_set (&once->to, timeout, 0.); 3622 ev_timer_set (&once->to, timeout, 0.);
2735 ev_timer_start (EV_A_ &once->to); 3623 ev_timer_start (EV_A_ &once->to);
2736 } 3624 }
2737} 3625}
2738 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
2739#if EV_MULTIPLICITY 3735#if EV_MULTIPLICITY
2740 #include "ev_wrap.h" 3736 #include "ev_wrap.h"
2741#endif 3737#endif
2742 3738
2743#ifdef __cplusplus 3739#ifdef __cplusplus

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