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Comparing libev/ev.c (file contents):
Revision 1.254 by root, Wed Jun 4 20:26:55 2008 UTC vs.
Revision 1.332 by root, Tue Mar 9 08:58:17 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
… …
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
189# undef EV_AVOID_STDIO
164#endif 190#endif
165 191
166/* this block tries to deduce configuration from header-defined symbols and defaults */ 192/* this block tries to deduce configuration from header-defined symbols and defaults */
193
194/* try to deduce the maximum number of signals on this platform */
195#if defined (EV_NSIG)
196/* use what's provided */
197#elif defined (NSIG)
198# define EV_NSIG (NSIG)
199#elif defined(_NSIG)
200# define EV_NSIG (_NSIG)
201#elif defined (SIGMAX)
202# define EV_NSIG (SIGMAX+1)
203#elif defined (SIG_MAX)
204# define EV_NSIG (SIG_MAX+1)
205#elif defined (_SIG_MAX)
206# define EV_NSIG (_SIG_MAX+1)
207#elif defined (MAXSIG)
208# define EV_NSIG (MAXSIG+1)
209#elif defined (MAX_SIG)
210# define EV_NSIG (MAX_SIG+1)
211#elif defined (SIGARRAYSIZE)
212# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
213#elif defined (_sys_nsig)
214# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
215#else
216# error "unable to find value for NSIG, please report"
217/* to make it compile regardless, just remove the above line */
218# define EV_NSIG 65
219#endif
220
221#ifndef EV_USE_CLOCK_SYSCALL
222# if __linux && __GLIBC__ >= 2
223# define EV_USE_CLOCK_SYSCALL 1
224# else
225# define EV_USE_CLOCK_SYSCALL 0
226# endif
227#endif
167 228
168#ifndef EV_USE_MONOTONIC 229#ifndef EV_USE_MONOTONIC
169# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 230# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
170# define EV_USE_MONOTONIC 1 231# define EV_USE_MONOTONIC 1
171# else 232# else
172# define EV_USE_MONOTONIC 0 233# define EV_USE_MONOTONIC 0
173# endif 234# endif
174#endif 235#endif
175 236
176#ifndef EV_USE_REALTIME 237#ifndef EV_USE_REALTIME
177# define EV_USE_REALTIME 0 238# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
178#endif 239#endif
179 240
180#ifndef EV_USE_NANOSLEEP 241#ifndef EV_USE_NANOSLEEP
181# if _POSIX_C_SOURCE >= 199309L 242# if _POSIX_C_SOURCE >= 199309L
182# define EV_USE_NANOSLEEP 1 243# define EV_USE_NANOSLEEP 1
… …
243# else 304# else
244# define EV_USE_EVENTFD 0 305# define EV_USE_EVENTFD 0
245# endif 306# endif
246#endif 307#endif
247 308
309#ifndef EV_USE_SIGNALFD
310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
311# define EV_USE_SIGNALFD 1
312# else
313# define EV_USE_SIGNALFD 0
314# endif
315#endif
316
248#if 0 /* debugging */ 317#if 0 /* debugging */
249# define EV_VERIFY 3 318# define EV_VERIFY 3
250# define EV_USE_4HEAP 1 319# define EV_USE_4HEAP 1
251# define EV_HEAP_CACHE_AT 1 320# define EV_HEAP_CACHE_AT 1
252#endif 321#endif
… …
261 330
262#ifndef EV_HEAP_CACHE_AT 331#ifndef EV_HEAP_CACHE_AT
263# define EV_HEAP_CACHE_AT !EV_MINIMAL 332# define EV_HEAP_CACHE_AT !EV_MINIMAL
264#endif 333#endif
265 334
335/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
336/* which makes programs even slower. might work on other unices, too. */
337#if EV_USE_CLOCK_SYSCALL
338# include <syscall.h>
339# ifdef SYS_clock_gettime
340# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
341# undef EV_USE_MONOTONIC
342# define EV_USE_MONOTONIC 1
343# else
344# undef EV_USE_CLOCK_SYSCALL
345# define EV_USE_CLOCK_SYSCALL 0
346# endif
347#endif
348
266/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 349/* this block fixes any misconfiguration where we know we run into trouble otherwise */
350
351#ifdef _AIX
352/* AIX has a completely broken poll.h header */
353# undef EV_USE_POLL
354# define EV_USE_POLL 0
355#endif
267 356
268#ifndef CLOCK_MONOTONIC 357#ifndef CLOCK_MONOTONIC
269# undef EV_USE_MONOTONIC 358# undef EV_USE_MONOTONIC
270# define EV_USE_MONOTONIC 0 359# define EV_USE_MONOTONIC 0
271#endif 360#endif
… …
285# include <sys/select.h> 374# include <sys/select.h>
286# endif 375# endif
287#endif 376#endif
288 377
289#if EV_USE_INOTIFY 378#if EV_USE_INOTIFY
379# include <sys/utsname.h>
380# include <sys/statfs.h>
290# include <sys/inotify.h> 381# include <sys/inotify.h>
382/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
383# ifndef IN_DONT_FOLLOW
384# undef EV_USE_INOTIFY
385# define EV_USE_INOTIFY 0
386# endif
291#endif 387#endif
292 388
293#if EV_SELECT_IS_WINSOCKET 389#if EV_SELECT_IS_WINSOCKET
294# include <winsock.h> 390# include <winsock.h>
295#endif 391#endif
296 392
297#if EV_USE_EVENTFD 393#if EV_USE_EVENTFD
298/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 394/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
299# include <stdint.h> 395# include <stdint.h>
396# ifndef EFD_NONBLOCK
397# define EFD_NONBLOCK O_NONBLOCK
398# endif
399# ifndef EFD_CLOEXEC
400# ifdef O_CLOEXEC
401# define EFD_CLOEXEC O_CLOEXEC
402# else
403# define EFD_CLOEXEC 02000000
404# endif
405# endif
300# ifdef __cplusplus 406# ifdef __cplusplus
301extern "C" { 407extern "C" {
302# endif 408# endif
303int eventfd (unsigned int initval, int flags); 409int (eventfd) (unsigned int initval, int flags);
304# ifdef __cplusplus 410# ifdef __cplusplus
305} 411}
306# endif 412# endif
307#endif 413#endif
414
415#if EV_USE_SIGNALFD
416/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
417# include <stdint.h>
418# ifndef SFD_NONBLOCK
419# define SFD_NONBLOCK O_NONBLOCK
420# endif
421# ifndef SFD_CLOEXEC
422# ifdef O_CLOEXEC
423# define SFD_CLOEXEC O_CLOEXEC
424# else
425# define SFD_CLOEXEC 02000000
426# endif
427# endif
428# ifdef __cplusplus
429extern "C" {
430# endif
431int signalfd (int fd, const sigset_t *mask, int flags);
432
433struct signalfd_siginfo
434{
435 uint32_t ssi_signo;
436 char pad[128 - sizeof (uint32_t)];
437};
438# ifdef __cplusplus
439}
440# endif
441#endif
442
308 443
309/**/ 444/**/
310 445
311#if EV_VERIFY >= 3 446#if EV_VERIFY >= 3
312# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 447# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
… …
324 */ 459 */
325#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 460#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
326 461
327#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 462#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
328#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 463#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
329/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
330 464
331#if __GNUC__ >= 4 465#if __GNUC__ >= 4
332# define expect(expr,value) __builtin_expect ((expr),(value)) 466# define expect(expr,value) __builtin_expect ((expr),(value))
333# define noinline __attribute__ ((noinline)) 467# define noinline __attribute__ ((noinline))
334#else 468#else
… …
347# define inline_speed static noinline 481# define inline_speed static noinline
348#else 482#else
349# define inline_speed static inline 483# define inline_speed static inline
350#endif 484#endif
351 485
352#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 486#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
487
488#if EV_MINPRI == EV_MAXPRI
489# define ABSPRI(w) (((W)w), 0)
490#else
353#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 491# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
492#endif
354 493
355#define EMPTY /* required for microsofts broken pseudo-c compiler */ 494#define EMPTY /* required for microsofts broken pseudo-c compiler */
356#define EMPTY2(a,b) /* used to suppress some warnings */ 495#define EMPTY2(a,b) /* used to suppress some warnings */
357 496
358typedef ev_watcher *W; 497typedef ev_watcher *W;
… …
360typedef ev_watcher_time *WT; 499typedef ev_watcher_time *WT;
361 500
362#define ev_active(w) ((W)(w))->active 501#define ev_active(w) ((W)(w))->active
363#define ev_at(w) ((WT)(w))->at 502#define ev_at(w) ((WT)(w))->at
364 503
365#if EV_USE_MONOTONIC 504#if EV_USE_REALTIME
366/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 505/* sig_atomic_t is used to avoid per-thread variables or locking but still */
367/* giving it a reasonably high chance of working on typical architetcures */ 506/* giving it a reasonably high chance of working on typical architetcures */
507static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
508#endif
509
510#if EV_USE_MONOTONIC
368static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 511static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
512#endif
513
514#ifndef EV_FD_TO_WIN32_HANDLE
515# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
516#endif
517#ifndef EV_WIN32_HANDLE_TO_FD
518# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
519#endif
520#ifndef EV_WIN32_CLOSE_FD
521# define EV_WIN32_CLOSE_FD(fd) close (fd)
369#endif 522#endif
370 523
371#ifdef _WIN32 524#ifdef _WIN32
372# include "ev_win32.c" 525# include "ev_win32.c"
373#endif 526#endif
374 527
375/*****************************************************************************/ 528/*****************************************************************************/
376 529
530#if EV_AVOID_STDIO
531static void noinline
532ev_printerr (const char *msg)
533{
534 write (STDERR_FILENO, msg, strlen (msg));
535}
536#endif
537
377static void (*syserr_cb)(const char *msg); 538static void (*syserr_cb)(const char *msg);
378 539
379void 540void
380ev_set_syserr_cb (void (*cb)(const char *msg)) 541ev_set_syserr_cb (void (*cb)(const char *msg))
381{ 542{
382 syserr_cb = cb; 543 syserr_cb = cb;
383} 544}
384 545
385static void noinline 546static void noinline
386syserr (const char *msg) 547ev_syserr (const char *msg)
387{ 548{
388 if (!msg) 549 if (!msg)
389 msg = "(libev) system error"; 550 msg = "(libev) system error";
390 551
391 if (syserr_cb) 552 if (syserr_cb)
392 syserr_cb (msg); 553 syserr_cb (msg);
393 else 554 else
394 { 555 {
556#if EV_AVOID_STDIO
557 const char *err = strerror (errno);
558
559 ev_printerr (msg);
560 ev_printerr (": ");
561 ev_printerr (err);
562 ev_printerr ("\n");
563#else
395 perror (msg); 564 perror (msg);
565#endif
396 abort (); 566 abort ();
397 } 567 }
398} 568}
399 569
400static void * 570static void *
… …
402{ 572{
403 /* some systems, notably openbsd and darwin, fail to properly 573 /* some systems, notably openbsd and darwin, fail to properly
404 * implement realloc (x, 0) (as required by both ansi c-98 and 574 * implement realloc (x, 0) (as required by both ansi c-98 and
405 * the single unix specification, so work around them here. 575 * the single unix specification, so work around them here.
406 */ 576 */
407
408 if (size) 577 if (size)
409 return realloc (ptr, size); 578 return realloc (ptr, size);
410 579
411 free (ptr); 580 free (ptr);
412 return 0; 581 return 0;
… …
425{ 594{
426 ptr = alloc (ptr, size); 595 ptr = alloc (ptr, size);
427 596
428 if (!ptr && size) 597 if (!ptr && size)
429 { 598 {
599#if EV_AVOID_STDIO
600 ev_printerr ("libev: memory allocation failed, aborting.\n");
601#else
430 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 602 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
603#endif
431 abort (); 604 abort ();
432 } 605 }
433 606
434 return ptr; 607 return ptr;
435} 608}
… …
437#define ev_malloc(size) ev_realloc (0, (size)) 610#define ev_malloc(size) ev_realloc (0, (size))
438#define ev_free(ptr) ev_realloc ((ptr), 0) 611#define ev_free(ptr) ev_realloc ((ptr), 0)
439 612
440/*****************************************************************************/ 613/*****************************************************************************/
441 614
615/* set in reify when reification needed */
616#define EV_ANFD_REIFY 1
617
618/* file descriptor info structure */
442typedef struct 619typedef struct
443{ 620{
444 WL head; 621 WL head;
445 unsigned char events; 622 unsigned char events; /* the events watched for */
623 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
624 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
446 unsigned char reify; 625 unsigned char unused;
626#if EV_USE_EPOLL
627 unsigned int egen; /* generation counter to counter epoll bugs */
628#endif
447#if EV_SELECT_IS_WINSOCKET 629#if EV_SELECT_IS_WINSOCKET
448 SOCKET handle; 630 SOCKET handle;
449#endif 631#endif
450} ANFD; 632} ANFD;
451 633
634/* stores the pending event set for a given watcher */
452typedef struct 635typedef struct
453{ 636{
454 W w; 637 W w;
455 int events; 638 int events; /* the pending event set for the given watcher */
456} ANPENDING; 639} ANPENDING;
457 640
458#if EV_USE_INOTIFY 641#if EV_USE_INOTIFY
459/* hash table entry per inotify-id */ 642/* hash table entry per inotify-id */
460typedef struct 643typedef struct
… …
463} ANFS; 646} ANFS;
464#endif 647#endif
465 648
466/* Heap Entry */ 649/* Heap Entry */
467#if EV_HEAP_CACHE_AT 650#if EV_HEAP_CACHE_AT
651 /* a heap element */
468 typedef struct { 652 typedef struct {
469 ev_tstamp at; 653 ev_tstamp at;
470 WT w; 654 WT w;
471 } ANHE; 655 } ANHE;
472 656
473 #define ANHE_w(he) (he).w /* access watcher, read-write */ 657 #define ANHE_w(he) (he).w /* access watcher, read-write */
474 #define ANHE_at(he) (he).at /* access cached at, read-only */ 658 #define ANHE_at(he) (he).at /* access cached at, read-only */
475 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 659 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
476#else 660#else
661 /* a heap element */
477 typedef WT ANHE; 662 typedef WT ANHE;
478 663
479 #define ANHE_w(he) (he) 664 #define ANHE_w(he) (he)
480 #define ANHE_at(he) (he)->at 665 #define ANHE_at(he) (he)->at
481 #define ANHE_at_cache(he) 666 #define ANHE_at_cache(he)
… …
505 690
506 static int ev_default_loop_ptr; 691 static int ev_default_loop_ptr;
507 692
508#endif 693#endif
509 694
695#if EV_MINIMAL < 2
696# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
697# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
698# define EV_INVOKE_PENDING invoke_cb (EV_A)
699#else
700# define EV_RELEASE_CB (void)0
701# define EV_ACQUIRE_CB (void)0
702# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
703#endif
704
705#define EVUNLOOP_RECURSE 0x80
706
510/*****************************************************************************/ 707/*****************************************************************************/
511 708
709#ifndef EV_HAVE_EV_TIME
512ev_tstamp 710ev_tstamp
513ev_time (void) 711ev_time (void)
514{ 712{
515#if EV_USE_REALTIME 713#if EV_USE_REALTIME
714 if (expect_true (have_realtime))
715 {
516 struct timespec ts; 716 struct timespec ts;
517 clock_gettime (CLOCK_REALTIME, &ts); 717 clock_gettime (CLOCK_REALTIME, &ts);
518 return ts.tv_sec + ts.tv_nsec * 1e-9; 718 return ts.tv_sec + ts.tv_nsec * 1e-9;
519#else 719 }
720#endif
721
520 struct timeval tv; 722 struct timeval tv;
521 gettimeofday (&tv, 0); 723 gettimeofday (&tv, 0);
522 return tv.tv_sec + tv.tv_usec * 1e-6; 724 return tv.tv_sec + tv.tv_usec * 1e-6;
523#endif
524} 725}
726#endif
525 727
526ev_tstamp inline_size 728inline_size ev_tstamp
527get_clock (void) 729get_clock (void)
528{ 730{
529#if EV_USE_MONOTONIC 731#if EV_USE_MONOTONIC
530 if (expect_true (have_monotonic)) 732 if (expect_true (have_monotonic))
531 { 733 {
… …
564 struct timeval tv; 766 struct timeval tv;
565 767
566 tv.tv_sec = (time_t)delay; 768 tv.tv_sec = (time_t)delay;
567 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 769 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
568 770
771 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
772 /* something not guaranteed by newer posix versions, but guaranteed */
773 /* by older ones */
569 select (0, 0, 0, 0, &tv); 774 select (0, 0, 0, 0, &tv);
570#endif 775#endif
571 } 776 }
572} 777}
573 778
574/*****************************************************************************/ 779/*****************************************************************************/
575 780
576#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 781#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
577 782
578int inline_size 783/* find a suitable new size for the given array, */
784/* hopefully by rounding to a ncie-to-malloc size */
785inline_size int
579array_nextsize (int elem, int cur, int cnt) 786array_nextsize (int elem, int cur, int cnt)
580{ 787{
581 int ncur = cur + 1; 788 int ncur = cur + 1;
582 789
583 do 790 do
… …
600array_realloc (int elem, void *base, int *cur, int cnt) 807array_realloc (int elem, void *base, int *cur, int cnt)
601{ 808{
602 *cur = array_nextsize (elem, *cur, cnt); 809 *cur = array_nextsize (elem, *cur, cnt);
603 return ev_realloc (base, elem * *cur); 810 return ev_realloc (base, elem * *cur);
604} 811}
812
813#define array_init_zero(base,count) \
814 memset ((void *)(base), 0, sizeof (*(base)) * (count))
605 815
606#define array_needsize(type,base,cur,cnt,init) \ 816#define array_needsize(type,base,cur,cnt,init) \
607 if (expect_false ((cnt) > (cur))) \ 817 if (expect_false ((cnt) > (cur))) \
608 { \ 818 { \
609 int ocur_ = (cur); \ 819 int ocur_ = (cur); \
… …
621 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 831 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
622 } 832 }
623#endif 833#endif
624 834
625#define array_free(stem, idx) \ 835#define array_free(stem, idx) \
626 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 836 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
627 837
628/*****************************************************************************/ 838/*****************************************************************************/
839
840/* dummy callback for pending events */
841static void noinline
842pendingcb (EV_P_ ev_prepare *w, int revents)
843{
844}
629 845
630void noinline 846void noinline
631ev_feed_event (EV_P_ void *w, int revents) 847ev_feed_event (EV_P_ void *w, int revents)
632{ 848{
633 W w_ = (W)w; 849 W w_ = (W)w;
… …
642 pendings [pri][w_->pending - 1].w = w_; 858 pendings [pri][w_->pending - 1].w = w_;
643 pendings [pri][w_->pending - 1].events = revents; 859 pendings [pri][w_->pending - 1].events = revents;
644 } 860 }
645} 861}
646 862
647void inline_speed 863inline_speed void
864feed_reverse (EV_P_ W w)
865{
866 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
867 rfeeds [rfeedcnt++] = w;
868}
869
870inline_size void
871feed_reverse_done (EV_P_ int revents)
872{
873 do
874 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
875 while (rfeedcnt);
876}
877
878inline_speed void
648queue_events (EV_P_ W *events, int eventcnt, int type) 879queue_events (EV_P_ W *events, int eventcnt, int type)
649{ 880{
650 int i; 881 int i;
651 882
652 for (i = 0; i < eventcnt; ++i) 883 for (i = 0; i < eventcnt; ++i)
653 ev_feed_event (EV_A_ events [i], type); 884 ev_feed_event (EV_A_ events [i], type);
654} 885}
655 886
656/*****************************************************************************/ 887/*****************************************************************************/
657 888
658void inline_size 889inline_speed void
659anfds_init (ANFD *base, int count)
660{
661 while (count--)
662 {
663 base->head = 0;
664 base->events = EV_NONE;
665 base->reify = 0;
666
667 ++base;
668 }
669}
670
671void inline_speed
672fd_event (EV_P_ int fd, int revents) 890fd_event_nc (EV_P_ int fd, int revents)
673{ 891{
674 ANFD *anfd = anfds + fd; 892 ANFD *anfd = anfds + fd;
675 ev_io *w; 893 ev_io *w;
676 894
677 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 895 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
681 if (ev) 899 if (ev)
682 ev_feed_event (EV_A_ (W)w, ev); 900 ev_feed_event (EV_A_ (W)w, ev);
683 } 901 }
684} 902}
685 903
904/* do not submit kernel events for fds that have reify set */
905/* because that means they changed while we were polling for new events */
906inline_speed void
907fd_event (EV_P_ int fd, int revents)
908{
909 ANFD *anfd = anfds + fd;
910
911 if (expect_true (!anfd->reify))
912 fd_event_nc (EV_A_ fd, revents);
913}
914
686void 915void
687ev_feed_fd_event (EV_P_ int fd, int revents) 916ev_feed_fd_event (EV_P_ int fd, int revents)
688{ 917{
689 if (fd >= 0 && fd < anfdmax) 918 if (fd >= 0 && fd < anfdmax)
690 fd_event (EV_A_ fd, revents); 919 fd_event_nc (EV_A_ fd, revents);
691} 920}
692 921
693void inline_size 922/* make sure the external fd watch events are in-sync */
923/* with the kernel/libev internal state */
924inline_size void
694fd_reify (EV_P) 925fd_reify (EV_P)
695{ 926{
696 int i; 927 int i;
697 928
698 for (i = 0; i < fdchangecnt; ++i) 929 for (i = 0; i < fdchangecnt; ++i)
… …
708 939
709#if EV_SELECT_IS_WINSOCKET 940#if EV_SELECT_IS_WINSOCKET
710 if (events) 941 if (events)
711 { 942 {
712 unsigned long arg; 943 unsigned long arg;
713 #ifdef EV_FD_TO_WIN32_HANDLE
714 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 944 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
715 #else
716 anfd->handle = _get_osfhandle (fd);
717 #endif
718 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 945 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
719 } 946 }
720#endif 947#endif
721 948
722 { 949 {
723 unsigned char o_events = anfd->events; 950 unsigned char o_events = anfd->events;
724 unsigned char o_reify = anfd->reify; 951 unsigned char o_reify = anfd->reify;
725 952
726 anfd->reify = 0; 953 anfd->reify = 0;
727 anfd->events = events; 954 anfd->events = events;
728 955
729 if (o_events != events || o_reify & EV_IOFDSET) 956 if (o_events != events || o_reify & EV__IOFDSET)
730 backend_modify (EV_A_ fd, o_events, events); 957 backend_modify (EV_A_ fd, o_events, events);
731 } 958 }
732 } 959 }
733 960
734 fdchangecnt = 0; 961 fdchangecnt = 0;
735} 962}
736 963
737void inline_size 964/* something about the given fd changed */
965inline_size void
738fd_change (EV_P_ int fd, int flags) 966fd_change (EV_P_ int fd, int flags)
739{ 967{
740 unsigned char reify = anfds [fd].reify; 968 unsigned char reify = anfds [fd].reify;
741 anfds [fd].reify |= flags; 969 anfds [fd].reify |= flags;
742 970
… …
746 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 974 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
747 fdchanges [fdchangecnt - 1] = fd; 975 fdchanges [fdchangecnt - 1] = fd;
748 } 976 }
749} 977}
750 978
751void inline_speed 979/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
980inline_speed void
752fd_kill (EV_P_ int fd) 981fd_kill (EV_P_ int fd)
753{ 982{
754 ev_io *w; 983 ev_io *w;
755 984
756 while ((w = (ev_io *)anfds [fd].head)) 985 while ((w = (ev_io *)anfds [fd].head))
… …
758 ev_io_stop (EV_A_ w); 987 ev_io_stop (EV_A_ w);
759 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 988 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
760 } 989 }
761} 990}
762 991
763int inline_size 992/* check whether the given fd is atcually valid, for error recovery */
993inline_size int
764fd_valid (int fd) 994fd_valid (int fd)
765{ 995{
766#ifdef _WIN32 996#ifdef _WIN32
767 return _get_osfhandle (fd) != -1; 997 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
768#else 998#else
769 return fcntl (fd, F_GETFD) != -1; 999 return fcntl (fd, F_GETFD) != -1;
770#endif 1000#endif
771} 1001}
772 1002
… …
790 1020
791 for (fd = anfdmax; fd--; ) 1021 for (fd = anfdmax; fd--; )
792 if (anfds [fd].events) 1022 if (anfds [fd].events)
793 { 1023 {
794 fd_kill (EV_A_ fd); 1024 fd_kill (EV_A_ fd);
795 return; 1025 break;
796 } 1026 }
797} 1027}
798 1028
799/* usually called after fork if backend needs to re-arm all fds from scratch */ 1029/* usually called after fork if backend needs to re-arm all fds from scratch */
800static void noinline 1030static void noinline
… …
804 1034
805 for (fd = 0; fd < anfdmax; ++fd) 1035 for (fd = 0; fd < anfdmax; ++fd)
806 if (anfds [fd].events) 1036 if (anfds [fd].events)
807 { 1037 {
808 anfds [fd].events = 0; 1038 anfds [fd].events = 0;
1039 anfds [fd].emask = 0;
809 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1040 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
810 } 1041 }
811} 1042}
812 1043
813/*****************************************************************************/ 1044/*****************************************************************************/
814 1045
… …
830#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1061#define HEAP0 (DHEAP - 1) /* index of first element in heap */
831#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1062#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
832#define UPHEAP_DONE(p,k) ((p) == (k)) 1063#define UPHEAP_DONE(p,k) ((p) == (k))
833 1064
834/* away from the root */ 1065/* away from the root */
835void inline_speed 1066inline_speed void
836downheap (ANHE *heap, int N, int k) 1067downheap (ANHE *heap, int N, int k)
837{ 1068{
838 ANHE he = heap [k]; 1069 ANHE he = heap [k];
839 ANHE *E = heap + N + HEAP0; 1070 ANHE *E = heap + N + HEAP0;
840 1071
… …
880#define HEAP0 1 1111#define HEAP0 1
881#define HPARENT(k) ((k) >> 1) 1112#define HPARENT(k) ((k) >> 1)
882#define UPHEAP_DONE(p,k) (!(p)) 1113#define UPHEAP_DONE(p,k) (!(p))
883 1114
884/* away from the root */ 1115/* away from the root */
885void inline_speed 1116inline_speed void
886downheap (ANHE *heap, int N, int k) 1117downheap (ANHE *heap, int N, int k)
887{ 1118{
888 ANHE he = heap [k]; 1119 ANHE he = heap [k];
889 1120
890 for (;;) 1121 for (;;)
891 { 1122 {
892 int c = k << 1; 1123 int c = k << 1;
893 1124
894 if (c > N + HEAP0 - 1) 1125 if (c >= N + HEAP0)
895 break; 1126 break;
896 1127
897 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1128 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
898 ? 1 : 0; 1129 ? 1 : 0;
899 1130
… …
910 ev_active (ANHE_w (he)) = k; 1141 ev_active (ANHE_w (he)) = k;
911} 1142}
912#endif 1143#endif
913 1144
914/* towards the root */ 1145/* towards the root */
915void inline_speed 1146inline_speed void
916upheap (ANHE *heap, int k) 1147upheap (ANHE *heap, int k)
917{ 1148{
918 ANHE he = heap [k]; 1149 ANHE he = heap [k];
919 1150
920 for (;;) 1151 for (;;)
… …
931 1162
932 heap [k] = he; 1163 heap [k] = he;
933 ev_active (ANHE_w (he)) = k; 1164 ev_active (ANHE_w (he)) = k;
934} 1165}
935 1166
936void inline_size 1167/* move an element suitably so it is in a correct place */
1168inline_size void
937adjustheap (ANHE *heap, int N, int k) 1169adjustheap (ANHE *heap, int N, int k)
938{ 1170{
939 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1171 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
940 upheap (heap, k); 1172 upheap (heap, k);
941 else 1173 else
942 downheap (heap, N, k); 1174 downheap (heap, N, k);
943} 1175}
944 1176
945/* rebuild the heap: this function is used only once and executed rarely */ 1177/* rebuild the heap: this function is used only once and executed rarely */
946void inline_size 1178inline_size void
947reheap (ANHE *heap, int N) 1179reheap (ANHE *heap, int N)
948{ 1180{
949 int i; 1181 int i;
950 1182
951 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1183 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
954 upheap (heap, i + HEAP0); 1186 upheap (heap, i + HEAP0);
955} 1187}
956 1188
957/*****************************************************************************/ 1189/*****************************************************************************/
958 1190
1191/* associate signal watchers to a signal signal */
959typedef struct 1192typedef struct
960{ 1193{
1194 EV_ATOMIC_T pending;
1195#if EV_MULTIPLICITY
1196 EV_P;
1197#endif
961 WL head; 1198 WL head;
962 EV_ATOMIC_T gotsig;
963} ANSIG; 1199} ANSIG;
964 1200
965static ANSIG *signals; 1201static ANSIG signals [EV_NSIG - 1];
966static int signalmax;
967
968static EV_ATOMIC_T gotsig;
969
970void inline_size
971signals_init (ANSIG *base, int count)
972{
973 while (count--)
974 {
975 base->head = 0;
976 base->gotsig = 0;
977
978 ++base;
979 }
980}
981 1202
982/*****************************************************************************/ 1203/*****************************************************************************/
983 1204
984void inline_speed 1205/* used to prepare libev internal fd's */
1206/* this is not fork-safe */
1207inline_speed void
985fd_intern (int fd) 1208fd_intern (int fd)
986{ 1209{
987#ifdef _WIN32 1210#ifdef _WIN32
988 unsigned long arg = 1; 1211 unsigned long arg = 1;
989 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1212 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
990#else 1213#else
991 fcntl (fd, F_SETFD, FD_CLOEXEC); 1214 fcntl (fd, F_SETFD, FD_CLOEXEC);
992 fcntl (fd, F_SETFL, O_NONBLOCK); 1215 fcntl (fd, F_SETFL, O_NONBLOCK);
993#endif 1216#endif
994} 1217}
995 1218
996static void noinline 1219static void noinline
997evpipe_init (EV_P) 1220evpipe_init (EV_P)
998{ 1221{
999 if (!ev_is_active (&pipeev)) 1222 if (!ev_is_active (&pipe_w))
1000 { 1223 {
1001#if EV_USE_EVENTFD 1224#if EV_USE_EVENTFD
1225 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1226 if (evfd < 0 && errno == EINVAL)
1002 if ((evfd = eventfd (0, 0)) >= 0) 1227 evfd = eventfd (0, 0);
1228
1229 if (evfd >= 0)
1003 { 1230 {
1004 evpipe [0] = -1; 1231 evpipe [0] = -1;
1005 fd_intern (evfd); 1232 fd_intern (evfd); /* doing it twice doesn't hurt */
1006 ev_io_set (&pipeev, evfd, EV_READ); 1233 ev_io_set (&pipe_w, evfd, EV_READ);
1007 } 1234 }
1008 else 1235 else
1009#endif 1236#endif
1010 { 1237 {
1011 while (pipe (evpipe)) 1238 while (pipe (evpipe))
1012 syserr ("(libev) error creating signal/async pipe"); 1239 ev_syserr ("(libev) error creating signal/async pipe");
1013 1240
1014 fd_intern (evpipe [0]); 1241 fd_intern (evpipe [0]);
1015 fd_intern (evpipe [1]); 1242 fd_intern (evpipe [1]);
1016 ev_io_set (&pipeev, evpipe [0], EV_READ); 1243 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1017 } 1244 }
1018 1245
1019 ev_io_start (EV_A_ &pipeev); 1246 ev_io_start (EV_A_ &pipe_w);
1020 ev_unref (EV_A); /* watcher should not keep loop alive */ 1247 ev_unref (EV_A); /* watcher should not keep loop alive */
1021 } 1248 }
1022} 1249}
1023 1250
1024void inline_size 1251inline_size void
1025evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1252evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1026{ 1253{
1027 if (!*flag) 1254 if (!*flag)
1028 { 1255 {
1029 int old_errno = errno; /* save errno because write might clobber it */ 1256 int old_errno = errno; /* save errno because write might clobber it */
… …
1042 1269
1043 errno = old_errno; 1270 errno = old_errno;
1044 } 1271 }
1045} 1272}
1046 1273
1274/* called whenever the libev signal pipe */
1275/* got some events (signal, async) */
1047static void 1276static void
1048pipecb (EV_P_ ev_io *iow, int revents) 1277pipecb (EV_P_ ev_io *iow, int revents)
1049{ 1278{
1279 int i;
1280
1050#if EV_USE_EVENTFD 1281#if EV_USE_EVENTFD
1051 if (evfd >= 0) 1282 if (evfd >= 0)
1052 { 1283 {
1053 uint64_t counter; 1284 uint64_t counter;
1054 read (evfd, &counter, sizeof (uint64_t)); 1285 read (evfd, &counter, sizeof (uint64_t));
… …
1058 { 1289 {
1059 char dummy; 1290 char dummy;
1060 read (evpipe [0], &dummy, 1); 1291 read (evpipe [0], &dummy, 1);
1061 } 1292 }
1062 1293
1063 if (gotsig && ev_is_default_loop (EV_A)) 1294 if (sig_pending)
1064 { 1295 {
1065 int signum; 1296 sig_pending = 0;
1066 gotsig = 0;
1067 1297
1068 for (signum = signalmax; signum--; ) 1298 for (i = EV_NSIG - 1; i--; )
1069 if (signals [signum].gotsig) 1299 if (expect_false (signals [i].pending))
1070 ev_feed_signal_event (EV_A_ signum + 1); 1300 ev_feed_signal_event (EV_A_ i + 1);
1071 } 1301 }
1072 1302
1073#if EV_ASYNC_ENABLE 1303#if EV_ASYNC_ENABLE
1074 if (gotasync) 1304 if (async_pending)
1075 { 1305 {
1076 int i; 1306 async_pending = 0;
1077 gotasync = 0;
1078 1307
1079 for (i = asynccnt; i--; ) 1308 for (i = asynccnt; i--; )
1080 if (asyncs [i]->sent) 1309 if (asyncs [i]->sent)
1081 { 1310 {
1082 asyncs [i]->sent = 0; 1311 asyncs [i]->sent = 0;
… …
1090 1319
1091static void 1320static void
1092ev_sighandler (int signum) 1321ev_sighandler (int signum)
1093{ 1322{
1094#if EV_MULTIPLICITY 1323#if EV_MULTIPLICITY
1095 struct ev_loop *loop = &default_loop_struct; 1324 EV_P = signals [signum - 1].loop;
1096#endif 1325#endif
1097 1326
1098#if _WIN32 1327#ifdef _WIN32
1099 signal (signum, ev_sighandler); 1328 signal (signum, ev_sighandler);
1100#endif 1329#endif
1101 1330
1102 signals [signum - 1].gotsig = 1; 1331 signals [signum - 1].pending = 1;
1103 evpipe_write (EV_A_ &gotsig); 1332 evpipe_write (EV_A_ &sig_pending);
1104} 1333}
1105 1334
1106void noinline 1335void noinline
1107ev_feed_signal_event (EV_P_ int signum) 1336ev_feed_signal_event (EV_P_ int signum)
1108{ 1337{
1109 WL w; 1338 WL w;
1110 1339
1340 if (expect_false (signum <= 0 || signum > EV_NSIG))
1341 return;
1342
1343 --signum;
1344
1111#if EV_MULTIPLICITY 1345#if EV_MULTIPLICITY
1112 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1346 /* it is permissible to try to feed a signal to the wrong loop */
1113#endif 1347 /* or, likely more useful, feeding a signal nobody is waiting for */
1114 1348
1115 --signum; 1349 if (expect_false (signals [signum].loop != EV_A))
1116
1117 if (signum < 0 || signum >= signalmax)
1118 return; 1350 return;
1351#endif
1119 1352
1120 signals [signum].gotsig = 0; 1353 signals [signum].pending = 0;
1121 1354
1122 for (w = signals [signum].head; w; w = w->next) 1355 for (w = signals [signum].head; w; w = w->next)
1123 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1356 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1124} 1357}
1125 1358
1359#if EV_USE_SIGNALFD
1360static void
1361sigfdcb (EV_P_ ev_io *iow, int revents)
1362{
1363 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1364
1365 for (;;)
1366 {
1367 ssize_t res = read (sigfd, si, sizeof (si));
1368
1369 /* not ISO-C, as res might be -1, but works with SuS */
1370 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1371 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1372
1373 if (res < (ssize_t)sizeof (si))
1374 break;
1375 }
1376}
1377#endif
1378
1126/*****************************************************************************/ 1379/*****************************************************************************/
1127 1380
1128static WL childs [EV_PID_HASHSIZE]; 1381static WL childs [EV_PID_HASHSIZE];
1129 1382
1130#ifndef _WIN32 1383#ifndef _WIN32
… …
1133 1386
1134#ifndef WIFCONTINUED 1387#ifndef WIFCONTINUED
1135# define WIFCONTINUED(status) 0 1388# define WIFCONTINUED(status) 0
1136#endif 1389#endif
1137 1390
1138void inline_speed 1391/* handle a single child status event */
1392inline_speed void
1139child_reap (EV_P_ int chain, int pid, int status) 1393child_reap (EV_P_ int chain, int pid, int status)
1140{ 1394{
1141 ev_child *w; 1395 ev_child *w;
1142 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1396 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1143 1397
… …
1156 1410
1157#ifndef WCONTINUED 1411#ifndef WCONTINUED
1158# define WCONTINUED 0 1412# define WCONTINUED 0
1159#endif 1413#endif
1160 1414
1415/* called on sigchld etc., calls waitpid */
1161static void 1416static void
1162childcb (EV_P_ ev_signal *sw, int revents) 1417childcb (EV_P_ ev_signal *sw, int revents)
1163{ 1418{
1164 int pid, status; 1419 int pid, status;
1165 1420
… …
1246 /* kqueue is borked on everything but netbsd apparently */ 1501 /* kqueue is borked on everything but netbsd apparently */
1247 /* it usually doesn't work correctly on anything but sockets and pipes */ 1502 /* it usually doesn't work correctly on anything but sockets and pipes */
1248 flags &= ~EVBACKEND_KQUEUE; 1503 flags &= ~EVBACKEND_KQUEUE;
1249#endif 1504#endif
1250#ifdef __APPLE__ 1505#ifdef __APPLE__
1251 // flags &= ~EVBACKEND_KQUEUE; for documentation 1506 /* only select works correctly on that "unix-certified" platform */
1252 flags &= ~EVBACKEND_POLL; 1507 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1508 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1253#endif 1509#endif
1254 1510
1255 return flags; 1511 return flags;
1256} 1512}
1257 1513
… …
1271ev_backend (EV_P) 1527ev_backend (EV_P)
1272{ 1528{
1273 return backend; 1529 return backend;
1274} 1530}
1275 1531
1532#if EV_MINIMAL < 2
1276unsigned int 1533unsigned int
1277ev_loop_count (EV_P) 1534ev_loop_count (EV_P)
1278{ 1535{
1279 return loop_count; 1536 return loop_count;
1280} 1537}
1281 1538
1539unsigned int
1540ev_loop_depth (EV_P)
1541{
1542 return loop_depth;
1543}
1544
1282void 1545void
1283ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1546ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1284{ 1547{
1285 io_blocktime = interval; 1548 io_blocktime = interval;
1286} 1549}
… …
1289ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1552ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1290{ 1553{
1291 timeout_blocktime = interval; 1554 timeout_blocktime = interval;
1292} 1555}
1293 1556
1557void
1558ev_set_userdata (EV_P_ void *data)
1559{
1560 userdata = data;
1561}
1562
1563void *
1564ev_userdata (EV_P)
1565{
1566 return userdata;
1567}
1568
1569void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1570{
1571 invoke_cb = invoke_pending_cb;
1572}
1573
1574void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1575{
1576 release_cb = release;
1577 acquire_cb = acquire;
1578}
1579#endif
1580
1581/* initialise a loop structure, must be zero-initialised */
1294static void noinline 1582static void noinline
1295loop_init (EV_P_ unsigned int flags) 1583loop_init (EV_P_ unsigned int flags)
1296{ 1584{
1297 if (!backend) 1585 if (!backend)
1298 { 1586 {
1587#if EV_USE_REALTIME
1588 if (!have_realtime)
1589 {
1590 struct timespec ts;
1591
1592 if (!clock_gettime (CLOCK_REALTIME, &ts))
1593 have_realtime = 1;
1594 }
1595#endif
1596
1299#if EV_USE_MONOTONIC 1597#if EV_USE_MONOTONIC
1598 if (!have_monotonic)
1300 { 1599 {
1301 struct timespec ts; 1600 struct timespec ts;
1601
1302 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1602 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1303 have_monotonic = 1; 1603 have_monotonic = 1;
1304 } 1604 }
1305#endif 1605#endif
1606
1607 /* pid check not overridable via env */
1608#ifndef _WIN32
1609 if (flags & EVFLAG_FORKCHECK)
1610 curpid = getpid ();
1611#endif
1612
1613 if (!(flags & EVFLAG_NOENV)
1614 && !enable_secure ()
1615 && getenv ("LIBEV_FLAGS"))
1616 flags = atoi (getenv ("LIBEV_FLAGS"));
1306 1617
1307 ev_rt_now = ev_time (); 1618 ev_rt_now = ev_time ();
1308 mn_now = get_clock (); 1619 mn_now = get_clock ();
1309 now_floor = mn_now; 1620 now_floor = mn_now;
1310 rtmn_diff = ev_rt_now - mn_now; 1621 rtmn_diff = ev_rt_now - mn_now;
1622#if EV_MINIMAL < 2
1623 invoke_cb = ev_invoke_pending;
1624#endif
1311 1625
1312 io_blocktime = 0.; 1626 io_blocktime = 0.;
1313 timeout_blocktime = 0.; 1627 timeout_blocktime = 0.;
1314 backend = 0; 1628 backend = 0;
1315 backend_fd = -1; 1629 backend_fd = -1;
1316 gotasync = 0; 1630 sig_pending = 0;
1631#if EV_ASYNC_ENABLE
1632 async_pending = 0;
1633#endif
1317#if EV_USE_INOTIFY 1634#if EV_USE_INOTIFY
1318 fs_fd = -2; 1635 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1319#endif 1636#endif
1320 1637#if EV_USE_SIGNALFD
1321 /* pid check not overridable via env */ 1638 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1322#ifndef _WIN32
1323 if (flags & EVFLAG_FORKCHECK)
1324 curpid = getpid ();
1325#endif 1639#endif
1326
1327 if (!(flags & EVFLAG_NOENV)
1328 && !enable_secure ()
1329 && getenv ("LIBEV_FLAGS"))
1330 flags = atoi (getenv ("LIBEV_FLAGS"));
1331 1640
1332 if (!(flags & 0x0000ffffU)) 1641 if (!(flags & 0x0000ffffU))
1333 flags |= ev_recommended_backends (); 1642 flags |= ev_recommended_backends ();
1334 1643
1335#if EV_USE_PORT 1644#if EV_USE_PORT
… …
1346#endif 1655#endif
1347#if EV_USE_SELECT 1656#if EV_USE_SELECT
1348 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1657 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1349#endif 1658#endif
1350 1659
1660 ev_prepare_init (&pending_w, pendingcb);
1661
1351 ev_init (&pipeev, pipecb); 1662 ev_init (&pipe_w, pipecb);
1352 ev_set_priority (&pipeev, EV_MAXPRI); 1663 ev_set_priority (&pipe_w, EV_MAXPRI);
1353 } 1664 }
1354} 1665}
1355 1666
1667/* free up a loop structure */
1356static void noinline 1668static void noinline
1357loop_destroy (EV_P) 1669loop_destroy (EV_P)
1358{ 1670{
1359 int i; 1671 int i;
1360 1672
1361 if (ev_is_active (&pipeev)) 1673 if (ev_is_active (&pipe_w))
1362 { 1674 {
1363 ev_ref (EV_A); /* signal watcher */ 1675 /*ev_ref (EV_A);*/
1364 ev_io_stop (EV_A_ &pipeev); 1676 /*ev_io_stop (EV_A_ &pipe_w);*/
1365 1677
1366#if EV_USE_EVENTFD 1678#if EV_USE_EVENTFD
1367 if (evfd >= 0) 1679 if (evfd >= 0)
1368 close (evfd); 1680 close (evfd);
1369#endif 1681#endif
1370 1682
1371 if (evpipe [0] >= 0) 1683 if (evpipe [0] >= 0)
1372 { 1684 {
1373 close (evpipe [0]); 1685 EV_WIN32_CLOSE_FD (evpipe [0]);
1374 close (evpipe [1]); 1686 EV_WIN32_CLOSE_FD (evpipe [1]);
1375 } 1687 }
1376 } 1688 }
1689
1690#if EV_USE_SIGNALFD
1691 if (ev_is_active (&sigfd_w))
1692 close (sigfd);
1693#endif
1377 1694
1378#if EV_USE_INOTIFY 1695#if EV_USE_INOTIFY
1379 if (fs_fd >= 0) 1696 if (fs_fd >= 0)
1380 close (fs_fd); 1697 close (fs_fd);
1381#endif 1698#endif
… …
1405#if EV_IDLE_ENABLE 1722#if EV_IDLE_ENABLE
1406 array_free (idle, [i]); 1723 array_free (idle, [i]);
1407#endif 1724#endif
1408 } 1725 }
1409 1726
1410 ev_free (anfds); anfdmax = 0; 1727 ev_free (anfds); anfds = 0; anfdmax = 0;
1411 1728
1412 /* have to use the microsoft-never-gets-it-right macro */ 1729 /* have to use the microsoft-never-gets-it-right macro */
1730 array_free (rfeed, EMPTY);
1413 array_free (fdchange, EMPTY); 1731 array_free (fdchange, EMPTY);
1414 array_free (timer, EMPTY); 1732 array_free (timer, EMPTY);
1415#if EV_PERIODIC_ENABLE 1733#if EV_PERIODIC_ENABLE
1416 array_free (periodic, EMPTY); 1734 array_free (periodic, EMPTY);
1417#endif 1735#endif
… …
1426 1744
1427 backend = 0; 1745 backend = 0;
1428} 1746}
1429 1747
1430#if EV_USE_INOTIFY 1748#if EV_USE_INOTIFY
1431void inline_size infy_fork (EV_P); 1749inline_size void infy_fork (EV_P);
1432#endif 1750#endif
1433 1751
1434void inline_size 1752inline_size void
1435loop_fork (EV_P) 1753loop_fork (EV_P)
1436{ 1754{
1437#if EV_USE_PORT 1755#if EV_USE_PORT
1438 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1756 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1439#endif 1757#endif
… …
1445#endif 1763#endif
1446#if EV_USE_INOTIFY 1764#if EV_USE_INOTIFY
1447 infy_fork (EV_A); 1765 infy_fork (EV_A);
1448#endif 1766#endif
1449 1767
1450 if (ev_is_active (&pipeev)) 1768 if (ev_is_active (&pipe_w))
1451 { 1769 {
1452 /* this "locks" the handlers against writing to the pipe */ 1770 /* this "locks" the handlers against writing to the pipe */
1453 /* while we modify the fd vars */ 1771 /* while we modify the fd vars */
1454 gotsig = 1; 1772 sig_pending = 1;
1455#if EV_ASYNC_ENABLE 1773#if EV_ASYNC_ENABLE
1456 gotasync = 1; 1774 async_pending = 1;
1457#endif 1775#endif
1458 1776
1459 ev_ref (EV_A); 1777 ev_ref (EV_A);
1460 ev_io_stop (EV_A_ &pipeev); 1778 ev_io_stop (EV_A_ &pipe_w);
1461 1779
1462#if EV_USE_EVENTFD 1780#if EV_USE_EVENTFD
1463 if (evfd >= 0) 1781 if (evfd >= 0)
1464 close (evfd); 1782 close (evfd);
1465#endif 1783#endif
1466 1784
1467 if (evpipe [0] >= 0) 1785 if (evpipe [0] >= 0)
1468 { 1786 {
1469 close (evpipe [0]); 1787 EV_WIN32_CLOSE_FD (evpipe [0]);
1470 close (evpipe [1]); 1788 EV_WIN32_CLOSE_FD (evpipe [1]);
1471 } 1789 }
1472 1790
1473 evpipe_init (EV_A); 1791 evpipe_init (EV_A);
1474 /* now iterate over everything, in case we missed something */ 1792 /* now iterate over everything, in case we missed something */
1475 pipecb (EV_A_ &pipeev, EV_READ); 1793 pipecb (EV_A_ &pipe_w, EV_READ);
1476 } 1794 }
1477 1795
1478 postfork = 0; 1796 postfork = 0;
1479} 1797}
1480 1798
1481#if EV_MULTIPLICITY 1799#if EV_MULTIPLICITY
1482 1800
1483struct ev_loop * 1801struct ev_loop *
1484ev_loop_new (unsigned int flags) 1802ev_loop_new (unsigned int flags)
1485{ 1803{
1486 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1804 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1487 1805
1488 memset (loop, 0, sizeof (struct ev_loop)); 1806 memset (EV_A, 0, sizeof (struct ev_loop));
1489
1490 loop_init (EV_A_ flags); 1807 loop_init (EV_A_ flags);
1491 1808
1492 if (ev_backend (EV_A)) 1809 if (ev_backend (EV_A))
1493 return loop; 1810 return EV_A;
1494 1811
1495 return 0; 1812 return 0;
1496} 1813}
1497 1814
1498void 1815void
… …
1505void 1822void
1506ev_loop_fork (EV_P) 1823ev_loop_fork (EV_P)
1507{ 1824{
1508 postfork = 1; /* must be in line with ev_default_fork */ 1825 postfork = 1; /* must be in line with ev_default_fork */
1509} 1826}
1827#endif /* multiplicity */
1510 1828
1511#if EV_VERIFY 1829#if EV_VERIFY
1512void noinline 1830static void noinline
1513verify_watcher (EV_P_ W w) 1831verify_watcher (EV_P_ W w)
1514{ 1832{
1515 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 1833 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1516 1834
1517 if (w->pending) 1835 if (w->pending)
1518 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 1836 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1519} 1837}
1520 1838
1521static void noinline 1839static void noinline
1522verify_heap (EV_P_ ANHE *heap, int N) 1840verify_heap (EV_P_ ANHE *heap, int N)
1523{ 1841{
1524 int i; 1842 int i;
1525 1843
1526 for (i = HEAP0; i < N + HEAP0; ++i) 1844 for (i = HEAP0; i < N + HEAP0; ++i)
1527 { 1845 {
1528 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 1846 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1529 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 1847 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1530 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 1848 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1531 1849
1532 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 1850 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1533 } 1851 }
1534} 1852}
1535 1853
1536static void noinline 1854static void noinline
1537array_verify (EV_P_ W *ws, int cnt) 1855array_verify (EV_P_ W *ws, int cnt)
1538{ 1856{
1539 while (cnt--) 1857 while (cnt--)
1540 { 1858 {
1541 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1859 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1542 verify_watcher (EV_A_ ws [cnt]); 1860 verify_watcher (EV_A_ ws [cnt]);
1543 } 1861 }
1544} 1862}
1545#endif 1863#endif
1546 1864
1865#if EV_MINIMAL < 2
1547void 1866void
1548ev_loop_verify (EV_P) 1867ev_loop_verify (EV_P)
1549{ 1868{
1550#if EV_VERIFY 1869#if EV_VERIFY
1551 int i; 1870 int i;
… …
1553 1872
1554 assert (activecnt >= -1); 1873 assert (activecnt >= -1);
1555 1874
1556 assert (fdchangemax >= fdchangecnt); 1875 assert (fdchangemax >= fdchangecnt);
1557 for (i = 0; i < fdchangecnt; ++i) 1876 for (i = 0; i < fdchangecnt; ++i)
1558 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 1877 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1559 1878
1560 assert (anfdmax >= 0); 1879 assert (anfdmax >= 0);
1561 for (i = 0; i < anfdmax; ++i) 1880 for (i = 0; i < anfdmax; ++i)
1562 for (w = anfds [i].head; w; w = w->next) 1881 for (w = anfds [i].head; w; w = w->next)
1563 { 1882 {
1564 verify_watcher (EV_A_ (W)w); 1883 verify_watcher (EV_A_ (W)w);
1565 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 1884 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1566 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 1885 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1567 } 1886 }
1568 1887
1569 assert (timermax >= timercnt); 1888 assert (timermax >= timercnt);
1570 verify_heap (EV_A_ timers, timercnt); 1889 verify_heap (EV_A_ timers, timercnt);
1571 1890
… …
1600 assert (checkmax >= checkcnt); 1919 assert (checkmax >= checkcnt);
1601 array_verify (EV_A_ (W *)checks, checkcnt); 1920 array_verify (EV_A_ (W *)checks, checkcnt);
1602 1921
1603# if 0 1922# if 0
1604 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1923 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1605 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 1924 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1606# endif
1607#endif 1925# endif
1926#endif
1608} 1927}
1609 1928#endif
1610#endif /* multiplicity */
1611 1929
1612#if EV_MULTIPLICITY 1930#if EV_MULTIPLICITY
1613struct ev_loop * 1931struct ev_loop *
1614ev_default_loop_init (unsigned int flags) 1932ev_default_loop_init (unsigned int flags)
1615#else 1933#else
… …
1618#endif 1936#endif
1619{ 1937{
1620 if (!ev_default_loop_ptr) 1938 if (!ev_default_loop_ptr)
1621 { 1939 {
1622#if EV_MULTIPLICITY 1940#if EV_MULTIPLICITY
1623 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1941 EV_P = ev_default_loop_ptr = &default_loop_struct;
1624#else 1942#else
1625 ev_default_loop_ptr = 1; 1943 ev_default_loop_ptr = 1;
1626#endif 1944#endif
1627 1945
1628 loop_init (EV_A_ flags); 1946 loop_init (EV_A_ flags);
… …
1645 1963
1646void 1964void
1647ev_default_destroy (void) 1965ev_default_destroy (void)
1648{ 1966{
1649#if EV_MULTIPLICITY 1967#if EV_MULTIPLICITY
1650 struct ev_loop *loop = ev_default_loop_ptr; 1968 EV_P = ev_default_loop_ptr;
1651#endif 1969#endif
1970
1971 ev_default_loop_ptr = 0;
1652 1972
1653#ifndef _WIN32 1973#ifndef _WIN32
1654 ev_ref (EV_A); /* child watcher */ 1974 ev_ref (EV_A); /* child watcher */
1655 ev_signal_stop (EV_A_ &childev); 1975 ev_signal_stop (EV_A_ &childev);
1656#endif 1976#endif
… …
1660 1980
1661void 1981void
1662ev_default_fork (void) 1982ev_default_fork (void)
1663{ 1983{
1664#if EV_MULTIPLICITY 1984#if EV_MULTIPLICITY
1665 struct ev_loop *loop = ev_default_loop_ptr; 1985 EV_P = ev_default_loop_ptr;
1666#endif 1986#endif
1667 1987
1668 if (backend)
1669 postfork = 1; /* must be in line with ev_loop_fork */ 1988 postfork = 1; /* must be in line with ev_loop_fork */
1670} 1989}
1671 1990
1672/*****************************************************************************/ 1991/*****************************************************************************/
1673 1992
1674void 1993void
1675ev_invoke (EV_P_ void *w, int revents) 1994ev_invoke (EV_P_ void *w, int revents)
1676{ 1995{
1677 EV_CB_INVOKE ((W)w, revents); 1996 EV_CB_INVOKE ((W)w, revents);
1678} 1997}
1679 1998
1680void inline_speed 1999unsigned int
1681call_pending (EV_P) 2000ev_pending_count (EV_P)
2001{
2002 int pri;
2003 unsigned int count = 0;
2004
2005 for (pri = NUMPRI; pri--; )
2006 count += pendingcnt [pri];
2007
2008 return count;
2009}
2010
2011void noinline
2012ev_invoke_pending (EV_P)
1682{ 2013{
1683 int pri; 2014 int pri;
1684 2015
1685 for (pri = NUMPRI; pri--; ) 2016 for (pri = NUMPRI; pri--; )
1686 while (pendingcnt [pri]) 2017 while (pendingcnt [pri])
1687 { 2018 {
1688 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2019 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1689 2020
1690 if (expect_true (p->w))
1691 {
1692 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2021 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2022 /* ^ this is no longer true, as pending_w could be here */
1693 2023
1694 p->w->pending = 0; 2024 p->w->pending = 0;
1695 EV_CB_INVOKE (p->w, p->events); 2025 EV_CB_INVOKE (p->w, p->events);
1696 EV_FREQUENT_CHECK; 2026 EV_FREQUENT_CHECK;
1697 }
1698 } 2027 }
1699} 2028}
1700 2029
1701#if EV_IDLE_ENABLE 2030#if EV_IDLE_ENABLE
1702void inline_size 2031/* make idle watchers pending. this handles the "call-idle */
2032/* only when higher priorities are idle" logic */
2033inline_size void
1703idle_reify (EV_P) 2034idle_reify (EV_P)
1704{ 2035{
1705 if (expect_false (idleall)) 2036 if (expect_false (idleall))
1706 { 2037 {
1707 int pri; 2038 int pri;
… …
1719 } 2050 }
1720 } 2051 }
1721} 2052}
1722#endif 2053#endif
1723 2054
1724void inline_size 2055/* make timers pending */
2056inline_size void
1725timers_reify (EV_P) 2057timers_reify (EV_P)
1726{ 2058{
1727 EV_FREQUENT_CHECK; 2059 EV_FREQUENT_CHECK;
1728 2060
1729 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2061 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1730 { 2062 {
1731 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2063 do
1732
1733 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1734
1735 /* first reschedule or stop timer */
1736 if (w->repeat)
1737 { 2064 {
2065 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2066
2067 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2068
2069 /* first reschedule or stop timer */
2070 if (w->repeat)
2071 {
1738 ev_at (w) += w->repeat; 2072 ev_at (w) += w->repeat;
1739 if (ev_at (w) < mn_now) 2073 if (ev_at (w) < mn_now)
1740 ev_at (w) = mn_now; 2074 ev_at (w) = mn_now;
1741 2075
1742 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2076 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1743 2077
1744 ANHE_at_cache (timers [HEAP0]); 2078 ANHE_at_cache (timers [HEAP0]);
1745 downheap (timers, timercnt, HEAP0); 2079 downheap (timers, timercnt, HEAP0);
2080 }
2081 else
2082 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2083
2084 EV_FREQUENT_CHECK;
2085 feed_reverse (EV_A_ (W)w);
1746 } 2086 }
1747 else 2087 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1748 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1749 2088
1750 EV_FREQUENT_CHECK;
1751 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 2089 feed_reverse_done (EV_A_ EV_TIMEOUT);
1752 } 2090 }
1753} 2091}
1754 2092
1755#if EV_PERIODIC_ENABLE 2093#if EV_PERIODIC_ENABLE
1756void inline_size 2094/* make periodics pending */
2095inline_size void
1757periodics_reify (EV_P) 2096periodics_reify (EV_P)
1758{ 2097{
1759 EV_FREQUENT_CHECK; 2098 EV_FREQUENT_CHECK;
1760 2099
1761 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2100 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1762 { 2101 {
1763 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2102 int feed_count = 0;
1764 2103
1765 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2104 do
1766
1767 /* first reschedule or stop timer */
1768 if (w->reschedule_cb)
1769 { 2105 {
2106 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2107
2108 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2109
2110 /* first reschedule or stop timer */
2111 if (w->reschedule_cb)
2112 {
1770 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2113 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1771 2114
1772 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2115 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1773 2116
1774 ANHE_at_cache (periodics [HEAP0]); 2117 ANHE_at_cache (periodics [HEAP0]);
1775 downheap (periodics, periodiccnt, HEAP0); 2118 downheap (periodics, periodiccnt, HEAP0);
2119 }
2120 else if (w->interval)
2121 {
2122 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2123 /* if next trigger time is not sufficiently in the future, put it there */
2124 /* this might happen because of floating point inexactness */
2125 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2126 {
2127 ev_at (w) += w->interval;
2128
2129 /* if interval is unreasonably low we might still have a time in the past */
2130 /* so correct this. this will make the periodic very inexact, but the user */
2131 /* has effectively asked to get triggered more often than possible */
2132 if (ev_at (w) < ev_rt_now)
2133 ev_at (w) = ev_rt_now;
2134 }
2135
2136 ANHE_at_cache (periodics [HEAP0]);
2137 downheap (periodics, periodiccnt, HEAP0);
2138 }
2139 else
2140 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2141
2142 EV_FREQUENT_CHECK;
2143 feed_reverse (EV_A_ (W)w);
1776 } 2144 }
1777 else if (w->interval) 2145 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1778 {
1779 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1780 /* if next trigger time is not sufficiently in the future, put it there */
1781 /* this might happen because of floating point inexactness */
1782 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1783 {
1784 ev_at (w) += w->interval;
1785 2146
1786 /* if interval is unreasonably low we might still have a time in the past */
1787 /* so correct this. this will make the periodic very inexact, but the user */
1788 /* has effectively asked to get triggered more often than possible */
1789 if (ev_at (w) < ev_rt_now)
1790 ev_at (w) = ev_rt_now;
1791 }
1792
1793 ANHE_at_cache (periodics [HEAP0]);
1794 downheap (periodics, periodiccnt, HEAP0);
1795 }
1796 else
1797 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1798
1799 EV_FREQUENT_CHECK;
1800 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2147 feed_reverse_done (EV_A_ EV_PERIODIC);
1801 } 2148 }
1802} 2149}
1803 2150
2151/* simply recalculate all periodics */
2152/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1804static void noinline 2153static void noinline
1805periodics_reschedule (EV_P) 2154periodics_reschedule (EV_P)
1806{ 2155{
1807 int i; 2156 int i;
1808 2157
… …
1821 2170
1822 reheap (periodics, periodiccnt); 2171 reheap (periodics, periodiccnt);
1823} 2172}
1824#endif 2173#endif
1825 2174
1826void inline_speed 2175/* adjust all timers by a given offset */
2176static void noinline
2177timers_reschedule (EV_P_ ev_tstamp adjust)
2178{
2179 int i;
2180
2181 for (i = 0; i < timercnt; ++i)
2182 {
2183 ANHE *he = timers + i + HEAP0;
2184 ANHE_w (*he)->at += adjust;
2185 ANHE_at_cache (*he);
2186 }
2187}
2188
2189/* fetch new monotonic and realtime times from the kernel */
2190/* also detect if there was a timejump, and act accordingly */
2191inline_speed void
1827time_update (EV_P_ ev_tstamp max_block) 2192time_update (EV_P_ ev_tstamp max_block)
1828{ 2193{
1829 int i;
1830
1831#if EV_USE_MONOTONIC 2194#if EV_USE_MONOTONIC
1832 if (expect_true (have_monotonic)) 2195 if (expect_true (have_monotonic))
1833 { 2196 {
2197 int i;
1834 ev_tstamp odiff = rtmn_diff; 2198 ev_tstamp odiff = rtmn_diff;
1835 2199
1836 mn_now = get_clock (); 2200 mn_now = get_clock ();
1837 2201
1838 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2202 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1864 ev_rt_now = ev_time (); 2228 ev_rt_now = ev_time ();
1865 mn_now = get_clock (); 2229 mn_now = get_clock ();
1866 now_floor = mn_now; 2230 now_floor = mn_now;
1867 } 2231 }
1868 2232
2233 /* no timer adjustment, as the monotonic clock doesn't jump */
2234 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1869# if EV_PERIODIC_ENABLE 2235# if EV_PERIODIC_ENABLE
1870 periodics_reschedule (EV_A); 2236 periodics_reschedule (EV_A);
1871# endif 2237# endif
1872 /* no timer adjustment, as the monotonic clock doesn't jump */
1873 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1874 } 2238 }
1875 else 2239 else
1876#endif 2240#endif
1877 { 2241 {
1878 ev_rt_now = ev_time (); 2242 ev_rt_now = ev_time ();
1879 2243
1880 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2244 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1881 { 2245 {
2246 /* adjust timers. this is easy, as the offset is the same for all of them */
2247 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1882#if EV_PERIODIC_ENABLE 2248#if EV_PERIODIC_ENABLE
1883 periodics_reschedule (EV_A); 2249 periodics_reschedule (EV_A);
1884#endif 2250#endif
1885 /* adjust timers. this is easy, as the offset is the same for all of them */
1886 for (i = 0; i < timercnt; ++i)
1887 {
1888 ANHE *he = timers + i + HEAP0;
1889 ANHE_w (*he)->at += ev_rt_now - mn_now;
1890 ANHE_at_cache (*he);
1891 }
1892 } 2251 }
1893 2252
1894 mn_now = ev_rt_now; 2253 mn_now = ev_rt_now;
1895 } 2254 }
1896} 2255}
1897 2256
1898void 2257void
1899ev_ref (EV_P)
1900{
1901 ++activecnt;
1902}
1903
1904void
1905ev_unref (EV_P)
1906{
1907 --activecnt;
1908}
1909
1910static int loop_done;
1911
1912void
1913ev_loop (EV_P_ int flags) 2258ev_loop (EV_P_ int flags)
1914{ 2259{
2260#if EV_MINIMAL < 2
2261 ++loop_depth;
2262#endif
2263
2264 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2265
1915 loop_done = EVUNLOOP_CANCEL; 2266 loop_done = EVUNLOOP_CANCEL;
1916 2267
1917 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2268 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1918 2269
1919 do 2270 do
1920 { 2271 {
1921#if EV_VERIFY >= 2 2272#if EV_VERIFY >= 2
1922 ev_loop_verify (EV_A); 2273 ev_loop_verify (EV_A);
… …
1935 /* we might have forked, so queue fork handlers */ 2286 /* we might have forked, so queue fork handlers */
1936 if (expect_false (postfork)) 2287 if (expect_false (postfork))
1937 if (forkcnt) 2288 if (forkcnt)
1938 { 2289 {
1939 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2290 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1940 call_pending (EV_A); 2291 EV_INVOKE_PENDING;
1941 } 2292 }
1942#endif 2293#endif
1943 2294
1944 /* queue prepare watchers (and execute them) */ 2295 /* queue prepare watchers (and execute them) */
1945 if (expect_false (preparecnt)) 2296 if (expect_false (preparecnt))
1946 { 2297 {
1947 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2298 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1948 call_pending (EV_A); 2299 EV_INVOKE_PENDING;
1949 } 2300 }
1950 2301
1951 if (expect_false (!activecnt)) 2302 if (expect_false (loop_done))
1952 break; 2303 break;
1953 2304
1954 /* we might have forked, so reify kernel state if necessary */ 2305 /* we might have forked, so reify kernel state if necessary */
1955 if (expect_false (postfork)) 2306 if (expect_false (postfork))
1956 loop_fork (EV_A); 2307 loop_fork (EV_A);
… …
1963 ev_tstamp waittime = 0.; 2314 ev_tstamp waittime = 0.;
1964 ev_tstamp sleeptime = 0.; 2315 ev_tstamp sleeptime = 0.;
1965 2316
1966 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2317 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1967 { 2318 {
2319 /* remember old timestamp for io_blocktime calculation */
2320 ev_tstamp prev_mn_now = mn_now;
2321
1968 /* update time to cancel out callback processing overhead */ 2322 /* update time to cancel out callback processing overhead */
1969 time_update (EV_A_ 1e100); 2323 time_update (EV_A_ 1e100);
1970 2324
1971 waittime = MAX_BLOCKTIME; 2325 waittime = MAX_BLOCKTIME;
1972 2326
… …
1982 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2336 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1983 if (waittime > to) waittime = to; 2337 if (waittime > to) waittime = to;
1984 } 2338 }
1985#endif 2339#endif
1986 2340
2341 /* don't let timeouts decrease the waittime below timeout_blocktime */
1987 if (expect_false (waittime < timeout_blocktime)) 2342 if (expect_false (waittime < timeout_blocktime))
1988 waittime = timeout_blocktime; 2343 waittime = timeout_blocktime;
1989 2344
1990 sleeptime = waittime - backend_fudge; 2345 /* extra check because io_blocktime is commonly 0 */
1991
1992 if (expect_true (sleeptime > io_blocktime)) 2346 if (expect_false (io_blocktime))
1993 sleeptime = io_blocktime;
1994
1995 if (sleeptime)
1996 { 2347 {
2348 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2349
2350 if (sleeptime > waittime - backend_fudge)
2351 sleeptime = waittime - backend_fudge;
2352
2353 if (expect_true (sleeptime > 0.))
2354 {
1997 ev_sleep (sleeptime); 2355 ev_sleep (sleeptime);
1998 waittime -= sleeptime; 2356 waittime -= sleeptime;
2357 }
1999 } 2358 }
2000 } 2359 }
2001 2360
2361#if EV_MINIMAL < 2
2002 ++loop_count; 2362 ++loop_count;
2363#endif
2364 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2003 backend_poll (EV_A_ waittime); 2365 backend_poll (EV_A_ waittime);
2366 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2004 2367
2005 /* update ev_rt_now, do magic */ 2368 /* update ev_rt_now, do magic */
2006 time_update (EV_A_ waittime + sleeptime); 2369 time_update (EV_A_ waittime + sleeptime);
2007 } 2370 }
2008 2371
… …
2019 2382
2020 /* queue check watchers, to be executed first */ 2383 /* queue check watchers, to be executed first */
2021 if (expect_false (checkcnt)) 2384 if (expect_false (checkcnt))
2022 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2385 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2023 2386
2024 call_pending (EV_A); 2387 EV_INVOKE_PENDING;
2025 } 2388 }
2026 while (expect_true ( 2389 while (expect_true (
2027 activecnt 2390 activecnt
2028 && !loop_done 2391 && !loop_done
2029 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2392 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2030 )); 2393 ));
2031 2394
2032 if (loop_done == EVUNLOOP_ONE) 2395 if (loop_done == EVUNLOOP_ONE)
2033 loop_done = EVUNLOOP_CANCEL; 2396 loop_done = EVUNLOOP_CANCEL;
2397
2398#if EV_MINIMAL < 2
2399 --loop_depth;
2400#endif
2034} 2401}
2035 2402
2036void 2403void
2037ev_unloop (EV_P_ int how) 2404ev_unloop (EV_P_ int how)
2038{ 2405{
2039 loop_done = how; 2406 loop_done = how;
2040} 2407}
2041 2408
2409void
2410ev_ref (EV_P)
2411{
2412 ++activecnt;
2413}
2414
2415void
2416ev_unref (EV_P)
2417{
2418 --activecnt;
2419}
2420
2421void
2422ev_now_update (EV_P)
2423{
2424 time_update (EV_A_ 1e100);
2425}
2426
2427void
2428ev_suspend (EV_P)
2429{
2430 ev_now_update (EV_A);
2431}
2432
2433void
2434ev_resume (EV_P)
2435{
2436 ev_tstamp mn_prev = mn_now;
2437
2438 ev_now_update (EV_A);
2439 timers_reschedule (EV_A_ mn_now - mn_prev);
2440#if EV_PERIODIC_ENABLE
2441 /* TODO: really do this? */
2442 periodics_reschedule (EV_A);
2443#endif
2444}
2445
2042/*****************************************************************************/ 2446/*****************************************************************************/
2447/* singly-linked list management, used when the expected list length is short */
2043 2448
2044void inline_size 2449inline_size void
2045wlist_add (WL *head, WL elem) 2450wlist_add (WL *head, WL elem)
2046{ 2451{
2047 elem->next = *head; 2452 elem->next = *head;
2048 *head = elem; 2453 *head = elem;
2049} 2454}
2050 2455
2051void inline_size 2456inline_size void
2052wlist_del (WL *head, WL elem) 2457wlist_del (WL *head, WL elem)
2053{ 2458{
2054 while (*head) 2459 while (*head)
2055 { 2460 {
2056 if (*head == elem) 2461 if (expect_true (*head == elem))
2057 { 2462 {
2058 *head = elem->next; 2463 *head = elem->next;
2059 return; 2464 break;
2060 } 2465 }
2061 2466
2062 head = &(*head)->next; 2467 head = &(*head)->next;
2063 } 2468 }
2064} 2469}
2065 2470
2066void inline_speed 2471/* internal, faster, version of ev_clear_pending */
2472inline_speed void
2067clear_pending (EV_P_ W w) 2473clear_pending (EV_P_ W w)
2068{ 2474{
2069 if (w->pending) 2475 if (w->pending)
2070 { 2476 {
2071 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2477 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2072 w->pending = 0; 2478 w->pending = 0;
2073 } 2479 }
2074} 2480}
2075 2481
2076int 2482int
… …
2080 int pending = w_->pending; 2486 int pending = w_->pending;
2081 2487
2082 if (expect_true (pending)) 2488 if (expect_true (pending))
2083 { 2489 {
2084 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2490 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2491 p->w = (W)&pending_w;
2085 w_->pending = 0; 2492 w_->pending = 0;
2086 p->w = 0;
2087 return p->events; 2493 return p->events;
2088 } 2494 }
2089 else 2495 else
2090 return 0; 2496 return 0;
2091} 2497}
2092 2498
2093void inline_size 2499inline_size void
2094pri_adjust (EV_P_ W w) 2500pri_adjust (EV_P_ W w)
2095{ 2501{
2096 int pri = w->priority; 2502 int pri = ev_priority (w);
2097 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2503 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2098 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2504 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2099 w->priority = pri; 2505 ev_set_priority (w, pri);
2100} 2506}
2101 2507
2102void inline_speed 2508inline_speed void
2103ev_start (EV_P_ W w, int active) 2509ev_start (EV_P_ W w, int active)
2104{ 2510{
2105 pri_adjust (EV_A_ w); 2511 pri_adjust (EV_A_ w);
2106 w->active = active; 2512 w->active = active;
2107 ev_ref (EV_A); 2513 ev_ref (EV_A);
2108} 2514}
2109 2515
2110void inline_size 2516inline_size void
2111ev_stop (EV_P_ W w) 2517ev_stop (EV_P_ W w)
2112{ 2518{
2113 ev_unref (EV_A); 2519 ev_unref (EV_A);
2114 w->active = 0; 2520 w->active = 0;
2115} 2521}
… …
2122 int fd = w->fd; 2528 int fd = w->fd;
2123 2529
2124 if (expect_false (ev_is_active (w))) 2530 if (expect_false (ev_is_active (w)))
2125 return; 2531 return;
2126 2532
2127 assert (("ev_io_start called with negative fd", fd >= 0)); 2533 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2534 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2128 2535
2129 EV_FREQUENT_CHECK; 2536 EV_FREQUENT_CHECK;
2130 2537
2131 ev_start (EV_A_ (W)w, 1); 2538 ev_start (EV_A_ (W)w, 1);
2132 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2539 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2133 wlist_add (&anfds[fd].head, (WL)w); 2540 wlist_add (&anfds[fd].head, (WL)w);
2134 2541
2135 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2542 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2136 w->events &= ~EV_IOFDSET; 2543 w->events &= ~EV__IOFDSET;
2137 2544
2138 EV_FREQUENT_CHECK; 2545 EV_FREQUENT_CHECK;
2139} 2546}
2140 2547
2141void noinline 2548void noinline
… …
2143{ 2550{
2144 clear_pending (EV_A_ (W)w); 2551 clear_pending (EV_A_ (W)w);
2145 if (expect_false (!ev_is_active (w))) 2552 if (expect_false (!ev_is_active (w)))
2146 return; 2553 return;
2147 2554
2148 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2555 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2149 2556
2150 EV_FREQUENT_CHECK; 2557 EV_FREQUENT_CHECK;
2151 2558
2152 wlist_del (&anfds[w->fd].head, (WL)w); 2559 wlist_del (&anfds[w->fd].head, (WL)w);
2153 ev_stop (EV_A_ (W)w); 2560 ev_stop (EV_A_ (W)w);
… …
2163 if (expect_false (ev_is_active (w))) 2570 if (expect_false (ev_is_active (w)))
2164 return; 2571 return;
2165 2572
2166 ev_at (w) += mn_now; 2573 ev_at (w) += mn_now;
2167 2574
2168 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2575 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2169 2576
2170 EV_FREQUENT_CHECK; 2577 EV_FREQUENT_CHECK;
2171 2578
2172 ++timercnt; 2579 ++timercnt;
2173 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2580 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2176 ANHE_at_cache (timers [ev_active (w)]); 2583 ANHE_at_cache (timers [ev_active (w)]);
2177 upheap (timers, ev_active (w)); 2584 upheap (timers, ev_active (w));
2178 2585
2179 EV_FREQUENT_CHECK; 2586 EV_FREQUENT_CHECK;
2180 2587
2181 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2588 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2182} 2589}
2183 2590
2184void noinline 2591void noinline
2185ev_timer_stop (EV_P_ ev_timer *w) 2592ev_timer_stop (EV_P_ ev_timer *w)
2186{ 2593{
… …
2191 EV_FREQUENT_CHECK; 2598 EV_FREQUENT_CHECK;
2192 2599
2193 { 2600 {
2194 int active = ev_active (w); 2601 int active = ev_active (w);
2195 2602
2196 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2603 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2197 2604
2198 --timercnt; 2605 --timercnt;
2199 2606
2200 if (expect_true (active < timercnt + HEAP0)) 2607 if (expect_true (active < timercnt + HEAP0))
2201 { 2608 {
2202 timers [active] = timers [timercnt + HEAP0]; 2609 timers [active] = timers [timercnt + HEAP0];
2203 adjustheap (timers, timercnt, active); 2610 adjustheap (timers, timercnt, active);
2204 } 2611 }
2205 } 2612 }
2206 2613
2207 EV_FREQUENT_CHECK;
2208
2209 ev_at (w) -= mn_now; 2614 ev_at (w) -= mn_now;
2210 2615
2211 ev_stop (EV_A_ (W)w); 2616 ev_stop (EV_A_ (W)w);
2617
2618 EV_FREQUENT_CHECK;
2212} 2619}
2213 2620
2214void noinline 2621void noinline
2215ev_timer_again (EV_P_ ev_timer *w) 2622ev_timer_again (EV_P_ ev_timer *w)
2216{ 2623{
… …
2234 } 2641 }
2235 2642
2236 EV_FREQUENT_CHECK; 2643 EV_FREQUENT_CHECK;
2237} 2644}
2238 2645
2646ev_tstamp
2647ev_timer_remaining (EV_P_ ev_timer *w)
2648{
2649 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2650}
2651
2239#if EV_PERIODIC_ENABLE 2652#if EV_PERIODIC_ENABLE
2240void noinline 2653void noinline
2241ev_periodic_start (EV_P_ ev_periodic *w) 2654ev_periodic_start (EV_P_ ev_periodic *w)
2242{ 2655{
2243 if (expect_false (ev_is_active (w))) 2656 if (expect_false (ev_is_active (w)))
… …
2245 2658
2246 if (w->reschedule_cb) 2659 if (w->reschedule_cb)
2247 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2660 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2248 else if (w->interval) 2661 else if (w->interval)
2249 { 2662 {
2250 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2663 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2251 /* this formula differs from the one in periodic_reify because we do not always round up */ 2664 /* this formula differs from the one in periodic_reify because we do not always round up */
2252 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2665 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2253 } 2666 }
2254 else 2667 else
2255 ev_at (w) = w->offset; 2668 ev_at (w) = w->offset;
… …
2263 ANHE_at_cache (periodics [ev_active (w)]); 2676 ANHE_at_cache (periodics [ev_active (w)]);
2264 upheap (periodics, ev_active (w)); 2677 upheap (periodics, ev_active (w));
2265 2678
2266 EV_FREQUENT_CHECK; 2679 EV_FREQUENT_CHECK;
2267 2680
2268 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2681 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2269} 2682}
2270 2683
2271void noinline 2684void noinline
2272ev_periodic_stop (EV_P_ ev_periodic *w) 2685ev_periodic_stop (EV_P_ ev_periodic *w)
2273{ 2686{
… …
2278 EV_FREQUENT_CHECK; 2691 EV_FREQUENT_CHECK;
2279 2692
2280 { 2693 {
2281 int active = ev_active (w); 2694 int active = ev_active (w);
2282 2695
2283 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2696 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2284 2697
2285 --periodiccnt; 2698 --periodiccnt;
2286 2699
2287 if (expect_true (active < periodiccnt + HEAP0)) 2700 if (expect_true (active < periodiccnt + HEAP0))
2288 { 2701 {
2289 periodics [active] = periodics [periodiccnt + HEAP0]; 2702 periodics [active] = periodics [periodiccnt + HEAP0];
2290 adjustheap (periodics, periodiccnt, active); 2703 adjustheap (periodics, periodiccnt, active);
2291 } 2704 }
2292 } 2705 }
2293 2706
2294 EV_FREQUENT_CHECK;
2295
2296 ev_stop (EV_A_ (W)w); 2707 ev_stop (EV_A_ (W)w);
2708
2709 EV_FREQUENT_CHECK;
2297} 2710}
2298 2711
2299void noinline 2712void noinline
2300ev_periodic_again (EV_P_ ev_periodic *w) 2713ev_periodic_again (EV_P_ ev_periodic *w)
2301{ 2714{
… …
2310#endif 2723#endif
2311 2724
2312void noinline 2725void noinline
2313ev_signal_start (EV_P_ ev_signal *w) 2726ev_signal_start (EV_P_ ev_signal *w)
2314{ 2727{
2315#if EV_MULTIPLICITY
2316 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2317#endif
2318 if (expect_false (ev_is_active (w))) 2728 if (expect_false (ev_is_active (w)))
2319 return; 2729 return;
2320 2730
2321 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2731 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2322 2732
2323 evpipe_init (EV_A); 2733#if EV_MULTIPLICITY
2734 assert (("libev: a signal must not be attached to two different loops",
2735 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2324 2736
2325 EV_FREQUENT_CHECK; 2737 signals [w->signum - 1].loop = EV_A;
2738#endif
2326 2739
2740 EV_FREQUENT_CHECK;
2741
2742#if EV_USE_SIGNALFD
2743 if (sigfd == -2)
2327 { 2744 {
2328#ifndef _WIN32 2745 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2329 sigset_t full, prev; 2746 if (sigfd < 0 && errno == EINVAL)
2330 sigfillset (&full); 2747 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2331 sigprocmask (SIG_SETMASK, &full, &prev);
2332#endif
2333 2748
2334 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2749 if (sigfd >= 0)
2750 {
2751 fd_intern (sigfd); /* doing it twice will not hurt */
2335 2752
2336#ifndef _WIN32 2753 sigemptyset (&sigfd_set);
2337 sigprocmask (SIG_SETMASK, &prev, 0); 2754
2338#endif 2755 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2756 ev_set_priority (&sigfd_w, EV_MAXPRI);
2757 ev_io_start (EV_A_ &sigfd_w);
2758 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2759 }
2339 } 2760 }
2761
2762 if (sigfd >= 0)
2763 {
2764 /* TODO: check .head */
2765 sigaddset (&sigfd_set, w->signum);
2766 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2767
2768 signalfd (sigfd, &sigfd_set, 0);
2769 }
2770#endif
2340 2771
2341 ev_start (EV_A_ (W)w, 1); 2772 ev_start (EV_A_ (W)w, 1);
2342 wlist_add (&signals [w->signum - 1].head, (WL)w); 2773 wlist_add (&signals [w->signum - 1].head, (WL)w);
2343 2774
2344 if (!((WL)w)->next) 2775 if (!((WL)w)->next)
2776# if EV_USE_SIGNALFD
2777 if (sigfd < 0) /*TODO*/
2778# endif
2345 { 2779 {
2346#if _WIN32 2780# ifdef _WIN32
2781 evpipe_init (EV_A);
2782
2347 signal (w->signum, ev_sighandler); 2783 signal (w->signum, ev_sighandler);
2348#else 2784# else
2349 struct sigaction sa; 2785 struct sigaction sa;
2786
2787 evpipe_init (EV_A);
2788
2350 sa.sa_handler = ev_sighandler; 2789 sa.sa_handler = ev_sighandler;
2351 sigfillset (&sa.sa_mask); 2790 sigfillset (&sa.sa_mask);
2352 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2791 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2353 sigaction (w->signum, &sa, 0); 2792 sigaction (w->signum, &sa, 0);
2793
2794 sigemptyset (&sa.sa_mask);
2795 sigaddset (&sa.sa_mask, w->signum);
2796 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2354#endif 2797#endif
2355 } 2798 }
2356 2799
2357 EV_FREQUENT_CHECK; 2800 EV_FREQUENT_CHECK;
2358} 2801}
2359 2802
2360void noinline 2803void noinline
… …
2368 2811
2369 wlist_del (&signals [w->signum - 1].head, (WL)w); 2812 wlist_del (&signals [w->signum - 1].head, (WL)w);
2370 ev_stop (EV_A_ (W)w); 2813 ev_stop (EV_A_ (W)w);
2371 2814
2372 if (!signals [w->signum - 1].head) 2815 if (!signals [w->signum - 1].head)
2816 {
2817#if EV_MULTIPLICITY
2818 signals [w->signum - 1].loop = 0; /* unattach from signal */
2819#endif
2820#if EV_USE_SIGNALFD
2821 if (sigfd >= 0)
2822 {
2823 sigset_t ss;
2824
2825 sigemptyset (&ss);
2826 sigaddset (&ss, w->signum);
2827 sigdelset (&sigfd_set, w->signum);
2828
2829 signalfd (sigfd, &sigfd_set, 0);
2830 sigprocmask (SIG_UNBLOCK, &ss, 0);
2831 }
2832 else
2833#endif
2373 signal (w->signum, SIG_DFL); 2834 signal (w->signum, SIG_DFL);
2835 }
2374 2836
2375 EV_FREQUENT_CHECK; 2837 EV_FREQUENT_CHECK;
2376} 2838}
2377 2839
2378void 2840void
2379ev_child_start (EV_P_ ev_child *w) 2841ev_child_start (EV_P_ ev_child *w)
2380{ 2842{
2381#if EV_MULTIPLICITY 2843#if EV_MULTIPLICITY
2382 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2844 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2383#endif 2845#endif
2384 if (expect_false (ev_is_active (w))) 2846 if (expect_false (ev_is_active (w)))
2385 return; 2847 return;
2386 2848
2387 EV_FREQUENT_CHECK; 2849 EV_FREQUENT_CHECK;
… …
2412# ifdef _WIN32 2874# ifdef _WIN32
2413# undef lstat 2875# undef lstat
2414# define lstat(a,b) _stati64 (a,b) 2876# define lstat(a,b) _stati64 (a,b)
2415# endif 2877# endif
2416 2878
2417#define DEF_STAT_INTERVAL 5.0074891 2879#define DEF_STAT_INTERVAL 5.0074891
2880#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2418#define MIN_STAT_INTERVAL 0.1074891 2881#define MIN_STAT_INTERVAL 0.1074891
2419 2882
2420static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2883static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2421 2884
2422#if EV_USE_INOTIFY 2885#if EV_USE_INOTIFY
2423# define EV_INOTIFY_BUFSIZE 8192 2886
2887/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2888# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2424 2889
2425static void noinline 2890static void noinline
2426infy_add (EV_P_ ev_stat *w) 2891infy_add (EV_P_ ev_stat *w)
2427{ 2892{
2428 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); 2893 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);
2429 2894
2430 if (w->wd < 0) 2895 if (w->wd >= 0)
2896 {
2897 struct statfs sfs;
2898
2899 /* now local changes will be tracked by inotify, but remote changes won't */
2900 /* unless the filesystem is known to be local, we therefore still poll */
2901 /* also do poll on <2.6.25, but with normal frequency */
2902
2903 if (!fs_2625)
2904 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2905 else if (!statfs (w->path, &sfs)
2906 && (sfs.f_type == 0x1373 /* devfs */
2907 || sfs.f_type == 0xEF53 /* ext2/3 */
2908 || sfs.f_type == 0x3153464a /* jfs */
2909 || sfs.f_type == 0x52654973 /* reiser3 */
2910 || sfs.f_type == 0x01021994 /* tempfs */
2911 || sfs.f_type == 0x58465342 /* xfs */))
2912 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2913 else
2914 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2431 { 2915 }
2432 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2916 else
2917 {
2918 /* can't use inotify, continue to stat */
2919 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2433 2920
2434 /* monitor some parent directory for speedup hints */ 2921 /* if path is not there, monitor some parent directory for speedup hints */
2435 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2922 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2436 /* but an efficiency issue only */ 2923 /* but an efficiency issue only */
2437 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2924 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2438 { 2925 {
2439 char path [4096]; 2926 char path [4096];
2440 strcpy (path, w->path); 2927 strcpy (path, w->path);
… …
2444 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2931 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2445 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2932 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2446 2933
2447 char *pend = strrchr (path, '/'); 2934 char *pend = strrchr (path, '/');
2448 2935
2449 if (!pend) 2936 if (!pend || pend == path)
2450 break; /* whoops, no '/', complain to your admin */ 2937 break;
2451 2938
2452 *pend = 0; 2939 *pend = 0;
2453 w->wd = inotify_add_watch (fs_fd, path, mask); 2940 w->wd = inotify_add_watch (fs_fd, path, mask);
2454 } 2941 }
2455 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2942 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2456 } 2943 }
2457 } 2944 }
2458 else
2459 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2460 2945
2461 if (w->wd >= 0) 2946 if (w->wd >= 0)
2462 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2947 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2948
2949 /* now re-arm timer, if required */
2950 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2951 ev_timer_again (EV_A_ &w->timer);
2952 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2463} 2953}
2464 2954
2465static void noinline 2955static void noinline
2466infy_del (EV_P_ ev_stat *w) 2956infy_del (EV_P_ ev_stat *w)
2467{ 2957{
… …
2481 2971
2482static void noinline 2972static void noinline
2483infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2973infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2484{ 2974{
2485 if (slot < 0) 2975 if (slot < 0)
2486 /* overflow, need to check for all hahs slots */ 2976 /* overflow, need to check for all hash slots */
2487 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2977 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2488 infy_wd (EV_A_ slot, wd, ev); 2978 infy_wd (EV_A_ slot, wd, ev);
2489 else 2979 else
2490 { 2980 {
2491 WL w_; 2981 WL w_;
… …
2497 2987
2498 if (w->wd == wd || wd == -1) 2988 if (w->wd == wd || wd == -1)
2499 { 2989 {
2500 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2990 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2501 { 2991 {
2992 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2502 w->wd = -1; 2993 w->wd = -1;
2503 infy_add (EV_A_ w); /* re-add, no matter what */ 2994 infy_add (EV_A_ w); /* re-add, no matter what */
2504 } 2995 }
2505 2996
2506 stat_timer_cb (EV_A_ &w->timer, 0); 2997 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2511 3002
2512static void 3003static void
2513infy_cb (EV_P_ ev_io *w, int revents) 3004infy_cb (EV_P_ ev_io *w, int revents)
2514{ 3005{
2515 char buf [EV_INOTIFY_BUFSIZE]; 3006 char buf [EV_INOTIFY_BUFSIZE];
2516 struct inotify_event *ev = (struct inotify_event *)buf;
2517 int ofs; 3007 int ofs;
2518 int len = read (fs_fd, buf, sizeof (buf)); 3008 int len = read (fs_fd, buf, sizeof (buf));
2519 3009
2520 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3010 for (ofs = 0; ofs < len; )
3011 {
3012 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2521 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3013 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3014 ofs += sizeof (struct inotify_event) + ev->len;
3015 }
2522} 3016}
2523 3017
2524void inline_size 3018inline_size unsigned int
3019ev_linux_version (void)
3020{
3021 struct utsname buf;
3022 unsigned int v;
3023 int i;
3024 char *p = buf.release;
3025
3026 if (uname (&buf))
3027 return 0;
3028
3029 for (i = 3+1; --i; )
3030 {
3031 unsigned int c = 0;
3032
3033 for (;;)
3034 {
3035 if (*p >= '0' && *p <= '9')
3036 c = c * 10 + *p++ - '0';
3037 else
3038 {
3039 p += *p == '.';
3040 break;
3041 }
3042 }
3043
3044 v = (v << 8) | c;
3045 }
3046
3047 return v;
3048}
3049
3050inline_size void
3051ev_check_2625 (EV_P)
3052{
3053 /* kernels < 2.6.25 are borked
3054 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3055 */
3056 if (ev_linux_version () < 0x020619)
3057 return;
3058
3059 fs_2625 = 1;
3060}
3061
3062inline_size int
3063infy_newfd (void)
3064{
3065#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3066 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3067 if (fd >= 0)
3068 return fd;
3069#endif
3070 return inotify_init ();
3071}
3072
3073inline_size void
2525infy_init (EV_P) 3074infy_init (EV_P)
2526{ 3075{
2527 if (fs_fd != -2) 3076 if (fs_fd != -2)
2528 return; 3077 return;
2529 3078
3079 fs_fd = -1;
3080
3081 ev_check_2625 (EV_A);
3082
2530 fs_fd = inotify_init (); 3083 fs_fd = infy_newfd ();
2531 3084
2532 if (fs_fd >= 0) 3085 if (fs_fd >= 0)
2533 { 3086 {
3087 fd_intern (fs_fd);
2534 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3088 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2535 ev_set_priority (&fs_w, EV_MAXPRI); 3089 ev_set_priority (&fs_w, EV_MAXPRI);
2536 ev_io_start (EV_A_ &fs_w); 3090 ev_io_start (EV_A_ &fs_w);
3091 ev_unref (EV_A);
2537 } 3092 }
2538} 3093}
2539 3094
2540void inline_size 3095inline_size void
2541infy_fork (EV_P) 3096infy_fork (EV_P)
2542{ 3097{
2543 int slot; 3098 int slot;
2544 3099
2545 if (fs_fd < 0) 3100 if (fs_fd < 0)
2546 return; 3101 return;
2547 3102
3103 ev_ref (EV_A);
3104 ev_io_stop (EV_A_ &fs_w);
2548 close (fs_fd); 3105 close (fs_fd);
2549 fs_fd = inotify_init (); 3106 fs_fd = infy_newfd ();
3107
3108 if (fs_fd >= 0)
3109 {
3110 fd_intern (fs_fd);
3111 ev_io_set (&fs_w, fs_fd, EV_READ);
3112 ev_io_start (EV_A_ &fs_w);
3113 ev_unref (EV_A);
3114 }
2550 3115
2551 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3116 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2552 { 3117 {
2553 WL w_ = fs_hash [slot].head; 3118 WL w_ = fs_hash [slot].head;
2554 fs_hash [slot].head = 0; 3119 fs_hash [slot].head = 0;
… …
2561 w->wd = -1; 3126 w->wd = -1;
2562 3127
2563 if (fs_fd >= 0) 3128 if (fs_fd >= 0)
2564 infy_add (EV_A_ w); /* re-add, no matter what */ 3129 infy_add (EV_A_ w); /* re-add, no matter what */
2565 else 3130 else
3131 {
3132 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3133 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2566 ev_timer_start (EV_A_ &w->timer); 3134 ev_timer_again (EV_A_ &w->timer);
3135 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3136 }
2567 } 3137 }
2568
2569 } 3138 }
2570} 3139}
2571 3140
3141#endif
3142
3143#ifdef _WIN32
3144# define EV_LSTAT(p,b) _stati64 (p, b)
3145#else
3146# define EV_LSTAT(p,b) lstat (p, b)
2572#endif 3147#endif
2573 3148
2574void 3149void
2575ev_stat_stat (EV_P_ ev_stat *w) 3150ev_stat_stat (EV_P_ ev_stat *w)
2576{ 3151{
… …
2583static void noinline 3158static void noinline
2584stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3159stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2585{ 3160{
2586 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3161 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2587 3162
2588 /* we copy this here each the time so that */ 3163 ev_statdata prev = w->attr;
2589 /* prev has the old value when the callback gets invoked */
2590 w->prev = w->attr;
2591 ev_stat_stat (EV_A_ w); 3164 ev_stat_stat (EV_A_ w);
2592 3165
2593 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3166 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2594 if ( 3167 if (
2595 w->prev.st_dev != w->attr.st_dev 3168 prev.st_dev != w->attr.st_dev
2596 || w->prev.st_ino != w->attr.st_ino 3169 || prev.st_ino != w->attr.st_ino
2597 || w->prev.st_mode != w->attr.st_mode 3170 || prev.st_mode != w->attr.st_mode
2598 || w->prev.st_nlink != w->attr.st_nlink 3171 || prev.st_nlink != w->attr.st_nlink
2599 || w->prev.st_uid != w->attr.st_uid 3172 || prev.st_uid != w->attr.st_uid
2600 || w->prev.st_gid != w->attr.st_gid 3173 || prev.st_gid != w->attr.st_gid
2601 || w->prev.st_rdev != w->attr.st_rdev 3174 || prev.st_rdev != w->attr.st_rdev
2602 || w->prev.st_size != w->attr.st_size 3175 || prev.st_size != w->attr.st_size
2603 || w->prev.st_atime != w->attr.st_atime 3176 || prev.st_atime != w->attr.st_atime
2604 || w->prev.st_mtime != w->attr.st_mtime 3177 || prev.st_mtime != w->attr.st_mtime
2605 || w->prev.st_ctime != w->attr.st_ctime 3178 || prev.st_ctime != w->attr.st_ctime
2606 ) { 3179 ) {
3180 /* we only update w->prev on actual differences */
3181 /* in case we test more often than invoke the callback, */
3182 /* to ensure that prev is always different to attr */
3183 w->prev = prev;
3184
2607 #if EV_USE_INOTIFY 3185 #if EV_USE_INOTIFY
3186 if (fs_fd >= 0)
3187 {
2608 infy_del (EV_A_ w); 3188 infy_del (EV_A_ w);
2609 infy_add (EV_A_ w); 3189 infy_add (EV_A_ w);
2610 ev_stat_stat (EV_A_ w); /* avoid race... */ 3190 ev_stat_stat (EV_A_ w); /* avoid race... */
3191 }
2611 #endif 3192 #endif
2612 3193
2613 ev_feed_event (EV_A_ w, EV_STAT); 3194 ev_feed_event (EV_A_ w, EV_STAT);
2614 } 3195 }
2615} 3196}
… …
2618ev_stat_start (EV_P_ ev_stat *w) 3199ev_stat_start (EV_P_ ev_stat *w)
2619{ 3200{
2620 if (expect_false (ev_is_active (w))) 3201 if (expect_false (ev_is_active (w)))
2621 return; 3202 return;
2622 3203
2623 /* since we use memcmp, we need to clear any padding data etc. */
2624 memset (&w->prev, 0, sizeof (ev_statdata));
2625 memset (&w->attr, 0, sizeof (ev_statdata));
2626
2627 ev_stat_stat (EV_A_ w); 3204 ev_stat_stat (EV_A_ w);
2628 3205
3206 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2629 if (w->interval < MIN_STAT_INTERVAL) 3207 w->interval = MIN_STAT_INTERVAL;
2630 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2631 3208
2632 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3209 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2633 ev_set_priority (&w->timer, ev_priority (w)); 3210 ev_set_priority (&w->timer, ev_priority (w));
2634 3211
2635#if EV_USE_INOTIFY 3212#if EV_USE_INOTIFY
2636 infy_init (EV_A); 3213 infy_init (EV_A);
2637 3214
2638 if (fs_fd >= 0) 3215 if (fs_fd >= 0)
2639 infy_add (EV_A_ w); 3216 infy_add (EV_A_ w);
2640 else 3217 else
2641#endif 3218#endif
3219 {
2642 ev_timer_start (EV_A_ &w->timer); 3220 ev_timer_again (EV_A_ &w->timer);
3221 ev_unref (EV_A);
3222 }
2643 3223
2644 ev_start (EV_A_ (W)w, 1); 3224 ev_start (EV_A_ (W)w, 1);
2645 3225
2646 EV_FREQUENT_CHECK; 3226 EV_FREQUENT_CHECK;
2647} 3227}
… …
2656 EV_FREQUENT_CHECK; 3236 EV_FREQUENT_CHECK;
2657 3237
2658#if EV_USE_INOTIFY 3238#if EV_USE_INOTIFY
2659 infy_del (EV_A_ w); 3239 infy_del (EV_A_ w);
2660#endif 3240#endif
3241
3242 if (ev_is_active (&w->timer))
3243 {
3244 ev_ref (EV_A);
2661 ev_timer_stop (EV_A_ &w->timer); 3245 ev_timer_stop (EV_A_ &w->timer);
3246 }
2662 3247
2663 ev_stop (EV_A_ (W)w); 3248 ev_stop (EV_A_ (W)w);
2664 3249
2665 EV_FREQUENT_CHECK; 3250 EV_FREQUENT_CHECK;
2666} 3251}
… …
2807embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3392embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2808{ 3393{
2809 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3394 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2810 3395
2811 { 3396 {
2812 struct ev_loop *loop = w->other; 3397 EV_P = w->other;
2813 3398
2814 while (fdchangecnt) 3399 while (fdchangecnt)
2815 { 3400 {
2816 fd_reify (EV_A); 3401 fd_reify (EV_A);
2817 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3402 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2818 } 3403 }
2819 } 3404 }
2820} 3405}
2821 3406
3407static void
3408embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3409{
3410 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3411
3412 ev_embed_stop (EV_A_ w);
3413
3414 {
3415 EV_P = w->other;
3416
3417 ev_loop_fork (EV_A);
3418 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3419 }
3420
3421 ev_embed_start (EV_A_ w);
3422}
3423
2822#if 0 3424#if 0
2823static void 3425static void
2824embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3426embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2825{ 3427{
2826 ev_idle_stop (EV_A_ idle); 3428 ev_idle_stop (EV_A_ idle);
… …
2832{ 3434{
2833 if (expect_false (ev_is_active (w))) 3435 if (expect_false (ev_is_active (w)))
2834 return; 3436 return;
2835 3437
2836 { 3438 {
2837 struct ev_loop *loop = w->other; 3439 EV_P = w->other;
2838 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3440 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2839 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3441 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2840 } 3442 }
2841 3443
2842 EV_FREQUENT_CHECK; 3444 EV_FREQUENT_CHECK;
2843 3445
… …
2846 3448
2847 ev_prepare_init (&w->prepare, embed_prepare_cb); 3449 ev_prepare_init (&w->prepare, embed_prepare_cb);
2848 ev_set_priority (&w->prepare, EV_MINPRI); 3450 ev_set_priority (&w->prepare, EV_MINPRI);
2849 ev_prepare_start (EV_A_ &w->prepare); 3451 ev_prepare_start (EV_A_ &w->prepare);
2850 3452
3453 ev_fork_init (&w->fork, embed_fork_cb);
3454 ev_fork_start (EV_A_ &w->fork);
3455
2851 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3456 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2852 3457
2853 ev_start (EV_A_ (W)w, 1); 3458 ev_start (EV_A_ (W)w, 1);
2854 3459
2855 EV_FREQUENT_CHECK; 3460 EV_FREQUENT_CHECK;
… …
2862 if (expect_false (!ev_is_active (w))) 3467 if (expect_false (!ev_is_active (w)))
2863 return; 3468 return;
2864 3469
2865 EV_FREQUENT_CHECK; 3470 EV_FREQUENT_CHECK;
2866 3471
2867 ev_io_stop (EV_A_ &w->io); 3472 ev_io_stop (EV_A_ &w->io);
2868 ev_prepare_stop (EV_A_ &w->prepare); 3473 ev_prepare_stop (EV_A_ &w->prepare);
3474 ev_fork_stop (EV_A_ &w->fork);
2869 3475
2870 ev_stop (EV_A_ (W)w); 3476 ev_stop (EV_A_ (W)w);
2871 3477
2872 EV_FREQUENT_CHECK; 3478 EV_FREQUENT_CHECK;
2873} 3479}
… …
2952 3558
2953void 3559void
2954ev_async_send (EV_P_ ev_async *w) 3560ev_async_send (EV_P_ ev_async *w)
2955{ 3561{
2956 w->sent = 1; 3562 w->sent = 1;
2957 evpipe_write (EV_A_ &gotasync); 3563 evpipe_write (EV_A_ &async_pending);
2958} 3564}
2959#endif 3565#endif
2960 3566
2961/*****************************************************************************/ 3567/*****************************************************************************/
2962 3568
… …
2972once_cb (EV_P_ struct ev_once *once, int revents) 3578once_cb (EV_P_ struct ev_once *once, int revents)
2973{ 3579{
2974 void (*cb)(int revents, void *arg) = once->cb; 3580 void (*cb)(int revents, void *arg) = once->cb;
2975 void *arg = once->arg; 3581 void *arg = once->arg;
2976 3582
2977 ev_io_stop (EV_A_ &once->io); 3583 ev_io_stop (EV_A_ &once->io);
2978 ev_timer_stop (EV_A_ &once->to); 3584 ev_timer_stop (EV_A_ &once->to);
2979 ev_free (once); 3585 ev_free (once);
2980 3586
2981 cb (revents, arg); 3587 cb (revents, arg);
2982} 3588}
2983 3589
2984static void 3590static void
2985once_cb_io (EV_P_ ev_io *w, int revents) 3591once_cb_io (EV_P_ ev_io *w, int revents)
2986{ 3592{
2987 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3593 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3594
3595 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2988} 3596}
2989 3597
2990static void 3598static void
2991once_cb_to (EV_P_ ev_timer *w, int revents) 3599once_cb_to (EV_P_ ev_timer *w, int revents)
2992{ 3600{
2993 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3601 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3602
3603 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2994} 3604}
2995 3605
2996void 3606void
2997ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3607ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2998{ 3608{
… …
3020 ev_timer_set (&once->to, timeout, 0.); 3630 ev_timer_set (&once->to, timeout, 0.);
3021 ev_timer_start (EV_A_ &once->to); 3631 ev_timer_start (EV_A_ &once->to);
3022 } 3632 }
3023} 3633}
3024 3634
3635/*****************************************************************************/
3636
3637#if EV_WALK_ENABLE
3638void
3639ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3640{
3641 int i, j;
3642 ev_watcher_list *wl, *wn;
3643
3644 if (types & (EV_IO | EV_EMBED))
3645 for (i = 0; i < anfdmax; ++i)
3646 for (wl = anfds [i].head; wl; )
3647 {
3648 wn = wl->next;
3649
3650#if EV_EMBED_ENABLE
3651 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3652 {
3653 if (types & EV_EMBED)
3654 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3655 }
3656 else
3657#endif
3658#if EV_USE_INOTIFY
3659 if (ev_cb ((ev_io *)wl) == infy_cb)
3660 ;
3661 else
3662#endif
3663 if ((ev_io *)wl != &pipe_w)
3664 if (types & EV_IO)
3665 cb (EV_A_ EV_IO, wl);
3666
3667 wl = wn;
3668 }
3669
3670 if (types & (EV_TIMER | EV_STAT))
3671 for (i = timercnt + HEAP0; i-- > HEAP0; )
3672#if EV_STAT_ENABLE
3673 /*TODO: timer is not always active*/
3674 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3675 {
3676 if (types & EV_STAT)
3677 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3678 }
3679 else
3680#endif
3681 if (types & EV_TIMER)
3682 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3683
3684#if EV_PERIODIC_ENABLE
3685 if (types & EV_PERIODIC)
3686 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3687 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3688#endif
3689
3690#if EV_IDLE_ENABLE
3691 if (types & EV_IDLE)
3692 for (j = NUMPRI; i--; )
3693 for (i = idlecnt [j]; i--; )
3694 cb (EV_A_ EV_IDLE, idles [j][i]);
3695#endif
3696
3697#if EV_FORK_ENABLE
3698 if (types & EV_FORK)
3699 for (i = forkcnt; i--; )
3700 if (ev_cb (forks [i]) != embed_fork_cb)
3701 cb (EV_A_ EV_FORK, forks [i]);
3702#endif
3703
3704#if EV_ASYNC_ENABLE
3705 if (types & EV_ASYNC)
3706 for (i = asynccnt; i--; )
3707 cb (EV_A_ EV_ASYNC, asyncs [i]);
3708#endif
3709
3710 if (types & EV_PREPARE)
3711 for (i = preparecnt; i--; )
3712#if EV_EMBED_ENABLE
3713 if (ev_cb (prepares [i]) != embed_prepare_cb)
3714#endif
3715 cb (EV_A_ EV_PREPARE, prepares [i]);
3716
3717 if (types & EV_CHECK)
3718 for (i = checkcnt; i--; )
3719 cb (EV_A_ EV_CHECK, checks [i]);
3720
3721 if (types & EV_SIGNAL)
3722 for (i = 0; i < EV_NSIG - 1; ++i)
3723 for (wl = signals [i].head; wl; )
3724 {
3725 wn = wl->next;
3726 cb (EV_A_ EV_SIGNAL, wl);
3727 wl = wn;
3728 }
3729
3730 if (types & EV_CHILD)
3731 for (i = EV_PID_HASHSIZE; i--; )
3732 for (wl = childs [i]; wl; )
3733 {
3734 wn = wl->next;
3735 cb (EV_A_ EV_CHILD, wl);
3736 wl = wn;
3737 }
3738/* EV_STAT 0x00001000 /* stat data changed */
3739/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3740}
3741#endif
3742
3025#if EV_MULTIPLICITY 3743#if EV_MULTIPLICITY
3026 #include "ev_wrap.h" 3744 #include "ev_wrap.h"
3027#endif 3745#endif
3028 3746
3029#ifdef __cplusplus 3747#ifdef __cplusplus

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