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Comparing libev/ev.c (file contents):
Revision 1.251 by root, Thu May 22 03:42:34 2008 UTC vs.
Revision 1.335 by root, Tue Mar 9 09:02:03 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 */
167 193
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
228
168#ifndef EV_USE_MONOTONIC 229#ifndef EV_USE_MONOTONIC
230# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
231# define EV_USE_MONOTONIC 1
232# else
169# define EV_USE_MONOTONIC 0 233# define EV_USE_MONOTONIC 0
234# endif
170#endif 235#endif
171 236
172#ifndef EV_USE_REALTIME 237#ifndef EV_USE_REALTIME
173# define EV_USE_REALTIME 0 238# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174#endif 239#endif
175 240
176#ifndef EV_USE_NANOSLEEP 241#ifndef EV_USE_NANOSLEEP
242# if _POSIX_C_SOURCE >= 199309L
243# define EV_USE_NANOSLEEP 1
244# else
177# define EV_USE_NANOSLEEP 0 245# define EV_USE_NANOSLEEP 0
246# endif
178#endif 247#endif
179 248
180#ifndef EV_USE_SELECT 249#ifndef EV_USE_SELECT
181# define EV_USE_SELECT 1 250# define EV_USE_SELECT 1
182#endif 251#endif
… …
235# else 304# else
236# define EV_USE_EVENTFD 0 305# define EV_USE_EVENTFD 0
237# endif 306# endif
238#endif 307#endif
239 308
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
240#if 0 /* debugging */ 317#if 0 /* debugging */
241# define EV_VERIFY 3 318# define EV_VERIFY 3
242# define EV_USE_4HEAP 1 319# define EV_USE_4HEAP 1
243# define EV_HEAP_CACHE_AT 1 320# define EV_HEAP_CACHE_AT 1
244#endif 321#endif
… …
253 330
254#ifndef EV_HEAP_CACHE_AT 331#ifndef EV_HEAP_CACHE_AT
255# define EV_HEAP_CACHE_AT !EV_MINIMAL 332# define EV_HEAP_CACHE_AT !EV_MINIMAL
256#endif 333#endif
257 334
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
258/* 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
259 356
260#ifndef CLOCK_MONOTONIC 357#ifndef CLOCK_MONOTONIC
261# undef EV_USE_MONOTONIC 358# undef EV_USE_MONOTONIC
262# define EV_USE_MONOTONIC 0 359# define EV_USE_MONOTONIC 0
263#endif 360#endif
… …
277# include <sys/select.h> 374# include <sys/select.h>
278# endif 375# endif
279#endif 376#endif
280 377
281#if EV_USE_INOTIFY 378#if EV_USE_INOTIFY
379# include <sys/utsname.h>
380# include <sys/statfs.h>
282# 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
283#endif 387#endif
284 388
285#if EV_SELECT_IS_WINSOCKET 389#if EV_SELECT_IS_WINSOCKET
286# include <winsock.h> 390# include <winsock.h>
287#endif 391#endif
288 392
289#if EV_USE_EVENTFD 393#if EV_USE_EVENTFD
290/* 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 */
291# 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
292# ifdef __cplusplus 406# ifdef __cplusplus
293extern "C" { 407extern "C" {
294# endif 408# endif
295int eventfd (unsigned int initval, int flags); 409int (eventfd) (unsigned int initval, int flags);
296# ifdef __cplusplus 410# ifdef __cplusplus
297} 411}
298# endif 412# endif
299#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
300 443
301/**/ 444/**/
302 445
303#if EV_VERIFY >= 3 446#if EV_VERIFY >= 3
304# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 447# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
… …
316 */ 459 */
317#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 460#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
318 461
319#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) */
320#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) */
321/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
322 464
323#if __GNUC__ >= 4 465#if __GNUC__ >= 4
324# define expect(expr,value) __builtin_expect ((expr),(value)) 466# define expect(expr,value) __builtin_expect ((expr),(value))
325# define noinline __attribute__ ((noinline)) 467# define noinline __attribute__ ((noinline))
326#else 468#else
… …
339# define inline_speed static noinline 481# define inline_speed static noinline
340#else 482#else
341# define inline_speed static inline 483# define inline_speed static inline
342#endif 484#endif
343 485
344#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
345#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 491# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
492#endif
346 493
347#define EMPTY /* required for microsofts broken pseudo-c compiler */ 494#define EMPTY /* required for microsofts broken pseudo-c compiler */
348#define EMPTY2(a,b) /* used to suppress some warnings */ 495#define EMPTY2(a,b) /* used to suppress some warnings */
349 496
350typedef ev_watcher *W; 497typedef ev_watcher *W;
… …
352typedef ev_watcher_time *WT; 499typedef ev_watcher_time *WT;
353 500
354#define ev_active(w) ((W)(w))->active 501#define ev_active(w) ((W)(w))->active
355#define ev_at(w) ((WT)(w))->at 502#define ev_at(w) ((WT)(w))->at
356 503
357#if EV_USE_MONOTONIC 504#if EV_USE_REALTIME
358/* 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 */
359/* 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
360static 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)
361#endif 522#endif
362 523
363#ifdef _WIN32 524#ifdef _WIN32
364# include "ev_win32.c" 525# include "ev_win32.c"
365#endif 526#endif
366 527
367/*****************************************************************************/ 528/*****************************************************************************/
368 529
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
369static void (*syserr_cb)(const char *msg); 538static void (*syserr_cb)(const char *msg);
370 539
371void 540void
372ev_set_syserr_cb (void (*cb)(const char *msg)) 541ev_set_syserr_cb (void (*cb)(const char *msg))
373{ 542{
374 syserr_cb = cb; 543 syserr_cb = cb;
375} 544}
376 545
377static void noinline 546static void noinline
378syserr (const char *msg) 547ev_syserr (const char *msg)
379{ 548{
380 if (!msg) 549 if (!msg)
381 msg = "(libev) system error"; 550 msg = "(libev) system error";
382 551
383 if (syserr_cb) 552 if (syserr_cb)
384 syserr_cb (msg); 553 syserr_cb (msg);
385 else 554 else
386 { 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
387 perror (msg); 564 perror (msg);
565#endif
388 abort (); 566 abort ();
389 } 567 }
390} 568}
391 569
392static void * 570static void *
393ev_realloc_emul (void *ptr, long size) 571ev_realloc_emul (void *ptr, long size)
394{ 572{
573#if __GLIBC__
574 return realloc (ptr, size);
575#else
395 /* some systems, notably openbsd and darwin, fail to properly 576 /* some systems, notably openbsd and darwin, fail to properly
396 * implement realloc (x, 0) (as required by both ansi c-98 and 577 * implement realloc (x, 0) (as required by both ansi c-89 and
397 * the single unix specification, so work around them here. 578 * the single unix specification, so work around them here.
398 */ 579 */
399 580
400 if (size) 581 if (size)
401 return realloc (ptr, size); 582 return realloc (ptr, size);
402 583
403 free (ptr); 584 free (ptr);
404 return 0; 585 return 0;
586#endif
405} 587}
406 588
407static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 589static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
408 590
409void 591void
… …
417{ 599{
418 ptr = alloc (ptr, size); 600 ptr = alloc (ptr, size);
419 601
420 if (!ptr && size) 602 if (!ptr && size)
421 { 603 {
604#if EV_AVOID_STDIO
605 ev_printerr ("libev: memory allocation failed, aborting.\n");
606#else
422 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 607 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
608#endif
423 abort (); 609 abort ();
424 } 610 }
425 611
426 return ptr; 612 return ptr;
427} 613}
… …
429#define ev_malloc(size) ev_realloc (0, (size)) 615#define ev_malloc(size) ev_realloc (0, (size))
430#define ev_free(ptr) ev_realloc ((ptr), 0) 616#define ev_free(ptr) ev_realloc ((ptr), 0)
431 617
432/*****************************************************************************/ 618/*****************************************************************************/
433 619
620/* set in reify when reification needed */
621#define EV_ANFD_REIFY 1
622
623/* file descriptor info structure */
434typedef struct 624typedef struct
435{ 625{
436 WL head; 626 WL head;
437 unsigned char events; 627 unsigned char events; /* the events watched for */
628 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
629 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
438 unsigned char reify; 630 unsigned char unused;
631#if EV_USE_EPOLL
632 unsigned int egen; /* generation counter to counter epoll bugs */
633#endif
439#if EV_SELECT_IS_WINSOCKET 634#if EV_SELECT_IS_WINSOCKET
440 SOCKET handle; 635 SOCKET handle;
441#endif 636#endif
442} ANFD; 637} ANFD;
443 638
639/* stores the pending event set for a given watcher */
444typedef struct 640typedef struct
445{ 641{
446 W w; 642 W w;
447 int events; 643 int events; /* the pending event set for the given watcher */
448} ANPENDING; 644} ANPENDING;
449 645
450#if EV_USE_INOTIFY 646#if EV_USE_INOTIFY
451/* hash table entry per inotify-id */ 647/* hash table entry per inotify-id */
452typedef struct 648typedef struct
… …
455} ANFS; 651} ANFS;
456#endif 652#endif
457 653
458/* Heap Entry */ 654/* Heap Entry */
459#if EV_HEAP_CACHE_AT 655#if EV_HEAP_CACHE_AT
656 /* a heap element */
460 typedef struct { 657 typedef struct {
461 ev_tstamp at; 658 ev_tstamp at;
462 WT w; 659 WT w;
463 } ANHE; 660 } ANHE;
464 661
465 #define ANHE_w(he) (he).w /* access watcher, read-write */ 662 #define ANHE_w(he) (he).w /* access watcher, read-write */
466 #define ANHE_at(he) (he).at /* access cached at, read-only */ 663 #define ANHE_at(he) (he).at /* access cached at, read-only */
467 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 664 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
468#else 665#else
666 /* a heap element */
469 typedef WT ANHE; 667 typedef WT ANHE;
470 668
471 #define ANHE_w(he) (he) 669 #define ANHE_w(he) (he)
472 #define ANHE_at(he) (he)->at 670 #define ANHE_at(he) (he)->at
473 #define ANHE_at_cache(he) 671 #define ANHE_at_cache(he)
… …
497 695
498 static int ev_default_loop_ptr; 696 static int ev_default_loop_ptr;
499 697
500#endif 698#endif
501 699
700#if EV_MINIMAL < 2
701# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
702# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
703# define EV_INVOKE_PENDING invoke_cb (EV_A)
704#else
705# define EV_RELEASE_CB (void)0
706# define EV_ACQUIRE_CB (void)0
707# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
708#endif
709
710#define EVUNLOOP_RECURSE 0x80
711
502/*****************************************************************************/ 712/*****************************************************************************/
503 713
714#ifndef EV_HAVE_EV_TIME
504ev_tstamp 715ev_tstamp
505ev_time (void) 716ev_time (void)
506{ 717{
507#if EV_USE_REALTIME 718#if EV_USE_REALTIME
719 if (expect_true (have_realtime))
720 {
508 struct timespec ts; 721 struct timespec ts;
509 clock_gettime (CLOCK_REALTIME, &ts); 722 clock_gettime (CLOCK_REALTIME, &ts);
510 return ts.tv_sec + ts.tv_nsec * 1e-9; 723 return ts.tv_sec + ts.tv_nsec * 1e-9;
511#else 724 }
725#endif
726
512 struct timeval tv; 727 struct timeval tv;
513 gettimeofday (&tv, 0); 728 gettimeofday (&tv, 0);
514 return tv.tv_sec + tv.tv_usec * 1e-6; 729 return tv.tv_sec + tv.tv_usec * 1e-6;
515#endif
516} 730}
731#endif
517 732
518ev_tstamp inline_size 733inline_size ev_tstamp
519get_clock (void) 734get_clock (void)
520{ 735{
521#if EV_USE_MONOTONIC 736#if EV_USE_MONOTONIC
522 if (expect_true (have_monotonic)) 737 if (expect_true (have_monotonic))
523 { 738 {
… …
556 struct timeval tv; 771 struct timeval tv;
557 772
558 tv.tv_sec = (time_t)delay; 773 tv.tv_sec = (time_t)delay;
559 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 774 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
560 775
776 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
777 /* something not guaranteed by newer posix versions, but guaranteed */
778 /* by older ones */
561 select (0, 0, 0, 0, &tv); 779 select (0, 0, 0, 0, &tv);
562#endif 780#endif
563 } 781 }
564} 782}
565 783
566/*****************************************************************************/ 784/*****************************************************************************/
567 785
568#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 786#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
569 787
570int inline_size 788/* find a suitable new size for the given array, */
789/* hopefully by rounding to a ncie-to-malloc size */
790inline_size int
571array_nextsize (int elem, int cur, int cnt) 791array_nextsize (int elem, int cur, int cnt)
572{ 792{
573 int ncur = cur + 1; 793 int ncur = cur + 1;
574 794
575 do 795 do
… …
592array_realloc (int elem, void *base, int *cur, int cnt) 812array_realloc (int elem, void *base, int *cur, int cnt)
593{ 813{
594 *cur = array_nextsize (elem, *cur, cnt); 814 *cur = array_nextsize (elem, *cur, cnt);
595 return ev_realloc (base, elem * *cur); 815 return ev_realloc (base, elem * *cur);
596} 816}
817
818#define array_init_zero(base,count) \
819 memset ((void *)(base), 0, sizeof (*(base)) * (count))
597 820
598#define array_needsize(type,base,cur,cnt,init) \ 821#define array_needsize(type,base,cur,cnt,init) \
599 if (expect_false ((cnt) > (cur))) \ 822 if (expect_false ((cnt) > (cur))) \
600 { \ 823 { \
601 int ocur_ = (cur); \ 824 int ocur_ = (cur); \
… …
613 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 836 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
614 } 837 }
615#endif 838#endif
616 839
617#define array_free(stem, idx) \ 840#define array_free(stem, idx) \
618 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 841 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
619 842
620/*****************************************************************************/ 843/*****************************************************************************/
844
845/* dummy callback for pending events */
846static void noinline
847pendingcb (EV_P_ ev_prepare *w, int revents)
848{
849}
621 850
622void noinline 851void noinline
623ev_feed_event (EV_P_ void *w, int revents) 852ev_feed_event (EV_P_ void *w, int revents)
624{ 853{
625 W w_ = (W)w; 854 W w_ = (W)w;
… …
634 pendings [pri][w_->pending - 1].w = w_; 863 pendings [pri][w_->pending - 1].w = w_;
635 pendings [pri][w_->pending - 1].events = revents; 864 pendings [pri][w_->pending - 1].events = revents;
636 } 865 }
637} 866}
638 867
639void inline_speed 868inline_speed void
869feed_reverse (EV_P_ W w)
870{
871 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
872 rfeeds [rfeedcnt++] = w;
873}
874
875inline_size void
876feed_reverse_done (EV_P_ int revents)
877{
878 do
879 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
880 while (rfeedcnt);
881}
882
883inline_speed void
640queue_events (EV_P_ W *events, int eventcnt, int type) 884queue_events (EV_P_ W *events, int eventcnt, int type)
641{ 885{
642 int i; 886 int i;
643 887
644 for (i = 0; i < eventcnt; ++i) 888 for (i = 0; i < eventcnt; ++i)
645 ev_feed_event (EV_A_ events [i], type); 889 ev_feed_event (EV_A_ events [i], type);
646} 890}
647 891
648/*****************************************************************************/ 892/*****************************************************************************/
649 893
650void inline_size 894inline_speed void
651anfds_init (ANFD *base, int count)
652{
653 while (count--)
654 {
655 base->head = 0;
656 base->events = EV_NONE;
657 base->reify = 0;
658
659 ++base;
660 }
661}
662
663void inline_speed
664fd_event (EV_P_ int fd, int revents) 895fd_event_nc (EV_P_ int fd, int revents)
665{ 896{
666 ANFD *anfd = anfds + fd; 897 ANFD *anfd = anfds + fd;
667 ev_io *w; 898 ev_io *w;
668 899
669 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 900 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
673 if (ev) 904 if (ev)
674 ev_feed_event (EV_A_ (W)w, ev); 905 ev_feed_event (EV_A_ (W)w, ev);
675 } 906 }
676} 907}
677 908
909/* do not submit kernel events for fds that have reify set */
910/* because that means they changed while we were polling for new events */
911inline_speed void
912fd_event (EV_P_ int fd, int revents)
913{
914 ANFD *anfd = anfds + fd;
915
916 if (expect_true (!anfd->reify))
917 fd_event_nc (EV_A_ fd, revents);
918}
919
678void 920void
679ev_feed_fd_event (EV_P_ int fd, int revents) 921ev_feed_fd_event (EV_P_ int fd, int revents)
680{ 922{
681 if (fd >= 0 && fd < anfdmax) 923 if (fd >= 0 && fd < anfdmax)
682 fd_event (EV_A_ fd, revents); 924 fd_event_nc (EV_A_ fd, revents);
683} 925}
684 926
685void inline_size 927/* make sure the external fd watch events are in-sync */
928/* with the kernel/libev internal state */
929inline_size void
686fd_reify (EV_P) 930fd_reify (EV_P)
687{ 931{
688 int i; 932 int i;
689 933
690 for (i = 0; i < fdchangecnt; ++i) 934 for (i = 0; i < fdchangecnt; ++i)
… …
699 events |= (unsigned char)w->events; 943 events |= (unsigned char)w->events;
700 944
701#if EV_SELECT_IS_WINSOCKET 945#if EV_SELECT_IS_WINSOCKET
702 if (events) 946 if (events)
703 { 947 {
704 unsigned long argp; 948 unsigned long arg;
705 #ifdef EV_FD_TO_WIN32_HANDLE
706 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 949 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
707 #else
708 anfd->handle = _get_osfhandle (fd);
709 #endif
710 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 950 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
711 } 951 }
712#endif 952#endif
713 953
714 { 954 {
715 unsigned char o_events = anfd->events; 955 unsigned char o_events = anfd->events;
716 unsigned char o_reify = anfd->reify; 956 unsigned char o_reify = anfd->reify;
717 957
718 anfd->reify = 0; 958 anfd->reify = 0;
719 anfd->events = events; 959 anfd->events = events;
720 960
721 if (o_events != events || o_reify & EV_IOFDSET) 961 if (o_events != events || o_reify & EV__IOFDSET)
722 backend_modify (EV_A_ fd, o_events, events); 962 backend_modify (EV_A_ fd, o_events, events);
723 } 963 }
724 } 964 }
725 965
726 fdchangecnt = 0; 966 fdchangecnt = 0;
727} 967}
728 968
729void inline_size 969/* something about the given fd changed */
970inline_size void
730fd_change (EV_P_ int fd, int flags) 971fd_change (EV_P_ int fd, int flags)
731{ 972{
732 unsigned char reify = anfds [fd].reify; 973 unsigned char reify = anfds [fd].reify;
733 anfds [fd].reify |= flags; 974 anfds [fd].reify |= flags;
734 975
… …
738 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 979 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
739 fdchanges [fdchangecnt - 1] = fd; 980 fdchanges [fdchangecnt - 1] = fd;
740 } 981 }
741} 982}
742 983
743void inline_speed 984/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
985inline_speed void
744fd_kill (EV_P_ int fd) 986fd_kill (EV_P_ int fd)
745{ 987{
746 ev_io *w; 988 ev_io *w;
747 989
748 while ((w = (ev_io *)anfds [fd].head)) 990 while ((w = (ev_io *)anfds [fd].head))
… …
750 ev_io_stop (EV_A_ w); 992 ev_io_stop (EV_A_ w);
751 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 993 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
752 } 994 }
753} 995}
754 996
755int inline_size 997/* check whether the given fd is atcually valid, for error recovery */
998inline_size int
756fd_valid (int fd) 999fd_valid (int fd)
757{ 1000{
758#ifdef _WIN32 1001#ifdef _WIN32
759 return _get_osfhandle (fd) != -1; 1002 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
760#else 1003#else
761 return fcntl (fd, F_GETFD) != -1; 1004 return fcntl (fd, F_GETFD) != -1;
762#endif 1005#endif
763} 1006}
764 1007
… …
768{ 1011{
769 int fd; 1012 int fd;
770 1013
771 for (fd = 0; fd < anfdmax; ++fd) 1014 for (fd = 0; fd < anfdmax; ++fd)
772 if (anfds [fd].events) 1015 if (anfds [fd].events)
773 if (!fd_valid (fd) == -1 && errno == EBADF) 1016 if (!fd_valid (fd) && errno == EBADF)
774 fd_kill (EV_A_ fd); 1017 fd_kill (EV_A_ fd);
775} 1018}
776 1019
777/* called on ENOMEM in select/poll to kill some fds and retry */ 1020/* called on ENOMEM in select/poll to kill some fds and retry */
778static void noinline 1021static void noinline
… …
782 1025
783 for (fd = anfdmax; fd--; ) 1026 for (fd = anfdmax; fd--; )
784 if (anfds [fd].events) 1027 if (anfds [fd].events)
785 { 1028 {
786 fd_kill (EV_A_ fd); 1029 fd_kill (EV_A_ fd);
787 return; 1030 break;
788 } 1031 }
789} 1032}
790 1033
791/* usually called after fork if backend needs to re-arm all fds from scratch */ 1034/* usually called after fork if backend needs to re-arm all fds from scratch */
792static void noinline 1035static void noinline
… …
796 1039
797 for (fd = 0; fd < anfdmax; ++fd) 1040 for (fd = 0; fd < anfdmax; ++fd)
798 if (anfds [fd].events) 1041 if (anfds [fd].events)
799 { 1042 {
800 anfds [fd].events = 0; 1043 anfds [fd].events = 0;
1044 anfds [fd].emask = 0;
801 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1045 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
802 } 1046 }
803} 1047}
804 1048
805/*****************************************************************************/ 1049/*****************************************************************************/
806 1050
… …
822#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1066#define HEAP0 (DHEAP - 1) /* index of first element in heap */
823#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1067#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
824#define UPHEAP_DONE(p,k) ((p) == (k)) 1068#define UPHEAP_DONE(p,k) ((p) == (k))
825 1069
826/* away from the root */ 1070/* away from the root */
827void inline_speed 1071inline_speed void
828downheap (ANHE *heap, int N, int k) 1072downheap (ANHE *heap, int N, int k)
829{ 1073{
830 ANHE he = heap [k]; 1074 ANHE he = heap [k];
831 ANHE *E = heap + N + HEAP0; 1075 ANHE *E = heap + N + HEAP0;
832 1076
… …
872#define HEAP0 1 1116#define HEAP0 1
873#define HPARENT(k) ((k) >> 1) 1117#define HPARENT(k) ((k) >> 1)
874#define UPHEAP_DONE(p,k) (!(p)) 1118#define UPHEAP_DONE(p,k) (!(p))
875 1119
876/* away from the root */ 1120/* away from the root */
877void inline_speed 1121inline_speed void
878downheap (ANHE *heap, int N, int k) 1122downheap (ANHE *heap, int N, int k)
879{ 1123{
880 ANHE he = heap [k]; 1124 ANHE he = heap [k];
881 1125
882 for (;;) 1126 for (;;)
883 { 1127 {
884 int c = k << 1; 1128 int c = k << 1;
885 1129
886 if (c > N + HEAP0 - 1) 1130 if (c >= N + HEAP0)
887 break; 1131 break;
888 1132
889 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1133 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
890 ? 1 : 0; 1134 ? 1 : 0;
891 1135
… …
902 ev_active (ANHE_w (he)) = k; 1146 ev_active (ANHE_w (he)) = k;
903} 1147}
904#endif 1148#endif
905 1149
906/* towards the root */ 1150/* towards the root */
907void inline_speed 1151inline_speed void
908upheap (ANHE *heap, int k) 1152upheap (ANHE *heap, int k)
909{ 1153{
910 ANHE he = heap [k]; 1154 ANHE he = heap [k];
911 1155
912 for (;;) 1156 for (;;)
… …
923 1167
924 heap [k] = he; 1168 heap [k] = he;
925 ev_active (ANHE_w (he)) = k; 1169 ev_active (ANHE_w (he)) = k;
926} 1170}
927 1171
928void inline_size 1172/* move an element suitably so it is in a correct place */
1173inline_size void
929adjustheap (ANHE *heap, int N, int k) 1174adjustheap (ANHE *heap, int N, int k)
930{ 1175{
931 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1176 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
932 upheap (heap, k); 1177 upheap (heap, k);
933 else 1178 else
934 downheap (heap, N, k); 1179 downheap (heap, N, k);
935} 1180}
936 1181
937/* rebuild the heap: this function is used only once and executed rarely */ 1182/* rebuild the heap: this function is used only once and executed rarely */
938void inline_size 1183inline_size void
939reheap (ANHE *heap, int N) 1184reheap (ANHE *heap, int N)
940{ 1185{
941 int i; 1186 int i;
942 1187
943 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1188 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
946 upheap (heap, i + HEAP0); 1191 upheap (heap, i + HEAP0);
947} 1192}
948 1193
949/*****************************************************************************/ 1194/*****************************************************************************/
950 1195
1196/* associate signal watchers to a signal signal */
951typedef struct 1197typedef struct
952{ 1198{
1199 EV_ATOMIC_T pending;
1200#if EV_MULTIPLICITY
1201 EV_P;
1202#endif
953 WL head; 1203 WL head;
954 EV_ATOMIC_T gotsig;
955} ANSIG; 1204} ANSIG;
956 1205
957static ANSIG *signals; 1206static ANSIG signals [EV_NSIG - 1];
958static int signalmax;
959
960static EV_ATOMIC_T gotsig;
961
962void inline_size
963signals_init (ANSIG *base, int count)
964{
965 while (count--)
966 {
967 base->head = 0;
968 base->gotsig = 0;
969
970 ++base;
971 }
972}
973 1207
974/*****************************************************************************/ 1208/*****************************************************************************/
975 1209
976void inline_speed 1210/* used to prepare libev internal fd's */
1211/* this is not fork-safe */
1212inline_speed void
977fd_intern (int fd) 1213fd_intern (int fd)
978{ 1214{
979#ifdef _WIN32 1215#ifdef _WIN32
980 int arg = 1; 1216 unsigned long arg = 1;
981 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1217 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
982#else 1218#else
983 fcntl (fd, F_SETFD, FD_CLOEXEC); 1219 fcntl (fd, F_SETFD, FD_CLOEXEC);
984 fcntl (fd, F_SETFL, O_NONBLOCK); 1220 fcntl (fd, F_SETFL, O_NONBLOCK);
985#endif 1221#endif
986} 1222}
987 1223
988static void noinline 1224static void noinline
989evpipe_init (EV_P) 1225evpipe_init (EV_P)
990{ 1226{
991 if (!ev_is_active (&pipeev)) 1227 if (!ev_is_active (&pipe_w))
992 { 1228 {
993#if EV_USE_EVENTFD 1229#if EV_USE_EVENTFD
1230 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1231 if (evfd < 0 && errno == EINVAL)
994 if ((evfd = eventfd (0, 0)) >= 0) 1232 evfd = eventfd (0, 0);
1233
1234 if (evfd >= 0)
995 { 1235 {
996 evpipe [0] = -1; 1236 evpipe [0] = -1;
997 fd_intern (evfd); 1237 fd_intern (evfd); /* doing it twice doesn't hurt */
998 ev_io_set (&pipeev, evfd, EV_READ); 1238 ev_io_set (&pipe_w, evfd, EV_READ);
999 } 1239 }
1000 else 1240 else
1001#endif 1241#endif
1002 { 1242 {
1003 while (pipe (evpipe)) 1243 while (pipe (evpipe))
1004 syserr ("(libev) error creating signal/async pipe"); 1244 ev_syserr ("(libev) error creating signal/async pipe");
1005 1245
1006 fd_intern (evpipe [0]); 1246 fd_intern (evpipe [0]);
1007 fd_intern (evpipe [1]); 1247 fd_intern (evpipe [1]);
1008 ev_io_set (&pipeev, evpipe [0], EV_READ); 1248 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1009 } 1249 }
1010 1250
1011 ev_io_start (EV_A_ &pipeev); 1251 ev_io_start (EV_A_ &pipe_w);
1012 ev_unref (EV_A); /* watcher should not keep loop alive */ 1252 ev_unref (EV_A); /* watcher should not keep loop alive */
1013 } 1253 }
1014} 1254}
1015 1255
1016void inline_size 1256inline_size void
1017evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1257evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1018{ 1258{
1019 if (!*flag) 1259 if (!*flag)
1020 { 1260 {
1021 int old_errno = errno; /* save errno because write might clobber it */ 1261 int old_errno = errno; /* save errno because write might clobber it */
… …
1034 1274
1035 errno = old_errno; 1275 errno = old_errno;
1036 } 1276 }
1037} 1277}
1038 1278
1279/* called whenever the libev signal pipe */
1280/* got some events (signal, async) */
1039static void 1281static void
1040pipecb (EV_P_ ev_io *iow, int revents) 1282pipecb (EV_P_ ev_io *iow, int revents)
1041{ 1283{
1284 int i;
1285
1042#if EV_USE_EVENTFD 1286#if EV_USE_EVENTFD
1043 if (evfd >= 0) 1287 if (evfd >= 0)
1044 { 1288 {
1045 uint64_t counter; 1289 uint64_t counter;
1046 read (evfd, &counter, sizeof (uint64_t)); 1290 read (evfd, &counter, sizeof (uint64_t));
… …
1050 { 1294 {
1051 char dummy; 1295 char dummy;
1052 read (evpipe [0], &dummy, 1); 1296 read (evpipe [0], &dummy, 1);
1053 } 1297 }
1054 1298
1055 if (gotsig && ev_is_default_loop (EV_A)) 1299 if (sig_pending)
1056 { 1300 {
1057 int signum; 1301 sig_pending = 0;
1058 gotsig = 0;
1059 1302
1060 for (signum = signalmax; signum--; ) 1303 for (i = EV_NSIG - 1; i--; )
1061 if (signals [signum].gotsig) 1304 if (expect_false (signals [i].pending))
1062 ev_feed_signal_event (EV_A_ signum + 1); 1305 ev_feed_signal_event (EV_A_ i + 1);
1063 } 1306 }
1064 1307
1065#if EV_ASYNC_ENABLE 1308#if EV_ASYNC_ENABLE
1066 if (gotasync) 1309 if (async_pending)
1067 { 1310 {
1068 int i; 1311 async_pending = 0;
1069 gotasync = 0;
1070 1312
1071 for (i = asynccnt; i--; ) 1313 for (i = asynccnt; i--; )
1072 if (asyncs [i]->sent) 1314 if (asyncs [i]->sent)
1073 { 1315 {
1074 asyncs [i]->sent = 0; 1316 asyncs [i]->sent = 0;
… …
1082 1324
1083static void 1325static void
1084ev_sighandler (int signum) 1326ev_sighandler (int signum)
1085{ 1327{
1086#if EV_MULTIPLICITY 1328#if EV_MULTIPLICITY
1087 struct ev_loop *loop = &default_loop_struct; 1329 EV_P = signals [signum - 1].loop;
1088#endif 1330#endif
1089 1331
1090#if _WIN32 1332#ifdef _WIN32
1091 signal (signum, ev_sighandler); 1333 signal (signum, ev_sighandler);
1092#endif 1334#endif
1093 1335
1094 signals [signum - 1].gotsig = 1; 1336 signals [signum - 1].pending = 1;
1095 evpipe_write (EV_A_ &gotsig); 1337 evpipe_write (EV_A_ &sig_pending);
1096} 1338}
1097 1339
1098void noinline 1340void noinline
1099ev_feed_signal_event (EV_P_ int signum) 1341ev_feed_signal_event (EV_P_ int signum)
1100{ 1342{
1101 WL w; 1343 WL w;
1102 1344
1345 if (expect_false (signum <= 0 || signum > EV_NSIG))
1346 return;
1347
1348 --signum;
1349
1103#if EV_MULTIPLICITY 1350#if EV_MULTIPLICITY
1104 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1351 /* it is permissible to try to feed a signal to the wrong loop */
1105#endif 1352 /* or, likely more useful, feeding a signal nobody is waiting for */
1106 1353
1107 --signum; 1354 if (expect_false (signals [signum].loop != EV_A))
1108
1109 if (signum < 0 || signum >= signalmax)
1110 return; 1355 return;
1356#endif
1111 1357
1112 signals [signum].gotsig = 0; 1358 signals [signum].pending = 0;
1113 1359
1114 for (w = signals [signum].head; w; w = w->next) 1360 for (w = signals [signum].head; w; w = w->next)
1115 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1361 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1116} 1362}
1117 1363
1364#if EV_USE_SIGNALFD
1365static void
1366sigfdcb (EV_P_ ev_io *iow, int revents)
1367{
1368 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1369
1370 for (;;)
1371 {
1372 ssize_t res = read (sigfd, si, sizeof (si));
1373
1374 /* not ISO-C, as res might be -1, but works with SuS */
1375 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1376 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1377
1378 if (res < (ssize_t)sizeof (si))
1379 break;
1380 }
1381}
1382#endif
1383
1118/*****************************************************************************/ 1384/*****************************************************************************/
1119 1385
1120static WL childs [EV_PID_HASHSIZE]; 1386static WL childs [EV_PID_HASHSIZE];
1121 1387
1122#ifndef _WIN32 1388#ifndef _WIN32
… …
1125 1391
1126#ifndef WIFCONTINUED 1392#ifndef WIFCONTINUED
1127# define WIFCONTINUED(status) 0 1393# define WIFCONTINUED(status) 0
1128#endif 1394#endif
1129 1395
1130void inline_speed 1396/* handle a single child status event */
1397inline_speed void
1131child_reap (EV_P_ int chain, int pid, int status) 1398child_reap (EV_P_ int chain, int pid, int status)
1132{ 1399{
1133 ev_child *w; 1400 ev_child *w;
1134 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1401 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1135 1402
… …
1148 1415
1149#ifndef WCONTINUED 1416#ifndef WCONTINUED
1150# define WCONTINUED 0 1417# define WCONTINUED 0
1151#endif 1418#endif
1152 1419
1420/* called on sigchld etc., calls waitpid */
1153static void 1421static void
1154childcb (EV_P_ ev_signal *sw, int revents) 1422childcb (EV_P_ ev_signal *sw, int revents)
1155{ 1423{
1156 int pid, status; 1424 int pid, status;
1157 1425
… …
1238 /* kqueue is borked on everything but netbsd apparently */ 1506 /* kqueue is borked on everything but netbsd apparently */
1239 /* it usually doesn't work correctly on anything but sockets and pipes */ 1507 /* it usually doesn't work correctly on anything but sockets and pipes */
1240 flags &= ~EVBACKEND_KQUEUE; 1508 flags &= ~EVBACKEND_KQUEUE;
1241#endif 1509#endif
1242#ifdef __APPLE__ 1510#ifdef __APPLE__
1243 // flags &= ~EVBACKEND_KQUEUE; for documentation 1511 /* only select works correctly on that "unix-certified" platform */
1244 flags &= ~EVBACKEND_POLL; 1512 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1513 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1245#endif 1514#endif
1246 1515
1247 return flags; 1516 return flags;
1248} 1517}
1249 1518
… …
1263ev_backend (EV_P) 1532ev_backend (EV_P)
1264{ 1533{
1265 return backend; 1534 return backend;
1266} 1535}
1267 1536
1537#if EV_MINIMAL < 2
1268unsigned int 1538unsigned int
1269ev_loop_count (EV_P) 1539ev_loop_count (EV_P)
1270{ 1540{
1271 return loop_count; 1541 return loop_count;
1272} 1542}
1273 1543
1544unsigned int
1545ev_loop_depth (EV_P)
1546{
1547 return loop_depth;
1548}
1549
1274void 1550void
1275ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1551ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1276{ 1552{
1277 io_blocktime = interval; 1553 io_blocktime = interval;
1278} 1554}
… …
1281ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1557ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1282{ 1558{
1283 timeout_blocktime = interval; 1559 timeout_blocktime = interval;
1284} 1560}
1285 1561
1562void
1563ev_set_userdata (EV_P_ void *data)
1564{
1565 userdata = data;
1566}
1567
1568void *
1569ev_userdata (EV_P)
1570{
1571 return userdata;
1572}
1573
1574void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1575{
1576 invoke_cb = invoke_pending_cb;
1577}
1578
1579void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1580{
1581 release_cb = release;
1582 acquire_cb = acquire;
1583}
1584#endif
1585
1586/* initialise a loop structure, must be zero-initialised */
1286static void noinline 1587static void noinline
1287loop_init (EV_P_ unsigned int flags) 1588loop_init (EV_P_ unsigned int flags)
1288{ 1589{
1289 if (!backend) 1590 if (!backend)
1290 { 1591 {
1592#if EV_USE_REALTIME
1593 if (!have_realtime)
1594 {
1595 struct timespec ts;
1596
1597 if (!clock_gettime (CLOCK_REALTIME, &ts))
1598 have_realtime = 1;
1599 }
1600#endif
1601
1291#if EV_USE_MONOTONIC 1602#if EV_USE_MONOTONIC
1603 if (!have_monotonic)
1292 { 1604 {
1293 struct timespec ts; 1605 struct timespec ts;
1606
1294 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1607 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1295 have_monotonic = 1; 1608 have_monotonic = 1;
1296 } 1609 }
1297#endif 1610#endif
1611
1612 /* pid check not overridable via env */
1613#ifndef _WIN32
1614 if (flags & EVFLAG_FORKCHECK)
1615 curpid = getpid ();
1616#endif
1617
1618 if (!(flags & EVFLAG_NOENV)
1619 && !enable_secure ()
1620 && getenv ("LIBEV_FLAGS"))
1621 flags = atoi (getenv ("LIBEV_FLAGS"));
1298 1622
1299 ev_rt_now = ev_time (); 1623 ev_rt_now = ev_time ();
1300 mn_now = get_clock (); 1624 mn_now = get_clock ();
1301 now_floor = mn_now; 1625 now_floor = mn_now;
1302 rtmn_diff = ev_rt_now - mn_now; 1626 rtmn_diff = ev_rt_now - mn_now;
1627#if EV_MINIMAL < 2
1628 invoke_cb = ev_invoke_pending;
1629#endif
1303 1630
1304 io_blocktime = 0.; 1631 io_blocktime = 0.;
1305 timeout_blocktime = 0.; 1632 timeout_blocktime = 0.;
1306 backend = 0; 1633 backend = 0;
1307 backend_fd = -1; 1634 backend_fd = -1;
1308 gotasync = 0; 1635 sig_pending = 0;
1636#if EV_ASYNC_ENABLE
1637 async_pending = 0;
1638#endif
1309#if EV_USE_INOTIFY 1639#if EV_USE_INOTIFY
1310 fs_fd = -2; 1640 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1311#endif 1641#endif
1312 1642#if EV_USE_SIGNALFD
1313 /* pid check not overridable via env */ 1643 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1314#ifndef _WIN32
1315 if (flags & EVFLAG_FORKCHECK)
1316 curpid = getpid ();
1317#endif 1644#endif
1318
1319 if (!(flags & EVFLAG_NOENV)
1320 && !enable_secure ()
1321 && getenv ("LIBEV_FLAGS"))
1322 flags = atoi (getenv ("LIBEV_FLAGS"));
1323 1645
1324 if (!(flags & 0x0000ffffU)) 1646 if (!(flags & 0x0000ffffU))
1325 flags |= ev_recommended_backends (); 1647 flags |= ev_recommended_backends ();
1326 1648
1327#if EV_USE_PORT 1649#if EV_USE_PORT
… …
1338#endif 1660#endif
1339#if EV_USE_SELECT 1661#if EV_USE_SELECT
1340 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1662 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1341#endif 1663#endif
1342 1664
1665 ev_prepare_init (&pending_w, pendingcb);
1666
1343 ev_init (&pipeev, pipecb); 1667 ev_init (&pipe_w, pipecb);
1344 ev_set_priority (&pipeev, EV_MAXPRI); 1668 ev_set_priority (&pipe_w, EV_MAXPRI);
1345 } 1669 }
1346} 1670}
1347 1671
1672/* free up a loop structure */
1348static void noinline 1673static void noinline
1349loop_destroy (EV_P) 1674loop_destroy (EV_P)
1350{ 1675{
1351 int i; 1676 int i;
1352 1677
1353 if (ev_is_active (&pipeev)) 1678 if (ev_is_active (&pipe_w))
1354 { 1679 {
1355 ev_ref (EV_A); /* signal watcher */ 1680 /*ev_ref (EV_A);*/
1356 ev_io_stop (EV_A_ &pipeev); 1681 /*ev_io_stop (EV_A_ &pipe_w);*/
1357 1682
1358#if EV_USE_EVENTFD 1683#if EV_USE_EVENTFD
1359 if (evfd >= 0) 1684 if (evfd >= 0)
1360 close (evfd); 1685 close (evfd);
1361#endif 1686#endif
1362 1687
1363 if (evpipe [0] >= 0) 1688 if (evpipe [0] >= 0)
1364 { 1689 {
1365 close (evpipe [0]); 1690 EV_WIN32_CLOSE_FD (evpipe [0]);
1366 close (evpipe [1]); 1691 EV_WIN32_CLOSE_FD (evpipe [1]);
1367 } 1692 }
1368 } 1693 }
1694
1695#if EV_USE_SIGNALFD
1696 if (ev_is_active (&sigfd_w))
1697 close (sigfd);
1698#endif
1369 1699
1370#if EV_USE_INOTIFY 1700#if EV_USE_INOTIFY
1371 if (fs_fd >= 0) 1701 if (fs_fd >= 0)
1372 close (fs_fd); 1702 close (fs_fd);
1373#endif 1703#endif
… …
1397#if EV_IDLE_ENABLE 1727#if EV_IDLE_ENABLE
1398 array_free (idle, [i]); 1728 array_free (idle, [i]);
1399#endif 1729#endif
1400 } 1730 }
1401 1731
1402 ev_free (anfds); anfdmax = 0; 1732 ev_free (anfds); anfds = 0; anfdmax = 0;
1403 1733
1404 /* have to use the microsoft-never-gets-it-right macro */ 1734 /* have to use the microsoft-never-gets-it-right macro */
1735 array_free (rfeed, EMPTY);
1405 array_free (fdchange, EMPTY); 1736 array_free (fdchange, EMPTY);
1406 array_free (timer, EMPTY); 1737 array_free (timer, EMPTY);
1407#if EV_PERIODIC_ENABLE 1738#if EV_PERIODIC_ENABLE
1408 array_free (periodic, EMPTY); 1739 array_free (periodic, EMPTY);
1409#endif 1740#endif
… …
1418 1749
1419 backend = 0; 1750 backend = 0;
1420} 1751}
1421 1752
1422#if EV_USE_INOTIFY 1753#if EV_USE_INOTIFY
1423void inline_size infy_fork (EV_P); 1754inline_size void infy_fork (EV_P);
1424#endif 1755#endif
1425 1756
1426void inline_size 1757inline_size void
1427loop_fork (EV_P) 1758loop_fork (EV_P)
1428{ 1759{
1429#if EV_USE_PORT 1760#if EV_USE_PORT
1430 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1761 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1431#endif 1762#endif
… …
1437#endif 1768#endif
1438#if EV_USE_INOTIFY 1769#if EV_USE_INOTIFY
1439 infy_fork (EV_A); 1770 infy_fork (EV_A);
1440#endif 1771#endif
1441 1772
1442 if (ev_is_active (&pipeev)) 1773 if (ev_is_active (&pipe_w))
1443 { 1774 {
1444 /* this "locks" the handlers against writing to the pipe */ 1775 /* this "locks" the handlers against writing to the pipe */
1445 /* while we modify the fd vars */ 1776 /* while we modify the fd vars */
1446 gotsig = 1; 1777 sig_pending = 1;
1447#if EV_ASYNC_ENABLE 1778#if EV_ASYNC_ENABLE
1448 gotasync = 1; 1779 async_pending = 1;
1449#endif 1780#endif
1450 1781
1451 ev_ref (EV_A); 1782 ev_ref (EV_A);
1452 ev_io_stop (EV_A_ &pipeev); 1783 ev_io_stop (EV_A_ &pipe_w);
1453 1784
1454#if EV_USE_EVENTFD 1785#if EV_USE_EVENTFD
1455 if (evfd >= 0) 1786 if (evfd >= 0)
1456 close (evfd); 1787 close (evfd);
1457#endif 1788#endif
1458 1789
1459 if (evpipe [0] >= 0) 1790 if (evpipe [0] >= 0)
1460 { 1791 {
1461 close (evpipe [0]); 1792 EV_WIN32_CLOSE_FD (evpipe [0]);
1462 close (evpipe [1]); 1793 EV_WIN32_CLOSE_FD (evpipe [1]);
1463 } 1794 }
1464 1795
1465 evpipe_init (EV_A); 1796 evpipe_init (EV_A);
1466 /* now iterate over everything, in case we missed something */ 1797 /* now iterate over everything, in case we missed something */
1467 pipecb (EV_A_ &pipeev, EV_READ); 1798 pipecb (EV_A_ &pipe_w, EV_READ);
1468 } 1799 }
1469 1800
1470 postfork = 0; 1801 postfork = 0;
1471} 1802}
1472 1803
1473#if EV_MULTIPLICITY 1804#if EV_MULTIPLICITY
1474 1805
1475struct ev_loop * 1806struct ev_loop *
1476ev_loop_new (unsigned int flags) 1807ev_loop_new (unsigned int flags)
1477{ 1808{
1478 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1809 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1479 1810
1480 memset (loop, 0, sizeof (struct ev_loop)); 1811 memset (EV_A, 0, sizeof (struct ev_loop));
1481
1482 loop_init (EV_A_ flags); 1812 loop_init (EV_A_ flags);
1483 1813
1484 if (ev_backend (EV_A)) 1814 if (ev_backend (EV_A))
1485 return loop; 1815 return EV_A;
1486 1816
1487 return 0; 1817 return 0;
1488} 1818}
1489 1819
1490void 1820void
… …
1497void 1827void
1498ev_loop_fork (EV_P) 1828ev_loop_fork (EV_P)
1499{ 1829{
1500 postfork = 1; /* must be in line with ev_default_fork */ 1830 postfork = 1; /* must be in line with ev_default_fork */
1501} 1831}
1832#endif /* multiplicity */
1502 1833
1503#if EV_VERIFY 1834#if EV_VERIFY
1504void noinline 1835static void noinline
1505verify_watcher (EV_P_ W w) 1836verify_watcher (EV_P_ W w)
1506{ 1837{
1507 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 1838 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1508 1839
1509 if (w->pending) 1840 if (w->pending)
1510 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 1841 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1511} 1842}
1512 1843
1513static void noinline 1844static void noinline
1514verify_heap (EV_P_ ANHE *heap, int N) 1845verify_heap (EV_P_ ANHE *heap, int N)
1515{ 1846{
1516 int i; 1847 int i;
1517 1848
1518 for (i = HEAP0; i < N + HEAP0; ++i) 1849 for (i = HEAP0; i < N + HEAP0; ++i)
1519 { 1850 {
1520 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 1851 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1521 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 1852 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1522 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 1853 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1523 1854
1524 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 1855 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1525 } 1856 }
1526} 1857}
1527 1858
1528static void noinline 1859static void noinline
1529array_verify (EV_P_ W *ws, int cnt) 1860array_verify (EV_P_ W *ws, int cnt)
1530{ 1861{
1531 while (cnt--) 1862 while (cnt--)
1532 { 1863 {
1533 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1864 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1534 verify_watcher (EV_A_ ws [cnt]); 1865 verify_watcher (EV_A_ ws [cnt]);
1535 } 1866 }
1536} 1867}
1537#endif 1868#endif
1538 1869
1870#if EV_MINIMAL < 2
1539void 1871void
1540ev_loop_verify (EV_P) 1872ev_loop_verify (EV_P)
1541{ 1873{
1542#if EV_VERIFY 1874#if EV_VERIFY
1543 int i; 1875 int i;
… …
1545 1877
1546 assert (activecnt >= -1); 1878 assert (activecnt >= -1);
1547 1879
1548 assert (fdchangemax >= fdchangecnt); 1880 assert (fdchangemax >= fdchangecnt);
1549 for (i = 0; i < fdchangecnt; ++i) 1881 for (i = 0; i < fdchangecnt; ++i)
1550 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 1882 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1551 1883
1552 assert (anfdmax >= 0); 1884 assert (anfdmax >= 0);
1553 for (i = 0; i < anfdmax; ++i) 1885 for (i = 0; i < anfdmax; ++i)
1554 for (w = anfds [i].head; w; w = w->next) 1886 for (w = anfds [i].head; w; w = w->next)
1555 { 1887 {
1556 verify_watcher (EV_A_ (W)w); 1888 verify_watcher (EV_A_ (W)w);
1557 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 1889 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1558 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 1890 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1559 } 1891 }
1560 1892
1561 assert (timermax >= timercnt); 1893 assert (timermax >= timercnt);
1562 verify_heap (EV_A_ timers, timercnt); 1894 verify_heap (EV_A_ timers, timercnt);
1563 1895
… …
1568 1900
1569 for (i = NUMPRI; i--; ) 1901 for (i = NUMPRI; i--; )
1570 { 1902 {
1571 assert (pendingmax [i] >= pendingcnt [i]); 1903 assert (pendingmax [i] >= pendingcnt [i]);
1572#if EV_IDLE_ENABLE 1904#if EV_IDLE_ENABLE
1905 assert (idleall >= 0);
1573 assert (idlemax [i] >= idlecnt [i]); 1906 assert (idlemax [i] >= idlecnt [i]);
1574 array_verify (EV_A_ (W *)idles [i], idlecnt [i]); 1907 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1575#endif 1908#endif
1576 } 1909 }
1577 1910
… …
1591 assert (checkmax >= checkcnt); 1924 assert (checkmax >= checkcnt);
1592 array_verify (EV_A_ (W *)checks, checkcnt); 1925 array_verify (EV_A_ (W *)checks, checkcnt);
1593 1926
1594# if 0 1927# if 0
1595 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1928 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1596 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 1929 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1597# endif
1598#endif 1930# endif
1931#endif
1599} 1932}
1600 1933#endif
1601#endif /* multiplicity */
1602 1934
1603#if EV_MULTIPLICITY 1935#if EV_MULTIPLICITY
1604struct ev_loop * 1936struct ev_loop *
1605ev_default_loop_init (unsigned int flags) 1937ev_default_loop_init (unsigned int flags)
1606#else 1938#else
… …
1609#endif 1941#endif
1610{ 1942{
1611 if (!ev_default_loop_ptr) 1943 if (!ev_default_loop_ptr)
1612 { 1944 {
1613#if EV_MULTIPLICITY 1945#if EV_MULTIPLICITY
1614 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1946 EV_P = ev_default_loop_ptr = &default_loop_struct;
1615#else 1947#else
1616 ev_default_loop_ptr = 1; 1948 ev_default_loop_ptr = 1;
1617#endif 1949#endif
1618 1950
1619 loop_init (EV_A_ flags); 1951 loop_init (EV_A_ flags);
… …
1636 1968
1637void 1969void
1638ev_default_destroy (void) 1970ev_default_destroy (void)
1639{ 1971{
1640#if EV_MULTIPLICITY 1972#if EV_MULTIPLICITY
1641 struct ev_loop *loop = ev_default_loop_ptr; 1973 EV_P = ev_default_loop_ptr;
1642#endif 1974#endif
1975
1976 ev_default_loop_ptr = 0;
1643 1977
1644#ifndef _WIN32 1978#ifndef _WIN32
1645 ev_ref (EV_A); /* child watcher */ 1979 ev_ref (EV_A); /* child watcher */
1646 ev_signal_stop (EV_A_ &childev); 1980 ev_signal_stop (EV_A_ &childev);
1647#endif 1981#endif
… …
1651 1985
1652void 1986void
1653ev_default_fork (void) 1987ev_default_fork (void)
1654{ 1988{
1655#if EV_MULTIPLICITY 1989#if EV_MULTIPLICITY
1656 struct ev_loop *loop = ev_default_loop_ptr; 1990 EV_P = ev_default_loop_ptr;
1657#endif 1991#endif
1658 1992
1659 if (backend)
1660 postfork = 1; /* must be in line with ev_loop_fork */ 1993 postfork = 1; /* must be in line with ev_loop_fork */
1661} 1994}
1662 1995
1663/*****************************************************************************/ 1996/*****************************************************************************/
1664 1997
1665void 1998void
1666ev_invoke (EV_P_ void *w, int revents) 1999ev_invoke (EV_P_ void *w, int revents)
1667{ 2000{
1668 EV_CB_INVOKE ((W)w, revents); 2001 EV_CB_INVOKE ((W)w, revents);
1669} 2002}
1670 2003
1671void inline_speed 2004unsigned int
1672call_pending (EV_P) 2005ev_pending_count (EV_P)
2006{
2007 int pri;
2008 unsigned int count = 0;
2009
2010 for (pri = NUMPRI; pri--; )
2011 count += pendingcnt [pri];
2012
2013 return count;
2014}
2015
2016void noinline
2017ev_invoke_pending (EV_P)
1673{ 2018{
1674 int pri; 2019 int pri;
1675 2020
1676 for (pri = NUMPRI; pri--; ) 2021 for (pri = NUMPRI; pri--; )
1677 while (pendingcnt [pri]) 2022 while (pendingcnt [pri])
1678 { 2023 {
1679 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2024 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1680 2025
1681 if (expect_true (p->w))
1682 {
1683 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2026 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2027 /* ^ this is no longer true, as pending_w could be here */
1684 2028
1685 p->w->pending = 0; 2029 p->w->pending = 0;
1686 EV_CB_INVOKE (p->w, p->events); 2030 EV_CB_INVOKE (p->w, p->events);
1687 EV_FREQUENT_CHECK; 2031 EV_FREQUENT_CHECK;
1688 }
1689 } 2032 }
1690} 2033}
1691 2034
1692#if EV_IDLE_ENABLE 2035#if EV_IDLE_ENABLE
1693void inline_size 2036/* make idle watchers pending. this handles the "call-idle */
2037/* only when higher priorities are idle" logic */
2038inline_size void
1694idle_reify (EV_P) 2039idle_reify (EV_P)
1695{ 2040{
1696 if (expect_false (idleall)) 2041 if (expect_false (idleall))
1697 { 2042 {
1698 int pri; 2043 int pri;
… …
1710 } 2055 }
1711 } 2056 }
1712} 2057}
1713#endif 2058#endif
1714 2059
1715void inline_size 2060/* make timers pending */
2061inline_size void
1716timers_reify (EV_P) 2062timers_reify (EV_P)
1717{ 2063{
1718 EV_FREQUENT_CHECK; 2064 EV_FREQUENT_CHECK;
1719 2065
1720 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2066 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1721 { 2067 {
1722 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2068 do
1723
1724 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1725
1726 /* first reschedule or stop timer */
1727 if (w->repeat)
1728 { 2069 {
2070 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2071
2072 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2073
2074 /* first reschedule or stop timer */
2075 if (w->repeat)
2076 {
1729 ev_at (w) += w->repeat; 2077 ev_at (w) += w->repeat;
1730 if (ev_at (w) < mn_now) 2078 if (ev_at (w) < mn_now)
1731 ev_at (w) = mn_now; 2079 ev_at (w) = mn_now;
1732 2080
1733 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2081 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1734 2082
1735 ANHE_at_cache (timers [HEAP0]); 2083 ANHE_at_cache (timers [HEAP0]);
1736 downheap (timers, timercnt, HEAP0); 2084 downheap (timers, timercnt, HEAP0);
2085 }
2086 else
2087 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2088
2089 EV_FREQUENT_CHECK;
2090 feed_reverse (EV_A_ (W)w);
1737 } 2091 }
1738 else 2092 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1739 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1740 2093
1741 EV_FREQUENT_CHECK;
1742 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 2094 feed_reverse_done (EV_A_ EV_TIMEOUT);
1743 } 2095 }
1744} 2096}
1745 2097
1746#if EV_PERIODIC_ENABLE 2098#if EV_PERIODIC_ENABLE
1747void inline_size 2099/* make periodics pending */
2100inline_size void
1748periodics_reify (EV_P) 2101periodics_reify (EV_P)
1749{ 2102{
1750 EV_FREQUENT_CHECK; 2103 EV_FREQUENT_CHECK;
1751 2104
1752 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2105 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1753 { 2106 {
1754 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2107 int feed_count = 0;
1755 2108
1756 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2109 do
1757
1758 /* first reschedule or stop timer */
1759 if (w->reschedule_cb)
1760 { 2110 {
2111 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2112
2113 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2114
2115 /* first reschedule or stop timer */
2116 if (w->reschedule_cb)
2117 {
1761 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2118 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1762 2119
1763 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2120 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1764 2121
1765 ANHE_at_cache (periodics [HEAP0]); 2122 ANHE_at_cache (periodics [HEAP0]);
1766 downheap (periodics, periodiccnt, HEAP0); 2123 downheap (periodics, periodiccnt, HEAP0);
2124 }
2125 else if (w->interval)
2126 {
2127 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2128 /* if next trigger time is not sufficiently in the future, put it there */
2129 /* this might happen because of floating point inexactness */
2130 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2131 {
2132 ev_at (w) += w->interval;
2133
2134 /* if interval is unreasonably low we might still have a time in the past */
2135 /* so correct this. this will make the periodic very inexact, but the user */
2136 /* has effectively asked to get triggered more often than possible */
2137 if (ev_at (w) < ev_rt_now)
2138 ev_at (w) = ev_rt_now;
2139 }
2140
2141 ANHE_at_cache (periodics [HEAP0]);
2142 downheap (periodics, periodiccnt, HEAP0);
2143 }
2144 else
2145 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2146
2147 EV_FREQUENT_CHECK;
2148 feed_reverse (EV_A_ (W)w);
1767 } 2149 }
1768 else if (w->interval) 2150 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1769 {
1770 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1771 /* if next trigger time is not sufficiently in the future, put it there */
1772 /* this might happen because of floating point inexactness */
1773 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1774 {
1775 ev_at (w) += w->interval;
1776 2151
1777 /* if interval is unreasonably low we might still have a time in the past */
1778 /* so correct this. this will make the periodic very inexact, but the user */
1779 /* has effectively asked to get triggered more often than possible */
1780 if (ev_at (w) < ev_rt_now)
1781 ev_at (w) = ev_rt_now;
1782 }
1783
1784 ANHE_at_cache (periodics [HEAP0]);
1785 downheap (periodics, periodiccnt, HEAP0);
1786 }
1787 else
1788 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1789
1790 EV_FREQUENT_CHECK;
1791 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2152 feed_reverse_done (EV_A_ EV_PERIODIC);
1792 } 2153 }
1793} 2154}
1794 2155
2156/* simply recalculate all periodics */
2157/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1795static void noinline 2158static void noinline
1796periodics_reschedule (EV_P) 2159periodics_reschedule (EV_P)
1797{ 2160{
1798 int i; 2161 int i;
1799 2162
… …
1812 2175
1813 reheap (periodics, periodiccnt); 2176 reheap (periodics, periodiccnt);
1814} 2177}
1815#endif 2178#endif
1816 2179
1817void inline_speed 2180/* adjust all timers by a given offset */
2181static void noinline
2182timers_reschedule (EV_P_ ev_tstamp adjust)
2183{
2184 int i;
2185
2186 for (i = 0; i < timercnt; ++i)
2187 {
2188 ANHE *he = timers + i + HEAP0;
2189 ANHE_w (*he)->at += adjust;
2190 ANHE_at_cache (*he);
2191 }
2192}
2193
2194/* fetch new monotonic and realtime times from the kernel */
2195/* also detect if there was a timejump, and act accordingly */
2196inline_speed void
1818time_update (EV_P_ ev_tstamp max_block) 2197time_update (EV_P_ ev_tstamp max_block)
1819{ 2198{
1820 int i;
1821
1822#if EV_USE_MONOTONIC 2199#if EV_USE_MONOTONIC
1823 if (expect_true (have_monotonic)) 2200 if (expect_true (have_monotonic))
1824 { 2201 {
2202 int i;
1825 ev_tstamp odiff = rtmn_diff; 2203 ev_tstamp odiff = rtmn_diff;
1826 2204
1827 mn_now = get_clock (); 2205 mn_now = get_clock ();
1828 2206
1829 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2207 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1855 ev_rt_now = ev_time (); 2233 ev_rt_now = ev_time ();
1856 mn_now = get_clock (); 2234 mn_now = get_clock ();
1857 now_floor = mn_now; 2235 now_floor = mn_now;
1858 } 2236 }
1859 2237
2238 /* no timer adjustment, as the monotonic clock doesn't jump */
2239 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1860# if EV_PERIODIC_ENABLE 2240# if EV_PERIODIC_ENABLE
1861 periodics_reschedule (EV_A); 2241 periodics_reschedule (EV_A);
1862# endif 2242# endif
1863 /* no timer adjustment, as the monotonic clock doesn't jump */
1864 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1865 } 2243 }
1866 else 2244 else
1867#endif 2245#endif
1868 { 2246 {
1869 ev_rt_now = ev_time (); 2247 ev_rt_now = ev_time ();
1870 2248
1871 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2249 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1872 { 2250 {
2251 /* adjust timers. this is easy, as the offset is the same for all of them */
2252 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1873#if EV_PERIODIC_ENABLE 2253#if EV_PERIODIC_ENABLE
1874 periodics_reschedule (EV_A); 2254 periodics_reschedule (EV_A);
1875#endif 2255#endif
1876 /* adjust timers. this is easy, as the offset is the same for all of them */
1877 for (i = 0; i < timercnt; ++i)
1878 {
1879 ANHE *he = timers + i + HEAP0;
1880 ANHE_w (*he)->at += ev_rt_now - mn_now;
1881 ANHE_at_cache (*he);
1882 }
1883 } 2256 }
1884 2257
1885 mn_now = ev_rt_now; 2258 mn_now = ev_rt_now;
1886 } 2259 }
1887} 2260}
1888 2261
1889void 2262void
1890ev_ref (EV_P)
1891{
1892 ++activecnt;
1893}
1894
1895void
1896ev_unref (EV_P)
1897{
1898 --activecnt;
1899}
1900
1901static int loop_done;
1902
1903void
1904ev_loop (EV_P_ int flags) 2263ev_loop (EV_P_ int flags)
1905{ 2264{
2265#if EV_MINIMAL < 2
2266 ++loop_depth;
2267#endif
2268
2269 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2270
1906 loop_done = EVUNLOOP_CANCEL; 2271 loop_done = EVUNLOOP_CANCEL;
1907 2272
1908 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2273 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1909 2274
1910 do 2275 do
1911 { 2276 {
1912#if EV_VERIFY >= 2 2277#if EV_VERIFY >= 2
1913 ev_loop_verify (EV_A); 2278 ev_loop_verify (EV_A);
… …
1926 /* we might have forked, so queue fork handlers */ 2291 /* we might have forked, so queue fork handlers */
1927 if (expect_false (postfork)) 2292 if (expect_false (postfork))
1928 if (forkcnt) 2293 if (forkcnt)
1929 { 2294 {
1930 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2295 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1931 call_pending (EV_A); 2296 EV_INVOKE_PENDING;
1932 } 2297 }
1933#endif 2298#endif
1934 2299
1935 /* queue prepare watchers (and execute them) */ 2300 /* queue prepare watchers (and execute them) */
1936 if (expect_false (preparecnt)) 2301 if (expect_false (preparecnt))
1937 { 2302 {
1938 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2303 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1939 call_pending (EV_A); 2304 EV_INVOKE_PENDING;
1940 } 2305 }
1941 2306
1942 if (expect_false (!activecnt)) 2307 if (expect_false (loop_done))
1943 break; 2308 break;
1944 2309
1945 /* we might have forked, so reify kernel state if necessary */ 2310 /* we might have forked, so reify kernel state if necessary */
1946 if (expect_false (postfork)) 2311 if (expect_false (postfork))
1947 loop_fork (EV_A); 2312 loop_fork (EV_A);
… …
1954 ev_tstamp waittime = 0.; 2319 ev_tstamp waittime = 0.;
1955 ev_tstamp sleeptime = 0.; 2320 ev_tstamp sleeptime = 0.;
1956 2321
1957 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2322 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1958 { 2323 {
2324 /* remember old timestamp for io_blocktime calculation */
2325 ev_tstamp prev_mn_now = mn_now;
2326
1959 /* update time to cancel out callback processing overhead */ 2327 /* update time to cancel out callback processing overhead */
1960 time_update (EV_A_ 1e100); 2328 time_update (EV_A_ 1e100);
1961 2329
1962 waittime = MAX_BLOCKTIME; 2330 waittime = MAX_BLOCKTIME;
1963 2331
… …
1973 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2341 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1974 if (waittime > to) waittime = to; 2342 if (waittime > to) waittime = to;
1975 } 2343 }
1976#endif 2344#endif
1977 2345
2346 /* don't let timeouts decrease the waittime below timeout_blocktime */
1978 if (expect_false (waittime < timeout_blocktime)) 2347 if (expect_false (waittime < timeout_blocktime))
1979 waittime = timeout_blocktime; 2348 waittime = timeout_blocktime;
1980 2349
1981 sleeptime = waittime - backend_fudge; 2350 /* extra check because io_blocktime is commonly 0 */
1982
1983 if (expect_true (sleeptime > io_blocktime)) 2351 if (expect_false (io_blocktime))
1984 sleeptime = io_blocktime;
1985
1986 if (sleeptime)
1987 { 2352 {
2353 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2354
2355 if (sleeptime > waittime - backend_fudge)
2356 sleeptime = waittime - backend_fudge;
2357
2358 if (expect_true (sleeptime > 0.))
2359 {
1988 ev_sleep (sleeptime); 2360 ev_sleep (sleeptime);
1989 waittime -= sleeptime; 2361 waittime -= sleeptime;
2362 }
1990 } 2363 }
1991 } 2364 }
1992 2365
2366#if EV_MINIMAL < 2
1993 ++loop_count; 2367 ++loop_count;
2368#endif
2369 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1994 backend_poll (EV_A_ waittime); 2370 backend_poll (EV_A_ waittime);
2371 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1995 2372
1996 /* update ev_rt_now, do magic */ 2373 /* update ev_rt_now, do magic */
1997 time_update (EV_A_ waittime + sleeptime); 2374 time_update (EV_A_ waittime + sleeptime);
1998 } 2375 }
1999 2376
… …
2010 2387
2011 /* queue check watchers, to be executed first */ 2388 /* queue check watchers, to be executed first */
2012 if (expect_false (checkcnt)) 2389 if (expect_false (checkcnt))
2013 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2390 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2014 2391
2015 call_pending (EV_A); 2392 EV_INVOKE_PENDING;
2016 } 2393 }
2017 while (expect_true ( 2394 while (expect_true (
2018 activecnt 2395 activecnt
2019 && !loop_done 2396 && !loop_done
2020 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2397 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2021 )); 2398 ));
2022 2399
2023 if (loop_done == EVUNLOOP_ONE) 2400 if (loop_done == EVUNLOOP_ONE)
2024 loop_done = EVUNLOOP_CANCEL; 2401 loop_done = EVUNLOOP_CANCEL;
2402
2403#if EV_MINIMAL < 2
2404 --loop_depth;
2405#endif
2025} 2406}
2026 2407
2027void 2408void
2028ev_unloop (EV_P_ int how) 2409ev_unloop (EV_P_ int how)
2029{ 2410{
2030 loop_done = how; 2411 loop_done = how;
2031} 2412}
2032 2413
2414void
2415ev_ref (EV_P)
2416{
2417 ++activecnt;
2418}
2419
2420void
2421ev_unref (EV_P)
2422{
2423 --activecnt;
2424}
2425
2426void
2427ev_now_update (EV_P)
2428{
2429 time_update (EV_A_ 1e100);
2430}
2431
2432void
2433ev_suspend (EV_P)
2434{
2435 ev_now_update (EV_A);
2436}
2437
2438void
2439ev_resume (EV_P)
2440{
2441 ev_tstamp mn_prev = mn_now;
2442
2443 ev_now_update (EV_A);
2444 timers_reschedule (EV_A_ mn_now - mn_prev);
2445#if EV_PERIODIC_ENABLE
2446 /* TODO: really do this? */
2447 periodics_reschedule (EV_A);
2448#endif
2449}
2450
2033/*****************************************************************************/ 2451/*****************************************************************************/
2452/* singly-linked list management, used when the expected list length is short */
2034 2453
2035void inline_size 2454inline_size void
2036wlist_add (WL *head, WL elem) 2455wlist_add (WL *head, WL elem)
2037{ 2456{
2038 elem->next = *head; 2457 elem->next = *head;
2039 *head = elem; 2458 *head = elem;
2040} 2459}
2041 2460
2042void inline_size 2461inline_size void
2043wlist_del (WL *head, WL elem) 2462wlist_del (WL *head, WL elem)
2044{ 2463{
2045 while (*head) 2464 while (*head)
2046 { 2465 {
2047 if (*head == elem) 2466 if (expect_true (*head == elem))
2048 { 2467 {
2049 *head = elem->next; 2468 *head = elem->next;
2050 return; 2469 break;
2051 } 2470 }
2052 2471
2053 head = &(*head)->next; 2472 head = &(*head)->next;
2054 } 2473 }
2055} 2474}
2056 2475
2057void inline_speed 2476/* internal, faster, version of ev_clear_pending */
2477inline_speed void
2058clear_pending (EV_P_ W w) 2478clear_pending (EV_P_ W w)
2059{ 2479{
2060 if (w->pending) 2480 if (w->pending)
2061 { 2481 {
2062 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2482 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2063 w->pending = 0; 2483 w->pending = 0;
2064 } 2484 }
2065} 2485}
2066 2486
2067int 2487int
… …
2071 int pending = w_->pending; 2491 int pending = w_->pending;
2072 2492
2073 if (expect_true (pending)) 2493 if (expect_true (pending))
2074 { 2494 {
2075 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2495 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2496 p->w = (W)&pending_w;
2076 w_->pending = 0; 2497 w_->pending = 0;
2077 p->w = 0;
2078 return p->events; 2498 return p->events;
2079 } 2499 }
2080 else 2500 else
2081 return 0; 2501 return 0;
2082} 2502}
2083 2503
2084void inline_size 2504inline_size void
2085pri_adjust (EV_P_ W w) 2505pri_adjust (EV_P_ W w)
2086{ 2506{
2087 int pri = w->priority; 2507 int pri = ev_priority (w);
2088 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2508 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2089 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2509 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2090 w->priority = pri; 2510 ev_set_priority (w, pri);
2091} 2511}
2092 2512
2093void inline_speed 2513inline_speed void
2094ev_start (EV_P_ W w, int active) 2514ev_start (EV_P_ W w, int active)
2095{ 2515{
2096 pri_adjust (EV_A_ w); 2516 pri_adjust (EV_A_ w);
2097 w->active = active; 2517 w->active = active;
2098 ev_ref (EV_A); 2518 ev_ref (EV_A);
2099} 2519}
2100 2520
2101void inline_size 2521inline_size void
2102ev_stop (EV_P_ W w) 2522ev_stop (EV_P_ W w)
2103{ 2523{
2104 ev_unref (EV_A); 2524 ev_unref (EV_A);
2105 w->active = 0; 2525 w->active = 0;
2106} 2526}
… …
2113 int fd = w->fd; 2533 int fd = w->fd;
2114 2534
2115 if (expect_false (ev_is_active (w))) 2535 if (expect_false (ev_is_active (w)))
2116 return; 2536 return;
2117 2537
2118 assert (("ev_io_start called with negative fd", fd >= 0)); 2538 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2539 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2119 2540
2120 EV_FREQUENT_CHECK; 2541 EV_FREQUENT_CHECK;
2121 2542
2122 ev_start (EV_A_ (W)w, 1); 2543 ev_start (EV_A_ (W)w, 1);
2123 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2544 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2124 wlist_add (&anfds[fd].head, (WL)w); 2545 wlist_add (&anfds[fd].head, (WL)w);
2125 2546
2126 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2547 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2127 w->events &= ~EV_IOFDSET; 2548 w->events &= ~EV__IOFDSET;
2128 2549
2129 EV_FREQUENT_CHECK; 2550 EV_FREQUENT_CHECK;
2130} 2551}
2131 2552
2132void noinline 2553void noinline
… …
2134{ 2555{
2135 clear_pending (EV_A_ (W)w); 2556 clear_pending (EV_A_ (W)w);
2136 if (expect_false (!ev_is_active (w))) 2557 if (expect_false (!ev_is_active (w)))
2137 return; 2558 return;
2138 2559
2139 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2560 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2140 2561
2141 EV_FREQUENT_CHECK; 2562 EV_FREQUENT_CHECK;
2142 2563
2143 wlist_del (&anfds[w->fd].head, (WL)w); 2564 wlist_del (&anfds[w->fd].head, (WL)w);
2144 ev_stop (EV_A_ (W)w); 2565 ev_stop (EV_A_ (W)w);
… …
2154 if (expect_false (ev_is_active (w))) 2575 if (expect_false (ev_is_active (w)))
2155 return; 2576 return;
2156 2577
2157 ev_at (w) += mn_now; 2578 ev_at (w) += mn_now;
2158 2579
2159 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2580 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2160 2581
2161 EV_FREQUENT_CHECK; 2582 EV_FREQUENT_CHECK;
2162 2583
2163 ++timercnt; 2584 ++timercnt;
2164 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2585 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2167 ANHE_at_cache (timers [ev_active (w)]); 2588 ANHE_at_cache (timers [ev_active (w)]);
2168 upheap (timers, ev_active (w)); 2589 upheap (timers, ev_active (w));
2169 2590
2170 EV_FREQUENT_CHECK; 2591 EV_FREQUENT_CHECK;
2171 2592
2172 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2593 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2173} 2594}
2174 2595
2175void noinline 2596void noinline
2176ev_timer_stop (EV_P_ ev_timer *w) 2597ev_timer_stop (EV_P_ ev_timer *w)
2177{ 2598{
… …
2182 EV_FREQUENT_CHECK; 2603 EV_FREQUENT_CHECK;
2183 2604
2184 { 2605 {
2185 int active = ev_active (w); 2606 int active = ev_active (w);
2186 2607
2187 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2608 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2188 2609
2189 --timercnt; 2610 --timercnt;
2190 2611
2191 if (expect_true (active < timercnt + HEAP0)) 2612 if (expect_true (active < timercnt + HEAP0))
2192 { 2613 {
2193 timers [active] = timers [timercnt + HEAP0]; 2614 timers [active] = timers [timercnt + HEAP0];
2194 adjustheap (timers, timercnt, active); 2615 adjustheap (timers, timercnt, active);
2195 } 2616 }
2196 } 2617 }
2197 2618
2198 EV_FREQUENT_CHECK;
2199
2200 ev_at (w) -= mn_now; 2619 ev_at (w) -= mn_now;
2201 2620
2202 ev_stop (EV_A_ (W)w); 2621 ev_stop (EV_A_ (W)w);
2622
2623 EV_FREQUENT_CHECK;
2203} 2624}
2204 2625
2205void noinline 2626void noinline
2206ev_timer_again (EV_P_ ev_timer *w) 2627ev_timer_again (EV_P_ ev_timer *w)
2207{ 2628{
… …
2225 } 2646 }
2226 2647
2227 EV_FREQUENT_CHECK; 2648 EV_FREQUENT_CHECK;
2228} 2649}
2229 2650
2651ev_tstamp
2652ev_timer_remaining (EV_P_ ev_timer *w)
2653{
2654 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2655}
2656
2230#if EV_PERIODIC_ENABLE 2657#if EV_PERIODIC_ENABLE
2231void noinline 2658void noinline
2232ev_periodic_start (EV_P_ ev_periodic *w) 2659ev_periodic_start (EV_P_ ev_periodic *w)
2233{ 2660{
2234 if (expect_false (ev_is_active (w))) 2661 if (expect_false (ev_is_active (w)))
… …
2236 2663
2237 if (w->reschedule_cb) 2664 if (w->reschedule_cb)
2238 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2665 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2239 else if (w->interval) 2666 else if (w->interval)
2240 { 2667 {
2241 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2668 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2242 /* this formula differs from the one in periodic_reify because we do not always round up */ 2669 /* this formula differs from the one in periodic_reify because we do not always round up */
2243 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2670 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2244 } 2671 }
2245 else 2672 else
2246 ev_at (w) = w->offset; 2673 ev_at (w) = w->offset;
… …
2254 ANHE_at_cache (periodics [ev_active (w)]); 2681 ANHE_at_cache (periodics [ev_active (w)]);
2255 upheap (periodics, ev_active (w)); 2682 upheap (periodics, ev_active (w));
2256 2683
2257 EV_FREQUENT_CHECK; 2684 EV_FREQUENT_CHECK;
2258 2685
2259 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2686 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2260} 2687}
2261 2688
2262void noinline 2689void noinline
2263ev_periodic_stop (EV_P_ ev_periodic *w) 2690ev_periodic_stop (EV_P_ ev_periodic *w)
2264{ 2691{
… …
2269 EV_FREQUENT_CHECK; 2696 EV_FREQUENT_CHECK;
2270 2697
2271 { 2698 {
2272 int active = ev_active (w); 2699 int active = ev_active (w);
2273 2700
2274 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2701 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2275 2702
2276 --periodiccnt; 2703 --periodiccnt;
2277 2704
2278 if (expect_true (active < periodiccnt + HEAP0)) 2705 if (expect_true (active < periodiccnt + HEAP0))
2279 { 2706 {
2280 periodics [active] = periodics [periodiccnt + HEAP0]; 2707 periodics [active] = periodics [periodiccnt + HEAP0];
2281 adjustheap (periodics, periodiccnt, active); 2708 adjustheap (periodics, periodiccnt, active);
2282 } 2709 }
2283 } 2710 }
2284 2711
2285 EV_FREQUENT_CHECK;
2286
2287 ev_stop (EV_A_ (W)w); 2712 ev_stop (EV_A_ (W)w);
2713
2714 EV_FREQUENT_CHECK;
2288} 2715}
2289 2716
2290void noinline 2717void noinline
2291ev_periodic_again (EV_P_ ev_periodic *w) 2718ev_periodic_again (EV_P_ ev_periodic *w)
2292{ 2719{
… …
2301#endif 2728#endif
2302 2729
2303void noinline 2730void noinline
2304ev_signal_start (EV_P_ ev_signal *w) 2731ev_signal_start (EV_P_ ev_signal *w)
2305{ 2732{
2306#if EV_MULTIPLICITY
2307 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2308#endif
2309 if (expect_false (ev_is_active (w))) 2733 if (expect_false (ev_is_active (w)))
2310 return; 2734 return;
2311 2735
2312 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2736 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2313 2737
2314 evpipe_init (EV_A); 2738#if EV_MULTIPLICITY
2739 assert (("libev: a signal must not be attached to two different loops",
2740 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2315 2741
2316 EV_FREQUENT_CHECK; 2742 signals [w->signum - 1].loop = EV_A;
2743#endif
2317 2744
2745 EV_FREQUENT_CHECK;
2746
2747#if EV_USE_SIGNALFD
2748 if (sigfd == -2)
2318 { 2749 {
2319#ifndef _WIN32 2750 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2320 sigset_t full, prev; 2751 if (sigfd < 0 && errno == EINVAL)
2321 sigfillset (&full); 2752 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2322 sigprocmask (SIG_SETMASK, &full, &prev);
2323#endif
2324 2753
2325 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2754 if (sigfd >= 0)
2755 {
2756 fd_intern (sigfd); /* doing it twice will not hurt */
2326 2757
2327#ifndef _WIN32 2758 sigemptyset (&sigfd_set);
2328 sigprocmask (SIG_SETMASK, &prev, 0); 2759
2329#endif 2760 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2761 ev_set_priority (&sigfd_w, EV_MAXPRI);
2762 ev_io_start (EV_A_ &sigfd_w);
2763 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2764 }
2330 } 2765 }
2766
2767 if (sigfd >= 0)
2768 {
2769 /* TODO: check .head */
2770 sigaddset (&sigfd_set, w->signum);
2771 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2772
2773 signalfd (sigfd, &sigfd_set, 0);
2774 }
2775#endif
2331 2776
2332 ev_start (EV_A_ (W)w, 1); 2777 ev_start (EV_A_ (W)w, 1);
2333 wlist_add (&signals [w->signum - 1].head, (WL)w); 2778 wlist_add (&signals [w->signum - 1].head, (WL)w);
2334 2779
2335 if (!((WL)w)->next) 2780 if (!((WL)w)->next)
2781# if EV_USE_SIGNALFD
2782 if (sigfd < 0) /*TODO*/
2783# endif
2336 { 2784 {
2337#if _WIN32 2785# ifdef _WIN32
2786 evpipe_init (EV_A);
2787
2338 signal (w->signum, ev_sighandler); 2788 signal (w->signum, ev_sighandler);
2339#else 2789# else
2340 struct sigaction sa; 2790 struct sigaction sa;
2791
2792 evpipe_init (EV_A);
2793
2341 sa.sa_handler = ev_sighandler; 2794 sa.sa_handler = ev_sighandler;
2342 sigfillset (&sa.sa_mask); 2795 sigfillset (&sa.sa_mask);
2343 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2796 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2344 sigaction (w->signum, &sa, 0); 2797 sigaction (w->signum, &sa, 0);
2798
2799 sigemptyset (&sa.sa_mask);
2800 sigaddset (&sa.sa_mask, w->signum);
2801 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2345#endif 2802#endif
2346 } 2803 }
2347 2804
2348 EV_FREQUENT_CHECK; 2805 EV_FREQUENT_CHECK;
2349} 2806}
2350 2807
2351void noinline 2808void noinline
… …
2359 2816
2360 wlist_del (&signals [w->signum - 1].head, (WL)w); 2817 wlist_del (&signals [w->signum - 1].head, (WL)w);
2361 ev_stop (EV_A_ (W)w); 2818 ev_stop (EV_A_ (W)w);
2362 2819
2363 if (!signals [w->signum - 1].head) 2820 if (!signals [w->signum - 1].head)
2821 {
2822#if EV_MULTIPLICITY
2823 signals [w->signum - 1].loop = 0; /* unattach from signal */
2824#endif
2825#if EV_USE_SIGNALFD
2826 if (sigfd >= 0)
2827 {
2828 sigset_t ss;
2829
2830 sigemptyset (&ss);
2831 sigaddset (&ss, w->signum);
2832 sigdelset (&sigfd_set, w->signum);
2833
2834 signalfd (sigfd, &sigfd_set, 0);
2835 sigprocmask (SIG_UNBLOCK, &ss, 0);
2836 }
2837 else
2838#endif
2364 signal (w->signum, SIG_DFL); 2839 signal (w->signum, SIG_DFL);
2840 }
2365 2841
2366 EV_FREQUENT_CHECK; 2842 EV_FREQUENT_CHECK;
2367} 2843}
2368 2844
2369void 2845void
2370ev_child_start (EV_P_ ev_child *w) 2846ev_child_start (EV_P_ ev_child *w)
2371{ 2847{
2372#if EV_MULTIPLICITY 2848#if EV_MULTIPLICITY
2373 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2849 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2374#endif 2850#endif
2375 if (expect_false (ev_is_active (w))) 2851 if (expect_false (ev_is_active (w)))
2376 return; 2852 return;
2377 2853
2378 EV_FREQUENT_CHECK; 2854 EV_FREQUENT_CHECK;
… …
2403# ifdef _WIN32 2879# ifdef _WIN32
2404# undef lstat 2880# undef lstat
2405# define lstat(a,b) _stati64 (a,b) 2881# define lstat(a,b) _stati64 (a,b)
2406# endif 2882# endif
2407 2883
2408#define DEF_STAT_INTERVAL 5.0074891 2884#define DEF_STAT_INTERVAL 5.0074891
2885#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2409#define MIN_STAT_INTERVAL 0.1074891 2886#define MIN_STAT_INTERVAL 0.1074891
2410 2887
2411static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2888static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2412 2889
2413#if EV_USE_INOTIFY 2890#if EV_USE_INOTIFY
2414# define EV_INOTIFY_BUFSIZE 8192 2891
2892/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2893# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2415 2894
2416static void noinline 2895static void noinline
2417infy_add (EV_P_ ev_stat *w) 2896infy_add (EV_P_ ev_stat *w)
2418{ 2897{
2419 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); 2898 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);
2420 2899
2421 if (w->wd < 0) 2900 if (w->wd >= 0)
2901 {
2902 struct statfs sfs;
2903
2904 /* now local changes will be tracked by inotify, but remote changes won't */
2905 /* unless the filesystem is known to be local, we therefore still poll */
2906 /* also do poll on <2.6.25, but with normal frequency */
2907
2908 if (!fs_2625)
2909 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2910 else if (!statfs (w->path, &sfs)
2911 && (sfs.f_type == 0x1373 /* devfs */
2912 || sfs.f_type == 0xEF53 /* ext2/3 */
2913 || sfs.f_type == 0x3153464a /* jfs */
2914 || sfs.f_type == 0x52654973 /* reiser3 */
2915 || sfs.f_type == 0x01021994 /* tempfs */
2916 || sfs.f_type == 0x58465342 /* xfs */))
2917 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2918 else
2919 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2422 { 2920 }
2423 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2921 else
2922 {
2923 /* can't use inotify, continue to stat */
2924 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2424 2925
2425 /* monitor some parent directory for speedup hints */ 2926 /* if path is not there, monitor some parent directory for speedup hints */
2426 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2927 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2427 /* but an efficiency issue only */ 2928 /* but an efficiency issue only */
2428 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2929 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2429 { 2930 {
2430 char path [4096]; 2931 char path [4096];
2431 strcpy (path, w->path); 2932 strcpy (path, w->path);
… …
2435 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2936 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2436 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2937 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2437 2938
2438 char *pend = strrchr (path, '/'); 2939 char *pend = strrchr (path, '/');
2439 2940
2440 if (!pend) 2941 if (!pend || pend == path)
2441 break; /* whoops, no '/', complain to your admin */ 2942 break;
2442 2943
2443 *pend = 0; 2944 *pend = 0;
2444 w->wd = inotify_add_watch (fs_fd, path, mask); 2945 w->wd = inotify_add_watch (fs_fd, path, mask);
2445 } 2946 }
2446 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2947 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2447 } 2948 }
2448 } 2949 }
2449 else
2450 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2451 2950
2452 if (w->wd >= 0) 2951 if (w->wd >= 0)
2453 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2952 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2953
2954 /* now re-arm timer, if required */
2955 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2956 ev_timer_again (EV_A_ &w->timer);
2957 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2454} 2958}
2455 2959
2456static void noinline 2960static void noinline
2457infy_del (EV_P_ ev_stat *w) 2961infy_del (EV_P_ ev_stat *w)
2458{ 2962{
… …
2472 2976
2473static void noinline 2977static void noinline
2474infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2978infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2475{ 2979{
2476 if (slot < 0) 2980 if (slot < 0)
2477 /* overflow, need to check for all hahs slots */ 2981 /* overflow, need to check for all hash slots */
2478 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2982 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2479 infy_wd (EV_A_ slot, wd, ev); 2983 infy_wd (EV_A_ slot, wd, ev);
2480 else 2984 else
2481 { 2985 {
2482 WL w_; 2986 WL w_;
… …
2488 2992
2489 if (w->wd == wd || wd == -1) 2993 if (w->wd == wd || wd == -1)
2490 { 2994 {
2491 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2995 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2492 { 2996 {
2997 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2493 w->wd = -1; 2998 w->wd = -1;
2494 infy_add (EV_A_ w); /* re-add, no matter what */ 2999 infy_add (EV_A_ w); /* re-add, no matter what */
2495 } 3000 }
2496 3001
2497 stat_timer_cb (EV_A_ &w->timer, 0); 3002 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2502 3007
2503static void 3008static void
2504infy_cb (EV_P_ ev_io *w, int revents) 3009infy_cb (EV_P_ ev_io *w, int revents)
2505{ 3010{
2506 char buf [EV_INOTIFY_BUFSIZE]; 3011 char buf [EV_INOTIFY_BUFSIZE];
2507 struct inotify_event *ev = (struct inotify_event *)buf;
2508 int ofs; 3012 int ofs;
2509 int len = read (fs_fd, buf, sizeof (buf)); 3013 int len = read (fs_fd, buf, sizeof (buf));
2510 3014
2511 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3015 for (ofs = 0; ofs < len; )
3016 {
3017 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2512 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3018 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3019 ofs += sizeof (struct inotify_event) + ev->len;
3020 }
2513} 3021}
2514 3022
2515void inline_size 3023inline_size unsigned int
3024ev_linux_version (void)
3025{
3026 struct utsname buf;
3027 unsigned int v;
3028 int i;
3029 char *p = buf.release;
3030
3031 if (uname (&buf))
3032 return 0;
3033
3034 for (i = 3+1; --i; )
3035 {
3036 unsigned int c = 0;
3037
3038 for (;;)
3039 {
3040 if (*p >= '0' && *p <= '9')
3041 c = c * 10 + *p++ - '0';
3042 else
3043 {
3044 p += *p == '.';
3045 break;
3046 }
3047 }
3048
3049 v = (v << 8) | c;
3050 }
3051
3052 return v;
3053}
3054
3055inline_size void
3056ev_check_2625 (EV_P)
3057{
3058 /* kernels < 2.6.25 are borked
3059 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3060 */
3061 if (ev_linux_version () < 0x020619)
3062 return;
3063
3064 fs_2625 = 1;
3065}
3066
3067inline_size int
3068infy_newfd (void)
3069{
3070#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3071 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3072 if (fd >= 0)
3073 return fd;
3074#endif
3075 return inotify_init ();
3076}
3077
3078inline_size void
2516infy_init (EV_P) 3079infy_init (EV_P)
2517{ 3080{
2518 if (fs_fd != -2) 3081 if (fs_fd != -2)
2519 return; 3082 return;
2520 3083
3084 fs_fd = -1;
3085
3086 ev_check_2625 (EV_A);
3087
2521 fs_fd = inotify_init (); 3088 fs_fd = infy_newfd ();
2522 3089
2523 if (fs_fd >= 0) 3090 if (fs_fd >= 0)
2524 { 3091 {
3092 fd_intern (fs_fd);
2525 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3093 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2526 ev_set_priority (&fs_w, EV_MAXPRI); 3094 ev_set_priority (&fs_w, EV_MAXPRI);
2527 ev_io_start (EV_A_ &fs_w); 3095 ev_io_start (EV_A_ &fs_w);
3096 ev_unref (EV_A);
2528 } 3097 }
2529} 3098}
2530 3099
2531void inline_size 3100inline_size void
2532infy_fork (EV_P) 3101infy_fork (EV_P)
2533{ 3102{
2534 int slot; 3103 int slot;
2535 3104
2536 if (fs_fd < 0) 3105 if (fs_fd < 0)
2537 return; 3106 return;
2538 3107
3108 ev_ref (EV_A);
3109 ev_io_stop (EV_A_ &fs_w);
2539 close (fs_fd); 3110 close (fs_fd);
2540 fs_fd = inotify_init (); 3111 fs_fd = infy_newfd ();
3112
3113 if (fs_fd >= 0)
3114 {
3115 fd_intern (fs_fd);
3116 ev_io_set (&fs_w, fs_fd, EV_READ);
3117 ev_io_start (EV_A_ &fs_w);
3118 ev_unref (EV_A);
3119 }
2541 3120
2542 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3121 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2543 { 3122 {
2544 WL w_ = fs_hash [slot].head; 3123 WL w_ = fs_hash [slot].head;
2545 fs_hash [slot].head = 0; 3124 fs_hash [slot].head = 0;
… …
2552 w->wd = -1; 3131 w->wd = -1;
2553 3132
2554 if (fs_fd >= 0) 3133 if (fs_fd >= 0)
2555 infy_add (EV_A_ w); /* re-add, no matter what */ 3134 infy_add (EV_A_ w); /* re-add, no matter what */
2556 else 3135 else
3136 {
3137 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3138 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2557 ev_timer_start (EV_A_ &w->timer); 3139 ev_timer_again (EV_A_ &w->timer);
3140 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3141 }
2558 } 3142 }
2559
2560 } 3143 }
2561} 3144}
2562 3145
3146#endif
3147
3148#ifdef _WIN32
3149# define EV_LSTAT(p,b) _stati64 (p, b)
3150#else
3151# define EV_LSTAT(p,b) lstat (p, b)
2563#endif 3152#endif
2564 3153
2565void 3154void
2566ev_stat_stat (EV_P_ ev_stat *w) 3155ev_stat_stat (EV_P_ ev_stat *w)
2567{ 3156{
… …
2574static void noinline 3163static void noinline
2575stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3164stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2576{ 3165{
2577 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3166 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2578 3167
2579 /* we copy this here each the time so that */ 3168 ev_statdata prev = w->attr;
2580 /* prev has the old value when the callback gets invoked */
2581 w->prev = w->attr;
2582 ev_stat_stat (EV_A_ w); 3169 ev_stat_stat (EV_A_ w);
2583 3170
2584 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3171 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2585 if ( 3172 if (
2586 w->prev.st_dev != w->attr.st_dev 3173 prev.st_dev != w->attr.st_dev
2587 || w->prev.st_ino != w->attr.st_ino 3174 || prev.st_ino != w->attr.st_ino
2588 || w->prev.st_mode != w->attr.st_mode 3175 || prev.st_mode != w->attr.st_mode
2589 || w->prev.st_nlink != w->attr.st_nlink 3176 || prev.st_nlink != w->attr.st_nlink
2590 || w->prev.st_uid != w->attr.st_uid 3177 || prev.st_uid != w->attr.st_uid
2591 || w->prev.st_gid != w->attr.st_gid 3178 || prev.st_gid != w->attr.st_gid
2592 || w->prev.st_rdev != w->attr.st_rdev 3179 || prev.st_rdev != w->attr.st_rdev
2593 || w->prev.st_size != w->attr.st_size 3180 || prev.st_size != w->attr.st_size
2594 || w->prev.st_atime != w->attr.st_atime 3181 || prev.st_atime != w->attr.st_atime
2595 || w->prev.st_mtime != w->attr.st_mtime 3182 || prev.st_mtime != w->attr.st_mtime
2596 || w->prev.st_ctime != w->attr.st_ctime 3183 || prev.st_ctime != w->attr.st_ctime
2597 ) { 3184 ) {
3185 /* we only update w->prev on actual differences */
3186 /* in case we test more often than invoke the callback, */
3187 /* to ensure that prev is always different to attr */
3188 w->prev = prev;
3189
2598 #if EV_USE_INOTIFY 3190 #if EV_USE_INOTIFY
3191 if (fs_fd >= 0)
3192 {
2599 infy_del (EV_A_ w); 3193 infy_del (EV_A_ w);
2600 infy_add (EV_A_ w); 3194 infy_add (EV_A_ w);
2601 ev_stat_stat (EV_A_ w); /* avoid race... */ 3195 ev_stat_stat (EV_A_ w); /* avoid race... */
3196 }
2602 #endif 3197 #endif
2603 3198
2604 ev_feed_event (EV_A_ w, EV_STAT); 3199 ev_feed_event (EV_A_ w, EV_STAT);
2605 } 3200 }
2606} 3201}
… …
2609ev_stat_start (EV_P_ ev_stat *w) 3204ev_stat_start (EV_P_ ev_stat *w)
2610{ 3205{
2611 if (expect_false (ev_is_active (w))) 3206 if (expect_false (ev_is_active (w)))
2612 return; 3207 return;
2613 3208
2614 /* since we use memcmp, we need to clear any padding data etc. */
2615 memset (&w->prev, 0, sizeof (ev_statdata));
2616 memset (&w->attr, 0, sizeof (ev_statdata));
2617
2618 ev_stat_stat (EV_A_ w); 3209 ev_stat_stat (EV_A_ w);
2619 3210
3211 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2620 if (w->interval < MIN_STAT_INTERVAL) 3212 w->interval = MIN_STAT_INTERVAL;
2621 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2622 3213
2623 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3214 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2624 ev_set_priority (&w->timer, ev_priority (w)); 3215 ev_set_priority (&w->timer, ev_priority (w));
2625 3216
2626#if EV_USE_INOTIFY 3217#if EV_USE_INOTIFY
2627 infy_init (EV_A); 3218 infy_init (EV_A);
2628 3219
2629 if (fs_fd >= 0) 3220 if (fs_fd >= 0)
2630 infy_add (EV_A_ w); 3221 infy_add (EV_A_ w);
2631 else 3222 else
2632#endif 3223#endif
3224 {
2633 ev_timer_start (EV_A_ &w->timer); 3225 ev_timer_again (EV_A_ &w->timer);
3226 ev_unref (EV_A);
3227 }
2634 3228
2635 ev_start (EV_A_ (W)w, 1); 3229 ev_start (EV_A_ (W)w, 1);
2636 3230
2637 EV_FREQUENT_CHECK; 3231 EV_FREQUENT_CHECK;
2638} 3232}
… …
2647 EV_FREQUENT_CHECK; 3241 EV_FREQUENT_CHECK;
2648 3242
2649#if EV_USE_INOTIFY 3243#if EV_USE_INOTIFY
2650 infy_del (EV_A_ w); 3244 infy_del (EV_A_ w);
2651#endif 3245#endif
3246
3247 if (ev_is_active (&w->timer))
3248 {
3249 ev_ref (EV_A);
2652 ev_timer_stop (EV_A_ &w->timer); 3250 ev_timer_stop (EV_A_ &w->timer);
3251 }
2653 3252
2654 ev_stop (EV_A_ (W)w); 3253 ev_stop (EV_A_ (W)w);
2655 3254
2656 EV_FREQUENT_CHECK; 3255 EV_FREQUENT_CHECK;
2657} 3256}
… …
2798embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3397embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2799{ 3398{
2800 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3399 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2801 3400
2802 { 3401 {
2803 struct ev_loop *loop = w->other; 3402 EV_P = w->other;
2804 3403
2805 while (fdchangecnt) 3404 while (fdchangecnt)
2806 { 3405 {
2807 fd_reify (EV_A); 3406 fd_reify (EV_A);
2808 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3407 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2809 } 3408 }
2810 } 3409 }
2811} 3410}
2812 3411
3412static void
3413embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3414{
3415 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3416
3417 ev_embed_stop (EV_A_ w);
3418
3419 {
3420 EV_P = w->other;
3421
3422 ev_loop_fork (EV_A);
3423 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3424 }
3425
3426 ev_embed_start (EV_A_ w);
3427}
3428
2813#if 0 3429#if 0
2814static void 3430static void
2815embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3431embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2816{ 3432{
2817 ev_idle_stop (EV_A_ idle); 3433 ev_idle_stop (EV_A_ idle);
… …
2823{ 3439{
2824 if (expect_false (ev_is_active (w))) 3440 if (expect_false (ev_is_active (w)))
2825 return; 3441 return;
2826 3442
2827 { 3443 {
2828 struct ev_loop *loop = w->other; 3444 EV_P = w->other;
2829 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3445 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2830 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3446 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2831 } 3447 }
2832 3448
2833 EV_FREQUENT_CHECK; 3449 EV_FREQUENT_CHECK;
2834 3450
… …
2837 3453
2838 ev_prepare_init (&w->prepare, embed_prepare_cb); 3454 ev_prepare_init (&w->prepare, embed_prepare_cb);
2839 ev_set_priority (&w->prepare, EV_MINPRI); 3455 ev_set_priority (&w->prepare, EV_MINPRI);
2840 ev_prepare_start (EV_A_ &w->prepare); 3456 ev_prepare_start (EV_A_ &w->prepare);
2841 3457
3458 ev_fork_init (&w->fork, embed_fork_cb);
3459 ev_fork_start (EV_A_ &w->fork);
3460
2842 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3461 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2843 3462
2844 ev_start (EV_A_ (W)w, 1); 3463 ev_start (EV_A_ (W)w, 1);
2845 3464
2846 EV_FREQUENT_CHECK; 3465 EV_FREQUENT_CHECK;
… …
2853 if (expect_false (!ev_is_active (w))) 3472 if (expect_false (!ev_is_active (w)))
2854 return; 3473 return;
2855 3474
2856 EV_FREQUENT_CHECK; 3475 EV_FREQUENT_CHECK;
2857 3476
2858 ev_io_stop (EV_A_ &w->io); 3477 ev_io_stop (EV_A_ &w->io);
2859 ev_prepare_stop (EV_A_ &w->prepare); 3478 ev_prepare_stop (EV_A_ &w->prepare);
3479 ev_fork_stop (EV_A_ &w->fork);
2860 3480
2861 ev_stop (EV_A_ (W)w); 3481 ev_stop (EV_A_ (W)w);
2862 3482
2863 EV_FREQUENT_CHECK; 3483 EV_FREQUENT_CHECK;
2864} 3484}
… …
2943 3563
2944void 3564void
2945ev_async_send (EV_P_ ev_async *w) 3565ev_async_send (EV_P_ ev_async *w)
2946{ 3566{
2947 w->sent = 1; 3567 w->sent = 1;
2948 evpipe_write (EV_A_ &gotasync); 3568 evpipe_write (EV_A_ &async_pending);
2949} 3569}
2950#endif 3570#endif
2951 3571
2952/*****************************************************************************/ 3572/*****************************************************************************/
2953 3573
… …
2963once_cb (EV_P_ struct ev_once *once, int revents) 3583once_cb (EV_P_ struct ev_once *once, int revents)
2964{ 3584{
2965 void (*cb)(int revents, void *arg) = once->cb; 3585 void (*cb)(int revents, void *arg) = once->cb;
2966 void *arg = once->arg; 3586 void *arg = once->arg;
2967 3587
2968 ev_io_stop (EV_A_ &once->io); 3588 ev_io_stop (EV_A_ &once->io);
2969 ev_timer_stop (EV_A_ &once->to); 3589 ev_timer_stop (EV_A_ &once->to);
2970 ev_free (once); 3590 ev_free (once);
2971 3591
2972 cb (revents, arg); 3592 cb (revents, arg);
2973} 3593}
2974 3594
2975static void 3595static void
2976once_cb_io (EV_P_ ev_io *w, int revents) 3596once_cb_io (EV_P_ ev_io *w, int revents)
2977{ 3597{
2978 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3598 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3599
3600 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2979} 3601}
2980 3602
2981static void 3603static void
2982once_cb_to (EV_P_ ev_timer *w, int revents) 3604once_cb_to (EV_P_ ev_timer *w, int revents)
2983{ 3605{
2984 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3606 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3607
3608 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2985} 3609}
2986 3610
2987void 3611void
2988ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3612ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2989{ 3613{
… …
3011 ev_timer_set (&once->to, timeout, 0.); 3635 ev_timer_set (&once->to, timeout, 0.);
3012 ev_timer_start (EV_A_ &once->to); 3636 ev_timer_start (EV_A_ &once->to);
3013 } 3637 }
3014} 3638}
3015 3639
3640/*****************************************************************************/
3641
3642#if EV_WALK_ENABLE
3643void
3644ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3645{
3646 int i, j;
3647 ev_watcher_list *wl, *wn;
3648
3649 if (types & (EV_IO | EV_EMBED))
3650 for (i = 0; i < anfdmax; ++i)
3651 for (wl = anfds [i].head; wl; )
3652 {
3653 wn = wl->next;
3654
3655#if EV_EMBED_ENABLE
3656 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3657 {
3658 if (types & EV_EMBED)
3659 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3660 }
3661 else
3662#endif
3663#if EV_USE_INOTIFY
3664 if (ev_cb ((ev_io *)wl) == infy_cb)
3665 ;
3666 else
3667#endif
3668 if ((ev_io *)wl != &pipe_w)
3669 if (types & EV_IO)
3670 cb (EV_A_ EV_IO, wl);
3671
3672 wl = wn;
3673 }
3674
3675 if (types & (EV_TIMER | EV_STAT))
3676 for (i = timercnt + HEAP0; i-- > HEAP0; )
3677#if EV_STAT_ENABLE
3678 /*TODO: timer is not always active*/
3679 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3680 {
3681 if (types & EV_STAT)
3682 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3683 }
3684 else
3685#endif
3686 if (types & EV_TIMER)
3687 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3688
3689#if EV_PERIODIC_ENABLE
3690 if (types & EV_PERIODIC)
3691 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3692 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3693#endif
3694
3695#if EV_IDLE_ENABLE
3696 if (types & EV_IDLE)
3697 for (j = NUMPRI; i--; )
3698 for (i = idlecnt [j]; i--; )
3699 cb (EV_A_ EV_IDLE, idles [j][i]);
3700#endif
3701
3702#if EV_FORK_ENABLE
3703 if (types & EV_FORK)
3704 for (i = forkcnt; i--; )
3705 if (ev_cb (forks [i]) != embed_fork_cb)
3706 cb (EV_A_ EV_FORK, forks [i]);
3707#endif
3708
3709#if EV_ASYNC_ENABLE
3710 if (types & EV_ASYNC)
3711 for (i = asynccnt; i--; )
3712 cb (EV_A_ EV_ASYNC, asyncs [i]);
3713#endif
3714
3715 if (types & EV_PREPARE)
3716 for (i = preparecnt; i--; )
3717#if EV_EMBED_ENABLE
3718 if (ev_cb (prepares [i]) != embed_prepare_cb)
3719#endif
3720 cb (EV_A_ EV_PREPARE, prepares [i]);
3721
3722 if (types & EV_CHECK)
3723 for (i = checkcnt; i--; )
3724 cb (EV_A_ EV_CHECK, checks [i]);
3725
3726 if (types & EV_SIGNAL)
3727 for (i = 0; i < EV_NSIG - 1; ++i)
3728 for (wl = signals [i].head; wl; )
3729 {
3730 wn = wl->next;
3731 cb (EV_A_ EV_SIGNAL, wl);
3732 wl = wn;
3733 }
3734
3735 if (types & EV_CHILD)
3736 for (i = EV_PID_HASHSIZE; i--; )
3737 for (wl = childs [i]; wl; )
3738 {
3739 wn = wl->next;
3740 cb (EV_A_ EV_CHILD, wl);
3741 wl = wn;
3742 }
3743/* EV_STAT 0x00001000 /* stat data changed */
3744/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3745}
3746#endif
3747
3016#if EV_MULTIPLICITY 3748#if EV_MULTIPLICITY
3017 #include "ev_wrap.h" 3749 #include "ev_wrap.h"
3018#endif 3750#endif
3019 3751
3020#ifdef __cplusplus 3752#ifdef __cplusplus

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