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Comparing libev/ev.c (file contents):
Revision 1.262 by root, Wed Oct 1 04:25:25 2008 UTC vs.
Revision 1.337 by root, Wed Mar 10 09:18:24 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
… …
160# define WIN32_LEAN_AND_MEAN 184# define WIN32_LEAN_AND_MEAN
161# include <windows.h> 185# include <windows.h>
162# ifndef EV_SELECT_IS_WINSOCKET 186# ifndef EV_SELECT_IS_WINSOCKET
163# define EV_SELECT_IS_WINSOCKET 1 187# define EV_SELECT_IS_WINSOCKET 1
164# endif 188# endif
189# undef EV_AVOID_STDIO
165#endif 190#endif
166 191
167/* this block tries to deduce configuration from header-defined symbols and defaults */ 192/* this block tries to deduce configuration from header-defined symbols and defaults */
193
194/* try to deduce the maximum number of signals on this platform */
195#if defined (EV_NSIG)
196/* use what's provided */
197#elif defined (NSIG)
198# define EV_NSIG (NSIG)
199#elif defined(_NSIG)
200# define EV_NSIG (_NSIG)
201#elif defined (SIGMAX)
202# define EV_NSIG (SIGMAX+1)
203#elif defined (SIG_MAX)
204# define EV_NSIG (SIG_MAX+1)
205#elif defined (_SIG_MAX)
206# define EV_NSIG (_SIG_MAX+1)
207#elif defined (MAXSIG)
208# define EV_NSIG (MAXSIG+1)
209#elif defined (MAX_SIG)
210# define EV_NSIG (MAX_SIG+1)
211#elif defined (SIGARRAYSIZE)
212# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
213#elif defined (_sys_nsig)
214# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
215#else
216# error "unable to find value for NSIG, please report"
217/* to make it compile regardless, just remove the above line, */
218/* but consider reporting it, too! :) */
219# define EV_NSIG 65
220#endif
221
222#ifndef EV_USE_CLOCK_SYSCALL
223# if __linux && __GLIBC__ >= 2
224# define EV_USE_CLOCK_SYSCALL 1
225# else
226# define EV_USE_CLOCK_SYSCALL 0
227# endif
228#endif
168 229
169#ifndef EV_USE_MONOTONIC 230#ifndef EV_USE_MONOTONIC
170# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 231# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
171# define EV_USE_MONOTONIC 1 232# define EV_USE_MONOTONIC 1
172# else 233# else
173# define EV_USE_MONOTONIC 0 234# define EV_USE_MONOTONIC 0
174# endif 235# endif
175#endif 236#endif
176 237
177#ifndef EV_USE_REALTIME 238#ifndef EV_USE_REALTIME
178# define EV_USE_REALTIME 0 239# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
179#endif 240#endif
180 241
181#ifndef EV_USE_NANOSLEEP 242#ifndef EV_USE_NANOSLEEP
182# if _POSIX_C_SOURCE >= 199309L 243# if _POSIX_C_SOURCE >= 199309L
183# define EV_USE_NANOSLEEP 1 244# define EV_USE_NANOSLEEP 1
… …
244# else 305# else
245# define EV_USE_EVENTFD 0 306# define EV_USE_EVENTFD 0
246# endif 307# endif
247#endif 308#endif
248 309
310#ifndef EV_USE_SIGNALFD
311# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
312# define EV_USE_SIGNALFD 1
313# else
314# define EV_USE_SIGNALFD 0
315# endif
316#endif
317
249#if 0 /* debugging */ 318#if 0 /* debugging */
250# define EV_VERIFY 3 319# define EV_VERIFY 3
251# define EV_USE_4HEAP 1 320# define EV_USE_4HEAP 1
252# define EV_HEAP_CACHE_AT 1 321# define EV_HEAP_CACHE_AT 1
253#endif 322#endif
… …
262 331
263#ifndef EV_HEAP_CACHE_AT 332#ifndef EV_HEAP_CACHE_AT
264# define EV_HEAP_CACHE_AT !EV_MINIMAL 333# define EV_HEAP_CACHE_AT !EV_MINIMAL
265#endif 334#endif
266 335
336/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
337/* which makes programs even slower. might work on other unices, too. */
338#if EV_USE_CLOCK_SYSCALL
339# include <syscall.h>
340# ifdef SYS_clock_gettime
341# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
342# undef EV_USE_MONOTONIC
343# define EV_USE_MONOTONIC 1
344# else
345# undef EV_USE_CLOCK_SYSCALL
346# define EV_USE_CLOCK_SYSCALL 0
347# endif
348#endif
349
267/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 350/* this block fixes any misconfiguration where we know we run into trouble otherwise */
351
352#ifdef _AIX
353/* AIX has a completely broken poll.h header */
354# undef EV_USE_POLL
355# define EV_USE_POLL 0
356#endif
268 357
269#ifndef CLOCK_MONOTONIC 358#ifndef CLOCK_MONOTONIC
270# undef EV_USE_MONOTONIC 359# undef EV_USE_MONOTONIC
271# define EV_USE_MONOTONIC 0 360# define EV_USE_MONOTONIC 0
272#endif 361#endif
… …
286# include <sys/select.h> 375# include <sys/select.h>
287# endif 376# endif
288#endif 377#endif
289 378
290#if EV_USE_INOTIFY 379#if EV_USE_INOTIFY
380# include <sys/utsname.h>
381# include <sys/statfs.h>
291# include <sys/inotify.h> 382# include <sys/inotify.h>
383/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
384# ifndef IN_DONT_FOLLOW
385# undef EV_USE_INOTIFY
386# define EV_USE_INOTIFY 0
387# endif
292#endif 388#endif
293 389
294#if EV_SELECT_IS_WINSOCKET 390#if EV_SELECT_IS_WINSOCKET
295# include <winsock.h> 391# include <winsock.h>
296#endif 392#endif
297 393
298#if EV_USE_EVENTFD 394#if EV_USE_EVENTFD
299/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 395/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
300# include <stdint.h> 396# include <stdint.h>
397# ifndef EFD_NONBLOCK
398# define EFD_NONBLOCK O_NONBLOCK
399# endif
400# ifndef EFD_CLOEXEC
401# ifdef O_CLOEXEC
402# define EFD_CLOEXEC O_CLOEXEC
403# else
404# define EFD_CLOEXEC 02000000
405# endif
406# endif
301# ifdef __cplusplus 407# ifdef __cplusplus
302extern "C" { 408extern "C" {
303# endif 409# endif
304int eventfd (unsigned int initval, int flags); 410int (eventfd) (unsigned int initval, int flags);
305# ifdef __cplusplus 411# ifdef __cplusplus
306} 412}
307# endif 413# endif
308#endif 414#endif
415
416#if EV_USE_SIGNALFD
417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
418# include <stdint.h>
419# ifndef SFD_NONBLOCK
420# define SFD_NONBLOCK O_NONBLOCK
421# endif
422# ifndef SFD_CLOEXEC
423# ifdef O_CLOEXEC
424# define SFD_CLOEXEC O_CLOEXEC
425# else
426# define SFD_CLOEXEC 02000000
427# endif
428# endif
429# ifdef __cplusplus
430extern "C" {
431# endif
432int signalfd (int fd, const sigset_t *mask, int flags);
433
434struct signalfd_siginfo
435{
436 uint32_t ssi_signo;
437 char pad[128 - sizeof (uint32_t)];
438};
439# ifdef __cplusplus
440}
441# endif
442#endif
443
309 444
310/**/ 445/**/
311 446
312#if EV_VERIFY >= 3 447#if EV_VERIFY >= 3
313# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 448# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
… …
325 */ 460 */
326#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 461#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
327 462
328#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 463#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
329#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 464#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
330/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
331 465
332#if __GNUC__ >= 4 466#if __GNUC__ >= 4
333# define expect(expr,value) __builtin_expect ((expr),(value)) 467# define expect(expr,value) __builtin_expect ((expr),(value))
334# define noinline __attribute__ ((noinline)) 468# define noinline __attribute__ ((noinline))
335#else 469#else
… …
348# define inline_speed static noinline 482# define inline_speed static noinline
349#else 483#else
350# define inline_speed static inline 484# define inline_speed static inline
351#endif 485#endif
352 486
353#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 487#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
488
489#if EV_MINPRI == EV_MAXPRI
490# define ABSPRI(w) (((W)w), 0)
491#else
354#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 492# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
493#endif
355 494
356#define EMPTY /* required for microsofts broken pseudo-c compiler */ 495#define EMPTY /* required for microsofts broken pseudo-c compiler */
357#define EMPTY2(a,b) /* used to suppress some warnings */ 496#define EMPTY2(a,b) /* used to suppress some warnings */
358 497
359typedef ev_watcher *W; 498typedef ev_watcher *W;
… …
361typedef ev_watcher_time *WT; 500typedef ev_watcher_time *WT;
362 501
363#define ev_active(w) ((W)(w))->active 502#define ev_active(w) ((W)(w))->active
364#define ev_at(w) ((WT)(w))->at 503#define ev_at(w) ((WT)(w))->at
365 504
366#if EV_USE_MONOTONIC 505#if EV_USE_REALTIME
367/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 506/* sig_atomic_t is used to avoid per-thread variables or locking but still */
368/* giving it a reasonably high chance of working on typical architetcures */ 507/* giving it a reasonably high chance of working on typical architetcures */
508static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
509#endif
510
511#if EV_USE_MONOTONIC
369static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 512static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
513#endif
514
515#ifndef EV_FD_TO_WIN32_HANDLE
516# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
517#endif
518#ifndef EV_WIN32_HANDLE_TO_FD
519# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
520#endif
521#ifndef EV_WIN32_CLOSE_FD
522# define EV_WIN32_CLOSE_FD(fd) close (fd)
370#endif 523#endif
371 524
372#ifdef _WIN32 525#ifdef _WIN32
373# include "ev_win32.c" 526# include "ev_win32.c"
374#endif 527#endif
375 528
376/*****************************************************************************/ 529/*****************************************************************************/
377 530
531#if EV_AVOID_STDIO
532static void noinline
533ev_printerr (const char *msg)
534{
535 write (STDERR_FILENO, msg, strlen (msg));
536}
537#endif
538
378static void (*syserr_cb)(const char *msg); 539static void (*syserr_cb)(const char *msg);
379 540
380void 541void
381ev_set_syserr_cb (void (*cb)(const char *msg)) 542ev_set_syserr_cb (void (*cb)(const char *msg))
382{ 543{
383 syserr_cb = cb; 544 syserr_cb = cb;
384} 545}
385 546
386static void noinline 547static void noinline
387syserr (const char *msg) 548ev_syserr (const char *msg)
388{ 549{
389 if (!msg) 550 if (!msg)
390 msg = "(libev) system error"; 551 msg = "(libev) system error";
391 552
392 if (syserr_cb) 553 if (syserr_cb)
393 syserr_cb (msg); 554 syserr_cb (msg);
394 else 555 else
395 { 556 {
557#if EV_AVOID_STDIO
558 const char *err = strerror (errno);
559
560 ev_printerr (msg);
561 ev_printerr (": ");
562 ev_printerr (err);
563 ev_printerr ("\n");
564#else
396 perror (msg); 565 perror (msg);
566#endif
397 abort (); 567 abort ();
398 } 568 }
399} 569}
400 570
401static void * 571static void *
402ev_realloc_emul (void *ptr, long size) 572ev_realloc_emul (void *ptr, long size)
403{ 573{
574#if __GLIBC__
575 return realloc (ptr, size);
576#else
404 /* some systems, notably openbsd and darwin, fail to properly 577 /* some systems, notably openbsd and darwin, fail to properly
405 * implement realloc (x, 0) (as required by both ansi c-98 and 578 * implement realloc (x, 0) (as required by both ansi c-89 and
406 * the single unix specification, so work around them here. 579 * the single unix specification, so work around them here.
407 */ 580 */
408 581
409 if (size) 582 if (size)
410 return realloc (ptr, size); 583 return realloc (ptr, size);
411 584
412 free (ptr); 585 free (ptr);
413 return 0; 586 return 0;
587#endif
414} 588}
415 589
416static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 590static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
417 591
418void 592void
… …
426{ 600{
427 ptr = alloc (ptr, size); 601 ptr = alloc (ptr, size);
428 602
429 if (!ptr && size) 603 if (!ptr && size)
430 { 604 {
605#if EV_AVOID_STDIO
606 ev_printerr ("libev: memory allocation failed, aborting.\n");
607#else
431 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 608 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
609#endif
432 abort (); 610 abort ();
433 } 611 }
434 612
435 return ptr; 613 return ptr;
436} 614}
… …
438#define ev_malloc(size) ev_realloc (0, (size)) 616#define ev_malloc(size) ev_realloc (0, (size))
439#define ev_free(ptr) ev_realloc ((ptr), 0) 617#define ev_free(ptr) ev_realloc ((ptr), 0)
440 618
441/*****************************************************************************/ 619/*****************************************************************************/
442 620
621/* set in reify when reification needed */
622#define EV_ANFD_REIFY 1
623
624/* file descriptor info structure */
443typedef struct 625typedef struct
444{ 626{
445 WL head; 627 WL head;
446 unsigned char events; 628 unsigned char events; /* the events watched for */
629 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
630 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
447 unsigned char reify; 631 unsigned char unused;
632#if EV_USE_EPOLL
633 unsigned int egen; /* generation counter to counter epoll bugs */
634#endif
448#if EV_SELECT_IS_WINSOCKET 635#if EV_SELECT_IS_WINSOCKET
449 SOCKET handle; 636 SOCKET handle;
450#endif 637#endif
451} ANFD; 638} ANFD;
452 639
640/* stores the pending event set for a given watcher */
453typedef struct 641typedef struct
454{ 642{
455 W w; 643 W w;
456 int events; 644 int events; /* the pending event set for the given watcher */
457} ANPENDING; 645} ANPENDING;
458 646
459#if EV_USE_INOTIFY 647#if EV_USE_INOTIFY
460/* hash table entry per inotify-id */ 648/* hash table entry per inotify-id */
461typedef struct 649typedef struct
… …
464} ANFS; 652} ANFS;
465#endif 653#endif
466 654
467/* Heap Entry */ 655/* Heap Entry */
468#if EV_HEAP_CACHE_AT 656#if EV_HEAP_CACHE_AT
657 /* a heap element */
469 typedef struct { 658 typedef struct {
470 ev_tstamp at; 659 ev_tstamp at;
471 WT w; 660 WT w;
472 } ANHE; 661 } ANHE;
473 662
474 #define ANHE_w(he) (he).w /* access watcher, read-write */ 663 #define ANHE_w(he) (he).w /* access watcher, read-write */
475 #define ANHE_at(he) (he).at /* access cached at, read-only */ 664 #define ANHE_at(he) (he).at /* access cached at, read-only */
476 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 665 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
477#else 666#else
667 /* a heap element */
478 typedef WT ANHE; 668 typedef WT ANHE;
479 669
480 #define ANHE_w(he) (he) 670 #define ANHE_w(he) (he)
481 #define ANHE_at(he) (he)->at 671 #define ANHE_at(he) (he)->at
482 #define ANHE_at_cache(he) 672 #define ANHE_at_cache(he)
… …
506 696
507 static int ev_default_loop_ptr; 697 static int ev_default_loop_ptr;
508 698
509#endif 699#endif
510 700
701#if EV_MINIMAL < 2
702# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
703# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
704# define EV_INVOKE_PENDING invoke_cb (EV_A)
705#else
706# define EV_RELEASE_CB (void)0
707# define EV_ACQUIRE_CB (void)0
708# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
709#endif
710
711#define EVUNLOOP_RECURSE 0x80
712
511/*****************************************************************************/ 713/*****************************************************************************/
512 714
715#ifndef EV_HAVE_EV_TIME
513ev_tstamp 716ev_tstamp
514ev_time (void) 717ev_time (void)
515{ 718{
516#if EV_USE_REALTIME 719#if EV_USE_REALTIME
720 if (expect_true (have_realtime))
721 {
517 struct timespec ts; 722 struct timespec ts;
518 clock_gettime (CLOCK_REALTIME, &ts); 723 clock_gettime (CLOCK_REALTIME, &ts);
519 return ts.tv_sec + ts.tv_nsec * 1e-9; 724 return ts.tv_sec + ts.tv_nsec * 1e-9;
520#else 725 }
726#endif
727
521 struct timeval tv; 728 struct timeval tv;
522 gettimeofday (&tv, 0); 729 gettimeofday (&tv, 0);
523 return tv.tv_sec + tv.tv_usec * 1e-6; 730 return tv.tv_sec + tv.tv_usec * 1e-6;
524#endif
525} 731}
732#endif
526 733
527ev_tstamp inline_size 734inline_size ev_tstamp
528get_clock (void) 735get_clock (void)
529{ 736{
530#if EV_USE_MONOTONIC 737#if EV_USE_MONOTONIC
531 if (expect_true (have_monotonic)) 738 if (expect_true (have_monotonic))
532 { 739 {
… …
566 773
567 tv.tv_sec = (time_t)delay; 774 tv.tv_sec = (time_t)delay;
568 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 775 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
569 776
570 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 777 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
571 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 778 /* something not guaranteed by newer posix versions, but guaranteed */
572 /* by older ones */ 779 /* by older ones */
573 select (0, 0, 0, 0, &tv); 780 select (0, 0, 0, 0, &tv);
574#endif 781#endif
575 } 782 }
576} 783}
577 784
578/*****************************************************************************/ 785/*****************************************************************************/
579 786
580#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 787#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
581 788
582int inline_size 789/* find a suitable new size for the given array, */
790/* hopefully by rounding to a ncie-to-malloc size */
791inline_size int
583array_nextsize (int elem, int cur, int cnt) 792array_nextsize (int elem, int cur, int cnt)
584{ 793{
585 int ncur = cur + 1; 794 int ncur = cur + 1;
586 795
587 do 796 do
… …
604array_realloc (int elem, void *base, int *cur, int cnt) 813array_realloc (int elem, void *base, int *cur, int cnt)
605{ 814{
606 *cur = array_nextsize (elem, *cur, cnt); 815 *cur = array_nextsize (elem, *cur, cnt);
607 return ev_realloc (base, elem * *cur); 816 return ev_realloc (base, elem * *cur);
608} 817}
818
819#define array_init_zero(base,count) \
820 memset ((void *)(base), 0, sizeof (*(base)) * (count))
609 821
610#define array_needsize(type,base,cur,cnt,init) \ 822#define array_needsize(type,base,cur,cnt,init) \
611 if (expect_false ((cnt) > (cur))) \ 823 if (expect_false ((cnt) > (cur))) \
612 { \ 824 { \
613 int ocur_ = (cur); \ 825 int ocur_ = (cur); \
… …
625 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 837 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
626 } 838 }
627#endif 839#endif
628 840
629#define array_free(stem, idx) \ 841#define array_free(stem, idx) \
630 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 842 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
631 843
632/*****************************************************************************/ 844/*****************************************************************************/
845
846/* dummy callback for pending events */
847static void noinline
848pendingcb (EV_P_ ev_prepare *w, int revents)
849{
850}
633 851
634void noinline 852void noinline
635ev_feed_event (EV_P_ void *w, int revents) 853ev_feed_event (EV_P_ void *w, int revents)
636{ 854{
637 W w_ = (W)w; 855 W w_ = (W)w;
… …
646 pendings [pri][w_->pending - 1].w = w_; 864 pendings [pri][w_->pending - 1].w = w_;
647 pendings [pri][w_->pending - 1].events = revents; 865 pendings [pri][w_->pending - 1].events = revents;
648 } 866 }
649} 867}
650 868
651void inline_speed 869inline_speed void
870feed_reverse (EV_P_ W w)
871{
872 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
873 rfeeds [rfeedcnt++] = w;
874}
875
876inline_size void
877feed_reverse_done (EV_P_ int revents)
878{
879 do
880 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
881 while (rfeedcnt);
882}
883
884inline_speed void
652queue_events (EV_P_ W *events, int eventcnt, int type) 885queue_events (EV_P_ W *events, int eventcnt, int type)
653{ 886{
654 int i; 887 int i;
655 888
656 for (i = 0; i < eventcnt; ++i) 889 for (i = 0; i < eventcnt; ++i)
657 ev_feed_event (EV_A_ events [i], type); 890 ev_feed_event (EV_A_ events [i], type);
658} 891}
659 892
660/*****************************************************************************/ 893/*****************************************************************************/
661 894
662void inline_size 895inline_speed void
663anfds_init (ANFD *base, int count)
664{
665 while (count--)
666 {
667 base->head = 0;
668 base->events = EV_NONE;
669 base->reify = 0;
670
671 ++base;
672 }
673}
674
675void inline_speed
676fd_event (EV_P_ int fd, int revents) 896fd_event_nocheck (EV_P_ int fd, int revents)
677{ 897{
678 ANFD *anfd = anfds + fd; 898 ANFD *anfd = anfds + fd;
679 ev_io *w; 899 ev_io *w;
680 900
681 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 901 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
685 if (ev) 905 if (ev)
686 ev_feed_event (EV_A_ (W)w, ev); 906 ev_feed_event (EV_A_ (W)w, ev);
687 } 907 }
688} 908}
689 909
910/* do not submit kernel events for fds that have reify set */
911/* because that means they changed while we were polling for new events */
912inline_speed void
913fd_event (EV_P_ int fd, int revents)
914{
915 ANFD *anfd = anfds + fd;
916
917 if (expect_true (!anfd->reify))
918 fd_event_nocheck (EV_A_ fd, revents);
919}
920
690void 921void
691ev_feed_fd_event (EV_P_ int fd, int revents) 922ev_feed_fd_event (EV_P_ int fd, int revents)
692{ 923{
693 if (fd >= 0 && fd < anfdmax) 924 if (fd >= 0 && fd < anfdmax)
694 fd_event (EV_A_ fd, revents); 925 fd_event_nocheck (EV_A_ fd, revents);
695} 926}
696 927
697void inline_size 928/* make sure the external fd watch events are in-sync */
929/* with the kernel/libev internal state */
930inline_size void
698fd_reify (EV_P) 931fd_reify (EV_P)
699{ 932{
700 int i; 933 int i;
701 934
702 for (i = 0; i < fdchangecnt; ++i) 935 for (i = 0; i < fdchangecnt; ++i)
… …
712 945
713#if EV_SELECT_IS_WINSOCKET 946#if EV_SELECT_IS_WINSOCKET
714 if (events) 947 if (events)
715 { 948 {
716 unsigned long arg; 949 unsigned long arg;
717 #ifdef EV_FD_TO_WIN32_HANDLE
718 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 950 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
719 #else
720 anfd->handle = _get_osfhandle (fd);
721 #endif
722 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 951 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
723 } 952 }
724#endif 953#endif
725 954
726 { 955 {
727 unsigned char o_events = anfd->events; 956 unsigned char o_events = anfd->events;
728 unsigned char o_reify = anfd->reify; 957 unsigned char o_reify = anfd->reify;
729 958
730 anfd->reify = 0; 959 anfd->reify = 0;
731 anfd->events = events; 960 anfd->events = events;
732 961
733 if (o_events != events || o_reify & EV_IOFDSET) 962 if (o_events != events || o_reify & EV__IOFDSET)
734 backend_modify (EV_A_ fd, o_events, events); 963 backend_modify (EV_A_ fd, o_events, events);
735 } 964 }
736 } 965 }
737 966
738 fdchangecnt = 0; 967 fdchangecnt = 0;
739} 968}
740 969
741void inline_size 970/* something about the given fd changed */
971inline_size void
742fd_change (EV_P_ int fd, int flags) 972fd_change (EV_P_ int fd, int flags)
743{ 973{
744 unsigned char reify = anfds [fd].reify; 974 unsigned char reify = anfds [fd].reify;
745 anfds [fd].reify |= flags; 975 anfds [fd].reify |= flags;
746 976
… …
750 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 980 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
751 fdchanges [fdchangecnt - 1] = fd; 981 fdchanges [fdchangecnt - 1] = fd;
752 } 982 }
753} 983}
754 984
755void inline_speed 985/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
986inline_speed void
756fd_kill (EV_P_ int fd) 987fd_kill (EV_P_ int fd)
757{ 988{
758 ev_io *w; 989 ev_io *w;
759 990
760 while ((w = (ev_io *)anfds [fd].head)) 991 while ((w = (ev_io *)anfds [fd].head))
… …
762 ev_io_stop (EV_A_ w); 993 ev_io_stop (EV_A_ w);
763 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 994 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
764 } 995 }
765} 996}
766 997
767int inline_size 998/* check whether the given fd is actually valid, for error recovery */
999inline_size int
768fd_valid (int fd) 1000fd_valid (int fd)
769{ 1001{
770#ifdef _WIN32 1002#ifdef _WIN32
771 return _get_osfhandle (fd) != -1; 1003 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
772#else 1004#else
773 return fcntl (fd, F_GETFD) != -1; 1005 return fcntl (fd, F_GETFD) != -1;
774#endif 1006#endif
775} 1007}
776 1008
… …
794 1026
795 for (fd = anfdmax; fd--; ) 1027 for (fd = anfdmax; fd--; )
796 if (anfds [fd].events) 1028 if (anfds [fd].events)
797 { 1029 {
798 fd_kill (EV_A_ fd); 1030 fd_kill (EV_A_ fd);
799 return; 1031 break;
800 } 1032 }
801} 1033}
802 1034
803/* usually called after fork if backend needs to re-arm all fds from scratch */ 1035/* usually called after fork if backend needs to re-arm all fds from scratch */
804static void noinline 1036static void noinline
… …
808 1040
809 for (fd = 0; fd < anfdmax; ++fd) 1041 for (fd = 0; fd < anfdmax; ++fd)
810 if (anfds [fd].events) 1042 if (anfds [fd].events)
811 { 1043 {
812 anfds [fd].events = 0; 1044 anfds [fd].events = 0;
1045 anfds [fd].emask = 0;
813 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1046 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
814 } 1047 }
1048}
1049
1050/* used to prepare libev internal fd's */
1051/* this is not fork-safe */
1052inline_speed void
1053fd_intern (int fd)
1054{
1055#ifdef _WIN32
1056 unsigned long arg = 1;
1057 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1058#else
1059 fcntl (fd, F_SETFD, FD_CLOEXEC);
1060 fcntl (fd, F_SETFL, O_NONBLOCK);
1061#endif
815} 1062}
816 1063
817/*****************************************************************************/ 1064/*****************************************************************************/
818 1065
819/* 1066/*
… …
834#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1081#define HEAP0 (DHEAP - 1) /* index of first element in heap */
835#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1082#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
836#define UPHEAP_DONE(p,k) ((p) == (k)) 1083#define UPHEAP_DONE(p,k) ((p) == (k))
837 1084
838/* away from the root */ 1085/* away from the root */
839void inline_speed 1086inline_speed void
840downheap (ANHE *heap, int N, int k) 1087downheap (ANHE *heap, int N, int k)
841{ 1088{
842 ANHE he = heap [k]; 1089 ANHE he = heap [k];
843 ANHE *E = heap + N + HEAP0; 1090 ANHE *E = heap + N + HEAP0;
844 1091
… …
884#define HEAP0 1 1131#define HEAP0 1
885#define HPARENT(k) ((k) >> 1) 1132#define HPARENT(k) ((k) >> 1)
886#define UPHEAP_DONE(p,k) (!(p)) 1133#define UPHEAP_DONE(p,k) (!(p))
887 1134
888/* away from the root */ 1135/* away from the root */
889void inline_speed 1136inline_speed void
890downheap (ANHE *heap, int N, int k) 1137downheap (ANHE *heap, int N, int k)
891{ 1138{
892 ANHE he = heap [k]; 1139 ANHE he = heap [k];
893 1140
894 for (;;) 1141 for (;;)
895 { 1142 {
896 int c = k << 1; 1143 int c = k << 1;
897 1144
898 if (c > N + HEAP0 - 1) 1145 if (c >= N + HEAP0)
899 break; 1146 break;
900 1147
901 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1148 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
902 ? 1 : 0; 1149 ? 1 : 0;
903 1150
… …
914 ev_active (ANHE_w (he)) = k; 1161 ev_active (ANHE_w (he)) = k;
915} 1162}
916#endif 1163#endif
917 1164
918/* towards the root */ 1165/* towards the root */
919void inline_speed 1166inline_speed void
920upheap (ANHE *heap, int k) 1167upheap (ANHE *heap, int k)
921{ 1168{
922 ANHE he = heap [k]; 1169 ANHE he = heap [k];
923 1170
924 for (;;) 1171 for (;;)
… …
935 1182
936 heap [k] = he; 1183 heap [k] = he;
937 ev_active (ANHE_w (he)) = k; 1184 ev_active (ANHE_w (he)) = k;
938} 1185}
939 1186
940void inline_size 1187/* move an element suitably so it is in a correct place */
1188inline_size void
941adjustheap (ANHE *heap, int N, int k) 1189adjustheap (ANHE *heap, int N, int k)
942{ 1190{
943 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1191 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
944 upheap (heap, k); 1192 upheap (heap, k);
945 else 1193 else
946 downheap (heap, N, k); 1194 downheap (heap, N, k);
947} 1195}
948 1196
949/* rebuild the heap: this function is used only once and executed rarely */ 1197/* rebuild the heap: this function is used only once and executed rarely */
950void inline_size 1198inline_size void
951reheap (ANHE *heap, int N) 1199reheap (ANHE *heap, int N)
952{ 1200{
953 int i; 1201 int i;
954 1202
955 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1203 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
958 upheap (heap, i + HEAP0); 1206 upheap (heap, i + HEAP0);
959} 1207}
960 1208
961/*****************************************************************************/ 1209/*****************************************************************************/
962 1210
1211/* associate signal watchers to a signal signal */
963typedef struct 1212typedef struct
964{ 1213{
1214 EV_ATOMIC_T pending;
1215#if EV_MULTIPLICITY
1216 EV_P;
1217#endif
965 WL head; 1218 WL head;
966 EV_ATOMIC_T gotsig;
967} ANSIG; 1219} ANSIG;
968 1220
969static ANSIG *signals; 1221static ANSIG signals [EV_NSIG - 1];
970static int signalmax;
971
972static EV_ATOMIC_T gotsig;
973
974void inline_size
975signals_init (ANSIG *base, int count)
976{
977 while (count--)
978 {
979 base->head = 0;
980 base->gotsig = 0;
981
982 ++base;
983 }
984}
985 1222
986/*****************************************************************************/ 1223/*****************************************************************************/
987 1224
988void inline_speed 1225#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
989fd_intern (int fd)
990{
991#ifdef _WIN32
992 unsigned long arg = 1;
993 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
994#else
995 fcntl (fd, F_SETFD, FD_CLOEXEC);
996 fcntl (fd, F_SETFL, O_NONBLOCK);
997#endif
998}
999 1226
1000static void noinline 1227static void noinline
1001evpipe_init (EV_P) 1228evpipe_init (EV_P)
1002{ 1229{
1003 if (!ev_is_active (&pipeev)) 1230 if (!ev_is_active (&pipe_w))
1004 { 1231 {
1005#if EV_USE_EVENTFD 1232# if EV_USE_EVENTFD
1233 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1234 if (evfd < 0 && errno == EINVAL)
1006 if ((evfd = eventfd (0, 0)) >= 0) 1235 evfd = eventfd (0, 0);
1236
1237 if (evfd >= 0)
1007 { 1238 {
1008 evpipe [0] = -1; 1239 evpipe [0] = -1;
1009 fd_intern (evfd); 1240 fd_intern (evfd); /* doing it twice doesn't hurt */
1010 ev_io_set (&pipeev, evfd, EV_READ); 1241 ev_io_set (&pipe_w, evfd, EV_READ);
1011 } 1242 }
1012 else 1243 else
1013#endif 1244# endif
1014 { 1245 {
1015 while (pipe (evpipe)) 1246 while (pipe (evpipe))
1016 syserr ("(libev) error creating signal/async pipe"); 1247 ev_syserr ("(libev) error creating signal/async pipe");
1017 1248
1018 fd_intern (evpipe [0]); 1249 fd_intern (evpipe [0]);
1019 fd_intern (evpipe [1]); 1250 fd_intern (evpipe [1]);
1020 ev_io_set (&pipeev, evpipe [0], EV_READ); 1251 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1021 } 1252 }
1022 1253
1023 ev_io_start (EV_A_ &pipeev); 1254 ev_io_start (EV_A_ &pipe_w);
1024 ev_unref (EV_A); /* watcher should not keep loop alive */ 1255 ev_unref (EV_A); /* watcher should not keep loop alive */
1025 } 1256 }
1026} 1257}
1027 1258
1028void inline_size 1259inline_size void
1029evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1260evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1030{ 1261{
1031 if (!*flag) 1262 if (!*flag)
1032 { 1263 {
1033 int old_errno = errno; /* save errno because write might clobber it */ 1264 int old_errno = errno; /* save errno because write might clobber it */
1265 char dummy;
1034 1266
1035 *flag = 1; 1267 *flag = 1;
1036 1268
1037#if EV_USE_EVENTFD 1269#if EV_USE_EVENTFD
1038 if (evfd >= 0) 1270 if (evfd >= 0)
… …
1040 uint64_t counter = 1; 1272 uint64_t counter = 1;
1041 write (evfd, &counter, sizeof (uint64_t)); 1273 write (evfd, &counter, sizeof (uint64_t));
1042 } 1274 }
1043 else 1275 else
1044#endif 1276#endif
1045 write (evpipe [1], &old_errno, 1); 1277 write (evpipe [1], &dummy, 1);
1046 1278
1047 errno = old_errno; 1279 errno = old_errno;
1048 } 1280 }
1049} 1281}
1050 1282
1283/* called whenever the libev signal pipe */
1284/* got some events (signal, async) */
1051static void 1285static void
1052pipecb (EV_P_ ev_io *iow, int revents) 1286pipecb (EV_P_ ev_io *iow, int revents)
1053{ 1287{
1288 int i;
1289
1054#if EV_USE_EVENTFD 1290#if EV_USE_EVENTFD
1055 if (evfd >= 0) 1291 if (evfd >= 0)
1056 { 1292 {
1057 uint64_t counter; 1293 uint64_t counter;
1058 read (evfd, &counter, sizeof (uint64_t)); 1294 read (evfd, &counter, sizeof (uint64_t));
… …
1062 { 1298 {
1063 char dummy; 1299 char dummy;
1064 read (evpipe [0], &dummy, 1); 1300 read (evpipe [0], &dummy, 1);
1065 } 1301 }
1066 1302
1067 if (gotsig && ev_is_default_loop (EV_A)) 1303 if (sig_pending)
1068 { 1304 {
1069 int signum; 1305 sig_pending = 0;
1070 gotsig = 0;
1071 1306
1072 for (signum = signalmax; signum--; ) 1307 for (i = EV_NSIG - 1; i--; )
1073 if (signals [signum].gotsig) 1308 if (expect_false (signals [i].pending))
1074 ev_feed_signal_event (EV_A_ signum + 1); 1309 ev_feed_signal_event (EV_A_ i + 1);
1075 } 1310 }
1076 1311
1077#if EV_ASYNC_ENABLE 1312#if EV_ASYNC_ENABLE
1078 if (gotasync) 1313 if (async_pending)
1079 { 1314 {
1080 int i; 1315 async_pending = 0;
1081 gotasync = 0;
1082 1316
1083 for (i = asynccnt; i--; ) 1317 for (i = asynccnt; i--; )
1084 if (asyncs [i]->sent) 1318 if (asyncs [i]->sent)
1085 { 1319 {
1086 asyncs [i]->sent = 0; 1320 asyncs [i]->sent = 0;
… …
1094 1328
1095static void 1329static void
1096ev_sighandler (int signum) 1330ev_sighandler (int signum)
1097{ 1331{
1098#if EV_MULTIPLICITY 1332#if EV_MULTIPLICITY
1099 struct ev_loop *loop = &default_loop_struct; 1333 EV_P = signals [signum - 1].loop;
1100#endif 1334#endif
1101 1335
1102#if _WIN32 1336#ifdef _WIN32
1103 signal (signum, ev_sighandler); 1337 signal (signum, ev_sighandler);
1104#endif 1338#endif
1105 1339
1106 signals [signum - 1].gotsig = 1; 1340 signals [signum - 1].pending = 1;
1107 evpipe_write (EV_A_ &gotsig); 1341 evpipe_write (EV_A_ &sig_pending);
1108} 1342}
1109 1343
1110void noinline 1344void noinline
1111ev_feed_signal_event (EV_P_ int signum) 1345ev_feed_signal_event (EV_P_ int signum)
1112{ 1346{
1113 WL w; 1347 WL w;
1114 1348
1349 if (expect_false (signum <= 0 || signum > EV_NSIG))
1350 return;
1351
1352 --signum;
1353
1115#if EV_MULTIPLICITY 1354#if EV_MULTIPLICITY
1116 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1355 /* it is permissible to try to feed a signal to the wrong loop */
1117#endif 1356 /* or, likely more useful, feeding a signal nobody is waiting for */
1118 1357
1119 --signum; 1358 if (expect_false (signals [signum].loop != EV_A))
1120
1121 if (signum < 0 || signum >= signalmax)
1122 return; 1359 return;
1360#endif
1123 1361
1124 signals [signum].gotsig = 0; 1362 signals [signum].pending = 0;
1125 1363
1126 for (w = signals [signum].head; w; w = w->next) 1364 for (w = signals [signum].head; w; w = w->next)
1127 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1365 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1128} 1366}
1129 1367
1368#if EV_USE_SIGNALFD
1369static void
1370sigfdcb (EV_P_ ev_io *iow, int revents)
1371{
1372 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1373
1374 for (;;)
1375 {
1376 ssize_t res = read (sigfd, si, sizeof (si));
1377
1378 /* not ISO-C, as res might be -1, but works with SuS */
1379 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1380 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1381
1382 if (res < (ssize_t)sizeof (si))
1383 break;
1384 }
1385}
1386#endif
1387
1388#endif
1389
1130/*****************************************************************************/ 1390/*****************************************************************************/
1131 1391
1392#if EV_CHILD_ENABLE
1132static WL childs [EV_PID_HASHSIZE]; 1393static WL childs [EV_PID_HASHSIZE];
1133
1134#ifndef _WIN32
1135 1394
1136static ev_signal childev; 1395static ev_signal childev;
1137 1396
1138#ifndef WIFCONTINUED 1397#ifndef WIFCONTINUED
1139# define WIFCONTINUED(status) 0 1398# define WIFCONTINUED(status) 0
1140#endif 1399#endif
1141 1400
1142void inline_speed 1401/* handle a single child status event */
1402inline_speed void
1143child_reap (EV_P_ int chain, int pid, int status) 1403child_reap (EV_P_ int chain, int pid, int status)
1144{ 1404{
1145 ev_child *w; 1405 ev_child *w;
1146 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1406 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1147 1407
… …
1160 1420
1161#ifndef WCONTINUED 1421#ifndef WCONTINUED
1162# define WCONTINUED 0 1422# define WCONTINUED 0
1163#endif 1423#endif
1164 1424
1425/* called on sigchld etc., calls waitpid */
1165static void 1426static void
1166childcb (EV_P_ ev_signal *sw, int revents) 1427childcb (EV_P_ ev_signal *sw, int revents)
1167{ 1428{
1168 int pid, status; 1429 int pid, status;
1169 1430
… …
1250 /* kqueue is borked on everything but netbsd apparently */ 1511 /* kqueue is borked on everything but netbsd apparently */
1251 /* it usually doesn't work correctly on anything but sockets and pipes */ 1512 /* it usually doesn't work correctly on anything but sockets and pipes */
1252 flags &= ~EVBACKEND_KQUEUE; 1513 flags &= ~EVBACKEND_KQUEUE;
1253#endif 1514#endif
1254#ifdef __APPLE__ 1515#ifdef __APPLE__
1255 // flags &= ~EVBACKEND_KQUEUE; for documentation 1516 /* only select works correctly on that "unix-certified" platform */
1256 flags &= ~EVBACKEND_POLL; 1517 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1518 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1257#endif 1519#endif
1258 1520
1259 return flags; 1521 return flags;
1260} 1522}
1261 1523
… …
1275ev_backend (EV_P) 1537ev_backend (EV_P)
1276{ 1538{
1277 return backend; 1539 return backend;
1278} 1540}
1279 1541
1542#if EV_MINIMAL < 2
1280unsigned int 1543unsigned int
1281ev_loop_count (EV_P) 1544ev_loop_count (EV_P)
1282{ 1545{
1283 return loop_count; 1546 return loop_count;
1284} 1547}
1285 1548
1549unsigned int
1550ev_loop_depth (EV_P)
1551{
1552 return loop_depth;
1553}
1554
1286void 1555void
1287ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1556ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1288{ 1557{
1289 io_blocktime = interval; 1558 io_blocktime = interval;
1290} 1559}
… …
1293ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1562ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1294{ 1563{
1295 timeout_blocktime = interval; 1564 timeout_blocktime = interval;
1296} 1565}
1297 1566
1567void
1568ev_set_userdata (EV_P_ void *data)
1569{
1570 userdata = data;
1571}
1572
1573void *
1574ev_userdata (EV_P)
1575{
1576 return userdata;
1577}
1578
1579void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1580{
1581 invoke_cb = invoke_pending_cb;
1582}
1583
1584void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1585{
1586 release_cb = release;
1587 acquire_cb = acquire;
1588}
1589#endif
1590
1591/* initialise a loop structure, must be zero-initialised */
1298static void noinline 1592static void noinline
1299loop_init (EV_P_ unsigned int flags) 1593loop_init (EV_P_ unsigned int flags)
1300{ 1594{
1301 if (!backend) 1595 if (!backend)
1302 { 1596 {
1597#if EV_USE_REALTIME
1598 if (!have_realtime)
1599 {
1600 struct timespec ts;
1601
1602 if (!clock_gettime (CLOCK_REALTIME, &ts))
1603 have_realtime = 1;
1604 }
1605#endif
1606
1303#if EV_USE_MONOTONIC 1607#if EV_USE_MONOTONIC
1608 if (!have_monotonic)
1304 { 1609 {
1305 struct timespec ts; 1610 struct timespec ts;
1611
1306 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1612 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1307 have_monotonic = 1; 1613 have_monotonic = 1;
1308 } 1614 }
1309#endif 1615#endif
1616
1617 /* pid check not overridable via env */
1618#ifndef _WIN32
1619 if (flags & EVFLAG_FORKCHECK)
1620 curpid = getpid ();
1621#endif
1622
1623 if (!(flags & EVFLAG_NOENV)
1624 && !enable_secure ()
1625 && getenv ("LIBEV_FLAGS"))
1626 flags = atoi (getenv ("LIBEV_FLAGS"));
1310 1627
1311 ev_rt_now = ev_time (); 1628 ev_rt_now = ev_time ();
1312 mn_now = get_clock (); 1629 mn_now = get_clock ();
1313 now_floor = mn_now; 1630 now_floor = mn_now;
1314 rtmn_diff = ev_rt_now - mn_now; 1631 rtmn_diff = ev_rt_now - mn_now;
1632#if EV_MINIMAL < 2
1633 invoke_cb = ev_invoke_pending;
1634#endif
1315 1635
1316 io_blocktime = 0.; 1636 io_blocktime = 0.;
1317 timeout_blocktime = 0.; 1637 timeout_blocktime = 0.;
1318 backend = 0; 1638 backend = 0;
1319 backend_fd = -1; 1639 backend_fd = -1;
1320 gotasync = 0; 1640 sig_pending = 0;
1641#if EV_ASYNC_ENABLE
1642 async_pending = 0;
1643#endif
1321#if EV_USE_INOTIFY 1644#if EV_USE_INOTIFY
1322 fs_fd = -2; 1645 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1323#endif 1646#endif
1324 1647#if EV_USE_SIGNALFD
1325 /* pid check not overridable via env */ 1648 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1326#ifndef _WIN32
1327 if (flags & EVFLAG_FORKCHECK)
1328 curpid = getpid ();
1329#endif 1649#endif
1330
1331 if (!(flags & EVFLAG_NOENV)
1332 && !enable_secure ()
1333 && getenv ("LIBEV_FLAGS"))
1334 flags = atoi (getenv ("LIBEV_FLAGS"));
1335 1650
1336 if (!(flags & 0x0000ffffU)) 1651 if (!(flags & 0x0000ffffU))
1337 flags |= ev_recommended_backends (); 1652 flags |= ev_recommended_backends ();
1338 1653
1339#if EV_USE_PORT 1654#if EV_USE_PORT
… …
1350#endif 1665#endif
1351#if EV_USE_SELECT 1666#if EV_USE_SELECT
1352 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1667 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1353#endif 1668#endif
1354 1669
1670 ev_prepare_init (&pending_w, pendingcb);
1671
1672#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1355 ev_init (&pipeev, pipecb); 1673 ev_init (&pipe_w, pipecb);
1356 ev_set_priority (&pipeev, EV_MAXPRI); 1674 ev_set_priority (&pipe_w, EV_MAXPRI);
1675#endif
1357 } 1676 }
1358} 1677}
1359 1678
1679/* free up a loop structure */
1360static void noinline 1680static void noinline
1361loop_destroy (EV_P) 1681loop_destroy (EV_P)
1362{ 1682{
1363 int i; 1683 int i;
1364 1684
1365 if (ev_is_active (&pipeev)) 1685 if (ev_is_active (&pipe_w))
1366 { 1686 {
1367 ev_ref (EV_A); /* signal watcher */ 1687 /*ev_ref (EV_A);*/
1368 ev_io_stop (EV_A_ &pipeev); 1688 /*ev_io_stop (EV_A_ &pipe_w);*/
1369 1689
1370#if EV_USE_EVENTFD 1690#if EV_USE_EVENTFD
1371 if (evfd >= 0) 1691 if (evfd >= 0)
1372 close (evfd); 1692 close (evfd);
1373#endif 1693#endif
1374 1694
1375 if (evpipe [0] >= 0) 1695 if (evpipe [0] >= 0)
1376 { 1696 {
1377 close (evpipe [0]); 1697 EV_WIN32_CLOSE_FD (evpipe [0]);
1378 close (evpipe [1]); 1698 EV_WIN32_CLOSE_FD (evpipe [1]);
1379 } 1699 }
1380 } 1700 }
1701
1702#if EV_USE_SIGNALFD
1703 if (ev_is_active (&sigfd_w))
1704 close (sigfd);
1705#endif
1381 1706
1382#if EV_USE_INOTIFY 1707#if EV_USE_INOTIFY
1383 if (fs_fd >= 0) 1708 if (fs_fd >= 0)
1384 close (fs_fd); 1709 close (fs_fd);
1385#endif 1710#endif
… …
1409#if EV_IDLE_ENABLE 1734#if EV_IDLE_ENABLE
1410 array_free (idle, [i]); 1735 array_free (idle, [i]);
1411#endif 1736#endif
1412 } 1737 }
1413 1738
1414 ev_free (anfds); anfdmax = 0; 1739 ev_free (anfds); anfds = 0; anfdmax = 0;
1415 1740
1416 /* have to use the microsoft-never-gets-it-right macro */ 1741 /* have to use the microsoft-never-gets-it-right macro */
1742 array_free (rfeed, EMPTY);
1417 array_free (fdchange, EMPTY); 1743 array_free (fdchange, EMPTY);
1418 array_free (timer, EMPTY); 1744 array_free (timer, EMPTY);
1419#if EV_PERIODIC_ENABLE 1745#if EV_PERIODIC_ENABLE
1420 array_free (periodic, EMPTY); 1746 array_free (periodic, EMPTY);
1421#endif 1747#endif
… …
1430 1756
1431 backend = 0; 1757 backend = 0;
1432} 1758}
1433 1759
1434#if EV_USE_INOTIFY 1760#if EV_USE_INOTIFY
1435void inline_size infy_fork (EV_P); 1761inline_size void infy_fork (EV_P);
1436#endif 1762#endif
1437 1763
1438void inline_size 1764inline_size void
1439loop_fork (EV_P) 1765loop_fork (EV_P)
1440{ 1766{
1441#if EV_USE_PORT 1767#if EV_USE_PORT
1442 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1768 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1443#endif 1769#endif
… …
1449#endif 1775#endif
1450#if EV_USE_INOTIFY 1776#if EV_USE_INOTIFY
1451 infy_fork (EV_A); 1777 infy_fork (EV_A);
1452#endif 1778#endif
1453 1779
1454 if (ev_is_active (&pipeev)) 1780 if (ev_is_active (&pipe_w))
1455 { 1781 {
1456 /* this "locks" the handlers against writing to the pipe */ 1782 /* this "locks" the handlers against writing to the pipe */
1457 /* while we modify the fd vars */ 1783 /* while we modify the fd vars */
1458 gotsig = 1; 1784 sig_pending = 1;
1459#if EV_ASYNC_ENABLE 1785#if EV_ASYNC_ENABLE
1460 gotasync = 1; 1786 async_pending = 1;
1461#endif 1787#endif
1462 1788
1463 ev_ref (EV_A); 1789 ev_ref (EV_A);
1464 ev_io_stop (EV_A_ &pipeev); 1790 ev_io_stop (EV_A_ &pipe_w);
1465 1791
1466#if EV_USE_EVENTFD 1792#if EV_USE_EVENTFD
1467 if (evfd >= 0) 1793 if (evfd >= 0)
1468 close (evfd); 1794 close (evfd);
1469#endif 1795#endif
1470 1796
1471 if (evpipe [0] >= 0) 1797 if (evpipe [0] >= 0)
1472 { 1798 {
1473 close (evpipe [0]); 1799 EV_WIN32_CLOSE_FD (evpipe [0]);
1474 close (evpipe [1]); 1800 EV_WIN32_CLOSE_FD (evpipe [1]);
1475 } 1801 }
1476 1802
1803#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1477 evpipe_init (EV_A); 1804 evpipe_init (EV_A);
1478 /* now iterate over everything, in case we missed something */ 1805 /* now iterate over everything, in case we missed something */
1479 pipecb (EV_A_ &pipeev, EV_READ); 1806 pipecb (EV_A_ &pipe_w, EV_READ);
1807#endif
1480 } 1808 }
1481 1809
1482 postfork = 0; 1810 postfork = 0;
1483} 1811}
1484 1812
1485#if EV_MULTIPLICITY 1813#if EV_MULTIPLICITY
1486 1814
1487struct ev_loop * 1815struct ev_loop *
1488ev_loop_new (unsigned int flags) 1816ev_loop_new (unsigned int flags)
1489{ 1817{
1490 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1818 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1491 1819
1492 memset (loop, 0, sizeof (struct ev_loop)); 1820 memset (EV_A, 0, sizeof (struct ev_loop));
1493
1494 loop_init (EV_A_ flags); 1821 loop_init (EV_A_ flags);
1495 1822
1496 if (ev_backend (EV_A)) 1823 if (ev_backend (EV_A))
1497 return loop; 1824 return EV_A;
1498 1825
1499 return 0; 1826 return 0;
1500} 1827}
1501 1828
1502void 1829void
… …
1509void 1836void
1510ev_loop_fork (EV_P) 1837ev_loop_fork (EV_P)
1511{ 1838{
1512 postfork = 1; /* must be in line with ev_default_fork */ 1839 postfork = 1; /* must be in line with ev_default_fork */
1513} 1840}
1841#endif /* multiplicity */
1514 1842
1515#if EV_VERIFY 1843#if EV_VERIFY
1516static void noinline 1844static void noinline
1517verify_watcher (EV_P_ W w) 1845verify_watcher (EV_P_ W w)
1518{ 1846{
1519 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 1847 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1520 1848
1521 if (w->pending) 1849 if (w->pending)
1522 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 1850 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1523} 1851}
1524 1852
1525static void noinline 1853static void noinline
1526verify_heap (EV_P_ ANHE *heap, int N) 1854verify_heap (EV_P_ ANHE *heap, int N)
1527{ 1855{
1528 int i; 1856 int i;
1529 1857
1530 for (i = HEAP0; i < N + HEAP0; ++i) 1858 for (i = HEAP0; i < N + HEAP0; ++i)
1531 { 1859 {
1532 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 1860 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1533 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 1861 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1534 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 1862 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1535 1863
1536 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 1864 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1537 } 1865 }
1538} 1866}
1539 1867
1540static void noinline 1868static void noinline
1541array_verify (EV_P_ W *ws, int cnt) 1869array_verify (EV_P_ W *ws, int cnt)
1542{ 1870{
1543 while (cnt--) 1871 while (cnt--)
1544 { 1872 {
1545 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1873 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1546 verify_watcher (EV_A_ ws [cnt]); 1874 verify_watcher (EV_A_ ws [cnt]);
1547 } 1875 }
1548} 1876}
1549#endif 1877#endif
1550 1878
1879#if EV_MINIMAL < 2
1551void 1880void
1552ev_loop_verify (EV_P) 1881ev_loop_verify (EV_P)
1553{ 1882{
1554#if EV_VERIFY 1883#if EV_VERIFY
1555 int i; 1884 int i;
… …
1557 1886
1558 assert (activecnt >= -1); 1887 assert (activecnt >= -1);
1559 1888
1560 assert (fdchangemax >= fdchangecnt); 1889 assert (fdchangemax >= fdchangecnt);
1561 for (i = 0; i < fdchangecnt; ++i) 1890 for (i = 0; i < fdchangecnt; ++i)
1562 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 1891 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1563 1892
1564 assert (anfdmax >= 0); 1893 assert (anfdmax >= 0);
1565 for (i = 0; i < anfdmax; ++i) 1894 for (i = 0; i < anfdmax; ++i)
1566 for (w = anfds [i].head; w; w = w->next) 1895 for (w = anfds [i].head; w; w = w->next)
1567 { 1896 {
1568 verify_watcher (EV_A_ (W)w); 1897 verify_watcher (EV_A_ (W)w);
1569 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 1898 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1570 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 1899 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1571 } 1900 }
1572 1901
1573 assert (timermax >= timercnt); 1902 assert (timermax >= timercnt);
1574 verify_heap (EV_A_ timers, timercnt); 1903 verify_heap (EV_A_ timers, timercnt);
1575 1904
… …
1596#if EV_ASYNC_ENABLE 1925#if EV_ASYNC_ENABLE
1597 assert (asyncmax >= asynccnt); 1926 assert (asyncmax >= asynccnt);
1598 array_verify (EV_A_ (W *)asyncs, asynccnt); 1927 array_verify (EV_A_ (W *)asyncs, asynccnt);
1599#endif 1928#endif
1600 1929
1930#if EV_PREPARE_ENABLE
1601 assert (preparemax >= preparecnt); 1931 assert (preparemax >= preparecnt);
1602 array_verify (EV_A_ (W *)prepares, preparecnt); 1932 array_verify (EV_A_ (W *)prepares, preparecnt);
1933#endif
1603 1934
1935#if EV_CHECK_ENABLE
1604 assert (checkmax >= checkcnt); 1936 assert (checkmax >= checkcnt);
1605 array_verify (EV_A_ (W *)checks, checkcnt); 1937 array_verify (EV_A_ (W *)checks, checkcnt);
1938#endif
1606 1939
1607# if 0 1940# if 0
1941#if EV_CHILD_ENABLE
1608 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1942 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1609 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 1943 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1610# endif 1944#endif
1611#endif 1945# endif
1946#endif
1612} 1947}
1613 1948#endif
1614#endif /* multiplicity */
1615 1949
1616#if EV_MULTIPLICITY 1950#if EV_MULTIPLICITY
1617struct ev_loop * 1951struct ev_loop *
1618ev_default_loop_init (unsigned int flags) 1952ev_default_loop_init (unsigned int flags)
1619#else 1953#else
… …
1622#endif 1956#endif
1623{ 1957{
1624 if (!ev_default_loop_ptr) 1958 if (!ev_default_loop_ptr)
1625 { 1959 {
1626#if EV_MULTIPLICITY 1960#if EV_MULTIPLICITY
1627 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1961 EV_P = ev_default_loop_ptr = &default_loop_struct;
1628#else 1962#else
1629 ev_default_loop_ptr = 1; 1963 ev_default_loop_ptr = 1;
1630#endif 1964#endif
1631 1965
1632 loop_init (EV_A_ flags); 1966 loop_init (EV_A_ flags);
1633 1967
1634 if (ev_backend (EV_A)) 1968 if (ev_backend (EV_A))
1635 { 1969 {
1636#ifndef _WIN32 1970#if EV_CHILD_ENABLE
1637 ev_signal_init (&childev, childcb, SIGCHLD); 1971 ev_signal_init (&childev, childcb, SIGCHLD);
1638 ev_set_priority (&childev, EV_MAXPRI); 1972 ev_set_priority (&childev, EV_MAXPRI);
1639 ev_signal_start (EV_A_ &childev); 1973 ev_signal_start (EV_A_ &childev);
1640 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1974 ev_unref (EV_A); /* child watcher should not keep loop alive */
1641#endif 1975#endif
… …
1649 1983
1650void 1984void
1651ev_default_destroy (void) 1985ev_default_destroy (void)
1652{ 1986{
1653#if EV_MULTIPLICITY 1987#if EV_MULTIPLICITY
1654 struct ev_loop *loop = ev_default_loop_ptr; 1988 EV_P = ev_default_loop_ptr;
1655#endif 1989#endif
1656 1990
1657#ifndef _WIN32 1991 ev_default_loop_ptr = 0;
1992
1993#if EV_CHILD_ENABLE
1658 ev_ref (EV_A); /* child watcher */ 1994 ev_ref (EV_A); /* child watcher */
1659 ev_signal_stop (EV_A_ &childev); 1995 ev_signal_stop (EV_A_ &childev);
1660#endif 1996#endif
1661 1997
1662 loop_destroy (EV_A); 1998 loop_destroy (EV_A);
… …
1664 2000
1665void 2001void
1666ev_default_fork (void) 2002ev_default_fork (void)
1667{ 2003{
1668#if EV_MULTIPLICITY 2004#if EV_MULTIPLICITY
1669 struct ev_loop *loop = ev_default_loop_ptr; 2005 EV_P = ev_default_loop_ptr;
1670#endif 2006#endif
1671 2007
1672 if (backend)
1673 postfork = 1; /* must be in line with ev_loop_fork */ 2008 postfork = 1; /* must be in line with ev_loop_fork */
1674} 2009}
1675 2010
1676/*****************************************************************************/ 2011/*****************************************************************************/
1677 2012
1678void 2013void
1679ev_invoke (EV_P_ void *w, int revents) 2014ev_invoke (EV_P_ void *w, int revents)
1680{ 2015{
1681 EV_CB_INVOKE ((W)w, revents); 2016 EV_CB_INVOKE ((W)w, revents);
1682} 2017}
1683 2018
1684void inline_speed 2019unsigned int
1685call_pending (EV_P) 2020ev_pending_count (EV_P)
2021{
2022 int pri;
2023 unsigned int count = 0;
2024
2025 for (pri = NUMPRI; pri--; )
2026 count += pendingcnt [pri];
2027
2028 return count;
2029}
2030
2031void noinline
2032ev_invoke_pending (EV_P)
1686{ 2033{
1687 int pri; 2034 int pri;
1688 2035
1689 for (pri = NUMPRI; pri--; ) 2036 for (pri = NUMPRI; pri--; )
1690 while (pendingcnt [pri]) 2037 while (pendingcnt [pri])
1691 { 2038 {
1692 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2039 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1693 2040
1694 if (expect_true (p->w))
1695 {
1696 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2041 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2042 /* ^ this is no longer true, as pending_w could be here */
1697 2043
1698 p->w->pending = 0; 2044 p->w->pending = 0;
1699 EV_CB_INVOKE (p->w, p->events); 2045 EV_CB_INVOKE (p->w, p->events);
1700 EV_FREQUENT_CHECK; 2046 EV_FREQUENT_CHECK;
1701 }
1702 } 2047 }
1703} 2048}
1704 2049
1705#if EV_IDLE_ENABLE 2050#if EV_IDLE_ENABLE
1706void inline_size 2051/* make idle watchers pending. this handles the "call-idle */
2052/* only when higher priorities are idle" logic */
2053inline_size void
1707idle_reify (EV_P) 2054idle_reify (EV_P)
1708{ 2055{
1709 if (expect_false (idleall)) 2056 if (expect_false (idleall))
1710 { 2057 {
1711 int pri; 2058 int pri;
… …
1723 } 2070 }
1724 } 2071 }
1725} 2072}
1726#endif 2073#endif
1727 2074
1728void inline_size 2075/* make timers pending */
2076inline_size void
1729timers_reify (EV_P) 2077timers_reify (EV_P)
1730{ 2078{
1731 EV_FREQUENT_CHECK; 2079 EV_FREQUENT_CHECK;
1732 2080
1733 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2081 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1734 { 2082 {
1735 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2083 do
1736
1737 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1738
1739 /* first reschedule or stop timer */
1740 if (w->repeat)
1741 { 2084 {
2085 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2086
2087 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2088
2089 /* first reschedule or stop timer */
2090 if (w->repeat)
2091 {
1742 ev_at (w) += w->repeat; 2092 ev_at (w) += w->repeat;
1743 if (ev_at (w) < mn_now) 2093 if (ev_at (w) < mn_now)
1744 ev_at (w) = mn_now; 2094 ev_at (w) = mn_now;
1745 2095
1746 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2096 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1747 2097
1748 ANHE_at_cache (timers [HEAP0]); 2098 ANHE_at_cache (timers [HEAP0]);
1749 downheap (timers, timercnt, HEAP0); 2099 downheap (timers, timercnt, HEAP0);
2100 }
2101 else
2102 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2103
2104 EV_FREQUENT_CHECK;
2105 feed_reverse (EV_A_ (W)w);
1750 } 2106 }
1751 else 2107 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1752 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1753 2108
1754 EV_FREQUENT_CHECK;
1755 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 2109 feed_reverse_done (EV_A_ EV_TIMEOUT);
1756 } 2110 }
1757} 2111}
1758 2112
1759#if EV_PERIODIC_ENABLE 2113#if EV_PERIODIC_ENABLE
1760void inline_size 2114/* make periodics pending */
2115inline_size void
1761periodics_reify (EV_P) 2116periodics_reify (EV_P)
1762{ 2117{
1763 EV_FREQUENT_CHECK; 2118 EV_FREQUENT_CHECK;
1764 2119
1765 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2120 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1766 { 2121 {
1767 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2122 int feed_count = 0;
1768 2123
1769 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2124 do
1770
1771 /* first reschedule or stop timer */
1772 if (w->reschedule_cb)
1773 { 2125 {
2126 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2127
2128 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2129
2130 /* first reschedule or stop timer */
2131 if (w->reschedule_cb)
2132 {
1774 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2133 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1775 2134
1776 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2135 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1777 2136
1778 ANHE_at_cache (periodics [HEAP0]); 2137 ANHE_at_cache (periodics [HEAP0]);
1779 downheap (periodics, periodiccnt, HEAP0); 2138 downheap (periodics, periodiccnt, HEAP0);
2139 }
2140 else if (w->interval)
2141 {
2142 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2143 /* if next trigger time is not sufficiently in the future, put it there */
2144 /* this might happen because of floating point inexactness */
2145 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2146 {
2147 ev_at (w) += w->interval;
2148
2149 /* if interval is unreasonably low we might still have a time in the past */
2150 /* so correct this. this will make the periodic very inexact, but the user */
2151 /* has effectively asked to get triggered more often than possible */
2152 if (ev_at (w) < ev_rt_now)
2153 ev_at (w) = ev_rt_now;
2154 }
2155
2156 ANHE_at_cache (periodics [HEAP0]);
2157 downheap (periodics, periodiccnt, HEAP0);
2158 }
2159 else
2160 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2161
2162 EV_FREQUENT_CHECK;
2163 feed_reverse (EV_A_ (W)w);
1780 } 2164 }
1781 else if (w->interval) 2165 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1782 {
1783 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1784 /* if next trigger time is not sufficiently in the future, put it there */
1785 /* this might happen because of floating point inexactness */
1786 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1787 {
1788 ev_at (w) += w->interval;
1789 2166
1790 /* if interval is unreasonably low we might still have a time in the past */
1791 /* so correct this. this will make the periodic very inexact, but the user */
1792 /* has effectively asked to get triggered more often than possible */
1793 if (ev_at (w) < ev_rt_now)
1794 ev_at (w) = ev_rt_now;
1795 }
1796
1797 ANHE_at_cache (periodics [HEAP0]);
1798 downheap (periodics, periodiccnt, HEAP0);
1799 }
1800 else
1801 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1802
1803 EV_FREQUENT_CHECK;
1804 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2167 feed_reverse_done (EV_A_ EV_PERIODIC);
1805 } 2168 }
1806} 2169}
1807 2170
2171/* simply recalculate all periodics */
2172/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1808static void noinline 2173static void noinline
1809periodics_reschedule (EV_P) 2174periodics_reschedule (EV_P)
1810{ 2175{
1811 int i; 2176 int i;
1812 2177
… …
1825 2190
1826 reheap (periodics, periodiccnt); 2191 reheap (periodics, periodiccnt);
1827} 2192}
1828#endif 2193#endif
1829 2194
1830void inline_speed 2195/* adjust all timers by a given offset */
2196static void noinline
2197timers_reschedule (EV_P_ ev_tstamp adjust)
2198{
2199 int i;
2200
2201 for (i = 0; i < timercnt; ++i)
2202 {
2203 ANHE *he = timers + i + HEAP0;
2204 ANHE_w (*he)->at += adjust;
2205 ANHE_at_cache (*he);
2206 }
2207}
2208
2209/* fetch new monotonic and realtime times from the kernel */
2210/* also detect if there was a timejump, and act accordingly */
2211inline_speed void
1831time_update (EV_P_ ev_tstamp max_block) 2212time_update (EV_P_ ev_tstamp max_block)
1832{ 2213{
1833 int i;
1834
1835#if EV_USE_MONOTONIC 2214#if EV_USE_MONOTONIC
1836 if (expect_true (have_monotonic)) 2215 if (expect_true (have_monotonic))
1837 { 2216 {
2217 int i;
1838 ev_tstamp odiff = rtmn_diff; 2218 ev_tstamp odiff = rtmn_diff;
1839 2219
1840 mn_now = get_clock (); 2220 mn_now = get_clock ();
1841 2221
1842 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2222 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1868 ev_rt_now = ev_time (); 2248 ev_rt_now = ev_time ();
1869 mn_now = get_clock (); 2249 mn_now = get_clock ();
1870 now_floor = mn_now; 2250 now_floor = mn_now;
1871 } 2251 }
1872 2252
2253 /* no timer adjustment, as the monotonic clock doesn't jump */
2254 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1873# if EV_PERIODIC_ENABLE 2255# if EV_PERIODIC_ENABLE
1874 periodics_reschedule (EV_A); 2256 periodics_reschedule (EV_A);
1875# endif 2257# endif
1876 /* no timer adjustment, as the monotonic clock doesn't jump */
1877 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1878 } 2258 }
1879 else 2259 else
1880#endif 2260#endif
1881 { 2261 {
1882 ev_rt_now = ev_time (); 2262 ev_rt_now = ev_time ();
1883 2263
1884 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2264 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1885 { 2265 {
2266 /* adjust timers. this is easy, as the offset is the same for all of them */
2267 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1886#if EV_PERIODIC_ENABLE 2268#if EV_PERIODIC_ENABLE
1887 periodics_reschedule (EV_A); 2269 periodics_reschedule (EV_A);
1888#endif 2270#endif
1889 /* adjust timers. this is easy, as the offset is the same for all of them */
1890 for (i = 0; i < timercnt; ++i)
1891 {
1892 ANHE *he = timers + i + HEAP0;
1893 ANHE_w (*he)->at += ev_rt_now - mn_now;
1894 ANHE_at_cache (*he);
1895 }
1896 } 2271 }
1897 2272
1898 mn_now = ev_rt_now; 2273 mn_now = ev_rt_now;
1899 } 2274 }
1900} 2275}
1901 2276
1902void 2277void
1903ev_ref (EV_P)
1904{
1905 ++activecnt;
1906}
1907
1908void
1909ev_unref (EV_P)
1910{
1911 --activecnt;
1912}
1913
1914void
1915ev_now_update (EV_P)
1916{
1917 time_update (EV_A_ 1e100);
1918}
1919
1920static int loop_done;
1921
1922void
1923ev_loop (EV_P_ int flags) 2278ev_loop (EV_P_ int flags)
1924{ 2279{
2280#if EV_MINIMAL < 2
2281 ++loop_depth;
2282#endif
2283
2284 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2285
1925 loop_done = EVUNLOOP_CANCEL; 2286 loop_done = EVUNLOOP_CANCEL;
1926 2287
1927 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2288 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1928 2289
1929 do 2290 do
1930 { 2291 {
1931#if EV_VERIFY >= 2 2292#if EV_VERIFY >= 2
1932 ev_loop_verify (EV_A); 2293 ev_loop_verify (EV_A);
… …
1945 /* we might have forked, so queue fork handlers */ 2306 /* we might have forked, so queue fork handlers */
1946 if (expect_false (postfork)) 2307 if (expect_false (postfork))
1947 if (forkcnt) 2308 if (forkcnt)
1948 { 2309 {
1949 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2310 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1950 call_pending (EV_A); 2311 EV_INVOKE_PENDING;
1951 } 2312 }
1952#endif 2313#endif
1953 2314
2315#if EV_PREPARE_ENABLE
1954 /* queue prepare watchers (and execute them) */ 2316 /* queue prepare watchers (and execute them) */
1955 if (expect_false (preparecnt)) 2317 if (expect_false (preparecnt))
1956 { 2318 {
1957 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2319 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1958 call_pending (EV_A); 2320 EV_INVOKE_PENDING;
1959 } 2321 }
2322#endif
1960 2323
1961 if (expect_false (!activecnt)) 2324 if (expect_false (loop_done))
1962 break; 2325 break;
1963 2326
1964 /* we might have forked, so reify kernel state if necessary */ 2327 /* we might have forked, so reify kernel state if necessary */
1965 if (expect_false (postfork)) 2328 if (expect_false (postfork))
1966 loop_fork (EV_A); 2329 loop_fork (EV_A);
… …
1973 ev_tstamp waittime = 0.; 2336 ev_tstamp waittime = 0.;
1974 ev_tstamp sleeptime = 0.; 2337 ev_tstamp sleeptime = 0.;
1975 2338
1976 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2339 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1977 { 2340 {
2341 /* remember old timestamp for io_blocktime calculation */
2342 ev_tstamp prev_mn_now = mn_now;
2343
1978 /* update time to cancel out callback processing overhead */ 2344 /* update time to cancel out callback processing overhead */
1979 time_update (EV_A_ 1e100); 2345 time_update (EV_A_ 1e100);
1980 2346
1981 waittime = MAX_BLOCKTIME; 2347 waittime = MAX_BLOCKTIME;
1982 2348
… …
1992 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2358 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1993 if (waittime > to) waittime = to; 2359 if (waittime > to) waittime = to;
1994 } 2360 }
1995#endif 2361#endif
1996 2362
2363 /* don't let timeouts decrease the waittime below timeout_blocktime */
1997 if (expect_false (waittime < timeout_blocktime)) 2364 if (expect_false (waittime < timeout_blocktime))
1998 waittime = timeout_blocktime; 2365 waittime = timeout_blocktime;
1999 2366
2000 sleeptime = waittime - backend_fudge; 2367 /* extra check because io_blocktime is commonly 0 */
2001
2002 if (expect_true (sleeptime > io_blocktime)) 2368 if (expect_false (io_blocktime))
2003 sleeptime = io_blocktime;
2004
2005 if (sleeptime)
2006 { 2369 {
2370 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2371
2372 if (sleeptime > waittime - backend_fudge)
2373 sleeptime = waittime - backend_fudge;
2374
2375 if (expect_true (sleeptime > 0.))
2376 {
2007 ev_sleep (sleeptime); 2377 ev_sleep (sleeptime);
2008 waittime -= sleeptime; 2378 waittime -= sleeptime;
2379 }
2009 } 2380 }
2010 } 2381 }
2011 2382
2383#if EV_MINIMAL < 2
2012 ++loop_count; 2384 ++loop_count;
2385#endif
2386 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2013 backend_poll (EV_A_ waittime); 2387 backend_poll (EV_A_ waittime);
2388 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2014 2389
2015 /* update ev_rt_now, do magic */ 2390 /* update ev_rt_now, do magic */
2016 time_update (EV_A_ waittime + sleeptime); 2391 time_update (EV_A_ waittime + sleeptime);
2017 } 2392 }
2018 2393
… …
2025#if EV_IDLE_ENABLE 2400#if EV_IDLE_ENABLE
2026 /* queue idle watchers unless other events are pending */ 2401 /* queue idle watchers unless other events are pending */
2027 idle_reify (EV_A); 2402 idle_reify (EV_A);
2028#endif 2403#endif
2029 2404
2405#if EV_CHECK_ENABLE
2030 /* queue check watchers, to be executed first */ 2406 /* queue check watchers, to be executed first */
2031 if (expect_false (checkcnt)) 2407 if (expect_false (checkcnt))
2032 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2408 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2409#endif
2033 2410
2034 call_pending (EV_A); 2411 EV_INVOKE_PENDING;
2035 } 2412 }
2036 while (expect_true ( 2413 while (expect_true (
2037 activecnt 2414 activecnt
2038 && !loop_done 2415 && !loop_done
2039 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2416 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2040 )); 2417 ));
2041 2418
2042 if (loop_done == EVUNLOOP_ONE) 2419 if (loop_done == EVUNLOOP_ONE)
2043 loop_done = EVUNLOOP_CANCEL; 2420 loop_done = EVUNLOOP_CANCEL;
2421
2422#if EV_MINIMAL < 2
2423 --loop_depth;
2424#endif
2044} 2425}
2045 2426
2046void 2427void
2047ev_unloop (EV_P_ int how) 2428ev_unloop (EV_P_ int how)
2048{ 2429{
2049 loop_done = how; 2430 loop_done = how;
2050} 2431}
2051 2432
2433void
2434ev_ref (EV_P)
2435{
2436 ++activecnt;
2437}
2438
2439void
2440ev_unref (EV_P)
2441{
2442 --activecnt;
2443}
2444
2445void
2446ev_now_update (EV_P)
2447{
2448 time_update (EV_A_ 1e100);
2449}
2450
2451void
2452ev_suspend (EV_P)
2453{
2454 ev_now_update (EV_A);
2455}
2456
2457void
2458ev_resume (EV_P)
2459{
2460 ev_tstamp mn_prev = mn_now;
2461
2462 ev_now_update (EV_A);
2463 timers_reschedule (EV_A_ mn_now - mn_prev);
2464#if EV_PERIODIC_ENABLE
2465 /* TODO: really do this? */
2466 periodics_reschedule (EV_A);
2467#endif
2468}
2469
2052/*****************************************************************************/ 2470/*****************************************************************************/
2471/* singly-linked list management, used when the expected list length is short */
2053 2472
2054void inline_size 2473inline_size void
2055wlist_add (WL *head, WL elem) 2474wlist_add (WL *head, WL elem)
2056{ 2475{
2057 elem->next = *head; 2476 elem->next = *head;
2058 *head = elem; 2477 *head = elem;
2059} 2478}
2060 2479
2061void inline_size 2480inline_size void
2062wlist_del (WL *head, WL elem) 2481wlist_del (WL *head, WL elem)
2063{ 2482{
2064 while (*head) 2483 while (*head)
2065 { 2484 {
2066 if (*head == elem) 2485 if (expect_true (*head == elem))
2067 { 2486 {
2068 *head = elem->next; 2487 *head = elem->next;
2069 return; 2488 break;
2070 } 2489 }
2071 2490
2072 head = &(*head)->next; 2491 head = &(*head)->next;
2073 } 2492 }
2074} 2493}
2075 2494
2076void inline_speed 2495/* internal, faster, version of ev_clear_pending */
2496inline_speed void
2077clear_pending (EV_P_ W w) 2497clear_pending (EV_P_ W w)
2078{ 2498{
2079 if (w->pending) 2499 if (w->pending)
2080 { 2500 {
2081 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2501 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2082 w->pending = 0; 2502 w->pending = 0;
2083 } 2503 }
2084} 2504}
2085 2505
2086int 2506int
… …
2090 int pending = w_->pending; 2510 int pending = w_->pending;
2091 2511
2092 if (expect_true (pending)) 2512 if (expect_true (pending))
2093 { 2513 {
2094 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2514 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2515 p->w = (W)&pending_w;
2095 w_->pending = 0; 2516 w_->pending = 0;
2096 p->w = 0;
2097 return p->events; 2517 return p->events;
2098 } 2518 }
2099 else 2519 else
2100 return 0; 2520 return 0;
2101} 2521}
2102 2522
2103void inline_size 2523inline_size void
2104pri_adjust (EV_P_ W w) 2524pri_adjust (EV_P_ W w)
2105{ 2525{
2106 int pri = w->priority; 2526 int pri = ev_priority (w);
2107 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2527 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2108 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2528 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2109 w->priority = pri; 2529 ev_set_priority (w, pri);
2110} 2530}
2111 2531
2112void inline_speed 2532inline_speed void
2113ev_start (EV_P_ W w, int active) 2533ev_start (EV_P_ W w, int active)
2114{ 2534{
2115 pri_adjust (EV_A_ w); 2535 pri_adjust (EV_A_ w);
2116 w->active = active; 2536 w->active = active;
2117 ev_ref (EV_A); 2537 ev_ref (EV_A);
2118} 2538}
2119 2539
2120void inline_size 2540inline_size void
2121ev_stop (EV_P_ W w) 2541ev_stop (EV_P_ W w)
2122{ 2542{
2123 ev_unref (EV_A); 2543 ev_unref (EV_A);
2124 w->active = 0; 2544 w->active = 0;
2125} 2545}
… …
2132 int fd = w->fd; 2552 int fd = w->fd;
2133 2553
2134 if (expect_false (ev_is_active (w))) 2554 if (expect_false (ev_is_active (w)))
2135 return; 2555 return;
2136 2556
2137 assert (("ev_io_start called with negative fd", fd >= 0)); 2557 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2558 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2138 2559
2139 EV_FREQUENT_CHECK; 2560 EV_FREQUENT_CHECK;
2140 2561
2141 ev_start (EV_A_ (W)w, 1); 2562 ev_start (EV_A_ (W)w, 1);
2142 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2563 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2143 wlist_add (&anfds[fd].head, (WL)w); 2564 wlist_add (&anfds[fd].head, (WL)w);
2144 2565
2145 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2566 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2146 w->events &= ~EV_IOFDSET; 2567 w->events &= ~EV__IOFDSET;
2147 2568
2148 EV_FREQUENT_CHECK; 2569 EV_FREQUENT_CHECK;
2149} 2570}
2150 2571
2151void noinline 2572void noinline
… …
2153{ 2574{
2154 clear_pending (EV_A_ (W)w); 2575 clear_pending (EV_A_ (W)w);
2155 if (expect_false (!ev_is_active (w))) 2576 if (expect_false (!ev_is_active (w)))
2156 return; 2577 return;
2157 2578
2158 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2579 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2159 2580
2160 EV_FREQUENT_CHECK; 2581 EV_FREQUENT_CHECK;
2161 2582
2162 wlist_del (&anfds[w->fd].head, (WL)w); 2583 wlist_del (&anfds[w->fd].head, (WL)w);
2163 ev_stop (EV_A_ (W)w); 2584 ev_stop (EV_A_ (W)w);
… …
2173 if (expect_false (ev_is_active (w))) 2594 if (expect_false (ev_is_active (w)))
2174 return; 2595 return;
2175 2596
2176 ev_at (w) += mn_now; 2597 ev_at (w) += mn_now;
2177 2598
2178 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2599 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2179 2600
2180 EV_FREQUENT_CHECK; 2601 EV_FREQUENT_CHECK;
2181 2602
2182 ++timercnt; 2603 ++timercnt;
2183 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2604 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2186 ANHE_at_cache (timers [ev_active (w)]); 2607 ANHE_at_cache (timers [ev_active (w)]);
2187 upheap (timers, ev_active (w)); 2608 upheap (timers, ev_active (w));
2188 2609
2189 EV_FREQUENT_CHECK; 2610 EV_FREQUENT_CHECK;
2190 2611
2191 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2612 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2192} 2613}
2193 2614
2194void noinline 2615void noinline
2195ev_timer_stop (EV_P_ ev_timer *w) 2616ev_timer_stop (EV_P_ ev_timer *w)
2196{ 2617{
… …
2201 EV_FREQUENT_CHECK; 2622 EV_FREQUENT_CHECK;
2202 2623
2203 { 2624 {
2204 int active = ev_active (w); 2625 int active = ev_active (w);
2205 2626
2206 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2627 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2207 2628
2208 --timercnt; 2629 --timercnt;
2209 2630
2210 if (expect_true (active < timercnt + HEAP0)) 2631 if (expect_true (active < timercnt + HEAP0))
2211 { 2632 {
2212 timers [active] = timers [timercnt + HEAP0]; 2633 timers [active] = timers [timercnt + HEAP0];
2213 adjustheap (timers, timercnt, active); 2634 adjustheap (timers, timercnt, active);
2214 } 2635 }
2215 } 2636 }
2216 2637
2217 EV_FREQUENT_CHECK;
2218
2219 ev_at (w) -= mn_now; 2638 ev_at (w) -= mn_now;
2220 2639
2221 ev_stop (EV_A_ (W)w); 2640 ev_stop (EV_A_ (W)w);
2641
2642 EV_FREQUENT_CHECK;
2222} 2643}
2223 2644
2224void noinline 2645void noinline
2225ev_timer_again (EV_P_ ev_timer *w) 2646ev_timer_again (EV_P_ ev_timer *w)
2226{ 2647{
… …
2244 } 2665 }
2245 2666
2246 EV_FREQUENT_CHECK; 2667 EV_FREQUENT_CHECK;
2247} 2668}
2248 2669
2670ev_tstamp
2671ev_timer_remaining (EV_P_ ev_timer *w)
2672{
2673 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2674}
2675
2249#if EV_PERIODIC_ENABLE 2676#if EV_PERIODIC_ENABLE
2250void noinline 2677void noinline
2251ev_periodic_start (EV_P_ ev_periodic *w) 2678ev_periodic_start (EV_P_ ev_periodic *w)
2252{ 2679{
2253 if (expect_false (ev_is_active (w))) 2680 if (expect_false (ev_is_active (w)))
… …
2255 2682
2256 if (w->reschedule_cb) 2683 if (w->reschedule_cb)
2257 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2684 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2258 else if (w->interval) 2685 else if (w->interval)
2259 { 2686 {
2260 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2687 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2261 /* this formula differs from the one in periodic_reify because we do not always round up */ 2688 /* this formula differs from the one in periodic_reify because we do not always round up */
2262 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2689 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2263 } 2690 }
2264 else 2691 else
2265 ev_at (w) = w->offset; 2692 ev_at (w) = w->offset;
… …
2273 ANHE_at_cache (periodics [ev_active (w)]); 2700 ANHE_at_cache (periodics [ev_active (w)]);
2274 upheap (periodics, ev_active (w)); 2701 upheap (periodics, ev_active (w));
2275 2702
2276 EV_FREQUENT_CHECK; 2703 EV_FREQUENT_CHECK;
2277 2704
2278 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2705 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2279} 2706}
2280 2707
2281void noinline 2708void noinline
2282ev_periodic_stop (EV_P_ ev_periodic *w) 2709ev_periodic_stop (EV_P_ ev_periodic *w)
2283{ 2710{
… …
2288 EV_FREQUENT_CHECK; 2715 EV_FREQUENT_CHECK;
2289 2716
2290 { 2717 {
2291 int active = ev_active (w); 2718 int active = ev_active (w);
2292 2719
2293 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2720 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2294 2721
2295 --periodiccnt; 2722 --periodiccnt;
2296 2723
2297 if (expect_true (active < periodiccnt + HEAP0)) 2724 if (expect_true (active < periodiccnt + HEAP0))
2298 { 2725 {
2299 periodics [active] = periodics [periodiccnt + HEAP0]; 2726 periodics [active] = periodics [periodiccnt + HEAP0];
2300 adjustheap (periodics, periodiccnt, active); 2727 adjustheap (periodics, periodiccnt, active);
2301 } 2728 }
2302 } 2729 }
2303 2730
2304 EV_FREQUENT_CHECK;
2305
2306 ev_stop (EV_A_ (W)w); 2731 ev_stop (EV_A_ (W)w);
2732
2733 EV_FREQUENT_CHECK;
2307} 2734}
2308 2735
2309void noinline 2736void noinline
2310ev_periodic_again (EV_P_ ev_periodic *w) 2737ev_periodic_again (EV_P_ ev_periodic *w)
2311{ 2738{
… …
2317 2744
2318#ifndef SA_RESTART 2745#ifndef SA_RESTART
2319# define SA_RESTART 0 2746# define SA_RESTART 0
2320#endif 2747#endif
2321 2748
2749#if EV_SIGNAL_ENABLE
2750
2322void noinline 2751void noinline
2323ev_signal_start (EV_P_ ev_signal *w) 2752ev_signal_start (EV_P_ ev_signal *w)
2324{ 2753{
2325#if EV_MULTIPLICITY
2326 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2327#endif
2328 if (expect_false (ev_is_active (w))) 2754 if (expect_false (ev_is_active (w)))
2329 return; 2755 return;
2330 2756
2331 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2757 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2332 2758
2333 evpipe_init (EV_A); 2759#if EV_MULTIPLICITY
2760 assert (("libev: a signal must not be attached to two different loops",
2761 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2334 2762
2335 EV_FREQUENT_CHECK; 2763 signals [w->signum - 1].loop = EV_A;
2764#endif
2336 2765
2766 EV_FREQUENT_CHECK;
2767
2768#if EV_USE_SIGNALFD
2769 if (sigfd == -2)
2337 { 2770 {
2338#ifndef _WIN32 2771 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2339 sigset_t full, prev; 2772 if (sigfd < 0 && errno == EINVAL)
2340 sigfillset (&full); 2773 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2341 sigprocmask (SIG_SETMASK, &full, &prev);
2342#endif
2343 2774
2344 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2775 if (sigfd >= 0)
2776 {
2777 fd_intern (sigfd); /* doing it twice will not hurt */
2345 2778
2346#ifndef _WIN32 2779 sigemptyset (&sigfd_set);
2347 sigprocmask (SIG_SETMASK, &prev, 0); 2780
2348#endif 2781 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2782 ev_set_priority (&sigfd_w, EV_MAXPRI);
2783 ev_io_start (EV_A_ &sigfd_w);
2784 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2785 }
2349 } 2786 }
2787
2788 if (sigfd >= 0)
2789 {
2790 /* TODO: check .head */
2791 sigaddset (&sigfd_set, w->signum);
2792 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2793
2794 signalfd (sigfd, &sigfd_set, 0);
2795 }
2796#endif
2350 2797
2351 ev_start (EV_A_ (W)w, 1); 2798 ev_start (EV_A_ (W)w, 1);
2352 wlist_add (&signals [w->signum - 1].head, (WL)w); 2799 wlist_add (&signals [w->signum - 1].head, (WL)w);
2353 2800
2354 if (!((WL)w)->next) 2801 if (!((WL)w)->next)
2802# if EV_USE_SIGNALFD
2803 if (sigfd < 0) /*TODO*/
2804# endif
2355 { 2805 {
2356#if _WIN32 2806# ifdef _WIN32
2807 evpipe_init (EV_A);
2808
2357 signal (w->signum, ev_sighandler); 2809 signal (w->signum, ev_sighandler);
2358#else 2810# else
2359 struct sigaction sa; 2811 struct sigaction sa;
2812
2813 evpipe_init (EV_A);
2814
2360 sa.sa_handler = ev_sighandler; 2815 sa.sa_handler = ev_sighandler;
2361 sigfillset (&sa.sa_mask); 2816 sigfillset (&sa.sa_mask);
2362 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2817 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2363 sigaction (w->signum, &sa, 0); 2818 sigaction (w->signum, &sa, 0);
2819
2820 sigemptyset (&sa.sa_mask);
2821 sigaddset (&sa.sa_mask, w->signum);
2822 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2364#endif 2823#endif
2365 } 2824 }
2366 2825
2367 EV_FREQUENT_CHECK; 2826 EV_FREQUENT_CHECK;
2368} 2827}
2369 2828
2370void noinline 2829void noinline
… …
2378 2837
2379 wlist_del (&signals [w->signum - 1].head, (WL)w); 2838 wlist_del (&signals [w->signum - 1].head, (WL)w);
2380 ev_stop (EV_A_ (W)w); 2839 ev_stop (EV_A_ (W)w);
2381 2840
2382 if (!signals [w->signum - 1].head) 2841 if (!signals [w->signum - 1].head)
2842 {
2843#if EV_MULTIPLICITY
2844 signals [w->signum - 1].loop = 0; /* unattach from signal */
2845#endif
2846#if EV_USE_SIGNALFD
2847 if (sigfd >= 0)
2848 {
2849 sigset_t ss;
2850
2851 sigemptyset (&ss);
2852 sigaddset (&ss, w->signum);
2853 sigdelset (&sigfd_set, w->signum);
2854
2855 signalfd (sigfd, &sigfd_set, 0);
2856 sigprocmask (SIG_UNBLOCK, &ss, 0);
2857 }
2858 else
2859#endif
2383 signal (w->signum, SIG_DFL); 2860 signal (w->signum, SIG_DFL);
2861 }
2384 2862
2385 EV_FREQUENT_CHECK; 2863 EV_FREQUENT_CHECK;
2386} 2864}
2865
2866#endif
2867
2868#if EV_CHILD_ENABLE
2387 2869
2388void 2870void
2389ev_child_start (EV_P_ ev_child *w) 2871ev_child_start (EV_P_ ev_child *w)
2390{ 2872{
2391#if EV_MULTIPLICITY 2873#if EV_MULTIPLICITY
2392 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2874 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2393#endif 2875#endif
2394 if (expect_false (ev_is_active (w))) 2876 if (expect_false (ev_is_active (w)))
2395 return; 2877 return;
2396 2878
2397 EV_FREQUENT_CHECK; 2879 EV_FREQUENT_CHECK;
… …
2415 ev_stop (EV_A_ (W)w); 2897 ev_stop (EV_A_ (W)w);
2416 2898
2417 EV_FREQUENT_CHECK; 2899 EV_FREQUENT_CHECK;
2418} 2900}
2419 2901
2902#endif
2903
2420#if EV_STAT_ENABLE 2904#if EV_STAT_ENABLE
2421 2905
2422# ifdef _WIN32 2906# ifdef _WIN32
2423# undef lstat 2907# undef lstat
2424# define lstat(a,b) _stati64 (a,b) 2908# define lstat(a,b) _stati64 (a,b)
2425# endif 2909# endif
2426 2910
2427#define DEF_STAT_INTERVAL 5.0074891 2911#define DEF_STAT_INTERVAL 5.0074891
2912#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2428#define MIN_STAT_INTERVAL 0.1074891 2913#define MIN_STAT_INTERVAL 0.1074891
2429 2914
2430static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2915static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2431 2916
2432#if EV_USE_INOTIFY 2917#if EV_USE_INOTIFY
2433# define EV_INOTIFY_BUFSIZE 8192 2918
2919/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2920# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2434 2921
2435static void noinline 2922static void noinline
2436infy_add (EV_P_ ev_stat *w) 2923infy_add (EV_P_ ev_stat *w)
2437{ 2924{
2438 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); 2925 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);
2439 2926
2440 if (w->wd < 0) 2927 if (w->wd >= 0)
2928 {
2929 struct statfs sfs;
2930
2931 /* now local changes will be tracked by inotify, but remote changes won't */
2932 /* unless the filesystem is known to be local, we therefore still poll */
2933 /* also do poll on <2.6.25, but with normal frequency */
2934
2935 if (!fs_2625)
2936 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2937 else if (!statfs (w->path, &sfs)
2938 && (sfs.f_type == 0x1373 /* devfs */
2939 || sfs.f_type == 0xEF53 /* ext2/3 */
2940 || sfs.f_type == 0x3153464a /* jfs */
2941 || sfs.f_type == 0x52654973 /* reiser3 */
2942 || sfs.f_type == 0x01021994 /* tempfs */
2943 || sfs.f_type == 0x58465342 /* xfs */))
2944 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2945 else
2946 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2441 { 2947 }
2442 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2948 else
2949 {
2950 /* can't use inotify, continue to stat */
2951 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2443 2952
2444 /* monitor some parent directory for speedup hints */ 2953 /* if path is not there, monitor some parent directory for speedup hints */
2445 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2954 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2446 /* but an efficiency issue only */ 2955 /* but an efficiency issue only */
2447 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2956 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2448 { 2957 {
2449 char path [4096]; 2958 char path [4096];
2450 strcpy (path, w->path); 2959 strcpy (path, w->path);
… …
2454 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2963 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2455 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2964 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2456 2965
2457 char *pend = strrchr (path, '/'); 2966 char *pend = strrchr (path, '/');
2458 2967
2459 if (!pend) 2968 if (!pend || pend == path)
2460 break; /* whoops, no '/', complain to your admin */ 2969 break;
2461 2970
2462 *pend = 0; 2971 *pend = 0;
2463 w->wd = inotify_add_watch (fs_fd, path, mask); 2972 w->wd = inotify_add_watch (fs_fd, path, mask);
2464 } 2973 }
2465 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2974 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2466 } 2975 }
2467 } 2976 }
2468 else
2469 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2470 2977
2471 if (w->wd >= 0) 2978 if (w->wd >= 0)
2472 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2979 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2980
2981 /* now re-arm timer, if required */
2982 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2983 ev_timer_again (EV_A_ &w->timer);
2984 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2473} 2985}
2474 2986
2475static void noinline 2987static void noinline
2476infy_del (EV_P_ ev_stat *w) 2988infy_del (EV_P_ ev_stat *w)
2477{ 2989{
… …
2491 3003
2492static void noinline 3004static void noinline
2493infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3005infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2494{ 3006{
2495 if (slot < 0) 3007 if (slot < 0)
2496 /* overflow, need to check for all hahs slots */ 3008 /* overflow, need to check for all hash slots */
2497 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3009 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2498 infy_wd (EV_A_ slot, wd, ev); 3010 infy_wd (EV_A_ slot, wd, ev);
2499 else 3011 else
2500 { 3012 {
2501 WL w_; 3013 WL w_;
… …
2507 3019
2508 if (w->wd == wd || wd == -1) 3020 if (w->wd == wd || wd == -1)
2509 { 3021 {
2510 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3022 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2511 { 3023 {
3024 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2512 w->wd = -1; 3025 w->wd = -1;
2513 infy_add (EV_A_ w); /* re-add, no matter what */ 3026 infy_add (EV_A_ w); /* re-add, no matter what */
2514 } 3027 }
2515 3028
2516 stat_timer_cb (EV_A_ &w->timer, 0); 3029 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2521 3034
2522static void 3035static void
2523infy_cb (EV_P_ ev_io *w, int revents) 3036infy_cb (EV_P_ ev_io *w, int revents)
2524{ 3037{
2525 char buf [EV_INOTIFY_BUFSIZE]; 3038 char buf [EV_INOTIFY_BUFSIZE];
2526 struct inotify_event *ev = (struct inotify_event *)buf;
2527 int ofs; 3039 int ofs;
2528 int len = read (fs_fd, buf, sizeof (buf)); 3040 int len = read (fs_fd, buf, sizeof (buf));
2529 3041
2530 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3042 for (ofs = 0; ofs < len; )
3043 {
3044 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2531 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3045 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3046 ofs += sizeof (struct inotify_event) + ev->len;
3047 }
2532} 3048}
2533 3049
2534void inline_size 3050inline_size unsigned int
3051ev_linux_version (void)
3052{
3053 struct utsname buf;
3054 unsigned int v;
3055 int i;
3056 char *p = buf.release;
3057
3058 if (uname (&buf))
3059 return 0;
3060
3061 for (i = 3+1; --i; )
3062 {
3063 unsigned int c = 0;
3064
3065 for (;;)
3066 {
3067 if (*p >= '0' && *p <= '9')
3068 c = c * 10 + *p++ - '0';
3069 else
3070 {
3071 p += *p == '.';
3072 break;
3073 }
3074 }
3075
3076 v = (v << 8) | c;
3077 }
3078
3079 return v;
3080}
3081
3082inline_size void
3083ev_check_2625 (EV_P)
3084{
3085 /* kernels < 2.6.25 are borked
3086 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3087 */
3088 if (ev_linux_version () < 0x020619)
3089 return;
3090
3091 fs_2625 = 1;
3092}
3093
3094inline_size int
3095infy_newfd (void)
3096{
3097#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3098 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3099 if (fd >= 0)
3100 return fd;
3101#endif
3102 return inotify_init ();
3103}
3104
3105inline_size void
2535infy_init (EV_P) 3106infy_init (EV_P)
2536{ 3107{
2537 if (fs_fd != -2) 3108 if (fs_fd != -2)
2538 return; 3109 return;
2539 3110
3111 fs_fd = -1;
3112
3113 ev_check_2625 (EV_A);
3114
2540 fs_fd = inotify_init (); 3115 fs_fd = infy_newfd ();
2541 3116
2542 if (fs_fd >= 0) 3117 if (fs_fd >= 0)
2543 { 3118 {
3119 fd_intern (fs_fd);
2544 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3120 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2545 ev_set_priority (&fs_w, EV_MAXPRI); 3121 ev_set_priority (&fs_w, EV_MAXPRI);
2546 ev_io_start (EV_A_ &fs_w); 3122 ev_io_start (EV_A_ &fs_w);
3123 ev_unref (EV_A);
2547 } 3124 }
2548} 3125}
2549 3126
2550void inline_size 3127inline_size void
2551infy_fork (EV_P) 3128infy_fork (EV_P)
2552{ 3129{
2553 int slot; 3130 int slot;
2554 3131
2555 if (fs_fd < 0) 3132 if (fs_fd < 0)
2556 return; 3133 return;
2557 3134
3135 ev_ref (EV_A);
3136 ev_io_stop (EV_A_ &fs_w);
2558 close (fs_fd); 3137 close (fs_fd);
2559 fs_fd = inotify_init (); 3138 fs_fd = infy_newfd ();
3139
3140 if (fs_fd >= 0)
3141 {
3142 fd_intern (fs_fd);
3143 ev_io_set (&fs_w, fs_fd, EV_READ);
3144 ev_io_start (EV_A_ &fs_w);
3145 ev_unref (EV_A);
3146 }
2560 3147
2561 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3148 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2562 { 3149 {
2563 WL w_ = fs_hash [slot].head; 3150 WL w_ = fs_hash [slot].head;
2564 fs_hash [slot].head = 0; 3151 fs_hash [slot].head = 0;
… …
2571 w->wd = -1; 3158 w->wd = -1;
2572 3159
2573 if (fs_fd >= 0) 3160 if (fs_fd >= 0)
2574 infy_add (EV_A_ w); /* re-add, no matter what */ 3161 infy_add (EV_A_ w); /* re-add, no matter what */
2575 else 3162 else
3163 {
3164 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3165 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2576 ev_timer_start (EV_A_ &w->timer); 3166 ev_timer_again (EV_A_ &w->timer);
3167 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3168 }
2577 } 3169 }
2578
2579 } 3170 }
2580} 3171}
2581 3172
2582#endif 3173#endif
2583 3174
… …
2599static void noinline 3190static void noinline
2600stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3191stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2601{ 3192{
2602 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3193 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2603 3194
2604 /* we copy this here each the time so that */ 3195 ev_statdata prev = w->attr;
2605 /* prev has the old value when the callback gets invoked */
2606 w->prev = w->attr;
2607 ev_stat_stat (EV_A_ w); 3196 ev_stat_stat (EV_A_ w);
2608 3197
2609 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3198 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2610 if ( 3199 if (
2611 w->prev.st_dev != w->attr.st_dev 3200 prev.st_dev != w->attr.st_dev
2612 || w->prev.st_ino != w->attr.st_ino 3201 || prev.st_ino != w->attr.st_ino
2613 || w->prev.st_mode != w->attr.st_mode 3202 || prev.st_mode != w->attr.st_mode
2614 || w->prev.st_nlink != w->attr.st_nlink 3203 || prev.st_nlink != w->attr.st_nlink
2615 || w->prev.st_uid != w->attr.st_uid 3204 || prev.st_uid != w->attr.st_uid
2616 || w->prev.st_gid != w->attr.st_gid 3205 || prev.st_gid != w->attr.st_gid
2617 || w->prev.st_rdev != w->attr.st_rdev 3206 || prev.st_rdev != w->attr.st_rdev
2618 || w->prev.st_size != w->attr.st_size 3207 || prev.st_size != w->attr.st_size
2619 || w->prev.st_atime != w->attr.st_atime 3208 || prev.st_atime != w->attr.st_atime
2620 || w->prev.st_mtime != w->attr.st_mtime 3209 || prev.st_mtime != w->attr.st_mtime
2621 || w->prev.st_ctime != w->attr.st_ctime 3210 || prev.st_ctime != w->attr.st_ctime
2622 ) { 3211 ) {
3212 /* we only update w->prev on actual differences */
3213 /* in case we test more often than invoke the callback, */
3214 /* to ensure that prev is always different to attr */
3215 w->prev = prev;
3216
2623 #if EV_USE_INOTIFY 3217 #if EV_USE_INOTIFY
3218 if (fs_fd >= 0)
3219 {
2624 infy_del (EV_A_ w); 3220 infy_del (EV_A_ w);
2625 infy_add (EV_A_ w); 3221 infy_add (EV_A_ w);
2626 ev_stat_stat (EV_A_ w); /* avoid race... */ 3222 ev_stat_stat (EV_A_ w); /* avoid race... */
3223 }
2627 #endif 3224 #endif
2628 3225
2629 ev_feed_event (EV_A_ w, EV_STAT); 3226 ev_feed_event (EV_A_ w, EV_STAT);
2630 } 3227 }
2631} 3228}
… …
2634ev_stat_start (EV_P_ ev_stat *w) 3231ev_stat_start (EV_P_ ev_stat *w)
2635{ 3232{
2636 if (expect_false (ev_is_active (w))) 3233 if (expect_false (ev_is_active (w)))
2637 return; 3234 return;
2638 3235
2639 /* since we use memcmp, we need to clear any padding data etc. */
2640 memset (&w->prev, 0, sizeof (ev_statdata));
2641 memset (&w->attr, 0, sizeof (ev_statdata));
2642
2643 ev_stat_stat (EV_A_ w); 3236 ev_stat_stat (EV_A_ w);
2644 3237
3238 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2645 if (w->interval < MIN_STAT_INTERVAL) 3239 w->interval = MIN_STAT_INTERVAL;
2646 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2647 3240
2648 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3241 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2649 ev_set_priority (&w->timer, ev_priority (w)); 3242 ev_set_priority (&w->timer, ev_priority (w));
2650 3243
2651#if EV_USE_INOTIFY 3244#if EV_USE_INOTIFY
2652 infy_init (EV_A); 3245 infy_init (EV_A);
2653 3246
2654 if (fs_fd >= 0) 3247 if (fs_fd >= 0)
2655 infy_add (EV_A_ w); 3248 infy_add (EV_A_ w);
2656 else 3249 else
2657#endif 3250#endif
3251 {
2658 ev_timer_start (EV_A_ &w->timer); 3252 ev_timer_again (EV_A_ &w->timer);
3253 ev_unref (EV_A);
3254 }
2659 3255
2660 ev_start (EV_A_ (W)w, 1); 3256 ev_start (EV_A_ (W)w, 1);
2661 3257
2662 EV_FREQUENT_CHECK; 3258 EV_FREQUENT_CHECK;
2663} 3259}
… …
2672 EV_FREQUENT_CHECK; 3268 EV_FREQUENT_CHECK;
2673 3269
2674#if EV_USE_INOTIFY 3270#if EV_USE_INOTIFY
2675 infy_del (EV_A_ w); 3271 infy_del (EV_A_ w);
2676#endif 3272#endif
3273
3274 if (ev_is_active (&w->timer))
3275 {
3276 ev_ref (EV_A);
2677 ev_timer_stop (EV_A_ &w->timer); 3277 ev_timer_stop (EV_A_ &w->timer);
3278 }
2678 3279
2679 ev_stop (EV_A_ (W)w); 3280 ev_stop (EV_A_ (W)w);
2680 3281
2681 EV_FREQUENT_CHECK; 3282 EV_FREQUENT_CHECK;
2682} 3283}
… …
2727 3328
2728 EV_FREQUENT_CHECK; 3329 EV_FREQUENT_CHECK;
2729} 3330}
2730#endif 3331#endif
2731 3332
3333#if EV_PREPARE_ENABLE
2732void 3334void
2733ev_prepare_start (EV_P_ ev_prepare *w) 3335ev_prepare_start (EV_P_ ev_prepare *w)
2734{ 3336{
2735 if (expect_false (ev_is_active (w))) 3337 if (expect_false (ev_is_active (w)))
2736 return; 3338 return;
… …
2762 3364
2763 ev_stop (EV_A_ (W)w); 3365 ev_stop (EV_A_ (W)w);
2764 3366
2765 EV_FREQUENT_CHECK; 3367 EV_FREQUENT_CHECK;
2766} 3368}
3369#endif
2767 3370
3371#if EV_CHECK_ENABLE
2768void 3372void
2769ev_check_start (EV_P_ ev_check *w) 3373ev_check_start (EV_P_ ev_check *w)
2770{ 3374{
2771 if (expect_false (ev_is_active (w))) 3375 if (expect_false (ev_is_active (w)))
2772 return; 3376 return;
… …
2798 3402
2799 ev_stop (EV_A_ (W)w); 3403 ev_stop (EV_A_ (W)w);
2800 3404
2801 EV_FREQUENT_CHECK; 3405 EV_FREQUENT_CHECK;
2802} 3406}
3407#endif
2803 3408
2804#if EV_EMBED_ENABLE 3409#if EV_EMBED_ENABLE
2805void noinline 3410void noinline
2806ev_embed_sweep (EV_P_ ev_embed *w) 3411ev_embed_sweep (EV_P_ ev_embed *w)
2807{ 3412{
… …
2823embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3428embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2824{ 3429{
2825 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3430 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2826 3431
2827 { 3432 {
2828 struct ev_loop *loop = w->other; 3433 EV_P = w->other;
2829 3434
2830 while (fdchangecnt) 3435 while (fdchangecnt)
2831 { 3436 {
2832 fd_reify (EV_A); 3437 fd_reify (EV_A);
2833 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3438 ev_loop (EV_A_ EVLOOP_NONBLOCK);
… …
2838static void 3443static void
2839embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 3444embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2840{ 3445{
2841 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3446 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2842 3447
3448 ev_embed_stop (EV_A_ w);
3449
2843 { 3450 {
2844 struct ev_loop *loop = w->other; 3451 EV_P = w->other;
2845 3452
2846 ev_loop_fork (EV_A); 3453 ev_loop_fork (EV_A);
3454 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2847 } 3455 }
3456
3457 ev_embed_start (EV_A_ w);
2848} 3458}
2849 3459
2850#if 0 3460#if 0
2851static void 3461static void
2852embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3462embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2860{ 3470{
2861 if (expect_false (ev_is_active (w))) 3471 if (expect_false (ev_is_active (w)))
2862 return; 3472 return;
2863 3473
2864 { 3474 {
2865 struct ev_loop *loop = w->other; 3475 EV_P = w->other;
2866 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3476 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2867 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3477 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2868 } 3478 }
2869 3479
2870 EV_FREQUENT_CHECK; 3480 EV_FREQUENT_CHECK;
2871 3481
… …
2897 3507
2898 ev_io_stop (EV_A_ &w->io); 3508 ev_io_stop (EV_A_ &w->io);
2899 ev_prepare_stop (EV_A_ &w->prepare); 3509 ev_prepare_stop (EV_A_ &w->prepare);
2900 ev_fork_stop (EV_A_ &w->fork); 3510 ev_fork_stop (EV_A_ &w->fork);
2901 3511
3512 ev_stop (EV_A_ (W)w);
3513
2902 EV_FREQUENT_CHECK; 3514 EV_FREQUENT_CHECK;
2903} 3515}
2904#endif 3516#endif
2905 3517
2906#if EV_FORK_ENABLE 3518#if EV_FORK_ENABLE
… …
2982 3594
2983void 3595void
2984ev_async_send (EV_P_ ev_async *w) 3596ev_async_send (EV_P_ ev_async *w)
2985{ 3597{
2986 w->sent = 1; 3598 w->sent = 1;
2987 evpipe_write (EV_A_ &gotasync); 3599 evpipe_write (EV_A_ &async_pending);
2988} 3600}
2989#endif 3601#endif
2990 3602
2991/*****************************************************************************/ 3603/*****************************************************************************/
2992 3604
… …
3054 ev_timer_set (&once->to, timeout, 0.); 3666 ev_timer_set (&once->to, timeout, 0.);
3055 ev_timer_start (EV_A_ &once->to); 3667 ev_timer_start (EV_A_ &once->to);
3056 } 3668 }
3057} 3669}
3058 3670
3671/*****************************************************************************/
3672
3673#if EV_WALK_ENABLE
3674void
3675ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3676{
3677 int i, j;
3678 ev_watcher_list *wl, *wn;
3679
3680 if (types & (EV_IO | EV_EMBED))
3681 for (i = 0; i < anfdmax; ++i)
3682 for (wl = anfds [i].head; wl; )
3683 {
3684 wn = wl->next;
3685
3686#if EV_EMBED_ENABLE
3687 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3688 {
3689 if (types & EV_EMBED)
3690 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3691 }
3692 else
3693#endif
3694#if EV_USE_INOTIFY
3695 if (ev_cb ((ev_io *)wl) == infy_cb)
3696 ;
3697 else
3698#endif
3699 if ((ev_io *)wl != &pipe_w)
3700 if (types & EV_IO)
3701 cb (EV_A_ EV_IO, wl);
3702
3703 wl = wn;
3704 }
3705
3706 if (types & (EV_TIMER | EV_STAT))
3707 for (i = timercnt + HEAP0; i-- > HEAP0; )
3708#if EV_STAT_ENABLE
3709 /*TODO: timer is not always active*/
3710 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3711 {
3712 if (types & EV_STAT)
3713 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3714 }
3715 else
3716#endif
3717 if (types & EV_TIMER)
3718 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3719
3720#if EV_PERIODIC_ENABLE
3721 if (types & EV_PERIODIC)
3722 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3723 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3724#endif
3725
3726#if EV_IDLE_ENABLE
3727 if (types & EV_IDLE)
3728 for (j = NUMPRI; i--; )
3729 for (i = idlecnt [j]; i--; )
3730 cb (EV_A_ EV_IDLE, idles [j][i]);
3731#endif
3732
3733#if EV_FORK_ENABLE
3734 if (types & EV_FORK)
3735 for (i = forkcnt; i--; )
3736 if (ev_cb (forks [i]) != embed_fork_cb)
3737 cb (EV_A_ EV_FORK, forks [i]);
3738#endif
3739
3740#if EV_ASYNC_ENABLE
3741 if (types & EV_ASYNC)
3742 for (i = asynccnt; i--; )
3743 cb (EV_A_ EV_ASYNC, asyncs [i]);
3744#endif
3745
3746#if EV_PREPARE_ENABLE
3747 if (types & EV_PREPARE)
3748 for (i = preparecnt; i--; )
3749# if EV_EMBED_ENABLE
3750 if (ev_cb (prepares [i]) != embed_prepare_cb)
3751# endif
3752 cb (EV_A_ EV_PREPARE, prepares [i]);
3753#endif
3754
3755#if EV_CHECK_ENABLE
3756 if (types & EV_CHECK)
3757 for (i = checkcnt; i--; )
3758 cb (EV_A_ EV_CHECK, checks [i]);
3759#endif
3760
3761#if EV_SIGNAL_ENABLE
3762 if (types & EV_SIGNAL)
3763 for (i = 0; i < EV_NSIG - 1; ++i)
3764 for (wl = signals [i].head; wl; )
3765 {
3766 wn = wl->next;
3767 cb (EV_A_ EV_SIGNAL, wl);
3768 wl = wn;
3769 }
3770#endif
3771
3772#if EV_CHILD_ENABLE
3773 if (types & EV_CHILD)
3774 for (i = EV_PID_HASHSIZE; i--; )
3775 for (wl = childs [i]; wl; )
3776 {
3777 wn = wl->next;
3778 cb (EV_A_ EV_CHILD, wl);
3779 wl = wn;
3780 }
3781#endif
3782/* EV_STAT 0x00001000 /* stat data changed */
3783/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3784}
3785#endif
3786
3059#if EV_MULTIPLICITY 3787#if EV_MULTIPLICITY
3060 #include "ev_wrap.h" 3788 #include "ev_wrap.h"
3061#endif 3789#endif
3062 3790
3063#ifdef __cplusplus 3791#ifdef __cplusplus

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