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Comparing libev/ev.c (file contents):
Revision 1.249 by root, Wed May 21 23:30:52 2008 UTC vs.
Revision 1.333 by root, Tue Mar 9 08:58:22 2010 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
47# include EV_CONFIG_H 47# include EV_CONFIG_H
48# else 48# else
49# include "config.h" 49# include "config.h"
50# endif 50# endif
51 51
52# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME
56# define EV_USE_REALTIME 0
57# endif
58# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1
60# endif
61# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL)
63# define EV_USE_CLOCK_SYSCALL 0
64# endif
65
52# if HAVE_CLOCK_GETTIME 66# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 67# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 68# define EV_USE_MONOTONIC 1
55# endif 69# endif
56# ifndef EV_USE_REALTIME 70# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 71# define EV_USE_REALTIME 0
58# endif 72# endif
59# else 73# else
60# ifndef EV_USE_MONOTONIC 74# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 75# define EV_USE_MONOTONIC 0
62# endif 76# endif
… …
96# define EV_USE_EPOLL 0 110# define EV_USE_EPOLL 0
97# endif 111# endif
98# endif 112# endif
99 113
100# ifndef EV_USE_KQUEUE 114# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
102# define EV_USE_KQUEUE 1 116# define EV_USE_KQUEUE 1
103# else 117# else
104# define EV_USE_KQUEUE 0 118# define EV_USE_KQUEUE 0
105# endif 119# endif
106# endif 120# endif
… …
119# else 133# else
120# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY 0
121# endif 135# endif
122# endif 136# endif
123 137
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1
141# else
142# define EV_USE_SIGNALFD 0
143# endif
144# endif
145
124# ifndef EV_USE_EVENTFD 146# ifndef EV_USE_EVENTFD
125# if HAVE_EVENTFD 147# if HAVE_EVENTFD
126# define EV_USE_EVENTFD 1 148# define EV_USE_EVENTFD 1
127# else 149# else
128# define EV_USE_EVENTFD 0 150# define EV_USE_EVENTFD 0
129# endif 151# endif
130# endif 152# endif
131 153
132#endif 154#endif
133 155
134#include <math.h> 156#include <math.h>
135#include <stdlib.h> 157#include <stdlib.h>
158#include <string.h>
136#include <fcntl.h> 159#include <fcntl.h>
137#include <stddef.h> 160#include <stddef.h>
138 161
139#include <stdio.h> 162#include <stdio.h>
140 163
141#include <assert.h> 164#include <assert.h>
142#include <errno.h> 165#include <errno.h>
143#include <sys/types.h> 166#include <sys/types.h>
144#include <time.h> 167#include <time.h>
168#include <limits.h>
145 169
146#include <signal.h> 170#include <signal.h>
147 171
148#ifdef EV_H 172#ifdef EV_H
149# include EV_H 173# include EV_H
… …
154#ifndef _WIN32 178#ifndef _WIN32
155# include <sys/time.h> 179# include <sys/time.h>
156# include <sys/wait.h> 180# include <sys/wait.h>
157# include <unistd.h> 181# include <unistd.h>
158#else 182#else
183# include <io.h>
159# define WIN32_LEAN_AND_MEAN 184# define WIN32_LEAN_AND_MEAN
160# include <windows.h> 185# include <windows.h>
161# ifndef EV_SELECT_IS_WINSOCKET 186# ifndef EV_SELECT_IS_WINSOCKET
162# define EV_SELECT_IS_WINSOCKET 1 187# define EV_SELECT_IS_WINSOCKET 1
163# endif 188# endif
189# undef EV_AVOID_STDIO
164#endif 190#endif
165 191
166/* this block tries to deduce configuration from header-defined symbols and defaults */ 192/* this block tries to deduce configuration from header-defined symbols and defaults */
167 193
194/* try to deduce the maximum number of signals on this platform */
195#if defined (EV_NSIG)
196/* use what's provided */
197#elif defined (NSIG)
198# define EV_NSIG (NSIG)
199#elif defined(_NSIG)
200# define EV_NSIG (_NSIG)
201#elif defined (SIGMAX)
202# define EV_NSIG (SIGMAX+1)
203#elif defined (SIG_MAX)
204# define EV_NSIG (SIG_MAX+1)
205#elif defined (_SIG_MAX)
206# define EV_NSIG (_SIG_MAX+1)
207#elif defined (MAXSIG)
208# define EV_NSIG (MAXSIG+1)
209#elif defined (MAX_SIG)
210# define EV_NSIG (MAX_SIG+1)
211#elif defined (SIGARRAYSIZE)
212# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
213#elif defined (_sys_nsig)
214# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
215#else
216# error "unable to find value for NSIG, please report"
217/* to make it compile regardless, just remove the above line */
218# define EV_NSIG 65
219#endif
220
221#ifndef EV_USE_CLOCK_SYSCALL
222# if __linux && __GLIBC__ >= 2
223# define EV_USE_CLOCK_SYSCALL 1
224# else
225# define EV_USE_CLOCK_SYSCALL 0
226# endif
227#endif
228
168#ifndef EV_USE_MONOTONIC 229#ifndef EV_USE_MONOTONIC
230# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
231# define EV_USE_MONOTONIC 1
232# else
169# define EV_USE_MONOTONIC 0 233# define EV_USE_MONOTONIC 0
234# endif
170#endif 235#endif
171 236
172#ifndef EV_USE_REALTIME 237#ifndef EV_USE_REALTIME
173# define EV_USE_REALTIME 0 238# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174#endif 239#endif
175 240
176#ifndef EV_USE_NANOSLEEP 241#ifndef EV_USE_NANOSLEEP
242# if _POSIX_C_SOURCE >= 199309L
243# define EV_USE_NANOSLEEP 1
244# else
177# define EV_USE_NANOSLEEP 0 245# define EV_USE_NANOSLEEP 0
246# endif
178#endif 247#endif
179 248
180#ifndef EV_USE_SELECT 249#ifndef EV_USE_SELECT
181# define EV_USE_SELECT 1 250# define EV_USE_SELECT 1
182#endif 251#endif
… …
235# else 304# else
236# define EV_USE_EVENTFD 0 305# define EV_USE_EVENTFD 0
237# endif 306# endif
238#endif 307#endif
239 308
309#ifndef EV_USE_SIGNALFD
310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
311# define EV_USE_SIGNALFD 1
312# else
313# define EV_USE_SIGNALFD 0
314# endif
315#endif
316
240#if 0 /* debugging */ 317#if 0 /* debugging */
241# define EV_VERIFY 1 318# define EV_VERIFY 3
242# define EV_USE_4HEAP 1 319# define EV_USE_4HEAP 1
243# define EV_HEAP_CACHE_AT 1 320# define EV_HEAP_CACHE_AT 1
244#endif 321#endif
245 322
323#ifndef EV_VERIFY
324# define EV_VERIFY !EV_MINIMAL
325#endif
326
246#ifndef EV_USE_4HEAP 327#ifndef EV_USE_4HEAP
247# define EV_USE_4HEAP !EV_MINIMAL 328# define EV_USE_4HEAP !EV_MINIMAL
248#endif 329#endif
249 330
250#ifndef EV_HEAP_CACHE_AT 331#ifndef EV_HEAP_CACHE_AT
251# define EV_HEAP_CACHE_AT !EV_MINIMAL 332# define EV_HEAP_CACHE_AT !EV_MINIMAL
252#endif 333#endif
253 334
335/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
336/* which makes programs even slower. might work on other unices, too. */
337#if EV_USE_CLOCK_SYSCALL
338# include <syscall.h>
339# ifdef SYS_clock_gettime
340# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
341# undef EV_USE_MONOTONIC
342# define EV_USE_MONOTONIC 1
343# else
344# undef EV_USE_CLOCK_SYSCALL
345# define EV_USE_CLOCK_SYSCALL 0
346# endif
347#endif
348
254/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 349/* this block fixes any misconfiguration where we know we run into trouble otherwise */
350
351#ifdef _AIX
352/* AIX has a completely broken poll.h header */
353# undef EV_USE_POLL
354# define EV_USE_POLL 0
355#endif
255 356
256#ifndef CLOCK_MONOTONIC 357#ifndef CLOCK_MONOTONIC
257# undef EV_USE_MONOTONIC 358# undef EV_USE_MONOTONIC
258# define EV_USE_MONOTONIC 0 359# define EV_USE_MONOTONIC 0
259#endif 360#endif
… …
273# include <sys/select.h> 374# include <sys/select.h>
274# endif 375# endif
275#endif 376#endif
276 377
277#if EV_USE_INOTIFY 378#if EV_USE_INOTIFY
379# include <sys/utsname.h>
380# include <sys/statfs.h>
278# include <sys/inotify.h> 381# include <sys/inotify.h>
382/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
383# ifndef IN_DONT_FOLLOW
384# undef EV_USE_INOTIFY
385# define EV_USE_INOTIFY 0
386# endif
279#endif 387#endif
280 388
281#if EV_SELECT_IS_WINSOCKET 389#if EV_SELECT_IS_WINSOCKET
282# include <winsock.h> 390# include <winsock.h>
283#endif 391#endif
284 392
285#if EV_USE_EVENTFD 393#if EV_USE_EVENTFD
286/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 394/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
287# include <stdint.h> 395# include <stdint.h>
396# ifndef EFD_NONBLOCK
397# define EFD_NONBLOCK O_NONBLOCK
398# endif
399# ifndef EFD_CLOEXEC
400# ifdef O_CLOEXEC
401# define EFD_CLOEXEC O_CLOEXEC
402# else
403# define EFD_CLOEXEC 02000000
404# endif
405# endif
288# ifdef __cplusplus 406# ifdef __cplusplus
289extern "C" { 407extern "C" {
290# endif 408# endif
291int eventfd (unsigned int initval, int flags); 409int (eventfd) (unsigned int initval, int flags);
292# ifdef __cplusplus 410# ifdef __cplusplus
293} 411}
294# endif 412# endif
295#endif 413#endif
296 414
415#if EV_USE_SIGNALFD
416/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
417# include <stdint.h>
418# ifndef SFD_NONBLOCK
419# define SFD_NONBLOCK O_NONBLOCK
420# endif
421# ifndef SFD_CLOEXEC
422# ifdef O_CLOEXEC
423# define SFD_CLOEXEC O_CLOEXEC
424# else
425# define SFD_CLOEXEC 02000000
426# endif
427# endif
428# ifdef __cplusplus
429extern "C" {
430# endif
431int signalfd (int fd, const sigset_t *mask, int flags);
432
433struct signalfd_siginfo
434{
435 uint32_t ssi_signo;
436 char pad[128 - sizeof (uint32_t)];
437};
438# ifdef __cplusplus
439}
440# endif
441#endif
442
443
297/**/ 444/**/
298 445
299/* EV_VERIFY: enable internal consistency checks
300 * undefined or zero: no verification done or available
301 * 1 or higher: ev_loop_verify function available
302 * 2 or higher: ev_loop_verify is called frequently
303 */
304#if EV_VERIFY >= 1 446#if EV_VERIFY >= 3
305# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 447# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
306#else 448#else
307# define EV_FREQUENT_CHECK do { } while (0) 449# define EV_FREQUENT_CHECK do { } while (0)
308#endif 450#endif
309 451
… …
317 */ 459 */
318#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 460#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
319 461
320#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 462#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
321#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 463#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
322/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
323 464
324#if __GNUC__ >= 4 465#if __GNUC__ >= 4
325# define expect(expr,value) __builtin_expect ((expr),(value)) 466# define expect(expr,value) __builtin_expect ((expr),(value))
326# define noinline __attribute__ ((noinline)) 467# define noinline __attribute__ ((noinline))
327#else 468#else
… …
340# define inline_speed static noinline 481# define inline_speed static noinline
341#else 482#else
342# define inline_speed static inline 483# define inline_speed static inline
343#endif 484#endif
344 485
345#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 486#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
487
488#if EV_MINPRI == EV_MAXPRI
489# define ABSPRI(w) (((W)w), 0)
490#else
346#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 491# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
492#endif
347 493
348#define EMPTY /* required for microsofts broken pseudo-c compiler */ 494#define EMPTY /* required for microsofts broken pseudo-c compiler */
349#define EMPTY2(a,b) /* used to suppress some warnings */ 495#define EMPTY2(a,b) /* used to suppress some warnings */
350 496
351typedef ev_watcher *W; 497typedef ev_watcher *W;
… …
353typedef ev_watcher_time *WT; 499typedef ev_watcher_time *WT;
354 500
355#define ev_active(w) ((W)(w))->active 501#define ev_active(w) ((W)(w))->active
356#define ev_at(w) ((WT)(w))->at 502#define ev_at(w) ((WT)(w))->at
357 503
358#if EV_USE_MONOTONIC 504#if EV_USE_REALTIME
359/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 505/* sig_atomic_t is used to avoid per-thread variables or locking but still */
360/* giving it a reasonably high chance of working on typical architetcures */ 506/* giving it a reasonably high chance of working on typical architetcures */
507static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
508#endif
509
510#if EV_USE_MONOTONIC
361static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 511static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
512#endif
513
514#ifndef EV_FD_TO_WIN32_HANDLE
515# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
516#endif
517#ifndef EV_WIN32_HANDLE_TO_FD
518# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
519#endif
520#ifndef EV_WIN32_CLOSE_FD
521# define EV_WIN32_CLOSE_FD(fd) close (fd)
362#endif 522#endif
363 523
364#ifdef _WIN32 524#ifdef _WIN32
365# include "ev_win32.c" 525# include "ev_win32.c"
366#endif 526#endif
367 527
368/*****************************************************************************/ 528/*****************************************************************************/
369 529
530#if EV_AVOID_STDIO
531static void noinline
532ev_printerr (const char *msg)
533{
534 write (STDERR_FILENO, msg, strlen (msg));
535}
536#endif
537
370static void (*syserr_cb)(const char *msg); 538static void (*syserr_cb)(const char *msg);
371 539
372void 540void
373ev_set_syserr_cb (void (*cb)(const char *msg)) 541ev_set_syserr_cb (void (*cb)(const char *msg))
374{ 542{
375 syserr_cb = cb; 543 syserr_cb = cb;
376} 544}
377 545
378static void noinline 546static void noinline
379syserr (const char *msg) 547ev_syserr (const char *msg)
380{ 548{
381 if (!msg) 549 if (!msg)
382 msg = "(libev) system error"; 550 msg = "(libev) system error";
383 551
384 if (syserr_cb) 552 if (syserr_cb)
385 syserr_cb (msg); 553 syserr_cb (msg);
386 else 554 else
387 { 555 {
556#if EV_AVOID_STDIO
557 const char *err = strerror (errno);
558
559 ev_printerr (msg);
560 ev_printerr (": ");
561 ev_printerr (err);
562 ev_printerr ("\n");
563#else
388 perror (msg); 564 perror (msg);
565#endif
389 abort (); 566 abort ();
390 } 567 }
391} 568}
392 569
393static void * 570static void *
… …
418{ 595{
419 ptr = alloc (ptr, size); 596 ptr = alloc (ptr, size);
420 597
421 if (!ptr && size) 598 if (!ptr && size)
422 { 599 {
600#if EV_AVOID_STDIO
601 ev_printerr ("libev: memory allocation failed, aborting.\n");
602#else
423 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 603 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
604#endif
424 abort (); 605 abort ();
425 } 606 }
426 607
427 return ptr; 608 return ptr;
428} 609}
… …
430#define ev_malloc(size) ev_realloc (0, (size)) 611#define ev_malloc(size) ev_realloc (0, (size))
431#define ev_free(ptr) ev_realloc ((ptr), 0) 612#define ev_free(ptr) ev_realloc ((ptr), 0)
432 613
433/*****************************************************************************/ 614/*****************************************************************************/
434 615
616/* set in reify when reification needed */
617#define EV_ANFD_REIFY 1
618
619/* file descriptor info structure */
435typedef struct 620typedef struct
436{ 621{
437 WL head; 622 WL head;
438 unsigned char events; 623 unsigned char events; /* the events watched for */
624 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
625 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
439 unsigned char reify; 626 unsigned char unused;
627#if EV_USE_EPOLL
628 unsigned int egen; /* generation counter to counter epoll bugs */
629#endif
440#if EV_SELECT_IS_WINSOCKET 630#if EV_SELECT_IS_WINSOCKET
441 SOCKET handle; 631 SOCKET handle;
442#endif 632#endif
443} ANFD; 633} ANFD;
444 634
635/* stores the pending event set for a given watcher */
445typedef struct 636typedef struct
446{ 637{
447 W w; 638 W w;
448 int events; 639 int events; /* the pending event set for the given watcher */
449} ANPENDING; 640} ANPENDING;
450 641
451#if EV_USE_INOTIFY 642#if EV_USE_INOTIFY
452/* hash table entry per inotify-id */ 643/* hash table entry per inotify-id */
453typedef struct 644typedef struct
… …
456} ANFS; 647} ANFS;
457#endif 648#endif
458 649
459/* Heap Entry */ 650/* Heap Entry */
460#if EV_HEAP_CACHE_AT 651#if EV_HEAP_CACHE_AT
652 /* a heap element */
461 typedef struct { 653 typedef struct {
462 ev_tstamp at; 654 ev_tstamp at;
463 WT w; 655 WT w;
464 } ANHE; 656 } ANHE;
465 657
466 #define ANHE_w(he) (he).w /* access watcher, read-write */ 658 #define ANHE_w(he) (he).w /* access watcher, read-write */
467 #define ANHE_at(he) (he).at /* access cached at, read-only */ 659 #define ANHE_at(he) (he).at /* access cached at, read-only */
468 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 660 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
469#else 661#else
662 /* a heap element */
470 typedef WT ANHE; 663 typedef WT ANHE;
471 664
472 #define ANHE_w(he) (he) 665 #define ANHE_w(he) (he)
473 #define ANHE_at(he) (he)->at 666 #define ANHE_at(he) (he)->at
474 #define ANHE_at_cache(he) 667 #define ANHE_at_cache(he)
… …
498 691
499 static int ev_default_loop_ptr; 692 static int ev_default_loop_ptr;
500 693
501#endif 694#endif
502 695
696#if EV_MINIMAL < 2
697# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
698# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
699# define EV_INVOKE_PENDING invoke_cb (EV_A)
700#else
701# define EV_RELEASE_CB (void)0
702# define EV_ACQUIRE_CB (void)0
703# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
704#endif
705
706#define EVUNLOOP_RECURSE 0x80
707
503/*****************************************************************************/ 708/*****************************************************************************/
504 709
710#ifndef EV_HAVE_EV_TIME
505ev_tstamp 711ev_tstamp
506ev_time (void) 712ev_time (void)
507{ 713{
508#if EV_USE_REALTIME 714#if EV_USE_REALTIME
715 if (expect_true (have_realtime))
716 {
509 struct timespec ts; 717 struct timespec ts;
510 clock_gettime (CLOCK_REALTIME, &ts); 718 clock_gettime (CLOCK_REALTIME, &ts);
511 return ts.tv_sec + ts.tv_nsec * 1e-9; 719 return ts.tv_sec + ts.tv_nsec * 1e-9;
512#else 720 }
721#endif
722
513 struct timeval tv; 723 struct timeval tv;
514 gettimeofday (&tv, 0); 724 gettimeofday (&tv, 0);
515 return tv.tv_sec + tv.tv_usec * 1e-6; 725 return tv.tv_sec + tv.tv_usec * 1e-6;
516#endif
517} 726}
727#endif
518 728
519ev_tstamp inline_size 729inline_size ev_tstamp
520get_clock (void) 730get_clock (void)
521{ 731{
522#if EV_USE_MONOTONIC 732#if EV_USE_MONOTONIC
523 if (expect_true (have_monotonic)) 733 if (expect_true (have_monotonic))
524 { 734 {
… …
557 struct timeval tv; 767 struct timeval tv;
558 768
559 tv.tv_sec = (time_t)delay; 769 tv.tv_sec = (time_t)delay;
560 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 770 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
561 771
772 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
773 /* something not guaranteed by newer posix versions, but guaranteed */
774 /* by older ones */
562 select (0, 0, 0, 0, &tv); 775 select (0, 0, 0, 0, &tv);
563#endif 776#endif
564 } 777 }
565} 778}
566 779
567/*****************************************************************************/ 780/*****************************************************************************/
568 781
569#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 782#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
570 783
571int inline_size 784/* find a suitable new size for the given array, */
785/* hopefully by rounding to a ncie-to-malloc size */
786inline_size int
572array_nextsize (int elem, int cur, int cnt) 787array_nextsize (int elem, int cur, int cnt)
573{ 788{
574 int ncur = cur + 1; 789 int ncur = cur + 1;
575 790
576 do 791 do
… …
593array_realloc (int elem, void *base, int *cur, int cnt) 808array_realloc (int elem, void *base, int *cur, int cnt)
594{ 809{
595 *cur = array_nextsize (elem, *cur, cnt); 810 *cur = array_nextsize (elem, *cur, cnt);
596 return ev_realloc (base, elem * *cur); 811 return ev_realloc (base, elem * *cur);
597} 812}
813
814#define array_init_zero(base,count) \
815 memset ((void *)(base), 0, sizeof (*(base)) * (count))
598 816
599#define array_needsize(type,base,cur,cnt,init) \ 817#define array_needsize(type,base,cur,cnt,init) \
600 if (expect_false ((cnt) > (cur))) \ 818 if (expect_false ((cnt) > (cur))) \
601 { \ 819 { \
602 int ocur_ = (cur); \ 820 int ocur_ = (cur); \
… …
614 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 832 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
615 } 833 }
616#endif 834#endif
617 835
618#define array_free(stem, idx) \ 836#define array_free(stem, idx) \
619 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 837 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
620 838
621/*****************************************************************************/ 839/*****************************************************************************/
840
841/* dummy callback for pending events */
842static void noinline
843pendingcb (EV_P_ ev_prepare *w, int revents)
844{
845}
622 846
623void noinline 847void noinline
624ev_feed_event (EV_P_ void *w, int revents) 848ev_feed_event (EV_P_ void *w, int revents)
625{ 849{
626 W w_ = (W)w; 850 W w_ = (W)w;
… …
635 pendings [pri][w_->pending - 1].w = w_; 859 pendings [pri][w_->pending - 1].w = w_;
636 pendings [pri][w_->pending - 1].events = revents; 860 pendings [pri][w_->pending - 1].events = revents;
637 } 861 }
638} 862}
639 863
640void inline_speed 864inline_speed void
865feed_reverse (EV_P_ W w)
866{
867 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
868 rfeeds [rfeedcnt++] = w;
869}
870
871inline_size void
872feed_reverse_done (EV_P_ int revents)
873{
874 do
875 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
876 while (rfeedcnt);
877}
878
879inline_speed void
641queue_events (EV_P_ W *events, int eventcnt, int type) 880queue_events (EV_P_ W *events, int eventcnt, int type)
642{ 881{
643 int i; 882 int i;
644 883
645 for (i = 0; i < eventcnt; ++i) 884 for (i = 0; i < eventcnt; ++i)
646 ev_feed_event (EV_A_ events [i], type); 885 ev_feed_event (EV_A_ events [i], type);
647} 886}
648 887
649/*****************************************************************************/ 888/*****************************************************************************/
650 889
651void inline_size 890inline_speed void
652anfds_init (ANFD *base, int count)
653{
654 while (count--)
655 {
656 base->head = 0;
657 base->events = EV_NONE;
658 base->reify = 0;
659
660 ++base;
661 }
662}
663
664void inline_speed
665fd_event (EV_P_ int fd, int revents) 891fd_event_nc (EV_P_ int fd, int revents)
666{ 892{
667 ANFD *anfd = anfds + fd; 893 ANFD *anfd = anfds + fd;
668 ev_io *w; 894 ev_io *w;
669 895
670 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 896 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
674 if (ev) 900 if (ev)
675 ev_feed_event (EV_A_ (W)w, ev); 901 ev_feed_event (EV_A_ (W)w, ev);
676 } 902 }
677} 903}
678 904
905/* do not submit kernel events for fds that have reify set */
906/* because that means they changed while we were polling for new events */
907inline_speed void
908fd_event (EV_P_ int fd, int revents)
909{
910 ANFD *anfd = anfds + fd;
911
912 if (expect_true (!anfd->reify))
913 fd_event_nc (EV_A_ fd, revents);
914}
915
679void 916void
680ev_feed_fd_event (EV_P_ int fd, int revents) 917ev_feed_fd_event (EV_P_ int fd, int revents)
681{ 918{
682 if (fd >= 0 && fd < anfdmax) 919 if (fd >= 0 && fd < anfdmax)
683 fd_event (EV_A_ fd, revents); 920 fd_event_nc (EV_A_ fd, revents);
684} 921}
685 922
686void inline_size 923/* make sure the external fd watch events are in-sync */
924/* with the kernel/libev internal state */
925inline_size void
687fd_reify (EV_P) 926fd_reify (EV_P)
688{ 927{
689 int i; 928 int i;
690 929
691 for (i = 0; i < fdchangecnt; ++i) 930 for (i = 0; i < fdchangecnt; ++i)
… …
700 events |= (unsigned char)w->events; 939 events |= (unsigned char)w->events;
701 940
702#if EV_SELECT_IS_WINSOCKET 941#if EV_SELECT_IS_WINSOCKET
703 if (events) 942 if (events)
704 { 943 {
705 unsigned long argp; 944 unsigned long arg;
706 #ifdef EV_FD_TO_WIN32_HANDLE
707 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 945 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
708 #else
709 anfd->handle = _get_osfhandle (fd);
710 #endif
711 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 946 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
712 } 947 }
713#endif 948#endif
714 949
715 { 950 {
716 unsigned char o_events = anfd->events; 951 unsigned char o_events = anfd->events;
717 unsigned char o_reify = anfd->reify; 952 unsigned char o_reify = anfd->reify;
718 953
719 anfd->reify = 0; 954 anfd->reify = 0;
720 anfd->events = events; 955 anfd->events = events;
721 956
722 if (o_events != events || o_reify & EV_IOFDSET) 957 if (o_events != events || o_reify & EV__IOFDSET)
723 backend_modify (EV_A_ fd, o_events, events); 958 backend_modify (EV_A_ fd, o_events, events);
724 } 959 }
725 } 960 }
726 961
727 fdchangecnt = 0; 962 fdchangecnt = 0;
728} 963}
729 964
730void inline_size 965/* something about the given fd changed */
966inline_size void
731fd_change (EV_P_ int fd, int flags) 967fd_change (EV_P_ int fd, int flags)
732{ 968{
733 unsigned char reify = anfds [fd].reify; 969 unsigned char reify = anfds [fd].reify;
734 anfds [fd].reify |= flags; 970 anfds [fd].reify |= flags;
735 971
… …
739 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 975 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
740 fdchanges [fdchangecnt - 1] = fd; 976 fdchanges [fdchangecnt - 1] = fd;
741 } 977 }
742} 978}
743 979
744void inline_speed 980/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
981inline_speed void
745fd_kill (EV_P_ int fd) 982fd_kill (EV_P_ int fd)
746{ 983{
747 ev_io *w; 984 ev_io *w;
748 985
749 while ((w = (ev_io *)anfds [fd].head)) 986 while ((w = (ev_io *)anfds [fd].head))
… …
751 ev_io_stop (EV_A_ w); 988 ev_io_stop (EV_A_ w);
752 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 989 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
753 } 990 }
754} 991}
755 992
756int inline_size 993/* check whether the given fd is atcually valid, for error recovery */
994inline_size int
757fd_valid (int fd) 995fd_valid (int fd)
758{ 996{
759#ifdef _WIN32 997#ifdef _WIN32
760 return _get_osfhandle (fd) != -1; 998 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
761#else 999#else
762 return fcntl (fd, F_GETFD) != -1; 1000 return fcntl (fd, F_GETFD) != -1;
763#endif 1001#endif
764} 1002}
765 1003
… …
769{ 1007{
770 int fd; 1008 int fd;
771 1009
772 for (fd = 0; fd < anfdmax; ++fd) 1010 for (fd = 0; fd < anfdmax; ++fd)
773 if (anfds [fd].events) 1011 if (anfds [fd].events)
774 if (!fd_valid (fd) == -1 && errno == EBADF) 1012 if (!fd_valid (fd) && errno == EBADF)
775 fd_kill (EV_A_ fd); 1013 fd_kill (EV_A_ fd);
776} 1014}
777 1015
778/* called on ENOMEM in select/poll to kill some fds and retry */ 1016/* called on ENOMEM in select/poll to kill some fds and retry */
779static void noinline 1017static void noinline
… …
783 1021
784 for (fd = anfdmax; fd--; ) 1022 for (fd = anfdmax; fd--; )
785 if (anfds [fd].events) 1023 if (anfds [fd].events)
786 { 1024 {
787 fd_kill (EV_A_ fd); 1025 fd_kill (EV_A_ fd);
788 return; 1026 break;
789 } 1027 }
790} 1028}
791 1029
792/* usually called after fork if backend needs to re-arm all fds from scratch */ 1030/* usually called after fork if backend needs to re-arm all fds from scratch */
793static void noinline 1031static void noinline
… …
797 1035
798 for (fd = 0; fd < anfdmax; ++fd) 1036 for (fd = 0; fd < anfdmax; ++fd)
799 if (anfds [fd].events) 1037 if (anfds [fd].events)
800 { 1038 {
801 anfds [fd].events = 0; 1039 anfds [fd].events = 0;
1040 anfds [fd].emask = 0;
802 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1041 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
803 } 1042 }
804} 1043}
805 1044
806/*****************************************************************************/ 1045/*****************************************************************************/
807 1046
… …
823#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1062#define HEAP0 (DHEAP - 1) /* index of first element in heap */
824#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1063#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
825#define UPHEAP_DONE(p,k) ((p) == (k)) 1064#define UPHEAP_DONE(p,k) ((p) == (k))
826 1065
827/* away from the root */ 1066/* away from the root */
828void inline_speed 1067inline_speed void
829downheap (ANHE *heap, int N, int k) 1068downheap (ANHE *heap, int N, int k)
830{ 1069{
831 ANHE he = heap [k]; 1070 ANHE he = heap [k];
832 ANHE *E = heap + N + HEAP0; 1071 ANHE *E = heap + N + HEAP0;
833 1072
… …
873#define HEAP0 1 1112#define HEAP0 1
874#define HPARENT(k) ((k) >> 1) 1113#define HPARENT(k) ((k) >> 1)
875#define UPHEAP_DONE(p,k) (!(p)) 1114#define UPHEAP_DONE(p,k) (!(p))
876 1115
877/* away from the root */ 1116/* away from the root */
878void inline_speed 1117inline_speed void
879downheap (ANHE *heap, int N, int k) 1118downheap (ANHE *heap, int N, int k)
880{ 1119{
881 ANHE he = heap [k]; 1120 ANHE he = heap [k];
882 1121
883 for (;;) 1122 for (;;)
884 { 1123 {
885 int c = k << 1; 1124 int c = k << 1;
886 1125
887 if (c > N + HEAP0 - 1) 1126 if (c >= N + HEAP0)
888 break; 1127 break;
889 1128
890 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1129 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
891 ? 1 : 0; 1130 ? 1 : 0;
892 1131
… …
903 ev_active (ANHE_w (he)) = k; 1142 ev_active (ANHE_w (he)) = k;
904} 1143}
905#endif 1144#endif
906 1145
907/* towards the root */ 1146/* towards the root */
908void inline_speed 1147inline_speed void
909upheap (ANHE *heap, int k) 1148upheap (ANHE *heap, int k)
910{ 1149{
911 ANHE he = heap [k]; 1150 ANHE he = heap [k];
912 1151
913 for (;;) 1152 for (;;)
… …
924 1163
925 heap [k] = he; 1164 heap [k] = he;
926 ev_active (ANHE_w (he)) = k; 1165 ev_active (ANHE_w (he)) = k;
927} 1166}
928 1167
929void inline_size 1168/* move an element suitably so it is in a correct place */
1169inline_size void
930adjustheap (ANHE *heap, int N, int k) 1170adjustheap (ANHE *heap, int N, int k)
931{ 1171{
932 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1172 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
933 upheap (heap, k); 1173 upheap (heap, k);
934 else 1174 else
935 downheap (heap, N, k); 1175 downheap (heap, N, k);
936} 1176}
937 1177
938/* rebuild the heap: this function is used only once and executed rarely */ 1178/* rebuild the heap: this function is used only once and executed rarely */
939void inline_size 1179inline_size void
940reheap (ANHE *heap, int N) 1180reheap (ANHE *heap, int N)
941{ 1181{
942 int i; 1182 int i;
1183
943 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1184 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
944 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */ 1185 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
945 for (i = 0; i < N; ++i) 1186 for (i = 0; i < N; ++i)
946 upheap (heap, i + HEAP0); 1187 upheap (heap, i + HEAP0);
947} 1188}
948 1189
949#if EV_VERIFY
950static void
951checkheap (ANHE *heap, int N)
952{
953 int i;
954
955 for (i = HEAP0; i < N + HEAP0; ++i)
956 {
957 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
958 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
959 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
960 }
961}
962#endif
963
964/*****************************************************************************/ 1190/*****************************************************************************/
965 1191
1192/* associate signal watchers to a signal signal */
966typedef struct 1193typedef struct
967{ 1194{
1195 EV_ATOMIC_T pending;
1196#if EV_MULTIPLICITY
1197 EV_P;
1198#endif
968 WL head; 1199 WL head;
969 EV_ATOMIC_T gotsig;
970} ANSIG; 1200} ANSIG;
971 1201
972static ANSIG *signals; 1202static ANSIG signals [EV_NSIG - 1];
973static int signalmax;
974
975static EV_ATOMIC_T gotsig;
976
977void inline_size
978signals_init (ANSIG *base, int count)
979{
980 while (count--)
981 {
982 base->head = 0;
983 base->gotsig = 0;
984
985 ++base;
986 }
987}
988 1203
989/*****************************************************************************/ 1204/*****************************************************************************/
990 1205
991void inline_speed 1206/* used to prepare libev internal fd's */
1207/* this is not fork-safe */
1208inline_speed void
992fd_intern (int fd) 1209fd_intern (int fd)
993{ 1210{
994#ifdef _WIN32 1211#ifdef _WIN32
995 int arg = 1; 1212 unsigned long arg = 1;
996 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1213 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
997#else 1214#else
998 fcntl (fd, F_SETFD, FD_CLOEXEC); 1215 fcntl (fd, F_SETFD, FD_CLOEXEC);
999 fcntl (fd, F_SETFL, O_NONBLOCK); 1216 fcntl (fd, F_SETFL, O_NONBLOCK);
1000#endif 1217#endif
1001} 1218}
1002 1219
1003static void noinline 1220static void noinline
1004evpipe_init (EV_P) 1221evpipe_init (EV_P)
1005{ 1222{
1006 if (!ev_is_active (&pipeev)) 1223 if (!ev_is_active (&pipe_w))
1007 { 1224 {
1008#if EV_USE_EVENTFD 1225#if EV_USE_EVENTFD
1226 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1227 if (evfd < 0 && errno == EINVAL)
1009 if ((evfd = eventfd (0, 0)) >= 0) 1228 evfd = eventfd (0, 0);
1229
1230 if (evfd >= 0)
1010 { 1231 {
1011 evpipe [0] = -1; 1232 evpipe [0] = -1;
1012 fd_intern (evfd); 1233 fd_intern (evfd); /* doing it twice doesn't hurt */
1013 ev_io_set (&pipeev, evfd, EV_READ); 1234 ev_io_set (&pipe_w, evfd, EV_READ);
1014 } 1235 }
1015 else 1236 else
1016#endif 1237#endif
1017 { 1238 {
1018 while (pipe (evpipe)) 1239 while (pipe (evpipe))
1019 syserr ("(libev) error creating signal/async pipe"); 1240 ev_syserr ("(libev) error creating signal/async pipe");
1020 1241
1021 fd_intern (evpipe [0]); 1242 fd_intern (evpipe [0]);
1022 fd_intern (evpipe [1]); 1243 fd_intern (evpipe [1]);
1023 ev_io_set (&pipeev, evpipe [0], EV_READ); 1244 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1024 } 1245 }
1025 1246
1026 ev_io_start (EV_A_ &pipeev); 1247 ev_io_start (EV_A_ &pipe_w);
1027 ev_unref (EV_A); /* watcher should not keep loop alive */ 1248 ev_unref (EV_A); /* watcher should not keep loop alive */
1028 } 1249 }
1029} 1250}
1030 1251
1031void inline_size 1252inline_size void
1032evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1253evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1033{ 1254{
1034 if (!*flag) 1255 if (!*flag)
1035 { 1256 {
1036 int old_errno = errno; /* save errno because write might clobber it */ 1257 int old_errno = errno; /* save errno because write might clobber it */
… …
1049 1270
1050 errno = old_errno; 1271 errno = old_errno;
1051 } 1272 }
1052} 1273}
1053 1274
1275/* called whenever the libev signal pipe */
1276/* got some events (signal, async) */
1054static void 1277static void
1055pipecb (EV_P_ ev_io *iow, int revents) 1278pipecb (EV_P_ ev_io *iow, int revents)
1056{ 1279{
1280 int i;
1281
1057#if EV_USE_EVENTFD 1282#if EV_USE_EVENTFD
1058 if (evfd >= 0) 1283 if (evfd >= 0)
1059 { 1284 {
1060 uint64_t counter; 1285 uint64_t counter;
1061 read (evfd, &counter, sizeof (uint64_t)); 1286 read (evfd, &counter, sizeof (uint64_t));
… …
1065 { 1290 {
1066 char dummy; 1291 char dummy;
1067 read (evpipe [0], &dummy, 1); 1292 read (evpipe [0], &dummy, 1);
1068 } 1293 }
1069 1294
1070 if (gotsig && ev_is_default_loop (EV_A)) 1295 if (sig_pending)
1071 { 1296 {
1072 int signum; 1297 sig_pending = 0;
1073 gotsig = 0;
1074 1298
1075 for (signum = signalmax; signum--; ) 1299 for (i = EV_NSIG - 1; i--; )
1076 if (signals [signum].gotsig) 1300 if (expect_false (signals [i].pending))
1077 ev_feed_signal_event (EV_A_ signum + 1); 1301 ev_feed_signal_event (EV_A_ i + 1);
1078 } 1302 }
1079 1303
1080#if EV_ASYNC_ENABLE 1304#if EV_ASYNC_ENABLE
1081 if (gotasync) 1305 if (async_pending)
1082 { 1306 {
1083 int i; 1307 async_pending = 0;
1084 gotasync = 0;
1085 1308
1086 for (i = asynccnt; i--; ) 1309 for (i = asynccnt; i--; )
1087 if (asyncs [i]->sent) 1310 if (asyncs [i]->sent)
1088 { 1311 {
1089 asyncs [i]->sent = 0; 1312 asyncs [i]->sent = 0;
… …
1097 1320
1098static void 1321static void
1099ev_sighandler (int signum) 1322ev_sighandler (int signum)
1100{ 1323{
1101#if EV_MULTIPLICITY 1324#if EV_MULTIPLICITY
1102 struct ev_loop *loop = &default_loop_struct; 1325 EV_P = signals [signum - 1].loop;
1103#endif 1326#endif
1104 1327
1105#if _WIN32 1328#ifdef _WIN32
1106 signal (signum, ev_sighandler); 1329 signal (signum, ev_sighandler);
1107#endif 1330#endif
1108 1331
1109 signals [signum - 1].gotsig = 1; 1332 signals [signum - 1].pending = 1;
1110 evpipe_write (EV_A_ &gotsig); 1333 evpipe_write (EV_A_ &sig_pending);
1111} 1334}
1112 1335
1113void noinline 1336void noinline
1114ev_feed_signal_event (EV_P_ int signum) 1337ev_feed_signal_event (EV_P_ int signum)
1115{ 1338{
1116 WL w; 1339 WL w;
1117 1340
1341 if (expect_false (signum <= 0 || signum > EV_NSIG))
1342 return;
1343
1344 --signum;
1345
1118#if EV_MULTIPLICITY 1346#if EV_MULTIPLICITY
1119 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1347 /* it is permissible to try to feed a signal to the wrong loop */
1120#endif 1348 /* or, likely more useful, feeding a signal nobody is waiting for */
1121 1349
1122 --signum; 1350 if (expect_false (signals [signum].loop != EV_A))
1123
1124 if (signum < 0 || signum >= signalmax)
1125 return; 1351 return;
1352#endif
1126 1353
1127 signals [signum].gotsig = 0; 1354 signals [signum].pending = 0;
1128 1355
1129 for (w = signals [signum].head; w; w = w->next) 1356 for (w = signals [signum].head; w; w = w->next)
1130 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1357 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1131} 1358}
1132 1359
1360#if EV_USE_SIGNALFD
1361static void
1362sigfdcb (EV_P_ ev_io *iow, int revents)
1363{
1364 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1365
1366 for (;;)
1367 {
1368 ssize_t res = read (sigfd, si, sizeof (si));
1369
1370 /* not ISO-C, as res might be -1, but works with SuS */
1371 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1372 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1373
1374 if (res < (ssize_t)sizeof (si))
1375 break;
1376 }
1377}
1378#endif
1379
1133/*****************************************************************************/ 1380/*****************************************************************************/
1134 1381
1135static WL childs [EV_PID_HASHSIZE]; 1382static WL childs [EV_PID_HASHSIZE];
1136 1383
1137#ifndef _WIN32 1384#ifndef _WIN32
… …
1140 1387
1141#ifndef WIFCONTINUED 1388#ifndef WIFCONTINUED
1142# define WIFCONTINUED(status) 0 1389# define WIFCONTINUED(status) 0
1143#endif 1390#endif
1144 1391
1145void inline_speed 1392/* handle a single child status event */
1393inline_speed void
1146child_reap (EV_P_ int chain, int pid, int status) 1394child_reap (EV_P_ int chain, int pid, int status)
1147{ 1395{
1148 ev_child *w; 1396 ev_child *w;
1149 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1397 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1150 1398
… …
1163 1411
1164#ifndef WCONTINUED 1412#ifndef WCONTINUED
1165# define WCONTINUED 0 1413# define WCONTINUED 0
1166#endif 1414#endif
1167 1415
1416/* called on sigchld etc., calls waitpid */
1168static void 1417static void
1169childcb (EV_P_ ev_signal *sw, int revents) 1418childcb (EV_P_ ev_signal *sw, int revents)
1170{ 1419{
1171 int pid, status; 1420 int pid, status;
1172 1421
… …
1253 /* kqueue is borked on everything but netbsd apparently */ 1502 /* kqueue is borked on everything but netbsd apparently */
1254 /* it usually doesn't work correctly on anything but sockets and pipes */ 1503 /* it usually doesn't work correctly on anything but sockets and pipes */
1255 flags &= ~EVBACKEND_KQUEUE; 1504 flags &= ~EVBACKEND_KQUEUE;
1256#endif 1505#endif
1257#ifdef __APPLE__ 1506#ifdef __APPLE__
1258 // flags &= ~EVBACKEND_KQUEUE; for documentation 1507 /* only select works correctly on that "unix-certified" platform */
1259 flags &= ~EVBACKEND_POLL; 1508 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1509 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1260#endif 1510#endif
1261 1511
1262 return flags; 1512 return flags;
1263} 1513}
1264 1514
… …
1278ev_backend (EV_P) 1528ev_backend (EV_P)
1279{ 1529{
1280 return backend; 1530 return backend;
1281} 1531}
1282 1532
1533#if EV_MINIMAL < 2
1283unsigned int 1534unsigned int
1284ev_loop_count (EV_P) 1535ev_loop_count (EV_P)
1285{ 1536{
1286 return loop_count; 1537 return loop_count;
1287} 1538}
1288 1539
1540unsigned int
1541ev_loop_depth (EV_P)
1542{
1543 return loop_depth;
1544}
1545
1289void 1546void
1290ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1547ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1291{ 1548{
1292 io_blocktime = interval; 1549 io_blocktime = interval;
1293} 1550}
… …
1296ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1553ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1297{ 1554{
1298 timeout_blocktime = interval; 1555 timeout_blocktime = interval;
1299} 1556}
1300 1557
1558void
1559ev_set_userdata (EV_P_ void *data)
1560{
1561 userdata = data;
1562}
1563
1564void *
1565ev_userdata (EV_P)
1566{
1567 return userdata;
1568}
1569
1570void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1571{
1572 invoke_cb = invoke_pending_cb;
1573}
1574
1575void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1576{
1577 release_cb = release;
1578 acquire_cb = acquire;
1579}
1580#endif
1581
1582/* initialise a loop structure, must be zero-initialised */
1301static void noinline 1583static void noinline
1302loop_init (EV_P_ unsigned int flags) 1584loop_init (EV_P_ unsigned int flags)
1303{ 1585{
1304 if (!backend) 1586 if (!backend)
1305 { 1587 {
1588#if EV_USE_REALTIME
1589 if (!have_realtime)
1590 {
1591 struct timespec ts;
1592
1593 if (!clock_gettime (CLOCK_REALTIME, &ts))
1594 have_realtime = 1;
1595 }
1596#endif
1597
1306#if EV_USE_MONOTONIC 1598#if EV_USE_MONOTONIC
1599 if (!have_monotonic)
1307 { 1600 {
1308 struct timespec ts; 1601 struct timespec ts;
1602
1309 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1603 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1310 have_monotonic = 1; 1604 have_monotonic = 1;
1311 } 1605 }
1312#endif 1606#endif
1607
1608 /* pid check not overridable via env */
1609#ifndef _WIN32
1610 if (flags & EVFLAG_FORKCHECK)
1611 curpid = getpid ();
1612#endif
1613
1614 if (!(flags & EVFLAG_NOENV)
1615 && !enable_secure ()
1616 && getenv ("LIBEV_FLAGS"))
1617 flags = atoi (getenv ("LIBEV_FLAGS"));
1313 1618
1314 ev_rt_now = ev_time (); 1619 ev_rt_now = ev_time ();
1315 mn_now = get_clock (); 1620 mn_now = get_clock ();
1316 now_floor = mn_now; 1621 now_floor = mn_now;
1317 rtmn_diff = ev_rt_now - mn_now; 1622 rtmn_diff = ev_rt_now - mn_now;
1623#if EV_MINIMAL < 2
1624 invoke_cb = ev_invoke_pending;
1625#endif
1318 1626
1319 io_blocktime = 0.; 1627 io_blocktime = 0.;
1320 timeout_blocktime = 0.; 1628 timeout_blocktime = 0.;
1321 backend = 0; 1629 backend = 0;
1322 backend_fd = -1; 1630 backend_fd = -1;
1323 gotasync = 0; 1631 sig_pending = 0;
1632#if EV_ASYNC_ENABLE
1633 async_pending = 0;
1634#endif
1324#if EV_USE_INOTIFY 1635#if EV_USE_INOTIFY
1325 fs_fd = -2; 1636 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1326#endif 1637#endif
1327 1638#if EV_USE_SIGNALFD
1328 /* pid check not overridable via env */ 1639 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1329#ifndef _WIN32
1330 if (flags & EVFLAG_FORKCHECK)
1331 curpid = getpid ();
1332#endif 1640#endif
1333
1334 if (!(flags & EVFLAG_NOENV)
1335 && !enable_secure ()
1336 && getenv ("LIBEV_FLAGS"))
1337 flags = atoi (getenv ("LIBEV_FLAGS"));
1338 1641
1339 if (!(flags & 0x0000ffffU)) 1642 if (!(flags & 0x0000ffffU))
1340 flags |= ev_recommended_backends (); 1643 flags |= ev_recommended_backends ();
1341 1644
1342#if EV_USE_PORT 1645#if EV_USE_PORT
… …
1353#endif 1656#endif
1354#if EV_USE_SELECT 1657#if EV_USE_SELECT
1355 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1658 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1356#endif 1659#endif
1357 1660
1661 ev_prepare_init (&pending_w, pendingcb);
1662
1358 ev_init (&pipeev, pipecb); 1663 ev_init (&pipe_w, pipecb);
1359 ev_set_priority (&pipeev, EV_MAXPRI); 1664 ev_set_priority (&pipe_w, EV_MAXPRI);
1360 } 1665 }
1361} 1666}
1362 1667
1668/* free up a loop structure */
1363static void noinline 1669static void noinline
1364loop_destroy (EV_P) 1670loop_destroy (EV_P)
1365{ 1671{
1366 int i; 1672 int i;
1367 1673
1368 if (ev_is_active (&pipeev)) 1674 if (ev_is_active (&pipe_w))
1369 { 1675 {
1370 ev_ref (EV_A); /* signal watcher */ 1676 /*ev_ref (EV_A);*/
1371 ev_io_stop (EV_A_ &pipeev); 1677 /*ev_io_stop (EV_A_ &pipe_w);*/
1372 1678
1373#if EV_USE_EVENTFD 1679#if EV_USE_EVENTFD
1374 if (evfd >= 0) 1680 if (evfd >= 0)
1375 close (evfd); 1681 close (evfd);
1376#endif 1682#endif
1377 1683
1378 if (evpipe [0] >= 0) 1684 if (evpipe [0] >= 0)
1379 { 1685 {
1380 close (evpipe [0]); 1686 EV_WIN32_CLOSE_FD (evpipe [0]);
1381 close (evpipe [1]); 1687 EV_WIN32_CLOSE_FD (evpipe [1]);
1382 } 1688 }
1383 } 1689 }
1690
1691#if EV_USE_SIGNALFD
1692 if (ev_is_active (&sigfd_w))
1693 close (sigfd);
1694#endif
1384 1695
1385#if EV_USE_INOTIFY 1696#if EV_USE_INOTIFY
1386 if (fs_fd >= 0) 1697 if (fs_fd >= 0)
1387 close (fs_fd); 1698 close (fs_fd);
1388#endif 1699#endif
… …
1412#if EV_IDLE_ENABLE 1723#if EV_IDLE_ENABLE
1413 array_free (idle, [i]); 1724 array_free (idle, [i]);
1414#endif 1725#endif
1415 } 1726 }
1416 1727
1417 ev_free (anfds); anfdmax = 0; 1728 ev_free (anfds); anfds = 0; anfdmax = 0;
1418 1729
1419 /* have to use the microsoft-never-gets-it-right macro */ 1730 /* have to use the microsoft-never-gets-it-right macro */
1731 array_free (rfeed, EMPTY);
1420 array_free (fdchange, EMPTY); 1732 array_free (fdchange, EMPTY);
1421 array_free (timer, EMPTY); 1733 array_free (timer, EMPTY);
1422#if EV_PERIODIC_ENABLE 1734#if EV_PERIODIC_ENABLE
1423 array_free (periodic, EMPTY); 1735 array_free (periodic, EMPTY);
1424#endif 1736#endif
… …
1433 1745
1434 backend = 0; 1746 backend = 0;
1435} 1747}
1436 1748
1437#if EV_USE_INOTIFY 1749#if EV_USE_INOTIFY
1438void inline_size infy_fork (EV_P); 1750inline_size void infy_fork (EV_P);
1439#endif 1751#endif
1440 1752
1441void inline_size 1753inline_size void
1442loop_fork (EV_P) 1754loop_fork (EV_P)
1443{ 1755{
1444#if EV_USE_PORT 1756#if EV_USE_PORT
1445 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1757 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1446#endif 1758#endif
… …
1452#endif 1764#endif
1453#if EV_USE_INOTIFY 1765#if EV_USE_INOTIFY
1454 infy_fork (EV_A); 1766 infy_fork (EV_A);
1455#endif 1767#endif
1456 1768
1457 if (ev_is_active (&pipeev)) 1769 if (ev_is_active (&pipe_w))
1458 { 1770 {
1459 /* this "locks" the handlers against writing to the pipe */ 1771 /* this "locks" the handlers against writing to the pipe */
1460 /* while we modify the fd vars */ 1772 /* while we modify the fd vars */
1461 gotsig = 1; 1773 sig_pending = 1;
1462#if EV_ASYNC_ENABLE 1774#if EV_ASYNC_ENABLE
1463 gotasync = 1; 1775 async_pending = 1;
1464#endif 1776#endif
1465 1777
1466 ev_ref (EV_A); 1778 ev_ref (EV_A);
1467 ev_io_stop (EV_A_ &pipeev); 1779 ev_io_stop (EV_A_ &pipe_w);
1468 1780
1469#if EV_USE_EVENTFD 1781#if EV_USE_EVENTFD
1470 if (evfd >= 0) 1782 if (evfd >= 0)
1471 close (evfd); 1783 close (evfd);
1472#endif 1784#endif
1473 1785
1474 if (evpipe [0] >= 0) 1786 if (evpipe [0] >= 0)
1475 { 1787 {
1476 close (evpipe [0]); 1788 EV_WIN32_CLOSE_FD (evpipe [0]);
1477 close (evpipe [1]); 1789 EV_WIN32_CLOSE_FD (evpipe [1]);
1478 } 1790 }
1479 1791
1480 evpipe_init (EV_A); 1792 evpipe_init (EV_A);
1481 /* now iterate over everything, in case we missed something */ 1793 /* now iterate over everything, in case we missed something */
1482 pipecb (EV_A_ &pipeev, EV_READ); 1794 pipecb (EV_A_ &pipe_w, EV_READ);
1483 } 1795 }
1484 1796
1485 postfork = 0; 1797 postfork = 0;
1486} 1798}
1487 1799
1488#if EV_MULTIPLICITY 1800#if EV_MULTIPLICITY
1801
1489struct ev_loop * 1802struct ev_loop *
1490ev_loop_new (unsigned int flags) 1803ev_loop_new (unsigned int flags)
1491{ 1804{
1492 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1805 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1493 1806
1494 memset (loop, 0, sizeof (struct ev_loop)); 1807 memset (EV_A, 0, sizeof (struct ev_loop));
1495
1496 loop_init (EV_A_ flags); 1808 loop_init (EV_A_ flags);
1497 1809
1498 if (ev_backend (EV_A)) 1810 if (ev_backend (EV_A))
1499 return loop; 1811 return EV_A;
1500 1812
1501 return 0; 1813 return 0;
1502} 1814}
1503 1815
1504void 1816void
… …
1511void 1823void
1512ev_loop_fork (EV_P) 1824ev_loop_fork (EV_P)
1513{ 1825{
1514 postfork = 1; /* must be in line with ev_default_fork */ 1826 postfork = 1; /* must be in line with ev_default_fork */
1515} 1827}
1828#endif /* multiplicity */
1516 1829
1517#if EV_VERIFY 1830#if EV_VERIFY
1518static void 1831static void noinline
1832verify_watcher (EV_P_ W w)
1833{
1834 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1835
1836 if (w->pending)
1837 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1838}
1839
1840static void noinline
1841verify_heap (EV_P_ ANHE *heap, int N)
1842{
1843 int i;
1844
1845 for (i = HEAP0; i < N + HEAP0; ++i)
1846 {
1847 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1848 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1849 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1850
1851 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1852 }
1853}
1854
1855static void noinline
1519array_check (W **ws, int cnt) 1856array_verify (EV_P_ W *ws, int cnt)
1520{ 1857{
1521 while (cnt--) 1858 while (cnt--)
1859 {
1522 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1860 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1861 verify_watcher (EV_A_ ws [cnt]);
1862 }
1523} 1863}
1864#endif
1524 1865
1525static void 1866#if EV_MINIMAL < 2
1867void
1526ev_loop_verify (EV_P) 1868ev_loop_verify (EV_P)
1527{ 1869{
1870#if EV_VERIFY
1528 int i; 1871 int i;
1872 WL w;
1529 1873
1874 assert (activecnt >= -1);
1875
1876 assert (fdchangemax >= fdchangecnt);
1877 for (i = 0; i < fdchangecnt; ++i)
1878 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1879
1880 assert (anfdmax >= 0);
1881 for (i = 0; i < anfdmax; ++i)
1882 for (w = anfds [i].head; w; w = w->next)
1883 {
1884 verify_watcher (EV_A_ (W)w);
1885 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1886 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1887 }
1888
1889 assert (timermax >= timercnt);
1530 checkheap (timers, timercnt); 1890 verify_heap (EV_A_ timers, timercnt);
1891
1531#if EV_PERIODIC_ENABLE 1892#if EV_PERIODIC_ENABLE
1893 assert (periodicmax >= periodiccnt);
1532 checkheap (periodics, periodiccnt); 1894 verify_heap (EV_A_ periodics, periodiccnt);
1533#endif 1895#endif
1534 1896
1897 for (i = NUMPRI; i--; )
1898 {
1899 assert (pendingmax [i] >= pendingcnt [i]);
1535#if EV_IDLE_ENABLE 1900#if EV_IDLE_ENABLE
1536 for (i = NUMPRI; i--; ) 1901 assert (idleall >= 0);
1902 assert (idlemax [i] >= idlecnt [i]);
1537 array_check ((W **)idles [i], idlecnt [i]); 1903 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1538#endif 1904#endif
1905 }
1906
1539#if EV_FORK_ENABLE 1907#if EV_FORK_ENABLE
1908 assert (forkmax >= forkcnt);
1540 array_check ((W **)forks, forkcnt); 1909 array_verify (EV_A_ (W *)forks, forkcnt);
1541#endif 1910#endif
1542 array_check ((W **)prepares, preparecnt); 1911
1543 array_check ((W **)checks, checkcnt);
1544#if EV_ASYNC_ENABLE 1912#if EV_ASYNC_ENABLE
1913 assert (asyncmax >= asynccnt);
1545 array_check ((W **)asyncs, asynccnt); 1914 array_verify (EV_A_ (W *)asyncs, asynccnt);
1915#endif
1916
1917 assert (preparemax >= preparecnt);
1918 array_verify (EV_A_ (W *)prepares, preparecnt);
1919
1920 assert (checkmax >= checkcnt);
1921 array_verify (EV_A_ (W *)checks, checkcnt);
1922
1923# if 0
1924 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1925 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1546#endif 1926# endif
1547}
1548#endif 1927#endif
1549 1928}
1550#endif 1929#endif
1551 1930
1552#if EV_MULTIPLICITY 1931#if EV_MULTIPLICITY
1553struct ev_loop * 1932struct ev_loop *
1554ev_default_loop_init (unsigned int flags) 1933ev_default_loop_init (unsigned int flags)
… …
1558#endif 1937#endif
1559{ 1938{
1560 if (!ev_default_loop_ptr) 1939 if (!ev_default_loop_ptr)
1561 { 1940 {
1562#if EV_MULTIPLICITY 1941#if EV_MULTIPLICITY
1563 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1942 EV_P = ev_default_loop_ptr = &default_loop_struct;
1564#else 1943#else
1565 ev_default_loop_ptr = 1; 1944 ev_default_loop_ptr = 1;
1566#endif 1945#endif
1567 1946
1568 loop_init (EV_A_ flags); 1947 loop_init (EV_A_ flags);
… …
1585 1964
1586void 1965void
1587ev_default_destroy (void) 1966ev_default_destroy (void)
1588{ 1967{
1589#if EV_MULTIPLICITY 1968#if EV_MULTIPLICITY
1590 struct ev_loop *loop = ev_default_loop_ptr; 1969 EV_P = ev_default_loop_ptr;
1591#endif 1970#endif
1971
1972 ev_default_loop_ptr = 0;
1592 1973
1593#ifndef _WIN32 1974#ifndef _WIN32
1594 ev_ref (EV_A); /* child watcher */ 1975 ev_ref (EV_A); /* child watcher */
1595 ev_signal_stop (EV_A_ &childev); 1976 ev_signal_stop (EV_A_ &childev);
1596#endif 1977#endif
… …
1600 1981
1601void 1982void
1602ev_default_fork (void) 1983ev_default_fork (void)
1603{ 1984{
1604#if EV_MULTIPLICITY 1985#if EV_MULTIPLICITY
1605 struct ev_loop *loop = ev_default_loop_ptr; 1986 EV_P = ev_default_loop_ptr;
1606#endif 1987#endif
1607 1988
1608 if (backend)
1609 postfork = 1; /* must be in line with ev_loop_fork */ 1989 postfork = 1; /* must be in line with ev_loop_fork */
1610} 1990}
1611 1991
1612/*****************************************************************************/ 1992/*****************************************************************************/
1613 1993
1614void 1994void
1615ev_invoke (EV_P_ void *w, int revents) 1995ev_invoke (EV_P_ void *w, int revents)
1616{ 1996{
1617 EV_CB_INVOKE ((W)w, revents); 1997 EV_CB_INVOKE ((W)w, revents);
1618} 1998}
1619 1999
1620void inline_speed 2000unsigned int
1621call_pending (EV_P) 2001ev_pending_count (EV_P)
1622{ 2002{
1623 int pri; 2003 int pri;
2004 unsigned int count = 0;
1624 2005
1625 EV_FREQUENT_CHECK; 2006 for (pri = NUMPRI; pri--; )
2007 count += pendingcnt [pri];
2008
2009 return count;
2010}
2011
2012void noinline
2013ev_invoke_pending (EV_P)
2014{
2015 int pri;
1626 2016
1627 for (pri = NUMPRI; pri--; ) 2017 for (pri = NUMPRI; pri--; )
1628 while (pendingcnt [pri]) 2018 while (pendingcnt [pri])
1629 { 2019 {
1630 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2020 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1631 2021
1632 if (expect_true (p->w))
1633 {
1634 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2022 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2023 /* ^ this is no longer true, as pending_w could be here */
1635 2024
1636 p->w->pending = 0; 2025 p->w->pending = 0;
1637 EV_CB_INVOKE (p->w, p->events); 2026 EV_CB_INVOKE (p->w, p->events);
1638 } 2027 EV_FREQUENT_CHECK;
1639 } 2028 }
1640
1641 EV_FREQUENT_CHECK;
1642} 2029}
1643 2030
1644#if EV_IDLE_ENABLE 2031#if EV_IDLE_ENABLE
1645void inline_size 2032/* make idle watchers pending. this handles the "call-idle */
2033/* only when higher priorities are idle" logic */
2034inline_size void
1646idle_reify (EV_P) 2035idle_reify (EV_P)
1647{ 2036{
1648 if (expect_false (idleall)) 2037 if (expect_false (idleall))
1649 { 2038 {
1650 int pri; 2039 int pri;
… …
1662 } 2051 }
1663 } 2052 }
1664} 2053}
1665#endif 2054#endif
1666 2055
1667void inline_size 2056/* make timers pending */
2057inline_size void
1668timers_reify (EV_P) 2058timers_reify (EV_P)
1669{ 2059{
1670 EV_FREQUENT_CHECK; 2060 EV_FREQUENT_CHECK;
1671 2061
1672 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2062 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1673 { 2063 {
1674 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2064 do
1675
1676 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1677
1678 /* first reschedule or stop timer */
1679 if (w->repeat)
1680 { 2065 {
2066 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2067
2068 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2069
2070 /* first reschedule or stop timer */
2071 if (w->repeat)
2072 {
1681 ev_at (w) += w->repeat; 2073 ev_at (w) += w->repeat;
1682 if (ev_at (w) < mn_now) 2074 if (ev_at (w) < mn_now)
1683 ev_at (w) = mn_now; 2075 ev_at (w) = mn_now;
1684 2076
1685 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2077 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1686 2078
1687 ANHE_at_cache (timers [HEAP0]); 2079 ANHE_at_cache (timers [HEAP0]);
1688 downheap (timers, timercnt, HEAP0); 2080 downheap (timers, timercnt, HEAP0);
2081 }
2082 else
2083 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2084
2085 EV_FREQUENT_CHECK;
2086 feed_reverse (EV_A_ (W)w);
1689 } 2087 }
1690 else 2088 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1691 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1692 2089
1693 EV_FREQUENT_CHECK;
1694 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 2090 feed_reverse_done (EV_A_ EV_TIMEOUT);
1695 } 2091 }
1696} 2092}
1697 2093
1698#if EV_PERIODIC_ENABLE 2094#if EV_PERIODIC_ENABLE
1699void inline_size 2095/* make periodics pending */
2096inline_size void
1700periodics_reify (EV_P) 2097periodics_reify (EV_P)
1701{ 2098{
1702 EV_FREQUENT_CHECK; 2099 EV_FREQUENT_CHECK;
2100
1703 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2101 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1704 { 2102 {
1705 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2103 int feed_count = 0;
1706 2104
1707 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2105 do
1708
1709 /* first reschedule or stop timer */
1710 if (w->reschedule_cb)
1711 { 2106 {
2107 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2108
2109 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2110
2111 /* first reschedule or stop timer */
2112 if (w->reschedule_cb)
2113 {
1712 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2114 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1713 2115
1714 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2116 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1715 2117
1716 ANHE_at_cache (periodics [HEAP0]); 2118 ANHE_at_cache (periodics [HEAP0]);
1717 downheap (periodics, periodiccnt, HEAP0); 2119 downheap (periodics, periodiccnt, HEAP0);
2120 }
2121 else if (w->interval)
2122 {
2123 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2124 /* if next trigger time is not sufficiently in the future, put it there */
2125 /* this might happen because of floating point inexactness */
2126 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2127 {
2128 ev_at (w) += w->interval;
2129
2130 /* if interval is unreasonably low we might still have a time in the past */
2131 /* so correct this. this will make the periodic very inexact, but the user */
2132 /* has effectively asked to get triggered more often than possible */
2133 if (ev_at (w) < ev_rt_now)
2134 ev_at (w) = ev_rt_now;
2135 }
2136
2137 ANHE_at_cache (periodics [HEAP0]);
2138 downheap (periodics, periodiccnt, HEAP0);
2139 }
2140 else
2141 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2142
1718 EV_FREQUENT_CHECK; 2143 EV_FREQUENT_CHECK;
2144 feed_reverse (EV_A_ (W)w);
1719 } 2145 }
1720 else if (w->interval) 2146 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1721 {
1722 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1723 /* if next trigger time is not sufficiently in the future, put it there */
1724 /* this might happen because of floating point inexactness */
1725 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1726 {
1727 ev_at (w) += w->interval;
1728 2147
1729 /* if interval is unreasonably low we might still have a time in the past */
1730 /* so correct this. this will make the periodic very inexact, but the user */
1731 /* has effectively asked to get triggered more often than possible */
1732 if (ev_at (w) < ev_rt_now)
1733 ev_at (w) = ev_rt_now;
1734 }
1735
1736 ANHE_at_cache (periodics [HEAP0]);
1737 downheap (periodics, periodiccnt, HEAP0);
1738 }
1739 else
1740 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1741
1742 EV_FREQUENT_CHECK;
1743 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2148 feed_reverse_done (EV_A_ EV_PERIODIC);
1744 } 2149 }
1745} 2150}
1746 2151
2152/* simply recalculate all periodics */
2153/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1747static void noinline 2154static void noinline
1748periodics_reschedule (EV_P) 2155periodics_reschedule (EV_P)
1749{ 2156{
1750 int i; 2157 int i;
1751 2158
… …
1764 2171
1765 reheap (periodics, periodiccnt); 2172 reheap (periodics, periodiccnt);
1766} 2173}
1767#endif 2174#endif
1768 2175
1769void inline_speed 2176/* adjust all timers by a given offset */
2177static void noinline
2178timers_reschedule (EV_P_ ev_tstamp adjust)
2179{
2180 int i;
2181
2182 for (i = 0; i < timercnt; ++i)
2183 {
2184 ANHE *he = timers + i + HEAP0;
2185 ANHE_w (*he)->at += adjust;
2186 ANHE_at_cache (*he);
2187 }
2188}
2189
2190/* fetch new monotonic and realtime times from the kernel */
2191/* also detect if there was a timejump, and act accordingly */
2192inline_speed void
1770time_update (EV_P_ ev_tstamp max_block) 2193time_update (EV_P_ ev_tstamp max_block)
1771{ 2194{
1772 int i;
1773
1774#if EV_USE_MONOTONIC 2195#if EV_USE_MONOTONIC
1775 if (expect_true (have_monotonic)) 2196 if (expect_true (have_monotonic))
1776 { 2197 {
2198 int i;
1777 ev_tstamp odiff = rtmn_diff; 2199 ev_tstamp odiff = rtmn_diff;
1778 2200
1779 mn_now = get_clock (); 2201 mn_now = get_clock ();
1780 2202
1781 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2203 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1807 ev_rt_now = ev_time (); 2229 ev_rt_now = ev_time ();
1808 mn_now = get_clock (); 2230 mn_now = get_clock ();
1809 now_floor = mn_now; 2231 now_floor = mn_now;
1810 } 2232 }
1811 2233
2234 /* no timer adjustment, as the monotonic clock doesn't jump */
2235 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1812# if EV_PERIODIC_ENABLE 2236# if EV_PERIODIC_ENABLE
1813 periodics_reschedule (EV_A); 2237 periodics_reschedule (EV_A);
1814# endif 2238# endif
1815 /* no timer adjustment, as the monotonic clock doesn't jump */
1816 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1817 } 2239 }
1818 else 2240 else
1819#endif 2241#endif
1820 { 2242 {
1821 ev_rt_now = ev_time (); 2243 ev_rt_now = ev_time ();
1822 2244
1823 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2245 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1824 { 2246 {
2247 /* adjust timers. this is easy, as the offset is the same for all of them */
2248 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1825#if EV_PERIODIC_ENABLE 2249#if EV_PERIODIC_ENABLE
1826 periodics_reschedule (EV_A); 2250 periodics_reschedule (EV_A);
1827#endif 2251#endif
1828 /* adjust timers. this is easy, as the offset is the same for all of them */
1829 for (i = 0; i < timercnt; ++i)
1830 {
1831 ANHE *he = timers + i + HEAP0;
1832 ANHE_w (*he)->at += ev_rt_now - mn_now;
1833 ANHE_at_cache (*he);
1834 }
1835 } 2252 }
1836 2253
1837 mn_now = ev_rt_now; 2254 mn_now = ev_rt_now;
1838 } 2255 }
1839} 2256}
1840 2257
1841void 2258void
1842ev_ref (EV_P)
1843{
1844 ++activecnt;
1845}
1846
1847void
1848ev_unref (EV_P)
1849{
1850 --activecnt;
1851}
1852
1853static int loop_done;
1854
1855void
1856ev_loop (EV_P_ int flags) 2259ev_loop (EV_P_ int flags)
1857{ 2260{
2261#if EV_MINIMAL < 2
2262 ++loop_depth;
2263#endif
2264
2265 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2266
1858 loop_done = EVUNLOOP_CANCEL; 2267 loop_done = EVUNLOOP_CANCEL;
1859 2268
1860 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2269 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1861 2270
1862 do 2271 do
1863 { 2272 {
2273#if EV_VERIFY >= 2
2274 ev_loop_verify (EV_A);
2275#endif
2276
1864#ifndef _WIN32 2277#ifndef _WIN32
1865 if (expect_false (curpid)) /* penalise the forking check even more */ 2278 if (expect_false (curpid)) /* penalise the forking check even more */
1866 if (expect_false (getpid () != curpid)) 2279 if (expect_false (getpid () != curpid))
1867 { 2280 {
1868 curpid = getpid (); 2281 curpid = getpid ();
… …
1874 /* we might have forked, so queue fork handlers */ 2287 /* we might have forked, so queue fork handlers */
1875 if (expect_false (postfork)) 2288 if (expect_false (postfork))
1876 if (forkcnt) 2289 if (forkcnt)
1877 { 2290 {
1878 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2291 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1879 call_pending (EV_A); 2292 EV_INVOKE_PENDING;
1880 } 2293 }
1881#endif 2294#endif
1882 2295
1883 /* queue prepare watchers (and execute them) */ 2296 /* queue prepare watchers (and execute them) */
1884 if (expect_false (preparecnt)) 2297 if (expect_false (preparecnt))
1885 { 2298 {
1886 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2299 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1887 call_pending (EV_A); 2300 EV_INVOKE_PENDING;
1888 } 2301 }
1889 2302
1890 if (expect_false (!activecnt)) 2303 if (expect_false (loop_done))
1891 break; 2304 break;
1892 2305
1893 /* we might have forked, so reify kernel state if necessary */ 2306 /* we might have forked, so reify kernel state if necessary */
1894 if (expect_false (postfork)) 2307 if (expect_false (postfork))
1895 loop_fork (EV_A); 2308 loop_fork (EV_A);
… …
1902 ev_tstamp waittime = 0.; 2315 ev_tstamp waittime = 0.;
1903 ev_tstamp sleeptime = 0.; 2316 ev_tstamp sleeptime = 0.;
1904 2317
1905 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2318 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1906 { 2319 {
2320 /* remember old timestamp for io_blocktime calculation */
2321 ev_tstamp prev_mn_now = mn_now;
2322
1907 /* update time to cancel out callback processing overhead */ 2323 /* update time to cancel out callback processing overhead */
1908 time_update (EV_A_ 1e100); 2324 time_update (EV_A_ 1e100);
1909 2325
1910 waittime = MAX_BLOCKTIME; 2326 waittime = MAX_BLOCKTIME;
1911 2327
… …
1921 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2337 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1922 if (waittime > to) waittime = to; 2338 if (waittime > to) waittime = to;
1923 } 2339 }
1924#endif 2340#endif
1925 2341
2342 /* don't let timeouts decrease the waittime below timeout_blocktime */
1926 if (expect_false (waittime < timeout_blocktime)) 2343 if (expect_false (waittime < timeout_blocktime))
1927 waittime = timeout_blocktime; 2344 waittime = timeout_blocktime;
1928 2345
1929 sleeptime = waittime - backend_fudge; 2346 /* extra check because io_blocktime is commonly 0 */
1930
1931 if (expect_true (sleeptime > io_blocktime)) 2347 if (expect_false (io_blocktime))
1932 sleeptime = io_blocktime;
1933
1934 if (sleeptime)
1935 { 2348 {
2349 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2350
2351 if (sleeptime > waittime - backend_fudge)
2352 sleeptime = waittime - backend_fudge;
2353
2354 if (expect_true (sleeptime > 0.))
2355 {
1936 ev_sleep (sleeptime); 2356 ev_sleep (sleeptime);
1937 waittime -= sleeptime; 2357 waittime -= sleeptime;
2358 }
1938 } 2359 }
1939 } 2360 }
1940 2361
2362#if EV_MINIMAL < 2
1941 ++loop_count; 2363 ++loop_count;
2364#endif
2365 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1942 backend_poll (EV_A_ waittime); 2366 backend_poll (EV_A_ waittime);
2367 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1943 2368
1944 /* update ev_rt_now, do magic */ 2369 /* update ev_rt_now, do magic */
1945 time_update (EV_A_ waittime + sleeptime); 2370 time_update (EV_A_ waittime + sleeptime);
1946 } 2371 }
1947 2372
… …
1958 2383
1959 /* queue check watchers, to be executed first */ 2384 /* queue check watchers, to be executed first */
1960 if (expect_false (checkcnt)) 2385 if (expect_false (checkcnt))
1961 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2386 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1962 2387
1963 call_pending (EV_A); 2388 EV_INVOKE_PENDING;
1964 } 2389 }
1965 while (expect_true ( 2390 while (expect_true (
1966 activecnt 2391 activecnt
1967 && !loop_done 2392 && !loop_done
1968 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2393 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1969 )); 2394 ));
1970 2395
1971 if (loop_done == EVUNLOOP_ONE) 2396 if (loop_done == EVUNLOOP_ONE)
1972 loop_done = EVUNLOOP_CANCEL; 2397 loop_done = EVUNLOOP_CANCEL;
2398
2399#if EV_MINIMAL < 2
2400 --loop_depth;
2401#endif
1973} 2402}
1974 2403
1975void 2404void
1976ev_unloop (EV_P_ int how) 2405ev_unloop (EV_P_ int how)
1977{ 2406{
1978 loop_done = how; 2407 loop_done = how;
1979} 2408}
1980 2409
2410void
2411ev_ref (EV_P)
2412{
2413 ++activecnt;
2414}
2415
2416void
2417ev_unref (EV_P)
2418{
2419 --activecnt;
2420}
2421
2422void
2423ev_now_update (EV_P)
2424{
2425 time_update (EV_A_ 1e100);
2426}
2427
2428void
2429ev_suspend (EV_P)
2430{
2431 ev_now_update (EV_A);
2432}
2433
2434void
2435ev_resume (EV_P)
2436{
2437 ev_tstamp mn_prev = mn_now;
2438
2439 ev_now_update (EV_A);
2440 timers_reschedule (EV_A_ mn_now - mn_prev);
2441#if EV_PERIODIC_ENABLE
2442 /* TODO: really do this? */
2443 periodics_reschedule (EV_A);
2444#endif
2445}
2446
1981/*****************************************************************************/ 2447/*****************************************************************************/
2448/* singly-linked list management, used when the expected list length is short */
1982 2449
1983void inline_size 2450inline_size void
1984wlist_add (WL *head, WL elem) 2451wlist_add (WL *head, WL elem)
1985{ 2452{
1986 elem->next = *head; 2453 elem->next = *head;
1987 *head = elem; 2454 *head = elem;
1988} 2455}
1989 2456
1990void inline_size 2457inline_size void
1991wlist_del (WL *head, WL elem) 2458wlist_del (WL *head, WL elem)
1992{ 2459{
1993 while (*head) 2460 while (*head)
1994 { 2461 {
1995 if (*head == elem) 2462 if (expect_true (*head == elem))
1996 { 2463 {
1997 *head = elem->next; 2464 *head = elem->next;
1998 return; 2465 break;
1999 } 2466 }
2000 2467
2001 head = &(*head)->next; 2468 head = &(*head)->next;
2002 } 2469 }
2003} 2470}
2004 2471
2005void inline_speed 2472/* internal, faster, version of ev_clear_pending */
2473inline_speed void
2006clear_pending (EV_P_ W w) 2474clear_pending (EV_P_ W w)
2007{ 2475{
2008 if (w->pending) 2476 if (w->pending)
2009 { 2477 {
2010 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2478 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2011 w->pending = 0; 2479 w->pending = 0;
2012 } 2480 }
2013} 2481}
2014 2482
2015int 2483int
… …
2019 int pending = w_->pending; 2487 int pending = w_->pending;
2020 2488
2021 if (expect_true (pending)) 2489 if (expect_true (pending))
2022 { 2490 {
2023 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2491 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2492 p->w = (W)&pending_w;
2024 w_->pending = 0; 2493 w_->pending = 0;
2025 p->w = 0;
2026 return p->events; 2494 return p->events;
2027 } 2495 }
2028 else 2496 else
2029 return 0; 2497 return 0;
2030} 2498}
2031 2499
2032void inline_size 2500inline_size void
2033pri_adjust (EV_P_ W w) 2501pri_adjust (EV_P_ W w)
2034{ 2502{
2035 int pri = w->priority; 2503 int pri = ev_priority (w);
2036 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2504 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2037 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2505 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2038 w->priority = pri; 2506 ev_set_priority (w, pri);
2039} 2507}
2040 2508
2041void inline_speed 2509inline_speed void
2042ev_start (EV_P_ W w, int active) 2510ev_start (EV_P_ W w, int active)
2043{ 2511{
2044 pri_adjust (EV_A_ w); 2512 pri_adjust (EV_A_ w);
2045 w->active = active; 2513 w->active = active;
2046 ev_ref (EV_A); 2514 ev_ref (EV_A);
2047} 2515}
2048 2516
2049void inline_size 2517inline_size void
2050ev_stop (EV_P_ W w) 2518ev_stop (EV_P_ W w)
2051{ 2519{
2052 ev_unref (EV_A); 2520 ev_unref (EV_A);
2053 w->active = 0; 2521 w->active = 0;
2054} 2522}
… …
2061 int fd = w->fd; 2529 int fd = w->fd;
2062 2530
2063 if (expect_false (ev_is_active (w))) 2531 if (expect_false (ev_is_active (w)))
2064 return; 2532 return;
2065 2533
2066 assert (("ev_io_start called with negative fd", fd >= 0)); 2534 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2535 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2067 2536
2068 EV_FREQUENT_CHECK; 2537 EV_FREQUENT_CHECK;
2069 2538
2070 ev_start (EV_A_ (W)w, 1); 2539 ev_start (EV_A_ (W)w, 1);
2071 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2540 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2072 wlist_add (&anfds[fd].head, (WL)w); 2541 wlist_add (&anfds[fd].head, (WL)w);
2073 2542
2074 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2543 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2075 w->events &= ~EV_IOFDSET; 2544 w->events &= ~EV__IOFDSET;
2076 2545
2077 EV_FREQUENT_CHECK; 2546 EV_FREQUENT_CHECK;
2078} 2547}
2079 2548
2080void noinline 2549void noinline
… …
2082{ 2551{
2083 clear_pending (EV_A_ (W)w); 2552 clear_pending (EV_A_ (W)w);
2084 if (expect_false (!ev_is_active (w))) 2553 if (expect_false (!ev_is_active (w)))
2085 return; 2554 return;
2086 2555
2087 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2556 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2088 2557
2089 EV_FREQUENT_CHECK; 2558 EV_FREQUENT_CHECK;
2090 2559
2091 wlist_del (&anfds[w->fd].head, (WL)w); 2560 wlist_del (&anfds[w->fd].head, (WL)w);
2092 ev_stop (EV_A_ (W)w); 2561 ev_stop (EV_A_ (W)w);
… …
2102 if (expect_false (ev_is_active (w))) 2571 if (expect_false (ev_is_active (w)))
2103 return; 2572 return;
2104 2573
2105 ev_at (w) += mn_now; 2574 ev_at (w) += mn_now;
2106 2575
2107 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2576 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2108 2577
2109 EV_FREQUENT_CHECK; 2578 EV_FREQUENT_CHECK;
2110 2579
2111 ++timercnt; 2580 ++timercnt;
2112 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2581 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2115 ANHE_at_cache (timers [ev_active (w)]); 2584 ANHE_at_cache (timers [ev_active (w)]);
2116 upheap (timers, ev_active (w)); 2585 upheap (timers, ev_active (w));
2117 2586
2118 EV_FREQUENT_CHECK; 2587 EV_FREQUENT_CHECK;
2119 2588
2120 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2589 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2121} 2590}
2122 2591
2123void noinline 2592void noinline
2124ev_timer_stop (EV_P_ ev_timer *w) 2593ev_timer_stop (EV_P_ ev_timer *w)
2125{ 2594{
… …
2130 EV_FREQUENT_CHECK; 2599 EV_FREQUENT_CHECK;
2131 2600
2132 { 2601 {
2133 int active = ev_active (w); 2602 int active = ev_active (w);
2134 2603
2135 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2604 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2136 2605
2137 --timercnt; 2606 --timercnt;
2138 2607
2139 if (expect_true (active < timercnt + HEAP0)) 2608 if (expect_true (active < timercnt + HEAP0))
2140 { 2609 {
2141 timers [active] = timers [timercnt + HEAP0]; 2610 timers [active] = timers [timercnt + HEAP0];
2142 adjustheap (timers, timercnt, active); 2611 adjustheap (timers, timercnt, active);
2143 } 2612 }
2144 } 2613 }
2145 2614
2146 EV_FREQUENT_CHECK;
2147
2148 ev_at (w) -= mn_now; 2615 ev_at (w) -= mn_now;
2149 2616
2150 ev_stop (EV_A_ (W)w); 2617 ev_stop (EV_A_ (W)w);
2618
2619 EV_FREQUENT_CHECK;
2151} 2620}
2152 2621
2153void noinline 2622void noinline
2154ev_timer_again (EV_P_ ev_timer *w) 2623ev_timer_again (EV_P_ ev_timer *w)
2155{ 2624{
… …
2173 } 2642 }
2174 2643
2175 EV_FREQUENT_CHECK; 2644 EV_FREQUENT_CHECK;
2176} 2645}
2177 2646
2647ev_tstamp
2648ev_timer_remaining (EV_P_ ev_timer *w)
2649{
2650 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2651}
2652
2178#if EV_PERIODIC_ENABLE 2653#if EV_PERIODIC_ENABLE
2179void noinline 2654void noinline
2180ev_periodic_start (EV_P_ ev_periodic *w) 2655ev_periodic_start (EV_P_ ev_periodic *w)
2181{ 2656{
2182 if (expect_false (ev_is_active (w))) 2657 if (expect_false (ev_is_active (w)))
… …
2184 2659
2185 if (w->reschedule_cb) 2660 if (w->reschedule_cb)
2186 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2661 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2187 else if (w->interval) 2662 else if (w->interval)
2188 { 2663 {
2189 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2664 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2190 /* this formula differs from the one in periodic_reify because we do not always round up */ 2665 /* this formula differs from the one in periodic_reify because we do not always round up */
2191 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2666 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2192 } 2667 }
2193 else 2668 else
2194 ev_at (w) = w->offset; 2669 ev_at (w) = w->offset;
… …
2202 ANHE_at_cache (periodics [ev_active (w)]); 2677 ANHE_at_cache (periodics [ev_active (w)]);
2203 upheap (periodics, ev_active (w)); 2678 upheap (periodics, ev_active (w));
2204 2679
2205 EV_FREQUENT_CHECK; 2680 EV_FREQUENT_CHECK;
2206 2681
2207 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2682 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2208} 2683}
2209 2684
2210void noinline 2685void noinline
2211ev_periodic_stop (EV_P_ ev_periodic *w) 2686ev_periodic_stop (EV_P_ ev_periodic *w)
2212{ 2687{
… …
2217 EV_FREQUENT_CHECK; 2692 EV_FREQUENT_CHECK;
2218 2693
2219 { 2694 {
2220 int active = ev_active (w); 2695 int active = ev_active (w);
2221 2696
2222 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2697 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2223 2698
2224 --periodiccnt; 2699 --periodiccnt;
2225 2700
2226 if (expect_true (active < periodiccnt + HEAP0)) 2701 if (expect_true (active < periodiccnt + HEAP0))
2227 { 2702 {
2228 periodics [active] = periodics [periodiccnt + HEAP0]; 2703 periodics [active] = periodics [periodiccnt + HEAP0];
2229 adjustheap (periodics, periodiccnt, active); 2704 adjustheap (periodics, periodiccnt, active);
2230 } 2705 }
2231 } 2706 }
2232 2707
2233 EV_FREQUENT_CHECK;
2234
2235 ev_stop (EV_A_ (W)w); 2708 ev_stop (EV_A_ (W)w);
2709
2710 EV_FREQUENT_CHECK;
2236} 2711}
2237 2712
2238void noinline 2713void noinline
2239ev_periodic_again (EV_P_ ev_periodic *w) 2714ev_periodic_again (EV_P_ ev_periodic *w)
2240{ 2715{
… …
2249#endif 2724#endif
2250 2725
2251void noinline 2726void noinline
2252ev_signal_start (EV_P_ ev_signal *w) 2727ev_signal_start (EV_P_ ev_signal *w)
2253{ 2728{
2254#if EV_MULTIPLICITY
2255 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2256#endif
2257 if (expect_false (ev_is_active (w))) 2729 if (expect_false (ev_is_active (w)))
2258 return; 2730 return;
2259 2731
2260 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2732 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2261 2733
2262 evpipe_init (EV_A); 2734#if EV_MULTIPLICITY
2735 assert (("libev: a signal must not be attached to two different loops",
2736 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2263 2737
2264 EV_FREQUENT_CHECK; 2738 signals [w->signum - 1].loop = EV_A;
2739#endif
2265 2740
2741 EV_FREQUENT_CHECK;
2742
2743#if EV_USE_SIGNALFD
2744 if (sigfd == -2)
2266 { 2745 {
2267#ifndef _WIN32 2746 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2268 sigset_t full, prev; 2747 if (sigfd < 0 && errno == EINVAL)
2269 sigfillset (&full); 2748 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2270 sigprocmask (SIG_SETMASK, &full, &prev);
2271#endif
2272 2749
2273 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2750 if (sigfd >= 0)
2751 {
2752 fd_intern (sigfd); /* doing it twice will not hurt */
2274 2753
2275#ifndef _WIN32 2754 sigemptyset (&sigfd_set);
2276 sigprocmask (SIG_SETMASK, &prev, 0); 2755
2277#endif 2756 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2757 ev_set_priority (&sigfd_w, EV_MAXPRI);
2758 ev_io_start (EV_A_ &sigfd_w);
2759 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2760 }
2278 } 2761 }
2762
2763 if (sigfd >= 0)
2764 {
2765 /* TODO: check .head */
2766 sigaddset (&sigfd_set, w->signum);
2767 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2768
2769 signalfd (sigfd, &sigfd_set, 0);
2770 }
2771#endif
2279 2772
2280 ev_start (EV_A_ (W)w, 1); 2773 ev_start (EV_A_ (W)w, 1);
2281 wlist_add (&signals [w->signum - 1].head, (WL)w); 2774 wlist_add (&signals [w->signum - 1].head, (WL)w);
2282 2775
2283 if (!((WL)w)->next) 2776 if (!((WL)w)->next)
2777# if EV_USE_SIGNALFD
2778 if (sigfd < 0) /*TODO*/
2779# endif
2284 { 2780 {
2285#if _WIN32 2781# ifdef _WIN32
2782 evpipe_init (EV_A);
2783
2286 signal (w->signum, ev_sighandler); 2784 signal (w->signum, ev_sighandler);
2287#else 2785# else
2288 struct sigaction sa; 2786 struct sigaction sa;
2787
2788 evpipe_init (EV_A);
2789
2289 sa.sa_handler = ev_sighandler; 2790 sa.sa_handler = ev_sighandler;
2290 sigfillset (&sa.sa_mask); 2791 sigfillset (&sa.sa_mask);
2291 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2792 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2292 sigaction (w->signum, &sa, 0); 2793 sigaction (w->signum, &sa, 0);
2794
2795 sigemptyset (&sa.sa_mask);
2796 sigaddset (&sa.sa_mask, w->signum);
2797 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2293#endif 2798#endif
2294 } 2799 }
2295 2800
2296 EV_FREQUENT_CHECK; 2801 EV_FREQUENT_CHECK;
2297} 2802}
2298 2803
2299void noinline 2804void noinline
… …
2307 2812
2308 wlist_del (&signals [w->signum - 1].head, (WL)w); 2813 wlist_del (&signals [w->signum - 1].head, (WL)w);
2309 ev_stop (EV_A_ (W)w); 2814 ev_stop (EV_A_ (W)w);
2310 2815
2311 if (!signals [w->signum - 1].head) 2816 if (!signals [w->signum - 1].head)
2817 {
2818#if EV_MULTIPLICITY
2819 signals [w->signum - 1].loop = 0; /* unattach from signal */
2820#endif
2821#if EV_USE_SIGNALFD
2822 if (sigfd >= 0)
2823 {
2824 sigset_t ss;
2825
2826 sigemptyset (&ss);
2827 sigaddset (&ss, w->signum);
2828 sigdelset (&sigfd_set, w->signum);
2829
2830 signalfd (sigfd, &sigfd_set, 0);
2831 sigprocmask (SIG_UNBLOCK, &ss, 0);
2832 }
2833 else
2834#endif
2312 signal (w->signum, SIG_DFL); 2835 signal (w->signum, SIG_DFL);
2836 }
2313 2837
2314 EV_FREQUENT_CHECK; 2838 EV_FREQUENT_CHECK;
2315} 2839}
2316 2840
2317void 2841void
2318ev_child_start (EV_P_ ev_child *w) 2842ev_child_start (EV_P_ ev_child *w)
2319{ 2843{
2320#if EV_MULTIPLICITY 2844#if EV_MULTIPLICITY
2321 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2845 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2322#endif 2846#endif
2323 if (expect_false (ev_is_active (w))) 2847 if (expect_false (ev_is_active (w)))
2324 return; 2848 return;
2325 2849
2326 EV_FREQUENT_CHECK; 2850 EV_FREQUENT_CHECK;
… …
2351# ifdef _WIN32 2875# ifdef _WIN32
2352# undef lstat 2876# undef lstat
2353# define lstat(a,b) _stati64 (a,b) 2877# define lstat(a,b) _stati64 (a,b)
2354# endif 2878# endif
2355 2879
2356#define DEF_STAT_INTERVAL 5.0074891 2880#define DEF_STAT_INTERVAL 5.0074891
2881#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2357#define MIN_STAT_INTERVAL 0.1074891 2882#define MIN_STAT_INTERVAL 0.1074891
2358 2883
2359static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2884static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2360 2885
2361#if EV_USE_INOTIFY 2886#if EV_USE_INOTIFY
2362# define EV_INOTIFY_BUFSIZE 8192 2887
2888/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2889# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2363 2890
2364static void noinline 2891static void noinline
2365infy_add (EV_P_ ev_stat *w) 2892infy_add (EV_P_ ev_stat *w)
2366{ 2893{
2367 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); 2894 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);
2368 2895
2369 if (w->wd < 0) 2896 if (w->wd >= 0)
2897 {
2898 struct statfs sfs;
2899
2900 /* now local changes will be tracked by inotify, but remote changes won't */
2901 /* unless the filesystem is known to be local, we therefore still poll */
2902 /* also do poll on <2.6.25, but with normal frequency */
2903
2904 if (!fs_2625)
2905 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2906 else if (!statfs (w->path, &sfs)
2907 && (sfs.f_type == 0x1373 /* devfs */
2908 || sfs.f_type == 0xEF53 /* ext2/3 */
2909 || sfs.f_type == 0x3153464a /* jfs */
2910 || sfs.f_type == 0x52654973 /* reiser3 */
2911 || sfs.f_type == 0x01021994 /* tempfs */
2912 || sfs.f_type == 0x58465342 /* xfs */))
2913 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2914 else
2915 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2370 { 2916 }
2371 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2917 else
2918 {
2919 /* can't use inotify, continue to stat */
2920 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2372 2921
2373 /* monitor some parent directory for speedup hints */ 2922 /* if path is not there, monitor some parent directory for speedup hints */
2374 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2923 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2375 /* but an efficiency issue only */ 2924 /* but an efficiency issue only */
2376 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2925 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2377 { 2926 {
2378 char path [4096]; 2927 char path [4096];
2379 strcpy (path, w->path); 2928 strcpy (path, w->path);
… …
2383 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2932 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2384 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2933 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2385 2934
2386 char *pend = strrchr (path, '/'); 2935 char *pend = strrchr (path, '/');
2387 2936
2388 if (!pend) 2937 if (!pend || pend == path)
2389 break; /* whoops, no '/', complain to your admin */ 2938 break;
2390 2939
2391 *pend = 0; 2940 *pend = 0;
2392 w->wd = inotify_add_watch (fs_fd, path, mask); 2941 w->wd = inotify_add_watch (fs_fd, path, mask);
2393 } 2942 }
2394 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2943 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2395 } 2944 }
2396 } 2945 }
2397 else
2398 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2399 2946
2400 if (w->wd >= 0) 2947 if (w->wd >= 0)
2401 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2948 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2949
2950 /* now re-arm timer, if required */
2951 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2952 ev_timer_again (EV_A_ &w->timer);
2953 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2402} 2954}
2403 2955
2404static void noinline 2956static void noinline
2405infy_del (EV_P_ ev_stat *w) 2957infy_del (EV_P_ ev_stat *w)
2406{ 2958{
… …
2420 2972
2421static void noinline 2973static void noinline
2422infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2974infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2423{ 2975{
2424 if (slot < 0) 2976 if (slot < 0)
2425 /* overflow, need to check for all hahs slots */ 2977 /* overflow, need to check for all hash slots */
2426 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2978 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2427 infy_wd (EV_A_ slot, wd, ev); 2979 infy_wd (EV_A_ slot, wd, ev);
2428 else 2980 else
2429 { 2981 {
2430 WL w_; 2982 WL w_;
… …
2436 2988
2437 if (w->wd == wd || wd == -1) 2989 if (w->wd == wd || wd == -1)
2438 { 2990 {
2439 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2991 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2440 { 2992 {
2993 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2441 w->wd = -1; 2994 w->wd = -1;
2442 infy_add (EV_A_ w); /* re-add, no matter what */ 2995 infy_add (EV_A_ w); /* re-add, no matter what */
2443 } 2996 }
2444 2997
2445 stat_timer_cb (EV_A_ &w->timer, 0); 2998 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2450 3003
2451static void 3004static void
2452infy_cb (EV_P_ ev_io *w, int revents) 3005infy_cb (EV_P_ ev_io *w, int revents)
2453{ 3006{
2454 char buf [EV_INOTIFY_BUFSIZE]; 3007 char buf [EV_INOTIFY_BUFSIZE];
2455 struct inotify_event *ev = (struct inotify_event *)buf;
2456 int ofs; 3008 int ofs;
2457 int len = read (fs_fd, buf, sizeof (buf)); 3009 int len = read (fs_fd, buf, sizeof (buf));
2458 3010
2459 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3011 for (ofs = 0; ofs < len; )
3012 {
3013 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2460 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3014 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3015 ofs += sizeof (struct inotify_event) + ev->len;
3016 }
2461} 3017}
2462 3018
2463void inline_size 3019inline_size unsigned int
3020ev_linux_version (void)
3021{
3022 struct utsname buf;
3023 unsigned int v;
3024 int i;
3025 char *p = buf.release;
3026
3027 if (uname (&buf))
3028 return 0;
3029
3030 for (i = 3+1; --i; )
3031 {
3032 unsigned int c = 0;
3033
3034 for (;;)
3035 {
3036 if (*p >= '0' && *p <= '9')
3037 c = c * 10 + *p++ - '0';
3038 else
3039 {
3040 p += *p == '.';
3041 break;
3042 }
3043 }
3044
3045 v = (v << 8) | c;
3046 }
3047
3048 return v;
3049}
3050
3051inline_size void
3052ev_check_2625 (EV_P)
3053{
3054 /* kernels < 2.6.25 are borked
3055 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3056 */
3057 if (ev_linux_version () < 0x020619)
3058 return;
3059
3060 fs_2625 = 1;
3061}
3062
3063inline_size int
3064infy_newfd (void)
3065{
3066#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3067 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3068 if (fd >= 0)
3069 return fd;
3070#endif
3071 return inotify_init ();
3072}
3073
3074inline_size void
2464infy_init (EV_P) 3075infy_init (EV_P)
2465{ 3076{
2466 if (fs_fd != -2) 3077 if (fs_fd != -2)
2467 return; 3078 return;
2468 3079
3080 fs_fd = -1;
3081
3082 ev_check_2625 (EV_A);
3083
2469 fs_fd = inotify_init (); 3084 fs_fd = infy_newfd ();
2470 3085
2471 if (fs_fd >= 0) 3086 if (fs_fd >= 0)
2472 { 3087 {
3088 fd_intern (fs_fd);
2473 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3089 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2474 ev_set_priority (&fs_w, EV_MAXPRI); 3090 ev_set_priority (&fs_w, EV_MAXPRI);
2475 ev_io_start (EV_A_ &fs_w); 3091 ev_io_start (EV_A_ &fs_w);
3092 ev_unref (EV_A);
2476 } 3093 }
2477} 3094}
2478 3095
2479void inline_size 3096inline_size void
2480infy_fork (EV_P) 3097infy_fork (EV_P)
2481{ 3098{
2482 int slot; 3099 int slot;
2483 3100
2484 if (fs_fd < 0) 3101 if (fs_fd < 0)
2485 return; 3102 return;
2486 3103
3104 ev_ref (EV_A);
3105 ev_io_stop (EV_A_ &fs_w);
2487 close (fs_fd); 3106 close (fs_fd);
2488 fs_fd = inotify_init (); 3107 fs_fd = infy_newfd ();
3108
3109 if (fs_fd >= 0)
3110 {
3111 fd_intern (fs_fd);
3112 ev_io_set (&fs_w, fs_fd, EV_READ);
3113 ev_io_start (EV_A_ &fs_w);
3114 ev_unref (EV_A);
3115 }
2489 3116
2490 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3117 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2491 { 3118 {
2492 WL w_ = fs_hash [slot].head; 3119 WL w_ = fs_hash [slot].head;
2493 fs_hash [slot].head = 0; 3120 fs_hash [slot].head = 0;
… …
2500 w->wd = -1; 3127 w->wd = -1;
2501 3128
2502 if (fs_fd >= 0) 3129 if (fs_fd >= 0)
2503 infy_add (EV_A_ w); /* re-add, no matter what */ 3130 infy_add (EV_A_ w); /* re-add, no matter what */
2504 else 3131 else
3132 {
3133 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3134 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2505 ev_timer_start (EV_A_ &w->timer); 3135 ev_timer_again (EV_A_ &w->timer);
3136 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3137 }
2506 } 3138 }
2507
2508 } 3139 }
2509} 3140}
2510 3141
3142#endif
3143
3144#ifdef _WIN32
3145# define EV_LSTAT(p,b) _stati64 (p, b)
3146#else
3147# define EV_LSTAT(p,b) lstat (p, b)
2511#endif 3148#endif
2512 3149
2513void 3150void
2514ev_stat_stat (EV_P_ ev_stat *w) 3151ev_stat_stat (EV_P_ ev_stat *w)
2515{ 3152{
… …
2522static void noinline 3159static void noinline
2523stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3160stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2524{ 3161{
2525 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3162 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2526 3163
2527 /* we copy this here each the time so that */ 3164 ev_statdata prev = w->attr;
2528 /* prev has the old value when the callback gets invoked */
2529 w->prev = w->attr;
2530 ev_stat_stat (EV_A_ w); 3165 ev_stat_stat (EV_A_ w);
2531 3166
2532 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3167 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2533 if ( 3168 if (
2534 w->prev.st_dev != w->attr.st_dev 3169 prev.st_dev != w->attr.st_dev
2535 || w->prev.st_ino != w->attr.st_ino 3170 || prev.st_ino != w->attr.st_ino
2536 || w->prev.st_mode != w->attr.st_mode 3171 || prev.st_mode != w->attr.st_mode
2537 || w->prev.st_nlink != w->attr.st_nlink 3172 || prev.st_nlink != w->attr.st_nlink
2538 || w->prev.st_uid != w->attr.st_uid 3173 || prev.st_uid != w->attr.st_uid
2539 || w->prev.st_gid != w->attr.st_gid 3174 || prev.st_gid != w->attr.st_gid
2540 || w->prev.st_rdev != w->attr.st_rdev 3175 || prev.st_rdev != w->attr.st_rdev
2541 || w->prev.st_size != w->attr.st_size 3176 || prev.st_size != w->attr.st_size
2542 || w->prev.st_atime != w->attr.st_atime 3177 || prev.st_atime != w->attr.st_atime
2543 || w->prev.st_mtime != w->attr.st_mtime 3178 || prev.st_mtime != w->attr.st_mtime
2544 || w->prev.st_ctime != w->attr.st_ctime 3179 || prev.st_ctime != w->attr.st_ctime
2545 ) { 3180 ) {
3181 /* we only update w->prev on actual differences */
3182 /* in case we test more often than invoke the callback, */
3183 /* to ensure that prev is always different to attr */
3184 w->prev = prev;
3185
2546 #if EV_USE_INOTIFY 3186 #if EV_USE_INOTIFY
3187 if (fs_fd >= 0)
3188 {
2547 infy_del (EV_A_ w); 3189 infy_del (EV_A_ w);
2548 infy_add (EV_A_ w); 3190 infy_add (EV_A_ w);
2549 ev_stat_stat (EV_A_ w); /* avoid race... */ 3191 ev_stat_stat (EV_A_ w); /* avoid race... */
3192 }
2550 #endif 3193 #endif
2551 3194
2552 ev_feed_event (EV_A_ w, EV_STAT); 3195 ev_feed_event (EV_A_ w, EV_STAT);
2553 } 3196 }
2554} 3197}
… …
2557ev_stat_start (EV_P_ ev_stat *w) 3200ev_stat_start (EV_P_ ev_stat *w)
2558{ 3201{
2559 if (expect_false (ev_is_active (w))) 3202 if (expect_false (ev_is_active (w)))
2560 return; 3203 return;
2561 3204
2562 /* since we use memcmp, we need to clear any padding data etc. */
2563 memset (&w->prev, 0, sizeof (ev_statdata));
2564 memset (&w->attr, 0, sizeof (ev_statdata));
2565
2566 ev_stat_stat (EV_A_ w); 3205 ev_stat_stat (EV_A_ w);
2567 3206
3207 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2568 if (w->interval < MIN_STAT_INTERVAL) 3208 w->interval = MIN_STAT_INTERVAL;
2569 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2570 3209
2571 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3210 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2572 ev_set_priority (&w->timer, ev_priority (w)); 3211 ev_set_priority (&w->timer, ev_priority (w));
2573 3212
2574#if EV_USE_INOTIFY 3213#if EV_USE_INOTIFY
2575 infy_init (EV_A); 3214 infy_init (EV_A);
2576 3215
2577 if (fs_fd >= 0) 3216 if (fs_fd >= 0)
2578 infy_add (EV_A_ w); 3217 infy_add (EV_A_ w);
2579 else 3218 else
2580#endif 3219#endif
3220 {
2581 ev_timer_start (EV_A_ &w->timer); 3221 ev_timer_again (EV_A_ &w->timer);
3222 ev_unref (EV_A);
3223 }
2582 3224
2583 ev_start (EV_A_ (W)w, 1); 3225 ev_start (EV_A_ (W)w, 1);
2584 3226
2585 EV_FREQUENT_CHECK; 3227 EV_FREQUENT_CHECK;
2586} 3228}
… …
2595 EV_FREQUENT_CHECK; 3237 EV_FREQUENT_CHECK;
2596 3238
2597#if EV_USE_INOTIFY 3239#if EV_USE_INOTIFY
2598 infy_del (EV_A_ w); 3240 infy_del (EV_A_ w);
2599#endif 3241#endif
3242
3243 if (ev_is_active (&w->timer))
3244 {
3245 ev_ref (EV_A);
2600 ev_timer_stop (EV_A_ &w->timer); 3246 ev_timer_stop (EV_A_ &w->timer);
3247 }
2601 3248
2602 ev_stop (EV_A_ (W)w); 3249 ev_stop (EV_A_ (W)w);
2603 3250
2604 EV_FREQUENT_CHECK; 3251 EV_FREQUENT_CHECK;
2605} 3252}
… …
2746embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3393embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2747{ 3394{
2748 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3395 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2749 3396
2750 { 3397 {
2751 struct ev_loop *loop = w->other; 3398 EV_P = w->other;
2752 3399
2753 while (fdchangecnt) 3400 while (fdchangecnt)
2754 { 3401 {
2755 fd_reify (EV_A); 3402 fd_reify (EV_A);
2756 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3403 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2757 } 3404 }
2758 } 3405 }
2759} 3406}
2760 3407
3408static void
3409embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3410{
3411 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3412
3413 ev_embed_stop (EV_A_ w);
3414
3415 {
3416 EV_P = w->other;
3417
3418 ev_loop_fork (EV_A);
3419 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3420 }
3421
3422 ev_embed_start (EV_A_ w);
3423}
3424
2761#if 0 3425#if 0
2762static void 3426static void
2763embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3427embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2764{ 3428{
2765 ev_idle_stop (EV_A_ idle); 3429 ev_idle_stop (EV_A_ idle);
… …
2771{ 3435{
2772 if (expect_false (ev_is_active (w))) 3436 if (expect_false (ev_is_active (w)))
2773 return; 3437 return;
2774 3438
2775 { 3439 {
2776 struct ev_loop *loop = w->other; 3440 EV_P = w->other;
2777 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3441 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2778 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3442 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2779 } 3443 }
2780 3444
2781 EV_FREQUENT_CHECK; 3445 EV_FREQUENT_CHECK;
2782 3446
… …
2785 3449
2786 ev_prepare_init (&w->prepare, embed_prepare_cb); 3450 ev_prepare_init (&w->prepare, embed_prepare_cb);
2787 ev_set_priority (&w->prepare, EV_MINPRI); 3451 ev_set_priority (&w->prepare, EV_MINPRI);
2788 ev_prepare_start (EV_A_ &w->prepare); 3452 ev_prepare_start (EV_A_ &w->prepare);
2789 3453
3454 ev_fork_init (&w->fork, embed_fork_cb);
3455 ev_fork_start (EV_A_ &w->fork);
3456
2790 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3457 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2791 3458
2792 ev_start (EV_A_ (W)w, 1); 3459 ev_start (EV_A_ (W)w, 1);
2793 3460
2794 EV_FREQUENT_CHECK; 3461 EV_FREQUENT_CHECK;
… …
2801 if (expect_false (!ev_is_active (w))) 3468 if (expect_false (!ev_is_active (w)))
2802 return; 3469 return;
2803 3470
2804 EV_FREQUENT_CHECK; 3471 EV_FREQUENT_CHECK;
2805 3472
2806 ev_io_stop (EV_A_ &w->io); 3473 ev_io_stop (EV_A_ &w->io);
2807 ev_prepare_stop (EV_A_ &w->prepare); 3474 ev_prepare_stop (EV_A_ &w->prepare);
3475 ev_fork_stop (EV_A_ &w->fork);
2808 3476
2809 ev_stop (EV_A_ (W)w); 3477 ev_stop (EV_A_ (W)w);
2810 3478
2811 EV_FREQUENT_CHECK; 3479 EV_FREQUENT_CHECK;
2812} 3480}
… …
2891 3559
2892void 3560void
2893ev_async_send (EV_P_ ev_async *w) 3561ev_async_send (EV_P_ ev_async *w)
2894{ 3562{
2895 w->sent = 1; 3563 w->sent = 1;
2896 evpipe_write (EV_A_ &gotasync); 3564 evpipe_write (EV_A_ &async_pending);
2897} 3565}
2898#endif 3566#endif
2899 3567
2900/*****************************************************************************/ 3568/*****************************************************************************/
2901 3569
… …
2911once_cb (EV_P_ struct ev_once *once, int revents) 3579once_cb (EV_P_ struct ev_once *once, int revents)
2912{ 3580{
2913 void (*cb)(int revents, void *arg) = once->cb; 3581 void (*cb)(int revents, void *arg) = once->cb;
2914 void *arg = once->arg; 3582 void *arg = once->arg;
2915 3583
2916 ev_io_stop (EV_A_ &once->io); 3584 ev_io_stop (EV_A_ &once->io);
2917 ev_timer_stop (EV_A_ &once->to); 3585 ev_timer_stop (EV_A_ &once->to);
2918 ev_free (once); 3586 ev_free (once);
2919 3587
2920 cb (revents, arg); 3588 cb (revents, arg);
2921} 3589}
2922 3590
2923static void 3591static void
2924once_cb_io (EV_P_ ev_io *w, int revents) 3592once_cb_io (EV_P_ ev_io *w, int revents)
2925{ 3593{
2926 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3594 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3595
3596 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2927} 3597}
2928 3598
2929static void 3599static void
2930once_cb_to (EV_P_ ev_timer *w, int revents) 3600once_cb_to (EV_P_ ev_timer *w, int revents)
2931{ 3601{
2932 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3602 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3603
3604 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2933} 3605}
2934 3606
2935void 3607void
2936ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3608ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2937{ 3609{
… …
2959 ev_timer_set (&once->to, timeout, 0.); 3631 ev_timer_set (&once->to, timeout, 0.);
2960 ev_timer_start (EV_A_ &once->to); 3632 ev_timer_start (EV_A_ &once->to);
2961 } 3633 }
2962} 3634}
2963 3635
3636/*****************************************************************************/
3637
3638#if EV_WALK_ENABLE
3639void
3640ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3641{
3642 int i, j;
3643 ev_watcher_list *wl, *wn;
3644
3645 if (types & (EV_IO | EV_EMBED))
3646 for (i = 0; i < anfdmax; ++i)
3647 for (wl = anfds [i].head; wl; )
3648 {
3649 wn = wl->next;
3650
3651#if EV_EMBED_ENABLE
3652 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3653 {
3654 if (types & EV_EMBED)
3655 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3656 }
3657 else
3658#endif
3659#if EV_USE_INOTIFY
3660 if (ev_cb ((ev_io *)wl) == infy_cb)
3661 ;
3662 else
3663#endif
3664 if ((ev_io *)wl != &pipe_w)
3665 if (types & EV_IO)
3666 cb (EV_A_ EV_IO, wl);
3667
3668 wl = wn;
3669 }
3670
3671 if (types & (EV_TIMER | EV_STAT))
3672 for (i = timercnt + HEAP0; i-- > HEAP0; )
3673#if EV_STAT_ENABLE
3674 /*TODO: timer is not always active*/
3675 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3676 {
3677 if (types & EV_STAT)
3678 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3679 }
3680 else
3681#endif
3682 if (types & EV_TIMER)
3683 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3684
3685#if EV_PERIODIC_ENABLE
3686 if (types & EV_PERIODIC)
3687 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3688 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3689#endif
3690
3691#if EV_IDLE_ENABLE
3692 if (types & EV_IDLE)
3693 for (j = NUMPRI; i--; )
3694 for (i = idlecnt [j]; i--; )
3695 cb (EV_A_ EV_IDLE, idles [j][i]);
3696#endif
3697
3698#if EV_FORK_ENABLE
3699 if (types & EV_FORK)
3700 for (i = forkcnt; i--; )
3701 if (ev_cb (forks [i]) != embed_fork_cb)
3702 cb (EV_A_ EV_FORK, forks [i]);
3703#endif
3704
3705#if EV_ASYNC_ENABLE
3706 if (types & EV_ASYNC)
3707 for (i = asynccnt; i--; )
3708 cb (EV_A_ EV_ASYNC, asyncs [i]);
3709#endif
3710
3711 if (types & EV_PREPARE)
3712 for (i = preparecnt; i--; )
3713#if EV_EMBED_ENABLE
3714 if (ev_cb (prepares [i]) != embed_prepare_cb)
3715#endif
3716 cb (EV_A_ EV_PREPARE, prepares [i]);
3717
3718 if (types & EV_CHECK)
3719 for (i = checkcnt; i--; )
3720 cb (EV_A_ EV_CHECK, checks [i]);
3721
3722 if (types & EV_SIGNAL)
3723 for (i = 0; i < EV_NSIG - 1; ++i)
3724 for (wl = signals [i].head; wl; )
3725 {
3726 wn = wl->next;
3727 cb (EV_A_ EV_SIGNAL, wl);
3728 wl = wn;
3729 }
3730
3731 if (types & EV_CHILD)
3732 for (i = EV_PID_HASHSIZE; i--; )
3733 for (wl = childs [i]; wl; )
3734 {
3735 wn = wl->next;
3736 cb (EV_A_ EV_CHILD, wl);
3737 wl = wn;
3738 }
3739/* EV_STAT 0x00001000 /* stat data changed */
3740/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3741}
3742#endif
3743
2964#if EV_MULTIPLICITY 3744#if EV_MULTIPLICITY
2965 #include "ev_wrap.h" 3745 #include "ev_wrap.h"
2966#endif 3746#endif
2967 3747
2968#ifdef __cplusplus 3748#ifdef __cplusplus

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