ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libev/ev.c
(Generate patch)

Comparing libev/ev.c (file contents):
Revision 1.227 by root, Fri May 2 07:20:01 2008 UTC vs.
Revision 1.331 by root, Tue Mar 9 08:55:03 2010 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
47# include EV_CONFIG_H 47# include EV_CONFIG_H
48# else 48# else
49# include "config.h" 49# include "config.h"
50# endif 50# endif
51 51
52# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME
56# define EV_USE_REALTIME 0
57# endif
58# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1
60# endif
61# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL)
63# define EV_USE_CLOCK_SYSCALL 0
64# endif
65
52# if HAVE_CLOCK_GETTIME 66# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 67# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 68# define EV_USE_MONOTONIC 1
55# endif 69# endif
56# ifndef EV_USE_REALTIME 70# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 71# define EV_USE_REALTIME 0
58# endif 72# endif
59# else 73# else
60# ifndef EV_USE_MONOTONIC 74# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 75# define EV_USE_MONOTONIC 0
62# endif 76# endif
… …
96# define EV_USE_EPOLL 0 110# define EV_USE_EPOLL 0
97# endif 111# endif
98# endif 112# endif
99 113
100# ifndef EV_USE_KQUEUE 114# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
102# define EV_USE_KQUEUE 1 116# define EV_USE_KQUEUE 1
103# else 117# else
104# define EV_USE_KQUEUE 0 118# define EV_USE_KQUEUE 0
105# endif 119# endif
106# endif 120# endif
… …
119# else 133# else
120# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY 0
121# endif 135# endif
122# endif 136# endif
123 137
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1
141# else
142# define EV_USE_SIGNALFD 0
143# endif
144# endif
145
124# ifndef EV_USE_EVENTFD 146# ifndef EV_USE_EVENTFD
125# if HAVE_EVENTFD 147# if HAVE_EVENTFD
126# define EV_USE_EVENTFD 1 148# define EV_USE_EVENTFD 1
127# else 149# else
128# define EV_USE_EVENTFD 0 150# define EV_USE_EVENTFD 0
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
317#if 0 /* debugging */
318# define EV_VERIFY 3
319# define EV_USE_4HEAP 1
320# define EV_HEAP_CACHE_AT 1
321#endif
322
323#ifndef EV_VERIFY
324# define EV_VERIFY !EV_MINIMAL
325#endif
326
327#ifndef EV_USE_4HEAP
328# define EV_USE_4HEAP !EV_MINIMAL
329#endif
330
331#ifndef EV_HEAP_CACHE_AT
332# define EV_HEAP_CACHE_AT !EV_MINIMAL
333#endif
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
240/* 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
241 356
242#ifndef CLOCK_MONOTONIC 357#ifndef CLOCK_MONOTONIC
243# undef EV_USE_MONOTONIC 358# undef EV_USE_MONOTONIC
244# define EV_USE_MONOTONIC 0 359# define EV_USE_MONOTONIC 0
245#endif 360#endif
… …
259# include <sys/select.h> 374# include <sys/select.h>
260# endif 375# endif
261#endif 376#endif
262 377
263#if EV_USE_INOTIFY 378#if EV_USE_INOTIFY
379# include <sys/utsname.h>
380# include <sys/statfs.h>
264# 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
265#endif 387#endif
266 388
267#if EV_SELECT_IS_WINSOCKET 389#if EV_SELECT_IS_WINSOCKET
268# include <winsock.h> 390# include <winsock.h>
269#endif 391#endif
270 392
271#if EV_USE_EVENTFD 393#if EV_USE_EVENTFD
272/* 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 */
273# 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
274# ifdef __cplusplus 406# ifdef __cplusplus
275extern "C" { 407extern "C" {
276# endif 408# endif
277int eventfd (unsigned int initval, int flags); 409int (eventfd) (unsigned int initval, int flags);
278# ifdef __cplusplus 410# ifdef __cplusplus
279} 411}
280# endif 412# endif
281#endif 413#endif
282 414
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
283/**/ 444/**/
445
446#if EV_VERIFY >= 3
447# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
448#else
449# define EV_FREQUENT_CHECK do { } while (0)
450#endif
284 451
285/* 452/*
286 * This is used to avoid floating point rounding problems. 453 * This is used to avoid floating point rounding problems.
287 * It is added to ev_rt_now when scheduling periodics 454 * It is added to ev_rt_now when scheduling periodics
288 * to ensure progress, time-wise, even when rounding 455 * to ensure progress, time-wise, even when rounding
… …
292 */ 459 */
293#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 460#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
294 461
295#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) */
296#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) */
297/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
298 464
299#if __GNUC__ >= 4 465#if __GNUC__ >= 4
300# define expect(expr,value) __builtin_expect ((expr),(value)) 466# define expect(expr,value) __builtin_expect ((expr),(value))
301# define noinline __attribute__ ((noinline)) 467# define noinline __attribute__ ((noinline))
302#else 468#else
… …
315# define inline_speed static noinline 481# define inline_speed static noinline
316#else 482#else
317# define inline_speed static inline 483# define inline_speed static inline
318#endif 484#endif
319 485
320#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
321#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 491# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
492#endif
322 493
323#define EMPTY /* required for microsofts broken pseudo-c compiler */ 494#define EMPTY /* required for microsofts broken pseudo-c compiler */
324#define EMPTY2(a,b) /* used to suppress some warnings */ 495#define EMPTY2(a,b) /* used to suppress some warnings */
325 496
326typedef ev_watcher *W; 497typedef ev_watcher *W;
327typedef ev_watcher_list *WL; 498typedef ev_watcher_list *WL;
328typedef ev_watcher_time *WT; 499typedef ev_watcher_time *WT;
329 500
330#if EV_USE_MONOTONIC 501#define ev_active(w) ((W)(w))->active
502#define ev_at(w) ((WT)(w))->at
503
504#if EV_USE_REALTIME
331/* 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 */
332/* 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
333static 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)
334#endif 522#endif
335 523
336#ifdef _WIN32 524#ifdef _WIN32
337# include "ev_win32.c" 525# include "ev_win32.c"
338#endif 526#endif
339 527
340/*****************************************************************************/ 528/*****************************************************************************/
341 529
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
342static void (*syserr_cb)(const char *msg); 538static void (*syserr_cb)(const char *msg);
343 539
344void 540void
345ev_set_syserr_cb (void (*cb)(const char *msg)) 541ev_set_syserr_cb (void (*cb)(const char *msg))
346{ 542{
347 syserr_cb = cb; 543 syserr_cb = cb;
348} 544}
349 545
350static void noinline 546static void noinline
351syserr (const char *msg) 547ev_syserr (const char *msg)
352{ 548{
353 if (!msg) 549 if (!msg)
354 msg = "(libev) system error"; 550 msg = "(libev) system error";
355 551
356 if (syserr_cb) 552 if (syserr_cb)
357 syserr_cb (msg); 553 syserr_cb (msg);
358 else 554 else
359 { 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
360 perror (msg); 564 perror (msg);
565#endif
361 abort (); 566 abort ();
362 } 567 }
363} 568}
364 569
365static void * 570static void *
… …
390{ 595{
391 ptr = alloc (ptr, size); 596 ptr = alloc (ptr, size);
392 597
393 if (!ptr && size) 598 if (!ptr && size)
394 { 599 {
600#if EV_AVOID_STDIO
601 ev_printerr ("libev: memory allocation failed, aborting.\n");
602#else
395 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 603 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
604#endif
396 abort (); 605 abort ();
397 } 606 }
398 607
399 return ptr; 608 return ptr;
400} 609}
… …
402#define ev_malloc(size) ev_realloc (0, (size)) 611#define ev_malloc(size) ev_realloc (0, (size))
403#define ev_free(ptr) ev_realloc ((ptr), 0) 612#define ev_free(ptr) ev_realloc ((ptr), 0)
404 613
405/*****************************************************************************/ 614/*****************************************************************************/
406 615
616/* set in reify when reification needed */
617#define EV_ANFD_REIFY 1
618
619/* file descriptor info structure */
407typedef struct 620typedef struct
408{ 621{
409 WL head; 622 WL head;
410 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 */
411 unsigned char reify; 626 unsigned char unused;
627#if EV_USE_EPOLL
628 unsigned int egen; /* generation counter to counter epoll bugs */
629#endif
412#if EV_SELECT_IS_WINSOCKET 630#if EV_SELECT_IS_WINSOCKET
413 SOCKET handle; 631 SOCKET handle;
414#endif 632#endif
415} ANFD; 633} ANFD;
416 634
635/* stores the pending event set for a given watcher */
417typedef struct 636typedef struct
418{ 637{
419 W w; 638 W w;
420 int events; 639 int events; /* the pending event set for the given watcher */
421} ANPENDING; 640} ANPENDING;
422 641
423#if EV_USE_INOTIFY 642#if EV_USE_INOTIFY
643/* hash table entry per inotify-id */
424typedef struct 644typedef struct
425{ 645{
426 WL head; 646 WL head;
427} ANFS; 647} ANFS;
648#endif
649
650/* Heap Entry */
651#if EV_HEAP_CACHE_AT
652 /* a heap element */
653 typedef struct {
654 ev_tstamp at;
655 WT w;
656 } ANHE;
657
658 #define ANHE_w(he) (he).w /* access watcher, read-write */
659 #define ANHE_at(he) (he).at /* access cached at, read-only */
660 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
661#else
662 /* a heap element */
663 typedef WT ANHE;
664
665 #define ANHE_w(he) (he)
666 #define ANHE_at(he) (he)->at
667 #define ANHE_at_cache(he)
428#endif 668#endif
429 669
430#if EV_MULTIPLICITY 670#if EV_MULTIPLICITY
431 671
432 struct ev_loop 672 struct ev_loop
… …
451 691
452 static int ev_default_loop_ptr; 692 static int ev_default_loop_ptr;
453 693
454#endif 694#endif
455 695
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
456/*****************************************************************************/ 708/*****************************************************************************/
457 709
710#ifndef EV_HAVE_EV_TIME
458ev_tstamp 711ev_tstamp
459ev_time (void) 712ev_time (void)
460{ 713{
461#if EV_USE_REALTIME 714#if EV_USE_REALTIME
715 if (expect_true (have_realtime))
716 {
462 struct timespec ts; 717 struct timespec ts;
463 clock_gettime (CLOCK_REALTIME, &ts); 718 clock_gettime (CLOCK_REALTIME, &ts);
464 return ts.tv_sec + ts.tv_nsec * 1e-9; 719 return ts.tv_sec + ts.tv_nsec * 1e-9;
465#else 720 }
721#endif
722
466 struct timeval tv; 723 struct timeval tv;
467 gettimeofday (&tv, 0); 724 gettimeofday (&tv, 0);
468 return tv.tv_sec + tv.tv_usec * 1e-6; 725 return tv.tv_sec + tv.tv_usec * 1e-6;
469#endif
470} 726}
727#endif
471 728
472ev_tstamp inline_size 729inline_size ev_tstamp
473get_clock (void) 730get_clock (void)
474{ 731{
475#if EV_USE_MONOTONIC 732#if EV_USE_MONOTONIC
476 if (expect_true (have_monotonic)) 733 if (expect_true (have_monotonic))
477 { 734 {
… …
510 struct timeval tv; 767 struct timeval tv;
511 768
512 tv.tv_sec = (time_t)delay; 769 tv.tv_sec = (time_t)delay;
513 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 770 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
514 771
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 */
515 select (0, 0, 0, 0, &tv); 775 select (0, 0, 0, 0, &tv);
516#endif 776#endif
517 } 777 }
518} 778}
519 779
520/*****************************************************************************/ 780/*****************************************************************************/
521 781
522int inline_size 782#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
783
784/* find a suitable new size for the given array, */
785/* hopefully by rounding to a ncie-to-malloc size */
786inline_size int
523array_nextsize (int elem, int cur, int cnt) 787array_nextsize (int elem, int cur, int cnt)
524{ 788{
525 int ncur = cur + 1; 789 int ncur = cur + 1;
526 790
527 do 791 do
528 ncur <<= 1; 792 ncur <<= 1;
529 while (cnt > ncur); 793 while (cnt > ncur);
530 794
531 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ 795 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
532 if (elem * ncur > 4096) 796 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
533 { 797 {
534 ncur *= elem; 798 ncur *= elem;
535 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; 799 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
536 ncur = ncur - sizeof (void *) * 4; 800 ncur = ncur - sizeof (void *) * 4;
537 ncur /= elem; 801 ncur /= elem;
538 } 802 }
539 803
540 return ncur; 804 return ncur;
… …
544array_realloc (int elem, void *base, int *cur, int cnt) 808array_realloc (int elem, void *base, int *cur, int cnt)
545{ 809{
546 *cur = array_nextsize (elem, *cur, cnt); 810 *cur = array_nextsize (elem, *cur, cnt);
547 return ev_realloc (base, elem * *cur); 811 return ev_realloc (base, elem * *cur);
548} 812}
813
814#define array_init_zero(base,count) \
815 memset ((void *)(base), 0, sizeof (*(base)) * (count))
549 816
550#define array_needsize(type,base,cur,cnt,init) \ 817#define array_needsize(type,base,cur,cnt,init) \
551 if (expect_false ((cnt) > (cur))) \ 818 if (expect_false ((cnt) > (cur))) \
552 { \ 819 { \
553 int ocur_ = (cur); \ 820 int ocur_ = (cur); \
… …
565 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 832 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
566 } 833 }
567#endif 834#endif
568 835
569#define array_free(stem, idx) \ 836#define array_free(stem, idx) \
570 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
571 838
572/*****************************************************************************/ 839/*****************************************************************************/
840
841/* dummy callback for pending events */
842static void noinline
843pendingcb (EV_P_ ev_prepare *w, int revents)
844{
845}
573 846
574void noinline 847void noinline
575ev_feed_event (EV_P_ void *w, int revents) 848ev_feed_event (EV_P_ void *w, int revents)
576{ 849{
577 W w_ = (W)w; 850 W w_ = (W)w;
… …
586 pendings [pri][w_->pending - 1].w = w_; 859 pendings [pri][w_->pending - 1].w = w_;
587 pendings [pri][w_->pending - 1].events = revents; 860 pendings [pri][w_->pending - 1].events = revents;
588 } 861 }
589} 862}
590 863
591void 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
592queue_events (EV_P_ W *events, int eventcnt, int type) 880queue_events (EV_P_ W *events, int eventcnt, int type)
593{ 881{
594 int i; 882 int i;
595 883
596 for (i = 0; i < eventcnt; ++i) 884 for (i = 0; i < eventcnt; ++i)
597 ev_feed_event (EV_A_ events [i], type); 885 ev_feed_event (EV_A_ events [i], type);
598} 886}
599 887
600/*****************************************************************************/ 888/*****************************************************************************/
601 889
602void inline_size 890inline_speed void
603anfds_init (ANFD *base, int count)
604{
605 while (count--)
606 {
607 base->head = 0;
608 base->events = EV_NONE;
609 base->reify = 0;
610
611 ++base;
612 }
613}
614
615void inline_speed
616fd_event (EV_P_ int fd, int revents) 891fd_event_nc (EV_P_ int fd, int revents)
617{ 892{
618 ANFD *anfd = anfds + fd; 893 ANFD *anfd = anfds + fd;
619 ev_io *w; 894 ev_io *w;
620 895
621 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)
… …
625 if (ev) 900 if (ev)
626 ev_feed_event (EV_A_ (W)w, ev); 901 ev_feed_event (EV_A_ (W)w, ev);
627 } 902 }
628} 903}
629 904
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
630void 916void
631ev_feed_fd_event (EV_P_ int fd, int revents) 917ev_feed_fd_event (EV_P_ int fd, int revents)
632{ 918{
633 if (fd >= 0 && fd < anfdmax) 919 if (fd >= 0 && fd < anfdmax)
634 fd_event (EV_A_ fd, revents); 920 fd_event_nc (EV_A_ fd, revents);
635} 921}
636 922
637void inline_size 923/* make sure the external fd watch events are in-sync */
924/* with the kernel/libev internal state */
925inline_size void
638fd_reify (EV_P) 926fd_reify (EV_P)
639{ 927{
640 int i; 928 int i;
641 929
642 for (i = 0; i < fdchangecnt; ++i) 930 for (i = 0; i < fdchangecnt; ++i)
… …
651 events |= (unsigned char)w->events; 939 events |= (unsigned char)w->events;
652 940
653#if EV_SELECT_IS_WINSOCKET 941#if EV_SELECT_IS_WINSOCKET
654 if (events) 942 if (events)
655 { 943 {
656 unsigned long argp; 944 unsigned long arg;
657 #ifdef EV_FD_TO_WIN32_HANDLE
658 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 945 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
659 #else
660 anfd->handle = _get_osfhandle (fd);
661 #endif
662 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));
663 } 947 }
664#endif 948#endif
665 949
666 { 950 {
667 unsigned char o_events = anfd->events; 951 unsigned char o_events = anfd->events;
668 unsigned char o_reify = anfd->reify; 952 unsigned char o_reify = anfd->reify;
669 953
670 anfd->reify = 0; 954 anfd->reify = 0;
671 anfd->events = events; 955 anfd->events = events;
672 956
673 if (o_events != events || o_reify & EV_IOFDSET) 957 if (o_events != events || o_reify & EV__IOFDSET)
674 backend_modify (EV_A_ fd, o_events, events); 958 backend_modify (EV_A_ fd, o_events, events);
675 } 959 }
676 } 960 }
677 961
678 fdchangecnt = 0; 962 fdchangecnt = 0;
679} 963}
680 964
681void inline_size 965/* something about the given fd changed */
966inline_size void
682fd_change (EV_P_ int fd, int flags) 967fd_change (EV_P_ int fd, int flags)
683{ 968{
684 unsigned char reify = anfds [fd].reify; 969 unsigned char reify = anfds [fd].reify;
685 anfds [fd].reify |= flags; 970 anfds [fd].reify |= flags;
686 971
… …
690 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 975 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
691 fdchanges [fdchangecnt - 1] = fd; 976 fdchanges [fdchangecnt - 1] = fd;
692 } 977 }
693} 978}
694 979
695void inline_speed 980/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
981inline_speed void
696fd_kill (EV_P_ int fd) 982fd_kill (EV_P_ int fd)
697{ 983{
698 ev_io *w; 984 ev_io *w;
699 985
700 while ((w = (ev_io *)anfds [fd].head)) 986 while ((w = (ev_io *)anfds [fd].head))
… …
702 ev_io_stop (EV_A_ w); 988 ev_io_stop (EV_A_ w);
703 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);
704 } 990 }
705} 991}
706 992
707int inline_size 993/* check whether the given fd is atcually valid, for error recovery */
994inline_size int
708fd_valid (int fd) 995fd_valid (int fd)
709{ 996{
710#ifdef _WIN32 997#ifdef _WIN32
711 return _get_osfhandle (fd) != -1; 998 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
712#else 999#else
713 return fcntl (fd, F_GETFD) != -1; 1000 return fcntl (fd, F_GETFD) != -1;
714#endif 1001#endif
715} 1002}
716 1003
… …
720{ 1007{
721 int fd; 1008 int fd;
722 1009
723 for (fd = 0; fd < anfdmax; ++fd) 1010 for (fd = 0; fd < anfdmax; ++fd)
724 if (anfds [fd].events) 1011 if (anfds [fd].events)
725 if (!fd_valid (fd) == -1 && errno == EBADF) 1012 if (!fd_valid (fd) && errno == EBADF)
726 fd_kill (EV_A_ fd); 1013 fd_kill (EV_A_ fd);
727} 1014}
728 1015
729/* 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 */
730static void noinline 1017static void noinline
… …
734 1021
735 for (fd = anfdmax; fd--; ) 1022 for (fd = anfdmax; fd--; )
736 if (anfds [fd].events) 1023 if (anfds [fd].events)
737 { 1024 {
738 fd_kill (EV_A_ fd); 1025 fd_kill (EV_A_ fd);
739 return; 1026 break;
740 } 1027 }
741} 1028}
742 1029
743/* 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 */
744static void noinline 1031static void noinline
… …
748 1035
749 for (fd = 0; fd < anfdmax; ++fd) 1036 for (fd = 0; fd < anfdmax; ++fd)
750 if (anfds [fd].events) 1037 if (anfds [fd].events)
751 { 1038 {
752 anfds [fd].events = 0; 1039 anfds [fd].events = 0;
1040 anfds [fd].emask = 0;
753 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1041 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
754 } 1042 }
755} 1043}
756 1044
757/*****************************************************************************/ 1045/*****************************************************************************/
758 1046
1047/*
1048 * the heap functions want a real array index. array index 0 uis guaranteed to not
1049 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1050 * the branching factor of the d-tree.
1051 */
1052
1053/*
1054 * at the moment we allow libev the luxury of two heaps,
1055 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
1056 * which is more cache-efficient.
1057 * the difference is about 5% with 50000+ watchers.
1058 */
1059#if EV_USE_4HEAP
1060
1061#define DHEAP 4
1062#define HEAP0 (DHEAP - 1) /* index of first element in heap */
1063#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
1064#define UPHEAP_DONE(p,k) ((p) == (k))
1065
1066/* away from the root */
1067inline_speed void
1068downheap (ANHE *heap, int N, int k)
1069{
1070 ANHE he = heap [k];
1071 ANHE *E = heap + N + HEAP0;
1072
1073 for (;;)
1074 {
1075 ev_tstamp minat;
1076 ANHE *minpos;
1077 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1078
1079 /* find minimum child */
1080 if (expect_true (pos + DHEAP - 1 < E))
1081 {
1082 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1083 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1084 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1085 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1086 }
1087 else if (pos < E)
1088 {
1089 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1090 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1091 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1092 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1093 }
1094 else
1095 break;
1096
1097 if (ANHE_at (he) <= minat)
1098 break;
1099
1100 heap [k] = *minpos;
1101 ev_active (ANHE_w (*minpos)) = k;
1102
1103 k = minpos - heap;
1104 }
1105
1106 heap [k] = he;
1107 ev_active (ANHE_w (he)) = k;
1108}
1109
1110#else /* 4HEAP */
1111
1112#define HEAP0 1
1113#define HPARENT(k) ((k) >> 1)
1114#define UPHEAP_DONE(p,k) (!(p))
1115
1116/* away from the root */
1117inline_speed void
1118downheap (ANHE *heap, int N, int k)
1119{
1120 ANHE he = heap [k];
1121
1122 for (;;)
1123 {
1124 int c = k << 1;
1125
1126 if (c >= N + HEAP0)
1127 break;
1128
1129 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1130 ? 1 : 0;
1131
1132 if (ANHE_at (he) <= ANHE_at (heap [c]))
1133 break;
1134
1135 heap [k] = heap [c];
1136 ev_active (ANHE_w (heap [k])) = k;
1137
1138 k = c;
1139 }
1140
1141 heap [k] = he;
1142 ev_active (ANHE_w (he)) = k;
1143}
1144#endif
1145
759/* towards the root */ 1146/* towards the root */
760void inline_speed 1147inline_speed void
761upheap (WT *heap, int k) 1148upheap (ANHE *heap, int k)
762{ 1149{
763 WT w = heap [k]; 1150 ANHE he = heap [k];
764 1151
765 while (k) 1152 for (;;)
766 { 1153 {
767 int p = (k - 1) >> 1; 1154 int p = HPARENT (k);
768 1155
769 if (heap [p]->at <= w->at) 1156 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
770 break; 1157 break;
771 1158
772 heap [k] = heap [p]; 1159 heap [k] = heap [p];
773 ((W)heap [k])->active = k + 1; 1160 ev_active (ANHE_w (heap [k])) = k;
774 k = p; 1161 k = p;
775 } 1162 }
776 1163
777 heap [k] = w; 1164 heap [k] = he;
778 ((W)heap [k])->active = k + 1; 1165 ev_active (ANHE_w (he)) = k;
779} 1166}
780 1167
781/* away from the root */ 1168/* move an element suitably so it is in a correct place */
782void inline_speed 1169inline_size void
783downheap (WT *heap, int N, int k)
784{
785 WT w = heap [k];
786
787 for (;;)
788 {
789 int c = (k << 1) + 1;
790
791 if (c >= N)
792 break;
793
794 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
795 ? 1 : 0;
796
797 if (w->at <= heap [c]->at)
798 break;
799
800 heap [k] = heap [c];
801 ((W)heap [k])->active = k + 1;
802
803 k = c;
804 }
805
806 heap [k] = w;
807 ((W)heap [k])->active = k + 1;
808}
809
810void inline_size
811adjustheap (WT *heap, int N, int k) 1170adjustheap (ANHE *heap, int N, int k)
812{ 1171{
1172 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
813 upheap (heap, k); 1173 upheap (heap, k);
1174 else
814 downheap (heap, N, k); 1175 downheap (heap, N, k);
1176}
1177
1178/* rebuild the heap: this function is used only once and executed rarely */
1179inline_size void
1180reheap (ANHE *heap, int N)
1181{
1182 int i;
1183
1184 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1185 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1186 for (i = 0; i < N; ++i)
1187 upheap (heap, i + HEAP0);
815} 1188}
816 1189
817/*****************************************************************************/ 1190/*****************************************************************************/
818 1191
1192/* associate signal watchers to a signal signal */
819typedef struct 1193typedef struct
820{ 1194{
1195 EV_ATOMIC_T pending;
1196#if EV_MULTIPLICITY
1197 EV_P;
1198#endif
821 WL head; 1199 WL head;
822 EV_ATOMIC_T gotsig;
823} ANSIG; 1200} ANSIG;
824 1201
825static ANSIG *signals; 1202static ANSIG signals [EV_NSIG - 1];
826static int signalmax;
827
828static EV_ATOMIC_T gotsig;
829
830void inline_size
831signals_init (ANSIG *base, int count)
832{
833 while (count--)
834 {
835 base->head = 0;
836 base->gotsig = 0;
837
838 ++base;
839 }
840}
841 1203
842/*****************************************************************************/ 1204/*****************************************************************************/
843 1205
844void inline_speed 1206/* used to prepare libev internal fd's */
1207/* this is not fork-safe */
1208inline_speed void
845fd_intern (int fd) 1209fd_intern (int fd)
846{ 1210{
847#ifdef _WIN32 1211#ifdef _WIN32
848 int arg = 1; 1212 unsigned long arg = 1;
849 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1213 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
850#else 1214#else
851 fcntl (fd, F_SETFD, FD_CLOEXEC); 1215 fcntl (fd, F_SETFD, FD_CLOEXEC);
852 fcntl (fd, F_SETFL, O_NONBLOCK); 1216 fcntl (fd, F_SETFL, O_NONBLOCK);
853#endif 1217#endif
854} 1218}
855 1219
856static void noinline 1220static void noinline
857evpipe_init (EV_P) 1221evpipe_init (EV_P)
858{ 1222{
859 if (!ev_is_active (&pipeev)) 1223 if (!ev_is_active (&pipe_w))
860 { 1224 {
861#if EV_USE_EVENTFD 1225#if EV_USE_EVENTFD
1226 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1227 if (evfd < 0 && errno == EINVAL)
862 if ((evfd = eventfd (0, 0)) >= 0) 1228 evfd = eventfd (0, 0);
1229
1230 if (evfd >= 0)
863 { 1231 {
864 evpipe [0] = -1; 1232 evpipe [0] = -1;
865 fd_intern (evfd); 1233 fd_intern (evfd); /* doing it twice doesn't hurt */
866 ev_io_set (&pipeev, evfd, EV_READ); 1234 ev_io_set (&pipe_w, evfd, EV_READ);
867 } 1235 }
868 else 1236 else
869#endif 1237#endif
870 { 1238 {
871 while (pipe (evpipe)) 1239 while (pipe (evpipe))
872 syserr ("(libev) error creating signal/async pipe"); 1240 ev_syserr ("(libev) error creating signal/async pipe");
873 1241
874 fd_intern (evpipe [0]); 1242 fd_intern (evpipe [0]);
875 fd_intern (evpipe [1]); 1243 fd_intern (evpipe [1]);
876 ev_io_set (&pipeev, evpipe [0], EV_READ); 1244 ev_io_set (&pipe_w, evpipe [0], EV_READ);
877 } 1245 }
878 1246
879 ev_io_start (EV_A_ &pipeev); 1247 ev_io_start (EV_A_ &pipe_w);
880 ev_unref (EV_A); /* watcher should not keep loop alive */ 1248 ev_unref (EV_A); /* watcher should not keep loop alive */
881 } 1249 }
882} 1250}
883 1251
884void inline_size 1252inline_size void
885evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1253evpipe_write (EV_P_ EV_ATOMIC_T *flag)
886{ 1254{
887 if (!*flag) 1255 if (!*flag)
888 { 1256 {
889 int old_errno = errno; /* save errno because write might clobber it */ 1257 int old_errno = errno; /* save errno because write might clobber it */
… …
902 1270
903 errno = old_errno; 1271 errno = old_errno;
904 } 1272 }
905} 1273}
906 1274
1275/* called whenever the libev signal pipe */
1276/* got some events (signal, async) */
907static void 1277static void
908pipecb (EV_P_ ev_io *iow, int revents) 1278pipecb (EV_P_ ev_io *iow, int revents)
909{ 1279{
1280 int i;
1281
910#if EV_USE_EVENTFD 1282#if EV_USE_EVENTFD
911 if (evfd >= 0) 1283 if (evfd >= 0)
912 { 1284 {
913 uint64_t counter = 1; 1285 uint64_t counter;
914 read (evfd, &counter, sizeof (uint64_t)); 1286 read (evfd, &counter, sizeof (uint64_t));
915 } 1287 }
916 else 1288 else
917#endif 1289#endif
918 { 1290 {
919 char dummy; 1291 char dummy;
920 read (evpipe [0], &dummy, 1); 1292 read (evpipe [0], &dummy, 1);
921 } 1293 }
922 1294
923 if (gotsig && ev_is_default_loop (EV_A)) 1295 if (sig_pending)
924 { 1296 {
925 int signum; 1297 sig_pending = 0;
926 gotsig = 0;
927 1298
928 for (signum = signalmax; signum--; ) 1299 for (i = EV_NSIG - 1; i--; )
929 if (signals [signum].gotsig) 1300 if (expect_false (signals [i].pending))
930 ev_feed_signal_event (EV_A_ signum + 1); 1301 ev_feed_signal_event (EV_A_ i + 1);
931 } 1302 }
932 1303
933#if EV_ASYNC_ENABLE 1304#if EV_ASYNC_ENABLE
934 if (gotasync) 1305 if (async_pending)
935 { 1306 {
936 int i; 1307 async_pending = 0;
937 gotasync = 0;
938 1308
939 for (i = asynccnt; i--; ) 1309 for (i = asynccnt; i--; )
940 if (asyncs [i]->sent) 1310 if (asyncs [i]->sent)
941 { 1311 {
942 asyncs [i]->sent = 0; 1312 asyncs [i]->sent = 0;
… …
950 1320
951static void 1321static void
952ev_sighandler (int signum) 1322ev_sighandler (int signum)
953{ 1323{
954#if EV_MULTIPLICITY 1324#if EV_MULTIPLICITY
955 struct ev_loop *loop = &default_loop_struct; 1325 EV_P = signals [signum - 1].loop;
956#endif 1326#endif
957 1327
958#if _WIN32 1328#ifdef _WIN32
959 signal (signum, ev_sighandler); 1329 signal (signum, ev_sighandler);
960#endif 1330#endif
961 1331
962 signals [signum - 1].gotsig = 1; 1332 signals [signum - 1].pending = 1;
963 evpipe_write (EV_A_ &gotsig); 1333 evpipe_write (EV_A_ &sig_pending);
964} 1334}
965 1335
966void noinline 1336void noinline
967ev_feed_signal_event (EV_P_ int signum) 1337ev_feed_signal_event (EV_P_ int signum)
968{ 1338{
969 WL w; 1339 WL w;
970 1340
1341 if (expect_false (signum <= 0 || signum > EV_NSIG))
1342 return;
1343
1344 --signum;
1345
971#if EV_MULTIPLICITY 1346#if EV_MULTIPLICITY
972 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 */
973#endif 1348 /* or, likely more useful, feeding a signal nobody is waiting for */
974 1349
975 --signum; 1350 if (expect_false (signals [signum].loop != EV_A))
976
977 if (signum < 0 || signum >= signalmax)
978 return; 1351 return;
1352#endif
979 1353
980 signals [signum].gotsig = 0; 1354 signals [signum].pending = 0;
981 1355
982 for (w = signals [signum].head; w; w = w->next) 1356 for (w = signals [signum].head; w; w = w->next)
983 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1357 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
984} 1358}
985 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
986/*****************************************************************************/ 1380/*****************************************************************************/
987 1381
988static WL childs [EV_PID_HASHSIZE]; 1382static WL childs [EV_PID_HASHSIZE];
989 1383
990#ifndef _WIN32 1384#ifndef _WIN32
… …
993 1387
994#ifndef WIFCONTINUED 1388#ifndef WIFCONTINUED
995# define WIFCONTINUED(status) 0 1389# define WIFCONTINUED(status) 0
996#endif 1390#endif
997 1391
998void inline_speed 1392/* handle a single child status event */
1393inline_speed void
999child_reap (EV_P_ int chain, int pid, int status) 1394child_reap (EV_P_ int chain, int pid, int status)
1000{ 1395{
1001 ev_child *w; 1396 ev_child *w;
1002 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1397 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1003 1398
… …
1016 1411
1017#ifndef WCONTINUED 1412#ifndef WCONTINUED
1018# define WCONTINUED 0 1413# define WCONTINUED 0
1019#endif 1414#endif
1020 1415
1416/* called on sigchld etc., calls waitpid */
1021static void 1417static void
1022childcb (EV_P_ ev_signal *sw, int revents) 1418childcb (EV_P_ ev_signal *sw, int revents)
1023{ 1419{
1024 int pid, status; 1420 int pid, status;
1025 1421
… …
1106 /* kqueue is borked on everything but netbsd apparently */ 1502 /* kqueue is borked on everything but netbsd apparently */
1107 /* 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 */
1108 flags &= ~EVBACKEND_KQUEUE; 1504 flags &= ~EVBACKEND_KQUEUE;
1109#endif 1505#endif
1110#ifdef __APPLE__ 1506#ifdef __APPLE__
1111 // flags &= ~EVBACKEND_KQUEUE; for documentation 1507 /* only select works correctly on that "unix-certified" platform */
1112 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 */
1113#endif 1510#endif
1114 1511
1115 return flags; 1512 return flags;
1116} 1513}
1117 1514
… …
1131ev_backend (EV_P) 1528ev_backend (EV_P)
1132{ 1529{
1133 return backend; 1530 return backend;
1134} 1531}
1135 1532
1533#if EV_MINIMAL < 2
1136unsigned int 1534unsigned int
1137ev_loop_count (EV_P) 1535ev_loop_count (EV_P)
1138{ 1536{
1139 return loop_count; 1537 return loop_count;
1140} 1538}
1141 1539
1540unsigned int
1541ev_loop_depth (EV_P)
1542{
1543 return loop_depth;
1544}
1545
1142void 1546void
1143ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1547ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1144{ 1548{
1145 io_blocktime = interval; 1549 io_blocktime = interval;
1146} 1550}
… …
1149ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1553ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1150{ 1554{
1151 timeout_blocktime = interval; 1555 timeout_blocktime = interval;
1152} 1556}
1153 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 */
1154static void noinline 1583static void noinline
1155loop_init (EV_P_ unsigned int flags) 1584loop_init (EV_P_ unsigned int flags)
1156{ 1585{
1157 if (!backend) 1586 if (!backend)
1158 { 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
1159#if EV_USE_MONOTONIC 1598#if EV_USE_MONOTONIC
1599 if (!have_monotonic)
1160 { 1600 {
1161 struct timespec ts; 1601 struct timespec ts;
1602
1162 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1603 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1163 have_monotonic = 1; 1604 have_monotonic = 1;
1164 } 1605 }
1165#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"));
1166 1618
1167 ev_rt_now = ev_time (); 1619 ev_rt_now = ev_time ();
1168 mn_now = get_clock (); 1620 mn_now = get_clock ();
1169 now_floor = mn_now; 1621 now_floor = mn_now;
1170 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
1171 1626
1172 io_blocktime = 0.; 1627 io_blocktime = 0.;
1173 timeout_blocktime = 0.; 1628 timeout_blocktime = 0.;
1174 backend = 0; 1629 backend = 0;
1175 backend_fd = -1; 1630 backend_fd = -1;
1176 gotasync = 0; 1631 sig_pending = 0;
1632#if EV_ASYNC_ENABLE
1633 async_pending = 0;
1634#endif
1177#if EV_USE_INOTIFY 1635#if EV_USE_INOTIFY
1178 fs_fd = -2; 1636 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1179#endif 1637#endif
1180 1638#if EV_USE_SIGNALFD
1181 /* pid check not overridable via env */ 1639 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1182#ifndef _WIN32
1183 if (flags & EVFLAG_FORKCHECK)
1184 curpid = getpid ();
1185#endif 1640#endif
1186
1187 if (!(flags & EVFLAG_NOENV)
1188 && !enable_secure ()
1189 && getenv ("LIBEV_FLAGS"))
1190 flags = atoi (getenv ("LIBEV_FLAGS"));
1191 1641
1192 if (!(flags & 0x0000ffffU)) 1642 if (!(flags & 0x0000ffffU))
1193 flags |= ev_recommended_backends (); 1643 flags |= ev_recommended_backends ();
1194 1644
1195#if EV_USE_PORT 1645#if EV_USE_PORT
… …
1206#endif 1656#endif
1207#if EV_USE_SELECT 1657#if EV_USE_SELECT
1208 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1658 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1209#endif 1659#endif
1210 1660
1661 ev_prepare_init (&pending_w, pendingcb);
1662
1211 ev_init (&pipeev, pipecb); 1663 ev_init (&pipe_w, pipecb);
1212 ev_set_priority (&pipeev, EV_MAXPRI); 1664 ev_set_priority (&pipe_w, EV_MAXPRI);
1213 } 1665 }
1214} 1666}
1215 1667
1668/* free up a loop structure */
1216static void noinline 1669static void noinline
1217loop_destroy (EV_P) 1670loop_destroy (EV_P)
1218{ 1671{
1219 int i; 1672 int i;
1220 1673
1221 if (ev_is_active (&pipeev)) 1674 if (ev_is_active (&pipe_w))
1222 { 1675 {
1223 ev_ref (EV_A); /* signal watcher */ 1676 /*ev_ref (EV_A);*/
1224 ev_io_stop (EV_A_ &pipeev); 1677 /*ev_io_stop (EV_A_ &pipe_w);*/
1225 1678
1226#if EV_USE_EVENTFD 1679#if EV_USE_EVENTFD
1227 if (evfd >= 0) 1680 if (evfd >= 0)
1228 close (evfd); 1681 close (evfd);
1229#endif 1682#endif
1230 1683
1231 if (evpipe [0] >= 0) 1684 if (evpipe [0] >= 0)
1232 { 1685 {
1233 close (evpipe [0]); 1686 EV_WIN32_CLOSE_FD (evpipe [0]);
1234 close (evpipe [1]); 1687 EV_WIN32_CLOSE_FD (evpipe [1]);
1235 } 1688 }
1236 } 1689 }
1690
1691#if EV_USE_SIGNALFD
1692 if (ev_is_active (&sigfd_w))
1693 close (sigfd);
1694#endif
1237 1695
1238#if EV_USE_INOTIFY 1696#if EV_USE_INOTIFY
1239 if (fs_fd >= 0) 1697 if (fs_fd >= 0)
1240 close (fs_fd); 1698 close (fs_fd);
1241#endif 1699#endif
… …
1265#if EV_IDLE_ENABLE 1723#if EV_IDLE_ENABLE
1266 array_free (idle, [i]); 1724 array_free (idle, [i]);
1267#endif 1725#endif
1268 } 1726 }
1269 1727
1270 ev_free (anfds); anfdmax = 0; 1728 ev_free (anfds); anfds = 0; anfdmax = 0;
1271 1729
1272 /* 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);
1273 array_free (fdchange, EMPTY); 1732 array_free (fdchange, EMPTY);
1274 array_free (timer, EMPTY); 1733 array_free (timer, EMPTY);
1275#if EV_PERIODIC_ENABLE 1734#if EV_PERIODIC_ENABLE
1276 array_free (periodic, EMPTY); 1735 array_free (periodic, EMPTY);
1277#endif 1736#endif
… …
1286 1745
1287 backend = 0; 1746 backend = 0;
1288} 1747}
1289 1748
1290#if EV_USE_INOTIFY 1749#if EV_USE_INOTIFY
1291void inline_size infy_fork (EV_P); 1750inline_size void infy_fork (EV_P);
1292#endif 1751#endif
1293 1752
1294void inline_size 1753inline_size void
1295loop_fork (EV_P) 1754loop_fork (EV_P)
1296{ 1755{
1297#if EV_USE_PORT 1756#if EV_USE_PORT
1298 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1757 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1299#endif 1758#endif
… …
1305#endif 1764#endif
1306#if EV_USE_INOTIFY 1765#if EV_USE_INOTIFY
1307 infy_fork (EV_A); 1766 infy_fork (EV_A);
1308#endif 1767#endif
1309 1768
1310 if (ev_is_active (&pipeev)) 1769 if (ev_is_active (&pipe_w))
1311 { 1770 {
1312 /* this "locks" the handlers against writing to the pipe */ 1771 /* this "locks" the handlers against writing to the pipe */
1313 /* while we modify the fd vars */ 1772 /* while we modify the fd vars */
1314 gotsig = 1; 1773 sig_pending = 1;
1315#if EV_ASYNC_ENABLE 1774#if EV_ASYNC_ENABLE
1316 gotasync = 1; 1775 async_pending = 1;
1317#endif 1776#endif
1318 1777
1319 ev_ref (EV_A); 1778 ev_ref (EV_A);
1320 ev_io_stop (EV_A_ &pipeev); 1779 ev_io_stop (EV_A_ &pipe_w);
1321 1780
1322#if EV_USE_EVENTFD 1781#if EV_USE_EVENTFD
1323 if (evfd >= 0) 1782 if (evfd >= 0)
1324 close (evfd); 1783 close (evfd);
1325#endif 1784#endif
1326 1785
1327 if (evpipe [0] >= 0) 1786 if (evpipe [0] >= 0)
1328 { 1787 {
1329 close (evpipe [0]); 1788 EV_WIN32_CLOSE_FD (evpipe [0]);
1330 close (evpipe [1]); 1789 EV_WIN32_CLOSE_FD (evpipe [1]);
1331 } 1790 }
1332 1791
1333 evpipe_init (EV_A); 1792 evpipe_init (EV_A);
1334 /* now iterate over everything, in case we missed something */ 1793 /* now iterate over everything, in case we missed something */
1335 pipecb (EV_A_ &pipeev, EV_READ); 1794 pipecb (EV_A_ &pipe_w, EV_READ);
1336 } 1795 }
1337 1796
1338 postfork = 0; 1797 postfork = 0;
1339} 1798}
1340 1799
1341#if EV_MULTIPLICITY 1800#if EV_MULTIPLICITY
1801
1342struct ev_loop * 1802struct ev_loop *
1343ev_loop_new (unsigned int flags) 1803ev_loop_new (unsigned int flags)
1344{ 1804{
1345 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));
1346 1806
1347 memset (loop, 0, sizeof (struct ev_loop)); 1807 memset (EV_A, 0, sizeof (struct ev_loop));
1348
1349 loop_init (EV_A_ flags); 1808 loop_init (EV_A_ flags);
1350 1809
1351 if (ev_backend (EV_A)) 1810 if (ev_backend (EV_A))
1352 return loop; 1811 return EV_A;
1353 1812
1354 return 0; 1813 return 0;
1355} 1814}
1356 1815
1357void 1816void
… …
1364void 1823void
1365ev_loop_fork (EV_P) 1824ev_loop_fork (EV_P)
1366{ 1825{
1367 postfork = 1; /* must be in line with ev_default_fork */ 1826 postfork = 1; /* must be in line with ev_default_fork */
1368} 1827}
1828#endif /* multiplicity */
1369 1829
1830#if EV_VERIFY
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
1856array_verify (EV_P_ W *ws, int cnt)
1857{
1858 while (cnt--)
1859 {
1860 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1861 verify_watcher (EV_A_ ws [cnt]);
1862 }
1863}
1864#endif
1865
1866#if EV_MINIMAL < 2
1867void
1868ev_loop_verify (EV_P)
1869{
1870#if EV_VERIFY
1871 int i;
1872 WL w;
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);
1890 verify_heap (EV_A_ timers, timercnt);
1891
1892#if EV_PERIODIC_ENABLE
1893 assert (periodicmax >= periodiccnt);
1894 verify_heap (EV_A_ periodics, periodiccnt);
1895#endif
1896
1897 for (i = NUMPRI; i--; )
1898 {
1899 assert (pendingmax [i] >= pendingcnt [i]);
1900#if EV_IDLE_ENABLE
1901 assert (idleall >= 0);
1902 assert (idlemax [i] >= idlecnt [i]);
1903 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1904#endif
1905 }
1906
1907#if EV_FORK_ENABLE
1908 assert (forkmax >= forkcnt);
1909 array_verify (EV_A_ (W *)forks, forkcnt);
1910#endif
1911
1912#if EV_ASYNC_ENABLE
1913 assert (asyncmax >= 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)
1926# endif
1927#endif
1928}
1370#endif 1929#endif
1371 1930
1372#if EV_MULTIPLICITY 1931#if EV_MULTIPLICITY
1373struct ev_loop * 1932struct ev_loop *
1374ev_default_loop_init (unsigned int flags) 1933ev_default_loop_init (unsigned int flags)
… …
1378#endif 1937#endif
1379{ 1938{
1380 if (!ev_default_loop_ptr) 1939 if (!ev_default_loop_ptr)
1381 { 1940 {
1382#if EV_MULTIPLICITY 1941#if EV_MULTIPLICITY
1383 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1942 EV_P = ev_default_loop_ptr = &default_loop_struct;
1384#else 1943#else
1385 ev_default_loop_ptr = 1; 1944 ev_default_loop_ptr = 1;
1386#endif 1945#endif
1387 1946
1388 loop_init (EV_A_ flags); 1947 loop_init (EV_A_ flags);
… …
1405 1964
1406void 1965void
1407ev_default_destroy (void) 1966ev_default_destroy (void)
1408{ 1967{
1409#if EV_MULTIPLICITY 1968#if EV_MULTIPLICITY
1410 struct ev_loop *loop = ev_default_loop_ptr; 1969 EV_P = ev_default_loop_ptr;
1411#endif 1970#endif
1971
1972 ev_default_loop_ptr = 0;
1412 1973
1413#ifndef _WIN32 1974#ifndef _WIN32
1414 ev_ref (EV_A); /* child watcher */ 1975 ev_ref (EV_A); /* child watcher */
1415 ev_signal_stop (EV_A_ &childev); 1976 ev_signal_stop (EV_A_ &childev);
1416#endif 1977#endif
… …
1420 1981
1421void 1982void
1422ev_default_fork (void) 1983ev_default_fork (void)
1423{ 1984{
1424#if EV_MULTIPLICITY 1985#if EV_MULTIPLICITY
1425 struct ev_loop *loop = ev_default_loop_ptr; 1986 EV_P = ev_default_loop_ptr;
1426#endif 1987#endif
1427 1988
1428 if (backend)
1429 postfork = 1; /* must be in line with ev_loop_fork */ 1989 postfork = 1; /* must be in line with ev_loop_fork */
1430} 1990}
1431 1991
1432/*****************************************************************************/ 1992/*****************************************************************************/
1433 1993
1434void 1994void
1435ev_invoke (EV_P_ void *w, int revents) 1995ev_invoke (EV_P_ void *w, int revents)
1436{ 1996{
1437 EV_CB_INVOKE ((W)w, revents); 1997 EV_CB_INVOKE ((W)w, revents);
1438} 1998}
1439 1999
1440void inline_speed 2000unsigned int
1441call_pending (EV_P) 2001ev_pending_count (EV_P)
2002{
2003 int pri;
2004 unsigned int count = 0;
2005
2006 for (pri = NUMPRI; pri--; )
2007 count += pendingcnt [pri];
2008
2009 return count;
2010}
2011
2012void noinline
2013ev_invoke_pending (EV_P)
1442{ 2014{
1443 int pri; 2015 int pri;
1444 2016
1445 for (pri = NUMPRI; pri--; ) 2017 for (pri = NUMPRI; pri--; )
1446 while (pendingcnt [pri]) 2018 while (pendingcnt [pri])
1447 { 2019 {
1448 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2020 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1449 2021
1450 if (expect_true (p->w))
1451 {
1452 /*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 */
1453 2024
1454 p->w->pending = 0; 2025 p->w->pending = 0;
1455 EV_CB_INVOKE (p->w, p->events); 2026 EV_CB_INVOKE (p->w, p->events);
1456 } 2027 EV_FREQUENT_CHECK;
1457 } 2028 }
1458} 2029}
1459 2030
1460void inline_size
1461timers_reify (EV_P)
1462{
1463 while (timercnt && ((WT)timers [0])->at <= mn_now)
1464 {
1465 ev_timer *w = (ev_timer *)timers [0];
1466
1467 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1468
1469 /* first reschedule or stop timer */
1470 if (w->repeat)
1471 {
1472 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1473
1474 ((WT)w)->at += w->repeat;
1475 if (((WT)w)->at < mn_now)
1476 ((WT)w)->at = mn_now;
1477
1478 downheap (timers, timercnt, 0);
1479 }
1480 else
1481 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1482
1483 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1484 }
1485}
1486
1487#if EV_PERIODIC_ENABLE
1488void inline_size
1489periodics_reify (EV_P)
1490{
1491 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1492 {
1493 ev_periodic *w = (ev_periodic *)periodics [0];
1494
1495 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1496
1497 /* first reschedule or stop timer */
1498 if (w->reschedule_cb)
1499 {
1500 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1501 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1502 downheap (periodics, periodiccnt, 0);
1503 }
1504 else if (w->interval)
1505 {
1506 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1507 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1508 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1509 downheap (periodics, periodiccnt, 0);
1510 }
1511 else
1512 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1513
1514 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1515 }
1516}
1517
1518static void noinline
1519periodics_reschedule (EV_P)
1520{
1521 int i;
1522
1523 /* adjust periodics after time jump */
1524 for (i = 0; i < periodiccnt; ++i)
1525 {
1526 ev_periodic *w = (ev_periodic *)periodics [i];
1527
1528 if (w->reschedule_cb)
1529 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1530 else if (w->interval)
1531 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1532 }
1533
1534 /* now rebuild the heap */
1535 for (i = periodiccnt >> 1; i--; )
1536 downheap (periodics, periodiccnt, i);
1537}
1538#endif
1539
1540#if EV_IDLE_ENABLE 2031#if EV_IDLE_ENABLE
1541void inline_size 2032/* make idle watchers pending. this handles the "call-idle */
2033/* only when higher priorities are idle" logic */
2034inline_size void
1542idle_reify (EV_P) 2035idle_reify (EV_P)
1543{ 2036{
1544 if (expect_false (idleall)) 2037 if (expect_false (idleall))
1545 { 2038 {
1546 int pri; 2039 int pri;
… …
1558 } 2051 }
1559 } 2052 }
1560} 2053}
1561#endif 2054#endif
1562 2055
1563void inline_speed 2056/* make timers pending */
2057inline_size void
2058timers_reify (EV_P)
2059{
2060 EV_FREQUENT_CHECK;
2061
2062 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
2063 {
2064 do
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 {
2073 ev_at (w) += w->repeat;
2074 if (ev_at (w) < mn_now)
2075 ev_at (w) = mn_now;
2076
2077 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
2078
2079 ANHE_at_cache (timers [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);
2087 }
2088 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2089
2090 feed_reverse_done (EV_A_ EV_TIMEOUT);
2091 }
2092}
2093
2094#if EV_PERIODIC_ENABLE
2095/* make periodics pending */
2096inline_size void
2097periodics_reify (EV_P)
2098{
2099 EV_FREQUENT_CHECK;
2100
2101 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2102 {
2103 int feed_count = 0;
2104
2105 do
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 {
2114 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2115
2116 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
2117
2118 ANHE_at_cache (periodics [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
2143 EV_FREQUENT_CHECK;
2144 feed_reverse (EV_A_ (W)w);
2145 }
2146 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
2147
2148 feed_reverse_done (EV_A_ EV_PERIODIC);
2149 }
2150}
2151
2152/* simply recalculate all periodics */
2153/* TODO: maybe ensure that at leats one event happens when jumping forward? */
2154static void noinline
2155periodics_reschedule (EV_P)
2156{
2157 int i;
2158
2159 /* adjust periodics after time jump */
2160 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
2161 {
2162 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2163
2164 if (w->reschedule_cb)
2165 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2166 else if (w->interval)
2167 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2168
2169 ANHE_at_cache (periodics [i]);
2170 }
2171
2172 reheap (periodics, periodiccnt);
2173}
2174#endif
2175
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
1564time_update (EV_P_ ev_tstamp max_block) 2193time_update (EV_P_ ev_tstamp max_block)
1565{ 2194{
1566 int i;
1567
1568#if EV_USE_MONOTONIC 2195#if EV_USE_MONOTONIC
1569 if (expect_true (have_monotonic)) 2196 if (expect_true (have_monotonic))
1570 { 2197 {
2198 int i;
1571 ev_tstamp odiff = rtmn_diff; 2199 ev_tstamp odiff = rtmn_diff;
1572 2200
1573 mn_now = get_clock (); 2201 mn_now = get_clock ();
1574 2202
1575 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2203 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1593 */ 2221 */
1594 for (i = 4; --i; ) 2222 for (i = 4; --i; )
1595 { 2223 {
1596 rtmn_diff = ev_rt_now - mn_now; 2224 rtmn_diff = ev_rt_now - mn_now;
1597 2225
1598 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 2226 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1599 return; /* all is well */ 2227 return; /* all is well */
1600 2228
1601 ev_rt_now = ev_time (); 2229 ev_rt_now = ev_time ();
1602 mn_now = get_clock (); 2230 mn_now = get_clock ();
1603 now_floor = mn_now; 2231 now_floor = mn_now;
1604 } 2232 }
1605 2233
2234 /* no timer adjustment, as the monotonic clock doesn't jump */
2235 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1606# if EV_PERIODIC_ENABLE 2236# if EV_PERIODIC_ENABLE
1607 periodics_reschedule (EV_A); 2237 periodics_reschedule (EV_A);
1608# endif 2238# endif
1609 /* no timer adjustment, as the monotonic clock doesn't jump */
1610 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1611 } 2239 }
1612 else 2240 else
1613#endif 2241#endif
1614 { 2242 {
1615 ev_rt_now = ev_time (); 2243 ev_rt_now = ev_time ();
1616 2244
1617 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))
1618 { 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);
1619#if EV_PERIODIC_ENABLE 2249#if EV_PERIODIC_ENABLE
1620 periodics_reschedule (EV_A); 2250 periodics_reschedule (EV_A);
1621#endif 2251#endif
1622 /* adjust timers. this is easy, as the offset is the same for all of them */
1623 for (i = 0; i < timercnt; ++i)
1624 ((WT)timers [i])->at += ev_rt_now - mn_now;
1625 } 2252 }
1626 2253
1627 mn_now = ev_rt_now; 2254 mn_now = ev_rt_now;
1628 } 2255 }
1629} 2256}
1630 2257
1631void 2258void
1632ev_ref (EV_P)
1633{
1634 ++activecnt;
1635}
1636
1637void
1638ev_unref (EV_P)
1639{
1640 --activecnt;
1641}
1642
1643static int loop_done;
1644
1645void
1646ev_loop (EV_P_ int flags) 2259ev_loop (EV_P_ int flags)
1647{ 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
1648 loop_done = EVUNLOOP_CANCEL; 2267 loop_done = EVUNLOOP_CANCEL;
1649 2268
1650 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 */
1651 2270
1652 do 2271 do
1653 { 2272 {
2273#if EV_VERIFY >= 2
2274 ev_loop_verify (EV_A);
2275#endif
2276
1654#ifndef _WIN32 2277#ifndef _WIN32
1655 if (expect_false (curpid)) /* penalise the forking check even more */ 2278 if (expect_false (curpid)) /* penalise the forking check even more */
1656 if (expect_false (getpid () != curpid)) 2279 if (expect_false (getpid () != curpid))
1657 { 2280 {
1658 curpid = getpid (); 2281 curpid = getpid ();
… …
1664 /* we might have forked, so queue fork handlers */ 2287 /* we might have forked, so queue fork handlers */
1665 if (expect_false (postfork)) 2288 if (expect_false (postfork))
1666 if (forkcnt) 2289 if (forkcnt)
1667 { 2290 {
1668 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2291 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1669 call_pending (EV_A); 2292 EV_INVOKE_PENDING;
1670 } 2293 }
1671#endif 2294#endif
1672 2295
1673 /* queue prepare watchers (and execute them) */ 2296 /* queue prepare watchers (and execute them) */
1674 if (expect_false (preparecnt)) 2297 if (expect_false (preparecnt))
1675 { 2298 {
1676 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2299 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1677 call_pending (EV_A); 2300 EV_INVOKE_PENDING;
1678 } 2301 }
1679 2302
1680 if (expect_false (!activecnt)) 2303 if (expect_false (loop_done))
1681 break; 2304 break;
1682 2305
1683 /* we might have forked, so reify kernel state if necessary */ 2306 /* we might have forked, so reify kernel state if necessary */
1684 if (expect_false (postfork)) 2307 if (expect_false (postfork))
1685 loop_fork (EV_A); 2308 loop_fork (EV_A);
… …
1692 ev_tstamp waittime = 0.; 2315 ev_tstamp waittime = 0.;
1693 ev_tstamp sleeptime = 0.; 2316 ev_tstamp sleeptime = 0.;
1694 2317
1695 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2318 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1696 { 2319 {
2320 /* remember old timestamp for io_blocktime calculation */
2321 ev_tstamp prev_mn_now = mn_now;
2322
1697 /* update time to cancel out callback processing overhead */ 2323 /* update time to cancel out callback processing overhead */
1698 time_update (EV_A_ 1e100); 2324 time_update (EV_A_ 1e100);
1699 2325
1700 waittime = MAX_BLOCKTIME; 2326 waittime = MAX_BLOCKTIME;
1701 2327
1702 if (timercnt) 2328 if (timercnt)
1703 { 2329 {
1704 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 2330 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1705 if (waittime > to) waittime = to; 2331 if (waittime > to) waittime = to;
1706 } 2332 }
1707 2333
1708#if EV_PERIODIC_ENABLE 2334#if EV_PERIODIC_ENABLE
1709 if (periodiccnt) 2335 if (periodiccnt)
1710 { 2336 {
1711 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 2337 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1712 if (waittime > to) waittime = to; 2338 if (waittime > to) waittime = to;
1713 } 2339 }
1714#endif 2340#endif
1715 2341
2342 /* don't let timeouts decrease the waittime below timeout_blocktime */
1716 if (expect_false (waittime < timeout_blocktime)) 2343 if (expect_false (waittime < timeout_blocktime))
1717 waittime = timeout_blocktime; 2344 waittime = timeout_blocktime;
1718 2345
1719 sleeptime = waittime - backend_fudge; 2346 /* extra check because io_blocktime is commonly 0 */
1720
1721 if (expect_true (sleeptime > io_blocktime)) 2347 if (expect_false (io_blocktime))
1722 sleeptime = io_blocktime;
1723
1724 if (sleeptime)
1725 { 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 {
1726 ev_sleep (sleeptime); 2356 ev_sleep (sleeptime);
1727 waittime -= sleeptime; 2357 waittime -= sleeptime;
2358 }
1728 } 2359 }
1729 } 2360 }
1730 2361
2362#if EV_MINIMAL < 2
1731 ++loop_count; 2363 ++loop_count;
2364#endif
2365 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1732 backend_poll (EV_A_ waittime); 2366 backend_poll (EV_A_ waittime);
2367 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1733 2368
1734 /* update ev_rt_now, do magic */ 2369 /* update ev_rt_now, do magic */
1735 time_update (EV_A_ waittime + sleeptime); 2370 time_update (EV_A_ waittime + sleeptime);
1736 } 2371 }
1737 2372
… …
1748 2383
1749 /* queue check watchers, to be executed first */ 2384 /* queue check watchers, to be executed first */
1750 if (expect_false (checkcnt)) 2385 if (expect_false (checkcnt))
1751 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2386 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1752 2387
1753 call_pending (EV_A); 2388 EV_INVOKE_PENDING;
1754 } 2389 }
1755 while (expect_true ( 2390 while (expect_true (
1756 activecnt 2391 activecnt
1757 && !loop_done 2392 && !loop_done
1758 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2393 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1759 )); 2394 ));
1760 2395
1761 if (loop_done == EVUNLOOP_ONE) 2396 if (loop_done == EVUNLOOP_ONE)
1762 loop_done = EVUNLOOP_CANCEL; 2397 loop_done = EVUNLOOP_CANCEL;
2398
2399#if EV_MINIMAL < 2
2400 --loop_depth;
2401#endif
1763} 2402}
1764 2403
1765void 2404void
1766ev_unloop (EV_P_ int how) 2405ev_unloop (EV_P_ int how)
1767{ 2406{
1768 loop_done = how; 2407 loop_done = how;
1769} 2408}
1770 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
1771/*****************************************************************************/ 2447/*****************************************************************************/
2448/* singly-linked list management, used when the expected list length is short */
1772 2449
1773void inline_size 2450inline_size void
1774wlist_add (WL *head, WL elem) 2451wlist_add (WL *head, WL elem)
1775{ 2452{
1776 elem->next = *head; 2453 elem->next = *head;
1777 *head = elem; 2454 *head = elem;
1778} 2455}
1779 2456
1780void inline_size 2457inline_size void
1781wlist_del (WL *head, WL elem) 2458wlist_del (WL *head, WL elem)
1782{ 2459{
1783 while (*head) 2460 while (*head)
1784 { 2461 {
1785 if (*head == elem) 2462 if (expect_true (*head == elem))
1786 { 2463 {
1787 *head = elem->next; 2464 *head = elem->next;
1788 return; 2465 break;
1789 } 2466 }
1790 2467
1791 head = &(*head)->next; 2468 head = &(*head)->next;
1792 } 2469 }
1793} 2470}
1794 2471
1795void inline_speed 2472/* internal, faster, version of ev_clear_pending */
2473inline_speed void
1796clear_pending (EV_P_ W w) 2474clear_pending (EV_P_ W w)
1797{ 2475{
1798 if (w->pending) 2476 if (w->pending)
1799 { 2477 {
1800 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2478 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1801 w->pending = 0; 2479 w->pending = 0;
1802 } 2480 }
1803} 2481}
1804 2482
1805int 2483int
… …
1809 int pending = w_->pending; 2487 int pending = w_->pending;
1810 2488
1811 if (expect_true (pending)) 2489 if (expect_true (pending))
1812 { 2490 {
1813 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2491 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2492 p->w = (W)&pending_w;
1814 w_->pending = 0; 2493 w_->pending = 0;
1815 p->w = 0;
1816 return p->events; 2494 return p->events;
1817 } 2495 }
1818 else 2496 else
1819 return 0; 2497 return 0;
1820} 2498}
1821 2499
1822void inline_size 2500inline_size void
1823pri_adjust (EV_P_ W w) 2501pri_adjust (EV_P_ W w)
1824{ 2502{
1825 int pri = w->priority; 2503 int pri = ev_priority (w);
1826 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2504 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1827 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2505 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1828 w->priority = pri; 2506 ev_set_priority (w, pri);
1829} 2507}
1830 2508
1831void inline_speed 2509inline_speed void
1832ev_start (EV_P_ W w, int active) 2510ev_start (EV_P_ W w, int active)
1833{ 2511{
1834 pri_adjust (EV_A_ w); 2512 pri_adjust (EV_A_ w);
1835 w->active = active; 2513 w->active = active;
1836 ev_ref (EV_A); 2514 ev_ref (EV_A);
1837} 2515}
1838 2516
1839void inline_size 2517inline_size void
1840ev_stop (EV_P_ W w) 2518ev_stop (EV_P_ W w)
1841{ 2519{
1842 ev_unref (EV_A); 2520 ev_unref (EV_A);
1843 w->active = 0; 2521 w->active = 0;
1844} 2522}
… …
1851 int fd = w->fd; 2529 int fd = w->fd;
1852 2530
1853 if (expect_false (ev_is_active (w))) 2531 if (expect_false (ev_is_active (w)))
1854 return; 2532 return;
1855 2533
1856 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))));
2536
2537 EV_FREQUENT_CHECK;
1857 2538
1858 ev_start (EV_A_ (W)w, 1); 2539 ev_start (EV_A_ (W)w, 1);
1859 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2540 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1860 wlist_add (&anfds[fd].head, (WL)w); 2541 wlist_add (&anfds[fd].head, (WL)w);
1861 2542
1862 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2543 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1863 w->events &= ~EV_IOFDSET; 2544 w->events &= ~EV__IOFDSET;
2545
2546 EV_FREQUENT_CHECK;
1864} 2547}
1865 2548
1866void noinline 2549void noinline
1867ev_io_stop (EV_P_ ev_io *w) 2550ev_io_stop (EV_P_ ev_io *w)
1868{ 2551{
1869 clear_pending (EV_A_ (W)w); 2552 clear_pending (EV_A_ (W)w);
1870 if (expect_false (!ev_is_active (w))) 2553 if (expect_false (!ev_is_active (w)))
1871 return; 2554 return;
1872 2555
1873 assert (("ev_io_start 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));
2557
2558 EV_FREQUENT_CHECK;
1874 2559
1875 wlist_del (&anfds[w->fd].head, (WL)w); 2560 wlist_del (&anfds[w->fd].head, (WL)w);
1876 ev_stop (EV_A_ (W)w); 2561 ev_stop (EV_A_ (W)w);
1877 2562
1878 fd_change (EV_A_ w->fd, 1); 2563 fd_change (EV_A_ w->fd, 1);
2564
2565 EV_FREQUENT_CHECK;
1879} 2566}
1880 2567
1881void noinline 2568void noinline
1882ev_timer_start (EV_P_ ev_timer *w) 2569ev_timer_start (EV_P_ ev_timer *w)
1883{ 2570{
1884 if (expect_false (ev_is_active (w))) 2571 if (expect_false (ev_is_active (w)))
1885 return; 2572 return;
1886 2573
1887 ((WT)w)->at += mn_now; 2574 ev_at (w) += mn_now;
1888 2575
1889 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.));
1890 2577
2578 EV_FREQUENT_CHECK;
2579
2580 ++timercnt;
1891 ev_start (EV_A_ (W)w, ++timercnt); 2581 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1892 array_needsize (WT, timers, timermax, timercnt, EMPTY2); 2582 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1893 timers [timercnt - 1] = (WT)w; 2583 ANHE_w (timers [ev_active (w)]) = (WT)w;
1894 upheap (timers, timercnt - 1); 2584 ANHE_at_cache (timers [ev_active (w)]);
2585 upheap (timers, ev_active (w));
1895 2586
2587 EV_FREQUENT_CHECK;
2588
1896 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ 2589 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1897} 2590}
1898 2591
1899void noinline 2592void noinline
1900ev_timer_stop (EV_P_ ev_timer *w) 2593ev_timer_stop (EV_P_ ev_timer *w)
1901{ 2594{
1902 clear_pending (EV_A_ (W)w); 2595 clear_pending (EV_A_ (W)w);
1903 if (expect_false (!ev_is_active (w))) 2596 if (expect_false (!ev_is_active (w)))
1904 return; 2597 return;
1905 2598
1906 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w)); 2599 EV_FREQUENT_CHECK;
1907 2600
1908 { 2601 {
1909 int active = ((W)w)->active; 2602 int active = ev_active (w);
1910 2603
2604 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2605
2606 --timercnt;
2607
1911 if (expect_true (--active < --timercnt)) 2608 if (expect_true (active < timercnt + HEAP0))
1912 { 2609 {
1913 timers [active] = timers [timercnt]; 2610 timers [active] = timers [timercnt + HEAP0];
1914 adjustheap (timers, timercnt, active); 2611 adjustheap (timers, timercnt, active);
1915 } 2612 }
1916 } 2613 }
1917 2614
1918 ((WT)w)->at -= mn_now; 2615 ev_at (w) -= mn_now;
1919 2616
1920 ev_stop (EV_A_ (W)w); 2617 ev_stop (EV_A_ (W)w);
2618
2619 EV_FREQUENT_CHECK;
1921} 2620}
1922 2621
1923void noinline 2622void noinline
1924ev_timer_again (EV_P_ ev_timer *w) 2623ev_timer_again (EV_P_ ev_timer *w)
1925{ 2624{
2625 EV_FREQUENT_CHECK;
2626
1926 if (ev_is_active (w)) 2627 if (ev_is_active (w))
1927 { 2628 {
1928 if (w->repeat) 2629 if (w->repeat)
1929 { 2630 {
1930 ((WT)w)->at = mn_now + w->repeat; 2631 ev_at (w) = mn_now + w->repeat;
2632 ANHE_at_cache (timers [ev_active (w)]);
1931 adjustheap (timers, timercnt, ((W)w)->active - 1); 2633 adjustheap (timers, timercnt, ev_active (w));
1932 } 2634 }
1933 else 2635 else
1934 ev_timer_stop (EV_A_ w); 2636 ev_timer_stop (EV_A_ w);
1935 } 2637 }
1936 else if (w->repeat) 2638 else if (w->repeat)
1937 { 2639 {
1938 w->at = w->repeat; 2640 ev_at (w) = w->repeat;
1939 ev_timer_start (EV_A_ w); 2641 ev_timer_start (EV_A_ w);
1940 } 2642 }
2643
2644 EV_FREQUENT_CHECK;
2645}
2646
2647ev_tstamp
2648ev_timer_remaining (EV_P_ ev_timer *w)
2649{
2650 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1941} 2651}
1942 2652
1943#if EV_PERIODIC_ENABLE 2653#if EV_PERIODIC_ENABLE
1944void noinline 2654void noinline
1945ev_periodic_start (EV_P_ ev_periodic *w) 2655ev_periodic_start (EV_P_ ev_periodic *w)
1946{ 2656{
1947 if (expect_false (ev_is_active (w))) 2657 if (expect_false (ev_is_active (w)))
1948 return; 2658 return;
1949 2659
1950 if (w->reschedule_cb) 2660 if (w->reschedule_cb)
1951 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2661 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1952 else if (w->interval) 2662 else if (w->interval)
1953 { 2663 {
1954 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.));
1955 /* 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 */
1956 ((WT)w)->at = 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;
1957 } 2667 }
1958 else 2668 else
1959 ((WT)w)->at = w->offset; 2669 ev_at (w) = w->offset;
1960 2670
2671 EV_FREQUENT_CHECK;
2672
2673 ++periodiccnt;
1961 ev_start (EV_A_ (W)w, ++periodiccnt); 2674 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1962 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2); 2675 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1963 periodics [periodiccnt - 1] = (WT)w; 2676 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1964 upheap (periodics, periodiccnt - 1); 2677 ANHE_at_cache (periodics [ev_active (w)]);
2678 upheap (periodics, ev_active (w));
1965 2679
2680 EV_FREQUENT_CHECK;
2681
1966 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ 2682 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1967} 2683}
1968 2684
1969void noinline 2685void noinline
1970ev_periodic_stop (EV_P_ ev_periodic *w) 2686ev_periodic_stop (EV_P_ ev_periodic *w)
1971{ 2687{
1972 clear_pending (EV_A_ (W)w); 2688 clear_pending (EV_A_ (W)w);
1973 if (expect_false (!ev_is_active (w))) 2689 if (expect_false (!ev_is_active (w)))
1974 return; 2690 return;
1975 2691
1976 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w)); 2692 EV_FREQUENT_CHECK;
1977 2693
1978 { 2694 {
1979 int active = ((W)w)->active; 2695 int active = ev_active (w);
1980 2696
2697 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2698
2699 --periodiccnt;
2700
1981 if (expect_true (--active < --periodiccnt)) 2701 if (expect_true (active < periodiccnt + HEAP0))
1982 { 2702 {
1983 periodics [active] = periodics [periodiccnt]; 2703 periodics [active] = periodics [periodiccnt + HEAP0];
1984 adjustheap (periodics, periodiccnt, active); 2704 adjustheap (periodics, periodiccnt, active);
1985 } 2705 }
1986 } 2706 }
1987 2707
1988 ev_stop (EV_A_ (W)w); 2708 ev_stop (EV_A_ (W)w);
2709
2710 EV_FREQUENT_CHECK;
1989} 2711}
1990 2712
1991void noinline 2713void noinline
1992ev_periodic_again (EV_P_ ev_periodic *w) 2714ev_periodic_again (EV_P_ ev_periodic *w)
1993{ 2715{
… …
2002#endif 2724#endif
2003 2725
2004void noinline 2726void noinline
2005ev_signal_start (EV_P_ ev_signal *w) 2727ev_signal_start (EV_P_ ev_signal *w)
2006{ 2728{
2007#if EV_MULTIPLICITY
2008 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2009#endif
2010 if (expect_false (ev_is_active (w))) 2729 if (expect_false (ev_is_active (w)))
2011 return; 2730 return;
2012 2731
2013 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));
2014 2733
2015 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));
2016 2737
2738 signals [w->signum - 1].loop = EV_A;
2739#endif
2740
2741 EV_FREQUENT_CHECK;
2742
2743#if EV_USE_SIGNALFD
2744 if (sigfd == -2)
2017 { 2745 {
2018#ifndef _WIN32 2746 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2019 sigset_t full, prev; 2747 if (sigfd < 0 && errno == EINVAL)
2020 sigfillset (&full); 2748 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2021 sigprocmask (SIG_SETMASK, &full, &prev);
2022#endif
2023 2749
2024 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2750 if (sigfd >= 0)
2751 {
2752 fd_intern (sigfd); /* doing it twice will not hurt */
2025 2753
2026#ifndef _WIN32 2754 sigemptyset (&sigfd_set);
2027 sigprocmask (SIG_SETMASK, &prev, 0); 2755
2028#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 }
2029 } 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
2030 2772
2031 ev_start (EV_A_ (W)w, 1); 2773 ev_start (EV_A_ (W)w, 1);
2032 wlist_add (&signals [w->signum - 1].head, (WL)w); 2774 wlist_add (&signals [w->signum - 1].head, (WL)w);
2033 2775
2034 if (!((WL)w)->next) 2776 if (!((WL)w)->next)
2777# if EV_USE_SIGNALFD
2778 if (sigfd < 0) /*TODO*/
2779# endif
2035 { 2780 {
2036#if _WIN32 2781# ifdef _WIN32
2782 evpipe_init (EV_A);
2783
2037 signal (w->signum, ev_sighandler); 2784 signal (w->signum, ev_sighandler);
2038#else 2785# else
2039 struct sigaction sa; 2786 struct sigaction sa;
2787
2788 evpipe_init (EV_A);
2789
2040 sa.sa_handler = ev_sighandler; 2790 sa.sa_handler = ev_sighandler;
2041 sigfillset (&sa.sa_mask); 2791 sigfillset (&sa.sa_mask);
2042 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 */
2043 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);
2044#endif 2798#endif
2045 } 2799 }
2800
2801 EV_FREQUENT_CHECK;
2046} 2802}
2047 2803
2048void noinline 2804void noinline
2049ev_signal_stop (EV_P_ ev_signal *w) 2805ev_signal_stop (EV_P_ ev_signal *w)
2050{ 2806{
2051 clear_pending (EV_A_ (W)w); 2807 clear_pending (EV_A_ (W)w);
2052 if (expect_false (!ev_is_active (w))) 2808 if (expect_false (!ev_is_active (w)))
2053 return; 2809 return;
2054 2810
2811 EV_FREQUENT_CHECK;
2812
2055 wlist_del (&signals [w->signum - 1].head, (WL)w); 2813 wlist_del (&signals [w->signum - 1].head, (WL)w);
2056 ev_stop (EV_A_ (W)w); 2814 ev_stop (EV_A_ (W)w);
2057 2815
2058 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
2059 signal (w->signum, SIG_DFL); 2835 signal (w->signum, SIG_DFL);
2836 }
2837
2838 EV_FREQUENT_CHECK;
2060} 2839}
2061 2840
2062void 2841void
2063ev_child_start (EV_P_ ev_child *w) 2842ev_child_start (EV_P_ ev_child *w)
2064{ 2843{
2065#if EV_MULTIPLICITY 2844#if EV_MULTIPLICITY
2066 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));
2067#endif 2846#endif
2068 if (expect_false (ev_is_active (w))) 2847 if (expect_false (ev_is_active (w)))
2069 return; 2848 return;
2070 2849
2850 EV_FREQUENT_CHECK;
2851
2071 ev_start (EV_A_ (W)w, 1); 2852 ev_start (EV_A_ (W)w, 1);
2072 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2853 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2854
2855 EV_FREQUENT_CHECK;
2073} 2856}
2074 2857
2075void 2858void
2076ev_child_stop (EV_P_ ev_child *w) 2859ev_child_stop (EV_P_ ev_child *w)
2077{ 2860{
2078 clear_pending (EV_A_ (W)w); 2861 clear_pending (EV_A_ (W)w);
2079 if (expect_false (!ev_is_active (w))) 2862 if (expect_false (!ev_is_active (w)))
2080 return; 2863 return;
2081 2864
2865 EV_FREQUENT_CHECK;
2866
2082 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2867 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2083 ev_stop (EV_A_ (W)w); 2868 ev_stop (EV_A_ (W)w);
2869
2870 EV_FREQUENT_CHECK;
2084} 2871}
2085 2872
2086#if EV_STAT_ENABLE 2873#if EV_STAT_ENABLE
2087 2874
2088# ifdef _WIN32 2875# ifdef _WIN32
2089# undef lstat 2876# undef lstat
2090# define lstat(a,b) _stati64 (a,b) 2877# define lstat(a,b) _stati64 (a,b)
2091# endif 2878# endif
2092 2879
2093#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 */
2094#define MIN_STAT_INTERVAL 0.1074891 2882#define MIN_STAT_INTERVAL 0.1074891
2095 2883
2096static 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);
2097 2885
2098#if EV_USE_INOTIFY 2886#if EV_USE_INOTIFY
2099# 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)
2100 2890
2101static void noinline 2891static void noinline
2102infy_add (EV_P_ ev_stat *w) 2892infy_add (EV_P_ ev_stat *w)
2103{ 2893{
2104 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);
2105 2895
2106 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 */
2107 { 2916 }
2108 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;
2109 2921
2110 /* monitor some parent directory for speedup hints */ 2922 /* if path is not there, monitor some parent directory for speedup hints */
2923 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2924 /* but an efficiency issue only */
2111 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2925 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2112 { 2926 {
2113 char path [4096]; 2927 char path [4096];
2114 strcpy (path, w->path); 2928 strcpy (path, w->path);
2115 2929
… …
2118 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2932 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2119 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2933 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2120 2934
2121 char *pend = strrchr (path, '/'); 2935 char *pend = strrchr (path, '/');
2122 2936
2123 if (!pend) 2937 if (!pend || pend == path)
2124 break; /* whoops, no '/', complain to your admin */ 2938 break;
2125 2939
2126 *pend = 0; 2940 *pend = 0;
2127 w->wd = inotify_add_watch (fs_fd, path, mask); 2941 w->wd = inotify_add_watch (fs_fd, path, mask);
2128 } 2942 }
2129 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2943 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2130 } 2944 }
2131 } 2945 }
2132 else
2133 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2134 2946
2135 if (w->wd >= 0) 2947 if (w->wd >= 0)
2136 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);
2137} 2954}
2138 2955
2139static void noinline 2956static void noinline
2140infy_del (EV_P_ ev_stat *w) 2957infy_del (EV_P_ ev_stat *w)
2141{ 2958{
… …
2155 2972
2156static void noinline 2973static void noinline
2157infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2974infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2158{ 2975{
2159 if (slot < 0) 2976 if (slot < 0)
2160 /* overflow, need to check for all hahs slots */ 2977 /* overflow, need to check for all hash slots */
2161 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2978 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2162 infy_wd (EV_A_ slot, wd, ev); 2979 infy_wd (EV_A_ slot, wd, ev);
2163 else 2980 else
2164 { 2981 {
2165 WL w_; 2982 WL w_;
… …
2171 2988
2172 if (w->wd == wd || wd == -1) 2989 if (w->wd == wd || wd == -1)
2173 { 2990 {
2174 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2991 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2175 { 2992 {
2993 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2176 w->wd = -1; 2994 w->wd = -1;
2177 infy_add (EV_A_ w); /* re-add, no matter what */ 2995 infy_add (EV_A_ w); /* re-add, no matter what */
2178 } 2996 }
2179 2997
2180 stat_timer_cb (EV_A_ &w->timer, 0); 2998 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2185 3003
2186static void 3004static void
2187infy_cb (EV_P_ ev_io *w, int revents) 3005infy_cb (EV_P_ ev_io *w, int revents)
2188{ 3006{
2189 char buf [EV_INOTIFY_BUFSIZE]; 3007 char buf [EV_INOTIFY_BUFSIZE];
2190 struct inotify_event *ev = (struct inotify_event *)buf;
2191 int ofs; 3008 int ofs;
2192 int len = read (fs_fd, buf, sizeof (buf)); 3009 int len = read (fs_fd, buf, sizeof (buf));
2193 3010
2194 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);
2195 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 }
2196} 3017}
2197 3018
2198void 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
2199infy_init (EV_P) 3075infy_init (EV_P)
2200{ 3076{
2201 if (fs_fd != -2) 3077 if (fs_fd != -2)
2202 return; 3078 return;
2203 3079
3080 fs_fd = -1;
3081
3082 ev_check_2625 (EV_A);
3083
2204 fs_fd = inotify_init (); 3084 fs_fd = infy_newfd ();
2205 3085
2206 if (fs_fd >= 0) 3086 if (fs_fd >= 0)
2207 { 3087 {
3088 fd_intern (fs_fd);
2208 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3089 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2209 ev_set_priority (&fs_w, EV_MAXPRI); 3090 ev_set_priority (&fs_w, EV_MAXPRI);
2210 ev_io_start (EV_A_ &fs_w); 3091 ev_io_start (EV_A_ &fs_w);
3092 ev_unref (EV_A);
2211 } 3093 }
2212} 3094}
2213 3095
2214void inline_size 3096inline_size void
2215infy_fork (EV_P) 3097infy_fork (EV_P)
2216{ 3098{
2217 int slot; 3099 int slot;
2218 3100
2219 if (fs_fd < 0) 3101 if (fs_fd < 0)
2220 return; 3102 return;
2221 3103
3104 ev_ref (EV_A);
3105 ev_io_stop (EV_A_ &fs_w);
2222 close (fs_fd); 3106 close (fs_fd);
2223 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 }
2224 3116
2225 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3117 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2226 { 3118 {
2227 WL w_ = fs_hash [slot].head; 3119 WL w_ = fs_hash [slot].head;
2228 fs_hash [slot].head = 0; 3120 fs_hash [slot].head = 0;
… …
2235 w->wd = -1; 3127 w->wd = -1;
2236 3128
2237 if (fs_fd >= 0) 3129 if (fs_fd >= 0)
2238 infy_add (EV_A_ w); /* re-add, no matter what */ 3130 infy_add (EV_A_ w); /* re-add, no matter what */
2239 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);
2240 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 }
2241 } 3138 }
2242
2243 } 3139 }
2244} 3140}
2245 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)
2246#endif 3148#endif
2247 3149
2248void 3150void
2249ev_stat_stat (EV_P_ ev_stat *w) 3151ev_stat_stat (EV_P_ ev_stat *w)
2250{ 3152{
… …
2257static void noinline 3159static void noinline
2258stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3160stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2259{ 3161{
2260 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3162 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2261 3163
2262 /* we copy this here each the time so that */ 3164 ev_statdata prev = w->attr;
2263 /* prev has the old value when the callback gets invoked */
2264 w->prev = w->attr;
2265 ev_stat_stat (EV_A_ w); 3165 ev_stat_stat (EV_A_ w);
2266 3166
2267 /* 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 */
2268 if ( 3168 if (
2269 w->prev.st_dev != w->attr.st_dev 3169 prev.st_dev != w->attr.st_dev
2270 || w->prev.st_ino != w->attr.st_ino 3170 || prev.st_ino != w->attr.st_ino
2271 || w->prev.st_mode != w->attr.st_mode 3171 || prev.st_mode != w->attr.st_mode
2272 || w->prev.st_nlink != w->attr.st_nlink 3172 || prev.st_nlink != w->attr.st_nlink
2273 || w->prev.st_uid != w->attr.st_uid 3173 || prev.st_uid != w->attr.st_uid
2274 || w->prev.st_gid != w->attr.st_gid 3174 || prev.st_gid != w->attr.st_gid
2275 || w->prev.st_rdev != w->attr.st_rdev 3175 || prev.st_rdev != w->attr.st_rdev
2276 || w->prev.st_size != w->attr.st_size 3176 || prev.st_size != w->attr.st_size
2277 || w->prev.st_atime != w->attr.st_atime 3177 || prev.st_atime != w->attr.st_atime
2278 || w->prev.st_mtime != w->attr.st_mtime 3178 || prev.st_mtime != w->attr.st_mtime
2279 || w->prev.st_ctime != w->attr.st_ctime 3179 || prev.st_ctime != w->attr.st_ctime
2280 ) { 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
2281 #if EV_USE_INOTIFY 3186 #if EV_USE_INOTIFY
3187 if (fs_fd >= 0)
3188 {
2282 infy_del (EV_A_ w); 3189 infy_del (EV_A_ w);
2283 infy_add (EV_A_ w); 3190 infy_add (EV_A_ w);
2284 ev_stat_stat (EV_A_ w); /* avoid race... */ 3191 ev_stat_stat (EV_A_ w); /* avoid race... */
3192 }
2285 #endif 3193 #endif
2286 3194
2287 ev_feed_event (EV_A_ w, EV_STAT); 3195 ev_feed_event (EV_A_ w, EV_STAT);
2288 } 3196 }
2289} 3197}
… …
2292ev_stat_start (EV_P_ ev_stat *w) 3200ev_stat_start (EV_P_ ev_stat *w)
2293{ 3201{
2294 if (expect_false (ev_is_active (w))) 3202 if (expect_false (ev_is_active (w)))
2295 return; 3203 return;
2296 3204
2297 /* since we use memcmp, we need to clear any padding data etc. */
2298 memset (&w->prev, 0, sizeof (ev_statdata));
2299 memset (&w->attr, 0, sizeof (ev_statdata));
2300
2301 ev_stat_stat (EV_A_ w); 3205 ev_stat_stat (EV_A_ w);
2302 3206
3207 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2303 if (w->interval < MIN_STAT_INTERVAL) 3208 w->interval = MIN_STAT_INTERVAL;
2304 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2305 3209
2306 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);
2307 ev_set_priority (&w->timer, ev_priority (w)); 3211 ev_set_priority (&w->timer, ev_priority (w));
2308 3212
2309#if EV_USE_INOTIFY 3213#if EV_USE_INOTIFY
2310 infy_init (EV_A); 3214 infy_init (EV_A);
2311 3215
2312 if (fs_fd >= 0) 3216 if (fs_fd >= 0)
2313 infy_add (EV_A_ w); 3217 infy_add (EV_A_ w);
2314 else 3218 else
2315#endif 3219#endif
3220 {
2316 ev_timer_start (EV_A_ &w->timer); 3221 ev_timer_again (EV_A_ &w->timer);
3222 ev_unref (EV_A);
3223 }
2317 3224
2318 ev_start (EV_A_ (W)w, 1); 3225 ev_start (EV_A_ (W)w, 1);
3226
3227 EV_FREQUENT_CHECK;
2319} 3228}
2320 3229
2321void 3230void
2322ev_stat_stop (EV_P_ ev_stat *w) 3231ev_stat_stop (EV_P_ ev_stat *w)
2323{ 3232{
2324 clear_pending (EV_A_ (W)w); 3233 clear_pending (EV_A_ (W)w);
2325 if (expect_false (!ev_is_active (w))) 3234 if (expect_false (!ev_is_active (w)))
2326 return; 3235 return;
2327 3236
3237 EV_FREQUENT_CHECK;
3238
2328#if EV_USE_INOTIFY 3239#if EV_USE_INOTIFY
2329 infy_del (EV_A_ w); 3240 infy_del (EV_A_ w);
2330#endif 3241#endif
3242
3243 if (ev_is_active (&w->timer))
3244 {
3245 ev_ref (EV_A);
2331 ev_timer_stop (EV_A_ &w->timer); 3246 ev_timer_stop (EV_A_ &w->timer);
3247 }
2332 3248
2333 ev_stop (EV_A_ (W)w); 3249 ev_stop (EV_A_ (W)w);
3250
3251 EV_FREQUENT_CHECK;
2334} 3252}
2335#endif 3253#endif
2336 3254
2337#if EV_IDLE_ENABLE 3255#if EV_IDLE_ENABLE
2338void 3256void
… …
2340{ 3258{
2341 if (expect_false (ev_is_active (w))) 3259 if (expect_false (ev_is_active (w)))
2342 return; 3260 return;
2343 3261
2344 pri_adjust (EV_A_ (W)w); 3262 pri_adjust (EV_A_ (W)w);
3263
3264 EV_FREQUENT_CHECK;
2345 3265
2346 { 3266 {
2347 int active = ++idlecnt [ABSPRI (w)]; 3267 int active = ++idlecnt [ABSPRI (w)];
2348 3268
2349 ++idleall; 3269 ++idleall;
2350 ev_start (EV_A_ (W)w, active); 3270 ev_start (EV_A_ (W)w, active);
2351 3271
2352 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 3272 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2353 idles [ABSPRI (w)][active - 1] = w; 3273 idles [ABSPRI (w)][active - 1] = w;
2354 } 3274 }
3275
3276 EV_FREQUENT_CHECK;
2355} 3277}
2356 3278
2357void 3279void
2358ev_idle_stop (EV_P_ ev_idle *w) 3280ev_idle_stop (EV_P_ ev_idle *w)
2359{ 3281{
2360 clear_pending (EV_A_ (W)w); 3282 clear_pending (EV_A_ (W)w);
2361 if (expect_false (!ev_is_active (w))) 3283 if (expect_false (!ev_is_active (w)))
2362 return; 3284 return;
2363 3285
3286 EV_FREQUENT_CHECK;
3287
2364 { 3288 {
2365 int active = ((W)w)->active; 3289 int active = ev_active (w);
2366 3290
2367 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3291 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2368 ((W)idles [ABSPRI (w)][active - 1])->active = active; 3292 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2369 3293
2370 ev_stop (EV_A_ (W)w); 3294 ev_stop (EV_A_ (W)w);
2371 --idleall; 3295 --idleall;
2372 } 3296 }
3297
3298 EV_FREQUENT_CHECK;
2373} 3299}
2374#endif 3300#endif
2375 3301
2376void 3302void
2377ev_prepare_start (EV_P_ ev_prepare *w) 3303ev_prepare_start (EV_P_ ev_prepare *w)
2378{ 3304{
2379 if (expect_false (ev_is_active (w))) 3305 if (expect_false (ev_is_active (w)))
2380 return; 3306 return;
3307
3308 EV_FREQUENT_CHECK;
2381 3309
2382 ev_start (EV_A_ (W)w, ++preparecnt); 3310 ev_start (EV_A_ (W)w, ++preparecnt);
2383 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3311 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2384 prepares [preparecnt - 1] = w; 3312 prepares [preparecnt - 1] = w;
3313
3314 EV_FREQUENT_CHECK;
2385} 3315}
2386 3316
2387void 3317void
2388ev_prepare_stop (EV_P_ ev_prepare *w) 3318ev_prepare_stop (EV_P_ ev_prepare *w)
2389{ 3319{
2390 clear_pending (EV_A_ (W)w); 3320 clear_pending (EV_A_ (W)w);
2391 if (expect_false (!ev_is_active (w))) 3321 if (expect_false (!ev_is_active (w)))
2392 return; 3322 return;
2393 3323
3324 EV_FREQUENT_CHECK;
3325
2394 { 3326 {
2395 int active = ((W)w)->active; 3327 int active = ev_active (w);
3328
2396 prepares [active - 1] = prepares [--preparecnt]; 3329 prepares [active - 1] = prepares [--preparecnt];
2397 ((W)prepares [active - 1])->active = active; 3330 ev_active (prepares [active - 1]) = active;
2398 } 3331 }
2399 3332
2400 ev_stop (EV_A_ (W)w); 3333 ev_stop (EV_A_ (W)w);
3334
3335 EV_FREQUENT_CHECK;
2401} 3336}
2402 3337
2403void 3338void
2404ev_check_start (EV_P_ ev_check *w) 3339ev_check_start (EV_P_ ev_check *w)
2405{ 3340{
2406 if (expect_false (ev_is_active (w))) 3341 if (expect_false (ev_is_active (w)))
2407 return; 3342 return;
3343
3344 EV_FREQUENT_CHECK;
2408 3345
2409 ev_start (EV_A_ (W)w, ++checkcnt); 3346 ev_start (EV_A_ (W)w, ++checkcnt);
2410 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3347 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2411 checks [checkcnt - 1] = w; 3348 checks [checkcnt - 1] = w;
3349
3350 EV_FREQUENT_CHECK;
2412} 3351}
2413 3352
2414void 3353void
2415ev_check_stop (EV_P_ ev_check *w) 3354ev_check_stop (EV_P_ ev_check *w)
2416{ 3355{
2417 clear_pending (EV_A_ (W)w); 3356 clear_pending (EV_A_ (W)w);
2418 if (expect_false (!ev_is_active (w))) 3357 if (expect_false (!ev_is_active (w)))
2419 return; 3358 return;
2420 3359
3360 EV_FREQUENT_CHECK;
3361
2421 { 3362 {
2422 int active = ((W)w)->active; 3363 int active = ev_active (w);
3364
2423 checks [active - 1] = checks [--checkcnt]; 3365 checks [active - 1] = checks [--checkcnt];
2424 ((W)checks [active - 1])->active = active; 3366 ev_active (checks [active - 1]) = active;
2425 } 3367 }
2426 3368
2427 ev_stop (EV_A_ (W)w); 3369 ev_stop (EV_A_ (W)w);
3370
3371 EV_FREQUENT_CHECK;
2428} 3372}
2429 3373
2430#if EV_EMBED_ENABLE 3374#if EV_EMBED_ENABLE
2431void noinline 3375void noinline
2432ev_embed_sweep (EV_P_ ev_embed *w) 3376ev_embed_sweep (EV_P_ ev_embed *w)
… …
2449embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3393embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2450{ 3394{
2451 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3395 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2452 3396
2453 { 3397 {
2454 struct ev_loop *loop = w->other; 3398 EV_P = w->other;
2455 3399
2456 while (fdchangecnt) 3400 while (fdchangecnt)
2457 { 3401 {
2458 fd_reify (EV_A); 3402 fd_reify (EV_A);
2459 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3403 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2460 } 3404 }
2461 } 3405 }
2462} 3406}
2463 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
2464#if 0 3425#if 0
2465static void 3426static void
2466embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3427embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2467{ 3428{
2468 ev_idle_stop (EV_A_ idle); 3429 ev_idle_stop (EV_A_ idle);
… …
2474{ 3435{
2475 if (expect_false (ev_is_active (w))) 3436 if (expect_false (ev_is_active (w)))
2476 return; 3437 return;
2477 3438
2478 { 3439 {
2479 struct ev_loop *loop = w->other; 3440 EV_P = w->other;
2480 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 ()));
2481 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);
2482 } 3443 }
3444
3445 EV_FREQUENT_CHECK;
2483 3446
2484 ev_set_priority (&w->io, ev_priority (w)); 3447 ev_set_priority (&w->io, ev_priority (w));
2485 ev_io_start (EV_A_ &w->io); 3448 ev_io_start (EV_A_ &w->io);
2486 3449
2487 ev_prepare_init (&w->prepare, embed_prepare_cb); 3450 ev_prepare_init (&w->prepare, embed_prepare_cb);
2488 ev_set_priority (&w->prepare, EV_MINPRI); 3451 ev_set_priority (&w->prepare, EV_MINPRI);
2489 ev_prepare_start (EV_A_ &w->prepare); 3452 ev_prepare_start (EV_A_ &w->prepare);
2490 3453
3454 ev_fork_init (&w->fork, embed_fork_cb);
3455 ev_fork_start (EV_A_ &w->fork);
3456
2491 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3457 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2492 3458
2493 ev_start (EV_A_ (W)w, 1); 3459 ev_start (EV_A_ (W)w, 1);
3460
3461 EV_FREQUENT_CHECK;
2494} 3462}
2495 3463
2496void 3464void
2497ev_embed_stop (EV_P_ ev_embed *w) 3465ev_embed_stop (EV_P_ ev_embed *w)
2498{ 3466{
2499 clear_pending (EV_A_ (W)w); 3467 clear_pending (EV_A_ (W)w);
2500 if (expect_false (!ev_is_active (w))) 3468 if (expect_false (!ev_is_active (w)))
2501 return; 3469 return;
2502 3470
3471 EV_FREQUENT_CHECK;
3472
2503 ev_io_stop (EV_A_ &w->io); 3473 ev_io_stop (EV_A_ &w->io);
2504 ev_prepare_stop (EV_A_ &w->prepare); 3474 ev_prepare_stop (EV_A_ &w->prepare);
3475 ev_fork_stop (EV_A_ &w->fork);
2505 3476
2506 ev_stop (EV_A_ (W)w); 3477 ev_stop (EV_A_ (W)w);
3478
3479 EV_FREQUENT_CHECK;
2507} 3480}
2508#endif 3481#endif
2509 3482
2510#if EV_FORK_ENABLE 3483#if EV_FORK_ENABLE
2511void 3484void
2512ev_fork_start (EV_P_ ev_fork *w) 3485ev_fork_start (EV_P_ ev_fork *w)
2513{ 3486{
2514 if (expect_false (ev_is_active (w))) 3487 if (expect_false (ev_is_active (w)))
2515 return; 3488 return;
3489
3490 EV_FREQUENT_CHECK;
2516 3491
2517 ev_start (EV_A_ (W)w, ++forkcnt); 3492 ev_start (EV_A_ (W)w, ++forkcnt);
2518 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3493 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2519 forks [forkcnt - 1] = w; 3494 forks [forkcnt - 1] = w;
3495
3496 EV_FREQUENT_CHECK;
2520} 3497}
2521 3498
2522void 3499void
2523ev_fork_stop (EV_P_ ev_fork *w) 3500ev_fork_stop (EV_P_ ev_fork *w)
2524{ 3501{
2525 clear_pending (EV_A_ (W)w); 3502 clear_pending (EV_A_ (W)w);
2526 if (expect_false (!ev_is_active (w))) 3503 if (expect_false (!ev_is_active (w)))
2527 return; 3504 return;
2528 3505
3506 EV_FREQUENT_CHECK;
3507
2529 { 3508 {
2530 int active = ((W)w)->active; 3509 int active = ev_active (w);
3510
2531 forks [active - 1] = forks [--forkcnt]; 3511 forks [active - 1] = forks [--forkcnt];
2532 ((W)forks [active - 1])->active = active; 3512 ev_active (forks [active - 1]) = active;
2533 } 3513 }
2534 3514
2535 ev_stop (EV_A_ (W)w); 3515 ev_stop (EV_A_ (W)w);
3516
3517 EV_FREQUENT_CHECK;
2536} 3518}
2537#endif 3519#endif
2538 3520
2539#if EV_ASYNC_ENABLE 3521#if EV_ASYNC_ENABLE
2540void 3522void
… …
2542{ 3524{
2543 if (expect_false (ev_is_active (w))) 3525 if (expect_false (ev_is_active (w)))
2544 return; 3526 return;
2545 3527
2546 evpipe_init (EV_A); 3528 evpipe_init (EV_A);
3529
3530 EV_FREQUENT_CHECK;
2547 3531
2548 ev_start (EV_A_ (W)w, ++asynccnt); 3532 ev_start (EV_A_ (W)w, ++asynccnt);
2549 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 3533 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2550 asyncs [asynccnt - 1] = w; 3534 asyncs [asynccnt - 1] = w;
3535
3536 EV_FREQUENT_CHECK;
2551} 3537}
2552 3538
2553void 3539void
2554ev_async_stop (EV_P_ ev_async *w) 3540ev_async_stop (EV_P_ ev_async *w)
2555{ 3541{
2556 clear_pending (EV_A_ (W)w); 3542 clear_pending (EV_A_ (W)w);
2557 if (expect_false (!ev_is_active (w))) 3543 if (expect_false (!ev_is_active (w)))
2558 return; 3544 return;
2559 3545
3546 EV_FREQUENT_CHECK;
3547
2560 { 3548 {
2561 int active = ((W)w)->active; 3549 int active = ev_active (w);
3550
2562 asyncs [active - 1] = asyncs [--asynccnt]; 3551 asyncs [active - 1] = asyncs [--asynccnt];
2563 ((W)asyncs [active - 1])->active = active; 3552 ev_active (asyncs [active - 1]) = active;
2564 } 3553 }
2565 3554
2566 ev_stop (EV_A_ (W)w); 3555 ev_stop (EV_A_ (W)w);
3556
3557 EV_FREQUENT_CHECK;
2567} 3558}
2568 3559
2569void 3560void
2570ev_async_send (EV_P_ ev_async *w) 3561ev_async_send (EV_P_ ev_async *w)
2571{ 3562{
2572 w->sent = 1; 3563 w->sent = 1;
2573 evpipe_write (EV_A_ &gotasync); 3564 evpipe_write (EV_A_ &async_pending);
2574} 3565}
2575#endif 3566#endif
2576 3567
2577/*****************************************************************************/ 3568/*****************************************************************************/
2578 3569
… …
2588once_cb (EV_P_ struct ev_once *once, int revents) 3579once_cb (EV_P_ struct ev_once *once, int revents)
2589{ 3580{
2590 void (*cb)(int revents, void *arg) = once->cb; 3581 void (*cb)(int revents, void *arg) = once->cb;
2591 void *arg = once->arg; 3582 void *arg = once->arg;
2592 3583
2593 ev_io_stop (EV_A_ &once->io); 3584 ev_io_stop (EV_A_ &once->io);
2594 ev_timer_stop (EV_A_ &once->to); 3585 ev_timer_stop (EV_A_ &once->to);
2595 ev_free (once); 3586 ev_free (once);
2596 3587
2597 cb (revents, arg); 3588 cb (revents, arg);
2598} 3589}
2599 3590
2600static void 3591static void
2601once_cb_io (EV_P_ ev_io *w, int revents) 3592once_cb_io (EV_P_ ev_io *w, int revents)
2602{ 3593{
2603 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));
2604} 3597}
2605 3598
2606static void 3599static void
2607once_cb_to (EV_P_ ev_timer *w, int revents) 3600once_cb_to (EV_P_ ev_timer *w, int revents)
2608{ 3601{
2609 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));
2610} 3605}
2611 3606
2612void 3607void
2613ev_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)
2614{ 3609{
… …
2636 ev_timer_set (&once->to, timeout, 0.); 3631 ev_timer_set (&once->to, timeout, 0.);
2637 ev_timer_start (EV_A_ &once->to); 3632 ev_timer_start (EV_A_ &once->to);
2638 } 3633 }
2639} 3634}
2640 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
2641#if EV_MULTIPLICITY 3744#if EV_MULTIPLICITY
2642 #include "ev_wrap.h" 3745 #include "ev_wrap.h"
2643#endif 3746#endif
2644 3747
2645#ifdef __cplusplus 3748#ifdef __cplusplus

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines