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Comparing libev/ev.c (file contents):
Revision 1.242 by root, Fri May 9 14:07:19 2008 UTC vs.
Revision 1.332 by root, Tue Mar 9 08:58:17 2010 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
47# include EV_CONFIG_H 47# include EV_CONFIG_H
48# else 48# else
49# include "config.h" 49# include "config.h"
50# endif 50# endif
51 51
52# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME
56# define EV_USE_REALTIME 0
57# endif
58# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1
60# endif
61# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL)
63# define EV_USE_CLOCK_SYSCALL 0
64# endif
65
52# if HAVE_CLOCK_GETTIME 66# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 67# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 68# define EV_USE_MONOTONIC 1
55# endif 69# endif
56# ifndef EV_USE_REALTIME 70# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 71# define EV_USE_REALTIME 0
58# endif 72# endif
59# else 73# else
60# ifndef EV_USE_MONOTONIC 74# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 75# define EV_USE_MONOTONIC 0
62# endif 76# endif
… …
96# define EV_USE_EPOLL 0 110# define EV_USE_EPOLL 0
97# endif 111# endif
98# endif 112# endif
99 113
100# ifndef EV_USE_KQUEUE 114# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
102# define EV_USE_KQUEUE 1 116# define EV_USE_KQUEUE 1
103# else 117# else
104# define EV_USE_KQUEUE 0 118# define EV_USE_KQUEUE 0
105# endif 119# endif
106# endif 120# endif
… …
119# else 133# else
120# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY 0
121# endif 135# endif
122# endif 136# endif
123 137
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1
141# else
142# define EV_USE_SIGNALFD 0
143# endif
144# endif
145
124# ifndef EV_USE_EVENTFD 146# ifndef EV_USE_EVENTFD
125# if HAVE_EVENTFD 147# if HAVE_EVENTFD
126# define EV_USE_EVENTFD 1 148# define EV_USE_EVENTFD 1
127# else 149# else
128# define EV_USE_EVENTFD 0 150# define EV_USE_EVENTFD 0
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;
… …
328typedef ev_watcher_time *WT; 499typedef ev_watcher_time *WT;
329 500
330#define ev_active(w) ((W)(w))->active 501#define ev_active(w) ((W)(w))->active
331#define ev_at(w) ((WT)(w))->at 502#define ev_at(w) ((WT)(w))->at
332 503
333#if EV_USE_MONOTONIC 504#if EV_USE_REALTIME
334/* 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 */
335/* 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
336static 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)
337#endif 522#endif
338 523
339#ifdef _WIN32 524#ifdef _WIN32
340# include "ev_win32.c" 525# include "ev_win32.c"
341#endif 526#endif
342 527
343/*****************************************************************************/ 528/*****************************************************************************/
344 529
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
345static void (*syserr_cb)(const char *msg); 538static void (*syserr_cb)(const char *msg);
346 539
347void 540void
348ev_set_syserr_cb (void (*cb)(const char *msg)) 541ev_set_syserr_cb (void (*cb)(const char *msg))
349{ 542{
350 syserr_cb = cb; 543 syserr_cb = cb;
351} 544}
352 545
353static void noinline 546static void noinline
354syserr (const char *msg) 547ev_syserr (const char *msg)
355{ 548{
356 if (!msg) 549 if (!msg)
357 msg = "(libev) system error"; 550 msg = "(libev) system error";
358 551
359 if (syserr_cb) 552 if (syserr_cb)
360 syserr_cb (msg); 553 syserr_cb (msg);
361 else 554 else
362 { 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
363 perror (msg); 564 perror (msg);
565#endif
364 abort (); 566 abort ();
365 } 567 }
366} 568}
367 569
368static void * 570static void *
… …
370{ 572{
371 /* some systems, notably openbsd and darwin, fail to properly 573 /* some systems, notably openbsd and darwin, fail to properly
372 * implement realloc (x, 0) (as required by both ansi c-98 and 574 * implement realloc (x, 0) (as required by both ansi c-98 and
373 * the single unix specification, so work around them here. 575 * the single unix specification, so work around them here.
374 */ 576 */
375
376 if (size) 577 if (size)
377 return realloc (ptr, size); 578 return realloc (ptr, size);
378 579
379 free (ptr); 580 free (ptr);
380 return 0; 581 return 0;
… …
393{ 594{
394 ptr = alloc (ptr, size); 595 ptr = alloc (ptr, size);
395 596
396 if (!ptr && size) 597 if (!ptr && size)
397 { 598 {
599#if EV_AVOID_STDIO
600 ev_printerr ("libev: memory allocation failed, aborting.\n");
601#else
398 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 602 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
603#endif
399 abort (); 604 abort ();
400 } 605 }
401 606
402 return ptr; 607 return ptr;
403} 608}
… …
405#define ev_malloc(size) ev_realloc (0, (size)) 610#define ev_malloc(size) ev_realloc (0, (size))
406#define ev_free(ptr) ev_realloc ((ptr), 0) 611#define ev_free(ptr) ev_realloc ((ptr), 0)
407 612
408/*****************************************************************************/ 613/*****************************************************************************/
409 614
615/* set in reify when reification needed */
616#define EV_ANFD_REIFY 1
617
618/* file descriptor info structure */
410typedef struct 619typedef struct
411{ 620{
412 WL head; 621 WL head;
413 unsigned char events; 622 unsigned char events; /* the events watched for */
623 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
624 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
414 unsigned char reify; 625 unsigned char unused;
626#if EV_USE_EPOLL
627 unsigned int egen; /* generation counter to counter epoll bugs */
628#endif
415#if EV_SELECT_IS_WINSOCKET 629#if EV_SELECT_IS_WINSOCKET
416 SOCKET handle; 630 SOCKET handle;
417#endif 631#endif
418} ANFD; 632} ANFD;
419 633
634/* stores the pending event set for a given watcher */
420typedef struct 635typedef struct
421{ 636{
422 W w; 637 W w;
423 int events; 638 int events; /* the pending event set for the given watcher */
424} ANPENDING; 639} ANPENDING;
425 640
426#if EV_USE_INOTIFY 641#if EV_USE_INOTIFY
427/* hash table entry per inotify-id */ 642/* hash table entry per inotify-id */
428typedef struct 643typedef struct
… …
430 WL head; 645 WL head;
431} ANFS; 646} ANFS;
432#endif 647#endif
433 648
434/* Heap Entry */ 649/* Heap Entry */
435#define EV_HEAP_CACHE_AT 0
436#if EV_HEAP_CACHE_AT 650#if EV_HEAP_CACHE_AT
651 /* a heap element */
437 typedef struct { 652 typedef struct {
653 ev_tstamp at;
438 WT w; 654 WT w;
439 ev_tstamp at;
440 } ANHE; 655 } ANHE;
441 656
442 #define ANHE_w(he) (he).w /* access watcher, read-write */ 657 #define ANHE_w(he) (he).w /* access watcher, read-write */
443 #define ANHE_at(he) (he).at /* access cached at, read-only */ 658 #define ANHE_at(he) (he).at /* access cached at, read-only */
444 #define ANHE_at_set(he) (he).at = (he).w->at /* update at from watcher */ 659 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
445#else 660#else
661 /* a heap element */
446 typedef WT ANHE; 662 typedef WT ANHE;
447 663
448 #define ANHE_w(he) (he) 664 #define ANHE_w(he) (he)
449 #define ANHE_at(he) (he)->at 665 #define ANHE_at(he) (he)->at
450 #define ANHE_at_set(he) 666 #define ANHE_at_cache(he)
451#endif 667#endif
452 668
453#if EV_MULTIPLICITY 669#if EV_MULTIPLICITY
454 670
455 struct ev_loop 671 struct ev_loop
… …
474 690
475 static int ev_default_loop_ptr; 691 static int ev_default_loop_ptr;
476 692
477#endif 693#endif
478 694
695#if EV_MINIMAL < 2
696# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
697# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
698# define EV_INVOKE_PENDING invoke_cb (EV_A)
699#else
700# define EV_RELEASE_CB (void)0
701# define EV_ACQUIRE_CB (void)0
702# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
703#endif
704
705#define EVUNLOOP_RECURSE 0x80
706
479/*****************************************************************************/ 707/*****************************************************************************/
480 708
709#ifndef EV_HAVE_EV_TIME
481ev_tstamp 710ev_tstamp
482ev_time (void) 711ev_time (void)
483{ 712{
484#if EV_USE_REALTIME 713#if EV_USE_REALTIME
714 if (expect_true (have_realtime))
715 {
485 struct timespec ts; 716 struct timespec ts;
486 clock_gettime (CLOCK_REALTIME, &ts); 717 clock_gettime (CLOCK_REALTIME, &ts);
487 return ts.tv_sec + ts.tv_nsec * 1e-9; 718 return ts.tv_sec + ts.tv_nsec * 1e-9;
488#else 719 }
720#endif
721
489 struct timeval tv; 722 struct timeval tv;
490 gettimeofday (&tv, 0); 723 gettimeofday (&tv, 0);
491 return tv.tv_sec + tv.tv_usec * 1e-6; 724 return tv.tv_sec + tv.tv_usec * 1e-6;
492#endif
493} 725}
726#endif
494 727
495ev_tstamp inline_size 728inline_size ev_tstamp
496get_clock (void) 729get_clock (void)
497{ 730{
498#if EV_USE_MONOTONIC 731#if EV_USE_MONOTONIC
499 if (expect_true (have_monotonic)) 732 if (expect_true (have_monotonic))
500 { 733 {
… …
533 struct timeval tv; 766 struct timeval tv;
534 767
535 tv.tv_sec = (time_t)delay; 768 tv.tv_sec = (time_t)delay;
536 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 769 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
537 770
771 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
772 /* something not guaranteed by newer posix versions, but guaranteed */
773 /* by older ones */
538 select (0, 0, 0, 0, &tv); 774 select (0, 0, 0, 0, &tv);
539#endif 775#endif
540 } 776 }
541} 777}
542 778
543/*****************************************************************************/ 779/*****************************************************************************/
544 780
545#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 781#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
546 782
547int inline_size 783/* find a suitable new size for the given array, */
784/* hopefully by rounding to a ncie-to-malloc size */
785inline_size int
548array_nextsize (int elem, int cur, int cnt) 786array_nextsize (int elem, int cur, int cnt)
549{ 787{
550 int ncur = cur + 1; 788 int ncur = cur + 1;
551 789
552 do 790 do
… …
569array_realloc (int elem, void *base, int *cur, int cnt) 807array_realloc (int elem, void *base, int *cur, int cnt)
570{ 808{
571 *cur = array_nextsize (elem, *cur, cnt); 809 *cur = array_nextsize (elem, *cur, cnt);
572 return ev_realloc (base, elem * *cur); 810 return ev_realloc (base, elem * *cur);
573} 811}
812
813#define array_init_zero(base,count) \
814 memset ((void *)(base), 0, sizeof (*(base)) * (count))
574 815
575#define array_needsize(type,base,cur,cnt,init) \ 816#define array_needsize(type,base,cur,cnt,init) \
576 if (expect_false ((cnt) > (cur))) \ 817 if (expect_false ((cnt) > (cur))) \
577 { \ 818 { \
578 int ocur_ = (cur); \ 819 int ocur_ = (cur); \
… …
590 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 831 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
591 } 832 }
592#endif 833#endif
593 834
594#define array_free(stem, idx) \ 835#define array_free(stem, idx) \
595 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 836 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
596 837
597/*****************************************************************************/ 838/*****************************************************************************/
839
840/* dummy callback for pending events */
841static void noinline
842pendingcb (EV_P_ ev_prepare *w, int revents)
843{
844}
598 845
599void noinline 846void noinline
600ev_feed_event (EV_P_ void *w, int revents) 847ev_feed_event (EV_P_ void *w, int revents)
601{ 848{
602 W w_ = (W)w; 849 W w_ = (W)w;
… …
611 pendings [pri][w_->pending - 1].w = w_; 858 pendings [pri][w_->pending - 1].w = w_;
612 pendings [pri][w_->pending - 1].events = revents; 859 pendings [pri][w_->pending - 1].events = revents;
613 } 860 }
614} 861}
615 862
616void inline_speed 863inline_speed void
864feed_reverse (EV_P_ W w)
865{
866 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
867 rfeeds [rfeedcnt++] = w;
868}
869
870inline_size void
871feed_reverse_done (EV_P_ int revents)
872{
873 do
874 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
875 while (rfeedcnt);
876}
877
878inline_speed void
617queue_events (EV_P_ W *events, int eventcnt, int type) 879queue_events (EV_P_ W *events, int eventcnt, int type)
618{ 880{
619 int i; 881 int i;
620 882
621 for (i = 0; i < eventcnt; ++i) 883 for (i = 0; i < eventcnt; ++i)
622 ev_feed_event (EV_A_ events [i], type); 884 ev_feed_event (EV_A_ events [i], type);
623} 885}
624 886
625/*****************************************************************************/ 887/*****************************************************************************/
626 888
627void inline_size 889inline_speed void
628anfds_init (ANFD *base, int count)
629{
630 while (count--)
631 {
632 base->head = 0;
633 base->events = EV_NONE;
634 base->reify = 0;
635
636 ++base;
637 }
638}
639
640void inline_speed
641fd_event (EV_P_ int fd, int revents) 890fd_event_nc (EV_P_ int fd, int revents)
642{ 891{
643 ANFD *anfd = anfds + fd; 892 ANFD *anfd = anfds + fd;
644 ev_io *w; 893 ev_io *w;
645 894
646 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 895 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
650 if (ev) 899 if (ev)
651 ev_feed_event (EV_A_ (W)w, ev); 900 ev_feed_event (EV_A_ (W)w, ev);
652 } 901 }
653} 902}
654 903
904/* do not submit kernel events for fds that have reify set */
905/* because that means they changed while we were polling for new events */
906inline_speed void
907fd_event (EV_P_ int fd, int revents)
908{
909 ANFD *anfd = anfds + fd;
910
911 if (expect_true (!anfd->reify))
912 fd_event_nc (EV_A_ fd, revents);
913}
914
655void 915void
656ev_feed_fd_event (EV_P_ int fd, int revents) 916ev_feed_fd_event (EV_P_ int fd, int revents)
657{ 917{
658 if (fd >= 0 && fd < anfdmax) 918 if (fd >= 0 && fd < anfdmax)
659 fd_event (EV_A_ fd, revents); 919 fd_event_nc (EV_A_ fd, revents);
660} 920}
661 921
662void inline_size 922/* make sure the external fd watch events are in-sync */
923/* with the kernel/libev internal state */
924inline_size void
663fd_reify (EV_P) 925fd_reify (EV_P)
664{ 926{
665 int i; 927 int i;
666 928
667 for (i = 0; i < fdchangecnt; ++i) 929 for (i = 0; i < fdchangecnt; ++i)
… …
676 events |= (unsigned char)w->events; 938 events |= (unsigned char)w->events;
677 939
678#if EV_SELECT_IS_WINSOCKET 940#if EV_SELECT_IS_WINSOCKET
679 if (events) 941 if (events)
680 { 942 {
681 unsigned long argp; 943 unsigned long arg;
682 #ifdef EV_FD_TO_WIN32_HANDLE
683 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 944 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
684 #else
685 anfd->handle = _get_osfhandle (fd);
686 #endif
687 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 945 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
688 } 946 }
689#endif 947#endif
690 948
691 { 949 {
692 unsigned char o_events = anfd->events; 950 unsigned char o_events = anfd->events;
693 unsigned char o_reify = anfd->reify; 951 unsigned char o_reify = anfd->reify;
694 952
695 anfd->reify = 0; 953 anfd->reify = 0;
696 anfd->events = events; 954 anfd->events = events;
697 955
698 if (o_events != events || o_reify & EV_IOFDSET) 956 if (o_events != events || o_reify & EV__IOFDSET)
699 backend_modify (EV_A_ fd, o_events, events); 957 backend_modify (EV_A_ fd, o_events, events);
700 } 958 }
701 } 959 }
702 960
703 fdchangecnt = 0; 961 fdchangecnt = 0;
704} 962}
705 963
706void inline_size 964/* something about the given fd changed */
965inline_size void
707fd_change (EV_P_ int fd, int flags) 966fd_change (EV_P_ int fd, int flags)
708{ 967{
709 unsigned char reify = anfds [fd].reify; 968 unsigned char reify = anfds [fd].reify;
710 anfds [fd].reify |= flags; 969 anfds [fd].reify |= flags;
711 970
… …
715 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 974 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
716 fdchanges [fdchangecnt - 1] = fd; 975 fdchanges [fdchangecnt - 1] = fd;
717 } 976 }
718} 977}
719 978
720void inline_speed 979/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
980inline_speed void
721fd_kill (EV_P_ int fd) 981fd_kill (EV_P_ int fd)
722{ 982{
723 ev_io *w; 983 ev_io *w;
724 984
725 while ((w = (ev_io *)anfds [fd].head)) 985 while ((w = (ev_io *)anfds [fd].head))
… …
727 ev_io_stop (EV_A_ w); 987 ev_io_stop (EV_A_ w);
728 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 988 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
729 } 989 }
730} 990}
731 991
732int inline_size 992/* check whether the given fd is atcually valid, for error recovery */
993inline_size int
733fd_valid (int fd) 994fd_valid (int fd)
734{ 995{
735#ifdef _WIN32 996#ifdef _WIN32
736 return _get_osfhandle (fd) != -1; 997 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
737#else 998#else
738 return fcntl (fd, F_GETFD) != -1; 999 return fcntl (fd, F_GETFD) != -1;
739#endif 1000#endif
740} 1001}
741 1002
… …
745{ 1006{
746 int fd; 1007 int fd;
747 1008
748 for (fd = 0; fd < anfdmax; ++fd) 1009 for (fd = 0; fd < anfdmax; ++fd)
749 if (anfds [fd].events) 1010 if (anfds [fd].events)
750 if (!fd_valid (fd) == -1 && errno == EBADF) 1011 if (!fd_valid (fd) && errno == EBADF)
751 fd_kill (EV_A_ fd); 1012 fd_kill (EV_A_ fd);
752} 1013}
753 1014
754/* called on ENOMEM in select/poll to kill some fds and retry */ 1015/* called on ENOMEM in select/poll to kill some fds and retry */
755static void noinline 1016static void noinline
… …
759 1020
760 for (fd = anfdmax; fd--; ) 1021 for (fd = anfdmax; fd--; )
761 if (anfds [fd].events) 1022 if (anfds [fd].events)
762 { 1023 {
763 fd_kill (EV_A_ fd); 1024 fd_kill (EV_A_ fd);
764 return; 1025 break;
765 } 1026 }
766} 1027}
767 1028
768/* usually called after fork if backend needs to re-arm all fds from scratch */ 1029/* usually called after fork if backend needs to re-arm all fds from scratch */
769static void noinline 1030static void noinline
… …
773 1034
774 for (fd = 0; fd < anfdmax; ++fd) 1035 for (fd = 0; fd < anfdmax; ++fd)
775 if (anfds [fd].events) 1036 if (anfds [fd].events)
776 { 1037 {
777 anfds [fd].events = 0; 1038 anfds [fd].events = 0;
1039 anfds [fd].emask = 0;
778 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1040 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
779 } 1041 }
780} 1042}
781 1043
782/*****************************************************************************/ 1044/*****************************************************************************/
783 1045
… …
791 * at the moment we allow libev the luxury of two heaps, 1053 * at the moment we allow libev the luxury of two heaps,
792 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap 1054 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
793 * which is more cache-efficient. 1055 * which is more cache-efficient.
794 * the difference is about 5% with 50000+ watchers. 1056 * the difference is about 5% with 50000+ watchers.
795 */ 1057 */
796#define EV_USE_4HEAP !EV_MINIMAL
797#if EV_USE_4HEAP 1058#if EV_USE_4HEAP
798 1059
799#define DHEAP 4 1060#define DHEAP 4
800#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1061#define HEAP0 (DHEAP - 1) /* index of first element in heap */
801 1062#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
802/* towards the root */ 1063#define UPHEAP_DONE(p,k) ((p) == (k))
803void inline_speed
804upheap (ANHE *heap, int k)
805{
806 ANHE he = heap [k];
807
808 for (;;)
809 {
810 int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
811
812 if (p == k || ANHE_at (heap [p]) <= ANHE_at (he))
813 break;
814
815 heap [k] = heap [p];
816 ev_active (ANHE_w (heap [k])) = k;
817 k = p;
818 }
819
820 ev_active (ANHE_w (he)) = k;
821 heap [k] = he;
822}
823 1064
824/* away from the root */ 1065/* away from the root */
825void inline_speed 1066inline_speed void
826downheap (ANHE *heap, int N, int k) 1067downheap (ANHE *heap, int N, int k)
827{ 1068{
828 ANHE he = heap [k]; 1069 ANHE he = heap [k];
829 ANHE *E = heap + N + HEAP0; 1070 ANHE *E = heap + N + HEAP0;
830 1071
831 for (;;) 1072 for (;;)
832 { 1073 {
833 ev_tstamp minat; 1074 ev_tstamp minat;
834 ANHE *minpos; 1075 ANHE *minpos;
835 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0; 1076 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
836 1077
837 // find minimum child 1078 /* find minimum child */
838 if (expect_true (pos + DHEAP - 1 < E)) 1079 if (expect_true (pos + DHEAP - 1 < E))
839 { 1080 {
840 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 1081 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
841 if (ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 1082 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
842 if (ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 1083 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
843 if (ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 1084 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
844 } 1085 }
845 else if (pos < E) 1086 else if (pos < E)
846 { 1087 {
847 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 1088 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
848 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 1089 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
… …
853 break; 1094 break;
854 1095
855 if (ANHE_at (he) <= minat) 1096 if (ANHE_at (he) <= minat)
856 break; 1097 break;
857 1098
1099 heap [k] = *minpos;
858 ev_active (ANHE_w (*minpos)) = k; 1100 ev_active (ANHE_w (*minpos)) = k;
859 heap [k] = *minpos;
860 1101
861 k = minpos - heap; 1102 k = minpos - heap;
862 } 1103 }
863 1104
1105 heap [k] = he;
864 ev_active (ANHE_w (he)) = k; 1106 ev_active (ANHE_w (he)) = k;
865 heap [k] = he;
866} 1107}
867 1108
868#else // 4HEAP 1109#else /* 4HEAP */
869 1110
870#define HEAP0 1 1111#define HEAP0 1
1112#define HPARENT(k) ((k) >> 1)
1113#define UPHEAP_DONE(p,k) (!(p))
871 1114
872/* towards the root */ 1115/* away from the root */
873void inline_speed 1116inline_speed void
874upheap (ANHE *heap, int k) 1117downheap (ANHE *heap, int N, int k)
875{ 1118{
876 ANHE he = heap [k]; 1119 ANHE he = heap [k];
877 1120
878 for (;;) 1121 for (;;)
879 { 1122 {
880 int p = k >> 1; 1123 int c = k << 1;
881 1124
882 /* maybe we could use a dummy element at heap [0]? */ 1125 if (c >= N + HEAP0)
883 if (!p || ANHE_at (heap [p]) <= ANHE_at (he))
884 break; 1126 break;
885 1127
886 heap [k] = heap [p];
887 ev_active (ANHE_w (heap [k])) = k;
888 k = p;
889 }
890
891 heap [k] = w;
892 ev_active (ANHE_w (heap [k])) = k;
893}
894
895/* away from the root */
896void inline_speed
897downheap (ANHE *heap, int N, int k)
898{
899 ANHE he = heap [k];
900
901 for (;;)
902 {
903 int c = k << 1;
904
905 if (c > N)
906 break;
907
908 c += c + 1 < N && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1128 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
909 ? 1 : 0; 1129 ? 1 : 0;
910 1130
911 if (w->at <= ANHE_at (heap [c])) 1131 if (ANHE_at (he) <= ANHE_at (heap [c]))
912 break; 1132 break;
913 1133
914 heap [k] = heap [c]; 1134 heap [k] = heap [c];
915 ev_active (ANHE_w (heap [k])) = k; 1135 ev_active (ANHE_w (heap [k])) = k;
916 1136
… …
920 heap [k] = he; 1140 heap [k] = he;
921 ev_active (ANHE_w (he)) = k; 1141 ev_active (ANHE_w (he)) = k;
922} 1142}
923#endif 1143#endif
924 1144
925void inline_size 1145/* towards the root */
1146inline_speed void
1147upheap (ANHE *heap, int k)
1148{
1149 ANHE he = heap [k];
1150
1151 for (;;)
1152 {
1153 int p = HPARENT (k);
1154
1155 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1156 break;
1157
1158 heap [k] = heap [p];
1159 ev_active (ANHE_w (heap [k])) = k;
1160 k = p;
1161 }
1162
1163 heap [k] = he;
1164 ev_active (ANHE_w (he)) = k;
1165}
1166
1167/* move an element suitably so it is in a correct place */
1168inline_size void
926adjustheap (ANHE *heap, int N, int k) 1169adjustheap (ANHE *heap, int N, int k)
927{ 1170{
1171 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
928 upheap (heap, k); 1172 upheap (heap, k);
1173 else
929 downheap (heap, N, k); 1174 downheap (heap, N, k);
1175}
1176
1177/* rebuild the heap: this function is used only once and executed rarely */
1178inline_size void
1179reheap (ANHE *heap, int N)
1180{
1181 int i;
1182
1183 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1184 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1185 for (i = 0; i < N; ++i)
1186 upheap (heap, i + HEAP0);
930} 1187}
931 1188
932/*****************************************************************************/ 1189/*****************************************************************************/
933 1190
1191/* associate signal watchers to a signal signal */
934typedef struct 1192typedef struct
935{ 1193{
1194 EV_ATOMIC_T pending;
1195#if EV_MULTIPLICITY
1196 EV_P;
1197#endif
936 WL head; 1198 WL head;
937 EV_ATOMIC_T gotsig;
938} ANSIG; 1199} ANSIG;
939 1200
940static ANSIG *signals; 1201static ANSIG signals [EV_NSIG - 1];
941static int signalmax;
942
943static EV_ATOMIC_T gotsig;
944
945void inline_size
946signals_init (ANSIG *base, int count)
947{
948 while (count--)
949 {
950 base->head = 0;
951 base->gotsig = 0;
952
953 ++base;
954 }
955}
956 1202
957/*****************************************************************************/ 1203/*****************************************************************************/
958 1204
959void inline_speed 1205/* used to prepare libev internal fd's */
1206/* this is not fork-safe */
1207inline_speed void
960fd_intern (int fd) 1208fd_intern (int fd)
961{ 1209{
962#ifdef _WIN32 1210#ifdef _WIN32
963 int arg = 1; 1211 unsigned long arg = 1;
964 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1212 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
965#else 1213#else
966 fcntl (fd, F_SETFD, FD_CLOEXEC); 1214 fcntl (fd, F_SETFD, FD_CLOEXEC);
967 fcntl (fd, F_SETFL, O_NONBLOCK); 1215 fcntl (fd, F_SETFL, O_NONBLOCK);
968#endif 1216#endif
969} 1217}
970 1218
971static void noinline 1219static void noinline
972evpipe_init (EV_P) 1220evpipe_init (EV_P)
973{ 1221{
974 if (!ev_is_active (&pipeev)) 1222 if (!ev_is_active (&pipe_w))
975 { 1223 {
976#if EV_USE_EVENTFD 1224#if EV_USE_EVENTFD
1225 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1226 if (evfd < 0 && errno == EINVAL)
977 if ((evfd = eventfd (0, 0)) >= 0) 1227 evfd = eventfd (0, 0);
1228
1229 if (evfd >= 0)
978 { 1230 {
979 evpipe [0] = -1; 1231 evpipe [0] = -1;
980 fd_intern (evfd); 1232 fd_intern (evfd); /* doing it twice doesn't hurt */
981 ev_io_set (&pipeev, evfd, EV_READ); 1233 ev_io_set (&pipe_w, evfd, EV_READ);
982 } 1234 }
983 else 1235 else
984#endif 1236#endif
985 { 1237 {
986 while (pipe (evpipe)) 1238 while (pipe (evpipe))
987 syserr ("(libev) error creating signal/async pipe"); 1239 ev_syserr ("(libev) error creating signal/async pipe");
988 1240
989 fd_intern (evpipe [0]); 1241 fd_intern (evpipe [0]);
990 fd_intern (evpipe [1]); 1242 fd_intern (evpipe [1]);
991 ev_io_set (&pipeev, evpipe [0], EV_READ); 1243 ev_io_set (&pipe_w, evpipe [0], EV_READ);
992 } 1244 }
993 1245
994 ev_io_start (EV_A_ &pipeev); 1246 ev_io_start (EV_A_ &pipe_w);
995 ev_unref (EV_A); /* watcher should not keep loop alive */ 1247 ev_unref (EV_A); /* watcher should not keep loop alive */
996 } 1248 }
997} 1249}
998 1250
999void inline_size 1251inline_size void
1000evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1252evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1001{ 1253{
1002 if (!*flag) 1254 if (!*flag)
1003 { 1255 {
1004 int old_errno = errno; /* save errno because write might clobber it */ 1256 int old_errno = errno; /* save errno because write might clobber it */
… …
1017 1269
1018 errno = old_errno; 1270 errno = old_errno;
1019 } 1271 }
1020} 1272}
1021 1273
1274/* called whenever the libev signal pipe */
1275/* got some events (signal, async) */
1022static void 1276static void
1023pipecb (EV_P_ ev_io *iow, int revents) 1277pipecb (EV_P_ ev_io *iow, int revents)
1024{ 1278{
1279 int i;
1280
1025#if EV_USE_EVENTFD 1281#if EV_USE_EVENTFD
1026 if (evfd >= 0) 1282 if (evfd >= 0)
1027 { 1283 {
1028 uint64_t counter; 1284 uint64_t counter;
1029 read (evfd, &counter, sizeof (uint64_t)); 1285 read (evfd, &counter, sizeof (uint64_t));
… …
1033 { 1289 {
1034 char dummy; 1290 char dummy;
1035 read (evpipe [0], &dummy, 1); 1291 read (evpipe [0], &dummy, 1);
1036 } 1292 }
1037 1293
1038 if (gotsig && ev_is_default_loop (EV_A)) 1294 if (sig_pending)
1039 { 1295 {
1040 int signum; 1296 sig_pending = 0;
1041 gotsig = 0;
1042 1297
1043 for (signum = signalmax; signum--; ) 1298 for (i = EV_NSIG - 1; i--; )
1044 if (signals [signum].gotsig) 1299 if (expect_false (signals [i].pending))
1045 ev_feed_signal_event (EV_A_ signum + 1); 1300 ev_feed_signal_event (EV_A_ i + 1);
1046 } 1301 }
1047 1302
1048#if EV_ASYNC_ENABLE 1303#if EV_ASYNC_ENABLE
1049 if (gotasync) 1304 if (async_pending)
1050 { 1305 {
1051 int i; 1306 async_pending = 0;
1052 gotasync = 0;
1053 1307
1054 for (i = asynccnt; i--; ) 1308 for (i = asynccnt; i--; )
1055 if (asyncs [i]->sent) 1309 if (asyncs [i]->sent)
1056 { 1310 {
1057 asyncs [i]->sent = 0; 1311 asyncs [i]->sent = 0;
… …
1065 1319
1066static void 1320static void
1067ev_sighandler (int signum) 1321ev_sighandler (int signum)
1068{ 1322{
1069#if EV_MULTIPLICITY 1323#if EV_MULTIPLICITY
1070 struct ev_loop *loop = &default_loop_struct; 1324 EV_P = signals [signum - 1].loop;
1071#endif 1325#endif
1072 1326
1073#if _WIN32 1327#ifdef _WIN32
1074 signal (signum, ev_sighandler); 1328 signal (signum, ev_sighandler);
1075#endif 1329#endif
1076 1330
1077 signals [signum - 1].gotsig = 1; 1331 signals [signum - 1].pending = 1;
1078 evpipe_write (EV_A_ &gotsig); 1332 evpipe_write (EV_A_ &sig_pending);
1079} 1333}
1080 1334
1081void noinline 1335void noinline
1082ev_feed_signal_event (EV_P_ int signum) 1336ev_feed_signal_event (EV_P_ int signum)
1083{ 1337{
1084 WL w; 1338 WL w;
1085 1339
1340 if (expect_false (signum <= 0 || signum > EV_NSIG))
1341 return;
1342
1343 --signum;
1344
1086#if EV_MULTIPLICITY 1345#if EV_MULTIPLICITY
1087 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1346 /* it is permissible to try to feed a signal to the wrong loop */
1088#endif 1347 /* or, likely more useful, feeding a signal nobody is waiting for */
1089 1348
1090 --signum; 1349 if (expect_false (signals [signum].loop != EV_A))
1091
1092 if (signum < 0 || signum >= signalmax)
1093 return; 1350 return;
1351#endif
1094 1352
1095 signals [signum].gotsig = 0; 1353 signals [signum].pending = 0;
1096 1354
1097 for (w = signals [signum].head; w; w = w->next) 1355 for (w = signals [signum].head; w; w = w->next)
1098 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1356 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1099} 1357}
1100 1358
1359#if EV_USE_SIGNALFD
1360static void
1361sigfdcb (EV_P_ ev_io *iow, int revents)
1362{
1363 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1364
1365 for (;;)
1366 {
1367 ssize_t res = read (sigfd, si, sizeof (si));
1368
1369 /* not ISO-C, as res might be -1, but works with SuS */
1370 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1371 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1372
1373 if (res < (ssize_t)sizeof (si))
1374 break;
1375 }
1376}
1377#endif
1378
1101/*****************************************************************************/ 1379/*****************************************************************************/
1102 1380
1103static WL childs [EV_PID_HASHSIZE]; 1381static WL childs [EV_PID_HASHSIZE];
1104 1382
1105#ifndef _WIN32 1383#ifndef _WIN32
… …
1108 1386
1109#ifndef WIFCONTINUED 1387#ifndef WIFCONTINUED
1110# define WIFCONTINUED(status) 0 1388# define WIFCONTINUED(status) 0
1111#endif 1389#endif
1112 1390
1113void inline_speed 1391/* handle a single child status event */
1392inline_speed void
1114child_reap (EV_P_ int chain, int pid, int status) 1393child_reap (EV_P_ int chain, int pid, int status)
1115{ 1394{
1116 ev_child *w; 1395 ev_child *w;
1117 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1396 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1118 1397
… …
1131 1410
1132#ifndef WCONTINUED 1411#ifndef WCONTINUED
1133# define WCONTINUED 0 1412# define WCONTINUED 0
1134#endif 1413#endif
1135 1414
1415/* called on sigchld etc., calls waitpid */
1136static void 1416static void
1137childcb (EV_P_ ev_signal *sw, int revents) 1417childcb (EV_P_ ev_signal *sw, int revents)
1138{ 1418{
1139 int pid, status; 1419 int pid, status;
1140 1420
… …
1221 /* kqueue is borked on everything but netbsd apparently */ 1501 /* kqueue is borked on everything but netbsd apparently */
1222 /* it usually doesn't work correctly on anything but sockets and pipes */ 1502 /* it usually doesn't work correctly on anything but sockets and pipes */
1223 flags &= ~EVBACKEND_KQUEUE; 1503 flags &= ~EVBACKEND_KQUEUE;
1224#endif 1504#endif
1225#ifdef __APPLE__ 1505#ifdef __APPLE__
1226 // flags &= ~EVBACKEND_KQUEUE; for documentation 1506 /* only select works correctly on that "unix-certified" platform */
1227 flags &= ~EVBACKEND_POLL; 1507 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1508 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1228#endif 1509#endif
1229 1510
1230 return flags; 1511 return flags;
1231} 1512}
1232 1513
… …
1246ev_backend (EV_P) 1527ev_backend (EV_P)
1247{ 1528{
1248 return backend; 1529 return backend;
1249} 1530}
1250 1531
1532#if EV_MINIMAL < 2
1251unsigned int 1533unsigned int
1252ev_loop_count (EV_P) 1534ev_loop_count (EV_P)
1253{ 1535{
1254 return loop_count; 1536 return loop_count;
1255} 1537}
1256 1538
1539unsigned int
1540ev_loop_depth (EV_P)
1541{
1542 return loop_depth;
1543}
1544
1257void 1545void
1258ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1546ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1259{ 1547{
1260 io_blocktime = interval; 1548 io_blocktime = interval;
1261} 1549}
… …
1264ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1552ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1265{ 1553{
1266 timeout_blocktime = interval; 1554 timeout_blocktime = interval;
1267} 1555}
1268 1556
1557void
1558ev_set_userdata (EV_P_ void *data)
1559{
1560 userdata = data;
1561}
1562
1563void *
1564ev_userdata (EV_P)
1565{
1566 return userdata;
1567}
1568
1569void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1570{
1571 invoke_cb = invoke_pending_cb;
1572}
1573
1574void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1575{
1576 release_cb = release;
1577 acquire_cb = acquire;
1578}
1579#endif
1580
1581/* initialise a loop structure, must be zero-initialised */
1269static void noinline 1582static void noinline
1270loop_init (EV_P_ unsigned int flags) 1583loop_init (EV_P_ unsigned int flags)
1271{ 1584{
1272 if (!backend) 1585 if (!backend)
1273 { 1586 {
1587#if EV_USE_REALTIME
1588 if (!have_realtime)
1589 {
1590 struct timespec ts;
1591
1592 if (!clock_gettime (CLOCK_REALTIME, &ts))
1593 have_realtime = 1;
1594 }
1595#endif
1596
1274#if EV_USE_MONOTONIC 1597#if EV_USE_MONOTONIC
1598 if (!have_monotonic)
1275 { 1599 {
1276 struct timespec ts; 1600 struct timespec ts;
1601
1277 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1602 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1278 have_monotonic = 1; 1603 have_monotonic = 1;
1279 } 1604 }
1280#endif 1605#endif
1606
1607 /* pid check not overridable via env */
1608#ifndef _WIN32
1609 if (flags & EVFLAG_FORKCHECK)
1610 curpid = getpid ();
1611#endif
1612
1613 if (!(flags & EVFLAG_NOENV)
1614 && !enable_secure ()
1615 && getenv ("LIBEV_FLAGS"))
1616 flags = atoi (getenv ("LIBEV_FLAGS"));
1281 1617
1282 ev_rt_now = ev_time (); 1618 ev_rt_now = ev_time ();
1283 mn_now = get_clock (); 1619 mn_now = get_clock ();
1284 now_floor = mn_now; 1620 now_floor = mn_now;
1285 rtmn_diff = ev_rt_now - mn_now; 1621 rtmn_diff = ev_rt_now - mn_now;
1622#if EV_MINIMAL < 2
1623 invoke_cb = ev_invoke_pending;
1624#endif
1286 1625
1287 io_blocktime = 0.; 1626 io_blocktime = 0.;
1288 timeout_blocktime = 0.; 1627 timeout_blocktime = 0.;
1289 backend = 0; 1628 backend = 0;
1290 backend_fd = -1; 1629 backend_fd = -1;
1291 gotasync = 0; 1630 sig_pending = 0;
1631#if EV_ASYNC_ENABLE
1632 async_pending = 0;
1633#endif
1292#if EV_USE_INOTIFY 1634#if EV_USE_INOTIFY
1293 fs_fd = -2; 1635 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1294#endif 1636#endif
1295 1637#if EV_USE_SIGNALFD
1296 /* pid check not overridable via env */ 1638 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1297#ifndef _WIN32
1298 if (flags & EVFLAG_FORKCHECK)
1299 curpid = getpid ();
1300#endif 1639#endif
1301
1302 if (!(flags & EVFLAG_NOENV)
1303 && !enable_secure ()
1304 && getenv ("LIBEV_FLAGS"))
1305 flags = atoi (getenv ("LIBEV_FLAGS"));
1306 1640
1307 if (!(flags & 0x0000ffffU)) 1641 if (!(flags & 0x0000ffffU))
1308 flags |= ev_recommended_backends (); 1642 flags |= ev_recommended_backends ();
1309 1643
1310#if EV_USE_PORT 1644#if EV_USE_PORT
… …
1321#endif 1655#endif
1322#if EV_USE_SELECT 1656#if EV_USE_SELECT
1323 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1657 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1324#endif 1658#endif
1325 1659
1660 ev_prepare_init (&pending_w, pendingcb);
1661
1326 ev_init (&pipeev, pipecb); 1662 ev_init (&pipe_w, pipecb);
1327 ev_set_priority (&pipeev, EV_MAXPRI); 1663 ev_set_priority (&pipe_w, EV_MAXPRI);
1328 } 1664 }
1329} 1665}
1330 1666
1667/* free up a loop structure */
1331static void noinline 1668static void noinline
1332loop_destroy (EV_P) 1669loop_destroy (EV_P)
1333{ 1670{
1334 int i; 1671 int i;
1335 1672
1336 if (ev_is_active (&pipeev)) 1673 if (ev_is_active (&pipe_w))
1337 { 1674 {
1338 ev_ref (EV_A); /* signal watcher */ 1675 /*ev_ref (EV_A);*/
1339 ev_io_stop (EV_A_ &pipeev); 1676 /*ev_io_stop (EV_A_ &pipe_w);*/
1340 1677
1341#if EV_USE_EVENTFD 1678#if EV_USE_EVENTFD
1342 if (evfd >= 0) 1679 if (evfd >= 0)
1343 close (evfd); 1680 close (evfd);
1344#endif 1681#endif
1345 1682
1346 if (evpipe [0] >= 0) 1683 if (evpipe [0] >= 0)
1347 { 1684 {
1348 close (evpipe [0]); 1685 EV_WIN32_CLOSE_FD (evpipe [0]);
1349 close (evpipe [1]); 1686 EV_WIN32_CLOSE_FD (evpipe [1]);
1350 } 1687 }
1351 } 1688 }
1689
1690#if EV_USE_SIGNALFD
1691 if (ev_is_active (&sigfd_w))
1692 close (sigfd);
1693#endif
1352 1694
1353#if EV_USE_INOTIFY 1695#if EV_USE_INOTIFY
1354 if (fs_fd >= 0) 1696 if (fs_fd >= 0)
1355 close (fs_fd); 1697 close (fs_fd);
1356#endif 1698#endif
… …
1380#if EV_IDLE_ENABLE 1722#if EV_IDLE_ENABLE
1381 array_free (idle, [i]); 1723 array_free (idle, [i]);
1382#endif 1724#endif
1383 } 1725 }
1384 1726
1385 ev_free (anfds); anfdmax = 0; 1727 ev_free (anfds); anfds = 0; anfdmax = 0;
1386 1728
1387 /* have to use the microsoft-never-gets-it-right macro */ 1729 /* have to use the microsoft-never-gets-it-right macro */
1730 array_free (rfeed, EMPTY);
1388 array_free (fdchange, EMPTY); 1731 array_free (fdchange, EMPTY);
1389 array_free (timer, EMPTY); 1732 array_free (timer, EMPTY);
1390#if EV_PERIODIC_ENABLE 1733#if EV_PERIODIC_ENABLE
1391 array_free (periodic, EMPTY); 1734 array_free (periodic, EMPTY);
1392#endif 1735#endif
… …
1401 1744
1402 backend = 0; 1745 backend = 0;
1403} 1746}
1404 1747
1405#if EV_USE_INOTIFY 1748#if EV_USE_INOTIFY
1406void inline_size infy_fork (EV_P); 1749inline_size void infy_fork (EV_P);
1407#endif 1750#endif
1408 1751
1409void inline_size 1752inline_size void
1410loop_fork (EV_P) 1753loop_fork (EV_P)
1411{ 1754{
1412#if EV_USE_PORT 1755#if EV_USE_PORT
1413 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1756 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1414#endif 1757#endif
… …
1420#endif 1763#endif
1421#if EV_USE_INOTIFY 1764#if EV_USE_INOTIFY
1422 infy_fork (EV_A); 1765 infy_fork (EV_A);
1423#endif 1766#endif
1424 1767
1425 if (ev_is_active (&pipeev)) 1768 if (ev_is_active (&pipe_w))
1426 { 1769 {
1427 /* this "locks" the handlers against writing to the pipe */ 1770 /* this "locks" the handlers against writing to the pipe */
1428 /* while we modify the fd vars */ 1771 /* while we modify the fd vars */
1429 gotsig = 1; 1772 sig_pending = 1;
1430#if EV_ASYNC_ENABLE 1773#if EV_ASYNC_ENABLE
1431 gotasync = 1; 1774 async_pending = 1;
1432#endif 1775#endif
1433 1776
1434 ev_ref (EV_A); 1777 ev_ref (EV_A);
1435 ev_io_stop (EV_A_ &pipeev); 1778 ev_io_stop (EV_A_ &pipe_w);
1436 1779
1437#if EV_USE_EVENTFD 1780#if EV_USE_EVENTFD
1438 if (evfd >= 0) 1781 if (evfd >= 0)
1439 close (evfd); 1782 close (evfd);
1440#endif 1783#endif
1441 1784
1442 if (evpipe [0] >= 0) 1785 if (evpipe [0] >= 0)
1443 { 1786 {
1444 close (evpipe [0]); 1787 EV_WIN32_CLOSE_FD (evpipe [0]);
1445 close (evpipe [1]); 1788 EV_WIN32_CLOSE_FD (evpipe [1]);
1446 } 1789 }
1447 1790
1448 evpipe_init (EV_A); 1791 evpipe_init (EV_A);
1449 /* now iterate over everything, in case we missed something */ 1792 /* now iterate over everything, in case we missed something */
1450 pipecb (EV_A_ &pipeev, EV_READ); 1793 pipecb (EV_A_ &pipe_w, EV_READ);
1451 } 1794 }
1452 1795
1453 postfork = 0; 1796 postfork = 0;
1454} 1797}
1455 1798
1456#if EV_MULTIPLICITY 1799#if EV_MULTIPLICITY
1800
1457struct ev_loop * 1801struct ev_loop *
1458ev_loop_new (unsigned int flags) 1802ev_loop_new (unsigned int flags)
1459{ 1803{
1460 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1804 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1461 1805
1462 memset (loop, 0, sizeof (struct ev_loop)); 1806 memset (EV_A, 0, sizeof (struct ev_loop));
1463
1464 loop_init (EV_A_ flags); 1807 loop_init (EV_A_ flags);
1465 1808
1466 if (ev_backend (EV_A)) 1809 if (ev_backend (EV_A))
1467 return loop; 1810 return EV_A;
1468 1811
1469 return 0; 1812 return 0;
1470} 1813}
1471 1814
1472void 1815void
… …
1478 1821
1479void 1822void
1480ev_loop_fork (EV_P) 1823ev_loop_fork (EV_P)
1481{ 1824{
1482 postfork = 1; /* must be in line with ev_default_fork */ 1825 postfork = 1; /* must be in line with ev_default_fork */
1826}
1827#endif /* multiplicity */
1828
1829#if EV_VERIFY
1830static void noinline
1831verify_watcher (EV_P_ W w)
1832{
1833 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1834
1835 if (w->pending)
1836 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1837}
1838
1839static void noinline
1840verify_heap (EV_P_ ANHE *heap, int N)
1841{
1842 int i;
1843
1844 for (i = HEAP0; i < N + HEAP0; ++i)
1845 {
1846 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1847 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1848 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1849
1850 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1851 }
1852}
1853
1854static void noinline
1855array_verify (EV_P_ W *ws, int cnt)
1856{
1857 while (cnt--)
1858 {
1859 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1860 verify_watcher (EV_A_ ws [cnt]);
1861 }
1862}
1863#endif
1864
1865#if EV_MINIMAL < 2
1866void
1867ev_loop_verify (EV_P)
1868{
1869#if EV_VERIFY
1870 int i;
1871 WL w;
1872
1873 assert (activecnt >= -1);
1874
1875 assert (fdchangemax >= fdchangecnt);
1876 for (i = 0; i < fdchangecnt; ++i)
1877 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1878
1879 assert (anfdmax >= 0);
1880 for (i = 0; i < anfdmax; ++i)
1881 for (w = anfds [i].head; w; w = w->next)
1882 {
1883 verify_watcher (EV_A_ (W)w);
1884 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1885 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1886 }
1887
1888 assert (timermax >= timercnt);
1889 verify_heap (EV_A_ timers, timercnt);
1890
1891#if EV_PERIODIC_ENABLE
1892 assert (periodicmax >= periodiccnt);
1893 verify_heap (EV_A_ periodics, periodiccnt);
1894#endif
1895
1896 for (i = NUMPRI; i--; )
1897 {
1898 assert (pendingmax [i] >= pendingcnt [i]);
1899#if EV_IDLE_ENABLE
1900 assert (idleall >= 0);
1901 assert (idlemax [i] >= idlecnt [i]);
1902 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1903#endif
1904 }
1905
1906#if EV_FORK_ENABLE
1907 assert (forkmax >= forkcnt);
1908 array_verify (EV_A_ (W *)forks, forkcnt);
1909#endif
1910
1911#if EV_ASYNC_ENABLE
1912 assert (asyncmax >= asynccnt);
1913 array_verify (EV_A_ (W *)asyncs, asynccnt);
1914#endif
1915
1916 assert (preparemax >= preparecnt);
1917 array_verify (EV_A_ (W *)prepares, preparecnt);
1918
1919 assert (checkmax >= checkcnt);
1920 array_verify (EV_A_ (W *)checks, checkcnt);
1921
1922# if 0
1923 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1924 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1925# endif
1926#endif
1483} 1927}
1484#endif 1928#endif
1485 1929
1486#if EV_MULTIPLICITY 1930#if EV_MULTIPLICITY
1487struct ev_loop * 1931struct ev_loop *
… …
1492#endif 1936#endif
1493{ 1937{
1494 if (!ev_default_loop_ptr) 1938 if (!ev_default_loop_ptr)
1495 { 1939 {
1496#if EV_MULTIPLICITY 1940#if EV_MULTIPLICITY
1497 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1941 EV_P = ev_default_loop_ptr = &default_loop_struct;
1498#else 1942#else
1499 ev_default_loop_ptr = 1; 1943 ev_default_loop_ptr = 1;
1500#endif 1944#endif
1501 1945
1502 loop_init (EV_A_ flags); 1946 loop_init (EV_A_ flags);
… …
1519 1963
1520void 1964void
1521ev_default_destroy (void) 1965ev_default_destroy (void)
1522{ 1966{
1523#if EV_MULTIPLICITY 1967#if EV_MULTIPLICITY
1524 struct ev_loop *loop = ev_default_loop_ptr; 1968 EV_P = ev_default_loop_ptr;
1525#endif 1969#endif
1970
1971 ev_default_loop_ptr = 0;
1526 1972
1527#ifndef _WIN32 1973#ifndef _WIN32
1528 ev_ref (EV_A); /* child watcher */ 1974 ev_ref (EV_A); /* child watcher */
1529 ev_signal_stop (EV_A_ &childev); 1975 ev_signal_stop (EV_A_ &childev);
1530#endif 1976#endif
… …
1534 1980
1535void 1981void
1536ev_default_fork (void) 1982ev_default_fork (void)
1537{ 1983{
1538#if EV_MULTIPLICITY 1984#if EV_MULTIPLICITY
1539 struct ev_loop *loop = ev_default_loop_ptr; 1985 EV_P = ev_default_loop_ptr;
1540#endif 1986#endif
1541 1987
1542 if (backend)
1543 postfork = 1; /* must be in line with ev_loop_fork */ 1988 postfork = 1; /* must be in line with ev_loop_fork */
1544} 1989}
1545 1990
1546/*****************************************************************************/ 1991/*****************************************************************************/
1547 1992
1548void 1993void
1549ev_invoke (EV_P_ void *w, int revents) 1994ev_invoke (EV_P_ void *w, int revents)
1550{ 1995{
1551 EV_CB_INVOKE ((W)w, revents); 1996 EV_CB_INVOKE ((W)w, revents);
1552} 1997}
1553 1998
1554void inline_speed 1999unsigned int
1555call_pending (EV_P) 2000ev_pending_count (EV_P)
2001{
2002 int pri;
2003 unsigned int count = 0;
2004
2005 for (pri = NUMPRI; pri--; )
2006 count += pendingcnt [pri];
2007
2008 return count;
2009}
2010
2011void noinline
2012ev_invoke_pending (EV_P)
1556{ 2013{
1557 int pri; 2014 int pri;
1558 2015
1559 for (pri = NUMPRI; pri--; ) 2016 for (pri = NUMPRI; pri--; )
1560 while (pendingcnt [pri]) 2017 while (pendingcnt [pri])
1561 { 2018 {
1562 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2019 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1563 2020
1564 if (expect_true (p->w))
1565 {
1566 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2021 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2022 /* ^ this is no longer true, as pending_w could be here */
1567 2023
1568 p->w->pending = 0; 2024 p->w->pending = 0;
1569 EV_CB_INVOKE (p->w, p->events); 2025 EV_CB_INVOKE (p->w, p->events);
1570 } 2026 EV_FREQUENT_CHECK;
1571 } 2027 }
1572} 2028}
1573 2029
1574#if EV_IDLE_ENABLE 2030#if EV_IDLE_ENABLE
1575void inline_size 2031/* make idle watchers pending. this handles the "call-idle */
2032/* only when higher priorities are idle" logic */
2033inline_size void
1576idle_reify (EV_P) 2034idle_reify (EV_P)
1577{ 2035{
1578 if (expect_false (idleall)) 2036 if (expect_false (idleall))
1579 { 2037 {
1580 int pri; 2038 int pri;
… …
1592 } 2050 }
1593 } 2051 }
1594} 2052}
1595#endif 2053#endif
1596 2054
1597void inline_size 2055/* make timers pending */
2056inline_size void
1598timers_reify (EV_P) 2057timers_reify (EV_P)
1599{ 2058{
2059 EV_FREQUENT_CHECK;
2060
1600 while (timercnt && ANHE_at (timers [HEAP0]) <= mn_now) 2061 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1601 { 2062 {
1602 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2063 do
1603
1604 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1605
1606 /* first reschedule or stop timer */
1607 if (w->repeat)
1608 { 2064 {
2065 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2066
2067 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2068
2069 /* first reschedule or stop timer */
2070 if (w->repeat)
2071 {
2072 ev_at (w) += w->repeat;
2073 if (ev_at (w) < mn_now)
2074 ev_at (w) = mn_now;
2075
1609 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2076 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1610 2077
1611 ev_at (w) += w->repeat;
1612 if (ev_at (w) < mn_now)
1613 ev_at (w) = mn_now;
1614
1615 ANHE_at_set (timers [HEAP0]); 2078 ANHE_at_cache (timers [HEAP0]);
1616 downheap (timers, timercnt, HEAP0); 2079 downheap (timers, timercnt, HEAP0);
2080 }
2081 else
2082 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2083
2084 EV_FREQUENT_CHECK;
2085 feed_reverse (EV_A_ (W)w);
1617 } 2086 }
1618 else 2087 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1619 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1620 2088
1621 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 2089 feed_reverse_done (EV_A_ EV_TIMEOUT);
1622 } 2090 }
1623} 2091}
1624 2092
1625#if EV_PERIODIC_ENABLE 2093#if EV_PERIODIC_ENABLE
1626void inline_size 2094/* make periodics pending */
2095inline_size void
1627periodics_reify (EV_P) 2096periodics_reify (EV_P)
1628{ 2097{
2098 EV_FREQUENT_CHECK;
2099
1629 while (periodiccnt && ANHE_at (periodics [HEAP0]) <= ev_rt_now) 2100 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1630 { 2101 {
1631 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2102 int feed_count = 0;
1632 2103
1633 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2104 do
1634
1635 /* first reschedule or stop timer */
1636 if (w->reschedule_cb)
1637 { 2105 {
2106 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2107
2108 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2109
2110 /* first reschedule or stop timer */
2111 if (w->reschedule_cb)
2112 {
1638 ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON); 2113 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2114
1639 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now)); 2115 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
2116
1640 ANHE_at_set (periodics [HEAP0]); 2117 ANHE_at_cache (periodics [HEAP0]);
1641 downheap (periodics, periodiccnt, HEAP0); 2118 downheap (periodics, periodiccnt, HEAP0);
2119 }
2120 else if (w->interval)
2121 {
2122 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2123 /* if next trigger time is not sufficiently in the future, put it there */
2124 /* this might happen because of floating point inexactness */
2125 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2126 {
2127 ev_at (w) += w->interval;
2128
2129 /* if interval is unreasonably low we might still have a time in the past */
2130 /* so correct this. this will make the periodic very inexact, but the user */
2131 /* has effectively asked to get triggered more often than possible */
2132 if (ev_at (w) < ev_rt_now)
2133 ev_at (w) = ev_rt_now;
2134 }
2135
2136 ANHE_at_cache (periodics [HEAP0]);
2137 downheap (periodics, periodiccnt, HEAP0);
2138 }
2139 else
2140 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2141
2142 EV_FREQUENT_CHECK;
2143 feed_reverse (EV_A_ (W)w);
1642 } 2144 }
1643 else if (w->interval) 2145 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1644 {
1645 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1646 if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1647 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1648 ANHE_at_set (periodics [HEAP0]);
1649 downheap (periodics, periodiccnt, HEAP0);
1650 }
1651 else
1652 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1653 2146
1654 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2147 feed_reverse_done (EV_A_ EV_PERIODIC);
1655 } 2148 }
1656} 2149}
1657 2150
2151/* simply recalculate all periodics */
2152/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1658static void noinline 2153static void noinline
1659periodics_reschedule (EV_P) 2154periodics_reschedule (EV_P)
1660{ 2155{
1661 int i; 2156 int i;
1662 2157
… …
1668 if (w->reschedule_cb) 2163 if (w->reschedule_cb)
1669 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2164 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1670 else if (w->interval) 2165 else if (w->interval)
1671 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2166 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1672 2167
1673 ANHE_at_set (periodics [i]); 2168 ANHE_at_cache (periodics [i]);
2169 }
2170
2171 reheap (periodics, periodiccnt);
2172}
2173#endif
2174
2175/* adjust all timers by a given offset */
2176static void noinline
2177timers_reschedule (EV_P_ ev_tstamp adjust)
2178{
2179 int i;
2180
2181 for (i = 0; i < timercnt; ++i)
1674 } 2182 {
1675 2183 ANHE *he = timers + i + HEAP0;
1676 /* now rebuild the heap, this for the 2-heap, inefficient for the 4-heap, but correct */ 2184 ANHE_w (*he)->at += adjust;
1677 for (i = periodiccnt >> 1; --i; ) 2185 ANHE_at_cache (*he);
1678 downheap (periodics, periodiccnt, i + HEAP0); 2186 }
1679} 2187}
1680#endif
1681 2188
1682void inline_speed 2189/* fetch new monotonic and realtime times from the kernel */
2190/* also detect if there was a timejump, and act accordingly */
2191inline_speed void
1683time_update (EV_P_ ev_tstamp max_block) 2192time_update (EV_P_ ev_tstamp max_block)
1684{ 2193{
1685 int i;
1686
1687#if EV_USE_MONOTONIC 2194#if EV_USE_MONOTONIC
1688 if (expect_true (have_monotonic)) 2195 if (expect_true (have_monotonic))
1689 { 2196 {
2197 int i;
1690 ev_tstamp odiff = rtmn_diff; 2198 ev_tstamp odiff = rtmn_diff;
1691 2199
1692 mn_now = get_clock (); 2200 mn_now = get_clock ();
1693 2201
1694 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2202 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1720 ev_rt_now = ev_time (); 2228 ev_rt_now = ev_time ();
1721 mn_now = get_clock (); 2229 mn_now = get_clock ();
1722 now_floor = mn_now; 2230 now_floor = mn_now;
1723 } 2231 }
1724 2232
2233 /* no timer adjustment, as the monotonic clock doesn't jump */
2234 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1725# if EV_PERIODIC_ENABLE 2235# if EV_PERIODIC_ENABLE
1726 periodics_reschedule (EV_A); 2236 periodics_reschedule (EV_A);
1727# endif 2237# endif
1728 /* no timer adjustment, as the monotonic clock doesn't jump */
1729 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1730 } 2238 }
1731 else 2239 else
1732#endif 2240#endif
1733 { 2241 {
1734 ev_rt_now = ev_time (); 2242 ev_rt_now = ev_time ();
1735 2243
1736 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2244 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1737 { 2245 {
2246 /* adjust timers. this is easy, as the offset is the same for all of them */
2247 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1738#if EV_PERIODIC_ENABLE 2248#if EV_PERIODIC_ENABLE
1739 periodics_reschedule (EV_A); 2249 periodics_reschedule (EV_A);
1740#endif 2250#endif
1741 /* adjust timers. this is easy, as the offset is the same for all of them */
1742 for (i = 0; i < timercnt; ++i)
1743 {
1744 ANHE *he = timers + i + HEAP0;
1745 ANHE_w (*he)->at += ev_rt_now - mn_now;
1746 ANHE_at_set (*he);
1747 }
1748 } 2251 }
1749 2252
1750 mn_now = ev_rt_now; 2253 mn_now = ev_rt_now;
1751 } 2254 }
1752} 2255}
1753 2256
1754void 2257void
1755ev_ref (EV_P)
1756{
1757 ++activecnt;
1758}
1759
1760void
1761ev_unref (EV_P)
1762{
1763 --activecnt;
1764}
1765
1766static int loop_done;
1767
1768void
1769ev_loop (EV_P_ int flags) 2258ev_loop (EV_P_ int flags)
1770{ 2259{
2260#if EV_MINIMAL < 2
2261 ++loop_depth;
2262#endif
2263
2264 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2265
1771 loop_done = EVUNLOOP_CANCEL; 2266 loop_done = EVUNLOOP_CANCEL;
1772 2267
1773 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2268 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1774 2269
1775 do 2270 do
1776 { 2271 {
2272#if EV_VERIFY >= 2
2273 ev_loop_verify (EV_A);
2274#endif
2275
1777#ifndef _WIN32 2276#ifndef _WIN32
1778 if (expect_false (curpid)) /* penalise the forking check even more */ 2277 if (expect_false (curpid)) /* penalise the forking check even more */
1779 if (expect_false (getpid () != curpid)) 2278 if (expect_false (getpid () != curpid))
1780 { 2279 {
1781 curpid = getpid (); 2280 curpid = getpid ();
… …
1787 /* we might have forked, so queue fork handlers */ 2286 /* we might have forked, so queue fork handlers */
1788 if (expect_false (postfork)) 2287 if (expect_false (postfork))
1789 if (forkcnt) 2288 if (forkcnt)
1790 { 2289 {
1791 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2290 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1792 call_pending (EV_A); 2291 EV_INVOKE_PENDING;
1793 } 2292 }
1794#endif 2293#endif
1795 2294
1796 /* queue prepare watchers (and execute them) */ 2295 /* queue prepare watchers (and execute them) */
1797 if (expect_false (preparecnt)) 2296 if (expect_false (preparecnt))
1798 { 2297 {
1799 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2298 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1800 call_pending (EV_A); 2299 EV_INVOKE_PENDING;
1801 } 2300 }
1802 2301
1803 if (expect_false (!activecnt)) 2302 if (expect_false (loop_done))
1804 break; 2303 break;
1805 2304
1806 /* we might have forked, so reify kernel state if necessary */ 2305 /* we might have forked, so reify kernel state if necessary */
1807 if (expect_false (postfork)) 2306 if (expect_false (postfork))
1808 loop_fork (EV_A); 2307 loop_fork (EV_A);
… …
1815 ev_tstamp waittime = 0.; 2314 ev_tstamp waittime = 0.;
1816 ev_tstamp sleeptime = 0.; 2315 ev_tstamp sleeptime = 0.;
1817 2316
1818 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2317 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1819 { 2318 {
2319 /* remember old timestamp for io_blocktime calculation */
2320 ev_tstamp prev_mn_now = mn_now;
2321
1820 /* update time to cancel out callback processing overhead */ 2322 /* update time to cancel out callback processing overhead */
1821 time_update (EV_A_ 1e100); 2323 time_update (EV_A_ 1e100);
1822 2324
1823 waittime = MAX_BLOCKTIME; 2325 waittime = MAX_BLOCKTIME;
1824 2326
… …
1834 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2336 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1835 if (waittime > to) waittime = to; 2337 if (waittime > to) waittime = to;
1836 } 2338 }
1837#endif 2339#endif
1838 2340
2341 /* don't let timeouts decrease the waittime below timeout_blocktime */
1839 if (expect_false (waittime < timeout_blocktime)) 2342 if (expect_false (waittime < timeout_blocktime))
1840 waittime = timeout_blocktime; 2343 waittime = timeout_blocktime;
1841 2344
1842 sleeptime = waittime - backend_fudge; 2345 /* extra check because io_blocktime is commonly 0 */
1843
1844 if (expect_true (sleeptime > io_blocktime)) 2346 if (expect_false (io_blocktime))
1845 sleeptime = io_blocktime;
1846
1847 if (sleeptime)
1848 { 2347 {
2348 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2349
2350 if (sleeptime > waittime - backend_fudge)
2351 sleeptime = waittime - backend_fudge;
2352
2353 if (expect_true (sleeptime > 0.))
2354 {
1849 ev_sleep (sleeptime); 2355 ev_sleep (sleeptime);
1850 waittime -= sleeptime; 2356 waittime -= sleeptime;
2357 }
1851 } 2358 }
1852 } 2359 }
1853 2360
2361#if EV_MINIMAL < 2
1854 ++loop_count; 2362 ++loop_count;
2363#endif
2364 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1855 backend_poll (EV_A_ waittime); 2365 backend_poll (EV_A_ waittime);
2366 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1856 2367
1857 /* update ev_rt_now, do magic */ 2368 /* update ev_rt_now, do magic */
1858 time_update (EV_A_ waittime + sleeptime); 2369 time_update (EV_A_ waittime + sleeptime);
1859 } 2370 }
1860 2371
… …
1871 2382
1872 /* queue check watchers, to be executed first */ 2383 /* queue check watchers, to be executed first */
1873 if (expect_false (checkcnt)) 2384 if (expect_false (checkcnt))
1874 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2385 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1875 2386
1876 call_pending (EV_A); 2387 EV_INVOKE_PENDING;
1877 } 2388 }
1878 while (expect_true ( 2389 while (expect_true (
1879 activecnt 2390 activecnt
1880 && !loop_done 2391 && !loop_done
1881 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2392 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1882 )); 2393 ));
1883 2394
1884 if (loop_done == EVUNLOOP_ONE) 2395 if (loop_done == EVUNLOOP_ONE)
1885 loop_done = EVUNLOOP_CANCEL; 2396 loop_done = EVUNLOOP_CANCEL;
2397
2398#if EV_MINIMAL < 2
2399 --loop_depth;
2400#endif
1886} 2401}
1887 2402
1888void 2403void
1889ev_unloop (EV_P_ int how) 2404ev_unloop (EV_P_ int how)
1890{ 2405{
1891 loop_done = how; 2406 loop_done = how;
1892} 2407}
1893 2408
2409void
2410ev_ref (EV_P)
2411{
2412 ++activecnt;
2413}
2414
2415void
2416ev_unref (EV_P)
2417{
2418 --activecnt;
2419}
2420
2421void
2422ev_now_update (EV_P)
2423{
2424 time_update (EV_A_ 1e100);
2425}
2426
2427void
2428ev_suspend (EV_P)
2429{
2430 ev_now_update (EV_A);
2431}
2432
2433void
2434ev_resume (EV_P)
2435{
2436 ev_tstamp mn_prev = mn_now;
2437
2438 ev_now_update (EV_A);
2439 timers_reschedule (EV_A_ mn_now - mn_prev);
2440#if EV_PERIODIC_ENABLE
2441 /* TODO: really do this? */
2442 periodics_reschedule (EV_A);
2443#endif
2444}
2445
1894/*****************************************************************************/ 2446/*****************************************************************************/
2447/* singly-linked list management, used when the expected list length is short */
1895 2448
1896void inline_size 2449inline_size void
1897wlist_add (WL *head, WL elem) 2450wlist_add (WL *head, WL elem)
1898{ 2451{
1899 elem->next = *head; 2452 elem->next = *head;
1900 *head = elem; 2453 *head = elem;
1901} 2454}
1902 2455
1903void inline_size 2456inline_size void
1904wlist_del (WL *head, WL elem) 2457wlist_del (WL *head, WL elem)
1905{ 2458{
1906 while (*head) 2459 while (*head)
1907 { 2460 {
1908 if (*head == elem) 2461 if (expect_true (*head == elem))
1909 { 2462 {
1910 *head = elem->next; 2463 *head = elem->next;
1911 return; 2464 break;
1912 } 2465 }
1913 2466
1914 head = &(*head)->next; 2467 head = &(*head)->next;
1915 } 2468 }
1916} 2469}
1917 2470
1918void inline_speed 2471/* internal, faster, version of ev_clear_pending */
2472inline_speed void
1919clear_pending (EV_P_ W w) 2473clear_pending (EV_P_ W w)
1920{ 2474{
1921 if (w->pending) 2475 if (w->pending)
1922 { 2476 {
1923 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2477 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1924 w->pending = 0; 2478 w->pending = 0;
1925 } 2479 }
1926} 2480}
1927 2481
1928int 2482int
… …
1932 int pending = w_->pending; 2486 int pending = w_->pending;
1933 2487
1934 if (expect_true (pending)) 2488 if (expect_true (pending))
1935 { 2489 {
1936 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2490 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2491 p->w = (W)&pending_w;
1937 w_->pending = 0; 2492 w_->pending = 0;
1938 p->w = 0;
1939 return p->events; 2493 return p->events;
1940 } 2494 }
1941 else 2495 else
1942 return 0; 2496 return 0;
1943} 2497}
1944 2498
1945void inline_size 2499inline_size void
1946pri_adjust (EV_P_ W w) 2500pri_adjust (EV_P_ W w)
1947{ 2501{
1948 int pri = w->priority; 2502 int pri = ev_priority (w);
1949 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2503 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1950 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2504 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1951 w->priority = pri; 2505 ev_set_priority (w, pri);
1952} 2506}
1953 2507
1954void inline_speed 2508inline_speed void
1955ev_start (EV_P_ W w, int active) 2509ev_start (EV_P_ W w, int active)
1956{ 2510{
1957 pri_adjust (EV_A_ w); 2511 pri_adjust (EV_A_ w);
1958 w->active = active; 2512 w->active = active;
1959 ev_ref (EV_A); 2513 ev_ref (EV_A);
1960} 2514}
1961 2515
1962void inline_size 2516inline_size void
1963ev_stop (EV_P_ W w) 2517ev_stop (EV_P_ W w)
1964{ 2518{
1965 ev_unref (EV_A); 2519 ev_unref (EV_A);
1966 w->active = 0; 2520 w->active = 0;
1967} 2521}
… …
1974 int fd = w->fd; 2528 int fd = w->fd;
1975 2529
1976 if (expect_false (ev_is_active (w))) 2530 if (expect_false (ev_is_active (w)))
1977 return; 2531 return;
1978 2532
1979 assert (("ev_io_start called with negative fd", fd >= 0)); 2533 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2534 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2535
2536 EV_FREQUENT_CHECK;
1980 2537
1981 ev_start (EV_A_ (W)w, 1); 2538 ev_start (EV_A_ (W)w, 1);
1982 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2539 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1983 wlist_add (&anfds[fd].head, (WL)w); 2540 wlist_add (&anfds[fd].head, (WL)w);
1984 2541
1985 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2542 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1986 w->events &= ~EV_IOFDSET; 2543 w->events &= ~EV__IOFDSET;
2544
2545 EV_FREQUENT_CHECK;
1987} 2546}
1988 2547
1989void noinline 2548void noinline
1990ev_io_stop (EV_P_ ev_io *w) 2549ev_io_stop (EV_P_ ev_io *w)
1991{ 2550{
1992 clear_pending (EV_A_ (W)w); 2551 clear_pending (EV_A_ (W)w);
1993 if (expect_false (!ev_is_active (w))) 2552 if (expect_false (!ev_is_active (w)))
1994 return; 2553 return;
1995 2554
1996 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2555 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2556
2557 EV_FREQUENT_CHECK;
1997 2558
1998 wlist_del (&anfds[w->fd].head, (WL)w); 2559 wlist_del (&anfds[w->fd].head, (WL)w);
1999 ev_stop (EV_A_ (W)w); 2560 ev_stop (EV_A_ (W)w);
2000 2561
2001 fd_change (EV_A_ w->fd, 1); 2562 fd_change (EV_A_ w->fd, 1);
2563
2564 EV_FREQUENT_CHECK;
2002} 2565}
2003 2566
2004void noinline 2567void noinline
2005ev_timer_start (EV_P_ ev_timer *w) 2568ev_timer_start (EV_P_ ev_timer *w)
2006{ 2569{
2007 if (expect_false (ev_is_active (w))) 2570 if (expect_false (ev_is_active (w)))
2008 return; 2571 return;
2009 2572
2010 ev_at (w) += mn_now; 2573 ev_at (w) += mn_now;
2011 2574
2012 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2575 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2013 2576
2577 EV_FREQUENT_CHECK;
2578
2579 ++timercnt;
2014 ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1); 2580 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2015 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 2581 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
2016 ANHE_w (timers [ev_active (w)]) = (WT)w; 2582 ANHE_w (timers [ev_active (w)]) = (WT)w;
2017 ANHE_at_set (timers [ev_active (w)]); 2583 ANHE_at_cache (timers [ev_active (w)]);
2018 upheap (timers, ev_active (w)); 2584 upheap (timers, ev_active (w));
2019 2585
2586 EV_FREQUENT_CHECK;
2587
2020 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2588 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2021} 2589}
2022 2590
2023void noinline 2591void noinline
2024ev_timer_stop (EV_P_ ev_timer *w) 2592ev_timer_stop (EV_P_ ev_timer *w)
2025{ 2593{
2026 clear_pending (EV_A_ (W)w); 2594 clear_pending (EV_A_ (W)w);
2027 if (expect_false (!ev_is_active (w))) 2595 if (expect_false (!ev_is_active (w)))
2028 return; 2596 return;
2029 2597
2598 EV_FREQUENT_CHECK;
2599
2030 { 2600 {
2031 int active = ev_active (w); 2601 int active = ev_active (w);
2032 2602
2033 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2603 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2034 2604
2605 --timercnt;
2606
2035 if (expect_true (active < timercnt + HEAP0 - 1)) 2607 if (expect_true (active < timercnt + HEAP0))
2036 { 2608 {
2037 timers [active] = timers [timercnt + HEAP0 - 1]; 2609 timers [active] = timers [timercnt + HEAP0];
2038 adjustheap (timers, timercnt, active); 2610 adjustheap (timers, timercnt, active);
2039 } 2611 }
2040
2041 --timercnt;
2042 } 2612 }
2043 2613
2044 ev_at (w) -= mn_now; 2614 ev_at (w) -= mn_now;
2045 2615
2046 ev_stop (EV_A_ (W)w); 2616 ev_stop (EV_A_ (W)w);
2617
2618 EV_FREQUENT_CHECK;
2047} 2619}
2048 2620
2049void noinline 2621void noinline
2050ev_timer_again (EV_P_ ev_timer *w) 2622ev_timer_again (EV_P_ ev_timer *w)
2051{ 2623{
2624 EV_FREQUENT_CHECK;
2625
2052 if (ev_is_active (w)) 2626 if (ev_is_active (w))
2053 { 2627 {
2054 if (w->repeat) 2628 if (w->repeat)
2055 { 2629 {
2056 ev_at (w) = mn_now + w->repeat; 2630 ev_at (w) = mn_now + w->repeat;
2057 ANHE_at_set (timers [ev_active (w)]); 2631 ANHE_at_cache (timers [ev_active (w)]);
2058 adjustheap (timers, timercnt, ev_active (w)); 2632 adjustheap (timers, timercnt, ev_active (w));
2059 } 2633 }
2060 else 2634 else
2061 ev_timer_stop (EV_A_ w); 2635 ev_timer_stop (EV_A_ w);
2062 } 2636 }
2063 else if (w->repeat) 2637 else if (w->repeat)
2064 { 2638 {
2065 ev_at (w) = w->repeat; 2639 ev_at (w) = w->repeat;
2066 ev_timer_start (EV_A_ w); 2640 ev_timer_start (EV_A_ w);
2067 } 2641 }
2642
2643 EV_FREQUENT_CHECK;
2644}
2645
2646ev_tstamp
2647ev_timer_remaining (EV_P_ ev_timer *w)
2648{
2649 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2068} 2650}
2069 2651
2070#if EV_PERIODIC_ENABLE 2652#if EV_PERIODIC_ENABLE
2071void noinline 2653void noinline
2072ev_periodic_start (EV_P_ ev_periodic *w) 2654ev_periodic_start (EV_P_ ev_periodic *w)
… …
2076 2658
2077 if (w->reschedule_cb) 2659 if (w->reschedule_cb)
2078 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2660 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2079 else if (w->interval) 2661 else if (w->interval)
2080 { 2662 {
2081 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2663 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2082 /* this formula differs from the one in periodic_reify because we do not always round up */ 2664 /* this formula differs from the one in periodic_reify because we do not always round up */
2083 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2665 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2084 } 2666 }
2085 else 2667 else
2086 ev_at (w) = w->offset; 2668 ev_at (w) = w->offset;
2087 2669
2670 EV_FREQUENT_CHECK;
2671
2672 ++periodiccnt;
2088 ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1); 2673 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2089 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 2674 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2090 ANHE_w (periodics [ev_active (w)]) = (WT)w; 2675 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2676 ANHE_at_cache (periodics [ev_active (w)]);
2091 upheap (periodics, ev_active (w)); 2677 upheap (periodics, ev_active (w));
2092 2678
2679 EV_FREQUENT_CHECK;
2680
2093 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2681 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2094} 2682}
2095 2683
2096void noinline 2684void noinline
2097ev_periodic_stop (EV_P_ ev_periodic *w) 2685ev_periodic_stop (EV_P_ ev_periodic *w)
2098{ 2686{
2099 clear_pending (EV_A_ (W)w); 2687 clear_pending (EV_A_ (W)w);
2100 if (expect_false (!ev_is_active (w))) 2688 if (expect_false (!ev_is_active (w)))
2101 return; 2689 return;
2102 2690
2691 EV_FREQUENT_CHECK;
2692
2103 { 2693 {
2104 int active = ev_active (w); 2694 int active = ev_active (w);
2105 2695
2106 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2696 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2107 2697
2698 --periodiccnt;
2699
2108 if (expect_true (active < periodiccnt + HEAP0 - 1)) 2700 if (expect_true (active < periodiccnt + HEAP0))
2109 { 2701 {
2110 periodics [active] = periodics [periodiccnt + HEAP0 - 1]; 2702 periodics [active] = periodics [periodiccnt + HEAP0];
2111 adjustheap (periodics, periodiccnt, active); 2703 adjustheap (periodics, periodiccnt, active);
2112 } 2704 }
2113
2114 --periodiccnt;
2115 } 2705 }
2116 2706
2117 ev_stop (EV_A_ (W)w); 2707 ev_stop (EV_A_ (W)w);
2708
2709 EV_FREQUENT_CHECK;
2118} 2710}
2119 2711
2120void noinline 2712void noinline
2121ev_periodic_again (EV_P_ ev_periodic *w) 2713ev_periodic_again (EV_P_ ev_periodic *w)
2122{ 2714{
… …
2131#endif 2723#endif
2132 2724
2133void noinline 2725void noinline
2134ev_signal_start (EV_P_ ev_signal *w) 2726ev_signal_start (EV_P_ ev_signal *w)
2135{ 2727{
2136#if EV_MULTIPLICITY
2137 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2138#endif
2139 if (expect_false (ev_is_active (w))) 2728 if (expect_false (ev_is_active (w)))
2140 return; 2729 return;
2141 2730
2142 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2731 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2143 2732
2144 evpipe_init (EV_A); 2733#if EV_MULTIPLICITY
2734 assert (("libev: a signal must not be attached to two different loops",
2735 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2145 2736
2737 signals [w->signum - 1].loop = EV_A;
2738#endif
2739
2740 EV_FREQUENT_CHECK;
2741
2742#if EV_USE_SIGNALFD
2743 if (sigfd == -2)
2146 { 2744 {
2147#ifndef _WIN32 2745 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2148 sigset_t full, prev; 2746 if (sigfd < 0 && errno == EINVAL)
2149 sigfillset (&full); 2747 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2150 sigprocmask (SIG_SETMASK, &full, &prev);
2151#endif
2152 2748
2153 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2749 if (sigfd >= 0)
2750 {
2751 fd_intern (sigfd); /* doing it twice will not hurt */
2154 2752
2155#ifndef _WIN32 2753 sigemptyset (&sigfd_set);
2156 sigprocmask (SIG_SETMASK, &prev, 0); 2754
2157#endif 2755 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2756 ev_set_priority (&sigfd_w, EV_MAXPRI);
2757 ev_io_start (EV_A_ &sigfd_w);
2758 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2759 }
2158 } 2760 }
2761
2762 if (sigfd >= 0)
2763 {
2764 /* TODO: check .head */
2765 sigaddset (&sigfd_set, w->signum);
2766 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2767
2768 signalfd (sigfd, &sigfd_set, 0);
2769 }
2770#endif
2159 2771
2160 ev_start (EV_A_ (W)w, 1); 2772 ev_start (EV_A_ (W)w, 1);
2161 wlist_add (&signals [w->signum - 1].head, (WL)w); 2773 wlist_add (&signals [w->signum - 1].head, (WL)w);
2162 2774
2163 if (!((WL)w)->next) 2775 if (!((WL)w)->next)
2776# if EV_USE_SIGNALFD
2777 if (sigfd < 0) /*TODO*/
2778# endif
2164 { 2779 {
2165#if _WIN32 2780# ifdef _WIN32
2781 evpipe_init (EV_A);
2782
2166 signal (w->signum, ev_sighandler); 2783 signal (w->signum, ev_sighandler);
2167#else 2784# else
2168 struct sigaction sa; 2785 struct sigaction sa;
2786
2787 evpipe_init (EV_A);
2788
2169 sa.sa_handler = ev_sighandler; 2789 sa.sa_handler = ev_sighandler;
2170 sigfillset (&sa.sa_mask); 2790 sigfillset (&sa.sa_mask);
2171 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2791 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2172 sigaction (w->signum, &sa, 0); 2792 sigaction (w->signum, &sa, 0);
2793
2794 sigemptyset (&sa.sa_mask);
2795 sigaddset (&sa.sa_mask, w->signum);
2796 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2173#endif 2797#endif
2174 } 2798 }
2799
2800 EV_FREQUENT_CHECK;
2175} 2801}
2176 2802
2177void noinline 2803void noinline
2178ev_signal_stop (EV_P_ ev_signal *w) 2804ev_signal_stop (EV_P_ ev_signal *w)
2179{ 2805{
2180 clear_pending (EV_A_ (W)w); 2806 clear_pending (EV_A_ (W)w);
2181 if (expect_false (!ev_is_active (w))) 2807 if (expect_false (!ev_is_active (w)))
2182 return; 2808 return;
2183 2809
2810 EV_FREQUENT_CHECK;
2811
2184 wlist_del (&signals [w->signum - 1].head, (WL)w); 2812 wlist_del (&signals [w->signum - 1].head, (WL)w);
2185 ev_stop (EV_A_ (W)w); 2813 ev_stop (EV_A_ (W)w);
2186 2814
2187 if (!signals [w->signum - 1].head) 2815 if (!signals [w->signum - 1].head)
2816 {
2817#if EV_MULTIPLICITY
2818 signals [w->signum - 1].loop = 0; /* unattach from signal */
2819#endif
2820#if EV_USE_SIGNALFD
2821 if (sigfd >= 0)
2822 {
2823 sigset_t ss;
2824
2825 sigemptyset (&ss);
2826 sigaddset (&ss, w->signum);
2827 sigdelset (&sigfd_set, w->signum);
2828
2829 signalfd (sigfd, &sigfd_set, 0);
2830 sigprocmask (SIG_UNBLOCK, &ss, 0);
2831 }
2832 else
2833#endif
2188 signal (w->signum, SIG_DFL); 2834 signal (w->signum, SIG_DFL);
2835 }
2836
2837 EV_FREQUENT_CHECK;
2189} 2838}
2190 2839
2191void 2840void
2192ev_child_start (EV_P_ ev_child *w) 2841ev_child_start (EV_P_ ev_child *w)
2193{ 2842{
2194#if EV_MULTIPLICITY 2843#if EV_MULTIPLICITY
2195 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2844 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2196#endif 2845#endif
2197 if (expect_false (ev_is_active (w))) 2846 if (expect_false (ev_is_active (w)))
2198 return; 2847 return;
2199 2848
2849 EV_FREQUENT_CHECK;
2850
2200 ev_start (EV_A_ (W)w, 1); 2851 ev_start (EV_A_ (W)w, 1);
2201 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2852 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2853
2854 EV_FREQUENT_CHECK;
2202} 2855}
2203 2856
2204void 2857void
2205ev_child_stop (EV_P_ ev_child *w) 2858ev_child_stop (EV_P_ ev_child *w)
2206{ 2859{
2207 clear_pending (EV_A_ (W)w); 2860 clear_pending (EV_A_ (W)w);
2208 if (expect_false (!ev_is_active (w))) 2861 if (expect_false (!ev_is_active (w)))
2209 return; 2862 return;
2210 2863
2864 EV_FREQUENT_CHECK;
2865
2211 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2866 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2212 ev_stop (EV_A_ (W)w); 2867 ev_stop (EV_A_ (W)w);
2868
2869 EV_FREQUENT_CHECK;
2213} 2870}
2214 2871
2215#if EV_STAT_ENABLE 2872#if EV_STAT_ENABLE
2216 2873
2217# ifdef _WIN32 2874# ifdef _WIN32
2218# undef lstat 2875# undef lstat
2219# define lstat(a,b) _stati64 (a,b) 2876# define lstat(a,b) _stati64 (a,b)
2220# endif 2877# endif
2221 2878
2222#define DEF_STAT_INTERVAL 5.0074891 2879#define DEF_STAT_INTERVAL 5.0074891
2880#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2223#define MIN_STAT_INTERVAL 0.1074891 2881#define MIN_STAT_INTERVAL 0.1074891
2224 2882
2225static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2883static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2226 2884
2227#if EV_USE_INOTIFY 2885#if EV_USE_INOTIFY
2228# define EV_INOTIFY_BUFSIZE 8192 2886
2887/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2888# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2229 2889
2230static void noinline 2890static void noinline
2231infy_add (EV_P_ ev_stat *w) 2891infy_add (EV_P_ ev_stat *w)
2232{ 2892{
2233 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 2893 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2234 2894
2235 if (w->wd < 0) 2895 if (w->wd >= 0)
2896 {
2897 struct statfs sfs;
2898
2899 /* now local changes will be tracked by inotify, but remote changes won't */
2900 /* unless the filesystem is known to be local, we therefore still poll */
2901 /* also do poll on <2.6.25, but with normal frequency */
2902
2903 if (!fs_2625)
2904 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2905 else if (!statfs (w->path, &sfs)
2906 && (sfs.f_type == 0x1373 /* devfs */
2907 || sfs.f_type == 0xEF53 /* ext2/3 */
2908 || sfs.f_type == 0x3153464a /* jfs */
2909 || sfs.f_type == 0x52654973 /* reiser3 */
2910 || sfs.f_type == 0x01021994 /* tempfs */
2911 || sfs.f_type == 0x58465342 /* xfs */))
2912 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2913 else
2914 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2236 { 2915 }
2237 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2916 else
2917 {
2918 /* can't use inotify, continue to stat */
2919 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2238 2920
2239 /* monitor some parent directory for speedup hints */ 2921 /* if path is not there, monitor some parent directory for speedup hints */
2240 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2922 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2241 /* but an efficiency issue only */ 2923 /* but an efficiency issue only */
2242 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2924 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2243 { 2925 {
2244 char path [4096]; 2926 char path [4096];
2245 strcpy (path, w->path); 2927 strcpy (path, w->path);
… …
2249 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2931 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2250 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2932 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2251 2933
2252 char *pend = strrchr (path, '/'); 2934 char *pend = strrchr (path, '/');
2253 2935
2254 if (!pend) 2936 if (!pend || pend == path)
2255 break; /* whoops, no '/', complain to your admin */ 2937 break;
2256 2938
2257 *pend = 0; 2939 *pend = 0;
2258 w->wd = inotify_add_watch (fs_fd, path, mask); 2940 w->wd = inotify_add_watch (fs_fd, path, mask);
2259 } 2941 }
2260 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2942 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2261 } 2943 }
2262 } 2944 }
2263 else
2264 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2265 2945
2266 if (w->wd >= 0) 2946 if (w->wd >= 0)
2267 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2947 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2948
2949 /* now re-arm timer, if required */
2950 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2951 ev_timer_again (EV_A_ &w->timer);
2952 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2268} 2953}
2269 2954
2270static void noinline 2955static void noinline
2271infy_del (EV_P_ ev_stat *w) 2956infy_del (EV_P_ ev_stat *w)
2272{ 2957{
… …
2286 2971
2287static void noinline 2972static void noinline
2288infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2973infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2289{ 2974{
2290 if (slot < 0) 2975 if (slot < 0)
2291 /* overflow, need to check for all hahs slots */ 2976 /* overflow, need to check for all hash slots */
2292 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2977 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2293 infy_wd (EV_A_ slot, wd, ev); 2978 infy_wd (EV_A_ slot, wd, ev);
2294 else 2979 else
2295 { 2980 {
2296 WL w_; 2981 WL w_;
… …
2302 2987
2303 if (w->wd == wd || wd == -1) 2988 if (w->wd == wd || wd == -1)
2304 { 2989 {
2305 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2990 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2306 { 2991 {
2992 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2307 w->wd = -1; 2993 w->wd = -1;
2308 infy_add (EV_A_ w); /* re-add, no matter what */ 2994 infy_add (EV_A_ w); /* re-add, no matter what */
2309 } 2995 }
2310 2996
2311 stat_timer_cb (EV_A_ &w->timer, 0); 2997 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2316 3002
2317static void 3003static void
2318infy_cb (EV_P_ ev_io *w, int revents) 3004infy_cb (EV_P_ ev_io *w, int revents)
2319{ 3005{
2320 char buf [EV_INOTIFY_BUFSIZE]; 3006 char buf [EV_INOTIFY_BUFSIZE];
2321 struct inotify_event *ev = (struct inotify_event *)buf;
2322 int ofs; 3007 int ofs;
2323 int len = read (fs_fd, buf, sizeof (buf)); 3008 int len = read (fs_fd, buf, sizeof (buf));
2324 3009
2325 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3010 for (ofs = 0; ofs < len; )
3011 {
3012 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2326 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3013 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3014 ofs += sizeof (struct inotify_event) + ev->len;
3015 }
2327} 3016}
2328 3017
2329void inline_size 3018inline_size unsigned int
3019ev_linux_version (void)
3020{
3021 struct utsname buf;
3022 unsigned int v;
3023 int i;
3024 char *p = buf.release;
3025
3026 if (uname (&buf))
3027 return 0;
3028
3029 for (i = 3+1; --i; )
3030 {
3031 unsigned int c = 0;
3032
3033 for (;;)
3034 {
3035 if (*p >= '0' && *p <= '9')
3036 c = c * 10 + *p++ - '0';
3037 else
3038 {
3039 p += *p == '.';
3040 break;
3041 }
3042 }
3043
3044 v = (v << 8) | c;
3045 }
3046
3047 return v;
3048}
3049
3050inline_size void
3051ev_check_2625 (EV_P)
3052{
3053 /* kernels < 2.6.25 are borked
3054 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3055 */
3056 if (ev_linux_version () < 0x020619)
3057 return;
3058
3059 fs_2625 = 1;
3060}
3061
3062inline_size int
3063infy_newfd (void)
3064{
3065#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3066 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3067 if (fd >= 0)
3068 return fd;
3069#endif
3070 return inotify_init ();
3071}
3072
3073inline_size void
2330infy_init (EV_P) 3074infy_init (EV_P)
2331{ 3075{
2332 if (fs_fd != -2) 3076 if (fs_fd != -2)
2333 return; 3077 return;
2334 3078
3079 fs_fd = -1;
3080
3081 ev_check_2625 (EV_A);
3082
2335 fs_fd = inotify_init (); 3083 fs_fd = infy_newfd ();
2336 3084
2337 if (fs_fd >= 0) 3085 if (fs_fd >= 0)
2338 { 3086 {
3087 fd_intern (fs_fd);
2339 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3088 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2340 ev_set_priority (&fs_w, EV_MAXPRI); 3089 ev_set_priority (&fs_w, EV_MAXPRI);
2341 ev_io_start (EV_A_ &fs_w); 3090 ev_io_start (EV_A_ &fs_w);
3091 ev_unref (EV_A);
2342 } 3092 }
2343} 3093}
2344 3094
2345void inline_size 3095inline_size void
2346infy_fork (EV_P) 3096infy_fork (EV_P)
2347{ 3097{
2348 int slot; 3098 int slot;
2349 3099
2350 if (fs_fd < 0) 3100 if (fs_fd < 0)
2351 return; 3101 return;
2352 3102
3103 ev_ref (EV_A);
3104 ev_io_stop (EV_A_ &fs_w);
2353 close (fs_fd); 3105 close (fs_fd);
2354 fs_fd = inotify_init (); 3106 fs_fd = infy_newfd ();
3107
3108 if (fs_fd >= 0)
3109 {
3110 fd_intern (fs_fd);
3111 ev_io_set (&fs_w, fs_fd, EV_READ);
3112 ev_io_start (EV_A_ &fs_w);
3113 ev_unref (EV_A);
3114 }
2355 3115
2356 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3116 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2357 { 3117 {
2358 WL w_ = fs_hash [slot].head; 3118 WL w_ = fs_hash [slot].head;
2359 fs_hash [slot].head = 0; 3119 fs_hash [slot].head = 0;
… …
2366 w->wd = -1; 3126 w->wd = -1;
2367 3127
2368 if (fs_fd >= 0) 3128 if (fs_fd >= 0)
2369 infy_add (EV_A_ w); /* re-add, no matter what */ 3129 infy_add (EV_A_ w); /* re-add, no matter what */
2370 else 3130 else
3131 {
3132 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3133 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2371 ev_timer_start (EV_A_ &w->timer); 3134 ev_timer_again (EV_A_ &w->timer);
3135 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3136 }
2372 } 3137 }
2373
2374 } 3138 }
2375} 3139}
2376 3140
3141#endif
3142
3143#ifdef _WIN32
3144# define EV_LSTAT(p,b) _stati64 (p, b)
3145#else
3146# define EV_LSTAT(p,b) lstat (p, b)
2377#endif 3147#endif
2378 3148
2379void 3149void
2380ev_stat_stat (EV_P_ ev_stat *w) 3150ev_stat_stat (EV_P_ ev_stat *w)
2381{ 3151{
… …
2388static void noinline 3158static void noinline
2389stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3159stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2390{ 3160{
2391 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3161 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2392 3162
2393 /* we copy this here each the time so that */ 3163 ev_statdata prev = w->attr;
2394 /* prev has the old value when the callback gets invoked */
2395 w->prev = w->attr;
2396 ev_stat_stat (EV_A_ w); 3164 ev_stat_stat (EV_A_ w);
2397 3165
2398 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3166 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2399 if ( 3167 if (
2400 w->prev.st_dev != w->attr.st_dev 3168 prev.st_dev != w->attr.st_dev
2401 || w->prev.st_ino != w->attr.st_ino 3169 || prev.st_ino != w->attr.st_ino
2402 || w->prev.st_mode != w->attr.st_mode 3170 || prev.st_mode != w->attr.st_mode
2403 || w->prev.st_nlink != w->attr.st_nlink 3171 || prev.st_nlink != w->attr.st_nlink
2404 || w->prev.st_uid != w->attr.st_uid 3172 || prev.st_uid != w->attr.st_uid
2405 || w->prev.st_gid != w->attr.st_gid 3173 || prev.st_gid != w->attr.st_gid
2406 || w->prev.st_rdev != w->attr.st_rdev 3174 || prev.st_rdev != w->attr.st_rdev
2407 || w->prev.st_size != w->attr.st_size 3175 || prev.st_size != w->attr.st_size
2408 || w->prev.st_atime != w->attr.st_atime 3176 || prev.st_atime != w->attr.st_atime
2409 || w->prev.st_mtime != w->attr.st_mtime 3177 || prev.st_mtime != w->attr.st_mtime
2410 || w->prev.st_ctime != w->attr.st_ctime 3178 || prev.st_ctime != w->attr.st_ctime
2411 ) { 3179 ) {
3180 /* we only update w->prev on actual differences */
3181 /* in case we test more often than invoke the callback, */
3182 /* to ensure that prev is always different to attr */
3183 w->prev = prev;
3184
2412 #if EV_USE_INOTIFY 3185 #if EV_USE_INOTIFY
3186 if (fs_fd >= 0)
3187 {
2413 infy_del (EV_A_ w); 3188 infy_del (EV_A_ w);
2414 infy_add (EV_A_ w); 3189 infy_add (EV_A_ w);
2415 ev_stat_stat (EV_A_ w); /* avoid race... */ 3190 ev_stat_stat (EV_A_ w); /* avoid race... */
3191 }
2416 #endif 3192 #endif
2417 3193
2418 ev_feed_event (EV_A_ w, EV_STAT); 3194 ev_feed_event (EV_A_ w, EV_STAT);
2419 } 3195 }
2420} 3196}
… …
2423ev_stat_start (EV_P_ ev_stat *w) 3199ev_stat_start (EV_P_ ev_stat *w)
2424{ 3200{
2425 if (expect_false (ev_is_active (w))) 3201 if (expect_false (ev_is_active (w)))
2426 return; 3202 return;
2427 3203
2428 /* since we use memcmp, we need to clear any padding data etc. */
2429 memset (&w->prev, 0, sizeof (ev_statdata));
2430 memset (&w->attr, 0, sizeof (ev_statdata));
2431
2432 ev_stat_stat (EV_A_ w); 3204 ev_stat_stat (EV_A_ w);
2433 3205
3206 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2434 if (w->interval < MIN_STAT_INTERVAL) 3207 w->interval = MIN_STAT_INTERVAL;
2435 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2436 3208
2437 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3209 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2438 ev_set_priority (&w->timer, ev_priority (w)); 3210 ev_set_priority (&w->timer, ev_priority (w));
2439 3211
2440#if EV_USE_INOTIFY 3212#if EV_USE_INOTIFY
2441 infy_init (EV_A); 3213 infy_init (EV_A);
2442 3214
2443 if (fs_fd >= 0) 3215 if (fs_fd >= 0)
2444 infy_add (EV_A_ w); 3216 infy_add (EV_A_ w);
2445 else 3217 else
2446#endif 3218#endif
3219 {
2447 ev_timer_start (EV_A_ &w->timer); 3220 ev_timer_again (EV_A_ &w->timer);
3221 ev_unref (EV_A);
3222 }
2448 3223
2449 ev_start (EV_A_ (W)w, 1); 3224 ev_start (EV_A_ (W)w, 1);
3225
3226 EV_FREQUENT_CHECK;
2450} 3227}
2451 3228
2452void 3229void
2453ev_stat_stop (EV_P_ ev_stat *w) 3230ev_stat_stop (EV_P_ ev_stat *w)
2454{ 3231{
2455 clear_pending (EV_A_ (W)w); 3232 clear_pending (EV_A_ (W)w);
2456 if (expect_false (!ev_is_active (w))) 3233 if (expect_false (!ev_is_active (w)))
2457 return; 3234 return;
2458 3235
3236 EV_FREQUENT_CHECK;
3237
2459#if EV_USE_INOTIFY 3238#if EV_USE_INOTIFY
2460 infy_del (EV_A_ w); 3239 infy_del (EV_A_ w);
2461#endif 3240#endif
3241
3242 if (ev_is_active (&w->timer))
3243 {
3244 ev_ref (EV_A);
2462 ev_timer_stop (EV_A_ &w->timer); 3245 ev_timer_stop (EV_A_ &w->timer);
3246 }
2463 3247
2464 ev_stop (EV_A_ (W)w); 3248 ev_stop (EV_A_ (W)w);
3249
3250 EV_FREQUENT_CHECK;
2465} 3251}
2466#endif 3252#endif
2467 3253
2468#if EV_IDLE_ENABLE 3254#if EV_IDLE_ENABLE
2469void 3255void
… …
2471{ 3257{
2472 if (expect_false (ev_is_active (w))) 3258 if (expect_false (ev_is_active (w)))
2473 return; 3259 return;
2474 3260
2475 pri_adjust (EV_A_ (W)w); 3261 pri_adjust (EV_A_ (W)w);
3262
3263 EV_FREQUENT_CHECK;
2476 3264
2477 { 3265 {
2478 int active = ++idlecnt [ABSPRI (w)]; 3266 int active = ++idlecnt [ABSPRI (w)];
2479 3267
2480 ++idleall; 3268 ++idleall;
2481 ev_start (EV_A_ (W)w, active); 3269 ev_start (EV_A_ (W)w, active);
2482 3270
2483 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 3271 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2484 idles [ABSPRI (w)][active - 1] = w; 3272 idles [ABSPRI (w)][active - 1] = w;
2485 } 3273 }
3274
3275 EV_FREQUENT_CHECK;
2486} 3276}
2487 3277
2488void 3278void
2489ev_idle_stop (EV_P_ ev_idle *w) 3279ev_idle_stop (EV_P_ ev_idle *w)
2490{ 3280{
2491 clear_pending (EV_A_ (W)w); 3281 clear_pending (EV_A_ (W)w);
2492 if (expect_false (!ev_is_active (w))) 3282 if (expect_false (!ev_is_active (w)))
2493 return; 3283 return;
2494 3284
3285 EV_FREQUENT_CHECK;
3286
2495 { 3287 {
2496 int active = ev_active (w); 3288 int active = ev_active (w);
2497 3289
2498 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3290 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2499 ev_active (idles [ABSPRI (w)][active - 1]) = active; 3291 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2500 3292
2501 ev_stop (EV_A_ (W)w); 3293 ev_stop (EV_A_ (W)w);
2502 --idleall; 3294 --idleall;
2503 } 3295 }
3296
3297 EV_FREQUENT_CHECK;
2504} 3298}
2505#endif 3299#endif
2506 3300
2507void 3301void
2508ev_prepare_start (EV_P_ ev_prepare *w) 3302ev_prepare_start (EV_P_ ev_prepare *w)
2509{ 3303{
2510 if (expect_false (ev_is_active (w))) 3304 if (expect_false (ev_is_active (w)))
2511 return; 3305 return;
3306
3307 EV_FREQUENT_CHECK;
2512 3308
2513 ev_start (EV_A_ (W)w, ++preparecnt); 3309 ev_start (EV_A_ (W)w, ++preparecnt);
2514 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3310 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2515 prepares [preparecnt - 1] = w; 3311 prepares [preparecnt - 1] = w;
3312
3313 EV_FREQUENT_CHECK;
2516} 3314}
2517 3315
2518void 3316void
2519ev_prepare_stop (EV_P_ ev_prepare *w) 3317ev_prepare_stop (EV_P_ ev_prepare *w)
2520{ 3318{
2521 clear_pending (EV_A_ (W)w); 3319 clear_pending (EV_A_ (W)w);
2522 if (expect_false (!ev_is_active (w))) 3320 if (expect_false (!ev_is_active (w)))
2523 return; 3321 return;
2524 3322
3323 EV_FREQUENT_CHECK;
3324
2525 { 3325 {
2526 int active = ev_active (w); 3326 int active = ev_active (w);
2527 3327
2528 prepares [active - 1] = prepares [--preparecnt]; 3328 prepares [active - 1] = prepares [--preparecnt];
2529 ev_active (prepares [active - 1]) = active; 3329 ev_active (prepares [active - 1]) = active;
2530 } 3330 }
2531 3331
2532 ev_stop (EV_A_ (W)w); 3332 ev_stop (EV_A_ (W)w);
3333
3334 EV_FREQUENT_CHECK;
2533} 3335}
2534 3336
2535void 3337void
2536ev_check_start (EV_P_ ev_check *w) 3338ev_check_start (EV_P_ ev_check *w)
2537{ 3339{
2538 if (expect_false (ev_is_active (w))) 3340 if (expect_false (ev_is_active (w)))
2539 return; 3341 return;
3342
3343 EV_FREQUENT_CHECK;
2540 3344
2541 ev_start (EV_A_ (W)w, ++checkcnt); 3345 ev_start (EV_A_ (W)w, ++checkcnt);
2542 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3346 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2543 checks [checkcnt - 1] = w; 3347 checks [checkcnt - 1] = w;
3348
3349 EV_FREQUENT_CHECK;
2544} 3350}
2545 3351
2546void 3352void
2547ev_check_stop (EV_P_ ev_check *w) 3353ev_check_stop (EV_P_ ev_check *w)
2548{ 3354{
2549 clear_pending (EV_A_ (W)w); 3355 clear_pending (EV_A_ (W)w);
2550 if (expect_false (!ev_is_active (w))) 3356 if (expect_false (!ev_is_active (w)))
2551 return; 3357 return;
2552 3358
3359 EV_FREQUENT_CHECK;
3360
2553 { 3361 {
2554 int active = ev_active (w); 3362 int active = ev_active (w);
2555 3363
2556 checks [active - 1] = checks [--checkcnt]; 3364 checks [active - 1] = checks [--checkcnt];
2557 ev_active (checks [active - 1]) = active; 3365 ev_active (checks [active - 1]) = active;
2558 } 3366 }
2559 3367
2560 ev_stop (EV_A_ (W)w); 3368 ev_stop (EV_A_ (W)w);
3369
3370 EV_FREQUENT_CHECK;
2561} 3371}
2562 3372
2563#if EV_EMBED_ENABLE 3373#if EV_EMBED_ENABLE
2564void noinline 3374void noinline
2565ev_embed_sweep (EV_P_ ev_embed *w) 3375ev_embed_sweep (EV_P_ ev_embed *w)
… …
2582embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3392embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2583{ 3393{
2584 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3394 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2585 3395
2586 { 3396 {
2587 struct ev_loop *loop = w->other; 3397 EV_P = w->other;
2588 3398
2589 while (fdchangecnt) 3399 while (fdchangecnt)
2590 { 3400 {
2591 fd_reify (EV_A); 3401 fd_reify (EV_A);
2592 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3402 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2593 } 3403 }
2594 } 3404 }
2595} 3405}
2596 3406
3407static void
3408embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3409{
3410 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3411
3412 ev_embed_stop (EV_A_ w);
3413
3414 {
3415 EV_P = w->other;
3416
3417 ev_loop_fork (EV_A);
3418 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3419 }
3420
3421 ev_embed_start (EV_A_ w);
3422}
3423
2597#if 0 3424#if 0
2598static void 3425static void
2599embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3426embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2600{ 3427{
2601 ev_idle_stop (EV_A_ idle); 3428 ev_idle_stop (EV_A_ idle);
… …
2607{ 3434{
2608 if (expect_false (ev_is_active (w))) 3435 if (expect_false (ev_is_active (w)))
2609 return; 3436 return;
2610 3437
2611 { 3438 {
2612 struct ev_loop *loop = w->other; 3439 EV_P = w->other;
2613 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3440 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2614 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3441 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2615 } 3442 }
3443
3444 EV_FREQUENT_CHECK;
2616 3445
2617 ev_set_priority (&w->io, ev_priority (w)); 3446 ev_set_priority (&w->io, ev_priority (w));
2618 ev_io_start (EV_A_ &w->io); 3447 ev_io_start (EV_A_ &w->io);
2619 3448
2620 ev_prepare_init (&w->prepare, embed_prepare_cb); 3449 ev_prepare_init (&w->prepare, embed_prepare_cb);
2621 ev_set_priority (&w->prepare, EV_MINPRI); 3450 ev_set_priority (&w->prepare, EV_MINPRI);
2622 ev_prepare_start (EV_A_ &w->prepare); 3451 ev_prepare_start (EV_A_ &w->prepare);
2623 3452
3453 ev_fork_init (&w->fork, embed_fork_cb);
3454 ev_fork_start (EV_A_ &w->fork);
3455
2624 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3456 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2625 3457
2626 ev_start (EV_A_ (W)w, 1); 3458 ev_start (EV_A_ (W)w, 1);
3459
3460 EV_FREQUENT_CHECK;
2627} 3461}
2628 3462
2629void 3463void
2630ev_embed_stop (EV_P_ ev_embed *w) 3464ev_embed_stop (EV_P_ ev_embed *w)
2631{ 3465{
2632 clear_pending (EV_A_ (W)w); 3466 clear_pending (EV_A_ (W)w);
2633 if (expect_false (!ev_is_active (w))) 3467 if (expect_false (!ev_is_active (w)))
2634 return; 3468 return;
2635 3469
3470 EV_FREQUENT_CHECK;
3471
2636 ev_io_stop (EV_A_ &w->io); 3472 ev_io_stop (EV_A_ &w->io);
2637 ev_prepare_stop (EV_A_ &w->prepare); 3473 ev_prepare_stop (EV_A_ &w->prepare);
3474 ev_fork_stop (EV_A_ &w->fork);
2638 3475
2639 ev_stop (EV_A_ (W)w); 3476 ev_stop (EV_A_ (W)w);
3477
3478 EV_FREQUENT_CHECK;
2640} 3479}
2641#endif 3480#endif
2642 3481
2643#if EV_FORK_ENABLE 3482#if EV_FORK_ENABLE
2644void 3483void
2645ev_fork_start (EV_P_ ev_fork *w) 3484ev_fork_start (EV_P_ ev_fork *w)
2646{ 3485{
2647 if (expect_false (ev_is_active (w))) 3486 if (expect_false (ev_is_active (w)))
2648 return; 3487 return;
3488
3489 EV_FREQUENT_CHECK;
2649 3490
2650 ev_start (EV_A_ (W)w, ++forkcnt); 3491 ev_start (EV_A_ (W)w, ++forkcnt);
2651 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3492 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2652 forks [forkcnt - 1] = w; 3493 forks [forkcnt - 1] = w;
3494
3495 EV_FREQUENT_CHECK;
2653} 3496}
2654 3497
2655void 3498void
2656ev_fork_stop (EV_P_ ev_fork *w) 3499ev_fork_stop (EV_P_ ev_fork *w)
2657{ 3500{
2658 clear_pending (EV_A_ (W)w); 3501 clear_pending (EV_A_ (W)w);
2659 if (expect_false (!ev_is_active (w))) 3502 if (expect_false (!ev_is_active (w)))
2660 return; 3503 return;
2661 3504
3505 EV_FREQUENT_CHECK;
3506
2662 { 3507 {
2663 int active = ev_active (w); 3508 int active = ev_active (w);
2664 3509
2665 forks [active - 1] = forks [--forkcnt]; 3510 forks [active - 1] = forks [--forkcnt];
2666 ev_active (forks [active - 1]) = active; 3511 ev_active (forks [active - 1]) = active;
2667 } 3512 }
2668 3513
2669 ev_stop (EV_A_ (W)w); 3514 ev_stop (EV_A_ (W)w);
3515
3516 EV_FREQUENT_CHECK;
2670} 3517}
2671#endif 3518#endif
2672 3519
2673#if EV_ASYNC_ENABLE 3520#if EV_ASYNC_ENABLE
2674void 3521void
… …
2676{ 3523{
2677 if (expect_false (ev_is_active (w))) 3524 if (expect_false (ev_is_active (w)))
2678 return; 3525 return;
2679 3526
2680 evpipe_init (EV_A); 3527 evpipe_init (EV_A);
3528
3529 EV_FREQUENT_CHECK;
2681 3530
2682 ev_start (EV_A_ (W)w, ++asynccnt); 3531 ev_start (EV_A_ (W)w, ++asynccnt);
2683 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 3532 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2684 asyncs [asynccnt - 1] = w; 3533 asyncs [asynccnt - 1] = w;
3534
3535 EV_FREQUENT_CHECK;
2685} 3536}
2686 3537
2687void 3538void
2688ev_async_stop (EV_P_ ev_async *w) 3539ev_async_stop (EV_P_ ev_async *w)
2689{ 3540{
2690 clear_pending (EV_A_ (W)w); 3541 clear_pending (EV_A_ (W)w);
2691 if (expect_false (!ev_is_active (w))) 3542 if (expect_false (!ev_is_active (w)))
2692 return; 3543 return;
2693 3544
3545 EV_FREQUENT_CHECK;
3546
2694 { 3547 {
2695 int active = ev_active (w); 3548 int active = ev_active (w);
2696 3549
2697 asyncs [active - 1] = asyncs [--asynccnt]; 3550 asyncs [active - 1] = asyncs [--asynccnt];
2698 ev_active (asyncs [active - 1]) = active; 3551 ev_active (asyncs [active - 1]) = active;
2699 } 3552 }
2700 3553
2701 ev_stop (EV_A_ (W)w); 3554 ev_stop (EV_A_ (W)w);
3555
3556 EV_FREQUENT_CHECK;
2702} 3557}
2703 3558
2704void 3559void
2705ev_async_send (EV_P_ ev_async *w) 3560ev_async_send (EV_P_ ev_async *w)
2706{ 3561{
2707 w->sent = 1; 3562 w->sent = 1;
2708 evpipe_write (EV_A_ &gotasync); 3563 evpipe_write (EV_A_ &async_pending);
2709} 3564}
2710#endif 3565#endif
2711 3566
2712/*****************************************************************************/ 3567/*****************************************************************************/
2713 3568
… …
2723once_cb (EV_P_ struct ev_once *once, int revents) 3578once_cb (EV_P_ struct ev_once *once, int revents)
2724{ 3579{
2725 void (*cb)(int revents, void *arg) = once->cb; 3580 void (*cb)(int revents, void *arg) = once->cb;
2726 void *arg = once->arg; 3581 void *arg = once->arg;
2727 3582
2728 ev_io_stop (EV_A_ &once->io); 3583 ev_io_stop (EV_A_ &once->io);
2729 ev_timer_stop (EV_A_ &once->to); 3584 ev_timer_stop (EV_A_ &once->to);
2730 ev_free (once); 3585 ev_free (once);
2731 3586
2732 cb (revents, arg); 3587 cb (revents, arg);
2733} 3588}
2734 3589
2735static void 3590static void
2736once_cb_io (EV_P_ ev_io *w, int revents) 3591once_cb_io (EV_P_ ev_io *w, int revents)
2737{ 3592{
2738 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3593 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3594
3595 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2739} 3596}
2740 3597
2741static void 3598static void
2742once_cb_to (EV_P_ ev_timer *w, int revents) 3599once_cb_to (EV_P_ ev_timer *w, int revents)
2743{ 3600{
2744 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3601 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3602
3603 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2745} 3604}
2746 3605
2747void 3606void
2748ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3607ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2749{ 3608{
… …
2771 ev_timer_set (&once->to, timeout, 0.); 3630 ev_timer_set (&once->to, timeout, 0.);
2772 ev_timer_start (EV_A_ &once->to); 3631 ev_timer_start (EV_A_ &once->to);
2773 } 3632 }
2774} 3633}
2775 3634
3635/*****************************************************************************/
3636
3637#if EV_WALK_ENABLE
3638void
3639ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3640{
3641 int i, j;
3642 ev_watcher_list *wl, *wn;
3643
3644 if (types & (EV_IO | EV_EMBED))
3645 for (i = 0; i < anfdmax; ++i)
3646 for (wl = anfds [i].head; wl; )
3647 {
3648 wn = wl->next;
3649
3650#if EV_EMBED_ENABLE
3651 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3652 {
3653 if (types & EV_EMBED)
3654 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3655 }
3656 else
3657#endif
3658#if EV_USE_INOTIFY
3659 if (ev_cb ((ev_io *)wl) == infy_cb)
3660 ;
3661 else
3662#endif
3663 if ((ev_io *)wl != &pipe_w)
3664 if (types & EV_IO)
3665 cb (EV_A_ EV_IO, wl);
3666
3667 wl = wn;
3668 }
3669
3670 if (types & (EV_TIMER | EV_STAT))
3671 for (i = timercnt + HEAP0; i-- > HEAP0; )
3672#if EV_STAT_ENABLE
3673 /*TODO: timer is not always active*/
3674 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3675 {
3676 if (types & EV_STAT)
3677 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3678 }
3679 else
3680#endif
3681 if (types & EV_TIMER)
3682 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3683
3684#if EV_PERIODIC_ENABLE
3685 if (types & EV_PERIODIC)
3686 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3687 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3688#endif
3689
3690#if EV_IDLE_ENABLE
3691 if (types & EV_IDLE)
3692 for (j = NUMPRI; i--; )
3693 for (i = idlecnt [j]; i--; )
3694 cb (EV_A_ EV_IDLE, idles [j][i]);
3695#endif
3696
3697#if EV_FORK_ENABLE
3698 if (types & EV_FORK)
3699 for (i = forkcnt; i--; )
3700 if (ev_cb (forks [i]) != embed_fork_cb)
3701 cb (EV_A_ EV_FORK, forks [i]);
3702#endif
3703
3704#if EV_ASYNC_ENABLE
3705 if (types & EV_ASYNC)
3706 for (i = asynccnt; i--; )
3707 cb (EV_A_ EV_ASYNC, asyncs [i]);
3708#endif
3709
3710 if (types & EV_PREPARE)
3711 for (i = preparecnt; i--; )
3712#if EV_EMBED_ENABLE
3713 if (ev_cb (prepares [i]) != embed_prepare_cb)
3714#endif
3715 cb (EV_A_ EV_PREPARE, prepares [i]);
3716
3717 if (types & EV_CHECK)
3718 for (i = checkcnt; i--; )
3719 cb (EV_A_ EV_CHECK, checks [i]);
3720
3721 if (types & EV_SIGNAL)
3722 for (i = 0; i < EV_NSIG - 1; ++i)
3723 for (wl = signals [i].head; wl; )
3724 {
3725 wn = wl->next;
3726 cb (EV_A_ EV_SIGNAL, wl);
3727 wl = wn;
3728 }
3729
3730 if (types & EV_CHILD)
3731 for (i = EV_PID_HASHSIZE; i--; )
3732 for (wl = childs [i]; wl; )
3733 {
3734 wn = wl->next;
3735 cb (EV_A_ EV_CHILD, wl);
3736 wl = wn;
3737 }
3738/* EV_STAT 0x00001000 /* stat data changed */
3739/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3740}
3741#endif
3742
2776#if EV_MULTIPLICITY 3743#if EV_MULTIPLICITY
2777 #include "ev_wrap.h" 3744 #include "ev_wrap.h"
2778#endif 3745#endif
2779 3746
2780#ifdef __cplusplus 3747#ifdef __cplusplus

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