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Comparing libev/ev.c (file contents):
Revision 1.249 by root, Wed May 21 23:30:52 2008 UTC vs.
Revision 1.316 by root, Fri Sep 18 21:02:12 2009 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 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
… …
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>
136#include <fcntl.h> 158#include <fcntl.h>
… …
154#ifndef _WIN32 176#ifndef _WIN32
155# include <sys/time.h> 177# include <sys/time.h>
156# include <sys/wait.h> 178# include <sys/wait.h>
157# include <unistd.h> 179# include <unistd.h>
158#else 180#else
181# include <io.h>
159# define WIN32_LEAN_AND_MEAN 182# define WIN32_LEAN_AND_MEAN
160# include <windows.h> 183# include <windows.h>
161# ifndef EV_SELECT_IS_WINSOCKET 184# ifndef EV_SELECT_IS_WINSOCKET
162# define EV_SELECT_IS_WINSOCKET 1 185# define EV_SELECT_IS_WINSOCKET 1
163# endif 186# endif
164#endif 187#endif
165 188
166/* this block tries to deduce configuration from header-defined symbols and defaults */ 189/* this block tries to deduce configuration from header-defined symbols and defaults */
167 190
191/* try to deduce the maximum number of signals on this platform */
192#if defined (EV_NSIG)
193/* use what's provided */
194#elif defined (NSIG)
195# define EV_NSIG (NSIG)
196#elif defined(_NSIG)
197# define EV_NSIG (_NSIG)
198#elif defined (SIGMAX)
199# define EV_NSIG (SIGMAX+1)
200#elif defined (SIG_MAX)
201# define EV_NSIG (SIG_MAX+1)
202#elif defined (_SIG_MAX)
203# define EV_NSIG (_SIG_MAX+1)
204#elif defined (MAXSIG)
205# define EV_NSIG (MAXSIG+1)
206#elif defined (MAX_SIG)
207# define EV_NSIG (MAX_SIG+1)
208#elif defined (SIGARRAYSIZE)
209# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
210#elif defined (_sys_nsig)
211# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
212#else
213# error "unable to find value for NSIG, please report"
214/* to make it compile regardless, just remove the above line */
215# define EV_NSIG 65
216#endif
217
218#ifndef EV_USE_CLOCK_SYSCALL
219# if __linux && __GLIBC__ >= 2
220# define EV_USE_CLOCK_SYSCALL 1
221# else
222# define EV_USE_CLOCK_SYSCALL 0
223# endif
224#endif
225
168#ifndef EV_USE_MONOTONIC 226#ifndef EV_USE_MONOTONIC
227# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
228# define EV_USE_MONOTONIC 1
229# else
169# define EV_USE_MONOTONIC 0 230# define EV_USE_MONOTONIC 0
231# endif
170#endif 232#endif
171 233
172#ifndef EV_USE_REALTIME 234#ifndef EV_USE_REALTIME
173# define EV_USE_REALTIME 0 235# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174#endif 236#endif
175 237
176#ifndef EV_USE_NANOSLEEP 238#ifndef EV_USE_NANOSLEEP
239# if _POSIX_C_SOURCE >= 199309L
240# define EV_USE_NANOSLEEP 1
241# else
177# define EV_USE_NANOSLEEP 0 242# define EV_USE_NANOSLEEP 0
243# endif
178#endif 244#endif
179 245
180#ifndef EV_USE_SELECT 246#ifndef EV_USE_SELECT
181# define EV_USE_SELECT 1 247# define EV_USE_SELECT 1
182#endif 248#endif
… …
235# else 301# else
236# define EV_USE_EVENTFD 0 302# define EV_USE_EVENTFD 0
237# endif 303# endif
238#endif 304#endif
239 305
306#ifndef EV_USE_SIGNALFD
307# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
308# define EV_USE_SIGNALFD 1
309# else
310# define EV_USE_SIGNALFD 0
311# endif
312#endif
313
240#if 0 /* debugging */ 314#if 0 /* debugging */
241# define EV_VERIFY 1 315# define EV_VERIFY 3
242# define EV_USE_4HEAP 1 316# define EV_USE_4HEAP 1
243# define EV_HEAP_CACHE_AT 1 317# define EV_HEAP_CACHE_AT 1
244#endif 318#endif
245 319
320#ifndef EV_VERIFY
321# define EV_VERIFY !EV_MINIMAL
322#endif
323
246#ifndef EV_USE_4HEAP 324#ifndef EV_USE_4HEAP
247# define EV_USE_4HEAP !EV_MINIMAL 325# define EV_USE_4HEAP !EV_MINIMAL
248#endif 326#endif
249 327
250#ifndef EV_HEAP_CACHE_AT 328#ifndef EV_HEAP_CACHE_AT
251# define EV_HEAP_CACHE_AT !EV_MINIMAL 329# define EV_HEAP_CACHE_AT !EV_MINIMAL
330#endif
331
332/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
333/* which makes programs even slower. might work on other unices, too. */
334#if EV_USE_CLOCK_SYSCALL
335# include <syscall.h>
336# ifdef SYS_clock_gettime
337# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
338# undef EV_USE_MONOTONIC
339# define EV_USE_MONOTONIC 1
340# else
341# undef EV_USE_CLOCK_SYSCALL
342# define EV_USE_CLOCK_SYSCALL 0
343# endif
252#endif 344#endif
253 345
254/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 346/* this block fixes any misconfiguration where we know we run into trouble otherwise */
255 347
256#ifndef CLOCK_MONOTONIC 348#ifndef CLOCK_MONOTONIC
… …
273# include <sys/select.h> 365# include <sys/select.h>
274# endif 366# endif
275#endif 367#endif
276 368
277#if EV_USE_INOTIFY 369#if EV_USE_INOTIFY
370# include <sys/utsname.h>
371# include <sys/statfs.h>
278# include <sys/inotify.h> 372# include <sys/inotify.h>
373/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
374# ifndef IN_DONT_FOLLOW
375# undef EV_USE_INOTIFY
376# define EV_USE_INOTIFY 0
377# endif
279#endif 378#endif
280 379
281#if EV_SELECT_IS_WINSOCKET 380#if EV_SELECT_IS_WINSOCKET
282# include <winsock.h> 381# include <winsock.h>
283#endif 382#endif
284 383
285#if EV_USE_EVENTFD 384#if EV_USE_EVENTFD
286/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 385/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
287# include <stdint.h> 386# include <stdint.h>
387# ifndef EFD_NONBLOCK
388# define EFD_NONBLOCK O_NONBLOCK
389# endif
390# ifndef EFD_CLOEXEC
391# ifdef O_CLOEXEC
392# define EFD_CLOEXEC O_CLOEXEC
393# else
394# define EFD_CLOEXEC 02000000
395# endif
396# endif
288# ifdef __cplusplus 397# ifdef __cplusplus
289extern "C" { 398extern "C" {
290# endif 399# endif
291int eventfd (unsigned int initval, int flags); 400int eventfd (unsigned int initval, int flags);
292# ifdef __cplusplus 401# ifdef __cplusplus
293} 402}
294# endif 403# endif
295#endif 404#endif
296 405
406#if EV_USE_SIGNALFD
407/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
408# include <stdint.h>
409# ifndef SFD_NONBLOCK
410# define SFD_NONBLOCK O_NONBLOCK
411# endif
412# ifndef SFD_CLOEXEC
413# ifdef O_CLOEXEC
414# define SFD_CLOEXEC O_CLOEXEC
415# else
416# define SFD_CLOEXEC 02000000
417# endif
418# endif
419# ifdef __cplusplus
420extern "C" {
421# endif
422int signalfd (int fd, const sigset_t *mask, int flags);
423
424struct signalfd_siginfo
425{
426 uint32_t ssi_signo;
427 char pad[128 - sizeof (uint32_t)];
428};
429# ifdef __cplusplus
430}
431# endif
432#endif
433
434
297/**/ 435/**/
298 436
299/* EV_VERIFY: enable internal consistency checks
300 * undefined or zero: no verification done or available
301 * 1 or higher: ev_loop_verify function available
302 * 2 or higher: ev_loop_verify is called frequently
303 */
304#if EV_VERIFY >= 1 437#if EV_VERIFY >= 3
305# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 438# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
306#else 439#else
307# define EV_FREQUENT_CHECK do { } while (0) 440# define EV_FREQUENT_CHECK do { } while (0)
308#endif 441#endif
309 442
… …
317 */ 450 */
318#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 451#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
319 452
320#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 453#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
321#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 454#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
322/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
323 455
324#if __GNUC__ >= 4 456#if __GNUC__ >= 4
325# define expect(expr,value) __builtin_expect ((expr),(value)) 457# define expect(expr,value) __builtin_expect ((expr),(value))
326# define noinline __attribute__ ((noinline)) 458# define noinline __attribute__ ((noinline))
327#else 459#else
… …
340# define inline_speed static noinline 472# define inline_speed static noinline
341#else 473#else
342# define inline_speed static inline 474# define inline_speed static inline
343#endif 475#endif
344 476
345#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 477#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
478
479#if EV_MINPRI == EV_MAXPRI
480# define ABSPRI(w) (((W)w), 0)
481#else
346#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 482# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
483#endif
347 484
348#define EMPTY /* required for microsofts broken pseudo-c compiler */ 485#define EMPTY /* required for microsofts broken pseudo-c compiler */
349#define EMPTY2(a,b) /* used to suppress some warnings */ 486#define EMPTY2(a,b) /* used to suppress some warnings */
350 487
351typedef ev_watcher *W; 488typedef ev_watcher *W;
… …
353typedef ev_watcher_time *WT; 490typedef ev_watcher_time *WT;
354 491
355#define ev_active(w) ((W)(w))->active 492#define ev_active(w) ((W)(w))->active
356#define ev_at(w) ((WT)(w))->at 493#define ev_at(w) ((WT)(w))->at
357 494
358#if EV_USE_MONOTONIC 495#if EV_USE_REALTIME
359/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 496/* sig_atomic_t is used to avoid per-thread variables or locking but still */
360/* giving it a reasonably high chance of working on typical architetcures */ 497/* giving it a reasonably high chance of working on typical architetcures */
498static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
499#endif
500
501#if EV_USE_MONOTONIC
361static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 502static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
503#endif
504
505#ifndef EV_FD_TO_WIN32_HANDLE
506# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
507#endif
508#ifndef EV_WIN32_HANDLE_TO_FD
509# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0)
510#endif
511#ifndef EV_WIN32_CLOSE_FD
512# define EV_WIN32_CLOSE_FD(fd) close (fd)
362#endif 513#endif
363 514
364#ifdef _WIN32 515#ifdef _WIN32
365# include "ev_win32.c" 516# include "ev_win32.c"
366#endif 517#endif
… …
374{ 525{
375 syserr_cb = cb; 526 syserr_cb = cb;
376} 527}
377 528
378static void noinline 529static void noinline
379syserr (const char *msg) 530ev_syserr (const char *msg)
380{ 531{
381 if (!msg) 532 if (!msg)
382 msg = "(libev) system error"; 533 msg = "(libev) system error";
383 534
384 if (syserr_cb) 535 if (syserr_cb)
… …
430#define ev_malloc(size) ev_realloc (0, (size)) 581#define ev_malloc(size) ev_realloc (0, (size))
431#define ev_free(ptr) ev_realloc ((ptr), 0) 582#define ev_free(ptr) ev_realloc ((ptr), 0)
432 583
433/*****************************************************************************/ 584/*****************************************************************************/
434 585
586/* set in reify when reification needed */
587#define EV_ANFD_REIFY 1
588
589/* file descriptor info structure */
435typedef struct 590typedef struct
436{ 591{
437 WL head; 592 WL head;
438 unsigned char events; 593 unsigned char events; /* the events watched for */
594 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
595 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
439 unsigned char reify; 596 unsigned char unused;
597#if EV_USE_EPOLL
598 unsigned int egen; /* generation counter to counter epoll bugs */
599#endif
440#if EV_SELECT_IS_WINSOCKET 600#if EV_SELECT_IS_WINSOCKET
441 SOCKET handle; 601 SOCKET handle;
442#endif 602#endif
443} ANFD; 603} ANFD;
444 604
605/* stores the pending event set for a given watcher */
445typedef struct 606typedef struct
446{ 607{
447 W w; 608 W w;
448 int events; 609 int events; /* the pending event set for the given watcher */
449} ANPENDING; 610} ANPENDING;
450 611
451#if EV_USE_INOTIFY 612#if EV_USE_INOTIFY
452/* hash table entry per inotify-id */ 613/* hash table entry per inotify-id */
453typedef struct 614typedef struct
… …
456} ANFS; 617} ANFS;
457#endif 618#endif
458 619
459/* Heap Entry */ 620/* Heap Entry */
460#if EV_HEAP_CACHE_AT 621#if EV_HEAP_CACHE_AT
622 /* a heap element */
461 typedef struct { 623 typedef struct {
462 ev_tstamp at; 624 ev_tstamp at;
463 WT w; 625 WT w;
464 } ANHE; 626 } ANHE;
465 627
466 #define ANHE_w(he) (he).w /* access watcher, read-write */ 628 #define ANHE_w(he) (he).w /* access watcher, read-write */
467 #define ANHE_at(he) (he).at /* access cached at, read-only */ 629 #define ANHE_at(he) (he).at /* access cached at, read-only */
468 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 630 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
469#else 631#else
632 /* a heap element */
470 typedef WT ANHE; 633 typedef WT ANHE;
471 634
472 #define ANHE_w(he) (he) 635 #define ANHE_w(he) (he)
473 #define ANHE_at(he) (he)->at 636 #define ANHE_at(he) (he)->at
474 #define ANHE_at_cache(he) 637 #define ANHE_at_cache(he)
… …
498 661
499 static int ev_default_loop_ptr; 662 static int ev_default_loop_ptr;
500 663
501#endif 664#endif
502 665
666#if EV_MINIMAL < 2
667# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
668# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
669# define EV_INVOKE_PENDING invoke_cb (EV_A)
670#else
671# define EV_RELEASE_CB (void)0
672# define EV_ACQUIRE_CB (void)0
673# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
674#endif
675
676#define EVUNLOOP_RECURSE 0x80
677
503/*****************************************************************************/ 678/*****************************************************************************/
504 679
680#ifndef EV_HAVE_EV_TIME
505ev_tstamp 681ev_tstamp
506ev_time (void) 682ev_time (void)
507{ 683{
508#if EV_USE_REALTIME 684#if EV_USE_REALTIME
685 if (expect_true (have_realtime))
686 {
509 struct timespec ts; 687 struct timespec ts;
510 clock_gettime (CLOCK_REALTIME, &ts); 688 clock_gettime (CLOCK_REALTIME, &ts);
511 return ts.tv_sec + ts.tv_nsec * 1e-9; 689 return ts.tv_sec + ts.tv_nsec * 1e-9;
512#else 690 }
691#endif
692
513 struct timeval tv; 693 struct timeval tv;
514 gettimeofday (&tv, 0); 694 gettimeofday (&tv, 0);
515 return tv.tv_sec + tv.tv_usec * 1e-6; 695 return tv.tv_sec + tv.tv_usec * 1e-6;
516#endif
517} 696}
697#endif
518 698
519ev_tstamp inline_size 699inline_size ev_tstamp
520get_clock (void) 700get_clock (void)
521{ 701{
522#if EV_USE_MONOTONIC 702#if EV_USE_MONOTONIC
523 if (expect_true (have_monotonic)) 703 if (expect_true (have_monotonic))
524 { 704 {
… …
557 struct timeval tv; 737 struct timeval tv;
558 738
559 tv.tv_sec = (time_t)delay; 739 tv.tv_sec = (time_t)delay;
560 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 740 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
561 741
742 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
743 /* something not guaranteed by newer posix versions, but guaranteed */
744 /* by older ones */
562 select (0, 0, 0, 0, &tv); 745 select (0, 0, 0, 0, &tv);
563#endif 746#endif
564 } 747 }
565} 748}
566 749
567/*****************************************************************************/ 750/*****************************************************************************/
568 751
569#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 752#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
570 753
571int inline_size 754/* find a suitable new size for the given array, */
755/* hopefully by rounding to a ncie-to-malloc size */
756inline_size int
572array_nextsize (int elem, int cur, int cnt) 757array_nextsize (int elem, int cur, int cnt)
573{ 758{
574 int ncur = cur + 1; 759 int ncur = cur + 1;
575 760
576 do 761 do
… …
593array_realloc (int elem, void *base, int *cur, int cnt) 778array_realloc (int elem, void *base, int *cur, int cnt)
594{ 779{
595 *cur = array_nextsize (elem, *cur, cnt); 780 *cur = array_nextsize (elem, *cur, cnt);
596 return ev_realloc (base, elem * *cur); 781 return ev_realloc (base, elem * *cur);
597} 782}
783
784#define array_init_zero(base,count) \
785 memset ((void *)(base), 0, sizeof (*(base)) * (count))
598 786
599#define array_needsize(type,base,cur,cnt,init) \ 787#define array_needsize(type,base,cur,cnt,init) \
600 if (expect_false ((cnt) > (cur))) \ 788 if (expect_false ((cnt) > (cur))) \
601 { \ 789 { \
602 int ocur_ = (cur); \ 790 int ocur_ = (cur); \
… …
614 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 802 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
615 } 803 }
616#endif 804#endif
617 805
618#define array_free(stem, idx) \ 806#define array_free(stem, idx) \
619 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 807 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
620 808
621/*****************************************************************************/ 809/*****************************************************************************/
810
811/* dummy callback for pending events */
812static void noinline
813pendingcb (EV_P_ ev_prepare *w, int revents)
814{
815}
622 816
623void noinline 817void noinline
624ev_feed_event (EV_P_ void *w, int revents) 818ev_feed_event (EV_P_ void *w, int revents)
625{ 819{
626 W w_ = (W)w; 820 W w_ = (W)w;
… …
635 pendings [pri][w_->pending - 1].w = w_; 829 pendings [pri][w_->pending - 1].w = w_;
636 pendings [pri][w_->pending - 1].events = revents; 830 pendings [pri][w_->pending - 1].events = revents;
637 } 831 }
638} 832}
639 833
640void inline_speed 834inline_speed void
835feed_reverse (EV_P_ W w)
836{
837 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
838 rfeeds [rfeedcnt++] = w;
839}
840
841inline_size void
842feed_reverse_done (EV_P_ int revents)
843{
844 do
845 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
846 while (rfeedcnt);
847}
848
849inline_speed void
641queue_events (EV_P_ W *events, int eventcnt, int type) 850queue_events (EV_P_ W *events, int eventcnt, int type)
642{ 851{
643 int i; 852 int i;
644 853
645 for (i = 0; i < eventcnt; ++i) 854 for (i = 0; i < eventcnt; ++i)
646 ev_feed_event (EV_A_ events [i], type); 855 ev_feed_event (EV_A_ events [i], type);
647} 856}
648 857
649/*****************************************************************************/ 858/*****************************************************************************/
650 859
651void inline_size 860inline_speed void
652anfds_init (ANFD *base, int count)
653{
654 while (count--)
655 {
656 base->head = 0;
657 base->events = EV_NONE;
658 base->reify = 0;
659
660 ++base;
661 }
662}
663
664void inline_speed
665fd_event (EV_P_ int fd, int revents) 861fd_event_nc (EV_P_ int fd, int revents)
666{ 862{
667 ANFD *anfd = anfds + fd; 863 ANFD *anfd = anfds + fd;
668 ev_io *w; 864 ev_io *w;
669 865
670 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 866 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
674 if (ev) 870 if (ev)
675 ev_feed_event (EV_A_ (W)w, ev); 871 ev_feed_event (EV_A_ (W)w, ev);
676 } 872 }
677} 873}
678 874
875/* do not submit kernel events for fds that have reify set */
876/* because that means they changed while we were polling for new events */
877inline_speed void
878fd_event (EV_P_ int fd, int revents)
879{
880 ANFD *anfd = anfds + fd;
881
882 if (expect_true (!anfd->reify))
883 fd_event_nc (EV_A_ fd, revents);
884}
885
679void 886void
680ev_feed_fd_event (EV_P_ int fd, int revents) 887ev_feed_fd_event (EV_P_ int fd, int revents)
681{ 888{
682 if (fd >= 0 && fd < anfdmax) 889 if (fd >= 0 && fd < anfdmax)
683 fd_event (EV_A_ fd, revents); 890 fd_event_nc (EV_A_ fd, revents);
684} 891}
685 892
686void inline_size 893/* make sure the external fd watch events are in-sync */
894/* with the kernel/libev internal state */
895inline_size void
687fd_reify (EV_P) 896fd_reify (EV_P)
688{ 897{
689 int i; 898 int i;
690 899
691 for (i = 0; i < fdchangecnt; ++i) 900 for (i = 0; i < fdchangecnt; ++i)
… …
700 events |= (unsigned char)w->events; 909 events |= (unsigned char)w->events;
701 910
702#if EV_SELECT_IS_WINSOCKET 911#if EV_SELECT_IS_WINSOCKET
703 if (events) 912 if (events)
704 { 913 {
705 unsigned long argp; 914 unsigned long arg;
706 #ifdef EV_FD_TO_WIN32_HANDLE
707 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 915 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
708 #else
709 anfd->handle = _get_osfhandle (fd);
710 #endif
711 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 916 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
712 } 917 }
713#endif 918#endif
714 919
715 { 920 {
716 unsigned char o_events = anfd->events; 921 unsigned char o_events = anfd->events;
717 unsigned char o_reify = anfd->reify; 922 unsigned char o_reify = anfd->reify;
718 923
719 anfd->reify = 0; 924 anfd->reify = 0;
720 anfd->events = events; 925 anfd->events = events;
721 926
722 if (o_events != events || o_reify & EV_IOFDSET) 927 if (o_events != events || o_reify & EV__IOFDSET)
723 backend_modify (EV_A_ fd, o_events, events); 928 backend_modify (EV_A_ fd, o_events, events);
724 } 929 }
725 } 930 }
726 931
727 fdchangecnt = 0; 932 fdchangecnt = 0;
728} 933}
729 934
730void inline_size 935/* something about the given fd changed */
936inline_size void
731fd_change (EV_P_ int fd, int flags) 937fd_change (EV_P_ int fd, int flags)
732{ 938{
733 unsigned char reify = anfds [fd].reify; 939 unsigned char reify = anfds [fd].reify;
734 anfds [fd].reify |= flags; 940 anfds [fd].reify |= flags;
735 941
… …
739 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 945 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
740 fdchanges [fdchangecnt - 1] = fd; 946 fdchanges [fdchangecnt - 1] = fd;
741 } 947 }
742} 948}
743 949
744void inline_speed 950/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
951inline_speed void
745fd_kill (EV_P_ int fd) 952fd_kill (EV_P_ int fd)
746{ 953{
747 ev_io *w; 954 ev_io *w;
748 955
749 while ((w = (ev_io *)anfds [fd].head)) 956 while ((w = (ev_io *)anfds [fd].head))
… …
751 ev_io_stop (EV_A_ w); 958 ev_io_stop (EV_A_ w);
752 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 959 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
753 } 960 }
754} 961}
755 962
756int inline_size 963/* check whether the given fd is atcually valid, for error recovery */
964inline_size int
757fd_valid (int fd) 965fd_valid (int fd)
758{ 966{
759#ifdef _WIN32 967#ifdef _WIN32
760 return _get_osfhandle (fd) != -1; 968 return _get_osfhandle (fd) != -1;
761#else 969#else
… …
769{ 977{
770 int fd; 978 int fd;
771 979
772 for (fd = 0; fd < anfdmax; ++fd) 980 for (fd = 0; fd < anfdmax; ++fd)
773 if (anfds [fd].events) 981 if (anfds [fd].events)
774 if (!fd_valid (fd) == -1 && errno == EBADF) 982 if (!fd_valid (fd) && errno == EBADF)
775 fd_kill (EV_A_ fd); 983 fd_kill (EV_A_ fd);
776} 984}
777 985
778/* called on ENOMEM in select/poll to kill some fds and retry */ 986/* called on ENOMEM in select/poll to kill some fds and retry */
779static void noinline 987static void noinline
… …
783 991
784 for (fd = anfdmax; fd--; ) 992 for (fd = anfdmax; fd--; )
785 if (anfds [fd].events) 993 if (anfds [fd].events)
786 { 994 {
787 fd_kill (EV_A_ fd); 995 fd_kill (EV_A_ fd);
788 return; 996 break;
789 } 997 }
790} 998}
791 999
792/* usually called after fork if backend needs to re-arm all fds from scratch */ 1000/* usually called after fork if backend needs to re-arm all fds from scratch */
793static void noinline 1001static void noinline
… …
797 1005
798 for (fd = 0; fd < anfdmax; ++fd) 1006 for (fd = 0; fd < anfdmax; ++fd)
799 if (anfds [fd].events) 1007 if (anfds [fd].events)
800 { 1008 {
801 anfds [fd].events = 0; 1009 anfds [fd].events = 0;
1010 anfds [fd].emask = 0;
802 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1011 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
803 } 1012 }
804} 1013}
805 1014
806/*****************************************************************************/ 1015/*****************************************************************************/
807 1016
… …
823#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1032#define HEAP0 (DHEAP - 1) /* index of first element in heap */
824#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1033#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
825#define UPHEAP_DONE(p,k) ((p) == (k)) 1034#define UPHEAP_DONE(p,k) ((p) == (k))
826 1035
827/* away from the root */ 1036/* away from the root */
828void inline_speed 1037inline_speed void
829downheap (ANHE *heap, int N, int k) 1038downheap (ANHE *heap, int N, int k)
830{ 1039{
831 ANHE he = heap [k]; 1040 ANHE he = heap [k];
832 ANHE *E = heap + N + HEAP0; 1041 ANHE *E = heap + N + HEAP0;
833 1042
… …
873#define HEAP0 1 1082#define HEAP0 1
874#define HPARENT(k) ((k) >> 1) 1083#define HPARENT(k) ((k) >> 1)
875#define UPHEAP_DONE(p,k) (!(p)) 1084#define UPHEAP_DONE(p,k) (!(p))
876 1085
877/* away from the root */ 1086/* away from the root */
878void inline_speed 1087inline_speed void
879downheap (ANHE *heap, int N, int k) 1088downheap (ANHE *heap, int N, int k)
880{ 1089{
881 ANHE he = heap [k]; 1090 ANHE he = heap [k];
882 1091
883 for (;;) 1092 for (;;)
884 { 1093 {
885 int c = k << 1; 1094 int c = k << 1;
886 1095
887 if (c > N + HEAP0 - 1) 1096 if (c >= N + HEAP0)
888 break; 1097 break;
889 1098
890 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1099 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
891 ? 1 : 0; 1100 ? 1 : 0;
892 1101
… …
903 ev_active (ANHE_w (he)) = k; 1112 ev_active (ANHE_w (he)) = k;
904} 1113}
905#endif 1114#endif
906 1115
907/* towards the root */ 1116/* towards the root */
908void inline_speed 1117inline_speed void
909upheap (ANHE *heap, int k) 1118upheap (ANHE *heap, int k)
910{ 1119{
911 ANHE he = heap [k]; 1120 ANHE he = heap [k];
912 1121
913 for (;;) 1122 for (;;)
… …
924 1133
925 heap [k] = he; 1134 heap [k] = he;
926 ev_active (ANHE_w (he)) = k; 1135 ev_active (ANHE_w (he)) = k;
927} 1136}
928 1137
929void inline_size 1138/* move an element suitably so it is in a correct place */
1139inline_size void
930adjustheap (ANHE *heap, int N, int k) 1140adjustheap (ANHE *heap, int N, int k)
931{ 1141{
932 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1142 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
933 upheap (heap, k); 1143 upheap (heap, k);
934 else 1144 else
935 downheap (heap, N, k); 1145 downheap (heap, N, k);
936} 1146}
937 1147
938/* rebuild the heap: this function is used only once and executed rarely */ 1148/* rebuild the heap: this function is used only once and executed rarely */
939void inline_size 1149inline_size void
940reheap (ANHE *heap, int N) 1150reheap (ANHE *heap, int N)
941{ 1151{
942 int i; 1152 int i;
1153
943 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1154 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
944 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */ 1155 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
945 for (i = 0; i < N; ++i) 1156 for (i = 0; i < N; ++i)
946 upheap (heap, i + HEAP0); 1157 upheap (heap, i + HEAP0);
947} 1158}
948 1159
949#if EV_VERIFY
950static void
951checkheap (ANHE *heap, int N)
952{
953 int i;
954
955 for (i = HEAP0; i < N + HEAP0; ++i)
956 {
957 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
958 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
959 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
960 }
961}
962#endif
963
964/*****************************************************************************/ 1160/*****************************************************************************/
965 1161
1162/* associate signal watchers to a signal signal */
966typedef struct 1163typedef struct
967{ 1164{
1165 EV_ATOMIC_T pending;
1166#if EV_MULTIPLICITY
1167 EV_P;
1168#endif
968 WL head; 1169 WL head;
969 EV_ATOMIC_T gotsig;
970} ANSIG; 1170} ANSIG;
971 1171
972static ANSIG *signals; 1172static ANSIG signals [EV_NSIG - 1];
973static int signalmax;
974
975static EV_ATOMIC_T gotsig;
976
977void inline_size
978signals_init (ANSIG *base, int count)
979{
980 while (count--)
981 {
982 base->head = 0;
983 base->gotsig = 0;
984
985 ++base;
986 }
987}
988 1173
989/*****************************************************************************/ 1174/*****************************************************************************/
990 1175
991void inline_speed 1176/* used to prepare libev internal fd's */
1177/* this is not fork-safe */
1178inline_speed void
992fd_intern (int fd) 1179fd_intern (int fd)
993{ 1180{
994#ifdef _WIN32 1181#ifdef _WIN32
995 int arg = 1; 1182 unsigned long arg = 1;
996 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1183 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
997#else 1184#else
998 fcntl (fd, F_SETFD, FD_CLOEXEC); 1185 fcntl (fd, F_SETFD, FD_CLOEXEC);
999 fcntl (fd, F_SETFL, O_NONBLOCK); 1186 fcntl (fd, F_SETFL, O_NONBLOCK);
1000#endif 1187#endif
1001} 1188}
1002 1189
1003static void noinline 1190static void noinline
1004evpipe_init (EV_P) 1191evpipe_init (EV_P)
1005{ 1192{
1006 if (!ev_is_active (&pipeev)) 1193 if (!ev_is_active (&pipe_w))
1007 { 1194 {
1008#if EV_USE_EVENTFD 1195#if EV_USE_EVENTFD
1196 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1197 if (evfd < 0 && errno == EINVAL)
1009 if ((evfd = eventfd (0, 0)) >= 0) 1198 evfd = eventfd (0, 0);
1199
1200 if (evfd >= 0)
1010 { 1201 {
1011 evpipe [0] = -1; 1202 evpipe [0] = -1;
1012 fd_intern (evfd); 1203 fd_intern (evfd); /* doing it twice doesn't hurt */
1013 ev_io_set (&pipeev, evfd, EV_READ); 1204 ev_io_set (&pipe_w, evfd, EV_READ);
1014 } 1205 }
1015 else 1206 else
1016#endif 1207#endif
1017 { 1208 {
1018 while (pipe (evpipe)) 1209 while (pipe (evpipe))
1019 syserr ("(libev) error creating signal/async pipe"); 1210 ev_syserr ("(libev) error creating signal/async pipe");
1020 1211
1021 fd_intern (evpipe [0]); 1212 fd_intern (evpipe [0]);
1022 fd_intern (evpipe [1]); 1213 fd_intern (evpipe [1]);
1023 ev_io_set (&pipeev, evpipe [0], EV_READ); 1214 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1024 } 1215 }
1025 1216
1026 ev_io_start (EV_A_ &pipeev); 1217 ev_io_start (EV_A_ &pipe_w);
1027 ev_unref (EV_A); /* watcher should not keep loop alive */ 1218 ev_unref (EV_A); /* watcher should not keep loop alive */
1028 } 1219 }
1029} 1220}
1030 1221
1031void inline_size 1222inline_size void
1032evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1223evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1033{ 1224{
1034 if (!*flag) 1225 if (!*flag)
1035 { 1226 {
1036 int old_errno = errno; /* save errno because write might clobber it */ 1227 int old_errno = errno; /* save errno because write might clobber it */
… …
1049 1240
1050 errno = old_errno; 1241 errno = old_errno;
1051 } 1242 }
1052} 1243}
1053 1244
1245/* called whenever the libev signal pipe */
1246/* got some events (signal, async) */
1054static void 1247static void
1055pipecb (EV_P_ ev_io *iow, int revents) 1248pipecb (EV_P_ ev_io *iow, int revents)
1056{ 1249{
1250 int i;
1251
1057#if EV_USE_EVENTFD 1252#if EV_USE_EVENTFD
1058 if (evfd >= 0) 1253 if (evfd >= 0)
1059 { 1254 {
1060 uint64_t counter; 1255 uint64_t counter;
1061 read (evfd, &counter, sizeof (uint64_t)); 1256 read (evfd, &counter, sizeof (uint64_t));
… …
1065 { 1260 {
1066 char dummy; 1261 char dummy;
1067 read (evpipe [0], &dummy, 1); 1262 read (evpipe [0], &dummy, 1);
1068 } 1263 }
1069 1264
1070 if (gotsig && ev_is_default_loop (EV_A)) 1265 if (sig_pending)
1071 { 1266 {
1072 int signum; 1267 sig_pending = 0;
1073 gotsig = 0;
1074 1268
1075 for (signum = signalmax; signum--; ) 1269 for (i = EV_NSIG - 1; i--; )
1076 if (signals [signum].gotsig) 1270 if (expect_false (signals [i].pending))
1077 ev_feed_signal_event (EV_A_ signum + 1); 1271 ev_feed_signal_event (EV_A_ i + 1);
1078 } 1272 }
1079 1273
1080#if EV_ASYNC_ENABLE 1274#if EV_ASYNC_ENABLE
1081 if (gotasync) 1275 if (async_pending)
1082 { 1276 {
1083 int i; 1277 async_pending = 0;
1084 gotasync = 0;
1085 1278
1086 for (i = asynccnt; i--; ) 1279 for (i = asynccnt; i--; )
1087 if (asyncs [i]->sent) 1280 if (asyncs [i]->sent)
1088 { 1281 {
1089 asyncs [i]->sent = 0; 1282 asyncs [i]->sent = 0;
… …
1097 1290
1098static void 1291static void
1099ev_sighandler (int signum) 1292ev_sighandler (int signum)
1100{ 1293{
1101#if EV_MULTIPLICITY 1294#if EV_MULTIPLICITY
1102 struct ev_loop *loop = &default_loop_struct; 1295 EV_P = signals [signum - 1].loop;
1103#endif 1296#endif
1104 1297
1105#if _WIN32 1298#if _WIN32
1106 signal (signum, ev_sighandler); 1299 signal (signum, ev_sighandler);
1107#endif 1300#endif
1108 1301
1109 signals [signum - 1].gotsig = 1; 1302 signals [signum - 1].pending = 1;
1110 evpipe_write (EV_A_ &gotsig); 1303 evpipe_write (EV_A_ &sig_pending);
1111} 1304}
1112 1305
1113void noinline 1306void noinline
1114ev_feed_signal_event (EV_P_ int signum) 1307ev_feed_signal_event (EV_P_ int signum)
1115{ 1308{
1116 WL w; 1309 WL w;
1117 1310
1311 if (expect_false (signum <= 0 || signum > EV_NSIG))
1312 return;
1313
1314 --signum;
1315
1118#if EV_MULTIPLICITY 1316#if EV_MULTIPLICITY
1119 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1317 /* it is permissible to try to feed a signal to the wrong loop */
1120#endif 1318 /* or, likely more useful, feeding a signal nobody is waiting for */
1121 1319
1122 --signum; 1320 if (expect_false (signals [signum].loop != EV_A))
1123
1124 if (signum < 0 || signum >= signalmax)
1125 return; 1321 return;
1322#endif
1126 1323
1127 signals [signum].gotsig = 0; 1324 signals [signum].pending = 0;
1128 1325
1129 for (w = signals [signum].head; w; w = w->next) 1326 for (w = signals [signum].head; w; w = w->next)
1130 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1327 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1131} 1328}
1132 1329
1330#if EV_USE_SIGNALFD
1331static void
1332sigfdcb (EV_P_ ev_io *iow, int revents)
1333{
1334 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1335
1336 for (;;)
1337 {
1338 ssize_t res = read (sigfd, si, sizeof (si));
1339
1340 /* not ISO-C, as res might be -1, but works with SuS */
1341 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1342 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1343
1344 if (res < (ssize_t)sizeof (si))
1345 break;
1346 }
1347}
1348#endif
1349
1133/*****************************************************************************/ 1350/*****************************************************************************/
1134 1351
1135static WL childs [EV_PID_HASHSIZE]; 1352static WL childs [EV_PID_HASHSIZE];
1136 1353
1137#ifndef _WIN32 1354#ifndef _WIN32
… …
1140 1357
1141#ifndef WIFCONTINUED 1358#ifndef WIFCONTINUED
1142# define WIFCONTINUED(status) 0 1359# define WIFCONTINUED(status) 0
1143#endif 1360#endif
1144 1361
1145void inline_speed 1362/* handle a single child status event */
1363inline_speed void
1146child_reap (EV_P_ int chain, int pid, int status) 1364child_reap (EV_P_ int chain, int pid, int status)
1147{ 1365{
1148 ev_child *w; 1366 ev_child *w;
1149 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1367 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1150 1368
… …
1163 1381
1164#ifndef WCONTINUED 1382#ifndef WCONTINUED
1165# define WCONTINUED 0 1383# define WCONTINUED 0
1166#endif 1384#endif
1167 1385
1386/* called on sigchld etc., calls waitpid */
1168static void 1387static void
1169childcb (EV_P_ ev_signal *sw, int revents) 1388childcb (EV_P_ ev_signal *sw, int revents)
1170{ 1389{
1171 int pid, status; 1390 int pid, status;
1172 1391
… …
1253 /* kqueue is borked on everything but netbsd apparently */ 1472 /* kqueue is borked on everything but netbsd apparently */
1254 /* it usually doesn't work correctly on anything but sockets and pipes */ 1473 /* it usually doesn't work correctly on anything but sockets and pipes */
1255 flags &= ~EVBACKEND_KQUEUE; 1474 flags &= ~EVBACKEND_KQUEUE;
1256#endif 1475#endif
1257#ifdef __APPLE__ 1476#ifdef __APPLE__
1258 // flags &= ~EVBACKEND_KQUEUE; for documentation 1477 /* only select works correctly on that "unix-certified" platform */
1259 flags &= ~EVBACKEND_POLL; 1478 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1479 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1260#endif 1480#endif
1261 1481
1262 return flags; 1482 return flags;
1263} 1483}
1264 1484
… …
1278ev_backend (EV_P) 1498ev_backend (EV_P)
1279{ 1499{
1280 return backend; 1500 return backend;
1281} 1501}
1282 1502
1503#if EV_MINIMAL < 2
1283unsigned int 1504unsigned int
1284ev_loop_count (EV_P) 1505ev_loop_count (EV_P)
1285{ 1506{
1286 return loop_count; 1507 return loop_count;
1287} 1508}
1288 1509
1510unsigned int
1511ev_loop_depth (EV_P)
1512{
1513 return loop_depth;
1514}
1515
1289void 1516void
1290ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1517ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1291{ 1518{
1292 io_blocktime = interval; 1519 io_blocktime = interval;
1293} 1520}
… …
1296ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1523ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1297{ 1524{
1298 timeout_blocktime = interval; 1525 timeout_blocktime = interval;
1299} 1526}
1300 1527
1528void
1529ev_set_userdata (EV_P_ void *data)
1530{
1531 userdata = data;
1532}
1533
1534void *
1535ev_userdata (EV_P)
1536{
1537 return userdata;
1538}
1539
1540void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1541{
1542 invoke_cb = invoke_pending_cb;
1543}
1544
1545void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1546{
1547 release_cb = release;
1548 acquire_cb = acquire;
1549}
1550#endif
1551
1552/* initialise a loop structure, must be zero-initialised */
1301static void noinline 1553static void noinline
1302loop_init (EV_P_ unsigned int flags) 1554loop_init (EV_P_ unsigned int flags)
1303{ 1555{
1304 if (!backend) 1556 if (!backend)
1305 { 1557 {
1558#if EV_USE_REALTIME
1559 if (!have_realtime)
1560 {
1561 struct timespec ts;
1562
1563 if (!clock_gettime (CLOCK_REALTIME, &ts))
1564 have_realtime = 1;
1565 }
1566#endif
1567
1306#if EV_USE_MONOTONIC 1568#if EV_USE_MONOTONIC
1569 if (!have_monotonic)
1307 { 1570 {
1308 struct timespec ts; 1571 struct timespec ts;
1572
1309 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1573 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1310 have_monotonic = 1; 1574 have_monotonic = 1;
1311 } 1575 }
1312#endif 1576#endif
1577
1578 /* pid check not overridable via env */
1579#ifndef _WIN32
1580 if (flags & EVFLAG_FORKCHECK)
1581 curpid = getpid ();
1582#endif
1583
1584 if (!(flags & EVFLAG_NOENV)
1585 && !enable_secure ()
1586 && getenv ("LIBEV_FLAGS"))
1587 flags = atoi (getenv ("LIBEV_FLAGS"));
1313 1588
1314 ev_rt_now = ev_time (); 1589 ev_rt_now = ev_time ();
1315 mn_now = get_clock (); 1590 mn_now = get_clock ();
1316 now_floor = mn_now; 1591 now_floor = mn_now;
1317 rtmn_diff = ev_rt_now - mn_now; 1592 rtmn_diff = ev_rt_now - mn_now;
1593#if EV_MINIMAL < 2
1594 invoke_cb = ev_invoke_pending;
1595#endif
1318 1596
1319 io_blocktime = 0.; 1597 io_blocktime = 0.;
1320 timeout_blocktime = 0.; 1598 timeout_blocktime = 0.;
1321 backend = 0; 1599 backend = 0;
1322 backend_fd = -1; 1600 backend_fd = -1;
1323 gotasync = 0; 1601 sig_pending = 0;
1602#if EV_ASYNC_ENABLE
1603 async_pending = 0;
1604#endif
1324#if EV_USE_INOTIFY 1605#if EV_USE_INOTIFY
1325 fs_fd = -2; 1606 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1326#endif 1607#endif
1327 1608#if EV_USE_SIGNALFD
1328 /* pid check not overridable via env */ 1609 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2;
1329#ifndef _WIN32
1330 if (flags & EVFLAG_FORKCHECK)
1331 curpid = getpid ();
1332#endif 1610#endif
1333
1334 if (!(flags & EVFLAG_NOENV)
1335 && !enable_secure ()
1336 && getenv ("LIBEV_FLAGS"))
1337 flags = atoi (getenv ("LIBEV_FLAGS"));
1338 1611
1339 if (!(flags & 0x0000ffffU)) 1612 if (!(flags & 0x0000ffffU))
1340 flags |= ev_recommended_backends (); 1613 flags |= ev_recommended_backends ();
1341 1614
1342#if EV_USE_PORT 1615#if EV_USE_PORT
… …
1353#endif 1626#endif
1354#if EV_USE_SELECT 1627#if EV_USE_SELECT
1355 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1628 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1356#endif 1629#endif
1357 1630
1631 ev_prepare_init (&pending_w, pendingcb);
1632
1358 ev_init (&pipeev, pipecb); 1633 ev_init (&pipe_w, pipecb);
1359 ev_set_priority (&pipeev, EV_MAXPRI); 1634 ev_set_priority (&pipe_w, EV_MAXPRI);
1360 } 1635 }
1361} 1636}
1362 1637
1638/* free up a loop structure */
1363static void noinline 1639static void noinline
1364loop_destroy (EV_P) 1640loop_destroy (EV_P)
1365{ 1641{
1366 int i; 1642 int i;
1367 1643
1368 if (ev_is_active (&pipeev)) 1644 if (ev_is_active (&pipe_w))
1369 { 1645 {
1370 ev_ref (EV_A); /* signal watcher */ 1646 /*ev_ref (EV_A);*/
1371 ev_io_stop (EV_A_ &pipeev); 1647 /*ev_io_stop (EV_A_ &pipe_w);*/
1372 1648
1373#if EV_USE_EVENTFD 1649#if EV_USE_EVENTFD
1374 if (evfd >= 0) 1650 if (evfd >= 0)
1375 close (evfd); 1651 close (evfd);
1376#endif 1652#endif
1377 1653
1378 if (evpipe [0] >= 0) 1654 if (evpipe [0] >= 0)
1379 { 1655 {
1380 close (evpipe [0]); 1656 EV_WIN32_CLOSE_FD (evpipe [0]);
1381 close (evpipe [1]); 1657 EV_WIN32_CLOSE_FD (evpipe [1]);
1382 } 1658 }
1383 } 1659 }
1660
1661#if EV_USE_SIGNALFD
1662 if (ev_is_active (&sigfd_w))
1663 {
1664 /*ev_ref (EV_A);*/
1665 /*ev_io_stop (EV_A_ &sigfd_w);*/
1666
1667 close (sigfd);
1668 }
1669#endif
1384 1670
1385#if EV_USE_INOTIFY 1671#if EV_USE_INOTIFY
1386 if (fs_fd >= 0) 1672 if (fs_fd >= 0)
1387 close (fs_fd); 1673 close (fs_fd);
1388#endif 1674#endif
… …
1412#if EV_IDLE_ENABLE 1698#if EV_IDLE_ENABLE
1413 array_free (idle, [i]); 1699 array_free (idle, [i]);
1414#endif 1700#endif
1415 } 1701 }
1416 1702
1417 ev_free (anfds); anfdmax = 0; 1703 ev_free (anfds); anfds = 0; anfdmax = 0;
1418 1704
1419 /* have to use the microsoft-never-gets-it-right macro */ 1705 /* have to use the microsoft-never-gets-it-right macro */
1706 array_free (rfeed, EMPTY);
1420 array_free (fdchange, EMPTY); 1707 array_free (fdchange, EMPTY);
1421 array_free (timer, EMPTY); 1708 array_free (timer, EMPTY);
1422#if EV_PERIODIC_ENABLE 1709#if EV_PERIODIC_ENABLE
1423 array_free (periodic, EMPTY); 1710 array_free (periodic, EMPTY);
1424#endif 1711#endif
… …
1433 1720
1434 backend = 0; 1721 backend = 0;
1435} 1722}
1436 1723
1437#if EV_USE_INOTIFY 1724#if EV_USE_INOTIFY
1438void inline_size infy_fork (EV_P); 1725inline_size void infy_fork (EV_P);
1439#endif 1726#endif
1440 1727
1441void inline_size 1728inline_size void
1442loop_fork (EV_P) 1729loop_fork (EV_P)
1443{ 1730{
1444#if EV_USE_PORT 1731#if EV_USE_PORT
1445 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1732 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1446#endif 1733#endif
… …
1452#endif 1739#endif
1453#if EV_USE_INOTIFY 1740#if EV_USE_INOTIFY
1454 infy_fork (EV_A); 1741 infy_fork (EV_A);
1455#endif 1742#endif
1456 1743
1457 if (ev_is_active (&pipeev)) 1744 if (ev_is_active (&pipe_w))
1458 { 1745 {
1459 /* this "locks" the handlers against writing to the pipe */ 1746 /* this "locks" the handlers against writing to the pipe */
1460 /* while we modify the fd vars */ 1747 /* while we modify the fd vars */
1461 gotsig = 1; 1748 sig_pending = 1;
1462#if EV_ASYNC_ENABLE 1749#if EV_ASYNC_ENABLE
1463 gotasync = 1; 1750 async_pending = 1;
1464#endif 1751#endif
1465 1752
1466 ev_ref (EV_A); 1753 ev_ref (EV_A);
1467 ev_io_stop (EV_A_ &pipeev); 1754 ev_io_stop (EV_A_ &pipe_w);
1468 1755
1469#if EV_USE_EVENTFD 1756#if EV_USE_EVENTFD
1470 if (evfd >= 0) 1757 if (evfd >= 0)
1471 close (evfd); 1758 close (evfd);
1472#endif 1759#endif
1473 1760
1474 if (evpipe [0] >= 0) 1761 if (evpipe [0] >= 0)
1475 { 1762 {
1476 close (evpipe [0]); 1763 EV_WIN32_CLOSE_FD (evpipe [0]);
1477 close (evpipe [1]); 1764 EV_WIN32_CLOSE_FD (evpipe [1]);
1478 } 1765 }
1479 1766
1480 evpipe_init (EV_A); 1767 evpipe_init (EV_A);
1481 /* now iterate over everything, in case we missed something */ 1768 /* now iterate over everything, in case we missed something */
1482 pipecb (EV_A_ &pipeev, EV_READ); 1769 pipecb (EV_A_ &pipe_w, EV_READ);
1483 } 1770 }
1484 1771
1485 postfork = 0; 1772 postfork = 0;
1486} 1773}
1487 1774
1488#if EV_MULTIPLICITY 1775#if EV_MULTIPLICITY
1776
1489struct ev_loop * 1777struct ev_loop *
1490ev_loop_new (unsigned int flags) 1778ev_loop_new (unsigned int flags)
1491{ 1779{
1492 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1780 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1493 1781
1494 memset (loop, 0, sizeof (struct ev_loop)); 1782 memset (EV_A, 0, sizeof (struct ev_loop));
1495
1496 loop_init (EV_A_ flags); 1783 loop_init (EV_A_ flags);
1497 1784
1498 if (ev_backend (EV_A)) 1785 if (ev_backend (EV_A))
1499 return loop; 1786 return EV_A;
1500 1787
1501 return 0; 1788 return 0;
1502} 1789}
1503 1790
1504void 1791void
… …
1511void 1798void
1512ev_loop_fork (EV_P) 1799ev_loop_fork (EV_P)
1513{ 1800{
1514 postfork = 1; /* must be in line with ev_default_fork */ 1801 postfork = 1; /* must be in line with ev_default_fork */
1515} 1802}
1803#endif /* multiplicity */
1516 1804
1517#if EV_VERIFY 1805#if EV_VERIFY
1518static void 1806static void noinline
1807verify_watcher (EV_P_ W w)
1808{
1809 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1810
1811 if (w->pending)
1812 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1813}
1814
1815static void noinline
1816verify_heap (EV_P_ ANHE *heap, int N)
1817{
1818 int i;
1819
1820 for (i = HEAP0; i < N + HEAP0; ++i)
1821 {
1822 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1823 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1824 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1825
1826 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1827 }
1828}
1829
1830static void noinline
1519array_check (W **ws, int cnt) 1831array_verify (EV_P_ W *ws, int cnt)
1520{ 1832{
1521 while (cnt--) 1833 while (cnt--)
1834 {
1522 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 1835 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1836 verify_watcher (EV_A_ ws [cnt]);
1837 }
1523} 1838}
1839#endif
1524 1840
1525static void 1841#if EV_MINIMAL < 2
1842void
1526ev_loop_verify (EV_P) 1843ev_loop_verify (EV_P)
1527{ 1844{
1845#if EV_VERIFY
1528 int i; 1846 int i;
1847 WL w;
1529 1848
1849 assert (activecnt >= -1);
1850
1851 assert (fdchangemax >= fdchangecnt);
1852 for (i = 0; i < fdchangecnt; ++i)
1853 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1854
1855 assert (anfdmax >= 0);
1856 for (i = 0; i < anfdmax; ++i)
1857 for (w = anfds [i].head; w; w = w->next)
1858 {
1859 verify_watcher (EV_A_ (W)w);
1860 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1861 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1862 }
1863
1864 assert (timermax >= timercnt);
1530 checkheap (timers, timercnt); 1865 verify_heap (EV_A_ timers, timercnt);
1866
1531#if EV_PERIODIC_ENABLE 1867#if EV_PERIODIC_ENABLE
1868 assert (periodicmax >= periodiccnt);
1532 checkheap (periodics, periodiccnt); 1869 verify_heap (EV_A_ periodics, periodiccnt);
1533#endif 1870#endif
1534 1871
1872 for (i = NUMPRI; i--; )
1873 {
1874 assert (pendingmax [i] >= pendingcnt [i]);
1535#if EV_IDLE_ENABLE 1875#if EV_IDLE_ENABLE
1536 for (i = NUMPRI; i--; ) 1876 assert (idleall >= 0);
1877 assert (idlemax [i] >= idlecnt [i]);
1537 array_check ((W **)idles [i], idlecnt [i]); 1878 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1538#endif 1879#endif
1880 }
1881
1539#if EV_FORK_ENABLE 1882#if EV_FORK_ENABLE
1883 assert (forkmax >= forkcnt);
1540 array_check ((W **)forks, forkcnt); 1884 array_verify (EV_A_ (W *)forks, forkcnt);
1541#endif 1885#endif
1542 array_check ((W **)prepares, preparecnt); 1886
1543 array_check ((W **)checks, checkcnt);
1544#if EV_ASYNC_ENABLE 1887#if EV_ASYNC_ENABLE
1888 assert (asyncmax >= asynccnt);
1545 array_check ((W **)asyncs, asynccnt); 1889 array_verify (EV_A_ (W *)asyncs, asynccnt);
1890#endif
1891
1892 assert (preparemax >= preparecnt);
1893 array_verify (EV_A_ (W *)prepares, preparecnt);
1894
1895 assert (checkmax >= checkcnt);
1896 array_verify (EV_A_ (W *)checks, checkcnt);
1897
1898# if 0
1899 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1900 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1546#endif 1901# endif
1547}
1548#endif 1902#endif
1549 1903}
1550#endif 1904#endif
1551 1905
1552#if EV_MULTIPLICITY 1906#if EV_MULTIPLICITY
1553struct ev_loop * 1907struct ev_loop *
1554ev_default_loop_init (unsigned int flags) 1908ev_default_loop_init (unsigned int flags)
… …
1558#endif 1912#endif
1559{ 1913{
1560 if (!ev_default_loop_ptr) 1914 if (!ev_default_loop_ptr)
1561 { 1915 {
1562#if EV_MULTIPLICITY 1916#if EV_MULTIPLICITY
1563 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1917 EV_P = ev_default_loop_ptr = &default_loop_struct;
1564#else 1918#else
1565 ev_default_loop_ptr = 1; 1919 ev_default_loop_ptr = 1;
1566#endif 1920#endif
1567 1921
1568 loop_init (EV_A_ flags); 1922 loop_init (EV_A_ flags);
… …
1585 1939
1586void 1940void
1587ev_default_destroy (void) 1941ev_default_destroy (void)
1588{ 1942{
1589#if EV_MULTIPLICITY 1943#if EV_MULTIPLICITY
1590 struct ev_loop *loop = ev_default_loop_ptr; 1944 EV_P = ev_default_loop_ptr;
1591#endif 1945#endif
1946
1947 ev_default_loop_ptr = 0;
1592 1948
1593#ifndef _WIN32 1949#ifndef _WIN32
1594 ev_ref (EV_A); /* child watcher */ 1950 ev_ref (EV_A); /* child watcher */
1595 ev_signal_stop (EV_A_ &childev); 1951 ev_signal_stop (EV_A_ &childev);
1596#endif 1952#endif
… …
1600 1956
1601void 1957void
1602ev_default_fork (void) 1958ev_default_fork (void)
1603{ 1959{
1604#if EV_MULTIPLICITY 1960#if EV_MULTIPLICITY
1605 struct ev_loop *loop = ev_default_loop_ptr; 1961 EV_P = ev_default_loop_ptr;
1606#endif 1962#endif
1607 1963
1608 if (backend)
1609 postfork = 1; /* must be in line with ev_loop_fork */ 1964 postfork = 1; /* must be in line with ev_loop_fork */
1610} 1965}
1611 1966
1612/*****************************************************************************/ 1967/*****************************************************************************/
1613 1968
1614void 1969void
1615ev_invoke (EV_P_ void *w, int revents) 1970ev_invoke (EV_P_ void *w, int revents)
1616{ 1971{
1617 EV_CB_INVOKE ((W)w, revents); 1972 EV_CB_INVOKE ((W)w, revents);
1618} 1973}
1619 1974
1620void inline_speed 1975unsigned int
1621call_pending (EV_P) 1976ev_pending_count (EV_P)
1622{ 1977{
1623 int pri; 1978 int pri;
1979 unsigned int count = 0;
1624 1980
1625 EV_FREQUENT_CHECK; 1981 for (pri = NUMPRI; pri--; )
1982 count += pendingcnt [pri];
1983
1984 return count;
1985}
1986
1987void noinline
1988ev_invoke_pending (EV_P)
1989{
1990 int pri;
1626 1991
1627 for (pri = NUMPRI; pri--; ) 1992 for (pri = NUMPRI; pri--; )
1628 while (pendingcnt [pri]) 1993 while (pendingcnt [pri])
1629 { 1994 {
1630 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1995 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1631 1996
1632 if (expect_true (p->w))
1633 {
1634 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 1997 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1998 /* ^ this is no longer true, as pending_w could be here */
1635 1999
1636 p->w->pending = 0; 2000 p->w->pending = 0;
1637 EV_CB_INVOKE (p->w, p->events); 2001 EV_CB_INVOKE (p->w, p->events);
1638 } 2002 EV_FREQUENT_CHECK;
1639 } 2003 }
1640
1641 EV_FREQUENT_CHECK;
1642} 2004}
1643 2005
1644#if EV_IDLE_ENABLE 2006#if EV_IDLE_ENABLE
1645void inline_size 2007/* make idle watchers pending. this handles the "call-idle */
2008/* only when higher priorities are idle" logic */
2009inline_size void
1646idle_reify (EV_P) 2010idle_reify (EV_P)
1647{ 2011{
1648 if (expect_false (idleall)) 2012 if (expect_false (idleall))
1649 { 2013 {
1650 int pri; 2014 int pri;
… …
1662 } 2026 }
1663 } 2027 }
1664} 2028}
1665#endif 2029#endif
1666 2030
1667void inline_size 2031/* make timers pending */
2032inline_size void
1668timers_reify (EV_P) 2033timers_reify (EV_P)
1669{ 2034{
1670 EV_FREQUENT_CHECK; 2035 EV_FREQUENT_CHECK;
1671 2036
1672 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2037 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1673 { 2038 {
1674 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2039 do
1675
1676 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1677
1678 /* first reschedule or stop timer */
1679 if (w->repeat)
1680 { 2040 {
2041 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2042
2043 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2044
2045 /* first reschedule or stop timer */
2046 if (w->repeat)
2047 {
1681 ev_at (w) += w->repeat; 2048 ev_at (w) += w->repeat;
1682 if (ev_at (w) < mn_now) 2049 if (ev_at (w) < mn_now)
1683 ev_at (w) = mn_now; 2050 ev_at (w) = mn_now;
1684 2051
1685 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2052 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1686 2053
1687 ANHE_at_cache (timers [HEAP0]); 2054 ANHE_at_cache (timers [HEAP0]);
1688 downheap (timers, timercnt, HEAP0); 2055 downheap (timers, timercnt, HEAP0);
2056 }
2057 else
2058 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2059
2060 EV_FREQUENT_CHECK;
2061 feed_reverse (EV_A_ (W)w);
1689 } 2062 }
1690 else 2063 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1691 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1692 2064
1693 EV_FREQUENT_CHECK;
1694 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 2065 feed_reverse_done (EV_A_ EV_TIMEOUT);
1695 } 2066 }
1696} 2067}
1697 2068
1698#if EV_PERIODIC_ENABLE 2069#if EV_PERIODIC_ENABLE
1699void inline_size 2070/* make periodics pending */
2071inline_size void
1700periodics_reify (EV_P) 2072periodics_reify (EV_P)
1701{ 2073{
1702 EV_FREQUENT_CHECK; 2074 EV_FREQUENT_CHECK;
2075
1703 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2076 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1704 { 2077 {
1705 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2078 int feed_count = 0;
1706 2079
1707 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2080 do
1708
1709 /* first reschedule or stop timer */
1710 if (w->reschedule_cb)
1711 { 2081 {
2082 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2083
2084 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2085
2086 /* first reschedule or stop timer */
2087 if (w->reschedule_cb)
2088 {
1712 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2089 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1713 2090
1714 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2091 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1715 2092
1716 ANHE_at_cache (periodics [HEAP0]); 2093 ANHE_at_cache (periodics [HEAP0]);
1717 downheap (periodics, periodiccnt, HEAP0); 2094 downheap (periodics, periodiccnt, HEAP0);
2095 }
2096 else if (w->interval)
2097 {
2098 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2099 /* if next trigger time is not sufficiently in the future, put it there */
2100 /* this might happen because of floating point inexactness */
2101 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2102 {
2103 ev_at (w) += w->interval;
2104
2105 /* if interval is unreasonably low we might still have a time in the past */
2106 /* so correct this. this will make the periodic very inexact, but the user */
2107 /* has effectively asked to get triggered more often than possible */
2108 if (ev_at (w) < ev_rt_now)
2109 ev_at (w) = ev_rt_now;
2110 }
2111
2112 ANHE_at_cache (periodics [HEAP0]);
2113 downheap (periodics, periodiccnt, HEAP0);
2114 }
2115 else
2116 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2117
1718 EV_FREQUENT_CHECK; 2118 EV_FREQUENT_CHECK;
2119 feed_reverse (EV_A_ (W)w);
1719 } 2120 }
1720 else if (w->interval) 2121 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1721 {
1722 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1723 /* if next trigger time is not sufficiently in the future, put it there */
1724 /* this might happen because of floating point inexactness */
1725 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1726 {
1727 ev_at (w) += w->interval;
1728 2122
1729 /* if interval is unreasonably low we might still have a time in the past */
1730 /* so correct this. this will make the periodic very inexact, but the user */
1731 /* has effectively asked to get triggered more often than possible */
1732 if (ev_at (w) < ev_rt_now)
1733 ev_at (w) = ev_rt_now;
1734 }
1735
1736 ANHE_at_cache (periodics [HEAP0]);
1737 downheap (periodics, periodiccnt, HEAP0);
1738 }
1739 else
1740 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1741
1742 EV_FREQUENT_CHECK;
1743 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2123 feed_reverse_done (EV_A_ EV_PERIODIC);
1744 } 2124 }
1745} 2125}
1746 2126
2127/* simply recalculate all periodics */
2128/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1747static void noinline 2129static void noinline
1748periodics_reschedule (EV_P) 2130periodics_reschedule (EV_P)
1749{ 2131{
1750 int i; 2132 int i;
1751 2133
… …
1764 2146
1765 reheap (periodics, periodiccnt); 2147 reheap (periodics, periodiccnt);
1766} 2148}
1767#endif 2149#endif
1768 2150
1769void inline_speed 2151/* adjust all timers by a given offset */
2152static void noinline
2153timers_reschedule (EV_P_ ev_tstamp adjust)
2154{
2155 int i;
2156
2157 for (i = 0; i < timercnt; ++i)
2158 {
2159 ANHE *he = timers + i + HEAP0;
2160 ANHE_w (*he)->at += adjust;
2161 ANHE_at_cache (*he);
2162 }
2163}
2164
2165/* fetch new monotonic and realtime times from the kernel */
2166/* also detetc if there was a timejump, and act accordingly */
2167inline_speed void
1770time_update (EV_P_ ev_tstamp max_block) 2168time_update (EV_P_ ev_tstamp max_block)
1771{ 2169{
1772 int i;
1773
1774#if EV_USE_MONOTONIC 2170#if EV_USE_MONOTONIC
1775 if (expect_true (have_monotonic)) 2171 if (expect_true (have_monotonic))
1776 { 2172 {
2173 int i;
1777 ev_tstamp odiff = rtmn_diff; 2174 ev_tstamp odiff = rtmn_diff;
1778 2175
1779 mn_now = get_clock (); 2176 mn_now = get_clock ();
1780 2177
1781 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2178 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1807 ev_rt_now = ev_time (); 2204 ev_rt_now = ev_time ();
1808 mn_now = get_clock (); 2205 mn_now = get_clock ();
1809 now_floor = mn_now; 2206 now_floor = mn_now;
1810 } 2207 }
1811 2208
2209 /* no timer adjustment, as the monotonic clock doesn't jump */
2210 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1812# if EV_PERIODIC_ENABLE 2211# if EV_PERIODIC_ENABLE
1813 periodics_reschedule (EV_A); 2212 periodics_reschedule (EV_A);
1814# endif 2213# endif
1815 /* no timer adjustment, as the monotonic clock doesn't jump */
1816 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1817 } 2214 }
1818 else 2215 else
1819#endif 2216#endif
1820 { 2217 {
1821 ev_rt_now = ev_time (); 2218 ev_rt_now = ev_time ();
1822 2219
1823 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2220 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1824 { 2221 {
2222 /* adjust timers. this is easy, as the offset is the same for all of them */
2223 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1825#if EV_PERIODIC_ENABLE 2224#if EV_PERIODIC_ENABLE
1826 periodics_reschedule (EV_A); 2225 periodics_reschedule (EV_A);
1827#endif 2226#endif
1828 /* adjust timers. this is easy, as the offset is the same for all of them */
1829 for (i = 0; i < timercnt; ++i)
1830 {
1831 ANHE *he = timers + i + HEAP0;
1832 ANHE_w (*he)->at += ev_rt_now - mn_now;
1833 ANHE_at_cache (*he);
1834 }
1835 } 2227 }
1836 2228
1837 mn_now = ev_rt_now; 2229 mn_now = ev_rt_now;
1838 } 2230 }
1839} 2231}
1840 2232
1841void 2233void
1842ev_ref (EV_P)
1843{
1844 ++activecnt;
1845}
1846
1847void
1848ev_unref (EV_P)
1849{
1850 --activecnt;
1851}
1852
1853static int loop_done;
1854
1855void
1856ev_loop (EV_P_ int flags) 2234ev_loop (EV_P_ int flags)
1857{ 2235{
2236#if EV_MINIMAL < 2
2237 ++loop_depth;
2238#endif
2239
2240 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2241
1858 loop_done = EVUNLOOP_CANCEL; 2242 loop_done = EVUNLOOP_CANCEL;
1859 2243
1860 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2244 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1861 2245
1862 do 2246 do
1863 { 2247 {
2248#if EV_VERIFY >= 2
2249 ev_loop_verify (EV_A);
2250#endif
2251
1864#ifndef _WIN32 2252#ifndef _WIN32
1865 if (expect_false (curpid)) /* penalise the forking check even more */ 2253 if (expect_false (curpid)) /* penalise the forking check even more */
1866 if (expect_false (getpid () != curpid)) 2254 if (expect_false (getpid () != curpid))
1867 { 2255 {
1868 curpid = getpid (); 2256 curpid = getpid ();
… …
1874 /* we might have forked, so queue fork handlers */ 2262 /* we might have forked, so queue fork handlers */
1875 if (expect_false (postfork)) 2263 if (expect_false (postfork))
1876 if (forkcnt) 2264 if (forkcnt)
1877 { 2265 {
1878 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2266 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1879 call_pending (EV_A); 2267 EV_INVOKE_PENDING;
1880 } 2268 }
1881#endif 2269#endif
1882 2270
1883 /* queue prepare watchers (and execute them) */ 2271 /* queue prepare watchers (and execute them) */
1884 if (expect_false (preparecnt)) 2272 if (expect_false (preparecnt))
1885 { 2273 {
1886 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2274 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1887 call_pending (EV_A); 2275 EV_INVOKE_PENDING;
1888 } 2276 }
1889 2277
1890 if (expect_false (!activecnt)) 2278 if (expect_false (loop_done))
1891 break; 2279 break;
1892 2280
1893 /* we might have forked, so reify kernel state if necessary */ 2281 /* we might have forked, so reify kernel state if necessary */
1894 if (expect_false (postfork)) 2282 if (expect_false (postfork))
1895 loop_fork (EV_A); 2283 loop_fork (EV_A);
… …
1902 ev_tstamp waittime = 0.; 2290 ev_tstamp waittime = 0.;
1903 ev_tstamp sleeptime = 0.; 2291 ev_tstamp sleeptime = 0.;
1904 2292
1905 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2293 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1906 { 2294 {
2295 /* remember old timestamp for io_blocktime calculation */
2296 ev_tstamp prev_mn_now = mn_now;
2297
1907 /* update time to cancel out callback processing overhead */ 2298 /* update time to cancel out callback processing overhead */
1908 time_update (EV_A_ 1e100); 2299 time_update (EV_A_ 1e100);
1909 2300
1910 waittime = MAX_BLOCKTIME; 2301 waittime = MAX_BLOCKTIME;
1911 2302
… …
1921 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2312 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1922 if (waittime > to) waittime = to; 2313 if (waittime > to) waittime = to;
1923 } 2314 }
1924#endif 2315#endif
1925 2316
2317 /* don't let timeouts decrease the waittime below timeout_blocktime */
1926 if (expect_false (waittime < timeout_blocktime)) 2318 if (expect_false (waittime < timeout_blocktime))
1927 waittime = timeout_blocktime; 2319 waittime = timeout_blocktime;
1928 2320
1929 sleeptime = waittime - backend_fudge; 2321 /* extra check because io_blocktime is commonly 0 */
1930
1931 if (expect_true (sleeptime > io_blocktime)) 2322 if (expect_false (io_blocktime))
1932 sleeptime = io_blocktime;
1933
1934 if (sleeptime)
1935 { 2323 {
2324 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2325
2326 if (sleeptime > waittime - backend_fudge)
2327 sleeptime = waittime - backend_fudge;
2328
2329 if (expect_true (sleeptime > 0.))
2330 {
1936 ev_sleep (sleeptime); 2331 ev_sleep (sleeptime);
1937 waittime -= sleeptime; 2332 waittime -= sleeptime;
2333 }
1938 } 2334 }
1939 } 2335 }
1940 2336
2337#if EV_MINIMAL < 2
1941 ++loop_count; 2338 ++loop_count;
2339#endif
2340 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1942 backend_poll (EV_A_ waittime); 2341 backend_poll (EV_A_ waittime);
2342 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1943 2343
1944 /* update ev_rt_now, do magic */ 2344 /* update ev_rt_now, do magic */
1945 time_update (EV_A_ waittime + sleeptime); 2345 time_update (EV_A_ waittime + sleeptime);
1946 } 2346 }
1947 2347
… …
1958 2358
1959 /* queue check watchers, to be executed first */ 2359 /* queue check watchers, to be executed first */
1960 if (expect_false (checkcnt)) 2360 if (expect_false (checkcnt))
1961 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2361 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1962 2362
1963 call_pending (EV_A); 2363 EV_INVOKE_PENDING;
1964 } 2364 }
1965 while (expect_true ( 2365 while (expect_true (
1966 activecnt 2366 activecnt
1967 && !loop_done 2367 && !loop_done
1968 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2368 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1969 )); 2369 ));
1970 2370
1971 if (loop_done == EVUNLOOP_ONE) 2371 if (loop_done == EVUNLOOP_ONE)
1972 loop_done = EVUNLOOP_CANCEL; 2372 loop_done = EVUNLOOP_CANCEL;
2373
2374#if EV_MINIMAL < 2
2375 --loop_depth;
2376#endif
1973} 2377}
1974 2378
1975void 2379void
1976ev_unloop (EV_P_ int how) 2380ev_unloop (EV_P_ int how)
1977{ 2381{
1978 loop_done = how; 2382 loop_done = how;
1979} 2383}
1980 2384
2385void
2386ev_ref (EV_P)
2387{
2388 ++activecnt;
2389}
2390
2391void
2392ev_unref (EV_P)
2393{
2394 --activecnt;
2395}
2396
2397void
2398ev_now_update (EV_P)
2399{
2400 time_update (EV_A_ 1e100);
2401}
2402
2403void
2404ev_suspend (EV_P)
2405{
2406 ev_now_update (EV_A);
2407}
2408
2409void
2410ev_resume (EV_P)
2411{
2412 ev_tstamp mn_prev = mn_now;
2413
2414 ev_now_update (EV_A);
2415 timers_reschedule (EV_A_ mn_now - mn_prev);
2416#if EV_PERIODIC_ENABLE
2417 /* TODO: really do this? */
2418 periodics_reschedule (EV_A);
2419#endif
2420}
2421
1981/*****************************************************************************/ 2422/*****************************************************************************/
2423/* singly-linked list management, used when the expected list length is short */
1982 2424
1983void inline_size 2425inline_size void
1984wlist_add (WL *head, WL elem) 2426wlist_add (WL *head, WL elem)
1985{ 2427{
1986 elem->next = *head; 2428 elem->next = *head;
1987 *head = elem; 2429 *head = elem;
1988} 2430}
1989 2431
1990void inline_size 2432inline_size void
1991wlist_del (WL *head, WL elem) 2433wlist_del (WL *head, WL elem)
1992{ 2434{
1993 while (*head) 2435 while (*head)
1994 { 2436 {
1995 if (*head == elem) 2437 if (expect_true (*head == elem))
1996 { 2438 {
1997 *head = elem->next; 2439 *head = elem->next;
1998 return; 2440 break;
1999 } 2441 }
2000 2442
2001 head = &(*head)->next; 2443 head = &(*head)->next;
2002 } 2444 }
2003} 2445}
2004 2446
2005void inline_speed 2447/* internal, faster, version of ev_clear_pending */
2448inline_speed void
2006clear_pending (EV_P_ W w) 2449clear_pending (EV_P_ W w)
2007{ 2450{
2008 if (w->pending) 2451 if (w->pending)
2009 { 2452 {
2010 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2453 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2011 w->pending = 0; 2454 w->pending = 0;
2012 } 2455 }
2013} 2456}
2014 2457
2015int 2458int
… …
2019 int pending = w_->pending; 2462 int pending = w_->pending;
2020 2463
2021 if (expect_true (pending)) 2464 if (expect_true (pending))
2022 { 2465 {
2023 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2466 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2467 p->w = (W)&pending_w;
2024 w_->pending = 0; 2468 w_->pending = 0;
2025 p->w = 0;
2026 return p->events; 2469 return p->events;
2027 } 2470 }
2028 else 2471 else
2029 return 0; 2472 return 0;
2030} 2473}
2031 2474
2032void inline_size 2475inline_size void
2033pri_adjust (EV_P_ W w) 2476pri_adjust (EV_P_ W w)
2034{ 2477{
2035 int pri = w->priority; 2478 int pri = ev_priority (w);
2036 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2479 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2037 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2480 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2038 w->priority = pri; 2481 ev_set_priority (w, pri);
2039} 2482}
2040 2483
2041void inline_speed 2484inline_speed void
2042ev_start (EV_P_ W w, int active) 2485ev_start (EV_P_ W w, int active)
2043{ 2486{
2044 pri_adjust (EV_A_ w); 2487 pri_adjust (EV_A_ w);
2045 w->active = active; 2488 w->active = active;
2046 ev_ref (EV_A); 2489 ev_ref (EV_A);
2047} 2490}
2048 2491
2049void inline_size 2492inline_size void
2050ev_stop (EV_P_ W w) 2493ev_stop (EV_P_ W w)
2051{ 2494{
2052 ev_unref (EV_A); 2495 ev_unref (EV_A);
2053 w->active = 0; 2496 w->active = 0;
2054} 2497}
… …
2061 int fd = w->fd; 2504 int fd = w->fd;
2062 2505
2063 if (expect_false (ev_is_active (w))) 2506 if (expect_false (ev_is_active (w)))
2064 return; 2507 return;
2065 2508
2066 assert (("ev_io_start called with negative fd", fd >= 0)); 2509 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2510 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2067 2511
2068 EV_FREQUENT_CHECK; 2512 EV_FREQUENT_CHECK;
2069 2513
2070 ev_start (EV_A_ (W)w, 1); 2514 ev_start (EV_A_ (W)w, 1);
2071 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2515 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2072 wlist_add (&anfds[fd].head, (WL)w); 2516 wlist_add (&anfds[fd].head, (WL)w);
2073 2517
2074 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2518 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2075 w->events &= ~EV_IOFDSET; 2519 w->events &= ~EV__IOFDSET;
2076 2520
2077 EV_FREQUENT_CHECK; 2521 EV_FREQUENT_CHECK;
2078} 2522}
2079 2523
2080void noinline 2524void noinline
… …
2082{ 2526{
2083 clear_pending (EV_A_ (W)w); 2527 clear_pending (EV_A_ (W)w);
2084 if (expect_false (!ev_is_active (w))) 2528 if (expect_false (!ev_is_active (w)))
2085 return; 2529 return;
2086 2530
2087 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2531 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2088 2532
2089 EV_FREQUENT_CHECK; 2533 EV_FREQUENT_CHECK;
2090 2534
2091 wlist_del (&anfds[w->fd].head, (WL)w); 2535 wlist_del (&anfds[w->fd].head, (WL)w);
2092 ev_stop (EV_A_ (W)w); 2536 ev_stop (EV_A_ (W)w);
… …
2102 if (expect_false (ev_is_active (w))) 2546 if (expect_false (ev_is_active (w)))
2103 return; 2547 return;
2104 2548
2105 ev_at (w) += mn_now; 2549 ev_at (w) += mn_now;
2106 2550
2107 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2551 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2108 2552
2109 EV_FREQUENT_CHECK; 2553 EV_FREQUENT_CHECK;
2110 2554
2111 ++timercnt; 2555 ++timercnt;
2112 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2556 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2115 ANHE_at_cache (timers [ev_active (w)]); 2559 ANHE_at_cache (timers [ev_active (w)]);
2116 upheap (timers, ev_active (w)); 2560 upheap (timers, ev_active (w));
2117 2561
2118 EV_FREQUENT_CHECK; 2562 EV_FREQUENT_CHECK;
2119 2563
2120 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2564 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2121} 2565}
2122 2566
2123void noinline 2567void noinline
2124ev_timer_stop (EV_P_ ev_timer *w) 2568ev_timer_stop (EV_P_ ev_timer *w)
2125{ 2569{
… …
2130 EV_FREQUENT_CHECK; 2574 EV_FREQUENT_CHECK;
2131 2575
2132 { 2576 {
2133 int active = ev_active (w); 2577 int active = ev_active (w);
2134 2578
2135 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2579 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2136 2580
2137 --timercnt; 2581 --timercnt;
2138 2582
2139 if (expect_true (active < timercnt + HEAP0)) 2583 if (expect_true (active < timercnt + HEAP0))
2140 { 2584 {
… …
2173 } 2617 }
2174 2618
2175 EV_FREQUENT_CHECK; 2619 EV_FREQUENT_CHECK;
2176} 2620}
2177 2621
2622ev_tstamp
2623ev_timer_remaining (EV_P_ ev_timer *w)
2624{
2625 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2626}
2627
2178#if EV_PERIODIC_ENABLE 2628#if EV_PERIODIC_ENABLE
2179void noinline 2629void noinline
2180ev_periodic_start (EV_P_ ev_periodic *w) 2630ev_periodic_start (EV_P_ ev_periodic *w)
2181{ 2631{
2182 if (expect_false (ev_is_active (w))) 2632 if (expect_false (ev_is_active (w)))
… …
2184 2634
2185 if (w->reschedule_cb) 2635 if (w->reschedule_cb)
2186 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2636 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2187 else if (w->interval) 2637 else if (w->interval)
2188 { 2638 {
2189 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2639 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2190 /* this formula differs from the one in periodic_reify because we do not always round up */ 2640 /* this formula differs from the one in periodic_reify because we do not always round up */
2191 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2641 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2192 } 2642 }
2193 else 2643 else
2194 ev_at (w) = w->offset; 2644 ev_at (w) = w->offset;
… …
2202 ANHE_at_cache (periodics [ev_active (w)]); 2652 ANHE_at_cache (periodics [ev_active (w)]);
2203 upheap (periodics, ev_active (w)); 2653 upheap (periodics, ev_active (w));
2204 2654
2205 EV_FREQUENT_CHECK; 2655 EV_FREQUENT_CHECK;
2206 2656
2207 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2657 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2208} 2658}
2209 2659
2210void noinline 2660void noinline
2211ev_periodic_stop (EV_P_ ev_periodic *w) 2661ev_periodic_stop (EV_P_ ev_periodic *w)
2212{ 2662{
… …
2217 EV_FREQUENT_CHECK; 2667 EV_FREQUENT_CHECK;
2218 2668
2219 { 2669 {
2220 int active = ev_active (w); 2670 int active = ev_active (w);
2221 2671
2222 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2672 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2223 2673
2224 --periodiccnt; 2674 --periodiccnt;
2225 2675
2226 if (expect_true (active < periodiccnt + HEAP0)) 2676 if (expect_true (active < periodiccnt + HEAP0))
2227 { 2677 {
… …
2249#endif 2699#endif
2250 2700
2251void noinline 2701void noinline
2252ev_signal_start (EV_P_ ev_signal *w) 2702ev_signal_start (EV_P_ ev_signal *w)
2253{ 2703{
2254#if EV_MULTIPLICITY
2255 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2256#endif
2257 if (expect_false (ev_is_active (w))) 2704 if (expect_false (ev_is_active (w)))
2258 return; 2705 return;
2259 2706
2260 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2707 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2261 2708
2262 evpipe_init (EV_A); 2709#if EV_MULTIPLICITY
2710 assert (("libev: a signal must not be attached to two different loops",
2711 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2263 2712
2264 EV_FREQUENT_CHECK; 2713 signals [w->signum - 1].loop = EV_A;
2714#endif
2265 2715
2716 EV_FREQUENT_CHECK;
2717
2718#if EV_USE_SIGNALFD
2719 if (sigfd == -2)
2266 { 2720 {
2267#ifndef _WIN32 2721 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2268 sigset_t full, prev; 2722 if (sigfd < 0 && errno == EINVAL)
2269 sigfillset (&full); 2723 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2270 sigprocmask (SIG_SETMASK, &full, &prev);
2271#endif
2272 2724
2273 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2725 if (sigfd >= 0)
2726 {
2727 fd_intern (sigfd); /* doing it twice will not hurt */
2274 2728
2275#ifndef _WIN32 2729 sigemptyset (&sigfd_set);
2276 sigprocmask (SIG_SETMASK, &prev, 0); 2730
2277#endif 2731 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2732 ev_set_priority (&sigfd_w, EV_MAXPRI);
2733 ev_io_start (EV_A_ &sigfd_w);
2734 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2735 }
2278 } 2736 }
2737
2738 if (sigfd >= 0)
2739 {
2740 /* TODO: check .head */
2741 sigaddset (&sigfd_set, w->signum);
2742 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2743
2744 signalfd (sigfd, &sigfd_set, 0);
2745 }
2746#endif
2279 2747
2280 ev_start (EV_A_ (W)w, 1); 2748 ev_start (EV_A_ (W)w, 1);
2281 wlist_add (&signals [w->signum - 1].head, (WL)w); 2749 wlist_add (&signals [w->signum - 1].head, (WL)w);
2282 2750
2283 if (!((WL)w)->next) 2751 if (!((WL)w)->next)
2752# if EV_USE_SIGNALFD
2753 if (sigfd < 0) /*TODO*/
2754# endif
2284 { 2755 {
2285#if _WIN32 2756# if _WIN32
2286 signal (w->signum, ev_sighandler); 2757 signal (w->signum, ev_sighandler);
2287#else 2758# else
2288 struct sigaction sa; 2759 struct sigaction sa;
2760
2761 evpipe_init (EV_A);
2762
2289 sa.sa_handler = ev_sighandler; 2763 sa.sa_handler = ev_sighandler;
2290 sigfillset (&sa.sa_mask); 2764 sigfillset (&sa.sa_mask);
2291 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2765 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2292 sigaction (w->signum, &sa, 0); 2766 sigaction (w->signum, &sa, 0);
2767
2768 sigemptyset (&sa.sa_mask);
2769 sigaddset (&sa.sa_mask, w->signum);
2770 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2293#endif 2771#endif
2294 } 2772 }
2295 2773
2296 EV_FREQUENT_CHECK; 2774 EV_FREQUENT_CHECK;
2297} 2775}
2298 2776
2299void noinline 2777void noinline
… …
2307 2785
2308 wlist_del (&signals [w->signum - 1].head, (WL)w); 2786 wlist_del (&signals [w->signum - 1].head, (WL)w);
2309 ev_stop (EV_A_ (W)w); 2787 ev_stop (EV_A_ (W)w);
2310 2788
2311 if (!signals [w->signum - 1].head) 2789 if (!signals [w->signum - 1].head)
2790 {
2791#if EV_MULTIPLICITY
2792 signals [w->signum - 1].loop = 0; /* unattach from signal */
2793#endif
2794#if EV_USE_SIGNALFD
2795 if (sigfd >= 0)
2796 {
2797 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D
2798 sigdelset (&sigfd_set, w->signum);
2799 signalfd (sigfd, &sigfd_set, 0);
2800 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D
2801 /*TODO: maybe unblock signal? */
2802 }
2803 else
2804#endif
2312 signal (w->signum, SIG_DFL); 2805 signal (w->signum, SIG_DFL);
2806 }
2313 2807
2314 EV_FREQUENT_CHECK; 2808 EV_FREQUENT_CHECK;
2315} 2809}
2316 2810
2317void 2811void
2318ev_child_start (EV_P_ ev_child *w) 2812ev_child_start (EV_P_ ev_child *w)
2319{ 2813{
2320#if EV_MULTIPLICITY 2814#if EV_MULTIPLICITY
2321 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2815 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2322#endif 2816#endif
2323 if (expect_false (ev_is_active (w))) 2817 if (expect_false (ev_is_active (w)))
2324 return; 2818 return;
2325 2819
2326 EV_FREQUENT_CHECK; 2820 EV_FREQUENT_CHECK;
… …
2351# ifdef _WIN32 2845# ifdef _WIN32
2352# undef lstat 2846# undef lstat
2353# define lstat(a,b) _stati64 (a,b) 2847# define lstat(a,b) _stati64 (a,b)
2354# endif 2848# endif
2355 2849
2356#define DEF_STAT_INTERVAL 5.0074891 2850#define DEF_STAT_INTERVAL 5.0074891
2851#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2357#define MIN_STAT_INTERVAL 0.1074891 2852#define MIN_STAT_INTERVAL 0.1074891
2358 2853
2359static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2854static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2360 2855
2361#if EV_USE_INOTIFY 2856#if EV_USE_INOTIFY
2362# define EV_INOTIFY_BUFSIZE 8192 2857# define EV_INOTIFY_BUFSIZE 8192
… …
2366{ 2861{
2367 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 2862 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2368 2863
2369 if (w->wd < 0) 2864 if (w->wd < 0)
2370 { 2865 {
2866 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2371 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2867 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2372 2868
2373 /* monitor some parent directory for speedup hints */ 2869 /* monitor some parent directory for speedup hints */
2374 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2870 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2375 /* but an efficiency issue only */ 2871 /* but an efficiency issue only */
2376 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2872 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2377 { 2873 {
2378 char path [4096]; 2874 char path [4096];
2379 strcpy (path, w->path); 2875 strcpy (path, w->path);
… …
2383 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2879 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2384 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2880 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2385 2881
2386 char *pend = strrchr (path, '/'); 2882 char *pend = strrchr (path, '/');
2387 2883
2388 if (!pend) 2884 if (!pend || pend == path)
2389 break; /* whoops, no '/', complain to your admin */ 2885 break;
2390 2886
2391 *pend = 0; 2887 *pend = 0;
2392 w->wd = inotify_add_watch (fs_fd, path, mask); 2888 w->wd = inotify_add_watch (fs_fd, path, mask);
2393 } 2889 }
2394 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2890 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2395 } 2891 }
2396 } 2892 }
2397 else
2398 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2399 2893
2400 if (w->wd >= 0) 2894 if (w->wd >= 0)
2895 {
2896 struct statfs sfs;
2897
2401 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2898 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2899
2900 /* now local changes will be tracked by inotify, but remote changes won't */
2901 /* unless the filesystem it known to be local, we therefore still poll */
2902 /* also do poll on <2.6.25, but with normal frequency */
2903
2904 if (fs_2625 && !statfs (w->path, &sfs))
2905 if (sfs.f_type == 0x1373 /* devfs */
2906 || sfs.f_type == 0xEF53 /* ext2/3 */
2907 || sfs.f_type == 0x3153464a /* jfs */
2908 || sfs.f_type == 0x52654973 /* reiser3 */
2909 || sfs.f_type == 0x01021994 /* tempfs */
2910 || sfs.f_type == 0x58465342 /* xfs */)
2911 return;
2912
2913 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2914 ev_timer_again (EV_A_ &w->timer);
2915 }
2402} 2916}
2403 2917
2404static void noinline 2918static void noinline
2405infy_del (EV_P_ ev_stat *w) 2919infy_del (EV_P_ ev_stat *w)
2406{ 2920{
… …
2420 2934
2421static void noinline 2935static void noinline
2422infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2936infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2423{ 2937{
2424 if (slot < 0) 2938 if (slot < 0)
2425 /* overflow, need to check for all hahs slots */ 2939 /* overflow, need to check for all hash slots */
2426 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2940 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2427 infy_wd (EV_A_ slot, wd, ev); 2941 infy_wd (EV_A_ slot, wd, ev);
2428 else 2942 else
2429 { 2943 {
2430 WL w_; 2944 WL w_;
… …
2436 2950
2437 if (w->wd == wd || wd == -1) 2951 if (w->wd == wd || wd == -1)
2438 { 2952 {
2439 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2953 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2440 { 2954 {
2955 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2441 w->wd = -1; 2956 w->wd = -1;
2442 infy_add (EV_A_ w); /* re-add, no matter what */ 2957 infy_add (EV_A_ w); /* re-add, no matter what */
2443 } 2958 }
2444 2959
2445 stat_timer_cb (EV_A_ &w->timer, 0); 2960 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2458 2973
2459 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 2974 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2460 infy_wd (EV_A_ ev->wd, ev->wd, ev); 2975 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2461} 2976}
2462 2977
2463void inline_size 2978inline_size void
2979check_2625 (EV_P)
2980{
2981 /* kernels < 2.6.25 are borked
2982 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2983 */
2984 struct utsname buf;
2985 int major, minor, micro;
2986
2987 if (uname (&buf))
2988 return;
2989
2990 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2991 return;
2992
2993 if (major < 2
2994 || (major == 2 && minor < 6)
2995 || (major == 2 && minor == 6 && micro < 25))
2996 return;
2997
2998 fs_2625 = 1;
2999}
3000
3001inline_size int
3002infy_newfd (void)
3003{
3004#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3005 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3006 if (fd >= 0)
3007 return fd;
3008#endif
3009 return inotify_init ();
3010}
3011
3012inline_size void
2464infy_init (EV_P) 3013infy_init (EV_P)
2465{ 3014{
2466 if (fs_fd != -2) 3015 if (fs_fd != -2)
2467 return; 3016 return;
2468 3017
3018 fs_fd = -1;
3019
3020 check_2625 (EV_A);
3021
2469 fs_fd = inotify_init (); 3022 fs_fd = infy_newfd ();
2470 3023
2471 if (fs_fd >= 0) 3024 if (fs_fd >= 0)
2472 { 3025 {
3026 fd_intern (fs_fd);
2473 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3027 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2474 ev_set_priority (&fs_w, EV_MAXPRI); 3028 ev_set_priority (&fs_w, EV_MAXPRI);
2475 ev_io_start (EV_A_ &fs_w); 3029 ev_io_start (EV_A_ &fs_w);
2476 } 3030 }
2477} 3031}
2478 3032
2479void inline_size 3033inline_size void
2480infy_fork (EV_P) 3034infy_fork (EV_P)
2481{ 3035{
2482 int slot; 3036 int slot;
2483 3037
2484 if (fs_fd < 0) 3038 if (fs_fd < 0)
2485 return; 3039 return;
2486 3040
3041 ev_io_stop (EV_A_ &fs_w);
2487 close (fs_fd); 3042 close (fs_fd);
2488 fs_fd = inotify_init (); 3043 fs_fd = infy_newfd ();
3044
3045 if (fs_fd >= 0)
3046 {
3047 fd_intern (fs_fd);
3048 ev_io_set (&fs_w, fs_fd, EV_READ);
3049 ev_io_start (EV_A_ &fs_w);
3050 }
2489 3051
2490 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3052 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2491 { 3053 {
2492 WL w_ = fs_hash [slot].head; 3054 WL w_ = fs_hash [slot].head;
2493 fs_hash [slot].head = 0; 3055 fs_hash [slot].head = 0;
… …
2500 w->wd = -1; 3062 w->wd = -1;
2501 3063
2502 if (fs_fd >= 0) 3064 if (fs_fd >= 0)
2503 infy_add (EV_A_ w); /* re-add, no matter what */ 3065 infy_add (EV_A_ w); /* re-add, no matter what */
2504 else 3066 else
2505 ev_timer_start (EV_A_ &w->timer); 3067 ev_timer_again (EV_A_ &w->timer);
2506 } 3068 }
2507
2508 } 3069 }
2509} 3070}
2510 3071
3072#endif
3073
3074#ifdef _WIN32
3075# define EV_LSTAT(p,b) _stati64 (p, b)
3076#else
3077# define EV_LSTAT(p,b) lstat (p, b)
2511#endif 3078#endif
2512 3079
2513void 3080void
2514ev_stat_stat (EV_P_ ev_stat *w) 3081ev_stat_stat (EV_P_ ev_stat *w)
2515{ 3082{
… …
2542 || w->prev.st_atime != w->attr.st_atime 3109 || w->prev.st_atime != w->attr.st_atime
2543 || w->prev.st_mtime != w->attr.st_mtime 3110 || w->prev.st_mtime != w->attr.st_mtime
2544 || w->prev.st_ctime != w->attr.st_ctime 3111 || w->prev.st_ctime != w->attr.st_ctime
2545 ) { 3112 ) {
2546 #if EV_USE_INOTIFY 3113 #if EV_USE_INOTIFY
3114 if (fs_fd >= 0)
3115 {
2547 infy_del (EV_A_ w); 3116 infy_del (EV_A_ w);
2548 infy_add (EV_A_ w); 3117 infy_add (EV_A_ w);
2549 ev_stat_stat (EV_A_ w); /* avoid race... */ 3118 ev_stat_stat (EV_A_ w); /* avoid race... */
3119 }
2550 #endif 3120 #endif
2551 3121
2552 ev_feed_event (EV_A_ w, EV_STAT); 3122 ev_feed_event (EV_A_ w, EV_STAT);
2553 } 3123 }
2554} 3124}
… …
2557ev_stat_start (EV_P_ ev_stat *w) 3127ev_stat_start (EV_P_ ev_stat *w)
2558{ 3128{
2559 if (expect_false (ev_is_active (w))) 3129 if (expect_false (ev_is_active (w)))
2560 return; 3130 return;
2561 3131
2562 /* since we use memcmp, we need to clear any padding data etc. */
2563 memset (&w->prev, 0, sizeof (ev_statdata));
2564 memset (&w->attr, 0, sizeof (ev_statdata));
2565
2566 ev_stat_stat (EV_A_ w); 3132 ev_stat_stat (EV_A_ w);
2567 3133
3134 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2568 if (w->interval < MIN_STAT_INTERVAL) 3135 w->interval = MIN_STAT_INTERVAL;
2569 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2570 3136
2571 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3137 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2572 ev_set_priority (&w->timer, ev_priority (w)); 3138 ev_set_priority (&w->timer, ev_priority (w));
2573 3139
2574#if EV_USE_INOTIFY 3140#if EV_USE_INOTIFY
2575 infy_init (EV_A); 3141 infy_init (EV_A);
2576 3142
2577 if (fs_fd >= 0) 3143 if (fs_fd >= 0)
2578 infy_add (EV_A_ w); 3144 infy_add (EV_A_ w);
2579 else 3145 else
2580#endif 3146#endif
2581 ev_timer_start (EV_A_ &w->timer); 3147 ev_timer_again (EV_A_ &w->timer);
2582 3148
2583 ev_start (EV_A_ (W)w, 1); 3149 ev_start (EV_A_ (W)w, 1);
2584 3150
2585 EV_FREQUENT_CHECK; 3151 EV_FREQUENT_CHECK;
2586} 3152}
… …
2746embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3312embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2747{ 3313{
2748 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3314 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2749 3315
2750 { 3316 {
2751 struct ev_loop *loop = w->other; 3317 EV_P = w->other;
2752 3318
2753 while (fdchangecnt) 3319 while (fdchangecnt)
2754 { 3320 {
2755 fd_reify (EV_A); 3321 fd_reify (EV_A);
2756 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3322 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2757 } 3323 }
2758 } 3324 }
2759} 3325}
2760 3326
3327static void
3328embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3329{
3330 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3331
3332 ev_embed_stop (EV_A_ w);
3333
3334 {
3335 EV_P = w->other;
3336
3337 ev_loop_fork (EV_A);
3338 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3339 }
3340
3341 ev_embed_start (EV_A_ w);
3342}
3343
2761#if 0 3344#if 0
2762static void 3345static void
2763embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3346embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2764{ 3347{
2765 ev_idle_stop (EV_A_ idle); 3348 ev_idle_stop (EV_A_ idle);
… …
2771{ 3354{
2772 if (expect_false (ev_is_active (w))) 3355 if (expect_false (ev_is_active (w)))
2773 return; 3356 return;
2774 3357
2775 { 3358 {
2776 struct ev_loop *loop = w->other; 3359 EV_P = w->other;
2777 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3360 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2778 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3361 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2779 } 3362 }
2780 3363
2781 EV_FREQUENT_CHECK; 3364 EV_FREQUENT_CHECK;
2782 3365
… …
2785 3368
2786 ev_prepare_init (&w->prepare, embed_prepare_cb); 3369 ev_prepare_init (&w->prepare, embed_prepare_cb);
2787 ev_set_priority (&w->prepare, EV_MINPRI); 3370 ev_set_priority (&w->prepare, EV_MINPRI);
2788 ev_prepare_start (EV_A_ &w->prepare); 3371 ev_prepare_start (EV_A_ &w->prepare);
2789 3372
3373 ev_fork_init (&w->fork, embed_fork_cb);
3374 ev_fork_start (EV_A_ &w->fork);
3375
2790 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3376 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2791 3377
2792 ev_start (EV_A_ (W)w, 1); 3378 ev_start (EV_A_ (W)w, 1);
2793 3379
2794 EV_FREQUENT_CHECK; 3380 EV_FREQUENT_CHECK;
… …
2801 if (expect_false (!ev_is_active (w))) 3387 if (expect_false (!ev_is_active (w)))
2802 return; 3388 return;
2803 3389
2804 EV_FREQUENT_CHECK; 3390 EV_FREQUENT_CHECK;
2805 3391
2806 ev_io_stop (EV_A_ &w->io); 3392 ev_io_stop (EV_A_ &w->io);
2807 ev_prepare_stop (EV_A_ &w->prepare); 3393 ev_prepare_stop (EV_A_ &w->prepare);
2808 3394 ev_fork_stop (EV_A_ &w->fork);
2809 ev_stop (EV_A_ (W)w);
2810 3395
2811 EV_FREQUENT_CHECK; 3396 EV_FREQUENT_CHECK;
2812} 3397}
2813#endif 3398#endif
2814 3399
… …
2891 3476
2892void 3477void
2893ev_async_send (EV_P_ ev_async *w) 3478ev_async_send (EV_P_ ev_async *w)
2894{ 3479{
2895 w->sent = 1; 3480 w->sent = 1;
2896 evpipe_write (EV_A_ &gotasync); 3481 evpipe_write (EV_A_ &async_pending);
2897} 3482}
2898#endif 3483#endif
2899 3484
2900/*****************************************************************************/ 3485/*****************************************************************************/
2901 3486
… …
2911once_cb (EV_P_ struct ev_once *once, int revents) 3496once_cb (EV_P_ struct ev_once *once, int revents)
2912{ 3497{
2913 void (*cb)(int revents, void *arg) = once->cb; 3498 void (*cb)(int revents, void *arg) = once->cb;
2914 void *arg = once->arg; 3499 void *arg = once->arg;
2915 3500
2916 ev_io_stop (EV_A_ &once->io); 3501 ev_io_stop (EV_A_ &once->io);
2917 ev_timer_stop (EV_A_ &once->to); 3502 ev_timer_stop (EV_A_ &once->to);
2918 ev_free (once); 3503 ev_free (once);
2919 3504
2920 cb (revents, arg); 3505 cb (revents, arg);
2921} 3506}
2922 3507
2923static void 3508static void
2924once_cb_io (EV_P_ ev_io *w, int revents) 3509once_cb_io (EV_P_ ev_io *w, int revents)
2925{ 3510{
2926 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3511 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3512
3513 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2927} 3514}
2928 3515
2929static void 3516static void
2930once_cb_to (EV_P_ ev_timer *w, int revents) 3517once_cb_to (EV_P_ ev_timer *w, int revents)
2931{ 3518{
2932 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3519 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3520
3521 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2933} 3522}
2934 3523
2935void 3524void
2936ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3525ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2937{ 3526{
… …
2959 ev_timer_set (&once->to, timeout, 0.); 3548 ev_timer_set (&once->to, timeout, 0.);
2960 ev_timer_start (EV_A_ &once->to); 3549 ev_timer_start (EV_A_ &once->to);
2961 } 3550 }
2962} 3551}
2963 3552
3553/*****************************************************************************/
3554
3555#if EV_WALK_ENABLE
3556void
3557ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3558{
3559 int i, j;
3560 ev_watcher_list *wl, *wn;
3561
3562 if (types & (EV_IO | EV_EMBED))
3563 for (i = 0; i < anfdmax; ++i)
3564 for (wl = anfds [i].head; wl; )
3565 {
3566 wn = wl->next;
3567
3568#if EV_EMBED_ENABLE
3569 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3570 {
3571 if (types & EV_EMBED)
3572 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3573 }
3574 else
3575#endif
3576#if EV_USE_INOTIFY
3577 if (ev_cb ((ev_io *)wl) == infy_cb)
3578 ;
3579 else
3580#endif
3581 if ((ev_io *)wl != &pipe_w)
3582 if (types & EV_IO)
3583 cb (EV_A_ EV_IO, wl);
3584
3585 wl = wn;
3586 }
3587
3588 if (types & (EV_TIMER | EV_STAT))
3589 for (i = timercnt + HEAP0; i-- > HEAP0; )
3590#if EV_STAT_ENABLE
3591 /*TODO: timer is not always active*/
3592 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3593 {
3594 if (types & EV_STAT)
3595 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3596 }
3597 else
3598#endif
3599 if (types & EV_TIMER)
3600 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3601
3602#if EV_PERIODIC_ENABLE
3603 if (types & EV_PERIODIC)
3604 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3605 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3606#endif
3607
3608#if EV_IDLE_ENABLE
3609 if (types & EV_IDLE)
3610 for (j = NUMPRI; i--; )
3611 for (i = idlecnt [j]; i--; )
3612 cb (EV_A_ EV_IDLE, idles [j][i]);
3613#endif
3614
3615#if EV_FORK_ENABLE
3616 if (types & EV_FORK)
3617 for (i = forkcnt; i--; )
3618 if (ev_cb (forks [i]) != embed_fork_cb)
3619 cb (EV_A_ EV_FORK, forks [i]);
3620#endif
3621
3622#if EV_ASYNC_ENABLE
3623 if (types & EV_ASYNC)
3624 for (i = asynccnt; i--; )
3625 cb (EV_A_ EV_ASYNC, asyncs [i]);
3626#endif
3627
3628 if (types & EV_PREPARE)
3629 for (i = preparecnt; i--; )
3630#if EV_EMBED_ENABLE
3631 if (ev_cb (prepares [i]) != embed_prepare_cb)
3632#endif
3633 cb (EV_A_ EV_PREPARE, prepares [i]);
3634
3635 if (types & EV_CHECK)
3636 for (i = checkcnt; i--; )
3637 cb (EV_A_ EV_CHECK, checks [i]);
3638
3639 if (types & EV_SIGNAL)
3640 for (i = 0; i < EV_NSIG - 1; ++i)
3641 for (wl = signals [i].head; wl; )
3642 {
3643 wn = wl->next;
3644 cb (EV_A_ EV_SIGNAL, wl);
3645 wl = wn;
3646 }
3647
3648 if (types & EV_CHILD)
3649 for (i = EV_PID_HASHSIZE; i--; )
3650 for (wl = childs [i]; wl; )
3651 {
3652 wn = wl->next;
3653 cb (EV_A_ EV_CHILD, wl);
3654 wl = wn;
3655 }
3656/* EV_STAT 0x00001000 /* stat data changed */
3657/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3658}
3659#endif
3660
2964#if EV_MULTIPLICITY 3661#if EV_MULTIPLICITY
2965 #include "ev_wrap.h" 3662 #include "ev_wrap.h"
2966#endif 3663#endif
2967 3664
2968#ifdef __cplusplus 3665#ifdef __cplusplus

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