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Comparing libev/ev.c (file contents):
Revision 1.248 by root, Wed May 21 23:25:21 2008 UTC vs.
Revision 1.288 by root, Sat Apr 25 14:12:48 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	# endif
		63
52	# if HAVE_CLOCK_GETTIME	64	# if HAVE_CLOCK_GETTIME
53	# ifndef EV_USE_MONOTONIC	65	# ifndef EV_USE_MONOTONIC
54	# define EV_USE_MONOTONIC 1	66	# define EV_USE_MONOTONIC 1
55	# endif	67	# endif
56	# ifndef EV_USE_REALTIME	68	# ifndef EV_USE_REALTIME
57	# define EV_USE_REALTIME 1	69	# define EV_USE_REALTIME 0
58	# endif	70	# endif
59	# else	71	# else
60	# ifndef EV_USE_MONOTONIC	72	# ifndef EV_USE_MONOTONIC
61	# define EV_USE_MONOTONIC 0	73	# define EV_USE_MONOTONIC 0
62	# endif	74	# endif
…		…
126	# define EV_USE_EVENTFD 1	138	# define EV_USE_EVENTFD 1
127	# else	139	# else
128	# define EV_USE_EVENTFD 0	140	# define EV_USE_EVENTFD 0
129	# endif	141	# endif
130	# endif	142	# endif
131		143
132	#endif	144	#endif
133		145
134	#include <math.h>	146	#include <math.h>
135	#include <stdlib.h>	147	#include <stdlib.h>
136	#include <fcntl.h>	148	#include <fcntl.h>
…		…
154	#ifndef _WIN32	166	#ifndef _WIN32
155	# include <sys/time.h>	167	# include <sys/time.h>
156	# include <sys/wait.h>	168	# include <sys/wait.h>
157	# include <unistd.h>	169	# include <unistd.h>
158	#else	170	#else
		171	# include <io.h>
159	# define WIN32_LEAN_AND_MEAN	172	# define WIN32_LEAN_AND_MEAN
160	# include <windows.h>	173	# include <windows.h>
161	# ifndef EV_SELECT_IS_WINSOCKET	174	# ifndef EV_SELECT_IS_WINSOCKET
162	# define EV_SELECT_IS_WINSOCKET 1	175	# define EV_SELECT_IS_WINSOCKET 1
163	# endif	176	# endif
164	#endif	177	#endif
165		178
166	/* this block tries to deduce configuration from header-defined symbols and defaults */	179	/* this block tries to deduce configuration from header-defined symbols and defaults */
167		180
		181	#ifndef EV_USE_CLOCK_SYSCALL
		182	# if __linux && __GLIBC__ >= 2
		183	# define EV_USE_CLOCK_SYSCALL 1
		184	# else
		185	# define EV_USE_CLOCK_SYSCALL 0
		186	# endif
		187	#endif
		188
168	#ifndef EV_USE_MONOTONIC	189	#ifndef EV_USE_MONOTONIC
		190	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
		191	# define EV_USE_MONOTONIC 1
		192	# else
169	# define EV_USE_MONOTONIC 0	193	# define EV_USE_MONOTONIC 0
		194	# endif
170	#endif	195	#endif
171		196
172	#ifndef EV_USE_REALTIME	197	#ifndef EV_USE_REALTIME
173	# define EV_USE_REALTIME 0	198	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174	#endif	199	#endif
175		200
176	#ifndef EV_USE_NANOSLEEP	201	#ifndef EV_USE_NANOSLEEP
		202	# if _POSIX_C_SOURCE >= 199309L
		203	# define EV_USE_NANOSLEEP 1
		204	# else
177	# define EV_USE_NANOSLEEP 0	205	# define EV_USE_NANOSLEEP 0
		206	# endif
178	#endif	207	#endif
179		208
180	#ifndef EV_USE_SELECT	209	#ifndef EV_USE_SELECT
181	# define EV_USE_SELECT 1	210	# define EV_USE_SELECT 1
182	#endif	211	#endif
…		…
235	# else	264	# else
236	# define EV_USE_EVENTFD 0	265	# define EV_USE_EVENTFD 0
237	# endif	266	# endif
238	#endif	267	#endif
239		268
		269	#if 0 /* debugging */
		270	# define EV_VERIFY 3
		271	# define EV_USE_4HEAP 1
		272	# define EV_HEAP_CACHE_AT 1
		273	#endif
		274
		275	#ifndef EV_VERIFY
		276	# define EV_VERIFY !EV_MINIMAL
		277	#endif
		278
240	#ifndef EV_USE_4HEAP	279	#ifndef EV_USE_4HEAP
241	# define EV_USE_4HEAP !EV_MINIMAL	280	# define EV_USE_4HEAP !EV_MINIMAL
242	#endif	281	#endif
243		282
244	#ifndef EV_HEAP_CACHE_AT	283	#ifndef EV_HEAP_CACHE_AT
…		…
267	# include <sys/select.h>	306	# include <sys/select.h>
268	# endif	307	# endif
269	#endif	308	#endif
270		309
271	#if EV_USE_INOTIFY	310	#if EV_USE_INOTIFY
		311	# include <sys/utsname.h>
		312	# include <sys/statfs.h>
272	# include <sys/inotify.h>	313	# include <sys/inotify.h>
		314	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
		315	# ifndef IN_DONT_FOLLOW
		316	# undef EV_USE_INOTIFY
		317	# define EV_USE_INOTIFY 0
		318	# endif
273	#endif	319	#endif
274		320
275	#if EV_SELECT_IS_WINSOCKET	321	#if EV_SELECT_IS_WINSOCKET
276	# include <winsock.h>	322	# include <winsock.h>
		323	#endif
		324
		325	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		326	/* which makes programs even slower. might work on other unices, too. */
		327	#if EV_USE_CLOCK_SYSCALL
		328	# include <syscall.h>
		329	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		330	# undef EV_USE_MONOTONIC
		331	# define EV_USE_MONOTONIC 1
277	#endif	332	#endif
278		333
279	#if EV_USE_EVENTFD	334	#if EV_USE_EVENTFD
280	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	335	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
281	# include <stdint.h>	336	# include <stdint.h>
…		…
288	# endif	343	# endif
289	#endif	344	#endif
290		345
291	/**/	346	/**/
292		347
293	/* undefined or zero: no verification done or available */
294	/* 1 or higher: ev_loop_verify function available */
295	/* 2 or higher: ev_loop_verify is called frequently */
296	#define EV_VERIFY 1
297
298	#if EV_VERIFY > 1	348	#if EV_VERIFY >= 3
299	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)	349	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
300	#else	350	#else
301	# define EV_FREQUENT_CHECK do { } while (0)	351	# define EV_FREQUENT_CHECK do { } while (0)
302	#endif	352	#endif
303		353
…		…
347	typedef ev_watcher_time *WT;	397	typedef ev_watcher_time *WT;
348		398
349	#define ev_active(w) ((W)(w))->active	399	#define ev_active(w) ((W)(w))->active
350	#define ev_at(w) ((WT)(w))->at	400	#define ev_at(w) ((WT)(w))->at
351		401
352	#if EV_USE_MONOTONIC	402	#if EV_USE_REALTIME
353	/* sig_atomic_t is used to avoid per-thread variables or locking but still */	403	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
354	/* giving it a reasonably high chance of working on typical architetcures */	404	/* giving it a reasonably high chance of working on typical architetcures */
		405	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		406	#endif
		407
		408	#if EV_USE_MONOTONIC
355	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	409	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
356	#endif	410	#endif
357		411
358	#ifdef _WIN32	412	#ifdef _WIN32
359	# include "ev_win32.c"	413	# include "ev_win32.c"
…		…
368	{	422	{
369	syserr_cb = cb;	423	syserr_cb = cb;
370	}	424	}
371		425
372	static void noinline	426	static void noinline
373	syserr (const char *msg)	427	ev_syserr (const char *msg)
374	{	428	{
375	if (!msg)	429	if (!msg)
376	msg = "(libev) system error";	430	msg = "(libev) system error";
377		431
378	if (syserr_cb)	432	if (syserr_cb)
…		…
424	#define ev_malloc(size) ev_realloc (0, (size))	478	#define ev_malloc(size) ev_realloc (0, (size))
425	#define ev_free(ptr) ev_realloc ((ptr), 0)	479	#define ev_free(ptr) ev_realloc ((ptr), 0)
426		480
427	/*****************************************************************************/	481	/*****************************************************************************/
428		482
		483	/* file descriptor info structure */
429	typedef struct	484	typedef struct
430	{	485	{
431	WL head;	486	WL head;
432	unsigned char events;	487	unsigned char events; /* the events watched for */
		488	unsigned char reify; /* flag set when this ANFD needs reification */
		489	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
433	unsigned char reify;	490	unsigned char unused;
		491	#if EV_USE_EPOLL
		492	unsigned int egen; /* generation counter to counter epoll bugs */
		493	#endif
434	#if EV_SELECT_IS_WINSOCKET	494	#if EV_SELECT_IS_WINSOCKET
435	SOCKET handle;	495	SOCKET handle;
436	#endif	496	#endif
437	} ANFD;	497	} ANFD;
438		498
		499	/* stores the pending event set for a given watcher */
439	typedef struct	500	typedef struct
440	{	501	{
441	W w;	502	W w;
442	int events;	503	int events; /* the pending event set for the given watcher */
443	} ANPENDING;	504	} ANPENDING;
444		505
445	#if EV_USE_INOTIFY	506	#if EV_USE_INOTIFY
446	/* hash table entry per inotify-id */	507	/* hash table entry per inotify-id */
447	typedef struct	508	typedef struct
…		…
450	} ANFS;	511	} ANFS;
451	#endif	512	#endif
452		513
453	/* Heap Entry */	514	/* Heap Entry */
454	#if EV_HEAP_CACHE_AT	515	#if EV_HEAP_CACHE_AT
		516	/* a heap element */
455	typedef struct {	517	typedef struct {
456	ev_tstamp at;	518	ev_tstamp at;
457	WT w;	519	WT w;
458	} ANHE;	520	} ANHE;
459		521
460	#define ANHE_w(he) (he).w /* access watcher, read-write */	522	#define ANHE_w(he) (he).w /* access watcher, read-write */
461	#define ANHE_at(he) (he).at /* access cached at, read-only */	523	#define ANHE_at(he) (he).at /* access cached at, read-only */
462	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */	524	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
463	#else	525	#else
		526	/* a heap element */
464	typedef WT ANHE;	527	typedef WT ANHE;
465		528
466	#define ANHE_w(he) (he)	529	#define ANHE_w(he) (he)
467	#define ANHE_at(he) (he)->at	530	#define ANHE_at(he) (he)->at
468	#define ANHE_at_cache(he)	531	#define ANHE_at_cache(he)
…		…
498		561
499	ev_tstamp	562	ev_tstamp
500	ev_time (void)	563	ev_time (void)
501	{	564	{
502	#if EV_USE_REALTIME	565	#if EV_USE_REALTIME
		566	if (expect_true (have_realtime))
		567	{
503	struct timespec ts;	568	struct timespec ts;
504	clock_gettime (CLOCK_REALTIME, &ts);	569	clock_gettime (CLOCK_REALTIME, &ts);
505	return ts.tv_sec + ts.tv_nsec * 1e-9;	570	return ts.tv_sec + ts.tv_nsec * 1e-9;
506	#else	571	}
		572	#endif
		573
507	struct timeval tv;	574	struct timeval tv;
508	gettimeofday (&tv, 0);	575	gettimeofday (&tv, 0);
509	return tv.tv_sec + tv.tv_usec * 1e-6;	576	return tv.tv_sec + tv.tv_usec * 1e-6;
510	#endif
511	}	577	}
512		578
513	ev_tstamp inline_size	579	inline_size ev_tstamp
514	get_clock (void)	580	get_clock (void)
515	{	581	{
516	#if EV_USE_MONOTONIC	582	#if EV_USE_MONOTONIC
517	if (expect_true (have_monotonic))	583	if (expect_true (have_monotonic))
518	{	584	{
…		…
551	struct timeval tv;	617	struct timeval tv;
552		618
553	tv.tv_sec = (time_t)delay;	619	tv.tv_sec = (time_t)delay;
554	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	620	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
555		621
		622	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		623	/* somehting nto guaranteed by newer posix versions, but guaranteed */
		624	/* by older ones */
556	select (0, 0, 0, 0, &tv);	625	select (0, 0, 0, 0, &tv);
557	#endif	626	#endif
558	}	627	}
559	}	628	}
560		629
561	/*****************************************************************************/	630	/*****************************************************************************/
562		631
563	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	632	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
564		633
565	int inline_size	634	/* find a suitable new size for the given array, */
		635	/* hopefully by rounding to a ncie-to-malloc size */
		636	inline_size int
566	array_nextsize (int elem, int cur, int cnt)	637	array_nextsize (int elem, int cur, int cnt)
567	{	638	{
568	int ncur = cur + 1;	639	int ncur = cur + 1;
569		640
570	do	641	do
…		…
587	array_realloc (int elem, void *base, int *cur, int cnt)	658	array_realloc (int elem, void *base, int *cur, int cnt)
588	{	659	{
589	*cur = array_nextsize (elem, *cur, cnt);	660	*cur = array_nextsize (elem, *cur, cnt);
590	return ev_realloc (base, elem * *cur);	661	return ev_realloc (base, elem * *cur);
591	}	662	}
		663
		664	#define array_init_zero(base,count) \
		665	memset ((void *)(base), 0, sizeof (*(base)) * (count))
592		666
593	#define array_needsize(type,base,cur,cnt,init) \	667	#define array_needsize(type,base,cur,cnt,init) \
594	if (expect_false ((cnt) > (cur))) \	668	if (expect_false ((cnt) > (cur))) \
595	{ \	669	{ \
596	int ocur_ = (cur); \	670	int ocur_ = (cur); \
…		…
608	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	682	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
609	}	683	}
610	#endif	684	#endif
611		685
612	#define array_free(stem, idx) \	686	#define array_free(stem, idx) \
613	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	687	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
614		688
615	/*****************************************************************************/	689	/*****************************************************************************/
		690
		691	/* dummy callback for pending events */
		692	static void noinline
		693	pendingcb (EV_P_ ev_prepare *w, int revents)
		694	{
		695	}
616		696
617	void noinline	697	void noinline
618	ev_feed_event (EV_P_ void *w, int revents)	698	ev_feed_event (EV_P_ void *w, int revents)
619	{	699	{
620	W w_ = (W)w;	700	W w_ = (W)w;
…		…
629	pendings [pri][w_->pending - 1].w = w_;	709	pendings [pri][w_->pending - 1].w = w_;
630	pendings [pri][w_->pending - 1].events = revents;	710	pendings [pri][w_->pending - 1].events = revents;
631	}	711	}
632	}	712	}
633		713
634	void inline_speed	714	inline_speed void
		715	feed_reverse (EV_P_ W w)
		716	{
		717	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		718	rfeeds [rfeedcnt++] = w;
		719	}
		720
		721	inline_size void
		722	feed_reverse_done (EV_P_ int revents)
		723	{
		724	do
		725	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		726	while (rfeedcnt);
		727	}
		728
		729	inline_speed void
635	queue_events (EV_P_ W *events, int eventcnt, int type)	730	queue_events (EV_P_ W *events, int eventcnt, int type)
636	{	731	{
637	int i;	732	int i;
638		733
639	for (i = 0; i < eventcnt; ++i)	734	for (i = 0; i < eventcnt; ++i)
640	ev_feed_event (EV_A_ events [i], type);	735	ev_feed_event (EV_A_ events [i], type);
641	}	736	}
642		737
643	/*****************************************************************************/	738	/*****************************************************************************/
644		739
645	void inline_size	740	inline_speed void
646	anfds_init (ANFD *base, int count)
647	{
648	while (count--)
649	{
650	base->head = 0;
651	base->events = EV_NONE;
652	base->reify = 0;
653
654	++base;
655	}
656	}
657
658	void inline_speed
659	fd_event (EV_P_ int fd, int revents)	741	fd_event (EV_P_ int fd, int revents)
660	{	742	{
661	ANFD *anfd = anfds + fd;	743	ANFD *anfd = anfds + fd;
662	ev_io *w;	744	ev_io *w;
663		745
…		…
675	{	757	{
676	if (fd >= 0 && fd < anfdmax)	758	if (fd >= 0 && fd < anfdmax)
677	fd_event (EV_A_ fd, revents);	759	fd_event (EV_A_ fd, revents);
678	}	760	}
679		761
680	void inline_size	762	/* make sure the external fd watch events are in-sync */
		763	/* with the kernel/libev internal state */
		764	inline_size void
681	fd_reify (EV_P)	765	fd_reify (EV_P)
682	{	766	{
683	int i;	767	int i;
684		768
685	for (i = 0; i < fdchangecnt; ++i)	769	for (i = 0; i < fdchangecnt; ++i)
…		…
694	events |= (unsigned char)w->events;	778	events |= (unsigned char)w->events;
695		779
696	#if EV_SELECT_IS_WINSOCKET	780	#if EV_SELECT_IS_WINSOCKET
697	if (events)	781	if (events)
698	{	782	{
699	unsigned long argp;	783	unsigned long arg;
700	#ifdef EV_FD_TO_WIN32_HANDLE	784	#ifdef EV_FD_TO_WIN32_HANDLE
701	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	785	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
702	#else	786	#else
703	anfd->handle = _get_osfhandle (fd);	787	anfd->handle = _get_osfhandle (fd);
704	#endif	788	#endif
705	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	789	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
706	}	790	}
707	#endif	791	#endif
708		792
709	{	793	{
710	unsigned char o_events = anfd->events;	794	unsigned char o_events = anfd->events;
711	unsigned char o_reify = anfd->reify;	795	unsigned char o_reify = anfd->reify;
712		796
713	anfd->reify = 0;	797	anfd->reify = 0;
714	anfd->events = events;	798	anfd->events = events;
715		799
716	if (o_events != events || o_reify & EV_IOFDSET)	800	if (o_events != events || o_reify & EV__IOFDSET)
717	backend_modify (EV_A_ fd, o_events, events);	801	backend_modify (EV_A_ fd, o_events, events);
718	}	802	}
719	}	803	}
720		804
721	fdchangecnt = 0;	805	fdchangecnt = 0;
722	}	806	}
723		807
724	void inline_size	808	/* something about the given fd changed */
		809	inline_size void
725	fd_change (EV_P_ int fd, int flags)	810	fd_change (EV_P_ int fd, int flags)
726	{	811	{
727	unsigned char reify = anfds [fd].reify;	812	unsigned char reify = anfds [fd].reify;
728	anfds [fd].reify |= flags;	813	anfds [fd].reify |= flags;
729		814
…		…
733	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	818	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
734	fdchanges [fdchangecnt - 1] = fd;	819	fdchanges [fdchangecnt - 1] = fd;
735	}	820	}
736	}	821	}
737		822
738	void inline_speed	823	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		824	inline_speed void
739	fd_kill (EV_P_ int fd)	825	fd_kill (EV_P_ int fd)
740	{	826	{
741	ev_io *w;	827	ev_io *w;
742		828
743	while ((w = (ev_io *)anfds [fd].head))	829	while ((w = (ev_io *)anfds [fd].head))
…		…
745	ev_io_stop (EV_A_ w);	831	ev_io_stop (EV_A_ w);
746	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	832	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
747	}	833	}
748	}	834	}
749		835
750	int inline_size	836	/* check whether the given fd is atcually valid, for error recovery */
		837	inline_size int
751	fd_valid (int fd)	838	fd_valid (int fd)
752	{	839	{
753	#ifdef _WIN32	840	#ifdef _WIN32
754	return _get_osfhandle (fd) != -1;	841	return _get_osfhandle (fd) != -1;
755	#else	842	#else
…		…
763	{	850	{
764	int fd;	851	int fd;
765		852
766	for (fd = 0; fd < anfdmax; ++fd)	853	for (fd = 0; fd < anfdmax; ++fd)
767	if (anfds [fd].events)	854	if (anfds [fd].events)
768	if (!fd_valid (fd) == -1 && errno == EBADF)	855	if (!fd_valid (fd) && errno == EBADF)
769	fd_kill (EV_A_ fd);	856	fd_kill (EV_A_ fd);
770	}	857	}
771		858
772	/* called on ENOMEM in select/poll to kill some fds and retry */	859	/* called on ENOMEM in select/poll to kill some fds and retry */
773	static void noinline	860	static void noinline
…		…
791		878
792	for (fd = 0; fd < anfdmax; ++fd)	879	for (fd = 0; fd < anfdmax; ++fd)
793	if (anfds [fd].events)	880	if (anfds [fd].events)
794	{	881	{
795	anfds [fd].events = 0;	882	anfds [fd].events = 0;
		883	anfds [fd].emask = 0;
796	fd_change (EV_A_ fd, EV_IOFDSET | 1);	884	fd_change (EV_A_ fd, EV__IOFDSET | 1);
797	}	885	}
798	}	886	}
799		887
800	/*****************************************************************************/	888	/*****************************************************************************/
801		889
…		…
817	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	905	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
818	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)	906	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
819	#define UPHEAP_DONE(p,k) ((p) == (k))	907	#define UPHEAP_DONE(p,k) ((p) == (k))
820		908
821	/* away from the root */	909	/* away from the root */
822	void inline_speed	910	inline_speed void
823	downheap (ANHE *heap, int N, int k)	911	downheap (ANHE *heap, int N, int k)
824	{	912	{
825	ANHE he = heap [k];	913	ANHE he = heap [k];
826	ANHE *E = heap + N + HEAP0;	914	ANHE *E = heap + N + HEAP0;
827		915
…		…
867	#define HEAP0 1	955	#define HEAP0 1
868	#define HPARENT(k) ((k) >> 1)	956	#define HPARENT(k) ((k) >> 1)
869	#define UPHEAP_DONE(p,k) (!(p))	957	#define UPHEAP_DONE(p,k) (!(p))
870		958
871	/* away from the root */	959	/* away from the root */
872	void inline_speed	960	inline_speed void
873	downheap (ANHE *heap, int N, int k)	961	downheap (ANHE *heap, int N, int k)
874	{	962	{
875	ANHE he = heap [k];	963	ANHE he = heap [k];
876		964
877	for (;;)	965	for (;;)
…		…
897	ev_active (ANHE_w (he)) = k;	985	ev_active (ANHE_w (he)) = k;
898	}	986	}
899	#endif	987	#endif
900		988
901	/* towards the root */	989	/* towards the root */
902	void inline_speed	990	inline_speed void
903	upheap (ANHE *heap, int k)	991	upheap (ANHE *heap, int k)
904	{	992	{
905	ANHE he = heap [k];	993	ANHE he = heap [k];
906		994
907	for (;;)	995	for (;;)
…		…
918		1006
919	heap [k] = he;	1007	heap [k] = he;
920	ev_active (ANHE_w (he)) = k;	1008	ev_active (ANHE_w (he)) = k;
921	}	1009	}
922		1010
923	void inline_size	1011	/* move an element suitably so it is in a correct place */
		1012	inline_size void
924	adjustheap (ANHE *heap, int N, int k)	1013	adjustheap (ANHE *heap, int N, int k)
925	{	1014	{
926	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1015	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
927	upheap (heap, k);	1016	upheap (heap, k);
928	else	1017	else
929	downheap (heap, N, k);	1018	downheap (heap, N, k);
930	}	1019	}
931		1020
932	/* rebuild the heap: this function is used only once and executed rarely */	1021	/* rebuild the heap: this function is used only once and executed rarely */
933	void inline_size	1022	inline_size void
934	reheap (ANHE *heap, int N)	1023	reheap (ANHE *heap, int N)
935	{	1024	{
936	int i;	1025	int i;
		1026
937	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */	1027	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
938	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */	1028	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
939	for (i = 0; i < N; ++i)	1029	for (i = 0; i < N; ++i)
940	upheap (heap, i + HEAP0);	1030	upheap (heap, i + HEAP0);
941	}	1031	}
942		1032
943	#if EV_VERIFY
944	static void
945	checkheap (ANHE *heap, int N)
946	{
947	int i;
948
949	for (i = HEAP0; i < N + HEAP0; ++i)
950	{
951	assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
952	assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
953	assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
954	}
955	}
956	#endif
957
958	/*****************************************************************************/	1033	/*****************************************************************************/
959		1034
		1035	/* associate signal watchers to a signal signal */
960	typedef struct	1036	typedef struct
961	{	1037	{
962	WL head;	1038	WL head;
963	EV_ATOMIC_T gotsig;	1039	EV_ATOMIC_T gotsig;
964	} ANSIG;	1040	} ANSIG;
…		…
966	static ANSIG *signals;	1042	static ANSIG *signals;
967	static int signalmax;	1043	static int signalmax;
968		1044
969	static EV_ATOMIC_T gotsig;	1045	static EV_ATOMIC_T gotsig;
970		1046
971	void inline_size
972	signals_init (ANSIG *base, int count)
973	{
974	while (count--)
975	{
976	base->head = 0;
977	base->gotsig = 0;
978
979	++base;
980	}
981	}
982
983	/*****************************************************************************/	1047	/*****************************************************************************/
984		1048
985	void inline_speed	1049	/* used to prepare libev internal fd's */
		1050	/* this is not fork-safe */
		1051	inline_speed void
986	fd_intern (int fd)	1052	fd_intern (int fd)
987	{	1053	{
988	#ifdef _WIN32	1054	#ifdef _WIN32
989	int arg = 1;	1055	unsigned long arg = 1;
990	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1056	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
991	#else	1057	#else
992	fcntl (fd, F_SETFD, FD_CLOEXEC);	1058	fcntl (fd, F_SETFD, FD_CLOEXEC);
993	fcntl (fd, F_SETFL, O_NONBLOCK);	1059	fcntl (fd, F_SETFL, O_NONBLOCK);
994	#endif	1060	#endif
995	}	1061	}
996		1062
997	static void noinline	1063	static void noinline
998	evpipe_init (EV_P)	1064	evpipe_init (EV_P)
999	{	1065	{
1000	if (!ev_is_active (&pipeev))	1066	if (!ev_is_active (&pipe_w))
1001	{	1067	{
1002	#if EV_USE_EVENTFD	1068	#if EV_USE_EVENTFD
1003	if ((evfd = eventfd (0, 0)) >= 0)	1069	if ((evfd = eventfd (0, 0)) >= 0)
1004	{	1070	{
1005	evpipe [0] = -1;	1071	evpipe [0] = -1;
1006	fd_intern (evfd);	1072	fd_intern (evfd);
1007	ev_io_set (&pipeev, evfd, EV_READ);	1073	ev_io_set (&pipe_w, evfd, EV_READ);
1008	}	1074	}
1009	else	1075	else
1010	#endif	1076	#endif
1011	{	1077	{
1012	while (pipe (evpipe))	1078	while (pipe (evpipe))
1013	syserr ("(libev) error creating signal/async pipe");	1079	ev_syserr ("(libev) error creating signal/async pipe");
1014		1080
1015	fd_intern (evpipe [0]);	1081	fd_intern (evpipe [0]);
1016	fd_intern (evpipe [1]);	1082	fd_intern (evpipe [1]);
1017	ev_io_set (&pipeev, evpipe [0], EV_READ);	1083	ev_io_set (&pipe_w, evpipe [0], EV_READ);
1018	}	1084	}
1019		1085
1020	ev_io_start (EV_A_ &pipeev);	1086	ev_io_start (EV_A_ &pipe_w);
1021	ev_unref (EV_A); /* watcher should not keep loop alive */	1087	ev_unref (EV_A); /* watcher should not keep loop alive */
1022	}	1088	}
1023	}	1089	}
1024		1090
1025	void inline_size	1091	inline_size void
1026	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1092	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1027	{	1093	{
1028	if (!*flag)	1094	if (!*flag)
1029	{	1095	{
1030	int old_errno = errno; /* save errno because write might clobber it */	1096	int old_errno = errno; /* save errno because write might clobber it */
…		…
1043		1109
1044	errno = old_errno;	1110	errno = old_errno;
1045	}	1111	}
1046	}	1112	}
1047		1113
		1114	/* called whenever the libev signal pipe */
		1115	/* got some events (signal, async) */
1048	static void	1116	static void
1049	pipecb (EV_P_ ev_io *iow, int revents)	1117	pipecb (EV_P_ ev_io *iow, int revents)
1050	{	1118	{
1051	#if EV_USE_EVENTFD	1119	#if EV_USE_EVENTFD
1052	if (evfd >= 0)	1120	if (evfd >= 0)
…		…
1108	ev_feed_signal_event (EV_P_ int signum)	1176	ev_feed_signal_event (EV_P_ int signum)
1109	{	1177	{
1110	WL w;	1178	WL w;
1111		1179
1112	#if EV_MULTIPLICITY	1180	#if EV_MULTIPLICITY
1113	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1181	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1114	#endif	1182	#endif
1115		1183
1116	--signum;	1184	--signum;
1117		1185
1118	if (signum < 0 || signum >= signalmax)	1186	if (signum < 0 || signum >= signalmax)
…		…
1134		1202
1135	#ifndef WIFCONTINUED	1203	#ifndef WIFCONTINUED
1136	# define WIFCONTINUED(status) 0	1204	# define WIFCONTINUED(status) 0
1137	#endif	1205	#endif
1138		1206
1139	void inline_speed	1207	/* handle a single child status event */
		1208	inline_speed void
1140	child_reap (EV_P_ int chain, int pid, int status)	1209	child_reap (EV_P_ int chain, int pid, int status)
1141	{	1210	{
1142	ev_child *w;	1211	ev_child *w;
1143	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1212	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1144		1213
…		…
1157		1226
1158	#ifndef WCONTINUED	1227	#ifndef WCONTINUED
1159	# define WCONTINUED 0	1228	# define WCONTINUED 0
1160	#endif	1229	#endif
1161		1230
		1231	/* called on sigchld etc., calls waitpid */
1162	static void	1232	static void
1163	childcb (EV_P_ ev_signal *sw, int revents)	1233	childcb (EV_P_ ev_signal *sw, int revents)
1164	{	1234	{
1165	int pid, status;	1235	int pid, status;
1166		1236
…		…
1247	/* kqueue is borked on everything but netbsd apparently */	1317	/* kqueue is borked on everything but netbsd apparently */
1248	/* it usually doesn't work correctly on anything but sockets and pipes */	1318	/* it usually doesn't work correctly on anything but sockets and pipes */
1249	flags &= ~EVBACKEND_KQUEUE;	1319	flags &= ~EVBACKEND_KQUEUE;
1250	#endif	1320	#endif
1251	#ifdef __APPLE__	1321	#ifdef __APPLE__
1252	// flags &= ~EVBACKEND_KQUEUE; for documentation	1322	/* only select works correctly on that "unix-certified" platform */
1253	flags &= ~EVBACKEND_POLL;	1323	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1324	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1254	#endif	1325	#endif
1255		1326
1256	return flags;	1327	return flags;
1257	}	1328	}
1258		1329
…		…
1290	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1361	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1291	{	1362	{
1292	timeout_blocktime = interval;	1363	timeout_blocktime = interval;
1293	}	1364	}
1294		1365
		1366	/* initialise a loop structure, must be zero-initialised */
1295	static void noinline	1367	static void noinline
1296	loop_init (EV_P_ unsigned int flags)	1368	loop_init (EV_P_ unsigned int flags)
1297	{	1369	{
1298	if (!backend)	1370	if (!backend)
1299	{	1371	{
		1372	#if EV_USE_REALTIME
		1373	if (!have_realtime)
		1374	{
		1375	struct timespec ts;
		1376
		1377	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1378	have_realtime = 1;
		1379	}
		1380	#endif
		1381
1300	#if EV_USE_MONOTONIC	1382	#if EV_USE_MONOTONIC
		1383	if (!have_monotonic)
1301	{	1384	{
1302	struct timespec ts;	1385	struct timespec ts;
		1386
1303	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1387	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1304	have_monotonic = 1;	1388	have_monotonic = 1;
1305	}	1389	}
1306	#endif	1390	#endif
1307		1391
1308	ev_rt_now = ev_time ();	1392	ev_rt_now = ev_time ();
1309	mn_now = get_clock ();	1393	mn_now = get_clock ();
1310	now_floor = mn_now;	1394	now_floor = mn_now;
…		…
1347	#endif	1431	#endif
1348	#if EV_USE_SELECT	1432	#if EV_USE_SELECT
1349	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1433	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1350	#endif	1434	#endif
1351		1435
		1436	ev_prepare_init (&pending_w, pendingcb);
		1437
1352	ev_init (&pipeev, pipecb);	1438	ev_init (&pipe_w, pipecb);
1353	ev_set_priority (&pipeev, EV_MAXPRI);	1439	ev_set_priority (&pipe_w, EV_MAXPRI);
1354	}	1440	}
1355	}	1441	}
1356		1442
		1443	/* free up a loop structure */
1357	static void noinline	1444	static void noinline
1358	loop_destroy (EV_P)	1445	loop_destroy (EV_P)
1359	{	1446	{
1360	int i;	1447	int i;
1361		1448
1362	if (ev_is_active (&pipeev))	1449	if (ev_is_active (&pipe_w))
1363	{	1450	{
1364	ev_ref (EV_A); /* signal watcher */	1451	ev_ref (EV_A); /* signal watcher */
1365	ev_io_stop (EV_A_ &pipeev);	1452	ev_io_stop (EV_A_ &pipe_w);
1366		1453
1367	#if EV_USE_EVENTFD	1454	#if EV_USE_EVENTFD
1368	if (evfd >= 0)	1455	if (evfd >= 0)
1369	close (evfd);	1456	close (evfd);
1370	#endif	1457	#endif
…		…
1409	}	1496	}
1410		1497
1411	ev_free (anfds); anfdmax = 0;	1498	ev_free (anfds); anfdmax = 0;
1412		1499
1413	/* have to use the microsoft-never-gets-it-right macro */	1500	/* have to use the microsoft-never-gets-it-right macro */
		1501	array_free (rfeed, EMPTY);
1414	array_free (fdchange, EMPTY);	1502	array_free (fdchange, EMPTY);
1415	array_free (timer, EMPTY);	1503	array_free (timer, EMPTY);
1416	#if EV_PERIODIC_ENABLE	1504	#if EV_PERIODIC_ENABLE
1417	array_free (periodic, EMPTY);	1505	array_free (periodic, EMPTY);
1418	#endif	1506	#endif
…		…
1427		1515
1428	backend = 0;	1516	backend = 0;
1429	}	1517	}
1430		1518
1431	#if EV_USE_INOTIFY	1519	#if EV_USE_INOTIFY
1432	void inline_size infy_fork (EV_P);	1520	inline_size void infy_fork (EV_P);
1433	#endif	1521	#endif
1434		1522
1435	void inline_size	1523	inline_size void
1436	loop_fork (EV_P)	1524	loop_fork (EV_P)
1437	{	1525	{
1438	#if EV_USE_PORT	1526	#if EV_USE_PORT
1439	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1527	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1440	#endif	1528	#endif
…		…
1446	#endif	1534	#endif
1447	#if EV_USE_INOTIFY	1535	#if EV_USE_INOTIFY
1448	infy_fork (EV_A);	1536	infy_fork (EV_A);
1449	#endif	1537	#endif
1450		1538
1451	if (ev_is_active (&pipeev))	1539	if (ev_is_active (&pipe_w))
1452	{	1540	{
1453	/* this "locks" the handlers against writing to the pipe */	1541	/* this "locks" the handlers against writing to the pipe */
1454	/* while we modify the fd vars */	1542	/* while we modify the fd vars */
1455	gotsig = 1;	1543	gotsig = 1;
1456	#if EV_ASYNC_ENABLE	1544	#if EV_ASYNC_ENABLE
1457	gotasync = 1;	1545	gotasync = 1;
1458	#endif	1546	#endif
1459		1547
1460	ev_ref (EV_A);	1548	ev_ref (EV_A);
1461	ev_io_stop (EV_A_ &pipeev);	1549	ev_io_stop (EV_A_ &pipe_w);
1462		1550
1463	#if EV_USE_EVENTFD	1551	#if EV_USE_EVENTFD
1464	if (evfd >= 0)	1552	if (evfd >= 0)
1465	close (evfd);	1553	close (evfd);
1466	#endif	1554	#endif
…		…
1471	close (evpipe [1]);	1559	close (evpipe [1]);
1472	}	1560	}
1473		1561
1474	evpipe_init (EV_A);	1562	evpipe_init (EV_A);
1475	/* now iterate over everything, in case we missed something */	1563	/* now iterate over everything, in case we missed something */
1476	pipecb (EV_A_ &pipeev, EV_READ);	1564	pipecb (EV_A_ &pipe_w, EV_READ);
1477	}	1565	}
1478		1566
1479	postfork = 0;	1567	postfork = 0;
1480	}	1568	}
1481		1569
1482	#if EV_MULTIPLICITY	1570	#if EV_MULTIPLICITY
		1571
1483	struct ev_loop *	1572	struct ev_loop *
1484	ev_loop_new (unsigned int flags)	1573	ev_loop_new (unsigned int flags)
1485	{	1574	{
1486	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1575	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1487		1576
…		…
1507	{	1596	{
1508	postfork = 1; /* must be in line with ev_default_fork */	1597	postfork = 1; /* must be in line with ev_default_fork */
1509	}	1598	}
1510		1599
1511	#if EV_VERIFY	1600	#if EV_VERIFY
1512	static void	1601	static void noinline
		1602	verify_watcher (EV_P_ W w)
		1603	{
		1604	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1605
		1606	if (w->pending)
		1607	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1608	}
		1609
		1610	static void noinline
		1611	verify_heap (EV_P_ ANHE *heap, int N)
		1612	{
		1613	int i;
		1614
		1615	for (i = HEAP0; i < N + HEAP0; ++i)
		1616	{
		1617	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1618	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1619	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1620
		1621	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1622	}
		1623	}
		1624
		1625	static void noinline
1513	array_check (W **ws, int cnt)	1626	array_verify (EV_P_ W *ws, int cnt)
1514	{	1627	{
1515	while (cnt--)	1628	while (cnt--)
		1629	{
1516	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));	1630	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1631	verify_watcher (EV_A_ ws [cnt]);
		1632	}
1517	}	1633	}
		1634	#endif
1518		1635
1519	static void	1636	void
1520	ev_loop_verify (EV_P)	1637	ev_loop_verify (EV_P)
1521	{	1638	{
		1639	#if EV_VERIFY
1522	int i;	1640	int i;
		1641	WL w;
1523		1642
		1643	assert (activecnt >= -1);
		1644
		1645	assert (fdchangemax >= fdchangecnt);
		1646	for (i = 0; i < fdchangecnt; ++i)
		1647	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1648
		1649	assert (anfdmax >= 0);
		1650	for (i = 0; i < anfdmax; ++i)
		1651	for (w = anfds [i].head; w; w = w->next)
		1652	{
		1653	verify_watcher (EV_A_ (W)w);
		1654	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1655	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1656	}
		1657
		1658	assert (timermax >= timercnt);
1524	checkheap (timers, timercnt);	1659	verify_heap (EV_A_ timers, timercnt);
		1660
1525	#if EV_PERIODIC_ENABLE	1661	#if EV_PERIODIC_ENABLE
		1662	assert (periodicmax >= periodiccnt);
1526	checkheap (periodics, periodiccnt);	1663	verify_heap (EV_A_ periodics, periodiccnt);
1527	#endif	1664	#endif
1528		1665
		1666	for (i = NUMPRI; i--; )
		1667	{
		1668	assert (pendingmax [i] >= pendingcnt [i]);
1529	#if EV_IDLE_ENABLE	1669	#if EV_IDLE_ENABLE
1530	for (i = NUMPRI; i--; )	1670	assert (idleall >= 0);
		1671	assert (idlemax [i] >= idlecnt [i]);
1531	array_check ((W **)idles [i], idlecnt [i]);	1672	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1532	#endif	1673	#endif
		1674	}
		1675
1533	#if EV_FORK_ENABLE	1676	#if EV_FORK_ENABLE
		1677	assert (forkmax >= forkcnt);
1534	array_check ((W **)forks, forkcnt);	1678	array_verify (EV_A_ (W *)forks, forkcnt);
1535	#endif	1679	#endif
1536	array_check ((W **)prepares, preparecnt);	1680
1537	array_check ((W **)checks, checkcnt);
1538	#if EV_ASYNC_ENABLE	1681	#if EV_ASYNC_ENABLE
		1682	assert (asyncmax >= asynccnt);
1539	array_check ((W **)asyncs, asynccnt);	1683	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1684	#endif
		1685
		1686	assert (preparemax >= preparecnt);
		1687	array_verify (EV_A_ (W *)prepares, preparecnt);
		1688
		1689	assert (checkmax >= checkcnt);
		1690	array_verify (EV_A_ (W *)checks, checkcnt);
		1691
		1692	# if 0
		1693	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1694	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1540	#endif	1695	# endif
1541	}
1542	#endif	1696	#endif
		1697	}
1543		1698
1544	#endif	1699	#endif /* multiplicity */
1545		1700
1546	#if EV_MULTIPLICITY	1701	#if EV_MULTIPLICITY
1547	struct ev_loop *	1702	struct ev_loop *
1548	ev_default_loop_init (unsigned int flags)	1703	ev_default_loop_init (unsigned int flags)
1549	#else	1704	#else
…		…
1582	{	1737	{
1583	#if EV_MULTIPLICITY	1738	#if EV_MULTIPLICITY
1584	struct ev_loop *loop = ev_default_loop_ptr;	1739	struct ev_loop *loop = ev_default_loop_ptr;
1585	#endif	1740	#endif
1586		1741
		1742	ev_default_loop_ptr = 0;
		1743
1587	#ifndef _WIN32	1744	#ifndef _WIN32
1588	ev_ref (EV_A); /* child watcher */	1745	ev_ref (EV_A); /* child watcher */
1589	ev_signal_stop (EV_A_ &childev);	1746	ev_signal_stop (EV_A_ &childev);
1590	#endif	1747	#endif
1591		1748
…		…
1597	{	1754	{
1598	#if EV_MULTIPLICITY	1755	#if EV_MULTIPLICITY
1599	struct ev_loop *loop = ev_default_loop_ptr;	1756	struct ev_loop *loop = ev_default_loop_ptr;
1600	#endif	1757	#endif
1601		1758
1602	if (backend)
1603	postfork = 1; /* must be in line with ev_loop_fork */	1759	postfork = 1; /* must be in line with ev_loop_fork */
1604	}	1760	}
1605		1761
1606	/*****************************************************************************/	1762	/*****************************************************************************/
1607		1763
1608	void	1764	void
1609	ev_invoke (EV_P_ void *w, int revents)	1765	ev_invoke (EV_P_ void *w, int revents)
1610	{	1766	{
1611	EV_CB_INVOKE ((W)w, revents);	1767	EV_CB_INVOKE ((W)w, revents);
1612	}	1768	}
1613		1769
1614	void inline_speed	1770	inline_speed void
1615	call_pending (EV_P)	1771	call_pending (EV_P)
1616	{	1772	{
1617	int pri;	1773	int pri;
1618
1619	EV_FREQUENT_CHECK;
1620		1774
1621	for (pri = NUMPRI; pri--; )	1775	for (pri = NUMPRI; pri--; )
1622	while (pendingcnt [pri])	1776	while (pendingcnt [pri])
1623	{	1777	{
1624	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1778	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1625		1779
1626	if (expect_true (p->w))
1627	{
1628	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1780	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1781	/* ^ this is no longer true, as pending_w could be here */
1629		1782
1630	p->w->pending = 0;	1783	p->w->pending = 0;
1631	EV_CB_INVOKE (p->w, p->events);	1784	EV_CB_INVOKE (p->w, p->events);
1632	}	1785	EV_FREQUENT_CHECK;
1633	}	1786	}
1634
1635	EV_FREQUENT_CHECK;
1636	}	1787	}
1637		1788
1638	#if EV_IDLE_ENABLE	1789	#if EV_IDLE_ENABLE
1639	void inline_size	1790	/* make idle watchers pending. this handles the "call-idle */
		1791	/* only when higher priorities are idle" logic */
		1792	inline_size void
1640	idle_reify (EV_P)	1793	idle_reify (EV_P)
1641	{	1794	{
1642	if (expect_false (idleall))	1795	if (expect_false (idleall))
1643	{	1796	{
1644	int pri;	1797	int pri;
…		…
1656	}	1809	}
1657	}	1810	}
1658	}	1811	}
1659	#endif	1812	#endif
1660		1813
1661	void inline_size	1814	/* make timers pending */
		1815	inline_size void
1662	timers_reify (EV_P)	1816	timers_reify (EV_P)
1663	{	1817	{
1664	EV_FREQUENT_CHECK;	1818	EV_FREQUENT_CHECK;
1665		1819
1666	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	1820	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1667	{	1821	{
1668	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	1822	do
1669
1670	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1671
1672	/* first reschedule or stop timer */
1673	if (w->repeat)
1674	{	1823	{
		1824	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1825
		1826	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		1827
		1828	/* first reschedule or stop timer */
		1829	if (w->repeat)
		1830	{
1675	ev_at (w) += w->repeat;	1831	ev_at (w) += w->repeat;
1676	if (ev_at (w) < mn_now)	1832	if (ev_at (w) < mn_now)
1677	ev_at (w) = mn_now;	1833	ev_at (w) = mn_now;
1678		1834
1679	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1835	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1680		1836
1681	ANHE_at_cache (timers [HEAP0]);	1837	ANHE_at_cache (timers [HEAP0]);
1682	downheap (timers, timercnt, HEAP0);	1838	downheap (timers, timercnt, HEAP0);
		1839	}
		1840	else
		1841	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1842
		1843	EV_FREQUENT_CHECK;
		1844	feed_reverse (EV_A_ (W)w);
1683	}	1845	}
1684	else	1846	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1685	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1686		1847
1687	EV_FREQUENT_CHECK;
1688	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1848	feed_reverse_done (EV_A_ EV_TIMEOUT);
1689	}	1849	}
1690	}	1850	}
1691		1851
1692	#if EV_PERIODIC_ENABLE	1852	#if EV_PERIODIC_ENABLE
1693	void inline_size	1853	/* make periodics pending */
		1854	inline_size void
1694	periodics_reify (EV_P)	1855	periodics_reify (EV_P)
1695	{	1856	{
1696	EV_FREQUENT_CHECK;	1857	EV_FREQUENT_CHECK;
		1858
1697	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	1859	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1698	{	1860	{
1699	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	1861	int feed_count = 0;
1700		1862
1701	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	1863	do
1702
1703	/* first reschedule or stop timer */
1704	if (w->reschedule_cb)
1705	{	1864	{
		1865	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1866
		1867	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		1868
		1869	/* first reschedule or stop timer */
		1870	if (w->reschedule_cb)
		1871	{
1706	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1872	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1707		1873
1708	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));	1874	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1709		1875
1710	ANHE_at_cache (periodics [HEAP0]);	1876	ANHE_at_cache (periodics [HEAP0]);
1711	downheap (periodics, periodiccnt, HEAP0);	1877	downheap (periodics, periodiccnt, HEAP0);
		1878	}
		1879	else if (w->interval)
		1880	{
		1881	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1882	/* if next trigger time is not sufficiently in the future, put it there */
		1883	/* this might happen because of floating point inexactness */
		1884	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1885	{
		1886	ev_at (w) += w->interval;
		1887
		1888	/* if interval is unreasonably low we might still have a time in the past */
		1889	/* so correct this. this will make the periodic very inexact, but the user */
		1890	/* has effectively asked to get triggered more often than possible */
		1891	if (ev_at (w) < ev_rt_now)
		1892	ev_at (w) = ev_rt_now;
		1893	}
		1894
		1895	ANHE_at_cache (periodics [HEAP0]);
		1896	downheap (periodics, periodiccnt, HEAP0);
		1897	}
		1898	else
		1899	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1900
1712	EV_FREQUENT_CHECK;	1901	EV_FREQUENT_CHECK;
		1902	feed_reverse (EV_A_ (W)w);
1713	}	1903	}
1714	else if (w->interval)	1904	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1715	{
1716	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1717	/* if next trigger time is not sufficiently in the future, put it there */
1718	/* this might happen because of floating point inexactness */
1719	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1720	{
1721	ev_at (w) += w->interval;
1722		1905
1723	/* if interval is unreasonably low we might still have a time in the past */
1724	/* so correct this. this will make the periodic very inexact, but the user */
1725	/* has effectively asked to get triggered more often than possible */
1726	if (ev_at (w) < ev_rt_now)
1727	ev_at (w) = ev_rt_now;
1728	}
1729
1730	ANHE_at_cache (periodics [HEAP0]);
1731	downheap (periodics, periodiccnt, HEAP0);
1732	}
1733	else
1734	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1735
1736	EV_FREQUENT_CHECK;
1737	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1906	feed_reverse_done (EV_A_ EV_PERIODIC);
1738	}	1907	}
1739	}	1908	}
1740		1909
		1910	/* simply recalculate all periodics */
		1911	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1741	static void noinline	1912	static void noinline
1742	periodics_reschedule (EV_P)	1913	periodics_reschedule (EV_P)
1743	{	1914	{
1744	int i;	1915	int i;
1745		1916
…		…
1758		1929
1759	reheap (periodics, periodiccnt);	1930	reheap (periodics, periodiccnt);
1760	}	1931	}
1761	#endif	1932	#endif
1762		1933
1763	void inline_speed	1934	/* adjust all timers by a given offset */
		1935	static void noinline
		1936	timers_reschedule (EV_P_ ev_tstamp adjust)
		1937	{
		1938	int i;
		1939
		1940	for (i = 0; i < timercnt; ++i)
		1941	{
		1942	ANHE *he = timers + i + HEAP0;
		1943	ANHE_w (*he)->at += adjust;
		1944	ANHE_at_cache (*he);
		1945	}
		1946	}
		1947
		1948	/* fetch new monotonic and realtime times from the kernel */
		1949	/* also detetc if there was a timejump, and act accordingly */
		1950	inline_speed void
1764	time_update (EV_P_ ev_tstamp max_block)	1951	time_update (EV_P_ ev_tstamp max_block)
1765	{	1952	{
1766	int i;	1953	int i;
1767		1954
1768	#if EV_USE_MONOTONIC	1955	#if EV_USE_MONOTONIC
…		…
1801	ev_rt_now = ev_time ();	1988	ev_rt_now = ev_time ();
1802	mn_now = get_clock ();	1989	mn_now = get_clock ();
1803	now_floor = mn_now;	1990	now_floor = mn_now;
1804	}	1991	}
1805		1992
		1993	/* no timer adjustment, as the monotonic clock doesn't jump */
		1994	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1806	# if EV_PERIODIC_ENABLE	1995	# if EV_PERIODIC_ENABLE
1807	periodics_reschedule (EV_A);	1996	periodics_reschedule (EV_A);
1808	# endif	1997	# endif
1809	/* no timer adjustment, as the monotonic clock doesn't jump */
1810	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1811	}	1998	}
1812	else	1999	else
1813	#endif	2000	#endif
1814	{	2001	{
1815	ev_rt_now = ev_time ();	2002	ev_rt_now = ev_time ();
1816		2003
1817	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2004	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1818	{	2005	{
		2006	/* adjust timers. this is easy, as the offset is the same for all of them */
		2007	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1819	#if EV_PERIODIC_ENABLE	2008	#if EV_PERIODIC_ENABLE
1820	periodics_reschedule (EV_A);	2009	periodics_reschedule (EV_A);
1821	#endif	2010	#endif
1822	/* adjust timers. this is easy, as the offset is the same for all of them */
1823	for (i = 0; i < timercnt; ++i)
1824	{
1825	ANHE *he = timers + i + HEAP0;
1826	ANHE_w (*he)->at += ev_rt_now - mn_now;
1827	ANHE_at_cache (*he);
1828	}
1829	}	2011	}
1830		2012
1831	mn_now = ev_rt_now;	2013	mn_now = ev_rt_now;
1832	}	2014	}
1833	}	2015	}
1834		2016
1835	void
1836	ev_ref (EV_P)
1837	{
1838	++activecnt;
1839	}
1840
1841	void
1842	ev_unref (EV_P)
1843	{
1844	--activecnt;
1845	}
1846
1847	static int loop_done;	2017	static int loop_done;
1848		2018
1849	void	2019	void
1850	ev_loop (EV_P_ int flags)	2020	ev_loop (EV_P_ int flags)
1851	{	2021	{
…		…
1853		2023
1854	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2024	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1855		2025
1856	do	2026	do
1857	{	2027	{
		2028	#if EV_VERIFY >= 2
		2029	ev_loop_verify (EV_A);
		2030	#endif
		2031
1858	#ifndef _WIN32	2032	#ifndef _WIN32
1859	if (expect_false (curpid)) /* penalise the forking check even more */	2033	if (expect_false (curpid)) /* penalise the forking check even more */
1860	if (expect_false (getpid () != curpid))	2034	if (expect_false (getpid () != curpid))
1861	{	2035	{
1862	curpid = getpid ();	2036	curpid = getpid ();
…		…
1879	{	2053	{
1880	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2054	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1881	call_pending (EV_A);	2055	call_pending (EV_A);
1882	}	2056	}
1883		2057
1884	if (expect_false (!activecnt))
1885	break;
1886
1887	/* we might have forked, so reify kernel state if necessary */	2058	/* we might have forked, so reify kernel state if necessary */
1888	if (expect_false (postfork))	2059	if (expect_false (postfork))
1889	loop_fork (EV_A);	2060	loop_fork (EV_A);
1890		2061
1891	/* update fd-related kernel structures */	2062	/* update fd-related kernel structures */
…		…
1970	ev_unloop (EV_P_ int how)	2141	ev_unloop (EV_P_ int how)
1971	{	2142	{
1972	loop_done = how;	2143	loop_done = how;
1973	}	2144	}
1974		2145
		2146	void
		2147	ev_ref (EV_P)
		2148	{
		2149	++activecnt;
		2150	}
		2151
		2152	void
		2153	ev_unref (EV_P)
		2154	{
		2155	--activecnt;
		2156	}
		2157
		2158	void
		2159	ev_now_update (EV_P)
		2160	{
		2161	time_update (EV_A_ 1e100);
		2162	}
		2163
		2164	void
		2165	ev_suspend (EV_P)
		2166	{
		2167	ev_now_update (EV_A);
		2168	}
		2169
		2170	void
		2171	ev_resume (EV_P)
		2172	{
		2173	ev_tstamp mn_prev = mn_now;
		2174
		2175	ev_now_update (EV_A);
		2176	timers_reschedule (EV_A_ mn_now - mn_prev);
		2177	#if EV_PERIODIC_ENABLE
		2178	/* TODO: really do this? */
		2179	periodics_reschedule (EV_A);
		2180	#endif
		2181	}
		2182
1975	/*****************************************************************************/	2183	/*****************************************************************************/
		2184	/* singly-linked list management, used when the expected list length is short */
1976		2185
1977	void inline_size	2186	inline_size void
1978	wlist_add (WL *head, WL elem)	2187	wlist_add (WL *head, WL elem)
1979	{	2188	{
1980	elem->next = *head;	2189	elem->next = *head;
1981	*head = elem;	2190	*head = elem;
1982	}	2191	}
1983		2192
1984	void inline_size	2193	inline_size void
1985	wlist_del (WL *head, WL elem)	2194	wlist_del (WL *head, WL elem)
1986	{	2195	{
1987	while (*head)	2196	while (*head)
1988	{	2197	{
1989	if (*head == elem)	2198	if (*head == elem)
…		…
1994		2203
1995	head = &(*head)->next;	2204	head = &(*head)->next;
1996	}	2205	}
1997	}	2206	}
1998		2207
1999	void inline_speed	2208	/* internal, faster, version of ev_clear_pending */
		2209	inline_speed void
2000	clear_pending (EV_P_ W w)	2210	clear_pending (EV_P_ W w)
2001	{	2211	{
2002	if (w->pending)	2212	if (w->pending)
2003	{	2213	{
2004	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2214	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2005	w->pending = 0;	2215	w->pending = 0;
2006	}	2216	}
2007	}	2217	}
2008		2218
2009	int	2219	int
…		…
2013	int pending = w_->pending;	2223	int pending = w_->pending;
2014		2224
2015	if (expect_true (pending))	2225	if (expect_true (pending))
2016	{	2226	{
2017	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2227	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2228	p->w = (W)&pending_w;
2018	w_->pending = 0;	2229	w_->pending = 0;
2019	p->w = 0;
2020	return p->events;	2230	return p->events;
2021	}	2231	}
2022	else	2232	else
2023	return 0;	2233	return 0;
2024	}	2234	}
2025		2235
2026	void inline_size	2236	inline_size void
2027	pri_adjust (EV_P_ W w)	2237	pri_adjust (EV_P_ W w)
2028	{	2238	{
2029	int pri = w->priority;	2239	int pri = w->priority;
2030	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2240	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2031	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2241	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2032	w->priority = pri;	2242	w->priority = pri;
2033	}	2243	}
2034		2244
2035	void inline_speed	2245	inline_speed void
2036	ev_start (EV_P_ W w, int active)	2246	ev_start (EV_P_ W w, int active)
2037	{	2247	{
2038	pri_adjust (EV_A_ w);	2248	pri_adjust (EV_A_ w);
2039	w->active = active;	2249	w->active = active;
2040	ev_ref (EV_A);	2250	ev_ref (EV_A);
2041	}	2251	}
2042		2252
2043	void inline_size	2253	inline_size void
2044	ev_stop (EV_P_ W w)	2254	ev_stop (EV_P_ W w)
2045	{	2255	{
2046	ev_unref (EV_A);	2256	ev_unref (EV_A);
2047	w->active = 0;	2257	w->active = 0;
2048	}	2258	}
…		…
2055	int fd = w->fd;	2265	int fd = w->fd;
2056		2266
2057	if (expect_false (ev_is_active (w)))	2267	if (expect_false (ev_is_active (w)))
2058	return;	2268	return;
2059		2269
2060	assert (("ev_io_start called with negative fd", fd >= 0));	2270	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2271	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2061		2272
2062	EV_FREQUENT_CHECK;	2273	EV_FREQUENT_CHECK;
2063		2274
2064	ev_start (EV_A_ (W)w, 1);	2275	ev_start (EV_A_ (W)w, 1);
2065	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2276	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2066	wlist_add (&anfds[fd].head, (WL)w);	2277	wlist_add (&anfds[fd].head, (WL)w);
2067		2278
2068	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2279	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
2069	w->events &= ~EV_IOFDSET;	2280	w->events &= ~EV__IOFDSET;
2070		2281
2071	EV_FREQUENT_CHECK;	2282	EV_FREQUENT_CHECK;
2072	}	2283	}
2073		2284
2074	void noinline	2285	void noinline
…		…
2076	{	2287	{
2077	clear_pending (EV_A_ (W)w);	2288	clear_pending (EV_A_ (W)w);
2078	if (expect_false (!ev_is_active (w)))	2289	if (expect_false (!ev_is_active (w)))
2079	return;	2290	return;
2080		2291
2081	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2292	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2082		2293
2083	EV_FREQUENT_CHECK;	2294	EV_FREQUENT_CHECK;
2084		2295
2085	wlist_del (&anfds[w->fd].head, (WL)w);	2296	wlist_del (&anfds[w->fd].head, (WL)w);
2086	ev_stop (EV_A_ (W)w);	2297	ev_stop (EV_A_ (W)w);
…		…
2096	if (expect_false (ev_is_active (w)))	2307	if (expect_false (ev_is_active (w)))
2097	return;	2308	return;
2098		2309
2099	ev_at (w) += mn_now;	2310	ev_at (w) += mn_now;
2100		2311
2101	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2312	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2102		2313
2103	EV_FREQUENT_CHECK;	2314	EV_FREQUENT_CHECK;
2104		2315
2105	++timercnt;	2316	++timercnt;
2106	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);	2317	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
…		…
2109	ANHE_at_cache (timers [ev_active (w)]);	2320	ANHE_at_cache (timers [ev_active (w)]);
2110	upheap (timers, ev_active (w));	2321	upheap (timers, ev_active (w));
2111		2322
2112	EV_FREQUENT_CHECK;	2323	EV_FREQUENT_CHECK;
2113		2324
2114	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2325	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2115	}	2326	}
2116		2327
2117	void noinline	2328	void noinline
2118	ev_timer_stop (EV_P_ ev_timer *w)	2329	ev_timer_stop (EV_P_ ev_timer *w)
2119	{	2330	{
…		…
2124	EV_FREQUENT_CHECK;	2335	EV_FREQUENT_CHECK;
2125		2336
2126	{	2337	{
2127	int active = ev_active (w);	2338	int active = ev_active (w);
2128		2339
2129	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2340	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2130		2341
2131	--timercnt;	2342	--timercnt;
2132		2343
2133	if (expect_true (active < timercnt + HEAP0))	2344	if (expect_true (active < timercnt + HEAP0))
2134	{	2345	{
…		…
2178		2389
2179	if (w->reschedule_cb)	2390	if (w->reschedule_cb)
2180	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2391	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2181	else if (w->interval)	2392	else if (w->interval)
2182	{	2393	{
2183	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2394	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2184	/* this formula differs from the one in periodic_reify because we do not always round up */	2395	/* this formula differs from the one in periodic_reify because we do not always round up */
2185	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2396	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2186	}	2397	}
2187	else	2398	else
2188	ev_at (w) = w->offset;	2399	ev_at (w) = w->offset;
…		…
2196	ANHE_at_cache (periodics [ev_active (w)]);	2407	ANHE_at_cache (periodics [ev_active (w)]);
2197	upheap (periodics, ev_active (w));	2408	upheap (periodics, ev_active (w));
2198		2409
2199	EV_FREQUENT_CHECK;	2410	EV_FREQUENT_CHECK;
2200		2411
2201	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2412	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2202	}	2413	}
2203		2414
2204	void noinline	2415	void noinline
2205	ev_periodic_stop (EV_P_ ev_periodic *w)	2416	ev_periodic_stop (EV_P_ ev_periodic *w)
2206	{	2417	{
…		…
2211	EV_FREQUENT_CHECK;	2422	EV_FREQUENT_CHECK;
2212		2423
2213	{	2424	{
2214	int active = ev_active (w);	2425	int active = ev_active (w);
2215		2426
2216	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2427	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2217		2428
2218	--periodiccnt;	2429	--periodiccnt;
2219		2430
2220	if (expect_true (active < periodiccnt + HEAP0))	2431	if (expect_true (active < periodiccnt + HEAP0))
2221	{	2432	{
…		…
2244		2455
2245	void noinline	2456	void noinline
2246	ev_signal_start (EV_P_ ev_signal *w)	2457	ev_signal_start (EV_P_ ev_signal *w)
2247	{	2458	{
2248	#if EV_MULTIPLICITY	2459	#if EV_MULTIPLICITY
2249	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2460	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2250	#endif	2461	#endif
2251	if (expect_false (ev_is_active (w)))	2462	if (expect_false (ev_is_active (w)))
2252	return;	2463	return;
2253		2464
2254	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2465	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2255		2466
2256	evpipe_init (EV_A);	2467	evpipe_init (EV_A);
2257		2468
2258	EV_FREQUENT_CHECK;	2469	EV_FREQUENT_CHECK;
2259		2470
…		…
2262	sigset_t full, prev;	2473	sigset_t full, prev;
2263	sigfillset (&full);	2474	sigfillset (&full);
2264	sigprocmask (SIG_SETMASK, &full, &prev);	2475	sigprocmask (SIG_SETMASK, &full, &prev);
2265	#endif	2476	#endif
2266		2477
2267	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2478	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2268		2479
2269	#ifndef _WIN32	2480	#ifndef _WIN32
2270	sigprocmask (SIG_SETMASK, &prev, 0);	2481	sigprocmask (SIG_SETMASK, &prev, 0);
2271	#endif	2482	#endif
2272	}	2483	}
…		…
2310		2521
2311	void	2522	void
2312	ev_child_start (EV_P_ ev_child *w)	2523	ev_child_start (EV_P_ ev_child *w)
2313	{	2524	{
2314	#if EV_MULTIPLICITY	2525	#if EV_MULTIPLICITY
2315	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2526	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2316	#endif	2527	#endif
2317	if (expect_false (ev_is_active (w)))	2528	if (expect_false (ev_is_active (w)))
2318	return;	2529	return;
2319		2530
2320	EV_FREQUENT_CHECK;	2531	EV_FREQUENT_CHECK;
…		…
2345	# ifdef _WIN32	2556	# ifdef _WIN32
2346	# undef lstat	2557	# undef lstat
2347	# define lstat(a,b) _stati64 (a,b)	2558	# define lstat(a,b) _stati64 (a,b)
2348	# endif	2559	# endif
2349		2560
2350	#define DEF_STAT_INTERVAL 5.0074891	2561	#define DEF_STAT_INTERVAL 5.0074891
		2562	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2351	#define MIN_STAT_INTERVAL 0.1074891	2563	#define MIN_STAT_INTERVAL 0.1074891
2352		2564
2353	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2565	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2354		2566
2355	#if EV_USE_INOTIFY	2567	#if EV_USE_INOTIFY
2356	# define EV_INOTIFY_BUFSIZE 8192	2568	# define EV_INOTIFY_BUFSIZE 8192
…		…
2360	{	2572	{
2361	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);	2573	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);
2362		2574
2363	if (w->wd < 0)	2575	if (w->wd < 0)
2364	{	2576	{
		2577	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2365	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2578	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2366		2579
2367	/* monitor some parent directory for speedup hints */	2580	/* monitor some parent directory for speedup hints */
2368	/* note that exceeding the hardcoded limit is not a correctness issue, */	2581	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2369	/* but an efficiency issue only */	2582	/* but an efficiency issue only */
2370	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2583	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2371	{	2584	{
2372	char path [4096];	2585	char path [4096];
2373	strcpy (path, w->path);	2586	strcpy (path, w->path);
…		…
2377	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2590	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2378	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2591	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2379		2592
2380	char *pend = strrchr (path, '/');	2593	char *pend = strrchr (path, '/');
2381		2594
2382	if (!pend)	2595	if (!pend || pend == path)
2383	break; /* whoops, no '/', complain to your admin */	2596	break;
2384		2597
2385	*pend = 0;	2598	*pend = 0;
2386	w->wd = inotify_add_watch (fs_fd, path, mask);	2599	w->wd = inotify_add_watch (fs_fd, path, mask);
2387	}	2600	}
2388	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2601	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2389	}	2602	}
2390	}	2603	}
2391	else
2392	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2393		2604
2394	if (w->wd >= 0)	2605	if (w->wd >= 0)
		2606	{
2395	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2607	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2608
		2609	/* now local changes will be tracked by inotify, but remote changes won't */
		2610	/* unless the filesystem it known to be local, we therefore still poll */
		2611	/* also do poll on <2.6.25, but with normal frequency */
		2612	struct statfs sfs;
		2613
		2614	if (fs_2625 && !statfs (w->path, &sfs))
		2615	if (sfs.f_type == 0x1373 /* devfs */
		2616	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2617	|| sfs.f_type == 0x3153464a /* jfs */
		2618	|| sfs.f_type == 0x52654973 /* reiser3 */
		2619	|| sfs.f_type == 0x01021994 /* tempfs */
		2620	|| sfs.f_type == 0x58465342 /* xfs */)
		2621	return;
		2622
		2623	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2624	ev_timer_again (EV_A_ &w->timer);
		2625	}
2396	}	2626	}
2397		2627
2398	static void noinline	2628	static void noinline
2399	infy_del (EV_P_ ev_stat *w)	2629	infy_del (EV_P_ ev_stat *w)
2400	{	2630	{
…		…
2414		2644
2415	static void noinline	2645	static void noinline
2416	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2646	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2417	{	2647	{
2418	if (slot < 0)	2648	if (slot < 0)
2419	/* overflow, need to check for all hahs slots */	2649	/* overflow, need to check for all hash slots */
2420	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2650	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2421	infy_wd (EV_A_ slot, wd, ev);	2651	infy_wd (EV_A_ slot, wd, ev);
2422	else	2652	else
2423	{	2653	{
2424	WL w_;	2654	WL w_;
…		…
2430		2660
2431	if (w->wd == wd || wd == -1)	2661	if (w->wd == wd || wd == -1)
2432	{	2662	{
2433	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2663	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2434	{	2664	{
		2665	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2435	w->wd = -1;	2666	w->wd = -1;
2436	infy_add (EV_A_ w); /* re-add, no matter what */	2667	infy_add (EV_A_ w); /* re-add, no matter what */
2437	}	2668	}
2438		2669
2439	stat_timer_cb (EV_A_ &w->timer, 0);	2670	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2452		2683
2453	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2684	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2454	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2685	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2455	}	2686	}
2456		2687
2457	void inline_size	2688	inline_size void
		2689	check_2625 (EV_P)
		2690	{
		2691	/* kernels < 2.6.25 are borked
		2692	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2693	*/
		2694	struct utsname buf;
		2695	int major, minor, micro;
		2696
		2697	if (uname (&buf))
		2698	return;
		2699
		2700	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2701	return;
		2702
		2703	if (major < 2
		2704	|| (major == 2 && minor < 6)
		2705	|| (major == 2 && minor == 6 && micro < 25))
		2706	return;
		2707
		2708	fs_2625 = 1;
		2709	}
		2710
		2711	inline_size void
2458	infy_init (EV_P)	2712	infy_init (EV_P)
2459	{	2713	{
2460	if (fs_fd != -2)	2714	if (fs_fd != -2)
2461	return;	2715	return;
		2716
		2717	fs_fd = -1;
		2718
		2719	check_2625 (EV_A);
2462		2720
2463	fs_fd = inotify_init ();	2721	fs_fd = inotify_init ();
2464		2722
2465	if (fs_fd >= 0)	2723	if (fs_fd >= 0)
2466	{	2724	{
…		…
2468	ev_set_priority (&fs_w, EV_MAXPRI);	2726	ev_set_priority (&fs_w, EV_MAXPRI);
2469	ev_io_start (EV_A_ &fs_w);	2727	ev_io_start (EV_A_ &fs_w);
2470	}	2728	}
2471	}	2729	}
2472		2730
2473	void inline_size	2731	inline_size void
2474	infy_fork (EV_P)	2732	infy_fork (EV_P)
2475	{	2733	{
2476	int slot;	2734	int slot;
2477		2735
2478	if (fs_fd < 0)	2736	if (fs_fd < 0)
…		…
2494	w->wd = -1;	2752	w->wd = -1;
2495		2753
2496	if (fs_fd >= 0)	2754	if (fs_fd >= 0)
2497	infy_add (EV_A_ w); /* re-add, no matter what */	2755	infy_add (EV_A_ w); /* re-add, no matter what */
2498	else	2756	else
2499	ev_timer_start (EV_A_ &w->timer);	2757	ev_timer_again (EV_A_ &w->timer);
2500	}	2758	}
2501
2502	}	2759	}
2503	}	2760	}
2504		2761
		2762	#endif
		2763
		2764	#ifdef _WIN32
		2765	# define EV_LSTAT(p,b) _stati64 (p, b)
		2766	#else
		2767	# define EV_LSTAT(p,b) lstat (p, b)
2505	#endif	2768	#endif
2506		2769
2507	void	2770	void
2508	ev_stat_stat (EV_P_ ev_stat *w)	2771	ev_stat_stat (EV_P_ ev_stat *w)
2509	{	2772	{
…		…
2536	|| w->prev.st_atime != w->attr.st_atime	2799	|| w->prev.st_atime != w->attr.st_atime
2537	|| w->prev.st_mtime != w->attr.st_mtime	2800	|| w->prev.st_mtime != w->attr.st_mtime
2538	|| w->prev.st_ctime != w->attr.st_ctime	2801	|| w->prev.st_ctime != w->attr.st_ctime
2539	) {	2802	) {
2540	#if EV_USE_INOTIFY	2803	#if EV_USE_INOTIFY
		2804	if (fs_fd >= 0)
		2805	{
2541	infy_del (EV_A_ w);	2806	infy_del (EV_A_ w);
2542	infy_add (EV_A_ w);	2807	infy_add (EV_A_ w);
2543	ev_stat_stat (EV_A_ w); /* avoid race... */	2808	ev_stat_stat (EV_A_ w); /* avoid race... */
		2809	}
2544	#endif	2810	#endif
2545		2811
2546	ev_feed_event (EV_A_ w, EV_STAT);	2812	ev_feed_event (EV_A_ w, EV_STAT);
2547	}	2813	}
2548	}	2814	}
…		…
2551	ev_stat_start (EV_P_ ev_stat *w)	2817	ev_stat_start (EV_P_ ev_stat *w)
2552	{	2818	{
2553	if (expect_false (ev_is_active (w)))	2819	if (expect_false (ev_is_active (w)))
2554	return;	2820	return;
2555		2821
2556	/* since we use memcmp, we need to clear any padding data etc. */
2557	memset (&w->prev, 0, sizeof (ev_statdata));
2558	memset (&w->attr, 0, sizeof (ev_statdata));
2559
2560	ev_stat_stat (EV_A_ w);	2822	ev_stat_stat (EV_A_ w);
2561		2823
		2824	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2562	if (w->interval < MIN_STAT_INTERVAL)	2825	w->interval = MIN_STAT_INTERVAL;
2563	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2564		2826
2565	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2827	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2566	ev_set_priority (&w->timer, ev_priority (w));	2828	ev_set_priority (&w->timer, ev_priority (w));
2567		2829
2568	#if EV_USE_INOTIFY	2830	#if EV_USE_INOTIFY
2569	infy_init (EV_A);	2831	infy_init (EV_A);
2570		2832
2571	if (fs_fd >= 0)	2833	if (fs_fd >= 0)
2572	infy_add (EV_A_ w);	2834	infy_add (EV_A_ w);
2573	else	2835	else
2574	#endif	2836	#endif
2575	ev_timer_start (EV_A_ &w->timer);	2837	ev_timer_again (EV_A_ &w->timer);
2576		2838
2577	ev_start (EV_A_ (W)w, 1);	2839	ev_start (EV_A_ (W)w, 1);
2578		2840
2579	EV_FREQUENT_CHECK;	2841	EV_FREQUENT_CHECK;
2580	}	2842	}
…		…
2750	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3012	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2751	}	3013	}
2752	}	3014	}
2753	}	3015	}
2754		3016
		3017	static void
		3018	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3019	{
		3020	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3021
		3022	ev_embed_stop (EV_A_ w);
		3023
		3024	{
		3025	struct ev_loop *loop = w->other;
		3026
		3027	ev_loop_fork (EV_A);
		3028	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3029	}
		3030
		3031	ev_embed_start (EV_A_ w);
		3032	}
		3033
2755	#if 0	3034	#if 0
2756	static void	3035	static void
2757	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3036	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2758	{	3037	{
2759	ev_idle_stop (EV_A_ idle);	3038	ev_idle_stop (EV_A_ idle);
…		…
2766	if (expect_false (ev_is_active (w)))	3045	if (expect_false (ev_is_active (w)))
2767	return;	3046	return;
2768		3047
2769	{	3048	{
2770	struct ev_loop *loop = w->other;	3049	struct ev_loop *loop = w->other;
2771	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3050	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2772	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3051	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2773	}	3052	}
2774		3053
2775	EV_FREQUENT_CHECK;	3054	EV_FREQUENT_CHECK;
2776		3055
…		…
2779		3058
2780	ev_prepare_init (&w->prepare, embed_prepare_cb);	3059	ev_prepare_init (&w->prepare, embed_prepare_cb);
2781	ev_set_priority (&w->prepare, EV_MINPRI);	3060	ev_set_priority (&w->prepare, EV_MINPRI);
2782	ev_prepare_start (EV_A_ &w->prepare);	3061	ev_prepare_start (EV_A_ &w->prepare);
2783		3062
		3063	ev_fork_init (&w->fork, embed_fork_cb);
		3064	ev_fork_start (EV_A_ &w->fork);
		3065
2784	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3066	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2785		3067
2786	ev_start (EV_A_ (W)w, 1);	3068	ev_start (EV_A_ (W)w, 1);
2787		3069
2788	EV_FREQUENT_CHECK;	3070	EV_FREQUENT_CHECK;
…		…
2795	if (expect_false (!ev_is_active (w)))	3077	if (expect_false (!ev_is_active (w)))
2796	return;	3078	return;
2797		3079
2798	EV_FREQUENT_CHECK;	3080	EV_FREQUENT_CHECK;
2799		3081
2800	ev_io_stop (EV_A_ &w->io);	3082	ev_io_stop (EV_A_ &w->io);
2801	ev_prepare_stop (EV_A_ &w->prepare);	3083	ev_prepare_stop (EV_A_ &w->prepare);
2802		3084	ev_fork_stop (EV_A_ &w->fork);
2803	ev_stop (EV_A_ (W)w);
2804		3085
2805	EV_FREQUENT_CHECK;	3086	EV_FREQUENT_CHECK;
2806	}	3087	}
2807	#endif	3088	#endif
2808		3089
…		…
2905	once_cb (EV_P_ struct ev_once *once, int revents)	3186	once_cb (EV_P_ struct ev_once *once, int revents)
2906	{	3187	{
2907	void (*cb)(int revents, void *arg) = once->cb;	3188	void (*cb)(int revents, void *arg) = once->cb;
2908	void *arg = once->arg;	3189	void *arg = once->arg;
2909		3190
2910	ev_io_stop (EV_A_ &once->io);	3191	ev_io_stop (EV_A_ &once->io);
2911	ev_timer_stop (EV_A_ &once->to);	3192	ev_timer_stop (EV_A_ &once->to);
2912	ev_free (once);	3193	ev_free (once);
2913		3194
2914	cb (revents, arg);	3195	cb (revents, arg);
2915	}	3196	}
2916		3197
2917	static void	3198	static void
2918	once_cb_io (EV_P_ ev_io *w, int revents)	3199	once_cb_io (EV_P_ ev_io *w, int revents)
2919	{	3200	{
2920	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3201	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3202
		3203	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2921	}	3204	}
2922		3205
2923	static void	3206	static void
2924	once_cb_to (EV_P_ ev_timer *w, int revents)	3207	once_cb_to (EV_P_ ev_timer *w, int revents)
2925	{	3208	{
2926	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3209	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3210
		3211	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2927	}	3212	}
2928		3213
2929	void	3214	void
2930	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3215	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2931	{	3216	{
…		…
2953	ev_timer_set (&once->to, timeout, 0.);	3238	ev_timer_set (&once->to, timeout, 0.);
2954	ev_timer_start (EV_A_ &once->to);	3239	ev_timer_start (EV_A_ &once->to);
2955	}	3240	}
2956	}	3241	}
2957		3242
		3243	/*****************************************************************************/
		3244
		3245	#if EV_WALK_ENABLE
		3246	void
		3247	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3248	{
		3249	int i, j;
		3250	ev_watcher_list *wl, *wn;
		3251
		3252	if (types & (EV_IO | EV_EMBED))
		3253	for (i = 0; i < anfdmax; ++i)
		3254	for (wl = anfds [i].head; wl; )
		3255	{
		3256	wn = wl->next;
		3257
		3258	#if EV_EMBED_ENABLE
		3259	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3260	{
		3261	if (types & EV_EMBED)
		3262	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3263	}
		3264	else
		3265	#endif
		3266	#if EV_USE_INOTIFY
		3267	if (ev_cb ((ev_io *)wl) == infy_cb)
		3268	;
		3269	else
		3270	#endif
		3271	if ((ev_io *)wl != &pipe_w)
		3272	if (types & EV_IO)
		3273	cb (EV_A_ EV_IO, wl);
		3274
		3275	wl = wn;
		3276	}
		3277
		3278	if (types & (EV_TIMER | EV_STAT))
		3279	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3280	#if EV_STAT_ENABLE
		3281	/*TODO: timer is not always active*/
		3282	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3283	{
		3284	if (types & EV_STAT)
		3285	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3286	}
		3287	else
		3288	#endif
		3289	if (types & EV_TIMER)
		3290	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3291
		3292	#if EV_PERIODIC_ENABLE
		3293	if (types & EV_PERIODIC)
		3294	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3295	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3296	#endif
		3297
		3298	#if EV_IDLE_ENABLE
		3299	if (types & EV_IDLE)
		3300	for (j = NUMPRI; i--; )
		3301	for (i = idlecnt [j]; i--; )
		3302	cb (EV_A_ EV_IDLE, idles [j][i]);
		3303	#endif
		3304
		3305	#if EV_FORK_ENABLE
		3306	if (types & EV_FORK)
		3307	for (i = forkcnt; i--; )
		3308	if (ev_cb (forks [i]) != embed_fork_cb)
		3309	cb (EV_A_ EV_FORK, forks [i]);
		3310	#endif
		3311
		3312	#if EV_ASYNC_ENABLE
		3313	if (types & EV_ASYNC)
		3314	for (i = asynccnt; i--; )
		3315	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3316	#endif
		3317
		3318	if (types & EV_PREPARE)
		3319	for (i = preparecnt; i--; )
		3320	#if EV_EMBED_ENABLE
		3321	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3322	#endif
		3323	cb (EV_A_ EV_PREPARE, prepares [i]);
		3324
		3325	if (types & EV_CHECK)
		3326	for (i = checkcnt; i--; )
		3327	cb (EV_A_ EV_CHECK, checks [i]);
		3328
		3329	if (types & EV_SIGNAL)
		3330	for (i = 0; i < signalmax; ++i)
		3331	for (wl = signals [i].head; wl; )
		3332	{
		3333	wn = wl->next;
		3334	cb (EV_A_ EV_SIGNAL, wl);
		3335	wl = wn;
		3336	}
		3337
		3338	if (types & EV_CHILD)
		3339	for (i = EV_PID_HASHSIZE; i--; )
		3340	for (wl = childs [i]; wl; )
		3341	{
		3342	wn = wl->next;
		3343	cb (EV_A_ EV_CHILD, wl);
		3344	wl = wn;
		3345	}
		3346	/* EV_STAT 0x00001000 /* stat data changed */
		3347	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3348	}
		3349	#endif
		3350
2958	#if EV_MULTIPLICITY	3351	#if EV_MULTIPLICITY
2959	#include "ev_wrap.h"	3352	#include "ev_wrap.h"
2960	#endif	3353	#endif
2961		3354
2962	#ifdef __cplusplus	3355	#ifdef __cplusplus

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