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Comparing libev/ev.c (file contents):
Revision 1.273 by root, Mon Nov 3 14:27:06 2008 UTC vs.
Revision 1.294 by root, Wed Jul 8 02:46:05 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
…		…
164	# endif	178	# endif
165	#endif	179	#endif
166		180
167	/* this block tries to deduce configuration from header-defined symbols and defaults */	181	/* this block tries to deduce configuration from header-defined symbols and defaults */
168		182
		183	#ifndef EV_USE_CLOCK_SYSCALL
		184	# if __linux && __GLIBC__ >= 2
		185	# define EV_USE_CLOCK_SYSCALL 1
		186	# else
		187	# define EV_USE_CLOCK_SYSCALL 0
		188	# endif
		189	#endif
		190
169	#ifndef EV_USE_MONOTONIC	191	#ifndef EV_USE_MONOTONIC
170	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0	192	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
171	# define EV_USE_MONOTONIC 1	193	# define EV_USE_MONOTONIC 1
172	# else	194	# else
173	# define EV_USE_MONOTONIC 0	195	# define EV_USE_MONOTONIC 0
174	# endif	196	# endif
175	#endif	197	#endif
176		198
177	#ifndef EV_USE_REALTIME	199	#ifndef EV_USE_REALTIME
178	# define EV_USE_REALTIME 0	200	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
179	#endif	201	#endif
180		202
181	#ifndef EV_USE_NANOSLEEP	203	#ifndef EV_USE_NANOSLEEP
182	# if _POSIX_C_SOURCE >= 199309L	204	# if _POSIX_C_SOURCE >= 199309L
183	# define EV_USE_NANOSLEEP 1	205	# define EV_USE_NANOSLEEP 1
…		…
260	# define EV_USE_4HEAP !EV_MINIMAL	282	# define EV_USE_4HEAP !EV_MINIMAL
261	#endif	283	#endif
262		284
263	#ifndef EV_HEAP_CACHE_AT	285	#ifndef EV_HEAP_CACHE_AT
264	# define EV_HEAP_CACHE_AT !EV_MINIMAL	286	# define EV_HEAP_CACHE_AT !EV_MINIMAL
		287	#endif
		288
		289	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		290	/* which makes programs even slower. might work on other unices, too. */
		291	#if EV_USE_CLOCK_SYSCALL
		292	# include <syscall.h>
		293	# ifdef SYS_clock_gettime
		294	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		295	# undef EV_USE_MONOTONIC
		296	# define EV_USE_MONOTONIC 1
		297	# else
		298	# undef EV_USE_CLOCK_SYSCALL
		299	# define EV_USE_CLOCK_SYSCALL 0
		300	# endif
265	#endif	301	#endif
266		302
267	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	303	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
268		304
269	#ifndef CLOCK_MONOTONIC	305	#ifndef CLOCK_MONOTONIC
…		…
368	typedef ev_watcher_time *WT;	404	typedef ev_watcher_time *WT;
369		405
370	#define ev_active(w) ((W)(w))->active	406	#define ev_active(w) ((W)(w))->active
371	#define ev_at(w) ((WT)(w))->at	407	#define ev_at(w) ((WT)(w))->at
372		408
373	#if EV_USE_MONOTONIC	409	#if EV_USE_REALTIME
374	/* sig_atomic_t is used to avoid per-thread variables or locking but still */	410	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
375	/* giving it a reasonably high chance of working on typical architetcures */	411	/* giving it a reasonably high chance of working on typical architetcures */
		412	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		413	#endif
		414
		415	#if EV_USE_MONOTONIC
376	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	416	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
377	#endif	417	#endif
378		418
379	#ifdef _WIN32	419	#ifdef _WIN32
380	# include "ev_win32.c"	420	# include "ev_win32.c"
…		…
445	#define ev_malloc(size) ev_realloc (0, (size))	485	#define ev_malloc(size) ev_realloc (0, (size))
446	#define ev_free(ptr) ev_realloc ((ptr), 0)	486	#define ev_free(ptr) ev_realloc ((ptr), 0)
447		487
448	/*****************************************************************************/	488	/*****************************************************************************/
449		489
		490	/* file descriptor info structure */
450	typedef struct	491	typedef struct
451	{	492	{
452	WL head;	493	WL head;
453	unsigned char events;	494	unsigned char events; /* the events watched for */
454	unsigned char reify;	495	unsigned char reify; /* flag set when this ANFD needs reification */
455	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */	496	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
456	unsigned char unused;	497	unsigned char unused;
457	#if EV_USE_EPOLL	498	#if EV_USE_EPOLL
458	unsigned int egen; /* generation counter to counter epoll bugs */	499	unsigned int egen; /* generation counter to counter epoll bugs */
459	#endif	500	#endif
460	#if EV_SELECT_IS_WINSOCKET	501	#if EV_SELECT_IS_WINSOCKET
461	SOCKET handle;	502	SOCKET handle;
462	#endif	503	#endif
463	} ANFD;	504	} ANFD;
464		505
		506	/* stores the pending event set for a given watcher */
465	typedef struct	507	typedef struct
466	{	508	{
467	W w;	509	W w;
468	int events;	510	int events; /* the pending event set for the given watcher */
469	} ANPENDING;	511	} ANPENDING;
470		512
471	#if EV_USE_INOTIFY	513	#if EV_USE_INOTIFY
472	/* hash table entry per inotify-id */	514	/* hash table entry per inotify-id */
473	typedef struct	515	typedef struct
…		…
476	} ANFS;	518	} ANFS;
477	#endif	519	#endif
478		520
479	/* Heap Entry */	521	/* Heap Entry */
480	#if EV_HEAP_CACHE_AT	522	#if EV_HEAP_CACHE_AT
		523	/* a heap element */
481	typedef struct {	524	typedef struct {
482	ev_tstamp at;	525	ev_tstamp at;
483	WT w;	526	WT w;
484	} ANHE;	527	} ANHE;
485		528
486	#define ANHE_w(he) (he).w /* access watcher, read-write */	529	#define ANHE_w(he) (he).w /* access watcher, read-write */
487	#define ANHE_at(he) (he).at /* access cached at, read-only */	530	#define ANHE_at(he) (he).at /* access cached at, read-only */
488	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */	531	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
489	#else	532	#else
		533	/* a heap element */
490	typedef WT ANHE;	534	typedef WT ANHE;
491		535
492	#define ANHE_w(he) (he)	536	#define ANHE_w(he) (he)
493	#define ANHE_at(he) (he)->at	537	#define ANHE_at(he) (he)->at
494	#define ANHE_at_cache(he)	538	#define ANHE_at_cache(he)
…		…
520		564
521	#endif	565	#endif
522		566
523	/*****************************************************************************/	567	/*****************************************************************************/
524		568
		569	#ifndef EV_HAVE_EV_TIME
525	ev_tstamp	570	ev_tstamp
526	ev_time (void)	571	ev_time (void)
527	{	572	{
528	#if EV_USE_REALTIME	573	#if EV_USE_REALTIME
		574	if (expect_true (have_realtime))
		575	{
529	struct timespec ts;	576	struct timespec ts;
530	clock_gettime (CLOCK_REALTIME, &ts);	577	clock_gettime (CLOCK_REALTIME, &ts);
531	return ts.tv_sec + ts.tv_nsec * 1e-9;	578	return ts.tv_sec + ts.tv_nsec * 1e-9;
532	#else	579	}
		580	#endif
		581
533	struct timeval tv;	582	struct timeval tv;
534	gettimeofday (&tv, 0);	583	gettimeofday (&tv, 0);
535	return tv.tv_sec + tv.tv_usec * 1e-6;	584	return tv.tv_sec + tv.tv_usec * 1e-6;
536	#endif
537	}	585	}
		586	#endif
538		587
539	ev_tstamp inline_size	588	inline_size ev_tstamp
540	get_clock (void)	589	get_clock (void)
541	{	590	{
542	#if EV_USE_MONOTONIC	591	#if EV_USE_MONOTONIC
543	if (expect_true (have_monotonic))	592	if (expect_true (have_monotonic))
544	{	593	{
…		…
578		627
579	tv.tv_sec = (time_t)delay;	628	tv.tv_sec = (time_t)delay;
580	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	629	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
581		630
582	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */	631	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
583	/* somehting nto guaranteed by newer posix versions, but guaranteed */	632	/* somehting not guaranteed by newer posix versions, but guaranteed */
584	/* by older ones */	633	/* by older ones */
585	select (0, 0, 0, 0, &tv);	634	select (0, 0, 0, 0, &tv);
586	#endif	635	#endif
587	}	636	}
588	}	637	}
589		638
590	/*****************************************************************************/	639	/*****************************************************************************/
591		640
592	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	641	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
593		642
594	int inline_size	643	/* find a suitable new size for the given array, */
		644	/* hopefully by rounding to a ncie-to-malloc size */
		645	inline_size int
595	array_nextsize (int elem, int cur, int cnt)	646	array_nextsize (int elem, int cur, int cnt)
596	{	647	{
597	int ncur = cur + 1;	648	int ncur = cur + 1;
598		649
599	do	650	do
…		…
640	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	691	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
641	}	692	}
642	#endif	693	#endif
643		694
644	#define array_free(stem, idx) \	695	#define array_free(stem, idx) \
645	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	696	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
646		697
647	/*****************************************************************************/	698	/*****************************************************************************/
		699
		700	/* dummy callback for pending events */
		701	static void noinline
		702	pendingcb (EV_P_ ev_prepare *w, int revents)
		703	{
		704	}
648		705
649	void noinline	706	void noinline
650	ev_feed_event (EV_P_ void *w, int revents)	707	ev_feed_event (EV_P_ void *w, int revents)
651	{	708	{
652	W w_ = (W)w;	709	W w_ = (W)w;
…		…
661	pendings [pri][w_->pending - 1].w = w_;	718	pendings [pri][w_->pending - 1].w = w_;
662	pendings [pri][w_->pending - 1].events = revents;	719	pendings [pri][w_->pending - 1].events = revents;
663	}	720	}
664	}	721	}
665		722
666	void inline_speed	723	inline_speed void
		724	feed_reverse (EV_P_ W w)
		725	{
		726	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		727	rfeeds [rfeedcnt++] = w;
		728	}
		729
		730	inline_size void
		731	feed_reverse_done (EV_P_ int revents)
		732	{
		733	do
		734	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		735	while (rfeedcnt);
		736	}
		737
		738	inline_speed void
667	queue_events (EV_P_ W *events, int eventcnt, int type)	739	queue_events (EV_P_ W *events, int eventcnt, int type)
668	{	740	{
669	int i;	741	int i;
670		742
671	for (i = 0; i < eventcnt; ++i)	743	for (i = 0; i < eventcnt; ++i)
672	ev_feed_event (EV_A_ events [i], type);	744	ev_feed_event (EV_A_ events [i], type);
673	}	745	}
674		746
675	/*****************************************************************************/	747	/*****************************************************************************/
676		748
677	void inline_speed	749	inline_speed void
678	fd_event (EV_P_ int fd, int revents)	750	fd_event (EV_P_ int fd, int revents)
679	{	751	{
680	ANFD *anfd = anfds + fd;	752	ANFD *anfd = anfds + fd;
681	ev_io *w;	753	ev_io *w;
682		754
…		…
694	{	766	{
695	if (fd >= 0 && fd < anfdmax)	767	if (fd >= 0 && fd < anfdmax)
696	fd_event (EV_A_ fd, revents);	768	fd_event (EV_A_ fd, revents);
697	}	769	}
698		770
699	void inline_size	771	/* make sure the external fd watch events are in-sync */
		772	/* with the kernel/libev internal state */
		773	inline_size void
700	fd_reify (EV_P)	774	fd_reify (EV_P)
701	{	775	{
702	int i;	776	int i;
703		777
704	for (i = 0; i < fdchangecnt; ++i)	778	for (i = 0; i < fdchangecnt; ++i)
…		…
719	#ifdef EV_FD_TO_WIN32_HANDLE	793	#ifdef EV_FD_TO_WIN32_HANDLE
720	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	794	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
721	#else	795	#else
722	anfd->handle = _get_osfhandle (fd);	796	anfd->handle = _get_osfhandle (fd);
723	#endif	797	#endif
724	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	798	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
725	}	799	}
726	#endif	800	#endif
727		801
728	{	802	{
729	unsigned char o_events = anfd->events;	803	unsigned char o_events = anfd->events;
730	unsigned char o_reify = anfd->reify;	804	unsigned char o_reify = anfd->reify;
731		805
732	anfd->reify = 0;	806	anfd->reify = 0;
733	anfd->events = events;	807	anfd->events = events;
734		808
735	if (o_events != events || o_reify & EV_IOFDSET)	809	if (o_events != events || o_reify & EV__IOFDSET)
736	backend_modify (EV_A_ fd, o_events, events);	810	backend_modify (EV_A_ fd, o_events, events);
737	}	811	}
738	}	812	}
739		813
740	fdchangecnt = 0;	814	fdchangecnt = 0;
741	}	815	}
742		816
743	void inline_size	817	/* something about the given fd changed */
		818	inline_size void
744	fd_change (EV_P_ int fd, int flags)	819	fd_change (EV_P_ int fd, int flags)
745	{	820	{
746	unsigned char reify = anfds [fd].reify;	821	unsigned char reify = anfds [fd].reify;
747	anfds [fd].reify |= flags;	822	anfds [fd].reify |= flags;
748		823
…		…
752	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	827	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
753	fdchanges [fdchangecnt - 1] = fd;	828	fdchanges [fdchangecnt - 1] = fd;
754	}	829	}
755	}	830	}
756		831
757	void inline_speed	832	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		833	inline_speed void
758	fd_kill (EV_P_ int fd)	834	fd_kill (EV_P_ int fd)
759	{	835	{
760	ev_io *w;	836	ev_io *w;
761		837
762	while ((w = (ev_io *)anfds [fd].head))	838	while ((w = (ev_io *)anfds [fd].head))
…		…
764	ev_io_stop (EV_A_ w);	840	ev_io_stop (EV_A_ w);
765	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	841	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
766	}	842	}
767	}	843	}
768		844
769	int inline_size	845	/* check whether the given fd is atcually valid, for error recovery */
		846	inline_size int
770	fd_valid (int fd)	847	fd_valid (int fd)
771	{	848	{
772	#ifdef _WIN32	849	#ifdef _WIN32
773	return _get_osfhandle (fd) != -1;	850	return _get_osfhandle (fd) != -1;
774	#else	851	#else
…		…
811	for (fd = 0; fd < anfdmax; ++fd)	888	for (fd = 0; fd < anfdmax; ++fd)
812	if (anfds [fd].events)	889	if (anfds [fd].events)
813	{	890	{
814	anfds [fd].events = 0;	891	anfds [fd].events = 0;
815	anfds [fd].emask = 0;	892	anfds [fd].emask = 0;
816	fd_change (EV_A_ fd, EV_IOFDSET | 1);	893	fd_change (EV_A_ fd, EV__IOFDSET | 1);
817	}	894	}
818	}	895	}
819		896
820	/*****************************************************************************/	897	/*****************************************************************************/
821		898
…		…
837	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	914	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
838	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)	915	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
839	#define UPHEAP_DONE(p,k) ((p) == (k))	916	#define UPHEAP_DONE(p,k) ((p) == (k))
840		917
841	/* away from the root */	918	/* away from the root */
842	void inline_speed	919	inline_speed void
843	downheap (ANHE *heap, int N, int k)	920	downheap (ANHE *heap, int N, int k)
844	{	921	{
845	ANHE he = heap [k];	922	ANHE he = heap [k];
846	ANHE *E = heap + N + HEAP0;	923	ANHE *E = heap + N + HEAP0;
847		924
…		…
887	#define HEAP0 1	964	#define HEAP0 1
888	#define HPARENT(k) ((k) >> 1)	965	#define HPARENT(k) ((k) >> 1)
889	#define UPHEAP_DONE(p,k) (!(p))	966	#define UPHEAP_DONE(p,k) (!(p))
890		967
891	/* away from the root */	968	/* away from the root */
892	void inline_speed	969	inline_speed void
893	downheap (ANHE *heap, int N, int k)	970	downheap (ANHE *heap, int N, int k)
894	{	971	{
895	ANHE he = heap [k];	972	ANHE he = heap [k];
896		973
897	for (;;)	974	for (;;)
…		…
917	ev_active (ANHE_w (he)) = k;	994	ev_active (ANHE_w (he)) = k;
918	}	995	}
919	#endif	996	#endif
920		997
921	/* towards the root */	998	/* towards the root */
922	void inline_speed	999	inline_speed void
923	upheap (ANHE *heap, int k)	1000	upheap (ANHE *heap, int k)
924	{	1001	{
925	ANHE he = heap [k];	1002	ANHE he = heap [k];
926		1003
927	for (;;)	1004	for (;;)
…		…
938		1015
939	heap [k] = he;	1016	heap [k] = he;
940	ev_active (ANHE_w (he)) = k;	1017	ev_active (ANHE_w (he)) = k;
941	}	1018	}
942		1019
943	void inline_size	1020	/* move an element suitably so it is in a correct place */
		1021	inline_size void
944	adjustheap (ANHE *heap, int N, int k)	1022	adjustheap (ANHE *heap, int N, int k)
945	{	1023	{
946	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1024	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
947	upheap (heap, k);	1025	upheap (heap, k);
948	else	1026	else
949	downheap (heap, N, k);	1027	downheap (heap, N, k);
950	}	1028	}
951		1029
952	/* rebuild the heap: this function is used only once and executed rarely */	1030	/* rebuild the heap: this function is used only once and executed rarely */
953	void inline_size	1031	inline_size void
954	reheap (ANHE *heap, int N)	1032	reheap (ANHE *heap, int N)
955	{	1033	{
956	int i;	1034	int i;
957		1035
958	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */	1036	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
…		…
961	upheap (heap, i + HEAP0);	1039	upheap (heap, i + HEAP0);
962	}	1040	}
963		1041
964	/*****************************************************************************/	1042	/*****************************************************************************/
965		1043
		1044	/* associate signal watchers to a signal signal */
966	typedef struct	1045	typedef struct
967	{	1046	{
968	WL head;	1047	WL head;
969	EV_ATOMIC_T gotsig;	1048	EV_ATOMIC_T gotsig;
970	} ANSIG;	1049	} ANSIG;
…		…
974		1053
975	static EV_ATOMIC_T gotsig;	1054	static EV_ATOMIC_T gotsig;
976		1055
977	/*****************************************************************************/	1056	/*****************************************************************************/
978		1057
979	void inline_speed	1058	/* used to prepare libev internal fd's */
		1059	/* this is not fork-safe */
		1060	inline_speed void
980	fd_intern (int fd)	1061	fd_intern (int fd)
981	{	1062	{
982	#ifdef _WIN32	1063	#ifdef _WIN32
983	unsigned long arg = 1;	1064	unsigned long arg = 1;
984	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1065	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
989	}	1070	}
990		1071
991	static void noinline	1072	static void noinline
992	evpipe_init (EV_P)	1073	evpipe_init (EV_P)
993	{	1074	{
994	if (!ev_is_active (&pipeev))	1075	if (!ev_is_active (&pipe_w))
995	{	1076	{
996	#if EV_USE_EVENTFD	1077	#if EV_USE_EVENTFD
997	if ((evfd = eventfd (0, 0)) >= 0)	1078	if ((evfd = eventfd (0, 0)) >= 0)
998	{	1079	{
999	evpipe [0] = -1;	1080	evpipe [0] = -1;
1000	fd_intern (evfd);	1081	fd_intern (evfd);
1001	ev_io_set (&pipeev, evfd, EV_READ);	1082	ev_io_set (&pipe_w, evfd, EV_READ);
1002	}	1083	}
1003	else	1084	else
1004	#endif	1085	#endif
1005	{	1086	{
1006	while (pipe (evpipe))	1087	while (pipe (evpipe))
1007	ev_syserr ("(libev) error creating signal/async pipe");	1088	ev_syserr ("(libev) error creating signal/async pipe");
1008		1089
1009	fd_intern (evpipe [0]);	1090	fd_intern (evpipe [0]);
1010	fd_intern (evpipe [1]);	1091	fd_intern (evpipe [1]);
1011	ev_io_set (&pipeev, evpipe [0], EV_READ);	1092	ev_io_set (&pipe_w, evpipe [0], EV_READ);
1012	}	1093	}
1013		1094
1014	ev_io_start (EV_A_ &pipeev);	1095	ev_io_start (EV_A_ &pipe_w);
1015	ev_unref (EV_A); /* watcher should not keep loop alive */	1096	ev_unref (EV_A); /* watcher should not keep loop alive */
1016	}	1097	}
1017	}	1098	}
1018		1099
1019	void inline_size	1100	inline_size void
1020	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1101	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1021	{	1102	{
1022	if (!*flag)	1103	if (!*flag)
1023	{	1104	{
1024	int old_errno = errno; /* save errno because write might clobber it */	1105	int old_errno = errno; /* save errno because write might clobber it */
…		…
1037		1118
1038	errno = old_errno;	1119	errno = old_errno;
1039	}	1120	}
1040	}	1121	}
1041		1122
		1123	/* called whenever the libev signal pipe */
		1124	/* got some events (signal, async) */
1042	static void	1125	static void
1043	pipecb (EV_P_ ev_io *iow, int revents)	1126	pipecb (EV_P_ ev_io *iow, int revents)
1044	{	1127	{
1045	#if EV_USE_EVENTFD	1128	#if EV_USE_EVENTFD
1046	if (evfd >= 0)	1129	if (evfd >= 0)
…		…
1102	ev_feed_signal_event (EV_P_ int signum)	1185	ev_feed_signal_event (EV_P_ int signum)
1103	{	1186	{
1104	WL w;	1187	WL w;
1105		1188
1106	#if EV_MULTIPLICITY	1189	#if EV_MULTIPLICITY
1107	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1190	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1108	#endif	1191	#endif
1109		1192
1110	--signum;	1193	--signum;
1111		1194
1112	if (signum < 0 || signum >= signalmax)	1195	if (signum < 0 || signum >= signalmax)
…		…
1128		1211
1129	#ifndef WIFCONTINUED	1212	#ifndef WIFCONTINUED
1130	# define WIFCONTINUED(status) 0	1213	# define WIFCONTINUED(status) 0
1131	#endif	1214	#endif
1132		1215
1133	void inline_speed	1216	/* handle a single child status event */
		1217	inline_speed void
1134	child_reap (EV_P_ int chain, int pid, int status)	1218	child_reap (EV_P_ int chain, int pid, int status)
1135	{	1219	{
1136	ev_child *w;	1220	ev_child *w;
1137	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1221	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1138		1222
…		…
1151		1235
1152	#ifndef WCONTINUED	1236	#ifndef WCONTINUED
1153	# define WCONTINUED 0	1237	# define WCONTINUED 0
1154	#endif	1238	#endif
1155		1239
		1240	/* called on sigchld etc., calls waitpid */
1156	static void	1241	static void
1157	childcb (EV_P_ ev_signal *sw, int revents)	1242	childcb (EV_P_ ev_signal *sw, int revents)
1158	{	1243	{
1159	int pid, status;	1244	int pid, status;
1160		1245
…		…
1241	/* kqueue is borked on everything but netbsd apparently */	1326	/* kqueue is borked on everything but netbsd apparently */
1242	/* it usually doesn't work correctly on anything but sockets and pipes */	1327	/* it usually doesn't work correctly on anything but sockets and pipes */
1243	flags &= ~EVBACKEND_KQUEUE;	1328	flags &= ~EVBACKEND_KQUEUE;
1244	#endif	1329	#endif
1245	#ifdef __APPLE__	1330	#ifdef __APPLE__
1246	// flags &= ~EVBACKEND_KQUEUE; for documentation	1331	/* only select works correctly on that "unix-certified" platform */
1247	flags &= ~EVBACKEND_POLL;	1332	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1333	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1248	#endif	1334	#endif
1249		1335
1250	return flags;	1336	return flags;
1251	}	1337	}
1252		1338
…		…
1272	ev_loop_count (EV_P)	1358	ev_loop_count (EV_P)
1273	{	1359	{
1274	return loop_count;	1360	return loop_count;
1275	}	1361	}
1276		1362
		1363	unsigned int
		1364	ev_loop_depth (EV_P)
		1365	{
		1366	return loop_depth;
		1367	}
		1368
1277	void	1369	void
1278	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1370	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1279	{	1371	{
1280	io_blocktime = interval;	1372	io_blocktime = interval;
1281	}	1373	}
…		…
1284	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1376	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1285	{	1377	{
1286	timeout_blocktime = interval;	1378	timeout_blocktime = interval;
1287	}	1379	}
1288		1380
		1381	/* initialise a loop structure, must be zero-initialised */
1289	static void noinline	1382	static void noinline
1290	loop_init (EV_P_ unsigned int flags)	1383	loop_init (EV_P_ unsigned int flags)
1291	{	1384	{
1292	if (!backend)	1385	if (!backend)
1293	{	1386	{
		1387	#if EV_USE_REALTIME
		1388	if (!have_realtime)
		1389	{
		1390	struct timespec ts;
		1391
		1392	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1393	have_realtime = 1;
		1394	}
		1395	#endif
		1396
1294	#if EV_USE_MONOTONIC	1397	#if EV_USE_MONOTONIC
		1398	if (!have_monotonic)
1295	{	1399	{
1296	struct timespec ts;	1400	struct timespec ts;
		1401
1297	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1402	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1298	have_monotonic = 1;	1403	have_monotonic = 1;
1299	}	1404	}
1300	#endif	1405	#endif
1301		1406
1302	ev_rt_now = ev_time ();	1407	ev_rt_now = ev_time ();
1303	mn_now = get_clock ();	1408	mn_now = get_clock ();
1304	now_floor = mn_now;	1409	now_floor = mn_now;
…		…
1341	#endif	1446	#endif
1342	#if EV_USE_SELECT	1447	#if EV_USE_SELECT
1343	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1448	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1344	#endif	1449	#endif
1345		1450
		1451	ev_prepare_init (&pending_w, pendingcb);
		1452
1346	ev_init (&pipeev, pipecb);	1453	ev_init (&pipe_w, pipecb);
1347	ev_set_priority (&pipeev, EV_MAXPRI);	1454	ev_set_priority (&pipe_w, EV_MAXPRI);
1348	}	1455	}
1349	}	1456	}
1350		1457
		1458	/* free up a loop structure */
1351	static void noinline	1459	static void noinline
1352	loop_destroy (EV_P)	1460	loop_destroy (EV_P)
1353	{	1461	{
1354	int i;	1462	int i;
1355		1463
1356	if (ev_is_active (&pipeev))	1464	if (ev_is_active (&pipe_w))
1357	{	1465	{
1358	ev_ref (EV_A); /* signal watcher */	1466	ev_ref (EV_A); /* signal watcher */
1359	ev_io_stop (EV_A_ &pipeev);	1467	ev_io_stop (EV_A_ &pipe_w);
1360		1468
1361	#if EV_USE_EVENTFD	1469	#if EV_USE_EVENTFD
1362	if (evfd >= 0)	1470	if (evfd >= 0)
1363	close (evfd);	1471	close (evfd);
1364	#endif	1472	#endif
…		…
1403	}	1511	}
1404		1512
1405	ev_free (anfds); anfdmax = 0;	1513	ev_free (anfds); anfdmax = 0;
1406		1514
1407	/* have to use the microsoft-never-gets-it-right macro */	1515	/* have to use the microsoft-never-gets-it-right macro */
		1516	array_free (rfeed, EMPTY);
1408	array_free (fdchange, EMPTY);	1517	array_free (fdchange, EMPTY);
1409	array_free (timer, EMPTY);	1518	array_free (timer, EMPTY);
1410	#if EV_PERIODIC_ENABLE	1519	#if EV_PERIODIC_ENABLE
1411	array_free (periodic, EMPTY);	1520	array_free (periodic, EMPTY);
1412	#endif	1521	#endif
…		…
1421		1530
1422	backend = 0;	1531	backend = 0;
1423	}	1532	}
1424		1533
1425	#if EV_USE_INOTIFY	1534	#if EV_USE_INOTIFY
1426	void inline_size infy_fork (EV_P);	1535	inline_size void infy_fork (EV_P);
1427	#endif	1536	#endif
1428		1537
1429	void inline_size	1538	inline_size void
1430	loop_fork (EV_P)	1539	loop_fork (EV_P)
1431	{	1540	{
1432	#if EV_USE_PORT	1541	#if EV_USE_PORT
1433	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1542	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1434	#endif	1543	#endif
…		…
1440	#endif	1549	#endif
1441	#if EV_USE_INOTIFY	1550	#if EV_USE_INOTIFY
1442	infy_fork (EV_A);	1551	infy_fork (EV_A);
1443	#endif	1552	#endif
1444		1553
1445	if (ev_is_active (&pipeev))	1554	if (ev_is_active (&pipe_w))
1446	{	1555	{
1447	/* this "locks" the handlers against writing to the pipe */	1556	/* this "locks" the handlers against writing to the pipe */
1448	/* while we modify the fd vars */	1557	/* while we modify the fd vars */
1449	gotsig = 1;	1558	gotsig = 1;
1450	#if EV_ASYNC_ENABLE	1559	#if EV_ASYNC_ENABLE
1451	gotasync = 1;	1560	gotasync = 1;
1452	#endif	1561	#endif
1453		1562
1454	ev_ref (EV_A);	1563	ev_ref (EV_A);
1455	ev_io_stop (EV_A_ &pipeev);	1564	ev_io_stop (EV_A_ &pipe_w);
1456		1565
1457	#if EV_USE_EVENTFD	1566	#if EV_USE_EVENTFD
1458	if (evfd >= 0)	1567	if (evfd >= 0)
1459	close (evfd);	1568	close (evfd);
1460	#endif	1569	#endif
…		…
1465	close (evpipe [1]);	1574	close (evpipe [1]);
1466	}	1575	}
1467		1576
1468	evpipe_init (EV_A);	1577	evpipe_init (EV_A);
1469	/* now iterate over everything, in case we missed something */	1578	/* now iterate over everything, in case we missed something */
1470	pipecb (EV_A_ &pipeev, EV_READ);	1579	pipecb (EV_A_ &pipe_w, EV_READ);
1471	}	1580	}
1472		1581
1473	postfork = 0;	1582	postfork = 0;
1474	}	1583	}
1475		1584
…		…
1505		1614
1506	#if EV_VERIFY	1615	#if EV_VERIFY
1507	static void noinline	1616	static void noinline
1508	verify_watcher (EV_P_ W w)	1617	verify_watcher (EV_P_ W w)
1509	{	1618	{
1510	assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));	1619	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1511		1620
1512	if (w->pending)	1621	if (w->pending)
1513	assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));	1622	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1514	}	1623	}
1515		1624
1516	static void noinline	1625	static void noinline
1517	verify_heap (EV_P_ ANHE *heap, int N)	1626	verify_heap (EV_P_ ANHE *heap, int N)
1518	{	1627	{
1519	int i;	1628	int i;
1520		1629
1521	for (i = HEAP0; i < N + HEAP0; ++i)	1630	for (i = HEAP0; i < N + HEAP0; ++i)
1522	{	1631	{
1523	assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));	1632	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1524	assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));	1633	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1525	assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));	1634	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1526		1635
1527	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));	1636	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1528	}	1637	}
1529	}	1638	}
1530		1639
1531	static void noinline	1640	static void noinline
1532	array_verify (EV_P_ W *ws, int cnt)	1641	array_verify (EV_P_ W *ws, int cnt)
1533	{	1642	{
1534	while (cnt--)	1643	while (cnt--)
1535	{	1644	{
1536	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));	1645	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1537	verify_watcher (EV_A_ ws [cnt]);	1646	verify_watcher (EV_A_ ws [cnt]);
1538	}	1647	}
1539	}	1648	}
1540	#endif	1649	#endif
1541		1650
…		…
1548		1657
1549	assert (activecnt >= -1);	1658	assert (activecnt >= -1);
1550		1659
1551	assert (fdchangemax >= fdchangecnt);	1660	assert (fdchangemax >= fdchangecnt);
1552	for (i = 0; i < fdchangecnt; ++i)	1661	for (i = 0; i < fdchangecnt; ++i)
1553	assert (("negative fd in fdchanges", fdchanges [i] >= 0));	1662	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1554		1663
1555	assert (anfdmax >= 0);	1664	assert (anfdmax >= 0);
1556	for (i = 0; i < anfdmax; ++i)	1665	for (i = 0; i < anfdmax; ++i)
1557	for (w = anfds [i].head; w; w = w->next)	1666	for (w = anfds [i].head; w; w = w->next)
1558	{	1667	{
1559	verify_watcher (EV_A_ (W)w);	1668	verify_watcher (EV_A_ (W)w);
1560	assert (("inactive fd watcher on anfd list", ev_active (w) == 1));	1669	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1561	assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));	1670	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1562	}	1671	}
1563		1672
1564	assert (timermax >= timercnt);	1673	assert (timermax >= timercnt);
1565	verify_heap (EV_A_ timers, timercnt);	1674	verify_heap (EV_A_ timers, timercnt);
1566		1675
…		…
1671	ev_invoke (EV_P_ void *w, int revents)	1780	ev_invoke (EV_P_ void *w, int revents)
1672	{	1781	{
1673	EV_CB_INVOKE ((W)w, revents);	1782	EV_CB_INVOKE ((W)w, revents);
1674	}	1783	}
1675		1784
1676	void inline_speed	1785	inline_speed void
1677	call_pending (EV_P)	1786	call_pending (EV_P)
1678	{	1787	{
1679	int pri;	1788	int pri;
1680		1789
1681	for (pri = NUMPRI; pri--; )	1790	for (pri = NUMPRI; pri--; )
1682	while (pendingcnt [pri])	1791	while (pendingcnt [pri])
1683	{	1792	{
1684	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1793	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1685		1794
1686	if (expect_true (p->w))
1687	{
1688	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1795	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1796	/* ^ this is no longer true, as pending_w could be here */
1689		1797
1690	p->w->pending = 0;	1798	p->w->pending = 0;
1691	EV_CB_INVOKE (p->w, p->events);	1799	EV_CB_INVOKE (p->w, p->events);
1692	EV_FREQUENT_CHECK;	1800	EV_FREQUENT_CHECK;
1693	}
1694	}	1801	}
1695	}	1802	}
1696		1803
1697	#if EV_IDLE_ENABLE	1804	#if EV_IDLE_ENABLE
1698	void inline_size	1805	/* make idle watchers pending. this handles the "call-idle */
		1806	/* only when higher priorities are idle" logic */
		1807	inline_size void
1699	idle_reify (EV_P)	1808	idle_reify (EV_P)
1700	{	1809	{
1701	if (expect_false (idleall))	1810	if (expect_false (idleall))
1702	{	1811	{
1703	int pri;	1812	int pri;
…		…
1715	}	1824	}
1716	}	1825	}
1717	}	1826	}
1718	#endif	1827	#endif
1719		1828
1720	void inline_size	1829	/* make timers pending */
		1830	inline_size void
1721	timers_reify (EV_P)	1831	timers_reify (EV_P)
1722	{	1832	{
1723	EV_FREQUENT_CHECK;	1833	EV_FREQUENT_CHECK;
1724		1834
1725	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	1835	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1726	{	1836	{
1727	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	1837	do
1728
1729	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1730
1731	/* first reschedule or stop timer */
1732	if (w->repeat)
1733	{	1838	{
		1839	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1840
		1841	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		1842
		1843	/* first reschedule or stop timer */
		1844	if (w->repeat)
		1845	{
1734	ev_at (w) += w->repeat;	1846	ev_at (w) += w->repeat;
1735	if (ev_at (w) < mn_now)	1847	if (ev_at (w) < mn_now)
1736	ev_at (w) = mn_now;	1848	ev_at (w) = mn_now;
1737		1849
1738	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1850	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1739		1851
1740	ANHE_at_cache (timers [HEAP0]);	1852	ANHE_at_cache (timers [HEAP0]);
1741	downheap (timers, timercnt, HEAP0);	1853	downheap (timers, timercnt, HEAP0);
		1854	}
		1855	else
		1856	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1857
		1858	EV_FREQUENT_CHECK;
		1859	feed_reverse (EV_A_ (W)w);
1742	}	1860	}
1743	else	1861	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1744	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1745		1862
1746	EV_FREQUENT_CHECK;
1747	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1863	feed_reverse_done (EV_A_ EV_TIMEOUT);
1748	}	1864	}
1749	}	1865	}
1750		1866
1751	#if EV_PERIODIC_ENABLE	1867	#if EV_PERIODIC_ENABLE
1752	void inline_size	1868	/* make periodics pending */
		1869	inline_size void
1753	periodics_reify (EV_P)	1870	periodics_reify (EV_P)
1754	{	1871	{
1755	EV_FREQUENT_CHECK;	1872	EV_FREQUENT_CHECK;
1756		1873
1757	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	1874	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1758	{	1875	{
1759	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	1876	int feed_count = 0;
1760		1877
1761	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	1878	do
1762
1763	/* first reschedule or stop timer */
1764	if (w->reschedule_cb)
1765	{	1879	{
		1880	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1881
		1882	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		1883
		1884	/* first reschedule or stop timer */
		1885	if (w->reschedule_cb)
		1886	{
1766	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1887	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1767		1888
1768	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));	1889	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1769		1890
1770	ANHE_at_cache (periodics [HEAP0]);	1891	ANHE_at_cache (periodics [HEAP0]);
1771	downheap (periodics, periodiccnt, HEAP0);	1892	downheap (periodics, periodiccnt, HEAP0);
		1893	}
		1894	else if (w->interval)
		1895	{
		1896	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1897	/* if next trigger time is not sufficiently in the future, put it there */
		1898	/* this might happen because of floating point inexactness */
		1899	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1900	{
		1901	ev_at (w) += w->interval;
		1902
		1903	/* if interval is unreasonably low we might still have a time in the past */
		1904	/* so correct this. this will make the periodic very inexact, but the user */
		1905	/* has effectively asked to get triggered more often than possible */
		1906	if (ev_at (w) < ev_rt_now)
		1907	ev_at (w) = ev_rt_now;
		1908	}
		1909
		1910	ANHE_at_cache (periodics [HEAP0]);
		1911	downheap (periodics, periodiccnt, HEAP0);
		1912	}
		1913	else
		1914	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1915
		1916	EV_FREQUENT_CHECK;
		1917	feed_reverse (EV_A_ (W)w);
1772	}	1918	}
1773	else if (w->interval)	1919	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1774	{
1775	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1776	/* if next trigger time is not sufficiently in the future, put it there */
1777	/* this might happen because of floating point inexactness */
1778	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1779	{
1780	ev_at (w) += w->interval;
1781		1920
1782	/* if interval is unreasonably low we might still have a time in the past */
1783	/* so correct this. this will make the periodic very inexact, but the user */
1784	/* has effectively asked to get triggered more often than possible */
1785	if (ev_at (w) < ev_rt_now)
1786	ev_at (w) = ev_rt_now;
1787	}
1788
1789	ANHE_at_cache (periodics [HEAP0]);
1790	downheap (periodics, periodiccnt, HEAP0);
1791	}
1792	else
1793	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1794
1795	EV_FREQUENT_CHECK;
1796	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1921	feed_reverse_done (EV_A_ EV_PERIODIC);
1797	}	1922	}
1798	}	1923	}
1799		1924
		1925	/* simply recalculate all periodics */
		1926	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1800	static void noinline	1927	static void noinline
1801	periodics_reschedule (EV_P)	1928	periodics_reschedule (EV_P)
1802	{	1929	{
1803	int i;	1930	int i;
1804		1931
…		…
1817		1944
1818	reheap (periodics, periodiccnt);	1945	reheap (periodics, periodiccnt);
1819	}	1946	}
1820	#endif	1947	#endif
1821		1948
1822	void inline_speed	1949	/* adjust all timers by a given offset */
		1950	static void noinline
		1951	timers_reschedule (EV_P_ ev_tstamp adjust)
		1952	{
		1953	int i;
		1954
		1955	for (i = 0; i < timercnt; ++i)
		1956	{
		1957	ANHE *he = timers + i + HEAP0;
		1958	ANHE_w (*he)->at += adjust;
		1959	ANHE_at_cache (*he);
		1960	}
		1961	}
		1962
		1963	/* fetch new monotonic and realtime times from the kernel */
		1964	/* also detetc if there was a timejump, and act accordingly */
		1965	inline_speed void
1823	time_update (EV_P_ ev_tstamp max_block)	1966	time_update (EV_P_ ev_tstamp max_block)
1824	{	1967	{
1825	int i;
1826
1827	#if EV_USE_MONOTONIC	1968	#if EV_USE_MONOTONIC
1828	if (expect_true (have_monotonic))	1969	if (expect_true (have_monotonic))
1829	{	1970	{
		1971	int i;
1830	ev_tstamp odiff = rtmn_diff;	1972	ev_tstamp odiff = rtmn_diff;
1831		1973
1832	mn_now = get_clock ();	1974	mn_now = get_clock ();
1833		1975
1834	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	1976	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1860	ev_rt_now = ev_time ();	2002	ev_rt_now = ev_time ();
1861	mn_now = get_clock ();	2003	mn_now = get_clock ();
1862	now_floor = mn_now;	2004	now_floor = mn_now;
1863	}	2005	}
1864		2006
		2007	/* no timer adjustment, as the monotonic clock doesn't jump */
		2008	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1865	# if EV_PERIODIC_ENABLE	2009	# if EV_PERIODIC_ENABLE
1866	periodics_reschedule (EV_A);	2010	periodics_reschedule (EV_A);
1867	# endif	2011	# endif
1868	/* no timer adjustment, as the monotonic clock doesn't jump */
1869	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1870	}	2012	}
1871	else	2013	else
1872	#endif	2014	#endif
1873	{	2015	{
1874	ev_rt_now = ev_time ();	2016	ev_rt_now = ev_time ();
1875		2017
1876	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2018	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1877	{	2019	{
		2020	/* adjust timers. this is easy, as the offset is the same for all of them */
		2021	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1878	#if EV_PERIODIC_ENABLE	2022	#if EV_PERIODIC_ENABLE
1879	periodics_reschedule (EV_A);	2023	periodics_reschedule (EV_A);
1880	#endif	2024	#endif
1881	/* adjust timers. this is easy, as the offset is the same for all of them */
1882	for (i = 0; i < timercnt; ++i)
1883	{
1884	ANHE *he = timers + i + HEAP0;
1885	ANHE_w (*he)->at += ev_rt_now - mn_now;
1886	ANHE_at_cache (*he);
1887	}
1888	}	2025	}
1889		2026
1890	mn_now = ev_rt_now;	2027	mn_now = ev_rt_now;
1891	}	2028	}
1892	}	2029	}
1893		2030
1894	void	2031	void
1895	ev_ref (EV_P)
1896	{
1897	++activecnt;
1898	}
1899
1900	void
1901	ev_unref (EV_P)
1902	{
1903	--activecnt;
1904	}
1905
1906	void
1907	ev_now_update (EV_P)
1908	{
1909	time_update (EV_A_ 1e100);
1910	}
1911
1912	static int loop_done;
1913
1914	void
1915	ev_loop (EV_P_ int flags)	2032	ev_loop (EV_P_ int flags)
1916	{	2033	{
		2034	++loop_depth;
		2035
1917	loop_done = EVUNLOOP_CANCEL;	2036	loop_done = EVUNLOOP_CANCEL;
1918		2037
1919	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2038	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1920		2039
1921	do	2040	do
…		…
1948	{	2067	{
1949	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2068	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1950	call_pending (EV_A);	2069	call_pending (EV_A);
1951	}	2070	}
1952		2071
1953	if (expect_false (!activecnt))
1954	break;
1955
1956	/* we might have forked, so reify kernel state if necessary */	2072	/* we might have forked, so reify kernel state if necessary */
1957	if (expect_false (postfork))	2073	if (expect_false (postfork))
1958	loop_fork (EV_A);	2074	loop_fork (EV_A);
1959		2075
1960	/* update fd-related kernel structures */	2076	/* update fd-related kernel structures */
…		…
1965	ev_tstamp waittime = 0.;	2081	ev_tstamp waittime = 0.;
1966	ev_tstamp sleeptime = 0.;	2082	ev_tstamp sleeptime = 0.;
1967		2083
1968	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2084	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1969	{	2085	{
		2086	/* remember old timestamp for io_blocktime calculation */
		2087	ev_tstamp prev_mn_now = mn_now;
		2088
1970	/* update time to cancel out callback processing overhead */	2089	/* update time to cancel out callback processing overhead */
1971	time_update (EV_A_ 1e100);	2090	time_update (EV_A_ 1e100);
1972		2091
1973	waittime = MAX_BLOCKTIME;	2092	waittime = MAX_BLOCKTIME;
1974		2093
…		…
1984	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2103	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1985	if (waittime > to) waittime = to;	2104	if (waittime > to) waittime = to;
1986	}	2105	}
1987	#endif	2106	#endif
1988		2107
		2108	/* don't let timeouts decrease the waittime below timeout_blocktime */
1989	if (expect_false (waittime < timeout_blocktime))	2109	if (expect_false (waittime < timeout_blocktime))
1990	waittime = timeout_blocktime;	2110	waittime = timeout_blocktime;
1991		2111
1992	sleeptime = waittime - backend_fudge;	2112	/* extra check because io_blocktime is commonly 0 */
1993
1994	if (expect_true (sleeptime > io_blocktime))	2113	if (expect_false (io_blocktime))
1995	sleeptime = io_blocktime;
1996
1997	if (sleeptime)
1998	{	2114	{
		2115	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2116
		2117	if (sleeptime > waittime - backend_fudge)
		2118	sleeptime = waittime - backend_fudge;
		2119
		2120	if (expect_true (sleeptime > 0.))
		2121	{
1999	ev_sleep (sleeptime);	2122	ev_sleep (sleeptime);
2000	waittime -= sleeptime;	2123	waittime -= sleeptime;
		2124	}
2001	}	2125	}
2002	}	2126	}
2003		2127
2004	++loop_count;	2128	++loop_count;
2005	backend_poll (EV_A_ waittime);	2129	backend_poll (EV_A_ waittime);
…		…
2031	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2155	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2032	));	2156	));
2033		2157
2034	if (loop_done == EVUNLOOP_ONE)	2158	if (loop_done == EVUNLOOP_ONE)
2035	loop_done = EVUNLOOP_CANCEL;	2159	loop_done = EVUNLOOP_CANCEL;
		2160
		2161	--loop_depth;
2036	}	2162	}
2037		2163
2038	void	2164	void
2039	ev_unloop (EV_P_ int how)	2165	ev_unloop (EV_P_ int how)
2040	{	2166	{
2041	loop_done = how;	2167	loop_done = how;
2042	}	2168	}
2043		2169
		2170	void
		2171	ev_ref (EV_P)
		2172	{
		2173	++activecnt;
		2174	}
		2175
		2176	void
		2177	ev_unref (EV_P)
		2178	{
		2179	--activecnt;
		2180	}
		2181
		2182	void
		2183	ev_now_update (EV_P)
		2184	{
		2185	time_update (EV_A_ 1e100);
		2186	}
		2187
		2188	void
		2189	ev_suspend (EV_P)
		2190	{
		2191	ev_now_update (EV_A);
		2192	}
		2193
		2194	void
		2195	ev_resume (EV_P)
		2196	{
		2197	ev_tstamp mn_prev = mn_now;
		2198
		2199	ev_now_update (EV_A);
		2200	timers_reschedule (EV_A_ mn_now - mn_prev);
		2201	#if EV_PERIODIC_ENABLE
		2202	/* TODO: really do this? */
		2203	periodics_reschedule (EV_A);
		2204	#endif
		2205	}
		2206
2044	/*****************************************************************************/	2207	/*****************************************************************************/
		2208	/* singly-linked list management, used when the expected list length is short */
2045		2209
2046	void inline_size	2210	inline_size void
2047	wlist_add (WL *head, WL elem)	2211	wlist_add (WL *head, WL elem)
2048	{	2212	{
2049	elem->next = *head;	2213	elem->next = *head;
2050	*head = elem;	2214	*head = elem;
2051	}	2215	}
2052		2216
2053	void inline_size	2217	inline_size void
2054	wlist_del (WL *head, WL elem)	2218	wlist_del (WL *head, WL elem)
2055	{	2219	{
2056	while (*head)	2220	while (*head)
2057	{	2221	{
2058	if (*head == elem)	2222	if (*head == elem)
…		…
2063		2227
2064	head = &(*head)->next;	2228	head = &(*head)->next;
2065	}	2229	}
2066	}	2230	}
2067		2231
2068	void inline_speed	2232	/* internal, faster, version of ev_clear_pending */
		2233	inline_speed void
2069	clear_pending (EV_P_ W w)	2234	clear_pending (EV_P_ W w)
2070	{	2235	{
2071	if (w->pending)	2236	if (w->pending)
2072	{	2237	{
2073	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2238	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2074	w->pending = 0;	2239	w->pending = 0;
2075	}	2240	}
2076	}	2241	}
2077		2242
2078	int	2243	int
…		…
2082	int pending = w_->pending;	2247	int pending = w_->pending;
2083		2248
2084	if (expect_true (pending))	2249	if (expect_true (pending))
2085	{	2250	{
2086	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2251	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2252	p->w = (W)&pending_w;
2087	w_->pending = 0;	2253	w_->pending = 0;
2088	p->w = 0;
2089	return p->events;	2254	return p->events;
2090	}	2255	}
2091	else	2256	else
2092	return 0;	2257	return 0;
2093	}	2258	}
2094		2259
2095	void inline_size	2260	inline_size void
2096	pri_adjust (EV_P_ W w)	2261	pri_adjust (EV_P_ W w)
2097	{	2262	{
2098	int pri = w->priority;	2263	int pri = w->priority;
2099	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2264	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2100	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2265	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2101	w->priority = pri;	2266	w->priority = pri;
2102	}	2267	}
2103		2268
2104	void inline_speed	2269	inline_speed void
2105	ev_start (EV_P_ W w, int active)	2270	ev_start (EV_P_ W w, int active)
2106	{	2271	{
2107	pri_adjust (EV_A_ w);	2272	pri_adjust (EV_A_ w);
2108	w->active = active;	2273	w->active = active;
2109	ev_ref (EV_A);	2274	ev_ref (EV_A);
2110	}	2275	}
2111		2276
2112	void inline_size	2277	inline_size void
2113	ev_stop (EV_P_ W w)	2278	ev_stop (EV_P_ W w)
2114	{	2279	{
2115	ev_unref (EV_A);	2280	ev_unref (EV_A);
2116	w->active = 0;	2281	w->active = 0;
2117	}	2282	}
…		…
2124	int fd = w->fd;	2289	int fd = w->fd;
2125		2290
2126	if (expect_false (ev_is_active (w)))	2291	if (expect_false (ev_is_active (w)))
2127	return;	2292	return;
2128		2293
2129	assert (("ev_io_start called with negative fd", fd >= 0));	2294	assert (("libev: ev_io_start called with negative fd", fd >= 0));
2130	assert (("ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE))));	2295	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2131		2296
2132	EV_FREQUENT_CHECK;	2297	EV_FREQUENT_CHECK;
2133		2298
2134	ev_start (EV_A_ (W)w, 1);	2299	ev_start (EV_A_ (W)w, 1);
2135	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2300	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2136	wlist_add (&anfds[fd].head, (WL)w);	2301	wlist_add (&anfds[fd].head, (WL)w);
2137		2302
2138	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2303	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
2139	w->events &= ~EV_IOFDSET;	2304	w->events &= ~EV__IOFDSET;
2140		2305
2141	EV_FREQUENT_CHECK;	2306	EV_FREQUENT_CHECK;
2142	}	2307	}
2143		2308
2144	void noinline	2309	void noinline
…		…
2146	{	2311	{
2147	clear_pending (EV_A_ (W)w);	2312	clear_pending (EV_A_ (W)w);
2148	if (expect_false (!ev_is_active (w)))	2313	if (expect_false (!ev_is_active (w)))
2149	return;	2314	return;
2150		2315
2151	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2316	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2152		2317
2153	EV_FREQUENT_CHECK;	2318	EV_FREQUENT_CHECK;
2154		2319
2155	wlist_del (&anfds[w->fd].head, (WL)w);	2320	wlist_del (&anfds[w->fd].head, (WL)w);
2156	ev_stop (EV_A_ (W)w);	2321	ev_stop (EV_A_ (W)w);
…		…
2166	if (expect_false (ev_is_active (w)))	2331	if (expect_false (ev_is_active (w)))
2167	return;	2332	return;
2168		2333
2169	ev_at (w) += mn_now;	2334	ev_at (w) += mn_now;
2170		2335
2171	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2336	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2172		2337
2173	EV_FREQUENT_CHECK;	2338	EV_FREQUENT_CHECK;
2174		2339
2175	++timercnt;	2340	++timercnt;
2176	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);	2341	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
…		…
2179	ANHE_at_cache (timers [ev_active (w)]);	2344	ANHE_at_cache (timers [ev_active (w)]);
2180	upheap (timers, ev_active (w));	2345	upheap (timers, ev_active (w));
2181		2346
2182	EV_FREQUENT_CHECK;	2347	EV_FREQUENT_CHECK;
2183		2348
2184	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2349	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2185	}	2350	}
2186		2351
2187	void noinline	2352	void noinline
2188	ev_timer_stop (EV_P_ ev_timer *w)	2353	ev_timer_stop (EV_P_ ev_timer *w)
2189	{	2354	{
…		…
2194	EV_FREQUENT_CHECK;	2359	EV_FREQUENT_CHECK;
2195		2360
2196	{	2361	{
2197	int active = ev_active (w);	2362	int active = ev_active (w);
2198		2363
2199	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2364	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2200		2365
2201	--timercnt;	2366	--timercnt;
2202		2367
2203	if (expect_true (active < timercnt + HEAP0))	2368	if (expect_true (active < timercnt + HEAP0))
2204	{	2369	{
…		…
2248		2413
2249	if (w->reschedule_cb)	2414	if (w->reschedule_cb)
2250	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2415	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2251	else if (w->interval)	2416	else if (w->interval)
2252	{	2417	{
2253	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2418	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2254	/* this formula differs from the one in periodic_reify because we do not always round up */	2419	/* this formula differs from the one in periodic_reify because we do not always round up */
2255	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2420	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2256	}	2421	}
2257	else	2422	else
2258	ev_at (w) = w->offset;	2423	ev_at (w) = w->offset;
…		…
2266	ANHE_at_cache (periodics [ev_active (w)]);	2431	ANHE_at_cache (periodics [ev_active (w)]);
2267	upheap (periodics, ev_active (w));	2432	upheap (periodics, ev_active (w));
2268		2433
2269	EV_FREQUENT_CHECK;	2434	EV_FREQUENT_CHECK;
2270		2435
2271	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2436	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2272	}	2437	}
2273		2438
2274	void noinline	2439	void noinline
2275	ev_periodic_stop (EV_P_ ev_periodic *w)	2440	ev_periodic_stop (EV_P_ ev_periodic *w)
2276	{	2441	{
…		…
2281	EV_FREQUENT_CHECK;	2446	EV_FREQUENT_CHECK;
2282		2447
2283	{	2448	{
2284	int active = ev_active (w);	2449	int active = ev_active (w);
2285		2450
2286	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2451	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2287		2452
2288	--periodiccnt;	2453	--periodiccnt;
2289		2454
2290	if (expect_true (active < periodiccnt + HEAP0))	2455	if (expect_true (active < periodiccnt + HEAP0))
2291	{	2456	{
…		…
2314		2479
2315	void noinline	2480	void noinline
2316	ev_signal_start (EV_P_ ev_signal *w)	2481	ev_signal_start (EV_P_ ev_signal *w)
2317	{	2482	{
2318	#if EV_MULTIPLICITY	2483	#if EV_MULTIPLICITY
2319	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2484	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2320	#endif	2485	#endif
2321	if (expect_false (ev_is_active (w)))	2486	if (expect_false (ev_is_active (w)))
2322	return;	2487	return;
2323		2488
2324	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2489	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2325		2490
2326	evpipe_init (EV_A);	2491	evpipe_init (EV_A);
2327		2492
2328	EV_FREQUENT_CHECK;	2493	EV_FREQUENT_CHECK;
2329		2494
…		…
2380		2545
2381	void	2546	void
2382	ev_child_start (EV_P_ ev_child *w)	2547	ev_child_start (EV_P_ ev_child *w)
2383	{	2548	{
2384	#if EV_MULTIPLICITY	2549	#if EV_MULTIPLICITY
2385	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2550	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2386	#endif	2551	#endif
2387	if (expect_false (ev_is_active (w)))	2552	if (expect_false (ev_is_active (w)))
2388	return;	2553	return;
2389		2554
2390	EV_FREQUENT_CHECK;	2555	EV_FREQUENT_CHECK;
…		…
2449	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2614	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2450	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2615	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2451		2616
2452	char *pend = strrchr (path, '/');	2617	char *pend = strrchr (path, '/');
2453		2618
2454	if (!pend)	2619	if (!pend || pend == path)
2455	break; /* whoops, no '/', complain to your admin */	2620	break;
2456		2621
2457	*pend = 0;	2622	*pend = 0;
2458	w->wd = inotify_add_watch (fs_fd, path, mask);	2623	w->wd = inotify_add_watch (fs_fd, path, mask);
2459	}	2624	}
2460	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2625	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2461	}	2626	}
2462	}	2627	}
2463	else	2628
		2629	if (w->wd >= 0)
2464	{	2630	{
2465	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2631	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2466		2632
2467	/* now local changes will be tracked by inotify, but remote changes won't */	2633	/* now local changes will be tracked by inotify, but remote changes won't */
2468	/* unless the filesystem it known to be local, we therefore still poll */	2634	/* unless the filesystem it known to be local, we therefore still poll */
…		…
2518		2684
2519	if (w->wd == wd || wd == -1)	2685	if (w->wd == wd || wd == -1)
2520	{	2686	{
2521	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2687	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2522	{	2688	{
		2689	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2523	w->wd = -1;	2690	w->wd = -1;
2524	infy_add (EV_A_ w); /* re-add, no matter what */	2691	infy_add (EV_A_ w); /* re-add, no matter what */
2525	}	2692	}
2526		2693
2527	stat_timer_cb (EV_A_ &w->timer, 0);	2694	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2540		2707
2541	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2708	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2542	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2709	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2543	}	2710	}
2544		2711
2545	void inline_size	2712	inline_size void
2546	check_2625 (EV_P)	2713	check_2625 (EV_P)
2547	{	2714	{
2548	/* kernels < 2.6.25 are borked	2715	/* kernels < 2.6.25 are borked
2549	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html	2716	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2550	*/	2717	*/
…		…
2563	return;	2730	return;
2564		2731
2565	fs_2625 = 1;	2732	fs_2625 = 1;
2566	}	2733	}
2567		2734
2568	void inline_size	2735	inline_size void
2569	infy_init (EV_P)	2736	infy_init (EV_P)
2570	{	2737	{
2571	if (fs_fd != -2)	2738	if (fs_fd != -2)
2572	return;	2739	return;
2573		2740
…		…
2583	ev_set_priority (&fs_w, EV_MAXPRI);	2750	ev_set_priority (&fs_w, EV_MAXPRI);
2584	ev_io_start (EV_A_ &fs_w);	2751	ev_io_start (EV_A_ &fs_w);
2585	}	2752	}
2586	}	2753	}
2587		2754
2588	void inline_size	2755	inline_size void
2589	infy_fork (EV_P)	2756	infy_fork (EV_P)
2590	{	2757	{
2591	int slot;	2758	int slot;
2592		2759
2593	if (fs_fd < 0)	2760	if (fs_fd < 0)
…		…
2874	static void	3041	static void
2875	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)	3042	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2876	{	3043	{
2877	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));	3044	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2878		3045
		3046	ev_embed_stop (EV_A_ w);
		3047
2879	{	3048	{
2880	struct ev_loop *loop = w->other;	3049	struct ev_loop *loop = w->other;
2881		3050
2882	ev_loop_fork (EV_A);	3051	ev_loop_fork (EV_A);
		3052	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2883	}	3053	}
		3054
		3055	ev_embed_start (EV_A_ w);
2884	}	3056	}
2885		3057
2886	#if 0	3058	#if 0
2887	static void	3059	static void
2888	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3060	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
…		…
2897	if (expect_false (ev_is_active (w)))	3069	if (expect_false (ev_is_active (w)))
2898	return;	3070	return;
2899		3071
2900	{	3072	{
2901	struct ev_loop *loop = w->other;	3073	struct ev_loop *loop = w->other;
2902	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3074	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2903	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3075	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2904	}	3076	}
2905		3077
2906	EV_FREQUENT_CHECK;	3078	EV_FREQUENT_CHECK;
2907		3079
…		…
3090	ev_timer_set (&once->to, timeout, 0.);	3262	ev_timer_set (&once->to, timeout, 0.);
3091	ev_timer_start (EV_A_ &once->to);	3263	ev_timer_start (EV_A_ &once->to);
3092	}	3264	}
3093	}	3265	}
3094		3266
		3267	/*****************************************************************************/
		3268
		3269	#if EV_WALK_ENABLE
		3270	void
		3271	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3272	{
		3273	int i, j;
		3274	ev_watcher_list *wl, *wn;
		3275
		3276	if (types & (EV_IO | EV_EMBED))
		3277	for (i = 0; i < anfdmax; ++i)
		3278	for (wl = anfds [i].head; wl; )
		3279	{
		3280	wn = wl->next;
		3281
		3282	#if EV_EMBED_ENABLE
		3283	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3284	{
		3285	if (types & EV_EMBED)
		3286	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3287	}
		3288	else
		3289	#endif
		3290	#if EV_USE_INOTIFY
		3291	if (ev_cb ((ev_io *)wl) == infy_cb)
		3292	;
		3293	else
		3294	#endif
		3295	if ((ev_io *)wl != &pipe_w)
		3296	if (types & EV_IO)
		3297	cb (EV_A_ EV_IO, wl);
		3298
		3299	wl = wn;
		3300	}
		3301
		3302	if (types & (EV_TIMER | EV_STAT))
		3303	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3304	#if EV_STAT_ENABLE
		3305	/*TODO: timer is not always active*/
		3306	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3307	{
		3308	if (types & EV_STAT)
		3309	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3310	}
		3311	else
		3312	#endif
		3313	if (types & EV_TIMER)
		3314	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3315
		3316	#if EV_PERIODIC_ENABLE
		3317	if (types & EV_PERIODIC)
		3318	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3319	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3320	#endif
		3321
		3322	#if EV_IDLE_ENABLE
		3323	if (types & EV_IDLE)
		3324	for (j = NUMPRI; i--; )
		3325	for (i = idlecnt [j]; i--; )
		3326	cb (EV_A_ EV_IDLE, idles [j][i]);
		3327	#endif
		3328
		3329	#if EV_FORK_ENABLE
		3330	if (types & EV_FORK)
		3331	for (i = forkcnt; i--; )
		3332	if (ev_cb (forks [i]) != embed_fork_cb)
		3333	cb (EV_A_ EV_FORK, forks [i]);
		3334	#endif
		3335
		3336	#if EV_ASYNC_ENABLE
		3337	if (types & EV_ASYNC)
		3338	for (i = asynccnt; i--; )
		3339	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3340	#endif
		3341
		3342	if (types & EV_PREPARE)
		3343	for (i = preparecnt; i--; )
		3344	#if EV_EMBED_ENABLE
		3345	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3346	#endif
		3347	cb (EV_A_ EV_PREPARE, prepares [i]);
		3348
		3349	if (types & EV_CHECK)
		3350	for (i = checkcnt; i--; )
		3351	cb (EV_A_ EV_CHECK, checks [i]);
		3352
		3353	if (types & EV_SIGNAL)
		3354	for (i = 0; i < signalmax; ++i)
		3355	for (wl = signals [i].head; wl; )
		3356	{
		3357	wn = wl->next;
		3358	cb (EV_A_ EV_SIGNAL, wl);
		3359	wl = wn;
		3360	}
		3361
		3362	if (types & EV_CHILD)
		3363	for (i = EV_PID_HASHSIZE; i--; )
		3364	for (wl = childs [i]; wl; )
		3365	{
		3366	wn = wl->next;
		3367	cb (EV_A_ EV_CHILD, wl);
		3368	wl = wn;
		3369	}
		3370	/* EV_STAT 0x00001000 /* stat data changed */
		3371	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3372	}
		3373	#endif
		3374
3095	#if EV_MULTIPLICITY	3375	#if EV_MULTIPLICITY
3096	#include "ev_wrap.h"	3376	#include "ev_wrap.h"
3097	#endif	3377	#endif
3098		3378
3099	#ifdef __cplusplus	3379	#ifdef __cplusplus

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