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Comparing libev/ev.c (file contents):
Revision 1.268 by root, Mon Oct 27 13:39:18 2008 UTC vs.
Revision 1.290 by root, Mon Jun 29 04:41:34 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
…		…
287	# endif	309	# endif
288	#endif	310	#endif
289		311
290	#if EV_USE_INOTIFY	312	#if EV_USE_INOTIFY
291	# include <sys/utsname.h>	313	# include <sys/utsname.h>
		314	# include <sys/statfs.h>
292	# include <sys/inotify.h>	315	# include <sys/inotify.h>
293	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */	316	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
294	# ifndef IN_DONT_FOLLOW	317	# ifndef IN_DONT_FOLLOW
295	# undef EV_USE_INOTIFY	318	# undef EV_USE_INOTIFY
296	# define EV_USE_INOTIFY 0	319	# define EV_USE_INOTIFY 0
297	# endif	320	# endif
298	#endif	321	#endif
299		322
300	#if EV_SELECT_IS_WINSOCKET	323	#if EV_SELECT_IS_WINSOCKET
301	# include <winsock.h>	324	# include <winsock.h>
		325	#endif
		326
		327	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		328	/* which makes programs even slower. might work on other unices, too. */
		329	#if EV_USE_CLOCK_SYSCALL
		330	# include <syscall.h>
		331	# ifdef SYS_clock_gettime
		332	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		333	# undef EV_USE_MONOTONIC
		334	# define EV_USE_MONOTONIC 1
		335	# else
		336	# undef EV_USE_CLOCK_SYSCALL
		337	# define EV_USE_CLOCK_SYSCALL 0
		338	# endif
302	#endif	339	#endif
303		340
304	#if EV_USE_EVENTFD	341	#if EV_USE_EVENTFD
305	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	342	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
306	# include <stdint.h>	343	# include <stdint.h>
…		…
367	typedef ev_watcher_time *WT;	404	typedef ev_watcher_time *WT;
368		405
369	#define ev_active(w) ((W)(w))->active	406	#define ev_active(w) ((W)(w))->active
370	#define ev_at(w) ((WT)(w))->at	407	#define ev_at(w) ((WT)(w))->at
371		408
372	#if EV_USE_MONOTONIC	409	#if EV_USE_REALTIME
373	/* 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 */
374	/* 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
375	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? */
376	#endif	417	#endif
377		418
378	#ifdef _WIN32	419	#ifdef _WIN32
379	# include "ev_win32.c"	420	# include "ev_win32.c"
…		…
388	{	429	{
389	syserr_cb = cb;	430	syserr_cb = cb;
390	}	431	}
391		432
392	static void noinline	433	static void noinline
393	syserr (const char *msg)	434	ev_syserr (const char *msg)
394	{	435	{
395	if (!msg)	436	if (!msg)
396	msg = "(libev) system error";	437	msg = "(libev) system error";
397		438
398	if (syserr_cb)	439	if (syserr_cb)
…		…
444	#define ev_malloc(size) ev_realloc (0, (size))	485	#define ev_malloc(size) ev_realloc (0, (size))
445	#define ev_free(ptr) ev_realloc ((ptr), 0)	486	#define ev_free(ptr) ev_realloc ((ptr), 0)
446		487
447	/*****************************************************************************/	488	/*****************************************************************************/
448		489
		490	/* file descriptor info structure */
449	typedef struct	491	typedef struct
450	{	492	{
451	WL head;	493	WL head;
452	unsigned char events;	494	unsigned char events; /* the events watched for */
453	unsigned char reify;	495	unsigned char reify; /* flag set when this ANFD needs reification */
454	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 */
		497	unsigned char unused;
		498	#if EV_USE_EPOLL
455	unsigned char egen; /* generation counter to counter epoll bugs */	499	unsigned int egen; /* generation counter to counter epoll bugs */
		500	#endif
456	#if EV_SELECT_IS_WINSOCKET	501	#if EV_SELECT_IS_WINSOCKET
457	SOCKET handle;	502	SOCKET handle;
458	#endif	503	#endif
459	} ANFD;	504	} ANFD;
460		505
		506	/* stores the pending event set for a given watcher */
461	typedef struct	507	typedef struct
462	{	508	{
463	W w;	509	W w;
464	int events;	510	int events; /* the pending event set for the given watcher */
465	} ANPENDING;	511	} ANPENDING;
466		512
467	#if EV_USE_INOTIFY	513	#if EV_USE_INOTIFY
468	/* hash table entry per inotify-id */	514	/* hash table entry per inotify-id */
469	typedef struct	515	typedef struct
…		…
472	} ANFS;	518	} ANFS;
473	#endif	519	#endif
474		520
475	/* Heap Entry */	521	/* Heap Entry */
476	#if EV_HEAP_CACHE_AT	522	#if EV_HEAP_CACHE_AT
		523	/* a heap element */
477	typedef struct {	524	typedef struct {
478	ev_tstamp at;	525	ev_tstamp at;
479	WT w;	526	WT w;
480	} ANHE;	527	} ANHE;
481		528
482	#define ANHE_w(he) (he).w /* access watcher, read-write */	529	#define ANHE_w(he) (he).w /* access watcher, read-write */
483	#define ANHE_at(he) (he).at /* access cached at, read-only */	530	#define ANHE_at(he) (he).at /* access cached at, read-only */
484	#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 */
485	#else	532	#else
		533	/* a heap element */
486	typedef WT ANHE;	534	typedef WT ANHE;
487		535
488	#define ANHE_w(he) (he)	536	#define ANHE_w(he) (he)
489	#define ANHE_at(he) (he)->at	537	#define ANHE_at(he) (he)->at
490	#define ANHE_at_cache(he)	538	#define ANHE_at_cache(he)
…		…
520		568
521	ev_tstamp	569	ev_tstamp
522	ev_time (void)	570	ev_time (void)
523	{	571	{
524	#if EV_USE_REALTIME	572	#if EV_USE_REALTIME
		573	if (expect_true (have_realtime))
		574	{
525	struct timespec ts;	575	struct timespec ts;
526	clock_gettime (CLOCK_REALTIME, &ts);	576	clock_gettime (CLOCK_REALTIME, &ts);
527	return ts.tv_sec + ts.tv_nsec * 1e-9;	577	return ts.tv_sec + ts.tv_nsec * 1e-9;
528	#else	578	}
		579	#endif
		580
529	struct timeval tv;	581	struct timeval tv;
530	gettimeofday (&tv, 0);	582	gettimeofday (&tv, 0);
531	return tv.tv_sec + tv.tv_usec * 1e-6;	583	return tv.tv_sec + tv.tv_usec * 1e-6;
532	#endif
533	}	584	}
534		585
535	ev_tstamp inline_size	586	inline_size ev_tstamp
536	get_clock (void)	587	get_clock (void)
537	{	588	{
538	#if EV_USE_MONOTONIC	589	#if EV_USE_MONOTONIC
539	if (expect_true (have_monotonic))	590	if (expect_true (have_monotonic))
540	{	591	{
…		…
585		636
586	/*****************************************************************************/	637	/*****************************************************************************/
587		638
588	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	639	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
589		640
590	int inline_size	641	/* find a suitable new size for the given array, */
		642	/* hopefully by rounding to a ncie-to-malloc size */
		643	inline_size int
591	array_nextsize (int elem, int cur, int cnt)	644	array_nextsize (int elem, int cur, int cnt)
592	{	645	{
593	int ncur = cur + 1;	646	int ncur = cur + 1;
594		647
595	do	648	do
…		…
636	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	689	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
637	}	690	}
638	#endif	691	#endif
639		692
640	#define array_free(stem, idx) \	693	#define array_free(stem, idx) \
641	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	694	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
642		695
643	/*****************************************************************************/	696	/*****************************************************************************/
		697
		698	/* dummy callback for pending events */
		699	static void noinline
		700	pendingcb (EV_P_ ev_prepare *w, int revents)
		701	{
		702	}
644		703
645	void noinline	704	void noinline
646	ev_feed_event (EV_P_ void *w, int revents)	705	ev_feed_event (EV_P_ void *w, int revents)
647	{	706	{
648	W w_ = (W)w;	707	W w_ = (W)w;
…		…
657	pendings [pri][w_->pending - 1].w = w_;	716	pendings [pri][w_->pending - 1].w = w_;
658	pendings [pri][w_->pending - 1].events = revents;	717	pendings [pri][w_->pending - 1].events = revents;
659	}	718	}
660	}	719	}
661		720
662	void inline_speed	721	inline_speed void
		722	feed_reverse (EV_P_ W w)
		723	{
		724	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		725	rfeeds [rfeedcnt++] = w;
		726	}
		727
		728	inline_size void
		729	feed_reverse_done (EV_P_ int revents)
		730	{
		731	do
		732	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		733	while (rfeedcnt);
		734	}
		735
		736	inline_speed void
663	queue_events (EV_P_ W *events, int eventcnt, int type)	737	queue_events (EV_P_ W *events, int eventcnt, int type)
664	{	738	{
665	int i;	739	int i;
666		740
667	for (i = 0; i < eventcnt; ++i)	741	for (i = 0; i < eventcnt; ++i)
668	ev_feed_event (EV_A_ events [i], type);	742	ev_feed_event (EV_A_ events [i], type);
669	}	743	}
670		744
671	/*****************************************************************************/	745	/*****************************************************************************/
672		746
673	void inline_speed	747	inline_speed void
674	fd_event (EV_P_ int fd, int revents)	748	fd_event (EV_P_ int fd, int revents)
675	{	749	{
676	ANFD *anfd = anfds + fd;	750	ANFD *anfd = anfds + fd;
677	ev_io *w;	751	ev_io *w;
678		752
…		…
690	{	764	{
691	if (fd >= 0 && fd < anfdmax)	765	if (fd >= 0 && fd < anfdmax)
692	fd_event (EV_A_ fd, revents);	766	fd_event (EV_A_ fd, revents);
693	}	767	}
694		768
695	void inline_size	769	/* make sure the external fd watch events are in-sync */
		770	/* with the kernel/libev internal state */
		771	inline_size void
696	fd_reify (EV_P)	772	fd_reify (EV_P)
697	{	773	{
698	int i;	774	int i;
699		775
700	for (i = 0; i < fdchangecnt; ++i)	776	for (i = 0; i < fdchangecnt; ++i)
…		…
715	#ifdef EV_FD_TO_WIN32_HANDLE	791	#ifdef EV_FD_TO_WIN32_HANDLE
716	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	792	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
717	#else	793	#else
718	anfd->handle = _get_osfhandle (fd);	794	anfd->handle = _get_osfhandle (fd);
719	#endif	795	#endif
720	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	796	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
721	}	797	}
722	#endif	798	#endif
723		799
724	{	800	{
725	unsigned char o_events = anfd->events;	801	unsigned char o_events = anfd->events;
726	unsigned char o_reify = anfd->reify;	802	unsigned char o_reify = anfd->reify;
727		803
728	anfd->reify = 0;	804	anfd->reify = 0;
729	anfd->events = events;	805	anfd->events = events;
730		806
731	if (o_events != events || o_reify & EV_IOFDSET)	807	if (o_events != events || o_reify & EV__IOFDSET)
732	backend_modify (EV_A_ fd, o_events, events);	808	backend_modify (EV_A_ fd, o_events, events);
733	}	809	}
734	}	810	}
735		811
736	fdchangecnt = 0;	812	fdchangecnt = 0;
737	}	813	}
738		814
739	void inline_size	815	/* something about the given fd changed */
		816	inline_size void
740	fd_change (EV_P_ int fd, int flags)	817	fd_change (EV_P_ int fd, int flags)
741	{	818	{
742	unsigned char reify = anfds [fd].reify;	819	unsigned char reify = anfds [fd].reify;
743	anfds [fd].reify |= flags;	820	anfds [fd].reify |= flags;
744		821
…		…
748	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	825	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
749	fdchanges [fdchangecnt - 1] = fd;	826	fdchanges [fdchangecnt - 1] = fd;
750	}	827	}
751	}	828	}
752		829
753	void inline_speed	830	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		831	inline_speed void
754	fd_kill (EV_P_ int fd)	832	fd_kill (EV_P_ int fd)
755	{	833	{
756	ev_io *w;	834	ev_io *w;
757		835
758	while ((w = (ev_io *)anfds [fd].head))	836	while ((w = (ev_io *)anfds [fd].head))
…		…
760	ev_io_stop (EV_A_ w);	838	ev_io_stop (EV_A_ w);
761	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	839	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
762	}	840	}
763	}	841	}
764		842
765	int inline_size	843	/* check whether the given fd is atcually valid, for error recovery */
		844	inline_size int
766	fd_valid (int fd)	845	fd_valid (int fd)
767	{	846	{
768	#ifdef _WIN32	847	#ifdef _WIN32
769	return _get_osfhandle (fd) != -1;	848	return _get_osfhandle (fd) != -1;
770	#else	849	#else
…		…
807	for (fd = 0; fd < anfdmax; ++fd)	886	for (fd = 0; fd < anfdmax; ++fd)
808	if (anfds [fd].events)	887	if (anfds [fd].events)
809	{	888	{
810	anfds [fd].events = 0;	889	anfds [fd].events = 0;
811	anfds [fd].emask = 0;	890	anfds [fd].emask = 0;
812	fd_change (EV_A_ fd, EV_IOFDSET | 1);	891	fd_change (EV_A_ fd, EV__IOFDSET | 1);
813	}	892	}
814	}	893	}
815		894
816	/*****************************************************************************/	895	/*****************************************************************************/
817		896
…		…
833	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	912	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
834	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)	913	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
835	#define UPHEAP_DONE(p,k) ((p) == (k))	914	#define UPHEAP_DONE(p,k) ((p) == (k))
836		915
837	/* away from the root */	916	/* away from the root */
838	void inline_speed	917	inline_speed void
839	downheap (ANHE *heap, int N, int k)	918	downheap (ANHE *heap, int N, int k)
840	{	919	{
841	ANHE he = heap [k];	920	ANHE he = heap [k];
842	ANHE *E = heap + N + HEAP0;	921	ANHE *E = heap + N + HEAP0;
843		922
…		…
883	#define HEAP0 1	962	#define HEAP0 1
884	#define HPARENT(k) ((k) >> 1)	963	#define HPARENT(k) ((k) >> 1)
885	#define UPHEAP_DONE(p,k) (!(p))	964	#define UPHEAP_DONE(p,k) (!(p))
886		965
887	/* away from the root */	966	/* away from the root */
888	void inline_speed	967	inline_speed void
889	downheap (ANHE *heap, int N, int k)	968	downheap (ANHE *heap, int N, int k)
890	{	969	{
891	ANHE he = heap [k];	970	ANHE he = heap [k];
892		971
893	for (;;)	972	for (;;)
…		…
913	ev_active (ANHE_w (he)) = k;	992	ev_active (ANHE_w (he)) = k;
914	}	993	}
915	#endif	994	#endif
916		995
917	/* towards the root */	996	/* towards the root */
918	void inline_speed	997	inline_speed void
919	upheap (ANHE *heap, int k)	998	upheap (ANHE *heap, int k)
920	{	999	{
921	ANHE he = heap [k];	1000	ANHE he = heap [k];
922		1001
923	for (;;)	1002	for (;;)
…		…
934		1013
935	heap [k] = he;	1014	heap [k] = he;
936	ev_active (ANHE_w (he)) = k;	1015	ev_active (ANHE_w (he)) = k;
937	}	1016	}
938		1017
939	void inline_size	1018	/* move an element suitably so it is in a correct place */
		1019	inline_size void
940	adjustheap (ANHE *heap, int N, int k)	1020	adjustheap (ANHE *heap, int N, int k)
941	{	1021	{
942	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1022	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
943	upheap (heap, k);	1023	upheap (heap, k);
944	else	1024	else
945	downheap (heap, N, k);	1025	downheap (heap, N, k);
946	}	1026	}
947		1027
948	/* rebuild the heap: this function is used only once and executed rarely */	1028	/* rebuild the heap: this function is used only once and executed rarely */
949	void inline_size	1029	inline_size void
950	reheap (ANHE *heap, int N)	1030	reheap (ANHE *heap, int N)
951	{	1031	{
952	int i;	1032	int i;
953		1033
954	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */	1034	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
…		…
957	upheap (heap, i + HEAP0);	1037	upheap (heap, i + HEAP0);
958	}	1038	}
959		1039
960	/*****************************************************************************/	1040	/*****************************************************************************/
961		1041
		1042	/* associate signal watchers to a signal signal */
962	typedef struct	1043	typedef struct
963	{	1044	{
964	WL head;	1045	WL head;
965	EV_ATOMIC_T gotsig;	1046	EV_ATOMIC_T gotsig;
966	} ANSIG;	1047	} ANSIG;
…		…
970		1051
971	static EV_ATOMIC_T gotsig;	1052	static EV_ATOMIC_T gotsig;
972		1053
973	/*****************************************************************************/	1054	/*****************************************************************************/
974		1055
975	void inline_speed	1056	/* used to prepare libev internal fd's */
		1057	/* this is not fork-safe */
		1058	inline_speed void
976	fd_intern (int fd)	1059	fd_intern (int fd)
977	{	1060	{
978	#ifdef _WIN32	1061	#ifdef _WIN32
979	unsigned long arg = 1;	1062	unsigned long arg = 1;
980	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1063	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
985	}	1068	}
986		1069
987	static void noinline	1070	static void noinline
988	evpipe_init (EV_P)	1071	evpipe_init (EV_P)
989	{	1072	{
990	if (!ev_is_active (&pipeev))	1073	if (!ev_is_active (&pipe_w))
991	{	1074	{
992	#if EV_USE_EVENTFD	1075	#if EV_USE_EVENTFD
993	if ((evfd = eventfd (0, 0)) >= 0)	1076	if ((evfd = eventfd (0, 0)) >= 0)
994	{	1077	{
995	evpipe [0] = -1;	1078	evpipe [0] = -1;
996	fd_intern (evfd);	1079	fd_intern (evfd);
997	ev_io_set (&pipeev, evfd, EV_READ);	1080	ev_io_set (&pipe_w, evfd, EV_READ);
998	}	1081	}
999	else	1082	else
1000	#endif	1083	#endif
1001	{	1084	{
1002	while (pipe (evpipe))	1085	while (pipe (evpipe))
1003	syserr ("(libev) error creating signal/async pipe");	1086	ev_syserr ("(libev) error creating signal/async pipe");
1004		1087
1005	fd_intern (evpipe [0]);	1088	fd_intern (evpipe [0]);
1006	fd_intern (evpipe [1]);	1089	fd_intern (evpipe [1]);
1007	ev_io_set (&pipeev, evpipe [0], EV_READ);	1090	ev_io_set (&pipe_w, evpipe [0], EV_READ);
1008	}	1091	}
1009		1092
1010	ev_io_start (EV_A_ &pipeev);	1093	ev_io_start (EV_A_ &pipe_w);
1011	ev_unref (EV_A); /* watcher should not keep loop alive */	1094	ev_unref (EV_A); /* watcher should not keep loop alive */
1012	}	1095	}
1013	}	1096	}
1014		1097
1015	void inline_size	1098	inline_size void
1016	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1099	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1017	{	1100	{
1018	if (!*flag)	1101	if (!*flag)
1019	{	1102	{
1020	int old_errno = errno; /* save errno because write might clobber it */	1103	int old_errno = errno; /* save errno because write might clobber it */
…		…
1033		1116
1034	errno = old_errno;	1117	errno = old_errno;
1035	}	1118	}
1036	}	1119	}
1037		1120
		1121	/* called whenever the libev signal pipe */
		1122	/* got some events (signal, async) */
1038	static void	1123	static void
1039	pipecb (EV_P_ ev_io *iow, int revents)	1124	pipecb (EV_P_ ev_io *iow, int revents)
1040	{	1125	{
1041	#if EV_USE_EVENTFD	1126	#if EV_USE_EVENTFD
1042	if (evfd >= 0)	1127	if (evfd >= 0)
…		…
1098	ev_feed_signal_event (EV_P_ int signum)	1183	ev_feed_signal_event (EV_P_ int signum)
1099	{	1184	{
1100	WL w;	1185	WL w;
1101		1186
1102	#if EV_MULTIPLICITY	1187	#if EV_MULTIPLICITY
1103	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1188	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1104	#endif	1189	#endif
1105		1190
1106	--signum;	1191	--signum;
1107		1192
1108	if (signum < 0 || signum >= signalmax)	1193	if (signum < 0 || signum >= signalmax)
…		…
1124		1209
1125	#ifndef WIFCONTINUED	1210	#ifndef WIFCONTINUED
1126	# define WIFCONTINUED(status) 0	1211	# define WIFCONTINUED(status) 0
1127	#endif	1212	#endif
1128		1213
1129	void inline_speed	1214	/* handle a single child status event */
		1215	inline_speed void
1130	child_reap (EV_P_ int chain, int pid, int status)	1216	child_reap (EV_P_ int chain, int pid, int status)
1131	{	1217	{
1132	ev_child *w;	1218	ev_child *w;
1133	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1219	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1134		1220
…		…
1147		1233
1148	#ifndef WCONTINUED	1234	#ifndef WCONTINUED
1149	# define WCONTINUED 0	1235	# define WCONTINUED 0
1150	#endif	1236	#endif
1151		1237
		1238	/* called on sigchld etc., calls waitpid */
1152	static void	1239	static void
1153	childcb (EV_P_ ev_signal *sw, int revents)	1240	childcb (EV_P_ ev_signal *sw, int revents)
1154	{	1241	{
1155	int pid, status;	1242	int pid, status;
1156		1243
…		…
1237	/* kqueue is borked on everything but netbsd apparently */	1324	/* kqueue is borked on everything but netbsd apparently */
1238	/* it usually doesn't work correctly on anything but sockets and pipes */	1325	/* it usually doesn't work correctly on anything but sockets and pipes */
1239	flags &= ~EVBACKEND_KQUEUE;	1326	flags &= ~EVBACKEND_KQUEUE;
1240	#endif	1327	#endif
1241	#ifdef __APPLE__	1328	#ifdef __APPLE__
1242	// flags &= ~EVBACKEND_KQUEUE; for documentation	1329	/* only select works correctly on that "unix-certified" platform */
1243	flags &= ~EVBACKEND_POLL;	1330	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1331	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1244	#endif	1332	#endif
1245		1333
1246	return flags;	1334	return flags;
1247	}	1335	}
1248		1336
…		…
1280	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1368	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1281	{	1369	{
1282	timeout_blocktime = interval;	1370	timeout_blocktime = interval;
1283	}	1371	}
1284		1372
		1373	/* initialise a loop structure, must be zero-initialised */
1285	static void noinline	1374	static void noinline
1286	loop_init (EV_P_ unsigned int flags)	1375	loop_init (EV_P_ unsigned int flags)
1287	{	1376	{
1288	if (!backend)	1377	if (!backend)
1289	{	1378	{
		1379	#if EV_USE_REALTIME
		1380	if (!have_realtime)
		1381	{
		1382	struct timespec ts;
		1383
		1384	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1385	have_realtime = 1;
		1386	}
		1387	#endif
		1388
1290	#if EV_USE_MONOTONIC	1389	#if EV_USE_MONOTONIC
		1390	if (!have_monotonic)
1291	{	1391	{
1292	struct timespec ts;	1392	struct timespec ts;
		1393
1293	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1394	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1294	have_monotonic = 1;	1395	have_monotonic = 1;
1295	}	1396	}
1296	#endif	1397	#endif
1297		1398
1298	ev_rt_now = ev_time ();	1399	ev_rt_now = ev_time ();
1299	mn_now = get_clock ();	1400	mn_now = get_clock ();
1300	now_floor = mn_now;	1401	now_floor = mn_now;
…		…
1337	#endif	1438	#endif
1338	#if EV_USE_SELECT	1439	#if EV_USE_SELECT
1339	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1440	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1340	#endif	1441	#endif
1341		1442
		1443	ev_prepare_init (&pending_w, pendingcb);
		1444
1342	ev_init (&pipeev, pipecb);	1445	ev_init (&pipe_w, pipecb);
1343	ev_set_priority (&pipeev, EV_MAXPRI);	1446	ev_set_priority (&pipe_w, EV_MAXPRI);
1344	}	1447	}
1345	}	1448	}
1346		1449
		1450	/* free up a loop structure */
1347	static void noinline	1451	static void noinline
1348	loop_destroy (EV_P)	1452	loop_destroy (EV_P)
1349	{	1453	{
1350	int i;	1454	int i;
1351		1455
1352	if (ev_is_active (&pipeev))	1456	if (ev_is_active (&pipe_w))
1353	{	1457	{
1354	ev_ref (EV_A); /* signal watcher */	1458	ev_ref (EV_A); /* signal watcher */
1355	ev_io_stop (EV_A_ &pipeev);	1459	ev_io_stop (EV_A_ &pipe_w);
1356		1460
1357	#if EV_USE_EVENTFD	1461	#if EV_USE_EVENTFD
1358	if (evfd >= 0)	1462	if (evfd >= 0)
1359	close (evfd);	1463	close (evfd);
1360	#endif	1464	#endif
…		…
1399	}	1503	}
1400		1504
1401	ev_free (anfds); anfdmax = 0;	1505	ev_free (anfds); anfdmax = 0;
1402		1506
1403	/* have to use the microsoft-never-gets-it-right macro */	1507	/* have to use the microsoft-never-gets-it-right macro */
		1508	array_free (rfeed, EMPTY);
1404	array_free (fdchange, EMPTY);	1509	array_free (fdchange, EMPTY);
1405	array_free (timer, EMPTY);	1510	array_free (timer, EMPTY);
1406	#if EV_PERIODIC_ENABLE	1511	#if EV_PERIODIC_ENABLE
1407	array_free (periodic, EMPTY);	1512	array_free (periodic, EMPTY);
1408	#endif	1513	#endif
…		…
1417		1522
1418	backend = 0;	1523	backend = 0;
1419	}	1524	}
1420		1525
1421	#if EV_USE_INOTIFY	1526	#if EV_USE_INOTIFY
1422	void inline_size infy_fork (EV_P);	1527	inline_size void infy_fork (EV_P);
1423	#endif	1528	#endif
1424		1529
1425	void inline_size	1530	inline_size void
1426	loop_fork (EV_P)	1531	loop_fork (EV_P)
1427	{	1532	{
1428	#if EV_USE_PORT	1533	#if EV_USE_PORT
1429	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1534	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1430	#endif	1535	#endif
…		…
1436	#endif	1541	#endif
1437	#if EV_USE_INOTIFY	1542	#if EV_USE_INOTIFY
1438	infy_fork (EV_A);	1543	infy_fork (EV_A);
1439	#endif	1544	#endif
1440		1545
1441	if (ev_is_active (&pipeev))	1546	if (ev_is_active (&pipe_w))
1442	{	1547	{
1443	/* this "locks" the handlers against writing to the pipe */	1548	/* this "locks" the handlers against writing to the pipe */
1444	/* while we modify the fd vars */	1549	/* while we modify the fd vars */
1445	gotsig = 1;	1550	gotsig = 1;
1446	#if EV_ASYNC_ENABLE	1551	#if EV_ASYNC_ENABLE
1447	gotasync = 1;	1552	gotasync = 1;
1448	#endif	1553	#endif
1449		1554
1450	ev_ref (EV_A);	1555	ev_ref (EV_A);
1451	ev_io_stop (EV_A_ &pipeev);	1556	ev_io_stop (EV_A_ &pipe_w);
1452		1557
1453	#if EV_USE_EVENTFD	1558	#if EV_USE_EVENTFD
1454	if (evfd >= 0)	1559	if (evfd >= 0)
1455	close (evfd);	1560	close (evfd);
1456	#endif	1561	#endif
…		…
1461	close (evpipe [1]);	1566	close (evpipe [1]);
1462	}	1567	}
1463		1568
1464	evpipe_init (EV_A);	1569	evpipe_init (EV_A);
1465	/* now iterate over everything, in case we missed something */	1570	/* now iterate over everything, in case we missed something */
1466	pipecb (EV_A_ &pipeev, EV_READ);	1571	pipecb (EV_A_ &pipe_w, EV_READ);
1467	}	1572	}
1468		1573
1469	postfork = 0;	1574	postfork = 0;
1470	}	1575	}
1471		1576
…		…
1501		1606
1502	#if EV_VERIFY	1607	#if EV_VERIFY
1503	static void noinline	1608	static void noinline
1504	verify_watcher (EV_P_ W w)	1609	verify_watcher (EV_P_ W w)
1505	{	1610	{
1506	assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));	1611	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1507		1612
1508	if (w->pending)	1613	if (w->pending)
1509	assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));	1614	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1510	}	1615	}
1511		1616
1512	static void noinline	1617	static void noinline
1513	verify_heap (EV_P_ ANHE *heap, int N)	1618	verify_heap (EV_P_ ANHE *heap, int N)
1514	{	1619	{
1515	int i;	1620	int i;
1516		1621
1517	for (i = HEAP0; i < N + HEAP0; ++i)	1622	for (i = HEAP0; i < N + HEAP0; ++i)
1518	{	1623	{
1519	assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));	1624	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1520	assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));	1625	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1521	assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));	1626	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1522		1627
1523	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));	1628	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1524	}	1629	}
1525	}	1630	}
1526		1631
1527	static void noinline	1632	static void noinline
1528	array_verify (EV_P_ W *ws, int cnt)	1633	array_verify (EV_P_ W *ws, int cnt)
1529	{	1634	{
1530	while (cnt--)	1635	while (cnt--)
1531	{	1636	{
1532	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));	1637	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1533	verify_watcher (EV_A_ ws [cnt]);	1638	verify_watcher (EV_A_ ws [cnt]);
1534	}	1639	}
1535	}	1640	}
1536	#endif	1641	#endif
1537		1642
…		…
1544		1649
1545	assert (activecnt >= -1);	1650	assert (activecnt >= -1);
1546		1651
1547	assert (fdchangemax >= fdchangecnt);	1652	assert (fdchangemax >= fdchangecnt);
1548	for (i = 0; i < fdchangecnt; ++i)	1653	for (i = 0; i < fdchangecnt; ++i)
1549	assert (("negative fd in fdchanges", fdchanges [i] >= 0));	1654	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1550		1655
1551	assert (anfdmax >= 0);	1656	assert (anfdmax >= 0);
1552	for (i = 0; i < anfdmax; ++i)	1657	for (i = 0; i < anfdmax; ++i)
1553	for (w = anfds [i].head; w; w = w->next)	1658	for (w = anfds [i].head; w; w = w->next)
1554	{	1659	{
1555	verify_watcher (EV_A_ (W)w);	1660	verify_watcher (EV_A_ (W)w);
1556	assert (("inactive fd watcher on anfd list", ev_active (w) == 1));	1661	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1557	assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));	1662	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1558	}	1663	}
1559		1664
1560	assert (timermax >= timercnt);	1665	assert (timermax >= timercnt);
1561	verify_heap (EV_A_ timers, timercnt);	1666	verify_heap (EV_A_ timers, timercnt);
1562		1667
…		…
1656	{	1761	{
1657	#if EV_MULTIPLICITY	1762	#if EV_MULTIPLICITY
1658	struct ev_loop *loop = ev_default_loop_ptr;	1763	struct ev_loop *loop = ev_default_loop_ptr;
1659	#endif	1764	#endif
1660		1765
1661	if (backend)
1662	postfork = 1; /* must be in line with ev_loop_fork */	1766	postfork = 1; /* must be in line with ev_loop_fork */
1663	}	1767	}
1664		1768
1665	/*****************************************************************************/	1769	/*****************************************************************************/
1666		1770
1667	void	1771	void
1668	ev_invoke (EV_P_ void *w, int revents)	1772	ev_invoke (EV_P_ void *w, int revents)
1669	{	1773	{
1670	EV_CB_INVOKE ((W)w, revents);	1774	EV_CB_INVOKE ((W)w, revents);
1671	}	1775	}
1672		1776
1673	void inline_speed	1777	inline_speed void
1674	call_pending (EV_P)	1778	call_pending (EV_P)
1675	{	1779	{
1676	int pri;	1780	int pri;
1677		1781
1678	for (pri = NUMPRI; pri--; )	1782	for (pri = NUMPRI; pri--; )
1679	while (pendingcnt [pri])	1783	while (pendingcnt [pri])
1680	{	1784	{
1681	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1785	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1682		1786
1683	if (expect_true (p->w))
1684	{
1685	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1787	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1788	/* ^ this is no longer true, as pending_w could be here */
1686		1789
1687	p->w->pending = 0;	1790	p->w->pending = 0;
1688	EV_CB_INVOKE (p->w, p->events);	1791	EV_CB_INVOKE (p->w, p->events);
1689	EV_FREQUENT_CHECK;	1792	EV_FREQUENT_CHECK;
1690	}
1691	}	1793	}
1692	}	1794	}
1693		1795
1694	#if EV_IDLE_ENABLE	1796	#if EV_IDLE_ENABLE
1695	void inline_size	1797	/* make idle watchers pending. this handles the "call-idle */
		1798	/* only when higher priorities are idle" logic */
		1799	inline_size void
1696	idle_reify (EV_P)	1800	idle_reify (EV_P)
1697	{	1801	{
1698	if (expect_false (idleall))	1802	if (expect_false (idleall))
1699	{	1803	{
1700	int pri;	1804	int pri;
…		…
1712	}	1816	}
1713	}	1817	}
1714	}	1818	}
1715	#endif	1819	#endif
1716		1820
1717	void inline_size	1821	/* make timers pending */
		1822	inline_size void
1718	timers_reify (EV_P)	1823	timers_reify (EV_P)
1719	{	1824	{
1720	EV_FREQUENT_CHECK;	1825	EV_FREQUENT_CHECK;
1721		1826
1722	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	1827	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1723	{	1828	{
1724	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	1829	do
1725
1726	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1727
1728	/* first reschedule or stop timer */
1729	if (w->repeat)
1730	{	1830	{
		1831	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1832
		1833	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		1834
		1835	/* first reschedule or stop timer */
		1836	if (w->repeat)
		1837	{
1731	ev_at (w) += w->repeat;	1838	ev_at (w) += w->repeat;
1732	if (ev_at (w) < mn_now)	1839	if (ev_at (w) < mn_now)
1733	ev_at (w) = mn_now;	1840	ev_at (w) = mn_now;
1734		1841
1735	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1842	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1736		1843
1737	ANHE_at_cache (timers [HEAP0]);	1844	ANHE_at_cache (timers [HEAP0]);
1738	downheap (timers, timercnt, HEAP0);	1845	downheap (timers, timercnt, HEAP0);
		1846	}
		1847	else
		1848	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1849
		1850	EV_FREQUENT_CHECK;
		1851	feed_reverse (EV_A_ (W)w);
1739	}	1852	}
1740	else	1853	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1741	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1742		1854
1743	EV_FREQUENT_CHECK;
1744	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1855	feed_reverse_done (EV_A_ EV_TIMEOUT);
1745	}	1856	}
1746	}	1857	}
1747		1858
1748	#if EV_PERIODIC_ENABLE	1859	#if EV_PERIODIC_ENABLE
1749	void inline_size	1860	/* make periodics pending */
		1861	inline_size void
1750	periodics_reify (EV_P)	1862	periodics_reify (EV_P)
1751	{	1863	{
1752	EV_FREQUENT_CHECK;	1864	EV_FREQUENT_CHECK;
1753		1865
1754	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	1866	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1755	{	1867	{
1756	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	1868	int feed_count = 0;
1757		1869
1758	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	1870	do
1759
1760	/* first reschedule or stop timer */
1761	if (w->reschedule_cb)
1762	{	1871	{
		1872	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1873
		1874	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		1875
		1876	/* first reschedule or stop timer */
		1877	if (w->reschedule_cb)
		1878	{
1763	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1879	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1764		1880
1765	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));	1881	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1766		1882
1767	ANHE_at_cache (periodics [HEAP0]);	1883	ANHE_at_cache (periodics [HEAP0]);
1768	downheap (periodics, periodiccnt, HEAP0);	1884	downheap (periodics, periodiccnt, HEAP0);
		1885	}
		1886	else if (w->interval)
		1887	{
		1888	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1889	/* if next trigger time is not sufficiently in the future, put it there */
		1890	/* this might happen because of floating point inexactness */
		1891	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1892	{
		1893	ev_at (w) += w->interval;
		1894
		1895	/* if interval is unreasonably low we might still have a time in the past */
		1896	/* so correct this. this will make the periodic very inexact, but the user */
		1897	/* has effectively asked to get triggered more often than possible */
		1898	if (ev_at (w) < ev_rt_now)
		1899	ev_at (w) = ev_rt_now;
		1900	}
		1901
		1902	ANHE_at_cache (periodics [HEAP0]);
		1903	downheap (periodics, periodiccnt, HEAP0);
		1904	}
		1905	else
		1906	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1907
		1908	EV_FREQUENT_CHECK;
		1909	feed_reverse (EV_A_ (W)w);
1769	}	1910	}
1770	else if (w->interval)	1911	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1771	{
1772	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1773	/* if next trigger time is not sufficiently in the future, put it there */
1774	/* this might happen because of floating point inexactness */
1775	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1776	{
1777	ev_at (w) += w->interval;
1778		1912
1779	/* if interval is unreasonably low we might still have a time in the past */
1780	/* so correct this. this will make the periodic very inexact, but the user */
1781	/* has effectively asked to get triggered more often than possible */
1782	if (ev_at (w) < ev_rt_now)
1783	ev_at (w) = ev_rt_now;
1784	}
1785
1786	ANHE_at_cache (periodics [HEAP0]);
1787	downheap (periodics, periodiccnt, HEAP0);
1788	}
1789	else
1790	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1791
1792	EV_FREQUENT_CHECK;
1793	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1913	feed_reverse_done (EV_A_ EV_PERIODIC);
1794	}	1914	}
1795	}	1915	}
1796		1916
		1917	/* simply recalculate all periodics */
		1918	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1797	static void noinline	1919	static void noinline
1798	periodics_reschedule (EV_P)	1920	periodics_reschedule (EV_P)
1799	{	1921	{
1800	int i;	1922	int i;
1801		1923
…		…
1814		1936
1815	reheap (periodics, periodiccnt);	1937	reheap (periodics, periodiccnt);
1816	}	1938	}
1817	#endif	1939	#endif
1818		1940
1819	void inline_speed	1941	/* adjust all timers by a given offset */
		1942	static void noinline
		1943	timers_reschedule (EV_P_ ev_tstamp adjust)
		1944	{
		1945	int i;
		1946
		1947	for (i = 0; i < timercnt; ++i)
		1948	{
		1949	ANHE *he = timers + i + HEAP0;
		1950	ANHE_w (*he)->at += adjust;
		1951	ANHE_at_cache (*he);
		1952	}
		1953	}
		1954
		1955	/* fetch new monotonic and realtime times from the kernel */
		1956	/* also detetc if there was a timejump, and act accordingly */
		1957	inline_speed void
1820	time_update (EV_P_ ev_tstamp max_block)	1958	time_update (EV_P_ ev_tstamp max_block)
1821	{	1959	{
1822	int i;
1823
1824	#if EV_USE_MONOTONIC	1960	#if EV_USE_MONOTONIC
1825	if (expect_true (have_monotonic))	1961	if (expect_true (have_monotonic))
1826	{	1962	{
		1963	int i;
1827	ev_tstamp odiff = rtmn_diff;	1964	ev_tstamp odiff = rtmn_diff;
1828		1965
1829	mn_now = get_clock ();	1966	mn_now = get_clock ();
1830		1967
1831	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	1968	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1857	ev_rt_now = ev_time ();	1994	ev_rt_now = ev_time ();
1858	mn_now = get_clock ();	1995	mn_now = get_clock ();
1859	now_floor = mn_now;	1996	now_floor = mn_now;
1860	}	1997	}
1861		1998
		1999	/* no timer adjustment, as the monotonic clock doesn't jump */
		2000	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1862	# if EV_PERIODIC_ENABLE	2001	# if EV_PERIODIC_ENABLE
1863	periodics_reschedule (EV_A);	2002	periodics_reschedule (EV_A);
1864	# endif	2003	# endif
1865	/* no timer adjustment, as the monotonic clock doesn't jump */
1866	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1867	}	2004	}
1868	else	2005	else
1869	#endif	2006	#endif
1870	{	2007	{
1871	ev_rt_now = ev_time ();	2008	ev_rt_now = ev_time ();
1872		2009
1873	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2010	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1874	{	2011	{
		2012	/* adjust timers. this is easy, as the offset is the same for all of them */
		2013	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1875	#if EV_PERIODIC_ENABLE	2014	#if EV_PERIODIC_ENABLE
1876	periodics_reschedule (EV_A);	2015	periodics_reschedule (EV_A);
1877	#endif	2016	#endif
1878	/* adjust timers. this is easy, as the offset is the same for all of them */
1879	for (i = 0; i < timercnt; ++i)
1880	{
1881	ANHE *he = timers + i + HEAP0;
1882	ANHE_w (*he)->at += ev_rt_now - mn_now;
1883	ANHE_at_cache (*he);
1884	}
1885	}	2017	}
1886		2018
1887	mn_now = ev_rt_now;	2019	mn_now = ev_rt_now;
1888	}	2020	}
1889	}
1890
1891	void
1892	ev_ref (EV_P)
1893	{
1894	++activecnt;
1895	}
1896
1897	void
1898	ev_unref (EV_P)
1899	{
1900	--activecnt;
1901	}
1902
1903	void
1904	ev_now_update (EV_P)
1905	{
1906	time_update (EV_A_ 1e100);
1907	}	2021	}
1908		2022
1909	static int loop_done;	2023	static int loop_done;
1910		2024
1911	void	2025	void
…		…
1945	{	2059	{
1946	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2060	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1947	call_pending (EV_A);	2061	call_pending (EV_A);
1948	}	2062	}
1949		2063
1950	if (expect_false (!activecnt))
1951	break;
1952
1953	/* we might have forked, so reify kernel state if necessary */	2064	/* we might have forked, so reify kernel state if necessary */
1954	if (expect_false (postfork))	2065	if (expect_false (postfork))
1955	loop_fork (EV_A);	2066	loop_fork (EV_A);
1956		2067
1957	/* update fd-related kernel structures */	2068	/* update fd-related kernel structures */
…		…
2036	ev_unloop (EV_P_ int how)	2147	ev_unloop (EV_P_ int how)
2037	{	2148	{
2038	loop_done = how;	2149	loop_done = how;
2039	}	2150	}
2040		2151
		2152	void
		2153	ev_ref (EV_P)
		2154	{
		2155	++activecnt;
		2156	}
		2157
		2158	void
		2159	ev_unref (EV_P)
		2160	{
		2161	--activecnt;
		2162	}
		2163
		2164	void
		2165	ev_now_update (EV_P)
		2166	{
		2167	time_update (EV_A_ 1e100);
		2168	}
		2169
		2170	void
		2171	ev_suspend (EV_P)
		2172	{
		2173	ev_now_update (EV_A);
		2174	}
		2175
		2176	void
		2177	ev_resume (EV_P)
		2178	{
		2179	ev_tstamp mn_prev = mn_now;
		2180
		2181	ev_now_update (EV_A);
		2182	timers_reschedule (EV_A_ mn_now - mn_prev);
		2183	#if EV_PERIODIC_ENABLE
		2184	/* TODO: really do this? */
		2185	periodics_reschedule (EV_A);
		2186	#endif
		2187	}
		2188
2041	/*****************************************************************************/	2189	/*****************************************************************************/
		2190	/* singly-linked list management, used when the expected list length is short */
2042		2191
2043	void inline_size	2192	inline_size void
2044	wlist_add (WL *head, WL elem)	2193	wlist_add (WL *head, WL elem)
2045	{	2194	{
2046	elem->next = *head;	2195	elem->next = *head;
2047	*head = elem;	2196	*head = elem;
2048	}	2197	}
2049		2198
2050	void inline_size	2199	inline_size void
2051	wlist_del (WL *head, WL elem)	2200	wlist_del (WL *head, WL elem)
2052	{	2201	{
2053	while (*head)	2202	while (*head)
2054	{	2203	{
2055	if (*head == elem)	2204	if (*head == elem)
…		…
2060		2209
2061	head = &(*head)->next;	2210	head = &(*head)->next;
2062	}	2211	}
2063	}	2212	}
2064		2213
2065	void inline_speed	2214	/* internal, faster, version of ev_clear_pending */
		2215	inline_speed void
2066	clear_pending (EV_P_ W w)	2216	clear_pending (EV_P_ W w)
2067	{	2217	{
2068	if (w->pending)	2218	if (w->pending)
2069	{	2219	{
2070	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2220	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2071	w->pending = 0;	2221	w->pending = 0;
2072	}	2222	}
2073	}	2223	}
2074		2224
2075	int	2225	int
…		…
2079	int pending = w_->pending;	2229	int pending = w_->pending;
2080		2230
2081	if (expect_true (pending))	2231	if (expect_true (pending))
2082	{	2232	{
2083	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2233	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2234	p->w = (W)&pending_w;
2084	w_->pending = 0;	2235	w_->pending = 0;
2085	p->w = 0;
2086	return p->events;	2236	return p->events;
2087	}	2237	}
2088	else	2238	else
2089	return 0;	2239	return 0;
2090	}	2240	}
2091		2241
2092	void inline_size	2242	inline_size void
2093	pri_adjust (EV_P_ W w)	2243	pri_adjust (EV_P_ W w)
2094	{	2244	{
2095	int pri = w->priority;	2245	int pri = w->priority;
2096	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2246	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2097	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2247	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2098	w->priority = pri;	2248	w->priority = pri;
2099	}	2249	}
2100		2250
2101	void inline_speed	2251	inline_speed void
2102	ev_start (EV_P_ W w, int active)	2252	ev_start (EV_P_ W w, int active)
2103	{	2253	{
2104	pri_adjust (EV_A_ w);	2254	pri_adjust (EV_A_ w);
2105	w->active = active;	2255	w->active = active;
2106	ev_ref (EV_A);	2256	ev_ref (EV_A);
2107	}	2257	}
2108		2258
2109	void inline_size	2259	inline_size void
2110	ev_stop (EV_P_ W w)	2260	ev_stop (EV_P_ W w)
2111	{	2261	{
2112	ev_unref (EV_A);	2262	ev_unref (EV_A);
2113	w->active = 0;	2263	w->active = 0;
2114	}	2264	}
…		…
2121	int fd = w->fd;	2271	int fd = w->fd;
2122		2272
2123	if (expect_false (ev_is_active (w)))	2273	if (expect_false (ev_is_active (w)))
2124	return;	2274	return;
2125		2275
2126	assert (("ev_io_start called with negative fd", fd >= 0));	2276	assert (("libev: ev_io_start called with negative fd", fd >= 0));
2127	assert (("ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE))));	2277	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2128		2278
2129	EV_FREQUENT_CHECK;	2279	EV_FREQUENT_CHECK;
2130		2280
2131	ev_start (EV_A_ (W)w, 1);	2281	ev_start (EV_A_ (W)w, 1);
2132	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2282	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2133	wlist_add (&anfds[fd].head, (WL)w);	2283	wlist_add (&anfds[fd].head, (WL)w);
2134		2284
2135	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2285	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
2136	w->events &= ~EV_IOFDSET;	2286	w->events &= ~EV__IOFDSET;
2137		2287
2138	EV_FREQUENT_CHECK;	2288	EV_FREQUENT_CHECK;
2139	}	2289	}
2140		2290
2141	void noinline	2291	void noinline
…		…
2143	{	2293	{
2144	clear_pending (EV_A_ (W)w);	2294	clear_pending (EV_A_ (W)w);
2145	if (expect_false (!ev_is_active (w)))	2295	if (expect_false (!ev_is_active (w)))
2146	return;	2296	return;
2147		2297
2148	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2298	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2149		2299
2150	EV_FREQUENT_CHECK;	2300	EV_FREQUENT_CHECK;
2151		2301
2152	wlist_del (&anfds[w->fd].head, (WL)w);	2302	wlist_del (&anfds[w->fd].head, (WL)w);
2153	ev_stop (EV_A_ (W)w);	2303	ev_stop (EV_A_ (W)w);
…		…
2163	if (expect_false (ev_is_active (w)))	2313	if (expect_false (ev_is_active (w)))
2164	return;	2314	return;
2165		2315
2166	ev_at (w) += mn_now;	2316	ev_at (w) += mn_now;
2167		2317
2168	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2318	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2169		2319
2170	EV_FREQUENT_CHECK;	2320	EV_FREQUENT_CHECK;
2171		2321
2172	++timercnt;	2322	++timercnt;
2173	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);	2323	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
…		…
2176	ANHE_at_cache (timers [ev_active (w)]);	2326	ANHE_at_cache (timers [ev_active (w)]);
2177	upheap (timers, ev_active (w));	2327	upheap (timers, ev_active (w));
2178		2328
2179	EV_FREQUENT_CHECK;	2329	EV_FREQUENT_CHECK;
2180		2330
2181	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2331	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2182	}	2332	}
2183		2333
2184	void noinline	2334	void noinline
2185	ev_timer_stop (EV_P_ ev_timer *w)	2335	ev_timer_stop (EV_P_ ev_timer *w)
2186	{	2336	{
…		…
2191	EV_FREQUENT_CHECK;	2341	EV_FREQUENT_CHECK;
2192		2342
2193	{	2343	{
2194	int active = ev_active (w);	2344	int active = ev_active (w);
2195		2345
2196	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2346	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2197		2347
2198	--timercnt;	2348	--timercnt;
2199		2349
2200	if (expect_true (active < timercnt + HEAP0))	2350	if (expect_true (active < timercnt + HEAP0))
2201	{	2351	{
…		…
2245		2395
2246	if (w->reschedule_cb)	2396	if (w->reschedule_cb)
2247	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2397	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2248	else if (w->interval)	2398	else if (w->interval)
2249	{	2399	{
2250	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2400	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2251	/* this formula differs from the one in periodic_reify because we do not always round up */	2401	/* this formula differs from the one in periodic_reify because we do not always round up */
2252	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2402	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2253	}	2403	}
2254	else	2404	else
2255	ev_at (w) = w->offset;	2405	ev_at (w) = w->offset;
…		…
2263	ANHE_at_cache (periodics [ev_active (w)]);	2413	ANHE_at_cache (periodics [ev_active (w)]);
2264	upheap (periodics, ev_active (w));	2414	upheap (periodics, ev_active (w));
2265		2415
2266	EV_FREQUENT_CHECK;	2416	EV_FREQUENT_CHECK;
2267		2417
2268	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2418	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2269	}	2419	}
2270		2420
2271	void noinline	2421	void noinline
2272	ev_periodic_stop (EV_P_ ev_periodic *w)	2422	ev_periodic_stop (EV_P_ ev_periodic *w)
2273	{	2423	{
…		…
2278	EV_FREQUENT_CHECK;	2428	EV_FREQUENT_CHECK;
2279		2429
2280	{	2430	{
2281	int active = ev_active (w);	2431	int active = ev_active (w);
2282		2432
2283	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2433	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2284		2434
2285	--periodiccnt;	2435	--periodiccnt;
2286		2436
2287	if (expect_true (active < periodiccnt + HEAP0))	2437	if (expect_true (active < periodiccnt + HEAP0))
2288	{	2438	{
…		…
2311		2461
2312	void noinline	2462	void noinline
2313	ev_signal_start (EV_P_ ev_signal *w)	2463	ev_signal_start (EV_P_ ev_signal *w)
2314	{	2464	{
2315	#if EV_MULTIPLICITY	2465	#if EV_MULTIPLICITY
2316	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2466	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2317	#endif	2467	#endif
2318	if (expect_false (ev_is_active (w)))	2468	if (expect_false (ev_is_active (w)))
2319	return;	2469	return;
2320		2470
2321	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2471	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2322		2472
2323	evpipe_init (EV_A);	2473	evpipe_init (EV_A);
2324		2474
2325	EV_FREQUENT_CHECK;	2475	EV_FREQUENT_CHECK;
2326		2476
…		…
2377		2527
2378	void	2528	void
2379	ev_child_start (EV_P_ ev_child *w)	2529	ev_child_start (EV_P_ ev_child *w)
2380	{	2530	{
2381	#if EV_MULTIPLICITY	2531	#if EV_MULTIPLICITY
2382	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2532	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2383	#endif	2533	#endif
2384	if (expect_false (ev_is_active (w)))	2534	if (expect_false (ev_is_active (w)))
2385	return;	2535	return;
2386		2536
2387	EV_FREQUENT_CHECK;	2537	EV_FREQUENT_CHECK;
…		…
2412	# ifdef _WIN32	2562	# ifdef _WIN32
2413	# undef lstat	2563	# undef lstat
2414	# define lstat(a,b) _stati64 (a,b)	2564	# define lstat(a,b) _stati64 (a,b)
2415	# endif	2565	# endif
2416		2566
2417	#define DEF_STAT_INTERVAL 5.0074891	2567	#define DEF_STAT_INTERVAL 5.0074891
		2568	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2418	#define MIN_STAT_INTERVAL 0.1074891	2569	#define MIN_STAT_INTERVAL 0.1074891
2419		2570
2420	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2571	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2421		2572
2422	#if EV_USE_INOTIFY	2573	#if EV_USE_INOTIFY
2423	# define EV_INOTIFY_BUFSIZE 8192	2574	# define EV_INOTIFY_BUFSIZE 8192
…		…
2427	{	2578	{
2428	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);	2579	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);
2429		2580
2430	if (w->wd < 0)	2581	if (w->wd < 0)
2431	{	2582	{
		2583	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2432	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2584	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2433		2585
2434	/* monitor some parent directory for speedup hints */	2586	/* monitor some parent directory for speedup hints */
2435	/* note that exceeding the hardcoded limit is not a correctness issue, */	2587	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2436	/* but an efficiency issue only */	2588	/* but an efficiency issue only */
2437	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2589	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2438	{	2590	{
2439	char path [4096];	2591	char path [4096];
2440	strcpy (path, w->path);	2592	strcpy (path, w->path);
…		…
2444	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2596	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2445	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2597	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2446		2598
2447	char *pend = strrchr (path, '/');	2599	char *pend = strrchr (path, '/');
2448		2600
2449	if (!pend)	2601	if (!pend || pend == path)
2450	break; /* whoops, no '/', complain to your admin */	2602	break;
2451		2603
2452	*pend = 0;	2604	*pend = 0;
2453	w->wd = inotify_add_watch (fs_fd, path, mask);	2605	w->wd = inotify_add_watch (fs_fd, path, mask);
2454	}	2606	}
2455	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2607	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2456	}	2608	}
2457	}	2609	}
2458	else
2459	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2460		2610
2461	if (w->wd >= 0)	2611	if (w->wd >= 0)
		2612	{
2462	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2613	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2614
		2615	/* now local changes will be tracked by inotify, but remote changes won't */
		2616	/* unless the filesystem it known to be local, we therefore still poll */
		2617	/* also do poll on <2.6.25, but with normal frequency */
		2618	struct statfs sfs;
		2619
		2620	if (fs_2625 && !statfs (w->path, &sfs))
		2621	if (sfs.f_type == 0x1373 /* devfs */
		2622	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2623	|| sfs.f_type == 0x3153464a /* jfs */
		2624	|| sfs.f_type == 0x52654973 /* reiser3 */
		2625	|| sfs.f_type == 0x01021994 /* tempfs */
		2626	|| sfs.f_type == 0x58465342 /* xfs */)
		2627	return;
		2628
		2629	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2630	ev_timer_again (EV_A_ &w->timer);
		2631	}
2463	}	2632	}
2464		2633
2465	static void noinline	2634	static void noinline
2466	infy_del (EV_P_ ev_stat *w)	2635	infy_del (EV_P_ ev_stat *w)
2467	{	2636	{
…		…
2497		2666
2498	if (w->wd == wd || wd == -1)	2667	if (w->wd == wd || wd == -1)
2499	{	2668	{
2500	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2669	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2501	{	2670	{
		2671	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2502	w->wd = -1;	2672	w->wd = -1;
2503	infy_add (EV_A_ w); /* re-add, no matter what */	2673	infy_add (EV_A_ w); /* re-add, no matter what */
2504	}	2674	}
2505		2675
2506	stat_timer_cb (EV_A_ &w->timer, 0);	2676	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2519		2689
2520	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2690	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2521	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2691	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2522	}	2692	}
2523		2693
2524	void inline_size	2694	inline_size void
2525	infy_init (EV_P)	2695	check_2625 (EV_P)
2526	{	2696	{
2527	if (fs_fd != -2)
2528	return;
2529
2530	/* kernels < 2.6.25 are borked	2697	/* kernels < 2.6.25 are borked
2531	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html	2698	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2532	*/	2699	*/
2533	{
2534	struct utsname buf;	2700	struct utsname buf;
2535	int major, minor, micro;	2701	int major, minor, micro;
2536		2702
2537	fs_fd = -1;
2538
2539	if (uname (&buf))	2703	if (uname (&buf))
2540	return;	2704	return;
2541		2705
2542	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)	2706	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2543	return;	2707	return;
2544		2708
2545	if (major < 2	2709	if (major < 2
2546	|| (major == 2 && minor < 6)	2710	|| (major == 2 && minor < 6)
2547	|| (major == 2 && minor == 6 && micro < 25))	2711	|| (major == 2 && minor == 6 && micro < 25))
2548	return;	2712	return;
2549	}	2713
		2714	fs_2625 = 1;
		2715	}
		2716
		2717	inline_size void
		2718	infy_init (EV_P)
		2719	{
		2720	if (fs_fd != -2)
		2721	return;
		2722
		2723	fs_fd = -1;
		2724
		2725	check_2625 (EV_A);
2550		2726
2551	fs_fd = inotify_init ();	2727	fs_fd = inotify_init ();
2552		2728
2553	if (fs_fd >= 0)	2729	if (fs_fd >= 0)
2554	{	2730	{
…		…
2556	ev_set_priority (&fs_w, EV_MAXPRI);	2732	ev_set_priority (&fs_w, EV_MAXPRI);
2557	ev_io_start (EV_A_ &fs_w);	2733	ev_io_start (EV_A_ &fs_w);
2558	}	2734	}
2559	}	2735	}
2560		2736
2561	void inline_size	2737	inline_size void
2562	infy_fork (EV_P)	2738	infy_fork (EV_P)
2563	{	2739	{
2564	int slot;	2740	int slot;
2565		2741
2566	if (fs_fd < 0)	2742	if (fs_fd < 0)
…		…
2582	w->wd = -1;	2758	w->wd = -1;
2583		2759
2584	if (fs_fd >= 0)	2760	if (fs_fd >= 0)
2585	infy_add (EV_A_ w); /* re-add, no matter what */	2761	infy_add (EV_A_ w); /* re-add, no matter what */
2586	else	2762	else
2587	ev_timer_start (EV_A_ &w->timer);	2763	ev_timer_again (EV_A_ &w->timer);
2588	}	2764	}
2589	}	2765	}
2590	}	2766	}
2591		2767
2592	#endif	2768	#endif
…		…
2647	ev_stat_start (EV_P_ ev_stat *w)	2823	ev_stat_start (EV_P_ ev_stat *w)
2648	{	2824	{
2649	if (expect_false (ev_is_active (w)))	2825	if (expect_false (ev_is_active (w)))
2650	return;	2826	return;
2651		2827
2652	/* since we use memcmp, we need to clear any padding data etc. */
2653	memset (&w->prev, 0, sizeof (ev_statdata));
2654	memset (&w->attr, 0, sizeof (ev_statdata));
2655
2656	ev_stat_stat (EV_A_ w);	2828	ev_stat_stat (EV_A_ w);
2657		2829
		2830	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2658	if (w->interval < MIN_STAT_INTERVAL)	2831	w->interval = MIN_STAT_INTERVAL;
2659	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2660		2832
2661	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2833	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2662	ev_set_priority (&w->timer, ev_priority (w));	2834	ev_set_priority (&w->timer, ev_priority (w));
2663		2835
2664	#if EV_USE_INOTIFY	2836	#if EV_USE_INOTIFY
2665	infy_init (EV_A);	2837	infy_init (EV_A);
2666		2838
2667	if (fs_fd >= 0)	2839	if (fs_fd >= 0)
2668	infy_add (EV_A_ w);	2840	infy_add (EV_A_ w);
2669	else	2841	else
2670	#endif	2842	#endif
2671	ev_timer_start (EV_A_ &w->timer);	2843	ev_timer_again (EV_A_ &w->timer);
2672		2844
2673	ev_start (EV_A_ (W)w, 1);	2845	ev_start (EV_A_ (W)w, 1);
2674		2846
2675	EV_FREQUENT_CHECK;	2847	EV_FREQUENT_CHECK;
2676	}	2848	}
…		…
2851	static void	3023	static void
2852	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)	3024	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2853	{	3025	{
2854	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));	3026	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2855		3027
		3028	ev_embed_stop (EV_A_ w);
		3029
2856	{	3030	{
2857	struct ev_loop *loop = w->other;	3031	struct ev_loop *loop = w->other;
2858		3032
2859	ev_loop_fork (EV_A);	3033	ev_loop_fork (EV_A);
		3034	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2860	}	3035	}
		3036
		3037	ev_embed_start (EV_A_ w);
2861	}	3038	}
2862		3039
2863	#if 0	3040	#if 0
2864	static void	3041	static void
2865	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3042	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
…		…
2874	if (expect_false (ev_is_active (w)))	3051	if (expect_false (ev_is_active (w)))
2875	return;	3052	return;
2876		3053
2877	{	3054	{
2878	struct ev_loop *loop = w->other;	3055	struct ev_loop *loop = w->other;
2879	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3056	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2880	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3057	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2881	}	3058	}
2882		3059
2883	EV_FREQUENT_CHECK;	3060	EV_FREQUENT_CHECK;
2884		3061
…		…
3067	ev_timer_set (&once->to, timeout, 0.);	3244	ev_timer_set (&once->to, timeout, 0.);
3068	ev_timer_start (EV_A_ &once->to);	3245	ev_timer_start (EV_A_ &once->to);
3069	}	3246	}
3070	}	3247	}
3071		3248
		3249	/*****************************************************************************/
		3250
		3251	#if EV_WALK_ENABLE
		3252	void
		3253	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3254	{
		3255	int i, j;
		3256	ev_watcher_list *wl, *wn;
		3257
		3258	if (types & (EV_IO | EV_EMBED))
		3259	for (i = 0; i < anfdmax; ++i)
		3260	for (wl = anfds [i].head; wl; )
		3261	{
		3262	wn = wl->next;
		3263
		3264	#if EV_EMBED_ENABLE
		3265	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3266	{
		3267	if (types & EV_EMBED)
		3268	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3269	}
		3270	else
		3271	#endif
		3272	#if EV_USE_INOTIFY
		3273	if (ev_cb ((ev_io *)wl) == infy_cb)
		3274	;
		3275	else
		3276	#endif
		3277	if ((ev_io *)wl != &pipe_w)
		3278	if (types & EV_IO)
		3279	cb (EV_A_ EV_IO, wl);
		3280
		3281	wl = wn;
		3282	}
		3283
		3284	if (types & (EV_TIMER | EV_STAT))
		3285	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3286	#if EV_STAT_ENABLE
		3287	/*TODO: timer is not always active*/
		3288	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3289	{
		3290	if (types & EV_STAT)
		3291	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3292	}
		3293	else
		3294	#endif
		3295	if (types & EV_TIMER)
		3296	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3297
		3298	#if EV_PERIODIC_ENABLE
		3299	if (types & EV_PERIODIC)
		3300	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3301	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3302	#endif
		3303
		3304	#if EV_IDLE_ENABLE
		3305	if (types & EV_IDLE)
		3306	for (j = NUMPRI; i--; )
		3307	for (i = idlecnt [j]; i--; )
		3308	cb (EV_A_ EV_IDLE, idles [j][i]);
		3309	#endif
		3310
		3311	#if EV_FORK_ENABLE
		3312	if (types & EV_FORK)
		3313	for (i = forkcnt; i--; )
		3314	if (ev_cb (forks [i]) != embed_fork_cb)
		3315	cb (EV_A_ EV_FORK, forks [i]);
		3316	#endif
		3317
		3318	#if EV_ASYNC_ENABLE
		3319	if (types & EV_ASYNC)
		3320	for (i = asynccnt; i--; )
		3321	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3322	#endif
		3323
		3324	if (types & EV_PREPARE)
		3325	for (i = preparecnt; i--; )
		3326	#if EV_EMBED_ENABLE
		3327	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3328	#endif
		3329	cb (EV_A_ EV_PREPARE, prepares [i]);
		3330
		3331	if (types & EV_CHECK)
		3332	for (i = checkcnt; i--; )
		3333	cb (EV_A_ EV_CHECK, checks [i]);
		3334
		3335	if (types & EV_SIGNAL)
		3336	for (i = 0; i < signalmax; ++i)
		3337	for (wl = signals [i].head; wl; )
		3338	{
		3339	wn = wl->next;
		3340	cb (EV_A_ EV_SIGNAL, wl);
		3341	wl = wn;
		3342	}
		3343
		3344	if (types & EV_CHILD)
		3345	for (i = EV_PID_HASHSIZE; i--; )
		3346	for (wl = childs [i]; wl; )
		3347	{
		3348	wn = wl->next;
		3349	cb (EV_A_ EV_CHILD, wl);
		3350	wl = wn;
		3351	}
		3352	/* EV_STAT 0x00001000 /* stat data changed */
		3353	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3354	}
		3355	#endif
		3356
3072	#if EV_MULTIPLICITY	3357	#if EV_MULTIPLICITY
3073	#include "ev_wrap.h"	3358	#include "ev_wrap.h"
3074	#endif	3359	#endif
3075		3360
3076	#ifdef __cplusplus	3361	#ifdef __cplusplus

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