ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.271 by root, Mon Nov 3 12:13:15 2008 UTC vs.
Revision 1.288 by root, Sat Apr 25 14:12:48 2009 UTC

1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without modifica-	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* tion, are permitted provided that the following conditions are met:	8	* tion, are permitted provided that the following conditions are met:
9	*	9	*
…		…
47	# include EV_CONFIG_H	47	# include EV_CONFIG_H
48	# else	48	# else
49	# include "config.h"	49	# include "config.h"
50	# endif	50	# endif
51		51
		52	# if HAVE_CLOCK_SYSCALL
		53	# ifndef EV_USE_CLOCK_SYSCALL
		54	# define EV_USE_CLOCK_SYSCALL 1
		55	# ifndef EV_USE_REALTIME
		56	# define EV_USE_REALTIME 0
		57	# endif
		58	# ifndef EV_USE_MONOTONIC
		59	# define EV_USE_MONOTONIC 1
		60	# endif
		61	# endif
		62	# endif
		63
52	# if HAVE_CLOCK_GETTIME	64	# if HAVE_CLOCK_GETTIME
53	# ifndef EV_USE_MONOTONIC	65	# ifndef EV_USE_MONOTONIC
54	# define EV_USE_MONOTONIC 1	66	# define EV_USE_MONOTONIC 1
55	# endif	67	# endif
56	# ifndef EV_USE_REALTIME	68	# ifndef EV_USE_REALTIME
57	# define EV_USE_REALTIME 1	69	# define EV_USE_REALTIME 0
58	# endif	70	# endif
59	# else	71	# else
60	# ifndef EV_USE_MONOTONIC	72	# ifndef EV_USE_MONOTONIC
61	# define EV_USE_MONOTONIC 0	73	# define EV_USE_MONOTONIC 0
62	# endif	74	# endif
…		…
164	# endif	176	# endif
165	#endif	177	#endif
166		178
167	/* this block tries to deduce configuration from header-defined symbols and defaults */	179	/* this block tries to deduce configuration from header-defined symbols and defaults */
168		180
		181	#ifndef EV_USE_CLOCK_SYSCALL
		182	# if __linux && __GLIBC__ >= 2
		183	# define EV_USE_CLOCK_SYSCALL 1
		184	# else
		185	# define EV_USE_CLOCK_SYSCALL 0
		186	# endif
		187	#endif
		188
169	#ifndef EV_USE_MONOTONIC	189	#ifndef EV_USE_MONOTONIC
170	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0	190	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
171	# define EV_USE_MONOTONIC 1	191	# define EV_USE_MONOTONIC 1
172	# else	192	# else
173	# define EV_USE_MONOTONIC 0	193	# define EV_USE_MONOTONIC 0
174	# endif	194	# endif
175	#endif	195	#endif
176		196
177	#ifndef EV_USE_REALTIME	197	#ifndef EV_USE_REALTIME
178	# define EV_USE_REALTIME 0	198	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
179	#endif	199	#endif
180		200
181	#ifndef EV_USE_NANOSLEEP	201	#ifndef EV_USE_NANOSLEEP
182	# if _POSIX_C_SOURCE >= 199309L	202	# if _POSIX_C_SOURCE >= 199309L
183	# define EV_USE_NANOSLEEP 1	203	# define EV_USE_NANOSLEEP 1
…		…
300		320
301	#if EV_SELECT_IS_WINSOCKET	321	#if EV_SELECT_IS_WINSOCKET
302	# include <winsock.h>	322	# include <winsock.h>
303	#endif	323	#endif
304		324
		325	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		326	/* which makes programs even slower. might work on other unices, too. */
		327	#if EV_USE_CLOCK_SYSCALL
		328	# include <syscall.h>
		329	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		330	# undef EV_USE_MONOTONIC
		331	# define EV_USE_MONOTONIC 1
		332	#endif
		333
305	#if EV_USE_EVENTFD	334	#if EV_USE_EVENTFD
306	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	335	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
307	# include <stdint.h>	336	# include <stdint.h>
308	# ifdef __cplusplus	337	# ifdef __cplusplus
309	extern "C" {	338	extern "C" {
…		…
368	typedef ev_watcher_time *WT;	397	typedef ev_watcher_time *WT;
369		398
370	#define ev_active(w) ((W)(w))->active	399	#define ev_active(w) ((W)(w))->active
371	#define ev_at(w) ((WT)(w))->at	400	#define ev_at(w) ((WT)(w))->at
372		401
373	#if EV_USE_MONOTONIC	402	#if EV_USE_REALTIME
374	/* sig_atomic_t is used to avoid per-thread variables or locking but still */	403	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
375	/* giving it a reasonably high chance of working on typical architetcures */	404	/* giving it a reasonably high chance of working on typical architetcures */
		405	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		406	#endif
		407
		408	#if EV_USE_MONOTONIC
376	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	409	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
377	#endif	410	#endif
378		411
379	#ifdef _WIN32	412	#ifdef _WIN32
380	# include "ev_win32.c"	413	# include "ev_win32.c"
…		…
445	#define ev_malloc(size) ev_realloc (0, (size))	478	#define ev_malloc(size) ev_realloc (0, (size))
446	#define ev_free(ptr) ev_realloc ((ptr), 0)	479	#define ev_free(ptr) ev_realloc ((ptr), 0)
447		480
448	/*****************************************************************************/	481	/*****************************************************************************/
449		482
		483	/* file descriptor info structure */
450	typedef struct	484	typedef struct
451	{	485	{
452	WL head;	486	WL head;
453	unsigned char events;	487	unsigned char events; /* the events watched for */
454	unsigned char reify;	488	unsigned char reify; /* flag set when this ANFD needs reification */
455	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */	489	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
456	unsigned char unused;	490	unsigned char unused;
457	#if EV_USE_EPOLL	491	#if EV_USE_EPOLL
458	unsigned int egen; /* generation counter to counter epoll bugs */	492	unsigned int egen; /* generation counter to counter epoll bugs */
459	#endif	493	#endif
460	#if EV_SELECT_IS_WINSOCKET	494	#if EV_SELECT_IS_WINSOCKET
461	SOCKET handle;	495	SOCKET handle;
462	#endif	496	#endif
463	} ANFD;	497	} ANFD;
464		498
		499	/* stores the pending event set for a given watcher */
465	typedef struct	500	typedef struct
466	{	501	{
467	W w;	502	W w;
468	int events;	503	int events; /* the pending event set for the given watcher */
469	} ANPENDING;	504	} ANPENDING;
470		505
471	#if EV_USE_INOTIFY	506	#if EV_USE_INOTIFY
472	/* hash table entry per inotify-id */	507	/* hash table entry per inotify-id */
473	typedef struct	508	typedef struct
…		…
476	} ANFS;	511	} ANFS;
477	#endif	512	#endif
478		513
479	/* Heap Entry */	514	/* Heap Entry */
480	#if EV_HEAP_CACHE_AT	515	#if EV_HEAP_CACHE_AT
		516	/* a heap element */
481	typedef struct {	517	typedef struct {
482	ev_tstamp at;	518	ev_tstamp at;
483	WT w;	519	WT w;
484	} ANHE;	520	} ANHE;
485		521
486	#define ANHE_w(he) (he).w /* access watcher, read-write */	522	#define ANHE_w(he) (he).w /* access watcher, read-write */
487	#define ANHE_at(he) (he).at /* access cached at, read-only */	523	#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 */	524	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
489	#else	525	#else
		526	/* a heap element */
490	typedef WT ANHE;	527	typedef WT ANHE;
491		528
492	#define ANHE_w(he) (he)	529	#define ANHE_w(he) (he)
493	#define ANHE_at(he) (he)->at	530	#define ANHE_at(he) (he)->at
494	#define ANHE_at_cache(he)	531	#define ANHE_at_cache(he)
…		…
524		561
525	ev_tstamp	562	ev_tstamp
526	ev_time (void)	563	ev_time (void)
527	{	564	{
528	#if EV_USE_REALTIME	565	#if EV_USE_REALTIME
		566	if (expect_true (have_realtime))
		567	{
529	struct timespec ts;	568	struct timespec ts;
530	clock_gettime (CLOCK_REALTIME, &ts);	569	clock_gettime (CLOCK_REALTIME, &ts);
531	return ts.tv_sec + ts.tv_nsec * 1e-9;	570	return ts.tv_sec + ts.tv_nsec * 1e-9;
532	#else	571	}
		572	#endif
		573
533	struct timeval tv;	574	struct timeval tv;
534	gettimeofday (&tv, 0);	575	gettimeofday (&tv, 0);
535	return tv.tv_sec + tv.tv_usec * 1e-6;	576	return tv.tv_sec + tv.tv_usec * 1e-6;
536	#endif
537	}	577	}
538		578
539	ev_tstamp inline_size	579	inline_size ev_tstamp
540	get_clock (void)	580	get_clock (void)
541	{	581	{
542	#if EV_USE_MONOTONIC	582	#if EV_USE_MONOTONIC
543	if (expect_true (have_monotonic))	583	if (expect_true (have_monotonic))
544	{	584	{
…		…
589		629
590	/*****************************************************************************/	630	/*****************************************************************************/
591		631
592	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	632	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
593		633
594	int inline_size	634	/* find a suitable new size for the given array, */
		635	/* hopefully by rounding to a ncie-to-malloc size */
		636	inline_size int
595	array_nextsize (int elem, int cur, int cnt)	637	array_nextsize (int elem, int cur, int cnt)
596	{	638	{
597	int ncur = cur + 1;	639	int ncur = cur + 1;
598		640
599	do	641	do
…		…
640	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	682	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
641	}	683	}
642	#endif	684	#endif
643		685
644	#define array_free(stem, idx) \	686	#define array_free(stem, idx) \
645	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	687	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
646		688
647	/*****************************************************************************/	689	/*****************************************************************************/
		690
		691	/* dummy callback for pending events */
		692	static void noinline
		693	pendingcb (EV_P_ ev_prepare *w, int revents)
		694	{
		695	}
648		696
649	void noinline	697	void noinline
650	ev_feed_event (EV_P_ void *w, int revents)	698	ev_feed_event (EV_P_ void *w, int revents)
651	{	699	{
652	W w_ = (W)w;	700	W w_ = (W)w;
…		…
661	pendings [pri][w_->pending - 1].w = w_;	709	pendings [pri][w_->pending - 1].w = w_;
662	pendings [pri][w_->pending - 1].events = revents;	710	pendings [pri][w_->pending - 1].events = revents;
663	}	711	}
664	}	712	}
665		713
666	void inline_speed	714	inline_speed void
		715	feed_reverse (EV_P_ W w)
		716	{
		717	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		718	rfeeds [rfeedcnt++] = w;
		719	}
		720
		721	inline_size void
		722	feed_reverse_done (EV_P_ int revents)
		723	{
		724	do
		725	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		726	while (rfeedcnt);
		727	}
		728
		729	inline_speed void
667	queue_events (EV_P_ W *events, int eventcnt, int type)	730	queue_events (EV_P_ W *events, int eventcnt, int type)
668	{	731	{
669	int i;	732	int i;
670		733
671	for (i = 0; i < eventcnt; ++i)	734	for (i = 0; i < eventcnt; ++i)
672	ev_feed_event (EV_A_ events [i], type);	735	ev_feed_event (EV_A_ events [i], type);
673	}	736	}
674		737
675	/*****************************************************************************/	738	/*****************************************************************************/
676		739
677	void inline_speed	740	inline_speed void
678	fd_event (EV_P_ int fd, int revents)	741	fd_event (EV_P_ int fd, int revents)
679	{	742	{
680	ANFD *anfd = anfds + fd;	743	ANFD *anfd = anfds + fd;
681	ev_io *w;	744	ev_io *w;
682		745
…		…
694	{	757	{
695	if (fd >= 0 && fd < anfdmax)	758	if (fd >= 0 && fd < anfdmax)
696	fd_event (EV_A_ fd, revents);	759	fd_event (EV_A_ fd, revents);
697	}	760	}
698		761
699	void inline_size	762	/* make sure the external fd watch events are in-sync */
		763	/* with the kernel/libev internal state */
		764	inline_size void
700	fd_reify (EV_P)	765	fd_reify (EV_P)
701	{	766	{
702	int i;	767	int i;
703		768
704	for (i = 0; i < fdchangecnt; ++i)	769	for (i = 0; i < fdchangecnt; ++i)
…		…
719	#ifdef EV_FD_TO_WIN32_HANDLE	784	#ifdef EV_FD_TO_WIN32_HANDLE
720	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	785	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
721	#else	786	#else
722	anfd->handle = _get_osfhandle (fd);	787	anfd->handle = _get_osfhandle (fd);
723	#endif	788	#endif
724	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	789	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
725	}	790	}
726	#endif	791	#endif
727		792
728	{	793	{
729	unsigned char o_events = anfd->events;	794	unsigned char o_events = anfd->events;
730	unsigned char o_reify = anfd->reify;	795	unsigned char o_reify = anfd->reify;
731		796
732	anfd->reify = 0;	797	anfd->reify = 0;
733	anfd->events = events;	798	anfd->events = events;
734		799
735	if (o_events != events || o_reify & EV_IOFDSET)	800	if (o_events != events || o_reify & EV__IOFDSET)
736	backend_modify (EV_A_ fd, o_events, events);	801	backend_modify (EV_A_ fd, o_events, events);
737	}	802	}
738	}	803	}
739		804
740	fdchangecnt = 0;	805	fdchangecnt = 0;
741	}	806	}
742		807
743	void inline_size	808	/* something about the given fd changed */
		809	inline_size void
744	fd_change (EV_P_ int fd, int flags)	810	fd_change (EV_P_ int fd, int flags)
745	{	811	{
746	unsigned char reify = anfds [fd].reify;	812	unsigned char reify = anfds [fd].reify;
747	anfds [fd].reify |= flags;	813	anfds [fd].reify |= flags;
748		814
…		…
752	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	818	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
753	fdchanges [fdchangecnt - 1] = fd;	819	fdchanges [fdchangecnt - 1] = fd;
754	}	820	}
755	}	821	}
756		822
757	void inline_speed	823	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		824	inline_speed void
758	fd_kill (EV_P_ int fd)	825	fd_kill (EV_P_ int fd)
759	{	826	{
760	ev_io *w;	827	ev_io *w;
761		828
762	while ((w = (ev_io *)anfds [fd].head))	829	while ((w = (ev_io *)anfds [fd].head))
…		…
764	ev_io_stop (EV_A_ w);	831	ev_io_stop (EV_A_ w);
765	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	832	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
766	}	833	}
767	}	834	}
768		835
769	int inline_size	836	/* check whether the given fd is atcually valid, for error recovery */
		837	inline_size int
770	fd_valid (int fd)	838	fd_valid (int fd)
771	{	839	{
772	#ifdef _WIN32	840	#ifdef _WIN32
773	return _get_osfhandle (fd) != -1;	841	return _get_osfhandle (fd) != -1;
774	#else	842	#else
…		…
811	for (fd = 0; fd < anfdmax; ++fd)	879	for (fd = 0; fd < anfdmax; ++fd)
812	if (anfds [fd].events)	880	if (anfds [fd].events)
813	{	881	{
814	anfds [fd].events = 0;	882	anfds [fd].events = 0;
815	anfds [fd].emask = 0;	883	anfds [fd].emask = 0;
816	fd_change (EV_A_ fd, EV_IOFDSET | 1);	884	fd_change (EV_A_ fd, EV__IOFDSET | 1);
817	}	885	}
818	}	886	}
819		887
820	/*****************************************************************************/	888	/*****************************************************************************/
821		889
…		…
837	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	905	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
838	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)	906	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
839	#define UPHEAP_DONE(p,k) ((p) == (k))	907	#define UPHEAP_DONE(p,k) ((p) == (k))
840		908
841	/* away from the root */	909	/* away from the root */
842	void inline_speed	910	inline_speed void
843	downheap (ANHE *heap, int N, int k)	911	downheap (ANHE *heap, int N, int k)
844	{	912	{
845	ANHE he = heap [k];	913	ANHE he = heap [k];
846	ANHE *E = heap + N + HEAP0;	914	ANHE *E = heap + N + HEAP0;
847		915
…		…
887	#define HEAP0 1	955	#define HEAP0 1
888	#define HPARENT(k) ((k) >> 1)	956	#define HPARENT(k) ((k) >> 1)
889	#define UPHEAP_DONE(p,k) (!(p))	957	#define UPHEAP_DONE(p,k) (!(p))
890		958
891	/* away from the root */	959	/* away from the root */
892	void inline_speed	960	inline_speed void
893	downheap (ANHE *heap, int N, int k)	961	downheap (ANHE *heap, int N, int k)
894	{	962	{
895	ANHE he = heap [k];	963	ANHE he = heap [k];
896		964
897	for (;;)	965	for (;;)
…		…
917	ev_active (ANHE_w (he)) = k;	985	ev_active (ANHE_w (he)) = k;
918	}	986	}
919	#endif	987	#endif
920		988
921	/* towards the root */	989	/* towards the root */
922	void inline_speed	990	inline_speed void
923	upheap (ANHE *heap, int k)	991	upheap (ANHE *heap, int k)
924	{	992	{
925	ANHE he = heap [k];	993	ANHE he = heap [k];
926		994
927	for (;;)	995	for (;;)
…		…
938		1006
939	heap [k] = he;	1007	heap [k] = he;
940	ev_active (ANHE_w (he)) = k;	1008	ev_active (ANHE_w (he)) = k;
941	}	1009	}
942		1010
943	void inline_size	1011	/* move an element suitably so it is in a correct place */
		1012	inline_size void
944	adjustheap (ANHE *heap, int N, int k)	1013	adjustheap (ANHE *heap, int N, int k)
945	{	1014	{
946	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1015	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
947	upheap (heap, k);	1016	upheap (heap, k);
948	else	1017	else
949	downheap (heap, N, k);	1018	downheap (heap, N, k);
950	}	1019	}
951		1020
952	/* rebuild the heap: this function is used only once and executed rarely */	1021	/* rebuild the heap: this function is used only once and executed rarely */
953	void inline_size	1022	inline_size void
954	reheap (ANHE *heap, int N)	1023	reheap (ANHE *heap, int N)
955	{	1024	{
956	int i;	1025	int i;
957		1026
958	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */	1027	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
…		…
961	upheap (heap, i + HEAP0);	1030	upheap (heap, i + HEAP0);
962	}	1031	}
963		1032
964	/*****************************************************************************/	1033	/*****************************************************************************/
965		1034
		1035	/* associate signal watchers to a signal signal */
966	typedef struct	1036	typedef struct
967	{	1037	{
968	WL head;	1038	WL head;
969	EV_ATOMIC_T gotsig;	1039	EV_ATOMIC_T gotsig;
970	} ANSIG;	1040	} ANSIG;
…		…
974		1044
975	static EV_ATOMIC_T gotsig;	1045	static EV_ATOMIC_T gotsig;
976		1046
977	/*****************************************************************************/	1047	/*****************************************************************************/
978		1048
979	void inline_speed	1049	/* used to prepare libev internal fd's */
		1050	/* this is not fork-safe */
		1051	inline_speed void
980	fd_intern (int fd)	1052	fd_intern (int fd)
981	{	1053	{
982	#ifdef _WIN32	1054	#ifdef _WIN32
983	unsigned long arg = 1;	1055	unsigned long arg = 1;
984	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1056	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
989	}	1061	}
990		1062
991	static void noinline	1063	static void noinline
992	evpipe_init (EV_P)	1064	evpipe_init (EV_P)
993	{	1065	{
994	if (!ev_is_active (&pipeev))	1066	if (!ev_is_active (&pipe_w))
995	{	1067	{
996	#if EV_USE_EVENTFD	1068	#if EV_USE_EVENTFD
997	if ((evfd = eventfd (0, 0)) >= 0)	1069	if ((evfd = eventfd (0, 0)) >= 0)
998	{	1070	{
999	evpipe [0] = -1;	1071	evpipe [0] = -1;
1000	fd_intern (evfd);	1072	fd_intern (evfd);
1001	ev_io_set (&pipeev, evfd, EV_READ);	1073	ev_io_set (&pipe_w, evfd, EV_READ);
1002	}	1074	}
1003	else	1075	else
1004	#endif	1076	#endif
1005	{	1077	{
1006	while (pipe (evpipe))	1078	while (pipe (evpipe))
1007	ev_syserr ("(libev) error creating signal/async pipe");	1079	ev_syserr ("(libev) error creating signal/async pipe");
1008		1080
1009	fd_intern (evpipe [0]);	1081	fd_intern (evpipe [0]);
1010	fd_intern (evpipe [1]);	1082	fd_intern (evpipe [1]);
1011	ev_io_set (&pipeev, evpipe [0], EV_READ);	1083	ev_io_set (&pipe_w, evpipe [0], EV_READ);
1012	}	1084	}
1013		1085
1014	ev_io_start (EV_A_ &pipeev);	1086	ev_io_start (EV_A_ &pipe_w);
1015	ev_unref (EV_A); /* watcher should not keep loop alive */	1087	ev_unref (EV_A); /* watcher should not keep loop alive */
1016	}	1088	}
1017	}	1089	}
1018		1090
1019	void inline_size	1091	inline_size void
1020	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1092	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1021	{	1093	{
1022	if (!*flag)	1094	if (!*flag)
1023	{	1095	{
1024	int old_errno = errno; /* save errno because write might clobber it */	1096	int old_errno = errno; /* save errno because write might clobber it */
…		…
1037		1109
1038	errno = old_errno;	1110	errno = old_errno;
1039	}	1111	}
1040	}	1112	}
1041		1113
		1114	/* called whenever the libev signal pipe */
		1115	/* got some events (signal, async) */
1042	static void	1116	static void
1043	pipecb (EV_P_ ev_io *iow, int revents)	1117	pipecb (EV_P_ ev_io *iow, int revents)
1044	{	1118	{
1045	#if EV_USE_EVENTFD	1119	#if EV_USE_EVENTFD
1046	if (evfd >= 0)	1120	if (evfd >= 0)
…		…
1102	ev_feed_signal_event (EV_P_ int signum)	1176	ev_feed_signal_event (EV_P_ int signum)
1103	{	1177	{
1104	WL w;	1178	WL w;
1105		1179
1106	#if EV_MULTIPLICITY	1180	#if EV_MULTIPLICITY
1107	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1181	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1108	#endif	1182	#endif
1109		1183
1110	--signum;	1184	--signum;
1111		1185
1112	if (signum < 0 || signum >= signalmax)	1186	if (signum < 0 || signum >= signalmax)
…		…
1128		1202
1129	#ifndef WIFCONTINUED	1203	#ifndef WIFCONTINUED
1130	# define WIFCONTINUED(status) 0	1204	# define WIFCONTINUED(status) 0
1131	#endif	1205	#endif
1132		1206
1133	void inline_speed	1207	/* handle a single child status event */
		1208	inline_speed void
1134	child_reap (EV_P_ int chain, int pid, int status)	1209	child_reap (EV_P_ int chain, int pid, int status)
1135	{	1210	{
1136	ev_child *w;	1211	ev_child *w;
1137	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1212	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1138		1213
…		…
1151		1226
1152	#ifndef WCONTINUED	1227	#ifndef WCONTINUED
1153	# define WCONTINUED 0	1228	# define WCONTINUED 0
1154	#endif	1229	#endif
1155		1230
		1231	/* called on sigchld etc., calls waitpid */
1156	static void	1232	static void
1157	childcb (EV_P_ ev_signal *sw, int revents)	1233	childcb (EV_P_ ev_signal *sw, int revents)
1158	{	1234	{
1159	int pid, status;	1235	int pid, status;
1160		1236
…		…
1241	/* kqueue is borked on everything but netbsd apparently */	1317	/* kqueue is borked on everything but netbsd apparently */
1242	/* it usually doesn't work correctly on anything but sockets and pipes */	1318	/* it usually doesn't work correctly on anything but sockets and pipes */
1243	flags &= ~EVBACKEND_KQUEUE;	1319	flags &= ~EVBACKEND_KQUEUE;
1244	#endif	1320	#endif
1245	#ifdef __APPLE__	1321	#ifdef __APPLE__
1246	// flags &= ~EVBACKEND_KQUEUE; for documentation	1322	/* only select works correctly on that "unix-certified" platform */
1247	flags &= ~EVBACKEND_POLL;	1323	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1324	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1248	#endif	1325	#endif
1249		1326
1250	return flags;	1327	return flags;
1251	}	1328	}
1252		1329
…		…
1284	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1361	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1285	{	1362	{
1286	timeout_blocktime = interval;	1363	timeout_blocktime = interval;
1287	}	1364	}
1288		1365
		1366	/* initialise a loop structure, must be zero-initialised */
1289	static void noinline	1367	static void noinline
1290	loop_init (EV_P_ unsigned int flags)	1368	loop_init (EV_P_ unsigned int flags)
1291	{	1369	{
1292	if (!backend)	1370	if (!backend)
1293	{	1371	{
		1372	#if EV_USE_REALTIME
		1373	if (!have_realtime)
		1374	{
		1375	struct timespec ts;
		1376
		1377	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1378	have_realtime = 1;
		1379	}
		1380	#endif
		1381
1294	#if EV_USE_MONOTONIC	1382	#if EV_USE_MONOTONIC
		1383	if (!have_monotonic)
1295	{	1384	{
1296	struct timespec ts;	1385	struct timespec ts;
		1386
1297	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1387	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1298	have_monotonic = 1;	1388	have_monotonic = 1;
1299	}	1389	}
1300	#endif	1390	#endif
1301		1391
1302	ev_rt_now = ev_time ();	1392	ev_rt_now = ev_time ();
1303	mn_now = get_clock ();	1393	mn_now = get_clock ();
1304	now_floor = mn_now;	1394	now_floor = mn_now;
…		…
1341	#endif	1431	#endif
1342	#if EV_USE_SELECT	1432	#if EV_USE_SELECT
1343	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1433	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1344	#endif	1434	#endif
1345		1435
		1436	ev_prepare_init (&pending_w, pendingcb);
		1437
1346	ev_init (&pipeev, pipecb);	1438	ev_init (&pipe_w, pipecb);
1347	ev_set_priority (&pipeev, EV_MAXPRI);	1439	ev_set_priority (&pipe_w, EV_MAXPRI);
1348	}	1440	}
1349	}	1441	}
1350		1442
		1443	/* free up a loop structure */
1351	static void noinline	1444	static void noinline
1352	loop_destroy (EV_P)	1445	loop_destroy (EV_P)
1353	{	1446	{
1354	int i;	1447	int i;
1355		1448
1356	if (ev_is_active (&pipeev))	1449	if (ev_is_active (&pipe_w))
1357	{	1450	{
1358	ev_ref (EV_A); /* signal watcher */	1451	ev_ref (EV_A); /* signal watcher */
1359	ev_io_stop (EV_A_ &pipeev);	1452	ev_io_stop (EV_A_ &pipe_w);
1360		1453
1361	#if EV_USE_EVENTFD	1454	#if EV_USE_EVENTFD
1362	if (evfd >= 0)	1455	if (evfd >= 0)
1363	close (evfd);	1456	close (evfd);
1364	#endif	1457	#endif
…		…
1403	}	1496	}
1404		1497
1405	ev_free (anfds); anfdmax = 0;	1498	ev_free (anfds); anfdmax = 0;
1406		1499
1407	/* have to use the microsoft-never-gets-it-right macro */	1500	/* have to use the microsoft-never-gets-it-right macro */
		1501	array_free (rfeed, EMPTY);
1408	array_free (fdchange, EMPTY);	1502	array_free (fdchange, EMPTY);
1409	array_free (timer, EMPTY);	1503	array_free (timer, EMPTY);
1410	#if EV_PERIODIC_ENABLE	1504	#if EV_PERIODIC_ENABLE
1411	array_free (periodic, EMPTY);	1505	array_free (periodic, EMPTY);
1412	#endif	1506	#endif
…		…
1421		1515
1422	backend = 0;	1516	backend = 0;
1423	}	1517	}
1424		1518
1425	#if EV_USE_INOTIFY	1519	#if EV_USE_INOTIFY
1426	void inline_size infy_fork (EV_P);	1520	inline_size void infy_fork (EV_P);
1427	#endif	1521	#endif
1428		1522
1429	void inline_size	1523	inline_size void
1430	loop_fork (EV_P)	1524	loop_fork (EV_P)
1431	{	1525	{
1432	#if EV_USE_PORT	1526	#if EV_USE_PORT
1433	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1527	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1434	#endif	1528	#endif
…		…
1440	#endif	1534	#endif
1441	#if EV_USE_INOTIFY	1535	#if EV_USE_INOTIFY
1442	infy_fork (EV_A);	1536	infy_fork (EV_A);
1443	#endif	1537	#endif
1444		1538
1445	if (ev_is_active (&pipeev))	1539	if (ev_is_active (&pipe_w))
1446	{	1540	{
1447	/* this "locks" the handlers against writing to the pipe */	1541	/* this "locks" the handlers against writing to the pipe */
1448	/* while we modify the fd vars */	1542	/* while we modify the fd vars */
1449	gotsig = 1;	1543	gotsig = 1;
1450	#if EV_ASYNC_ENABLE	1544	#if EV_ASYNC_ENABLE
1451	gotasync = 1;	1545	gotasync = 1;
1452	#endif	1546	#endif
1453		1547
1454	ev_ref (EV_A);	1548	ev_ref (EV_A);
1455	ev_io_stop (EV_A_ &pipeev);	1549	ev_io_stop (EV_A_ &pipe_w);
1456		1550
1457	#if EV_USE_EVENTFD	1551	#if EV_USE_EVENTFD
1458	if (evfd >= 0)	1552	if (evfd >= 0)
1459	close (evfd);	1553	close (evfd);
1460	#endif	1554	#endif
…		…
1465	close (evpipe [1]);	1559	close (evpipe [1]);
1466	}	1560	}
1467		1561
1468	evpipe_init (EV_A);	1562	evpipe_init (EV_A);
1469	/* now iterate over everything, in case we missed something */	1563	/* now iterate over everything, in case we missed something */
1470	pipecb (EV_A_ &pipeev, EV_READ);	1564	pipecb (EV_A_ &pipe_w, EV_READ);
1471	}	1565	}
1472		1566
1473	postfork = 0;	1567	postfork = 0;
1474	}	1568	}
1475		1569
…		…
1505		1599
1506	#if EV_VERIFY	1600	#if EV_VERIFY
1507	static void noinline	1601	static void noinline
1508	verify_watcher (EV_P_ W w)	1602	verify_watcher (EV_P_ W w)
1509	{	1603	{
1510	assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));	1604	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1511		1605
1512	if (w->pending)	1606	if (w->pending)
1513	assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));	1607	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1514	}	1608	}
1515		1609
1516	static void noinline	1610	static void noinline
1517	verify_heap (EV_P_ ANHE *heap, int N)	1611	verify_heap (EV_P_ ANHE *heap, int N)
1518	{	1612	{
1519	int i;	1613	int i;
1520		1614
1521	for (i = HEAP0; i < N + HEAP0; ++i)	1615	for (i = HEAP0; i < N + HEAP0; ++i)
1522	{	1616	{
1523	assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));	1617	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])));	1618	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]))));	1619	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1526		1620
1527	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));	1621	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1528	}	1622	}
1529	}	1623	}
1530		1624
1531	static void noinline	1625	static void noinline
1532	array_verify (EV_P_ W *ws, int cnt)	1626	array_verify (EV_P_ W *ws, int cnt)
1533	{	1627	{
1534	while (cnt--)	1628	while (cnt--)
1535	{	1629	{
1536	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));	1630	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1537	verify_watcher (EV_A_ ws [cnt]);	1631	verify_watcher (EV_A_ ws [cnt]);
1538	}	1632	}
1539	}	1633	}
1540	#endif	1634	#endif
1541		1635
…		…
1548		1642
1549	assert (activecnt >= -1);	1643	assert (activecnt >= -1);
1550		1644
1551	assert (fdchangemax >= fdchangecnt);	1645	assert (fdchangemax >= fdchangecnt);
1552	for (i = 0; i < fdchangecnt; ++i)	1646	for (i = 0; i < fdchangecnt; ++i)
1553	assert (("negative fd in fdchanges", fdchanges [i] >= 0));	1647	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1554		1648
1555	assert (anfdmax >= 0);	1649	assert (anfdmax >= 0);
1556	for (i = 0; i < anfdmax; ++i)	1650	for (i = 0; i < anfdmax; ++i)
1557	for (w = anfds [i].head; w; w = w->next)	1651	for (w = anfds [i].head; w; w = w->next)
1558	{	1652	{
1559	verify_watcher (EV_A_ (W)w);	1653	verify_watcher (EV_A_ (W)w);
1560	assert (("inactive fd watcher on anfd list", ev_active (w) == 1));	1654	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));	1655	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1562	}	1656	}
1563		1657
1564	assert (timermax >= timercnt);	1658	assert (timermax >= timercnt);
1565	verify_heap (EV_A_ timers, timercnt);	1659	verify_heap (EV_A_ timers, timercnt);
1566		1660
…		…
1671	ev_invoke (EV_P_ void *w, int revents)	1765	ev_invoke (EV_P_ void *w, int revents)
1672	{	1766	{
1673	EV_CB_INVOKE ((W)w, revents);	1767	EV_CB_INVOKE ((W)w, revents);
1674	}	1768	}
1675		1769
1676	void inline_speed	1770	inline_speed void
1677	call_pending (EV_P)	1771	call_pending (EV_P)
1678	{	1772	{
1679	int pri;	1773	int pri;
1680		1774
1681	for (pri = NUMPRI; pri--; )	1775	for (pri = NUMPRI; pri--; )
1682	while (pendingcnt [pri])	1776	while (pendingcnt [pri])
1683	{	1777	{
1684	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1778	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1685		1779
1686	if (expect_true (p->w))
1687	{
1688	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1780	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1781	/* ^ this is no longer true, as pending_w could be here */
1689		1782
1690	p->w->pending = 0;	1783	p->w->pending = 0;
1691	EV_CB_INVOKE (p->w, p->events);	1784	EV_CB_INVOKE (p->w, p->events);
1692	EV_FREQUENT_CHECK;	1785	EV_FREQUENT_CHECK;
1693	}
1694	}	1786	}
1695	}	1787	}
1696		1788
1697	#if EV_IDLE_ENABLE	1789	#if EV_IDLE_ENABLE
1698	void inline_size	1790	/* make idle watchers pending. this handles the "call-idle */
		1791	/* only when higher priorities are idle" logic */
		1792	inline_size void
1699	idle_reify (EV_P)	1793	idle_reify (EV_P)
1700	{	1794	{
1701	if (expect_false (idleall))	1795	if (expect_false (idleall))
1702	{	1796	{
1703	int pri;	1797	int pri;
…		…
1715	}	1809	}
1716	}	1810	}
1717	}	1811	}
1718	#endif	1812	#endif
1719		1813
1720	void inline_size	1814	/* make timers pending */
		1815	inline_size void
1721	timers_reify (EV_P)	1816	timers_reify (EV_P)
1722	{	1817	{
1723	EV_FREQUENT_CHECK;	1818	EV_FREQUENT_CHECK;
1724		1819
1725	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	1820	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1726	{	1821	{
1727	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	1822	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	{	1823	{
		1824	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1825
		1826	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		1827
		1828	/* first reschedule or stop timer */
		1829	if (w->repeat)
		1830	{
1734	ev_at (w) += w->repeat;	1831	ev_at (w) += w->repeat;
1735	if (ev_at (w) < mn_now)	1832	if (ev_at (w) < mn_now)
1736	ev_at (w) = mn_now;	1833	ev_at (w) = mn_now;
1737		1834
1738	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1835	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1739		1836
1740	ANHE_at_cache (timers [HEAP0]);	1837	ANHE_at_cache (timers [HEAP0]);
1741	downheap (timers, timercnt, HEAP0);	1838	downheap (timers, timercnt, HEAP0);
		1839	}
		1840	else
		1841	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1842
		1843	EV_FREQUENT_CHECK;
		1844	feed_reverse (EV_A_ (W)w);
1742	}	1845	}
1743	else	1846	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1744	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1745		1847
1746	EV_FREQUENT_CHECK;
1747	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1848	feed_reverse_done (EV_A_ EV_TIMEOUT);
1748	}	1849	}
1749	}	1850	}
1750		1851
1751	#if EV_PERIODIC_ENABLE	1852	#if EV_PERIODIC_ENABLE
1752	void inline_size	1853	/* make periodics pending */
		1854	inline_size void
1753	periodics_reify (EV_P)	1855	periodics_reify (EV_P)
1754	{	1856	{
1755	EV_FREQUENT_CHECK;	1857	EV_FREQUENT_CHECK;
1756		1858
1757	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	1859	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1758	{	1860	{
1759	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	1861	int feed_count = 0;
1760		1862
1761	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	1863	do
1762
1763	/* first reschedule or stop timer */
1764	if (w->reschedule_cb)
1765	{	1864	{
		1865	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1866
		1867	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		1868
		1869	/* first reschedule or stop timer */
		1870	if (w->reschedule_cb)
		1871	{
1766	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1872	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1767		1873
1768	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));	1874	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1769		1875
1770	ANHE_at_cache (periodics [HEAP0]);	1876	ANHE_at_cache (periodics [HEAP0]);
1771	downheap (periodics, periodiccnt, HEAP0);	1877	downheap (periodics, periodiccnt, HEAP0);
		1878	}
		1879	else if (w->interval)
		1880	{
		1881	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1882	/* if next trigger time is not sufficiently in the future, put it there */
		1883	/* this might happen because of floating point inexactness */
		1884	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1885	{
		1886	ev_at (w) += w->interval;
		1887
		1888	/* if interval is unreasonably low we might still have a time in the past */
		1889	/* so correct this. this will make the periodic very inexact, but the user */
		1890	/* has effectively asked to get triggered more often than possible */
		1891	if (ev_at (w) < ev_rt_now)
		1892	ev_at (w) = ev_rt_now;
		1893	}
		1894
		1895	ANHE_at_cache (periodics [HEAP0]);
		1896	downheap (periodics, periodiccnt, HEAP0);
		1897	}
		1898	else
		1899	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1900
		1901	EV_FREQUENT_CHECK;
		1902	feed_reverse (EV_A_ (W)w);
1772	}	1903	}
1773	else if (w->interval)	1904	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		1905
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);	1906	feed_reverse_done (EV_A_ EV_PERIODIC);
1797	}	1907	}
1798	}	1908	}
1799		1909
		1910	/* simply recalculate all periodics */
		1911	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1800	static void noinline	1912	static void noinline
1801	periodics_reschedule (EV_P)	1913	periodics_reschedule (EV_P)
1802	{	1914	{
1803	int i;	1915	int i;
1804		1916
…		…
1817		1929
1818	reheap (periodics, periodiccnt);	1930	reheap (periodics, periodiccnt);
1819	}	1931	}
1820	#endif	1932	#endif
1821		1933
1822	void inline_speed	1934	/* adjust all timers by a given offset */
		1935	static void noinline
		1936	timers_reschedule (EV_P_ ev_tstamp adjust)
		1937	{
		1938	int i;
		1939
		1940	for (i = 0; i < timercnt; ++i)
		1941	{
		1942	ANHE *he = timers + i + HEAP0;
		1943	ANHE_w (*he)->at += adjust;
		1944	ANHE_at_cache (*he);
		1945	}
		1946	}
		1947
		1948	/* fetch new monotonic and realtime times from the kernel */
		1949	/* also detetc if there was a timejump, and act accordingly */
		1950	inline_speed void
1823	time_update (EV_P_ ev_tstamp max_block)	1951	time_update (EV_P_ ev_tstamp max_block)
1824	{	1952	{
1825	int i;	1953	int i;
1826		1954
1827	#if EV_USE_MONOTONIC	1955	#if EV_USE_MONOTONIC
…		…
1860	ev_rt_now = ev_time ();	1988	ev_rt_now = ev_time ();
1861	mn_now = get_clock ();	1989	mn_now = get_clock ();
1862	now_floor = mn_now;	1990	now_floor = mn_now;
1863	}	1991	}
1864		1992
		1993	/* no timer adjustment, as the monotonic clock doesn't jump */
		1994	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1865	# if EV_PERIODIC_ENABLE	1995	# if EV_PERIODIC_ENABLE
1866	periodics_reschedule (EV_A);	1996	periodics_reschedule (EV_A);
1867	# endif	1997	# endif
1868	/* no timer adjustment, as the monotonic clock doesn't jump */
1869	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1870	}	1998	}
1871	else	1999	else
1872	#endif	2000	#endif
1873	{	2001	{
1874	ev_rt_now = ev_time ();	2002	ev_rt_now = ev_time ();
1875		2003
1876	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2004	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1877	{	2005	{
		2006	/* adjust timers. this is easy, as the offset is the same for all of them */
		2007	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1878	#if EV_PERIODIC_ENABLE	2008	#if EV_PERIODIC_ENABLE
1879	periodics_reschedule (EV_A);	2009	periodics_reschedule (EV_A);
1880	#endif	2010	#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	}	2011	}
1889		2012
1890	mn_now = ev_rt_now;	2013	mn_now = ev_rt_now;
1891	}	2014	}
1892	}
1893
1894	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	}	2015	}
1911		2016
1912	static int loop_done;	2017	static int loop_done;
1913		2018
1914	void	2019	void
…		…
1948	{	2053	{
1949	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2054	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1950	call_pending (EV_A);	2055	call_pending (EV_A);
1951	}	2056	}
1952		2057
1953	if (expect_false (!activecnt))
1954	break;
1955
1956	/* we might have forked, so reify kernel state if necessary */	2058	/* we might have forked, so reify kernel state if necessary */
1957	if (expect_false (postfork))	2059	if (expect_false (postfork))
1958	loop_fork (EV_A);	2060	loop_fork (EV_A);
1959		2061
1960	/* update fd-related kernel structures */	2062	/* update fd-related kernel structures */
…		…
2039	ev_unloop (EV_P_ int how)	2141	ev_unloop (EV_P_ int how)
2040	{	2142	{
2041	loop_done = how;	2143	loop_done = how;
2042	}	2144	}
2043		2145
		2146	void
		2147	ev_ref (EV_P)
		2148	{
		2149	++activecnt;
		2150	}
		2151
		2152	void
		2153	ev_unref (EV_P)
		2154	{
		2155	--activecnt;
		2156	}
		2157
		2158	void
		2159	ev_now_update (EV_P)
		2160	{
		2161	time_update (EV_A_ 1e100);
		2162	}
		2163
		2164	void
		2165	ev_suspend (EV_P)
		2166	{
		2167	ev_now_update (EV_A);
		2168	}
		2169
		2170	void
		2171	ev_resume (EV_P)
		2172	{
		2173	ev_tstamp mn_prev = mn_now;
		2174
		2175	ev_now_update (EV_A);
		2176	timers_reschedule (EV_A_ mn_now - mn_prev);
		2177	#if EV_PERIODIC_ENABLE
		2178	/* TODO: really do this? */
		2179	periodics_reschedule (EV_A);
		2180	#endif
		2181	}
		2182
2044	/*****************************************************************************/	2183	/*****************************************************************************/
		2184	/* singly-linked list management, used when the expected list length is short */
2045		2185
2046	void inline_size	2186	inline_size void
2047	wlist_add (WL *head, WL elem)	2187	wlist_add (WL *head, WL elem)
2048	{	2188	{
2049	elem->next = *head;	2189	elem->next = *head;
2050	*head = elem;	2190	*head = elem;
2051	}	2191	}
2052		2192
2053	void inline_size	2193	inline_size void
2054	wlist_del (WL *head, WL elem)	2194	wlist_del (WL *head, WL elem)
2055	{	2195	{
2056	while (*head)	2196	while (*head)
2057	{	2197	{
2058	if (*head == elem)	2198	if (*head == elem)
…		…
2063		2203
2064	head = &(*head)->next;	2204	head = &(*head)->next;
2065	}	2205	}
2066	}	2206	}
2067		2207
2068	void inline_speed	2208	/* internal, faster, version of ev_clear_pending */
		2209	inline_speed void
2069	clear_pending (EV_P_ W w)	2210	clear_pending (EV_P_ W w)
2070	{	2211	{
2071	if (w->pending)	2212	if (w->pending)
2072	{	2213	{
2073	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2214	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2074	w->pending = 0;	2215	w->pending = 0;
2075	}	2216	}
2076	}	2217	}
2077		2218
2078	int	2219	int
…		…
2082	int pending = w_->pending;	2223	int pending = w_->pending;
2083		2224
2084	if (expect_true (pending))	2225	if (expect_true (pending))
2085	{	2226	{
2086	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2227	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2228	p->w = (W)&pending_w;
2087	w_->pending = 0;	2229	w_->pending = 0;
2088	p->w = 0;
2089	return p->events;	2230	return p->events;
2090	}	2231	}
2091	else	2232	else
2092	return 0;	2233	return 0;
2093	}	2234	}
2094		2235
2095	void inline_size	2236	inline_size void
2096	pri_adjust (EV_P_ W w)	2237	pri_adjust (EV_P_ W w)
2097	{	2238	{
2098	int pri = w->priority;	2239	int pri = w->priority;
2099	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2240	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2100	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2241	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2101	w->priority = pri;	2242	w->priority = pri;
2102	}	2243	}
2103		2244
2104	void inline_speed	2245	inline_speed void
2105	ev_start (EV_P_ W w, int active)	2246	ev_start (EV_P_ W w, int active)
2106	{	2247	{
2107	pri_adjust (EV_A_ w);	2248	pri_adjust (EV_A_ w);
2108	w->active = active;	2249	w->active = active;
2109	ev_ref (EV_A);	2250	ev_ref (EV_A);
2110	}	2251	}
2111		2252
2112	void inline_size	2253	inline_size void
2113	ev_stop (EV_P_ W w)	2254	ev_stop (EV_P_ W w)
2114	{	2255	{
2115	ev_unref (EV_A);	2256	ev_unref (EV_A);
2116	w->active = 0;	2257	w->active = 0;
2117	}	2258	}
…		…
2124	int fd = w->fd;	2265	int fd = w->fd;
2125		2266
2126	if (expect_false (ev_is_active (w)))	2267	if (expect_false (ev_is_active (w)))
2127	return;	2268	return;
2128		2269
2129	assert (("ev_io_start called with negative fd", fd >= 0));	2270	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))));	2271	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2131		2272
2132	EV_FREQUENT_CHECK;	2273	EV_FREQUENT_CHECK;
2133		2274
2134	ev_start (EV_A_ (W)w, 1);	2275	ev_start (EV_A_ (W)w, 1);
2135	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2276	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2136	wlist_add (&anfds[fd].head, (WL)w);	2277	wlist_add (&anfds[fd].head, (WL)w);
2137		2278
2138	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2279	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
2139	w->events &= ~EV_IOFDSET;	2280	w->events &= ~EV__IOFDSET;
2140		2281
2141	EV_FREQUENT_CHECK;	2282	EV_FREQUENT_CHECK;
2142	}	2283	}
2143		2284
2144	void noinline	2285	void noinline
…		…
2146	{	2287	{
2147	clear_pending (EV_A_ (W)w);	2288	clear_pending (EV_A_ (W)w);
2148	if (expect_false (!ev_is_active (w)))	2289	if (expect_false (!ev_is_active (w)))
2149	return;	2290	return;
2150		2291
2151	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2292	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2152		2293
2153	EV_FREQUENT_CHECK;	2294	EV_FREQUENT_CHECK;
2154		2295
2155	wlist_del (&anfds[w->fd].head, (WL)w);	2296	wlist_del (&anfds[w->fd].head, (WL)w);
2156	ev_stop (EV_A_ (W)w);	2297	ev_stop (EV_A_ (W)w);
…		…
2166	if (expect_false (ev_is_active (w)))	2307	if (expect_false (ev_is_active (w)))
2167	return;	2308	return;
2168		2309
2169	ev_at (w) += mn_now;	2310	ev_at (w) += mn_now;
2170		2311
2171	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2312	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2172		2313
2173	EV_FREQUENT_CHECK;	2314	EV_FREQUENT_CHECK;
2174		2315
2175	++timercnt;	2316	++timercnt;
2176	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);	2317	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
…		…
2179	ANHE_at_cache (timers [ev_active (w)]);	2320	ANHE_at_cache (timers [ev_active (w)]);
2180	upheap (timers, ev_active (w));	2321	upheap (timers, ev_active (w));
2181		2322
2182	EV_FREQUENT_CHECK;	2323	EV_FREQUENT_CHECK;
2183		2324
2184	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2325	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2185	}	2326	}
2186		2327
2187	void noinline	2328	void noinline
2188	ev_timer_stop (EV_P_ ev_timer *w)	2329	ev_timer_stop (EV_P_ ev_timer *w)
2189	{	2330	{
…		…
2194	EV_FREQUENT_CHECK;	2335	EV_FREQUENT_CHECK;
2195		2336
2196	{	2337	{
2197	int active = ev_active (w);	2338	int active = ev_active (w);
2198		2339
2199	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2340	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2200		2341
2201	--timercnt;	2342	--timercnt;
2202		2343
2203	if (expect_true (active < timercnt + HEAP0))	2344	if (expect_true (active < timercnt + HEAP0))
2204	{	2345	{
…		…
2248		2389
2249	if (w->reschedule_cb)	2390	if (w->reschedule_cb)
2250	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2391	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2251	else if (w->interval)	2392	else if (w->interval)
2252	{	2393	{
2253	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2394	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2254	/* this formula differs from the one in periodic_reify because we do not always round up */	2395	/* this formula differs from the one in periodic_reify because we do not always round up */
2255	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2396	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2256	}	2397	}
2257	else	2398	else
2258	ev_at (w) = w->offset;	2399	ev_at (w) = w->offset;
…		…
2266	ANHE_at_cache (periodics [ev_active (w)]);	2407	ANHE_at_cache (periodics [ev_active (w)]);
2267	upheap (periodics, ev_active (w));	2408	upheap (periodics, ev_active (w));
2268		2409
2269	EV_FREQUENT_CHECK;	2410	EV_FREQUENT_CHECK;
2270		2411
2271	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2412	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2272	}	2413	}
2273		2414
2274	void noinline	2415	void noinline
2275	ev_periodic_stop (EV_P_ ev_periodic *w)	2416	ev_periodic_stop (EV_P_ ev_periodic *w)
2276	{	2417	{
…		…
2281	EV_FREQUENT_CHECK;	2422	EV_FREQUENT_CHECK;
2282		2423
2283	{	2424	{
2284	int active = ev_active (w);	2425	int active = ev_active (w);
2285		2426
2286	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2427	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2287		2428
2288	--periodiccnt;	2429	--periodiccnt;
2289		2430
2290	if (expect_true (active < periodiccnt + HEAP0))	2431	if (expect_true (active < periodiccnt + HEAP0))
2291	{	2432	{
…		…
2314		2455
2315	void noinline	2456	void noinline
2316	ev_signal_start (EV_P_ ev_signal *w)	2457	ev_signal_start (EV_P_ ev_signal *w)
2317	{	2458	{
2318	#if EV_MULTIPLICITY	2459	#if EV_MULTIPLICITY
2319	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2460	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2320	#endif	2461	#endif
2321	if (expect_false (ev_is_active (w)))	2462	if (expect_false (ev_is_active (w)))
2322	return;	2463	return;
2323		2464
2324	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2465	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2325		2466
2326	evpipe_init (EV_A);	2467	evpipe_init (EV_A);
2327		2468
2328	EV_FREQUENT_CHECK;	2469	EV_FREQUENT_CHECK;
2329		2470
…		…
2380		2521
2381	void	2522	void
2382	ev_child_start (EV_P_ ev_child *w)	2523	ev_child_start (EV_P_ ev_child *w)
2383	{	2524	{
2384	#if EV_MULTIPLICITY	2525	#if EV_MULTIPLICITY
2385	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2526	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2386	#endif	2527	#endif
2387	if (expect_false (ev_is_active (w)))	2528	if (expect_false (ev_is_active (w)))
2388	return;	2529	return;
2389		2530
2390	EV_FREQUENT_CHECK;	2531	EV_FREQUENT_CHECK;
…		…
2415	# ifdef _WIN32	2556	# ifdef _WIN32
2416	# undef lstat	2557	# undef lstat
2417	# define lstat(a,b) _stati64 (a,b)	2558	# define lstat(a,b) _stati64 (a,b)
2418	# endif	2559	# endif
2419		2560
2420	#define DEF_STAT_INTERVAL 5.0074891	2561	#define DEF_STAT_INTERVAL 5.0074891
		2562	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2421	#define MIN_STAT_INTERVAL 0.1074891	2563	#define MIN_STAT_INTERVAL 0.1074891
2422		2564
2423	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2565	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2424		2566
2425	#if EV_USE_INOTIFY	2567	#if EV_USE_INOTIFY
2426	# define EV_INOTIFY_BUFSIZE 8192	2568	# define EV_INOTIFY_BUFSIZE 8192
…		…
2430	{	2572	{
2431	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);	2573	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2432		2574
2433	if (w->wd < 0)	2575	if (w->wd < 0)
2434	{	2576	{
		2577	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2435	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2578	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2436		2579
2437	/* monitor some parent directory for speedup hints */	2580	/* monitor some parent directory for speedup hints */
2438	/* note that exceeding the hardcoded path limit is not a correctness issue, */	2581	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2439	/* but an efficiency issue only */	2582	/* but an efficiency issue only */
2440	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2583	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
…		…
2447	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2590	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2448	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2591	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2449		2592
2450	char *pend = strrchr (path, '/');	2593	char *pend = strrchr (path, '/');
2451		2594
2452	if (!pend)	2595	if (!pend || pend == path)
2453	break; /* whoops, no '/', complain to your admin */	2596	break;
2454		2597
2455	*pend = 0;	2598	*pend = 0;
2456	w->wd = inotify_add_watch (fs_fd, path, mask);	2599	w->wd = inotify_add_watch (fs_fd, path, mask);
2457	}	2600	}
2458	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2601	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2459	}	2602	}
2460	}	2603	}
2461	else
2462	todo, on nfs etc., we need to poll every 60s or so
2463	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2464		2604
2465	if (w->wd >= 0)	2605	if (w->wd >= 0)
		2606	{
2466	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2607	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2608
		2609	/* now local changes will be tracked by inotify, but remote changes won't */
		2610	/* unless the filesystem it known to be local, we therefore still poll */
		2611	/* also do poll on <2.6.25, but with normal frequency */
		2612	struct statfs sfs;
		2613
		2614	if (fs_2625 && !statfs (w->path, &sfs))
		2615	if (sfs.f_type == 0x1373 /* devfs */
		2616	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2617	|| sfs.f_type == 0x3153464a /* jfs */
		2618	|| sfs.f_type == 0x52654973 /* reiser3 */
		2619	|| sfs.f_type == 0x01021994 /* tempfs */
		2620	|| sfs.f_type == 0x58465342 /* xfs */)
		2621	return;
		2622
		2623	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2624	ev_timer_again (EV_A_ &w->timer);
		2625	}
2467	}	2626	}
2468		2627
2469	static void noinline	2628	static void noinline
2470	infy_del (EV_P_ ev_stat *w)	2629	infy_del (EV_P_ ev_stat *w)
2471	{	2630	{
…		…
2501		2660
2502	if (w->wd == wd || wd == -1)	2661	if (w->wd == wd || wd == -1)
2503	{	2662	{
2504	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2663	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2505	{	2664	{
		2665	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2506	w->wd = -1;	2666	w->wd = -1;
2507	infy_add (EV_A_ w); /* re-add, no matter what */	2667	infy_add (EV_A_ w); /* re-add, no matter what */
2508	}	2668	}
2509		2669
2510	stat_timer_cb (EV_A_ &w->timer, 0);	2670	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2523		2683
2524	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2684	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2525	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2685	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2526	}	2686	}
2527		2687
2528	void inline_size	2688	inline_size void
2529	infy_init (EV_P)	2689	check_2625 (EV_P)
2530	{	2690	{
2531	if (fs_fd != -2)
2532	return;
2533
2534	/* kernels < 2.6.25 are borked	2691	/* kernels < 2.6.25 are borked
2535	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html	2692	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2536	*/	2693	*/
2537	{
2538	struct utsname buf;	2694	struct utsname buf;
2539	int major, minor, micro;	2695	int major, minor, micro;
2540		2696
2541	fs_fd = -1;
2542
2543	if (uname (&buf))	2697	if (uname (&buf))
2544	return;	2698	return;
2545		2699
2546	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)	2700	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2547	return;	2701	return;
2548		2702
2549	if (major < 2	2703	if (major < 2
2550	|| (major == 2 && minor < 6)	2704	|| (major == 2 && minor < 6)
2551	|| (major == 2 && minor == 6 && micro < 25))	2705	|| (major == 2 && minor == 6 && micro < 25))
2552	return;	2706	return;
2553	}	2707
		2708	fs_2625 = 1;
		2709	}
		2710
		2711	inline_size void
		2712	infy_init (EV_P)
		2713	{
		2714	if (fs_fd != -2)
		2715	return;
		2716
		2717	fs_fd = -1;
		2718
		2719	check_2625 (EV_A);
2554		2720
2555	fs_fd = inotify_init ();	2721	fs_fd = inotify_init ();
2556		2722
2557	if (fs_fd >= 0)	2723	if (fs_fd >= 0)
2558	{	2724	{
…		…
2560	ev_set_priority (&fs_w, EV_MAXPRI);	2726	ev_set_priority (&fs_w, EV_MAXPRI);
2561	ev_io_start (EV_A_ &fs_w);	2727	ev_io_start (EV_A_ &fs_w);
2562	}	2728	}
2563	}	2729	}
2564		2730
2565	void inline_size	2731	inline_size void
2566	infy_fork (EV_P)	2732	infy_fork (EV_P)
2567	{	2733	{
2568	int slot;	2734	int slot;
2569		2735
2570	if (fs_fd < 0)	2736	if (fs_fd < 0)
…		…
2586	w->wd = -1;	2752	w->wd = -1;
2587		2753
2588	if (fs_fd >= 0)	2754	if (fs_fd >= 0)
2589	infy_add (EV_A_ w); /* re-add, no matter what */	2755	infy_add (EV_A_ w); /* re-add, no matter what */
2590	else	2756	else
2591	ev_timer_start (EV_A_ &w->timer);	2757	ev_timer_again (EV_A_ &w->timer);
2592	}	2758	}
2593	}	2759	}
2594	}	2760	}
2595		2761
2596	#endif	2762	#endif
…		…
2651	ev_stat_start (EV_P_ ev_stat *w)	2817	ev_stat_start (EV_P_ ev_stat *w)
2652	{	2818	{
2653	if (expect_false (ev_is_active (w)))	2819	if (expect_false (ev_is_active (w)))
2654	return;	2820	return;
2655		2821
2656	/* since we use memcmp, we need to clear any padding data etc. */
2657	memset (&w->prev, 0, sizeof (ev_statdata));
2658	memset (&w->attr, 0, sizeof (ev_statdata));
2659
2660	ev_stat_stat (EV_A_ w);	2822	ev_stat_stat (EV_A_ w);
2661		2823
		2824	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2662	if (w->interval < MIN_STAT_INTERVAL)	2825	w->interval = MIN_STAT_INTERVAL;
2663	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2664		2826
2665	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2827	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2666	ev_set_priority (&w->timer, ev_priority (w));	2828	ev_set_priority (&w->timer, ev_priority (w));
2667		2829
2668	#if EV_USE_INOTIFY	2830	#if EV_USE_INOTIFY
2669	infy_init (EV_A);	2831	infy_init (EV_A);
2670		2832
2671	if (fs_fd >= 0)	2833	if (fs_fd >= 0)
2672	infy_add (EV_A_ w);	2834	infy_add (EV_A_ w);
2673	else	2835	else
2674	#endif	2836	#endif
2675	ev_timer_start (EV_A_ &w->timer);	2837	ev_timer_again (EV_A_ &w->timer);
2676		2838
2677	ev_start (EV_A_ (W)w, 1);	2839	ev_start (EV_A_ (W)w, 1);
2678		2840
2679	EV_FREQUENT_CHECK;	2841	EV_FREQUENT_CHECK;
2680	}	2842	}
…		…
2855	static void	3017	static void
2856	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)	3018	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2857	{	3019	{
2858	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));	3020	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2859		3021
		3022	ev_embed_stop (EV_A_ w);
		3023
2860	{	3024	{
2861	struct ev_loop *loop = w->other;	3025	struct ev_loop *loop = w->other;
2862		3026
2863	ev_loop_fork (EV_A);	3027	ev_loop_fork (EV_A);
		3028	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2864	}	3029	}
		3030
		3031	ev_embed_start (EV_A_ w);
2865	}	3032	}
2866		3033
2867	#if 0	3034	#if 0
2868	static void	3035	static void
2869	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3036	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
…		…
2878	if (expect_false (ev_is_active (w)))	3045	if (expect_false (ev_is_active (w)))
2879	return;	3046	return;
2880		3047
2881	{	3048	{
2882	struct ev_loop *loop = w->other;	3049	struct ev_loop *loop = w->other;
2883	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3050	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2884	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3051	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2885	}	3052	}
2886		3053
2887	EV_FREQUENT_CHECK;	3054	EV_FREQUENT_CHECK;
2888		3055
…		…
3071	ev_timer_set (&once->to, timeout, 0.);	3238	ev_timer_set (&once->to, timeout, 0.);
3072	ev_timer_start (EV_A_ &once->to);	3239	ev_timer_start (EV_A_ &once->to);
3073	}	3240	}
3074	}	3241	}
3075		3242
		3243	/*****************************************************************************/
		3244
		3245	#if EV_WALK_ENABLE
		3246	void
		3247	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3248	{
		3249	int i, j;
		3250	ev_watcher_list *wl, *wn;
		3251
		3252	if (types & (EV_IO | EV_EMBED))
		3253	for (i = 0; i < anfdmax; ++i)
		3254	for (wl = anfds [i].head; wl; )
		3255	{
		3256	wn = wl->next;
		3257
		3258	#if EV_EMBED_ENABLE
		3259	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3260	{
		3261	if (types & EV_EMBED)
		3262	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3263	}
		3264	else
		3265	#endif
		3266	#if EV_USE_INOTIFY
		3267	if (ev_cb ((ev_io *)wl) == infy_cb)
		3268	;
		3269	else
		3270	#endif
		3271	if ((ev_io *)wl != &pipe_w)
		3272	if (types & EV_IO)
		3273	cb (EV_A_ EV_IO, wl);
		3274
		3275	wl = wn;
		3276	}
		3277
		3278	if (types & (EV_TIMER | EV_STAT))
		3279	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3280	#if EV_STAT_ENABLE
		3281	/*TODO: timer is not always active*/
		3282	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3283	{
		3284	if (types & EV_STAT)
		3285	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3286	}
		3287	else
		3288	#endif
		3289	if (types & EV_TIMER)
		3290	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3291
		3292	#if EV_PERIODIC_ENABLE
		3293	if (types & EV_PERIODIC)
		3294	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3295	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3296	#endif
		3297
		3298	#if EV_IDLE_ENABLE
		3299	if (types & EV_IDLE)
		3300	for (j = NUMPRI; i--; )
		3301	for (i = idlecnt [j]; i--; )
		3302	cb (EV_A_ EV_IDLE, idles [j][i]);
		3303	#endif
		3304
		3305	#if EV_FORK_ENABLE
		3306	if (types & EV_FORK)
		3307	for (i = forkcnt; i--; )
		3308	if (ev_cb (forks [i]) != embed_fork_cb)
		3309	cb (EV_A_ EV_FORK, forks [i]);
		3310	#endif
		3311
		3312	#if EV_ASYNC_ENABLE
		3313	if (types & EV_ASYNC)
		3314	for (i = asynccnt; i--; )
		3315	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3316	#endif
		3317
		3318	if (types & EV_PREPARE)
		3319	for (i = preparecnt; i--; )
		3320	#if EV_EMBED_ENABLE
		3321	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3322	#endif
		3323	cb (EV_A_ EV_PREPARE, prepares [i]);
		3324
		3325	if (types & EV_CHECK)
		3326	for (i = checkcnt; i--; )
		3327	cb (EV_A_ EV_CHECK, checks [i]);
		3328
		3329	if (types & EV_SIGNAL)
		3330	for (i = 0; i < signalmax; ++i)
		3331	for (wl = signals [i].head; wl; )
		3332	{
		3333	wn = wl->next;
		3334	cb (EV_A_ EV_SIGNAL, wl);
		3335	wl = wn;
		3336	}
		3337
		3338	if (types & EV_CHILD)
		3339	for (i = EV_PID_HASHSIZE; i--; )
		3340	for (wl = childs [i]; wl; )
		3341	{
		3342	wn = wl->next;
		3343	cb (EV_A_ EV_CHILD, wl);
		3344	wl = wn;
		3345	}
		3346	/* EV_STAT 0x00001000 /* stat data changed */
		3347	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3348	}
		3349	#endif
		3350
3076	#if EV_MULTIPLICITY	3351	#if EV_MULTIPLICITY
3077	#include "ev_wrap.h"	3352	#include "ev_wrap.h"
3078	#endif	3353	#endif
3079		3354
3080	#ifdef __cplusplus	3355	#ifdef __cplusplus

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines