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Comparing libev/ev.c (file contents):
Revision 1.273 by root, Mon Nov 3 14:27:06 2008 UTC vs.
Revision 1.290 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
…		…
300		322
301	#if EV_SELECT_IS_WINSOCKET	323	#if EV_SELECT_IS_WINSOCKET
302	# include <winsock.h>	324	# include <winsock.h>
303	#endif	325	#endif
304		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
		339	#endif
		340
305	#if EV_USE_EVENTFD	341	#if EV_USE_EVENTFD
306	/* 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 */
307	# include <stdint.h>	343	# include <stdint.h>
308	# ifdef __cplusplus	344	# ifdef __cplusplus
309	extern "C" {	345	extern "C" {
…		…
368	typedef ev_watcher_time *WT;	404	typedef ev_watcher_time *WT;
369		405
370	#define ev_active(w) ((W)(w))->active	406	#define ev_active(w) ((W)(w))->active
371	#define ev_at(w) ((WT)(w))->at	407	#define ev_at(w) ((WT)(w))->at
372		408
373	#if EV_USE_MONOTONIC	409	#if EV_USE_REALTIME
374	/* sig_atomic_t is used to avoid per-thread variables or locking but still */	410	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
375	/* giving it a reasonably high chance of working on typical architetcures */	411	/* giving it a reasonably high chance of working on typical architetcures */
		412	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		413	#endif
		414
		415	#if EV_USE_MONOTONIC
376	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	416	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
377	#endif	417	#endif
378		418
379	#ifdef _WIN32	419	#ifdef _WIN32
380	# include "ev_win32.c"	420	# include "ev_win32.c"
…		…
445	#define ev_malloc(size) ev_realloc (0, (size))	485	#define ev_malloc(size) ev_realloc (0, (size))
446	#define ev_free(ptr) ev_realloc ((ptr), 0)	486	#define ev_free(ptr) ev_realloc ((ptr), 0)
447		487
448	/*****************************************************************************/	488	/*****************************************************************************/
449		489
		490	/* file descriptor info structure */
450	typedef struct	491	typedef struct
451	{	492	{
452	WL head;	493	WL head;
453	unsigned char events;	494	unsigned char events; /* the events watched for */
454	unsigned char reify;	495	unsigned char reify; /* flag set when this ANFD needs reification */
455	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */	496	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
456	unsigned char unused;	497	unsigned char unused;
457	#if EV_USE_EPOLL	498	#if EV_USE_EPOLL
458	unsigned int egen; /* generation counter to counter epoll bugs */	499	unsigned int egen; /* generation counter to counter epoll bugs */
459	#endif	500	#endif
460	#if EV_SELECT_IS_WINSOCKET	501	#if EV_SELECT_IS_WINSOCKET
461	SOCKET handle;	502	SOCKET handle;
462	#endif	503	#endif
463	} ANFD;	504	} ANFD;
464		505
		506	/* stores the pending event set for a given watcher */
465	typedef struct	507	typedef struct
466	{	508	{
467	W w;	509	W w;
468	int events;	510	int events; /* the pending event set for the given watcher */
469	} ANPENDING;	511	} ANPENDING;
470		512
471	#if EV_USE_INOTIFY	513	#if EV_USE_INOTIFY
472	/* hash table entry per inotify-id */	514	/* hash table entry per inotify-id */
473	typedef struct	515	typedef struct
…		…
476	} ANFS;	518	} ANFS;
477	#endif	519	#endif
478		520
479	/* Heap Entry */	521	/* Heap Entry */
480	#if EV_HEAP_CACHE_AT	522	#if EV_HEAP_CACHE_AT
		523	/* a heap element */
481	typedef struct {	524	typedef struct {
482	ev_tstamp at;	525	ev_tstamp at;
483	WT w;	526	WT w;
484	} ANHE;	527	} ANHE;
485		528
486	#define ANHE_w(he) (he).w /* access watcher, read-write */	529	#define ANHE_w(he) (he).w /* access watcher, read-write */
487	#define ANHE_at(he) (he).at /* access cached at, read-only */	530	#define ANHE_at(he) (he).at /* access cached at, read-only */
488	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */	531	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
489	#else	532	#else
		533	/* a heap element */
490	typedef WT ANHE;	534	typedef WT ANHE;
491		535
492	#define ANHE_w(he) (he)	536	#define ANHE_w(he) (he)
493	#define ANHE_at(he) (he)->at	537	#define ANHE_at(he) (he)->at
494	#define ANHE_at_cache(he)	538	#define ANHE_at_cache(he)
…		…
524		568
525	ev_tstamp	569	ev_tstamp
526	ev_time (void)	570	ev_time (void)
527	{	571	{
528	#if EV_USE_REALTIME	572	#if EV_USE_REALTIME
		573	if (expect_true (have_realtime))
		574	{
529	struct timespec ts;	575	struct timespec ts;
530	clock_gettime (CLOCK_REALTIME, &ts);	576	clock_gettime (CLOCK_REALTIME, &ts);
531	return ts.tv_sec + ts.tv_nsec * 1e-9;	577	return ts.tv_sec + ts.tv_nsec * 1e-9;
532	#else	578	}
		579	#endif
		580
533	struct timeval tv;	581	struct timeval tv;
534	gettimeofday (&tv, 0);	582	gettimeofday (&tv, 0);
535	return tv.tv_sec + tv.tv_usec * 1e-6;	583	return tv.tv_sec + tv.tv_usec * 1e-6;
536	#endif
537	}	584	}
538		585
539	ev_tstamp inline_size	586	inline_size ev_tstamp
540	get_clock (void)	587	get_clock (void)
541	{	588	{
542	#if EV_USE_MONOTONIC	589	#if EV_USE_MONOTONIC
543	if (expect_true (have_monotonic))	590	if (expect_true (have_monotonic))
544	{	591	{
…		…
589		636
590	/*****************************************************************************/	637	/*****************************************************************************/
591		638
592	#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 */
593		640
594	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
595	array_nextsize (int elem, int cur, int cnt)	644	array_nextsize (int elem, int cur, int cnt)
596	{	645	{
597	int ncur = cur + 1;	646	int ncur = cur + 1;
598		647
599	do	648	do
…		…
640	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	689	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
641	}	690	}
642	#endif	691	#endif
643		692
644	#define array_free(stem, idx) \	693	#define array_free(stem, idx) \
645	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
646		695
647	/*****************************************************************************/	696	/*****************************************************************************/
		697
		698	/* dummy callback for pending events */
		699	static void noinline
		700	pendingcb (EV_P_ ev_prepare *w, int revents)
		701	{
		702	}
648		703
649	void noinline	704	void noinline
650	ev_feed_event (EV_P_ void *w, int revents)	705	ev_feed_event (EV_P_ void *w, int revents)
651	{	706	{
652	W w_ = (W)w;	707	W w_ = (W)w;
…		…
661	pendings [pri][w_->pending - 1].w = w_;	716	pendings [pri][w_->pending - 1].w = w_;
662	pendings [pri][w_->pending - 1].events = revents;	717	pendings [pri][w_->pending - 1].events = revents;
663	}	718	}
664	}	719	}
665		720
666	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
667	queue_events (EV_P_ W *events, int eventcnt, int type)	737	queue_events (EV_P_ W *events, int eventcnt, int type)
668	{	738	{
669	int i;	739	int i;
670		740
671	for (i = 0; i < eventcnt; ++i)	741	for (i = 0; i < eventcnt; ++i)
672	ev_feed_event (EV_A_ events [i], type);	742	ev_feed_event (EV_A_ events [i], type);
673	}	743	}
674		744
675	/*****************************************************************************/	745	/*****************************************************************************/
676		746
677	void inline_speed	747	inline_speed void
678	fd_event (EV_P_ int fd, int revents)	748	fd_event (EV_P_ int fd, int revents)
679	{	749	{
680	ANFD *anfd = anfds + fd;	750	ANFD *anfd = anfds + fd;
681	ev_io *w;	751	ev_io *w;
682		752
…		…
694	{	764	{
695	if (fd >= 0 && fd < anfdmax)	765	if (fd >= 0 && fd < anfdmax)
696	fd_event (EV_A_ fd, revents);	766	fd_event (EV_A_ fd, revents);
697	}	767	}
698		768
699	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
700	fd_reify (EV_P)	772	fd_reify (EV_P)
701	{	773	{
702	int i;	774	int i;
703		775
704	for (i = 0; i < fdchangecnt; ++i)	776	for (i = 0; i < fdchangecnt; ++i)
…		…
719	#ifdef EV_FD_TO_WIN32_HANDLE	791	#ifdef EV_FD_TO_WIN32_HANDLE
720	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	792	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
721	#else	793	#else
722	anfd->handle = _get_osfhandle (fd);	794	anfd->handle = _get_osfhandle (fd);
723	#endif	795	#endif
724	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));
725	}	797	}
726	#endif	798	#endif
727		799
728	{	800	{
729	unsigned char o_events = anfd->events;	801	unsigned char o_events = anfd->events;
730	unsigned char o_reify = anfd->reify;	802	unsigned char o_reify = anfd->reify;
731		803
732	anfd->reify = 0;	804	anfd->reify = 0;
733	anfd->events = events;	805	anfd->events = events;
734		806
735	if (o_events != events || o_reify & EV_IOFDSET)	807	if (o_events != events || o_reify & EV__IOFDSET)
736	backend_modify (EV_A_ fd, o_events, events);	808	backend_modify (EV_A_ fd, o_events, events);
737	}	809	}
738	}	810	}
739		811
740	fdchangecnt = 0;	812	fdchangecnt = 0;
741	}	813	}
742		814
743	void inline_size	815	/* something about the given fd changed */
		816	inline_size void
744	fd_change (EV_P_ int fd, int flags)	817	fd_change (EV_P_ int fd, int flags)
745	{	818	{
746	unsigned char reify = anfds [fd].reify;	819	unsigned char reify = anfds [fd].reify;
747	anfds [fd].reify |= flags;	820	anfds [fd].reify |= flags;
748		821
…		…
752	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	825	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
753	fdchanges [fdchangecnt - 1] = fd;	826	fdchanges [fdchangecnt - 1] = fd;
754	}	827	}
755	}	828	}
756		829
757	void inline_speed	830	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		831	inline_speed void
758	fd_kill (EV_P_ int fd)	832	fd_kill (EV_P_ int fd)
759	{	833	{
760	ev_io *w;	834	ev_io *w;
761		835
762	while ((w = (ev_io *)anfds [fd].head))	836	while ((w = (ev_io *)anfds [fd].head))
…		…
764	ev_io_stop (EV_A_ w);	838	ev_io_stop (EV_A_ w);
765	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);
766	}	840	}
767	}	841	}
768		842
769	int inline_size	843	/* check whether the given fd is atcually valid, for error recovery */
		844	inline_size int
770	fd_valid (int fd)	845	fd_valid (int fd)
771	{	846	{
772	#ifdef _WIN32	847	#ifdef _WIN32
773	return _get_osfhandle (fd) != -1;	848	return _get_osfhandle (fd) != -1;
774	#else	849	#else
…		…
811	for (fd = 0; fd < anfdmax; ++fd)	886	for (fd = 0; fd < anfdmax; ++fd)
812	if (anfds [fd].events)	887	if (anfds [fd].events)
813	{	888	{
814	anfds [fd].events = 0;	889	anfds [fd].events = 0;
815	anfds [fd].emask = 0;	890	anfds [fd].emask = 0;
816	fd_change (EV_A_ fd, EV_IOFDSET | 1);	891	fd_change (EV_A_ fd, EV__IOFDSET | 1);
817	}	892	}
818	}	893	}
819		894
820	/*****************************************************************************/	895	/*****************************************************************************/
821		896
…		…
837	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	912	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
838	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)	913	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
839	#define UPHEAP_DONE(p,k) ((p) == (k))	914	#define UPHEAP_DONE(p,k) ((p) == (k))
840		915
841	/* away from the root */	916	/* away from the root */
842	void inline_speed	917	inline_speed void
843	downheap (ANHE *heap, int N, int k)	918	downheap (ANHE *heap, int N, int k)
844	{	919	{
845	ANHE he = heap [k];	920	ANHE he = heap [k];
846	ANHE *E = heap + N + HEAP0;	921	ANHE *E = heap + N + HEAP0;
847		922
…		…
887	#define HEAP0 1	962	#define HEAP0 1
888	#define HPARENT(k) ((k) >> 1)	963	#define HPARENT(k) ((k) >> 1)
889	#define UPHEAP_DONE(p,k) (!(p))	964	#define UPHEAP_DONE(p,k) (!(p))
890		965
891	/* away from the root */	966	/* away from the root */
892	void inline_speed	967	inline_speed void
893	downheap (ANHE *heap, int N, int k)	968	downheap (ANHE *heap, int N, int k)
894	{	969	{
895	ANHE he = heap [k];	970	ANHE he = heap [k];
896		971
897	for (;;)	972	for (;;)
…		…
917	ev_active (ANHE_w (he)) = k;	992	ev_active (ANHE_w (he)) = k;
918	}	993	}
919	#endif	994	#endif
920		995
921	/* towards the root */	996	/* towards the root */
922	void inline_speed	997	inline_speed void
923	upheap (ANHE *heap, int k)	998	upheap (ANHE *heap, int k)
924	{	999	{
925	ANHE he = heap [k];	1000	ANHE he = heap [k];
926		1001
927	for (;;)	1002	for (;;)
…		…
938		1013
939	heap [k] = he;	1014	heap [k] = he;
940	ev_active (ANHE_w (he)) = k;	1015	ev_active (ANHE_w (he)) = k;
941	}	1016	}
942		1017
943	void inline_size	1018	/* move an element suitably so it is in a correct place */
		1019	inline_size void
944	adjustheap (ANHE *heap, int N, int k)	1020	adjustheap (ANHE *heap, int N, int k)
945	{	1021	{
946	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]))
947	upheap (heap, k);	1023	upheap (heap, k);
948	else	1024	else
949	downheap (heap, N, k);	1025	downheap (heap, N, k);
950	}	1026	}
951		1027
952	/* 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 */
953	void inline_size	1029	inline_size void
954	reheap (ANHE *heap, int N)	1030	reheap (ANHE *heap, int N)
955	{	1031	{
956	int i;	1032	int i;
957		1033
958	/* 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 */
…		…
961	upheap (heap, i + HEAP0);	1037	upheap (heap, i + HEAP0);
962	}	1038	}
963		1039
964	/*****************************************************************************/	1040	/*****************************************************************************/
965		1041
		1042	/* associate signal watchers to a signal signal */
966	typedef struct	1043	typedef struct
967	{	1044	{
968	WL head;	1045	WL head;
969	EV_ATOMIC_T gotsig;	1046	EV_ATOMIC_T gotsig;
970	} ANSIG;	1047	} ANSIG;
…		…
974		1051
975	static EV_ATOMIC_T gotsig;	1052	static EV_ATOMIC_T gotsig;
976		1053
977	/*****************************************************************************/	1054	/*****************************************************************************/
978		1055
979	void inline_speed	1056	/* used to prepare libev internal fd's */
		1057	/* this is not fork-safe */
		1058	inline_speed void
980	fd_intern (int fd)	1059	fd_intern (int fd)
981	{	1060	{
982	#ifdef _WIN32	1061	#ifdef _WIN32
983	unsigned long arg = 1;	1062	unsigned long arg = 1;
984	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1063	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
989	}	1068	}
990		1069
991	static void noinline	1070	static void noinline
992	evpipe_init (EV_P)	1071	evpipe_init (EV_P)
993	{	1072	{
994	if (!ev_is_active (&pipeev))	1073	if (!ev_is_active (&pipe_w))
995	{	1074	{
996	#if EV_USE_EVENTFD	1075	#if EV_USE_EVENTFD
997	if ((evfd = eventfd (0, 0)) >= 0)	1076	if ((evfd = eventfd (0, 0)) >= 0)
998	{	1077	{
999	evpipe [0] = -1;	1078	evpipe [0] = -1;
1000	fd_intern (evfd);	1079	fd_intern (evfd);
1001	ev_io_set (&pipeev, evfd, EV_READ);	1080	ev_io_set (&pipe_w, evfd, EV_READ);
1002	}	1081	}
1003	else	1082	else
1004	#endif	1083	#endif
1005	{	1084	{
1006	while (pipe (evpipe))	1085	while (pipe (evpipe))
1007	ev_syserr ("(libev) error creating signal/async pipe");	1086	ev_syserr ("(libev) error creating signal/async pipe");
1008		1087
1009	fd_intern (evpipe [0]);	1088	fd_intern (evpipe [0]);
1010	fd_intern (evpipe [1]);	1089	fd_intern (evpipe [1]);
1011	ev_io_set (&pipeev, evpipe [0], EV_READ);	1090	ev_io_set (&pipe_w, evpipe [0], EV_READ);
1012	}	1091	}
1013		1092
1014	ev_io_start (EV_A_ &pipeev);	1093	ev_io_start (EV_A_ &pipe_w);
1015	ev_unref (EV_A); /* watcher should not keep loop alive */	1094	ev_unref (EV_A); /* watcher should not keep loop alive */
1016	}	1095	}
1017	}	1096	}
1018		1097
1019	void inline_size	1098	inline_size void
1020	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1099	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1021	{	1100	{
1022	if (!*flag)	1101	if (!*flag)
1023	{	1102	{
1024	int old_errno = errno; /* save errno because write might clobber it */	1103	int old_errno = errno; /* save errno because write might clobber it */
…		…
1037		1116
1038	errno = old_errno;	1117	errno = old_errno;
1039	}	1118	}
1040	}	1119	}
1041		1120
		1121	/* called whenever the libev signal pipe */
		1122	/* got some events (signal, async) */
1042	static void	1123	static void
1043	pipecb (EV_P_ ev_io *iow, int revents)	1124	pipecb (EV_P_ ev_io *iow, int revents)
1044	{	1125	{
1045	#if EV_USE_EVENTFD	1126	#if EV_USE_EVENTFD
1046	if (evfd >= 0)	1127	if (evfd >= 0)
…		…
1102	ev_feed_signal_event (EV_P_ int signum)	1183	ev_feed_signal_event (EV_P_ int signum)
1103	{	1184	{
1104	WL w;	1185	WL w;
1105		1186
1106	#if EV_MULTIPLICITY	1187	#if EV_MULTIPLICITY
1107	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));
1108	#endif	1189	#endif
1109		1190
1110	--signum;	1191	--signum;
1111		1192
1112	if (signum < 0 || signum >= signalmax)	1193	if (signum < 0 || signum >= signalmax)
…		…
1128		1209
1129	#ifndef WIFCONTINUED	1210	#ifndef WIFCONTINUED
1130	# define WIFCONTINUED(status) 0	1211	# define WIFCONTINUED(status) 0
1131	#endif	1212	#endif
1132		1213
1133	void inline_speed	1214	/* handle a single child status event */
		1215	inline_speed void
1134	child_reap (EV_P_ int chain, int pid, int status)	1216	child_reap (EV_P_ int chain, int pid, int status)
1135	{	1217	{
1136	ev_child *w;	1218	ev_child *w;
1137	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1219	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1138		1220
…		…
1151		1233
1152	#ifndef WCONTINUED	1234	#ifndef WCONTINUED
1153	# define WCONTINUED 0	1235	# define WCONTINUED 0
1154	#endif	1236	#endif
1155		1237
		1238	/* called on sigchld etc., calls waitpid */
1156	static void	1239	static void
1157	childcb (EV_P_ ev_signal *sw, int revents)	1240	childcb (EV_P_ ev_signal *sw, int revents)
1158	{	1241	{
1159	int pid, status;	1242	int pid, status;
1160		1243
…		…
1241	/* kqueue is borked on everything but netbsd apparently */	1324	/* kqueue is borked on everything but netbsd apparently */
1242	/* 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 */
1243	flags &= ~EVBACKEND_KQUEUE;	1326	flags &= ~EVBACKEND_KQUEUE;
1244	#endif	1327	#endif
1245	#ifdef __APPLE__	1328	#ifdef __APPLE__
1246	// flags &= ~EVBACKEND_KQUEUE; for documentation	1329	/* only select works correctly on that "unix-certified" platform */
1247	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 */
1248	#endif	1332	#endif
1249		1333
1250	return flags;	1334	return flags;
1251	}	1335	}
1252		1336
…		…
1284	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1368	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1285	{	1369	{
1286	timeout_blocktime = interval;	1370	timeout_blocktime = interval;
1287	}	1371	}
1288		1372
		1373	/* initialise a loop structure, must be zero-initialised */
1289	static void noinline	1374	static void noinline
1290	loop_init (EV_P_ unsigned int flags)	1375	loop_init (EV_P_ unsigned int flags)
1291	{	1376	{
1292	if (!backend)	1377	if (!backend)
1293	{	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
1294	#if EV_USE_MONOTONIC	1389	#if EV_USE_MONOTONIC
		1390	if (!have_monotonic)
1295	{	1391	{
1296	struct timespec ts;	1392	struct timespec ts;
		1393
1297	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1394	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1298	have_monotonic = 1;	1395	have_monotonic = 1;
1299	}	1396	}
1300	#endif	1397	#endif
1301		1398
1302	ev_rt_now = ev_time ();	1399	ev_rt_now = ev_time ();
1303	mn_now = get_clock ();	1400	mn_now = get_clock ();
1304	now_floor = mn_now;	1401	now_floor = mn_now;
…		…
1341	#endif	1438	#endif
1342	#if EV_USE_SELECT	1439	#if EV_USE_SELECT
1343	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1440	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1344	#endif	1441	#endif
1345		1442
		1443	ev_prepare_init (&pending_w, pendingcb);
		1444
1346	ev_init (&pipeev, pipecb);	1445	ev_init (&pipe_w, pipecb);
1347	ev_set_priority (&pipeev, EV_MAXPRI);	1446	ev_set_priority (&pipe_w, EV_MAXPRI);
1348	}	1447	}
1349	}	1448	}
1350		1449
		1450	/* free up a loop structure */
1351	static void noinline	1451	static void noinline
1352	loop_destroy (EV_P)	1452	loop_destroy (EV_P)
1353	{	1453	{
1354	int i;	1454	int i;
1355		1455
1356	if (ev_is_active (&pipeev))	1456	if (ev_is_active (&pipe_w))
1357	{	1457	{
1358	ev_ref (EV_A); /* signal watcher */	1458	ev_ref (EV_A); /* signal watcher */
1359	ev_io_stop (EV_A_ &pipeev);	1459	ev_io_stop (EV_A_ &pipe_w);
1360		1460
1361	#if EV_USE_EVENTFD	1461	#if EV_USE_EVENTFD
1362	if (evfd >= 0)	1462	if (evfd >= 0)
1363	close (evfd);	1463	close (evfd);
1364	#endif	1464	#endif
…		…
1403	}	1503	}
1404		1504
1405	ev_free (anfds); anfdmax = 0;	1505	ev_free (anfds); anfdmax = 0;
1406		1506
1407	/* 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);
1408	array_free (fdchange, EMPTY);	1509	array_free (fdchange, EMPTY);
1409	array_free (timer, EMPTY);	1510	array_free (timer, EMPTY);
1410	#if EV_PERIODIC_ENABLE	1511	#if EV_PERIODIC_ENABLE
1411	array_free (periodic, EMPTY);	1512	array_free (periodic, EMPTY);
1412	#endif	1513	#endif
…		…
1421		1522
1422	backend = 0;	1523	backend = 0;
1423	}	1524	}
1424		1525
1425	#if EV_USE_INOTIFY	1526	#if EV_USE_INOTIFY
1426	void inline_size infy_fork (EV_P);	1527	inline_size void infy_fork (EV_P);
1427	#endif	1528	#endif
1428		1529
1429	void inline_size	1530	inline_size void
1430	loop_fork (EV_P)	1531	loop_fork (EV_P)
1431	{	1532	{
1432	#if EV_USE_PORT	1533	#if EV_USE_PORT
1433	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1534	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1434	#endif	1535	#endif
…		…
1440	#endif	1541	#endif
1441	#if EV_USE_INOTIFY	1542	#if EV_USE_INOTIFY
1442	infy_fork (EV_A);	1543	infy_fork (EV_A);
1443	#endif	1544	#endif
1444		1545
1445	if (ev_is_active (&pipeev))	1546	if (ev_is_active (&pipe_w))
1446	{	1547	{
1447	/* this "locks" the handlers against writing to the pipe */	1548	/* this "locks" the handlers against writing to the pipe */
1448	/* while we modify the fd vars */	1549	/* while we modify the fd vars */
1449	gotsig = 1;	1550	gotsig = 1;
1450	#if EV_ASYNC_ENABLE	1551	#if EV_ASYNC_ENABLE
1451	gotasync = 1;	1552	gotasync = 1;
1452	#endif	1553	#endif
1453		1554
1454	ev_ref (EV_A);	1555	ev_ref (EV_A);
1455	ev_io_stop (EV_A_ &pipeev);	1556	ev_io_stop (EV_A_ &pipe_w);
1456		1557
1457	#if EV_USE_EVENTFD	1558	#if EV_USE_EVENTFD
1458	if (evfd >= 0)	1559	if (evfd >= 0)
1459	close (evfd);	1560	close (evfd);
1460	#endif	1561	#endif
…		…
1465	close (evpipe [1]);	1566	close (evpipe [1]);
1466	}	1567	}
1467		1568
1468	evpipe_init (EV_A);	1569	evpipe_init (EV_A);
1469	/* now iterate over everything, in case we missed something */	1570	/* now iterate over everything, in case we missed something */
1470	pipecb (EV_A_ &pipeev, EV_READ);	1571	pipecb (EV_A_ &pipe_w, EV_READ);
1471	}	1572	}
1472		1573
1473	postfork = 0;	1574	postfork = 0;
1474	}	1575	}
1475		1576
…		…
1505		1606
1506	#if EV_VERIFY	1607	#if EV_VERIFY
1507	static void noinline	1608	static void noinline
1508	verify_watcher (EV_P_ W w)	1609	verify_watcher (EV_P_ W w)
1509	{	1610	{
1510	assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));	1611	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1511		1612
1512	if (w->pending)	1613	if (w->pending)
1513	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));
1514	}	1615	}
1515		1616
1516	static void noinline	1617	static void noinline
1517	verify_heap (EV_P_ ANHE *heap, int N)	1618	verify_heap (EV_P_ ANHE *heap, int N)
1518	{	1619	{
1519	int i;	1620	int i;
1520		1621
1521	for (i = HEAP0; i < N + HEAP0; ++i)	1622	for (i = HEAP0; i < N + HEAP0; ++i)
1522	{	1623	{
1523	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));
1524	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])));
1525	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]))));
1526		1627
1527	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));	1628	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1528	}	1629	}
1529	}	1630	}
1530		1631
1531	static void noinline	1632	static void noinline
1532	array_verify (EV_P_ W *ws, int cnt)	1633	array_verify (EV_P_ W *ws, int cnt)
1533	{	1634	{
1534	while (cnt--)	1635	while (cnt--)
1535	{	1636	{
1536	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));	1637	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1537	verify_watcher (EV_A_ ws [cnt]);	1638	verify_watcher (EV_A_ ws [cnt]);
1538	}	1639	}
1539	}	1640	}
1540	#endif	1641	#endif
1541		1642
…		…
1548		1649
1549	assert (activecnt >= -1);	1650	assert (activecnt >= -1);
1550		1651
1551	assert (fdchangemax >= fdchangecnt);	1652	assert (fdchangemax >= fdchangecnt);
1552	for (i = 0; i < fdchangecnt; ++i)	1653	for (i = 0; i < fdchangecnt; ++i)
1553	assert (("negative fd in fdchanges", fdchanges [i] >= 0));	1654	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1554		1655
1555	assert (anfdmax >= 0);	1656	assert (anfdmax >= 0);
1556	for (i = 0; i < anfdmax; ++i)	1657	for (i = 0; i < anfdmax; ++i)
1557	for (w = anfds [i].head; w; w = w->next)	1658	for (w = anfds [i].head; w; w = w->next)
1558	{	1659	{
1559	verify_watcher (EV_A_ (W)w);	1660	verify_watcher (EV_A_ (W)w);
1560	assert (("inactive fd watcher on anfd list", ev_active (w) == 1));	1661	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));	1662	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1562	}	1663	}
1563		1664
1564	assert (timermax >= timercnt);	1665	assert (timermax >= timercnt);
1565	verify_heap (EV_A_ timers, timercnt);	1666	verify_heap (EV_A_ timers, timercnt);
1566		1667
…		…
1671	ev_invoke (EV_P_ void *w, int revents)	1772	ev_invoke (EV_P_ void *w, int revents)
1672	{	1773	{
1673	EV_CB_INVOKE ((W)w, revents);	1774	EV_CB_INVOKE ((W)w, revents);
1674	}	1775	}
1675		1776
1676	void inline_speed	1777	inline_speed void
1677	call_pending (EV_P)	1778	call_pending (EV_P)
1678	{	1779	{
1679	int pri;	1780	int pri;
1680		1781
1681	for (pri = NUMPRI; pri--; )	1782	for (pri = NUMPRI; pri--; )
1682	while (pendingcnt [pri])	1783	while (pendingcnt [pri])
1683	{	1784	{
1684	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1785	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1685		1786
1686	if (expect_true (p->w))
1687	{
1688	/*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 */
1689		1789
1690	p->w->pending = 0;	1790	p->w->pending = 0;
1691	EV_CB_INVOKE (p->w, p->events);	1791	EV_CB_INVOKE (p->w, p->events);
1692	EV_FREQUENT_CHECK;	1792	EV_FREQUENT_CHECK;
1693	}
1694	}	1793	}
1695	}	1794	}
1696		1795
1697	#if EV_IDLE_ENABLE	1796	#if EV_IDLE_ENABLE
1698	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
1699	idle_reify (EV_P)	1800	idle_reify (EV_P)
1700	{	1801	{
1701	if (expect_false (idleall))	1802	if (expect_false (idleall))
1702	{	1803	{
1703	int pri;	1804	int pri;
…		…
1715	}	1816	}
1716	}	1817	}
1717	}	1818	}
1718	#endif	1819	#endif
1719		1820
1720	void inline_size	1821	/* make timers pending */
		1822	inline_size void
1721	timers_reify (EV_P)	1823	timers_reify (EV_P)
1722	{	1824	{
1723	EV_FREQUENT_CHECK;	1825	EV_FREQUENT_CHECK;
1724		1826
1725	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	1827	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1726	{	1828	{
1727	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	1829	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	{	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	{
1734	ev_at (w) += w->repeat;	1838	ev_at (w) += w->repeat;
1735	if (ev_at (w) < mn_now)	1839	if (ev_at (w) < mn_now)
1736	ev_at (w) = mn_now;	1840	ev_at (w) = mn_now;
1737		1841
1738	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.));
1739		1843
1740	ANHE_at_cache (timers [HEAP0]);	1844	ANHE_at_cache (timers [HEAP0]);
1741	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);
1742	}	1852	}
1743	else	1853	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1744	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1745		1854
1746	EV_FREQUENT_CHECK;
1747	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1855	feed_reverse_done (EV_A_ EV_TIMEOUT);
1748	}	1856	}
1749	}	1857	}
1750		1858
1751	#if EV_PERIODIC_ENABLE	1859	#if EV_PERIODIC_ENABLE
1752	void inline_size	1860	/* make periodics pending */
		1861	inline_size void
1753	periodics_reify (EV_P)	1862	periodics_reify (EV_P)
1754	{	1863	{
1755	EV_FREQUENT_CHECK;	1864	EV_FREQUENT_CHECK;
1756		1865
1757	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	1866	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1758	{	1867	{
1759	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	1868	int feed_count = 0;
1760		1869
1761	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	1870	do
1762
1763	/* first reschedule or stop timer */
1764	if (w->reschedule_cb)
1765	{	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	{
1766	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1879	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1767		1880
1768	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));
1769		1882
1770	ANHE_at_cache (periodics [HEAP0]);	1883	ANHE_at_cache (periodics [HEAP0]);
1771	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);
1772	}	1910	}
1773	else if (w->interval)	1911	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		1912
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);	1913	feed_reverse_done (EV_A_ EV_PERIODIC);
1797	}	1914	}
1798	}	1915	}
1799		1916
		1917	/* simply recalculate all periodics */
		1918	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1800	static void noinline	1919	static void noinline
1801	periodics_reschedule (EV_P)	1920	periodics_reschedule (EV_P)
1802	{	1921	{
1803	int i;	1922	int i;
1804		1923
…		…
1817		1936
1818	reheap (periodics, periodiccnt);	1937	reheap (periodics, periodiccnt);
1819	}	1938	}
1820	#endif	1939	#endif
1821		1940
1822	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
1823	time_update (EV_P_ ev_tstamp max_block)	1958	time_update (EV_P_ ev_tstamp max_block)
1824	{	1959	{
1825	int i;
1826
1827	#if EV_USE_MONOTONIC	1960	#if EV_USE_MONOTONIC
1828	if (expect_true (have_monotonic))	1961	if (expect_true (have_monotonic))
1829	{	1962	{
		1963	int i;
1830	ev_tstamp odiff = rtmn_diff;	1964	ev_tstamp odiff = rtmn_diff;
1831		1965
1832	mn_now = get_clock ();	1966	mn_now = get_clock ();
1833		1967
1834	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	1968	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1860	ev_rt_now = ev_time ();	1994	ev_rt_now = ev_time ();
1861	mn_now = get_clock ();	1995	mn_now = get_clock ();
1862	now_floor = mn_now;	1996	now_floor = mn_now;
1863	}	1997	}
1864		1998
		1999	/* no timer adjustment, as the monotonic clock doesn't jump */
		2000	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1865	# if EV_PERIODIC_ENABLE	2001	# if EV_PERIODIC_ENABLE
1866	periodics_reschedule (EV_A);	2002	periodics_reschedule (EV_A);
1867	# endif	2003	# endif
1868	/* no timer adjustment, as the monotonic clock doesn't jump */
1869	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1870	}	2004	}
1871	else	2005	else
1872	#endif	2006	#endif
1873	{	2007	{
1874	ev_rt_now = ev_time ();	2008	ev_rt_now = ev_time ();
1875		2009
1876	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))
1877	{	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);
1878	#if EV_PERIODIC_ENABLE	2014	#if EV_PERIODIC_ENABLE
1879	periodics_reschedule (EV_A);	2015	periodics_reschedule (EV_A);
1880	#endif	2016	#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	}	2017	}
1889		2018
1890	mn_now = ev_rt_now;	2019	mn_now = ev_rt_now;
1891	}	2020	}
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	}	2021	}
1911		2022
1912	static int loop_done;	2023	static int loop_done;
1913		2024
1914	void	2025	void
…		…
1948	{	2059	{
1949	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2060	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1950	call_pending (EV_A);	2061	call_pending (EV_A);
1951	}	2062	}
1952		2063
1953	if (expect_false (!activecnt))
1954	break;
1955
1956	/* we might have forked, so reify kernel state if necessary */	2064	/* we might have forked, so reify kernel state if necessary */
1957	if (expect_false (postfork))	2065	if (expect_false (postfork))
1958	loop_fork (EV_A);	2066	loop_fork (EV_A);
1959		2067
1960	/* update fd-related kernel structures */	2068	/* update fd-related kernel structures */
…		…
2039	ev_unloop (EV_P_ int how)	2147	ev_unloop (EV_P_ int how)
2040	{	2148	{
2041	loop_done = how;	2149	loop_done = how;
2042	}	2150	}
2043		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
2044	/*****************************************************************************/	2189	/*****************************************************************************/
		2190	/* singly-linked list management, used when the expected list length is short */
2045		2191
2046	void inline_size	2192	inline_size void
2047	wlist_add (WL *head, WL elem)	2193	wlist_add (WL *head, WL elem)
2048	{	2194	{
2049	elem->next = *head;	2195	elem->next = *head;
2050	*head = elem;	2196	*head = elem;
2051	}	2197	}
2052		2198
2053	void inline_size	2199	inline_size void
2054	wlist_del (WL *head, WL elem)	2200	wlist_del (WL *head, WL elem)
2055	{	2201	{
2056	while (*head)	2202	while (*head)
2057	{	2203	{
2058	if (*head == elem)	2204	if (*head == elem)
…		…
2063		2209
2064	head = &(*head)->next;	2210	head = &(*head)->next;
2065	}	2211	}
2066	}	2212	}
2067		2213
2068	void inline_speed	2214	/* internal, faster, version of ev_clear_pending */
		2215	inline_speed void
2069	clear_pending (EV_P_ W w)	2216	clear_pending (EV_P_ W w)
2070	{	2217	{
2071	if (w->pending)	2218	if (w->pending)
2072	{	2219	{
2073	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2220	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2074	w->pending = 0;	2221	w->pending = 0;
2075	}	2222	}
2076	}	2223	}
2077		2224
2078	int	2225	int
…		…
2082	int pending = w_->pending;	2229	int pending = w_->pending;
2083		2230
2084	if (expect_true (pending))	2231	if (expect_true (pending))
2085	{	2232	{
2086	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2233	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2234	p->w = (W)&pending_w;
2087	w_->pending = 0;	2235	w_->pending = 0;
2088	p->w = 0;
2089	return p->events;	2236	return p->events;
2090	}	2237	}
2091	else	2238	else
2092	return 0;	2239	return 0;
2093	}	2240	}
2094		2241
2095	void inline_size	2242	inline_size void
2096	pri_adjust (EV_P_ W w)	2243	pri_adjust (EV_P_ W w)
2097	{	2244	{
2098	int pri = w->priority;	2245	int pri = w->priority;
2099	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2246	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2100	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2247	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2101	w->priority = pri;	2248	w->priority = pri;
2102	}	2249	}
2103		2250
2104	void inline_speed	2251	inline_speed void
2105	ev_start (EV_P_ W w, int active)	2252	ev_start (EV_P_ W w, int active)
2106	{	2253	{
2107	pri_adjust (EV_A_ w);	2254	pri_adjust (EV_A_ w);
2108	w->active = active;	2255	w->active = active;
2109	ev_ref (EV_A);	2256	ev_ref (EV_A);
2110	}	2257	}
2111		2258
2112	void inline_size	2259	inline_size void
2113	ev_stop (EV_P_ W w)	2260	ev_stop (EV_P_ W w)
2114	{	2261	{
2115	ev_unref (EV_A);	2262	ev_unref (EV_A);
2116	w->active = 0;	2263	w->active = 0;
2117	}	2264	}
…		…
2124	int fd = w->fd;	2271	int fd = w->fd;
2125		2272
2126	if (expect_false (ev_is_active (w)))	2273	if (expect_false (ev_is_active (w)))
2127	return;	2274	return;
2128		2275
2129	assert (("ev_io_start called with negative fd", fd >= 0));	2276	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))));	2277	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2131		2278
2132	EV_FREQUENT_CHECK;	2279	EV_FREQUENT_CHECK;
2133		2280
2134	ev_start (EV_A_ (W)w, 1);	2281	ev_start (EV_A_ (W)w, 1);
2135	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2282	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2136	wlist_add (&anfds[fd].head, (WL)w);	2283	wlist_add (&anfds[fd].head, (WL)w);
2137		2284
2138	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2285	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
2139	w->events &= ~EV_IOFDSET;	2286	w->events &= ~EV__IOFDSET;
2140		2287
2141	EV_FREQUENT_CHECK;	2288	EV_FREQUENT_CHECK;
2142	}	2289	}
2143		2290
2144	void noinline	2291	void noinline
…		…
2146	{	2293	{
2147	clear_pending (EV_A_ (W)w);	2294	clear_pending (EV_A_ (W)w);
2148	if (expect_false (!ev_is_active (w)))	2295	if (expect_false (!ev_is_active (w)))
2149	return;	2296	return;
2150		2297
2151	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));
2152		2299
2153	EV_FREQUENT_CHECK;	2300	EV_FREQUENT_CHECK;
2154		2301
2155	wlist_del (&anfds[w->fd].head, (WL)w);	2302	wlist_del (&anfds[w->fd].head, (WL)w);
2156	ev_stop (EV_A_ (W)w);	2303	ev_stop (EV_A_ (W)w);
…		…
2166	if (expect_false (ev_is_active (w)))	2313	if (expect_false (ev_is_active (w)))
2167	return;	2314	return;
2168		2315
2169	ev_at (w) += mn_now;	2316	ev_at (w) += mn_now;
2170		2317
2171	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.));
2172		2319
2173	EV_FREQUENT_CHECK;	2320	EV_FREQUENT_CHECK;
2174		2321
2175	++timercnt;	2322	++timercnt;
2176	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);	2323	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
…		…
2179	ANHE_at_cache (timers [ev_active (w)]);	2326	ANHE_at_cache (timers [ev_active (w)]);
2180	upheap (timers, ev_active (w));	2327	upheap (timers, ev_active (w));
2181		2328
2182	EV_FREQUENT_CHECK;	2329	EV_FREQUENT_CHECK;
2183		2330
2184	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2331	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2185	}	2332	}
2186		2333
2187	void noinline	2334	void noinline
2188	ev_timer_stop (EV_P_ ev_timer *w)	2335	ev_timer_stop (EV_P_ ev_timer *w)
2189	{	2336	{
…		…
2194	EV_FREQUENT_CHECK;	2341	EV_FREQUENT_CHECK;
2195		2342
2196	{	2343	{
2197	int active = ev_active (w);	2344	int active = ev_active (w);
2198		2345
2199	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2346	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2200		2347
2201	--timercnt;	2348	--timercnt;
2202		2349
2203	if (expect_true (active < timercnt + HEAP0))	2350	if (expect_true (active < timercnt + HEAP0))
2204	{	2351	{
…		…
2248		2395
2249	if (w->reschedule_cb)	2396	if (w->reschedule_cb)
2250	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2397	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2251	else if (w->interval)	2398	else if (w->interval)
2252	{	2399	{
2253	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.));
2254	/* 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 */
2255	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;
2256	}	2403	}
2257	else	2404	else
2258	ev_at (w) = w->offset;	2405	ev_at (w) = w->offset;
…		…
2266	ANHE_at_cache (periodics [ev_active (w)]);	2413	ANHE_at_cache (periodics [ev_active (w)]);
2267	upheap (periodics, ev_active (w));	2414	upheap (periodics, ev_active (w));
2268		2415
2269	EV_FREQUENT_CHECK;	2416	EV_FREQUENT_CHECK;
2270		2417
2271	/*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));*/
2272	}	2419	}
2273		2420
2274	void noinline	2421	void noinline
2275	ev_periodic_stop (EV_P_ ev_periodic *w)	2422	ev_periodic_stop (EV_P_ ev_periodic *w)
2276	{	2423	{
…		…
2281	EV_FREQUENT_CHECK;	2428	EV_FREQUENT_CHECK;
2282		2429
2283	{	2430	{
2284	int active = ev_active (w);	2431	int active = ev_active (w);
2285		2432
2286	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2433	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2287		2434
2288	--periodiccnt;	2435	--periodiccnt;
2289		2436
2290	if (expect_true (active < periodiccnt + HEAP0))	2437	if (expect_true (active < periodiccnt + HEAP0))
2291	{	2438	{
…		…
2314		2461
2315	void noinline	2462	void noinline
2316	ev_signal_start (EV_P_ ev_signal *w)	2463	ev_signal_start (EV_P_ ev_signal *w)
2317	{	2464	{
2318	#if EV_MULTIPLICITY	2465	#if EV_MULTIPLICITY
2319	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));
2320	#endif	2467	#endif
2321	if (expect_false (ev_is_active (w)))	2468	if (expect_false (ev_is_active (w)))
2322	return;	2469	return;
2323		2470
2324	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));
2325		2472
2326	evpipe_init (EV_A);	2473	evpipe_init (EV_A);
2327		2474
2328	EV_FREQUENT_CHECK;	2475	EV_FREQUENT_CHECK;
2329		2476
…		…
2380		2527
2381	void	2528	void
2382	ev_child_start (EV_P_ ev_child *w)	2529	ev_child_start (EV_P_ ev_child *w)
2383	{	2530	{
2384	#if EV_MULTIPLICITY	2531	#if EV_MULTIPLICITY
2385	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));
2386	#endif	2533	#endif
2387	if (expect_false (ev_is_active (w)))	2534	if (expect_false (ev_is_active (w)))
2388	return;	2535	return;
2389		2536
2390	EV_FREQUENT_CHECK;	2537	EV_FREQUENT_CHECK;
…		…
2449	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2596	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2450	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2597	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2451		2598
2452	char *pend = strrchr (path, '/');	2599	char *pend = strrchr (path, '/');
2453		2600
2454	if (!pend)	2601	if (!pend || pend == path)
2455	break; /* whoops, no '/', complain to your admin */	2602	break;
2456		2603
2457	*pend = 0;	2604	*pend = 0;
2458	w->wd = inotify_add_watch (fs_fd, path, mask);	2605	w->wd = inotify_add_watch (fs_fd, path, mask);
2459	}	2606	}
2460	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2607	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2461	}	2608	}
2462	}	2609	}
2463	else	2610
		2611	if (w->wd >= 0)
2464	{	2612	{
2465	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);
2466		2614
2467	/* now local changes will be tracked by inotify, but remote changes won't */	2615	/* now local changes will be tracked by inotify, but remote changes won't */
2468	/* unless the filesystem it known to be local, we therefore still poll */	2616	/* unless the filesystem it known to be local, we therefore still poll */
…		…
2518		2666
2519	if (w->wd == wd || wd == -1)	2667	if (w->wd == wd || wd == -1)
2520	{	2668	{
2521	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2669	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2522	{	2670	{
		2671	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2523	w->wd = -1;	2672	w->wd = -1;
2524	infy_add (EV_A_ w); /* re-add, no matter what */	2673	infy_add (EV_A_ w); /* re-add, no matter what */
2525	}	2674	}
2526		2675
2527	stat_timer_cb (EV_A_ &w->timer, 0);	2676	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2540		2689
2541	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)
2542	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2691	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2543	}	2692	}
2544		2693
2545	void inline_size	2694	inline_size void
2546	check_2625 (EV_P)	2695	check_2625 (EV_P)
2547	{	2696	{
2548	/* kernels < 2.6.25 are borked	2697	/* kernels < 2.6.25 are borked
2549	* 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
2550	*/	2699	*/
…		…
2563	return;	2712	return;
2564		2713
2565	fs_2625 = 1;	2714	fs_2625 = 1;
2566	}	2715	}
2567		2716
2568	void inline_size	2717	inline_size void
2569	infy_init (EV_P)	2718	infy_init (EV_P)
2570	{	2719	{
2571	if (fs_fd != -2)	2720	if (fs_fd != -2)
2572	return;	2721	return;
2573		2722
…		…
2583	ev_set_priority (&fs_w, EV_MAXPRI);	2732	ev_set_priority (&fs_w, EV_MAXPRI);
2584	ev_io_start (EV_A_ &fs_w);	2733	ev_io_start (EV_A_ &fs_w);
2585	}	2734	}
2586	}	2735	}
2587		2736
2588	void inline_size	2737	inline_size void
2589	infy_fork (EV_P)	2738	infy_fork (EV_P)
2590	{	2739	{
2591	int slot;	2740	int slot;
2592		2741
2593	if (fs_fd < 0)	2742	if (fs_fd < 0)
…		…
2874	static void	3023	static void
2875	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)	3024	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2876	{	3025	{
2877	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));
2878		3027
		3028	ev_embed_stop (EV_A_ w);
		3029
2879	{	3030	{
2880	struct ev_loop *loop = w->other;	3031	struct ev_loop *loop = w->other;
2881		3032
2882	ev_loop_fork (EV_A);	3033	ev_loop_fork (EV_A);
		3034	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2883	}	3035	}
		3036
		3037	ev_embed_start (EV_A_ w);
2884	}	3038	}
2885		3039
2886	#if 0	3040	#if 0
2887	static void	3041	static void
2888	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3042	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
…		…
2897	if (expect_false (ev_is_active (w)))	3051	if (expect_false (ev_is_active (w)))
2898	return;	3052	return;
2899		3053
2900	{	3054	{
2901	struct ev_loop *loop = w->other;	3055	struct ev_loop *loop = w->other;
2902	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 ()));
2903	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);
2904	}	3058	}
2905		3059
2906	EV_FREQUENT_CHECK;	3060	EV_FREQUENT_CHECK;
2907		3061
…		…
3090	ev_timer_set (&once->to, timeout, 0.);	3244	ev_timer_set (&once->to, timeout, 0.);
3091	ev_timer_start (EV_A_ &once->to);	3245	ev_timer_start (EV_A_ &once->to);
3092	}	3246	}
3093	}	3247	}
3094		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
3095	#if EV_MULTIPLICITY	3357	#if EV_MULTIPLICITY
3096	#include "ev_wrap.h"	3358	#include "ev_wrap.h"
3097	#endif	3359	#endif
3098		3360
3099	#ifdef __cplusplus	3361	#ifdef __cplusplus

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