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Comparing libev/ev.c (file contents):
Revision 1.259 by root, Mon Sep 8 13:14:23 2008 UTC vs.
Revision 1.287 by root, Mon Apr 20 19:45:58 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
…		…
286	# include <sys/select.h>	306	# include <sys/select.h>
287	# endif	307	# endif
288	#endif	308	#endif
289		309
290	#if EV_USE_INOTIFY	310	#if EV_USE_INOTIFY
		311	# include <sys/utsname.h>
		312	# include <sys/statfs.h>
291	# include <sys/inotify.h>	313	# include <sys/inotify.h>
		314	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
		315	# ifndef IN_DONT_FOLLOW
		316	# undef EV_USE_INOTIFY
		317	# define EV_USE_INOTIFY 0
		318	# endif
292	#endif	319	#endif
293		320
294	#if EV_SELECT_IS_WINSOCKET	321	#if EV_SELECT_IS_WINSOCKET
295	# include <winsock.h>	322	# include <winsock.h>
		323	#endif
		324
		325	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		326	/* which makes programs even slower. might work on other unices, too. */
		327	#if EV_USE_CLOCK_SYSCALL
		328	# include <syscall.h>
		329	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		330	# undef EV_USE_MONOTONIC
		331	# define EV_USE_MONOTONIC 1
296	#endif	332	#endif
297		333
298	#if EV_USE_EVENTFD	334	#if EV_USE_EVENTFD
299	/* 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 */
300	# include <stdint.h>	336	# include <stdint.h>
…		…
361	typedef ev_watcher_time *WT;	397	typedef ev_watcher_time *WT;
362		398
363	#define ev_active(w) ((W)(w))->active	399	#define ev_active(w) ((W)(w))->active
364	#define ev_at(w) ((WT)(w))->at	400	#define ev_at(w) ((WT)(w))->at
365		401
366	#if EV_USE_MONOTONIC	402	#if EV_USE_REALTIME
367	/* 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 */
368	/* 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
369	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? */
370	#endif	410	#endif
371		411
372	#ifdef _WIN32	412	#ifdef _WIN32
373	# include "ev_win32.c"	413	# include "ev_win32.c"
…		…
382	{	422	{
383	syserr_cb = cb;	423	syserr_cb = cb;
384	}	424	}
385		425
386	static void noinline	426	static void noinline
387	syserr (const char *msg)	427	ev_syserr (const char *msg)
388	{	428	{
389	if (!msg)	429	if (!msg)
390	msg = "(libev) system error";	430	msg = "(libev) system error";
391		431
392	if (syserr_cb)	432	if (syserr_cb)
…		…
443	typedef struct	483	typedef struct
444	{	484	{
445	WL head;	485	WL head;
446	unsigned char events;	486	unsigned char events;
447	unsigned char reify;	487	unsigned char reify;
		488	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
		489	unsigned char unused;
		490	#if EV_USE_EPOLL
		491	unsigned int egen; /* generation counter to counter epoll bugs */
		492	#endif
448	#if EV_SELECT_IS_WINSOCKET	493	#if EV_SELECT_IS_WINSOCKET
449	SOCKET handle;	494	SOCKET handle;
450	#endif	495	#endif
451	} ANFD;	496	} ANFD;
452		497
…		…
512		557
513	ev_tstamp	558	ev_tstamp
514	ev_time (void)	559	ev_time (void)
515	{	560	{
516	#if EV_USE_REALTIME	561	#if EV_USE_REALTIME
		562	if (expect_true (have_realtime))
		563	{
517	struct timespec ts;	564	struct timespec ts;
518	clock_gettime (CLOCK_REALTIME, &ts);	565	clock_gettime (CLOCK_REALTIME, &ts);
519	return ts.tv_sec + ts.tv_nsec * 1e-9;	566	return ts.tv_sec + ts.tv_nsec * 1e-9;
520	#else	567	}
		568	#endif
		569
521	struct timeval tv;	570	struct timeval tv;
522	gettimeofday (&tv, 0);	571	gettimeofday (&tv, 0);
523	return tv.tv_sec + tv.tv_usec * 1e-6;	572	return tv.tv_sec + tv.tv_usec * 1e-6;
524	#endif
525	}	573	}
526		574
527	ev_tstamp inline_size	575	inline_size ev_tstamp
528	get_clock (void)	576	get_clock (void)
529	{	577	{
530	#if EV_USE_MONOTONIC	578	#if EV_USE_MONOTONIC
531	if (expect_true (have_monotonic))	579	if (expect_true (have_monotonic))
532	{	580	{
…		…
577		625
578	/*****************************************************************************/	626	/*****************************************************************************/
579		627
580	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	628	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
581		629
582	int inline_size	630	inline_size int
583	array_nextsize (int elem, int cur, int cnt)	631	array_nextsize (int elem, int cur, int cnt)
584	{	632	{
585	int ncur = cur + 1;	633	int ncur = cur + 1;
586		634
587	do	635	do
…		…
604	array_realloc (int elem, void *base, int *cur, int cnt)	652	array_realloc (int elem, void *base, int *cur, int cnt)
605	{	653	{
606	*cur = array_nextsize (elem, *cur, cnt);	654	*cur = array_nextsize (elem, *cur, cnt);
607	return ev_realloc (base, elem * *cur);	655	return ev_realloc (base, elem * *cur);
608	}	656	}
		657
		658	#define array_init_zero(base,count) \
		659	memset ((void *)(base), 0, sizeof (*(base)) * (count))
609		660
610	#define array_needsize(type,base,cur,cnt,init) \	661	#define array_needsize(type,base,cur,cnt,init) \
611	if (expect_false ((cnt) > (cur))) \	662	if (expect_false ((cnt) > (cur))) \
612	{ \	663	{ \
613	int ocur_ = (cur); \	664	int ocur_ = (cur); \
…		…
625	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	676	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
626	}	677	}
627	#endif	678	#endif
628		679
629	#define array_free(stem, idx) \	680	#define array_free(stem, idx) \
630	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	681	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
631		682
632	/*****************************************************************************/	683	/*****************************************************************************/
633		684
634	void noinline	685	void noinline
635	ev_feed_event (EV_P_ void *w, int revents)	686	ev_feed_event (EV_P_ void *w, int revents)
…		…
646	pendings [pri][w_->pending - 1].w = w_;	697	pendings [pri][w_->pending - 1].w = w_;
647	pendings [pri][w_->pending - 1].events = revents;	698	pendings [pri][w_->pending - 1].events = revents;
648	}	699	}
649	}	700	}
650		701
651	void inline_speed	702	inline_speed void
		703	feed_reverse (EV_P_ W w)
		704	{
		705	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		706	rfeeds [rfeedcnt++] = w;
		707	}
		708
		709	inline_size void
		710	feed_reverse_done (EV_P_ int revents)
		711	{
		712	do
		713	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		714	while (rfeedcnt);
		715	}
		716
		717	inline_speed void
652	queue_events (EV_P_ W *events, int eventcnt, int type)	718	queue_events (EV_P_ W *events, int eventcnt, int type)
653	{	719	{
654	int i;	720	int i;
655		721
656	for (i = 0; i < eventcnt; ++i)	722	for (i = 0; i < eventcnt; ++i)
657	ev_feed_event (EV_A_ events [i], type);	723	ev_feed_event (EV_A_ events [i], type);
658	}	724	}
659		725
660	/*****************************************************************************/	726	/*****************************************************************************/
661		727
662	void inline_size	728	inline_speed void
663	anfds_init (ANFD *base, int count)
664	{
665	while (count--)
666	{
667	base->head = 0;
668	base->events = EV_NONE;
669	base->reify = 0;
670
671	++base;
672	}
673	}
674
675	void inline_speed
676	fd_event (EV_P_ int fd, int revents)	729	fd_event (EV_P_ int fd, int revents)
677	{	730	{
678	ANFD *anfd = anfds + fd;	731	ANFD *anfd = anfds + fd;
679	ev_io *w;	732	ev_io *w;
680		733
…		…
692	{	745	{
693	if (fd >= 0 && fd < anfdmax)	746	if (fd >= 0 && fd < anfdmax)
694	fd_event (EV_A_ fd, revents);	747	fd_event (EV_A_ fd, revents);
695	}	748	}
696		749
697	void inline_size	750	inline_size void
698	fd_reify (EV_P)	751	fd_reify (EV_P)
699	{	752	{
700	int i;	753	int i;
701		754
702	for (i = 0; i < fdchangecnt; ++i)	755	for (i = 0; i < fdchangecnt; ++i)
…		…
717	#ifdef EV_FD_TO_WIN32_HANDLE	770	#ifdef EV_FD_TO_WIN32_HANDLE
718	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	771	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
719	#else	772	#else
720	anfd->handle = _get_osfhandle (fd);	773	anfd->handle = _get_osfhandle (fd);
721	#endif	774	#endif
722	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	775	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
723	}	776	}
724	#endif	777	#endif
725		778
726	{	779	{
727	unsigned char o_events = anfd->events;	780	unsigned char o_events = anfd->events;
728	unsigned char o_reify = anfd->reify;	781	unsigned char o_reify = anfd->reify;
729		782
730	anfd->reify = 0;	783	anfd->reify = 0;
731	anfd->events = events;	784	anfd->events = events;
732		785
733	if (o_events != events || o_reify & EV_IOFDSET)	786	if (o_events != events || o_reify & EV__IOFDSET)
734	backend_modify (EV_A_ fd, o_events, events);	787	backend_modify (EV_A_ fd, o_events, events);
735	}	788	}
736	}	789	}
737		790
738	fdchangecnt = 0;	791	fdchangecnt = 0;
739	}	792	}
740		793
741	void inline_size	794	inline_size void
742	fd_change (EV_P_ int fd, int flags)	795	fd_change (EV_P_ int fd, int flags)
743	{	796	{
744	unsigned char reify = anfds [fd].reify;	797	unsigned char reify = anfds [fd].reify;
745	anfds [fd].reify |= flags;	798	anfds [fd].reify |= flags;
746		799
…		…
750	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	803	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
751	fdchanges [fdchangecnt - 1] = fd;	804	fdchanges [fdchangecnt - 1] = fd;
752	}	805	}
753	}	806	}
754		807
755	void inline_speed	808	inline_speed void
756	fd_kill (EV_P_ int fd)	809	fd_kill (EV_P_ int fd)
757	{	810	{
758	ev_io *w;	811	ev_io *w;
759		812
760	while ((w = (ev_io *)anfds [fd].head))	813	while ((w = (ev_io *)anfds [fd].head))
…		…
762	ev_io_stop (EV_A_ w);	815	ev_io_stop (EV_A_ w);
763	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	816	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
764	}	817	}
765	}	818	}
766		819
767	int inline_size	820	inline_size int
768	fd_valid (int fd)	821	fd_valid (int fd)
769	{	822	{
770	#ifdef _WIN32	823	#ifdef _WIN32
771	return _get_osfhandle (fd) != -1;	824	return _get_osfhandle (fd) != -1;
772	#else	825	#else
…		…
808		861
809	for (fd = 0; fd < anfdmax; ++fd)	862	for (fd = 0; fd < anfdmax; ++fd)
810	if (anfds [fd].events)	863	if (anfds [fd].events)
811	{	864	{
812	anfds [fd].events = 0;	865	anfds [fd].events = 0;
		866	anfds [fd].emask = 0;
813	fd_change (EV_A_ fd, EV_IOFDSET | 1);	867	fd_change (EV_A_ fd, EV__IOFDSET | 1);
814	}	868	}
815	}	869	}
816		870
817	/*****************************************************************************/	871	/*****************************************************************************/
818		872
…		…
834	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	888	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
835	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)	889	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
836	#define UPHEAP_DONE(p,k) ((p) == (k))	890	#define UPHEAP_DONE(p,k) ((p) == (k))
837		891
838	/* away from the root */	892	/* away from the root */
839	void inline_speed	893	inline_speed void
840	downheap (ANHE *heap, int N, int k)	894	downheap (ANHE *heap, int N, int k)
841	{	895	{
842	ANHE he = heap [k];	896	ANHE he = heap [k];
843	ANHE *E = heap + N + HEAP0;	897	ANHE *E = heap + N + HEAP0;
844		898
…		…
884	#define HEAP0 1	938	#define HEAP0 1
885	#define HPARENT(k) ((k) >> 1)	939	#define HPARENT(k) ((k) >> 1)
886	#define UPHEAP_DONE(p,k) (!(p))	940	#define UPHEAP_DONE(p,k) (!(p))
887		941
888	/* away from the root */	942	/* away from the root */
889	void inline_speed	943	inline_speed void
890	downheap (ANHE *heap, int N, int k)	944	downheap (ANHE *heap, int N, int k)
891	{	945	{
892	ANHE he = heap [k];	946	ANHE he = heap [k];
893		947
894	for (;;)	948	for (;;)
…		…
914	ev_active (ANHE_w (he)) = k;	968	ev_active (ANHE_w (he)) = k;
915	}	969	}
916	#endif	970	#endif
917		971
918	/* towards the root */	972	/* towards the root */
919	void inline_speed	973	inline_speed void
920	upheap (ANHE *heap, int k)	974	upheap (ANHE *heap, int k)
921	{	975	{
922	ANHE he = heap [k];	976	ANHE he = heap [k];
923		977
924	for (;;)	978	for (;;)
…		…
935		989
936	heap [k] = he;	990	heap [k] = he;
937	ev_active (ANHE_w (he)) = k;	991	ev_active (ANHE_w (he)) = k;
938	}	992	}
939		993
940	void inline_size	994	inline_size void
941	adjustheap (ANHE *heap, int N, int k)	995	adjustheap (ANHE *heap, int N, int k)
942	{	996	{
943	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	997	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
944	upheap (heap, k);	998	upheap (heap, k);
945	else	999	else
946	downheap (heap, N, k);	1000	downheap (heap, N, k);
947	}	1001	}
948		1002
949	/* rebuild the heap: this function is used only once and executed rarely */	1003	/* rebuild the heap: this function is used only once and executed rarely */
950	void inline_size	1004	inline_size void
951	reheap (ANHE *heap, int N)	1005	reheap (ANHE *heap, int N)
952	{	1006	{
953	int i;	1007	int i;
954		1008
955	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */	1009	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
…		…
969	static ANSIG *signals;	1023	static ANSIG *signals;
970	static int signalmax;	1024	static int signalmax;
971		1025
972	static EV_ATOMIC_T gotsig;	1026	static EV_ATOMIC_T gotsig;
973		1027
974	void inline_size
975	signals_init (ANSIG *base, int count)
976	{
977	while (count--)
978	{
979	base->head = 0;
980	base->gotsig = 0;
981
982	++base;
983	}
984	}
985
986	/*****************************************************************************/	1028	/*****************************************************************************/
987		1029
988	void inline_speed	1030	inline_speed void
989	fd_intern (int fd)	1031	fd_intern (int fd)
990	{	1032	{
991	#ifdef _WIN32	1033	#ifdef _WIN32
992	unsigned long arg = 1;	1034	unsigned long arg = 1;
993	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1035	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
1011	}	1053	}
1012	else	1054	else
1013	#endif	1055	#endif
1014	{	1056	{
1015	while (pipe (evpipe))	1057	while (pipe (evpipe))
1016	syserr ("(libev) error creating signal/async pipe");	1058	ev_syserr ("(libev) error creating signal/async pipe");
1017		1059
1018	fd_intern (evpipe [0]);	1060	fd_intern (evpipe [0]);
1019	fd_intern (evpipe [1]);	1061	fd_intern (evpipe [1]);
1020	ev_io_set (&pipeev, evpipe [0], EV_READ);	1062	ev_io_set (&pipeev, evpipe [0], EV_READ);
1021	}	1063	}
…		…
1023	ev_io_start (EV_A_ &pipeev);	1065	ev_io_start (EV_A_ &pipeev);
1024	ev_unref (EV_A); /* watcher should not keep loop alive */	1066	ev_unref (EV_A); /* watcher should not keep loop alive */
1025	}	1067	}
1026	}	1068	}
1027		1069
1028	void inline_size	1070	inline_size void
1029	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1071	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1030	{	1072	{
1031	if (!*flag)	1073	if (!*flag)
1032	{	1074	{
1033	int old_errno = errno; /* save errno because write might clobber it */	1075	int old_errno = errno; /* save errno because write might clobber it */
…		…
1111	ev_feed_signal_event (EV_P_ int signum)	1153	ev_feed_signal_event (EV_P_ int signum)
1112	{	1154	{
1113	WL w;	1155	WL w;
1114		1156
1115	#if EV_MULTIPLICITY	1157	#if EV_MULTIPLICITY
1116	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1158	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1117	#endif	1159	#endif
1118		1160
1119	--signum;	1161	--signum;
1120		1162
1121	if (signum < 0 || signum >= signalmax)	1163	if (signum < 0 || signum >= signalmax)
…		…
1137		1179
1138	#ifndef WIFCONTINUED	1180	#ifndef WIFCONTINUED
1139	# define WIFCONTINUED(status) 0	1181	# define WIFCONTINUED(status) 0
1140	#endif	1182	#endif
1141		1183
1142	void inline_speed	1184	inline_speed void
1143	child_reap (EV_P_ int chain, int pid, int status)	1185	child_reap (EV_P_ int chain, int pid, int status)
1144	{	1186	{
1145	ev_child *w;	1187	ev_child *w;
1146	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1188	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1147		1189
…		…
1250	/* kqueue is borked on everything but netbsd apparently */	1292	/* kqueue is borked on everything but netbsd apparently */
1251	/* it usually doesn't work correctly on anything but sockets and pipes */	1293	/* it usually doesn't work correctly on anything but sockets and pipes */
1252	flags &= ~EVBACKEND_KQUEUE;	1294	flags &= ~EVBACKEND_KQUEUE;
1253	#endif	1295	#endif
1254	#ifdef __APPLE__	1296	#ifdef __APPLE__
1255	// flags &= ~EVBACKEND_KQUEUE; for documentation	1297	/* only select works correctly on that "unix-certified" platform */
1256	flags &= ~EVBACKEND_POLL;	1298	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1299	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1257	#endif	1300	#endif
1258		1301
1259	return flags;	1302	return flags;
1260	}	1303	}
1261		1304
…		…
1298	static void noinline	1341	static void noinline
1299	loop_init (EV_P_ unsigned int flags)	1342	loop_init (EV_P_ unsigned int flags)
1300	{	1343	{
1301	if (!backend)	1344	if (!backend)
1302	{	1345	{
		1346	#if EV_USE_REALTIME
		1347	if (!have_realtime)
		1348	{
		1349	struct timespec ts;
		1350
		1351	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1352	have_realtime = 1;
		1353	}
		1354	#endif
		1355
1303	#if EV_USE_MONOTONIC	1356	#if EV_USE_MONOTONIC
		1357	if (!have_monotonic)
1304	{	1358	{
1305	struct timespec ts;	1359	struct timespec ts;
		1360
1306	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1361	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1307	have_monotonic = 1;	1362	have_monotonic = 1;
1308	}	1363	}
1309	#endif	1364	#endif
1310		1365
1311	ev_rt_now = ev_time ();	1366	ev_rt_now = ev_time ();
1312	mn_now = get_clock ();	1367	mn_now = get_clock ();
1313	now_floor = mn_now;	1368	now_floor = mn_now;
…		…
1412	}	1467	}
1413		1468
1414	ev_free (anfds); anfdmax = 0;	1469	ev_free (anfds); anfdmax = 0;
1415		1470
1416	/* have to use the microsoft-never-gets-it-right macro */	1471	/* have to use the microsoft-never-gets-it-right macro */
		1472	array_free (rfeed, EMPTY);
1417	array_free (fdchange, EMPTY);	1473	array_free (fdchange, EMPTY);
1418	array_free (timer, EMPTY);	1474	array_free (timer, EMPTY);
1419	#if EV_PERIODIC_ENABLE	1475	#if EV_PERIODIC_ENABLE
1420	array_free (periodic, EMPTY);	1476	array_free (periodic, EMPTY);
1421	#endif	1477	#endif
…		…
1430		1486
1431	backend = 0;	1487	backend = 0;
1432	}	1488	}
1433		1489
1434	#if EV_USE_INOTIFY	1490	#if EV_USE_INOTIFY
1435	void inline_size infy_fork (EV_P);	1491	inline_size void infy_fork (EV_P);
1436	#endif	1492	#endif
1437		1493
1438	void inline_size	1494	inline_size void
1439	loop_fork (EV_P)	1495	loop_fork (EV_P)
1440	{	1496	{
1441	#if EV_USE_PORT	1497	#if EV_USE_PORT
1442	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1498	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1443	#endif	1499	#endif
…		…
1514		1570
1515	#if EV_VERIFY	1571	#if EV_VERIFY
1516	static void noinline	1572	static void noinline
1517	verify_watcher (EV_P_ W w)	1573	verify_watcher (EV_P_ W w)
1518	{	1574	{
1519	assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));	1575	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1520		1576
1521	if (w->pending)	1577	if (w->pending)
1522	assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));	1578	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1523	}	1579	}
1524		1580
1525	static void noinline	1581	static void noinline
1526	verify_heap (EV_P_ ANHE *heap, int N)	1582	verify_heap (EV_P_ ANHE *heap, int N)
1527	{	1583	{
1528	int i;	1584	int i;
1529		1585
1530	for (i = HEAP0; i < N + HEAP0; ++i)	1586	for (i = HEAP0; i < N + HEAP0; ++i)
1531	{	1587	{
1532	assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));	1588	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1533	assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));	1589	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1534	assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));	1590	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1535		1591
1536	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));	1592	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1537	}	1593	}
1538	}	1594	}
1539		1595
1540	static void noinline	1596	static void noinline
1541	array_verify (EV_P_ W *ws, int cnt)	1597	array_verify (EV_P_ W *ws, int cnt)
1542	{	1598	{
1543	while (cnt--)	1599	while (cnt--)
1544	{	1600	{
1545	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));	1601	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1546	verify_watcher (EV_A_ ws [cnt]);	1602	verify_watcher (EV_A_ ws [cnt]);
1547	}	1603	}
1548	}	1604	}
1549	#endif	1605	#endif
1550		1606
…		…
1557		1613
1558	assert (activecnt >= -1);	1614	assert (activecnt >= -1);
1559		1615
1560	assert (fdchangemax >= fdchangecnt);	1616	assert (fdchangemax >= fdchangecnt);
1561	for (i = 0; i < fdchangecnt; ++i)	1617	for (i = 0; i < fdchangecnt; ++i)
1562	assert (("negative fd in fdchanges", fdchanges [i] >= 0));	1618	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1563		1619
1564	assert (anfdmax >= 0);	1620	assert (anfdmax >= 0);
1565	for (i = 0; i < anfdmax; ++i)	1621	for (i = 0; i < anfdmax; ++i)
1566	for (w = anfds [i].head; w; w = w->next)	1622	for (w = anfds [i].head; w; w = w->next)
1567	{	1623	{
1568	verify_watcher (EV_A_ (W)w);	1624	verify_watcher (EV_A_ (W)w);
1569	assert (("inactive fd watcher on anfd list", ev_active (w) == 1));	1625	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1570	assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));	1626	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1571	}	1627	}
1572		1628
1573	assert (timermax >= timercnt);	1629	assert (timermax >= timercnt);
1574	verify_heap (EV_A_ timers, timercnt);	1630	verify_heap (EV_A_ timers, timercnt);
1575		1631
…		…
1652	{	1708	{
1653	#if EV_MULTIPLICITY	1709	#if EV_MULTIPLICITY
1654	struct ev_loop *loop = ev_default_loop_ptr;	1710	struct ev_loop *loop = ev_default_loop_ptr;
1655	#endif	1711	#endif
1656		1712
		1713	ev_default_loop_ptr = 0;
		1714
1657	#ifndef _WIN32	1715	#ifndef _WIN32
1658	ev_ref (EV_A); /* child watcher */	1716	ev_ref (EV_A); /* child watcher */
1659	ev_signal_stop (EV_A_ &childev);	1717	ev_signal_stop (EV_A_ &childev);
1660	#endif	1718	#endif
1661		1719
…		…
1667	{	1725	{
1668	#if EV_MULTIPLICITY	1726	#if EV_MULTIPLICITY
1669	struct ev_loop *loop = ev_default_loop_ptr;	1727	struct ev_loop *loop = ev_default_loop_ptr;
1670	#endif	1728	#endif
1671		1729
1672	if (backend)
1673	postfork = 1; /* must be in line with ev_loop_fork */	1730	postfork = 1; /* must be in line with ev_loop_fork */
1674	}	1731	}
1675		1732
1676	/*****************************************************************************/	1733	/*****************************************************************************/
1677		1734
1678	void	1735	void
1679	ev_invoke (EV_P_ void *w, int revents)	1736	ev_invoke (EV_P_ void *w, int revents)
1680	{	1737	{
1681	EV_CB_INVOKE ((W)w, revents);	1738	EV_CB_INVOKE ((W)w, revents);
1682	}	1739	}
1683		1740
1684	void inline_speed	1741	inline_speed void
1685	call_pending (EV_P)	1742	call_pending (EV_P)
1686	{	1743	{
1687	int pri;	1744	int pri;
1688		1745
1689	for (pri = NUMPRI; pri--; )	1746	for (pri = NUMPRI; pri--; )
…		…
1691	{	1748	{
1692	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1749	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1693		1750
1694	if (expect_true (p->w))	1751	if (expect_true (p->w))
1695	{	1752	{
1696	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1753	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1697		1754
1698	p->w->pending = 0;	1755	p->w->pending = 0;
1699	EV_CB_INVOKE (p->w, p->events);	1756	EV_CB_INVOKE (p->w, p->events);
1700	EV_FREQUENT_CHECK;	1757	EV_FREQUENT_CHECK;
1701	}	1758	}
1702	}	1759	}
1703	}	1760	}
1704		1761
1705	#if EV_IDLE_ENABLE	1762	#if EV_IDLE_ENABLE
1706	void inline_size	1763	inline_size void
1707	idle_reify (EV_P)	1764	idle_reify (EV_P)
1708	{	1765	{
1709	if (expect_false (idleall))	1766	if (expect_false (idleall))
1710	{	1767	{
1711	int pri;	1768	int pri;
…		…
1723	}	1780	}
1724	}	1781	}
1725	}	1782	}
1726	#endif	1783	#endif
1727		1784
1728	void inline_size	1785	inline_size void
1729	timers_reify (EV_P)	1786	timers_reify (EV_P)
1730	{	1787	{
1731	EV_FREQUENT_CHECK;	1788	EV_FREQUENT_CHECK;
1732		1789
1733	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	1790	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1734	{	1791	{
1735	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	1792	do
1736
1737	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1738
1739	/* first reschedule or stop timer */
1740	if (w->repeat)
1741	{	1793	{
		1794	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1795
		1796	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		1797
		1798	/* first reschedule or stop timer */
		1799	if (w->repeat)
		1800	{
1742	ev_at (w) += w->repeat;	1801	ev_at (w) += w->repeat;
1743	if (ev_at (w) < mn_now)	1802	if (ev_at (w) < mn_now)
1744	ev_at (w) = mn_now;	1803	ev_at (w) = mn_now;
1745		1804
1746	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1805	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1747		1806
1748	ANHE_at_cache (timers [HEAP0]);	1807	ANHE_at_cache (timers [HEAP0]);
1749	downheap (timers, timercnt, HEAP0);	1808	downheap (timers, timercnt, HEAP0);
		1809	}
		1810	else
		1811	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1812
		1813	EV_FREQUENT_CHECK;
		1814	feed_reverse (EV_A_ (W)w);
1750	}	1815	}
1751	else	1816	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1752	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1753		1817
1754	EV_FREQUENT_CHECK;
1755	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1818	feed_reverse_done (EV_A_ EV_TIMEOUT);
1756	}	1819	}
1757	}	1820	}
1758		1821
1759	#if EV_PERIODIC_ENABLE	1822	#if EV_PERIODIC_ENABLE
1760	void inline_size	1823	inline_size void
1761	periodics_reify (EV_P)	1824	periodics_reify (EV_P)
1762	{	1825	{
1763	EV_FREQUENT_CHECK;	1826	EV_FREQUENT_CHECK;
1764		1827
1765	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	1828	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1766	{	1829	{
1767	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	1830	int feed_count = 0;
1768		1831
1769	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	1832	do
1770
1771	/* first reschedule or stop timer */
1772	if (w->reschedule_cb)
1773	{	1833	{
		1834	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1835
		1836	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		1837
		1838	/* first reschedule or stop timer */
		1839	if (w->reschedule_cb)
		1840	{
1774	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1841	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1775		1842
1776	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));	1843	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1777		1844
1778	ANHE_at_cache (periodics [HEAP0]);	1845	ANHE_at_cache (periodics [HEAP0]);
1779	downheap (periodics, periodiccnt, HEAP0);	1846	downheap (periodics, periodiccnt, HEAP0);
		1847	}
		1848	else if (w->interval)
		1849	{
		1850	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1851	/* if next trigger time is not sufficiently in the future, put it there */
		1852	/* this might happen because of floating point inexactness */
		1853	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1854	{
		1855	ev_at (w) += w->interval;
		1856
		1857	/* if interval is unreasonably low we might still have a time in the past */
		1858	/* so correct this. this will make the periodic very inexact, but the user */
		1859	/* has effectively asked to get triggered more often than possible */
		1860	if (ev_at (w) < ev_rt_now)
		1861	ev_at (w) = ev_rt_now;
		1862	}
		1863
		1864	ANHE_at_cache (periodics [HEAP0]);
		1865	downheap (periodics, periodiccnt, HEAP0);
		1866	}
		1867	else
		1868	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1869
		1870	EV_FREQUENT_CHECK;
		1871	feed_reverse (EV_A_ (W)w);
1780	}	1872	}
1781	else if (w->interval)	1873	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1782	{
1783	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1784	/* if next trigger time is not sufficiently in the future, put it there */
1785	/* this might happen because of floating point inexactness */
1786	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1787	{
1788	ev_at (w) += w->interval;
1789		1874
1790	/* if interval is unreasonably low we might still have a time in the past */
1791	/* so correct this. this will make the periodic very inexact, but the user */
1792	/* has effectively asked to get triggered more often than possible */
1793	if (ev_at (w) < ev_rt_now)
1794	ev_at (w) = ev_rt_now;
1795	}
1796
1797	ANHE_at_cache (periodics [HEAP0]);
1798	downheap (periodics, periodiccnt, HEAP0);
1799	}
1800	else
1801	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1802
1803	EV_FREQUENT_CHECK;
1804	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1875	feed_reverse_done (EV_A_ EV_PERIODIC);
1805	}	1876	}
1806	}	1877	}
1807		1878
1808	static void noinline	1879	static void noinline
1809	periodics_reschedule (EV_P)	1880	periodics_reschedule (EV_P)
…		…
1825		1896
1826	reheap (periodics, periodiccnt);	1897	reheap (periodics, periodiccnt);
1827	}	1898	}
1828	#endif	1899	#endif
1829		1900
1830	void inline_speed	1901	static void noinline
		1902	timers_reschedule (EV_P_ ev_tstamp adjust)
		1903	{
		1904	int i;
		1905
		1906	for (i = 0; i < timercnt; ++i)
		1907	{
		1908	ANHE *he = timers + i + HEAP0;
		1909	ANHE_w (*he)->at += adjust;
		1910	ANHE_at_cache (*he);
		1911	}
		1912	}
		1913
		1914	inline_speed void
1831	time_update (EV_P_ ev_tstamp max_block)	1915	time_update (EV_P_ ev_tstamp max_block)
1832	{	1916	{
1833	int i;	1917	int i;
1834		1918
1835	#if EV_USE_MONOTONIC	1919	#if EV_USE_MONOTONIC
…		…
1868	ev_rt_now = ev_time ();	1952	ev_rt_now = ev_time ();
1869	mn_now = get_clock ();	1953	mn_now = get_clock ();
1870	now_floor = mn_now;	1954	now_floor = mn_now;
1871	}	1955	}
1872		1956
		1957	/* no timer adjustment, as the monotonic clock doesn't jump */
		1958	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1873	# if EV_PERIODIC_ENABLE	1959	# if EV_PERIODIC_ENABLE
1874	periodics_reschedule (EV_A);	1960	periodics_reschedule (EV_A);
1875	# endif	1961	# endif
1876	/* no timer adjustment, as the monotonic clock doesn't jump */
1877	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1878	}	1962	}
1879	else	1963	else
1880	#endif	1964	#endif
1881	{	1965	{
1882	ev_rt_now = ev_time ();	1966	ev_rt_now = ev_time ();
1883		1967
1884	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	1968	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1885	{	1969	{
		1970	/* adjust timers. this is easy, as the offset is the same for all of them */
		1971	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1886	#if EV_PERIODIC_ENABLE	1972	#if EV_PERIODIC_ENABLE
1887	periodics_reschedule (EV_A);	1973	periodics_reschedule (EV_A);
1888	#endif	1974	#endif
1889	/* adjust timers. this is easy, as the offset is the same for all of them */
1890	for (i = 0; i < timercnt; ++i)
1891	{
1892	ANHE *he = timers + i + HEAP0;
1893	ANHE_w (*he)->at += ev_rt_now - mn_now;
1894	ANHE_at_cache (*he);
1895	}
1896	}	1975	}
1897		1976
1898	mn_now = ev_rt_now;	1977	mn_now = ev_rt_now;
1899	}	1978	}
1900	}
1901
1902	void
1903	ev_ref (EV_P)
1904	{
1905	++activecnt;
1906	}
1907
1908	void
1909	ev_unref (EV_P)
1910	{
1911	--activecnt;
1912	}	1979	}
1913		1980
1914	static int loop_done;	1981	static int loop_done;
1915		1982
1916	void	1983	void
…		…
1950	{	2017	{
1951	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2018	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1952	call_pending (EV_A);	2019	call_pending (EV_A);
1953	}	2020	}
1954		2021
1955	if (expect_false (!activecnt))
1956	break;
1957
1958	/* we might have forked, so reify kernel state if necessary */	2022	/* we might have forked, so reify kernel state if necessary */
1959	if (expect_false (postfork))	2023	if (expect_false (postfork))
1960	loop_fork (EV_A);	2024	loop_fork (EV_A);
1961		2025
1962	/* update fd-related kernel structures */	2026	/* update fd-related kernel structures */
…		…
2041	ev_unloop (EV_P_ int how)	2105	ev_unloop (EV_P_ int how)
2042	{	2106	{
2043	loop_done = how;	2107	loop_done = how;
2044	}	2108	}
2045		2109
		2110	void
		2111	ev_ref (EV_P)
		2112	{
		2113	++activecnt;
		2114	}
		2115
		2116	void
		2117	ev_unref (EV_P)
		2118	{
		2119	--activecnt;
		2120	}
		2121
		2122	void
		2123	ev_now_update (EV_P)
		2124	{
		2125	time_update (EV_A_ 1e100);
		2126	}
		2127
		2128	void
		2129	ev_suspend (EV_P)
		2130	{
		2131	ev_now_update (EV_A);
		2132	}
		2133
		2134	void
		2135	ev_resume (EV_P)
		2136	{
		2137	ev_tstamp mn_prev = mn_now;
		2138
		2139	ev_now_update (EV_A);
		2140	timers_reschedule (EV_A_ mn_now - mn_prev);
		2141	#if EV_PERIODIC_ENABLE
		2142	periodics_reschedule (EV_A);
		2143	#endif
		2144	}
		2145
2046	/*****************************************************************************/	2146	/*****************************************************************************/
2047		2147
2048	void inline_size	2148	inline_size void
2049	wlist_add (WL *head, WL elem)	2149	wlist_add (WL *head, WL elem)
2050	{	2150	{
2051	elem->next = *head;	2151	elem->next = *head;
2052	*head = elem;	2152	*head = elem;
2053	}	2153	}
2054		2154
2055	void inline_size	2155	inline_size void
2056	wlist_del (WL *head, WL elem)	2156	wlist_del (WL *head, WL elem)
2057	{	2157	{
2058	while (*head)	2158	while (*head)
2059	{	2159	{
2060	if (*head == elem)	2160	if (*head == elem)
…		…
2065		2165
2066	head = &(*head)->next;	2166	head = &(*head)->next;
2067	}	2167	}
2068	}	2168	}
2069		2169
2070	void inline_speed	2170	inline_speed void
2071	clear_pending (EV_P_ W w)	2171	clear_pending (EV_P_ W w)
2072	{	2172	{
2073	if (w->pending)	2173	if (w->pending)
2074	{	2174	{
2075	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2175	pendings [ABSPRI (w)][w->pending - 1].w = 0;
…		…
2092	}	2192	}
2093	else	2193	else
2094	return 0;	2194	return 0;
2095	}	2195	}
2096		2196
2097	void inline_size	2197	inline_size void
2098	pri_adjust (EV_P_ W w)	2198	pri_adjust (EV_P_ W w)
2099	{	2199	{
2100	int pri = w->priority;	2200	int pri = w->priority;
2101	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2201	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2102	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2202	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2103	w->priority = pri;	2203	w->priority = pri;
2104	}	2204	}
2105		2205
2106	void inline_speed	2206	inline_speed void
2107	ev_start (EV_P_ W w, int active)	2207	ev_start (EV_P_ W w, int active)
2108	{	2208	{
2109	pri_adjust (EV_A_ w);	2209	pri_adjust (EV_A_ w);
2110	w->active = active;	2210	w->active = active;
2111	ev_ref (EV_A);	2211	ev_ref (EV_A);
2112	}	2212	}
2113		2213
2114	void inline_size	2214	inline_size void
2115	ev_stop (EV_P_ W w)	2215	ev_stop (EV_P_ W w)
2116	{	2216	{
2117	ev_unref (EV_A);	2217	ev_unref (EV_A);
2118	w->active = 0;	2218	w->active = 0;
2119	}	2219	}
…		…
2126	int fd = w->fd;	2226	int fd = w->fd;
2127		2227
2128	if (expect_false (ev_is_active (w)))	2228	if (expect_false (ev_is_active (w)))
2129	return;	2229	return;
2130		2230
2131	assert (("ev_io_start called with negative fd", fd >= 0));	2231	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2232	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2132		2233
2133	EV_FREQUENT_CHECK;	2234	EV_FREQUENT_CHECK;
2134		2235
2135	ev_start (EV_A_ (W)w, 1);	2236	ev_start (EV_A_ (W)w, 1);
2136	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2237	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2137	wlist_add (&anfds[fd].head, (WL)w);	2238	wlist_add (&anfds[fd].head, (WL)w);
2138		2239
2139	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2240	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
2140	w->events &= ~EV_IOFDSET;	2241	w->events &= ~EV__IOFDSET;
2141		2242
2142	EV_FREQUENT_CHECK;	2243	EV_FREQUENT_CHECK;
2143	}	2244	}
2144		2245
2145	void noinline	2246	void noinline
…		…
2147	{	2248	{
2148	clear_pending (EV_A_ (W)w);	2249	clear_pending (EV_A_ (W)w);
2149	if (expect_false (!ev_is_active (w)))	2250	if (expect_false (!ev_is_active (w)))
2150	return;	2251	return;
2151		2252
2152	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2253	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2153		2254
2154	EV_FREQUENT_CHECK;	2255	EV_FREQUENT_CHECK;
2155		2256
2156	wlist_del (&anfds[w->fd].head, (WL)w);	2257	wlist_del (&anfds[w->fd].head, (WL)w);
2157	ev_stop (EV_A_ (W)w);	2258	ev_stop (EV_A_ (W)w);
…		…
2167	if (expect_false (ev_is_active (w)))	2268	if (expect_false (ev_is_active (w)))
2168	return;	2269	return;
2169		2270
2170	ev_at (w) += mn_now;	2271	ev_at (w) += mn_now;
2171		2272
2172	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2273	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2173		2274
2174	EV_FREQUENT_CHECK;	2275	EV_FREQUENT_CHECK;
2175		2276
2176	++timercnt;	2277	++timercnt;
2177	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);	2278	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
…		…
2180	ANHE_at_cache (timers [ev_active (w)]);	2281	ANHE_at_cache (timers [ev_active (w)]);
2181	upheap (timers, ev_active (w));	2282	upheap (timers, ev_active (w));
2182		2283
2183	EV_FREQUENT_CHECK;	2284	EV_FREQUENT_CHECK;
2184		2285
2185	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2286	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2186	}	2287	}
2187		2288
2188	void noinline	2289	void noinline
2189	ev_timer_stop (EV_P_ ev_timer *w)	2290	ev_timer_stop (EV_P_ ev_timer *w)
2190	{	2291	{
…		…
2195	EV_FREQUENT_CHECK;	2296	EV_FREQUENT_CHECK;
2196		2297
2197	{	2298	{
2198	int active = ev_active (w);	2299	int active = ev_active (w);
2199		2300
2200	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2301	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2201		2302
2202	--timercnt;	2303	--timercnt;
2203		2304
2204	if (expect_true (active < timercnt + HEAP0))	2305	if (expect_true (active < timercnt + HEAP0))
2205	{	2306	{
…		…
2249		2350
2250	if (w->reschedule_cb)	2351	if (w->reschedule_cb)
2251	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2352	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2252	else if (w->interval)	2353	else if (w->interval)
2253	{	2354	{
2254	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2355	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2255	/* this formula differs from the one in periodic_reify because we do not always round up */	2356	/* this formula differs from the one in periodic_reify because we do not always round up */
2256	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2357	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2257	}	2358	}
2258	else	2359	else
2259	ev_at (w) = w->offset;	2360	ev_at (w) = w->offset;
…		…
2267	ANHE_at_cache (periodics [ev_active (w)]);	2368	ANHE_at_cache (periodics [ev_active (w)]);
2268	upheap (periodics, ev_active (w));	2369	upheap (periodics, ev_active (w));
2269		2370
2270	EV_FREQUENT_CHECK;	2371	EV_FREQUENT_CHECK;
2271		2372
2272	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2373	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2273	}	2374	}
2274		2375
2275	void noinline	2376	void noinline
2276	ev_periodic_stop (EV_P_ ev_periodic *w)	2377	ev_periodic_stop (EV_P_ ev_periodic *w)
2277	{	2378	{
…		…
2282	EV_FREQUENT_CHECK;	2383	EV_FREQUENT_CHECK;
2283		2384
2284	{	2385	{
2285	int active = ev_active (w);	2386	int active = ev_active (w);
2286		2387
2287	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2388	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2288		2389
2289	--periodiccnt;	2390	--periodiccnt;
2290		2391
2291	if (expect_true (active < periodiccnt + HEAP0))	2392	if (expect_true (active < periodiccnt + HEAP0))
2292	{	2393	{
…		…
2315		2416
2316	void noinline	2417	void noinline
2317	ev_signal_start (EV_P_ ev_signal *w)	2418	ev_signal_start (EV_P_ ev_signal *w)
2318	{	2419	{
2319	#if EV_MULTIPLICITY	2420	#if EV_MULTIPLICITY
2320	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2421	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2321	#endif	2422	#endif
2322	if (expect_false (ev_is_active (w)))	2423	if (expect_false (ev_is_active (w)))
2323	return;	2424	return;
2324		2425
2325	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2426	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2326		2427
2327	evpipe_init (EV_A);	2428	evpipe_init (EV_A);
2328		2429
2329	EV_FREQUENT_CHECK;	2430	EV_FREQUENT_CHECK;
2330		2431
…		…
2333	sigset_t full, prev;	2434	sigset_t full, prev;
2334	sigfillset (&full);	2435	sigfillset (&full);
2335	sigprocmask (SIG_SETMASK, &full, &prev);	2436	sigprocmask (SIG_SETMASK, &full, &prev);
2336	#endif	2437	#endif
2337		2438
2338	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2439	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2339		2440
2340	#ifndef _WIN32	2441	#ifndef _WIN32
2341	sigprocmask (SIG_SETMASK, &prev, 0);	2442	sigprocmask (SIG_SETMASK, &prev, 0);
2342	#endif	2443	#endif
2343	}	2444	}
…		…
2381		2482
2382	void	2483	void
2383	ev_child_start (EV_P_ ev_child *w)	2484	ev_child_start (EV_P_ ev_child *w)
2384	{	2485	{
2385	#if EV_MULTIPLICITY	2486	#if EV_MULTIPLICITY
2386	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2487	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2387	#endif	2488	#endif
2388	if (expect_false (ev_is_active (w)))	2489	if (expect_false (ev_is_active (w)))
2389	return;	2490	return;
2390		2491
2391	EV_FREQUENT_CHECK;	2492	EV_FREQUENT_CHECK;
…		…
2416	# ifdef _WIN32	2517	# ifdef _WIN32
2417	# undef lstat	2518	# undef lstat
2418	# define lstat(a,b) _stati64 (a,b)	2519	# define lstat(a,b) _stati64 (a,b)
2419	# endif	2520	# endif
2420		2521
2421	#define DEF_STAT_INTERVAL 5.0074891	2522	#define DEF_STAT_INTERVAL 5.0074891
		2523	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2422	#define MIN_STAT_INTERVAL 0.1074891	2524	#define MIN_STAT_INTERVAL 0.1074891
2423		2525
2424	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2526	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2425		2527
2426	#if EV_USE_INOTIFY	2528	#if EV_USE_INOTIFY
2427	# define EV_INOTIFY_BUFSIZE 8192	2529	# define EV_INOTIFY_BUFSIZE 8192
…		…
2431	{	2533	{
2432	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);	2534	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);
2433		2535
2434	if (w->wd < 0)	2536	if (w->wd < 0)
2435	{	2537	{
		2538	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2436	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2539	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2437		2540
2438	/* monitor some parent directory for speedup hints */	2541	/* monitor some parent directory for speedup hints */
2439	/* note that exceeding the hardcoded limit is not a correctness issue, */	2542	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2440	/* but an efficiency issue only */	2543	/* but an efficiency issue only */
2441	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2544	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2442	{	2545	{
2443	char path [4096];	2546	char path [4096];
2444	strcpy (path, w->path);	2547	strcpy (path, w->path);
…		…
2448	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2551	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2449	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2552	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2450		2553
2451	char *pend = strrchr (path, '/');	2554	char *pend = strrchr (path, '/');
2452		2555
2453	if (!pend)	2556	if (!pend || pend == path)
2454	break; /* whoops, no '/', complain to your admin */	2557	break;
2455		2558
2456	*pend = 0;	2559	*pend = 0;
2457	w->wd = inotify_add_watch (fs_fd, path, mask);	2560	w->wd = inotify_add_watch (fs_fd, path, mask);
2458	}	2561	}
2459	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2562	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2460	}	2563	}
2461	}	2564	}
2462	else
2463	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2464		2565
2465	if (w->wd >= 0)	2566	if (w->wd >= 0)
		2567	{
2466	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2568	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2569
		2570	/* now local changes will be tracked by inotify, but remote changes won't */
		2571	/* unless the filesystem it known to be local, we therefore still poll */
		2572	/* also do poll on <2.6.25, but with normal frequency */
		2573	struct statfs sfs;
		2574
		2575	if (fs_2625 && !statfs (w->path, &sfs))
		2576	if (sfs.f_type == 0x1373 /* devfs */
		2577	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2578	|| sfs.f_type == 0x3153464a /* jfs */
		2579	|| sfs.f_type == 0x52654973 /* reiser3 */
		2580	|| sfs.f_type == 0x01021994 /* tempfs */
		2581	|| sfs.f_type == 0x58465342 /* xfs */)
		2582	return;
		2583
		2584	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2585	ev_timer_again (EV_A_ &w->timer);
		2586	}
2467	}	2587	}
2468		2588
2469	static void noinline	2589	static void noinline
2470	infy_del (EV_P_ ev_stat *w)	2590	infy_del (EV_P_ ev_stat *w)
2471	{	2591	{
…		…
2485		2605
2486	static void noinline	2606	static void noinline
2487	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2607	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2488	{	2608	{
2489	if (slot < 0)	2609	if (slot < 0)
2490	/* overflow, need to check for all hahs slots */	2610	/* overflow, need to check for all hash slots */
2491	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2611	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2492	infy_wd (EV_A_ slot, wd, ev);	2612	infy_wd (EV_A_ slot, wd, ev);
2493	else	2613	else
2494	{	2614	{
2495	WL w_;	2615	WL w_;
…		…
2501		2621
2502	if (w->wd == wd || wd == -1)	2622	if (w->wd == wd || wd == -1)
2503	{	2623	{
2504	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2624	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2505	{	2625	{
		2626	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2506	w->wd = -1;	2627	w->wd = -1;
2507	infy_add (EV_A_ w); /* re-add, no matter what */	2628	infy_add (EV_A_ w); /* re-add, no matter what */
2508	}	2629	}
2509		2630
2510	stat_timer_cb (EV_A_ &w->timer, 0);	2631	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2523		2644
2524	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2645	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2525	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2646	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2526	}	2647	}
2527		2648
2528	void inline_size	2649	inline_size void
		2650	check_2625 (EV_P)
		2651	{
		2652	/* kernels < 2.6.25 are borked
		2653	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2654	*/
		2655	struct utsname buf;
		2656	int major, minor, micro;
		2657
		2658	if (uname (&buf))
		2659	return;
		2660
		2661	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2662	return;
		2663
		2664	if (major < 2
		2665	|| (major == 2 && minor < 6)
		2666	|| (major == 2 && minor == 6 && micro < 25))
		2667	return;
		2668
		2669	fs_2625 = 1;
		2670	}
		2671
		2672	inline_size void
2529	infy_init (EV_P)	2673	infy_init (EV_P)
2530	{	2674	{
2531	if (fs_fd != -2)	2675	if (fs_fd != -2)
2532	return;	2676	return;
		2677
		2678	fs_fd = -1;
		2679
		2680	check_2625 (EV_A);
2533		2681
2534	fs_fd = inotify_init ();	2682	fs_fd = inotify_init ();
2535		2683
2536	if (fs_fd >= 0)	2684	if (fs_fd >= 0)
2537	{	2685	{
…		…
2539	ev_set_priority (&fs_w, EV_MAXPRI);	2687	ev_set_priority (&fs_w, EV_MAXPRI);
2540	ev_io_start (EV_A_ &fs_w);	2688	ev_io_start (EV_A_ &fs_w);
2541	}	2689	}
2542	}	2690	}
2543		2691
2544	void inline_size	2692	inline_size void
2545	infy_fork (EV_P)	2693	infy_fork (EV_P)
2546	{	2694	{
2547	int slot;	2695	int slot;
2548		2696
2549	if (fs_fd < 0)	2697	if (fs_fd < 0)
…		…
2565	w->wd = -1;	2713	w->wd = -1;
2566		2714
2567	if (fs_fd >= 0)	2715	if (fs_fd >= 0)
2568	infy_add (EV_A_ w); /* re-add, no matter what */	2716	infy_add (EV_A_ w); /* re-add, no matter what */
2569	else	2717	else
2570	ev_timer_start (EV_A_ &w->timer);	2718	ev_timer_again (EV_A_ &w->timer);
2571	}	2719	}
2572
2573	}	2720	}
2574	}	2721	}
2575		2722
2576	#endif	2723	#endif
2577		2724
…		…
2613	|| w->prev.st_atime != w->attr.st_atime	2760	|| w->prev.st_atime != w->attr.st_atime
2614	|| w->prev.st_mtime != w->attr.st_mtime	2761	|| w->prev.st_mtime != w->attr.st_mtime
2615	|| w->prev.st_ctime != w->attr.st_ctime	2762	|| w->prev.st_ctime != w->attr.st_ctime
2616	) {	2763	) {
2617	#if EV_USE_INOTIFY	2764	#if EV_USE_INOTIFY
		2765	if (fs_fd >= 0)
		2766	{
2618	infy_del (EV_A_ w);	2767	infy_del (EV_A_ w);
2619	infy_add (EV_A_ w);	2768	infy_add (EV_A_ w);
2620	ev_stat_stat (EV_A_ w); /* avoid race... */	2769	ev_stat_stat (EV_A_ w); /* avoid race... */
		2770	}
2621	#endif	2771	#endif
2622		2772
2623	ev_feed_event (EV_A_ w, EV_STAT);	2773	ev_feed_event (EV_A_ w, EV_STAT);
2624	}	2774	}
2625	}	2775	}
…		…
2628	ev_stat_start (EV_P_ ev_stat *w)	2778	ev_stat_start (EV_P_ ev_stat *w)
2629	{	2779	{
2630	if (expect_false (ev_is_active (w)))	2780	if (expect_false (ev_is_active (w)))
2631	return;	2781	return;
2632		2782
2633	/* since we use memcmp, we need to clear any padding data etc. */
2634	memset (&w->prev, 0, sizeof (ev_statdata));
2635	memset (&w->attr, 0, sizeof (ev_statdata));
2636
2637	ev_stat_stat (EV_A_ w);	2783	ev_stat_stat (EV_A_ w);
2638		2784
		2785	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2639	if (w->interval < MIN_STAT_INTERVAL)	2786	w->interval = MIN_STAT_INTERVAL;
2640	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2641		2787
2642	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2788	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2643	ev_set_priority (&w->timer, ev_priority (w));	2789	ev_set_priority (&w->timer, ev_priority (w));
2644		2790
2645	#if EV_USE_INOTIFY	2791	#if EV_USE_INOTIFY
2646	infy_init (EV_A);	2792	infy_init (EV_A);
2647		2793
2648	if (fs_fd >= 0)	2794	if (fs_fd >= 0)
2649	infy_add (EV_A_ w);	2795	infy_add (EV_A_ w);
2650	else	2796	else
2651	#endif	2797	#endif
2652	ev_timer_start (EV_A_ &w->timer);	2798	ev_timer_again (EV_A_ &w->timer);
2653		2799
2654	ev_start (EV_A_ (W)w, 1);	2800	ev_start (EV_A_ (W)w, 1);
2655		2801
2656	EV_FREQUENT_CHECK;	2802	EV_FREQUENT_CHECK;
2657	}	2803	}
…		…
2827	ev_loop (EV_A_ EVLOOP_NONBLOCK);	2973	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2828	}	2974	}
2829	}	2975	}
2830	}	2976	}
2831		2977
		2978	static void
		2979	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		2980	{
		2981	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		2982
		2983	ev_embed_stop (EV_A_ w);
		2984
		2985	{
		2986	struct ev_loop *loop = w->other;
		2987
		2988	ev_loop_fork (EV_A);
		2989	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2990	}
		2991
		2992	ev_embed_start (EV_A_ w);
		2993	}
		2994
2832	#if 0	2995	#if 0
2833	static void	2996	static void
2834	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	2997	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2835	{	2998	{
2836	ev_idle_stop (EV_A_ idle);	2999	ev_idle_stop (EV_A_ idle);
…		…
2843	if (expect_false (ev_is_active (w)))	3006	if (expect_false (ev_is_active (w)))
2844	return;	3007	return;
2845		3008
2846	{	3009	{
2847	struct ev_loop *loop = w->other;	3010	struct ev_loop *loop = w->other;
2848	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3011	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2849	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3012	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2850	}	3013	}
2851		3014
2852	EV_FREQUENT_CHECK;	3015	EV_FREQUENT_CHECK;
2853		3016
…		…
2856		3019
2857	ev_prepare_init (&w->prepare, embed_prepare_cb);	3020	ev_prepare_init (&w->prepare, embed_prepare_cb);
2858	ev_set_priority (&w->prepare, EV_MINPRI);	3021	ev_set_priority (&w->prepare, EV_MINPRI);
2859	ev_prepare_start (EV_A_ &w->prepare);	3022	ev_prepare_start (EV_A_ &w->prepare);
2860		3023
		3024	ev_fork_init (&w->fork, embed_fork_cb);
		3025	ev_fork_start (EV_A_ &w->fork);
		3026
2861	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3027	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2862		3028
2863	ev_start (EV_A_ (W)w, 1);	3029	ev_start (EV_A_ (W)w, 1);
2864		3030
2865	EV_FREQUENT_CHECK;	3031	EV_FREQUENT_CHECK;
…		…
2872	if (expect_false (!ev_is_active (w)))	3038	if (expect_false (!ev_is_active (w)))
2873	return;	3039	return;
2874		3040
2875	EV_FREQUENT_CHECK;	3041	EV_FREQUENT_CHECK;
2876		3042
2877	ev_io_stop (EV_A_ &w->io);	3043	ev_io_stop (EV_A_ &w->io);
2878	ev_prepare_stop (EV_A_ &w->prepare);	3044	ev_prepare_stop (EV_A_ &w->prepare);
2879		3045	ev_fork_stop (EV_A_ &w->fork);
2880	ev_stop (EV_A_ (W)w);
2881		3046
2882	EV_FREQUENT_CHECK;	3047	EV_FREQUENT_CHECK;
2883	}	3048	}
2884	#endif	3049	#endif
2885		3050
…		…
2992	}	3157	}
2993		3158
2994	static void	3159	static void
2995	once_cb_io (EV_P_ ev_io *w, int revents)	3160	once_cb_io (EV_P_ ev_io *w, int revents)
2996	{	3161	{
2997	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3162	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3163
		3164	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2998	}	3165	}
2999		3166
3000	static void	3167	static void
3001	once_cb_to (EV_P_ ev_timer *w, int revents)	3168	once_cb_to (EV_P_ ev_timer *w, int revents)
3002	{	3169	{
3003	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3170	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3171
		3172	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3004	}	3173	}
3005		3174
3006	void	3175	void
3007	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3176	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
3008	{	3177	{
…		…
3030	ev_timer_set (&once->to, timeout, 0.);	3199	ev_timer_set (&once->to, timeout, 0.);
3031	ev_timer_start (EV_A_ &once->to);	3200	ev_timer_start (EV_A_ &once->to);
3032	}	3201	}
3033	}	3202	}
3034		3203
		3204	/*****************************************************************************/
		3205
		3206	#if 0
		3207	void
		3208	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3209	{
		3210	int i, j;
		3211	ev_watcher_list *wl, *wn;
		3212
		3213	if (types & (EV_IO | EV_EMBED))
		3214	for (i = 0; i < anfdmax; ++i)
		3215	for (wl = anfds [i].head; wl; )
		3216	{
		3217	wn = wl->next;
		3218
		3219	#if EV_EMBED_ENABLE
		3220	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3221	{
		3222	if (types & EV_EMBED)
		3223	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3224	}
		3225	else
		3226	#endif
		3227	#if EV_USE_INOTIFY
		3228	if (ev_cb ((ev_io *)wl) == infy_cb)
		3229	;
		3230	else
		3231	#endif
		3232	if ((ev_io *)wl != &pipeev)
		3233	if (types & EV_IO)
		3234	cb (EV_A_ EV_IO, wl);
		3235
		3236	wl = wn;
		3237	}
		3238
		3239	if (types & (EV_TIMER | EV_STAT))
		3240	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3241	#if EV_STAT_ENABLE
		3242	/*TODO: timer is not always active*/
		3243	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3244	{
		3245	if (types & EV_STAT)
		3246	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3247	}
		3248	else
		3249	#endif
		3250	if (types & EV_TIMER)
		3251	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3252
		3253	#if EV_PERIODIC_ENABLE
		3254	if (types & EV_PERIODIC)
		3255	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3256	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3257	#endif
		3258
		3259	#if EV_IDLE_ENABLE
		3260	if (types & EV_IDLE)
		3261	for (j = NUMPRI; i--; )
		3262	for (i = idlecnt [j]; i--; )
		3263	cb (EV_A_ EV_IDLE, idles [j][i]);
		3264	#endif
		3265
		3266	#if EV_FORK_ENABLE
		3267	if (types & EV_FORK)
		3268	for (i = forkcnt; i--; )
		3269	if (ev_cb (forks [i]) != embed_fork_cb)
		3270	cb (EV_A_ EV_FORK, forks [i]);
		3271	#endif
		3272
		3273	#if EV_ASYNC_ENABLE
		3274	if (types & EV_ASYNC)
		3275	for (i = asynccnt; i--; )
		3276	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3277	#endif
		3278
		3279	if (types & EV_PREPARE)
		3280	for (i = preparecnt; i--; )
		3281	#if EV_EMBED_ENABLE
		3282	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3283	#endif
		3284	cb (EV_A_ EV_PREPARE, prepares [i]);
		3285
		3286	if (types & EV_CHECK)
		3287	for (i = checkcnt; i--; )
		3288	cb (EV_A_ EV_CHECK, checks [i]);
		3289
		3290	if (types & EV_SIGNAL)
		3291	for (i = 0; i < signalmax; ++i)
		3292	for (wl = signals [i].head; wl; )
		3293	{
		3294	wn = wl->next;
		3295	cb (EV_A_ EV_SIGNAL, wl);
		3296	wl = wn;
		3297	}
		3298
		3299	if (types & EV_CHILD)
		3300	for (i = EV_PID_HASHSIZE; i--; )
		3301	for (wl = childs [i]; wl; )
		3302	{
		3303	wn = wl->next;
		3304	cb (EV_A_ EV_CHILD, wl);
		3305	wl = wn;
		3306	}
		3307	/* EV_STAT 0x00001000 /* stat data changed */
		3308	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3309	}
		3310	#endif
		3311
3035	#if EV_MULTIPLICITY	3312	#if EV_MULTIPLICITY
3036	#include "ev_wrap.h"	3313	#include "ev_wrap.h"
3037	#endif	3314	#endif
3038		3315
3039	#ifdef __cplusplus	3316	#ifdef __cplusplus

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