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Comparing libev/ev.c (file contents):
Revision 1.253 by root, Sat May 31 03:13:27 2008 UTC vs.
Revision 1.285 by root, Wed Apr 15 19:35:53 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
…		…
154	#ifndef _WIN32	166	#ifndef _WIN32
155	# include <sys/time.h>	167	# include <sys/time.h>
156	# include <sys/wait.h>	168	# include <sys/wait.h>
157	# include <unistd.h>	169	# include <unistd.h>
158	#else	170	#else
		171	# include <io.h>
159	# define WIN32_LEAN_AND_MEAN	172	# define WIN32_LEAN_AND_MEAN
160	# include <windows.h>	173	# include <windows.h>
161	# ifndef EV_SELECT_IS_WINSOCKET	174	# ifndef EV_SELECT_IS_WINSOCKET
162	# define EV_SELECT_IS_WINSOCKET 1	175	# define EV_SELECT_IS_WINSOCKET 1
163	# endif	176	# endif
164	#endif	177	#endif
165		178
166	/* 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 */
		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
167		188
168	#ifndef EV_USE_MONOTONIC	189	#ifndef EV_USE_MONOTONIC
169	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0	190	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
170	# define EV_USE_MONOTONIC 1	191	# define EV_USE_MONOTONIC 1
171	# else	192	# else
172	# define EV_USE_MONOTONIC 0	193	# define EV_USE_MONOTONIC 0
173	# endif	194	# endif
174	#endif	195	#endif
175		196
176	#ifndef EV_USE_REALTIME	197	#ifndef EV_USE_REALTIME
177	# define EV_USE_REALTIME 0	198	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
178	#endif	199	#endif
179		200
180	#ifndef EV_USE_NANOSLEEP	201	#ifndef EV_USE_NANOSLEEP
181	# if _POSIX_C_SOURCE >= 199309L	202	# if _POSIX_C_SOURCE >= 199309L
182	# define EV_USE_NANOSLEEP 1	203	# define EV_USE_NANOSLEEP 1
…		…
285	# include <sys/select.h>	306	# include <sys/select.h>
286	# endif	307	# endif
287	#endif	308	#endif
288		309
289	#if EV_USE_INOTIFY	310	#if EV_USE_INOTIFY
		311	# include <sys/utsname.h>
		312	# include <sys/statfs.h>
290	# 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
291	#endif	319	#endif
292		320
293	#if EV_SELECT_IS_WINSOCKET	321	#if EV_SELECT_IS_WINSOCKET
294	# 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
295	#endif	332	#endif
296		333
297	#if EV_USE_EVENTFD	334	#if EV_USE_EVENTFD
298	/* 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 */
299	# include <stdint.h>	336	# include <stdint.h>
…		…
360	typedef ev_watcher_time *WT;	397	typedef ev_watcher_time *WT;
361		398
362	#define ev_active(w) ((W)(w))->active	399	#define ev_active(w) ((W)(w))->active
363	#define ev_at(w) ((WT)(w))->at	400	#define ev_at(w) ((WT)(w))->at
364		401
365	#if EV_USE_MONOTONIC	402	#if EV_USE_REALTIME
366	/* 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 */
367	/* 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
368	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? */
369	#endif	410	#endif
370		411
371	#ifdef _WIN32	412	#ifdef _WIN32
372	# include "ev_win32.c"	413	# include "ev_win32.c"
…		…
381	{	422	{
382	syserr_cb = cb;	423	syserr_cb = cb;
383	}	424	}
384		425
385	static void noinline	426	static void noinline
386	syserr (const char *msg)	427	ev_syserr (const char *msg)
387	{	428	{
388	if (!msg)	429	if (!msg)
389	msg = "(libev) system error";	430	msg = "(libev) system error";
390		431
391	if (syserr_cb)	432	if (syserr_cb)
…		…
442	typedef struct	483	typedef struct
443	{	484	{
444	WL head;	485	WL head;
445	unsigned char events;	486	unsigned char events;
446	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
447	#if EV_SELECT_IS_WINSOCKET	493	#if EV_SELECT_IS_WINSOCKET
448	SOCKET handle;	494	SOCKET handle;
449	#endif	495	#endif
450	} ANFD;	496	} ANFD;
451		497
…		…
511		557
512	ev_tstamp	558	ev_tstamp
513	ev_time (void)	559	ev_time (void)
514	{	560	{
515	#if EV_USE_REALTIME	561	#if EV_USE_REALTIME
		562	if (expect_true (have_realtime))
		563	{
516	struct timespec ts;	564	struct timespec ts;
517	clock_gettime (CLOCK_REALTIME, &ts);	565	clock_gettime (CLOCK_REALTIME, &ts);
518	return ts.tv_sec + ts.tv_nsec * 1e-9;	566	return ts.tv_sec + ts.tv_nsec * 1e-9;
519	#else	567	}
		568	#endif
		569
520	struct timeval tv;	570	struct timeval tv;
521	gettimeofday (&tv, 0);	571	gettimeofday (&tv, 0);
522	return tv.tv_sec + tv.tv_usec * 1e-6;	572	return tv.tv_sec + tv.tv_usec * 1e-6;
523	#endif
524	}	573	}
525		574
526	ev_tstamp inline_size	575	inline_size ev_tstamp
527	get_clock (void)	576	get_clock (void)
528	{	577	{
529	#if EV_USE_MONOTONIC	578	#if EV_USE_MONOTONIC
530	if (expect_true (have_monotonic))	579	if (expect_true (have_monotonic))
531	{	580	{
…		…
564	struct timeval tv;	613	struct timeval tv;
565		614
566	tv.tv_sec = (time_t)delay;	615	tv.tv_sec = (time_t)delay;
567	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	616	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
568		617
		618	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		619	/* somehting nto guaranteed by newer posix versions, but guaranteed */
		620	/* by older ones */
569	select (0, 0, 0, 0, &tv);	621	select (0, 0, 0, 0, &tv);
570	#endif	622	#endif
571	}	623	}
572	}	624	}
573		625
574	/*****************************************************************************/	626	/*****************************************************************************/
575		627
576	#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 */
577		629
578	int inline_size	630	inline_size int
579	array_nextsize (int elem, int cur, int cnt)	631	array_nextsize (int elem, int cur, int cnt)
580	{	632	{
581	int ncur = cur + 1;	633	int ncur = cur + 1;
582		634
583	do	635	do
…		…
600	array_realloc (int elem, void *base, int *cur, int cnt)	652	array_realloc (int elem, void *base, int *cur, int cnt)
601	{	653	{
602	*cur = array_nextsize (elem, *cur, cnt);	654	*cur = array_nextsize (elem, *cur, cnt);
603	return ev_realloc (base, elem * *cur);	655	return ev_realloc (base, elem * *cur);
604	}	656	}
		657
		658	#define array_init_zero(base,count) \
		659	memset ((void *)(base), 0, sizeof (*(base)) * (count))
605		660
606	#define array_needsize(type,base,cur,cnt,init) \	661	#define array_needsize(type,base,cur,cnt,init) \
607	if (expect_false ((cnt) > (cur))) \	662	if (expect_false ((cnt) > (cur))) \
608	{ \	663	{ \
609	int ocur_ = (cur); \	664	int ocur_ = (cur); \
…		…
621	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	676	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
622	}	677	}
623	#endif	678	#endif
624		679
625	#define array_free(stem, idx) \	680	#define array_free(stem, idx) \
626	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
627		682
628	/*****************************************************************************/	683	/*****************************************************************************/
629		684
630	void noinline	685	void noinline
631	ev_feed_event (EV_P_ void *w, int revents)	686	ev_feed_event (EV_P_ void *w, int revents)
…		…
642	pendings [pri][w_->pending - 1].w = w_;	697	pendings [pri][w_->pending - 1].w = w_;
643	pendings [pri][w_->pending - 1].events = revents;	698	pendings [pri][w_->pending - 1].events = revents;
644	}	699	}
645	}	700	}
646		701
647	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
648	queue_events (EV_P_ W *events, int eventcnt, int type)	718	queue_events (EV_P_ W *events, int eventcnt, int type)
649	{	719	{
650	int i;	720	int i;
651		721
652	for (i = 0; i < eventcnt; ++i)	722	for (i = 0; i < eventcnt; ++i)
653	ev_feed_event (EV_A_ events [i], type);	723	ev_feed_event (EV_A_ events [i], type);
654	}	724	}
655		725
656	/*****************************************************************************/	726	/*****************************************************************************/
657		727
658	void inline_size	728	inline_speed void
659	anfds_init (ANFD *base, int count)
660	{
661	while (count--)
662	{
663	base->head = 0;
664	base->events = EV_NONE;
665	base->reify = 0;
666
667	++base;
668	}
669	}
670
671	void inline_speed
672	fd_event (EV_P_ int fd, int revents)	729	fd_event (EV_P_ int fd, int revents)
673	{	730	{
674	ANFD *anfd = anfds + fd;	731	ANFD *anfd = anfds + fd;
675	ev_io *w;	732	ev_io *w;
676		733
…		…
688	{	745	{
689	if (fd >= 0 && fd < anfdmax)	746	if (fd >= 0 && fd < anfdmax)
690	fd_event (EV_A_ fd, revents);	747	fd_event (EV_A_ fd, revents);
691	}	748	}
692		749
693	void inline_size	750	inline_size void
694	fd_reify (EV_P)	751	fd_reify (EV_P)
695	{	752	{
696	int i;	753	int i;
697		754
698	for (i = 0; i < fdchangecnt; ++i)	755	for (i = 0; i < fdchangecnt; ++i)
…		…
707	events |= (unsigned char)w->events;	764	events |= (unsigned char)w->events;
708		765
709	#if EV_SELECT_IS_WINSOCKET	766	#if EV_SELECT_IS_WINSOCKET
710	if (events)	767	if (events)
711	{	768	{
712	unsigned long argp;	769	unsigned long arg;
713	#ifdef EV_FD_TO_WIN32_HANDLE	770	#ifdef EV_FD_TO_WIN32_HANDLE
714	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	771	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
715	#else	772	#else
716	anfd->handle = _get_osfhandle (fd);	773	anfd->handle = _get_osfhandle (fd);
717	#endif	774	#endif
718	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	775	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
719	}	776	}
720	#endif	777	#endif
721		778
722	{	779	{
723	unsigned char o_events = anfd->events;	780	unsigned char o_events = anfd->events;
724	unsigned char o_reify = anfd->reify;	781	unsigned char o_reify = anfd->reify;
725		782
726	anfd->reify = 0;	783	anfd->reify = 0;
727	anfd->events = events;	784	anfd->events = events;
728		785
729	if (o_events != events || o_reify & EV_IOFDSET)	786	if (o_events != events || o_reify & EV__IOFDSET)
730	backend_modify (EV_A_ fd, o_events, events);	787	backend_modify (EV_A_ fd, o_events, events);
731	}	788	}
732	}	789	}
733		790
734	fdchangecnt = 0;	791	fdchangecnt = 0;
735	}	792	}
736		793
737	void inline_size	794	inline_size void
738	fd_change (EV_P_ int fd, int flags)	795	fd_change (EV_P_ int fd, int flags)
739	{	796	{
740	unsigned char reify = anfds [fd].reify;	797	unsigned char reify = anfds [fd].reify;
741	anfds [fd].reify |= flags;	798	anfds [fd].reify |= flags;
742		799
…		…
746	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	803	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
747	fdchanges [fdchangecnt - 1] = fd;	804	fdchanges [fdchangecnt - 1] = fd;
748	}	805	}
749	}	806	}
750		807
751	void inline_speed	808	inline_speed void
752	fd_kill (EV_P_ int fd)	809	fd_kill (EV_P_ int fd)
753	{	810	{
754	ev_io *w;	811	ev_io *w;
755		812
756	while ((w = (ev_io *)anfds [fd].head))	813	while ((w = (ev_io *)anfds [fd].head))
…		…
758	ev_io_stop (EV_A_ w);	815	ev_io_stop (EV_A_ w);
759	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);
760	}	817	}
761	}	818	}
762		819
763	int inline_size	820	inline_size int
764	fd_valid (int fd)	821	fd_valid (int fd)
765	{	822	{
766	#ifdef _WIN32	823	#ifdef _WIN32
767	return _get_osfhandle (fd) != -1;	824	return _get_osfhandle (fd) != -1;
768	#else	825	#else
…		…
776	{	833	{
777	int fd;	834	int fd;
778		835
779	for (fd = 0; fd < anfdmax; ++fd)	836	for (fd = 0; fd < anfdmax; ++fd)
780	if (anfds [fd].events)	837	if (anfds [fd].events)
781	if (!fd_valid (fd) == -1 && errno == EBADF)	838	if (!fd_valid (fd) && errno == EBADF)
782	fd_kill (EV_A_ fd);	839	fd_kill (EV_A_ fd);
783	}	840	}
784		841
785	/* called on ENOMEM in select/poll to kill some fds and retry */	842	/* called on ENOMEM in select/poll to kill some fds and retry */
786	static void noinline	843	static void noinline
…		…
804		861
805	for (fd = 0; fd < anfdmax; ++fd)	862	for (fd = 0; fd < anfdmax; ++fd)
806	if (anfds [fd].events)	863	if (anfds [fd].events)
807	{	864	{
808	anfds [fd].events = 0;	865	anfds [fd].events = 0;
		866	anfds [fd].emask = 0;
809	fd_change (EV_A_ fd, EV_IOFDSET | 1);	867	fd_change (EV_A_ fd, EV__IOFDSET | 1);
810	}	868	}
811	}	869	}
812		870
813	/*****************************************************************************/	871	/*****************************************************************************/
814		872
…		…
830	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	888	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
831	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)	889	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
832	#define UPHEAP_DONE(p,k) ((p) == (k))	890	#define UPHEAP_DONE(p,k) ((p) == (k))
833		891
834	/* away from the root */	892	/* away from the root */
835	void inline_speed	893	inline_speed void
836	downheap (ANHE *heap, int N, int k)	894	downheap (ANHE *heap, int N, int k)
837	{	895	{
838	ANHE he = heap [k];	896	ANHE he = heap [k];
839	ANHE *E = heap + N + HEAP0;	897	ANHE *E = heap + N + HEAP0;
840		898
…		…
880	#define HEAP0 1	938	#define HEAP0 1
881	#define HPARENT(k) ((k) >> 1)	939	#define HPARENT(k) ((k) >> 1)
882	#define UPHEAP_DONE(p,k) (!(p))	940	#define UPHEAP_DONE(p,k) (!(p))
883		941
884	/* away from the root */	942	/* away from the root */
885	void inline_speed	943	inline_speed void
886	downheap (ANHE *heap, int N, int k)	944	downheap (ANHE *heap, int N, int k)
887	{	945	{
888	ANHE he = heap [k];	946	ANHE he = heap [k];
889		947
890	for (;;)	948	for (;;)
…		…
910	ev_active (ANHE_w (he)) = k;	968	ev_active (ANHE_w (he)) = k;
911	}	969	}
912	#endif	970	#endif
913		971
914	/* towards the root */	972	/* towards the root */
915	void inline_speed	973	inline_speed void
916	upheap (ANHE *heap, int k)	974	upheap (ANHE *heap, int k)
917	{	975	{
918	ANHE he = heap [k];	976	ANHE he = heap [k];
919		977
920	for (;;)	978	for (;;)
…		…
931		989
932	heap [k] = he;	990	heap [k] = he;
933	ev_active (ANHE_w (he)) = k;	991	ev_active (ANHE_w (he)) = k;
934	}	992	}
935		993
936	void inline_size	994	inline_size void
937	adjustheap (ANHE *heap, int N, int k)	995	adjustheap (ANHE *heap, int N, int k)
938	{	996	{
939	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]))
940	upheap (heap, k);	998	upheap (heap, k);
941	else	999	else
942	downheap (heap, N, k);	1000	downheap (heap, N, k);
943	}	1001	}
944		1002
945	/* 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 */
946	void inline_size	1004	inline_size void
947	reheap (ANHE *heap, int N)	1005	reheap (ANHE *heap, int N)
948	{	1006	{
949	int i;	1007	int i;
950		1008
951	/* 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 */
…		…
965	static ANSIG *signals;	1023	static ANSIG *signals;
966	static int signalmax;	1024	static int signalmax;
967		1025
968	static EV_ATOMIC_T gotsig;	1026	static EV_ATOMIC_T gotsig;
969		1027
970	void inline_size
971	signals_init (ANSIG *base, int count)
972	{
973	while (count--)
974	{
975	base->head = 0;
976	base->gotsig = 0;
977
978	++base;
979	}
980	}
981
982	/*****************************************************************************/	1028	/*****************************************************************************/
983		1029
984	void inline_speed	1030	inline_speed void
985	fd_intern (int fd)	1031	fd_intern (int fd)
986	{	1032	{
987	#ifdef _WIN32	1033	#ifdef _WIN32
988	int arg = 1;	1034	unsigned long arg = 1;
989	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1035	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
990	#else	1036	#else
991	fcntl (fd, F_SETFD, FD_CLOEXEC);	1037	fcntl (fd, F_SETFD, FD_CLOEXEC);
992	fcntl (fd, F_SETFL, O_NONBLOCK);	1038	fcntl (fd, F_SETFL, O_NONBLOCK);
993	#endif	1039	#endif
…		…
1007	}	1053	}
1008	else	1054	else
1009	#endif	1055	#endif
1010	{	1056	{
1011	while (pipe (evpipe))	1057	while (pipe (evpipe))
1012	syserr ("(libev) error creating signal/async pipe");	1058	ev_syserr ("(libev) error creating signal/async pipe");
1013		1059
1014	fd_intern (evpipe [0]);	1060	fd_intern (evpipe [0]);
1015	fd_intern (evpipe [1]);	1061	fd_intern (evpipe [1]);
1016	ev_io_set (&pipeev, evpipe [0], EV_READ);	1062	ev_io_set (&pipeev, evpipe [0], EV_READ);
1017	}	1063	}
…		…
1019	ev_io_start (EV_A_ &pipeev);	1065	ev_io_start (EV_A_ &pipeev);
1020	ev_unref (EV_A); /* watcher should not keep loop alive */	1066	ev_unref (EV_A); /* watcher should not keep loop alive */
1021	}	1067	}
1022	}	1068	}
1023		1069
1024	void inline_size	1070	inline_size void
1025	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1071	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1026	{	1072	{
1027	if (!*flag)	1073	if (!*flag)
1028	{	1074	{
1029	int old_errno = errno; /* save errno because write might clobber it */	1075	int old_errno = errno; /* save errno because write might clobber it */
…		…
1107	ev_feed_signal_event (EV_P_ int signum)	1153	ev_feed_signal_event (EV_P_ int signum)
1108	{	1154	{
1109	WL w;	1155	WL w;
1110		1156
1111	#if EV_MULTIPLICITY	1157	#if EV_MULTIPLICITY
1112	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));
1113	#endif	1159	#endif
1114		1160
1115	--signum;	1161	--signum;
1116		1162
1117	if (signum < 0 || signum >= signalmax)	1163	if (signum < 0 || signum >= signalmax)
…		…
1133		1179
1134	#ifndef WIFCONTINUED	1180	#ifndef WIFCONTINUED
1135	# define WIFCONTINUED(status) 0	1181	# define WIFCONTINUED(status) 0
1136	#endif	1182	#endif
1137		1183
1138	void inline_speed	1184	inline_speed void
1139	child_reap (EV_P_ int chain, int pid, int status)	1185	child_reap (EV_P_ int chain, int pid, int status)
1140	{	1186	{
1141	ev_child *w;	1187	ev_child *w;
1142	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1188	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1143		1189
…		…
1246	/* kqueue is borked on everything but netbsd apparently */	1292	/* kqueue is borked on everything but netbsd apparently */
1247	/* 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 */
1248	flags &= ~EVBACKEND_KQUEUE;	1294	flags &= ~EVBACKEND_KQUEUE;
1249	#endif	1295	#endif
1250	#ifdef __APPLE__	1296	#ifdef __APPLE__
1251	// flags &= ~EVBACKEND_KQUEUE; for documentation	1297	/* only select works correctly on that "unix-certified" platform */
1252	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 */
1253	#endif	1300	#endif
1254		1301
1255	return flags;	1302	return flags;
1256	}	1303	}
1257		1304
…		…
1294	static void noinline	1341	static void noinline
1295	loop_init (EV_P_ unsigned int flags)	1342	loop_init (EV_P_ unsigned int flags)
1296	{	1343	{
1297	if (!backend)	1344	if (!backend)
1298	{	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
1299	#if EV_USE_MONOTONIC	1356	#if EV_USE_MONOTONIC
		1357	if (!have_monotonic)
1300	{	1358	{
1301	struct timespec ts;	1359	struct timespec ts;
		1360
1302	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1361	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1303	have_monotonic = 1;	1362	have_monotonic = 1;
1304	}	1363	}
1305	#endif	1364	#endif
1306		1365
1307	ev_rt_now = ev_time ();	1366	ev_rt_now = ev_time ();
1308	mn_now = get_clock ();	1367	mn_now = get_clock ();
1309	now_floor = mn_now;	1368	now_floor = mn_now;
…		…
1408	}	1467	}
1409		1468
1410	ev_free (anfds); anfdmax = 0;	1469	ev_free (anfds); anfdmax = 0;
1411		1470
1412	/* 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);
1413	array_free (fdchange, EMPTY);	1473	array_free (fdchange, EMPTY);
1414	array_free (timer, EMPTY);	1474	array_free (timer, EMPTY);
1415	#if EV_PERIODIC_ENABLE	1475	#if EV_PERIODIC_ENABLE
1416	array_free (periodic, EMPTY);	1476	array_free (periodic, EMPTY);
1417	#endif	1477	#endif
…		…
1426		1486
1427	backend = 0;	1487	backend = 0;
1428	}	1488	}
1429		1489
1430	#if EV_USE_INOTIFY	1490	#if EV_USE_INOTIFY
1431	void inline_size infy_fork (EV_P);	1491	inline_size void infy_fork (EV_P);
1432	#endif	1492	#endif
1433		1493
1434	void inline_size	1494	inline_size void
1435	loop_fork (EV_P)	1495	loop_fork (EV_P)
1436	{	1496	{
1437	#if EV_USE_PORT	1497	#if EV_USE_PORT
1438	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1498	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1439	#endif	1499	#endif
…		…
1507	{	1567	{
1508	postfork = 1; /* must be in line with ev_default_fork */	1568	postfork = 1; /* must be in line with ev_default_fork */
1509	}	1569	}
1510		1570
1511	#if EV_VERIFY	1571	#if EV_VERIFY
1512	void noinline	1572	static void noinline
1513	verify_watcher (EV_P_ W w)	1573	verify_watcher (EV_P_ W w)
1514	{	1574	{
1515	assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));	1575	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1516		1576
1517	if (w->pending)	1577	if (w->pending)
1518	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));
1519	}	1579	}
1520		1580
1521	static void noinline	1581	static void noinline
1522	verify_heap (EV_P_ ANHE *heap, int N)	1582	verify_heap (EV_P_ ANHE *heap, int N)
1523	{	1583	{
1524	int i;	1584	int i;
1525		1585
1526	for (i = HEAP0; i < N + HEAP0; ++i)	1586	for (i = HEAP0; i < N + HEAP0; ++i)
1527	{	1587	{
1528	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));
1529	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])));
1530	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]))));
1531		1591
1532	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));	1592	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1533	}	1593	}
1534	}	1594	}
1535		1595
1536	static void noinline	1596	static void noinline
1537	array_verify (EV_P_ W *ws, int cnt)	1597	array_verify (EV_P_ W *ws, int cnt)
1538	{	1598	{
1539	while (cnt--)	1599	while (cnt--)
1540	{	1600	{
1541	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));	1601	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1542	verify_watcher (EV_A_ ws [cnt]);	1602	verify_watcher (EV_A_ ws [cnt]);
1543	}	1603	}
1544	}	1604	}
1545	#endif	1605	#endif
1546		1606
…		…
1553		1613
1554	assert (activecnt >= -1);	1614	assert (activecnt >= -1);
1555		1615
1556	assert (fdchangemax >= fdchangecnt);	1616	assert (fdchangemax >= fdchangecnt);
1557	for (i = 0; i < fdchangecnt; ++i)	1617	for (i = 0; i < fdchangecnt; ++i)
1558	assert (("negative fd in fdchanges", fdchanges [i] >= 0));	1618	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1559		1619
1560	assert (anfdmax >= 0);	1620	assert (anfdmax >= 0);
1561	for (i = 0; i < anfdmax; ++i)	1621	for (i = 0; i < anfdmax; ++i)
1562	for (w = anfds [i].head; w; w = w->next)	1622	for (w = anfds [i].head; w; w = w->next)
1563	{	1623	{
1564	verify_watcher (EV_A_ (W)w);	1624	verify_watcher (EV_A_ (W)w);
1565	assert (("inactive fd watcher on anfd list", ev_active (w) == 1));	1625	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1566	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));
1567	}	1627	}
1568		1628
1569	assert (timermax >= timercnt);	1629	assert (timermax >= timercnt);
1570	verify_heap (EV_A_ timers, timercnt);	1630	verify_heap (EV_A_ timers, timercnt);
1571		1631
…		…
1648	{	1708	{
1649	#if EV_MULTIPLICITY	1709	#if EV_MULTIPLICITY
1650	struct ev_loop *loop = ev_default_loop_ptr;	1710	struct ev_loop *loop = ev_default_loop_ptr;
1651	#endif	1711	#endif
1652		1712
		1713	ev_default_loop_ptr = 0;
		1714
1653	#ifndef _WIN32	1715	#ifndef _WIN32
1654	ev_ref (EV_A); /* child watcher */	1716	ev_ref (EV_A); /* child watcher */
1655	ev_signal_stop (EV_A_ &childev);	1717	ev_signal_stop (EV_A_ &childev);
1656	#endif	1718	#endif
1657		1719
…		…
1663	{	1725	{
1664	#if EV_MULTIPLICITY	1726	#if EV_MULTIPLICITY
1665	struct ev_loop *loop = ev_default_loop_ptr;	1727	struct ev_loop *loop = ev_default_loop_ptr;
1666	#endif	1728	#endif
1667		1729
1668	if (backend)
1669	postfork = 1; /* must be in line with ev_loop_fork */	1730	postfork = 1; /* must be in line with ev_loop_fork */
1670	}	1731	}
1671		1732
1672	/*****************************************************************************/	1733	/*****************************************************************************/
1673		1734
1674	void	1735	void
1675	ev_invoke (EV_P_ void *w, int revents)	1736	ev_invoke (EV_P_ void *w, int revents)
1676	{	1737	{
1677	EV_CB_INVOKE ((W)w, revents);	1738	EV_CB_INVOKE ((W)w, revents);
1678	}	1739	}
1679		1740
1680	void inline_speed	1741	inline_speed void
1681	call_pending (EV_P)	1742	call_pending (EV_P)
1682	{	1743	{
1683	int pri;	1744	int pri;
1684		1745
1685	for (pri = NUMPRI; pri--; )	1746	for (pri = NUMPRI; pri--; )
…		…
1687	{	1748	{
1688	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1749	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1689		1750
1690	if (expect_true (p->w))	1751	if (expect_true (p->w))
1691	{	1752	{
1692	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1753	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1693		1754
1694	p->w->pending = 0;	1755	p->w->pending = 0;
1695	EV_CB_INVOKE (p->w, p->events);	1756	EV_CB_INVOKE (p->w, p->events);
1696	EV_FREQUENT_CHECK;	1757	EV_FREQUENT_CHECK;
1697	}	1758	}
1698	}	1759	}
1699	}	1760	}
1700		1761
1701	#if EV_IDLE_ENABLE	1762	#if EV_IDLE_ENABLE
1702	void inline_size	1763	inline_size void
1703	idle_reify (EV_P)	1764	idle_reify (EV_P)
1704	{	1765	{
1705	if (expect_false (idleall))	1766	if (expect_false (idleall))
1706	{	1767	{
1707	int pri;	1768	int pri;
…		…
1719	}	1780	}
1720	}	1781	}
1721	}	1782	}
1722	#endif	1783	#endif
1723		1784
1724	void inline_size	1785	inline_size void
1725	timers_reify (EV_P)	1786	timers_reify (EV_P)
1726	{	1787	{
1727	EV_FREQUENT_CHECK;	1788	EV_FREQUENT_CHECK;
1728		1789
1729	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	1790	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1730	{	1791	{
1731	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	1792	do
1732
1733	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1734
1735	/* first reschedule or stop timer */
1736	if (w->repeat)
1737	{	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	{
1738	ev_at (w) += w->repeat;	1801	ev_at (w) += w->repeat;
1739	if (ev_at (w) < mn_now)	1802	if (ev_at (w) < mn_now)
1740	ev_at (w) = mn_now;	1803	ev_at (w) = mn_now;
1741		1804
1742	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.));
1743		1806
1744	ANHE_at_cache (timers [HEAP0]);	1807	ANHE_at_cache (timers [HEAP0]);
1745	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);
1746	}	1815	}
1747	else	1816	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1748	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1749		1817
1750	EV_FREQUENT_CHECK;
1751	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1818	feed_reverse_done (EV_A_ EV_TIMEOUT);
1752	}	1819	}
1753	}	1820	}
1754		1821
1755	#if EV_PERIODIC_ENABLE	1822	#if EV_PERIODIC_ENABLE
1756	void inline_size	1823	inline_size void
1757	periodics_reify (EV_P)	1824	periodics_reify (EV_P)
1758	{	1825	{
1759	EV_FREQUENT_CHECK;	1826	EV_FREQUENT_CHECK;
1760		1827
1761	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	1828	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1762	{	1829	{
1763	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	1830	int feed_count = 0;
1764		1831
1765	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	1832	do
1766
1767	/* first reschedule or stop timer */
1768	if (w->reschedule_cb)
1769	{	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	{
1770	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1841	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1771		1842
1772	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));
1773		1844
1774	ANHE_at_cache (periodics [HEAP0]);	1845	ANHE_at_cache (periodics [HEAP0]);
1775	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);
1776	}	1872	}
1777	else if (w->interval)	1873	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1778	{
1779	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1780	/* if next trigger time is not sufficiently in the future, put it there */
1781	/* this might happen because of floating point inexactness */
1782	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1783	{
1784	ev_at (w) += w->interval;
1785		1874
1786	/* if interval is unreasonably low we might still have a time in the past */
1787	/* so correct this. this will make the periodic very inexact, but the user */
1788	/* has effectively asked to get triggered more often than possible */
1789	if (ev_at (w) < ev_rt_now)
1790	ev_at (w) = ev_rt_now;
1791	}
1792
1793	ANHE_at_cache (periodics [HEAP0]);
1794	downheap (periodics, periodiccnt, HEAP0);
1795	}
1796	else
1797	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1798
1799	EV_FREQUENT_CHECK;
1800	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1875	feed_reverse_done (EV_A_ EV_PERIODIC);
1801	}	1876	}
1802	}	1877	}
1803		1878
1804	static void noinline	1879	static void noinline
1805	periodics_reschedule (EV_P)	1880	periodics_reschedule (EV_P)
…		…
1821		1896
1822	reheap (periodics, periodiccnt);	1897	reheap (periodics, periodiccnt);
1823	}	1898	}
1824	#endif	1899	#endif
1825		1900
1826	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
1827	time_update (EV_P_ ev_tstamp max_block)	1915	time_update (EV_P_ ev_tstamp max_block)
1828	{	1916	{
1829	int i;	1917	int i;
1830		1918
1831	#if EV_USE_MONOTONIC	1919	#if EV_USE_MONOTONIC
…		…
1864	ev_rt_now = ev_time ();	1952	ev_rt_now = ev_time ();
1865	mn_now = get_clock ();	1953	mn_now = get_clock ();
1866	now_floor = mn_now;	1954	now_floor = mn_now;
1867	}	1955	}
1868		1956
		1957	/* no timer adjustment, as the monotonic clock doesn't jump */
		1958	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1869	# if EV_PERIODIC_ENABLE	1959	# if EV_PERIODIC_ENABLE
1870	periodics_reschedule (EV_A);	1960	periodics_reschedule (EV_A);
1871	# endif	1961	# endif
1872	/* no timer adjustment, as the monotonic clock doesn't jump */
1873	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1874	}	1962	}
1875	else	1963	else
1876	#endif	1964	#endif
1877	{	1965	{
1878	ev_rt_now = ev_time ();	1966	ev_rt_now = ev_time ();
1879		1967
1880	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))
1881	{	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);
1882	#if EV_PERIODIC_ENABLE	1972	#if EV_PERIODIC_ENABLE
1883	periodics_reschedule (EV_A);	1973	periodics_reschedule (EV_A);
1884	#endif	1974	#endif
1885	/* adjust timers. this is easy, as the offset is the same for all of them */
1886	for (i = 0; i < timercnt; ++i)
1887	{
1888	ANHE *he = timers + i + HEAP0;
1889	ANHE_w (*he)->at += ev_rt_now - mn_now;
1890	ANHE_at_cache (*he);
1891	}
1892	}	1975	}
1893		1976
1894	mn_now = ev_rt_now;	1977	mn_now = ev_rt_now;
1895	}	1978	}
1896	}
1897
1898	void
1899	ev_ref (EV_P)
1900	{
1901	++activecnt;
1902	}
1903
1904	void
1905	ev_unref (EV_P)
1906	{
1907	--activecnt;
1908	}	1979	}
1909		1980
1910	static int loop_done;	1981	static int loop_done;
1911		1982
1912	void	1983	void
…		…
1946	{	2017	{
1947	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2018	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1948	call_pending (EV_A);	2019	call_pending (EV_A);
1949	}	2020	}
1950		2021
1951	if (expect_false (!activecnt))
1952	break;
1953
1954	/* we might have forked, so reify kernel state if necessary */	2022	/* we might have forked, so reify kernel state if necessary */
1955	if (expect_false (postfork))	2023	if (expect_false (postfork))
1956	loop_fork (EV_A);	2024	loop_fork (EV_A);
1957		2025
1958	/* update fd-related kernel structures */	2026	/* update fd-related kernel structures */
…		…
1965		2033
1966	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2034	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1967	{	2035	{
1968	/* update time to cancel out callback processing overhead */	2036	/* update time to cancel out callback processing overhead */
1969	time_update (EV_A_ 1e100);	2037	time_update (EV_A_ 1e100);
1970
1971	waittime = MAX_BLOCKTIME;
1972		2038
1973	if (timercnt)	2039	if (timercnt)
1974	{	2040	{
1975	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;	2041	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1976	if (waittime > to) waittime = to;	2042	if (waittime > to) waittime = to;
…		…
2037	ev_unloop (EV_P_ int how)	2103	ev_unloop (EV_P_ int how)
2038	{	2104	{
2039	loop_done = how;	2105	loop_done = how;
2040	}	2106	}
2041		2107
		2108	void
		2109	ev_ref (EV_P)
		2110	{
		2111	++activecnt;
		2112	}
		2113
		2114	void
		2115	ev_unref (EV_P)
		2116	{
		2117	--activecnt;
		2118	}
		2119
		2120	void
		2121	ev_now_update (EV_P)
		2122	{
		2123	time_update (EV_A_ 1e100);
		2124	}
		2125
		2126	void
		2127	ev_suspend (EV_P)
		2128	{
		2129	ev_now_update (EV_A);
		2130	}
		2131
		2132	void
		2133	ev_resume (EV_P)
		2134	{
		2135	ev_tstamp mn_prev = mn_now;
		2136
		2137	ev_now_update (EV_A);
		2138	printf ("update %f\n", mn_now - mn_prev);//D
		2139	timers_reschedule (EV_A_ mn_now - mn_prev);
		2140	periodics_reschedule (EV_A);
		2141	}
		2142
2042	/*****************************************************************************/	2143	/*****************************************************************************/
2043		2144
2044	void inline_size	2145	inline_size void
2045	wlist_add (WL *head, WL elem)	2146	wlist_add (WL *head, WL elem)
2046	{	2147	{
2047	elem->next = *head;	2148	elem->next = *head;
2048	*head = elem;	2149	*head = elem;
2049	}	2150	}
2050		2151
2051	void inline_size	2152	inline_size void
2052	wlist_del (WL *head, WL elem)	2153	wlist_del (WL *head, WL elem)
2053	{	2154	{
2054	while (*head)	2155	while (*head)
2055	{	2156	{
2056	if (*head == elem)	2157	if (*head == elem)
…		…
2061		2162
2062	head = &(*head)->next;	2163	head = &(*head)->next;
2063	}	2164	}
2064	}	2165	}
2065		2166
2066	void inline_speed	2167	inline_speed void
2067	clear_pending (EV_P_ W w)	2168	clear_pending (EV_P_ W w)
2068	{	2169	{
2069	if (w->pending)	2170	if (w->pending)
2070	{	2171	{
2071	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2172	pendings [ABSPRI (w)][w->pending - 1].w = 0;
…		…
2088	}	2189	}
2089	else	2190	else
2090	return 0;	2191	return 0;
2091	}	2192	}
2092		2193
2093	void inline_size	2194	inline_size void
2094	pri_adjust (EV_P_ W w)	2195	pri_adjust (EV_P_ W w)
2095	{	2196	{
2096	int pri = w->priority;	2197	int pri = w->priority;
2097	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2198	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2098	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2199	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2099	w->priority = pri;	2200	w->priority = pri;
2100	}	2201	}
2101		2202
2102	void inline_speed	2203	inline_speed void
2103	ev_start (EV_P_ W w, int active)	2204	ev_start (EV_P_ W w, int active)
2104	{	2205	{
2105	pri_adjust (EV_A_ w);	2206	pri_adjust (EV_A_ w);
2106	w->active = active;	2207	w->active = active;
2107	ev_ref (EV_A);	2208	ev_ref (EV_A);
2108	}	2209	}
2109		2210
2110	void inline_size	2211	inline_size void
2111	ev_stop (EV_P_ W w)	2212	ev_stop (EV_P_ W w)
2112	{	2213	{
2113	ev_unref (EV_A);	2214	ev_unref (EV_A);
2114	w->active = 0;	2215	w->active = 0;
2115	}	2216	}
…		…
2122	int fd = w->fd;	2223	int fd = w->fd;
2123		2224
2124	if (expect_false (ev_is_active (w)))	2225	if (expect_false (ev_is_active (w)))
2125	return;	2226	return;
2126		2227
2127	assert (("ev_io_start called with negative fd", fd >= 0));	2228	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2229	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2128		2230
2129	EV_FREQUENT_CHECK;	2231	EV_FREQUENT_CHECK;
2130		2232
2131	ev_start (EV_A_ (W)w, 1);	2233	ev_start (EV_A_ (W)w, 1);
2132	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2234	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2133	wlist_add (&anfds[fd].head, (WL)w);	2235	wlist_add (&anfds[fd].head, (WL)w);
2134		2236
2135	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2237	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
2136	w->events &= ~EV_IOFDSET;	2238	w->events &= ~EV__IOFDSET;
2137		2239
2138	EV_FREQUENT_CHECK;	2240	EV_FREQUENT_CHECK;
2139	}	2241	}
2140		2242
2141	void noinline	2243	void noinline
…		…
2143	{	2245	{
2144	clear_pending (EV_A_ (W)w);	2246	clear_pending (EV_A_ (W)w);
2145	if (expect_false (!ev_is_active (w)))	2247	if (expect_false (!ev_is_active (w)))
2146	return;	2248	return;
2147		2249
2148	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2250	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2149		2251
2150	EV_FREQUENT_CHECK;	2252	EV_FREQUENT_CHECK;
2151		2253
2152	wlist_del (&anfds[w->fd].head, (WL)w);	2254	wlist_del (&anfds[w->fd].head, (WL)w);
2153	ev_stop (EV_A_ (W)w);	2255	ev_stop (EV_A_ (W)w);
…		…
2163	if (expect_false (ev_is_active (w)))	2265	if (expect_false (ev_is_active (w)))
2164	return;	2266	return;
2165		2267
2166	ev_at (w) += mn_now;	2268	ev_at (w) += mn_now;
2167		2269
2168	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2270	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2169		2271
2170	EV_FREQUENT_CHECK;	2272	EV_FREQUENT_CHECK;
2171		2273
2172	++timercnt;	2274	++timercnt;
2173	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);	2275	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
…		…
2176	ANHE_at_cache (timers [ev_active (w)]);	2278	ANHE_at_cache (timers [ev_active (w)]);
2177	upheap (timers, ev_active (w));	2279	upheap (timers, ev_active (w));
2178		2280
2179	EV_FREQUENT_CHECK;	2281	EV_FREQUENT_CHECK;
2180		2282
2181	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2283	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2182	}	2284	}
2183		2285
2184	void noinline	2286	void noinline
2185	ev_timer_stop (EV_P_ ev_timer *w)	2287	ev_timer_stop (EV_P_ ev_timer *w)
2186	{	2288	{
…		…
2191	EV_FREQUENT_CHECK;	2293	EV_FREQUENT_CHECK;
2192		2294
2193	{	2295	{
2194	int active = ev_active (w);	2296	int active = ev_active (w);
2195		2297
2196	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2298	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2197		2299
2198	--timercnt;	2300	--timercnt;
2199		2301
2200	if (expect_true (active < timercnt + HEAP0))	2302	if (expect_true (active < timercnt + HEAP0))
2201	{	2303	{
…		…
2245		2347
2246	if (w->reschedule_cb)	2348	if (w->reschedule_cb)
2247	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2349	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2248	else if (w->interval)	2350	else if (w->interval)
2249	{	2351	{
2250	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2352	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2251	/* this formula differs from the one in periodic_reify because we do not always round up */	2353	/* this formula differs from the one in periodic_reify because we do not always round up */
2252	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2354	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2253	}	2355	}
2254	else	2356	else
2255	ev_at (w) = w->offset;	2357	ev_at (w) = w->offset;
…		…
2263	ANHE_at_cache (periodics [ev_active (w)]);	2365	ANHE_at_cache (periodics [ev_active (w)]);
2264	upheap (periodics, ev_active (w));	2366	upheap (periodics, ev_active (w));
2265		2367
2266	EV_FREQUENT_CHECK;	2368	EV_FREQUENT_CHECK;
2267		2369
2268	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2370	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2269	}	2371	}
2270		2372
2271	void noinline	2373	void noinline
2272	ev_periodic_stop (EV_P_ ev_periodic *w)	2374	ev_periodic_stop (EV_P_ ev_periodic *w)
2273	{	2375	{
…		…
2278	EV_FREQUENT_CHECK;	2380	EV_FREQUENT_CHECK;
2279		2381
2280	{	2382	{
2281	int active = ev_active (w);	2383	int active = ev_active (w);
2282		2384
2283	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2385	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2284		2386
2285	--periodiccnt;	2387	--periodiccnt;
2286		2388
2287	if (expect_true (active < periodiccnt + HEAP0))	2389	if (expect_true (active < periodiccnt + HEAP0))
2288	{	2390	{
…		…
2311		2413
2312	void noinline	2414	void noinline
2313	ev_signal_start (EV_P_ ev_signal *w)	2415	ev_signal_start (EV_P_ ev_signal *w)
2314	{	2416	{
2315	#if EV_MULTIPLICITY	2417	#if EV_MULTIPLICITY
2316	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2418	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2317	#endif	2419	#endif
2318	if (expect_false (ev_is_active (w)))	2420	if (expect_false (ev_is_active (w)))
2319	return;	2421	return;
2320		2422
2321	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2423	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2322		2424
2323	evpipe_init (EV_A);	2425	evpipe_init (EV_A);
2324		2426
2325	EV_FREQUENT_CHECK;	2427	EV_FREQUENT_CHECK;
2326		2428
…		…
2329	sigset_t full, prev;	2431	sigset_t full, prev;
2330	sigfillset (&full);	2432	sigfillset (&full);
2331	sigprocmask (SIG_SETMASK, &full, &prev);	2433	sigprocmask (SIG_SETMASK, &full, &prev);
2332	#endif	2434	#endif
2333		2435
2334	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2436	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2335		2437
2336	#ifndef _WIN32	2438	#ifndef _WIN32
2337	sigprocmask (SIG_SETMASK, &prev, 0);	2439	sigprocmask (SIG_SETMASK, &prev, 0);
2338	#endif	2440	#endif
2339	}	2441	}
…		…
2377		2479
2378	void	2480	void
2379	ev_child_start (EV_P_ ev_child *w)	2481	ev_child_start (EV_P_ ev_child *w)
2380	{	2482	{
2381	#if EV_MULTIPLICITY	2483	#if EV_MULTIPLICITY
2382	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2484	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2383	#endif	2485	#endif
2384	if (expect_false (ev_is_active (w)))	2486	if (expect_false (ev_is_active (w)))
2385	return;	2487	return;
2386		2488
2387	EV_FREQUENT_CHECK;	2489	EV_FREQUENT_CHECK;
…		…
2412	# ifdef _WIN32	2514	# ifdef _WIN32
2413	# undef lstat	2515	# undef lstat
2414	# define lstat(a,b) _stati64 (a,b)	2516	# define lstat(a,b) _stati64 (a,b)
2415	# endif	2517	# endif
2416		2518
2417	#define DEF_STAT_INTERVAL 5.0074891	2519	#define DEF_STAT_INTERVAL 5.0074891
		2520	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2418	#define MIN_STAT_INTERVAL 0.1074891	2521	#define MIN_STAT_INTERVAL 0.1074891
2419		2522
2420	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2523	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2421		2524
2422	#if EV_USE_INOTIFY	2525	#if EV_USE_INOTIFY
2423	# define EV_INOTIFY_BUFSIZE 8192	2526	# define EV_INOTIFY_BUFSIZE 8192
…		…
2427	{	2530	{
2428	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);	2531	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2429		2532
2430	if (w->wd < 0)	2533	if (w->wd < 0)
2431	{	2534	{
		2535	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2432	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2536	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2433		2537
2434	/* monitor some parent directory for speedup hints */	2538	/* monitor some parent directory for speedup hints */
2435	/* note that exceeding the hardcoded limit is not a correctness issue, */	2539	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2436	/* but an efficiency issue only */	2540	/* but an efficiency issue only */
2437	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2541	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2438	{	2542	{
2439	char path [4096];	2543	char path [4096];
2440	strcpy (path, w->path);	2544	strcpy (path, w->path);
…		…
2444	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2548	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2445	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2549	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2446		2550
2447	char *pend = strrchr (path, '/');	2551	char *pend = strrchr (path, '/');
2448		2552
2449	if (!pend)	2553	if (!pend || pend == path)
2450	break; /* whoops, no '/', complain to your admin */	2554	break;
2451		2555
2452	*pend = 0;	2556	*pend = 0;
2453	w->wd = inotify_add_watch (fs_fd, path, mask);	2557	w->wd = inotify_add_watch (fs_fd, path, mask);
2454	}	2558	}
2455	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2559	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2456	}	2560	}
2457	}	2561	}
2458	else
2459	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2460		2562
2461	if (w->wd >= 0)	2563	if (w->wd >= 0)
		2564	{
2462	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2565	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2566
		2567	/* now local changes will be tracked by inotify, but remote changes won't */
		2568	/* unless the filesystem it known to be local, we therefore still poll */
		2569	/* also do poll on <2.6.25, but with normal frequency */
		2570	struct statfs sfs;
		2571
		2572	if (fs_2625 && !statfs (w->path, &sfs))
		2573	if (sfs.f_type == 0x1373 /* devfs */
		2574	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2575	|| sfs.f_type == 0x3153464a /* jfs */
		2576	|| sfs.f_type == 0x52654973 /* reiser3 */
		2577	|| sfs.f_type == 0x01021994 /* tempfs */
		2578	|| sfs.f_type == 0x58465342 /* xfs */)
		2579	return;
		2580
		2581	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2582	ev_timer_again (EV_A_ &w->timer);
		2583	}
2463	}	2584	}
2464		2585
2465	static void noinline	2586	static void noinline
2466	infy_del (EV_P_ ev_stat *w)	2587	infy_del (EV_P_ ev_stat *w)
2467	{	2588	{
…		…
2481		2602
2482	static void noinline	2603	static void noinline
2483	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2604	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2484	{	2605	{
2485	if (slot < 0)	2606	if (slot < 0)
2486	/* overflow, need to check for all hahs slots */	2607	/* overflow, need to check for all hash slots */
2487	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2608	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2488	infy_wd (EV_A_ slot, wd, ev);	2609	infy_wd (EV_A_ slot, wd, ev);
2489	else	2610	else
2490	{	2611	{
2491	WL w_;	2612	WL w_;
…		…
2497		2618
2498	if (w->wd == wd || wd == -1)	2619	if (w->wd == wd || wd == -1)
2499	{	2620	{
2500	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2621	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2501	{	2622	{
		2623	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2502	w->wd = -1;	2624	w->wd = -1;
2503	infy_add (EV_A_ w); /* re-add, no matter what */	2625	infy_add (EV_A_ w); /* re-add, no matter what */
2504	}	2626	}
2505		2627
2506	stat_timer_cb (EV_A_ &w->timer, 0);	2628	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2519		2641
2520	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2642	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2521	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2643	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2522	}	2644	}
2523		2645
2524	void inline_size	2646	inline_size void
		2647	check_2625 (EV_P)
		2648	{
		2649	/* kernels < 2.6.25 are borked
		2650	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2651	*/
		2652	struct utsname buf;
		2653	int major, minor, micro;
		2654
		2655	if (uname (&buf))
		2656	return;
		2657
		2658	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2659	return;
		2660
		2661	if (major < 2
		2662	|| (major == 2 && minor < 6)
		2663	|| (major == 2 && minor == 6 && micro < 25))
		2664	return;
		2665
		2666	fs_2625 = 1;
		2667	}
		2668
		2669	inline_size void
2525	infy_init (EV_P)	2670	infy_init (EV_P)
2526	{	2671	{
2527	if (fs_fd != -2)	2672	if (fs_fd != -2)
2528	return;	2673	return;
		2674
		2675	fs_fd = -1;
		2676
		2677	check_2625 (EV_A);
2529		2678
2530	fs_fd = inotify_init ();	2679	fs_fd = inotify_init ();
2531		2680
2532	if (fs_fd >= 0)	2681	if (fs_fd >= 0)
2533	{	2682	{
…		…
2535	ev_set_priority (&fs_w, EV_MAXPRI);	2684	ev_set_priority (&fs_w, EV_MAXPRI);
2536	ev_io_start (EV_A_ &fs_w);	2685	ev_io_start (EV_A_ &fs_w);
2537	}	2686	}
2538	}	2687	}
2539		2688
2540	void inline_size	2689	inline_size void
2541	infy_fork (EV_P)	2690	infy_fork (EV_P)
2542	{	2691	{
2543	int slot;	2692	int slot;
2544		2693
2545	if (fs_fd < 0)	2694	if (fs_fd < 0)
…		…
2561	w->wd = -1;	2710	w->wd = -1;
2562		2711
2563	if (fs_fd >= 0)	2712	if (fs_fd >= 0)
2564	infy_add (EV_A_ w); /* re-add, no matter what */	2713	infy_add (EV_A_ w); /* re-add, no matter what */
2565	else	2714	else
2566	ev_timer_start (EV_A_ &w->timer);	2715	ev_timer_again (EV_A_ &w->timer);
2567	}	2716	}
2568
2569	}	2717	}
2570	}	2718	}
2571		2719
		2720	#endif
		2721
		2722	#ifdef _WIN32
		2723	# define EV_LSTAT(p,b) _stati64 (p, b)
		2724	#else
		2725	# define EV_LSTAT(p,b) lstat (p, b)
2572	#endif	2726	#endif
2573		2727
2574	void	2728	void
2575	ev_stat_stat (EV_P_ ev_stat *w)	2729	ev_stat_stat (EV_P_ ev_stat *w)
2576	{	2730	{
…		…
2603	|| w->prev.st_atime != w->attr.st_atime	2757	|| w->prev.st_atime != w->attr.st_atime
2604	|| w->prev.st_mtime != w->attr.st_mtime	2758	|| w->prev.st_mtime != w->attr.st_mtime
2605	|| w->prev.st_ctime != w->attr.st_ctime	2759	|| w->prev.st_ctime != w->attr.st_ctime
2606	) {	2760	) {
2607	#if EV_USE_INOTIFY	2761	#if EV_USE_INOTIFY
		2762	if (fs_fd >= 0)
		2763	{
2608	infy_del (EV_A_ w);	2764	infy_del (EV_A_ w);
2609	infy_add (EV_A_ w);	2765	infy_add (EV_A_ w);
2610	ev_stat_stat (EV_A_ w); /* avoid race... */	2766	ev_stat_stat (EV_A_ w); /* avoid race... */
		2767	}
2611	#endif	2768	#endif
2612		2769
2613	ev_feed_event (EV_A_ w, EV_STAT);	2770	ev_feed_event (EV_A_ w, EV_STAT);
2614	}	2771	}
2615	}	2772	}
…		…
2618	ev_stat_start (EV_P_ ev_stat *w)	2775	ev_stat_start (EV_P_ ev_stat *w)
2619	{	2776	{
2620	if (expect_false (ev_is_active (w)))	2777	if (expect_false (ev_is_active (w)))
2621	return;	2778	return;
2622		2779
2623	/* since we use memcmp, we need to clear any padding data etc. */
2624	memset (&w->prev, 0, sizeof (ev_statdata));
2625	memset (&w->attr, 0, sizeof (ev_statdata));
2626
2627	ev_stat_stat (EV_A_ w);	2780	ev_stat_stat (EV_A_ w);
2628		2781
		2782	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2629	if (w->interval < MIN_STAT_INTERVAL)	2783	w->interval = MIN_STAT_INTERVAL;
2630	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2631		2784
2632	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2785	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2633	ev_set_priority (&w->timer, ev_priority (w));	2786	ev_set_priority (&w->timer, ev_priority (w));
2634		2787
2635	#if EV_USE_INOTIFY	2788	#if EV_USE_INOTIFY
2636	infy_init (EV_A);	2789	infy_init (EV_A);
2637		2790
2638	if (fs_fd >= 0)	2791	if (fs_fd >= 0)
2639	infy_add (EV_A_ w);	2792	infy_add (EV_A_ w);
2640	else	2793	else
2641	#endif	2794	#endif
2642	ev_timer_start (EV_A_ &w->timer);	2795	ev_timer_again (EV_A_ &w->timer);
2643		2796
2644	ev_start (EV_A_ (W)w, 1);	2797	ev_start (EV_A_ (W)w, 1);
2645		2798
2646	EV_FREQUENT_CHECK;	2799	EV_FREQUENT_CHECK;
2647	}	2800	}
…		…
2817	ev_loop (EV_A_ EVLOOP_NONBLOCK);	2970	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2818	}	2971	}
2819	}	2972	}
2820	}	2973	}
2821		2974
		2975	static void
		2976	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		2977	{
		2978	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		2979
		2980	ev_embed_stop (EV_A_ w);
		2981
		2982	{
		2983	struct ev_loop *loop = w->other;
		2984
		2985	ev_loop_fork (EV_A);
		2986	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2987	}
		2988
		2989	ev_embed_start (EV_A_ w);
		2990	}
		2991
2822	#if 0	2992	#if 0
2823	static void	2993	static void
2824	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	2994	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2825	{	2995	{
2826	ev_idle_stop (EV_A_ idle);	2996	ev_idle_stop (EV_A_ idle);
…		…
2833	if (expect_false (ev_is_active (w)))	3003	if (expect_false (ev_is_active (w)))
2834	return;	3004	return;
2835		3005
2836	{	3006	{
2837	struct ev_loop *loop = w->other;	3007	struct ev_loop *loop = w->other;
2838	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3008	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2839	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3009	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2840	}	3010	}
2841		3011
2842	EV_FREQUENT_CHECK;	3012	EV_FREQUENT_CHECK;
2843		3013
…		…
2846		3016
2847	ev_prepare_init (&w->prepare, embed_prepare_cb);	3017	ev_prepare_init (&w->prepare, embed_prepare_cb);
2848	ev_set_priority (&w->prepare, EV_MINPRI);	3018	ev_set_priority (&w->prepare, EV_MINPRI);
2849	ev_prepare_start (EV_A_ &w->prepare);	3019	ev_prepare_start (EV_A_ &w->prepare);
2850		3020
		3021	ev_fork_init (&w->fork, embed_fork_cb);
		3022	ev_fork_start (EV_A_ &w->fork);
		3023
2851	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3024	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2852		3025
2853	ev_start (EV_A_ (W)w, 1);	3026	ev_start (EV_A_ (W)w, 1);
2854		3027
2855	EV_FREQUENT_CHECK;	3028	EV_FREQUENT_CHECK;
…		…
2862	if (expect_false (!ev_is_active (w)))	3035	if (expect_false (!ev_is_active (w)))
2863	return;	3036	return;
2864		3037
2865	EV_FREQUENT_CHECK;	3038	EV_FREQUENT_CHECK;
2866		3039
2867	ev_io_stop (EV_A_ &w->io);	3040	ev_io_stop (EV_A_ &w->io);
2868	ev_prepare_stop (EV_A_ &w->prepare);	3041	ev_prepare_stop (EV_A_ &w->prepare);
2869		3042	ev_fork_stop (EV_A_ &w->fork);
2870	ev_stop (EV_A_ (W)w);
2871		3043
2872	EV_FREQUENT_CHECK;	3044	EV_FREQUENT_CHECK;
2873	}	3045	}
2874	#endif	3046	#endif
2875		3047
…		…
2972	once_cb (EV_P_ struct ev_once *once, int revents)	3144	once_cb (EV_P_ struct ev_once *once, int revents)
2973	{	3145	{
2974	void (*cb)(int revents, void *arg) = once->cb;	3146	void (*cb)(int revents, void *arg) = once->cb;
2975	void *arg = once->arg;	3147	void *arg = once->arg;
2976		3148
2977	ev_io_stop (EV_A_ &once->io);	3149	ev_io_stop (EV_A_ &once->io);
2978	ev_timer_stop (EV_A_ &once->to);	3150	ev_timer_stop (EV_A_ &once->to);
2979	ev_free (once);	3151	ev_free (once);
2980		3152
2981	cb (revents, arg);	3153	cb (revents, arg);
2982	}	3154	}
2983		3155
2984	static void	3156	static void
2985	once_cb_io (EV_P_ ev_io *w, int revents)	3157	once_cb_io (EV_P_ ev_io *w, int revents)
2986	{	3158	{
2987	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3159	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3160
		3161	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2988	}	3162	}
2989		3163
2990	static void	3164	static void
2991	once_cb_to (EV_P_ ev_timer *w, int revents)	3165	once_cb_to (EV_P_ ev_timer *w, int revents)
2992	{	3166	{
2993	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3167	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3168
		3169	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2994	}	3170	}
2995		3171
2996	void	3172	void
2997	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3173	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2998	{	3174	{
…		…
3020	ev_timer_set (&once->to, timeout, 0.);	3196	ev_timer_set (&once->to, timeout, 0.);
3021	ev_timer_start (EV_A_ &once->to);	3197	ev_timer_start (EV_A_ &once->to);
3022	}	3198	}
3023	}	3199	}
3024		3200
		3201	/*****************************************************************************/
		3202
		3203	#if 0
		3204	void
		3205	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3206	{
		3207	int i, j;
		3208	ev_watcher_list *wl, *wn;
		3209
		3210	if (types & (EV_IO | EV_EMBED))
		3211	for (i = 0; i < anfdmax; ++i)
		3212	for (wl = anfds [i].head; wl; )
		3213	{
		3214	wn = wl->next;
		3215
		3216	#if EV_EMBED_ENABLE
		3217	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3218	{
		3219	if (types & EV_EMBED)
		3220	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3221	}
		3222	else
		3223	#endif
		3224	#if EV_USE_INOTIFY
		3225	if (ev_cb ((ev_io *)wl) == infy_cb)
		3226	;
		3227	else
		3228	#endif
		3229	if ((ev_io *)wl != &pipeev)
		3230	if (types & EV_IO)
		3231	cb (EV_A_ EV_IO, wl);
		3232
		3233	wl = wn;
		3234	}
		3235
		3236	if (types & (EV_TIMER | EV_STAT))
		3237	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3238	#if EV_STAT_ENABLE
		3239	/*TODO: timer is not always active*/
		3240	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3241	{
		3242	if (types & EV_STAT)
		3243	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3244	}
		3245	else
		3246	#endif
		3247	if (types & EV_TIMER)
		3248	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3249
		3250	#if EV_PERIODIC_ENABLE
		3251	if (types & EV_PERIODIC)
		3252	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3253	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3254	#endif
		3255
		3256	#if EV_IDLE_ENABLE
		3257	if (types & EV_IDLE)
		3258	for (j = NUMPRI; i--; )
		3259	for (i = idlecnt [j]; i--; )
		3260	cb (EV_A_ EV_IDLE, idles [j][i]);
		3261	#endif
		3262
		3263	#if EV_FORK_ENABLE
		3264	if (types & EV_FORK)
		3265	for (i = forkcnt; i--; )
		3266	if (ev_cb (forks [i]) != embed_fork_cb)
		3267	cb (EV_A_ EV_FORK, forks [i]);
		3268	#endif
		3269
		3270	#if EV_ASYNC_ENABLE
		3271	if (types & EV_ASYNC)
		3272	for (i = asynccnt; i--; )
		3273	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3274	#endif
		3275
		3276	if (types & EV_PREPARE)
		3277	for (i = preparecnt; i--; )
		3278	#if EV_EMBED_ENABLE
		3279	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3280	#endif
		3281	cb (EV_A_ EV_PREPARE, prepares [i]);
		3282
		3283	if (types & EV_CHECK)
		3284	for (i = checkcnt; i--; )
		3285	cb (EV_A_ EV_CHECK, checks [i]);
		3286
		3287	if (types & EV_SIGNAL)
		3288	for (i = 0; i < signalmax; ++i)
		3289	for (wl = signals [i].head; wl; )
		3290	{
		3291	wn = wl->next;
		3292	cb (EV_A_ EV_SIGNAL, wl);
		3293	wl = wn;
		3294	}
		3295
		3296	if (types & EV_CHILD)
		3297	for (i = EV_PID_HASHSIZE; i--; )
		3298	for (wl = childs [i]; wl; )
		3299	{
		3300	wn = wl->next;
		3301	cb (EV_A_ EV_CHILD, wl);
		3302	wl = wn;
		3303	}
		3304	/* EV_STAT 0x00001000 /* stat data changed */
		3305	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3306	}
		3307	#endif
		3308
3025	#if EV_MULTIPLICITY	3309	#if EV_MULTIPLICITY
3026	#include "ev_wrap.h"	3310	#include "ev_wrap.h"
3027	#endif	3311	#endif
3028		3312
3029	#ifdef __cplusplus	3313	#ifdef __cplusplus

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