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Comparing libev/ev.c (file contents):
Revision 1.250 by root, Thu May 22 02:44:57 2008 UTC vs.
Revision 1.286 by root, Wed Apr 15 19:37:15 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 */
167		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
168	#ifndef EV_USE_MONOTONIC	189	#ifndef EV_USE_MONOTONIC
		190	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
		191	# define EV_USE_MONOTONIC 1
		192	# else
169	# define EV_USE_MONOTONIC 0	193	# define EV_USE_MONOTONIC 0
		194	# endif
170	#endif	195	#endif
171		196
172	#ifndef EV_USE_REALTIME	197	#ifndef EV_USE_REALTIME
173	# define EV_USE_REALTIME 0	198	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174	#endif	199	#endif
175		200
176	#ifndef EV_USE_NANOSLEEP	201	#ifndef EV_USE_NANOSLEEP
		202	# if _POSIX_C_SOURCE >= 199309L
		203	# define EV_USE_NANOSLEEP 1
		204	# else
177	# define EV_USE_NANOSLEEP 0	205	# define EV_USE_NANOSLEEP 0
		206	# endif
178	#endif	207	#endif
179		208
180	#ifndef EV_USE_SELECT	209	#ifndef EV_USE_SELECT
181	# define EV_USE_SELECT 1	210	# define EV_USE_SELECT 1
182	#endif	211	#endif
…		…
277	# include <sys/select.h>	306	# include <sys/select.h>
278	# endif	307	# endif
279	#endif	308	#endif
280		309
281	#if EV_USE_INOTIFY	310	#if EV_USE_INOTIFY
		311	# include <sys/utsname.h>
		312	# include <sys/statfs.h>
282	# 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
283	#endif	319	#endif
284		320
285	#if EV_SELECT_IS_WINSOCKET	321	#if EV_SELECT_IS_WINSOCKET
286	# 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
287	#endif	332	#endif
288		333
289	#if EV_USE_EVENTFD	334	#if EV_USE_EVENTFD
290	/* 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 */
291	# include <stdint.h>	336	# include <stdint.h>
…		…
352	typedef ev_watcher_time *WT;	397	typedef ev_watcher_time *WT;
353		398
354	#define ev_active(w) ((W)(w))->active	399	#define ev_active(w) ((W)(w))->active
355	#define ev_at(w) ((WT)(w))->at	400	#define ev_at(w) ((WT)(w))->at
356		401
357	#if EV_USE_MONOTONIC	402	#if EV_USE_REALTIME
358	/* 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 */
359	/* 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
360	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? */
361	#endif	410	#endif
362		411
363	#ifdef _WIN32	412	#ifdef _WIN32
364	# include "ev_win32.c"	413	# include "ev_win32.c"
…		…
373	{	422	{
374	syserr_cb = cb;	423	syserr_cb = cb;
375	}	424	}
376		425
377	static void noinline	426	static void noinline
378	syserr (const char *msg)	427	ev_syserr (const char *msg)
379	{	428	{
380	if (!msg)	429	if (!msg)
381	msg = "(libev) system error";	430	msg = "(libev) system error";
382		431
383	if (syserr_cb)	432	if (syserr_cb)
…		…
434	typedef struct	483	typedef struct
435	{	484	{
436	WL head;	485	WL head;
437	unsigned char events;	486	unsigned char events;
438	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
439	#if EV_SELECT_IS_WINSOCKET	493	#if EV_SELECT_IS_WINSOCKET
440	SOCKET handle;	494	SOCKET handle;
441	#endif	495	#endif
442	} ANFD;	496	} ANFD;
443		497
…		…
503		557
504	ev_tstamp	558	ev_tstamp
505	ev_time (void)	559	ev_time (void)
506	{	560	{
507	#if EV_USE_REALTIME	561	#if EV_USE_REALTIME
		562	if (expect_true (have_realtime))
		563	{
508	struct timespec ts;	564	struct timespec ts;
509	clock_gettime (CLOCK_REALTIME, &ts);	565	clock_gettime (CLOCK_REALTIME, &ts);
510	return ts.tv_sec + ts.tv_nsec * 1e-9;	566	return ts.tv_sec + ts.tv_nsec * 1e-9;
511	#else	567	}
		568	#endif
		569
512	struct timeval tv;	570	struct timeval tv;
513	gettimeofday (&tv, 0);	571	gettimeofday (&tv, 0);
514	return tv.tv_sec + tv.tv_usec * 1e-6;	572	return tv.tv_sec + tv.tv_usec * 1e-6;
515	#endif
516	}	573	}
517		574
518	ev_tstamp inline_size	575	inline_size ev_tstamp
519	get_clock (void)	576	get_clock (void)
520	{	577	{
521	#if EV_USE_MONOTONIC	578	#if EV_USE_MONOTONIC
522	if (expect_true (have_monotonic))	579	if (expect_true (have_monotonic))
523	{	580	{
…		…
556	struct timeval tv;	613	struct timeval tv;
557		614
558	tv.tv_sec = (time_t)delay;	615	tv.tv_sec = (time_t)delay;
559	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	616	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
560		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 */
561	select (0, 0, 0, 0, &tv);	621	select (0, 0, 0, 0, &tv);
562	#endif	622	#endif
563	}	623	}
564	}	624	}
565		625
566	/*****************************************************************************/	626	/*****************************************************************************/
567		627
568	#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 */
569		629
570	int inline_size	630	inline_size int
571	array_nextsize (int elem, int cur, int cnt)	631	array_nextsize (int elem, int cur, int cnt)
572	{	632	{
573	int ncur = cur + 1;	633	int ncur = cur + 1;
574		634
575	do	635	do
…		…
592	array_realloc (int elem, void *base, int *cur, int cnt)	652	array_realloc (int elem, void *base, int *cur, int cnt)
593	{	653	{
594	*cur = array_nextsize (elem, *cur, cnt);	654	*cur = array_nextsize (elem, *cur, cnt);
595	return ev_realloc (base, elem * *cur);	655	return ev_realloc (base, elem * *cur);
596	}	656	}
		657
		658	#define array_init_zero(base,count) \
		659	memset ((void *)(base), 0, sizeof (*(base)) * (count))
597		660
598	#define array_needsize(type,base,cur,cnt,init) \	661	#define array_needsize(type,base,cur,cnt,init) \
599	if (expect_false ((cnt) > (cur))) \	662	if (expect_false ((cnt) > (cur))) \
600	{ \	663	{ \
601	int ocur_ = (cur); \	664	int ocur_ = (cur); \
…		…
613	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	676	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
614	}	677	}
615	#endif	678	#endif
616		679
617	#define array_free(stem, idx) \	680	#define array_free(stem, idx) \
618	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
619		682
620	/*****************************************************************************/	683	/*****************************************************************************/
621		684
622	void noinline	685	void noinline
623	ev_feed_event (EV_P_ void *w, int revents)	686	ev_feed_event (EV_P_ void *w, int revents)
…		…
634	pendings [pri][w_->pending - 1].w = w_;	697	pendings [pri][w_->pending - 1].w = w_;
635	pendings [pri][w_->pending - 1].events = revents;	698	pendings [pri][w_->pending - 1].events = revents;
636	}	699	}
637	}	700	}
638		701
639	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
640	queue_events (EV_P_ W *events, int eventcnt, int type)	718	queue_events (EV_P_ W *events, int eventcnt, int type)
641	{	719	{
642	int i;	720	int i;
643		721
644	for (i = 0; i < eventcnt; ++i)	722	for (i = 0; i < eventcnt; ++i)
645	ev_feed_event (EV_A_ events [i], type);	723	ev_feed_event (EV_A_ events [i], type);
646	}	724	}
647		725
648	/*****************************************************************************/	726	/*****************************************************************************/
649		727
650	void inline_size	728	inline_speed void
651	anfds_init (ANFD *base, int count)
652	{
653	while (count--)
654	{
655	base->head = 0;
656	base->events = EV_NONE;
657	base->reify = 0;
658
659	++base;
660	}
661	}
662
663	void inline_speed
664	fd_event (EV_P_ int fd, int revents)	729	fd_event (EV_P_ int fd, int revents)
665	{	730	{
666	ANFD *anfd = anfds + fd;	731	ANFD *anfd = anfds + fd;
667	ev_io *w;	732	ev_io *w;
668		733
…		…
680	{	745	{
681	if (fd >= 0 && fd < anfdmax)	746	if (fd >= 0 && fd < anfdmax)
682	fd_event (EV_A_ fd, revents);	747	fd_event (EV_A_ fd, revents);
683	}	748	}
684		749
685	void inline_size	750	inline_size void
686	fd_reify (EV_P)	751	fd_reify (EV_P)
687	{	752	{
688	int i;	753	int i;
689		754
690	for (i = 0; i < fdchangecnt; ++i)	755	for (i = 0; i < fdchangecnt; ++i)
…		…
699	events |= (unsigned char)w->events;	764	events |= (unsigned char)w->events;
700		765
701	#if EV_SELECT_IS_WINSOCKET	766	#if EV_SELECT_IS_WINSOCKET
702	if (events)	767	if (events)
703	{	768	{
704	unsigned long argp;	769	unsigned long arg;
705	#ifdef EV_FD_TO_WIN32_HANDLE	770	#ifdef EV_FD_TO_WIN32_HANDLE
706	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	771	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
707	#else	772	#else
708	anfd->handle = _get_osfhandle (fd);	773	anfd->handle = _get_osfhandle (fd);
709	#endif	774	#endif
710	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));
711	}	776	}
712	#endif	777	#endif
713		778
714	{	779	{
715	unsigned char o_events = anfd->events;	780	unsigned char o_events = anfd->events;
716	unsigned char o_reify = anfd->reify;	781	unsigned char o_reify = anfd->reify;
717		782
718	anfd->reify = 0;	783	anfd->reify = 0;
719	anfd->events = events;	784	anfd->events = events;
720		785
721	if (o_events != events || o_reify & EV_IOFDSET)	786	if (o_events != events || o_reify & EV__IOFDSET)
722	backend_modify (EV_A_ fd, o_events, events);	787	backend_modify (EV_A_ fd, o_events, events);
723	}	788	}
724	}	789	}
725		790
726	fdchangecnt = 0;	791	fdchangecnt = 0;
727	}	792	}
728		793
729	void inline_size	794	inline_size void
730	fd_change (EV_P_ int fd, int flags)	795	fd_change (EV_P_ int fd, int flags)
731	{	796	{
732	unsigned char reify = anfds [fd].reify;	797	unsigned char reify = anfds [fd].reify;
733	anfds [fd].reify |= flags;	798	anfds [fd].reify |= flags;
734		799
…		…
738	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	803	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
739	fdchanges [fdchangecnt - 1] = fd;	804	fdchanges [fdchangecnt - 1] = fd;
740	}	805	}
741	}	806	}
742		807
743	void inline_speed	808	inline_speed void
744	fd_kill (EV_P_ int fd)	809	fd_kill (EV_P_ int fd)
745	{	810	{
746	ev_io *w;	811	ev_io *w;
747		812
748	while ((w = (ev_io *)anfds [fd].head))	813	while ((w = (ev_io *)anfds [fd].head))
…		…
750	ev_io_stop (EV_A_ w);	815	ev_io_stop (EV_A_ w);
751	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);
752	}	817	}
753	}	818	}
754		819
755	int inline_size	820	inline_size int
756	fd_valid (int fd)	821	fd_valid (int fd)
757	{	822	{
758	#ifdef _WIN32	823	#ifdef _WIN32
759	return _get_osfhandle (fd) != -1;	824	return _get_osfhandle (fd) != -1;
760	#else	825	#else
…		…
768	{	833	{
769	int fd;	834	int fd;
770		835
771	for (fd = 0; fd < anfdmax; ++fd)	836	for (fd = 0; fd < anfdmax; ++fd)
772	if (anfds [fd].events)	837	if (anfds [fd].events)
773	if (!fd_valid (fd) == -1 && errno == EBADF)	838	if (!fd_valid (fd) && errno == EBADF)
774	fd_kill (EV_A_ fd);	839	fd_kill (EV_A_ fd);
775	}	840	}
776		841
777	/* 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 */
778	static void noinline	843	static void noinline
…		…
796		861
797	for (fd = 0; fd < anfdmax; ++fd)	862	for (fd = 0; fd < anfdmax; ++fd)
798	if (anfds [fd].events)	863	if (anfds [fd].events)
799	{	864	{
800	anfds [fd].events = 0;	865	anfds [fd].events = 0;
		866	anfds [fd].emask = 0;
801	fd_change (EV_A_ fd, EV_IOFDSET | 1);	867	fd_change (EV_A_ fd, EV__IOFDSET | 1);
802	}	868	}
803	}	869	}
804		870
805	/*****************************************************************************/	871	/*****************************************************************************/
806		872
…		…
822	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	888	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
823	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)	889	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
824	#define UPHEAP_DONE(p,k) ((p) == (k))	890	#define UPHEAP_DONE(p,k) ((p) == (k))
825		891
826	/* away from the root */	892	/* away from the root */
827	void inline_speed	893	inline_speed void
828	downheap (ANHE *heap, int N, int k)	894	downheap (ANHE *heap, int N, int k)
829	{	895	{
830	ANHE he = heap [k];	896	ANHE he = heap [k];
831	ANHE *E = heap + N + HEAP0;	897	ANHE *E = heap + N + HEAP0;
832		898
…		…
872	#define HEAP0 1	938	#define HEAP0 1
873	#define HPARENT(k) ((k) >> 1)	939	#define HPARENT(k) ((k) >> 1)
874	#define UPHEAP_DONE(p,k) (!(p))	940	#define UPHEAP_DONE(p,k) (!(p))
875		941
876	/* away from the root */	942	/* away from the root */
877	void inline_speed	943	inline_speed void
878	downheap (ANHE *heap, int N, int k)	944	downheap (ANHE *heap, int N, int k)
879	{	945	{
880	ANHE he = heap [k];	946	ANHE he = heap [k];
881		947
882	for (;;)	948	for (;;)
…		…
902	ev_active (ANHE_w (he)) = k;	968	ev_active (ANHE_w (he)) = k;
903	}	969	}
904	#endif	970	#endif
905		971
906	/* towards the root */	972	/* towards the root */
907	void inline_speed	973	inline_speed void
908	upheap (ANHE *heap, int k)	974	upheap (ANHE *heap, int k)
909	{	975	{
910	ANHE he = heap [k];	976	ANHE he = heap [k];
911		977
912	for (;;)	978	for (;;)
…		…
923		989
924	heap [k] = he;	990	heap [k] = he;
925	ev_active (ANHE_w (he)) = k;	991	ev_active (ANHE_w (he)) = k;
926	}	992	}
927		993
928	void inline_size	994	inline_size void
929	adjustheap (ANHE *heap, int N, int k)	995	adjustheap (ANHE *heap, int N, int k)
930	{	996	{
931	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]))
932	upheap (heap, k);	998	upheap (heap, k);
933	else	999	else
934	downheap (heap, N, k);	1000	downheap (heap, N, k);
935	}	1001	}
936		1002
937	/* 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 */
938	void inline_size	1004	inline_size void
939	reheap (ANHE *heap, int N)	1005	reheap (ANHE *heap, int N)
940	{	1006	{
941	int i;	1007	int i;
		1008
942	/* 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 */
943	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */	1010	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
944	for (i = 0; i < N; ++i)	1011	for (i = 0; i < N; ++i)
945	upheap (heap, i + HEAP0);	1012	upheap (heap, i + HEAP0);
946	}	1013	}
947		1014
948	#if EV_VERIFY
949	static void
950	checkheap (ANHE *heap, int N)
951	{
952	int i;
953
954	for (i = HEAP0; i < N + HEAP0; ++i)
955	{
956	assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
957	assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
958	assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
959	}
960	}
961	#endif
962
963	/*****************************************************************************/	1015	/*****************************************************************************/
964		1016
965	typedef struct	1017	typedef struct
966	{	1018	{
967	WL head;	1019	WL head;
…		…
971	static ANSIG *signals;	1023	static ANSIG *signals;
972	static int signalmax;	1024	static int signalmax;
973		1025
974	static EV_ATOMIC_T gotsig;	1026	static EV_ATOMIC_T gotsig;
975		1027
976	void inline_size
977	signals_init (ANSIG *base, int count)
978	{
979	while (count--)
980	{
981	base->head = 0;
982	base->gotsig = 0;
983
984	++base;
985	}
986	}
987
988	/*****************************************************************************/	1028	/*****************************************************************************/
989		1029
990	void inline_speed	1030	inline_speed void
991	fd_intern (int fd)	1031	fd_intern (int fd)
992	{	1032	{
993	#ifdef _WIN32	1033	#ifdef _WIN32
994	int arg = 1;	1034	unsigned long arg = 1;
995	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1035	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
996	#else	1036	#else
997	fcntl (fd, F_SETFD, FD_CLOEXEC);	1037	fcntl (fd, F_SETFD, FD_CLOEXEC);
998	fcntl (fd, F_SETFL, O_NONBLOCK);	1038	fcntl (fd, F_SETFL, O_NONBLOCK);
999	#endif	1039	#endif
…		…
1013	}	1053	}
1014	else	1054	else
1015	#endif	1055	#endif
1016	{	1056	{
1017	while (pipe (evpipe))	1057	while (pipe (evpipe))
1018	syserr ("(libev) error creating signal/async pipe");	1058	ev_syserr ("(libev) error creating signal/async pipe");
1019		1059
1020	fd_intern (evpipe [0]);	1060	fd_intern (evpipe [0]);
1021	fd_intern (evpipe [1]);	1061	fd_intern (evpipe [1]);
1022	ev_io_set (&pipeev, evpipe [0], EV_READ);	1062	ev_io_set (&pipeev, evpipe [0], EV_READ);
1023	}	1063	}
…		…
1025	ev_io_start (EV_A_ &pipeev);	1065	ev_io_start (EV_A_ &pipeev);
1026	ev_unref (EV_A); /* watcher should not keep loop alive */	1066	ev_unref (EV_A); /* watcher should not keep loop alive */
1027	}	1067	}
1028	}	1068	}
1029		1069
1030	void inline_size	1070	inline_size void
1031	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1071	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1032	{	1072	{
1033	if (!*flag)	1073	if (!*flag)
1034	{	1074	{
1035	int old_errno = errno; /* save errno because write might clobber it */	1075	int old_errno = errno; /* save errno because write might clobber it */
…		…
1113	ev_feed_signal_event (EV_P_ int signum)	1153	ev_feed_signal_event (EV_P_ int signum)
1114	{	1154	{
1115	WL w;	1155	WL w;
1116		1156
1117	#if EV_MULTIPLICITY	1157	#if EV_MULTIPLICITY
1118	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));
1119	#endif	1159	#endif
1120		1160
1121	--signum;	1161	--signum;
1122		1162
1123	if (signum < 0 || signum >= signalmax)	1163	if (signum < 0 || signum >= signalmax)
…		…
1139		1179
1140	#ifndef WIFCONTINUED	1180	#ifndef WIFCONTINUED
1141	# define WIFCONTINUED(status) 0	1181	# define WIFCONTINUED(status) 0
1142	#endif	1182	#endif
1143		1183
1144	void inline_speed	1184	inline_speed void
1145	child_reap (EV_P_ int chain, int pid, int status)	1185	child_reap (EV_P_ int chain, int pid, int status)
1146	{	1186	{
1147	ev_child *w;	1187	ev_child *w;
1148	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1188	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1149		1189
…		…
1252	/* kqueue is borked on everything but netbsd apparently */	1292	/* kqueue is borked on everything but netbsd apparently */
1253	/* 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 */
1254	flags &= ~EVBACKEND_KQUEUE;	1294	flags &= ~EVBACKEND_KQUEUE;
1255	#endif	1295	#endif
1256	#ifdef __APPLE__	1296	#ifdef __APPLE__
1257	// flags &= ~EVBACKEND_KQUEUE; for documentation	1297	/* only select works correctly on that "unix-certified" platform */
1258	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 */
1259	#endif	1300	#endif
1260		1301
1261	return flags;	1302	return flags;
1262	}	1303	}
1263		1304
…		…
1300	static void noinline	1341	static void noinline
1301	loop_init (EV_P_ unsigned int flags)	1342	loop_init (EV_P_ unsigned int flags)
1302	{	1343	{
1303	if (!backend)	1344	if (!backend)
1304	{	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
1305	#if EV_USE_MONOTONIC	1356	#if EV_USE_MONOTONIC
		1357	if (!have_monotonic)
1306	{	1358	{
1307	struct timespec ts;	1359	struct timespec ts;
		1360
1308	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1361	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1309	have_monotonic = 1;	1362	have_monotonic = 1;
1310	}	1363	}
1311	#endif	1364	#endif
1312		1365
1313	ev_rt_now = ev_time ();	1366	ev_rt_now = ev_time ();
1314	mn_now = get_clock ();	1367	mn_now = get_clock ();
1315	now_floor = mn_now;	1368	now_floor = mn_now;
…		…
1414	}	1467	}
1415		1468
1416	ev_free (anfds); anfdmax = 0;	1469	ev_free (anfds); anfdmax = 0;
1417		1470
1418	/* 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);
1419	array_free (fdchange, EMPTY);	1473	array_free (fdchange, EMPTY);
1420	array_free (timer, EMPTY);	1474	array_free (timer, EMPTY);
1421	#if EV_PERIODIC_ENABLE	1475	#if EV_PERIODIC_ENABLE
1422	array_free (periodic, EMPTY);	1476	array_free (periodic, EMPTY);
1423	#endif	1477	#endif
…		…
1432		1486
1433	backend = 0;	1487	backend = 0;
1434	}	1488	}
1435		1489
1436	#if EV_USE_INOTIFY	1490	#if EV_USE_INOTIFY
1437	void inline_size infy_fork (EV_P);	1491	inline_size void infy_fork (EV_P);
1438	#endif	1492	#endif
1439		1493
1440	void inline_size	1494	inline_size void
1441	loop_fork (EV_P)	1495	loop_fork (EV_P)
1442	{	1496	{
1443	#if EV_USE_PORT	1497	#if EV_USE_PORT
1444	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1498	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1445	#endif	1499	#endif
…		…
1513	{	1567	{
1514	postfork = 1; /* must be in line with ev_default_fork */	1568	postfork = 1; /* must be in line with ev_default_fork */
1515	}	1569	}
1516		1570
1517	#if EV_VERIFY	1571	#if EV_VERIFY
1518	static void	1572	static void noinline
		1573	verify_watcher (EV_P_ W w)
		1574	{
		1575	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1576
		1577	if (w->pending)
		1578	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1579	}
		1580
		1581	static void noinline
		1582	verify_heap (EV_P_ ANHE *heap, int N)
		1583	{
		1584	int i;
		1585
		1586	for (i = HEAP0; i < N + HEAP0; ++i)
		1587	{
		1588	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1589	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1590	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1591
		1592	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1593	}
		1594	}
		1595
		1596	static void noinline
1519	array_check (W **ws, int cnt)	1597	array_verify (EV_P_ W *ws, int cnt)
1520	{	1598	{
1521	while (cnt--)	1599	while (cnt--)
		1600	{
1522	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));	1601	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1602	verify_watcher (EV_A_ ws [cnt]);
		1603	}
1523	}	1604	}
1524	#endif	1605	#endif
1525		1606
1526	void	1607	void
1527	ev_loop_verify (EV_P)	1608	ev_loop_verify (EV_P)
1528	{	1609	{
1529	#if EV_VERIFY	1610	#if EV_VERIFY
1530	int i;	1611	int i;
		1612	WL w;
1531		1613
		1614	assert (activecnt >= -1);
		1615
		1616	assert (fdchangemax >= fdchangecnt);
		1617	for (i = 0; i < fdchangecnt; ++i)
		1618	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1619
		1620	assert (anfdmax >= 0);
		1621	for (i = 0; i < anfdmax; ++i)
		1622	for (w = anfds [i].head; w; w = w->next)
		1623	{
		1624	verify_watcher (EV_A_ (W)w);
		1625	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1626	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1627	}
		1628
		1629	assert (timermax >= timercnt);
1532	checkheap (timers, timercnt);	1630	verify_heap (EV_A_ timers, timercnt);
		1631
1533	#if EV_PERIODIC_ENABLE	1632	#if EV_PERIODIC_ENABLE
		1633	assert (periodicmax >= periodiccnt);
1534	checkheap (periodics, periodiccnt);	1634	verify_heap (EV_A_ periodics, periodiccnt);
1535	#endif	1635	#endif
1536		1636
		1637	for (i = NUMPRI; i--; )
		1638	{
		1639	assert (pendingmax [i] >= pendingcnt [i]);
1537	#if EV_IDLE_ENABLE	1640	#if EV_IDLE_ENABLE
1538	for (i = NUMPRI; i--; )	1641	assert (idleall >= 0);
		1642	assert (idlemax [i] >= idlecnt [i]);
1539	array_check ((W **)idles [i], idlecnt [i]);	1643	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1540	#endif	1644	#endif
		1645	}
		1646
1541	#if EV_FORK_ENABLE	1647	#if EV_FORK_ENABLE
		1648	assert (forkmax >= forkcnt);
1542	array_check ((W **)forks, forkcnt);	1649	array_verify (EV_A_ (W *)forks, forkcnt);
1543	#endif	1650	#endif
		1651
1544	#if EV_ASYNC_ENABLE	1652	#if EV_ASYNC_ENABLE
		1653	assert (asyncmax >= asynccnt);
1545	array_check ((W **)asyncs, asynccnt);	1654	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1655	#endif
		1656
		1657	assert (preparemax >= preparecnt);
		1658	array_verify (EV_A_ (W *)prepares, preparecnt);
		1659
		1660	assert (checkmax >= checkcnt);
		1661	array_verify (EV_A_ (W *)checks, checkcnt);
		1662
		1663	# if 0
		1664	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1665	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1546	#endif	1666	# endif
1547	array_check ((W **)prepares, preparecnt);
1548	array_check ((W **)checks, checkcnt);
1549	#endif	1667	#endif
1550	}	1668	}
1551		1669
1552	#endif /* multiplicity */	1670	#endif /* multiplicity */
1553		1671
…		…
1590	{	1708	{
1591	#if EV_MULTIPLICITY	1709	#if EV_MULTIPLICITY
1592	struct ev_loop *loop = ev_default_loop_ptr;	1710	struct ev_loop *loop = ev_default_loop_ptr;
1593	#endif	1711	#endif
1594		1712
		1713	ev_default_loop_ptr = 0;
		1714
1595	#ifndef _WIN32	1715	#ifndef _WIN32
1596	ev_ref (EV_A); /* child watcher */	1716	ev_ref (EV_A); /* child watcher */
1597	ev_signal_stop (EV_A_ &childev);	1717	ev_signal_stop (EV_A_ &childev);
1598	#endif	1718	#endif
1599		1719
…		…
1605	{	1725	{
1606	#if EV_MULTIPLICITY	1726	#if EV_MULTIPLICITY
1607	struct ev_loop *loop = ev_default_loop_ptr;	1727	struct ev_loop *loop = ev_default_loop_ptr;
1608	#endif	1728	#endif
1609		1729
1610	if (backend)
1611	postfork = 1; /* must be in line with ev_loop_fork */	1730	postfork = 1; /* must be in line with ev_loop_fork */
1612	}	1731	}
1613		1732
1614	/*****************************************************************************/	1733	/*****************************************************************************/
1615		1734
1616	void	1735	void
1617	ev_invoke (EV_P_ void *w, int revents)	1736	ev_invoke (EV_P_ void *w, int revents)
1618	{	1737	{
1619	EV_CB_INVOKE ((W)w, revents);	1738	EV_CB_INVOKE ((W)w, revents);
1620	}	1739	}
1621		1740
1622	void inline_speed	1741	inline_speed void
1623	call_pending (EV_P)	1742	call_pending (EV_P)
1624	{	1743	{
1625	int pri;	1744	int pri;
1626		1745
1627	for (pri = NUMPRI; pri--; )	1746	for (pri = NUMPRI; pri--; )
…		…
1629	{	1748	{
1630	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1749	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1631		1750
1632	if (expect_true (p->w))	1751	if (expect_true (p->w))
1633	{	1752	{
1634	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1753	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1635		1754
1636	p->w->pending = 0;	1755	p->w->pending = 0;
1637	EV_CB_INVOKE (p->w, p->events);	1756	EV_CB_INVOKE (p->w, p->events);
1638	EV_FREQUENT_CHECK;	1757	EV_FREQUENT_CHECK;
1639	}	1758	}
1640	}	1759	}
1641	}	1760	}
1642		1761
1643	#if EV_IDLE_ENABLE	1762	#if EV_IDLE_ENABLE
1644	void inline_size	1763	inline_size void
1645	idle_reify (EV_P)	1764	idle_reify (EV_P)
1646	{	1765	{
1647	if (expect_false (idleall))	1766	if (expect_false (idleall))
1648	{	1767	{
1649	int pri;	1768	int pri;
…		…
1661	}	1780	}
1662	}	1781	}
1663	}	1782	}
1664	#endif	1783	#endif
1665		1784
1666	void inline_size	1785	inline_size void
1667	timers_reify (EV_P)	1786	timers_reify (EV_P)
1668	{	1787	{
1669	EV_FREQUENT_CHECK;	1788	EV_FREQUENT_CHECK;
1670		1789
1671	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	1790	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1672	{	1791	{
1673	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	1792	do
1674
1675	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1676
1677	/* first reschedule or stop timer */
1678	if (w->repeat)
1679	{	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	{
1680	ev_at (w) += w->repeat;	1801	ev_at (w) += w->repeat;
1681	if (ev_at (w) < mn_now)	1802	if (ev_at (w) < mn_now)
1682	ev_at (w) = mn_now;	1803	ev_at (w) = mn_now;
1683		1804
1684	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.));
1685		1806
1686	ANHE_at_cache (timers [HEAP0]);	1807	ANHE_at_cache (timers [HEAP0]);
1687	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);
1688	}	1815	}
1689	else	1816	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1690	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1691		1817
1692	EV_FREQUENT_CHECK;
1693	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1818	feed_reverse_done (EV_A_ EV_TIMEOUT);
1694	}	1819	}
1695	}	1820	}
1696		1821
1697	#if EV_PERIODIC_ENABLE	1822	#if EV_PERIODIC_ENABLE
1698	void inline_size	1823	inline_size void
1699	periodics_reify (EV_P)	1824	periodics_reify (EV_P)
1700	{	1825	{
1701	EV_FREQUENT_CHECK;	1826	EV_FREQUENT_CHECK;
1702		1827
1703	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	1828	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1704	{	1829	{
1705	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	1830	int feed_count = 0;
1706		1831
1707	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	1832	do
1708
1709	/* first reschedule or stop timer */
1710	if (w->reschedule_cb)
1711	{	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	{
1712	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1841	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1713		1842
1714	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));
1715		1844
1716	ANHE_at_cache (periodics [HEAP0]);	1845	ANHE_at_cache (periodics [HEAP0]);
1717	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);
1718	}	1872	}
1719	else if (w->interval)	1873	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1720	{
1721	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1722	/* if next trigger time is not sufficiently in the future, put it there */
1723	/* this might happen because of floating point inexactness */
1724	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1725	{
1726	ev_at (w) += w->interval;
1727		1874
1728	/* if interval is unreasonably low we might still have a time in the past */
1729	/* so correct this. this will make the periodic very inexact, but the user */
1730	/* has effectively asked to get triggered more often than possible */
1731	if (ev_at (w) < ev_rt_now)
1732	ev_at (w) = ev_rt_now;
1733	}
1734
1735	ANHE_at_cache (periodics [HEAP0]);
1736	downheap (periodics, periodiccnt, HEAP0);
1737	}
1738	else
1739	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1740
1741	EV_FREQUENT_CHECK;
1742	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1875	feed_reverse_done (EV_A_ EV_PERIODIC);
1743	}	1876	}
1744	}	1877	}
1745		1878
1746	static void noinline	1879	static void noinline
1747	periodics_reschedule (EV_P)	1880	periodics_reschedule (EV_P)
…		…
1763		1896
1764	reheap (periodics, periodiccnt);	1897	reheap (periodics, periodiccnt);
1765	}	1898	}
1766	#endif	1899	#endif
1767		1900
1768	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
1769	time_update (EV_P_ ev_tstamp max_block)	1915	time_update (EV_P_ ev_tstamp max_block)
1770	{	1916	{
1771	int i;	1917	int i;
1772		1918
1773	#if EV_USE_MONOTONIC	1919	#if EV_USE_MONOTONIC
…		…
1806	ev_rt_now = ev_time ();	1952	ev_rt_now = ev_time ();
1807	mn_now = get_clock ();	1953	mn_now = get_clock ();
1808	now_floor = mn_now;	1954	now_floor = mn_now;
1809	}	1955	}
1810		1956
		1957	/* no timer adjustment, as the monotonic clock doesn't jump */
		1958	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1811	# if EV_PERIODIC_ENABLE	1959	# if EV_PERIODIC_ENABLE
1812	periodics_reschedule (EV_A);	1960	periodics_reschedule (EV_A);
1813	# endif	1961	# endif
1814	/* no timer adjustment, as the monotonic clock doesn't jump */
1815	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1816	}	1962	}
1817	else	1963	else
1818	#endif	1964	#endif
1819	{	1965	{
1820	ev_rt_now = ev_time ();	1966	ev_rt_now = ev_time ();
1821		1967
1822	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))
1823	{	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);
1824	#if EV_PERIODIC_ENABLE	1972	#if EV_PERIODIC_ENABLE
1825	periodics_reschedule (EV_A);	1973	periodics_reschedule (EV_A);
1826	#endif	1974	#endif
1827	/* adjust timers. this is easy, as the offset is the same for all of them */
1828	for (i = 0; i < timercnt; ++i)
1829	{
1830	ANHE *he = timers + i + HEAP0;
1831	ANHE_w (*he)->at += ev_rt_now - mn_now;
1832	ANHE_at_cache (*he);
1833	}
1834	}	1975	}
1835		1976
1836	mn_now = ev_rt_now;	1977	mn_now = ev_rt_now;
1837	}	1978	}
1838	}
1839
1840	void
1841	ev_ref (EV_P)
1842	{
1843	++activecnt;
1844	}
1845
1846	void
1847	ev_unref (EV_P)
1848	{
1849	--activecnt;
1850	}	1979	}
1851		1980
1852	static int loop_done;	1981	static int loop_done;
1853		1982
1854	void	1983	void
…		…
1888	{	2017	{
1889	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2018	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1890	call_pending (EV_A);	2019	call_pending (EV_A);
1891	}	2020	}
1892		2021
1893	if (expect_false (!activecnt))
1894	break;
1895
1896	/* we might have forked, so reify kernel state if necessary */	2022	/* we might have forked, so reify kernel state if necessary */
1897	if (expect_false (postfork))	2023	if (expect_false (postfork))
1898	loop_fork (EV_A);	2024	loop_fork (EV_A);
1899		2025
1900	/* update fd-related kernel structures */	2026	/* update fd-related kernel structures */
…		…
1907		2033
1908	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2034	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1909	{	2035	{
1910	/* update time to cancel out callback processing overhead */	2036	/* update time to cancel out callback processing overhead */
1911	time_update (EV_A_ 1e100);	2037	time_update (EV_A_ 1e100);
1912
1913	waittime = MAX_BLOCKTIME;
1914		2038
1915	if (timercnt)	2039	if (timercnt)
1916	{	2040	{
1917	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;	2041	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1918	if (waittime > to) waittime = to;	2042	if (waittime > to) waittime = to;
…		…
1979	ev_unloop (EV_P_ int how)	2103	ev_unloop (EV_P_ int how)
1980	{	2104	{
1981	loop_done = how;	2105	loop_done = how;
1982	}	2106	}
1983		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	timers_reschedule (EV_A_ mn_now - mn_prev);
		2139	#if EV_PERIODIC_ENABLE
		2140	periodics_reschedule (EV_A);
		2141	#endif
		2142	}
		2143
1984	/*****************************************************************************/	2144	/*****************************************************************************/
1985		2145
1986	void inline_size	2146	inline_size void
1987	wlist_add (WL *head, WL elem)	2147	wlist_add (WL *head, WL elem)
1988	{	2148	{
1989	elem->next = *head;	2149	elem->next = *head;
1990	*head = elem;	2150	*head = elem;
1991	}	2151	}
1992		2152
1993	void inline_size	2153	inline_size void
1994	wlist_del (WL *head, WL elem)	2154	wlist_del (WL *head, WL elem)
1995	{	2155	{
1996	while (*head)	2156	while (*head)
1997	{	2157	{
1998	if (*head == elem)	2158	if (*head == elem)
…		…
2003		2163
2004	head = &(*head)->next;	2164	head = &(*head)->next;
2005	}	2165	}
2006	}	2166	}
2007		2167
2008	void inline_speed	2168	inline_speed void
2009	clear_pending (EV_P_ W w)	2169	clear_pending (EV_P_ W w)
2010	{	2170	{
2011	if (w->pending)	2171	if (w->pending)
2012	{	2172	{
2013	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2173	pendings [ABSPRI (w)][w->pending - 1].w = 0;
…		…
2030	}	2190	}
2031	else	2191	else
2032	return 0;	2192	return 0;
2033	}	2193	}
2034		2194
2035	void inline_size	2195	inline_size void
2036	pri_adjust (EV_P_ W w)	2196	pri_adjust (EV_P_ W w)
2037	{	2197	{
2038	int pri = w->priority;	2198	int pri = w->priority;
2039	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2199	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2040	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2200	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2041	w->priority = pri;	2201	w->priority = pri;
2042	}	2202	}
2043		2203
2044	void inline_speed	2204	inline_speed void
2045	ev_start (EV_P_ W w, int active)	2205	ev_start (EV_P_ W w, int active)
2046	{	2206	{
2047	pri_adjust (EV_A_ w);	2207	pri_adjust (EV_A_ w);
2048	w->active = active;	2208	w->active = active;
2049	ev_ref (EV_A);	2209	ev_ref (EV_A);
2050	}	2210	}
2051		2211
2052	void inline_size	2212	inline_size void
2053	ev_stop (EV_P_ W w)	2213	ev_stop (EV_P_ W w)
2054	{	2214	{
2055	ev_unref (EV_A);	2215	ev_unref (EV_A);
2056	w->active = 0;	2216	w->active = 0;
2057	}	2217	}
…		…
2064	int fd = w->fd;	2224	int fd = w->fd;
2065		2225
2066	if (expect_false (ev_is_active (w)))	2226	if (expect_false (ev_is_active (w)))
2067	return;	2227	return;
2068		2228
2069	assert (("ev_io_start called with negative fd", fd >= 0));	2229	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2230	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2070		2231
2071	EV_FREQUENT_CHECK;	2232	EV_FREQUENT_CHECK;
2072		2233
2073	ev_start (EV_A_ (W)w, 1);	2234	ev_start (EV_A_ (W)w, 1);
2074	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2235	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2075	wlist_add (&anfds[fd].head, (WL)w);	2236	wlist_add (&anfds[fd].head, (WL)w);
2076		2237
2077	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2238	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
2078	w->events &= ~EV_IOFDSET;	2239	w->events &= ~EV__IOFDSET;
2079		2240
2080	EV_FREQUENT_CHECK;	2241	EV_FREQUENT_CHECK;
2081	}	2242	}
2082		2243
2083	void noinline	2244	void noinline
…		…
2085	{	2246	{
2086	clear_pending (EV_A_ (W)w);	2247	clear_pending (EV_A_ (W)w);
2087	if (expect_false (!ev_is_active (w)))	2248	if (expect_false (!ev_is_active (w)))
2088	return;	2249	return;
2089		2250
2090	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2251	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2091		2252
2092	EV_FREQUENT_CHECK;	2253	EV_FREQUENT_CHECK;
2093		2254
2094	wlist_del (&anfds[w->fd].head, (WL)w);	2255	wlist_del (&anfds[w->fd].head, (WL)w);
2095	ev_stop (EV_A_ (W)w);	2256	ev_stop (EV_A_ (W)w);
…		…
2105	if (expect_false (ev_is_active (w)))	2266	if (expect_false (ev_is_active (w)))
2106	return;	2267	return;
2107		2268
2108	ev_at (w) += mn_now;	2269	ev_at (w) += mn_now;
2109		2270
2110	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2271	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2111		2272
2112	EV_FREQUENT_CHECK;	2273	EV_FREQUENT_CHECK;
2113		2274
2114	++timercnt;	2275	++timercnt;
2115	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);	2276	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
…		…
2118	ANHE_at_cache (timers [ev_active (w)]);	2279	ANHE_at_cache (timers [ev_active (w)]);
2119	upheap (timers, ev_active (w));	2280	upheap (timers, ev_active (w));
2120		2281
2121	EV_FREQUENT_CHECK;	2282	EV_FREQUENT_CHECK;
2122		2283
2123	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2284	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2124	}	2285	}
2125		2286
2126	void noinline	2287	void noinline
2127	ev_timer_stop (EV_P_ ev_timer *w)	2288	ev_timer_stop (EV_P_ ev_timer *w)
2128	{	2289	{
…		…
2133	EV_FREQUENT_CHECK;	2294	EV_FREQUENT_CHECK;
2134		2295
2135	{	2296	{
2136	int active = ev_active (w);	2297	int active = ev_active (w);
2137		2298
2138	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2299	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2139		2300
2140	--timercnt;	2301	--timercnt;
2141		2302
2142	if (expect_true (active < timercnt + HEAP0))	2303	if (expect_true (active < timercnt + HEAP0))
2143	{	2304	{
…		…
2187		2348
2188	if (w->reschedule_cb)	2349	if (w->reschedule_cb)
2189	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2350	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2190	else if (w->interval)	2351	else if (w->interval)
2191	{	2352	{
2192	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2353	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2193	/* this formula differs from the one in periodic_reify because we do not always round up */	2354	/* this formula differs from the one in periodic_reify because we do not always round up */
2194	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2355	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2195	}	2356	}
2196	else	2357	else
2197	ev_at (w) = w->offset;	2358	ev_at (w) = w->offset;
…		…
2205	ANHE_at_cache (periodics [ev_active (w)]);	2366	ANHE_at_cache (periodics [ev_active (w)]);
2206	upheap (periodics, ev_active (w));	2367	upheap (periodics, ev_active (w));
2207		2368
2208	EV_FREQUENT_CHECK;	2369	EV_FREQUENT_CHECK;
2209		2370
2210	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2371	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2211	}	2372	}
2212		2373
2213	void noinline	2374	void noinline
2214	ev_periodic_stop (EV_P_ ev_periodic *w)	2375	ev_periodic_stop (EV_P_ ev_periodic *w)
2215	{	2376	{
…		…
2220	EV_FREQUENT_CHECK;	2381	EV_FREQUENT_CHECK;
2221		2382
2222	{	2383	{
2223	int active = ev_active (w);	2384	int active = ev_active (w);
2224		2385
2225	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2386	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2226		2387
2227	--periodiccnt;	2388	--periodiccnt;
2228		2389
2229	if (expect_true (active < periodiccnt + HEAP0))	2390	if (expect_true (active < periodiccnt + HEAP0))
2230	{	2391	{
…		…
2253		2414
2254	void noinline	2415	void noinline
2255	ev_signal_start (EV_P_ ev_signal *w)	2416	ev_signal_start (EV_P_ ev_signal *w)
2256	{	2417	{
2257	#if EV_MULTIPLICITY	2418	#if EV_MULTIPLICITY
2258	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2419	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2259	#endif	2420	#endif
2260	if (expect_false (ev_is_active (w)))	2421	if (expect_false (ev_is_active (w)))
2261	return;	2422	return;
2262		2423
2263	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2424	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2264		2425
2265	evpipe_init (EV_A);	2426	evpipe_init (EV_A);
2266		2427
2267	EV_FREQUENT_CHECK;	2428	EV_FREQUENT_CHECK;
2268		2429
…		…
2271	sigset_t full, prev;	2432	sigset_t full, prev;
2272	sigfillset (&full);	2433	sigfillset (&full);
2273	sigprocmask (SIG_SETMASK, &full, &prev);	2434	sigprocmask (SIG_SETMASK, &full, &prev);
2274	#endif	2435	#endif
2275		2436
2276	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2437	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2277		2438
2278	#ifndef _WIN32	2439	#ifndef _WIN32
2279	sigprocmask (SIG_SETMASK, &prev, 0);	2440	sigprocmask (SIG_SETMASK, &prev, 0);
2280	#endif	2441	#endif
2281	}	2442	}
…		…
2319		2480
2320	void	2481	void
2321	ev_child_start (EV_P_ ev_child *w)	2482	ev_child_start (EV_P_ ev_child *w)
2322	{	2483	{
2323	#if EV_MULTIPLICITY	2484	#if EV_MULTIPLICITY
2324	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2485	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2325	#endif	2486	#endif
2326	if (expect_false (ev_is_active (w)))	2487	if (expect_false (ev_is_active (w)))
2327	return;	2488	return;
2328		2489
2329	EV_FREQUENT_CHECK;	2490	EV_FREQUENT_CHECK;
…		…
2354	# ifdef _WIN32	2515	# ifdef _WIN32
2355	# undef lstat	2516	# undef lstat
2356	# define lstat(a,b) _stati64 (a,b)	2517	# define lstat(a,b) _stati64 (a,b)
2357	# endif	2518	# endif
2358		2519
2359	#define DEF_STAT_INTERVAL 5.0074891	2520	#define DEF_STAT_INTERVAL 5.0074891
		2521	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2360	#define MIN_STAT_INTERVAL 0.1074891	2522	#define MIN_STAT_INTERVAL 0.1074891
2361		2523
2362	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2524	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2363		2525
2364	#if EV_USE_INOTIFY	2526	#if EV_USE_INOTIFY
2365	# define EV_INOTIFY_BUFSIZE 8192	2527	# define EV_INOTIFY_BUFSIZE 8192
…		…
2369	{	2531	{
2370	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);	2532	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);
2371		2533
2372	if (w->wd < 0)	2534	if (w->wd < 0)
2373	{	2535	{
		2536	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2374	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2537	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2375		2538
2376	/* monitor some parent directory for speedup hints */	2539	/* monitor some parent directory for speedup hints */
2377	/* note that exceeding the hardcoded limit is not a correctness issue, */	2540	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2378	/* but an efficiency issue only */	2541	/* but an efficiency issue only */
2379	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2542	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2380	{	2543	{
2381	char path [4096];	2544	char path [4096];
2382	strcpy (path, w->path);	2545	strcpy (path, w->path);
…		…
2386	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2549	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2387	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2550	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2388		2551
2389	char *pend = strrchr (path, '/');	2552	char *pend = strrchr (path, '/');
2390		2553
2391	if (!pend)	2554	if (!pend || pend == path)
2392	break; /* whoops, no '/', complain to your admin */	2555	break;
2393		2556
2394	*pend = 0;	2557	*pend = 0;
2395	w->wd = inotify_add_watch (fs_fd, path, mask);	2558	w->wd = inotify_add_watch (fs_fd, path, mask);
2396	}	2559	}
2397	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2560	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2398	}	2561	}
2399	}	2562	}
2400	else
2401	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2402		2563
2403	if (w->wd >= 0)	2564	if (w->wd >= 0)
		2565	{
2404	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2566	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2567
		2568	/* now local changes will be tracked by inotify, but remote changes won't */
		2569	/* unless the filesystem it known to be local, we therefore still poll */
		2570	/* also do poll on <2.6.25, but with normal frequency */
		2571	struct statfs sfs;
		2572
		2573	if (fs_2625 && !statfs (w->path, &sfs))
		2574	if (sfs.f_type == 0x1373 /* devfs */
		2575	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2576	|| sfs.f_type == 0x3153464a /* jfs */
		2577	|| sfs.f_type == 0x52654973 /* reiser3 */
		2578	|| sfs.f_type == 0x01021994 /* tempfs */
		2579	|| sfs.f_type == 0x58465342 /* xfs */)
		2580	return;
		2581
		2582	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2583	ev_timer_again (EV_A_ &w->timer);
		2584	}
2405	}	2585	}
2406		2586
2407	static void noinline	2587	static void noinline
2408	infy_del (EV_P_ ev_stat *w)	2588	infy_del (EV_P_ ev_stat *w)
2409	{	2589	{
…		…
2423		2603
2424	static void noinline	2604	static void noinline
2425	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2605	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2426	{	2606	{
2427	if (slot < 0)	2607	if (slot < 0)
2428	/* overflow, need to check for all hahs slots */	2608	/* overflow, need to check for all hash slots */
2429	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2609	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2430	infy_wd (EV_A_ slot, wd, ev);	2610	infy_wd (EV_A_ slot, wd, ev);
2431	else	2611	else
2432	{	2612	{
2433	WL w_;	2613	WL w_;
…		…
2439		2619
2440	if (w->wd == wd || wd == -1)	2620	if (w->wd == wd || wd == -1)
2441	{	2621	{
2442	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2622	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2443	{	2623	{
		2624	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2444	w->wd = -1;	2625	w->wd = -1;
2445	infy_add (EV_A_ w); /* re-add, no matter what */	2626	infy_add (EV_A_ w); /* re-add, no matter what */
2446	}	2627	}
2447		2628
2448	stat_timer_cb (EV_A_ &w->timer, 0);	2629	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2461		2642
2462	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2643	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2463	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2644	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2464	}	2645	}
2465		2646
2466	void inline_size	2647	inline_size void
		2648	check_2625 (EV_P)
		2649	{
		2650	/* kernels < 2.6.25 are borked
		2651	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2652	*/
		2653	struct utsname buf;
		2654	int major, minor, micro;
		2655
		2656	if (uname (&buf))
		2657	return;
		2658
		2659	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2660	return;
		2661
		2662	if (major < 2
		2663	|| (major == 2 && minor < 6)
		2664	|| (major == 2 && minor == 6 && micro < 25))
		2665	return;
		2666
		2667	fs_2625 = 1;
		2668	}
		2669
		2670	inline_size void
2467	infy_init (EV_P)	2671	infy_init (EV_P)
2468	{	2672	{
2469	if (fs_fd != -2)	2673	if (fs_fd != -2)
2470	return;	2674	return;
		2675
		2676	fs_fd = -1;
		2677
		2678	check_2625 (EV_A);
2471		2679
2472	fs_fd = inotify_init ();	2680	fs_fd = inotify_init ();
2473		2681
2474	if (fs_fd >= 0)	2682	if (fs_fd >= 0)
2475	{	2683	{
…		…
2477	ev_set_priority (&fs_w, EV_MAXPRI);	2685	ev_set_priority (&fs_w, EV_MAXPRI);
2478	ev_io_start (EV_A_ &fs_w);	2686	ev_io_start (EV_A_ &fs_w);
2479	}	2687	}
2480	}	2688	}
2481		2689
2482	void inline_size	2690	inline_size void
2483	infy_fork (EV_P)	2691	infy_fork (EV_P)
2484	{	2692	{
2485	int slot;	2693	int slot;
2486		2694
2487	if (fs_fd < 0)	2695	if (fs_fd < 0)
…		…
2503	w->wd = -1;	2711	w->wd = -1;
2504		2712
2505	if (fs_fd >= 0)	2713	if (fs_fd >= 0)
2506	infy_add (EV_A_ w); /* re-add, no matter what */	2714	infy_add (EV_A_ w); /* re-add, no matter what */
2507	else	2715	else
2508	ev_timer_start (EV_A_ &w->timer);	2716	ev_timer_again (EV_A_ &w->timer);
2509	}	2717	}
2510
2511	}	2718	}
2512	}	2719	}
2513		2720
		2721	#endif
		2722
		2723	#ifdef _WIN32
		2724	# define EV_LSTAT(p,b) _stati64 (p, b)
		2725	#else
		2726	# define EV_LSTAT(p,b) lstat (p, b)
2514	#endif	2727	#endif
2515		2728
2516	void	2729	void
2517	ev_stat_stat (EV_P_ ev_stat *w)	2730	ev_stat_stat (EV_P_ ev_stat *w)
2518	{	2731	{
…		…
2545	|| w->prev.st_atime != w->attr.st_atime	2758	|| w->prev.st_atime != w->attr.st_atime
2546	|| w->prev.st_mtime != w->attr.st_mtime	2759	|| w->prev.st_mtime != w->attr.st_mtime
2547	|| w->prev.st_ctime != w->attr.st_ctime	2760	|| w->prev.st_ctime != w->attr.st_ctime
2548	) {	2761	) {
2549	#if EV_USE_INOTIFY	2762	#if EV_USE_INOTIFY
		2763	if (fs_fd >= 0)
		2764	{
2550	infy_del (EV_A_ w);	2765	infy_del (EV_A_ w);
2551	infy_add (EV_A_ w);	2766	infy_add (EV_A_ w);
2552	ev_stat_stat (EV_A_ w); /* avoid race... */	2767	ev_stat_stat (EV_A_ w); /* avoid race... */
		2768	}
2553	#endif	2769	#endif
2554		2770
2555	ev_feed_event (EV_A_ w, EV_STAT);	2771	ev_feed_event (EV_A_ w, EV_STAT);
2556	}	2772	}
2557	}	2773	}
…		…
2560	ev_stat_start (EV_P_ ev_stat *w)	2776	ev_stat_start (EV_P_ ev_stat *w)
2561	{	2777	{
2562	if (expect_false (ev_is_active (w)))	2778	if (expect_false (ev_is_active (w)))
2563	return;	2779	return;
2564		2780
2565	/* since we use memcmp, we need to clear any padding data etc. */
2566	memset (&w->prev, 0, sizeof (ev_statdata));
2567	memset (&w->attr, 0, sizeof (ev_statdata));
2568
2569	ev_stat_stat (EV_A_ w);	2781	ev_stat_stat (EV_A_ w);
2570		2782
		2783	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2571	if (w->interval < MIN_STAT_INTERVAL)	2784	w->interval = MIN_STAT_INTERVAL;
2572	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2573		2785
2574	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2786	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2575	ev_set_priority (&w->timer, ev_priority (w));	2787	ev_set_priority (&w->timer, ev_priority (w));
2576		2788
2577	#if EV_USE_INOTIFY	2789	#if EV_USE_INOTIFY
2578	infy_init (EV_A);	2790	infy_init (EV_A);
2579		2791
2580	if (fs_fd >= 0)	2792	if (fs_fd >= 0)
2581	infy_add (EV_A_ w);	2793	infy_add (EV_A_ w);
2582	else	2794	else
2583	#endif	2795	#endif
2584	ev_timer_start (EV_A_ &w->timer);	2796	ev_timer_again (EV_A_ &w->timer);
2585		2797
2586	ev_start (EV_A_ (W)w, 1);	2798	ev_start (EV_A_ (W)w, 1);
2587		2799
2588	EV_FREQUENT_CHECK;	2800	EV_FREQUENT_CHECK;
2589	}	2801	}
…		…
2759	ev_loop (EV_A_ EVLOOP_NONBLOCK);	2971	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2760	}	2972	}
2761	}	2973	}
2762	}	2974	}
2763		2975
		2976	static void
		2977	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		2978	{
		2979	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		2980
		2981	ev_embed_stop (EV_A_ w);
		2982
		2983	{
		2984	struct ev_loop *loop = w->other;
		2985
		2986	ev_loop_fork (EV_A);
		2987	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2988	}
		2989
		2990	ev_embed_start (EV_A_ w);
		2991	}
		2992
2764	#if 0	2993	#if 0
2765	static void	2994	static void
2766	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	2995	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2767	{	2996	{
2768	ev_idle_stop (EV_A_ idle);	2997	ev_idle_stop (EV_A_ idle);
…		…
2775	if (expect_false (ev_is_active (w)))	3004	if (expect_false (ev_is_active (w)))
2776	return;	3005	return;
2777		3006
2778	{	3007	{
2779	struct ev_loop *loop = w->other;	3008	struct ev_loop *loop = w->other;
2780	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3009	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2781	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3010	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2782	}	3011	}
2783		3012
2784	EV_FREQUENT_CHECK;	3013	EV_FREQUENT_CHECK;
2785		3014
…		…
2788		3017
2789	ev_prepare_init (&w->prepare, embed_prepare_cb);	3018	ev_prepare_init (&w->prepare, embed_prepare_cb);
2790	ev_set_priority (&w->prepare, EV_MINPRI);	3019	ev_set_priority (&w->prepare, EV_MINPRI);
2791	ev_prepare_start (EV_A_ &w->prepare);	3020	ev_prepare_start (EV_A_ &w->prepare);
2792		3021
		3022	ev_fork_init (&w->fork, embed_fork_cb);
		3023	ev_fork_start (EV_A_ &w->fork);
		3024
2793	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3025	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2794		3026
2795	ev_start (EV_A_ (W)w, 1);	3027	ev_start (EV_A_ (W)w, 1);
2796		3028
2797	EV_FREQUENT_CHECK;	3029	EV_FREQUENT_CHECK;
…		…
2804	if (expect_false (!ev_is_active (w)))	3036	if (expect_false (!ev_is_active (w)))
2805	return;	3037	return;
2806		3038
2807	EV_FREQUENT_CHECK;	3039	EV_FREQUENT_CHECK;
2808		3040
2809	ev_io_stop (EV_A_ &w->io);	3041	ev_io_stop (EV_A_ &w->io);
2810	ev_prepare_stop (EV_A_ &w->prepare);	3042	ev_prepare_stop (EV_A_ &w->prepare);
2811		3043	ev_fork_stop (EV_A_ &w->fork);
2812	ev_stop (EV_A_ (W)w);
2813		3044
2814	EV_FREQUENT_CHECK;	3045	EV_FREQUENT_CHECK;
2815	}	3046	}
2816	#endif	3047	#endif
2817		3048
…		…
2914	once_cb (EV_P_ struct ev_once *once, int revents)	3145	once_cb (EV_P_ struct ev_once *once, int revents)
2915	{	3146	{
2916	void (*cb)(int revents, void *arg) = once->cb;	3147	void (*cb)(int revents, void *arg) = once->cb;
2917	void *arg = once->arg;	3148	void *arg = once->arg;
2918		3149
2919	ev_io_stop (EV_A_ &once->io);	3150	ev_io_stop (EV_A_ &once->io);
2920	ev_timer_stop (EV_A_ &once->to);	3151	ev_timer_stop (EV_A_ &once->to);
2921	ev_free (once);	3152	ev_free (once);
2922		3153
2923	cb (revents, arg);	3154	cb (revents, arg);
2924	}	3155	}
2925		3156
2926	static void	3157	static void
2927	once_cb_io (EV_P_ ev_io *w, int revents)	3158	once_cb_io (EV_P_ ev_io *w, int revents)
2928	{	3159	{
2929	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3160	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3161
		3162	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2930	}	3163	}
2931		3164
2932	static void	3165	static void
2933	once_cb_to (EV_P_ ev_timer *w, int revents)	3166	once_cb_to (EV_P_ ev_timer *w, int revents)
2934	{	3167	{
2935	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3168	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3169
		3170	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2936	}	3171	}
2937		3172
2938	void	3173	void
2939	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3174	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2940	{	3175	{
…		…
2962	ev_timer_set (&once->to, timeout, 0.);	3197	ev_timer_set (&once->to, timeout, 0.);
2963	ev_timer_start (EV_A_ &once->to);	3198	ev_timer_start (EV_A_ &once->to);
2964	}	3199	}
2965	}	3200	}
2966		3201
		3202	/*****************************************************************************/
		3203
		3204	#if 0
		3205	void
		3206	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3207	{
		3208	int i, j;
		3209	ev_watcher_list *wl, *wn;
		3210
		3211	if (types & (EV_IO | EV_EMBED))
		3212	for (i = 0; i < anfdmax; ++i)
		3213	for (wl = anfds [i].head; wl; )
		3214	{
		3215	wn = wl->next;
		3216
		3217	#if EV_EMBED_ENABLE
		3218	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3219	{
		3220	if (types & EV_EMBED)
		3221	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3222	}
		3223	else
		3224	#endif
		3225	#if EV_USE_INOTIFY
		3226	if (ev_cb ((ev_io *)wl) == infy_cb)
		3227	;
		3228	else
		3229	#endif
		3230	if ((ev_io *)wl != &pipeev)
		3231	if (types & EV_IO)
		3232	cb (EV_A_ EV_IO, wl);
		3233
		3234	wl = wn;
		3235	}
		3236
		3237	if (types & (EV_TIMER | EV_STAT))
		3238	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3239	#if EV_STAT_ENABLE
		3240	/*TODO: timer is not always active*/
		3241	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3242	{
		3243	if (types & EV_STAT)
		3244	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3245	}
		3246	else
		3247	#endif
		3248	if (types & EV_TIMER)
		3249	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3250
		3251	#if EV_PERIODIC_ENABLE
		3252	if (types & EV_PERIODIC)
		3253	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3254	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3255	#endif
		3256
		3257	#if EV_IDLE_ENABLE
		3258	if (types & EV_IDLE)
		3259	for (j = NUMPRI; i--; )
		3260	for (i = idlecnt [j]; i--; )
		3261	cb (EV_A_ EV_IDLE, idles [j][i]);
		3262	#endif
		3263
		3264	#if EV_FORK_ENABLE
		3265	if (types & EV_FORK)
		3266	for (i = forkcnt; i--; )
		3267	if (ev_cb (forks [i]) != embed_fork_cb)
		3268	cb (EV_A_ EV_FORK, forks [i]);
		3269	#endif
		3270
		3271	#if EV_ASYNC_ENABLE
		3272	if (types & EV_ASYNC)
		3273	for (i = asynccnt; i--; )
		3274	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3275	#endif
		3276
		3277	if (types & EV_PREPARE)
		3278	for (i = preparecnt; i--; )
		3279	#if EV_EMBED_ENABLE
		3280	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3281	#endif
		3282	cb (EV_A_ EV_PREPARE, prepares [i]);
		3283
		3284	if (types & EV_CHECK)
		3285	for (i = checkcnt; i--; )
		3286	cb (EV_A_ EV_CHECK, checks [i]);
		3287
		3288	if (types & EV_SIGNAL)
		3289	for (i = 0; i < signalmax; ++i)
		3290	for (wl = signals [i].head; wl; )
		3291	{
		3292	wn = wl->next;
		3293	cb (EV_A_ EV_SIGNAL, wl);
		3294	wl = wn;
		3295	}
		3296
		3297	if (types & EV_CHILD)
		3298	for (i = EV_PID_HASHSIZE; i--; )
		3299	for (wl = childs [i]; wl; )
		3300	{
		3301	wn = wl->next;
		3302	cb (EV_A_ EV_CHILD, wl);
		3303	wl = wn;
		3304	}
		3305	/* EV_STAT 0x00001000 /* stat data changed */
		3306	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3307	}
		3308	#endif
		3309
2967	#if EV_MULTIPLICITY	3310	#if EV_MULTIPLICITY
2968	#include "ev_wrap.h"	3311	#include "ev_wrap.h"
2969	#endif	3312	#endif
2970		3313
2971	#ifdef __cplusplus	3314	#ifdef __cplusplus

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