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Comparing libev/ev.c (file contents):
Revision 1.257 by root, Sun Jun 29 22:32:51 2008 UTC vs.
Revision 1.296 by root, Thu Jul 9 09:11:20 2009 UTC

1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without modifica-	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* tion, are permitted provided that the following conditions are met:	8	* tion, are permitted provided that the following conditions are met:
9	*	9	*
…		…
47	# include EV_CONFIG_H	47	# include EV_CONFIG_H
48	# else	48	# else
49	# include "config.h"	49	# include "config.h"
50	# endif	50	# endif
51		51
		52	# if HAVE_CLOCK_SYSCALL
		53	# ifndef EV_USE_CLOCK_SYSCALL
		54	# define EV_USE_CLOCK_SYSCALL 1
		55	# ifndef EV_USE_REALTIME
		56	# define EV_USE_REALTIME 0
		57	# endif
		58	# ifndef EV_USE_MONOTONIC
		59	# define EV_USE_MONOTONIC 1
		60	# endif
		61	# endif
		62	# elif !defined(EV_USE_CLOCK_SYSCALL)
		63	# define EV_USE_CLOCK_SYSCALL 0
		64	# endif
		65
52	# if HAVE_CLOCK_GETTIME	66	# if HAVE_CLOCK_GETTIME
53	# ifndef EV_USE_MONOTONIC	67	# ifndef EV_USE_MONOTONIC
54	# define EV_USE_MONOTONIC 1	68	# define EV_USE_MONOTONIC 1
55	# endif	69	# endif
56	# ifndef EV_USE_REALTIME	70	# ifndef EV_USE_REALTIME
57	# define EV_USE_REALTIME 1	71	# define EV_USE_REALTIME 0
58	# endif	72	# endif
59	# else	73	# else
60	# ifndef EV_USE_MONOTONIC	74	# ifndef EV_USE_MONOTONIC
61	# define EV_USE_MONOTONIC 0	75	# define EV_USE_MONOTONIC 0
62	# endif	76	# endif
…		…
164	# endif	178	# endif
165	#endif	179	#endif
166		180
167	/* this block tries to deduce configuration from header-defined symbols and defaults */	181	/* this block tries to deduce configuration from header-defined symbols and defaults */
168		182
		183	#ifndef EV_USE_CLOCK_SYSCALL
		184	# if __linux && __GLIBC__ >= 2
		185	# define EV_USE_CLOCK_SYSCALL 1
		186	# else
		187	# define EV_USE_CLOCK_SYSCALL 0
		188	# endif
		189	#endif
		190
169	#ifndef EV_USE_MONOTONIC	191	#ifndef EV_USE_MONOTONIC
170	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0	192	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
171	# define EV_USE_MONOTONIC 1	193	# define EV_USE_MONOTONIC 1
172	# else	194	# else
173	# define EV_USE_MONOTONIC 0	195	# define EV_USE_MONOTONIC 0
174	# endif	196	# endif
175	#endif	197	#endif
176		198
177	#ifndef EV_USE_REALTIME	199	#ifndef EV_USE_REALTIME
178	# define EV_USE_REALTIME 0	200	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
179	#endif	201	#endif
180		202
181	#ifndef EV_USE_NANOSLEEP	203	#ifndef EV_USE_NANOSLEEP
182	# if _POSIX_C_SOURCE >= 199309L	204	# if _POSIX_C_SOURCE >= 199309L
183	# define EV_USE_NANOSLEEP 1	205	# define EV_USE_NANOSLEEP 1
…		…
262		284
263	#ifndef EV_HEAP_CACHE_AT	285	#ifndef EV_HEAP_CACHE_AT
264	# define EV_HEAP_CACHE_AT !EV_MINIMAL	286	# define EV_HEAP_CACHE_AT !EV_MINIMAL
265	#endif	287	#endif
266		288
		289	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		290	/* which makes programs even slower. might work on other unices, too. */
		291	#if EV_USE_CLOCK_SYSCALL
		292	# include <syscall.h>
		293	# ifdef SYS_clock_gettime
		294	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		295	# undef EV_USE_MONOTONIC
		296	# define EV_USE_MONOTONIC 1
		297	# else
		298	# undef EV_USE_CLOCK_SYSCALL
		299	# define EV_USE_CLOCK_SYSCALL 0
		300	# endif
		301	#endif
		302
267	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	303	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
268		304
269	#ifndef CLOCK_MONOTONIC	305	#ifndef CLOCK_MONOTONIC
270	# undef EV_USE_MONOTONIC	306	# undef EV_USE_MONOTONIC
271	# define EV_USE_MONOTONIC 0	307	# define EV_USE_MONOTONIC 0
…		…
286	# include <sys/select.h>	322	# include <sys/select.h>
287	# endif	323	# endif
288	#endif	324	#endif
289		325
290	#if EV_USE_INOTIFY	326	#if EV_USE_INOTIFY
		327	# include <sys/utsname.h>
		328	# include <sys/statfs.h>
291	# include <sys/inotify.h>	329	# include <sys/inotify.h>
		330	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
		331	# ifndef IN_DONT_FOLLOW
		332	# undef EV_USE_INOTIFY
		333	# define EV_USE_INOTIFY 0
		334	# endif
292	#endif	335	#endif
293		336
294	#if EV_SELECT_IS_WINSOCKET	337	#if EV_SELECT_IS_WINSOCKET
295	# include <winsock.h>	338	# include <winsock.h>
296	#endif	339	#endif
…		…
348	# define inline_speed static noinline	391	# define inline_speed static noinline
349	#else	392	#else
350	# define inline_speed static inline	393	# define inline_speed static inline
351	#endif	394	#endif
352		395
353	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	396	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		397
		398	#if EV_MINPRI == EV_MAXPRI
		399	# define ABSPRI(w) (((W)w), 0)
		400	#else
354	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	401	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		402	#endif
355		403
356	#define EMPTY /* required for microsofts broken pseudo-c compiler */	404	#define EMPTY /* required for microsofts broken pseudo-c compiler */
357	#define EMPTY2(a,b) /* used to suppress some warnings */	405	#define EMPTY2(a,b) /* used to suppress some warnings */
358		406
359	typedef ev_watcher *W;	407	typedef ev_watcher *W;
…		…
361	typedef ev_watcher_time *WT;	409	typedef ev_watcher_time *WT;
362		410
363	#define ev_active(w) ((W)(w))->active	411	#define ev_active(w) ((W)(w))->active
364	#define ev_at(w) ((WT)(w))->at	412	#define ev_at(w) ((WT)(w))->at
365		413
366	#if EV_USE_MONOTONIC	414	#if EV_USE_REALTIME
367	/* sig_atomic_t is used to avoid per-thread variables or locking but still */	415	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
368	/* giving it a reasonably high chance of working on typical architetcures */	416	/* giving it a reasonably high chance of working on typical architetcures */
		417	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		418	#endif
		419
		420	#if EV_USE_MONOTONIC
369	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	421	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
370	#endif	422	#endif
371		423
372	#ifdef _WIN32	424	#ifdef _WIN32
373	# include "ev_win32.c"	425	# include "ev_win32.c"
…		…
382	{	434	{
383	syserr_cb = cb;	435	syserr_cb = cb;
384	}	436	}
385		437
386	static void noinline	438	static void noinline
387	syserr (const char *msg)	439	ev_syserr (const char *msg)
388	{	440	{
389	if (!msg)	441	if (!msg)
390	msg = "(libev) system error";	442	msg = "(libev) system error";
391		443
392	if (syserr_cb)	444	if (syserr_cb)
…		…
438	#define ev_malloc(size) ev_realloc (0, (size))	490	#define ev_malloc(size) ev_realloc (0, (size))
439	#define ev_free(ptr) ev_realloc ((ptr), 0)	491	#define ev_free(ptr) ev_realloc ((ptr), 0)
440		492
441	/*****************************************************************************/	493	/*****************************************************************************/
442		494
		495	/* file descriptor info structure */
443	typedef struct	496	typedef struct
444	{	497	{
445	WL head;	498	WL head;
446	unsigned char events;	499	unsigned char events; /* the events watched for */
		500	unsigned char reify; /* flag set when this ANFD needs reification */
		501	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
447	unsigned char reify;	502	unsigned char unused;
		503	#if EV_USE_EPOLL
		504	unsigned int egen; /* generation counter to counter epoll bugs */
		505	#endif
448	#if EV_SELECT_IS_WINSOCKET	506	#if EV_SELECT_IS_WINSOCKET
449	SOCKET handle;	507	SOCKET handle;
450	#endif	508	#endif
451	} ANFD;	509	} ANFD;
452		510
		511	/* stores the pending event set for a given watcher */
453	typedef struct	512	typedef struct
454	{	513	{
455	W w;	514	W w;
456	int events;	515	int events; /* the pending event set for the given watcher */
457	} ANPENDING;	516	} ANPENDING;
458		517
459	#if EV_USE_INOTIFY	518	#if EV_USE_INOTIFY
460	/* hash table entry per inotify-id */	519	/* hash table entry per inotify-id */
461	typedef struct	520	typedef struct
…		…
464	} ANFS;	523	} ANFS;
465	#endif	524	#endif
466		525
467	/* Heap Entry */	526	/* Heap Entry */
468	#if EV_HEAP_CACHE_AT	527	#if EV_HEAP_CACHE_AT
		528	/* a heap element */
469	typedef struct {	529	typedef struct {
470	ev_tstamp at;	530	ev_tstamp at;
471	WT w;	531	WT w;
472	} ANHE;	532	} ANHE;
473		533
474	#define ANHE_w(he) (he).w /* access watcher, read-write */	534	#define ANHE_w(he) (he).w /* access watcher, read-write */
475	#define ANHE_at(he) (he).at /* access cached at, read-only */	535	#define ANHE_at(he) (he).at /* access cached at, read-only */
476	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */	536	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
477	#else	537	#else
		538	/* a heap element */
478	typedef WT ANHE;	539	typedef WT ANHE;
479		540
480	#define ANHE_w(he) (he)	541	#define ANHE_w(he) (he)
481	#define ANHE_at(he) (he)->at	542	#define ANHE_at(he) (he)->at
482	#define ANHE_at_cache(he)	543	#define ANHE_at_cache(he)
…		…
508		569
509	#endif	570	#endif
510		571
511	/*****************************************************************************/	572	/*****************************************************************************/
512		573
		574	#ifndef EV_HAVE_EV_TIME
513	ev_tstamp	575	ev_tstamp
514	ev_time (void)	576	ev_time (void)
515	{	577	{
516	#if EV_USE_REALTIME	578	#if EV_USE_REALTIME
		579	if (expect_true (have_realtime))
		580	{
517	struct timespec ts;	581	struct timespec ts;
518	clock_gettime (CLOCK_REALTIME, &ts);	582	clock_gettime (CLOCK_REALTIME, &ts);
519	return ts.tv_sec + ts.tv_nsec * 1e-9;	583	return ts.tv_sec + ts.tv_nsec * 1e-9;
520	#else	584	}
		585	#endif
		586
521	struct timeval tv;	587	struct timeval tv;
522	gettimeofday (&tv, 0);	588	gettimeofday (&tv, 0);
523	return tv.tv_sec + tv.tv_usec * 1e-6;	589	return tv.tv_sec + tv.tv_usec * 1e-6;
524	#endif
525	}	590	}
		591	#endif
526		592
527	ev_tstamp inline_size	593	inline_size ev_tstamp
528	get_clock (void)	594	get_clock (void)
529	{	595	{
530	#if EV_USE_MONOTONIC	596	#if EV_USE_MONOTONIC
531	if (expect_true (have_monotonic))	597	if (expect_true (have_monotonic))
532	{	598	{
…		…
566		632
567	tv.tv_sec = (time_t)delay;	633	tv.tv_sec = (time_t)delay;
568	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	634	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
569		635
570	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */	636	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
571	/* somehting nto guaranteed by newer posix versions, but guaranteed */	637	/* somehting not guaranteed by newer posix versions, but guaranteed */
572	/* by older ones */	638	/* by older ones */
573	select (0, 0, 0, 0, &tv);	639	select (0, 0, 0, 0, &tv);
574	#endif	640	#endif
575	}	641	}
576	}	642	}
577		643
578	/*****************************************************************************/	644	/*****************************************************************************/
579		645
580	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	646	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
581		647
582	int inline_size	648	/* find a suitable new size for the given array, */
		649	/* hopefully by rounding to a ncie-to-malloc size */
		650	inline_size int
583	array_nextsize (int elem, int cur, int cnt)	651	array_nextsize (int elem, int cur, int cnt)
584	{	652	{
585	int ncur = cur + 1;	653	int ncur = cur + 1;
586		654
587	do	655	do
…		…
604	array_realloc (int elem, void *base, int *cur, int cnt)	672	array_realloc (int elem, void *base, int *cur, int cnt)
605	{	673	{
606	*cur = array_nextsize (elem, *cur, cnt);	674	*cur = array_nextsize (elem, *cur, cnt);
607	return ev_realloc (base, elem * *cur);	675	return ev_realloc (base, elem * *cur);
608	}	676	}
		677
		678	#define array_init_zero(base,count) \
		679	memset ((void *)(base), 0, sizeof (*(base)) * (count))
609		680
610	#define array_needsize(type,base,cur,cnt,init) \	681	#define array_needsize(type,base,cur,cnt,init) \
611	if (expect_false ((cnt) > (cur))) \	682	if (expect_false ((cnt) > (cur))) \
612	{ \	683	{ \
613	int ocur_ = (cur); \	684	int ocur_ = (cur); \
…		…
625	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	696	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
626	}	697	}
627	#endif	698	#endif
628		699
629	#define array_free(stem, idx) \	700	#define array_free(stem, idx) \
630	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	701	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
631		702
632	/*****************************************************************************/	703	/*****************************************************************************/
		704
		705	/* dummy callback for pending events */
		706	static void noinline
		707	pendingcb (EV_P_ ev_prepare *w, int revents)
		708	{
		709	}
633		710
634	void noinline	711	void noinline
635	ev_feed_event (EV_P_ void *w, int revents)	712	ev_feed_event (EV_P_ void *w, int revents)
636	{	713	{
637	W w_ = (W)w;	714	W w_ = (W)w;
…		…
646	pendings [pri][w_->pending - 1].w = w_;	723	pendings [pri][w_->pending - 1].w = w_;
647	pendings [pri][w_->pending - 1].events = revents;	724	pendings [pri][w_->pending - 1].events = revents;
648	}	725	}
649	}	726	}
650		727
651	void inline_speed	728	inline_speed void
		729	feed_reverse (EV_P_ W w)
		730	{
		731	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		732	rfeeds [rfeedcnt++] = w;
		733	}
		734
		735	inline_size void
		736	feed_reverse_done (EV_P_ int revents)
		737	{
		738	do
		739	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		740	while (rfeedcnt);
		741	}
		742
		743	inline_speed void
652	queue_events (EV_P_ W *events, int eventcnt, int type)	744	queue_events (EV_P_ W *events, int eventcnt, int type)
653	{	745	{
654	int i;	746	int i;
655		747
656	for (i = 0; i < eventcnt; ++i)	748	for (i = 0; i < eventcnt; ++i)
657	ev_feed_event (EV_A_ events [i], type);	749	ev_feed_event (EV_A_ events [i], type);
658	}	750	}
659		751
660	/*****************************************************************************/	752	/*****************************************************************************/
661		753
662	void inline_size	754	inline_speed void
663	anfds_init (ANFD *base, int count)
664	{
665	while (count--)
666	{
667	base->head = 0;
668	base->events = EV_NONE;
669	base->reify = 0;
670
671	++base;
672	}
673	}
674
675	void inline_speed
676	fd_event (EV_P_ int fd, int revents)	755	fd_event (EV_P_ int fd, int revents)
677	{	756	{
678	ANFD *anfd = anfds + fd;	757	ANFD *anfd = anfds + fd;
679	ev_io *w;	758	ev_io *w;
680		759
…		…
692	{	771	{
693	if (fd >= 0 && fd < anfdmax)	772	if (fd >= 0 && fd < anfdmax)
694	fd_event (EV_A_ fd, revents);	773	fd_event (EV_A_ fd, revents);
695	}	774	}
696		775
697	void inline_size	776	/* make sure the external fd watch events are in-sync */
		777	/* with the kernel/libev internal state */
		778	inline_size void
698	fd_reify (EV_P)	779	fd_reify (EV_P)
699	{	780	{
700	int i;	781	int i;
701		782
702	for (i = 0; i < fdchangecnt; ++i)	783	for (i = 0; i < fdchangecnt; ++i)
…		…
717	#ifdef EV_FD_TO_WIN32_HANDLE	798	#ifdef EV_FD_TO_WIN32_HANDLE
718	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	799	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
719	#else	800	#else
720	anfd->handle = _get_osfhandle (fd);	801	anfd->handle = _get_osfhandle (fd);
721	#endif	802	#endif
722	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	803	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
723	}	804	}
724	#endif	805	#endif
725		806
726	{	807	{
727	unsigned char o_events = anfd->events;	808	unsigned char o_events = anfd->events;
728	unsigned char o_reify = anfd->reify;	809	unsigned char o_reify = anfd->reify;
729		810
730	anfd->reify = 0;	811	anfd->reify = 0;
731	anfd->events = events;	812	anfd->events = events;
732		813
733	if (o_events != events || o_reify & EV_IOFDSET)	814	if (o_events != events || o_reify & EV__IOFDSET)
734	backend_modify (EV_A_ fd, o_events, events);	815	backend_modify (EV_A_ fd, o_events, events);
735	}	816	}
736	}	817	}
737		818
738	fdchangecnt = 0;	819	fdchangecnt = 0;
739	}	820	}
740		821
741	void inline_size	822	/* something about the given fd changed */
		823	inline_size void
742	fd_change (EV_P_ int fd, int flags)	824	fd_change (EV_P_ int fd, int flags)
743	{	825	{
744	unsigned char reify = anfds [fd].reify;	826	unsigned char reify = anfds [fd].reify;
745	anfds [fd].reify |= flags;	827	anfds [fd].reify |= flags;
746		828
…		…
750	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	832	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
751	fdchanges [fdchangecnt - 1] = fd;	833	fdchanges [fdchangecnt - 1] = fd;
752	}	834	}
753	}	835	}
754		836
755	void inline_speed	837	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		838	inline_speed void
756	fd_kill (EV_P_ int fd)	839	fd_kill (EV_P_ int fd)
757	{	840	{
758	ev_io *w;	841	ev_io *w;
759		842
760	while ((w = (ev_io *)anfds [fd].head))	843	while ((w = (ev_io *)anfds [fd].head))
…		…
762	ev_io_stop (EV_A_ w);	845	ev_io_stop (EV_A_ w);
763	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	846	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
764	}	847	}
765	}	848	}
766		849
767	int inline_size	850	/* check whether the given fd is atcually valid, for error recovery */
		851	inline_size int
768	fd_valid (int fd)	852	fd_valid (int fd)
769	{	853	{
770	#ifdef _WIN32	854	#ifdef _WIN32
771	return _get_osfhandle (fd) != -1;	855	return _get_osfhandle (fd) != -1;
772	#else	856	#else
…		…
808		892
809	for (fd = 0; fd < anfdmax; ++fd)	893	for (fd = 0; fd < anfdmax; ++fd)
810	if (anfds [fd].events)	894	if (anfds [fd].events)
811	{	895	{
812	anfds [fd].events = 0;	896	anfds [fd].events = 0;
		897	anfds [fd].emask = 0;
813	fd_change (EV_A_ fd, EV_IOFDSET | 1);	898	fd_change (EV_A_ fd, EV__IOFDSET | 1);
814	}	899	}
815	}	900	}
816		901
817	/*****************************************************************************/	902	/*****************************************************************************/
818		903
…		…
834	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	919	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
835	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)	920	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
836	#define UPHEAP_DONE(p,k) ((p) == (k))	921	#define UPHEAP_DONE(p,k) ((p) == (k))
837		922
838	/* away from the root */	923	/* away from the root */
839	void inline_speed	924	inline_speed void
840	downheap (ANHE *heap, int N, int k)	925	downheap (ANHE *heap, int N, int k)
841	{	926	{
842	ANHE he = heap [k];	927	ANHE he = heap [k];
843	ANHE *E = heap + N + HEAP0;	928	ANHE *E = heap + N + HEAP0;
844		929
…		…
884	#define HEAP0 1	969	#define HEAP0 1
885	#define HPARENT(k) ((k) >> 1)	970	#define HPARENT(k) ((k) >> 1)
886	#define UPHEAP_DONE(p,k) (!(p))	971	#define UPHEAP_DONE(p,k) (!(p))
887		972
888	/* away from the root */	973	/* away from the root */
889	void inline_speed	974	inline_speed void
890	downheap (ANHE *heap, int N, int k)	975	downheap (ANHE *heap, int N, int k)
891	{	976	{
892	ANHE he = heap [k];	977	ANHE he = heap [k];
893		978
894	for (;;)	979	for (;;)
…		…
914	ev_active (ANHE_w (he)) = k;	999	ev_active (ANHE_w (he)) = k;
915	}	1000	}
916	#endif	1001	#endif
917		1002
918	/* towards the root */	1003	/* towards the root */
919	void inline_speed	1004	inline_speed void
920	upheap (ANHE *heap, int k)	1005	upheap (ANHE *heap, int k)
921	{	1006	{
922	ANHE he = heap [k];	1007	ANHE he = heap [k];
923		1008
924	for (;;)	1009	for (;;)
…		…
935		1020
936	heap [k] = he;	1021	heap [k] = he;
937	ev_active (ANHE_w (he)) = k;	1022	ev_active (ANHE_w (he)) = k;
938	}	1023	}
939		1024
940	void inline_size	1025	/* move an element suitably so it is in a correct place */
		1026	inline_size void
941	adjustheap (ANHE *heap, int N, int k)	1027	adjustheap (ANHE *heap, int N, int k)
942	{	1028	{
943	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1029	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
944	upheap (heap, k);	1030	upheap (heap, k);
945	else	1031	else
946	downheap (heap, N, k);	1032	downheap (heap, N, k);
947	}	1033	}
948		1034
949	/* rebuild the heap: this function is used only once and executed rarely */	1035	/* rebuild the heap: this function is used only once and executed rarely */
950	void inline_size	1036	inline_size void
951	reheap (ANHE *heap, int N)	1037	reheap (ANHE *heap, int N)
952	{	1038	{
953	int i;	1039	int i;
954		1040
955	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */	1041	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
…		…
958	upheap (heap, i + HEAP0);	1044	upheap (heap, i + HEAP0);
959	}	1045	}
960		1046
961	/*****************************************************************************/	1047	/*****************************************************************************/
962		1048
		1049	/* associate signal watchers to a signal signal */
963	typedef struct	1050	typedef struct
964	{	1051	{
965	WL head;	1052	WL head;
966	EV_ATOMIC_T gotsig;	1053	EV_ATOMIC_T gotsig;
967	} ANSIG;	1054	} ANSIG;
…		…
969	static ANSIG *signals;	1056	static ANSIG *signals;
970	static int signalmax;	1057	static int signalmax;
971		1058
972	static EV_ATOMIC_T gotsig;	1059	static EV_ATOMIC_T gotsig;
973		1060
974	void inline_size
975	signals_init (ANSIG *base, int count)
976	{
977	while (count--)
978	{
979	base->head = 0;
980	base->gotsig = 0;
981
982	++base;
983	}
984	}
985
986	/*****************************************************************************/	1061	/*****************************************************************************/
987		1062
988	void inline_speed	1063	/* used to prepare libev internal fd's */
		1064	/* this is not fork-safe */
		1065	inline_speed void
989	fd_intern (int fd)	1066	fd_intern (int fd)
990	{	1067	{
991	#ifdef _WIN32	1068	#ifdef _WIN32
992	unsigned long arg = 1;	1069	unsigned long arg = 1;
993	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1070	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
998	}	1075	}
999		1076
1000	static void noinline	1077	static void noinline
1001	evpipe_init (EV_P)	1078	evpipe_init (EV_P)
1002	{	1079	{
1003	if (!ev_is_active (&pipeev))	1080	if (!ev_is_active (&pipe_w))
1004	{	1081	{
1005	#if EV_USE_EVENTFD	1082	#if EV_USE_EVENTFD
1006	if ((evfd = eventfd (0, 0)) >= 0)	1083	if ((evfd = eventfd (0, 0)) >= 0)
1007	{	1084	{
1008	evpipe [0] = -1;	1085	evpipe [0] = -1;
1009	fd_intern (evfd);	1086	fd_intern (evfd);
1010	ev_io_set (&pipeev, evfd, EV_READ);	1087	ev_io_set (&pipe_w, evfd, EV_READ);
1011	}	1088	}
1012	else	1089	else
1013	#endif	1090	#endif
1014	{	1091	{
1015	while (pipe (evpipe))	1092	while (pipe (evpipe))
1016	syserr ("(libev) error creating signal/async pipe");	1093	ev_syserr ("(libev) error creating signal/async pipe");
1017		1094
1018	fd_intern (evpipe [0]);	1095	fd_intern (evpipe [0]);
1019	fd_intern (evpipe [1]);	1096	fd_intern (evpipe [1]);
1020	ev_io_set (&pipeev, evpipe [0], EV_READ);	1097	ev_io_set (&pipe_w, evpipe [0], EV_READ);
1021	}	1098	}
1022		1099
1023	ev_io_start (EV_A_ &pipeev);	1100	ev_io_start (EV_A_ &pipe_w);
1024	ev_unref (EV_A); /* watcher should not keep loop alive */	1101	ev_unref (EV_A); /* watcher should not keep loop alive */
1025	}	1102	}
1026	}	1103	}
1027		1104
1028	void inline_size	1105	inline_size void
1029	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1106	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1030	{	1107	{
1031	if (!*flag)	1108	if (!*flag)
1032	{	1109	{
1033	int old_errno = errno; /* save errno because write might clobber it */	1110	int old_errno = errno; /* save errno because write might clobber it */
…		…
1046		1123
1047	errno = old_errno;	1124	errno = old_errno;
1048	}	1125	}
1049	}	1126	}
1050		1127
		1128	/* called whenever the libev signal pipe */
		1129	/* got some events (signal, async) */
1051	static void	1130	static void
1052	pipecb (EV_P_ ev_io *iow, int revents)	1131	pipecb (EV_P_ ev_io *iow, int revents)
1053	{	1132	{
1054	#if EV_USE_EVENTFD	1133	#if EV_USE_EVENTFD
1055	if (evfd >= 0)	1134	if (evfd >= 0)
…		…
1111	ev_feed_signal_event (EV_P_ int signum)	1190	ev_feed_signal_event (EV_P_ int signum)
1112	{	1191	{
1113	WL w;	1192	WL w;
1114		1193
1115	#if EV_MULTIPLICITY	1194	#if EV_MULTIPLICITY
1116	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1195	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1117	#endif	1196	#endif
1118		1197
1119	--signum;	1198	--signum;
1120		1199
1121	if (signum < 0 || signum >= signalmax)	1200	if (signum < 0 || signum >= signalmax)
…		…
1137		1216
1138	#ifndef WIFCONTINUED	1217	#ifndef WIFCONTINUED
1139	# define WIFCONTINUED(status) 0	1218	# define WIFCONTINUED(status) 0
1140	#endif	1219	#endif
1141		1220
1142	void inline_speed	1221	/* handle a single child status event */
		1222	inline_speed void
1143	child_reap (EV_P_ int chain, int pid, int status)	1223	child_reap (EV_P_ int chain, int pid, int status)
1144	{	1224	{
1145	ev_child *w;	1225	ev_child *w;
1146	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1226	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1147		1227
…		…
1160		1240
1161	#ifndef WCONTINUED	1241	#ifndef WCONTINUED
1162	# define WCONTINUED 0	1242	# define WCONTINUED 0
1163	#endif	1243	#endif
1164		1244
		1245	/* called on sigchld etc., calls waitpid */
1165	static void	1246	static void
1166	childcb (EV_P_ ev_signal *sw, int revents)	1247	childcb (EV_P_ ev_signal *sw, int revents)
1167	{	1248	{
1168	int pid, status;	1249	int pid, status;
1169		1250
…		…
1250	/* kqueue is borked on everything but netbsd apparently */	1331	/* kqueue is borked on everything but netbsd apparently */
1251	/* it usually doesn't work correctly on anything but sockets and pipes */	1332	/* it usually doesn't work correctly on anything but sockets and pipes */
1252	flags &= ~EVBACKEND_KQUEUE;	1333	flags &= ~EVBACKEND_KQUEUE;
1253	#endif	1334	#endif
1254	#ifdef __APPLE__	1335	#ifdef __APPLE__
1255	// flags &= ~EVBACKEND_KQUEUE; for documentation	1336	/* only select works correctly on that "unix-certified" platform */
1256	flags &= ~EVBACKEND_POLL;	1337	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1338	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1257	#endif	1339	#endif
1258		1340
1259	return flags;	1341	return flags;
1260	}	1342	}
1261		1343
…		…
1281	ev_loop_count (EV_P)	1363	ev_loop_count (EV_P)
1282	{	1364	{
1283	return loop_count;	1365	return loop_count;
1284	}	1366	}
1285		1367
		1368	unsigned int
		1369	ev_loop_depth (EV_P)
		1370	{
		1371	return loop_depth;
		1372	}
		1373
1286	void	1374	void
1287	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1375	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1288	{	1376	{
1289	io_blocktime = interval;	1377	io_blocktime = interval;
1290	}	1378	}
…		…
1293	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1381	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1294	{	1382	{
1295	timeout_blocktime = interval;	1383	timeout_blocktime = interval;
1296	}	1384	}
1297		1385
		1386	/* initialise a loop structure, must be zero-initialised */
1298	static void noinline	1387	static void noinline
1299	loop_init (EV_P_ unsigned int flags)	1388	loop_init (EV_P_ unsigned int flags)
1300	{	1389	{
1301	if (!backend)	1390	if (!backend)
1302	{	1391	{
		1392	#if EV_USE_REALTIME
		1393	if (!have_realtime)
		1394	{
		1395	struct timespec ts;
		1396
		1397	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1398	have_realtime = 1;
		1399	}
		1400	#endif
		1401
1303	#if EV_USE_MONOTONIC	1402	#if EV_USE_MONOTONIC
		1403	if (!have_monotonic)
1304	{	1404	{
1305	struct timespec ts;	1405	struct timespec ts;
		1406
1306	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1407	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1307	have_monotonic = 1;	1408	have_monotonic = 1;
1308	}	1409	}
1309	#endif	1410	#endif
1310		1411
1311	ev_rt_now = ev_time ();	1412	ev_rt_now = ev_time ();
1312	mn_now = get_clock ();	1413	mn_now = get_clock ();
1313	now_floor = mn_now;	1414	now_floor = mn_now;
1314	rtmn_diff = ev_rt_now - mn_now;	1415	rtmn_diff = ev_rt_now - mn_now;
		1416	invoke_cb = ev_invoke_pending;
1315		1417
1316	io_blocktime = 0.;	1418	io_blocktime = 0.;
1317	timeout_blocktime = 0.;	1419	timeout_blocktime = 0.;
1318	backend = 0;	1420	backend = 0;
1319	backend_fd = -1;	1421	backend_fd = -1;
…		…
1350	#endif	1452	#endif
1351	#if EV_USE_SELECT	1453	#if EV_USE_SELECT
1352	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1454	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1353	#endif	1455	#endif
1354		1456
		1457	ev_prepare_init (&pending_w, pendingcb);
		1458
1355	ev_init (&pipeev, pipecb);	1459	ev_init (&pipe_w, pipecb);
1356	ev_set_priority (&pipeev, EV_MAXPRI);	1460	ev_set_priority (&pipe_w, EV_MAXPRI);
1357	}	1461	}
1358	}	1462	}
1359		1463
		1464	/* free up a loop structure */
1360	static void noinline	1465	static void noinline
1361	loop_destroy (EV_P)	1466	loop_destroy (EV_P)
1362	{	1467	{
1363	int i;	1468	int i;
1364		1469
1365	if (ev_is_active (&pipeev))	1470	if (ev_is_active (&pipe_w))
1366	{	1471	{
1367	ev_ref (EV_A); /* signal watcher */	1472	ev_ref (EV_A); /* signal watcher */
1368	ev_io_stop (EV_A_ &pipeev);	1473	ev_io_stop (EV_A_ &pipe_w);
1369		1474
1370	#if EV_USE_EVENTFD	1475	#if EV_USE_EVENTFD
1371	if (evfd >= 0)	1476	if (evfd >= 0)
1372	close (evfd);	1477	close (evfd);
1373	#endif	1478	#endif
…		…
1412	}	1517	}
1413		1518
1414	ev_free (anfds); anfdmax = 0;	1519	ev_free (anfds); anfdmax = 0;
1415		1520
1416	/* have to use the microsoft-never-gets-it-right macro */	1521	/* have to use the microsoft-never-gets-it-right macro */
		1522	array_free (rfeed, EMPTY);
1417	array_free (fdchange, EMPTY);	1523	array_free (fdchange, EMPTY);
1418	array_free (timer, EMPTY);	1524	array_free (timer, EMPTY);
1419	#if EV_PERIODIC_ENABLE	1525	#if EV_PERIODIC_ENABLE
1420	array_free (periodic, EMPTY);	1526	array_free (periodic, EMPTY);
1421	#endif	1527	#endif
…		…
1430		1536
1431	backend = 0;	1537	backend = 0;
1432	}	1538	}
1433		1539
1434	#if EV_USE_INOTIFY	1540	#if EV_USE_INOTIFY
1435	void inline_size infy_fork (EV_P);	1541	inline_size void infy_fork (EV_P);
1436	#endif	1542	#endif
1437		1543
1438	void inline_size	1544	inline_size void
1439	loop_fork (EV_P)	1545	loop_fork (EV_P)
1440	{	1546	{
1441	#if EV_USE_PORT	1547	#if EV_USE_PORT
1442	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1548	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1443	#endif	1549	#endif
…		…
1449	#endif	1555	#endif
1450	#if EV_USE_INOTIFY	1556	#if EV_USE_INOTIFY
1451	infy_fork (EV_A);	1557	infy_fork (EV_A);
1452	#endif	1558	#endif
1453		1559
1454	if (ev_is_active (&pipeev))	1560	if (ev_is_active (&pipe_w))
1455	{	1561	{
1456	/* this "locks" the handlers against writing to the pipe */	1562	/* this "locks" the handlers against writing to the pipe */
1457	/* while we modify the fd vars */	1563	/* while we modify the fd vars */
1458	gotsig = 1;	1564	gotsig = 1;
1459	#if EV_ASYNC_ENABLE	1565	#if EV_ASYNC_ENABLE
1460	gotasync = 1;	1566	gotasync = 1;
1461	#endif	1567	#endif
1462		1568
1463	ev_ref (EV_A);	1569	ev_ref (EV_A);
1464	ev_io_stop (EV_A_ &pipeev);	1570	ev_io_stop (EV_A_ &pipe_w);
1465		1571
1466	#if EV_USE_EVENTFD	1572	#if EV_USE_EVENTFD
1467	if (evfd >= 0)	1573	if (evfd >= 0)
1468	close (evfd);	1574	close (evfd);
1469	#endif	1575	#endif
…		…
1474	close (evpipe [1]);	1580	close (evpipe [1]);
1475	}	1581	}
1476		1582
1477	evpipe_init (EV_A);	1583	evpipe_init (EV_A);
1478	/* now iterate over everything, in case we missed something */	1584	/* now iterate over everything, in case we missed something */
1479	pipecb (EV_A_ &pipeev, EV_READ);	1585	pipecb (EV_A_ &pipe_w, EV_READ);
1480	}	1586	}
1481		1587
1482	postfork = 0;	1588	postfork = 0;
1483	}	1589	}
1484		1590
…		…
1511	{	1617	{
1512	postfork = 1; /* must be in line with ev_default_fork */	1618	postfork = 1; /* must be in line with ev_default_fork */
1513	}	1619	}
1514		1620
1515	#if EV_VERIFY	1621	#if EV_VERIFY
1516	void noinline	1622	static void noinline
1517	verify_watcher (EV_P_ W w)	1623	verify_watcher (EV_P_ W w)
1518	{	1624	{
1519	assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));	1625	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1520		1626
1521	if (w->pending)	1627	if (w->pending)
1522	assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));	1628	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1523	}	1629	}
1524		1630
1525	static void noinline	1631	static void noinline
1526	verify_heap (EV_P_ ANHE *heap, int N)	1632	verify_heap (EV_P_ ANHE *heap, int N)
1527	{	1633	{
1528	int i;	1634	int i;
1529		1635
1530	for (i = HEAP0; i < N + HEAP0; ++i)	1636	for (i = HEAP0; i < N + HEAP0; ++i)
1531	{	1637	{
1532	assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));	1638	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1533	assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));	1639	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1534	assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));	1640	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1535		1641
1536	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));	1642	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1537	}	1643	}
1538	}	1644	}
1539		1645
1540	static void noinline	1646	static void noinline
1541	array_verify (EV_P_ W *ws, int cnt)	1647	array_verify (EV_P_ W *ws, int cnt)
1542	{	1648	{
1543	while (cnt--)	1649	while (cnt--)
1544	{	1650	{
1545	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));	1651	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1546	verify_watcher (EV_A_ ws [cnt]);	1652	verify_watcher (EV_A_ ws [cnt]);
1547	}	1653	}
1548	}	1654	}
1549	#endif	1655	#endif
1550		1656
…		…
1557		1663
1558	assert (activecnt >= -1);	1664	assert (activecnt >= -1);
1559		1665
1560	assert (fdchangemax >= fdchangecnt);	1666	assert (fdchangemax >= fdchangecnt);
1561	for (i = 0; i < fdchangecnt; ++i)	1667	for (i = 0; i < fdchangecnt; ++i)
1562	assert (("negative fd in fdchanges", fdchanges [i] >= 0));	1668	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1563		1669
1564	assert (anfdmax >= 0);	1670	assert (anfdmax >= 0);
1565	for (i = 0; i < anfdmax; ++i)	1671	for (i = 0; i < anfdmax; ++i)
1566	for (w = anfds [i].head; w; w = w->next)	1672	for (w = anfds [i].head; w; w = w->next)
1567	{	1673	{
1568	verify_watcher (EV_A_ (W)w);	1674	verify_watcher (EV_A_ (W)w);
1569	assert (("inactive fd watcher on anfd list", ev_active (w) == 1));	1675	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1570	assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));	1676	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1571	}	1677	}
1572		1678
1573	assert (timermax >= timercnt);	1679	assert (timermax >= timercnt);
1574	verify_heap (EV_A_ timers, timercnt);	1680	verify_heap (EV_A_ timers, timercnt);
1575		1681
…		…
1652	{	1758	{
1653	#if EV_MULTIPLICITY	1759	#if EV_MULTIPLICITY
1654	struct ev_loop *loop = ev_default_loop_ptr;	1760	struct ev_loop *loop = ev_default_loop_ptr;
1655	#endif	1761	#endif
1656		1762
		1763	ev_default_loop_ptr = 0;
		1764
1657	#ifndef _WIN32	1765	#ifndef _WIN32
1658	ev_ref (EV_A); /* child watcher */	1766	ev_ref (EV_A); /* child watcher */
1659	ev_signal_stop (EV_A_ &childev);	1767	ev_signal_stop (EV_A_ &childev);
1660	#endif	1768	#endif
1661		1769
…		…
1667	{	1775	{
1668	#if EV_MULTIPLICITY	1776	#if EV_MULTIPLICITY
1669	struct ev_loop *loop = ev_default_loop_ptr;	1777	struct ev_loop *loop = ev_default_loop_ptr;
1670	#endif	1778	#endif
1671		1779
1672	if (backend)
1673	postfork = 1; /* must be in line with ev_loop_fork */	1780	postfork = 1; /* must be in line with ev_loop_fork */
1674	}	1781	}
1675		1782
1676	/*****************************************************************************/	1783	/*****************************************************************************/
1677		1784
1678	void	1785	void
1679	ev_invoke (EV_P_ void *w, int revents)	1786	ev_invoke (EV_P_ void *w, int revents)
1680	{	1787	{
1681	EV_CB_INVOKE ((W)w, revents);	1788	EV_CB_INVOKE ((W)w, revents);
1682	}	1789	}
1683		1790
1684	void inline_speed	1791	void
1685	call_pending (EV_P)	1792	ev_invoke_pending (EV_P)
1686	{	1793	{
1687	int pri;	1794	int pri;
1688		1795
1689	for (pri = NUMPRI; pri--; )	1796	for (pri = NUMPRI; pri--; )
1690	while (pendingcnt [pri])	1797	while (pendingcnt [pri])
1691	{	1798	{
1692	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1799	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1693		1800
1694	if (expect_true (p->w))
1695	{
1696	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1801	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1802	/* ^ this is no longer true, as pending_w could be here */
1697		1803
1698	p->w->pending = 0;	1804	p->w->pending = 0;
1699	EV_CB_INVOKE (p->w, p->events);	1805	EV_CB_INVOKE (p->w, p->events);
1700	EV_FREQUENT_CHECK;	1806	EV_FREQUENT_CHECK;
1701	}
1702	}	1807	}
1703	}	1808	}
1704		1809
1705	#if EV_IDLE_ENABLE	1810	#if EV_IDLE_ENABLE
1706	void inline_size	1811	/* make idle watchers pending. this handles the "call-idle */
		1812	/* only when higher priorities are idle" logic */
		1813	inline_size void
1707	idle_reify (EV_P)	1814	idle_reify (EV_P)
1708	{	1815	{
1709	if (expect_false (idleall))	1816	if (expect_false (idleall))
1710	{	1817	{
1711	int pri;	1818	int pri;
…		…
1723	}	1830	}
1724	}	1831	}
1725	}	1832	}
1726	#endif	1833	#endif
1727		1834
1728	void inline_size	1835	/* make timers pending */
		1836	inline_size void
1729	timers_reify (EV_P)	1837	timers_reify (EV_P)
1730	{	1838	{
1731	EV_FREQUENT_CHECK;	1839	EV_FREQUENT_CHECK;
1732		1840
1733	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	1841	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1734	{	1842	{
1735	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	1843	do
1736
1737	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1738
1739	/* first reschedule or stop timer */
1740	if (w->repeat)
1741	{	1844	{
		1845	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1846
		1847	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		1848
		1849	/* first reschedule or stop timer */
		1850	if (w->repeat)
		1851	{
1742	ev_at (w) += w->repeat;	1852	ev_at (w) += w->repeat;
1743	if (ev_at (w) < mn_now)	1853	if (ev_at (w) < mn_now)
1744	ev_at (w) = mn_now;	1854	ev_at (w) = mn_now;
1745		1855
1746	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1856	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1747		1857
1748	ANHE_at_cache (timers [HEAP0]);	1858	ANHE_at_cache (timers [HEAP0]);
1749	downheap (timers, timercnt, HEAP0);	1859	downheap (timers, timercnt, HEAP0);
		1860	}
		1861	else
		1862	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1863
		1864	EV_FREQUENT_CHECK;
		1865	feed_reverse (EV_A_ (W)w);
1750	}	1866	}
1751	else	1867	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1752	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1753		1868
1754	EV_FREQUENT_CHECK;
1755	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1869	feed_reverse_done (EV_A_ EV_TIMEOUT);
1756	}	1870	}
1757	}	1871	}
1758		1872
1759	#if EV_PERIODIC_ENABLE	1873	#if EV_PERIODIC_ENABLE
1760	void inline_size	1874	/* make periodics pending */
		1875	inline_size void
1761	periodics_reify (EV_P)	1876	periodics_reify (EV_P)
1762	{	1877	{
1763	EV_FREQUENT_CHECK;	1878	EV_FREQUENT_CHECK;
1764		1879
1765	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	1880	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1766	{	1881	{
1767	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	1882	int feed_count = 0;
1768		1883
1769	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	1884	do
1770
1771	/* first reschedule or stop timer */
1772	if (w->reschedule_cb)
1773	{	1885	{
		1886	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1887
		1888	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		1889
		1890	/* first reschedule or stop timer */
		1891	if (w->reschedule_cb)
		1892	{
1774	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1893	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1775		1894
1776	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));	1895	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1777		1896
1778	ANHE_at_cache (periodics [HEAP0]);	1897	ANHE_at_cache (periodics [HEAP0]);
1779	downheap (periodics, periodiccnt, HEAP0);	1898	downheap (periodics, periodiccnt, HEAP0);
		1899	}
		1900	else if (w->interval)
		1901	{
		1902	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1903	/* if next trigger time is not sufficiently in the future, put it there */
		1904	/* this might happen because of floating point inexactness */
		1905	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1906	{
		1907	ev_at (w) += w->interval;
		1908
		1909	/* if interval is unreasonably low we might still have a time in the past */
		1910	/* so correct this. this will make the periodic very inexact, but the user */
		1911	/* has effectively asked to get triggered more often than possible */
		1912	if (ev_at (w) < ev_rt_now)
		1913	ev_at (w) = ev_rt_now;
		1914	}
		1915
		1916	ANHE_at_cache (periodics [HEAP0]);
		1917	downheap (periodics, periodiccnt, HEAP0);
		1918	}
		1919	else
		1920	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1921
		1922	EV_FREQUENT_CHECK;
		1923	feed_reverse (EV_A_ (W)w);
1780	}	1924	}
1781	else if (w->interval)	1925	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1782	{
1783	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1784	/* if next trigger time is not sufficiently in the future, put it there */
1785	/* this might happen because of floating point inexactness */
1786	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1787	{
1788	ev_at (w) += w->interval;
1789		1926
1790	/* if interval is unreasonably low we might still have a time in the past */
1791	/* so correct this. this will make the periodic very inexact, but the user */
1792	/* has effectively asked to get triggered more often than possible */
1793	if (ev_at (w) < ev_rt_now)
1794	ev_at (w) = ev_rt_now;
1795	}
1796
1797	ANHE_at_cache (periodics [HEAP0]);
1798	downheap (periodics, periodiccnt, HEAP0);
1799	}
1800	else
1801	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1802
1803	EV_FREQUENT_CHECK;
1804	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1927	feed_reverse_done (EV_A_ EV_PERIODIC);
1805	}	1928	}
1806	}	1929	}
1807		1930
		1931	/* simply recalculate all periodics */
		1932	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1808	static void noinline	1933	static void noinline
1809	periodics_reschedule (EV_P)	1934	periodics_reschedule (EV_P)
1810	{	1935	{
1811	int i;	1936	int i;
1812		1937
…		…
1825		1950
1826	reheap (periodics, periodiccnt);	1951	reheap (periodics, periodiccnt);
1827	}	1952	}
1828	#endif	1953	#endif
1829		1954
1830	void inline_speed	1955	/* adjust all timers by a given offset */
		1956	static void noinline
		1957	timers_reschedule (EV_P_ ev_tstamp adjust)
		1958	{
		1959	int i;
		1960
		1961	for (i = 0; i < timercnt; ++i)
		1962	{
		1963	ANHE *he = timers + i + HEAP0;
		1964	ANHE_w (*he)->at += adjust;
		1965	ANHE_at_cache (*he);
		1966	}
		1967	}
		1968
		1969	/* fetch new monotonic and realtime times from the kernel */
		1970	/* also detetc if there was a timejump, and act accordingly */
		1971	inline_speed void
1831	time_update (EV_P_ ev_tstamp max_block)	1972	time_update (EV_P_ ev_tstamp max_block)
1832	{	1973	{
1833	int i;
1834
1835	#if EV_USE_MONOTONIC	1974	#if EV_USE_MONOTONIC
1836	if (expect_true (have_monotonic))	1975	if (expect_true (have_monotonic))
1837	{	1976	{
		1977	int i;
1838	ev_tstamp odiff = rtmn_diff;	1978	ev_tstamp odiff = rtmn_diff;
1839		1979
1840	mn_now = get_clock ();	1980	mn_now = get_clock ();
1841		1981
1842	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	1982	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1868	ev_rt_now = ev_time ();	2008	ev_rt_now = ev_time ();
1869	mn_now = get_clock ();	2009	mn_now = get_clock ();
1870	now_floor = mn_now;	2010	now_floor = mn_now;
1871	}	2011	}
1872		2012
		2013	/* no timer adjustment, as the monotonic clock doesn't jump */
		2014	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1873	# if EV_PERIODIC_ENABLE	2015	# if EV_PERIODIC_ENABLE
1874	periodics_reschedule (EV_A);	2016	periodics_reschedule (EV_A);
1875	# endif	2017	# endif
1876	/* no timer adjustment, as the monotonic clock doesn't jump */
1877	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1878	}	2018	}
1879	else	2019	else
1880	#endif	2020	#endif
1881	{	2021	{
1882	ev_rt_now = ev_time ();	2022	ev_rt_now = ev_time ();
1883		2023
1884	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2024	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1885	{	2025	{
		2026	/* adjust timers. this is easy, as the offset is the same for all of them */
		2027	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1886	#if EV_PERIODIC_ENABLE	2028	#if EV_PERIODIC_ENABLE
1887	periodics_reschedule (EV_A);	2029	periodics_reschedule (EV_A);
1888	#endif	2030	#endif
1889	/* adjust timers. this is easy, as the offset is the same for all of them */
1890	for (i = 0; i < timercnt; ++i)
1891	{
1892	ANHE *he = timers + i + HEAP0;
1893	ANHE_w (*he)->at += ev_rt_now - mn_now;
1894	ANHE_at_cache (*he);
1895	}
1896	}	2031	}
1897		2032
1898	mn_now = ev_rt_now;	2033	mn_now = ev_rt_now;
1899	}	2034	}
1900	}	2035	}
1901		2036
1902	void	2037	void
1903	ev_ref (EV_P)
1904	{
1905	++activecnt;
1906	}
1907
1908	void
1909	ev_unref (EV_P)
1910	{
1911	--activecnt;
1912	}
1913
1914	static int loop_done;
1915
1916	void
1917	ev_loop (EV_P_ int flags)	2038	ev_loop (EV_P_ int flags)
1918	{	2039	{
		2040	++loop_depth;
		2041
1919	loop_done = EVUNLOOP_CANCEL;	2042	loop_done = EVUNLOOP_CANCEL;
1920		2043
1921	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2044	invoke_cb (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1922		2045
1923	do	2046	do
1924	{	2047	{
1925	#if EV_VERIFY >= 2	2048	#if EV_VERIFY >= 2
1926	ev_loop_verify (EV_A);	2049	ev_loop_verify (EV_A);
…		…
1939	/* we might have forked, so queue fork handlers */	2062	/* we might have forked, so queue fork handlers */
1940	if (expect_false (postfork))	2063	if (expect_false (postfork))
1941	if (forkcnt)	2064	if (forkcnt)
1942	{	2065	{
1943	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2066	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1944	call_pending (EV_A);	2067	invoke_cb (EV_A);
1945	}	2068	}
1946	#endif	2069	#endif
1947		2070
1948	/* queue prepare watchers (and execute them) */	2071	/* queue prepare watchers (and execute them) */
1949	if (expect_false (preparecnt))	2072	if (expect_false (preparecnt))
1950	{	2073	{
1951	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2074	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1952	call_pending (EV_A);	2075	invoke_cb (EV_A);
1953	}	2076	}
1954
1955	if (expect_false (!activecnt))
1956	break;
1957		2077
1958	/* we might have forked, so reify kernel state if necessary */	2078	/* we might have forked, so reify kernel state if necessary */
1959	if (expect_false (postfork))	2079	if (expect_false (postfork))
1960	loop_fork (EV_A);	2080	loop_fork (EV_A);
1961		2081
…		…
1967	ev_tstamp waittime = 0.;	2087	ev_tstamp waittime = 0.;
1968	ev_tstamp sleeptime = 0.;	2088	ev_tstamp sleeptime = 0.;
1969		2089
1970	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2090	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1971	{	2091	{
		2092	/* remember old timestamp for io_blocktime calculation */
		2093	ev_tstamp prev_mn_now = mn_now;
		2094
1972	/* update time to cancel out callback processing overhead */	2095	/* update time to cancel out callback processing overhead */
1973	time_update (EV_A_ 1e100);	2096	time_update (EV_A_ 1e100);
1974		2097
1975	waittime = MAX_BLOCKTIME;	2098	waittime = MAX_BLOCKTIME;
1976		2099
…		…
1986	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2109	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1987	if (waittime > to) waittime = to;	2110	if (waittime > to) waittime = to;
1988	}	2111	}
1989	#endif	2112	#endif
1990		2113
		2114	/* don't let timeouts decrease the waittime below timeout_blocktime */
1991	if (expect_false (waittime < timeout_blocktime))	2115	if (expect_false (waittime < timeout_blocktime))
1992	waittime = timeout_blocktime;	2116	waittime = timeout_blocktime;
1993		2117
1994	sleeptime = waittime - backend_fudge;	2118	/* extra check because io_blocktime is commonly 0 */
1995
1996	if (expect_true (sleeptime > io_blocktime))	2119	if (expect_false (io_blocktime))
1997	sleeptime = io_blocktime;
1998
1999	if (sleeptime)
2000	{	2120	{
		2121	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2122
		2123	if (sleeptime > waittime - backend_fudge)
		2124	sleeptime = waittime - backend_fudge;
		2125
		2126	if (expect_true (sleeptime > 0.))
		2127	{
2001	ev_sleep (sleeptime);	2128	ev_sleep (sleeptime);
2002	waittime -= sleeptime;	2129	waittime -= sleeptime;
		2130	}
2003	}	2131	}
2004	}	2132	}
2005		2133
2006	++loop_count;	2134	++loop_count;
2007	backend_poll (EV_A_ waittime);	2135	backend_poll (EV_A_ waittime);
…		…
2023		2151
2024	/* queue check watchers, to be executed first */	2152	/* queue check watchers, to be executed first */
2025	if (expect_false (checkcnt))	2153	if (expect_false (checkcnt))
2026	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2154	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2027		2155
2028	call_pending (EV_A);	2156	invoke_cb (EV_A);
2029	}	2157	}
2030	while (expect_true (	2158	while (expect_true (
2031	activecnt	2159	activecnt
2032	&& !loop_done	2160	&& !loop_done
2033	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2161	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2034	));	2162	));
2035		2163
2036	if (loop_done == EVUNLOOP_ONE)	2164	if (loop_done == EVUNLOOP_ONE)
2037	loop_done = EVUNLOOP_CANCEL;	2165	loop_done = EVUNLOOP_CANCEL;
		2166
		2167	--loop_depth;
2038	}	2168	}
2039		2169
2040	void	2170	void
2041	ev_unloop (EV_P_ int how)	2171	ev_unloop (EV_P_ int how)
2042	{	2172	{
2043	loop_done = how;	2173	loop_done = how;
2044	}	2174	}
2045		2175
		2176	void
		2177	ev_ref (EV_P)
		2178	{
		2179	++activecnt;
		2180	}
		2181
		2182	void
		2183	ev_unref (EV_P)
		2184	{
		2185	--activecnt;
		2186	}
		2187
		2188	void
		2189	ev_now_update (EV_P)
		2190	{
		2191	time_update (EV_A_ 1e100);
		2192	}
		2193
		2194	void
		2195	ev_suspend (EV_P)
		2196	{
		2197	ev_now_update (EV_A);
		2198	}
		2199
		2200	void
		2201	ev_resume (EV_P)
		2202	{
		2203	ev_tstamp mn_prev = mn_now;
		2204
		2205	ev_now_update (EV_A);
		2206	timers_reschedule (EV_A_ mn_now - mn_prev);
		2207	#if EV_PERIODIC_ENABLE
		2208	/* TODO: really do this? */
		2209	periodics_reschedule (EV_A);
		2210	#endif
		2211	}
		2212
2046	/*****************************************************************************/	2213	/*****************************************************************************/
		2214	/* singly-linked list management, used when the expected list length is short */
2047		2215
2048	void inline_size	2216	inline_size void
2049	wlist_add (WL *head, WL elem)	2217	wlist_add (WL *head, WL elem)
2050	{	2218	{
2051	elem->next = *head;	2219	elem->next = *head;
2052	*head = elem;	2220	*head = elem;
2053	}	2221	}
2054		2222
2055	void inline_size	2223	inline_size void
2056	wlist_del (WL *head, WL elem)	2224	wlist_del (WL *head, WL elem)
2057	{	2225	{
2058	while (*head)	2226	while (*head)
2059	{	2227	{
2060	if (*head == elem)	2228	if (*head == elem)
…		…
2065		2233
2066	head = &(*head)->next;	2234	head = &(*head)->next;
2067	}	2235	}
2068	}	2236	}
2069		2237
2070	void inline_speed	2238	/* internal, faster, version of ev_clear_pending */
		2239	inline_speed void
2071	clear_pending (EV_P_ W w)	2240	clear_pending (EV_P_ W w)
2072	{	2241	{
2073	if (w->pending)	2242	if (w->pending)
2074	{	2243	{
2075	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2244	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2076	w->pending = 0;	2245	w->pending = 0;
2077	}	2246	}
2078	}	2247	}
2079		2248
2080	int	2249	int
…		…
2084	int pending = w_->pending;	2253	int pending = w_->pending;
2085		2254
2086	if (expect_true (pending))	2255	if (expect_true (pending))
2087	{	2256	{
2088	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2257	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2258	p->w = (W)&pending_w;
2089	w_->pending = 0;	2259	w_->pending = 0;
2090	p->w = 0;
2091	return p->events;	2260	return p->events;
2092	}	2261	}
2093	else	2262	else
2094	return 0;	2263	return 0;
2095	}	2264	}
2096		2265
2097	void inline_size	2266	inline_size void
2098	pri_adjust (EV_P_ W w)	2267	pri_adjust (EV_P_ W w)
2099	{	2268	{
2100	int pri = w->priority;	2269	int pri = ev_priority (w);
2101	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2270	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2102	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2271	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2103	w->priority = pri;	2272	ev_set_priority (w, pri);
2104	}	2273	}
2105		2274
2106	void inline_speed	2275	inline_speed void
2107	ev_start (EV_P_ W w, int active)	2276	ev_start (EV_P_ W w, int active)
2108	{	2277	{
2109	pri_adjust (EV_A_ w);	2278	pri_adjust (EV_A_ w);
2110	w->active = active;	2279	w->active = active;
2111	ev_ref (EV_A);	2280	ev_ref (EV_A);
2112	}	2281	}
2113		2282
2114	void inline_size	2283	inline_size void
2115	ev_stop (EV_P_ W w)	2284	ev_stop (EV_P_ W w)
2116	{	2285	{
2117	ev_unref (EV_A);	2286	ev_unref (EV_A);
2118	w->active = 0;	2287	w->active = 0;
2119	}	2288	}
…		…
2126	int fd = w->fd;	2295	int fd = w->fd;
2127		2296
2128	if (expect_false (ev_is_active (w)))	2297	if (expect_false (ev_is_active (w)))
2129	return;	2298	return;
2130		2299
2131	assert (("ev_io_start called with negative fd", fd >= 0));	2300	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2301	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2132		2302
2133	EV_FREQUENT_CHECK;	2303	EV_FREQUENT_CHECK;
2134		2304
2135	ev_start (EV_A_ (W)w, 1);	2305	ev_start (EV_A_ (W)w, 1);
2136	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2306	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2137	wlist_add (&anfds[fd].head, (WL)w);	2307	wlist_add (&anfds[fd].head, (WL)w);
2138		2308
2139	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2309	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
2140	w->events &= ~EV_IOFDSET;	2310	w->events &= ~EV__IOFDSET;
2141		2311
2142	EV_FREQUENT_CHECK;	2312	EV_FREQUENT_CHECK;
2143	}	2313	}
2144		2314
2145	void noinline	2315	void noinline
…		…
2147	{	2317	{
2148	clear_pending (EV_A_ (W)w);	2318	clear_pending (EV_A_ (W)w);
2149	if (expect_false (!ev_is_active (w)))	2319	if (expect_false (!ev_is_active (w)))
2150	return;	2320	return;
2151		2321
2152	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2322	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2153		2323
2154	EV_FREQUENT_CHECK;	2324	EV_FREQUENT_CHECK;
2155		2325
2156	wlist_del (&anfds[w->fd].head, (WL)w);	2326	wlist_del (&anfds[w->fd].head, (WL)w);
2157	ev_stop (EV_A_ (W)w);	2327	ev_stop (EV_A_ (W)w);
…		…
2167	if (expect_false (ev_is_active (w)))	2337	if (expect_false (ev_is_active (w)))
2168	return;	2338	return;
2169		2339
2170	ev_at (w) += mn_now;	2340	ev_at (w) += mn_now;
2171		2341
2172	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2342	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2173		2343
2174	EV_FREQUENT_CHECK;	2344	EV_FREQUENT_CHECK;
2175		2345
2176	++timercnt;	2346	++timercnt;
2177	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);	2347	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
…		…
2180	ANHE_at_cache (timers [ev_active (w)]);	2350	ANHE_at_cache (timers [ev_active (w)]);
2181	upheap (timers, ev_active (w));	2351	upheap (timers, ev_active (w));
2182		2352
2183	EV_FREQUENT_CHECK;	2353	EV_FREQUENT_CHECK;
2184		2354
2185	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2355	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2186	}	2356	}
2187		2357
2188	void noinline	2358	void noinline
2189	ev_timer_stop (EV_P_ ev_timer *w)	2359	ev_timer_stop (EV_P_ ev_timer *w)
2190	{	2360	{
…		…
2195	EV_FREQUENT_CHECK;	2365	EV_FREQUENT_CHECK;
2196		2366
2197	{	2367	{
2198	int active = ev_active (w);	2368	int active = ev_active (w);
2199		2369
2200	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2370	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2201		2371
2202	--timercnt;	2372	--timercnt;
2203		2373
2204	if (expect_true (active < timercnt + HEAP0))	2374	if (expect_true (active < timercnt + HEAP0))
2205	{	2375	{
…		…
2249		2419
2250	if (w->reschedule_cb)	2420	if (w->reschedule_cb)
2251	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2421	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2252	else if (w->interval)	2422	else if (w->interval)
2253	{	2423	{
2254	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2424	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2255	/* this formula differs from the one in periodic_reify because we do not always round up */	2425	/* this formula differs from the one in periodic_reify because we do not always round up */
2256	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2426	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2257	}	2427	}
2258	else	2428	else
2259	ev_at (w) = w->offset;	2429	ev_at (w) = w->offset;
…		…
2267	ANHE_at_cache (periodics [ev_active (w)]);	2437	ANHE_at_cache (periodics [ev_active (w)]);
2268	upheap (periodics, ev_active (w));	2438	upheap (periodics, ev_active (w));
2269		2439
2270	EV_FREQUENT_CHECK;	2440	EV_FREQUENT_CHECK;
2271		2441
2272	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2442	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2273	}	2443	}
2274		2444
2275	void noinline	2445	void noinline
2276	ev_periodic_stop (EV_P_ ev_periodic *w)	2446	ev_periodic_stop (EV_P_ ev_periodic *w)
2277	{	2447	{
…		…
2282	EV_FREQUENT_CHECK;	2452	EV_FREQUENT_CHECK;
2283		2453
2284	{	2454	{
2285	int active = ev_active (w);	2455	int active = ev_active (w);
2286		2456
2287	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2457	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2288		2458
2289	--periodiccnt;	2459	--periodiccnt;
2290		2460
2291	if (expect_true (active < periodiccnt + HEAP0))	2461	if (expect_true (active < periodiccnt + HEAP0))
2292	{	2462	{
…		…
2315		2485
2316	void noinline	2486	void noinline
2317	ev_signal_start (EV_P_ ev_signal *w)	2487	ev_signal_start (EV_P_ ev_signal *w)
2318	{	2488	{
2319	#if EV_MULTIPLICITY	2489	#if EV_MULTIPLICITY
2320	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2490	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2321	#endif	2491	#endif
2322	if (expect_false (ev_is_active (w)))	2492	if (expect_false (ev_is_active (w)))
2323	return;	2493	return;
2324		2494
2325	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2495	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2326		2496
2327	evpipe_init (EV_A);	2497	evpipe_init (EV_A);
2328		2498
2329	EV_FREQUENT_CHECK;	2499	EV_FREQUENT_CHECK;
2330		2500
…		…
2333	sigset_t full, prev;	2503	sigset_t full, prev;
2334	sigfillset (&full);	2504	sigfillset (&full);
2335	sigprocmask (SIG_SETMASK, &full, &prev);	2505	sigprocmask (SIG_SETMASK, &full, &prev);
2336	#endif	2506	#endif
2337		2507
2338	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2508	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2339		2509
2340	#ifndef _WIN32	2510	#ifndef _WIN32
2341	sigprocmask (SIG_SETMASK, &prev, 0);	2511	sigprocmask (SIG_SETMASK, &prev, 0);
2342	#endif	2512	#endif
2343	}	2513	}
…		…
2381		2551
2382	void	2552	void
2383	ev_child_start (EV_P_ ev_child *w)	2553	ev_child_start (EV_P_ ev_child *w)
2384	{	2554	{
2385	#if EV_MULTIPLICITY	2555	#if EV_MULTIPLICITY
2386	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2556	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2387	#endif	2557	#endif
2388	if (expect_false (ev_is_active (w)))	2558	if (expect_false (ev_is_active (w)))
2389	return;	2559	return;
2390		2560
2391	EV_FREQUENT_CHECK;	2561	EV_FREQUENT_CHECK;
…		…
2416	# ifdef _WIN32	2586	# ifdef _WIN32
2417	# undef lstat	2587	# undef lstat
2418	# define lstat(a,b) _stati64 (a,b)	2588	# define lstat(a,b) _stati64 (a,b)
2419	# endif	2589	# endif
2420		2590
2421	#define DEF_STAT_INTERVAL 5.0074891	2591	#define DEF_STAT_INTERVAL 5.0074891
		2592	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2422	#define MIN_STAT_INTERVAL 0.1074891	2593	#define MIN_STAT_INTERVAL 0.1074891
2423		2594
2424	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2595	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2425		2596
2426	#if EV_USE_INOTIFY	2597	#if EV_USE_INOTIFY
2427	# define EV_INOTIFY_BUFSIZE 8192	2598	# define EV_INOTIFY_BUFSIZE 8192
…		…
2431	{	2602	{
2432	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);	2603	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2433		2604
2434	if (w->wd < 0)	2605	if (w->wd < 0)
2435	{	2606	{
		2607	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2436	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2608	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2437		2609
2438	/* monitor some parent directory for speedup hints */	2610	/* monitor some parent directory for speedup hints */
2439	/* note that exceeding the hardcoded limit is not a correctness issue, */	2611	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2440	/* but an efficiency issue only */	2612	/* but an efficiency issue only */
2441	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2613	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2442	{	2614	{
2443	char path [4096];	2615	char path [4096];
2444	strcpy (path, w->path);	2616	strcpy (path, w->path);
…		…
2448	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2620	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2449	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2621	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2450		2622
2451	char *pend = strrchr (path, '/');	2623	char *pend = strrchr (path, '/');
2452		2624
2453	if (!pend)	2625	if (!pend || pend == path)
2454	break; /* whoops, no '/', complain to your admin */	2626	break;
2455		2627
2456	*pend = 0;	2628	*pend = 0;
2457	w->wd = inotify_add_watch (fs_fd, path, mask);	2629	w->wd = inotify_add_watch (fs_fd, path, mask);
2458	}	2630	}
2459	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2631	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2460	}	2632	}
2461	}	2633	}
2462	else
2463	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2464		2634
2465	if (w->wd >= 0)	2635	if (w->wd >= 0)
		2636	{
2466	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2637	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2638
		2639	/* now local changes will be tracked by inotify, but remote changes won't */
		2640	/* unless the filesystem it known to be local, we therefore still poll */
		2641	/* also do poll on <2.6.25, but with normal frequency */
		2642	struct statfs sfs;
		2643
		2644	if (fs_2625 && !statfs (w->path, &sfs))
		2645	if (sfs.f_type == 0x1373 /* devfs */
		2646	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2647	|| sfs.f_type == 0x3153464a /* jfs */
		2648	|| sfs.f_type == 0x52654973 /* reiser3 */
		2649	|| sfs.f_type == 0x01021994 /* tempfs */
		2650	|| sfs.f_type == 0x58465342 /* xfs */)
		2651	return;
		2652
		2653	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2654	ev_timer_again (EV_A_ &w->timer);
		2655	}
2467	}	2656	}
2468		2657
2469	static void noinline	2658	static void noinline
2470	infy_del (EV_P_ ev_stat *w)	2659	infy_del (EV_P_ ev_stat *w)
2471	{	2660	{
…		…
2485		2674
2486	static void noinline	2675	static void noinline
2487	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2676	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2488	{	2677	{
2489	if (slot < 0)	2678	if (slot < 0)
2490	/* overflow, need to check for all hahs slots */	2679	/* overflow, need to check for all hash slots */
2491	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2680	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2492	infy_wd (EV_A_ slot, wd, ev);	2681	infy_wd (EV_A_ slot, wd, ev);
2493	else	2682	else
2494	{	2683	{
2495	WL w_;	2684	WL w_;
…		…
2501		2690
2502	if (w->wd == wd || wd == -1)	2691	if (w->wd == wd || wd == -1)
2503	{	2692	{
2504	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2693	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2505	{	2694	{
		2695	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2506	w->wd = -1;	2696	w->wd = -1;
2507	infy_add (EV_A_ w); /* re-add, no matter what */	2697	infy_add (EV_A_ w); /* re-add, no matter what */
2508	}	2698	}
2509		2699
2510	stat_timer_cb (EV_A_ &w->timer, 0);	2700	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2523		2713
2524	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2714	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2525	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2715	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2526	}	2716	}
2527		2717
2528	void inline_size	2718	inline_size void
		2719	check_2625 (EV_P)
		2720	{
		2721	/* kernels < 2.6.25 are borked
		2722	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2723	*/
		2724	struct utsname buf;
		2725	int major, minor, micro;
		2726
		2727	if (uname (&buf))
		2728	return;
		2729
		2730	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2731	return;
		2732
		2733	if (major < 2
		2734	|| (major == 2 && minor < 6)
		2735	|| (major == 2 && minor == 6 && micro < 25))
		2736	return;
		2737
		2738	fs_2625 = 1;
		2739	}
		2740
		2741	inline_size void
2529	infy_init (EV_P)	2742	infy_init (EV_P)
2530	{	2743	{
2531	if (fs_fd != -2)	2744	if (fs_fd != -2)
2532	return;	2745	return;
		2746
		2747	fs_fd = -1;
		2748
		2749	check_2625 (EV_A);
2533		2750
2534	fs_fd = inotify_init ();	2751	fs_fd = inotify_init ();
2535		2752
2536	if (fs_fd >= 0)	2753	if (fs_fd >= 0)
2537	{	2754	{
…		…
2539	ev_set_priority (&fs_w, EV_MAXPRI);	2756	ev_set_priority (&fs_w, EV_MAXPRI);
2540	ev_io_start (EV_A_ &fs_w);	2757	ev_io_start (EV_A_ &fs_w);
2541	}	2758	}
2542	}	2759	}
2543		2760
2544	void inline_size	2761	inline_size void
2545	infy_fork (EV_P)	2762	infy_fork (EV_P)
2546	{	2763	{
2547	int slot;	2764	int slot;
2548		2765
2549	if (fs_fd < 0)	2766	if (fs_fd < 0)
…		…
2565	w->wd = -1;	2782	w->wd = -1;
2566		2783
2567	if (fs_fd >= 0)	2784	if (fs_fd >= 0)
2568	infy_add (EV_A_ w); /* re-add, no matter what */	2785	infy_add (EV_A_ w); /* re-add, no matter what */
2569	else	2786	else
2570	ev_timer_start (EV_A_ &w->timer);	2787	ev_timer_again (EV_A_ &w->timer);
2571	}	2788	}
2572
2573	}	2789	}
2574	}	2790	}
2575		2791
2576	#endif	2792	#endif
2577		2793
…		…
2613	|| w->prev.st_atime != w->attr.st_atime	2829	|| w->prev.st_atime != w->attr.st_atime
2614	|| w->prev.st_mtime != w->attr.st_mtime	2830	|| w->prev.st_mtime != w->attr.st_mtime
2615	|| w->prev.st_ctime != w->attr.st_ctime	2831	|| w->prev.st_ctime != w->attr.st_ctime
2616	) {	2832	) {
2617	#if EV_USE_INOTIFY	2833	#if EV_USE_INOTIFY
		2834	if (fs_fd >= 0)
		2835	{
2618	infy_del (EV_A_ w);	2836	infy_del (EV_A_ w);
2619	infy_add (EV_A_ w);	2837	infy_add (EV_A_ w);
2620	ev_stat_stat (EV_A_ w); /* avoid race... */	2838	ev_stat_stat (EV_A_ w); /* avoid race... */
		2839	}
2621	#endif	2840	#endif
2622		2841
2623	ev_feed_event (EV_A_ w, EV_STAT);	2842	ev_feed_event (EV_A_ w, EV_STAT);
2624	}	2843	}
2625	}	2844	}
…		…
2628	ev_stat_start (EV_P_ ev_stat *w)	2847	ev_stat_start (EV_P_ ev_stat *w)
2629	{	2848	{
2630	if (expect_false (ev_is_active (w)))	2849	if (expect_false (ev_is_active (w)))
2631	return;	2850	return;
2632		2851
2633	/* since we use memcmp, we need to clear any padding data etc. */
2634	memset (&w->prev, 0, sizeof (ev_statdata));
2635	memset (&w->attr, 0, sizeof (ev_statdata));
2636
2637	ev_stat_stat (EV_A_ w);	2852	ev_stat_stat (EV_A_ w);
2638		2853
		2854	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2639	if (w->interval < MIN_STAT_INTERVAL)	2855	w->interval = MIN_STAT_INTERVAL;
2640	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2641		2856
2642	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2857	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2643	ev_set_priority (&w->timer, ev_priority (w));	2858	ev_set_priority (&w->timer, ev_priority (w));
2644		2859
2645	#if EV_USE_INOTIFY	2860	#if EV_USE_INOTIFY
2646	infy_init (EV_A);	2861	infy_init (EV_A);
2647		2862
2648	if (fs_fd >= 0)	2863	if (fs_fd >= 0)
2649	infy_add (EV_A_ w);	2864	infy_add (EV_A_ w);
2650	else	2865	else
2651	#endif	2866	#endif
2652	ev_timer_start (EV_A_ &w->timer);	2867	ev_timer_again (EV_A_ &w->timer);
2653		2868
2654	ev_start (EV_A_ (W)w, 1);	2869	ev_start (EV_A_ (W)w, 1);
2655		2870
2656	EV_FREQUENT_CHECK;	2871	EV_FREQUENT_CHECK;
2657	}	2872	}
…		…
2827	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3042	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2828	}	3043	}
2829	}	3044	}
2830	}	3045	}
2831		3046
		3047	static void
		3048	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3049	{
		3050	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3051
		3052	ev_embed_stop (EV_A_ w);
		3053
		3054	{
		3055	struct ev_loop *loop = w->other;
		3056
		3057	ev_loop_fork (EV_A);
		3058	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3059	}
		3060
		3061	ev_embed_start (EV_A_ w);
		3062	}
		3063
2832	#if 0	3064	#if 0
2833	static void	3065	static void
2834	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3066	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2835	{	3067	{
2836	ev_idle_stop (EV_A_ idle);	3068	ev_idle_stop (EV_A_ idle);
…		…
2843	if (expect_false (ev_is_active (w)))	3075	if (expect_false (ev_is_active (w)))
2844	return;	3076	return;
2845		3077
2846	{	3078	{
2847	struct ev_loop *loop = w->other;	3079	struct ev_loop *loop = w->other;
2848	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3080	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2849	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3081	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2850	}	3082	}
2851		3083
2852	EV_FREQUENT_CHECK;	3084	EV_FREQUENT_CHECK;
2853		3085
…		…
2856		3088
2857	ev_prepare_init (&w->prepare, embed_prepare_cb);	3089	ev_prepare_init (&w->prepare, embed_prepare_cb);
2858	ev_set_priority (&w->prepare, EV_MINPRI);	3090	ev_set_priority (&w->prepare, EV_MINPRI);
2859	ev_prepare_start (EV_A_ &w->prepare);	3091	ev_prepare_start (EV_A_ &w->prepare);
2860		3092
		3093	ev_fork_init (&w->fork, embed_fork_cb);
		3094	ev_fork_start (EV_A_ &w->fork);
		3095
2861	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3096	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2862		3097
2863	ev_start (EV_A_ (W)w, 1);	3098	ev_start (EV_A_ (W)w, 1);
2864		3099
2865	EV_FREQUENT_CHECK;	3100	EV_FREQUENT_CHECK;
…		…
2872	if (expect_false (!ev_is_active (w)))	3107	if (expect_false (!ev_is_active (w)))
2873	return;	3108	return;
2874		3109
2875	EV_FREQUENT_CHECK;	3110	EV_FREQUENT_CHECK;
2876		3111
2877	ev_io_stop (EV_A_ &w->io);	3112	ev_io_stop (EV_A_ &w->io);
2878	ev_prepare_stop (EV_A_ &w->prepare);	3113	ev_prepare_stop (EV_A_ &w->prepare);
2879		3114	ev_fork_stop (EV_A_ &w->fork);
2880	ev_stop (EV_A_ (W)w);
2881		3115
2882	EV_FREQUENT_CHECK;	3116	EV_FREQUENT_CHECK;
2883	}	3117	}
2884	#endif	3118	#endif
2885		3119
…		…
2982	once_cb (EV_P_ struct ev_once *once, int revents)	3216	once_cb (EV_P_ struct ev_once *once, int revents)
2983	{	3217	{
2984	void (*cb)(int revents, void *arg) = once->cb;	3218	void (*cb)(int revents, void *arg) = once->cb;
2985	void *arg = once->arg;	3219	void *arg = once->arg;
2986		3220
2987	ev_io_stop (EV_A_ &once->io);	3221	ev_io_stop (EV_A_ &once->io);
2988	ev_timer_stop (EV_A_ &once->to);	3222	ev_timer_stop (EV_A_ &once->to);
2989	ev_free (once);	3223	ev_free (once);
2990		3224
2991	cb (revents, arg);	3225	cb (revents, arg);
2992	}	3226	}
2993		3227
2994	static void	3228	static void
2995	once_cb_io (EV_P_ ev_io *w, int revents)	3229	once_cb_io (EV_P_ ev_io *w, int revents)
2996	{	3230	{
2997	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3231	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3232
		3233	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2998	}	3234	}
2999		3235
3000	static void	3236	static void
3001	once_cb_to (EV_P_ ev_timer *w, int revents)	3237	once_cb_to (EV_P_ ev_timer *w, int revents)
3002	{	3238	{
3003	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3239	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3240
		3241	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3004	}	3242	}
3005		3243
3006	void	3244	void
3007	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3245	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
3008	{	3246	{
…		…
3030	ev_timer_set (&once->to, timeout, 0.);	3268	ev_timer_set (&once->to, timeout, 0.);
3031	ev_timer_start (EV_A_ &once->to);	3269	ev_timer_start (EV_A_ &once->to);
3032	}	3270	}
3033	}	3271	}
3034		3272
		3273	/*****************************************************************************/
		3274
		3275	#if EV_WALK_ENABLE
		3276	void
		3277	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3278	{
		3279	int i, j;
		3280	ev_watcher_list *wl, *wn;
		3281
		3282	if (types & (EV_IO | EV_EMBED))
		3283	for (i = 0; i < anfdmax; ++i)
		3284	for (wl = anfds [i].head; wl; )
		3285	{
		3286	wn = wl->next;
		3287
		3288	#if EV_EMBED_ENABLE
		3289	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3290	{
		3291	if (types & EV_EMBED)
		3292	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3293	}
		3294	else
		3295	#endif
		3296	#if EV_USE_INOTIFY
		3297	if (ev_cb ((ev_io *)wl) == infy_cb)
		3298	;
		3299	else
		3300	#endif
		3301	if ((ev_io *)wl != &pipe_w)
		3302	if (types & EV_IO)
		3303	cb (EV_A_ EV_IO, wl);
		3304
		3305	wl = wn;
		3306	}
		3307
		3308	if (types & (EV_TIMER | EV_STAT))
		3309	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3310	#if EV_STAT_ENABLE
		3311	/*TODO: timer is not always active*/
		3312	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3313	{
		3314	if (types & EV_STAT)
		3315	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3316	}
		3317	else
		3318	#endif
		3319	if (types & EV_TIMER)
		3320	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3321
		3322	#if EV_PERIODIC_ENABLE
		3323	if (types & EV_PERIODIC)
		3324	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3325	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3326	#endif
		3327
		3328	#if EV_IDLE_ENABLE
		3329	if (types & EV_IDLE)
		3330	for (j = NUMPRI; i--; )
		3331	for (i = idlecnt [j]; i--; )
		3332	cb (EV_A_ EV_IDLE, idles [j][i]);
		3333	#endif
		3334
		3335	#if EV_FORK_ENABLE
		3336	if (types & EV_FORK)
		3337	for (i = forkcnt; i--; )
		3338	if (ev_cb (forks [i]) != embed_fork_cb)
		3339	cb (EV_A_ EV_FORK, forks [i]);
		3340	#endif
		3341
		3342	#if EV_ASYNC_ENABLE
		3343	if (types & EV_ASYNC)
		3344	for (i = asynccnt; i--; )
		3345	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3346	#endif
		3347
		3348	if (types & EV_PREPARE)
		3349	for (i = preparecnt; i--; )
		3350	#if EV_EMBED_ENABLE
		3351	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3352	#endif
		3353	cb (EV_A_ EV_PREPARE, prepares [i]);
		3354
		3355	if (types & EV_CHECK)
		3356	for (i = checkcnt; i--; )
		3357	cb (EV_A_ EV_CHECK, checks [i]);
		3358
		3359	if (types & EV_SIGNAL)
		3360	for (i = 0; i < signalmax; ++i)
		3361	for (wl = signals [i].head; wl; )
		3362	{
		3363	wn = wl->next;
		3364	cb (EV_A_ EV_SIGNAL, wl);
		3365	wl = wn;
		3366	}
		3367
		3368	if (types & EV_CHILD)
		3369	for (i = EV_PID_HASHSIZE; i--; )
		3370	for (wl = childs [i]; wl; )
		3371	{
		3372	wn = wl->next;
		3373	cb (EV_A_ EV_CHILD, wl);
		3374	wl = wn;
		3375	}
		3376	/* EV_STAT 0x00001000 /* stat data changed */
		3377	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3378	}
		3379	#endif
		3380
3035	#if EV_MULTIPLICITY	3381	#if EV_MULTIPLICITY
3036	#include "ev_wrap.h"	3382	#include "ev_wrap.h"
3037	#endif	3383	#endif
3038		3384
3039	#ifdef __cplusplus	3385	#ifdef __cplusplus

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