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Comparing libev/ev.c (file contents):
Revision 1.273 by root, Mon Nov 3 14:27:06 2008 UTC vs.
Revision 1.299 by root, Tue Jul 14 00:09:59 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
…		…
260	# define EV_USE_4HEAP !EV_MINIMAL	282	# define EV_USE_4HEAP !EV_MINIMAL
261	#endif	283	#endif
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
		287	#endif
		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
265	#endif	301	#endif
266		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
…		…
355	# define inline_speed static noinline	391	# define inline_speed static noinline
356	#else	392	#else
357	# define inline_speed static inline	393	# define inline_speed static inline
358	#endif	394	#endif
359		395
360	#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
361	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	401	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		402	#endif
362		403
363	#define EMPTY /* required for microsofts broken pseudo-c compiler */	404	#define EMPTY /* required for microsofts broken pseudo-c compiler */
364	#define EMPTY2(a,b) /* used to suppress some warnings */	405	#define EMPTY2(a,b) /* used to suppress some warnings */
365		406
366	typedef ev_watcher *W;	407	typedef ev_watcher *W;
…		…
368	typedef ev_watcher_time *WT;	409	typedef ev_watcher_time *WT;
369		410
370	#define ev_active(w) ((W)(w))->active	411	#define ev_active(w) ((W)(w))->active
371	#define ev_at(w) ((WT)(w))->at	412	#define ev_at(w) ((WT)(w))->at
372		413
373	#if EV_USE_MONOTONIC	414	#if EV_USE_REALTIME
374	/* 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 */
375	/* 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
376	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? */
377	#endif	422	#endif
378		423
379	#ifdef _WIN32	424	#ifdef _WIN32
380	# include "ev_win32.c"	425	# include "ev_win32.c"
…		…
445	#define ev_malloc(size) ev_realloc (0, (size))	490	#define ev_malloc(size) ev_realloc (0, (size))
446	#define ev_free(ptr) ev_realloc ((ptr), 0)	491	#define ev_free(ptr) ev_realloc ((ptr), 0)
447		492
448	/*****************************************************************************/	493	/*****************************************************************************/
449		494
		495	/* set in reify when reification needed */
		496	#define EV_ANFD_REIFY 1
		497
		498	/* file descriptor info structure */
450	typedef struct	499	typedef struct
451	{	500	{
452	WL head;	501	WL head;
453	unsigned char events;	502	unsigned char events; /* the events watched for */
454	unsigned char reify;	503	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
455	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */	504	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
456	unsigned char unused;	505	unsigned char unused;
457	#if EV_USE_EPOLL	506	#if EV_USE_EPOLL
458	unsigned int egen; /* generation counter to counter epoll bugs */	507	unsigned int egen; /* generation counter to counter epoll bugs */
459	#endif	508	#endif
460	#if EV_SELECT_IS_WINSOCKET	509	#if EV_SELECT_IS_WINSOCKET
461	SOCKET handle;	510	SOCKET handle;
462	#endif	511	#endif
463	} ANFD;	512	} ANFD;
464		513
		514	/* stores the pending event set for a given watcher */
465	typedef struct	515	typedef struct
466	{	516	{
467	W w;	517	W w;
468	int events;	518	int events; /* the pending event set for the given watcher */
469	} ANPENDING;	519	} ANPENDING;
470		520
471	#if EV_USE_INOTIFY	521	#if EV_USE_INOTIFY
472	/* hash table entry per inotify-id */	522	/* hash table entry per inotify-id */
473	typedef struct	523	typedef struct
…		…
476	} ANFS;	526	} ANFS;
477	#endif	527	#endif
478		528
479	/* Heap Entry */	529	/* Heap Entry */
480	#if EV_HEAP_CACHE_AT	530	#if EV_HEAP_CACHE_AT
		531	/* a heap element */
481	typedef struct {	532	typedef struct {
482	ev_tstamp at;	533	ev_tstamp at;
483	WT w;	534	WT w;
484	} ANHE;	535	} ANHE;
485		536
486	#define ANHE_w(he) (he).w /* access watcher, read-write */	537	#define ANHE_w(he) (he).w /* access watcher, read-write */
487	#define ANHE_at(he) (he).at /* access cached at, read-only */	538	#define ANHE_at(he) (he).at /* access cached at, read-only */
488	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */	539	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
489	#else	540	#else
		541	/* a heap element */
490	typedef WT ANHE;	542	typedef WT ANHE;
491		543
492	#define ANHE_w(he) (he)	544	#define ANHE_w(he) (he)
493	#define ANHE_at(he) (he)->at	545	#define ANHE_at(he) (he)->at
494	#define ANHE_at_cache(he)	546	#define ANHE_at_cache(he)
…		…
518		570
519	static int ev_default_loop_ptr;	571	static int ev_default_loop_ptr;
520		572
521	#endif	573	#endif
522		574
		575	#if EV_MINIMAL < 2
		576	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		577	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		578	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		579	#else
		580	# define EV_RELEASE_CB (void)0
		581	# define EV_ACQUIRE_CB (void)0
		582	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		583	#endif
		584
		585	#define EVUNLOOP_RECURSE 0x80
		586
523	/*****************************************************************************/	587	/*****************************************************************************/
524		588
		589	#ifndef EV_HAVE_EV_TIME
525	ev_tstamp	590	ev_tstamp
526	ev_time (void)	591	ev_time (void)
527	{	592	{
528	#if EV_USE_REALTIME	593	#if EV_USE_REALTIME
		594	if (expect_true (have_realtime))
		595	{
529	struct timespec ts;	596	struct timespec ts;
530	clock_gettime (CLOCK_REALTIME, &ts);	597	clock_gettime (CLOCK_REALTIME, &ts);
531	return ts.tv_sec + ts.tv_nsec * 1e-9;	598	return ts.tv_sec + ts.tv_nsec * 1e-9;
532	#else	599	}
		600	#endif
		601
533	struct timeval tv;	602	struct timeval tv;
534	gettimeofday (&tv, 0);	603	gettimeofday (&tv, 0);
535	return tv.tv_sec + tv.tv_usec * 1e-6;	604	return tv.tv_sec + tv.tv_usec * 1e-6;
536	#endif
537	}	605	}
		606	#endif
538		607
539	ev_tstamp inline_size	608	inline_size ev_tstamp
540	get_clock (void)	609	get_clock (void)
541	{	610	{
542	#if EV_USE_MONOTONIC	611	#if EV_USE_MONOTONIC
543	if (expect_true (have_monotonic))	612	if (expect_true (have_monotonic))
544	{	613	{
…		…
578		647
579	tv.tv_sec = (time_t)delay;	648	tv.tv_sec = (time_t)delay;
580	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	649	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
581		650
582	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */	651	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
583	/* somehting nto guaranteed by newer posix versions, but guaranteed */	652	/* somehting not guaranteed by newer posix versions, but guaranteed */
584	/* by older ones */	653	/* by older ones */
585	select (0, 0, 0, 0, &tv);	654	select (0, 0, 0, 0, &tv);
586	#endif	655	#endif
587	}	656	}
588	}	657	}
589		658
590	/*****************************************************************************/	659	/*****************************************************************************/
591		660
592	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	661	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
593		662
594	int inline_size	663	/* find a suitable new size for the given array, */
		664	/* hopefully by rounding to a ncie-to-malloc size */
		665	inline_size int
595	array_nextsize (int elem, int cur, int cnt)	666	array_nextsize (int elem, int cur, int cnt)
596	{	667	{
597	int ncur = cur + 1;	668	int ncur = cur + 1;
598		669
599	do	670	do
…		…
640	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	711	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
641	}	712	}
642	#endif	713	#endif
643		714
644	#define array_free(stem, idx) \	715	#define array_free(stem, idx) \
645	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	716	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
646		717
647	/*****************************************************************************/	718	/*****************************************************************************/
		719
		720	/* dummy callback for pending events */
		721	static void noinline
		722	pendingcb (EV_P_ ev_prepare *w, int revents)
		723	{
		724	}
648		725
649	void noinline	726	void noinline
650	ev_feed_event (EV_P_ void *w, int revents)	727	ev_feed_event (EV_P_ void *w, int revents)
651	{	728	{
652	W w_ = (W)w;	729	W w_ = (W)w;
…		…
661	pendings [pri][w_->pending - 1].w = w_;	738	pendings [pri][w_->pending - 1].w = w_;
662	pendings [pri][w_->pending - 1].events = revents;	739	pendings [pri][w_->pending - 1].events = revents;
663	}	740	}
664	}	741	}
665		742
666	void inline_speed	743	inline_speed void
		744	feed_reverse (EV_P_ W w)
		745	{
		746	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		747	rfeeds [rfeedcnt++] = w;
		748	}
		749
		750	inline_size void
		751	feed_reverse_done (EV_P_ int revents)
		752	{
		753	do
		754	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		755	while (rfeedcnt);
		756	}
		757
		758	inline_speed void
667	queue_events (EV_P_ W *events, int eventcnt, int type)	759	queue_events (EV_P_ W *events, int eventcnt, int type)
668	{	760	{
669	int i;	761	int i;
670		762
671	for (i = 0; i < eventcnt; ++i)	763	for (i = 0; i < eventcnt; ++i)
672	ev_feed_event (EV_A_ events [i], type);	764	ev_feed_event (EV_A_ events [i], type);
673	}	765	}
674		766
675	/*****************************************************************************/	767	/*****************************************************************************/
676		768
677	void inline_speed	769	inline_speed void
678	fd_event (EV_P_ int fd, int revents)	770	fd_event_nc (EV_P_ int fd, int revents)
679	{	771	{
680	ANFD *anfd = anfds + fd;	772	ANFD *anfd = anfds + fd;
681	ev_io *w;	773	ev_io *w;
682		774
683	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	775	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
687	if (ev)	779	if (ev)
688	ev_feed_event (EV_A_ (W)w, ev);	780	ev_feed_event (EV_A_ (W)w, ev);
689	}	781	}
690	}	782	}
691		783
		784	/* do not submit kernel events for fds that have reify set */
		785	/* because that means they changed while we were polling for new events */
		786	inline_speed void
		787	fd_event (EV_P_ int fd, int revents)
		788	{
		789	ANFD *anfd = anfds + fd;
		790
		791	if (expect_true (!anfd->reify))
		792	fd_event_nc (EV_A_ fd, revents);
		793	}
		794
692	void	795	void
693	ev_feed_fd_event (EV_P_ int fd, int revents)	796	ev_feed_fd_event (EV_P_ int fd, int revents)
694	{	797	{
695	if (fd >= 0 && fd < anfdmax)	798	if (fd >= 0 && fd < anfdmax)
696	fd_event (EV_A_ fd, revents);	799	fd_event_nc (EV_A_ fd, revents);
697	}	800	}
698		801
699	void inline_size	802	/* make sure the external fd watch events are in-sync */
		803	/* with the kernel/libev internal state */
		804	inline_size void
700	fd_reify (EV_P)	805	fd_reify (EV_P)
701	{	806	{
702	int i;	807	int i;
703		808
704	for (i = 0; i < fdchangecnt; ++i)	809	for (i = 0; i < fdchangecnt; ++i)
…		…
719	#ifdef EV_FD_TO_WIN32_HANDLE	824	#ifdef EV_FD_TO_WIN32_HANDLE
720	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	825	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
721	#else	826	#else
722	anfd->handle = _get_osfhandle (fd);	827	anfd->handle = _get_osfhandle (fd);
723	#endif	828	#endif
724	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	829	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
725	}	830	}
726	#endif	831	#endif
727		832
728	{	833	{
729	unsigned char o_events = anfd->events;	834	unsigned char o_events = anfd->events;
730	unsigned char o_reify = anfd->reify;	835	unsigned char o_reify = anfd->reify;
731		836
732	anfd->reify = 0;	837	anfd->reify = 0;
733	anfd->events = events;	838	anfd->events = events;
734		839
735	if (o_events != events || o_reify & EV_IOFDSET)	840	if (o_events != events || o_reify & EV__IOFDSET)
736	backend_modify (EV_A_ fd, o_events, events);	841	backend_modify (EV_A_ fd, o_events, events);
737	}	842	}
738	}	843	}
739		844
740	fdchangecnt = 0;	845	fdchangecnt = 0;
741	}	846	}
742		847
743	void inline_size	848	/* something about the given fd changed */
		849	inline_size void
744	fd_change (EV_P_ int fd, int flags)	850	fd_change (EV_P_ int fd, int flags)
745	{	851	{
746	unsigned char reify = anfds [fd].reify;	852	unsigned char reify = anfds [fd].reify;
747	anfds [fd].reify |= flags;	853	anfds [fd].reify |= flags;
748		854
…		…
752	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	858	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
753	fdchanges [fdchangecnt - 1] = fd;	859	fdchanges [fdchangecnt - 1] = fd;
754	}	860	}
755	}	861	}
756		862
757	void inline_speed	863	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		864	inline_speed void
758	fd_kill (EV_P_ int fd)	865	fd_kill (EV_P_ int fd)
759	{	866	{
760	ev_io *w;	867	ev_io *w;
761		868
762	while ((w = (ev_io *)anfds [fd].head))	869	while ((w = (ev_io *)anfds [fd].head))
…		…
764	ev_io_stop (EV_A_ w);	871	ev_io_stop (EV_A_ w);
765	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	872	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
766	}	873	}
767	}	874	}
768		875
769	int inline_size	876	/* check whether the given fd is atcually valid, for error recovery */
		877	inline_size int
770	fd_valid (int fd)	878	fd_valid (int fd)
771	{	879	{
772	#ifdef _WIN32	880	#ifdef _WIN32
773	return _get_osfhandle (fd) != -1;	881	return _get_osfhandle (fd) != -1;
774	#else	882	#else
…		…
811	for (fd = 0; fd < anfdmax; ++fd)	919	for (fd = 0; fd < anfdmax; ++fd)
812	if (anfds [fd].events)	920	if (anfds [fd].events)
813	{	921	{
814	anfds [fd].events = 0;	922	anfds [fd].events = 0;
815	anfds [fd].emask = 0;	923	anfds [fd].emask = 0;
816	fd_change (EV_A_ fd, EV_IOFDSET | 1);	924	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
817	}	925	}
818	}	926	}
819		927
820	/*****************************************************************************/	928	/*****************************************************************************/
821		929
…		…
837	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	945	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
838	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)	946	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
839	#define UPHEAP_DONE(p,k) ((p) == (k))	947	#define UPHEAP_DONE(p,k) ((p) == (k))
840		948
841	/* away from the root */	949	/* away from the root */
842	void inline_speed	950	inline_speed void
843	downheap (ANHE *heap, int N, int k)	951	downheap (ANHE *heap, int N, int k)
844	{	952	{
845	ANHE he = heap [k];	953	ANHE he = heap [k];
846	ANHE *E = heap + N + HEAP0;	954	ANHE *E = heap + N + HEAP0;
847		955
…		…
887	#define HEAP0 1	995	#define HEAP0 1
888	#define HPARENT(k) ((k) >> 1)	996	#define HPARENT(k) ((k) >> 1)
889	#define UPHEAP_DONE(p,k) (!(p))	997	#define UPHEAP_DONE(p,k) (!(p))
890		998
891	/* away from the root */	999	/* away from the root */
892	void inline_speed	1000	inline_speed void
893	downheap (ANHE *heap, int N, int k)	1001	downheap (ANHE *heap, int N, int k)
894	{	1002	{
895	ANHE he = heap [k];	1003	ANHE he = heap [k];
896		1004
897	for (;;)	1005	for (;;)
…		…
917	ev_active (ANHE_w (he)) = k;	1025	ev_active (ANHE_w (he)) = k;
918	}	1026	}
919	#endif	1027	#endif
920		1028
921	/* towards the root */	1029	/* towards the root */
922	void inline_speed	1030	inline_speed void
923	upheap (ANHE *heap, int k)	1031	upheap (ANHE *heap, int k)
924	{	1032	{
925	ANHE he = heap [k];	1033	ANHE he = heap [k];
926		1034
927	for (;;)	1035	for (;;)
…		…
938		1046
939	heap [k] = he;	1047	heap [k] = he;
940	ev_active (ANHE_w (he)) = k;	1048	ev_active (ANHE_w (he)) = k;
941	}	1049	}
942		1050
943	void inline_size	1051	/* move an element suitably so it is in a correct place */
		1052	inline_size void
944	adjustheap (ANHE *heap, int N, int k)	1053	adjustheap (ANHE *heap, int N, int k)
945	{	1054	{
946	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1055	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
947	upheap (heap, k);	1056	upheap (heap, k);
948	else	1057	else
949	downheap (heap, N, k);	1058	downheap (heap, N, k);
950	}	1059	}
951		1060
952	/* rebuild the heap: this function is used only once and executed rarely */	1061	/* rebuild the heap: this function is used only once and executed rarely */
953	void inline_size	1062	inline_size void
954	reheap (ANHE *heap, int N)	1063	reheap (ANHE *heap, int N)
955	{	1064	{
956	int i;	1065	int i;
957		1066
958	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */	1067	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
…		…
961	upheap (heap, i + HEAP0);	1070	upheap (heap, i + HEAP0);
962	}	1071	}
963		1072
964	/*****************************************************************************/	1073	/*****************************************************************************/
965		1074
		1075	/* associate signal watchers to a signal signal */
966	typedef struct	1076	typedef struct
967	{	1077	{
968	WL head;	1078	WL head;
969	EV_ATOMIC_T gotsig;	1079	EV_ATOMIC_T gotsig;
970	} ANSIG;	1080	} ANSIG;
…		…
974		1084
975	static EV_ATOMIC_T gotsig;	1085	static EV_ATOMIC_T gotsig;
976		1086
977	/*****************************************************************************/	1087	/*****************************************************************************/
978		1088
979	void inline_speed	1089	/* used to prepare libev internal fd's */
		1090	/* this is not fork-safe */
		1091	inline_speed void
980	fd_intern (int fd)	1092	fd_intern (int fd)
981	{	1093	{
982	#ifdef _WIN32	1094	#ifdef _WIN32
983	unsigned long arg = 1;	1095	unsigned long arg = 1;
984	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1096	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
989	}	1101	}
990		1102
991	static void noinline	1103	static void noinline
992	evpipe_init (EV_P)	1104	evpipe_init (EV_P)
993	{	1105	{
994	if (!ev_is_active (&pipeev))	1106	if (!ev_is_active (&pipe_w))
995	{	1107	{
996	#if EV_USE_EVENTFD	1108	#if EV_USE_EVENTFD
997	if ((evfd = eventfd (0, 0)) >= 0)	1109	if ((evfd = eventfd (0, 0)) >= 0)
998	{	1110	{
999	evpipe [0] = -1;	1111	evpipe [0] = -1;
1000	fd_intern (evfd);	1112	fd_intern (evfd);
1001	ev_io_set (&pipeev, evfd, EV_READ);	1113	ev_io_set (&pipe_w, evfd, EV_READ);
1002	}	1114	}
1003	else	1115	else
1004	#endif	1116	#endif
1005	{	1117	{
1006	while (pipe (evpipe))	1118	while (pipe (evpipe))
1007	ev_syserr ("(libev) error creating signal/async pipe");	1119	ev_syserr ("(libev) error creating signal/async pipe");
1008		1120
1009	fd_intern (evpipe [0]);	1121	fd_intern (evpipe [0]);
1010	fd_intern (evpipe [1]);	1122	fd_intern (evpipe [1]);
1011	ev_io_set (&pipeev, evpipe [0], EV_READ);	1123	ev_io_set (&pipe_w, evpipe [0], EV_READ);
1012	}	1124	}
1013		1125
1014	ev_io_start (EV_A_ &pipeev);	1126	ev_io_start (EV_A_ &pipe_w);
1015	ev_unref (EV_A); /* watcher should not keep loop alive */	1127	ev_unref (EV_A); /* watcher should not keep loop alive */
1016	}	1128	}
1017	}	1129	}
1018		1130
1019	void inline_size	1131	inline_size void
1020	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1132	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1021	{	1133	{
1022	if (!*flag)	1134	if (!*flag)
1023	{	1135	{
1024	int old_errno = errno; /* save errno because write might clobber it */	1136	int old_errno = errno; /* save errno because write might clobber it */
…		…
1037		1149
1038	errno = old_errno;	1150	errno = old_errno;
1039	}	1151	}
1040	}	1152	}
1041		1153
		1154	/* called whenever the libev signal pipe */
		1155	/* got some events (signal, async) */
1042	static void	1156	static void
1043	pipecb (EV_P_ ev_io *iow, int revents)	1157	pipecb (EV_P_ ev_io *iow, int revents)
1044	{	1158	{
1045	#if EV_USE_EVENTFD	1159	#if EV_USE_EVENTFD
1046	if (evfd >= 0)	1160	if (evfd >= 0)
…		…
1102	ev_feed_signal_event (EV_P_ int signum)	1216	ev_feed_signal_event (EV_P_ int signum)
1103	{	1217	{
1104	WL w;	1218	WL w;
1105		1219
1106	#if EV_MULTIPLICITY	1220	#if EV_MULTIPLICITY
1107	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1221	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1108	#endif	1222	#endif
1109		1223
1110	--signum;	1224	--signum;
1111		1225
1112	if (signum < 0 || signum >= signalmax)	1226	if (signum < 0 || signum >= signalmax)
…		…
1128		1242
1129	#ifndef WIFCONTINUED	1243	#ifndef WIFCONTINUED
1130	# define WIFCONTINUED(status) 0	1244	# define WIFCONTINUED(status) 0
1131	#endif	1245	#endif
1132		1246
1133	void inline_speed	1247	/* handle a single child status event */
		1248	inline_speed void
1134	child_reap (EV_P_ int chain, int pid, int status)	1249	child_reap (EV_P_ int chain, int pid, int status)
1135	{	1250	{
1136	ev_child *w;	1251	ev_child *w;
1137	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1252	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1138		1253
…		…
1151		1266
1152	#ifndef WCONTINUED	1267	#ifndef WCONTINUED
1153	# define WCONTINUED 0	1268	# define WCONTINUED 0
1154	#endif	1269	#endif
1155		1270
		1271	/* called on sigchld etc., calls waitpid */
1156	static void	1272	static void
1157	childcb (EV_P_ ev_signal *sw, int revents)	1273	childcb (EV_P_ ev_signal *sw, int revents)
1158	{	1274	{
1159	int pid, status;	1275	int pid, status;
1160		1276
…		…
1241	/* kqueue is borked on everything but netbsd apparently */	1357	/* kqueue is borked on everything but netbsd apparently */
1242	/* it usually doesn't work correctly on anything but sockets and pipes */	1358	/* it usually doesn't work correctly on anything but sockets and pipes */
1243	flags &= ~EVBACKEND_KQUEUE;	1359	flags &= ~EVBACKEND_KQUEUE;
1244	#endif	1360	#endif
1245	#ifdef __APPLE__	1361	#ifdef __APPLE__
1246	// flags &= ~EVBACKEND_KQUEUE; for documentation	1362	/* only select works correctly on that "unix-certified" platform */
1247	flags &= ~EVBACKEND_POLL;	1363	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1364	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1248	#endif	1365	#endif
1249		1366
1250	return flags;	1367	return flags;
1251	}	1368	}
1252		1369
…		…
1266	ev_backend (EV_P)	1383	ev_backend (EV_P)
1267	{	1384	{
1268	return backend;	1385	return backend;
1269	}	1386	}
1270		1387
		1388	#if EV_MINIMAL < 2
1271	unsigned int	1389	unsigned int
1272	ev_loop_count (EV_P)	1390	ev_loop_count (EV_P)
1273	{	1391	{
1274	return loop_count;	1392	return loop_count;
1275	}	1393	}
1276		1394
		1395	unsigned int
		1396	ev_loop_depth (EV_P)
		1397	{
		1398	return loop_depth;
		1399	}
		1400
1277	void	1401	void
1278	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1402	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1279	{	1403	{
1280	io_blocktime = interval;	1404	io_blocktime = interval;
1281	}	1405	}
…		…
1284	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1408	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1285	{	1409	{
1286	timeout_blocktime = interval;	1410	timeout_blocktime = interval;
1287	}	1411	}
1288		1412
		1413	void
		1414	ev_set_userdata (EV_P_ void *data)
		1415	{
		1416	userdata = data;
		1417	}
		1418
		1419	void *
		1420	ev_userdata (EV_P)
		1421	{
		1422	return userdata;
		1423	}
		1424
		1425	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1426	{
		1427	invoke_cb = invoke_pending_cb;
		1428	}
		1429
		1430	void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
		1431	{
		1432	release_cb = release;
		1433	acquire_cb = acquire;
		1434	}
		1435	#endif
		1436
		1437	/* initialise a loop structure, must be zero-initialised */
1289	static void noinline	1438	static void noinline
1290	loop_init (EV_P_ unsigned int flags)	1439	loop_init (EV_P_ unsigned int flags)
1291	{	1440	{
1292	if (!backend)	1441	if (!backend)
1293	{	1442	{
		1443	#if EV_USE_REALTIME
		1444	if (!have_realtime)
		1445	{
		1446	struct timespec ts;
		1447
		1448	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1449	have_realtime = 1;
		1450	}
		1451	#endif
		1452
1294	#if EV_USE_MONOTONIC	1453	#if EV_USE_MONOTONIC
		1454	if (!have_monotonic)
1295	{	1455	{
1296	struct timespec ts;	1456	struct timespec ts;
		1457
1297	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1458	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1298	have_monotonic = 1;	1459	have_monotonic = 1;
1299	}	1460	}
1300	#endif	1461	#endif
1301		1462
1302	ev_rt_now = ev_time ();	1463	ev_rt_now = ev_time ();
1303	mn_now = get_clock ();	1464	mn_now = get_clock ();
1304	now_floor = mn_now;	1465	now_floor = mn_now;
1305	rtmn_diff = ev_rt_now - mn_now;	1466	rtmn_diff = ev_rt_now - mn_now;
		1467	#if EV_MINIMAL < 2
		1468	invoke_cb = ev_invoke_pending;
		1469	#endif
1306		1470
1307	io_blocktime = 0.;	1471	io_blocktime = 0.;
1308	timeout_blocktime = 0.;	1472	timeout_blocktime = 0.;
1309	backend = 0;	1473	backend = 0;
1310	backend_fd = -1;	1474	backend_fd = -1;
…		…
1341	#endif	1505	#endif
1342	#if EV_USE_SELECT	1506	#if EV_USE_SELECT
1343	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1507	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1344	#endif	1508	#endif
1345		1509
		1510	ev_prepare_init (&pending_w, pendingcb);
		1511
1346	ev_init (&pipeev, pipecb);	1512	ev_init (&pipe_w, pipecb);
1347	ev_set_priority (&pipeev, EV_MAXPRI);	1513	ev_set_priority (&pipe_w, EV_MAXPRI);
1348	}	1514	}
1349	}	1515	}
1350		1516
		1517	/* free up a loop structure */
1351	static void noinline	1518	static void noinline
1352	loop_destroy (EV_P)	1519	loop_destroy (EV_P)
1353	{	1520	{
1354	int i;	1521	int i;
1355		1522
1356	if (ev_is_active (&pipeev))	1523	if (ev_is_active (&pipe_w))
1357	{	1524	{
1358	ev_ref (EV_A); /* signal watcher */	1525	ev_ref (EV_A); /* signal watcher */
1359	ev_io_stop (EV_A_ &pipeev);	1526	ev_io_stop (EV_A_ &pipe_w);
1360		1527
1361	#if EV_USE_EVENTFD	1528	#if EV_USE_EVENTFD
1362	if (evfd >= 0)	1529	if (evfd >= 0)
1363	close (evfd);	1530	close (evfd);
1364	#endif	1531	#endif
…		…
1403	}	1570	}
1404		1571
1405	ev_free (anfds); anfdmax = 0;	1572	ev_free (anfds); anfdmax = 0;
1406		1573
1407	/* have to use the microsoft-never-gets-it-right macro */	1574	/* have to use the microsoft-never-gets-it-right macro */
		1575	array_free (rfeed, EMPTY);
1408	array_free (fdchange, EMPTY);	1576	array_free (fdchange, EMPTY);
1409	array_free (timer, EMPTY);	1577	array_free (timer, EMPTY);
1410	#if EV_PERIODIC_ENABLE	1578	#if EV_PERIODIC_ENABLE
1411	array_free (periodic, EMPTY);	1579	array_free (periodic, EMPTY);
1412	#endif	1580	#endif
…		…
1421		1589
1422	backend = 0;	1590	backend = 0;
1423	}	1591	}
1424		1592
1425	#if EV_USE_INOTIFY	1593	#if EV_USE_INOTIFY
1426	void inline_size infy_fork (EV_P);	1594	inline_size void infy_fork (EV_P);
1427	#endif	1595	#endif
1428		1596
1429	void inline_size	1597	inline_size void
1430	loop_fork (EV_P)	1598	loop_fork (EV_P)
1431	{	1599	{
1432	#if EV_USE_PORT	1600	#if EV_USE_PORT
1433	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1601	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1434	#endif	1602	#endif
…		…
1440	#endif	1608	#endif
1441	#if EV_USE_INOTIFY	1609	#if EV_USE_INOTIFY
1442	infy_fork (EV_A);	1610	infy_fork (EV_A);
1443	#endif	1611	#endif
1444		1612
1445	if (ev_is_active (&pipeev))	1613	if (ev_is_active (&pipe_w))
1446	{	1614	{
1447	/* this "locks" the handlers against writing to the pipe */	1615	/* this "locks" the handlers against writing to the pipe */
1448	/* while we modify the fd vars */	1616	/* while we modify the fd vars */
1449	gotsig = 1;	1617	gotsig = 1;
1450	#if EV_ASYNC_ENABLE	1618	#if EV_ASYNC_ENABLE
1451	gotasync = 1;	1619	gotasync = 1;
1452	#endif	1620	#endif
1453		1621
1454	ev_ref (EV_A);	1622	ev_ref (EV_A);
1455	ev_io_stop (EV_A_ &pipeev);	1623	ev_io_stop (EV_A_ &pipe_w);
1456		1624
1457	#if EV_USE_EVENTFD	1625	#if EV_USE_EVENTFD
1458	if (evfd >= 0)	1626	if (evfd >= 0)
1459	close (evfd);	1627	close (evfd);
1460	#endif	1628	#endif
…		…
1465	close (evpipe [1]);	1633	close (evpipe [1]);
1466	}	1634	}
1467		1635
1468	evpipe_init (EV_A);	1636	evpipe_init (EV_A);
1469	/* now iterate over everything, in case we missed something */	1637	/* now iterate over everything, in case we missed something */
1470	pipecb (EV_A_ &pipeev, EV_READ);	1638	pipecb (EV_A_ &pipe_w, EV_READ);
1471	}	1639	}
1472		1640
1473	postfork = 0;	1641	postfork = 0;
1474	}	1642	}
1475		1643
…		…
1500	void	1668	void
1501	ev_loop_fork (EV_P)	1669	ev_loop_fork (EV_P)
1502	{	1670	{
1503	postfork = 1; /* must be in line with ev_default_fork */	1671	postfork = 1; /* must be in line with ev_default_fork */
1504	}	1672	}
		1673	#endif /* multiplicity */
1505		1674
1506	#if EV_VERIFY	1675	#if EV_VERIFY
1507	static void noinline	1676	static void noinline
1508	verify_watcher (EV_P_ W w)	1677	verify_watcher (EV_P_ W w)
1509	{	1678	{
1510	assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));	1679	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1511		1680
1512	if (w->pending)	1681	if (w->pending)
1513	assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));	1682	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1514	}	1683	}
1515		1684
1516	static void noinline	1685	static void noinline
1517	verify_heap (EV_P_ ANHE *heap, int N)	1686	verify_heap (EV_P_ ANHE *heap, int N)
1518	{	1687	{
1519	int i;	1688	int i;
1520		1689
1521	for (i = HEAP0; i < N + HEAP0; ++i)	1690	for (i = HEAP0; i < N + HEAP0; ++i)
1522	{	1691	{
1523	assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));	1692	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1524	assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));	1693	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1525	assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));	1694	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1526		1695
1527	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));	1696	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1528	}	1697	}
1529	}	1698	}
1530		1699
1531	static void noinline	1700	static void noinline
1532	array_verify (EV_P_ W *ws, int cnt)	1701	array_verify (EV_P_ W *ws, int cnt)
1533	{	1702	{
1534	while (cnt--)	1703	while (cnt--)
1535	{	1704	{
1536	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));	1705	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1537	verify_watcher (EV_A_ ws [cnt]);	1706	verify_watcher (EV_A_ ws [cnt]);
1538	}	1707	}
1539	}	1708	}
1540	#endif	1709	#endif
1541		1710
		1711	#if EV_MINIMAL < 2
1542	void	1712	void
1543	ev_loop_verify (EV_P)	1713	ev_loop_verify (EV_P)
1544	{	1714	{
1545	#if EV_VERIFY	1715	#if EV_VERIFY
1546	int i;	1716	int i;
…		…
1548		1718
1549	assert (activecnt >= -1);	1719	assert (activecnt >= -1);
1550		1720
1551	assert (fdchangemax >= fdchangecnt);	1721	assert (fdchangemax >= fdchangecnt);
1552	for (i = 0; i < fdchangecnt; ++i)	1722	for (i = 0; i < fdchangecnt; ++i)
1553	assert (("negative fd in fdchanges", fdchanges [i] >= 0));	1723	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1554		1724
1555	assert (anfdmax >= 0);	1725	assert (anfdmax >= 0);
1556	for (i = 0; i < anfdmax; ++i)	1726	for (i = 0; i < anfdmax; ++i)
1557	for (w = anfds [i].head; w; w = w->next)	1727	for (w = anfds [i].head; w; w = w->next)
1558	{	1728	{
1559	verify_watcher (EV_A_ (W)w);	1729	verify_watcher (EV_A_ (W)w);
1560	assert (("inactive fd watcher on anfd list", ev_active (w) == 1));	1730	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1561	assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));	1731	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1562	}	1732	}
1563		1733
1564	assert (timermax >= timercnt);	1734	assert (timermax >= timercnt);
1565	verify_heap (EV_A_ timers, timercnt);	1735	verify_heap (EV_A_ timers, timercnt);
1566		1736
…		…
1599	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1769	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1600	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)	1770	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1601	# endif	1771	# endif
1602	#endif	1772	#endif
1603	}	1773	}
1604		1774	#endif
1605	#endif /* multiplicity */
1606		1775
1607	#if EV_MULTIPLICITY	1776	#if EV_MULTIPLICITY
1608	struct ev_loop *	1777	struct ev_loop *
1609	ev_default_loop_init (unsigned int flags)	1778	ev_default_loop_init (unsigned int flags)
1610	#else	1779	#else
…		…
1671	ev_invoke (EV_P_ void *w, int revents)	1840	ev_invoke (EV_P_ void *w, int revents)
1672	{	1841	{
1673	EV_CB_INVOKE ((W)w, revents);	1842	EV_CB_INVOKE ((W)w, revents);
1674	}	1843	}
1675		1844
1676	void inline_speed	1845	void noinline
1677	call_pending (EV_P)	1846	ev_invoke_pending (EV_P)
1678	{	1847	{
1679	int pri;	1848	int pri;
1680		1849
1681	for (pri = NUMPRI; pri--; )	1850	for (pri = NUMPRI; pri--; )
1682	while (pendingcnt [pri])	1851	while (pendingcnt [pri])
1683	{	1852	{
1684	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1853	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1685		1854
1686	if (expect_true (p->w))
1687	{
1688	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1855	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1856	/* ^ this is no longer true, as pending_w could be here */
1689		1857
1690	p->w->pending = 0;	1858	p->w->pending = 0;
1691	EV_CB_INVOKE (p->w, p->events);	1859	EV_CB_INVOKE (p->w, p->events);
1692	EV_FREQUENT_CHECK;	1860	EV_FREQUENT_CHECK;
1693	}
1694	}	1861	}
1695	}	1862	}
1696		1863
1697	#if EV_IDLE_ENABLE	1864	#if EV_IDLE_ENABLE
1698	void inline_size	1865	/* make idle watchers pending. this handles the "call-idle */
		1866	/* only when higher priorities are idle" logic */
		1867	inline_size void
1699	idle_reify (EV_P)	1868	idle_reify (EV_P)
1700	{	1869	{
1701	if (expect_false (idleall))	1870	if (expect_false (idleall))
1702	{	1871	{
1703	int pri;	1872	int pri;
…		…
1715	}	1884	}
1716	}	1885	}
1717	}	1886	}
1718	#endif	1887	#endif
1719		1888
1720	void inline_size	1889	/* make timers pending */
		1890	inline_size void
1721	timers_reify (EV_P)	1891	timers_reify (EV_P)
1722	{	1892	{
1723	EV_FREQUENT_CHECK;	1893	EV_FREQUENT_CHECK;
1724		1894
1725	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	1895	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1726	{	1896	{
1727	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	1897	do
1728
1729	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1730
1731	/* first reschedule or stop timer */
1732	if (w->repeat)
1733	{	1898	{
		1899	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1900
		1901	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		1902
		1903	/* first reschedule or stop timer */
		1904	if (w->repeat)
		1905	{
1734	ev_at (w) += w->repeat;	1906	ev_at (w) += w->repeat;
1735	if (ev_at (w) < mn_now)	1907	if (ev_at (w) < mn_now)
1736	ev_at (w) = mn_now;	1908	ev_at (w) = mn_now;
1737		1909
1738	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1910	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1739		1911
1740	ANHE_at_cache (timers [HEAP0]);	1912	ANHE_at_cache (timers [HEAP0]);
1741	downheap (timers, timercnt, HEAP0);	1913	downheap (timers, timercnt, HEAP0);
		1914	}
		1915	else
		1916	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1917
		1918	EV_FREQUENT_CHECK;
		1919	feed_reverse (EV_A_ (W)w);
1742	}	1920	}
1743	else	1921	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1744	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1745		1922
1746	EV_FREQUENT_CHECK;
1747	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1923	feed_reverse_done (EV_A_ EV_TIMEOUT);
1748	}	1924	}
1749	}	1925	}
1750		1926
1751	#if EV_PERIODIC_ENABLE	1927	#if EV_PERIODIC_ENABLE
1752	void inline_size	1928	/* make periodics pending */
		1929	inline_size void
1753	periodics_reify (EV_P)	1930	periodics_reify (EV_P)
1754	{	1931	{
1755	EV_FREQUENT_CHECK;	1932	EV_FREQUENT_CHECK;
1756		1933
1757	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	1934	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1758	{	1935	{
1759	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	1936	int feed_count = 0;
1760		1937
1761	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	1938	do
1762
1763	/* first reschedule or stop timer */
1764	if (w->reschedule_cb)
1765	{	1939	{
		1940	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1941
		1942	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		1943
		1944	/* first reschedule or stop timer */
		1945	if (w->reschedule_cb)
		1946	{
1766	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1947	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1767		1948
1768	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));	1949	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1769		1950
1770	ANHE_at_cache (periodics [HEAP0]);	1951	ANHE_at_cache (periodics [HEAP0]);
1771	downheap (periodics, periodiccnt, HEAP0);	1952	downheap (periodics, periodiccnt, HEAP0);
		1953	}
		1954	else if (w->interval)
		1955	{
		1956	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1957	/* if next trigger time is not sufficiently in the future, put it there */
		1958	/* this might happen because of floating point inexactness */
		1959	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1960	{
		1961	ev_at (w) += w->interval;
		1962
		1963	/* if interval is unreasonably low we might still have a time in the past */
		1964	/* so correct this. this will make the periodic very inexact, but the user */
		1965	/* has effectively asked to get triggered more often than possible */
		1966	if (ev_at (w) < ev_rt_now)
		1967	ev_at (w) = ev_rt_now;
		1968	}
		1969
		1970	ANHE_at_cache (periodics [HEAP0]);
		1971	downheap (periodics, periodiccnt, HEAP0);
		1972	}
		1973	else
		1974	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1975
		1976	EV_FREQUENT_CHECK;
		1977	feed_reverse (EV_A_ (W)w);
1772	}	1978	}
1773	else if (w->interval)	1979	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1774	{
1775	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1776	/* if next trigger time is not sufficiently in the future, put it there */
1777	/* this might happen because of floating point inexactness */
1778	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1779	{
1780	ev_at (w) += w->interval;
1781		1980
1782	/* if interval is unreasonably low we might still have a time in the past */
1783	/* so correct this. this will make the periodic very inexact, but the user */
1784	/* has effectively asked to get triggered more often than possible */
1785	if (ev_at (w) < ev_rt_now)
1786	ev_at (w) = ev_rt_now;
1787	}
1788
1789	ANHE_at_cache (periodics [HEAP0]);
1790	downheap (periodics, periodiccnt, HEAP0);
1791	}
1792	else
1793	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1794
1795	EV_FREQUENT_CHECK;
1796	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1981	feed_reverse_done (EV_A_ EV_PERIODIC);
1797	}	1982	}
1798	}	1983	}
1799		1984
		1985	/* simply recalculate all periodics */
		1986	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1800	static void noinline	1987	static void noinline
1801	periodics_reschedule (EV_P)	1988	periodics_reschedule (EV_P)
1802	{	1989	{
1803	int i;	1990	int i;
1804		1991
…		…
1817		2004
1818	reheap (periodics, periodiccnt);	2005	reheap (periodics, periodiccnt);
1819	}	2006	}
1820	#endif	2007	#endif
1821		2008
1822	void inline_speed	2009	/* adjust all timers by a given offset */
		2010	static void noinline
		2011	timers_reschedule (EV_P_ ev_tstamp adjust)
		2012	{
		2013	int i;
		2014
		2015	for (i = 0; i < timercnt; ++i)
		2016	{
		2017	ANHE *he = timers + i + HEAP0;
		2018	ANHE_w (*he)->at += adjust;
		2019	ANHE_at_cache (*he);
		2020	}
		2021	}
		2022
		2023	/* fetch new monotonic and realtime times from the kernel */
		2024	/* also detetc if there was a timejump, and act accordingly */
		2025	inline_speed void
1823	time_update (EV_P_ ev_tstamp max_block)	2026	time_update (EV_P_ ev_tstamp max_block)
1824	{	2027	{
1825	int i;
1826
1827	#if EV_USE_MONOTONIC	2028	#if EV_USE_MONOTONIC
1828	if (expect_true (have_monotonic))	2029	if (expect_true (have_monotonic))
1829	{	2030	{
		2031	int i;
1830	ev_tstamp odiff = rtmn_diff;	2032	ev_tstamp odiff = rtmn_diff;
1831		2033
1832	mn_now = get_clock ();	2034	mn_now = get_clock ();
1833		2035
1834	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2036	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1860	ev_rt_now = ev_time ();	2062	ev_rt_now = ev_time ();
1861	mn_now = get_clock ();	2063	mn_now = get_clock ();
1862	now_floor = mn_now;	2064	now_floor = mn_now;
1863	}	2065	}
1864		2066
		2067	/* no timer adjustment, as the monotonic clock doesn't jump */
		2068	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1865	# if EV_PERIODIC_ENABLE	2069	# if EV_PERIODIC_ENABLE
1866	periodics_reschedule (EV_A);	2070	periodics_reschedule (EV_A);
1867	# endif	2071	# endif
1868	/* no timer adjustment, as the monotonic clock doesn't jump */
1869	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1870	}	2072	}
1871	else	2073	else
1872	#endif	2074	#endif
1873	{	2075	{
1874	ev_rt_now = ev_time ();	2076	ev_rt_now = ev_time ();
1875		2077
1876	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2078	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1877	{	2079	{
		2080	/* adjust timers. this is easy, as the offset is the same for all of them */
		2081	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1878	#if EV_PERIODIC_ENABLE	2082	#if EV_PERIODIC_ENABLE
1879	periodics_reschedule (EV_A);	2083	periodics_reschedule (EV_A);
1880	#endif	2084	#endif
1881	/* adjust timers. this is easy, as the offset is the same for all of them */
1882	for (i = 0; i < timercnt; ++i)
1883	{
1884	ANHE *he = timers + i + HEAP0;
1885	ANHE_w (*he)->at += ev_rt_now - mn_now;
1886	ANHE_at_cache (*he);
1887	}
1888	}	2085	}
1889		2086
1890	mn_now = ev_rt_now;	2087	mn_now = ev_rt_now;
1891	}	2088	}
1892	}	2089	}
1893		2090
1894	void	2091	void
1895	ev_ref (EV_P)
1896	{
1897	++activecnt;
1898	}
1899
1900	void
1901	ev_unref (EV_P)
1902	{
1903	--activecnt;
1904	}
1905
1906	void
1907	ev_now_update (EV_P)
1908	{
1909	time_update (EV_A_ 1e100);
1910	}
1911
1912	static int loop_done;
1913
1914	void
1915	ev_loop (EV_P_ int flags)	2092	ev_loop (EV_P_ int flags)
1916	{	2093	{
		2094	#if EV_MINIMAL < 2
		2095	++loop_depth;
		2096	#endif
		2097
		2098	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2099
1917	loop_done = EVUNLOOP_CANCEL;	2100	loop_done = EVUNLOOP_CANCEL;
1918		2101
1919	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2102	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1920		2103
1921	do	2104	do
1922	{	2105	{
1923	#if EV_VERIFY >= 2	2106	#if EV_VERIFY >= 2
1924	ev_loop_verify (EV_A);	2107	ev_loop_verify (EV_A);
…		…
1937	/* we might have forked, so queue fork handlers */	2120	/* we might have forked, so queue fork handlers */
1938	if (expect_false (postfork))	2121	if (expect_false (postfork))
1939	if (forkcnt)	2122	if (forkcnt)
1940	{	2123	{
1941	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2124	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1942	call_pending (EV_A);	2125	EV_INVOKE_PENDING;
1943	}	2126	}
1944	#endif	2127	#endif
1945		2128
1946	/* queue prepare watchers (and execute them) */	2129	/* queue prepare watchers (and execute them) */
1947	if (expect_false (preparecnt))	2130	if (expect_false (preparecnt))
1948	{	2131	{
1949	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2132	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1950	call_pending (EV_A);	2133	EV_INVOKE_PENDING;
1951	}	2134	}
1952		2135
1953	if (expect_false (!activecnt))	2136	if (expect_false (loop_done))
1954	break;	2137	break;
1955		2138
1956	/* we might have forked, so reify kernel state if necessary */	2139	/* we might have forked, so reify kernel state if necessary */
1957	if (expect_false (postfork))	2140	if (expect_false (postfork))
1958	loop_fork (EV_A);	2141	loop_fork (EV_A);
…		…
1965	ev_tstamp waittime = 0.;	2148	ev_tstamp waittime = 0.;
1966	ev_tstamp sleeptime = 0.;	2149	ev_tstamp sleeptime = 0.;
1967		2150
1968	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2151	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1969	{	2152	{
		2153	/* remember old timestamp for io_blocktime calculation */
		2154	ev_tstamp prev_mn_now = mn_now;
		2155
1970	/* update time to cancel out callback processing overhead */	2156	/* update time to cancel out callback processing overhead */
1971	time_update (EV_A_ 1e100);	2157	time_update (EV_A_ 1e100);
1972		2158
1973	waittime = MAX_BLOCKTIME;	2159	waittime = MAX_BLOCKTIME;
1974		2160
…		…
1984	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2170	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1985	if (waittime > to) waittime = to;	2171	if (waittime > to) waittime = to;
1986	}	2172	}
1987	#endif	2173	#endif
1988		2174
		2175	/* don't let timeouts decrease the waittime below timeout_blocktime */
1989	if (expect_false (waittime < timeout_blocktime))	2176	if (expect_false (waittime < timeout_blocktime))
1990	waittime = timeout_blocktime;	2177	waittime = timeout_blocktime;
1991		2178
1992	sleeptime = waittime - backend_fudge;	2179	/* extra check because io_blocktime is commonly 0 */
1993
1994	if (expect_true (sleeptime > io_blocktime))	2180	if (expect_false (io_blocktime))
1995	sleeptime = io_blocktime;
1996
1997	if (sleeptime)
1998	{	2181	{
		2182	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2183
		2184	if (sleeptime > waittime - backend_fudge)
		2185	sleeptime = waittime - backend_fudge;
		2186
		2187	if (expect_true (sleeptime > 0.))
		2188	{
1999	ev_sleep (sleeptime);	2189	ev_sleep (sleeptime);
2000	waittime -= sleeptime;	2190	waittime -= sleeptime;
		2191	}
2001	}	2192	}
2002	}	2193	}
2003		2194
		2195	#if EV_MINIMAL < 2
2004	++loop_count;	2196	++loop_count;
		2197	#endif
		2198	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2005	backend_poll (EV_A_ waittime);	2199	backend_poll (EV_A_ waittime);
		2200	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2006		2201
2007	/* update ev_rt_now, do magic */	2202	/* update ev_rt_now, do magic */
2008	time_update (EV_A_ waittime + sleeptime);	2203	time_update (EV_A_ waittime + sleeptime);
2009	}	2204	}
2010		2205
…		…
2021		2216
2022	/* queue check watchers, to be executed first */	2217	/* queue check watchers, to be executed first */
2023	if (expect_false (checkcnt))	2218	if (expect_false (checkcnt))
2024	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2219	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2025		2220
2026	call_pending (EV_A);	2221	EV_INVOKE_PENDING;
2027	}	2222	}
2028	while (expect_true (	2223	while (expect_true (
2029	activecnt	2224	activecnt
2030	&& !loop_done	2225	&& !loop_done
2031	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2226	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2032	));	2227	));
2033		2228
2034	if (loop_done == EVUNLOOP_ONE)	2229	if (loop_done == EVUNLOOP_ONE)
2035	loop_done = EVUNLOOP_CANCEL;	2230	loop_done = EVUNLOOP_CANCEL;
		2231
		2232	#if EV_MINIMAL < 2
		2233	--loop_depth;
		2234	#endif
2036	}	2235	}
2037		2236
2038	void	2237	void
2039	ev_unloop (EV_P_ int how)	2238	ev_unloop (EV_P_ int how)
2040	{	2239	{
2041	loop_done = how;	2240	loop_done = how;
2042	}	2241	}
2043		2242
		2243	void
		2244	ev_ref (EV_P)
		2245	{
		2246	++activecnt;
		2247	}
		2248
		2249	void
		2250	ev_unref (EV_P)
		2251	{
		2252	--activecnt;
		2253	}
		2254
		2255	void
		2256	ev_now_update (EV_P)
		2257	{
		2258	time_update (EV_A_ 1e100);
		2259	}
		2260
		2261	void
		2262	ev_suspend (EV_P)
		2263	{
		2264	ev_now_update (EV_A);
		2265	}
		2266
		2267	void
		2268	ev_resume (EV_P)
		2269	{
		2270	ev_tstamp mn_prev = mn_now;
		2271
		2272	ev_now_update (EV_A);
		2273	timers_reschedule (EV_A_ mn_now - mn_prev);
		2274	#if EV_PERIODIC_ENABLE
		2275	/* TODO: really do this? */
		2276	periodics_reschedule (EV_A);
		2277	#endif
		2278	}
		2279
2044	/*****************************************************************************/	2280	/*****************************************************************************/
		2281	/* singly-linked list management, used when the expected list length is short */
2045		2282
2046	void inline_size	2283	inline_size void
2047	wlist_add (WL *head, WL elem)	2284	wlist_add (WL *head, WL elem)
2048	{	2285	{
2049	elem->next = *head;	2286	elem->next = *head;
2050	*head = elem;	2287	*head = elem;
2051	}	2288	}
2052		2289
2053	void inline_size	2290	inline_size void
2054	wlist_del (WL *head, WL elem)	2291	wlist_del (WL *head, WL elem)
2055	{	2292	{
2056	while (*head)	2293	while (*head)
2057	{	2294	{
2058	if (*head == elem)	2295	if (*head == elem)
…		…
2063		2300
2064	head = &(*head)->next;	2301	head = &(*head)->next;
2065	}	2302	}
2066	}	2303	}
2067		2304
2068	void inline_speed	2305	/* internal, faster, version of ev_clear_pending */
		2306	inline_speed void
2069	clear_pending (EV_P_ W w)	2307	clear_pending (EV_P_ W w)
2070	{	2308	{
2071	if (w->pending)	2309	if (w->pending)
2072	{	2310	{
2073	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2311	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2074	w->pending = 0;	2312	w->pending = 0;
2075	}	2313	}
2076	}	2314	}
2077		2315
2078	int	2316	int
…		…
2082	int pending = w_->pending;	2320	int pending = w_->pending;
2083		2321
2084	if (expect_true (pending))	2322	if (expect_true (pending))
2085	{	2323	{
2086	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2324	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2325	p->w = (W)&pending_w;
2087	w_->pending = 0;	2326	w_->pending = 0;
2088	p->w = 0;
2089	return p->events;	2327	return p->events;
2090	}	2328	}
2091	else	2329	else
2092	return 0;	2330	return 0;
2093	}	2331	}
2094		2332
2095	void inline_size	2333	inline_size void
2096	pri_adjust (EV_P_ W w)	2334	pri_adjust (EV_P_ W w)
2097	{	2335	{
2098	int pri = w->priority;	2336	int pri = ev_priority (w);
2099	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2337	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2100	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2338	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2101	w->priority = pri;	2339	ev_set_priority (w, pri);
2102	}	2340	}
2103		2341
2104	void inline_speed	2342	inline_speed void
2105	ev_start (EV_P_ W w, int active)	2343	ev_start (EV_P_ W w, int active)
2106	{	2344	{
2107	pri_adjust (EV_A_ w);	2345	pri_adjust (EV_A_ w);
2108	w->active = active;	2346	w->active = active;
2109	ev_ref (EV_A);	2347	ev_ref (EV_A);
2110	}	2348	}
2111		2349
2112	void inline_size	2350	inline_size void
2113	ev_stop (EV_P_ W w)	2351	ev_stop (EV_P_ W w)
2114	{	2352	{
2115	ev_unref (EV_A);	2353	ev_unref (EV_A);
2116	w->active = 0;	2354	w->active = 0;
2117	}	2355	}
…		…
2124	int fd = w->fd;	2362	int fd = w->fd;
2125		2363
2126	if (expect_false (ev_is_active (w)))	2364	if (expect_false (ev_is_active (w)))
2127	return;	2365	return;
2128		2366
2129	assert (("ev_io_start called with negative fd", fd >= 0));	2367	assert (("libev: ev_io_start called with negative fd", fd >= 0));
2130	assert (("ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE))));	2368	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2131		2369
2132	EV_FREQUENT_CHECK;	2370	EV_FREQUENT_CHECK;
2133		2371
2134	ev_start (EV_A_ (W)w, 1);	2372	ev_start (EV_A_ (W)w, 1);
2135	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2373	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2136	wlist_add (&anfds[fd].head, (WL)w);	2374	wlist_add (&anfds[fd].head, (WL)w);
2137		2375
2138	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2376	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2139	w->events &= ~EV_IOFDSET;	2377	w->events &= ~EV__IOFDSET;
2140		2378
2141	EV_FREQUENT_CHECK;	2379	EV_FREQUENT_CHECK;
2142	}	2380	}
2143		2381
2144	void noinline	2382	void noinline
…		…
2146	{	2384	{
2147	clear_pending (EV_A_ (W)w);	2385	clear_pending (EV_A_ (W)w);
2148	if (expect_false (!ev_is_active (w)))	2386	if (expect_false (!ev_is_active (w)))
2149	return;	2387	return;
2150		2388
2151	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2389	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2152		2390
2153	EV_FREQUENT_CHECK;	2391	EV_FREQUENT_CHECK;
2154		2392
2155	wlist_del (&anfds[w->fd].head, (WL)w);	2393	wlist_del (&anfds[w->fd].head, (WL)w);
2156	ev_stop (EV_A_ (W)w);	2394	ev_stop (EV_A_ (W)w);
…		…
2166	if (expect_false (ev_is_active (w)))	2404	if (expect_false (ev_is_active (w)))
2167	return;	2405	return;
2168		2406
2169	ev_at (w) += mn_now;	2407	ev_at (w) += mn_now;
2170		2408
2171	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2409	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2172		2410
2173	EV_FREQUENT_CHECK;	2411	EV_FREQUENT_CHECK;
2174		2412
2175	++timercnt;	2413	++timercnt;
2176	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);	2414	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
…		…
2179	ANHE_at_cache (timers [ev_active (w)]);	2417	ANHE_at_cache (timers [ev_active (w)]);
2180	upheap (timers, ev_active (w));	2418	upheap (timers, ev_active (w));
2181		2419
2182	EV_FREQUENT_CHECK;	2420	EV_FREQUENT_CHECK;
2183		2421
2184	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2422	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2185	}	2423	}
2186		2424
2187	void noinline	2425	void noinline
2188	ev_timer_stop (EV_P_ ev_timer *w)	2426	ev_timer_stop (EV_P_ ev_timer *w)
2189	{	2427	{
…		…
2194	EV_FREQUENT_CHECK;	2432	EV_FREQUENT_CHECK;
2195		2433
2196	{	2434	{
2197	int active = ev_active (w);	2435	int active = ev_active (w);
2198		2436
2199	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2437	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2200		2438
2201	--timercnt;	2439	--timercnt;
2202		2440
2203	if (expect_true (active < timercnt + HEAP0))	2441	if (expect_true (active < timercnt + HEAP0))
2204	{	2442	{
…		…
2248		2486
2249	if (w->reschedule_cb)	2487	if (w->reschedule_cb)
2250	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2488	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2251	else if (w->interval)	2489	else if (w->interval)
2252	{	2490	{
2253	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2491	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2254	/* this formula differs from the one in periodic_reify because we do not always round up */	2492	/* this formula differs from the one in periodic_reify because we do not always round up */
2255	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2493	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2256	}	2494	}
2257	else	2495	else
2258	ev_at (w) = w->offset;	2496	ev_at (w) = w->offset;
…		…
2266	ANHE_at_cache (periodics [ev_active (w)]);	2504	ANHE_at_cache (periodics [ev_active (w)]);
2267	upheap (periodics, ev_active (w));	2505	upheap (periodics, ev_active (w));
2268		2506
2269	EV_FREQUENT_CHECK;	2507	EV_FREQUENT_CHECK;
2270		2508
2271	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2509	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2272	}	2510	}
2273		2511
2274	void noinline	2512	void noinline
2275	ev_periodic_stop (EV_P_ ev_periodic *w)	2513	ev_periodic_stop (EV_P_ ev_periodic *w)
2276	{	2514	{
…		…
2281	EV_FREQUENT_CHECK;	2519	EV_FREQUENT_CHECK;
2282		2520
2283	{	2521	{
2284	int active = ev_active (w);	2522	int active = ev_active (w);
2285		2523
2286	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2524	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2287		2525
2288	--periodiccnt;	2526	--periodiccnt;
2289		2527
2290	if (expect_true (active < periodiccnt + HEAP0))	2528	if (expect_true (active < periodiccnt + HEAP0))
2291	{	2529	{
…		…
2314		2552
2315	void noinline	2553	void noinline
2316	ev_signal_start (EV_P_ ev_signal *w)	2554	ev_signal_start (EV_P_ ev_signal *w)
2317	{	2555	{
2318	#if EV_MULTIPLICITY	2556	#if EV_MULTIPLICITY
2319	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2557	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2320	#endif	2558	#endif
2321	if (expect_false (ev_is_active (w)))	2559	if (expect_false (ev_is_active (w)))
2322	return;	2560	return;
2323		2561
2324	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2562	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2325		2563
2326	evpipe_init (EV_A);	2564	evpipe_init (EV_A);
2327		2565
2328	EV_FREQUENT_CHECK;	2566	EV_FREQUENT_CHECK;
2329		2567
…		…
2347	if (!((WL)w)->next)	2585	if (!((WL)w)->next)
2348	{	2586	{
2349	#if _WIN32	2587	#if _WIN32
2350	signal (w->signum, ev_sighandler);	2588	signal (w->signum, ev_sighandler);
2351	#else	2589	#else
2352	struct sigaction sa;	2590	struct sigaction sa = { };
2353	sa.sa_handler = ev_sighandler;	2591	sa.sa_handler = ev_sighandler;
2354	sigfillset (&sa.sa_mask);	2592	sigfillset (&sa.sa_mask);
2355	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2593	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2356	sigaction (w->signum, &sa, 0);	2594	sigaction (w->signum, &sa, 0);
2357	#endif	2595	#endif
…		…
2380		2618
2381	void	2619	void
2382	ev_child_start (EV_P_ ev_child *w)	2620	ev_child_start (EV_P_ ev_child *w)
2383	{	2621	{
2384	#if EV_MULTIPLICITY	2622	#if EV_MULTIPLICITY
2385	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2623	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2386	#endif	2624	#endif
2387	if (expect_false (ev_is_active (w)))	2625	if (expect_false (ev_is_active (w)))
2388	return;	2626	return;
2389		2627
2390	EV_FREQUENT_CHECK;	2628	EV_FREQUENT_CHECK;
…		…
2449	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2687	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2450	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2688	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2451		2689
2452	char *pend = strrchr (path, '/');	2690	char *pend = strrchr (path, '/');
2453		2691
2454	if (!pend)	2692	if (!pend || pend == path)
2455	break; /* whoops, no '/', complain to your admin */	2693	break;
2456		2694
2457	*pend = 0;	2695	*pend = 0;
2458	w->wd = inotify_add_watch (fs_fd, path, mask);	2696	w->wd = inotify_add_watch (fs_fd, path, mask);
2459	}	2697	}
2460	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2698	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2461	}	2699	}
2462	}	2700	}
2463	else	2701
		2702	if (w->wd >= 0)
2464	{	2703	{
2465	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2704	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2466		2705
2467	/* now local changes will be tracked by inotify, but remote changes won't */	2706	/* now local changes will be tracked by inotify, but remote changes won't */
2468	/* unless the filesystem it known to be local, we therefore still poll */	2707	/* unless the filesystem it known to be local, we therefore still poll */
…		…
2518		2757
2519	if (w->wd == wd || wd == -1)	2758	if (w->wd == wd || wd == -1)
2520	{	2759	{
2521	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2760	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2522	{	2761	{
		2762	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2523	w->wd = -1;	2763	w->wd = -1;
2524	infy_add (EV_A_ w); /* re-add, no matter what */	2764	infy_add (EV_A_ w); /* re-add, no matter what */
2525	}	2765	}
2526		2766
2527	stat_timer_cb (EV_A_ &w->timer, 0);	2767	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2540		2780
2541	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2781	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2542	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2782	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2543	}	2783	}
2544		2784
2545	void inline_size	2785	inline_size void
2546	check_2625 (EV_P)	2786	check_2625 (EV_P)
2547	{	2787	{
2548	/* kernels < 2.6.25 are borked	2788	/* kernels < 2.6.25 are borked
2549	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html	2789	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2550	*/	2790	*/
…		…
2563	return;	2803	return;
2564		2804
2565	fs_2625 = 1;	2805	fs_2625 = 1;
2566	}	2806	}
2567		2807
2568	void inline_size	2808	inline_size void
2569	infy_init (EV_P)	2809	infy_init (EV_P)
2570	{	2810	{
2571	if (fs_fd != -2)	2811	if (fs_fd != -2)
2572	return;	2812	return;
2573		2813
…		…
2583	ev_set_priority (&fs_w, EV_MAXPRI);	2823	ev_set_priority (&fs_w, EV_MAXPRI);
2584	ev_io_start (EV_A_ &fs_w);	2824	ev_io_start (EV_A_ &fs_w);
2585	}	2825	}
2586	}	2826	}
2587		2827
2588	void inline_size	2828	inline_size void
2589	infy_fork (EV_P)	2829	infy_fork (EV_P)
2590	{	2830	{
2591	int slot;	2831	int slot;
2592		2832
2593	if (fs_fd < 0)	2833	if (fs_fd < 0)
…		…
2874	static void	3114	static void
2875	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)	3115	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2876	{	3116	{
2877	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));	3117	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2878		3118
		3119	ev_embed_stop (EV_A_ w);
		3120
2879	{	3121	{
2880	struct ev_loop *loop = w->other;	3122	struct ev_loop *loop = w->other;
2881		3123
2882	ev_loop_fork (EV_A);	3124	ev_loop_fork (EV_A);
		3125	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2883	}	3126	}
		3127
		3128	ev_embed_start (EV_A_ w);
2884	}	3129	}
2885		3130
2886	#if 0	3131	#if 0
2887	static void	3132	static void
2888	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3133	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
…		…
2897	if (expect_false (ev_is_active (w)))	3142	if (expect_false (ev_is_active (w)))
2898	return;	3143	return;
2899		3144
2900	{	3145	{
2901	struct ev_loop *loop = w->other;	3146	struct ev_loop *loop = w->other;
2902	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3147	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2903	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3148	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2904	}	3149	}
2905		3150
2906	EV_FREQUENT_CHECK;	3151	EV_FREQUENT_CHECK;
2907		3152
…		…
3090	ev_timer_set (&once->to, timeout, 0.);	3335	ev_timer_set (&once->to, timeout, 0.);
3091	ev_timer_start (EV_A_ &once->to);	3336	ev_timer_start (EV_A_ &once->to);
3092	}	3337	}
3093	}	3338	}
3094		3339
		3340	/*****************************************************************************/
		3341
		3342	#if EV_WALK_ENABLE
		3343	void
		3344	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3345	{
		3346	int i, j;
		3347	ev_watcher_list *wl, *wn;
		3348
		3349	if (types & (EV_IO | EV_EMBED))
		3350	for (i = 0; i < anfdmax; ++i)
		3351	for (wl = anfds [i].head; wl; )
		3352	{
		3353	wn = wl->next;
		3354
		3355	#if EV_EMBED_ENABLE
		3356	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3357	{
		3358	if (types & EV_EMBED)
		3359	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3360	}
		3361	else
		3362	#endif
		3363	#if EV_USE_INOTIFY
		3364	if (ev_cb ((ev_io *)wl) == infy_cb)
		3365	;
		3366	else
		3367	#endif
		3368	if ((ev_io *)wl != &pipe_w)
		3369	if (types & EV_IO)
		3370	cb (EV_A_ EV_IO, wl);
		3371
		3372	wl = wn;
		3373	}
		3374
		3375	if (types & (EV_TIMER | EV_STAT))
		3376	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3377	#if EV_STAT_ENABLE
		3378	/*TODO: timer is not always active*/
		3379	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3380	{
		3381	if (types & EV_STAT)
		3382	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3383	}
		3384	else
		3385	#endif
		3386	if (types & EV_TIMER)
		3387	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3388
		3389	#if EV_PERIODIC_ENABLE
		3390	if (types & EV_PERIODIC)
		3391	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3392	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3393	#endif
		3394
		3395	#if EV_IDLE_ENABLE
		3396	if (types & EV_IDLE)
		3397	for (j = NUMPRI; i--; )
		3398	for (i = idlecnt [j]; i--; )
		3399	cb (EV_A_ EV_IDLE, idles [j][i]);
		3400	#endif
		3401
		3402	#if EV_FORK_ENABLE
		3403	if (types & EV_FORK)
		3404	for (i = forkcnt; i--; )
		3405	if (ev_cb (forks [i]) != embed_fork_cb)
		3406	cb (EV_A_ EV_FORK, forks [i]);
		3407	#endif
		3408
		3409	#if EV_ASYNC_ENABLE
		3410	if (types & EV_ASYNC)
		3411	for (i = asynccnt; i--; )
		3412	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3413	#endif
		3414
		3415	if (types & EV_PREPARE)
		3416	for (i = preparecnt; i--; )
		3417	#if EV_EMBED_ENABLE
		3418	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3419	#endif
		3420	cb (EV_A_ EV_PREPARE, prepares [i]);
		3421
		3422	if (types & EV_CHECK)
		3423	for (i = checkcnt; i--; )
		3424	cb (EV_A_ EV_CHECK, checks [i]);
		3425
		3426	if (types & EV_SIGNAL)
		3427	for (i = 0; i < signalmax; ++i)
		3428	for (wl = signals [i].head; wl; )
		3429	{
		3430	wn = wl->next;
		3431	cb (EV_A_ EV_SIGNAL, wl);
		3432	wl = wn;
		3433	}
		3434
		3435	if (types & EV_CHILD)
		3436	for (i = EV_PID_HASHSIZE; i--; )
		3437	for (wl = childs [i]; wl; )
		3438	{
		3439	wn = wl->next;
		3440	cb (EV_A_ EV_CHILD, wl);
		3441	wl = wn;
		3442	}
		3443	/* EV_STAT 0x00001000 /* stat data changed */
		3444	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3445	}
		3446	#endif
		3447
3095	#if EV_MULTIPLICITY	3448	#if EV_MULTIPLICITY
3096	#include "ev_wrap.h"	3449	#include "ev_wrap.h"
3097	#endif	3450	#endif
3098		3451
3099	#ifdef __cplusplus	3452	#ifdef __cplusplus

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