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Comparing libev/ev.c (file contents):
Revision 1.274 by root, Thu Nov 20 00:35:10 2008 UTC vs.
Revision 1.302 by root, Thu Jul 16 15:08:08 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	*
…		…
57	# endif	57	# endif
58	# ifndef EV_USE_MONOTONIC	58	# ifndef EV_USE_MONOTONIC
59	# define EV_USE_MONOTONIC 1	59	# define EV_USE_MONOTONIC 1
60	# endif	60	# endif
61	# endif	61	# endif
		62	# elif !defined(EV_USE_CLOCK_SYSCALL)
		63	# define EV_USE_CLOCK_SYSCALL 0
62	# endif	64	# endif
63		65
64	# if HAVE_CLOCK_GETTIME	66	# if HAVE_CLOCK_GETTIME
65	# ifndef EV_USE_MONOTONIC	67	# ifndef EV_USE_MONOTONIC
66	# define EV_USE_MONOTONIC 1	68	# define EV_USE_MONOTONIC 1
67	# endif	69	# endif
68	# ifndef EV_USE_REALTIME	70	# ifndef EV_USE_REALTIME
69	# define EV_USE_REALTIME 1	71	# define EV_USE_REALTIME 0
70	# endif	72	# endif
71	# else	73	# else
72	# ifndef EV_USE_MONOTONIC	74	# ifndef EV_USE_MONOTONIC
73	# define EV_USE_MONOTONIC 0	75	# define EV_USE_MONOTONIC 0
74	# endif	76	# endif
…		…
193	# define EV_USE_MONOTONIC 0	195	# define EV_USE_MONOTONIC 0
194	# endif	196	# endif
195	#endif	197	#endif
196		198
197	#ifndef EV_USE_REALTIME	199	#ifndef EV_USE_REALTIME
198	# define EV_USE_REALTIME 0	200	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
199	#endif	201	#endif
200		202
201	#ifndef EV_USE_NANOSLEEP	203	#ifndef EV_USE_NANOSLEEP
202	# if _POSIX_C_SOURCE >= 199309L	204	# if _POSIX_C_SOURCE >= 199309L
203	# define EV_USE_NANOSLEEP 1	205	# define EV_USE_NANOSLEEP 1
…		…
280	# define EV_USE_4HEAP !EV_MINIMAL	282	# define EV_USE_4HEAP !EV_MINIMAL
281	#endif	283	#endif
282		284
283	#ifndef EV_HEAP_CACHE_AT	285	#ifndef EV_HEAP_CACHE_AT
284	# 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
285	#endif	301	#endif
286		302
287	/* 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 */
288		304
289	#ifndef CLOCK_MONOTONIC	305	#ifndef CLOCK_MONOTONIC
…		…
320		336
321	#if EV_SELECT_IS_WINSOCKET	337	#if EV_SELECT_IS_WINSOCKET
322	# include <winsock.h>	338	# include <winsock.h>
323	#endif	339	#endif
324		340
325	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
326	/* which makes programs even slower. might work on other unices, too. */
327	#if EV_USE_CLOCK_SYSCALL
328	# include <syscall.h>
329	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
330	# undef EV_USE_MONOTONIC
331	# define EV_USE_MONOTONIC 1
332	#endif
333
334	#if EV_USE_EVENTFD	341	#if EV_USE_EVENTFD
335	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	342	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
336	# include <stdint.h>	343	# include <stdint.h>
337	# ifdef __cplusplus	344	# ifdef __cplusplus
338	extern "C" {	345	extern "C" {
…		…
384	# define inline_speed static noinline	391	# define inline_speed static noinline
385	#else	392	#else
386	# define inline_speed static inline	393	# define inline_speed static inline
387	#endif	394	#endif
388		395
389	#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
390	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	401	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		402	#endif
391		403
392	#define EMPTY /* required for microsofts broken pseudo-c compiler */	404	#define EMPTY /* required for microsofts broken pseudo-c compiler */
393	#define EMPTY2(a,b) /* used to suppress some warnings */	405	#define EMPTY2(a,b) /* used to suppress some warnings */
394		406
395	typedef ev_watcher *W;	407	typedef ev_watcher *W;
…		…
397	typedef ev_watcher_time *WT;	409	typedef ev_watcher_time *WT;
398		410
399	#define ev_active(w) ((W)(w))->active	411	#define ev_active(w) ((W)(w))->active
400	#define ev_at(w) ((WT)(w))->at	412	#define ev_at(w) ((WT)(w))->at
401		413
402	#if EV_USE_MONOTONIC	414	#if EV_USE_REALTIME
403	/* 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 */
404	/* 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
405	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? */
406	#endif	422	#endif
407		423
408	#ifdef _WIN32	424	#ifdef _WIN32
409	# include "ev_win32.c"	425	# include "ev_win32.c"
…		…
474	#define ev_malloc(size) ev_realloc (0, (size))	490	#define ev_malloc(size) ev_realloc (0, (size))
475	#define ev_free(ptr) ev_realloc ((ptr), 0)	491	#define ev_free(ptr) ev_realloc ((ptr), 0)
476		492
477	/*****************************************************************************/	493	/*****************************************************************************/
478		494
		495	/* set in reify when reification needed */
		496	#define EV_ANFD_REIFY 1
		497
		498	/* file descriptor info structure */
479	typedef struct	499	typedef struct
480	{	500	{
481	WL head;	501	WL head;
482	unsigned char events;	502	unsigned char events; /* the events watched for */
483	unsigned char reify;	503	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
484	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 */
485	unsigned char unused;	505	unsigned char unused;
486	#if EV_USE_EPOLL	506	#if EV_USE_EPOLL
487	unsigned int egen; /* generation counter to counter epoll bugs */	507	unsigned int egen; /* generation counter to counter epoll bugs */
488	#endif	508	#endif
489	#if EV_SELECT_IS_WINSOCKET	509	#if EV_SELECT_IS_WINSOCKET
490	SOCKET handle;	510	SOCKET handle;
491	#endif	511	#endif
492	} ANFD;	512	} ANFD;
493		513
		514	/* stores the pending event set for a given watcher */
494	typedef struct	515	typedef struct
495	{	516	{
496	W w;	517	W w;
497	int events;	518	int events; /* the pending event set for the given watcher */
498	} ANPENDING;	519	} ANPENDING;
499		520
500	#if EV_USE_INOTIFY	521	#if EV_USE_INOTIFY
501	/* hash table entry per inotify-id */	522	/* hash table entry per inotify-id */
502	typedef struct	523	typedef struct
…		…
505	} ANFS;	526	} ANFS;
506	#endif	527	#endif
507		528
508	/* Heap Entry */	529	/* Heap Entry */
509	#if EV_HEAP_CACHE_AT	530	#if EV_HEAP_CACHE_AT
		531	/* a heap element */
510	typedef struct {	532	typedef struct {
511	ev_tstamp at;	533	ev_tstamp at;
512	WT w;	534	WT w;
513	} ANHE;	535	} ANHE;
514		536
515	#define ANHE_w(he) (he).w /* access watcher, read-write */	537	#define ANHE_w(he) (he).w /* access watcher, read-write */
516	#define ANHE_at(he) (he).at /* access cached at, read-only */	538	#define ANHE_at(he) (he).at /* access cached at, read-only */
517	#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 */
518	#else	540	#else
		541	/* a heap element */
519	typedef WT ANHE;	542	typedef WT ANHE;
520		543
521	#define ANHE_w(he) (he)	544	#define ANHE_w(he) (he)
522	#define ANHE_at(he) (he)->at	545	#define ANHE_at(he) (he)->at
523	#define ANHE_at_cache(he)	546	#define ANHE_at_cache(he)
…		…
547		570
548	static int ev_default_loop_ptr;	571	static int ev_default_loop_ptr;
549		572
550	#endif	573	#endif
551		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
552	/*****************************************************************************/	587	/*****************************************************************************/
553		588
		589	#ifndef EV_HAVE_EV_TIME
554	ev_tstamp	590	ev_tstamp
555	ev_time (void)	591	ev_time (void)
556	{	592	{
557	#if EV_USE_REALTIME	593	#if EV_USE_REALTIME
		594	if (expect_true (have_realtime))
		595	{
558	struct timespec ts;	596	struct timespec ts;
559	clock_gettime (CLOCK_REALTIME, &ts);	597	clock_gettime (CLOCK_REALTIME, &ts);
560	return ts.tv_sec + ts.tv_nsec * 1e-9;	598	return ts.tv_sec + ts.tv_nsec * 1e-9;
561	#else	599	}
		600	#endif
		601
562	struct timeval tv;	602	struct timeval tv;
563	gettimeofday (&tv, 0);	603	gettimeofday (&tv, 0);
564	return tv.tv_sec + tv.tv_usec * 1e-6;	604	return tv.tv_sec + tv.tv_usec * 1e-6;
565	#endif
566	}	605	}
		606	#endif
567		607
568	ev_tstamp inline_size	608	inline_size ev_tstamp
569	get_clock (void)	609	get_clock (void)
570	{	610	{
571	#if EV_USE_MONOTONIC	611	#if EV_USE_MONOTONIC
572	if (expect_true (have_monotonic))	612	if (expect_true (have_monotonic))
573	{	613	{
…		…
607		647
608	tv.tv_sec = (time_t)delay;	648	tv.tv_sec = (time_t)delay;
609	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	649	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
610		650
611	/* 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 */
612	/* somehting nto guaranteed by newer posix versions, but guaranteed */	652	/* something not guaranteed by newer posix versions, but guaranteed */
613	/* by older ones */	653	/* by older ones */
614	select (0, 0, 0, 0, &tv);	654	select (0, 0, 0, 0, &tv);
615	#endif	655	#endif
616	}	656	}
617	}	657	}
618		658
619	/*****************************************************************************/	659	/*****************************************************************************/
620		660
621	#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 */
622		662
623	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
624	array_nextsize (int elem, int cur, int cnt)	666	array_nextsize (int elem, int cur, int cnt)
625	{	667	{
626	int ncur = cur + 1;	668	int ncur = cur + 1;
627		669
628	do	670	do
…		…
669	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	711	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
670	}	712	}
671	#endif	713	#endif
672		714
673	#define array_free(stem, idx) \	715	#define array_free(stem, idx) \
674	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
675		717
676	/*****************************************************************************/	718	/*****************************************************************************/
		719
		720	/* dummy callback for pending events */
		721	static void noinline
		722	pendingcb (EV_P_ ev_prepare *w, int revents)
		723	{
		724	}
677		725
678	void noinline	726	void noinline
679	ev_feed_event (EV_P_ void *w, int revents)	727	ev_feed_event (EV_P_ void *w, int revents)
680	{	728	{
681	W w_ = (W)w;	729	W w_ = (W)w;
…		…
690	pendings [pri][w_->pending - 1].w = w_;	738	pendings [pri][w_->pending - 1].w = w_;
691	pendings [pri][w_->pending - 1].events = revents;	739	pendings [pri][w_->pending - 1].events = revents;
692	}	740	}
693	}	741	}
694		742
695	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
696	queue_events (EV_P_ W *events, int eventcnt, int type)	759	queue_events (EV_P_ W *events, int eventcnt, int type)
697	{	760	{
698	int i;	761	int i;
699		762
700	for (i = 0; i < eventcnt; ++i)	763	for (i = 0; i < eventcnt; ++i)
701	ev_feed_event (EV_A_ events [i], type);	764	ev_feed_event (EV_A_ events [i], type);
702	}	765	}
703		766
704	/*****************************************************************************/	767	/*****************************************************************************/
705		768
706	void inline_speed	769	inline_speed void
707	fd_event (EV_P_ int fd, int revents)	770	fd_event_nc (EV_P_ int fd, int revents)
708	{	771	{
709	ANFD *anfd = anfds + fd;	772	ANFD *anfd = anfds + fd;
710	ev_io *w;	773	ev_io *w;
711		774
712	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)
…		…
716	if (ev)	779	if (ev)
717	ev_feed_event (EV_A_ (W)w, ev);	780	ev_feed_event (EV_A_ (W)w, ev);
718	}	781	}
719	}	782	}
720		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
721	void	795	void
722	ev_feed_fd_event (EV_P_ int fd, int revents)	796	ev_feed_fd_event (EV_P_ int fd, int revents)
723	{	797	{
724	if (fd >= 0 && fd < anfdmax)	798	if (fd >= 0 && fd < anfdmax)
725	fd_event (EV_A_ fd, revents);	799	fd_event_nc (EV_A_ fd, revents);
726	}	800	}
727		801
728	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
729	fd_reify (EV_P)	805	fd_reify (EV_P)
730	{	806	{
731	int i;	807	int i;
732		808
733	for (i = 0; i < fdchangecnt; ++i)	809	for (i = 0; i < fdchangecnt; ++i)
…		…
748	#ifdef EV_FD_TO_WIN32_HANDLE	824	#ifdef EV_FD_TO_WIN32_HANDLE
749	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	825	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
750	#else	826	#else
751	anfd->handle = _get_osfhandle (fd);	827	anfd->handle = _get_osfhandle (fd);
752	#endif	828	#endif
753	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));
754	}	830	}
755	#endif	831	#endif
756		832
757	{	833	{
758	unsigned char o_events = anfd->events;	834	unsigned char o_events = anfd->events;
759	unsigned char o_reify = anfd->reify;	835	unsigned char o_reify = anfd->reify;
760		836
761	anfd->reify = 0;	837	anfd->reify = 0;
762	anfd->events = events;	838	anfd->events = events;
763		839
764	if (o_events != events || o_reify & EV_IOFDSET)	840	if (o_events != events || o_reify & EV__IOFDSET)
765	backend_modify (EV_A_ fd, o_events, events);	841	backend_modify (EV_A_ fd, o_events, events);
766	}	842	}
767	}	843	}
768		844
769	fdchangecnt = 0;	845	fdchangecnt = 0;
770	}	846	}
771		847
772	void inline_size	848	/* something about the given fd changed */
		849	inline_size void
773	fd_change (EV_P_ int fd, int flags)	850	fd_change (EV_P_ int fd, int flags)
774	{	851	{
775	unsigned char reify = anfds [fd].reify;	852	unsigned char reify = anfds [fd].reify;
776	anfds [fd].reify |= flags;	853	anfds [fd].reify |= flags;
777		854
…		…
781	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	858	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
782	fdchanges [fdchangecnt - 1] = fd;	859	fdchanges [fdchangecnt - 1] = fd;
783	}	860	}
784	}	861	}
785		862
786	void inline_speed	863	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		864	inline_speed void
787	fd_kill (EV_P_ int fd)	865	fd_kill (EV_P_ int fd)
788	{	866	{
789	ev_io *w;	867	ev_io *w;
790		868
791	while ((w = (ev_io *)anfds [fd].head))	869	while ((w = (ev_io *)anfds [fd].head))
…		…
793	ev_io_stop (EV_A_ w);	871	ev_io_stop (EV_A_ w);
794	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);
795	}	873	}
796	}	874	}
797		875
798	int inline_size	876	/* check whether the given fd is atcually valid, for error recovery */
		877	inline_size int
799	fd_valid (int fd)	878	fd_valid (int fd)
800	{	879	{
801	#ifdef _WIN32	880	#ifdef _WIN32
802	return _get_osfhandle (fd) != -1;	881	return _get_osfhandle (fd) != -1;
803	#else	882	#else
…		…
840	for (fd = 0; fd < anfdmax; ++fd)	919	for (fd = 0; fd < anfdmax; ++fd)
841	if (anfds [fd].events)	920	if (anfds [fd].events)
842	{	921	{
843	anfds [fd].events = 0;	922	anfds [fd].events = 0;
844	anfds [fd].emask = 0;	923	anfds [fd].emask = 0;
845	fd_change (EV_A_ fd, EV_IOFDSET | 1);	924	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
846	}	925	}
847	}	926	}
848		927
849	/*****************************************************************************/	928	/*****************************************************************************/
850		929
…		…
866	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	945	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
867	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)	946	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
868	#define UPHEAP_DONE(p,k) ((p) == (k))	947	#define UPHEAP_DONE(p,k) ((p) == (k))
869		948
870	/* away from the root */	949	/* away from the root */
871	void inline_speed	950	inline_speed void
872	downheap (ANHE *heap, int N, int k)	951	downheap (ANHE *heap, int N, int k)
873	{	952	{
874	ANHE he = heap [k];	953	ANHE he = heap [k];
875	ANHE *E = heap + N + HEAP0;	954	ANHE *E = heap + N + HEAP0;
876		955
…		…
916	#define HEAP0 1	995	#define HEAP0 1
917	#define HPARENT(k) ((k) >> 1)	996	#define HPARENT(k) ((k) >> 1)
918	#define UPHEAP_DONE(p,k) (!(p))	997	#define UPHEAP_DONE(p,k) (!(p))
919		998
920	/* away from the root */	999	/* away from the root */
921	void inline_speed	1000	inline_speed void
922	downheap (ANHE *heap, int N, int k)	1001	downheap (ANHE *heap, int N, int k)
923	{	1002	{
924	ANHE he = heap [k];	1003	ANHE he = heap [k];
925		1004
926	for (;;)	1005	for (;;)
…		…
946	ev_active (ANHE_w (he)) = k;	1025	ev_active (ANHE_w (he)) = k;
947	}	1026	}
948	#endif	1027	#endif
949		1028
950	/* towards the root */	1029	/* towards the root */
951	void inline_speed	1030	inline_speed void
952	upheap (ANHE *heap, int k)	1031	upheap (ANHE *heap, int k)
953	{	1032	{
954	ANHE he = heap [k];	1033	ANHE he = heap [k];
955		1034
956	for (;;)	1035	for (;;)
…		…
967		1046
968	heap [k] = he;	1047	heap [k] = he;
969	ev_active (ANHE_w (he)) = k;	1048	ev_active (ANHE_w (he)) = k;
970	}	1049	}
971		1050
972	void inline_size	1051	/* move an element suitably so it is in a correct place */
		1052	inline_size void
973	adjustheap (ANHE *heap, int N, int k)	1053	adjustheap (ANHE *heap, int N, int k)
974	{	1054	{
975	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]))
976	upheap (heap, k);	1056	upheap (heap, k);
977	else	1057	else
978	downheap (heap, N, k);	1058	downheap (heap, N, k);
979	}	1059	}
980		1060
981	/* 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 */
982	void inline_size	1062	inline_size void
983	reheap (ANHE *heap, int N)	1063	reheap (ANHE *heap, int N)
984	{	1064	{
985	int i;	1065	int i;
986		1066
987	/* 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 */
…		…
990	upheap (heap, i + HEAP0);	1070	upheap (heap, i + HEAP0);
991	}	1071	}
992		1072
993	/*****************************************************************************/	1073	/*****************************************************************************/
994		1074
		1075	/* associate signal watchers to a signal signal */
995	typedef struct	1076	typedef struct
996	{	1077	{
997	WL head;	1078	WL head;
998	EV_ATOMIC_T gotsig;	1079	EV_ATOMIC_T gotsig;
999	} ANSIG;	1080	} ANSIG;
…		…
1003		1084
1004	static EV_ATOMIC_T gotsig;	1085	static EV_ATOMIC_T gotsig;
1005		1086
1006	/*****************************************************************************/	1087	/*****************************************************************************/
1007		1088
1008	void inline_speed	1089	/* used to prepare libev internal fd's */
		1090	/* this is not fork-safe */
		1091	inline_speed void
1009	fd_intern (int fd)	1092	fd_intern (int fd)
1010	{	1093	{
1011	#ifdef _WIN32	1094	#ifdef _WIN32
1012	unsigned long arg = 1;	1095	unsigned long arg = 1;
1013	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1096	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
1018	}	1101	}
1019		1102
1020	static void noinline	1103	static void noinline
1021	evpipe_init (EV_P)	1104	evpipe_init (EV_P)
1022	{	1105	{
1023	if (!ev_is_active (&pipeev))	1106	if (!ev_is_active (&pipe_w))
1024	{	1107	{
1025	#if EV_USE_EVENTFD	1108	#if EV_USE_EVENTFD
1026	if ((evfd = eventfd (0, 0)) >= 0)	1109	if ((evfd = eventfd (0, 0)) >= 0)
1027	{	1110	{
1028	evpipe [0] = -1;	1111	evpipe [0] = -1;
1029	fd_intern (evfd);	1112	fd_intern (evfd);
1030	ev_io_set (&pipeev, evfd, EV_READ);	1113	ev_io_set (&pipe_w, evfd, EV_READ);
1031	}	1114	}
1032	else	1115	else
1033	#endif	1116	#endif
1034	{	1117	{
1035	while (pipe (evpipe))	1118	while (pipe (evpipe))
1036	ev_syserr ("(libev) error creating signal/async pipe");	1119	ev_syserr ("(libev) error creating signal/async pipe");
1037		1120
1038	fd_intern (evpipe [0]);	1121	fd_intern (evpipe [0]);
1039	fd_intern (evpipe [1]);	1122	fd_intern (evpipe [1]);
1040	ev_io_set (&pipeev, evpipe [0], EV_READ);	1123	ev_io_set (&pipe_w, evpipe [0], EV_READ);
1041	}	1124	}
1042		1125
1043	ev_io_start (EV_A_ &pipeev);	1126	ev_io_start (EV_A_ &pipe_w);
1044	ev_unref (EV_A); /* watcher should not keep loop alive */	1127	ev_unref (EV_A); /* watcher should not keep loop alive */
1045	}	1128	}
1046	}	1129	}
1047		1130
1048	void inline_size	1131	inline_size void
1049	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1132	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1050	{	1133	{
1051	if (!*flag)	1134	if (!*flag)
1052	{	1135	{
1053	int old_errno = errno; /* save errno because write might clobber it */	1136	int old_errno = errno; /* save errno because write might clobber it */
…		…
1066		1149
1067	errno = old_errno;	1150	errno = old_errno;
1068	}	1151	}
1069	}	1152	}
1070		1153
		1154	/* called whenever the libev signal pipe */
		1155	/* got some events (signal, async) */
1071	static void	1156	static void
1072	pipecb (EV_P_ ev_io *iow, int revents)	1157	pipecb (EV_P_ ev_io *iow, int revents)
1073	{	1158	{
1074	#if EV_USE_EVENTFD	1159	#if EV_USE_EVENTFD
1075	if (evfd >= 0)	1160	if (evfd >= 0)
…		…
1131	ev_feed_signal_event (EV_P_ int signum)	1216	ev_feed_signal_event (EV_P_ int signum)
1132	{	1217	{
1133	WL w;	1218	WL w;
1134		1219
1135	#if EV_MULTIPLICITY	1220	#if EV_MULTIPLICITY
1136	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));
1137	#endif	1222	#endif
1138		1223
1139	--signum;	1224	--signum;
1140		1225
1141	if (signum < 0 || signum >= signalmax)	1226	if (signum < 0 || signum >= signalmax)
…		…
1157		1242
1158	#ifndef WIFCONTINUED	1243	#ifndef WIFCONTINUED
1159	# define WIFCONTINUED(status) 0	1244	# define WIFCONTINUED(status) 0
1160	#endif	1245	#endif
1161		1246
1162	void inline_speed	1247	/* handle a single child status event */
		1248	inline_speed void
1163	child_reap (EV_P_ int chain, int pid, int status)	1249	child_reap (EV_P_ int chain, int pid, int status)
1164	{	1250	{
1165	ev_child *w;	1251	ev_child *w;
1166	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1252	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1167		1253
…		…
1180		1266
1181	#ifndef WCONTINUED	1267	#ifndef WCONTINUED
1182	# define WCONTINUED 0	1268	# define WCONTINUED 0
1183	#endif	1269	#endif
1184		1270
		1271	/* called on sigchld etc., calls waitpid */
1185	static void	1272	static void
1186	childcb (EV_P_ ev_signal *sw, int revents)	1273	childcb (EV_P_ ev_signal *sw, int revents)
1187	{	1274	{
1188	int pid, status;	1275	int pid, status;
1189		1276
…		…
1270	/* kqueue is borked on everything but netbsd apparently */	1357	/* kqueue is borked on everything but netbsd apparently */
1271	/* 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 */
1272	flags &= ~EVBACKEND_KQUEUE;	1359	flags &= ~EVBACKEND_KQUEUE;
1273	#endif	1360	#endif
1274	#ifdef __APPLE__	1361	#ifdef __APPLE__
1275	// flags &= ~EVBACKEND_KQUEUE; for documentation	1362	/* only select works correctly on that "unix-certified" platform */
1276	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 */
1277	#endif	1365	#endif
1278		1366
1279	return flags;	1367	return flags;
1280	}	1368	}
1281		1369
…		…
1295	ev_backend (EV_P)	1383	ev_backend (EV_P)
1296	{	1384	{
1297	return backend;	1385	return backend;
1298	}	1386	}
1299		1387
		1388	#if EV_MINIMAL < 2
1300	unsigned int	1389	unsigned int
1301	ev_loop_count (EV_P)	1390	ev_loop_count (EV_P)
1302	{	1391	{
1303	return loop_count;	1392	return loop_count;
1304	}	1393	}
1305		1394
		1395	unsigned int
		1396	ev_loop_depth (EV_P)
		1397	{
		1398	return loop_depth;
		1399	}
		1400
1306	void	1401	void
1307	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1402	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1308	{	1403	{
1309	io_blocktime = interval;	1404	io_blocktime = interval;
1310	}	1405	}
…		…
1313	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1408	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1314	{	1409	{
1315	timeout_blocktime = interval;	1410	timeout_blocktime = interval;
1316	}	1411	}
1317		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 */
1318	static void noinline	1438	static void noinline
1319	loop_init (EV_P_ unsigned int flags)	1439	loop_init (EV_P_ unsigned int flags)
1320	{	1440	{
1321	if (!backend)	1441	if (!backend)
1322	{	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
1323	#if EV_USE_MONOTONIC	1453	#if EV_USE_MONOTONIC
		1454	if (!have_monotonic)
1324	{	1455	{
1325	struct timespec ts;	1456	struct timespec ts;
		1457
1326	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1458	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1327	have_monotonic = 1;	1459	have_monotonic = 1;
1328	}	1460	}
1329	#endif	1461	#endif
1330		1462
1331	ev_rt_now = ev_time ();	1463	ev_rt_now = ev_time ();
1332	mn_now = get_clock ();	1464	mn_now = get_clock ();
1333	now_floor = mn_now;	1465	now_floor = mn_now;
1334	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
1335		1470
1336	io_blocktime = 0.;	1471	io_blocktime = 0.;
1337	timeout_blocktime = 0.;	1472	timeout_blocktime = 0.;
1338	backend = 0;	1473	backend = 0;
1339	backend_fd = -1;	1474	backend_fd = -1;
…		…
1370	#endif	1505	#endif
1371	#if EV_USE_SELECT	1506	#if EV_USE_SELECT
1372	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1507	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1373	#endif	1508	#endif
1374		1509
		1510	ev_prepare_init (&pending_w, pendingcb);
		1511
1375	ev_init (&pipeev, pipecb);	1512	ev_init (&pipe_w, pipecb);
1376	ev_set_priority (&pipeev, EV_MAXPRI);	1513	ev_set_priority (&pipe_w, EV_MAXPRI);
1377	}	1514	}
1378	}	1515	}
1379		1516
		1517	/* free up a loop structure */
1380	static void noinline	1518	static void noinline
1381	loop_destroy (EV_P)	1519	loop_destroy (EV_P)
1382	{	1520	{
1383	int i;	1521	int i;
1384		1522
1385	if (ev_is_active (&pipeev))	1523	if (ev_is_active (&pipe_w))
1386	{	1524	{
1387	ev_ref (EV_A); /* signal watcher */	1525	ev_ref (EV_A); /* signal watcher */
1388	ev_io_stop (EV_A_ &pipeev);	1526	ev_io_stop (EV_A_ &pipe_w);
1389		1527
1390	#if EV_USE_EVENTFD	1528	#if EV_USE_EVENTFD
1391	if (evfd >= 0)	1529	if (evfd >= 0)
1392	close (evfd);	1530	close (evfd);
1393	#endif	1531	#endif
…		…
1432	}	1570	}
1433		1571
1434	ev_free (anfds); anfdmax = 0;	1572	ev_free (anfds); anfdmax = 0;
1435		1573
1436	/* 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);
1437	array_free (fdchange, EMPTY);	1576	array_free (fdchange, EMPTY);
1438	array_free (timer, EMPTY);	1577	array_free (timer, EMPTY);
1439	#if EV_PERIODIC_ENABLE	1578	#if EV_PERIODIC_ENABLE
1440	array_free (periodic, EMPTY);	1579	array_free (periodic, EMPTY);
1441	#endif	1580	#endif
…		…
1450		1589
1451	backend = 0;	1590	backend = 0;
1452	}	1591	}
1453		1592
1454	#if EV_USE_INOTIFY	1593	#if EV_USE_INOTIFY
1455	void inline_size infy_fork (EV_P);	1594	inline_size void infy_fork (EV_P);
1456	#endif	1595	#endif
1457		1596
1458	void inline_size	1597	inline_size void
1459	loop_fork (EV_P)	1598	loop_fork (EV_P)
1460	{	1599	{
1461	#if EV_USE_PORT	1600	#if EV_USE_PORT
1462	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1601	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1463	#endif	1602	#endif
…		…
1469	#endif	1608	#endif
1470	#if EV_USE_INOTIFY	1609	#if EV_USE_INOTIFY
1471	infy_fork (EV_A);	1610	infy_fork (EV_A);
1472	#endif	1611	#endif
1473		1612
1474	if (ev_is_active (&pipeev))	1613	if (ev_is_active (&pipe_w))
1475	{	1614	{
1476	/* this "locks" the handlers against writing to the pipe */	1615	/* this "locks" the handlers against writing to the pipe */
1477	/* while we modify the fd vars */	1616	/* while we modify the fd vars */
1478	gotsig = 1;	1617	gotsig = 1;
1479	#if EV_ASYNC_ENABLE	1618	#if EV_ASYNC_ENABLE
1480	gotasync = 1;	1619	gotasync = 1;
1481	#endif	1620	#endif
1482		1621
1483	ev_ref (EV_A);	1622	ev_ref (EV_A);
1484	ev_io_stop (EV_A_ &pipeev);	1623	ev_io_stop (EV_A_ &pipe_w);
1485		1624
1486	#if EV_USE_EVENTFD	1625	#if EV_USE_EVENTFD
1487	if (evfd >= 0)	1626	if (evfd >= 0)
1488	close (evfd);	1627	close (evfd);
1489	#endif	1628	#endif
…		…
1494	close (evpipe [1]);	1633	close (evpipe [1]);
1495	}	1634	}
1496		1635
1497	evpipe_init (EV_A);	1636	evpipe_init (EV_A);
1498	/* now iterate over everything, in case we missed something */	1637	/* now iterate over everything, in case we missed something */
1499	pipecb (EV_A_ &pipeev, EV_READ);	1638	pipecb (EV_A_ &pipe_w, EV_READ);
1500	}	1639	}
1501		1640
1502	postfork = 0;	1641	postfork = 0;
1503	}	1642	}
1504		1643
…		…
1529	void	1668	void
1530	ev_loop_fork (EV_P)	1669	ev_loop_fork (EV_P)
1531	{	1670	{
1532	postfork = 1; /* must be in line with ev_default_fork */	1671	postfork = 1; /* must be in line with ev_default_fork */
1533	}	1672	}
		1673	#endif /* multiplicity */
1534		1674
1535	#if EV_VERIFY	1675	#if EV_VERIFY
1536	static void noinline	1676	static void noinline
1537	verify_watcher (EV_P_ W w)	1677	verify_watcher (EV_P_ W w)
1538	{	1678	{
1539	assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));	1679	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1540		1680
1541	if (w->pending)	1681	if (w->pending)
1542	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));
1543	}	1683	}
1544		1684
1545	static void noinline	1685	static void noinline
1546	verify_heap (EV_P_ ANHE *heap, int N)	1686	verify_heap (EV_P_ ANHE *heap, int N)
1547	{	1687	{
1548	int i;	1688	int i;
1549		1689
1550	for (i = HEAP0; i < N + HEAP0; ++i)	1690	for (i = HEAP0; i < N + HEAP0; ++i)
1551	{	1691	{
1552	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));
1553	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])));
1554	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]))));
1555		1695
1556	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));	1696	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1557	}	1697	}
1558	}	1698	}
1559		1699
1560	static void noinline	1700	static void noinline
1561	array_verify (EV_P_ W *ws, int cnt)	1701	array_verify (EV_P_ W *ws, int cnt)
1562	{	1702	{
1563	while (cnt--)	1703	while (cnt--)
1564	{	1704	{
1565	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));	1705	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1566	verify_watcher (EV_A_ ws [cnt]);	1706	verify_watcher (EV_A_ ws [cnt]);
1567	}	1707	}
1568	}	1708	}
1569	#endif	1709	#endif
1570		1710
		1711	#if EV_MINIMAL < 2
1571	void	1712	void
1572	ev_loop_verify (EV_P)	1713	ev_loop_verify (EV_P)
1573	{	1714	{
1574	#if EV_VERIFY	1715	#if EV_VERIFY
1575	int i;	1716	int i;
…		…
1577		1718
1578	assert (activecnt >= -1);	1719	assert (activecnt >= -1);
1579		1720
1580	assert (fdchangemax >= fdchangecnt);	1721	assert (fdchangemax >= fdchangecnt);
1581	for (i = 0; i < fdchangecnt; ++i)	1722	for (i = 0; i < fdchangecnt; ++i)
1582	assert (("negative fd in fdchanges", fdchanges [i] >= 0));	1723	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1583		1724
1584	assert (anfdmax >= 0);	1725	assert (anfdmax >= 0);
1585	for (i = 0; i < anfdmax; ++i)	1726	for (i = 0; i < anfdmax; ++i)
1586	for (w = anfds [i].head; w; w = w->next)	1727	for (w = anfds [i].head; w; w = w->next)
1587	{	1728	{
1588	verify_watcher (EV_A_ (W)w);	1729	verify_watcher (EV_A_ (W)w);
1589	assert (("inactive fd watcher on anfd list", ev_active (w) == 1));	1730	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1590	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));
1591	}	1732	}
1592		1733
1593	assert (timermax >= timercnt);	1734	assert (timermax >= timercnt);
1594	verify_heap (EV_A_ timers, timercnt);	1735	verify_heap (EV_A_ timers, timercnt);
1595		1736
…		…
1628	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)
1629	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)	1770	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1630	# endif	1771	# endif
1631	#endif	1772	#endif
1632	}	1773	}
1633		1774	#endif
1634	#endif /* multiplicity */
1635		1775
1636	#if EV_MULTIPLICITY	1776	#if EV_MULTIPLICITY
1637	struct ev_loop *	1777	struct ev_loop *
1638	ev_default_loop_init (unsigned int flags)	1778	ev_default_loop_init (unsigned int flags)
1639	#else	1779	#else
…		…
1700	ev_invoke (EV_P_ void *w, int revents)	1840	ev_invoke (EV_P_ void *w, int revents)
1701	{	1841	{
1702	EV_CB_INVOKE ((W)w, revents);	1842	EV_CB_INVOKE ((W)w, revents);
1703	}	1843	}
1704		1844
1705	void inline_speed	1845	unsigned int
1706	call_pending (EV_P)	1846	ev_pending_count (EV_P)
		1847	{
		1848	int pri;
		1849	unsigned int count = 0;
		1850
		1851	for (pri = NUMPRI; pri--; )
		1852	count += pendingcnt [pri];
		1853
		1854	return count;
		1855	}
		1856
		1857	void noinline
		1858	ev_invoke_pending (EV_P)
1707	{	1859	{
1708	int pri;	1860	int pri;
1709		1861
1710	for (pri = NUMPRI; pri--; )	1862	for (pri = NUMPRI; pri--; )
1711	while (pendingcnt [pri])	1863	while (pendingcnt [pri])
1712	{	1864	{
1713	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1865	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1714		1866
1715	if (expect_true (p->w))
1716	{
1717	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1867	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1868	/* ^ this is no longer true, as pending_w could be here */
1718		1869
1719	p->w->pending = 0;	1870	p->w->pending = 0;
1720	EV_CB_INVOKE (p->w, p->events);	1871	EV_CB_INVOKE (p->w, p->events);
1721	EV_FREQUENT_CHECK;	1872	EV_FREQUENT_CHECK;
1722	}
1723	}	1873	}
1724	}	1874	}
1725		1875
1726	#if EV_IDLE_ENABLE	1876	#if EV_IDLE_ENABLE
1727	void inline_size	1877	/* make idle watchers pending. this handles the "call-idle */
		1878	/* only when higher priorities are idle" logic */
		1879	inline_size void
1728	idle_reify (EV_P)	1880	idle_reify (EV_P)
1729	{	1881	{
1730	if (expect_false (idleall))	1882	if (expect_false (idleall))
1731	{	1883	{
1732	int pri;	1884	int pri;
…		…
1744	}	1896	}
1745	}	1897	}
1746	}	1898	}
1747	#endif	1899	#endif
1748		1900
1749	void inline_size	1901	/* make timers pending */
		1902	inline_size void
1750	timers_reify (EV_P)	1903	timers_reify (EV_P)
1751	{	1904	{
1752	EV_FREQUENT_CHECK;	1905	EV_FREQUENT_CHECK;
1753		1906
1754	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	1907	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1755	{	1908	{
1756	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	1909	do
1757
1758	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1759
1760	/* first reschedule or stop timer */
1761	if (w->repeat)
1762	{	1910	{
		1911	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1912
		1913	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		1914
		1915	/* first reschedule or stop timer */
		1916	if (w->repeat)
		1917	{
1763	ev_at (w) += w->repeat;	1918	ev_at (w) += w->repeat;
1764	if (ev_at (w) < mn_now)	1919	if (ev_at (w) < mn_now)
1765	ev_at (w) = mn_now;	1920	ev_at (w) = mn_now;
1766		1921
1767	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1922	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1768		1923
1769	ANHE_at_cache (timers [HEAP0]);	1924	ANHE_at_cache (timers [HEAP0]);
1770	downheap (timers, timercnt, HEAP0);	1925	downheap (timers, timercnt, HEAP0);
		1926	}
		1927	else
		1928	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1929
		1930	EV_FREQUENT_CHECK;
		1931	feed_reverse (EV_A_ (W)w);
1771	}	1932	}
1772	else	1933	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1773	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1774		1934
1775	EV_FREQUENT_CHECK;
1776	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1935	feed_reverse_done (EV_A_ EV_TIMEOUT);
1777	}	1936	}
1778	}	1937	}
1779		1938
1780	#if EV_PERIODIC_ENABLE	1939	#if EV_PERIODIC_ENABLE
1781	void inline_size	1940	/* make periodics pending */
		1941	inline_size void
1782	periodics_reify (EV_P)	1942	periodics_reify (EV_P)
1783	{	1943	{
1784	EV_FREQUENT_CHECK;	1944	EV_FREQUENT_CHECK;
1785		1945
1786	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	1946	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1787	{	1947	{
1788	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	1948	int feed_count = 0;
1789		1949
1790	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	1950	do
1791
1792	/* first reschedule or stop timer */
1793	if (w->reschedule_cb)
1794	{	1951	{
		1952	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1953
		1954	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		1955
		1956	/* first reschedule or stop timer */
		1957	if (w->reschedule_cb)
		1958	{
1795	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1959	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1796		1960
1797	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));	1961	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1798		1962
1799	ANHE_at_cache (periodics [HEAP0]);	1963	ANHE_at_cache (periodics [HEAP0]);
1800	downheap (periodics, periodiccnt, HEAP0);	1964	downheap (periodics, periodiccnt, HEAP0);
		1965	}
		1966	else if (w->interval)
		1967	{
		1968	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1969	/* if next trigger time is not sufficiently in the future, put it there */
		1970	/* this might happen because of floating point inexactness */
		1971	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1972	{
		1973	ev_at (w) += w->interval;
		1974
		1975	/* if interval is unreasonably low we might still have a time in the past */
		1976	/* so correct this. this will make the periodic very inexact, but the user */
		1977	/* has effectively asked to get triggered more often than possible */
		1978	if (ev_at (w) < ev_rt_now)
		1979	ev_at (w) = ev_rt_now;
		1980	}
		1981
		1982	ANHE_at_cache (periodics [HEAP0]);
		1983	downheap (periodics, periodiccnt, HEAP0);
		1984	}
		1985	else
		1986	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1987
		1988	EV_FREQUENT_CHECK;
		1989	feed_reverse (EV_A_ (W)w);
1801	}	1990	}
1802	else if (w->interval)	1991	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1803	{
1804	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1805	/* if next trigger time is not sufficiently in the future, put it there */
1806	/* this might happen because of floating point inexactness */
1807	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1808	{
1809	ev_at (w) += w->interval;
1810		1992
1811	/* if interval is unreasonably low we might still have a time in the past */
1812	/* so correct this. this will make the periodic very inexact, but the user */
1813	/* has effectively asked to get triggered more often than possible */
1814	if (ev_at (w) < ev_rt_now)
1815	ev_at (w) = ev_rt_now;
1816	}
1817
1818	ANHE_at_cache (periodics [HEAP0]);
1819	downheap (periodics, periodiccnt, HEAP0);
1820	}
1821	else
1822	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1823
1824	EV_FREQUENT_CHECK;
1825	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1993	feed_reverse_done (EV_A_ EV_PERIODIC);
1826	}	1994	}
1827	}	1995	}
1828		1996
		1997	/* simply recalculate all periodics */
		1998	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1829	static void noinline	1999	static void noinline
1830	periodics_reschedule (EV_P)	2000	periodics_reschedule (EV_P)
1831	{	2001	{
1832	int i;	2002	int i;
1833		2003
…		…
1846		2016
1847	reheap (periodics, periodiccnt);	2017	reheap (periodics, periodiccnt);
1848	}	2018	}
1849	#endif	2019	#endif
1850		2020
1851	void inline_speed	2021	/* adjust all timers by a given offset */
		2022	static void noinline
		2023	timers_reschedule (EV_P_ ev_tstamp adjust)
		2024	{
		2025	int i;
		2026
		2027	for (i = 0; i < timercnt; ++i)
		2028	{
		2029	ANHE *he = timers + i + HEAP0;
		2030	ANHE_w (*he)->at += adjust;
		2031	ANHE_at_cache (*he);
		2032	}
		2033	}
		2034
		2035	/* fetch new monotonic and realtime times from the kernel */
		2036	/* also detetc if there was a timejump, and act accordingly */
		2037	inline_speed void
1852	time_update (EV_P_ ev_tstamp max_block)	2038	time_update (EV_P_ ev_tstamp max_block)
1853	{	2039	{
1854	int i;
1855
1856	#if EV_USE_MONOTONIC	2040	#if EV_USE_MONOTONIC
1857	if (expect_true (have_monotonic))	2041	if (expect_true (have_monotonic))
1858	{	2042	{
		2043	int i;
1859	ev_tstamp odiff = rtmn_diff;	2044	ev_tstamp odiff = rtmn_diff;
1860		2045
1861	mn_now = get_clock ();	2046	mn_now = get_clock ();
1862		2047
1863	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2048	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1889	ev_rt_now = ev_time ();	2074	ev_rt_now = ev_time ();
1890	mn_now = get_clock ();	2075	mn_now = get_clock ();
1891	now_floor = mn_now;	2076	now_floor = mn_now;
1892	}	2077	}
1893		2078
		2079	/* no timer adjustment, as the monotonic clock doesn't jump */
		2080	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1894	# if EV_PERIODIC_ENABLE	2081	# if EV_PERIODIC_ENABLE
1895	periodics_reschedule (EV_A);	2082	periodics_reschedule (EV_A);
1896	# endif	2083	# endif
1897	/* no timer adjustment, as the monotonic clock doesn't jump */
1898	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1899	}	2084	}
1900	else	2085	else
1901	#endif	2086	#endif
1902	{	2087	{
1903	ev_rt_now = ev_time ();	2088	ev_rt_now = ev_time ();
1904		2089
1905	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2090	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1906	{	2091	{
		2092	/* adjust timers. this is easy, as the offset is the same for all of them */
		2093	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1907	#if EV_PERIODIC_ENABLE	2094	#if EV_PERIODIC_ENABLE
1908	periodics_reschedule (EV_A);	2095	periodics_reschedule (EV_A);
1909	#endif	2096	#endif
1910	/* adjust timers. this is easy, as the offset is the same for all of them */
1911	for (i = 0; i < timercnt; ++i)
1912	{
1913	ANHE *he = timers + i + HEAP0;
1914	ANHE_w (*he)->at += ev_rt_now - mn_now;
1915	ANHE_at_cache (*he);
1916	}
1917	}	2097	}
1918		2098
1919	mn_now = ev_rt_now;	2099	mn_now = ev_rt_now;
1920	}	2100	}
1921	}	2101	}
1922		2102
1923	void	2103	void
1924	ev_ref (EV_P)
1925	{
1926	++activecnt;
1927	}
1928
1929	void
1930	ev_unref (EV_P)
1931	{
1932	--activecnt;
1933	}
1934
1935	void
1936	ev_now_update (EV_P)
1937	{
1938	time_update (EV_A_ 1e100);
1939	}
1940
1941	static int loop_done;
1942
1943	void
1944	ev_loop (EV_P_ int flags)	2104	ev_loop (EV_P_ int flags)
1945	{	2105	{
		2106	#if EV_MINIMAL < 2
		2107	++loop_depth;
		2108	#endif
		2109
		2110	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2111
1946	loop_done = EVUNLOOP_CANCEL;	2112	loop_done = EVUNLOOP_CANCEL;
1947		2113
1948	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2114	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1949		2115
1950	do	2116	do
1951	{	2117	{
1952	#if EV_VERIFY >= 2	2118	#if EV_VERIFY >= 2
1953	ev_loop_verify (EV_A);	2119	ev_loop_verify (EV_A);
…		…
1966	/* we might have forked, so queue fork handlers */	2132	/* we might have forked, so queue fork handlers */
1967	if (expect_false (postfork))	2133	if (expect_false (postfork))
1968	if (forkcnt)	2134	if (forkcnt)
1969	{	2135	{
1970	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2136	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1971	call_pending (EV_A);	2137	EV_INVOKE_PENDING;
1972	}	2138	}
1973	#endif	2139	#endif
1974		2140
1975	/* queue prepare watchers (and execute them) */	2141	/* queue prepare watchers (and execute them) */
1976	if (expect_false (preparecnt))	2142	if (expect_false (preparecnt))
1977	{	2143	{
1978	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2144	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1979	call_pending (EV_A);	2145	EV_INVOKE_PENDING;
1980	}	2146	}
1981		2147
1982	if (expect_false (!activecnt))	2148	if (expect_false (loop_done))
1983	break;	2149	break;
1984		2150
1985	/* we might have forked, so reify kernel state if necessary */	2151	/* we might have forked, so reify kernel state if necessary */
1986	if (expect_false (postfork))	2152	if (expect_false (postfork))
1987	loop_fork (EV_A);	2153	loop_fork (EV_A);
…		…
1994	ev_tstamp waittime = 0.;	2160	ev_tstamp waittime = 0.;
1995	ev_tstamp sleeptime = 0.;	2161	ev_tstamp sleeptime = 0.;
1996		2162
1997	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2163	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1998	{	2164	{
		2165	/* remember old timestamp for io_blocktime calculation */
		2166	ev_tstamp prev_mn_now = mn_now;
		2167
1999	/* update time to cancel out callback processing overhead */	2168	/* update time to cancel out callback processing overhead */
2000	time_update (EV_A_ 1e100);	2169	time_update (EV_A_ 1e100);
2001		2170
2002	waittime = MAX_BLOCKTIME;	2171	waittime = MAX_BLOCKTIME;
2003		2172
…		…
2013	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2182	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
2014	if (waittime > to) waittime = to;	2183	if (waittime > to) waittime = to;
2015	}	2184	}
2016	#endif	2185	#endif
2017		2186
		2187	/* don't let timeouts decrease the waittime below timeout_blocktime */
2018	if (expect_false (waittime < timeout_blocktime))	2188	if (expect_false (waittime < timeout_blocktime))
2019	waittime = timeout_blocktime;	2189	waittime = timeout_blocktime;
2020		2190
2021	sleeptime = waittime - backend_fudge;	2191	/* extra check because io_blocktime is commonly 0 */
2022
2023	if (expect_true (sleeptime > io_blocktime))	2192	if (expect_false (io_blocktime))
2024	sleeptime = io_blocktime;
2025
2026	if (sleeptime)
2027	{	2193	{
		2194	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2195
		2196	if (sleeptime > waittime - backend_fudge)
		2197	sleeptime = waittime - backend_fudge;
		2198
		2199	if (expect_true (sleeptime > 0.))
		2200	{
2028	ev_sleep (sleeptime);	2201	ev_sleep (sleeptime);
2029	waittime -= sleeptime;	2202	waittime -= sleeptime;
		2203	}
2030	}	2204	}
2031	}	2205	}
2032		2206
		2207	#if EV_MINIMAL < 2
2033	++loop_count;	2208	++loop_count;
		2209	#endif
		2210	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2034	backend_poll (EV_A_ waittime);	2211	backend_poll (EV_A_ waittime);
		2212	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2035		2213
2036	/* update ev_rt_now, do magic */	2214	/* update ev_rt_now, do magic */
2037	time_update (EV_A_ waittime + sleeptime);	2215	time_update (EV_A_ waittime + sleeptime);
2038	}	2216	}
2039		2217
…		…
2050		2228
2051	/* queue check watchers, to be executed first */	2229	/* queue check watchers, to be executed first */
2052	if (expect_false (checkcnt))	2230	if (expect_false (checkcnt))
2053	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2231	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2054		2232
2055	call_pending (EV_A);	2233	EV_INVOKE_PENDING;
2056	}	2234	}
2057	while (expect_true (	2235	while (expect_true (
2058	activecnt	2236	activecnt
2059	&& !loop_done	2237	&& !loop_done
2060	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2238	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2061	));	2239	));
2062		2240
2063	if (loop_done == EVUNLOOP_ONE)	2241	if (loop_done == EVUNLOOP_ONE)
2064	loop_done = EVUNLOOP_CANCEL;	2242	loop_done = EVUNLOOP_CANCEL;
		2243
		2244	#if EV_MINIMAL < 2
		2245	--loop_depth;
		2246	#endif
2065	}	2247	}
2066		2248
2067	void	2249	void
2068	ev_unloop (EV_P_ int how)	2250	ev_unloop (EV_P_ int how)
2069	{	2251	{
2070	loop_done = how;	2252	loop_done = how;
2071	}	2253	}
2072		2254
		2255	void
		2256	ev_ref (EV_P)
		2257	{
		2258	++activecnt;
		2259	}
		2260
		2261	void
		2262	ev_unref (EV_P)
		2263	{
		2264	--activecnt;
		2265	}
		2266
		2267	void
		2268	ev_now_update (EV_P)
		2269	{
		2270	time_update (EV_A_ 1e100);
		2271	}
		2272
		2273	void
		2274	ev_suspend (EV_P)
		2275	{
		2276	ev_now_update (EV_A);
		2277	}
		2278
		2279	void
		2280	ev_resume (EV_P)
		2281	{
		2282	ev_tstamp mn_prev = mn_now;
		2283
		2284	ev_now_update (EV_A);
		2285	timers_reschedule (EV_A_ mn_now - mn_prev);
		2286	#if EV_PERIODIC_ENABLE
		2287	/* TODO: really do this? */
		2288	periodics_reschedule (EV_A);
		2289	#endif
		2290	}
		2291
2073	/*****************************************************************************/	2292	/*****************************************************************************/
		2293	/* singly-linked list management, used when the expected list length is short */
2074		2294
2075	void inline_size	2295	inline_size void
2076	wlist_add (WL *head, WL elem)	2296	wlist_add (WL *head, WL elem)
2077	{	2297	{
2078	elem->next = *head;	2298	elem->next = *head;
2079	*head = elem;	2299	*head = elem;
2080	}	2300	}
2081		2301
2082	void inline_size	2302	inline_size void
2083	wlist_del (WL *head, WL elem)	2303	wlist_del (WL *head, WL elem)
2084	{	2304	{
2085	while (*head)	2305	while (*head)
2086	{	2306	{
2087	if (*head == elem)	2307	if (*head == elem)
…		…
2092		2312
2093	head = &(*head)->next;	2313	head = &(*head)->next;
2094	}	2314	}
2095	}	2315	}
2096		2316
2097	void inline_speed	2317	/* internal, faster, version of ev_clear_pending */
		2318	inline_speed void
2098	clear_pending (EV_P_ W w)	2319	clear_pending (EV_P_ W w)
2099	{	2320	{
2100	if (w->pending)	2321	if (w->pending)
2101	{	2322	{
2102	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2323	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2103	w->pending = 0;	2324	w->pending = 0;
2104	}	2325	}
2105	}	2326	}
2106		2327
2107	int	2328	int
…		…
2111	int pending = w_->pending;	2332	int pending = w_->pending;
2112		2333
2113	if (expect_true (pending))	2334	if (expect_true (pending))
2114	{	2335	{
2115	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2336	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2337	p->w = (W)&pending_w;
2116	w_->pending = 0;	2338	w_->pending = 0;
2117	p->w = 0;
2118	return p->events;	2339	return p->events;
2119	}	2340	}
2120	else	2341	else
2121	return 0;	2342	return 0;
2122	}	2343	}
2123		2344
2124	void inline_size	2345	inline_size void
2125	pri_adjust (EV_P_ W w)	2346	pri_adjust (EV_P_ W w)
2126	{	2347	{
2127	int pri = w->priority;	2348	int pri = ev_priority (w);
2128	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2349	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2129	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2350	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2130	w->priority = pri;	2351	ev_set_priority (w, pri);
2131	}	2352	}
2132		2353
2133	void inline_speed	2354	inline_speed void
2134	ev_start (EV_P_ W w, int active)	2355	ev_start (EV_P_ W w, int active)
2135	{	2356	{
2136	pri_adjust (EV_A_ w);	2357	pri_adjust (EV_A_ w);
2137	w->active = active;	2358	w->active = active;
2138	ev_ref (EV_A);	2359	ev_ref (EV_A);
2139	}	2360	}
2140		2361
2141	void inline_size	2362	inline_size void
2142	ev_stop (EV_P_ W w)	2363	ev_stop (EV_P_ W w)
2143	{	2364	{
2144	ev_unref (EV_A);	2365	ev_unref (EV_A);
2145	w->active = 0;	2366	w->active = 0;
2146	}	2367	}
…		…
2153	int fd = w->fd;	2374	int fd = w->fd;
2154		2375
2155	if (expect_false (ev_is_active (w)))	2376	if (expect_false (ev_is_active (w)))
2156	return;	2377	return;
2157		2378
2158	assert (("ev_io_start called with negative fd", fd >= 0));	2379	assert (("libev: ev_io_start called with negative fd", fd >= 0));
2159	assert (("ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE))));	2380	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2160		2381
2161	EV_FREQUENT_CHECK;	2382	EV_FREQUENT_CHECK;
2162		2383
2163	ev_start (EV_A_ (W)w, 1);	2384	ev_start (EV_A_ (W)w, 1);
2164	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2385	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2165	wlist_add (&anfds[fd].head, (WL)w);	2386	wlist_add (&anfds[fd].head, (WL)w);
2166		2387
2167	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2388	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2168	w->events &= ~EV_IOFDSET;	2389	w->events &= ~EV__IOFDSET;
2169		2390
2170	EV_FREQUENT_CHECK;	2391	EV_FREQUENT_CHECK;
2171	}	2392	}
2172		2393
2173	void noinline	2394	void noinline
…		…
2175	{	2396	{
2176	clear_pending (EV_A_ (W)w);	2397	clear_pending (EV_A_ (W)w);
2177	if (expect_false (!ev_is_active (w)))	2398	if (expect_false (!ev_is_active (w)))
2178	return;	2399	return;
2179		2400
2180	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2401	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2181		2402
2182	EV_FREQUENT_CHECK;	2403	EV_FREQUENT_CHECK;
2183		2404
2184	wlist_del (&anfds[w->fd].head, (WL)w);	2405	wlist_del (&anfds[w->fd].head, (WL)w);
2185	ev_stop (EV_A_ (W)w);	2406	ev_stop (EV_A_ (W)w);
…		…
2195	if (expect_false (ev_is_active (w)))	2416	if (expect_false (ev_is_active (w)))
2196	return;	2417	return;
2197		2418
2198	ev_at (w) += mn_now;	2419	ev_at (w) += mn_now;
2199		2420
2200	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2421	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2201		2422
2202	EV_FREQUENT_CHECK;	2423	EV_FREQUENT_CHECK;
2203		2424
2204	++timercnt;	2425	++timercnt;
2205	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);	2426	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
…		…
2208	ANHE_at_cache (timers [ev_active (w)]);	2429	ANHE_at_cache (timers [ev_active (w)]);
2209	upheap (timers, ev_active (w));	2430	upheap (timers, ev_active (w));
2210		2431
2211	EV_FREQUENT_CHECK;	2432	EV_FREQUENT_CHECK;
2212		2433
2213	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2434	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2214	}	2435	}
2215		2436
2216	void noinline	2437	void noinline
2217	ev_timer_stop (EV_P_ ev_timer *w)	2438	ev_timer_stop (EV_P_ ev_timer *w)
2218	{	2439	{
…		…
2223	EV_FREQUENT_CHECK;	2444	EV_FREQUENT_CHECK;
2224		2445
2225	{	2446	{
2226	int active = ev_active (w);	2447	int active = ev_active (w);
2227		2448
2228	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2449	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2229		2450
2230	--timercnt;	2451	--timercnt;
2231		2452
2232	if (expect_true (active < timercnt + HEAP0))	2453	if (expect_true (active < timercnt + HEAP0))
2233	{	2454	{
…		…
2266	}	2487	}
2267		2488
2268	EV_FREQUENT_CHECK;	2489	EV_FREQUENT_CHECK;
2269	}	2490	}
2270		2491
		2492	ev_tstamp
		2493	ev_timer_remaining (EV_P_ ev_timer *w)
		2494	{
		2495	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
		2496	}
		2497
2271	#if EV_PERIODIC_ENABLE	2498	#if EV_PERIODIC_ENABLE
2272	void noinline	2499	void noinline
2273	ev_periodic_start (EV_P_ ev_periodic *w)	2500	ev_periodic_start (EV_P_ ev_periodic *w)
2274	{	2501	{
2275	if (expect_false (ev_is_active (w)))	2502	if (expect_false (ev_is_active (w)))
…		…
2277		2504
2278	if (w->reschedule_cb)	2505	if (w->reschedule_cb)
2279	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2506	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2280	else if (w->interval)	2507	else if (w->interval)
2281	{	2508	{
2282	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2509	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2283	/* this formula differs from the one in periodic_reify because we do not always round up */	2510	/* this formula differs from the one in periodic_reify because we do not always round up */
2284	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2511	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2285	}	2512	}
2286	else	2513	else
2287	ev_at (w) = w->offset;	2514	ev_at (w) = w->offset;
…		…
2295	ANHE_at_cache (periodics [ev_active (w)]);	2522	ANHE_at_cache (periodics [ev_active (w)]);
2296	upheap (periodics, ev_active (w));	2523	upheap (periodics, ev_active (w));
2297		2524
2298	EV_FREQUENT_CHECK;	2525	EV_FREQUENT_CHECK;
2299		2526
2300	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2527	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2301	}	2528	}
2302		2529
2303	void noinline	2530	void noinline
2304	ev_periodic_stop (EV_P_ ev_periodic *w)	2531	ev_periodic_stop (EV_P_ ev_periodic *w)
2305	{	2532	{
…		…
2310	EV_FREQUENT_CHECK;	2537	EV_FREQUENT_CHECK;
2311		2538
2312	{	2539	{
2313	int active = ev_active (w);	2540	int active = ev_active (w);
2314		2541
2315	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2542	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2316		2543
2317	--periodiccnt;	2544	--periodiccnt;
2318		2545
2319	if (expect_true (active < periodiccnt + HEAP0))	2546	if (expect_true (active < periodiccnt + HEAP0))
2320	{	2547	{
…		…
2343		2570
2344	void noinline	2571	void noinline
2345	ev_signal_start (EV_P_ ev_signal *w)	2572	ev_signal_start (EV_P_ ev_signal *w)
2346	{	2573	{
2347	#if EV_MULTIPLICITY	2574	#if EV_MULTIPLICITY
2348	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2575	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2349	#endif	2576	#endif
2350	if (expect_false (ev_is_active (w)))	2577	if (expect_false (ev_is_active (w)))
2351	return;	2578	return;
2352		2579
2353	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2580	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2354		2581
2355	evpipe_init (EV_A);	2582	evpipe_init (EV_A);
2356		2583
2357	EV_FREQUENT_CHECK;	2584	EV_FREQUENT_CHECK;
2358		2585
…		…
2376	if (!((WL)w)->next)	2603	if (!((WL)w)->next)
2377	{	2604	{
2378	#if _WIN32	2605	#if _WIN32
2379	signal (w->signum, ev_sighandler);	2606	signal (w->signum, ev_sighandler);
2380	#else	2607	#else
2381	struct sigaction sa;	2608	struct sigaction sa = { };
2382	sa.sa_handler = ev_sighandler;	2609	sa.sa_handler = ev_sighandler;
2383	sigfillset (&sa.sa_mask);	2610	sigfillset (&sa.sa_mask);
2384	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2611	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2385	sigaction (w->signum, &sa, 0);	2612	sigaction (w->signum, &sa, 0);
2386	#endif	2613	#endif
…		…
2409		2636
2410	void	2637	void
2411	ev_child_start (EV_P_ ev_child *w)	2638	ev_child_start (EV_P_ ev_child *w)
2412	{	2639	{
2413	#if EV_MULTIPLICITY	2640	#if EV_MULTIPLICITY
2414	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2641	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2415	#endif	2642	#endif
2416	if (expect_false (ev_is_active (w)))	2643	if (expect_false (ev_is_active (w)))
2417	return;	2644	return;
2418		2645
2419	EV_FREQUENT_CHECK;	2646	EV_FREQUENT_CHECK;
…		…
2478	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2705	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2479	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2706	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2480		2707
2481	char *pend = strrchr (path, '/');	2708	char *pend = strrchr (path, '/');
2482		2709
2483	if (!pend)	2710	if (!pend || pend == path)
2484	break; /* whoops, no '/', complain to your admin */	2711	break;
2485		2712
2486	*pend = 0;	2713	*pend = 0;
2487	w->wd = inotify_add_watch (fs_fd, path, mask);	2714	w->wd = inotify_add_watch (fs_fd, path, mask);
2488	}	2715	}
2489	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2716	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2490	}	2717	}
2491	}	2718	}
2492	else	2719
		2720	if (w->wd >= 0)
2493	{	2721	{
2494	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2722	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2495		2723
2496	/* now local changes will be tracked by inotify, but remote changes won't */	2724	/* now local changes will be tracked by inotify, but remote changes won't */
2497	/* unless the filesystem it known to be local, we therefore still poll */	2725	/* unless the filesystem it known to be local, we therefore still poll */
…		…
2547		2775
2548	if (w->wd == wd || wd == -1)	2776	if (w->wd == wd || wd == -1)
2549	{	2777	{
2550	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2778	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2551	{	2779	{
		2780	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2552	w->wd = -1;	2781	w->wd = -1;
2553	infy_add (EV_A_ w); /* re-add, no matter what */	2782	infy_add (EV_A_ w); /* re-add, no matter what */
2554	}	2783	}
2555		2784
2556	stat_timer_cb (EV_A_ &w->timer, 0);	2785	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2569		2798
2570	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2799	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2571	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2800	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2572	}	2801	}
2573		2802
2574	void inline_size	2803	inline_size void
2575	check_2625 (EV_P)	2804	check_2625 (EV_P)
2576	{	2805	{
2577	/* kernels < 2.6.25 are borked	2806	/* kernels < 2.6.25 are borked
2578	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html	2807	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2579	*/	2808	*/
…		…
2592	return;	2821	return;
2593		2822
2594	fs_2625 = 1;	2823	fs_2625 = 1;
2595	}	2824	}
2596		2825
2597	void inline_size	2826	inline_size void
2598	infy_init (EV_P)	2827	infy_init (EV_P)
2599	{	2828	{
2600	if (fs_fd != -2)	2829	if (fs_fd != -2)
2601	return;	2830	return;
2602		2831
…		…
2612	ev_set_priority (&fs_w, EV_MAXPRI);	2841	ev_set_priority (&fs_w, EV_MAXPRI);
2613	ev_io_start (EV_A_ &fs_w);	2842	ev_io_start (EV_A_ &fs_w);
2614	}	2843	}
2615	}	2844	}
2616		2845
2617	void inline_size	2846	inline_size void
2618	infy_fork (EV_P)	2847	infy_fork (EV_P)
2619	{	2848	{
2620	int slot;	2849	int slot;
2621		2850
2622	if (fs_fd < 0)	2851	if (fs_fd < 0)
…		…
2903	static void	3132	static void
2904	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)	3133	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2905	{	3134	{
2906	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));	3135	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2907		3136
		3137	ev_embed_stop (EV_A_ w);
		3138
2908	{	3139	{
2909	struct ev_loop *loop = w->other;	3140	struct ev_loop *loop = w->other;
2910		3141
2911	ev_loop_fork (EV_A);	3142	ev_loop_fork (EV_A);
		3143	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2912	}	3144	}
		3145
		3146	ev_embed_start (EV_A_ w);
2913	}	3147	}
2914		3148
2915	#if 0	3149	#if 0
2916	static void	3150	static void
2917	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3151	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
…		…
2926	if (expect_false (ev_is_active (w)))	3160	if (expect_false (ev_is_active (w)))
2927	return;	3161	return;
2928		3162
2929	{	3163	{
2930	struct ev_loop *loop = w->other;	3164	struct ev_loop *loop = w->other;
2931	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3165	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2932	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3166	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2933	}	3167	}
2934		3168
2935	EV_FREQUENT_CHECK;	3169	EV_FREQUENT_CHECK;
2936		3170
…		…
3119	ev_timer_set (&once->to, timeout, 0.);	3353	ev_timer_set (&once->to, timeout, 0.);
3120	ev_timer_start (EV_A_ &once->to);	3354	ev_timer_start (EV_A_ &once->to);
3121	}	3355	}
3122	}	3356	}
3123		3357
		3358	/*****************************************************************************/
		3359
		3360	#if EV_WALK_ENABLE
		3361	void
		3362	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3363	{
		3364	int i, j;
		3365	ev_watcher_list *wl, *wn;
		3366
		3367	if (types & (EV_IO | EV_EMBED))
		3368	for (i = 0; i < anfdmax; ++i)
		3369	for (wl = anfds [i].head; wl; )
		3370	{
		3371	wn = wl->next;
		3372
		3373	#if EV_EMBED_ENABLE
		3374	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3375	{
		3376	if (types & EV_EMBED)
		3377	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3378	}
		3379	else
		3380	#endif
		3381	#if EV_USE_INOTIFY
		3382	if (ev_cb ((ev_io *)wl) == infy_cb)
		3383	;
		3384	else
		3385	#endif
		3386	if ((ev_io *)wl != &pipe_w)
		3387	if (types & EV_IO)
		3388	cb (EV_A_ EV_IO, wl);
		3389
		3390	wl = wn;
		3391	}
		3392
		3393	if (types & (EV_TIMER | EV_STAT))
		3394	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3395	#if EV_STAT_ENABLE
		3396	/*TODO: timer is not always active*/
		3397	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3398	{
		3399	if (types & EV_STAT)
		3400	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3401	}
		3402	else
		3403	#endif
		3404	if (types & EV_TIMER)
		3405	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3406
		3407	#if EV_PERIODIC_ENABLE
		3408	if (types & EV_PERIODIC)
		3409	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3410	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3411	#endif
		3412
		3413	#if EV_IDLE_ENABLE
		3414	if (types & EV_IDLE)
		3415	for (j = NUMPRI; i--; )
		3416	for (i = idlecnt [j]; i--; )
		3417	cb (EV_A_ EV_IDLE, idles [j][i]);
		3418	#endif
		3419
		3420	#if EV_FORK_ENABLE
		3421	if (types & EV_FORK)
		3422	for (i = forkcnt; i--; )
		3423	if (ev_cb (forks [i]) != embed_fork_cb)
		3424	cb (EV_A_ EV_FORK, forks [i]);
		3425	#endif
		3426
		3427	#if EV_ASYNC_ENABLE
		3428	if (types & EV_ASYNC)
		3429	for (i = asynccnt; i--; )
		3430	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3431	#endif
		3432
		3433	if (types & EV_PREPARE)
		3434	for (i = preparecnt; i--; )
		3435	#if EV_EMBED_ENABLE
		3436	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3437	#endif
		3438	cb (EV_A_ EV_PREPARE, prepares [i]);
		3439
		3440	if (types & EV_CHECK)
		3441	for (i = checkcnt; i--; )
		3442	cb (EV_A_ EV_CHECK, checks [i]);
		3443
		3444	if (types & EV_SIGNAL)
		3445	for (i = 0; i < signalmax; ++i)
		3446	for (wl = signals [i].head; wl; )
		3447	{
		3448	wn = wl->next;
		3449	cb (EV_A_ EV_SIGNAL, wl);
		3450	wl = wn;
		3451	}
		3452
		3453	if (types & EV_CHILD)
		3454	for (i = EV_PID_HASHSIZE; i--; )
		3455	for (wl = childs [i]; wl; )
		3456	{
		3457	wn = wl->next;
		3458	cb (EV_A_ EV_CHILD, wl);
		3459	wl = wn;
		3460	}
		3461	/* EV_STAT 0x00001000 /* stat data changed */
		3462	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3463	}
		3464	#endif
		3465
3124	#if EV_MULTIPLICITY	3466	#if EV_MULTIPLICITY
3125	#include "ev_wrap.h"	3467	#include "ev_wrap.h"
3126	#endif	3468	#endif
3127		3469
3128	#ifdef __cplusplus	3470	#ifdef __cplusplus

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