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Comparing libev/ev.c (file contents):
Revision 1.265 by root, Thu Oct 23 04:56:49 2008 UTC vs.
Revision 1.300 by root, Tue Jul 14 20:31:21 2009 UTC

1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without modifica-	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* tion, are permitted provided that the following conditions are met:	8	* tion, are permitted provided that the following conditions are met:
9	*	9	*
…		…
47	# include EV_CONFIG_H	47	# include EV_CONFIG_H
48	# else	48	# else
49	# include "config.h"	49	# include "config.h"
50	# endif	50	# endif
51		51
		52	# if HAVE_CLOCK_SYSCALL
		53	# ifndef EV_USE_CLOCK_SYSCALL
		54	# define EV_USE_CLOCK_SYSCALL 1
		55	# ifndef EV_USE_REALTIME
		56	# define EV_USE_REALTIME 0
		57	# endif
		58	# ifndef EV_USE_MONOTONIC
		59	# define EV_USE_MONOTONIC 1
		60	# endif
		61	# endif
		62	# elif !defined(EV_USE_CLOCK_SYSCALL)
		63	# define EV_USE_CLOCK_SYSCALL 0
		64	# endif
		65
52	# if HAVE_CLOCK_GETTIME	66	# if HAVE_CLOCK_GETTIME
53	# ifndef EV_USE_MONOTONIC	67	# ifndef EV_USE_MONOTONIC
54	# define EV_USE_MONOTONIC 1	68	# define EV_USE_MONOTONIC 1
55	# endif	69	# endif
56	# ifndef EV_USE_REALTIME	70	# ifndef EV_USE_REALTIME
57	# define EV_USE_REALTIME 1	71	# define EV_USE_REALTIME 0
58	# endif	72	# endif
59	# else	73	# else
60	# ifndef EV_USE_MONOTONIC	74	# ifndef EV_USE_MONOTONIC
61	# define EV_USE_MONOTONIC 0	75	# define EV_USE_MONOTONIC 0
62	# endif	76	# endif
…		…
164	# endif	178	# endif
165	#endif	179	#endif
166		180
167	/* this block tries to deduce configuration from header-defined symbols and defaults */	181	/* this block tries to deduce configuration from header-defined symbols and defaults */
168		182
		183	#ifndef EV_USE_CLOCK_SYSCALL
		184	# if __linux && __GLIBC__ >= 2
		185	# define EV_USE_CLOCK_SYSCALL 1
		186	# else
		187	# define EV_USE_CLOCK_SYSCALL 0
		188	# endif
		189	#endif
		190
169	#ifndef EV_USE_MONOTONIC	191	#ifndef EV_USE_MONOTONIC
170	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0	192	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
171	# define EV_USE_MONOTONIC 1	193	# define EV_USE_MONOTONIC 1
172	# else	194	# else
173	# define EV_USE_MONOTONIC 0	195	# define EV_USE_MONOTONIC 0
174	# endif	196	# endif
175	#endif	197	#endif
176		198
177	#ifndef EV_USE_REALTIME	199	#ifndef EV_USE_REALTIME
178	# define EV_USE_REALTIME 0	200	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
179	#endif	201	#endif
180		202
181	#ifndef EV_USE_NANOSLEEP	203	#ifndef EV_USE_NANOSLEEP
182	# if _POSIX_C_SOURCE >= 199309L	204	# if _POSIX_C_SOURCE >= 199309L
183	# define EV_USE_NANOSLEEP 1	205	# define EV_USE_NANOSLEEP 1
…		…
262		284
263	#ifndef EV_HEAP_CACHE_AT	285	#ifndef EV_HEAP_CACHE_AT
264	# define EV_HEAP_CACHE_AT !EV_MINIMAL	286	# define EV_HEAP_CACHE_AT !EV_MINIMAL
265	#endif	287	#endif
266		288
		289	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		290	/* which makes programs even slower. might work on other unices, too. */
		291	#if EV_USE_CLOCK_SYSCALL
		292	# include <syscall.h>
		293	# ifdef SYS_clock_gettime
		294	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		295	# undef EV_USE_MONOTONIC
		296	# define EV_USE_MONOTONIC 1
		297	# else
		298	# undef EV_USE_CLOCK_SYSCALL
		299	# define EV_USE_CLOCK_SYSCALL 0
		300	# endif
		301	#endif
		302
267	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	303	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
268		304
269	#ifndef CLOCK_MONOTONIC	305	#ifndef CLOCK_MONOTONIC
270	# undef EV_USE_MONOTONIC	306	# undef EV_USE_MONOTONIC
271	# define EV_USE_MONOTONIC 0	307	# define EV_USE_MONOTONIC 0
…		…
287	# endif	323	# endif
288	#endif	324	#endif
289		325
290	#if EV_USE_INOTIFY	326	#if EV_USE_INOTIFY
291	# include <sys/utsname.h>	327	# include <sys/utsname.h>
		328	# include <sys/statfs.h>
292	# include <sys/inotify.h>	329	# include <sys/inotify.h>
293	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */	330	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
294	# ifndef IN_DONT_FOLLOW	331	# ifndef IN_DONT_FOLLOW
295	# undef EV_USE_INOTIFY	332	# undef EV_USE_INOTIFY
296	# define EV_USE_INOTIFY 0	333	# define EV_USE_INOTIFY 0
…		…
354	# define inline_speed static noinline	391	# define inline_speed static noinline
355	#else	392	#else
356	# define inline_speed static inline	393	# define inline_speed static inline
357	#endif	394	#endif
358		395
359	#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
360	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	401	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		402	#endif
361		403
362	#define EMPTY /* required for microsofts broken pseudo-c compiler */	404	#define EMPTY /* required for microsofts broken pseudo-c compiler */
363	#define EMPTY2(a,b) /* used to suppress some warnings */	405	#define EMPTY2(a,b) /* used to suppress some warnings */
364		406
365	typedef ev_watcher *W;	407	typedef ev_watcher *W;
…		…
367	typedef ev_watcher_time *WT;	409	typedef ev_watcher_time *WT;
368		410
369	#define ev_active(w) ((W)(w))->active	411	#define ev_active(w) ((W)(w))->active
370	#define ev_at(w) ((WT)(w))->at	412	#define ev_at(w) ((WT)(w))->at
371		413
372	#if EV_USE_MONOTONIC	414	#if EV_USE_REALTIME
373	/* 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 */
374	/* 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
375	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? */
376	#endif	422	#endif
377		423
378	#ifdef _WIN32	424	#ifdef _WIN32
379	# include "ev_win32.c"	425	# include "ev_win32.c"
…		…
388	{	434	{
389	syserr_cb = cb;	435	syserr_cb = cb;
390	}	436	}
391		437
392	static void noinline	438	static void noinline
393	syserr (const char *msg)	439	ev_syserr (const char *msg)
394	{	440	{
395	if (!msg)	441	if (!msg)
396	msg = "(libev) system error";	442	msg = "(libev) system error";
397		443
398	if (syserr_cb)	444	if (syserr_cb)
…		…
444	#define ev_malloc(size) ev_realloc (0, (size))	490	#define ev_malloc(size) ev_realloc (0, (size))
445	#define ev_free(ptr) ev_realloc ((ptr), 0)	491	#define ev_free(ptr) ev_realloc ((ptr), 0)
446		492
447	/*****************************************************************************/	493	/*****************************************************************************/
448		494
		495	/* set in reify when reification needed */
		496	#define EV_ANFD_REIFY 1
		497
		498	/* file descriptor info structure */
449	typedef struct	499	typedef struct
450	{	500	{
451	WL head;	501	WL head;
452	unsigned char events;	502	unsigned char events; /* the events watched for */
453	unsigned char reify;	503	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
454	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 */
455	unsigned char unused; /* currently unused padding */	505	unsigned char unused;
		506	#if EV_USE_EPOLL
		507	unsigned int egen; /* generation counter to counter epoll bugs */
		508	#endif
456	#if EV_SELECT_IS_WINSOCKET	509	#if EV_SELECT_IS_WINSOCKET
457	SOCKET handle;	510	SOCKET handle;
458	#endif	511	#endif
459	} ANFD;	512	} ANFD;
460		513
		514	/* stores the pending event set for a given watcher */
461	typedef struct	515	typedef struct
462	{	516	{
463	W w;	517	W w;
464	int events;	518	int events; /* the pending event set for the given watcher */
465	} ANPENDING;	519	} ANPENDING;
466		520
467	#if EV_USE_INOTIFY	521	#if EV_USE_INOTIFY
468	/* hash table entry per inotify-id */	522	/* hash table entry per inotify-id */
469	typedef struct	523	typedef struct
…		…
472	} ANFS;	526	} ANFS;
473	#endif	527	#endif
474		528
475	/* Heap Entry */	529	/* Heap Entry */
476	#if EV_HEAP_CACHE_AT	530	#if EV_HEAP_CACHE_AT
		531	/* a heap element */
477	typedef struct {	532	typedef struct {
478	ev_tstamp at;	533	ev_tstamp at;
479	WT w;	534	WT w;
480	} ANHE;	535	} ANHE;
481		536
482	#define ANHE_w(he) (he).w /* access watcher, read-write */	537	#define ANHE_w(he) (he).w /* access watcher, read-write */
483	#define ANHE_at(he) (he).at /* access cached at, read-only */	538	#define ANHE_at(he) (he).at /* access cached at, read-only */
484	#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 */
485	#else	540	#else
		541	/* a heap element */
486	typedef WT ANHE;	542	typedef WT ANHE;
487		543
488	#define ANHE_w(he) (he)	544	#define ANHE_w(he) (he)
489	#define ANHE_at(he) (he)->at	545	#define ANHE_at(he) (he)->at
490	#define ANHE_at_cache(he)	546	#define ANHE_at_cache(he)
…		…
514		570
515	static int ev_default_loop_ptr;	571	static int ev_default_loop_ptr;
516		572
517	#endif	573	#endif
518		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
519	/*****************************************************************************/	587	/*****************************************************************************/
520		588
		589	#ifndef EV_HAVE_EV_TIME
521	ev_tstamp	590	ev_tstamp
522	ev_time (void)	591	ev_time (void)
523	{	592	{
524	#if EV_USE_REALTIME	593	#if EV_USE_REALTIME
		594	if (expect_true (have_realtime))
		595	{
525	struct timespec ts;	596	struct timespec ts;
526	clock_gettime (CLOCK_REALTIME, &ts);	597	clock_gettime (CLOCK_REALTIME, &ts);
527	return ts.tv_sec + ts.tv_nsec * 1e-9;	598	return ts.tv_sec + ts.tv_nsec * 1e-9;
528	#else	599	}
		600	#endif
		601
529	struct timeval tv;	602	struct timeval tv;
530	gettimeofday (&tv, 0);	603	gettimeofday (&tv, 0);
531	return tv.tv_sec + tv.tv_usec * 1e-6;	604	return tv.tv_sec + tv.tv_usec * 1e-6;
532	#endif
533	}	605	}
		606	#endif
534		607
535	ev_tstamp inline_size	608	inline_size ev_tstamp
536	get_clock (void)	609	get_clock (void)
537	{	610	{
538	#if EV_USE_MONOTONIC	611	#if EV_USE_MONOTONIC
539	if (expect_true (have_monotonic))	612	if (expect_true (have_monotonic))
540	{	613	{
…		…
574		647
575	tv.tv_sec = (time_t)delay;	648	tv.tv_sec = (time_t)delay;
576	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	649	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
577		650
578	/* 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 */
579	/* somehting nto guaranteed by newer posix versions, but guaranteed */	652	/* somehting not guaranteed by newer posix versions, but guaranteed */
580	/* by older ones */	653	/* by older ones */
581	select (0, 0, 0, 0, &tv);	654	select (0, 0, 0, 0, &tv);
582	#endif	655	#endif
583	}	656	}
584	}	657	}
585		658
586	/*****************************************************************************/	659	/*****************************************************************************/
587		660
588	#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 */
589		662
590	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
591	array_nextsize (int elem, int cur, int cnt)	666	array_nextsize (int elem, int cur, int cnt)
592	{	667	{
593	int ncur = cur + 1;	668	int ncur = cur + 1;
594		669
595	do	670	do
…		…
636	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	711	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
637	}	712	}
638	#endif	713	#endif
639		714
640	#define array_free(stem, idx) \	715	#define array_free(stem, idx) \
641	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
642		717
643	/*****************************************************************************/	718	/*****************************************************************************/
		719
		720	/* dummy callback for pending events */
		721	static void noinline
		722	pendingcb (EV_P_ ev_prepare *w, int revents)
		723	{
		724	}
644		725
645	void noinline	726	void noinline
646	ev_feed_event (EV_P_ void *w, int revents)	727	ev_feed_event (EV_P_ void *w, int revents)
647	{	728	{
648	W w_ = (W)w;	729	W w_ = (W)w;
…		…
657	pendings [pri][w_->pending - 1].w = w_;	738	pendings [pri][w_->pending - 1].w = w_;
658	pendings [pri][w_->pending - 1].events = revents;	739	pendings [pri][w_->pending - 1].events = revents;
659	}	740	}
660	}	741	}
661		742
662	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
663	queue_events (EV_P_ W *events, int eventcnt, int type)	759	queue_events (EV_P_ W *events, int eventcnt, int type)
664	{	760	{
665	int i;	761	int i;
666		762
667	for (i = 0; i < eventcnt; ++i)	763	for (i = 0; i < eventcnt; ++i)
668	ev_feed_event (EV_A_ events [i], type);	764	ev_feed_event (EV_A_ events [i], type);
669	}	765	}
670		766
671	/*****************************************************************************/	767	/*****************************************************************************/
672		768
673	void inline_speed	769	inline_speed void
674	fd_event (EV_P_ int fd, int revents)	770	fd_event_nc (EV_P_ int fd, int revents)
675	{	771	{
676	ANFD *anfd = anfds + fd;	772	ANFD *anfd = anfds + fd;
677	ev_io *w;	773	ev_io *w;
678		774
679	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)
…		…
683	if (ev)	779	if (ev)
684	ev_feed_event (EV_A_ (W)w, ev);	780	ev_feed_event (EV_A_ (W)w, ev);
685	}	781	}
686	}	782	}
687		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
688	void	795	void
689	ev_feed_fd_event (EV_P_ int fd, int revents)	796	ev_feed_fd_event (EV_P_ int fd, int revents)
690	{	797	{
691	if (fd >= 0 && fd < anfdmax)	798	if (fd >= 0 && fd < anfdmax)
692	fd_event (EV_A_ fd, revents);	799	fd_event_nc (EV_A_ fd, revents);
693	}	800	}
694		801
695	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
696	fd_reify (EV_P)	805	fd_reify (EV_P)
697	{	806	{
698	int i;	807	int i;
699		808
700	for (i = 0; i < fdchangecnt; ++i)	809	for (i = 0; i < fdchangecnt; ++i)
…		…
715	#ifdef EV_FD_TO_WIN32_HANDLE	824	#ifdef EV_FD_TO_WIN32_HANDLE
716	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	825	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
717	#else	826	#else
718	anfd->handle = _get_osfhandle (fd);	827	anfd->handle = _get_osfhandle (fd);
719	#endif	828	#endif
720	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));
721	}	830	}
722	#endif	831	#endif
723		832
724	{	833	{
725	unsigned char o_events = anfd->events;	834	unsigned char o_events = anfd->events;
726	unsigned char o_reify = anfd->reify;	835	unsigned char o_reify = anfd->reify;
727		836
728	anfd->reify = 0;	837	anfd->reify = 0;
729	anfd->events = events;	838	anfd->events = events;
730		839
731	if (o_events != events || o_reify & EV_IOFDSET)	840	if (o_events != events || o_reify & EV__IOFDSET)
732	backend_modify (EV_A_ fd, o_events, events);	841	backend_modify (EV_A_ fd, o_events, events);
733	}	842	}
734	}	843	}
735		844
736	fdchangecnt = 0;	845	fdchangecnt = 0;
737	}	846	}
738		847
739	void inline_size	848	/* something about the given fd changed */
		849	inline_size void
740	fd_change (EV_P_ int fd, int flags)	850	fd_change (EV_P_ int fd, int flags)
741	{	851	{
742	unsigned char reify = anfds [fd].reify;	852	unsigned char reify = anfds [fd].reify;
743	anfds [fd].reify |= flags;	853	anfds [fd].reify |= flags;
744		854
…		…
748	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	858	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
749	fdchanges [fdchangecnt - 1] = fd;	859	fdchanges [fdchangecnt - 1] = fd;
750	}	860	}
751	}	861	}
752		862
753	void inline_speed	863	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		864	inline_speed void
754	fd_kill (EV_P_ int fd)	865	fd_kill (EV_P_ int fd)
755	{	866	{
756	ev_io *w;	867	ev_io *w;
757		868
758	while ((w = (ev_io *)anfds [fd].head))	869	while ((w = (ev_io *)anfds [fd].head))
…		…
760	ev_io_stop (EV_A_ w);	871	ev_io_stop (EV_A_ w);
761	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);
762	}	873	}
763	}	874	}
764		875
765	int inline_size	876	/* check whether the given fd is atcually valid, for error recovery */
		877	inline_size int
766	fd_valid (int fd)	878	fd_valid (int fd)
767	{	879	{
768	#ifdef _WIN32	880	#ifdef _WIN32
769	return _get_osfhandle (fd) != -1;	881	return _get_osfhandle (fd) != -1;
770	#else	882	#else
…		…
806		918
807	for (fd = 0; fd < anfdmax; ++fd)	919	for (fd = 0; fd < anfdmax; ++fd)
808	if (anfds [fd].events)	920	if (anfds [fd].events)
809	{	921	{
810	anfds [fd].events = 0;	922	anfds [fd].events = 0;
		923	anfds [fd].emask = 0;
811	fd_change (EV_A_ fd, EV_IOFDSET | 1);	924	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
812	}	925	}
813	}	926	}
814		927
815	/*****************************************************************************/	928	/*****************************************************************************/
816		929
…		…
832	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	945	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
833	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)	946	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
834	#define UPHEAP_DONE(p,k) ((p) == (k))	947	#define UPHEAP_DONE(p,k) ((p) == (k))
835		948
836	/* away from the root */	949	/* away from the root */
837	void inline_speed	950	inline_speed void
838	downheap (ANHE *heap, int N, int k)	951	downheap (ANHE *heap, int N, int k)
839	{	952	{
840	ANHE he = heap [k];	953	ANHE he = heap [k];
841	ANHE *E = heap + N + HEAP0;	954	ANHE *E = heap + N + HEAP0;
842		955
…		…
882	#define HEAP0 1	995	#define HEAP0 1
883	#define HPARENT(k) ((k) >> 1)	996	#define HPARENT(k) ((k) >> 1)
884	#define UPHEAP_DONE(p,k) (!(p))	997	#define UPHEAP_DONE(p,k) (!(p))
885		998
886	/* away from the root */	999	/* away from the root */
887	void inline_speed	1000	inline_speed void
888	downheap (ANHE *heap, int N, int k)	1001	downheap (ANHE *heap, int N, int k)
889	{	1002	{
890	ANHE he = heap [k];	1003	ANHE he = heap [k];
891		1004
892	for (;;)	1005	for (;;)
…		…
912	ev_active (ANHE_w (he)) = k;	1025	ev_active (ANHE_w (he)) = k;
913	}	1026	}
914	#endif	1027	#endif
915		1028
916	/* towards the root */	1029	/* towards the root */
917	void inline_speed	1030	inline_speed void
918	upheap (ANHE *heap, int k)	1031	upheap (ANHE *heap, int k)
919	{	1032	{
920	ANHE he = heap [k];	1033	ANHE he = heap [k];
921		1034
922	for (;;)	1035	for (;;)
…		…
933		1046
934	heap [k] = he;	1047	heap [k] = he;
935	ev_active (ANHE_w (he)) = k;	1048	ev_active (ANHE_w (he)) = k;
936	}	1049	}
937		1050
938	void inline_size	1051	/* move an element suitably so it is in a correct place */
		1052	inline_size void
939	adjustheap (ANHE *heap, int N, int k)	1053	adjustheap (ANHE *heap, int N, int k)
940	{	1054	{
941	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]))
942	upheap (heap, k);	1056	upheap (heap, k);
943	else	1057	else
944	downheap (heap, N, k);	1058	downheap (heap, N, k);
945	}	1059	}
946		1060
947	/* 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 */
948	void inline_size	1062	inline_size void
949	reheap (ANHE *heap, int N)	1063	reheap (ANHE *heap, int N)
950	{	1064	{
951	int i;	1065	int i;
952		1066
953	/* 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 */
…		…
956	upheap (heap, i + HEAP0);	1070	upheap (heap, i + HEAP0);
957	}	1071	}
958		1072
959	/*****************************************************************************/	1073	/*****************************************************************************/
960		1074
		1075	/* associate signal watchers to a signal signal */
961	typedef struct	1076	typedef struct
962	{	1077	{
963	WL head;	1078	WL head;
964	EV_ATOMIC_T gotsig;	1079	EV_ATOMIC_T gotsig;
965	} ANSIG;	1080	} ANSIG;
…		…
969		1084
970	static EV_ATOMIC_T gotsig;	1085	static EV_ATOMIC_T gotsig;
971		1086
972	/*****************************************************************************/	1087	/*****************************************************************************/
973		1088
974	void inline_speed	1089	/* used to prepare libev internal fd's */
		1090	/* this is not fork-safe */
		1091	inline_speed void
975	fd_intern (int fd)	1092	fd_intern (int fd)
976	{	1093	{
977	#ifdef _WIN32	1094	#ifdef _WIN32
978	unsigned long arg = 1;	1095	unsigned long arg = 1;
979	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1096	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
984	}	1101	}
985		1102
986	static void noinline	1103	static void noinline
987	evpipe_init (EV_P)	1104	evpipe_init (EV_P)
988	{	1105	{
989	if (!ev_is_active (&pipeev))	1106	if (!ev_is_active (&pipe_w))
990	{	1107	{
991	#if EV_USE_EVENTFD	1108	#if EV_USE_EVENTFD
992	if ((evfd = eventfd (0, 0)) >= 0)	1109	if ((evfd = eventfd (0, 0)) >= 0)
993	{	1110	{
994	evpipe [0] = -1;	1111	evpipe [0] = -1;
995	fd_intern (evfd);	1112	fd_intern (evfd);
996	ev_io_set (&pipeev, evfd, EV_READ);	1113	ev_io_set (&pipe_w, evfd, EV_READ);
997	}	1114	}
998	else	1115	else
999	#endif	1116	#endif
1000	{	1117	{
1001	while (pipe (evpipe))	1118	while (pipe (evpipe))
1002	syserr ("(libev) error creating signal/async pipe");	1119	ev_syserr ("(libev) error creating signal/async pipe");
1003		1120
1004	fd_intern (evpipe [0]);	1121	fd_intern (evpipe [0]);
1005	fd_intern (evpipe [1]);	1122	fd_intern (evpipe [1]);
1006	ev_io_set (&pipeev, evpipe [0], EV_READ);	1123	ev_io_set (&pipe_w, evpipe [0], EV_READ);
1007	}	1124	}
1008		1125
1009	ev_io_start (EV_A_ &pipeev);	1126	ev_io_start (EV_A_ &pipe_w);
1010	ev_unref (EV_A); /* watcher should not keep loop alive */	1127	ev_unref (EV_A); /* watcher should not keep loop alive */
1011	}	1128	}
1012	}	1129	}
1013		1130
1014	void inline_size	1131	inline_size void
1015	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1132	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1016	{	1133	{
1017	if (!*flag)	1134	if (!*flag)
1018	{	1135	{
1019	int old_errno = errno; /* save errno because write might clobber it */	1136	int old_errno = errno; /* save errno because write might clobber it */
…		…
1032		1149
1033	errno = old_errno;	1150	errno = old_errno;
1034	}	1151	}
1035	}	1152	}
1036		1153
		1154	/* called whenever the libev signal pipe */
		1155	/* got some events (signal, async) */
1037	static void	1156	static void
1038	pipecb (EV_P_ ev_io *iow, int revents)	1157	pipecb (EV_P_ ev_io *iow, int revents)
1039	{	1158	{
1040	#if EV_USE_EVENTFD	1159	#if EV_USE_EVENTFD
1041	if (evfd >= 0)	1160	if (evfd >= 0)
…		…
1097	ev_feed_signal_event (EV_P_ int signum)	1216	ev_feed_signal_event (EV_P_ int signum)
1098	{	1217	{
1099	WL w;	1218	WL w;
1100		1219
1101	#if EV_MULTIPLICITY	1220	#if EV_MULTIPLICITY
1102	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));
1103	#endif	1222	#endif
1104		1223
1105	--signum;	1224	--signum;
1106		1225
1107	if (signum < 0 || signum >= signalmax)	1226	if (signum < 0 || signum >= signalmax)
…		…
1123		1242
1124	#ifndef WIFCONTINUED	1243	#ifndef WIFCONTINUED
1125	# define WIFCONTINUED(status) 0	1244	# define WIFCONTINUED(status) 0
1126	#endif	1245	#endif
1127		1246
1128	void inline_speed	1247	/* handle a single child status event */
		1248	inline_speed void
1129	child_reap (EV_P_ int chain, int pid, int status)	1249	child_reap (EV_P_ int chain, int pid, int status)
1130	{	1250	{
1131	ev_child *w;	1251	ev_child *w;
1132	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1252	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1133		1253
…		…
1146		1266
1147	#ifndef WCONTINUED	1267	#ifndef WCONTINUED
1148	# define WCONTINUED 0	1268	# define WCONTINUED 0
1149	#endif	1269	#endif
1150		1270
		1271	/* called on sigchld etc., calls waitpid */
1151	static void	1272	static void
1152	childcb (EV_P_ ev_signal *sw, int revents)	1273	childcb (EV_P_ ev_signal *sw, int revents)
1153	{	1274	{
1154	int pid, status;	1275	int pid, status;
1155		1276
…		…
1236	/* kqueue is borked on everything but netbsd apparently */	1357	/* kqueue is borked on everything but netbsd apparently */
1237	/* 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 */
1238	flags &= ~EVBACKEND_KQUEUE;	1359	flags &= ~EVBACKEND_KQUEUE;
1239	#endif	1360	#endif
1240	#ifdef __APPLE__	1361	#ifdef __APPLE__
1241	// flags &= ~EVBACKEND_KQUEUE; for documentation	1362	/* only select works correctly on that "unix-certified" platform */
1242	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 */
1243	#endif	1365	#endif
1244		1366
1245	return flags;	1367	return flags;
1246	}	1368	}
1247		1369
…		…
1261	ev_backend (EV_P)	1383	ev_backend (EV_P)
1262	{	1384	{
1263	return backend;	1385	return backend;
1264	}	1386	}
1265		1387
		1388	#if EV_MINIMAL < 2
1266	unsigned int	1389	unsigned int
1267	ev_loop_count (EV_P)	1390	ev_loop_count (EV_P)
1268	{	1391	{
1269	return loop_count;	1392	return loop_count;
1270	}	1393	}
1271		1394
		1395	unsigned int
		1396	ev_loop_depth (EV_P)
		1397	{
		1398	return loop_depth;
		1399	}
		1400
1272	void	1401	void
1273	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1402	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1274	{	1403	{
1275	io_blocktime = interval;	1404	io_blocktime = interval;
1276	}	1405	}
…		…
1279	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1408	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1280	{	1409	{
1281	timeout_blocktime = interval;	1410	timeout_blocktime = interval;
1282	}	1411	}
1283		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 */
1284	static void noinline	1438	static void noinline
1285	loop_init (EV_P_ unsigned int flags)	1439	loop_init (EV_P_ unsigned int flags)
1286	{	1440	{
1287	if (!backend)	1441	if (!backend)
1288	{	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
1289	#if EV_USE_MONOTONIC	1453	#if EV_USE_MONOTONIC
		1454	if (!have_monotonic)
1290	{	1455	{
1291	struct timespec ts;	1456	struct timespec ts;
		1457
1292	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1458	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1293	have_monotonic = 1;	1459	have_monotonic = 1;
1294	}	1460	}
1295	#endif	1461	#endif
1296		1462
1297	ev_rt_now = ev_time ();	1463	ev_rt_now = ev_time ();
1298	mn_now = get_clock ();	1464	mn_now = get_clock ();
1299	now_floor = mn_now;	1465	now_floor = mn_now;
1300	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
1301		1470
1302	io_blocktime = 0.;	1471	io_blocktime = 0.;
1303	timeout_blocktime = 0.;	1472	timeout_blocktime = 0.;
1304	backend = 0;	1473	backend = 0;
1305	backend_fd = -1;	1474	backend_fd = -1;
…		…
1336	#endif	1505	#endif
1337	#if EV_USE_SELECT	1506	#if EV_USE_SELECT
1338	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1507	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1339	#endif	1508	#endif
1340		1509
		1510	ev_prepare_init (&pending_w, pendingcb);
		1511
1341	ev_init (&pipeev, pipecb);	1512	ev_init (&pipe_w, pipecb);
1342	ev_set_priority (&pipeev, EV_MAXPRI);	1513	ev_set_priority (&pipe_w, EV_MAXPRI);
1343	}	1514	}
1344	}	1515	}
1345		1516
		1517	/* free up a loop structure */
1346	static void noinline	1518	static void noinline
1347	loop_destroy (EV_P)	1519	loop_destroy (EV_P)
1348	{	1520	{
1349	int i;	1521	int i;
1350		1522
1351	if (ev_is_active (&pipeev))	1523	if (ev_is_active (&pipe_w))
1352	{	1524	{
1353	ev_ref (EV_A); /* signal watcher */	1525	ev_ref (EV_A); /* signal watcher */
1354	ev_io_stop (EV_A_ &pipeev);	1526	ev_io_stop (EV_A_ &pipe_w);
1355		1527
1356	#if EV_USE_EVENTFD	1528	#if EV_USE_EVENTFD
1357	if (evfd >= 0)	1529	if (evfd >= 0)
1358	close (evfd);	1530	close (evfd);
1359	#endif	1531	#endif
…		…
1398	}	1570	}
1399		1571
1400	ev_free (anfds); anfdmax = 0;	1572	ev_free (anfds); anfdmax = 0;
1401		1573
1402	/* 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);
1403	array_free (fdchange, EMPTY);	1576	array_free (fdchange, EMPTY);
1404	array_free (timer, EMPTY);	1577	array_free (timer, EMPTY);
1405	#if EV_PERIODIC_ENABLE	1578	#if EV_PERIODIC_ENABLE
1406	array_free (periodic, EMPTY);	1579	array_free (periodic, EMPTY);
1407	#endif	1580	#endif
…		…
1416		1589
1417	backend = 0;	1590	backend = 0;
1418	}	1591	}
1419		1592
1420	#if EV_USE_INOTIFY	1593	#if EV_USE_INOTIFY
1421	void inline_size infy_fork (EV_P);	1594	inline_size void infy_fork (EV_P);
1422	#endif	1595	#endif
1423		1596
1424	void inline_size	1597	inline_size void
1425	loop_fork (EV_P)	1598	loop_fork (EV_P)
1426	{	1599	{
1427	#if EV_USE_PORT	1600	#if EV_USE_PORT
1428	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1601	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1429	#endif	1602	#endif
…		…
1435	#endif	1608	#endif
1436	#if EV_USE_INOTIFY	1609	#if EV_USE_INOTIFY
1437	infy_fork (EV_A);	1610	infy_fork (EV_A);
1438	#endif	1611	#endif
1439		1612
1440	if (ev_is_active (&pipeev))	1613	if (ev_is_active (&pipe_w))
1441	{	1614	{
1442	/* this "locks" the handlers against writing to the pipe */	1615	/* this "locks" the handlers against writing to the pipe */
1443	/* while we modify the fd vars */	1616	/* while we modify the fd vars */
1444	gotsig = 1;	1617	gotsig = 1;
1445	#if EV_ASYNC_ENABLE	1618	#if EV_ASYNC_ENABLE
1446	gotasync = 1;	1619	gotasync = 1;
1447	#endif	1620	#endif
1448		1621
1449	ev_ref (EV_A);	1622	ev_ref (EV_A);
1450	ev_io_stop (EV_A_ &pipeev);	1623	ev_io_stop (EV_A_ &pipe_w);
1451		1624
1452	#if EV_USE_EVENTFD	1625	#if EV_USE_EVENTFD
1453	if (evfd >= 0)	1626	if (evfd >= 0)
1454	close (evfd);	1627	close (evfd);
1455	#endif	1628	#endif
…		…
1460	close (evpipe [1]);	1633	close (evpipe [1]);
1461	}	1634	}
1462		1635
1463	evpipe_init (EV_A);	1636	evpipe_init (EV_A);
1464	/* now iterate over everything, in case we missed something */	1637	/* now iterate over everything, in case we missed something */
1465	pipecb (EV_A_ &pipeev, EV_READ);	1638	pipecb (EV_A_ &pipe_w, EV_READ);
1466	}	1639	}
1467		1640
1468	postfork = 0;	1641	postfork = 0;
1469	}	1642	}
1470		1643
…		…
1495	void	1668	void
1496	ev_loop_fork (EV_P)	1669	ev_loop_fork (EV_P)
1497	{	1670	{
1498	postfork = 1; /* must be in line with ev_default_fork */	1671	postfork = 1; /* must be in line with ev_default_fork */
1499	}	1672	}
		1673	#endif /* multiplicity */
1500		1674
1501	#if EV_VERIFY	1675	#if EV_VERIFY
1502	static void noinline	1676	static void noinline
1503	verify_watcher (EV_P_ W w)	1677	verify_watcher (EV_P_ W w)
1504	{	1678	{
1505	assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));	1679	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1506		1680
1507	if (w->pending)	1681	if (w->pending)
1508	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));
1509	}	1683	}
1510		1684
1511	static void noinline	1685	static void noinline
1512	verify_heap (EV_P_ ANHE *heap, int N)	1686	verify_heap (EV_P_ ANHE *heap, int N)
1513	{	1687	{
1514	int i;	1688	int i;
1515		1689
1516	for (i = HEAP0; i < N + HEAP0; ++i)	1690	for (i = HEAP0; i < N + HEAP0; ++i)
1517	{	1691	{
1518	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));
1519	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])));
1520	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]))));
1521		1695
1522	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));	1696	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1523	}	1697	}
1524	}	1698	}
1525		1699
1526	static void noinline	1700	static void noinline
1527	array_verify (EV_P_ W *ws, int cnt)	1701	array_verify (EV_P_ W *ws, int cnt)
1528	{	1702	{
1529	while (cnt--)	1703	while (cnt--)
1530	{	1704	{
1531	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));	1705	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1532	verify_watcher (EV_A_ ws [cnt]);	1706	verify_watcher (EV_A_ ws [cnt]);
1533	}	1707	}
1534	}	1708	}
1535	#endif	1709	#endif
1536		1710
		1711	#if EV_MINIMAL < 2
1537	void	1712	void
1538	ev_loop_verify (EV_P)	1713	ev_loop_verify (EV_P)
1539	{	1714	{
1540	#if EV_VERIFY	1715	#if EV_VERIFY
1541	int i;	1716	int i;
…		…
1543		1718
1544	assert (activecnt >= -1);	1719	assert (activecnt >= -1);
1545		1720
1546	assert (fdchangemax >= fdchangecnt);	1721	assert (fdchangemax >= fdchangecnt);
1547	for (i = 0; i < fdchangecnt; ++i)	1722	for (i = 0; i < fdchangecnt; ++i)
1548	assert (("negative fd in fdchanges", fdchanges [i] >= 0));	1723	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1549		1724
1550	assert (anfdmax >= 0);	1725	assert (anfdmax >= 0);
1551	for (i = 0; i < anfdmax; ++i)	1726	for (i = 0; i < anfdmax; ++i)
1552	for (w = anfds [i].head; w; w = w->next)	1727	for (w = anfds [i].head; w; w = w->next)
1553	{	1728	{
1554	verify_watcher (EV_A_ (W)w);	1729	verify_watcher (EV_A_ (W)w);
1555	assert (("inactive fd watcher on anfd list", ev_active (w) == 1));	1730	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1556	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));
1557	}	1732	}
1558		1733
1559	assert (timermax >= timercnt);	1734	assert (timermax >= timercnt);
1560	verify_heap (EV_A_ timers, timercnt);	1735	verify_heap (EV_A_ timers, timercnt);
1561		1736
…		…
1594	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)
1595	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)	1770	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1596	# endif	1771	# endif
1597	#endif	1772	#endif
1598	}	1773	}
1599		1774	#endif
1600	#endif /* multiplicity */
1601		1775
1602	#if EV_MULTIPLICITY	1776	#if EV_MULTIPLICITY
1603	struct ev_loop *	1777	struct ev_loop *
1604	ev_default_loop_init (unsigned int flags)	1778	ev_default_loop_init (unsigned int flags)
1605	#else	1779	#else
…		…
1638	{	1812	{
1639	#if EV_MULTIPLICITY	1813	#if EV_MULTIPLICITY
1640	struct ev_loop *loop = ev_default_loop_ptr;	1814	struct ev_loop *loop = ev_default_loop_ptr;
1641	#endif	1815	#endif
1642		1816
		1817	ev_default_loop_ptr = 0;
		1818
1643	#ifndef _WIN32	1819	#ifndef _WIN32
1644	ev_ref (EV_A); /* child watcher */	1820	ev_ref (EV_A); /* child watcher */
1645	ev_signal_stop (EV_A_ &childev);	1821	ev_signal_stop (EV_A_ &childev);
1646	#endif	1822	#endif
1647		1823
…		…
1653	{	1829	{
1654	#if EV_MULTIPLICITY	1830	#if EV_MULTIPLICITY
1655	struct ev_loop *loop = ev_default_loop_ptr;	1831	struct ev_loop *loop = ev_default_loop_ptr;
1656	#endif	1832	#endif
1657		1833
1658	if (backend)
1659	postfork = 1; /* must be in line with ev_loop_fork */	1834	postfork = 1; /* must be in line with ev_loop_fork */
1660	}	1835	}
1661		1836
1662	/*****************************************************************************/	1837	/*****************************************************************************/
1663		1838
1664	void	1839	void
1665	ev_invoke (EV_P_ void *w, int revents)	1840	ev_invoke (EV_P_ void *w, int revents)
1666	{	1841	{
1667	EV_CB_INVOKE ((W)w, revents);	1842	EV_CB_INVOKE ((W)w, revents);
1668	}	1843	}
1669		1844
1670	void inline_speed	1845	unsigned int
1671	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)
1672	{	1859	{
1673	int pri;	1860	int pri;
1674		1861
1675	for (pri = NUMPRI; pri--; )	1862	for (pri = NUMPRI; pri--; )
1676	while (pendingcnt [pri])	1863	while (pendingcnt [pri])
1677	{	1864	{
1678	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1865	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1679		1866
1680	if (expect_true (p->w))
1681	{
1682	/*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 */
1683		1869
1684	p->w->pending = 0;	1870	p->w->pending = 0;
1685	EV_CB_INVOKE (p->w, p->events);	1871	EV_CB_INVOKE (p->w, p->events);
1686	EV_FREQUENT_CHECK;	1872	EV_FREQUENT_CHECK;
1687	}
1688	}	1873	}
1689	}	1874	}
1690		1875
1691	#if EV_IDLE_ENABLE	1876	#if EV_IDLE_ENABLE
1692	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
1693	idle_reify (EV_P)	1880	idle_reify (EV_P)
1694	{	1881	{
1695	if (expect_false (idleall))	1882	if (expect_false (idleall))
1696	{	1883	{
1697	int pri;	1884	int pri;
…		…
1709	}	1896	}
1710	}	1897	}
1711	}	1898	}
1712	#endif	1899	#endif
1713		1900
1714	void inline_size	1901	/* make timers pending */
		1902	inline_size void
1715	timers_reify (EV_P)	1903	timers_reify (EV_P)
1716	{	1904	{
1717	EV_FREQUENT_CHECK;	1905	EV_FREQUENT_CHECK;
1718		1906
1719	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	1907	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1720	{	1908	{
1721	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	1909	do
1722
1723	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1724
1725	/* first reschedule or stop timer */
1726	if (w->repeat)
1727	{	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	{
1728	ev_at (w) += w->repeat;	1918	ev_at (w) += w->repeat;
1729	if (ev_at (w) < mn_now)	1919	if (ev_at (w) < mn_now)
1730	ev_at (w) = mn_now;	1920	ev_at (w) = mn_now;
1731		1921
1732	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.));
1733		1923
1734	ANHE_at_cache (timers [HEAP0]);	1924	ANHE_at_cache (timers [HEAP0]);
1735	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);
1736	}	1932	}
1737	else	1933	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1738	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1739		1934
1740	EV_FREQUENT_CHECK;
1741	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1935	feed_reverse_done (EV_A_ EV_TIMEOUT);
1742	}	1936	}
1743	}	1937	}
1744		1938
1745	#if EV_PERIODIC_ENABLE	1939	#if EV_PERIODIC_ENABLE
1746	void inline_size	1940	/* make periodics pending */
		1941	inline_size void
1747	periodics_reify (EV_P)	1942	periodics_reify (EV_P)
1748	{	1943	{
1749	EV_FREQUENT_CHECK;	1944	EV_FREQUENT_CHECK;
1750		1945
1751	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	1946	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1752	{	1947	{
1753	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	1948	int feed_count = 0;
1754		1949
1755	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	1950	do
1756
1757	/* first reschedule or stop timer */
1758	if (w->reschedule_cb)
1759	{	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	{
1760	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1959	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1761		1960
1762	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));
1763		1962
1764	ANHE_at_cache (periodics [HEAP0]);	1963	ANHE_at_cache (periodics [HEAP0]);
1765	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);
1766	}	1990	}
1767	else if (w->interval)	1991	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1768	{
1769	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1770	/* if next trigger time is not sufficiently in the future, put it there */
1771	/* this might happen because of floating point inexactness */
1772	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1773	{
1774	ev_at (w) += w->interval;
1775		1992
1776	/* if interval is unreasonably low we might still have a time in the past */
1777	/* so correct this. this will make the periodic very inexact, but the user */
1778	/* has effectively asked to get triggered more often than possible */
1779	if (ev_at (w) < ev_rt_now)
1780	ev_at (w) = ev_rt_now;
1781	}
1782
1783	ANHE_at_cache (periodics [HEAP0]);
1784	downheap (periodics, periodiccnt, HEAP0);
1785	}
1786	else
1787	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1788
1789	EV_FREQUENT_CHECK;
1790	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1993	feed_reverse_done (EV_A_ EV_PERIODIC);
1791	}	1994	}
1792	}	1995	}
1793		1996
		1997	/* simply recalculate all periodics */
		1998	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1794	static void noinline	1999	static void noinline
1795	periodics_reschedule (EV_P)	2000	periodics_reschedule (EV_P)
1796	{	2001	{
1797	int i;	2002	int i;
1798		2003
…		…
1811		2016
1812	reheap (periodics, periodiccnt);	2017	reheap (periodics, periodiccnt);
1813	}	2018	}
1814	#endif	2019	#endif
1815		2020
1816	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
1817	time_update (EV_P_ ev_tstamp max_block)	2038	time_update (EV_P_ ev_tstamp max_block)
1818	{	2039	{
1819	int i;
1820
1821	#if EV_USE_MONOTONIC	2040	#if EV_USE_MONOTONIC
1822	if (expect_true (have_monotonic))	2041	if (expect_true (have_monotonic))
1823	{	2042	{
		2043	int i;
1824	ev_tstamp odiff = rtmn_diff;	2044	ev_tstamp odiff = rtmn_diff;
1825		2045
1826	mn_now = get_clock ();	2046	mn_now = get_clock ();
1827		2047
1828	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2048	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1854	ev_rt_now = ev_time ();	2074	ev_rt_now = ev_time ();
1855	mn_now = get_clock ();	2075	mn_now = get_clock ();
1856	now_floor = mn_now;	2076	now_floor = mn_now;
1857	}	2077	}
1858		2078
		2079	/* no timer adjustment, as the monotonic clock doesn't jump */
		2080	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1859	# if EV_PERIODIC_ENABLE	2081	# if EV_PERIODIC_ENABLE
1860	periodics_reschedule (EV_A);	2082	periodics_reschedule (EV_A);
1861	# endif	2083	# endif
1862	/* no timer adjustment, as the monotonic clock doesn't jump */
1863	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1864	}	2084	}
1865	else	2085	else
1866	#endif	2086	#endif
1867	{	2087	{
1868	ev_rt_now = ev_time ();	2088	ev_rt_now = ev_time ();
1869		2089
1870	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))
1871	{	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);
1872	#if EV_PERIODIC_ENABLE	2094	#if EV_PERIODIC_ENABLE
1873	periodics_reschedule (EV_A);	2095	periodics_reschedule (EV_A);
1874	#endif	2096	#endif
1875	/* adjust timers. this is easy, as the offset is the same for all of them */
1876	for (i = 0; i < timercnt; ++i)
1877	{
1878	ANHE *he = timers + i + HEAP0;
1879	ANHE_w (*he)->at += ev_rt_now - mn_now;
1880	ANHE_at_cache (*he);
1881	}
1882	}	2097	}
1883		2098
1884	mn_now = ev_rt_now;	2099	mn_now = ev_rt_now;
1885	}	2100	}
1886	}	2101	}
1887		2102
1888	void	2103	void
1889	ev_ref (EV_P)
1890	{
1891	++activecnt;
1892	}
1893
1894	void
1895	ev_unref (EV_P)
1896	{
1897	--activecnt;
1898	}
1899
1900	void
1901	ev_now_update (EV_P)
1902	{
1903	time_update (EV_A_ 1e100);
1904	}
1905
1906	static int loop_done;
1907
1908	void
1909	ev_loop (EV_P_ int flags)	2104	ev_loop (EV_P_ int flags)
1910	{	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
1911	loop_done = EVUNLOOP_CANCEL;	2112	loop_done = EVUNLOOP_CANCEL;
1912		2113
1913	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 */
1914		2115
1915	do	2116	do
1916	{	2117	{
1917	#if EV_VERIFY >= 2	2118	#if EV_VERIFY >= 2
1918	ev_loop_verify (EV_A);	2119	ev_loop_verify (EV_A);
…		…
1931	/* we might have forked, so queue fork handlers */	2132	/* we might have forked, so queue fork handlers */
1932	if (expect_false (postfork))	2133	if (expect_false (postfork))
1933	if (forkcnt)	2134	if (forkcnt)
1934	{	2135	{
1935	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2136	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1936	call_pending (EV_A);	2137	EV_INVOKE_PENDING;
1937	}	2138	}
1938	#endif	2139	#endif
1939		2140
1940	/* queue prepare watchers (and execute them) */	2141	/* queue prepare watchers (and execute them) */
1941	if (expect_false (preparecnt))	2142	if (expect_false (preparecnt))
1942	{	2143	{
1943	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2144	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1944	call_pending (EV_A);	2145	EV_INVOKE_PENDING;
1945	}	2146	}
1946		2147
1947	if (expect_false (!activecnt))	2148	if (expect_false (loop_done))
1948	break;	2149	break;
1949		2150
1950	/* we might have forked, so reify kernel state if necessary */	2151	/* we might have forked, so reify kernel state if necessary */
1951	if (expect_false (postfork))	2152	if (expect_false (postfork))
1952	loop_fork (EV_A);	2153	loop_fork (EV_A);
…		…
1959	ev_tstamp waittime = 0.;	2160	ev_tstamp waittime = 0.;
1960	ev_tstamp sleeptime = 0.;	2161	ev_tstamp sleeptime = 0.;
1961		2162
1962	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2163	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1963	{	2164	{
		2165	/* remember old timestamp for io_blocktime calculation */
		2166	ev_tstamp prev_mn_now = mn_now;
		2167
1964	/* update time to cancel out callback processing overhead */	2168	/* update time to cancel out callback processing overhead */
1965	time_update (EV_A_ 1e100);	2169	time_update (EV_A_ 1e100);
1966		2170
1967	waittime = MAX_BLOCKTIME;	2171	waittime = MAX_BLOCKTIME;
1968		2172
…		…
1978	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;
1979	if (waittime > to) waittime = to;	2183	if (waittime > to) waittime = to;
1980	}	2184	}
1981	#endif	2185	#endif
1982		2186
		2187	/* don't let timeouts decrease the waittime below timeout_blocktime */
1983	if (expect_false (waittime < timeout_blocktime))	2188	if (expect_false (waittime < timeout_blocktime))
1984	waittime = timeout_blocktime;	2189	waittime = timeout_blocktime;
1985		2190
1986	sleeptime = waittime - backend_fudge;	2191	/* extra check because io_blocktime is commonly 0 */
1987
1988	if (expect_true (sleeptime > io_blocktime))	2192	if (expect_false (io_blocktime))
1989	sleeptime = io_blocktime;
1990
1991	if (sleeptime)
1992	{	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	{
1993	ev_sleep (sleeptime);	2201	ev_sleep (sleeptime);
1994	waittime -= sleeptime;	2202	waittime -= sleeptime;
		2203	}
1995	}	2204	}
1996	}	2205	}
1997		2206
		2207	#if EV_MINIMAL < 2
1998	++loop_count;	2208	++loop_count;
		2209	#endif
		2210	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1999	backend_poll (EV_A_ waittime);	2211	backend_poll (EV_A_ waittime);
		2212	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2000		2213
2001	/* update ev_rt_now, do magic */	2214	/* update ev_rt_now, do magic */
2002	time_update (EV_A_ waittime + sleeptime);	2215	time_update (EV_A_ waittime + sleeptime);
2003	}	2216	}
2004		2217
…		…
2015		2228
2016	/* queue check watchers, to be executed first */	2229	/* queue check watchers, to be executed first */
2017	if (expect_false (checkcnt))	2230	if (expect_false (checkcnt))
2018	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2231	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2019		2232
2020	call_pending (EV_A);	2233	EV_INVOKE_PENDING;
2021	}	2234	}
2022	while (expect_true (	2235	while (expect_true (
2023	activecnt	2236	activecnt
2024	&& !loop_done	2237	&& !loop_done
2025	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2238	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2026	));	2239	));
2027		2240
2028	if (loop_done == EVUNLOOP_ONE)	2241	if (loop_done == EVUNLOOP_ONE)
2029	loop_done = EVUNLOOP_CANCEL;	2242	loop_done = EVUNLOOP_CANCEL;
		2243
		2244	#if EV_MINIMAL < 2
		2245	--loop_depth;
		2246	#endif
2030	}	2247	}
2031		2248
2032	void	2249	void
2033	ev_unloop (EV_P_ int how)	2250	ev_unloop (EV_P_ int how)
2034	{	2251	{
2035	loop_done = how;	2252	loop_done = how;
2036	}	2253	}
2037		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
2038	/*****************************************************************************/	2292	/*****************************************************************************/
		2293	/* singly-linked list management, used when the expected list length is short */
2039		2294
2040	void inline_size	2295	inline_size void
2041	wlist_add (WL *head, WL elem)	2296	wlist_add (WL *head, WL elem)
2042	{	2297	{
2043	elem->next = *head;	2298	elem->next = *head;
2044	*head = elem;	2299	*head = elem;
2045	}	2300	}
2046		2301
2047	void inline_size	2302	inline_size void
2048	wlist_del (WL *head, WL elem)	2303	wlist_del (WL *head, WL elem)
2049	{	2304	{
2050	while (*head)	2305	while (*head)
2051	{	2306	{
2052	if (*head == elem)	2307	if (*head == elem)
…		…
2057		2312
2058	head = &(*head)->next;	2313	head = &(*head)->next;
2059	}	2314	}
2060	}	2315	}
2061		2316
2062	void inline_speed	2317	/* internal, faster, version of ev_clear_pending */
		2318	inline_speed void
2063	clear_pending (EV_P_ W w)	2319	clear_pending (EV_P_ W w)
2064	{	2320	{
2065	if (w->pending)	2321	if (w->pending)
2066	{	2322	{
2067	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2323	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2068	w->pending = 0;	2324	w->pending = 0;
2069	}	2325	}
2070	}	2326	}
2071		2327
2072	int	2328	int
…		…
2076	int pending = w_->pending;	2332	int pending = w_->pending;
2077		2333
2078	if (expect_true (pending))	2334	if (expect_true (pending))
2079	{	2335	{
2080	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2336	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2337	p->w = (W)&pending_w;
2081	w_->pending = 0;	2338	w_->pending = 0;
2082	p->w = 0;
2083	return p->events;	2339	return p->events;
2084	}	2340	}
2085	else	2341	else
2086	return 0;	2342	return 0;
2087	}	2343	}
2088		2344
2089	void inline_size	2345	inline_size void
2090	pri_adjust (EV_P_ W w)	2346	pri_adjust (EV_P_ W w)
2091	{	2347	{
2092	int pri = w->priority;	2348	int pri = ev_priority (w);
2093	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2349	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2094	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2350	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2095	w->priority = pri;	2351	ev_set_priority (w, pri);
2096	}	2352	}
2097		2353
2098	void inline_speed	2354	inline_speed void
2099	ev_start (EV_P_ W w, int active)	2355	ev_start (EV_P_ W w, int active)
2100	{	2356	{
2101	pri_adjust (EV_A_ w);	2357	pri_adjust (EV_A_ w);
2102	w->active = active;	2358	w->active = active;
2103	ev_ref (EV_A);	2359	ev_ref (EV_A);
2104	}	2360	}
2105		2361
2106	void inline_size	2362	inline_size void
2107	ev_stop (EV_P_ W w)	2363	ev_stop (EV_P_ W w)
2108	{	2364	{
2109	ev_unref (EV_A);	2365	ev_unref (EV_A);
2110	w->active = 0;	2366	w->active = 0;
2111	}	2367	}
…		…
2118	int fd = w->fd;	2374	int fd = w->fd;
2119		2375
2120	if (expect_false (ev_is_active (w)))	2376	if (expect_false (ev_is_active (w)))
2121	return;	2377	return;
2122		2378
2123	assert (("ev_io_start called with negative fd", fd >= 0));	2379	assert (("libev: ev_io_start called with negative fd", fd >= 0));
2124	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))));
2125		2381
2126	EV_FREQUENT_CHECK;	2382	EV_FREQUENT_CHECK;
2127		2383
2128	ev_start (EV_A_ (W)w, 1);	2384	ev_start (EV_A_ (W)w, 1);
2129	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2385	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2130	wlist_add (&anfds[fd].head, (WL)w);	2386	wlist_add (&anfds[fd].head, (WL)w);
2131		2387
2132	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2388	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2133	w->events &= ~EV_IOFDSET;	2389	w->events &= ~EV__IOFDSET;
2134		2390
2135	EV_FREQUENT_CHECK;	2391	EV_FREQUENT_CHECK;
2136	}	2392	}
2137		2393
2138	void noinline	2394	void noinline
…		…
2140	{	2396	{
2141	clear_pending (EV_A_ (W)w);	2397	clear_pending (EV_A_ (W)w);
2142	if (expect_false (!ev_is_active (w)))	2398	if (expect_false (!ev_is_active (w)))
2143	return;	2399	return;
2144		2400
2145	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));
2146		2402
2147	EV_FREQUENT_CHECK;	2403	EV_FREQUENT_CHECK;
2148		2404
2149	wlist_del (&anfds[w->fd].head, (WL)w);	2405	wlist_del (&anfds[w->fd].head, (WL)w);
2150	ev_stop (EV_A_ (W)w);	2406	ev_stop (EV_A_ (W)w);
…		…
2160	if (expect_false (ev_is_active (w)))	2416	if (expect_false (ev_is_active (w)))
2161	return;	2417	return;
2162		2418
2163	ev_at (w) += mn_now;	2419	ev_at (w) += mn_now;
2164		2420
2165	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.));
2166		2422
2167	EV_FREQUENT_CHECK;	2423	EV_FREQUENT_CHECK;
2168		2424
2169	++timercnt;	2425	++timercnt;
2170	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);	2426	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
…		…
2173	ANHE_at_cache (timers [ev_active (w)]);	2429	ANHE_at_cache (timers [ev_active (w)]);
2174	upheap (timers, ev_active (w));	2430	upheap (timers, ev_active (w));
2175		2431
2176	EV_FREQUENT_CHECK;	2432	EV_FREQUENT_CHECK;
2177		2433
2178	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2434	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2179	}	2435	}
2180		2436
2181	void noinline	2437	void noinline
2182	ev_timer_stop (EV_P_ ev_timer *w)	2438	ev_timer_stop (EV_P_ ev_timer *w)
2183	{	2439	{
…		…
2188	EV_FREQUENT_CHECK;	2444	EV_FREQUENT_CHECK;
2189		2445
2190	{	2446	{
2191	int active = ev_active (w);	2447	int active = ev_active (w);
2192		2448
2193	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2449	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2194		2450
2195	--timercnt;	2451	--timercnt;
2196		2452
2197	if (expect_true (active < timercnt + HEAP0))	2453	if (expect_true (active < timercnt + HEAP0))
2198	{	2454	{
…		…
2242		2498
2243	if (w->reschedule_cb)	2499	if (w->reschedule_cb)
2244	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2500	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2245	else if (w->interval)	2501	else if (w->interval)
2246	{	2502	{
2247	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2503	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2248	/* this formula differs from the one in periodic_reify because we do not always round up */	2504	/* this formula differs from the one in periodic_reify because we do not always round up */
2249	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2505	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2250	}	2506	}
2251	else	2507	else
2252	ev_at (w) = w->offset;	2508	ev_at (w) = w->offset;
…		…
2260	ANHE_at_cache (periodics [ev_active (w)]);	2516	ANHE_at_cache (periodics [ev_active (w)]);
2261	upheap (periodics, ev_active (w));	2517	upheap (periodics, ev_active (w));
2262		2518
2263	EV_FREQUENT_CHECK;	2519	EV_FREQUENT_CHECK;
2264		2520
2265	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2521	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2266	}	2522	}
2267		2523
2268	void noinline	2524	void noinline
2269	ev_periodic_stop (EV_P_ ev_periodic *w)	2525	ev_periodic_stop (EV_P_ ev_periodic *w)
2270	{	2526	{
…		…
2275	EV_FREQUENT_CHECK;	2531	EV_FREQUENT_CHECK;
2276		2532
2277	{	2533	{
2278	int active = ev_active (w);	2534	int active = ev_active (w);
2279		2535
2280	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2536	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2281		2537
2282	--periodiccnt;	2538	--periodiccnt;
2283		2539
2284	if (expect_true (active < periodiccnt + HEAP0))	2540	if (expect_true (active < periodiccnt + HEAP0))
2285	{	2541	{
…		…
2308		2564
2309	void noinline	2565	void noinline
2310	ev_signal_start (EV_P_ ev_signal *w)	2566	ev_signal_start (EV_P_ ev_signal *w)
2311	{	2567	{
2312	#if EV_MULTIPLICITY	2568	#if EV_MULTIPLICITY
2313	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2569	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2314	#endif	2570	#endif
2315	if (expect_false (ev_is_active (w)))	2571	if (expect_false (ev_is_active (w)))
2316	return;	2572	return;
2317		2573
2318	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2574	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2319		2575
2320	evpipe_init (EV_A);	2576	evpipe_init (EV_A);
2321		2577
2322	EV_FREQUENT_CHECK;	2578	EV_FREQUENT_CHECK;
2323		2579
…		…
2341	if (!((WL)w)->next)	2597	if (!((WL)w)->next)
2342	{	2598	{
2343	#if _WIN32	2599	#if _WIN32
2344	signal (w->signum, ev_sighandler);	2600	signal (w->signum, ev_sighandler);
2345	#else	2601	#else
2346	struct sigaction sa;	2602	struct sigaction sa = { };
2347	sa.sa_handler = ev_sighandler;	2603	sa.sa_handler = ev_sighandler;
2348	sigfillset (&sa.sa_mask);	2604	sigfillset (&sa.sa_mask);
2349	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2605	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2350	sigaction (w->signum, &sa, 0);	2606	sigaction (w->signum, &sa, 0);
2351	#endif	2607	#endif
…		…
2374		2630
2375	void	2631	void
2376	ev_child_start (EV_P_ ev_child *w)	2632	ev_child_start (EV_P_ ev_child *w)
2377	{	2633	{
2378	#if EV_MULTIPLICITY	2634	#if EV_MULTIPLICITY
2379	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2635	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2380	#endif	2636	#endif
2381	if (expect_false (ev_is_active (w)))	2637	if (expect_false (ev_is_active (w)))
2382	return;	2638	return;
2383		2639
2384	EV_FREQUENT_CHECK;	2640	EV_FREQUENT_CHECK;
…		…
2409	# ifdef _WIN32	2665	# ifdef _WIN32
2410	# undef lstat	2666	# undef lstat
2411	# define lstat(a,b) _stati64 (a,b)	2667	# define lstat(a,b) _stati64 (a,b)
2412	# endif	2668	# endif
2413		2669
2414	#define DEF_STAT_INTERVAL 5.0074891	2670	#define DEF_STAT_INTERVAL 5.0074891
		2671	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2415	#define MIN_STAT_INTERVAL 0.1074891	2672	#define MIN_STAT_INTERVAL 0.1074891
2416		2673
2417	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2674	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2418		2675
2419	#if EV_USE_INOTIFY	2676	#if EV_USE_INOTIFY
2420	# define EV_INOTIFY_BUFSIZE 8192	2677	# define EV_INOTIFY_BUFSIZE 8192
…		…
2424	{	2681	{
2425	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);	2682	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2426		2683
2427	if (w->wd < 0)	2684	if (w->wd < 0)
2428	{	2685	{
		2686	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2429	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2687	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2430		2688
2431	/* monitor some parent directory for speedup hints */	2689	/* monitor some parent directory for speedup hints */
2432	/* note that exceeding the hardcoded limit is not a correctness issue, */	2690	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2433	/* but an efficiency issue only */	2691	/* but an efficiency issue only */
2434	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2692	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2435	{	2693	{
2436	char path [4096];	2694	char path [4096];
2437	strcpy (path, w->path);	2695	strcpy (path, w->path);
…		…
2441	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2699	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2442	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2700	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2443		2701
2444	char *pend = strrchr (path, '/');	2702	char *pend = strrchr (path, '/');
2445		2703
2446	if (!pend)	2704	if (!pend || pend == path)
2447	break; /* whoops, no '/', complain to your admin */	2705	break;
2448		2706
2449	*pend = 0;	2707	*pend = 0;
2450	w->wd = inotify_add_watch (fs_fd, path, mask);	2708	w->wd = inotify_add_watch (fs_fd, path, mask);
2451	}	2709	}
2452	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2710	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2453	}	2711	}
2454	}	2712	}
2455	else
2456	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2457		2713
2458	if (w->wd >= 0)	2714	if (w->wd >= 0)
		2715	{
2459	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2716	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2717
		2718	/* now local changes will be tracked by inotify, but remote changes won't */
		2719	/* unless the filesystem it known to be local, we therefore still poll */
		2720	/* also do poll on <2.6.25, but with normal frequency */
		2721	struct statfs sfs;
		2722
		2723	if (fs_2625 && !statfs (w->path, &sfs))
		2724	if (sfs.f_type == 0x1373 /* devfs */
		2725	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2726	|| sfs.f_type == 0x3153464a /* jfs */
		2727	|| sfs.f_type == 0x52654973 /* reiser3 */
		2728	|| sfs.f_type == 0x01021994 /* tempfs */
		2729	|| sfs.f_type == 0x58465342 /* xfs */)
		2730	return;
		2731
		2732	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2733	ev_timer_again (EV_A_ &w->timer);
		2734	}
2460	}	2735	}
2461		2736
2462	static void noinline	2737	static void noinline
2463	infy_del (EV_P_ ev_stat *w)	2738	infy_del (EV_P_ ev_stat *w)
2464	{	2739	{
…		…
2494		2769
2495	if (w->wd == wd || wd == -1)	2770	if (w->wd == wd || wd == -1)
2496	{	2771	{
2497	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2772	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2498	{	2773	{
		2774	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2499	w->wd = -1;	2775	w->wd = -1;
2500	infy_add (EV_A_ w); /* re-add, no matter what */	2776	infy_add (EV_A_ w); /* re-add, no matter what */
2501	}	2777	}
2502		2778
2503	stat_timer_cb (EV_A_ &w->timer, 0);	2779	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2516		2792
2517	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2793	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2518	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2794	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2519	}	2795	}
2520		2796
2521	void inline_size	2797	inline_size void
2522	infy_init (EV_P)	2798	check_2625 (EV_P)
2523	{	2799	{
2524	if (fs_fd != -2)
2525	return;
2526
2527	/* kernels < 2.6.25 are borked	2800	/* kernels < 2.6.25 are borked
2528	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html	2801	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2529	*/	2802	*/
2530	{
2531	struct utsname buf;	2803	struct utsname buf;
2532	int major, minor, micro;	2804	int major, minor, micro;
2533		2805
2534	fs_fd = -1;
2535
2536	if (uname (&buf))	2806	if (uname (&buf))
2537	return;	2807	return;
2538		2808
2539	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)	2809	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2540	return;	2810	return;
2541		2811
2542	if (major < 2	2812	if (major < 2
2543	|| (major == 2 && minor < 6)	2813	|| (major == 2 && minor < 6)
2544	|| (major == 2 && minor == 6 && micro < 25))	2814	|| (major == 2 && minor == 6 && micro < 25))
2545	return;	2815	return;
2546	}	2816
		2817	fs_2625 = 1;
		2818	}
		2819
		2820	inline_size void
		2821	infy_init (EV_P)
		2822	{
		2823	if (fs_fd != -2)
		2824	return;
		2825
		2826	fs_fd = -1;
		2827
		2828	check_2625 (EV_A);
2547		2829
2548	fs_fd = inotify_init ();	2830	fs_fd = inotify_init ();
2549		2831
2550	if (fs_fd >= 0)	2832	if (fs_fd >= 0)
2551	{	2833	{
…		…
2553	ev_set_priority (&fs_w, EV_MAXPRI);	2835	ev_set_priority (&fs_w, EV_MAXPRI);
2554	ev_io_start (EV_A_ &fs_w);	2836	ev_io_start (EV_A_ &fs_w);
2555	}	2837	}
2556	}	2838	}
2557		2839
2558	void inline_size	2840	inline_size void
2559	infy_fork (EV_P)	2841	infy_fork (EV_P)
2560	{	2842	{
2561	int slot;	2843	int slot;
2562		2844
2563	if (fs_fd < 0)	2845	if (fs_fd < 0)
…		…
2579	w->wd = -1;	2861	w->wd = -1;
2580		2862
2581	if (fs_fd >= 0)	2863	if (fs_fd >= 0)
2582	infy_add (EV_A_ w); /* re-add, no matter what */	2864	infy_add (EV_A_ w); /* re-add, no matter what */
2583	else	2865	else
2584	ev_timer_start (EV_A_ &w->timer);	2866	ev_timer_again (EV_A_ &w->timer);
2585	}	2867	}
2586	}	2868	}
2587	}	2869	}
2588		2870
2589	#endif	2871	#endif
…		…
2644	ev_stat_start (EV_P_ ev_stat *w)	2926	ev_stat_start (EV_P_ ev_stat *w)
2645	{	2927	{
2646	if (expect_false (ev_is_active (w)))	2928	if (expect_false (ev_is_active (w)))
2647	return;	2929	return;
2648		2930
2649	/* since we use memcmp, we need to clear any padding data etc. */
2650	memset (&w->prev, 0, sizeof (ev_statdata));
2651	memset (&w->attr, 0, sizeof (ev_statdata));
2652
2653	ev_stat_stat (EV_A_ w);	2931	ev_stat_stat (EV_A_ w);
2654		2932
		2933	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2655	if (w->interval < MIN_STAT_INTERVAL)	2934	w->interval = MIN_STAT_INTERVAL;
2656	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2657		2935
2658	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2936	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2659	ev_set_priority (&w->timer, ev_priority (w));	2937	ev_set_priority (&w->timer, ev_priority (w));
2660		2938
2661	#if EV_USE_INOTIFY	2939	#if EV_USE_INOTIFY
2662	infy_init (EV_A);	2940	infy_init (EV_A);
2663		2941
2664	if (fs_fd >= 0)	2942	if (fs_fd >= 0)
2665	infy_add (EV_A_ w);	2943	infy_add (EV_A_ w);
2666	else	2944	else
2667	#endif	2945	#endif
2668	ev_timer_start (EV_A_ &w->timer);	2946	ev_timer_again (EV_A_ &w->timer);
2669		2947
2670	ev_start (EV_A_ (W)w, 1);	2948	ev_start (EV_A_ (W)w, 1);
2671		2949
2672	EV_FREQUENT_CHECK;	2950	EV_FREQUENT_CHECK;
2673	}	2951	}
…		…
2848	static void	3126	static void
2849	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)	3127	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2850	{	3128	{
2851	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));	3129	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2852		3130
		3131	ev_embed_stop (EV_A_ w);
		3132
2853	{	3133	{
2854	struct ev_loop *loop = w->other;	3134	struct ev_loop *loop = w->other;
2855		3135
2856	ev_loop_fork (EV_A);	3136	ev_loop_fork (EV_A);
		3137	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2857	}	3138	}
		3139
		3140	ev_embed_start (EV_A_ w);
2858	}	3141	}
2859		3142
2860	#if 0	3143	#if 0
2861	static void	3144	static void
2862	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3145	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
…		…
2871	if (expect_false (ev_is_active (w)))	3154	if (expect_false (ev_is_active (w)))
2872	return;	3155	return;
2873		3156
2874	{	3157	{
2875	struct ev_loop *loop = w->other;	3158	struct ev_loop *loop = w->other;
2876	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3159	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2877	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3160	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2878	}	3161	}
2879		3162
2880	EV_FREQUENT_CHECK;	3163	EV_FREQUENT_CHECK;
2881		3164
…		…
3064	ev_timer_set (&once->to, timeout, 0.);	3347	ev_timer_set (&once->to, timeout, 0.);
3065	ev_timer_start (EV_A_ &once->to);	3348	ev_timer_start (EV_A_ &once->to);
3066	}	3349	}
3067	}	3350	}
3068		3351
		3352	/*****************************************************************************/
		3353
		3354	#if EV_WALK_ENABLE
		3355	void
		3356	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3357	{
		3358	int i, j;
		3359	ev_watcher_list *wl, *wn;
		3360
		3361	if (types & (EV_IO | EV_EMBED))
		3362	for (i = 0; i < anfdmax; ++i)
		3363	for (wl = anfds [i].head; wl; )
		3364	{
		3365	wn = wl->next;
		3366
		3367	#if EV_EMBED_ENABLE
		3368	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3369	{
		3370	if (types & EV_EMBED)
		3371	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3372	}
		3373	else
		3374	#endif
		3375	#if EV_USE_INOTIFY
		3376	if (ev_cb ((ev_io *)wl) == infy_cb)
		3377	;
		3378	else
		3379	#endif
		3380	if ((ev_io *)wl != &pipe_w)
		3381	if (types & EV_IO)
		3382	cb (EV_A_ EV_IO, wl);
		3383
		3384	wl = wn;
		3385	}
		3386
		3387	if (types & (EV_TIMER | EV_STAT))
		3388	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3389	#if EV_STAT_ENABLE
		3390	/*TODO: timer is not always active*/
		3391	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3392	{
		3393	if (types & EV_STAT)
		3394	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3395	}
		3396	else
		3397	#endif
		3398	if (types & EV_TIMER)
		3399	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3400
		3401	#if EV_PERIODIC_ENABLE
		3402	if (types & EV_PERIODIC)
		3403	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3404	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3405	#endif
		3406
		3407	#if EV_IDLE_ENABLE
		3408	if (types & EV_IDLE)
		3409	for (j = NUMPRI; i--; )
		3410	for (i = idlecnt [j]; i--; )
		3411	cb (EV_A_ EV_IDLE, idles [j][i]);
		3412	#endif
		3413
		3414	#if EV_FORK_ENABLE
		3415	if (types & EV_FORK)
		3416	for (i = forkcnt; i--; )
		3417	if (ev_cb (forks [i]) != embed_fork_cb)
		3418	cb (EV_A_ EV_FORK, forks [i]);
		3419	#endif
		3420
		3421	#if EV_ASYNC_ENABLE
		3422	if (types & EV_ASYNC)
		3423	for (i = asynccnt; i--; )
		3424	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3425	#endif
		3426
		3427	if (types & EV_PREPARE)
		3428	for (i = preparecnt; i--; )
		3429	#if EV_EMBED_ENABLE
		3430	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3431	#endif
		3432	cb (EV_A_ EV_PREPARE, prepares [i]);
		3433
		3434	if (types & EV_CHECK)
		3435	for (i = checkcnt; i--; )
		3436	cb (EV_A_ EV_CHECK, checks [i]);
		3437
		3438	if (types & EV_SIGNAL)
		3439	for (i = 0; i < signalmax; ++i)
		3440	for (wl = signals [i].head; wl; )
		3441	{
		3442	wn = wl->next;
		3443	cb (EV_A_ EV_SIGNAL, wl);
		3444	wl = wn;
		3445	}
		3446
		3447	if (types & EV_CHILD)
		3448	for (i = EV_PID_HASHSIZE; i--; )
		3449	for (wl = childs [i]; wl; )
		3450	{
		3451	wn = wl->next;
		3452	cb (EV_A_ EV_CHILD, wl);
		3453	wl = wn;
		3454	}
		3455	/* EV_STAT 0x00001000 /* stat data changed */
		3456	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3457	}
		3458	#endif
		3459
3069	#if EV_MULTIPLICITY	3460	#if EV_MULTIPLICITY
3070	#include "ev_wrap.h"	3461	#include "ev_wrap.h"
3071	#endif	3462	#endif
3072		3463
3073	#ifdef __cplusplus	3464	#ifdef __cplusplus

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