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Comparing libev/ev.c (file contents):
Revision 1.276 by root, Sun Dec 14 13:03:54 2008 UTC vs.
Revision 1.305 by root, Sun Jul 19 03:49:04 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
…		…
131	# else	133	# else
132	# define EV_USE_INOTIFY 0	134	# define EV_USE_INOTIFY 0
133	# endif	135	# endif
134	# endif	136	# endif
135		137
		138	# ifndef EV_USE_SIGNALFD
		139	# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
		140	# define EV_USE_SIGNALFD 1
		141	# else
		142	# define EV_USE_SIGNALFD 0
		143	# endif
		144	# endif
		145
136	# ifndef EV_USE_EVENTFD	146	# ifndef EV_USE_EVENTFD
137	# if HAVE_EVENTFD	147	# if HAVE_EVENTFD
138	# define EV_USE_EVENTFD 1	148	# define EV_USE_EVENTFD 1
139	# else	149	# else
140	# define EV_USE_EVENTFD 0	150	# define EV_USE_EVENTFD 0
…		…
176	# endif	186	# endif
177	#endif	187	#endif
178		188
179	/* this block tries to deduce configuration from header-defined symbols and defaults */	189	/* this block tries to deduce configuration from header-defined symbols and defaults */
180		190
		191	/* try to deduce the maximum number of signals on this platform */
		192	#if defined (EV_NSIG)
		193	/* use what's provided */
		194	#elif defined (NSIG)
		195	# define EV_NSIG (NSIG)
		196	#elif defined(_NSIG)
		197	# define EV_NSIG (_NSIG)
		198	#elif defined (SIGMAX)
		199	# define EV_NSIG (SIGMAX+1)
		200	#elif defined (SIG_MAX)
		201	# define EV_NSIG (SIG_MAX+1)
		202	#elif defined (_SIG_MAX)
		203	# define EV_NSIG (_SIG_MAX+1)
		204	#elif defined (MAXSIG)
		205	# define EV_NSIG (MAXSIG+1)
		206	#elif defined (MAX_SIG)
		207	# define EV_NSIG (MAX_SIG+1)
		208	#elif defined (SIGARRAYSIZE)
		209	# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
		210	#elif defined (_sys_nsig)
		211	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
		212	#else
		213	# error "unable to find value for NSIG, please report"
		214	/* to make it compile regardless, just remove the above line */
		215	# define EV_NSIG 64
		216	#endif
		217
		218	/* Default to some arbitrary number that's big enough to get most
		219	of the common signals.
		220	*/
		221	#ifndef NSIG
		222	# define NSIG 50
		223	#endif
		224	/* <-- NSIG logic from Configure */
181	#ifndef EV_USE_CLOCK_SYSCALL	225	#ifndef EV_USE_CLOCK_SYSCALL
182	# if __linux && __GLIBC__ >= 2	226	# if __linux && __GLIBC__ >= 2
183	# define EV_USE_CLOCK_SYSCALL 1	227	# define EV_USE_CLOCK_SYSCALL 1
184	# else	228	# else
185	# define EV_USE_CLOCK_SYSCALL 0	229	# define EV_USE_CLOCK_SYSCALL 0
…		…
193	# define EV_USE_MONOTONIC 0	237	# define EV_USE_MONOTONIC 0
194	# endif	238	# endif
195	#endif	239	#endif
196		240
197	#ifndef EV_USE_REALTIME	241	#ifndef EV_USE_REALTIME
198	# define EV_USE_REALTIME 0	242	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
199	#endif	243	#endif
200		244
201	#ifndef EV_USE_NANOSLEEP	245	#ifndef EV_USE_NANOSLEEP
202	# if _POSIX_C_SOURCE >= 199309L	246	# if _POSIX_C_SOURCE >= 199309L
203	# define EV_USE_NANOSLEEP 1	247	# define EV_USE_NANOSLEEP 1
…		…
264	# else	308	# else
265	# define EV_USE_EVENTFD 0	309	# define EV_USE_EVENTFD 0
266	# endif	310	# endif
267	#endif	311	#endif
268		312
		313	#ifndef EV_USE_SIGNALFD
		314	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9))
		315	# define EV_USE_SIGNALFD 1
		316	# else
		317	# define EV_USE_SIGNALFD 0
		318	# endif
		319	#endif
		320
269	#if 0 /* debugging */	321	#if 0 /* debugging */
270	# define EV_VERIFY 3	322	# define EV_VERIFY 3
271	# define EV_USE_4HEAP 1	323	# define EV_USE_4HEAP 1
272	# define EV_HEAP_CACHE_AT 1	324	# define EV_HEAP_CACHE_AT 1
273	#endif	325	#endif
…		…
280	# define EV_USE_4HEAP !EV_MINIMAL	332	# define EV_USE_4HEAP !EV_MINIMAL
281	#endif	333	#endif
282		334
283	#ifndef EV_HEAP_CACHE_AT	335	#ifndef EV_HEAP_CACHE_AT
284	# define EV_HEAP_CACHE_AT !EV_MINIMAL	336	# define EV_HEAP_CACHE_AT !EV_MINIMAL
		337	#endif
		338
		339	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		340	/* which makes programs even slower. might work on other unices, too. */
		341	#if EV_USE_CLOCK_SYSCALL
		342	# include <syscall.h>
		343	# ifdef SYS_clock_gettime
		344	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		345	# undef EV_USE_MONOTONIC
		346	# define EV_USE_MONOTONIC 1
		347	# else
		348	# undef EV_USE_CLOCK_SYSCALL
		349	# define EV_USE_CLOCK_SYSCALL 0
		350	# endif
285	#endif	351	#endif
286		352
287	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	353	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
288		354
289	#ifndef CLOCK_MONOTONIC	355	#ifndef CLOCK_MONOTONIC
…		…
320		386
321	#if EV_SELECT_IS_WINSOCKET	387	#if EV_SELECT_IS_WINSOCKET
322	# include <winsock.h>	388	# include <winsock.h>
323	#endif	389	#endif
324		390
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	391	#if EV_USE_EVENTFD
335	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	392	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
336	# include <stdint.h>	393	# include <stdint.h>
		394	# ifndef EFD_NONBLOCK
		395	# define EFD_NONBLOCK O_NONBLOCK
		396	# endif
		397	# ifndef EFD_CLOEXEC
		398	# define EFD_CLOEXEC O_CLOEXEC
		399	# endif
337	# ifdef __cplusplus	400	# ifdef __cplusplus
338	extern "C" {	401	extern "C" {
339	# endif	402	# endif
340	int eventfd (unsigned int initval, int flags);	403	int eventfd (unsigned int initval, int flags);
341	# ifdef __cplusplus	404	# ifdef __cplusplus
342	}	405	}
343	# endif	406	# endif
		407	#endif
		408
		409	#if EV_USE_SIGNALFD
		410	# include <sys/signalfd.h>
344	#endif	411	#endif
345		412
346	/**/	413	/**/
347		414
348	#if EV_VERIFY >= 3	415	#if EV_VERIFY >= 3
…		…
384	# define inline_speed static noinline	451	# define inline_speed static noinline
385	#else	452	#else
386	# define inline_speed static inline	453	# define inline_speed static inline
387	#endif	454	#endif
388		455
389	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	456	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		457
		458	#if EV_MINPRI == EV_MAXPRI
		459	# define ABSPRI(w) (((W)w), 0)
		460	#else
390	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	461	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		462	#endif
391		463
392	#define EMPTY /* required for microsofts broken pseudo-c compiler */	464	#define EMPTY /* required for microsofts broken pseudo-c compiler */
393	#define EMPTY2(a,b) /* used to suppress some warnings */	465	#define EMPTY2(a,b) /* used to suppress some warnings */
394		466
395	typedef ev_watcher *W;	467	typedef ev_watcher *W;
…		…
397	typedef ev_watcher_time *WT;	469	typedef ev_watcher_time *WT;
398		470
399	#define ev_active(w) ((W)(w))->active	471	#define ev_active(w) ((W)(w))->active
400	#define ev_at(w) ((WT)(w))->at	472	#define ev_at(w) ((WT)(w))->at
401		473
402	#if EV_USE_MONOTONIC	474	#if EV_USE_REALTIME
403	/* sig_atomic_t is used to avoid per-thread variables or locking but still */	475	/* 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 */	476	/* giving it a reasonably high chance of working on typical architetcures */
		477	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		478	#endif
		479
		480	#if EV_USE_MONOTONIC
405	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	481	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
406	#endif	482	#endif
407		483
408	#ifdef _WIN32	484	#ifdef _WIN32
409	# include "ev_win32.c"	485	# include "ev_win32.c"
…		…
474	#define ev_malloc(size) ev_realloc (0, (size))	550	#define ev_malloc(size) ev_realloc (0, (size))
475	#define ev_free(ptr) ev_realloc ((ptr), 0)	551	#define ev_free(ptr) ev_realloc ((ptr), 0)
476		552
477	/*****************************************************************************/	553	/*****************************************************************************/
478		554
		555	/* set in reify when reification needed */
		556	#define EV_ANFD_REIFY 1
		557
		558	/* file descriptor info structure */
479	typedef struct	559	typedef struct
480	{	560	{
481	WL head;	561	WL head;
482	unsigned char events;	562	unsigned char events; /* the events watched for */
483	unsigned char reify;	563	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 */	564	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
485	unsigned char unused;	565	unsigned char unused;
486	#if EV_USE_EPOLL	566	#if EV_USE_EPOLL
487	unsigned int egen; /* generation counter to counter epoll bugs */	567	unsigned int egen; /* generation counter to counter epoll bugs */
488	#endif	568	#endif
489	#if EV_SELECT_IS_WINSOCKET	569	#if EV_SELECT_IS_WINSOCKET
490	SOCKET handle;	570	SOCKET handle;
491	#endif	571	#endif
492	} ANFD;	572	} ANFD;
493		573
		574	/* stores the pending event set for a given watcher */
494	typedef struct	575	typedef struct
495	{	576	{
496	W w;	577	W w;
497	int events;	578	int events; /* the pending event set for the given watcher */
498	} ANPENDING;	579	} ANPENDING;
499		580
500	#if EV_USE_INOTIFY	581	#if EV_USE_INOTIFY
501	/* hash table entry per inotify-id */	582	/* hash table entry per inotify-id */
502	typedef struct	583	typedef struct
…		…
505	} ANFS;	586	} ANFS;
506	#endif	587	#endif
507		588
508	/* Heap Entry */	589	/* Heap Entry */
509	#if EV_HEAP_CACHE_AT	590	#if EV_HEAP_CACHE_AT
		591	/* a heap element */
510	typedef struct {	592	typedef struct {
511	ev_tstamp at;	593	ev_tstamp at;
512	WT w;	594	WT w;
513	} ANHE;	595	} ANHE;
514		596
515	#define ANHE_w(he) (he).w /* access watcher, read-write */	597	#define ANHE_w(he) (he).w /* access watcher, read-write */
516	#define ANHE_at(he) (he).at /* access cached at, read-only */	598	#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 */	599	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
518	#else	600	#else
		601	/* a heap element */
519	typedef WT ANHE;	602	typedef WT ANHE;
520		603
521	#define ANHE_w(he) (he)	604	#define ANHE_w(he) (he)
522	#define ANHE_at(he) (he)->at	605	#define ANHE_at(he) (he)->at
523	#define ANHE_at_cache(he)	606	#define ANHE_at_cache(he)
…		…
547		630
548	static int ev_default_loop_ptr;	631	static int ev_default_loop_ptr;
549		632
550	#endif	633	#endif
551		634
		635	#if EV_MINIMAL < 2
		636	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		637	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		638	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		639	#else
		640	# define EV_RELEASE_CB (void)0
		641	# define EV_ACQUIRE_CB (void)0
		642	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		643	#endif
		644
		645	#define EVUNLOOP_RECURSE 0x80
		646
552	/*****************************************************************************/	647	/*****************************************************************************/
553		648
		649	#ifndef EV_HAVE_EV_TIME
554	ev_tstamp	650	ev_tstamp
555	ev_time (void)	651	ev_time (void)
556	{	652	{
557	#if EV_USE_REALTIME	653	#if EV_USE_REALTIME
		654	if (expect_true (have_realtime))
		655	{
558	struct timespec ts;	656	struct timespec ts;
559	clock_gettime (CLOCK_REALTIME, &ts);	657	clock_gettime (CLOCK_REALTIME, &ts);
560	return ts.tv_sec + ts.tv_nsec * 1e-9;	658	return ts.tv_sec + ts.tv_nsec * 1e-9;
561	#else	659	}
		660	#endif
		661
562	struct timeval tv;	662	struct timeval tv;
563	gettimeofday (&tv, 0);	663	gettimeofday (&tv, 0);
564	return tv.tv_sec + tv.tv_usec * 1e-6;	664	return tv.tv_sec + tv.tv_usec * 1e-6;
565	#endif
566	}	665	}
		666	#endif
567		667
568	ev_tstamp inline_size	668	inline_size ev_tstamp
569	get_clock (void)	669	get_clock (void)
570	{	670	{
571	#if EV_USE_MONOTONIC	671	#if EV_USE_MONOTONIC
572	if (expect_true (have_monotonic))	672	if (expect_true (have_monotonic))
573	{	673	{
…		…
607		707
608	tv.tv_sec = (time_t)delay;	708	tv.tv_sec = (time_t)delay;
609	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	709	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
610		710
611	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */	711	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
612	/* somehting nto guaranteed by newer posix versions, but guaranteed */	712	/* something not guaranteed by newer posix versions, but guaranteed */
613	/* by older ones */	713	/* by older ones */
614	select (0, 0, 0, 0, &tv);	714	select (0, 0, 0, 0, &tv);
615	#endif	715	#endif
616	}	716	}
617	}	717	}
618		718
619	/*****************************************************************************/	719	/*****************************************************************************/
620		720
621	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	721	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
622		722
623	int inline_size	723	/* find a suitable new size for the given array, */
		724	/* hopefully by rounding to a ncie-to-malloc size */
		725	inline_size int
624	array_nextsize (int elem, int cur, int cnt)	726	array_nextsize (int elem, int cur, int cnt)
625	{	727	{
626	int ncur = cur + 1;	728	int ncur = cur + 1;
627		729
628	do	730	do
…		…
669	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	771	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
670	}	772	}
671	#endif	773	#endif
672		774
673	#define array_free(stem, idx) \	775	#define array_free(stem, idx) \
674	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	776	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
675		777
676	/*****************************************************************************/	778	/*****************************************************************************/
		779
		780	/* dummy callback for pending events */
		781	static void noinline
		782	pendingcb (EV_P_ ev_prepare *w, int revents)
		783	{
		784	}
677		785
678	void noinline	786	void noinline
679	ev_feed_event (EV_P_ void *w, int revents)	787	ev_feed_event (EV_P_ void *w, int revents)
680	{	788	{
681	W w_ = (W)w;	789	W w_ = (W)w;
…		…
690	pendings [pri][w_->pending - 1].w = w_;	798	pendings [pri][w_->pending - 1].w = w_;
691	pendings [pri][w_->pending - 1].events = revents;	799	pendings [pri][w_->pending - 1].events = revents;
692	}	800	}
693	}	801	}
694		802
695	void inline_speed	803	inline_speed void
		804	feed_reverse (EV_P_ W w)
		805	{
		806	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		807	rfeeds [rfeedcnt++] = w;
		808	}
		809
		810	inline_size void
		811	feed_reverse_done (EV_P_ int revents)
		812	{
		813	do
		814	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		815	while (rfeedcnt);
		816	}
		817
		818	inline_speed void
696	queue_events (EV_P_ W *events, int eventcnt, int type)	819	queue_events (EV_P_ W *events, int eventcnt, int type)
697	{	820	{
698	int i;	821	int i;
699		822
700	for (i = 0; i < eventcnt; ++i)	823	for (i = 0; i < eventcnt; ++i)
701	ev_feed_event (EV_A_ events [i], type);	824	ev_feed_event (EV_A_ events [i], type);
702	}	825	}
703		826
704	/*****************************************************************************/	827	/*****************************************************************************/
705		828
706	void inline_speed	829	inline_speed void
707	fd_event (EV_P_ int fd, int revents)	830	fd_event_nc (EV_P_ int fd, int revents)
708	{	831	{
709	ANFD *anfd = anfds + fd;	832	ANFD *anfd = anfds + fd;
710	ev_io *w;	833	ev_io *w;
711		834
712	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	835	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
716	if (ev)	839	if (ev)
717	ev_feed_event (EV_A_ (W)w, ev);	840	ev_feed_event (EV_A_ (W)w, ev);
718	}	841	}
719	}	842	}
720		843
		844	/* do not submit kernel events for fds that have reify set */
		845	/* because that means they changed while we were polling for new events */
		846	inline_speed void
		847	fd_event (EV_P_ int fd, int revents)
		848	{
		849	ANFD *anfd = anfds + fd;
		850
		851	if (expect_true (!anfd->reify))
		852	fd_event_nc (EV_A_ fd, revents);
		853	}
		854
721	void	855	void
722	ev_feed_fd_event (EV_P_ int fd, int revents)	856	ev_feed_fd_event (EV_P_ int fd, int revents)
723	{	857	{
724	if (fd >= 0 && fd < anfdmax)	858	if (fd >= 0 && fd < anfdmax)
725	fd_event (EV_A_ fd, revents);	859	fd_event_nc (EV_A_ fd, revents);
726	}	860	}
727		861
728	void inline_size	862	/* make sure the external fd watch events are in-sync */
		863	/* with the kernel/libev internal state */
		864	inline_size void
729	fd_reify (EV_P)	865	fd_reify (EV_P)
730	{	866	{
731	int i;	867	int i;
732		868
733	for (i = 0; i < fdchangecnt; ++i)	869	for (i = 0; i < fdchangecnt; ++i)
…		…
748	#ifdef EV_FD_TO_WIN32_HANDLE	884	#ifdef EV_FD_TO_WIN32_HANDLE
749	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	885	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
750	#else	886	#else
751	anfd->handle = _get_osfhandle (fd);	887	anfd->handle = _get_osfhandle (fd);
752	#endif	888	#endif
753	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	889	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
754	}	890	}
755	#endif	891	#endif
756		892
757	{	893	{
758	unsigned char o_events = anfd->events;	894	unsigned char o_events = anfd->events;
759	unsigned char o_reify = anfd->reify;	895	unsigned char o_reify = anfd->reify;
760		896
761	anfd->reify = 0;	897	anfd->reify = 0;
762	anfd->events = events;	898	anfd->events = events;
763		899
764	if (o_events != events || o_reify & EV_IOFDSET)	900	if (o_events != events || o_reify & EV__IOFDSET)
765	backend_modify (EV_A_ fd, o_events, events);	901	backend_modify (EV_A_ fd, o_events, events);
766	}	902	}
767	}	903	}
768		904
769	fdchangecnt = 0;	905	fdchangecnt = 0;
770	}	906	}
771		907
772	void inline_size	908	/* something about the given fd changed */
		909	inline_size void
773	fd_change (EV_P_ int fd, int flags)	910	fd_change (EV_P_ int fd, int flags)
774	{	911	{
775	unsigned char reify = anfds [fd].reify;	912	unsigned char reify = anfds [fd].reify;
776	anfds [fd].reify |= flags;	913	anfds [fd].reify |= flags;
777		914
…		…
781	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	918	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
782	fdchanges [fdchangecnt - 1] = fd;	919	fdchanges [fdchangecnt - 1] = fd;
783	}	920	}
784	}	921	}
785		922
786	void inline_speed	923	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		924	inline_speed void
787	fd_kill (EV_P_ int fd)	925	fd_kill (EV_P_ int fd)
788	{	926	{
789	ev_io *w;	927	ev_io *w;
790		928
791	while ((w = (ev_io *)anfds [fd].head))	929	while ((w = (ev_io *)anfds [fd].head))
…		…
793	ev_io_stop (EV_A_ w);	931	ev_io_stop (EV_A_ w);
794	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	932	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
795	}	933	}
796	}	934	}
797		935
798	int inline_size	936	/* check whether the given fd is atcually valid, for error recovery */
		937	inline_size int
799	fd_valid (int fd)	938	fd_valid (int fd)
800	{	939	{
801	#ifdef _WIN32	940	#ifdef _WIN32
802	return _get_osfhandle (fd) != -1;	941	return _get_osfhandle (fd) != -1;
803	#else	942	#else
…		…
840	for (fd = 0; fd < anfdmax; ++fd)	979	for (fd = 0; fd < anfdmax; ++fd)
841	if (anfds [fd].events)	980	if (anfds [fd].events)
842	{	981	{
843	anfds [fd].events = 0;	982	anfds [fd].events = 0;
844	anfds [fd].emask = 0;	983	anfds [fd].emask = 0;
845	fd_change (EV_A_ fd, EV_IOFDSET | 1);	984	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
846	}	985	}
847	}	986	}
848		987
849	/*****************************************************************************/	988	/*****************************************************************************/
850		989
…		…
866	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	1005	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
867	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)	1006	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
868	#define UPHEAP_DONE(p,k) ((p) == (k))	1007	#define UPHEAP_DONE(p,k) ((p) == (k))
869		1008
870	/* away from the root */	1009	/* away from the root */
871	void inline_speed	1010	inline_speed void
872	downheap (ANHE *heap, int N, int k)	1011	downheap (ANHE *heap, int N, int k)
873	{	1012	{
874	ANHE he = heap [k];	1013	ANHE he = heap [k];
875	ANHE *E = heap + N + HEAP0;	1014	ANHE *E = heap + N + HEAP0;
876		1015
…		…
916	#define HEAP0 1	1055	#define HEAP0 1
917	#define HPARENT(k) ((k) >> 1)	1056	#define HPARENT(k) ((k) >> 1)
918	#define UPHEAP_DONE(p,k) (!(p))	1057	#define UPHEAP_DONE(p,k) (!(p))
919		1058
920	/* away from the root */	1059	/* away from the root */
921	void inline_speed	1060	inline_speed void
922	downheap (ANHE *heap, int N, int k)	1061	downheap (ANHE *heap, int N, int k)
923	{	1062	{
924	ANHE he = heap [k];	1063	ANHE he = heap [k];
925		1064
926	for (;;)	1065	for (;;)
…		…
946	ev_active (ANHE_w (he)) = k;	1085	ev_active (ANHE_w (he)) = k;
947	}	1086	}
948	#endif	1087	#endif
949		1088
950	/* towards the root */	1089	/* towards the root */
951	void inline_speed	1090	inline_speed void
952	upheap (ANHE *heap, int k)	1091	upheap (ANHE *heap, int k)
953	{	1092	{
954	ANHE he = heap [k];	1093	ANHE he = heap [k];
955		1094
956	for (;;)	1095	for (;;)
…		…
967		1106
968	heap [k] = he;	1107	heap [k] = he;
969	ev_active (ANHE_w (he)) = k;	1108	ev_active (ANHE_w (he)) = k;
970	}	1109	}
971		1110
972	void inline_size	1111	/* move an element suitably so it is in a correct place */
		1112	inline_size void
973	adjustheap (ANHE *heap, int N, int k)	1113	adjustheap (ANHE *heap, int N, int k)
974	{	1114	{
975	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1115	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
976	upheap (heap, k);	1116	upheap (heap, k);
977	else	1117	else
978	downheap (heap, N, k);	1118	downheap (heap, N, k);
979	}	1119	}
980		1120
981	/* rebuild the heap: this function is used only once and executed rarely */	1121	/* rebuild the heap: this function is used only once and executed rarely */
982	void inline_size	1122	inline_size void
983	reheap (ANHE *heap, int N)	1123	reheap (ANHE *heap, int N)
984	{	1124	{
985	int i;	1125	int i;
986		1126
987	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */	1127	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
…		…
990	upheap (heap, i + HEAP0);	1130	upheap (heap, i + HEAP0);
991	}	1131	}
992		1132
993	/*****************************************************************************/	1133	/*****************************************************************************/
994		1134
		1135	/* associate signal watchers to a signal signal */
995	typedef struct	1136	typedef struct
996	{	1137	{
997	WL head;	1138	WL head;
998	EV_ATOMIC_T gotsig;	1139	EV_ATOMIC_T gotsig;
999	} ANSIG;	1140	} ANSIG;
…		…
1003		1144
1004	static EV_ATOMIC_T gotsig;	1145	static EV_ATOMIC_T gotsig;
1005		1146
1006	/*****************************************************************************/	1147	/*****************************************************************************/
1007		1148
1008	void inline_speed	1149	/* used to prepare libev internal fd's */
		1150	/* this is not fork-safe */
		1151	inline_speed void
1009	fd_intern (int fd)	1152	fd_intern (int fd)
1010	{	1153	{
1011	#ifdef _WIN32	1154	#ifdef _WIN32
1012	unsigned long arg = 1;	1155	unsigned long arg = 1;
1013	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1156	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
1018	}	1161	}
1019		1162
1020	static void noinline	1163	static void noinline
1021	evpipe_init (EV_P)	1164	evpipe_init (EV_P)
1022	{	1165	{
1023	if (!ev_is_active (&pipeev))	1166	if (!ev_is_active (&pipe_w))
1024	{	1167	{
1025	#if EV_USE_EVENTFD	1168	#if EV_USE_EVENTFD
		1169	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1170	if (evfd < 0 && errno == EINVAL)
1026	if ((evfd = eventfd (0, 0)) >= 0)	1171	evfd = eventfd (0, 0);
		1172
		1173	if (evfd >= 0)
1027	{	1174	{
1028	evpipe [0] = -1;	1175	evpipe [0] = -1;
1029	fd_intern (evfd);	1176	fd_intern (evfd); /* doing it twice doesn't hurt */
1030	ev_io_set (&pipeev, evfd, EV_READ);	1177	ev_io_set (&pipe_w, evfd, EV_READ);
1031	}	1178	}
1032	else	1179	else
1033	#endif	1180	#endif
1034	{	1181	{
1035	while (pipe (evpipe))	1182	while (pipe (evpipe))
1036	ev_syserr ("(libev) error creating signal/async pipe");	1183	ev_syserr ("(libev) error creating signal/async pipe");
1037		1184
1038	fd_intern (evpipe [0]);	1185	fd_intern (evpipe [0]);
1039	fd_intern (evpipe [1]);	1186	fd_intern (evpipe [1]);
1040	ev_io_set (&pipeev, evpipe [0], EV_READ);	1187	ev_io_set (&pipe_w, evpipe [0], EV_READ);
1041	}	1188	}
1042		1189
1043	ev_io_start (EV_A_ &pipeev);	1190	ev_io_start (EV_A_ &pipe_w);
1044	ev_unref (EV_A); /* watcher should not keep loop alive */	1191	ev_unref (EV_A); /* watcher should not keep loop alive */
1045	}	1192	}
1046	}	1193	}
1047		1194
1048	void inline_size	1195	inline_size void
1049	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1196	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1050	{	1197	{
1051	if (!*flag)	1198	if (!*flag)
1052	{	1199	{
1053	int old_errno = errno; /* save errno because write might clobber it */	1200	int old_errno = errno; /* save errno because write might clobber it */
…		…
1066		1213
1067	errno = old_errno;	1214	errno = old_errno;
1068	}	1215	}
1069	}	1216	}
1070		1217
		1218	/* called whenever the libev signal pipe */
		1219	/* got some events (signal, async) */
1071	static void	1220	static void
1072	pipecb (EV_P_ ev_io *iow, int revents)	1221	pipecb (EV_P_ ev_io *iow, int revents)
1073	{	1222	{
1074	#if EV_USE_EVENTFD	1223	#if EV_USE_EVENTFD
1075	if (evfd >= 0)	1224	if (evfd >= 0)
…		…
1131	ev_feed_signal_event (EV_P_ int signum)	1280	ev_feed_signal_event (EV_P_ int signum)
1132	{	1281	{
1133	WL w;	1282	WL w;
1134		1283
1135	#if EV_MULTIPLICITY	1284	#if EV_MULTIPLICITY
1136	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1285	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1137	#endif	1286	#endif
1138		1287
1139	--signum;	1288	--signum;
1140		1289
1141	if (signum < 0 || signum >= signalmax)	1290	if (signum < 0 || signum >= signalmax)
…		…
1145		1294
1146	for (w = signals [signum].head; w; w = w->next)	1295	for (w = signals [signum].head; w; w = w->next)
1147	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1296	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1148	}	1297	}
1149		1298
		1299	#if EV_USE_SIGNALFD
		1300	static void
		1301	sigfdcb (EV_P_ ev_io *iow, int revents)
		1302	{
		1303	struct signalfd_siginfo si[4], *sip;
		1304
		1305	for (;;)
		1306	{
		1307	ssize_t res = read (sigfd, si, sizeof (si));
		1308
		1309	/* not ISO-C, as res might be -1, but works with SuS */
		1310	for (sip = si; (char *)sip < (char *)si + res; ++sip)
		1311	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1312
		1313	if (res < (ssize_t)sizeof (si))
		1314	break;
		1315	}
		1316	}
		1317	#endif
		1318
1150	/*****************************************************************************/	1319	/*****************************************************************************/
1151		1320
1152	static WL childs [EV_PID_HASHSIZE];	1321	static WL childs [EV_PID_HASHSIZE];
1153		1322
1154	#ifndef _WIN32	1323	#ifndef _WIN32
…		…
1157		1326
1158	#ifndef WIFCONTINUED	1327	#ifndef WIFCONTINUED
1159	# define WIFCONTINUED(status) 0	1328	# define WIFCONTINUED(status) 0
1160	#endif	1329	#endif
1161		1330
1162	void inline_speed	1331	/* handle a single child status event */
		1332	inline_speed void
1163	child_reap (EV_P_ int chain, int pid, int status)	1333	child_reap (EV_P_ int chain, int pid, int status)
1164	{	1334	{
1165	ev_child *w;	1335	ev_child *w;
1166	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1336	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1167		1337
…		…
1180		1350
1181	#ifndef WCONTINUED	1351	#ifndef WCONTINUED
1182	# define WCONTINUED 0	1352	# define WCONTINUED 0
1183	#endif	1353	#endif
1184		1354
		1355	/* called on sigchld etc., calls waitpid */
1185	static void	1356	static void
1186	childcb (EV_P_ ev_signal *sw, int revents)	1357	childcb (EV_P_ ev_signal *sw, int revents)
1187	{	1358	{
1188	int pid, status;	1359	int pid, status;
1189		1360
…		…
1270	/* kqueue is borked on everything but netbsd apparently */	1441	/* kqueue is borked on everything but netbsd apparently */
1271	/* it usually doesn't work correctly on anything but sockets and pipes */	1442	/* it usually doesn't work correctly on anything but sockets and pipes */
1272	flags &= ~EVBACKEND_KQUEUE;	1443	flags &= ~EVBACKEND_KQUEUE;
1273	#endif	1444	#endif
1274	#ifdef __APPLE__	1445	#ifdef __APPLE__
1275	// flags &= ~EVBACKEND_KQUEUE & ~EVBACKEND_POLL; for documentation	1446	/* only select works correctly on that "unix-certified" platform */
1276	flags &= ~EVBACKEND_SELECT;	1447	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1448	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1277	#endif	1449	#endif
1278		1450
1279	return flags;	1451	return flags;
1280	}	1452	}
1281		1453
…		…
1295	ev_backend (EV_P)	1467	ev_backend (EV_P)
1296	{	1468	{
1297	return backend;	1469	return backend;
1298	}	1470	}
1299		1471
		1472	#if EV_MINIMAL < 2
1300	unsigned int	1473	unsigned int
1301	ev_loop_count (EV_P)	1474	ev_loop_count (EV_P)
1302	{	1475	{
1303	return loop_count;	1476	return loop_count;
1304	}	1477	}
1305		1478
		1479	unsigned int
		1480	ev_loop_depth (EV_P)
		1481	{
		1482	return loop_depth;
		1483	}
		1484
1306	void	1485	void
1307	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1486	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1308	{	1487	{
1309	io_blocktime = interval;	1488	io_blocktime = interval;
1310	}	1489	}
…		…
1313	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1492	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1314	{	1493	{
1315	timeout_blocktime = interval;	1494	timeout_blocktime = interval;
1316	}	1495	}
1317		1496
		1497	void
		1498	ev_set_userdata (EV_P_ void *data)
		1499	{
		1500	userdata = data;
		1501	}
		1502
		1503	void *
		1504	ev_userdata (EV_P)
		1505	{
		1506	return userdata;
		1507	}
		1508
		1509	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1510	{
		1511	invoke_cb = invoke_pending_cb;
		1512	}
		1513
		1514	void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
		1515	{
		1516	release_cb = release;
		1517	acquire_cb = acquire;
		1518	}
		1519	#endif
		1520
		1521	/* initialise a loop structure, must be zero-initialised */
1318	static void noinline	1522	static void noinline
1319	loop_init (EV_P_ unsigned int flags)	1523	loop_init (EV_P_ unsigned int flags)
1320	{	1524	{
1321	if (!backend)	1525	if (!backend)
1322	{	1526	{
		1527	#if EV_USE_REALTIME
		1528	if (!have_realtime)
		1529	{
		1530	struct timespec ts;
		1531
		1532	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1533	have_realtime = 1;
		1534	}
		1535	#endif
		1536
1323	#if EV_USE_MONOTONIC	1537	#if EV_USE_MONOTONIC
		1538	if (!have_monotonic)
1324	{	1539	{
1325	struct timespec ts;	1540	struct timespec ts;
		1541
1326	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1542	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1327	have_monotonic = 1;	1543	have_monotonic = 1;
1328	}	1544	}
1329	#endif	1545	#endif
1330		1546
1331	ev_rt_now = ev_time ();	1547	ev_rt_now = ev_time ();
1332	mn_now = get_clock ();	1548	mn_now = get_clock ();
1333	now_floor = mn_now;	1549	now_floor = mn_now;
1334	rtmn_diff = ev_rt_now - mn_now;	1550	rtmn_diff = ev_rt_now - mn_now;
		1551	#if EV_MINIMAL < 2
		1552	invoke_cb = ev_invoke_pending;
		1553	#endif
1335		1554
1336	io_blocktime = 0.;	1555	io_blocktime = 0.;
1337	timeout_blocktime = 0.;	1556	timeout_blocktime = 0.;
1338	backend = 0;	1557	backend = 0;
1339	backend_fd = -1;	1558	backend_fd = -1;
1340	gotasync = 0;	1559	gotasync = 0;
1341	#if EV_USE_INOTIFY	1560	#if EV_USE_INOTIFY
1342	fs_fd = -2;	1561	fs_fd = -2;
1343	#endif	1562	#endif
		1563	#if EV_USE_SIGNALFD
		1564	sigfd = -2;
		1565	#endif
1344		1566
1345	/* pid check not overridable via env */	1567	/* pid check not overridable via env */
1346	#ifndef _WIN32	1568	#ifndef _WIN32
1347	if (flags & EVFLAG_FORKCHECK)	1569	if (flags & EVFLAG_FORKCHECK)
1348	curpid = getpid ();	1570	curpid = getpid ();
…		…
1370	#endif	1592	#endif
1371	#if EV_USE_SELECT	1593	#if EV_USE_SELECT
1372	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1594	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1373	#endif	1595	#endif
1374		1596
		1597	ev_prepare_init (&pending_w, pendingcb);
		1598
1375	ev_init (&pipeev, pipecb);	1599	ev_init (&pipe_w, pipecb);
1376	ev_set_priority (&pipeev, EV_MAXPRI);	1600	ev_set_priority (&pipe_w, EV_MAXPRI);
1377	}	1601	}
1378	}	1602	}
1379		1603
		1604	/* free up a loop structure */
1380	static void noinline	1605	static void noinline
1381	loop_destroy (EV_P)	1606	loop_destroy (EV_P)
1382	{	1607	{
1383	int i;	1608	int i;
1384		1609
1385	if (ev_is_active (&pipeev))	1610	if (ev_is_active (&pipe_w))
1386	{	1611	{
1387	ev_ref (EV_A); /* signal watcher */	1612	/*ev_ref (EV_A);*/
1388	ev_io_stop (EV_A_ &pipeev);	1613	/*ev_io_stop (EV_A_ &pipe_w);*/
1389		1614
1390	#if EV_USE_EVENTFD	1615	#if EV_USE_EVENTFD
1391	if (evfd >= 0)	1616	if (evfd >= 0)
1392	close (evfd);	1617	close (evfd);
1393	#endif	1618	#endif
…		…
1397	close (evpipe [0]);	1622	close (evpipe [0]);
1398	close (evpipe [1]);	1623	close (evpipe [1]);
1399	}	1624	}
1400	}	1625	}
1401		1626
		1627	#if EV_USE_SIGNALFD
		1628	if (ev_is_active (&sigfd_w))
		1629	{
		1630	/*ev_ref (EV_A);*/
		1631	/*ev_io_stop (EV_A_ &sigfd_w);*/
		1632
		1633	close (sigfd);
		1634	}
		1635	#endif
		1636
1402	#if EV_USE_INOTIFY	1637	#if EV_USE_INOTIFY
1403	if (fs_fd >= 0)	1638	if (fs_fd >= 0)
1404	close (fs_fd);	1639	close (fs_fd);
1405	#endif	1640	#endif
1406		1641
…		…
1429	#if EV_IDLE_ENABLE	1664	#if EV_IDLE_ENABLE
1430	array_free (idle, [i]);	1665	array_free (idle, [i]);
1431	#endif	1666	#endif
1432	}	1667	}
1433		1668
1434	ev_free (anfds); anfdmax = 0;	1669	ev_free (anfds); anfds = 0; anfdmax = 0;
1435		1670
1436	/* have to use the microsoft-never-gets-it-right macro */	1671	/* have to use the microsoft-never-gets-it-right macro */
		1672	array_free (rfeed, EMPTY);
1437	array_free (fdchange, EMPTY);	1673	array_free (fdchange, EMPTY);
1438	array_free (timer, EMPTY);	1674	array_free (timer, EMPTY);
1439	#if EV_PERIODIC_ENABLE	1675	#if EV_PERIODIC_ENABLE
1440	array_free (periodic, EMPTY);	1676	array_free (periodic, EMPTY);
1441	#endif	1677	#endif
…		…
1450		1686
1451	backend = 0;	1687	backend = 0;
1452	}	1688	}
1453		1689
1454	#if EV_USE_INOTIFY	1690	#if EV_USE_INOTIFY
1455	void inline_size infy_fork (EV_P);	1691	inline_size void infy_fork (EV_P);
1456	#endif	1692	#endif
1457		1693
1458	void inline_size	1694	inline_size void
1459	loop_fork (EV_P)	1695	loop_fork (EV_P)
1460	{	1696	{
1461	#if EV_USE_PORT	1697	#if EV_USE_PORT
1462	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1698	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1463	#endif	1699	#endif
…		…
1469	#endif	1705	#endif
1470	#if EV_USE_INOTIFY	1706	#if EV_USE_INOTIFY
1471	infy_fork (EV_A);	1707	infy_fork (EV_A);
1472	#endif	1708	#endif
1473		1709
1474	if (ev_is_active (&pipeev))	1710	if (ev_is_active (&pipe_w))
1475	{	1711	{
1476	/* this "locks" the handlers against writing to the pipe */	1712	/* this "locks" the handlers against writing to the pipe */
1477	/* while we modify the fd vars */	1713	/* while we modify the fd vars */
1478	gotsig = 1;	1714	gotsig = 1;
1479	#if EV_ASYNC_ENABLE	1715	#if EV_ASYNC_ENABLE
1480	gotasync = 1;	1716	gotasync = 1;
1481	#endif	1717	#endif
1482		1718
1483	ev_ref (EV_A);	1719	ev_ref (EV_A);
1484	ev_io_stop (EV_A_ &pipeev);	1720	ev_io_stop (EV_A_ &pipe_w);
1485		1721
1486	#if EV_USE_EVENTFD	1722	#if EV_USE_EVENTFD
1487	if (evfd >= 0)	1723	if (evfd >= 0)
1488	close (evfd);	1724	close (evfd);
1489	#endif	1725	#endif
…		…
1494	close (evpipe [1]);	1730	close (evpipe [1]);
1495	}	1731	}
1496		1732
1497	evpipe_init (EV_A);	1733	evpipe_init (EV_A);
1498	/* now iterate over everything, in case we missed something */	1734	/* now iterate over everything, in case we missed something */
1499	pipecb (EV_A_ &pipeev, EV_READ);	1735	pipecb (EV_A_ &pipe_w, EV_READ);
1500	}	1736	}
1501		1737
1502	postfork = 0;	1738	postfork = 0;
1503	}	1739	}
1504		1740
…		…
1508	ev_loop_new (unsigned int flags)	1744	ev_loop_new (unsigned int flags)
1509	{	1745	{
1510	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1746	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1511		1747
1512	memset (loop, 0, sizeof (struct ev_loop));	1748	memset (loop, 0, sizeof (struct ev_loop));
1513
1514	loop_init (EV_A_ flags);	1749	loop_init (EV_A_ flags);
1515		1750
1516	if (ev_backend (EV_A))	1751	if (ev_backend (EV_A))
1517	return loop;	1752	return loop;
1518		1753
…		…
1529	void	1764	void
1530	ev_loop_fork (EV_P)	1765	ev_loop_fork (EV_P)
1531	{	1766	{
1532	postfork = 1; /* must be in line with ev_default_fork */	1767	postfork = 1; /* must be in line with ev_default_fork */
1533	}	1768	}
		1769	#endif /* multiplicity */
1534		1770
1535	#if EV_VERIFY	1771	#if EV_VERIFY
1536	static void noinline	1772	static void noinline
1537	verify_watcher (EV_P_ W w)	1773	verify_watcher (EV_P_ W w)
1538	{	1774	{
1539	assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));	1775	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1540		1776
1541	if (w->pending)	1777	if (w->pending)
1542	assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));	1778	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1543	}	1779	}
1544		1780
1545	static void noinline	1781	static void noinline
1546	verify_heap (EV_P_ ANHE *heap, int N)	1782	verify_heap (EV_P_ ANHE *heap, int N)
1547	{	1783	{
1548	int i;	1784	int i;
1549		1785
1550	for (i = HEAP0; i < N + HEAP0; ++i)	1786	for (i = HEAP0; i < N + HEAP0; ++i)
1551	{	1787	{
1552	assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));	1788	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])));	1789	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]))));	1790	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1555		1791
1556	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));	1792	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1557	}	1793	}
1558	}	1794	}
1559		1795
1560	static void noinline	1796	static void noinline
1561	array_verify (EV_P_ W *ws, int cnt)	1797	array_verify (EV_P_ W *ws, int cnt)
1562	{	1798	{
1563	while (cnt--)	1799	while (cnt--)
1564	{	1800	{
1565	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));	1801	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1566	verify_watcher (EV_A_ ws [cnt]);	1802	verify_watcher (EV_A_ ws [cnt]);
1567	}	1803	}
1568	}	1804	}
1569	#endif	1805	#endif
1570		1806
		1807	#if EV_MINIMAL < 2
1571	void	1808	void
1572	ev_loop_verify (EV_P)	1809	ev_loop_verify (EV_P)
1573	{	1810	{
1574	#if EV_VERIFY	1811	#if EV_VERIFY
1575	int i;	1812	int i;
…		…
1577		1814
1578	assert (activecnt >= -1);	1815	assert (activecnt >= -1);
1579		1816
1580	assert (fdchangemax >= fdchangecnt);	1817	assert (fdchangemax >= fdchangecnt);
1581	for (i = 0; i < fdchangecnt; ++i)	1818	for (i = 0; i < fdchangecnt; ++i)
1582	assert (("negative fd in fdchanges", fdchanges [i] >= 0));	1819	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1583		1820
1584	assert (anfdmax >= 0);	1821	assert (anfdmax >= 0);
1585	for (i = 0; i < anfdmax; ++i)	1822	for (i = 0; i < anfdmax; ++i)
1586	for (w = anfds [i].head; w; w = w->next)	1823	for (w = anfds [i].head; w; w = w->next)
1587	{	1824	{
1588	verify_watcher (EV_A_ (W)w);	1825	verify_watcher (EV_A_ (W)w);
1589	assert (("inactive fd watcher on anfd list", ev_active (w) == 1));	1826	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));	1827	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1591	}	1828	}
1592		1829
1593	assert (timermax >= timercnt);	1830	assert (timermax >= timercnt);
1594	verify_heap (EV_A_ timers, timercnt);	1831	verify_heap (EV_A_ timers, timercnt);
1595		1832
…		…
1628	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1865	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)	1866	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1630	# endif	1867	# endif
1631	#endif	1868	#endif
1632	}	1869	}
1633		1870	#endif
1634	#endif /* multiplicity */
1635		1871
1636	#if EV_MULTIPLICITY	1872	#if EV_MULTIPLICITY
1637	struct ev_loop *	1873	struct ev_loop *
1638	ev_default_loop_init (unsigned int flags)	1874	ev_default_loop_init (unsigned int flags)
1639	#else	1875	#else
…		…
1700	ev_invoke (EV_P_ void *w, int revents)	1936	ev_invoke (EV_P_ void *w, int revents)
1701	{	1937	{
1702	EV_CB_INVOKE ((W)w, revents);	1938	EV_CB_INVOKE ((W)w, revents);
1703	}	1939	}
1704		1940
1705	void inline_speed	1941	unsigned int
1706	call_pending (EV_P)	1942	ev_pending_count (EV_P)
		1943	{
		1944	int pri;
		1945	unsigned int count = 0;
		1946
		1947	for (pri = NUMPRI; pri--; )
		1948	count += pendingcnt [pri];
		1949
		1950	return count;
		1951	}
		1952
		1953	void noinline
		1954	ev_invoke_pending (EV_P)
1707	{	1955	{
1708	int pri;	1956	int pri;
1709		1957
1710	for (pri = NUMPRI; pri--; )	1958	for (pri = NUMPRI; pri--; )
1711	while (pendingcnt [pri])	1959	while (pendingcnt [pri])
1712	{	1960	{
1713	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1961	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1714		1962
1715	if (expect_true (p->w))
1716	{
1717	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1963	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1964	/* ^ this is no longer true, as pending_w could be here */
1718		1965
1719	p->w->pending = 0;	1966	p->w->pending = 0;
1720	EV_CB_INVOKE (p->w, p->events);	1967	EV_CB_INVOKE (p->w, p->events);
1721	EV_FREQUENT_CHECK;	1968	EV_FREQUENT_CHECK;
1722	}
1723	}	1969	}
1724	}	1970	}
1725		1971
1726	#if EV_IDLE_ENABLE	1972	#if EV_IDLE_ENABLE
1727	void inline_size	1973	/* make idle watchers pending. this handles the "call-idle */
		1974	/* only when higher priorities are idle" logic */
		1975	inline_size void
1728	idle_reify (EV_P)	1976	idle_reify (EV_P)
1729	{	1977	{
1730	if (expect_false (idleall))	1978	if (expect_false (idleall))
1731	{	1979	{
1732	int pri;	1980	int pri;
…		…
1744	}	1992	}
1745	}	1993	}
1746	}	1994	}
1747	#endif	1995	#endif
1748		1996
1749	void inline_size	1997	/* make timers pending */
		1998	inline_size void
1750	timers_reify (EV_P)	1999	timers_reify (EV_P)
1751	{	2000	{
1752	EV_FREQUENT_CHECK;	2001	EV_FREQUENT_CHECK;
1753		2002
1754	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	2003	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1755	{	2004	{
1756	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	2005	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	{	2006	{
		2007	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		2008
		2009	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		2010
		2011	/* first reschedule or stop timer */
		2012	if (w->repeat)
		2013	{
1763	ev_at (w) += w->repeat;	2014	ev_at (w) += w->repeat;
1764	if (ev_at (w) < mn_now)	2015	if (ev_at (w) < mn_now)
1765	ev_at (w) = mn_now;	2016	ev_at (w) = mn_now;
1766		2017
1767	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	2018	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1768		2019
1769	ANHE_at_cache (timers [HEAP0]);	2020	ANHE_at_cache (timers [HEAP0]);
1770	downheap (timers, timercnt, HEAP0);	2021	downheap (timers, timercnt, HEAP0);
		2022	}
		2023	else
		2024	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		2025
		2026	EV_FREQUENT_CHECK;
		2027	feed_reverse (EV_A_ (W)w);
1771	}	2028	}
1772	else	2029	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1773	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1774		2030
1775	EV_FREQUENT_CHECK;
1776	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	2031	feed_reverse_done (EV_A_ EV_TIMEOUT);
1777	}	2032	}
1778	}	2033	}
1779		2034
1780	#if EV_PERIODIC_ENABLE	2035	#if EV_PERIODIC_ENABLE
1781	void inline_size	2036	/* make periodics pending */
		2037	inline_size void
1782	periodics_reify (EV_P)	2038	periodics_reify (EV_P)
1783	{	2039	{
1784	EV_FREQUENT_CHECK;	2040	EV_FREQUENT_CHECK;
1785		2041
1786	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	2042	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1787	{	2043	{
1788	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	2044	int feed_count = 0;
1789		2045
1790	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	2046	do
1791
1792	/* first reschedule or stop timer */
1793	if (w->reschedule_cb)
1794	{	2047	{
		2048	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		2049
		2050	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		2051
		2052	/* first reschedule or stop timer */
		2053	if (w->reschedule_cb)
		2054	{
1795	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2055	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1796		2056
1797	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));	2057	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1798		2058
1799	ANHE_at_cache (periodics [HEAP0]);	2059	ANHE_at_cache (periodics [HEAP0]);
1800	downheap (periodics, periodiccnt, HEAP0);	2060	downheap (periodics, periodiccnt, HEAP0);
		2061	}
		2062	else if (w->interval)
		2063	{
		2064	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2065	/* if next trigger time is not sufficiently in the future, put it there */
		2066	/* this might happen because of floating point inexactness */
		2067	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		2068	{
		2069	ev_at (w) += w->interval;
		2070
		2071	/* if interval is unreasonably low we might still have a time in the past */
		2072	/* so correct this. this will make the periodic very inexact, but the user */
		2073	/* has effectively asked to get triggered more often than possible */
		2074	if (ev_at (w) < ev_rt_now)
		2075	ev_at (w) = ev_rt_now;
		2076	}
		2077
		2078	ANHE_at_cache (periodics [HEAP0]);
		2079	downheap (periodics, periodiccnt, HEAP0);
		2080	}
		2081	else
		2082	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		2083
		2084	EV_FREQUENT_CHECK;
		2085	feed_reverse (EV_A_ (W)w);
1801	}	2086	}
1802	else if (w->interval)	2087	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		2088
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);	2089	feed_reverse_done (EV_A_ EV_PERIODIC);
1826	}	2090	}
1827	}	2091	}
1828		2092
		2093	/* simply recalculate all periodics */
		2094	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1829	static void noinline	2095	static void noinline
1830	periodics_reschedule (EV_P)	2096	periodics_reschedule (EV_P)
1831	{	2097	{
1832	int i;	2098	int i;
1833		2099
…		…
1846		2112
1847	reheap (periodics, periodiccnt);	2113	reheap (periodics, periodiccnt);
1848	}	2114	}
1849	#endif	2115	#endif
1850		2116
1851	void inline_speed	2117	/* adjust all timers by a given offset */
		2118	static void noinline
		2119	timers_reschedule (EV_P_ ev_tstamp adjust)
		2120	{
		2121	int i;
		2122
		2123	for (i = 0; i < timercnt; ++i)
		2124	{
		2125	ANHE *he = timers + i + HEAP0;
		2126	ANHE_w (*he)->at += adjust;
		2127	ANHE_at_cache (*he);
		2128	}
		2129	}
		2130
		2131	/* fetch new monotonic and realtime times from the kernel */
		2132	/* also detetc if there was a timejump, and act accordingly */
		2133	inline_speed void
1852	time_update (EV_P_ ev_tstamp max_block)	2134	time_update (EV_P_ ev_tstamp max_block)
1853	{	2135	{
1854	int i;
1855
1856	#if EV_USE_MONOTONIC	2136	#if EV_USE_MONOTONIC
1857	if (expect_true (have_monotonic))	2137	if (expect_true (have_monotonic))
1858	{	2138	{
		2139	int i;
1859	ev_tstamp odiff = rtmn_diff;	2140	ev_tstamp odiff = rtmn_diff;
1860		2141
1861	mn_now = get_clock ();	2142	mn_now = get_clock ();
1862		2143
1863	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2144	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1889	ev_rt_now = ev_time ();	2170	ev_rt_now = ev_time ();
1890	mn_now = get_clock ();	2171	mn_now = get_clock ();
1891	now_floor = mn_now;	2172	now_floor = mn_now;
1892	}	2173	}
1893		2174
		2175	/* no timer adjustment, as the monotonic clock doesn't jump */
		2176	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1894	# if EV_PERIODIC_ENABLE	2177	# if EV_PERIODIC_ENABLE
1895	periodics_reschedule (EV_A);	2178	periodics_reschedule (EV_A);
1896	# endif	2179	# endif
1897	/* no timer adjustment, as the monotonic clock doesn't jump */
1898	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1899	}	2180	}
1900	else	2181	else
1901	#endif	2182	#endif
1902	{	2183	{
1903	ev_rt_now = ev_time ();	2184	ev_rt_now = ev_time ();
1904		2185
1905	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2186	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1906	{	2187	{
		2188	/* adjust timers. this is easy, as the offset is the same for all of them */
		2189	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1907	#if EV_PERIODIC_ENABLE	2190	#if EV_PERIODIC_ENABLE
1908	periodics_reschedule (EV_A);	2191	periodics_reschedule (EV_A);
1909	#endif	2192	#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	}	2193	}
1918		2194
1919	mn_now = ev_rt_now;	2195	mn_now = ev_rt_now;
1920	}	2196	}
1921	}	2197	}
1922		2198
1923	void	2199	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)	2200	ev_loop (EV_P_ int flags)
1945	{	2201	{
		2202	#if EV_MINIMAL < 2
		2203	++loop_depth;
		2204	#endif
		2205
		2206	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2207
1946	loop_done = EVUNLOOP_CANCEL;	2208	loop_done = EVUNLOOP_CANCEL;
1947		2209
1948	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2210	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1949		2211
1950	do	2212	do
1951	{	2213	{
1952	#if EV_VERIFY >= 2	2214	#if EV_VERIFY >= 2
1953	ev_loop_verify (EV_A);	2215	ev_loop_verify (EV_A);
…		…
1966	/* we might have forked, so queue fork handlers */	2228	/* we might have forked, so queue fork handlers */
1967	if (expect_false (postfork))	2229	if (expect_false (postfork))
1968	if (forkcnt)	2230	if (forkcnt)
1969	{	2231	{
1970	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2232	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1971	call_pending (EV_A);	2233	EV_INVOKE_PENDING;
1972	}	2234	}
1973	#endif	2235	#endif
1974		2236
1975	/* queue prepare watchers (and execute them) */	2237	/* queue prepare watchers (and execute them) */
1976	if (expect_false (preparecnt))	2238	if (expect_false (preparecnt))
1977	{	2239	{
1978	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2240	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1979	call_pending (EV_A);	2241	EV_INVOKE_PENDING;
1980	}	2242	}
1981		2243
1982	if (expect_false (!activecnt))	2244	if (expect_false (loop_done))
1983	break;	2245	break;
1984		2246
1985	/* we might have forked, so reify kernel state if necessary */	2247	/* we might have forked, so reify kernel state if necessary */
1986	if (expect_false (postfork))	2248	if (expect_false (postfork))
1987	loop_fork (EV_A);	2249	loop_fork (EV_A);
…		…
1994	ev_tstamp waittime = 0.;	2256	ev_tstamp waittime = 0.;
1995	ev_tstamp sleeptime = 0.;	2257	ev_tstamp sleeptime = 0.;
1996		2258
1997	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2259	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1998	{	2260	{
		2261	/* remember old timestamp for io_blocktime calculation */
		2262	ev_tstamp prev_mn_now = mn_now;
		2263
1999	/* update time to cancel out callback processing overhead */	2264	/* update time to cancel out callback processing overhead */
2000	time_update (EV_A_ 1e100);	2265	time_update (EV_A_ 1e100);
2001		2266
2002	waittime = MAX_BLOCKTIME;	2267	waittime = MAX_BLOCKTIME;
2003		2268
…		…
2013	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2278	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
2014	if (waittime > to) waittime = to;	2279	if (waittime > to) waittime = to;
2015	}	2280	}
2016	#endif	2281	#endif
2017		2282
		2283	/* don't let timeouts decrease the waittime below timeout_blocktime */
2018	if (expect_false (waittime < timeout_blocktime))	2284	if (expect_false (waittime < timeout_blocktime))
2019	waittime = timeout_blocktime;	2285	waittime = timeout_blocktime;
2020		2286
2021	sleeptime = waittime - backend_fudge;	2287	/* extra check because io_blocktime is commonly 0 */
2022
2023	if (expect_true (sleeptime > io_blocktime))	2288	if (expect_false (io_blocktime))
2024	sleeptime = io_blocktime;
2025
2026	if (sleeptime)
2027	{	2289	{
		2290	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2291
		2292	if (sleeptime > waittime - backend_fudge)
		2293	sleeptime = waittime - backend_fudge;
		2294
		2295	if (expect_true (sleeptime > 0.))
		2296	{
2028	ev_sleep (sleeptime);	2297	ev_sleep (sleeptime);
2029	waittime -= sleeptime;	2298	waittime -= sleeptime;
		2299	}
2030	}	2300	}
2031	}	2301	}
2032		2302
		2303	#if EV_MINIMAL < 2
2033	++loop_count;	2304	++loop_count;
		2305	#endif
		2306	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2034	backend_poll (EV_A_ waittime);	2307	backend_poll (EV_A_ waittime);
		2308	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2035		2309
2036	/* update ev_rt_now, do magic */	2310	/* update ev_rt_now, do magic */
2037	time_update (EV_A_ waittime + sleeptime);	2311	time_update (EV_A_ waittime + sleeptime);
2038	}	2312	}
2039		2313
…		…
2050		2324
2051	/* queue check watchers, to be executed first */	2325	/* queue check watchers, to be executed first */
2052	if (expect_false (checkcnt))	2326	if (expect_false (checkcnt))
2053	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2327	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2054		2328
2055	call_pending (EV_A);	2329	EV_INVOKE_PENDING;
2056	}	2330	}
2057	while (expect_true (	2331	while (expect_true (
2058	activecnt	2332	activecnt
2059	&& !loop_done	2333	&& !loop_done
2060	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2334	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2061	));	2335	));
2062		2336
2063	if (loop_done == EVUNLOOP_ONE)	2337	if (loop_done == EVUNLOOP_ONE)
2064	loop_done = EVUNLOOP_CANCEL;	2338	loop_done = EVUNLOOP_CANCEL;
		2339
		2340	#if EV_MINIMAL < 2
		2341	--loop_depth;
		2342	#endif
2065	}	2343	}
2066		2344
2067	void	2345	void
2068	ev_unloop (EV_P_ int how)	2346	ev_unloop (EV_P_ int how)
2069	{	2347	{
2070	loop_done = how;	2348	loop_done = how;
2071	}	2349	}
2072		2350
		2351	void
		2352	ev_ref (EV_P)
		2353	{
		2354	++activecnt;
		2355	}
		2356
		2357	void
		2358	ev_unref (EV_P)
		2359	{
		2360	--activecnt;
		2361	}
		2362
		2363	void
		2364	ev_now_update (EV_P)
		2365	{
		2366	time_update (EV_A_ 1e100);
		2367	}
		2368
		2369	void
		2370	ev_suspend (EV_P)
		2371	{
		2372	ev_now_update (EV_A);
		2373	}
		2374
		2375	void
		2376	ev_resume (EV_P)
		2377	{
		2378	ev_tstamp mn_prev = mn_now;
		2379
		2380	ev_now_update (EV_A);
		2381	timers_reschedule (EV_A_ mn_now - mn_prev);
		2382	#if EV_PERIODIC_ENABLE
		2383	/* TODO: really do this? */
		2384	periodics_reschedule (EV_A);
		2385	#endif
		2386	}
		2387
2073	/*****************************************************************************/	2388	/*****************************************************************************/
		2389	/* singly-linked list management, used when the expected list length is short */
2074		2390
2075	void inline_size	2391	inline_size void
2076	wlist_add (WL *head, WL elem)	2392	wlist_add (WL *head, WL elem)
2077	{	2393	{
2078	elem->next = *head;	2394	elem->next = *head;
2079	*head = elem;	2395	*head = elem;
2080	}	2396	}
2081		2397
2082	void inline_size	2398	inline_size void
2083	wlist_del (WL *head, WL elem)	2399	wlist_del (WL *head, WL elem)
2084	{	2400	{
2085	while (*head)	2401	while (*head)
2086	{	2402	{
2087	if (*head == elem)	2403	if (*head == elem)
…		…
2092		2408
2093	head = &(*head)->next;	2409	head = &(*head)->next;
2094	}	2410	}
2095	}	2411	}
2096		2412
2097	void inline_speed	2413	/* internal, faster, version of ev_clear_pending */
		2414	inline_speed void
2098	clear_pending (EV_P_ W w)	2415	clear_pending (EV_P_ W w)
2099	{	2416	{
2100	if (w->pending)	2417	if (w->pending)
2101	{	2418	{
2102	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2419	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2103	w->pending = 0;	2420	w->pending = 0;
2104	}	2421	}
2105	}	2422	}
2106		2423
2107	int	2424	int
…		…
2111	int pending = w_->pending;	2428	int pending = w_->pending;
2112		2429
2113	if (expect_true (pending))	2430	if (expect_true (pending))
2114	{	2431	{
2115	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2432	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2433	p->w = (W)&pending_w;
2116	w_->pending = 0;	2434	w_->pending = 0;
2117	p->w = 0;
2118	return p->events;	2435	return p->events;
2119	}	2436	}
2120	else	2437	else
2121	return 0;	2438	return 0;
2122	}	2439	}
2123		2440
2124	void inline_size	2441	inline_size void
2125	pri_adjust (EV_P_ W w)	2442	pri_adjust (EV_P_ W w)
2126	{	2443	{
2127	int pri = w->priority;	2444	int pri = ev_priority (w);
2128	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2445	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2129	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2446	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2130	w->priority = pri;	2447	ev_set_priority (w, pri);
2131	}	2448	}
2132		2449
2133	void inline_speed	2450	inline_speed void
2134	ev_start (EV_P_ W w, int active)	2451	ev_start (EV_P_ W w, int active)
2135	{	2452	{
2136	pri_adjust (EV_A_ w);	2453	pri_adjust (EV_A_ w);
2137	w->active = active;	2454	w->active = active;
2138	ev_ref (EV_A);	2455	ev_ref (EV_A);
2139	}	2456	}
2140		2457
2141	void inline_size	2458	inline_size void
2142	ev_stop (EV_P_ W w)	2459	ev_stop (EV_P_ W w)
2143	{	2460	{
2144	ev_unref (EV_A);	2461	ev_unref (EV_A);
2145	w->active = 0;	2462	w->active = 0;
2146	}	2463	}
…		…
2153	int fd = w->fd;	2470	int fd = w->fd;
2154		2471
2155	if (expect_false (ev_is_active (w)))	2472	if (expect_false (ev_is_active (w)))
2156	return;	2473	return;
2157		2474
2158	assert (("ev_io_start called with negative fd", fd >= 0));	2475	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))));	2476	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2160		2477
2161	EV_FREQUENT_CHECK;	2478	EV_FREQUENT_CHECK;
2162		2479
2163	ev_start (EV_A_ (W)w, 1);	2480	ev_start (EV_A_ (W)w, 1);
2164	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2481	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2165	wlist_add (&anfds[fd].head, (WL)w);	2482	wlist_add (&anfds[fd].head, (WL)w);
2166		2483
2167	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2484	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2168	w->events &= ~EV_IOFDSET;	2485	w->events &= ~EV__IOFDSET;
2169		2486
2170	EV_FREQUENT_CHECK;	2487	EV_FREQUENT_CHECK;
2171	}	2488	}
2172		2489
2173	void noinline	2490	void noinline
…		…
2175	{	2492	{
2176	clear_pending (EV_A_ (W)w);	2493	clear_pending (EV_A_ (W)w);
2177	if (expect_false (!ev_is_active (w)))	2494	if (expect_false (!ev_is_active (w)))
2178	return;	2495	return;
2179		2496
2180	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2497	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2181		2498
2182	EV_FREQUENT_CHECK;	2499	EV_FREQUENT_CHECK;
2183		2500
2184	wlist_del (&anfds[w->fd].head, (WL)w);	2501	wlist_del (&anfds[w->fd].head, (WL)w);
2185	ev_stop (EV_A_ (W)w);	2502	ev_stop (EV_A_ (W)w);
…		…
2195	if (expect_false (ev_is_active (w)))	2512	if (expect_false (ev_is_active (w)))
2196	return;	2513	return;
2197		2514
2198	ev_at (w) += mn_now;	2515	ev_at (w) += mn_now;
2199		2516
2200	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2517	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2201		2518
2202	EV_FREQUENT_CHECK;	2519	EV_FREQUENT_CHECK;
2203		2520
2204	++timercnt;	2521	++timercnt;
2205	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);	2522	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
…		…
2208	ANHE_at_cache (timers [ev_active (w)]);	2525	ANHE_at_cache (timers [ev_active (w)]);
2209	upheap (timers, ev_active (w));	2526	upheap (timers, ev_active (w));
2210		2527
2211	EV_FREQUENT_CHECK;	2528	EV_FREQUENT_CHECK;
2212		2529
2213	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2530	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2214	}	2531	}
2215		2532
2216	void noinline	2533	void noinline
2217	ev_timer_stop (EV_P_ ev_timer *w)	2534	ev_timer_stop (EV_P_ ev_timer *w)
2218	{	2535	{
…		…
2223	EV_FREQUENT_CHECK;	2540	EV_FREQUENT_CHECK;
2224		2541
2225	{	2542	{
2226	int active = ev_active (w);	2543	int active = ev_active (w);
2227		2544
2228	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2545	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2229		2546
2230	--timercnt;	2547	--timercnt;
2231		2548
2232	if (expect_true (active < timercnt + HEAP0))	2549	if (expect_true (active < timercnt + HEAP0))
2233	{	2550	{
…		…
2266	}	2583	}
2267		2584
2268	EV_FREQUENT_CHECK;	2585	EV_FREQUENT_CHECK;
2269	}	2586	}
2270		2587
		2588	ev_tstamp
		2589	ev_timer_remaining (EV_P_ ev_timer *w)
		2590	{
		2591	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
		2592	}
		2593
2271	#if EV_PERIODIC_ENABLE	2594	#if EV_PERIODIC_ENABLE
2272	void noinline	2595	void noinline
2273	ev_periodic_start (EV_P_ ev_periodic *w)	2596	ev_periodic_start (EV_P_ ev_periodic *w)
2274	{	2597	{
2275	if (expect_false (ev_is_active (w)))	2598	if (expect_false (ev_is_active (w)))
…		…
2277		2600
2278	if (w->reschedule_cb)	2601	if (w->reschedule_cb)
2279	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2602	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2280	else if (w->interval)	2603	else if (w->interval)
2281	{	2604	{
2282	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2605	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 */	2606	/* 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;	2607	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2285	}	2608	}
2286	else	2609	else
2287	ev_at (w) = w->offset;	2610	ev_at (w) = w->offset;
…		…
2295	ANHE_at_cache (periodics [ev_active (w)]);	2618	ANHE_at_cache (periodics [ev_active (w)]);
2296	upheap (periodics, ev_active (w));	2619	upheap (periodics, ev_active (w));
2297		2620
2298	EV_FREQUENT_CHECK;	2621	EV_FREQUENT_CHECK;
2299		2622
2300	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2623	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2301	}	2624	}
2302		2625
2303	void noinline	2626	void noinline
2304	ev_periodic_stop (EV_P_ ev_periodic *w)	2627	ev_periodic_stop (EV_P_ ev_periodic *w)
2305	{	2628	{
…		…
2310	EV_FREQUENT_CHECK;	2633	EV_FREQUENT_CHECK;
2311		2634
2312	{	2635	{
2313	int active = ev_active (w);	2636	int active = ev_active (w);
2314		2637
2315	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2638	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2316		2639
2317	--periodiccnt;	2640	--periodiccnt;
2318		2641
2319	if (expect_true (active < periodiccnt + HEAP0))	2642	if (expect_true (active < periodiccnt + HEAP0))
2320	{	2643	{
…		…
2343		2666
2344	void noinline	2667	void noinline
2345	ev_signal_start (EV_P_ ev_signal *w)	2668	ev_signal_start (EV_P_ ev_signal *w)
2346	{	2669	{
2347	#if EV_MULTIPLICITY	2670	#if EV_MULTIPLICITY
2348	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2671	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2349	#endif	2672	#endif
2350	if (expect_false (ev_is_active (w)))	2673	if (expect_false (ev_is_active (w)))
2351	return;	2674	return;
2352		2675
2353	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2676	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2354		2677
		2678	EV_FREQUENT_CHECK;
		2679
		2680	#if EV_USE_SIGNALFD
		2681	if (sigfd == -2)
		2682	{
		2683	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
		2684	if (sigfd < 0 && errno == EINVAL)
		2685	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
		2686
		2687	if (sigfd >= 0)
		2688	{
		2689	fd_intern (sigfd); /* doing it twice will not hurt */
		2690
		2691	sigemptyset (&sigfd_set);
		2692
		2693	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2694	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2695	ev_io_start (EV_A_ &sigfd_w);
		2696	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2697	}
		2698	}
		2699
		2700	if (sigfd >= 0)
		2701	{
		2702	/* TODO: check .head */
		2703	sigaddset (&sigfd_set, w->signum);
		2704	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2705
		2706	signalfd (sigfd, &sigfd_set, 0);
		2707	}
		2708	else
		2709	#endif
2355	evpipe_init (EV_A);	2710	evpipe_init (EV_A);
2356
2357	EV_FREQUENT_CHECK;
2358		2711
2359	{	2712	{
2360	#ifndef _WIN32	2713	#ifndef _WIN32
2361	sigset_t full, prev;	2714	sigset_t full, prev;
2362	sigfillset (&full);	2715	sigfillset (&full);
…		…
2364	#endif	2717	#endif
2365		2718
2366	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);	2719	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2367		2720
2368	#ifndef _WIN32	2721	#ifndef _WIN32
		2722	# if EV_USE_SIGNALFD
		2723	if (sigfd < 0)/*TODO*/
		2724	# endif
		2725	sigdelset (&prev, w->signum);
2369	sigprocmask (SIG_SETMASK, &prev, 0);	2726	sigprocmask (SIG_SETMASK, &prev, 0);
2370	#endif	2727	#endif
2371	}	2728	}
2372		2729
2373	ev_start (EV_A_ (W)w, 1);	2730	ev_start (EV_A_ (W)w, 1);
…		…
2376	if (!((WL)w)->next)	2733	if (!((WL)w)->next)
2377	{	2734	{
2378	#if _WIN32	2735	#if _WIN32
2379	signal (w->signum, ev_sighandler);	2736	signal (w->signum, ev_sighandler);
2380	#else	2737	#else
		2738	# if EV_USE_SIGNALFD
		2739	if (sigfd < 0) /*TODO*/
		2740	# endif
		2741	{
2381	struct sigaction sa;	2742	struct sigaction sa = { };
2382	sa.sa_handler = ev_sighandler;	2743	sa.sa_handler = ev_sighandler;
2383	sigfillset (&sa.sa_mask);	2744	sigfillset (&sa.sa_mask);
2384	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2745	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2385	sigaction (w->signum, &sa, 0);	2746	sigaction (w->signum, &sa, 0);
		2747	}
2386	#endif	2748	#endif
2387	}	2749	}
2388		2750
2389	EV_FREQUENT_CHECK;	2751	EV_FREQUENT_CHECK;
2390	}	2752	}
…		…
2400		2762
2401	wlist_del (&signals [w->signum - 1].head, (WL)w);	2763	wlist_del (&signals [w->signum - 1].head, (WL)w);
2402	ev_stop (EV_A_ (W)w);	2764	ev_stop (EV_A_ (W)w);
2403		2765
2404	if (!signals [w->signum - 1].head)	2766	if (!signals [w->signum - 1].head)
		2767	#if EV_USE_SIGNALFD
		2768	if (sigfd >= 0)
		2769	{
		2770	sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D
		2771	sigdelset (&sigfd_set, w->signum);
		2772	signalfd (sigfd, &sigfd_set, 0);
		2773	sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D
		2774	/*TODO: maybe unblock signal? */
		2775	}
		2776	else
		2777	#endif
2405	signal (w->signum, SIG_DFL);	2778	signal (w->signum, SIG_DFL);
2406		2779
2407	EV_FREQUENT_CHECK;	2780	EV_FREQUENT_CHECK;
2408	}	2781	}
2409		2782
2410	void	2783	void
2411	ev_child_start (EV_P_ ev_child *w)	2784	ev_child_start (EV_P_ ev_child *w)
2412	{	2785	{
2413	#if EV_MULTIPLICITY	2786	#if EV_MULTIPLICITY
2414	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2787	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2415	#endif	2788	#endif
2416	if (expect_false (ev_is_active (w)))	2789	if (expect_false (ev_is_active (w)))
2417	return;	2790	return;
2418		2791
2419	EV_FREQUENT_CHECK;	2792	EV_FREQUENT_CHECK;
…		…
2571		2944
2572	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2945	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2573	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2946	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2574	}	2947	}
2575		2948
2576	void inline_size	2949	inline_size void
2577	check_2625 (EV_P)	2950	check_2625 (EV_P)
2578	{	2951	{
2579	/* kernels < 2.6.25 are borked	2952	/* kernels < 2.6.25 are borked
2580	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html	2953	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2581	*/	2954	*/
…		…
2594	return;	2967	return;
2595		2968
2596	fs_2625 = 1;	2969	fs_2625 = 1;
2597	}	2970	}
2598		2971
2599	void inline_size	2972	inline_size void
2600	infy_init (EV_P)	2973	infy_init (EV_P)
2601	{	2974	{
2602	if (fs_fd != -2)	2975	if (fs_fd != -2)
2603	return;	2976	return;
2604		2977
…		…
2614	ev_set_priority (&fs_w, EV_MAXPRI);	2987	ev_set_priority (&fs_w, EV_MAXPRI);
2615	ev_io_start (EV_A_ &fs_w);	2988	ev_io_start (EV_A_ &fs_w);
2616	}	2989	}
2617	}	2990	}
2618		2991
2619	void inline_size	2992	inline_size void
2620	infy_fork (EV_P)	2993	infy_fork (EV_P)
2621	{	2994	{
2622	int slot;	2995	int slot;
2623		2996
2624	if (fs_fd < 0)	2997	if (fs_fd < 0)
…		…
2905	static void	3278	static void
2906	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)	3279	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2907	{	3280	{
2908	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));	3281	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2909		3282
		3283	ev_embed_stop (EV_A_ w);
		3284
2910	{	3285	{
2911	struct ev_loop *loop = w->other;	3286	struct ev_loop *loop = w->other;
2912		3287
2913	ev_loop_fork (EV_A);	3288	ev_loop_fork (EV_A);
		3289	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2914	}	3290	}
		3291
		3292	ev_embed_start (EV_A_ w);
2915	}	3293	}
2916		3294
2917	#if 0	3295	#if 0
2918	static void	3296	static void
2919	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3297	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
…		…
2928	if (expect_false (ev_is_active (w)))	3306	if (expect_false (ev_is_active (w)))
2929	return;	3307	return;
2930		3308
2931	{	3309	{
2932	struct ev_loop *loop = w->other;	3310	struct ev_loop *loop = w->other;
2933	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3311	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2934	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3312	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2935	}	3313	}
2936		3314
2937	EV_FREQUENT_CHECK;	3315	EV_FREQUENT_CHECK;
2938		3316
…		…
3121	ev_timer_set (&once->to, timeout, 0.);	3499	ev_timer_set (&once->to, timeout, 0.);
3122	ev_timer_start (EV_A_ &once->to);	3500	ev_timer_start (EV_A_ &once->to);
3123	}	3501	}
3124	}	3502	}
3125		3503
		3504	/*****************************************************************************/
		3505
		3506	#if EV_WALK_ENABLE
		3507	void
		3508	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3509	{
		3510	int i, j;
		3511	ev_watcher_list *wl, *wn;
		3512
		3513	if (types & (EV_IO | EV_EMBED))
		3514	for (i = 0; i < anfdmax; ++i)
		3515	for (wl = anfds [i].head; wl; )
		3516	{
		3517	wn = wl->next;
		3518
		3519	#if EV_EMBED_ENABLE
		3520	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3521	{
		3522	if (types & EV_EMBED)
		3523	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3524	}
		3525	else
		3526	#endif
		3527	#if EV_USE_INOTIFY
		3528	if (ev_cb ((ev_io *)wl) == infy_cb)
		3529	;
		3530	else
		3531	#endif
		3532	if ((ev_io *)wl != &pipe_w)
		3533	if (types & EV_IO)
		3534	cb (EV_A_ EV_IO, wl);
		3535
		3536	wl = wn;
		3537	}
		3538
		3539	if (types & (EV_TIMER | EV_STAT))
		3540	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3541	#if EV_STAT_ENABLE
		3542	/*TODO: timer is not always active*/
		3543	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3544	{
		3545	if (types & EV_STAT)
		3546	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3547	}
		3548	else
		3549	#endif
		3550	if (types & EV_TIMER)
		3551	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3552
		3553	#if EV_PERIODIC_ENABLE
		3554	if (types & EV_PERIODIC)
		3555	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3556	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3557	#endif
		3558
		3559	#if EV_IDLE_ENABLE
		3560	if (types & EV_IDLE)
		3561	for (j = NUMPRI; i--; )
		3562	for (i = idlecnt [j]; i--; )
		3563	cb (EV_A_ EV_IDLE, idles [j][i]);
		3564	#endif
		3565
		3566	#if EV_FORK_ENABLE
		3567	if (types & EV_FORK)
		3568	for (i = forkcnt; i--; )
		3569	if (ev_cb (forks [i]) != embed_fork_cb)
		3570	cb (EV_A_ EV_FORK, forks [i]);
		3571	#endif
		3572
		3573	#if EV_ASYNC_ENABLE
		3574	if (types & EV_ASYNC)
		3575	for (i = asynccnt; i--; )
		3576	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3577	#endif
		3578
		3579	if (types & EV_PREPARE)
		3580	for (i = preparecnt; i--; )
		3581	#if EV_EMBED_ENABLE
		3582	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3583	#endif
		3584	cb (EV_A_ EV_PREPARE, prepares [i]);
		3585
		3586	if (types & EV_CHECK)
		3587	for (i = checkcnt; i--; )
		3588	cb (EV_A_ EV_CHECK, checks [i]);
		3589
		3590	if (types & EV_SIGNAL)
		3591	for (i = 0; i < signalmax; ++i)
		3592	for (wl = signals [i].head; wl; )
		3593	{
		3594	wn = wl->next;
		3595	cb (EV_A_ EV_SIGNAL, wl);
		3596	wl = wn;
		3597	}
		3598
		3599	if (types & EV_CHILD)
		3600	for (i = EV_PID_HASHSIZE; i--; )
		3601	for (wl = childs [i]; wl; )
		3602	{
		3603	wn = wl->next;
		3604	cb (EV_A_ EV_CHILD, wl);
		3605	wl = wn;
		3606	}
		3607	/* EV_STAT 0x00001000 /* stat data changed */
		3608	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3609	}
		3610	#endif
		3611
3126	#if EV_MULTIPLICITY	3612	#if EV_MULTIPLICITY
3127	#include "ev_wrap.h"	3613	#include "ev_wrap.h"
3128	#endif	3614	#endif
3129		3615
3130	#ifdef __cplusplus	3616	#ifdef __cplusplus

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