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Comparing libev/ev.c (file contents):
Revision 1.241 by root, Fri May 9 13:57:00 2008 UTC vs.
Revision 1.291 by root, Mon Jun 29 04:44:18 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
…		…
126	# define EV_USE_EVENTFD 1	140	# define EV_USE_EVENTFD 1
127	# else	141	# else
128	# define EV_USE_EVENTFD 0	142	# define EV_USE_EVENTFD 0
129	# endif	143	# endif
130	# endif	144	# endif
131		145
132	#endif	146	#endif
133		147
134	#include <math.h>	148	#include <math.h>
135	#include <stdlib.h>	149	#include <stdlib.h>
136	#include <fcntl.h>	150	#include <fcntl.h>
…		…
154	#ifndef _WIN32	168	#ifndef _WIN32
155	# include <sys/time.h>	169	# include <sys/time.h>
156	# include <sys/wait.h>	170	# include <sys/wait.h>
157	# include <unistd.h>	171	# include <unistd.h>
158	#else	172	#else
		173	# include <io.h>
159	# define WIN32_LEAN_AND_MEAN	174	# define WIN32_LEAN_AND_MEAN
160	# include <windows.h>	175	# include <windows.h>
161	# ifndef EV_SELECT_IS_WINSOCKET	176	# ifndef EV_SELECT_IS_WINSOCKET
162	# define EV_SELECT_IS_WINSOCKET 1	177	# define EV_SELECT_IS_WINSOCKET 1
163	# endif	178	# endif
164	#endif	179	#endif
165		180
166	/* 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 */
167		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
168	#ifndef EV_USE_MONOTONIC	191	#ifndef EV_USE_MONOTONIC
		192	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
		193	# define EV_USE_MONOTONIC 1
		194	# else
169	# define EV_USE_MONOTONIC 0	195	# define EV_USE_MONOTONIC 0
		196	# endif
170	#endif	197	#endif
171		198
172	#ifndef EV_USE_REALTIME	199	#ifndef EV_USE_REALTIME
173	# define EV_USE_REALTIME 0	200	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174	#endif	201	#endif
175		202
176	#ifndef EV_USE_NANOSLEEP	203	#ifndef EV_USE_NANOSLEEP
		204	# if _POSIX_C_SOURCE >= 199309L
		205	# define EV_USE_NANOSLEEP 1
		206	# else
177	# define EV_USE_NANOSLEEP 0	207	# define EV_USE_NANOSLEEP 0
		208	# endif
178	#endif	209	#endif
179		210
180	#ifndef EV_USE_SELECT	211	#ifndef EV_USE_SELECT
181	# define EV_USE_SELECT 1	212	# define EV_USE_SELECT 1
182	#endif	213	#endif
…		…
235	# else	266	# else
236	# define EV_USE_EVENTFD 0	267	# define EV_USE_EVENTFD 0
237	# endif	268	# endif
238	#endif	269	#endif
239		270
		271	#if 0 /* debugging */
		272	# define EV_VERIFY 3
		273	# define EV_USE_4HEAP 1
		274	# define EV_HEAP_CACHE_AT 1
		275	#endif
		276
		277	#ifndef EV_VERIFY
		278	# define EV_VERIFY !EV_MINIMAL
		279	#endif
		280
		281	#ifndef EV_USE_4HEAP
		282	# define EV_USE_4HEAP !EV_MINIMAL
		283	#endif
		284
		285	#ifndef EV_HEAP_CACHE_AT
		286	# define EV_HEAP_CACHE_AT !EV_MINIMAL
		287	#endif
		288
		289	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		290	/* which makes programs even slower. might work on other unices, too. */
		291	#if EV_USE_CLOCK_SYSCALL
		292	# include <syscall.h>
		293	# ifdef SYS_clock_gettime
		294	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		295	# undef EV_USE_MONOTONIC
		296	# define EV_USE_MONOTONIC 1
		297	# else
		298	# undef EV_USE_CLOCK_SYSCALL
		299	# define EV_USE_CLOCK_SYSCALL 0
		300	# endif
		301	#endif
		302
240	/* 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 */
241		304
242	#ifndef CLOCK_MONOTONIC	305	#ifndef CLOCK_MONOTONIC
243	# undef EV_USE_MONOTONIC	306	# undef EV_USE_MONOTONIC
244	# define EV_USE_MONOTONIC 0	307	# define EV_USE_MONOTONIC 0
…		…
259	# include <sys/select.h>	322	# include <sys/select.h>
260	# endif	323	# endif
261	#endif	324	#endif
262		325
263	#if EV_USE_INOTIFY	326	#if EV_USE_INOTIFY
		327	# include <sys/utsname.h>
		328	# include <sys/statfs.h>
264	# include <sys/inotify.h>	329	# include <sys/inotify.h>
		330	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
		331	# ifndef IN_DONT_FOLLOW
		332	# undef EV_USE_INOTIFY
		333	# define EV_USE_INOTIFY 0
		334	# endif
265	#endif	335	#endif
266		336
267	#if EV_SELECT_IS_WINSOCKET	337	#if EV_SELECT_IS_WINSOCKET
268	# include <winsock.h>	338	# include <winsock.h>
269	#endif	339	#endif
…		…
279	}	349	}
280	# endif	350	# endif
281	#endif	351	#endif
282		352
283	/**/	353	/**/
		354
		355	#if EV_VERIFY >= 3
		356	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
		357	#else
		358	# define EV_FREQUENT_CHECK do { } while (0)
		359	#endif
284		360
285	/*	361	/*
286	* This is used to avoid floating point rounding problems.	362	* This is used to avoid floating point rounding problems.
287	* It is added to ev_rt_now when scheduling periodics	363	* It is added to ev_rt_now when scheduling periodics
288	* to ensure progress, time-wise, even when rounding	364	* to ensure progress, time-wise, even when rounding
…		…
328	typedef ev_watcher_time *WT;	404	typedef ev_watcher_time *WT;
329		405
330	#define ev_active(w) ((W)(w))->active	406	#define ev_active(w) ((W)(w))->active
331	#define ev_at(w) ((WT)(w))->at	407	#define ev_at(w) ((WT)(w))->at
332		408
333	#if EV_USE_MONOTONIC	409	#if EV_USE_REALTIME
334	/* sig_atomic_t is used to avoid per-thread variables or locking but still */	410	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
335	/* giving it a reasonably high chance of working on typical architetcures */	411	/* giving it a reasonably high chance of working on typical architetcures */
		412	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		413	#endif
		414
		415	#if EV_USE_MONOTONIC
336	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	416	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
337	#endif	417	#endif
338		418
339	#ifdef _WIN32	419	#ifdef _WIN32
340	# include "ev_win32.c"	420	# include "ev_win32.c"
…		…
349	{	429	{
350	syserr_cb = cb;	430	syserr_cb = cb;
351	}	431	}
352		432
353	static void noinline	433	static void noinline
354	syserr (const char *msg)	434	ev_syserr (const char *msg)
355	{	435	{
356	if (!msg)	436	if (!msg)
357	msg = "(libev) system error";	437	msg = "(libev) system error";
358		438
359	if (syserr_cb)	439	if (syserr_cb)
…		…
405	#define ev_malloc(size) ev_realloc (0, (size))	485	#define ev_malloc(size) ev_realloc (0, (size))
406	#define ev_free(ptr) ev_realloc ((ptr), 0)	486	#define ev_free(ptr) ev_realloc ((ptr), 0)
407		487
408	/*****************************************************************************/	488	/*****************************************************************************/
409		489
		490	/* file descriptor info structure */
410	typedef struct	491	typedef struct
411	{	492	{
412	WL head;	493	WL head;
413	unsigned char events;	494	unsigned char events; /* the events watched for */
		495	unsigned char reify; /* flag set when this ANFD needs reification */
		496	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
414	unsigned char reify;	497	unsigned char unused;
		498	#if EV_USE_EPOLL
		499	unsigned int egen; /* generation counter to counter epoll bugs */
		500	#endif
415	#if EV_SELECT_IS_WINSOCKET	501	#if EV_SELECT_IS_WINSOCKET
416	SOCKET handle;	502	SOCKET handle;
417	#endif	503	#endif
418	} ANFD;	504	} ANFD;
419		505
		506	/* stores the pending event set for a given watcher */
420	typedef struct	507	typedef struct
421	{	508	{
422	W w;	509	W w;
423	int events;	510	int events; /* the pending event set for the given watcher */
424	} ANPENDING;	511	} ANPENDING;
425		512
426	#if EV_USE_INOTIFY	513	#if EV_USE_INOTIFY
427	/* hash table entry per inotify-id */	514	/* hash table entry per inotify-id */
428	typedef struct	515	typedef struct
…		…
431	} ANFS;	518	} ANFS;
432	#endif	519	#endif
433		520
434	/* Heap Entry */	521	/* Heap Entry */
435	#if EV_HEAP_CACHE_AT	522	#if EV_HEAP_CACHE_AT
		523	/* a heap element */
436	typedef struct {	524	typedef struct {
		525	ev_tstamp at;
437	WT w;	526	WT w;
438	ev_tstamp at;
439	} ANHE;	527	} ANHE;
440		528
441	#define ANHE_w(he) (he) /* access watcher, read-write */	529	#define ANHE_w(he) (he).w /* access watcher, read-write */
442	#define ANHE_at(he) (he)->at /* acces cahced at, read-only */	530	#define ANHE_at(he) (he).at /* access cached at, read-only */
443	#define ANHE_at_set(he) (he)->at = (he)->w->at /* update at from watcher */	531	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
444	#else	532	#else
		533	/* a heap element */
445	typedef WT ANHE;	534	typedef WT ANHE;
446		535
447	#define ANHE_w(he) (he)	536	#define ANHE_w(he) (he)
448	#define ANHE_at(he) (he)->at	537	#define ANHE_at(he) (he)->at
449	#define ANHE_at_set(he)	538	#define ANHE_at_cache(he)
450	#endif	539	#endif
451		540
452	#if EV_MULTIPLICITY	541	#if EV_MULTIPLICITY
453		542
454	struct ev_loop	543	struct ev_loop
…		…
479		568
480	ev_tstamp	569	ev_tstamp
481	ev_time (void)	570	ev_time (void)
482	{	571	{
483	#if EV_USE_REALTIME	572	#if EV_USE_REALTIME
		573	if (expect_true (have_realtime))
		574	{
484	struct timespec ts;	575	struct timespec ts;
485	clock_gettime (CLOCK_REALTIME, &ts);	576	clock_gettime (CLOCK_REALTIME, &ts);
486	return ts.tv_sec + ts.tv_nsec * 1e-9;	577	return ts.tv_sec + ts.tv_nsec * 1e-9;
487	#else	578	}
		579	#endif
		580
488	struct timeval tv;	581	struct timeval tv;
489	gettimeofday (&tv, 0);	582	gettimeofday (&tv, 0);
490	return tv.tv_sec + tv.tv_usec * 1e-6;	583	return tv.tv_sec + tv.tv_usec * 1e-6;
491	#endif
492	}	584	}
493		585
494	ev_tstamp inline_size	586	inline_size ev_tstamp
495	get_clock (void)	587	get_clock (void)
496	{	588	{
497	#if EV_USE_MONOTONIC	589	#if EV_USE_MONOTONIC
498	if (expect_true (have_monotonic))	590	if (expect_true (have_monotonic))
499	{	591	{
…		…
532	struct timeval tv;	624	struct timeval tv;
533		625
534	tv.tv_sec = (time_t)delay;	626	tv.tv_sec = (time_t)delay;
535	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	627	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
536		628
		629	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		630	/* somehting nto guaranteed by newer posix versions, but guaranteed */
		631	/* by older ones */
537	select (0, 0, 0, 0, &tv);	632	select (0, 0, 0, 0, &tv);
538	#endif	633	#endif
539	}	634	}
540	}	635	}
541		636
542	/*****************************************************************************/	637	/*****************************************************************************/
543		638
544	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	639	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
545		640
546	int inline_size	641	/* find a suitable new size for the given array, */
		642	/* hopefully by rounding to a ncie-to-malloc size */
		643	inline_size int
547	array_nextsize (int elem, int cur, int cnt)	644	array_nextsize (int elem, int cur, int cnt)
548	{	645	{
549	int ncur = cur + 1;	646	int ncur = cur + 1;
550		647
551	do	648	do
…		…
568	array_realloc (int elem, void *base, int *cur, int cnt)	665	array_realloc (int elem, void *base, int *cur, int cnt)
569	{	666	{
570	*cur = array_nextsize (elem, *cur, cnt);	667	*cur = array_nextsize (elem, *cur, cnt);
571	return ev_realloc (base, elem * *cur);	668	return ev_realloc (base, elem * *cur);
572	}	669	}
		670
		671	#define array_init_zero(base,count) \
		672	memset ((void *)(base), 0, sizeof (*(base)) * (count))
573		673
574	#define array_needsize(type,base,cur,cnt,init) \	674	#define array_needsize(type,base,cur,cnt,init) \
575	if (expect_false ((cnt) > (cur))) \	675	if (expect_false ((cnt) > (cur))) \
576	{ \	676	{ \
577	int ocur_ = (cur); \	677	int ocur_ = (cur); \
…		…
589	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	689	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
590	}	690	}
591	#endif	691	#endif
592		692
593	#define array_free(stem, idx) \	693	#define array_free(stem, idx) \
594	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	694	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
595		695
596	/*****************************************************************************/	696	/*****************************************************************************/
		697
		698	/* dummy callback for pending events */
		699	static void noinline
		700	pendingcb (EV_P_ ev_prepare *w, int revents)
		701	{
		702	}
597		703
598	void noinline	704	void noinline
599	ev_feed_event (EV_P_ void *w, int revents)	705	ev_feed_event (EV_P_ void *w, int revents)
600	{	706	{
601	W w_ = (W)w;	707	W w_ = (W)w;
…		…
610	pendings [pri][w_->pending - 1].w = w_;	716	pendings [pri][w_->pending - 1].w = w_;
611	pendings [pri][w_->pending - 1].events = revents;	717	pendings [pri][w_->pending - 1].events = revents;
612	}	718	}
613	}	719	}
614		720
615	void inline_speed	721	inline_speed void
		722	feed_reverse (EV_P_ W w)
		723	{
		724	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		725	rfeeds [rfeedcnt++] = w;
		726	}
		727
		728	inline_size void
		729	feed_reverse_done (EV_P_ int revents)
		730	{
		731	do
		732	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		733	while (rfeedcnt);
		734	}
		735
		736	inline_speed void
616	queue_events (EV_P_ W *events, int eventcnt, int type)	737	queue_events (EV_P_ W *events, int eventcnt, int type)
617	{	738	{
618	int i;	739	int i;
619		740
620	for (i = 0; i < eventcnt; ++i)	741	for (i = 0; i < eventcnt; ++i)
621	ev_feed_event (EV_A_ events [i], type);	742	ev_feed_event (EV_A_ events [i], type);
622	}	743	}
623		744
624	/*****************************************************************************/	745	/*****************************************************************************/
625		746
626	void inline_size	747	inline_speed void
627	anfds_init (ANFD *base, int count)
628	{
629	while (count--)
630	{
631	base->head = 0;
632	base->events = EV_NONE;
633	base->reify = 0;
634
635	++base;
636	}
637	}
638
639	void inline_speed
640	fd_event (EV_P_ int fd, int revents)	748	fd_event (EV_P_ int fd, int revents)
641	{	749	{
642	ANFD *anfd = anfds + fd;	750	ANFD *anfd = anfds + fd;
643	ev_io *w;	751	ev_io *w;
644		752
…		…
656	{	764	{
657	if (fd >= 0 && fd < anfdmax)	765	if (fd >= 0 && fd < anfdmax)
658	fd_event (EV_A_ fd, revents);	766	fd_event (EV_A_ fd, revents);
659	}	767	}
660		768
661	void inline_size	769	/* make sure the external fd watch events are in-sync */
		770	/* with the kernel/libev internal state */
		771	inline_size void
662	fd_reify (EV_P)	772	fd_reify (EV_P)
663	{	773	{
664	int i;	774	int i;
665		775
666	for (i = 0; i < fdchangecnt; ++i)	776	for (i = 0; i < fdchangecnt; ++i)
…		…
675	events |= (unsigned char)w->events;	785	events |= (unsigned char)w->events;
676		786
677	#if EV_SELECT_IS_WINSOCKET	787	#if EV_SELECT_IS_WINSOCKET
678	if (events)	788	if (events)
679	{	789	{
680	unsigned long argp;	790	unsigned long arg;
681	#ifdef EV_FD_TO_WIN32_HANDLE	791	#ifdef EV_FD_TO_WIN32_HANDLE
682	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	792	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
683	#else	793	#else
684	anfd->handle = _get_osfhandle (fd);	794	anfd->handle = _get_osfhandle (fd);
685	#endif	795	#endif
686	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	796	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
687	}	797	}
688	#endif	798	#endif
689		799
690	{	800	{
691	unsigned char o_events = anfd->events;	801	unsigned char o_events = anfd->events;
692	unsigned char o_reify = anfd->reify;	802	unsigned char o_reify = anfd->reify;
693		803
694	anfd->reify = 0;	804	anfd->reify = 0;
695	anfd->events = events;	805	anfd->events = events;
696		806
697	if (o_events != events || o_reify & EV_IOFDSET)	807	if (o_events != events || o_reify & EV__IOFDSET)
698	backend_modify (EV_A_ fd, o_events, events);	808	backend_modify (EV_A_ fd, o_events, events);
699	}	809	}
700	}	810	}
701		811
702	fdchangecnt = 0;	812	fdchangecnt = 0;
703	}	813	}
704		814
705	void inline_size	815	/* something about the given fd changed */
		816	inline_size void
706	fd_change (EV_P_ int fd, int flags)	817	fd_change (EV_P_ int fd, int flags)
707	{	818	{
708	unsigned char reify = anfds [fd].reify;	819	unsigned char reify = anfds [fd].reify;
709	anfds [fd].reify |= flags;	820	anfds [fd].reify |= flags;
710		821
…		…
714	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	825	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
715	fdchanges [fdchangecnt - 1] = fd;	826	fdchanges [fdchangecnt - 1] = fd;
716	}	827	}
717	}	828	}
718		829
719	void inline_speed	830	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		831	inline_speed void
720	fd_kill (EV_P_ int fd)	832	fd_kill (EV_P_ int fd)
721	{	833	{
722	ev_io *w;	834	ev_io *w;
723		835
724	while ((w = (ev_io *)anfds [fd].head))	836	while ((w = (ev_io *)anfds [fd].head))
…		…
726	ev_io_stop (EV_A_ w);	838	ev_io_stop (EV_A_ w);
727	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	839	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
728	}	840	}
729	}	841	}
730		842
731	int inline_size	843	/* check whether the given fd is atcually valid, for error recovery */
		844	inline_size int
732	fd_valid (int fd)	845	fd_valid (int fd)
733	{	846	{
734	#ifdef _WIN32	847	#ifdef _WIN32
735	return _get_osfhandle (fd) != -1;	848	return _get_osfhandle (fd) != -1;
736	#else	849	#else
…		…
744	{	857	{
745	int fd;	858	int fd;
746		859
747	for (fd = 0; fd < anfdmax; ++fd)	860	for (fd = 0; fd < anfdmax; ++fd)
748	if (anfds [fd].events)	861	if (anfds [fd].events)
749	if (!fd_valid (fd) == -1 && errno == EBADF)	862	if (!fd_valid (fd) && errno == EBADF)
750	fd_kill (EV_A_ fd);	863	fd_kill (EV_A_ fd);
751	}	864	}
752		865
753	/* called on ENOMEM in select/poll to kill some fds and retry */	866	/* called on ENOMEM in select/poll to kill some fds and retry */
754	static void noinline	867	static void noinline
…		…
772		885
773	for (fd = 0; fd < anfdmax; ++fd)	886	for (fd = 0; fd < anfdmax; ++fd)
774	if (anfds [fd].events)	887	if (anfds [fd].events)
775	{	888	{
776	anfds [fd].events = 0;	889	anfds [fd].events = 0;
		890	anfds [fd].emask = 0;
777	fd_change (EV_A_ fd, EV_IOFDSET | 1);	891	fd_change (EV_A_ fd, EV__IOFDSET | 1);
778	}	892	}
779	}	893	}
780		894
781	/*****************************************************************************/	895	/*****************************************************************************/
782		896
…		…
790	* at the moment we allow libev the luxury of two heaps,	904	* at the moment we allow libev the luxury of two heaps,
791	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap	905	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
792	* which is more cache-efficient.	906	* which is more cache-efficient.
793	* the difference is about 5% with 50000+ watchers.	907	* the difference is about 5% with 50000+ watchers.
794	*/	908	*/
795	#define EV_USE_4HEAP !EV_MINIMAL
796	#if EV_USE_4HEAP	909	#if EV_USE_4HEAP
797		910
798	#define DHEAP 4	911	#define DHEAP 4
799	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	912	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
800		913	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
801	/* towards the root */	914	#define UPHEAP_DONE(p,k) ((p) == (k))
802	void inline_speed
803	upheap (ANHE *heap, int k)
804	{
805	ANHE he = heap [k];
806
807	for (;;)
808	{
809	int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
810
811	if (p == k || ANHE_at (heap [p]) <= ANHE_at (he))
812	break;
813
814	heap [k] = heap [p];
815	ev_active (ANHE_w (heap [k])) = k;
816	k = p;
817	}
818
819	ev_active (ANHE_w (he)) = k;
820	heap [k] = he;
821	}
822		915
823	/* away from the root */	916	/* away from the root */
824	void inline_speed	917	inline_speed void
825	downheap (ANHE *heap, int N, int k)	918	downheap (ANHE *heap, int N, int k)
826	{	919	{
827	ANHE he = heap [k];	920	ANHE he = heap [k];
828	ANHE *E = heap + N + HEAP0;	921	ANHE *E = heap + N + HEAP0;
829		922
830	for (;;)	923	for (;;)
831	{	924	{
832	ev_tstamp minat;	925	ev_tstamp minat;
833	ANHE *minpos;	926	ANHE *minpos;
834	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0;	927	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
835		928
836	// find minimum child	929	/* find minimum child */
837	if (expect_true (pos + DHEAP - 1 < E))	930	if (expect_true (pos + DHEAP - 1 < E))
838	{	931	{
839	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));	932	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
840	if (ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));	933	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
841	if (ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));	934	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
842	if (ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));	935	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
843	}	936	}
844	else if (pos < E)	937	else if (pos < E)
845	{	938	{
846	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));	939	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
847	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));	940	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
…		…
852	break;	945	break;
853		946
854	if (ANHE_at (he) <= minat)	947	if (ANHE_at (he) <= minat)
855	break;	948	break;
856		949
		950	heap [k] = *minpos;
857	ev_active (ANHE_w (*minpos)) = k;	951	ev_active (ANHE_w (*minpos)) = k;
858	heap [k] = *minpos;
859		952
860	k = minpos - heap;	953	k = minpos - heap;
861	}	954	}
862		955
		956	heap [k] = he;
863	ev_active (ANHE_w (he)) = k;	957	ev_active (ANHE_w (he)) = k;
864	heap [k] = he;
865	}	958	}
866		959
867	#else // 4HEAP	960	#else /* 4HEAP */
868		961
869	#define HEAP0 1	962	#define HEAP0 1
		963	#define HPARENT(k) ((k) >> 1)
		964	#define UPHEAP_DONE(p,k) (!(p))
870		965
871	/* towards the root */	966	/* away from the root */
872	void inline_speed	967	inline_speed void
873	upheap (ANHE *heap, int k)	968	downheap (ANHE *heap, int N, int k)
874	{	969	{
875	ANHE he = heap [k];	970	ANHE he = heap [k];
876		971
877	for (;;)	972	for (;;)
878	{	973	{
879	int p = k >> 1;	974	int c = k << 1;
880		975
881	/* maybe we could use a dummy element at heap [0]? */	976	if (c > N + HEAP0 - 1)
882	if (!p || ANHE_at (heap [p]) <= ANHE_at (he))
883	break;	977	break;
884		978
885	heap [k] = heap [p];
886	ev_active (ANHE_w (heap [k])) = k;
887	k = p;
888	}
889
890	heap [k] = w;
891	ev_active (ANHE_w (heap [k])) = k;
892	}
893
894	/* away from the root */
895	void inline_speed
896	downheap (ANHE *heap, int N, int k)
897	{
898	ANHE he = heap [k];
899
900	for (;;)
901	{
902	int c = k << 1;
903
904	if (c > N)
905	break;
906
907	c += c + 1 < N && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])	979	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
908	? 1 : 0;	980	? 1 : 0;
909		981
910	if (w->at <= ANHE_at (heap [c]))	982	if (ANHE_at (he) <= ANHE_at (heap [c]))
911	break;	983	break;
912		984
913	heap [k] = heap [c];	985	heap [k] = heap [c];
914	ev_active (ANHE_w (heap [k])) = k;	986	ev_active (ANHE_w (heap [k])) = k;
915		987
…		…
919	heap [k] = he;	991	heap [k] = he;
920	ev_active (ANHE_w (he)) = k;	992	ev_active (ANHE_w (he)) = k;
921	}	993	}
922	#endif	994	#endif
923		995
924	void inline_size	996	/* towards the root */
		997	inline_speed void
		998	upheap (ANHE *heap, int k)
		999	{
		1000	ANHE he = heap [k];
		1001
		1002	for (;;)
		1003	{
		1004	int p = HPARENT (k);
		1005
		1006	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		1007	break;
		1008
		1009	heap [k] = heap [p];
		1010	ev_active (ANHE_w (heap [k])) = k;
		1011	k = p;
		1012	}
		1013
		1014	heap [k] = he;
		1015	ev_active (ANHE_w (he)) = k;
		1016	}
		1017
		1018	/* move an element suitably so it is in a correct place */
		1019	inline_size void
925	adjustheap (ANHE *heap, int N, int k)	1020	adjustheap (ANHE *heap, int N, int k)
926	{	1021	{
		1022	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
927	upheap (heap, k);	1023	upheap (heap, k);
		1024	else
928	downheap (heap, N, k);	1025	downheap (heap, N, k);
		1026	}
		1027
		1028	/* rebuild the heap: this function is used only once and executed rarely */
		1029	inline_size void
		1030	reheap (ANHE *heap, int N)
		1031	{
		1032	int i;
		1033
		1034	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		1035	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		1036	for (i = 0; i < N; ++i)
		1037	upheap (heap, i + HEAP0);
929	}	1038	}
930		1039
931	/*****************************************************************************/	1040	/*****************************************************************************/
932		1041
		1042	/* associate signal watchers to a signal signal */
933	typedef struct	1043	typedef struct
934	{	1044	{
935	WL head;	1045	WL head;
936	EV_ATOMIC_T gotsig;	1046	EV_ATOMIC_T gotsig;
937	} ANSIG;	1047	} ANSIG;
…		…
939	static ANSIG *signals;	1049	static ANSIG *signals;
940	static int signalmax;	1050	static int signalmax;
941		1051
942	static EV_ATOMIC_T gotsig;	1052	static EV_ATOMIC_T gotsig;
943		1053
944	void inline_size
945	signals_init (ANSIG *base, int count)
946	{
947	while (count--)
948	{
949	base->head = 0;
950	base->gotsig = 0;
951
952	++base;
953	}
954	}
955
956	/*****************************************************************************/	1054	/*****************************************************************************/
957		1055
958	void inline_speed	1056	/* used to prepare libev internal fd's */
		1057	/* this is not fork-safe */
		1058	inline_speed void
959	fd_intern (int fd)	1059	fd_intern (int fd)
960	{	1060	{
961	#ifdef _WIN32	1061	#ifdef _WIN32
962	int arg = 1;	1062	unsigned long arg = 1;
963	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1063	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
964	#else	1064	#else
965	fcntl (fd, F_SETFD, FD_CLOEXEC);	1065	fcntl (fd, F_SETFD, FD_CLOEXEC);
966	fcntl (fd, F_SETFL, O_NONBLOCK);	1066	fcntl (fd, F_SETFL, O_NONBLOCK);
967	#endif	1067	#endif
968	}	1068	}
969		1069
970	static void noinline	1070	static void noinline
971	evpipe_init (EV_P)	1071	evpipe_init (EV_P)
972	{	1072	{
973	if (!ev_is_active (&pipeev))	1073	if (!ev_is_active (&pipe_w))
974	{	1074	{
975	#if EV_USE_EVENTFD	1075	#if EV_USE_EVENTFD
976	if ((evfd = eventfd (0, 0)) >= 0)	1076	if ((evfd = eventfd (0, 0)) >= 0)
977	{	1077	{
978	evpipe [0] = -1;	1078	evpipe [0] = -1;
979	fd_intern (evfd);	1079	fd_intern (evfd);
980	ev_io_set (&pipeev, evfd, EV_READ);	1080	ev_io_set (&pipe_w, evfd, EV_READ);
981	}	1081	}
982	else	1082	else
983	#endif	1083	#endif
984	{	1084	{
985	while (pipe (evpipe))	1085	while (pipe (evpipe))
986	syserr ("(libev) error creating signal/async pipe");	1086	ev_syserr ("(libev) error creating signal/async pipe");
987		1087
988	fd_intern (evpipe [0]);	1088	fd_intern (evpipe [0]);
989	fd_intern (evpipe [1]);	1089	fd_intern (evpipe [1]);
990	ev_io_set (&pipeev, evpipe [0], EV_READ);	1090	ev_io_set (&pipe_w, evpipe [0], EV_READ);
991	}	1091	}
992		1092
993	ev_io_start (EV_A_ &pipeev);	1093	ev_io_start (EV_A_ &pipe_w);
994	ev_unref (EV_A); /* watcher should not keep loop alive */	1094	ev_unref (EV_A); /* watcher should not keep loop alive */
995	}	1095	}
996	}	1096	}
997		1097
998	void inline_size	1098	inline_size void
999	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1099	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1000	{	1100	{
1001	if (!*flag)	1101	if (!*flag)
1002	{	1102	{
1003	int old_errno = errno; /* save errno because write might clobber it */	1103	int old_errno = errno; /* save errno because write might clobber it */
…		…
1016		1116
1017	errno = old_errno;	1117	errno = old_errno;
1018	}	1118	}
1019	}	1119	}
1020		1120
		1121	/* called whenever the libev signal pipe */
		1122	/* got some events (signal, async) */
1021	static void	1123	static void
1022	pipecb (EV_P_ ev_io *iow, int revents)	1124	pipecb (EV_P_ ev_io *iow, int revents)
1023	{	1125	{
1024	#if EV_USE_EVENTFD	1126	#if EV_USE_EVENTFD
1025	if (evfd >= 0)	1127	if (evfd >= 0)
…		…
1081	ev_feed_signal_event (EV_P_ int signum)	1183	ev_feed_signal_event (EV_P_ int signum)
1082	{	1184	{
1083	WL w;	1185	WL w;
1084		1186
1085	#if EV_MULTIPLICITY	1187	#if EV_MULTIPLICITY
1086	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1188	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1087	#endif	1189	#endif
1088		1190
1089	--signum;	1191	--signum;
1090		1192
1091	if (signum < 0 || signum >= signalmax)	1193	if (signum < 0 || signum >= signalmax)
…		…
1107		1209
1108	#ifndef WIFCONTINUED	1210	#ifndef WIFCONTINUED
1109	# define WIFCONTINUED(status) 0	1211	# define WIFCONTINUED(status) 0
1110	#endif	1212	#endif
1111		1213
1112	void inline_speed	1214	/* handle a single child status event */
		1215	inline_speed void
1113	child_reap (EV_P_ int chain, int pid, int status)	1216	child_reap (EV_P_ int chain, int pid, int status)
1114	{	1217	{
1115	ev_child *w;	1218	ev_child *w;
1116	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1219	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1117		1220
…		…
1130		1233
1131	#ifndef WCONTINUED	1234	#ifndef WCONTINUED
1132	# define WCONTINUED 0	1235	# define WCONTINUED 0
1133	#endif	1236	#endif
1134		1237
		1238	/* called on sigchld etc., calls waitpid */
1135	static void	1239	static void
1136	childcb (EV_P_ ev_signal *sw, int revents)	1240	childcb (EV_P_ ev_signal *sw, int revents)
1137	{	1241	{
1138	int pid, status;	1242	int pid, status;
1139		1243
…		…
1220	/* kqueue is borked on everything but netbsd apparently */	1324	/* kqueue is borked on everything but netbsd apparently */
1221	/* it usually doesn't work correctly on anything but sockets and pipes */	1325	/* it usually doesn't work correctly on anything but sockets and pipes */
1222	flags &= ~EVBACKEND_KQUEUE;	1326	flags &= ~EVBACKEND_KQUEUE;
1223	#endif	1327	#endif
1224	#ifdef __APPLE__	1328	#ifdef __APPLE__
1225	// flags &= ~EVBACKEND_KQUEUE; for documentation	1329	/* only select works correctly on that "unix-certified" platform */
1226	flags &= ~EVBACKEND_POLL;	1330	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1331	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1227	#endif	1332	#endif
1228		1333
1229	return flags;	1334	return flags;
1230	}	1335	}
1231		1336
…		…
1263	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1368	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1264	{	1369	{
1265	timeout_blocktime = interval;	1370	timeout_blocktime = interval;
1266	}	1371	}
1267		1372
		1373	/* initialise a loop structure, must be zero-initialised */
1268	static void noinline	1374	static void noinline
1269	loop_init (EV_P_ unsigned int flags)	1375	loop_init (EV_P_ unsigned int flags)
1270	{	1376	{
1271	if (!backend)	1377	if (!backend)
1272	{	1378	{
		1379	#if EV_USE_REALTIME
		1380	if (!have_realtime)
		1381	{
		1382	struct timespec ts;
		1383
		1384	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1385	have_realtime = 1;
		1386	}
		1387	#endif
		1388
1273	#if EV_USE_MONOTONIC	1389	#if EV_USE_MONOTONIC
		1390	if (!have_monotonic)
1274	{	1391	{
1275	struct timespec ts;	1392	struct timespec ts;
		1393
1276	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1394	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1277	have_monotonic = 1;	1395	have_monotonic = 1;
1278	}	1396	}
1279	#endif	1397	#endif
1280		1398
1281	ev_rt_now = ev_time ();	1399	ev_rt_now = ev_time ();
1282	mn_now = get_clock ();	1400	mn_now = get_clock ();
1283	now_floor = mn_now;	1401	now_floor = mn_now;
…		…
1320	#endif	1438	#endif
1321	#if EV_USE_SELECT	1439	#if EV_USE_SELECT
1322	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1440	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1323	#endif	1441	#endif
1324		1442
		1443	ev_prepare_init (&pending_w, pendingcb);
		1444
1325	ev_init (&pipeev, pipecb);	1445	ev_init (&pipe_w, pipecb);
1326	ev_set_priority (&pipeev, EV_MAXPRI);	1446	ev_set_priority (&pipe_w, EV_MAXPRI);
1327	}	1447	}
1328	}	1448	}
1329		1449
		1450	/* free up a loop structure */
1330	static void noinline	1451	static void noinline
1331	loop_destroy (EV_P)	1452	loop_destroy (EV_P)
1332	{	1453	{
1333	int i;	1454	int i;
1334		1455
1335	if (ev_is_active (&pipeev))	1456	if (ev_is_active (&pipe_w))
1336	{	1457	{
1337	ev_ref (EV_A); /* signal watcher */	1458	ev_ref (EV_A); /* signal watcher */
1338	ev_io_stop (EV_A_ &pipeev);	1459	ev_io_stop (EV_A_ &pipe_w);
1339		1460
1340	#if EV_USE_EVENTFD	1461	#if EV_USE_EVENTFD
1341	if (evfd >= 0)	1462	if (evfd >= 0)
1342	close (evfd);	1463	close (evfd);
1343	#endif	1464	#endif
…		…
1382	}	1503	}
1383		1504
1384	ev_free (anfds); anfdmax = 0;	1505	ev_free (anfds); anfdmax = 0;
1385		1506
1386	/* have to use the microsoft-never-gets-it-right macro */	1507	/* have to use the microsoft-never-gets-it-right macro */
		1508	array_free (rfeed, EMPTY);
1387	array_free (fdchange, EMPTY);	1509	array_free (fdchange, EMPTY);
1388	array_free (timer, EMPTY);	1510	array_free (timer, EMPTY);
1389	#if EV_PERIODIC_ENABLE	1511	#if EV_PERIODIC_ENABLE
1390	array_free (periodic, EMPTY);	1512	array_free (periodic, EMPTY);
1391	#endif	1513	#endif
…		…
1400		1522
1401	backend = 0;	1523	backend = 0;
1402	}	1524	}
1403		1525
1404	#if EV_USE_INOTIFY	1526	#if EV_USE_INOTIFY
1405	void inline_size infy_fork (EV_P);	1527	inline_size void infy_fork (EV_P);
1406	#endif	1528	#endif
1407		1529
1408	void inline_size	1530	inline_size void
1409	loop_fork (EV_P)	1531	loop_fork (EV_P)
1410	{	1532	{
1411	#if EV_USE_PORT	1533	#if EV_USE_PORT
1412	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1534	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1413	#endif	1535	#endif
…		…
1419	#endif	1541	#endif
1420	#if EV_USE_INOTIFY	1542	#if EV_USE_INOTIFY
1421	infy_fork (EV_A);	1543	infy_fork (EV_A);
1422	#endif	1544	#endif
1423		1545
1424	if (ev_is_active (&pipeev))	1546	if (ev_is_active (&pipe_w))
1425	{	1547	{
1426	/* this "locks" the handlers against writing to the pipe */	1548	/* this "locks" the handlers against writing to the pipe */
1427	/* while we modify the fd vars */	1549	/* while we modify the fd vars */
1428	gotsig = 1;	1550	gotsig = 1;
1429	#if EV_ASYNC_ENABLE	1551	#if EV_ASYNC_ENABLE
1430	gotasync = 1;	1552	gotasync = 1;
1431	#endif	1553	#endif
1432		1554
1433	ev_ref (EV_A);	1555	ev_ref (EV_A);
1434	ev_io_stop (EV_A_ &pipeev);	1556	ev_io_stop (EV_A_ &pipe_w);
1435		1557
1436	#if EV_USE_EVENTFD	1558	#if EV_USE_EVENTFD
1437	if (evfd >= 0)	1559	if (evfd >= 0)
1438	close (evfd);	1560	close (evfd);
1439	#endif	1561	#endif
…		…
1444	close (evpipe [1]);	1566	close (evpipe [1]);
1445	}	1567	}
1446		1568
1447	evpipe_init (EV_A);	1569	evpipe_init (EV_A);
1448	/* now iterate over everything, in case we missed something */	1570	/* now iterate over everything, in case we missed something */
1449	pipecb (EV_A_ &pipeev, EV_READ);	1571	pipecb (EV_A_ &pipe_w, EV_READ);
1450	}	1572	}
1451		1573
1452	postfork = 0;	1574	postfork = 0;
1453	}	1575	}
1454		1576
1455	#if EV_MULTIPLICITY	1577	#if EV_MULTIPLICITY
		1578
1456	struct ev_loop *	1579	struct ev_loop *
1457	ev_loop_new (unsigned int flags)	1580	ev_loop_new (unsigned int flags)
1458	{	1581	{
1459	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1582	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1460		1583
…		…
1478	void	1601	void
1479	ev_loop_fork (EV_P)	1602	ev_loop_fork (EV_P)
1480	{	1603	{
1481	postfork = 1; /* must be in line with ev_default_fork */	1604	postfork = 1; /* must be in line with ev_default_fork */
1482	}	1605	}
		1606
		1607	#if EV_VERIFY
		1608	static void noinline
		1609	verify_watcher (EV_P_ W w)
		1610	{
		1611	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1612
		1613	if (w->pending)
		1614	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1615	}
		1616
		1617	static void noinline
		1618	verify_heap (EV_P_ ANHE *heap, int N)
		1619	{
		1620	int i;
		1621
		1622	for (i = HEAP0; i < N + HEAP0; ++i)
		1623	{
		1624	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1625	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1626	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1627
		1628	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1629	}
		1630	}
		1631
		1632	static void noinline
		1633	array_verify (EV_P_ W *ws, int cnt)
		1634	{
		1635	while (cnt--)
		1636	{
		1637	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1638	verify_watcher (EV_A_ ws [cnt]);
		1639	}
		1640	}
		1641	#endif
		1642
		1643	void
		1644	ev_loop_verify (EV_P)
		1645	{
		1646	#if EV_VERIFY
		1647	int i;
		1648	WL w;
		1649
		1650	assert (activecnt >= -1);
		1651
		1652	assert (fdchangemax >= fdchangecnt);
		1653	for (i = 0; i < fdchangecnt; ++i)
		1654	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1655
		1656	assert (anfdmax >= 0);
		1657	for (i = 0; i < anfdmax; ++i)
		1658	for (w = anfds [i].head; w; w = w->next)
		1659	{
		1660	verify_watcher (EV_A_ (W)w);
		1661	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1662	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1663	}
		1664
		1665	assert (timermax >= timercnt);
		1666	verify_heap (EV_A_ timers, timercnt);
		1667
		1668	#if EV_PERIODIC_ENABLE
		1669	assert (periodicmax >= periodiccnt);
		1670	verify_heap (EV_A_ periodics, periodiccnt);
		1671	#endif
		1672
		1673	for (i = NUMPRI; i--; )
		1674	{
		1675	assert (pendingmax [i] >= pendingcnt [i]);
		1676	#if EV_IDLE_ENABLE
		1677	assert (idleall >= 0);
		1678	assert (idlemax [i] >= idlecnt [i]);
		1679	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		1680	#endif
		1681	}
		1682
		1683	#if EV_FORK_ENABLE
		1684	assert (forkmax >= forkcnt);
		1685	array_verify (EV_A_ (W *)forks, forkcnt);
		1686	#endif
		1687
		1688	#if EV_ASYNC_ENABLE
		1689	assert (asyncmax >= asynccnt);
		1690	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1691	#endif
		1692
		1693	assert (preparemax >= preparecnt);
		1694	array_verify (EV_A_ (W *)prepares, preparecnt);
		1695
		1696	assert (checkmax >= checkcnt);
		1697	array_verify (EV_A_ (W *)checks, checkcnt);
		1698
		1699	# if 0
		1700	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1701	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1483	#endif	1702	# endif
		1703	#endif
		1704	}
		1705
		1706	#endif /* multiplicity */
1484		1707
1485	#if EV_MULTIPLICITY	1708	#if EV_MULTIPLICITY
1486	struct ev_loop *	1709	struct ev_loop *
1487	ev_default_loop_init (unsigned int flags)	1710	ev_default_loop_init (unsigned int flags)
1488	#else	1711	#else
…		…
1521	{	1744	{
1522	#if EV_MULTIPLICITY	1745	#if EV_MULTIPLICITY
1523	struct ev_loop *loop = ev_default_loop_ptr;	1746	struct ev_loop *loop = ev_default_loop_ptr;
1524	#endif	1747	#endif
1525		1748
		1749	ev_default_loop_ptr = 0;
		1750
1526	#ifndef _WIN32	1751	#ifndef _WIN32
1527	ev_ref (EV_A); /* child watcher */	1752	ev_ref (EV_A); /* child watcher */
1528	ev_signal_stop (EV_A_ &childev);	1753	ev_signal_stop (EV_A_ &childev);
1529	#endif	1754	#endif
1530		1755
…		…
1536	{	1761	{
1537	#if EV_MULTIPLICITY	1762	#if EV_MULTIPLICITY
1538	struct ev_loop *loop = ev_default_loop_ptr;	1763	struct ev_loop *loop = ev_default_loop_ptr;
1539	#endif	1764	#endif
1540		1765
1541	if (backend)
1542	postfork = 1; /* must be in line with ev_loop_fork */	1766	postfork = 1; /* must be in line with ev_loop_fork */
1543	}	1767	}
1544		1768
1545	/*****************************************************************************/	1769	/*****************************************************************************/
1546		1770
1547	void	1771	void
1548	ev_invoke (EV_P_ void *w, int revents)	1772	ev_invoke (EV_P_ void *w, int revents)
1549	{	1773	{
1550	EV_CB_INVOKE ((W)w, revents);	1774	EV_CB_INVOKE ((W)w, revents);
1551	}	1775	}
1552		1776
1553	void inline_speed	1777	inline_speed void
1554	call_pending (EV_P)	1778	call_pending (EV_P)
1555	{	1779	{
1556	int pri;	1780	int pri;
1557		1781
1558	for (pri = NUMPRI; pri--; )	1782	for (pri = NUMPRI; pri--; )
1559	while (pendingcnt [pri])	1783	while (pendingcnt [pri])
1560	{	1784	{
1561	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1785	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1562		1786
1563	if (expect_true (p->w))
1564	{
1565	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1787	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1788	/* ^ this is no longer true, as pending_w could be here */
1566		1789
1567	p->w->pending = 0;	1790	p->w->pending = 0;
1568	EV_CB_INVOKE (p->w, p->events);	1791	EV_CB_INVOKE (p->w, p->events);
1569	}	1792	EV_FREQUENT_CHECK;
1570	}	1793	}
1571	}	1794	}
1572		1795
1573	#if EV_IDLE_ENABLE	1796	#if EV_IDLE_ENABLE
1574	void inline_size	1797	/* make idle watchers pending. this handles the "call-idle */
		1798	/* only when higher priorities are idle" logic */
		1799	inline_size void
1575	idle_reify (EV_P)	1800	idle_reify (EV_P)
1576	{	1801	{
1577	if (expect_false (idleall))	1802	if (expect_false (idleall))
1578	{	1803	{
1579	int pri;	1804	int pri;
…		…
1591	}	1816	}
1592	}	1817	}
1593	}	1818	}
1594	#endif	1819	#endif
1595		1820
1596	void inline_size	1821	/* make timers pending */
		1822	inline_size void
1597	timers_reify (EV_P)	1823	timers_reify (EV_P)
1598	{	1824	{
		1825	EV_FREQUENT_CHECK;
		1826
1599	while (timercnt && ANHE_at (timers [HEAP0]) <= mn_now)	1827	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1600	{	1828	{
1601	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	1829	do
1602
1603	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1604
1605	/* first reschedule or stop timer */
1606	if (w->repeat)
1607	{	1830	{
		1831	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1832
		1833	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		1834
		1835	/* first reschedule or stop timer */
		1836	if (w->repeat)
		1837	{
		1838	ev_at (w) += w->repeat;
		1839	if (ev_at (w) < mn_now)
		1840	ev_at (w) = mn_now;
		1841
1608	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1842	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1609		1843
1610	ev_at (w) += w->repeat;	1844	ANHE_at_cache (timers [HEAP0]);
1611	if (ev_at (w) < mn_now)
1612	ev_at (w) = mn_now;
1613
1614	downheap (timers, timercnt, HEAP0);	1845	downheap (timers, timercnt, HEAP0);
		1846	}
		1847	else
		1848	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1849
		1850	EV_FREQUENT_CHECK;
		1851	feed_reverse (EV_A_ (W)w);
1615	}	1852	}
1616	else	1853	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1617	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1618		1854
1619	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1855	feed_reverse_done (EV_A_ EV_TIMEOUT);
1620	}	1856	}
1621	}	1857	}
1622		1858
1623	#if EV_PERIODIC_ENABLE	1859	#if EV_PERIODIC_ENABLE
1624	void inline_size	1860	/* make periodics pending */
		1861	inline_size void
1625	periodics_reify (EV_P)	1862	periodics_reify (EV_P)
1626	{	1863	{
		1864	EV_FREQUENT_CHECK;
		1865
1627	while (periodiccnt && ANHE_at (periodics [HEAP0]) <= ev_rt_now)	1866	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1628	{	1867	{
1629	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	1868	int feed_count = 0;
1630		1869
1631	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	1870	do
1632
1633	/* first reschedule or stop timer */
1634	if (w->reschedule_cb)
1635	{	1871	{
		1872	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1873
		1874	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		1875
		1876	/* first reschedule or stop timer */
		1877	if (w->reschedule_cb)
		1878	{
1636	ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);	1879	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1880
1637	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));	1881	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		1882
		1883	ANHE_at_cache (periodics [HEAP0]);
1638	downheap (periodics, periodiccnt, 1);	1884	downheap (periodics, periodiccnt, HEAP0);
		1885	}
		1886	else if (w->interval)
		1887	{
		1888	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1889	/* if next trigger time is not sufficiently in the future, put it there */
		1890	/* this might happen because of floating point inexactness */
		1891	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1892	{
		1893	ev_at (w) += w->interval;
		1894
		1895	/* if interval is unreasonably low we might still have a time in the past */
		1896	/* so correct this. this will make the periodic very inexact, but the user */
		1897	/* has effectively asked to get triggered more often than possible */
		1898	if (ev_at (w) < ev_rt_now)
		1899	ev_at (w) = ev_rt_now;
		1900	}
		1901
		1902	ANHE_at_cache (periodics [HEAP0]);
		1903	downheap (periodics, periodiccnt, HEAP0);
		1904	}
		1905	else
		1906	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1907
		1908	EV_FREQUENT_CHECK;
		1909	feed_reverse (EV_A_ (W)w);
1639	}	1910	}
1640	else if (w->interval)	1911	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1641	{
1642	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1643	if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1644	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1645	downheap (periodics, periodiccnt, HEAP0);
1646	}
1647	else
1648	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1649		1912
1650	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1913	feed_reverse_done (EV_A_ EV_PERIODIC);
1651	}	1914	}
1652	}	1915	}
1653		1916
		1917	/* simply recalculate all periodics */
		1918	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1654	static void noinline	1919	static void noinline
1655	periodics_reschedule (EV_P)	1920	periodics_reschedule (EV_P)
1656	{	1921	{
1657	int i;	1922	int i;
1658		1923
…		…
1663		1928
1664	if (w->reschedule_cb)	1929	if (w->reschedule_cb)
1665	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1930	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1666	else if (w->interval)	1931	else if (w->interval)
1667	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	1932	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1933
		1934	ANHE_at_cache (periodics [i]);
		1935	}
		1936
		1937	reheap (periodics, periodiccnt);
		1938	}
		1939	#endif
		1940
		1941	/* adjust all timers by a given offset */
		1942	static void noinline
		1943	timers_reschedule (EV_P_ ev_tstamp adjust)
		1944	{
		1945	int i;
		1946
		1947	for (i = 0; i < timercnt; ++i)
1668	}	1948	{
1669		1949	ANHE *he = timers + i + HEAP0;
1670	/* now rebuild the heap, this for the 2-heap, inefficient for the 4-heap, but correct */	1950	ANHE_w (*he)->at += adjust;
1671	for (i = periodiccnt >> 1; --i; )	1951	ANHE_at_cache (*he);
1672	downheap (periodics, periodiccnt, i + HEAP0);	1952	}
1673	}	1953	}
1674	#endif
1675		1954
1676	void inline_speed	1955	/* fetch new monotonic and realtime times from the kernel */
		1956	/* also detetc if there was a timejump, and act accordingly */
		1957	inline_speed void
1677	time_update (EV_P_ ev_tstamp max_block)	1958	time_update (EV_P_ ev_tstamp max_block)
1678	{	1959	{
1679	int i;
1680
1681	#if EV_USE_MONOTONIC	1960	#if EV_USE_MONOTONIC
1682	if (expect_true (have_monotonic))	1961	if (expect_true (have_monotonic))
1683	{	1962	{
		1963	int i;
1684	ev_tstamp odiff = rtmn_diff;	1964	ev_tstamp odiff = rtmn_diff;
1685		1965
1686	mn_now = get_clock ();	1966	mn_now = get_clock ();
1687		1967
1688	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	1968	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1714	ev_rt_now = ev_time ();	1994	ev_rt_now = ev_time ();
1715	mn_now = get_clock ();	1995	mn_now = get_clock ();
1716	now_floor = mn_now;	1996	now_floor = mn_now;
1717	}	1997	}
1718		1998
		1999	/* no timer adjustment, as the monotonic clock doesn't jump */
		2000	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1719	# if EV_PERIODIC_ENABLE	2001	# if EV_PERIODIC_ENABLE
1720	periodics_reschedule (EV_A);	2002	periodics_reschedule (EV_A);
1721	# endif	2003	# endif
1722	/* no timer adjustment, as the monotonic clock doesn't jump */
1723	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1724	}	2004	}
1725	else	2005	else
1726	#endif	2006	#endif
1727	{	2007	{
1728	ev_rt_now = ev_time ();	2008	ev_rt_now = ev_time ();
1729		2009
1730	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2010	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1731	{	2011	{
		2012	/* adjust timers. this is easy, as the offset is the same for all of them */
		2013	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1732	#if EV_PERIODIC_ENABLE	2014	#if EV_PERIODIC_ENABLE
1733	periodics_reschedule (EV_A);	2015	periodics_reschedule (EV_A);
1734	#endif	2016	#endif
1735	/* adjust timers. this is easy, as the offset is the same for all of them */
1736	for (i = 0; i < timercnt; ++i)
1737	{
1738	ANHE *he = timers + i + HEAP0;
1739	ANHE_w (*he)->at += ev_rt_now - mn_now;
1740	ANHE_at_set (*he);
1741	}
1742	}	2017	}
1743		2018
1744	mn_now = ev_rt_now;	2019	mn_now = ev_rt_now;
1745	}	2020	}
1746	}	2021	}
1747		2022
1748	void
1749	ev_ref (EV_P)
1750	{
1751	++activecnt;
1752	}
1753
1754	void
1755	ev_unref (EV_P)
1756	{
1757	--activecnt;
1758	}
1759
1760	static int loop_done;	2023	static int loop_done;
1761		2024
1762	void	2025	void
1763	ev_loop (EV_P_ int flags)	2026	ev_loop (EV_P_ int flags)
1764	{	2027	{
…		…
1766		2029
1767	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2030	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1768		2031
1769	do	2032	do
1770	{	2033	{
		2034	#if EV_VERIFY >= 2
		2035	ev_loop_verify (EV_A);
		2036	#endif
		2037
1771	#ifndef _WIN32	2038	#ifndef _WIN32
1772	if (expect_false (curpid)) /* penalise the forking check even more */	2039	if (expect_false (curpid)) /* penalise the forking check even more */
1773	if (expect_false (getpid () != curpid))	2040	if (expect_false (getpid () != curpid))
1774	{	2041	{
1775	curpid = getpid ();	2042	curpid = getpid ();
…		…
1792	{	2059	{
1793	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2060	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1794	call_pending (EV_A);	2061	call_pending (EV_A);
1795	}	2062	}
1796		2063
1797	if (expect_false (!activecnt))
1798	break;
1799
1800	/* we might have forked, so reify kernel state if necessary */	2064	/* we might have forked, so reify kernel state if necessary */
1801	if (expect_false (postfork))	2065	if (expect_false (postfork))
1802	loop_fork (EV_A);	2066	loop_fork (EV_A);
1803		2067
1804	/* update fd-related kernel structures */	2068	/* update fd-related kernel structures */
…		…
1883	ev_unloop (EV_P_ int how)	2147	ev_unloop (EV_P_ int how)
1884	{	2148	{
1885	loop_done = how;	2149	loop_done = how;
1886	}	2150	}
1887		2151
		2152	void
		2153	ev_ref (EV_P)
		2154	{
		2155	++activecnt;
		2156	}
		2157
		2158	void
		2159	ev_unref (EV_P)
		2160	{
		2161	--activecnt;
		2162	}
		2163
		2164	void
		2165	ev_now_update (EV_P)
		2166	{
		2167	time_update (EV_A_ 1e100);
		2168	}
		2169
		2170	void
		2171	ev_suspend (EV_P)
		2172	{
		2173	ev_now_update (EV_A);
		2174	}
		2175
		2176	void
		2177	ev_resume (EV_P)
		2178	{
		2179	ev_tstamp mn_prev = mn_now;
		2180
		2181	ev_now_update (EV_A);
		2182	timers_reschedule (EV_A_ mn_now - mn_prev);
		2183	#if EV_PERIODIC_ENABLE
		2184	/* TODO: really do this? */
		2185	periodics_reschedule (EV_A);
		2186	#endif
		2187	}
		2188
1888	/*****************************************************************************/	2189	/*****************************************************************************/
		2190	/* singly-linked list management, used when the expected list length is short */
1889		2191
1890	void inline_size	2192	inline_size void
1891	wlist_add (WL *head, WL elem)	2193	wlist_add (WL *head, WL elem)
1892	{	2194	{
1893	elem->next = *head;	2195	elem->next = *head;
1894	*head = elem;	2196	*head = elem;
1895	}	2197	}
1896		2198
1897	void inline_size	2199	inline_size void
1898	wlist_del (WL *head, WL elem)	2200	wlist_del (WL *head, WL elem)
1899	{	2201	{
1900	while (*head)	2202	while (*head)
1901	{	2203	{
1902	if (*head == elem)	2204	if (*head == elem)
…		…
1907		2209
1908	head = &(*head)->next;	2210	head = &(*head)->next;
1909	}	2211	}
1910	}	2212	}
1911		2213
1912	void inline_speed	2214	/* internal, faster, version of ev_clear_pending */
		2215	inline_speed void
1913	clear_pending (EV_P_ W w)	2216	clear_pending (EV_P_ W w)
1914	{	2217	{
1915	if (w->pending)	2218	if (w->pending)
1916	{	2219	{
1917	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2220	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1918	w->pending = 0;	2221	w->pending = 0;
1919	}	2222	}
1920	}	2223	}
1921		2224
1922	int	2225	int
…		…
1926	int pending = w_->pending;	2229	int pending = w_->pending;
1927		2230
1928	if (expect_true (pending))	2231	if (expect_true (pending))
1929	{	2232	{
1930	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2233	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2234	p->w = (W)&pending_w;
1931	w_->pending = 0;	2235	w_->pending = 0;
1932	p->w = 0;
1933	return p->events;	2236	return p->events;
1934	}	2237	}
1935	else	2238	else
1936	return 0;	2239	return 0;
1937	}	2240	}
1938		2241
1939	void inline_size	2242	inline_size void
1940	pri_adjust (EV_P_ W w)	2243	pri_adjust (EV_P_ W w)
1941	{	2244	{
1942	int pri = w->priority;	2245	int pri = w->priority;
1943	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2246	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1944	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2247	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1945	w->priority = pri;	2248	w->priority = pri;
1946	}	2249	}
1947		2250
1948	void inline_speed	2251	inline_speed void
1949	ev_start (EV_P_ W w, int active)	2252	ev_start (EV_P_ W w, int active)
1950	{	2253	{
1951	pri_adjust (EV_A_ w);	2254	pri_adjust (EV_A_ w);
1952	w->active = active;	2255	w->active = active;
1953	ev_ref (EV_A);	2256	ev_ref (EV_A);
1954	}	2257	}
1955		2258
1956	void inline_size	2259	inline_size void
1957	ev_stop (EV_P_ W w)	2260	ev_stop (EV_P_ W w)
1958	{	2261	{
1959	ev_unref (EV_A);	2262	ev_unref (EV_A);
1960	w->active = 0;	2263	w->active = 0;
1961	}	2264	}
…		…
1968	int fd = w->fd;	2271	int fd = w->fd;
1969		2272
1970	if (expect_false (ev_is_active (w)))	2273	if (expect_false (ev_is_active (w)))
1971	return;	2274	return;
1972		2275
1973	assert (("ev_io_start called with negative fd", fd >= 0));	2276	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2277	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
		2278
		2279	EV_FREQUENT_CHECK;
1974		2280
1975	ev_start (EV_A_ (W)w, 1);	2281	ev_start (EV_A_ (W)w, 1);
1976	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2282	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1977	wlist_add (&anfds[fd].head, (WL)w);	2283	wlist_add (&anfds[fd].head, (WL)w);
1978		2284
1979	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2285	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
1980	w->events &= ~EV_IOFDSET;	2286	w->events &= ~EV__IOFDSET;
		2287
		2288	EV_FREQUENT_CHECK;
1981	}	2289	}
1982		2290
1983	void noinline	2291	void noinline
1984	ev_io_stop (EV_P_ ev_io *w)	2292	ev_io_stop (EV_P_ ev_io *w)
1985	{	2293	{
1986	clear_pending (EV_A_ (W)w);	2294	clear_pending (EV_A_ (W)w);
1987	if (expect_false (!ev_is_active (w)))	2295	if (expect_false (!ev_is_active (w)))
1988	return;	2296	return;
1989		2297
1990	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2298	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		2299
		2300	EV_FREQUENT_CHECK;
1991		2301
1992	wlist_del (&anfds[w->fd].head, (WL)w);	2302	wlist_del (&anfds[w->fd].head, (WL)w);
1993	ev_stop (EV_A_ (W)w);	2303	ev_stop (EV_A_ (W)w);
1994		2304
1995	fd_change (EV_A_ w->fd, 1);	2305	fd_change (EV_A_ w->fd, 1);
		2306
		2307	EV_FREQUENT_CHECK;
1996	}	2308	}
1997		2309
1998	void noinline	2310	void noinline
1999	ev_timer_start (EV_P_ ev_timer *w)	2311	ev_timer_start (EV_P_ ev_timer *w)
2000	{	2312	{
2001	if (expect_false (ev_is_active (w)))	2313	if (expect_false (ev_is_active (w)))
2002	return;	2314	return;
2003		2315
2004	ev_at (w) += mn_now;	2316	ev_at (w) += mn_now;
2005		2317
2006	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2318	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2007		2319
		2320	EV_FREQUENT_CHECK;
		2321
		2322	++timercnt;
2008	ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1);	2323	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2009	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);	2324	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
2010	ANHE_w (timers [ev_active (w)]) = (WT)w;	2325	ANHE_w (timers [ev_active (w)]) = (WT)w;
2011	ANHE_at_set (timers [ev_active (w)]);	2326	ANHE_at_cache (timers [ev_active (w)]);
2012	upheap (timers, ev_active (w));	2327	upheap (timers, ev_active (w));
2013		2328
		2329	EV_FREQUENT_CHECK;
		2330
2014	/*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/	2331	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2015	}	2332	}
2016		2333
2017	void noinline	2334	void noinline
2018	ev_timer_stop (EV_P_ ev_timer *w)	2335	ev_timer_stop (EV_P_ ev_timer *w)
2019	{	2336	{
2020	clear_pending (EV_A_ (W)w);	2337	clear_pending (EV_A_ (W)w);
2021	if (expect_false (!ev_is_active (w)))	2338	if (expect_false (!ev_is_active (w)))
2022	return;	2339	return;
2023		2340
		2341	EV_FREQUENT_CHECK;
		2342
2024	{	2343	{
2025	int active = ev_active (w);	2344	int active = ev_active (w);
2026		2345
2027	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2346	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2028		2347
		2348	--timercnt;
		2349
2029	if (expect_true (active < timercnt + HEAP0 - 1))	2350	if (expect_true (active < timercnt + HEAP0))
2030	{	2351	{
2031	timers [active] = timers [timercnt + HEAP0 - 1];	2352	timers [active] = timers [timercnt + HEAP0];
2032	adjustheap (timers, timercnt, active);	2353	adjustheap (timers, timercnt, active);
2033	}	2354	}
2034
2035	--timercnt;
2036	}	2355	}
		2356
		2357	EV_FREQUENT_CHECK;
2037		2358
2038	ev_at (w) -= mn_now;	2359	ev_at (w) -= mn_now;
2039		2360
2040	ev_stop (EV_A_ (W)w);	2361	ev_stop (EV_A_ (W)w);
2041	}	2362	}
2042		2363
2043	void noinline	2364	void noinline
2044	ev_timer_again (EV_P_ ev_timer *w)	2365	ev_timer_again (EV_P_ ev_timer *w)
2045	{	2366	{
		2367	EV_FREQUENT_CHECK;
		2368
2046	if (ev_is_active (w))	2369	if (ev_is_active (w))
2047	{	2370	{
2048	if (w->repeat)	2371	if (w->repeat)
2049	{	2372	{
2050	ev_at (w) = mn_now + w->repeat;	2373	ev_at (w) = mn_now + w->repeat;
2051	ANHE_at_set (timers [ev_active (w)]);	2374	ANHE_at_cache (timers [ev_active (w)]);
2052	adjustheap (timers, timercnt, ev_active (w));	2375	adjustheap (timers, timercnt, ev_active (w));
2053	}	2376	}
2054	else	2377	else
2055	ev_timer_stop (EV_A_ w);	2378	ev_timer_stop (EV_A_ w);
2056	}	2379	}
2057	else if (w->repeat)	2380	else if (w->repeat)
2058	{	2381	{
2059	ev_at (w) = w->repeat;	2382	ev_at (w) = w->repeat;
2060	ev_timer_start (EV_A_ w);	2383	ev_timer_start (EV_A_ w);
2061	}	2384	}
		2385
		2386	EV_FREQUENT_CHECK;
2062	}	2387	}
2063		2388
2064	#if EV_PERIODIC_ENABLE	2389	#if EV_PERIODIC_ENABLE
2065	void noinline	2390	void noinline
2066	ev_periodic_start (EV_P_ ev_periodic *w)	2391	ev_periodic_start (EV_P_ ev_periodic *w)
…		…
2070		2395
2071	if (w->reschedule_cb)	2396	if (w->reschedule_cb)
2072	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2397	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2073	else if (w->interval)	2398	else if (w->interval)
2074	{	2399	{
2075	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2400	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2076	/* this formula differs from the one in periodic_reify because we do not always round up */	2401	/* this formula differs from the one in periodic_reify because we do not always round up */
2077	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2402	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2078	}	2403	}
2079	else	2404	else
2080	ev_at (w) = w->offset;	2405	ev_at (w) = w->offset;
2081		2406
		2407	EV_FREQUENT_CHECK;
		2408
		2409	++periodiccnt;
2082	ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1);	2410	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2083	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);	2411	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2084	ANHE_w (periodics [ev_active (w)]) = (WT)w;	2412	ANHE_w (periodics [ev_active (w)]) = (WT)w;
		2413	ANHE_at_cache (periodics [ev_active (w)]);
2085	upheap (periodics, ev_active (w));	2414	upheap (periodics, ev_active (w));
2086		2415
		2416	EV_FREQUENT_CHECK;
		2417
2087	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2418	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2088	}	2419	}
2089		2420
2090	void noinline	2421	void noinline
2091	ev_periodic_stop (EV_P_ ev_periodic *w)	2422	ev_periodic_stop (EV_P_ ev_periodic *w)
2092	{	2423	{
2093	clear_pending (EV_A_ (W)w);	2424	clear_pending (EV_A_ (W)w);
2094	if (expect_false (!ev_is_active (w)))	2425	if (expect_false (!ev_is_active (w)))
2095	return;	2426	return;
2096		2427
		2428	EV_FREQUENT_CHECK;
		2429
2097	{	2430	{
2098	int active = ev_active (w);	2431	int active = ev_active (w);
2099		2432
2100	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2433	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2101		2434
		2435	--periodiccnt;
		2436
2102	if (expect_true (active < periodiccnt + HEAP0 - 1))	2437	if (expect_true (active < periodiccnt + HEAP0))
2103	{	2438	{
2104	periodics [active] = periodics [periodiccnt + HEAP0 - 1];	2439	periodics [active] = periodics [periodiccnt + HEAP0];
2105	adjustheap (periodics, periodiccnt, active);	2440	adjustheap (periodics, periodiccnt, active);
2106	}	2441	}
2107
2108	--periodiccnt;
2109	}	2442	}
		2443
		2444	EV_FREQUENT_CHECK;
2110		2445
2111	ev_stop (EV_A_ (W)w);	2446	ev_stop (EV_A_ (W)w);
2112	}	2447	}
2113		2448
2114	void noinline	2449	void noinline
…		…
2126		2461
2127	void noinline	2462	void noinline
2128	ev_signal_start (EV_P_ ev_signal *w)	2463	ev_signal_start (EV_P_ ev_signal *w)
2129	{	2464	{
2130	#if EV_MULTIPLICITY	2465	#if EV_MULTIPLICITY
2131	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2466	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2132	#endif	2467	#endif
2133	if (expect_false (ev_is_active (w)))	2468	if (expect_false (ev_is_active (w)))
2134	return;	2469	return;
2135		2470
2136	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2471	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2137		2472
2138	evpipe_init (EV_A);	2473	evpipe_init (EV_A);
		2474
		2475	EV_FREQUENT_CHECK;
2139		2476
2140	{	2477	{
2141	#ifndef _WIN32	2478	#ifndef _WIN32
2142	sigset_t full, prev;	2479	sigset_t full, prev;
2143	sigfillset (&full);	2480	sigfillset (&full);
2144	sigprocmask (SIG_SETMASK, &full, &prev);	2481	sigprocmask (SIG_SETMASK, &full, &prev);
2145	#endif	2482	#endif
2146		2483
2147	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2484	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2148		2485
2149	#ifndef _WIN32	2486	#ifndef _WIN32
2150	sigprocmask (SIG_SETMASK, &prev, 0);	2487	sigprocmask (SIG_SETMASK, &prev, 0);
2151	#endif	2488	#endif
2152	}	2489	}
…		…
2164	sigfillset (&sa.sa_mask);	2501	sigfillset (&sa.sa_mask);
2165	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2502	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2166	sigaction (w->signum, &sa, 0);	2503	sigaction (w->signum, &sa, 0);
2167	#endif	2504	#endif
2168	}	2505	}
		2506
		2507	EV_FREQUENT_CHECK;
2169	}	2508	}
2170		2509
2171	void noinline	2510	void noinline
2172	ev_signal_stop (EV_P_ ev_signal *w)	2511	ev_signal_stop (EV_P_ ev_signal *w)
2173	{	2512	{
2174	clear_pending (EV_A_ (W)w);	2513	clear_pending (EV_A_ (W)w);
2175	if (expect_false (!ev_is_active (w)))	2514	if (expect_false (!ev_is_active (w)))
2176	return;	2515	return;
2177		2516
		2517	EV_FREQUENT_CHECK;
		2518
2178	wlist_del (&signals [w->signum - 1].head, (WL)w);	2519	wlist_del (&signals [w->signum - 1].head, (WL)w);
2179	ev_stop (EV_A_ (W)w);	2520	ev_stop (EV_A_ (W)w);
2180		2521
2181	if (!signals [w->signum - 1].head)	2522	if (!signals [w->signum - 1].head)
2182	signal (w->signum, SIG_DFL);	2523	signal (w->signum, SIG_DFL);
		2524
		2525	EV_FREQUENT_CHECK;
2183	}	2526	}
2184		2527
2185	void	2528	void
2186	ev_child_start (EV_P_ ev_child *w)	2529	ev_child_start (EV_P_ ev_child *w)
2187	{	2530	{
2188	#if EV_MULTIPLICITY	2531	#if EV_MULTIPLICITY
2189	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2532	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2190	#endif	2533	#endif
2191	if (expect_false (ev_is_active (w)))	2534	if (expect_false (ev_is_active (w)))
2192	return;	2535	return;
2193		2536
		2537	EV_FREQUENT_CHECK;
		2538
2194	ev_start (EV_A_ (W)w, 1);	2539	ev_start (EV_A_ (W)w, 1);
2195	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2540	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2541
		2542	EV_FREQUENT_CHECK;
2196	}	2543	}
2197		2544
2198	void	2545	void
2199	ev_child_stop (EV_P_ ev_child *w)	2546	ev_child_stop (EV_P_ ev_child *w)
2200	{	2547	{
2201	clear_pending (EV_A_ (W)w);	2548	clear_pending (EV_A_ (W)w);
2202	if (expect_false (!ev_is_active (w)))	2549	if (expect_false (!ev_is_active (w)))
2203	return;	2550	return;
2204		2551
		2552	EV_FREQUENT_CHECK;
		2553
2205	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2554	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2206	ev_stop (EV_A_ (W)w);	2555	ev_stop (EV_A_ (W)w);
		2556
		2557	EV_FREQUENT_CHECK;
2207	}	2558	}
2208		2559
2209	#if EV_STAT_ENABLE	2560	#if EV_STAT_ENABLE
2210		2561
2211	# ifdef _WIN32	2562	# ifdef _WIN32
2212	# undef lstat	2563	# undef lstat
2213	# define lstat(a,b) _stati64 (a,b)	2564	# define lstat(a,b) _stati64 (a,b)
2214	# endif	2565	# endif
2215		2566
2216	#define DEF_STAT_INTERVAL 5.0074891	2567	#define DEF_STAT_INTERVAL 5.0074891
		2568	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2217	#define MIN_STAT_INTERVAL 0.1074891	2569	#define MIN_STAT_INTERVAL 0.1074891
2218		2570
2219	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2571	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2220		2572
2221	#if EV_USE_INOTIFY	2573	#if EV_USE_INOTIFY
2222	# define EV_INOTIFY_BUFSIZE 8192	2574	# define EV_INOTIFY_BUFSIZE 8192
…		…
2226	{	2578	{
2227	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);	2579	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);
2228		2580
2229	if (w->wd < 0)	2581	if (w->wd < 0)
2230	{	2582	{
		2583	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2231	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2584	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2232		2585
2233	/* monitor some parent directory for speedup hints */	2586	/* monitor some parent directory for speedup hints */
2234	/* note that exceeding the hardcoded limit is not a correctness issue, */	2587	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2235	/* but an efficiency issue only */	2588	/* but an efficiency issue only */
2236	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2589	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2237	{	2590	{
2238	char path [4096];	2591	char path [4096];
2239	strcpy (path, w->path);	2592	strcpy (path, w->path);
…		…
2243	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2596	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2244	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2597	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2245		2598
2246	char *pend = strrchr (path, '/');	2599	char *pend = strrchr (path, '/');
2247		2600
2248	if (!pend)	2601	if (!pend || pend == path)
2249	break; /* whoops, no '/', complain to your admin */	2602	break;
2250		2603
2251	*pend = 0;	2604	*pend = 0;
2252	w->wd = inotify_add_watch (fs_fd, path, mask);	2605	w->wd = inotify_add_watch (fs_fd, path, mask);
2253	}	2606	}
2254	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2607	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2255	}	2608	}
2256	}	2609	}
2257	else
2258	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2259		2610
2260	if (w->wd >= 0)	2611	if (w->wd >= 0)
		2612	{
2261	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2613	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2614
		2615	/* now local changes will be tracked by inotify, but remote changes won't */
		2616	/* unless the filesystem it known to be local, we therefore still poll */
		2617	/* also do poll on <2.6.25, but with normal frequency */
		2618	struct statfs sfs;
		2619
		2620	if (fs_2625 && !statfs (w->path, &sfs))
		2621	if (sfs.f_type == 0x1373 /* devfs */
		2622	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2623	|| sfs.f_type == 0x3153464a /* jfs */
		2624	|| sfs.f_type == 0x52654973 /* reiser3 */
		2625	|| sfs.f_type == 0x01021994 /* tempfs */
		2626	|| sfs.f_type == 0x58465342 /* xfs */)
		2627	return;
		2628
		2629	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2630	ev_timer_again (EV_A_ &w->timer);
		2631	}
2262	}	2632	}
2263		2633
2264	static void noinline	2634	static void noinline
2265	infy_del (EV_P_ ev_stat *w)	2635	infy_del (EV_P_ ev_stat *w)
2266	{	2636	{
…		…
2280		2650
2281	static void noinline	2651	static void noinline
2282	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2652	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2283	{	2653	{
2284	if (slot < 0)	2654	if (slot < 0)
2285	/* overflow, need to check for all hahs slots */	2655	/* overflow, need to check for all hash slots */
2286	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2656	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2287	infy_wd (EV_A_ slot, wd, ev);	2657	infy_wd (EV_A_ slot, wd, ev);
2288	else	2658	else
2289	{	2659	{
2290	WL w_;	2660	WL w_;
…		…
2296		2666
2297	if (w->wd == wd || wd == -1)	2667	if (w->wd == wd || wd == -1)
2298	{	2668	{
2299	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2669	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2300	{	2670	{
		2671	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2301	w->wd = -1;	2672	w->wd = -1;
2302	infy_add (EV_A_ w); /* re-add, no matter what */	2673	infy_add (EV_A_ w); /* re-add, no matter what */
2303	}	2674	}
2304		2675
2305	stat_timer_cb (EV_A_ &w->timer, 0);	2676	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2318		2689
2319	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2690	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2320	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2691	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2321	}	2692	}
2322		2693
2323	void inline_size	2694	inline_size void
		2695	check_2625 (EV_P)
		2696	{
		2697	/* kernels < 2.6.25 are borked
		2698	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2699	*/
		2700	struct utsname buf;
		2701	int major, minor, micro;
		2702
		2703	if (uname (&buf))
		2704	return;
		2705
		2706	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2707	return;
		2708
		2709	if (major < 2
		2710	|| (major == 2 && minor < 6)
		2711	|| (major == 2 && minor == 6 && micro < 25))
		2712	return;
		2713
		2714	fs_2625 = 1;
		2715	}
		2716
		2717	inline_size void
2324	infy_init (EV_P)	2718	infy_init (EV_P)
2325	{	2719	{
2326	if (fs_fd != -2)	2720	if (fs_fd != -2)
2327	return;	2721	return;
		2722
		2723	fs_fd = -1;
		2724
		2725	check_2625 (EV_A);
2328		2726
2329	fs_fd = inotify_init ();	2727	fs_fd = inotify_init ();
2330		2728
2331	if (fs_fd >= 0)	2729	if (fs_fd >= 0)
2332	{	2730	{
…		…
2334	ev_set_priority (&fs_w, EV_MAXPRI);	2732	ev_set_priority (&fs_w, EV_MAXPRI);
2335	ev_io_start (EV_A_ &fs_w);	2733	ev_io_start (EV_A_ &fs_w);
2336	}	2734	}
2337	}	2735	}
2338		2736
2339	void inline_size	2737	inline_size void
2340	infy_fork (EV_P)	2738	infy_fork (EV_P)
2341	{	2739	{
2342	int slot;	2740	int slot;
2343		2741
2344	if (fs_fd < 0)	2742	if (fs_fd < 0)
…		…
2360	w->wd = -1;	2758	w->wd = -1;
2361		2759
2362	if (fs_fd >= 0)	2760	if (fs_fd >= 0)
2363	infy_add (EV_A_ w); /* re-add, no matter what */	2761	infy_add (EV_A_ w); /* re-add, no matter what */
2364	else	2762	else
2365	ev_timer_start (EV_A_ &w->timer);	2763	ev_timer_again (EV_A_ &w->timer);
2366	}	2764	}
2367
2368	}	2765	}
2369	}	2766	}
2370		2767
		2768	#endif
		2769
		2770	#ifdef _WIN32
		2771	# define EV_LSTAT(p,b) _stati64 (p, b)
		2772	#else
		2773	# define EV_LSTAT(p,b) lstat (p, b)
2371	#endif	2774	#endif
2372		2775
2373	void	2776	void
2374	ev_stat_stat (EV_P_ ev_stat *w)	2777	ev_stat_stat (EV_P_ ev_stat *w)
2375	{	2778	{
…		…
2402	|| w->prev.st_atime != w->attr.st_atime	2805	|| w->prev.st_atime != w->attr.st_atime
2403	|| w->prev.st_mtime != w->attr.st_mtime	2806	|| w->prev.st_mtime != w->attr.st_mtime
2404	|| w->prev.st_ctime != w->attr.st_ctime	2807	|| w->prev.st_ctime != w->attr.st_ctime
2405	) {	2808	) {
2406	#if EV_USE_INOTIFY	2809	#if EV_USE_INOTIFY
		2810	if (fs_fd >= 0)
		2811	{
2407	infy_del (EV_A_ w);	2812	infy_del (EV_A_ w);
2408	infy_add (EV_A_ w);	2813	infy_add (EV_A_ w);
2409	ev_stat_stat (EV_A_ w); /* avoid race... */	2814	ev_stat_stat (EV_A_ w); /* avoid race... */
		2815	}
2410	#endif	2816	#endif
2411		2817
2412	ev_feed_event (EV_A_ w, EV_STAT);	2818	ev_feed_event (EV_A_ w, EV_STAT);
2413	}	2819	}
2414	}	2820	}
…		…
2417	ev_stat_start (EV_P_ ev_stat *w)	2823	ev_stat_start (EV_P_ ev_stat *w)
2418	{	2824	{
2419	if (expect_false (ev_is_active (w)))	2825	if (expect_false (ev_is_active (w)))
2420	return;	2826	return;
2421		2827
2422	/* since we use memcmp, we need to clear any padding data etc. */
2423	memset (&w->prev, 0, sizeof (ev_statdata));
2424	memset (&w->attr, 0, sizeof (ev_statdata));
2425
2426	ev_stat_stat (EV_A_ w);	2828	ev_stat_stat (EV_A_ w);
2427		2829
		2830	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2428	if (w->interval < MIN_STAT_INTERVAL)	2831	w->interval = MIN_STAT_INTERVAL;
2429	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2430		2832
2431	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2833	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2432	ev_set_priority (&w->timer, ev_priority (w));	2834	ev_set_priority (&w->timer, ev_priority (w));
2433		2835
2434	#if EV_USE_INOTIFY	2836	#if EV_USE_INOTIFY
2435	infy_init (EV_A);	2837	infy_init (EV_A);
2436		2838
2437	if (fs_fd >= 0)	2839	if (fs_fd >= 0)
2438	infy_add (EV_A_ w);	2840	infy_add (EV_A_ w);
2439	else	2841	else
2440	#endif	2842	#endif
2441	ev_timer_start (EV_A_ &w->timer);	2843	ev_timer_again (EV_A_ &w->timer);
2442		2844
2443	ev_start (EV_A_ (W)w, 1);	2845	ev_start (EV_A_ (W)w, 1);
		2846
		2847	EV_FREQUENT_CHECK;
2444	}	2848	}
2445		2849
2446	void	2850	void
2447	ev_stat_stop (EV_P_ ev_stat *w)	2851	ev_stat_stop (EV_P_ ev_stat *w)
2448	{	2852	{
2449	clear_pending (EV_A_ (W)w);	2853	clear_pending (EV_A_ (W)w);
2450	if (expect_false (!ev_is_active (w)))	2854	if (expect_false (!ev_is_active (w)))
2451	return;	2855	return;
2452		2856
		2857	EV_FREQUENT_CHECK;
		2858
2453	#if EV_USE_INOTIFY	2859	#if EV_USE_INOTIFY
2454	infy_del (EV_A_ w);	2860	infy_del (EV_A_ w);
2455	#endif	2861	#endif
2456	ev_timer_stop (EV_A_ &w->timer);	2862	ev_timer_stop (EV_A_ &w->timer);
2457		2863
2458	ev_stop (EV_A_ (W)w);	2864	ev_stop (EV_A_ (W)w);
		2865
		2866	EV_FREQUENT_CHECK;
2459	}	2867	}
2460	#endif	2868	#endif
2461		2869
2462	#if EV_IDLE_ENABLE	2870	#if EV_IDLE_ENABLE
2463	void	2871	void
…		…
2465	{	2873	{
2466	if (expect_false (ev_is_active (w)))	2874	if (expect_false (ev_is_active (w)))
2467	return;	2875	return;
2468		2876
2469	pri_adjust (EV_A_ (W)w);	2877	pri_adjust (EV_A_ (W)w);
		2878
		2879	EV_FREQUENT_CHECK;
2470		2880
2471	{	2881	{
2472	int active = ++idlecnt [ABSPRI (w)];	2882	int active = ++idlecnt [ABSPRI (w)];
2473		2883
2474	++idleall;	2884	++idleall;
2475	ev_start (EV_A_ (W)w, active);	2885	ev_start (EV_A_ (W)w, active);
2476		2886
2477	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	2887	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2478	idles [ABSPRI (w)][active - 1] = w;	2888	idles [ABSPRI (w)][active - 1] = w;
2479	}	2889	}
		2890
		2891	EV_FREQUENT_CHECK;
2480	}	2892	}
2481		2893
2482	void	2894	void
2483	ev_idle_stop (EV_P_ ev_idle *w)	2895	ev_idle_stop (EV_P_ ev_idle *w)
2484	{	2896	{
2485	clear_pending (EV_A_ (W)w);	2897	clear_pending (EV_A_ (W)w);
2486	if (expect_false (!ev_is_active (w)))	2898	if (expect_false (!ev_is_active (w)))
2487	return;	2899	return;
2488		2900
		2901	EV_FREQUENT_CHECK;
		2902
2489	{	2903	{
2490	int active = ev_active (w);	2904	int active = ev_active (w);
2491		2905
2492	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	2906	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2493	ev_active (idles [ABSPRI (w)][active - 1]) = active;	2907	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2494		2908
2495	ev_stop (EV_A_ (W)w);	2909	ev_stop (EV_A_ (W)w);
2496	--idleall;	2910	--idleall;
2497	}	2911	}
		2912
		2913	EV_FREQUENT_CHECK;
2498	}	2914	}
2499	#endif	2915	#endif
2500		2916
2501	void	2917	void
2502	ev_prepare_start (EV_P_ ev_prepare *w)	2918	ev_prepare_start (EV_P_ ev_prepare *w)
2503	{	2919	{
2504	if (expect_false (ev_is_active (w)))	2920	if (expect_false (ev_is_active (w)))
2505	return;	2921	return;
		2922
		2923	EV_FREQUENT_CHECK;
2506		2924
2507	ev_start (EV_A_ (W)w, ++preparecnt);	2925	ev_start (EV_A_ (W)w, ++preparecnt);
2508	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	2926	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2509	prepares [preparecnt - 1] = w;	2927	prepares [preparecnt - 1] = w;
		2928
		2929	EV_FREQUENT_CHECK;
2510	}	2930	}
2511		2931
2512	void	2932	void
2513	ev_prepare_stop (EV_P_ ev_prepare *w)	2933	ev_prepare_stop (EV_P_ ev_prepare *w)
2514	{	2934	{
2515	clear_pending (EV_A_ (W)w);	2935	clear_pending (EV_A_ (W)w);
2516	if (expect_false (!ev_is_active (w)))	2936	if (expect_false (!ev_is_active (w)))
2517	return;	2937	return;
2518		2938
		2939	EV_FREQUENT_CHECK;
		2940
2519	{	2941	{
2520	int active = ev_active (w);	2942	int active = ev_active (w);
2521		2943
2522	prepares [active - 1] = prepares [--preparecnt];	2944	prepares [active - 1] = prepares [--preparecnt];
2523	ev_active (prepares [active - 1]) = active;	2945	ev_active (prepares [active - 1]) = active;
2524	}	2946	}
2525		2947
2526	ev_stop (EV_A_ (W)w);	2948	ev_stop (EV_A_ (W)w);
		2949
		2950	EV_FREQUENT_CHECK;
2527	}	2951	}
2528		2952
2529	void	2953	void
2530	ev_check_start (EV_P_ ev_check *w)	2954	ev_check_start (EV_P_ ev_check *w)
2531	{	2955	{
2532	if (expect_false (ev_is_active (w)))	2956	if (expect_false (ev_is_active (w)))
2533	return;	2957	return;
		2958
		2959	EV_FREQUENT_CHECK;
2534		2960
2535	ev_start (EV_A_ (W)w, ++checkcnt);	2961	ev_start (EV_A_ (W)w, ++checkcnt);
2536	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	2962	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2537	checks [checkcnt - 1] = w;	2963	checks [checkcnt - 1] = w;
		2964
		2965	EV_FREQUENT_CHECK;
2538	}	2966	}
2539		2967
2540	void	2968	void
2541	ev_check_stop (EV_P_ ev_check *w)	2969	ev_check_stop (EV_P_ ev_check *w)
2542	{	2970	{
2543	clear_pending (EV_A_ (W)w);	2971	clear_pending (EV_A_ (W)w);
2544	if (expect_false (!ev_is_active (w)))	2972	if (expect_false (!ev_is_active (w)))
2545	return;	2973	return;
2546		2974
		2975	EV_FREQUENT_CHECK;
		2976
2547	{	2977	{
2548	int active = ev_active (w);	2978	int active = ev_active (w);
2549		2979
2550	checks [active - 1] = checks [--checkcnt];	2980	checks [active - 1] = checks [--checkcnt];
2551	ev_active (checks [active - 1]) = active;	2981	ev_active (checks [active - 1]) = active;
2552	}	2982	}
2553		2983
2554	ev_stop (EV_A_ (W)w);	2984	ev_stop (EV_A_ (W)w);
		2985
		2986	EV_FREQUENT_CHECK;
2555	}	2987	}
2556		2988
2557	#if EV_EMBED_ENABLE	2989	#if EV_EMBED_ENABLE
2558	void noinline	2990	void noinline
2559	ev_embed_sweep (EV_P_ ev_embed *w)	2991	ev_embed_sweep (EV_P_ ev_embed *w)
…		…
2586	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3018	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2587	}	3019	}
2588	}	3020	}
2589	}	3021	}
2590		3022
		3023	static void
		3024	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3025	{
		3026	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3027
		3028	ev_embed_stop (EV_A_ w);
		3029
		3030	{
		3031	struct ev_loop *loop = w->other;
		3032
		3033	ev_loop_fork (EV_A);
		3034	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3035	}
		3036
		3037	ev_embed_start (EV_A_ w);
		3038	}
		3039
2591	#if 0	3040	#if 0
2592	static void	3041	static void
2593	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3042	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2594	{	3043	{
2595	ev_idle_stop (EV_A_ idle);	3044	ev_idle_stop (EV_A_ idle);
…		…
2602	if (expect_false (ev_is_active (w)))	3051	if (expect_false (ev_is_active (w)))
2603	return;	3052	return;
2604		3053
2605	{	3054	{
2606	struct ev_loop *loop = w->other;	3055	struct ev_loop *loop = w->other;
2607	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3056	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2608	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3057	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2609	}	3058	}
		3059
		3060	EV_FREQUENT_CHECK;
2610		3061
2611	ev_set_priority (&w->io, ev_priority (w));	3062	ev_set_priority (&w->io, ev_priority (w));
2612	ev_io_start (EV_A_ &w->io);	3063	ev_io_start (EV_A_ &w->io);
2613		3064
2614	ev_prepare_init (&w->prepare, embed_prepare_cb);	3065	ev_prepare_init (&w->prepare, embed_prepare_cb);
2615	ev_set_priority (&w->prepare, EV_MINPRI);	3066	ev_set_priority (&w->prepare, EV_MINPRI);
2616	ev_prepare_start (EV_A_ &w->prepare);	3067	ev_prepare_start (EV_A_ &w->prepare);
2617		3068
		3069	ev_fork_init (&w->fork, embed_fork_cb);
		3070	ev_fork_start (EV_A_ &w->fork);
		3071
2618	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3072	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2619		3073
2620	ev_start (EV_A_ (W)w, 1);	3074	ev_start (EV_A_ (W)w, 1);
		3075
		3076	EV_FREQUENT_CHECK;
2621	}	3077	}
2622		3078
2623	void	3079	void
2624	ev_embed_stop (EV_P_ ev_embed *w)	3080	ev_embed_stop (EV_P_ ev_embed *w)
2625	{	3081	{
2626	clear_pending (EV_A_ (W)w);	3082	clear_pending (EV_A_ (W)w);
2627	if (expect_false (!ev_is_active (w)))	3083	if (expect_false (!ev_is_active (w)))
2628	return;	3084	return;
2629		3085
		3086	EV_FREQUENT_CHECK;
		3087
2630	ev_io_stop (EV_A_ &w->io);	3088	ev_io_stop (EV_A_ &w->io);
2631	ev_prepare_stop (EV_A_ &w->prepare);	3089	ev_prepare_stop (EV_A_ &w->prepare);
		3090	ev_fork_stop (EV_A_ &w->fork);
2632		3091
2633	ev_stop (EV_A_ (W)w);	3092	EV_FREQUENT_CHECK;
2634	}	3093	}
2635	#endif	3094	#endif
2636		3095
2637	#if EV_FORK_ENABLE	3096	#if EV_FORK_ENABLE
2638	void	3097	void
2639	ev_fork_start (EV_P_ ev_fork *w)	3098	ev_fork_start (EV_P_ ev_fork *w)
2640	{	3099	{
2641	if (expect_false (ev_is_active (w)))	3100	if (expect_false (ev_is_active (w)))
2642	return;	3101	return;
		3102
		3103	EV_FREQUENT_CHECK;
2643		3104
2644	ev_start (EV_A_ (W)w, ++forkcnt);	3105	ev_start (EV_A_ (W)w, ++forkcnt);
2645	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3106	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2646	forks [forkcnt - 1] = w;	3107	forks [forkcnt - 1] = w;
		3108
		3109	EV_FREQUENT_CHECK;
2647	}	3110	}
2648		3111
2649	void	3112	void
2650	ev_fork_stop (EV_P_ ev_fork *w)	3113	ev_fork_stop (EV_P_ ev_fork *w)
2651	{	3114	{
2652	clear_pending (EV_A_ (W)w);	3115	clear_pending (EV_A_ (W)w);
2653	if (expect_false (!ev_is_active (w)))	3116	if (expect_false (!ev_is_active (w)))
2654	return;	3117	return;
2655		3118
		3119	EV_FREQUENT_CHECK;
		3120
2656	{	3121	{
2657	int active = ev_active (w);	3122	int active = ev_active (w);
2658		3123
2659	forks [active - 1] = forks [--forkcnt];	3124	forks [active - 1] = forks [--forkcnt];
2660	ev_active (forks [active - 1]) = active;	3125	ev_active (forks [active - 1]) = active;
2661	}	3126	}
2662		3127
2663	ev_stop (EV_A_ (W)w);	3128	ev_stop (EV_A_ (W)w);
		3129
		3130	EV_FREQUENT_CHECK;
2664	}	3131	}
2665	#endif	3132	#endif
2666		3133
2667	#if EV_ASYNC_ENABLE	3134	#if EV_ASYNC_ENABLE
2668	void	3135	void
…		…
2670	{	3137	{
2671	if (expect_false (ev_is_active (w)))	3138	if (expect_false (ev_is_active (w)))
2672	return;	3139	return;
2673		3140
2674	evpipe_init (EV_A);	3141	evpipe_init (EV_A);
		3142
		3143	EV_FREQUENT_CHECK;
2675		3144
2676	ev_start (EV_A_ (W)w, ++asynccnt);	3145	ev_start (EV_A_ (W)w, ++asynccnt);
2677	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);	3146	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2678	asyncs [asynccnt - 1] = w;	3147	asyncs [asynccnt - 1] = w;
		3148
		3149	EV_FREQUENT_CHECK;
2679	}	3150	}
2680		3151
2681	void	3152	void
2682	ev_async_stop (EV_P_ ev_async *w)	3153	ev_async_stop (EV_P_ ev_async *w)
2683	{	3154	{
2684	clear_pending (EV_A_ (W)w);	3155	clear_pending (EV_A_ (W)w);
2685	if (expect_false (!ev_is_active (w)))	3156	if (expect_false (!ev_is_active (w)))
2686	return;	3157	return;
2687		3158
		3159	EV_FREQUENT_CHECK;
		3160
2688	{	3161	{
2689	int active = ev_active (w);	3162	int active = ev_active (w);
2690		3163
2691	asyncs [active - 1] = asyncs [--asynccnt];	3164	asyncs [active - 1] = asyncs [--asynccnt];
2692	ev_active (asyncs [active - 1]) = active;	3165	ev_active (asyncs [active - 1]) = active;
2693	}	3166	}
2694		3167
2695	ev_stop (EV_A_ (W)w);	3168	ev_stop (EV_A_ (W)w);
		3169
		3170	EV_FREQUENT_CHECK;
2696	}	3171	}
2697		3172
2698	void	3173	void
2699	ev_async_send (EV_P_ ev_async *w)	3174	ev_async_send (EV_P_ ev_async *w)
2700	{	3175	{
…		…
2717	once_cb (EV_P_ struct ev_once *once, int revents)	3192	once_cb (EV_P_ struct ev_once *once, int revents)
2718	{	3193	{
2719	void (*cb)(int revents, void *arg) = once->cb;	3194	void (*cb)(int revents, void *arg) = once->cb;
2720	void *arg = once->arg;	3195	void *arg = once->arg;
2721		3196
2722	ev_io_stop (EV_A_ &once->io);	3197	ev_io_stop (EV_A_ &once->io);
2723	ev_timer_stop (EV_A_ &once->to);	3198	ev_timer_stop (EV_A_ &once->to);
2724	ev_free (once);	3199	ev_free (once);
2725		3200
2726	cb (revents, arg);	3201	cb (revents, arg);
2727	}	3202	}
2728		3203
2729	static void	3204	static void
2730	once_cb_io (EV_P_ ev_io *w, int revents)	3205	once_cb_io (EV_P_ ev_io *w, int revents)
2731	{	3206	{
2732	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3207	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3208
		3209	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2733	}	3210	}
2734		3211
2735	static void	3212	static void
2736	once_cb_to (EV_P_ ev_timer *w, int revents)	3213	once_cb_to (EV_P_ ev_timer *w, int revents)
2737	{	3214	{
2738	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3215	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3216
		3217	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2739	}	3218	}
2740		3219
2741	void	3220	void
2742	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3221	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2743	{	3222	{
…		…
2765	ev_timer_set (&once->to, timeout, 0.);	3244	ev_timer_set (&once->to, timeout, 0.);
2766	ev_timer_start (EV_A_ &once->to);	3245	ev_timer_start (EV_A_ &once->to);
2767	}	3246	}
2768	}	3247	}
2769		3248
		3249	/*****************************************************************************/
		3250
		3251	#if EV_WALK_ENABLE
		3252	void
		3253	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3254	{
		3255	int i, j;
		3256	ev_watcher_list *wl, *wn;
		3257
		3258	if (types & (EV_IO | EV_EMBED))
		3259	for (i = 0; i < anfdmax; ++i)
		3260	for (wl = anfds [i].head; wl; )
		3261	{
		3262	wn = wl->next;
		3263
		3264	#if EV_EMBED_ENABLE
		3265	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3266	{
		3267	if (types & EV_EMBED)
		3268	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3269	}
		3270	else
		3271	#endif
		3272	#if EV_USE_INOTIFY
		3273	if (ev_cb ((ev_io *)wl) == infy_cb)
		3274	;
		3275	else
		3276	#endif
		3277	if ((ev_io *)wl != &pipe_w)
		3278	if (types & EV_IO)
		3279	cb (EV_A_ EV_IO, wl);
		3280
		3281	wl = wn;
		3282	}
		3283
		3284	if (types & (EV_TIMER | EV_STAT))
		3285	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3286	#if EV_STAT_ENABLE
		3287	/*TODO: timer is not always active*/
		3288	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3289	{
		3290	if (types & EV_STAT)
		3291	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3292	}
		3293	else
		3294	#endif
		3295	if (types & EV_TIMER)
		3296	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3297
		3298	#if EV_PERIODIC_ENABLE
		3299	if (types & EV_PERIODIC)
		3300	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3301	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3302	#endif
		3303
		3304	#if EV_IDLE_ENABLE
		3305	if (types & EV_IDLE)
		3306	for (j = NUMPRI; i--; )
		3307	for (i = idlecnt [j]; i--; )
		3308	cb (EV_A_ EV_IDLE, idles [j][i]);
		3309	#endif
		3310
		3311	#if EV_FORK_ENABLE
		3312	if (types & EV_FORK)
		3313	for (i = forkcnt; i--; )
		3314	if (ev_cb (forks [i]) != embed_fork_cb)
		3315	cb (EV_A_ EV_FORK, forks [i]);
		3316	#endif
		3317
		3318	#if EV_ASYNC_ENABLE
		3319	if (types & EV_ASYNC)
		3320	for (i = asynccnt; i--; )
		3321	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3322	#endif
		3323
		3324	if (types & EV_PREPARE)
		3325	for (i = preparecnt; i--; )
		3326	#if EV_EMBED_ENABLE
		3327	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3328	#endif
		3329	cb (EV_A_ EV_PREPARE, prepares [i]);
		3330
		3331	if (types & EV_CHECK)
		3332	for (i = checkcnt; i--; )
		3333	cb (EV_A_ EV_CHECK, checks [i]);
		3334
		3335	if (types & EV_SIGNAL)
		3336	for (i = 0; i < signalmax; ++i)
		3337	for (wl = signals [i].head; wl; )
		3338	{
		3339	wn = wl->next;
		3340	cb (EV_A_ EV_SIGNAL, wl);
		3341	wl = wn;
		3342	}
		3343
		3344	if (types & EV_CHILD)
		3345	for (i = EV_PID_HASHSIZE; i--; )
		3346	for (wl = childs [i]; wl; )
		3347	{
		3348	wn = wl->next;
		3349	cb (EV_A_ EV_CHILD, wl);
		3350	wl = wn;
		3351	}
		3352	/* EV_STAT 0x00001000 /* stat data changed */
		3353	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3354	}
		3355	#endif
		3356
2770	#if EV_MULTIPLICITY	3357	#if EV_MULTIPLICITY
2771	#include "ev_wrap.h"	3358	#include "ev_wrap.h"
2772	#endif	3359	#endif
2773		3360
2774	#ifdef __cplusplus	3361	#ifdef __cplusplus

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