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Comparing libev/ev.c (file contents):
Revision 1.238 by root, Thu May 8 20:49:12 2008 UTC vs.
Revision 1.292 by root, Mon Jun 29 07:22:56 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
		514	/* hash table entry per inotify-id */
427	typedef struct	515	typedef struct
428	{	516	{
429	WL head;	517	WL head;
430	} ANFS;	518	} ANFS;
		519	#endif
		520
		521	/* Heap Entry */
		522	#if EV_HEAP_CACHE_AT
		523	/* a heap element */
		524	typedef struct {
		525	ev_tstamp at;
		526	WT w;
		527	} ANHE;
		528
		529	#define ANHE_w(he) (he).w /* access watcher, read-write */
		530	#define ANHE_at(he) (he).at /* access cached at, read-only */
		531	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
		532	#else
		533	/* a heap element */
		534	typedef WT ANHE;
		535
		536	#define ANHE_w(he) (he)
		537	#define ANHE_at(he) (he)->at
		538	#define ANHE_at_cache(he)
431	#endif	539	#endif
432		540
433	#if EV_MULTIPLICITY	541	#if EV_MULTIPLICITY
434		542
435	struct ev_loop	543	struct ev_loop
…		…
456		564
457	#endif	565	#endif
458		566
459	/*****************************************************************************/	567	/*****************************************************************************/
460		568
		569	#ifndef EV_HAVE_EV_TIME
461	ev_tstamp	570	ev_tstamp
462	ev_time (void)	571	ev_time (void)
463	{	572	{
464	#if EV_USE_REALTIME	573	#if EV_USE_REALTIME
		574	if (expect_true (have_realtime))
		575	{
465	struct timespec ts;	576	struct timespec ts;
466	clock_gettime (CLOCK_REALTIME, &ts);	577	clock_gettime (CLOCK_REALTIME, &ts);
467	return ts.tv_sec + ts.tv_nsec * 1e-9;	578	return ts.tv_sec + ts.tv_nsec * 1e-9;
468	#else	579	}
		580	#endif
		581
469	struct timeval tv;	582	struct timeval tv;
470	gettimeofday (&tv, 0);	583	gettimeofday (&tv, 0);
471	return tv.tv_sec + tv.tv_usec * 1e-6;	584	return tv.tv_sec + tv.tv_usec * 1e-6;
472	#endif
473	}	585	}
		586	#endif
474		587
475	ev_tstamp inline_size	588	inline_size ev_tstamp
476	get_clock (void)	589	get_clock (void)
477	{	590	{
478	#if EV_USE_MONOTONIC	591	#if EV_USE_MONOTONIC
479	if (expect_true (have_monotonic))	592	if (expect_true (have_monotonic))
480	{	593	{
…		…
513	struct timeval tv;	626	struct timeval tv;
514		627
515	tv.tv_sec = (time_t)delay;	628	tv.tv_sec = (time_t)delay;
516	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	629	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
517		630
		631	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		632	/* somehting nto guaranteed by newer posix versions, but guaranteed */
		633	/* by older ones */
518	select (0, 0, 0, 0, &tv);	634	select (0, 0, 0, 0, &tv);
519	#endif	635	#endif
520	}	636	}
521	}	637	}
522		638
523	/*****************************************************************************/	639	/*****************************************************************************/
524		640
525	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	641	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
526		642
527	int inline_size	643	/* find a suitable new size for the given array, */
		644	/* hopefully by rounding to a ncie-to-malloc size */
		645	inline_size int
528	array_nextsize (int elem, int cur, int cnt)	646	array_nextsize (int elem, int cur, int cnt)
529	{	647	{
530	int ncur = cur + 1;	648	int ncur = cur + 1;
531		649
532	do	650	do
…		…
549	array_realloc (int elem, void *base, int *cur, int cnt)	667	array_realloc (int elem, void *base, int *cur, int cnt)
550	{	668	{
551	*cur = array_nextsize (elem, *cur, cnt);	669	*cur = array_nextsize (elem, *cur, cnt);
552	return ev_realloc (base, elem * *cur);	670	return ev_realloc (base, elem * *cur);
553	}	671	}
		672
		673	#define array_init_zero(base,count) \
		674	memset ((void *)(base), 0, sizeof (*(base)) * (count))
554		675
555	#define array_needsize(type,base,cur,cnt,init) \	676	#define array_needsize(type,base,cur,cnt,init) \
556	if (expect_false ((cnt) > (cur))) \	677	if (expect_false ((cnt) > (cur))) \
557	{ \	678	{ \
558	int ocur_ = (cur); \	679	int ocur_ = (cur); \
…		…
570	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	691	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
571	}	692	}
572	#endif	693	#endif
573		694
574	#define array_free(stem, idx) \	695	#define array_free(stem, idx) \
575	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	696	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
576		697
577	/*****************************************************************************/	698	/*****************************************************************************/
		699
		700	/* dummy callback for pending events */
		701	static void noinline
		702	pendingcb (EV_P_ ev_prepare *w, int revents)
		703	{
		704	}
578		705
579	void noinline	706	void noinline
580	ev_feed_event (EV_P_ void *w, int revents)	707	ev_feed_event (EV_P_ void *w, int revents)
581	{	708	{
582	W w_ = (W)w;	709	W w_ = (W)w;
…		…
591	pendings [pri][w_->pending - 1].w = w_;	718	pendings [pri][w_->pending - 1].w = w_;
592	pendings [pri][w_->pending - 1].events = revents;	719	pendings [pri][w_->pending - 1].events = revents;
593	}	720	}
594	}	721	}
595		722
596	void inline_speed	723	inline_speed void
		724	feed_reverse (EV_P_ W w)
		725	{
		726	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		727	rfeeds [rfeedcnt++] = w;
		728	}
		729
		730	inline_size void
		731	feed_reverse_done (EV_P_ int revents)
		732	{
		733	do
		734	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		735	while (rfeedcnt);
		736	}
		737
		738	inline_speed void
597	queue_events (EV_P_ W *events, int eventcnt, int type)	739	queue_events (EV_P_ W *events, int eventcnt, int type)
598	{	740	{
599	int i;	741	int i;
600		742
601	for (i = 0; i < eventcnt; ++i)	743	for (i = 0; i < eventcnt; ++i)
602	ev_feed_event (EV_A_ events [i], type);	744	ev_feed_event (EV_A_ events [i], type);
603	}	745	}
604		746
605	/*****************************************************************************/	747	/*****************************************************************************/
606		748
607	void inline_size	749	inline_speed void
608	anfds_init (ANFD *base, int count)
609	{
610	while (count--)
611	{
612	base->head = 0;
613	base->events = EV_NONE;
614	base->reify = 0;
615
616	++base;
617	}
618	}
619
620	void inline_speed
621	fd_event (EV_P_ int fd, int revents)	750	fd_event (EV_P_ int fd, int revents)
622	{	751	{
623	ANFD *anfd = anfds + fd;	752	ANFD *anfd = anfds + fd;
624	ev_io *w;	753	ev_io *w;
625		754
…		…
637	{	766	{
638	if (fd >= 0 && fd < anfdmax)	767	if (fd >= 0 && fd < anfdmax)
639	fd_event (EV_A_ fd, revents);	768	fd_event (EV_A_ fd, revents);
640	}	769	}
641		770
642	void inline_size	771	/* make sure the external fd watch events are in-sync */
		772	/* with the kernel/libev internal state */
		773	inline_size void
643	fd_reify (EV_P)	774	fd_reify (EV_P)
644	{	775	{
645	int i;	776	int i;
646		777
647	for (i = 0; i < fdchangecnt; ++i)	778	for (i = 0; i < fdchangecnt; ++i)
…		…
656	events |= (unsigned char)w->events;	787	events |= (unsigned char)w->events;
657		788
658	#if EV_SELECT_IS_WINSOCKET	789	#if EV_SELECT_IS_WINSOCKET
659	if (events)	790	if (events)
660	{	791	{
661	unsigned long argp;	792	unsigned long arg;
662	#ifdef EV_FD_TO_WIN32_HANDLE	793	#ifdef EV_FD_TO_WIN32_HANDLE
663	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	794	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
664	#else	795	#else
665	anfd->handle = _get_osfhandle (fd);	796	anfd->handle = _get_osfhandle (fd);
666	#endif	797	#endif
667	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	798	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
668	}	799	}
669	#endif	800	#endif
670		801
671	{	802	{
672	unsigned char o_events = anfd->events;	803	unsigned char o_events = anfd->events;
673	unsigned char o_reify = anfd->reify;	804	unsigned char o_reify = anfd->reify;
674		805
675	anfd->reify = 0;	806	anfd->reify = 0;
676	anfd->events = events;	807	anfd->events = events;
677		808
678	if (o_events != events || o_reify & EV_IOFDSET)	809	if (o_events != events || o_reify & EV__IOFDSET)
679	backend_modify (EV_A_ fd, o_events, events);	810	backend_modify (EV_A_ fd, o_events, events);
680	}	811	}
681	}	812	}
682		813
683	fdchangecnt = 0;	814	fdchangecnt = 0;
684	}	815	}
685		816
686	void inline_size	817	/* something about the given fd changed */
		818	inline_size void
687	fd_change (EV_P_ int fd, int flags)	819	fd_change (EV_P_ int fd, int flags)
688	{	820	{
689	unsigned char reify = anfds [fd].reify;	821	unsigned char reify = anfds [fd].reify;
690	anfds [fd].reify |= flags;	822	anfds [fd].reify |= flags;
691		823
…		…
695	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	827	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
696	fdchanges [fdchangecnt - 1] = fd;	828	fdchanges [fdchangecnt - 1] = fd;
697	}	829	}
698	}	830	}
699		831
700	void inline_speed	832	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		833	inline_speed void
701	fd_kill (EV_P_ int fd)	834	fd_kill (EV_P_ int fd)
702	{	835	{
703	ev_io *w;	836	ev_io *w;
704		837
705	while ((w = (ev_io *)anfds [fd].head))	838	while ((w = (ev_io *)anfds [fd].head))
…		…
707	ev_io_stop (EV_A_ w);	840	ev_io_stop (EV_A_ w);
708	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	841	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
709	}	842	}
710	}	843	}
711		844
712	int inline_size	845	/* check whether the given fd is atcually valid, for error recovery */
		846	inline_size int
713	fd_valid (int fd)	847	fd_valid (int fd)
714	{	848	{
715	#ifdef _WIN32	849	#ifdef _WIN32
716	return _get_osfhandle (fd) != -1;	850	return _get_osfhandle (fd) != -1;
717	#else	851	#else
…		…
725	{	859	{
726	int fd;	860	int fd;
727		861
728	for (fd = 0; fd < anfdmax; ++fd)	862	for (fd = 0; fd < anfdmax; ++fd)
729	if (anfds [fd].events)	863	if (anfds [fd].events)
730	if (!fd_valid (fd) == -1 && errno == EBADF)	864	if (!fd_valid (fd) && errno == EBADF)
731	fd_kill (EV_A_ fd);	865	fd_kill (EV_A_ fd);
732	}	866	}
733		867
734	/* called on ENOMEM in select/poll to kill some fds and retry */	868	/* called on ENOMEM in select/poll to kill some fds and retry */
735	static void noinline	869	static void noinline
…		…
753		887
754	for (fd = 0; fd < anfdmax; ++fd)	888	for (fd = 0; fd < anfdmax; ++fd)
755	if (anfds [fd].events)	889	if (anfds [fd].events)
756	{	890	{
757	anfds [fd].events = 0;	891	anfds [fd].events = 0;
		892	anfds [fd].emask = 0;
758	fd_change (EV_A_ fd, EV_IOFDSET | 1);	893	fd_change (EV_A_ fd, EV__IOFDSET | 1);
759	}	894	}
760	}	895	}
761		896
762	/*****************************************************************************/	897	/*****************************************************************************/
		898
		899	/*
		900	* the heap functions want a real array index. array index 0 uis guaranteed to not
		901	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
		902	* the branching factor of the d-tree.
		903	*/
763		904
764	/*	905	/*
765	* at the moment we allow libev the luxury of two heaps,	906	* at the moment we allow libev the luxury of two heaps,
766	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap	907	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
767	* which is more cache-efficient.	908	* which is more cache-efficient.
768	* the difference is about 5% with 50000+ watchers.	909	* the difference is about 5% with 50000+ watchers.
769	*/	910	*/
770	#define USE_4HEAP !EV_MINIMAL
771	#define USE_4HEAP 1/* they do not work corretcly */
772	#if USE_4HEAP	911	#if EV_USE_4HEAP
773		912
774	#define DHEAP 4	913	#define DHEAP 4
775	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	914	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		915	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
		916	#define UPHEAP_DONE(p,k) ((p) == (k))
776		917
777	/* towards the root */	918	/* away from the root */
778	void inline_speed	919	inline_speed void
779	upheap (WT *heap, int k)	920	downheap (ANHE *heap, int N, int k)
780	{	921	{
781	WT w = heap [k];	922	ANHE he = heap [k];
		923	ANHE *E = heap + N + HEAP0;
782		924
783	for (;;)	925	for (;;)
784	{	926	{
785	int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
786
787	if (p == k || heap [p]->at <= w->at)
788	break;
789
790	heap [k] = heap [p];
791	ev_active (heap [k]) = k;
792	k = p;
793	}
794
795	heap [k] = w;
796	ev_active (heap [k]) = k;
797	}
798
799	/* away from the root */
800	void inline_speed
801	downheap (WT *heap, int N, int k)
802	{
803	WT w = heap [k];
804	WT *E = heap + N + HEAP0;
805
806	for (;;)
807	{
808	ev_tstamp minat;	927	ev_tstamp minat;
809	WT *minpos;	928	ANHE *minpos;
810	WT *pos = heap + DHEAP * (k - HEAP0) + HEAP0;	929	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
811		930
812	// find minimum child	931	/* find minimum child */
813	if (expect_true (pos + DHEAP - 1 < E))	932	if (expect_true (pos + DHEAP - 1 < E))
814	{	933	{
815	/* fast path */
816	(minpos = pos + 0), (minat = (*minpos)->at);	934	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
817	if (pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at);	935	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
818	if (pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at);	936	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
819	if (pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at);	937	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		938	}
		939	else if (pos < E)
		940	{
		941	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		942	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		943	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		944	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
820	}	945	}
821	else	946	else
822	{
823	/* slow path */
824	if (pos >= E)
825	break;
826	(minpos = pos + 0), (minat = (*minpos)->at);
827	if (pos + 1 < E && pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at);
828	if (pos + 2 < E && pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at);
829	if (pos + 3 < E && pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at);
830	}
831
832	if (w->at <= minat)
833	break;	947	break;
834		948
835	ev_active (*minpos) = k;	949	if (ANHE_at (he) <= minat)
		950	break;
		951
836	heap [k] = *minpos;	952	heap [k] = *minpos;
		953	ev_active (ANHE_w (*minpos)) = k;
837		954
838	k = minpos - heap;	955	k = minpos - heap;
839	}	956	}
840		957
841	heap [k] = w;	958	heap [k] = he;
842	ev_active (heap [k]) = k;	959	ev_active (ANHE_w (he)) = k;
843	}	960	}
844		961
845	#else // 4HEAP	962	#else /* 4HEAP */
846		963
847	#define HEAP0 1	964	#define HEAP0 1
		965	#define HPARENT(k) ((k) >> 1)
		966	#define UPHEAP_DONE(p,k) (!(p))
848		967
849	/* towards the root */	968	/* away from the root */
850	void inline_speed	969	inline_speed void
851	upheap (WT *heap, int k)	970	downheap (ANHE *heap, int N, int k)
852	{	971	{
853	WT w = heap [k];	972	ANHE he = heap [k];
854		973
855	for (;;)	974	for (;;)
856	{	975	{
857	int p = k >> 1;	976	int c = k << 1;
858		977
859	/* maybe we could use a dummy element at heap [0]? */	978	if (c > N + HEAP0 - 1)
860	if (!p || heap [p]->at <= w->at)
861	break;	979	break;
862		980
863	heap [k] = heap [p];	981	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
864	ev_active (heap [k]) = k;	982	? 1 : 0;
865	k = p;
866	}
867		983
868	heap [k] = w;	984	if (ANHE_at (he) <= ANHE_at (heap [c]))
869	ev_active (heap [k]) = k;
870	}
871
872	/* away from the root */
873	void inline_speed
874	downheap (WT *heap, int N, int k)
875	{
876	WT w = heap [k];
877
878	for (;;)
879	{
880	int c = k << 1;
881
882	if (c > N)
883	break;	985	break;
884		986
885	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
886	? 1 : 0;
887
888	if (w->at <= heap [c]->at)
889	break;
890
891	heap [k] = heap [c];	987	heap [k] = heap [c];
892	((W)heap [k])->active = k;	988	ev_active (ANHE_w (heap [k])) = k;
893		989
894	k = c;	990	k = c;
895	}	991	}
896		992
897	heap [k] = w;	993	heap [k] = he;
		994	ev_active (ANHE_w (he)) = k;
		995	}
		996	#endif
		997
		998	/* towards the root */
		999	inline_speed void
		1000	upheap (ANHE *heap, int k)
		1001	{
		1002	ANHE he = heap [k];
		1003
		1004	for (;;)
		1005	{
		1006	int p = HPARENT (k);
		1007
		1008	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		1009	break;
		1010
		1011	heap [k] = heap [p];
898	ev_active (heap [k]) = k;	1012	ev_active (ANHE_w (heap [k])) = k;
899	}	1013	k = p;
900	#endif	1014	}
901		1015
902	void inline_size	1016	heap [k] = he;
		1017	ev_active (ANHE_w (he)) = k;
		1018	}
		1019
		1020	/* move an element suitably so it is in a correct place */
		1021	inline_size void
903	adjustheap (WT *heap, int N, int k)	1022	adjustheap (ANHE *heap, int N, int k)
904	{	1023	{
		1024	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
905	upheap (heap, k);	1025	upheap (heap, k);
		1026	else
906	downheap (heap, N, k);	1027	downheap (heap, N, k);
		1028	}
		1029
		1030	/* rebuild the heap: this function is used only once and executed rarely */
		1031	inline_size void
		1032	reheap (ANHE *heap, int N)
		1033	{
		1034	int i;
		1035
		1036	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		1037	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		1038	for (i = 0; i < N; ++i)
		1039	upheap (heap, i + HEAP0);
907	}	1040	}
908		1041
909	/*****************************************************************************/	1042	/*****************************************************************************/
910		1043
		1044	/* associate signal watchers to a signal signal */
911	typedef struct	1045	typedef struct
912	{	1046	{
913	WL head;	1047	WL head;
914	EV_ATOMIC_T gotsig;	1048	EV_ATOMIC_T gotsig;
915	} ANSIG;	1049	} ANSIG;
…		…
917	static ANSIG *signals;	1051	static ANSIG *signals;
918	static int signalmax;	1052	static int signalmax;
919		1053
920	static EV_ATOMIC_T gotsig;	1054	static EV_ATOMIC_T gotsig;
921		1055
922	void inline_size
923	signals_init (ANSIG *base, int count)
924	{
925	while (count--)
926	{
927	base->head = 0;
928	base->gotsig = 0;
929
930	++base;
931	}
932	}
933
934	/*****************************************************************************/	1056	/*****************************************************************************/
935		1057
936	void inline_speed	1058	/* used to prepare libev internal fd's */
		1059	/* this is not fork-safe */
		1060	inline_speed void
937	fd_intern (int fd)	1061	fd_intern (int fd)
938	{	1062	{
939	#ifdef _WIN32	1063	#ifdef _WIN32
940	int arg = 1;	1064	unsigned long arg = 1;
941	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1065	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
942	#else	1066	#else
943	fcntl (fd, F_SETFD, FD_CLOEXEC);	1067	fcntl (fd, F_SETFD, FD_CLOEXEC);
944	fcntl (fd, F_SETFL, O_NONBLOCK);	1068	fcntl (fd, F_SETFL, O_NONBLOCK);
945	#endif	1069	#endif
946	}	1070	}
947		1071
948	static void noinline	1072	static void noinline
949	evpipe_init (EV_P)	1073	evpipe_init (EV_P)
950	{	1074	{
951	if (!ev_is_active (&pipeev))	1075	if (!ev_is_active (&pipe_w))
952	{	1076	{
953	#if EV_USE_EVENTFD	1077	#if EV_USE_EVENTFD
954	if ((evfd = eventfd (0, 0)) >= 0)	1078	if ((evfd = eventfd (0, 0)) >= 0)
955	{	1079	{
956	evpipe [0] = -1;	1080	evpipe [0] = -1;
957	fd_intern (evfd);	1081	fd_intern (evfd);
958	ev_io_set (&pipeev, evfd, EV_READ);	1082	ev_io_set (&pipe_w, evfd, EV_READ);
959	}	1083	}
960	else	1084	else
961	#endif	1085	#endif
962	{	1086	{
963	while (pipe (evpipe))	1087	while (pipe (evpipe))
964	syserr ("(libev) error creating signal/async pipe");	1088	ev_syserr ("(libev) error creating signal/async pipe");
965		1089
966	fd_intern (evpipe [0]);	1090	fd_intern (evpipe [0]);
967	fd_intern (evpipe [1]);	1091	fd_intern (evpipe [1]);
968	ev_io_set (&pipeev, evpipe [0], EV_READ);	1092	ev_io_set (&pipe_w, evpipe [0], EV_READ);
969	}	1093	}
970		1094
971	ev_io_start (EV_A_ &pipeev);	1095	ev_io_start (EV_A_ &pipe_w);
972	ev_unref (EV_A); /* watcher should not keep loop alive */	1096	ev_unref (EV_A); /* watcher should not keep loop alive */
973	}	1097	}
974	}	1098	}
975		1099
976	void inline_size	1100	inline_size void
977	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1101	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
978	{	1102	{
979	if (!*flag)	1103	if (!*flag)
980	{	1104	{
981	int old_errno = errno; /* save errno because write might clobber it */	1105	int old_errno = errno; /* save errno because write might clobber it */
…		…
994		1118
995	errno = old_errno;	1119	errno = old_errno;
996	}	1120	}
997	}	1121	}
998		1122
		1123	/* called whenever the libev signal pipe */
		1124	/* got some events (signal, async) */
999	static void	1125	static void
1000	pipecb (EV_P_ ev_io *iow, int revents)	1126	pipecb (EV_P_ ev_io *iow, int revents)
1001	{	1127	{
1002	#if EV_USE_EVENTFD	1128	#if EV_USE_EVENTFD
1003	if (evfd >= 0)	1129	if (evfd >= 0)
…		…
1059	ev_feed_signal_event (EV_P_ int signum)	1185	ev_feed_signal_event (EV_P_ int signum)
1060	{	1186	{
1061	WL w;	1187	WL w;
1062		1188
1063	#if EV_MULTIPLICITY	1189	#if EV_MULTIPLICITY
1064	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1190	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1065	#endif	1191	#endif
1066		1192
1067	--signum;	1193	--signum;
1068		1194
1069	if (signum < 0 || signum >= signalmax)	1195	if (signum < 0 || signum >= signalmax)
…		…
1085		1211
1086	#ifndef WIFCONTINUED	1212	#ifndef WIFCONTINUED
1087	# define WIFCONTINUED(status) 0	1213	# define WIFCONTINUED(status) 0
1088	#endif	1214	#endif
1089		1215
1090	void inline_speed	1216	/* handle a single child status event */
		1217	inline_speed void
1091	child_reap (EV_P_ int chain, int pid, int status)	1218	child_reap (EV_P_ int chain, int pid, int status)
1092	{	1219	{
1093	ev_child *w;	1220	ev_child *w;
1094	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1221	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1095		1222
…		…
1108		1235
1109	#ifndef WCONTINUED	1236	#ifndef WCONTINUED
1110	# define WCONTINUED 0	1237	# define WCONTINUED 0
1111	#endif	1238	#endif
1112		1239
		1240	/* called on sigchld etc., calls waitpid */
1113	static void	1241	static void
1114	childcb (EV_P_ ev_signal *sw, int revents)	1242	childcb (EV_P_ ev_signal *sw, int revents)
1115	{	1243	{
1116	int pid, status;	1244	int pid, status;
1117		1245
…		…
1198	/* kqueue is borked on everything but netbsd apparently */	1326	/* kqueue is borked on everything but netbsd apparently */
1199	/* it usually doesn't work correctly on anything but sockets and pipes */	1327	/* it usually doesn't work correctly on anything but sockets and pipes */
1200	flags &= ~EVBACKEND_KQUEUE;	1328	flags &= ~EVBACKEND_KQUEUE;
1201	#endif	1329	#endif
1202	#ifdef __APPLE__	1330	#ifdef __APPLE__
1203	// flags &= ~EVBACKEND_KQUEUE; for documentation	1331	/* only select works correctly on that "unix-certified" platform */
1204	flags &= ~EVBACKEND_POLL;	1332	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1333	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1205	#endif	1334	#endif
1206		1335
1207	return flags;	1336	return flags;
1208	}	1337	}
1209		1338
…		…
1241	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1370	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1242	{	1371	{
1243	timeout_blocktime = interval;	1372	timeout_blocktime = interval;
1244	}	1373	}
1245		1374
		1375	/* initialise a loop structure, must be zero-initialised */
1246	static void noinline	1376	static void noinline
1247	loop_init (EV_P_ unsigned int flags)	1377	loop_init (EV_P_ unsigned int flags)
1248	{	1378	{
1249	if (!backend)	1379	if (!backend)
1250	{	1380	{
		1381	#if EV_USE_REALTIME
		1382	if (!have_realtime)
		1383	{
		1384	struct timespec ts;
		1385
		1386	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1387	have_realtime = 1;
		1388	}
		1389	#endif
		1390
1251	#if EV_USE_MONOTONIC	1391	#if EV_USE_MONOTONIC
		1392	if (!have_monotonic)
1252	{	1393	{
1253	struct timespec ts;	1394	struct timespec ts;
		1395
1254	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1396	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1255	have_monotonic = 1;	1397	have_monotonic = 1;
1256	}	1398	}
1257	#endif	1399	#endif
1258		1400
1259	ev_rt_now = ev_time ();	1401	ev_rt_now = ev_time ();
1260	mn_now = get_clock ();	1402	mn_now = get_clock ();
1261	now_floor = mn_now;	1403	now_floor = mn_now;
…		…
1298	#endif	1440	#endif
1299	#if EV_USE_SELECT	1441	#if EV_USE_SELECT
1300	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1442	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1301	#endif	1443	#endif
1302		1444
		1445	ev_prepare_init (&pending_w, pendingcb);
		1446
1303	ev_init (&pipeev, pipecb);	1447	ev_init (&pipe_w, pipecb);
1304	ev_set_priority (&pipeev, EV_MAXPRI);	1448	ev_set_priority (&pipe_w, EV_MAXPRI);
1305	}	1449	}
1306	}	1450	}
1307		1451
		1452	/* free up a loop structure */
1308	static void noinline	1453	static void noinline
1309	loop_destroy (EV_P)	1454	loop_destroy (EV_P)
1310	{	1455	{
1311	int i;	1456	int i;
1312		1457
1313	if (ev_is_active (&pipeev))	1458	if (ev_is_active (&pipe_w))
1314	{	1459	{
1315	ev_ref (EV_A); /* signal watcher */	1460	ev_ref (EV_A); /* signal watcher */
1316	ev_io_stop (EV_A_ &pipeev);	1461	ev_io_stop (EV_A_ &pipe_w);
1317		1462
1318	#if EV_USE_EVENTFD	1463	#if EV_USE_EVENTFD
1319	if (evfd >= 0)	1464	if (evfd >= 0)
1320	close (evfd);	1465	close (evfd);
1321	#endif	1466	#endif
…		…
1360	}	1505	}
1361		1506
1362	ev_free (anfds); anfdmax = 0;	1507	ev_free (anfds); anfdmax = 0;
1363		1508
1364	/* have to use the microsoft-never-gets-it-right macro */	1509	/* have to use the microsoft-never-gets-it-right macro */
		1510	array_free (rfeed, EMPTY);
1365	array_free (fdchange, EMPTY);	1511	array_free (fdchange, EMPTY);
1366	array_free (timer, EMPTY);	1512	array_free (timer, EMPTY);
1367	#if EV_PERIODIC_ENABLE	1513	#if EV_PERIODIC_ENABLE
1368	array_free (periodic, EMPTY);	1514	array_free (periodic, EMPTY);
1369	#endif	1515	#endif
…		…
1378		1524
1379	backend = 0;	1525	backend = 0;
1380	}	1526	}
1381		1527
1382	#if EV_USE_INOTIFY	1528	#if EV_USE_INOTIFY
1383	void inline_size infy_fork (EV_P);	1529	inline_size void infy_fork (EV_P);
1384	#endif	1530	#endif
1385		1531
1386	void inline_size	1532	inline_size void
1387	loop_fork (EV_P)	1533	loop_fork (EV_P)
1388	{	1534	{
1389	#if EV_USE_PORT	1535	#if EV_USE_PORT
1390	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1536	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1391	#endif	1537	#endif
…		…
1397	#endif	1543	#endif
1398	#if EV_USE_INOTIFY	1544	#if EV_USE_INOTIFY
1399	infy_fork (EV_A);	1545	infy_fork (EV_A);
1400	#endif	1546	#endif
1401		1547
1402	if (ev_is_active (&pipeev))	1548	if (ev_is_active (&pipe_w))
1403	{	1549	{
1404	/* this "locks" the handlers against writing to the pipe */	1550	/* this "locks" the handlers against writing to the pipe */
1405	/* while we modify the fd vars */	1551	/* while we modify the fd vars */
1406	gotsig = 1;	1552	gotsig = 1;
1407	#if EV_ASYNC_ENABLE	1553	#if EV_ASYNC_ENABLE
1408	gotasync = 1;	1554	gotasync = 1;
1409	#endif	1555	#endif
1410		1556
1411	ev_ref (EV_A);	1557	ev_ref (EV_A);
1412	ev_io_stop (EV_A_ &pipeev);	1558	ev_io_stop (EV_A_ &pipe_w);
1413		1559
1414	#if EV_USE_EVENTFD	1560	#if EV_USE_EVENTFD
1415	if (evfd >= 0)	1561	if (evfd >= 0)
1416	close (evfd);	1562	close (evfd);
1417	#endif	1563	#endif
…		…
1422	close (evpipe [1]);	1568	close (evpipe [1]);
1423	}	1569	}
1424		1570
1425	evpipe_init (EV_A);	1571	evpipe_init (EV_A);
1426	/* now iterate over everything, in case we missed something */	1572	/* now iterate over everything, in case we missed something */
1427	pipecb (EV_A_ &pipeev, EV_READ);	1573	pipecb (EV_A_ &pipe_w, EV_READ);
1428	}	1574	}
1429		1575
1430	postfork = 0;	1576	postfork = 0;
1431	}	1577	}
1432		1578
1433	#if EV_MULTIPLICITY	1579	#if EV_MULTIPLICITY
		1580
1434	struct ev_loop *	1581	struct ev_loop *
1435	ev_loop_new (unsigned int flags)	1582	ev_loop_new (unsigned int flags)
1436	{	1583	{
1437	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1584	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1438		1585
…		…
1456	void	1603	void
1457	ev_loop_fork (EV_P)	1604	ev_loop_fork (EV_P)
1458	{	1605	{
1459	postfork = 1; /* must be in line with ev_default_fork */	1606	postfork = 1; /* must be in line with ev_default_fork */
1460	}	1607	}
		1608
		1609	#if EV_VERIFY
		1610	static void noinline
		1611	verify_watcher (EV_P_ W w)
		1612	{
		1613	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1614
		1615	if (w->pending)
		1616	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1617	}
		1618
		1619	static void noinline
		1620	verify_heap (EV_P_ ANHE *heap, int N)
		1621	{
		1622	int i;
		1623
		1624	for (i = HEAP0; i < N + HEAP0; ++i)
		1625	{
		1626	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1627	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1628	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1629
		1630	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1631	}
		1632	}
		1633
		1634	static void noinline
		1635	array_verify (EV_P_ W *ws, int cnt)
		1636	{
		1637	while (cnt--)
		1638	{
		1639	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1640	verify_watcher (EV_A_ ws [cnt]);
		1641	}
		1642	}
		1643	#endif
		1644
		1645	void
		1646	ev_loop_verify (EV_P)
		1647	{
		1648	#if EV_VERIFY
		1649	int i;
		1650	WL w;
		1651
		1652	assert (activecnt >= -1);
		1653
		1654	assert (fdchangemax >= fdchangecnt);
		1655	for (i = 0; i < fdchangecnt; ++i)
		1656	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1657
		1658	assert (anfdmax >= 0);
		1659	for (i = 0; i < anfdmax; ++i)
		1660	for (w = anfds [i].head; w; w = w->next)
		1661	{
		1662	verify_watcher (EV_A_ (W)w);
		1663	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1664	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1665	}
		1666
		1667	assert (timermax >= timercnt);
		1668	verify_heap (EV_A_ timers, timercnt);
		1669
		1670	#if EV_PERIODIC_ENABLE
		1671	assert (periodicmax >= periodiccnt);
		1672	verify_heap (EV_A_ periodics, periodiccnt);
		1673	#endif
		1674
		1675	for (i = NUMPRI; i--; )
		1676	{
		1677	assert (pendingmax [i] >= pendingcnt [i]);
		1678	#if EV_IDLE_ENABLE
		1679	assert (idleall >= 0);
		1680	assert (idlemax [i] >= idlecnt [i]);
		1681	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		1682	#endif
		1683	}
		1684
		1685	#if EV_FORK_ENABLE
		1686	assert (forkmax >= forkcnt);
		1687	array_verify (EV_A_ (W *)forks, forkcnt);
		1688	#endif
		1689
		1690	#if EV_ASYNC_ENABLE
		1691	assert (asyncmax >= asynccnt);
		1692	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1693	#endif
		1694
		1695	assert (preparemax >= preparecnt);
		1696	array_verify (EV_A_ (W *)prepares, preparecnt);
		1697
		1698	assert (checkmax >= checkcnt);
		1699	array_verify (EV_A_ (W *)checks, checkcnt);
		1700
		1701	# if 0
		1702	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1703	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1461	#endif	1704	# endif
		1705	#endif
		1706	}
		1707
		1708	#endif /* multiplicity */
1462		1709
1463	#if EV_MULTIPLICITY	1710	#if EV_MULTIPLICITY
1464	struct ev_loop *	1711	struct ev_loop *
1465	ev_default_loop_init (unsigned int flags)	1712	ev_default_loop_init (unsigned int flags)
1466	#else	1713	#else
…		…
1499	{	1746	{
1500	#if EV_MULTIPLICITY	1747	#if EV_MULTIPLICITY
1501	struct ev_loop *loop = ev_default_loop_ptr;	1748	struct ev_loop *loop = ev_default_loop_ptr;
1502	#endif	1749	#endif
1503		1750
		1751	ev_default_loop_ptr = 0;
		1752
1504	#ifndef _WIN32	1753	#ifndef _WIN32
1505	ev_ref (EV_A); /* child watcher */	1754	ev_ref (EV_A); /* child watcher */
1506	ev_signal_stop (EV_A_ &childev);	1755	ev_signal_stop (EV_A_ &childev);
1507	#endif	1756	#endif
1508		1757
…		…
1514	{	1763	{
1515	#if EV_MULTIPLICITY	1764	#if EV_MULTIPLICITY
1516	struct ev_loop *loop = ev_default_loop_ptr;	1765	struct ev_loop *loop = ev_default_loop_ptr;
1517	#endif	1766	#endif
1518		1767
1519	if (backend)
1520	postfork = 1; /* must be in line with ev_loop_fork */	1768	postfork = 1; /* must be in line with ev_loop_fork */
1521	}	1769	}
1522		1770
1523	/*****************************************************************************/	1771	/*****************************************************************************/
1524		1772
1525	void	1773	void
1526	ev_invoke (EV_P_ void *w, int revents)	1774	ev_invoke (EV_P_ void *w, int revents)
1527	{	1775	{
1528	EV_CB_INVOKE ((W)w, revents);	1776	EV_CB_INVOKE ((W)w, revents);
1529	}	1777	}
1530		1778
1531	void inline_speed	1779	inline_speed void
1532	call_pending (EV_P)	1780	call_pending (EV_P)
1533	{	1781	{
1534	int pri;	1782	int pri;
1535		1783
1536	for (pri = NUMPRI; pri--; )	1784	for (pri = NUMPRI; pri--; )
1537	while (pendingcnt [pri])	1785	while (pendingcnt [pri])
1538	{	1786	{
1539	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1787	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1540		1788
1541	if (expect_true (p->w))
1542	{
1543	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1789	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1790	/* ^ this is no longer true, as pending_w could be here */
1544		1791
1545	p->w->pending = 0;	1792	p->w->pending = 0;
1546	EV_CB_INVOKE (p->w, p->events);	1793	EV_CB_INVOKE (p->w, p->events);
1547	}	1794	EV_FREQUENT_CHECK;
1548	}	1795	}
1549	}	1796	}
1550		1797
1551	#if EV_IDLE_ENABLE	1798	#if EV_IDLE_ENABLE
1552	void inline_size	1799	/* make idle watchers pending. this handles the "call-idle */
		1800	/* only when higher priorities are idle" logic */
		1801	inline_size void
1553	idle_reify (EV_P)	1802	idle_reify (EV_P)
1554	{	1803	{
1555	if (expect_false (idleall))	1804	if (expect_false (idleall))
1556	{	1805	{
1557	int pri;	1806	int pri;
…		…
1569	}	1818	}
1570	}	1819	}
1571	}	1820	}
1572	#endif	1821	#endif
1573		1822
1574	void inline_size	1823	/* make timers pending */
		1824	inline_size void
1575	timers_reify (EV_P)	1825	timers_reify (EV_P)
1576	{	1826	{
		1827	EV_FREQUENT_CHECK;
		1828
1577	while (timercnt && ev_at (timers [HEAP0]) <= mn_now)	1829	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1578	{	1830	{
1579	ev_timer *w = (ev_timer *)timers [HEAP0];	1831	do
1580
1581	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1582
1583	/* first reschedule or stop timer */
1584	if (w->repeat)
1585	{	1832	{
		1833	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1834
		1835	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		1836
		1837	/* first reschedule or stop timer */
		1838	if (w->repeat)
		1839	{
		1840	ev_at (w) += w->repeat;
		1841	if (ev_at (w) < mn_now)
		1842	ev_at (w) = mn_now;
		1843
1586	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1844	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1587		1845
1588	ev_at (w) += w->repeat;	1846	ANHE_at_cache (timers [HEAP0]);
1589	if (ev_at (w) < mn_now)
1590	ev_at (w) = mn_now;
1591
1592	downheap (timers, timercnt, HEAP0);	1847	downheap (timers, timercnt, HEAP0);
		1848	}
		1849	else
		1850	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1851
		1852	EV_FREQUENT_CHECK;
		1853	feed_reverse (EV_A_ (W)w);
1593	}	1854	}
1594	else	1855	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1595	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1596		1856
1597	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1857	feed_reverse_done (EV_A_ EV_TIMEOUT);
1598	}	1858	}
1599	}	1859	}
1600		1860
1601	#if EV_PERIODIC_ENABLE	1861	#if EV_PERIODIC_ENABLE
1602	void inline_size	1862	/* make periodics pending */
		1863	inline_size void
1603	periodics_reify (EV_P)	1864	periodics_reify (EV_P)
1604	{	1865	{
		1866	EV_FREQUENT_CHECK;
		1867
1605	while (periodiccnt && ev_at (periodics [HEAP0]) <= ev_rt_now)	1868	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1606	{	1869	{
1607	ev_periodic *w = (ev_periodic *)periodics [HEAP0];	1870	int feed_count = 0;
1608		1871
1609	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	1872	do
1610
1611	/* first reschedule or stop timer */
1612	if (w->reschedule_cb)
1613	{	1873	{
		1874	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1875
		1876	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		1877
		1878	/* first reschedule or stop timer */
		1879	if (w->reschedule_cb)
		1880	{
1614	ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);	1881	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1882
1615	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));	1883	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		1884
		1885	ANHE_at_cache (periodics [HEAP0]);
1616	downheap (periodics, periodiccnt, 1);	1886	downheap (periodics, periodiccnt, HEAP0);
		1887	}
		1888	else if (w->interval)
		1889	{
		1890	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1891	/* if next trigger time is not sufficiently in the future, put it there */
		1892	/* this might happen because of floating point inexactness */
		1893	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1894	{
		1895	ev_at (w) += w->interval;
		1896
		1897	/* if interval is unreasonably low we might still have a time in the past */
		1898	/* so correct this. this will make the periodic very inexact, but the user */
		1899	/* has effectively asked to get triggered more often than possible */
		1900	if (ev_at (w) < ev_rt_now)
		1901	ev_at (w) = ev_rt_now;
		1902	}
		1903
		1904	ANHE_at_cache (periodics [HEAP0]);
		1905	downheap (periodics, periodiccnt, HEAP0);
		1906	}
		1907	else
		1908	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1909
		1910	EV_FREQUENT_CHECK;
		1911	feed_reverse (EV_A_ (W)w);
1617	}	1912	}
1618	else if (w->interval)	1913	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1619	{
1620	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1621	if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1622	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1623	downheap (periodics, periodiccnt, HEAP0);
1624	}
1625	else
1626	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1627		1914
1628	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1915	feed_reverse_done (EV_A_ EV_PERIODIC);
1629	}	1916	}
1630	}	1917	}
1631		1918
		1919	/* simply recalculate all periodics */
		1920	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1632	static void noinline	1921	static void noinline
1633	periodics_reschedule (EV_P)	1922	periodics_reschedule (EV_P)
1634	{	1923	{
1635	int i;	1924	int i;
1636		1925
1637	/* adjust periodics after time jump */	1926	/* adjust periodics after time jump */
1638	for (i = 1; i <= periodiccnt; ++i)	1927	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1639	{	1928	{
1640	ev_periodic *w = (ev_periodic *)periodics [i];	1929	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1641		1930
1642	if (w->reschedule_cb)	1931	if (w->reschedule_cb)
1643	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1932	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1644	else if (w->interval)	1933	else if (w->interval)
1645	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	1934	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1935
		1936	ANHE_at_cache (periodics [i]);
		1937	}
		1938
		1939	reheap (periodics, periodiccnt);
		1940	}
		1941	#endif
		1942
		1943	/* adjust all timers by a given offset */
		1944	static void noinline
		1945	timers_reschedule (EV_P_ ev_tstamp adjust)
		1946	{
		1947	int i;
		1948
		1949	for (i = 0; i < timercnt; ++i)
1646	}	1950	{
1647		1951	ANHE *he = timers + i + HEAP0;
1648	/* now rebuild the heap */	1952	ANHE_w (*he)->at += adjust;
1649	for (i = periodiccnt >> 1; --i; )	1953	ANHE_at_cache (*he);
1650	downheap (periodics, periodiccnt, i + HEAP0);	1954	}
1651	}	1955	}
1652	#endif
1653		1956
1654	void inline_speed	1957	/* fetch new monotonic and realtime times from the kernel */
		1958	/* also detetc if there was a timejump, and act accordingly */
		1959	inline_speed void
1655	time_update (EV_P_ ev_tstamp max_block)	1960	time_update (EV_P_ ev_tstamp max_block)
1656	{	1961	{
1657	int i;
1658
1659	#if EV_USE_MONOTONIC	1962	#if EV_USE_MONOTONIC
1660	if (expect_true (have_monotonic))	1963	if (expect_true (have_monotonic))
1661	{	1964	{
		1965	int i;
1662	ev_tstamp odiff = rtmn_diff;	1966	ev_tstamp odiff = rtmn_diff;
1663		1967
1664	mn_now = get_clock ();	1968	mn_now = get_clock ();
1665		1969
1666	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	1970	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1692	ev_rt_now = ev_time ();	1996	ev_rt_now = ev_time ();
1693	mn_now = get_clock ();	1997	mn_now = get_clock ();
1694	now_floor = mn_now;	1998	now_floor = mn_now;
1695	}	1999	}
1696		2000
		2001	/* no timer adjustment, as the monotonic clock doesn't jump */
		2002	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1697	# if EV_PERIODIC_ENABLE	2003	# if EV_PERIODIC_ENABLE
1698	periodics_reschedule (EV_A);	2004	periodics_reschedule (EV_A);
1699	# endif	2005	# endif
1700	/* no timer adjustment, as the monotonic clock doesn't jump */
1701	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1702	}	2006	}
1703	else	2007	else
1704	#endif	2008	#endif
1705	{	2009	{
1706	ev_rt_now = ev_time ();	2010	ev_rt_now = ev_time ();
1707		2011
1708	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2012	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1709	{	2013	{
		2014	/* adjust timers. this is easy, as the offset is the same for all of them */
		2015	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1710	#if EV_PERIODIC_ENABLE	2016	#if EV_PERIODIC_ENABLE
1711	periodics_reschedule (EV_A);	2017	periodics_reschedule (EV_A);
1712	#endif	2018	#endif
1713	/* adjust timers. this is easy, as the offset is the same for all of them */
1714	for (i = 1; i <= timercnt; ++i)
1715	ev_at (timers [i]) += ev_rt_now - mn_now;
1716	}	2019	}
1717		2020
1718	mn_now = ev_rt_now;	2021	mn_now = ev_rt_now;
1719	}	2022	}
1720	}	2023	}
1721		2024
1722	void
1723	ev_ref (EV_P)
1724	{
1725	++activecnt;
1726	}
1727
1728	void
1729	ev_unref (EV_P)
1730	{
1731	--activecnt;
1732	}
1733
1734	static int loop_done;	2025	static int loop_done;
1735		2026
1736	void	2027	void
1737	ev_loop (EV_P_ int flags)	2028	ev_loop (EV_P_ int flags)
1738	{	2029	{
…		…
1740		2031
1741	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2032	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1742		2033
1743	do	2034	do
1744	{	2035	{
		2036	#if EV_VERIFY >= 2
		2037	ev_loop_verify (EV_A);
		2038	#endif
		2039
1745	#ifndef _WIN32	2040	#ifndef _WIN32
1746	if (expect_false (curpid)) /* penalise the forking check even more */	2041	if (expect_false (curpid)) /* penalise the forking check even more */
1747	if (expect_false (getpid () != curpid))	2042	if (expect_false (getpid () != curpid))
1748	{	2043	{
1749	curpid = getpid ();	2044	curpid = getpid ();
…		…
1766	{	2061	{
1767	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2062	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1768	call_pending (EV_A);	2063	call_pending (EV_A);
1769	}	2064	}
1770		2065
1771	if (expect_false (!activecnt))
1772	break;
1773
1774	/* we might have forked, so reify kernel state if necessary */	2066	/* we might have forked, so reify kernel state if necessary */
1775	if (expect_false (postfork))	2067	if (expect_false (postfork))
1776	loop_fork (EV_A);	2068	loop_fork (EV_A);
1777		2069
1778	/* update fd-related kernel structures */	2070	/* update fd-related kernel structures */
…		…
1790		2082
1791	waittime = MAX_BLOCKTIME;	2083	waittime = MAX_BLOCKTIME;
1792		2084
1793	if (timercnt)	2085	if (timercnt)
1794	{	2086	{
1795	ev_tstamp to = ev_at (timers [HEAP0]) - mn_now + backend_fudge;	2087	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1796	if (waittime > to) waittime = to;	2088	if (waittime > to) waittime = to;
1797	}	2089	}
1798		2090
1799	#if EV_PERIODIC_ENABLE	2091	#if EV_PERIODIC_ENABLE
1800	if (periodiccnt)	2092	if (periodiccnt)
1801	{	2093	{
1802	ev_tstamp to = ev_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2094	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1803	if (waittime > to) waittime = to;	2095	if (waittime > to) waittime = to;
1804	}	2096	}
1805	#endif	2097	#endif
1806		2098
1807	if (expect_false (waittime < timeout_blocktime))	2099	if (expect_false (waittime < timeout_blocktime))
…		…
1857	ev_unloop (EV_P_ int how)	2149	ev_unloop (EV_P_ int how)
1858	{	2150	{
1859	loop_done = how;	2151	loop_done = how;
1860	}	2152	}
1861		2153
		2154	void
		2155	ev_ref (EV_P)
		2156	{
		2157	++activecnt;
		2158	}
		2159
		2160	void
		2161	ev_unref (EV_P)
		2162	{
		2163	--activecnt;
		2164	}
		2165
		2166	void
		2167	ev_now_update (EV_P)
		2168	{
		2169	time_update (EV_A_ 1e100);
		2170	}
		2171
		2172	void
		2173	ev_suspend (EV_P)
		2174	{
		2175	ev_now_update (EV_A);
		2176	}
		2177
		2178	void
		2179	ev_resume (EV_P)
		2180	{
		2181	ev_tstamp mn_prev = mn_now;
		2182
		2183	ev_now_update (EV_A);
		2184	timers_reschedule (EV_A_ mn_now - mn_prev);
		2185	#if EV_PERIODIC_ENABLE
		2186	/* TODO: really do this? */
		2187	periodics_reschedule (EV_A);
		2188	#endif
		2189	}
		2190
1862	/*****************************************************************************/	2191	/*****************************************************************************/
		2192	/* singly-linked list management, used when the expected list length is short */
1863		2193
1864	void inline_size	2194	inline_size void
1865	wlist_add (WL *head, WL elem)	2195	wlist_add (WL *head, WL elem)
1866	{	2196	{
1867	elem->next = *head;	2197	elem->next = *head;
1868	*head = elem;	2198	*head = elem;
1869	}	2199	}
1870		2200
1871	void inline_size	2201	inline_size void
1872	wlist_del (WL *head, WL elem)	2202	wlist_del (WL *head, WL elem)
1873	{	2203	{
1874	while (*head)	2204	while (*head)
1875	{	2205	{
1876	if (*head == elem)	2206	if (*head == elem)
…		…
1881		2211
1882	head = &(*head)->next;	2212	head = &(*head)->next;
1883	}	2213	}
1884	}	2214	}
1885		2215
1886	void inline_speed	2216	/* internal, faster, version of ev_clear_pending */
		2217	inline_speed void
1887	clear_pending (EV_P_ W w)	2218	clear_pending (EV_P_ W w)
1888	{	2219	{
1889	if (w->pending)	2220	if (w->pending)
1890	{	2221	{
1891	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2222	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1892	w->pending = 0;	2223	w->pending = 0;
1893	}	2224	}
1894	}	2225	}
1895		2226
1896	int	2227	int
…		…
1900	int pending = w_->pending;	2231	int pending = w_->pending;
1901		2232
1902	if (expect_true (pending))	2233	if (expect_true (pending))
1903	{	2234	{
1904	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2235	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2236	p->w = (W)&pending_w;
1905	w_->pending = 0;	2237	w_->pending = 0;
1906	p->w = 0;
1907	return p->events;	2238	return p->events;
1908	}	2239	}
1909	else	2240	else
1910	return 0;	2241	return 0;
1911	}	2242	}
1912		2243
1913	void inline_size	2244	inline_size void
1914	pri_adjust (EV_P_ W w)	2245	pri_adjust (EV_P_ W w)
1915	{	2246	{
1916	int pri = w->priority;	2247	int pri = w->priority;
1917	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2248	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1918	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2249	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1919	w->priority = pri;	2250	w->priority = pri;
1920	}	2251	}
1921		2252
1922	void inline_speed	2253	inline_speed void
1923	ev_start (EV_P_ W w, int active)	2254	ev_start (EV_P_ W w, int active)
1924	{	2255	{
1925	pri_adjust (EV_A_ w);	2256	pri_adjust (EV_A_ w);
1926	w->active = active;	2257	w->active = active;
1927	ev_ref (EV_A);	2258	ev_ref (EV_A);
1928	}	2259	}
1929		2260
1930	void inline_size	2261	inline_size void
1931	ev_stop (EV_P_ W w)	2262	ev_stop (EV_P_ W w)
1932	{	2263	{
1933	ev_unref (EV_A);	2264	ev_unref (EV_A);
1934	w->active = 0;	2265	w->active = 0;
1935	}	2266	}
…		…
1942	int fd = w->fd;	2273	int fd = w->fd;
1943		2274
1944	if (expect_false (ev_is_active (w)))	2275	if (expect_false (ev_is_active (w)))
1945	return;	2276	return;
1946		2277
1947	assert (("ev_io_start called with negative fd", fd >= 0));	2278	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2279	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
		2280
		2281	EV_FREQUENT_CHECK;
1948		2282
1949	ev_start (EV_A_ (W)w, 1);	2283	ev_start (EV_A_ (W)w, 1);
1950	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2284	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1951	wlist_add (&anfds[fd].head, (WL)w);	2285	wlist_add (&anfds[fd].head, (WL)w);
1952		2286
1953	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2287	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
1954	w->events &= ~EV_IOFDSET;	2288	w->events &= ~EV__IOFDSET;
		2289
		2290	EV_FREQUENT_CHECK;
1955	}	2291	}
1956		2292
1957	void noinline	2293	void noinline
1958	ev_io_stop (EV_P_ ev_io *w)	2294	ev_io_stop (EV_P_ ev_io *w)
1959	{	2295	{
1960	clear_pending (EV_A_ (W)w);	2296	clear_pending (EV_A_ (W)w);
1961	if (expect_false (!ev_is_active (w)))	2297	if (expect_false (!ev_is_active (w)))
1962	return;	2298	return;
1963		2299
1964	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2300	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		2301
		2302	EV_FREQUENT_CHECK;
1965		2303
1966	wlist_del (&anfds[w->fd].head, (WL)w);	2304	wlist_del (&anfds[w->fd].head, (WL)w);
1967	ev_stop (EV_A_ (W)w);	2305	ev_stop (EV_A_ (W)w);
1968		2306
1969	fd_change (EV_A_ w->fd, 1);	2307	fd_change (EV_A_ w->fd, 1);
		2308
		2309	EV_FREQUENT_CHECK;
1970	}	2310	}
1971		2311
1972	void noinline	2312	void noinline
1973	ev_timer_start (EV_P_ ev_timer *w)	2313	ev_timer_start (EV_P_ ev_timer *w)
1974	{	2314	{
1975	if (expect_false (ev_is_active (w)))	2315	if (expect_false (ev_is_active (w)))
1976	return;	2316	return;
1977		2317
1978	ev_at (w) += mn_now;	2318	ev_at (w) += mn_now;
1979		2319
1980	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2320	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1981		2321
		2322	EV_FREQUENT_CHECK;
		2323
		2324	++timercnt;
1982	ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1);	2325	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1983	array_needsize (WT, timers, timermax, timercnt + HEAP0, EMPTY2);	2326	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1984	timers [ev_active (w)] = (WT)w;	2327	ANHE_w (timers [ev_active (w)]) = (WT)w;
		2328	ANHE_at_cache (timers [ev_active (w)]);
1985	upheap (timers, ev_active (w));	2329	upheap (timers, ev_active (w));
1986		2330
		2331	EV_FREQUENT_CHECK;
		2332
1987	/*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/	2333	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1988	}	2334	}
1989		2335
1990	void noinline	2336	void noinline
1991	ev_timer_stop (EV_P_ ev_timer *w)	2337	ev_timer_stop (EV_P_ ev_timer *w)
1992	{	2338	{
1993	clear_pending (EV_A_ (W)w);	2339	clear_pending (EV_A_ (W)w);
1994	if (expect_false (!ev_is_active (w)))	2340	if (expect_false (!ev_is_active (w)))
1995	return;	2341	return;
1996		2342
		2343	EV_FREQUENT_CHECK;
		2344
1997	{	2345	{
1998	int active = ev_active (w);	2346	int active = ev_active (w);
1999		2347
2000	assert (("internal timer heap corruption", timers [active] == (WT)w));	2348	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2001		2349
		2350	--timercnt;
		2351
2002	if (expect_true (active < timercnt + HEAP0 - 1))	2352	if (expect_true (active < timercnt + HEAP0))
2003	{	2353	{
2004	timers [active] = timers [timercnt + HEAP0 - 1];	2354	timers [active] = timers [timercnt + HEAP0];
2005	adjustheap (timers, timercnt, active);	2355	adjustheap (timers, timercnt, active);
2006	}	2356	}
2007
2008	--timercnt;
2009	}	2357	}
		2358
		2359	EV_FREQUENT_CHECK;
2010		2360
2011	ev_at (w) -= mn_now;	2361	ev_at (w) -= mn_now;
2012		2362
2013	ev_stop (EV_A_ (W)w);	2363	ev_stop (EV_A_ (W)w);
2014	}	2364	}
2015		2365
2016	void noinline	2366	void noinline
2017	ev_timer_again (EV_P_ ev_timer *w)	2367	ev_timer_again (EV_P_ ev_timer *w)
2018	{	2368	{
		2369	EV_FREQUENT_CHECK;
		2370
2019	if (ev_is_active (w))	2371	if (ev_is_active (w))
2020	{	2372	{
2021	if (w->repeat)	2373	if (w->repeat)
2022	{	2374	{
2023	ev_at (w) = mn_now + w->repeat;	2375	ev_at (w) = mn_now + w->repeat;
		2376	ANHE_at_cache (timers [ev_active (w)]);
2024	adjustheap (timers, timercnt, ev_active (w));	2377	adjustheap (timers, timercnt, ev_active (w));
2025	}	2378	}
2026	else	2379	else
2027	ev_timer_stop (EV_A_ w);	2380	ev_timer_stop (EV_A_ w);
2028	}	2381	}
2029	else if (w->repeat)	2382	else if (w->repeat)
2030	{	2383	{
2031	ev_at (w) = w->repeat;	2384	ev_at (w) = w->repeat;
2032	ev_timer_start (EV_A_ w);	2385	ev_timer_start (EV_A_ w);
2033	}	2386	}
		2387
		2388	EV_FREQUENT_CHECK;
2034	}	2389	}
2035		2390
2036	#if EV_PERIODIC_ENABLE	2391	#if EV_PERIODIC_ENABLE
2037	void noinline	2392	void noinline
2038	ev_periodic_start (EV_P_ ev_periodic *w)	2393	ev_periodic_start (EV_P_ ev_periodic *w)
…		…
2042		2397
2043	if (w->reschedule_cb)	2398	if (w->reschedule_cb)
2044	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2399	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2045	else if (w->interval)	2400	else if (w->interval)
2046	{	2401	{
2047	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2402	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2048	/* this formula differs from the one in periodic_reify because we do not always round up */	2403	/* this formula differs from the one in periodic_reify because we do not always round up */
2049	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2404	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2050	}	2405	}
2051	else	2406	else
2052	ev_at (w) = w->offset;	2407	ev_at (w) = w->offset;
2053		2408
		2409	EV_FREQUENT_CHECK;
		2410
		2411	++periodiccnt;
2054	ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1);	2412	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2055	array_needsize (WT, periodics, periodicmax, periodiccnt + HEAP0, EMPTY2);	2413	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2056	periodics [ev_active (w)] = (WT)w;	2414	ANHE_w (periodics [ev_active (w)]) = (WT)w;
		2415	ANHE_at_cache (periodics [ev_active (w)]);
2057	upheap (periodics, ev_active (w));	2416	upheap (periodics, ev_active (w));
2058		2417
		2418	EV_FREQUENT_CHECK;
		2419
2059	/*assert (("internal periodic heap corruption", periodics [ev_active (w)] == w));*/	2420	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2060	}	2421	}
2061		2422
2062	void noinline	2423	void noinline
2063	ev_periodic_stop (EV_P_ ev_periodic *w)	2424	ev_periodic_stop (EV_P_ ev_periodic *w)
2064	{	2425	{
2065	clear_pending (EV_A_ (W)w);	2426	clear_pending (EV_A_ (W)w);
2066	if (expect_false (!ev_is_active (w)))	2427	if (expect_false (!ev_is_active (w)))
2067	return;	2428	return;
2068		2429
		2430	EV_FREQUENT_CHECK;
		2431
2069	{	2432	{
2070	int active = ev_active (w);	2433	int active = ev_active (w);
2071		2434
2072	assert (("internal periodic heap corruption", periodics [active] == (WT)w));	2435	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2073		2436
		2437	--periodiccnt;
		2438
2074	if (expect_true (active < periodiccnt + HEAP0 - 1))	2439	if (expect_true (active < periodiccnt + HEAP0))
2075	{	2440	{
2076	periodics [active] = periodics [periodiccnt + HEAP0 - 1];	2441	periodics [active] = periodics [periodiccnt + HEAP0];
2077	adjustheap (periodics, periodiccnt, active);	2442	adjustheap (periodics, periodiccnt, active);
2078	}	2443	}
2079
2080	--periodiccnt;
2081	}	2444	}
		2445
		2446	EV_FREQUENT_CHECK;
2082		2447
2083	ev_stop (EV_A_ (W)w);	2448	ev_stop (EV_A_ (W)w);
2084	}	2449	}
2085		2450
2086	void noinline	2451	void noinline
…		…
2098		2463
2099	void noinline	2464	void noinline
2100	ev_signal_start (EV_P_ ev_signal *w)	2465	ev_signal_start (EV_P_ ev_signal *w)
2101	{	2466	{
2102	#if EV_MULTIPLICITY	2467	#if EV_MULTIPLICITY
2103	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2468	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2104	#endif	2469	#endif
2105	if (expect_false (ev_is_active (w)))	2470	if (expect_false (ev_is_active (w)))
2106	return;	2471	return;
2107		2472
2108	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2473	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2109		2474
2110	evpipe_init (EV_A);	2475	evpipe_init (EV_A);
		2476
		2477	EV_FREQUENT_CHECK;
2111		2478
2112	{	2479	{
2113	#ifndef _WIN32	2480	#ifndef _WIN32
2114	sigset_t full, prev;	2481	sigset_t full, prev;
2115	sigfillset (&full);	2482	sigfillset (&full);
2116	sigprocmask (SIG_SETMASK, &full, &prev);	2483	sigprocmask (SIG_SETMASK, &full, &prev);
2117	#endif	2484	#endif
2118		2485
2119	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2486	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2120		2487
2121	#ifndef _WIN32	2488	#ifndef _WIN32
2122	sigprocmask (SIG_SETMASK, &prev, 0);	2489	sigprocmask (SIG_SETMASK, &prev, 0);
2123	#endif	2490	#endif
2124	}	2491	}
…		…
2136	sigfillset (&sa.sa_mask);	2503	sigfillset (&sa.sa_mask);
2137	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2504	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2138	sigaction (w->signum, &sa, 0);	2505	sigaction (w->signum, &sa, 0);
2139	#endif	2506	#endif
2140	}	2507	}
		2508
		2509	EV_FREQUENT_CHECK;
2141	}	2510	}
2142		2511
2143	void noinline	2512	void noinline
2144	ev_signal_stop (EV_P_ ev_signal *w)	2513	ev_signal_stop (EV_P_ ev_signal *w)
2145	{	2514	{
2146	clear_pending (EV_A_ (W)w);	2515	clear_pending (EV_A_ (W)w);
2147	if (expect_false (!ev_is_active (w)))	2516	if (expect_false (!ev_is_active (w)))
2148	return;	2517	return;
2149		2518
		2519	EV_FREQUENT_CHECK;
		2520
2150	wlist_del (&signals [w->signum - 1].head, (WL)w);	2521	wlist_del (&signals [w->signum - 1].head, (WL)w);
2151	ev_stop (EV_A_ (W)w);	2522	ev_stop (EV_A_ (W)w);
2152		2523
2153	if (!signals [w->signum - 1].head)	2524	if (!signals [w->signum - 1].head)
2154	signal (w->signum, SIG_DFL);	2525	signal (w->signum, SIG_DFL);
		2526
		2527	EV_FREQUENT_CHECK;
2155	}	2528	}
2156		2529
2157	void	2530	void
2158	ev_child_start (EV_P_ ev_child *w)	2531	ev_child_start (EV_P_ ev_child *w)
2159	{	2532	{
2160	#if EV_MULTIPLICITY	2533	#if EV_MULTIPLICITY
2161	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2534	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2162	#endif	2535	#endif
2163	if (expect_false (ev_is_active (w)))	2536	if (expect_false (ev_is_active (w)))
2164	return;	2537	return;
2165		2538
		2539	EV_FREQUENT_CHECK;
		2540
2166	ev_start (EV_A_ (W)w, 1);	2541	ev_start (EV_A_ (W)w, 1);
2167	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2542	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2543
		2544	EV_FREQUENT_CHECK;
2168	}	2545	}
2169		2546
2170	void	2547	void
2171	ev_child_stop (EV_P_ ev_child *w)	2548	ev_child_stop (EV_P_ ev_child *w)
2172	{	2549	{
2173	clear_pending (EV_A_ (W)w);	2550	clear_pending (EV_A_ (W)w);
2174	if (expect_false (!ev_is_active (w)))	2551	if (expect_false (!ev_is_active (w)))
2175	return;	2552	return;
2176		2553
		2554	EV_FREQUENT_CHECK;
		2555
2177	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2556	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2178	ev_stop (EV_A_ (W)w);	2557	ev_stop (EV_A_ (W)w);
		2558
		2559	EV_FREQUENT_CHECK;
2179	}	2560	}
2180		2561
2181	#if EV_STAT_ENABLE	2562	#if EV_STAT_ENABLE
2182		2563
2183	# ifdef _WIN32	2564	# ifdef _WIN32
2184	# undef lstat	2565	# undef lstat
2185	# define lstat(a,b) _stati64 (a,b)	2566	# define lstat(a,b) _stati64 (a,b)
2186	# endif	2567	# endif
2187		2568
2188	#define DEF_STAT_INTERVAL 5.0074891	2569	#define DEF_STAT_INTERVAL 5.0074891
		2570	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2189	#define MIN_STAT_INTERVAL 0.1074891	2571	#define MIN_STAT_INTERVAL 0.1074891
2190		2572
2191	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2573	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2192		2574
2193	#if EV_USE_INOTIFY	2575	#if EV_USE_INOTIFY
2194	# define EV_INOTIFY_BUFSIZE 8192	2576	# define EV_INOTIFY_BUFSIZE 8192
…		…
2198	{	2580	{
2199	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);	2581	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);
2200		2582
2201	if (w->wd < 0)	2583	if (w->wd < 0)
2202	{	2584	{
		2585	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2203	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2586	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2204		2587
2205	/* monitor some parent directory for speedup hints */	2588	/* monitor some parent directory for speedup hints */
2206	/* note that exceeding the hardcoded limit is not a correctness issue, */	2589	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2207	/* but an efficiency issue only */	2590	/* but an efficiency issue only */
2208	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2591	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2209	{	2592	{
2210	char path [4096];	2593	char path [4096];
2211	strcpy (path, w->path);	2594	strcpy (path, w->path);
…		…
2215	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2598	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2216	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2599	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2217		2600
2218	char *pend = strrchr (path, '/');	2601	char *pend = strrchr (path, '/');
2219		2602
2220	if (!pend)	2603	if (!pend || pend == path)
2221	break; /* whoops, no '/', complain to your admin */	2604	break;
2222		2605
2223	*pend = 0;	2606	*pend = 0;
2224	w->wd = inotify_add_watch (fs_fd, path, mask);	2607	w->wd = inotify_add_watch (fs_fd, path, mask);
2225	}	2608	}
2226	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2609	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2227	}	2610	}
2228	}	2611	}
2229	else
2230	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2231		2612
2232	if (w->wd >= 0)	2613	if (w->wd >= 0)
		2614	{
2233	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2615	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2616
		2617	/* now local changes will be tracked by inotify, but remote changes won't */
		2618	/* unless the filesystem it known to be local, we therefore still poll */
		2619	/* also do poll on <2.6.25, but with normal frequency */
		2620	struct statfs sfs;
		2621
		2622	if (fs_2625 && !statfs (w->path, &sfs))
		2623	if (sfs.f_type == 0x1373 /* devfs */
		2624	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2625	|| sfs.f_type == 0x3153464a /* jfs */
		2626	|| sfs.f_type == 0x52654973 /* reiser3 */
		2627	|| sfs.f_type == 0x01021994 /* tempfs */
		2628	|| sfs.f_type == 0x58465342 /* xfs */)
		2629	return;
		2630
		2631	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2632	ev_timer_again (EV_A_ &w->timer);
		2633	}
2234	}	2634	}
2235		2635
2236	static void noinline	2636	static void noinline
2237	infy_del (EV_P_ ev_stat *w)	2637	infy_del (EV_P_ ev_stat *w)
2238	{	2638	{
…		…
2252		2652
2253	static void noinline	2653	static void noinline
2254	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2654	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2255	{	2655	{
2256	if (slot < 0)	2656	if (slot < 0)
2257	/* overflow, need to check for all hahs slots */	2657	/* overflow, need to check for all hash slots */
2258	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2658	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2259	infy_wd (EV_A_ slot, wd, ev);	2659	infy_wd (EV_A_ slot, wd, ev);
2260	else	2660	else
2261	{	2661	{
2262	WL w_;	2662	WL w_;
…		…
2268		2668
2269	if (w->wd == wd || wd == -1)	2669	if (w->wd == wd || wd == -1)
2270	{	2670	{
2271	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2671	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2272	{	2672	{
		2673	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2273	w->wd = -1;	2674	w->wd = -1;
2274	infy_add (EV_A_ w); /* re-add, no matter what */	2675	infy_add (EV_A_ w); /* re-add, no matter what */
2275	}	2676	}
2276		2677
2277	stat_timer_cb (EV_A_ &w->timer, 0);	2678	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2290		2691
2291	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2692	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2292	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2693	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2293	}	2694	}
2294		2695
2295	void inline_size	2696	inline_size void
		2697	check_2625 (EV_P)
		2698	{
		2699	/* kernels < 2.6.25 are borked
		2700	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2701	*/
		2702	struct utsname buf;
		2703	int major, minor, micro;
		2704
		2705	if (uname (&buf))
		2706	return;
		2707
		2708	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2709	return;
		2710
		2711	if (major < 2
		2712	|| (major == 2 && minor < 6)
		2713	|| (major == 2 && minor == 6 && micro < 25))
		2714	return;
		2715
		2716	fs_2625 = 1;
		2717	}
		2718
		2719	inline_size void
2296	infy_init (EV_P)	2720	infy_init (EV_P)
2297	{	2721	{
2298	if (fs_fd != -2)	2722	if (fs_fd != -2)
2299	return;	2723	return;
		2724
		2725	fs_fd = -1;
		2726
		2727	check_2625 (EV_A);
2300		2728
2301	fs_fd = inotify_init ();	2729	fs_fd = inotify_init ();
2302		2730
2303	if (fs_fd >= 0)	2731	if (fs_fd >= 0)
2304	{	2732	{
…		…
2306	ev_set_priority (&fs_w, EV_MAXPRI);	2734	ev_set_priority (&fs_w, EV_MAXPRI);
2307	ev_io_start (EV_A_ &fs_w);	2735	ev_io_start (EV_A_ &fs_w);
2308	}	2736	}
2309	}	2737	}
2310		2738
2311	void inline_size	2739	inline_size void
2312	infy_fork (EV_P)	2740	infy_fork (EV_P)
2313	{	2741	{
2314	int slot;	2742	int slot;
2315		2743
2316	if (fs_fd < 0)	2744	if (fs_fd < 0)
…		…
2332	w->wd = -1;	2760	w->wd = -1;
2333		2761
2334	if (fs_fd >= 0)	2762	if (fs_fd >= 0)
2335	infy_add (EV_A_ w); /* re-add, no matter what */	2763	infy_add (EV_A_ w); /* re-add, no matter what */
2336	else	2764	else
2337	ev_timer_start (EV_A_ &w->timer);	2765	ev_timer_again (EV_A_ &w->timer);
2338	}	2766	}
2339
2340	}	2767	}
2341	}	2768	}
2342		2769
		2770	#endif
		2771
		2772	#ifdef _WIN32
		2773	# define EV_LSTAT(p,b) _stati64 (p, b)
		2774	#else
		2775	# define EV_LSTAT(p,b) lstat (p, b)
2343	#endif	2776	#endif
2344		2777
2345	void	2778	void
2346	ev_stat_stat (EV_P_ ev_stat *w)	2779	ev_stat_stat (EV_P_ ev_stat *w)
2347	{	2780	{
…		…
2374	|| w->prev.st_atime != w->attr.st_atime	2807	|| w->prev.st_atime != w->attr.st_atime
2375	|| w->prev.st_mtime != w->attr.st_mtime	2808	|| w->prev.st_mtime != w->attr.st_mtime
2376	|| w->prev.st_ctime != w->attr.st_ctime	2809	|| w->prev.st_ctime != w->attr.st_ctime
2377	) {	2810	) {
2378	#if EV_USE_INOTIFY	2811	#if EV_USE_INOTIFY
		2812	if (fs_fd >= 0)
		2813	{
2379	infy_del (EV_A_ w);	2814	infy_del (EV_A_ w);
2380	infy_add (EV_A_ w);	2815	infy_add (EV_A_ w);
2381	ev_stat_stat (EV_A_ w); /* avoid race... */	2816	ev_stat_stat (EV_A_ w); /* avoid race... */
		2817	}
2382	#endif	2818	#endif
2383		2819
2384	ev_feed_event (EV_A_ w, EV_STAT);	2820	ev_feed_event (EV_A_ w, EV_STAT);
2385	}	2821	}
2386	}	2822	}
…		…
2389	ev_stat_start (EV_P_ ev_stat *w)	2825	ev_stat_start (EV_P_ ev_stat *w)
2390	{	2826	{
2391	if (expect_false (ev_is_active (w)))	2827	if (expect_false (ev_is_active (w)))
2392	return;	2828	return;
2393		2829
2394	/* since we use memcmp, we need to clear any padding data etc. */
2395	memset (&w->prev, 0, sizeof (ev_statdata));
2396	memset (&w->attr, 0, sizeof (ev_statdata));
2397
2398	ev_stat_stat (EV_A_ w);	2830	ev_stat_stat (EV_A_ w);
2399		2831
		2832	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2400	if (w->interval < MIN_STAT_INTERVAL)	2833	w->interval = MIN_STAT_INTERVAL;
2401	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2402		2834
2403	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2835	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2404	ev_set_priority (&w->timer, ev_priority (w));	2836	ev_set_priority (&w->timer, ev_priority (w));
2405		2837
2406	#if EV_USE_INOTIFY	2838	#if EV_USE_INOTIFY
2407	infy_init (EV_A);	2839	infy_init (EV_A);
2408		2840
2409	if (fs_fd >= 0)	2841	if (fs_fd >= 0)
2410	infy_add (EV_A_ w);	2842	infy_add (EV_A_ w);
2411	else	2843	else
2412	#endif	2844	#endif
2413	ev_timer_start (EV_A_ &w->timer);	2845	ev_timer_again (EV_A_ &w->timer);
2414		2846
2415	ev_start (EV_A_ (W)w, 1);	2847	ev_start (EV_A_ (W)w, 1);
		2848
		2849	EV_FREQUENT_CHECK;
2416	}	2850	}
2417		2851
2418	void	2852	void
2419	ev_stat_stop (EV_P_ ev_stat *w)	2853	ev_stat_stop (EV_P_ ev_stat *w)
2420	{	2854	{
2421	clear_pending (EV_A_ (W)w);	2855	clear_pending (EV_A_ (W)w);
2422	if (expect_false (!ev_is_active (w)))	2856	if (expect_false (!ev_is_active (w)))
2423	return;	2857	return;
2424		2858
		2859	EV_FREQUENT_CHECK;
		2860
2425	#if EV_USE_INOTIFY	2861	#if EV_USE_INOTIFY
2426	infy_del (EV_A_ w);	2862	infy_del (EV_A_ w);
2427	#endif	2863	#endif
2428	ev_timer_stop (EV_A_ &w->timer);	2864	ev_timer_stop (EV_A_ &w->timer);
2429		2865
2430	ev_stop (EV_A_ (W)w);	2866	ev_stop (EV_A_ (W)w);
		2867
		2868	EV_FREQUENT_CHECK;
2431	}	2869	}
2432	#endif	2870	#endif
2433		2871
2434	#if EV_IDLE_ENABLE	2872	#if EV_IDLE_ENABLE
2435	void	2873	void
…		…
2437	{	2875	{
2438	if (expect_false (ev_is_active (w)))	2876	if (expect_false (ev_is_active (w)))
2439	return;	2877	return;
2440		2878
2441	pri_adjust (EV_A_ (W)w);	2879	pri_adjust (EV_A_ (W)w);
		2880
		2881	EV_FREQUENT_CHECK;
2442		2882
2443	{	2883	{
2444	int active = ++idlecnt [ABSPRI (w)];	2884	int active = ++idlecnt [ABSPRI (w)];
2445		2885
2446	++idleall;	2886	++idleall;
2447	ev_start (EV_A_ (W)w, active);	2887	ev_start (EV_A_ (W)w, active);
2448		2888
2449	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	2889	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2450	idles [ABSPRI (w)][active - 1] = w;	2890	idles [ABSPRI (w)][active - 1] = w;
2451	}	2891	}
		2892
		2893	EV_FREQUENT_CHECK;
2452	}	2894	}
2453		2895
2454	void	2896	void
2455	ev_idle_stop (EV_P_ ev_idle *w)	2897	ev_idle_stop (EV_P_ ev_idle *w)
2456	{	2898	{
2457	clear_pending (EV_A_ (W)w);	2899	clear_pending (EV_A_ (W)w);
2458	if (expect_false (!ev_is_active (w)))	2900	if (expect_false (!ev_is_active (w)))
2459	return;	2901	return;
2460		2902
		2903	EV_FREQUENT_CHECK;
		2904
2461	{	2905	{
2462	int active = ev_active (w);	2906	int active = ev_active (w);
2463		2907
2464	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	2908	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2465	ev_active (idles [ABSPRI (w)][active - 1]) = active;	2909	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2466		2910
2467	ev_stop (EV_A_ (W)w);	2911	ev_stop (EV_A_ (W)w);
2468	--idleall;	2912	--idleall;
2469	}	2913	}
		2914
		2915	EV_FREQUENT_CHECK;
2470	}	2916	}
2471	#endif	2917	#endif
2472		2918
2473	void	2919	void
2474	ev_prepare_start (EV_P_ ev_prepare *w)	2920	ev_prepare_start (EV_P_ ev_prepare *w)
2475	{	2921	{
2476	if (expect_false (ev_is_active (w)))	2922	if (expect_false (ev_is_active (w)))
2477	return;	2923	return;
		2924
		2925	EV_FREQUENT_CHECK;
2478		2926
2479	ev_start (EV_A_ (W)w, ++preparecnt);	2927	ev_start (EV_A_ (W)w, ++preparecnt);
2480	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	2928	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2481	prepares [preparecnt - 1] = w;	2929	prepares [preparecnt - 1] = w;
		2930
		2931	EV_FREQUENT_CHECK;
2482	}	2932	}
2483		2933
2484	void	2934	void
2485	ev_prepare_stop (EV_P_ ev_prepare *w)	2935	ev_prepare_stop (EV_P_ ev_prepare *w)
2486	{	2936	{
2487	clear_pending (EV_A_ (W)w);	2937	clear_pending (EV_A_ (W)w);
2488	if (expect_false (!ev_is_active (w)))	2938	if (expect_false (!ev_is_active (w)))
2489	return;	2939	return;
2490		2940
		2941	EV_FREQUENT_CHECK;
		2942
2491	{	2943	{
2492	int active = ev_active (w);	2944	int active = ev_active (w);
2493		2945
2494	prepares [active - 1] = prepares [--preparecnt];	2946	prepares [active - 1] = prepares [--preparecnt];
2495	ev_active (prepares [active - 1]) = active;	2947	ev_active (prepares [active - 1]) = active;
2496	}	2948	}
2497		2949
2498	ev_stop (EV_A_ (W)w);	2950	ev_stop (EV_A_ (W)w);
		2951
		2952	EV_FREQUENT_CHECK;
2499	}	2953	}
2500		2954
2501	void	2955	void
2502	ev_check_start (EV_P_ ev_check *w)	2956	ev_check_start (EV_P_ ev_check *w)
2503	{	2957	{
2504	if (expect_false (ev_is_active (w)))	2958	if (expect_false (ev_is_active (w)))
2505	return;	2959	return;
		2960
		2961	EV_FREQUENT_CHECK;
2506		2962
2507	ev_start (EV_A_ (W)w, ++checkcnt);	2963	ev_start (EV_A_ (W)w, ++checkcnt);
2508	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	2964	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2509	checks [checkcnt - 1] = w;	2965	checks [checkcnt - 1] = w;
		2966
		2967	EV_FREQUENT_CHECK;
2510	}	2968	}
2511		2969
2512	void	2970	void
2513	ev_check_stop (EV_P_ ev_check *w)	2971	ev_check_stop (EV_P_ ev_check *w)
2514	{	2972	{
2515	clear_pending (EV_A_ (W)w);	2973	clear_pending (EV_A_ (W)w);
2516	if (expect_false (!ev_is_active (w)))	2974	if (expect_false (!ev_is_active (w)))
2517	return;	2975	return;
2518		2976
		2977	EV_FREQUENT_CHECK;
		2978
2519	{	2979	{
2520	int active = ev_active (w);	2980	int active = ev_active (w);
2521		2981
2522	checks [active - 1] = checks [--checkcnt];	2982	checks [active - 1] = checks [--checkcnt];
2523	ev_active (checks [active - 1]) = active;	2983	ev_active (checks [active - 1]) = active;
2524	}	2984	}
2525		2985
2526	ev_stop (EV_A_ (W)w);	2986	ev_stop (EV_A_ (W)w);
		2987
		2988	EV_FREQUENT_CHECK;
2527	}	2989	}
2528		2990
2529	#if EV_EMBED_ENABLE	2991	#if EV_EMBED_ENABLE
2530	void noinline	2992	void noinline
2531	ev_embed_sweep (EV_P_ ev_embed *w)	2993	ev_embed_sweep (EV_P_ ev_embed *w)
…		…
2558	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3020	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2559	}	3021	}
2560	}	3022	}
2561	}	3023	}
2562		3024
		3025	static void
		3026	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3027	{
		3028	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3029
		3030	ev_embed_stop (EV_A_ w);
		3031
		3032	{
		3033	struct ev_loop *loop = w->other;
		3034
		3035	ev_loop_fork (EV_A);
		3036	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3037	}
		3038
		3039	ev_embed_start (EV_A_ w);
		3040	}
		3041
2563	#if 0	3042	#if 0
2564	static void	3043	static void
2565	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3044	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2566	{	3045	{
2567	ev_idle_stop (EV_A_ idle);	3046	ev_idle_stop (EV_A_ idle);
…		…
2574	if (expect_false (ev_is_active (w)))	3053	if (expect_false (ev_is_active (w)))
2575	return;	3054	return;
2576		3055
2577	{	3056	{
2578	struct ev_loop *loop = w->other;	3057	struct ev_loop *loop = w->other;
2579	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3058	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2580	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3059	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2581	}	3060	}
		3061
		3062	EV_FREQUENT_CHECK;
2582		3063
2583	ev_set_priority (&w->io, ev_priority (w));	3064	ev_set_priority (&w->io, ev_priority (w));
2584	ev_io_start (EV_A_ &w->io);	3065	ev_io_start (EV_A_ &w->io);
2585		3066
2586	ev_prepare_init (&w->prepare, embed_prepare_cb);	3067	ev_prepare_init (&w->prepare, embed_prepare_cb);
2587	ev_set_priority (&w->prepare, EV_MINPRI);	3068	ev_set_priority (&w->prepare, EV_MINPRI);
2588	ev_prepare_start (EV_A_ &w->prepare);	3069	ev_prepare_start (EV_A_ &w->prepare);
2589		3070
		3071	ev_fork_init (&w->fork, embed_fork_cb);
		3072	ev_fork_start (EV_A_ &w->fork);
		3073
2590	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3074	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2591		3075
2592	ev_start (EV_A_ (W)w, 1);	3076	ev_start (EV_A_ (W)w, 1);
		3077
		3078	EV_FREQUENT_CHECK;
2593	}	3079	}
2594		3080
2595	void	3081	void
2596	ev_embed_stop (EV_P_ ev_embed *w)	3082	ev_embed_stop (EV_P_ ev_embed *w)
2597	{	3083	{
2598	clear_pending (EV_A_ (W)w);	3084	clear_pending (EV_A_ (W)w);
2599	if (expect_false (!ev_is_active (w)))	3085	if (expect_false (!ev_is_active (w)))
2600	return;	3086	return;
2601		3087
		3088	EV_FREQUENT_CHECK;
		3089
2602	ev_io_stop (EV_A_ &w->io);	3090	ev_io_stop (EV_A_ &w->io);
2603	ev_prepare_stop (EV_A_ &w->prepare);	3091	ev_prepare_stop (EV_A_ &w->prepare);
		3092	ev_fork_stop (EV_A_ &w->fork);
2604		3093
2605	ev_stop (EV_A_ (W)w);	3094	EV_FREQUENT_CHECK;
2606	}	3095	}
2607	#endif	3096	#endif
2608		3097
2609	#if EV_FORK_ENABLE	3098	#if EV_FORK_ENABLE
2610	void	3099	void
2611	ev_fork_start (EV_P_ ev_fork *w)	3100	ev_fork_start (EV_P_ ev_fork *w)
2612	{	3101	{
2613	if (expect_false (ev_is_active (w)))	3102	if (expect_false (ev_is_active (w)))
2614	return;	3103	return;
		3104
		3105	EV_FREQUENT_CHECK;
2615		3106
2616	ev_start (EV_A_ (W)w, ++forkcnt);	3107	ev_start (EV_A_ (W)w, ++forkcnt);
2617	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3108	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2618	forks [forkcnt - 1] = w;	3109	forks [forkcnt - 1] = w;
		3110
		3111	EV_FREQUENT_CHECK;
2619	}	3112	}
2620		3113
2621	void	3114	void
2622	ev_fork_stop (EV_P_ ev_fork *w)	3115	ev_fork_stop (EV_P_ ev_fork *w)
2623	{	3116	{
2624	clear_pending (EV_A_ (W)w);	3117	clear_pending (EV_A_ (W)w);
2625	if (expect_false (!ev_is_active (w)))	3118	if (expect_false (!ev_is_active (w)))
2626	return;	3119	return;
2627		3120
		3121	EV_FREQUENT_CHECK;
		3122
2628	{	3123	{
2629	int active = ev_active (w);	3124	int active = ev_active (w);
2630		3125
2631	forks [active - 1] = forks [--forkcnt];	3126	forks [active - 1] = forks [--forkcnt];
2632	ev_active (forks [active - 1]) = active;	3127	ev_active (forks [active - 1]) = active;
2633	}	3128	}
2634		3129
2635	ev_stop (EV_A_ (W)w);	3130	ev_stop (EV_A_ (W)w);
		3131
		3132	EV_FREQUENT_CHECK;
2636	}	3133	}
2637	#endif	3134	#endif
2638		3135
2639	#if EV_ASYNC_ENABLE	3136	#if EV_ASYNC_ENABLE
2640	void	3137	void
…		…
2642	{	3139	{
2643	if (expect_false (ev_is_active (w)))	3140	if (expect_false (ev_is_active (w)))
2644	return;	3141	return;
2645		3142
2646	evpipe_init (EV_A);	3143	evpipe_init (EV_A);
		3144
		3145	EV_FREQUENT_CHECK;
2647		3146
2648	ev_start (EV_A_ (W)w, ++asynccnt);	3147	ev_start (EV_A_ (W)w, ++asynccnt);
2649	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);	3148	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2650	asyncs [asynccnt - 1] = w;	3149	asyncs [asynccnt - 1] = w;
		3150
		3151	EV_FREQUENT_CHECK;
2651	}	3152	}
2652		3153
2653	void	3154	void
2654	ev_async_stop (EV_P_ ev_async *w)	3155	ev_async_stop (EV_P_ ev_async *w)
2655	{	3156	{
2656	clear_pending (EV_A_ (W)w);	3157	clear_pending (EV_A_ (W)w);
2657	if (expect_false (!ev_is_active (w)))	3158	if (expect_false (!ev_is_active (w)))
2658	return;	3159	return;
2659		3160
		3161	EV_FREQUENT_CHECK;
		3162
2660	{	3163	{
2661	int active = ev_active (w);	3164	int active = ev_active (w);
2662		3165
2663	asyncs [active - 1] = asyncs [--asynccnt];	3166	asyncs [active - 1] = asyncs [--asynccnt];
2664	ev_active (asyncs [active - 1]) = active;	3167	ev_active (asyncs [active - 1]) = active;
2665	}	3168	}
2666		3169
2667	ev_stop (EV_A_ (W)w);	3170	ev_stop (EV_A_ (W)w);
		3171
		3172	EV_FREQUENT_CHECK;
2668	}	3173	}
2669		3174
2670	void	3175	void
2671	ev_async_send (EV_P_ ev_async *w)	3176	ev_async_send (EV_P_ ev_async *w)
2672	{	3177	{
…		…
2689	once_cb (EV_P_ struct ev_once *once, int revents)	3194	once_cb (EV_P_ struct ev_once *once, int revents)
2690	{	3195	{
2691	void (*cb)(int revents, void *arg) = once->cb;	3196	void (*cb)(int revents, void *arg) = once->cb;
2692	void *arg = once->arg;	3197	void *arg = once->arg;
2693		3198
2694	ev_io_stop (EV_A_ &once->io);	3199	ev_io_stop (EV_A_ &once->io);
2695	ev_timer_stop (EV_A_ &once->to);	3200	ev_timer_stop (EV_A_ &once->to);
2696	ev_free (once);	3201	ev_free (once);
2697		3202
2698	cb (revents, arg);	3203	cb (revents, arg);
2699	}	3204	}
2700		3205
2701	static void	3206	static void
2702	once_cb_io (EV_P_ ev_io *w, int revents)	3207	once_cb_io (EV_P_ ev_io *w, int revents)
2703	{	3208	{
2704	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3209	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3210
		3211	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2705	}	3212	}
2706		3213
2707	static void	3214	static void
2708	once_cb_to (EV_P_ ev_timer *w, int revents)	3215	once_cb_to (EV_P_ ev_timer *w, int revents)
2709	{	3216	{
2710	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3217	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3218
		3219	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2711	}	3220	}
2712		3221
2713	void	3222	void
2714	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3223	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2715	{	3224	{
…		…
2737	ev_timer_set (&once->to, timeout, 0.);	3246	ev_timer_set (&once->to, timeout, 0.);
2738	ev_timer_start (EV_A_ &once->to);	3247	ev_timer_start (EV_A_ &once->to);
2739	}	3248	}
2740	}	3249	}
2741		3250
		3251	/*****************************************************************************/
		3252
		3253	#if EV_WALK_ENABLE
		3254	void
		3255	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3256	{
		3257	int i, j;
		3258	ev_watcher_list *wl, *wn;
		3259
		3260	if (types & (EV_IO | EV_EMBED))
		3261	for (i = 0; i < anfdmax; ++i)
		3262	for (wl = anfds [i].head; wl; )
		3263	{
		3264	wn = wl->next;
		3265
		3266	#if EV_EMBED_ENABLE
		3267	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3268	{
		3269	if (types & EV_EMBED)
		3270	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3271	}
		3272	else
		3273	#endif
		3274	#if EV_USE_INOTIFY
		3275	if (ev_cb ((ev_io *)wl) == infy_cb)
		3276	;
		3277	else
		3278	#endif
		3279	if ((ev_io *)wl != &pipe_w)
		3280	if (types & EV_IO)
		3281	cb (EV_A_ EV_IO, wl);
		3282
		3283	wl = wn;
		3284	}
		3285
		3286	if (types & (EV_TIMER | EV_STAT))
		3287	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3288	#if EV_STAT_ENABLE
		3289	/*TODO: timer is not always active*/
		3290	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3291	{
		3292	if (types & EV_STAT)
		3293	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3294	}
		3295	else
		3296	#endif
		3297	if (types & EV_TIMER)
		3298	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3299
		3300	#if EV_PERIODIC_ENABLE
		3301	if (types & EV_PERIODIC)
		3302	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3303	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3304	#endif
		3305
		3306	#if EV_IDLE_ENABLE
		3307	if (types & EV_IDLE)
		3308	for (j = NUMPRI; i--; )
		3309	for (i = idlecnt [j]; i--; )
		3310	cb (EV_A_ EV_IDLE, idles [j][i]);
		3311	#endif
		3312
		3313	#if EV_FORK_ENABLE
		3314	if (types & EV_FORK)
		3315	for (i = forkcnt; i--; )
		3316	if (ev_cb (forks [i]) != embed_fork_cb)
		3317	cb (EV_A_ EV_FORK, forks [i]);
		3318	#endif
		3319
		3320	#if EV_ASYNC_ENABLE
		3321	if (types & EV_ASYNC)
		3322	for (i = asynccnt; i--; )
		3323	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3324	#endif
		3325
		3326	if (types & EV_PREPARE)
		3327	for (i = preparecnt; i--; )
		3328	#if EV_EMBED_ENABLE
		3329	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3330	#endif
		3331	cb (EV_A_ EV_PREPARE, prepares [i]);
		3332
		3333	if (types & EV_CHECK)
		3334	for (i = checkcnt; i--; )
		3335	cb (EV_A_ EV_CHECK, checks [i]);
		3336
		3337	if (types & EV_SIGNAL)
		3338	for (i = 0; i < signalmax; ++i)
		3339	for (wl = signals [i].head; wl; )
		3340	{
		3341	wn = wl->next;
		3342	cb (EV_A_ EV_SIGNAL, wl);
		3343	wl = wn;
		3344	}
		3345
		3346	if (types & EV_CHILD)
		3347	for (i = EV_PID_HASHSIZE; i--; )
		3348	for (wl = childs [i]; wl; )
		3349	{
		3350	wn = wl->next;
		3351	cb (EV_A_ EV_CHILD, wl);
		3352	wl = wn;
		3353	}
		3354	/* EV_STAT 0x00001000 /* stat data changed */
		3355	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3356	}
		3357	#endif
		3358
2742	#if EV_MULTIPLICITY	3359	#if EV_MULTIPLICITY
2743	#include "ev_wrap.h"	3360	#include "ev_wrap.h"
2744	#endif	3361	#endif
2745		3362
2746	#ifdef __cplusplus	3363	#ifdef __cplusplus

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