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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 1.290 by root, Mon Jun 29 04:41:34 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
240	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	289	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
241		290
242	#ifndef CLOCK_MONOTONIC	291	#ifndef CLOCK_MONOTONIC
243	# undef EV_USE_MONOTONIC	292	# undef EV_USE_MONOTONIC
244	# define EV_USE_MONOTONIC 0	293	# define EV_USE_MONOTONIC 0
…		…
259	# include <sys/select.h>	308	# include <sys/select.h>
260	# endif	309	# endif
261	#endif	310	#endif
262		311
263	#if EV_USE_INOTIFY	312	#if EV_USE_INOTIFY
		313	# include <sys/utsname.h>
		314	# include <sys/statfs.h>
264	# include <sys/inotify.h>	315	# include <sys/inotify.h>
		316	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
		317	# ifndef IN_DONT_FOLLOW
		318	# undef EV_USE_INOTIFY
		319	# define EV_USE_INOTIFY 0
		320	# endif
265	#endif	321	#endif
266		322
267	#if EV_SELECT_IS_WINSOCKET	323	#if EV_SELECT_IS_WINSOCKET
268	# include <winsock.h>	324	# include <winsock.h>
		325	#endif
		326
		327	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		328	/* which makes programs even slower. might work on other unices, too. */
		329	#if EV_USE_CLOCK_SYSCALL
		330	# include <syscall.h>
		331	# ifdef SYS_clock_gettime
		332	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		333	# undef EV_USE_MONOTONIC
		334	# define EV_USE_MONOTONIC 1
		335	# else
		336	# undef EV_USE_CLOCK_SYSCALL
		337	# define EV_USE_CLOCK_SYSCALL 0
		338	# endif
269	#endif	339	#endif
270		340
271	#if EV_USE_EVENTFD	341	#if EV_USE_EVENTFD
272	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	342	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
273	# include <stdint.h>	343	# include <stdint.h>
…		…
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
…		…
460		568
461	ev_tstamp	569	ev_tstamp
462	ev_time (void)	570	ev_time (void)
463	{	571	{
464	#if EV_USE_REALTIME	572	#if EV_USE_REALTIME
		573	if (expect_true (have_realtime))
		574	{
465	struct timespec ts;	575	struct timespec ts;
466	clock_gettime (CLOCK_REALTIME, &ts);	576	clock_gettime (CLOCK_REALTIME, &ts);
467	return ts.tv_sec + ts.tv_nsec * 1e-9;	577	return ts.tv_sec + ts.tv_nsec * 1e-9;
468	#else	578	}
		579	#endif
		580
469	struct timeval tv;	581	struct timeval tv;
470	gettimeofday (&tv, 0);	582	gettimeofday (&tv, 0);
471	return tv.tv_sec + tv.tv_usec * 1e-6;	583	return tv.tv_sec + tv.tv_usec * 1e-6;
472	#endif
473	}	584	}
474		585
475	ev_tstamp inline_size	586	inline_size ev_tstamp
476	get_clock (void)	587	get_clock (void)
477	{	588	{
478	#if EV_USE_MONOTONIC	589	#if EV_USE_MONOTONIC
479	if (expect_true (have_monotonic))	590	if (expect_true (have_monotonic))
480	{	591	{
…		…
513	struct timeval tv;	624	struct timeval tv;
514		625
515	tv.tv_sec = (time_t)delay;	626	tv.tv_sec = (time_t)delay;
516	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	627	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
517		628
		629	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		630	/* somehting nto guaranteed by newer posix versions, but guaranteed */
		631	/* by older ones */
518	select (0, 0, 0, 0, &tv);	632	select (0, 0, 0, 0, &tv);
519	#endif	633	#endif
520	}	634	}
521	}	635	}
522		636
523	/*****************************************************************************/	637	/*****************************************************************************/
524		638
525	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	639	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
526		640
527	int inline_size	641	/* find a suitable new size for the given array, */
		642	/* hopefully by rounding to a ncie-to-malloc size */
		643	inline_size int
528	array_nextsize (int elem, int cur, int cnt)	644	array_nextsize (int elem, int cur, int cnt)
529	{	645	{
530	int ncur = cur + 1;	646	int ncur = cur + 1;
531		647
532	do	648	do
…		…
549	array_realloc (int elem, void *base, int *cur, int cnt)	665	array_realloc (int elem, void *base, int *cur, int cnt)
550	{	666	{
551	*cur = array_nextsize (elem, *cur, cnt);	667	*cur = array_nextsize (elem, *cur, cnt);
552	return ev_realloc (base, elem * *cur);	668	return ev_realloc (base, elem * *cur);
553	}	669	}
		670
		671	#define array_init_zero(base,count) \
		672	memset ((void *)(base), 0, sizeof (*(base)) * (count))
554		673
555	#define array_needsize(type,base,cur,cnt,init) \	674	#define array_needsize(type,base,cur,cnt,init) \
556	if (expect_false ((cnt) > (cur))) \	675	if (expect_false ((cnt) > (cur))) \
557	{ \	676	{ \
558	int ocur_ = (cur); \	677	int ocur_ = (cur); \
…		…
570	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	689	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
571	}	690	}
572	#endif	691	#endif
573		692
574	#define array_free(stem, idx) \	693	#define array_free(stem, idx) \
575	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	694	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
576		695
577	/*****************************************************************************/	696	/*****************************************************************************/
		697
		698	/* dummy callback for pending events */
		699	static void noinline
		700	pendingcb (EV_P_ ev_prepare *w, int revents)
		701	{
		702	}
578		703
579	void noinline	704	void noinline
580	ev_feed_event (EV_P_ void *w, int revents)	705	ev_feed_event (EV_P_ void *w, int revents)
581	{	706	{
582	W w_ = (W)w;	707	W w_ = (W)w;
…		…
591	pendings [pri][w_->pending - 1].w = w_;	716	pendings [pri][w_->pending - 1].w = w_;
592	pendings [pri][w_->pending - 1].events = revents;	717	pendings [pri][w_->pending - 1].events = revents;
593	}	718	}
594	}	719	}
595		720
596	void inline_speed	721	inline_speed void
		722	feed_reverse (EV_P_ W w)
		723	{
		724	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		725	rfeeds [rfeedcnt++] = w;
		726	}
		727
		728	inline_size void
		729	feed_reverse_done (EV_P_ int revents)
		730	{
		731	do
		732	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		733	while (rfeedcnt);
		734	}
		735
		736	inline_speed void
597	queue_events (EV_P_ W *events, int eventcnt, int type)	737	queue_events (EV_P_ W *events, int eventcnt, int type)
598	{	738	{
599	int i;	739	int i;
600		740
601	for (i = 0; i < eventcnt; ++i)	741	for (i = 0; i < eventcnt; ++i)
602	ev_feed_event (EV_A_ events [i], type);	742	ev_feed_event (EV_A_ events [i], type);
603	}	743	}
604		744
605	/*****************************************************************************/	745	/*****************************************************************************/
606		746
607	void inline_size	747	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)	748	fd_event (EV_P_ int fd, int revents)
622	{	749	{
623	ANFD *anfd = anfds + fd;	750	ANFD *anfd = anfds + fd;
624	ev_io *w;	751	ev_io *w;
625		752
…		…
637	{	764	{
638	if (fd >= 0 && fd < anfdmax)	765	if (fd >= 0 && fd < anfdmax)
639	fd_event (EV_A_ fd, revents);	766	fd_event (EV_A_ fd, revents);
640	}	767	}
641		768
642	void inline_size	769	/* make sure the external fd watch events are in-sync */
		770	/* with the kernel/libev internal state */
		771	inline_size void
643	fd_reify (EV_P)	772	fd_reify (EV_P)
644	{	773	{
645	int i;	774	int i;
646		775
647	for (i = 0; i < fdchangecnt; ++i)	776	for (i = 0; i < fdchangecnt; ++i)
…		…
656	events |= (unsigned char)w->events;	785	events |= (unsigned char)w->events;
657		786
658	#if EV_SELECT_IS_WINSOCKET	787	#if EV_SELECT_IS_WINSOCKET
659	if (events)	788	if (events)
660	{	789	{
661	unsigned long argp;	790	unsigned long arg;
662	#ifdef EV_FD_TO_WIN32_HANDLE	791	#ifdef EV_FD_TO_WIN32_HANDLE
663	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	792	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
664	#else	793	#else
665	anfd->handle = _get_osfhandle (fd);	794	anfd->handle = _get_osfhandle (fd);
666	#endif	795	#endif
667	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	796	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
668	}	797	}
669	#endif	798	#endif
670		799
671	{	800	{
672	unsigned char o_events = anfd->events;	801	unsigned char o_events = anfd->events;
673	unsigned char o_reify = anfd->reify;	802	unsigned char o_reify = anfd->reify;
674		803
675	anfd->reify = 0;	804	anfd->reify = 0;
676	anfd->events = events;	805	anfd->events = events;
677		806
678	if (o_events != events || o_reify & EV_IOFDSET)	807	if (o_events != events || o_reify & EV__IOFDSET)
679	backend_modify (EV_A_ fd, o_events, events);	808	backend_modify (EV_A_ fd, o_events, events);
680	}	809	}
681	}	810	}
682		811
683	fdchangecnt = 0;	812	fdchangecnt = 0;
684	}	813	}
685		814
686	void inline_size	815	/* something about the given fd changed */
		816	inline_size void
687	fd_change (EV_P_ int fd, int flags)	817	fd_change (EV_P_ int fd, int flags)
688	{	818	{
689	unsigned char reify = anfds [fd].reify;	819	unsigned char reify = anfds [fd].reify;
690	anfds [fd].reify |= flags;	820	anfds [fd].reify |= flags;
691		821
…		…
695	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	825	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
696	fdchanges [fdchangecnt - 1] = fd;	826	fdchanges [fdchangecnt - 1] = fd;
697	}	827	}
698	}	828	}
699		829
700	void inline_speed	830	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		831	inline_speed void
701	fd_kill (EV_P_ int fd)	832	fd_kill (EV_P_ int fd)
702	{	833	{
703	ev_io *w;	834	ev_io *w;
704		835
705	while ((w = (ev_io *)anfds [fd].head))	836	while ((w = (ev_io *)anfds [fd].head))
…		…
707	ev_io_stop (EV_A_ w);	838	ev_io_stop (EV_A_ w);
708	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	839	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
709	}	840	}
710	}	841	}
711		842
712	int inline_size	843	/* check whether the given fd is atcually valid, for error recovery */
		844	inline_size int
713	fd_valid (int fd)	845	fd_valid (int fd)
714	{	846	{
715	#ifdef _WIN32	847	#ifdef _WIN32
716	return _get_osfhandle (fd) != -1;	848	return _get_osfhandle (fd) != -1;
717	#else	849	#else
…		…
725	{	857	{
726	int fd;	858	int fd;
727		859
728	for (fd = 0; fd < anfdmax; ++fd)	860	for (fd = 0; fd < anfdmax; ++fd)
729	if (anfds [fd].events)	861	if (anfds [fd].events)
730	if (!fd_valid (fd) == -1 && errno == EBADF)	862	if (!fd_valid (fd) && errno == EBADF)
731	fd_kill (EV_A_ fd);	863	fd_kill (EV_A_ fd);
732	}	864	}
733		865
734	/* called on ENOMEM in select/poll to kill some fds and retry */	866	/* called on ENOMEM in select/poll to kill some fds and retry */
735	static void noinline	867	static void noinline
…		…
753		885
754	for (fd = 0; fd < anfdmax; ++fd)	886	for (fd = 0; fd < anfdmax; ++fd)
755	if (anfds [fd].events)	887	if (anfds [fd].events)
756	{	888	{
757	anfds [fd].events = 0;	889	anfds [fd].events = 0;
		890	anfds [fd].emask = 0;
758	fd_change (EV_A_ fd, EV_IOFDSET | 1);	891	fd_change (EV_A_ fd, EV__IOFDSET | 1);
759	}	892	}
760	}	893	}
761		894
762	/*****************************************************************************/	895	/*****************************************************************************/
		896
		897	/*
		898	* the heap functions want a real array index. array index 0 uis guaranteed to not
		899	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
		900	* the branching factor of the d-tree.
		901	*/
763		902
764	/*	903	/*
765	* at the moment we allow libev the luxury of two heaps,	904	* 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	905	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
767	* which is more cache-efficient.	906	* which is more cache-efficient.
768	* the difference is about 5% with 50000+ watchers.	907	* the difference is about 5% with 50000+ watchers.
769	*/	908	*/
770	#define USE_4HEAP !EV_MINIMAL
771	#define USE_4HEAP 1/* they do not work corretcly */
772	#if USE_4HEAP	909	#if EV_USE_4HEAP
773		910
774	#define DHEAP 4	911	#define DHEAP 4
775	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	912	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		913	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
		914	#define UPHEAP_DONE(p,k) ((p) == (k))
776		915
777	/* towards the root */	916	/* away from the root */
778	void inline_speed	917	inline_speed void
779	upheap (WT *heap, int k)	918	downheap (ANHE *heap, int N, int k)
780	{	919	{
781	WT w = heap [k];	920	ANHE he = heap [k];
		921	ANHE *E = heap + N + HEAP0;
782		922
783	for (;;)	923	for (;;)
784	{	924	{
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;	925	ev_tstamp minat;
809	WT *minpos;	926	ANHE *minpos;
810	WT *pos = heap + DHEAP * (k - HEAP0) + HEAP0;	927	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
811		928
812	// find minimum child	929	/* find minimum child */
813	if (expect_true (pos + DHEAP - 1 < E))	930	if (expect_true (pos + DHEAP - 1 < E))
814	{	931	{
815	/* fast path */
816	(minpos = pos + 0), (minat = (*minpos)->at);	932	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
817	if (pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at);	933	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);	934	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);	935	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		936	}
		937	else if (pos < E)
		938	{
		939	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		940	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		941	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		942	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
820	}	943	}
821	else	944	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;	945	break;
834		946
835	ev_active (*minpos) = k;	947	if (ANHE_at (he) <= minat)
		948	break;
		949
836	heap [k] = *minpos;	950	heap [k] = *minpos;
		951	ev_active (ANHE_w (*minpos)) = k;
837		952
838	k = minpos - heap;	953	k = minpos - heap;
839	}	954	}
840		955
841	heap [k] = w;	956	heap [k] = he;
842	ev_active (heap [k]) = k;	957	ev_active (ANHE_w (he)) = k;
843	}	958	}
844		959
845	#else // 4HEAP	960	#else /* 4HEAP */
846		961
847	#define HEAP0 1	962	#define HEAP0 1
		963	#define HPARENT(k) ((k) >> 1)
		964	#define UPHEAP_DONE(p,k) (!(p))
848		965
849	/* towards the root */	966	/* away from the root */
850	void inline_speed	967	inline_speed void
851	upheap (WT *heap, int k)	968	downheap (ANHE *heap, int N, int k)
852	{	969	{
853	WT w = heap [k];	970	ANHE he = heap [k];
854		971
855	for (;;)	972	for (;;)
856	{	973	{
857	int p = k >> 1;	974	int c = k << 1;
858		975
859	/* maybe we could use a dummy element at heap [0]? */	976	if (c > N + HEAP0 - 1)
860	if (!p || heap [p]->at <= w->at)
861	break;	977	break;
862		978
863	heap [k] = heap [p];	979	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
864	ev_active (heap [k]) = k;	980	? 1 : 0;
865	k = p;
866	}
867		981
868	heap [k] = w;	982	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;	983	break;
884		984
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];	985	heap [k] = heap [c];
892	((W)heap [k])->active = k;	986	ev_active (ANHE_w (heap [k])) = k;
893		987
894	k = c;	988	k = c;
895	}	989	}
896		990
897	heap [k] = w;	991	heap [k] = he;
		992	ev_active (ANHE_w (he)) = k;
		993	}
		994	#endif
		995
		996	/* towards the root */
		997	inline_speed void
		998	upheap (ANHE *heap, int k)
		999	{
		1000	ANHE he = heap [k];
		1001
		1002	for (;;)
		1003	{
		1004	int p = HPARENT (k);
		1005
		1006	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		1007	break;
		1008
		1009	heap [k] = heap [p];
898	ev_active (heap [k]) = k;	1010	ev_active (ANHE_w (heap [k])) = k;
899	}	1011	k = p;
900	#endif	1012	}
901		1013
902	void inline_size	1014	heap [k] = he;
		1015	ev_active (ANHE_w (he)) = k;
		1016	}
		1017
		1018	/* move an element suitably so it is in a correct place */
		1019	inline_size void
903	adjustheap (WT *heap, int N, int k)	1020	adjustheap (ANHE *heap, int N, int k)
904	{	1021	{
		1022	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
905	upheap (heap, k);	1023	upheap (heap, k);
		1024	else
906	downheap (heap, N, k);	1025	downheap (heap, N, k);
		1026	}
		1027
		1028	/* rebuild the heap: this function is used only once and executed rarely */
		1029	inline_size void
		1030	reheap (ANHE *heap, int N)
		1031	{
		1032	int i;
		1033
		1034	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		1035	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		1036	for (i = 0; i < N; ++i)
		1037	upheap (heap, i + HEAP0);
907	}	1038	}
908		1039
909	/*****************************************************************************/	1040	/*****************************************************************************/
910		1041
		1042	/* associate signal watchers to a signal signal */
911	typedef struct	1043	typedef struct
912	{	1044	{
913	WL head;	1045	WL head;
914	EV_ATOMIC_T gotsig;	1046	EV_ATOMIC_T gotsig;
915	} ANSIG;	1047	} ANSIG;
…		…
917	static ANSIG *signals;	1049	static ANSIG *signals;
918	static int signalmax;	1050	static int signalmax;
919		1051
920	static EV_ATOMIC_T gotsig;	1052	static EV_ATOMIC_T gotsig;
921		1053
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	/*****************************************************************************/	1054	/*****************************************************************************/
935		1055
936	void inline_speed	1056	/* used to prepare libev internal fd's */
		1057	/* this is not fork-safe */
		1058	inline_speed void
937	fd_intern (int fd)	1059	fd_intern (int fd)
938	{	1060	{
939	#ifdef _WIN32	1061	#ifdef _WIN32
940	int arg = 1;	1062	unsigned long arg = 1;
941	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1063	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
942	#else	1064	#else
943	fcntl (fd, F_SETFD, FD_CLOEXEC);	1065	fcntl (fd, F_SETFD, FD_CLOEXEC);
944	fcntl (fd, F_SETFL, O_NONBLOCK);	1066	fcntl (fd, F_SETFL, O_NONBLOCK);
945	#endif	1067	#endif
946	}	1068	}
947		1069
948	static void noinline	1070	static void noinline
949	evpipe_init (EV_P)	1071	evpipe_init (EV_P)
950	{	1072	{
951	if (!ev_is_active (&pipeev))	1073	if (!ev_is_active (&pipe_w))
952	{	1074	{
953	#if EV_USE_EVENTFD	1075	#if EV_USE_EVENTFD
954	if ((evfd = eventfd (0, 0)) >= 0)	1076	if ((evfd = eventfd (0, 0)) >= 0)
955	{	1077	{
956	evpipe [0] = -1;	1078	evpipe [0] = -1;
957	fd_intern (evfd);	1079	fd_intern (evfd);
958	ev_io_set (&pipeev, evfd, EV_READ);	1080	ev_io_set (&pipe_w, evfd, EV_READ);
959	}	1081	}
960	else	1082	else
961	#endif	1083	#endif
962	{	1084	{
963	while (pipe (evpipe))	1085	while (pipe (evpipe))
964	syserr ("(libev) error creating signal/async pipe");	1086	ev_syserr ("(libev) error creating signal/async pipe");
965		1087
966	fd_intern (evpipe [0]);	1088	fd_intern (evpipe [0]);
967	fd_intern (evpipe [1]);	1089	fd_intern (evpipe [1]);
968	ev_io_set (&pipeev, evpipe [0], EV_READ);	1090	ev_io_set (&pipe_w, evpipe [0], EV_READ);
969	}	1091	}
970		1092
971	ev_io_start (EV_A_ &pipeev);	1093	ev_io_start (EV_A_ &pipe_w);
972	ev_unref (EV_A); /* watcher should not keep loop alive */	1094	ev_unref (EV_A); /* watcher should not keep loop alive */
973	}	1095	}
974	}	1096	}
975		1097
976	void inline_size	1098	inline_size void
977	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1099	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
978	{	1100	{
979	if (!*flag)	1101	if (!*flag)
980	{	1102	{
981	int old_errno = errno; /* save errno because write might clobber it */	1103	int old_errno = errno; /* save errno because write might clobber it */
…		…
994		1116
995	errno = old_errno;	1117	errno = old_errno;
996	}	1118	}
997	}	1119	}
998		1120
		1121	/* called whenever the libev signal pipe */
		1122	/* got some events (signal, async) */
999	static void	1123	static void
1000	pipecb (EV_P_ ev_io *iow, int revents)	1124	pipecb (EV_P_ ev_io *iow, int revents)
1001	{	1125	{
1002	#if EV_USE_EVENTFD	1126	#if EV_USE_EVENTFD
1003	if (evfd >= 0)	1127	if (evfd >= 0)
…		…
1059	ev_feed_signal_event (EV_P_ int signum)	1183	ev_feed_signal_event (EV_P_ int signum)
1060	{	1184	{
1061	WL w;	1185	WL w;
1062		1186
1063	#if EV_MULTIPLICITY	1187	#if EV_MULTIPLICITY
1064	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1188	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1065	#endif	1189	#endif
1066		1190
1067	--signum;	1191	--signum;
1068		1192
1069	if (signum < 0 || signum >= signalmax)	1193	if (signum < 0 || signum >= signalmax)
…		…
1085		1209
1086	#ifndef WIFCONTINUED	1210	#ifndef WIFCONTINUED
1087	# define WIFCONTINUED(status) 0	1211	# define WIFCONTINUED(status) 0
1088	#endif	1212	#endif
1089		1213
1090	void inline_speed	1214	/* handle a single child status event */
		1215	inline_speed void
1091	child_reap (EV_P_ int chain, int pid, int status)	1216	child_reap (EV_P_ int chain, int pid, int status)
1092	{	1217	{
1093	ev_child *w;	1218	ev_child *w;
1094	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1219	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1095		1220
…		…
1108		1233
1109	#ifndef WCONTINUED	1234	#ifndef WCONTINUED
1110	# define WCONTINUED 0	1235	# define WCONTINUED 0
1111	#endif	1236	#endif
1112		1237
		1238	/* called on sigchld etc., calls waitpid */
1113	static void	1239	static void
1114	childcb (EV_P_ ev_signal *sw, int revents)	1240	childcb (EV_P_ ev_signal *sw, int revents)
1115	{	1241	{
1116	int pid, status;	1242	int pid, status;
1117		1243
…		…
1198	/* kqueue is borked on everything but netbsd apparently */	1324	/* kqueue is borked on everything but netbsd apparently */
1199	/* it usually doesn't work correctly on anything but sockets and pipes */	1325	/* it usually doesn't work correctly on anything but sockets and pipes */
1200	flags &= ~EVBACKEND_KQUEUE;	1326	flags &= ~EVBACKEND_KQUEUE;
1201	#endif	1327	#endif
1202	#ifdef __APPLE__	1328	#ifdef __APPLE__
1203	// flags &= ~EVBACKEND_KQUEUE; for documentation	1329	/* only select works correctly on that "unix-certified" platform */
1204	flags &= ~EVBACKEND_POLL;	1330	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1331	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1205	#endif	1332	#endif
1206		1333
1207	return flags;	1334	return flags;
1208	}	1335	}
1209		1336
…		…
1241	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1368	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1242	{	1369	{
1243	timeout_blocktime = interval;	1370	timeout_blocktime = interval;
1244	}	1371	}
1245		1372
		1373	/* initialise a loop structure, must be zero-initialised */
1246	static void noinline	1374	static void noinline
1247	loop_init (EV_P_ unsigned int flags)	1375	loop_init (EV_P_ unsigned int flags)
1248	{	1376	{
1249	if (!backend)	1377	if (!backend)
1250	{	1378	{
		1379	#if EV_USE_REALTIME
		1380	if (!have_realtime)
		1381	{
		1382	struct timespec ts;
		1383
		1384	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1385	have_realtime = 1;
		1386	}
		1387	#endif
		1388
1251	#if EV_USE_MONOTONIC	1389	#if EV_USE_MONOTONIC
		1390	if (!have_monotonic)
1252	{	1391	{
1253	struct timespec ts;	1392	struct timespec ts;
		1393
1254	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1394	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1255	have_monotonic = 1;	1395	have_monotonic = 1;
1256	}	1396	}
1257	#endif	1397	#endif
1258		1398
1259	ev_rt_now = ev_time ();	1399	ev_rt_now = ev_time ();
1260	mn_now = get_clock ();	1400	mn_now = get_clock ();
1261	now_floor = mn_now;	1401	now_floor = mn_now;
…		…
1298	#endif	1438	#endif
1299	#if EV_USE_SELECT	1439	#if EV_USE_SELECT
1300	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1440	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1301	#endif	1441	#endif
1302		1442
		1443	ev_prepare_init (&pending_w, pendingcb);
		1444
1303	ev_init (&pipeev, pipecb);	1445	ev_init (&pipe_w, pipecb);
1304	ev_set_priority (&pipeev, EV_MAXPRI);	1446	ev_set_priority (&pipe_w, EV_MAXPRI);
1305	}	1447	}
1306	}	1448	}
1307		1449
		1450	/* free up a loop structure */
1308	static void noinline	1451	static void noinline
1309	loop_destroy (EV_P)	1452	loop_destroy (EV_P)
1310	{	1453	{
1311	int i;	1454	int i;
1312		1455
1313	if (ev_is_active (&pipeev))	1456	if (ev_is_active (&pipe_w))
1314	{	1457	{
1315	ev_ref (EV_A); /* signal watcher */	1458	ev_ref (EV_A); /* signal watcher */
1316	ev_io_stop (EV_A_ &pipeev);	1459	ev_io_stop (EV_A_ &pipe_w);
1317		1460
1318	#if EV_USE_EVENTFD	1461	#if EV_USE_EVENTFD
1319	if (evfd >= 0)	1462	if (evfd >= 0)
1320	close (evfd);	1463	close (evfd);
1321	#endif	1464	#endif
…		…
1360	}	1503	}
1361		1504
1362	ev_free (anfds); anfdmax = 0;	1505	ev_free (anfds); anfdmax = 0;
1363		1506
1364	/* have to use the microsoft-never-gets-it-right macro */	1507	/* have to use the microsoft-never-gets-it-right macro */
		1508	array_free (rfeed, EMPTY);
1365	array_free (fdchange, EMPTY);	1509	array_free (fdchange, EMPTY);
1366	array_free (timer, EMPTY);	1510	array_free (timer, EMPTY);
1367	#if EV_PERIODIC_ENABLE	1511	#if EV_PERIODIC_ENABLE
1368	array_free (periodic, EMPTY);	1512	array_free (periodic, EMPTY);
1369	#endif	1513	#endif
…		…
1378		1522
1379	backend = 0;	1523	backend = 0;
1380	}	1524	}
1381		1525
1382	#if EV_USE_INOTIFY	1526	#if EV_USE_INOTIFY
1383	void inline_size infy_fork (EV_P);	1527	inline_size void infy_fork (EV_P);
1384	#endif	1528	#endif
1385		1529
1386	void inline_size	1530	inline_size void
1387	loop_fork (EV_P)	1531	loop_fork (EV_P)
1388	{	1532	{
1389	#if EV_USE_PORT	1533	#if EV_USE_PORT
1390	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1534	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1391	#endif	1535	#endif
…		…
1397	#endif	1541	#endif
1398	#if EV_USE_INOTIFY	1542	#if EV_USE_INOTIFY
1399	infy_fork (EV_A);	1543	infy_fork (EV_A);
1400	#endif	1544	#endif
1401		1545
1402	if (ev_is_active (&pipeev))	1546	if (ev_is_active (&pipe_w))
1403	{	1547	{
1404	/* this "locks" the handlers against writing to the pipe */	1548	/* this "locks" the handlers against writing to the pipe */
1405	/* while we modify the fd vars */	1549	/* while we modify the fd vars */
1406	gotsig = 1;	1550	gotsig = 1;
1407	#if EV_ASYNC_ENABLE	1551	#if EV_ASYNC_ENABLE
1408	gotasync = 1;	1552	gotasync = 1;
1409	#endif	1553	#endif
1410		1554
1411	ev_ref (EV_A);	1555	ev_ref (EV_A);
1412	ev_io_stop (EV_A_ &pipeev);	1556	ev_io_stop (EV_A_ &pipe_w);
1413		1557
1414	#if EV_USE_EVENTFD	1558	#if EV_USE_EVENTFD
1415	if (evfd >= 0)	1559	if (evfd >= 0)
1416	close (evfd);	1560	close (evfd);
1417	#endif	1561	#endif
…		…
1422	close (evpipe [1]);	1566	close (evpipe [1]);
1423	}	1567	}
1424		1568
1425	evpipe_init (EV_A);	1569	evpipe_init (EV_A);
1426	/* now iterate over everything, in case we missed something */	1570	/* now iterate over everything, in case we missed something */
1427	pipecb (EV_A_ &pipeev, EV_READ);	1571	pipecb (EV_A_ &pipe_w, EV_READ);
1428	}	1572	}
1429		1573
1430	postfork = 0;	1574	postfork = 0;
1431	}	1575	}
1432		1576
1433	#if EV_MULTIPLICITY	1577	#if EV_MULTIPLICITY
		1578
1434	struct ev_loop *	1579	struct ev_loop *
1435	ev_loop_new (unsigned int flags)	1580	ev_loop_new (unsigned int flags)
1436	{	1581	{
1437	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1582	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1438		1583
…		…
1456	void	1601	void
1457	ev_loop_fork (EV_P)	1602	ev_loop_fork (EV_P)
1458	{	1603	{
1459	postfork = 1; /* must be in line with ev_default_fork */	1604	postfork = 1; /* must be in line with ev_default_fork */
1460	}	1605	}
		1606
		1607	#if EV_VERIFY
		1608	static void noinline
		1609	verify_watcher (EV_P_ W w)
		1610	{
		1611	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1612
		1613	if (w->pending)
		1614	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1615	}
		1616
		1617	static void noinline
		1618	verify_heap (EV_P_ ANHE *heap, int N)
		1619	{
		1620	int i;
		1621
		1622	for (i = HEAP0; i < N + HEAP0; ++i)
		1623	{
		1624	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1625	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1626	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1627
		1628	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1629	}
		1630	}
		1631
		1632	static void noinline
		1633	array_verify (EV_P_ W *ws, int cnt)
		1634	{
		1635	while (cnt--)
		1636	{
		1637	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1638	verify_watcher (EV_A_ ws [cnt]);
		1639	}
		1640	}
		1641	#endif
		1642
		1643	void
		1644	ev_loop_verify (EV_P)
		1645	{
		1646	#if EV_VERIFY
		1647	int i;
		1648	WL w;
		1649
		1650	assert (activecnt >= -1);
		1651
		1652	assert (fdchangemax >= fdchangecnt);
		1653	for (i = 0; i < fdchangecnt; ++i)
		1654	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1655
		1656	assert (anfdmax >= 0);
		1657	for (i = 0; i < anfdmax; ++i)
		1658	for (w = anfds [i].head; w; w = w->next)
		1659	{
		1660	verify_watcher (EV_A_ (W)w);
		1661	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1662	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1663	}
		1664
		1665	assert (timermax >= timercnt);
		1666	verify_heap (EV_A_ timers, timercnt);
		1667
		1668	#if EV_PERIODIC_ENABLE
		1669	assert (periodicmax >= periodiccnt);
		1670	verify_heap (EV_A_ periodics, periodiccnt);
		1671	#endif
		1672
		1673	for (i = NUMPRI; i--; )
		1674	{
		1675	assert (pendingmax [i] >= pendingcnt [i]);
		1676	#if EV_IDLE_ENABLE
		1677	assert (idleall >= 0);
		1678	assert (idlemax [i] >= idlecnt [i]);
		1679	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		1680	#endif
		1681	}
		1682
		1683	#if EV_FORK_ENABLE
		1684	assert (forkmax >= forkcnt);
		1685	array_verify (EV_A_ (W *)forks, forkcnt);
		1686	#endif
		1687
		1688	#if EV_ASYNC_ENABLE
		1689	assert (asyncmax >= asynccnt);
		1690	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1691	#endif
		1692
		1693	assert (preparemax >= preparecnt);
		1694	array_verify (EV_A_ (W *)prepares, preparecnt);
		1695
		1696	assert (checkmax >= checkcnt);
		1697	array_verify (EV_A_ (W *)checks, checkcnt);
		1698
		1699	# if 0
		1700	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1701	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1461	#endif	1702	# endif
		1703	#endif
		1704	}
		1705
		1706	#endif /* multiplicity */
1462		1707
1463	#if EV_MULTIPLICITY	1708	#if EV_MULTIPLICITY
1464	struct ev_loop *	1709	struct ev_loop *
1465	ev_default_loop_init (unsigned int flags)	1710	ev_default_loop_init (unsigned int flags)
1466	#else	1711	#else
…		…
1499	{	1744	{
1500	#if EV_MULTIPLICITY	1745	#if EV_MULTIPLICITY
1501	struct ev_loop *loop = ev_default_loop_ptr;	1746	struct ev_loop *loop = ev_default_loop_ptr;
1502	#endif	1747	#endif
1503		1748
		1749	ev_default_loop_ptr = 0;
		1750
1504	#ifndef _WIN32	1751	#ifndef _WIN32
1505	ev_ref (EV_A); /* child watcher */	1752	ev_ref (EV_A); /* child watcher */
1506	ev_signal_stop (EV_A_ &childev);	1753	ev_signal_stop (EV_A_ &childev);
1507	#endif	1754	#endif
1508		1755
…		…
1514	{	1761	{
1515	#if EV_MULTIPLICITY	1762	#if EV_MULTIPLICITY
1516	struct ev_loop *loop = ev_default_loop_ptr;	1763	struct ev_loop *loop = ev_default_loop_ptr;
1517	#endif	1764	#endif
1518		1765
1519	if (backend)
1520	postfork = 1; /* must be in line with ev_loop_fork */	1766	postfork = 1; /* must be in line with ev_loop_fork */
1521	}	1767	}
1522		1768
1523	/*****************************************************************************/	1769	/*****************************************************************************/
1524		1770
1525	void	1771	void
1526	ev_invoke (EV_P_ void *w, int revents)	1772	ev_invoke (EV_P_ void *w, int revents)
1527	{	1773	{
1528	EV_CB_INVOKE ((W)w, revents);	1774	EV_CB_INVOKE ((W)w, revents);
1529	}	1775	}
1530		1776
1531	void inline_speed	1777	inline_speed void
1532	call_pending (EV_P)	1778	call_pending (EV_P)
1533	{	1779	{
1534	int pri;	1780	int pri;
1535		1781
1536	for (pri = NUMPRI; pri--; )	1782	for (pri = NUMPRI; pri--; )
1537	while (pendingcnt [pri])	1783	while (pendingcnt [pri])
1538	{	1784	{
1539	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1785	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1540		1786
1541	if (expect_true (p->w))
1542	{
1543	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1787	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1788	/* ^ this is no longer true, as pending_w could be here */
1544		1789
1545	p->w->pending = 0;	1790	p->w->pending = 0;
1546	EV_CB_INVOKE (p->w, p->events);	1791	EV_CB_INVOKE (p->w, p->events);
1547	}	1792	EV_FREQUENT_CHECK;
1548	}	1793	}
1549	}	1794	}
1550		1795
1551	#if EV_IDLE_ENABLE	1796	#if EV_IDLE_ENABLE
1552	void inline_size	1797	/* make idle watchers pending. this handles the "call-idle */
		1798	/* only when higher priorities are idle" logic */
		1799	inline_size void
1553	idle_reify (EV_P)	1800	idle_reify (EV_P)
1554	{	1801	{
1555	if (expect_false (idleall))	1802	if (expect_false (idleall))
1556	{	1803	{
1557	int pri;	1804	int pri;
…		…
1569	}	1816	}
1570	}	1817	}
1571	}	1818	}
1572	#endif	1819	#endif
1573		1820
1574	void inline_size	1821	/* make timers pending */
		1822	inline_size void
1575	timers_reify (EV_P)	1823	timers_reify (EV_P)
1576	{	1824	{
		1825	EV_FREQUENT_CHECK;
		1826
1577	while (timercnt && ev_at (timers [HEAP0]) <= mn_now)	1827	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1578	{	1828	{
1579	ev_timer *w = (ev_timer *)timers [HEAP0];	1829	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	{	1830	{
		1831	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1832
		1833	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		1834
		1835	/* first reschedule or stop timer */
		1836	if (w->repeat)
		1837	{
		1838	ev_at (w) += w->repeat;
		1839	if (ev_at (w) < mn_now)
		1840	ev_at (w) = mn_now;
		1841
1586	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1842	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1587		1843
1588	ev_at (w) += w->repeat;	1844	ANHE_at_cache (timers [HEAP0]);
1589	if (ev_at (w) < mn_now)
1590	ev_at (w) = mn_now;
1591
1592	downheap (timers, timercnt, HEAP0);	1845	downheap (timers, timercnt, HEAP0);
		1846	}
		1847	else
		1848	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1849
		1850	EV_FREQUENT_CHECK;
		1851	feed_reverse (EV_A_ (W)w);
1593	}	1852	}
1594	else	1853	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1595	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1596		1854
1597	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1855	feed_reverse_done (EV_A_ EV_TIMEOUT);
1598	}	1856	}
1599	}	1857	}
1600		1858
1601	#if EV_PERIODIC_ENABLE	1859	#if EV_PERIODIC_ENABLE
1602	void inline_size	1860	/* make periodics pending */
		1861	inline_size void
1603	periodics_reify (EV_P)	1862	periodics_reify (EV_P)
1604	{	1863	{
		1864	EV_FREQUENT_CHECK;
		1865
1605	while (periodiccnt && ev_at (periodics [HEAP0]) <= ev_rt_now)	1866	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1606	{	1867	{
1607	ev_periodic *w = (ev_periodic *)periodics [HEAP0];	1868	int feed_count = 0;
1608		1869
1609	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	1870	do
1610
1611	/* first reschedule or stop timer */
1612	if (w->reschedule_cb)
1613	{	1871	{
		1872	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1873
		1874	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		1875
		1876	/* first reschedule or stop timer */
		1877	if (w->reschedule_cb)
		1878	{
1614	ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);	1879	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1880
1615	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));	1881	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		1882
		1883	ANHE_at_cache (periodics [HEAP0]);
1616	downheap (periodics, periodiccnt, 1);	1884	downheap (periodics, periodiccnt, HEAP0);
		1885	}
		1886	else if (w->interval)
		1887	{
		1888	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1889	/* if next trigger time is not sufficiently in the future, put it there */
		1890	/* this might happen because of floating point inexactness */
		1891	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1892	{
		1893	ev_at (w) += w->interval;
		1894
		1895	/* if interval is unreasonably low we might still have a time in the past */
		1896	/* so correct this. this will make the periodic very inexact, but the user */
		1897	/* has effectively asked to get triggered more often than possible */
		1898	if (ev_at (w) < ev_rt_now)
		1899	ev_at (w) = ev_rt_now;
		1900	}
		1901
		1902	ANHE_at_cache (periodics [HEAP0]);
		1903	downheap (periodics, periodiccnt, HEAP0);
		1904	}
		1905	else
		1906	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1907
		1908	EV_FREQUENT_CHECK;
		1909	feed_reverse (EV_A_ (W)w);
1617	}	1910	}
1618	else if (w->interval)	1911	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		1912
1628	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1913	feed_reverse_done (EV_A_ EV_PERIODIC);
1629	}	1914	}
1630	}	1915	}
1631		1916
		1917	/* simply recalculate all periodics */
		1918	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1632	static void noinline	1919	static void noinline
1633	periodics_reschedule (EV_P)	1920	periodics_reschedule (EV_P)
1634	{	1921	{
1635	int i;	1922	int i;
1636		1923
1637	/* adjust periodics after time jump */	1924	/* adjust periodics after time jump */
1638	for (i = 1; i <= periodiccnt; ++i)	1925	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1639	{	1926	{
1640	ev_periodic *w = (ev_periodic *)periodics [i];	1927	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1641		1928
1642	if (w->reschedule_cb)	1929	if (w->reschedule_cb)
1643	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1930	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1644	else if (w->interval)	1931	else if (w->interval)
1645	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	1932	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1933
		1934	ANHE_at_cache (periodics [i]);
		1935	}
		1936
		1937	reheap (periodics, periodiccnt);
		1938	}
		1939	#endif
		1940
		1941	/* adjust all timers by a given offset */
		1942	static void noinline
		1943	timers_reschedule (EV_P_ ev_tstamp adjust)
		1944	{
		1945	int i;
		1946
		1947	for (i = 0; i < timercnt; ++i)
1646	}	1948	{
1647		1949	ANHE *he = timers + i + HEAP0;
1648	/* now rebuild the heap */	1950	ANHE_w (*he)->at += adjust;
1649	for (i = periodiccnt >> 1; --i; )	1951	ANHE_at_cache (*he);
1650	downheap (periodics, periodiccnt, i + HEAP0);	1952	}
1651	}	1953	}
1652	#endif
1653		1954
1654	void inline_speed	1955	/* fetch new monotonic and realtime times from the kernel */
		1956	/* also detetc if there was a timejump, and act accordingly */
		1957	inline_speed void
1655	time_update (EV_P_ ev_tstamp max_block)	1958	time_update (EV_P_ ev_tstamp max_block)
1656	{	1959	{
1657	int i;
1658
1659	#if EV_USE_MONOTONIC	1960	#if EV_USE_MONOTONIC
1660	if (expect_true (have_monotonic))	1961	if (expect_true (have_monotonic))
1661	{	1962	{
		1963	int i;
1662	ev_tstamp odiff = rtmn_diff;	1964	ev_tstamp odiff = rtmn_diff;
1663		1965
1664	mn_now = get_clock ();	1966	mn_now = get_clock ();
1665		1967
1666	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	1968	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1692	ev_rt_now = ev_time ();	1994	ev_rt_now = ev_time ();
1693	mn_now = get_clock ();	1995	mn_now = get_clock ();
1694	now_floor = mn_now;	1996	now_floor = mn_now;
1695	}	1997	}
1696		1998
		1999	/* no timer adjustment, as the monotonic clock doesn't jump */
		2000	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1697	# if EV_PERIODIC_ENABLE	2001	# if EV_PERIODIC_ENABLE
1698	periodics_reschedule (EV_A);	2002	periodics_reschedule (EV_A);
1699	# endif	2003	# endif
1700	/* no timer adjustment, as the monotonic clock doesn't jump */
1701	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1702	}	2004	}
1703	else	2005	else
1704	#endif	2006	#endif
1705	{	2007	{
1706	ev_rt_now = ev_time ();	2008	ev_rt_now = ev_time ();
1707		2009
1708	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2010	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1709	{	2011	{
		2012	/* adjust timers. this is easy, as the offset is the same for all of them */
		2013	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1710	#if EV_PERIODIC_ENABLE	2014	#if EV_PERIODIC_ENABLE
1711	periodics_reschedule (EV_A);	2015	periodics_reschedule (EV_A);
1712	#endif	2016	#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	}	2017	}
1717		2018
1718	mn_now = ev_rt_now;	2019	mn_now = ev_rt_now;
1719	}	2020	}
1720	}	2021	}
1721		2022
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;	2023	static int loop_done;
1735		2024
1736	void	2025	void
1737	ev_loop (EV_P_ int flags)	2026	ev_loop (EV_P_ int flags)
1738	{	2027	{
…		…
1740		2029
1741	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2030	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1742		2031
1743	do	2032	do
1744	{	2033	{
		2034	#if EV_VERIFY >= 2
		2035	ev_loop_verify (EV_A);
		2036	#endif
		2037
1745	#ifndef _WIN32	2038	#ifndef _WIN32
1746	if (expect_false (curpid)) /* penalise the forking check even more */	2039	if (expect_false (curpid)) /* penalise the forking check even more */
1747	if (expect_false (getpid () != curpid))	2040	if (expect_false (getpid () != curpid))
1748	{	2041	{
1749	curpid = getpid ();	2042	curpid = getpid ();
…		…
1766	{	2059	{
1767	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2060	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1768	call_pending (EV_A);	2061	call_pending (EV_A);
1769	}	2062	}
1770		2063
1771	if (expect_false (!activecnt))
1772	break;
1773
1774	/* we might have forked, so reify kernel state if necessary */	2064	/* we might have forked, so reify kernel state if necessary */
1775	if (expect_false (postfork))	2065	if (expect_false (postfork))
1776	loop_fork (EV_A);	2066	loop_fork (EV_A);
1777		2067
1778	/* update fd-related kernel structures */	2068	/* update fd-related kernel structures */
…		…
1790		2080
1791	waittime = MAX_BLOCKTIME;	2081	waittime = MAX_BLOCKTIME;
1792		2082
1793	if (timercnt)	2083	if (timercnt)
1794	{	2084	{
1795	ev_tstamp to = ev_at (timers [HEAP0]) - mn_now + backend_fudge;	2085	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1796	if (waittime > to) waittime = to;	2086	if (waittime > to) waittime = to;
1797	}	2087	}
1798		2088
1799	#if EV_PERIODIC_ENABLE	2089	#if EV_PERIODIC_ENABLE
1800	if (periodiccnt)	2090	if (periodiccnt)
1801	{	2091	{
1802	ev_tstamp to = ev_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2092	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1803	if (waittime > to) waittime = to;	2093	if (waittime > to) waittime = to;
1804	}	2094	}
1805	#endif	2095	#endif
1806		2096
1807	if (expect_false (waittime < timeout_blocktime))	2097	if (expect_false (waittime < timeout_blocktime))
…		…
1857	ev_unloop (EV_P_ int how)	2147	ev_unloop (EV_P_ int how)
1858	{	2148	{
1859	loop_done = how;	2149	loop_done = how;
1860	}	2150	}
1861		2151
		2152	void
		2153	ev_ref (EV_P)
		2154	{
		2155	++activecnt;
		2156	}
		2157
		2158	void
		2159	ev_unref (EV_P)
		2160	{
		2161	--activecnt;
		2162	}
		2163
		2164	void
		2165	ev_now_update (EV_P)
		2166	{
		2167	time_update (EV_A_ 1e100);
		2168	}
		2169
		2170	void
		2171	ev_suspend (EV_P)
		2172	{
		2173	ev_now_update (EV_A);
		2174	}
		2175
		2176	void
		2177	ev_resume (EV_P)
		2178	{
		2179	ev_tstamp mn_prev = mn_now;
		2180
		2181	ev_now_update (EV_A);
		2182	timers_reschedule (EV_A_ mn_now - mn_prev);
		2183	#if EV_PERIODIC_ENABLE
		2184	/* TODO: really do this? */
		2185	periodics_reschedule (EV_A);
		2186	#endif
		2187	}
		2188
1862	/*****************************************************************************/	2189	/*****************************************************************************/
		2190	/* singly-linked list management, used when the expected list length is short */
1863		2191
1864	void inline_size	2192	inline_size void
1865	wlist_add (WL *head, WL elem)	2193	wlist_add (WL *head, WL elem)
1866	{	2194	{
1867	elem->next = *head;	2195	elem->next = *head;
1868	*head = elem;	2196	*head = elem;
1869	}	2197	}
1870		2198
1871	void inline_size	2199	inline_size void
1872	wlist_del (WL *head, WL elem)	2200	wlist_del (WL *head, WL elem)
1873	{	2201	{
1874	while (*head)	2202	while (*head)
1875	{	2203	{
1876	if (*head == elem)	2204	if (*head == elem)
…		…
1881		2209
1882	head = &(*head)->next;	2210	head = &(*head)->next;
1883	}	2211	}
1884	}	2212	}
1885		2213
1886	void inline_speed	2214	/* internal, faster, version of ev_clear_pending */
		2215	inline_speed void
1887	clear_pending (EV_P_ W w)	2216	clear_pending (EV_P_ W w)
1888	{	2217	{
1889	if (w->pending)	2218	if (w->pending)
1890	{	2219	{
1891	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2220	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1892	w->pending = 0;	2221	w->pending = 0;
1893	}	2222	}
1894	}	2223	}
1895		2224
1896	int	2225	int
…		…
1900	int pending = w_->pending;	2229	int pending = w_->pending;
1901		2230
1902	if (expect_true (pending))	2231	if (expect_true (pending))
1903	{	2232	{
1904	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2233	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2234	p->w = (W)&pending_w;
1905	w_->pending = 0;	2235	w_->pending = 0;
1906	p->w = 0;
1907	return p->events;	2236	return p->events;
1908	}	2237	}
1909	else	2238	else
1910	return 0;	2239	return 0;
1911	}	2240	}
1912		2241
1913	void inline_size	2242	inline_size void
1914	pri_adjust (EV_P_ W w)	2243	pri_adjust (EV_P_ W w)
1915	{	2244	{
1916	int pri = w->priority;	2245	int pri = w->priority;
1917	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2246	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1918	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2247	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1919	w->priority = pri;	2248	w->priority = pri;
1920	}	2249	}
1921		2250
1922	void inline_speed	2251	inline_speed void
1923	ev_start (EV_P_ W w, int active)	2252	ev_start (EV_P_ W w, int active)
1924	{	2253	{
1925	pri_adjust (EV_A_ w);	2254	pri_adjust (EV_A_ w);
1926	w->active = active;	2255	w->active = active;
1927	ev_ref (EV_A);	2256	ev_ref (EV_A);
1928	}	2257	}
1929		2258
1930	void inline_size	2259	inline_size void
1931	ev_stop (EV_P_ W w)	2260	ev_stop (EV_P_ W w)
1932	{	2261	{
1933	ev_unref (EV_A);	2262	ev_unref (EV_A);
1934	w->active = 0;	2263	w->active = 0;
1935	}	2264	}
…		…
1942	int fd = w->fd;	2271	int fd = w->fd;
1943		2272
1944	if (expect_false (ev_is_active (w)))	2273	if (expect_false (ev_is_active (w)))
1945	return;	2274	return;
1946		2275
1947	assert (("ev_io_start called with negative fd", fd >= 0));	2276	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2277	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
		2278
		2279	EV_FREQUENT_CHECK;
1948		2280
1949	ev_start (EV_A_ (W)w, 1);	2281	ev_start (EV_A_ (W)w, 1);
1950	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2282	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1951	wlist_add (&anfds[fd].head, (WL)w);	2283	wlist_add (&anfds[fd].head, (WL)w);
1952		2284
1953	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2285	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
1954	w->events &= ~EV_IOFDSET;	2286	w->events &= ~EV__IOFDSET;
		2287
		2288	EV_FREQUENT_CHECK;
1955	}	2289	}
1956		2290
1957	void noinline	2291	void noinline
1958	ev_io_stop (EV_P_ ev_io *w)	2292	ev_io_stop (EV_P_ ev_io *w)
1959	{	2293	{
1960	clear_pending (EV_A_ (W)w);	2294	clear_pending (EV_A_ (W)w);
1961	if (expect_false (!ev_is_active (w)))	2295	if (expect_false (!ev_is_active (w)))
1962	return;	2296	return;
1963		2297
1964	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2298	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		2299
		2300	EV_FREQUENT_CHECK;
1965		2301
1966	wlist_del (&anfds[w->fd].head, (WL)w);	2302	wlist_del (&anfds[w->fd].head, (WL)w);
1967	ev_stop (EV_A_ (W)w);	2303	ev_stop (EV_A_ (W)w);
1968		2304
1969	fd_change (EV_A_ w->fd, 1);	2305	fd_change (EV_A_ w->fd, 1);
		2306
		2307	EV_FREQUENT_CHECK;
1970	}	2308	}
1971		2309
1972	void noinline	2310	void noinline
1973	ev_timer_start (EV_P_ ev_timer *w)	2311	ev_timer_start (EV_P_ ev_timer *w)
1974	{	2312	{
1975	if (expect_false (ev_is_active (w)))	2313	if (expect_false (ev_is_active (w)))
1976	return;	2314	return;
1977		2315
1978	ev_at (w) += mn_now;	2316	ev_at (w) += mn_now;
1979		2317
1980	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2318	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1981		2319
		2320	EV_FREQUENT_CHECK;
		2321
		2322	++timercnt;
1982	ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1);	2323	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1983	array_needsize (WT, timers, timermax, timercnt + HEAP0, EMPTY2);	2324	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1984	timers [ev_active (w)] = (WT)w;	2325	ANHE_w (timers [ev_active (w)]) = (WT)w;
		2326	ANHE_at_cache (timers [ev_active (w)]);
1985	upheap (timers, ev_active (w));	2327	upheap (timers, ev_active (w));
1986		2328
		2329	EV_FREQUENT_CHECK;
		2330
1987	/*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/	2331	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1988	}	2332	}
1989		2333
1990	void noinline	2334	void noinline
1991	ev_timer_stop (EV_P_ ev_timer *w)	2335	ev_timer_stop (EV_P_ ev_timer *w)
1992	{	2336	{
1993	clear_pending (EV_A_ (W)w);	2337	clear_pending (EV_A_ (W)w);
1994	if (expect_false (!ev_is_active (w)))	2338	if (expect_false (!ev_is_active (w)))
1995	return;	2339	return;
1996		2340
		2341	EV_FREQUENT_CHECK;
		2342
1997	{	2343	{
1998	int active = ev_active (w);	2344	int active = ev_active (w);
1999		2345
2000	assert (("internal timer heap corruption", timers [active] == (WT)w));	2346	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2001		2347
		2348	--timercnt;
		2349
2002	if (expect_true (active < timercnt + HEAP0 - 1))	2350	if (expect_true (active < timercnt + HEAP0))
2003	{	2351	{
2004	timers [active] = timers [timercnt + HEAP0 - 1];	2352	timers [active] = timers [timercnt + HEAP0];
2005	adjustheap (timers, timercnt, active);	2353	adjustheap (timers, timercnt, active);
2006	}	2354	}
2007
2008	--timercnt;
2009	}	2355	}
		2356
		2357	EV_FREQUENT_CHECK;
2010		2358
2011	ev_at (w) -= mn_now;	2359	ev_at (w) -= mn_now;
2012		2360
2013	ev_stop (EV_A_ (W)w);	2361	ev_stop (EV_A_ (W)w);
2014	}	2362	}
2015		2363
2016	void noinline	2364	void noinline
2017	ev_timer_again (EV_P_ ev_timer *w)	2365	ev_timer_again (EV_P_ ev_timer *w)
2018	{	2366	{
		2367	EV_FREQUENT_CHECK;
		2368
2019	if (ev_is_active (w))	2369	if (ev_is_active (w))
2020	{	2370	{
2021	if (w->repeat)	2371	if (w->repeat)
2022	{	2372	{
2023	ev_at (w) = mn_now + w->repeat;	2373	ev_at (w) = mn_now + w->repeat;
		2374	ANHE_at_cache (timers [ev_active (w)]);
2024	adjustheap (timers, timercnt, ev_active (w));	2375	adjustheap (timers, timercnt, ev_active (w));
2025	}	2376	}
2026	else	2377	else
2027	ev_timer_stop (EV_A_ w);	2378	ev_timer_stop (EV_A_ w);
2028	}	2379	}
2029	else if (w->repeat)	2380	else if (w->repeat)
2030	{	2381	{
2031	ev_at (w) = w->repeat;	2382	ev_at (w) = w->repeat;
2032	ev_timer_start (EV_A_ w);	2383	ev_timer_start (EV_A_ w);
2033	}	2384	}
		2385
		2386	EV_FREQUENT_CHECK;
2034	}	2387	}
2035		2388
2036	#if EV_PERIODIC_ENABLE	2389	#if EV_PERIODIC_ENABLE
2037	void noinline	2390	void noinline
2038	ev_periodic_start (EV_P_ ev_periodic *w)	2391	ev_periodic_start (EV_P_ ev_periodic *w)
…		…
2042		2395
2043	if (w->reschedule_cb)	2396	if (w->reschedule_cb)
2044	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2397	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2045	else if (w->interval)	2398	else if (w->interval)
2046	{	2399	{
2047	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2400	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2048	/* this formula differs from the one in periodic_reify because we do not always round up */	2401	/* this formula differs from the one in periodic_reify because we do not always round up */
2049	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2402	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2050	}	2403	}
2051	else	2404	else
2052	ev_at (w) = w->offset;	2405	ev_at (w) = w->offset;
2053		2406
		2407	EV_FREQUENT_CHECK;
		2408
		2409	++periodiccnt;
2054	ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1);	2410	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2055	array_needsize (WT, periodics, periodicmax, periodiccnt + HEAP0, EMPTY2);	2411	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2056	periodics [ev_active (w)] = (WT)w;	2412	ANHE_w (periodics [ev_active (w)]) = (WT)w;
		2413	ANHE_at_cache (periodics [ev_active (w)]);
2057	upheap (periodics, ev_active (w));	2414	upheap (periodics, ev_active (w));
2058		2415
		2416	EV_FREQUENT_CHECK;
		2417
2059	/*assert (("internal periodic heap corruption", periodics [ev_active (w)] == w));*/	2418	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2060	}	2419	}
2061		2420
2062	void noinline	2421	void noinline
2063	ev_periodic_stop (EV_P_ ev_periodic *w)	2422	ev_periodic_stop (EV_P_ ev_periodic *w)
2064	{	2423	{
2065	clear_pending (EV_A_ (W)w);	2424	clear_pending (EV_A_ (W)w);
2066	if (expect_false (!ev_is_active (w)))	2425	if (expect_false (!ev_is_active (w)))
2067	return;	2426	return;
2068		2427
		2428	EV_FREQUENT_CHECK;
		2429
2069	{	2430	{
2070	int active = ev_active (w);	2431	int active = ev_active (w);
2071		2432
2072	assert (("internal periodic heap corruption", periodics [active] == (WT)w));	2433	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2073		2434
		2435	--periodiccnt;
		2436
2074	if (expect_true (active < periodiccnt + HEAP0 - 1))	2437	if (expect_true (active < periodiccnt + HEAP0))
2075	{	2438	{
2076	periodics [active] = periodics [periodiccnt + HEAP0 - 1];	2439	periodics [active] = periodics [periodiccnt + HEAP0];
2077	adjustheap (periodics, periodiccnt, active);	2440	adjustheap (periodics, periodiccnt, active);
2078	}	2441	}
2079
2080	--periodiccnt;
2081	}	2442	}
		2443
		2444	EV_FREQUENT_CHECK;
2082		2445
2083	ev_stop (EV_A_ (W)w);	2446	ev_stop (EV_A_ (W)w);
2084	}	2447	}
2085		2448
2086	void noinline	2449	void noinline
…		…
2098		2461
2099	void noinline	2462	void noinline
2100	ev_signal_start (EV_P_ ev_signal *w)	2463	ev_signal_start (EV_P_ ev_signal *w)
2101	{	2464	{
2102	#if EV_MULTIPLICITY	2465	#if EV_MULTIPLICITY
2103	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2466	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2104	#endif	2467	#endif
2105	if (expect_false (ev_is_active (w)))	2468	if (expect_false (ev_is_active (w)))
2106	return;	2469	return;
2107		2470
2108	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2471	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2109		2472
2110	evpipe_init (EV_A);	2473	evpipe_init (EV_A);
		2474
		2475	EV_FREQUENT_CHECK;
2111		2476
2112	{	2477	{
2113	#ifndef _WIN32	2478	#ifndef _WIN32
2114	sigset_t full, prev;	2479	sigset_t full, prev;
2115	sigfillset (&full);	2480	sigfillset (&full);
2116	sigprocmask (SIG_SETMASK, &full, &prev);	2481	sigprocmask (SIG_SETMASK, &full, &prev);
2117	#endif	2482	#endif
2118		2483
2119	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2484	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2120		2485
2121	#ifndef _WIN32	2486	#ifndef _WIN32
2122	sigprocmask (SIG_SETMASK, &prev, 0);	2487	sigprocmask (SIG_SETMASK, &prev, 0);
2123	#endif	2488	#endif
2124	}	2489	}
…		…
2136	sigfillset (&sa.sa_mask);	2501	sigfillset (&sa.sa_mask);
2137	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2502	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2138	sigaction (w->signum, &sa, 0);	2503	sigaction (w->signum, &sa, 0);
2139	#endif	2504	#endif
2140	}	2505	}
		2506
		2507	EV_FREQUENT_CHECK;
2141	}	2508	}
2142		2509
2143	void noinline	2510	void noinline
2144	ev_signal_stop (EV_P_ ev_signal *w)	2511	ev_signal_stop (EV_P_ ev_signal *w)
2145	{	2512	{
2146	clear_pending (EV_A_ (W)w);	2513	clear_pending (EV_A_ (W)w);
2147	if (expect_false (!ev_is_active (w)))	2514	if (expect_false (!ev_is_active (w)))
2148	return;	2515	return;
2149		2516
		2517	EV_FREQUENT_CHECK;
		2518
2150	wlist_del (&signals [w->signum - 1].head, (WL)w);	2519	wlist_del (&signals [w->signum - 1].head, (WL)w);
2151	ev_stop (EV_A_ (W)w);	2520	ev_stop (EV_A_ (W)w);
2152		2521
2153	if (!signals [w->signum - 1].head)	2522	if (!signals [w->signum - 1].head)
2154	signal (w->signum, SIG_DFL);	2523	signal (w->signum, SIG_DFL);
		2524
		2525	EV_FREQUENT_CHECK;
2155	}	2526	}
2156		2527
2157	void	2528	void
2158	ev_child_start (EV_P_ ev_child *w)	2529	ev_child_start (EV_P_ ev_child *w)
2159	{	2530	{
2160	#if EV_MULTIPLICITY	2531	#if EV_MULTIPLICITY
2161	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2532	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2162	#endif	2533	#endif
2163	if (expect_false (ev_is_active (w)))	2534	if (expect_false (ev_is_active (w)))
2164	return;	2535	return;
2165		2536
		2537	EV_FREQUENT_CHECK;
		2538
2166	ev_start (EV_A_ (W)w, 1);	2539	ev_start (EV_A_ (W)w, 1);
2167	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2540	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2541
		2542	EV_FREQUENT_CHECK;
2168	}	2543	}
2169		2544
2170	void	2545	void
2171	ev_child_stop (EV_P_ ev_child *w)	2546	ev_child_stop (EV_P_ ev_child *w)
2172	{	2547	{
2173	clear_pending (EV_A_ (W)w);	2548	clear_pending (EV_A_ (W)w);
2174	if (expect_false (!ev_is_active (w)))	2549	if (expect_false (!ev_is_active (w)))
2175	return;	2550	return;
2176		2551
		2552	EV_FREQUENT_CHECK;
		2553
2177	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2554	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2178	ev_stop (EV_A_ (W)w);	2555	ev_stop (EV_A_ (W)w);
		2556
		2557	EV_FREQUENT_CHECK;
2179	}	2558	}
2180		2559
2181	#if EV_STAT_ENABLE	2560	#if EV_STAT_ENABLE
2182		2561
2183	# ifdef _WIN32	2562	# ifdef _WIN32
2184	# undef lstat	2563	# undef lstat
2185	# define lstat(a,b) _stati64 (a,b)	2564	# define lstat(a,b) _stati64 (a,b)
2186	# endif	2565	# endif
2187		2566
2188	#define DEF_STAT_INTERVAL 5.0074891	2567	#define DEF_STAT_INTERVAL 5.0074891
		2568	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2189	#define MIN_STAT_INTERVAL 0.1074891	2569	#define MIN_STAT_INTERVAL 0.1074891
2190		2570
2191	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2571	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2192		2572
2193	#if EV_USE_INOTIFY	2573	#if EV_USE_INOTIFY
2194	# define EV_INOTIFY_BUFSIZE 8192	2574	# define EV_INOTIFY_BUFSIZE 8192
…		…
2198	{	2578	{
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);	2579	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2200		2580
2201	if (w->wd < 0)	2581	if (w->wd < 0)
2202	{	2582	{
		2583	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 */	2584	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2204		2585
2205	/* monitor some parent directory for speedup hints */	2586	/* monitor some parent directory for speedup hints */
2206	/* note that exceeding the hardcoded limit is not a correctness issue, */	2587	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2207	/* but an efficiency issue only */	2588	/* but an efficiency issue only */
2208	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2589	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2209	{	2590	{
2210	char path [4096];	2591	char path [4096];
2211	strcpy (path, w->path);	2592	strcpy (path, w->path);
…		…
2215	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2596	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2216	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2597	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2217		2598
2218	char *pend = strrchr (path, '/');	2599	char *pend = strrchr (path, '/');
2219		2600
2220	if (!pend)	2601	if (!pend || pend == path)
2221	break; /* whoops, no '/', complain to your admin */	2602	break;
2222		2603
2223	*pend = 0;	2604	*pend = 0;
2224	w->wd = inotify_add_watch (fs_fd, path, mask);	2605	w->wd = inotify_add_watch (fs_fd, path, mask);
2225	}	2606	}
2226	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2607	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2227	}	2608	}
2228	}	2609	}
2229	else
2230	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2231		2610
2232	if (w->wd >= 0)	2611	if (w->wd >= 0)
		2612	{
2233	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2613	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2614
		2615	/* now local changes will be tracked by inotify, but remote changes won't */
		2616	/* unless the filesystem it known to be local, we therefore still poll */
		2617	/* also do poll on <2.6.25, but with normal frequency */
		2618	struct statfs sfs;
		2619
		2620	if (fs_2625 && !statfs (w->path, &sfs))
		2621	if (sfs.f_type == 0x1373 /* devfs */
		2622	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2623	|| sfs.f_type == 0x3153464a /* jfs */
		2624	|| sfs.f_type == 0x52654973 /* reiser3 */
		2625	|| sfs.f_type == 0x01021994 /* tempfs */
		2626	|| sfs.f_type == 0x58465342 /* xfs */)
		2627	return;
		2628
		2629	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2630	ev_timer_again (EV_A_ &w->timer);
		2631	}
2234	}	2632	}
2235		2633
2236	static void noinline	2634	static void noinline
2237	infy_del (EV_P_ ev_stat *w)	2635	infy_del (EV_P_ ev_stat *w)
2238	{	2636	{
…		…
2252		2650
2253	static void noinline	2651	static void noinline
2254	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2652	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2255	{	2653	{
2256	if (slot < 0)	2654	if (slot < 0)
2257	/* overflow, need to check for all hahs slots */	2655	/* overflow, need to check for all hash slots */
2258	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2656	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2259	infy_wd (EV_A_ slot, wd, ev);	2657	infy_wd (EV_A_ slot, wd, ev);
2260	else	2658	else
2261	{	2659	{
2262	WL w_;	2660	WL w_;
…		…
2268		2666
2269	if (w->wd == wd || wd == -1)	2667	if (w->wd == wd || wd == -1)
2270	{	2668	{
2271	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2669	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2272	{	2670	{
		2671	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2273	w->wd = -1;	2672	w->wd = -1;
2274	infy_add (EV_A_ w); /* re-add, no matter what */	2673	infy_add (EV_A_ w); /* re-add, no matter what */
2275	}	2674	}
2276		2675
2277	stat_timer_cb (EV_A_ &w->timer, 0);	2676	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2290		2689
2291	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2690	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2292	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2691	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2293	}	2692	}
2294		2693
2295	void inline_size	2694	inline_size void
		2695	check_2625 (EV_P)
		2696	{
		2697	/* kernels < 2.6.25 are borked
		2698	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2699	*/
		2700	struct utsname buf;
		2701	int major, minor, micro;
		2702
		2703	if (uname (&buf))
		2704	return;
		2705
		2706	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2707	return;
		2708
		2709	if (major < 2
		2710	|| (major == 2 && minor < 6)
		2711	|| (major == 2 && minor == 6 && micro < 25))
		2712	return;
		2713
		2714	fs_2625 = 1;
		2715	}
		2716
		2717	inline_size void
2296	infy_init (EV_P)	2718	infy_init (EV_P)
2297	{	2719	{
2298	if (fs_fd != -2)	2720	if (fs_fd != -2)
2299	return;	2721	return;
		2722
		2723	fs_fd = -1;
		2724
		2725	check_2625 (EV_A);
2300		2726
2301	fs_fd = inotify_init ();	2727	fs_fd = inotify_init ();
2302		2728
2303	if (fs_fd >= 0)	2729	if (fs_fd >= 0)
2304	{	2730	{
…		…
2306	ev_set_priority (&fs_w, EV_MAXPRI);	2732	ev_set_priority (&fs_w, EV_MAXPRI);
2307	ev_io_start (EV_A_ &fs_w);	2733	ev_io_start (EV_A_ &fs_w);
2308	}	2734	}
2309	}	2735	}
2310		2736
2311	void inline_size	2737	inline_size void
2312	infy_fork (EV_P)	2738	infy_fork (EV_P)
2313	{	2739	{
2314	int slot;	2740	int slot;
2315		2741
2316	if (fs_fd < 0)	2742	if (fs_fd < 0)
…		…
2332	w->wd = -1;	2758	w->wd = -1;
2333		2759
2334	if (fs_fd >= 0)	2760	if (fs_fd >= 0)
2335	infy_add (EV_A_ w); /* re-add, no matter what */	2761	infy_add (EV_A_ w); /* re-add, no matter what */
2336	else	2762	else
2337	ev_timer_start (EV_A_ &w->timer);	2763	ev_timer_again (EV_A_ &w->timer);
2338	}	2764	}
2339
2340	}	2765	}
2341	}	2766	}
2342		2767
		2768	#endif
		2769
		2770	#ifdef _WIN32
		2771	# define EV_LSTAT(p,b) _stati64 (p, b)
		2772	#else
		2773	# define EV_LSTAT(p,b) lstat (p, b)
2343	#endif	2774	#endif
2344		2775
2345	void	2776	void
2346	ev_stat_stat (EV_P_ ev_stat *w)	2777	ev_stat_stat (EV_P_ ev_stat *w)
2347	{	2778	{
…		…
2374	|| w->prev.st_atime != w->attr.st_atime	2805	|| w->prev.st_atime != w->attr.st_atime
2375	|| w->prev.st_mtime != w->attr.st_mtime	2806	|| w->prev.st_mtime != w->attr.st_mtime
2376	|| w->prev.st_ctime != w->attr.st_ctime	2807	|| w->prev.st_ctime != w->attr.st_ctime
2377	) {	2808	) {
2378	#if EV_USE_INOTIFY	2809	#if EV_USE_INOTIFY
		2810	if (fs_fd >= 0)
		2811	{
2379	infy_del (EV_A_ w);	2812	infy_del (EV_A_ w);
2380	infy_add (EV_A_ w);	2813	infy_add (EV_A_ w);
2381	ev_stat_stat (EV_A_ w); /* avoid race... */	2814	ev_stat_stat (EV_A_ w); /* avoid race... */
		2815	}
2382	#endif	2816	#endif
2383		2817
2384	ev_feed_event (EV_A_ w, EV_STAT);	2818	ev_feed_event (EV_A_ w, EV_STAT);
2385	}	2819	}
2386	}	2820	}
…		…
2389	ev_stat_start (EV_P_ ev_stat *w)	2823	ev_stat_start (EV_P_ ev_stat *w)
2390	{	2824	{
2391	if (expect_false (ev_is_active (w)))	2825	if (expect_false (ev_is_active (w)))
2392	return;	2826	return;
2393		2827
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);	2828	ev_stat_stat (EV_A_ w);
2399		2829
		2830	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2400	if (w->interval < MIN_STAT_INTERVAL)	2831	w->interval = MIN_STAT_INTERVAL;
2401	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2402		2832
2403	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2833	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2404	ev_set_priority (&w->timer, ev_priority (w));	2834	ev_set_priority (&w->timer, ev_priority (w));
2405		2835
2406	#if EV_USE_INOTIFY	2836	#if EV_USE_INOTIFY
2407	infy_init (EV_A);	2837	infy_init (EV_A);
2408		2838
2409	if (fs_fd >= 0)	2839	if (fs_fd >= 0)
2410	infy_add (EV_A_ w);	2840	infy_add (EV_A_ w);
2411	else	2841	else
2412	#endif	2842	#endif
2413	ev_timer_start (EV_A_ &w->timer);	2843	ev_timer_again (EV_A_ &w->timer);
2414		2844
2415	ev_start (EV_A_ (W)w, 1);	2845	ev_start (EV_A_ (W)w, 1);
		2846
		2847	EV_FREQUENT_CHECK;
2416	}	2848	}
2417		2849
2418	void	2850	void
2419	ev_stat_stop (EV_P_ ev_stat *w)	2851	ev_stat_stop (EV_P_ ev_stat *w)
2420	{	2852	{
2421	clear_pending (EV_A_ (W)w);	2853	clear_pending (EV_A_ (W)w);
2422	if (expect_false (!ev_is_active (w)))	2854	if (expect_false (!ev_is_active (w)))
2423	return;	2855	return;
2424		2856
		2857	EV_FREQUENT_CHECK;
		2858
2425	#if EV_USE_INOTIFY	2859	#if EV_USE_INOTIFY
2426	infy_del (EV_A_ w);	2860	infy_del (EV_A_ w);
2427	#endif	2861	#endif
2428	ev_timer_stop (EV_A_ &w->timer);	2862	ev_timer_stop (EV_A_ &w->timer);
2429		2863
2430	ev_stop (EV_A_ (W)w);	2864	ev_stop (EV_A_ (W)w);
		2865
		2866	EV_FREQUENT_CHECK;
2431	}	2867	}
2432	#endif	2868	#endif
2433		2869
2434	#if EV_IDLE_ENABLE	2870	#if EV_IDLE_ENABLE
2435	void	2871	void
…		…
2437	{	2873	{
2438	if (expect_false (ev_is_active (w)))	2874	if (expect_false (ev_is_active (w)))
2439	return;	2875	return;
2440		2876
2441	pri_adjust (EV_A_ (W)w);	2877	pri_adjust (EV_A_ (W)w);
		2878
		2879	EV_FREQUENT_CHECK;
2442		2880
2443	{	2881	{
2444	int active = ++idlecnt [ABSPRI (w)];	2882	int active = ++idlecnt [ABSPRI (w)];
2445		2883
2446	++idleall;	2884	++idleall;
2447	ev_start (EV_A_ (W)w, active);	2885	ev_start (EV_A_ (W)w, active);
2448		2886
2449	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	2887	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2450	idles [ABSPRI (w)][active - 1] = w;	2888	idles [ABSPRI (w)][active - 1] = w;
2451	}	2889	}
		2890
		2891	EV_FREQUENT_CHECK;
2452	}	2892	}
2453		2893
2454	void	2894	void
2455	ev_idle_stop (EV_P_ ev_idle *w)	2895	ev_idle_stop (EV_P_ ev_idle *w)
2456	{	2896	{
2457	clear_pending (EV_A_ (W)w);	2897	clear_pending (EV_A_ (W)w);
2458	if (expect_false (!ev_is_active (w)))	2898	if (expect_false (!ev_is_active (w)))
2459	return;	2899	return;
2460		2900
		2901	EV_FREQUENT_CHECK;
		2902
2461	{	2903	{
2462	int active = ev_active (w);	2904	int active = ev_active (w);
2463		2905
2464	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	2906	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2465	ev_active (idles [ABSPRI (w)][active - 1]) = active;	2907	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2466		2908
2467	ev_stop (EV_A_ (W)w);	2909	ev_stop (EV_A_ (W)w);
2468	--idleall;	2910	--idleall;
2469	}	2911	}
		2912
		2913	EV_FREQUENT_CHECK;
2470	}	2914	}
2471	#endif	2915	#endif
2472		2916
2473	void	2917	void
2474	ev_prepare_start (EV_P_ ev_prepare *w)	2918	ev_prepare_start (EV_P_ ev_prepare *w)
2475	{	2919	{
2476	if (expect_false (ev_is_active (w)))	2920	if (expect_false (ev_is_active (w)))
2477	return;	2921	return;
		2922
		2923	EV_FREQUENT_CHECK;
2478		2924
2479	ev_start (EV_A_ (W)w, ++preparecnt);	2925	ev_start (EV_A_ (W)w, ++preparecnt);
2480	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	2926	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2481	prepares [preparecnt - 1] = w;	2927	prepares [preparecnt - 1] = w;
		2928
		2929	EV_FREQUENT_CHECK;
2482	}	2930	}
2483		2931
2484	void	2932	void
2485	ev_prepare_stop (EV_P_ ev_prepare *w)	2933	ev_prepare_stop (EV_P_ ev_prepare *w)
2486	{	2934	{
2487	clear_pending (EV_A_ (W)w);	2935	clear_pending (EV_A_ (W)w);
2488	if (expect_false (!ev_is_active (w)))	2936	if (expect_false (!ev_is_active (w)))
2489	return;	2937	return;
2490		2938
		2939	EV_FREQUENT_CHECK;
		2940
2491	{	2941	{
2492	int active = ev_active (w);	2942	int active = ev_active (w);
2493		2943
2494	prepares [active - 1] = prepares [--preparecnt];	2944	prepares [active - 1] = prepares [--preparecnt];
2495	ev_active (prepares [active - 1]) = active;	2945	ev_active (prepares [active - 1]) = active;
2496	}	2946	}
2497		2947
2498	ev_stop (EV_A_ (W)w);	2948	ev_stop (EV_A_ (W)w);
		2949
		2950	EV_FREQUENT_CHECK;
2499	}	2951	}
2500		2952
2501	void	2953	void
2502	ev_check_start (EV_P_ ev_check *w)	2954	ev_check_start (EV_P_ ev_check *w)
2503	{	2955	{
2504	if (expect_false (ev_is_active (w)))	2956	if (expect_false (ev_is_active (w)))
2505	return;	2957	return;
		2958
		2959	EV_FREQUENT_CHECK;
2506		2960
2507	ev_start (EV_A_ (W)w, ++checkcnt);	2961	ev_start (EV_A_ (W)w, ++checkcnt);
2508	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	2962	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2509	checks [checkcnt - 1] = w;	2963	checks [checkcnt - 1] = w;
		2964
		2965	EV_FREQUENT_CHECK;
2510	}	2966	}
2511		2967
2512	void	2968	void
2513	ev_check_stop (EV_P_ ev_check *w)	2969	ev_check_stop (EV_P_ ev_check *w)
2514	{	2970	{
2515	clear_pending (EV_A_ (W)w);	2971	clear_pending (EV_A_ (W)w);
2516	if (expect_false (!ev_is_active (w)))	2972	if (expect_false (!ev_is_active (w)))
2517	return;	2973	return;
2518		2974
		2975	EV_FREQUENT_CHECK;
		2976
2519	{	2977	{
2520	int active = ev_active (w);	2978	int active = ev_active (w);
2521		2979
2522	checks [active - 1] = checks [--checkcnt];	2980	checks [active - 1] = checks [--checkcnt];
2523	ev_active (checks [active - 1]) = active;	2981	ev_active (checks [active - 1]) = active;
2524	}	2982	}
2525		2983
2526	ev_stop (EV_A_ (W)w);	2984	ev_stop (EV_A_ (W)w);
		2985
		2986	EV_FREQUENT_CHECK;
2527	}	2987	}
2528		2988
2529	#if EV_EMBED_ENABLE	2989	#if EV_EMBED_ENABLE
2530	void noinline	2990	void noinline
2531	ev_embed_sweep (EV_P_ ev_embed *w)	2991	ev_embed_sweep (EV_P_ ev_embed *w)
…		…
2558	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3018	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2559	}	3019	}
2560	}	3020	}
2561	}	3021	}
2562		3022
		3023	static void
		3024	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3025	{
		3026	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3027
		3028	ev_embed_stop (EV_A_ w);
		3029
		3030	{
		3031	struct ev_loop *loop = w->other;
		3032
		3033	ev_loop_fork (EV_A);
		3034	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3035	}
		3036
		3037	ev_embed_start (EV_A_ w);
		3038	}
		3039
2563	#if 0	3040	#if 0
2564	static void	3041	static void
2565	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3042	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2566	{	3043	{
2567	ev_idle_stop (EV_A_ idle);	3044	ev_idle_stop (EV_A_ idle);
…		…
2574	if (expect_false (ev_is_active (w)))	3051	if (expect_false (ev_is_active (w)))
2575	return;	3052	return;
2576		3053
2577	{	3054	{
2578	struct ev_loop *loop = w->other;	3055	struct ev_loop *loop = w->other;
2579	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3056	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2580	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3057	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2581	}	3058	}
		3059
		3060	EV_FREQUENT_CHECK;
2582		3061
2583	ev_set_priority (&w->io, ev_priority (w));	3062	ev_set_priority (&w->io, ev_priority (w));
2584	ev_io_start (EV_A_ &w->io);	3063	ev_io_start (EV_A_ &w->io);
2585		3064
2586	ev_prepare_init (&w->prepare, embed_prepare_cb);	3065	ev_prepare_init (&w->prepare, embed_prepare_cb);
2587	ev_set_priority (&w->prepare, EV_MINPRI);	3066	ev_set_priority (&w->prepare, EV_MINPRI);
2588	ev_prepare_start (EV_A_ &w->prepare);	3067	ev_prepare_start (EV_A_ &w->prepare);
2589		3068
		3069	ev_fork_init (&w->fork, embed_fork_cb);
		3070	ev_fork_start (EV_A_ &w->fork);
		3071
2590	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3072	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2591		3073
2592	ev_start (EV_A_ (W)w, 1);	3074	ev_start (EV_A_ (W)w, 1);
		3075
		3076	EV_FREQUENT_CHECK;
2593	}	3077	}
2594		3078
2595	void	3079	void
2596	ev_embed_stop (EV_P_ ev_embed *w)	3080	ev_embed_stop (EV_P_ ev_embed *w)
2597	{	3081	{
2598	clear_pending (EV_A_ (W)w);	3082	clear_pending (EV_A_ (W)w);
2599	if (expect_false (!ev_is_active (w)))	3083	if (expect_false (!ev_is_active (w)))
2600	return;	3084	return;
2601		3085
		3086	EV_FREQUENT_CHECK;
		3087
2602	ev_io_stop (EV_A_ &w->io);	3088	ev_io_stop (EV_A_ &w->io);
2603	ev_prepare_stop (EV_A_ &w->prepare);	3089	ev_prepare_stop (EV_A_ &w->prepare);
		3090	ev_fork_stop (EV_A_ &w->fork);
2604		3091
2605	ev_stop (EV_A_ (W)w);	3092	EV_FREQUENT_CHECK;
2606	}	3093	}
2607	#endif	3094	#endif
2608		3095
2609	#if EV_FORK_ENABLE	3096	#if EV_FORK_ENABLE
2610	void	3097	void
2611	ev_fork_start (EV_P_ ev_fork *w)	3098	ev_fork_start (EV_P_ ev_fork *w)
2612	{	3099	{
2613	if (expect_false (ev_is_active (w)))	3100	if (expect_false (ev_is_active (w)))
2614	return;	3101	return;
		3102
		3103	EV_FREQUENT_CHECK;
2615		3104
2616	ev_start (EV_A_ (W)w, ++forkcnt);	3105	ev_start (EV_A_ (W)w, ++forkcnt);
2617	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3106	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2618	forks [forkcnt - 1] = w;	3107	forks [forkcnt - 1] = w;
		3108
		3109	EV_FREQUENT_CHECK;
2619	}	3110	}
2620		3111
2621	void	3112	void
2622	ev_fork_stop (EV_P_ ev_fork *w)	3113	ev_fork_stop (EV_P_ ev_fork *w)
2623	{	3114	{
2624	clear_pending (EV_A_ (W)w);	3115	clear_pending (EV_A_ (W)w);
2625	if (expect_false (!ev_is_active (w)))	3116	if (expect_false (!ev_is_active (w)))
2626	return;	3117	return;
2627		3118
		3119	EV_FREQUENT_CHECK;
		3120
2628	{	3121	{
2629	int active = ev_active (w);	3122	int active = ev_active (w);
2630		3123
2631	forks [active - 1] = forks [--forkcnt];	3124	forks [active - 1] = forks [--forkcnt];
2632	ev_active (forks [active - 1]) = active;	3125	ev_active (forks [active - 1]) = active;
2633	}	3126	}
2634		3127
2635	ev_stop (EV_A_ (W)w);	3128	ev_stop (EV_A_ (W)w);
		3129
		3130	EV_FREQUENT_CHECK;
2636	}	3131	}
2637	#endif	3132	#endif
2638		3133
2639	#if EV_ASYNC_ENABLE	3134	#if EV_ASYNC_ENABLE
2640	void	3135	void
…		…
2642	{	3137	{
2643	if (expect_false (ev_is_active (w)))	3138	if (expect_false (ev_is_active (w)))
2644	return;	3139	return;
2645		3140
2646	evpipe_init (EV_A);	3141	evpipe_init (EV_A);
		3142
		3143	EV_FREQUENT_CHECK;
2647		3144
2648	ev_start (EV_A_ (W)w, ++asynccnt);	3145	ev_start (EV_A_ (W)w, ++asynccnt);
2649	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);	3146	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2650	asyncs [asynccnt - 1] = w;	3147	asyncs [asynccnt - 1] = w;
		3148
		3149	EV_FREQUENT_CHECK;
2651	}	3150	}
2652		3151
2653	void	3152	void
2654	ev_async_stop (EV_P_ ev_async *w)	3153	ev_async_stop (EV_P_ ev_async *w)
2655	{	3154	{
2656	clear_pending (EV_A_ (W)w);	3155	clear_pending (EV_A_ (W)w);
2657	if (expect_false (!ev_is_active (w)))	3156	if (expect_false (!ev_is_active (w)))
2658	return;	3157	return;
2659		3158
		3159	EV_FREQUENT_CHECK;
		3160
2660	{	3161	{
2661	int active = ev_active (w);	3162	int active = ev_active (w);
2662		3163
2663	asyncs [active - 1] = asyncs [--asynccnt];	3164	asyncs [active - 1] = asyncs [--asynccnt];
2664	ev_active (asyncs [active - 1]) = active;	3165	ev_active (asyncs [active - 1]) = active;
2665	}	3166	}
2666		3167
2667	ev_stop (EV_A_ (W)w);	3168	ev_stop (EV_A_ (W)w);
		3169
		3170	EV_FREQUENT_CHECK;
2668	}	3171	}
2669		3172
2670	void	3173	void
2671	ev_async_send (EV_P_ ev_async *w)	3174	ev_async_send (EV_P_ ev_async *w)
2672	{	3175	{
…		…
2689	once_cb (EV_P_ struct ev_once *once, int revents)	3192	once_cb (EV_P_ struct ev_once *once, int revents)
2690	{	3193	{
2691	void (*cb)(int revents, void *arg) = once->cb;	3194	void (*cb)(int revents, void *arg) = once->cb;
2692	void *arg = once->arg;	3195	void *arg = once->arg;
2693		3196
2694	ev_io_stop (EV_A_ &once->io);	3197	ev_io_stop (EV_A_ &once->io);
2695	ev_timer_stop (EV_A_ &once->to);	3198	ev_timer_stop (EV_A_ &once->to);
2696	ev_free (once);	3199	ev_free (once);
2697		3200
2698	cb (revents, arg);	3201	cb (revents, arg);
2699	}	3202	}
2700		3203
2701	static void	3204	static void
2702	once_cb_io (EV_P_ ev_io *w, int revents)	3205	once_cb_io (EV_P_ ev_io *w, int revents)
2703	{	3206	{
2704	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3207	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3208
		3209	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2705	}	3210	}
2706		3211
2707	static void	3212	static void
2708	once_cb_to (EV_P_ ev_timer *w, int revents)	3213	once_cb_to (EV_P_ ev_timer *w, int revents)
2709	{	3214	{
2710	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3215	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3216
		3217	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2711	}	3218	}
2712		3219
2713	void	3220	void
2714	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3221	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2715	{	3222	{
…		…
2737	ev_timer_set (&once->to, timeout, 0.);	3244	ev_timer_set (&once->to, timeout, 0.);
2738	ev_timer_start (EV_A_ &once->to);	3245	ev_timer_start (EV_A_ &once->to);
2739	}	3246	}
2740	}	3247	}
2741		3248
		3249	/*****************************************************************************/
		3250
		3251	#if EV_WALK_ENABLE
		3252	void
		3253	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3254	{
		3255	int i, j;
		3256	ev_watcher_list *wl, *wn;
		3257
		3258	if (types & (EV_IO | EV_EMBED))
		3259	for (i = 0; i < anfdmax; ++i)
		3260	for (wl = anfds [i].head; wl; )
		3261	{
		3262	wn = wl->next;
		3263
		3264	#if EV_EMBED_ENABLE
		3265	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3266	{
		3267	if (types & EV_EMBED)
		3268	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3269	}
		3270	else
		3271	#endif
		3272	#if EV_USE_INOTIFY
		3273	if (ev_cb ((ev_io *)wl) == infy_cb)
		3274	;
		3275	else
		3276	#endif
		3277	if ((ev_io *)wl != &pipe_w)
		3278	if (types & EV_IO)
		3279	cb (EV_A_ EV_IO, wl);
		3280
		3281	wl = wn;
		3282	}
		3283
		3284	if (types & (EV_TIMER | EV_STAT))
		3285	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3286	#if EV_STAT_ENABLE
		3287	/*TODO: timer is not always active*/
		3288	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3289	{
		3290	if (types & EV_STAT)
		3291	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3292	}
		3293	else
		3294	#endif
		3295	if (types & EV_TIMER)
		3296	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3297
		3298	#if EV_PERIODIC_ENABLE
		3299	if (types & EV_PERIODIC)
		3300	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3301	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3302	#endif
		3303
		3304	#if EV_IDLE_ENABLE
		3305	if (types & EV_IDLE)
		3306	for (j = NUMPRI; i--; )
		3307	for (i = idlecnt [j]; i--; )
		3308	cb (EV_A_ EV_IDLE, idles [j][i]);
		3309	#endif
		3310
		3311	#if EV_FORK_ENABLE
		3312	if (types & EV_FORK)
		3313	for (i = forkcnt; i--; )
		3314	if (ev_cb (forks [i]) != embed_fork_cb)
		3315	cb (EV_A_ EV_FORK, forks [i]);
		3316	#endif
		3317
		3318	#if EV_ASYNC_ENABLE
		3319	if (types & EV_ASYNC)
		3320	for (i = asynccnt; i--; )
		3321	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3322	#endif
		3323
		3324	if (types & EV_PREPARE)
		3325	for (i = preparecnt; i--; )
		3326	#if EV_EMBED_ENABLE
		3327	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3328	#endif
		3329	cb (EV_A_ EV_PREPARE, prepares [i]);
		3330
		3331	if (types & EV_CHECK)
		3332	for (i = checkcnt; i--; )
		3333	cb (EV_A_ EV_CHECK, checks [i]);
		3334
		3335	if (types & EV_SIGNAL)
		3336	for (i = 0; i < signalmax; ++i)
		3337	for (wl = signals [i].head; wl; )
		3338	{
		3339	wn = wl->next;
		3340	cb (EV_A_ EV_SIGNAL, wl);
		3341	wl = wn;
		3342	}
		3343
		3344	if (types & EV_CHILD)
		3345	for (i = EV_PID_HASHSIZE; i--; )
		3346	for (wl = childs [i]; wl; )
		3347	{
		3348	wn = wl->next;
		3349	cb (EV_A_ EV_CHILD, wl);
		3350	wl = wn;
		3351	}
		3352	/* EV_STAT 0x00001000 /* stat data changed */
		3353	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3354	}
		3355	#endif
		3356
2742	#if EV_MULTIPLICITY	3357	#if EV_MULTIPLICITY
2743	#include "ev_wrap.h"	3358	#include "ev_wrap.h"
2744	#endif	3359	#endif
2745		3360
2746	#ifdef __cplusplus	3361	#ifdef __cplusplus

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