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Comparing libev/ev.c (file contents):
Revision 1.240 by root, Thu May 8 21:21:41 2008 UTC vs.
Revision 1.289 by root, Sat Jun 6 11:13:16 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	# endif
		63
52	# if HAVE_CLOCK_GETTIME	64	# if HAVE_CLOCK_GETTIME
53	# ifndef EV_USE_MONOTONIC	65	# ifndef EV_USE_MONOTONIC
54	# define EV_USE_MONOTONIC 1	66	# define EV_USE_MONOTONIC 1
55	# endif	67	# endif
56	# ifndef EV_USE_REALTIME	68	# ifndef EV_USE_REALTIME
57	# define EV_USE_REALTIME 1	69	# define EV_USE_REALTIME 0
58	# endif	70	# endif
59	# else	71	# else
60	# ifndef EV_USE_MONOTONIC	72	# ifndef EV_USE_MONOTONIC
61	# define EV_USE_MONOTONIC 0	73	# define EV_USE_MONOTONIC 0
62	# endif	74	# endif
…		…
126	# define EV_USE_EVENTFD 1	138	# define EV_USE_EVENTFD 1
127	# else	139	# else
128	# define EV_USE_EVENTFD 0	140	# define EV_USE_EVENTFD 0
129	# endif	141	# endif
130	# endif	142	# endif
131		143
132	#endif	144	#endif
133		145
134	#include <math.h>	146	#include <math.h>
135	#include <stdlib.h>	147	#include <stdlib.h>
136	#include <fcntl.h>	148	#include <fcntl.h>
…		…
154	#ifndef _WIN32	166	#ifndef _WIN32
155	# include <sys/time.h>	167	# include <sys/time.h>
156	# include <sys/wait.h>	168	# include <sys/wait.h>
157	# include <unistd.h>	169	# include <unistd.h>
158	#else	170	#else
		171	# include <io.h>
159	# define WIN32_LEAN_AND_MEAN	172	# define WIN32_LEAN_AND_MEAN
160	# include <windows.h>	173	# include <windows.h>
161	# ifndef EV_SELECT_IS_WINSOCKET	174	# ifndef EV_SELECT_IS_WINSOCKET
162	# define EV_SELECT_IS_WINSOCKET 1	175	# define EV_SELECT_IS_WINSOCKET 1
163	# endif	176	# endif
164	#endif	177	#endif
165		178
166	/* this block tries to deduce configuration from header-defined symbols and defaults */	179	/* this block tries to deduce configuration from header-defined symbols and defaults */
167		180
		181	#ifndef EV_USE_CLOCK_SYSCALL
		182	# if __linux && __GLIBC__ >= 2
		183	# define EV_USE_CLOCK_SYSCALL 1
		184	# else
		185	# define EV_USE_CLOCK_SYSCALL 0
		186	# endif
		187	#endif
		188
168	#ifndef EV_USE_MONOTONIC	189	#ifndef EV_USE_MONOTONIC
		190	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
		191	# define EV_USE_MONOTONIC 1
		192	# else
169	# define EV_USE_MONOTONIC 0	193	# define EV_USE_MONOTONIC 0
		194	# endif
170	#endif	195	#endif
171		196
172	#ifndef EV_USE_REALTIME	197	#ifndef EV_USE_REALTIME
173	# define EV_USE_REALTIME 0	198	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174	#endif	199	#endif
175		200
176	#ifndef EV_USE_NANOSLEEP	201	#ifndef EV_USE_NANOSLEEP
		202	# if _POSIX_C_SOURCE >= 199309L
		203	# define EV_USE_NANOSLEEP 1
		204	# else
177	# define EV_USE_NANOSLEEP 0	205	# define EV_USE_NANOSLEEP 0
		206	# endif
178	#endif	207	#endif
179		208
180	#ifndef EV_USE_SELECT	209	#ifndef EV_USE_SELECT
181	# define EV_USE_SELECT 1	210	# define EV_USE_SELECT 1
182	#endif	211	#endif
…		…
235	# else	264	# else
236	# define EV_USE_EVENTFD 0	265	# define EV_USE_EVENTFD 0
237	# endif	266	# endif
238	#endif	267	#endif
239		268
		269	#if 0 /* debugging */
		270	# define EV_VERIFY 3
		271	# define EV_USE_4HEAP 1
		272	# define EV_HEAP_CACHE_AT 1
		273	#endif
		274
		275	#ifndef EV_VERIFY
		276	# define EV_VERIFY !EV_MINIMAL
		277	#endif
		278
		279	#ifndef EV_USE_4HEAP
		280	# define EV_USE_4HEAP !EV_MINIMAL
		281	#endif
		282
		283	#ifndef EV_HEAP_CACHE_AT
		284	# define EV_HEAP_CACHE_AT !EV_MINIMAL
		285	#endif
		286
240	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	287	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
241		288
242	#ifndef CLOCK_MONOTONIC	289	#ifndef CLOCK_MONOTONIC
243	# undef EV_USE_MONOTONIC	290	# undef EV_USE_MONOTONIC
244	# define EV_USE_MONOTONIC 0	291	# define EV_USE_MONOTONIC 0
…		…
259	# include <sys/select.h>	306	# include <sys/select.h>
260	# endif	307	# endif
261	#endif	308	#endif
262		309
263	#if EV_USE_INOTIFY	310	#if EV_USE_INOTIFY
		311	# include <sys/utsname.h>
		312	# include <sys/statfs.h>
264	# include <sys/inotify.h>	313	# include <sys/inotify.h>
		314	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
		315	# ifndef IN_DONT_FOLLOW
		316	# undef EV_USE_INOTIFY
		317	# define EV_USE_INOTIFY 0
		318	# endif
265	#endif	319	#endif
266		320
267	#if EV_SELECT_IS_WINSOCKET	321	#if EV_SELECT_IS_WINSOCKET
268	# include <winsock.h>	322	# include <winsock.h>
		323	#endif
		324
		325	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		326	/* which makes programs even slower. might work on other unices, too. */
		327	#if EV_USE_CLOCK_SYSCALL
		328	# include <syscall.h>
		329	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		330	# undef EV_USE_MONOTONIC
		331	# define EV_USE_MONOTONIC 1
269	#endif	332	#endif
270		333
271	#if EV_USE_EVENTFD	334	#if EV_USE_EVENTFD
272	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	335	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
273	# include <stdint.h>	336	# include <stdint.h>
…		…
279	}	342	}
280	# endif	343	# endif
281	#endif	344	#endif
282		345
283	/**/	346	/**/
		347
		348	#if EV_VERIFY >= 3
		349	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
		350	#else
		351	# define EV_FREQUENT_CHECK do { } while (0)
		352	#endif
284		353
285	/*	354	/*
286	* This is used to avoid floating point rounding problems.	355	* This is used to avoid floating point rounding problems.
287	* It is added to ev_rt_now when scheduling periodics	356	* It is added to ev_rt_now when scheduling periodics
288	* to ensure progress, time-wise, even when rounding	357	* to ensure progress, time-wise, even when rounding
…		…
328	typedef ev_watcher_time *WT;	397	typedef ev_watcher_time *WT;
329		398
330	#define ev_active(w) ((W)(w))->active	399	#define ev_active(w) ((W)(w))->active
331	#define ev_at(w) ((WT)(w))->at	400	#define ev_at(w) ((WT)(w))->at
332		401
333	#if EV_USE_MONOTONIC	402	#if EV_USE_REALTIME
334	/* sig_atomic_t is used to avoid per-thread variables or locking but still */	403	/* 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 */	404	/* giving it a reasonably high chance of working on typical architetcures */
		405	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		406	#endif
		407
		408	#if EV_USE_MONOTONIC
336	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	409	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
337	#endif	410	#endif
338		411
339	#ifdef _WIN32	412	#ifdef _WIN32
340	# include "ev_win32.c"	413	# include "ev_win32.c"
…		…
349	{	422	{
350	syserr_cb = cb;	423	syserr_cb = cb;
351	}	424	}
352		425
353	static void noinline	426	static void noinline
354	syserr (const char *msg)	427	ev_syserr (const char *msg)
355	{	428	{
356	if (!msg)	429	if (!msg)
357	msg = "(libev) system error";	430	msg = "(libev) system error";
358		431
359	if (syserr_cb)	432	if (syserr_cb)
…		…
405	#define ev_malloc(size) ev_realloc (0, (size))	478	#define ev_malloc(size) ev_realloc (0, (size))
406	#define ev_free(ptr) ev_realloc ((ptr), 0)	479	#define ev_free(ptr) ev_realloc ((ptr), 0)
407		480
408	/*****************************************************************************/	481	/*****************************************************************************/
409		482
		483	/* file descriptor info structure */
410	typedef struct	484	typedef struct
411	{	485	{
412	WL head;	486	WL head;
413	unsigned char events;	487	unsigned char events; /* the events watched for */
		488	unsigned char reify; /* flag set when this ANFD needs reification */
		489	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
414	unsigned char reify;	490	unsigned char unused;
		491	#if EV_USE_EPOLL
		492	unsigned int egen; /* generation counter to counter epoll bugs */
		493	#endif
415	#if EV_SELECT_IS_WINSOCKET	494	#if EV_SELECT_IS_WINSOCKET
416	SOCKET handle;	495	SOCKET handle;
417	#endif	496	#endif
418	} ANFD;	497	} ANFD;
419		498
		499	/* stores the pending event set for a given watcher */
420	typedef struct	500	typedef struct
421	{	501	{
422	W w;	502	W w;
423	int events;	503	int events; /* the pending event set for the given watcher */
424	} ANPENDING;	504	} ANPENDING;
425		505
426	#if EV_USE_INOTIFY	506	#if EV_USE_INOTIFY
		507	/* hash table entry per inotify-id */
427	typedef struct	508	typedef struct
428	{	509	{
429	WL head;	510	WL head;
430	} ANFS;	511	} ANFS;
		512	#endif
		513
		514	/* Heap Entry */
		515	#if EV_HEAP_CACHE_AT
		516	/* a heap element */
		517	typedef struct {
		518	ev_tstamp at;
		519	WT w;
		520	} ANHE;
		521
		522	#define ANHE_w(he) (he).w /* access watcher, read-write */
		523	#define ANHE_at(he) (he).at /* access cached at, read-only */
		524	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
		525	#else
		526	/* a heap element */
		527	typedef WT ANHE;
		528
		529	#define ANHE_w(he) (he)
		530	#define ANHE_at(he) (he)->at
		531	#define ANHE_at_cache(he)
431	#endif	532	#endif
432		533
433	#if EV_MULTIPLICITY	534	#if EV_MULTIPLICITY
434		535
435	struct ev_loop	536	struct ev_loop
…		…
460		561
461	ev_tstamp	562	ev_tstamp
462	ev_time (void)	563	ev_time (void)
463	{	564	{
464	#if EV_USE_REALTIME	565	#if EV_USE_REALTIME
		566	if (expect_true (have_realtime))
		567	{
465	struct timespec ts;	568	struct timespec ts;
466	clock_gettime (CLOCK_REALTIME, &ts);	569	clock_gettime (CLOCK_REALTIME, &ts);
467	return ts.tv_sec + ts.tv_nsec * 1e-9;	570	return ts.tv_sec + ts.tv_nsec * 1e-9;
468	#else	571	}
		572	#endif
		573
469	struct timeval tv;	574	struct timeval tv;
470	gettimeofday (&tv, 0);	575	gettimeofday (&tv, 0);
471	return tv.tv_sec + tv.tv_usec * 1e-6;	576	return tv.tv_sec + tv.tv_usec * 1e-6;
472	#endif
473	}	577	}
474		578
475	ev_tstamp inline_size	579	inline_size ev_tstamp
476	get_clock (void)	580	get_clock (void)
477	{	581	{
478	#if EV_USE_MONOTONIC	582	#if EV_USE_MONOTONIC
479	if (expect_true (have_monotonic))	583	if (expect_true (have_monotonic))
480	{	584	{
…		…
513	struct timeval tv;	617	struct timeval tv;
514		618
515	tv.tv_sec = (time_t)delay;	619	tv.tv_sec = (time_t)delay;
516	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	620	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
517		621
		622	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		623	/* somehting nto guaranteed by newer posix versions, but guaranteed */
		624	/* by older ones */
518	select (0, 0, 0, 0, &tv);	625	select (0, 0, 0, 0, &tv);
519	#endif	626	#endif
520	}	627	}
521	}	628	}
522		629
523	/*****************************************************************************/	630	/*****************************************************************************/
524		631
525	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	632	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
526		633
527	int inline_size	634	/* find a suitable new size for the given array, */
		635	/* hopefully by rounding to a ncie-to-malloc size */
		636	inline_size int
528	array_nextsize (int elem, int cur, int cnt)	637	array_nextsize (int elem, int cur, int cnt)
529	{	638	{
530	int ncur = cur + 1;	639	int ncur = cur + 1;
531		640
532	do	641	do
…		…
549	array_realloc (int elem, void *base, int *cur, int cnt)	658	array_realloc (int elem, void *base, int *cur, int cnt)
550	{	659	{
551	*cur = array_nextsize (elem, *cur, cnt);	660	*cur = array_nextsize (elem, *cur, cnt);
552	return ev_realloc (base, elem * *cur);	661	return ev_realloc (base, elem * *cur);
553	}	662	}
		663
		664	#define array_init_zero(base,count) \
		665	memset ((void *)(base), 0, sizeof (*(base)) * (count))
554		666
555	#define array_needsize(type,base,cur,cnt,init) \	667	#define array_needsize(type,base,cur,cnt,init) \
556	if (expect_false ((cnt) > (cur))) \	668	if (expect_false ((cnt) > (cur))) \
557	{ \	669	{ \
558	int ocur_ = (cur); \	670	int ocur_ = (cur); \
…		…
570	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	682	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
571	}	683	}
572	#endif	684	#endif
573		685
574	#define array_free(stem, idx) \	686	#define array_free(stem, idx) \
575	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	687	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
576		688
577	/*****************************************************************************/	689	/*****************************************************************************/
		690
		691	/* dummy callback for pending events */
		692	static void noinline
		693	pendingcb (EV_P_ ev_prepare *w, int revents)
		694	{
		695	}
578		696
579	void noinline	697	void noinline
580	ev_feed_event (EV_P_ void *w, int revents)	698	ev_feed_event (EV_P_ void *w, int revents)
581	{	699	{
582	W w_ = (W)w;	700	W w_ = (W)w;
…		…
591	pendings [pri][w_->pending - 1].w = w_;	709	pendings [pri][w_->pending - 1].w = w_;
592	pendings [pri][w_->pending - 1].events = revents;	710	pendings [pri][w_->pending - 1].events = revents;
593	}	711	}
594	}	712	}
595		713
596	void inline_speed	714	inline_speed void
		715	feed_reverse (EV_P_ W w)
		716	{
		717	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		718	rfeeds [rfeedcnt++] = w;
		719	}
		720
		721	inline_size void
		722	feed_reverse_done (EV_P_ int revents)
		723	{
		724	do
		725	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		726	while (rfeedcnt);
		727	}
		728
		729	inline_speed void
597	queue_events (EV_P_ W *events, int eventcnt, int type)	730	queue_events (EV_P_ W *events, int eventcnt, int type)
598	{	731	{
599	int i;	732	int i;
600		733
601	for (i = 0; i < eventcnt; ++i)	734	for (i = 0; i < eventcnt; ++i)
602	ev_feed_event (EV_A_ events [i], type);	735	ev_feed_event (EV_A_ events [i], type);
603	}	736	}
604		737
605	/*****************************************************************************/	738	/*****************************************************************************/
606		739
607	void inline_size	740	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)	741	fd_event (EV_P_ int fd, int revents)
622	{	742	{
623	ANFD *anfd = anfds + fd;	743	ANFD *anfd = anfds + fd;
624	ev_io *w;	744	ev_io *w;
625		745
…		…
637	{	757	{
638	if (fd >= 0 && fd < anfdmax)	758	if (fd >= 0 && fd < anfdmax)
639	fd_event (EV_A_ fd, revents);	759	fd_event (EV_A_ fd, revents);
640	}	760	}
641		761
642	void inline_size	762	/* make sure the external fd watch events are in-sync */
		763	/* with the kernel/libev internal state */
		764	inline_size void
643	fd_reify (EV_P)	765	fd_reify (EV_P)
644	{	766	{
645	int i;	767	int i;
646		768
647	for (i = 0; i < fdchangecnt; ++i)	769	for (i = 0; i < fdchangecnt; ++i)
…		…
656	events |= (unsigned char)w->events;	778	events |= (unsigned char)w->events;
657		779
658	#if EV_SELECT_IS_WINSOCKET	780	#if EV_SELECT_IS_WINSOCKET
659	if (events)	781	if (events)
660	{	782	{
661	unsigned long argp;	783	unsigned long arg;
662	#ifdef EV_FD_TO_WIN32_HANDLE	784	#ifdef EV_FD_TO_WIN32_HANDLE
663	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	785	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
664	#else	786	#else
665	anfd->handle = _get_osfhandle (fd);	787	anfd->handle = _get_osfhandle (fd);
666	#endif	788	#endif
667	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	789	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
668	}	790	}
669	#endif	791	#endif
670		792
671	{	793	{
672	unsigned char o_events = anfd->events;	794	unsigned char o_events = anfd->events;
673	unsigned char o_reify = anfd->reify;	795	unsigned char o_reify = anfd->reify;
674		796
675	anfd->reify = 0;	797	anfd->reify = 0;
676	anfd->events = events;	798	anfd->events = events;
677		799
678	if (o_events != events || o_reify & EV_IOFDSET)	800	if (o_events != events || o_reify & EV__IOFDSET)
679	backend_modify (EV_A_ fd, o_events, events);	801	backend_modify (EV_A_ fd, o_events, events);
680	}	802	}
681	}	803	}
682		804
683	fdchangecnt = 0;	805	fdchangecnt = 0;
684	}	806	}
685		807
686	void inline_size	808	/* something about the given fd changed */
		809	inline_size void
687	fd_change (EV_P_ int fd, int flags)	810	fd_change (EV_P_ int fd, int flags)
688	{	811	{
689	unsigned char reify = anfds [fd].reify;	812	unsigned char reify = anfds [fd].reify;
690	anfds [fd].reify |= flags;	813	anfds [fd].reify |= flags;
691		814
…		…
695	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	818	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
696	fdchanges [fdchangecnt - 1] = fd;	819	fdchanges [fdchangecnt - 1] = fd;
697	}	820	}
698	}	821	}
699		822
700	void inline_speed	823	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		824	inline_speed void
701	fd_kill (EV_P_ int fd)	825	fd_kill (EV_P_ int fd)
702	{	826	{
703	ev_io *w;	827	ev_io *w;
704		828
705	while ((w = (ev_io *)anfds [fd].head))	829	while ((w = (ev_io *)anfds [fd].head))
…		…
707	ev_io_stop (EV_A_ w);	831	ev_io_stop (EV_A_ w);
708	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	832	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
709	}	833	}
710	}	834	}
711		835
712	int inline_size	836	/* check whether the given fd is atcually valid, for error recovery */
		837	inline_size int
713	fd_valid (int fd)	838	fd_valid (int fd)
714	{	839	{
715	#ifdef _WIN32	840	#ifdef _WIN32
716	return _get_osfhandle (fd) != -1;	841	return _get_osfhandle (fd) != -1;
717	#else	842	#else
…		…
725	{	850	{
726	int fd;	851	int fd;
727		852
728	for (fd = 0; fd < anfdmax; ++fd)	853	for (fd = 0; fd < anfdmax; ++fd)
729	if (anfds [fd].events)	854	if (anfds [fd].events)
730	if (!fd_valid (fd) == -1 && errno == EBADF)	855	if (!fd_valid (fd) && errno == EBADF)
731	fd_kill (EV_A_ fd);	856	fd_kill (EV_A_ fd);
732	}	857	}
733		858
734	/* called on ENOMEM in select/poll to kill some fds and retry */	859	/* called on ENOMEM in select/poll to kill some fds and retry */
735	static void noinline	860	static void noinline
…		…
753		878
754	for (fd = 0; fd < anfdmax; ++fd)	879	for (fd = 0; fd < anfdmax; ++fd)
755	if (anfds [fd].events)	880	if (anfds [fd].events)
756	{	881	{
757	anfds [fd].events = 0;	882	anfds [fd].events = 0;
		883	anfds [fd].emask = 0;
758	fd_change (EV_A_ fd, EV_IOFDSET | 1);	884	fd_change (EV_A_ fd, EV__IOFDSET | 1);
759	}	885	}
760	}	886	}
761		887
762	/*****************************************************************************/	888	/*****************************************************************************/
		889
		890	/*
		891	* the heap functions want a real array index. array index 0 uis guaranteed to not
		892	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
		893	* the branching factor of the d-tree.
		894	*/
763		895
764	/*	896	/*
765	* at the moment we allow libev the luxury of two heaps,	897	* 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	898	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
767	* which is more cache-efficient.	899	* which is more cache-efficient.
768	* the difference is about 5% with 50000+ watchers.	900	* the difference is about 5% with 50000+ watchers.
769	*/	901	*/
770	#define USE_4HEAP !EV_MINIMAL
771	#if USE_4HEAP	902	#if EV_USE_4HEAP
772		903
773	#define DHEAP 4	904	#define DHEAP 4
774	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	905	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		906	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
		907	#define UPHEAP_DONE(p,k) ((p) == (k))
775		908
776	/* towards the root */	909	/* away from the root */
777	void inline_speed	910	inline_speed void
778	upheap (WT *heap, int k)	911	downheap (ANHE *heap, int N, int k)
779	{	912	{
780	WT w = heap [k];	913	ANHE he = heap [k];
781	ev_tstamp w_at = w->at;	914	ANHE *E = heap + N + HEAP0;
782		915
783	for (;;)	916	for (;;)
784	{	917	{
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;	918	ev_tstamp minat;
809	WT *minpos;	919	ANHE *minpos;
810	WT *pos = heap + DHEAP * (k - HEAP0) + HEAP0;	920	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
811		921
812	// find minimum child	922	/* find minimum child */
813	if (expect_true (pos + DHEAP - 1 < E))	923	if (expect_true (pos + DHEAP - 1 < E))
814	{	924	{
815	/* fast path */ (minpos = pos + 0), (minat = (*minpos)->at);	925	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
816	if (pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at);	926	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
817	if (pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at);	927	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
818	if (pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at);	928	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
819	}	929	}
820	else if (pos < E)	930	else if (pos < E)
821	{	931	{
822	/* slow path */ (minpos = pos + 0), (minat = (*minpos)->at);	932	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
823	if (pos + 1 < E && pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at);	933	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
824	if (pos + 2 < E && pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at);	934	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
825	if (pos + 3 < E && pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at);	935	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
826	}	936	}
827	else	937	else
828	break;	938	break;
829		939
830	if (w->at <= minat)	940	if (ANHE_at (he) <= minat)
831	break;	941	break;
832		942
833	ev_active (*minpos) = k;
834	heap [k] = *minpos;	943	heap [k] = *minpos;
		944	ev_active (ANHE_w (*minpos)) = k;
835		945
836	k = minpos - heap;	946	k = minpos - heap;
837	}	947	}
838		948
839	heap [k] = w;	949	heap [k] = he;
840	ev_active (heap [k]) = k;	950	ev_active (ANHE_w (he)) = k;
841	}	951	}
842		952
843	#else // 4HEAP	953	#else /* 4HEAP */
844		954
845	#define HEAP0 1	955	#define HEAP0 1
		956	#define HPARENT(k) ((k) >> 1)
		957	#define UPHEAP_DONE(p,k) (!(p))
846		958
847	/* towards the root */	959	/* away from the root */
848	void inline_speed	960	inline_speed void
849	upheap (WT *heap, int k)	961	downheap (ANHE *heap, int N, int k)
850	{	962	{
851	WT w = heap [k];	963	ANHE he = heap [k];
852		964
853	for (;;)	965	for (;;)
854	{	966	{
855	int p = k >> 1;	967	int c = k << 1;
856		968
857	/* maybe we could use a dummy element at heap [0]? */	969	if (c > N + HEAP0 - 1)
858	if (!p || heap [p]->at <= w->at)
859	break;	970	break;
860		971
861	heap [k] = heap [p];	972	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
862	ev_active (heap [k]) = k;	973	? 1 : 0;
863	k = p;
864	}
865		974
866	heap [k] = w;	975	if (ANHE_at (he) <= ANHE_at (heap [c]))
867	ev_active (heap [k]) = k;
868	}
869
870	/* away from the root */
871	void inline_speed
872	downheap (WT *heap, int N, int k)
873	{
874	WT w = heap [k];
875
876	for (;;)
877	{
878	int c = k << 1;
879
880	if (c > N)
881	break;	976	break;
882		977
883	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
884	? 1 : 0;
885
886	if (w->at <= heap [c]->at)
887	break;
888
889	heap [k] = heap [c];	978	heap [k] = heap [c];
890	((W)heap [k])->active = k;	979	ev_active (ANHE_w (heap [k])) = k;
891		980
892	k = c;	981	k = c;
893	}	982	}
894		983
895	heap [k] = w;	984	heap [k] = he;
		985	ev_active (ANHE_w (he)) = k;
		986	}
		987	#endif
		988
		989	/* towards the root */
		990	inline_speed void
		991	upheap (ANHE *heap, int k)
		992	{
		993	ANHE he = heap [k];
		994
		995	for (;;)
		996	{
		997	int p = HPARENT (k);
		998
		999	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		1000	break;
		1001
		1002	heap [k] = heap [p];
896	ev_active (heap [k]) = k;	1003	ev_active (ANHE_w (heap [k])) = k;
897	}	1004	k = p;
898	#endif	1005	}
899		1006
900	void inline_size	1007	heap [k] = he;
		1008	ev_active (ANHE_w (he)) = k;
		1009	}
		1010
		1011	/* move an element suitably so it is in a correct place */
		1012	inline_size void
901	adjustheap (WT *heap, int N, int k)	1013	adjustheap (ANHE *heap, int N, int k)
902	{	1014	{
		1015	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
903	upheap (heap, k);	1016	upheap (heap, k);
		1017	else
904	downheap (heap, N, k);	1018	downheap (heap, N, k);
		1019	}
		1020
		1021	/* rebuild the heap: this function is used only once and executed rarely */
		1022	inline_size void
		1023	reheap (ANHE *heap, int N)
		1024	{
		1025	int i;
		1026
		1027	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		1028	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		1029	for (i = 0; i < N; ++i)
		1030	upheap (heap, i + HEAP0);
905	}	1031	}
906		1032
907	/*****************************************************************************/	1033	/*****************************************************************************/
908		1034
		1035	/* associate signal watchers to a signal signal */
909	typedef struct	1036	typedef struct
910	{	1037	{
911	WL head;	1038	WL head;
912	EV_ATOMIC_T gotsig;	1039	EV_ATOMIC_T gotsig;
913	} ANSIG;	1040	} ANSIG;
…		…
915	static ANSIG *signals;	1042	static ANSIG *signals;
916	static int signalmax;	1043	static int signalmax;
917		1044
918	static EV_ATOMIC_T gotsig;	1045	static EV_ATOMIC_T gotsig;
919		1046
920	void inline_size
921	signals_init (ANSIG *base, int count)
922	{
923	while (count--)
924	{
925	base->head = 0;
926	base->gotsig = 0;
927
928	++base;
929	}
930	}
931
932	/*****************************************************************************/	1047	/*****************************************************************************/
933		1048
934	void inline_speed	1049	/* used to prepare libev internal fd's */
		1050	/* this is not fork-safe */
		1051	inline_speed void
935	fd_intern (int fd)	1052	fd_intern (int fd)
936	{	1053	{
937	#ifdef _WIN32	1054	#ifdef _WIN32
938	int arg = 1;	1055	unsigned long arg = 1;
939	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1056	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
940	#else	1057	#else
941	fcntl (fd, F_SETFD, FD_CLOEXEC);	1058	fcntl (fd, F_SETFD, FD_CLOEXEC);
942	fcntl (fd, F_SETFL, O_NONBLOCK);	1059	fcntl (fd, F_SETFL, O_NONBLOCK);
943	#endif	1060	#endif
944	}	1061	}
945		1062
946	static void noinline	1063	static void noinline
947	evpipe_init (EV_P)	1064	evpipe_init (EV_P)
948	{	1065	{
949	if (!ev_is_active (&pipeev))	1066	if (!ev_is_active (&pipe_w))
950	{	1067	{
951	#if EV_USE_EVENTFD	1068	#if EV_USE_EVENTFD
952	if ((evfd = eventfd (0, 0)) >= 0)	1069	if ((evfd = eventfd (0, 0)) >= 0)
953	{	1070	{
954	evpipe [0] = -1;	1071	evpipe [0] = -1;
955	fd_intern (evfd);	1072	fd_intern (evfd);
956	ev_io_set (&pipeev, evfd, EV_READ);	1073	ev_io_set (&pipe_w, evfd, EV_READ);
957	}	1074	}
958	else	1075	else
959	#endif	1076	#endif
960	{	1077	{
961	while (pipe (evpipe))	1078	while (pipe (evpipe))
962	syserr ("(libev) error creating signal/async pipe");	1079	ev_syserr ("(libev) error creating signal/async pipe");
963		1080
964	fd_intern (evpipe [0]);	1081	fd_intern (evpipe [0]);
965	fd_intern (evpipe [1]);	1082	fd_intern (evpipe [1]);
966	ev_io_set (&pipeev, evpipe [0], EV_READ);	1083	ev_io_set (&pipe_w, evpipe [0], EV_READ);
967	}	1084	}
968		1085
969	ev_io_start (EV_A_ &pipeev);	1086	ev_io_start (EV_A_ &pipe_w);
970	ev_unref (EV_A); /* watcher should not keep loop alive */	1087	ev_unref (EV_A); /* watcher should not keep loop alive */
971	}	1088	}
972	}	1089	}
973		1090
974	void inline_size	1091	inline_size void
975	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1092	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
976	{	1093	{
977	if (!*flag)	1094	if (!*flag)
978	{	1095	{
979	int old_errno = errno; /* save errno because write might clobber it */	1096	int old_errno = errno; /* save errno because write might clobber it */
…		…
992		1109
993	errno = old_errno;	1110	errno = old_errno;
994	}	1111	}
995	}	1112	}
996		1113
		1114	/* called whenever the libev signal pipe */
		1115	/* got some events (signal, async) */
997	static void	1116	static void
998	pipecb (EV_P_ ev_io *iow, int revents)	1117	pipecb (EV_P_ ev_io *iow, int revents)
999	{	1118	{
1000	#if EV_USE_EVENTFD	1119	#if EV_USE_EVENTFD
1001	if (evfd >= 0)	1120	if (evfd >= 0)
…		…
1057	ev_feed_signal_event (EV_P_ int signum)	1176	ev_feed_signal_event (EV_P_ int signum)
1058	{	1177	{
1059	WL w;	1178	WL w;
1060		1179
1061	#if EV_MULTIPLICITY	1180	#if EV_MULTIPLICITY
1062	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1181	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1063	#endif	1182	#endif
1064		1183
1065	--signum;	1184	--signum;
1066		1185
1067	if (signum < 0 || signum >= signalmax)	1186	if (signum < 0 || signum >= signalmax)
…		…
1083		1202
1084	#ifndef WIFCONTINUED	1203	#ifndef WIFCONTINUED
1085	# define WIFCONTINUED(status) 0	1204	# define WIFCONTINUED(status) 0
1086	#endif	1205	#endif
1087		1206
1088	void inline_speed	1207	/* handle a single child status event */
		1208	inline_speed void
1089	child_reap (EV_P_ int chain, int pid, int status)	1209	child_reap (EV_P_ int chain, int pid, int status)
1090	{	1210	{
1091	ev_child *w;	1211	ev_child *w;
1092	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1212	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1093		1213
…		…
1106		1226
1107	#ifndef WCONTINUED	1227	#ifndef WCONTINUED
1108	# define WCONTINUED 0	1228	# define WCONTINUED 0
1109	#endif	1229	#endif
1110		1230
		1231	/* called on sigchld etc., calls waitpid */
1111	static void	1232	static void
1112	childcb (EV_P_ ev_signal *sw, int revents)	1233	childcb (EV_P_ ev_signal *sw, int revents)
1113	{	1234	{
1114	int pid, status;	1235	int pid, status;
1115		1236
…		…
1196	/* kqueue is borked on everything but netbsd apparently */	1317	/* kqueue is borked on everything but netbsd apparently */
1197	/* it usually doesn't work correctly on anything but sockets and pipes */	1318	/* it usually doesn't work correctly on anything but sockets and pipes */
1198	flags &= ~EVBACKEND_KQUEUE;	1319	flags &= ~EVBACKEND_KQUEUE;
1199	#endif	1320	#endif
1200	#ifdef __APPLE__	1321	#ifdef __APPLE__
1201	// flags &= ~EVBACKEND_KQUEUE; for documentation	1322	/* only select works correctly on that "unix-certified" platform */
1202	flags &= ~EVBACKEND_POLL;	1323	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1324	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1203	#endif	1325	#endif
1204		1326
1205	return flags;	1327	return flags;
1206	}	1328	}
1207		1329
…		…
1239	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1361	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1240	{	1362	{
1241	timeout_blocktime = interval;	1363	timeout_blocktime = interval;
1242	}	1364	}
1243		1365
		1366	/* initialise a loop structure, must be zero-initialised */
1244	static void noinline	1367	static void noinline
1245	loop_init (EV_P_ unsigned int flags)	1368	loop_init (EV_P_ unsigned int flags)
1246	{	1369	{
1247	if (!backend)	1370	if (!backend)
1248	{	1371	{
		1372	#if EV_USE_REALTIME
		1373	if (!have_realtime)
		1374	{
		1375	struct timespec ts;
		1376
		1377	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1378	have_realtime = 1;
		1379	}
		1380	#endif
		1381
1249	#if EV_USE_MONOTONIC	1382	#if EV_USE_MONOTONIC
		1383	if (!have_monotonic)
1250	{	1384	{
1251	struct timespec ts;	1385	struct timespec ts;
		1386
1252	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1387	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1253	have_monotonic = 1;	1388	have_monotonic = 1;
1254	}	1389	}
1255	#endif	1390	#endif
1256		1391
1257	ev_rt_now = ev_time ();	1392	ev_rt_now = ev_time ();
1258	mn_now = get_clock ();	1393	mn_now = get_clock ();
1259	now_floor = mn_now;	1394	now_floor = mn_now;
…		…
1296	#endif	1431	#endif
1297	#if EV_USE_SELECT	1432	#if EV_USE_SELECT
1298	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1433	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1299	#endif	1434	#endif
1300		1435
		1436	ev_prepare_init (&pending_w, pendingcb);
		1437
1301	ev_init (&pipeev, pipecb);	1438	ev_init (&pipe_w, pipecb);
1302	ev_set_priority (&pipeev, EV_MAXPRI);	1439	ev_set_priority (&pipe_w, EV_MAXPRI);
1303	}	1440	}
1304	}	1441	}
1305		1442
		1443	/* free up a loop structure */
1306	static void noinline	1444	static void noinline
1307	loop_destroy (EV_P)	1445	loop_destroy (EV_P)
1308	{	1446	{
1309	int i;	1447	int i;
1310		1448
1311	if (ev_is_active (&pipeev))	1449	if (ev_is_active (&pipe_w))
1312	{	1450	{
1313	ev_ref (EV_A); /* signal watcher */	1451	ev_ref (EV_A); /* signal watcher */
1314	ev_io_stop (EV_A_ &pipeev);	1452	ev_io_stop (EV_A_ &pipe_w);
1315		1453
1316	#if EV_USE_EVENTFD	1454	#if EV_USE_EVENTFD
1317	if (evfd >= 0)	1455	if (evfd >= 0)
1318	close (evfd);	1456	close (evfd);
1319	#endif	1457	#endif
…		…
1358	}	1496	}
1359		1497
1360	ev_free (anfds); anfdmax = 0;	1498	ev_free (anfds); anfdmax = 0;
1361		1499
1362	/* have to use the microsoft-never-gets-it-right macro */	1500	/* have to use the microsoft-never-gets-it-right macro */
		1501	array_free (rfeed, EMPTY);
1363	array_free (fdchange, EMPTY);	1502	array_free (fdchange, EMPTY);
1364	array_free (timer, EMPTY);	1503	array_free (timer, EMPTY);
1365	#if EV_PERIODIC_ENABLE	1504	#if EV_PERIODIC_ENABLE
1366	array_free (periodic, EMPTY);	1505	array_free (periodic, EMPTY);
1367	#endif	1506	#endif
…		…
1376		1515
1377	backend = 0;	1516	backend = 0;
1378	}	1517	}
1379		1518
1380	#if EV_USE_INOTIFY	1519	#if EV_USE_INOTIFY
1381	void inline_size infy_fork (EV_P);	1520	inline_size void infy_fork (EV_P);
1382	#endif	1521	#endif
1383		1522
1384	void inline_size	1523	inline_size void
1385	loop_fork (EV_P)	1524	loop_fork (EV_P)
1386	{	1525	{
1387	#if EV_USE_PORT	1526	#if EV_USE_PORT
1388	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1527	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1389	#endif	1528	#endif
…		…
1395	#endif	1534	#endif
1396	#if EV_USE_INOTIFY	1535	#if EV_USE_INOTIFY
1397	infy_fork (EV_A);	1536	infy_fork (EV_A);
1398	#endif	1537	#endif
1399		1538
1400	if (ev_is_active (&pipeev))	1539	if (ev_is_active (&pipe_w))
1401	{	1540	{
1402	/* this "locks" the handlers against writing to the pipe */	1541	/* this "locks" the handlers against writing to the pipe */
1403	/* while we modify the fd vars */	1542	/* while we modify the fd vars */
1404	gotsig = 1;	1543	gotsig = 1;
1405	#if EV_ASYNC_ENABLE	1544	#if EV_ASYNC_ENABLE
1406	gotasync = 1;	1545	gotasync = 1;
1407	#endif	1546	#endif
1408		1547
1409	ev_ref (EV_A);	1548	ev_ref (EV_A);
1410	ev_io_stop (EV_A_ &pipeev);	1549	ev_io_stop (EV_A_ &pipe_w);
1411		1550
1412	#if EV_USE_EVENTFD	1551	#if EV_USE_EVENTFD
1413	if (evfd >= 0)	1552	if (evfd >= 0)
1414	close (evfd);	1553	close (evfd);
1415	#endif	1554	#endif
…		…
1420	close (evpipe [1]);	1559	close (evpipe [1]);
1421	}	1560	}
1422		1561
1423	evpipe_init (EV_A);	1562	evpipe_init (EV_A);
1424	/* now iterate over everything, in case we missed something */	1563	/* now iterate over everything, in case we missed something */
1425	pipecb (EV_A_ &pipeev, EV_READ);	1564	pipecb (EV_A_ &pipe_w, EV_READ);
1426	}	1565	}
1427		1566
1428	postfork = 0;	1567	postfork = 0;
1429	}	1568	}
1430		1569
1431	#if EV_MULTIPLICITY	1570	#if EV_MULTIPLICITY
		1571
1432	struct ev_loop *	1572	struct ev_loop *
1433	ev_loop_new (unsigned int flags)	1573	ev_loop_new (unsigned int flags)
1434	{	1574	{
1435	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1575	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1436		1576
…		…
1454	void	1594	void
1455	ev_loop_fork (EV_P)	1595	ev_loop_fork (EV_P)
1456	{	1596	{
1457	postfork = 1; /* must be in line with ev_default_fork */	1597	postfork = 1; /* must be in line with ev_default_fork */
1458	}	1598	}
		1599
		1600	#if EV_VERIFY
		1601	static void noinline
		1602	verify_watcher (EV_P_ W w)
		1603	{
		1604	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1605
		1606	if (w->pending)
		1607	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1608	}
		1609
		1610	static void noinline
		1611	verify_heap (EV_P_ ANHE *heap, int N)
		1612	{
		1613	int i;
		1614
		1615	for (i = HEAP0; i < N + HEAP0; ++i)
		1616	{
		1617	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1618	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1619	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1620
		1621	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1622	}
		1623	}
		1624
		1625	static void noinline
		1626	array_verify (EV_P_ W *ws, int cnt)
		1627	{
		1628	while (cnt--)
		1629	{
		1630	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1631	verify_watcher (EV_A_ ws [cnt]);
		1632	}
		1633	}
		1634	#endif
		1635
		1636	void
		1637	ev_loop_verify (EV_P)
		1638	{
		1639	#if EV_VERIFY
		1640	int i;
		1641	WL w;
		1642
		1643	assert (activecnt >= -1);
		1644
		1645	assert (fdchangemax >= fdchangecnt);
		1646	for (i = 0; i < fdchangecnt; ++i)
		1647	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1648
		1649	assert (anfdmax >= 0);
		1650	for (i = 0; i < anfdmax; ++i)
		1651	for (w = anfds [i].head; w; w = w->next)
		1652	{
		1653	verify_watcher (EV_A_ (W)w);
		1654	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1655	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1656	}
		1657
		1658	assert (timermax >= timercnt);
		1659	verify_heap (EV_A_ timers, timercnt);
		1660
		1661	#if EV_PERIODIC_ENABLE
		1662	assert (periodicmax >= periodiccnt);
		1663	verify_heap (EV_A_ periodics, periodiccnt);
		1664	#endif
		1665
		1666	for (i = NUMPRI; i--; )
		1667	{
		1668	assert (pendingmax [i] >= pendingcnt [i]);
		1669	#if EV_IDLE_ENABLE
		1670	assert (idleall >= 0);
		1671	assert (idlemax [i] >= idlecnt [i]);
		1672	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		1673	#endif
		1674	}
		1675
		1676	#if EV_FORK_ENABLE
		1677	assert (forkmax >= forkcnt);
		1678	array_verify (EV_A_ (W *)forks, forkcnt);
		1679	#endif
		1680
		1681	#if EV_ASYNC_ENABLE
		1682	assert (asyncmax >= asynccnt);
		1683	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1684	#endif
		1685
		1686	assert (preparemax >= preparecnt);
		1687	array_verify (EV_A_ (W *)prepares, preparecnt);
		1688
		1689	assert (checkmax >= checkcnt);
		1690	array_verify (EV_A_ (W *)checks, checkcnt);
		1691
		1692	# if 0
		1693	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1694	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1459	#endif	1695	# endif
		1696	#endif
		1697	}
		1698
		1699	#endif /* multiplicity */
1460		1700
1461	#if EV_MULTIPLICITY	1701	#if EV_MULTIPLICITY
1462	struct ev_loop *	1702	struct ev_loop *
1463	ev_default_loop_init (unsigned int flags)	1703	ev_default_loop_init (unsigned int flags)
1464	#else	1704	#else
…		…
1497	{	1737	{
1498	#if EV_MULTIPLICITY	1738	#if EV_MULTIPLICITY
1499	struct ev_loop *loop = ev_default_loop_ptr;	1739	struct ev_loop *loop = ev_default_loop_ptr;
1500	#endif	1740	#endif
1501		1741
		1742	ev_default_loop_ptr = 0;
		1743
1502	#ifndef _WIN32	1744	#ifndef _WIN32
1503	ev_ref (EV_A); /* child watcher */	1745	ev_ref (EV_A); /* child watcher */
1504	ev_signal_stop (EV_A_ &childev);	1746	ev_signal_stop (EV_A_ &childev);
1505	#endif	1747	#endif
1506		1748
…		…
1512	{	1754	{
1513	#if EV_MULTIPLICITY	1755	#if EV_MULTIPLICITY
1514	struct ev_loop *loop = ev_default_loop_ptr;	1756	struct ev_loop *loop = ev_default_loop_ptr;
1515	#endif	1757	#endif
1516		1758
1517	if (backend)
1518	postfork = 1; /* must be in line with ev_loop_fork */	1759	postfork = 1; /* must be in line with ev_loop_fork */
1519	}	1760	}
1520		1761
1521	/*****************************************************************************/	1762	/*****************************************************************************/
1522		1763
1523	void	1764	void
1524	ev_invoke (EV_P_ void *w, int revents)	1765	ev_invoke (EV_P_ void *w, int revents)
1525	{	1766	{
1526	EV_CB_INVOKE ((W)w, revents);	1767	EV_CB_INVOKE ((W)w, revents);
1527	}	1768	}
1528		1769
1529	void inline_speed	1770	inline_speed void
1530	call_pending (EV_P)	1771	call_pending (EV_P)
1531	{	1772	{
1532	int pri;	1773	int pri;
1533		1774
1534	for (pri = NUMPRI; pri--; )	1775	for (pri = NUMPRI; pri--; )
1535	while (pendingcnt [pri])	1776	while (pendingcnt [pri])
1536	{	1777	{
1537	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1778	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1538		1779
1539	if (expect_true (p->w))
1540	{
1541	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1780	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1781	/* ^ this is no longer true, as pending_w could be here */
1542		1782
1543	p->w->pending = 0;	1783	p->w->pending = 0;
1544	EV_CB_INVOKE (p->w, p->events);	1784	EV_CB_INVOKE (p->w, p->events);
1545	}	1785	EV_FREQUENT_CHECK;
1546	}	1786	}
1547	}	1787	}
1548		1788
1549	#if EV_IDLE_ENABLE	1789	#if EV_IDLE_ENABLE
1550	void inline_size	1790	/* make idle watchers pending. this handles the "call-idle */
		1791	/* only when higher priorities are idle" logic */
		1792	inline_size void
1551	idle_reify (EV_P)	1793	idle_reify (EV_P)
1552	{	1794	{
1553	if (expect_false (idleall))	1795	if (expect_false (idleall))
1554	{	1796	{
1555	int pri;	1797	int pri;
…		…
1567	}	1809	}
1568	}	1810	}
1569	}	1811	}
1570	#endif	1812	#endif
1571		1813
1572	void inline_size	1814	/* make timers pending */
		1815	inline_size void
1573	timers_reify (EV_P)	1816	timers_reify (EV_P)
1574	{	1817	{
		1818	EV_FREQUENT_CHECK;
		1819
1575	while (timercnt && ev_at (timers [HEAP0]) <= mn_now)	1820	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1576	{	1821	{
1577	ev_timer *w = (ev_timer *)timers [HEAP0];	1822	do
1578
1579	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1580
1581	/* first reschedule or stop timer */
1582	if (w->repeat)
1583	{	1823	{
		1824	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1825
		1826	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		1827
		1828	/* first reschedule or stop timer */
		1829	if (w->repeat)
		1830	{
		1831	ev_at (w) += w->repeat;
		1832	if (ev_at (w) < mn_now)
		1833	ev_at (w) = mn_now;
		1834
1584	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1835	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1585		1836
1586	ev_at (w) += w->repeat;	1837	ANHE_at_cache (timers [HEAP0]);
1587	if (ev_at (w) < mn_now)
1588	ev_at (w) = mn_now;
1589
1590	downheap (timers, timercnt, HEAP0);	1838	downheap (timers, timercnt, HEAP0);
		1839	}
		1840	else
		1841	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1842
		1843	EV_FREQUENT_CHECK;
		1844	feed_reverse (EV_A_ (W)w);
1591	}	1845	}
1592	else	1846	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1593	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1594		1847
1595	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1848	feed_reverse_done (EV_A_ EV_TIMEOUT);
1596	}	1849	}
1597	}	1850	}
1598		1851
1599	#if EV_PERIODIC_ENABLE	1852	#if EV_PERIODIC_ENABLE
1600	void inline_size	1853	/* make periodics pending */
		1854	inline_size void
1601	periodics_reify (EV_P)	1855	periodics_reify (EV_P)
1602	{	1856	{
		1857	EV_FREQUENT_CHECK;
		1858
1603	while (periodiccnt && ev_at (periodics [HEAP0]) <= ev_rt_now)	1859	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1604	{	1860	{
1605	ev_periodic *w = (ev_periodic *)periodics [HEAP0];	1861	int feed_count = 0;
1606		1862
1607	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	1863	do
1608
1609	/* first reschedule or stop timer */
1610	if (w->reschedule_cb)
1611	{	1864	{
		1865	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1866
		1867	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		1868
		1869	/* first reschedule or stop timer */
		1870	if (w->reschedule_cb)
		1871	{
1612	ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);	1872	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1873
1613	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));	1874	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		1875
		1876	ANHE_at_cache (periodics [HEAP0]);
1614	downheap (periodics, periodiccnt, 1);	1877	downheap (periodics, periodiccnt, HEAP0);
		1878	}
		1879	else if (w->interval)
		1880	{
		1881	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1882	/* if next trigger time is not sufficiently in the future, put it there */
		1883	/* this might happen because of floating point inexactness */
		1884	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1885	{
		1886	ev_at (w) += w->interval;
		1887
		1888	/* if interval is unreasonably low we might still have a time in the past */
		1889	/* so correct this. this will make the periodic very inexact, but the user */
		1890	/* has effectively asked to get triggered more often than possible */
		1891	if (ev_at (w) < ev_rt_now)
		1892	ev_at (w) = ev_rt_now;
		1893	}
		1894
		1895	ANHE_at_cache (periodics [HEAP0]);
		1896	downheap (periodics, periodiccnt, HEAP0);
		1897	}
		1898	else
		1899	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1900
		1901	EV_FREQUENT_CHECK;
		1902	feed_reverse (EV_A_ (W)w);
1615	}	1903	}
1616	else if (w->interval)	1904	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1617	{
1618	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1619	if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1620	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1621	downheap (periodics, periodiccnt, HEAP0);
1622	}
1623	else
1624	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1625		1905
1626	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1906	feed_reverse_done (EV_A_ EV_PERIODIC);
1627	}	1907	}
1628	}	1908	}
1629		1909
		1910	/* simply recalculate all periodics */
		1911	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1630	static void noinline	1912	static void noinline
1631	periodics_reschedule (EV_P)	1913	periodics_reschedule (EV_P)
1632	{	1914	{
1633	int i;	1915	int i;
1634		1916
1635	/* adjust periodics after time jump */	1917	/* adjust periodics after time jump */
1636	for (i = 1; i <= periodiccnt; ++i)	1918	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1637	{	1919	{
1638	ev_periodic *w = (ev_periodic *)periodics [i];	1920	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1639		1921
1640	if (w->reschedule_cb)	1922	if (w->reschedule_cb)
1641	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1923	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1642	else if (w->interval)	1924	else if (w->interval)
1643	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	1925	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1926
		1927	ANHE_at_cache (periodics [i]);
		1928	}
		1929
		1930	reheap (periodics, periodiccnt);
		1931	}
		1932	#endif
		1933
		1934	/* adjust all timers by a given offset */
		1935	static void noinline
		1936	timers_reschedule (EV_P_ ev_tstamp adjust)
		1937	{
		1938	int i;
		1939
		1940	for (i = 0; i < timercnt; ++i)
1644	}	1941	{
1645		1942	ANHE *he = timers + i + HEAP0;
1646	/* now rebuild the heap */	1943	ANHE_w (*he)->at += adjust;
1647	for (i = periodiccnt >> 1; --i; )	1944	ANHE_at_cache (*he);
1648	downheap (periodics, periodiccnt, i + HEAP0);	1945	}
1649	}	1946	}
1650	#endif
1651		1947
1652	void inline_speed	1948	/* fetch new monotonic and realtime times from the kernel */
		1949	/* also detetc if there was a timejump, and act accordingly */
		1950	inline_speed void
1653	time_update (EV_P_ ev_tstamp max_block)	1951	time_update (EV_P_ ev_tstamp max_block)
1654	{	1952	{
1655	int i;
1656
1657	#if EV_USE_MONOTONIC	1953	#if EV_USE_MONOTONIC
1658	if (expect_true (have_monotonic))	1954	if (expect_true (have_monotonic))
1659	{	1955	{
		1956	int i;
1660	ev_tstamp odiff = rtmn_diff;	1957	ev_tstamp odiff = rtmn_diff;
1661		1958
1662	mn_now = get_clock ();	1959	mn_now = get_clock ();
1663		1960
1664	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	1961	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1690	ev_rt_now = ev_time ();	1987	ev_rt_now = ev_time ();
1691	mn_now = get_clock ();	1988	mn_now = get_clock ();
1692	now_floor = mn_now;	1989	now_floor = mn_now;
1693	}	1990	}
1694		1991
		1992	/* no timer adjustment, as the monotonic clock doesn't jump */
		1993	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1695	# if EV_PERIODIC_ENABLE	1994	# if EV_PERIODIC_ENABLE
1696	periodics_reschedule (EV_A);	1995	periodics_reschedule (EV_A);
1697	# endif	1996	# endif
1698	/* no timer adjustment, as the monotonic clock doesn't jump */
1699	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1700	}	1997	}
1701	else	1998	else
1702	#endif	1999	#endif
1703	{	2000	{
1704	ev_rt_now = ev_time ();	2001	ev_rt_now = ev_time ();
1705		2002
1706	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2003	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1707	{	2004	{
		2005	/* adjust timers. this is easy, as the offset is the same for all of them */
		2006	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1708	#if EV_PERIODIC_ENABLE	2007	#if EV_PERIODIC_ENABLE
1709	periodics_reschedule (EV_A);	2008	periodics_reschedule (EV_A);
1710	#endif	2009	#endif
1711	/* adjust timers. this is easy, as the offset is the same for all of them */
1712	for (i = 1; i <= timercnt; ++i)
1713	ev_at (timers [i]) += ev_rt_now - mn_now;
1714	}	2010	}
1715		2011
1716	mn_now = ev_rt_now;	2012	mn_now = ev_rt_now;
1717	}	2013	}
1718	}	2014	}
1719		2015
1720	void
1721	ev_ref (EV_P)
1722	{
1723	++activecnt;
1724	}
1725
1726	void
1727	ev_unref (EV_P)
1728	{
1729	--activecnt;
1730	}
1731
1732	static int loop_done;	2016	static int loop_done;
1733		2017
1734	void	2018	void
1735	ev_loop (EV_P_ int flags)	2019	ev_loop (EV_P_ int flags)
1736	{	2020	{
…		…
1738		2022
1739	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2023	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1740		2024
1741	do	2025	do
1742	{	2026	{
		2027	#if EV_VERIFY >= 2
		2028	ev_loop_verify (EV_A);
		2029	#endif
		2030
1743	#ifndef _WIN32	2031	#ifndef _WIN32
1744	if (expect_false (curpid)) /* penalise the forking check even more */	2032	if (expect_false (curpid)) /* penalise the forking check even more */
1745	if (expect_false (getpid () != curpid))	2033	if (expect_false (getpid () != curpid))
1746	{	2034	{
1747	curpid = getpid ();	2035	curpid = getpid ();
…		…
1764	{	2052	{
1765	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2053	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1766	call_pending (EV_A);	2054	call_pending (EV_A);
1767	}	2055	}
1768		2056
1769	if (expect_false (!activecnt))
1770	break;
1771
1772	/* we might have forked, so reify kernel state if necessary */	2057	/* we might have forked, so reify kernel state if necessary */
1773	if (expect_false (postfork))	2058	if (expect_false (postfork))
1774	loop_fork (EV_A);	2059	loop_fork (EV_A);
1775		2060
1776	/* update fd-related kernel structures */	2061	/* update fd-related kernel structures */
…		…
1788		2073
1789	waittime = MAX_BLOCKTIME;	2074	waittime = MAX_BLOCKTIME;
1790		2075
1791	if (timercnt)	2076	if (timercnt)
1792	{	2077	{
1793	ev_tstamp to = ev_at (timers [HEAP0]) - mn_now + backend_fudge;	2078	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1794	if (waittime > to) waittime = to;	2079	if (waittime > to) waittime = to;
1795	}	2080	}
1796		2081
1797	#if EV_PERIODIC_ENABLE	2082	#if EV_PERIODIC_ENABLE
1798	if (periodiccnt)	2083	if (periodiccnt)
1799	{	2084	{
1800	ev_tstamp to = ev_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2085	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1801	if (waittime > to) waittime = to;	2086	if (waittime > to) waittime = to;
1802	}	2087	}
1803	#endif	2088	#endif
1804		2089
1805	if (expect_false (waittime < timeout_blocktime))	2090	if (expect_false (waittime < timeout_blocktime))
…		…
1855	ev_unloop (EV_P_ int how)	2140	ev_unloop (EV_P_ int how)
1856	{	2141	{
1857	loop_done = how;	2142	loop_done = how;
1858	}	2143	}
1859		2144
		2145	void
		2146	ev_ref (EV_P)
		2147	{
		2148	++activecnt;
		2149	}
		2150
		2151	void
		2152	ev_unref (EV_P)
		2153	{
		2154	--activecnt;
		2155	}
		2156
		2157	void
		2158	ev_now_update (EV_P)
		2159	{
		2160	time_update (EV_A_ 1e100);
		2161	}
		2162
		2163	void
		2164	ev_suspend (EV_P)
		2165	{
		2166	ev_now_update (EV_A);
		2167	}
		2168
		2169	void
		2170	ev_resume (EV_P)
		2171	{
		2172	ev_tstamp mn_prev = mn_now;
		2173
		2174	ev_now_update (EV_A);
		2175	timers_reschedule (EV_A_ mn_now - mn_prev);
		2176	#if EV_PERIODIC_ENABLE
		2177	/* TODO: really do this? */
		2178	periodics_reschedule (EV_A);
		2179	#endif
		2180	}
		2181
1860	/*****************************************************************************/	2182	/*****************************************************************************/
		2183	/* singly-linked list management, used when the expected list length is short */
1861		2184
1862	void inline_size	2185	inline_size void
1863	wlist_add (WL *head, WL elem)	2186	wlist_add (WL *head, WL elem)
1864	{	2187	{
1865	elem->next = *head;	2188	elem->next = *head;
1866	*head = elem;	2189	*head = elem;
1867	}	2190	}
1868		2191
1869	void inline_size	2192	inline_size void
1870	wlist_del (WL *head, WL elem)	2193	wlist_del (WL *head, WL elem)
1871	{	2194	{
1872	while (*head)	2195	while (*head)
1873	{	2196	{
1874	if (*head == elem)	2197	if (*head == elem)
…		…
1879		2202
1880	head = &(*head)->next;	2203	head = &(*head)->next;
1881	}	2204	}
1882	}	2205	}
1883		2206
1884	void inline_speed	2207	/* internal, faster, version of ev_clear_pending */
		2208	inline_speed void
1885	clear_pending (EV_P_ W w)	2209	clear_pending (EV_P_ W w)
1886	{	2210	{
1887	if (w->pending)	2211	if (w->pending)
1888	{	2212	{
1889	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2213	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1890	w->pending = 0;	2214	w->pending = 0;
1891	}	2215	}
1892	}	2216	}
1893		2217
1894	int	2218	int
…		…
1898	int pending = w_->pending;	2222	int pending = w_->pending;
1899		2223
1900	if (expect_true (pending))	2224	if (expect_true (pending))
1901	{	2225	{
1902	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2226	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2227	p->w = (W)&pending_w;
1903	w_->pending = 0;	2228	w_->pending = 0;
1904	p->w = 0;
1905	return p->events;	2229	return p->events;
1906	}	2230	}
1907	else	2231	else
1908	return 0;	2232	return 0;
1909	}	2233	}
1910		2234
1911	void inline_size	2235	inline_size void
1912	pri_adjust (EV_P_ W w)	2236	pri_adjust (EV_P_ W w)
1913	{	2237	{
1914	int pri = w->priority;	2238	int pri = w->priority;
1915	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2239	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1916	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2240	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1917	w->priority = pri;	2241	w->priority = pri;
1918	}	2242	}
1919		2243
1920	void inline_speed	2244	inline_speed void
1921	ev_start (EV_P_ W w, int active)	2245	ev_start (EV_P_ W w, int active)
1922	{	2246	{
1923	pri_adjust (EV_A_ w);	2247	pri_adjust (EV_A_ w);
1924	w->active = active;	2248	w->active = active;
1925	ev_ref (EV_A);	2249	ev_ref (EV_A);
1926	}	2250	}
1927		2251
1928	void inline_size	2252	inline_size void
1929	ev_stop (EV_P_ W w)	2253	ev_stop (EV_P_ W w)
1930	{	2254	{
1931	ev_unref (EV_A);	2255	ev_unref (EV_A);
1932	w->active = 0;	2256	w->active = 0;
1933	}	2257	}
…		…
1940	int fd = w->fd;	2264	int fd = w->fd;
1941		2265
1942	if (expect_false (ev_is_active (w)))	2266	if (expect_false (ev_is_active (w)))
1943	return;	2267	return;
1944		2268
1945	assert (("ev_io_start called with negative fd", fd >= 0));	2269	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2270	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
		2271
		2272	EV_FREQUENT_CHECK;
1946		2273
1947	ev_start (EV_A_ (W)w, 1);	2274	ev_start (EV_A_ (W)w, 1);
1948	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2275	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1949	wlist_add (&anfds[fd].head, (WL)w);	2276	wlist_add (&anfds[fd].head, (WL)w);
1950		2277
1951	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2278	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
1952	w->events &= ~EV_IOFDSET;	2279	w->events &= ~EV__IOFDSET;
		2280
		2281	EV_FREQUENT_CHECK;
1953	}	2282	}
1954		2283
1955	void noinline	2284	void noinline
1956	ev_io_stop (EV_P_ ev_io *w)	2285	ev_io_stop (EV_P_ ev_io *w)
1957	{	2286	{
1958	clear_pending (EV_A_ (W)w);	2287	clear_pending (EV_A_ (W)w);
1959	if (expect_false (!ev_is_active (w)))	2288	if (expect_false (!ev_is_active (w)))
1960	return;	2289	return;
1961		2290
1962	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2291	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		2292
		2293	EV_FREQUENT_CHECK;
1963		2294
1964	wlist_del (&anfds[w->fd].head, (WL)w);	2295	wlist_del (&anfds[w->fd].head, (WL)w);
1965	ev_stop (EV_A_ (W)w);	2296	ev_stop (EV_A_ (W)w);
1966		2297
1967	fd_change (EV_A_ w->fd, 1);	2298	fd_change (EV_A_ w->fd, 1);
		2299
		2300	EV_FREQUENT_CHECK;
1968	}	2301	}
1969		2302
1970	void noinline	2303	void noinline
1971	ev_timer_start (EV_P_ ev_timer *w)	2304	ev_timer_start (EV_P_ ev_timer *w)
1972	{	2305	{
1973	if (expect_false (ev_is_active (w)))	2306	if (expect_false (ev_is_active (w)))
1974	return;	2307	return;
1975		2308
1976	ev_at (w) += mn_now;	2309	ev_at (w) += mn_now;
1977		2310
1978	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2311	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1979		2312
		2313	EV_FREQUENT_CHECK;
		2314
		2315	++timercnt;
1980	ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1);	2316	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1981	array_needsize (WT, timers, timermax, timercnt + HEAP0, EMPTY2);	2317	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1982	timers [ev_active (w)] = (WT)w;	2318	ANHE_w (timers [ev_active (w)]) = (WT)w;
		2319	ANHE_at_cache (timers [ev_active (w)]);
1983	upheap (timers, ev_active (w));	2320	upheap (timers, ev_active (w));
1984		2321
		2322	EV_FREQUENT_CHECK;
		2323
1985	/*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/	2324	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1986	}	2325	}
1987		2326
1988	void noinline	2327	void noinline
1989	ev_timer_stop (EV_P_ ev_timer *w)	2328	ev_timer_stop (EV_P_ ev_timer *w)
1990	{	2329	{
1991	clear_pending (EV_A_ (W)w);	2330	clear_pending (EV_A_ (W)w);
1992	if (expect_false (!ev_is_active (w)))	2331	if (expect_false (!ev_is_active (w)))
1993	return;	2332	return;
1994		2333
		2334	EV_FREQUENT_CHECK;
		2335
1995	{	2336	{
1996	int active = ev_active (w);	2337	int active = ev_active (w);
1997		2338
1998	assert (("internal timer heap corruption", timers [active] == (WT)w));	2339	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
1999		2340
		2341	--timercnt;
		2342
2000	if (expect_true (active < timercnt + HEAP0 - 1))	2343	if (expect_true (active < timercnt + HEAP0))
2001	{	2344	{
2002	timers [active] = timers [timercnt + HEAP0 - 1];	2345	timers [active] = timers [timercnt + HEAP0];
2003	adjustheap (timers, timercnt, active);	2346	adjustheap (timers, timercnt, active);
2004	}	2347	}
2005
2006	--timercnt;
2007	}	2348	}
		2349
		2350	EV_FREQUENT_CHECK;
2008		2351
2009	ev_at (w) -= mn_now;	2352	ev_at (w) -= mn_now;
2010		2353
2011	ev_stop (EV_A_ (W)w);	2354	ev_stop (EV_A_ (W)w);
2012	}	2355	}
2013		2356
2014	void noinline	2357	void noinline
2015	ev_timer_again (EV_P_ ev_timer *w)	2358	ev_timer_again (EV_P_ ev_timer *w)
2016	{	2359	{
		2360	EV_FREQUENT_CHECK;
		2361
2017	if (ev_is_active (w))	2362	if (ev_is_active (w))
2018	{	2363	{
2019	if (w->repeat)	2364	if (w->repeat)
2020	{	2365	{
2021	ev_at (w) = mn_now + w->repeat;	2366	ev_at (w) = mn_now + w->repeat;
		2367	ANHE_at_cache (timers [ev_active (w)]);
2022	adjustheap (timers, timercnt, ev_active (w));	2368	adjustheap (timers, timercnt, ev_active (w));
2023	}	2369	}
2024	else	2370	else
2025	ev_timer_stop (EV_A_ w);	2371	ev_timer_stop (EV_A_ w);
2026	}	2372	}
2027	else if (w->repeat)	2373	else if (w->repeat)
2028	{	2374	{
2029	ev_at (w) = w->repeat;	2375	ev_at (w) = w->repeat;
2030	ev_timer_start (EV_A_ w);	2376	ev_timer_start (EV_A_ w);
2031	}	2377	}
		2378
		2379	EV_FREQUENT_CHECK;
2032	}	2380	}
2033		2381
2034	#if EV_PERIODIC_ENABLE	2382	#if EV_PERIODIC_ENABLE
2035	void noinline	2383	void noinline
2036	ev_periodic_start (EV_P_ ev_periodic *w)	2384	ev_periodic_start (EV_P_ ev_periodic *w)
…		…
2040		2388
2041	if (w->reschedule_cb)	2389	if (w->reschedule_cb)
2042	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2390	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2043	else if (w->interval)	2391	else if (w->interval)
2044	{	2392	{
2045	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2393	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2046	/* this formula differs from the one in periodic_reify because we do not always round up */	2394	/* this formula differs from the one in periodic_reify because we do not always round up */
2047	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2395	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2048	}	2396	}
2049	else	2397	else
2050	ev_at (w) = w->offset;	2398	ev_at (w) = w->offset;
2051		2399
		2400	EV_FREQUENT_CHECK;
		2401
		2402	++periodiccnt;
2052	ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1);	2403	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2053	array_needsize (WT, periodics, periodicmax, periodiccnt + HEAP0, EMPTY2);	2404	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2054	periodics [ev_active (w)] = (WT)w;	2405	ANHE_w (periodics [ev_active (w)]) = (WT)w;
		2406	ANHE_at_cache (periodics [ev_active (w)]);
2055	upheap (periodics, ev_active (w));	2407	upheap (periodics, ev_active (w));
2056		2408
		2409	EV_FREQUENT_CHECK;
		2410
2057	/*assert (("internal periodic heap corruption", periodics [ev_active (w)] == w));*/	2411	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2058	}	2412	}
2059		2413
2060	void noinline	2414	void noinline
2061	ev_periodic_stop (EV_P_ ev_periodic *w)	2415	ev_periodic_stop (EV_P_ ev_periodic *w)
2062	{	2416	{
2063	clear_pending (EV_A_ (W)w);	2417	clear_pending (EV_A_ (W)w);
2064	if (expect_false (!ev_is_active (w)))	2418	if (expect_false (!ev_is_active (w)))
2065	return;	2419	return;
2066		2420
		2421	EV_FREQUENT_CHECK;
		2422
2067	{	2423	{
2068	int active = ev_active (w);	2424	int active = ev_active (w);
2069		2425
2070	assert (("internal periodic heap corruption", periodics [active] == (WT)w));	2426	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2071		2427
		2428	--periodiccnt;
		2429
2072	if (expect_true (active < periodiccnt + HEAP0 - 1))	2430	if (expect_true (active < periodiccnt + HEAP0))
2073	{	2431	{
2074	periodics [active] = periodics [periodiccnt + HEAP0 - 1];	2432	periodics [active] = periodics [periodiccnt + HEAP0];
2075	adjustheap (periodics, periodiccnt, active);	2433	adjustheap (periodics, periodiccnt, active);
2076	}	2434	}
2077
2078	--periodiccnt;
2079	}	2435	}
		2436
		2437	EV_FREQUENT_CHECK;
2080		2438
2081	ev_stop (EV_A_ (W)w);	2439	ev_stop (EV_A_ (W)w);
2082	}	2440	}
2083		2441
2084	void noinline	2442	void noinline
…		…
2096		2454
2097	void noinline	2455	void noinline
2098	ev_signal_start (EV_P_ ev_signal *w)	2456	ev_signal_start (EV_P_ ev_signal *w)
2099	{	2457	{
2100	#if EV_MULTIPLICITY	2458	#if EV_MULTIPLICITY
2101	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2459	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2102	#endif	2460	#endif
2103	if (expect_false (ev_is_active (w)))	2461	if (expect_false (ev_is_active (w)))
2104	return;	2462	return;
2105		2463
2106	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2464	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2107		2465
2108	evpipe_init (EV_A);	2466	evpipe_init (EV_A);
		2467
		2468	EV_FREQUENT_CHECK;
2109		2469
2110	{	2470	{
2111	#ifndef _WIN32	2471	#ifndef _WIN32
2112	sigset_t full, prev;	2472	sigset_t full, prev;
2113	sigfillset (&full);	2473	sigfillset (&full);
2114	sigprocmask (SIG_SETMASK, &full, &prev);	2474	sigprocmask (SIG_SETMASK, &full, &prev);
2115	#endif	2475	#endif
2116		2476
2117	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2477	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2118		2478
2119	#ifndef _WIN32	2479	#ifndef _WIN32
2120	sigprocmask (SIG_SETMASK, &prev, 0);	2480	sigprocmask (SIG_SETMASK, &prev, 0);
2121	#endif	2481	#endif
2122	}	2482	}
…		…
2134	sigfillset (&sa.sa_mask);	2494	sigfillset (&sa.sa_mask);
2135	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2495	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2136	sigaction (w->signum, &sa, 0);	2496	sigaction (w->signum, &sa, 0);
2137	#endif	2497	#endif
2138	}	2498	}
		2499
		2500	EV_FREQUENT_CHECK;
2139	}	2501	}
2140		2502
2141	void noinline	2503	void noinline
2142	ev_signal_stop (EV_P_ ev_signal *w)	2504	ev_signal_stop (EV_P_ ev_signal *w)
2143	{	2505	{
2144	clear_pending (EV_A_ (W)w);	2506	clear_pending (EV_A_ (W)w);
2145	if (expect_false (!ev_is_active (w)))	2507	if (expect_false (!ev_is_active (w)))
2146	return;	2508	return;
2147		2509
		2510	EV_FREQUENT_CHECK;
		2511
2148	wlist_del (&signals [w->signum - 1].head, (WL)w);	2512	wlist_del (&signals [w->signum - 1].head, (WL)w);
2149	ev_stop (EV_A_ (W)w);	2513	ev_stop (EV_A_ (W)w);
2150		2514
2151	if (!signals [w->signum - 1].head)	2515	if (!signals [w->signum - 1].head)
2152	signal (w->signum, SIG_DFL);	2516	signal (w->signum, SIG_DFL);
		2517
		2518	EV_FREQUENT_CHECK;
2153	}	2519	}
2154		2520
2155	void	2521	void
2156	ev_child_start (EV_P_ ev_child *w)	2522	ev_child_start (EV_P_ ev_child *w)
2157	{	2523	{
2158	#if EV_MULTIPLICITY	2524	#if EV_MULTIPLICITY
2159	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2525	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2160	#endif	2526	#endif
2161	if (expect_false (ev_is_active (w)))	2527	if (expect_false (ev_is_active (w)))
2162	return;	2528	return;
2163		2529
		2530	EV_FREQUENT_CHECK;
		2531
2164	ev_start (EV_A_ (W)w, 1);	2532	ev_start (EV_A_ (W)w, 1);
2165	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2533	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2534
		2535	EV_FREQUENT_CHECK;
2166	}	2536	}
2167		2537
2168	void	2538	void
2169	ev_child_stop (EV_P_ ev_child *w)	2539	ev_child_stop (EV_P_ ev_child *w)
2170	{	2540	{
2171	clear_pending (EV_A_ (W)w);	2541	clear_pending (EV_A_ (W)w);
2172	if (expect_false (!ev_is_active (w)))	2542	if (expect_false (!ev_is_active (w)))
2173	return;	2543	return;
2174		2544
		2545	EV_FREQUENT_CHECK;
		2546
2175	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2547	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2176	ev_stop (EV_A_ (W)w);	2548	ev_stop (EV_A_ (W)w);
		2549
		2550	EV_FREQUENT_CHECK;
2177	}	2551	}
2178		2552
2179	#if EV_STAT_ENABLE	2553	#if EV_STAT_ENABLE
2180		2554
2181	# ifdef _WIN32	2555	# ifdef _WIN32
2182	# undef lstat	2556	# undef lstat
2183	# define lstat(a,b) _stati64 (a,b)	2557	# define lstat(a,b) _stati64 (a,b)
2184	# endif	2558	# endif
2185		2559
2186	#define DEF_STAT_INTERVAL 5.0074891	2560	#define DEF_STAT_INTERVAL 5.0074891
		2561	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2187	#define MIN_STAT_INTERVAL 0.1074891	2562	#define MIN_STAT_INTERVAL 0.1074891
2188		2563
2189	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2564	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2190		2565
2191	#if EV_USE_INOTIFY	2566	#if EV_USE_INOTIFY
2192	# define EV_INOTIFY_BUFSIZE 8192	2567	# define EV_INOTIFY_BUFSIZE 8192
…		…
2196	{	2571	{
2197	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);	2572	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);
2198		2573
2199	if (w->wd < 0)	2574	if (w->wd < 0)
2200	{	2575	{
		2576	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2201	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2577	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2202		2578
2203	/* monitor some parent directory for speedup hints */	2579	/* monitor some parent directory for speedup hints */
2204	/* note that exceeding the hardcoded limit is not a correctness issue, */	2580	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2205	/* but an efficiency issue only */	2581	/* but an efficiency issue only */
2206	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2582	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2207	{	2583	{
2208	char path [4096];	2584	char path [4096];
2209	strcpy (path, w->path);	2585	strcpy (path, w->path);
…		…
2213	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2589	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2214	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2590	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2215		2591
2216	char *pend = strrchr (path, '/');	2592	char *pend = strrchr (path, '/');
2217		2593
2218	if (!pend)	2594	if (!pend || pend == path)
2219	break; /* whoops, no '/', complain to your admin */	2595	break;
2220		2596
2221	*pend = 0;	2597	*pend = 0;
2222	w->wd = inotify_add_watch (fs_fd, path, mask);	2598	w->wd = inotify_add_watch (fs_fd, path, mask);
2223	}	2599	}
2224	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2600	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2225	}	2601	}
2226	}	2602	}
2227	else
2228	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2229		2603
2230	if (w->wd >= 0)	2604	if (w->wd >= 0)
		2605	{
2231	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2606	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2607
		2608	/* now local changes will be tracked by inotify, but remote changes won't */
		2609	/* unless the filesystem it known to be local, we therefore still poll */
		2610	/* also do poll on <2.6.25, but with normal frequency */
		2611	struct statfs sfs;
		2612
		2613	if (fs_2625 && !statfs (w->path, &sfs))
		2614	if (sfs.f_type == 0x1373 /* devfs */
		2615	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2616	|| sfs.f_type == 0x3153464a /* jfs */
		2617	|| sfs.f_type == 0x52654973 /* reiser3 */
		2618	|| sfs.f_type == 0x01021994 /* tempfs */
		2619	|| sfs.f_type == 0x58465342 /* xfs */)
		2620	return;
		2621
		2622	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2623	ev_timer_again (EV_A_ &w->timer);
		2624	}
2232	}	2625	}
2233		2626
2234	static void noinline	2627	static void noinline
2235	infy_del (EV_P_ ev_stat *w)	2628	infy_del (EV_P_ ev_stat *w)
2236	{	2629	{
…		…
2250		2643
2251	static void noinline	2644	static void noinline
2252	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2645	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2253	{	2646	{
2254	if (slot < 0)	2647	if (slot < 0)
2255	/* overflow, need to check for all hahs slots */	2648	/* overflow, need to check for all hash slots */
2256	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2649	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2257	infy_wd (EV_A_ slot, wd, ev);	2650	infy_wd (EV_A_ slot, wd, ev);
2258	else	2651	else
2259	{	2652	{
2260	WL w_;	2653	WL w_;
…		…
2266		2659
2267	if (w->wd == wd || wd == -1)	2660	if (w->wd == wd || wd == -1)
2268	{	2661	{
2269	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2662	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2270	{	2663	{
		2664	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2271	w->wd = -1;	2665	w->wd = -1;
2272	infy_add (EV_A_ w); /* re-add, no matter what */	2666	infy_add (EV_A_ w); /* re-add, no matter what */
2273	}	2667	}
2274		2668
2275	stat_timer_cb (EV_A_ &w->timer, 0);	2669	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2288		2682
2289	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2683	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2290	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2684	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2291	}	2685	}
2292		2686
2293	void inline_size	2687	inline_size void
		2688	check_2625 (EV_P)
		2689	{
		2690	/* kernels < 2.6.25 are borked
		2691	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2692	*/
		2693	struct utsname buf;
		2694	int major, minor, micro;
		2695
		2696	if (uname (&buf))
		2697	return;
		2698
		2699	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2700	return;
		2701
		2702	if (major < 2
		2703	|| (major == 2 && minor < 6)
		2704	|| (major == 2 && minor == 6 && micro < 25))
		2705	return;
		2706
		2707	fs_2625 = 1;
		2708	}
		2709
		2710	inline_size void
2294	infy_init (EV_P)	2711	infy_init (EV_P)
2295	{	2712	{
2296	if (fs_fd != -2)	2713	if (fs_fd != -2)
2297	return;	2714	return;
		2715
		2716	fs_fd = -1;
		2717
		2718	check_2625 (EV_A);
2298		2719
2299	fs_fd = inotify_init ();	2720	fs_fd = inotify_init ();
2300		2721
2301	if (fs_fd >= 0)	2722	if (fs_fd >= 0)
2302	{	2723	{
…		…
2304	ev_set_priority (&fs_w, EV_MAXPRI);	2725	ev_set_priority (&fs_w, EV_MAXPRI);
2305	ev_io_start (EV_A_ &fs_w);	2726	ev_io_start (EV_A_ &fs_w);
2306	}	2727	}
2307	}	2728	}
2308		2729
2309	void inline_size	2730	inline_size void
2310	infy_fork (EV_P)	2731	infy_fork (EV_P)
2311	{	2732	{
2312	int slot;	2733	int slot;
2313		2734
2314	if (fs_fd < 0)	2735	if (fs_fd < 0)
…		…
2330	w->wd = -1;	2751	w->wd = -1;
2331		2752
2332	if (fs_fd >= 0)	2753	if (fs_fd >= 0)
2333	infy_add (EV_A_ w); /* re-add, no matter what */	2754	infy_add (EV_A_ w); /* re-add, no matter what */
2334	else	2755	else
2335	ev_timer_start (EV_A_ &w->timer);	2756	ev_timer_again (EV_A_ &w->timer);
2336	}	2757	}
2337
2338	}	2758	}
2339	}	2759	}
2340		2760
		2761	#endif
		2762
		2763	#ifdef _WIN32
		2764	# define EV_LSTAT(p,b) _stati64 (p, b)
		2765	#else
		2766	# define EV_LSTAT(p,b) lstat (p, b)
2341	#endif	2767	#endif
2342		2768
2343	void	2769	void
2344	ev_stat_stat (EV_P_ ev_stat *w)	2770	ev_stat_stat (EV_P_ ev_stat *w)
2345	{	2771	{
…		…
2372	|| w->prev.st_atime != w->attr.st_atime	2798	|| w->prev.st_atime != w->attr.st_atime
2373	|| w->prev.st_mtime != w->attr.st_mtime	2799	|| w->prev.st_mtime != w->attr.st_mtime
2374	|| w->prev.st_ctime != w->attr.st_ctime	2800	|| w->prev.st_ctime != w->attr.st_ctime
2375	) {	2801	) {
2376	#if EV_USE_INOTIFY	2802	#if EV_USE_INOTIFY
		2803	if (fs_fd >= 0)
		2804	{
2377	infy_del (EV_A_ w);	2805	infy_del (EV_A_ w);
2378	infy_add (EV_A_ w);	2806	infy_add (EV_A_ w);
2379	ev_stat_stat (EV_A_ w); /* avoid race... */	2807	ev_stat_stat (EV_A_ w); /* avoid race... */
		2808	}
2380	#endif	2809	#endif
2381		2810
2382	ev_feed_event (EV_A_ w, EV_STAT);	2811	ev_feed_event (EV_A_ w, EV_STAT);
2383	}	2812	}
2384	}	2813	}
…		…
2387	ev_stat_start (EV_P_ ev_stat *w)	2816	ev_stat_start (EV_P_ ev_stat *w)
2388	{	2817	{
2389	if (expect_false (ev_is_active (w)))	2818	if (expect_false (ev_is_active (w)))
2390	return;	2819	return;
2391		2820
2392	/* since we use memcmp, we need to clear any padding data etc. */
2393	memset (&w->prev, 0, sizeof (ev_statdata));
2394	memset (&w->attr, 0, sizeof (ev_statdata));
2395
2396	ev_stat_stat (EV_A_ w);	2821	ev_stat_stat (EV_A_ w);
2397		2822
		2823	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2398	if (w->interval < MIN_STAT_INTERVAL)	2824	w->interval = MIN_STAT_INTERVAL;
2399	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2400		2825
2401	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2826	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2402	ev_set_priority (&w->timer, ev_priority (w));	2827	ev_set_priority (&w->timer, ev_priority (w));
2403		2828
2404	#if EV_USE_INOTIFY	2829	#if EV_USE_INOTIFY
2405	infy_init (EV_A);	2830	infy_init (EV_A);
2406		2831
2407	if (fs_fd >= 0)	2832	if (fs_fd >= 0)
2408	infy_add (EV_A_ w);	2833	infy_add (EV_A_ w);
2409	else	2834	else
2410	#endif	2835	#endif
2411	ev_timer_start (EV_A_ &w->timer);	2836	ev_timer_again (EV_A_ &w->timer);
2412		2837
2413	ev_start (EV_A_ (W)w, 1);	2838	ev_start (EV_A_ (W)w, 1);
		2839
		2840	EV_FREQUENT_CHECK;
2414	}	2841	}
2415		2842
2416	void	2843	void
2417	ev_stat_stop (EV_P_ ev_stat *w)	2844	ev_stat_stop (EV_P_ ev_stat *w)
2418	{	2845	{
2419	clear_pending (EV_A_ (W)w);	2846	clear_pending (EV_A_ (W)w);
2420	if (expect_false (!ev_is_active (w)))	2847	if (expect_false (!ev_is_active (w)))
2421	return;	2848	return;
2422		2849
		2850	EV_FREQUENT_CHECK;
		2851
2423	#if EV_USE_INOTIFY	2852	#if EV_USE_INOTIFY
2424	infy_del (EV_A_ w);	2853	infy_del (EV_A_ w);
2425	#endif	2854	#endif
2426	ev_timer_stop (EV_A_ &w->timer);	2855	ev_timer_stop (EV_A_ &w->timer);
2427		2856
2428	ev_stop (EV_A_ (W)w);	2857	ev_stop (EV_A_ (W)w);
		2858
		2859	EV_FREQUENT_CHECK;
2429	}	2860	}
2430	#endif	2861	#endif
2431		2862
2432	#if EV_IDLE_ENABLE	2863	#if EV_IDLE_ENABLE
2433	void	2864	void
…		…
2435	{	2866	{
2436	if (expect_false (ev_is_active (w)))	2867	if (expect_false (ev_is_active (w)))
2437	return;	2868	return;
2438		2869
2439	pri_adjust (EV_A_ (W)w);	2870	pri_adjust (EV_A_ (W)w);
		2871
		2872	EV_FREQUENT_CHECK;
2440		2873
2441	{	2874	{
2442	int active = ++idlecnt [ABSPRI (w)];	2875	int active = ++idlecnt [ABSPRI (w)];
2443		2876
2444	++idleall;	2877	++idleall;
2445	ev_start (EV_A_ (W)w, active);	2878	ev_start (EV_A_ (W)w, active);
2446		2879
2447	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	2880	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2448	idles [ABSPRI (w)][active - 1] = w;	2881	idles [ABSPRI (w)][active - 1] = w;
2449	}	2882	}
		2883
		2884	EV_FREQUENT_CHECK;
2450	}	2885	}
2451		2886
2452	void	2887	void
2453	ev_idle_stop (EV_P_ ev_idle *w)	2888	ev_idle_stop (EV_P_ ev_idle *w)
2454	{	2889	{
2455	clear_pending (EV_A_ (W)w);	2890	clear_pending (EV_A_ (W)w);
2456	if (expect_false (!ev_is_active (w)))	2891	if (expect_false (!ev_is_active (w)))
2457	return;	2892	return;
2458		2893
		2894	EV_FREQUENT_CHECK;
		2895
2459	{	2896	{
2460	int active = ev_active (w);	2897	int active = ev_active (w);
2461		2898
2462	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	2899	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2463	ev_active (idles [ABSPRI (w)][active - 1]) = active;	2900	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2464		2901
2465	ev_stop (EV_A_ (W)w);	2902	ev_stop (EV_A_ (W)w);
2466	--idleall;	2903	--idleall;
2467	}	2904	}
		2905
		2906	EV_FREQUENT_CHECK;
2468	}	2907	}
2469	#endif	2908	#endif
2470		2909
2471	void	2910	void
2472	ev_prepare_start (EV_P_ ev_prepare *w)	2911	ev_prepare_start (EV_P_ ev_prepare *w)
2473	{	2912	{
2474	if (expect_false (ev_is_active (w)))	2913	if (expect_false (ev_is_active (w)))
2475	return;	2914	return;
		2915
		2916	EV_FREQUENT_CHECK;
2476		2917
2477	ev_start (EV_A_ (W)w, ++preparecnt);	2918	ev_start (EV_A_ (W)w, ++preparecnt);
2478	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	2919	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2479	prepares [preparecnt - 1] = w;	2920	prepares [preparecnt - 1] = w;
		2921
		2922	EV_FREQUENT_CHECK;
2480	}	2923	}
2481		2924
2482	void	2925	void
2483	ev_prepare_stop (EV_P_ ev_prepare *w)	2926	ev_prepare_stop (EV_P_ ev_prepare *w)
2484	{	2927	{
2485	clear_pending (EV_A_ (W)w);	2928	clear_pending (EV_A_ (W)w);
2486	if (expect_false (!ev_is_active (w)))	2929	if (expect_false (!ev_is_active (w)))
2487	return;	2930	return;
2488		2931
		2932	EV_FREQUENT_CHECK;
		2933
2489	{	2934	{
2490	int active = ev_active (w);	2935	int active = ev_active (w);
2491		2936
2492	prepares [active - 1] = prepares [--preparecnt];	2937	prepares [active - 1] = prepares [--preparecnt];
2493	ev_active (prepares [active - 1]) = active;	2938	ev_active (prepares [active - 1]) = active;
2494	}	2939	}
2495		2940
2496	ev_stop (EV_A_ (W)w);	2941	ev_stop (EV_A_ (W)w);
		2942
		2943	EV_FREQUENT_CHECK;
2497	}	2944	}
2498		2945
2499	void	2946	void
2500	ev_check_start (EV_P_ ev_check *w)	2947	ev_check_start (EV_P_ ev_check *w)
2501	{	2948	{
2502	if (expect_false (ev_is_active (w)))	2949	if (expect_false (ev_is_active (w)))
2503	return;	2950	return;
		2951
		2952	EV_FREQUENT_CHECK;
2504		2953
2505	ev_start (EV_A_ (W)w, ++checkcnt);	2954	ev_start (EV_A_ (W)w, ++checkcnt);
2506	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	2955	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2507	checks [checkcnt - 1] = w;	2956	checks [checkcnt - 1] = w;
		2957
		2958	EV_FREQUENT_CHECK;
2508	}	2959	}
2509		2960
2510	void	2961	void
2511	ev_check_stop (EV_P_ ev_check *w)	2962	ev_check_stop (EV_P_ ev_check *w)
2512	{	2963	{
2513	clear_pending (EV_A_ (W)w);	2964	clear_pending (EV_A_ (W)w);
2514	if (expect_false (!ev_is_active (w)))	2965	if (expect_false (!ev_is_active (w)))
2515	return;	2966	return;
2516		2967
		2968	EV_FREQUENT_CHECK;
		2969
2517	{	2970	{
2518	int active = ev_active (w);	2971	int active = ev_active (w);
2519		2972
2520	checks [active - 1] = checks [--checkcnt];	2973	checks [active - 1] = checks [--checkcnt];
2521	ev_active (checks [active - 1]) = active;	2974	ev_active (checks [active - 1]) = active;
2522	}	2975	}
2523		2976
2524	ev_stop (EV_A_ (W)w);	2977	ev_stop (EV_A_ (W)w);
		2978
		2979	EV_FREQUENT_CHECK;
2525	}	2980	}
2526		2981
2527	#if EV_EMBED_ENABLE	2982	#if EV_EMBED_ENABLE
2528	void noinline	2983	void noinline
2529	ev_embed_sweep (EV_P_ ev_embed *w)	2984	ev_embed_sweep (EV_P_ ev_embed *w)
…		…
2556	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3011	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2557	}	3012	}
2558	}	3013	}
2559	}	3014	}
2560		3015
		3016	static void
		3017	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3018	{
		3019	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3020
		3021	ev_embed_stop (EV_A_ w);
		3022
		3023	{
		3024	struct ev_loop *loop = w->other;
		3025
		3026	ev_loop_fork (EV_A);
		3027	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3028	}
		3029
		3030	ev_embed_start (EV_A_ w);
		3031	}
		3032
2561	#if 0	3033	#if 0
2562	static void	3034	static void
2563	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3035	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2564	{	3036	{
2565	ev_idle_stop (EV_A_ idle);	3037	ev_idle_stop (EV_A_ idle);
…		…
2572	if (expect_false (ev_is_active (w)))	3044	if (expect_false (ev_is_active (w)))
2573	return;	3045	return;
2574		3046
2575	{	3047	{
2576	struct ev_loop *loop = w->other;	3048	struct ev_loop *loop = w->other;
2577	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3049	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2578	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3050	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2579	}	3051	}
		3052
		3053	EV_FREQUENT_CHECK;
2580		3054
2581	ev_set_priority (&w->io, ev_priority (w));	3055	ev_set_priority (&w->io, ev_priority (w));
2582	ev_io_start (EV_A_ &w->io);	3056	ev_io_start (EV_A_ &w->io);
2583		3057
2584	ev_prepare_init (&w->prepare, embed_prepare_cb);	3058	ev_prepare_init (&w->prepare, embed_prepare_cb);
2585	ev_set_priority (&w->prepare, EV_MINPRI);	3059	ev_set_priority (&w->prepare, EV_MINPRI);
2586	ev_prepare_start (EV_A_ &w->prepare);	3060	ev_prepare_start (EV_A_ &w->prepare);
2587		3061
		3062	ev_fork_init (&w->fork, embed_fork_cb);
		3063	ev_fork_start (EV_A_ &w->fork);
		3064
2588	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3065	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2589		3066
2590	ev_start (EV_A_ (W)w, 1);	3067	ev_start (EV_A_ (W)w, 1);
		3068
		3069	EV_FREQUENT_CHECK;
2591	}	3070	}
2592		3071
2593	void	3072	void
2594	ev_embed_stop (EV_P_ ev_embed *w)	3073	ev_embed_stop (EV_P_ ev_embed *w)
2595	{	3074	{
2596	clear_pending (EV_A_ (W)w);	3075	clear_pending (EV_A_ (W)w);
2597	if (expect_false (!ev_is_active (w)))	3076	if (expect_false (!ev_is_active (w)))
2598	return;	3077	return;
2599		3078
		3079	EV_FREQUENT_CHECK;
		3080
2600	ev_io_stop (EV_A_ &w->io);	3081	ev_io_stop (EV_A_ &w->io);
2601	ev_prepare_stop (EV_A_ &w->prepare);	3082	ev_prepare_stop (EV_A_ &w->prepare);
		3083	ev_fork_stop (EV_A_ &w->fork);
2602		3084
2603	ev_stop (EV_A_ (W)w);	3085	EV_FREQUENT_CHECK;
2604	}	3086	}
2605	#endif	3087	#endif
2606		3088
2607	#if EV_FORK_ENABLE	3089	#if EV_FORK_ENABLE
2608	void	3090	void
2609	ev_fork_start (EV_P_ ev_fork *w)	3091	ev_fork_start (EV_P_ ev_fork *w)
2610	{	3092	{
2611	if (expect_false (ev_is_active (w)))	3093	if (expect_false (ev_is_active (w)))
2612	return;	3094	return;
		3095
		3096	EV_FREQUENT_CHECK;
2613		3097
2614	ev_start (EV_A_ (W)w, ++forkcnt);	3098	ev_start (EV_A_ (W)w, ++forkcnt);
2615	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3099	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2616	forks [forkcnt - 1] = w;	3100	forks [forkcnt - 1] = w;
		3101
		3102	EV_FREQUENT_CHECK;
2617	}	3103	}
2618		3104
2619	void	3105	void
2620	ev_fork_stop (EV_P_ ev_fork *w)	3106	ev_fork_stop (EV_P_ ev_fork *w)
2621	{	3107	{
2622	clear_pending (EV_A_ (W)w);	3108	clear_pending (EV_A_ (W)w);
2623	if (expect_false (!ev_is_active (w)))	3109	if (expect_false (!ev_is_active (w)))
2624	return;	3110	return;
2625		3111
		3112	EV_FREQUENT_CHECK;
		3113
2626	{	3114	{
2627	int active = ev_active (w);	3115	int active = ev_active (w);
2628		3116
2629	forks [active - 1] = forks [--forkcnt];	3117	forks [active - 1] = forks [--forkcnt];
2630	ev_active (forks [active - 1]) = active;	3118	ev_active (forks [active - 1]) = active;
2631	}	3119	}
2632		3120
2633	ev_stop (EV_A_ (W)w);	3121	ev_stop (EV_A_ (W)w);
		3122
		3123	EV_FREQUENT_CHECK;
2634	}	3124	}
2635	#endif	3125	#endif
2636		3126
2637	#if EV_ASYNC_ENABLE	3127	#if EV_ASYNC_ENABLE
2638	void	3128	void
…		…
2640	{	3130	{
2641	if (expect_false (ev_is_active (w)))	3131	if (expect_false (ev_is_active (w)))
2642	return;	3132	return;
2643		3133
2644	evpipe_init (EV_A);	3134	evpipe_init (EV_A);
		3135
		3136	EV_FREQUENT_CHECK;
2645		3137
2646	ev_start (EV_A_ (W)w, ++asynccnt);	3138	ev_start (EV_A_ (W)w, ++asynccnt);
2647	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);	3139	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2648	asyncs [asynccnt - 1] = w;	3140	asyncs [asynccnt - 1] = w;
		3141
		3142	EV_FREQUENT_CHECK;
2649	}	3143	}
2650		3144
2651	void	3145	void
2652	ev_async_stop (EV_P_ ev_async *w)	3146	ev_async_stop (EV_P_ ev_async *w)
2653	{	3147	{
2654	clear_pending (EV_A_ (W)w);	3148	clear_pending (EV_A_ (W)w);
2655	if (expect_false (!ev_is_active (w)))	3149	if (expect_false (!ev_is_active (w)))
2656	return;	3150	return;
2657		3151
		3152	EV_FREQUENT_CHECK;
		3153
2658	{	3154	{
2659	int active = ev_active (w);	3155	int active = ev_active (w);
2660		3156
2661	asyncs [active - 1] = asyncs [--asynccnt];	3157	asyncs [active - 1] = asyncs [--asynccnt];
2662	ev_active (asyncs [active - 1]) = active;	3158	ev_active (asyncs [active - 1]) = active;
2663	}	3159	}
2664		3160
2665	ev_stop (EV_A_ (W)w);	3161	ev_stop (EV_A_ (W)w);
		3162
		3163	EV_FREQUENT_CHECK;
2666	}	3164	}
2667		3165
2668	void	3166	void
2669	ev_async_send (EV_P_ ev_async *w)	3167	ev_async_send (EV_P_ ev_async *w)
2670	{	3168	{
…		…
2687	once_cb (EV_P_ struct ev_once *once, int revents)	3185	once_cb (EV_P_ struct ev_once *once, int revents)
2688	{	3186	{
2689	void (*cb)(int revents, void *arg) = once->cb;	3187	void (*cb)(int revents, void *arg) = once->cb;
2690	void *arg = once->arg;	3188	void *arg = once->arg;
2691		3189
2692	ev_io_stop (EV_A_ &once->io);	3190	ev_io_stop (EV_A_ &once->io);
2693	ev_timer_stop (EV_A_ &once->to);	3191	ev_timer_stop (EV_A_ &once->to);
2694	ev_free (once);	3192	ev_free (once);
2695		3193
2696	cb (revents, arg);	3194	cb (revents, arg);
2697	}	3195	}
2698		3196
2699	static void	3197	static void
2700	once_cb_io (EV_P_ ev_io *w, int revents)	3198	once_cb_io (EV_P_ ev_io *w, int revents)
2701	{	3199	{
2702	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3200	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3201
		3202	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2703	}	3203	}
2704		3204
2705	static void	3205	static void
2706	once_cb_to (EV_P_ ev_timer *w, int revents)	3206	once_cb_to (EV_P_ ev_timer *w, int revents)
2707	{	3207	{
2708	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3208	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3209
		3210	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2709	}	3211	}
2710		3212
2711	void	3213	void
2712	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3214	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2713	{	3215	{
…		…
2735	ev_timer_set (&once->to, timeout, 0.);	3237	ev_timer_set (&once->to, timeout, 0.);
2736	ev_timer_start (EV_A_ &once->to);	3238	ev_timer_start (EV_A_ &once->to);
2737	}	3239	}
2738	}	3240	}
2739		3241
		3242	/*****************************************************************************/
		3243
		3244	#if EV_WALK_ENABLE
		3245	void
		3246	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3247	{
		3248	int i, j;
		3249	ev_watcher_list *wl, *wn;
		3250
		3251	if (types & (EV_IO | EV_EMBED))
		3252	for (i = 0; i < anfdmax; ++i)
		3253	for (wl = anfds [i].head; wl; )
		3254	{
		3255	wn = wl->next;
		3256
		3257	#if EV_EMBED_ENABLE
		3258	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3259	{
		3260	if (types & EV_EMBED)
		3261	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3262	}
		3263	else
		3264	#endif
		3265	#if EV_USE_INOTIFY
		3266	if (ev_cb ((ev_io *)wl) == infy_cb)
		3267	;
		3268	else
		3269	#endif
		3270	if ((ev_io *)wl != &pipe_w)
		3271	if (types & EV_IO)
		3272	cb (EV_A_ EV_IO, wl);
		3273
		3274	wl = wn;
		3275	}
		3276
		3277	if (types & (EV_TIMER | EV_STAT))
		3278	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3279	#if EV_STAT_ENABLE
		3280	/*TODO: timer is not always active*/
		3281	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3282	{
		3283	if (types & EV_STAT)
		3284	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3285	}
		3286	else
		3287	#endif
		3288	if (types & EV_TIMER)
		3289	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3290
		3291	#if EV_PERIODIC_ENABLE
		3292	if (types & EV_PERIODIC)
		3293	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3294	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3295	#endif
		3296
		3297	#if EV_IDLE_ENABLE
		3298	if (types & EV_IDLE)
		3299	for (j = NUMPRI; i--; )
		3300	for (i = idlecnt [j]; i--; )
		3301	cb (EV_A_ EV_IDLE, idles [j][i]);
		3302	#endif
		3303
		3304	#if EV_FORK_ENABLE
		3305	if (types & EV_FORK)
		3306	for (i = forkcnt; i--; )
		3307	if (ev_cb (forks [i]) != embed_fork_cb)
		3308	cb (EV_A_ EV_FORK, forks [i]);
		3309	#endif
		3310
		3311	#if EV_ASYNC_ENABLE
		3312	if (types & EV_ASYNC)
		3313	for (i = asynccnt; i--; )
		3314	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3315	#endif
		3316
		3317	if (types & EV_PREPARE)
		3318	for (i = preparecnt; i--; )
		3319	#if EV_EMBED_ENABLE
		3320	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3321	#endif
		3322	cb (EV_A_ EV_PREPARE, prepares [i]);
		3323
		3324	if (types & EV_CHECK)
		3325	for (i = checkcnt; i--; )
		3326	cb (EV_A_ EV_CHECK, checks [i]);
		3327
		3328	if (types & EV_SIGNAL)
		3329	for (i = 0; i < signalmax; ++i)
		3330	for (wl = signals [i].head; wl; )
		3331	{
		3332	wn = wl->next;
		3333	cb (EV_A_ EV_SIGNAL, wl);
		3334	wl = wn;
		3335	}
		3336
		3337	if (types & EV_CHILD)
		3338	for (i = EV_PID_HASHSIZE; i--; )
		3339	for (wl = childs [i]; wl; )
		3340	{
		3341	wn = wl->next;
		3342	cb (EV_A_ EV_CHILD, wl);
		3343	wl = wn;
		3344	}
		3345	/* EV_STAT 0x00001000 /* stat data changed */
		3346	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3347	}
		3348	#endif
		3349
2740	#if EV_MULTIPLICITY	3350	#if EV_MULTIPLICITY
2741	#include "ev_wrap.h"	3351	#include "ev_wrap.h"
2742	#endif	3352	#endif
2743		3353
2744	#ifdef __cplusplus	3354	#ifdef __cplusplus

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