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Comparing libev/ev.c (file contents):
Revision 1.239 by root, Thu May 8 20:52:13 2008 UTC vs.
Revision 1.288 by root, Sat Apr 25 14:12:48 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];
		914	ANHE *E = heap + N + HEAP0;
781		915
782	for (;;)	916	for (;;)
783	{	917	{
784	int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
785
786	if (p == k || heap [p]->at <= w->at)
787	break;
788
789	heap [k] = heap [p];
790	ev_active (heap [k]) = k;
791	k = p;
792	}
793
794	heap [k] = w;
795	ev_active (heap [k]) = k;
796	}
797
798	/* away from the root */
799	void inline_speed
800	downheap (WT *heap, int N, int k)
801	{
802	WT w = heap [k];
803	WT *E = heap + N + HEAP0;
804
805	for (;;)
806	{
807	ev_tstamp minat;	918	ev_tstamp minat;
808	WT *minpos;	919	ANHE *minpos;
809	WT *pos = heap + DHEAP * (k - HEAP0) + HEAP0;	920	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
810		921
811	// find minimum child	922	/* find minimum child */
812	if (expect_true (pos + DHEAP - 1 < E))	923	if (expect_true (pos + DHEAP - 1 < E))
813	{	924	{
814	/* fast path */
815	(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));
		929	}
		930	else if (pos < E)
		931	{
		932	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		933	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		934	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		935	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
819	}	936	}
820	else	937	else
821	{
822	/* slow path */
823	if (pos >= E)
824	break;
825	(minpos = pos + 0), (minat = (*minpos)->at);
826	if (pos + 1 < E && pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at);
827	if (pos + 2 < E && pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at);
828	if (pos + 3 < E && pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at);
829	}
830
831	if (w->at <= minat)
832	break;	938	break;
833		939
834	ev_active (*minpos) = k;	940	if (ANHE_at (he) <= minat)
		941	break;
		942
835	heap [k] = *minpos;	943	heap [k] = *minpos;
		944	ev_active (ANHE_w (*minpos)) = k;
836		945
837	k = minpos - heap;	946	k = minpos - heap;
838	}	947	}
839		948
840	heap [k] = w;	949	heap [k] = he;
841	ev_active (heap [k]) = k;	950	ev_active (ANHE_w (he)) = k;
842	}	951	}
843		952
844	#else // 4HEAP	953	#else /* 4HEAP */
845		954
846	#define HEAP0 1	955	#define HEAP0 1
		956	#define HPARENT(k) ((k) >> 1)
		957	#define UPHEAP_DONE(p,k) (!(p))
847		958
848	/* towards the root */	959	/* away from the root */
849	void inline_speed	960	inline_speed void
850	upheap (WT *heap, int k)	961	downheap (ANHE *heap, int N, int k)
851	{	962	{
852	WT w = heap [k];	963	ANHE he = heap [k];
853		964
854	for (;;)	965	for (;;)
855	{	966	{
856	int p = k >> 1;	967	int c = k << 1;
857		968
858	/* maybe we could use a dummy element at heap [0]? */	969	if (c > N + HEAP0 - 1)
859	if (!p || heap [p]->at <= w->at)
860	break;	970	break;
861		971
862	heap [k] = heap [p];	972	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
863	ev_active (heap [k]) = k;	973	? 1 : 0;
864	k = p;
865	}
866		974
867	heap [k] = w;	975	if (ANHE_at (he) <= ANHE_at (heap [c]))
868	ev_active (heap [k]) = k;
869	}
870
871	/* away from the root */
872	void inline_speed
873	downheap (WT *heap, int N, int k)
874	{
875	WT w = heap [k];
876
877	for (;;)
878	{
879	int c = k << 1;
880
881	if (c > N)
882	break;	976	break;
883		977
884	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
885	? 1 : 0;
886
887	if (w->at <= heap [c]->at)
888	break;
889
890	heap [k] = heap [c];	978	heap [k] = heap [c];
891	((W)heap [k])->active = k;	979	ev_active (ANHE_w (heap [k])) = k;
892		980
893	k = c;	981	k = c;
894	}	982	}
895		983
896	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];
897	ev_active (heap [k]) = k;	1003	ev_active (ANHE_w (heap [k])) = k;
898	}	1004	k = p;
899	#endif	1005	}
900		1006
901	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
902	adjustheap (WT *heap, int N, int k)	1013	adjustheap (ANHE *heap, int N, int k)
903	{	1014	{
		1015	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
904	upheap (heap, k);	1016	upheap (heap, k);
		1017	else
905	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);
906	}	1031	}
907		1032
908	/*****************************************************************************/	1033	/*****************************************************************************/
909		1034
		1035	/* associate signal watchers to a signal signal */
910	typedef struct	1036	typedef struct
911	{	1037	{
912	WL head;	1038	WL head;
913	EV_ATOMIC_T gotsig;	1039	EV_ATOMIC_T gotsig;
914	} ANSIG;	1040	} ANSIG;
…		…
916	static ANSIG *signals;	1042	static ANSIG *signals;
917	static int signalmax;	1043	static int signalmax;
918		1044
919	static EV_ATOMIC_T gotsig;	1045	static EV_ATOMIC_T gotsig;
920		1046
921	void inline_size
922	signals_init (ANSIG *base, int count)
923	{
924	while (count--)
925	{
926	base->head = 0;
927	base->gotsig = 0;
928
929	++base;
930	}
931	}
932
933	/*****************************************************************************/	1047	/*****************************************************************************/
934		1048
935	void inline_speed	1049	/* used to prepare libev internal fd's */
		1050	/* this is not fork-safe */
		1051	inline_speed void
936	fd_intern (int fd)	1052	fd_intern (int fd)
937	{	1053	{
938	#ifdef _WIN32	1054	#ifdef _WIN32
939	int arg = 1;	1055	unsigned long arg = 1;
940	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1056	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
941	#else	1057	#else
942	fcntl (fd, F_SETFD, FD_CLOEXEC);	1058	fcntl (fd, F_SETFD, FD_CLOEXEC);
943	fcntl (fd, F_SETFL, O_NONBLOCK);	1059	fcntl (fd, F_SETFL, O_NONBLOCK);
944	#endif	1060	#endif
945	}	1061	}
946		1062
947	static void noinline	1063	static void noinline
948	evpipe_init (EV_P)	1064	evpipe_init (EV_P)
949	{	1065	{
950	if (!ev_is_active (&pipeev))	1066	if (!ev_is_active (&pipe_w))
951	{	1067	{
952	#if EV_USE_EVENTFD	1068	#if EV_USE_EVENTFD
953	if ((evfd = eventfd (0, 0)) >= 0)	1069	if ((evfd = eventfd (0, 0)) >= 0)
954	{	1070	{
955	evpipe [0] = -1;	1071	evpipe [0] = -1;
956	fd_intern (evfd);	1072	fd_intern (evfd);
957	ev_io_set (&pipeev, evfd, EV_READ);	1073	ev_io_set (&pipe_w, evfd, EV_READ);
958	}	1074	}
959	else	1075	else
960	#endif	1076	#endif
961	{	1077	{
962	while (pipe (evpipe))	1078	while (pipe (evpipe))
963	syserr ("(libev) error creating signal/async pipe");	1079	ev_syserr ("(libev) error creating signal/async pipe");
964		1080
965	fd_intern (evpipe [0]);	1081	fd_intern (evpipe [0]);
966	fd_intern (evpipe [1]);	1082	fd_intern (evpipe [1]);
967	ev_io_set (&pipeev, evpipe [0], EV_READ);	1083	ev_io_set (&pipe_w, evpipe [0], EV_READ);
968	}	1084	}
969		1085
970	ev_io_start (EV_A_ &pipeev);	1086	ev_io_start (EV_A_ &pipe_w);
971	ev_unref (EV_A); /* watcher should not keep loop alive */	1087	ev_unref (EV_A); /* watcher should not keep loop alive */
972	}	1088	}
973	}	1089	}
974		1090
975	void inline_size	1091	inline_size void
976	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1092	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
977	{	1093	{
978	if (!*flag)	1094	if (!*flag)
979	{	1095	{
980	int old_errno = errno; /* save errno because write might clobber it */	1096	int old_errno = errno; /* save errno because write might clobber it */
…		…
993		1109
994	errno = old_errno;	1110	errno = old_errno;
995	}	1111	}
996	}	1112	}
997		1113
		1114	/* called whenever the libev signal pipe */
		1115	/* got some events (signal, async) */
998	static void	1116	static void
999	pipecb (EV_P_ ev_io *iow, int revents)	1117	pipecb (EV_P_ ev_io *iow, int revents)
1000	{	1118	{
1001	#if EV_USE_EVENTFD	1119	#if EV_USE_EVENTFD
1002	if (evfd >= 0)	1120	if (evfd >= 0)
…		…
1058	ev_feed_signal_event (EV_P_ int signum)	1176	ev_feed_signal_event (EV_P_ int signum)
1059	{	1177	{
1060	WL w;	1178	WL w;
1061		1179
1062	#if EV_MULTIPLICITY	1180	#if EV_MULTIPLICITY
1063	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));
1064	#endif	1182	#endif
1065		1183
1066	--signum;	1184	--signum;
1067		1185
1068	if (signum < 0 || signum >= signalmax)	1186	if (signum < 0 || signum >= signalmax)
…		…
1084		1202
1085	#ifndef WIFCONTINUED	1203	#ifndef WIFCONTINUED
1086	# define WIFCONTINUED(status) 0	1204	# define WIFCONTINUED(status) 0
1087	#endif	1205	#endif
1088		1206
1089	void inline_speed	1207	/* handle a single child status event */
		1208	inline_speed void
1090	child_reap (EV_P_ int chain, int pid, int status)	1209	child_reap (EV_P_ int chain, int pid, int status)
1091	{	1210	{
1092	ev_child *w;	1211	ev_child *w;
1093	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1212	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1094		1213
…		…
1107		1226
1108	#ifndef WCONTINUED	1227	#ifndef WCONTINUED
1109	# define WCONTINUED 0	1228	# define WCONTINUED 0
1110	#endif	1229	#endif
1111		1230
		1231	/* called on sigchld etc., calls waitpid */
1112	static void	1232	static void
1113	childcb (EV_P_ ev_signal *sw, int revents)	1233	childcb (EV_P_ ev_signal *sw, int revents)
1114	{	1234	{
1115	int pid, status;	1235	int pid, status;
1116		1236
…		…
1197	/* kqueue is borked on everything but netbsd apparently */	1317	/* kqueue is borked on everything but netbsd apparently */
1198	/* 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 */
1199	flags &= ~EVBACKEND_KQUEUE;	1319	flags &= ~EVBACKEND_KQUEUE;
1200	#endif	1320	#endif
1201	#ifdef __APPLE__	1321	#ifdef __APPLE__
1202	// flags &= ~EVBACKEND_KQUEUE; for documentation	1322	/* only select works correctly on that "unix-certified" platform */
1203	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 */
1204	#endif	1325	#endif
1205		1326
1206	return flags;	1327	return flags;
1207	}	1328	}
1208		1329
…		…
1240	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1361	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1241	{	1362	{
1242	timeout_blocktime = interval;	1363	timeout_blocktime = interval;
1243	}	1364	}
1244		1365
		1366	/* initialise a loop structure, must be zero-initialised */
1245	static void noinline	1367	static void noinline
1246	loop_init (EV_P_ unsigned int flags)	1368	loop_init (EV_P_ unsigned int flags)
1247	{	1369	{
1248	if (!backend)	1370	if (!backend)
1249	{	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
1250	#if EV_USE_MONOTONIC	1382	#if EV_USE_MONOTONIC
		1383	if (!have_monotonic)
1251	{	1384	{
1252	struct timespec ts;	1385	struct timespec ts;
		1386
1253	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1387	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1254	have_monotonic = 1;	1388	have_monotonic = 1;
1255	}	1389	}
1256	#endif	1390	#endif
1257		1391
1258	ev_rt_now = ev_time ();	1392	ev_rt_now = ev_time ();
1259	mn_now = get_clock ();	1393	mn_now = get_clock ();
1260	now_floor = mn_now;	1394	now_floor = mn_now;
…		…
1297	#endif	1431	#endif
1298	#if EV_USE_SELECT	1432	#if EV_USE_SELECT
1299	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1433	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1300	#endif	1434	#endif
1301		1435
		1436	ev_prepare_init (&pending_w, pendingcb);
		1437
1302	ev_init (&pipeev, pipecb);	1438	ev_init (&pipe_w, pipecb);
1303	ev_set_priority (&pipeev, EV_MAXPRI);	1439	ev_set_priority (&pipe_w, EV_MAXPRI);
1304	}	1440	}
1305	}	1441	}
1306		1442
		1443	/* free up a loop structure */
1307	static void noinline	1444	static void noinline
1308	loop_destroy (EV_P)	1445	loop_destroy (EV_P)
1309	{	1446	{
1310	int i;	1447	int i;
1311		1448
1312	if (ev_is_active (&pipeev))	1449	if (ev_is_active (&pipe_w))
1313	{	1450	{
1314	ev_ref (EV_A); /* signal watcher */	1451	ev_ref (EV_A); /* signal watcher */
1315	ev_io_stop (EV_A_ &pipeev);	1452	ev_io_stop (EV_A_ &pipe_w);
1316		1453
1317	#if EV_USE_EVENTFD	1454	#if EV_USE_EVENTFD
1318	if (evfd >= 0)	1455	if (evfd >= 0)
1319	close (evfd);	1456	close (evfd);
1320	#endif	1457	#endif
…		…
1359	}	1496	}
1360		1497
1361	ev_free (anfds); anfdmax = 0;	1498	ev_free (anfds); anfdmax = 0;
1362		1499
1363	/* 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);
1364	array_free (fdchange, EMPTY);	1502	array_free (fdchange, EMPTY);
1365	array_free (timer, EMPTY);	1503	array_free (timer, EMPTY);
1366	#if EV_PERIODIC_ENABLE	1504	#if EV_PERIODIC_ENABLE
1367	array_free (periodic, EMPTY);	1505	array_free (periodic, EMPTY);
1368	#endif	1506	#endif
…		…
1377		1515
1378	backend = 0;	1516	backend = 0;
1379	}	1517	}
1380		1518
1381	#if EV_USE_INOTIFY	1519	#if EV_USE_INOTIFY
1382	void inline_size infy_fork (EV_P);	1520	inline_size void infy_fork (EV_P);
1383	#endif	1521	#endif
1384		1522
1385	void inline_size	1523	inline_size void
1386	loop_fork (EV_P)	1524	loop_fork (EV_P)
1387	{	1525	{
1388	#if EV_USE_PORT	1526	#if EV_USE_PORT
1389	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1527	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1390	#endif	1528	#endif
…		…
1396	#endif	1534	#endif
1397	#if EV_USE_INOTIFY	1535	#if EV_USE_INOTIFY
1398	infy_fork (EV_A);	1536	infy_fork (EV_A);
1399	#endif	1537	#endif
1400		1538
1401	if (ev_is_active (&pipeev))	1539	if (ev_is_active (&pipe_w))
1402	{	1540	{
1403	/* this "locks" the handlers against writing to the pipe */	1541	/* this "locks" the handlers against writing to the pipe */
1404	/* while we modify the fd vars */	1542	/* while we modify the fd vars */
1405	gotsig = 1;	1543	gotsig = 1;
1406	#if EV_ASYNC_ENABLE	1544	#if EV_ASYNC_ENABLE
1407	gotasync = 1;	1545	gotasync = 1;
1408	#endif	1546	#endif
1409		1547
1410	ev_ref (EV_A);	1548	ev_ref (EV_A);
1411	ev_io_stop (EV_A_ &pipeev);	1549	ev_io_stop (EV_A_ &pipe_w);
1412		1550
1413	#if EV_USE_EVENTFD	1551	#if EV_USE_EVENTFD
1414	if (evfd >= 0)	1552	if (evfd >= 0)
1415	close (evfd);	1553	close (evfd);
1416	#endif	1554	#endif
…		…
1421	close (evpipe [1]);	1559	close (evpipe [1]);
1422	}	1560	}
1423		1561
1424	evpipe_init (EV_A);	1562	evpipe_init (EV_A);
1425	/* now iterate over everything, in case we missed something */	1563	/* now iterate over everything, in case we missed something */
1426	pipecb (EV_A_ &pipeev, EV_READ);	1564	pipecb (EV_A_ &pipe_w, EV_READ);
1427	}	1565	}
1428		1566
1429	postfork = 0;	1567	postfork = 0;
1430	}	1568	}
1431		1569
1432	#if EV_MULTIPLICITY	1570	#if EV_MULTIPLICITY
		1571
1433	struct ev_loop *	1572	struct ev_loop *
1434	ev_loop_new (unsigned int flags)	1573	ev_loop_new (unsigned int flags)
1435	{	1574	{
1436	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));
1437		1576
…		…
1455	void	1594	void
1456	ev_loop_fork (EV_P)	1595	ev_loop_fork (EV_P)
1457	{	1596	{
1458	postfork = 1; /* must be in line with ev_default_fork */	1597	postfork = 1; /* must be in line with ev_default_fork */
1459	}	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)
1460	#endif	1695	# endif
		1696	#endif
		1697	}
		1698
		1699	#endif /* multiplicity */
1461		1700
1462	#if EV_MULTIPLICITY	1701	#if EV_MULTIPLICITY
1463	struct ev_loop *	1702	struct ev_loop *
1464	ev_default_loop_init (unsigned int flags)	1703	ev_default_loop_init (unsigned int flags)
1465	#else	1704	#else
…		…
1498	{	1737	{
1499	#if EV_MULTIPLICITY	1738	#if EV_MULTIPLICITY
1500	struct ev_loop *loop = ev_default_loop_ptr;	1739	struct ev_loop *loop = ev_default_loop_ptr;
1501	#endif	1740	#endif
1502		1741
		1742	ev_default_loop_ptr = 0;
		1743
1503	#ifndef _WIN32	1744	#ifndef _WIN32
1504	ev_ref (EV_A); /* child watcher */	1745	ev_ref (EV_A); /* child watcher */
1505	ev_signal_stop (EV_A_ &childev);	1746	ev_signal_stop (EV_A_ &childev);
1506	#endif	1747	#endif
1507		1748
…		…
1513	{	1754	{
1514	#if EV_MULTIPLICITY	1755	#if EV_MULTIPLICITY
1515	struct ev_loop *loop = ev_default_loop_ptr;	1756	struct ev_loop *loop = ev_default_loop_ptr;
1516	#endif	1757	#endif
1517		1758
1518	if (backend)
1519	postfork = 1; /* must be in line with ev_loop_fork */	1759	postfork = 1; /* must be in line with ev_loop_fork */
1520	}	1760	}
1521		1761
1522	/*****************************************************************************/	1762	/*****************************************************************************/
1523		1763
1524	void	1764	void
1525	ev_invoke (EV_P_ void *w, int revents)	1765	ev_invoke (EV_P_ void *w, int revents)
1526	{	1766	{
1527	EV_CB_INVOKE ((W)w, revents);	1767	EV_CB_INVOKE ((W)w, revents);
1528	}	1768	}
1529		1769
1530	void inline_speed	1770	inline_speed void
1531	call_pending (EV_P)	1771	call_pending (EV_P)
1532	{	1772	{
1533	int pri;	1773	int pri;
1534		1774
1535	for (pri = NUMPRI; pri--; )	1775	for (pri = NUMPRI; pri--; )
1536	while (pendingcnt [pri])	1776	while (pendingcnt [pri])
1537	{	1777	{
1538	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1778	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1539		1779
1540	if (expect_true (p->w))
1541	{
1542	/*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 */
1543		1782
1544	p->w->pending = 0;	1783	p->w->pending = 0;
1545	EV_CB_INVOKE (p->w, p->events);	1784	EV_CB_INVOKE (p->w, p->events);
1546	}	1785	EV_FREQUENT_CHECK;
1547	}	1786	}
1548	}	1787	}
1549		1788
1550	#if EV_IDLE_ENABLE	1789	#if EV_IDLE_ENABLE
1551	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
1552	idle_reify (EV_P)	1793	idle_reify (EV_P)
1553	{	1794	{
1554	if (expect_false (idleall))	1795	if (expect_false (idleall))
1555	{	1796	{
1556	int pri;	1797	int pri;
…		…
1568	}	1809	}
1569	}	1810	}
1570	}	1811	}
1571	#endif	1812	#endif
1572		1813
1573	void inline_size	1814	/* make timers pending */
		1815	inline_size void
1574	timers_reify (EV_P)	1816	timers_reify (EV_P)
1575	{	1817	{
		1818	EV_FREQUENT_CHECK;
		1819
1576	while (timercnt && ev_at (timers [HEAP0]) <= mn_now)	1820	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1577	{	1821	{
1578	ev_timer *w = (ev_timer *)timers [HEAP0];	1822	do
1579
1580	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1581
1582	/* first reschedule or stop timer */
1583	if (w->repeat)
1584	{	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
1585	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.));
1586		1836
1587	ev_at (w) += w->repeat;	1837	ANHE_at_cache (timers [HEAP0]);
1588	if (ev_at (w) < mn_now)
1589	ev_at (w) = mn_now;
1590
1591	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);
1592	}	1845	}
1593	else	1846	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1594	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1595		1847
1596	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1848	feed_reverse_done (EV_A_ EV_TIMEOUT);
1597	}	1849	}
1598	}	1850	}
1599		1851
1600	#if EV_PERIODIC_ENABLE	1852	#if EV_PERIODIC_ENABLE
1601	void inline_size	1853	/* make periodics pending */
		1854	inline_size void
1602	periodics_reify (EV_P)	1855	periodics_reify (EV_P)
1603	{	1856	{
		1857	EV_FREQUENT_CHECK;
		1858
1604	while (periodiccnt && ev_at (periodics [HEAP0]) <= ev_rt_now)	1859	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1605	{	1860	{
1606	ev_periodic *w = (ev_periodic *)periodics [HEAP0];	1861	int feed_count = 0;
1607		1862
1608	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	1863	do
1609
1610	/* first reschedule or stop timer */
1611	if (w->reschedule_cb)
1612	{	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	{
1613	ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);	1872	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1873
1614	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]);
1615	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);
1616	}	1903	}
1617	else if (w->interval)	1904	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1618	{
1619	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1620	if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1621	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1622	downheap (periodics, periodiccnt, HEAP0);
1623	}
1624	else
1625	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1626		1905
1627	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1906	feed_reverse_done (EV_A_ EV_PERIODIC);
1628	}	1907	}
1629	}	1908	}
1630		1909
		1910	/* simply recalculate all periodics */
		1911	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1631	static void noinline	1912	static void noinline
1632	periodics_reschedule (EV_P)	1913	periodics_reschedule (EV_P)
1633	{	1914	{
1634	int i;	1915	int i;
1635		1916
1636	/* adjust periodics after time jump */	1917	/* adjust periodics after time jump */
1637	for (i = 1; i <= periodiccnt; ++i)	1918	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1638	{	1919	{
1639	ev_periodic *w = (ev_periodic *)periodics [i];	1920	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1640		1921
1641	if (w->reschedule_cb)	1922	if (w->reschedule_cb)
1642	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1923	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1643	else if (w->interval)	1924	else if (w->interval)
1644	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)
1645	}	1941	{
1646		1942	ANHE *he = timers + i + HEAP0;
1647	/* now rebuild the heap */	1943	ANHE_w (*he)->at += adjust;
1648	for (i = periodiccnt >> 1; --i; )	1944	ANHE_at_cache (*he);
1649	downheap (periodics, periodiccnt, i + HEAP0);	1945	}
1650	}	1946	}
1651	#endif
1652		1947
1653	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
1654	time_update (EV_P_ ev_tstamp max_block)	1951	time_update (EV_P_ ev_tstamp max_block)
1655	{	1952	{
1656	int i;	1953	int i;
1657		1954
1658	#if EV_USE_MONOTONIC	1955	#if EV_USE_MONOTONIC
…		…
1691	ev_rt_now = ev_time ();	1988	ev_rt_now = ev_time ();
1692	mn_now = get_clock ();	1989	mn_now = get_clock ();
1693	now_floor = mn_now;	1990	now_floor = mn_now;
1694	}	1991	}
1695		1992
		1993	/* no timer adjustment, as the monotonic clock doesn't jump */
		1994	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1696	# if EV_PERIODIC_ENABLE	1995	# if EV_PERIODIC_ENABLE
1697	periodics_reschedule (EV_A);	1996	periodics_reschedule (EV_A);
1698	# endif	1997	# endif
1699	/* no timer adjustment, as the monotonic clock doesn't jump */
1700	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1701	}	1998	}
1702	else	1999	else
1703	#endif	2000	#endif
1704	{	2001	{
1705	ev_rt_now = ev_time ();	2002	ev_rt_now = ev_time ();
1706		2003
1707	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2004	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1708	{	2005	{
		2006	/* adjust timers. this is easy, as the offset is the same for all of them */
		2007	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1709	#if EV_PERIODIC_ENABLE	2008	#if EV_PERIODIC_ENABLE
1710	periodics_reschedule (EV_A);	2009	periodics_reschedule (EV_A);
1711	#endif	2010	#endif
1712	/* adjust timers. this is easy, as the offset is the same for all of them */
1713	for (i = 1; i <= timercnt; ++i)
1714	ev_at (timers [i]) += ev_rt_now - mn_now;
1715	}	2011	}
1716		2012
1717	mn_now = ev_rt_now;	2013	mn_now = ev_rt_now;
1718	}	2014	}
1719	}	2015	}
1720		2016
1721	void
1722	ev_ref (EV_P)
1723	{
1724	++activecnt;
1725	}
1726
1727	void
1728	ev_unref (EV_P)
1729	{
1730	--activecnt;
1731	}
1732
1733	static int loop_done;	2017	static int loop_done;
1734		2018
1735	void	2019	void
1736	ev_loop (EV_P_ int flags)	2020	ev_loop (EV_P_ int flags)
1737	{	2021	{
…		…
1739		2023
1740	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2024	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1741		2025
1742	do	2026	do
1743	{	2027	{
		2028	#if EV_VERIFY >= 2
		2029	ev_loop_verify (EV_A);
		2030	#endif
		2031
1744	#ifndef _WIN32	2032	#ifndef _WIN32
1745	if (expect_false (curpid)) /* penalise the forking check even more */	2033	if (expect_false (curpid)) /* penalise the forking check even more */
1746	if (expect_false (getpid () != curpid))	2034	if (expect_false (getpid () != curpid))
1747	{	2035	{
1748	curpid = getpid ();	2036	curpid = getpid ();
…		…
1765	{	2053	{
1766	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2054	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1767	call_pending (EV_A);	2055	call_pending (EV_A);
1768	}	2056	}
1769		2057
1770	if (expect_false (!activecnt))
1771	break;
1772
1773	/* we might have forked, so reify kernel state if necessary */	2058	/* we might have forked, so reify kernel state if necessary */
1774	if (expect_false (postfork))	2059	if (expect_false (postfork))
1775	loop_fork (EV_A);	2060	loop_fork (EV_A);
1776		2061
1777	/* update fd-related kernel structures */	2062	/* update fd-related kernel structures */
…		…
1789		2074
1790	waittime = MAX_BLOCKTIME;	2075	waittime = MAX_BLOCKTIME;
1791		2076
1792	if (timercnt)	2077	if (timercnt)
1793	{	2078	{
1794	ev_tstamp to = ev_at (timers [HEAP0]) - mn_now + backend_fudge;	2079	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1795	if (waittime > to) waittime = to;	2080	if (waittime > to) waittime = to;
1796	}	2081	}
1797		2082
1798	#if EV_PERIODIC_ENABLE	2083	#if EV_PERIODIC_ENABLE
1799	if (periodiccnt)	2084	if (periodiccnt)
1800	{	2085	{
1801	ev_tstamp to = ev_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2086	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1802	if (waittime > to) waittime = to;	2087	if (waittime > to) waittime = to;
1803	}	2088	}
1804	#endif	2089	#endif
1805		2090
1806	if (expect_false (waittime < timeout_blocktime))	2091	if (expect_false (waittime < timeout_blocktime))
…		…
1856	ev_unloop (EV_P_ int how)	2141	ev_unloop (EV_P_ int how)
1857	{	2142	{
1858	loop_done = how;	2143	loop_done = how;
1859	}	2144	}
1860		2145
		2146	void
		2147	ev_ref (EV_P)
		2148	{
		2149	++activecnt;
		2150	}
		2151
		2152	void
		2153	ev_unref (EV_P)
		2154	{
		2155	--activecnt;
		2156	}
		2157
		2158	void
		2159	ev_now_update (EV_P)
		2160	{
		2161	time_update (EV_A_ 1e100);
		2162	}
		2163
		2164	void
		2165	ev_suspend (EV_P)
		2166	{
		2167	ev_now_update (EV_A);
		2168	}
		2169
		2170	void
		2171	ev_resume (EV_P)
		2172	{
		2173	ev_tstamp mn_prev = mn_now;
		2174
		2175	ev_now_update (EV_A);
		2176	timers_reschedule (EV_A_ mn_now - mn_prev);
		2177	#if EV_PERIODIC_ENABLE
		2178	/* TODO: really do this? */
		2179	periodics_reschedule (EV_A);
		2180	#endif
		2181	}
		2182
1861	/*****************************************************************************/	2183	/*****************************************************************************/
		2184	/* singly-linked list management, used when the expected list length is short */
1862		2185
1863	void inline_size	2186	inline_size void
1864	wlist_add (WL *head, WL elem)	2187	wlist_add (WL *head, WL elem)
1865	{	2188	{
1866	elem->next = *head;	2189	elem->next = *head;
1867	*head = elem;	2190	*head = elem;
1868	}	2191	}
1869		2192
1870	void inline_size	2193	inline_size void
1871	wlist_del (WL *head, WL elem)	2194	wlist_del (WL *head, WL elem)
1872	{	2195	{
1873	while (*head)	2196	while (*head)
1874	{	2197	{
1875	if (*head == elem)	2198	if (*head == elem)
…		…
1880		2203
1881	head = &(*head)->next;	2204	head = &(*head)->next;
1882	}	2205	}
1883	}	2206	}
1884		2207
1885	void inline_speed	2208	/* internal, faster, version of ev_clear_pending */
		2209	inline_speed void
1886	clear_pending (EV_P_ W w)	2210	clear_pending (EV_P_ W w)
1887	{	2211	{
1888	if (w->pending)	2212	if (w->pending)
1889	{	2213	{
1890	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2214	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1891	w->pending = 0;	2215	w->pending = 0;
1892	}	2216	}
1893	}	2217	}
1894		2218
1895	int	2219	int
…		…
1899	int pending = w_->pending;	2223	int pending = w_->pending;
1900		2224
1901	if (expect_true (pending))	2225	if (expect_true (pending))
1902	{	2226	{
1903	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2227	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2228	p->w = (W)&pending_w;
1904	w_->pending = 0;	2229	w_->pending = 0;
1905	p->w = 0;
1906	return p->events;	2230	return p->events;
1907	}	2231	}
1908	else	2232	else
1909	return 0;	2233	return 0;
1910	}	2234	}
1911		2235
1912	void inline_size	2236	inline_size void
1913	pri_adjust (EV_P_ W w)	2237	pri_adjust (EV_P_ W w)
1914	{	2238	{
1915	int pri = w->priority;	2239	int pri = w->priority;
1916	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2240	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1917	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2241	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1918	w->priority = pri;	2242	w->priority = pri;
1919	}	2243	}
1920		2244
1921	void inline_speed	2245	inline_speed void
1922	ev_start (EV_P_ W w, int active)	2246	ev_start (EV_P_ W w, int active)
1923	{	2247	{
1924	pri_adjust (EV_A_ w);	2248	pri_adjust (EV_A_ w);
1925	w->active = active;	2249	w->active = active;
1926	ev_ref (EV_A);	2250	ev_ref (EV_A);
1927	}	2251	}
1928		2252
1929	void inline_size	2253	inline_size void
1930	ev_stop (EV_P_ W w)	2254	ev_stop (EV_P_ W w)
1931	{	2255	{
1932	ev_unref (EV_A);	2256	ev_unref (EV_A);
1933	w->active = 0;	2257	w->active = 0;
1934	}	2258	}
…		…
1941	int fd = w->fd;	2265	int fd = w->fd;
1942		2266
1943	if (expect_false (ev_is_active (w)))	2267	if (expect_false (ev_is_active (w)))
1944	return;	2268	return;
1945		2269
1946	assert (("ev_io_start called with negative fd", fd >= 0));	2270	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2271	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
		2272
		2273	EV_FREQUENT_CHECK;
1947		2274
1948	ev_start (EV_A_ (W)w, 1);	2275	ev_start (EV_A_ (W)w, 1);
1949	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2276	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1950	wlist_add (&anfds[fd].head, (WL)w);	2277	wlist_add (&anfds[fd].head, (WL)w);
1951		2278
1952	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2279	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
1953	w->events &= ~EV_IOFDSET;	2280	w->events &= ~EV__IOFDSET;
		2281
		2282	EV_FREQUENT_CHECK;
1954	}	2283	}
1955		2284
1956	void noinline	2285	void noinline
1957	ev_io_stop (EV_P_ ev_io *w)	2286	ev_io_stop (EV_P_ ev_io *w)
1958	{	2287	{
1959	clear_pending (EV_A_ (W)w);	2288	clear_pending (EV_A_ (W)w);
1960	if (expect_false (!ev_is_active (w)))	2289	if (expect_false (!ev_is_active (w)))
1961	return;	2290	return;
1962		2291
1963	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2292	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		2293
		2294	EV_FREQUENT_CHECK;
1964		2295
1965	wlist_del (&anfds[w->fd].head, (WL)w);	2296	wlist_del (&anfds[w->fd].head, (WL)w);
1966	ev_stop (EV_A_ (W)w);	2297	ev_stop (EV_A_ (W)w);
1967		2298
1968	fd_change (EV_A_ w->fd, 1);	2299	fd_change (EV_A_ w->fd, 1);
		2300
		2301	EV_FREQUENT_CHECK;
1969	}	2302	}
1970		2303
1971	void noinline	2304	void noinline
1972	ev_timer_start (EV_P_ ev_timer *w)	2305	ev_timer_start (EV_P_ ev_timer *w)
1973	{	2306	{
1974	if (expect_false (ev_is_active (w)))	2307	if (expect_false (ev_is_active (w)))
1975	return;	2308	return;
1976		2309
1977	ev_at (w) += mn_now;	2310	ev_at (w) += mn_now;
1978		2311
1979	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2312	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1980		2313
		2314	EV_FREQUENT_CHECK;
		2315
		2316	++timercnt;
1981	ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1);	2317	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1982	array_needsize (WT, timers, timermax, timercnt + HEAP0, EMPTY2);	2318	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1983	timers [ev_active (w)] = (WT)w;	2319	ANHE_w (timers [ev_active (w)]) = (WT)w;
		2320	ANHE_at_cache (timers [ev_active (w)]);
1984	upheap (timers, ev_active (w));	2321	upheap (timers, ev_active (w));
1985		2322
		2323	EV_FREQUENT_CHECK;
		2324
1986	/*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/	2325	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1987	}	2326	}
1988		2327
1989	void noinline	2328	void noinline
1990	ev_timer_stop (EV_P_ ev_timer *w)	2329	ev_timer_stop (EV_P_ ev_timer *w)
1991	{	2330	{
1992	clear_pending (EV_A_ (W)w);	2331	clear_pending (EV_A_ (W)w);
1993	if (expect_false (!ev_is_active (w)))	2332	if (expect_false (!ev_is_active (w)))
1994	return;	2333	return;
1995		2334
		2335	EV_FREQUENT_CHECK;
		2336
1996	{	2337	{
1997	int active = ev_active (w);	2338	int active = ev_active (w);
1998		2339
1999	assert (("internal timer heap corruption", timers [active] == (WT)w));	2340	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2000		2341
		2342	--timercnt;
		2343
2001	if (expect_true (active < timercnt + HEAP0 - 1))	2344	if (expect_true (active < timercnt + HEAP0))
2002	{	2345	{
2003	timers [active] = timers [timercnt + HEAP0 - 1];	2346	timers [active] = timers [timercnt + HEAP0];
2004	adjustheap (timers, timercnt, active);	2347	adjustheap (timers, timercnt, active);
2005	}	2348	}
2006
2007	--timercnt;
2008	}	2349	}
		2350
		2351	EV_FREQUENT_CHECK;
2009		2352
2010	ev_at (w) -= mn_now;	2353	ev_at (w) -= mn_now;
2011		2354
2012	ev_stop (EV_A_ (W)w);	2355	ev_stop (EV_A_ (W)w);
2013	}	2356	}
2014		2357
2015	void noinline	2358	void noinline
2016	ev_timer_again (EV_P_ ev_timer *w)	2359	ev_timer_again (EV_P_ ev_timer *w)
2017	{	2360	{
		2361	EV_FREQUENT_CHECK;
		2362
2018	if (ev_is_active (w))	2363	if (ev_is_active (w))
2019	{	2364	{
2020	if (w->repeat)	2365	if (w->repeat)
2021	{	2366	{
2022	ev_at (w) = mn_now + w->repeat;	2367	ev_at (w) = mn_now + w->repeat;
		2368	ANHE_at_cache (timers [ev_active (w)]);
2023	adjustheap (timers, timercnt, ev_active (w));	2369	adjustheap (timers, timercnt, ev_active (w));
2024	}	2370	}
2025	else	2371	else
2026	ev_timer_stop (EV_A_ w);	2372	ev_timer_stop (EV_A_ w);
2027	}	2373	}
2028	else if (w->repeat)	2374	else if (w->repeat)
2029	{	2375	{
2030	ev_at (w) = w->repeat;	2376	ev_at (w) = w->repeat;
2031	ev_timer_start (EV_A_ w);	2377	ev_timer_start (EV_A_ w);
2032	}	2378	}
		2379
		2380	EV_FREQUENT_CHECK;
2033	}	2381	}
2034		2382
2035	#if EV_PERIODIC_ENABLE	2383	#if EV_PERIODIC_ENABLE
2036	void noinline	2384	void noinline
2037	ev_periodic_start (EV_P_ ev_periodic *w)	2385	ev_periodic_start (EV_P_ ev_periodic *w)
…		…
2041		2389
2042	if (w->reschedule_cb)	2390	if (w->reschedule_cb)
2043	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2391	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2044	else if (w->interval)	2392	else if (w->interval)
2045	{	2393	{
2046	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2394	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2047	/* this formula differs from the one in periodic_reify because we do not always round up */	2395	/* this formula differs from the one in periodic_reify because we do not always round up */
2048	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2396	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2049	}	2397	}
2050	else	2398	else
2051	ev_at (w) = w->offset;	2399	ev_at (w) = w->offset;
2052		2400
		2401	EV_FREQUENT_CHECK;
		2402
		2403	++periodiccnt;
2053	ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1);	2404	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2054	array_needsize (WT, periodics, periodicmax, periodiccnt + HEAP0, EMPTY2);	2405	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2055	periodics [ev_active (w)] = (WT)w;	2406	ANHE_w (periodics [ev_active (w)]) = (WT)w;
		2407	ANHE_at_cache (periodics [ev_active (w)]);
2056	upheap (periodics, ev_active (w));	2408	upheap (periodics, ev_active (w));
2057		2409
		2410	EV_FREQUENT_CHECK;
		2411
2058	/*assert (("internal periodic heap corruption", periodics [ev_active (w)] == w));*/	2412	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2059	}	2413	}
2060		2414
2061	void noinline	2415	void noinline
2062	ev_periodic_stop (EV_P_ ev_periodic *w)	2416	ev_periodic_stop (EV_P_ ev_periodic *w)
2063	{	2417	{
2064	clear_pending (EV_A_ (W)w);	2418	clear_pending (EV_A_ (W)w);
2065	if (expect_false (!ev_is_active (w)))	2419	if (expect_false (!ev_is_active (w)))
2066	return;	2420	return;
2067		2421
		2422	EV_FREQUENT_CHECK;
		2423
2068	{	2424	{
2069	int active = ev_active (w);	2425	int active = ev_active (w);
2070		2426
2071	assert (("internal periodic heap corruption", periodics [active] == (WT)w));	2427	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2072		2428
		2429	--periodiccnt;
		2430
2073	if (expect_true (active < periodiccnt + HEAP0 - 1))	2431	if (expect_true (active < periodiccnt + HEAP0))
2074	{	2432	{
2075	periodics [active] = periodics [periodiccnt + HEAP0 - 1];	2433	periodics [active] = periodics [periodiccnt + HEAP0];
2076	adjustheap (periodics, periodiccnt, active);	2434	adjustheap (periodics, periodiccnt, active);
2077	}	2435	}
2078
2079	--periodiccnt;
2080	}	2436	}
		2437
		2438	EV_FREQUENT_CHECK;
2081		2439
2082	ev_stop (EV_A_ (W)w);	2440	ev_stop (EV_A_ (W)w);
2083	}	2441	}
2084		2442
2085	void noinline	2443	void noinline
…		…
2097		2455
2098	void noinline	2456	void noinline
2099	ev_signal_start (EV_P_ ev_signal *w)	2457	ev_signal_start (EV_P_ ev_signal *w)
2100	{	2458	{
2101	#if EV_MULTIPLICITY	2459	#if EV_MULTIPLICITY
2102	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2460	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2103	#endif	2461	#endif
2104	if (expect_false (ev_is_active (w)))	2462	if (expect_false (ev_is_active (w)))
2105	return;	2463	return;
2106		2464
2107	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2465	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2108		2466
2109	evpipe_init (EV_A);	2467	evpipe_init (EV_A);
		2468
		2469	EV_FREQUENT_CHECK;
2110		2470
2111	{	2471	{
2112	#ifndef _WIN32	2472	#ifndef _WIN32
2113	sigset_t full, prev;	2473	sigset_t full, prev;
2114	sigfillset (&full);	2474	sigfillset (&full);
2115	sigprocmask (SIG_SETMASK, &full, &prev);	2475	sigprocmask (SIG_SETMASK, &full, &prev);
2116	#endif	2476	#endif
2117		2477
2118	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2478	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2119		2479
2120	#ifndef _WIN32	2480	#ifndef _WIN32
2121	sigprocmask (SIG_SETMASK, &prev, 0);	2481	sigprocmask (SIG_SETMASK, &prev, 0);
2122	#endif	2482	#endif
2123	}	2483	}
…		…
2135	sigfillset (&sa.sa_mask);	2495	sigfillset (&sa.sa_mask);
2136	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2496	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2137	sigaction (w->signum, &sa, 0);	2497	sigaction (w->signum, &sa, 0);
2138	#endif	2498	#endif
2139	}	2499	}
		2500
		2501	EV_FREQUENT_CHECK;
2140	}	2502	}
2141		2503
2142	void noinline	2504	void noinline
2143	ev_signal_stop (EV_P_ ev_signal *w)	2505	ev_signal_stop (EV_P_ ev_signal *w)
2144	{	2506	{
2145	clear_pending (EV_A_ (W)w);	2507	clear_pending (EV_A_ (W)w);
2146	if (expect_false (!ev_is_active (w)))	2508	if (expect_false (!ev_is_active (w)))
2147	return;	2509	return;
2148		2510
		2511	EV_FREQUENT_CHECK;
		2512
2149	wlist_del (&signals [w->signum - 1].head, (WL)w);	2513	wlist_del (&signals [w->signum - 1].head, (WL)w);
2150	ev_stop (EV_A_ (W)w);	2514	ev_stop (EV_A_ (W)w);
2151		2515
2152	if (!signals [w->signum - 1].head)	2516	if (!signals [w->signum - 1].head)
2153	signal (w->signum, SIG_DFL);	2517	signal (w->signum, SIG_DFL);
		2518
		2519	EV_FREQUENT_CHECK;
2154	}	2520	}
2155		2521
2156	void	2522	void
2157	ev_child_start (EV_P_ ev_child *w)	2523	ev_child_start (EV_P_ ev_child *w)
2158	{	2524	{
2159	#if EV_MULTIPLICITY	2525	#if EV_MULTIPLICITY
2160	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2526	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2161	#endif	2527	#endif
2162	if (expect_false (ev_is_active (w)))	2528	if (expect_false (ev_is_active (w)))
2163	return;	2529	return;
2164		2530
		2531	EV_FREQUENT_CHECK;
		2532
2165	ev_start (EV_A_ (W)w, 1);	2533	ev_start (EV_A_ (W)w, 1);
2166	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2534	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2535
		2536	EV_FREQUENT_CHECK;
2167	}	2537	}
2168		2538
2169	void	2539	void
2170	ev_child_stop (EV_P_ ev_child *w)	2540	ev_child_stop (EV_P_ ev_child *w)
2171	{	2541	{
2172	clear_pending (EV_A_ (W)w);	2542	clear_pending (EV_A_ (W)w);
2173	if (expect_false (!ev_is_active (w)))	2543	if (expect_false (!ev_is_active (w)))
2174	return;	2544	return;
2175		2545
		2546	EV_FREQUENT_CHECK;
		2547
2176	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2548	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2177	ev_stop (EV_A_ (W)w);	2549	ev_stop (EV_A_ (W)w);
		2550
		2551	EV_FREQUENT_CHECK;
2178	}	2552	}
2179		2553
2180	#if EV_STAT_ENABLE	2554	#if EV_STAT_ENABLE
2181		2555
2182	# ifdef _WIN32	2556	# ifdef _WIN32
2183	# undef lstat	2557	# undef lstat
2184	# define lstat(a,b) _stati64 (a,b)	2558	# define lstat(a,b) _stati64 (a,b)
2185	# endif	2559	# endif
2186		2560
2187	#define DEF_STAT_INTERVAL 5.0074891	2561	#define DEF_STAT_INTERVAL 5.0074891
		2562	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2188	#define MIN_STAT_INTERVAL 0.1074891	2563	#define MIN_STAT_INTERVAL 0.1074891
2189		2564
2190	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2565	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2191		2566
2192	#if EV_USE_INOTIFY	2567	#if EV_USE_INOTIFY
2193	# define EV_INOTIFY_BUFSIZE 8192	2568	# define EV_INOTIFY_BUFSIZE 8192
…		…
2197	{	2572	{
2198	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);	2573	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);
2199		2574
2200	if (w->wd < 0)	2575	if (w->wd < 0)
2201	{	2576	{
		2577	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2202	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2578	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2203		2579
2204	/* monitor some parent directory for speedup hints */	2580	/* monitor some parent directory for speedup hints */
2205	/* note that exceeding the hardcoded limit is not a correctness issue, */	2581	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2206	/* but an efficiency issue only */	2582	/* but an efficiency issue only */
2207	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2583	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2208	{	2584	{
2209	char path [4096];	2585	char path [4096];
2210	strcpy (path, w->path);	2586	strcpy (path, w->path);
…		…
2214	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2590	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2215	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2591	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2216		2592
2217	char *pend = strrchr (path, '/');	2593	char *pend = strrchr (path, '/');
2218		2594
2219	if (!pend)	2595	if (!pend || pend == path)
2220	break; /* whoops, no '/', complain to your admin */	2596	break;
2221		2597
2222	*pend = 0;	2598	*pend = 0;
2223	w->wd = inotify_add_watch (fs_fd, path, mask);	2599	w->wd = inotify_add_watch (fs_fd, path, mask);
2224	}	2600	}
2225	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2601	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2226	}	2602	}
2227	}	2603	}
2228	else
2229	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2230		2604
2231	if (w->wd >= 0)	2605	if (w->wd >= 0)
		2606	{
2232	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2607	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2608
		2609	/* now local changes will be tracked by inotify, but remote changes won't */
		2610	/* unless the filesystem it known to be local, we therefore still poll */
		2611	/* also do poll on <2.6.25, but with normal frequency */
		2612	struct statfs sfs;
		2613
		2614	if (fs_2625 && !statfs (w->path, &sfs))
		2615	if (sfs.f_type == 0x1373 /* devfs */
		2616	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2617	|| sfs.f_type == 0x3153464a /* jfs */
		2618	|| sfs.f_type == 0x52654973 /* reiser3 */
		2619	|| sfs.f_type == 0x01021994 /* tempfs */
		2620	|| sfs.f_type == 0x58465342 /* xfs */)
		2621	return;
		2622
		2623	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2624	ev_timer_again (EV_A_ &w->timer);
		2625	}
2233	}	2626	}
2234		2627
2235	static void noinline	2628	static void noinline
2236	infy_del (EV_P_ ev_stat *w)	2629	infy_del (EV_P_ ev_stat *w)
2237	{	2630	{
…		…
2251		2644
2252	static void noinline	2645	static void noinline
2253	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2646	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2254	{	2647	{
2255	if (slot < 0)	2648	if (slot < 0)
2256	/* overflow, need to check for all hahs slots */	2649	/* overflow, need to check for all hash slots */
2257	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2650	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2258	infy_wd (EV_A_ slot, wd, ev);	2651	infy_wd (EV_A_ slot, wd, ev);
2259	else	2652	else
2260	{	2653	{
2261	WL w_;	2654	WL w_;
…		…
2267		2660
2268	if (w->wd == wd || wd == -1)	2661	if (w->wd == wd || wd == -1)
2269	{	2662	{
2270	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2663	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2271	{	2664	{
		2665	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2272	w->wd = -1;	2666	w->wd = -1;
2273	infy_add (EV_A_ w); /* re-add, no matter what */	2667	infy_add (EV_A_ w); /* re-add, no matter what */
2274	}	2668	}
2275		2669
2276	stat_timer_cb (EV_A_ &w->timer, 0);	2670	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2289		2683
2290	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2684	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2291	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2685	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2292	}	2686	}
2293		2687
2294	void inline_size	2688	inline_size void
		2689	check_2625 (EV_P)
		2690	{
		2691	/* kernels < 2.6.25 are borked
		2692	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2693	*/
		2694	struct utsname buf;
		2695	int major, minor, micro;
		2696
		2697	if (uname (&buf))
		2698	return;
		2699
		2700	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2701	return;
		2702
		2703	if (major < 2
		2704	|| (major == 2 && minor < 6)
		2705	|| (major == 2 && minor == 6 && micro < 25))
		2706	return;
		2707
		2708	fs_2625 = 1;
		2709	}
		2710
		2711	inline_size void
2295	infy_init (EV_P)	2712	infy_init (EV_P)
2296	{	2713	{
2297	if (fs_fd != -2)	2714	if (fs_fd != -2)
2298	return;	2715	return;
		2716
		2717	fs_fd = -1;
		2718
		2719	check_2625 (EV_A);
2299		2720
2300	fs_fd = inotify_init ();	2721	fs_fd = inotify_init ();
2301		2722
2302	if (fs_fd >= 0)	2723	if (fs_fd >= 0)
2303	{	2724	{
…		…
2305	ev_set_priority (&fs_w, EV_MAXPRI);	2726	ev_set_priority (&fs_w, EV_MAXPRI);
2306	ev_io_start (EV_A_ &fs_w);	2727	ev_io_start (EV_A_ &fs_w);
2307	}	2728	}
2308	}	2729	}
2309		2730
2310	void inline_size	2731	inline_size void
2311	infy_fork (EV_P)	2732	infy_fork (EV_P)
2312	{	2733	{
2313	int slot;	2734	int slot;
2314		2735
2315	if (fs_fd < 0)	2736	if (fs_fd < 0)
…		…
2331	w->wd = -1;	2752	w->wd = -1;
2332		2753
2333	if (fs_fd >= 0)	2754	if (fs_fd >= 0)
2334	infy_add (EV_A_ w); /* re-add, no matter what */	2755	infy_add (EV_A_ w); /* re-add, no matter what */
2335	else	2756	else
2336	ev_timer_start (EV_A_ &w->timer);	2757	ev_timer_again (EV_A_ &w->timer);
2337	}	2758	}
2338
2339	}	2759	}
2340	}	2760	}
2341		2761
		2762	#endif
		2763
		2764	#ifdef _WIN32
		2765	# define EV_LSTAT(p,b) _stati64 (p, b)
		2766	#else
		2767	# define EV_LSTAT(p,b) lstat (p, b)
2342	#endif	2768	#endif
2343		2769
2344	void	2770	void
2345	ev_stat_stat (EV_P_ ev_stat *w)	2771	ev_stat_stat (EV_P_ ev_stat *w)
2346	{	2772	{
…		…
2373	|| w->prev.st_atime != w->attr.st_atime	2799	|| w->prev.st_atime != w->attr.st_atime
2374	|| w->prev.st_mtime != w->attr.st_mtime	2800	|| w->prev.st_mtime != w->attr.st_mtime
2375	|| w->prev.st_ctime != w->attr.st_ctime	2801	|| w->prev.st_ctime != w->attr.st_ctime
2376	) {	2802	) {
2377	#if EV_USE_INOTIFY	2803	#if EV_USE_INOTIFY
		2804	if (fs_fd >= 0)
		2805	{
2378	infy_del (EV_A_ w);	2806	infy_del (EV_A_ w);
2379	infy_add (EV_A_ w);	2807	infy_add (EV_A_ w);
2380	ev_stat_stat (EV_A_ w); /* avoid race... */	2808	ev_stat_stat (EV_A_ w); /* avoid race... */
		2809	}
2381	#endif	2810	#endif
2382		2811
2383	ev_feed_event (EV_A_ w, EV_STAT);	2812	ev_feed_event (EV_A_ w, EV_STAT);
2384	}	2813	}
2385	}	2814	}
…		…
2388	ev_stat_start (EV_P_ ev_stat *w)	2817	ev_stat_start (EV_P_ ev_stat *w)
2389	{	2818	{
2390	if (expect_false (ev_is_active (w)))	2819	if (expect_false (ev_is_active (w)))
2391	return;	2820	return;
2392		2821
2393	/* since we use memcmp, we need to clear any padding data etc. */
2394	memset (&w->prev, 0, sizeof (ev_statdata));
2395	memset (&w->attr, 0, sizeof (ev_statdata));
2396
2397	ev_stat_stat (EV_A_ w);	2822	ev_stat_stat (EV_A_ w);
2398		2823
		2824	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2399	if (w->interval < MIN_STAT_INTERVAL)	2825	w->interval = MIN_STAT_INTERVAL;
2400	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2401		2826
2402	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2827	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2403	ev_set_priority (&w->timer, ev_priority (w));	2828	ev_set_priority (&w->timer, ev_priority (w));
2404		2829
2405	#if EV_USE_INOTIFY	2830	#if EV_USE_INOTIFY
2406	infy_init (EV_A);	2831	infy_init (EV_A);
2407		2832
2408	if (fs_fd >= 0)	2833	if (fs_fd >= 0)
2409	infy_add (EV_A_ w);	2834	infy_add (EV_A_ w);
2410	else	2835	else
2411	#endif	2836	#endif
2412	ev_timer_start (EV_A_ &w->timer);	2837	ev_timer_again (EV_A_ &w->timer);
2413		2838
2414	ev_start (EV_A_ (W)w, 1);	2839	ev_start (EV_A_ (W)w, 1);
		2840
		2841	EV_FREQUENT_CHECK;
2415	}	2842	}
2416		2843
2417	void	2844	void
2418	ev_stat_stop (EV_P_ ev_stat *w)	2845	ev_stat_stop (EV_P_ ev_stat *w)
2419	{	2846	{
2420	clear_pending (EV_A_ (W)w);	2847	clear_pending (EV_A_ (W)w);
2421	if (expect_false (!ev_is_active (w)))	2848	if (expect_false (!ev_is_active (w)))
2422	return;	2849	return;
2423		2850
		2851	EV_FREQUENT_CHECK;
		2852
2424	#if EV_USE_INOTIFY	2853	#if EV_USE_INOTIFY
2425	infy_del (EV_A_ w);	2854	infy_del (EV_A_ w);
2426	#endif	2855	#endif
2427	ev_timer_stop (EV_A_ &w->timer);	2856	ev_timer_stop (EV_A_ &w->timer);
2428		2857
2429	ev_stop (EV_A_ (W)w);	2858	ev_stop (EV_A_ (W)w);
		2859
		2860	EV_FREQUENT_CHECK;
2430	}	2861	}
2431	#endif	2862	#endif
2432		2863
2433	#if EV_IDLE_ENABLE	2864	#if EV_IDLE_ENABLE
2434	void	2865	void
…		…
2436	{	2867	{
2437	if (expect_false (ev_is_active (w)))	2868	if (expect_false (ev_is_active (w)))
2438	return;	2869	return;
2439		2870
2440	pri_adjust (EV_A_ (W)w);	2871	pri_adjust (EV_A_ (W)w);
		2872
		2873	EV_FREQUENT_CHECK;
2441		2874
2442	{	2875	{
2443	int active = ++idlecnt [ABSPRI (w)];	2876	int active = ++idlecnt [ABSPRI (w)];
2444		2877
2445	++idleall;	2878	++idleall;
2446	ev_start (EV_A_ (W)w, active);	2879	ev_start (EV_A_ (W)w, active);
2447		2880
2448	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	2881	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2449	idles [ABSPRI (w)][active - 1] = w;	2882	idles [ABSPRI (w)][active - 1] = w;
2450	}	2883	}
		2884
		2885	EV_FREQUENT_CHECK;
2451	}	2886	}
2452		2887
2453	void	2888	void
2454	ev_idle_stop (EV_P_ ev_idle *w)	2889	ev_idle_stop (EV_P_ ev_idle *w)
2455	{	2890	{
2456	clear_pending (EV_A_ (W)w);	2891	clear_pending (EV_A_ (W)w);
2457	if (expect_false (!ev_is_active (w)))	2892	if (expect_false (!ev_is_active (w)))
2458	return;	2893	return;
2459		2894
		2895	EV_FREQUENT_CHECK;
		2896
2460	{	2897	{
2461	int active = ev_active (w);	2898	int active = ev_active (w);
2462		2899
2463	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	2900	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2464	ev_active (idles [ABSPRI (w)][active - 1]) = active;	2901	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2465		2902
2466	ev_stop (EV_A_ (W)w);	2903	ev_stop (EV_A_ (W)w);
2467	--idleall;	2904	--idleall;
2468	}	2905	}
		2906
		2907	EV_FREQUENT_CHECK;
2469	}	2908	}
2470	#endif	2909	#endif
2471		2910
2472	void	2911	void
2473	ev_prepare_start (EV_P_ ev_prepare *w)	2912	ev_prepare_start (EV_P_ ev_prepare *w)
2474	{	2913	{
2475	if (expect_false (ev_is_active (w)))	2914	if (expect_false (ev_is_active (w)))
2476	return;	2915	return;
		2916
		2917	EV_FREQUENT_CHECK;
2477		2918
2478	ev_start (EV_A_ (W)w, ++preparecnt);	2919	ev_start (EV_A_ (W)w, ++preparecnt);
2479	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	2920	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2480	prepares [preparecnt - 1] = w;	2921	prepares [preparecnt - 1] = w;
		2922
		2923	EV_FREQUENT_CHECK;
2481	}	2924	}
2482		2925
2483	void	2926	void
2484	ev_prepare_stop (EV_P_ ev_prepare *w)	2927	ev_prepare_stop (EV_P_ ev_prepare *w)
2485	{	2928	{
2486	clear_pending (EV_A_ (W)w);	2929	clear_pending (EV_A_ (W)w);
2487	if (expect_false (!ev_is_active (w)))	2930	if (expect_false (!ev_is_active (w)))
2488	return;	2931	return;
2489		2932
		2933	EV_FREQUENT_CHECK;
		2934
2490	{	2935	{
2491	int active = ev_active (w);	2936	int active = ev_active (w);
2492		2937
2493	prepares [active - 1] = prepares [--preparecnt];	2938	prepares [active - 1] = prepares [--preparecnt];
2494	ev_active (prepares [active - 1]) = active;	2939	ev_active (prepares [active - 1]) = active;
2495	}	2940	}
2496		2941
2497	ev_stop (EV_A_ (W)w);	2942	ev_stop (EV_A_ (W)w);
		2943
		2944	EV_FREQUENT_CHECK;
2498	}	2945	}
2499		2946
2500	void	2947	void
2501	ev_check_start (EV_P_ ev_check *w)	2948	ev_check_start (EV_P_ ev_check *w)
2502	{	2949	{
2503	if (expect_false (ev_is_active (w)))	2950	if (expect_false (ev_is_active (w)))
2504	return;	2951	return;
		2952
		2953	EV_FREQUENT_CHECK;
2505		2954
2506	ev_start (EV_A_ (W)w, ++checkcnt);	2955	ev_start (EV_A_ (W)w, ++checkcnt);
2507	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	2956	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2508	checks [checkcnt - 1] = w;	2957	checks [checkcnt - 1] = w;
		2958
		2959	EV_FREQUENT_CHECK;
2509	}	2960	}
2510		2961
2511	void	2962	void
2512	ev_check_stop (EV_P_ ev_check *w)	2963	ev_check_stop (EV_P_ ev_check *w)
2513	{	2964	{
2514	clear_pending (EV_A_ (W)w);	2965	clear_pending (EV_A_ (W)w);
2515	if (expect_false (!ev_is_active (w)))	2966	if (expect_false (!ev_is_active (w)))
2516	return;	2967	return;
2517		2968
		2969	EV_FREQUENT_CHECK;
		2970
2518	{	2971	{
2519	int active = ev_active (w);	2972	int active = ev_active (w);
2520		2973
2521	checks [active - 1] = checks [--checkcnt];	2974	checks [active - 1] = checks [--checkcnt];
2522	ev_active (checks [active - 1]) = active;	2975	ev_active (checks [active - 1]) = active;
2523	}	2976	}
2524		2977
2525	ev_stop (EV_A_ (W)w);	2978	ev_stop (EV_A_ (W)w);
		2979
		2980	EV_FREQUENT_CHECK;
2526	}	2981	}
2527		2982
2528	#if EV_EMBED_ENABLE	2983	#if EV_EMBED_ENABLE
2529	void noinline	2984	void noinline
2530	ev_embed_sweep (EV_P_ ev_embed *w)	2985	ev_embed_sweep (EV_P_ ev_embed *w)
…		…
2557	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3012	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2558	}	3013	}
2559	}	3014	}
2560	}	3015	}
2561		3016
		3017	static void
		3018	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3019	{
		3020	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3021
		3022	ev_embed_stop (EV_A_ w);
		3023
		3024	{
		3025	struct ev_loop *loop = w->other;
		3026
		3027	ev_loop_fork (EV_A);
		3028	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3029	}
		3030
		3031	ev_embed_start (EV_A_ w);
		3032	}
		3033
2562	#if 0	3034	#if 0
2563	static void	3035	static void
2564	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3036	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2565	{	3037	{
2566	ev_idle_stop (EV_A_ idle);	3038	ev_idle_stop (EV_A_ idle);
…		…
2573	if (expect_false (ev_is_active (w)))	3045	if (expect_false (ev_is_active (w)))
2574	return;	3046	return;
2575		3047
2576	{	3048	{
2577	struct ev_loop *loop = w->other;	3049	struct ev_loop *loop = w->other;
2578	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3050	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2579	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3051	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2580	}	3052	}
		3053
		3054	EV_FREQUENT_CHECK;
2581		3055
2582	ev_set_priority (&w->io, ev_priority (w));	3056	ev_set_priority (&w->io, ev_priority (w));
2583	ev_io_start (EV_A_ &w->io);	3057	ev_io_start (EV_A_ &w->io);
2584		3058
2585	ev_prepare_init (&w->prepare, embed_prepare_cb);	3059	ev_prepare_init (&w->prepare, embed_prepare_cb);
2586	ev_set_priority (&w->prepare, EV_MINPRI);	3060	ev_set_priority (&w->prepare, EV_MINPRI);
2587	ev_prepare_start (EV_A_ &w->prepare);	3061	ev_prepare_start (EV_A_ &w->prepare);
2588		3062
		3063	ev_fork_init (&w->fork, embed_fork_cb);
		3064	ev_fork_start (EV_A_ &w->fork);
		3065
2589	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3066	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2590		3067
2591	ev_start (EV_A_ (W)w, 1);	3068	ev_start (EV_A_ (W)w, 1);
		3069
		3070	EV_FREQUENT_CHECK;
2592	}	3071	}
2593		3072
2594	void	3073	void
2595	ev_embed_stop (EV_P_ ev_embed *w)	3074	ev_embed_stop (EV_P_ ev_embed *w)
2596	{	3075	{
2597	clear_pending (EV_A_ (W)w);	3076	clear_pending (EV_A_ (W)w);
2598	if (expect_false (!ev_is_active (w)))	3077	if (expect_false (!ev_is_active (w)))
2599	return;	3078	return;
2600		3079
		3080	EV_FREQUENT_CHECK;
		3081
2601	ev_io_stop (EV_A_ &w->io);	3082	ev_io_stop (EV_A_ &w->io);
2602	ev_prepare_stop (EV_A_ &w->prepare);	3083	ev_prepare_stop (EV_A_ &w->prepare);
		3084	ev_fork_stop (EV_A_ &w->fork);
2603		3085
2604	ev_stop (EV_A_ (W)w);	3086	EV_FREQUENT_CHECK;
2605	}	3087	}
2606	#endif	3088	#endif
2607		3089
2608	#if EV_FORK_ENABLE	3090	#if EV_FORK_ENABLE
2609	void	3091	void
2610	ev_fork_start (EV_P_ ev_fork *w)	3092	ev_fork_start (EV_P_ ev_fork *w)
2611	{	3093	{
2612	if (expect_false (ev_is_active (w)))	3094	if (expect_false (ev_is_active (w)))
2613	return;	3095	return;
		3096
		3097	EV_FREQUENT_CHECK;
2614		3098
2615	ev_start (EV_A_ (W)w, ++forkcnt);	3099	ev_start (EV_A_ (W)w, ++forkcnt);
2616	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3100	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2617	forks [forkcnt - 1] = w;	3101	forks [forkcnt - 1] = w;
		3102
		3103	EV_FREQUENT_CHECK;
2618	}	3104	}
2619		3105
2620	void	3106	void
2621	ev_fork_stop (EV_P_ ev_fork *w)	3107	ev_fork_stop (EV_P_ ev_fork *w)
2622	{	3108	{
2623	clear_pending (EV_A_ (W)w);	3109	clear_pending (EV_A_ (W)w);
2624	if (expect_false (!ev_is_active (w)))	3110	if (expect_false (!ev_is_active (w)))
2625	return;	3111	return;
2626		3112
		3113	EV_FREQUENT_CHECK;
		3114
2627	{	3115	{
2628	int active = ev_active (w);	3116	int active = ev_active (w);
2629		3117
2630	forks [active - 1] = forks [--forkcnt];	3118	forks [active - 1] = forks [--forkcnt];
2631	ev_active (forks [active - 1]) = active;	3119	ev_active (forks [active - 1]) = active;
2632	}	3120	}
2633		3121
2634	ev_stop (EV_A_ (W)w);	3122	ev_stop (EV_A_ (W)w);
		3123
		3124	EV_FREQUENT_CHECK;
2635	}	3125	}
2636	#endif	3126	#endif
2637		3127
2638	#if EV_ASYNC_ENABLE	3128	#if EV_ASYNC_ENABLE
2639	void	3129	void
…		…
2641	{	3131	{
2642	if (expect_false (ev_is_active (w)))	3132	if (expect_false (ev_is_active (w)))
2643	return;	3133	return;
2644		3134
2645	evpipe_init (EV_A);	3135	evpipe_init (EV_A);
		3136
		3137	EV_FREQUENT_CHECK;
2646		3138
2647	ev_start (EV_A_ (W)w, ++asynccnt);	3139	ev_start (EV_A_ (W)w, ++asynccnt);
2648	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);	3140	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2649	asyncs [asynccnt - 1] = w;	3141	asyncs [asynccnt - 1] = w;
		3142
		3143	EV_FREQUENT_CHECK;
2650	}	3144	}
2651		3145
2652	void	3146	void
2653	ev_async_stop (EV_P_ ev_async *w)	3147	ev_async_stop (EV_P_ ev_async *w)
2654	{	3148	{
2655	clear_pending (EV_A_ (W)w);	3149	clear_pending (EV_A_ (W)w);
2656	if (expect_false (!ev_is_active (w)))	3150	if (expect_false (!ev_is_active (w)))
2657	return;	3151	return;
2658		3152
		3153	EV_FREQUENT_CHECK;
		3154
2659	{	3155	{
2660	int active = ev_active (w);	3156	int active = ev_active (w);
2661		3157
2662	asyncs [active - 1] = asyncs [--asynccnt];	3158	asyncs [active - 1] = asyncs [--asynccnt];
2663	ev_active (asyncs [active - 1]) = active;	3159	ev_active (asyncs [active - 1]) = active;
2664	}	3160	}
2665		3161
2666	ev_stop (EV_A_ (W)w);	3162	ev_stop (EV_A_ (W)w);
		3163
		3164	EV_FREQUENT_CHECK;
2667	}	3165	}
2668		3166
2669	void	3167	void
2670	ev_async_send (EV_P_ ev_async *w)	3168	ev_async_send (EV_P_ ev_async *w)
2671	{	3169	{
…		…
2688	once_cb (EV_P_ struct ev_once *once, int revents)	3186	once_cb (EV_P_ struct ev_once *once, int revents)
2689	{	3187	{
2690	void (*cb)(int revents, void *arg) = once->cb;	3188	void (*cb)(int revents, void *arg) = once->cb;
2691	void *arg = once->arg;	3189	void *arg = once->arg;
2692		3190
2693	ev_io_stop (EV_A_ &once->io);	3191	ev_io_stop (EV_A_ &once->io);
2694	ev_timer_stop (EV_A_ &once->to);	3192	ev_timer_stop (EV_A_ &once->to);
2695	ev_free (once);	3193	ev_free (once);
2696		3194
2697	cb (revents, arg);	3195	cb (revents, arg);
2698	}	3196	}
2699		3197
2700	static void	3198	static void
2701	once_cb_io (EV_P_ ev_io *w, int revents)	3199	once_cb_io (EV_P_ ev_io *w, int revents)
2702	{	3200	{
2703	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3201	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3202
		3203	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2704	}	3204	}
2705		3205
2706	static void	3206	static void
2707	once_cb_to (EV_P_ ev_timer *w, int revents)	3207	once_cb_to (EV_P_ ev_timer *w, int revents)
2708	{	3208	{
2709	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3209	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3210
		3211	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2710	}	3212	}
2711		3213
2712	void	3214	void
2713	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3215	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2714	{	3216	{
…		…
2736	ev_timer_set (&once->to, timeout, 0.);	3238	ev_timer_set (&once->to, timeout, 0.);
2737	ev_timer_start (EV_A_ &once->to);	3239	ev_timer_start (EV_A_ &once->to);
2738	}	3240	}
2739	}	3241	}
2740		3242
		3243	/*****************************************************************************/
		3244
		3245	#if EV_WALK_ENABLE
		3246	void
		3247	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3248	{
		3249	int i, j;
		3250	ev_watcher_list *wl, *wn;
		3251
		3252	if (types & (EV_IO | EV_EMBED))
		3253	for (i = 0; i < anfdmax; ++i)
		3254	for (wl = anfds [i].head; wl; )
		3255	{
		3256	wn = wl->next;
		3257
		3258	#if EV_EMBED_ENABLE
		3259	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3260	{
		3261	if (types & EV_EMBED)
		3262	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3263	}
		3264	else
		3265	#endif
		3266	#if EV_USE_INOTIFY
		3267	if (ev_cb ((ev_io *)wl) == infy_cb)
		3268	;
		3269	else
		3270	#endif
		3271	if ((ev_io *)wl != &pipe_w)
		3272	if (types & EV_IO)
		3273	cb (EV_A_ EV_IO, wl);
		3274
		3275	wl = wn;
		3276	}
		3277
		3278	if (types & (EV_TIMER | EV_STAT))
		3279	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3280	#if EV_STAT_ENABLE
		3281	/*TODO: timer is not always active*/
		3282	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3283	{
		3284	if (types & EV_STAT)
		3285	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3286	}
		3287	else
		3288	#endif
		3289	if (types & EV_TIMER)
		3290	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3291
		3292	#if EV_PERIODIC_ENABLE
		3293	if (types & EV_PERIODIC)
		3294	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3295	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3296	#endif
		3297
		3298	#if EV_IDLE_ENABLE
		3299	if (types & EV_IDLE)
		3300	for (j = NUMPRI; i--; )
		3301	for (i = idlecnt [j]; i--; )
		3302	cb (EV_A_ EV_IDLE, idles [j][i]);
		3303	#endif
		3304
		3305	#if EV_FORK_ENABLE
		3306	if (types & EV_FORK)
		3307	for (i = forkcnt; i--; )
		3308	if (ev_cb (forks [i]) != embed_fork_cb)
		3309	cb (EV_A_ EV_FORK, forks [i]);
		3310	#endif
		3311
		3312	#if EV_ASYNC_ENABLE
		3313	if (types & EV_ASYNC)
		3314	for (i = asynccnt; i--; )
		3315	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3316	#endif
		3317
		3318	if (types & EV_PREPARE)
		3319	for (i = preparecnt; i--; )
		3320	#if EV_EMBED_ENABLE
		3321	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3322	#endif
		3323	cb (EV_A_ EV_PREPARE, prepares [i]);
		3324
		3325	if (types & EV_CHECK)
		3326	for (i = checkcnt; i--; )
		3327	cb (EV_A_ EV_CHECK, checks [i]);
		3328
		3329	if (types & EV_SIGNAL)
		3330	for (i = 0; i < signalmax; ++i)
		3331	for (wl = signals [i].head; wl; )
		3332	{
		3333	wn = wl->next;
		3334	cb (EV_A_ EV_SIGNAL, wl);
		3335	wl = wn;
		3336	}
		3337
		3338	if (types & EV_CHILD)
		3339	for (i = EV_PID_HASHSIZE; i--; )
		3340	for (wl = childs [i]; wl; )
		3341	{
		3342	wn = wl->next;
		3343	cb (EV_A_ EV_CHILD, wl);
		3344	wl = wn;
		3345	}
		3346	/* EV_STAT 0x00001000 /* stat data changed */
		3347	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3348	}
		3349	#endif
		3350
2741	#if EV_MULTIPLICITY	3351	#if EV_MULTIPLICITY
2742	#include "ev_wrap.h"	3352	#include "ev_wrap.h"
2743	#endif	3353	#endif
2744		3354
2745	#ifdef __cplusplus	3355	#ifdef __cplusplus

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