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Comparing libev/ev.c (file contents):
Revision 1.242 by root, Fri May 9 14:07:19 2008 UTC vs.
Revision 1.294 by root, Wed Jul 8 02:46:05 2009 UTC

1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without modifica-	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* tion, are permitted provided that the following conditions are met:	8	* tion, are permitted provided that the following conditions are met:
9	*	9	*
…		…
47	# include EV_CONFIG_H	47	# include EV_CONFIG_H
48	# else	48	# else
49	# include "config.h"	49	# include "config.h"
50	# endif	50	# endif
51		51
		52	# if HAVE_CLOCK_SYSCALL
		53	# ifndef EV_USE_CLOCK_SYSCALL
		54	# define EV_USE_CLOCK_SYSCALL 1
		55	# ifndef EV_USE_REALTIME
		56	# define EV_USE_REALTIME 0
		57	# endif
		58	# ifndef EV_USE_MONOTONIC
		59	# define EV_USE_MONOTONIC 1
		60	# endif
		61	# endif
		62	# elif !defined(EV_USE_CLOCK_SYSCALL)
		63	# define EV_USE_CLOCK_SYSCALL 0
		64	# endif
		65
52	# if HAVE_CLOCK_GETTIME	66	# if HAVE_CLOCK_GETTIME
53	# ifndef EV_USE_MONOTONIC	67	# ifndef EV_USE_MONOTONIC
54	# define EV_USE_MONOTONIC 1	68	# define EV_USE_MONOTONIC 1
55	# endif	69	# endif
56	# ifndef EV_USE_REALTIME	70	# ifndef EV_USE_REALTIME
57	# define EV_USE_REALTIME 1	71	# define EV_USE_REALTIME 0
58	# endif	72	# endif
59	# else	73	# else
60	# ifndef EV_USE_MONOTONIC	74	# ifndef EV_USE_MONOTONIC
61	# define EV_USE_MONOTONIC 0	75	# define EV_USE_MONOTONIC 0
62	# endif	76	# endif
…		…
126	# define EV_USE_EVENTFD 1	140	# define EV_USE_EVENTFD 1
127	# else	141	# else
128	# define EV_USE_EVENTFD 0	142	# define EV_USE_EVENTFD 0
129	# endif	143	# endif
130	# endif	144	# endif
131		145
132	#endif	146	#endif
133		147
134	#include <math.h>	148	#include <math.h>
135	#include <stdlib.h>	149	#include <stdlib.h>
136	#include <fcntl.h>	150	#include <fcntl.h>
…		…
154	#ifndef _WIN32	168	#ifndef _WIN32
155	# include <sys/time.h>	169	# include <sys/time.h>
156	# include <sys/wait.h>	170	# include <sys/wait.h>
157	# include <unistd.h>	171	# include <unistd.h>
158	#else	172	#else
		173	# include <io.h>
159	# define WIN32_LEAN_AND_MEAN	174	# define WIN32_LEAN_AND_MEAN
160	# include <windows.h>	175	# include <windows.h>
161	# ifndef EV_SELECT_IS_WINSOCKET	176	# ifndef EV_SELECT_IS_WINSOCKET
162	# define EV_SELECT_IS_WINSOCKET 1	177	# define EV_SELECT_IS_WINSOCKET 1
163	# endif	178	# endif
164	#endif	179	#endif
165		180
166	/* this block tries to deduce configuration from header-defined symbols and defaults */	181	/* this block tries to deduce configuration from header-defined symbols and defaults */
167		182
		183	#ifndef EV_USE_CLOCK_SYSCALL
		184	# if __linux && __GLIBC__ >= 2
		185	# define EV_USE_CLOCK_SYSCALL 1
		186	# else
		187	# define EV_USE_CLOCK_SYSCALL 0
		188	# endif
		189	#endif
		190
168	#ifndef EV_USE_MONOTONIC	191	#ifndef EV_USE_MONOTONIC
		192	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
		193	# define EV_USE_MONOTONIC 1
		194	# else
169	# define EV_USE_MONOTONIC 0	195	# define EV_USE_MONOTONIC 0
		196	# endif
170	#endif	197	#endif
171		198
172	#ifndef EV_USE_REALTIME	199	#ifndef EV_USE_REALTIME
173	# define EV_USE_REALTIME 0	200	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174	#endif	201	#endif
175		202
176	#ifndef EV_USE_NANOSLEEP	203	#ifndef EV_USE_NANOSLEEP
		204	# if _POSIX_C_SOURCE >= 199309L
		205	# define EV_USE_NANOSLEEP 1
		206	# else
177	# define EV_USE_NANOSLEEP 0	207	# define EV_USE_NANOSLEEP 0
		208	# endif
178	#endif	209	#endif
179		210
180	#ifndef EV_USE_SELECT	211	#ifndef EV_USE_SELECT
181	# define EV_USE_SELECT 1	212	# define EV_USE_SELECT 1
182	#endif	213	#endif
…		…
235	# else	266	# else
236	# define EV_USE_EVENTFD 0	267	# define EV_USE_EVENTFD 0
237	# endif	268	# endif
238	#endif	269	#endif
239		270
		271	#if 0 /* debugging */
		272	# define EV_VERIFY 3
		273	# define EV_USE_4HEAP 1
		274	# define EV_HEAP_CACHE_AT 1
		275	#endif
		276
		277	#ifndef EV_VERIFY
		278	# define EV_VERIFY !EV_MINIMAL
		279	#endif
		280
		281	#ifndef EV_USE_4HEAP
		282	# define EV_USE_4HEAP !EV_MINIMAL
		283	#endif
		284
		285	#ifndef EV_HEAP_CACHE_AT
		286	# define EV_HEAP_CACHE_AT !EV_MINIMAL
		287	#endif
		288
		289	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		290	/* which makes programs even slower. might work on other unices, too. */
		291	#if EV_USE_CLOCK_SYSCALL
		292	# include <syscall.h>
		293	# ifdef SYS_clock_gettime
		294	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		295	# undef EV_USE_MONOTONIC
		296	# define EV_USE_MONOTONIC 1
		297	# else
		298	# undef EV_USE_CLOCK_SYSCALL
		299	# define EV_USE_CLOCK_SYSCALL 0
		300	# endif
		301	#endif
		302
240	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	303	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
241		304
242	#ifndef CLOCK_MONOTONIC	305	#ifndef CLOCK_MONOTONIC
243	# undef EV_USE_MONOTONIC	306	# undef EV_USE_MONOTONIC
244	# define EV_USE_MONOTONIC 0	307	# define EV_USE_MONOTONIC 0
…		…
259	# include <sys/select.h>	322	# include <sys/select.h>
260	# endif	323	# endif
261	#endif	324	#endif
262		325
263	#if EV_USE_INOTIFY	326	#if EV_USE_INOTIFY
		327	# include <sys/utsname.h>
		328	# include <sys/statfs.h>
264	# include <sys/inotify.h>	329	# include <sys/inotify.h>
		330	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
		331	# ifndef IN_DONT_FOLLOW
		332	# undef EV_USE_INOTIFY
		333	# define EV_USE_INOTIFY 0
		334	# endif
265	#endif	335	#endif
266		336
267	#if EV_SELECT_IS_WINSOCKET	337	#if EV_SELECT_IS_WINSOCKET
268	# include <winsock.h>	338	# include <winsock.h>
269	#endif	339	#endif
…		…
279	}	349	}
280	# endif	350	# endif
281	#endif	351	#endif
282		352
283	/**/	353	/**/
		354
		355	#if EV_VERIFY >= 3
		356	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
		357	#else
		358	# define EV_FREQUENT_CHECK do { } while (0)
		359	#endif
284		360
285	/*	361	/*
286	* This is used to avoid floating point rounding problems.	362	* This is used to avoid floating point rounding problems.
287	* It is added to ev_rt_now when scheduling periodics	363	* It is added to ev_rt_now when scheduling periodics
288	* to ensure progress, time-wise, even when rounding	364	* to ensure progress, time-wise, even when rounding
…		…
328	typedef ev_watcher_time *WT;	404	typedef ev_watcher_time *WT;
329		405
330	#define ev_active(w) ((W)(w))->active	406	#define ev_active(w) ((W)(w))->active
331	#define ev_at(w) ((WT)(w))->at	407	#define ev_at(w) ((WT)(w))->at
332		408
333	#if EV_USE_MONOTONIC	409	#if EV_USE_REALTIME
334	/* sig_atomic_t is used to avoid per-thread variables or locking but still */	410	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
335	/* giving it a reasonably high chance of working on typical architetcures */	411	/* giving it a reasonably high chance of working on typical architetcures */
		412	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		413	#endif
		414
		415	#if EV_USE_MONOTONIC
336	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	416	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
337	#endif	417	#endif
338		418
339	#ifdef _WIN32	419	#ifdef _WIN32
340	# include "ev_win32.c"	420	# include "ev_win32.c"
…		…
349	{	429	{
350	syserr_cb = cb;	430	syserr_cb = cb;
351	}	431	}
352		432
353	static void noinline	433	static void noinline
354	syserr (const char *msg)	434	ev_syserr (const char *msg)
355	{	435	{
356	if (!msg)	436	if (!msg)
357	msg = "(libev) system error";	437	msg = "(libev) system error";
358		438
359	if (syserr_cb)	439	if (syserr_cb)
…		…
405	#define ev_malloc(size) ev_realloc (0, (size))	485	#define ev_malloc(size) ev_realloc (0, (size))
406	#define ev_free(ptr) ev_realloc ((ptr), 0)	486	#define ev_free(ptr) ev_realloc ((ptr), 0)
407		487
408	/*****************************************************************************/	488	/*****************************************************************************/
409		489
		490	/* file descriptor info structure */
410	typedef struct	491	typedef struct
411	{	492	{
412	WL head;	493	WL head;
413	unsigned char events;	494	unsigned char events; /* the events watched for */
		495	unsigned char reify; /* flag set when this ANFD needs reification */
		496	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
414	unsigned char reify;	497	unsigned char unused;
		498	#if EV_USE_EPOLL
		499	unsigned int egen; /* generation counter to counter epoll bugs */
		500	#endif
415	#if EV_SELECT_IS_WINSOCKET	501	#if EV_SELECT_IS_WINSOCKET
416	SOCKET handle;	502	SOCKET handle;
417	#endif	503	#endif
418	} ANFD;	504	} ANFD;
419		505
		506	/* stores the pending event set for a given watcher */
420	typedef struct	507	typedef struct
421	{	508	{
422	W w;	509	W w;
423	int events;	510	int events; /* the pending event set for the given watcher */
424	} ANPENDING;	511	} ANPENDING;
425		512
426	#if EV_USE_INOTIFY	513	#if EV_USE_INOTIFY
427	/* hash table entry per inotify-id */	514	/* hash table entry per inotify-id */
428	typedef struct	515	typedef struct
…		…
430	WL head;	517	WL head;
431	} ANFS;	518	} ANFS;
432	#endif	519	#endif
433		520
434	/* Heap Entry */	521	/* Heap Entry */
435	#define EV_HEAP_CACHE_AT 0
436	#if EV_HEAP_CACHE_AT	522	#if EV_HEAP_CACHE_AT
		523	/* a heap element */
437	typedef struct {	524	typedef struct {
		525	ev_tstamp at;
438	WT w;	526	WT w;
439	ev_tstamp at;
440	} ANHE;	527	} ANHE;
441		528
442	#define ANHE_w(he) (he).w /* access watcher, read-write */	529	#define ANHE_w(he) (he).w /* access watcher, read-write */
443	#define ANHE_at(he) (he).at /* access cached at, read-only */	530	#define ANHE_at(he) (he).at /* access cached at, read-only */
444	#define ANHE_at_set(he) (he).at = (he).w->at /* update at from watcher */	531	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
445	#else	532	#else
		533	/* a heap element */
446	typedef WT ANHE;	534	typedef WT ANHE;
447		535
448	#define ANHE_w(he) (he)	536	#define ANHE_w(he) (he)
449	#define ANHE_at(he) (he)->at	537	#define ANHE_at(he) (he)->at
450	#define ANHE_at_set(he)	538	#define ANHE_at_cache(he)
451	#endif	539	#endif
452		540
453	#if EV_MULTIPLICITY	541	#if EV_MULTIPLICITY
454		542
455	struct ev_loop	543	struct ev_loop
…		…
476		564
477	#endif	565	#endif
478		566
479	/*****************************************************************************/	567	/*****************************************************************************/
480		568
		569	#ifndef EV_HAVE_EV_TIME
481	ev_tstamp	570	ev_tstamp
482	ev_time (void)	571	ev_time (void)
483	{	572	{
484	#if EV_USE_REALTIME	573	#if EV_USE_REALTIME
		574	if (expect_true (have_realtime))
		575	{
485	struct timespec ts;	576	struct timespec ts;
486	clock_gettime (CLOCK_REALTIME, &ts);	577	clock_gettime (CLOCK_REALTIME, &ts);
487	return ts.tv_sec + ts.tv_nsec * 1e-9;	578	return ts.tv_sec + ts.tv_nsec * 1e-9;
488	#else	579	}
		580	#endif
		581
489	struct timeval tv;	582	struct timeval tv;
490	gettimeofday (&tv, 0);	583	gettimeofday (&tv, 0);
491	return tv.tv_sec + tv.tv_usec * 1e-6;	584	return tv.tv_sec + tv.tv_usec * 1e-6;
492	#endif
493	}	585	}
		586	#endif
494		587
495	ev_tstamp inline_size	588	inline_size ev_tstamp
496	get_clock (void)	589	get_clock (void)
497	{	590	{
498	#if EV_USE_MONOTONIC	591	#if EV_USE_MONOTONIC
499	if (expect_true (have_monotonic))	592	if (expect_true (have_monotonic))
500	{	593	{
…		…
533	struct timeval tv;	626	struct timeval tv;
534		627
535	tv.tv_sec = (time_t)delay;	628	tv.tv_sec = (time_t)delay;
536	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	629	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
537		630
		631	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		632	/* somehting not guaranteed by newer posix versions, but guaranteed */
		633	/* by older ones */
538	select (0, 0, 0, 0, &tv);	634	select (0, 0, 0, 0, &tv);
539	#endif	635	#endif
540	}	636	}
541	}	637	}
542		638
543	/*****************************************************************************/	639	/*****************************************************************************/
544		640
545	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	641	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
546		642
547	int inline_size	643	/* find a suitable new size for the given array, */
		644	/* hopefully by rounding to a ncie-to-malloc size */
		645	inline_size int
548	array_nextsize (int elem, int cur, int cnt)	646	array_nextsize (int elem, int cur, int cnt)
549	{	647	{
550	int ncur = cur + 1;	648	int ncur = cur + 1;
551		649
552	do	650	do
…		…
569	array_realloc (int elem, void *base, int *cur, int cnt)	667	array_realloc (int elem, void *base, int *cur, int cnt)
570	{	668	{
571	*cur = array_nextsize (elem, *cur, cnt);	669	*cur = array_nextsize (elem, *cur, cnt);
572	return ev_realloc (base, elem * *cur);	670	return ev_realloc (base, elem * *cur);
573	}	671	}
		672
		673	#define array_init_zero(base,count) \
		674	memset ((void *)(base), 0, sizeof (*(base)) * (count))
574		675
575	#define array_needsize(type,base,cur,cnt,init) \	676	#define array_needsize(type,base,cur,cnt,init) \
576	if (expect_false ((cnt) > (cur))) \	677	if (expect_false ((cnt) > (cur))) \
577	{ \	678	{ \
578	int ocur_ = (cur); \	679	int ocur_ = (cur); \
…		…
590	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	691	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
591	}	692	}
592	#endif	693	#endif
593		694
594	#define array_free(stem, idx) \	695	#define array_free(stem, idx) \
595	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	696	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
596		697
597	/*****************************************************************************/	698	/*****************************************************************************/
		699
		700	/* dummy callback for pending events */
		701	static void noinline
		702	pendingcb (EV_P_ ev_prepare *w, int revents)
		703	{
		704	}
598		705
599	void noinline	706	void noinline
600	ev_feed_event (EV_P_ void *w, int revents)	707	ev_feed_event (EV_P_ void *w, int revents)
601	{	708	{
602	W w_ = (W)w;	709	W w_ = (W)w;
…		…
611	pendings [pri][w_->pending - 1].w = w_;	718	pendings [pri][w_->pending - 1].w = w_;
612	pendings [pri][w_->pending - 1].events = revents;	719	pendings [pri][w_->pending - 1].events = revents;
613	}	720	}
614	}	721	}
615		722
616	void inline_speed	723	inline_speed void
		724	feed_reverse (EV_P_ W w)
		725	{
		726	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		727	rfeeds [rfeedcnt++] = w;
		728	}
		729
		730	inline_size void
		731	feed_reverse_done (EV_P_ int revents)
		732	{
		733	do
		734	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		735	while (rfeedcnt);
		736	}
		737
		738	inline_speed void
617	queue_events (EV_P_ W *events, int eventcnt, int type)	739	queue_events (EV_P_ W *events, int eventcnt, int type)
618	{	740	{
619	int i;	741	int i;
620		742
621	for (i = 0; i < eventcnt; ++i)	743	for (i = 0; i < eventcnt; ++i)
622	ev_feed_event (EV_A_ events [i], type);	744	ev_feed_event (EV_A_ events [i], type);
623	}	745	}
624		746
625	/*****************************************************************************/	747	/*****************************************************************************/
626		748
627	void inline_size	749	inline_speed void
628	anfds_init (ANFD *base, int count)
629	{
630	while (count--)
631	{
632	base->head = 0;
633	base->events = EV_NONE;
634	base->reify = 0;
635
636	++base;
637	}
638	}
639
640	void inline_speed
641	fd_event (EV_P_ int fd, int revents)	750	fd_event (EV_P_ int fd, int revents)
642	{	751	{
643	ANFD *anfd = anfds + fd;	752	ANFD *anfd = anfds + fd;
644	ev_io *w;	753	ev_io *w;
645		754
…		…
657	{	766	{
658	if (fd >= 0 && fd < anfdmax)	767	if (fd >= 0 && fd < anfdmax)
659	fd_event (EV_A_ fd, revents);	768	fd_event (EV_A_ fd, revents);
660	}	769	}
661		770
662	void inline_size	771	/* make sure the external fd watch events are in-sync */
		772	/* with the kernel/libev internal state */
		773	inline_size void
663	fd_reify (EV_P)	774	fd_reify (EV_P)
664	{	775	{
665	int i;	776	int i;
666		777
667	for (i = 0; i < fdchangecnt; ++i)	778	for (i = 0; i < fdchangecnt; ++i)
…		…
676	events |= (unsigned char)w->events;	787	events |= (unsigned char)w->events;
677		788
678	#if EV_SELECT_IS_WINSOCKET	789	#if EV_SELECT_IS_WINSOCKET
679	if (events)	790	if (events)
680	{	791	{
681	unsigned long argp;	792	unsigned long arg;
682	#ifdef EV_FD_TO_WIN32_HANDLE	793	#ifdef EV_FD_TO_WIN32_HANDLE
683	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	794	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
684	#else	795	#else
685	anfd->handle = _get_osfhandle (fd);	796	anfd->handle = _get_osfhandle (fd);
686	#endif	797	#endif
687	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	798	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
688	}	799	}
689	#endif	800	#endif
690		801
691	{	802	{
692	unsigned char o_events = anfd->events;	803	unsigned char o_events = anfd->events;
693	unsigned char o_reify = anfd->reify;	804	unsigned char o_reify = anfd->reify;
694		805
695	anfd->reify = 0;	806	anfd->reify = 0;
696	anfd->events = events;	807	anfd->events = events;
697		808
698	if (o_events != events || o_reify & EV_IOFDSET)	809	if (o_events != events || o_reify & EV__IOFDSET)
699	backend_modify (EV_A_ fd, o_events, events);	810	backend_modify (EV_A_ fd, o_events, events);
700	}	811	}
701	}	812	}
702		813
703	fdchangecnt = 0;	814	fdchangecnt = 0;
704	}	815	}
705		816
706	void inline_size	817	/* something about the given fd changed */
		818	inline_size void
707	fd_change (EV_P_ int fd, int flags)	819	fd_change (EV_P_ int fd, int flags)
708	{	820	{
709	unsigned char reify = anfds [fd].reify;	821	unsigned char reify = anfds [fd].reify;
710	anfds [fd].reify |= flags;	822	anfds [fd].reify |= flags;
711		823
…		…
715	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	827	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
716	fdchanges [fdchangecnt - 1] = fd;	828	fdchanges [fdchangecnt - 1] = fd;
717	}	829	}
718	}	830	}
719		831
720	void inline_speed	832	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		833	inline_speed void
721	fd_kill (EV_P_ int fd)	834	fd_kill (EV_P_ int fd)
722	{	835	{
723	ev_io *w;	836	ev_io *w;
724		837
725	while ((w = (ev_io *)anfds [fd].head))	838	while ((w = (ev_io *)anfds [fd].head))
…		…
727	ev_io_stop (EV_A_ w);	840	ev_io_stop (EV_A_ w);
728	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	841	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
729	}	842	}
730	}	843	}
731		844
732	int inline_size	845	/* check whether the given fd is atcually valid, for error recovery */
		846	inline_size int
733	fd_valid (int fd)	847	fd_valid (int fd)
734	{	848	{
735	#ifdef _WIN32	849	#ifdef _WIN32
736	return _get_osfhandle (fd) != -1;	850	return _get_osfhandle (fd) != -1;
737	#else	851	#else
…		…
745	{	859	{
746	int fd;	860	int fd;
747		861
748	for (fd = 0; fd < anfdmax; ++fd)	862	for (fd = 0; fd < anfdmax; ++fd)
749	if (anfds [fd].events)	863	if (anfds [fd].events)
750	if (!fd_valid (fd) == -1 && errno == EBADF)	864	if (!fd_valid (fd) && errno == EBADF)
751	fd_kill (EV_A_ fd);	865	fd_kill (EV_A_ fd);
752	}	866	}
753		867
754	/* called on ENOMEM in select/poll to kill some fds and retry */	868	/* called on ENOMEM in select/poll to kill some fds and retry */
755	static void noinline	869	static void noinline
…		…
773		887
774	for (fd = 0; fd < anfdmax; ++fd)	888	for (fd = 0; fd < anfdmax; ++fd)
775	if (anfds [fd].events)	889	if (anfds [fd].events)
776	{	890	{
777	anfds [fd].events = 0;	891	anfds [fd].events = 0;
		892	anfds [fd].emask = 0;
778	fd_change (EV_A_ fd, EV_IOFDSET | 1);	893	fd_change (EV_A_ fd, EV__IOFDSET | 1);
779	}	894	}
780	}	895	}
781		896
782	/*****************************************************************************/	897	/*****************************************************************************/
783		898
…		…
791	* at the moment we allow libev the luxury of two heaps,	906	* at the moment we allow libev the luxury of two heaps,
792	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap	907	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
793	* which is more cache-efficient.	908	* which is more cache-efficient.
794	* the difference is about 5% with 50000+ watchers.	909	* the difference is about 5% with 50000+ watchers.
795	*/	910	*/
796	#define EV_USE_4HEAP !EV_MINIMAL
797	#if EV_USE_4HEAP	911	#if EV_USE_4HEAP
798		912
799	#define DHEAP 4	913	#define DHEAP 4
800	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	914	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
801		915	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
802	/* towards the root */	916	#define UPHEAP_DONE(p,k) ((p) == (k))
803	void inline_speed
804	upheap (ANHE *heap, int k)
805	{
806	ANHE he = heap [k];
807
808	for (;;)
809	{
810	int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
811
812	if (p == k || ANHE_at (heap [p]) <= ANHE_at (he))
813	break;
814
815	heap [k] = heap [p];
816	ev_active (ANHE_w (heap [k])) = k;
817	k = p;
818	}
819
820	ev_active (ANHE_w (he)) = k;
821	heap [k] = he;
822	}
823		917
824	/* away from the root */	918	/* away from the root */
825	void inline_speed	919	inline_speed void
826	downheap (ANHE *heap, int N, int k)	920	downheap (ANHE *heap, int N, int k)
827	{	921	{
828	ANHE he = heap [k];	922	ANHE he = heap [k];
829	ANHE *E = heap + N + HEAP0;	923	ANHE *E = heap + N + HEAP0;
830		924
831	for (;;)	925	for (;;)
832	{	926	{
833	ev_tstamp minat;	927	ev_tstamp minat;
834	ANHE *minpos;	928	ANHE *minpos;
835	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0;	929	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
836		930
837	// find minimum child	931	/* find minimum child */
838	if (expect_true (pos + DHEAP - 1 < E))	932	if (expect_true (pos + DHEAP - 1 < E))
839	{	933	{
840	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));	934	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
841	if (ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));	935	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
842	if (ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));	936	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
843	if (ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));	937	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
844	}	938	}
845	else if (pos < E)	939	else if (pos < E)
846	{	940	{
847	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));	941	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
848	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));	942	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
…		…
853	break;	947	break;
854		948
855	if (ANHE_at (he) <= minat)	949	if (ANHE_at (he) <= minat)
856	break;	950	break;
857		951
		952	heap [k] = *minpos;
858	ev_active (ANHE_w (*minpos)) = k;	953	ev_active (ANHE_w (*minpos)) = k;
859	heap [k] = *minpos;
860		954
861	k = minpos - heap;	955	k = minpos - heap;
862	}	956	}
863		957
		958	heap [k] = he;
864	ev_active (ANHE_w (he)) = k;	959	ev_active (ANHE_w (he)) = k;
865	heap [k] = he;
866	}	960	}
867		961
868	#else // 4HEAP	962	#else /* 4HEAP */
869		963
870	#define HEAP0 1	964	#define HEAP0 1
		965	#define HPARENT(k) ((k) >> 1)
		966	#define UPHEAP_DONE(p,k) (!(p))
871		967
872	/* towards the root */	968	/* away from the root */
873	void inline_speed	969	inline_speed void
874	upheap (ANHE *heap, int k)	970	downheap (ANHE *heap, int N, int k)
875	{	971	{
876	ANHE he = heap [k];	972	ANHE he = heap [k];
877		973
878	for (;;)	974	for (;;)
879	{	975	{
880	int p = k >> 1;	976	int c = k << 1;
881		977
882	/* maybe we could use a dummy element at heap [0]? */	978	if (c > N + HEAP0 - 1)
883	if (!p || ANHE_at (heap [p]) <= ANHE_at (he))
884	break;	979	break;
885		980
886	heap [k] = heap [p];
887	ev_active (ANHE_w (heap [k])) = k;
888	k = p;
889	}
890
891	heap [k] = w;
892	ev_active (ANHE_w (heap [k])) = k;
893	}
894
895	/* away from the root */
896	void inline_speed
897	downheap (ANHE *heap, int N, int k)
898	{
899	ANHE he = heap [k];
900
901	for (;;)
902	{
903	int c = k << 1;
904
905	if (c > N)
906	break;
907
908	c += c + 1 < N && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])	981	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
909	? 1 : 0;	982	? 1 : 0;
910		983
911	if (w->at <= ANHE_at (heap [c]))	984	if (ANHE_at (he) <= ANHE_at (heap [c]))
912	break;	985	break;
913		986
914	heap [k] = heap [c];	987	heap [k] = heap [c];
915	ev_active (ANHE_w (heap [k])) = k;	988	ev_active (ANHE_w (heap [k])) = k;
916		989
…		…
920	heap [k] = he;	993	heap [k] = he;
921	ev_active (ANHE_w (he)) = k;	994	ev_active (ANHE_w (he)) = k;
922	}	995	}
923	#endif	996	#endif
924		997
925	void inline_size	998	/* towards the root */
		999	inline_speed void
		1000	upheap (ANHE *heap, int k)
		1001	{
		1002	ANHE he = heap [k];
		1003
		1004	for (;;)
		1005	{
		1006	int p = HPARENT (k);
		1007
		1008	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		1009	break;
		1010
		1011	heap [k] = heap [p];
		1012	ev_active (ANHE_w (heap [k])) = k;
		1013	k = p;
		1014	}
		1015
		1016	heap [k] = he;
		1017	ev_active (ANHE_w (he)) = k;
		1018	}
		1019
		1020	/* move an element suitably so it is in a correct place */
		1021	inline_size void
926	adjustheap (ANHE *heap, int N, int k)	1022	adjustheap (ANHE *heap, int N, int k)
927	{	1023	{
		1024	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
928	upheap (heap, k);	1025	upheap (heap, k);
		1026	else
929	downheap (heap, N, k);	1027	downheap (heap, N, k);
		1028	}
		1029
		1030	/* rebuild the heap: this function is used only once and executed rarely */
		1031	inline_size void
		1032	reheap (ANHE *heap, int N)
		1033	{
		1034	int i;
		1035
		1036	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		1037	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		1038	for (i = 0; i < N; ++i)
		1039	upheap (heap, i + HEAP0);
930	}	1040	}
931		1041
932	/*****************************************************************************/	1042	/*****************************************************************************/
933		1043
		1044	/* associate signal watchers to a signal signal */
934	typedef struct	1045	typedef struct
935	{	1046	{
936	WL head;	1047	WL head;
937	EV_ATOMIC_T gotsig;	1048	EV_ATOMIC_T gotsig;
938	} ANSIG;	1049	} ANSIG;
…		…
940	static ANSIG *signals;	1051	static ANSIG *signals;
941	static int signalmax;	1052	static int signalmax;
942		1053
943	static EV_ATOMIC_T gotsig;	1054	static EV_ATOMIC_T gotsig;
944		1055
945	void inline_size
946	signals_init (ANSIG *base, int count)
947	{
948	while (count--)
949	{
950	base->head = 0;
951	base->gotsig = 0;
952
953	++base;
954	}
955	}
956
957	/*****************************************************************************/	1056	/*****************************************************************************/
958		1057
959	void inline_speed	1058	/* used to prepare libev internal fd's */
		1059	/* this is not fork-safe */
		1060	inline_speed void
960	fd_intern (int fd)	1061	fd_intern (int fd)
961	{	1062	{
962	#ifdef _WIN32	1063	#ifdef _WIN32
963	int arg = 1;	1064	unsigned long arg = 1;
964	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1065	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
965	#else	1066	#else
966	fcntl (fd, F_SETFD, FD_CLOEXEC);	1067	fcntl (fd, F_SETFD, FD_CLOEXEC);
967	fcntl (fd, F_SETFL, O_NONBLOCK);	1068	fcntl (fd, F_SETFL, O_NONBLOCK);
968	#endif	1069	#endif
969	}	1070	}
970		1071
971	static void noinline	1072	static void noinline
972	evpipe_init (EV_P)	1073	evpipe_init (EV_P)
973	{	1074	{
974	if (!ev_is_active (&pipeev))	1075	if (!ev_is_active (&pipe_w))
975	{	1076	{
976	#if EV_USE_EVENTFD	1077	#if EV_USE_EVENTFD
977	if ((evfd = eventfd (0, 0)) >= 0)	1078	if ((evfd = eventfd (0, 0)) >= 0)
978	{	1079	{
979	evpipe [0] = -1;	1080	evpipe [0] = -1;
980	fd_intern (evfd);	1081	fd_intern (evfd);
981	ev_io_set (&pipeev, evfd, EV_READ);	1082	ev_io_set (&pipe_w, evfd, EV_READ);
982	}	1083	}
983	else	1084	else
984	#endif	1085	#endif
985	{	1086	{
986	while (pipe (evpipe))	1087	while (pipe (evpipe))
987	syserr ("(libev) error creating signal/async pipe");	1088	ev_syserr ("(libev) error creating signal/async pipe");
988		1089
989	fd_intern (evpipe [0]);	1090	fd_intern (evpipe [0]);
990	fd_intern (evpipe [1]);	1091	fd_intern (evpipe [1]);
991	ev_io_set (&pipeev, evpipe [0], EV_READ);	1092	ev_io_set (&pipe_w, evpipe [0], EV_READ);
992	}	1093	}
993		1094
994	ev_io_start (EV_A_ &pipeev);	1095	ev_io_start (EV_A_ &pipe_w);
995	ev_unref (EV_A); /* watcher should not keep loop alive */	1096	ev_unref (EV_A); /* watcher should not keep loop alive */
996	}	1097	}
997	}	1098	}
998		1099
999	void inline_size	1100	inline_size void
1000	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1101	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1001	{	1102	{
1002	if (!*flag)	1103	if (!*flag)
1003	{	1104	{
1004	int old_errno = errno; /* save errno because write might clobber it */	1105	int old_errno = errno; /* save errno because write might clobber it */
…		…
1017		1118
1018	errno = old_errno;	1119	errno = old_errno;
1019	}	1120	}
1020	}	1121	}
1021		1122
		1123	/* called whenever the libev signal pipe */
		1124	/* got some events (signal, async) */
1022	static void	1125	static void
1023	pipecb (EV_P_ ev_io *iow, int revents)	1126	pipecb (EV_P_ ev_io *iow, int revents)
1024	{	1127	{
1025	#if EV_USE_EVENTFD	1128	#if EV_USE_EVENTFD
1026	if (evfd >= 0)	1129	if (evfd >= 0)
…		…
1082	ev_feed_signal_event (EV_P_ int signum)	1185	ev_feed_signal_event (EV_P_ int signum)
1083	{	1186	{
1084	WL w;	1187	WL w;
1085		1188
1086	#if EV_MULTIPLICITY	1189	#if EV_MULTIPLICITY
1087	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1190	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1088	#endif	1191	#endif
1089		1192
1090	--signum;	1193	--signum;
1091		1194
1092	if (signum < 0 || signum >= signalmax)	1195	if (signum < 0 || signum >= signalmax)
…		…
1108		1211
1109	#ifndef WIFCONTINUED	1212	#ifndef WIFCONTINUED
1110	# define WIFCONTINUED(status) 0	1213	# define WIFCONTINUED(status) 0
1111	#endif	1214	#endif
1112		1215
1113	void inline_speed	1216	/* handle a single child status event */
		1217	inline_speed void
1114	child_reap (EV_P_ int chain, int pid, int status)	1218	child_reap (EV_P_ int chain, int pid, int status)
1115	{	1219	{
1116	ev_child *w;	1220	ev_child *w;
1117	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1221	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1118		1222
…		…
1131		1235
1132	#ifndef WCONTINUED	1236	#ifndef WCONTINUED
1133	# define WCONTINUED 0	1237	# define WCONTINUED 0
1134	#endif	1238	#endif
1135		1239
		1240	/* called on sigchld etc., calls waitpid */
1136	static void	1241	static void
1137	childcb (EV_P_ ev_signal *sw, int revents)	1242	childcb (EV_P_ ev_signal *sw, int revents)
1138	{	1243	{
1139	int pid, status;	1244	int pid, status;
1140		1245
…		…
1221	/* kqueue is borked on everything but netbsd apparently */	1326	/* kqueue is borked on everything but netbsd apparently */
1222	/* it usually doesn't work correctly on anything but sockets and pipes */	1327	/* it usually doesn't work correctly on anything but sockets and pipes */
1223	flags &= ~EVBACKEND_KQUEUE;	1328	flags &= ~EVBACKEND_KQUEUE;
1224	#endif	1329	#endif
1225	#ifdef __APPLE__	1330	#ifdef __APPLE__
1226	// flags &= ~EVBACKEND_KQUEUE; for documentation	1331	/* only select works correctly on that "unix-certified" platform */
1227	flags &= ~EVBACKEND_POLL;	1332	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1333	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1228	#endif	1334	#endif
1229		1335
1230	return flags;	1336	return flags;
1231	}	1337	}
1232		1338
…		…
1252	ev_loop_count (EV_P)	1358	ev_loop_count (EV_P)
1253	{	1359	{
1254	return loop_count;	1360	return loop_count;
1255	}	1361	}
1256		1362
		1363	unsigned int
		1364	ev_loop_depth (EV_P)
		1365	{
		1366	return loop_depth;
		1367	}
		1368
1257	void	1369	void
1258	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1370	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1259	{	1371	{
1260	io_blocktime = interval;	1372	io_blocktime = interval;
1261	}	1373	}
…		…
1264	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1376	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1265	{	1377	{
1266	timeout_blocktime = interval;	1378	timeout_blocktime = interval;
1267	}	1379	}
1268		1380
		1381	/* initialise a loop structure, must be zero-initialised */
1269	static void noinline	1382	static void noinline
1270	loop_init (EV_P_ unsigned int flags)	1383	loop_init (EV_P_ unsigned int flags)
1271	{	1384	{
1272	if (!backend)	1385	if (!backend)
1273	{	1386	{
		1387	#if EV_USE_REALTIME
		1388	if (!have_realtime)
		1389	{
		1390	struct timespec ts;
		1391
		1392	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1393	have_realtime = 1;
		1394	}
		1395	#endif
		1396
1274	#if EV_USE_MONOTONIC	1397	#if EV_USE_MONOTONIC
		1398	if (!have_monotonic)
1275	{	1399	{
1276	struct timespec ts;	1400	struct timespec ts;
		1401
1277	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1402	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1278	have_monotonic = 1;	1403	have_monotonic = 1;
1279	}	1404	}
1280	#endif	1405	#endif
1281		1406
1282	ev_rt_now = ev_time ();	1407	ev_rt_now = ev_time ();
1283	mn_now = get_clock ();	1408	mn_now = get_clock ();
1284	now_floor = mn_now;	1409	now_floor = mn_now;
…		…
1321	#endif	1446	#endif
1322	#if EV_USE_SELECT	1447	#if EV_USE_SELECT
1323	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1448	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1324	#endif	1449	#endif
1325		1450
		1451	ev_prepare_init (&pending_w, pendingcb);
		1452
1326	ev_init (&pipeev, pipecb);	1453	ev_init (&pipe_w, pipecb);
1327	ev_set_priority (&pipeev, EV_MAXPRI);	1454	ev_set_priority (&pipe_w, EV_MAXPRI);
1328	}	1455	}
1329	}	1456	}
1330		1457
		1458	/* free up a loop structure */
1331	static void noinline	1459	static void noinline
1332	loop_destroy (EV_P)	1460	loop_destroy (EV_P)
1333	{	1461	{
1334	int i;	1462	int i;
1335		1463
1336	if (ev_is_active (&pipeev))	1464	if (ev_is_active (&pipe_w))
1337	{	1465	{
1338	ev_ref (EV_A); /* signal watcher */	1466	ev_ref (EV_A); /* signal watcher */
1339	ev_io_stop (EV_A_ &pipeev);	1467	ev_io_stop (EV_A_ &pipe_w);
1340		1468
1341	#if EV_USE_EVENTFD	1469	#if EV_USE_EVENTFD
1342	if (evfd >= 0)	1470	if (evfd >= 0)
1343	close (evfd);	1471	close (evfd);
1344	#endif	1472	#endif
…		…
1383	}	1511	}
1384		1512
1385	ev_free (anfds); anfdmax = 0;	1513	ev_free (anfds); anfdmax = 0;
1386		1514
1387	/* have to use the microsoft-never-gets-it-right macro */	1515	/* have to use the microsoft-never-gets-it-right macro */
		1516	array_free (rfeed, EMPTY);
1388	array_free (fdchange, EMPTY);	1517	array_free (fdchange, EMPTY);
1389	array_free (timer, EMPTY);	1518	array_free (timer, EMPTY);
1390	#if EV_PERIODIC_ENABLE	1519	#if EV_PERIODIC_ENABLE
1391	array_free (periodic, EMPTY);	1520	array_free (periodic, EMPTY);
1392	#endif	1521	#endif
…		…
1401		1530
1402	backend = 0;	1531	backend = 0;
1403	}	1532	}
1404		1533
1405	#if EV_USE_INOTIFY	1534	#if EV_USE_INOTIFY
1406	void inline_size infy_fork (EV_P);	1535	inline_size void infy_fork (EV_P);
1407	#endif	1536	#endif
1408		1537
1409	void inline_size	1538	inline_size void
1410	loop_fork (EV_P)	1539	loop_fork (EV_P)
1411	{	1540	{
1412	#if EV_USE_PORT	1541	#if EV_USE_PORT
1413	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1542	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1414	#endif	1543	#endif
…		…
1420	#endif	1549	#endif
1421	#if EV_USE_INOTIFY	1550	#if EV_USE_INOTIFY
1422	infy_fork (EV_A);	1551	infy_fork (EV_A);
1423	#endif	1552	#endif
1424		1553
1425	if (ev_is_active (&pipeev))	1554	if (ev_is_active (&pipe_w))
1426	{	1555	{
1427	/* this "locks" the handlers against writing to the pipe */	1556	/* this "locks" the handlers against writing to the pipe */
1428	/* while we modify the fd vars */	1557	/* while we modify the fd vars */
1429	gotsig = 1;	1558	gotsig = 1;
1430	#if EV_ASYNC_ENABLE	1559	#if EV_ASYNC_ENABLE
1431	gotasync = 1;	1560	gotasync = 1;
1432	#endif	1561	#endif
1433		1562
1434	ev_ref (EV_A);	1563	ev_ref (EV_A);
1435	ev_io_stop (EV_A_ &pipeev);	1564	ev_io_stop (EV_A_ &pipe_w);
1436		1565
1437	#if EV_USE_EVENTFD	1566	#if EV_USE_EVENTFD
1438	if (evfd >= 0)	1567	if (evfd >= 0)
1439	close (evfd);	1568	close (evfd);
1440	#endif	1569	#endif
…		…
1445	close (evpipe [1]);	1574	close (evpipe [1]);
1446	}	1575	}
1447		1576
1448	evpipe_init (EV_A);	1577	evpipe_init (EV_A);
1449	/* now iterate over everything, in case we missed something */	1578	/* now iterate over everything, in case we missed something */
1450	pipecb (EV_A_ &pipeev, EV_READ);	1579	pipecb (EV_A_ &pipe_w, EV_READ);
1451	}	1580	}
1452		1581
1453	postfork = 0;	1582	postfork = 0;
1454	}	1583	}
1455		1584
1456	#if EV_MULTIPLICITY	1585	#if EV_MULTIPLICITY
		1586
1457	struct ev_loop *	1587	struct ev_loop *
1458	ev_loop_new (unsigned int flags)	1588	ev_loop_new (unsigned int flags)
1459	{	1589	{
1460	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1590	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1461		1591
…		…
1479	void	1609	void
1480	ev_loop_fork (EV_P)	1610	ev_loop_fork (EV_P)
1481	{	1611	{
1482	postfork = 1; /* must be in line with ev_default_fork */	1612	postfork = 1; /* must be in line with ev_default_fork */
1483	}	1613	}
		1614
		1615	#if EV_VERIFY
		1616	static void noinline
		1617	verify_watcher (EV_P_ W w)
		1618	{
		1619	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1620
		1621	if (w->pending)
		1622	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1623	}
		1624
		1625	static void noinline
		1626	verify_heap (EV_P_ ANHE *heap, int N)
		1627	{
		1628	int i;
		1629
		1630	for (i = HEAP0; i < N + HEAP0; ++i)
		1631	{
		1632	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1633	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1634	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1635
		1636	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1637	}
		1638	}
		1639
		1640	static void noinline
		1641	array_verify (EV_P_ W *ws, int cnt)
		1642	{
		1643	while (cnt--)
		1644	{
		1645	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1646	verify_watcher (EV_A_ ws [cnt]);
		1647	}
		1648	}
		1649	#endif
		1650
		1651	void
		1652	ev_loop_verify (EV_P)
		1653	{
		1654	#if EV_VERIFY
		1655	int i;
		1656	WL w;
		1657
		1658	assert (activecnt >= -1);
		1659
		1660	assert (fdchangemax >= fdchangecnt);
		1661	for (i = 0; i < fdchangecnt; ++i)
		1662	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1663
		1664	assert (anfdmax >= 0);
		1665	for (i = 0; i < anfdmax; ++i)
		1666	for (w = anfds [i].head; w; w = w->next)
		1667	{
		1668	verify_watcher (EV_A_ (W)w);
		1669	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1670	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1671	}
		1672
		1673	assert (timermax >= timercnt);
		1674	verify_heap (EV_A_ timers, timercnt);
		1675
		1676	#if EV_PERIODIC_ENABLE
		1677	assert (periodicmax >= periodiccnt);
		1678	verify_heap (EV_A_ periodics, periodiccnt);
		1679	#endif
		1680
		1681	for (i = NUMPRI; i--; )
		1682	{
		1683	assert (pendingmax [i] >= pendingcnt [i]);
		1684	#if EV_IDLE_ENABLE
		1685	assert (idleall >= 0);
		1686	assert (idlemax [i] >= idlecnt [i]);
		1687	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		1688	#endif
		1689	}
		1690
		1691	#if EV_FORK_ENABLE
		1692	assert (forkmax >= forkcnt);
		1693	array_verify (EV_A_ (W *)forks, forkcnt);
		1694	#endif
		1695
		1696	#if EV_ASYNC_ENABLE
		1697	assert (asyncmax >= asynccnt);
		1698	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1699	#endif
		1700
		1701	assert (preparemax >= preparecnt);
		1702	array_verify (EV_A_ (W *)prepares, preparecnt);
		1703
		1704	assert (checkmax >= checkcnt);
		1705	array_verify (EV_A_ (W *)checks, checkcnt);
		1706
		1707	# if 0
		1708	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1709	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1484	#endif	1710	# endif
		1711	#endif
		1712	}
		1713
		1714	#endif /* multiplicity */
1485		1715
1486	#if EV_MULTIPLICITY	1716	#if EV_MULTIPLICITY
1487	struct ev_loop *	1717	struct ev_loop *
1488	ev_default_loop_init (unsigned int flags)	1718	ev_default_loop_init (unsigned int flags)
1489	#else	1719	#else
…		…
1522	{	1752	{
1523	#if EV_MULTIPLICITY	1753	#if EV_MULTIPLICITY
1524	struct ev_loop *loop = ev_default_loop_ptr;	1754	struct ev_loop *loop = ev_default_loop_ptr;
1525	#endif	1755	#endif
1526		1756
		1757	ev_default_loop_ptr = 0;
		1758
1527	#ifndef _WIN32	1759	#ifndef _WIN32
1528	ev_ref (EV_A); /* child watcher */	1760	ev_ref (EV_A); /* child watcher */
1529	ev_signal_stop (EV_A_ &childev);	1761	ev_signal_stop (EV_A_ &childev);
1530	#endif	1762	#endif
1531		1763
…		…
1537	{	1769	{
1538	#if EV_MULTIPLICITY	1770	#if EV_MULTIPLICITY
1539	struct ev_loop *loop = ev_default_loop_ptr;	1771	struct ev_loop *loop = ev_default_loop_ptr;
1540	#endif	1772	#endif
1541		1773
1542	if (backend)
1543	postfork = 1; /* must be in line with ev_loop_fork */	1774	postfork = 1; /* must be in line with ev_loop_fork */
1544	}	1775	}
1545		1776
1546	/*****************************************************************************/	1777	/*****************************************************************************/
1547		1778
1548	void	1779	void
1549	ev_invoke (EV_P_ void *w, int revents)	1780	ev_invoke (EV_P_ void *w, int revents)
1550	{	1781	{
1551	EV_CB_INVOKE ((W)w, revents);	1782	EV_CB_INVOKE ((W)w, revents);
1552	}	1783	}
1553		1784
1554	void inline_speed	1785	inline_speed void
1555	call_pending (EV_P)	1786	call_pending (EV_P)
1556	{	1787	{
1557	int pri;	1788	int pri;
1558		1789
1559	for (pri = NUMPRI; pri--; )	1790	for (pri = NUMPRI; pri--; )
1560	while (pendingcnt [pri])	1791	while (pendingcnt [pri])
1561	{	1792	{
1562	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1793	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1563		1794
1564	if (expect_true (p->w))
1565	{
1566	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1795	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1796	/* ^ this is no longer true, as pending_w could be here */
1567		1797
1568	p->w->pending = 0;	1798	p->w->pending = 0;
1569	EV_CB_INVOKE (p->w, p->events);	1799	EV_CB_INVOKE (p->w, p->events);
1570	}	1800	EV_FREQUENT_CHECK;
1571	}	1801	}
1572	}	1802	}
1573		1803
1574	#if EV_IDLE_ENABLE	1804	#if EV_IDLE_ENABLE
1575	void inline_size	1805	/* make idle watchers pending. this handles the "call-idle */
		1806	/* only when higher priorities are idle" logic */
		1807	inline_size void
1576	idle_reify (EV_P)	1808	idle_reify (EV_P)
1577	{	1809	{
1578	if (expect_false (idleall))	1810	if (expect_false (idleall))
1579	{	1811	{
1580	int pri;	1812	int pri;
…		…
1592	}	1824	}
1593	}	1825	}
1594	}	1826	}
1595	#endif	1827	#endif
1596		1828
1597	void inline_size	1829	/* make timers pending */
		1830	inline_size void
1598	timers_reify (EV_P)	1831	timers_reify (EV_P)
1599	{	1832	{
		1833	EV_FREQUENT_CHECK;
		1834
1600	while (timercnt && ANHE_at (timers [HEAP0]) <= mn_now)	1835	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1601	{	1836	{
1602	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	1837	do
1603
1604	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1605
1606	/* first reschedule or stop timer */
1607	if (w->repeat)
1608	{	1838	{
		1839	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1840
		1841	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		1842
		1843	/* first reschedule or stop timer */
		1844	if (w->repeat)
		1845	{
		1846	ev_at (w) += w->repeat;
		1847	if (ev_at (w) < mn_now)
		1848	ev_at (w) = mn_now;
		1849
1609	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1850	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1610		1851
1611	ev_at (w) += w->repeat;
1612	if (ev_at (w) < mn_now)
1613	ev_at (w) = mn_now;
1614
1615	ANHE_at_set (timers [HEAP0]);	1852	ANHE_at_cache (timers [HEAP0]);
1616	downheap (timers, timercnt, HEAP0);	1853	downheap (timers, timercnt, HEAP0);
		1854	}
		1855	else
		1856	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1857
		1858	EV_FREQUENT_CHECK;
		1859	feed_reverse (EV_A_ (W)w);
1617	}	1860	}
1618	else	1861	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1619	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1620		1862
1621	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1863	feed_reverse_done (EV_A_ EV_TIMEOUT);
1622	}	1864	}
1623	}	1865	}
1624		1866
1625	#if EV_PERIODIC_ENABLE	1867	#if EV_PERIODIC_ENABLE
1626	void inline_size	1868	/* make periodics pending */
		1869	inline_size void
1627	periodics_reify (EV_P)	1870	periodics_reify (EV_P)
1628	{	1871	{
		1872	EV_FREQUENT_CHECK;
		1873
1629	while (periodiccnt && ANHE_at (periodics [HEAP0]) <= ev_rt_now)	1874	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1630	{	1875	{
1631	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	1876	int feed_count = 0;
1632		1877
1633	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	1878	do
1634
1635	/* first reschedule or stop timer */
1636	if (w->reschedule_cb)
1637	{	1879	{
		1880	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1881
		1882	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		1883
		1884	/* first reschedule or stop timer */
		1885	if (w->reschedule_cb)
		1886	{
1638	ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);	1887	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1888
1639	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));	1889	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		1890
1640	ANHE_at_set (periodics [HEAP0]);	1891	ANHE_at_cache (periodics [HEAP0]);
1641	downheap (periodics, periodiccnt, HEAP0);	1892	downheap (periodics, periodiccnt, HEAP0);
		1893	}
		1894	else if (w->interval)
		1895	{
		1896	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1897	/* if next trigger time is not sufficiently in the future, put it there */
		1898	/* this might happen because of floating point inexactness */
		1899	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1900	{
		1901	ev_at (w) += w->interval;
		1902
		1903	/* if interval is unreasonably low we might still have a time in the past */
		1904	/* so correct this. this will make the periodic very inexact, but the user */
		1905	/* has effectively asked to get triggered more often than possible */
		1906	if (ev_at (w) < ev_rt_now)
		1907	ev_at (w) = ev_rt_now;
		1908	}
		1909
		1910	ANHE_at_cache (periodics [HEAP0]);
		1911	downheap (periodics, periodiccnt, HEAP0);
		1912	}
		1913	else
		1914	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1915
		1916	EV_FREQUENT_CHECK;
		1917	feed_reverse (EV_A_ (W)w);
1642	}	1918	}
1643	else if (w->interval)	1919	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1644	{
1645	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1646	if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1647	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1648	ANHE_at_set (periodics [HEAP0]);
1649	downheap (periodics, periodiccnt, HEAP0);
1650	}
1651	else
1652	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1653		1920
1654	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1921	feed_reverse_done (EV_A_ EV_PERIODIC);
1655	}	1922	}
1656	}	1923	}
1657		1924
		1925	/* simply recalculate all periodics */
		1926	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1658	static void noinline	1927	static void noinline
1659	periodics_reschedule (EV_P)	1928	periodics_reschedule (EV_P)
1660	{	1929	{
1661	int i;	1930	int i;
1662		1931
…		…
1668	if (w->reschedule_cb)	1937	if (w->reschedule_cb)
1669	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1938	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1670	else if (w->interval)	1939	else if (w->interval)
1671	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	1940	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1672		1941
1673	ANHE_at_set (periodics [i]);	1942	ANHE_at_cache (periodics [i]);
		1943	}
		1944
		1945	reheap (periodics, periodiccnt);
		1946	}
		1947	#endif
		1948
		1949	/* adjust all timers by a given offset */
		1950	static void noinline
		1951	timers_reschedule (EV_P_ ev_tstamp adjust)
		1952	{
		1953	int i;
		1954
		1955	for (i = 0; i < timercnt; ++i)
1674	}	1956	{
1675		1957	ANHE *he = timers + i + HEAP0;
1676	/* now rebuild the heap, this for the 2-heap, inefficient for the 4-heap, but correct */	1958	ANHE_w (*he)->at += adjust;
1677	for (i = periodiccnt >> 1; --i; )	1959	ANHE_at_cache (*he);
1678	downheap (periodics, periodiccnt, i + HEAP0);	1960	}
1679	}	1961	}
1680	#endif
1681		1962
1682	void inline_speed	1963	/* fetch new monotonic and realtime times from the kernel */
		1964	/* also detetc if there was a timejump, and act accordingly */
		1965	inline_speed void
1683	time_update (EV_P_ ev_tstamp max_block)	1966	time_update (EV_P_ ev_tstamp max_block)
1684	{	1967	{
1685	int i;
1686
1687	#if EV_USE_MONOTONIC	1968	#if EV_USE_MONOTONIC
1688	if (expect_true (have_monotonic))	1969	if (expect_true (have_monotonic))
1689	{	1970	{
		1971	int i;
1690	ev_tstamp odiff = rtmn_diff;	1972	ev_tstamp odiff = rtmn_diff;
1691		1973
1692	mn_now = get_clock ();	1974	mn_now = get_clock ();
1693		1975
1694	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	1976	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1720	ev_rt_now = ev_time ();	2002	ev_rt_now = ev_time ();
1721	mn_now = get_clock ();	2003	mn_now = get_clock ();
1722	now_floor = mn_now;	2004	now_floor = mn_now;
1723	}	2005	}
1724		2006
		2007	/* no timer adjustment, as the monotonic clock doesn't jump */
		2008	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1725	# if EV_PERIODIC_ENABLE	2009	# if EV_PERIODIC_ENABLE
1726	periodics_reschedule (EV_A);	2010	periodics_reschedule (EV_A);
1727	# endif	2011	# endif
1728	/* no timer adjustment, as the monotonic clock doesn't jump */
1729	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1730	}	2012	}
1731	else	2013	else
1732	#endif	2014	#endif
1733	{	2015	{
1734	ev_rt_now = ev_time ();	2016	ev_rt_now = ev_time ();
1735		2017
1736	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2018	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1737	{	2019	{
		2020	/* adjust timers. this is easy, as the offset is the same for all of them */
		2021	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1738	#if EV_PERIODIC_ENABLE	2022	#if EV_PERIODIC_ENABLE
1739	periodics_reschedule (EV_A);	2023	periodics_reschedule (EV_A);
1740	#endif	2024	#endif
1741	/* adjust timers. this is easy, as the offset is the same for all of them */
1742	for (i = 0; i < timercnt; ++i)
1743	{
1744	ANHE *he = timers + i + HEAP0;
1745	ANHE_w (*he)->at += ev_rt_now - mn_now;
1746	ANHE_at_set (*he);
1747	}
1748	}	2025	}
1749		2026
1750	mn_now = ev_rt_now;	2027	mn_now = ev_rt_now;
1751	}	2028	}
1752	}	2029	}
1753		2030
1754	void	2031	void
1755	ev_ref (EV_P)
1756	{
1757	++activecnt;
1758	}
1759
1760	void
1761	ev_unref (EV_P)
1762	{
1763	--activecnt;
1764	}
1765
1766	static int loop_done;
1767
1768	void
1769	ev_loop (EV_P_ int flags)	2032	ev_loop (EV_P_ int flags)
1770	{	2033	{
		2034	++loop_depth;
		2035
1771	loop_done = EVUNLOOP_CANCEL;	2036	loop_done = EVUNLOOP_CANCEL;
1772		2037
1773	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2038	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1774		2039
1775	do	2040	do
1776	{	2041	{
		2042	#if EV_VERIFY >= 2
		2043	ev_loop_verify (EV_A);
		2044	#endif
		2045
1777	#ifndef _WIN32	2046	#ifndef _WIN32
1778	if (expect_false (curpid)) /* penalise the forking check even more */	2047	if (expect_false (curpid)) /* penalise the forking check even more */
1779	if (expect_false (getpid () != curpid))	2048	if (expect_false (getpid () != curpid))
1780	{	2049	{
1781	curpid = getpid ();	2050	curpid = getpid ();
…		…
1798	{	2067	{
1799	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2068	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1800	call_pending (EV_A);	2069	call_pending (EV_A);
1801	}	2070	}
1802		2071
1803	if (expect_false (!activecnt))
1804	break;
1805
1806	/* we might have forked, so reify kernel state if necessary */	2072	/* we might have forked, so reify kernel state if necessary */
1807	if (expect_false (postfork))	2073	if (expect_false (postfork))
1808	loop_fork (EV_A);	2074	loop_fork (EV_A);
1809		2075
1810	/* update fd-related kernel structures */	2076	/* update fd-related kernel structures */
…		…
1815	ev_tstamp waittime = 0.;	2081	ev_tstamp waittime = 0.;
1816	ev_tstamp sleeptime = 0.;	2082	ev_tstamp sleeptime = 0.;
1817		2083
1818	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2084	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1819	{	2085	{
		2086	/* remember old timestamp for io_blocktime calculation */
		2087	ev_tstamp prev_mn_now = mn_now;
		2088
1820	/* update time to cancel out callback processing overhead */	2089	/* update time to cancel out callback processing overhead */
1821	time_update (EV_A_ 1e100);	2090	time_update (EV_A_ 1e100);
1822		2091
1823	waittime = MAX_BLOCKTIME;	2092	waittime = MAX_BLOCKTIME;
1824		2093
…		…
1834	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2103	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1835	if (waittime > to) waittime = to;	2104	if (waittime > to) waittime = to;
1836	}	2105	}
1837	#endif	2106	#endif
1838		2107
		2108	/* don't let timeouts decrease the waittime below timeout_blocktime */
1839	if (expect_false (waittime < timeout_blocktime))	2109	if (expect_false (waittime < timeout_blocktime))
1840	waittime = timeout_blocktime;	2110	waittime = timeout_blocktime;
1841		2111
1842	sleeptime = waittime - backend_fudge;	2112	/* extra check because io_blocktime is commonly 0 */
1843
1844	if (expect_true (sleeptime > io_blocktime))	2113	if (expect_false (io_blocktime))
1845	sleeptime = io_blocktime;
1846
1847	if (sleeptime)
1848	{	2114	{
		2115	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2116
		2117	if (sleeptime > waittime - backend_fudge)
		2118	sleeptime = waittime - backend_fudge;
		2119
		2120	if (expect_true (sleeptime > 0.))
		2121	{
1849	ev_sleep (sleeptime);	2122	ev_sleep (sleeptime);
1850	waittime -= sleeptime;	2123	waittime -= sleeptime;
		2124	}
1851	}	2125	}
1852	}	2126	}
1853		2127
1854	++loop_count;	2128	++loop_count;
1855	backend_poll (EV_A_ waittime);	2129	backend_poll (EV_A_ waittime);
…		…
1881	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2155	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1882	));	2156	));
1883		2157
1884	if (loop_done == EVUNLOOP_ONE)	2158	if (loop_done == EVUNLOOP_ONE)
1885	loop_done = EVUNLOOP_CANCEL;	2159	loop_done = EVUNLOOP_CANCEL;
		2160
		2161	--loop_depth;
1886	}	2162	}
1887		2163
1888	void	2164	void
1889	ev_unloop (EV_P_ int how)	2165	ev_unloop (EV_P_ int how)
1890	{	2166	{
1891	loop_done = how;	2167	loop_done = how;
1892	}	2168	}
1893		2169
		2170	void
		2171	ev_ref (EV_P)
		2172	{
		2173	++activecnt;
		2174	}
		2175
		2176	void
		2177	ev_unref (EV_P)
		2178	{
		2179	--activecnt;
		2180	}
		2181
		2182	void
		2183	ev_now_update (EV_P)
		2184	{
		2185	time_update (EV_A_ 1e100);
		2186	}
		2187
		2188	void
		2189	ev_suspend (EV_P)
		2190	{
		2191	ev_now_update (EV_A);
		2192	}
		2193
		2194	void
		2195	ev_resume (EV_P)
		2196	{
		2197	ev_tstamp mn_prev = mn_now;
		2198
		2199	ev_now_update (EV_A);
		2200	timers_reschedule (EV_A_ mn_now - mn_prev);
		2201	#if EV_PERIODIC_ENABLE
		2202	/* TODO: really do this? */
		2203	periodics_reschedule (EV_A);
		2204	#endif
		2205	}
		2206
1894	/*****************************************************************************/	2207	/*****************************************************************************/
		2208	/* singly-linked list management, used when the expected list length is short */
1895		2209
1896	void inline_size	2210	inline_size void
1897	wlist_add (WL *head, WL elem)	2211	wlist_add (WL *head, WL elem)
1898	{	2212	{
1899	elem->next = *head;	2213	elem->next = *head;
1900	*head = elem;	2214	*head = elem;
1901	}	2215	}
1902		2216
1903	void inline_size	2217	inline_size void
1904	wlist_del (WL *head, WL elem)	2218	wlist_del (WL *head, WL elem)
1905	{	2219	{
1906	while (*head)	2220	while (*head)
1907	{	2221	{
1908	if (*head == elem)	2222	if (*head == elem)
…		…
1913		2227
1914	head = &(*head)->next;	2228	head = &(*head)->next;
1915	}	2229	}
1916	}	2230	}
1917		2231
1918	void inline_speed	2232	/* internal, faster, version of ev_clear_pending */
		2233	inline_speed void
1919	clear_pending (EV_P_ W w)	2234	clear_pending (EV_P_ W w)
1920	{	2235	{
1921	if (w->pending)	2236	if (w->pending)
1922	{	2237	{
1923	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2238	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1924	w->pending = 0;	2239	w->pending = 0;
1925	}	2240	}
1926	}	2241	}
1927		2242
1928	int	2243	int
…		…
1932	int pending = w_->pending;	2247	int pending = w_->pending;
1933		2248
1934	if (expect_true (pending))	2249	if (expect_true (pending))
1935	{	2250	{
1936	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2251	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2252	p->w = (W)&pending_w;
1937	w_->pending = 0;	2253	w_->pending = 0;
1938	p->w = 0;
1939	return p->events;	2254	return p->events;
1940	}	2255	}
1941	else	2256	else
1942	return 0;	2257	return 0;
1943	}	2258	}
1944		2259
1945	void inline_size	2260	inline_size void
1946	pri_adjust (EV_P_ W w)	2261	pri_adjust (EV_P_ W w)
1947	{	2262	{
1948	int pri = w->priority;	2263	int pri = w->priority;
1949	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2264	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1950	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2265	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1951	w->priority = pri;	2266	w->priority = pri;
1952	}	2267	}
1953		2268
1954	void inline_speed	2269	inline_speed void
1955	ev_start (EV_P_ W w, int active)	2270	ev_start (EV_P_ W w, int active)
1956	{	2271	{
1957	pri_adjust (EV_A_ w);	2272	pri_adjust (EV_A_ w);
1958	w->active = active;	2273	w->active = active;
1959	ev_ref (EV_A);	2274	ev_ref (EV_A);
1960	}	2275	}
1961		2276
1962	void inline_size	2277	inline_size void
1963	ev_stop (EV_P_ W w)	2278	ev_stop (EV_P_ W w)
1964	{	2279	{
1965	ev_unref (EV_A);	2280	ev_unref (EV_A);
1966	w->active = 0;	2281	w->active = 0;
1967	}	2282	}
…		…
1974	int fd = w->fd;	2289	int fd = w->fd;
1975		2290
1976	if (expect_false (ev_is_active (w)))	2291	if (expect_false (ev_is_active (w)))
1977	return;	2292	return;
1978		2293
1979	assert (("ev_io_start called with negative fd", fd >= 0));	2294	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2295	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
		2296
		2297	EV_FREQUENT_CHECK;
1980		2298
1981	ev_start (EV_A_ (W)w, 1);	2299	ev_start (EV_A_ (W)w, 1);
1982	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2300	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1983	wlist_add (&anfds[fd].head, (WL)w);	2301	wlist_add (&anfds[fd].head, (WL)w);
1984		2302
1985	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2303	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
1986	w->events &= ~EV_IOFDSET;	2304	w->events &= ~EV__IOFDSET;
		2305
		2306	EV_FREQUENT_CHECK;
1987	}	2307	}
1988		2308
1989	void noinline	2309	void noinline
1990	ev_io_stop (EV_P_ ev_io *w)	2310	ev_io_stop (EV_P_ ev_io *w)
1991	{	2311	{
1992	clear_pending (EV_A_ (W)w);	2312	clear_pending (EV_A_ (W)w);
1993	if (expect_false (!ev_is_active (w)))	2313	if (expect_false (!ev_is_active (w)))
1994	return;	2314	return;
1995		2315
1996	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2316	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		2317
		2318	EV_FREQUENT_CHECK;
1997		2319
1998	wlist_del (&anfds[w->fd].head, (WL)w);	2320	wlist_del (&anfds[w->fd].head, (WL)w);
1999	ev_stop (EV_A_ (W)w);	2321	ev_stop (EV_A_ (W)w);
2000		2322
2001	fd_change (EV_A_ w->fd, 1);	2323	fd_change (EV_A_ w->fd, 1);
		2324
		2325	EV_FREQUENT_CHECK;
2002	}	2326	}
2003		2327
2004	void noinline	2328	void noinline
2005	ev_timer_start (EV_P_ ev_timer *w)	2329	ev_timer_start (EV_P_ ev_timer *w)
2006	{	2330	{
2007	if (expect_false (ev_is_active (w)))	2331	if (expect_false (ev_is_active (w)))
2008	return;	2332	return;
2009		2333
2010	ev_at (w) += mn_now;	2334	ev_at (w) += mn_now;
2011		2335
2012	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2336	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2013		2337
		2338	EV_FREQUENT_CHECK;
		2339
		2340	++timercnt;
2014	ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1);	2341	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2015	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);	2342	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
2016	ANHE_w (timers [ev_active (w)]) = (WT)w;	2343	ANHE_w (timers [ev_active (w)]) = (WT)w;
2017	ANHE_at_set (timers [ev_active (w)]);	2344	ANHE_at_cache (timers [ev_active (w)]);
2018	upheap (timers, ev_active (w));	2345	upheap (timers, ev_active (w));
2019		2346
		2347	EV_FREQUENT_CHECK;
		2348
2020	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2349	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2021	}	2350	}
2022		2351
2023	void noinline	2352	void noinline
2024	ev_timer_stop (EV_P_ ev_timer *w)	2353	ev_timer_stop (EV_P_ ev_timer *w)
2025	{	2354	{
2026	clear_pending (EV_A_ (W)w);	2355	clear_pending (EV_A_ (W)w);
2027	if (expect_false (!ev_is_active (w)))	2356	if (expect_false (!ev_is_active (w)))
2028	return;	2357	return;
2029		2358
		2359	EV_FREQUENT_CHECK;
		2360
2030	{	2361	{
2031	int active = ev_active (w);	2362	int active = ev_active (w);
2032		2363
2033	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2364	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2034		2365
		2366	--timercnt;
		2367
2035	if (expect_true (active < timercnt + HEAP0 - 1))	2368	if (expect_true (active < timercnt + HEAP0))
2036	{	2369	{
2037	timers [active] = timers [timercnt + HEAP0 - 1];	2370	timers [active] = timers [timercnt + HEAP0];
2038	adjustheap (timers, timercnt, active);	2371	adjustheap (timers, timercnt, active);
2039	}	2372	}
2040
2041	--timercnt;
2042	}	2373	}
		2374
		2375	EV_FREQUENT_CHECK;
2043		2376
2044	ev_at (w) -= mn_now;	2377	ev_at (w) -= mn_now;
2045		2378
2046	ev_stop (EV_A_ (W)w);	2379	ev_stop (EV_A_ (W)w);
2047	}	2380	}
2048		2381
2049	void noinline	2382	void noinline
2050	ev_timer_again (EV_P_ ev_timer *w)	2383	ev_timer_again (EV_P_ ev_timer *w)
2051	{	2384	{
		2385	EV_FREQUENT_CHECK;
		2386
2052	if (ev_is_active (w))	2387	if (ev_is_active (w))
2053	{	2388	{
2054	if (w->repeat)	2389	if (w->repeat)
2055	{	2390	{
2056	ev_at (w) = mn_now + w->repeat;	2391	ev_at (w) = mn_now + w->repeat;
2057	ANHE_at_set (timers [ev_active (w)]);	2392	ANHE_at_cache (timers [ev_active (w)]);
2058	adjustheap (timers, timercnt, ev_active (w));	2393	adjustheap (timers, timercnt, ev_active (w));
2059	}	2394	}
2060	else	2395	else
2061	ev_timer_stop (EV_A_ w);	2396	ev_timer_stop (EV_A_ w);
2062	}	2397	}
2063	else if (w->repeat)	2398	else if (w->repeat)
2064	{	2399	{
2065	ev_at (w) = w->repeat;	2400	ev_at (w) = w->repeat;
2066	ev_timer_start (EV_A_ w);	2401	ev_timer_start (EV_A_ w);
2067	}	2402	}
		2403
		2404	EV_FREQUENT_CHECK;
2068	}	2405	}
2069		2406
2070	#if EV_PERIODIC_ENABLE	2407	#if EV_PERIODIC_ENABLE
2071	void noinline	2408	void noinline
2072	ev_periodic_start (EV_P_ ev_periodic *w)	2409	ev_periodic_start (EV_P_ ev_periodic *w)
…		…
2076		2413
2077	if (w->reschedule_cb)	2414	if (w->reschedule_cb)
2078	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2415	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2079	else if (w->interval)	2416	else if (w->interval)
2080	{	2417	{
2081	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2418	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2082	/* this formula differs from the one in periodic_reify because we do not always round up */	2419	/* this formula differs from the one in periodic_reify because we do not always round up */
2083	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2420	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2084	}	2421	}
2085	else	2422	else
2086	ev_at (w) = w->offset;	2423	ev_at (w) = w->offset;
2087		2424
		2425	EV_FREQUENT_CHECK;
		2426
		2427	++periodiccnt;
2088	ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1);	2428	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2089	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);	2429	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2090	ANHE_w (periodics [ev_active (w)]) = (WT)w;	2430	ANHE_w (periodics [ev_active (w)]) = (WT)w;
		2431	ANHE_at_cache (periodics [ev_active (w)]);
2091	upheap (periodics, ev_active (w));	2432	upheap (periodics, ev_active (w));
2092		2433
		2434	EV_FREQUENT_CHECK;
		2435
2093	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2436	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2094	}	2437	}
2095		2438
2096	void noinline	2439	void noinline
2097	ev_periodic_stop (EV_P_ ev_periodic *w)	2440	ev_periodic_stop (EV_P_ ev_periodic *w)
2098	{	2441	{
2099	clear_pending (EV_A_ (W)w);	2442	clear_pending (EV_A_ (W)w);
2100	if (expect_false (!ev_is_active (w)))	2443	if (expect_false (!ev_is_active (w)))
2101	return;	2444	return;
2102		2445
		2446	EV_FREQUENT_CHECK;
		2447
2103	{	2448	{
2104	int active = ev_active (w);	2449	int active = ev_active (w);
2105		2450
2106	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2451	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2107		2452
		2453	--periodiccnt;
		2454
2108	if (expect_true (active < periodiccnt + HEAP0 - 1))	2455	if (expect_true (active < periodiccnt + HEAP0))
2109	{	2456	{
2110	periodics [active] = periodics [periodiccnt + HEAP0 - 1];	2457	periodics [active] = periodics [periodiccnt + HEAP0];
2111	adjustheap (periodics, periodiccnt, active);	2458	adjustheap (periodics, periodiccnt, active);
2112	}	2459	}
2113
2114	--periodiccnt;
2115	}	2460	}
		2461
		2462	EV_FREQUENT_CHECK;
2116		2463
2117	ev_stop (EV_A_ (W)w);	2464	ev_stop (EV_A_ (W)w);
2118	}	2465	}
2119		2466
2120	void noinline	2467	void noinline
…		…
2132		2479
2133	void noinline	2480	void noinline
2134	ev_signal_start (EV_P_ ev_signal *w)	2481	ev_signal_start (EV_P_ ev_signal *w)
2135	{	2482	{
2136	#if EV_MULTIPLICITY	2483	#if EV_MULTIPLICITY
2137	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2484	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2138	#endif	2485	#endif
2139	if (expect_false (ev_is_active (w)))	2486	if (expect_false (ev_is_active (w)))
2140	return;	2487	return;
2141		2488
2142	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2489	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2143		2490
2144	evpipe_init (EV_A);	2491	evpipe_init (EV_A);
		2492
		2493	EV_FREQUENT_CHECK;
2145		2494
2146	{	2495	{
2147	#ifndef _WIN32	2496	#ifndef _WIN32
2148	sigset_t full, prev;	2497	sigset_t full, prev;
2149	sigfillset (&full);	2498	sigfillset (&full);
2150	sigprocmask (SIG_SETMASK, &full, &prev);	2499	sigprocmask (SIG_SETMASK, &full, &prev);
2151	#endif	2500	#endif
2152		2501
2153	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2502	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2154		2503
2155	#ifndef _WIN32	2504	#ifndef _WIN32
2156	sigprocmask (SIG_SETMASK, &prev, 0);	2505	sigprocmask (SIG_SETMASK, &prev, 0);
2157	#endif	2506	#endif
2158	}	2507	}
…		…
2170	sigfillset (&sa.sa_mask);	2519	sigfillset (&sa.sa_mask);
2171	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2520	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2172	sigaction (w->signum, &sa, 0);	2521	sigaction (w->signum, &sa, 0);
2173	#endif	2522	#endif
2174	}	2523	}
		2524
		2525	EV_FREQUENT_CHECK;
2175	}	2526	}
2176		2527
2177	void noinline	2528	void noinline
2178	ev_signal_stop (EV_P_ ev_signal *w)	2529	ev_signal_stop (EV_P_ ev_signal *w)
2179	{	2530	{
2180	clear_pending (EV_A_ (W)w);	2531	clear_pending (EV_A_ (W)w);
2181	if (expect_false (!ev_is_active (w)))	2532	if (expect_false (!ev_is_active (w)))
2182	return;	2533	return;
2183		2534
		2535	EV_FREQUENT_CHECK;
		2536
2184	wlist_del (&signals [w->signum - 1].head, (WL)w);	2537	wlist_del (&signals [w->signum - 1].head, (WL)w);
2185	ev_stop (EV_A_ (W)w);	2538	ev_stop (EV_A_ (W)w);
2186		2539
2187	if (!signals [w->signum - 1].head)	2540	if (!signals [w->signum - 1].head)
2188	signal (w->signum, SIG_DFL);	2541	signal (w->signum, SIG_DFL);
		2542
		2543	EV_FREQUENT_CHECK;
2189	}	2544	}
2190		2545
2191	void	2546	void
2192	ev_child_start (EV_P_ ev_child *w)	2547	ev_child_start (EV_P_ ev_child *w)
2193	{	2548	{
2194	#if EV_MULTIPLICITY	2549	#if EV_MULTIPLICITY
2195	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2550	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2196	#endif	2551	#endif
2197	if (expect_false (ev_is_active (w)))	2552	if (expect_false (ev_is_active (w)))
2198	return;	2553	return;
2199		2554
		2555	EV_FREQUENT_CHECK;
		2556
2200	ev_start (EV_A_ (W)w, 1);	2557	ev_start (EV_A_ (W)w, 1);
2201	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2558	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2559
		2560	EV_FREQUENT_CHECK;
2202	}	2561	}
2203		2562
2204	void	2563	void
2205	ev_child_stop (EV_P_ ev_child *w)	2564	ev_child_stop (EV_P_ ev_child *w)
2206	{	2565	{
2207	clear_pending (EV_A_ (W)w);	2566	clear_pending (EV_A_ (W)w);
2208	if (expect_false (!ev_is_active (w)))	2567	if (expect_false (!ev_is_active (w)))
2209	return;	2568	return;
2210		2569
		2570	EV_FREQUENT_CHECK;
		2571
2211	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2572	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2212	ev_stop (EV_A_ (W)w);	2573	ev_stop (EV_A_ (W)w);
		2574
		2575	EV_FREQUENT_CHECK;
2213	}	2576	}
2214		2577
2215	#if EV_STAT_ENABLE	2578	#if EV_STAT_ENABLE
2216		2579
2217	# ifdef _WIN32	2580	# ifdef _WIN32
2218	# undef lstat	2581	# undef lstat
2219	# define lstat(a,b) _stati64 (a,b)	2582	# define lstat(a,b) _stati64 (a,b)
2220	# endif	2583	# endif
2221		2584
2222	#define DEF_STAT_INTERVAL 5.0074891	2585	#define DEF_STAT_INTERVAL 5.0074891
		2586	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2223	#define MIN_STAT_INTERVAL 0.1074891	2587	#define MIN_STAT_INTERVAL 0.1074891
2224		2588
2225	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2589	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2226		2590
2227	#if EV_USE_INOTIFY	2591	#if EV_USE_INOTIFY
2228	# define EV_INOTIFY_BUFSIZE 8192	2592	# define EV_INOTIFY_BUFSIZE 8192
…		…
2232	{	2596	{
2233	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);	2597	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);
2234		2598
2235	if (w->wd < 0)	2599	if (w->wd < 0)
2236	{	2600	{
		2601	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2237	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2602	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2238		2603
2239	/* monitor some parent directory for speedup hints */	2604	/* monitor some parent directory for speedup hints */
2240	/* note that exceeding the hardcoded limit is not a correctness issue, */	2605	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2241	/* but an efficiency issue only */	2606	/* but an efficiency issue only */
2242	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2607	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2243	{	2608	{
2244	char path [4096];	2609	char path [4096];
2245	strcpy (path, w->path);	2610	strcpy (path, w->path);
…		…
2249	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2614	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2250	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2615	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2251		2616
2252	char *pend = strrchr (path, '/');	2617	char *pend = strrchr (path, '/');
2253		2618
2254	if (!pend)	2619	if (!pend || pend == path)
2255	break; /* whoops, no '/', complain to your admin */	2620	break;
2256		2621
2257	*pend = 0;	2622	*pend = 0;
2258	w->wd = inotify_add_watch (fs_fd, path, mask);	2623	w->wd = inotify_add_watch (fs_fd, path, mask);
2259	}	2624	}
2260	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2625	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2261	}	2626	}
2262	}	2627	}
2263	else
2264	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2265		2628
2266	if (w->wd >= 0)	2629	if (w->wd >= 0)
		2630	{
2267	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2631	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2632
		2633	/* now local changes will be tracked by inotify, but remote changes won't */
		2634	/* unless the filesystem it known to be local, we therefore still poll */
		2635	/* also do poll on <2.6.25, but with normal frequency */
		2636	struct statfs sfs;
		2637
		2638	if (fs_2625 && !statfs (w->path, &sfs))
		2639	if (sfs.f_type == 0x1373 /* devfs */
		2640	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2641	|| sfs.f_type == 0x3153464a /* jfs */
		2642	|| sfs.f_type == 0x52654973 /* reiser3 */
		2643	|| sfs.f_type == 0x01021994 /* tempfs */
		2644	|| sfs.f_type == 0x58465342 /* xfs */)
		2645	return;
		2646
		2647	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2648	ev_timer_again (EV_A_ &w->timer);
		2649	}
2268	}	2650	}
2269		2651
2270	static void noinline	2652	static void noinline
2271	infy_del (EV_P_ ev_stat *w)	2653	infy_del (EV_P_ ev_stat *w)
2272	{	2654	{
…		…
2286		2668
2287	static void noinline	2669	static void noinline
2288	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2670	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2289	{	2671	{
2290	if (slot < 0)	2672	if (slot < 0)
2291	/* overflow, need to check for all hahs slots */	2673	/* overflow, need to check for all hash slots */
2292	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2674	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2293	infy_wd (EV_A_ slot, wd, ev);	2675	infy_wd (EV_A_ slot, wd, ev);
2294	else	2676	else
2295	{	2677	{
2296	WL w_;	2678	WL w_;
…		…
2302		2684
2303	if (w->wd == wd || wd == -1)	2685	if (w->wd == wd || wd == -1)
2304	{	2686	{
2305	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2687	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2306	{	2688	{
		2689	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2307	w->wd = -1;	2690	w->wd = -1;
2308	infy_add (EV_A_ w); /* re-add, no matter what */	2691	infy_add (EV_A_ w); /* re-add, no matter what */
2309	}	2692	}
2310		2693
2311	stat_timer_cb (EV_A_ &w->timer, 0);	2694	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2324		2707
2325	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2708	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2326	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2709	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2327	}	2710	}
2328		2711
2329	void inline_size	2712	inline_size void
		2713	check_2625 (EV_P)
		2714	{
		2715	/* kernels < 2.6.25 are borked
		2716	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2717	*/
		2718	struct utsname buf;
		2719	int major, minor, micro;
		2720
		2721	if (uname (&buf))
		2722	return;
		2723
		2724	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2725	return;
		2726
		2727	if (major < 2
		2728	|| (major == 2 && minor < 6)
		2729	|| (major == 2 && minor == 6 && micro < 25))
		2730	return;
		2731
		2732	fs_2625 = 1;
		2733	}
		2734
		2735	inline_size void
2330	infy_init (EV_P)	2736	infy_init (EV_P)
2331	{	2737	{
2332	if (fs_fd != -2)	2738	if (fs_fd != -2)
2333	return;	2739	return;
		2740
		2741	fs_fd = -1;
		2742
		2743	check_2625 (EV_A);
2334		2744
2335	fs_fd = inotify_init ();	2745	fs_fd = inotify_init ();
2336		2746
2337	if (fs_fd >= 0)	2747	if (fs_fd >= 0)
2338	{	2748	{
…		…
2340	ev_set_priority (&fs_w, EV_MAXPRI);	2750	ev_set_priority (&fs_w, EV_MAXPRI);
2341	ev_io_start (EV_A_ &fs_w);	2751	ev_io_start (EV_A_ &fs_w);
2342	}	2752	}
2343	}	2753	}
2344		2754
2345	void inline_size	2755	inline_size void
2346	infy_fork (EV_P)	2756	infy_fork (EV_P)
2347	{	2757	{
2348	int slot;	2758	int slot;
2349		2759
2350	if (fs_fd < 0)	2760	if (fs_fd < 0)
…		…
2366	w->wd = -1;	2776	w->wd = -1;
2367		2777
2368	if (fs_fd >= 0)	2778	if (fs_fd >= 0)
2369	infy_add (EV_A_ w); /* re-add, no matter what */	2779	infy_add (EV_A_ w); /* re-add, no matter what */
2370	else	2780	else
2371	ev_timer_start (EV_A_ &w->timer);	2781	ev_timer_again (EV_A_ &w->timer);
2372	}	2782	}
2373
2374	}	2783	}
2375	}	2784	}
2376		2785
		2786	#endif
		2787
		2788	#ifdef _WIN32
		2789	# define EV_LSTAT(p,b) _stati64 (p, b)
		2790	#else
		2791	# define EV_LSTAT(p,b) lstat (p, b)
2377	#endif	2792	#endif
2378		2793
2379	void	2794	void
2380	ev_stat_stat (EV_P_ ev_stat *w)	2795	ev_stat_stat (EV_P_ ev_stat *w)
2381	{	2796	{
…		…
2408	|| w->prev.st_atime != w->attr.st_atime	2823	|| w->prev.st_atime != w->attr.st_atime
2409	|| w->prev.st_mtime != w->attr.st_mtime	2824	|| w->prev.st_mtime != w->attr.st_mtime
2410	|| w->prev.st_ctime != w->attr.st_ctime	2825	|| w->prev.st_ctime != w->attr.st_ctime
2411	) {	2826	) {
2412	#if EV_USE_INOTIFY	2827	#if EV_USE_INOTIFY
		2828	if (fs_fd >= 0)
		2829	{
2413	infy_del (EV_A_ w);	2830	infy_del (EV_A_ w);
2414	infy_add (EV_A_ w);	2831	infy_add (EV_A_ w);
2415	ev_stat_stat (EV_A_ w); /* avoid race... */	2832	ev_stat_stat (EV_A_ w); /* avoid race... */
		2833	}
2416	#endif	2834	#endif
2417		2835
2418	ev_feed_event (EV_A_ w, EV_STAT);	2836	ev_feed_event (EV_A_ w, EV_STAT);
2419	}	2837	}
2420	}	2838	}
…		…
2423	ev_stat_start (EV_P_ ev_stat *w)	2841	ev_stat_start (EV_P_ ev_stat *w)
2424	{	2842	{
2425	if (expect_false (ev_is_active (w)))	2843	if (expect_false (ev_is_active (w)))
2426	return;	2844	return;
2427		2845
2428	/* since we use memcmp, we need to clear any padding data etc. */
2429	memset (&w->prev, 0, sizeof (ev_statdata));
2430	memset (&w->attr, 0, sizeof (ev_statdata));
2431
2432	ev_stat_stat (EV_A_ w);	2846	ev_stat_stat (EV_A_ w);
2433		2847
		2848	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2434	if (w->interval < MIN_STAT_INTERVAL)	2849	w->interval = MIN_STAT_INTERVAL;
2435	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2436		2850
2437	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2851	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2438	ev_set_priority (&w->timer, ev_priority (w));	2852	ev_set_priority (&w->timer, ev_priority (w));
2439		2853
2440	#if EV_USE_INOTIFY	2854	#if EV_USE_INOTIFY
2441	infy_init (EV_A);	2855	infy_init (EV_A);
2442		2856
2443	if (fs_fd >= 0)	2857	if (fs_fd >= 0)
2444	infy_add (EV_A_ w);	2858	infy_add (EV_A_ w);
2445	else	2859	else
2446	#endif	2860	#endif
2447	ev_timer_start (EV_A_ &w->timer);	2861	ev_timer_again (EV_A_ &w->timer);
2448		2862
2449	ev_start (EV_A_ (W)w, 1);	2863	ev_start (EV_A_ (W)w, 1);
		2864
		2865	EV_FREQUENT_CHECK;
2450	}	2866	}
2451		2867
2452	void	2868	void
2453	ev_stat_stop (EV_P_ ev_stat *w)	2869	ev_stat_stop (EV_P_ ev_stat *w)
2454	{	2870	{
2455	clear_pending (EV_A_ (W)w);	2871	clear_pending (EV_A_ (W)w);
2456	if (expect_false (!ev_is_active (w)))	2872	if (expect_false (!ev_is_active (w)))
2457	return;	2873	return;
2458		2874
		2875	EV_FREQUENT_CHECK;
		2876
2459	#if EV_USE_INOTIFY	2877	#if EV_USE_INOTIFY
2460	infy_del (EV_A_ w);	2878	infy_del (EV_A_ w);
2461	#endif	2879	#endif
2462	ev_timer_stop (EV_A_ &w->timer);	2880	ev_timer_stop (EV_A_ &w->timer);
2463		2881
2464	ev_stop (EV_A_ (W)w);	2882	ev_stop (EV_A_ (W)w);
		2883
		2884	EV_FREQUENT_CHECK;
2465	}	2885	}
2466	#endif	2886	#endif
2467		2887
2468	#if EV_IDLE_ENABLE	2888	#if EV_IDLE_ENABLE
2469	void	2889	void
…		…
2471	{	2891	{
2472	if (expect_false (ev_is_active (w)))	2892	if (expect_false (ev_is_active (w)))
2473	return;	2893	return;
2474		2894
2475	pri_adjust (EV_A_ (W)w);	2895	pri_adjust (EV_A_ (W)w);
		2896
		2897	EV_FREQUENT_CHECK;
2476		2898
2477	{	2899	{
2478	int active = ++idlecnt [ABSPRI (w)];	2900	int active = ++idlecnt [ABSPRI (w)];
2479		2901
2480	++idleall;	2902	++idleall;
2481	ev_start (EV_A_ (W)w, active);	2903	ev_start (EV_A_ (W)w, active);
2482		2904
2483	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	2905	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2484	idles [ABSPRI (w)][active - 1] = w;	2906	idles [ABSPRI (w)][active - 1] = w;
2485	}	2907	}
		2908
		2909	EV_FREQUENT_CHECK;
2486	}	2910	}
2487		2911
2488	void	2912	void
2489	ev_idle_stop (EV_P_ ev_idle *w)	2913	ev_idle_stop (EV_P_ ev_idle *w)
2490	{	2914	{
2491	clear_pending (EV_A_ (W)w);	2915	clear_pending (EV_A_ (W)w);
2492	if (expect_false (!ev_is_active (w)))	2916	if (expect_false (!ev_is_active (w)))
2493	return;	2917	return;
2494		2918
		2919	EV_FREQUENT_CHECK;
		2920
2495	{	2921	{
2496	int active = ev_active (w);	2922	int active = ev_active (w);
2497		2923
2498	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	2924	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2499	ev_active (idles [ABSPRI (w)][active - 1]) = active;	2925	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2500		2926
2501	ev_stop (EV_A_ (W)w);	2927	ev_stop (EV_A_ (W)w);
2502	--idleall;	2928	--idleall;
2503	}	2929	}
		2930
		2931	EV_FREQUENT_CHECK;
2504	}	2932	}
2505	#endif	2933	#endif
2506		2934
2507	void	2935	void
2508	ev_prepare_start (EV_P_ ev_prepare *w)	2936	ev_prepare_start (EV_P_ ev_prepare *w)
2509	{	2937	{
2510	if (expect_false (ev_is_active (w)))	2938	if (expect_false (ev_is_active (w)))
2511	return;	2939	return;
		2940
		2941	EV_FREQUENT_CHECK;
2512		2942
2513	ev_start (EV_A_ (W)w, ++preparecnt);	2943	ev_start (EV_A_ (W)w, ++preparecnt);
2514	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	2944	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2515	prepares [preparecnt - 1] = w;	2945	prepares [preparecnt - 1] = w;
		2946
		2947	EV_FREQUENT_CHECK;
2516	}	2948	}
2517		2949
2518	void	2950	void
2519	ev_prepare_stop (EV_P_ ev_prepare *w)	2951	ev_prepare_stop (EV_P_ ev_prepare *w)
2520	{	2952	{
2521	clear_pending (EV_A_ (W)w);	2953	clear_pending (EV_A_ (W)w);
2522	if (expect_false (!ev_is_active (w)))	2954	if (expect_false (!ev_is_active (w)))
2523	return;	2955	return;
2524		2956
		2957	EV_FREQUENT_CHECK;
		2958
2525	{	2959	{
2526	int active = ev_active (w);	2960	int active = ev_active (w);
2527		2961
2528	prepares [active - 1] = prepares [--preparecnt];	2962	prepares [active - 1] = prepares [--preparecnt];
2529	ev_active (prepares [active - 1]) = active;	2963	ev_active (prepares [active - 1]) = active;
2530	}	2964	}
2531		2965
2532	ev_stop (EV_A_ (W)w);	2966	ev_stop (EV_A_ (W)w);
		2967
		2968	EV_FREQUENT_CHECK;
2533	}	2969	}
2534		2970
2535	void	2971	void
2536	ev_check_start (EV_P_ ev_check *w)	2972	ev_check_start (EV_P_ ev_check *w)
2537	{	2973	{
2538	if (expect_false (ev_is_active (w)))	2974	if (expect_false (ev_is_active (w)))
2539	return;	2975	return;
		2976
		2977	EV_FREQUENT_CHECK;
2540		2978
2541	ev_start (EV_A_ (W)w, ++checkcnt);	2979	ev_start (EV_A_ (W)w, ++checkcnt);
2542	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	2980	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2543	checks [checkcnt - 1] = w;	2981	checks [checkcnt - 1] = w;
		2982
		2983	EV_FREQUENT_CHECK;
2544	}	2984	}
2545		2985
2546	void	2986	void
2547	ev_check_stop (EV_P_ ev_check *w)	2987	ev_check_stop (EV_P_ ev_check *w)
2548	{	2988	{
2549	clear_pending (EV_A_ (W)w);	2989	clear_pending (EV_A_ (W)w);
2550	if (expect_false (!ev_is_active (w)))	2990	if (expect_false (!ev_is_active (w)))
2551	return;	2991	return;
2552		2992
		2993	EV_FREQUENT_CHECK;
		2994
2553	{	2995	{
2554	int active = ev_active (w);	2996	int active = ev_active (w);
2555		2997
2556	checks [active - 1] = checks [--checkcnt];	2998	checks [active - 1] = checks [--checkcnt];
2557	ev_active (checks [active - 1]) = active;	2999	ev_active (checks [active - 1]) = active;
2558	}	3000	}
2559		3001
2560	ev_stop (EV_A_ (W)w);	3002	ev_stop (EV_A_ (W)w);
		3003
		3004	EV_FREQUENT_CHECK;
2561	}	3005	}
2562		3006
2563	#if EV_EMBED_ENABLE	3007	#if EV_EMBED_ENABLE
2564	void noinline	3008	void noinline
2565	ev_embed_sweep (EV_P_ ev_embed *w)	3009	ev_embed_sweep (EV_P_ ev_embed *w)
…		…
2592	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3036	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2593	}	3037	}
2594	}	3038	}
2595	}	3039	}
2596		3040
		3041	static void
		3042	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3043	{
		3044	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3045
		3046	ev_embed_stop (EV_A_ w);
		3047
		3048	{
		3049	struct ev_loop *loop = w->other;
		3050
		3051	ev_loop_fork (EV_A);
		3052	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3053	}
		3054
		3055	ev_embed_start (EV_A_ w);
		3056	}
		3057
2597	#if 0	3058	#if 0
2598	static void	3059	static void
2599	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3060	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2600	{	3061	{
2601	ev_idle_stop (EV_A_ idle);	3062	ev_idle_stop (EV_A_ idle);
…		…
2608	if (expect_false (ev_is_active (w)))	3069	if (expect_false (ev_is_active (w)))
2609	return;	3070	return;
2610		3071
2611	{	3072	{
2612	struct ev_loop *loop = w->other;	3073	struct ev_loop *loop = w->other;
2613	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3074	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2614	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3075	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2615	}	3076	}
		3077
		3078	EV_FREQUENT_CHECK;
2616		3079
2617	ev_set_priority (&w->io, ev_priority (w));	3080	ev_set_priority (&w->io, ev_priority (w));
2618	ev_io_start (EV_A_ &w->io);	3081	ev_io_start (EV_A_ &w->io);
2619		3082
2620	ev_prepare_init (&w->prepare, embed_prepare_cb);	3083	ev_prepare_init (&w->prepare, embed_prepare_cb);
2621	ev_set_priority (&w->prepare, EV_MINPRI);	3084	ev_set_priority (&w->prepare, EV_MINPRI);
2622	ev_prepare_start (EV_A_ &w->prepare);	3085	ev_prepare_start (EV_A_ &w->prepare);
2623		3086
		3087	ev_fork_init (&w->fork, embed_fork_cb);
		3088	ev_fork_start (EV_A_ &w->fork);
		3089
2624	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3090	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2625		3091
2626	ev_start (EV_A_ (W)w, 1);	3092	ev_start (EV_A_ (W)w, 1);
		3093
		3094	EV_FREQUENT_CHECK;
2627	}	3095	}
2628		3096
2629	void	3097	void
2630	ev_embed_stop (EV_P_ ev_embed *w)	3098	ev_embed_stop (EV_P_ ev_embed *w)
2631	{	3099	{
2632	clear_pending (EV_A_ (W)w);	3100	clear_pending (EV_A_ (W)w);
2633	if (expect_false (!ev_is_active (w)))	3101	if (expect_false (!ev_is_active (w)))
2634	return;	3102	return;
2635		3103
		3104	EV_FREQUENT_CHECK;
		3105
2636	ev_io_stop (EV_A_ &w->io);	3106	ev_io_stop (EV_A_ &w->io);
2637	ev_prepare_stop (EV_A_ &w->prepare);	3107	ev_prepare_stop (EV_A_ &w->prepare);
		3108	ev_fork_stop (EV_A_ &w->fork);
2638		3109
2639	ev_stop (EV_A_ (W)w);	3110	EV_FREQUENT_CHECK;
2640	}	3111	}
2641	#endif	3112	#endif
2642		3113
2643	#if EV_FORK_ENABLE	3114	#if EV_FORK_ENABLE
2644	void	3115	void
2645	ev_fork_start (EV_P_ ev_fork *w)	3116	ev_fork_start (EV_P_ ev_fork *w)
2646	{	3117	{
2647	if (expect_false (ev_is_active (w)))	3118	if (expect_false (ev_is_active (w)))
2648	return;	3119	return;
		3120
		3121	EV_FREQUENT_CHECK;
2649		3122
2650	ev_start (EV_A_ (W)w, ++forkcnt);	3123	ev_start (EV_A_ (W)w, ++forkcnt);
2651	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3124	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2652	forks [forkcnt - 1] = w;	3125	forks [forkcnt - 1] = w;
		3126
		3127	EV_FREQUENT_CHECK;
2653	}	3128	}
2654		3129
2655	void	3130	void
2656	ev_fork_stop (EV_P_ ev_fork *w)	3131	ev_fork_stop (EV_P_ ev_fork *w)
2657	{	3132	{
2658	clear_pending (EV_A_ (W)w);	3133	clear_pending (EV_A_ (W)w);
2659	if (expect_false (!ev_is_active (w)))	3134	if (expect_false (!ev_is_active (w)))
2660	return;	3135	return;
2661		3136
		3137	EV_FREQUENT_CHECK;
		3138
2662	{	3139	{
2663	int active = ev_active (w);	3140	int active = ev_active (w);
2664		3141
2665	forks [active - 1] = forks [--forkcnt];	3142	forks [active - 1] = forks [--forkcnt];
2666	ev_active (forks [active - 1]) = active;	3143	ev_active (forks [active - 1]) = active;
2667	}	3144	}
2668		3145
2669	ev_stop (EV_A_ (W)w);	3146	ev_stop (EV_A_ (W)w);
		3147
		3148	EV_FREQUENT_CHECK;
2670	}	3149	}
2671	#endif	3150	#endif
2672		3151
2673	#if EV_ASYNC_ENABLE	3152	#if EV_ASYNC_ENABLE
2674	void	3153	void
…		…
2676	{	3155	{
2677	if (expect_false (ev_is_active (w)))	3156	if (expect_false (ev_is_active (w)))
2678	return;	3157	return;
2679		3158
2680	evpipe_init (EV_A);	3159	evpipe_init (EV_A);
		3160
		3161	EV_FREQUENT_CHECK;
2681		3162
2682	ev_start (EV_A_ (W)w, ++asynccnt);	3163	ev_start (EV_A_ (W)w, ++asynccnt);
2683	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);	3164	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2684	asyncs [asynccnt - 1] = w;	3165	asyncs [asynccnt - 1] = w;
		3166
		3167	EV_FREQUENT_CHECK;
2685	}	3168	}
2686		3169
2687	void	3170	void
2688	ev_async_stop (EV_P_ ev_async *w)	3171	ev_async_stop (EV_P_ ev_async *w)
2689	{	3172	{
2690	clear_pending (EV_A_ (W)w);	3173	clear_pending (EV_A_ (W)w);
2691	if (expect_false (!ev_is_active (w)))	3174	if (expect_false (!ev_is_active (w)))
2692	return;	3175	return;
2693		3176
		3177	EV_FREQUENT_CHECK;
		3178
2694	{	3179	{
2695	int active = ev_active (w);	3180	int active = ev_active (w);
2696		3181
2697	asyncs [active - 1] = asyncs [--asynccnt];	3182	asyncs [active - 1] = asyncs [--asynccnt];
2698	ev_active (asyncs [active - 1]) = active;	3183	ev_active (asyncs [active - 1]) = active;
2699	}	3184	}
2700		3185
2701	ev_stop (EV_A_ (W)w);	3186	ev_stop (EV_A_ (W)w);
		3187
		3188	EV_FREQUENT_CHECK;
2702	}	3189	}
2703		3190
2704	void	3191	void
2705	ev_async_send (EV_P_ ev_async *w)	3192	ev_async_send (EV_P_ ev_async *w)
2706	{	3193	{
…		…
2723	once_cb (EV_P_ struct ev_once *once, int revents)	3210	once_cb (EV_P_ struct ev_once *once, int revents)
2724	{	3211	{
2725	void (*cb)(int revents, void *arg) = once->cb;	3212	void (*cb)(int revents, void *arg) = once->cb;
2726	void *arg = once->arg;	3213	void *arg = once->arg;
2727		3214
2728	ev_io_stop (EV_A_ &once->io);	3215	ev_io_stop (EV_A_ &once->io);
2729	ev_timer_stop (EV_A_ &once->to);	3216	ev_timer_stop (EV_A_ &once->to);
2730	ev_free (once);	3217	ev_free (once);
2731		3218
2732	cb (revents, arg);	3219	cb (revents, arg);
2733	}	3220	}
2734		3221
2735	static void	3222	static void
2736	once_cb_io (EV_P_ ev_io *w, int revents)	3223	once_cb_io (EV_P_ ev_io *w, int revents)
2737	{	3224	{
2738	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3225	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3226
		3227	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2739	}	3228	}
2740		3229
2741	static void	3230	static void
2742	once_cb_to (EV_P_ ev_timer *w, int revents)	3231	once_cb_to (EV_P_ ev_timer *w, int revents)
2743	{	3232	{
2744	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3233	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3234
		3235	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2745	}	3236	}
2746		3237
2747	void	3238	void
2748	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3239	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2749	{	3240	{
…		…
2771	ev_timer_set (&once->to, timeout, 0.);	3262	ev_timer_set (&once->to, timeout, 0.);
2772	ev_timer_start (EV_A_ &once->to);	3263	ev_timer_start (EV_A_ &once->to);
2773	}	3264	}
2774	}	3265	}
2775		3266
		3267	/*****************************************************************************/
		3268
		3269	#if EV_WALK_ENABLE
		3270	void
		3271	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3272	{
		3273	int i, j;
		3274	ev_watcher_list *wl, *wn;
		3275
		3276	if (types & (EV_IO | EV_EMBED))
		3277	for (i = 0; i < anfdmax; ++i)
		3278	for (wl = anfds [i].head; wl; )
		3279	{
		3280	wn = wl->next;
		3281
		3282	#if EV_EMBED_ENABLE
		3283	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3284	{
		3285	if (types & EV_EMBED)
		3286	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3287	}
		3288	else
		3289	#endif
		3290	#if EV_USE_INOTIFY
		3291	if (ev_cb ((ev_io *)wl) == infy_cb)
		3292	;
		3293	else
		3294	#endif
		3295	if ((ev_io *)wl != &pipe_w)
		3296	if (types & EV_IO)
		3297	cb (EV_A_ EV_IO, wl);
		3298
		3299	wl = wn;
		3300	}
		3301
		3302	if (types & (EV_TIMER | EV_STAT))
		3303	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3304	#if EV_STAT_ENABLE
		3305	/*TODO: timer is not always active*/
		3306	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3307	{
		3308	if (types & EV_STAT)
		3309	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3310	}
		3311	else
		3312	#endif
		3313	if (types & EV_TIMER)
		3314	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3315
		3316	#if EV_PERIODIC_ENABLE
		3317	if (types & EV_PERIODIC)
		3318	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3319	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3320	#endif
		3321
		3322	#if EV_IDLE_ENABLE
		3323	if (types & EV_IDLE)
		3324	for (j = NUMPRI; i--; )
		3325	for (i = idlecnt [j]; i--; )
		3326	cb (EV_A_ EV_IDLE, idles [j][i]);
		3327	#endif
		3328
		3329	#if EV_FORK_ENABLE
		3330	if (types & EV_FORK)
		3331	for (i = forkcnt; i--; )
		3332	if (ev_cb (forks [i]) != embed_fork_cb)
		3333	cb (EV_A_ EV_FORK, forks [i]);
		3334	#endif
		3335
		3336	#if EV_ASYNC_ENABLE
		3337	if (types & EV_ASYNC)
		3338	for (i = asynccnt; i--; )
		3339	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3340	#endif
		3341
		3342	if (types & EV_PREPARE)
		3343	for (i = preparecnt; i--; )
		3344	#if EV_EMBED_ENABLE
		3345	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3346	#endif
		3347	cb (EV_A_ EV_PREPARE, prepares [i]);
		3348
		3349	if (types & EV_CHECK)
		3350	for (i = checkcnt; i--; )
		3351	cb (EV_A_ EV_CHECK, checks [i]);
		3352
		3353	if (types & EV_SIGNAL)
		3354	for (i = 0; i < signalmax; ++i)
		3355	for (wl = signals [i].head; wl; )
		3356	{
		3357	wn = wl->next;
		3358	cb (EV_A_ EV_SIGNAL, wl);
		3359	wl = wn;
		3360	}
		3361
		3362	if (types & EV_CHILD)
		3363	for (i = EV_PID_HASHSIZE; i--; )
		3364	for (wl = childs [i]; wl; )
		3365	{
		3366	wn = wl->next;
		3367	cb (EV_A_ EV_CHILD, wl);
		3368	wl = wn;
		3369	}
		3370	/* EV_STAT 0x00001000 /* stat data changed */
		3371	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3372	}
		3373	#endif
		3374
2776	#if EV_MULTIPLICITY	3375	#if EV_MULTIPLICITY
2777	#include "ev_wrap.h"	3376	#include "ev_wrap.h"
2778	#endif	3377	#endif
2779		3378
2780	#ifdef __cplusplus	3379	#ifdef __cplusplus

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