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Comparing libev/ev.c (file contents):
Revision 1.254 by root, Wed Jun 4 20:26:55 2008 UTC vs.
Revision 1.291 by root, Mon Jun 29 04:44:18 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
…		…
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 */
		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
167		190
168	#ifndef EV_USE_MONOTONIC	191	#ifndef EV_USE_MONOTONIC
169	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0	192	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
170	# define EV_USE_MONOTONIC 1	193	# define EV_USE_MONOTONIC 1
171	# else	194	# else
172	# define EV_USE_MONOTONIC 0	195	# define EV_USE_MONOTONIC 0
173	# endif	196	# endif
174	#endif	197	#endif
175		198
176	#ifndef EV_USE_REALTIME	199	#ifndef EV_USE_REALTIME
177	# define EV_USE_REALTIME 0	200	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
178	#endif	201	#endif
179		202
180	#ifndef EV_USE_NANOSLEEP	203	#ifndef EV_USE_NANOSLEEP
181	# if _POSIX_C_SOURCE >= 199309L	204	# if _POSIX_C_SOURCE >= 199309L
182	# define EV_USE_NANOSLEEP 1	205	# define EV_USE_NANOSLEEP 1
…		…
261		284
262	#ifndef EV_HEAP_CACHE_AT	285	#ifndef EV_HEAP_CACHE_AT
263	# define EV_HEAP_CACHE_AT !EV_MINIMAL	286	# define EV_HEAP_CACHE_AT !EV_MINIMAL
264	#endif	287	#endif
265		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
266	/* 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 */
267		304
268	#ifndef CLOCK_MONOTONIC	305	#ifndef CLOCK_MONOTONIC
269	# undef EV_USE_MONOTONIC	306	# undef EV_USE_MONOTONIC
270	# define EV_USE_MONOTONIC 0	307	# define EV_USE_MONOTONIC 0
…		…
285	# include <sys/select.h>	322	# include <sys/select.h>
286	# endif	323	# endif
287	#endif	324	#endif
288		325
289	#if EV_USE_INOTIFY	326	#if EV_USE_INOTIFY
		327	# include <sys/utsname.h>
		328	# include <sys/statfs.h>
290	# 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
291	#endif	335	#endif
292		336
293	#if EV_SELECT_IS_WINSOCKET	337	#if EV_SELECT_IS_WINSOCKET
294	# include <winsock.h>	338	# include <winsock.h>
295	#endif	339	#endif
…		…
360	typedef ev_watcher_time *WT;	404	typedef ev_watcher_time *WT;
361		405
362	#define ev_active(w) ((W)(w))->active	406	#define ev_active(w) ((W)(w))->active
363	#define ev_at(w) ((WT)(w))->at	407	#define ev_at(w) ((WT)(w))->at
364		408
365	#if EV_USE_MONOTONIC	409	#if EV_USE_REALTIME
366	/* 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 */
367	/* 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
368	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? */
369	#endif	417	#endif
370		418
371	#ifdef _WIN32	419	#ifdef _WIN32
372	# include "ev_win32.c"	420	# include "ev_win32.c"
…		…
381	{	429	{
382	syserr_cb = cb;	430	syserr_cb = cb;
383	}	431	}
384		432
385	static void noinline	433	static void noinline
386	syserr (const char *msg)	434	ev_syserr (const char *msg)
387	{	435	{
388	if (!msg)	436	if (!msg)
389	msg = "(libev) system error";	437	msg = "(libev) system error";
390		438
391	if (syserr_cb)	439	if (syserr_cb)
…		…
437	#define ev_malloc(size) ev_realloc (0, (size))	485	#define ev_malloc(size) ev_realloc (0, (size))
438	#define ev_free(ptr) ev_realloc ((ptr), 0)	486	#define ev_free(ptr) ev_realloc ((ptr), 0)
439		487
440	/*****************************************************************************/	488	/*****************************************************************************/
441		489
		490	/* file descriptor info structure */
442	typedef struct	491	typedef struct
443	{	492	{
444	WL head;	493	WL head;
445	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 */
446	unsigned char reify;	497	unsigned char unused;
		498	#if EV_USE_EPOLL
		499	unsigned int egen; /* generation counter to counter epoll bugs */
		500	#endif
447	#if EV_SELECT_IS_WINSOCKET	501	#if EV_SELECT_IS_WINSOCKET
448	SOCKET handle;	502	SOCKET handle;
449	#endif	503	#endif
450	} ANFD;	504	} ANFD;
451		505
		506	/* stores the pending event set for a given watcher */
452	typedef struct	507	typedef struct
453	{	508	{
454	W w;	509	W w;
455	int events;	510	int events; /* the pending event set for the given watcher */
456	} ANPENDING;	511	} ANPENDING;
457		512
458	#if EV_USE_INOTIFY	513	#if EV_USE_INOTIFY
459	/* hash table entry per inotify-id */	514	/* hash table entry per inotify-id */
460	typedef struct	515	typedef struct
…		…
463	} ANFS;	518	} ANFS;
464	#endif	519	#endif
465		520
466	/* Heap Entry */	521	/* Heap Entry */
467	#if EV_HEAP_CACHE_AT	522	#if EV_HEAP_CACHE_AT
		523	/* a heap element */
468	typedef struct {	524	typedef struct {
469	ev_tstamp at;	525	ev_tstamp at;
470	WT w;	526	WT w;
471	} ANHE;	527	} ANHE;
472		528
473	#define ANHE_w(he) (he).w /* access watcher, read-write */	529	#define ANHE_w(he) (he).w /* access watcher, read-write */
474	#define ANHE_at(he) (he).at /* access cached at, read-only */	530	#define ANHE_at(he) (he).at /* access cached at, read-only */
475	#define ANHE_at_cache(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 */
476	#else	532	#else
		533	/* a heap element */
477	typedef WT ANHE;	534	typedef WT ANHE;
478		535
479	#define ANHE_w(he) (he)	536	#define ANHE_w(he) (he)
480	#define ANHE_at(he) (he)->at	537	#define ANHE_at(he) (he)->at
481	#define ANHE_at_cache(he)	538	#define ANHE_at_cache(he)
…		…
511		568
512	ev_tstamp	569	ev_tstamp
513	ev_time (void)	570	ev_time (void)
514	{	571	{
515	#if EV_USE_REALTIME	572	#if EV_USE_REALTIME
		573	if (expect_true (have_realtime))
		574	{
516	struct timespec ts;	575	struct timespec ts;
517	clock_gettime (CLOCK_REALTIME, &ts);	576	clock_gettime (CLOCK_REALTIME, &ts);
518	return ts.tv_sec + ts.tv_nsec * 1e-9;	577	return ts.tv_sec + ts.tv_nsec * 1e-9;
519	#else	578	}
		579	#endif
		580
520	struct timeval tv;	581	struct timeval tv;
521	gettimeofday (&tv, 0);	582	gettimeofday (&tv, 0);
522	return tv.tv_sec + tv.tv_usec * 1e-6;	583	return tv.tv_sec + tv.tv_usec * 1e-6;
523	#endif
524	}	584	}
525		585
526	ev_tstamp inline_size	586	inline_size ev_tstamp
527	get_clock (void)	587	get_clock (void)
528	{	588	{
529	#if EV_USE_MONOTONIC	589	#if EV_USE_MONOTONIC
530	if (expect_true (have_monotonic))	590	if (expect_true (have_monotonic))
531	{	591	{
…		…
564	struct timeval tv;	624	struct timeval tv;
565		625
566	tv.tv_sec = (time_t)delay;	626	tv.tv_sec = (time_t)delay;
567	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	627	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
568		628
		629	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		630	/* somehting nto guaranteed by newer posix versions, but guaranteed */
		631	/* by older ones */
569	select (0, 0, 0, 0, &tv);	632	select (0, 0, 0, 0, &tv);
570	#endif	633	#endif
571	}	634	}
572	}	635	}
573		636
574	/*****************************************************************************/	637	/*****************************************************************************/
575		638
576	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	639	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
577		640
578	int inline_size	641	/* find a suitable new size for the given array, */
		642	/* hopefully by rounding to a ncie-to-malloc size */
		643	inline_size int
579	array_nextsize (int elem, int cur, int cnt)	644	array_nextsize (int elem, int cur, int cnt)
580	{	645	{
581	int ncur = cur + 1;	646	int ncur = cur + 1;
582		647
583	do	648	do
…		…
600	array_realloc (int elem, void *base, int *cur, int cnt)	665	array_realloc (int elem, void *base, int *cur, int cnt)
601	{	666	{
602	*cur = array_nextsize (elem, *cur, cnt);	667	*cur = array_nextsize (elem, *cur, cnt);
603	return ev_realloc (base, elem * *cur);	668	return ev_realloc (base, elem * *cur);
604	}	669	}
		670
		671	#define array_init_zero(base,count) \
		672	memset ((void *)(base), 0, sizeof (*(base)) * (count))
605		673
606	#define array_needsize(type,base,cur,cnt,init) \	674	#define array_needsize(type,base,cur,cnt,init) \
607	if (expect_false ((cnt) > (cur))) \	675	if (expect_false ((cnt) > (cur))) \
608	{ \	676	{ \
609	int ocur_ = (cur); \	677	int ocur_ = (cur); \
…		…
621	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	689	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
622	}	690	}
623	#endif	691	#endif
624		692
625	#define array_free(stem, idx) \	693	#define array_free(stem, idx) \
626	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	694	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
627		695
628	/*****************************************************************************/	696	/*****************************************************************************/
		697
		698	/* dummy callback for pending events */
		699	static void noinline
		700	pendingcb (EV_P_ ev_prepare *w, int revents)
		701	{
		702	}
629		703
630	void noinline	704	void noinline
631	ev_feed_event (EV_P_ void *w, int revents)	705	ev_feed_event (EV_P_ void *w, int revents)
632	{	706	{
633	W w_ = (W)w;	707	W w_ = (W)w;
…		…
642	pendings [pri][w_->pending - 1].w = w_;	716	pendings [pri][w_->pending - 1].w = w_;
643	pendings [pri][w_->pending - 1].events = revents;	717	pendings [pri][w_->pending - 1].events = revents;
644	}	718	}
645	}	719	}
646		720
647	void inline_speed	721	inline_speed void
		722	feed_reverse (EV_P_ W w)
		723	{
		724	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		725	rfeeds [rfeedcnt++] = w;
		726	}
		727
		728	inline_size void
		729	feed_reverse_done (EV_P_ int revents)
		730	{
		731	do
		732	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		733	while (rfeedcnt);
		734	}
		735
		736	inline_speed void
648	queue_events (EV_P_ W *events, int eventcnt, int type)	737	queue_events (EV_P_ W *events, int eventcnt, int type)
649	{	738	{
650	int i;	739	int i;
651		740
652	for (i = 0; i < eventcnt; ++i)	741	for (i = 0; i < eventcnt; ++i)
653	ev_feed_event (EV_A_ events [i], type);	742	ev_feed_event (EV_A_ events [i], type);
654	}	743	}
655		744
656	/*****************************************************************************/	745	/*****************************************************************************/
657		746
658	void inline_size	747	inline_speed void
659	anfds_init (ANFD *base, int count)
660	{
661	while (count--)
662	{
663	base->head = 0;
664	base->events = EV_NONE;
665	base->reify = 0;
666
667	++base;
668	}
669	}
670
671	void inline_speed
672	fd_event (EV_P_ int fd, int revents)	748	fd_event (EV_P_ int fd, int revents)
673	{	749	{
674	ANFD *anfd = anfds + fd;	750	ANFD *anfd = anfds + fd;
675	ev_io *w;	751	ev_io *w;
676		752
…		…
688	{	764	{
689	if (fd >= 0 && fd < anfdmax)	765	if (fd >= 0 && fd < anfdmax)
690	fd_event (EV_A_ fd, revents);	766	fd_event (EV_A_ fd, revents);
691	}	767	}
692		768
693	void inline_size	769	/* make sure the external fd watch events are in-sync */
		770	/* with the kernel/libev internal state */
		771	inline_size void
694	fd_reify (EV_P)	772	fd_reify (EV_P)
695	{	773	{
696	int i;	774	int i;
697		775
698	for (i = 0; i < fdchangecnt; ++i)	776	for (i = 0; i < fdchangecnt; ++i)
…		…
713	#ifdef EV_FD_TO_WIN32_HANDLE	791	#ifdef EV_FD_TO_WIN32_HANDLE
714	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	792	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
715	#else	793	#else
716	anfd->handle = _get_osfhandle (fd);	794	anfd->handle = _get_osfhandle (fd);
717	#endif	795	#endif
718	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	796	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
719	}	797	}
720	#endif	798	#endif
721		799
722	{	800	{
723	unsigned char o_events = anfd->events;	801	unsigned char o_events = anfd->events;
724	unsigned char o_reify = anfd->reify;	802	unsigned char o_reify = anfd->reify;
725		803
726	anfd->reify = 0;	804	anfd->reify = 0;
727	anfd->events = events;	805	anfd->events = events;
728		806
729	if (o_events != events || o_reify & EV_IOFDSET)	807	if (o_events != events || o_reify & EV__IOFDSET)
730	backend_modify (EV_A_ fd, o_events, events);	808	backend_modify (EV_A_ fd, o_events, events);
731	}	809	}
732	}	810	}
733		811
734	fdchangecnt = 0;	812	fdchangecnt = 0;
735	}	813	}
736		814
737	void inline_size	815	/* something about the given fd changed */
		816	inline_size void
738	fd_change (EV_P_ int fd, int flags)	817	fd_change (EV_P_ int fd, int flags)
739	{	818	{
740	unsigned char reify = anfds [fd].reify;	819	unsigned char reify = anfds [fd].reify;
741	anfds [fd].reify |= flags;	820	anfds [fd].reify |= flags;
742		821
…		…
746	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	825	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
747	fdchanges [fdchangecnt - 1] = fd;	826	fdchanges [fdchangecnt - 1] = fd;
748	}	827	}
749	}	828	}
750		829
751	void inline_speed	830	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		831	inline_speed void
752	fd_kill (EV_P_ int fd)	832	fd_kill (EV_P_ int fd)
753	{	833	{
754	ev_io *w;	834	ev_io *w;
755		835
756	while ((w = (ev_io *)anfds [fd].head))	836	while ((w = (ev_io *)anfds [fd].head))
…		…
758	ev_io_stop (EV_A_ w);	838	ev_io_stop (EV_A_ w);
759	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	839	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
760	}	840	}
761	}	841	}
762		842
763	int inline_size	843	/* check whether the given fd is atcually valid, for error recovery */
		844	inline_size int
764	fd_valid (int fd)	845	fd_valid (int fd)
765	{	846	{
766	#ifdef _WIN32	847	#ifdef _WIN32
767	return _get_osfhandle (fd) != -1;	848	return _get_osfhandle (fd) != -1;
768	#else	849	#else
…		…
804		885
805	for (fd = 0; fd < anfdmax; ++fd)	886	for (fd = 0; fd < anfdmax; ++fd)
806	if (anfds [fd].events)	887	if (anfds [fd].events)
807	{	888	{
808	anfds [fd].events = 0;	889	anfds [fd].events = 0;
		890	anfds [fd].emask = 0;
809	fd_change (EV_A_ fd, EV_IOFDSET | 1);	891	fd_change (EV_A_ fd, EV__IOFDSET | 1);
810	}	892	}
811	}	893	}
812		894
813	/*****************************************************************************/	895	/*****************************************************************************/
814		896
…		…
830	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	912	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
831	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)	913	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
832	#define UPHEAP_DONE(p,k) ((p) == (k))	914	#define UPHEAP_DONE(p,k) ((p) == (k))
833		915
834	/* away from the root */	916	/* away from the root */
835	void inline_speed	917	inline_speed void
836	downheap (ANHE *heap, int N, int k)	918	downheap (ANHE *heap, int N, int k)
837	{	919	{
838	ANHE he = heap [k];	920	ANHE he = heap [k];
839	ANHE *E = heap + N + HEAP0;	921	ANHE *E = heap + N + HEAP0;
840		922
…		…
880	#define HEAP0 1	962	#define HEAP0 1
881	#define HPARENT(k) ((k) >> 1)	963	#define HPARENT(k) ((k) >> 1)
882	#define UPHEAP_DONE(p,k) (!(p))	964	#define UPHEAP_DONE(p,k) (!(p))
883		965
884	/* away from the root */	966	/* away from the root */
885	void inline_speed	967	inline_speed void
886	downheap (ANHE *heap, int N, int k)	968	downheap (ANHE *heap, int N, int k)
887	{	969	{
888	ANHE he = heap [k];	970	ANHE he = heap [k];
889		971
890	for (;;)	972	for (;;)
…		…
910	ev_active (ANHE_w (he)) = k;	992	ev_active (ANHE_w (he)) = k;
911	}	993	}
912	#endif	994	#endif
913		995
914	/* towards the root */	996	/* towards the root */
915	void inline_speed	997	inline_speed void
916	upheap (ANHE *heap, int k)	998	upheap (ANHE *heap, int k)
917	{	999	{
918	ANHE he = heap [k];	1000	ANHE he = heap [k];
919		1001
920	for (;;)	1002	for (;;)
…		…
931		1013
932	heap [k] = he;	1014	heap [k] = he;
933	ev_active (ANHE_w (he)) = k;	1015	ev_active (ANHE_w (he)) = k;
934	}	1016	}
935		1017
936	void inline_size	1018	/* move an element suitably so it is in a correct place */
		1019	inline_size void
937	adjustheap (ANHE *heap, int N, int k)	1020	adjustheap (ANHE *heap, int N, int k)
938	{	1021	{
939	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1022	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
940	upheap (heap, k);	1023	upheap (heap, k);
941	else	1024	else
942	downheap (heap, N, k);	1025	downheap (heap, N, k);
943	}	1026	}
944		1027
945	/* rebuild the heap: this function is used only once and executed rarely */	1028	/* rebuild the heap: this function is used only once and executed rarely */
946	void inline_size	1029	inline_size void
947	reheap (ANHE *heap, int N)	1030	reheap (ANHE *heap, int N)
948	{	1031	{
949	int i;	1032	int i;
950		1033
951	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */	1034	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
…		…
954	upheap (heap, i + HEAP0);	1037	upheap (heap, i + HEAP0);
955	}	1038	}
956		1039
957	/*****************************************************************************/	1040	/*****************************************************************************/
958		1041
		1042	/* associate signal watchers to a signal signal */
959	typedef struct	1043	typedef struct
960	{	1044	{
961	WL head;	1045	WL head;
962	EV_ATOMIC_T gotsig;	1046	EV_ATOMIC_T gotsig;
963	} ANSIG;	1047	} ANSIG;
…		…
965	static ANSIG *signals;	1049	static ANSIG *signals;
966	static int signalmax;	1050	static int signalmax;
967		1051
968	static EV_ATOMIC_T gotsig;	1052	static EV_ATOMIC_T gotsig;
969		1053
970	void inline_size
971	signals_init (ANSIG *base, int count)
972	{
973	while (count--)
974	{
975	base->head = 0;
976	base->gotsig = 0;
977
978	++base;
979	}
980	}
981
982	/*****************************************************************************/	1054	/*****************************************************************************/
983		1055
984	void inline_speed	1056	/* used to prepare libev internal fd's */
		1057	/* this is not fork-safe */
		1058	inline_speed void
985	fd_intern (int fd)	1059	fd_intern (int fd)
986	{	1060	{
987	#ifdef _WIN32	1061	#ifdef _WIN32
988	unsigned long arg = 1;	1062	unsigned long arg = 1;
989	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1063	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
994	}	1068	}
995		1069
996	static void noinline	1070	static void noinline
997	evpipe_init (EV_P)	1071	evpipe_init (EV_P)
998	{	1072	{
999	if (!ev_is_active (&pipeev))	1073	if (!ev_is_active (&pipe_w))
1000	{	1074	{
1001	#if EV_USE_EVENTFD	1075	#if EV_USE_EVENTFD
1002	if ((evfd = eventfd (0, 0)) >= 0)	1076	if ((evfd = eventfd (0, 0)) >= 0)
1003	{	1077	{
1004	evpipe [0] = -1;	1078	evpipe [0] = -1;
1005	fd_intern (evfd);	1079	fd_intern (evfd);
1006	ev_io_set (&pipeev, evfd, EV_READ);	1080	ev_io_set (&pipe_w, evfd, EV_READ);
1007	}	1081	}
1008	else	1082	else
1009	#endif	1083	#endif
1010	{	1084	{
1011	while (pipe (evpipe))	1085	while (pipe (evpipe))
1012	syserr ("(libev) error creating signal/async pipe");	1086	ev_syserr ("(libev) error creating signal/async pipe");
1013		1087
1014	fd_intern (evpipe [0]);	1088	fd_intern (evpipe [0]);
1015	fd_intern (evpipe [1]);	1089	fd_intern (evpipe [1]);
1016	ev_io_set (&pipeev, evpipe [0], EV_READ);	1090	ev_io_set (&pipe_w, evpipe [0], EV_READ);
1017	}	1091	}
1018		1092
1019	ev_io_start (EV_A_ &pipeev);	1093	ev_io_start (EV_A_ &pipe_w);
1020	ev_unref (EV_A); /* watcher should not keep loop alive */	1094	ev_unref (EV_A); /* watcher should not keep loop alive */
1021	}	1095	}
1022	}	1096	}
1023		1097
1024	void inline_size	1098	inline_size void
1025	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1099	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1026	{	1100	{
1027	if (!*flag)	1101	if (!*flag)
1028	{	1102	{
1029	int old_errno = errno; /* save errno because write might clobber it */	1103	int old_errno = errno; /* save errno because write might clobber it */
…		…
1042		1116
1043	errno = old_errno;	1117	errno = old_errno;
1044	}	1118	}
1045	}	1119	}
1046		1120
		1121	/* called whenever the libev signal pipe */
		1122	/* got some events (signal, async) */
1047	static void	1123	static void
1048	pipecb (EV_P_ ev_io *iow, int revents)	1124	pipecb (EV_P_ ev_io *iow, int revents)
1049	{	1125	{
1050	#if EV_USE_EVENTFD	1126	#if EV_USE_EVENTFD
1051	if (evfd >= 0)	1127	if (evfd >= 0)
…		…
1107	ev_feed_signal_event (EV_P_ int signum)	1183	ev_feed_signal_event (EV_P_ int signum)
1108	{	1184	{
1109	WL w;	1185	WL w;
1110		1186
1111	#if EV_MULTIPLICITY	1187	#if EV_MULTIPLICITY
1112	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1188	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1113	#endif	1189	#endif
1114		1190
1115	--signum;	1191	--signum;
1116		1192
1117	if (signum < 0 || signum >= signalmax)	1193	if (signum < 0 || signum >= signalmax)
…		…
1133		1209
1134	#ifndef WIFCONTINUED	1210	#ifndef WIFCONTINUED
1135	# define WIFCONTINUED(status) 0	1211	# define WIFCONTINUED(status) 0
1136	#endif	1212	#endif
1137		1213
1138	void inline_speed	1214	/* handle a single child status event */
		1215	inline_speed void
1139	child_reap (EV_P_ int chain, int pid, int status)	1216	child_reap (EV_P_ int chain, int pid, int status)
1140	{	1217	{
1141	ev_child *w;	1218	ev_child *w;
1142	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1219	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1143		1220
…		…
1156		1233
1157	#ifndef WCONTINUED	1234	#ifndef WCONTINUED
1158	# define WCONTINUED 0	1235	# define WCONTINUED 0
1159	#endif	1236	#endif
1160		1237
		1238	/* called on sigchld etc., calls waitpid */
1161	static void	1239	static void
1162	childcb (EV_P_ ev_signal *sw, int revents)	1240	childcb (EV_P_ ev_signal *sw, int revents)
1163	{	1241	{
1164	int pid, status;	1242	int pid, status;
1165		1243
…		…
1246	/* kqueue is borked on everything but netbsd apparently */	1324	/* kqueue is borked on everything but netbsd apparently */
1247	/* it usually doesn't work correctly on anything but sockets and pipes */	1325	/* it usually doesn't work correctly on anything but sockets and pipes */
1248	flags &= ~EVBACKEND_KQUEUE;	1326	flags &= ~EVBACKEND_KQUEUE;
1249	#endif	1327	#endif
1250	#ifdef __APPLE__	1328	#ifdef __APPLE__
1251	// flags &= ~EVBACKEND_KQUEUE; for documentation	1329	/* only select works correctly on that "unix-certified" platform */
1252	flags &= ~EVBACKEND_POLL;	1330	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1331	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1253	#endif	1332	#endif
1254		1333
1255	return flags;	1334	return flags;
1256	}	1335	}
1257		1336
…		…
1289	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1368	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1290	{	1369	{
1291	timeout_blocktime = interval;	1370	timeout_blocktime = interval;
1292	}	1371	}
1293		1372
		1373	/* initialise a loop structure, must be zero-initialised */
1294	static void noinline	1374	static void noinline
1295	loop_init (EV_P_ unsigned int flags)	1375	loop_init (EV_P_ unsigned int flags)
1296	{	1376	{
1297	if (!backend)	1377	if (!backend)
1298	{	1378	{
		1379	#if EV_USE_REALTIME
		1380	if (!have_realtime)
		1381	{
		1382	struct timespec ts;
		1383
		1384	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1385	have_realtime = 1;
		1386	}
		1387	#endif
		1388
1299	#if EV_USE_MONOTONIC	1389	#if EV_USE_MONOTONIC
		1390	if (!have_monotonic)
1300	{	1391	{
1301	struct timespec ts;	1392	struct timespec ts;
		1393
1302	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1394	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1303	have_monotonic = 1;	1395	have_monotonic = 1;
1304	}	1396	}
1305	#endif	1397	#endif
1306		1398
1307	ev_rt_now = ev_time ();	1399	ev_rt_now = ev_time ();
1308	mn_now = get_clock ();	1400	mn_now = get_clock ();
1309	now_floor = mn_now;	1401	now_floor = mn_now;
…		…
1346	#endif	1438	#endif
1347	#if EV_USE_SELECT	1439	#if EV_USE_SELECT
1348	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1440	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1349	#endif	1441	#endif
1350		1442
		1443	ev_prepare_init (&pending_w, pendingcb);
		1444
1351	ev_init (&pipeev, pipecb);	1445	ev_init (&pipe_w, pipecb);
1352	ev_set_priority (&pipeev, EV_MAXPRI);	1446	ev_set_priority (&pipe_w, EV_MAXPRI);
1353	}	1447	}
1354	}	1448	}
1355		1449
		1450	/* free up a loop structure */
1356	static void noinline	1451	static void noinline
1357	loop_destroy (EV_P)	1452	loop_destroy (EV_P)
1358	{	1453	{
1359	int i;	1454	int i;
1360		1455
1361	if (ev_is_active (&pipeev))	1456	if (ev_is_active (&pipe_w))
1362	{	1457	{
1363	ev_ref (EV_A); /* signal watcher */	1458	ev_ref (EV_A); /* signal watcher */
1364	ev_io_stop (EV_A_ &pipeev);	1459	ev_io_stop (EV_A_ &pipe_w);
1365		1460
1366	#if EV_USE_EVENTFD	1461	#if EV_USE_EVENTFD
1367	if (evfd >= 0)	1462	if (evfd >= 0)
1368	close (evfd);	1463	close (evfd);
1369	#endif	1464	#endif
…		…
1408	}	1503	}
1409		1504
1410	ev_free (anfds); anfdmax = 0;	1505	ev_free (anfds); anfdmax = 0;
1411		1506
1412	/* have to use the microsoft-never-gets-it-right macro */	1507	/* have to use the microsoft-never-gets-it-right macro */
		1508	array_free (rfeed, EMPTY);
1413	array_free (fdchange, EMPTY);	1509	array_free (fdchange, EMPTY);
1414	array_free (timer, EMPTY);	1510	array_free (timer, EMPTY);
1415	#if EV_PERIODIC_ENABLE	1511	#if EV_PERIODIC_ENABLE
1416	array_free (periodic, EMPTY);	1512	array_free (periodic, EMPTY);
1417	#endif	1513	#endif
…		…
1426		1522
1427	backend = 0;	1523	backend = 0;
1428	}	1524	}
1429		1525
1430	#if EV_USE_INOTIFY	1526	#if EV_USE_INOTIFY
1431	void inline_size infy_fork (EV_P);	1527	inline_size void infy_fork (EV_P);
1432	#endif	1528	#endif
1433		1529
1434	void inline_size	1530	inline_size void
1435	loop_fork (EV_P)	1531	loop_fork (EV_P)
1436	{	1532	{
1437	#if EV_USE_PORT	1533	#if EV_USE_PORT
1438	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1534	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1439	#endif	1535	#endif
…		…
1445	#endif	1541	#endif
1446	#if EV_USE_INOTIFY	1542	#if EV_USE_INOTIFY
1447	infy_fork (EV_A);	1543	infy_fork (EV_A);
1448	#endif	1544	#endif
1449		1545
1450	if (ev_is_active (&pipeev))	1546	if (ev_is_active (&pipe_w))
1451	{	1547	{
1452	/* this "locks" the handlers against writing to the pipe */	1548	/* this "locks" the handlers against writing to the pipe */
1453	/* while we modify the fd vars */	1549	/* while we modify the fd vars */
1454	gotsig = 1;	1550	gotsig = 1;
1455	#if EV_ASYNC_ENABLE	1551	#if EV_ASYNC_ENABLE
1456	gotasync = 1;	1552	gotasync = 1;
1457	#endif	1553	#endif
1458		1554
1459	ev_ref (EV_A);	1555	ev_ref (EV_A);
1460	ev_io_stop (EV_A_ &pipeev);	1556	ev_io_stop (EV_A_ &pipe_w);
1461		1557
1462	#if EV_USE_EVENTFD	1558	#if EV_USE_EVENTFD
1463	if (evfd >= 0)	1559	if (evfd >= 0)
1464	close (evfd);	1560	close (evfd);
1465	#endif	1561	#endif
…		…
1470	close (evpipe [1]);	1566	close (evpipe [1]);
1471	}	1567	}
1472		1568
1473	evpipe_init (EV_A);	1569	evpipe_init (EV_A);
1474	/* now iterate over everything, in case we missed something */	1570	/* now iterate over everything, in case we missed something */
1475	pipecb (EV_A_ &pipeev, EV_READ);	1571	pipecb (EV_A_ &pipe_w, EV_READ);
1476	}	1572	}
1477		1573
1478	postfork = 0;	1574	postfork = 0;
1479	}	1575	}
1480		1576
…		…
1507	{	1603	{
1508	postfork = 1; /* must be in line with ev_default_fork */	1604	postfork = 1; /* must be in line with ev_default_fork */
1509	}	1605	}
1510		1606
1511	#if EV_VERIFY	1607	#if EV_VERIFY
1512	void noinline	1608	static void noinline
1513	verify_watcher (EV_P_ W w)	1609	verify_watcher (EV_P_ W w)
1514	{	1610	{
1515	assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));	1611	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1516		1612
1517	if (w->pending)	1613	if (w->pending)
1518	assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));	1614	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1519	}	1615	}
1520		1616
1521	static void noinline	1617	static void noinline
1522	verify_heap (EV_P_ ANHE *heap, int N)	1618	verify_heap (EV_P_ ANHE *heap, int N)
1523	{	1619	{
1524	int i;	1620	int i;
1525		1621
1526	for (i = HEAP0; i < N + HEAP0; ++i)	1622	for (i = HEAP0; i < N + HEAP0; ++i)
1527	{	1623	{
1528	assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));	1624	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1529	assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));	1625	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1530	assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));	1626	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1531		1627
1532	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));	1628	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1533	}	1629	}
1534	}	1630	}
1535		1631
1536	static void noinline	1632	static void noinline
1537	array_verify (EV_P_ W *ws, int cnt)	1633	array_verify (EV_P_ W *ws, int cnt)
1538	{	1634	{
1539	while (cnt--)	1635	while (cnt--)
1540	{	1636	{
1541	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));	1637	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1542	verify_watcher (EV_A_ ws [cnt]);	1638	verify_watcher (EV_A_ ws [cnt]);
1543	}	1639	}
1544	}	1640	}
1545	#endif	1641	#endif
1546		1642
…		…
1553		1649
1554	assert (activecnt >= -1);	1650	assert (activecnt >= -1);
1555		1651
1556	assert (fdchangemax >= fdchangecnt);	1652	assert (fdchangemax >= fdchangecnt);
1557	for (i = 0; i < fdchangecnt; ++i)	1653	for (i = 0; i < fdchangecnt; ++i)
1558	assert (("negative fd in fdchanges", fdchanges [i] >= 0));	1654	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1559		1655
1560	assert (anfdmax >= 0);	1656	assert (anfdmax >= 0);
1561	for (i = 0; i < anfdmax; ++i)	1657	for (i = 0; i < anfdmax; ++i)
1562	for (w = anfds [i].head; w; w = w->next)	1658	for (w = anfds [i].head; w; w = w->next)
1563	{	1659	{
1564	verify_watcher (EV_A_ (W)w);	1660	verify_watcher (EV_A_ (W)w);
1565	assert (("inactive fd watcher on anfd list", ev_active (w) == 1));	1661	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1566	assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));	1662	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1567	}	1663	}
1568		1664
1569	assert (timermax >= timercnt);	1665	assert (timermax >= timercnt);
1570	verify_heap (EV_A_ timers, timercnt);	1666	verify_heap (EV_A_ timers, timercnt);
1571		1667
…		…
1648	{	1744	{
1649	#if EV_MULTIPLICITY	1745	#if EV_MULTIPLICITY
1650	struct ev_loop *loop = ev_default_loop_ptr;	1746	struct ev_loop *loop = ev_default_loop_ptr;
1651	#endif	1747	#endif
1652		1748
		1749	ev_default_loop_ptr = 0;
		1750
1653	#ifndef _WIN32	1751	#ifndef _WIN32
1654	ev_ref (EV_A); /* child watcher */	1752	ev_ref (EV_A); /* child watcher */
1655	ev_signal_stop (EV_A_ &childev);	1753	ev_signal_stop (EV_A_ &childev);
1656	#endif	1754	#endif
1657		1755
…		…
1663	{	1761	{
1664	#if EV_MULTIPLICITY	1762	#if EV_MULTIPLICITY
1665	struct ev_loop *loop = ev_default_loop_ptr;	1763	struct ev_loop *loop = ev_default_loop_ptr;
1666	#endif	1764	#endif
1667		1765
1668	if (backend)
1669	postfork = 1; /* must be in line with ev_loop_fork */	1766	postfork = 1; /* must be in line with ev_loop_fork */
1670	}	1767	}
1671		1768
1672	/*****************************************************************************/	1769	/*****************************************************************************/
1673		1770
1674	void	1771	void
1675	ev_invoke (EV_P_ void *w, int revents)	1772	ev_invoke (EV_P_ void *w, int revents)
1676	{	1773	{
1677	EV_CB_INVOKE ((W)w, revents);	1774	EV_CB_INVOKE ((W)w, revents);
1678	}	1775	}
1679		1776
1680	void inline_speed	1777	inline_speed void
1681	call_pending (EV_P)	1778	call_pending (EV_P)
1682	{	1779	{
1683	int pri;	1780	int pri;
1684		1781
1685	for (pri = NUMPRI; pri--; )	1782	for (pri = NUMPRI; pri--; )
1686	while (pendingcnt [pri])	1783	while (pendingcnt [pri])
1687	{	1784	{
1688	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1785	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1689		1786
1690	if (expect_true (p->w))
1691	{
1692	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1787	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1788	/* ^ this is no longer true, as pending_w could be here */
1693		1789
1694	p->w->pending = 0;	1790	p->w->pending = 0;
1695	EV_CB_INVOKE (p->w, p->events);	1791	EV_CB_INVOKE (p->w, p->events);
1696	EV_FREQUENT_CHECK;	1792	EV_FREQUENT_CHECK;
1697	}
1698	}	1793	}
1699	}	1794	}
1700		1795
1701	#if EV_IDLE_ENABLE	1796	#if EV_IDLE_ENABLE
1702	void inline_size	1797	/* make idle watchers pending. this handles the "call-idle */
		1798	/* only when higher priorities are idle" logic */
		1799	inline_size void
1703	idle_reify (EV_P)	1800	idle_reify (EV_P)
1704	{	1801	{
1705	if (expect_false (idleall))	1802	if (expect_false (idleall))
1706	{	1803	{
1707	int pri;	1804	int pri;
…		…
1719	}	1816	}
1720	}	1817	}
1721	}	1818	}
1722	#endif	1819	#endif
1723		1820
1724	void inline_size	1821	/* make timers pending */
		1822	inline_size void
1725	timers_reify (EV_P)	1823	timers_reify (EV_P)
1726	{	1824	{
1727	EV_FREQUENT_CHECK;	1825	EV_FREQUENT_CHECK;
1728		1826
1729	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	1827	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1730	{	1828	{
1731	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	1829	do
1732
1733	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1734
1735	/* first reschedule or stop timer */
1736	if (w->repeat)
1737	{	1830	{
		1831	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1832
		1833	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		1834
		1835	/* first reschedule or stop timer */
		1836	if (w->repeat)
		1837	{
1738	ev_at (w) += w->repeat;	1838	ev_at (w) += w->repeat;
1739	if (ev_at (w) < mn_now)	1839	if (ev_at (w) < mn_now)
1740	ev_at (w) = mn_now;	1840	ev_at (w) = mn_now;
1741		1841
1742	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1842	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1743		1843
1744	ANHE_at_cache (timers [HEAP0]);	1844	ANHE_at_cache (timers [HEAP0]);
1745	downheap (timers, timercnt, HEAP0);	1845	downheap (timers, timercnt, HEAP0);
		1846	}
		1847	else
		1848	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1849
		1850	EV_FREQUENT_CHECK;
		1851	feed_reverse (EV_A_ (W)w);
1746	}	1852	}
1747	else	1853	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1748	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1749		1854
1750	EV_FREQUENT_CHECK;
1751	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1855	feed_reverse_done (EV_A_ EV_TIMEOUT);
1752	}	1856	}
1753	}	1857	}
1754		1858
1755	#if EV_PERIODIC_ENABLE	1859	#if EV_PERIODIC_ENABLE
1756	void inline_size	1860	/* make periodics pending */
		1861	inline_size void
1757	periodics_reify (EV_P)	1862	periodics_reify (EV_P)
1758	{	1863	{
1759	EV_FREQUENT_CHECK;	1864	EV_FREQUENT_CHECK;
1760		1865
1761	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	1866	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1762	{	1867	{
1763	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	1868	int feed_count = 0;
1764		1869
1765	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	1870	do
1766
1767	/* first reschedule or stop timer */
1768	if (w->reschedule_cb)
1769	{	1871	{
		1872	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1873
		1874	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		1875
		1876	/* first reschedule or stop timer */
		1877	if (w->reschedule_cb)
		1878	{
1770	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1879	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1771		1880
1772	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));	1881	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1773		1882
1774	ANHE_at_cache (periodics [HEAP0]);	1883	ANHE_at_cache (periodics [HEAP0]);
1775	downheap (periodics, periodiccnt, HEAP0);	1884	downheap (periodics, periodiccnt, HEAP0);
		1885	}
		1886	else if (w->interval)
		1887	{
		1888	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1889	/* if next trigger time is not sufficiently in the future, put it there */
		1890	/* this might happen because of floating point inexactness */
		1891	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1892	{
		1893	ev_at (w) += w->interval;
		1894
		1895	/* if interval is unreasonably low we might still have a time in the past */
		1896	/* so correct this. this will make the periodic very inexact, but the user */
		1897	/* has effectively asked to get triggered more often than possible */
		1898	if (ev_at (w) < ev_rt_now)
		1899	ev_at (w) = ev_rt_now;
		1900	}
		1901
		1902	ANHE_at_cache (periodics [HEAP0]);
		1903	downheap (periodics, periodiccnt, HEAP0);
		1904	}
		1905	else
		1906	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1907
		1908	EV_FREQUENT_CHECK;
		1909	feed_reverse (EV_A_ (W)w);
1776	}	1910	}
1777	else if (w->interval)	1911	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1778	{
1779	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1780	/* if next trigger time is not sufficiently in the future, put it there */
1781	/* this might happen because of floating point inexactness */
1782	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1783	{
1784	ev_at (w) += w->interval;
1785		1912
1786	/* if interval is unreasonably low we might still have a time in the past */
1787	/* so correct this. this will make the periodic very inexact, but the user */
1788	/* has effectively asked to get triggered more often than possible */
1789	if (ev_at (w) < ev_rt_now)
1790	ev_at (w) = ev_rt_now;
1791	}
1792
1793	ANHE_at_cache (periodics [HEAP0]);
1794	downheap (periodics, periodiccnt, HEAP0);
1795	}
1796	else
1797	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1798
1799	EV_FREQUENT_CHECK;
1800	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1913	feed_reverse_done (EV_A_ EV_PERIODIC);
1801	}	1914	}
1802	}	1915	}
1803		1916
		1917	/* simply recalculate all periodics */
		1918	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1804	static void noinline	1919	static void noinline
1805	periodics_reschedule (EV_P)	1920	periodics_reschedule (EV_P)
1806	{	1921	{
1807	int i;	1922	int i;
1808		1923
…		…
1821		1936
1822	reheap (periodics, periodiccnt);	1937	reheap (periodics, periodiccnt);
1823	}	1938	}
1824	#endif	1939	#endif
1825		1940
1826	void inline_speed	1941	/* adjust all timers by a given offset */
		1942	static void noinline
		1943	timers_reschedule (EV_P_ ev_tstamp adjust)
		1944	{
		1945	int i;
		1946
		1947	for (i = 0; i < timercnt; ++i)
		1948	{
		1949	ANHE *he = timers + i + HEAP0;
		1950	ANHE_w (*he)->at += adjust;
		1951	ANHE_at_cache (*he);
		1952	}
		1953	}
		1954
		1955	/* fetch new monotonic and realtime times from the kernel */
		1956	/* also detetc if there was a timejump, and act accordingly */
		1957	inline_speed void
1827	time_update (EV_P_ ev_tstamp max_block)	1958	time_update (EV_P_ ev_tstamp max_block)
1828	{	1959	{
1829	int i;
1830
1831	#if EV_USE_MONOTONIC	1960	#if EV_USE_MONOTONIC
1832	if (expect_true (have_monotonic))	1961	if (expect_true (have_monotonic))
1833	{	1962	{
		1963	int i;
1834	ev_tstamp odiff = rtmn_diff;	1964	ev_tstamp odiff = rtmn_diff;
1835		1965
1836	mn_now = get_clock ();	1966	mn_now = get_clock ();
1837		1967
1838	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	1968	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1864	ev_rt_now = ev_time ();	1994	ev_rt_now = ev_time ();
1865	mn_now = get_clock ();	1995	mn_now = get_clock ();
1866	now_floor = mn_now;	1996	now_floor = mn_now;
1867	}	1997	}
1868		1998
		1999	/* no timer adjustment, as the monotonic clock doesn't jump */
		2000	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1869	# if EV_PERIODIC_ENABLE	2001	# if EV_PERIODIC_ENABLE
1870	periodics_reschedule (EV_A);	2002	periodics_reschedule (EV_A);
1871	# endif	2003	# endif
1872	/* no timer adjustment, as the monotonic clock doesn't jump */
1873	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1874	}	2004	}
1875	else	2005	else
1876	#endif	2006	#endif
1877	{	2007	{
1878	ev_rt_now = ev_time ();	2008	ev_rt_now = ev_time ();
1879		2009
1880	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2010	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1881	{	2011	{
		2012	/* adjust timers. this is easy, as the offset is the same for all of them */
		2013	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1882	#if EV_PERIODIC_ENABLE	2014	#if EV_PERIODIC_ENABLE
1883	periodics_reschedule (EV_A);	2015	periodics_reschedule (EV_A);
1884	#endif	2016	#endif
1885	/* adjust timers. this is easy, as the offset is the same for all of them */
1886	for (i = 0; i < timercnt; ++i)
1887	{
1888	ANHE *he = timers + i + HEAP0;
1889	ANHE_w (*he)->at += ev_rt_now - mn_now;
1890	ANHE_at_cache (*he);
1891	}
1892	}	2017	}
1893		2018
1894	mn_now = ev_rt_now;	2019	mn_now = ev_rt_now;
1895	}	2020	}
1896	}
1897
1898	void
1899	ev_ref (EV_P)
1900	{
1901	++activecnt;
1902	}
1903
1904	void
1905	ev_unref (EV_P)
1906	{
1907	--activecnt;
1908	}	2021	}
1909		2022
1910	static int loop_done;	2023	static int loop_done;
1911		2024
1912	void	2025	void
…		…
1946	{	2059	{
1947	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2060	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1948	call_pending (EV_A);	2061	call_pending (EV_A);
1949	}	2062	}
1950		2063
1951	if (expect_false (!activecnt))
1952	break;
1953
1954	/* we might have forked, so reify kernel state if necessary */	2064	/* we might have forked, so reify kernel state if necessary */
1955	if (expect_false (postfork))	2065	if (expect_false (postfork))
1956	loop_fork (EV_A);	2066	loop_fork (EV_A);
1957		2067
1958	/* update fd-related kernel structures */	2068	/* update fd-related kernel structures */
…		…
2037	ev_unloop (EV_P_ int how)	2147	ev_unloop (EV_P_ int how)
2038	{	2148	{
2039	loop_done = how;	2149	loop_done = how;
2040	}	2150	}
2041		2151
		2152	void
		2153	ev_ref (EV_P)
		2154	{
		2155	++activecnt;
		2156	}
		2157
		2158	void
		2159	ev_unref (EV_P)
		2160	{
		2161	--activecnt;
		2162	}
		2163
		2164	void
		2165	ev_now_update (EV_P)
		2166	{
		2167	time_update (EV_A_ 1e100);
		2168	}
		2169
		2170	void
		2171	ev_suspend (EV_P)
		2172	{
		2173	ev_now_update (EV_A);
		2174	}
		2175
		2176	void
		2177	ev_resume (EV_P)
		2178	{
		2179	ev_tstamp mn_prev = mn_now;
		2180
		2181	ev_now_update (EV_A);
		2182	timers_reschedule (EV_A_ mn_now - mn_prev);
		2183	#if EV_PERIODIC_ENABLE
		2184	/* TODO: really do this? */
		2185	periodics_reschedule (EV_A);
		2186	#endif
		2187	}
		2188
2042	/*****************************************************************************/	2189	/*****************************************************************************/
		2190	/* singly-linked list management, used when the expected list length is short */
2043		2191
2044	void inline_size	2192	inline_size void
2045	wlist_add (WL *head, WL elem)	2193	wlist_add (WL *head, WL elem)
2046	{	2194	{
2047	elem->next = *head;	2195	elem->next = *head;
2048	*head = elem;	2196	*head = elem;
2049	}	2197	}
2050		2198
2051	void inline_size	2199	inline_size void
2052	wlist_del (WL *head, WL elem)	2200	wlist_del (WL *head, WL elem)
2053	{	2201	{
2054	while (*head)	2202	while (*head)
2055	{	2203	{
2056	if (*head == elem)	2204	if (*head == elem)
…		…
2061		2209
2062	head = &(*head)->next;	2210	head = &(*head)->next;
2063	}	2211	}
2064	}	2212	}
2065		2213
2066	void inline_speed	2214	/* internal, faster, version of ev_clear_pending */
		2215	inline_speed void
2067	clear_pending (EV_P_ W w)	2216	clear_pending (EV_P_ W w)
2068	{	2217	{
2069	if (w->pending)	2218	if (w->pending)
2070	{	2219	{
2071	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2220	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2072	w->pending = 0;	2221	w->pending = 0;
2073	}	2222	}
2074	}	2223	}
2075		2224
2076	int	2225	int
…		…
2080	int pending = w_->pending;	2229	int pending = w_->pending;
2081		2230
2082	if (expect_true (pending))	2231	if (expect_true (pending))
2083	{	2232	{
2084	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2233	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2234	p->w = (W)&pending_w;
2085	w_->pending = 0;	2235	w_->pending = 0;
2086	p->w = 0;
2087	return p->events;	2236	return p->events;
2088	}	2237	}
2089	else	2238	else
2090	return 0;	2239	return 0;
2091	}	2240	}
2092		2241
2093	void inline_size	2242	inline_size void
2094	pri_adjust (EV_P_ W w)	2243	pri_adjust (EV_P_ W w)
2095	{	2244	{
2096	int pri = w->priority;	2245	int pri = w->priority;
2097	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2246	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2098	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2247	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2099	w->priority = pri;	2248	w->priority = pri;
2100	}	2249	}
2101		2250
2102	void inline_speed	2251	inline_speed void
2103	ev_start (EV_P_ W w, int active)	2252	ev_start (EV_P_ W w, int active)
2104	{	2253	{
2105	pri_adjust (EV_A_ w);	2254	pri_adjust (EV_A_ w);
2106	w->active = active;	2255	w->active = active;
2107	ev_ref (EV_A);	2256	ev_ref (EV_A);
2108	}	2257	}
2109		2258
2110	void inline_size	2259	inline_size void
2111	ev_stop (EV_P_ W w)	2260	ev_stop (EV_P_ W w)
2112	{	2261	{
2113	ev_unref (EV_A);	2262	ev_unref (EV_A);
2114	w->active = 0;	2263	w->active = 0;
2115	}	2264	}
…		…
2122	int fd = w->fd;	2271	int fd = w->fd;
2123		2272
2124	if (expect_false (ev_is_active (w)))	2273	if (expect_false (ev_is_active (w)))
2125	return;	2274	return;
2126		2275
2127	assert (("ev_io_start called with negative fd", fd >= 0));	2276	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2277	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2128		2278
2129	EV_FREQUENT_CHECK;	2279	EV_FREQUENT_CHECK;
2130		2280
2131	ev_start (EV_A_ (W)w, 1);	2281	ev_start (EV_A_ (W)w, 1);
2132	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2282	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2133	wlist_add (&anfds[fd].head, (WL)w);	2283	wlist_add (&anfds[fd].head, (WL)w);
2134		2284
2135	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2285	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
2136	w->events &= ~EV_IOFDSET;	2286	w->events &= ~EV__IOFDSET;
2137		2287
2138	EV_FREQUENT_CHECK;	2288	EV_FREQUENT_CHECK;
2139	}	2289	}
2140		2290
2141	void noinline	2291	void noinline
…		…
2143	{	2293	{
2144	clear_pending (EV_A_ (W)w);	2294	clear_pending (EV_A_ (W)w);
2145	if (expect_false (!ev_is_active (w)))	2295	if (expect_false (!ev_is_active (w)))
2146	return;	2296	return;
2147		2297
2148	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2298	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2149		2299
2150	EV_FREQUENT_CHECK;	2300	EV_FREQUENT_CHECK;
2151		2301
2152	wlist_del (&anfds[w->fd].head, (WL)w);	2302	wlist_del (&anfds[w->fd].head, (WL)w);
2153	ev_stop (EV_A_ (W)w);	2303	ev_stop (EV_A_ (W)w);
…		…
2163	if (expect_false (ev_is_active (w)))	2313	if (expect_false (ev_is_active (w)))
2164	return;	2314	return;
2165		2315
2166	ev_at (w) += mn_now;	2316	ev_at (w) += mn_now;
2167		2317
2168	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2318	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2169		2319
2170	EV_FREQUENT_CHECK;	2320	EV_FREQUENT_CHECK;
2171		2321
2172	++timercnt;	2322	++timercnt;
2173	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);	2323	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
…		…
2176	ANHE_at_cache (timers [ev_active (w)]);	2326	ANHE_at_cache (timers [ev_active (w)]);
2177	upheap (timers, ev_active (w));	2327	upheap (timers, ev_active (w));
2178		2328
2179	EV_FREQUENT_CHECK;	2329	EV_FREQUENT_CHECK;
2180		2330
2181	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2331	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2182	}	2332	}
2183		2333
2184	void noinline	2334	void noinline
2185	ev_timer_stop (EV_P_ ev_timer *w)	2335	ev_timer_stop (EV_P_ ev_timer *w)
2186	{	2336	{
…		…
2191	EV_FREQUENT_CHECK;	2341	EV_FREQUENT_CHECK;
2192		2342
2193	{	2343	{
2194	int active = ev_active (w);	2344	int active = ev_active (w);
2195		2345
2196	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2346	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2197		2347
2198	--timercnt;	2348	--timercnt;
2199		2349
2200	if (expect_true (active < timercnt + HEAP0))	2350	if (expect_true (active < timercnt + HEAP0))
2201	{	2351	{
…		…
2245		2395
2246	if (w->reschedule_cb)	2396	if (w->reschedule_cb)
2247	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2397	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2248	else if (w->interval)	2398	else if (w->interval)
2249	{	2399	{
2250	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2400	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2251	/* this formula differs from the one in periodic_reify because we do not always round up */	2401	/* this formula differs from the one in periodic_reify because we do not always round up */
2252	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2402	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2253	}	2403	}
2254	else	2404	else
2255	ev_at (w) = w->offset;	2405	ev_at (w) = w->offset;
…		…
2263	ANHE_at_cache (periodics [ev_active (w)]);	2413	ANHE_at_cache (periodics [ev_active (w)]);
2264	upheap (periodics, ev_active (w));	2414	upheap (periodics, ev_active (w));
2265		2415
2266	EV_FREQUENT_CHECK;	2416	EV_FREQUENT_CHECK;
2267		2417
2268	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2418	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2269	}	2419	}
2270		2420
2271	void noinline	2421	void noinline
2272	ev_periodic_stop (EV_P_ ev_periodic *w)	2422	ev_periodic_stop (EV_P_ ev_periodic *w)
2273	{	2423	{
…		…
2278	EV_FREQUENT_CHECK;	2428	EV_FREQUENT_CHECK;
2279		2429
2280	{	2430	{
2281	int active = ev_active (w);	2431	int active = ev_active (w);
2282		2432
2283	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2433	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2284		2434
2285	--periodiccnt;	2435	--periodiccnt;
2286		2436
2287	if (expect_true (active < periodiccnt + HEAP0))	2437	if (expect_true (active < periodiccnt + HEAP0))
2288	{	2438	{
…		…
2311		2461
2312	void noinline	2462	void noinline
2313	ev_signal_start (EV_P_ ev_signal *w)	2463	ev_signal_start (EV_P_ ev_signal *w)
2314	{	2464	{
2315	#if EV_MULTIPLICITY	2465	#if EV_MULTIPLICITY
2316	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2466	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2317	#endif	2467	#endif
2318	if (expect_false (ev_is_active (w)))	2468	if (expect_false (ev_is_active (w)))
2319	return;	2469	return;
2320		2470
2321	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2471	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2322		2472
2323	evpipe_init (EV_A);	2473	evpipe_init (EV_A);
2324		2474
2325	EV_FREQUENT_CHECK;	2475	EV_FREQUENT_CHECK;
2326		2476
…		…
2329	sigset_t full, prev;	2479	sigset_t full, prev;
2330	sigfillset (&full);	2480	sigfillset (&full);
2331	sigprocmask (SIG_SETMASK, &full, &prev);	2481	sigprocmask (SIG_SETMASK, &full, &prev);
2332	#endif	2482	#endif
2333		2483
2334	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2484	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2335		2485
2336	#ifndef _WIN32	2486	#ifndef _WIN32
2337	sigprocmask (SIG_SETMASK, &prev, 0);	2487	sigprocmask (SIG_SETMASK, &prev, 0);
2338	#endif	2488	#endif
2339	}	2489	}
…		…
2377		2527
2378	void	2528	void
2379	ev_child_start (EV_P_ ev_child *w)	2529	ev_child_start (EV_P_ ev_child *w)
2380	{	2530	{
2381	#if EV_MULTIPLICITY	2531	#if EV_MULTIPLICITY
2382	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2532	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2383	#endif	2533	#endif
2384	if (expect_false (ev_is_active (w)))	2534	if (expect_false (ev_is_active (w)))
2385	return;	2535	return;
2386		2536
2387	EV_FREQUENT_CHECK;	2537	EV_FREQUENT_CHECK;
…		…
2412	# ifdef _WIN32	2562	# ifdef _WIN32
2413	# undef lstat	2563	# undef lstat
2414	# define lstat(a,b) _stati64 (a,b)	2564	# define lstat(a,b) _stati64 (a,b)
2415	# endif	2565	# endif
2416		2566
2417	#define DEF_STAT_INTERVAL 5.0074891	2567	#define DEF_STAT_INTERVAL 5.0074891
		2568	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2418	#define MIN_STAT_INTERVAL 0.1074891	2569	#define MIN_STAT_INTERVAL 0.1074891
2419		2570
2420	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2571	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2421		2572
2422	#if EV_USE_INOTIFY	2573	#if EV_USE_INOTIFY
2423	# define EV_INOTIFY_BUFSIZE 8192	2574	# define EV_INOTIFY_BUFSIZE 8192
…		…
2427	{	2578	{
2428	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);	2579	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2429		2580
2430	if (w->wd < 0)	2581	if (w->wd < 0)
2431	{	2582	{
		2583	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2432	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2584	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2433		2585
2434	/* monitor some parent directory for speedup hints */	2586	/* monitor some parent directory for speedup hints */
2435	/* note that exceeding the hardcoded limit is not a correctness issue, */	2587	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2436	/* but an efficiency issue only */	2588	/* but an efficiency issue only */
2437	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2589	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2438	{	2590	{
2439	char path [4096];	2591	char path [4096];
2440	strcpy (path, w->path);	2592	strcpy (path, w->path);
…		…
2444	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2596	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2445	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2597	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2446		2598
2447	char *pend = strrchr (path, '/');	2599	char *pend = strrchr (path, '/');
2448		2600
2449	if (!pend)	2601	if (!pend || pend == path)
2450	break; /* whoops, no '/', complain to your admin */	2602	break;
2451		2603
2452	*pend = 0;	2604	*pend = 0;
2453	w->wd = inotify_add_watch (fs_fd, path, mask);	2605	w->wd = inotify_add_watch (fs_fd, path, mask);
2454	}	2606	}
2455	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2607	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2456	}	2608	}
2457	}	2609	}
2458	else
2459	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2460		2610
2461	if (w->wd >= 0)	2611	if (w->wd >= 0)
		2612	{
2462	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2613	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2614
		2615	/* now local changes will be tracked by inotify, but remote changes won't */
		2616	/* unless the filesystem it known to be local, we therefore still poll */
		2617	/* also do poll on <2.6.25, but with normal frequency */
		2618	struct statfs sfs;
		2619
		2620	if (fs_2625 && !statfs (w->path, &sfs))
		2621	if (sfs.f_type == 0x1373 /* devfs */
		2622	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2623	|| sfs.f_type == 0x3153464a /* jfs */
		2624	|| sfs.f_type == 0x52654973 /* reiser3 */
		2625	|| sfs.f_type == 0x01021994 /* tempfs */
		2626	|| sfs.f_type == 0x58465342 /* xfs */)
		2627	return;
		2628
		2629	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2630	ev_timer_again (EV_A_ &w->timer);
		2631	}
2463	}	2632	}
2464		2633
2465	static void noinline	2634	static void noinline
2466	infy_del (EV_P_ ev_stat *w)	2635	infy_del (EV_P_ ev_stat *w)
2467	{	2636	{
…		…
2481		2650
2482	static void noinline	2651	static void noinline
2483	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2652	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2484	{	2653	{
2485	if (slot < 0)	2654	if (slot < 0)
2486	/* overflow, need to check for all hahs slots */	2655	/* overflow, need to check for all hash slots */
2487	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2656	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2488	infy_wd (EV_A_ slot, wd, ev);	2657	infy_wd (EV_A_ slot, wd, ev);
2489	else	2658	else
2490	{	2659	{
2491	WL w_;	2660	WL w_;
…		…
2497		2666
2498	if (w->wd == wd || wd == -1)	2667	if (w->wd == wd || wd == -1)
2499	{	2668	{
2500	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2669	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2501	{	2670	{
		2671	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2502	w->wd = -1;	2672	w->wd = -1;
2503	infy_add (EV_A_ w); /* re-add, no matter what */	2673	infy_add (EV_A_ w); /* re-add, no matter what */
2504	}	2674	}
2505		2675
2506	stat_timer_cb (EV_A_ &w->timer, 0);	2676	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2519		2689
2520	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2690	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2521	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2691	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2522	}	2692	}
2523		2693
2524	void inline_size	2694	inline_size void
		2695	check_2625 (EV_P)
		2696	{
		2697	/* kernels < 2.6.25 are borked
		2698	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2699	*/
		2700	struct utsname buf;
		2701	int major, minor, micro;
		2702
		2703	if (uname (&buf))
		2704	return;
		2705
		2706	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2707	return;
		2708
		2709	if (major < 2
		2710	|| (major == 2 && minor < 6)
		2711	|| (major == 2 && minor == 6 && micro < 25))
		2712	return;
		2713
		2714	fs_2625 = 1;
		2715	}
		2716
		2717	inline_size void
2525	infy_init (EV_P)	2718	infy_init (EV_P)
2526	{	2719	{
2527	if (fs_fd != -2)	2720	if (fs_fd != -2)
2528	return;	2721	return;
		2722
		2723	fs_fd = -1;
		2724
		2725	check_2625 (EV_A);
2529		2726
2530	fs_fd = inotify_init ();	2727	fs_fd = inotify_init ();
2531		2728
2532	if (fs_fd >= 0)	2729	if (fs_fd >= 0)
2533	{	2730	{
…		…
2535	ev_set_priority (&fs_w, EV_MAXPRI);	2732	ev_set_priority (&fs_w, EV_MAXPRI);
2536	ev_io_start (EV_A_ &fs_w);	2733	ev_io_start (EV_A_ &fs_w);
2537	}	2734	}
2538	}	2735	}
2539		2736
2540	void inline_size	2737	inline_size void
2541	infy_fork (EV_P)	2738	infy_fork (EV_P)
2542	{	2739	{
2543	int slot;	2740	int slot;
2544		2741
2545	if (fs_fd < 0)	2742	if (fs_fd < 0)
…		…
2561	w->wd = -1;	2758	w->wd = -1;
2562		2759
2563	if (fs_fd >= 0)	2760	if (fs_fd >= 0)
2564	infy_add (EV_A_ w); /* re-add, no matter what */	2761	infy_add (EV_A_ w); /* re-add, no matter what */
2565	else	2762	else
2566	ev_timer_start (EV_A_ &w->timer);	2763	ev_timer_again (EV_A_ &w->timer);
2567	}	2764	}
2568
2569	}	2765	}
2570	}	2766	}
2571		2767
		2768	#endif
		2769
		2770	#ifdef _WIN32
		2771	# define EV_LSTAT(p,b) _stati64 (p, b)
		2772	#else
		2773	# define EV_LSTAT(p,b) lstat (p, b)
2572	#endif	2774	#endif
2573		2775
2574	void	2776	void
2575	ev_stat_stat (EV_P_ ev_stat *w)	2777	ev_stat_stat (EV_P_ ev_stat *w)
2576	{	2778	{
…		…
2603	|| w->prev.st_atime != w->attr.st_atime	2805	|| w->prev.st_atime != w->attr.st_atime
2604	|| w->prev.st_mtime != w->attr.st_mtime	2806	|| w->prev.st_mtime != w->attr.st_mtime
2605	|| w->prev.st_ctime != w->attr.st_ctime	2807	|| w->prev.st_ctime != w->attr.st_ctime
2606	) {	2808	) {
2607	#if EV_USE_INOTIFY	2809	#if EV_USE_INOTIFY
		2810	if (fs_fd >= 0)
		2811	{
2608	infy_del (EV_A_ w);	2812	infy_del (EV_A_ w);
2609	infy_add (EV_A_ w);	2813	infy_add (EV_A_ w);
2610	ev_stat_stat (EV_A_ w); /* avoid race... */	2814	ev_stat_stat (EV_A_ w); /* avoid race... */
		2815	}
2611	#endif	2816	#endif
2612		2817
2613	ev_feed_event (EV_A_ w, EV_STAT);	2818	ev_feed_event (EV_A_ w, EV_STAT);
2614	}	2819	}
2615	}	2820	}
…		…
2618	ev_stat_start (EV_P_ ev_stat *w)	2823	ev_stat_start (EV_P_ ev_stat *w)
2619	{	2824	{
2620	if (expect_false (ev_is_active (w)))	2825	if (expect_false (ev_is_active (w)))
2621	return;	2826	return;
2622		2827
2623	/* since we use memcmp, we need to clear any padding data etc. */
2624	memset (&w->prev, 0, sizeof (ev_statdata));
2625	memset (&w->attr, 0, sizeof (ev_statdata));
2626
2627	ev_stat_stat (EV_A_ w);	2828	ev_stat_stat (EV_A_ w);
2628		2829
		2830	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2629	if (w->interval < MIN_STAT_INTERVAL)	2831	w->interval = MIN_STAT_INTERVAL;
2630	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2631		2832
2632	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2833	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2633	ev_set_priority (&w->timer, ev_priority (w));	2834	ev_set_priority (&w->timer, ev_priority (w));
2634		2835
2635	#if EV_USE_INOTIFY	2836	#if EV_USE_INOTIFY
2636	infy_init (EV_A);	2837	infy_init (EV_A);
2637		2838
2638	if (fs_fd >= 0)	2839	if (fs_fd >= 0)
2639	infy_add (EV_A_ w);	2840	infy_add (EV_A_ w);
2640	else	2841	else
2641	#endif	2842	#endif
2642	ev_timer_start (EV_A_ &w->timer);	2843	ev_timer_again (EV_A_ &w->timer);
2643		2844
2644	ev_start (EV_A_ (W)w, 1);	2845	ev_start (EV_A_ (W)w, 1);
2645		2846
2646	EV_FREQUENT_CHECK;	2847	EV_FREQUENT_CHECK;
2647	}	2848	}
…		…
2817	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3018	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2818	}	3019	}
2819	}	3020	}
2820	}	3021	}
2821		3022
		3023	static void
		3024	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3025	{
		3026	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3027
		3028	ev_embed_stop (EV_A_ w);
		3029
		3030	{
		3031	struct ev_loop *loop = w->other;
		3032
		3033	ev_loop_fork (EV_A);
		3034	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3035	}
		3036
		3037	ev_embed_start (EV_A_ w);
		3038	}
		3039
2822	#if 0	3040	#if 0
2823	static void	3041	static void
2824	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3042	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2825	{	3043	{
2826	ev_idle_stop (EV_A_ idle);	3044	ev_idle_stop (EV_A_ idle);
…		…
2833	if (expect_false (ev_is_active (w)))	3051	if (expect_false (ev_is_active (w)))
2834	return;	3052	return;
2835		3053
2836	{	3054	{
2837	struct ev_loop *loop = w->other;	3055	struct ev_loop *loop = w->other;
2838	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3056	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2839	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3057	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2840	}	3058	}
2841		3059
2842	EV_FREQUENT_CHECK;	3060	EV_FREQUENT_CHECK;
2843		3061
…		…
2846		3064
2847	ev_prepare_init (&w->prepare, embed_prepare_cb);	3065	ev_prepare_init (&w->prepare, embed_prepare_cb);
2848	ev_set_priority (&w->prepare, EV_MINPRI);	3066	ev_set_priority (&w->prepare, EV_MINPRI);
2849	ev_prepare_start (EV_A_ &w->prepare);	3067	ev_prepare_start (EV_A_ &w->prepare);
2850		3068
		3069	ev_fork_init (&w->fork, embed_fork_cb);
		3070	ev_fork_start (EV_A_ &w->fork);
		3071
2851	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3072	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2852		3073
2853	ev_start (EV_A_ (W)w, 1);	3074	ev_start (EV_A_ (W)w, 1);
2854		3075
2855	EV_FREQUENT_CHECK;	3076	EV_FREQUENT_CHECK;
…		…
2862	if (expect_false (!ev_is_active (w)))	3083	if (expect_false (!ev_is_active (w)))
2863	return;	3084	return;
2864		3085
2865	EV_FREQUENT_CHECK;	3086	EV_FREQUENT_CHECK;
2866		3087
2867	ev_io_stop (EV_A_ &w->io);	3088	ev_io_stop (EV_A_ &w->io);
2868	ev_prepare_stop (EV_A_ &w->prepare);	3089	ev_prepare_stop (EV_A_ &w->prepare);
2869		3090	ev_fork_stop (EV_A_ &w->fork);
2870	ev_stop (EV_A_ (W)w);
2871		3091
2872	EV_FREQUENT_CHECK;	3092	EV_FREQUENT_CHECK;
2873	}	3093	}
2874	#endif	3094	#endif
2875		3095
…		…
2972	once_cb (EV_P_ struct ev_once *once, int revents)	3192	once_cb (EV_P_ struct ev_once *once, int revents)
2973	{	3193	{
2974	void (*cb)(int revents, void *arg) = once->cb;	3194	void (*cb)(int revents, void *arg) = once->cb;
2975	void *arg = once->arg;	3195	void *arg = once->arg;
2976		3196
2977	ev_io_stop (EV_A_ &once->io);	3197	ev_io_stop (EV_A_ &once->io);
2978	ev_timer_stop (EV_A_ &once->to);	3198	ev_timer_stop (EV_A_ &once->to);
2979	ev_free (once);	3199	ev_free (once);
2980		3200
2981	cb (revents, arg);	3201	cb (revents, arg);
2982	}	3202	}
2983		3203
2984	static void	3204	static void
2985	once_cb_io (EV_P_ ev_io *w, int revents)	3205	once_cb_io (EV_P_ ev_io *w, int revents)
2986	{	3206	{
2987	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3207	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3208
		3209	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2988	}	3210	}
2989		3211
2990	static void	3212	static void
2991	once_cb_to (EV_P_ ev_timer *w, int revents)	3213	once_cb_to (EV_P_ ev_timer *w, int revents)
2992	{	3214	{
2993	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3215	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3216
		3217	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2994	}	3218	}
2995		3219
2996	void	3220	void
2997	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3221	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2998	{	3222	{
…		…
3020	ev_timer_set (&once->to, timeout, 0.);	3244	ev_timer_set (&once->to, timeout, 0.);
3021	ev_timer_start (EV_A_ &once->to);	3245	ev_timer_start (EV_A_ &once->to);
3022	}	3246	}
3023	}	3247	}
3024		3248
		3249	/*****************************************************************************/
		3250
		3251	#if EV_WALK_ENABLE
		3252	void
		3253	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3254	{
		3255	int i, j;
		3256	ev_watcher_list *wl, *wn;
		3257
		3258	if (types & (EV_IO | EV_EMBED))
		3259	for (i = 0; i < anfdmax; ++i)
		3260	for (wl = anfds [i].head; wl; )
		3261	{
		3262	wn = wl->next;
		3263
		3264	#if EV_EMBED_ENABLE
		3265	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3266	{
		3267	if (types & EV_EMBED)
		3268	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3269	}
		3270	else
		3271	#endif
		3272	#if EV_USE_INOTIFY
		3273	if (ev_cb ((ev_io *)wl) == infy_cb)
		3274	;
		3275	else
		3276	#endif
		3277	if ((ev_io *)wl != &pipe_w)
		3278	if (types & EV_IO)
		3279	cb (EV_A_ EV_IO, wl);
		3280
		3281	wl = wn;
		3282	}
		3283
		3284	if (types & (EV_TIMER | EV_STAT))
		3285	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3286	#if EV_STAT_ENABLE
		3287	/*TODO: timer is not always active*/
		3288	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3289	{
		3290	if (types & EV_STAT)
		3291	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3292	}
		3293	else
		3294	#endif
		3295	if (types & EV_TIMER)
		3296	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3297
		3298	#if EV_PERIODIC_ENABLE
		3299	if (types & EV_PERIODIC)
		3300	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3301	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3302	#endif
		3303
		3304	#if EV_IDLE_ENABLE
		3305	if (types & EV_IDLE)
		3306	for (j = NUMPRI; i--; )
		3307	for (i = idlecnt [j]; i--; )
		3308	cb (EV_A_ EV_IDLE, idles [j][i]);
		3309	#endif
		3310
		3311	#if EV_FORK_ENABLE
		3312	if (types & EV_FORK)
		3313	for (i = forkcnt; i--; )
		3314	if (ev_cb (forks [i]) != embed_fork_cb)
		3315	cb (EV_A_ EV_FORK, forks [i]);
		3316	#endif
		3317
		3318	#if EV_ASYNC_ENABLE
		3319	if (types & EV_ASYNC)
		3320	for (i = asynccnt; i--; )
		3321	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3322	#endif
		3323
		3324	if (types & EV_PREPARE)
		3325	for (i = preparecnt; i--; )
		3326	#if EV_EMBED_ENABLE
		3327	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3328	#endif
		3329	cb (EV_A_ EV_PREPARE, prepares [i]);
		3330
		3331	if (types & EV_CHECK)
		3332	for (i = checkcnt; i--; )
		3333	cb (EV_A_ EV_CHECK, checks [i]);
		3334
		3335	if (types & EV_SIGNAL)
		3336	for (i = 0; i < signalmax; ++i)
		3337	for (wl = signals [i].head; wl; )
		3338	{
		3339	wn = wl->next;
		3340	cb (EV_A_ EV_SIGNAL, wl);
		3341	wl = wn;
		3342	}
		3343
		3344	if (types & EV_CHILD)
		3345	for (i = EV_PID_HASHSIZE; i--; )
		3346	for (wl = childs [i]; wl; )
		3347	{
		3348	wn = wl->next;
		3349	cb (EV_A_ EV_CHILD, wl);
		3350	wl = wn;
		3351	}
		3352	/* EV_STAT 0x00001000 /* stat data changed */
		3353	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3354	}
		3355	#endif
		3356
3025	#if EV_MULTIPLICITY	3357	#if EV_MULTIPLICITY
3026	#include "ev_wrap.h"	3358	#include "ev_wrap.h"
3027	#endif	3359	#endif
3028		3360
3029	#ifdef __cplusplus	3361	#ifdef __cplusplus

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