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Comparing libev/ev.c (file contents):
Revision 1.250 by root, Thu May 22 02:44:57 2008 UTC vs.
Revision 1.293 by root, Mon Jun 29 18:46:52 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 */
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
…		…
253		284
254	#ifndef EV_HEAP_CACHE_AT	285	#ifndef EV_HEAP_CACHE_AT
255	# define EV_HEAP_CACHE_AT !EV_MINIMAL	286	# define EV_HEAP_CACHE_AT !EV_MINIMAL
256	#endif	287	#endif
257		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
258	/* 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 */
259		304
260	#ifndef CLOCK_MONOTONIC	305	#ifndef CLOCK_MONOTONIC
261	# undef EV_USE_MONOTONIC	306	# undef EV_USE_MONOTONIC
262	# define EV_USE_MONOTONIC 0	307	# define EV_USE_MONOTONIC 0
…		…
277	# include <sys/select.h>	322	# include <sys/select.h>
278	# endif	323	# endif
279	#endif	324	#endif
280		325
281	#if EV_USE_INOTIFY	326	#if EV_USE_INOTIFY
		327	# include <sys/utsname.h>
		328	# include <sys/statfs.h>
282	# 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
283	#endif	335	#endif
284		336
285	#if EV_SELECT_IS_WINSOCKET	337	#if EV_SELECT_IS_WINSOCKET
286	# include <winsock.h>	338	# include <winsock.h>
287	#endif	339	#endif
…		…
352	typedef ev_watcher_time *WT;	404	typedef ev_watcher_time *WT;
353		405
354	#define ev_active(w) ((W)(w))->active	406	#define ev_active(w) ((W)(w))->active
355	#define ev_at(w) ((WT)(w))->at	407	#define ev_at(w) ((WT)(w))->at
356		408
357	#if EV_USE_MONOTONIC	409	#if EV_USE_REALTIME
358	/* 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 */
359	/* 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
360	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? */
361	#endif	417	#endif
362		418
363	#ifdef _WIN32	419	#ifdef _WIN32
364	# include "ev_win32.c"	420	# include "ev_win32.c"
…		…
373	{	429	{
374	syserr_cb = cb;	430	syserr_cb = cb;
375	}	431	}
376		432
377	static void noinline	433	static void noinline
378	syserr (const char *msg)	434	ev_syserr (const char *msg)
379	{	435	{
380	if (!msg)	436	if (!msg)
381	msg = "(libev) system error";	437	msg = "(libev) system error";
382		438
383	if (syserr_cb)	439	if (syserr_cb)
…		…
429	#define ev_malloc(size) ev_realloc (0, (size))	485	#define ev_malloc(size) ev_realloc (0, (size))
430	#define ev_free(ptr) ev_realloc ((ptr), 0)	486	#define ev_free(ptr) ev_realloc ((ptr), 0)
431		487
432	/*****************************************************************************/	488	/*****************************************************************************/
433		489
		490	/* file descriptor info structure */
434	typedef struct	491	typedef struct
435	{	492	{
436	WL head;	493	WL head;
437	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 */
438	unsigned char reify;	497	unsigned char unused;
		498	#if EV_USE_EPOLL
		499	unsigned int egen; /* generation counter to counter epoll bugs */
		500	#endif
439	#if EV_SELECT_IS_WINSOCKET	501	#if EV_SELECT_IS_WINSOCKET
440	SOCKET handle;	502	SOCKET handle;
441	#endif	503	#endif
442	} ANFD;	504	} ANFD;
443		505
		506	/* stores the pending event set for a given watcher */
444	typedef struct	507	typedef struct
445	{	508	{
446	W w;	509	W w;
447	int events;	510	int events; /* the pending event set for the given watcher */
448	} ANPENDING;	511	} ANPENDING;
449		512
450	#if EV_USE_INOTIFY	513	#if EV_USE_INOTIFY
451	/* hash table entry per inotify-id */	514	/* hash table entry per inotify-id */
452	typedef struct	515	typedef struct
…		…
455	} ANFS;	518	} ANFS;
456	#endif	519	#endif
457		520
458	/* Heap Entry */	521	/* Heap Entry */
459	#if EV_HEAP_CACHE_AT	522	#if EV_HEAP_CACHE_AT
		523	/* a heap element */
460	typedef struct {	524	typedef struct {
461	ev_tstamp at;	525	ev_tstamp at;
462	WT w;	526	WT w;
463	} ANHE;	527	} ANHE;
464		528
465	#define ANHE_w(he) (he).w /* access watcher, read-write */	529	#define ANHE_w(he) (he).w /* access watcher, read-write */
466	#define ANHE_at(he) (he).at /* access cached at, read-only */	530	#define ANHE_at(he) (he).at /* access cached at, read-only */
467	#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 */
468	#else	532	#else
		533	/* a heap element */
469	typedef WT ANHE;	534	typedef WT ANHE;
470		535
471	#define ANHE_w(he) (he)	536	#define ANHE_w(he) (he)
472	#define ANHE_at(he) (he)->at	537	#define ANHE_at(he) (he)->at
473	#define ANHE_at_cache(he)	538	#define ANHE_at_cache(he)
…		…
499		564
500	#endif	565	#endif
501		566
502	/*****************************************************************************/	567	/*****************************************************************************/
503		568
		569	#ifndef EV_HAVE_EV_TIME
504	ev_tstamp	570	ev_tstamp
505	ev_time (void)	571	ev_time (void)
506	{	572	{
507	#if EV_USE_REALTIME	573	#if EV_USE_REALTIME
		574	if (expect_true (have_realtime))
		575	{
508	struct timespec ts;	576	struct timespec ts;
509	clock_gettime (CLOCK_REALTIME, &ts);	577	clock_gettime (CLOCK_REALTIME, &ts);
510	return ts.tv_sec + ts.tv_nsec * 1e-9;	578	return ts.tv_sec + ts.tv_nsec * 1e-9;
511	#else	579	}
		580	#endif
		581
512	struct timeval tv;	582	struct timeval tv;
513	gettimeofday (&tv, 0);	583	gettimeofday (&tv, 0);
514	return tv.tv_sec + tv.tv_usec * 1e-6;	584	return tv.tv_sec + tv.tv_usec * 1e-6;
515	#endif
516	}	585	}
		586	#endif
517		587
518	ev_tstamp inline_size	588	inline_size ev_tstamp
519	get_clock (void)	589	get_clock (void)
520	{	590	{
521	#if EV_USE_MONOTONIC	591	#if EV_USE_MONOTONIC
522	if (expect_true (have_monotonic))	592	if (expect_true (have_monotonic))
523	{	593	{
…		…
556	struct timeval tv;	626	struct timeval tv;
557		627
558	tv.tv_sec = (time_t)delay;	628	tv.tv_sec = (time_t)delay;
559	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	629	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
560		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 */
561	select (0, 0, 0, 0, &tv);	634	select (0, 0, 0, 0, &tv);
562	#endif	635	#endif
563	}	636	}
564	}	637	}
565		638
566	/*****************************************************************************/	639	/*****************************************************************************/
567		640
568	#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 */
569		642
570	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
571	array_nextsize (int elem, int cur, int cnt)	646	array_nextsize (int elem, int cur, int cnt)
572	{	647	{
573	int ncur = cur + 1;	648	int ncur = cur + 1;
574		649
575	do	650	do
…		…
592	array_realloc (int elem, void *base, int *cur, int cnt)	667	array_realloc (int elem, void *base, int *cur, int cnt)
593	{	668	{
594	*cur = array_nextsize (elem, *cur, cnt);	669	*cur = array_nextsize (elem, *cur, cnt);
595	return ev_realloc (base, elem * *cur);	670	return ev_realloc (base, elem * *cur);
596	}	671	}
		672
		673	#define array_init_zero(base,count) \
		674	memset ((void *)(base), 0, sizeof (*(base)) * (count))
597		675
598	#define array_needsize(type,base,cur,cnt,init) \	676	#define array_needsize(type,base,cur,cnt,init) \
599	if (expect_false ((cnt) > (cur))) \	677	if (expect_false ((cnt) > (cur))) \
600	{ \	678	{ \
601	int ocur_ = (cur); \	679	int ocur_ = (cur); \
…		…
613	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	691	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
614	}	692	}
615	#endif	693	#endif
616		694
617	#define array_free(stem, idx) \	695	#define array_free(stem, idx) \
618	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
619		697
620	/*****************************************************************************/	698	/*****************************************************************************/
		699
		700	/* dummy callback for pending events */
		701	static void noinline
		702	pendingcb (EV_P_ ev_prepare *w, int revents)
		703	{
		704	}
621		705
622	void noinline	706	void noinline
623	ev_feed_event (EV_P_ void *w, int revents)	707	ev_feed_event (EV_P_ void *w, int revents)
624	{	708	{
625	W w_ = (W)w;	709	W w_ = (W)w;
…		…
634	pendings [pri][w_->pending - 1].w = w_;	718	pendings [pri][w_->pending - 1].w = w_;
635	pendings [pri][w_->pending - 1].events = revents;	719	pendings [pri][w_->pending - 1].events = revents;
636	}	720	}
637	}	721	}
638		722
639	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
640	queue_events (EV_P_ W *events, int eventcnt, int type)	739	queue_events (EV_P_ W *events, int eventcnt, int type)
641	{	740	{
642	int i;	741	int i;
643		742
644	for (i = 0; i < eventcnt; ++i)	743	for (i = 0; i < eventcnt; ++i)
645	ev_feed_event (EV_A_ events [i], type);	744	ev_feed_event (EV_A_ events [i], type);
646	}	745	}
647		746
648	/*****************************************************************************/	747	/*****************************************************************************/
649		748
650	void inline_size	749	inline_speed void
651	anfds_init (ANFD *base, int count)
652	{
653	while (count--)
654	{
655	base->head = 0;
656	base->events = EV_NONE;
657	base->reify = 0;
658
659	++base;
660	}
661	}
662
663	void inline_speed
664	fd_event (EV_P_ int fd, int revents)	750	fd_event (EV_P_ int fd, int revents)
665	{	751	{
666	ANFD *anfd = anfds + fd;	752	ANFD *anfd = anfds + fd;
667	ev_io *w;	753	ev_io *w;
668		754
…		…
680	{	766	{
681	if (fd >= 0 && fd < anfdmax)	767	if (fd >= 0 && fd < anfdmax)
682	fd_event (EV_A_ fd, revents);	768	fd_event (EV_A_ fd, revents);
683	}	769	}
684		770
685	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
686	fd_reify (EV_P)	774	fd_reify (EV_P)
687	{	775	{
688	int i;	776	int i;
689		777
690	for (i = 0; i < fdchangecnt; ++i)	778	for (i = 0; i < fdchangecnt; ++i)
…		…
699	events |= (unsigned char)w->events;	787	events |= (unsigned char)w->events;
700		788
701	#if EV_SELECT_IS_WINSOCKET	789	#if EV_SELECT_IS_WINSOCKET
702	if (events)	790	if (events)
703	{	791	{
704	unsigned long argp;	792	unsigned long arg;
705	#ifdef EV_FD_TO_WIN32_HANDLE	793	#ifdef EV_FD_TO_WIN32_HANDLE
706	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	794	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
707	#else	795	#else
708	anfd->handle = _get_osfhandle (fd);	796	anfd->handle = _get_osfhandle (fd);
709	#endif	797	#endif
710	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));
711	}	799	}
712	#endif	800	#endif
713		801
714	{	802	{
715	unsigned char o_events = anfd->events;	803	unsigned char o_events = anfd->events;
716	unsigned char o_reify = anfd->reify;	804	unsigned char o_reify = anfd->reify;
717		805
718	anfd->reify = 0;	806	anfd->reify = 0;
719	anfd->events = events;	807	anfd->events = events;
720		808
721	if (o_events != events || o_reify & EV_IOFDSET)	809	if (o_events != events || o_reify & EV__IOFDSET)
722	backend_modify (EV_A_ fd, o_events, events);	810	backend_modify (EV_A_ fd, o_events, events);
723	}	811	}
724	}	812	}
725		813
726	fdchangecnt = 0;	814	fdchangecnt = 0;
727	}	815	}
728		816
729	void inline_size	817	/* something about the given fd changed */
		818	inline_size void
730	fd_change (EV_P_ int fd, int flags)	819	fd_change (EV_P_ int fd, int flags)
731	{	820	{
732	unsigned char reify = anfds [fd].reify;	821	unsigned char reify = anfds [fd].reify;
733	anfds [fd].reify |= flags;	822	anfds [fd].reify |= flags;
734		823
…		…
738	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	827	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
739	fdchanges [fdchangecnt - 1] = fd;	828	fdchanges [fdchangecnt - 1] = fd;
740	}	829	}
741	}	830	}
742		831
743	void inline_speed	832	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		833	inline_speed void
744	fd_kill (EV_P_ int fd)	834	fd_kill (EV_P_ int fd)
745	{	835	{
746	ev_io *w;	836	ev_io *w;
747		837
748	while ((w = (ev_io *)anfds [fd].head))	838	while ((w = (ev_io *)anfds [fd].head))
…		…
750	ev_io_stop (EV_A_ w);	840	ev_io_stop (EV_A_ w);
751	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);
752	}	842	}
753	}	843	}
754		844
755	int inline_size	845	/* check whether the given fd is atcually valid, for error recovery */
		846	inline_size int
756	fd_valid (int fd)	847	fd_valid (int fd)
757	{	848	{
758	#ifdef _WIN32	849	#ifdef _WIN32
759	return _get_osfhandle (fd) != -1;	850	return _get_osfhandle (fd) != -1;
760	#else	851	#else
…		…
768	{	859	{
769	int fd;	860	int fd;
770		861
771	for (fd = 0; fd < anfdmax; ++fd)	862	for (fd = 0; fd < anfdmax; ++fd)
772	if (anfds [fd].events)	863	if (anfds [fd].events)
773	if (!fd_valid (fd) == -1 && errno == EBADF)	864	if (!fd_valid (fd) && errno == EBADF)
774	fd_kill (EV_A_ fd);	865	fd_kill (EV_A_ fd);
775	}	866	}
776		867
777	/* 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 */
778	static void noinline	869	static void noinline
…		…
796		887
797	for (fd = 0; fd < anfdmax; ++fd)	888	for (fd = 0; fd < anfdmax; ++fd)
798	if (anfds [fd].events)	889	if (anfds [fd].events)
799	{	890	{
800	anfds [fd].events = 0;	891	anfds [fd].events = 0;
		892	anfds [fd].emask = 0;
801	fd_change (EV_A_ fd, EV_IOFDSET | 1);	893	fd_change (EV_A_ fd, EV__IOFDSET | 1);
802	}	894	}
803	}	895	}
804		896
805	/*****************************************************************************/	897	/*****************************************************************************/
806		898
…		…
822	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	914	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
823	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)	915	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
824	#define UPHEAP_DONE(p,k) ((p) == (k))	916	#define UPHEAP_DONE(p,k) ((p) == (k))
825		917
826	/* away from the root */	918	/* away from the root */
827	void inline_speed	919	inline_speed void
828	downheap (ANHE *heap, int N, int k)	920	downheap (ANHE *heap, int N, int k)
829	{	921	{
830	ANHE he = heap [k];	922	ANHE he = heap [k];
831	ANHE *E = heap + N + HEAP0;	923	ANHE *E = heap + N + HEAP0;
832		924
…		…
872	#define HEAP0 1	964	#define HEAP0 1
873	#define HPARENT(k) ((k) >> 1)	965	#define HPARENT(k) ((k) >> 1)
874	#define UPHEAP_DONE(p,k) (!(p))	966	#define UPHEAP_DONE(p,k) (!(p))
875		967
876	/* away from the root */	968	/* away from the root */
877	void inline_speed	969	inline_speed void
878	downheap (ANHE *heap, int N, int k)	970	downheap (ANHE *heap, int N, int k)
879	{	971	{
880	ANHE he = heap [k];	972	ANHE he = heap [k];
881		973
882	for (;;)	974	for (;;)
…		…
902	ev_active (ANHE_w (he)) = k;	994	ev_active (ANHE_w (he)) = k;
903	}	995	}
904	#endif	996	#endif
905		997
906	/* towards the root */	998	/* towards the root */
907	void inline_speed	999	inline_speed void
908	upheap (ANHE *heap, int k)	1000	upheap (ANHE *heap, int k)
909	{	1001	{
910	ANHE he = heap [k];	1002	ANHE he = heap [k];
911		1003
912	for (;;)	1004	for (;;)
…		…
923		1015
924	heap [k] = he;	1016	heap [k] = he;
925	ev_active (ANHE_w (he)) = k;	1017	ev_active (ANHE_w (he)) = k;
926	}	1018	}
927		1019
928	void inline_size	1020	/* move an element suitably so it is in a correct place */
		1021	inline_size void
929	adjustheap (ANHE *heap, int N, int k)	1022	adjustheap (ANHE *heap, int N, int k)
930	{	1023	{
931	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1024	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
932	upheap (heap, k);	1025	upheap (heap, k);
933	else	1026	else
934	downheap (heap, N, k);	1027	downheap (heap, N, k);
935	}	1028	}
936		1029
937	/* rebuild the heap: this function is used only once and executed rarely */	1030	/* rebuild the heap: this function is used only once and executed rarely */
938	void inline_size	1031	inline_size void
939	reheap (ANHE *heap, int N)	1032	reheap (ANHE *heap, int N)
940	{	1033	{
941	int i;	1034	int i;
		1035
942	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */	1036	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
943	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */	1037	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
944	for (i = 0; i < N; ++i)	1038	for (i = 0; i < N; ++i)
945	upheap (heap, i + HEAP0);	1039	upheap (heap, i + HEAP0);
946	}	1040	}
947		1041
948	#if EV_VERIFY
949	static void
950	checkheap (ANHE *heap, int N)
951	{
952	int i;
953
954	for (i = HEAP0; i < N + HEAP0; ++i)
955	{
956	assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
957	assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
958	assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
959	}
960	}
961	#endif
962
963	/*****************************************************************************/	1042	/*****************************************************************************/
964		1043
		1044	/* associate signal watchers to a signal signal */
965	typedef struct	1045	typedef struct
966	{	1046	{
967	WL head;	1047	WL head;
968	EV_ATOMIC_T gotsig;	1048	EV_ATOMIC_T gotsig;
969	} ANSIG;	1049	} ANSIG;
…		…
971	static ANSIG *signals;	1051	static ANSIG *signals;
972	static int signalmax;	1052	static int signalmax;
973		1053
974	static EV_ATOMIC_T gotsig;	1054	static EV_ATOMIC_T gotsig;
975		1055
976	void inline_size
977	signals_init (ANSIG *base, int count)
978	{
979	while (count--)
980	{
981	base->head = 0;
982	base->gotsig = 0;
983
984	++base;
985	}
986	}
987
988	/*****************************************************************************/	1056	/*****************************************************************************/
989		1057
990	void inline_speed	1058	/* used to prepare libev internal fd's */
		1059	/* this is not fork-safe */
		1060	inline_speed void
991	fd_intern (int fd)	1061	fd_intern (int fd)
992	{	1062	{
993	#ifdef _WIN32	1063	#ifdef _WIN32
994	int arg = 1;	1064	unsigned long arg = 1;
995	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1065	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
996	#else	1066	#else
997	fcntl (fd, F_SETFD, FD_CLOEXEC);	1067	fcntl (fd, F_SETFD, FD_CLOEXEC);
998	fcntl (fd, F_SETFL, O_NONBLOCK);	1068	fcntl (fd, F_SETFL, O_NONBLOCK);
999	#endif	1069	#endif
1000	}	1070	}
1001		1071
1002	static void noinline	1072	static void noinline
1003	evpipe_init (EV_P)	1073	evpipe_init (EV_P)
1004	{	1074	{
1005	if (!ev_is_active (&pipeev))	1075	if (!ev_is_active (&pipe_w))
1006	{	1076	{
1007	#if EV_USE_EVENTFD	1077	#if EV_USE_EVENTFD
1008	if ((evfd = eventfd (0, 0)) >= 0)	1078	if ((evfd = eventfd (0, 0)) >= 0)
1009	{	1079	{
1010	evpipe [0] = -1;	1080	evpipe [0] = -1;
1011	fd_intern (evfd);	1081	fd_intern (evfd);
1012	ev_io_set (&pipeev, evfd, EV_READ);	1082	ev_io_set (&pipe_w, evfd, EV_READ);
1013	}	1083	}
1014	else	1084	else
1015	#endif	1085	#endif
1016	{	1086	{
1017	while (pipe (evpipe))	1087	while (pipe (evpipe))
1018	syserr ("(libev) error creating signal/async pipe");	1088	ev_syserr ("(libev) error creating signal/async pipe");
1019		1089
1020	fd_intern (evpipe [0]);	1090	fd_intern (evpipe [0]);
1021	fd_intern (evpipe [1]);	1091	fd_intern (evpipe [1]);
1022	ev_io_set (&pipeev, evpipe [0], EV_READ);	1092	ev_io_set (&pipe_w, evpipe [0], EV_READ);
1023	}	1093	}
1024		1094
1025	ev_io_start (EV_A_ &pipeev);	1095	ev_io_start (EV_A_ &pipe_w);
1026	ev_unref (EV_A); /* watcher should not keep loop alive */	1096	ev_unref (EV_A); /* watcher should not keep loop alive */
1027	}	1097	}
1028	}	1098	}
1029		1099
1030	void inline_size	1100	inline_size void
1031	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1101	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1032	{	1102	{
1033	if (!*flag)	1103	if (!*flag)
1034	{	1104	{
1035	int old_errno = errno; /* save errno because write might clobber it */	1105	int old_errno = errno; /* save errno because write might clobber it */
…		…
1048		1118
1049	errno = old_errno;	1119	errno = old_errno;
1050	}	1120	}
1051	}	1121	}
1052		1122
		1123	/* called whenever the libev signal pipe */
		1124	/* got some events (signal, async) */
1053	static void	1125	static void
1054	pipecb (EV_P_ ev_io *iow, int revents)	1126	pipecb (EV_P_ ev_io *iow, int revents)
1055	{	1127	{
1056	#if EV_USE_EVENTFD	1128	#if EV_USE_EVENTFD
1057	if (evfd >= 0)	1129	if (evfd >= 0)
…		…
1113	ev_feed_signal_event (EV_P_ int signum)	1185	ev_feed_signal_event (EV_P_ int signum)
1114	{	1186	{
1115	WL w;	1187	WL w;
1116		1188
1117	#if EV_MULTIPLICITY	1189	#if EV_MULTIPLICITY
1118	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));
1119	#endif	1191	#endif
1120		1192
1121	--signum;	1193	--signum;
1122		1194
1123	if (signum < 0 || signum >= signalmax)	1195	if (signum < 0 || signum >= signalmax)
…		…
1139		1211
1140	#ifndef WIFCONTINUED	1212	#ifndef WIFCONTINUED
1141	# define WIFCONTINUED(status) 0	1213	# define WIFCONTINUED(status) 0
1142	#endif	1214	#endif
1143		1215
1144	void inline_speed	1216	/* handle a single child status event */
		1217	inline_speed void
1145	child_reap (EV_P_ int chain, int pid, int status)	1218	child_reap (EV_P_ int chain, int pid, int status)
1146	{	1219	{
1147	ev_child *w;	1220	ev_child *w;
1148	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1221	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1149		1222
…		…
1162		1235
1163	#ifndef WCONTINUED	1236	#ifndef WCONTINUED
1164	# define WCONTINUED 0	1237	# define WCONTINUED 0
1165	#endif	1238	#endif
1166		1239
		1240	/* called on sigchld etc., calls waitpid */
1167	static void	1241	static void
1168	childcb (EV_P_ ev_signal *sw, int revents)	1242	childcb (EV_P_ ev_signal *sw, int revents)
1169	{	1243	{
1170	int pid, status;	1244	int pid, status;
1171		1245
…		…
1252	/* kqueue is borked on everything but netbsd apparently */	1326	/* kqueue is borked on everything but netbsd apparently */
1253	/* 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 */
1254	flags &= ~EVBACKEND_KQUEUE;	1328	flags &= ~EVBACKEND_KQUEUE;
1255	#endif	1329	#endif
1256	#ifdef __APPLE__	1330	#ifdef __APPLE__
1257	// flags &= ~EVBACKEND_KQUEUE; for documentation	1331	/* only select works correctly on that "unix-certified" platform */
1258	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 */
1259	#endif	1334	#endif
1260		1335
1261	return flags;	1336	return flags;
1262	}	1337	}
1263		1338
…		…
1295	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1370	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1296	{	1371	{
1297	timeout_blocktime = interval;	1372	timeout_blocktime = interval;
1298	}	1373	}
1299		1374
		1375	/* initialise a loop structure, must be zero-initialised */
1300	static void noinline	1376	static void noinline
1301	loop_init (EV_P_ unsigned int flags)	1377	loop_init (EV_P_ unsigned int flags)
1302	{	1378	{
1303	if (!backend)	1379	if (!backend)
1304	{	1380	{
		1381	#if EV_USE_REALTIME
		1382	if (!have_realtime)
		1383	{
		1384	struct timespec ts;
		1385
		1386	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1387	have_realtime = 1;
		1388	}
		1389	#endif
		1390
1305	#if EV_USE_MONOTONIC	1391	#if EV_USE_MONOTONIC
		1392	if (!have_monotonic)
1306	{	1393	{
1307	struct timespec ts;	1394	struct timespec ts;
		1395
1308	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1396	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1309	have_monotonic = 1;	1397	have_monotonic = 1;
1310	}	1398	}
1311	#endif	1399	#endif
1312		1400
1313	ev_rt_now = ev_time ();	1401	ev_rt_now = ev_time ();
1314	mn_now = get_clock ();	1402	mn_now = get_clock ();
1315	now_floor = mn_now;	1403	now_floor = mn_now;
…		…
1352	#endif	1440	#endif
1353	#if EV_USE_SELECT	1441	#if EV_USE_SELECT
1354	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1442	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1355	#endif	1443	#endif
1356		1444
		1445	ev_prepare_init (&pending_w, pendingcb);
		1446
1357	ev_init (&pipeev, pipecb);	1447	ev_init (&pipe_w, pipecb);
1358	ev_set_priority (&pipeev, EV_MAXPRI);	1448	ev_set_priority (&pipe_w, EV_MAXPRI);
1359	}	1449	}
1360	}	1450	}
1361		1451
		1452	/* free up a loop structure */
1362	static void noinline	1453	static void noinline
1363	loop_destroy (EV_P)	1454	loop_destroy (EV_P)
1364	{	1455	{
1365	int i;	1456	int i;
1366		1457
1367	if (ev_is_active (&pipeev))	1458	if (ev_is_active (&pipe_w))
1368	{	1459	{
1369	ev_ref (EV_A); /* signal watcher */	1460	ev_ref (EV_A); /* signal watcher */
1370	ev_io_stop (EV_A_ &pipeev);	1461	ev_io_stop (EV_A_ &pipe_w);
1371		1462
1372	#if EV_USE_EVENTFD	1463	#if EV_USE_EVENTFD
1373	if (evfd >= 0)	1464	if (evfd >= 0)
1374	close (evfd);	1465	close (evfd);
1375	#endif	1466	#endif
…		…
1414	}	1505	}
1415		1506
1416	ev_free (anfds); anfdmax = 0;	1507	ev_free (anfds); anfdmax = 0;
1417		1508
1418	/* have to use the microsoft-never-gets-it-right macro */	1509	/* have to use the microsoft-never-gets-it-right macro */
		1510	array_free (rfeed, EMPTY);
1419	array_free (fdchange, EMPTY);	1511	array_free (fdchange, EMPTY);
1420	array_free (timer, EMPTY);	1512	array_free (timer, EMPTY);
1421	#if EV_PERIODIC_ENABLE	1513	#if EV_PERIODIC_ENABLE
1422	array_free (periodic, EMPTY);	1514	array_free (periodic, EMPTY);
1423	#endif	1515	#endif
…		…
1432		1524
1433	backend = 0;	1525	backend = 0;
1434	}	1526	}
1435		1527
1436	#if EV_USE_INOTIFY	1528	#if EV_USE_INOTIFY
1437	void inline_size infy_fork (EV_P);	1529	inline_size void infy_fork (EV_P);
1438	#endif	1530	#endif
1439		1531
1440	void inline_size	1532	inline_size void
1441	loop_fork (EV_P)	1533	loop_fork (EV_P)
1442	{	1534	{
1443	#if EV_USE_PORT	1535	#if EV_USE_PORT
1444	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1536	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1445	#endif	1537	#endif
…		…
1451	#endif	1543	#endif
1452	#if EV_USE_INOTIFY	1544	#if EV_USE_INOTIFY
1453	infy_fork (EV_A);	1545	infy_fork (EV_A);
1454	#endif	1546	#endif
1455		1547
1456	if (ev_is_active (&pipeev))	1548	if (ev_is_active (&pipe_w))
1457	{	1549	{
1458	/* this "locks" the handlers against writing to the pipe */	1550	/* this "locks" the handlers against writing to the pipe */
1459	/* while we modify the fd vars */	1551	/* while we modify the fd vars */
1460	gotsig = 1;	1552	gotsig = 1;
1461	#if EV_ASYNC_ENABLE	1553	#if EV_ASYNC_ENABLE
1462	gotasync = 1;	1554	gotasync = 1;
1463	#endif	1555	#endif
1464		1556
1465	ev_ref (EV_A);	1557	ev_ref (EV_A);
1466	ev_io_stop (EV_A_ &pipeev);	1558	ev_io_stop (EV_A_ &pipe_w);
1467		1559
1468	#if EV_USE_EVENTFD	1560	#if EV_USE_EVENTFD
1469	if (evfd >= 0)	1561	if (evfd >= 0)
1470	close (evfd);	1562	close (evfd);
1471	#endif	1563	#endif
…		…
1476	close (evpipe [1]);	1568	close (evpipe [1]);
1477	}	1569	}
1478		1570
1479	evpipe_init (EV_A);	1571	evpipe_init (EV_A);
1480	/* now iterate over everything, in case we missed something */	1572	/* now iterate over everything, in case we missed something */
1481	pipecb (EV_A_ &pipeev, EV_READ);	1573	pipecb (EV_A_ &pipe_w, EV_READ);
1482	}	1574	}
1483		1575
1484	postfork = 0;	1576	postfork = 0;
1485	}	1577	}
1486		1578
…		…
1513	{	1605	{
1514	postfork = 1; /* must be in line with ev_default_fork */	1606	postfork = 1; /* must be in line with ev_default_fork */
1515	}	1607	}
1516		1608
1517	#if EV_VERIFY	1609	#if EV_VERIFY
1518	static void	1610	static void noinline
		1611	verify_watcher (EV_P_ W w)
		1612	{
		1613	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1614
		1615	if (w->pending)
		1616	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1617	}
		1618
		1619	static void noinline
		1620	verify_heap (EV_P_ ANHE *heap, int N)
		1621	{
		1622	int i;
		1623
		1624	for (i = HEAP0; i < N + HEAP0; ++i)
		1625	{
		1626	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1627	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1628	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1629
		1630	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1631	}
		1632	}
		1633
		1634	static void noinline
1519	array_check (W **ws, int cnt)	1635	array_verify (EV_P_ W *ws, int cnt)
1520	{	1636	{
1521	while (cnt--)	1637	while (cnt--)
		1638	{
1522	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));	1639	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1640	verify_watcher (EV_A_ ws [cnt]);
		1641	}
1523	}	1642	}
1524	#endif	1643	#endif
1525		1644
1526	void	1645	void
1527	ev_loop_verify (EV_P)	1646	ev_loop_verify (EV_P)
1528	{	1647	{
1529	#if EV_VERIFY	1648	#if EV_VERIFY
1530	int i;	1649	int i;
		1650	WL w;
1531		1651
		1652	assert (activecnt >= -1);
		1653
		1654	assert (fdchangemax >= fdchangecnt);
		1655	for (i = 0; i < fdchangecnt; ++i)
		1656	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1657
		1658	assert (anfdmax >= 0);
		1659	for (i = 0; i < anfdmax; ++i)
		1660	for (w = anfds [i].head; w; w = w->next)
		1661	{
		1662	verify_watcher (EV_A_ (W)w);
		1663	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1664	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1665	}
		1666
		1667	assert (timermax >= timercnt);
1532	checkheap (timers, timercnt);	1668	verify_heap (EV_A_ timers, timercnt);
		1669
1533	#if EV_PERIODIC_ENABLE	1670	#if EV_PERIODIC_ENABLE
		1671	assert (periodicmax >= periodiccnt);
1534	checkheap (periodics, periodiccnt);	1672	verify_heap (EV_A_ periodics, periodiccnt);
1535	#endif	1673	#endif
1536		1674
		1675	for (i = NUMPRI; i--; )
		1676	{
		1677	assert (pendingmax [i] >= pendingcnt [i]);
1537	#if EV_IDLE_ENABLE	1678	#if EV_IDLE_ENABLE
1538	for (i = NUMPRI; i--; )	1679	assert (idleall >= 0);
		1680	assert (idlemax [i] >= idlecnt [i]);
1539	array_check ((W **)idles [i], idlecnt [i]);	1681	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1540	#endif	1682	#endif
		1683	}
		1684
1541	#if EV_FORK_ENABLE	1685	#if EV_FORK_ENABLE
		1686	assert (forkmax >= forkcnt);
1542	array_check ((W **)forks, forkcnt);	1687	array_verify (EV_A_ (W *)forks, forkcnt);
1543	#endif	1688	#endif
		1689
1544	#if EV_ASYNC_ENABLE	1690	#if EV_ASYNC_ENABLE
		1691	assert (asyncmax >= asynccnt);
1545	array_check ((W **)asyncs, asynccnt);	1692	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1693	#endif
		1694
		1695	assert (preparemax >= preparecnt);
		1696	array_verify (EV_A_ (W *)prepares, preparecnt);
		1697
		1698	assert (checkmax >= checkcnt);
		1699	array_verify (EV_A_ (W *)checks, checkcnt);
		1700
		1701	# if 0
		1702	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1703	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1546	#endif	1704	# endif
1547	array_check ((W **)prepares, preparecnt);
1548	array_check ((W **)checks, checkcnt);
1549	#endif	1705	#endif
1550	}	1706	}
1551		1707
1552	#endif /* multiplicity */	1708	#endif /* multiplicity */
1553		1709
…		…
1590	{	1746	{
1591	#if EV_MULTIPLICITY	1747	#if EV_MULTIPLICITY
1592	struct ev_loop *loop = ev_default_loop_ptr;	1748	struct ev_loop *loop = ev_default_loop_ptr;
1593	#endif	1749	#endif
1594		1750
		1751	ev_default_loop_ptr = 0;
		1752
1595	#ifndef _WIN32	1753	#ifndef _WIN32
1596	ev_ref (EV_A); /* child watcher */	1754	ev_ref (EV_A); /* child watcher */
1597	ev_signal_stop (EV_A_ &childev);	1755	ev_signal_stop (EV_A_ &childev);
1598	#endif	1756	#endif
1599		1757
…		…
1605	{	1763	{
1606	#if EV_MULTIPLICITY	1764	#if EV_MULTIPLICITY
1607	struct ev_loop *loop = ev_default_loop_ptr;	1765	struct ev_loop *loop = ev_default_loop_ptr;
1608	#endif	1766	#endif
1609		1767
1610	if (backend)
1611	postfork = 1; /* must be in line with ev_loop_fork */	1768	postfork = 1; /* must be in line with ev_loop_fork */
1612	}	1769	}
1613		1770
1614	/*****************************************************************************/	1771	/*****************************************************************************/
1615		1772
1616	void	1773	void
1617	ev_invoke (EV_P_ void *w, int revents)	1774	ev_invoke (EV_P_ void *w, int revents)
1618	{	1775	{
1619	EV_CB_INVOKE ((W)w, revents);	1776	EV_CB_INVOKE ((W)w, revents);
1620	}	1777	}
1621		1778
1622	void inline_speed	1779	inline_speed void
1623	call_pending (EV_P)	1780	call_pending (EV_P)
1624	{	1781	{
1625	int pri;	1782	int pri;
1626		1783
1627	for (pri = NUMPRI; pri--; )	1784	for (pri = NUMPRI; pri--; )
1628	while (pendingcnt [pri])	1785	while (pendingcnt [pri])
1629	{	1786	{
1630	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1787	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1631		1788
1632	if (expect_true (p->w))
1633	{
1634	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1789	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1790	/* ^ this is no longer true, as pending_w could be here */
1635		1791
1636	p->w->pending = 0;	1792	p->w->pending = 0;
1637	EV_CB_INVOKE (p->w, p->events);	1793	EV_CB_INVOKE (p->w, p->events);
1638	EV_FREQUENT_CHECK;	1794	EV_FREQUENT_CHECK;
1639	}
1640	}	1795	}
1641	}	1796	}
1642		1797
1643	#if EV_IDLE_ENABLE	1798	#if EV_IDLE_ENABLE
1644	void inline_size	1799	/* make idle watchers pending. this handles the "call-idle */
		1800	/* only when higher priorities are idle" logic */
		1801	inline_size void
1645	idle_reify (EV_P)	1802	idle_reify (EV_P)
1646	{	1803	{
1647	if (expect_false (idleall))	1804	if (expect_false (idleall))
1648	{	1805	{
1649	int pri;	1806	int pri;
…		…
1661	}	1818	}
1662	}	1819	}
1663	}	1820	}
1664	#endif	1821	#endif
1665		1822
1666	void inline_size	1823	/* make timers pending */
		1824	inline_size void
1667	timers_reify (EV_P)	1825	timers_reify (EV_P)
1668	{	1826	{
1669	EV_FREQUENT_CHECK;	1827	EV_FREQUENT_CHECK;
1670		1828
1671	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	1829	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1672	{	1830	{
1673	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	1831	do
1674
1675	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1676
1677	/* first reschedule or stop timer */
1678	if (w->repeat)
1679	{	1832	{
		1833	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1834
		1835	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		1836
		1837	/* first reschedule or stop timer */
		1838	if (w->repeat)
		1839	{
1680	ev_at (w) += w->repeat;	1840	ev_at (w) += w->repeat;
1681	if (ev_at (w) < mn_now)	1841	if (ev_at (w) < mn_now)
1682	ev_at (w) = mn_now;	1842	ev_at (w) = mn_now;
1683		1843
1684	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1844	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1685		1845
1686	ANHE_at_cache (timers [HEAP0]);	1846	ANHE_at_cache (timers [HEAP0]);
1687	downheap (timers, timercnt, HEAP0);	1847	downheap (timers, timercnt, HEAP0);
		1848	}
		1849	else
		1850	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1851
		1852	EV_FREQUENT_CHECK;
		1853	feed_reverse (EV_A_ (W)w);
1688	}	1854	}
1689	else	1855	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1690	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1691		1856
1692	EV_FREQUENT_CHECK;
1693	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1857	feed_reverse_done (EV_A_ EV_TIMEOUT);
1694	}	1858	}
1695	}	1859	}
1696		1860
1697	#if EV_PERIODIC_ENABLE	1861	#if EV_PERIODIC_ENABLE
1698	void inline_size	1862	/* make periodics pending */
		1863	inline_size void
1699	periodics_reify (EV_P)	1864	periodics_reify (EV_P)
1700	{	1865	{
1701	EV_FREQUENT_CHECK;	1866	EV_FREQUENT_CHECK;
1702		1867
1703	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	1868	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1704	{	1869	{
1705	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	1870	int feed_count = 0;
1706		1871
1707	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	1872	do
1708
1709	/* first reschedule or stop timer */
1710	if (w->reschedule_cb)
1711	{	1873	{
		1874	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1875
		1876	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		1877
		1878	/* first reschedule or stop timer */
		1879	if (w->reschedule_cb)
		1880	{
1712	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1881	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1713		1882
1714	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));	1883	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1715		1884
1716	ANHE_at_cache (periodics [HEAP0]);	1885	ANHE_at_cache (periodics [HEAP0]);
1717	downheap (periodics, periodiccnt, HEAP0);	1886	downheap (periodics, periodiccnt, HEAP0);
		1887	}
		1888	else if (w->interval)
		1889	{
		1890	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1891	/* if next trigger time is not sufficiently in the future, put it there */
		1892	/* this might happen because of floating point inexactness */
		1893	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1894	{
		1895	ev_at (w) += w->interval;
		1896
		1897	/* if interval is unreasonably low we might still have a time in the past */
		1898	/* so correct this. this will make the periodic very inexact, but the user */
		1899	/* has effectively asked to get triggered more often than possible */
		1900	if (ev_at (w) < ev_rt_now)
		1901	ev_at (w) = ev_rt_now;
		1902	}
		1903
		1904	ANHE_at_cache (periodics [HEAP0]);
		1905	downheap (periodics, periodiccnt, HEAP0);
		1906	}
		1907	else
		1908	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1909
		1910	EV_FREQUENT_CHECK;
		1911	feed_reverse (EV_A_ (W)w);
1718	}	1912	}
1719	else if (w->interval)	1913	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1720	{
1721	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1722	/* if next trigger time is not sufficiently in the future, put it there */
1723	/* this might happen because of floating point inexactness */
1724	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1725	{
1726	ev_at (w) += w->interval;
1727		1914
1728	/* if interval is unreasonably low we might still have a time in the past */
1729	/* so correct this. this will make the periodic very inexact, but the user */
1730	/* has effectively asked to get triggered more often than possible */
1731	if (ev_at (w) < ev_rt_now)
1732	ev_at (w) = ev_rt_now;
1733	}
1734
1735	ANHE_at_cache (periodics [HEAP0]);
1736	downheap (periodics, periodiccnt, HEAP0);
1737	}
1738	else
1739	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1740
1741	EV_FREQUENT_CHECK;
1742	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1915	feed_reverse_done (EV_A_ EV_PERIODIC);
1743	}	1916	}
1744	}	1917	}
1745		1918
		1919	/* simply recalculate all periodics */
		1920	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1746	static void noinline	1921	static void noinline
1747	periodics_reschedule (EV_P)	1922	periodics_reschedule (EV_P)
1748	{	1923	{
1749	int i;	1924	int i;
1750		1925
…		…
1763		1938
1764	reheap (periodics, periodiccnt);	1939	reheap (periodics, periodiccnt);
1765	}	1940	}
1766	#endif	1941	#endif
1767		1942
1768	void inline_speed	1943	/* adjust all timers by a given offset */
		1944	static void noinline
		1945	timers_reschedule (EV_P_ ev_tstamp adjust)
		1946	{
		1947	int i;
		1948
		1949	for (i = 0; i < timercnt; ++i)
		1950	{
		1951	ANHE *he = timers + i + HEAP0;
		1952	ANHE_w (*he)->at += adjust;
		1953	ANHE_at_cache (*he);
		1954	}
		1955	}
		1956
		1957	/* fetch new monotonic and realtime times from the kernel */
		1958	/* also detetc if there was a timejump, and act accordingly */
		1959	inline_speed void
1769	time_update (EV_P_ ev_tstamp max_block)	1960	time_update (EV_P_ ev_tstamp max_block)
1770	{	1961	{
1771	int i;
1772
1773	#if EV_USE_MONOTONIC	1962	#if EV_USE_MONOTONIC
1774	if (expect_true (have_monotonic))	1963	if (expect_true (have_monotonic))
1775	{	1964	{
		1965	int i;
1776	ev_tstamp odiff = rtmn_diff;	1966	ev_tstamp odiff = rtmn_diff;
1777		1967
1778	mn_now = get_clock ();	1968	mn_now = get_clock ();
1779		1969
1780	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	1970	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1806	ev_rt_now = ev_time ();	1996	ev_rt_now = ev_time ();
1807	mn_now = get_clock ();	1997	mn_now = get_clock ();
1808	now_floor = mn_now;	1998	now_floor = mn_now;
1809	}	1999	}
1810		2000
		2001	/* no timer adjustment, as the monotonic clock doesn't jump */
		2002	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1811	# if EV_PERIODIC_ENABLE	2003	# if EV_PERIODIC_ENABLE
1812	periodics_reschedule (EV_A);	2004	periodics_reschedule (EV_A);
1813	# endif	2005	# endif
1814	/* no timer adjustment, as the monotonic clock doesn't jump */
1815	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1816	}	2006	}
1817	else	2007	else
1818	#endif	2008	#endif
1819	{	2009	{
1820	ev_rt_now = ev_time ();	2010	ev_rt_now = ev_time ();
1821		2011
1822	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2012	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1823	{	2013	{
		2014	/* adjust timers. this is easy, as the offset is the same for all of them */
		2015	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1824	#if EV_PERIODIC_ENABLE	2016	#if EV_PERIODIC_ENABLE
1825	periodics_reschedule (EV_A);	2017	periodics_reschedule (EV_A);
1826	#endif	2018	#endif
1827	/* adjust timers. this is easy, as the offset is the same for all of them */
1828	for (i = 0; i < timercnt; ++i)
1829	{
1830	ANHE *he = timers + i + HEAP0;
1831	ANHE_w (*he)->at += ev_rt_now - mn_now;
1832	ANHE_at_cache (*he);
1833	}
1834	}	2019	}
1835		2020
1836	mn_now = ev_rt_now;	2021	mn_now = ev_rt_now;
1837	}	2022	}
1838	}
1839
1840	void
1841	ev_ref (EV_P)
1842	{
1843	++activecnt;
1844	}
1845
1846	void
1847	ev_unref (EV_P)
1848	{
1849	--activecnt;
1850	}	2023	}
1851		2024
1852	static int loop_done;	2025	static int loop_done;
1853		2026
1854	void	2027	void
…		…
1888	{	2061	{
1889	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2062	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1890	call_pending (EV_A);	2063	call_pending (EV_A);
1891	}	2064	}
1892		2065
1893	if (expect_false (!activecnt))
1894	break;
1895
1896	/* we might have forked, so reify kernel state if necessary */	2066	/* we might have forked, so reify kernel state if necessary */
1897	if (expect_false (postfork))	2067	if (expect_false (postfork))
1898	loop_fork (EV_A);	2068	loop_fork (EV_A);
1899		2069
1900	/* update fd-related kernel structures */	2070	/* update fd-related kernel structures */
…		…
1905	ev_tstamp waittime = 0.;	2075	ev_tstamp waittime = 0.;
1906	ev_tstamp sleeptime = 0.;	2076	ev_tstamp sleeptime = 0.;
1907		2077
1908	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2078	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1909	{	2079	{
		2080	/* remember old timestamp for io_blocktime calculation */
		2081	ev_tstamp prev_mn_now = mn_now;
		2082
1910	/* update time to cancel out callback processing overhead */	2083	/* update time to cancel out callback processing overhead */
1911	time_update (EV_A_ 1e100);	2084	time_update (EV_A_ 1e100);
1912		2085
1913	waittime = MAX_BLOCKTIME;	2086	waittime = MAX_BLOCKTIME;
1914		2087
…		…
1924	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2097	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1925	if (waittime > to) waittime = to;	2098	if (waittime > to) waittime = to;
1926	}	2099	}
1927	#endif	2100	#endif
1928		2101
		2102	/* don't let timeouts decrease the waittime below timeout_blocktime */
1929	if (expect_false (waittime < timeout_blocktime))	2103	if (expect_false (waittime < timeout_blocktime))
1930	waittime = timeout_blocktime;	2104	waittime = timeout_blocktime;
1931		2105
1932	sleeptime = waittime - backend_fudge;	2106	/* extra check because io_blocktime is commonly 0 */
1933
1934	if (expect_true (sleeptime > io_blocktime))	2107	if (expect_false (io_blocktime))
1935	sleeptime = io_blocktime;
1936
1937	if (sleeptime)
1938	{	2108	{
		2109	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2110
		2111	if (sleeptime > waittime - backend_fudge)
		2112	sleeptime = waittime - backend_fudge;
		2113
		2114	if (expect_true (sleeptime > 0.))
		2115	{
1939	ev_sleep (sleeptime);	2116	ev_sleep (sleeptime);
1940	waittime -= sleeptime;	2117	waittime -= sleeptime;
		2118	}
1941	}	2119	}
1942	}	2120	}
1943		2121
1944	++loop_count;	2122	++loop_count;
1945	backend_poll (EV_A_ waittime);	2123	backend_poll (EV_A_ waittime);
…		…
1979	ev_unloop (EV_P_ int how)	2157	ev_unloop (EV_P_ int how)
1980	{	2158	{
1981	loop_done = how;	2159	loop_done = how;
1982	}	2160	}
1983		2161
		2162	void
		2163	ev_ref (EV_P)
		2164	{
		2165	++activecnt;
		2166	}
		2167
		2168	void
		2169	ev_unref (EV_P)
		2170	{
		2171	--activecnt;
		2172	}
		2173
		2174	void
		2175	ev_now_update (EV_P)
		2176	{
		2177	time_update (EV_A_ 1e100);
		2178	}
		2179
		2180	void
		2181	ev_suspend (EV_P)
		2182	{
		2183	ev_now_update (EV_A);
		2184	}
		2185
		2186	void
		2187	ev_resume (EV_P)
		2188	{
		2189	ev_tstamp mn_prev = mn_now;
		2190
		2191	ev_now_update (EV_A);
		2192	timers_reschedule (EV_A_ mn_now - mn_prev);
		2193	#if EV_PERIODIC_ENABLE
		2194	/* TODO: really do this? */
		2195	periodics_reschedule (EV_A);
		2196	#endif
		2197	}
		2198
1984	/*****************************************************************************/	2199	/*****************************************************************************/
		2200	/* singly-linked list management, used when the expected list length is short */
1985		2201
1986	void inline_size	2202	inline_size void
1987	wlist_add (WL *head, WL elem)	2203	wlist_add (WL *head, WL elem)
1988	{	2204	{
1989	elem->next = *head;	2205	elem->next = *head;
1990	*head = elem;	2206	*head = elem;
1991	}	2207	}
1992		2208
1993	void inline_size	2209	inline_size void
1994	wlist_del (WL *head, WL elem)	2210	wlist_del (WL *head, WL elem)
1995	{	2211	{
1996	while (*head)	2212	while (*head)
1997	{	2213	{
1998	if (*head == elem)	2214	if (*head == elem)
…		…
2003		2219
2004	head = &(*head)->next;	2220	head = &(*head)->next;
2005	}	2221	}
2006	}	2222	}
2007		2223
2008	void inline_speed	2224	/* internal, faster, version of ev_clear_pending */
		2225	inline_speed void
2009	clear_pending (EV_P_ W w)	2226	clear_pending (EV_P_ W w)
2010	{	2227	{
2011	if (w->pending)	2228	if (w->pending)
2012	{	2229	{
2013	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2230	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2014	w->pending = 0;	2231	w->pending = 0;
2015	}	2232	}
2016	}	2233	}
2017		2234
2018	int	2235	int
…		…
2022	int pending = w_->pending;	2239	int pending = w_->pending;
2023		2240
2024	if (expect_true (pending))	2241	if (expect_true (pending))
2025	{	2242	{
2026	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2243	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2244	p->w = (W)&pending_w;
2027	w_->pending = 0;	2245	w_->pending = 0;
2028	p->w = 0;
2029	return p->events;	2246	return p->events;
2030	}	2247	}
2031	else	2248	else
2032	return 0;	2249	return 0;
2033	}	2250	}
2034		2251
2035	void inline_size	2252	inline_size void
2036	pri_adjust (EV_P_ W w)	2253	pri_adjust (EV_P_ W w)
2037	{	2254	{
2038	int pri = w->priority;	2255	int pri = w->priority;
2039	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2256	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2040	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2257	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2041	w->priority = pri;	2258	w->priority = pri;
2042	}	2259	}
2043		2260
2044	void inline_speed	2261	inline_speed void
2045	ev_start (EV_P_ W w, int active)	2262	ev_start (EV_P_ W w, int active)
2046	{	2263	{
2047	pri_adjust (EV_A_ w);	2264	pri_adjust (EV_A_ w);
2048	w->active = active;	2265	w->active = active;
2049	ev_ref (EV_A);	2266	ev_ref (EV_A);
2050	}	2267	}
2051		2268
2052	void inline_size	2269	inline_size void
2053	ev_stop (EV_P_ W w)	2270	ev_stop (EV_P_ W w)
2054	{	2271	{
2055	ev_unref (EV_A);	2272	ev_unref (EV_A);
2056	w->active = 0;	2273	w->active = 0;
2057	}	2274	}
…		…
2064	int fd = w->fd;	2281	int fd = w->fd;
2065		2282
2066	if (expect_false (ev_is_active (w)))	2283	if (expect_false (ev_is_active (w)))
2067	return;	2284	return;
2068		2285
2069	assert (("ev_io_start called with negative fd", fd >= 0));	2286	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2287	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2070		2288
2071	EV_FREQUENT_CHECK;	2289	EV_FREQUENT_CHECK;
2072		2290
2073	ev_start (EV_A_ (W)w, 1);	2291	ev_start (EV_A_ (W)w, 1);
2074	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2292	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2075	wlist_add (&anfds[fd].head, (WL)w);	2293	wlist_add (&anfds[fd].head, (WL)w);
2076		2294
2077	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2295	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
2078	w->events &= ~EV_IOFDSET;	2296	w->events &= ~EV__IOFDSET;
2079		2297
2080	EV_FREQUENT_CHECK;	2298	EV_FREQUENT_CHECK;
2081	}	2299	}
2082		2300
2083	void noinline	2301	void noinline
…		…
2085	{	2303	{
2086	clear_pending (EV_A_ (W)w);	2304	clear_pending (EV_A_ (W)w);
2087	if (expect_false (!ev_is_active (w)))	2305	if (expect_false (!ev_is_active (w)))
2088	return;	2306	return;
2089		2307
2090	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2308	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2091		2309
2092	EV_FREQUENT_CHECK;	2310	EV_FREQUENT_CHECK;
2093		2311
2094	wlist_del (&anfds[w->fd].head, (WL)w);	2312	wlist_del (&anfds[w->fd].head, (WL)w);
2095	ev_stop (EV_A_ (W)w);	2313	ev_stop (EV_A_ (W)w);
…		…
2105	if (expect_false (ev_is_active (w)))	2323	if (expect_false (ev_is_active (w)))
2106	return;	2324	return;
2107		2325
2108	ev_at (w) += mn_now;	2326	ev_at (w) += mn_now;
2109		2327
2110	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2328	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2111		2329
2112	EV_FREQUENT_CHECK;	2330	EV_FREQUENT_CHECK;
2113		2331
2114	++timercnt;	2332	++timercnt;
2115	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);	2333	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
…		…
2118	ANHE_at_cache (timers [ev_active (w)]);	2336	ANHE_at_cache (timers [ev_active (w)]);
2119	upheap (timers, ev_active (w));	2337	upheap (timers, ev_active (w));
2120		2338
2121	EV_FREQUENT_CHECK;	2339	EV_FREQUENT_CHECK;
2122		2340
2123	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2341	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2124	}	2342	}
2125		2343
2126	void noinline	2344	void noinline
2127	ev_timer_stop (EV_P_ ev_timer *w)	2345	ev_timer_stop (EV_P_ ev_timer *w)
2128	{	2346	{
…		…
2133	EV_FREQUENT_CHECK;	2351	EV_FREQUENT_CHECK;
2134		2352
2135	{	2353	{
2136	int active = ev_active (w);	2354	int active = ev_active (w);
2137		2355
2138	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2356	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2139		2357
2140	--timercnt;	2358	--timercnt;
2141		2359
2142	if (expect_true (active < timercnt + HEAP0))	2360	if (expect_true (active < timercnt + HEAP0))
2143	{	2361	{
…		…
2187		2405
2188	if (w->reschedule_cb)	2406	if (w->reschedule_cb)
2189	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2407	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2190	else if (w->interval)	2408	else if (w->interval)
2191	{	2409	{
2192	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2410	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2193	/* this formula differs from the one in periodic_reify because we do not always round up */	2411	/* this formula differs from the one in periodic_reify because we do not always round up */
2194	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2412	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2195	}	2413	}
2196	else	2414	else
2197	ev_at (w) = w->offset;	2415	ev_at (w) = w->offset;
…		…
2205	ANHE_at_cache (periodics [ev_active (w)]);	2423	ANHE_at_cache (periodics [ev_active (w)]);
2206	upheap (periodics, ev_active (w));	2424	upheap (periodics, ev_active (w));
2207		2425
2208	EV_FREQUENT_CHECK;	2426	EV_FREQUENT_CHECK;
2209		2427
2210	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2428	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2211	}	2429	}
2212		2430
2213	void noinline	2431	void noinline
2214	ev_periodic_stop (EV_P_ ev_periodic *w)	2432	ev_periodic_stop (EV_P_ ev_periodic *w)
2215	{	2433	{
…		…
2220	EV_FREQUENT_CHECK;	2438	EV_FREQUENT_CHECK;
2221		2439
2222	{	2440	{
2223	int active = ev_active (w);	2441	int active = ev_active (w);
2224		2442
2225	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2443	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2226		2444
2227	--periodiccnt;	2445	--periodiccnt;
2228		2446
2229	if (expect_true (active < periodiccnt + HEAP0))	2447	if (expect_true (active < periodiccnt + HEAP0))
2230	{	2448	{
…		…
2253		2471
2254	void noinline	2472	void noinline
2255	ev_signal_start (EV_P_ ev_signal *w)	2473	ev_signal_start (EV_P_ ev_signal *w)
2256	{	2474	{
2257	#if EV_MULTIPLICITY	2475	#if EV_MULTIPLICITY
2258	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2476	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2259	#endif	2477	#endif
2260	if (expect_false (ev_is_active (w)))	2478	if (expect_false (ev_is_active (w)))
2261	return;	2479	return;
2262		2480
2263	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2481	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2264		2482
2265	evpipe_init (EV_A);	2483	evpipe_init (EV_A);
2266		2484
2267	EV_FREQUENT_CHECK;	2485	EV_FREQUENT_CHECK;
2268		2486
…		…
2271	sigset_t full, prev;	2489	sigset_t full, prev;
2272	sigfillset (&full);	2490	sigfillset (&full);
2273	sigprocmask (SIG_SETMASK, &full, &prev);	2491	sigprocmask (SIG_SETMASK, &full, &prev);
2274	#endif	2492	#endif
2275		2493
2276	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2494	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2277		2495
2278	#ifndef _WIN32	2496	#ifndef _WIN32
2279	sigprocmask (SIG_SETMASK, &prev, 0);	2497	sigprocmask (SIG_SETMASK, &prev, 0);
2280	#endif	2498	#endif
2281	}	2499	}
…		…
2319		2537
2320	void	2538	void
2321	ev_child_start (EV_P_ ev_child *w)	2539	ev_child_start (EV_P_ ev_child *w)
2322	{	2540	{
2323	#if EV_MULTIPLICITY	2541	#if EV_MULTIPLICITY
2324	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2542	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2325	#endif	2543	#endif
2326	if (expect_false (ev_is_active (w)))	2544	if (expect_false (ev_is_active (w)))
2327	return;	2545	return;
2328		2546
2329	EV_FREQUENT_CHECK;	2547	EV_FREQUENT_CHECK;
…		…
2354	# ifdef _WIN32	2572	# ifdef _WIN32
2355	# undef lstat	2573	# undef lstat
2356	# define lstat(a,b) _stati64 (a,b)	2574	# define lstat(a,b) _stati64 (a,b)
2357	# endif	2575	# endif
2358		2576
2359	#define DEF_STAT_INTERVAL 5.0074891	2577	#define DEF_STAT_INTERVAL 5.0074891
		2578	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2360	#define MIN_STAT_INTERVAL 0.1074891	2579	#define MIN_STAT_INTERVAL 0.1074891
2361		2580
2362	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2581	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2363		2582
2364	#if EV_USE_INOTIFY	2583	#if EV_USE_INOTIFY
2365	# define EV_INOTIFY_BUFSIZE 8192	2584	# define EV_INOTIFY_BUFSIZE 8192
…		…
2369	{	2588	{
2370	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);	2589	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);
2371		2590
2372	if (w->wd < 0)	2591	if (w->wd < 0)
2373	{	2592	{
		2593	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2374	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2594	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2375		2595
2376	/* monitor some parent directory for speedup hints */	2596	/* monitor some parent directory for speedup hints */
2377	/* note that exceeding the hardcoded limit is not a correctness issue, */	2597	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2378	/* but an efficiency issue only */	2598	/* but an efficiency issue only */
2379	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2599	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2380	{	2600	{
2381	char path [4096];	2601	char path [4096];
2382	strcpy (path, w->path);	2602	strcpy (path, w->path);
…		…
2386	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2606	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2387	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2607	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2388		2608
2389	char *pend = strrchr (path, '/');	2609	char *pend = strrchr (path, '/');
2390		2610
2391	if (!pend)	2611	if (!pend || pend == path)
2392	break; /* whoops, no '/', complain to your admin */	2612	break;
2393		2613
2394	*pend = 0;	2614	*pend = 0;
2395	w->wd = inotify_add_watch (fs_fd, path, mask);	2615	w->wd = inotify_add_watch (fs_fd, path, mask);
2396	}	2616	}
2397	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2617	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2398	}	2618	}
2399	}	2619	}
2400	else
2401	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2402		2620
2403	if (w->wd >= 0)	2621	if (w->wd >= 0)
		2622	{
2404	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2623	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2624
		2625	/* now local changes will be tracked by inotify, but remote changes won't */
		2626	/* unless the filesystem it known to be local, we therefore still poll */
		2627	/* also do poll on <2.6.25, but with normal frequency */
		2628	struct statfs sfs;
		2629
		2630	if (fs_2625 && !statfs (w->path, &sfs))
		2631	if (sfs.f_type == 0x1373 /* devfs */
		2632	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2633	|| sfs.f_type == 0x3153464a /* jfs */
		2634	|| sfs.f_type == 0x52654973 /* reiser3 */
		2635	|| sfs.f_type == 0x01021994 /* tempfs */
		2636	|| sfs.f_type == 0x58465342 /* xfs */)
		2637	return;
		2638
		2639	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2640	ev_timer_again (EV_A_ &w->timer);
		2641	}
2405	}	2642	}
2406		2643
2407	static void noinline	2644	static void noinline
2408	infy_del (EV_P_ ev_stat *w)	2645	infy_del (EV_P_ ev_stat *w)
2409	{	2646	{
…		…
2423		2660
2424	static void noinline	2661	static void noinline
2425	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2662	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2426	{	2663	{
2427	if (slot < 0)	2664	if (slot < 0)
2428	/* overflow, need to check for all hahs slots */	2665	/* overflow, need to check for all hash slots */
2429	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2666	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2430	infy_wd (EV_A_ slot, wd, ev);	2667	infy_wd (EV_A_ slot, wd, ev);
2431	else	2668	else
2432	{	2669	{
2433	WL w_;	2670	WL w_;
…		…
2439		2676
2440	if (w->wd == wd || wd == -1)	2677	if (w->wd == wd || wd == -1)
2441	{	2678	{
2442	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2679	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2443	{	2680	{
		2681	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2444	w->wd = -1;	2682	w->wd = -1;
2445	infy_add (EV_A_ w); /* re-add, no matter what */	2683	infy_add (EV_A_ w); /* re-add, no matter what */
2446	}	2684	}
2447		2685
2448	stat_timer_cb (EV_A_ &w->timer, 0);	2686	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2461		2699
2462	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2700	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2463	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2701	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2464	}	2702	}
2465		2703
2466	void inline_size	2704	inline_size void
		2705	check_2625 (EV_P)
		2706	{
		2707	/* kernels < 2.6.25 are borked
		2708	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2709	*/
		2710	struct utsname buf;
		2711	int major, minor, micro;
		2712
		2713	if (uname (&buf))
		2714	return;
		2715
		2716	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2717	return;
		2718
		2719	if (major < 2
		2720	|| (major == 2 && minor < 6)
		2721	|| (major == 2 && minor == 6 && micro < 25))
		2722	return;
		2723
		2724	fs_2625 = 1;
		2725	}
		2726
		2727	inline_size void
2467	infy_init (EV_P)	2728	infy_init (EV_P)
2468	{	2729	{
2469	if (fs_fd != -2)	2730	if (fs_fd != -2)
2470	return;	2731	return;
		2732
		2733	fs_fd = -1;
		2734
		2735	check_2625 (EV_A);
2471		2736
2472	fs_fd = inotify_init ();	2737	fs_fd = inotify_init ();
2473		2738
2474	if (fs_fd >= 0)	2739	if (fs_fd >= 0)
2475	{	2740	{
…		…
2477	ev_set_priority (&fs_w, EV_MAXPRI);	2742	ev_set_priority (&fs_w, EV_MAXPRI);
2478	ev_io_start (EV_A_ &fs_w);	2743	ev_io_start (EV_A_ &fs_w);
2479	}	2744	}
2480	}	2745	}
2481		2746
2482	void inline_size	2747	inline_size void
2483	infy_fork (EV_P)	2748	infy_fork (EV_P)
2484	{	2749	{
2485	int slot;	2750	int slot;
2486		2751
2487	if (fs_fd < 0)	2752	if (fs_fd < 0)
…		…
2503	w->wd = -1;	2768	w->wd = -1;
2504		2769
2505	if (fs_fd >= 0)	2770	if (fs_fd >= 0)
2506	infy_add (EV_A_ w); /* re-add, no matter what */	2771	infy_add (EV_A_ w); /* re-add, no matter what */
2507	else	2772	else
2508	ev_timer_start (EV_A_ &w->timer);	2773	ev_timer_again (EV_A_ &w->timer);
2509	}	2774	}
2510
2511	}	2775	}
2512	}	2776	}
2513		2777
		2778	#endif
		2779
		2780	#ifdef _WIN32
		2781	# define EV_LSTAT(p,b) _stati64 (p, b)
		2782	#else
		2783	# define EV_LSTAT(p,b) lstat (p, b)
2514	#endif	2784	#endif
2515		2785
2516	void	2786	void
2517	ev_stat_stat (EV_P_ ev_stat *w)	2787	ev_stat_stat (EV_P_ ev_stat *w)
2518	{	2788	{
…		…
2545	|| w->prev.st_atime != w->attr.st_atime	2815	|| w->prev.st_atime != w->attr.st_atime
2546	|| w->prev.st_mtime != w->attr.st_mtime	2816	|| w->prev.st_mtime != w->attr.st_mtime
2547	|| w->prev.st_ctime != w->attr.st_ctime	2817	|| w->prev.st_ctime != w->attr.st_ctime
2548	) {	2818	) {
2549	#if EV_USE_INOTIFY	2819	#if EV_USE_INOTIFY
		2820	if (fs_fd >= 0)
		2821	{
2550	infy_del (EV_A_ w);	2822	infy_del (EV_A_ w);
2551	infy_add (EV_A_ w);	2823	infy_add (EV_A_ w);
2552	ev_stat_stat (EV_A_ w); /* avoid race... */	2824	ev_stat_stat (EV_A_ w); /* avoid race... */
		2825	}
2553	#endif	2826	#endif
2554		2827
2555	ev_feed_event (EV_A_ w, EV_STAT);	2828	ev_feed_event (EV_A_ w, EV_STAT);
2556	}	2829	}
2557	}	2830	}
…		…
2560	ev_stat_start (EV_P_ ev_stat *w)	2833	ev_stat_start (EV_P_ ev_stat *w)
2561	{	2834	{
2562	if (expect_false (ev_is_active (w)))	2835	if (expect_false (ev_is_active (w)))
2563	return;	2836	return;
2564		2837
2565	/* since we use memcmp, we need to clear any padding data etc. */
2566	memset (&w->prev, 0, sizeof (ev_statdata));
2567	memset (&w->attr, 0, sizeof (ev_statdata));
2568
2569	ev_stat_stat (EV_A_ w);	2838	ev_stat_stat (EV_A_ w);
2570		2839
		2840	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2571	if (w->interval < MIN_STAT_INTERVAL)	2841	w->interval = MIN_STAT_INTERVAL;
2572	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2573		2842
2574	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2843	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2575	ev_set_priority (&w->timer, ev_priority (w));	2844	ev_set_priority (&w->timer, ev_priority (w));
2576		2845
2577	#if EV_USE_INOTIFY	2846	#if EV_USE_INOTIFY
2578	infy_init (EV_A);	2847	infy_init (EV_A);
2579		2848
2580	if (fs_fd >= 0)	2849	if (fs_fd >= 0)
2581	infy_add (EV_A_ w);	2850	infy_add (EV_A_ w);
2582	else	2851	else
2583	#endif	2852	#endif
2584	ev_timer_start (EV_A_ &w->timer);	2853	ev_timer_again (EV_A_ &w->timer);
2585		2854
2586	ev_start (EV_A_ (W)w, 1);	2855	ev_start (EV_A_ (W)w, 1);
2587		2856
2588	EV_FREQUENT_CHECK;	2857	EV_FREQUENT_CHECK;
2589	}	2858	}
…		…
2759	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3028	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2760	}	3029	}
2761	}	3030	}
2762	}	3031	}
2763		3032
		3033	static void
		3034	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3035	{
		3036	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3037
		3038	ev_embed_stop (EV_A_ w);
		3039
		3040	{
		3041	struct ev_loop *loop = w->other;
		3042
		3043	ev_loop_fork (EV_A);
		3044	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3045	}
		3046
		3047	ev_embed_start (EV_A_ w);
		3048	}
		3049
2764	#if 0	3050	#if 0
2765	static void	3051	static void
2766	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3052	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2767	{	3053	{
2768	ev_idle_stop (EV_A_ idle);	3054	ev_idle_stop (EV_A_ idle);
…		…
2775	if (expect_false (ev_is_active (w)))	3061	if (expect_false (ev_is_active (w)))
2776	return;	3062	return;
2777		3063
2778	{	3064	{
2779	struct ev_loop *loop = w->other;	3065	struct ev_loop *loop = w->other;
2780	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3066	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2781	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3067	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2782	}	3068	}
2783		3069
2784	EV_FREQUENT_CHECK;	3070	EV_FREQUENT_CHECK;
2785		3071
…		…
2788		3074
2789	ev_prepare_init (&w->prepare, embed_prepare_cb);	3075	ev_prepare_init (&w->prepare, embed_prepare_cb);
2790	ev_set_priority (&w->prepare, EV_MINPRI);	3076	ev_set_priority (&w->prepare, EV_MINPRI);
2791	ev_prepare_start (EV_A_ &w->prepare);	3077	ev_prepare_start (EV_A_ &w->prepare);
2792		3078
		3079	ev_fork_init (&w->fork, embed_fork_cb);
		3080	ev_fork_start (EV_A_ &w->fork);
		3081
2793	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3082	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2794		3083
2795	ev_start (EV_A_ (W)w, 1);	3084	ev_start (EV_A_ (W)w, 1);
2796		3085
2797	EV_FREQUENT_CHECK;	3086	EV_FREQUENT_CHECK;
…		…
2804	if (expect_false (!ev_is_active (w)))	3093	if (expect_false (!ev_is_active (w)))
2805	return;	3094	return;
2806		3095
2807	EV_FREQUENT_CHECK;	3096	EV_FREQUENT_CHECK;
2808		3097
2809	ev_io_stop (EV_A_ &w->io);	3098	ev_io_stop (EV_A_ &w->io);
2810	ev_prepare_stop (EV_A_ &w->prepare);	3099	ev_prepare_stop (EV_A_ &w->prepare);
2811		3100	ev_fork_stop (EV_A_ &w->fork);
2812	ev_stop (EV_A_ (W)w);
2813		3101
2814	EV_FREQUENT_CHECK;	3102	EV_FREQUENT_CHECK;
2815	}	3103	}
2816	#endif	3104	#endif
2817		3105
…		…
2914	once_cb (EV_P_ struct ev_once *once, int revents)	3202	once_cb (EV_P_ struct ev_once *once, int revents)
2915	{	3203	{
2916	void (*cb)(int revents, void *arg) = once->cb;	3204	void (*cb)(int revents, void *arg) = once->cb;
2917	void *arg = once->arg;	3205	void *arg = once->arg;
2918		3206
2919	ev_io_stop (EV_A_ &once->io);	3207	ev_io_stop (EV_A_ &once->io);
2920	ev_timer_stop (EV_A_ &once->to);	3208	ev_timer_stop (EV_A_ &once->to);
2921	ev_free (once);	3209	ev_free (once);
2922		3210
2923	cb (revents, arg);	3211	cb (revents, arg);
2924	}	3212	}
2925		3213
2926	static void	3214	static void
2927	once_cb_io (EV_P_ ev_io *w, int revents)	3215	once_cb_io (EV_P_ ev_io *w, int revents)
2928	{	3216	{
2929	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3217	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3218
		3219	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2930	}	3220	}
2931		3221
2932	static void	3222	static void
2933	once_cb_to (EV_P_ ev_timer *w, int revents)	3223	once_cb_to (EV_P_ ev_timer *w, int revents)
2934	{	3224	{
2935	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3225	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3226
		3227	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2936	}	3228	}
2937		3229
2938	void	3230	void
2939	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3231	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2940	{	3232	{
…		…
2962	ev_timer_set (&once->to, timeout, 0.);	3254	ev_timer_set (&once->to, timeout, 0.);
2963	ev_timer_start (EV_A_ &once->to);	3255	ev_timer_start (EV_A_ &once->to);
2964	}	3256	}
2965	}	3257	}
2966		3258
		3259	/*****************************************************************************/
		3260
		3261	#if EV_WALK_ENABLE
		3262	void
		3263	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3264	{
		3265	int i, j;
		3266	ev_watcher_list *wl, *wn;
		3267
		3268	if (types & (EV_IO | EV_EMBED))
		3269	for (i = 0; i < anfdmax; ++i)
		3270	for (wl = anfds [i].head; wl; )
		3271	{
		3272	wn = wl->next;
		3273
		3274	#if EV_EMBED_ENABLE
		3275	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3276	{
		3277	if (types & EV_EMBED)
		3278	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3279	}
		3280	else
		3281	#endif
		3282	#if EV_USE_INOTIFY
		3283	if (ev_cb ((ev_io *)wl) == infy_cb)
		3284	;
		3285	else
		3286	#endif
		3287	if ((ev_io *)wl != &pipe_w)
		3288	if (types & EV_IO)
		3289	cb (EV_A_ EV_IO, wl);
		3290
		3291	wl = wn;
		3292	}
		3293
		3294	if (types & (EV_TIMER | EV_STAT))
		3295	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3296	#if EV_STAT_ENABLE
		3297	/*TODO: timer is not always active*/
		3298	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3299	{
		3300	if (types & EV_STAT)
		3301	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3302	}
		3303	else
		3304	#endif
		3305	if (types & EV_TIMER)
		3306	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3307
		3308	#if EV_PERIODIC_ENABLE
		3309	if (types & EV_PERIODIC)
		3310	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3311	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3312	#endif
		3313
		3314	#if EV_IDLE_ENABLE
		3315	if (types & EV_IDLE)
		3316	for (j = NUMPRI; i--; )
		3317	for (i = idlecnt [j]; i--; )
		3318	cb (EV_A_ EV_IDLE, idles [j][i]);
		3319	#endif
		3320
		3321	#if EV_FORK_ENABLE
		3322	if (types & EV_FORK)
		3323	for (i = forkcnt; i--; )
		3324	if (ev_cb (forks [i]) != embed_fork_cb)
		3325	cb (EV_A_ EV_FORK, forks [i]);
		3326	#endif
		3327
		3328	#if EV_ASYNC_ENABLE
		3329	if (types & EV_ASYNC)
		3330	for (i = asynccnt; i--; )
		3331	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3332	#endif
		3333
		3334	if (types & EV_PREPARE)
		3335	for (i = preparecnt; i--; )
		3336	#if EV_EMBED_ENABLE
		3337	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3338	#endif
		3339	cb (EV_A_ EV_PREPARE, prepares [i]);
		3340
		3341	if (types & EV_CHECK)
		3342	for (i = checkcnt; i--; )
		3343	cb (EV_A_ EV_CHECK, checks [i]);
		3344
		3345	if (types & EV_SIGNAL)
		3346	for (i = 0; i < signalmax; ++i)
		3347	for (wl = signals [i].head; wl; )
		3348	{
		3349	wn = wl->next;
		3350	cb (EV_A_ EV_SIGNAL, wl);
		3351	wl = wn;
		3352	}
		3353
		3354	if (types & EV_CHILD)
		3355	for (i = EV_PID_HASHSIZE; i--; )
		3356	for (wl = childs [i]; wl; )
		3357	{
		3358	wn = wl->next;
		3359	cb (EV_A_ EV_CHILD, wl);
		3360	wl = wn;
		3361	}
		3362	/* EV_STAT 0x00001000 /* stat data changed */
		3363	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3364	}
		3365	#endif
		3366
2967	#if EV_MULTIPLICITY	3367	#if EV_MULTIPLICITY
2968	#include "ev_wrap.h"	3368	#include "ev_wrap.h"
2969	#endif	3369	#endif
2970		3370
2971	#ifdef __cplusplus	3371	#ifdef __cplusplus

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