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Comparing libev/ev.c (file contents):
Revision 1.253 by root, Sat May 31 03:13:27 2008 UTC vs.
Revision 1.294 by root, Wed Jul 8 02:46:05 2009 UTC

1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without modifica-	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* tion, are permitted provided that the following conditions are met:	8	* tion, are permitted provided that the following conditions are met:
9	*	9	*
…		…
47	# include EV_CONFIG_H	47	# include EV_CONFIG_H
48	# else	48	# else
49	# include "config.h"	49	# include "config.h"
50	# endif	50	# endif
51		51
		52	# if HAVE_CLOCK_SYSCALL
		53	# ifndef EV_USE_CLOCK_SYSCALL
		54	# define EV_USE_CLOCK_SYSCALL 1
		55	# ifndef EV_USE_REALTIME
		56	# define EV_USE_REALTIME 0
		57	# endif
		58	# ifndef EV_USE_MONOTONIC
		59	# define EV_USE_MONOTONIC 1
		60	# endif
		61	# endif
		62	# elif !defined(EV_USE_CLOCK_SYSCALL)
		63	# define EV_USE_CLOCK_SYSCALL 0
		64	# endif
		65
52	# if HAVE_CLOCK_GETTIME	66	# if HAVE_CLOCK_GETTIME
53	# ifndef EV_USE_MONOTONIC	67	# ifndef EV_USE_MONOTONIC
54	# define EV_USE_MONOTONIC 1	68	# define EV_USE_MONOTONIC 1
55	# endif	69	# endif
56	# ifndef EV_USE_REALTIME	70	# ifndef EV_USE_REALTIME
57	# define EV_USE_REALTIME 1	71	# define EV_USE_REALTIME 0
58	# endif	72	# endif
59	# else	73	# else
60	# ifndef EV_USE_MONOTONIC	74	# ifndef EV_USE_MONOTONIC
61	# define EV_USE_MONOTONIC 0	75	# define EV_USE_MONOTONIC 0
62	# endif	76	# endif
…		…
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)
…		…
507		564
508	#endif	565	#endif
509		566
510	/*****************************************************************************/	567	/*****************************************************************************/
511		568
		569	#ifndef EV_HAVE_EV_TIME
512	ev_tstamp	570	ev_tstamp
513	ev_time (void)	571	ev_time (void)
514	{	572	{
515	#if EV_USE_REALTIME	573	#if EV_USE_REALTIME
		574	if (expect_true (have_realtime))
		575	{
516	struct timespec ts;	576	struct timespec ts;
517	clock_gettime (CLOCK_REALTIME, &ts);	577	clock_gettime (CLOCK_REALTIME, &ts);
518	return ts.tv_sec + ts.tv_nsec * 1e-9;	578	return ts.tv_sec + ts.tv_nsec * 1e-9;
519	#else	579	}
		580	#endif
		581
520	struct timeval tv;	582	struct timeval tv;
521	gettimeofday (&tv, 0);	583	gettimeofday (&tv, 0);
522	return tv.tv_sec + tv.tv_usec * 1e-6;	584	return tv.tv_sec + tv.tv_usec * 1e-6;
523	#endif
524	}	585	}
		586	#endif
525		587
526	ev_tstamp inline_size	588	inline_size ev_tstamp
527	get_clock (void)	589	get_clock (void)
528	{	590	{
529	#if EV_USE_MONOTONIC	591	#if EV_USE_MONOTONIC
530	if (expect_true (have_monotonic))	592	if (expect_true (have_monotonic))
531	{	593	{
…		…
564	struct timeval tv;	626	struct timeval tv;
565		627
566	tv.tv_sec = (time_t)delay;	628	tv.tv_sec = (time_t)delay;
567	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	629	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
568		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 */
569	select (0, 0, 0, 0, &tv);	634	select (0, 0, 0, 0, &tv);
570	#endif	635	#endif
571	}	636	}
572	}	637	}
573		638
574	/*****************************************************************************/	639	/*****************************************************************************/
575		640
576	#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 */
577		642
578	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
579	array_nextsize (int elem, int cur, int cnt)	646	array_nextsize (int elem, int cur, int cnt)
580	{	647	{
581	int ncur = cur + 1;	648	int ncur = cur + 1;
582		649
583	do	650	do
…		…
600	array_realloc (int elem, void *base, int *cur, int cnt)	667	array_realloc (int elem, void *base, int *cur, int cnt)
601	{	668	{
602	*cur = array_nextsize (elem, *cur, cnt);	669	*cur = array_nextsize (elem, *cur, cnt);
603	return ev_realloc (base, elem * *cur);	670	return ev_realloc (base, elem * *cur);
604	}	671	}
		672
		673	#define array_init_zero(base,count) \
		674	memset ((void *)(base), 0, sizeof (*(base)) * (count))
605		675
606	#define array_needsize(type,base,cur,cnt,init) \	676	#define array_needsize(type,base,cur,cnt,init) \
607	if (expect_false ((cnt) > (cur))) \	677	if (expect_false ((cnt) > (cur))) \
608	{ \	678	{ \
609	int ocur_ = (cur); \	679	int ocur_ = (cur); \
…		…
621	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	691	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
622	}	692	}
623	#endif	693	#endif
624		694
625	#define array_free(stem, idx) \	695	#define array_free(stem, idx) \
626	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
627		697
628	/*****************************************************************************/	698	/*****************************************************************************/
		699
		700	/* dummy callback for pending events */
		701	static void noinline
		702	pendingcb (EV_P_ ev_prepare *w, int revents)
		703	{
		704	}
629		705
630	void noinline	706	void noinline
631	ev_feed_event (EV_P_ void *w, int revents)	707	ev_feed_event (EV_P_ void *w, int revents)
632	{	708	{
633	W w_ = (W)w;	709	W w_ = (W)w;
…		…
642	pendings [pri][w_->pending - 1].w = w_;	718	pendings [pri][w_->pending - 1].w = w_;
643	pendings [pri][w_->pending - 1].events = revents;	719	pendings [pri][w_->pending - 1].events = revents;
644	}	720	}
645	}	721	}
646		722
647	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
648	queue_events (EV_P_ W *events, int eventcnt, int type)	739	queue_events (EV_P_ W *events, int eventcnt, int type)
649	{	740	{
650	int i;	741	int i;
651		742
652	for (i = 0; i < eventcnt; ++i)	743	for (i = 0; i < eventcnt; ++i)
653	ev_feed_event (EV_A_ events [i], type);	744	ev_feed_event (EV_A_ events [i], type);
654	}	745	}
655		746
656	/*****************************************************************************/	747	/*****************************************************************************/
657		748
658	void inline_size	749	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)	750	fd_event (EV_P_ int fd, int revents)
673	{	751	{
674	ANFD *anfd = anfds + fd;	752	ANFD *anfd = anfds + fd;
675	ev_io *w;	753	ev_io *w;
676		754
…		…
688	{	766	{
689	if (fd >= 0 && fd < anfdmax)	767	if (fd >= 0 && fd < anfdmax)
690	fd_event (EV_A_ fd, revents);	768	fd_event (EV_A_ fd, revents);
691	}	769	}
692		770
693	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
694	fd_reify (EV_P)	774	fd_reify (EV_P)
695	{	775	{
696	int i;	776	int i;
697		777
698	for (i = 0; i < fdchangecnt; ++i)	778	for (i = 0; i < fdchangecnt; ++i)
…		…
707	events |= (unsigned char)w->events;	787	events |= (unsigned char)w->events;
708		788
709	#if EV_SELECT_IS_WINSOCKET	789	#if EV_SELECT_IS_WINSOCKET
710	if (events)	790	if (events)
711	{	791	{
712	unsigned long argp;	792	unsigned long arg;
713	#ifdef EV_FD_TO_WIN32_HANDLE	793	#ifdef EV_FD_TO_WIN32_HANDLE
714	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	794	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
715	#else	795	#else
716	anfd->handle = _get_osfhandle (fd);	796	anfd->handle = _get_osfhandle (fd);
717	#endif	797	#endif
718	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));
719	}	799	}
720	#endif	800	#endif
721		801
722	{	802	{
723	unsigned char o_events = anfd->events;	803	unsigned char o_events = anfd->events;
724	unsigned char o_reify = anfd->reify;	804	unsigned char o_reify = anfd->reify;
725		805
726	anfd->reify = 0;	806	anfd->reify = 0;
727	anfd->events = events;	807	anfd->events = events;
728		808
729	if (o_events != events || o_reify & EV_IOFDSET)	809	if (o_events != events || o_reify & EV__IOFDSET)
730	backend_modify (EV_A_ fd, o_events, events);	810	backend_modify (EV_A_ fd, o_events, events);
731	}	811	}
732	}	812	}
733		813
734	fdchangecnt = 0;	814	fdchangecnt = 0;
735	}	815	}
736		816
737	void inline_size	817	/* something about the given fd changed */
		818	inline_size void
738	fd_change (EV_P_ int fd, int flags)	819	fd_change (EV_P_ int fd, int flags)
739	{	820	{
740	unsigned char reify = anfds [fd].reify;	821	unsigned char reify = anfds [fd].reify;
741	anfds [fd].reify |= flags;	822	anfds [fd].reify |= flags;
742		823
…		…
746	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	827	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
747	fdchanges [fdchangecnt - 1] = fd;	828	fdchanges [fdchangecnt - 1] = fd;
748	}	829	}
749	}	830	}
750		831
751	void inline_speed	832	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		833	inline_speed void
752	fd_kill (EV_P_ int fd)	834	fd_kill (EV_P_ int fd)
753	{	835	{
754	ev_io *w;	836	ev_io *w;
755		837
756	while ((w = (ev_io *)anfds [fd].head))	838	while ((w = (ev_io *)anfds [fd].head))
…		…
758	ev_io_stop (EV_A_ w);	840	ev_io_stop (EV_A_ w);
759	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);
760	}	842	}
761	}	843	}
762		844
763	int inline_size	845	/* check whether the given fd is atcually valid, for error recovery */
		846	inline_size int
764	fd_valid (int fd)	847	fd_valid (int fd)
765	{	848	{
766	#ifdef _WIN32	849	#ifdef _WIN32
767	return _get_osfhandle (fd) != -1;	850	return _get_osfhandle (fd) != -1;
768	#else	851	#else
…		…
776	{	859	{
777	int fd;	860	int fd;
778		861
779	for (fd = 0; fd < anfdmax; ++fd)	862	for (fd = 0; fd < anfdmax; ++fd)
780	if (anfds [fd].events)	863	if (anfds [fd].events)
781	if (!fd_valid (fd) == -1 && errno == EBADF)	864	if (!fd_valid (fd) && errno == EBADF)
782	fd_kill (EV_A_ fd);	865	fd_kill (EV_A_ fd);
783	}	866	}
784		867
785	/* 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 */
786	static void noinline	869	static void noinline
…		…
804		887
805	for (fd = 0; fd < anfdmax; ++fd)	888	for (fd = 0; fd < anfdmax; ++fd)
806	if (anfds [fd].events)	889	if (anfds [fd].events)
807	{	890	{
808	anfds [fd].events = 0;	891	anfds [fd].events = 0;
		892	anfds [fd].emask = 0;
809	fd_change (EV_A_ fd, EV_IOFDSET | 1);	893	fd_change (EV_A_ fd, EV__IOFDSET | 1);
810	}	894	}
811	}	895	}
812		896
813	/*****************************************************************************/	897	/*****************************************************************************/
814		898
…		…
830	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	914	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
831	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)	915	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
832	#define UPHEAP_DONE(p,k) ((p) == (k))	916	#define UPHEAP_DONE(p,k) ((p) == (k))
833		917
834	/* away from the root */	918	/* away from the root */
835	void inline_speed	919	inline_speed void
836	downheap (ANHE *heap, int N, int k)	920	downheap (ANHE *heap, int N, int k)
837	{	921	{
838	ANHE he = heap [k];	922	ANHE he = heap [k];
839	ANHE *E = heap + N + HEAP0;	923	ANHE *E = heap + N + HEAP0;
840		924
…		…
880	#define HEAP0 1	964	#define HEAP0 1
881	#define HPARENT(k) ((k) >> 1)	965	#define HPARENT(k) ((k) >> 1)
882	#define UPHEAP_DONE(p,k) (!(p))	966	#define UPHEAP_DONE(p,k) (!(p))
883		967
884	/* away from the root */	968	/* away from the root */
885	void inline_speed	969	inline_speed void
886	downheap (ANHE *heap, int N, int k)	970	downheap (ANHE *heap, int N, int k)
887	{	971	{
888	ANHE he = heap [k];	972	ANHE he = heap [k];
889		973
890	for (;;)	974	for (;;)
…		…
910	ev_active (ANHE_w (he)) = k;	994	ev_active (ANHE_w (he)) = k;
911	}	995	}
912	#endif	996	#endif
913		997
914	/* towards the root */	998	/* towards the root */
915	void inline_speed	999	inline_speed void
916	upheap (ANHE *heap, int k)	1000	upheap (ANHE *heap, int k)
917	{	1001	{
918	ANHE he = heap [k];	1002	ANHE he = heap [k];
919		1003
920	for (;;)	1004	for (;;)
…		…
931		1015
932	heap [k] = he;	1016	heap [k] = he;
933	ev_active (ANHE_w (he)) = k;	1017	ev_active (ANHE_w (he)) = k;
934	}	1018	}
935		1019
936	void inline_size	1020	/* move an element suitably so it is in a correct place */
		1021	inline_size void
937	adjustheap (ANHE *heap, int N, int k)	1022	adjustheap (ANHE *heap, int N, int k)
938	{	1023	{
939	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]))
940	upheap (heap, k);	1025	upheap (heap, k);
941	else	1026	else
942	downheap (heap, N, k);	1027	downheap (heap, N, k);
943	}	1028	}
944		1029
945	/* 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 */
946	void inline_size	1031	inline_size void
947	reheap (ANHE *heap, int N)	1032	reheap (ANHE *heap, int N)
948	{	1033	{
949	int i;	1034	int i;
950		1035
951	/* 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 */
…		…
954	upheap (heap, i + HEAP0);	1039	upheap (heap, i + HEAP0);
955	}	1040	}
956		1041
957	/*****************************************************************************/	1042	/*****************************************************************************/
958		1043
		1044	/* associate signal watchers to a signal signal */
959	typedef struct	1045	typedef struct
960	{	1046	{
961	WL head;	1047	WL head;
962	EV_ATOMIC_T gotsig;	1048	EV_ATOMIC_T gotsig;
963	} ANSIG;	1049	} ANSIG;
…		…
965	static ANSIG *signals;	1051	static ANSIG *signals;
966	static int signalmax;	1052	static int signalmax;
967		1053
968	static EV_ATOMIC_T gotsig;	1054	static EV_ATOMIC_T gotsig;
969		1055
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	/*****************************************************************************/	1056	/*****************************************************************************/
983		1057
984	void inline_speed	1058	/* used to prepare libev internal fd's */
		1059	/* this is not fork-safe */
		1060	inline_speed void
985	fd_intern (int fd)	1061	fd_intern (int fd)
986	{	1062	{
987	#ifdef _WIN32	1063	#ifdef _WIN32
988	int arg = 1;	1064	unsigned long arg = 1;
989	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1065	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
990	#else	1066	#else
991	fcntl (fd, F_SETFD, FD_CLOEXEC);	1067	fcntl (fd, F_SETFD, FD_CLOEXEC);
992	fcntl (fd, F_SETFL, O_NONBLOCK);	1068	fcntl (fd, F_SETFL, O_NONBLOCK);
993	#endif	1069	#endif
994	}	1070	}
995		1071
996	static void noinline	1072	static void noinline
997	evpipe_init (EV_P)	1073	evpipe_init (EV_P)
998	{	1074	{
999	if (!ev_is_active (&pipeev))	1075	if (!ev_is_active (&pipe_w))
1000	{	1076	{
1001	#if EV_USE_EVENTFD	1077	#if EV_USE_EVENTFD
1002	if ((evfd = eventfd (0, 0)) >= 0)	1078	if ((evfd = eventfd (0, 0)) >= 0)
1003	{	1079	{
1004	evpipe [0] = -1;	1080	evpipe [0] = -1;
1005	fd_intern (evfd);	1081	fd_intern (evfd);
1006	ev_io_set (&pipeev, evfd, EV_READ);	1082	ev_io_set (&pipe_w, evfd, EV_READ);
1007	}	1083	}
1008	else	1084	else
1009	#endif	1085	#endif
1010	{	1086	{
1011	while (pipe (evpipe))	1087	while (pipe (evpipe))
1012	syserr ("(libev) error creating signal/async pipe");	1088	ev_syserr ("(libev) error creating signal/async pipe");
1013		1089
1014	fd_intern (evpipe [0]);	1090	fd_intern (evpipe [0]);
1015	fd_intern (evpipe [1]);	1091	fd_intern (evpipe [1]);
1016	ev_io_set (&pipeev, evpipe [0], EV_READ);	1092	ev_io_set (&pipe_w, evpipe [0], EV_READ);
1017	}	1093	}
1018		1094
1019	ev_io_start (EV_A_ &pipeev);	1095	ev_io_start (EV_A_ &pipe_w);
1020	ev_unref (EV_A); /* watcher should not keep loop alive */	1096	ev_unref (EV_A); /* watcher should not keep loop alive */
1021	}	1097	}
1022	}	1098	}
1023		1099
1024	void inline_size	1100	inline_size void
1025	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1101	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1026	{	1102	{
1027	if (!*flag)	1103	if (!*flag)
1028	{	1104	{
1029	int old_errno = errno; /* save errno because write might clobber it */	1105	int old_errno = errno; /* save errno because write might clobber it */
…		…
1042		1118
1043	errno = old_errno;	1119	errno = old_errno;
1044	}	1120	}
1045	}	1121	}
1046		1122
		1123	/* called whenever the libev signal pipe */
		1124	/* got some events (signal, async) */
1047	static void	1125	static void
1048	pipecb (EV_P_ ev_io *iow, int revents)	1126	pipecb (EV_P_ ev_io *iow, int revents)
1049	{	1127	{
1050	#if EV_USE_EVENTFD	1128	#if EV_USE_EVENTFD
1051	if (evfd >= 0)	1129	if (evfd >= 0)
…		…
1107	ev_feed_signal_event (EV_P_ int signum)	1185	ev_feed_signal_event (EV_P_ int signum)
1108	{	1186	{
1109	WL w;	1187	WL w;
1110		1188
1111	#if EV_MULTIPLICITY	1189	#if EV_MULTIPLICITY
1112	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));
1113	#endif	1191	#endif
1114		1192
1115	--signum;	1193	--signum;
1116		1194
1117	if (signum < 0 || signum >= signalmax)	1195	if (signum < 0 || signum >= signalmax)
…		…
1133		1211
1134	#ifndef WIFCONTINUED	1212	#ifndef WIFCONTINUED
1135	# define WIFCONTINUED(status) 0	1213	# define WIFCONTINUED(status) 0
1136	#endif	1214	#endif
1137		1215
1138	void inline_speed	1216	/* handle a single child status event */
		1217	inline_speed void
1139	child_reap (EV_P_ int chain, int pid, int status)	1218	child_reap (EV_P_ int chain, int pid, int status)
1140	{	1219	{
1141	ev_child *w;	1220	ev_child *w;
1142	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1221	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1143		1222
…		…
1156		1235
1157	#ifndef WCONTINUED	1236	#ifndef WCONTINUED
1158	# define WCONTINUED 0	1237	# define WCONTINUED 0
1159	#endif	1238	#endif
1160		1239
		1240	/* called on sigchld etc., calls waitpid */
1161	static void	1241	static void
1162	childcb (EV_P_ ev_signal *sw, int revents)	1242	childcb (EV_P_ ev_signal *sw, int revents)
1163	{	1243	{
1164	int pid, status;	1244	int pid, status;
1165		1245
…		…
1246	/* kqueue is borked on everything but netbsd apparently */	1326	/* kqueue is borked on everything but netbsd apparently */
1247	/* 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 */
1248	flags &= ~EVBACKEND_KQUEUE;	1328	flags &= ~EVBACKEND_KQUEUE;
1249	#endif	1329	#endif
1250	#ifdef __APPLE__	1330	#ifdef __APPLE__
1251	// flags &= ~EVBACKEND_KQUEUE; for documentation	1331	/* only select works correctly on that "unix-certified" platform */
1252	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 */
1253	#endif	1334	#endif
1254		1335
1255	return flags;	1336	return flags;
1256	}	1337	}
1257		1338
…		…
1277	ev_loop_count (EV_P)	1358	ev_loop_count (EV_P)
1278	{	1359	{
1279	return loop_count;	1360	return loop_count;
1280	}	1361	}
1281		1362
		1363	unsigned int
		1364	ev_loop_depth (EV_P)
		1365	{
		1366	return loop_depth;
		1367	}
		1368
1282	void	1369	void
1283	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1370	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1284	{	1371	{
1285	io_blocktime = interval;	1372	io_blocktime = interval;
1286	}	1373	}
…		…
1289	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1376	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1290	{	1377	{
1291	timeout_blocktime = interval;	1378	timeout_blocktime = interval;
1292	}	1379	}
1293		1380
		1381	/* initialise a loop structure, must be zero-initialised */
1294	static void noinline	1382	static void noinline
1295	loop_init (EV_P_ unsigned int flags)	1383	loop_init (EV_P_ unsigned int flags)
1296	{	1384	{
1297	if (!backend)	1385	if (!backend)
1298	{	1386	{
		1387	#if EV_USE_REALTIME
		1388	if (!have_realtime)
		1389	{
		1390	struct timespec ts;
		1391
		1392	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1393	have_realtime = 1;
		1394	}
		1395	#endif
		1396
1299	#if EV_USE_MONOTONIC	1397	#if EV_USE_MONOTONIC
		1398	if (!have_monotonic)
1300	{	1399	{
1301	struct timespec ts;	1400	struct timespec ts;
		1401
1302	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1402	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1303	have_monotonic = 1;	1403	have_monotonic = 1;
1304	}	1404	}
1305	#endif	1405	#endif
1306		1406
1307	ev_rt_now = ev_time ();	1407	ev_rt_now = ev_time ();
1308	mn_now = get_clock ();	1408	mn_now = get_clock ();
1309	now_floor = mn_now;	1409	now_floor = mn_now;
…		…
1346	#endif	1446	#endif
1347	#if EV_USE_SELECT	1447	#if EV_USE_SELECT
1348	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1448	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1349	#endif	1449	#endif
1350		1450
		1451	ev_prepare_init (&pending_w, pendingcb);
		1452
1351	ev_init (&pipeev, pipecb);	1453	ev_init (&pipe_w, pipecb);
1352	ev_set_priority (&pipeev, EV_MAXPRI);	1454	ev_set_priority (&pipe_w, EV_MAXPRI);
1353	}	1455	}
1354	}	1456	}
1355		1457
		1458	/* free up a loop structure */
1356	static void noinline	1459	static void noinline
1357	loop_destroy (EV_P)	1460	loop_destroy (EV_P)
1358	{	1461	{
1359	int i;	1462	int i;
1360		1463
1361	if (ev_is_active (&pipeev))	1464	if (ev_is_active (&pipe_w))
1362	{	1465	{
1363	ev_ref (EV_A); /* signal watcher */	1466	ev_ref (EV_A); /* signal watcher */
1364	ev_io_stop (EV_A_ &pipeev);	1467	ev_io_stop (EV_A_ &pipe_w);
1365		1468
1366	#if EV_USE_EVENTFD	1469	#if EV_USE_EVENTFD
1367	if (evfd >= 0)	1470	if (evfd >= 0)
1368	close (evfd);	1471	close (evfd);
1369	#endif	1472	#endif
…		…
1408	}	1511	}
1409		1512
1410	ev_free (anfds); anfdmax = 0;	1513	ev_free (anfds); anfdmax = 0;
1411		1514
1412	/* have to use the microsoft-never-gets-it-right macro */	1515	/* have to use the microsoft-never-gets-it-right macro */
		1516	array_free (rfeed, EMPTY);
1413	array_free (fdchange, EMPTY);	1517	array_free (fdchange, EMPTY);
1414	array_free (timer, EMPTY);	1518	array_free (timer, EMPTY);
1415	#if EV_PERIODIC_ENABLE	1519	#if EV_PERIODIC_ENABLE
1416	array_free (periodic, EMPTY);	1520	array_free (periodic, EMPTY);
1417	#endif	1521	#endif
…		…
1426		1530
1427	backend = 0;	1531	backend = 0;
1428	}	1532	}
1429		1533
1430	#if EV_USE_INOTIFY	1534	#if EV_USE_INOTIFY
1431	void inline_size infy_fork (EV_P);	1535	inline_size void infy_fork (EV_P);
1432	#endif	1536	#endif
1433		1537
1434	void inline_size	1538	inline_size void
1435	loop_fork (EV_P)	1539	loop_fork (EV_P)
1436	{	1540	{
1437	#if EV_USE_PORT	1541	#if EV_USE_PORT
1438	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1542	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1439	#endif	1543	#endif
…		…
1445	#endif	1549	#endif
1446	#if EV_USE_INOTIFY	1550	#if EV_USE_INOTIFY
1447	infy_fork (EV_A);	1551	infy_fork (EV_A);
1448	#endif	1552	#endif
1449		1553
1450	if (ev_is_active (&pipeev))	1554	if (ev_is_active (&pipe_w))
1451	{	1555	{
1452	/* this "locks" the handlers against writing to the pipe */	1556	/* this "locks" the handlers against writing to the pipe */
1453	/* while we modify the fd vars */	1557	/* while we modify the fd vars */
1454	gotsig = 1;	1558	gotsig = 1;
1455	#if EV_ASYNC_ENABLE	1559	#if EV_ASYNC_ENABLE
1456	gotasync = 1;	1560	gotasync = 1;
1457	#endif	1561	#endif
1458		1562
1459	ev_ref (EV_A);	1563	ev_ref (EV_A);
1460	ev_io_stop (EV_A_ &pipeev);	1564	ev_io_stop (EV_A_ &pipe_w);
1461		1565
1462	#if EV_USE_EVENTFD	1566	#if EV_USE_EVENTFD
1463	if (evfd >= 0)	1567	if (evfd >= 0)
1464	close (evfd);	1568	close (evfd);
1465	#endif	1569	#endif
…		…
1470	close (evpipe [1]);	1574	close (evpipe [1]);
1471	}	1575	}
1472		1576
1473	evpipe_init (EV_A);	1577	evpipe_init (EV_A);
1474	/* now iterate over everything, in case we missed something */	1578	/* now iterate over everything, in case we missed something */
1475	pipecb (EV_A_ &pipeev, EV_READ);	1579	pipecb (EV_A_ &pipe_w, EV_READ);
1476	}	1580	}
1477		1581
1478	postfork = 0;	1582	postfork = 0;
1479	}	1583	}
1480		1584
…		…
1507	{	1611	{
1508	postfork = 1; /* must be in line with ev_default_fork */	1612	postfork = 1; /* must be in line with ev_default_fork */
1509	}	1613	}
1510		1614
1511	#if EV_VERIFY	1615	#if EV_VERIFY
1512	void noinline	1616	static void noinline
1513	verify_watcher (EV_P_ W w)	1617	verify_watcher (EV_P_ W w)
1514	{	1618	{
1515	assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));	1619	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1516		1620
1517	if (w->pending)	1621	if (w->pending)
1518	assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));	1622	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1519	}	1623	}
1520		1624
1521	static void noinline	1625	static void noinline
1522	verify_heap (EV_P_ ANHE *heap, int N)	1626	verify_heap (EV_P_ ANHE *heap, int N)
1523	{	1627	{
1524	int i;	1628	int i;
1525		1629
1526	for (i = HEAP0; i < N + HEAP0; ++i)	1630	for (i = HEAP0; i < N + HEAP0; ++i)
1527	{	1631	{
1528	assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));	1632	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])));	1633	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]))));	1634	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1531		1635
1532	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));	1636	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1533	}	1637	}
1534	}	1638	}
1535		1639
1536	static void noinline	1640	static void noinline
1537	array_verify (EV_P_ W *ws, int cnt)	1641	array_verify (EV_P_ W *ws, int cnt)
1538	{	1642	{
1539	while (cnt--)	1643	while (cnt--)
1540	{	1644	{
1541	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));	1645	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1542	verify_watcher (EV_A_ ws [cnt]);	1646	verify_watcher (EV_A_ ws [cnt]);
1543	}	1647	}
1544	}	1648	}
1545	#endif	1649	#endif
1546		1650
…		…
1553		1657
1554	assert (activecnt >= -1);	1658	assert (activecnt >= -1);
1555		1659
1556	assert (fdchangemax >= fdchangecnt);	1660	assert (fdchangemax >= fdchangecnt);
1557	for (i = 0; i < fdchangecnt; ++i)	1661	for (i = 0; i < fdchangecnt; ++i)
1558	assert (("negative fd in fdchanges", fdchanges [i] >= 0));	1662	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1559		1663
1560	assert (anfdmax >= 0);	1664	assert (anfdmax >= 0);
1561	for (i = 0; i < anfdmax; ++i)	1665	for (i = 0; i < anfdmax; ++i)
1562	for (w = anfds [i].head; w; w = w->next)	1666	for (w = anfds [i].head; w; w = w->next)
1563	{	1667	{
1564	verify_watcher (EV_A_ (W)w);	1668	verify_watcher (EV_A_ (W)w);
1565	assert (("inactive fd watcher on anfd list", ev_active (w) == 1));	1669	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));	1670	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1567	}	1671	}
1568		1672
1569	assert (timermax >= timercnt);	1673	assert (timermax >= timercnt);
1570	verify_heap (EV_A_ timers, timercnt);	1674	verify_heap (EV_A_ timers, timercnt);
1571		1675
…		…
1648	{	1752	{
1649	#if EV_MULTIPLICITY	1753	#if EV_MULTIPLICITY
1650	struct ev_loop *loop = ev_default_loop_ptr;	1754	struct ev_loop *loop = ev_default_loop_ptr;
1651	#endif	1755	#endif
1652		1756
		1757	ev_default_loop_ptr = 0;
		1758
1653	#ifndef _WIN32	1759	#ifndef _WIN32
1654	ev_ref (EV_A); /* child watcher */	1760	ev_ref (EV_A); /* child watcher */
1655	ev_signal_stop (EV_A_ &childev);	1761	ev_signal_stop (EV_A_ &childev);
1656	#endif	1762	#endif
1657		1763
…		…
1663	{	1769	{
1664	#if EV_MULTIPLICITY	1770	#if EV_MULTIPLICITY
1665	struct ev_loop *loop = ev_default_loop_ptr;	1771	struct ev_loop *loop = ev_default_loop_ptr;
1666	#endif	1772	#endif
1667		1773
1668	if (backend)
1669	postfork = 1; /* must be in line with ev_loop_fork */	1774	postfork = 1; /* must be in line with ev_loop_fork */
1670	}	1775	}
1671		1776
1672	/*****************************************************************************/	1777	/*****************************************************************************/
1673		1778
1674	void	1779	void
1675	ev_invoke (EV_P_ void *w, int revents)	1780	ev_invoke (EV_P_ void *w, int revents)
1676	{	1781	{
1677	EV_CB_INVOKE ((W)w, revents);	1782	EV_CB_INVOKE ((W)w, revents);
1678	}	1783	}
1679		1784
1680	void inline_speed	1785	inline_speed void
1681	call_pending (EV_P)	1786	call_pending (EV_P)
1682	{	1787	{
1683	int pri;	1788	int pri;
1684		1789
1685	for (pri = NUMPRI; pri--; )	1790	for (pri = NUMPRI; pri--; )
1686	while (pendingcnt [pri])	1791	while (pendingcnt [pri])
1687	{	1792	{
1688	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1793	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1689		1794
1690	if (expect_true (p->w))
1691	{
1692	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1795	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1796	/* ^ this is no longer true, as pending_w could be here */
1693		1797
1694	p->w->pending = 0;	1798	p->w->pending = 0;
1695	EV_CB_INVOKE (p->w, p->events);	1799	EV_CB_INVOKE (p->w, p->events);
1696	EV_FREQUENT_CHECK;	1800	EV_FREQUENT_CHECK;
1697	}
1698	}	1801	}
1699	}	1802	}
1700		1803
1701	#if EV_IDLE_ENABLE	1804	#if EV_IDLE_ENABLE
1702	void inline_size	1805	/* make idle watchers pending. this handles the "call-idle */
		1806	/* only when higher priorities are idle" logic */
		1807	inline_size void
1703	idle_reify (EV_P)	1808	idle_reify (EV_P)
1704	{	1809	{
1705	if (expect_false (idleall))	1810	if (expect_false (idleall))
1706	{	1811	{
1707	int pri;	1812	int pri;
…		…
1719	}	1824	}
1720	}	1825	}
1721	}	1826	}
1722	#endif	1827	#endif
1723		1828
1724	void inline_size	1829	/* make timers pending */
		1830	inline_size void
1725	timers_reify (EV_P)	1831	timers_reify (EV_P)
1726	{	1832	{
1727	EV_FREQUENT_CHECK;	1833	EV_FREQUENT_CHECK;
1728		1834
1729	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	1835	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1730	{	1836	{
1731	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	1837	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	{	1838	{
		1839	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1840
		1841	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		1842
		1843	/* first reschedule or stop timer */
		1844	if (w->repeat)
		1845	{
1738	ev_at (w) += w->repeat;	1846	ev_at (w) += w->repeat;
1739	if (ev_at (w) < mn_now)	1847	if (ev_at (w) < mn_now)
1740	ev_at (w) = mn_now;	1848	ev_at (w) = mn_now;
1741		1849
1742	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1850	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1743		1851
1744	ANHE_at_cache (timers [HEAP0]);	1852	ANHE_at_cache (timers [HEAP0]);
1745	downheap (timers, timercnt, HEAP0);	1853	downheap (timers, timercnt, HEAP0);
		1854	}
		1855	else
		1856	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1857
		1858	EV_FREQUENT_CHECK;
		1859	feed_reverse (EV_A_ (W)w);
1746	}	1860	}
1747	else	1861	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1748	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1749		1862
1750	EV_FREQUENT_CHECK;
1751	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1863	feed_reverse_done (EV_A_ EV_TIMEOUT);
1752	}	1864	}
1753	}	1865	}
1754		1866
1755	#if EV_PERIODIC_ENABLE	1867	#if EV_PERIODIC_ENABLE
1756	void inline_size	1868	/* make periodics pending */
		1869	inline_size void
1757	periodics_reify (EV_P)	1870	periodics_reify (EV_P)
1758	{	1871	{
1759	EV_FREQUENT_CHECK;	1872	EV_FREQUENT_CHECK;
1760		1873
1761	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	1874	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1762	{	1875	{
1763	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	1876	int feed_count = 0;
1764		1877
1765	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	1878	do
1766
1767	/* first reschedule or stop timer */
1768	if (w->reschedule_cb)
1769	{	1879	{
		1880	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1881
		1882	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		1883
		1884	/* first reschedule or stop timer */
		1885	if (w->reschedule_cb)
		1886	{
1770	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1887	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1771		1888
1772	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));	1889	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1773		1890
1774	ANHE_at_cache (periodics [HEAP0]);	1891	ANHE_at_cache (periodics [HEAP0]);
1775	downheap (periodics, periodiccnt, HEAP0);	1892	downheap (periodics, periodiccnt, HEAP0);
		1893	}
		1894	else if (w->interval)
		1895	{
		1896	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1897	/* if next trigger time is not sufficiently in the future, put it there */
		1898	/* this might happen because of floating point inexactness */
		1899	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1900	{
		1901	ev_at (w) += w->interval;
		1902
		1903	/* if interval is unreasonably low we might still have a time in the past */
		1904	/* so correct this. this will make the periodic very inexact, but the user */
		1905	/* has effectively asked to get triggered more often than possible */
		1906	if (ev_at (w) < ev_rt_now)
		1907	ev_at (w) = ev_rt_now;
		1908	}
		1909
		1910	ANHE_at_cache (periodics [HEAP0]);
		1911	downheap (periodics, periodiccnt, HEAP0);
		1912	}
		1913	else
		1914	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1915
		1916	EV_FREQUENT_CHECK;
		1917	feed_reverse (EV_A_ (W)w);
1776	}	1918	}
1777	else if (w->interval)	1919	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		1920
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);	1921	feed_reverse_done (EV_A_ EV_PERIODIC);
1801	}	1922	}
1802	}	1923	}
1803		1924
		1925	/* simply recalculate all periodics */
		1926	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1804	static void noinline	1927	static void noinline
1805	periodics_reschedule (EV_P)	1928	periodics_reschedule (EV_P)
1806	{	1929	{
1807	int i;	1930	int i;
1808		1931
…		…
1821		1944
1822	reheap (periodics, periodiccnt);	1945	reheap (periodics, periodiccnt);
1823	}	1946	}
1824	#endif	1947	#endif
1825		1948
1826	void inline_speed	1949	/* adjust all timers by a given offset */
		1950	static void noinline
		1951	timers_reschedule (EV_P_ ev_tstamp adjust)
		1952	{
		1953	int i;
		1954
		1955	for (i = 0; i < timercnt; ++i)
		1956	{
		1957	ANHE *he = timers + i + HEAP0;
		1958	ANHE_w (*he)->at += adjust;
		1959	ANHE_at_cache (*he);
		1960	}
		1961	}
		1962
		1963	/* fetch new monotonic and realtime times from the kernel */
		1964	/* also detetc if there was a timejump, and act accordingly */
		1965	inline_speed void
1827	time_update (EV_P_ ev_tstamp max_block)	1966	time_update (EV_P_ ev_tstamp max_block)
1828	{	1967	{
1829	int i;
1830
1831	#if EV_USE_MONOTONIC	1968	#if EV_USE_MONOTONIC
1832	if (expect_true (have_monotonic))	1969	if (expect_true (have_monotonic))
1833	{	1970	{
		1971	int i;
1834	ev_tstamp odiff = rtmn_diff;	1972	ev_tstamp odiff = rtmn_diff;
1835		1973
1836	mn_now = get_clock ();	1974	mn_now = get_clock ();
1837		1975
1838	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	1976	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1864	ev_rt_now = ev_time ();	2002	ev_rt_now = ev_time ();
1865	mn_now = get_clock ();	2003	mn_now = get_clock ();
1866	now_floor = mn_now;	2004	now_floor = mn_now;
1867	}	2005	}
1868		2006
		2007	/* no timer adjustment, as the monotonic clock doesn't jump */
		2008	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1869	# if EV_PERIODIC_ENABLE	2009	# if EV_PERIODIC_ENABLE
1870	periodics_reschedule (EV_A);	2010	periodics_reschedule (EV_A);
1871	# endif	2011	# endif
1872	/* no timer adjustment, as the monotonic clock doesn't jump */
1873	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1874	}	2012	}
1875	else	2013	else
1876	#endif	2014	#endif
1877	{	2015	{
1878	ev_rt_now = ev_time ();	2016	ev_rt_now = ev_time ();
1879		2017
1880	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2018	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1881	{	2019	{
		2020	/* adjust timers. this is easy, as the offset is the same for all of them */
		2021	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1882	#if EV_PERIODIC_ENABLE	2022	#if EV_PERIODIC_ENABLE
1883	periodics_reschedule (EV_A);	2023	periodics_reschedule (EV_A);
1884	#endif	2024	#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	}	2025	}
1893		2026
1894	mn_now = ev_rt_now;	2027	mn_now = ev_rt_now;
1895	}	2028	}
1896	}	2029	}
1897		2030
1898	void	2031	void
1899	ev_ref (EV_P)
1900	{
1901	++activecnt;
1902	}
1903
1904	void
1905	ev_unref (EV_P)
1906	{
1907	--activecnt;
1908	}
1909
1910	static int loop_done;
1911
1912	void
1913	ev_loop (EV_P_ int flags)	2032	ev_loop (EV_P_ int flags)
1914	{	2033	{
		2034	++loop_depth;
		2035
1915	loop_done = EVUNLOOP_CANCEL;	2036	loop_done = EVUNLOOP_CANCEL;
1916		2037
1917	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2038	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1918		2039
1919	do	2040	do
…		…
1946	{	2067	{
1947	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2068	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1948	call_pending (EV_A);	2069	call_pending (EV_A);
1949	}	2070	}
1950		2071
1951	if (expect_false (!activecnt))
1952	break;
1953
1954	/* we might have forked, so reify kernel state if necessary */	2072	/* we might have forked, so reify kernel state if necessary */
1955	if (expect_false (postfork))	2073	if (expect_false (postfork))
1956	loop_fork (EV_A);	2074	loop_fork (EV_A);
1957		2075
1958	/* update fd-related kernel structures */	2076	/* update fd-related kernel structures */
…		…
1963	ev_tstamp waittime = 0.;	2081	ev_tstamp waittime = 0.;
1964	ev_tstamp sleeptime = 0.;	2082	ev_tstamp sleeptime = 0.;
1965		2083
1966	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2084	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1967	{	2085	{
		2086	/* remember old timestamp for io_blocktime calculation */
		2087	ev_tstamp prev_mn_now = mn_now;
		2088
1968	/* update time to cancel out callback processing overhead */	2089	/* update time to cancel out callback processing overhead */
1969	time_update (EV_A_ 1e100);	2090	time_update (EV_A_ 1e100);
1970		2091
1971	waittime = MAX_BLOCKTIME;	2092	waittime = MAX_BLOCKTIME;
1972		2093
…		…
1982	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2103	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1983	if (waittime > to) waittime = to;	2104	if (waittime > to) waittime = to;
1984	}	2105	}
1985	#endif	2106	#endif
1986		2107
		2108	/* don't let timeouts decrease the waittime below timeout_blocktime */
1987	if (expect_false (waittime < timeout_blocktime))	2109	if (expect_false (waittime < timeout_blocktime))
1988	waittime = timeout_blocktime;	2110	waittime = timeout_blocktime;
1989		2111
1990	sleeptime = waittime - backend_fudge;	2112	/* extra check because io_blocktime is commonly 0 */
1991
1992	if (expect_true (sleeptime > io_blocktime))	2113	if (expect_false (io_blocktime))
1993	sleeptime = io_blocktime;
1994
1995	if (sleeptime)
1996	{	2114	{
		2115	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2116
		2117	if (sleeptime > waittime - backend_fudge)
		2118	sleeptime = waittime - backend_fudge;
		2119
		2120	if (expect_true (sleeptime > 0.))
		2121	{
1997	ev_sleep (sleeptime);	2122	ev_sleep (sleeptime);
1998	waittime -= sleeptime;	2123	waittime -= sleeptime;
		2124	}
1999	}	2125	}
2000	}	2126	}
2001		2127
2002	++loop_count;	2128	++loop_count;
2003	backend_poll (EV_A_ waittime);	2129	backend_poll (EV_A_ waittime);
…		…
2029	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2155	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2030	));	2156	));
2031		2157
2032	if (loop_done == EVUNLOOP_ONE)	2158	if (loop_done == EVUNLOOP_ONE)
2033	loop_done = EVUNLOOP_CANCEL;	2159	loop_done = EVUNLOOP_CANCEL;
		2160
		2161	--loop_depth;
2034	}	2162	}
2035		2163
2036	void	2164	void
2037	ev_unloop (EV_P_ int how)	2165	ev_unloop (EV_P_ int how)
2038	{	2166	{
2039	loop_done = how;	2167	loop_done = how;
2040	}	2168	}
2041		2169
		2170	void
		2171	ev_ref (EV_P)
		2172	{
		2173	++activecnt;
		2174	}
		2175
		2176	void
		2177	ev_unref (EV_P)
		2178	{
		2179	--activecnt;
		2180	}
		2181
		2182	void
		2183	ev_now_update (EV_P)
		2184	{
		2185	time_update (EV_A_ 1e100);
		2186	}
		2187
		2188	void
		2189	ev_suspend (EV_P)
		2190	{
		2191	ev_now_update (EV_A);
		2192	}
		2193
		2194	void
		2195	ev_resume (EV_P)
		2196	{
		2197	ev_tstamp mn_prev = mn_now;
		2198
		2199	ev_now_update (EV_A);
		2200	timers_reschedule (EV_A_ mn_now - mn_prev);
		2201	#if EV_PERIODIC_ENABLE
		2202	/* TODO: really do this? */
		2203	periodics_reschedule (EV_A);
		2204	#endif
		2205	}
		2206
2042	/*****************************************************************************/	2207	/*****************************************************************************/
		2208	/* singly-linked list management, used when the expected list length is short */
2043		2209
2044	void inline_size	2210	inline_size void
2045	wlist_add (WL *head, WL elem)	2211	wlist_add (WL *head, WL elem)
2046	{	2212	{
2047	elem->next = *head;	2213	elem->next = *head;
2048	*head = elem;	2214	*head = elem;
2049	}	2215	}
2050		2216
2051	void inline_size	2217	inline_size void
2052	wlist_del (WL *head, WL elem)	2218	wlist_del (WL *head, WL elem)
2053	{	2219	{
2054	while (*head)	2220	while (*head)
2055	{	2221	{
2056	if (*head == elem)	2222	if (*head == elem)
…		…
2061		2227
2062	head = &(*head)->next;	2228	head = &(*head)->next;
2063	}	2229	}
2064	}	2230	}
2065		2231
2066	void inline_speed	2232	/* internal, faster, version of ev_clear_pending */
		2233	inline_speed void
2067	clear_pending (EV_P_ W w)	2234	clear_pending (EV_P_ W w)
2068	{	2235	{
2069	if (w->pending)	2236	if (w->pending)
2070	{	2237	{
2071	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2238	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2072	w->pending = 0;	2239	w->pending = 0;
2073	}	2240	}
2074	}	2241	}
2075		2242
2076	int	2243	int
…		…
2080	int pending = w_->pending;	2247	int pending = w_->pending;
2081		2248
2082	if (expect_true (pending))	2249	if (expect_true (pending))
2083	{	2250	{
2084	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2251	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2252	p->w = (W)&pending_w;
2085	w_->pending = 0;	2253	w_->pending = 0;
2086	p->w = 0;
2087	return p->events;	2254	return p->events;
2088	}	2255	}
2089	else	2256	else
2090	return 0;	2257	return 0;
2091	}	2258	}
2092		2259
2093	void inline_size	2260	inline_size void
2094	pri_adjust (EV_P_ W w)	2261	pri_adjust (EV_P_ W w)
2095	{	2262	{
2096	int pri = w->priority;	2263	int pri = w->priority;
2097	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2264	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2098	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2265	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2099	w->priority = pri;	2266	w->priority = pri;
2100	}	2267	}
2101		2268
2102	void inline_speed	2269	inline_speed void
2103	ev_start (EV_P_ W w, int active)	2270	ev_start (EV_P_ W w, int active)
2104	{	2271	{
2105	pri_adjust (EV_A_ w);	2272	pri_adjust (EV_A_ w);
2106	w->active = active;	2273	w->active = active;
2107	ev_ref (EV_A);	2274	ev_ref (EV_A);
2108	}	2275	}
2109		2276
2110	void inline_size	2277	inline_size void
2111	ev_stop (EV_P_ W w)	2278	ev_stop (EV_P_ W w)
2112	{	2279	{
2113	ev_unref (EV_A);	2280	ev_unref (EV_A);
2114	w->active = 0;	2281	w->active = 0;
2115	}	2282	}
…		…
2122	int fd = w->fd;	2289	int fd = w->fd;
2123		2290
2124	if (expect_false (ev_is_active (w)))	2291	if (expect_false (ev_is_active (w)))
2125	return;	2292	return;
2126		2293
2127	assert (("ev_io_start called with negative fd", fd >= 0));	2294	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2295	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2128		2296
2129	EV_FREQUENT_CHECK;	2297	EV_FREQUENT_CHECK;
2130		2298
2131	ev_start (EV_A_ (W)w, 1);	2299	ev_start (EV_A_ (W)w, 1);
2132	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2300	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2133	wlist_add (&anfds[fd].head, (WL)w);	2301	wlist_add (&anfds[fd].head, (WL)w);
2134		2302
2135	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2303	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
2136	w->events &= ~EV_IOFDSET;	2304	w->events &= ~EV__IOFDSET;
2137		2305
2138	EV_FREQUENT_CHECK;	2306	EV_FREQUENT_CHECK;
2139	}	2307	}
2140		2308
2141	void noinline	2309	void noinline
…		…
2143	{	2311	{
2144	clear_pending (EV_A_ (W)w);	2312	clear_pending (EV_A_ (W)w);
2145	if (expect_false (!ev_is_active (w)))	2313	if (expect_false (!ev_is_active (w)))
2146	return;	2314	return;
2147		2315
2148	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2316	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2149		2317
2150	EV_FREQUENT_CHECK;	2318	EV_FREQUENT_CHECK;
2151		2319
2152	wlist_del (&anfds[w->fd].head, (WL)w);	2320	wlist_del (&anfds[w->fd].head, (WL)w);
2153	ev_stop (EV_A_ (W)w);	2321	ev_stop (EV_A_ (W)w);
…		…
2163	if (expect_false (ev_is_active (w)))	2331	if (expect_false (ev_is_active (w)))
2164	return;	2332	return;
2165		2333
2166	ev_at (w) += mn_now;	2334	ev_at (w) += mn_now;
2167		2335
2168	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2336	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2169		2337
2170	EV_FREQUENT_CHECK;	2338	EV_FREQUENT_CHECK;
2171		2339
2172	++timercnt;	2340	++timercnt;
2173	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);	2341	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
…		…
2176	ANHE_at_cache (timers [ev_active (w)]);	2344	ANHE_at_cache (timers [ev_active (w)]);
2177	upheap (timers, ev_active (w));	2345	upheap (timers, ev_active (w));
2178		2346
2179	EV_FREQUENT_CHECK;	2347	EV_FREQUENT_CHECK;
2180		2348
2181	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2349	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2182	}	2350	}
2183		2351
2184	void noinline	2352	void noinline
2185	ev_timer_stop (EV_P_ ev_timer *w)	2353	ev_timer_stop (EV_P_ ev_timer *w)
2186	{	2354	{
…		…
2191	EV_FREQUENT_CHECK;	2359	EV_FREQUENT_CHECK;
2192		2360
2193	{	2361	{
2194	int active = ev_active (w);	2362	int active = ev_active (w);
2195		2363
2196	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2364	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2197		2365
2198	--timercnt;	2366	--timercnt;
2199		2367
2200	if (expect_true (active < timercnt + HEAP0))	2368	if (expect_true (active < timercnt + HEAP0))
2201	{	2369	{
…		…
2245		2413
2246	if (w->reschedule_cb)	2414	if (w->reschedule_cb)
2247	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2415	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2248	else if (w->interval)	2416	else if (w->interval)
2249	{	2417	{
2250	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2418	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2251	/* this formula differs from the one in periodic_reify because we do not always round up */	2419	/* this formula differs from the one in periodic_reify because we do not always round up */
2252	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2420	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2253	}	2421	}
2254	else	2422	else
2255	ev_at (w) = w->offset;	2423	ev_at (w) = w->offset;
…		…
2263	ANHE_at_cache (periodics [ev_active (w)]);	2431	ANHE_at_cache (periodics [ev_active (w)]);
2264	upheap (periodics, ev_active (w));	2432	upheap (periodics, ev_active (w));
2265		2433
2266	EV_FREQUENT_CHECK;	2434	EV_FREQUENT_CHECK;
2267		2435
2268	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2436	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2269	}	2437	}
2270		2438
2271	void noinline	2439	void noinline
2272	ev_periodic_stop (EV_P_ ev_periodic *w)	2440	ev_periodic_stop (EV_P_ ev_periodic *w)
2273	{	2441	{
…		…
2278	EV_FREQUENT_CHECK;	2446	EV_FREQUENT_CHECK;
2279		2447
2280	{	2448	{
2281	int active = ev_active (w);	2449	int active = ev_active (w);
2282		2450
2283	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2451	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2284		2452
2285	--periodiccnt;	2453	--periodiccnt;
2286		2454
2287	if (expect_true (active < periodiccnt + HEAP0))	2455	if (expect_true (active < periodiccnt + HEAP0))
2288	{	2456	{
…		…
2311		2479
2312	void noinline	2480	void noinline
2313	ev_signal_start (EV_P_ ev_signal *w)	2481	ev_signal_start (EV_P_ ev_signal *w)
2314	{	2482	{
2315	#if EV_MULTIPLICITY	2483	#if EV_MULTIPLICITY
2316	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2484	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2317	#endif	2485	#endif
2318	if (expect_false (ev_is_active (w)))	2486	if (expect_false (ev_is_active (w)))
2319	return;	2487	return;
2320		2488
2321	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2489	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2322		2490
2323	evpipe_init (EV_A);	2491	evpipe_init (EV_A);
2324		2492
2325	EV_FREQUENT_CHECK;	2493	EV_FREQUENT_CHECK;
2326		2494
…		…
2329	sigset_t full, prev;	2497	sigset_t full, prev;
2330	sigfillset (&full);	2498	sigfillset (&full);
2331	sigprocmask (SIG_SETMASK, &full, &prev);	2499	sigprocmask (SIG_SETMASK, &full, &prev);
2332	#endif	2500	#endif
2333		2501
2334	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2502	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2335		2503
2336	#ifndef _WIN32	2504	#ifndef _WIN32
2337	sigprocmask (SIG_SETMASK, &prev, 0);	2505	sigprocmask (SIG_SETMASK, &prev, 0);
2338	#endif	2506	#endif
2339	}	2507	}
…		…
2377		2545
2378	void	2546	void
2379	ev_child_start (EV_P_ ev_child *w)	2547	ev_child_start (EV_P_ ev_child *w)
2380	{	2548	{
2381	#if EV_MULTIPLICITY	2549	#if EV_MULTIPLICITY
2382	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2550	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2383	#endif	2551	#endif
2384	if (expect_false (ev_is_active (w)))	2552	if (expect_false (ev_is_active (w)))
2385	return;	2553	return;
2386		2554
2387	EV_FREQUENT_CHECK;	2555	EV_FREQUENT_CHECK;
…		…
2412	# ifdef _WIN32	2580	# ifdef _WIN32
2413	# undef lstat	2581	# undef lstat
2414	# define lstat(a,b) _stati64 (a,b)	2582	# define lstat(a,b) _stati64 (a,b)
2415	# endif	2583	# endif
2416		2584
2417	#define DEF_STAT_INTERVAL 5.0074891	2585	#define DEF_STAT_INTERVAL 5.0074891
		2586	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2418	#define MIN_STAT_INTERVAL 0.1074891	2587	#define MIN_STAT_INTERVAL 0.1074891
2419		2588
2420	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2589	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2421		2590
2422	#if EV_USE_INOTIFY	2591	#if EV_USE_INOTIFY
2423	# define EV_INOTIFY_BUFSIZE 8192	2592	# define EV_INOTIFY_BUFSIZE 8192
…		…
2427	{	2596	{
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);	2597	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2429		2598
2430	if (w->wd < 0)	2599	if (w->wd < 0)
2431	{	2600	{
		2601	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 */	2602	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2433		2603
2434	/* monitor some parent directory for speedup hints */	2604	/* monitor some parent directory for speedup hints */
2435	/* note that exceeding the hardcoded limit is not a correctness issue, */	2605	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2436	/* but an efficiency issue only */	2606	/* but an efficiency issue only */
2437	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2607	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2438	{	2608	{
2439	char path [4096];	2609	char path [4096];
2440	strcpy (path, w->path);	2610	strcpy (path, w->path);
…		…
2444	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2614	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2445	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2615	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2446		2616
2447	char *pend = strrchr (path, '/');	2617	char *pend = strrchr (path, '/');
2448		2618
2449	if (!pend)	2619	if (!pend || pend == path)
2450	break; /* whoops, no '/', complain to your admin */	2620	break;
2451		2621
2452	*pend = 0;	2622	*pend = 0;
2453	w->wd = inotify_add_watch (fs_fd, path, mask);	2623	w->wd = inotify_add_watch (fs_fd, path, mask);
2454	}	2624	}
2455	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2625	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2456	}	2626	}
2457	}	2627	}
2458	else
2459	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2460		2628
2461	if (w->wd >= 0)	2629	if (w->wd >= 0)
		2630	{
2462	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2631	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2632
		2633	/* now local changes will be tracked by inotify, but remote changes won't */
		2634	/* unless the filesystem it known to be local, we therefore still poll */
		2635	/* also do poll on <2.6.25, but with normal frequency */
		2636	struct statfs sfs;
		2637
		2638	if (fs_2625 && !statfs (w->path, &sfs))
		2639	if (sfs.f_type == 0x1373 /* devfs */
		2640	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2641	|| sfs.f_type == 0x3153464a /* jfs */
		2642	|| sfs.f_type == 0x52654973 /* reiser3 */
		2643	|| sfs.f_type == 0x01021994 /* tempfs */
		2644	|| sfs.f_type == 0x58465342 /* xfs */)
		2645	return;
		2646
		2647	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2648	ev_timer_again (EV_A_ &w->timer);
		2649	}
2463	}	2650	}
2464		2651
2465	static void noinline	2652	static void noinline
2466	infy_del (EV_P_ ev_stat *w)	2653	infy_del (EV_P_ ev_stat *w)
2467	{	2654	{
…		…
2481		2668
2482	static void noinline	2669	static void noinline
2483	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2670	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2484	{	2671	{
2485	if (slot < 0)	2672	if (slot < 0)
2486	/* overflow, need to check for all hahs slots */	2673	/* overflow, need to check for all hash slots */
2487	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2674	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2488	infy_wd (EV_A_ slot, wd, ev);	2675	infy_wd (EV_A_ slot, wd, ev);
2489	else	2676	else
2490	{	2677	{
2491	WL w_;	2678	WL w_;
…		…
2497		2684
2498	if (w->wd == wd || wd == -1)	2685	if (w->wd == wd || wd == -1)
2499	{	2686	{
2500	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2687	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2501	{	2688	{
		2689	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2502	w->wd = -1;	2690	w->wd = -1;
2503	infy_add (EV_A_ w); /* re-add, no matter what */	2691	infy_add (EV_A_ w); /* re-add, no matter what */
2504	}	2692	}
2505		2693
2506	stat_timer_cb (EV_A_ &w->timer, 0);	2694	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2519		2707
2520	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2708	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2521	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2709	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2522	}	2710	}
2523		2711
2524	void inline_size	2712	inline_size void
		2713	check_2625 (EV_P)
		2714	{
		2715	/* kernels < 2.6.25 are borked
		2716	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2717	*/
		2718	struct utsname buf;
		2719	int major, minor, micro;
		2720
		2721	if (uname (&buf))
		2722	return;
		2723
		2724	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2725	return;
		2726
		2727	if (major < 2
		2728	|| (major == 2 && minor < 6)
		2729	|| (major == 2 && minor == 6 && micro < 25))
		2730	return;
		2731
		2732	fs_2625 = 1;
		2733	}
		2734
		2735	inline_size void
2525	infy_init (EV_P)	2736	infy_init (EV_P)
2526	{	2737	{
2527	if (fs_fd != -2)	2738	if (fs_fd != -2)
2528	return;	2739	return;
		2740
		2741	fs_fd = -1;
		2742
		2743	check_2625 (EV_A);
2529		2744
2530	fs_fd = inotify_init ();	2745	fs_fd = inotify_init ();
2531		2746
2532	if (fs_fd >= 0)	2747	if (fs_fd >= 0)
2533	{	2748	{
…		…
2535	ev_set_priority (&fs_w, EV_MAXPRI);	2750	ev_set_priority (&fs_w, EV_MAXPRI);
2536	ev_io_start (EV_A_ &fs_w);	2751	ev_io_start (EV_A_ &fs_w);
2537	}	2752	}
2538	}	2753	}
2539		2754
2540	void inline_size	2755	inline_size void
2541	infy_fork (EV_P)	2756	infy_fork (EV_P)
2542	{	2757	{
2543	int slot;	2758	int slot;
2544		2759
2545	if (fs_fd < 0)	2760	if (fs_fd < 0)
…		…
2561	w->wd = -1;	2776	w->wd = -1;
2562		2777
2563	if (fs_fd >= 0)	2778	if (fs_fd >= 0)
2564	infy_add (EV_A_ w); /* re-add, no matter what */	2779	infy_add (EV_A_ w); /* re-add, no matter what */
2565	else	2780	else
2566	ev_timer_start (EV_A_ &w->timer);	2781	ev_timer_again (EV_A_ &w->timer);
2567	}	2782	}
2568
2569	}	2783	}
2570	}	2784	}
2571		2785
		2786	#endif
		2787
		2788	#ifdef _WIN32
		2789	# define EV_LSTAT(p,b) _stati64 (p, b)
		2790	#else
		2791	# define EV_LSTAT(p,b) lstat (p, b)
2572	#endif	2792	#endif
2573		2793
2574	void	2794	void
2575	ev_stat_stat (EV_P_ ev_stat *w)	2795	ev_stat_stat (EV_P_ ev_stat *w)
2576	{	2796	{
…		…
2603	|| w->prev.st_atime != w->attr.st_atime	2823	|| w->prev.st_atime != w->attr.st_atime
2604	|| w->prev.st_mtime != w->attr.st_mtime	2824	|| w->prev.st_mtime != w->attr.st_mtime
2605	|| w->prev.st_ctime != w->attr.st_ctime	2825	|| w->prev.st_ctime != w->attr.st_ctime
2606	) {	2826	) {
2607	#if EV_USE_INOTIFY	2827	#if EV_USE_INOTIFY
		2828	if (fs_fd >= 0)
		2829	{
2608	infy_del (EV_A_ w);	2830	infy_del (EV_A_ w);
2609	infy_add (EV_A_ w);	2831	infy_add (EV_A_ w);
2610	ev_stat_stat (EV_A_ w); /* avoid race... */	2832	ev_stat_stat (EV_A_ w); /* avoid race... */
		2833	}
2611	#endif	2834	#endif
2612		2835
2613	ev_feed_event (EV_A_ w, EV_STAT);	2836	ev_feed_event (EV_A_ w, EV_STAT);
2614	}	2837	}
2615	}	2838	}
…		…
2618	ev_stat_start (EV_P_ ev_stat *w)	2841	ev_stat_start (EV_P_ ev_stat *w)
2619	{	2842	{
2620	if (expect_false (ev_is_active (w)))	2843	if (expect_false (ev_is_active (w)))
2621	return;	2844	return;
2622		2845
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);	2846	ev_stat_stat (EV_A_ w);
2628		2847
		2848	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2629	if (w->interval < MIN_STAT_INTERVAL)	2849	w->interval = MIN_STAT_INTERVAL;
2630	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2631		2850
2632	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2851	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2633	ev_set_priority (&w->timer, ev_priority (w));	2852	ev_set_priority (&w->timer, ev_priority (w));
2634		2853
2635	#if EV_USE_INOTIFY	2854	#if EV_USE_INOTIFY
2636	infy_init (EV_A);	2855	infy_init (EV_A);
2637		2856
2638	if (fs_fd >= 0)	2857	if (fs_fd >= 0)
2639	infy_add (EV_A_ w);	2858	infy_add (EV_A_ w);
2640	else	2859	else
2641	#endif	2860	#endif
2642	ev_timer_start (EV_A_ &w->timer);	2861	ev_timer_again (EV_A_ &w->timer);
2643		2862
2644	ev_start (EV_A_ (W)w, 1);	2863	ev_start (EV_A_ (W)w, 1);
2645		2864
2646	EV_FREQUENT_CHECK;	2865	EV_FREQUENT_CHECK;
2647	}	2866	}
…		…
2817	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3036	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2818	}	3037	}
2819	}	3038	}
2820	}	3039	}
2821		3040
		3041	static void
		3042	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3043	{
		3044	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3045
		3046	ev_embed_stop (EV_A_ w);
		3047
		3048	{
		3049	struct ev_loop *loop = w->other;
		3050
		3051	ev_loop_fork (EV_A);
		3052	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3053	}
		3054
		3055	ev_embed_start (EV_A_ w);
		3056	}
		3057
2822	#if 0	3058	#if 0
2823	static void	3059	static void
2824	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3060	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2825	{	3061	{
2826	ev_idle_stop (EV_A_ idle);	3062	ev_idle_stop (EV_A_ idle);
…		…
2833	if (expect_false (ev_is_active (w)))	3069	if (expect_false (ev_is_active (w)))
2834	return;	3070	return;
2835		3071
2836	{	3072	{
2837	struct ev_loop *loop = w->other;	3073	struct ev_loop *loop = w->other;
2838	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3074	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2839	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3075	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2840	}	3076	}
2841		3077
2842	EV_FREQUENT_CHECK;	3078	EV_FREQUENT_CHECK;
2843		3079
…		…
2846		3082
2847	ev_prepare_init (&w->prepare, embed_prepare_cb);	3083	ev_prepare_init (&w->prepare, embed_prepare_cb);
2848	ev_set_priority (&w->prepare, EV_MINPRI);	3084	ev_set_priority (&w->prepare, EV_MINPRI);
2849	ev_prepare_start (EV_A_ &w->prepare);	3085	ev_prepare_start (EV_A_ &w->prepare);
2850		3086
		3087	ev_fork_init (&w->fork, embed_fork_cb);
		3088	ev_fork_start (EV_A_ &w->fork);
		3089
2851	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3090	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2852		3091
2853	ev_start (EV_A_ (W)w, 1);	3092	ev_start (EV_A_ (W)w, 1);
2854		3093
2855	EV_FREQUENT_CHECK;	3094	EV_FREQUENT_CHECK;
…		…
2862	if (expect_false (!ev_is_active (w)))	3101	if (expect_false (!ev_is_active (w)))
2863	return;	3102	return;
2864		3103
2865	EV_FREQUENT_CHECK;	3104	EV_FREQUENT_CHECK;
2866		3105
2867	ev_io_stop (EV_A_ &w->io);	3106	ev_io_stop (EV_A_ &w->io);
2868	ev_prepare_stop (EV_A_ &w->prepare);	3107	ev_prepare_stop (EV_A_ &w->prepare);
2869		3108	ev_fork_stop (EV_A_ &w->fork);
2870	ev_stop (EV_A_ (W)w);
2871		3109
2872	EV_FREQUENT_CHECK;	3110	EV_FREQUENT_CHECK;
2873	}	3111	}
2874	#endif	3112	#endif
2875		3113
…		…
2972	once_cb (EV_P_ struct ev_once *once, int revents)	3210	once_cb (EV_P_ struct ev_once *once, int revents)
2973	{	3211	{
2974	void (*cb)(int revents, void *arg) = once->cb;	3212	void (*cb)(int revents, void *arg) = once->cb;
2975	void *arg = once->arg;	3213	void *arg = once->arg;
2976		3214
2977	ev_io_stop (EV_A_ &once->io);	3215	ev_io_stop (EV_A_ &once->io);
2978	ev_timer_stop (EV_A_ &once->to);	3216	ev_timer_stop (EV_A_ &once->to);
2979	ev_free (once);	3217	ev_free (once);
2980		3218
2981	cb (revents, arg);	3219	cb (revents, arg);
2982	}	3220	}
2983		3221
2984	static void	3222	static void
2985	once_cb_io (EV_P_ ev_io *w, int revents)	3223	once_cb_io (EV_P_ ev_io *w, int revents)
2986	{	3224	{
2987	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3225	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3226
		3227	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2988	}	3228	}
2989		3229
2990	static void	3230	static void
2991	once_cb_to (EV_P_ ev_timer *w, int revents)	3231	once_cb_to (EV_P_ ev_timer *w, int revents)
2992	{	3232	{
2993	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3233	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3234
		3235	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2994	}	3236	}
2995		3237
2996	void	3238	void
2997	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3239	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2998	{	3240	{
…		…
3020	ev_timer_set (&once->to, timeout, 0.);	3262	ev_timer_set (&once->to, timeout, 0.);
3021	ev_timer_start (EV_A_ &once->to);	3263	ev_timer_start (EV_A_ &once->to);
3022	}	3264	}
3023	}	3265	}
3024		3266
		3267	/*****************************************************************************/
		3268
		3269	#if EV_WALK_ENABLE
		3270	void
		3271	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3272	{
		3273	int i, j;
		3274	ev_watcher_list *wl, *wn;
		3275
		3276	if (types & (EV_IO | EV_EMBED))
		3277	for (i = 0; i < anfdmax; ++i)
		3278	for (wl = anfds [i].head; wl; )
		3279	{
		3280	wn = wl->next;
		3281
		3282	#if EV_EMBED_ENABLE
		3283	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3284	{
		3285	if (types & EV_EMBED)
		3286	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3287	}
		3288	else
		3289	#endif
		3290	#if EV_USE_INOTIFY
		3291	if (ev_cb ((ev_io *)wl) == infy_cb)
		3292	;
		3293	else
		3294	#endif
		3295	if ((ev_io *)wl != &pipe_w)
		3296	if (types & EV_IO)
		3297	cb (EV_A_ EV_IO, wl);
		3298
		3299	wl = wn;
		3300	}
		3301
		3302	if (types & (EV_TIMER | EV_STAT))
		3303	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3304	#if EV_STAT_ENABLE
		3305	/*TODO: timer is not always active*/
		3306	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3307	{
		3308	if (types & EV_STAT)
		3309	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3310	}
		3311	else
		3312	#endif
		3313	if (types & EV_TIMER)
		3314	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3315
		3316	#if EV_PERIODIC_ENABLE
		3317	if (types & EV_PERIODIC)
		3318	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3319	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3320	#endif
		3321
		3322	#if EV_IDLE_ENABLE
		3323	if (types & EV_IDLE)
		3324	for (j = NUMPRI; i--; )
		3325	for (i = idlecnt [j]; i--; )
		3326	cb (EV_A_ EV_IDLE, idles [j][i]);
		3327	#endif
		3328
		3329	#if EV_FORK_ENABLE
		3330	if (types & EV_FORK)
		3331	for (i = forkcnt; i--; )
		3332	if (ev_cb (forks [i]) != embed_fork_cb)
		3333	cb (EV_A_ EV_FORK, forks [i]);
		3334	#endif
		3335
		3336	#if EV_ASYNC_ENABLE
		3337	if (types & EV_ASYNC)
		3338	for (i = asynccnt; i--; )
		3339	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3340	#endif
		3341
		3342	if (types & EV_PREPARE)
		3343	for (i = preparecnt; i--; )
		3344	#if EV_EMBED_ENABLE
		3345	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3346	#endif
		3347	cb (EV_A_ EV_PREPARE, prepares [i]);
		3348
		3349	if (types & EV_CHECK)
		3350	for (i = checkcnt; i--; )
		3351	cb (EV_A_ EV_CHECK, checks [i]);
		3352
		3353	if (types & EV_SIGNAL)
		3354	for (i = 0; i < signalmax; ++i)
		3355	for (wl = signals [i].head; wl; )
		3356	{
		3357	wn = wl->next;
		3358	cb (EV_A_ EV_SIGNAL, wl);
		3359	wl = wn;
		3360	}
		3361
		3362	if (types & EV_CHILD)
		3363	for (i = EV_PID_HASHSIZE; i--; )
		3364	for (wl = childs [i]; wl; )
		3365	{
		3366	wn = wl->next;
		3367	cb (EV_A_ EV_CHILD, wl);
		3368	wl = wn;
		3369	}
		3370	/* EV_STAT 0x00001000 /* stat data changed */
		3371	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3372	}
		3373	#endif
		3374
3025	#if EV_MULTIPLICITY	3375	#if EV_MULTIPLICITY
3026	#include "ev_wrap.h"	3376	#include "ev_wrap.h"
3027	#endif	3377	#endif
3028		3378
3029	#ifdef __cplusplus	3379	#ifdef __cplusplus

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