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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 1.296 by root, Thu Jul 9 09:11:20 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
…		…
347	# define inline_speed static noinline	391	# define inline_speed static noinline
348	#else	392	#else
349	# define inline_speed static inline	393	# define inline_speed static inline
350	#endif	394	#endif
351		395
352	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	396	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		397
		398	#if EV_MINPRI == EV_MAXPRI
		399	# define ABSPRI(w) (((W)w), 0)
		400	#else
353	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	401	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		402	#endif
354		403
355	#define EMPTY /* required for microsofts broken pseudo-c compiler */	404	#define EMPTY /* required for microsofts broken pseudo-c compiler */
356	#define EMPTY2(a,b) /* used to suppress some warnings */	405	#define EMPTY2(a,b) /* used to suppress some warnings */
357		406
358	typedef ev_watcher *W;	407	typedef ev_watcher *W;
…		…
360	typedef ev_watcher_time *WT;	409	typedef ev_watcher_time *WT;
361		410
362	#define ev_active(w) ((W)(w))->active	411	#define ev_active(w) ((W)(w))->active
363	#define ev_at(w) ((WT)(w))->at	412	#define ev_at(w) ((WT)(w))->at
364		413
365	#if EV_USE_MONOTONIC	414	#if EV_USE_REALTIME
366	/* sig_atomic_t is used to avoid per-thread variables or locking but still */	415	/* 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 */	416	/* giving it a reasonably high chance of working on typical architetcures */
		417	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		418	#endif
		419
		420	#if EV_USE_MONOTONIC
368	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	421	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
369	#endif	422	#endif
370		423
371	#ifdef _WIN32	424	#ifdef _WIN32
372	# include "ev_win32.c"	425	# include "ev_win32.c"
…		…
381	{	434	{
382	syserr_cb = cb;	435	syserr_cb = cb;
383	}	436	}
384		437
385	static void noinline	438	static void noinline
386	syserr (const char *msg)	439	ev_syserr (const char *msg)
387	{	440	{
388	if (!msg)	441	if (!msg)
389	msg = "(libev) system error";	442	msg = "(libev) system error";
390		443
391	if (syserr_cb)	444	if (syserr_cb)
…		…
437	#define ev_malloc(size) ev_realloc (0, (size))	490	#define ev_malloc(size) ev_realloc (0, (size))
438	#define ev_free(ptr) ev_realloc ((ptr), 0)	491	#define ev_free(ptr) ev_realloc ((ptr), 0)
439		492
440	/*****************************************************************************/	493	/*****************************************************************************/
441		494
		495	/* file descriptor info structure */
442	typedef struct	496	typedef struct
443	{	497	{
444	WL head;	498	WL head;
445	unsigned char events;	499	unsigned char events; /* the events watched for */
		500	unsigned char reify; /* flag set when this ANFD needs reification */
		501	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
446	unsigned char reify;	502	unsigned char unused;
		503	#if EV_USE_EPOLL
		504	unsigned int egen; /* generation counter to counter epoll bugs */
		505	#endif
447	#if EV_SELECT_IS_WINSOCKET	506	#if EV_SELECT_IS_WINSOCKET
448	SOCKET handle;	507	SOCKET handle;
449	#endif	508	#endif
450	} ANFD;	509	} ANFD;
451		510
		511	/* stores the pending event set for a given watcher */
452	typedef struct	512	typedef struct
453	{	513	{
454	W w;	514	W w;
455	int events;	515	int events; /* the pending event set for the given watcher */
456	} ANPENDING;	516	} ANPENDING;
457		517
458	#if EV_USE_INOTIFY	518	#if EV_USE_INOTIFY
459	/* hash table entry per inotify-id */	519	/* hash table entry per inotify-id */
460	typedef struct	520	typedef struct
…		…
463	} ANFS;	523	} ANFS;
464	#endif	524	#endif
465		525
466	/* Heap Entry */	526	/* Heap Entry */
467	#if EV_HEAP_CACHE_AT	527	#if EV_HEAP_CACHE_AT
		528	/* a heap element */
468	typedef struct {	529	typedef struct {
469	ev_tstamp at;	530	ev_tstamp at;
470	WT w;	531	WT w;
471	} ANHE;	532	} ANHE;
472		533
473	#define ANHE_w(he) (he).w /* access watcher, read-write */	534	#define ANHE_w(he) (he).w /* access watcher, read-write */
474	#define ANHE_at(he) (he).at /* access cached at, read-only */	535	#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 */	536	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
476	#else	537	#else
		538	/* a heap element */
477	typedef WT ANHE;	539	typedef WT ANHE;
478		540
479	#define ANHE_w(he) (he)	541	#define ANHE_w(he) (he)
480	#define ANHE_at(he) (he)->at	542	#define ANHE_at(he) (he)->at
481	#define ANHE_at_cache(he)	543	#define ANHE_at_cache(he)
…		…
507		569
508	#endif	570	#endif
509		571
510	/*****************************************************************************/	572	/*****************************************************************************/
511		573
		574	#ifndef EV_HAVE_EV_TIME
512	ev_tstamp	575	ev_tstamp
513	ev_time (void)	576	ev_time (void)
514	{	577	{
515	#if EV_USE_REALTIME	578	#if EV_USE_REALTIME
		579	if (expect_true (have_realtime))
		580	{
516	struct timespec ts;	581	struct timespec ts;
517	clock_gettime (CLOCK_REALTIME, &ts);	582	clock_gettime (CLOCK_REALTIME, &ts);
518	return ts.tv_sec + ts.tv_nsec * 1e-9;	583	return ts.tv_sec + ts.tv_nsec * 1e-9;
519	#else	584	}
		585	#endif
		586
520	struct timeval tv;	587	struct timeval tv;
521	gettimeofday (&tv, 0);	588	gettimeofday (&tv, 0);
522	return tv.tv_sec + tv.tv_usec * 1e-6;	589	return tv.tv_sec + tv.tv_usec * 1e-6;
523	#endif
524	}	590	}
		591	#endif
525		592
526	ev_tstamp inline_size	593	inline_size ev_tstamp
527	get_clock (void)	594	get_clock (void)
528	{	595	{
529	#if EV_USE_MONOTONIC	596	#if EV_USE_MONOTONIC
530	if (expect_true (have_monotonic))	597	if (expect_true (have_monotonic))
531	{	598	{
…		…
564	struct timeval tv;	631	struct timeval tv;
565		632
566	tv.tv_sec = (time_t)delay;	633	tv.tv_sec = (time_t)delay;
567	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	634	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
568		635
		636	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		637	/* somehting not guaranteed by newer posix versions, but guaranteed */
		638	/* by older ones */
569	select (0, 0, 0, 0, &tv);	639	select (0, 0, 0, 0, &tv);
570	#endif	640	#endif
571	}	641	}
572	}	642	}
573		643
574	/*****************************************************************************/	644	/*****************************************************************************/
575		645
576	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	646	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
577		647
578	int inline_size	648	/* find a suitable new size for the given array, */
		649	/* hopefully by rounding to a ncie-to-malloc size */
		650	inline_size int
579	array_nextsize (int elem, int cur, int cnt)	651	array_nextsize (int elem, int cur, int cnt)
580	{	652	{
581	int ncur = cur + 1;	653	int ncur = cur + 1;
582		654
583	do	655	do
…		…
600	array_realloc (int elem, void *base, int *cur, int cnt)	672	array_realloc (int elem, void *base, int *cur, int cnt)
601	{	673	{
602	*cur = array_nextsize (elem, *cur, cnt);	674	*cur = array_nextsize (elem, *cur, cnt);
603	return ev_realloc (base, elem * *cur);	675	return ev_realloc (base, elem * *cur);
604	}	676	}
		677
		678	#define array_init_zero(base,count) \
		679	memset ((void *)(base), 0, sizeof (*(base)) * (count))
605		680
606	#define array_needsize(type,base,cur,cnt,init) \	681	#define array_needsize(type,base,cur,cnt,init) \
607	if (expect_false ((cnt) > (cur))) \	682	if (expect_false ((cnt) > (cur))) \
608	{ \	683	{ \
609	int ocur_ = (cur); \	684	int ocur_ = (cur); \
…		…
621	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	696	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
622	}	697	}
623	#endif	698	#endif
624		699
625	#define array_free(stem, idx) \	700	#define array_free(stem, idx) \
626	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	701	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
627		702
628	/*****************************************************************************/	703	/*****************************************************************************/
		704
		705	/* dummy callback for pending events */
		706	static void noinline
		707	pendingcb (EV_P_ ev_prepare *w, int revents)
		708	{
		709	}
629		710
630	void noinline	711	void noinline
631	ev_feed_event (EV_P_ void *w, int revents)	712	ev_feed_event (EV_P_ void *w, int revents)
632	{	713	{
633	W w_ = (W)w;	714	W w_ = (W)w;
…		…
642	pendings [pri][w_->pending - 1].w = w_;	723	pendings [pri][w_->pending - 1].w = w_;
643	pendings [pri][w_->pending - 1].events = revents;	724	pendings [pri][w_->pending - 1].events = revents;
644	}	725	}
645	}	726	}
646		727
647	void inline_speed	728	inline_speed void
		729	feed_reverse (EV_P_ W w)
		730	{
		731	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		732	rfeeds [rfeedcnt++] = w;
		733	}
		734
		735	inline_size void
		736	feed_reverse_done (EV_P_ int revents)
		737	{
		738	do
		739	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		740	while (rfeedcnt);
		741	}
		742
		743	inline_speed void
648	queue_events (EV_P_ W *events, int eventcnt, int type)	744	queue_events (EV_P_ W *events, int eventcnt, int type)
649	{	745	{
650	int i;	746	int i;
651		747
652	for (i = 0; i < eventcnt; ++i)	748	for (i = 0; i < eventcnt; ++i)
653	ev_feed_event (EV_A_ events [i], type);	749	ev_feed_event (EV_A_ events [i], type);
654	}	750	}
655		751
656	/*****************************************************************************/	752	/*****************************************************************************/
657		753
658	void inline_size	754	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)	755	fd_event (EV_P_ int fd, int revents)
673	{	756	{
674	ANFD *anfd = anfds + fd;	757	ANFD *anfd = anfds + fd;
675	ev_io *w;	758	ev_io *w;
676		759
…		…
688	{	771	{
689	if (fd >= 0 && fd < anfdmax)	772	if (fd >= 0 && fd < anfdmax)
690	fd_event (EV_A_ fd, revents);	773	fd_event (EV_A_ fd, revents);
691	}	774	}
692		775
693	void inline_size	776	/* make sure the external fd watch events are in-sync */
		777	/* with the kernel/libev internal state */
		778	inline_size void
694	fd_reify (EV_P)	779	fd_reify (EV_P)
695	{	780	{
696	int i;	781	int i;
697		782
698	for (i = 0; i < fdchangecnt; ++i)	783	for (i = 0; i < fdchangecnt; ++i)
…		…
707	events |= (unsigned char)w->events;	792	events |= (unsigned char)w->events;
708		793
709	#if EV_SELECT_IS_WINSOCKET	794	#if EV_SELECT_IS_WINSOCKET
710	if (events)	795	if (events)
711	{	796	{
712	unsigned long argp;	797	unsigned long arg;
713	#ifdef EV_FD_TO_WIN32_HANDLE	798	#ifdef EV_FD_TO_WIN32_HANDLE
714	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	799	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
715	#else	800	#else
716	anfd->handle = _get_osfhandle (fd);	801	anfd->handle = _get_osfhandle (fd);
717	#endif	802	#endif
718	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	803	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
719	}	804	}
720	#endif	805	#endif
721		806
722	{	807	{
723	unsigned char o_events = anfd->events;	808	unsigned char o_events = anfd->events;
724	unsigned char o_reify = anfd->reify;	809	unsigned char o_reify = anfd->reify;
725		810
726	anfd->reify = 0;	811	anfd->reify = 0;
727	anfd->events = events;	812	anfd->events = events;
728		813
729	if (o_events != events || o_reify & EV_IOFDSET)	814	if (o_events != events || o_reify & EV__IOFDSET)
730	backend_modify (EV_A_ fd, o_events, events);	815	backend_modify (EV_A_ fd, o_events, events);
731	}	816	}
732	}	817	}
733		818
734	fdchangecnt = 0;	819	fdchangecnt = 0;
735	}	820	}
736		821
737	void inline_size	822	/* something about the given fd changed */
		823	inline_size void
738	fd_change (EV_P_ int fd, int flags)	824	fd_change (EV_P_ int fd, int flags)
739	{	825	{
740	unsigned char reify = anfds [fd].reify;	826	unsigned char reify = anfds [fd].reify;
741	anfds [fd].reify |= flags;	827	anfds [fd].reify |= flags;
742		828
…		…
746	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	832	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
747	fdchanges [fdchangecnt - 1] = fd;	833	fdchanges [fdchangecnt - 1] = fd;
748	}	834	}
749	}	835	}
750		836
751	void inline_speed	837	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		838	inline_speed void
752	fd_kill (EV_P_ int fd)	839	fd_kill (EV_P_ int fd)
753	{	840	{
754	ev_io *w;	841	ev_io *w;
755		842
756	while ((w = (ev_io *)anfds [fd].head))	843	while ((w = (ev_io *)anfds [fd].head))
…		…
758	ev_io_stop (EV_A_ w);	845	ev_io_stop (EV_A_ w);
759	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	846	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
760	}	847	}
761	}	848	}
762		849
763	int inline_size	850	/* check whether the given fd is atcually valid, for error recovery */
		851	inline_size int
764	fd_valid (int fd)	852	fd_valid (int fd)
765	{	853	{
766	#ifdef _WIN32	854	#ifdef _WIN32
767	return _get_osfhandle (fd) != -1;	855	return _get_osfhandle (fd) != -1;
768	#else	856	#else
…		…
776	{	864	{
777	int fd;	865	int fd;
778		866
779	for (fd = 0; fd < anfdmax; ++fd)	867	for (fd = 0; fd < anfdmax; ++fd)
780	if (anfds [fd].events)	868	if (anfds [fd].events)
781	if (!fd_valid (fd) == -1 && errno == EBADF)	869	if (!fd_valid (fd) && errno == EBADF)
782	fd_kill (EV_A_ fd);	870	fd_kill (EV_A_ fd);
783	}	871	}
784		872
785	/* called on ENOMEM in select/poll to kill some fds and retry */	873	/* called on ENOMEM in select/poll to kill some fds and retry */
786	static void noinline	874	static void noinline
…		…
804		892
805	for (fd = 0; fd < anfdmax; ++fd)	893	for (fd = 0; fd < anfdmax; ++fd)
806	if (anfds [fd].events)	894	if (anfds [fd].events)
807	{	895	{
808	anfds [fd].events = 0;	896	anfds [fd].events = 0;
		897	anfds [fd].emask = 0;
809	fd_change (EV_A_ fd, EV_IOFDSET | 1);	898	fd_change (EV_A_ fd, EV__IOFDSET | 1);
810	}	899	}
811	}	900	}
812		901
813	/*****************************************************************************/	902	/*****************************************************************************/
814		903
…		…
830	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	919	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
831	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)	920	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
832	#define UPHEAP_DONE(p,k) ((p) == (k))	921	#define UPHEAP_DONE(p,k) ((p) == (k))
833		922
834	/* away from the root */	923	/* away from the root */
835	void inline_speed	924	inline_speed void
836	downheap (ANHE *heap, int N, int k)	925	downheap (ANHE *heap, int N, int k)
837	{	926	{
838	ANHE he = heap [k];	927	ANHE he = heap [k];
839	ANHE *E = heap + N + HEAP0;	928	ANHE *E = heap + N + HEAP0;
840		929
…		…
880	#define HEAP0 1	969	#define HEAP0 1
881	#define HPARENT(k) ((k) >> 1)	970	#define HPARENT(k) ((k) >> 1)
882	#define UPHEAP_DONE(p,k) (!(p))	971	#define UPHEAP_DONE(p,k) (!(p))
883		972
884	/* away from the root */	973	/* away from the root */
885	void inline_speed	974	inline_speed void
886	downheap (ANHE *heap, int N, int k)	975	downheap (ANHE *heap, int N, int k)
887	{	976	{
888	ANHE he = heap [k];	977	ANHE he = heap [k];
889		978
890	for (;;)	979	for (;;)
…		…
910	ev_active (ANHE_w (he)) = k;	999	ev_active (ANHE_w (he)) = k;
911	}	1000	}
912	#endif	1001	#endif
913		1002
914	/* towards the root */	1003	/* towards the root */
915	void inline_speed	1004	inline_speed void
916	upheap (ANHE *heap, int k)	1005	upheap (ANHE *heap, int k)
917	{	1006	{
918	ANHE he = heap [k];	1007	ANHE he = heap [k];
919		1008
920	for (;;)	1009	for (;;)
…		…
931		1020
932	heap [k] = he;	1021	heap [k] = he;
933	ev_active (ANHE_w (he)) = k;	1022	ev_active (ANHE_w (he)) = k;
934	}	1023	}
935		1024
936	void inline_size	1025	/* move an element suitably so it is in a correct place */
		1026	inline_size void
937	adjustheap (ANHE *heap, int N, int k)	1027	adjustheap (ANHE *heap, int N, int k)
938	{	1028	{
939	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1029	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
940	upheap (heap, k);	1030	upheap (heap, k);
941	else	1031	else
942	downheap (heap, N, k);	1032	downheap (heap, N, k);
943	}	1033	}
944		1034
945	/* rebuild the heap: this function is used only once and executed rarely */	1035	/* rebuild the heap: this function is used only once and executed rarely */
946	void inline_size	1036	inline_size void
947	reheap (ANHE *heap, int N)	1037	reheap (ANHE *heap, int N)
948	{	1038	{
949	int i;	1039	int i;
950		1040
951	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */	1041	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
…		…
954	upheap (heap, i + HEAP0);	1044	upheap (heap, i + HEAP0);
955	}	1045	}
956		1046
957	/*****************************************************************************/	1047	/*****************************************************************************/
958		1048
		1049	/* associate signal watchers to a signal signal */
959	typedef struct	1050	typedef struct
960	{	1051	{
961	WL head;	1052	WL head;
962	EV_ATOMIC_T gotsig;	1053	EV_ATOMIC_T gotsig;
963	} ANSIG;	1054	} ANSIG;
…		…
965	static ANSIG *signals;	1056	static ANSIG *signals;
966	static int signalmax;	1057	static int signalmax;
967		1058
968	static EV_ATOMIC_T gotsig;	1059	static EV_ATOMIC_T gotsig;
969		1060
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	/*****************************************************************************/	1061	/*****************************************************************************/
983		1062
984	void inline_speed	1063	/* used to prepare libev internal fd's */
		1064	/* this is not fork-safe */
		1065	inline_speed void
985	fd_intern (int fd)	1066	fd_intern (int fd)
986	{	1067	{
987	#ifdef _WIN32	1068	#ifdef _WIN32
988	int arg = 1;	1069	unsigned long arg = 1;
989	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1070	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
990	#else	1071	#else
991	fcntl (fd, F_SETFD, FD_CLOEXEC);	1072	fcntl (fd, F_SETFD, FD_CLOEXEC);
992	fcntl (fd, F_SETFL, O_NONBLOCK);	1073	fcntl (fd, F_SETFL, O_NONBLOCK);
993	#endif	1074	#endif
994	}	1075	}
995		1076
996	static void noinline	1077	static void noinline
997	evpipe_init (EV_P)	1078	evpipe_init (EV_P)
998	{	1079	{
999	if (!ev_is_active (&pipeev))	1080	if (!ev_is_active (&pipe_w))
1000	{	1081	{
1001	#if EV_USE_EVENTFD	1082	#if EV_USE_EVENTFD
1002	if ((evfd = eventfd (0, 0)) >= 0)	1083	if ((evfd = eventfd (0, 0)) >= 0)
1003	{	1084	{
1004	evpipe [0] = -1;	1085	evpipe [0] = -1;
1005	fd_intern (evfd);	1086	fd_intern (evfd);
1006	ev_io_set (&pipeev, evfd, EV_READ);	1087	ev_io_set (&pipe_w, evfd, EV_READ);
1007	}	1088	}
1008	else	1089	else
1009	#endif	1090	#endif
1010	{	1091	{
1011	while (pipe (evpipe))	1092	while (pipe (evpipe))
1012	syserr ("(libev) error creating signal/async pipe");	1093	ev_syserr ("(libev) error creating signal/async pipe");
1013		1094
1014	fd_intern (evpipe [0]);	1095	fd_intern (evpipe [0]);
1015	fd_intern (evpipe [1]);	1096	fd_intern (evpipe [1]);
1016	ev_io_set (&pipeev, evpipe [0], EV_READ);	1097	ev_io_set (&pipe_w, evpipe [0], EV_READ);
1017	}	1098	}
1018		1099
1019	ev_io_start (EV_A_ &pipeev);	1100	ev_io_start (EV_A_ &pipe_w);
1020	ev_unref (EV_A); /* watcher should not keep loop alive */	1101	ev_unref (EV_A); /* watcher should not keep loop alive */
1021	}	1102	}
1022	}	1103	}
1023		1104
1024	void inline_size	1105	inline_size void
1025	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1106	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1026	{	1107	{
1027	if (!*flag)	1108	if (!*flag)
1028	{	1109	{
1029	int old_errno = errno; /* save errno because write might clobber it */	1110	int old_errno = errno; /* save errno because write might clobber it */
…		…
1042		1123
1043	errno = old_errno;	1124	errno = old_errno;
1044	}	1125	}
1045	}	1126	}
1046		1127
		1128	/* called whenever the libev signal pipe */
		1129	/* got some events (signal, async) */
1047	static void	1130	static void
1048	pipecb (EV_P_ ev_io *iow, int revents)	1131	pipecb (EV_P_ ev_io *iow, int revents)
1049	{	1132	{
1050	#if EV_USE_EVENTFD	1133	#if EV_USE_EVENTFD
1051	if (evfd >= 0)	1134	if (evfd >= 0)
…		…
1107	ev_feed_signal_event (EV_P_ int signum)	1190	ev_feed_signal_event (EV_P_ int signum)
1108	{	1191	{
1109	WL w;	1192	WL w;
1110		1193
1111	#if EV_MULTIPLICITY	1194	#if EV_MULTIPLICITY
1112	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1195	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1113	#endif	1196	#endif
1114		1197
1115	--signum;	1198	--signum;
1116		1199
1117	if (signum < 0 || signum >= signalmax)	1200	if (signum < 0 || signum >= signalmax)
…		…
1133		1216
1134	#ifndef WIFCONTINUED	1217	#ifndef WIFCONTINUED
1135	# define WIFCONTINUED(status) 0	1218	# define WIFCONTINUED(status) 0
1136	#endif	1219	#endif
1137		1220
1138	void inline_speed	1221	/* handle a single child status event */
		1222	inline_speed void
1139	child_reap (EV_P_ int chain, int pid, int status)	1223	child_reap (EV_P_ int chain, int pid, int status)
1140	{	1224	{
1141	ev_child *w;	1225	ev_child *w;
1142	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1226	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1143		1227
…		…
1156		1240
1157	#ifndef WCONTINUED	1241	#ifndef WCONTINUED
1158	# define WCONTINUED 0	1242	# define WCONTINUED 0
1159	#endif	1243	#endif
1160		1244
		1245	/* called on sigchld etc., calls waitpid */
1161	static void	1246	static void
1162	childcb (EV_P_ ev_signal *sw, int revents)	1247	childcb (EV_P_ ev_signal *sw, int revents)
1163	{	1248	{
1164	int pid, status;	1249	int pid, status;
1165		1250
…		…
1246	/* kqueue is borked on everything but netbsd apparently */	1331	/* kqueue is borked on everything but netbsd apparently */
1247	/* it usually doesn't work correctly on anything but sockets and pipes */	1332	/* it usually doesn't work correctly on anything but sockets and pipes */
1248	flags &= ~EVBACKEND_KQUEUE;	1333	flags &= ~EVBACKEND_KQUEUE;
1249	#endif	1334	#endif
1250	#ifdef __APPLE__	1335	#ifdef __APPLE__
1251	// flags &= ~EVBACKEND_KQUEUE; for documentation	1336	/* only select works correctly on that "unix-certified" platform */
1252	flags &= ~EVBACKEND_POLL;	1337	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1338	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1253	#endif	1339	#endif
1254		1340
1255	return flags;	1341	return flags;
1256	}	1342	}
1257		1343
…		…
1277	ev_loop_count (EV_P)	1363	ev_loop_count (EV_P)
1278	{	1364	{
1279	return loop_count;	1365	return loop_count;
1280	}	1366	}
1281		1367
		1368	unsigned int
		1369	ev_loop_depth (EV_P)
		1370	{
		1371	return loop_depth;
		1372	}
		1373
1282	void	1374	void
1283	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1375	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1284	{	1376	{
1285	io_blocktime = interval;	1377	io_blocktime = interval;
1286	}	1378	}
…		…
1289	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1381	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1290	{	1382	{
1291	timeout_blocktime = interval;	1383	timeout_blocktime = interval;
1292	}	1384	}
1293		1385
		1386	/* initialise a loop structure, must be zero-initialised */
1294	static void noinline	1387	static void noinline
1295	loop_init (EV_P_ unsigned int flags)	1388	loop_init (EV_P_ unsigned int flags)
1296	{	1389	{
1297	if (!backend)	1390	if (!backend)
1298	{	1391	{
		1392	#if EV_USE_REALTIME
		1393	if (!have_realtime)
		1394	{
		1395	struct timespec ts;
		1396
		1397	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1398	have_realtime = 1;
		1399	}
		1400	#endif
		1401
1299	#if EV_USE_MONOTONIC	1402	#if EV_USE_MONOTONIC
		1403	if (!have_monotonic)
1300	{	1404	{
1301	struct timespec ts;	1405	struct timespec ts;
		1406
1302	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1407	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1303	have_monotonic = 1;	1408	have_monotonic = 1;
1304	}	1409	}
1305	#endif	1410	#endif
1306		1411
1307	ev_rt_now = ev_time ();	1412	ev_rt_now = ev_time ();
1308	mn_now = get_clock ();	1413	mn_now = get_clock ();
1309	now_floor = mn_now;	1414	now_floor = mn_now;
1310	rtmn_diff = ev_rt_now - mn_now;	1415	rtmn_diff = ev_rt_now - mn_now;
		1416	invoke_cb = ev_invoke_pending;
1311		1417
1312	io_blocktime = 0.;	1418	io_blocktime = 0.;
1313	timeout_blocktime = 0.;	1419	timeout_blocktime = 0.;
1314	backend = 0;	1420	backend = 0;
1315	backend_fd = -1;	1421	backend_fd = -1;
…		…
1346	#endif	1452	#endif
1347	#if EV_USE_SELECT	1453	#if EV_USE_SELECT
1348	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1454	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1349	#endif	1455	#endif
1350		1456
		1457	ev_prepare_init (&pending_w, pendingcb);
		1458
1351	ev_init (&pipeev, pipecb);	1459	ev_init (&pipe_w, pipecb);
1352	ev_set_priority (&pipeev, EV_MAXPRI);	1460	ev_set_priority (&pipe_w, EV_MAXPRI);
1353	}	1461	}
1354	}	1462	}
1355		1463
		1464	/* free up a loop structure */
1356	static void noinline	1465	static void noinline
1357	loop_destroy (EV_P)	1466	loop_destroy (EV_P)
1358	{	1467	{
1359	int i;	1468	int i;
1360		1469
1361	if (ev_is_active (&pipeev))	1470	if (ev_is_active (&pipe_w))
1362	{	1471	{
1363	ev_ref (EV_A); /* signal watcher */	1472	ev_ref (EV_A); /* signal watcher */
1364	ev_io_stop (EV_A_ &pipeev);	1473	ev_io_stop (EV_A_ &pipe_w);
1365		1474
1366	#if EV_USE_EVENTFD	1475	#if EV_USE_EVENTFD
1367	if (evfd >= 0)	1476	if (evfd >= 0)
1368	close (evfd);	1477	close (evfd);
1369	#endif	1478	#endif
…		…
1408	}	1517	}
1409		1518
1410	ev_free (anfds); anfdmax = 0;	1519	ev_free (anfds); anfdmax = 0;
1411		1520
1412	/* have to use the microsoft-never-gets-it-right macro */	1521	/* have to use the microsoft-never-gets-it-right macro */
		1522	array_free (rfeed, EMPTY);
1413	array_free (fdchange, EMPTY);	1523	array_free (fdchange, EMPTY);
1414	array_free (timer, EMPTY);	1524	array_free (timer, EMPTY);
1415	#if EV_PERIODIC_ENABLE	1525	#if EV_PERIODIC_ENABLE
1416	array_free (periodic, EMPTY);	1526	array_free (periodic, EMPTY);
1417	#endif	1527	#endif
…		…
1426		1536
1427	backend = 0;	1537	backend = 0;
1428	}	1538	}
1429		1539
1430	#if EV_USE_INOTIFY	1540	#if EV_USE_INOTIFY
1431	void inline_size infy_fork (EV_P);	1541	inline_size void infy_fork (EV_P);
1432	#endif	1542	#endif
1433		1543
1434	void inline_size	1544	inline_size void
1435	loop_fork (EV_P)	1545	loop_fork (EV_P)
1436	{	1546	{
1437	#if EV_USE_PORT	1547	#if EV_USE_PORT
1438	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1548	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1439	#endif	1549	#endif
…		…
1445	#endif	1555	#endif
1446	#if EV_USE_INOTIFY	1556	#if EV_USE_INOTIFY
1447	infy_fork (EV_A);	1557	infy_fork (EV_A);
1448	#endif	1558	#endif
1449		1559
1450	if (ev_is_active (&pipeev))	1560	if (ev_is_active (&pipe_w))
1451	{	1561	{
1452	/* this "locks" the handlers against writing to the pipe */	1562	/* this "locks" the handlers against writing to the pipe */
1453	/* while we modify the fd vars */	1563	/* while we modify the fd vars */
1454	gotsig = 1;	1564	gotsig = 1;
1455	#if EV_ASYNC_ENABLE	1565	#if EV_ASYNC_ENABLE
1456	gotasync = 1;	1566	gotasync = 1;
1457	#endif	1567	#endif
1458		1568
1459	ev_ref (EV_A);	1569	ev_ref (EV_A);
1460	ev_io_stop (EV_A_ &pipeev);	1570	ev_io_stop (EV_A_ &pipe_w);
1461		1571
1462	#if EV_USE_EVENTFD	1572	#if EV_USE_EVENTFD
1463	if (evfd >= 0)	1573	if (evfd >= 0)
1464	close (evfd);	1574	close (evfd);
1465	#endif	1575	#endif
…		…
1470	close (evpipe [1]);	1580	close (evpipe [1]);
1471	}	1581	}
1472		1582
1473	evpipe_init (EV_A);	1583	evpipe_init (EV_A);
1474	/* now iterate over everything, in case we missed something */	1584	/* now iterate over everything, in case we missed something */
1475	pipecb (EV_A_ &pipeev, EV_READ);	1585	pipecb (EV_A_ &pipe_w, EV_READ);
1476	}	1586	}
1477		1587
1478	postfork = 0;	1588	postfork = 0;
1479	}	1589	}
1480		1590
…		…
1507	{	1617	{
1508	postfork = 1; /* must be in line with ev_default_fork */	1618	postfork = 1; /* must be in line with ev_default_fork */
1509	}	1619	}
1510		1620
1511	#if EV_VERIFY	1621	#if EV_VERIFY
1512	void noinline	1622	static void noinline
1513	verify_watcher (EV_P_ W w)	1623	verify_watcher (EV_P_ W w)
1514	{	1624	{
1515	assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));	1625	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1516		1626
1517	if (w->pending)	1627	if (w->pending)
1518	assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));	1628	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1519	}	1629	}
1520		1630
1521	static void noinline	1631	static void noinline
1522	verify_heap (EV_P_ ANHE *heap, int N)	1632	verify_heap (EV_P_ ANHE *heap, int N)
1523	{	1633	{
1524	int i;	1634	int i;
1525		1635
1526	for (i = HEAP0; i < N + HEAP0; ++i)	1636	for (i = HEAP0; i < N + HEAP0; ++i)
1527	{	1637	{
1528	assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));	1638	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])));	1639	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]))));	1640	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1531		1641
1532	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));	1642	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1533	}	1643	}
1534	}	1644	}
1535		1645
1536	static void noinline	1646	static void noinline
1537	array_verify (EV_P_ W *ws, int cnt)	1647	array_verify (EV_P_ W *ws, int cnt)
1538	{	1648	{
1539	while (cnt--)	1649	while (cnt--)
1540	{	1650	{
1541	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));	1651	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1542	verify_watcher (EV_A_ ws [cnt]);	1652	verify_watcher (EV_A_ ws [cnt]);
1543	}	1653	}
1544	}	1654	}
1545	#endif	1655	#endif
1546		1656
…		…
1553		1663
1554	assert (activecnt >= -1);	1664	assert (activecnt >= -1);
1555		1665
1556	assert (fdchangemax >= fdchangecnt);	1666	assert (fdchangemax >= fdchangecnt);
1557	for (i = 0; i < fdchangecnt; ++i)	1667	for (i = 0; i < fdchangecnt; ++i)
1558	assert (("negative fd in fdchanges", fdchanges [i] >= 0));	1668	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1559		1669
1560	assert (anfdmax >= 0);	1670	assert (anfdmax >= 0);
1561	for (i = 0; i < anfdmax; ++i)	1671	for (i = 0; i < anfdmax; ++i)
1562	for (w = anfds [i].head; w; w = w->next)	1672	for (w = anfds [i].head; w; w = w->next)
1563	{	1673	{
1564	verify_watcher (EV_A_ (W)w);	1674	verify_watcher (EV_A_ (W)w);
1565	assert (("inactive fd watcher on anfd list", ev_active (w) == 1));	1675	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));	1676	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1567	}	1677	}
1568		1678
1569	assert (timermax >= timercnt);	1679	assert (timermax >= timercnt);
1570	verify_heap (EV_A_ timers, timercnt);	1680	verify_heap (EV_A_ timers, timercnt);
1571		1681
…		…
1648	{	1758	{
1649	#if EV_MULTIPLICITY	1759	#if EV_MULTIPLICITY
1650	struct ev_loop *loop = ev_default_loop_ptr;	1760	struct ev_loop *loop = ev_default_loop_ptr;
1651	#endif	1761	#endif
1652		1762
		1763	ev_default_loop_ptr = 0;
		1764
1653	#ifndef _WIN32	1765	#ifndef _WIN32
1654	ev_ref (EV_A); /* child watcher */	1766	ev_ref (EV_A); /* child watcher */
1655	ev_signal_stop (EV_A_ &childev);	1767	ev_signal_stop (EV_A_ &childev);
1656	#endif	1768	#endif
1657		1769
…		…
1663	{	1775	{
1664	#if EV_MULTIPLICITY	1776	#if EV_MULTIPLICITY
1665	struct ev_loop *loop = ev_default_loop_ptr;	1777	struct ev_loop *loop = ev_default_loop_ptr;
1666	#endif	1778	#endif
1667		1779
1668	if (backend)
1669	postfork = 1; /* must be in line with ev_loop_fork */	1780	postfork = 1; /* must be in line with ev_loop_fork */
1670	}	1781	}
1671		1782
1672	/*****************************************************************************/	1783	/*****************************************************************************/
1673		1784
1674	void	1785	void
1675	ev_invoke (EV_P_ void *w, int revents)	1786	ev_invoke (EV_P_ void *w, int revents)
1676	{	1787	{
1677	EV_CB_INVOKE ((W)w, revents);	1788	EV_CB_INVOKE ((W)w, revents);
1678	}	1789	}
1679		1790
1680	void inline_speed	1791	void
1681	call_pending (EV_P)	1792	ev_invoke_pending (EV_P)
1682	{	1793	{
1683	int pri;	1794	int pri;
1684		1795
1685	for (pri = NUMPRI; pri--; )	1796	for (pri = NUMPRI; pri--; )
1686	while (pendingcnt [pri])	1797	while (pendingcnt [pri])
1687	{	1798	{
1688	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1799	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1689		1800
1690	if (expect_true (p->w))
1691	{
1692	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1801	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1802	/* ^ this is no longer true, as pending_w could be here */
1693		1803
1694	p->w->pending = 0;	1804	p->w->pending = 0;
1695	EV_CB_INVOKE (p->w, p->events);	1805	EV_CB_INVOKE (p->w, p->events);
1696	EV_FREQUENT_CHECK;	1806	EV_FREQUENT_CHECK;
1697	}
1698	}	1807	}
1699	}	1808	}
1700		1809
1701	#if EV_IDLE_ENABLE	1810	#if EV_IDLE_ENABLE
1702	void inline_size	1811	/* make idle watchers pending. this handles the "call-idle */
		1812	/* only when higher priorities are idle" logic */
		1813	inline_size void
1703	idle_reify (EV_P)	1814	idle_reify (EV_P)
1704	{	1815	{
1705	if (expect_false (idleall))	1816	if (expect_false (idleall))
1706	{	1817	{
1707	int pri;	1818	int pri;
…		…
1719	}	1830	}
1720	}	1831	}
1721	}	1832	}
1722	#endif	1833	#endif
1723		1834
1724	void inline_size	1835	/* make timers pending */
		1836	inline_size void
1725	timers_reify (EV_P)	1837	timers_reify (EV_P)
1726	{	1838	{
1727	EV_FREQUENT_CHECK;	1839	EV_FREQUENT_CHECK;
1728		1840
1729	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	1841	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1730	{	1842	{
1731	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	1843	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	{	1844	{
		1845	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1846
		1847	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		1848
		1849	/* first reschedule or stop timer */
		1850	if (w->repeat)
		1851	{
1738	ev_at (w) += w->repeat;	1852	ev_at (w) += w->repeat;
1739	if (ev_at (w) < mn_now)	1853	if (ev_at (w) < mn_now)
1740	ev_at (w) = mn_now;	1854	ev_at (w) = mn_now;
1741		1855
1742	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1856	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1743		1857
1744	ANHE_at_cache (timers [HEAP0]);	1858	ANHE_at_cache (timers [HEAP0]);
1745	downheap (timers, timercnt, HEAP0);	1859	downheap (timers, timercnt, HEAP0);
		1860	}
		1861	else
		1862	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1863
		1864	EV_FREQUENT_CHECK;
		1865	feed_reverse (EV_A_ (W)w);
1746	}	1866	}
1747	else	1867	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1748	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1749		1868
1750	EV_FREQUENT_CHECK;
1751	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1869	feed_reverse_done (EV_A_ EV_TIMEOUT);
1752	}	1870	}
1753	}	1871	}
1754		1872
1755	#if EV_PERIODIC_ENABLE	1873	#if EV_PERIODIC_ENABLE
1756	void inline_size	1874	/* make periodics pending */
		1875	inline_size void
1757	periodics_reify (EV_P)	1876	periodics_reify (EV_P)
1758	{	1877	{
1759	EV_FREQUENT_CHECK;	1878	EV_FREQUENT_CHECK;
1760		1879
1761	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	1880	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1762	{	1881	{
1763	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	1882	int feed_count = 0;
1764		1883
1765	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	1884	do
1766
1767	/* first reschedule or stop timer */
1768	if (w->reschedule_cb)
1769	{	1885	{
		1886	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1887
		1888	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		1889
		1890	/* first reschedule or stop timer */
		1891	if (w->reschedule_cb)
		1892	{
1770	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1893	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1771		1894
1772	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));	1895	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1773		1896
1774	ANHE_at_cache (periodics [HEAP0]);	1897	ANHE_at_cache (periodics [HEAP0]);
1775	downheap (periodics, periodiccnt, HEAP0);	1898	downheap (periodics, periodiccnt, HEAP0);
		1899	}
		1900	else if (w->interval)
		1901	{
		1902	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1903	/* if next trigger time is not sufficiently in the future, put it there */
		1904	/* this might happen because of floating point inexactness */
		1905	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1906	{
		1907	ev_at (w) += w->interval;
		1908
		1909	/* if interval is unreasonably low we might still have a time in the past */
		1910	/* so correct this. this will make the periodic very inexact, but the user */
		1911	/* has effectively asked to get triggered more often than possible */
		1912	if (ev_at (w) < ev_rt_now)
		1913	ev_at (w) = ev_rt_now;
		1914	}
		1915
		1916	ANHE_at_cache (periodics [HEAP0]);
		1917	downheap (periodics, periodiccnt, HEAP0);
		1918	}
		1919	else
		1920	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1921
		1922	EV_FREQUENT_CHECK;
		1923	feed_reverse (EV_A_ (W)w);
1776	}	1924	}
1777	else if (w->interval)	1925	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		1926
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);	1927	feed_reverse_done (EV_A_ EV_PERIODIC);
1801	}	1928	}
1802	}	1929	}
1803		1930
		1931	/* simply recalculate all periodics */
		1932	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1804	static void noinline	1933	static void noinline
1805	periodics_reschedule (EV_P)	1934	periodics_reschedule (EV_P)
1806	{	1935	{
1807	int i;	1936	int i;
1808		1937
…		…
1821		1950
1822	reheap (periodics, periodiccnt);	1951	reheap (periodics, periodiccnt);
1823	}	1952	}
1824	#endif	1953	#endif
1825		1954
1826	void inline_speed	1955	/* adjust all timers by a given offset */
		1956	static void noinline
		1957	timers_reschedule (EV_P_ ev_tstamp adjust)
		1958	{
		1959	int i;
		1960
		1961	for (i = 0; i < timercnt; ++i)
		1962	{
		1963	ANHE *he = timers + i + HEAP0;
		1964	ANHE_w (*he)->at += adjust;
		1965	ANHE_at_cache (*he);
		1966	}
		1967	}
		1968
		1969	/* fetch new monotonic and realtime times from the kernel */
		1970	/* also detetc if there was a timejump, and act accordingly */
		1971	inline_speed void
1827	time_update (EV_P_ ev_tstamp max_block)	1972	time_update (EV_P_ ev_tstamp max_block)
1828	{	1973	{
1829	int i;
1830
1831	#if EV_USE_MONOTONIC	1974	#if EV_USE_MONOTONIC
1832	if (expect_true (have_monotonic))	1975	if (expect_true (have_monotonic))
1833	{	1976	{
		1977	int i;
1834	ev_tstamp odiff = rtmn_diff;	1978	ev_tstamp odiff = rtmn_diff;
1835		1979
1836	mn_now = get_clock ();	1980	mn_now = get_clock ();
1837		1981
1838	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	1982	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1864	ev_rt_now = ev_time ();	2008	ev_rt_now = ev_time ();
1865	mn_now = get_clock ();	2009	mn_now = get_clock ();
1866	now_floor = mn_now;	2010	now_floor = mn_now;
1867	}	2011	}
1868		2012
		2013	/* no timer adjustment, as the monotonic clock doesn't jump */
		2014	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1869	# if EV_PERIODIC_ENABLE	2015	# if EV_PERIODIC_ENABLE
1870	periodics_reschedule (EV_A);	2016	periodics_reschedule (EV_A);
1871	# endif	2017	# endif
1872	/* no timer adjustment, as the monotonic clock doesn't jump */
1873	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1874	}	2018	}
1875	else	2019	else
1876	#endif	2020	#endif
1877	{	2021	{
1878	ev_rt_now = ev_time ();	2022	ev_rt_now = ev_time ();
1879		2023
1880	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2024	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1881	{	2025	{
		2026	/* adjust timers. this is easy, as the offset is the same for all of them */
		2027	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1882	#if EV_PERIODIC_ENABLE	2028	#if EV_PERIODIC_ENABLE
1883	periodics_reschedule (EV_A);	2029	periodics_reschedule (EV_A);
1884	#endif	2030	#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	}	2031	}
1893		2032
1894	mn_now = ev_rt_now;	2033	mn_now = ev_rt_now;
1895	}	2034	}
1896	}	2035	}
1897		2036
1898	void	2037	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)	2038	ev_loop (EV_P_ int flags)
1914	{	2039	{
		2040	++loop_depth;
		2041
1915	loop_done = EVUNLOOP_CANCEL;	2042	loop_done = EVUNLOOP_CANCEL;
1916		2043
1917	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2044	invoke_cb (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1918		2045
1919	do	2046	do
1920	{	2047	{
1921	#if EV_VERIFY >= 2	2048	#if EV_VERIFY >= 2
1922	ev_loop_verify (EV_A);	2049	ev_loop_verify (EV_A);
…		…
1935	/* we might have forked, so queue fork handlers */	2062	/* we might have forked, so queue fork handlers */
1936	if (expect_false (postfork))	2063	if (expect_false (postfork))
1937	if (forkcnt)	2064	if (forkcnt)
1938	{	2065	{
1939	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2066	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1940	call_pending (EV_A);	2067	invoke_cb (EV_A);
1941	}	2068	}
1942	#endif	2069	#endif
1943		2070
1944	/* queue prepare watchers (and execute them) */	2071	/* queue prepare watchers (and execute them) */
1945	if (expect_false (preparecnt))	2072	if (expect_false (preparecnt))
1946	{	2073	{
1947	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2074	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1948	call_pending (EV_A);	2075	invoke_cb (EV_A);
1949	}	2076	}
1950
1951	if (expect_false (!activecnt))
1952	break;
1953		2077
1954	/* we might have forked, so reify kernel state if necessary */	2078	/* we might have forked, so reify kernel state if necessary */
1955	if (expect_false (postfork))	2079	if (expect_false (postfork))
1956	loop_fork (EV_A);	2080	loop_fork (EV_A);
1957		2081
…		…
1963	ev_tstamp waittime = 0.;	2087	ev_tstamp waittime = 0.;
1964	ev_tstamp sleeptime = 0.;	2088	ev_tstamp sleeptime = 0.;
1965		2089
1966	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2090	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1967	{	2091	{
		2092	/* remember old timestamp for io_blocktime calculation */
		2093	ev_tstamp prev_mn_now = mn_now;
		2094
1968	/* update time to cancel out callback processing overhead */	2095	/* update time to cancel out callback processing overhead */
1969	time_update (EV_A_ 1e100);	2096	time_update (EV_A_ 1e100);
1970		2097
1971	waittime = MAX_BLOCKTIME;	2098	waittime = MAX_BLOCKTIME;
1972		2099
…		…
1982	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2109	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1983	if (waittime > to) waittime = to;	2110	if (waittime > to) waittime = to;
1984	}	2111	}
1985	#endif	2112	#endif
1986		2113
		2114	/* don't let timeouts decrease the waittime below timeout_blocktime */
1987	if (expect_false (waittime < timeout_blocktime))	2115	if (expect_false (waittime < timeout_blocktime))
1988	waittime = timeout_blocktime;	2116	waittime = timeout_blocktime;
1989		2117
1990	sleeptime = waittime - backend_fudge;	2118	/* extra check because io_blocktime is commonly 0 */
1991
1992	if (expect_true (sleeptime > io_blocktime))	2119	if (expect_false (io_blocktime))
1993	sleeptime = io_blocktime;
1994
1995	if (sleeptime)
1996	{	2120	{
		2121	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2122
		2123	if (sleeptime > waittime - backend_fudge)
		2124	sleeptime = waittime - backend_fudge;
		2125
		2126	if (expect_true (sleeptime > 0.))
		2127	{
1997	ev_sleep (sleeptime);	2128	ev_sleep (sleeptime);
1998	waittime -= sleeptime;	2129	waittime -= sleeptime;
		2130	}
1999	}	2131	}
2000	}	2132	}
2001		2133
2002	++loop_count;	2134	++loop_count;
2003	backend_poll (EV_A_ waittime);	2135	backend_poll (EV_A_ waittime);
…		…
2019		2151
2020	/* queue check watchers, to be executed first */	2152	/* queue check watchers, to be executed first */
2021	if (expect_false (checkcnt))	2153	if (expect_false (checkcnt))
2022	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2154	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2023		2155
2024	call_pending (EV_A);	2156	invoke_cb (EV_A);
2025	}	2157	}
2026	while (expect_true (	2158	while (expect_true (
2027	activecnt	2159	activecnt
2028	&& !loop_done	2160	&& !loop_done
2029	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2161	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2030	));	2162	));
2031		2163
2032	if (loop_done == EVUNLOOP_ONE)	2164	if (loop_done == EVUNLOOP_ONE)
2033	loop_done = EVUNLOOP_CANCEL;	2165	loop_done = EVUNLOOP_CANCEL;
		2166
		2167	--loop_depth;
2034	}	2168	}
2035		2169
2036	void	2170	void
2037	ev_unloop (EV_P_ int how)	2171	ev_unloop (EV_P_ int how)
2038	{	2172	{
2039	loop_done = how;	2173	loop_done = how;
2040	}	2174	}
2041		2175
		2176	void
		2177	ev_ref (EV_P)
		2178	{
		2179	++activecnt;
		2180	}
		2181
		2182	void
		2183	ev_unref (EV_P)
		2184	{
		2185	--activecnt;
		2186	}
		2187
		2188	void
		2189	ev_now_update (EV_P)
		2190	{
		2191	time_update (EV_A_ 1e100);
		2192	}
		2193
		2194	void
		2195	ev_suspend (EV_P)
		2196	{
		2197	ev_now_update (EV_A);
		2198	}
		2199
		2200	void
		2201	ev_resume (EV_P)
		2202	{
		2203	ev_tstamp mn_prev = mn_now;
		2204
		2205	ev_now_update (EV_A);
		2206	timers_reschedule (EV_A_ mn_now - mn_prev);
		2207	#if EV_PERIODIC_ENABLE
		2208	/* TODO: really do this? */
		2209	periodics_reschedule (EV_A);
		2210	#endif
		2211	}
		2212
2042	/*****************************************************************************/	2213	/*****************************************************************************/
		2214	/* singly-linked list management, used when the expected list length is short */
2043		2215
2044	void inline_size	2216	inline_size void
2045	wlist_add (WL *head, WL elem)	2217	wlist_add (WL *head, WL elem)
2046	{	2218	{
2047	elem->next = *head;	2219	elem->next = *head;
2048	*head = elem;	2220	*head = elem;
2049	}	2221	}
2050		2222
2051	void inline_size	2223	inline_size void
2052	wlist_del (WL *head, WL elem)	2224	wlist_del (WL *head, WL elem)
2053	{	2225	{
2054	while (*head)	2226	while (*head)
2055	{	2227	{
2056	if (*head == elem)	2228	if (*head == elem)
…		…
2061		2233
2062	head = &(*head)->next;	2234	head = &(*head)->next;
2063	}	2235	}
2064	}	2236	}
2065		2237
2066	void inline_speed	2238	/* internal, faster, version of ev_clear_pending */
		2239	inline_speed void
2067	clear_pending (EV_P_ W w)	2240	clear_pending (EV_P_ W w)
2068	{	2241	{
2069	if (w->pending)	2242	if (w->pending)
2070	{	2243	{
2071	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2244	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2072	w->pending = 0;	2245	w->pending = 0;
2073	}	2246	}
2074	}	2247	}
2075		2248
2076	int	2249	int
…		…
2080	int pending = w_->pending;	2253	int pending = w_->pending;
2081		2254
2082	if (expect_true (pending))	2255	if (expect_true (pending))
2083	{	2256	{
2084	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2257	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2258	p->w = (W)&pending_w;
2085	w_->pending = 0;	2259	w_->pending = 0;
2086	p->w = 0;
2087	return p->events;	2260	return p->events;
2088	}	2261	}
2089	else	2262	else
2090	return 0;	2263	return 0;
2091	}	2264	}
2092		2265
2093	void inline_size	2266	inline_size void
2094	pri_adjust (EV_P_ W w)	2267	pri_adjust (EV_P_ W w)
2095	{	2268	{
2096	int pri = w->priority;	2269	int pri = ev_priority (w);
2097	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2270	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2098	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2271	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2099	w->priority = pri;	2272	ev_set_priority (w, pri);
2100	}	2273	}
2101		2274
2102	void inline_speed	2275	inline_speed void
2103	ev_start (EV_P_ W w, int active)	2276	ev_start (EV_P_ W w, int active)
2104	{	2277	{
2105	pri_adjust (EV_A_ w);	2278	pri_adjust (EV_A_ w);
2106	w->active = active;	2279	w->active = active;
2107	ev_ref (EV_A);	2280	ev_ref (EV_A);
2108	}	2281	}
2109		2282
2110	void inline_size	2283	inline_size void
2111	ev_stop (EV_P_ W w)	2284	ev_stop (EV_P_ W w)
2112	{	2285	{
2113	ev_unref (EV_A);	2286	ev_unref (EV_A);
2114	w->active = 0;	2287	w->active = 0;
2115	}	2288	}
…		…
2122	int fd = w->fd;	2295	int fd = w->fd;
2123		2296
2124	if (expect_false (ev_is_active (w)))	2297	if (expect_false (ev_is_active (w)))
2125	return;	2298	return;
2126		2299
2127	assert (("ev_io_start called with negative fd", fd >= 0));	2300	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2301	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2128		2302
2129	EV_FREQUENT_CHECK;	2303	EV_FREQUENT_CHECK;
2130		2304
2131	ev_start (EV_A_ (W)w, 1);	2305	ev_start (EV_A_ (W)w, 1);
2132	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2306	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2133	wlist_add (&anfds[fd].head, (WL)w);	2307	wlist_add (&anfds[fd].head, (WL)w);
2134		2308
2135	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2309	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
2136	w->events &= ~EV_IOFDSET;	2310	w->events &= ~EV__IOFDSET;
2137		2311
2138	EV_FREQUENT_CHECK;	2312	EV_FREQUENT_CHECK;
2139	}	2313	}
2140		2314
2141	void noinline	2315	void noinline
…		…
2143	{	2317	{
2144	clear_pending (EV_A_ (W)w);	2318	clear_pending (EV_A_ (W)w);
2145	if (expect_false (!ev_is_active (w)))	2319	if (expect_false (!ev_is_active (w)))
2146	return;	2320	return;
2147		2321
2148	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2322	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2149		2323
2150	EV_FREQUENT_CHECK;	2324	EV_FREQUENT_CHECK;
2151		2325
2152	wlist_del (&anfds[w->fd].head, (WL)w);	2326	wlist_del (&anfds[w->fd].head, (WL)w);
2153	ev_stop (EV_A_ (W)w);	2327	ev_stop (EV_A_ (W)w);
…		…
2163	if (expect_false (ev_is_active (w)))	2337	if (expect_false (ev_is_active (w)))
2164	return;	2338	return;
2165		2339
2166	ev_at (w) += mn_now;	2340	ev_at (w) += mn_now;
2167		2341
2168	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2342	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2169		2343
2170	EV_FREQUENT_CHECK;	2344	EV_FREQUENT_CHECK;
2171		2345
2172	++timercnt;	2346	++timercnt;
2173	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);	2347	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
…		…
2176	ANHE_at_cache (timers [ev_active (w)]);	2350	ANHE_at_cache (timers [ev_active (w)]);
2177	upheap (timers, ev_active (w));	2351	upheap (timers, ev_active (w));
2178		2352
2179	EV_FREQUENT_CHECK;	2353	EV_FREQUENT_CHECK;
2180		2354
2181	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2355	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2182	}	2356	}
2183		2357
2184	void noinline	2358	void noinline
2185	ev_timer_stop (EV_P_ ev_timer *w)	2359	ev_timer_stop (EV_P_ ev_timer *w)
2186	{	2360	{
…		…
2191	EV_FREQUENT_CHECK;	2365	EV_FREQUENT_CHECK;
2192		2366
2193	{	2367	{
2194	int active = ev_active (w);	2368	int active = ev_active (w);
2195		2369
2196	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2370	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2197		2371
2198	--timercnt;	2372	--timercnt;
2199		2373
2200	if (expect_true (active < timercnt + HEAP0))	2374	if (expect_true (active < timercnt + HEAP0))
2201	{	2375	{
…		…
2245		2419
2246	if (w->reschedule_cb)	2420	if (w->reschedule_cb)
2247	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2421	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2248	else if (w->interval)	2422	else if (w->interval)
2249	{	2423	{
2250	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2424	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 */	2425	/* 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;	2426	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2253	}	2427	}
2254	else	2428	else
2255	ev_at (w) = w->offset;	2429	ev_at (w) = w->offset;
…		…
2263	ANHE_at_cache (periodics [ev_active (w)]);	2437	ANHE_at_cache (periodics [ev_active (w)]);
2264	upheap (periodics, ev_active (w));	2438	upheap (periodics, ev_active (w));
2265		2439
2266	EV_FREQUENT_CHECK;	2440	EV_FREQUENT_CHECK;
2267		2441
2268	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2442	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2269	}	2443	}
2270		2444
2271	void noinline	2445	void noinline
2272	ev_periodic_stop (EV_P_ ev_periodic *w)	2446	ev_periodic_stop (EV_P_ ev_periodic *w)
2273	{	2447	{
…		…
2278	EV_FREQUENT_CHECK;	2452	EV_FREQUENT_CHECK;
2279		2453
2280	{	2454	{
2281	int active = ev_active (w);	2455	int active = ev_active (w);
2282		2456
2283	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2457	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2284		2458
2285	--periodiccnt;	2459	--periodiccnt;
2286		2460
2287	if (expect_true (active < periodiccnt + HEAP0))	2461	if (expect_true (active < periodiccnt + HEAP0))
2288	{	2462	{
…		…
2311		2485
2312	void noinline	2486	void noinline
2313	ev_signal_start (EV_P_ ev_signal *w)	2487	ev_signal_start (EV_P_ ev_signal *w)
2314	{	2488	{
2315	#if EV_MULTIPLICITY	2489	#if EV_MULTIPLICITY
2316	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2490	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2317	#endif	2491	#endif
2318	if (expect_false (ev_is_active (w)))	2492	if (expect_false (ev_is_active (w)))
2319	return;	2493	return;
2320		2494
2321	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2495	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2322		2496
2323	evpipe_init (EV_A);	2497	evpipe_init (EV_A);
2324		2498
2325	EV_FREQUENT_CHECK;	2499	EV_FREQUENT_CHECK;
2326		2500
…		…
2329	sigset_t full, prev;	2503	sigset_t full, prev;
2330	sigfillset (&full);	2504	sigfillset (&full);
2331	sigprocmask (SIG_SETMASK, &full, &prev);	2505	sigprocmask (SIG_SETMASK, &full, &prev);
2332	#endif	2506	#endif
2333		2507
2334	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2508	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2335		2509
2336	#ifndef _WIN32	2510	#ifndef _WIN32
2337	sigprocmask (SIG_SETMASK, &prev, 0);	2511	sigprocmask (SIG_SETMASK, &prev, 0);
2338	#endif	2512	#endif
2339	}	2513	}
…		…
2377		2551
2378	void	2552	void
2379	ev_child_start (EV_P_ ev_child *w)	2553	ev_child_start (EV_P_ ev_child *w)
2380	{	2554	{
2381	#if EV_MULTIPLICITY	2555	#if EV_MULTIPLICITY
2382	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2556	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2383	#endif	2557	#endif
2384	if (expect_false (ev_is_active (w)))	2558	if (expect_false (ev_is_active (w)))
2385	return;	2559	return;
2386		2560
2387	EV_FREQUENT_CHECK;	2561	EV_FREQUENT_CHECK;
…		…
2412	# ifdef _WIN32	2586	# ifdef _WIN32
2413	# undef lstat	2587	# undef lstat
2414	# define lstat(a,b) _stati64 (a,b)	2588	# define lstat(a,b) _stati64 (a,b)
2415	# endif	2589	# endif
2416		2590
2417	#define DEF_STAT_INTERVAL 5.0074891	2591	#define DEF_STAT_INTERVAL 5.0074891
		2592	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2418	#define MIN_STAT_INTERVAL 0.1074891	2593	#define MIN_STAT_INTERVAL 0.1074891
2419		2594
2420	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2595	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2421		2596
2422	#if EV_USE_INOTIFY	2597	#if EV_USE_INOTIFY
2423	# define EV_INOTIFY_BUFSIZE 8192	2598	# define EV_INOTIFY_BUFSIZE 8192
…		…
2427	{	2602	{
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);	2603	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		2604
2430	if (w->wd < 0)	2605	if (w->wd < 0)
2431	{	2606	{
		2607	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 */	2608	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2433		2609
2434	/* monitor some parent directory for speedup hints */	2610	/* monitor some parent directory for speedup hints */
2435	/* note that exceeding the hardcoded limit is not a correctness issue, */	2611	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2436	/* but an efficiency issue only */	2612	/* but an efficiency issue only */
2437	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2613	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2438	{	2614	{
2439	char path [4096];	2615	char path [4096];
2440	strcpy (path, w->path);	2616	strcpy (path, w->path);
…		…
2444	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2620	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2445	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2621	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2446		2622
2447	char *pend = strrchr (path, '/');	2623	char *pend = strrchr (path, '/');
2448		2624
2449	if (!pend)	2625	if (!pend || pend == path)
2450	break; /* whoops, no '/', complain to your admin */	2626	break;
2451		2627
2452	*pend = 0;	2628	*pend = 0;
2453	w->wd = inotify_add_watch (fs_fd, path, mask);	2629	w->wd = inotify_add_watch (fs_fd, path, mask);
2454	}	2630	}
2455	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2631	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2456	}	2632	}
2457	}	2633	}
2458	else
2459	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2460		2634
2461	if (w->wd >= 0)	2635	if (w->wd >= 0)
		2636	{
2462	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2637	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2638
		2639	/* now local changes will be tracked by inotify, but remote changes won't */
		2640	/* unless the filesystem it known to be local, we therefore still poll */
		2641	/* also do poll on <2.6.25, but with normal frequency */
		2642	struct statfs sfs;
		2643
		2644	if (fs_2625 && !statfs (w->path, &sfs))
		2645	if (sfs.f_type == 0x1373 /* devfs */
		2646	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2647	|| sfs.f_type == 0x3153464a /* jfs */
		2648	|| sfs.f_type == 0x52654973 /* reiser3 */
		2649	|| sfs.f_type == 0x01021994 /* tempfs */
		2650	|| sfs.f_type == 0x58465342 /* xfs */)
		2651	return;
		2652
		2653	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2654	ev_timer_again (EV_A_ &w->timer);
		2655	}
2463	}	2656	}
2464		2657
2465	static void noinline	2658	static void noinline
2466	infy_del (EV_P_ ev_stat *w)	2659	infy_del (EV_P_ ev_stat *w)
2467	{	2660	{
…		…
2481		2674
2482	static void noinline	2675	static void noinline
2483	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2676	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2484	{	2677	{
2485	if (slot < 0)	2678	if (slot < 0)
2486	/* overflow, need to check for all hahs slots */	2679	/* overflow, need to check for all hash slots */
2487	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2680	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2488	infy_wd (EV_A_ slot, wd, ev);	2681	infy_wd (EV_A_ slot, wd, ev);
2489	else	2682	else
2490	{	2683	{
2491	WL w_;	2684	WL w_;
…		…
2497		2690
2498	if (w->wd == wd || wd == -1)	2691	if (w->wd == wd || wd == -1)
2499	{	2692	{
2500	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2693	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2501	{	2694	{
		2695	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2502	w->wd = -1;	2696	w->wd = -1;
2503	infy_add (EV_A_ w); /* re-add, no matter what */	2697	infy_add (EV_A_ w); /* re-add, no matter what */
2504	}	2698	}
2505		2699
2506	stat_timer_cb (EV_A_ &w->timer, 0);	2700	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2519		2713
2520	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2714	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2521	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2715	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2522	}	2716	}
2523		2717
2524	void inline_size	2718	inline_size void
		2719	check_2625 (EV_P)
		2720	{
		2721	/* kernels < 2.6.25 are borked
		2722	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2723	*/
		2724	struct utsname buf;
		2725	int major, minor, micro;
		2726
		2727	if (uname (&buf))
		2728	return;
		2729
		2730	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2731	return;
		2732
		2733	if (major < 2
		2734	|| (major == 2 && minor < 6)
		2735	|| (major == 2 && minor == 6 && micro < 25))
		2736	return;
		2737
		2738	fs_2625 = 1;
		2739	}
		2740
		2741	inline_size void
2525	infy_init (EV_P)	2742	infy_init (EV_P)
2526	{	2743	{
2527	if (fs_fd != -2)	2744	if (fs_fd != -2)
2528	return;	2745	return;
		2746
		2747	fs_fd = -1;
		2748
		2749	check_2625 (EV_A);
2529		2750
2530	fs_fd = inotify_init ();	2751	fs_fd = inotify_init ();
2531		2752
2532	if (fs_fd >= 0)	2753	if (fs_fd >= 0)
2533	{	2754	{
…		…
2535	ev_set_priority (&fs_w, EV_MAXPRI);	2756	ev_set_priority (&fs_w, EV_MAXPRI);
2536	ev_io_start (EV_A_ &fs_w);	2757	ev_io_start (EV_A_ &fs_w);
2537	}	2758	}
2538	}	2759	}
2539		2760
2540	void inline_size	2761	inline_size void
2541	infy_fork (EV_P)	2762	infy_fork (EV_P)
2542	{	2763	{
2543	int slot;	2764	int slot;
2544		2765
2545	if (fs_fd < 0)	2766	if (fs_fd < 0)
…		…
2561	w->wd = -1;	2782	w->wd = -1;
2562		2783
2563	if (fs_fd >= 0)	2784	if (fs_fd >= 0)
2564	infy_add (EV_A_ w); /* re-add, no matter what */	2785	infy_add (EV_A_ w); /* re-add, no matter what */
2565	else	2786	else
2566	ev_timer_start (EV_A_ &w->timer);	2787	ev_timer_again (EV_A_ &w->timer);
2567	}	2788	}
2568
2569	}	2789	}
2570	}	2790	}
2571		2791
		2792	#endif
		2793
		2794	#ifdef _WIN32
		2795	# define EV_LSTAT(p,b) _stati64 (p, b)
		2796	#else
		2797	# define EV_LSTAT(p,b) lstat (p, b)
2572	#endif	2798	#endif
2573		2799
2574	void	2800	void
2575	ev_stat_stat (EV_P_ ev_stat *w)	2801	ev_stat_stat (EV_P_ ev_stat *w)
2576	{	2802	{
…		…
2603	|| w->prev.st_atime != w->attr.st_atime	2829	|| w->prev.st_atime != w->attr.st_atime
2604	|| w->prev.st_mtime != w->attr.st_mtime	2830	|| w->prev.st_mtime != w->attr.st_mtime
2605	|| w->prev.st_ctime != w->attr.st_ctime	2831	|| w->prev.st_ctime != w->attr.st_ctime
2606	) {	2832	) {
2607	#if EV_USE_INOTIFY	2833	#if EV_USE_INOTIFY
		2834	if (fs_fd >= 0)
		2835	{
2608	infy_del (EV_A_ w);	2836	infy_del (EV_A_ w);
2609	infy_add (EV_A_ w);	2837	infy_add (EV_A_ w);
2610	ev_stat_stat (EV_A_ w); /* avoid race... */	2838	ev_stat_stat (EV_A_ w); /* avoid race... */
		2839	}
2611	#endif	2840	#endif
2612		2841
2613	ev_feed_event (EV_A_ w, EV_STAT);	2842	ev_feed_event (EV_A_ w, EV_STAT);
2614	}	2843	}
2615	}	2844	}
…		…
2618	ev_stat_start (EV_P_ ev_stat *w)	2847	ev_stat_start (EV_P_ ev_stat *w)
2619	{	2848	{
2620	if (expect_false (ev_is_active (w)))	2849	if (expect_false (ev_is_active (w)))
2621	return;	2850	return;
2622		2851
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);	2852	ev_stat_stat (EV_A_ w);
2628		2853
		2854	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2629	if (w->interval < MIN_STAT_INTERVAL)	2855	w->interval = MIN_STAT_INTERVAL;
2630	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2631		2856
2632	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2857	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));	2858	ev_set_priority (&w->timer, ev_priority (w));
2634		2859
2635	#if EV_USE_INOTIFY	2860	#if EV_USE_INOTIFY
2636	infy_init (EV_A);	2861	infy_init (EV_A);
2637		2862
2638	if (fs_fd >= 0)	2863	if (fs_fd >= 0)
2639	infy_add (EV_A_ w);	2864	infy_add (EV_A_ w);
2640	else	2865	else
2641	#endif	2866	#endif
2642	ev_timer_start (EV_A_ &w->timer);	2867	ev_timer_again (EV_A_ &w->timer);
2643		2868
2644	ev_start (EV_A_ (W)w, 1);	2869	ev_start (EV_A_ (W)w, 1);
2645		2870
2646	EV_FREQUENT_CHECK;	2871	EV_FREQUENT_CHECK;
2647	}	2872	}
…		…
2817	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3042	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2818	}	3043	}
2819	}	3044	}
2820	}	3045	}
2821		3046
		3047	static void
		3048	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3049	{
		3050	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3051
		3052	ev_embed_stop (EV_A_ w);
		3053
		3054	{
		3055	struct ev_loop *loop = w->other;
		3056
		3057	ev_loop_fork (EV_A);
		3058	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3059	}
		3060
		3061	ev_embed_start (EV_A_ w);
		3062	}
		3063
2822	#if 0	3064	#if 0
2823	static void	3065	static void
2824	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3066	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2825	{	3067	{
2826	ev_idle_stop (EV_A_ idle);	3068	ev_idle_stop (EV_A_ idle);
…		…
2833	if (expect_false (ev_is_active (w)))	3075	if (expect_false (ev_is_active (w)))
2834	return;	3076	return;
2835		3077
2836	{	3078	{
2837	struct ev_loop *loop = w->other;	3079	struct ev_loop *loop = w->other;
2838	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3080	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);	3081	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2840	}	3082	}
2841		3083
2842	EV_FREQUENT_CHECK;	3084	EV_FREQUENT_CHECK;
2843		3085
…		…
2846		3088
2847	ev_prepare_init (&w->prepare, embed_prepare_cb);	3089	ev_prepare_init (&w->prepare, embed_prepare_cb);
2848	ev_set_priority (&w->prepare, EV_MINPRI);	3090	ev_set_priority (&w->prepare, EV_MINPRI);
2849	ev_prepare_start (EV_A_ &w->prepare);	3091	ev_prepare_start (EV_A_ &w->prepare);
2850		3092
		3093	ev_fork_init (&w->fork, embed_fork_cb);
		3094	ev_fork_start (EV_A_ &w->fork);
		3095
2851	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3096	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2852		3097
2853	ev_start (EV_A_ (W)w, 1);	3098	ev_start (EV_A_ (W)w, 1);
2854		3099
2855	EV_FREQUENT_CHECK;	3100	EV_FREQUENT_CHECK;
…		…
2862	if (expect_false (!ev_is_active (w)))	3107	if (expect_false (!ev_is_active (w)))
2863	return;	3108	return;
2864		3109
2865	EV_FREQUENT_CHECK;	3110	EV_FREQUENT_CHECK;
2866		3111
2867	ev_io_stop (EV_A_ &w->io);	3112	ev_io_stop (EV_A_ &w->io);
2868	ev_prepare_stop (EV_A_ &w->prepare);	3113	ev_prepare_stop (EV_A_ &w->prepare);
2869		3114	ev_fork_stop (EV_A_ &w->fork);
2870	ev_stop (EV_A_ (W)w);
2871		3115
2872	EV_FREQUENT_CHECK;	3116	EV_FREQUENT_CHECK;
2873	}	3117	}
2874	#endif	3118	#endif
2875		3119
…		…
2972	once_cb (EV_P_ struct ev_once *once, int revents)	3216	once_cb (EV_P_ struct ev_once *once, int revents)
2973	{	3217	{
2974	void (*cb)(int revents, void *arg) = once->cb;	3218	void (*cb)(int revents, void *arg) = once->cb;
2975	void *arg = once->arg;	3219	void *arg = once->arg;
2976		3220
2977	ev_io_stop (EV_A_ &once->io);	3221	ev_io_stop (EV_A_ &once->io);
2978	ev_timer_stop (EV_A_ &once->to);	3222	ev_timer_stop (EV_A_ &once->to);
2979	ev_free (once);	3223	ev_free (once);
2980		3224
2981	cb (revents, arg);	3225	cb (revents, arg);
2982	}	3226	}
2983		3227
2984	static void	3228	static void
2985	once_cb_io (EV_P_ ev_io *w, int revents)	3229	once_cb_io (EV_P_ ev_io *w, int revents)
2986	{	3230	{
2987	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3231	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3232
		3233	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2988	}	3234	}
2989		3235
2990	static void	3236	static void
2991	once_cb_to (EV_P_ ev_timer *w, int revents)	3237	once_cb_to (EV_P_ ev_timer *w, int revents)
2992	{	3238	{
2993	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3239	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3240
		3241	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2994	}	3242	}
2995		3243
2996	void	3244	void
2997	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3245	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2998	{	3246	{
…		…
3020	ev_timer_set (&once->to, timeout, 0.);	3268	ev_timer_set (&once->to, timeout, 0.);
3021	ev_timer_start (EV_A_ &once->to);	3269	ev_timer_start (EV_A_ &once->to);
3022	}	3270	}
3023	}	3271	}
3024		3272
		3273	/*****************************************************************************/
		3274
		3275	#if EV_WALK_ENABLE
		3276	void
		3277	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3278	{
		3279	int i, j;
		3280	ev_watcher_list *wl, *wn;
		3281
		3282	if (types & (EV_IO | EV_EMBED))
		3283	for (i = 0; i < anfdmax; ++i)
		3284	for (wl = anfds [i].head; wl; )
		3285	{
		3286	wn = wl->next;
		3287
		3288	#if EV_EMBED_ENABLE
		3289	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3290	{
		3291	if (types & EV_EMBED)
		3292	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3293	}
		3294	else
		3295	#endif
		3296	#if EV_USE_INOTIFY
		3297	if (ev_cb ((ev_io *)wl) == infy_cb)
		3298	;
		3299	else
		3300	#endif
		3301	if ((ev_io *)wl != &pipe_w)
		3302	if (types & EV_IO)
		3303	cb (EV_A_ EV_IO, wl);
		3304
		3305	wl = wn;
		3306	}
		3307
		3308	if (types & (EV_TIMER | EV_STAT))
		3309	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3310	#if EV_STAT_ENABLE
		3311	/*TODO: timer is not always active*/
		3312	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3313	{
		3314	if (types & EV_STAT)
		3315	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3316	}
		3317	else
		3318	#endif
		3319	if (types & EV_TIMER)
		3320	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3321
		3322	#if EV_PERIODIC_ENABLE
		3323	if (types & EV_PERIODIC)
		3324	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3325	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3326	#endif
		3327
		3328	#if EV_IDLE_ENABLE
		3329	if (types & EV_IDLE)
		3330	for (j = NUMPRI; i--; )
		3331	for (i = idlecnt [j]; i--; )
		3332	cb (EV_A_ EV_IDLE, idles [j][i]);
		3333	#endif
		3334
		3335	#if EV_FORK_ENABLE
		3336	if (types & EV_FORK)
		3337	for (i = forkcnt; i--; )
		3338	if (ev_cb (forks [i]) != embed_fork_cb)
		3339	cb (EV_A_ EV_FORK, forks [i]);
		3340	#endif
		3341
		3342	#if EV_ASYNC_ENABLE
		3343	if (types & EV_ASYNC)
		3344	for (i = asynccnt; i--; )
		3345	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3346	#endif
		3347
		3348	if (types & EV_PREPARE)
		3349	for (i = preparecnt; i--; )
		3350	#if EV_EMBED_ENABLE
		3351	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3352	#endif
		3353	cb (EV_A_ EV_PREPARE, prepares [i]);
		3354
		3355	if (types & EV_CHECK)
		3356	for (i = checkcnt; i--; )
		3357	cb (EV_A_ EV_CHECK, checks [i]);
		3358
		3359	if (types & EV_SIGNAL)
		3360	for (i = 0; i < signalmax; ++i)
		3361	for (wl = signals [i].head; wl; )
		3362	{
		3363	wn = wl->next;
		3364	cb (EV_A_ EV_SIGNAL, wl);
		3365	wl = wn;
		3366	}
		3367
		3368	if (types & EV_CHILD)
		3369	for (i = EV_PID_HASHSIZE; i--; )
		3370	for (wl = childs [i]; wl; )
		3371	{
		3372	wn = wl->next;
		3373	cb (EV_A_ EV_CHILD, wl);
		3374	wl = wn;
		3375	}
		3376	/* EV_STAT 0x00001000 /* stat data changed */
		3377	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3378	}
		3379	#endif
		3380
3025	#if EV_MULTIPLICITY	3381	#if EV_MULTIPLICITY
3026	#include "ev_wrap.h"	3382	#include "ev_wrap.h"
3027	#endif	3383	#endif
3028		3384
3029	#ifdef __cplusplus	3385	#ifdef __cplusplus

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