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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 1.297 by root, Fri Jul 10 00:36:21 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)
…		…
505		567
506	static int ev_default_loop_ptr;	568	static int ev_default_loop_ptr;
507		569
508	#endif	570	#endif
509		571
		572	#if EV_MINIMAL < 2
		573	# define EV_SUSPEND_CB if (expect_false (suspend_cb)) suspend_cb (EV_A)
		574	# define EV_RESUME_CB if (expect_false (resume_cb )) resume_cb (EV_A)
		575	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		576	#else
		577	# define EV_SUSPEND_CB (void)0
		578	# define EV_RESUME_CB (void)0
		579	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		580	#endif
		581
510	/*****************************************************************************/	582	/*****************************************************************************/
511		583
		584	#ifndef EV_HAVE_EV_TIME
512	ev_tstamp	585	ev_tstamp
513	ev_time (void)	586	ev_time (void)
514	{	587	{
515	#if EV_USE_REALTIME	588	#if EV_USE_REALTIME
		589	if (expect_true (have_realtime))
		590	{
516	struct timespec ts;	591	struct timespec ts;
517	clock_gettime (CLOCK_REALTIME, &ts);	592	clock_gettime (CLOCK_REALTIME, &ts);
518	return ts.tv_sec + ts.tv_nsec * 1e-9;	593	return ts.tv_sec + ts.tv_nsec * 1e-9;
519	#else	594	}
		595	#endif
		596
520	struct timeval tv;	597	struct timeval tv;
521	gettimeofday (&tv, 0);	598	gettimeofday (&tv, 0);
522	return tv.tv_sec + tv.tv_usec * 1e-6;	599	return tv.tv_sec + tv.tv_usec * 1e-6;
523	#endif
524	}	600	}
		601	#endif
525		602
526	ev_tstamp inline_size	603	inline_size ev_tstamp
527	get_clock (void)	604	get_clock (void)
528	{	605	{
529	#if EV_USE_MONOTONIC	606	#if EV_USE_MONOTONIC
530	if (expect_true (have_monotonic))	607	if (expect_true (have_monotonic))
531	{	608	{
…		…
564	struct timeval tv;	641	struct timeval tv;
565		642
566	tv.tv_sec = (time_t)delay;	643	tv.tv_sec = (time_t)delay;
567	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	644	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
568		645
		646	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		647	/* somehting not guaranteed by newer posix versions, but guaranteed */
		648	/* by older ones */
569	select (0, 0, 0, 0, &tv);	649	select (0, 0, 0, 0, &tv);
570	#endif	650	#endif
571	}	651	}
572	}	652	}
573		653
574	/*****************************************************************************/	654	/*****************************************************************************/
575		655
576	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	656	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
577		657
578	int inline_size	658	/* find a suitable new size for the given array, */
		659	/* hopefully by rounding to a ncie-to-malloc size */
		660	inline_size int
579	array_nextsize (int elem, int cur, int cnt)	661	array_nextsize (int elem, int cur, int cnt)
580	{	662	{
581	int ncur = cur + 1;	663	int ncur = cur + 1;
582		664
583	do	665	do
…		…
600	array_realloc (int elem, void *base, int *cur, int cnt)	682	array_realloc (int elem, void *base, int *cur, int cnt)
601	{	683	{
602	*cur = array_nextsize (elem, *cur, cnt);	684	*cur = array_nextsize (elem, *cur, cnt);
603	return ev_realloc (base, elem * *cur);	685	return ev_realloc (base, elem * *cur);
604	}	686	}
		687
		688	#define array_init_zero(base,count) \
		689	memset ((void *)(base), 0, sizeof (*(base)) * (count))
605		690
606	#define array_needsize(type,base,cur,cnt,init) \	691	#define array_needsize(type,base,cur,cnt,init) \
607	if (expect_false ((cnt) > (cur))) \	692	if (expect_false ((cnt) > (cur))) \
608	{ \	693	{ \
609	int ocur_ = (cur); \	694	int ocur_ = (cur); \
…		…
621	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	706	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
622	}	707	}
623	#endif	708	#endif
624		709
625	#define array_free(stem, idx) \	710	#define array_free(stem, idx) \
626	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	711	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
627		712
628	/*****************************************************************************/	713	/*****************************************************************************/
		714
		715	/* dummy callback for pending events */
		716	static void noinline
		717	pendingcb (EV_P_ ev_prepare *w, int revents)
		718	{
		719	}
629		720
630	void noinline	721	void noinline
631	ev_feed_event (EV_P_ void *w, int revents)	722	ev_feed_event (EV_P_ void *w, int revents)
632	{	723	{
633	W w_ = (W)w;	724	W w_ = (W)w;
…		…
642	pendings [pri][w_->pending - 1].w = w_;	733	pendings [pri][w_->pending - 1].w = w_;
643	pendings [pri][w_->pending - 1].events = revents;	734	pendings [pri][w_->pending - 1].events = revents;
644	}	735	}
645	}	736	}
646		737
647	void inline_speed	738	inline_speed void
		739	feed_reverse (EV_P_ W w)
		740	{
		741	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		742	rfeeds [rfeedcnt++] = w;
		743	}
		744
		745	inline_size void
		746	feed_reverse_done (EV_P_ int revents)
		747	{
		748	do
		749	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		750	while (rfeedcnt);
		751	}
		752
		753	inline_speed void
648	queue_events (EV_P_ W *events, int eventcnt, int type)	754	queue_events (EV_P_ W *events, int eventcnt, int type)
649	{	755	{
650	int i;	756	int i;
651		757
652	for (i = 0; i < eventcnt; ++i)	758	for (i = 0; i < eventcnt; ++i)
653	ev_feed_event (EV_A_ events [i], type);	759	ev_feed_event (EV_A_ events [i], type);
654	}	760	}
655		761
656	/*****************************************************************************/	762	/*****************************************************************************/
657		763
658	void inline_size	764	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)	765	fd_event (EV_P_ int fd, int revents)
673	{	766	{
674	ANFD *anfd = anfds + fd;	767	ANFD *anfd = anfds + fd;
675	ev_io *w;	768	ev_io *w;
676		769
…		…
688	{	781	{
689	if (fd >= 0 && fd < anfdmax)	782	if (fd >= 0 && fd < anfdmax)
690	fd_event (EV_A_ fd, revents);	783	fd_event (EV_A_ fd, revents);
691	}	784	}
692		785
693	void inline_size	786	/* make sure the external fd watch events are in-sync */
		787	/* with the kernel/libev internal state */
		788	inline_size void
694	fd_reify (EV_P)	789	fd_reify (EV_P)
695	{	790	{
696	int i;	791	int i;
697		792
698	for (i = 0; i < fdchangecnt; ++i)	793	for (i = 0; i < fdchangecnt; ++i)
…		…
707	events |= (unsigned char)w->events;	802	events |= (unsigned char)w->events;
708		803
709	#if EV_SELECT_IS_WINSOCKET	804	#if EV_SELECT_IS_WINSOCKET
710	if (events)	805	if (events)
711	{	806	{
712	unsigned long argp;	807	unsigned long arg;
713	#ifdef EV_FD_TO_WIN32_HANDLE	808	#ifdef EV_FD_TO_WIN32_HANDLE
714	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	809	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
715	#else	810	#else
716	anfd->handle = _get_osfhandle (fd);	811	anfd->handle = _get_osfhandle (fd);
717	#endif	812	#endif
718	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	813	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
719	}	814	}
720	#endif	815	#endif
721		816
722	{	817	{
723	unsigned char o_events = anfd->events;	818	unsigned char o_events = anfd->events;
724	unsigned char o_reify = anfd->reify;	819	unsigned char o_reify = anfd->reify;
725		820
726	anfd->reify = 0;	821	anfd->reify = 0;
727	anfd->events = events;	822	anfd->events = events;
728		823
729	if (o_events != events || o_reify & EV_IOFDSET)	824	if (o_events != events || o_reify & EV__IOFDSET)
730	backend_modify (EV_A_ fd, o_events, events);	825	backend_modify (EV_A_ fd, o_events, events);
731	}	826	}
732	}	827	}
733		828
734	fdchangecnt = 0;	829	fdchangecnt = 0;
735	}	830	}
736		831
737	void inline_size	832	/* something about the given fd changed */
		833	inline_size void
738	fd_change (EV_P_ int fd, int flags)	834	fd_change (EV_P_ int fd, int flags)
739	{	835	{
740	unsigned char reify = anfds [fd].reify;	836	unsigned char reify = anfds [fd].reify;
741	anfds [fd].reify |= flags;	837	anfds [fd].reify |= flags;
742		838
…		…
746	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	842	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
747	fdchanges [fdchangecnt - 1] = fd;	843	fdchanges [fdchangecnt - 1] = fd;
748	}	844	}
749	}	845	}
750		846
751	void inline_speed	847	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		848	inline_speed void
752	fd_kill (EV_P_ int fd)	849	fd_kill (EV_P_ int fd)
753	{	850	{
754	ev_io *w;	851	ev_io *w;
755		852
756	while ((w = (ev_io *)anfds [fd].head))	853	while ((w = (ev_io *)anfds [fd].head))
…		…
758	ev_io_stop (EV_A_ w);	855	ev_io_stop (EV_A_ w);
759	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	856	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
760	}	857	}
761	}	858	}
762		859
763	int inline_size	860	/* check whether the given fd is atcually valid, for error recovery */
		861	inline_size int
764	fd_valid (int fd)	862	fd_valid (int fd)
765	{	863	{
766	#ifdef _WIN32	864	#ifdef _WIN32
767	return _get_osfhandle (fd) != -1;	865	return _get_osfhandle (fd) != -1;
768	#else	866	#else
…		…
776	{	874	{
777	int fd;	875	int fd;
778		876
779	for (fd = 0; fd < anfdmax; ++fd)	877	for (fd = 0; fd < anfdmax; ++fd)
780	if (anfds [fd].events)	878	if (anfds [fd].events)
781	if (!fd_valid (fd) == -1 && errno == EBADF)	879	if (!fd_valid (fd) && errno == EBADF)
782	fd_kill (EV_A_ fd);	880	fd_kill (EV_A_ fd);
783	}	881	}
784		882
785	/* called on ENOMEM in select/poll to kill some fds and retry */	883	/* called on ENOMEM in select/poll to kill some fds and retry */
786	static void noinline	884	static void noinline
…		…
804		902
805	for (fd = 0; fd < anfdmax; ++fd)	903	for (fd = 0; fd < anfdmax; ++fd)
806	if (anfds [fd].events)	904	if (anfds [fd].events)
807	{	905	{
808	anfds [fd].events = 0;	906	anfds [fd].events = 0;
		907	anfds [fd].emask = 0;
809	fd_change (EV_A_ fd, EV_IOFDSET | 1);	908	fd_change (EV_A_ fd, EV__IOFDSET | 1);
810	}	909	}
811	}	910	}
812		911
813	/*****************************************************************************/	912	/*****************************************************************************/
814		913
…		…
830	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	929	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
831	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)	930	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
832	#define UPHEAP_DONE(p,k) ((p) == (k))	931	#define UPHEAP_DONE(p,k) ((p) == (k))
833		932
834	/* away from the root */	933	/* away from the root */
835	void inline_speed	934	inline_speed void
836	downheap (ANHE *heap, int N, int k)	935	downheap (ANHE *heap, int N, int k)
837	{	936	{
838	ANHE he = heap [k];	937	ANHE he = heap [k];
839	ANHE *E = heap + N + HEAP0;	938	ANHE *E = heap + N + HEAP0;
840		939
…		…
880	#define HEAP0 1	979	#define HEAP0 1
881	#define HPARENT(k) ((k) >> 1)	980	#define HPARENT(k) ((k) >> 1)
882	#define UPHEAP_DONE(p,k) (!(p))	981	#define UPHEAP_DONE(p,k) (!(p))
883		982
884	/* away from the root */	983	/* away from the root */
885	void inline_speed	984	inline_speed void
886	downheap (ANHE *heap, int N, int k)	985	downheap (ANHE *heap, int N, int k)
887	{	986	{
888	ANHE he = heap [k];	987	ANHE he = heap [k];
889		988
890	for (;;)	989	for (;;)
…		…
910	ev_active (ANHE_w (he)) = k;	1009	ev_active (ANHE_w (he)) = k;
911	}	1010	}
912	#endif	1011	#endif
913		1012
914	/* towards the root */	1013	/* towards the root */
915	void inline_speed	1014	inline_speed void
916	upheap (ANHE *heap, int k)	1015	upheap (ANHE *heap, int k)
917	{	1016	{
918	ANHE he = heap [k];	1017	ANHE he = heap [k];
919		1018
920	for (;;)	1019	for (;;)
…		…
931		1030
932	heap [k] = he;	1031	heap [k] = he;
933	ev_active (ANHE_w (he)) = k;	1032	ev_active (ANHE_w (he)) = k;
934	}	1033	}
935		1034
936	void inline_size	1035	/* move an element suitably so it is in a correct place */
		1036	inline_size void
937	adjustheap (ANHE *heap, int N, int k)	1037	adjustheap (ANHE *heap, int N, int k)
938	{	1038	{
939	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1039	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
940	upheap (heap, k);	1040	upheap (heap, k);
941	else	1041	else
942	downheap (heap, N, k);	1042	downheap (heap, N, k);
943	}	1043	}
944		1044
945	/* rebuild the heap: this function is used only once and executed rarely */	1045	/* rebuild the heap: this function is used only once and executed rarely */
946	void inline_size	1046	inline_size void
947	reheap (ANHE *heap, int N)	1047	reheap (ANHE *heap, int N)
948	{	1048	{
949	int i;	1049	int i;
950		1050
951	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */	1051	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
…		…
954	upheap (heap, i + HEAP0);	1054	upheap (heap, i + HEAP0);
955	}	1055	}
956		1056
957	/*****************************************************************************/	1057	/*****************************************************************************/
958		1058
		1059	/* associate signal watchers to a signal signal */
959	typedef struct	1060	typedef struct
960	{	1061	{
961	WL head;	1062	WL head;
962	EV_ATOMIC_T gotsig;	1063	EV_ATOMIC_T gotsig;
963	} ANSIG;	1064	} ANSIG;
…		…
965	static ANSIG *signals;	1066	static ANSIG *signals;
966	static int signalmax;	1067	static int signalmax;
967		1068
968	static EV_ATOMIC_T gotsig;	1069	static EV_ATOMIC_T gotsig;
969		1070
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	/*****************************************************************************/	1071	/*****************************************************************************/
983		1072
984	void inline_speed	1073	/* used to prepare libev internal fd's */
		1074	/* this is not fork-safe */
		1075	inline_speed void
985	fd_intern (int fd)	1076	fd_intern (int fd)
986	{	1077	{
987	#ifdef _WIN32	1078	#ifdef _WIN32
988	int arg = 1;	1079	unsigned long arg = 1;
989	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1080	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
990	#else	1081	#else
991	fcntl (fd, F_SETFD, FD_CLOEXEC);	1082	fcntl (fd, F_SETFD, FD_CLOEXEC);
992	fcntl (fd, F_SETFL, O_NONBLOCK);	1083	fcntl (fd, F_SETFL, O_NONBLOCK);
993	#endif	1084	#endif
994	}	1085	}
995		1086
996	static void noinline	1087	static void noinline
997	evpipe_init (EV_P)	1088	evpipe_init (EV_P)
998	{	1089	{
999	if (!ev_is_active (&pipeev))	1090	if (!ev_is_active (&pipe_w))
1000	{	1091	{
1001	#if EV_USE_EVENTFD	1092	#if EV_USE_EVENTFD
1002	if ((evfd = eventfd (0, 0)) >= 0)	1093	if ((evfd = eventfd (0, 0)) >= 0)
1003	{	1094	{
1004	evpipe [0] = -1;	1095	evpipe [0] = -1;
1005	fd_intern (evfd);	1096	fd_intern (evfd);
1006	ev_io_set (&pipeev, evfd, EV_READ);	1097	ev_io_set (&pipe_w, evfd, EV_READ);
1007	}	1098	}
1008	else	1099	else
1009	#endif	1100	#endif
1010	{	1101	{
1011	while (pipe (evpipe))	1102	while (pipe (evpipe))
1012	syserr ("(libev) error creating signal/async pipe");	1103	ev_syserr ("(libev) error creating signal/async pipe");
1013		1104
1014	fd_intern (evpipe [0]);	1105	fd_intern (evpipe [0]);
1015	fd_intern (evpipe [1]);	1106	fd_intern (evpipe [1]);
1016	ev_io_set (&pipeev, evpipe [0], EV_READ);	1107	ev_io_set (&pipe_w, evpipe [0], EV_READ);
1017	}	1108	}
1018		1109
1019	ev_io_start (EV_A_ &pipeev);	1110	ev_io_start (EV_A_ &pipe_w);
1020	ev_unref (EV_A); /* watcher should not keep loop alive */	1111	ev_unref (EV_A); /* watcher should not keep loop alive */
1021	}	1112	}
1022	}	1113	}
1023		1114
1024	void inline_size	1115	inline_size void
1025	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1116	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1026	{	1117	{
1027	if (!*flag)	1118	if (!*flag)
1028	{	1119	{
1029	int old_errno = errno; /* save errno because write might clobber it */	1120	int old_errno = errno; /* save errno because write might clobber it */
…		…
1042		1133
1043	errno = old_errno;	1134	errno = old_errno;
1044	}	1135	}
1045	}	1136	}
1046		1137
		1138	/* called whenever the libev signal pipe */
		1139	/* got some events (signal, async) */
1047	static void	1140	static void
1048	pipecb (EV_P_ ev_io *iow, int revents)	1141	pipecb (EV_P_ ev_io *iow, int revents)
1049	{	1142	{
1050	#if EV_USE_EVENTFD	1143	#if EV_USE_EVENTFD
1051	if (evfd >= 0)	1144	if (evfd >= 0)
…		…
1107	ev_feed_signal_event (EV_P_ int signum)	1200	ev_feed_signal_event (EV_P_ int signum)
1108	{	1201	{
1109	WL w;	1202	WL w;
1110		1203
1111	#if EV_MULTIPLICITY	1204	#if EV_MULTIPLICITY
1112	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1205	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1113	#endif	1206	#endif
1114		1207
1115	--signum;	1208	--signum;
1116		1209
1117	if (signum < 0 || signum >= signalmax)	1210	if (signum < 0 || signum >= signalmax)
…		…
1133		1226
1134	#ifndef WIFCONTINUED	1227	#ifndef WIFCONTINUED
1135	# define WIFCONTINUED(status) 0	1228	# define WIFCONTINUED(status) 0
1136	#endif	1229	#endif
1137		1230
1138	void inline_speed	1231	/* handle a single child status event */
		1232	inline_speed void
1139	child_reap (EV_P_ int chain, int pid, int status)	1233	child_reap (EV_P_ int chain, int pid, int status)
1140	{	1234	{
1141	ev_child *w;	1235	ev_child *w;
1142	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1236	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1143		1237
…		…
1156		1250
1157	#ifndef WCONTINUED	1251	#ifndef WCONTINUED
1158	# define WCONTINUED 0	1252	# define WCONTINUED 0
1159	#endif	1253	#endif
1160		1254
		1255	/* called on sigchld etc., calls waitpid */
1161	static void	1256	static void
1162	childcb (EV_P_ ev_signal *sw, int revents)	1257	childcb (EV_P_ ev_signal *sw, int revents)
1163	{	1258	{
1164	int pid, status;	1259	int pid, status;
1165		1260
…		…
1246	/* kqueue is borked on everything but netbsd apparently */	1341	/* kqueue is borked on everything but netbsd apparently */
1247	/* it usually doesn't work correctly on anything but sockets and pipes */	1342	/* it usually doesn't work correctly on anything but sockets and pipes */
1248	flags &= ~EVBACKEND_KQUEUE;	1343	flags &= ~EVBACKEND_KQUEUE;
1249	#endif	1344	#endif
1250	#ifdef __APPLE__	1345	#ifdef __APPLE__
1251	// flags &= ~EVBACKEND_KQUEUE; for documentation	1346	/* only select works correctly on that "unix-certified" platform */
1252	flags &= ~EVBACKEND_POLL;	1347	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1348	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1253	#endif	1349	#endif
1254		1350
1255	return flags;	1351	return flags;
1256	}	1352	}
1257		1353
…		…
1271	ev_backend (EV_P)	1367	ev_backend (EV_P)
1272	{	1368	{
1273	return backend;	1369	return backend;
1274	}	1370	}
1275		1371
		1372	#if EV_MINIMAL < 2
1276	unsigned int	1373	unsigned int
1277	ev_loop_count (EV_P)	1374	ev_loop_count (EV_P)
1278	{	1375	{
1279	return loop_count;	1376	return loop_count;
1280	}	1377	}
1281		1378
		1379	unsigned int
		1380	ev_loop_depth (EV_P)
		1381	{
		1382	return loop_depth;
		1383	}
		1384
1282	void	1385	void
1283	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1386	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1284	{	1387	{
1285	io_blocktime = interval;	1388	io_blocktime = interval;
1286	}	1389	}
…		…
1289	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1392	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1290	{	1393	{
1291	timeout_blocktime = interval;	1394	timeout_blocktime = interval;
1292	}	1395	}
1293		1396
		1397	void
		1398	ev_set_userdata (EV_P_ void *data)
		1399	{
		1400	userdata = data;
		1401	}
		1402
		1403	void *
		1404	ev_userdata (EV_P)
		1405	{
		1406	return userdata;
		1407	}
		1408
		1409	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1410	{
		1411	invoke_cb = invoke_pending_cb;
		1412	}
		1413
		1414	void ev_set_blocking_cb (EV_P_ void (*suspend_cb_)(EV_P), void (*resume_cb_)(EV_P))
		1415	{
		1416	suspend_cb = suspend_cb_;
		1417	resume_cb = resume_cb_;
		1418	}
		1419	#endif
		1420
		1421	/* initialise a loop structure, must be zero-initialised */
1294	static void noinline	1422	static void noinline
1295	loop_init (EV_P_ unsigned int flags)	1423	loop_init (EV_P_ unsigned int flags)
1296	{	1424	{
1297	if (!backend)	1425	if (!backend)
1298	{	1426	{
		1427	#if EV_USE_REALTIME
		1428	if (!have_realtime)
		1429	{
		1430	struct timespec ts;
		1431
		1432	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1433	have_realtime = 1;
		1434	}
		1435	#endif
		1436
1299	#if EV_USE_MONOTONIC	1437	#if EV_USE_MONOTONIC
		1438	if (!have_monotonic)
1300	{	1439	{
1301	struct timespec ts;	1440	struct timespec ts;
		1441
1302	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1442	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1303	have_monotonic = 1;	1443	have_monotonic = 1;
1304	}	1444	}
1305	#endif	1445	#endif
1306		1446
1307	ev_rt_now = ev_time ();	1447	ev_rt_now = ev_time ();
1308	mn_now = get_clock ();	1448	mn_now = get_clock ();
1309	now_floor = mn_now;	1449	now_floor = mn_now;
1310	rtmn_diff = ev_rt_now - mn_now;	1450	rtmn_diff = ev_rt_now - mn_now;
		1451	#if EV_MINIMAL < 2
		1452	invoke_cb = ev_invoke_pending;
		1453	#endif
1311		1454
1312	io_blocktime = 0.;	1455	io_blocktime = 0.;
1313	timeout_blocktime = 0.;	1456	timeout_blocktime = 0.;
1314	backend = 0;	1457	backend = 0;
1315	backend_fd = -1;	1458	backend_fd = -1;
…		…
1346	#endif	1489	#endif
1347	#if EV_USE_SELECT	1490	#if EV_USE_SELECT
1348	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1491	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1349	#endif	1492	#endif
1350		1493
		1494	ev_prepare_init (&pending_w, pendingcb);
		1495
1351	ev_init (&pipeev, pipecb);	1496	ev_init (&pipe_w, pipecb);
1352	ev_set_priority (&pipeev, EV_MAXPRI);	1497	ev_set_priority (&pipe_w, EV_MAXPRI);
1353	}	1498	}
1354	}	1499	}
1355		1500
		1501	/* free up a loop structure */
1356	static void noinline	1502	static void noinline
1357	loop_destroy (EV_P)	1503	loop_destroy (EV_P)
1358	{	1504	{
1359	int i;	1505	int i;
1360		1506
1361	if (ev_is_active (&pipeev))	1507	if (ev_is_active (&pipe_w))
1362	{	1508	{
1363	ev_ref (EV_A); /* signal watcher */	1509	ev_ref (EV_A); /* signal watcher */
1364	ev_io_stop (EV_A_ &pipeev);	1510	ev_io_stop (EV_A_ &pipe_w);
1365		1511
1366	#if EV_USE_EVENTFD	1512	#if EV_USE_EVENTFD
1367	if (evfd >= 0)	1513	if (evfd >= 0)
1368	close (evfd);	1514	close (evfd);
1369	#endif	1515	#endif
…		…
1408	}	1554	}
1409		1555
1410	ev_free (anfds); anfdmax = 0;	1556	ev_free (anfds); anfdmax = 0;
1411		1557
1412	/* have to use the microsoft-never-gets-it-right macro */	1558	/* have to use the microsoft-never-gets-it-right macro */
		1559	array_free (rfeed, EMPTY);
1413	array_free (fdchange, EMPTY);	1560	array_free (fdchange, EMPTY);
1414	array_free (timer, EMPTY);	1561	array_free (timer, EMPTY);
1415	#if EV_PERIODIC_ENABLE	1562	#if EV_PERIODIC_ENABLE
1416	array_free (periodic, EMPTY);	1563	array_free (periodic, EMPTY);
1417	#endif	1564	#endif
…		…
1426		1573
1427	backend = 0;	1574	backend = 0;
1428	}	1575	}
1429		1576
1430	#if EV_USE_INOTIFY	1577	#if EV_USE_INOTIFY
1431	void inline_size infy_fork (EV_P);	1578	inline_size void infy_fork (EV_P);
1432	#endif	1579	#endif
1433		1580
1434	void inline_size	1581	inline_size void
1435	loop_fork (EV_P)	1582	loop_fork (EV_P)
1436	{	1583	{
1437	#if EV_USE_PORT	1584	#if EV_USE_PORT
1438	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1585	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1439	#endif	1586	#endif
…		…
1445	#endif	1592	#endif
1446	#if EV_USE_INOTIFY	1593	#if EV_USE_INOTIFY
1447	infy_fork (EV_A);	1594	infy_fork (EV_A);
1448	#endif	1595	#endif
1449		1596
1450	if (ev_is_active (&pipeev))	1597	if (ev_is_active (&pipe_w))
1451	{	1598	{
1452	/* this "locks" the handlers against writing to the pipe */	1599	/* this "locks" the handlers against writing to the pipe */
1453	/* while we modify the fd vars */	1600	/* while we modify the fd vars */
1454	gotsig = 1;	1601	gotsig = 1;
1455	#if EV_ASYNC_ENABLE	1602	#if EV_ASYNC_ENABLE
1456	gotasync = 1;	1603	gotasync = 1;
1457	#endif	1604	#endif
1458		1605
1459	ev_ref (EV_A);	1606	ev_ref (EV_A);
1460	ev_io_stop (EV_A_ &pipeev);	1607	ev_io_stop (EV_A_ &pipe_w);
1461		1608
1462	#if EV_USE_EVENTFD	1609	#if EV_USE_EVENTFD
1463	if (evfd >= 0)	1610	if (evfd >= 0)
1464	close (evfd);	1611	close (evfd);
1465	#endif	1612	#endif
…		…
1470	close (evpipe [1]);	1617	close (evpipe [1]);
1471	}	1618	}
1472		1619
1473	evpipe_init (EV_A);	1620	evpipe_init (EV_A);
1474	/* now iterate over everything, in case we missed something */	1621	/* now iterate over everything, in case we missed something */
1475	pipecb (EV_A_ &pipeev, EV_READ);	1622	pipecb (EV_A_ &pipe_w, EV_READ);
1476	}	1623	}
1477		1624
1478	postfork = 0;	1625	postfork = 0;
1479	}	1626	}
1480		1627
…		…
1505	void	1652	void
1506	ev_loop_fork (EV_P)	1653	ev_loop_fork (EV_P)
1507	{	1654	{
1508	postfork = 1; /* must be in line with ev_default_fork */	1655	postfork = 1; /* must be in line with ev_default_fork */
1509	}	1656	}
		1657	#endif /* multiplicity */
1510		1658
1511	#if EV_VERIFY	1659	#if EV_VERIFY
1512	void noinline	1660	static void noinline
1513	verify_watcher (EV_P_ W w)	1661	verify_watcher (EV_P_ W w)
1514	{	1662	{
1515	assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));	1663	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1516		1664
1517	if (w->pending)	1665	if (w->pending)
1518	assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));	1666	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1519	}	1667	}
1520		1668
1521	static void noinline	1669	static void noinline
1522	verify_heap (EV_P_ ANHE *heap, int N)	1670	verify_heap (EV_P_ ANHE *heap, int N)
1523	{	1671	{
1524	int i;	1672	int i;
1525		1673
1526	for (i = HEAP0; i < N + HEAP0; ++i)	1674	for (i = HEAP0; i < N + HEAP0; ++i)
1527	{	1675	{
1528	assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));	1676	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])));	1677	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]))));	1678	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1531		1679
1532	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));	1680	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1533	}	1681	}
1534	}	1682	}
1535		1683
1536	static void noinline	1684	static void noinline
1537	array_verify (EV_P_ W *ws, int cnt)	1685	array_verify (EV_P_ W *ws, int cnt)
1538	{	1686	{
1539	while (cnt--)	1687	while (cnt--)
1540	{	1688	{
1541	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));	1689	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1542	verify_watcher (EV_A_ ws [cnt]);	1690	verify_watcher (EV_A_ ws [cnt]);
1543	}	1691	}
1544	}	1692	}
1545	#endif	1693	#endif
1546		1694
		1695	#if EV_MINIMAL < 2
1547	void	1696	void
1548	ev_loop_verify (EV_P)	1697	ev_loop_verify (EV_P)
1549	{	1698	{
1550	#if EV_VERIFY	1699	#if EV_VERIFY
1551	int i;	1700	int i;
…		…
1553		1702
1554	assert (activecnt >= -1);	1703	assert (activecnt >= -1);
1555		1704
1556	assert (fdchangemax >= fdchangecnt);	1705	assert (fdchangemax >= fdchangecnt);
1557	for (i = 0; i < fdchangecnt; ++i)	1706	for (i = 0; i < fdchangecnt; ++i)
1558	assert (("negative fd in fdchanges", fdchanges [i] >= 0));	1707	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1559		1708
1560	assert (anfdmax >= 0);	1709	assert (anfdmax >= 0);
1561	for (i = 0; i < anfdmax; ++i)	1710	for (i = 0; i < anfdmax; ++i)
1562	for (w = anfds [i].head; w; w = w->next)	1711	for (w = anfds [i].head; w; w = w->next)
1563	{	1712	{
1564	verify_watcher (EV_A_ (W)w);	1713	verify_watcher (EV_A_ (W)w);
1565	assert (("inactive fd watcher on anfd list", ev_active (w) == 1));	1714	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));	1715	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1567	}	1716	}
1568		1717
1569	assert (timermax >= timercnt);	1718	assert (timermax >= timercnt);
1570	verify_heap (EV_A_ timers, timercnt);	1719	verify_heap (EV_A_ timers, timercnt);
1571		1720
…		…
1604	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1753	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1605	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)	1754	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1606	# endif	1755	# endif
1607	#endif	1756	#endif
1608	}	1757	}
1609		1758	#endif
1610	#endif /* multiplicity */
1611		1759
1612	#if EV_MULTIPLICITY	1760	#if EV_MULTIPLICITY
1613	struct ev_loop *	1761	struct ev_loop *
1614	ev_default_loop_init (unsigned int flags)	1762	ev_default_loop_init (unsigned int flags)
1615	#else	1763	#else
…		…
1648	{	1796	{
1649	#if EV_MULTIPLICITY	1797	#if EV_MULTIPLICITY
1650	struct ev_loop *loop = ev_default_loop_ptr;	1798	struct ev_loop *loop = ev_default_loop_ptr;
1651	#endif	1799	#endif
1652		1800
		1801	ev_default_loop_ptr = 0;
		1802
1653	#ifndef _WIN32	1803	#ifndef _WIN32
1654	ev_ref (EV_A); /* child watcher */	1804	ev_ref (EV_A); /* child watcher */
1655	ev_signal_stop (EV_A_ &childev);	1805	ev_signal_stop (EV_A_ &childev);
1656	#endif	1806	#endif
1657		1807
…		…
1663	{	1813	{
1664	#if EV_MULTIPLICITY	1814	#if EV_MULTIPLICITY
1665	struct ev_loop *loop = ev_default_loop_ptr;	1815	struct ev_loop *loop = ev_default_loop_ptr;
1666	#endif	1816	#endif
1667		1817
1668	if (backend)
1669	postfork = 1; /* must be in line with ev_loop_fork */	1818	postfork = 1; /* must be in line with ev_loop_fork */
1670	}	1819	}
1671		1820
1672	/*****************************************************************************/	1821	/*****************************************************************************/
1673		1822
1674	void	1823	void
1675	ev_invoke (EV_P_ void *w, int revents)	1824	ev_invoke (EV_P_ void *w, int revents)
1676	{	1825	{
1677	EV_CB_INVOKE ((W)w, revents);	1826	EV_CB_INVOKE ((W)w, revents);
1678	}	1827	}
1679		1828
1680	void inline_speed	1829	void noinline
1681	call_pending (EV_P)	1830	ev_invoke_pending (EV_P)
1682	{	1831	{
1683	int pri;	1832	int pri;
1684		1833
1685	for (pri = NUMPRI; pri--; )	1834	for (pri = NUMPRI; pri--; )
1686	while (pendingcnt [pri])	1835	while (pendingcnt [pri])
1687	{	1836	{
1688	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1837	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1689		1838
1690	if (expect_true (p->w))
1691	{
1692	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1839	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1840	/* ^ this is no longer true, as pending_w could be here */
1693		1841
1694	p->w->pending = 0;	1842	p->w->pending = 0;
1695	EV_CB_INVOKE (p->w, p->events);	1843	EV_CB_INVOKE (p->w, p->events);
1696	EV_FREQUENT_CHECK;	1844	EV_FREQUENT_CHECK;
1697	}
1698	}	1845	}
1699	}	1846	}
1700		1847
1701	#if EV_IDLE_ENABLE	1848	#if EV_IDLE_ENABLE
1702	void inline_size	1849	/* make idle watchers pending. this handles the "call-idle */
		1850	/* only when higher priorities are idle" logic */
		1851	inline_size void
1703	idle_reify (EV_P)	1852	idle_reify (EV_P)
1704	{	1853	{
1705	if (expect_false (idleall))	1854	if (expect_false (idleall))
1706	{	1855	{
1707	int pri;	1856	int pri;
…		…
1719	}	1868	}
1720	}	1869	}
1721	}	1870	}
1722	#endif	1871	#endif
1723		1872
1724	void inline_size	1873	/* make timers pending */
		1874	inline_size void
1725	timers_reify (EV_P)	1875	timers_reify (EV_P)
1726	{	1876	{
1727	EV_FREQUENT_CHECK;	1877	EV_FREQUENT_CHECK;
1728		1878
1729	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	1879	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1730	{	1880	{
1731	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	1881	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	{	1882	{
		1883	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1884
		1885	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		1886
		1887	/* first reschedule or stop timer */
		1888	if (w->repeat)
		1889	{
1738	ev_at (w) += w->repeat;	1890	ev_at (w) += w->repeat;
1739	if (ev_at (w) < mn_now)	1891	if (ev_at (w) < mn_now)
1740	ev_at (w) = mn_now;	1892	ev_at (w) = mn_now;
1741		1893
1742	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1894	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1743		1895
1744	ANHE_at_cache (timers [HEAP0]);	1896	ANHE_at_cache (timers [HEAP0]);
1745	downheap (timers, timercnt, HEAP0);	1897	downheap (timers, timercnt, HEAP0);
		1898	}
		1899	else
		1900	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1901
		1902	EV_FREQUENT_CHECK;
		1903	feed_reverse (EV_A_ (W)w);
1746	}	1904	}
1747	else	1905	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1748	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1749		1906
1750	EV_FREQUENT_CHECK;
1751	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1907	feed_reverse_done (EV_A_ EV_TIMEOUT);
1752	}	1908	}
1753	}	1909	}
1754		1910
1755	#if EV_PERIODIC_ENABLE	1911	#if EV_PERIODIC_ENABLE
1756	void inline_size	1912	/* make periodics pending */
		1913	inline_size void
1757	periodics_reify (EV_P)	1914	periodics_reify (EV_P)
1758	{	1915	{
1759	EV_FREQUENT_CHECK;	1916	EV_FREQUENT_CHECK;
1760		1917
1761	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	1918	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1762	{	1919	{
1763	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	1920	int feed_count = 0;
1764		1921
1765	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	1922	do
1766
1767	/* first reschedule or stop timer */
1768	if (w->reschedule_cb)
1769	{	1923	{
		1924	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1925
		1926	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		1927
		1928	/* first reschedule or stop timer */
		1929	if (w->reschedule_cb)
		1930	{
1770	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1931	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1771		1932
1772	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));	1933	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1773		1934
1774	ANHE_at_cache (periodics [HEAP0]);	1935	ANHE_at_cache (periodics [HEAP0]);
1775	downheap (periodics, periodiccnt, HEAP0);	1936	downheap (periodics, periodiccnt, HEAP0);
		1937	}
		1938	else if (w->interval)
		1939	{
		1940	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1941	/* if next trigger time is not sufficiently in the future, put it there */
		1942	/* this might happen because of floating point inexactness */
		1943	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1944	{
		1945	ev_at (w) += w->interval;
		1946
		1947	/* if interval is unreasonably low we might still have a time in the past */
		1948	/* so correct this. this will make the periodic very inexact, but the user */
		1949	/* has effectively asked to get triggered more often than possible */
		1950	if (ev_at (w) < ev_rt_now)
		1951	ev_at (w) = ev_rt_now;
		1952	}
		1953
		1954	ANHE_at_cache (periodics [HEAP0]);
		1955	downheap (periodics, periodiccnt, HEAP0);
		1956	}
		1957	else
		1958	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1959
		1960	EV_FREQUENT_CHECK;
		1961	feed_reverse (EV_A_ (W)w);
1776	}	1962	}
1777	else if (w->interval)	1963	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		1964
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);	1965	feed_reverse_done (EV_A_ EV_PERIODIC);
1801	}	1966	}
1802	}	1967	}
1803		1968
		1969	/* simply recalculate all periodics */
		1970	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1804	static void noinline	1971	static void noinline
1805	periodics_reschedule (EV_P)	1972	periodics_reschedule (EV_P)
1806	{	1973	{
1807	int i;	1974	int i;
1808		1975
…		…
1821		1988
1822	reheap (periodics, periodiccnt);	1989	reheap (periodics, periodiccnt);
1823	}	1990	}
1824	#endif	1991	#endif
1825		1992
1826	void inline_speed	1993	/* adjust all timers by a given offset */
		1994	static void noinline
		1995	timers_reschedule (EV_P_ ev_tstamp adjust)
		1996	{
		1997	int i;
		1998
		1999	for (i = 0; i < timercnt; ++i)
		2000	{
		2001	ANHE *he = timers + i + HEAP0;
		2002	ANHE_w (*he)->at += adjust;
		2003	ANHE_at_cache (*he);
		2004	}
		2005	}
		2006
		2007	/* fetch new monotonic and realtime times from the kernel */
		2008	/* also detetc if there was a timejump, and act accordingly */
		2009	inline_speed void
1827	time_update (EV_P_ ev_tstamp max_block)	2010	time_update (EV_P_ ev_tstamp max_block)
1828	{	2011	{
1829	int i;
1830
1831	#if EV_USE_MONOTONIC	2012	#if EV_USE_MONOTONIC
1832	if (expect_true (have_monotonic))	2013	if (expect_true (have_monotonic))
1833	{	2014	{
		2015	int i;
1834	ev_tstamp odiff = rtmn_diff;	2016	ev_tstamp odiff = rtmn_diff;
1835		2017
1836	mn_now = get_clock ();	2018	mn_now = get_clock ();
1837		2019
1838	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2020	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1864	ev_rt_now = ev_time ();	2046	ev_rt_now = ev_time ();
1865	mn_now = get_clock ();	2047	mn_now = get_clock ();
1866	now_floor = mn_now;	2048	now_floor = mn_now;
1867	}	2049	}
1868		2050
		2051	/* no timer adjustment, as the monotonic clock doesn't jump */
		2052	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1869	# if EV_PERIODIC_ENABLE	2053	# if EV_PERIODIC_ENABLE
1870	periodics_reschedule (EV_A);	2054	periodics_reschedule (EV_A);
1871	# endif	2055	# endif
1872	/* no timer adjustment, as the monotonic clock doesn't jump */
1873	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1874	}	2056	}
1875	else	2057	else
1876	#endif	2058	#endif
1877	{	2059	{
1878	ev_rt_now = ev_time ();	2060	ev_rt_now = ev_time ();
1879		2061
1880	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2062	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1881	{	2063	{
		2064	/* adjust timers. this is easy, as the offset is the same for all of them */
		2065	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1882	#if EV_PERIODIC_ENABLE	2066	#if EV_PERIODIC_ENABLE
1883	periodics_reschedule (EV_A);	2067	periodics_reschedule (EV_A);
1884	#endif	2068	#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	}	2069	}
1893		2070
1894	mn_now = ev_rt_now;	2071	mn_now = ev_rt_now;
1895	}	2072	}
1896	}	2073	}
1897		2074
1898	void	2075	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)	2076	ev_loop (EV_P_ int flags)
1914	{	2077	{
		2078	#if EV_MINIMAL < 2
		2079	++loop_depth;
		2080	#endif
		2081
1915	loop_done = EVUNLOOP_CANCEL;	2082	loop_done = EVUNLOOP_CANCEL;
1916		2083
1917	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2084	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1918		2085
1919	do	2086	do
1920	{	2087	{
1921	#if EV_VERIFY >= 2	2088	#if EV_VERIFY >= 2
1922	ev_loop_verify (EV_A);	2089	ev_loop_verify (EV_A);
…		…
1935	/* we might have forked, so queue fork handlers */	2102	/* we might have forked, so queue fork handlers */
1936	if (expect_false (postfork))	2103	if (expect_false (postfork))
1937	if (forkcnt)	2104	if (forkcnt)
1938	{	2105	{
1939	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2106	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1940	call_pending (EV_A);	2107	EV_INVOKE_PENDING;
1941	}	2108	}
1942	#endif	2109	#endif
1943		2110
1944	/* queue prepare watchers (and execute them) */	2111	/* queue prepare watchers (and execute them) */
1945	if (expect_false (preparecnt))	2112	if (expect_false (preparecnt))
1946	{	2113	{
1947	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2114	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1948	call_pending (EV_A);	2115	EV_INVOKE_PENDING;
1949	}	2116	}
1950
1951	if (expect_false (!activecnt))
1952	break;
1953		2117
1954	/* we might have forked, so reify kernel state if necessary */	2118	/* we might have forked, so reify kernel state if necessary */
1955	if (expect_false (postfork))	2119	if (expect_false (postfork))
1956	loop_fork (EV_A);	2120	loop_fork (EV_A);
1957		2121
…		…
1963	ev_tstamp waittime = 0.;	2127	ev_tstamp waittime = 0.;
1964	ev_tstamp sleeptime = 0.;	2128	ev_tstamp sleeptime = 0.;
1965		2129
1966	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2130	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1967	{	2131	{
		2132	/* remember old timestamp for io_blocktime calculation */
		2133	ev_tstamp prev_mn_now = mn_now;
		2134
1968	/* update time to cancel out callback processing overhead */	2135	/* update time to cancel out callback processing overhead */
1969	time_update (EV_A_ 1e100);	2136	time_update (EV_A_ 1e100);
1970		2137
1971	waittime = MAX_BLOCKTIME;	2138	waittime = MAX_BLOCKTIME;
1972		2139
…		…
1982	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2149	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1983	if (waittime > to) waittime = to;	2150	if (waittime > to) waittime = to;
1984	}	2151	}
1985	#endif	2152	#endif
1986		2153
		2154	/* don't let timeouts decrease the waittime below timeout_blocktime */
1987	if (expect_false (waittime < timeout_blocktime))	2155	if (expect_false (waittime < timeout_blocktime))
1988	waittime = timeout_blocktime;	2156	waittime = timeout_blocktime;
1989		2157
1990	sleeptime = waittime - backend_fudge;	2158	/* extra check because io_blocktime is commonly 0 */
1991
1992	if (expect_true (sleeptime > io_blocktime))	2159	if (expect_false (io_blocktime))
1993	sleeptime = io_blocktime;
1994
1995	if (sleeptime)
1996	{	2160	{
		2161	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2162
		2163	if (sleeptime > waittime - backend_fudge)
		2164	sleeptime = waittime - backend_fudge;
		2165
		2166	if (expect_true (sleeptime > 0.))
		2167	{
1997	ev_sleep (sleeptime);	2168	ev_sleep (sleeptime);
1998	waittime -= sleeptime;	2169	waittime -= sleeptime;
		2170	}
1999	}	2171	}
2000	}	2172	}
2001		2173
		2174	#if EV_MINIMAL < 2
2002	++loop_count;	2175	++loop_count;
		2176	#endif
2003	backend_poll (EV_A_ waittime);	2177	backend_poll (EV_A_ waittime);
2004		2178
2005	/* update ev_rt_now, do magic */	2179	/* update ev_rt_now, do magic */
2006	time_update (EV_A_ waittime + sleeptime);	2180	time_update (EV_A_ waittime + sleeptime);
2007	}	2181	}
…		…
2019		2193
2020	/* queue check watchers, to be executed first */	2194	/* queue check watchers, to be executed first */
2021	if (expect_false (checkcnt))	2195	if (expect_false (checkcnt))
2022	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2196	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2023		2197
2024	call_pending (EV_A);	2198	EV_INVOKE_PENDING;
2025	}	2199	}
2026	while (expect_true (	2200	while (expect_true (
2027	activecnt	2201	activecnt
2028	&& !loop_done	2202	&& !loop_done
2029	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2203	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2030	));	2204	));
2031		2205
2032	if (loop_done == EVUNLOOP_ONE)	2206	if (loop_done == EVUNLOOP_ONE)
2033	loop_done = EVUNLOOP_CANCEL;	2207	loop_done = EVUNLOOP_CANCEL;
		2208
		2209	#if EV_MINIMAL < 2
		2210	--loop_depth;
		2211	#endif
2034	}	2212	}
2035		2213
2036	void	2214	void
2037	ev_unloop (EV_P_ int how)	2215	ev_unloop (EV_P_ int how)
2038	{	2216	{
2039	loop_done = how;	2217	loop_done = how;
2040	}	2218	}
2041		2219
		2220	void
		2221	ev_ref (EV_P)
		2222	{
		2223	++activecnt;
		2224	}
		2225
		2226	void
		2227	ev_unref (EV_P)
		2228	{
		2229	--activecnt;
		2230	}
		2231
		2232	void
		2233	ev_now_update (EV_P)
		2234	{
		2235	time_update (EV_A_ 1e100);
		2236	}
		2237
		2238	void
		2239	ev_suspend (EV_P)
		2240	{
		2241	ev_now_update (EV_A);
		2242	}
		2243
		2244	void
		2245	ev_resume (EV_P)
		2246	{
		2247	ev_tstamp mn_prev = mn_now;
		2248
		2249	ev_now_update (EV_A);
		2250	timers_reschedule (EV_A_ mn_now - mn_prev);
		2251	#if EV_PERIODIC_ENABLE
		2252	/* TODO: really do this? */
		2253	periodics_reschedule (EV_A);
		2254	#endif
		2255	}
		2256
2042	/*****************************************************************************/	2257	/*****************************************************************************/
		2258	/* singly-linked list management, used when the expected list length is short */
2043		2259
2044	void inline_size	2260	inline_size void
2045	wlist_add (WL *head, WL elem)	2261	wlist_add (WL *head, WL elem)
2046	{	2262	{
2047	elem->next = *head;	2263	elem->next = *head;
2048	*head = elem;	2264	*head = elem;
2049	}	2265	}
2050		2266
2051	void inline_size	2267	inline_size void
2052	wlist_del (WL *head, WL elem)	2268	wlist_del (WL *head, WL elem)
2053	{	2269	{
2054	while (*head)	2270	while (*head)
2055	{	2271	{
2056	if (*head == elem)	2272	if (*head == elem)
…		…
2061		2277
2062	head = &(*head)->next;	2278	head = &(*head)->next;
2063	}	2279	}
2064	}	2280	}
2065		2281
2066	void inline_speed	2282	/* internal, faster, version of ev_clear_pending */
		2283	inline_speed void
2067	clear_pending (EV_P_ W w)	2284	clear_pending (EV_P_ W w)
2068	{	2285	{
2069	if (w->pending)	2286	if (w->pending)
2070	{	2287	{
2071	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2288	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2072	w->pending = 0;	2289	w->pending = 0;
2073	}	2290	}
2074	}	2291	}
2075		2292
2076	int	2293	int
…		…
2080	int pending = w_->pending;	2297	int pending = w_->pending;
2081		2298
2082	if (expect_true (pending))	2299	if (expect_true (pending))
2083	{	2300	{
2084	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2301	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2302	p->w = (W)&pending_w;
2085	w_->pending = 0;	2303	w_->pending = 0;
2086	p->w = 0;
2087	return p->events;	2304	return p->events;
2088	}	2305	}
2089	else	2306	else
2090	return 0;	2307	return 0;
2091	}	2308	}
2092		2309
2093	void inline_size	2310	inline_size void
2094	pri_adjust (EV_P_ W w)	2311	pri_adjust (EV_P_ W w)
2095	{	2312	{
2096	int pri = w->priority;	2313	int pri = ev_priority (w);
2097	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2314	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2098	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2315	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2099	w->priority = pri;	2316	ev_set_priority (w, pri);
2100	}	2317	}
2101		2318
2102	void inline_speed	2319	inline_speed void
2103	ev_start (EV_P_ W w, int active)	2320	ev_start (EV_P_ W w, int active)
2104	{	2321	{
2105	pri_adjust (EV_A_ w);	2322	pri_adjust (EV_A_ w);
2106	w->active = active;	2323	w->active = active;
2107	ev_ref (EV_A);	2324	ev_ref (EV_A);
2108	}	2325	}
2109		2326
2110	void inline_size	2327	inline_size void
2111	ev_stop (EV_P_ W w)	2328	ev_stop (EV_P_ W w)
2112	{	2329	{
2113	ev_unref (EV_A);	2330	ev_unref (EV_A);
2114	w->active = 0;	2331	w->active = 0;
2115	}	2332	}
…		…
2122	int fd = w->fd;	2339	int fd = w->fd;
2123		2340
2124	if (expect_false (ev_is_active (w)))	2341	if (expect_false (ev_is_active (w)))
2125	return;	2342	return;
2126		2343
2127	assert (("ev_io_start called with negative fd", fd >= 0));	2344	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2345	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2128		2346
2129	EV_FREQUENT_CHECK;	2347	EV_FREQUENT_CHECK;
2130		2348
2131	ev_start (EV_A_ (W)w, 1);	2349	ev_start (EV_A_ (W)w, 1);
2132	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2350	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2133	wlist_add (&anfds[fd].head, (WL)w);	2351	wlist_add (&anfds[fd].head, (WL)w);
2134		2352
2135	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2353	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
2136	w->events &= ~EV_IOFDSET;	2354	w->events &= ~EV__IOFDSET;
2137		2355
2138	EV_FREQUENT_CHECK;	2356	EV_FREQUENT_CHECK;
2139	}	2357	}
2140		2358
2141	void noinline	2359	void noinline
…		…
2143	{	2361	{
2144	clear_pending (EV_A_ (W)w);	2362	clear_pending (EV_A_ (W)w);
2145	if (expect_false (!ev_is_active (w)))	2363	if (expect_false (!ev_is_active (w)))
2146	return;	2364	return;
2147		2365
2148	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2366	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2149		2367
2150	EV_FREQUENT_CHECK;	2368	EV_FREQUENT_CHECK;
2151		2369
2152	wlist_del (&anfds[w->fd].head, (WL)w);	2370	wlist_del (&anfds[w->fd].head, (WL)w);
2153	ev_stop (EV_A_ (W)w);	2371	ev_stop (EV_A_ (W)w);
…		…
2163	if (expect_false (ev_is_active (w)))	2381	if (expect_false (ev_is_active (w)))
2164	return;	2382	return;
2165		2383
2166	ev_at (w) += mn_now;	2384	ev_at (w) += mn_now;
2167		2385
2168	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2386	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2169		2387
2170	EV_FREQUENT_CHECK;	2388	EV_FREQUENT_CHECK;
2171		2389
2172	++timercnt;	2390	++timercnt;
2173	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);	2391	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
…		…
2176	ANHE_at_cache (timers [ev_active (w)]);	2394	ANHE_at_cache (timers [ev_active (w)]);
2177	upheap (timers, ev_active (w));	2395	upheap (timers, ev_active (w));
2178		2396
2179	EV_FREQUENT_CHECK;	2397	EV_FREQUENT_CHECK;
2180		2398
2181	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2399	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2182	}	2400	}
2183		2401
2184	void noinline	2402	void noinline
2185	ev_timer_stop (EV_P_ ev_timer *w)	2403	ev_timer_stop (EV_P_ ev_timer *w)
2186	{	2404	{
…		…
2191	EV_FREQUENT_CHECK;	2409	EV_FREQUENT_CHECK;
2192		2410
2193	{	2411	{
2194	int active = ev_active (w);	2412	int active = ev_active (w);
2195		2413
2196	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2414	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2197		2415
2198	--timercnt;	2416	--timercnt;
2199		2417
2200	if (expect_true (active < timercnt + HEAP0))	2418	if (expect_true (active < timercnt + HEAP0))
2201	{	2419	{
…		…
2245		2463
2246	if (w->reschedule_cb)	2464	if (w->reschedule_cb)
2247	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2465	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2248	else if (w->interval)	2466	else if (w->interval)
2249	{	2467	{
2250	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2468	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 */	2469	/* 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;	2470	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2253	}	2471	}
2254	else	2472	else
2255	ev_at (w) = w->offset;	2473	ev_at (w) = w->offset;
…		…
2263	ANHE_at_cache (periodics [ev_active (w)]);	2481	ANHE_at_cache (periodics [ev_active (w)]);
2264	upheap (periodics, ev_active (w));	2482	upheap (periodics, ev_active (w));
2265		2483
2266	EV_FREQUENT_CHECK;	2484	EV_FREQUENT_CHECK;
2267		2485
2268	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2486	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2269	}	2487	}
2270		2488
2271	void noinline	2489	void noinline
2272	ev_periodic_stop (EV_P_ ev_periodic *w)	2490	ev_periodic_stop (EV_P_ ev_periodic *w)
2273	{	2491	{
…		…
2278	EV_FREQUENT_CHECK;	2496	EV_FREQUENT_CHECK;
2279		2497
2280	{	2498	{
2281	int active = ev_active (w);	2499	int active = ev_active (w);
2282		2500
2283	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2501	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2284		2502
2285	--periodiccnt;	2503	--periodiccnt;
2286		2504
2287	if (expect_true (active < periodiccnt + HEAP0))	2505	if (expect_true (active < periodiccnt + HEAP0))
2288	{	2506	{
…		…
2311		2529
2312	void noinline	2530	void noinline
2313	ev_signal_start (EV_P_ ev_signal *w)	2531	ev_signal_start (EV_P_ ev_signal *w)
2314	{	2532	{
2315	#if EV_MULTIPLICITY	2533	#if EV_MULTIPLICITY
2316	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2534	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2317	#endif	2535	#endif
2318	if (expect_false (ev_is_active (w)))	2536	if (expect_false (ev_is_active (w)))
2319	return;	2537	return;
2320		2538
2321	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2539	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2322		2540
2323	evpipe_init (EV_A);	2541	evpipe_init (EV_A);
2324		2542
2325	EV_FREQUENT_CHECK;	2543	EV_FREQUENT_CHECK;
2326		2544
…		…
2329	sigset_t full, prev;	2547	sigset_t full, prev;
2330	sigfillset (&full);	2548	sigfillset (&full);
2331	sigprocmask (SIG_SETMASK, &full, &prev);	2549	sigprocmask (SIG_SETMASK, &full, &prev);
2332	#endif	2550	#endif
2333		2551
2334	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2552	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2335		2553
2336	#ifndef _WIN32	2554	#ifndef _WIN32
2337	sigprocmask (SIG_SETMASK, &prev, 0);	2555	sigprocmask (SIG_SETMASK, &prev, 0);
2338	#endif	2556	#endif
2339	}	2557	}
…		…
2377		2595
2378	void	2596	void
2379	ev_child_start (EV_P_ ev_child *w)	2597	ev_child_start (EV_P_ ev_child *w)
2380	{	2598	{
2381	#if EV_MULTIPLICITY	2599	#if EV_MULTIPLICITY
2382	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2600	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2383	#endif	2601	#endif
2384	if (expect_false (ev_is_active (w)))	2602	if (expect_false (ev_is_active (w)))
2385	return;	2603	return;
2386		2604
2387	EV_FREQUENT_CHECK;	2605	EV_FREQUENT_CHECK;
…		…
2412	# ifdef _WIN32	2630	# ifdef _WIN32
2413	# undef lstat	2631	# undef lstat
2414	# define lstat(a,b) _stati64 (a,b)	2632	# define lstat(a,b) _stati64 (a,b)
2415	# endif	2633	# endif
2416		2634
2417	#define DEF_STAT_INTERVAL 5.0074891	2635	#define DEF_STAT_INTERVAL 5.0074891
		2636	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2418	#define MIN_STAT_INTERVAL 0.1074891	2637	#define MIN_STAT_INTERVAL 0.1074891
2419		2638
2420	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2639	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2421		2640
2422	#if EV_USE_INOTIFY	2641	#if EV_USE_INOTIFY
2423	# define EV_INOTIFY_BUFSIZE 8192	2642	# define EV_INOTIFY_BUFSIZE 8192
…		…
2427	{	2646	{
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);	2647	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		2648
2430	if (w->wd < 0)	2649	if (w->wd < 0)
2431	{	2650	{
		2651	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 */	2652	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2433		2653
2434	/* monitor some parent directory for speedup hints */	2654	/* monitor some parent directory for speedup hints */
2435	/* note that exceeding the hardcoded limit is not a correctness issue, */	2655	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2436	/* but an efficiency issue only */	2656	/* but an efficiency issue only */
2437	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2657	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2438	{	2658	{
2439	char path [4096];	2659	char path [4096];
2440	strcpy (path, w->path);	2660	strcpy (path, w->path);
…		…
2444	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2664	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2445	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2665	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2446		2666
2447	char *pend = strrchr (path, '/');	2667	char *pend = strrchr (path, '/');
2448		2668
2449	if (!pend)	2669	if (!pend || pend == path)
2450	break; /* whoops, no '/', complain to your admin */	2670	break;
2451		2671
2452	*pend = 0;	2672	*pend = 0;
2453	w->wd = inotify_add_watch (fs_fd, path, mask);	2673	w->wd = inotify_add_watch (fs_fd, path, mask);
2454	}	2674	}
2455	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2675	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2456	}	2676	}
2457	}	2677	}
2458	else
2459	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2460		2678
2461	if (w->wd >= 0)	2679	if (w->wd >= 0)
		2680	{
2462	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2681	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2682
		2683	/* now local changes will be tracked by inotify, but remote changes won't */
		2684	/* unless the filesystem it known to be local, we therefore still poll */
		2685	/* also do poll on <2.6.25, but with normal frequency */
		2686	struct statfs sfs;
		2687
		2688	if (fs_2625 && !statfs (w->path, &sfs))
		2689	if (sfs.f_type == 0x1373 /* devfs */
		2690	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2691	|| sfs.f_type == 0x3153464a /* jfs */
		2692	|| sfs.f_type == 0x52654973 /* reiser3 */
		2693	|| sfs.f_type == 0x01021994 /* tempfs */
		2694	|| sfs.f_type == 0x58465342 /* xfs */)
		2695	return;
		2696
		2697	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2698	ev_timer_again (EV_A_ &w->timer);
		2699	}
2463	}	2700	}
2464		2701
2465	static void noinline	2702	static void noinline
2466	infy_del (EV_P_ ev_stat *w)	2703	infy_del (EV_P_ ev_stat *w)
2467	{	2704	{
…		…
2481		2718
2482	static void noinline	2719	static void noinline
2483	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2720	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2484	{	2721	{
2485	if (slot < 0)	2722	if (slot < 0)
2486	/* overflow, need to check for all hahs slots */	2723	/* overflow, need to check for all hash slots */
2487	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2724	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2488	infy_wd (EV_A_ slot, wd, ev);	2725	infy_wd (EV_A_ slot, wd, ev);
2489	else	2726	else
2490	{	2727	{
2491	WL w_;	2728	WL w_;
…		…
2497		2734
2498	if (w->wd == wd || wd == -1)	2735	if (w->wd == wd || wd == -1)
2499	{	2736	{
2500	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2737	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2501	{	2738	{
		2739	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2502	w->wd = -1;	2740	w->wd = -1;
2503	infy_add (EV_A_ w); /* re-add, no matter what */	2741	infy_add (EV_A_ w); /* re-add, no matter what */
2504	}	2742	}
2505		2743
2506	stat_timer_cb (EV_A_ &w->timer, 0);	2744	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2519		2757
2520	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2758	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2521	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2759	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2522	}	2760	}
2523		2761
2524	void inline_size	2762	inline_size void
		2763	check_2625 (EV_P)
		2764	{
		2765	/* kernels < 2.6.25 are borked
		2766	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2767	*/
		2768	struct utsname buf;
		2769	int major, minor, micro;
		2770
		2771	if (uname (&buf))
		2772	return;
		2773
		2774	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2775	return;
		2776
		2777	if (major < 2
		2778	|| (major == 2 && minor < 6)
		2779	|| (major == 2 && minor == 6 && micro < 25))
		2780	return;
		2781
		2782	fs_2625 = 1;
		2783	}
		2784
		2785	inline_size void
2525	infy_init (EV_P)	2786	infy_init (EV_P)
2526	{	2787	{
2527	if (fs_fd != -2)	2788	if (fs_fd != -2)
2528	return;	2789	return;
		2790
		2791	fs_fd = -1;
		2792
		2793	check_2625 (EV_A);
2529		2794
2530	fs_fd = inotify_init ();	2795	fs_fd = inotify_init ();
2531		2796
2532	if (fs_fd >= 0)	2797	if (fs_fd >= 0)
2533	{	2798	{
…		…
2535	ev_set_priority (&fs_w, EV_MAXPRI);	2800	ev_set_priority (&fs_w, EV_MAXPRI);
2536	ev_io_start (EV_A_ &fs_w);	2801	ev_io_start (EV_A_ &fs_w);
2537	}	2802	}
2538	}	2803	}
2539		2804
2540	void inline_size	2805	inline_size void
2541	infy_fork (EV_P)	2806	infy_fork (EV_P)
2542	{	2807	{
2543	int slot;	2808	int slot;
2544		2809
2545	if (fs_fd < 0)	2810	if (fs_fd < 0)
…		…
2561	w->wd = -1;	2826	w->wd = -1;
2562		2827
2563	if (fs_fd >= 0)	2828	if (fs_fd >= 0)
2564	infy_add (EV_A_ w); /* re-add, no matter what */	2829	infy_add (EV_A_ w); /* re-add, no matter what */
2565	else	2830	else
2566	ev_timer_start (EV_A_ &w->timer);	2831	ev_timer_again (EV_A_ &w->timer);
2567	}	2832	}
2568
2569	}	2833	}
2570	}	2834	}
2571		2835
		2836	#endif
		2837
		2838	#ifdef _WIN32
		2839	# define EV_LSTAT(p,b) _stati64 (p, b)
		2840	#else
		2841	# define EV_LSTAT(p,b) lstat (p, b)
2572	#endif	2842	#endif
2573		2843
2574	void	2844	void
2575	ev_stat_stat (EV_P_ ev_stat *w)	2845	ev_stat_stat (EV_P_ ev_stat *w)
2576	{	2846	{
…		…
2603	|| w->prev.st_atime != w->attr.st_atime	2873	|| w->prev.st_atime != w->attr.st_atime
2604	|| w->prev.st_mtime != w->attr.st_mtime	2874	|| w->prev.st_mtime != w->attr.st_mtime
2605	|| w->prev.st_ctime != w->attr.st_ctime	2875	|| w->prev.st_ctime != w->attr.st_ctime
2606	) {	2876	) {
2607	#if EV_USE_INOTIFY	2877	#if EV_USE_INOTIFY
		2878	if (fs_fd >= 0)
		2879	{
2608	infy_del (EV_A_ w);	2880	infy_del (EV_A_ w);
2609	infy_add (EV_A_ w);	2881	infy_add (EV_A_ w);
2610	ev_stat_stat (EV_A_ w); /* avoid race... */	2882	ev_stat_stat (EV_A_ w); /* avoid race... */
		2883	}
2611	#endif	2884	#endif
2612		2885
2613	ev_feed_event (EV_A_ w, EV_STAT);	2886	ev_feed_event (EV_A_ w, EV_STAT);
2614	}	2887	}
2615	}	2888	}
…		…
2618	ev_stat_start (EV_P_ ev_stat *w)	2891	ev_stat_start (EV_P_ ev_stat *w)
2619	{	2892	{
2620	if (expect_false (ev_is_active (w)))	2893	if (expect_false (ev_is_active (w)))
2621	return;	2894	return;
2622		2895
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);	2896	ev_stat_stat (EV_A_ w);
2628		2897
		2898	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2629	if (w->interval < MIN_STAT_INTERVAL)	2899	w->interval = MIN_STAT_INTERVAL;
2630	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2631		2900
2632	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2901	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));	2902	ev_set_priority (&w->timer, ev_priority (w));
2634		2903
2635	#if EV_USE_INOTIFY	2904	#if EV_USE_INOTIFY
2636	infy_init (EV_A);	2905	infy_init (EV_A);
2637		2906
2638	if (fs_fd >= 0)	2907	if (fs_fd >= 0)
2639	infy_add (EV_A_ w);	2908	infy_add (EV_A_ w);
2640	else	2909	else
2641	#endif	2910	#endif
2642	ev_timer_start (EV_A_ &w->timer);	2911	ev_timer_again (EV_A_ &w->timer);
2643		2912
2644	ev_start (EV_A_ (W)w, 1);	2913	ev_start (EV_A_ (W)w, 1);
2645		2914
2646	EV_FREQUENT_CHECK;	2915	EV_FREQUENT_CHECK;
2647	}	2916	}
…		…
2817	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3086	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2818	}	3087	}
2819	}	3088	}
2820	}	3089	}
2821		3090
		3091	static void
		3092	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3093	{
		3094	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3095
		3096	ev_embed_stop (EV_A_ w);
		3097
		3098	{
		3099	struct ev_loop *loop = w->other;
		3100
		3101	ev_loop_fork (EV_A);
		3102	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3103	}
		3104
		3105	ev_embed_start (EV_A_ w);
		3106	}
		3107
2822	#if 0	3108	#if 0
2823	static void	3109	static void
2824	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3110	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2825	{	3111	{
2826	ev_idle_stop (EV_A_ idle);	3112	ev_idle_stop (EV_A_ idle);
…		…
2833	if (expect_false (ev_is_active (w)))	3119	if (expect_false (ev_is_active (w)))
2834	return;	3120	return;
2835		3121
2836	{	3122	{
2837	struct ev_loop *loop = w->other;	3123	struct ev_loop *loop = w->other;
2838	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3124	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);	3125	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2840	}	3126	}
2841		3127
2842	EV_FREQUENT_CHECK;	3128	EV_FREQUENT_CHECK;
2843		3129
…		…
2846		3132
2847	ev_prepare_init (&w->prepare, embed_prepare_cb);	3133	ev_prepare_init (&w->prepare, embed_prepare_cb);
2848	ev_set_priority (&w->prepare, EV_MINPRI);	3134	ev_set_priority (&w->prepare, EV_MINPRI);
2849	ev_prepare_start (EV_A_ &w->prepare);	3135	ev_prepare_start (EV_A_ &w->prepare);
2850		3136
		3137	ev_fork_init (&w->fork, embed_fork_cb);
		3138	ev_fork_start (EV_A_ &w->fork);
		3139
2851	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3140	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2852		3141
2853	ev_start (EV_A_ (W)w, 1);	3142	ev_start (EV_A_ (W)w, 1);
2854		3143
2855	EV_FREQUENT_CHECK;	3144	EV_FREQUENT_CHECK;
…		…
2862	if (expect_false (!ev_is_active (w)))	3151	if (expect_false (!ev_is_active (w)))
2863	return;	3152	return;
2864		3153
2865	EV_FREQUENT_CHECK;	3154	EV_FREQUENT_CHECK;
2866		3155
2867	ev_io_stop (EV_A_ &w->io);	3156	ev_io_stop (EV_A_ &w->io);
2868	ev_prepare_stop (EV_A_ &w->prepare);	3157	ev_prepare_stop (EV_A_ &w->prepare);
2869		3158	ev_fork_stop (EV_A_ &w->fork);
2870	ev_stop (EV_A_ (W)w);
2871		3159
2872	EV_FREQUENT_CHECK;	3160	EV_FREQUENT_CHECK;
2873	}	3161	}
2874	#endif	3162	#endif
2875		3163
…		…
2972	once_cb (EV_P_ struct ev_once *once, int revents)	3260	once_cb (EV_P_ struct ev_once *once, int revents)
2973	{	3261	{
2974	void (*cb)(int revents, void *arg) = once->cb;	3262	void (*cb)(int revents, void *arg) = once->cb;
2975	void *arg = once->arg;	3263	void *arg = once->arg;
2976		3264
2977	ev_io_stop (EV_A_ &once->io);	3265	ev_io_stop (EV_A_ &once->io);
2978	ev_timer_stop (EV_A_ &once->to);	3266	ev_timer_stop (EV_A_ &once->to);
2979	ev_free (once);	3267	ev_free (once);
2980		3268
2981	cb (revents, arg);	3269	cb (revents, arg);
2982	}	3270	}
2983		3271
2984	static void	3272	static void
2985	once_cb_io (EV_P_ ev_io *w, int revents)	3273	once_cb_io (EV_P_ ev_io *w, int revents)
2986	{	3274	{
2987	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3275	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3276
		3277	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2988	}	3278	}
2989		3279
2990	static void	3280	static void
2991	once_cb_to (EV_P_ ev_timer *w, int revents)	3281	once_cb_to (EV_P_ ev_timer *w, int revents)
2992	{	3282	{
2993	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3283	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3284
		3285	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2994	}	3286	}
2995		3287
2996	void	3288	void
2997	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3289	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2998	{	3290	{
…		…
3020	ev_timer_set (&once->to, timeout, 0.);	3312	ev_timer_set (&once->to, timeout, 0.);
3021	ev_timer_start (EV_A_ &once->to);	3313	ev_timer_start (EV_A_ &once->to);
3022	}	3314	}
3023	}	3315	}
3024		3316
		3317	/*****************************************************************************/
		3318
		3319	#if EV_WALK_ENABLE
		3320	void
		3321	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3322	{
		3323	int i, j;
		3324	ev_watcher_list *wl, *wn;
		3325
		3326	if (types & (EV_IO | EV_EMBED))
		3327	for (i = 0; i < anfdmax; ++i)
		3328	for (wl = anfds [i].head; wl; )
		3329	{
		3330	wn = wl->next;
		3331
		3332	#if EV_EMBED_ENABLE
		3333	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3334	{
		3335	if (types & EV_EMBED)
		3336	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3337	}
		3338	else
		3339	#endif
		3340	#if EV_USE_INOTIFY
		3341	if (ev_cb ((ev_io *)wl) == infy_cb)
		3342	;
		3343	else
		3344	#endif
		3345	if ((ev_io *)wl != &pipe_w)
		3346	if (types & EV_IO)
		3347	cb (EV_A_ EV_IO, wl);
		3348
		3349	wl = wn;
		3350	}
		3351
		3352	if (types & (EV_TIMER | EV_STAT))
		3353	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3354	#if EV_STAT_ENABLE
		3355	/*TODO: timer is not always active*/
		3356	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3357	{
		3358	if (types & EV_STAT)
		3359	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3360	}
		3361	else
		3362	#endif
		3363	if (types & EV_TIMER)
		3364	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3365
		3366	#if EV_PERIODIC_ENABLE
		3367	if (types & EV_PERIODIC)
		3368	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3369	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3370	#endif
		3371
		3372	#if EV_IDLE_ENABLE
		3373	if (types & EV_IDLE)
		3374	for (j = NUMPRI; i--; )
		3375	for (i = idlecnt [j]; i--; )
		3376	cb (EV_A_ EV_IDLE, idles [j][i]);
		3377	#endif
		3378
		3379	#if EV_FORK_ENABLE
		3380	if (types & EV_FORK)
		3381	for (i = forkcnt; i--; )
		3382	if (ev_cb (forks [i]) != embed_fork_cb)
		3383	cb (EV_A_ EV_FORK, forks [i]);
		3384	#endif
		3385
		3386	#if EV_ASYNC_ENABLE
		3387	if (types & EV_ASYNC)
		3388	for (i = asynccnt; i--; )
		3389	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3390	#endif
		3391
		3392	if (types & EV_PREPARE)
		3393	for (i = preparecnt; i--; )
		3394	#if EV_EMBED_ENABLE
		3395	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3396	#endif
		3397	cb (EV_A_ EV_PREPARE, prepares [i]);
		3398
		3399	if (types & EV_CHECK)
		3400	for (i = checkcnt; i--; )
		3401	cb (EV_A_ EV_CHECK, checks [i]);
		3402
		3403	if (types & EV_SIGNAL)
		3404	for (i = 0; i < signalmax; ++i)
		3405	for (wl = signals [i].head; wl; )
		3406	{
		3407	wn = wl->next;
		3408	cb (EV_A_ EV_SIGNAL, wl);
		3409	wl = wn;
		3410	}
		3411
		3412	if (types & EV_CHILD)
		3413	for (i = EV_PID_HASHSIZE; i--; )
		3414	for (wl = childs [i]; wl; )
		3415	{
		3416	wn = wl->next;
		3417	cb (EV_A_ EV_CHILD, wl);
		3418	wl = wn;
		3419	}
		3420	/* EV_STAT 0x00001000 /* stat data changed */
		3421	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3422	}
		3423	#endif
		3424
3025	#if EV_MULTIPLICITY	3425	#if EV_MULTIPLICITY
3026	#include "ev_wrap.h"	3426	#include "ev_wrap.h"
3027	#endif	3427	#endif
3028		3428
3029	#ifdef __cplusplus	3429	#ifdef __cplusplus

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