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Comparing libev/ev.c (file contents):
Revision 1.236 by root, Wed May 7 14:46:22 2008 UTC vs.
Revision 1.295 by root, Wed Jul 8 04:29:31 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
…		…
126	# define EV_USE_EVENTFD 1	140	# define EV_USE_EVENTFD 1
127	# else	141	# else
128	# define EV_USE_EVENTFD 0	142	# define EV_USE_EVENTFD 0
129	# endif	143	# endif
130	# endif	144	# endif
131		145
132	#endif	146	#endif
133		147
134	#include <math.h>	148	#include <math.h>
135	#include <stdlib.h>	149	#include <stdlib.h>
136	#include <fcntl.h>	150	#include <fcntl.h>
…		…
154	#ifndef _WIN32	168	#ifndef _WIN32
155	# include <sys/time.h>	169	# include <sys/time.h>
156	# include <sys/wait.h>	170	# include <sys/wait.h>
157	# include <unistd.h>	171	# include <unistd.h>
158	#else	172	#else
		173	# include <io.h>
159	# define WIN32_LEAN_AND_MEAN	174	# define WIN32_LEAN_AND_MEAN
160	# include <windows.h>	175	# include <windows.h>
161	# ifndef EV_SELECT_IS_WINSOCKET	176	# ifndef EV_SELECT_IS_WINSOCKET
162	# define EV_SELECT_IS_WINSOCKET 1	177	# define EV_SELECT_IS_WINSOCKET 1
163	# endif	178	# endif
164	#endif	179	#endif
165		180
166	/* this block tries to deduce configuration from header-defined symbols and defaults */	181	/* this block tries to deduce configuration from header-defined symbols and defaults */
167		182
		183	#ifndef EV_USE_CLOCK_SYSCALL
		184	# if __linux && __GLIBC__ >= 2
		185	# define EV_USE_CLOCK_SYSCALL 1
		186	# else
		187	# define EV_USE_CLOCK_SYSCALL 0
		188	# endif
		189	#endif
		190
168	#ifndef EV_USE_MONOTONIC	191	#ifndef EV_USE_MONOTONIC
		192	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
		193	# define EV_USE_MONOTONIC 1
		194	# else
169	# define EV_USE_MONOTONIC 0	195	# define EV_USE_MONOTONIC 0
		196	# endif
170	#endif	197	#endif
171		198
172	#ifndef EV_USE_REALTIME	199	#ifndef EV_USE_REALTIME
173	# define EV_USE_REALTIME 0	200	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174	#endif	201	#endif
175		202
176	#ifndef EV_USE_NANOSLEEP	203	#ifndef EV_USE_NANOSLEEP
		204	# if _POSIX_C_SOURCE >= 199309L
		205	# define EV_USE_NANOSLEEP 1
		206	# else
177	# define EV_USE_NANOSLEEP 0	207	# define EV_USE_NANOSLEEP 0
		208	# endif
178	#endif	209	#endif
179		210
180	#ifndef EV_USE_SELECT	211	#ifndef EV_USE_SELECT
181	# define EV_USE_SELECT 1	212	# define EV_USE_SELECT 1
182	#endif	213	#endif
…		…
235	# else	266	# else
236	# define EV_USE_EVENTFD 0	267	# define EV_USE_EVENTFD 0
237	# endif	268	# endif
238	#endif	269	#endif
239		270
		271	#if 0 /* debugging */
		272	# define EV_VERIFY 3
		273	# define EV_USE_4HEAP 1
		274	# define EV_HEAP_CACHE_AT 1
		275	#endif
		276
		277	#ifndef EV_VERIFY
		278	# define EV_VERIFY !EV_MINIMAL
		279	#endif
		280
		281	#ifndef EV_USE_4HEAP
		282	# define EV_USE_4HEAP !EV_MINIMAL
		283	#endif
		284
		285	#ifndef EV_HEAP_CACHE_AT
		286	# define EV_HEAP_CACHE_AT !EV_MINIMAL
		287	#endif
		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
240	/* 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 */
241		304
242	#ifndef CLOCK_MONOTONIC	305	#ifndef CLOCK_MONOTONIC
243	# undef EV_USE_MONOTONIC	306	# undef EV_USE_MONOTONIC
244	# define EV_USE_MONOTONIC 0	307	# define EV_USE_MONOTONIC 0
…		…
259	# include <sys/select.h>	322	# include <sys/select.h>
260	# endif	323	# endif
261	#endif	324	#endif
262		325
263	#if EV_USE_INOTIFY	326	#if EV_USE_INOTIFY
		327	# include <sys/utsname.h>
		328	# include <sys/statfs.h>
264	# 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
265	#endif	335	#endif
266		336
267	#if EV_SELECT_IS_WINSOCKET	337	#if EV_SELECT_IS_WINSOCKET
268	# include <winsock.h>	338	# include <winsock.h>
269	#endif	339	#endif
…		…
279	}	349	}
280	# endif	350	# endif
281	#endif	351	#endif
282		352
283	/**/	353	/**/
		354
		355	#if EV_VERIFY >= 3
		356	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
		357	#else
		358	# define EV_FREQUENT_CHECK do { } while (0)
		359	#endif
284		360
285	/*	361	/*
286	* This is used to avoid floating point rounding problems.	362	* This is used to avoid floating point rounding problems.
287	* It is added to ev_rt_now when scheduling periodics	363	* It is added to ev_rt_now when scheduling periodics
288	* to ensure progress, time-wise, even when rounding	364	* to ensure progress, time-wise, even when rounding
…		…
315	# define inline_speed static noinline	391	# define inline_speed static noinline
316	#else	392	#else
317	# define inline_speed static inline	393	# define inline_speed static inline
318	#endif	394	#endif
319		395
320	#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
321	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	401	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		402	#endif
322		403
323	#define EMPTY /* required for microsofts broken pseudo-c compiler */	404	#define EMPTY /* required for microsofts broken pseudo-c compiler */
324	#define EMPTY2(a,b) /* used to suppress some warnings */	405	#define EMPTY2(a,b) /* used to suppress some warnings */
325		406
326	typedef ev_watcher *W;	407	typedef ev_watcher *W;
…		…
328	typedef ev_watcher_time *WT;	409	typedef ev_watcher_time *WT;
329		410
330	#define ev_active(w) ((W)(w))->active	411	#define ev_active(w) ((W)(w))->active
331	#define ev_at(w) ((WT)(w))->at	412	#define ev_at(w) ((WT)(w))->at
332		413
333	#if EV_USE_MONOTONIC	414	#if EV_USE_REALTIME
334	/* 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 */
335	/* 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
336	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? */
337	#endif	422	#endif
338		423
339	#ifdef _WIN32	424	#ifdef _WIN32
340	# include "ev_win32.c"	425	# include "ev_win32.c"
…		…
349	{	434	{
350	syserr_cb = cb;	435	syserr_cb = cb;
351	}	436	}
352		437
353	static void noinline	438	static void noinline
354	syserr (const char *msg)	439	ev_syserr (const char *msg)
355	{	440	{
356	if (!msg)	441	if (!msg)
357	msg = "(libev) system error";	442	msg = "(libev) system error";
358		443
359	if (syserr_cb)	444	if (syserr_cb)
…		…
405	#define ev_malloc(size) ev_realloc (0, (size))	490	#define ev_malloc(size) ev_realloc (0, (size))
406	#define ev_free(ptr) ev_realloc ((ptr), 0)	491	#define ev_free(ptr) ev_realloc ((ptr), 0)
407		492
408	/*****************************************************************************/	493	/*****************************************************************************/
409		494
		495	/* file descriptor info structure */
410	typedef struct	496	typedef struct
411	{	497	{
412	WL head;	498	WL head;
413	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 */
414	unsigned char reify;	502	unsigned char unused;
		503	#if EV_USE_EPOLL
		504	unsigned int egen; /* generation counter to counter epoll bugs */
		505	#endif
415	#if EV_SELECT_IS_WINSOCKET	506	#if EV_SELECT_IS_WINSOCKET
416	SOCKET handle;	507	SOCKET handle;
417	#endif	508	#endif
418	} ANFD;	509	} ANFD;
419		510
		511	/* stores the pending event set for a given watcher */
420	typedef struct	512	typedef struct
421	{	513	{
422	W w;	514	W w;
423	int events;	515	int events; /* the pending event set for the given watcher */
424	} ANPENDING;	516	} ANPENDING;
425		517
426	#if EV_USE_INOTIFY	518	#if EV_USE_INOTIFY
		519	/* hash table entry per inotify-id */
427	typedef struct	520	typedef struct
428	{	521	{
429	WL head;	522	WL head;
430	} ANFS;	523	} ANFS;
		524	#endif
		525
		526	/* Heap Entry */
		527	#if EV_HEAP_CACHE_AT
		528	/* a heap element */
		529	typedef struct {
		530	ev_tstamp at;
		531	WT w;
		532	} ANHE;
		533
		534	#define ANHE_w(he) (he).w /* access watcher, read-write */
		535	#define ANHE_at(he) (he).at /* access cached at, read-only */
		536	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
		537	#else
		538	/* a heap element */
		539	typedef WT ANHE;
		540
		541	#define ANHE_w(he) (he)
		542	#define ANHE_at(he) (he)->at
		543	#define ANHE_at_cache(he)
431	#endif	544	#endif
432		545
433	#if EV_MULTIPLICITY	546	#if EV_MULTIPLICITY
434		547
435	struct ev_loop	548	struct ev_loop
…		…
456		569
457	#endif	570	#endif
458		571
459	/*****************************************************************************/	572	/*****************************************************************************/
460		573
		574	#ifndef EV_HAVE_EV_TIME
461	ev_tstamp	575	ev_tstamp
462	ev_time (void)	576	ev_time (void)
463	{	577	{
464	#if EV_USE_REALTIME	578	#if EV_USE_REALTIME
		579	if (expect_true (have_realtime))
		580	{
465	struct timespec ts;	581	struct timespec ts;
466	clock_gettime (CLOCK_REALTIME, &ts);	582	clock_gettime (CLOCK_REALTIME, &ts);
467	return ts.tv_sec + ts.tv_nsec * 1e-9;	583	return ts.tv_sec + ts.tv_nsec * 1e-9;
468	#else	584	}
		585	#endif
		586
469	struct timeval tv;	587	struct timeval tv;
470	gettimeofday (&tv, 0);	588	gettimeofday (&tv, 0);
471	return tv.tv_sec + tv.tv_usec * 1e-6;	589	return tv.tv_sec + tv.tv_usec * 1e-6;
472	#endif
473	}	590	}
		591	#endif
474		592
475	ev_tstamp inline_size	593	inline_size ev_tstamp
476	get_clock (void)	594	get_clock (void)
477	{	595	{
478	#if EV_USE_MONOTONIC	596	#if EV_USE_MONOTONIC
479	if (expect_true (have_monotonic))	597	if (expect_true (have_monotonic))
480	{	598	{
…		…
513	struct timeval tv;	631	struct timeval tv;
514		632
515	tv.tv_sec = (time_t)delay;	633	tv.tv_sec = (time_t)delay;
516	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	634	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
517		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 */
518	select (0, 0, 0, 0, &tv);	639	select (0, 0, 0, 0, &tv);
519	#endif	640	#endif
520	}	641	}
521	}	642	}
522		643
523	/*****************************************************************************/	644	/*****************************************************************************/
524		645
525	#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 */
526		647
527	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
528	array_nextsize (int elem, int cur, int cnt)	651	array_nextsize (int elem, int cur, int cnt)
529	{	652	{
530	int ncur = cur + 1;	653	int ncur = cur + 1;
531		654
532	do	655	do
…		…
549	array_realloc (int elem, void *base, int *cur, int cnt)	672	array_realloc (int elem, void *base, int *cur, int cnt)
550	{	673	{
551	*cur = array_nextsize (elem, *cur, cnt);	674	*cur = array_nextsize (elem, *cur, cnt);
552	return ev_realloc (base, elem * *cur);	675	return ev_realloc (base, elem * *cur);
553	}	676	}
		677
		678	#define array_init_zero(base,count) \
		679	memset ((void *)(base), 0, sizeof (*(base)) * (count))
554		680
555	#define array_needsize(type,base,cur,cnt,init) \	681	#define array_needsize(type,base,cur,cnt,init) \
556	if (expect_false ((cnt) > (cur))) \	682	if (expect_false ((cnt) > (cur))) \
557	{ \	683	{ \
558	int ocur_ = (cur); \	684	int ocur_ = (cur); \
…		…
570	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	696	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
571	}	697	}
572	#endif	698	#endif
573		699
574	#define array_free(stem, idx) \	700	#define array_free(stem, idx) \
575	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
576		702
577	/*****************************************************************************/	703	/*****************************************************************************/
		704
		705	/* dummy callback for pending events */
		706	static void noinline
		707	pendingcb (EV_P_ ev_prepare *w, int revents)
		708	{
		709	}
578		710
579	void noinline	711	void noinline
580	ev_feed_event (EV_P_ void *w, int revents)	712	ev_feed_event (EV_P_ void *w, int revents)
581	{	713	{
582	W w_ = (W)w;	714	W w_ = (W)w;
…		…
591	pendings [pri][w_->pending - 1].w = w_;	723	pendings [pri][w_->pending - 1].w = w_;
592	pendings [pri][w_->pending - 1].events = revents;	724	pendings [pri][w_->pending - 1].events = revents;
593	}	725	}
594	}	726	}
595		727
596	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
597	queue_events (EV_P_ W *events, int eventcnt, int type)	744	queue_events (EV_P_ W *events, int eventcnt, int type)
598	{	745	{
599	int i;	746	int i;
600		747
601	for (i = 0; i < eventcnt; ++i)	748	for (i = 0; i < eventcnt; ++i)
602	ev_feed_event (EV_A_ events [i], type);	749	ev_feed_event (EV_A_ events [i], type);
603	}	750	}
604		751
605	/*****************************************************************************/	752	/*****************************************************************************/
606		753
607	void inline_size	754	inline_speed void
608	anfds_init (ANFD *base, int count)
609	{
610	while (count--)
611	{
612	base->head = 0;
613	base->events = EV_NONE;
614	base->reify = 0;
615
616	++base;
617	}
618	}
619
620	void inline_speed
621	fd_event (EV_P_ int fd, int revents)	755	fd_event (EV_P_ int fd, int revents)
622	{	756	{
623	ANFD *anfd = anfds + fd;	757	ANFD *anfd = anfds + fd;
624	ev_io *w;	758	ev_io *w;
625		759
…		…
637	{	771	{
638	if (fd >= 0 && fd < anfdmax)	772	if (fd >= 0 && fd < anfdmax)
639	fd_event (EV_A_ fd, revents);	773	fd_event (EV_A_ fd, revents);
640	}	774	}
641		775
642	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
643	fd_reify (EV_P)	779	fd_reify (EV_P)
644	{	780	{
645	int i;	781	int i;
646		782
647	for (i = 0; i < fdchangecnt; ++i)	783	for (i = 0; i < fdchangecnt; ++i)
…		…
656	events |= (unsigned char)w->events;	792	events |= (unsigned char)w->events;
657		793
658	#if EV_SELECT_IS_WINSOCKET	794	#if EV_SELECT_IS_WINSOCKET
659	if (events)	795	if (events)
660	{	796	{
661	unsigned long argp;	797	unsigned long arg;
662	#ifdef EV_FD_TO_WIN32_HANDLE	798	#ifdef EV_FD_TO_WIN32_HANDLE
663	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	799	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
664	#else	800	#else
665	anfd->handle = _get_osfhandle (fd);	801	anfd->handle = _get_osfhandle (fd);
666	#endif	802	#endif
667	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));
668	}	804	}
669	#endif	805	#endif
670		806
671	{	807	{
672	unsigned char o_events = anfd->events;	808	unsigned char o_events = anfd->events;
673	unsigned char o_reify = anfd->reify;	809	unsigned char o_reify = anfd->reify;
674		810
675	anfd->reify = 0;	811	anfd->reify = 0;
676	anfd->events = events;	812	anfd->events = events;
677		813
678	if (o_events != events || o_reify & EV_IOFDSET)	814	if (o_events != events || o_reify & EV__IOFDSET)
679	backend_modify (EV_A_ fd, o_events, events);	815	backend_modify (EV_A_ fd, o_events, events);
680	}	816	}
681	}	817	}
682		818
683	fdchangecnt = 0;	819	fdchangecnt = 0;
684	}	820	}
685		821
686	void inline_size	822	/* something about the given fd changed */
		823	inline_size void
687	fd_change (EV_P_ int fd, int flags)	824	fd_change (EV_P_ int fd, int flags)
688	{	825	{
689	unsigned char reify = anfds [fd].reify;	826	unsigned char reify = anfds [fd].reify;
690	anfds [fd].reify |= flags;	827	anfds [fd].reify |= flags;
691		828
…		…
695	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	832	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
696	fdchanges [fdchangecnt - 1] = fd;	833	fdchanges [fdchangecnt - 1] = fd;
697	}	834	}
698	}	835	}
699		836
700	void inline_speed	837	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		838	inline_speed void
701	fd_kill (EV_P_ int fd)	839	fd_kill (EV_P_ int fd)
702	{	840	{
703	ev_io *w;	841	ev_io *w;
704		842
705	while ((w = (ev_io *)anfds [fd].head))	843	while ((w = (ev_io *)anfds [fd].head))
…		…
707	ev_io_stop (EV_A_ w);	845	ev_io_stop (EV_A_ w);
708	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);
709	}	847	}
710	}	848	}
711		849
712	int inline_size	850	/* check whether the given fd is atcually valid, for error recovery */
		851	inline_size int
713	fd_valid (int fd)	852	fd_valid (int fd)
714	{	853	{
715	#ifdef _WIN32	854	#ifdef _WIN32
716	return _get_osfhandle (fd) != -1;	855	return _get_osfhandle (fd) != -1;
717	#else	856	#else
…		…
725	{	864	{
726	int fd;	865	int fd;
727		866
728	for (fd = 0; fd < anfdmax; ++fd)	867	for (fd = 0; fd < anfdmax; ++fd)
729	if (anfds [fd].events)	868	if (anfds [fd].events)
730	if (!fd_valid (fd) == -1 && errno == EBADF)	869	if (!fd_valid (fd) && errno == EBADF)
731	fd_kill (EV_A_ fd);	870	fd_kill (EV_A_ fd);
732	}	871	}
733		872
734	/* 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 */
735	static void noinline	874	static void noinline
…		…
753		892
754	for (fd = 0; fd < anfdmax; ++fd)	893	for (fd = 0; fd < anfdmax; ++fd)
755	if (anfds [fd].events)	894	if (anfds [fd].events)
756	{	895	{
757	anfds [fd].events = 0;	896	anfds [fd].events = 0;
		897	anfds [fd].emask = 0;
758	fd_change (EV_A_ fd, EV_IOFDSET | 1);	898	fd_change (EV_A_ fd, EV__IOFDSET | 1);
759	}	899	}
760	}	900	}
761		901
762	/*****************************************************************************/	902	/*****************************************************************************/
		903
		904	/*
		905	* the heap functions want a real array index. array index 0 uis guaranteed to not
		906	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
		907	* the branching factor of the d-tree.
		908	*/
763		909
764	/*	910	/*
765	* at the moment we allow libev the luxury of two heaps,	911	* at the moment we allow libev the luxury of two heaps,
766	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap	912	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
767	* which is more cache-efficient.	913	* which is more cache-efficient.
768	* the difference is about 5% with 50000+ watchers.	914	* the difference is about 5% with 50000+ watchers.
769	*/	915	*/
770	#define USE_4HEAP !EV_MINIMAL
771	#if USE_4HEAP	916	#if EV_USE_4HEAP
772		917
		918	#define DHEAP 4
773	#define HEAP0 3 /* index of first element in heap */	919	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		920	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
		921	#define UPHEAP_DONE(p,k) ((p) == (k))
774		922
775	/* towards the root */	923	/* away from the root */
776	void inline_speed	924	inline_speed void
777	upheap (WT *heap, int k)	925	downheap (ANHE *heap, int N, int k)
778	{	926	{
779	WT w = heap [k];	927	ANHE he = heap [k];
		928	ANHE *E = heap + N + HEAP0;
780		929
781	for (;;)	930	for (;;)
782	{	931	{
783	int p = ((k - HEAP0 - 1) / 4) + HEAP0;
784
785	if (p >= HEAP0 || heap [p]->at <= w->at)
786	break;
787
788	heap [k] = heap [p];
789	ev_active (heap [k]) = k;
790	k = p;
791	}
792
793	heap [k] = w;
794	ev_active (heap [k]) = k;
795	}
796
797	/* away from the root */
798	void inline_speed
799	downheap (WT *heap, int N, int k)
800	{
801	WT w = heap [k];
802	WT *E = heap + N + HEAP0;
803
804	for (;;)
805	{
806	ev_tstamp minat;	932	ev_tstamp minat;
807	WT *minpos;	933	ANHE *minpos;
808	WT *pos = heap + 4 * (k - HEAP0) + HEAP0;	934	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
809		935
810	// find minimum child	936	/* find minimum child */
811	if (expect_true (pos +3 < E))	937	if (expect_true (pos + DHEAP - 1 < E))
812	{	938	{
813	/* fast path */
814	(minpos = pos + 0), (minat = (*minpos)->at);	939	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
815	if (pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at);	940	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
816	if (pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at);	941	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
817	if (pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at);	942	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		943	}
		944	else if (pos < E)
		945	{
		946	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		947	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		948	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		949	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
818	}	950	}
819	else	951	else
820	{
821	/* slow path */
822	if (pos >= E)
823	break;
824	(minpos = pos + 0), (minat = (*minpos)->at);
825	if (pos + 1 < E && pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at);
826	if (pos + 2 < E && pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at);
827	if (pos + 3 < E && pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at);
828	}
829
830	if (w->at <= minat)
831	break;	952	break;
832		953
833	ev_active (*minpos) = k;	954	if (ANHE_at (he) <= minat)
		955	break;
		956
834	heap [k] = *minpos;	957	heap [k] = *minpos;
		958	ev_active (ANHE_w (*minpos)) = k;
835		959
836	k = minpos - heap;	960	k = minpos - heap;
837	}	961	}
838		962
839	heap [k] = w;	963	heap [k] = he;
840	ev_active (heap [k]) = k;	964	ev_active (ANHE_w (he)) = k;
841	}	965	}
842		966
843	#else // 4HEAP	967	#else /* 4HEAP */
844		968
845	#define HEAP0 1	969	#define HEAP0 1
		970	#define HPARENT(k) ((k) >> 1)
		971	#define UPHEAP_DONE(p,k) (!(p))
846		972
847	/* towards the root */	973	/* away from the root */
848	void inline_speed	974	inline_speed void
849	upheap (WT *heap, int k)	975	downheap (ANHE *heap, int N, int k)
850	{	976	{
851	WT w = heap [k];	977	ANHE he = heap [k];
852		978
853	for (;;)	979	for (;;)
854	{	980	{
855	int p = k >> 1;	981	int c = k << 1;
856		982
857	/* maybe we could use a dummy element at heap [0]? */	983	if (c > N + HEAP0 - 1)
858	if (!p || heap [p]->at <= w->at)
859	break;	984	break;
860		985
861	heap [k] = heap [p];	986	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
862	ev_active (heap [k]) = k;	987	? 1 : 0;
863	k = p;
864	}
865		988
866	heap [k] = w;	989	if (ANHE_at (he) <= ANHE_at (heap [c]))
867	ev_active (heap [k]) = k;
868	}
869
870	/* away from the root */
871	void inline_speed
872	downheap (WT *heap, int N, int k)
873	{
874	WT w = heap [k];
875
876	for (;;)
877	{
878	int c = k << 1;
879
880	if (c > N)
881	break;	990	break;
882		991
883	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
884	? 1 : 0;
885
886	if (w->at <= heap [c]->at)
887	break;
888
889	heap [k] = heap [c];	992	heap [k] = heap [c];
890	((W)heap [k])->active = k;	993	ev_active (ANHE_w (heap [k])) = k;
891		994
892	k = c;	995	k = c;
893	}	996	}
894		997
895	heap [k] = w;	998	heap [k] = he;
		999	ev_active (ANHE_w (he)) = k;
		1000	}
		1001	#endif
		1002
		1003	/* towards the root */
		1004	inline_speed void
		1005	upheap (ANHE *heap, int k)
		1006	{
		1007	ANHE he = heap [k];
		1008
		1009	for (;;)
		1010	{
		1011	int p = HPARENT (k);
		1012
		1013	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		1014	break;
		1015
		1016	heap [k] = heap [p];
896	ev_active (heap [k]) = k;	1017	ev_active (ANHE_w (heap [k])) = k;
897	}	1018	k = p;
898	#endif	1019	}
899		1020
900	void inline_size	1021	heap [k] = he;
		1022	ev_active (ANHE_w (he)) = k;
		1023	}
		1024
		1025	/* move an element suitably so it is in a correct place */
		1026	inline_size void
901	adjustheap (WT *heap, int N, int k)	1027	adjustheap (ANHE *heap, int N, int k)
902	{	1028	{
		1029	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
903	upheap (heap, k);	1030	upheap (heap, k);
		1031	else
904	downheap (heap, N, k);	1032	downheap (heap, N, k);
		1033	}
		1034
		1035	/* rebuild the heap: this function is used only once and executed rarely */
		1036	inline_size void
		1037	reheap (ANHE *heap, int N)
		1038	{
		1039	int i;
		1040
		1041	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		1042	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		1043	for (i = 0; i < N; ++i)
		1044	upheap (heap, i + HEAP0);
905	}	1045	}
906		1046
907	/*****************************************************************************/	1047	/*****************************************************************************/
908		1048
		1049	/* associate signal watchers to a signal signal */
909	typedef struct	1050	typedef struct
910	{	1051	{
911	WL head;	1052	WL head;
912	EV_ATOMIC_T gotsig;	1053	EV_ATOMIC_T gotsig;
913	} ANSIG;	1054	} ANSIG;
…		…
915	static ANSIG *signals;	1056	static ANSIG *signals;
916	static int signalmax;	1057	static int signalmax;
917		1058
918	static EV_ATOMIC_T gotsig;	1059	static EV_ATOMIC_T gotsig;
919		1060
920	void inline_size
921	signals_init (ANSIG *base, int count)
922	{
923	while (count--)
924	{
925	base->head = 0;
926	base->gotsig = 0;
927
928	++base;
929	}
930	}
931
932	/*****************************************************************************/	1061	/*****************************************************************************/
933		1062
934	void inline_speed	1063	/* used to prepare libev internal fd's */
		1064	/* this is not fork-safe */
		1065	inline_speed void
935	fd_intern (int fd)	1066	fd_intern (int fd)
936	{	1067	{
937	#ifdef _WIN32	1068	#ifdef _WIN32
938	int arg = 1;	1069	unsigned long arg = 1;
939	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1070	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
940	#else	1071	#else
941	fcntl (fd, F_SETFD, FD_CLOEXEC);	1072	fcntl (fd, F_SETFD, FD_CLOEXEC);
942	fcntl (fd, F_SETFL, O_NONBLOCK);	1073	fcntl (fd, F_SETFL, O_NONBLOCK);
943	#endif	1074	#endif
944	}	1075	}
945		1076
946	static void noinline	1077	static void noinline
947	evpipe_init (EV_P)	1078	evpipe_init (EV_P)
948	{	1079	{
949	if (!ev_is_active (&pipeev))	1080	if (!ev_is_active (&pipe_w))
950	{	1081	{
951	#if EV_USE_EVENTFD	1082	#if EV_USE_EVENTFD
952	if ((evfd = eventfd (0, 0)) >= 0)	1083	if ((evfd = eventfd (0, 0)) >= 0)
953	{	1084	{
954	evpipe [0] = -1;	1085	evpipe [0] = -1;
955	fd_intern (evfd);	1086	fd_intern (evfd);
956	ev_io_set (&pipeev, evfd, EV_READ);	1087	ev_io_set (&pipe_w, evfd, EV_READ);
957	}	1088	}
958	else	1089	else
959	#endif	1090	#endif
960	{	1091	{
961	while (pipe (evpipe))	1092	while (pipe (evpipe))
962	syserr ("(libev) error creating signal/async pipe");	1093	ev_syserr ("(libev) error creating signal/async pipe");
963		1094
964	fd_intern (evpipe [0]);	1095	fd_intern (evpipe [0]);
965	fd_intern (evpipe [1]);	1096	fd_intern (evpipe [1]);
966	ev_io_set (&pipeev, evpipe [0], EV_READ);	1097	ev_io_set (&pipe_w, evpipe [0], EV_READ);
967	}	1098	}
968		1099
969	ev_io_start (EV_A_ &pipeev);	1100	ev_io_start (EV_A_ &pipe_w);
970	ev_unref (EV_A); /* watcher should not keep loop alive */	1101	ev_unref (EV_A); /* watcher should not keep loop alive */
971	}	1102	}
972	}	1103	}
973		1104
974	void inline_size	1105	inline_size void
975	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1106	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
976	{	1107	{
977	if (!*flag)	1108	if (!*flag)
978	{	1109	{
979	int old_errno = errno; /* save errno because write might clobber it */	1110	int old_errno = errno; /* save errno because write might clobber it */
…		…
992		1123
993	errno = old_errno;	1124	errno = old_errno;
994	}	1125	}
995	}	1126	}
996		1127
		1128	/* called whenever the libev signal pipe */
		1129	/* got some events (signal, async) */
997	static void	1130	static void
998	pipecb (EV_P_ ev_io *iow, int revents)	1131	pipecb (EV_P_ ev_io *iow, int revents)
999	{	1132	{
1000	#if EV_USE_EVENTFD	1133	#if EV_USE_EVENTFD
1001	if (evfd >= 0)	1134	if (evfd >= 0)
…		…
1057	ev_feed_signal_event (EV_P_ int signum)	1190	ev_feed_signal_event (EV_P_ int signum)
1058	{	1191	{
1059	WL w;	1192	WL w;
1060		1193
1061	#if EV_MULTIPLICITY	1194	#if EV_MULTIPLICITY
1062	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));
1063	#endif	1196	#endif
1064		1197
1065	--signum;	1198	--signum;
1066		1199
1067	if (signum < 0 || signum >= signalmax)	1200	if (signum < 0 || signum >= signalmax)
…		…
1083		1216
1084	#ifndef WIFCONTINUED	1217	#ifndef WIFCONTINUED
1085	# define WIFCONTINUED(status) 0	1218	# define WIFCONTINUED(status) 0
1086	#endif	1219	#endif
1087		1220
1088	void inline_speed	1221	/* handle a single child status event */
		1222	inline_speed void
1089	child_reap (EV_P_ int chain, int pid, int status)	1223	child_reap (EV_P_ int chain, int pid, int status)
1090	{	1224	{
1091	ev_child *w;	1225	ev_child *w;
1092	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1226	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1093		1227
…		…
1106		1240
1107	#ifndef WCONTINUED	1241	#ifndef WCONTINUED
1108	# define WCONTINUED 0	1242	# define WCONTINUED 0
1109	#endif	1243	#endif
1110		1244
		1245	/* called on sigchld etc., calls waitpid */
1111	static void	1246	static void
1112	childcb (EV_P_ ev_signal *sw, int revents)	1247	childcb (EV_P_ ev_signal *sw, int revents)
1113	{	1248	{
1114	int pid, status;	1249	int pid, status;
1115		1250
…		…
1196	/* kqueue is borked on everything but netbsd apparently */	1331	/* kqueue is borked on everything but netbsd apparently */
1197	/* 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 */
1198	flags &= ~EVBACKEND_KQUEUE;	1333	flags &= ~EVBACKEND_KQUEUE;
1199	#endif	1334	#endif
1200	#ifdef __APPLE__	1335	#ifdef __APPLE__
1201	// flags &= ~EVBACKEND_KQUEUE; for documentation	1336	/* only select works correctly on that "unix-certified" platform */
1202	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 */
1203	#endif	1339	#endif
1204		1340
1205	return flags;	1341	return flags;
1206	}	1342	}
1207		1343
…		…
1227	ev_loop_count (EV_P)	1363	ev_loop_count (EV_P)
1228	{	1364	{
1229	return loop_count;	1365	return loop_count;
1230	}	1366	}
1231		1367
		1368	unsigned int
		1369	ev_loop_depth (EV_P)
		1370	{
		1371	return loop_depth;
		1372	}
		1373
1232	void	1374	void
1233	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1375	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1234	{	1376	{
1235	io_blocktime = interval;	1377	io_blocktime = interval;
1236	}	1378	}
…		…
1239	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1381	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1240	{	1382	{
1241	timeout_blocktime = interval;	1383	timeout_blocktime = interval;
1242	}	1384	}
1243		1385
		1386	/* initialise a loop structure, must be zero-initialised */
1244	static void noinline	1387	static void noinline
1245	loop_init (EV_P_ unsigned int flags)	1388	loop_init (EV_P_ unsigned int flags)
1246	{	1389	{
1247	if (!backend)	1390	if (!backend)
1248	{	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
1249	#if EV_USE_MONOTONIC	1402	#if EV_USE_MONOTONIC
		1403	if (!have_monotonic)
1250	{	1404	{
1251	struct timespec ts;	1405	struct timespec ts;
		1406
1252	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1407	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1253	have_monotonic = 1;	1408	have_monotonic = 1;
1254	}	1409	}
1255	#endif	1410	#endif
1256		1411
1257	ev_rt_now = ev_time ();	1412	ev_rt_now = ev_time ();
1258	mn_now = get_clock ();	1413	mn_now = get_clock ();
1259	now_floor = mn_now;	1414	now_floor = mn_now;
…		…
1296	#endif	1451	#endif
1297	#if EV_USE_SELECT	1452	#if EV_USE_SELECT
1298	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1453	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1299	#endif	1454	#endif
1300		1455
		1456	ev_prepare_init (&pending_w, pendingcb);
		1457
1301	ev_init (&pipeev, pipecb);	1458	ev_init (&pipe_w, pipecb);
1302	ev_set_priority (&pipeev, EV_MAXPRI);	1459	ev_set_priority (&pipe_w, EV_MAXPRI);
1303	}	1460	}
1304	}	1461	}
1305		1462
		1463	/* free up a loop structure */
1306	static void noinline	1464	static void noinline
1307	loop_destroy (EV_P)	1465	loop_destroy (EV_P)
1308	{	1466	{
1309	int i;	1467	int i;
1310		1468
1311	if (ev_is_active (&pipeev))	1469	if (ev_is_active (&pipe_w))
1312	{	1470	{
1313	ev_ref (EV_A); /* signal watcher */	1471	ev_ref (EV_A); /* signal watcher */
1314	ev_io_stop (EV_A_ &pipeev);	1472	ev_io_stop (EV_A_ &pipe_w);
1315		1473
1316	#if EV_USE_EVENTFD	1474	#if EV_USE_EVENTFD
1317	if (evfd >= 0)	1475	if (evfd >= 0)
1318	close (evfd);	1476	close (evfd);
1319	#endif	1477	#endif
…		…
1358	}	1516	}
1359		1517
1360	ev_free (anfds); anfdmax = 0;	1518	ev_free (anfds); anfdmax = 0;
1361		1519
1362	/* have to use the microsoft-never-gets-it-right macro */	1520	/* have to use the microsoft-never-gets-it-right macro */
		1521	array_free (rfeed, EMPTY);
1363	array_free (fdchange, EMPTY);	1522	array_free (fdchange, EMPTY);
1364	array_free (timer, EMPTY);	1523	array_free (timer, EMPTY);
1365	#if EV_PERIODIC_ENABLE	1524	#if EV_PERIODIC_ENABLE
1366	array_free (periodic, EMPTY);	1525	array_free (periodic, EMPTY);
1367	#endif	1526	#endif
…		…
1376		1535
1377	backend = 0;	1536	backend = 0;
1378	}	1537	}
1379		1538
1380	#if EV_USE_INOTIFY	1539	#if EV_USE_INOTIFY
1381	void inline_size infy_fork (EV_P);	1540	inline_size void infy_fork (EV_P);
1382	#endif	1541	#endif
1383		1542
1384	void inline_size	1543	inline_size void
1385	loop_fork (EV_P)	1544	loop_fork (EV_P)
1386	{	1545	{
1387	#if EV_USE_PORT	1546	#if EV_USE_PORT
1388	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1547	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1389	#endif	1548	#endif
…		…
1395	#endif	1554	#endif
1396	#if EV_USE_INOTIFY	1555	#if EV_USE_INOTIFY
1397	infy_fork (EV_A);	1556	infy_fork (EV_A);
1398	#endif	1557	#endif
1399		1558
1400	if (ev_is_active (&pipeev))	1559	if (ev_is_active (&pipe_w))
1401	{	1560	{
1402	/* this "locks" the handlers against writing to the pipe */	1561	/* this "locks" the handlers against writing to the pipe */
1403	/* while we modify the fd vars */	1562	/* while we modify the fd vars */
1404	gotsig = 1;	1563	gotsig = 1;
1405	#if EV_ASYNC_ENABLE	1564	#if EV_ASYNC_ENABLE
1406	gotasync = 1;	1565	gotasync = 1;
1407	#endif	1566	#endif
1408		1567
1409	ev_ref (EV_A);	1568	ev_ref (EV_A);
1410	ev_io_stop (EV_A_ &pipeev);	1569	ev_io_stop (EV_A_ &pipe_w);
1411		1570
1412	#if EV_USE_EVENTFD	1571	#if EV_USE_EVENTFD
1413	if (evfd >= 0)	1572	if (evfd >= 0)
1414	close (evfd);	1573	close (evfd);
1415	#endif	1574	#endif
…		…
1420	close (evpipe [1]);	1579	close (evpipe [1]);
1421	}	1580	}
1422		1581
1423	evpipe_init (EV_A);	1582	evpipe_init (EV_A);
1424	/* now iterate over everything, in case we missed something */	1583	/* now iterate over everything, in case we missed something */
1425	pipecb (EV_A_ &pipeev, EV_READ);	1584	pipecb (EV_A_ &pipe_w, EV_READ);
1426	}	1585	}
1427		1586
1428	postfork = 0;	1587	postfork = 0;
1429	}	1588	}
1430		1589
1431	#if EV_MULTIPLICITY	1590	#if EV_MULTIPLICITY
		1591
1432	struct ev_loop *	1592	struct ev_loop *
1433	ev_loop_new (unsigned int flags)	1593	ev_loop_new (unsigned int flags)
1434	{	1594	{
1435	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1595	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1436		1596
…		…
1454	void	1614	void
1455	ev_loop_fork (EV_P)	1615	ev_loop_fork (EV_P)
1456	{	1616	{
1457	postfork = 1; /* must be in line with ev_default_fork */	1617	postfork = 1; /* must be in line with ev_default_fork */
1458	}	1618	}
		1619
		1620	#if EV_VERIFY
		1621	static void noinline
		1622	verify_watcher (EV_P_ W w)
		1623	{
		1624	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1625
		1626	if (w->pending)
		1627	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1628	}
		1629
		1630	static void noinline
		1631	verify_heap (EV_P_ ANHE *heap, int N)
		1632	{
		1633	int i;
		1634
		1635	for (i = HEAP0; i < N + HEAP0; ++i)
		1636	{
		1637	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1638	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1639	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1640
		1641	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1642	}
		1643	}
		1644
		1645	static void noinline
		1646	array_verify (EV_P_ W *ws, int cnt)
		1647	{
		1648	while (cnt--)
		1649	{
		1650	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1651	verify_watcher (EV_A_ ws [cnt]);
		1652	}
		1653	}
		1654	#endif
		1655
		1656	void
		1657	ev_loop_verify (EV_P)
		1658	{
		1659	#if EV_VERIFY
		1660	int i;
		1661	WL w;
		1662
		1663	assert (activecnt >= -1);
		1664
		1665	assert (fdchangemax >= fdchangecnt);
		1666	for (i = 0; i < fdchangecnt; ++i)
		1667	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1668
		1669	assert (anfdmax >= 0);
		1670	for (i = 0; i < anfdmax; ++i)
		1671	for (w = anfds [i].head; w; w = w->next)
		1672	{
		1673	verify_watcher (EV_A_ (W)w);
		1674	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1675	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1676	}
		1677
		1678	assert (timermax >= timercnt);
		1679	verify_heap (EV_A_ timers, timercnt);
		1680
		1681	#if EV_PERIODIC_ENABLE
		1682	assert (periodicmax >= periodiccnt);
		1683	verify_heap (EV_A_ periodics, periodiccnt);
		1684	#endif
		1685
		1686	for (i = NUMPRI; i--; )
		1687	{
		1688	assert (pendingmax [i] >= pendingcnt [i]);
		1689	#if EV_IDLE_ENABLE
		1690	assert (idleall >= 0);
		1691	assert (idlemax [i] >= idlecnt [i]);
		1692	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		1693	#endif
		1694	}
		1695
		1696	#if EV_FORK_ENABLE
		1697	assert (forkmax >= forkcnt);
		1698	array_verify (EV_A_ (W *)forks, forkcnt);
		1699	#endif
		1700
		1701	#if EV_ASYNC_ENABLE
		1702	assert (asyncmax >= asynccnt);
		1703	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1704	#endif
		1705
		1706	assert (preparemax >= preparecnt);
		1707	array_verify (EV_A_ (W *)prepares, preparecnt);
		1708
		1709	assert (checkmax >= checkcnt);
		1710	array_verify (EV_A_ (W *)checks, checkcnt);
		1711
		1712	# if 0
		1713	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1714	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1459	#endif	1715	# endif
		1716	#endif
		1717	}
		1718
		1719	#endif /* multiplicity */
1460		1720
1461	#if EV_MULTIPLICITY	1721	#if EV_MULTIPLICITY
1462	struct ev_loop *	1722	struct ev_loop *
1463	ev_default_loop_init (unsigned int flags)	1723	ev_default_loop_init (unsigned int flags)
1464	#else	1724	#else
…		…
1497	{	1757	{
1498	#if EV_MULTIPLICITY	1758	#if EV_MULTIPLICITY
1499	struct ev_loop *loop = ev_default_loop_ptr;	1759	struct ev_loop *loop = ev_default_loop_ptr;
1500	#endif	1760	#endif
1501		1761
		1762	ev_default_loop_ptr = 0;
		1763
1502	#ifndef _WIN32	1764	#ifndef _WIN32
1503	ev_ref (EV_A); /* child watcher */	1765	ev_ref (EV_A); /* child watcher */
1504	ev_signal_stop (EV_A_ &childev);	1766	ev_signal_stop (EV_A_ &childev);
1505	#endif	1767	#endif
1506		1768
…		…
1512	{	1774	{
1513	#if EV_MULTIPLICITY	1775	#if EV_MULTIPLICITY
1514	struct ev_loop *loop = ev_default_loop_ptr;	1776	struct ev_loop *loop = ev_default_loop_ptr;
1515	#endif	1777	#endif
1516		1778
1517	if (backend)
1518	postfork = 1; /* must be in line with ev_loop_fork */	1779	postfork = 1; /* must be in line with ev_loop_fork */
1519	}	1780	}
1520		1781
1521	/*****************************************************************************/	1782	/*****************************************************************************/
1522		1783
1523	void	1784	void
1524	ev_invoke (EV_P_ void *w, int revents)	1785	ev_invoke (EV_P_ void *w, int revents)
1525	{	1786	{
1526	EV_CB_INVOKE ((W)w, revents);	1787	EV_CB_INVOKE ((W)w, revents);
1527	}	1788	}
1528		1789
1529	void inline_speed	1790	inline_speed void
1530	call_pending (EV_P)	1791	call_pending (EV_P)
1531	{	1792	{
1532	int pri;	1793	int pri;
1533		1794
1534	for (pri = NUMPRI; pri--; )	1795	for (pri = NUMPRI; pri--; )
1535	while (pendingcnt [pri])	1796	while (pendingcnt [pri])
1536	{	1797	{
1537	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1798	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1538		1799
1539	if (expect_true (p->w))
1540	{
1541	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1800	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1801	/* ^ this is no longer true, as pending_w could be here */
1542		1802
1543	p->w->pending = 0;	1803	p->w->pending = 0;
1544	EV_CB_INVOKE (p->w, p->events);	1804	EV_CB_INVOKE (p->w, p->events);
1545	}	1805	EV_FREQUENT_CHECK;
1546	}	1806	}
1547	}	1807	}
1548		1808
1549	#if EV_IDLE_ENABLE	1809	#if EV_IDLE_ENABLE
1550	void inline_size	1810	/* make idle watchers pending. this handles the "call-idle */
		1811	/* only when higher priorities are idle" logic */
		1812	inline_size void
1551	idle_reify (EV_P)	1813	idle_reify (EV_P)
1552	{	1814	{
1553	if (expect_false (idleall))	1815	if (expect_false (idleall))
1554	{	1816	{
1555	int pri;	1817	int pri;
…		…
1567	}	1829	}
1568	}	1830	}
1569	}	1831	}
1570	#endif	1832	#endif
1571		1833
1572	void inline_size	1834	/* make timers pending */
		1835	inline_size void
1573	timers_reify (EV_P)	1836	timers_reify (EV_P)
1574	{	1837	{
		1838	EV_FREQUENT_CHECK;
		1839
1575	while (timercnt && ev_at (timers [HEAP0]) <= mn_now)	1840	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1576	{	1841	{
1577	ev_timer *w = (ev_timer *)timers [HEAP0];	1842	do
1578
1579	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1580
1581	/* first reschedule or stop timer */
1582	if (w->repeat)
1583	{	1843	{
		1844	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1845
		1846	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		1847
		1848	/* first reschedule or stop timer */
		1849	if (w->repeat)
		1850	{
		1851	ev_at (w) += w->repeat;
		1852	if (ev_at (w) < mn_now)
		1853	ev_at (w) = mn_now;
		1854
1584	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1855	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1585		1856
1586	ev_at (w) += w->repeat;	1857	ANHE_at_cache (timers [HEAP0]);
1587	if (ev_at (w) < mn_now)
1588	ev_at (w) = mn_now;
1589
1590	downheap (timers, timercnt, HEAP0);	1858	downheap (timers, timercnt, HEAP0);
		1859	}
		1860	else
		1861	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1862
		1863	EV_FREQUENT_CHECK;
		1864	feed_reverse (EV_A_ (W)w);
1591	}	1865	}
1592	else	1866	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1593	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1594		1867
1595	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1868	feed_reverse_done (EV_A_ EV_TIMEOUT);
1596	}	1869	}
1597	}	1870	}
1598		1871
1599	#if EV_PERIODIC_ENABLE	1872	#if EV_PERIODIC_ENABLE
1600	void inline_size	1873	/* make periodics pending */
		1874	inline_size void
1601	periodics_reify (EV_P)	1875	periodics_reify (EV_P)
1602	{	1876	{
		1877	EV_FREQUENT_CHECK;
		1878
1603	while (periodiccnt && ev_at (periodics [HEAP0]) <= ev_rt_now)	1879	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1604	{	1880	{
1605	ev_periodic *w = (ev_periodic *)periodics [HEAP0];	1881	int feed_count = 0;
1606		1882
1607	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	1883	do
1608
1609	/* first reschedule or stop timer */
1610	if (w->reschedule_cb)
1611	{	1884	{
		1885	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1886
		1887	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		1888
		1889	/* first reschedule or stop timer */
		1890	if (w->reschedule_cb)
		1891	{
1612	ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);	1892	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1893
1613	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));	1894	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		1895
		1896	ANHE_at_cache (periodics [HEAP0]);
1614	downheap (periodics, periodiccnt, 1);	1897	downheap (periodics, periodiccnt, HEAP0);
		1898	}
		1899	else if (w->interval)
		1900	{
		1901	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1902	/* if next trigger time is not sufficiently in the future, put it there */
		1903	/* this might happen because of floating point inexactness */
		1904	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1905	{
		1906	ev_at (w) += w->interval;
		1907
		1908	/* if interval is unreasonably low we might still have a time in the past */
		1909	/* so correct this. this will make the periodic very inexact, but the user */
		1910	/* has effectively asked to get triggered more often than possible */
		1911	if (ev_at (w) < ev_rt_now)
		1912	ev_at (w) = ev_rt_now;
		1913	}
		1914
		1915	ANHE_at_cache (periodics [HEAP0]);
		1916	downheap (periodics, periodiccnt, HEAP0);
		1917	}
		1918	else
		1919	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1920
		1921	EV_FREQUENT_CHECK;
		1922	feed_reverse (EV_A_ (W)w);
1615	}	1923	}
1616	else if (w->interval)	1924	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1617	{
1618	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1619	if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1620	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1621	downheap (periodics, periodiccnt, HEAP0);
1622	}
1623	else
1624	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1625		1925
1626	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1926	feed_reverse_done (EV_A_ EV_PERIODIC);
1627	}	1927	}
1628	}	1928	}
1629		1929
		1930	/* simply recalculate all periodics */
		1931	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1630	static void noinline	1932	static void noinline
1631	periodics_reschedule (EV_P)	1933	periodics_reschedule (EV_P)
1632	{	1934	{
1633	int i;	1935	int i;
1634		1936
1635	/* adjust periodics after time jump */	1937	/* adjust periodics after time jump */
1636	for (i = 1; i <= periodiccnt; ++i)	1938	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1637	{	1939	{
1638	ev_periodic *w = (ev_periodic *)periodics [i];	1940	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1639		1941
1640	if (w->reschedule_cb)	1942	if (w->reschedule_cb)
1641	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1943	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1642	else if (w->interval)	1944	else if (w->interval)
1643	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	1945	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1946
		1947	ANHE_at_cache (periodics [i]);
		1948	}
		1949
		1950	reheap (periodics, periodiccnt);
		1951	}
		1952	#endif
		1953
		1954	/* adjust all timers by a given offset */
		1955	static void noinline
		1956	timers_reschedule (EV_P_ ev_tstamp adjust)
		1957	{
		1958	int i;
		1959
		1960	for (i = 0; i < timercnt; ++i)
1644	}	1961	{
1645		1962	ANHE *he = timers + i + HEAP0;
1646	/* now rebuild the heap */	1963	ANHE_w (*he)->at += adjust;
1647	for (i = periodiccnt >> 1; --i; )	1964	ANHE_at_cache (*he);
1648	downheap (periodics, periodiccnt, i + HEAP0);	1965	}
1649	}	1966	}
1650	#endif
1651		1967
1652	void inline_speed	1968	/* fetch new monotonic and realtime times from the kernel */
		1969	/* also detetc if there was a timejump, and act accordingly */
		1970	inline_speed void
1653	time_update (EV_P_ ev_tstamp max_block)	1971	time_update (EV_P_ ev_tstamp max_block)
1654	{	1972	{
1655	int i;
1656
1657	#if EV_USE_MONOTONIC	1973	#if EV_USE_MONOTONIC
1658	if (expect_true (have_monotonic))	1974	if (expect_true (have_monotonic))
1659	{	1975	{
		1976	int i;
1660	ev_tstamp odiff = rtmn_diff;	1977	ev_tstamp odiff = rtmn_diff;
1661		1978
1662	mn_now = get_clock ();	1979	mn_now = get_clock ();
1663		1980
1664	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	1981	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1690	ev_rt_now = ev_time ();	2007	ev_rt_now = ev_time ();
1691	mn_now = get_clock ();	2008	mn_now = get_clock ();
1692	now_floor = mn_now;	2009	now_floor = mn_now;
1693	}	2010	}
1694		2011
		2012	/* no timer adjustment, as the monotonic clock doesn't jump */
		2013	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1695	# if EV_PERIODIC_ENABLE	2014	# if EV_PERIODIC_ENABLE
1696	periodics_reschedule (EV_A);	2015	periodics_reschedule (EV_A);
1697	# endif	2016	# endif
1698	/* no timer adjustment, as the monotonic clock doesn't jump */
1699	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1700	}	2017	}
1701	else	2018	else
1702	#endif	2019	#endif
1703	{	2020	{
1704	ev_rt_now = ev_time ();	2021	ev_rt_now = ev_time ();
1705		2022
1706	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2023	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1707	{	2024	{
		2025	/* adjust timers. this is easy, as the offset is the same for all of them */
		2026	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1708	#if EV_PERIODIC_ENABLE	2027	#if EV_PERIODIC_ENABLE
1709	periodics_reschedule (EV_A);	2028	periodics_reschedule (EV_A);
1710	#endif	2029	#endif
1711	/* adjust timers. this is easy, as the offset is the same for all of them */
1712	for (i = 1; i <= timercnt; ++i)
1713	ev_at (timers [i]) += ev_rt_now - mn_now;
1714	}	2030	}
1715		2031
1716	mn_now = ev_rt_now;	2032	mn_now = ev_rt_now;
1717	}	2033	}
1718	}	2034	}
1719		2035
1720	void	2036	void
1721	ev_ref (EV_P)
1722	{
1723	++activecnt;
1724	}
1725
1726	void
1727	ev_unref (EV_P)
1728	{
1729	--activecnt;
1730	}
1731
1732	static int loop_done;
1733
1734	void
1735	ev_loop (EV_P_ int flags)	2037	ev_loop (EV_P_ int flags)
1736	{	2038	{
		2039	++loop_depth;
		2040
1737	loop_done = EVUNLOOP_CANCEL;	2041	loop_done = EVUNLOOP_CANCEL;
1738		2042
1739	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2043	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1740		2044
1741	do	2045	do
1742	{	2046	{
		2047	#if EV_VERIFY >= 2
		2048	ev_loop_verify (EV_A);
		2049	#endif
		2050
1743	#ifndef _WIN32	2051	#ifndef _WIN32
1744	if (expect_false (curpid)) /* penalise the forking check even more */	2052	if (expect_false (curpid)) /* penalise the forking check even more */
1745	if (expect_false (getpid () != curpid))	2053	if (expect_false (getpid () != curpid))
1746	{	2054	{
1747	curpid = getpid ();	2055	curpid = getpid ();
…		…
1764	{	2072	{
1765	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2073	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1766	call_pending (EV_A);	2074	call_pending (EV_A);
1767	}	2075	}
1768		2076
1769	if (expect_false (!activecnt))
1770	break;
1771
1772	/* we might have forked, so reify kernel state if necessary */	2077	/* we might have forked, so reify kernel state if necessary */
1773	if (expect_false (postfork))	2078	if (expect_false (postfork))
1774	loop_fork (EV_A);	2079	loop_fork (EV_A);
1775		2080
1776	/* update fd-related kernel structures */	2081	/* update fd-related kernel structures */
…		…
1781	ev_tstamp waittime = 0.;	2086	ev_tstamp waittime = 0.;
1782	ev_tstamp sleeptime = 0.;	2087	ev_tstamp sleeptime = 0.;
1783		2088
1784	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2089	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1785	{	2090	{
		2091	/* remember old timestamp for io_blocktime calculation */
		2092	ev_tstamp prev_mn_now = mn_now;
		2093
1786	/* update time to cancel out callback processing overhead */	2094	/* update time to cancel out callback processing overhead */
1787	time_update (EV_A_ 1e100);	2095	time_update (EV_A_ 1e100);
1788		2096
1789	waittime = MAX_BLOCKTIME;	2097	waittime = MAX_BLOCKTIME;
1790		2098
1791	if (timercnt)	2099	if (timercnt)
1792	{	2100	{
1793	ev_tstamp to = ev_at (timers [HEAP0]) - mn_now + backend_fudge;	2101	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1794	if (waittime > to) waittime = to;	2102	if (waittime > to) waittime = to;
1795	}	2103	}
1796		2104
1797	#if EV_PERIODIC_ENABLE	2105	#if EV_PERIODIC_ENABLE
1798	if (periodiccnt)	2106	if (periodiccnt)
1799	{	2107	{
1800	ev_tstamp to = ev_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2108	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1801	if (waittime > to) waittime = to;	2109	if (waittime > to) waittime = to;
1802	}	2110	}
1803	#endif	2111	#endif
1804		2112
		2113	/* don't let timeouts decrease the waittime below timeout_blocktime */
1805	if (expect_false (waittime < timeout_blocktime))	2114	if (expect_false (waittime < timeout_blocktime))
1806	waittime = timeout_blocktime;	2115	waittime = timeout_blocktime;
1807		2116
1808	sleeptime = waittime - backend_fudge;	2117	/* extra check because io_blocktime is commonly 0 */
1809
1810	if (expect_true (sleeptime > io_blocktime))	2118	if (expect_false (io_blocktime))
1811	sleeptime = io_blocktime;
1812
1813	if (sleeptime)
1814	{	2119	{
		2120	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2121
		2122	if (sleeptime > waittime - backend_fudge)
		2123	sleeptime = waittime - backend_fudge;
		2124
		2125	if (expect_true (sleeptime > 0.))
		2126	{
1815	ev_sleep (sleeptime);	2127	ev_sleep (sleeptime);
1816	waittime -= sleeptime;	2128	waittime -= sleeptime;
		2129	}
1817	}	2130	}
1818	}	2131	}
1819		2132
1820	++loop_count;	2133	++loop_count;
1821	backend_poll (EV_A_ waittime);	2134	backend_poll (EV_A_ waittime);
…		…
1847	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2160	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1848	));	2161	));
1849		2162
1850	if (loop_done == EVUNLOOP_ONE)	2163	if (loop_done == EVUNLOOP_ONE)
1851	loop_done = EVUNLOOP_CANCEL;	2164	loop_done = EVUNLOOP_CANCEL;
		2165
		2166	--loop_depth;
1852	}	2167	}
1853		2168
1854	void	2169	void
1855	ev_unloop (EV_P_ int how)	2170	ev_unloop (EV_P_ int how)
1856	{	2171	{
1857	loop_done = how;	2172	loop_done = how;
1858	}	2173	}
1859		2174
		2175	void
		2176	ev_ref (EV_P)
		2177	{
		2178	++activecnt;
		2179	}
		2180
		2181	void
		2182	ev_unref (EV_P)
		2183	{
		2184	--activecnt;
		2185	}
		2186
		2187	void
		2188	ev_now_update (EV_P)
		2189	{
		2190	time_update (EV_A_ 1e100);
		2191	}
		2192
		2193	void
		2194	ev_suspend (EV_P)
		2195	{
		2196	ev_now_update (EV_A);
		2197	}
		2198
		2199	void
		2200	ev_resume (EV_P)
		2201	{
		2202	ev_tstamp mn_prev = mn_now;
		2203
		2204	ev_now_update (EV_A);
		2205	timers_reschedule (EV_A_ mn_now - mn_prev);
		2206	#if EV_PERIODIC_ENABLE
		2207	/* TODO: really do this? */
		2208	periodics_reschedule (EV_A);
		2209	#endif
		2210	}
		2211
1860	/*****************************************************************************/	2212	/*****************************************************************************/
		2213	/* singly-linked list management, used when the expected list length is short */
1861		2214
1862	void inline_size	2215	inline_size void
1863	wlist_add (WL *head, WL elem)	2216	wlist_add (WL *head, WL elem)
1864	{	2217	{
1865	elem->next = *head;	2218	elem->next = *head;
1866	*head = elem;	2219	*head = elem;
1867	}	2220	}
1868		2221
1869	void inline_size	2222	inline_size void
1870	wlist_del (WL *head, WL elem)	2223	wlist_del (WL *head, WL elem)
1871	{	2224	{
1872	while (*head)	2225	while (*head)
1873	{	2226	{
1874	if (*head == elem)	2227	if (*head == elem)
…		…
1879		2232
1880	head = &(*head)->next;	2233	head = &(*head)->next;
1881	}	2234	}
1882	}	2235	}
1883		2236
1884	void inline_speed	2237	/* internal, faster, version of ev_clear_pending */
		2238	inline_speed void
1885	clear_pending (EV_P_ W w)	2239	clear_pending (EV_P_ W w)
1886	{	2240	{
1887	if (w->pending)	2241	if (w->pending)
1888	{	2242	{
1889	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2243	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1890	w->pending = 0;	2244	w->pending = 0;
1891	}	2245	}
1892	}	2246	}
1893		2247
1894	int	2248	int
…		…
1898	int pending = w_->pending;	2252	int pending = w_->pending;
1899		2253
1900	if (expect_true (pending))	2254	if (expect_true (pending))
1901	{	2255	{
1902	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2256	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2257	p->w = (W)&pending_w;
1903	w_->pending = 0;	2258	w_->pending = 0;
1904	p->w = 0;
1905	return p->events;	2259	return p->events;
1906	}	2260	}
1907	else	2261	else
1908	return 0;	2262	return 0;
1909	}	2263	}
1910		2264
1911	void inline_size	2265	inline_size void
1912	pri_adjust (EV_P_ W w)	2266	pri_adjust (EV_P_ W w)
1913	{	2267	{
1914	int pri = w->priority;	2268	int pri = ev_priority (w);
1915	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2269	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1916	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2270	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1917	w->priority = pri;	2271	ev_set_priority (w, pri);
1918	}	2272	}
1919		2273
1920	void inline_speed	2274	inline_speed void
1921	ev_start (EV_P_ W w, int active)	2275	ev_start (EV_P_ W w, int active)
1922	{	2276	{
1923	pri_adjust (EV_A_ w);	2277	pri_adjust (EV_A_ w);
1924	w->active = active;	2278	w->active = active;
1925	ev_ref (EV_A);	2279	ev_ref (EV_A);
1926	}	2280	}
1927		2281
1928	void inline_size	2282	inline_size void
1929	ev_stop (EV_P_ W w)	2283	ev_stop (EV_P_ W w)
1930	{	2284	{
1931	ev_unref (EV_A);	2285	ev_unref (EV_A);
1932	w->active = 0;	2286	w->active = 0;
1933	}	2287	}
…		…
1940	int fd = w->fd;	2294	int fd = w->fd;
1941		2295
1942	if (expect_false (ev_is_active (w)))	2296	if (expect_false (ev_is_active (w)))
1943	return;	2297	return;
1944		2298
1945	assert (("ev_io_start called with negative fd", fd >= 0));	2299	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2300	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
		2301
		2302	EV_FREQUENT_CHECK;
1946		2303
1947	ev_start (EV_A_ (W)w, 1);	2304	ev_start (EV_A_ (W)w, 1);
1948	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2305	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1949	wlist_add (&anfds[fd].head, (WL)w);	2306	wlist_add (&anfds[fd].head, (WL)w);
1950		2307
1951	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2308	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
1952	w->events &= ~EV_IOFDSET;	2309	w->events &= ~EV__IOFDSET;
		2310
		2311	EV_FREQUENT_CHECK;
1953	}	2312	}
1954		2313
1955	void noinline	2314	void noinline
1956	ev_io_stop (EV_P_ ev_io *w)	2315	ev_io_stop (EV_P_ ev_io *w)
1957	{	2316	{
1958	clear_pending (EV_A_ (W)w);	2317	clear_pending (EV_A_ (W)w);
1959	if (expect_false (!ev_is_active (w)))	2318	if (expect_false (!ev_is_active (w)))
1960	return;	2319	return;
1961		2320
1962	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2321	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		2322
		2323	EV_FREQUENT_CHECK;
1963		2324
1964	wlist_del (&anfds[w->fd].head, (WL)w);	2325	wlist_del (&anfds[w->fd].head, (WL)w);
1965	ev_stop (EV_A_ (W)w);	2326	ev_stop (EV_A_ (W)w);
1966		2327
1967	fd_change (EV_A_ w->fd, 1);	2328	fd_change (EV_A_ w->fd, 1);
		2329
		2330	EV_FREQUENT_CHECK;
1968	}	2331	}
1969		2332
1970	void noinline	2333	void noinline
1971	ev_timer_start (EV_P_ ev_timer *w)	2334	ev_timer_start (EV_P_ ev_timer *w)
1972	{	2335	{
1973	if (expect_false (ev_is_active (w)))	2336	if (expect_false (ev_is_active (w)))
1974	return;	2337	return;
1975		2338
1976	ev_at (w) += mn_now;	2339	ev_at (w) += mn_now;
1977		2340
1978	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2341	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1979		2342
		2343	EV_FREQUENT_CHECK;
		2344
		2345	++timercnt;
1980	ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1);	2346	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1981	array_needsize (WT, timers, timermax, timercnt + HEAP0, EMPTY2);	2347	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1982	timers [ev_active (w)] = (WT)w;	2348	ANHE_w (timers [ev_active (w)]) = (WT)w;
		2349	ANHE_at_cache (timers [ev_active (w)]);
1983	upheap (timers, ev_active (w));	2350	upheap (timers, ev_active (w));
1984		2351
		2352	EV_FREQUENT_CHECK;
		2353
1985	/*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/	2354	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1986	}	2355	}
1987		2356
1988	void noinline	2357	void noinline
1989	ev_timer_stop (EV_P_ ev_timer *w)	2358	ev_timer_stop (EV_P_ ev_timer *w)
1990	{	2359	{
1991	clear_pending (EV_A_ (W)w);	2360	clear_pending (EV_A_ (W)w);
1992	if (expect_false (!ev_is_active (w)))	2361	if (expect_false (!ev_is_active (w)))
1993	return;	2362	return;
1994		2363
		2364	EV_FREQUENT_CHECK;
		2365
1995	{	2366	{
1996	int active = ev_active (w);	2367	int active = ev_active (w);
1997		2368
1998	assert (("internal timer heap corruption", timers [active] == (WT)w));	2369	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
1999		2370
		2371	--timercnt;
		2372
2000	if (expect_true (active < timercnt + HEAP0 - 1))	2373	if (expect_true (active < timercnt + HEAP0))
2001	{	2374	{
2002	timers [active] = timers [timercnt + HEAP0 - 1];	2375	timers [active] = timers [timercnt + HEAP0];
2003	adjustheap (timers, timercnt, active);	2376	adjustheap (timers, timercnt, active);
2004	}	2377	}
2005
2006	--timercnt;
2007	}	2378	}
		2379
		2380	EV_FREQUENT_CHECK;
2008		2381
2009	ev_at (w) -= mn_now;	2382	ev_at (w) -= mn_now;
2010		2383
2011	ev_stop (EV_A_ (W)w);	2384	ev_stop (EV_A_ (W)w);
2012	}	2385	}
2013		2386
2014	void noinline	2387	void noinline
2015	ev_timer_again (EV_P_ ev_timer *w)	2388	ev_timer_again (EV_P_ ev_timer *w)
2016	{	2389	{
		2390	EV_FREQUENT_CHECK;
		2391
2017	if (ev_is_active (w))	2392	if (ev_is_active (w))
2018	{	2393	{
2019	if (w->repeat)	2394	if (w->repeat)
2020	{	2395	{
2021	ev_at (w) = mn_now + w->repeat;	2396	ev_at (w) = mn_now + w->repeat;
		2397	ANHE_at_cache (timers [ev_active (w)]);
2022	adjustheap (timers, timercnt, ev_active (w));	2398	adjustheap (timers, timercnt, ev_active (w));
2023	}	2399	}
2024	else	2400	else
2025	ev_timer_stop (EV_A_ w);	2401	ev_timer_stop (EV_A_ w);
2026	}	2402	}
2027	else if (w->repeat)	2403	else if (w->repeat)
2028	{	2404	{
2029	ev_at (w) = w->repeat;	2405	ev_at (w) = w->repeat;
2030	ev_timer_start (EV_A_ w);	2406	ev_timer_start (EV_A_ w);
2031	}	2407	}
		2408
		2409	EV_FREQUENT_CHECK;
2032	}	2410	}
2033		2411
2034	#if EV_PERIODIC_ENABLE	2412	#if EV_PERIODIC_ENABLE
2035	void noinline	2413	void noinline
2036	ev_periodic_start (EV_P_ ev_periodic *w)	2414	ev_periodic_start (EV_P_ ev_periodic *w)
…		…
2040		2418
2041	if (w->reschedule_cb)	2419	if (w->reschedule_cb)
2042	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2420	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2043	else if (w->interval)	2421	else if (w->interval)
2044	{	2422	{
2045	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2423	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2046	/* this formula differs from the one in periodic_reify because we do not always round up */	2424	/* this formula differs from the one in periodic_reify because we do not always round up */
2047	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2425	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2048	}	2426	}
2049	else	2427	else
2050	ev_at (w) = w->offset;	2428	ev_at (w) = w->offset;
2051		2429
		2430	EV_FREQUENT_CHECK;
		2431
		2432	++periodiccnt;
2052	ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1);	2433	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2053	array_needsize (WT, periodics, periodicmax, periodiccnt + HEAP0, EMPTY2);	2434	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2054	periodics [ev_active (w)] = (WT)w;	2435	ANHE_w (periodics [ev_active (w)]) = (WT)w;
		2436	ANHE_at_cache (periodics [ev_active (w)]);
2055	upheap (periodics, ev_active (w));	2437	upheap (periodics, ev_active (w));
2056		2438
		2439	EV_FREQUENT_CHECK;
		2440
2057	/*assert (("internal periodic heap corruption", periodics [ev_active (w)] == w));*/	2441	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2058	}	2442	}
2059		2443
2060	void noinline	2444	void noinline
2061	ev_periodic_stop (EV_P_ ev_periodic *w)	2445	ev_periodic_stop (EV_P_ ev_periodic *w)
2062	{	2446	{
2063	clear_pending (EV_A_ (W)w);	2447	clear_pending (EV_A_ (W)w);
2064	if (expect_false (!ev_is_active (w)))	2448	if (expect_false (!ev_is_active (w)))
2065	return;	2449	return;
2066		2450
		2451	EV_FREQUENT_CHECK;
		2452
2067	{	2453	{
2068	int active = ev_active (w);	2454	int active = ev_active (w);
2069		2455
2070	assert (("internal periodic heap corruption", periodics [active] == (WT)w));	2456	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2071		2457
		2458	--periodiccnt;
		2459
2072	if (expect_true (active < periodiccnt + HEAP0 - 1))	2460	if (expect_true (active < periodiccnt + HEAP0))
2073	{	2461	{
2074	periodics [active] = periodics [periodiccnt + HEAP0 - 1];	2462	periodics [active] = periodics [periodiccnt + HEAP0];
2075	adjustheap (periodics, periodiccnt, active);	2463	adjustheap (periodics, periodiccnt, active);
2076	}	2464	}
2077
2078	--periodiccnt;
2079	}	2465	}
		2466
		2467	EV_FREQUENT_CHECK;
2080		2468
2081	ev_stop (EV_A_ (W)w);	2469	ev_stop (EV_A_ (W)w);
2082	}	2470	}
2083		2471
2084	void noinline	2472	void noinline
…		…
2096		2484
2097	void noinline	2485	void noinline
2098	ev_signal_start (EV_P_ ev_signal *w)	2486	ev_signal_start (EV_P_ ev_signal *w)
2099	{	2487	{
2100	#if EV_MULTIPLICITY	2488	#if EV_MULTIPLICITY
2101	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2489	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2102	#endif	2490	#endif
2103	if (expect_false (ev_is_active (w)))	2491	if (expect_false (ev_is_active (w)))
2104	return;	2492	return;
2105		2493
2106	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2494	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2107		2495
2108	evpipe_init (EV_A);	2496	evpipe_init (EV_A);
		2497
		2498	EV_FREQUENT_CHECK;
2109		2499
2110	{	2500	{
2111	#ifndef _WIN32	2501	#ifndef _WIN32
2112	sigset_t full, prev;	2502	sigset_t full, prev;
2113	sigfillset (&full);	2503	sigfillset (&full);
2114	sigprocmask (SIG_SETMASK, &full, &prev);	2504	sigprocmask (SIG_SETMASK, &full, &prev);
2115	#endif	2505	#endif
2116		2506
2117	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2507	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2118		2508
2119	#ifndef _WIN32	2509	#ifndef _WIN32
2120	sigprocmask (SIG_SETMASK, &prev, 0);	2510	sigprocmask (SIG_SETMASK, &prev, 0);
2121	#endif	2511	#endif
2122	}	2512	}
…		…
2134	sigfillset (&sa.sa_mask);	2524	sigfillset (&sa.sa_mask);
2135	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2525	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2136	sigaction (w->signum, &sa, 0);	2526	sigaction (w->signum, &sa, 0);
2137	#endif	2527	#endif
2138	}	2528	}
		2529
		2530	EV_FREQUENT_CHECK;
2139	}	2531	}
2140		2532
2141	void noinline	2533	void noinline
2142	ev_signal_stop (EV_P_ ev_signal *w)	2534	ev_signal_stop (EV_P_ ev_signal *w)
2143	{	2535	{
2144	clear_pending (EV_A_ (W)w);	2536	clear_pending (EV_A_ (W)w);
2145	if (expect_false (!ev_is_active (w)))	2537	if (expect_false (!ev_is_active (w)))
2146	return;	2538	return;
2147		2539
		2540	EV_FREQUENT_CHECK;
		2541
2148	wlist_del (&signals [w->signum - 1].head, (WL)w);	2542	wlist_del (&signals [w->signum - 1].head, (WL)w);
2149	ev_stop (EV_A_ (W)w);	2543	ev_stop (EV_A_ (W)w);
2150		2544
2151	if (!signals [w->signum - 1].head)	2545	if (!signals [w->signum - 1].head)
2152	signal (w->signum, SIG_DFL);	2546	signal (w->signum, SIG_DFL);
		2547
		2548	EV_FREQUENT_CHECK;
2153	}	2549	}
2154		2550
2155	void	2551	void
2156	ev_child_start (EV_P_ ev_child *w)	2552	ev_child_start (EV_P_ ev_child *w)
2157	{	2553	{
2158	#if EV_MULTIPLICITY	2554	#if EV_MULTIPLICITY
2159	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2555	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2160	#endif	2556	#endif
2161	if (expect_false (ev_is_active (w)))	2557	if (expect_false (ev_is_active (w)))
2162	return;	2558	return;
2163		2559
		2560	EV_FREQUENT_CHECK;
		2561
2164	ev_start (EV_A_ (W)w, 1);	2562	ev_start (EV_A_ (W)w, 1);
2165	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2563	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2564
		2565	EV_FREQUENT_CHECK;
2166	}	2566	}
2167		2567
2168	void	2568	void
2169	ev_child_stop (EV_P_ ev_child *w)	2569	ev_child_stop (EV_P_ ev_child *w)
2170	{	2570	{
2171	clear_pending (EV_A_ (W)w);	2571	clear_pending (EV_A_ (W)w);
2172	if (expect_false (!ev_is_active (w)))	2572	if (expect_false (!ev_is_active (w)))
2173	return;	2573	return;
2174		2574
		2575	EV_FREQUENT_CHECK;
		2576
2175	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2577	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2176	ev_stop (EV_A_ (W)w);	2578	ev_stop (EV_A_ (W)w);
		2579
		2580	EV_FREQUENT_CHECK;
2177	}	2581	}
2178		2582
2179	#if EV_STAT_ENABLE	2583	#if EV_STAT_ENABLE
2180		2584
2181	# ifdef _WIN32	2585	# ifdef _WIN32
2182	# undef lstat	2586	# undef lstat
2183	# define lstat(a,b) _stati64 (a,b)	2587	# define lstat(a,b) _stati64 (a,b)
2184	# endif	2588	# endif
2185		2589
2186	#define DEF_STAT_INTERVAL 5.0074891	2590	#define DEF_STAT_INTERVAL 5.0074891
		2591	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2187	#define MIN_STAT_INTERVAL 0.1074891	2592	#define MIN_STAT_INTERVAL 0.1074891
2188		2593
2189	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2594	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2190		2595
2191	#if EV_USE_INOTIFY	2596	#if EV_USE_INOTIFY
2192	# define EV_INOTIFY_BUFSIZE 8192	2597	# define EV_INOTIFY_BUFSIZE 8192
…		…
2196	{	2601	{
2197	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);	2602	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);
2198		2603
2199	if (w->wd < 0)	2604	if (w->wd < 0)
2200	{	2605	{
		2606	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2201	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2607	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2202		2608
2203	/* monitor some parent directory for speedup hints */	2609	/* monitor some parent directory for speedup hints */
2204	/* note that exceeding the hardcoded limit is not a correctness issue, */	2610	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2205	/* but an efficiency issue only */	2611	/* but an efficiency issue only */
2206	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2612	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2207	{	2613	{
2208	char path [4096];	2614	char path [4096];
2209	strcpy (path, w->path);	2615	strcpy (path, w->path);
…		…
2213	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2619	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2214	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2620	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2215		2621
2216	char *pend = strrchr (path, '/');	2622	char *pend = strrchr (path, '/');
2217		2623
2218	if (!pend)	2624	if (!pend || pend == path)
2219	break; /* whoops, no '/', complain to your admin */	2625	break;
2220		2626
2221	*pend = 0;	2627	*pend = 0;
2222	w->wd = inotify_add_watch (fs_fd, path, mask);	2628	w->wd = inotify_add_watch (fs_fd, path, mask);
2223	}	2629	}
2224	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2630	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2225	}	2631	}
2226	}	2632	}
2227	else
2228	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2229		2633
2230	if (w->wd >= 0)	2634	if (w->wd >= 0)
		2635	{
2231	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2636	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2637
		2638	/* now local changes will be tracked by inotify, but remote changes won't */
		2639	/* unless the filesystem it known to be local, we therefore still poll */
		2640	/* also do poll on <2.6.25, but with normal frequency */
		2641	struct statfs sfs;
		2642
		2643	if (fs_2625 && !statfs (w->path, &sfs))
		2644	if (sfs.f_type == 0x1373 /* devfs */
		2645	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2646	|| sfs.f_type == 0x3153464a /* jfs */
		2647	|| sfs.f_type == 0x52654973 /* reiser3 */
		2648	|| sfs.f_type == 0x01021994 /* tempfs */
		2649	|| sfs.f_type == 0x58465342 /* xfs */)
		2650	return;
		2651
		2652	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2653	ev_timer_again (EV_A_ &w->timer);
		2654	}
2232	}	2655	}
2233		2656
2234	static void noinline	2657	static void noinline
2235	infy_del (EV_P_ ev_stat *w)	2658	infy_del (EV_P_ ev_stat *w)
2236	{	2659	{
…		…
2250		2673
2251	static void noinline	2674	static void noinline
2252	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2675	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2253	{	2676	{
2254	if (slot < 0)	2677	if (slot < 0)
2255	/* overflow, need to check for all hahs slots */	2678	/* overflow, need to check for all hash slots */
2256	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2679	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2257	infy_wd (EV_A_ slot, wd, ev);	2680	infy_wd (EV_A_ slot, wd, ev);
2258	else	2681	else
2259	{	2682	{
2260	WL w_;	2683	WL w_;
…		…
2266		2689
2267	if (w->wd == wd || wd == -1)	2690	if (w->wd == wd || wd == -1)
2268	{	2691	{
2269	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2692	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2270	{	2693	{
		2694	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2271	w->wd = -1;	2695	w->wd = -1;
2272	infy_add (EV_A_ w); /* re-add, no matter what */	2696	infy_add (EV_A_ w); /* re-add, no matter what */
2273	}	2697	}
2274		2698
2275	stat_timer_cb (EV_A_ &w->timer, 0);	2699	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2288		2712
2289	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2713	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2290	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2714	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2291	}	2715	}
2292		2716
2293	void inline_size	2717	inline_size void
		2718	check_2625 (EV_P)
		2719	{
		2720	/* kernels < 2.6.25 are borked
		2721	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2722	*/
		2723	struct utsname buf;
		2724	int major, minor, micro;
		2725
		2726	if (uname (&buf))
		2727	return;
		2728
		2729	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2730	return;
		2731
		2732	if (major < 2
		2733	|| (major == 2 && minor < 6)
		2734	|| (major == 2 && minor == 6 && micro < 25))
		2735	return;
		2736
		2737	fs_2625 = 1;
		2738	}
		2739
		2740	inline_size void
2294	infy_init (EV_P)	2741	infy_init (EV_P)
2295	{	2742	{
2296	if (fs_fd != -2)	2743	if (fs_fd != -2)
2297	return;	2744	return;
		2745
		2746	fs_fd = -1;
		2747
		2748	check_2625 (EV_A);
2298		2749
2299	fs_fd = inotify_init ();	2750	fs_fd = inotify_init ();
2300		2751
2301	if (fs_fd >= 0)	2752	if (fs_fd >= 0)
2302	{	2753	{
…		…
2304	ev_set_priority (&fs_w, EV_MAXPRI);	2755	ev_set_priority (&fs_w, EV_MAXPRI);
2305	ev_io_start (EV_A_ &fs_w);	2756	ev_io_start (EV_A_ &fs_w);
2306	}	2757	}
2307	}	2758	}
2308		2759
2309	void inline_size	2760	inline_size void
2310	infy_fork (EV_P)	2761	infy_fork (EV_P)
2311	{	2762	{
2312	int slot;	2763	int slot;
2313		2764
2314	if (fs_fd < 0)	2765	if (fs_fd < 0)
…		…
2330	w->wd = -1;	2781	w->wd = -1;
2331		2782
2332	if (fs_fd >= 0)	2783	if (fs_fd >= 0)
2333	infy_add (EV_A_ w); /* re-add, no matter what */	2784	infy_add (EV_A_ w); /* re-add, no matter what */
2334	else	2785	else
2335	ev_timer_start (EV_A_ &w->timer);	2786	ev_timer_again (EV_A_ &w->timer);
2336	}	2787	}
2337
2338	}	2788	}
2339	}	2789	}
2340		2790
		2791	#endif
		2792
		2793	#ifdef _WIN32
		2794	# define EV_LSTAT(p,b) _stati64 (p, b)
		2795	#else
		2796	# define EV_LSTAT(p,b) lstat (p, b)
2341	#endif	2797	#endif
2342		2798
2343	void	2799	void
2344	ev_stat_stat (EV_P_ ev_stat *w)	2800	ev_stat_stat (EV_P_ ev_stat *w)
2345	{	2801	{
…		…
2372	|| w->prev.st_atime != w->attr.st_atime	2828	|| w->prev.st_atime != w->attr.st_atime
2373	|| w->prev.st_mtime != w->attr.st_mtime	2829	|| w->prev.st_mtime != w->attr.st_mtime
2374	|| w->prev.st_ctime != w->attr.st_ctime	2830	|| w->prev.st_ctime != w->attr.st_ctime
2375	) {	2831	) {
2376	#if EV_USE_INOTIFY	2832	#if EV_USE_INOTIFY
		2833	if (fs_fd >= 0)
		2834	{
2377	infy_del (EV_A_ w);	2835	infy_del (EV_A_ w);
2378	infy_add (EV_A_ w);	2836	infy_add (EV_A_ w);
2379	ev_stat_stat (EV_A_ w); /* avoid race... */	2837	ev_stat_stat (EV_A_ w); /* avoid race... */
		2838	}
2380	#endif	2839	#endif
2381		2840
2382	ev_feed_event (EV_A_ w, EV_STAT);	2841	ev_feed_event (EV_A_ w, EV_STAT);
2383	}	2842	}
2384	}	2843	}
…		…
2387	ev_stat_start (EV_P_ ev_stat *w)	2846	ev_stat_start (EV_P_ ev_stat *w)
2388	{	2847	{
2389	if (expect_false (ev_is_active (w)))	2848	if (expect_false (ev_is_active (w)))
2390	return;	2849	return;
2391		2850
2392	/* since we use memcmp, we need to clear any padding data etc. */
2393	memset (&w->prev, 0, sizeof (ev_statdata));
2394	memset (&w->attr, 0, sizeof (ev_statdata));
2395
2396	ev_stat_stat (EV_A_ w);	2851	ev_stat_stat (EV_A_ w);
2397		2852
		2853	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2398	if (w->interval < MIN_STAT_INTERVAL)	2854	w->interval = MIN_STAT_INTERVAL;
2399	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2400		2855
2401	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2856	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2402	ev_set_priority (&w->timer, ev_priority (w));	2857	ev_set_priority (&w->timer, ev_priority (w));
2403		2858
2404	#if EV_USE_INOTIFY	2859	#if EV_USE_INOTIFY
2405	infy_init (EV_A);	2860	infy_init (EV_A);
2406		2861
2407	if (fs_fd >= 0)	2862	if (fs_fd >= 0)
2408	infy_add (EV_A_ w);	2863	infy_add (EV_A_ w);
2409	else	2864	else
2410	#endif	2865	#endif
2411	ev_timer_start (EV_A_ &w->timer);	2866	ev_timer_again (EV_A_ &w->timer);
2412		2867
2413	ev_start (EV_A_ (W)w, 1);	2868	ev_start (EV_A_ (W)w, 1);
		2869
		2870	EV_FREQUENT_CHECK;
2414	}	2871	}
2415		2872
2416	void	2873	void
2417	ev_stat_stop (EV_P_ ev_stat *w)	2874	ev_stat_stop (EV_P_ ev_stat *w)
2418	{	2875	{
2419	clear_pending (EV_A_ (W)w);	2876	clear_pending (EV_A_ (W)w);
2420	if (expect_false (!ev_is_active (w)))	2877	if (expect_false (!ev_is_active (w)))
2421	return;	2878	return;
2422		2879
		2880	EV_FREQUENT_CHECK;
		2881
2423	#if EV_USE_INOTIFY	2882	#if EV_USE_INOTIFY
2424	infy_del (EV_A_ w);	2883	infy_del (EV_A_ w);
2425	#endif	2884	#endif
2426	ev_timer_stop (EV_A_ &w->timer);	2885	ev_timer_stop (EV_A_ &w->timer);
2427		2886
2428	ev_stop (EV_A_ (W)w);	2887	ev_stop (EV_A_ (W)w);
		2888
		2889	EV_FREQUENT_CHECK;
2429	}	2890	}
2430	#endif	2891	#endif
2431		2892
2432	#if EV_IDLE_ENABLE	2893	#if EV_IDLE_ENABLE
2433	void	2894	void
…		…
2435	{	2896	{
2436	if (expect_false (ev_is_active (w)))	2897	if (expect_false (ev_is_active (w)))
2437	return;	2898	return;
2438		2899
2439	pri_adjust (EV_A_ (W)w);	2900	pri_adjust (EV_A_ (W)w);
		2901
		2902	EV_FREQUENT_CHECK;
2440		2903
2441	{	2904	{
2442	int active = ++idlecnt [ABSPRI (w)];	2905	int active = ++idlecnt [ABSPRI (w)];
2443		2906
2444	++idleall;	2907	++idleall;
2445	ev_start (EV_A_ (W)w, active);	2908	ev_start (EV_A_ (W)w, active);
2446		2909
2447	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	2910	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2448	idles [ABSPRI (w)][active - 1] = w;	2911	idles [ABSPRI (w)][active - 1] = w;
2449	}	2912	}
		2913
		2914	EV_FREQUENT_CHECK;
2450	}	2915	}
2451		2916
2452	void	2917	void
2453	ev_idle_stop (EV_P_ ev_idle *w)	2918	ev_idle_stop (EV_P_ ev_idle *w)
2454	{	2919	{
2455	clear_pending (EV_A_ (W)w);	2920	clear_pending (EV_A_ (W)w);
2456	if (expect_false (!ev_is_active (w)))	2921	if (expect_false (!ev_is_active (w)))
2457	return;	2922	return;
2458		2923
		2924	EV_FREQUENT_CHECK;
		2925
2459	{	2926	{
2460	int active = ev_active (w);	2927	int active = ev_active (w);
2461		2928
2462	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	2929	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2463	ev_active (idles [ABSPRI (w)][active - 1]) = active;	2930	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2464		2931
2465	ev_stop (EV_A_ (W)w);	2932	ev_stop (EV_A_ (W)w);
2466	--idleall;	2933	--idleall;
2467	}	2934	}
		2935
		2936	EV_FREQUENT_CHECK;
2468	}	2937	}
2469	#endif	2938	#endif
2470		2939
2471	void	2940	void
2472	ev_prepare_start (EV_P_ ev_prepare *w)	2941	ev_prepare_start (EV_P_ ev_prepare *w)
2473	{	2942	{
2474	if (expect_false (ev_is_active (w)))	2943	if (expect_false (ev_is_active (w)))
2475	return;	2944	return;
		2945
		2946	EV_FREQUENT_CHECK;
2476		2947
2477	ev_start (EV_A_ (W)w, ++preparecnt);	2948	ev_start (EV_A_ (W)w, ++preparecnt);
2478	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	2949	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2479	prepares [preparecnt - 1] = w;	2950	prepares [preparecnt - 1] = w;
		2951
		2952	EV_FREQUENT_CHECK;
2480	}	2953	}
2481		2954
2482	void	2955	void
2483	ev_prepare_stop (EV_P_ ev_prepare *w)	2956	ev_prepare_stop (EV_P_ ev_prepare *w)
2484	{	2957	{
2485	clear_pending (EV_A_ (W)w);	2958	clear_pending (EV_A_ (W)w);
2486	if (expect_false (!ev_is_active (w)))	2959	if (expect_false (!ev_is_active (w)))
2487	return;	2960	return;
2488		2961
		2962	EV_FREQUENT_CHECK;
		2963
2489	{	2964	{
2490	int active = ev_active (w);	2965	int active = ev_active (w);
2491		2966
2492	prepares [active - 1] = prepares [--preparecnt];	2967	prepares [active - 1] = prepares [--preparecnt];
2493	ev_active (prepares [active - 1]) = active;	2968	ev_active (prepares [active - 1]) = active;
2494	}	2969	}
2495		2970
2496	ev_stop (EV_A_ (W)w);	2971	ev_stop (EV_A_ (W)w);
		2972
		2973	EV_FREQUENT_CHECK;
2497	}	2974	}
2498		2975
2499	void	2976	void
2500	ev_check_start (EV_P_ ev_check *w)	2977	ev_check_start (EV_P_ ev_check *w)
2501	{	2978	{
2502	if (expect_false (ev_is_active (w)))	2979	if (expect_false (ev_is_active (w)))
2503	return;	2980	return;
		2981
		2982	EV_FREQUENT_CHECK;
2504		2983
2505	ev_start (EV_A_ (W)w, ++checkcnt);	2984	ev_start (EV_A_ (W)w, ++checkcnt);
2506	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	2985	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2507	checks [checkcnt - 1] = w;	2986	checks [checkcnt - 1] = w;
		2987
		2988	EV_FREQUENT_CHECK;
2508	}	2989	}
2509		2990
2510	void	2991	void
2511	ev_check_stop (EV_P_ ev_check *w)	2992	ev_check_stop (EV_P_ ev_check *w)
2512	{	2993	{
2513	clear_pending (EV_A_ (W)w);	2994	clear_pending (EV_A_ (W)w);
2514	if (expect_false (!ev_is_active (w)))	2995	if (expect_false (!ev_is_active (w)))
2515	return;	2996	return;
2516		2997
		2998	EV_FREQUENT_CHECK;
		2999
2517	{	3000	{
2518	int active = ev_active (w);	3001	int active = ev_active (w);
2519		3002
2520	checks [active - 1] = checks [--checkcnt];	3003	checks [active - 1] = checks [--checkcnt];
2521	ev_active (checks [active - 1]) = active;	3004	ev_active (checks [active - 1]) = active;
2522	}	3005	}
2523		3006
2524	ev_stop (EV_A_ (W)w);	3007	ev_stop (EV_A_ (W)w);
		3008
		3009	EV_FREQUENT_CHECK;
2525	}	3010	}
2526		3011
2527	#if EV_EMBED_ENABLE	3012	#if EV_EMBED_ENABLE
2528	void noinline	3013	void noinline
2529	ev_embed_sweep (EV_P_ ev_embed *w)	3014	ev_embed_sweep (EV_P_ ev_embed *w)
…		…
2556	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3041	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2557	}	3042	}
2558	}	3043	}
2559	}	3044	}
2560		3045
		3046	static void
		3047	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3048	{
		3049	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3050
		3051	ev_embed_stop (EV_A_ w);
		3052
		3053	{
		3054	struct ev_loop *loop = w->other;
		3055
		3056	ev_loop_fork (EV_A);
		3057	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3058	}
		3059
		3060	ev_embed_start (EV_A_ w);
		3061	}
		3062
2561	#if 0	3063	#if 0
2562	static void	3064	static void
2563	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3065	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2564	{	3066	{
2565	ev_idle_stop (EV_A_ idle);	3067	ev_idle_stop (EV_A_ idle);
…		…
2572	if (expect_false (ev_is_active (w)))	3074	if (expect_false (ev_is_active (w)))
2573	return;	3075	return;
2574		3076
2575	{	3077	{
2576	struct ev_loop *loop = w->other;	3078	struct ev_loop *loop = w->other;
2577	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3079	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2578	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3080	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2579	}	3081	}
		3082
		3083	EV_FREQUENT_CHECK;
2580		3084
2581	ev_set_priority (&w->io, ev_priority (w));	3085	ev_set_priority (&w->io, ev_priority (w));
2582	ev_io_start (EV_A_ &w->io);	3086	ev_io_start (EV_A_ &w->io);
2583		3087
2584	ev_prepare_init (&w->prepare, embed_prepare_cb);	3088	ev_prepare_init (&w->prepare, embed_prepare_cb);
2585	ev_set_priority (&w->prepare, EV_MINPRI);	3089	ev_set_priority (&w->prepare, EV_MINPRI);
2586	ev_prepare_start (EV_A_ &w->prepare);	3090	ev_prepare_start (EV_A_ &w->prepare);
2587		3091
		3092	ev_fork_init (&w->fork, embed_fork_cb);
		3093	ev_fork_start (EV_A_ &w->fork);
		3094
2588	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3095	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2589		3096
2590	ev_start (EV_A_ (W)w, 1);	3097	ev_start (EV_A_ (W)w, 1);
		3098
		3099	EV_FREQUENT_CHECK;
2591	}	3100	}
2592		3101
2593	void	3102	void
2594	ev_embed_stop (EV_P_ ev_embed *w)	3103	ev_embed_stop (EV_P_ ev_embed *w)
2595	{	3104	{
2596	clear_pending (EV_A_ (W)w);	3105	clear_pending (EV_A_ (W)w);
2597	if (expect_false (!ev_is_active (w)))	3106	if (expect_false (!ev_is_active (w)))
2598	return;	3107	return;
2599		3108
		3109	EV_FREQUENT_CHECK;
		3110
2600	ev_io_stop (EV_A_ &w->io);	3111	ev_io_stop (EV_A_ &w->io);
2601	ev_prepare_stop (EV_A_ &w->prepare);	3112	ev_prepare_stop (EV_A_ &w->prepare);
		3113	ev_fork_stop (EV_A_ &w->fork);
2602		3114
2603	ev_stop (EV_A_ (W)w);	3115	EV_FREQUENT_CHECK;
2604	}	3116	}
2605	#endif	3117	#endif
2606		3118
2607	#if EV_FORK_ENABLE	3119	#if EV_FORK_ENABLE
2608	void	3120	void
2609	ev_fork_start (EV_P_ ev_fork *w)	3121	ev_fork_start (EV_P_ ev_fork *w)
2610	{	3122	{
2611	if (expect_false (ev_is_active (w)))	3123	if (expect_false (ev_is_active (w)))
2612	return;	3124	return;
		3125
		3126	EV_FREQUENT_CHECK;
2613		3127
2614	ev_start (EV_A_ (W)w, ++forkcnt);	3128	ev_start (EV_A_ (W)w, ++forkcnt);
2615	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3129	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2616	forks [forkcnt - 1] = w;	3130	forks [forkcnt - 1] = w;
		3131
		3132	EV_FREQUENT_CHECK;
2617	}	3133	}
2618		3134
2619	void	3135	void
2620	ev_fork_stop (EV_P_ ev_fork *w)	3136	ev_fork_stop (EV_P_ ev_fork *w)
2621	{	3137	{
2622	clear_pending (EV_A_ (W)w);	3138	clear_pending (EV_A_ (W)w);
2623	if (expect_false (!ev_is_active (w)))	3139	if (expect_false (!ev_is_active (w)))
2624	return;	3140	return;
2625		3141
		3142	EV_FREQUENT_CHECK;
		3143
2626	{	3144	{
2627	int active = ev_active (w);	3145	int active = ev_active (w);
2628		3146
2629	forks [active - 1] = forks [--forkcnt];	3147	forks [active - 1] = forks [--forkcnt];
2630	ev_active (forks [active - 1]) = active;	3148	ev_active (forks [active - 1]) = active;
2631	}	3149	}
2632		3150
2633	ev_stop (EV_A_ (W)w);	3151	ev_stop (EV_A_ (W)w);
		3152
		3153	EV_FREQUENT_CHECK;
2634	}	3154	}
2635	#endif	3155	#endif
2636		3156
2637	#if EV_ASYNC_ENABLE	3157	#if EV_ASYNC_ENABLE
2638	void	3158	void
…		…
2640	{	3160	{
2641	if (expect_false (ev_is_active (w)))	3161	if (expect_false (ev_is_active (w)))
2642	return;	3162	return;
2643		3163
2644	evpipe_init (EV_A);	3164	evpipe_init (EV_A);
		3165
		3166	EV_FREQUENT_CHECK;
2645		3167
2646	ev_start (EV_A_ (W)w, ++asynccnt);	3168	ev_start (EV_A_ (W)w, ++asynccnt);
2647	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);	3169	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2648	asyncs [asynccnt - 1] = w;	3170	asyncs [asynccnt - 1] = w;
		3171
		3172	EV_FREQUENT_CHECK;
2649	}	3173	}
2650		3174
2651	void	3175	void
2652	ev_async_stop (EV_P_ ev_async *w)	3176	ev_async_stop (EV_P_ ev_async *w)
2653	{	3177	{
2654	clear_pending (EV_A_ (W)w);	3178	clear_pending (EV_A_ (W)w);
2655	if (expect_false (!ev_is_active (w)))	3179	if (expect_false (!ev_is_active (w)))
2656	return;	3180	return;
2657		3181
		3182	EV_FREQUENT_CHECK;
		3183
2658	{	3184	{
2659	int active = ev_active (w);	3185	int active = ev_active (w);
2660		3186
2661	asyncs [active - 1] = asyncs [--asynccnt];	3187	asyncs [active - 1] = asyncs [--asynccnt];
2662	ev_active (asyncs [active - 1]) = active;	3188	ev_active (asyncs [active - 1]) = active;
2663	}	3189	}
2664		3190
2665	ev_stop (EV_A_ (W)w);	3191	ev_stop (EV_A_ (W)w);
		3192
		3193	EV_FREQUENT_CHECK;
2666	}	3194	}
2667		3195
2668	void	3196	void
2669	ev_async_send (EV_P_ ev_async *w)	3197	ev_async_send (EV_P_ ev_async *w)
2670	{	3198	{
…		…
2687	once_cb (EV_P_ struct ev_once *once, int revents)	3215	once_cb (EV_P_ struct ev_once *once, int revents)
2688	{	3216	{
2689	void (*cb)(int revents, void *arg) = once->cb;	3217	void (*cb)(int revents, void *arg) = once->cb;
2690	void *arg = once->arg;	3218	void *arg = once->arg;
2691		3219
2692	ev_io_stop (EV_A_ &once->io);	3220	ev_io_stop (EV_A_ &once->io);
2693	ev_timer_stop (EV_A_ &once->to);	3221	ev_timer_stop (EV_A_ &once->to);
2694	ev_free (once);	3222	ev_free (once);
2695		3223
2696	cb (revents, arg);	3224	cb (revents, arg);
2697	}	3225	}
2698		3226
2699	static void	3227	static void
2700	once_cb_io (EV_P_ ev_io *w, int revents)	3228	once_cb_io (EV_P_ ev_io *w, int revents)
2701	{	3229	{
2702	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3230	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3231
		3232	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2703	}	3233	}
2704		3234
2705	static void	3235	static void
2706	once_cb_to (EV_P_ ev_timer *w, int revents)	3236	once_cb_to (EV_P_ ev_timer *w, int revents)
2707	{	3237	{
2708	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3238	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3239
		3240	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2709	}	3241	}
2710		3242
2711	void	3243	void
2712	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3244	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2713	{	3245	{
…		…
2735	ev_timer_set (&once->to, timeout, 0.);	3267	ev_timer_set (&once->to, timeout, 0.);
2736	ev_timer_start (EV_A_ &once->to);	3268	ev_timer_start (EV_A_ &once->to);
2737	}	3269	}
2738	}	3270	}
2739		3271
		3272	/*****************************************************************************/
		3273
		3274	#if EV_WALK_ENABLE
		3275	void
		3276	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3277	{
		3278	int i, j;
		3279	ev_watcher_list *wl, *wn;
		3280
		3281	if (types & (EV_IO | EV_EMBED))
		3282	for (i = 0; i < anfdmax; ++i)
		3283	for (wl = anfds [i].head; wl; )
		3284	{
		3285	wn = wl->next;
		3286
		3287	#if EV_EMBED_ENABLE
		3288	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3289	{
		3290	if (types & EV_EMBED)
		3291	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3292	}
		3293	else
		3294	#endif
		3295	#if EV_USE_INOTIFY
		3296	if (ev_cb ((ev_io *)wl) == infy_cb)
		3297	;
		3298	else
		3299	#endif
		3300	if ((ev_io *)wl != &pipe_w)
		3301	if (types & EV_IO)
		3302	cb (EV_A_ EV_IO, wl);
		3303
		3304	wl = wn;
		3305	}
		3306
		3307	if (types & (EV_TIMER | EV_STAT))
		3308	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3309	#if EV_STAT_ENABLE
		3310	/*TODO: timer is not always active*/
		3311	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3312	{
		3313	if (types & EV_STAT)
		3314	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3315	}
		3316	else
		3317	#endif
		3318	if (types & EV_TIMER)
		3319	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3320
		3321	#if EV_PERIODIC_ENABLE
		3322	if (types & EV_PERIODIC)
		3323	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3324	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3325	#endif
		3326
		3327	#if EV_IDLE_ENABLE
		3328	if (types & EV_IDLE)
		3329	for (j = NUMPRI; i--; )
		3330	for (i = idlecnt [j]; i--; )
		3331	cb (EV_A_ EV_IDLE, idles [j][i]);
		3332	#endif
		3333
		3334	#if EV_FORK_ENABLE
		3335	if (types & EV_FORK)
		3336	for (i = forkcnt; i--; )
		3337	if (ev_cb (forks [i]) != embed_fork_cb)
		3338	cb (EV_A_ EV_FORK, forks [i]);
		3339	#endif
		3340
		3341	#if EV_ASYNC_ENABLE
		3342	if (types & EV_ASYNC)
		3343	for (i = asynccnt; i--; )
		3344	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3345	#endif
		3346
		3347	if (types & EV_PREPARE)
		3348	for (i = preparecnt; i--; )
		3349	#if EV_EMBED_ENABLE
		3350	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3351	#endif
		3352	cb (EV_A_ EV_PREPARE, prepares [i]);
		3353
		3354	if (types & EV_CHECK)
		3355	for (i = checkcnt; i--; )
		3356	cb (EV_A_ EV_CHECK, checks [i]);
		3357
		3358	if (types & EV_SIGNAL)
		3359	for (i = 0; i < signalmax; ++i)
		3360	for (wl = signals [i].head; wl; )
		3361	{
		3362	wn = wl->next;
		3363	cb (EV_A_ EV_SIGNAL, wl);
		3364	wl = wn;
		3365	}
		3366
		3367	if (types & EV_CHILD)
		3368	for (i = EV_PID_HASHSIZE; i--; )
		3369	for (wl = childs [i]; wl; )
		3370	{
		3371	wn = wl->next;
		3372	cb (EV_A_ EV_CHILD, wl);
		3373	wl = wn;
		3374	}
		3375	/* EV_STAT 0x00001000 /* stat data changed */
		3376	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3377	}
		3378	#endif
		3379
2740	#if EV_MULTIPLICITY	3380	#if EV_MULTIPLICITY
2741	#include "ev_wrap.h"	3381	#include "ev_wrap.h"
2742	#endif	3382	#endif
2743		3383
2744	#ifdef __cplusplus	3384	#ifdef __cplusplus

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