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Comparing libev/ev.c (file contents):
Revision 1.244 by root, Tue May 20 23:49:41 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
240	#ifndef EV_USE_4HEAP	281	#ifndef EV_USE_4HEAP
241	# define EV_USE_4HEAP !EV_MINIMAL	282	# define EV_USE_4HEAP !EV_MINIMAL
242	#endif	283	#endif
243		284
244	#ifndef EV_HEAP_CACHE_AT	285	#ifndef EV_HEAP_CACHE_AT
245	# define EV_HEAP_CACHE_AT !EV_MINIMAL	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
246	#endif	301	#endif
247		302
248	/* 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 */
249		304
250	#ifndef CLOCK_MONOTONIC	305	#ifndef CLOCK_MONOTONIC
…		…
267	# include <sys/select.h>	322	# include <sys/select.h>
268	# endif	323	# endif
269	#endif	324	#endif
270		325
271	#if EV_USE_INOTIFY	326	#if EV_USE_INOTIFY
		327	# include <sys/utsname.h>
		328	# include <sys/statfs.h>
272	# 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
273	#endif	335	#endif
274		336
275	#if EV_SELECT_IS_WINSOCKET	337	#if EV_SELECT_IS_WINSOCKET
276	# include <winsock.h>	338	# include <winsock.h>
277	#endif	339	#endif
…		…
287	}	349	}
288	# endif	350	# endif
289	#endif	351	#endif
290		352
291	/**/	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
292		360
293	/*	361	/*
294	* This is used to avoid floating point rounding problems.	362	* This is used to avoid floating point rounding problems.
295	* It is added to ev_rt_now when scheduling periodics	363	* It is added to ev_rt_now when scheduling periodics
296	* to ensure progress, time-wise, even when rounding	364	* to ensure progress, time-wise, even when rounding
…		…
323	# define inline_speed static noinline	391	# define inline_speed static noinline
324	#else	392	#else
325	# define inline_speed static inline	393	# define inline_speed static inline
326	#endif	394	#endif
327		395
328	#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
329	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	401	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		402	#endif
330		403
331	#define EMPTY /* required for microsofts broken pseudo-c compiler */	404	#define EMPTY /* required for microsofts broken pseudo-c compiler */
332	#define EMPTY2(a,b) /* used to suppress some warnings */	405	#define EMPTY2(a,b) /* used to suppress some warnings */
333		406
334	typedef ev_watcher *W;	407	typedef ev_watcher *W;
…		…
336	typedef ev_watcher_time *WT;	409	typedef ev_watcher_time *WT;
337		410
338	#define ev_active(w) ((W)(w))->active	411	#define ev_active(w) ((W)(w))->active
339	#define ev_at(w) ((WT)(w))->at	412	#define ev_at(w) ((WT)(w))->at
340		413
341	#if EV_USE_MONOTONIC	414	#if EV_USE_REALTIME
342	/* 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 */
343	/* 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
344	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? */
345	#endif	422	#endif
346		423
347	#ifdef _WIN32	424	#ifdef _WIN32
348	# include "ev_win32.c"	425	# include "ev_win32.c"
…		…
357	{	434	{
358	syserr_cb = cb;	435	syserr_cb = cb;
359	}	436	}
360		437
361	static void noinline	438	static void noinline
362	syserr (const char *msg)	439	ev_syserr (const char *msg)
363	{	440	{
364	if (!msg)	441	if (!msg)
365	msg = "(libev) system error";	442	msg = "(libev) system error";
366		443
367	if (syserr_cb)	444	if (syserr_cb)
…		…
413	#define ev_malloc(size) ev_realloc (0, (size))	490	#define ev_malloc(size) ev_realloc (0, (size))
414	#define ev_free(ptr) ev_realloc ((ptr), 0)	491	#define ev_free(ptr) ev_realloc ((ptr), 0)
415		492
416	/*****************************************************************************/	493	/*****************************************************************************/
417		494
		495	/* file descriptor info structure */
418	typedef struct	496	typedef struct
419	{	497	{
420	WL head;	498	WL head;
421	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 */
422	unsigned char reify;	502	unsigned char unused;
		503	#if EV_USE_EPOLL
		504	unsigned int egen; /* generation counter to counter epoll bugs */
		505	#endif
423	#if EV_SELECT_IS_WINSOCKET	506	#if EV_SELECT_IS_WINSOCKET
424	SOCKET handle;	507	SOCKET handle;
425	#endif	508	#endif
426	} ANFD;	509	} ANFD;
427		510
		511	/* stores the pending event set for a given watcher */
428	typedef struct	512	typedef struct
429	{	513	{
430	W w;	514	W w;
431	int events;	515	int events; /* the pending event set for the given watcher */
432	} ANPENDING;	516	} ANPENDING;
433		517
434	#if EV_USE_INOTIFY	518	#if EV_USE_INOTIFY
435	/* hash table entry per inotify-id */	519	/* hash table entry per inotify-id */
436	typedef struct	520	typedef struct
…		…
439	} ANFS;	523	} ANFS;
440	#endif	524	#endif
441		525
442	/* Heap Entry */	526	/* Heap Entry */
443	#if EV_HEAP_CACHE_AT	527	#if EV_HEAP_CACHE_AT
		528	/* a heap element */
444	typedef struct {	529	typedef struct {
445	ev_tstamp at;	530	ev_tstamp at;
446	WT w;	531	WT w;
447	} ANHE;	532	} ANHE;
448		533
449	#define ANHE_w(he) (he).w /* access watcher, read-write */	534	#define ANHE_w(he) (he).w /* access watcher, read-write */
450	#define ANHE_at(he) (he).at /* access cached at, read-only */	535	#define ANHE_at(he) (he).at /* access cached at, read-only */
451	#define ANHE_at_set(he) (he).at = (he).w->at /* update at from watcher */	536	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
452	#else	537	#else
		538	/* a heap element */
453	typedef WT ANHE;	539	typedef WT ANHE;
454		540
455	#define ANHE_w(he) (he)	541	#define ANHE_w(he) (he)
456	#define ANHE_at(he) (he)->at	542	#define ANHE_at(he) (he)->at
457	#define ANHE_at_set(he)	543	#define ANHE_at_cache(he)
458	#endif	544	#endif
459		545
460	#if EV_MULTIPLICITY	546	#if EV_MULTIPLICITY
461		547
462	struct ev_loop	548	struct ev_loop
…		…
483		569
484	#endif	570	#endif
485		571
486	/*****************************************************************************/	572	/*****************************************************************************/
487		573
		574	#ifndef EV_HAVE_EV_TIME
488	ev_tstamp	575	ev_tstamp
489	ev_time (void)	576	ev_time (void)
490	{	577	{
491	#if EV_USE_REALTIME	578	#if EV_USE_REALTIME
		579	if (expect_true (have_realtime))
		580	{
492	struct timespec ts;	581	struct timespec ts;
493	clock_gettime (CLOCK_REALTIME, &ts);	582	clock_gettime (CLOCK_REALTIME, &ts);
494	return ts.tv_sec + ts.tv_nsec * 1e-9;	583	return ts.tv_sec + ts.tv_nsec * 1e-9;
495	#else	584	}
		585	#endif
		586
496	struct timeval tv;	587	struct timeval tv;
497	gettimeofday (&tv, 0);	588	gettimeofday (&tv, 0);
498	return tv.tv_sec + tv.tv_usec * 1e-6;	589	return tv.tv_sec + tv.tv_usec * 1e-6;
499	#endif
500	}	590	}
		591	#endif
501		592
502	ev_tstamp inline_size	593	inline_size ev_tstamp
503	get_clock (void)	594	get_clock (void)
504	{	595	{
505	#if EV_USE_MONOTONIC	596	#if EV_USE_MONOTONIC
506	if (expect_true (have_monotonic))	597	if (expect_true (have_monotonic))
507	{	598	{
…		…
540	struct timeval tv;	631	struct timeval tv;
541		632
542	tv.tv_sec = (time_t)delay;	633	tv.tv_sec = (time_t)delay;
543	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	634	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
544		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 */
545	select (0, 0, 0, 0, &tv);	639	select (0, 0, 0, 0, &tv);
546	#endif	640	#endif
547	}	641	}
548	}	642	}
549		643
550	/*****************************************************************************/	644	/*****************************************************************************/
551		645
552	#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 */
553		647
554	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
555	array_nextsize (int elem, int cur, int cnt)	651	array_nextsize (int elem, int cur, int cnt)
556	{	652	{
557	int ncur = cur + 1;	653	int ncur = cur + 1;
558		654
559	do	655	do
…		…
576	array_realloc (int elem, void *base, int *cur, int cnt)	672	array_realloc (int elem, void *base, int *cur, int cnt)
577	{	673	{
578	*cur = array_nextsize (elem, *cur, cnt);	674	*cur = array_nextsize (elem, *cur, cnt);
579	return ev_realloc (base, elem * *cur);	675	return ev_realloc (base, elem * *cur);
580	}	676	}
		677
		678	#define array_init_zero(base,count) \
		679	memset ((void *)(base), 0, sizeof (*(base)) * (count))
581		680
582	#define array_needsize(type,base,cur,cnt,init) \	681	#define array_needsize(type,base,cur,cnt,init) \
583	if (expect_false ((cnt) > (cur))) \	682	if (expect_false ((cnt) > (cur))) \
584	{ \	683	{ \
585	int ocur_ = (cur); \	684	int ocur_ = (cur); \
…		…
597	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	696	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
598	}	697	}
599	#endif	698	#endif
600		699
601	#define array_free(stem, idx) \	700	#define array_free(stem, idx) \
602	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
603		702
604	/*****************************************************************************/	703	/*****************************************************************************/
		704
		705	/* dummy callback for pending events */
		706	static void noinline
		707	pendingcb (EV_P_ ev_prepare *w, int revents)
		708	{
		709	}
605		710
606	void noinline	711	void noinline
607	ev_feed_event (EV_P_ void *w, int revents)	712	ev_feed_event (EV_P_ void *w, int revents)
608	{	713	{
609	W w_ = (W)w;	714	W w_ = (W)w;
…		…
618	pendings [pri][w_->pending - 1].w = w_;	723	pendings [pri][w_->pending - 1].w = w_;
619	pendings [pri][w_->pending - 1].events = revents;	724	pendings [pri][w_->pending - 1].events = revents;
620	}	725	}
621	}	726	}
622		727
623	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
624	queue_events (EV_P_ W *events, int eventcnt, int type)	744	queue_events (EV_P_ W *events, int eventcnt, int type)
625	{	745	{
626	int i;	746	int i;
627		747
628	for (i = 0; i < eventcnt; ++i)	748	for (i = 0; i < eventcnt; ++i)
629	ev_feed_event (EV_A_ events [i], type);	749	ev_feed_event (EV_A_ events [i], type);
630	}	750	}
631		751
632	/*****************************************************************************/	752	/*****************************************************************************/
633		753
634	void inline_size	754	inline_speed void
635	anfds_init (ANFD *base, int count)
636	{
637	while (count--)
638	{
639	base->head = 0;
640	base->events = EV_NONE;
641	base->reify = 0;
642
643	++base;
644	}
645	}
646
647	void inline_speed
648	fd_event (EV_P_ int fd, int revents)	755	fd_event (EV_P_ int fd, int revents)
649	{	756	{
650	ANFD *anfd = anfds + fd;	757	ANFD *anfd = anfds + fd;
651	ev_io *w;	758	ev_io *w;
652		759
…		…
664	{	771	{
665	if (fd >= 0 && fd < anfdmax)	772	if (fd >= 0 && fd < anfdmax)
666	fd_event (EV_A_ fd, revents);	773	fd_event (EV_A_ fd, revents);
667	}	774	}
668		775
669	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
670	fd_reify (EV_P)	779	fd_reify (EV_P)
671	{	780	{
672	int i;	781	int i;
673		782
674	for (i = 0; i < fdchangecnt; ++i)	783	for (i = 0; i < fdchangecnt; ++i)
…		…
683	events |= (unsigned char)w->events;	792	events |= (unsigned char)w->events;
684		793
685	#if EV_SELECT_IS_WINSOCKET	794	#if EV_SELECT_IS_WINSOCKET
686	if (events)	795	if (events)
687	{	796	{
688	unsigned long argp;	797	unsigned long arg;
689	#ifdef EV_FD_TO_WIN32_HANDLE	798	#ifdef EV_FD_TO_WIN32_HANDLE
690	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	799	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
691	#else	800	#else
692	anfd->handle = _get_osfhandle (fd);	801	anfd->handle = _get_osfhandle (fd);
693	#endif	802	#endif
694	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));
695	}	804	}
696	#endif	805	#endif
697		806
698	{	807	{
699	unsigned char o_events = anfd->events;	808	unsigned char o_events = anfd->events;
700	unsigned char o_reify = anfd->reify;	809	unsigned char o_reify = anfd->reify;
701		810
702	anfd->reify = 0;	811	anfd->reify = 0;
703	anfd->events = events;	812	anfd->events = events;
704		813
705	if (o_events != events || o_reify & EV_IOFDSET)	814	if (o_events != events || o_reify & EV__IOFDSET)
706	backend_modify (EV_A_ fd, o_events, events);	815	backend_modify (EV_A_ fd, o_events, events);
707	}	816	}
708	}	817	}
709		818
710	fdchangecnt = 0;	819	fdchangecnt = 0;
711	}	820	}
712		821
713	void inline_size	822	/* something about the given fd changed */
		823	inline_size void
714	fd_change (EV_P_ int fd, int flags)	824	fd_change (EV_P_ int fd, int flags)
715	{	825	{
716	unsigned char reify = anfds [fd].reify;	826	unsigned char reify = anfds [fd].reify;
717	anfds [fd].reify |= flags;	827	anfds [fd].reify |= flags;
718		828
…		…
722	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	832	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
723	fdchanges [fdchangecnt - 1] = fd;	833	fdchanges [fdchangecnt - 1] = fd;
724	}	834	}
725	}	835	}
726		836
727	void inline_speed	837	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		838	inline_speed void
728	fd_kill (EV_P_ int fd)	839	fd_kill (EV_P_ int fd)
729	{	840	{
730	ev_io *w;	841	ev_io *w;
731		842
732	while ((w = (ev_io *)anfds [fd].head))	843	while ((w = (ev_io *)anfds [fd].head))
…		…
734	ev_io_stop (EV_A_ w);	845	ev_io_stop (EV_A_ w);
735	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);
736	}	847	}
737	}	848	}
738		849
739	int inline_size	850	/* check whether the given fd is atcually valid, for error recovery */
		851	inline_size int
740	fd_valid (int fd)	852	fd_valid (int fd)
741	{	853	{
742	#ifdef _WIN32	854	#ifdef _WIN32
743	return _get_osfhandle (fd) != -1;	855	return _get_osfhandle (fd) != -1;
744	#else	856	#else
…		…
752	{	864	{
753	int fd;	865	int fd;
754		866
755	for (fd = 0; fd < anfdmax; ++fd)	867	for (fd = 0; fd < anfdmax; ++fd)
756	if (anfds [fd].events)	868	if (anfds [fd].events)
757	if (!fd_valid (fd) == -1 && errno == EBADF)	869	if (!fd_valid (fd) && errno == EBADF)
758	fd_kill (EV_A_ fd);	870	fd_kill (EV_A_ fd);
759	}	871	}
760		872
761	/* 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 */
762	static void noinline	874	static void noinline
…		…
780		892
781	for (fd = 0; fd < anfdmax; ++fd)	893	for (fd = 0; fd < anfdmax; ++fd)
782	if (anfds [fd].events)	894	if (anfds [fd].events)
783	{	895	{
784	anfds [fd].events = 0;	896	anfds [fd].events = 0;
		897	anfds [fd].emask = 0;
785	fd_change (EV_A_ fd, EV_IOFDSET | 1);	898	fd_change (EV_A_ fd, EV__IOFDSET | 1);
786	}	899	}
787	}	900	}
788		901
789	/*****************************************************************************/	902	/*****************************************************************************/
790		903
…		…
802	*/	915	*/
803	#if EV_USE_4HEAP	916	#if EV_USE_4HEAP
804		917
805	#define DHEAP 4	918	#define DHEAP 4
806	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	919	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
807		920	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
808	/* towards the root */	921	#define UPHEAP_DONE(p,k) ((p) == (k))
809	void inline_speed
810	upheap (ANHE *heap, int k)
811	{
812	ANHE he = heap [k];
813
814	for (;;)
815	{
816	int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
817
818	if (p == k || ANHE_at (heap [p]) <= ANHE_at (he))
819	break;
820
821	heap [k] = heap [p];
822	ev_active (ANHE_w (heap [k])) = k;
823	k = p;
824	}
825
826	ev_active (ANHE_w (he)) = k;
827	heap [k] = he;
828	}
829		922
830	/* away from the root */	923	/* away from the root */
831	void inline_speed	924	inline_speed void
832	downheap (ANHE *heap, int N, int k)	925	downheap (ANHE *heap, int N, int k)
833	{	926	{
834	ANHE he = heap [k];	927	ANHE he = heap [k];
835	ANHE *E = heap + N + HEAP0;	928	ANHE *E = heap + N + HEAP0;
836		929
837	for (;;)	930	for (;;)
838	{	931	{
839	ev_tstamp minat;	932	ev_tstamp minat;
840	ANHE *minpos;	933	ANHE *minpos;
841	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0;	934	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
842		935
843	// find minimum child	936	/* find minimum child */
844	if (expect_true (pos + DHEAP - 1 < E))	937	if (expect_true (pos + DHEAP - 1 < E))
845	{	938	{
846	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));	939	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
847	if (ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));	940	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
848	if (ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));	941	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
849	if (ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));	942	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
850	}	943	}
851	else if (pos < E)	944	else if (pos < E)
852	{	945	{
853	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));	946	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
854	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));	947	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
…		…
859	break;	952	break;
860		953
861	if (ANHE_at (he) <= minat)	954	if (ANHE_at (he) <= minat)
862	break;	955	break;
863		956
		957	heap [k] = *minpos;
864	ev_active (ANHE_w (*minpos)) = k;	958	ev_active (ANHE_w (*minpos)) = k;
865	heap [k] = *minpos;
866		959
867	k = minpos - heap;	960	k = minpos - heap;
868	}	961	}
869		962
		963	heap [k] = he;
870	ev_active (ANHE_w (he)) = k;	964	ev_active (ANHE_w (he)) = k;
871	heap [k] = he;
872	}	965	}
873		966
874	#else // 4HEAP	967	#else /* 4HEAP */
875		968
876	#define HEAP0 1	969	#define HEAP0 1
		970	#define HPARENT(k) ((k) >> 1)
		971	#define UPHEAP_DONE(p,k) (!(p))
877		972
878	/* towards the root */	973	/* away from the root */
879	void inline_speed	974	inline_speed void
880	upheap (ANHE *heap, int k)	975	downheap (ANHE *heap, int N, int k)
881	{	976	{
882	ANHE he = heap [k];	977	ANHE he = heap [k];
883		978
884	for (;;)	979	for (;;)
885	{	980	{
886	int p = k >> 1;	981	int c = k << 1;
887		982
888	/* maybe we could use a dummy element at heap [0]? */	983	if (c > N + HEAP0 - 1)
889	if (!p || ANHE_at (heap [p]) <= ANHE_at (he))
890	break;	984	break;
891		985
892	heap [k] = heap [p];
893	ev_active (ANHE_w (heap [k])) = k;
894	k = p;
895	}
896
897	heap [k] = he;
898	ev_active (ANHE_w (heap [k])) = k;
899	}
900
901	/* away from the root */
902	void inline_speed
903	downheap (ANHE *heap, int N, int k)
904	{
905	ANHE he = heap [k];
906
907	for (;;)
908	{
909	int c = k << 1;
910
911	if (c > N)
912	break;
913
914	c += c + 1 < N && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])	986	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
915	? 1 : 0;	987	? 1 : 0;
916		988
917	if (ANHE_at (he) <= ANHE_at (heap [c]))	989	if (ANHE_at (he) <= ANHE_at (heap [c]))
918	break;	990	break;
919		991
…		…
926	heap [k] = he;	998	heap [k] = he;
927	ev_active (ANHE_w (he)) = k;	999	ev_active (ANHE_w (he)) = k;
928	}	1000	}
929	#endif	1001	#endif
930		1002
931	void inline_size	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];
		1017	ev_active (ANHE_w (heap [k])) = k;
		1018	k = p;
		1019	}
		1020
		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
932	adjustheap (ANHE *heap, int N, int k)	1027	adjustheap (ANHE *heap, int N, int k)
933	{	1028	{
		1029	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
934	upheap (heap, k);	1030	upheap (heap, k);
		1031	else
935	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);
936	}	1045	}
937		1046
938	/*****************************************************************************/	1047	/*****************************************************************************/
939		1048
		1049	/* associate signal watchers to a signal signal */
940	typedef struct	1050	typedef struct
941	{	1051	{
942	WL head;	1052	WL head;
943	EV_ATOMIC_T gotsig;	1053	EV_ATOMIC_T gotsig;
944	} ANSIG;	1054	} ANSIG;
…		…
946	static ANSIG *signals;	1056	static ANSIG *signals;
947	static int signalmax;	1057	static int signalmax;
948		1058
949	static EV_ATOMIC_T gotsig;	1059	static EV_ATOMIC_T gotsig;
950		1060
951	void inline_size
952	signals_init (ANSIG *base, int count)
953	{
954	while (count--)
955	{
956	base->head = 0;
957	base->gotsig = 0;
958
959	++base;
960	}
961	}
962
963	/*****************************************************************************/	1061	/*****************************************************************************/
964		1062
965	void inline_speed	1063	/* used to prepare libev internal fd's */
		1064	/* this is not fork-safe */
		1065	inline_speed void
966	fd_intern (int fd)	1066	fd_intern (int fd)
967	{	1067	{
968	#ifdef _WIN32	1068	#ifdef _WIN32
969	int arg = 1;	1069	unsigned long arg = 1;
970	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1070	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
971	#else	1071	#else
972	fcntl (fd, F_SETFD, FD_CLOEXEC);	1072	fcntl (fd, F_SETFD, FD_CLOEXEC);
973	fcntl (fd, F_SETFL, O_NONBLOCK);	1073	fcntl (fd, F_SETFL, O_NONBLOCK);
974	#endif	1074	#endif
975	}	1075	}
976		1076
977	static void noinline	1077	static void noinline
978	evpipe_init (EV_P)	1078	evpipe_init (EV_P)
979	{	1079	{
980	if (!ev_is_active (&pipeev))	1080	if (!ev_is_active (&pipe_w))
981	{	1081	{
982	#if EV_USE_EVENTFD	1082	#if EV_USE_EVENTFD
983	if ((evfd = eventfd (0, 0)) >= 0)	1083	if ((evfd = eventfd (0, 0)) >= 0)
984	{	1084	{
985	evpipe [0] = -1;	1085	evpipe [0] = -1;
986	fd_intern (evfd);	1086	fd_intern (evfd);
987	ev_io_set (&pipeev, evfd, EV_READ);	1087	ev_io_set (&pipe_w, evfd, EV_READ);
988	}	1088	}
989	else	1089	else
990	#endif	1090	#endif
991	{	1091	{
992	while (pipe (evpipe))	1092	while (pipe (evpipe))
993	syserr ("(libev) error creating signal/async pipe");	1093	ev_syserr ("(libev) error creating signal/async pipe");
994		1094
995	fd_intern (evpipe [0]);	1095	fd_intern (evpipe [0]);
996	fd_intern (evpipe [1]);	1096	fd_intern (evpipe [1]);
997	ev_io_set (&pipeev, evpipe [0], EV_READ);	1097	ev_io_set (&pipe_w, evpipe [0], EV_READ);
998	}	1098	}
999		1099
1000	ev_io_start (EV_A_ &pipeev);	1100	ev_io_start (EV_A_ &pipe_w);
1001	ev_unref (EV_A); /* watcher should not keep loop alive */	1101	ev_unref (EV_A); /* watcher should not keep loop alive */
1002	}	1102	}
1003	}	1103	}
1004		1104
1005	void inline_size	1105	inline_size void
1006	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1106	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1007	{	1107	{
1008	if (!*flag)	1108	if (!*flag)
1009	{	1109	{
1010	int old_errno = errno; /* save errno because write might clobber it */	1110	int old_errno = errno; /* save errno because write might clobber it */
…		…
1023		1123
1024	errno = old_errno;	1124	errno = old_errno;
1025	}	1125	}
1026	}	1126	}
1027		1127
		1128	/* called whenever the libev signal pipe */
		1129	/* got some events (signal, async) */
1028	static void	1130	static void
1029	pipecb (EV_P_ ev_io *iow, int revents)	1131	pipecb (EV_P_ ev_io *iow, int revents)
1030	{	1132	{
1031	#if EV_USE_EVENTFD	1133	#if EV_USE_EVENTFD
1032	if (evfd >= 0)	1134	if (evfd >= 0)
…		…
1088	ev_feed_signal_event (EV_P_ int signum)	1190	ev_feed_signal_event (EV_P_ int signum)
1089	{	1191	{
1090	WL w;	1192	WL w;
1091		1193
1092	#if EV_MULTIPLICITY	1194	#if EV_MULTIPLICITY
1093	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));
1094	#endif	1196	#endif
1095		1197
1096	--signum;	1198	--signum;
1097		1199
1098	if (signum < 0 || signum >= signalmax)	1200	if (signum < 0 || signum >= signalmax)
…		…
1114		1216
1115	#ifndef WIFCONTINUED	1217	#ifndef WIFCONTINUED
1116	# define WIFCONTINUED(status) 0	1218	# define WIFCONTINUED(status) 0
1117	#endif	1219	#endif
1118		1220
1119	void inline_speed	1221	/* handle a single child status event */
		1222	inline_speed void
1120	child_reap (EV_P_ int chain, int pid, int status)	1223	child_reap (EV_P_ int chain, int pid, int status)
1121	{	1224	{
1122	ev_child *w;	1225	ev_child *w;
1123	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1226	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1124		1227
…		…
1137		1240
1138	#ifndef WCONTINUED	1241	#ifndef WCONTINUED
1139	# define WCONTINUED 0	1242	# define WCONTINUED 0
1140	#endif	1243	#endif
1141		1244
		1245	/* called on sigchld etc., calls waitpid */
1142	static void	1246	static void
1143	childcb (EV_P_ ev_signal *sw, int revents)	1247	childcb (EV_P_ ev_signal *sw, int revents)
1144	{	1248	{
1145	int pid, status;	1249	int pid, status;
1146		1250
…		…
1227	/* kqueue is borked on everything but netbsd apparently */	1331	/* kqueue is borked on everything but netbsd apparently */
1228	/* 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 */
1229	flags &= ~EVBACKEND_KQUEUE;	1333	flags &= ~EVBACKEND_KQUEUE;
1230	#endif	1334	#endif
1231	#ifdef __APPLE__	1335	#ifdef __APPLE__
1232	// flags &= ~EVBACKEND_KQUEUE; for documentation	1336	/* only select works correctly on that "unix-certified" platform */
1233	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 */
1234	#endif	1339	#endif
1235		1340
1236	return flags;	1341	return flags;
1237	}	1342	}
1238		1343
…		…
1258	ev_loop_count (EV_P)	1363	ev_loop_count (EV_P)
1259	{	1364	{
1260	return loop_count;	1365	return loop_count;
1261	}	1366	}
1262		1367
		1368	unsigned int
		1369	ev_loop_depth (EV_P)
		1370	{
		1371	return loop_depth;
		1372	}
		1373
1263	void	1374	void
1264	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1375	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1265	{	1376	{
1266	io_blocktime = interval;	1377	io_blocktime = interval;
1267	}	1378	}
…		…
1270	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1381	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1271	{	1382	{
1272	timeout_blocktime = interval;	1383	timeout_blocktime = interval;
1273	}	1384	}
1274		1385
		1386	/* initialise a loop structure, must be zero-initialised */
1275	static void noinline	1387	static void noinline
1276	loop_init (EV_P_ unsigned int flags)	1388	loop_init (EV_P_ unsigned int flags)
1277	{	1389	{
1278	if (!backend)	1390	if (!backend)
1279	{	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
1280	#if EV_USE_MONOTONIC	1402	#if EV_USE_MONOTONIC
		1403	if (!have_monotonic)
1281	{	1404	{
1282	struct timespec ts;	1405	struct timespec ts;
		1406
1283	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1407	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1284	have_monotonic = 1;	1408	have_monotonic = 1;
1285	}	1409	}
1286	#endif	1410	#endif
1287		1411
1288	ev_rt_now = ev_time ();	1412	ev_rt_now = ev_time ();
1289	mn_now = get_clock ();	1413	mn_now = get_clock ();
1290	now_floor = mn_now;	1414	now_floor = mn_now;
…		…
1327	#endif	1451	#endif
1328	#if EV_USE_SELECT	1452	#if EV_USE_SELECT
1329	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1453	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1330	#endif	1454	#endif
1331		1455
		1456	ev_prepare_init (&pending_w, pendingcb);
		1457
1332	ev_init (&pipeev, pipecb);	1458	ev_init (&pipe_w, pipecb);
1333	ev_set_priority (&pipeev, EV_MAXPRI);	1459	ev_set_priority (&pipe_w, EV_MAXPRI);
1334	}	1460	}
1335	}	1461	}
1336		1462
		1463	/* free up a loop structure */
1337	static void noinline	1464	static void noinline
1338	loop_destroy (EV_P)	1465	loop_destroy (EV_P)
1339	{	1466	{
1340	int i;	1467	int i;
1341		1468
1342	if (ev_is_active (&pipeev))	1469	if (ev_is_active (&pipe_w))
1343	{	1470	{
1344	ev_ref (EV_A); /* signal watcher */	1471	ev_ref (EV_A); /* signal watcher */
1345	ev_io_stop (EV_A_ &pipeev);	1472	ev_io_stop (EV_A_ &pipe_w);
1346		1473
1347	#if EV_USE_EVENTFD	1474	#if EV_USE_EVENTFD
1348	if (evfd >= 0)	1475	if (evfd >= 0)
1349	close (evfd);	1476	close (evfd);
1350	#endif	1477	#endif
…		…
1389	}	1516	}
1390		1517
1391	ev_free (anfds); anfdmax = 0;	1518	ev_free (anfds); anfdmax = 0;
1392		1519
1393	/* 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);
1394	array_free (fdchange, EMPTY);	1522	array_free (fdchange, EMPTY);
1395	array_free (timer, EMPTY);	1523	array_free (timer, EMPTY);
1396	#if EV_PERIODIC_ENABLE	1524	#if EV_PERIODIC_ENABLE
1397	array_free (periodic, EMPTY);	1525	array_free (periodic, EMPTY);
1398	#endif	1526	#endif
…		…
1407		1535
1408	backend = 0;	1536	backend = 0;
1409	}	1537	}
1410		1538
1411	#if EV_USE_INOTIFY	1539	#if EV_USE_INOTIFY
1412	void inline_size infy_fork (EV_P);	1540	inline_size void infy_fork (EV_P);
1413	#endif	1541	#endif
1414		1542
1415	void inline_size	1543	inline_size void
1416	loop_fork (EV_P)	1544	loop_fork (EV_P)
1417	{	1545	{
1418	#if EV_USE_PORT	1546	#if EV_USE_PORT
1419	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1547	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1420	#endif	1548	#endif
…		…
1426	#endif	1554	#endif
1427	#if EV_USE_INOTIFY	1555	#if EV_USE_INOTIFY
1428	infy_fork (EV_A);	1556	infy_fork (EV_A);
1429	#endif	1557	#endif
1430		1558
1431	if (ev_is_active (&pipeev))	1559	if (ev_is_active (&pipe_w))
1432	{	1560	{
1433	/* this "locks" the handlers against writing to the pipe */	1561	/* this "locks" the handlers against writing to the pipe */
1434	/* while we modify the fd vars */	1562	/* while we modify the fd vars */
1435	gotsig = 1;	1563	gotsig = 1;
1436	#if EV_ASYNC_ENABLE	1564	#if EV_ASYNC_ENABLE
1437	gotasync = 1;	1565	gotasync = 1;
1438	#endif	1566	#endif
1439		1567
1440	ev_ref (EV_A);	1568	ev_ref (EV_A);
1441	ev_io_stop (EV_A_ &pipeev);	1569	ev_io_stop (EV_A_ &pipe_w);
1442		1570
1443	#if EV_USE_EVENTFD	1571	#if EV_USE_EVENTFD
1444	if (evfd >= 0)	1572	if (evfd >= 0)
1445	close (evfd);	1573	close (evfd);
1446	#endif	1574	#endif
…		…
1451	close (evpipe [1]);	1579	close (evpipe [1]);
1452	}	1580	}
1453		1581
1454	evpipe_init (EV_A);	1582	evpipe_init (EV_A);
1455	/* now iterate over everything, in case we missed something */	1583	/* now iterate over everything, in case we missed something */
1456	pipecb (EV_A_ &pipeev, EV_READ);	1584	pipecb (EV_A_ &pipe_w, EV_READ);
1457	}	1585	}
1458		1586
1459	postfork = 0;	1587	postfork = 0;
1460	}	1588	}
1461		1589
1462	#if EV_MULTIPLICITY	1590	#if EV_MULTIPLICITY
		1591
1463	struct ev_loop *	1592	struct ev_loop *
1464	ev_loop_new (unsigned int flags)	1593	ev_loop_new (unsigned int flags)
1465	{	1594	{
1466	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));
1467		1596
…		…
1485	void	1614	void
1486	ev_loop_fork (EV_P)	1615	ev_loop_fork (EV_P)
1487	{	1616	{
1488	postfork = 1; /* must be in line with ev_default_fork */	1617	postfork = 1; /* must be in line with ev_default_fork */
1489	}	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)
1490	#endif	1715	# endif
		1716	#endif
		1717	}
		1718
		1719	#endif /* multiplicity */
1491		1720
1492	#if EV_MULTIPLICITY	1721	#if EV_MULTIPLICITY
1493	struct ev_loop *	1722	struct ev_loop *
1494	ev_default_loop_init (unsigned int flags)	1723	ev_default_loop_init (unsigned int flags)
1495	#else	1724	#else
…		…
1528	{	1757	{
1529	#if EV_MULTIPLICITY	1758	#if EV_MULTIPLICITY
1530	struct ev_loop *loop = ev_default_loop_ptr;	1759	struct ev_loop *loop = ev_default_loop_ptr;
1531	#endif	1760	#endif
1532		1761
		1762	ev_default_loop_ptr = 0;
		1763
1533	#ifndef _WIN32	1764	#ifndef _WIN32
1534	ev_ref (EV_A); /* child watcher */	1765	ev_ref (EV_A); /* child watcher */
1535	ev_signal_stop (EV_A_ &childev);	1766	ev_signal_stop (EV_A_ &childev);
1536	#endif	1767	#endif
1537		1768
…		…
1543	{	1774	{
1544	#if EV_MULTIPLICITY	1775	#if EV_MULTIPLICITY
1545	struct ev_loop *loop = ev_default_loop_ptr;	1776	struct ev_loop *loop = ev_default_loop_ptr;
1546	#endif	1777	#endif
1547		1778
1548	if (backend)
1549	postfork = 1; /* must be in line with ev_loop_fork */	1779	postfork = 1; /* must be in line with ev_loop_fork */
1550	}	1780	}
1551		1781
1552	/*****************************************************************************/	1782	/*****************************************************************************/
1553		1783
1554	void	1784	void
1555	ev_invoke (EV_P_ void *w, int revents)	1785	ev_invoke (EV_P_ void *w, int revents)
1556	{	1786	{
1557	EV_CB_INVOKE ((W)w, revents);	1787	EV_CB_INVOKE ((W)w, revents);
1558	}	1788	}
1559		1789
1560	void inline_speed	1790	inline_speed void
1561	call_pending (EV_P)	1791	call_pending (EV_P)
1562	{	1792	{
1563	int pri;	1793	int pri;
1564		1794
1565	for (pri = NUMPRI; pri--; )	1795	for (pri = NUMPRI; pri--; )
1566	while (pendingcnt [pri])	1796	while (pendingcnt [pri])
1567	{	1797	{
1568	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1798	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1569		1799
1570	if (expect_true (p->w))
1571	{
1572	/*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 */
1573		1802
1574	p->w->pending = 0;	1803	p->w->pending = 0;
1575	EV_CB_INVOKE (p->w, p->events);	1804	EV_CB_INVOKE (p->w, p->events);
1576	}	1805	EV_FREQUENT_CHECK;
1577	}	1806	}
1578	}	1807	}
1579		1808
1580	#if EV_IDLE_ENABLE	1809	#if EV_IDLE_ENABLE
1581	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
1582	idle_reify (EV_P)	1813	idle_reify (EV_P)
1583	{	1814	{
1584	if (expect_false (idleall))	1815	if (expect_false (idleall))
1585	{	1816	{
1586	int pri;	1817	int pri;
…		…
1598	}	1829	}
1599	}	1830	}
1600	}	1831	}
1601	#endif	1832	#endif
1602		1833
1603	void inline_size	1834	/* make timers pending */
		1835	inline_size void
1604	timers_reify (EV_P)	1836	timers_reify (EV_P)
1605	{	1837	{
		1838	EV_FREQUENT_CHECK;
		1839
1606	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	1840	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1607	{	1841	{
1608	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	1842	do
1609
1610	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1611
1612	/* first reschedule or stop timer */
1613	if (w->repeat)
1614	{	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	{
1615	ev_at (w) += w->repeat;	1851	ev_at (w) += w->repeat;
1616	if (ev_at (w) < mn_now)	1852	if (ev_at (w) < mn_now)
1617	ev_at (w) = mn_now;	1853	ev_at (w) = mn_now;
1618		1854
1619	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.));
1620		1856
1621	ANHE_at_set (timers [HEAP0]);	1857	ANHE_at_cache (timers [HEAP0]);
1622	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);
1623	}	1865	}
1624	else	1866	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1625	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1626		1867
1627	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1868	feed_reverse_done (EV_A_ EV_TIMEOUT);
1628	}	1869	}
1629	}	1870	}
1630		1871
1631	#if EV_PERIODIC_ENABLE	1872	#if EV_PERIODIC_ENABLE
1632	void inline_size	1873	/* make periodics pending */
		1874	inline_size void
1633	periodics_reify (EV_P)	1875	periodics_reify (EV_P)
1634	{	1876	{
		1877	EV_FREQUENT_CHECK;
		1878
1635	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	1879	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1636	{	1880	{
1637	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	1881	int feed_count = 0;
1638		1882
1639	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	1883	do
1640
1641	/* first reschedule or stop timer */
1642	if (w->reschedule_cb)
1643	{	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	{
1644	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1892	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1645		1893
1646	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));
1647		1895
1648	ANHE_at_set (periodics [HEAP0]);	1896	ANHE_at_cache (periodics [HEAP0]);
1649	downheap (periodics, periodiccnt, HEAP0);	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);
1650	}	1923	}
1651	else if (w->interval)	1924	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1652	{
1653	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1654	if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1655		1925
1656	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) >= ev_rt_now));
1657
1658	ANHE_at_set (periodics [HEAP0]);
1659	downheap (periodics, periodiccnt, HEAP0);
1660	}
1661	else
1662	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1663
1664	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1926	feed_reverse_done (EV_A_ EV_PERIODIC);
1665	}	1927	}
1666	}	1928	}
1667		1929
		1930	/* simply recalculate all periodics */
		1931	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1668	static void noinline	1932	static void noinline
1669	periodics_reschedule (EV_P)	1933	periodics_reschedule (EV_P)
1670	{	1934	{
1671	int i;	1935	int i;
1672		1936
…		…
1678	if (w->reschedule_cb)	1942	if (w->reschedule_cb)
1679	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1943	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1680	else if (w->interval)	1944	else if (w->interval)
1681	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;
1682		1946
1683	ANHE_at_set (periodics [i]);	1947	ANHE_at_cache (periodics [i]);
1684	}	1948	}
1685		1949
1686	/* we don't use floyds algorithm, uphead is simpler and is more cache-efficient */	1950	reheap (periodics, periodiccnt);
1687	/* also, this is easy and corretc for both 2-heaps and 4-heaps */	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
1688	for (i = 0; i < periodiccnt; ++i)	1960	for (i = 0; i < timercnt; ++i)
1689	upheap (periodics, i + HEAP0);	1961	{
		1962	ANHE *he = timers + i + HEAP0;
		1963	ANHE_w (*he)->at += adjust;
		1964	ANHE_at_cache (*he);
		1965	}
1690	}	1966	}
1691	#endif
1692		1967
1693	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
1694	time_update (EV_P_ ev_tstamp max_block)	1971	time_update (EV_P_ ev_tstamp max_block)
1695	{	1972	{
1696	int i;
1697
1698	#if EV_USE_MONOTONIC	1973	#if EV_USE_MONOTONIC
1699	if (expect_true (have_monotonic))	1974	if (expect_true (have_monotonic))
1700	{	1975	{
		1976	int i;
1701	ev_tstamp odiff = rtmn_diff;	1977	ev_tstamp odiff = rtmn_diff;
1702		1978
1703	mn_now = get_clock ();	1979	mn_now = get_clock ();
1704		1980
1705	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	1981	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1731	ev_rt_now = ev_time ();	2007	ev_rt_now = ev_time ();
1732	mn_now = get_clock ();	2008	mn_now = get_clock ();
1733	now_floor = mn_now;	2009	now_floor = mn_now;
1734	}	2010	}
1735		2011
		2012	/* no timer adjustment, as the monotonic clock doesn't jump */
		2013	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1736	# if EV_PERIODIC_ENABLE	2014	# if EV_PERIODIC_ENABLE
1737	periodics_reschedule (EV_A);	2015	periodics_reschedule (EV_A);
1738	# endif	2016	# endif
1739	/* no timer adjustment, as the monotonic clock doesn't jump */
1740	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1741	}	2017	}
1742	else	2018	else
1743	#endif	2019	#endif
1744	{	2020	{
1745	ev_rt_now = ev_time ();	2021	ev_rt_now = ev_time ();
1746		2022
1747	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))
1748	{	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);
1749	#if EV_PERIODIC_ENABLE	2027	#if EV_PERIODIC_ENABLE
1750	periodics_reschedule (EV_A);	2028	periodics_reschedule (EV_A);
1751	#endif	2029	#endif
1752	/* adjust timers. this is easy, as the offset is the same for all of them */
1753	for (i = 0; i < timercnt; ++i)
1754	{
1755	ANHE *he = timers + i + HEAP0;
1756	ANHE_w (*he)->at += ev_rt_now - mn_now;
1757	ANHE_at_set (*he);
1758	}
1759	}	2030	}
1760		2031
1761	mn_now = ev_rt_now;	2032	mn_now = ev_rt_now;
1762	}	2033	}
1763	}	2034	}
1764		2035
1765	void	2036	void
1766	ev_ref (EV_P)
1767	{
1768	++activecnt;
1769	}
1770
1771	void
1772	ev_unref (EV_P)
1773	{
1774	--activecnt;
1775	}
1776
1777	static int loop_done;
1778
1779	void
1780	ev_loop (EV_P_ int flags)	2037	ev_loop (EV_P_ int flags)
1781	{	2038	{
		2039	++loop_depth;
		2040
1782	loop_done = EVUNLOOP_CANCEL;	2041	loop_done = EVUNLOOP_CANCEL;
1783		2042
1784	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 */
1785		2044
1786	do	2045	do
1787	{	2046	{
		2047	#if EV_VERIFY >= 2
		2048	ev_loop_verify (EV_A);
		2049	#endif
		2050
1788	#ifndef _WIN32	2051	#ifndef _WIN32
1789	if (expect_false (curpid)) /* penalise the forking check even more */	2052	if (expect_false (curpid)) /* penalise the forking check even more */
1790	if (expect_false (getpid () != curpid))	2053	if (expect_false (getpid () != curpid))
1791	{	2054	{
1792	curpid = getpid ();	2055	curpid = getpid ();
…		…
1809	{	2072	{
1810	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2073	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1811	call_pending (EV_A);	2074	call_pending (EV_A);
1812	}	2075	}
1813		2076
1814	if (expect_false (!activecnt))
1815	break;
1816
1817	/* we might have forked, so reify kernel state if necessary */	2077	/* we might have forked, so reify kernel state if necessary */
1818	if (expect_false (postfork))	2078	if (expect_false (postfork))
1819	loop_fork (EV_A);	2079	loop_fork (EV_A);
1820		2080
1821	/* update fd-related kernel structures */	2081	/* update fd-related kernel structures */
…		…
1826	ev_tstamp waittime = 0.;	2086	ev_tstamp waittime = 0.;
1827	ev_tstamp sleeptime = 0.;	2087	ev_tstamp sleeptime = 0.;
1828		2088
1829	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2089	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1830	{	2090	{
		2091	/* remember old timestamp for io_blocktime calculation */
		2092	ev_tstamp prev_mn_now = mn_now;
		2093
1831	/* update time to cancel out callback processing overhead */	2094	/* update time to cancel out callback processing overhead */
1832	time_update (EV_A_ 1e100);	2095	time_update (EV_A_ 1e100);
1833		2096
1834	waittime = MAX_BLOCKTIME;	2097	waittime = MAX_BLOCKTIME;
1835		2098
…		…
1845	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2108	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1846	if (waittime > to) waittime = to;	2109	if (waittime > to) waittime = to;
1847	}	2110	}
1848	#endif	2111	#endif
1849		2112
		2113	/* don't let timeouts decrease the waittime below timeout_blocktime */
1850	if (expect_false (waittime < timeout_blocktime))	2114	if (expect_false (waittime < timeout_blocktime))
1851	waittime = timeout_blocktime;	2115	waittime = timeout_blocktime;
1852		2116
1853	sleeptime = waittime - backend_fudge;	2117	/* extra check because io_blocktime is commonly 0 */
1854
1855	if (expect_true (sleeptime > io_blocktime))	2118	if (expect_false (io_blocktime))
1856	sleeptime = io_blocktime;
1857
1858	if (sleeptime)
1859	{	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	{
1860	ev_sleep (sleeptime);	2127	ev_sleep (sleeptime);
1861	waittime -= sleeptime;	2128	waittime -= sleeptime;
		2129	}
1862	}	2130	}
1863	}	2131	}
1864		2132
1865	++loop_count;	2133	++loop_count;
1866	backend_poll (EV_A_ waittime);	2134	backend_poll (EV_A_ waittime);
…		…
1892	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2160	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1893	));	2161	));
1894		2162
1895	if (loop_done == EVUNLOOP_ONE)	2163	if (loop_done == EVUNLOOP_ONE)
1896	loop_done = EVUNLOOP_CANCEL;	2164	loop_done = EVUNLOOP_CANCEL;
		2165
		2166	--loop_depth;
1897	}	2167	}
1898		2168
1899	void	2169	void
1900	ev_unloop (EV_P_ int how)	2170	ev_unloop (EV_P_ int how)
1901	{	2171	{
1902	loop_done = how;	2172	loop_done = how;
1903	}	2173	}
1904		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
1905	/*****************************************************************************/	2212	/*****************************************************************************/
		2213	/* singly-linked list management, used when the expected list length is short */
1906		2214
1907	void inline_size	2215	inline_size void
1908	wlist_add (WL *head, WL elem)	2216	wlist_add (WL *head, WL elem)
1909	{	2217	{
1910	elem->next = *head;	2218	elem->next = *head;
1911	*head = elem;	2219	*head = elem;
1912	}	2220	}
1913		2221
1914	void inline_size	2222	inline_size void
1915	wlist_del (WL *head, WL elem)	2223	wlist_del (WL *head, WL elem)
1916	{	2224	{
1917	while (*head)	2225	while (*head)
1918	{	2226	{
1919	if (*head == elem)	2227	if (*head == elem)
…		…
1924		2232
1925	head = &(*head)->next;	2233	head = &(*head)->next;
1926	}	2234	}
1927	}	2235	}
1928		2236
1929	void inline_speed	2237	/* internal, faster, version of ev_clear_pending */
		2238	inline_speed void
1930	clear_pending (EV_P_ W w)	2239	clear_pending (EV_P_ W w)
1931	{	2240	{
1932	if (w->pending)	2241	if (w->pending)
1933	{	2242	{
1934	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2243	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1935	w->pending = 0;	2244	w->pending = 0;
1936	}	2245	}
1937	}	2246	}
1938		2247
1939	int	2248	int
…		…
1943	int pending = w_->pending;	2252	int pending = w_->pending;
1944		2253
1945	if (expect_true (pending))	2254	if (expect_true (pending))
1946	{	2255	{
1947	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2256	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2257	p->w = (W)&pending_w;
1948	w_->pending = 0;	2258	w_->pending = 0;
1949	p->w = 0;
1950	return p->events;	2259	return p->events;
1951	}	2260	}
1952	else	2261	else
1953	return 0;	2262	return 0;
1954	}	2263	}
1955		2264
1956	void inline_size	2265	inline_size void
1957	pri_adjust (EV_P_ W w)	2266	pri_adjust (EV_P_ W w)
1958	{	2267	{
1959	int pri = w->priority;	2268	int pri = ev_priority (w);
1960	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2269	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1961	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2270	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1962	w->priority = pri;	2271	ev_set_priority (w, pri);
1963	}	2272	}
1964		2273
1965	void inline_speed	2274	inline_speed void
1966	ev_start (EV_P_ W w, int active)	2275	ev_start (EV_P_ W w, int active)
1967	{	2276	{
1968	pri_adjust (EV_A_ w);	2277	pri_adjust (EV_A_ w);
1969	w->active = active;	2278	w->active = active;
1970	ev_ref (EV_A);	2279	ev_ref (EV_A);
1971	}	2280	}
1972		2281
1973	void inline_size	2282	inline_size void
1974	ev_stop (EV_P_ W w)	2283	ev_stop (EV_P_ W w)
1975	{	2284	{
1976	ev_unref (EV_A);	2285	ev_unref (EV_A);
1977	w->active = 0;	2286	w->active = 0;
1978	}	2287	}
…		…
1985	int fd = w->fd;	2294	int fd = w->fd;
1986		2295
1987	if (expect_false (ev_is_active (w)))	2296	if (expect_false (ev_is_active (w)))
1988	return;	2297	return;
1989		2298
1990	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;
1991		2303
1992	ev_start (EV_A_ (W)w, 1);	2304	ev_start (EV_A_ (W)w, 1);
1993	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2305	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1994	wlist_add (&anfds[fd].head, (WL)w);	2306	wlist_add (&anfds[fd].head, (WL)w);
1995		2307
1996	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2308	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
1997	w->events &= ~EV_IOFDSET;	2309	w->events &= ~EV__IOFDSET;
		2310
		2311	EV_FREQUENT_CHECK;
1998	}	2312	}
1999		2313
2000	void noinline	2314	void noinline
2001	ev_io_stop (EV_P_ ev_io *w)	2315	ev_io_stop (EV_P_ ev_io *w)
2002	{	2316	{
2003	clear_pending (EV_A_ (W)w);	2317	clear_pending (EV_A_ (W)w);
2004	if (expect_false (!ev_is_active (w)))	2318	if (expect_false (!ev_is_active (w)))
2005	return;	2319	return;
2006		2320
2007	assert (("ev_io_stop 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;
2008		2324
2009	wlist_del (&anfds[w->fd].head, (WL)w);	2325	wlist_del (&anfds[w->fd].head, (WL)w);
2010	ev_stop (EV_A_ (W)w);	2326	ev_stop (EV_A_ (W)w);
2011		2327
2012	fd_change (EV_A_ w->fd, 1);	2328	fd_change (EV_A_ w->fd, 1);
		2329
		2330	EV_FREQUENT_CHECK;
2013	}	2331	}
2014		2332
2015	void noinline	2333	void noinline
2016	ev_timer_start (EV_P_ ev_timer *w)	2334	ev_timer_start (EV_P_ ev_timer *w)
2017	{	2335	{
2018	if (expect_false (ev_is_active (w)))	2336	if (expect_false (ev_is_active (w)))
2019	return;	2337	return;
2020		2338
2021	ev_at (w) += mn_now;	2339	ev_at (w) += mn_now;
2022		2340
2023	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.));
2024		2342
		2343	EV_FREQUENT_CHECK;
		2344
		2345	++timercnt;
2025	ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1);	2346	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2026	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);	2347	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
2027	ANHE_w (timers [ev_active (w)]) = (WT)w;	2348	ANHE_w (timers [ev_active (w)]) = (WT)w;
2028	ANHE_at_set (timers [ev_active (w)]);	2349	ANHE_at_cache (timers [ev_active (w)]);
2029	upheap (timers, ev_active (w));	2350	upheap (timers, ev_active (w));
2030		2351
		2352	EV_FREQUENT_CHECK;
		2353
2031	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2354	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2032	}	2355	}
2033		2356
2034	void noinline	2357	void noinline
2035	ev_timer_stop (EV_P_ ev_timer *w)	2358	ev_timer_stop (EV_P_ ev_timer *w)
2036	{	2359	{
2037	clear_pending (EV_A_ (W)w);	2360	clear_pending (EV_A_ (W)w);
2038	if (expect_false (!ev_is_active (w)))	2361	if (expect_false (!ev_is_active (w)))
2039	return;	2362	return;
2040		2363
		2364	EV_FREQUENT_CHECK;
		2365
2041	{	2366	{
2042	int active = ev_active (w);	2367	int active = ev_active (w);
2043		2368
2044	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2369	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2045		2370
		2371	--timercnt;
		2372
2046	if (expect_true (active < timercnt + HEAP0 - 1))	2373	if (expect_true (active < timercnt + HEAP0))
2047	{	2374	{
2048	timers [active] = timers [timercnt + HEAP0 - 1];	2375	timers [active] = timers [timercnt + HEAP0];
2049	adjustheap (timers, timercnt, active);	2376	adjustheap (timers, timercnt, active);
2050	}	2377	}
2051
2052	--timercnt;
2053	}	2378	}
		2379
		2380	EV_FREQUENT_CHECK;
2054		2381
2055	ev_at (w) -= mn_now;	2382	ev_at (w) -= mn_now;
2056		2383
2057	ev_stop (EV_A_ (W)w);	2384	ev_stop (EV_A_ (W)w);
2058	}	2385	}
2059		2386
2060	void noinline	2387	void noinline
2061	ev_timer_again (EV_P_ ev_timer *w)	2388	ev_timer_again (EV_P_ ev_timer *w)
2062	{	2389	{
		2390	EV_FREQUENT_CHECK;
		2391
2063	if (ev_is_active (w))	2392	if (ev_is_active (w))
2064	{	2393	{
2065	if (w->repeat)	2394	if (w->repeat)
2066	{	2395	{
2067	ev_at (w) = mn_now + w->repeat;	2396	ev_at (w) = mn_now + w->repeat;
2068	ANHE_at_set (timers [ev_active (w)]);	2397	ANHE_at_cache (timers [ev_active (w)]);
2069	adjustheap (timers, timercnt, ev_active (w));	2398	adjustheap (timers, timercnt, ev_active (w));
2070	}	2399	}
2071	else	2400	else
2072	ev_timer_stop (EV_A_ w);	2401	ev_timer_stop (EV_A_ w);
2073	}	2402	}
2074	else if (w->repeat)	2403	else if (w->repeat)
2075	{	2404	{
2076	ev_at (w) = w->repeat;	2405	ev_at (w) = w->repeat;
2077	ev_timer_start (EV_A_ w);	2406	ev_timer_start (EV_A_ w);
2078	}	2407	}
		2408
		2409	EV_FREQUENT_CHECK;
2079	}	2410	}
2080		2411
2081	#if EV_PERIODIC_ENABLE	2412	#if EV_PERIODIC_ENABLE
2082	void noinline	2413	void noinline
2083	ev_periodic_start (EV_P_ ev_periodic *w)	2414	ev_periodic_start (EV_P_ ev_periodic *w)
…		…
2087		2418
2088	if (w->reschedule_cb)	2419	if (w->reschedule_cb)
2089	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2420	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2090	else if (w->interval)	2421	else if (w->interval)
2091	{	2422	{
2092	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.));
2093	/* 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 */
2094	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;
2095	}	2426	}
2096	else	2427	else
2097	ev_at (w) = w->offset;	2428	ev_at (w) = w->offset;
2098		2429
		2430	EV_FREQUENT_CHECK;
		2431
		2432	++periodiccnt;
2099	ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1);	2433	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2100	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);	2434	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2101	ANHE_w (periodics [ev_active (w)]) = (WT)w;	2435	ANHE_w (periodics [ev_active (w)]) = (WT)w;
2102	ANHE_at_set (periodics [ev_active (w)]);	2436	ANHE_at_cache (periodics [ev_active (w)]);
2103	upheap (periodics, ev_active (w));	2437	upheap (periodics, ev_active (w));
2104		2438
		2439	EV_FREQUENT_CHECK;
		2440
2105	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2441	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2106	}	2442	}
2107		2443
2108	void noinline	2444	void noinline
2109	ev_periodic_stop (EV_P_ ev_periodic *w)	2445	ev_periodic_stop (EV_P_ ev_periodic *w)
2110	{	2446	{
2111	clear_pending (EV_A_ (W)w);	2447	clear_pending (EV_A_ (W)w);
2112	if (expect_false (!ev_is_active (w)))	2448	if (expect_false (!ev_is_active (w)))
2113	return;	2449	return;
2114		2450
		2451	EV_FREQUENT_CHECK;
		2452
2115	{	2453	{
2116	int active = ev_active (w);	2454	int active = ev_active (w);
2117		2455
2118	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2456	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2119		2457
		2458	--periodiccnt;
		2459
2120	if (expect_true (active < periodiccnt + HEAP0 - 1))	2460	if (expect_true (active < periodiccnt + HEAP0))
2121	{	2461	{
2122	periodics [active] = periodics [periodiccnt + HEAP0 - 1];	2462	periodics [active] = periodics [periodiccnt + HEAP0];
2123	adjustheap (periodics, periodiccnt, active);	2463	adjustheap (periodics, periodiccnt, active);
2124	}	2464	}
2125
2126	--periodiccnt;
2127	}	2465	}
		2466
		2467	EV_FREQUENT_CHECK;
2128		2468
2129	ev_stop (EV_A_ (W)w);	2469	ev_stop (EV_A_ (W)w);
2130	}	2470	}
2131		2471
2132	void noinline	2472	void noinline
…		…
2144		2484
2145	void noinline	2485	void noinline
2146	ev_signal_start (EV_P_ ev_signal *w)	2486	ev_signal_start (EV_P_ ev_signal *w)
2147	{	2487	{
2148	#if EV_MULTIPLICITY	2488	#if EV_MULTIPLICITY
2149	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));
2150	#endif	2490	#endif
2151	if (expect_false (ev_is_active (w)))	2491	if (expect_false (ev_is_active (w)))
2152	return;	2492	return;
2153		2493
2154	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));
2155		2495
2156	evpipe_init (EV_A);	2496	evpipe_init (EV_A);
		2497
		2498	EV_FREQUENT_CHECK;
2157		2499
2158	{	2500	{
2159	#ifndef _WIN32	2501	#ifndef _WIN32
2160	sigset_t full, prev;	2502	sigset_t full, prev;
2161	sigfillset (&full);	2503	sigfillset (&full);
2162	sigprocmask (SIG_SETMASK, &full, &prev);	2504	sigprocmask (SIG_SETMASK, &full, &prev);
2163	#endif	2505	#endif
2164		2506
2165	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2507	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2166		2508
2167	#ifndef _WIN32	2509	#ifndef _WIN32
2168	sigprocmask (SIG_SETMASK, &prev, 0);	2510	sigprocmask (SIG_SETMASK, &prev, 0);
2169	#endif	2511	#endif
2170	}	2512	}
…		…
2182	sigfillset (&sa.sa_mask);	2524	sigfillset (&sa.sa_mask);
2183	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 */
2184	sigaction (w->signum, &sa, 0);	2526	sigaction (w->signum, &sa, 0);
2185	#endif	2527	#endif
2186	}	2528	}
		2529
		2530	EV_FREQUENT_CHECK;
2187	}	2531	}
2188		2532
2189	void noinline	2533	void noinline
2190	ev_signal_stop (EV_P_ ev_signal *w)	2534	ev_signal_stop (EV_P_ ev_signal *w)
2191	{	2535	{
2192	clear_pending (EV_A_ (W)w);	2536	clear_pending (EV_A_ (W)w);
2193	if (expect_false (!ev_is_active (w)))	2537	if (expect_false (!ev_is_active (w)))
2194	return;	2538	return;
2195		2539
		2540	EV_FREQUENT_CHECK;
		2541
2196	wlist_del (&signals [w->signum - 1].head, (WL)w);	2542	wlist_del (&signals [w->signum - 1].head, (WL)w);
2197	ev_stop (EV_A_ (W)w);	2543	ev_stop (EV_A_ (W)w);
2198		2544
2199	if (!signals [w->signum - 1].head)	2545	if (!signals [w->signum - 1].head)
2200	signal (w->signum, SIG_DFL);	2546	signal (w->signum, SIG_DFL);
		2547
		2548	EV_FREQUENT_CHECK;
2201	}	2549	}
2202		2550
2203	void	2551	void
2204	ev_child_start (EV_P_ ev_child *w)	2552	ev_child_start (EV_P_ ev_child *w)
2205	{	2553	{
2206	#if EV_MULTIPLICITY	2554	#if EV_MULTIPLICITY
2207	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));
2208	#endif	2556	#endif
2209	if (expect_false (ev_is_active (w)))	2557	if (expect_false (ev_is_active (w)))
2210	return;	2558	return;
2211		2559
		2560	EV_FREQUENT_CHECK;
		2561
2212	ev_start (EV_A_ (W)w, 1);	2562	ev_start (EV_A_ (W)w, 1);
2213	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;
2214	}	2566	}
2215		2567
2216	void	2568	void
2217	ev_child_stop (EV_P_ ev_child *w)	2569	ev_child_stop (EV_P_ ev_child *w)
2218	{	2570	{
2219	clear_pending (EV_A_ (W)w);	2571	clear_pending (EV_A_ (W)w);
2220	if (expect_false (!ev_is_active (w)))	2572	if (expect_false (!ev_is_active (w)))
2221	return;	2573	return;
2222		2574
		2575	EV_FREQUENT_CHECK;
		2576
2223	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2577	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2224	ev_stop (EV_A_ (W)w);	2578	ev_stop (EV_A_ (W)w);
		2579
		2580	EV_FREQUENT_CHECK;
2225	}	2581	}
2226		2582
2227	#if EV_STAT_ENABLE	2583	#if EV_STAT_ENABLE
2228		2584
2229	# ifdef _WIN32	2585	# ifdef _WIN32
2230	# undef lstat	2586	# undef lstat
2231	# define lstat(a,b) _stati64 (a,b)	2587	# define lstat(a,b) _stati64 (a,b)
2232	# endif	2588	# endif
2233		2589
2234	#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 */
2235	#define MIN_STAT_INTERVAL 0.1074891	2592	#define MIN_STAT_INTERVAL 0.1074891
2236		2593
2237	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);
2238		2595
2239	#if EV_USE_INOTIFY	2596	#if EV_USE_INOTIFY
2240	# define EV_INOTIFY_BUFSIZE 8192	2597	# define EV_INOTIFY_BUFSIZE 8192
…		…
2244	{	2601	{
2245	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);
2246		2603
2247	if (w->wd < 0)	2604	if (w->wd < 0)
2248	{	2605	{
		2606	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2249	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 */
2250		2608
2251	/* monitor some parent directory for speedup hints */	2609	/* monitor some parent directory for speedup hints */
2252	/* note that exceeding the hardcoded limit is not a correctness issue, */	2610	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2253	/* but an efficiency issue only */	2611	/* but an efficiency issue only */
2254	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2612	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2255	{	2613	{
2256	char path [4096];	2614	char path [4096];
2257	strcpy (path, w->path);	2615	strcpy (path, w->path);
…		…
2261	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2619	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2262	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2620	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2263		2621
2264	char *pend = strrchr (path, '/');	2622	char *pend = strrchr (path, '/');
2265		2623
2266	if (!pend)	2624	if (!pend || pend == path)
2267	break; /* whoops, no '/', complain to your admin */	2625	break;
2268		2626
2269	*pend = 0;	2627	*pend = 0;
2270	w->wd = inotify_add_watch (fs_fd, path, mask);	2628	w->wd = inotify_add_watch (fs_fd, path, mask);
2271	}	2629	}
2272	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2630	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2273	}	2631	}
2274	}	2632	}
2275	else
2276	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2277		2633
2278	if (w->wd >= 0)	2634	if (w->wd >= 0)
		2635	{
2279	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	}
2280	}	2655	}
2281		2656
2282	static void noinline	2657	static void noinline
2283	infy_del (EV_P_ ev_stat *w)	2658	infy_del (EV_P_ ev_stat *w)
2284	{	2659	{
…		…
2298		2673
2299	static void noinline	2674	static void noinline
2300	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)
2301	{	2676	{
2302	if (slot < 0)	2677	if (slot < 0)
2303	/* overflow, need to check for all hahs slots */	2678	/* overflow, need to check for all hash slots */
2304	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2679	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2305	infy_wd (EV_A_ slot, wd, ev);	2680	infy_wd (EV_A_ slot, wd, ev);
2306	else	2681	else
2307	{	2682	{
2308	WL w_;	2683	WL w_;
…		…
2314		2689
2315	if (w->wd == wd || wd == -1)	2690	if (w->wd == wd || wd == -1)
2316	{	2691	{
2317	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2692	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2318	{	2693	{
		2694	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2319	w->wd = -1;	2695	w->wd = -1;
2320	infy_add (EV_A_ w); /* re-add, no matter what */	2696	infy_add (EV_A_ w); /* re-add, no matter what */
2321	}	2697	}
2322		2698
2323	stat_timer_cb (EV_A_ &w->timer, 0);	2699	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2336		2712
2337	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)
2338	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2714	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2339	}	2715	}
2340		2716
2341	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
2342	infy_init (EV_P)	2741	infy_init (EV_P)
2343	{	2742	{
2344	if (fs_fd != -2)	2743	if (fs_fd != -2)
2345	return;	2744	return;
		2745
		2746	fs_fd = -1;
		2747
		2748	check_2625 (EV_A);
2346		2749
2347	fs_fd = inotify_init ();	2750	fs_fd = inotify_init ();
2348		2751
2349	if (fs_fd >= 0)	2752	if (fs_fd >= 0)
2350	{	2753	{
…		…
2352	ev_set_priority (&fs_w, EV_MAXPRI);	2755	ev_set_priority (&fs_w, EV_MAXPRI);
2353	ev_io_start (EV_A_ &fs_w);	2756	ev_io_start (EV_A_ &fs_w);
2354	}	2757	}
2355	}	2758	}
2356		2759
2357	void inline_size	2760	inline_size void
2358	infy_fork (EV_P)	2761	infy_fork (EV_P)
2359	{	2762	{
2360	int slot;	2763	int slot;
2361		2764
2362	if (fs_fd < 0)	2765	if (fs_fd < 0)
…		…
2378	w->wd = -1;	2781	w->wd = -1;
2379		2782
2380	if (fs_fd >= 0)	2783	if (fs_fd >= 0)
2381	infy_add (EV_A_ w); /* re-add, no matter what */	2784	infy_add (EV_A_ w); /* re-add, no matter what */
2382	else	2785	else
2383	ev_timer_start (EV_A_ &w->timer);	2786	ev_timer_again (EV_A_ &w->timer);
2384	}	2787	}
2385
2386	}	2788	}
2387	}	2789	}
2388		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)
2389	#endif	2797	#endif
2390		2798
2391	void	2799	void
2392	ev_stat_stat (EV_P_ ev_stat *w)	2800	ev_stat_stat (EV_P_ ev_stat *w)
2393	{	2801	{
…		…
2420	|| w->prev.st_atime != w->attr.st_atime	2828	|| w->prev.st_atime != w->attr.st_atime
2421	|| w->prev.st_mtime != w->attr.st_mtime	2829	|| w->prev.st_mtime != w->attr.st_mtime
2422	|| w->prev.st_ctime != w->attr.st_ctime	2830	|| w->prev.st_ctime != w->attr.st_ctime
2423	) {	2831	) {
2424	#if EV_USE_INOTIFY	2832	#if EV_USE_INOTIFY
		2833	if (fs_fd >= 0)
		2834	{
2425	infy_del (EV_A_ w);	2835	infy_del (EV_A_ w);
2426	infy_add (EV_A_ w);	2836	infy_add (EV_A_ w);
2427	ev_stat_stat (EV_A_ w); /* avoid race... */	2837	ev_stat_stat (EV_A_ w); /* avoid race... */
		2838	}
2428	#endif	2839	#endif
2429		2840
2430	ev_feed_event (EV_A_ w, EV_STAT);	2841	ev_feed_event (EV_A_ w, EV_STAT);
2431	}	2842	}
2432	}	2843	}
…		…
2435	ev_stat_start (EV_P_ ev_stat *w)	2846	ev_stat_start (EV_P_ ev_stat *w)
2436	{	2847	{
2437	if (expect_false (ev_is_active (w)))	2848	if (expect_false (ev_is_active (w)))
2438	return;	2849	return;
2439		2850
2440	/* since we use memcmp, we need to clear any padding data etc. */
2441	memset (&w->prev, 0, sizeof (ev_statdata));
2442	memset (&w->attr, 0, sizeof (ev_statdata));
2443
2444	ev_stat_stat (EV_A_ w);	2851	ev_stat_stat (EV_A_ w);
2445		2852
		2853	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2446	if (w->interval < MIN_STAT_INTERVAL)	2854	w->interval = MIN_STAT_INTERVAL;
2447	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2448		2855
2449	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);
2450	ev_set_priority (&w->timer, ev_priority (w));	2857	ev_set_priority (&w->timer, ev_priority (w));
2451		2858
2452	#if EV_USE_INOTIFY	2859	#if EV_USE_INOTIFY
2453	infy_init (EV_A);	2860	infy_init (EV_A);
2454		2861
2455	if (fs_fd >= 0)	2862	if (fs_fd >= 0)
2456	infy_add (EV_A_ w);	2863	infy_add (EV_A_ w);
2457	else	2864	else
2458	#endif	2865	#endif
2459	ev_timer_start (EV_A_ &w->timer);	2866	ev_timer_again (EV_A_ &w->timer);
2460		2867
2461	ev_start (EV_A_ (W)w, 1);	2868	ev_start (EV_A_ (W)w, 1);
		2869
		2870	EV_FREQUENT_CHECK;
2462	}	2871	}
2463		2872
2464	void	2873	void
2465	ev_stat_stop (EV_P_ ev_stat *w)	2874	ev_stat_stop (EV_P_ ev_stat *w)
2466	{	2875	{
2467	clear_pending (EV_A_ (W)w);	2876	clear_pending (EV_A_ (W)w);
2468	if (expect_false (!ev_is_active (w)))	2877	if (expect_false (!ev_is_active (w)))
2469	return;	2878	return;
2470		2879
		2880	EV_FREQUENT_CHECK;
		2881
2471	#if EV_USE_INOTIFY	2882	#if EV_USE_INOTIFY
2472	infy_del (EV_A_ w);	2883	infy_del (EV_A_ w);
2473	#endif	2884	#endif
2474	ev_timer_stop (EV_A_ &w->timer);	2885	ev_timer_stop (EV_A_ &w->timer);
2475		2886
2476	ev_stop (EV_A_ (W)w);	2887	ev_stop (EV_A_ (W)w);
		2888
		2889	EV_FREQUENT_CHECK;
2477	}	2890	}
2478	#endif	2891	#endif
2479		2892
2480	#if EV_IDLE_ENABLE	2893	#if EV_IDLE_ENABLE
2481	void	2894	void
…		…
2483	{	2896	{
2484	if (expect_false (ev_is_active (w)))	2897	if (expect_false (ev_is_active (w)))
2485	return;	2898	return;
2486		2899
2487	pri_adjust (EV_A_ (W)w);	2900	pri_adjust (EV_A_ (W)w);
		2901
		2902	EV_FREQUENT_CHECK;
2488		2903
2489	{	2904	{
2490	int active = ++idlecnt [ABSPRI (w)];	2905	int active = ++idlecnt [ABSPRI (w)];
2491		2906
2492	++idleall;	2907	++idleall;
2493	ev_start (EV_A_ (W)w, active);	2908	ev_start (EV_A_ (W)w, active);
2494		2909
2495	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);
2496	idles [ABSPRI (w)][active - 1] = w;	2911	idles [ABSPRI (w)][active - 1] = w;
2497	}	2912	}
		2913
		2914	EV_FREQUENT_CHECK;
2498	}	2915	}
2499		2916
2500	void	2917	void
2501	ev_idle_stop (EV_P_ ev_idle *w)	2918	ev_idle_stop (EV_P_ ev_idle *w)
2502	{	2919	{
2503	clear_pending (EV_A_ (W)w);	2920	clear_pending (EV_A_ (W)w);
2504	if (expect_false (!ev_is_active (w)))	2921	if (expect_false (!ev_is_active (w)))
2505	return;	2922	return;
2506		2923
		2924	EV_FREQUENT_CHECK;
		2925
2507	{	2926	{
2508	int active = ev_active (w);	2927	int active = ev_active (w);
2509		2928
2510	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	2929	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2511	ev_active (idles [ABSPRI (w)][active - 1]) = active;	2930	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2512		2931
2513	ev_stop (EV_A_ (W)w);	2932	ev_stop (EV_A_ (W)w);
2514	--idleall;	2933	--idleall;
2515	}	2934	}
		2935
		2936	EV_FREQUENT_CHECK;
2516	}	2937	}
2517	#endif	2938	#endif
2518		2939
2519	void	2940	void
2520	ev_prepare_start (EV_P_ ev_prepare *w)	2941	ev_prepare_start (EV_P_ ev_prepare *w)
2521	{	2942	{
2522	if (expect_false (ev_is_active (w)))	2943	if (expect_false (ev_is_active (w)))
2523	return;	2944	return;
		2945
		2946	EV_FREQUENT_CHECK;
2524		2947
2525	ev_start (EV_A_ (W)w, ++preparecnt);	2948	ev_start (EV_A_ (W)w, ++preparecnt);
2526	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	2949	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2527	prepares [preparecnt - 1] = w;	2950	prepares [preparecnt - 1] = w;
		2951
		2952	EV_FREQUENT_CHECK;
2528	}	2953	}
2529		2954
2530	void	2955	void
2531	ev_prepare_stop (EV_P_ ev_prepare *w)	2956	ev_prepare_stop (EV_P_ ev_prepare *w)
2532	{	2957	{
2533	clear_pending (EV_A_ (W)w);	2958	clear_pending (EV_A_ (W)w);
2534	if (expect_false (!ev_is_active (w)))	2959	if (expect_false (!ev_is_active (w)))
2535	return;	2960	return;
2536		2961
		2962	EV_FREQUENT_CHECK;
		2963
2537	{	2964	{
2538	int active = ev_active (w);	2965	int active = ev_active (w);
2539		2966
2540	prepares [active - 1] = prepares [--preparecnt];	2967	prepares [active - 1] = prepares [--preparecnt];
2541	ev_active (prepares [active - 1]) = active;	2968	ev_active (prepares [active - 1]) = active;
2542	}	2969	}
2543		2970
2544	ev_stop (EV_A_ (W)w);	2971	ev_stop (EV_A_ (W)w);
		2972
		2973	EV_FREQUENT_CHECK;
2545	}	2974	}
2546		2975
2547	void	2976	void
2548	ev_check_start (EV_P_ ev_check *w)	2977	ev_check_start (EV_P_ ev_check *w)
2549	{	2978	{
2550	if (expect_false (ev_is_active (w)))	2979	if (expect_false (ev_is_active (w)))
2551	return;	2980	return;
		2981
		2982	EV_FREQUENT_CHECK;
2552		2983
2553	ev_start (EV_A_ (W)w, ++checkcnt);	2984	ev_start (EV_A_ (W)w, ++checkcnt);
2554	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	2985	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2555	checks [checkcnt - 1] = w;	2986	checks [checkcnt - 1] = w;
		2987
		2988	EV_FREQUENT_CHECK;
2556	}	2989	}
2557		2990
2558	void	2991	void
2559	ev_check_stop (EV_P_ ev_check *w)	2992	ev_check_stop (EV_P_ ev_check *w)
2560	{	2993	{
2561	clear_pending (EV_A_ (W)w);	2994	clear_pending (EV_A_ (W)w);
2562	if (expect_false (!ev_is_active (w)))	2995	if (expect_false (!ev_is_active (w)))
2563	return;	2996	return;
2564		2997
		2998	EV_FREQUENT_CHECK;
		2999
2565	{	3000	{
2566	int active = ev_active (w);	3001	int active = ev_active (w);
2567		3002
2568	checks [active - 1] = checks [--checkcnt];	3003	checks [active - 1] = checks [--checkcnt];
2569	ev_active (checks [active - 1]) = active;	3004	ev_active (checks [active - 1]) = active;
2570	}	3005	}
2571		3006
2572	ev_stop (EV_A_ (W)w);	3007	ev_stop (EV_A_ (W)w);
		3008
		3009	EV_FREQUENT_CHECK;
2573	}	3010	}
2574		3011
2575	#if EV_EMBED_ENABLE	3012	#if EV_EMBED_ENABLE
2576	void noinline	3013	void noinline
2577	ev_embed_sweep (EV_P_ ev_embed *w)	3014	ev_embed_sweep (EV_P_ ev_embed *w)
…		…
2604	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3041	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2605	}	3042	}
2606	}	3043	}
2607	}	3044	}
2608		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
2609	#if 0	3063	#if 0
2610	static void	3064	static void
2611	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3065	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2612	{	3066	{
2613	ev_idle_stop (EV_A_ idle);	3067	ev_idle_stop (EV_A_ idle);
…		…
2620	if (expect_false (ev_is_active (w)))	3074	if (expect_false (ev_is_active (w)))
2621	return;	3075	return;
2622		3076
2623	{	3077	{
2624	struct ev_loop *loop = w->other;	3078	struct ev_loop *loop = w->other;
2625	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 ()));
2626	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);
2627	}	3081	}
		3082
		3083	EV_FREQUENT_CHECK;
2628		3084
2629	ev_set_priority (&w->io, ev_priority (w));	3085	ev_set_priority (&w->io, ev_priority (w));
2630	ev_io_start (EV_A_ &w->io);	3086	ev_io_start (EV_A_ &w->io);
2631		3087
2632	ev_prepare_init (&w->prepare, embed_prepare_cb);	3088	ev_prepare_init (&w->prepare, embed_prepare_cb);
2633	ev_set_priority (&w->prepare, EV_MINPRI);	3089	ev_set_priority (&w->prepare, EV_MINPRI);
2634	ev_prepare_start (EV_A_ &w->prepare);	3090	ev_prepare_start (EV_A_ &w->prepare);
2635		3091
		3092	ev_fork_init (&w->fork, embed_fork_cb);
		3093	ev_fork_start (EV_A_ &w->fork);
		3094
2636	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3095	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2637		3096
2638	ev_start (EV_A_ (W)w, 1);	3097	ev_start (EV_A_ (W)w, 1);
		3098
		3099	EV_FREQUENT_CHECK;
2639	}	3100	}
2640		3101
2641	void	3102	void
2642	ev_embed_stop (EV_P_ ev_embed *w)	3103	ev_embed_stop (EV_P_ ev_embed *w)
2643	{	3104	{
2644	clear_pending (EV_A_ (W)w);	3105	clear_pending (EV_A_ (W)w);
2645	if (expect_false (!ev_is_active (w)))	3106	if (expect_false (!ev_is_active (w)))
2646	return;	3107	return;
2647		3108
		3109	EV_FREQUENT_CHECK;
		3110
2648	ev_io_stop (EV_A_ &w->io);	3111	ev_io_stop (EV_A_ &w->io);
2649	ev_prepare_stop (EV_A_ &w->prepare);	3112	ev_prepare_stop (EV_A_ &w->prepare);
		3113	ev_fork_stop (EV_A_ &w->fork);
2650		3114
2651	ev_stop (EV_A_ (W)w);	3115	EV_FREQUENT_CHECK;
2652	}	3116	}
2653	#endif	3117	#endif
2654		3118
2655	#if EV_FORK_ENABLE	3119	#if EV_FORK_ENABLE
2656	void	3120	void
2657	ev_fork_start (EV_P_ ev_fork *w)	3121	ev_fork_start (EV_P_ ev_fork *w)
2658	{	3122	{
2659	if (expect_false (ev_is_active (w)))	3123	if (expect_false (ev_is_active (w)))
2660	return;	3124	return;
		3125
		3126	EV_FREQUENT_CHECK;
2661		3127
2662	ev_start (EV_A_ (W)w, ++forkcnt);	3128	ev_start (EV_A_ (W)w, ++forkcnt);
2663	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3129	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2664	forks [forkcnt - 1] = w;	3130	forks [forkcnt - 1] = w;
		3131
		3132	EV_FREQUENT_CHECK;
2665	}	3133	}
2666		3134
2667	void	3135	void
2668	ev_fork_stop (EV_P_ ev_fork *w)	3136	ev_fork_stop (EV_P_ ev_fork *w)
2669	{	3137	{
2670	clear_pending (EV_A_ (W)w);	3138	clear_pending (EV_A_ (W)w);
2671	if (expect_false (!ev_is_active (w)))	3139	if (expect_false (!ev_is_active (w)))
2672	return;	3140	return;
2673		3141
		3142	EV_FREQUENT_CHECK;
		3143
2674	{	3144	{
2675	int active = ev_active (w);	3145	int active = ev_active (w);
2676		3146
2677	forks [active - 1] = forks [--forkcnt];	3147	forks [active - 1] = forks [--forkcnt];
2678	ev_active (forks [active - 1]) = active;	3148	ev_active (forks [active - 1]) = active;
2679	}	3149	}
2680		3150
2681	ev_stop (EV_A_ (W)w);	3151	ev_stop (EV_A_ (W)w);
		3152
		3153	EV_FREQUENT_CHECK;
2682	}	3154	}
2683	#endif	3155	#endif
2684		3156
2685	#if EV_ASYNC_ENABLE	3157	#if EV_ASYNC_ENABLE
2686	void	3158	void
…		…
2688	{	3160	{
2689	if (expect_false (ev_is_active (w)))	3161	if (expect_false (ev_is_active (w)))
2690	return;	3162	return;
2691		3163
2692	evpipe_init (EV_A);	3164	evpipe_init (EV_A);
		3165
		3166	EV_FREQUENT_CHECK;
2693		3167
2694	ev_start (EV_A_ (W)w, ++asynccnt);	3168	ev_start (EV_A_ (W)w, ++asynccnt);
2695	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);	3169	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2696	asyncs [asynccnt - 1] = w;	3170	asyncs [asynccnt - 1] = w;
		3171
		3172	EV_FREQUENT_CHECK;
2697	}	3173	}
2698		3174
2699	void	3175	void
2700	ev_async_stop (EV_P_ ev_async *w)	3176	ev_async_stop (EV_P_ ev_async *w)
2701	{	3177	{
2702	clear_pending (EV_A_ (W)w);	3178	clear_pending (EV_A_ (W)w);
2703	if (expect_false (!ev_is_active (w)))	3179	if (expect_false (!ev_is_active (w)))
2704	return;	3180	return;
2705		3181
		3182	EV_FREQUENT_CHECK;
		3183
2706	{	3184	{
2707	int active = ev_active (w);	3185	int active = ev_active (w);
2708		3186
2709	asyncs [active - 1] = asyncs [--asynccnt];	3187	asyncs [active - 1] = asyncs [--asynccnt];
2710	ev_active (asyncs [active - 1]) = active;	3188	ev_active (asyncs [active - 1]) = active;
2711	}	3189	}
2712		3190
2713	ev_stop (EV_A_ (W)w);	3191	ev_stop (EV_A_ (W)w);
		3192
		3193	EV_FREQUENT_CHECK;
2714	}	3194	}
2715		3195
2716	void	3196	void
2717	ev_async_send (EV_P_ ev_async *w)	3197	ev_async_send (EV_P_ ev_async *w)
2718	{	3198	{
…		…
2735	once_cb (EV_P_ struct ev_once *once, int revents)	3215	once_cb (EV_P_ struct ev_once *once, int revents)
2736	{	3216	{
2737	void (*cb)(int revents, void *arg) = once->cb;	3217	void (*cb)(int revents, void *arg) = once->cb;
2738	void *arg = once->arg;	3218	void *arg = once->arg;
2739		3219
2740	ev_io_stop (EV_A_ &once->io);	3220	ev_io_stop (EV_A_ &once->io);
2741	ev_timer_stop (EV_A_ &once->to);	3221	ev_timer_stop (EV_A_ &once->to);
2742	ev_free (once);	3222	ev_free (once);
2743		3223
2744	cb (revents, arg);	3224	cb (revents, arg);
2745	}	3225	}
2746		3226
2747	static void	3227	static void
2748	once_cb_io (EV_P_ ev_io *w, int revents)	3228	once_cb_io (EV_P_ ev_io *w, int revents)
2749	{	3229	{
2750	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));
2751	}	3233	}
2752		3234
2753	static void	3235	static void
2754	once_cb_to (EV_P_ ev_timer *w, int revents)	3236	once_cb_to (EV_P_ ev_timer *w, int revents)
2755	{	3237	{
2756	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));
2757	}	3241	}
2758		3242
2759	void	3243	void
2760	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)
2761	{	3245	{
…		…
2783	ev_timer_set (&once->to, timeout, 0.);	3267	ev_timer_set (&once->to, timeout, 0.);
2784	ev_timer_start (EV_A_ &once->to);	3268	ev_timer_start (EV_A_ &once->to);
2785	}	3269	}
2786	}	3270	}
2787		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
2788	#if EV_MULTIPLICITY	3380	#if EV_MULTIPLICITY
2789	#include "ev_wrap.h"	3381	#include "ev_wrap.h"
2790	#endif	3382	#endif
2791		3383
2792	#ifdef __cplusplus	3384	#ifdef __cplusplus

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