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Comparing libev/ev.c (file contents):
Revision 1.247 by root, Wed May 21 21:22:10 2008 UTC vs.
Revision 1.296 by root, Thu Jul 9 09:11:20 2009 UTC

1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without modifica-	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* tion, are permitted provided that the following conditions are met:	8	* tion, are permitted provided that the following conditions are met:
9	*	9	*
…		…
47	# include EV_CONFIG_H	47	# include EV_CONFIG_H
48	# else	48	# else
49	# include "config.h"	49	# include "config.h"
50	# endif	50	# endif
51		51
		52	# if HAVE_CLOCK_SYSCALL
		53	# ifndef EV_USE_CLOCK_SYSCALL
		54	# define EV_USE_CLOCK_SYSCALL 1
		55	# ifndef EV_USE_REALTIME
		56	# define EV_USE_REALTIME 0
		57	# endif
		58	# ifndef EV_USE_MONOTONIC
		59	# define EV_USE_MONOTONIC 1
		60	# endif
		61	# endif
		62	# elif !defined(EV_USE_CLOCK_SYSCALL)
		63	# define EV_USE_CLOCK_SYSCALL 0
		64	# endif
		65
52	# if HAVE_CLOCK_GETTIME	66	# if HAVE_CLOCK_GETTIME
53	# ifndef EV_USE_MONOTONIC	67	# ifndef EV_USE_MONOTONIC
54	# define EV_USE_MONOTONIC 1	68	# define EV_USE_MONOTONIC 1
55	# endif	69	# endif
56	# ifndef EV_USE_REALTIME	70	# ifndef EV_USE_REALTIME
57	# define EV_USE_REALTIME 1	71	# define EV_USE_REALTIME 0
58	# endif	72	# endif
59	# else	73	# else
60	# ifndef EV_USE_MONOTONIC	74	# ifndef EV_USE_MONOTONIC
61	# define EV_USE_MONOTONIC 0	75	# define EV_USE_MONOTONIC 0
62	# endif	76	# endif
…		…
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
…		…
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	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)	920	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
808		921	#define UPHEAP_DONE(p,k) ((p) == (k))
809	/* towards the root */
810	void inline_speed
811	upheap (ANHE *heap, int k)
812	{
813	ANHE he = heap [k];
814
815	for (;;)
816	{
817	int p = HPARENT (k);
818
819	if (p == k || ANHE_at (heap [p]) <= ANHE_at (he))
820	break;
821
822	heap [k] = heap [p];
823	ev_active (ANHE_w (heap [k])) = k;
824	k = p;
825	}
826
827	heap [k] = he;
828	ev_active (ANHE_w (he)) = k;
829	}
830		922
831	/* away from the root */	923	/* away from the root */
832	void inline_speed	924	inline_speed void
833	downheap (ANHE *heap, int N, int k)	925	downheap (ANHE *heap, int N, int k)
834	{	926	{
835	ANHE he = heap [k];	927	ANHE he = heap [k];
836	ANHE *E = heap + N + HEAP0;	928	ANHE *E = heap + N + HEAP0;
837		929
838	for (;;)	930	for (;;)
839	{	931	{
840	ev_tstamp minat;	932	ev_tstamp minat;
841	ANHE *minpos;	933	ANHE *minpos;
842	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0;	934	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
843		935
844	// find minimum child	936	/* find minimum child */
845	if (expect_true (pos + DHEAP - 1 < E))	937	if (expect_true (pos + DHEAP - 1 < E))
846	{	938	{
847	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));	939	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
848	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));
849	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));
…		…
870		962
871	heap [k] = he;	963	heap [k] = he;
872	ev_active (ANHE_w (he)) = k;	964	ev_active (ANHE_w (he)) = k;
873	}	965	}
874		966
875	#else // 4HEAP	967	#else /* 4HEAP */
876		968
877	#define HEAP0 1	969	#define HEAP0 1
878	#define HPARENT(k) ((k) >> 1)	970	#define HPARENT(k) ((k) >> 1)
		971	#define UPHEAP_DONE(p,k) (!(p))
879		972
880	/* towards the root */	973	/* away from the root */
881	void inline_speed	974	inline_speed void
882	upheap (ANHE *heap, int k)	975	downheap (ANHE *heap, int N, int k)
883	{	976	{
884	ANHE he = heap [k];	977	ANHE he = heap [k];
885		978
886	for (;;)	979	for (;;)
887	{	980	{
888	int p = HPARENT (k);	981	int c = k << 1;
889		982
890	/* maybe we could use a dummy element at heap [0]? */	983	if (c > N + HEAP0 - 1)
891	if (!p || ANHE_at (heap [p]) <= ANHE_at (he))
892	break;	984	break;
893		985
894	heap [k] = heap [p];
895	ev_active (ANHE_w (heap [k])) = k;
896	k = p;
897	}
898
899	heap [k] = he;
900	ev_active (ANHE_w (heap [k])) = k;
901	}
902
903	/* away from the root */
904	void inline_speed
905	downheap (ANHE *heap, int N, int k)
906	{
907	ANHE he = heap [k];
908
909	for (;;)
910	{
911	int c = k << 1;
912
913	if (c > N)
914	break;
915
916	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])
917	? 1 : 0;	987	? 1 : 0;
918		988
919	if (ANHE_at (he) <= ANHE_at (heap [c]))	989	if (ANHE_at (he) <= ANHE_at (heap [c]))
920	break;	990	break;
921		991
…		…
928	heap [k] = he;	998	heap [k] = he;
929	ev_active (ANHE_w (he)) = k;	999	ev_active (ANHE_w (he)) = k;
930	}	1000	}
931	#endif	1001	#endif
932		1002
933	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
934	adjustheap (ANHE *heap, int N, int k)	1027	adjustheap (ANHE *heap, int N, int k)
935	{	1028	{
936	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1029	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
937	upheap (heap, k);	1030	upheap (heap, k);
938	else	1031	else
939	downheap (heap, N, k);	1032	downheap (heap, N, k);
940	}	1033	}
941		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);
		1045	}
		1046
942	/*****************************************************************************/	1047	/*****************************************************************************/
943		1048
		1049	/* associate signal watchers to a signal signal */
944	typedef struct	1050	typedef struct
945	{	1051	{
946	WL head;	1052	WL head;
947	EV_ATOMIC_T gotsig;	1053	EV_ATOMIC_T gotsig;
948	} ANSIG;	1054	} ANSIG;
…		…
950	static ANSIG *signals;	1056	static ANSIG *signals;
951	static int signalmax;	1057	static int signalmax;
952		1058
953	static EV_ATOMIC_T gotsig;	1059	static EV_ATOMIC_T gotsig;
954		1060
955	void inline_size
956	signals_init (ANSIG *base, int count)
957	{
958	while (count--)
959	{
960	base->head = 0;
961	base->gotsig = 0;
962
963	++base;
964	}
965	}
966
967	/*****************************************************************************/	1061	/*****************************************************************************/
968		1062
969	void inline_speed	1063	/* used to prepare libev internal fd's */
		1064	/* this is not fork-safe */
		1065	inline_speed void
970	fd_intern (int fd)	1066	fd_intern (int fd)
971	{	1067	{
972	#ifdef _WIN32	1068	#ifdef _WIN32
973	int arg = 1;	1069	unsigned long arg = 1;
974	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1070	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
975	#else	1071	#else
976	fcntl (fd, F_SETFD, FD_CLOEXEC);	1072	fcntl (fd, F_SETFD, FD_CLOEXEC);
977	fcntl (fd, F_SETFL, O_NONBLOCK);	1073	fcntl (fd, F_SETFL, O_NONBLOCK);
978	#endif	1074	#endif
979	}	1075	}
980		1076
981	static void noinline	1077	static void noinline
982	evpipe_init (EV_P)	1078	evpipe_init (EV_P)
983	{	1079	{
984	if (!ev_is_active (&pipeev))	1080	if (!ev_is_active (&pipe_w))
985	{	1081	{
986	#if EV_USE_EVENTFD	1082	#if EV_USE_EVENTFD
987	if ((evfd = eventfd (0, 0)) >= 0)	1083	if ((evfd = eventfd (0, 0)) >= 0)
988	{	1084	{
989	evpipe [0] = -1;	1085	evpipe [0] = -1;
990	fd_intern (evfd);	1086	fd_intern (evfd);
991	ev_io_set (&pipeev, evfd, EV_READ);	1087	ev_io_set (&pipe_w, evfd, EV_READ);
992	}	1088	}
993	else	1089	else
994	#endif	1090	#endif
995	{	1091	{
996	while (pipe (evpipe))	1092	while (pipe (evpipe))
997	syserr ("(libev) error creating signal/async pipe");	1093	ev_syserr ("(libev) error creating signal/async pipe");
998		1094
999	fd_intern (evpipe [0]);	1095	fd_intern (evpipe [0]);
1000	fd_intern (evpipe [1]);	1096	fd_intern (evpipe [1]);
1001	ev_io_set (&pipeev, evpipe [0], EV_READ);	1097	ev_io_set (&pipe_w, evpipe [0], EV_READ);
1002	}	1098	}
1003		1099
1004	ev_io_start (EV_A_ &pipeev);	1100	ev_io_start (EV_A_ &pipe_w);
1005	ev_unref (EV_A); /* watcher should not keep loop alive */	1101	ev_unref (EV_A); /* watcher should not keep loop alive */
1006	}	1102	}
1007	}	1103	}
1008		1104
1009	void inline_size	1105	inline_size void
1010	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1106	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1011	{	1107	{
1012	if (!*flag)	1108	if (!*flag)
1013	{	1109	{
1014	int old_errno = errno; /* save errno because write might clobber it */	1110	int old_errno = errno; /* save errno because write might clobber it */
…		…
1027		1123
1028	errno = old_errno;	1124	errno = old_errno;
1029	}	1125	}
1030	}	1126	}
1031		1127
		1128	/* called whenever the libev signal pipe */
		1129	/* got some events (signal, async) */
1032	static void	1130	static void
1033	pipecb (EV_P_ ev_io *iow, int revents)	1131	pipecb (EV_P_ ev_io *iow, int revents)
1034	{	1132	{
1035	#if EV_USE_EVENTFD	1133	#if EV_USE_EVENTFD
1036	if (evfd >= 0)	1134	if (evfd >= 0)
…		…
1092	ev_feed_signal_event (EV_P_ int signum)	1190	ev_feed_signal_event (EV_P_ int signum)
1093	{	1191	{
1094	WL w;	1192	WL w;
1095		1193
1096	#if EV_MULTIPLICITY	1194	#if EV_MULTIPLICITY
1097	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));
1098	#endif	1196	#endif
1099		1197
1100	--signum;	1198	--signum;
1101		1199
1102	if (signum < 0 || signum >= signalmax)	1200	if (signum < 0 || signum >= signalmax)
…		…
1118		1216
1119	#ifndef WIFCONTINUED	1217	#ifndef WIFCONTINUED
1120	# define WIFCONTINUED(status) 0	1218	# define WIFCONTINUED(status) 0
1121	#endif	1219	#endif
1122		1220
1123	void inline_speed	1221	/* handle a single child status event */
		1222	inline_speed void
1124	child_reap (EV_P_ int chain, int pid, int status)	1223	child_reap (EV_P_ int chain, int pid, int status)
1125	{	1224	{
1126	ev_child *w;	1225	ev_child *w;
1127	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1226	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1128		1227
…		…
1141		1240
1142	#ifndef WCONTINUED	1241	#ifndef WCONTINUED
1143	# define WCONTINUED 0	1242	# define WCONTINUED 0
1144	#endif	1243	#endif
1145		1244
		1245	/* called on sigchld etc., calls waitpid */
1146	static void	1246	static void
1147	childcb (EV_P_ ev_signal *sw, int revents)	1247	childcb (EV_P_ ev_signal *sw, int revents)
1148	{	1248	{
1149	int pid, status;	1249	int pid, status;
1150		1250
…		…
1231	/* kqueue is borked on everything but netbsd apparently */	1331	/* kqueue is borked on everything but netbsd apparently */
1232	/* 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 */
1233	flags &= ~EVBACKEND_KQUEUE;	1333	flags &= ~EVBACKEND_KQUEUE;
1234	#endif	1334	#endif
1235	#ifdef __APPLE__	1335	#ifdef __APPLE__
1236	// flags &= ~EVBACKEND_KQUEUE; for documentation	1336	/* only select works correctly on that "unix-certified" platform */
1237	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 */
1238	#endif	1339	#endif
1239		1340
1240	return flags;	1341	return flags;
1241	}	1342	}
1242		1343
…		…
1262	ev_loop_count (EV_P)	1363	ev_loop_count (EV_P)
1263	{	1364	{
1264	return loop_count;	1365	return loop_count;
1265	}	1366	}
1266		1367
		1368	unsigned int
		1369	ev_loop_depth (EV_P)
		1370	{
		1371	return loop_depth;
		1372	}
		1373
1267	void	1374	void
1268	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1375	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1269	{	1376	{
1270	io_blocktime = interval;	1377	io_blocktime = interval;
1271	}	1378	}
…		…
1274	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1381	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1275	{	1382	{
1276	timeout_blocktime = interval;	1383	timeout_blocktime = interval;
1277	}	1384	}
1278		1385
		1386	/* initialise a loop structure, must be zero-initialised */
1279	static void noinline	1387	static void noinline
1280	loop_init (EV_P_ unsigned int flags)	1388	loop_init (EV_P_ unsigned int flags)
1281	{	1389	{
1282	if (!backend)	1390	if (!backend)
1283	{	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
1284	#if EV_USE_MONOTONIC	1402	#if EV_USE_MONOTONIC
		1403	if (!have_monotonic)
1285	{	1404	{
1286	struct timespec ts;	1405	struct timespec ts;
		1406
1287	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1407	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1288	have_monotonic = 1;	1408	have_monotonic = 1;
1289	}	1409	}
1290	#endif	1410	#endif
1291		1411
1292	ev_rt_now = ev_time ();	1412	ev_rt_now = ev_time ();
1293	mn_now = get_clock ();	1413	mn_now = get_clock ();
1294	now_floor = mn_now;	1414	now_floor = mn_now;
1295	rtmn_diff = ev_rt_now - mn_now;	1415	rtmn_diff = ev_rt_now - mn_now;
		1416	invoke_cb = ev_invoke_pending;
1296		1417
1297	io_blocktime = 0.;	1418	io_blocktime = 0.;
1298	timeout_blocktime = 0.;	1419	timeout_blocktime = 0.;
1299	backend = 0;	1420	backend = 0;
1300	backend_fd = -1;	1421	backend_fd = -1;
…		…
1331	#endif	1452	#endif
1332	#if EV_USE_SELECT	1453	#if EV_USE_SELECT
1333	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1454	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1334	#endif	1455	#endif
1335		1456
		1457	ev_prepare_init (&pending_w, pendingcb);
		1458
1336	ev_init (&pipeev, pipecb);	1459	ev_init (&pipe_w, pipecb);
1337	ev_set_priority (&pipeev, EV_MAXPRI);	1460	ev_set_priority (&pipe_w, EV_MAXPRI);
1338	}	1461	}
1339	}	1462	}
1340		1463
		1464	/* free up a loop structure */
1341	static void noinline	1465	static void noinline
1342	loop_destroy (EV_P)	1466	loop_destroy (EV_P)
1343	{	1467	{
1344	int i;	1468	int i;
1345		1469
1346	if (ev_is_active (&pipeev))	1470	if (ev_is_active (&pipe_w))
1347	{	1471	{
1348	ev_ref (EV_A); /* signal watcher */	1472	ev_ref (EV_A); /* signal watcher */
1349	ev_io_stop (EV_A_ &pipeev);	1473	ev_io_stop (EV_A_ &pipe_w);
1350		1474
1351	#if EV_USE_EVENTFD	1475	#if EV_USE_EVENTFD
1352	if (evfd >= 0)	1476	if (evfd >= 0)
1353	close (evfd);	1477	close (evfd);
1354	#endif	1478	#endif
…		…
1393	}	1517	}
1394		1518
1395	ev_free (anfds); anfdmax = 0;	1519	ev_free (anfds); anfdmax = 0;
1396		1520
1397	/* have to use the microsoft-never-gets-it-right macro */	1521	/* have to use the microsoft-never-gets-it-right macro */
		1522	array_free (rfeed, EMPTY);
1398	array_free (fdchange, EMPTY);	1523	array_free (fdchange, EMPTY);
1399	array_free (timer, EMPTY);	1524	array_free (timer, EMPTY);
1400	#if EV_PERIODIC_ENABLE	1525	#if EV_PERIODIC_ENABLE
1401	array_free (periodic, EMPTY);	1526	array_free (periodic, EMPTY);
1402	#endif	1527	#endif
…		…
1411		1536
1412	backend = 0;	1537	backend = 0;
1413	}	1538	}
1414		1539
1415	#if EV_USE_INOTIFY	1540	#if EV_USE_INOTIFY
1416	void inline_size infy_fork (EV_P);	1541	inline_size void infy_fork (EV_P);
1417	#endif	1542	#endif
1418		1543
1419	void inline_size	1544	inline_size void
1420	loop_fork (EV_P)	1545	loop_fork (EV_P)
1421	{	1546	{
1422	#if EV_USE_PORT	1547	#if EV_USE_PORT
1423	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1548	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1424	#endif	1549	#endif
…		…
1430	#endif	1555	#endif
1431	#if EV_USE_INOTIFY	1556	#if EV_USE_INOTIFY
1432	infy_fork (EV_A);	1557	infy_fork (EV_A);
1433	#endif	1558	#endif
1434		1559
1435	if (ev_is_active (&pipeev))	1560	if (ev_is_active (&pipe_w))
1436	{	1561	{
1437	/* this "locks" the handlers against writing to the pipe */	1562	/* this "locks" the handlers against writing to the pipe */
1438	/* while we modify the fd vars */	1563	/* while we modify the fd vars */
1439	gotsig = 1;	1564	gotsig = 1;
1440	#if EV_ASYNC_ENABLE	1565	#if EV_ASYNC_ENABLE
1441	gotasync = 1;	1566	gotasync = 1;
1442	#endif	1567	#endif
1443		1568
1444	ev_ref (EV_A);	1569	ev_ref (EV_A);
1445	ev_io_stop (EV_A_ &pipeev);	1570	ev_io_stop (EV_A_ &pipe_w);
1446		1571
1447	#if EV_USE_EVENTFD	1572	#if EV_USE_EVENTFD
1448	if (evfd >= 0)	1573	if (evfd >= 0)
1449	close (evfd);	1574	close (evfd);
1450	#endif	1575	#endif
…		…
1455	close (evpipe [1]);	1580	close (evpipe [1]);
1456	}	1581	}
1457		1582
1458	evpipe_init (EV_A);	1583	evpipe_init (EV_A);
1459	/* now iterate over everything, in case we missed something */	1584	/* now iterate over everything, in case we missed something */
1460	pipecb (EV_A_ &pipeev, EV_READ);	1585	pipecb (EV_A_ &pipe_w, EV_READ);
1461	}	1586	}
1462		1587
1463	postfork = 0;	1588	postfork = 0;
1464	}	1589	}
1465		1590
1466	#if EV_MULTIPLICITY	1591	#if EV_MULTIPLICITY
		1592
1467	struct ev_loop *	1593	struct ev_loop *
1468	ev_loop_new (unsigned int flags)	1594	ev_loop_new (unsigned int flags)
1469	{	1595	{
1470	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1596	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1471		1597
…		…
1489	void	1615	void
1490	ev_loop_fork (EV_P)	1616	ev_loop_fork (EV_P)
1491	{	1617	{
1492	postfork = 1; /* must be in line with ev_default_fork */	1618	postfork = 1; /* must be in line with ev_default_fork */
1493	}	1619	}
		1620
		1621	#if EV_VERIFY
		1622	static void noinline
		1623	verify_watcher (EV_P_ W w)
		1624	{
		1625	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1626
		1627	if (w->pending)
		1628	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1629	}
		1630
		1631	static void noinline
		1632	verify_heap (EV_P_ ANHE *heap, int N)
		1633	{
		1634	int i;
		1635
		1636	for (i = HEAP0; i < N + HEAP0; ++i)
		1637	{
		1638	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1639	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1640	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1641
		1642	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1643	}
		1644	}
		1645
		1646	static void noinline
		1647	array_verify (EV_P_ W *ws, int cnt)
		1648	{
		1649	while (cnt--)
		1650	{
		1651	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1652	verify_watcher (EV_A_ ws [cnt]);
		1653	}
		1654	}
		1655	#endif
		1656
		1657	void
		1658	ev_loop_verify (EV_P)
		1659	{
		1660	#if EV_VERIFY
		1661	int i;
		1662	WL w;
		1663
		1664	assert (activecnt >= -1);
		1665
		1666	assert (fdchangemax >= fdchangecnt);
		1667	for (i = 0; i < fdchangecnt; ++i)
		1668	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1669
		1670	assert (anfdmax >= 0);
		1671	for (i = 0; i < anfdmax; ++i)
		1672	for (w = anfds [i].head; w; w = w->next)
		1673	{
		1674	verify_watcher (EV_A_ (W)w);
		1675	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1676	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1677	}
		1678
		1679	assert (timermax >= timercnt);
		1680	verify_heap (EV_A_ timers, timercnt);
		1681
		1682	#if EV_PERIODIC_ENABLE
		1683	assert (periodicmax >= periodiccnt);
		1684	verify_heap (EV_A_ periodics, periodiccnt);
		1685	#endif
		1686
		1687	for (i = NUMPRI; i--; )
		1688	{
		1689	assert (pendingmax [i] >= pendingcnt [i]);
		1690	#if EV_IDLE_ENABLE
		1691	assert (idleall >= 0);
		1692	assert (idlemax [i] >= idlecnt [i]);
		1693	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		1694	#endif
		1695	}
		1696
		1697	#if EV_FORK_ENABLE
		1698	assert (forkmax >= forkcnt);
		1699	array_verify (EV_A_ (W *)forks, forkcnt);
		1700	#endif
		1701
		1702	#if EV_ASYNC_ENABLE
		1703	assert (asyncmax >= asynccnt);
		1704	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1705	#endif
		1706
		1707	assert (preparemax >= preparecnt);
		1708	array_verify (EV_A_ (W *)prepares, preparecnt);
		1709
		1710	assert (checkmax >= checkcnt);
		1711	array_verify (EV_A_ (W *)checks, checkcnt);
		1712
		1713	# if 0
		1714	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1715	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1494	#endif	1716	# endif
		1717	#endif
		1718	}
		1719
		1720	#endif /* multiplicity */
1495		1721
1496	#if EV_MULTIPLICITY	1722	#if EV_MULTIPLICITY
1497	struct ev_loop *	1723	struct ev_loop *
1498	ev_default_loop_init (unsigned int flags)	1724	ev_default_loop_init (unsigned int flags)
1499	#else	1725	#else
…		…
1532	{	1758	{
1533	#if EV_MULTIPLICITY	1759	#if EV_MULTIPLICITY
1534	struct ev_loop *loop = ev_default_loop_ptr;	1760	struct ev_loop *loop = ev_default_loop_ptr;
1535	#endif	1761	#endif
1536		1762
		1763	ev_default_loop_ptr = 0;
		1764
1537	#ifndef _WIN32	1765	#ifndef _WIN32
1538	ev_ref (EV_A); /* child watcher */	1766	ev_ref (EV_A); /* child watcher */
1539	ev_signal_stop (EV_A_ &childev);	1767	ev_signal_stop (EV_A_ &childev);
1540	#endif	1768	#endif
1541		1769
…		…
1547	{	1775	{
1548	#if EV_MULTIPLICITY	1776	#if EV_MULTIPLICITY
1549	struct ev_loop *loop = ev_default_loop_ptr;	1777	struct ev_loop *loop = ev_default_loop_ptr;
1550	#endif	1778	#endif
1551		1779
1552	if (backend)
1553	postfork = 1; /* must be in line with ev_loop_fork */	1780	postfork = 1; /* must be in line with ev_loop_fork */
1554	}	1781	}
1555		1782
1556	/*****************************************************************************/	1783	/*****************************************************************************/
1557		1784
1558	void	1785	void
1559	ev_invoke (EV_P_ void *w, int revents)	1786	ev_invoke (EV_P_ void *w, int revents)
1560	{	1787	{
1561	EV_CB_INVOKE ((W)w, revents);	1788	EV_CB_INVOKE ((W)w, revents);
1562	}	1789	}
1563		1790
1564	void inline_speed	1791	void
1565	call_pending (EV_P)	1792	ev_invoke_pending (EV_P)
1566	{	1793	{
1567	int pri;	1794	int pri;
1568		1795
1569	for (pri = NUMPRI; pri--; )	1796	for (pri = NUMPRI; pri--; )
1570	while (pendingcnt [pri])	1797	while (pendingcnt [pri])
1571	{	1798	{
1572	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1799	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1573		1800
1574	if (expect_true (p->w))
1575	{
1576	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1801	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1802	/* ^ this is no longer true, as pending_w could be here */
1577		1803
1578	p->w->pending = 0;	1804	p->w->pending = 0;
1579	EV_CB_INVOKE (p->w, p->events);	1805	EV_CB_INVOKE (p->w, p->events);
1580	}	1806	EV_FREQUENT_CHECK;
1581	}	1807	}
1582	}	1808	}
1583		1809
1584	#if EV_IDLE_ENABLE	1810	#if EV_IDLE_ENABLE
1585	void inline_size	1811	/* make idle watchers pending. this handles the "call-idle */
		1812	/* only when higher priorities are idle" logic */
		1813	inline_size void
1586	idle_reify (EV_P)	1814	idle_reify (EV_P)
1587	{	1815	{
1588	if (expect_false (idleall))	1816	if (expect_false (idleall))
1589	{	1817	{
1590	int pri;	1818	int pri;
…		…
1602	}	1830	}
1603	}	1831	}
1604	}	1832	}
1605	#endif	1833	#endif
1606		1834
1607	void inline_size	1835	/* make timers pending */
		1836	inline_size void
1608	timers_reify (EV_P)	1837	timers_reify (EV_P)
1609	{	1838	{
		1839	EV_FREQUENT_CHECK;
		1840
1610	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	1841	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1611	{	1842	{
1612	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	1843	do
1613
1614	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1615
1616	/* first reschedule or stop timer */
1617	if (w->repeat)
1618	{	1844	{
		1845	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1846
		1847	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		1848
		1849	/* first reschedule or stop timer */
		1850	if (w->repeat)
		1851	{
1619	ev_at (w) += w->repeat;	1852	ev_at (w) += w->repeat;
1620	if (ev_at (w) < mn_now)	1853	if (ev_at (w) < mn_now)
1621	ev_at (w) = mn_now;	1854	ev_at (w) = mn_now;
1622		1855
1623	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1856	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1624		1857
1625	ANHE_at_set (timers [HEAP0]);	1858	ANHE_at_cache (timers [HEAP0]);
1626	downheap (timers, timercnt, HEAP0);	1859	downheap (timers, timercnt, HEAP0);
		1860	}
		1861	else
		1862	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1863
		1864	EV_FREQUENT_CHECK;
		1865	feed_reverse (EV_A_ (W)w);
1627	}	1866	}
1628	else	1867	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1629	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1630		1868
1631	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1869	feed_reverse_done (EV_A_ EV_TIMEOUT);
1632	}	1870	}
1633	}	1871	}
1634		1872
1635	#if EV_PERIODIC_ENABLE	1873	#if EV_PERIODIC_ENABLE
1636	void inline_size	1874	/* make periodics pending */
		1875	inline_size void
1637	periodics_reify (EV_P)	1876	periodics_reify (EV_P)
1638	{	1877	{
		1878	EV_FREQUENT_CHECK;
		1879
1639	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	1880	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1640	{	1881	{
1641	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	1882	int feed_count = 0;
1642		1883
1643	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	1884	do
1644
1645	/* first reschedule or stop timer */
1646	if (w->reschedule_cb)
1647	{	1885	{
		1886	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1887
		1888	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		1889
		1890	/* first reschedule or stop timer */
		1891	if (w->reschedule_cb)
		1892	{
1648	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1893	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1649		1894
1650	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));	1895	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1651		1896
1652	ANHE_at_set (periodics [HEAP0]);	1897	ANHE_at_cache (periodics [HEAP0]);
1653	downheap (periodics, periodiccnt, HEAP0);	1898	downheap (periodics, periodiccnt, HEAP0);
		1899	}
		1900	else if (w->interval)
		1901	{
		1902	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1903	/* if next trigger time is not sufficiently in the future, put it there */
		1904	/* this might happen because of floating point inexactness */
		1905	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1906	{
		1907	ev_at (w) += w->interval;
		1908
		1909	/* if interval is unreasonably low we might still have a time in the past */
		1910	/* so correct this. this will make the periodic very inexact, but the user */
		1911	/* has effectively asked to get triggered more often than possible */
		1912	if (ev_at (w) < ev_rt_now)
		1913	ev_at (w) = ev_rt_now;
		1914	}
		1915
		1916	ANHE_at_cache (periodics [HEAP0]);
		1917	downheap (periodics, periodiccnt, HEAP0);
		1918	}
		1919	else
		1920	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1921
		1922	EV_FREQUENT_CHECK;
		1923	feed_reverse (EV_A_ (W)w);
1654	}	1924	}
1655	else if (w->interval)	1925	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1656	{
1657	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1658	/* if next trigger time is not sufficiently in the future, put it there */
1659	/* this might happen because of floating point inexactness */
1660	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1661	{
1662	ev_at (w) += w->interval;
1663		1926
1664	/* if interval is unreasonably low we might still have a time in the past */
1665	/* so correct this. this will make the periodic very inexact, but the user */
1666	/* has effectively asked to get triggered more often than possible */
1667	if (ev_at (w) < ev_rt_now)
1668	ev_at (w) = ev_rt_now;
1669	}
1670
1671	ANHE_at_set (periodics [HEAP0]);
1672	downheap (periodics, periodiccnt, HEAP0);
1673	}
1674	else
1675	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1676
1677	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1927	feed_reverse_done (EV_A_ EV_PERIODIC);
1678	}	1928	}
1679	}	1929	}
1680		1930
		1931	/* simply recalculate all periodics */
		1932	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1681	static void noinline	1933	static void noinline
1682	periodics_reschedule (EV_P)	1934	periodics_reschedule (EV_P)
1683	{	1935	{
1684	int i;	1936	int i;
1685		1937
…		…
1691	if (w->reschedule_cb)	1943	if (w->reschedule_cb)
1692	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1944	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1693	else if (w->interval)	1945	else if (w->interval)
1694	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	1946	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1695		1947
1696	ANHE_at_set (periodics [i]);	1948	ANHE_at_cache (periodics [i]);
1697	}	1949	}
1698		1950
1699	/* we don't use floyds algorithm, uphead is simpler and is more cache-efficient */	1951	reheap (periodics, periodiccnt);
1700	/* also, this is easy and corretc for both 2-heaps and 4-heaps */	1952	}
		1953	#endif
		1954
		1955	/* adjust all timers by a given offset */
		1956	static void noinline
		1957	timers_reschedule (EV_P_ ev_tstamp adjust)
		1958	{
		1959	int i;
		1960
1701	for (i = 0; i < periodiccnt; ++i)	1961	for (i = 0; i < timercnt; ++i)
1702	upheap (periodics, i + HEAP0);	1962	{
		1963	ANHE *he = timers + i + HEAP0;
		1964	ANHE_w (*he)->at += adjust;
		1965	ANHE_at_cache (*he);
		1966	}
1703	}	1967	}
1704	#endif
1705		1968
1706	void inline_speed	1969	/* fetch new monotonic and realtime times from the kernel */
		1970	/* also detetc if there was a timejump, and act accordingly */
		1971	inline_speed void
1707	time_update (EV_P_ ev_tstamp max_block)	1972	time_update (EV_P_ ev_tstamp max_block)
1708	{	1973	{
1709	int i;
1710
1711	#if EV_USE_MONOTONIC	1974	#if EV_USE_MONOTONIC
1712	if (expect_true (have_monotonic))	1975	if (expect_true (have_monotonic))
1713	{	1976	{
		1977	int i;
1714	ev_tstamp odiff = rtmn_diff;	1978	ev_tstamp odiff = rtmn_diff;
1715		1979
1716	mn_now = get_clock ();	1980	mn_now = get_clock ();
1717		1981
1718	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	1982	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1744	ev_rt_now = ev_time ();	2008	ev_rt_now = ev_time ();
1745	mn_now = get_clock ();	2009	mn_now = get_clock ();
1746	now_floor = mn_now;	2010	now_floor = mn_now;
1747	}	2011	}
1748		2012
		2013	/* no timer adjustment, as the monotonic clock doesn't jump */
		2014	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1749	# if EV_PERIODIC_ENABLE	2015	# if EV_PERIODIC_ENABLE
1750	periodics_reschedule (EV_A);	2016	periodics_reschedule (EV_A);
1751	# endif	2017	# endif
1752	/* no timer adjustment, as the monotonic clock doesn't jump */
1753	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1754	}	2018	}
1755	else	2019	else
1756	#endif	2020	#endif
1757	{	2021	{
1758	ev_rt_now = ev_time ();	2022	ev_rt_now = ev_time ();
1759		2023
1760	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2024	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1761	{	2025	{
		2026	/* adjust timers. this is easy, as the offset is the same for all of them */
		2027	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1762	#if EV_PERIODIC_ENABLE	2028	#if EV_PERIODIC_ENABLE
1763	periodics_reschedule (EV_A);	2029	periodics_reschedule (EV_A);
1764	#endif	2030	#endif
1765	/* adjust timers. this is easy, as the offset is the same for all of them */
1766	for (i = 0; i < timercnt; ++i)
1767	{
1768	ANHE *he = timers + i + HEAP0;
1769	ANHE_w (*he)->at += ev_rt_now - mn_now;
1770	ANHE_at_set (*he);
1771	}
1772	}	2031	}
1773		2032
1774	mn_now = ev_rt_now;	2033	mn_now = ev_rt_now;
1775	}	2034	}
1776	}	2035	}
1777		2036
1778	void	2037	void
1779	ev_ref (EV_P)
1780	{
1781	++activecnt;
1782	}
1783
1784	void
1785	ev_unref (EV_P)
1786	{
1787	--activecnt;
1788	}
1789
1790	static int loop_done;
1791
1792	void
1793	ev_loop (EV_P_ int flags)	2038	ev_loop (EV_P_ int flags)
1794	{	2039	{
		2040	++loop_depth;
		2041
1795	loop_done = EVUNLOOP_CANCEL;	2042	loop_done = EVUNLOOP_CANCEL;
1796		2043
1797	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2044	invoke_cb (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1798		2045
1799	do	2046	do
1800	{	2047	{
		2048	#if EV_VERIFY >= 2
		2049	ev_loop_verify (EV_A);
		2050	#endif
		2051
1801	#ifndef _WIN32	2052	#ifndef _WIN32
1802	if (expect_false (curpid)) /* penalise the forking check even more */	2053	if (expect_false (curpid)) /* penalise the forking check even more */
1803	if (expect_false (getpid () != curpid))	2054	if (expect_false (getpid () != curpid))
1804	{	2055	{
1805	curpid = getpid ();	2056	curpid = getpid ();
…		…
1811	/* we might have forked, so queue fork handlers */	2062	/* we might have forked, so queue fork handlers */
1812	if (expect_false (postfork))	2063	if (expect_false (postfork))
1813	if (forkcnt)	2064	if (forkcnt)
1814	{	2065	{
1815	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2066	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1816	call_pending (EV_A);	2067	invoke_cb (EV_A);
1817	}	2068	}
1818	#endif	2069	#endif
1819		2070
1820	/* queue prepare watchers (and execute them) */	2071	/* queue prepare watchers (and execute them) */
1821	if (expect_false (preparecnt))	2072	if (expect_false (preparecnt))
1822	{	2073	{
1823	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2074	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1824	call_pending (EV_A);	2075	invoke_cb (EV_A);
1825	}	2076	}
1826
1827	if (expect_false (!activecnt))
1828	break;
1829		2077
1830	/* we might have forked, so reify kernel state if necessary */	2078	/* we might have forked, so reify kernel state if necessary */
1831	if (expect_false (postfork))	2079	if (expect_false (postfork))
1832	loop_fork (EV_A);	2080	loop_fork (EV_A);
1833		2081
…		…
1839	ev_tstamp waittime = 0.;	2087	ev_tstamp waittime = 0.;
1840	ev_tstamp sleeptime = 0.;	2088	ev_tstamp sleeptime = 0.;
1841		2089
1842	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2090	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1843	{	2091	{
		2092	/* remember old timestamp for io_blocktime calculation */
		2093	ev_tstamp prev_mn_now = mn_now;
		2094
1844	/* update time to cancel out callback processing overhead */	2095	/* update time to cancel out callback processing overhead */
1845	time_update (EV_A_ 1e100);	2096	time_update (EV_A_ 1e100);
1846		2097
1847	waittime = MAX_BLOCKTIME;	2098	waittime = MAX_BLOCKTIME;
1848		2099
…		…
1858	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2109	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1859	if (waittime > to) waittime = to;	2110	if (waittime > to) waittime = to;
1860	}	2111	}
1861	#endif	2112	#endif
1862		2113
		2114	/* don't let timeouts decrease the waittime below timeout_blocktime */
1863	if (expect_false (waittime < timeout_blocktime))	2115	if (expect_false (waittime < timeout_blocktime))
1864	waittime = timeout_blocktime;	2116	waittime = timeout_blocktime;
1865		2117
1866	sleeptime = waittime - backend_fudge;	2118	/* extra check because io_blocktime is commonly 0 */
1867
1868	if (expect_true (sleeptime > io_blocktime))	2119	if (expect_false (io_blocktime))
1869	sleeptime = io_blocktime;
1870
1871	if (sleeptime)
1872	{	2120	{
		2121	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2122
		2123	if (sleeptime > waittime - backend_fudge)
		2124	sleeptime = waittime - backend_fudge;
		2125
		2126	if (expect_true (sleeptime > 0.))
		2127	{
1873	ev_sleep (sleeptime);	2128	ev_sleep (sleeptime);
1874	waittime -= sleeptime;	2129	waittime -= sleeptime;
		2130	}
1875	}	2131	}
1876	}	2132	}
1877		2133
1878	++loop_count;	2134	++loop_count;
1879	backend_poll (EV_A_ waittime);	2135	backend_poll (EV_A_ waittime);
…		…
1895		2151
1896	/* queue check watchers, to be executed first */	2152	/* queue check watchers, to be executed first */
1897	if (expect_false (checkcnt))	2153	if (expect_false (checkcnt))
1898	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2154	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1899		2155
1900	call_pending (EV_A);	2156	invoke_cb (EV_A);
1901	}	2157	}
1902	while (expect_true (	2158	while (expect_true (
1903	activecnt	2159	activecnt
1904	&& !loop_done	2160	&& !loop_done
1905	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2161	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1906	));	2162	));
1907		2163
1908	if (loop_done == EVUNLOOP_ONE)	2164	if (loop_done == EVUNLOOP_ONE)
1909	loop_done = EVUNLOOP_CANCEL;	2165	loop_done = EVUNLOOP_CANCEL;
		2166
		2167	--loop_depth;
1910	}	2168	}
1911		2169
1912	void	2170	void
1913	ev_unloop (EV_P_ int how)	2171	ev_unloop (EV_P_ int how)
1914	{	2172	{
1915	loop_done = how;	2173	loop_done = how;
1916	}	2174	}
1917		2175
		2176	void
		2177	ev_ref (EV_P)
		2178	{
		2179	++activecnt;
		2180	}
		2181
		2182	void
		2183	ev_unref (EV_P)
		2184	{
		2185	--activecnt;
		2186	}
		2187
		2188	void
		2189	ev_now_update (EV_P)
		2190	{
		2191	time_update (EV_A_ 1e100);
		2192	}
		2193
		2194	void
		2195	ev_suspend (EV_P)
		2196	{
		2197	ev_now_update (EV_A);
		2198	}
		2199
		2200	void
		2201	ev_resume (EV_P)
		2202	{
		2203	ev_tstamp mn_prev = mn_now;
		2204
		2205	ev_now_update (EV_A);
		2206	timers_reschedule (EV_A_ mn_now - mn_prev);
		2207	#if EV_PERIODIC_ENABLE
		2208	/* TODO: really do this? */
		2209	periodics_reschedule (EV_A);
		2210	#endif
		2211	}
		2212
1918	/*****************************************************************************/	2213	/*****************************************************************************/
		2214	/* singly-linked list management, used when the expected list length is short */
1919		2215
1920	void inline_size	2216	inline_size void
1921	wlist_add (WL *head, WL elem)	2217	wlist_add (WL *head, WL elem)
1922	{	2218	{
1923	elem->next = *head;	2219	elem->next = *head;
1924	*head = elem;	2220	*head = elem;
1925	}	2221	}
1926		2222
1927	void inline_size	2223	inline_size void
1928	wlist_del (WL *head, WL elem)	2224	wlist_del (WL *head, WL elem)
1929	{	2225	{
1930	while (*head)	2226	while (*head)
1931	{	2227	{
1932	if (*head == elem)	2228	if (*head == elem)
…		…
1937		2233
1938	head = &(*head)->next;	2234	head = &(*head)->next;
1939	}	2235	}
1940	}	2236	}
1941		2237
1942	void inline_speed	2238	/* internal, faster, version of ev_clear_pending */
		2239	inline_speed void
1943	clear_pending (EV_P_ W w)	2240	clear_pending (EV_P_ W w)
1944	{	2241	{
1945	if (w->pending)	2242	if (w->pending)
1946	{	2243	{
1947	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2244	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1948	w->pending = 0;	2245	w->pending = 0;
1949	}	2246	}
1950	}	2247	}
1951		2248
1952	int	2249	int
…		…
1956	int pending = w_->pending;	2253	int pending = w_->pending;
1957		2254
1958	if (expect_true (pending))	2255	if (expect_true (pending))
1959	{	2256	{
1960	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2257	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2258	p->w = (W)&pending_w;
1961	w_->pending = 0;	2259	w_->pending = 0;
1962	p->w = 0;
1963	return p->events;	2260	return p->events;
1964	}	2261	}
1965	else	2262	else
1966	return 0;	2263	return 0;
1967	}	2264	}
1968		2265
1969	void inline_size	2266	inline_size void
1970	pri_adjust (EV_P_ W w)	2267	pri_adjust (EV_P_ W w)
1971	{	2268	{
1972	int pri = w->priority;	2269	int pri = ev_priority (w);
1973	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2270	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1974	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2271	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1975	w->priority = pri;	2272	ev_set_priority (w, pri);
1976	}	2273	}
1977		2274
1978	void inline_speed	2275	inline_speed void
1979	ev_start (EV_P_ W w, int active)	2276	ev_start (EV_P_ W w, int active)
1980	{	2277	{
1981	pri_adjust (EV_A_ w);	2278	pri_adjust (EV_A_ w);
1982	w->active = active;	2279	w->active = active;
1983	ev_ref (EV_A);	2280	ev_ref (EV_A);
1984	}	2281	}
1985		2282
1986	void inline_size	2283	inline_size void
1987	ev_stop (EV_P_ W w)	2284	ev_stop (EV_P_ W w)
1988	{	2285	{
1989	ev_unref (EV_A);	2286	ev_unref (EV_A);
1990	w->active = 0;	2287	w->active = 0;
1991	}	2288	}
…		…
1998	int fd = w->fd;	2295	int fd = w->fd;
1999		2296
2000	if (expect_false (ev_is_active (w)))	2297	if (expect_false (ev_is_active (w)))
2001	return;	2298	return;
2002		2299
2003	assert (("ev_io_start called with negative fd", fd >= 0));	2300	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2301	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
		2302
		2303	EV_FREQUENT_CHECK;
2004		2304
2005	ev_start (EV_A_ (W)w, 1);	2305	ev_start (EV_A_ (W)w, 1);
2006	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2306	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2007	wlist_add (&anfds[fd].head, (WL)w);	2307	wlist_add (&anfds[fd].head, (WL)w);
2008		2308
2009	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2309	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
2010	w->events &= ~EV_IOFDSET;	2310	w->events &= ~EV__IOFDSET;
		2311
		2312	EV_FREQUENT_CHECK;
2011	}	2313	}
2012		2314
2013	void noinline	2315	void noinline
2014	ev_io_stop (EV_P_ ev_io *w)	2316	ev_io_stop (EV_P_ ev_io *w)
2015	{	2317	{
2016	clear_pending (EV_A_ (W)w);	2318	clear_pending (EV_A_ (W)w);
2017	if (expect_false (!ev_is_active (w)))	2319	if (expect_false (!ev_is_active (w)))
2018	return;	2320	return;
2019		2321
2020	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2322	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		2323
		2324	EV_FREQUENT_CHECK;
2021		2325
2022	wlist_del (&anfds[w->fd].head, (WL)w);	2326	wlist_del (&anfds[w->fd].head, (WL)w);
2023	ev_stop (EV_A_ (W)w);	2327	ev_stop (EV_A_ (W)w);
2024		2328
2025	fd_change (EV_A_ w->fd, 1);	2329	fd_change (EV_A_ w->fd, 1);
		2330
		2331	EV_FREQUENT_CHECK;
2026	}	2332	}
2027		2333
2028	void noinline	2334	void noinline
2029	ev_timer_start (EV_P_ ev_timer *w)	2335	ev_timer_start (EV_P_ ev_timer *w)
2030	{	2336	{
2031	if (expect_false (ev_is_active (w)))	2337	if (expect_false (ev_is_active (w)))
2032	return;	2338	return;
2033		2339
2034	ev_at (w) += mn_now;	2340	ev_at (w) += mn_now;
2035		2341
2036	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2342	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2037		2343
		2344	EV_FREQUENT_CHECK;
		2345
		2346	++timercnt;
2038	ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1);	2347	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2039	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);	2348	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
2040	ANHE_w (timers [ev_active (w)]) = (WT)w;	2349	ANHE_w (timers [ev_active (w)]) = (WT)w;
2041	ANHE_at_set (timers [ev_active (w)]);	2350	ANHE_at_cache (timers [ev_active (w)]);
2042	upheap (timers, ev_active (w));	2351	upheap (timers, ev_active (w));
2043		2352
		2353	EV_FREQUENT_CHECK;
		2354
2044	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2355	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2045	}	2356	}
2046		2357
2047	void noinline	2358	void noinline
2048	ev_timer_stop (EV_P_ ev_timer *w)	2359	ev_timer_stop (EV_P_ ev_timer *w)
2049	{	2360	{
2050	clear_pending (EV_A_ (W)w);	2361	clear_pending (EV_A_ (W)w);
2051	if (expect_false (!ev_is_active (w)))	2362	if (expect_false (!ev_is_active (w)))
2052	return;	2363	return;
2053		2364
		2365	EV_FREQUENT_CHECK;
		2366
2054	{	2367	{
2055	int active = ev_active (w);	2368	int active = ev_active (w);
2056		2369
2057	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2370	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2058		2371
		2372	--timercnt;
		2373
2059	if (expect_true (active < timercnt + HEAP0 - 1))	2374	if (expect_true (active < timercnt + HEAP0))
2060	{	2375	{
2061	timers [active] = timers [timercnt + HEAP0 - 1];	2376	timers [active] = timers [timercnt + HEAP0];
2062	adjustheap (timers, timercnt, active);	2377	adjustheap (timers, timercnt, active);
2063	}	2378	}
2064
2065	--timercnt;
2066	}	2379	}
		2380
		2381	EV_FREQUENT_CHECK;
2067		2382
2068	ev_at (w) -= mn_now;	2383	ev_at (w) -= mn_now;
2069		2384
2070	ev_stop (EV_A_ (W)w);	2385	ev_stop (EV_A_ (W)w);
2071	}	2386	}
2072		2387
2073	void noinline	2388	void noinline
2074	ev_timer_again (EV_P_ ev_timer *w)	2389	ev_timer_again (EV_P_ ev_timer *w)
2075	{	2390	{
		2391	EV_FREQUENT_CHECK;
		2392
2076	if (ev_is_active (w))	2393	if (ev_is_active (w))
2077	{	2394	{
2078	if (w->repeat)	2395	if (w->repeat)
2079	{	2396	{
2080	ev_at (w) = mn_now + w->repeat;	2397	ev_at (w) = mn_now + w->repeat;
2081	ANHE_at_set (timers [ev_active (w)]);	2398	ANHE_at_cache (timers [ev_active (w)]);
2082	adjustheap (timers, timercnt, ev_active (w));	2399	adjustheap (timers, timercnt, ev_active (w));
2083	}	2400	}
2084	else	2401	else
2085	ev_timer_stop (EV_A_ w);	2402	ev_timer_stop (EV_A_ w);
2086	}	2403	}
2087	else if (w->repeat)	2404	else if (w->repeat)
2088	{	2405	{
2089	ev_at (w) = w->repeat;	2406	ev_at (w) = w->repeat;
2090	ev_timer_start (EV_A_ w);	2407	ev_timer_start (EV_A_ w);
2091	}	2408	}
		2409
		2410	EV_FREQUENT_CHECK;
2092	}	2411	}
2093		2412
2094	#if EV_PERIODIC_ENABLE	2413	#if EV_PERIODIC_ENABLE
2095	void noinline	2414	void noinline
2096	ev_periodic_start (EV_P_ ev_periodic *w)	2415	ev_periodic_start (EV_P_ ev_periodic *w)
…		…
2100		2419
2101	if (w->reschedule_cb)	2420	if (w->reschedule_cb)
2102	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2421	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2103	else if (w->interval)	2422	else if (w->interval)
2104	{	2423	{
2105	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2424	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2106	/* this formula differs from the one in periodic_reify because we do not always round up */	2425	/* this formula differs from the one in periodic_reify because we do not always round up */
2107	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2426	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2108	}	2427	}
2109	else	2428	else
2110	ev_at (w) = w->offset;	2429	ev_at (w) = w->offset;
2111		2430
		2431	EV_FREQUENT_CHECK;
		2432
		2433	++periodiccnt;
2112	ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1);	2434	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2113	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);	2435	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2114	ANHE_w (periodics [ev_active (w)]) = (WT)w;	2436	ANHE_w (periodics [ev_active (w)]) = (WT)w;
2115	ANHE_at_set (periodics [ev_active (w)]);	2437	ANHE_at_cache (periodics [ev_active (w)]);
2116	upheap (periodics, ev_active (w));	2438	upheap (periodics, ev_active (w));
2117		2439
		2440	EV_FREQUENT_CHECK;
		2441
2118	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2442	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2119	}	2443	}
2120		2444
2121	void noinline	2445	void noinline
2122	ev_periodic_stop (EV_P_ ev_periodic *w)	2446	ev_periodic_stop (EV_P_ ev_periodic *w)
2123	{	2447	{
2124	clear_pending (EV_A_ (W)w);	2448	clear_pending (EV_A_ (W)w);
2125	if (expect_false (!ev_is_active (w)))	2449	if (expect_false (!ev_is_active (w)))
2126	return;	2450	return;
2127		2451
		2452	EV_FREQUENT_CHECK;
		2453
2128	{	2454	{
2129	int active = ev_active (w);	2455	int active = ev_active (w);
2130		2456
2131	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2457	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2132		2458
		2459	--periodiccnt;
		2460
2133	if (expect_true (active < periodiccnt + HEAP0 - 1))	2461	if (expect_true (active < periodiccnt + HEAP0))
2134	{	2462	{
2135	periodics [active] = periodics [periodiccnt + HEAP0 - 1];	2463	periodics [active] = periodics [periodiccnt + HEAP0];
2136	adjustheap (periodics, periodiccnt, active);	2464	adjustheap (periodics, periodiccnt, active);
2137	}	2465	}
2138
2139	--periodiccnt;
2140	}	2466	}
		2467
		2468	EV_FREQUENT_CHECK;
2141		2469
2142	ev_stop (EV_A_ (W)w);	2470	ev_stop (EV_A_ (W)w);
2143	}	2471	}
2144		2472
2145	void noinline	2473	void noinline
…		…
2157		2485
2158	void noinline	2486	void noinline
2159	ev_signal_start (EV_P_ ev_signal *w)	2487	ev_signal_start (EV_P_ ev_signal *w)
2160	{	2488	{
2161	#if EV_MULTIPLICITY	2489	#if EV_MULTIPLICITY
2162	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2490	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2163	#endif	2491	#endif
2164	if (expect_false (ev_is_active (w)))	2492	if (expect_false (ev_is_active (w)))
2165	return;	2493	return;
2166		2494
2167	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2495	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2168		2496
2169	evpipe_init (EV_A);	2497	evpipe_init (EV_A);
		2498
		2499	EV_FREQUENT_CHECK;
2170		2500
2171	{	2501	{
2172	#ifndef _WIN32	2502	#ifndef _WIN32
2173	sigset_t full, prev;	2503	sigset_t full, prev;
2174	sigfillset (&full);	2504	sigfillset (&full);
2175	sigprocmask (SIG_SETMASK, &full, &prev);	2505	sigprocmask (SIG_SETMASK, &full, &prev);
2176	#endif	2506	#endif
2177		2507
2178	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2508	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2179		2509
2180	#ifndef _WIN32	2510	#ifndef _WIN32
2181	sigprocmask (SIG_SETMASK, &prev, 0);	2511	sigprocmask (SIG_SETMASK, &prev, 0);
2182	#endif	2512	#endif
2183	}	2513	}
…		…
2195	sigfillset (&sa.sa_mask);	2525	sigfillset (&sa.sa_mask);
2196	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2526	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2197	sigaction (w->signum, &sa, 0);	2527	sigaction (w->signum, &sa, 0);
2198	#endif	2528	#endif
2199	}	2529	}
		2530
		2531	EV_FREQUENT_CHECK;
2200	}	2532	}
2201		2533
2202	void noinline	2534	void noinline
2203	ev_signal_stop (EV_P_ ev_signal *w)	2535	ev_signal_stop (EV_P_ ev_signal *w)
2204	{	2536	{
2205	clear_pending (EV_A_ (W)w);	2537	clear_pending (EV_A_ (W)w);
2206	if (expect_false (!ev_is_active (w)))	2538	if (expect_false (!ev_is_active (w)))
2207	return;	2539	return;
2208		2540
		2541	EV_FREQUENT_CHECK;
		2542
2209	wlist_del (&signals [w->signum - 1].head, (WL)w);	2543	wlist_del (&signals [w->signum - 1].head, (WL)w);
2210	ev_stop (EV_A_ (W)w);	2544	ev_stop (EV_A_ (W)w);
2211		2545
2212	if (!signals [w->signum - 1].head)	2546	if (!signals [w->signum - 1].head)
2213	signal (w->signum, SIG_DFL);	2547	signal (w->signum, SIG_DFL);
		2548
		2549	EV_FREQUENT_CHECK;
2214	}	2550	}
2215		2551
2216	void	2552	void
2217	ev_child_start (EV_P_ ev_child *w)	2553	ev_child_start (EV_P_ ev_child *w)
2218	{	2554	{
2219	#if EV_MULTIPLICITY	2555	#if EV_MULTIPLICITY
2220	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2556	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2221	#endif	2557	#endif
2222	if (expect_false (ev_is_active (w)))	2558	if (expect_false (ev_is_active (w)))
2223	return;	2559	return;
2224		2560
		2561	EV_FREQUENT_CHECK;
		2562
2225	ev_start (EV_A_ (W)w, 1);	2563	ev_start (EV_A_ (W)w, 1);
2226	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2564	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2565
		2566	EV_FREQUENT_CHECK;
2227	}	2567	}
2228		2568
2229	void	2569	void
2230	ev_child_stop (EV_P_ ev_child *w)	2570	ev_child_stop (EV_P_ ev_child *w)
2231	{	2571	{
2232	clear_pending (EV_A_ (W)w);	2572	clear_pending (EV_A_ (W)w);
2233	if (expect_false (!ev_is_active (w)))	2573	if (expect_false (!ev_is_active (w)))
2234	return;	2574	return;
2235		2575
		2576	EV_FREQUENT_CHECK;
		2577
2236	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2578	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2237	ev_stop (EV_A_ (W)w);	2579	ev_stop (EV_A_ (W)w);
		2580
		2581	EV_FREQUENT_CHECK;
2238	}	2582	}
2239		2583
2240	#if EV_STAT_ENABLE	2584	#if EV_STAT_ENABLE
2241		2585
2242	# ifdef _WIN32	2586	# ifdef _WIN32
2243	# undef lstat	2587	# undef lstat
2244	# define lstat(a,b) _stati64 (a,b)	2588	# define lstat(a,b) _stati64 (a,b)
2245	# endif	2589	# endif
2246		2590
2247	#define DEF_STAT_INTERVAL 5.0074891	2591	#define DEF_STAT_INTERVAL 5.0074891
		2592	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2248	#define MIN_STAT_INTERVAL 0.1074891	2593	#define MIN_STAT_INTERVAL 0.1074891
2249		2594
2250	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2595	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2251		2596
2252	#if EV_USE_INOTIFY	2597	#if EV_USE_INOTIFY
2253	# define EV_INOTIFY_BUFSIZE 8192	2598	# define EV_INOTIFY_BUFSIZE 8192
…		…
2257	{	2602	{
2258	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);	2603	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2259		2604
2260	if (w->wd < 0)	2605	if (w->wd < 0)
2261	{	2606	{
		2607	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2262	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2608	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2263		2609
2264	/* monitor some parent directory for speedup hints */	2610	/* monitor some parent directory for speedup hints */
2265	/* note that exceeding the hardcoded limit is not a correctness issue, */	2611	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2266	/* but an efficiency issue only */	2612	/* but an efficiency issue only */
2267	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2613	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2268	{	2614	{
2269	char path [4096];	2615	char path [4096];
2270	strcpy (path, w->path);	2616	strcpy (path, w->path);
…		…
2274	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2620	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2275	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2621	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2276		2622
2277	char *pend = strrchr (path, '/');	2623	char *pend = strrchr (path, '/');
2278		2624
2279	if (!pend)	2625	if (!pend || pend == path)
2280	break; /* whoops, no '/', complain to your admin */	2626	break;
2281		2627
2282	*pend = 0;	2628	*pend = 0;
2283	w->wd = inotify_add_watch (fs_fd, path, mask);	2629	w->wd = inotify_add_watch (fs_fd, path, mask);
2284	}	2630	}
2285	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2631	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2286	}	2632	}
2287	}	2633	}
2288	else
2289	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2290		2634
2291	if (w->wd >= 0)	2635	if (w->wd >= 0)
		2636	{
2292	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2637	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2638
		2639	/* now local changes will be tracked by inotify, but remote changes won't */
		2640	/* unless the filesystem it known to be local, we therefore still poll */
		2641	/* also do poll on <2.6.25, but with normal frequency */
		2642	struct statfs sfs;
		2643
		2644	if (fs_2625 && !statfs (w->path, &sfs))
		2645	if (sfs.f_type == 0x1373 /* devfs */
		2646	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2647	|| sfs.f_type == 0x3153464a /* jfs */
		2648	|| sfs.f_type == 0x52654973 /* reiser3 */
		2649	|| sfs.f_type == 0x01021994 /* tempfs */
		2650	|| sfs.f_type == 0x58465342 /* xfs */)
		2651	return;
		2652
		2653	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2654	ev_timer_again (EV_A_ &w->timer);
		2655	}
2293	}	2656	}
2294		2657
2295	static void noinline	2658	static void noinline
2296	infy_del (EV_P_ ev_stat *w)	2659	infy_del (EV_P_ ev_stat *w)
2297	{	2660	{
…		…
2311		2674
2312	static void noinline	2675	static void noinline
2313	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2676	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2314	{	2677	{
2315	if (slot < 0)	2678	if (slot < 0)
2316	/* overflow, need to check for all hahs slots */	2679	/* overflow, need to check for all hash slots */
2317	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2680	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2318	infy_wd (EV_A_ slot, wd, ev);	2681	infy_wd (EV_A_ slot, wd, ev);
2319	else	2682	else
2320	{	2683	{
2321	WL w_;	2684	WL w_;
…		…
2327		2690
2328	if (w->wd == wd || wd == -1)	2691	if (w->wd == wd || wd == -1)
2329	{	2692	{
2330	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2693	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2331	{	2694	{
		2695	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2332	w->wd = -1;	2696	w->wd = -1;
2333	infy_add (EV_A_ w); /* re-add, no matter what */	2697	infy_add (EV_A_ w); /* re-add, no matter what */
2334	}	2698	}
2335		2699
2336	stat_timer_cb (EV_A_ &w->timer, 0);	2700	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2349		2713
2350	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2714	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2351	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2715	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2352	}	2716	}
2353		2717
2354	void inline_size	2718	inline_size void
		2719	check_2625 (EV_P)
		2720	{
		2721	/* kernels < 2.6.25 are borked
		2722	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2723	*/
		2724	struct utsname buf;
		2725	int major, minor, micro;
		2726
		2727	if (uname (&buf))
		2728	return;
		2729
		2730	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2731	return;
		2732
		2733	if (major < 2
		2734	|| (major == 2 && minor < 6)
		2735	|| (major == 2 && minor == 6 && micro < 25))
		2736	return;
		2737
		2738	fs_2625 = 1;
		2739	}
		2740
		2741	inline_size void
2355	infy_init (EV_P)	2742	infy_init (EV_P)
2356	{	2743	{
2357	if (fs_fd != -2)	2744	if (fs_fd != -2)
2358	return;	2745	return;
		2746
		2747	fs_fd = -1;
		2748
		2749	check_2625 (EV_A);
2359		2750
2360	fs_fd = inotify_init ();	2751	fs_fd = inotify_init ();
2361		2752
2362	if (fs_fd >= 0)	2753	if (fs_fd >= 0)
2363	{	2754	{
…		…
2365	ev_set_priority (&fs_w, EV_MAXPRI);	2756	ev_set_priority (&fs_w, EV_MAXPRI);
2366	ev_io_start (EV_A_ &fs_w);	2757	ev_io_start (EV_A_ &fs_w);
2367	}	2758	}
2368	}	2759	}
2369		2760
2370	void inline_size	2761	inline_size void
2371	infy_fork (EV_P)	2762	infy_fork (EV_P)
2372	{	2763	{
2373	int slot;	2764	int slot;
2374		2765
2375	if (fs_fd < 0)	2766	if (fs_fd < 0)
…		…
2391	w->wd = -1;	2782	w->wd = -1;
2392		2783
2393	if (fs_fd >= 0)	2784	if (fs_fd >= 0)
2394	infy_add (EV_A_ w); /* re-add, no matter what */	2785	infy_add (EV_A_ w); /* re-add, no matter what */
2395	else	2786	else
2396	ev_timer_start (EV_A_ &w->timer);	2787	ev_timer_again (EV_A_ &w->timer);
2397	}	2788	}
2398
2399	}	2789	}
2400	}	2790	}
2401		2791
		2792	#endif
		2793
		2794	#ifdef _WIN32
		2795	# define EV_LSTAT(p,b) _stati64 (p, b)
		2796	#else
		2797	# define EV_LSTAT(p,b) lstat (p, b)
2402	#endif	2798	#endif
2403		2799
2404	void	2800	void
2405	ev_stat_stat (EV_P_ ev_stat *w)	2801	ev_stat_stat (EV_P_ ev_stat *w)
2406	{	2802	{
…		…
2433	|| w->prev.st_atime != w->attr.st_atime	2829	|| w->prev.st_atime != w->attr.st_atime
2434	|| w->prev.st_mtime != w->attr.st_mtime	2830	|| w->prev.st_mtime != w->attr.st_mtime
2435	|| w->prev.st_ctime != w->attr.st_ctime	2831	|| w->prev.st_ctime != w->attr.st_ctime
2436	) {	2832	) {
2437	#if EV_USE_INOTIFY	2833	#if EV_USE_INOTIFY
		2834	if (fs_fd >= 0)
		2835	{
2438	infy_del (EV_A_ w);	2836	infy_del (EV_A_ w);
2439	infy_add (EV_A_ w);	2837	infy_add (EV_A_ w);
2440	ev_stat_stat (EV_A_ w); /* avoid race... */	2838	ev_stat_stat (EV_A_ w); /* avoid race... */
		2839	}
2441	#endif	2840	#endif
2442		2841
2443	ev_feed_event (EV_A_ w, EV_STAT);	2842	ev_feed_event (EV_A_ w, EV_STAT);
2444	}	2843	}
2445	}	2844	}
…		…
2448	ev_stat_start (EV_P_ ev_stat *w)	2847	ev_stat_start (EV_P_ ev_stat *w)
2449	{	2848	{
2450	if (expect_false (ev_is_active (w)))	2849	if (expect_false (ev_is_active (w)))
2451	return;	2850	return;
2452		2851
2453	/* since we use memcmp, we need to clear any padding data etc. */
2454	memset (&w->prev, 0, sizeof (ev_statdata));
2455	memset (&w->attr, 0, sizeof (ev_statdata));
2456
2457	ev_stat_stat (EV_A_ w);	2852	ev_stat_stat (EV_A_ w);
2458		2853
		2854	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2459	if (w->interval < MIN_STAT_INTERVAL)	2855	w->interval = MIN_STAT_INTERVAL;
2460	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2461		2856
2462	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2857	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2463	ev_set_priority (&w->timer, ev_priority (w));	2858	ev_set_priority (&w->timer, ev_priority (w));
2464		2859
2465	#if EV_USE_INOTIFY	2860	#if EV_USE_INOTIFY
2466	infy_init (EV_A);	2861	infy_init (EV_A);
2467		2862
2468	if (fs_fd >= 0)	2863	if (fs_fd >= 0)
2469	infy_add (EV_A_ w);	2864	infy_add (EV_A_ w);
2470	else	2865	else
2471	#endif	2866	#endif
2472	ev_timer_start (EV_A_ &w->timer);	2867	ev_timer_again (EV_A_ &w->timer);
2473		2868
2474	ev_start (EV_A_ (W)w, 1);	2869	ev_start (EV_A_ (W)w, 1);
		2870
		2871	EV_FREQUENT_CHECK;
2475	}	2872	}
2476		2873
2477	void	2874	void
2478	ev_stat_stop (EV_P_ ev_stat *w)	2875	ev_stat_stop (EV_P_ ev_stat *w)
2479	{	2876	{
2480	clear_pending (EV_A_ (W)w);	2877	clear_pending (EV_A_ (W)w);
2481	if (expect_false (!ev_is_active (w)))	2878	if (expect_false (!ev_is_active (w)))
2482	return;	2879	return;
2483		2880
		2881	EV_FREQUENT_CHECK;
		2882
2484	#if EV_USE_INOTIFY	2883	#if EV_USE_INOTIFY
2485	infy_del (EV_A_ w);	2884	infy_del (EV_A_ w);
2486	#endif	2885	#endif
2487	ev_timer_stop (EV_A_ &w->timer);	2886	ev_timer_stop (EV_A_ &w->timer);
2488		2887
2489	ev_stop (EV_A_ (W)w);	2888	ev_stop (EV_A_ (W)w);
		2889
		2890	EV_FREQUENT_CHECK;
2490	}	2891	}
2491	#endif	2892	#endif
2492		2893
2493	#if EV_IDLE_ENABLE	2894	#if EV_IDLE_ENABLE
2494	void	2895	void
…		…
2496	{	2897	{
2497	if (expect_false (ev_is_active (w)))	2898	if (expect_false (ev_is_active (w)))
2498	return;	2899	return;
2499		2900
2500	pri_adjust (EV_A_ (W)w);	2901	pri_adjust (EV_A_ (W)w);
		2902
		2903	EV_FREQUENT_CHECK;
2501		2904
2502	{	2905	{
2503	int active = ++idlecnt [ABSPRI (w)];	2906	int active = ++idlecnt [ABSPRI (w)];
2504		2907
2505	++idleall;	2908	++idleall;
2506	ev_start (EV_A_ (W)w, active);	2909	ev_start (EV_A_ (W)w, active);
2507		2910
2508	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	2911	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2509	idles [ABSPRI (w)][active - 1] = w;	2912	idles [ABSPRI (w)][active - 1] = w;
2510	}	2913	}
		2914
		2915	EV_FREQUENT_CHECK;
2511	}	2916	}
2512		2917
2513	void	2918	void
2514	ev_idle_stop (EV_P_ ev_idle *w)	2919	ev_idle_stop (EV_P_ ev_idle *w)
2515	{	2920	{
2516	clear_pending (EV_A_ (W)w);	2921	clear_pending (EV_A_ (W)w);
2517	if (expect_false (!ev_is_active (w)))	2922	if (expect_false (!ev_is_active (w)))
2518	return;	2923	return;
2519		2924
		2925	EV_FREQUENT_CHECK;
		2926
2520	{	2927	{
2521	int active = ev_active (w);	2928	int active = ev_active (w);
2522		2929
2523	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	2930	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2524	ev_active (idles [ABSPRI (w)][active - 1]) = active;	2931	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2525		2932
2526	ev_stop (EV_A_ (W)w);	2933	ev_stop (EV_A_ (W)w);
2527	--idleall;	2934	--idleall;
2528	}	2935	}
		2936
		2937	EV_FREQUENT_CHECK;
2529	}	2938	}
2530	#endif	2939	#endif
2531		2940
2532	void	2941	void
2533	ev_prepare_start (EV_P_ ev_prepare *w)	2942	ev_prepare_start (EV_P_ ev_prepare *w)
2534	{	2943	{
2535	if (expect_false (ev_is_active (w)))	2944	if (expect_false (ev_is_active (w)))
2536	return;	2945	return;
		2946
		2947	EV_FREQUENT_CHECK;
2537		2948
2538	ev_start (EV_A_ (W)w, ++preparecnt);	2949	ev_start (EV_A_ (W)w, ++preparecnt);
2539	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	2950	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2540	prepares [preparecnt - 1] = w;	2951	prepares [preparecnt - 1] = w;
		2952
		2953	EV_FREQUENT_CHECK;
2541	}	2954	}
2542		2955
2543	void	2956	void
2544	ev_prepare_stop (EV_P_ ev_prepare *w)	2957	ev_prepare_stop (EV_P_ ev_prepare *w)
2545	{	2958	{
2546	clear_pending (EV_A_ (W)w);	2959	clear_pending (EV_A_ (W)w);
2547	if (expect_false (!ev_is_active (w)))	2960	if (expect_false (!ev_is_active (w)))
2548	return;	2961	return;
2549		2962
		2963	EV_FREQUENT_CHECK;
		2964
2550	{	2965	{
2551	int active = ev_active (w);	2966	int active = ev_active (w);
2552		2967
2553	prepares [active - 1] = prepares [--preparecnt];	2968	prepares [active - 1] = prepares [--preparecnt];
2554	ev_active (prepares [active - 1]) = active;	2969	ev_active (prepares [active - 1]) = active;
2555	}	2970	}
2556		2971
2557	ev_stop (EV_A_ (W)w);	2972	ev_stop (EV_A_ (W)w);
		2973
		2974	EV_FREQUENT_CHECK;
2558	}	2975	}
2559		2976
2560	void	2977	void
2561	ev_check_start (EV_P_ ev_check *w)	2978	ev_check_start (EV_P_ ev_check *w)
2562	{	2979	{
2563	if (expect_false (ev_is_active (w)))	2980	if (expect_false (ev_is_active (w)))
2564	return;	2981	return;
		2982
		2983	EV_FREQUENT_CHECK;
2565		2984
2566	ev_start (EV_A_ (W)w, ++checkcnt);	2985	ev_start (EV_A_ (W)w, ++checkcnt);
2567	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	2986	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2568	checks [checkcnt - 1] = w;	2987	checks [checkcnt - 1] = w;
		2988
		2989	EV_FREQUENT_CHECK;
2569	}	2990	}
2570		2991
2571	void	2992	void
2572	ev_check_stop (EV_P_ ev_check *w)	2993	ev_check_stop (EV_P_ ev_check *w)
2573	{	2994	{
2574	clear_pending (EV_A_ (W)w);	2995	clear_pending (EV_A_ (W)w);
2575	if (expect_false (!ev_is_active (w)))	2996	if (expect_false (!ev_is_active (w)))
2576	return;	2997	return;
2577		2998
		2999	EV_FREQUENT_CHECK;
		3000
2578	{	3001	{
2579	int active = ev_active (w);	3002	int active = ev_active (w);
2580		3003
2581	checks [active - 1] = checks [--checkcnt];	3004	checks [active - 1] = checks [--checkcnt];
2582	ev_active (checks [active - 1]) = active;	3005	ev_active (checks [active - 1]) = active;
2583	}	3006	}
2584		3007
2585	ev_stop (EV_A_ (W)w);	3008	ev_stop (EV_A_ (W)w);
		3009
		3010	EV_FREQUENT_CHECK;
2586	}	3011	}
2587		3012
2588	#if EV_EMBED_ENABLE	3013	#if EV_EMBED_ENABLE
2589	void noinline	3014	void noinline
2590	ev_embed_sweep (EV_P_ ev_embed *w)	3015	ev_embed_sweep (EV_P_ ev_embed *w)
…		…
2617	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3042	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2618	}	3043	}
2619	}	3044	}
2620	}	3045	}
2621		3046
		3047	static void
		3048	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3049	{
		3050	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3051
		3052	ev_embed_stop (EV_A_ w);
		3053
		3054	{
		3055	struct ev_loop *loop = w->other;
		3056
		3057	ev_loop_fork (EV_A);
		3058	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3059	}
		3060
		3061	ev_embed_start (EV_A_ w);
		3062	}
		3063
2622	#if 0	3064	#if 0
2623	static void	3065	static void
2624	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3066	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2625	{	3067	{
2626	ev_idle_stop (EV_A_ idle);	3068	ev_idle_stop (EV_A_ idle);
…		…
2633	if (expect_false (ev_is_active (w)))	3075	if (expect_false (ev_is_active (w)))
2634	return;	3076	return;
2635		3077
2636	{	3078	{
2637	struct ev_loop *loop = w->other;	3079	struct ev_loop *loop = w->other;
2638	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3080	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2639	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3081	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2640	}	3082	}
		3083
		3084	EV_FREQUENT_CHECK;
2641		3085
2642	ev_set_priority (&w->io, ev_priority (w));	3086	ev_set_priority (&w->io, ev_priority (w));
2643	ev_io_start (EV_A_ &w->io);	3087	ev_io_start (EV_A_ &w->io);
2644		3088
2645	ev_prepare_init (&w->prepare, embed_prepare_cb);	3089	ev_prepare_init (&w->prepare, embed_prepare_cb);
2646	ev_set_priority (&w->prepare, EV_MINPRI);	3090	ev_set_priority (&w->prepare, EV_MINPRI);
2647	ev_prepare_start (EV_A_ &w->prepare);	3091	ev_prepare_start (EV_A_ &w->prepare);
2648		3092
		3093	ev_fork_init (&w->fork, embed_fork_cb);
		3094	ev_fork_start (EV_A_ &w->fork);
		3095
2649	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3096	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2650		3097
2651	ev_start (EV_A_ (W)w, 1);	3098	ev_start (EV_A_ (W)w, 1);
		3099
		3100	EV_FREQUENT_CHECK;
2652	}	3101	}
2653		3102
2654	void	3103	void
2655	ev_embed_stop (EV_P_ ev_embed *w)	3104	ev_embed_stop (EV_P_ ev_embed *w)
2656	{	3105	{
2657	clear_pending (EV_A_ (W)w);	3106	clear_pending (EV_A_ (W)w);
2658	if (expect_false (!ev_is_active (w)))	3107	if (expect_false (!ev_is_active (w)))
2659	return;	3108	return;
2660		3109
		3110	EV_FREQUENT_CHECK;
		3111
2661	ev_io_stop (EV_A_ &w->io);	3112	ev_io_stop (EV_A_ &w->io);
2662	ev_prepare_stop (EV_A_ &w->prepare);	3113	ev_prepare_stop (EV_A_ &w->prepare);
		3114	ev_fork_stop (EV_A_ &w->fork);
2663		3115
2664	ev_stop (EV_A_ (W)w);	3116	EV_FREQUENT_CHECK;
2665	}	3117	}
2666	#endif	3118	#endif
2667		3119
2668	#if EV_FORK_ENABLE	3120	#if EV_FORK_ENABLE
2669	void	3121	void
2670	ev_fork_start (EV_P_ ev_fork *w)	3122	ev_fork_start (EV_P_ ev_fork *w)
2671	{	3123	{
2672	if (expect_false (ev_is_active (w)))	3124	if (expect_false (ev_is_active (w)))
2673	return;	3125	return;
		3126
		3127	EV_FREQUENT_CHECK;
2674		3128
2675	ev_start (EV_A_ (W)w, ++forkcnt);	3129	ev_start (EV_A_ (W)w, ++forkcnt);
2676	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3130	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2677	forks [forkcnt - 1] = w;	3131	forks [forkcnt - 1] = w;
		3132
		3133	EV_FREQUENT_CHECK;
2678	}	3134	}
2679		3135
2680	void	3136	void
2681	ev_fork_stop (EV_P_ ev_fork *w)	3137	ev_fork_stop (EV_P_ ev_fork *w)
2682	{	3138	{
2683	clear_pending (EV_A_ (W)w);	3139	clear_pending (EV_A_ (W)w);
2684	if (expect_false (!ev_is_active (w)))	3140	if (expect_false (!ev_is_active (w)))
2685	return;	3141	return;
2686		3142
		3143	EV_FREQUENT_CHECK;
		3144
2687	{	3145	{
2688	int active = ev_active (w);	3146	int active = ev_active (w);
2689		3147
2690	forks [active - 1] = forks [--forkcnt];	3148	forks [active - 1] = forks [--forkcnt];
2691	ev_active (forks [active - 1]) = active;	3149	ev_active (forks [active - 1]) = active;
2692	}	3150	}
2693		3151
2694	ev_stop (EV_A_ (W)w);	3152	ev_stop (EV_A_ (W)w);
		3153
		3154	EV_FREQUENT_CHECK;
2695	}	3155	}
2696	#endif	3156	#endif
2697		3157
2698	#if EV_ASYNC_ENABLE	3158	#if EV_ASYNC_ENABLE
2699	void	3159	void
…		…
2701	{	3161	{
2702	if (expect_false (ev_is_active (w)))	3162	if (expect_false (ev_is_active (w)))
2703	return;	3163	return;
2704		3164
2705	evpipe_init (EV_A);	3165	evpipe_init (EV_A);
		3166
		3167	EV_FREQUENT_CHECK;
2706		3168
2707	ev_start (EV_A_ (W)w, ++asynccnt);	3169	ev_start (EV_A_ (W)w, ++asynccnt);
2708	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);	3170	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2709	asyncs [asynccnt - 1] = w;	3171	asyncs [asynccnt - 1] = w;
		3172
		3173	EV_FREQUENT_CHECK;
2710	}	3174	}
2711		3175
2712	void	3176	void
2713	ev_async_stop (EV_P_ ev_async *w)	3177	ev_async_stop (EV_P_ ev_async *w)
2714	{	3178	{
2715	clear_pending (EV_A_ (W)w);	3179	clear_pending (EV_A_ (W)w);
2716	if (expect_false (!ev_is_active (w)))	3180	if (expect_false (!ev_is_active (w)))
2717	return;	3181	return;
2718		3182
		3183	EV_FREQUENT_CHECK;
		3184
2719	{	3185	{
2720	int active = ev_active (w);	3186	int active = ev_active (w);
2721		3187
2722	asyncs [active - 1] = asyncs [--asynccnt];	3188	asyncs [active - 1] = asyncs [--asynccnt];
2723	ev_active (asyncs [active - 1]) = active;	3189	ev_active (asyncs [active - 1]) = active;
2724	}	3190	}
2725		3191
2726	ev_stop (EV_A_ (W)w);	3192	ev_stop (EV_A_ (W)w);
		3193
		3194	EV_FREQUENT_CHECK;
2727	}	3195	}
2728		3196
2729	void	3197	void
2730	ev_async_send (EV_P_ ev_async *w)	3198	ev_async_send (EV_P_ ev_async *w)
2731	{	3199	{
…		…
2748	once_cb (EV_P_ struct ev_once *once, int revents)	3216	once_cb (EV_P_ struct ev_once *once, int revents)
2749	{	3217	{
2750	void (*cb)(int revents, void *arg) = once->cb;	3218	void (*cb)(int revents, void *arg) = once->cb;
2751	void *arg = once->arg;	3219	void *arg = once->arg;
2752		3220
2753	ev_io_stop (EV_A_ &once->io);	3221	ev_io_stop (EV_A_ &once->io);
2754	ev_timer_stop (EV_A_ &once->to);	3222	ev_timer_stop (EV_A_ &once->to);
2755	ev_free (once);	3223	ev_free (once);
2756		3224
2757	cb (revents, arg);	3225	cb (revents, arg);
2758	}	3226	}
2759		3227
2760	static void	3228	static void
2761	once_cb_io (EV_P_ ev_io *w, int revents)	3229	once_cb_io (EV_P_ ev_io *w, int revents)
2762	{	3230	{
2763	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3231	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3232
		3233	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2764	}	3234	}
2765		3235
2766	static void	3236	static void
2767	once_cb_to (EV_P_ ev_timer *w, int revents)	3237	once_cb_to (EV_P_ ev_timer *w, int revents)
2768	{	3238	{
2769	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3239	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3240
		3241	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2770	}	3242	}
2771		3243
2772	void	3244	void
2773	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3245	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2774	{	3246	{
…		…
2796	ev_timer_set (&once->to, timeout, 0.);	3268	ev_timer_set (&once->to, timeout, 0.);
2797	ev_timer_start (EV_A_ &once->to);	3269	ev_timer_start (EV_A_ &once->to);
2798	}	3270	}
2799	}	3271	}
2800		3272
		3273	/*****************************************************************************/
		3274
		3275	#if EV_WALK_ENABLE
		3276	void
		3277	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3278	{
		3279	int i, j;
		3280	ev_watcher_list *wl, *wn;
		3281
		3282	if (types & (EV_IO | EV_EMBED))
		3283	for (i = 0; i < anfdmax; ++i)
		3284	for (wl = anfds [i].head; wl; )
		3285	{
		3286	wn = wl->next;
		3287
		3288	#if EV_EMBED_ENABLE
		3289	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3290	{
		3291	if (types & EV_EMBED)
		3292	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3293	}
		3294	else
		3295	#endif
		3296	#if EV_USE_INOTIFY
		3297	if (ev_cb ((ev_io *)wl) == infy_cb)
		3298	;
		3299	else
		3300	#endif
		3301	if ((ev_io *)wl != &pipe_w)
		3302	if (types & EV_IO)
		3303	cb (EV_A_ EV_IO, wl);
		3304
		3305	wl = wn;
		3306	}
		3307
		3308	if (types & (EV_TIMER | EV_STAT))
		3309	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3310	#if EV_STAT_ENABLE
		3311	/*TODO: timer is not always active*/
		3312	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3313	{
		3314	if (types & EV_STAT)
		3315	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3316	}
		3317	else
		3318	#endif
		3319	if (types & EV_TIMER)
		3320	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3321
		3322	#if EV_PERIODIC_ENABLE
		3323	if (types & EV_PERIODIC)
		3324	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3325	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3326	#endif
		3327
		3328	#if EV_IDLE_ENABLE
		3329	if (types & EV_IDLE)
		3330	for (j = NUMPRI; i--; )
		3331	for (i = idlecnt [j]; i--; )
		3332	cb (EV_A_ EV_IDLE, idles [j][i]);
		3333	#endif
		3334
		3335	#if EV_FORK_ENABLE
		3336	if (types & EV_FORK)
		3337	for (i = forkcnt; i--; )
		3338	if (ev_cb (forks [i]) != embed_fork_cb)
		3339	cb (EV_A_ EV_FORK, forks [i]);
		3340	#endif
		3341
		3342	#if EV_ASYNC_ENABLE
		3343	if (types & EV_ASYNC)
		3344	for (i = asynccnt; i--; )
		3345	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3346	#endif
		3347
		3348	if (types & EV_PREPARE)
		3349	for (i = preparecnt; i--; )
		3350	#if EV_EMBED_ENABLE
		3351	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3352	#endif
		3353	cb (EV_A_ EV_PREPARE, prepares [i]);
		3354
		3355	if (types & EV_CHECK)
		3356	for (i = checkcnt; i--; )
		3357	cb (EV_A_ EV_CHECK, checks [i]);
		3358
		3359	if (types & EV_SIGNAL)
		3360	for (i = 0; i < signalmax; ++i)
		3361	for (wl = signals [i].head; wl; )
		3362	{
		3363	wn = wl->next;
		3364	cb (EV_A_ EV_SIGNAL, wl);
		3365	wl = wn;
		3366	}
		3367
		3368	if (types & EV_CHILD)
		3369	for (i = EV_PID_HASHSIZE; i--; )
		3370	for (wl = childs [i]; wl; )
		3371	{
		3372	wn = wl->next;
		3373	cb (EV_A_ EV_CHILD, wl);
		3374	wl = wn;
		3375	}
		3376	/* EV_STAT 0x00001000 /* stat data changed */
		3377	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3378	}
		3379	#endif
		3380
2801	#if EV_MULTIPLICITY	3381	#if EV_MULTIPLICITY
2802	#include "ev_wrap.h"	3382	#include "ev_wrap.h"
2803	#endif	3383	#endif
2804		3384
2805	#ifdef __cplusplus	3385	#ifdef __cplusplus

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