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Comparing libev/ev.c (file contents):
Revision 1.263 by root, Wed Oct 1 18:50:03 2008 UTC vs.
Revision 1.297 by root, Fri Jul 10 00:36:21 2009 UTC

1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without modifica-	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* tion, are permitted provided that the following conditions are met:	8	* tion, are permitted provided that the following conditions are met:
9	*	9	*
…		…
47	# include EV_CONFIG_H	47	# include EV_CONFIG_H
48	# else	48	# else
49	# include "config.h"	49	# include "config.h"
50	# endif	50	# endif
51		51
		52	# if HAVE_CLOCK_SYSCALL
		53	# ifndef EV_USE_CLOCK_SYSCALL
		54	# define EV_USE_CLOCK_SYSCALL 1
		55	# ifndef EV_USE_REALTIME
		56	# define EV_USE_REALTIME 0
		57	# endif
		58	# ifndef EV_USE_MONOTONIC
		59	# define EV_USE_MONOTONIC 1
		60	# endif
		61	# endif
		62	# elif !defined(EV_USE_CLOCK_SYSCALL)
		63	# define EV_USE_CLOCK_SYSCALL 0
		64	# endif
		65
52	# if HAVE_CLOCK_GETTIME	66	# if HAVE_CLOCK_GETTIME
53	# ifndef EV_USE_MONOTONIC	67	# ifndef EV_USE_MONOTONIC
54	# define EV_USE_MONOTONIC 1	68	# define EV_USE_MONOTONIC 1
55	# endif	69	# endif
56	# ifndef EV_USE_REALTIME	70	# ifndef EV_USE_REALTIME
57	# define EV_USE_REALTIME 1	71	# define EV_USE_REALTIME 0
58	# endif	72	# endif
59	# else	73	# else
60	# ifndef EV_USE_MONOTONIC	74	# ifndef EV_USE_MONOTONIC
61	# define EV_USE_MONOTONIC 0	75	# define EV_USE_MONOTONIC 0
62	# endif	76	# endif
…		…
164	# endif	178	# endif
165	#endif	179	#endif
166		180
167	/* 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 */
168		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
169	#ifndef EV_USE_MONOTONIC	191	#ifndef EV_USE_MONOTONIC
170	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0	192	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
171	# define EV_USE_MONOTONIC 1	193	# define EV_USE_MONOTONIC 1
172	# else	194	# else
173	# define EV_USE_MONOTONIC 0	195	# define EV_USE_MONOTONIC 0
174	# endif	196	# endif
175	#endif	197	#endif
176		198
177	#ifndef EV_USE_REALTIME	199	#ifndef EV_USE_REALTIME
178	# define EV_USE_REALTIME 0	200	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
179	#endif	201	#endif
180		202
181	#ifndef EV_USE_NANOSLEEP	203	#ifndef EV_USE_NANOSLEEP
182	# if _POSIX_C_SOURCE >= 199309L	204	# if _POSIX_C_SOURCE >= 199309L
183	# define EV_USE_NANOSLEEP 1	205	# define EV_USE_NANOSLEEP 1
…		…
262		284
263	#ifndef EV_HEAP_CACHE_AT	285	#ifndef EV_HEAP_CACHE_AT
264	# define EV_HEAP_CACHE_AT !EV_MINIMAL	286	# define EV_HEAP_CACHE_AT !EV_MINIMAL
265	#endif	287	#endif
266		288
		289	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		290	/* which makes programs even slower. might work on other unices, too. */
		291	#if EV_USE_CLOCK_SYSCALL
		292	# include <syscall.h>
		293	# ifdef SYS_clock_gettime
		294	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		295	# undef EV_USE_MONOTONIC
		296	# define EV_USE_MONOTONIC 1
		297	# else
		298	# undef EV_USE_CLOCK_SYSCALL
		299	# define EV_USE_CLOCK_SYSCALL 0
		300	# endif
		301	#endif
		302
267	/* 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 */
268		304
269	#ifndef CLOCK_MONOTONIC	305	#ifndef CLOCK_MONOTONIC
270	# undef EV_USE_MONOTONIC	306	# undef EV_USE_MONOTONIC
271	# define EV_USE_MONOTONIC 0	307	# define EV_USE_MONOTONIC 0
…		…
286	# include <sys/select.h>	322	# include <sys/select.h>
287	# endif	323	# endif
288	#endif	324	#endif
289		325
290	#if EV_USE_INOTIFY	326	#if EV_USE_INOTIFY
		327	# include <sys/utsname.h>
		328	# include <sys/statfs.h>
291	# include <sys/inotify.h>	329	# include <sys/inotify.h>
292	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */	330	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
293	# ifndef IN_DONT_FOLLOW	331	# ifndef IN_DONT_FOLLOW
294	# undef EV_USE_INOTIFY	332	# undef EV_USE_INOTIFY
295	# define EV_USE_INOTIFY 0	333	# define EV_USE_INOTIFY 0
…		…
353	# define inline_speed static noinline	391	# define inline_speed static noinline
354	#else	392	#else
355	# define inline_speed static inline	393	# define inline_speed static inline
356	#endif	394	#endif
357		395
358	#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
359	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	401	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		402	#endif
360		403
361	#define EMPTY /* required for microsofts broken pseudo-c compiler */	404	#define EMPTY /* required for microsofts broken pseudo-c compiler */
362	#define EMPTY2(a,b) /* used to suppress some warnings */	405	#define EMPTY2(a,b) /* used to suppress some warnings */
363		406
364	typedef ev_watcher *W;	407	typedef ev_watcher *W;
…		…
366	typedef ev_watcher_time *WT;	409	typedef ev_watcher_time *WT;
367		410
368	#define ev_active(w) ((W)(w))->active	411	#define ev_active(w) ((W)(w))->active
369	#define ev_at(w) ((WT)(w))->at	412	#define ev_at(w) ((WT)(w))->at
370		413
371	#if EV_USE_MONOTONIC	414	#if EV_USE_REALTIME
372	/* 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 */
373	/* 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
374	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? */
375	#endif	422	#endif
376		423
377	#ifdef _WIN32	424	#ifdef _WIN32
378	# include "ev_win32.c"	425	# include "ev_win32.c"
…		…
387	{	434	{
388	syserr_cb = cb;	435	syserr_cb = cb;
389	}	436	}
390		437
391	static void noinline	438	static void noinline
392	syserr (const char *msg)	439	ev_syserr (const char *msg)
393	{	440	{
394	if (!msg)	441	if (!msg)
395	msg = "(libev) system error";	442	msg = "(libev) system error";
396		443
397	if (syserr_cb)	444	if (syserr_cb)
…		…
443	#define ev_malloc(size) ev_realloc (0, (size))	490	#define ev_malloc(size) ev_realloc (0, (size))
444	#define ev_free(ptr) ev_realloc ((ptr), 0)	491	#define ev_free(ptr) ev_realloc ((ptr), 0)
445		492
446	/*****************************************************************************/	493	/*****************************************************************************/
447		494
		495	/* file descriptor info structure */
448	typedef struct	496	typedef struct
449	{	497	{
450	WL head;	498	WL head;
451	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 */
452	unsigned char reify;	502	unsigned char unused;
		503	#if EV_USE_EPOLL
		504	unsigned int egen; /* generation counter to counter epoll bugs */
		505	#endif
453	#if EV_SELECT_IS_WINSOCKET	506	#if EV_SELECT_IS_WINSOCKET
454	SOCKET handle;	507	SOCKET handle;
455	#endif	508	#endif
456	} ANFD;	509	} ANFD;
457		510
		511	/* stores the pending event set for a given watcher */
458	typedef struct	512	typedef struct
459	{	513	{
460	W w;	514	W w;
461	int events;	515	int events; /* the pending event set for the given watcher */
462	} ANPENDING;	516	} ANPENDING;
463		517
464	#if EV_USE_INOTIFY	518	#if EV_USE_INOTIFY
465	/* hash table entry per inotify-id */	519	/* hash table entry per inotify-id */
466	typedef struct	520	typedef struct
…		…
469	} ANFS;	523	} ANFS;
470	#endif	524	#endif
471		525
472	/* Heap Entry */	526	/* Heap Entry */
473	#if EV_HEAP_CACHE_AT	527	#if EV_HEAP_CACHE_AT
		528	/* a heap element */
474	typedef struct {	529	typedef struct {
475	ev_tstamp at;	530	ev_tstamp at;
476	WT w;	531	WT w;
477	} ANHE;	532	} ANHE;
478		533
479	#define ANHE_w(he) (he).w /* access watcher, read-write */	534	#define ANHE_w(he) (he).w /* access watcher, read-write */
480	#define ANHE_at(he) (he).at /* access cached at, read-only */	535	#define ANHE_at(he) (he).at /* access cached at, read-only */
481	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */	536	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
482	#else	537	#else
		538	/* a heap element */
483	typedef WT ANHE;	539	typedef WT ANHE;
484		540
485	#define ANHE_w(he) (he)	541	#define ANHE_w(he) (he)
486	#define ANHE_at(he) (he)->at	542	#define ANHE_at(he) (he)->at
487	#define ANHE_at_cache(he)	543	#define ANHE_at_cache(he)
…		…
511		567
512	static int ev_default_loop_ptr;	568	static int ev_default_loop_ptr;
513		569
514	#endif	570	#endif
515		571
		572	#if EV_MINIMAL < 2
		573	# define EV_SUSPEND_CB if (expect_false (suspend_cb)) suspend_cb (EV_A)
		574	# define EV_RESUME_CB if (expect_false (resume_cb )) resume_cb (EV_A)
		575	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		576	#else
		577	# define EV_SUSPEND_CB (void)0
		578	# define EV_RESUME_CB (void)0
		579	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		580	#endif
		581
516	/*****************************************************************************/	582	/*****************************************************************************/
517		583
		584	#ifndef EV_HAVE_EV_TIME
518	ev_tstamp	585	ev_tstamp
519	ev_time (void)	586	ev_time (void)
520	{	587	{
521	#if EV_USE_REALTIME	588	#if EV_USE_REALTIME
		589	if (expect_true (have_realtime))
		590	{
522	struct timespec ts;	591	struct timespec ts;
523	clock_gettime (CLOCK_REALTIME, &ts);	592	clock_gettime (CLOCK_REALTIME, &ts);
524	return ts.tv_sec + ts.tv_nsec * 1e-9;	593	return ts.tv_sec + ts.tv_nsec * 1e-9;
525	#else	594	}
		595	#endif
		596
526	struct timeval tv;	597	struct timeval tv;
527	gettimeofday (&tv, 0);	598	gettimeofday (&tv, 0);
528	return tv.tv_sec + tv.tv_usec * 1e-6;	599	return tv.tv_sec + tv.tv_usec * 1e-6;
529	#endif
530	}	600	}
		601	#endif
531		602
532	ev_tstamp inline_size	603	inline_size ev_tstamp
533	get_clock (void)	604	get_clock (void)
534	{	605	{
535	#if EV_USE_MONOTONIC	606	#if EV_USE_MONOTONIC
536	if (expect_true (have_monotonic))	607	if (expect_true (have_monotonic))
537	{	608	{
…		…
571		642
572	tv.tv_sec = (time_t)delay;	643	tv.tv_sec = (time_t)delay;
573	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	644	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
574		645
575	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */	646	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
576	/* somehting nto guaranteed by newer posix versions, but guaranteed */	647	/* somehting not guaranteed by newer posix versions, but guaranteed */
577	/* by older ones */	648	/* by older ones */
578	select (0, 0, 0, 0, &tv);	649	select (0, 0, 0, 0, &tv);
579	#endif	650	#endif
580	}	651	}
581	}	652	}
582		653
583	/*****************************************************************************/	654	/*****************************************************************************/
584		655
585	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	656	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
586		657
587	int inline_size	658	/* find a suitable new size for the given array, */
		659	/* hopefully by rounding to a ncie-to-malloc size */
		660	inline_size int
588	array_nextsize (int elem, int cur, int cnt)	661	array_nextsize (int elem, int cur, int cnt)
589	{	662	{
590	int ncur = cur + 1;	663	int ncur = cur + 1;
591		664
592	do	665	do
…		…
609	array_realloc (int elem, void *base, int *cur, int cnt)	682	array_realloc (int elem, void *base, int *cur, int cnt)
610	{	683	{
611	*cur = array_nextsize (elem, *cur, cnt);	684	*cur = array_nextsize (elem, *cur, cnt);
612	return ev_realloc (base, elem * *cur);	685	return ev_realloc (base, elem * *cur);
613	}	686	}
		687
		688	#define array_init_zero(base,count) \
		689	memset ((void *)(base), 0, sizeof (*(base)) * (count))
614		690
615	#define array_needsize(type,base,cur,cnt,init) \	691	#define array_needsize(type,base,cur,cnt,init) \
616	if (expect_false ((cnt) > (cur))) \	692	if (expect_false ((cnt) > (cur))) \
617	{ \	693	{ \
618	int ocur_ = (cur); \	694	int ocur_ = (cur); \
…		…
630	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	706	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
631	}	707	}
632	#endif	708	#endif
633		709
634	#define array_free(stem, idx) \	710	#define array_free(stem, idx) \
635	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	711	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
636		712
637	/*****************************************************************************/	713	/*****************************************************************************/
		714
		715	/* dummy callback for pending events */
		716	static void noinline
		717	pendingcb (EV_P_ ev_prepare *w, int revents)
		718	{
		719	}
638		720
639	void noinline	721	void noinline
640	ev_feed_event (EV_P_ void *w, int revents)	722	ev_feed_event (EV_P_ void *w, int revents)
641	{	723	{
642	W w_ = (W)w;	724	W w_ = (W)w;
…		…
651	pendings [pri][w_->pending - 1].w = w_;	733	pendings [pri][w_->pending - 1].w = w_;
652	pendings [pri][w_->pending - 1].events = revents;	734	pendings [pri][w_->pending - 1].events = revents;
653	}	735	}
654	}	736	}
655		737
656	void inline_speed	738	inline_speed void
		739	feed_reverse (EV_P_ W w)
		740	{
		741	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		742	rfeeds [rfeedcnt++] = w;
		743	}
		744
		745	inline_size void
		746	feed_reverse_done (EV_P_ int revents)
		747	{
		748	do
		749	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		750	while (rfeedcnt);
		751	}
		752
		753	inline_speed void
657	queue_events (EV_P_ W *events, int eventcnt, int type)	754	queue_events (EV_P_ W *events, int eventcnt, int type)
658	{	755	{
659	int i;	756	int i;
660		757
661	for (i = 0; i < eventcnt; ++i)	758	for (i = 0; i < eventcnt; ++i)
662	ev_feed_event (EV_A_ events [i], type);	759	ev_feed_event (EV_A_ events [i], type);
663	}	760	}
664		761
665	/*****************************************************************************/	762	/*****************************************************************************/
666		763
667	void inline_size	764	inline_speed void
668	anfds_init (ANFD *base, int count)
669	{
670	while (count--)
671	{
672	base->head = 0;
673	base->events = EV_NONE;
674	base->reify = 0;
675
676	++base;
677	}
678	}
679
680	void inline_speed
681	fd_event (EV_P_ int fd, int revents)	765	fd_event (EV_P_ int fd, int revents)
682	{	766	{
683	ANFD *anfd = anfds + fd;	767	ANFD *anfd = anfds + fd;
684	ev_io *w;	768	ev_io *w;
685		769
…		…
697	{	781	{
698	if (fd >= 0 && fd < anfdmax)	782	if (fd >= 0 && fd < anfdmax)
699	fd_event (EV_A_ fd, revents);	783	fd_event (EV_A_ fd, revents);
700	}	784	}
701		785
702	void inline_size	786	/* make sure the external fd watch events are in-sync */
		787	/* with the kernel/libev internal state */
		788	inline_size void
703	fd_reify (EV_P)	789	fd_reify (EV_P)
704	{	790	{
705	int i;	791	int i;
706		792
707	for (i = 0; i < fdchangecnt; ++i)	793	for (i = 0; i < fdchangecnt; ++i)
…		…
722	#ifdef EV_FD_TO_WIN32_HANDLE	808	#ifdef EV_FD_TO_WIN32_HANDLE
723	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	809	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
724	#else	810	#else
725	anfd->handle = _get_osfhandle (fd);	811	anfd->handle = _get_osfhandle (fd);
726	#endif	812	#endif
727	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	813	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
728	}	814	}
729	#endif	815	#endif
730		816
731	{	817	{
732	unsigned char o_events = anfd->events;	818	unsigned char o_events = anfd->events;
733	unsigned char o_reify = anfd->reify;	819	unsigned char o_reify = anfd->reify;
734		820
735	anfd->reify = 0;	821	anfd->reify = 0;
736	anfd->events = events;	822	anfd->events = events;
737		823
738	if (o_events != events || o_reify & EV_IOFDSET)	824	if (o_events != events || o_reify & EV__IOFDSET)
739	backend_modify (EV_A_ fd, o_events, events);	825	backend_modify (EV_A_ fd, o_events, events);
740	}	826	}
741	}	827	}
742		828
743	fdchangecnt = 0;	829	fdchangecnt = 0;
744	}	830	}
745		831
746	void inline_size	832	/* something about the given fd changed */
		833	inline_size void
747	fd_change (EV_P_ int fd, int flags)	834	fd_change (EV_P_ int fd, int flags)
748	{	835	{
749	unsigned char reify = anfds [fd].reify;	836	unsigned char reify = anfds [fd].reify;
750	anfds [fd].reify |= flags;	837	anfds [fd].reify |= flags;
751		838
…		…
755	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	842	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
756	fdchanges [fdchangecnt - 1] = fd;	843	fdchanges [fdchangecnt - 1] = fd;
757	}	844	}
758	}	845	}
759		846
760	void inline_speed	847	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		848	inline_speed void
761	fd_kill (EV_P_ int fd)	849	fd_kill (EV_P_ int fd)
762	{	850	{
763	ev_io *w;	851	ev_io *w;
764		852
765	while ((w = (ev_io *)anfds [fd].head))	853	while ((w = (ev_io *)anfds [fd].head))
…		…
767	ev_io_stop (EV_A_ w);	855	ev_io_stop (EV_A_ w);
768	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	856	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
769	}	857	}
770	}	858	}
771		859
772	int inline_size	860	/* check whether the given fd is atcually valid, for error recovery */
		861	inline_size int
773	fd_valid (int fd)	862	fd_valid (int fd)
774	{	863	{
775	#ifdef _WIN32	864	#ifdef _WIN32
776	return _get_osfhandle (fd) != -1;	865	return _get_osfhandle (fd) != -1;
777	#else	866	#else
…		…
813		902
814	for (fd = 0; fd < anfdmax; ++fd)	903	for (fd = 0; fd < anfdmax; ++fd)
815	if (anfds [fd].events)	904	if (anfds [fd].events)
816	{	905	{
817	anfds [fd].events = 0;	906	anfds [fd].events = 0;
		907	anfds [fd].emask = 0;
818	fd_change (EV_A_ fd, EV_IOFDSET | 1);	908	fd_change (EV_A_ fd, EV__IOFDSET | 1);
819	}	909	}
820	}	910	}
821		911
822	/*****************************************************************************/	912	/*****************************************************************************/
823		913
…		…
839	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	929	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
840	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)	930	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
841	#define UPHEAP_DONE(p,k) ((p) == (k))	931	#define UPHEAP_DONE(p,k) ((p) == (k))
842		932
843	/* away from the root */	933	/* away from the root */
844	void inline_speed	934	inline_speed void
845	downheap (ANHE *heap, int N, int k)	935	downheap (ANHE *heap, int N, int k)
846	{	936	{
847	ANHE he = heap [k];	937	ANHE he = heap [k];
848	ANHE *E = heap + N + HEAP0;	938	ANHE *E = heap + N + HEAP0;
849		939
…		…
889	#define HEAP0 1	979	#define HEAP0 1
890	#define HPARENT(k) ((k) >> 1)	980	#define HPARENT(k) ((k) >> 1)
891	#define UPHEAP_DONE(p,k) (!(p))	981	#define UPHEAP_DONE(p,k) (!(p))
892		982
893	/* away from the root */	983	/* away from the root */
894	void inline_speed	984	inline_speed void
895	downheap (ANHE *heap, int N, int k)	985	downheap (ANHE *heap, int N, int k)
896	{	986	{
897	ANHE he = heap [k];	987	ANHE he = heap [k];
898		988
899	for (;;)	989	for (;;)
…		…
919	ev_active (ANHE_w (he)) = k;	1009	ev_active (ANHE_w (he)) = k;
920	}	1010	}
921	#endif	1011	#endif
922		1012
923	/* towards the root */	1013	/* towards the root */
924	void inline_speed	1014	inline_speed void
925	upheap (ANHE *heap, int k)	1015	upheap (ANHE *heap, int k)
926	{	1016	{
927	ANHE he = heap [k];	1017	ANHE he = heap [k];
928		1018
929	for (;;)	1019	for (;;)
…		…
940		1030
941	heap [k] = he;	1031	heap [k] = he;
942	ev_active (ANHE_w (he)) = k;	1032	ev_active (ANHE_w (he)) = k;
943	}	1033	}
944		1034
945	void inline_size	1035	/* move an element suitably so it is in a correct place */
		1036	inline_size void
946	adjustheap (ANHE *heap, int N, int k)	1037	adjustheap (ANHE *heap, int N, int k)
947	{	1038	{
948	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1039	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
949	upheap (heap, k);	1040	upheap (heap, k);
950	else	1041	else
951	downheap (heap, N, k);	1042	downheap (heap, N, k);
952	}	1043	}
953		1044
954	/* rebuild the heap: this function is used only once and executed rarely */	1045	/* rebuild the heap: this function is used only once and executed rarely */
955	void inline_size	1046	inline_size void
956	reheap (ANHE *heap, int N)	1047	reheap (ANHE *heap, int N)
957	{	1048	{
958	int i;	1049	int i;
959		1050
960	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */	1051	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
…		…
963	upheap (heap, i + HEAP0);	1054	upheap (heap, i + HEAP0);
964	}	1055	}
965		1056
966	/*****************************************************************************/	1057	/*****************************************************************************/
967		1058
		1059	/* associate signal watchers to a signal signal */
968	typedef struct	1060	typedef struct
969	{	1061	{
970	WL head;	1062	WL head;
971	EV_ATOMIC_T gotsig;	1063	EV_ATOMIC_T gotsig;
972	} ANSIG;	1064	} ANSIG;
…		…
974	static ANSIG *signals;	1066	static ANSIG *signals;
975	static int signalmax;	1067	static int signalmax;
976		1068
977	static EV_ATOMIC_T gotsig;	1069	static EV_ATOMIC_T gotsig;
978		1070
979	void inline_size
980	signals_init (ANSIG *base, int count)
981	{
982	while (count--)
983	{
984	base->head = 0;
985	base->gotsig = 0;
986
987	++base;
988	}
989	}
990
991	/*****************************************************************************/	1071	/*****************************************************************************/
992		1072
993	void inline_speed	1073	/* used to prepare libev internal fd's */
		1074	/* this is not fork-safe */
		1075	inline_speed void
994	fd_intern (int fd)	1076	fd_intern (int fd)
995	{	1077	{
996	#ifdef _WIN32	1078	#ifdef _WIN32
997	unsigned long arg = 1;	1079	unsigned long arg = 1;
998	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1080	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
1003	}	1085	}
1004		1086
1005	static void noinline	1087	static void noinline
1006	evpipe_init (EV_P)	1088	evpipe_init (EV_P)
1007	{	1089	{
1008	if (!ev_is_active (&pipeev))	1090	if (!ev_is_active (&pipe_w))
1009	{	1091	{
1010	#if EV_USE_EVENTFD	1092	#if EV_USE_EVENTFD
1011	if ((evfd = eventfd (0, 0)) >= 0)	1093	if ((evfd = eventfd (0, 0)) >= 0)
1012	{	1094	{
1013	evpipe [0] = -1;	1095	evpipe [0] = -1;
1014	fd_intern (evfd);	1096	fd_intern (evfd);
1015	ev_io_set (&pipeev, evfd, EV_READ);	1097	ev_io_set (&pipe_w, evfd, EV_READ);
1016	}	1098	}
1017	else	1099	else
1018	#endif	1100	#endif
1019	{	1101	{
1020	while (pipe (evpipe))	1102	while (pipe (evpipe))
1021	syserr ("(libev) error creating signal/async pipe");	1103	ev_syserr ("(libev) error creating signal/async pipe");
1022		1104
1023	fd_intern (evpipe [0]);	1105	fd_intern (evpipe [0]);
1024	fd_intern (evpipe [1]);	1106	fd_intern (evpipe [1]);
1025	ev_io_set (&pipeev, evpipe [0], EV_READ);	1107	ev_io_set (&pipe_w, evpipe [0], EV_READ);
1026	}	1108	}
1027		1109
1028	ev_io_start (EV_A_ &pipeev);	1110	ev_io_start (EV_A_ &pipe_w);
1029	ev_unref (EV_A); /* watcher should not keep loop alive */	1111	ev_unref (EV_A); /* watcher should not keep loop alive */
1030	}	1112	}
1031	}	1113	}
1032		1114
1033	void inline_size	1115	inline_size void
1034	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1116	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1035	{	1117	{
1036	if (!*flag)	1118	if (!*flag)
1037	{	1119	{
1038	int old_errno = errno; /* save errno because write might clobber it */	1120	int old_errno = errno; /* save errno because write might clobber it */
…		…
1051		1133
1052	errno = old_errno;	1134	errno = old_errno;
1053	}	1135	}
1054	}	1136	}
1055		1137
		1138	/* called whenever the libev signal pipe */
		1139	/* got some events (signal, async) */
1056	static void	1140	static void
1057	pipecb (EV_P_ ev_io *iow, int revents)	1141	pipecb (EV_P_ ev_io *iow, int revents)
1058	{	1142	{
1059	#if EV_USE_EVENTFD	1143	#if EV_USE_EVENTFD
1060	if (evfd >= 0)	1144	if (evfd >= 0)
…		…
1116	ev_feed_signal_event (EV_P_ int signum)	1200	ev_feed_signal_event (EV_P_ int signum)
1117	{	1201	{
1118	WL w;	1202	WL w;
1119		1203
1120	#if EV_MULTIPLICITY	1204	#if EV_MULTIPLICITY
1121	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1205	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1122	#endif	1206	#endif
1123		1207
1124	--signum;	1208	--signum;
1125		1209
1126	if (signum < 0 || signum >= signalmax)	1210	if (signum < 0 || signum >= signalmax)
…		…
1142		1226
1143	#ifndef WIFCONTINUED	1227	#ifndef WIFCONTINUED
1144	# define WIFCONTINUED(status) 0	1228	# define WIFCONTINUED(status) 0
1145	#endif	1229	#endif
1146		1230
1147	void inline_speed	1231	/* handle a single child status event */
		1232	inline_speed void
1148	child_reap (EV_P_ int chain, int pid, int status)	1233	child_reap (EV_P_ int chain, int pid, int status)
1149	{	1234	{
1150	ev_child *w;	1235	ev_child *w;
1151	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1236	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1152		1237
…		…
1165		1250
1166	#ifndef WCONTINUED	1251	#ifndef WCONTINUED
1167	# define WCONTINUED 0	1252	# define WCONTINUED 0
1168	#endif	1253	#endif
1169		1254
		1255	/* called on sigchld etc., calls waitpid */
1170	static void	1256	static void
1171	childcb (EV_P_ ev_signal *sw, int revents)	1257	childcb (EV_P_ ev_signal *sw, int revents)
1172	{	1258	{
1173	int pid, status;	1259	int pid, status;
1174		1260
…		…
1255	/* kqueue is borked on everything but netbsd apparently */	1341	/* kqueue is borked on everything but netbsd apparently */
1256	/* it usually doesn't work correctly on anything but sockets and pipes */	1342	/* it usually doesn't work correctly on anything but sockets and pipes */
1257	flags &= ~EVBACKEND_KQUEUE;	1343	flags &= ~EVBACKEND_KQUEUE;
1258	#endif	1344	#endif
1259	#ifdef __APPLE__	1345	#ifdef __APPLE__
1260	// flags &= ~EVBACKEND_KQUEUE; for documentation	1346	/* only select works correctly on that "unix-certified" platform */
1261	flags &= ~EVBACKEND_POLL;	1347	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1348	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1262	#endif	1349	#endif
1263		1350
1264	return flags;	1351	return flags;
1265	}	1352	}
1266		1353
…		…
1280	ev_backend (EV_P)	1367	ev_backend (EV_P)
1281	{	1368	{
1282	return backend;	1369	return backend;
1283	}	1370	}
1284		1371
		1372	#if EV_MINIMAL < 2
1285	unsigned int	1373	unsigned int
1286	ev_loop_count (EV_P)	1374	ev_loop_count (EV_P)
1287	{	1375	{
1288	return loop_count;	1376	return loop_count;
1289	}	1377	}
1290		1378
		1379	unsigned int
		1380	ev_loop_depth (EV_P)
		1381	{
		1382	return loop_depth;
		1383	}
		1384
1291	void	1385	void
1292	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1386	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1293	{	1387	{
1294	io_blocktime = interval;	1388	io_blocktime = interval;
1295	}	1389	}
…		…
1298	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1392	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1299	{	1393	{
1300	timeout_blocktime = interval;	1394	timeout_blocktime = interval;
1301	}	1395	}
1302		1396
		1397	void
		1398	ev_set_userdata (EV_P_ void *data)
		1399	{
		1400	userdata = data;
		1401	}
		1402
		1403	void *
		1404	ev_userdata (EV_P)
		1405	{
		1406	return userdata;
		1407	}
		1408
		1409	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1410	{
		1411	invoke_cb = invoke_pending_cb;
		1412	}
		1413
		1414	void ev_set_blocking_cb (EV_P_ void (*suspend_cb_)(EV_P), void (*resume_cb_)(EV_P))
		1415	{
		1416	suspend_cb = suspend_cb_;
		1417	resume_cb = resume_cb_;
		1418	}
		1419	#endif
		1420
		1421	/* initialise a loop structure, must be zero-initialised */
1303	static void noinline	1422	static void noinline
1304	loop_init (EV_P_ unsigned int flags)	1423	loop_init (EV_P_ unsigned int flags)
1305	{	1424	{
1306	if (!backend)	1425	if (!backend)
1307	{	1426	{
		1427	#if EV_USE_REALTIME
		1428	if (!have_realtime)
		1429	{
		1430	struct timespec ts;
		1431
		1432	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1433	have_realtime = 1;
		1434	}
		1435	#endif
		1436
1308	#if EV_USE_MONOTONIC	1437	#if EV_USE_MONOTONIC
		1438	if (!have_monotonic)
1309	{	1439	{
1310	struct timespec ts;	1440	struct timespec ts;
		1441
1311	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1442	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1312	have_monotonic = 1;	1443	have_monotonic = 1;
1313	}	1444	}
1314	#endif	1445	#endif
1315		1446
1316	ev_rt_now = ev_time ();	1447	ev_rt_now = ev_time ();
1317	mn_now = get_clock ();	1448	mn_now = get_clock ();
1318	now_floor = mn_now;	1449	now_floor = mn_now;
1319	rtmn_diff = ev_rt_now - mn_now;	1450	rtmn_diff = ev_rt_now - mn_now;
		1451	#if EV_MINIMAL < 2
		1452	invoke_cb = ev_invoke_pending;
		1453	#endif
1320		1454
1321	io_blocktime = 0.;	1455	io_blocktime = 0.;
1322	timeout_blocktime = 0.;	1456	timeout_blocktime = 0.;
1323	backend = 0;	1457	backend = 0;
1324	backend_fd = -1;	1458	backend_fd = -1;
…		…
1355	#endif	1489	#endif
1356	#if EV_USE_SELECT	1490	#if EV_USE_SELECT
1357	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1491	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1358	#endif	1492	#endif
1359		1493
		1494	ev_prepare_init (&pending_w, pendingcb);
		1495
1360	ev_init (&pipeev, pipecb);	1496	ev_init (&pipe_w, pipecb);
1361	ev_set_priority (&pipeev, EV_MAXPRI);	1497	ev_set_priority (&pipe_w, EV_MAXPRI);
1362	}	1498	}
1363	}	1499	}
1364		1500
		1501	/* free up a loop structure */
1365	static void noinline	1502	static void noinline
1366	loop_destroy (EV_P)	1503	loop_destroy (EV_P)
1367	{	1504	{
1368	int i;	1505	int i;
1369		1506
1370	if (ev_is_active (&pipeev))	1507	if (ev_is_active (&pipe_w))
1371	{	1508	{
1372	ev_ref (EV_A); /* signal watcher */	1509	ev_ref (EV_A); /* signal watcher */
1373	ev_io_stop (EV_A_ &pipeev);	1510	ev_io_stop (EV_A_ &pipe_w);
1374		1511
1375	#if EV_USE_EVENTFD	1512	#if EV_USE_EVENTFD
1376	if (evfd >= 0)	1513	if (evfd >= 0)
1377	close (evfd);	1514	close (evfd);
1378	#endif	1515	#endif
…		…
1417	}	1554	}
1418		1555
1419	ev_free (anfds); anfdmax = 0;	1556	ev_free (anfds); anfdmax = 0;
1420		1557
1421	/* have to use the microsoft-never-gets-it-right macro */	1558	/* have to use the microsoft-never-gets-it-right macro */
		1559	array_free (rfeed, EMPTY);
1422	array_free (fdchange, EMPTY);	1560	array_free (fdchange, EMPTY);
1423	array_free (timer, EMPTY);	1561	array_free (timer, EMPTY);
1424	#if EV_PERIODIC_ENABLE	1562	#if EV_PERIODIC_ENABLE
1425	array_free (periodic, EMPTY);	1563	array_free (periodic, EMPTY);
1426	#endif	1564	#endif
…		…
1435		1573
1436	backend = 0;	1574	backend = 0;
1437	}	1575	}
1438		1576
1439	#if EV_USE_INOTIFY	1577	#if EV_USE_INOTIFY
1440	void inline_size infy_fork (EV_P);	1578	inline_size void infy_fork (EV_P);
1441	#endif	1579	#endif
1442		1580
1443	void inline_size	1581	inline_size void
1444	loop_fork (EV_P)	1582	loop_fork (EV_P)
1445	{	1583	{
1446	#if EV_USE_PORT	1584	#if EV_USE_PORT
1447	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1585	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1448	#endif	1586	#endif
…		…
1454	#endif	1592	#endif
1455	#if EV_USE_INOTIFY	1593	#if EV_USE_INOTIFY
1456	infy_fork (EV_A);	1594	infy_fork (EV_A);
1457	#endif	1595	#endif
1458		1596
1459	if (ev_is_active (&pipeev))	1597	if (ev_is_active (&pipe_w))
1460	{	1598	{
1461	/* this "locks" the handlers against writing to the pipe */	1599	/* this "locks" the handlers against writing to the pipe */
1462	/* while we modify the fd vars */	1600	/* while we modify the fd vars */
1463	gotsig = 1;	1601	gotsig = 1;
1464	#if EV_ASYNC_ENABLE	1602	#if EV_ASYNC_ENABLE
1465	gotasync = 1;	1603	gotasync = 1;
1466	#endif	1604	#endif
1467		1605
1468	ev_ref (EV_A);	1606	ev_ref (EV_A);
1469	ev_io_stop (EV_A_ &pipeev);	1607	ev_io_stop (EV_A_ &pipe_w);
1470		1608
1471	#if EV_USE_EVENTFD	1609	#if EV_USE_EVENTFD
1472	if (evfd >= 0)	1610	if (evfd >= 0)
1473	close (evfd);	1611	close (evfd);
1474	#endif	1612	#endif
…		…
1479	close (evpipe [1]);	1617	close (evpipe [1]);
1480	}	1618	}
1481		1619
1482	evpipe_init (EV_A);	1620	evpipe_init (EV_A);
1483	/* now iterate over everything, in case we missed something */	1621	/* now iterate over everything, in case we missed something */
1484	pipecb (EV_A_ &pipeev, EV_READ);	1622	pipecb (EV_A_ &pipe_w, EV_READ);
1485	}	1623	}
1486		1624
1487	postfork = 0;	1625	postfork = 0;
1488	}	1626	}
1489		1627
…		…
1514	void	1652	void
1515	ev_loop_fork (EV_P)	1653	ev_loop_fork (EV_P)
1516	{	1654	{
1517	postfork = 1; /* must be in line with ev_default_fork */	1655	postfork = 1; /* must be in line with ev_default_fork */
1518	}	1656	}
		1657	#endif /* multiplicity */
1519		1658
1520	#if EV_VERIFY	1659	#if EV_VERIFY
1521	static void noinline	1660	static void noinline
1522	verify_watcher (EV_P_ W w)	1661	verify_watcher (EV_P_ W w)
1523	{	1662	{
1524	assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));	1663	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1525		1664
1526	if (w->pending)	1665	if (w->pending)
1527	assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));	1666	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1528	}	1667	}
1529		1668
1530	static void noinline	1669	static void noinline
1531	verify_heap (EV_P_ ANHE *heap, int N)	1670	verify_heap (EV_P_ ANHE *heap, int N)
1532	{	1671	{
1533	int i;	1672	int i;
1534		1673
1535	for (i = HEAP0; i < N + HEAP0; ++i)	1674	for (i = HEAP0; i < N + HEAP0; ++i)
1536	{	1675	{
1537	assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));	1676	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1538	assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));	1677	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1539	assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));	1678	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1540		1679
1541	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));	1680	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1542	}	1681	}
1543	}	1682	}
1544		1683
1545	static void noinline	1684	static void noinline
1546	array_verify (EV_P_ W *ws, int cnt)	1685	array_verify (EV_P_ W *ws, int cnt)
1547	{	1686	{
1548	while (cnt--)	1687	while (cnt--)
1549	{	1688	{
1550	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));	1689	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1551	verify_watcher (EV_A_ ws [cnt]);	1690	verify_watcher (EV_A_ ws [cnt]);
1552	}	1691	}
1553	}	1692	}
1554	#endif	1693	#endif
1555		1694
		1695	#if EV_MINIMAL < 2
1556	void	1696	void
1557	ev_loop_verify (EV_P)	1697	ev_loop_verify (EV_P)
1558	{	1698	{
1559	#if EV_VERIFY	1699	#if EV_VERIFY
1560	int i;	1700	int i;
…		…
1562		1702
1563	assert (activecnt >= -1);	1703	assert (activecnt >= -1);
1564		1704
1565	assert (fdchangemax >= fdchangecnt);	1705	assert (fdchangemax >= fdchangecnt);
1566	for (i = 0; i < fdchangecnt; ++i)	1706	for (i = 0; i < fdchangecnt; ++i)
1567	assert (("negative fd in fdchanges", fdchanges [i] >= 0));	1707	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1568		1708
1569	assert (anfdmax >= 0);	1709	assert (anfdmax >= 0);
1570	for (i = 0; i < anfdmax; ++i)	1710	for (i = 0; i < anfdmax; ++i)
1571	for (w = anfds [i].head; w; w = w->next)	1711	for (w = anfds [i].head; w; w = w->next)
1572	{	1712	{
1573	verify_watcher (EV_A_ (W)w);	1713	verify_watcher (EV_A_ (W)w);
1574	assert (("inactive fd watcher on anfd list", ev_active (w) == 1));	1714	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1575	assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));	1715	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1576	}	1716	}
1577		1717
1578	assert (timermax >= timercnt);	1718	assert (timermax >= timercnt);
1579	verify_heap (EV_A_ timers, timercnt);	1719	verify_heap (EV_A_ timers, timercnt);
1580		1720
…		…
1613	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1753	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1614	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)	1754	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1615	# endif	1755	# endif
1616	#endif	1756	#endif
1617	}	1757	}
1618		1758	#endif
1619	#endif /* multiplicity */
1620		1759
1621	#if EV_MULTIPLICITY	1760	#if EV_MULTIPLICITY
1622	struct ev_loop *	1761	struct ev_loop *
1623	ev_default_loop_init (unsigned int flags)	1762	ev_default_loop_init (unsigned int flags)
1624	#else	1763	#else
…		…
1657	{	1796	{
1658	#if EV_MULTIPLICITY	1797	#if EV_MULTIPLICITY
1659	struct ev_loop *loop = ev_default_loop_ptr;	1798	struct ev_loop *loop = ev_default_loop_ptr;
1660	#endif	1799	#endif
1661		1800
		1801	ev_default_loop_ptr = 0;
		1802
1662	#ifndef _WIN32	1803	#ifndef _WIN32
1663	ev_ref (EV_A); /* child watcher */	1804	ev_ref (EV_A); /* child watcher */
1664	ev_signal_stop (EV_A_ &childev);	1805	ev_signal_stop (EV_A_ &childev);
1665	#endif	1806	#endif
1666		1807
…		…
1672	{	1813	{
1673	#if EV_MULTIPLICITY	1814	#if EV_MULTIPLICITY
1674	struct ev_loop *loop = ev_default_loop_ptr;	1815	struct ev_loop *loop = ev_default_loop_ptr;
1675	#endif	1816	#endif
1676		1817
1677	if (backend)
1678	postfork = 1; /* must be in line with ev_loop_fork */	1818	postfork = 1; /* must be in line with ev_loop_fork */
1679	}	1819	}
1680		1820
1681	/*****************************************************************************/	1821	/*****************************************************************************/
1682		1822
1683	void	1823	void
1684	ev_invoke (EV_P_ void *w, int revents)	1824	ev_invoke (EV_P_ void *w, int revents)
1685	{	1825	{
1686	EV_CB_INVOKE ((W)w, revents);	1826	EV_CB_INVOKE ((W)w, revents);
1687	}	1827	}
1688		1828
1689	void inline_speed	1829	void noinline
1690	call_pending (EV_P)	1830	ev_invoke_pending (EV_P)
1691	{	1831	{
1692	int pri;	1832	int pri;
1693		1833
1694	for (pri = NUMPRI; pri--; )	1834	for (pri = NUMPRI; pri--; )
1695	while (pendingcnt [pri])	1835	while (pendingcnt [pri])
1696	{	1836	{
1697	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1837	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1698		1838
1699	if (expect_true (p->w))
1700	{
1701	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1839	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1840	/* ^ this is no longer true, as pending_w could be here */
1702		1841
1703	p->w->pending = 0;	1842	p->w->pending = 0;
1704	EV_CB_INVOKE (p->w, p->events);	1843	EV_CB_INVOKE (p->w, p->events);
1705	EV_FREQUENT_CHECK;	1844	EV_FREQUENT_CHECK;
1706	}
1707	}	1845	}
1708	}	1846	}
1709		1847
1710	#if EV_IDLE_ENABLE	1848	#if EV_IDLE_ENABLE
1711	void inline_size	1849	/* make idle watchers pending. this handles the "call-idle */
		1850	/* only when higher priorities are idle" logic */
		1851	inline_size void
1712	idle_reify (EV_P)	1852	idle_reify (EV_P)
1713	{	1853	{
1714	if (expect_false (idleall))	1854	if (expect_false (idleall))
1715	{	1855	{
1716	int pri;	1856	int pri;
…		…
1728	}	1868	}
1729	}	1869	}
1730	}	1870	}
1731	#endif	1871	#endif
1732		1872
1733	void inline_size	1873	/* make timers pending */
		1874	inline_size void
1734	timers_reify (EV_P)	1875	timers_reify (EV_P)
1735	{	1876	{
1736	EV_FREQUENT_CHECK;	1877	EV_FREQUENT_CHECK;
1737		1878
1738	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	1879	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1739	{	1880	{
1740	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	1881	do
1741
1742	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1743
1744	/* first reschedule or stop timer */
1745	if (w->repeat)
1746	{	1882	{
		1883	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1884
		1885	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		1886
		1887	/* first reschedule or stop timer */
		1888	if (w->repeat)
		1889	{
1747	ev_at (w) += w->repeat;	1890	ev_at (w) += w->repeat;
1748	if (ev_at (w) < mn_now)	1891	if (ev_at (w) < mn_now)
1749	ev_at (w) = mn_now;	1892	ev_at (w) = mn_now;
1750		1893
1751	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1894	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1752		1895
1753	ANHE_at_cache (timers [HEAP0]);	1896	ANHE_at_cache (timers [HEAP0]);
1754	downheap (timers, timercnt, HEAP0);	1897	downheap (timers, timercnt, HEAP0);
		1898	}
		1899	else
		1900	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1901
		1902	EV_FREQUENT_CHECK;
		1903	feed_reverse (EV_A_ (W)w);
1755	}	1904	}
1756	else	1905	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1757	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1758		1906
1759	EV_FREQUENT_CHECK;
1760	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1907	feed_reverse_done (EV_A_ EV_TIMEOUT);
1761	}	1908	}
1762	}	1909	}
1763		1910
1764	#if EV_PERIODIC_ENABLE	1911	#if EV_PERIODIC_ENABLE
1765	void inline_size	1912	/* make periodics pending */
		1913	inline_size void
1766	periodics_reify (EV_P)	1914	periodics_reify (EV_P)
1767	{	1915	{
1768	EV_FREQUENT_CHECK;	1916	EV_FREQUENT_CHECK;
1769		1917
1770	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	1918	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1771	{	1919	{
1772	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	1920	int feed_count = 0;
1773		1921
1774	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	1922	do
1775
1776	/* first reschedule or stop timer */
1777	if (w->reschedule_cb)
1778	{	1923	{
		1924	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1925
		1926	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		1927
		1928	/* first reschedule or stop timer */
		1929	if (w->reschedule_cb)
		1930	{
1779	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1931	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1780		1932
1781	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));	1933	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1782		1934
1783	ANHE_at_cache (periodics [HEAP0]);	1935	ANHE_at_cache (periodics [HEAP0]);
1784	downheap (periodics, periodiccnt, HEAP0);	1936	downheap (periodics, periodiccnt, HEAP0);
		1937	}
		1938	else if (w->interval)
		1939	{
		1940	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1941	/* if next trigger time is not sufficiently in the future, put it there */
		1942	/* this might happen because of floating point inexactness */
		1943	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1944	{
		1945	ev_at (w) += w->interval;
		1946
		1947	/* if interval is unreasonably low we might still have a time in the past */
		1948	/* so correct this. this will make the periodic very inexact, but the user */
		1949	/* has effectively asked to get triggered more often than possible */
		1950	if (ev_at (w) < ev_rt_now)
		1951	ev_at (w) = ev_rt_now;
		1952	}
		1953
		1954	ANHE_at_cache (periodics [HEAP0]);
		1955	downheap (periodics, periodiccnt, HEAP0);
		1956	}
		1957	else
		1958	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1959
		1960	EV_FREQUENT_CHECK;
		1961	feed_reverse (EV_A_ (W)w);
1785	}	1962	}
1786	else if (w->interval)	1963	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1787	{
1788	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1789	/* if next trigger time is not sufficiently in the future, put it there */
1790	/* this might happen because of floating point inexactness */
1791	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1792	{
1793	ev_at (w) += w->interval;
1794		1964
1795	/* if interval is unreasonably low we might still have a time in the past */
1796	/* so correct this. this will make the periodic very inexact, but the user */
1797	/* has effectively asked to get triggered more often than possible */
1798	if (ev_at (w) < ev_rt_now)
1799	ev_at (w) = ev_rt_now;
1800	}
1801
1802	ANHE_at_cache (periodics [HEAP0]);
1803	downheap (periodics, periodiccnt, HEAP0);
1804	}
1805	else
1806	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1807
1808	EV_FREQUENT_CHECK;
1809	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1965	feed_reverse_done (EV_A_ EV_PERIODIC);
1810	}	1966	}
1811	}	1967	}
1812		1968
		1969	/* simply recalculate all periodics */
		1970	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1813	static void noinline	1971	static void noinline
1814	periodics_reschedule (EV_P)	1972	periodics_reschedule (EV_P)
1815	{	1973	{
1816	int i;	1974	int i;
1817		1975
…		…
1830		1988
1831	reheap (periodics, periodiccnt);	1989	reheap (periodics, periodiccnt);
1832	}	1990	}
1833	#endif	1991	#endif
1834		1992
1835	void inline_speed	1993	/* adjust all timers by a given offset */
		1994	static void noinline
		1995	timers_reschedule (EV_P_ ev_tstamp adjust)
		1996	{
		1997	int i;
		1998
		1999	for (i = 0; i < timercnt; ++i)
		2000	{
		2001	ANHE *he = timers + i + HEAP0;
		2002	ANHE_w (*he)->at += adjust;
		2003	ANHE_at_cache (*he);
		2004	}
		2005	}
		2006
		2007	/* fetch new monotonic and realtime times from the kernel */
		2008	/* also detetc if there was a timejump, and act accordingly */
		2009	inline_speed void
1836	time_update (EV_P_ ev_tstamp max_block)	2010	time_update (EV_P_ ev_tstamp max_block)
1837	{	2011	{
1838	int i;
1839
1840	#if EV_USE_MONOTONIC	2012	#if EV_USE_MONOTONIC
1841	if (expect_true (have_monotonic))	2013	if (expect_true (have_monotonic))
1842	{	2014	{
		2015	int i;
1843	ev_tstamp odiff = rtmn_diff;	2016	ev_tstamp odiff = rtmn_diff;
1844		2017
1845	mn_now = get_clock ();	2018	mn_now = get_clock ();
1846		2019
1847	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2020	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1873	ev_rt_now = ev_time ();	2046	ev_rt_now = ev_time ();
1874	mn_now = get_clock ();	2047	mn_now = get_clock ();
1875	now_floor = mn_now;	2048	now_floor = mn_now;
1876	}	2049	}
1877		2050
		2051	/* no timer adjustment, as the monotonic clock doesn't jump */
		2052	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1878	# if EV_PERIODIC_ENABLE	2053	# if EV_PERIODIC_ENABLE
1879	periodics_reschedule (EV_A);	2054	periodics_reschedule (EV_A);
1880	# endif	2055	# endif
1881	/* no timer adjustment, as the monotonic clock doesn't jump */
1882	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1883	}	2056	}
1884	else	2057	else
1885	#endif	2058	#endif
1886	{	2059	{
1887	ev_rt_now = ev_time ();	2060	ev_rt_now = ev_time ();
1888		2061
1889	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2062	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1890	{	2063	{
		2064	/* adjust timers. this is easy, as the offset is the same for all of them */
		2065	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1891	#if EV_PERIODIC_ENABLE	2066	#if EV_PERIODIC_ENABLE
1892	periodics_reschedule (EV_A);	2067	periodics_reschedule (EV_A);
1893	#endif	2068	#endif
1894	/* adjust timers. this is easy, as the offset is the same for all of them */
1895	for (i = 0; i < timercnt; ++i)
1896	{
1897	ANHE *he = timers + i + HEAP0;
1898	ANHE_w (*he)->at += ev_rt_now - mn_now;
1899	ANHE_at_cache (*he);
1900	}
1901	}	2069	}
1902		2070
1903	mn_now = ev_rt_now;	2071	mn_now = ev_rt_now;
1904	}	2072	}
1905	}	2073	}
1906		2074
1907	void	2075	void
1908	ev_ref (EV_P)
1909	{
1910	++activecnt;
1911	}
1912
1913	void
1914	ev_unref (EV_P)
1915	{
1916	--activecnt;
1917	}
1918
1919	void
1920	ev_now_update (EV_P)
1921	{
1922	time_update (EV_A_ 1e100);
1923	}
1924
1925	static int loop_done;
1926
1927	void
1928	ev_loop (EV_P_ int flags)	2076	ev_loop (EV_P_ int flags)
1929	{	2077	{
		2078	#if EV_MINIMAL < 2
		2079	++loop_depth;
		2080	#endif
		2081
1930	loop_done = EVUNLOOP_CANCEL;	2082	loop_done = EVUNLOOP_CANCEL;
1931		2083
1932	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2084	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1933		2085
1934	do	2086	do
1935	{	2087	{
1936	#if EV_VERIFY >= 2	2088	#if EV_VERIFY >= 2
1937	ev_loop_verify (EV_A);	2089	ev_loop_verify (EV_A);
…		…
1950	/* we might have forked, so queue fork handlers */	2102	/* we might have forked, so queue fork handlers */
1951	if (expect_false (postfork))	2103	if (expect_false (postfork))
1952	if (forkcnt)	2104	if (forkcnt)
1953	{	2105	{
1954	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2106	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1955	call_pending (EV_A);	2107	EV_INVOKE_PENDING;
1956	}	2108	}
1957	#endif	2109	#endif
1958		2110
1959	/* queue prepare watchers (and execute them) */	2111	/* queue prepare watchers (and execute them) */
1960	if (expect_false (preparecnt))	2112	if (expect_false (preparecnt))
1961	{	2113	{
1962	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2114	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1963	call_pending (EV_A);	2115	EV_INVOKE_PENDING;
1964	}	2116	}
1965
1966	if (expect_false (!activecnt))
1967	break;
1968		2117
1969	/* we might have forked, so reify kernel state if necessary */	2118	/* we might have forked, so reify kernel state if necessary */
1970	if (expect_false (postfork))	2119	if (expect_false (postfork))
1971	loop_fork (EV_A);	2120	loop_fork (EV_A);
1972		2121
…		…
1978	ev_tstamp waittime = 0.;	2127	ev_tstamp waittime = 0.;
1979	ev_tstamp sleeptime = 0.;	2128	ev_tstamp sleeptime = 0.;
1980		2129
1981	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2130	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1982	{	2131	{
		2132	/* remember old timestamp for io_blocktime calculation */
		2133	ev_tstamp prev_mn_now = mn_now;
		2134
1983	/* update time to cancel out callback processing overhead */	2135	/* update time to cancel out callback processing overhead */
1984	time_update (EV_A_ 1e100);	2136	time_update (EV_A_ 1e100);
1985		2137
1986	waittime = MAX_BLOCKTIME;	2138	waittime = MAX_BLOCKTIME;
1987		2139
…		…
1997	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2149	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1998	if (waittime > to) waittime = to;	2150	if (waittime > to) waittime = to;
1999	}	2151	}
2000	#endif	2152	#endif
2001		2153
		2154	/* don't let timeouts decrease the waittime below timeout_blocktime */
2002	if (expect_false (waittime < timeout_blocktime))	2155	if (expect_false (waittime < timeout_blocktime))
2003	waittime = timeout_blocktime;	2156	waittime = timeout_blocktime;
2004		2157
2005	sleeptime = waittime - backend_fudge;	2158	/* extra check because io_blocktime is commonly 0 */
2006
2007	if (expect_true (sleeptime > io_blocktime))	2159	if (expect_false (io_blocktime))
2008	sleeptime = io_blocktime;
2009
2010	if (sleeptime)
2011	{	2160	{
		2161	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2162
		2163	if (sleeptime > waittime - backend_fudge)
		2164	sleeptime = waittime - backend_fudge;
		2165
		2166	if (expect_true (sleeptime > 0.))
		2167	{
2012	ev_sleep (sleeptime);	2168	ev_sleep (sleeptime);
2013	waittime -= sleeptime;	2169	waittime -= sleeptime;
		2170	}
2014	}	2171	}
2015	}	2172	}
2016		2173
		2174	#if EV_MINIMAL < 2
2017	++loop_count;	2175	++loop_count;
		2176	#endif
2018	backend_poll (EV_A_ waittime);	2177	backend_poll (EV_A_ waittime);
2019		2178
2020	/* update ev_rt_now, do magic */	2179	/* update ev_rt_now, do magic */
2021	time_update (EV_A_ waittime + sleeptime);	2180	time_update (EV_A_ waittime + sleeptime);
2022	}	2181	}
…		…
2034		2193
2035	/* queue check watchers, to be executed first */	2194	/* queue check watchers, to be executed first */
2036	if (expect_false (checkcnt))	2195	if (expect_false (checkcnt))
2037	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2196	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2038		2197
2039	call_pending (EV_A);	2198	EV_INVOKE_PENDING;
2040	}	2199	}
2041	while (expect_true (	2200	while (expect_true (
2042	activecnt	2201	activecnt
2043	&& !loop_done	2202	&& !loop_done
2044	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2203	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2045	));	2204	));
2046		2205
2047	if (loop_done == EVUNLOOP_ONE)	2206	if (loop_done == EVUNLOOP_ONE)
2048	loop_done = EVUNLOOP_CANCEL;	2207	loop_done = EVUNLOOP_CANCEL;
		2208
		2209	#if EV_MINIMAL < 2
		2210	--loop_depth;
		2211	#endif
2049	}	2212	}
2050		2213
2051	void	2214	void
2052	ev_unloop (EV_P_ int how)	2215	ev_unloop (EV_P_ int how)
2053	{	2216	{
2054	loop_done = how;	2217	loop_done = how;
2055	}	2218	}
2056		2219
		2220	void
		2221	ev_ref (EV_P)
		2222	{
		2223	++activecnt;
		2224	}
		2225
		2226	void
		2227	ev_unref (EV_P)
		2228	{
		2229	--activecnt;
		2230	}
		2231
		2232	void
		2233	ev_now_update (EV_P)
		2234	{
		2235	time_update (EV_A_ 1e100);
		2236	}
		2237
		2238	void
		2239	ev_suspend (EV_P)
		2240	{
		2241	ev_now_update (EV_A);
		2242	}
		2243
		2244	void
		2245	ev_resume (EV_P)
		2246	{
		2247	ev_tstamp mn_prev = mn_now;
		2248
		2249	ev_now_update (EV_A);
		2250	timers_reschedule (EV_A_ mn_now - mn_prev);
		2251	#if EV_PERIODIC_ENABLE
		2252	/* TODO: really do this? */
		2253	periodics_reschedule (EV_A);
		2254	#endif
		2255	}
		2256
2057	/*****************************************************************************/	2257	/*****************************************************************************/
		2258	/* singly-linked list management, used when the expected list length is short */
2058		2259
2059	void inline_size	2260	inline_size void
2060	wlist_add (WL *head, WL elem)	2261	wlist_add (WL *head, WL elem)
2061	{	2262	{
2062	elem->next = *head;	2263	elem->next = *head;
2063	*head = elem;	2264	*head = elem;
2064	}	2265	}
2065		2266
2066	void inline_size	2267	inline_size void
2067	wlist_del (WL *head, WL elem)	2268	wlist_del (WL *head, WL elem)
2068	{	2269	{
2069	while (*head)	2270	while (*head)
2070	{	2271	{
2071	if (*head == elem)	2272	if (*head == elem)
…		…
2076		2277
2077	head = &(*head)->next;	2278	head = &(*head)->next;
2078	}	2279	}
2079	}	2280	}
2080		2281
2081	void inline_speed	2282	/* internal, faster, version of ev_clear_pending */
		2283	inline_speed void
2082	clear_pending (EV_P_ W w)	2284	clear_pending (EV_P_ W w)
2083	{	2285	{
2084	if (w->pending)	2286	if (w->pending)
2085	{	2287	{
2086	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2288	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2087	w->pending = 0;	2289	w->pending = 0;
2088	}	2290	}
2089	}	2291	}
2090		2292
2091	int	2293	int
…		…
2095	int pending = w_->pending;	2297	int pending = w_->pending;
2096		2298
2097	if (expect_true (pending))	2299	if (expect_true (pending))
2098	{	2300	{
2099	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2301	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2302	p->w = (W)&pending_w;
2100	w_->pending = 0;	2303	w_->pending = 0;
2101	p->w = 0;
2102	return p->events;	2304	return p->events;
2103	}	2305	}
2104	else	2306	else
2105	return 0;	2307	return 0;
2106	}	2308	}
2107		2309
2108	void inline_size	2310	inline_size void
2109	pri_adjust (EV_P_ W w)	2311	pri_adjust (EV_P_ W w)
2110	{	2312	{
2111	int pri = w->priority;	2313	int pri = ev_priority (w);
2112	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2314	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2113	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2315	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2114	w->priority = pri;	2316	ev_set_priority (w, pri);
2115	}	2317	}
2116		2318
2117	void inline_speed	2319	inline_speed void
2118	ev_start (EV_P_ W w, int active)	2320	ev_start (EV_P_ W w, int active)
2119	{	2321	{
2120	pri_adjust (EV_A_ w);	2322	pri_adjust (EV_A_ w);
2121	w->active = active;	2323	w->active = active;
2122	ev_ref (EV_A);	2324	ev_ref (EV_A);
2123	}	2325	}
2124		2326
2125	void inline_size	2327	inline_size void
2126	ev_stop (EV_P_ W w)	2328	ev_stop (EV_P_ W w)
2127	{	2329	{
2128	ev_unref (EV_A);	2330	ev_unref (EV_A);
2129	w->active = 0;	2331	w->active = 0;
2130	}	2332	}
…		…
2137	int fd = w->fd;	2339	int fd = w->fd;
2138		2340
2139	if (expect_false (ev_is_active (w)))	2341	if (expect_false (ev_is_active (w)))
2140	return;	2342	return;
2141		2343
2142	assert (("ev_io_start called with negative fd", fd >= 0));	2344	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2345	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2143		2346
2144	EV_FREQUENT_CHECK;	2347	EV_FREQUENT_CHECK;
2145		2348
2146	ev_start (EV_A_ (W)w, 1);	2349	ev_start (EV_A_ (W)w, 1);
2147	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2350	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2148	wlist_add (&anfds[fd].head, (WL)w);	2351	wlist_add (&anfds[fd].head, (WL)w);
2149		2352
2150	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2353	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
2151	w->events &= ~EV_IOFDSET;	2354	w->events &= ~EV__IOFDSET;
2152		2355
2153	EV_FREQUENT_CHECK;	2356	EV_FREQUENT_CHECK;
2154	}	2357	}
2155		2358
2156	void noinline	2359	void noinline
…		…
2158	{	2361	{
2159	clear_pending (EV_A_ (W)w);	2362	clear_pending (EV_A_ (W)w);
2160	if (expect_false (!ev_is_active (w)))	2363	if (expect_false (!ev_is_active (w)))
2161	return;	2364	return;
2162		2365
2163	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2366	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2164		2367
2165	EV_FREQUENT_CHECK;	2368	EV_FREQUENT_CHECK;
2166		2369
2167	wlist_del (&anfds[w->fd].head, (WL)w);	2370	wlist_del (&anfds[w->fd].head, (WL)w);
2168	ev_stop (EV_A_ (W)w);	2371	ev_stop (EV_A_ (W)w);
…		…
2178	if (expect_false (ev_is_active (w)))	2381	if (expect_false (ev_is_active (w)))
2179	return;	2382	return;
2180		2383
2181	ev_at (w) += mn_now;	2384	ev_at (w) += mn_now;
2182		2385
2183	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2386	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2184		2387
2185	EV_FREQUENT_CHECK;	2388	EV_FREQUENT_CHECK;
2186		2389
2187	++timercnt;	2390	++timercnt;
2188	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);	2391	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
…		…
2191	ANHE_at_cache (timers [ev_active (w)]);	2394	ANHE_at_cache (timers [ev_active (w)]);
2192	upheap (timers, ev_active (w));	2395	upheap (timers, ev_active (w));
2193		2396
2194	EV_FREQUENT_CHECK;	2397	EV_FREQUENT_CHECK;
2195		2398
2196	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2399	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2197	}	2400	}
2198		2401
2199	void noinline	2402	void noinline
2200	ev_timer_stop (EV_P_ ev_timer *w)	2403	ev_timer_stop (EV_P_ ev_timer *w)
2201	{	2404	{
…		…
2206	EV_FREQUENT_CHECK;	2409	EV_FREQUENT_CHECK;
2207		2410
2208	{	2411	{
2209	int active = ev_active (w);	2412	int active = ev_active (w);
2210		2413
2211	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2414	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2212		2415
2213	--timercnt;	2416	--timercnt;
2214		2417
2215	if (expect_true (active < timercnt + HEAP0))	2418	if (expect_true (active < timercnt + HEAP0))
2216	{	2419	{
…		…
2260		2463
2261	if (w->reschedule_cb)	2464	if (w->reschedule_cb)
2262	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2465	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2263	else if (w->interval)	2466	else if (w->interval)
2264	{	2467	{
2265	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2468	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2266	/* this formula differs from the one in periodic_reify because we do not always round up */	2469	/* this formula differs from the one in periodic_reify because we do not always round up */
2267	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2470	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2268	}	2471	}
2269	else	2472	else
2270	ev_at (w) = w->offset;	2473	ev_at (w) = w->offset;
…		…
2278	ANHE_at_cache (periodics [ev_active (w)]);	2481	ANHE_at_cache (periodics [ev_active (w)]);
2279	upheap (periodics, ev_active (w));	2482	upheap (periodics, ev_active (w));
2280		2483
2281	EV_FREQUENT_CHECK;	2484	EV_FREQUENT_CHECK;
2282		2485
2283	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2486	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2284	}	2487	}
2285		2488
2286	void noinline	2489	void noinline
2287	ev_periodic_stop (EV_P_ ev_periodic *w)	2490	ev_periodic_stop (EV_P_ ev_periodic *w)
2288	{	2491	{
…		…
2293	EV_FREQUENT_CHECK;	2496	EV_FREQUENT_CHECK;
2294		2497
2295	{	2498	{
2296	int active = ev_active (w);	2499	int active = ev_active (w);
2297		2500
2298	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2501	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2299		2502
2300	--periodiccnt;	2503	--periodiccnt;
2301		2504
2302	if (expect_true (active < periodiccnt + HEAP0))	2505	if (expect_true (active < periodiccnt + HEAP0))
2303	{	2506	{
…		…
2326		2529
2327	void noinline	2530	void noinline
2328	ev_signal_start (EV_P_ ev_signal *w)	2531	ev_signal_start (EV_P_ ev_signal *w)
2329	{	2532	{
2330	#if EV_MULTIPLICITY	2533	#if EV_MULTIPLICITY
2331	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2534	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2332	#endif	2535	#endif
2333	if (expect_false (ev_is_active (w)))	2536	if (expect_false (ev_is_active (w)))
2334	return;	2537	return;
2335		2538
2336	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2539	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2337		2540
2338	evpipe_init (EV_A);	2541	evpipe_init (EV_A);
2339		2542
2340	EV_FREQUENT_CHECK;	2543	EV_FREQUENT_CHECK;
2341		2544
…		…
2344	sigset_t full, prev;	2547	sigset_t full, prev;
2345	sigfillset (&full);	2548	sigfillset (&full);
2346	sigprocmask (SIG_SETMASK, &full, &prev);	2549	sigprocmask (SIG_SETMASK, &full, &prev);
2347	#endif	2550	#endif
2348		2551
2349	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2552	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2350		2553
2351	#ifndef _WIN32	2554	#ifndef _WIN32
2352	sigprocmask (SIG_SETMASK, &prev, 0);	2555	sigprocmask (SIG_SETMASK, &prev, 0);
2353	#endif	2556	#endif
2354	}	2557	}
…		…
2392		2595
2393	void	2596	void
2394	ev_child_start (EV_P_ ev_child *w)	2597	ev_child_start (EV_P_ ev_child *w)
2395	{	2598	{
2396	#if EV_MULTIPLICITY	2599	#if EV_MULTIPLICITY
2397	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2600	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2398	#endif	2601	#endif
2399	if (expect_false (ev_is_active (w)))	2602	if (expect_false (ev_is_active (w)))
2400	return;	2603	return;
2401		2604
2402	EV_FREQUENT_CHECK;	2605	EV_FREQUENT_CHECK;
…		…
2427	# ifdef _WIN32	2630	# ifdef _WIN32
2428	# undef lstat	2631	# undef lstat
2429	# define lstat(a,b) _stati64 (a,b)	2632	# define lstat(a,b) _stati64 (a,b)
2430	# endif	2633	# endif
2431		2634
2432	#define DEF_STAT_INTERVAL 5.0074891	2635	#define DEF_STAT_INTERVAL 5.0074891
		2636	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2433	#define MIN_STAT_INTERVAL 0.1074891	2637	#define MIN_STAT_INTERVAL 0.1074891
2434		2638
2435	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2639	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2436		2640
2437	#if EV_USE_INOTIFY	2641	#if EV_USE_INOTIFY
2438	# define EV_INOTIFY_BUFSIZE 8192	2642	# define EV_INOTIFY_BUFSIZE 8192
…		…
2442	{	2646	{
2443	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);	2647	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2444		2648
2445	if (w->wd < 0)	2649	if (w->wd < 0)
2446	{	2650	{
		2651	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2447	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2652	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2448		2653
2449	/* monitor some parent directory for speedup hints */	2654	/* monitor some parent directory for speedup hints */
2450	/* note that exceeding the hardcoded limit is not a correctness issue, */	2655	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2451	/* but an efficiency issue only */	2656	/* but an efficiency issue only */
2452	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2657	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2453	{	2658	{
2454	char path [4096];	2659	char path [4096];
2455	strcpy (path, w->path);	2660	strcpy (path, w->path);
…		…
2459	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2664	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2460	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2665	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2461		2666
2462	char *pend = strrchr (path, '/');	2667	char *pend = strrchr (path, '/');
2463		2668
2464	if (!pend)	2669	if (!pend || pend == path)
2465	break; /* whoops, no '/', complain to your admin */	2670	break;
2466		2671
2467	*pend = 0;	2672	*pend = 0;
2468	w->wd = inotify_add_watch (fs_fd, path, mask);	2673	w->wd = inotify_add_watch (fs_fd, path, mask);
2469	}	2674	}
2470	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2675	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2471	}	2676	}
2472	}	2677	}
2473	else
2474	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2475		2678
2476	if (w->wd >= 0)	2679	if (w->wd >= 0)
		2680	{
2477	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2681	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2682
		2683	/* now local changes will be tracked by inotify, but remote changes won't */
		2684	/* unless the filesystem it known to be local, we therefore still poll */
		2685	/* also do poll on <2.6.25, but with normal frequency */
		2686	struct statfs sfs;
		2687
		2688	if (fs_2625 && !statfs (w->path, &sfs))
		2689	if (sfs.f_type == 0x1373 /* devfs */
		2690	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2691	|| sfs.f_type == 0x3153464a /* jfs */
		2692	|| sfs.f_type == 0x52654973 /* reiser3 */
		2693	|| sfs.f_type == 0x01021994 /* tempfs */
		2694	|| sfs.f_type == 0x58465342 /* xfs */)
		2695	return;
		2696
		2697	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2698	ev_timer_again (EV_A_ &w->timer);
		2699	}
2478	}	2700	}
2479		2701
2480	static void noinline	2702	static void noinline
2481	infy_del (EV_P_ ev_stat *w)	2703	infy_del (EV_P_ ev_stat *w)
2482	{	2704	{
…		…
2496		2718
2497	static void noinline	2719	static void noinline
2498	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2720	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2499	{	2721	{
2500	if (slot < 0)	2722	if (slot < 0)
2501	/* overflow, need to check for all hahs slots */	2723	/* overflow, need to check for all hash slots */
2502	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2724	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2503	infy_wd (EV_A_ slot, wd, ev);	2725	infy_wd (EV_A_ slot, wd, ev);
2504	else	2726	else
2505	{	2727	{
2506	WL w_;	2728	WL w_;
…		…
2512		2734
2513	if (w->wd == wd || wd == -1)	2735	if (w->wd == wd || wd == -1)
2514	{	2736	{
2515	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2737	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2516	{	2738	{
		2739	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2517	w->wd = -1;	2740	w->wd = -1;
2518	infy_add (EV_A_ w); /* re-add, no matter what */	2741	infy_add (EV_A_ w); /* re-add, no matter what */
2519	}	2742	}
2520		2743
2521	stat_timer_cb (EV_A_ &w->timer, 0);	2744	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2534		2757
2535	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2758	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2536	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2759	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2537	}	2760	}
2538		2761
2539	void inline_size	2762	inline_size void
		2763	check_2625 (EV_P)
		2764	{
		2765	/* kernels < 2.6.25 are borked
		2766	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2767	*/
		2768	struct utsname buf;
		2769	int major, minor, micro;
		2770
		2771	if (uname (&buf))
		2772	return;
		2773
		2774	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2775	return;
		2776
		2777	if (major < 2
		2778	|| (major == 2 && minor < 6)
		2779	|| (major == 2 && minor == 6 && micro < 25))
		2780	return;
		2781
		2782	fs_2625 = 1;
		2783	}
		2784
		2785	inline_size void
2540	infy_init (EV_P)	2786	infy_init (EV_P)
2541	{	2787	{
2542	if (fs_fd != -2)	2788	if (fs_fd != -2)
2543	return;	2789	return;
		2790
		2791	fs_fd = -1;
		2792
		2793	check_2625 (EV_A);
2544		2794
2545	fs_fd = inotify_init ();	2795	fs_fd = inotify_init ();
2546		2796
2547	if (fs_fd >= 0)	2797	if (fs_fd >= 0)
2548	{	2798	{
…		…
2550	ev_set_priority (&fs_w, EV_MAXPRI);	2800	ev_set_priority (&fs_w, EV_MAXPRI);
2551	ev_io_start (EV_A_ &fs_w);	2801	ev_io_start (EV_A_ &fs_w);
2552	}	2802	}
2553	}	2803	}
2554		2804
2555	void inline_size	2805	inline_size void
2556	infy_fork (EV_P)	2806	infy_fork (EV_P)
2557	{	2807	{
2558	int slot;	2808	int slot;
2559		2809
2560	if (fs_fd < 0)	2810	if (fs_fd < 0)
…		…
2576	w->wd = -1;	2826	w->wd = -1;
2577		2827
2578	if (fs_fd >= 0)	2828	if (fs_fd >= 0)
2579	infy_add (EV_A_ w); /* re-add, no matter what */	2829	infy_add (EV_A_ w); /* re-add, no matter what */
2580	else	2830	else
2581	ev_timer_start (EV_A_ &w->timer);	2831	ev_timer_again (EV_A_ &w->timer);
2582	}	2832	}
2583
2584	}	2833	}
2585	}	2834	}
2586		2835
2587	#endif	2836	#endif
2588		2837
…		…
2624	|| w->prev.st_atime != w->attr.st_atime	2873	|| w->prev.st_atime != w->attr.st_atime
2625	|| w->prev.st_mtime != w->attr.st_mtime	2874	|| w->prev.st_mtime != w->attr.st_mtime
2626	|| w->prev.st_ctime != w->attr.st_ctime	2875	|| w->prev.st_ctime != w->attr.st_ctime
2627	) {	2876	) {
2628	#if EV_USE_INOTIFY	2877	#if EV_USE_INOTIFY
		2878	if (fs_fd >= 0)
		2879	{
2629	infy_del (EV_A_ w);	2880	infy_del (EV_A_ w);
2630	infy_add (EV_A_ w);	2881	infy_add (EV_A_ w);
2631	ev_stat_stat (EV_A_ w); /* avoid race... */	2882	ev_stat_stat (EV_A_ w); /* avoid race... */
		2883	}
2632	#endif	2884	#endif
2633		2885
2634	ev_feed_event (EV_A_ w, EV_STAT);	2886	ev_feed_event (EV_A_ w, EV_STAT);
2635	}	2887	}
2636	}	2888	}
…		…
2639	ev_stat_start (EV_P_ ev_stat *w)	2891	ev_stat_start (EV_P_ ev_stat *w)
2640	{	2892	{
2641	if (expect_false (ev_is_active (w)))	2893	if (expect_false (ev_is_active (w)))
2642	return;	2894	return;
2643		2895
2644	/* since we use memcmp, we need to clear any padding data etc. */
2645	memset (&w->prev, 0, sizeof (ev_statdata));
2646	memset (&w->attr, 0, sizeof (ev_statdata));
2647
2648	ev_stat_stat (EV_A_ w);	2896	ev_stat_stat (EV_A_ w);
2649		2897
		2898	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2650	if (w->interval < MIN_STAT_INTERVAL)	2899	w->interval = MIN_STAT_INTERVAL;
2651	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2652		2900
2653	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2901	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2654	ev_set_priority (&w->timer, ev_priority (w));	2902	ev_set_priority (&w->timer, ev_priority (w));
2655		2903
2656	#if EV_USE_INOTIFY	2904	#if EV_USE_INOTIFY
2657	infy_init (EV_A);	2905	infy_init (EV_A);
2658		2906
2659	if (fs_fd >= 0)	2907	if (fs_fd >= 0)
2660	infy_add (EV_A_ w);	2908	infy_add (EV_A_ w);
2661	else	2909	else
2662	#endif	2910	#endif
2663	ev_timer_start (EV_A_ &w->timer);	2911	ev_timer_again (EV_A_ &w->timer);
2664		2912
2665	ev_start (EV_A_ (W)w, 1);	2913	ev_start (EV_A_ (W)w, 1);
2666		2914
2667	EV_FREQUENT_CHECK;	2915	EV_FREQUENT_CHECK;
2668	}	2916	}
…		…
2843	static void	3091	static void
2844	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)	3092	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2845	{	3093	{
2846	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));	3094	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2847		3095
		3096	ev_embed_stop (EV_A_ w);
		3097
2848	{	3098	{
2849	struct ev_loop *loop = w->other;	3099	struct ev_loop *loop = w->other;
2850		3100
2851	ev_loop_fork (EV_A);	3101	ev_loop_fork (EV_A);
		3102	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2852	}	3103	}
		3104
		3105	ev_embed_start (EV_A_ w);
2853	}	3106	}
2854		3107
2855	#if 0	3108	#if 0
2856	static void	3109	static void
2857	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3110	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
…		…
2866	if (expect_false (ev_is_active (w)))	3119	if (expect_false (ev_is_active (w)))
2867	return;	3120	return;
2868		3121
2869	{	3122	{
2870	struct ev_loop *loop = w->other;	3123	struct ev_loop *loop = w->other;
2871	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3124	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2872	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3125	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2873	}	3126	}
2874		3127
2875	EV_FREQUENT_CHECK;	3128	EV_FREQUENT_CHECK;
2876		3129
…		…
3059	ev_timer_set (&once->to, timeout, 0.);	3312	ev_timer_set (&once->to, timeout, 0.);
3060	ev_timer_start (EV_A_ &once->to);	3313	ev_timer_start (EV_A_ &once->to);
3061	}	3314	}
3062	}	3315	}
3063		3316
		3317	/*****************************************************************************/
		3318
		3319	#if EV_WALK_ENABLE
		3320	void
		3321	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3322	{
		3323	int i, j;
		3324	ev_watcher_list *wl, *wn;
		3325
		3326	if (types & (EV_IO | EV_EMBED))
		3327	for (i = 0; i < anfdmax; ++i)
		3328	for (wl = anfds [i].head; wl; )
		3329	{
		3330	wn = wl->next;
		3331
		3332	#if EV_EMBED_ENABLE
		3333	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3334	{
		3335	if (types & EV_EMBED)
		3336	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3337	}
		3338	else
		3339	#endif
		3340	#if EV_USE_INOTIFY
		3341	if (ev_cb ((ev_io *)wl) == infy_cb)
		3342	;
		3343	else
		3344	#endif
		3345	if ((ev_io *)wl != &pipe_w)
		3346	if (types & EV_IO)
		3347	cb (EV_A_ EV_IO, wl);
		3348
		3349	wl = wn;
		3350	}
		3351
		3352	if (types & (EV_TIMER | EV_STAT))
		3353	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3354	#if EV_STAT_ENABLE
		3355	/*TODO: timer is not always active*/
		3356	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3357	{
		3358	if (types & EV_STAT)
		3359	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3360	}
		3361	else
		3362	#endif
		3363	if (types & EV_TIMER)
		3364	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3365
		3366	#if EV_PERIODIC_ENABLE
		3367	if (types & EV_PERIODIC)
		3368	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3369	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3370	#endif
		3371
		3372	#if EV_IDLE_ENABLE
		3373	if (types & EV_IDLE)
		3374	for (j = NUMPRI; i--; )
		3375	for (i = idlecnt [j]; i--; )
		3376	cb (EV_A_ EV_IDLE, idles [j][i]);
		3377	#endif
		3378
		3379	#if EV_FORK_ENABLE
		3380	if (types & EV_FORK)
		3381	for (i = forkcnt; i--; )
		3382	if (ev_cb (forks [i]) != embed_fork_cb)
		3383	cb (EV_A_ EV_FORK, forks [i]);
		3384	#endif
		3385
		3386	#if EV_ASYNC_ENABLE
		3387	if (types & EV_ASYNC)
		3388	for (i = asynccnt; i--; )
		3389	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3390	#endif
		3391
		3392	if (types & EV_PREPARE)
		3393	for (i = preparecnt; i--; )
		3394	#if EV_EMBED_ENABLE
		3395	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3396	#endif
		3397	cb (EV_A_ EV_PREPARE, prepares [i]);
		3398
		3399	if (types & EV_CHECK)
		3400	for (i = checkcnt; i--; )
		3401	cb (EV_A_ EV_CHECK, checks [i]);
		3402
		3403	if (types & EV_SIGNAL)
		3404	for (i = 0; i < signalmax; ++i)
		3405	for (wl = signals [i].head; wl; )
		3406	{
		3407	wn = wl->next;
		3408	cb (EV_A_ EV_SIGNAL, wl);
		3409	wl = wn;
		3410	}
		3411
		3412	if (types & EV_CHILD)
		3413	for (i = EV_PID_HASHSIZE; i--; )
		3414	for (wl = childs [i]; wl; )
		3415	{
		3416	wn = wl->next;
		3417	cb (EV_A_ EV_CHILD, wl);
		3418	wl = wn;
		3419	}
		3420	/* EV_STAT 0x00001000 /* stat data changed */
		3421	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3422	}
		3423	#endif
		3424
3064	#if EV_MULTIPLICITY	3425	#if EV_MULTIPLICITY
3065	#include "ev_wrap.h"	3426	#include "ev_wrap.h"
3066	#endif	3427	#endif
3067		3428
3068	#ifdef __cplusplus	3429	#ifdef __cplusplus

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