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Comparing libev/ev.c (file contents):
Revision 1.251 by root, Thu May 22 03:42:34 2008 UTC vs.
Revision 1.302 by root, Thu Jul 16 15:08:08 2009 UTC

1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without modifica-	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* tion, are permitted provided that the following conditions are met:	8	* tion, are permitted provided that the following conditions are met:
9	*	9	*
…		…
47	# include EV_CONFIG_H	47	# include EV_CONFIG_H
48	# else	48	# else
49	# include "config.h"	49	# include "config.h"
50	# endif	50	# endif
51		51
		52	# if HAVE_CLOCK_SYSCALL
		53	# ifndef EV_USE_CLOCK_SYSCALL
		54	# define EV_USE_CLOCK_SYSCALL 1
		55	# ifndef EV_USE_REALTIME
		56	# define EV_USE_REALTIME 0
		57	# endif
		58	# ifndef EV_USE_MONOTONIC
		59	# define EV_USE_MONOTONIC 1
		60	# endif
		61	# endif
		62	# elif !defined(EV_USE_CLOCK_SYSCALL)
		63	# define EV_USE_CLOCK_SYSCALL 0
		64	# endif
		65
52	# if HAVE_CLOCK_GETTIME	66	# if HAVE_CLOCK_GETTIME
53	# ifndef EV_USE_MONOTONIC	67	# ifndef EV_USE_MONOTONIC
54	# define EV_USE_MONOTONIC 1	68	# define EV_USE_MONOTONIC 1
55	# endif	69	# endif
56	# ifndef EV_USE_REALTIME	70	# ifndef EV_USE_REALTIME
57	# define EV_USE_REALTIME 1	71	# define EV_USE_REALTIME 0
58	# endif	72	# endif
59	# else	73	# else
60	# ifndef EV_USE_MONOTONIC	74	# ifndef EV_USE_MONOTONIC
61	# define EV_USE_MONOTONIC 0	75	# define EV_USE_MONOTONIC 0
62	# endif	76	# endif
…		…
154	#ifndef _WIN32	168	#ifndef _WIN32
155	# include <sys/time.h>	169	# include <sys/time.h>
156	# include <sys/wait.h>	170	# include <sys/wait.h>
157	# include <unistd.h>	171	# include <unistd.h>
158	#else	172	#else
		173	# include <io.h>
159	# define WIN32_LEAN_AND_MEAN	174	# define WIN32_LEAN_AND_MEAN
160	# include <windows.h>	175	# include <windows.h>
161	# ifndef EV_SELECT_IS_WINSOCKET	176	# ifndef EV_SELECT_IS_WINSOCKET
162	# define EV_SELECT_IS_WINSOCKET 1	177	# define EV_SELECT_IS_WINSOCKET 1
163	# endif	178	# endif
164	#endif	179	#endif
165		180
166	/* this block tries to deduce configuration from header-defined symbols and defaults */	181	/* this block tries to deduce configuration from header-defined symbols and defaults */
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
…		…
253		284
254	#ifndef EV_HEAP_CACHE_AT	285	#ifndef EV_HEAP_CACHE_AT
255	# define EV_HEAP_CACHE_AT !EV_MINIMAL	286	# define EV_HEAP_CACHE_AT !EV_MINIMAL
256	#endif	287	#endif
257		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
258	/* 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 */
259		304
260	#ifndef CLOCK_MONOTONIC	305	#ifndef CLOCK_MONOTONIC
261	# undef EV_USE_MONOTONIC	306	# undef EV_USE_MONOTONIC
262	# define EV_USE_MONOTONIC 0	307	# define EV_USE_MONOTONIC 0
…		…
277	# include <sys/select.h>	322	# include <sys/select.h>
278	# endif	323	# endif
279	#endif	324	#endif
280		325
281	#if EV_USE_INOTIFY	326	#if EV_USE_INOTIFY
		327	# include <sys/utsname.h>
		328	# include <sys/statfs.h>
282	# 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
283	#endif	335	#endif
284		336
285	#if EV_SELECT_IS_WINSOCKET	337	#if EV_SELECT_IS_WINSOCKET
286	# include <winsock.h>	338	# include <winsock.h>
287	#endif	339	#endif
…		…
339	# define inline_speed static noinline	391	# define inline_speed static noinline
340	#else	392	#else
341	# define inline_speed static inline	393	# define inline_speed static inline
342	#endif	394	#endif
343		395
344	#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
345	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	401	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		402	#endif
346		403
347	#define EMPTY /* required for microsofts broken pseudo-c compiler */	404	#define EMPTY /* required for microsofts broken pseudo-c compiler */
348	#define EMPTY2(a,b) /* used to suppress some warnings */	405	#define EMPTY2(a,b) /* used to suppress some warnings */
349		406
350	typedef ev_watcher *W;	407	typedef ev_watcher *W;
…		…
352	typedef ev_watcher_time *WT;	409	typedef ev_watcher_time *WT;
353		410
354	#define ev_active(w) ((W)(w))->active	411	#define ev_active(w) ((W)(w))->active
355	#define ev_at(w) ((WT)(w))->at	412	#define ev_at(w) ((WT)(w))->at
356		413
357	#if EV_USE_MONOTONIC	414	#if EV_USE_REALTIME
358	/* 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 */
359	/* 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
360	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? */
361	#endif	422	#endif
362		423
363	#ifdef _WIN32	424	#ifdef _WIN32
364	# include "ev_win32.c"	425	# include "ev_win32.c"
…		…
373	{	434	{
374	syserr_cb = cb;	435	syserr_cb = cb;
375	}	436	}
376		437
377	static void noinline	438	static void noinline
378	syserr (const char *msg)	439	ev_syserr (const char *msg)
379	{	440	{
380	if (!msg)	441	if (!msg)
381	msg = "(libev) system error";	442	msg = "(libev) system error";
382		443
383	if (syserr_cb)	444	if (syserr_cb)
…		…
429	#define ev_malloc(size) ev_realloc (0, (size))	490	#define ev_malloc(size) ev_realloc (0, (size))
430	#define ev_free(ptr) ev_realloc ((ptr), 0)	491	#define ev_free(ptr) ev_realloc ((ptr), 0)
431		492
432	/*****************************************************************************/	493	/*****************************************************************************/
433		494
		495	/* set in reify when reification needed */
		496	#define EV_ANFD_REIFY 1
		497
		498	/* file descriptor info structure */
434	typedef struct	499	typedef struct
435	{	500	{
436	WL head;	501	WL head;
437	unsigned char events;	502	unsigned char events; /* the events watched for */
		503	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
		504	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
438	unsigned char reify;	505	unsigned char unused;
		506	#if EV_USE_EPOLL
		507	unsigned int egen; /* generation counter to counter epoll bugs */
		508	#endif
439	#if EV_SELECT_IS_WINSOCKET	509	#if EV_SELECT_IS_WINSOCKET
440	SOCKET handle;	510	SOCKET handle;
441	#endif	511	#endif
442	} ANFD;	512	} ANFD;
443		513
		514	/* stores the pending event set for a given watcher */
444	typedef struct	515	typedef struct
445	{	516	{
446	W w;	517	W w;
447	int events;	518	int events; /* the pending event set for the given watcher */
448	} ANPENDING;	519	} ANPENDING;
449		520
450	#if EV_USE_INOTIFY	521	#if EV_USE_INOTIFY
451	/* hash table entry per inotify-id */	522	/* hash table entry per inotify-id */
452	typedef struct	523	typedef struct
…		…
455	} ANFS;	526	} ANFS;
456	#endif	527	#endif
457		528
458	/* Heap Entry */	529	/* Heap Entry */
459	#if EV_HEAP_CACHE_AT	530	#if EV_HEAP_CACHE_AT
		531	/* a heap element */
460	typedef struct {	532	typedef struct {
461	ev_tstamp at;	533	ev_tstamp at;
462	WT w;	534	WT w;
463	} ANHE;	535	} ANHE;
464		536
465	#define ANHE_w(he) (he).w /* access watcher, read-write */	537	#define ANHE_w(he) (he).w /* access watcher, read-write */
466	#define ANHE_at(he) (he).at /* access cached at, read-only */	538	#define ANHE_at(he) (he).at /* access cached at, read-only */
467	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */	539	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
468	#else	540	#else
		541	/* a heap element */
469	typedef WT ANHE;	542	typedef WT ANHE;
470		543
471	#define ANHE_w(he) (he)	544	#define ANHE_w(he) (he)
472	#define ANHE_at(he) (he)->at	545	#define ANHE_at(he) (he)->at
473	#define ANHE_at_cache(he)	546	#define ANHE_at_cache(he)
…		…
497		570
498	static int ev_default_loop_ptr;	571	static int ev_default_loop_ptr;
499		572
500	#endif	573	#endif
501		574
		575	#if EV_MINIMAL < 2
		576	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		577	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		578	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		579	#else
		580	# define EV_RELEASE_CB (void)0
		581	# define EV_ACQUIRE_CB (void)0
		582	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		583	#endif
		584
		585	#define EVUNLOOP_RECURSE 0x80
		586
502	/*****************************************************************************/	587	/*****************************************************************************/
503		588
		589	#ifndef EV_HAVE_EV_TIME
504	ev_tstamp	590	ev_tstamp
505	ev_time (void)	591	ev_time (void)
506	{	592	{
507	#if EV_USE_REALTIME	593	#if EV_USE_REALTIME
		594	if (expect_true (have_realtime))
		595	{
508	struct timespec ts;	596	struct timespec ts;
509	clock_gettime (CLOCK_REALTIME, &ts);	597	clock_gettime (CLOCK_REALTIME, &ts);
510	return ts.tv_sec + ts.tv_nsec * 1e-9;	598	return ts.tv_sec + ts.tv_nsec * 1e-9;
511	#else	599	}
		600	#endif
		601
512	struct timeval tv;	602	struct timeval tv;
513	gettimeofday (&tv, 0);	603	gettimeofday (&tv, 0);
514	return tv.tv_sec + tv.tv_usec * 1e-6;	604	return tv.tv_sec + tv.tv_usec * 1e-6;
515	#endif
516	}	605	}
		606	#endif
517		607
518	ev_tstamp inline_size	608	inline_size ev_tstamp
519	get_clock (void)	609	get_clock (void)
520	{	610	{
521	#if EV_USE_MONOTONIC	611	#if EV_USE_MONOTONIC
522	if (expect_true (have_monotonic))	612	if (expect_true (have_monotonic))
523	{	613	{
…		…
556	struct timeval tv;	646	struct timeval tv;
557		647
558	tv.tv_sec = (time_t)delay;	648	tv.tv_sec = (time_t)delay;
559	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	649	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
560		650
		651	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		652	/* something not guaranteed by newer posix versions, but guaranteed */
		653	/* by older ones */
561	select (0, 0, 0, 0, &tv);	654	select (0, 0, 0, 0, &tv);
562	#endif	655	#endif
563	}	656	}
564	}	657	}
565		658
566	/*****************************************************************************/	659	/*****************************************************************************/
567		660
568	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	661	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
569		662
570	int inline_size	663	/* find a suitable new size for the given array, */
		664	/* hopefully by rounding to a ncie-to-malloc size */
		665	inline_size int
571	array_nextsize (int elem, int cur, int cnt)	666	array_nextsize (int elem, int cur, int cnt)
572	{	667	{
573	int ncur = cur + 1;	668	int ncur = cur + 1;
574		669
575	do	670	do
…		…
592	array_realloc (int elem, void *base, int *cur, int cnt)	687	array_realloc (int elem, void *base, int *cur, int cnt)
593	{	688	{
594	*cur = array_nextsize (elem, *cur, cnt);	689	*cur = array_nextsize (elem, *cur, cnt);
595	return ev_realloc (base, elem * *cur);	690	return ev_realloc (base, elem * *cur);
596	}	691	}
		692
		693	#define array_init_zero(base,count) \
		694	memset ((void *)(base), 0, sizeof (*(base)) * (count))
597		695
598	#define array_needsize(type,base,cur,cnt,init) \	696	#define array_needsize(type,base,cur,cnt,init) \
599	if (expect_false ((cnt) > (cur))) \	697	if (expect_false ((cnt) > (cur))) \
600	{ \	698	{ \
601	int ocur_ = (cur); \	699	int ocur_ = (cur); \
…		…
613	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	711	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
614	}	712	}
615	#endif	713	#endif
616		714
617	#define array_free(stem, idx) \	715	#define array_free(stem, idx) \
618	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	716	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
619		717
620	/*****************************************************************************/	718	/*****************************************************************************/
		719
		720	/* dummy callback for pending events */
		721	static void noinline
		722	pendingcb (EV_P_ ev_prepare *w, int revents)
		723	{
		724	}
621		725
622	void noinline	726	void noinline
623	ev_feed_event (EV_P_ void *w, int revents)	727	ev_feed_event (EV_P_ void *w, int revents)
624	{	728	{
625	W w_ = (W)w;	729	W w_ = (W)w;
…		…
634	pendings [pri][w_->pending - 1].w = w_;	738	pendings [pri][w_->pending - 1].w = w_;
635	pendings [pri][w_->pending - 1].events = revents;	739	pendings [pri][w_->pending - 1].events = revents;
636	}	740	}
637	}	741	}
638		742
639	void inline_speed	743	inline_speed void
		744	feed_reverse (EV_P_ W w)
		745	{
		746	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		747	rfeeds [rfeedcnt++] = w;
		748	}
		749
		750	inline_size void
		751	feed_reverse_done (EV_P_ int revents)
		752	{
		753	do
		754	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		755	while (rfeedcnt);
		756	}
		757
		758	inline_speed void
640	queue_events (EV_P_ W *events, int eventcnt, int type)	759	queue_events (EV_P_ W *events, int eventcnt, int type)
641	{	760	{
642	int i;	761	int i;
643		762
644	for (i = 0; i < eventcnt; ++i)	763	for (i = 0; i < eventcnt; ++i)
645	ev_feed_event (EV_A_ events [i], type);	764	ev_feed_event (EV_A_ events [i], type);
646	}	765	}
647		766
648	/*****************************************************************************/	767	/*****************************************************************************/
649		768
650	void inline_size	769	inline_speed void
651	anfds_init (ANFD *base, int count)
652	{
653	while (count--)
654	{
655	base->head = 0;
656	base->events = EV_NONE;
657	base->reify = 0;
658
659	++base;
660	}
661	}
662
663	void inline_speed
664	fd_event (EV_P_ int fd, int revents)	770	fd_event_nc (EV_P_ int fd, int revents)
665	{	771	{
666	ANFD *anfd = anfds + fd;	772	ANFD *anfd = anfds + fd;
667	ev_io *w;	773	ev_io *w;
668		774
669	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	775	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
673	if (ev)	779	if (ev)
674	ev_feed_event (EV_A_ (W)w, ev);	780	ev_feed_event (EV_A_ (W)w, ev);
675	}	781	}
676	}	782	}
677		783
		784	/* do not submit kernel events for fds that have reify set */
		785	/* because that means they changed while we were polling for new events */
		786	inline_speed void
		787	fd_event (EV_P_ int fd, int revents)
		788	{
		789	ANFD *anfd = anfds + fd;
		790
		791	if (expect_true (!anfd->reify))
		792	fd_event_nc (EV_A_ fd, revents);
		793	}
		794
678	void	795	void
679	ev_feed_fd_event (EV_P_ int fd, int revents)	796	ev_feed_fd_event (EV_P_ int fd, int revents)
680	{	797	{
681	if (fd >= 0 && fd < anfdmax)	798	if (fd >= 0 && fd < anfdmax)
682	fd_event (EV_A_ fd, revents);	799	fd_event_nc (EV_A_ fd, revents);
683	}	800	}
684		801
685	void inline_size	802	/* make sure the external fd watch events are in-sync */
		803	/* with the kernel/libev internal state */
		804	inline_size void
686	fd_reify (EV_P)	805	fd_reify (EV_P)
687	{	806	{
688	int i;	807	int i;
689		808
690	for (i = 0; i < fdchangecnt; ++i)	809	for (i = 0; i < fdchangecnt; ++i)
…		…
699	events |= (unsigned char)w->events;	818	events |= (unsigned char)w->events;
700		819
701	#if EV_SELECT_IS_WINSOCKET	820	#if EV_SELECT_IS_WINSOCKET
702	if (events)	821	if (events)
703	{	822	{
704	unsigned long argp;	823	unsigned long arg;
705	#ifdef EV_FD_TO_WIN32_HANDLE	824	#ifdef EV_FD_TO_WIN32_HANDLE
706	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	825	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
707	#else	826	#else
708	anfd->handle = _get_osfhandle (fd);	827	anfd->handle = _get_osfhandle (fd);
709	#endif	828	#endif
710	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	829	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
711	}	830	}
712	#endif	831	#endif
713		832
714	{	833	{
715	unsigned char o_events = anfd->events;	834	unsigned char o_events = anfd->events;
716	unsigned char o_reify = anfd->reify;	835	unsigned char o_reify = anfd->reify;
717		836
718	anfd->reify = 0;	837	anfd->reify = 0;
719	anfd->events = events;	838	anfd->events = events;
720		839
721	if (o_events != events || o_reify & EV_IOFDSET)	840	if (o_events != events || o_reify & EV__IOFDSET)
722	backend_modify (EV_A_ fd, o_events, events);	841	backend_modify (EV_A_ fd, o_events, events);
723	}	842	}
724	}	843	}
725		844
726	fdchangecnt = 0;	845	fdchangecnt = 0;
727	}	846	}
728		847
729	void inline_size	848	/* something about the given fd changed */
		849	inline_size void
730	fd_change (EV_P_ int fd, int flags)	850	fd_change (EV_P_ int fd, int flags)
731	{	851	{
732	unsigned char reify = anfds [fd].reify;	852	unsigned char reify = anfds [fd].reify;
733	anfds [fd].reify |= flags;	853	anfds [fd].reify |= flags;
734		854
…		…
738	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	858	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
739	fdchanges [fdchangecnt - 1] = fd;	859	fdchanges [fdchangecnt - 1] = fd;
740	}	860	}
741	}	861	}
742		862
743	void inline_speed	863	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		864	inline_speed void
744	fd_kill (EV_P_ int fd)	865	fd_kill (EV_P_ int fd)
745	{	866	{
746	ev_io *w;	867	ev_io *w;
747		868
748	while ((w = (ev_io *)anfds [fd].head))	869	while ((w = (ev_io *)anfds [fd].head))
…		…
750	ev_io_stop (EV_A_ w);	871	ev_io_stop (EV_A_ w);
751	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	872	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
752	}	873	}
753	}	874	}
754		875
755	int inline_size	876	/* check whether the given fd is atcually valid, for error recovery */
		877	inline_size int
756	fd_valid (int fd)	878	fd_valid (int fd)
757	{	879	{
758	#ifdef _WIN32	880	#ifdef _WIN32
759	return _get_osfhandle (fd) != -1;	881	return _get_osfhandle (fd) != -1;
760	#else	882	#else
…		…
768	{	890	{
769	int fd;	891	int fd;
770		892
771	for (fd = 0; fd < anfdmax; ++fd)	893	for (fd = 0; fd < anfdmax; ++fd)
772	if (anfds [fd].events)	894	if (anfds [fd].events)
773	if (!fd_valid (fd) == -1 && errno == EBADF)	895	if (!fd_valid (fd) && errno == EBADF)
774	fd_kill (EV_A_ fd);	896	fd_kill (EV_A_ fd);
775	}	897	}
776		898
777	/* called on ENOMEM in select/poll to kill some fds and retry */	899	/* called on ENOMEM in select/poll to kill some fds and retry */
778	static void noinline	900	static void noinline
…		…
796		918
797	for (fd = 0; fd < anfdmax; ++fd)	919	for (fd = 0; fd < anfdmax; ++fd)
798	if (anfds [fd].events)	920	if (anfds [fd].events)
799	{	921	{
800	anfds [fd].events = 0;	922	anfds [fd].events = 0;
		923	anfds [fd].emask = 0;
801	fd_change (EV_A_ fd, EV_IOFDSET | 1);	924	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
802	}	925	}
803	}	926	}
804		927
805	/*****************************************************************************/	928	/*****************************************************************************/
806		929
…		…
822	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	945	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
823	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)	946	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
824	#define UPHEAP_DONE(p,k) ((p) == (k))	947	#define UPHEAP_DONE(p,k) ((p) == (k))
825		948
826	/* away from the root */	949	/* away from the root */
827	void inline_speed	950	inline_speed void
828	downheap (ANHE *heap, int N, int k)	951	downheap (ANHE *heap, int N, int k)
829	{	952	{
830	ANHE he = heap [k];	953	ANHE he = heap [k];
831	ANHE *E = heap + N + HEAP0;	954	ANHE *E = heap + N + HEAP0;
832		955
…		…
872	#define HEAP0 1	995	#define HEAP0 1
873	#define HPARENT(k) ((k) >> 1)	996	#define HPARENT(k) ((k) >> 1)
874	#define UPHEAP_DONE(p,k) (!(p))	997	#define UPHEAP_DONE(p,k) (!(p))
875		998
876	/* away from the root */	999	/* away from the root */
877	void inline_speed	1000	inline_speed void
878	downheap (ANHE *heap, int N, int k)	1001	downheap (ANHE *heap, int N, int k)
879	{	1002	{
880	ANHE he = heap [k];	1003	ANHE he = heap [k];
881		1004
882	for (;;)	1005	for (;;)
…		…
902	ev_active (ANHE_w (he)) = k;	1025	ev_active (ANHE_w (he)) = k;
903	}	1026	}
904	#endif	1027	#endif
905		1028
906	/* towards the root */	1029	/* towards the root */
907	void inline_speed	1030	inline_speed void
908	upheap (ANHE *heap, int k)	1031	upheap (ANHE *heap, int k)
909	{	1032	{
910	ANHE he = heap [k];	1033	ANHE he = heap [k];
911		1034
912	for (;;)	1035	for (;;)
…		…
923		1046
924	heap [k] = he;	1047	heap [k] = he;
925	ev_active (ANHE_w (he)) = k;	1048	ev_active (ANHE_w (he)) = k;
926	}	1049	}
927		1050
928	void inline_size	1051	/* move an element suitably so it is in a correct place */
		1052	inline_size void
929	adjustheap (ANHE *heap, int N, int k)	1053	adjustheap (ANHE *heap, int N, int k)
930	{	1054	{
931	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1055	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
932	upheap (heap, k);	1056	upheap (heap, k);
933	else	1057	else
934	downheap (heap, N, k);	1058	downheap (heap, N, k);
935	}	1059	}
936		1060
937	/* rebuild the heap: this function is used only once and executed rarely */	1061	/* rebuild the heap: this function is used only once and executed rarely */
938	void inline_size	1062	inline_size void
939	reheap (ANHE *heap, int N)	1063	reheap (ANHE *heap, int N)
940	{	1064	{
941	int i;	1065	int i;
942		1066
943	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */	1067	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
…		…
946	upheap (heap, i + HEAP0);	1070	upheap (heap, i + HEAP0);
947	}	1071	}
948		1072
949	/*****************************************************************************/	1073	/*****************************************************************************/
950		1074
		1075	/* associate signal watchers to a signal signal */
951	typedef struct	1076	typedef struct
952	{	1077	{
953	WL head;	1078	WL head;
954	EV_ATOMIC_T gotsig;	1079	EV_ATOMIC_T gotsig;
955	} ANSIG;	1080	} ANSIG;
…		…
957	static ANSIG *signals;	1082	static ANSIG *signals;
958	static int signalmax;	1083	static int signalmax;
959		1084
960	static EV_ATOMIC_T gotsig;	1085	static EV_ATOMIC_T gotsig;
961		1086
962	void inline_size
963	signals_init (ANSIG *base, int count)
964	{
965	while (count--)
966	{
967	base->head = 0;
968	base->gotsig = 0;
969
970	++base;
971	}
972	}
973
974	/*****************************************************************************/	1087	/*****************************************************************************/
975		1088
976	void inline_speed	1089	/* used to prepare libev internal fd's */
		1090	/* this is not fork-safe */
		1091	inline_speed void
977	fd_intern (int fd)	1092	fd_intern (int fd)
978	{	1093	{
979	#ifdef _WIN32	1094	#ifdef _WIN32
980	int arg = 1;	1095	unsigned long arg = 1;
981	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1096	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
982	#else	1097	#else
983	fcntl (fd, F_SETFD, FD_CLOEXEC);	1098	fcntl (fd, F_SETFD, FD_CLOEXEC);
984	fcntl (fd, F_SETFL, O_NONBLOCK);	1099	fcntl (fd, F_SETFL, O_NONBLOCK);
985	#endif	1100	#endif
986	}	1101	}
987		1102
988	static void noinline	1103	static void noinline
989	evpipe_init (EV_P)	1104	evpipe_init (EV_P)
990	{	1105	{
991	if (!ev_is_active (&pipeev))	1106	if (!ev_is_active (&pipe_w))
992	{	1107	{
993	#if EV_USE_EVENTFD	1108	#if EV_USE_EVENTFD
994	if ((evfd = eventfd (0, 0)) >= 0)	1109	if ((evfd = eventfd (0, 0)) >= 0)
995	{	1110	{
996	evpipe [0] = -1;	1111	evpipe [0] = -1;
997	fd_intern (evfd);	1112	fd_intern (evfd);
998	ev_io_set (&pipeev, evfd, EV_READ);	1113	ev_io_set (&pipe_w, evfd, EV_READ);
999	}	1114	}
1000	else	1115	else
1001	#endif	1116	#endif
1002	{	1117	{
1003	while (pipe (evpipe))	1118	while (pipe (evpipe))
1004	syserr ("(libev) error creating signal/async pipe");	1119	ev_syserr ("(libev) error creating signal/async pipe");
1005		1120
1006	fd_intern (evpipe [0]);	1121	fd_intern (evpipe [0]);
1007	fd_intern (evpipe [1]);	1122	fd_intern (evpipe [1]);
1008	ev_io_set (&pipeev, evpipe [0], EV_READ);	1123	ev_io_set (&pipe_w, evpipe [0], EV_READ);
1009	}	1124	}
1010		1125
1011	ev_io_start (EV_A_ &pipeev);	1126	ev_io_start (EV_A_ &pipe_w);
1012	ev_unref (EV_A); /* watcher should not keep loop alive */	1127	ev_unref (EV_A); /* watcher should not keep loop alive */
1013	}	1128	}
1014	}	1129	}
1015		1130
1016	void inline_size	1131	inline_size void
1017	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1132	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1018	{	1133	{
1019	if (!*flag)	1134	if (!*flag)
1020	{	1135	{
1021	int old_errno = errno; /* save errno because write might clobber it */	1136	int old_errno = errno; /* save errno because write might clobber it */
…		…
1034		1149
1035	errno = old_errno;	1150	errno = old_errno;
1036	}	1151	}
1037	}	1152	}
1038		1153
		1154	/* called whenever the libev signal pipe */
		1155	/* got some events (signal, async) */
1039	static void	1156	static void
1040	pipecb (EV_P_ ev_io *iow, int revents)	1157	pipecb (EV_P_ ev_io *iow, int revents)
1041	{	1158	{
1042	#if EV_USE_EVENTFD	1159	#if EV_USE_EVENTFD
1043	if (evfd >= 0)	1160	if (evfd >= 0)
…		…
1099	ev_feed_signal_event (EV_P_ int signum)	1216	ev_feed_signal_event (EV_P_ int signum)
1100	{	1217	{
1101	WL w;	1218	WL w;
1102		1219
1103	#if EV_MULTIPLICITY	1220	#if EV_MULTIPLICITY
1104	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1221	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1105	#endif	1222	#endif
1106		1223
1107	--signum;	1224	--signum;
1108		1225
1109	if (signum < 0 || signum >= signalmax)	1226	if (signum < 0 || signum >= signalmax)
…		…
1125		1242
1126	#ifndef WIFCONTINUED	1243	#ifndef WIFCONTINUED
1127	# define WIFCONTINUED(status) 0	1244	# define WIFCONTINUED(status) 0
1128	#endif	1245	#endif
1129		1246
1130	void inline_speed	1247	/* handle a single child status event */
		1248	inline_speed void
1131	child_reap (EV_P_ int chain, int pid, int status)	1249	child_reap (EV_P_ int chain, int pid, int status)
1132	{	1250	{
1133	ev_child *w;	1251	ev_child *w;
1134	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1252	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1135		1253
…		…
1148		1266
1149	#ifndef WCONTINUED	1267	#ifndef WCONTINUED
1150	# define WCONTINUED 0	1268	# define WCONTINUED 0
1151	#endif	1269	#endif
1152		1270
		1271	/* called on sigchld etc., calls waitpid */
1153	static void	1272	static void
1154	childcb (EV_P_ ev_signal *sw, int revents)	1273	childcb (EV_P_ ev_signal *sw, int revents)
1155	{	1274	{
1156	int pid, status;	1275	int pid, status;
1157		1276
…		…
1238	/* kqueue is borked on everything but netbsd apparently */	1357	/* kqueue is borked on everything but netbsd apparently */
1239	/* it usually doesn't work correctly on anything but sockets and pipes */	1358	/* it usually doesn't work correctly on anything but sockets and pipes */
1240	flags &= ~EVBACKEND_KQUEUE;	1359	flags &= ~EVBACKEND_KQUEUE;
1241	#endif	1360	#endif
1242	#ifdef __APPLE__	1361	#ifdef __APPLE__
1243	// flags &= ~EVBACKEND_KQUEUE; for documentation	1362	/* only select works correctly on that "unix-certified" platform */
1244	flags &= ~EVBACKEND_POLL;	1363	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1364	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1245	#endif	1365	#endif
1246		1366
1247	return flags;	1367	return flags;
1248	}	1368	}
1249		1369
…		…
1263	ev_backend (EV_P)	1383	ev_backend (EV_P)
1264	{	1384	{
1265	return backend;	1385	return backend;
1266	}	1386	}
1267		1387
		1388	#if EV_MINIMAL < 2
1268	unsigned int	1389	unsigned int
1269	ev_loop_count (EV_P)	1390	ev_loop_count (EV_P)
1270	{	1391	{
1271	return loop_count;	1392	return loop_count;
1272	}	1393	}
1273		1394
		1395	unsigned int
		1396	ev_loop_depth (EV_P)
		1397	{
		1398	return loop_depth;
		1399	}
		1400
1274	void	1401	void
1275	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1402	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1276	{	1403	{
1277	io_blocktime = interval;	1404	io_blocktime = interval;
1278	}	1405	}
…		…
1281	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1408	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1282	{	1409	{
1283	timeout_blocktime = interval;	1410	timeout_blocktime = interval;
1284	}	1411	}
1285		1412
		1413	void
		1414	ev_set_userdata (EV_P_ void *data)
		1415	{
		1416	userdata = data;
		1417	}
		1418
		1419	void *
		1420	ev_userdata (EV_P)
		1421	{
		1422	return userdata;
		1423	}
		1424
		1425	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1426	{
		1427	invoke_cb = invoke_pending_cb;
		1428	}
		1429
		1430	void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
		1431	{
		1432	release_cb = release;
		1433	acquire_cb = acquire;
		1434	}
		1435	#endif
		1436
		1437	/* initialise a loop structure, must be zero-initialised */
1286	static void noinline	1438	static void noinline
1287	loop_init (EV_P_ unsigned int flags)	1439	loop_init (EV_P_ unsigned int flags)
1288	{	1440	{
1289	if (!backend)	1441	if (!backend)
1290	{	1442	{
		1443	#if EV_USE_REALTIME
		1444	if (!have_realtime)
		1445	{
		1446	struct timespec ts;
		1447
		1448	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1449	have_realtime = 1;
		1450	}
		1451	#endif
		1452
1291	#if EV_USE_MONOTONIC	1453	#if EV_USE_MONOTONIC
		1454	if (!have_monotonic)
1292	{	1455	{
1293	struct timespec ts;	1456	struct timespec ts;
		1457
1294	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1458	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1295	have_monotonic = 1;	1459	have_monotonic = 1;
1296	}	1460	}
1297	#endif	1461	#endif
1298		1462
1299	ev_rt_now = ev_time ();	1463	ev_rt_now = ev_time ();
1300	mn_now = get_clock ();	1464	mn_now = get_clock ();
1301	now_floor = mn_now;	1465	now_floor = mn_now;
1302	rtmn_diff = ev_rt_now - mn_now;	1466	rtmn_diff = ev_rt_now - mn_now;
		1467	#if EV_MINIMAL < 2
		1468	invoke_cb = ev_invoke_pending;
		1469	#endif
1303		1470
1304	io_blocktime = 0.;	1471	io_blocktime = 0.;
1305	timeout_blocktime = 0.;	1472	timeout_blocktime = 0.;
1306	backend = 0;	1473	backend = 0;
1307	backend_fd = -1;	1474	backend_fd = -1;
…		…
1338	#endif	1505	#endif
1339	#if EV_USE_SELECT	1506	#if EV_USE_SELECT
1340	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1507	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1341	#endif	1508	#endif
1342		1509
		1510	ev_prepare_init (&pending_w, pendingcb);
		1511
1343	ev_init (&pipeev, pipecb);	1512	ev_init (&pipe_w, pipecb);
1344	ev_set_priority (&pipeev, EV_MAXPRI);	1513	ev_set_priority (&pipe_w, EV_MAXPRI);
1345	}	1514	}
1346	}	1515	}
1347		1516
		1517	/* free up a loop structure */
1348	static void noinline	1518	static void noinline
1349	loop_destroy (EV_P)	1519	loop_destroy (EV_P)
1350	{	1520	{
1351	int i;	1521	int i;
1352		1522
1353	if (ev_is_active (&pipeev))	1523	if (ev_is_active (&pipe_w))
1354	{	1524	{
1355	ev_ref (EV_A); /* signal watcher */	1525	ev_ref (EV_A); /* signal watcher */
1356	ev_io_stop (EV_A_ &pipeev);	1526	ev_io_stop (EV_A_ &pipe_w);
1357		1527
1358	#if EV_USE_EVENTFD	1528	#if EV_USE_EVENTFD
1359	if (evfd >= 0)	1529	if (evfd >= 0)
1360	close (evfd);	1530	close (evfd);
1361	#endif	1531	#endif
…		…
1400	}	1570	}
1401		1571
1402	ev_free (anfds); anfdmax = 0;	1572	ev_free (anfds); anfdmax = 0;
1403		1573
1404	/* have to use the microsoft-never-gets-it-right macro */	1574	/* have to use the microsoft-never-gets-it-right macro */
		1575	array_free (rfeed, EMPTY);
1405	array_free (fdchange, EMPTY);	1576	array_free (fdchange, EMPTY);
1406	array_free (timer, EMPTY);	1577	array_free (timer, EMPTY);
1407	#if EV_PERIODIC_ENABLE	1578	#if EV_PERIODIC_ENABLE
1408	array_free (periodic, EMPTY);	1579	array_free (periodic, EMPTY);
1409	#endif	1580	#endif
…		…
1418		1589
1419	backend = 0;	1590	backend = 0;
1420	}	1591	}
1421		1592
1422	#if EV_USE_INOTIFY	1593	#if EV_USE_INOTIFY
1423	void inline_size infy_fork (EV_P);	1594	inline_size void infy_fork (EV_P);
1424	#endif	1595	#endif
1425		1596
1426	void inline_size	1597	inline_size void
1427	loop_fork (EV_P)	1598	loop_fork (EV_P)
1428	{	1599	{
1429	#if EV_USE_PORT	1600	#if EV_USE_PORT
1430	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1601	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1431	#endif	1602	#endif
…		…
1437	#endif	1608	#endif
1438	#if EV_USE_INOTIFY	1609	#if EV_USE_INOTIFY
1439	infy_fork (EV_A);	1610	infy_fork (EV_A);
1440	#endif	1611	#endif
1441		1612
1442	if (ev_is_active (&pipeev))	1613	if (ev_is_active (&pipe_w))
1443	{	1614	{
1444	/* this "locks" the handlers against writing to the pipe */	1615	/* this "locks" the handlers against writing to the pipe */
1445	/* while we modify the fd vars */	1616	/* while we modify the fd vars */
1446	gotsig = 1;	1617	gotsig = 1;
1447	#if EV_ASYNC_ENABLE	1618	#if EV_ASYNC_ENABLE
1448	gotasync = 1;	1619	gotasync = 1;
1449	#endif	1620	#endif
1450		1621
1451	ev_ref (EV_A);	1622	ev_ref (EV_A);
1452	ev_io_stop (EV_A_ &pipeev);	1623	ev_io_stop (EV_A_ &pipe_w);
1453		1624
1454	#if EV_USE_EVENTFD	1625	#if EV_USE_EVENTFD
1455	if (evfd >= 0)	1626	if (evfd >= 0)
1456	close (evfd);	1627	close (evfd);
1457	#endif	1628	#endif
…		…
1462	close (evpipe [1]);	1633	close (evpipe [1]);
1463	}	1634	}
1464		1635
1465	evpipe_init (EV_A);	1636	evpipe_init (EV_A);
1466	/* now iterate over everything, in case we missed something */	1637	/* now iterate over everything, in case we missed something */
1467	pipecb (EV_A_ &pipeev, EV_READ);	1638	pipecb (EV_A_ &pipe_w, EV_READ);
1468	}	1639	}
1469		1640
1470	postfork = 0;	1641	postfork = 0;
1471	}	1642	}
1472		1643
…		…
1497	void	1668	void
1498	ev_loop_fork (EV_P)	1669	ev_loop_fork (EV_P)
1499	{	1670	{
1500	postfork = 1; /* must be in line with ev_default_fork */	1671	postfork = 1; /* must be in line with ev_default_fork */
1501	}	1672	}
		1673	#endif /* multiplicity */
1502		1674
1503	#if EV_VERIFY	1675	#if EV_VERIFY
1504	void noinline	1676	static void noinline
1505	verify_watcher (EV_P_ W w)	1677	verify_watcher (EV_P_ W w)
1506	{	1678	{
1507	assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));	1679	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1508		1680
1509	if (w->pending)	1681	if (w->pending)
1510	assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));	1682	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1511	}	1683	}
1512		1684
1513	static void noinline	1685	static void noinline
1514	verify_heap (EV_P_ ANHE *heap, int N)	1686	verify_heap (EV_P_ ANHE *heap, int N)
1515	{	1687	{
1516	int i;	1688	int i;
1517		1689
1518	for (i = HEAP0; i < N + HEAP0; ++i)	1690	for (i = HEAP0; i < N + HEAP0; ++i)
1519	{	1691	{
1520	assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));	1692	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1521	assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));	1693	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1522	assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));	1694	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1523		1695
1524	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));	1696	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1525	}	1697	}
1526	}	1698	}
1527		1699
1528	static void noinline	1700	static void noinline
1529	array_verify (EV_P_ W *ws, int cnt)	1701	array_verify (EV_P_ W *ws, int cnt)
1530	{	1702	{
1531	while (cnt--)	1703	while (cnt--)
1532	{	1704	{
1533	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));	1705	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1534	verify_watcher (EV_A_ ws [cnt]);	1706	verify_watcher (EV_A_ ws [cnt]);
1535	}	1707	}
1536	}	1708	}
1537	#endif	1709	#endif
1538		1710
		1711	#if EV_MINIMAL < 2
1539	void	1712	void
1540	ev_loop_verify (EV_P)	1713	ev_loop_verify (EV_P)
1541	{	1714	{
1542	#if EV_VERIFY	1715	#if EV_VERIFY
1543	int i;	1716	int i;
…		…
1545		1718
1546	assert (activecnt >= -1);	1719	assert (activecnt >= -1);
1547		1720
1548	assert (fdchangemax >= fdchangecnt);	1721	assert (fdchangemax >= fdchangecnt);
1549	for (i = 0; i < fdchangecnt; ++i)	1722	for (i = 0; i < fdchangecnt; ++i)
1550	assert (("negative fd in fdchanges", fdchanges [i] >= 0));	1723	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1551		1724
1552	assert (anfdmax >= 0);	1725	assert (anfdmax >= 0);
1553	for (i = 0; i < anfdmax; ++i)	1726	for (i = 0; i < anfdmax; ++i)
1554	for (w = anfds [i].head; w; w = w->next)	1727	for (w = anfds [i].head; w; w = w->next)
1555	{	1728	{
1556	verify_watcher (EV_A_ (W)w);	1729	verify_watcher (EV_A_ (W)w);
1557	assert (("inactive fd watcher on anfd list", ev_active (w) == 1));	1730	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1558	assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));	1731	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1559	}	1732	}
1560		1733
1561	assert (timermax >= timercnt);	1734	assert (timermax >= timercnt);
1562	verify_heap (EV_A_ timers, timercnt);	1735	verify_heap (EV_A_ timers, timercnt);
1563		1736
…		…
1568		1741
1569	for (i = NUMPRI; i--; )	1742	for (i = NUMPRI; i--; )
1570	{	1743	{
1571	assert (pendingmax [i] >= pendingcnt [i]);	1744	assert (pendingmax [i] >= pendingcnt [i]);
1572	#if EV_IDLE_ENABLE	1745	#if EV_IDLE_ENABLE
		1746	assert (idleall >= 0);
1573	assert (idlemax [i] >= idlecnt [i]);	1747	assert (idlemax [i] >= idlecnt [i]);
1574	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);	1748	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1575	#endif	1749	#endif
1576	}	1750	}
1577		1751
…		…
1595	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1769	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1596	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)	1770	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1597	# endif	1771	# endif
1598	#endif	1772	#endif
1599	}	1773	}
1600		1774	#endif
1601	#endif /* multiplicity */
1602		1775
1603	#if EV_MULTIPLICITY	1776	#if EV_MULTIPLICITY
1604	struct ev_loop *	1777	struct ev_loop *
1605	ev_default_loop_init (unsigned int flags)	1778	ev_default_loop_init (unsigned int flags)
1606	#else	1779	#else
…		…
1639	{	1812	{
1640	#if EV_MULTIPLICITY	1813	#if EV_MULTIPLICITY
1641	struct ev_loop *loop = ev_default_loop_ptr;	1814	struct ev_loop *loop = ev_default_loop_ptr;
1642	#endif	1815	#endif
1643		1816
		1817	ev_default_loop_ptr = 0;
		1818
1644	#ifndef _WIN32	1819	#ifndef _WIN32
1645	ev_ref (EV_A); /* child watcher */	1820	ev_ref (EV_A); /* child watcher */
1646	ev_signal_stop (EV_A_ &childev);	1821	ev_signal_stop (EV_A_ &childev);
1647	#endif	1822	#endif
1648		1823
…		…
1654	{	1829	{
1655	#if EV_MULTIPLICITY	1830	#if EV_MULTIPLICITY
1656	struct ev_loop *loop = ev_default_loop_ptr;	1831	struct ev_loop *loop = ev_default_loop_ptr;
1657	#endif	1832	#endif
1658		1833
1659	if (backend)
1660	postfork = 1; /* must be in line with ev_loop_fork */	1834	postfork = 1; /* must be in line with ev_loop_fork */
1661	}	1835	}
1662		1836
1663	/*****************************************************************************/	1837	/*****************************************************************************/
1664		1838
1665	void	1839	void
1666	ev_invoke (EV_P_ void *w, int revents)	1840	ev_invoke (EV_P_ void *w, int revents)
1667	{	1841	{
1668	EV_CB_INVOKE ((W)w, revents);	1842	EV_CB_INVOKE ((W)w, revents);
1669	}	1843	}
1670		1844
1671	void inline_speed	1845	unsigned int
1672	call_pending (EV_P)	1846	ev_pending_count (EV_P)
		1847	{
		1848	int pri;
		1849	unsigned int count = 0;
		1850
		1851	for (pri = NUMPRI; pri--; )
		1852	count += pendingcnt [pri];
		1853
		1854	return count;
		1855	}
		1856
		1857	void noinline
		1858	ev_invoke_pending (EV_P)
1673	{	1859	{
1674	int pri;	1860	int pri;
1675		1861
1676	for (pri = NUMPRI; pri--; )	1862	for (pri = NUMPRI; pri--; )
1677	while (pendingcnt [pri])	1863	while (pendingcnt [pri])
1678	{	1864	{
1679	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1865	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1680		1866
1681	if (expect_true (p->w))
1682	{
1683	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1867	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1868	/* ^ this is no longer true, as pending_w could be here */
1684		1869
1685	p->w->pending = 0;	1870	p->w->pending = 0;
1686	EV_CB_INVOKE (p->w, p->events);	1871	EV_CB_INVOKE (p->w, p->events);
1687	EV_FREQUENT_CHECK;	1872	EV_FREQUENT_CHECK;
1688	}
1689	}	1873	}
1690	}	1874	}
1691		1875
1692	#if EV_IDLE_ENABLE	1876	#if EV_IDLE_ENABLE
1693	void inline_size	1877	/* make idle watchers pending. this handles the "call-idle */
		1878	/* only when higher priorities are idle" logic */
		1879	inline_size void
1694	idle_reify (EV_P)	1880	idle_reify (EV_P)
1695	{	1881	{
1696	if (expect_false (idleall))	1882	if (expect_false (idleall))
1697	{	1883	{
1698	int pri;	1884	int pri;
…		…
1710	}	1896	}
1711	}	1897	}
1712	}	1898	}
1713	#endif	1899	#endif
1714		1900
1715	void inline_size	1901	/* make timers pending */
		1902	inline_size void
1716	timers_reify (EV_P)	1903	timers_reify (EV_P)
1717	{	1904	{
1718	EV_FREQUENT_CHECK;	1905	EV_FREQUENT_CHECK;
1719		1906
1720	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	1907	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1721	{	1908	{
1722	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	1909	do
1723
1724	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1725
1726	/* first reschedule or stop timer */
1727	if (w->repeat)
1728	{	1910	{
		1911	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1912
		1913	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		1914
		1915	/* first reschedule or stop timer */
		1916	if (w->repeat)
		1917	{
1729	ev_at (w) += w->repeat;	1918	ev_at (w) += w->repeat;
1730	if (ev_at (w) < mn_now)	1919	if (ev_at (w) < mn_now)
1731	ev_at (w) = mn_now;	1920	ev_at (w) = mn_now;
1732		1921
1733	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1922	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1734		1923
1735	ANHE_at_cache (timers [HEAP0]);	1924	ANHE_at_cache (timers [HEAP0]);
1736	downheap (timers, timercnt, HEAP0);	1925	downheap (timers, timercnt, HEAP0);
		1926	}
		1927	else
		1928	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1929
		1930	EV_FREQUENT_CHECK;
		1931	feed_reverse (EV_A_ (W)w);
1737	}	1932	}
1738	else	1933	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1739	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1740		1934
1741	EV_FREQUENT_CHECK;
1742	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1935	feed_reverse_done (EV_A_ EV_TIMEOUT);
1743	}	1936	}
1744	}	1937	}
1745		1938
1746	#if EV_PERIODIC_ENABLE	1939	#if EV_PERIODIC_ENABLE
1747	void inline_size	1940	/* make periodics pending */
		1941	inline_size void
1748	periodics_reify (EV_P)	1942	periodics_reify (EV_P)
1749	{	1943	{
1750	EV_FREQUENT_CHECK;	1944	EV_FREQUENT_CHECK;
1751		1945
1752	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	1946	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1753	{	1947	{
1754	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	1948	int feed_count = 0;
1755		1949
1756	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	1950	do
1757
1758	/* first reschedule or stop timer */
1759	if (w->reschedule_cb)
1760	{	1951	{
		1952	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1953
		1954	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		1955
		1956	/* first reschedule or stop timer */
		1957	if (w->reschedule_cb)
		1958	{
1761	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1959	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1762		1960
1763	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));	1961	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1764		1962
1765	ANHE_at_cache (periodics [HEAP0]);	1963	ANHE_at_cache (periodics [HEAP0]);
1766	downheap (periodics, periodiccnt, HEAP0);	1964	downheap (periodics, periodiccnt, HEAP0);
		1965	}
		1966	else if (w->interval)
		1967	{
		1968	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1969	/* if next trigger time is not sufficiently in the future, put it there */
		1970	/* this might happen because of floating point inexactness */
		1971	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1972	{
		1973	ev_at (w) += w->interval;
		1974
		1975	/* if interval is unreasonably low we might still have a time in the past */
		1976	/* so correct this. this will make the periodic very inexact, but the user */
		1977	/* has effectively asked to get triggered more often than possible */
		1978	if (ev_at (w) < ev_rt_now)
		1979	ev_at (w) = ev_rt_now;
		1980	}
		1981
		1982	ANHE_at_cache (periodics [HEAP0]);
		1983	downheap (periodics, periodiccnt, HEAP0);
		1984	}
		1985	else
		1986	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1987
		1988	EV_FREQUENT_CHECK;
		1989	feed_reverse (EV_A_ (W)w);
1767	}	1990	}
1768	else if (w->interval)	1991	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1769	{
1770	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1771	/* if next trigger time is not sufficiently in the future, put it there */
1772	/* this might happen because of floating point inexactness */
1773	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1774	{
1775	ev_at (w) += w->interval;
1776		1992
1777	/* if interval is unreasonably low we might still have a time in the past */
1778	/* so correct this. this will make the periodic very inexact, but the user */
1779	/* has effectively asked to get triggered more often than possible */
1780	if (ev_at (w) < ev_rt_now)
1781	ev_at (w) = ev_rt_now;
1782	}
1783
1784	ANHE_at_cache (periodics [HEAP0]);
1785	downheap (periodics, periodiccnt, HEAP0);
1786	}
1787	else
1788	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1789
1790	EV_FREQUENT_CHECK;
1791	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1993	feed_reverse_done (EV_A_ EV_PERIODIC);
1792	}	1994	}
1793	}	1995	}
1794		1996
		1997	/* simply recalculate all periodics */
		1998	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1795	static void noinline	1999	static void noinline
1796	periodics_reschedule (EV_P)	2000	periodics_reschedule (EV_P)
1797	{	2001	{
1798	int i;	2002	int i;
1799		2003
…		…
1812		2016
1813	reheap (periodics, periodiccnt);	2017	reheap (periodics, periodiccnt);
1814	}	2018	}
1815	#endif	2019	#endif
1816		2020
1817	void inline_speed	2021	/* adjust all timers by a given offset */
		2022	static void noinline
		2023	timers_reschedule (EV_P_ ev_tstamp adjust)
		2024	{
		2025	int i;
		2026
		2027	for (i = 0; i < timercnt; ++i)
		2028	{
		2029	ANHE *he = timers + i + HEAP0;
		2030	ANHE_w (*he)->at += adjust;
		2031	ANHE_at_cache (*he);
		2032	}
		2033	}
		2034
		2035	/* fetch new monotonic and realtime times from the kernel */
		2036	/* also detetc if there was a timejump, and act accordingly */
		2037	inline_speed void
1818	time_update (EV_P_ ev_tstamp max_block)	2038	time_update (EV_P_ ev_tstamp max_block)
1819	{	2039	{
1820	int i;
1821
1822	#if EV_USE_MONOTONIC	2040	#if EV_USE_MONOTONIC
1823	if (expect_true (have_monotonic))	2041	if (expect_true (have_monotonic))
1824	{	2042	{
		2043	int i;
1825	ev_tstamp odiff = rtmn_diff;	2044	ev_tstamp odiff = rtmn_diff;
1826		2045
1827	mn_now = get_clock ();	2046	mn_now = get_clock ();
1828		2047
1829	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2048	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1855	ev_rt_now = ev_time ();	2074	ev_rt_now = ev_time ();
1856	mn_now = get_clock ();	2075	mn_now = get_clock ();
1857	now_floor = mn_now;	2076	now_floor = mn_now;
1858	}	2077	}
1859		2078
		2079	/* no timer adjustment, as the monotonic clock doesn't jump */
		2080	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1860	# if EV_PERIODIC_ENABLE	2081	# if EV_PERIODIC_ENABLE
1861	periodics_reschedule (EV_A);	2082	periodics_reschedule (EV_A);
1862	# endif	2083	# endif
1863	/* no timer adjustment, as the monotonic clock doesn't jump */
1864	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1865	}	2084	}
1866	else	2085	else
1867	#endif	2086	#endif
1868	{	2087	{
1869	ev_rt_now = ev_time ();	2088	ev_rt_now = ev_time ();
1870		2089
1871	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2090	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1872	{	2091	{
		2092	/* adjust timers. this is easy, as the offset is the same for all of them */
		2093	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1873	#if EV_PERIODIC_ENABLE	2094	#if EV_PERIODIC_ENABLE
1874	periodics_reschedule (EV_A);	2095	periodics_reschedule (EV_A);
1875	#endif	2096	#endif
1876	/* adjust timers. this is easy, as the offset is the same for all of them */
1877	for (i = 0; i < timercnt; ++i)
1878	{
1879	ANHE *he = timers + i + HEAP0;
1880	ANHE_w (*he)->at += ev_rt_now - mn_now;
1881	ANHE_at_cache (*he);
1882	}
1883	}	2097	}
1884		2098
1885	mn_now = ev_rt_now;	2099	mn_now = ev_rt_now;
1886	}	2100	}
1887	}	2101	}
1888		2102
1889	void	2103	void
1890	ev_ref (EV_P)
1891	{
1892	++activecnt;
1893	}
1894
1895	void
1896	ev_unref (EV_P)
1897	{
1898	--activecnt;
1899	}
1900
1901	static int loop_done;
1902
1903	void
1904	ev_loop (EV_P_ int flags)	2104	ev_loop (EV_P_ int flags)
1905	{	2105	{
		2106	#if EV_MINIMAL < 2
		2107	++loop_depth;
		2108	#endif
		2109
		2110	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2111
1906	loop_done = EVUNLOOP_CANCEL;	2112	loop_done = EVUNLOOP_CANCEL;
1907		2113
1908	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2114	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1909		2115
1910	do	2116	do
1911	{	2117	{
1912	#if EV_VERIFY >= 2	2118	#if EV_VERIFY >= 2
1913	ev_loop_verify (EV_A);	2119	ev_loop_verify (EV_A);
…		…
1926	/* we might have forked, so queue fork handlers */	2132	/* we might have forked, so queue fork handlers */
1927	if (expect_false (postfork))	2133	if (expect_false (postfork))
1928	if (forkcnt)	2134	if (forkcnt)
1929	{	2135	{
1930	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2136	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1931	call_pending (EV_A);	2137	EV_INVOKE_PENDING;
1932	}	2138	}
1933	#endif	2139	#endif
1934		2140
1935	/* queue prepare watchers (and execute them) */	2141	/* queue prepare watchers (and execute them) */
1936	if (expect_false (preparecnt))	2142	if (expect_false (preparecnt))
1937	{	2143	{
1938	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2144	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1939	call_pending (EV_A);	2145	EV_INVOKE_PENDING;
1940	}	2146	}
1941		2147
1942	if (expect_false (!activecnt))	2148	if (expect_false (loop_done))
1943	break;	2149	break;
1944		2150
1945	/* we might have forked, so reify kernel state if necessary */	2151	/* we might have forked, so reify kernel state if necessary */
1946	if (expect_false (postfork))	2152	if (expect_false (postfork))
1947	loop_fork (EV_A);	2153	loop_fork (EV_A);
…		…
1954	ev_tstamp waittime = 0.;	2160	ev_tstamp waittime = 0.;
1955	ev_tstamp sleeptime = 0.;	2161	ev_tstamp sleeptime = 0.;
1956		2162
1957	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2163	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1958	{	2164	{
		2165	/* remember old timestamp for io_blocktime calculation */
		2166	ev_tstamp prev_mn_now = mn_now;
		2167
1959	/* update time to cancel out callback processing overhead */	2168	/* update time to cancel out callback processing overhead */
1960	time_update (EV_A_ 1e100);	2169	time_update (EV_A_ 1e100);
1961		2170
1962	waittime = MAX_BLOCKTIME;	2171	waittime = MAX_BLOCKTIME;
1963		2172
…		…
1973	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2182	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1974	if (waittime > to) waittime = to;	2183	if (waittime > to) waittime = to;
1975	}	2184	}
1976	#endif	2185	#endif
1977		2186
		2187	/* don't let timeouts decrease the waittime below timeout_blocktime */
1978	if (expect_false (waittime < timeout_blocktime))	2188	if (expect_false (waittime < timeout_blocktime))
1979	waittime = timeout_blocktime;	2189	waittime = timeout_blocktime;
1980		2190
1981	sleeptime = waittime - backend_fudge;	2191	/* extra check because io_blocktime is commonly 0 */
1982
1983	if (expect_true (sleeptime > io_blocktime))	2192	if (expect_false (io_blocktime))
1984	sleeptime = io_blocktime;
1985
1986	if (sleeptime)
1987	{	2193	{
		2194	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2195
		2196	if (sleeptime > waittime - backend_fudge)
		2197	sleeptime = waittime - backend_fudge;
		2198
		2199	if (expect_true (sleeptime > 0.))
		2200	{
1988	ev_sleep (sleeptime);	2201	ev_sleep (sleeptime);
1989	waittime -= sleeptime;	2202	waittime -= sleeptime;
		2203	}
1990	}	2204	}
1991	}	2205	}
1992		2206
		2207	#if EV_MINIMAL < 2
1993	++loop_count;	2208	++loop_count;
		2209	#endif
		2210	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1994	backend_poll (EV_A_ waittime);	2211	backend_poll (EV_A_ waittime);
		2212	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1995		2213
1996	/* update ev_rt_now, do magic */	2214	/* update ev_rt_now, do magic */
1997	time_update (EV_A_ waittime + sleeptime);	2215	time_update (EV_A_ waittime + sleeptime);
1998	}	2216	}
1999		2217
…		…
2010		2228
2011	/* queue check watchers, to be executed first */	2229	/* queue check watchers, to be executed first */
2012	if (expect_false (checkcnt))	2230	if (expect_false (checkcnt))
2013	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2231	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2014		2232
2015	call_pending (EV_A);	2233	EV_INVOKE_PENDING;
2016	}	2234	}
2017	while (expect_true (	2235	while (expect_true (
2018	activecnt	2236	activecnt
2019	&& !loop_done	2237	&& !loop_done
2020	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2238	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2021	));	2239	));
2022		2240
2023	if (loop_done == EVUNLOOP_ONE)	2241	if (loop_done == EVUNLOOP_ONE)
2024	loop_done = EVUNLOOP_CANCEL;	2242	loop_done = EVUNLOOP_CANCEL;
		2243
		2244	#if EV_MINIMAL < 2
		2245	--loop_depth;
		2246	#endif
2025	}	2247	}
2026		2248
2027	void	2249	void
2028	ev_unloop (EV_P_ int how)	2250	ev_unloop (EV_P_ int how)
2029	{	2251	{
2030	loop_done = how;	2252	loop_done = how;
2031	}	2253	}
2032		2254
		2255	void
		2256	ev_ref (EV_P)
		2257	{
		2258	++activecnt;
		2259	}
		2260
		2261	void
		2262	ev_unref (EV_P)
		2263	{
		2264	--activecnt;
		2265	}
		2266
		2267	void
		2268	ev_now_update (EV_P)
		2269	{
		2270	time_update (EV_A_ 1e100);
		2271	}
		2272
		2273	void
		2274	ev_suspend (EV_P)
		2275	{
		2276	ev_now_update (EV_A);
		2277	}
		2278
		2279	void
		2280	ev_resume (EV_P)
		2281	{
		2282	ev_tstamp mn_prev = mn_now;
		2283
		2284	ev_now_update (EV_A);
		2285	timers_reschedule (EV_A_ mn_now - mn_prev);
		2286	#if EV_PERIODIC_ENABLE
		2287	/* TODO: really do this? */
		2288	periodics_reschedule (EV_A);
		2289	#endif
		2290	}
		2291
2033	/*****************************************************************************/	2292	/*****************************************************************************/
		2293	/* singly-linked list management, used when the expected list length is short */
2034		2294
2035	void inline_size	2295	inline_size void
2036	wlist_add (WL *head, WL elem)	2296	wlist_add (WL *head, WL elem)
2037	{	2297	{
2038	elem->next = *head;	2298	elem->next = *head;
2039	*head = elem;	2299	*head = elem;
2040	}	2300	}
2041		2301
2042	void inline_size	2302	inline_size void
2043	wlist_del (WL *head, WL elem)	2303	wlist_del (WL *head, WL elem)
2044	{	2304	{
2045	while (*head)	2305	while (*head)
2046	{	2306	{
2047	if (*head == elem)	2307	if (*head == elem)
…		…
2052		2312
2053	head = &(*head)->next;	2313	head = &(*head)->next;
2054	}	2314	}
2055	}	2315	}
2056		2316
2057	void inline_speed	2317	/* internal, faster, version of ev_clear_pending */
		2318	inline_speed void
2058	clear_pending (EV_P_ W w)	2319	clear_pending (EV_P_ W w)
2059	{	2320	{
2060	if (w->pending)	2321	if (w->pending)
2061	{	2322	{
2062	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2323	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2063	w->pending = 0;	2324	w->pending = 0;
2064	}	2325	}
2065	}	2326	}
2066		2327
2067	int	2328	int
…		…
2071	int pending = w_->pending;	2332	int pending = w_->pending;
2072		2333
2073	if (expect_true (pending))	2334	if (expect_true (pending))
2074	{	2335	{
2075	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2336	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2337	p->w = (W)&pending_w;
2076	w_->pending = 0;	2338	w_->pending = 0;
2077	p->w = 0;
2078	return p->events;	2339	return p->events;
2079	}	2340	}
2080	else	2341	else
2081	return 0;	2342	return 0;
2082	}	2343	}
2083		2344
2084	void inline_size	2345	inline_size void
2085	pri_adjust (EV_P_ W w)	2346	pri_adjust (EV_P_ W w)
2086	{	2347	{
2087	int pri = w->priority;	2348	int pri = ev_priority (w);
2088	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2349	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2089	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2350	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2090	w->priority = pri;	2351	ev_set_priority (w, pri);
2091	}	2352	}
2092		2353
2093	void inline_speed	2354	inline_speed void
2094	ev_start (EV_P_ W w, int active)	2355	ev_start (EV_P_ W w, int active)
2095	{	2356	{
2096	pri_adjust (EV_A_ w);	2357	pri_adjust (EV_A_ w);
2097	w->active = active;	2358	w->active = active;
2098	ev_ref (EV_A);	2359	ev_ref (EV_A);
2099	}	2360	}
2100		2361
2101	void inline_size	2362	inline_size void
2102	ev_stop (EV_P_ W w)	2363	ev_stop (EV_P_ W w)
2103	{	2364	{
2104	ev_unref (EV_A);	2365	ev_unref (EV_A);
2105	w->active = 0;	2366	w->active = 0;
2106	}	2367	}
…		…
2113	int fd = w->fd;	2374	int fd = w->fd;
2114		2375
2115	if (expect_false (ev_is_active (w)))	2376	if (expect_false (ev_is_active (w)))
2116	return;	2377	return;
2117		2378
2118	assert (("ev_io_start called with negative fd", fd >= 0));	2379	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2380	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2119		2381
2120	EV_FREQUENT_CHECK;	2382	EV_FREQUENT_CHECK;
2121		2383
2122	ev_start (EV_A_ (W)w, 1);	2384	ev_start (EV_A_ (W)w, 1);
2123	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2385	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2124	wlist_add (&anfds[fd].head, (WL)w);	2386	wlist_add (&anfds[fd].head, (WL)w);
2125		2387
2126	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2388	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2127	w->events &= ~EV_IOFDSET;	2389	w->events &= ~EV__IOFDSET;
2128		2390
2129	EV_FREQUENT_CHECK;	2391	EV_FREQUENT_CHECK;
2130	}	2392	}
2131		2393
2132	void noinline	2394	void noinline
…		…
2134	{	2396	{
2135	clear_pending (EV_A_ (W)w);	2397	clear_pending (EV_A_ (W)w);
2136	if (expect_false (!ev_is_active (w)))	2398	if (expect_false (!ev_is_active (w)))
2137	return;	2399	return;
2138		2400
2139	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2401	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2140		2402
2141	EV_FREQUENT_CHECK;	2403	EV_FREQUENT_CHECK;
2142		2404
2143	wlist_del (&anfds[w->fd].head, (WL)w);	2405	wlist_del (&anfds[w->fd].head, (WL)w);
2144	ev_stop (EV_A_ (W)w);	2406	ev_stop (EV_A_ (W)w);
…		…
2154	if (expect_false (ev_is_active (w)))	2416	if (expect_false (ev_is_active (w)))
2155	return;	2417	return;
2156		2418
2157	ev_at (w) += mn_now;	2419	ev_at (w) += mn_now;
2158		2420
2159	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2421	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2160		2422
2161	EV_FREQUENT_CHECK;	2423	EV_FREQUENT_CHECK;
2162		2424
2163	++timercnt;	2425	++timercnt;
2164	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);	2426	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
…		…
2167	ANHE_at_cache (timers [ev_active (w)]);	2429	ANHE_at_cache (timers [ev_active (w)]);
2168	upheap (timers, ev_active (w));	2430	upheap (timers, ev_active (w));
2169		2431
2170	EV_FREQUENT_CHECK;	2432	EV_FREQUENT_CHECK;
2171		2433
2172	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2434	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2173	}	2435	}
2174		2436
2175	void noinline	2437	void noinline
2176	ev_timer_stop (EV_P_ ev_timer *w)	2438	ev_timer_stop (EV_P_ ev_timer *w)
2177	{	2439	{
…		…
2182	EV_FREQUENT_CHECK;	2444	EV_FREQUENT_CHECK;
2183		2445
2184	{	2446	{
2185	int active = ev_active (w);	2447	int active = ev_active (w);
2186		2448
2187	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2449	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2188		2450
2189	--timercnt;	2451	--timercnt;
2190		2452
2191	if (expect_true (active < timercnt + HEAP0))	2453	if (expect_true (active < timercnt + HEAP0))
2192	{	2454	{
…		…
2225	}	2487	}
2226		2488
2227	EV_FREQUENT_CHECK;	2489	EV_FREQUENT_CHECK;
2228	}	2490	}
2229		2491
		2492	ev_tstamp
		2493	ev_timer_remaining (EV_P_ ev_timer *w)
		2494	{
		2495	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
		2496	}
		2497
2230	#if EV_PERIODIC_ENABLE	2498	#if EV_PERIODIC_ENABLE
2231	void noinline	2499	void noinline
2232	ev_periodic_start (EV_P_ ev_periodic *w)	2500	ev_periodic_start (EV_P_ ev_periodic *w)
2233	{	2501	{
2234	if (expect_false (ev_is_active (w)))	2502	if (expect_false (ev_is_active (w)))
…		…
2236		2504
2237	if (w->reschedule_cb)	2505	if (w->reschedule_cb)
2238	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2506	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2239	else if (w->interval)	2507	else if (w->interval)
2240	{	2508	{
2241	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2509	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2242	/* this formula differs from the one in periodic_reify because we do not always round up */	2510	/* this formula differs from the one in periodic_reify because we do not always round up */
2243	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2511	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2244	}	2512	}
2245	else	2513	else
2246	ev_at (w) = w->offset;	2514	ev_at (w) = w->offset;
…		…
2254	ANHE_at_cache (periodics [ev_active (w)]);	2522	ANHE_at_cache (periodics [ev_active (w)]);
2255	upheap (periodics, ev_active (w));	2523	upheap (periodics, ev_active (w));
2256		2524
2257	EV_FREQUENT_CHECK;	2525	EV_FREQUENT_CHECK;
2258		2526
2259	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2527	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2260	}	2528	}
2261		2529
2262	void noinline	2530	void noinline
2263	ev_periodic_stop (EV_P_ ev_periodic *w)	2531	ev_periodic_stop (EV_P_ ev_periodic *w)
2264	{	2532	{
…		…
2269	EV_FREQUENT_CHECK;	2537	EV_FREQUENT_CHECK;
2270		2538
2271	{	2539	{
2272	int active = ev_active (w);	2540	int active = ev_active (w);
2273		2541
2274	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2542	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2275		2543
2276	--periodiccnt;	2544	--periodiccnt;
2277		2545
2278	if (expect_true (active < periodiccnt + HEAP0))	2546	if (expect_true (active < periodiccnt + HEAP0))
2279	{	2547	{
…		…
2302		2570
2303	void noinline	2571	void noinline
2304	ev_signal_start (EV_P_ ev_signal *w)	2572	ev_signal_start (EV_P_ ev_signal *w)
2305	{	2573	{
2306	#if EV_MULTIPLICITY	2574	#if EV_MULTIPLICITY
2307	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2575	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2308	#endif	2576	#endif
2309	if (expect_false (ev_is_active (w)))	2577	if (expect_false (ev_is_active (w)))
2310	return;	2578	return;
2311		2579
2312	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2580	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2313		2581
2314	evpipe_init (EV_A);	2582	evpipe_init (EV_A);
2315		2583
2316	EV_FREQUENT_CHECK;	2584	EV_FREQUENT_CHECK;
2317		2585
…		…
2320	sigset_t full, prev;	2588	sigset_t full, prev;
2321	sigfillset (&full);	2589	sigfillset (&full);
2322	sigprocmask (SIG_SETMASK, &full, &prev);	2590	sigprocmask (SIG_SETMASK, &full, &prev);
2323	#endif	2591	#endif
2324		2592
2325	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2593	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2326		2594
2327	#ifndef _WIN32	2595	#ifndef _WIN32
2328	sigprocmask (SIG_SETMASK, &prev, 0);	2596	sigprocmask (SIG_SETMASK, &prev, 0);
2329	#endif	2597	#endif
2330	}	2598	}
…		…
2335	if (!((WL)w)->next)	2603	if (!((WL)w)->next)
2336	{	2604	{
2337	#if _WIN32	2605	#if _WIN32
2338	signal (w->signum, ev_sighandler);	2606	signal (w->signum, ev_sighandler);
2339	#else	2607	#else
2340	struct sigaction sa;	2608	struct sigaction sa = { };
2341	sa.sa_handler = ev_sighandler;	2609	sa.sa_handler = ev_sighandler;
2342	sigfillset (&sa.sa_mask);	2610	sigfillset (&sa.sa_mask);
2343	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2611	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2344	sigaction (w->signum, &sa, 0);	2612	sigaction (w->signum, &sa, 0);
2345	#endif	2613	#endif
…		…
2368		2636
2369	void	2637	void
2370	ev_child_start (EV_P_ ev_child *w)	2638	ev_child_start (EV_P_ ev_child *w)
2371	{	2639	{
2372	#if EV_MULTIPLICITY	2640	#if EV_MULTIPLICITY
2373	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2641	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2374	#endif	2642	#endif
2375	if (expect_false (ev_is_active (w)))	2643	if (expect_false (ev_is_active (w)))
2376	return;	2644	return;
2377		2645
2378	EV_FREQUENT_CHECK;	2646	EV_FREQUENT_CHECK;
…		…
2403	# ifdef _WIN32	2671	# ifdef _WIN32
2404	# undef lstat	2672	# undef lstat
2405	# define lstat(a,b) _stati64 (a,b)	2673	# define lstat(a,b) _stati64 (a,b)
2406	# endif	2674	# endif
2407		2675
2408	#define DEF_STAT_INTERVAL 5.0074891	2676	#define DEF_STAT_INTERVAL 5.0074891
		2677	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2409	#define MIN_STAT_INTERVAL 0.1074891	2678	#define MIN_STAT_INTERVAL 0.1074891
2410		2679
2411	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2680	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2412		2681
2413	#if EV_USE_INOTIFY	2682	#if EV_USE_INOTIFY
2414	# define EV_INOTIFY_BUFSIZE 8192	2683	# define EV_INOTIFY_BUFSIZE 8192
…		…
2418	{	2687	{
2419	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);	2688	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);
2420		2689
2421	if (w->wd < 0)	2690	if (w->wd < 0)
2422	{	2691	{
		2692	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2423	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2693	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2424		2694
2425	/* monitor some parent directory for speedup hints */	2695	/* monitor some parent directory for speedup hints */
2426	/* note that exceeding the hardcoded limit is not a correctness issue, */	2696	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2427	/* but an efficiency issue only */	2697	/* but an efficiency issue only */
2428	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2698	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2429	{	2699	{
2430	char path [4096];	2700	char path [4096];
2431	strcpy (path, w->path);	2701	strcpy (path, w->path);
…		…
2435	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2705	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2436	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2706	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2437		2707
2438	char *pend = strrchr (path, '/');	2708	char *pend = strrchr (path, '/');
2439		2709
2440	if (!pend)	2710	if (!pend || pend == path)
2441	break; /* whoops, no '/', complain to your admin */	2711	break;
2442		2712
2443	*pend = 0;	2713	*pend = 0;
2444	w->wd = inotify_add_watch (fs_fd, path, mask);	2714	w->wd = inotify_add_watch (fs_fd, path, mask);
2445	}	2715	}
2446	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2716	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2447	}	2717	}
2448	}	2718	}
2449	else
2450	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2451		2719
2452	if (w->wd >= 0)	2720	if (w->wd >= 0)
		2721	{
2453	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2722	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2723
		2724	/* now local changes will be tracked by inotify, but remote changes won't */
		2725	/* unless the filesystem it known to be local, we therefore still poll */
		2726	/* also do poll on <2.6.25, but with normal frequency */
		2727	struct statfs sfs;
		2728
		2729	if (fs_2625 && !statfs (w->path, &sfs))
		2730	if (sfs.f_type == 0x1373 /* devfs */
		2731	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2732	|| sfs.f_type == 0x3153464a /* jfs */
		2733	|| sfs.f_type == 0x52654973 /* reiser3 */
		2734	|| sfs.f_type == 0x01021994 /* tempfs */
		2735	|| sfs.f_type == 0x58465342 /* xfs */)
		2736	return;
		2737
		2738	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2739	ev_timer_again (EV_A_ &w->timer);
		2740	}
2454	}	2741	}
2455		2742
2456	static void noinline	2743	static void noinline
2457	infy_del (EV_P_ ev_stat *w)	2744	infy_del (EV_P_ ev_stat *w)
2458	{	2745	{
…		…
2472		2759
2473	static void noinline	2760	static void noinline
2474	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2761	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2475	{	2762	{
2476	if (slot < 0)	2763	if (slot < 0)
2477	/* overflow, need to check for all hahs slots */	2764	/* overflow, need to check for all hash slots */
2478	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2765	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2479	infy_wd (EV_A_ slot, wd, ev);	2766	infy_wd (EV_A_ slot, wd, ev);
2480	else	2767	else
2481	{	2768	{
2482	WL w_;	2769	WL w_;
…		…
2488		2775
2489	if (w->wd == wd || wd == -1)	2776	if (w->wd == wd || wd == -1)
2490	{	2777	{
2491	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2778	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2492	{	2779	{
		2780	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2493	w->wd = -1;	2781	w->wd = -1;
2494	infy_add (EV_A_ w); /* re-add, no matter what */	2782	infy_add (EV_A_ w); /* re-add, no matter what */
2495	}	2783	}
2496		2784
2497	stat_timer_cb (EV_A_ &w->timer, 0);	2785	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2510		2798
2511	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2799	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2512	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2800	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2513	}	2801	}
2514		2802
2515	void inline_size	2803	inline_size void
		2804	check_2625 (EV_P)
		2805	{
		2806	/* kernels < 2.6.25 are borked
		2807	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2808	*/
		2809	struct utsname buf;
		2810	int major, minor, micro;
		2811
		2812	if (uname (&buf))
		2813	return;
		2814
		2815	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2816	return;
		2817
		2818	if (major < 2
		2819	|| (major == 2 && minor < 6)
		2820	|| (major == 2 && minor == 6 && micro < 25))
		2821	return;
		2822
		2823	fs_2625 = 1;
		2824	}
		2825
		2826	inline_size void
2516	infy_init (EV_P)	2827	infy_init (EV_P)
2517	{	2828	{
2518	if (fs_fd != -2)	2829	if (fs_fd != -2)
2519	return;	2830	return;
		2831
		2832	fs_fd = -1;
		2833
		2834	check_2625 (EV_A);
2520		2835
2521	fs_fd = inotify_init ();	2836	fs_fd = inotify_init ();
2522		2837
2523	if (fs_fd >= 0)	2838	if (fs_fd >= 0)
2524	{	2839	{
…		…
2526	ev_set_priority (&fs_w, EV_MAXPRI);	2841	ev_set_priority (&fs_w, EV_MAXPRI);
2527	ev_io_start (EV_A_ &fs_w);	2842	ev_io_start (EV_A_ &fs_w);
2528	}	2843	}
2529	}	2844	}
2530		2845
2531	void inline_size	2846	inline_size void
2532	infy_fork (EV_P)	2847	infy_fork (EV_P)
2533	{	2848	{
2534	int slot;	2849	int slot;
2535		2850
2536	if (fs_fd < 0)	2851	if (fs_fd < 0)
…		…
2552	w->wd = -1;	2867	w->wd = -1;
2553		2868
2554	if (fs_fd >= 0)	2869	if (fs_fd >= 0)
2555	infy_add (EV_A_ w); /* re-add, no matter what */	2870	infy_add (EV_A_ w); /* re-add, no matter what */
2556	else	2871	else
2557	ev_timer_start (EV_A_ &w->timer);	2872	ev_timer_again (EV_A_ &w->timer);
2558	}	2873	}
2559
2560	}	2874	}
2561	}	2875	}
2562		2876
		2877	#endif
		2878
		2879	#ifdef _WIN32
		2880	# define EV_LSTAT(p,b) _stati64 (p, b)
		2881	#else
		2882	# define EV_LSTAT(p,b) lstat (p, b)
2563	#endif	2883	#endif
2564		2884
2565	void	2885	void
2566	ev_stat_stat (EV_P_ ev_stat *w)	2886	ev_stat_stat (EV_P_ ev_stat *w)
2567	{	2887	{
…		…
2594	|| w->prev.st_atime != w->attr.st_atime	2914	|| w->prev.st_atime != w->attr.st_atime
2595	|| w->prev.st_mtime != w->attr.st_mtime	2915	|| w->prev.st_mtime != w->attr.st_mtime
2596	|| w->prev.st_ctime != w->attr.st_ctime	2916	|| w->prev.st_ctime != w->attr.st_ctime
2597	) {	2917	) {
2598	#if EV_USE_INOTIFY	2918	#if EV_USE_INOTIFY
		2919	if (fs_fd >= 0)
		2920	{
2599	infy_del (EV_A_ w);	2921	infy_del (EV_A_ w);
2600	infy_add (EV_A_ w);	2922	infy_add (EV_A_ w);
2601	ev_stat_stat (EV_A_ w); /* avoid race... */	2923	ev_stat_stat (EV_A_ w); /* avoid race... */
		2924	}
2602	#endif	2925	#endif
2603		2926
2604	ev_feed_event (EV_A_ w, EV_STAT);	2927	ev_feed_event (EV_A_ w, EV_STAT);
2605	}	2928	}
2606	}	2929	}
…		…
2609	ev_stat_start (EV_P_ ev_stat *w)	2932	ev_stat_start (EV_P_ ev_stat *w)
2610	{	2933	{
2611	if (expect_false (ev_is_active (w)))	2934	if (expect_false (ev_is_active (w)))
2612	return;	2935	return;
2613		2936
2614	/* since we use memcmp, we need to clear any padding data etc. */
2615	memset (&w->prev, 0, sizeof (ev_statdata));
2616	memset (&w->attr, 0, sizeof (ev_statdata));
2617
2618	ev_stat_stat (EV_A_ w);	2937	ev_stat_stat (EV_A_ w);
2619		2938
		2939	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2620	if (w->interval < MIN_STAT_INTERVAL)	2940	w->interval = MIN_STAT_INTERVAL;
2621	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2622		2941
2623	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2942	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2624	ev_set_priority (&w->timer, ev_priority (w));	2943	ev_set_priority (&w->timer, ev_priority (w));
2625		2944
2626	#if EV_USE_INOTIFY	2945	#if EV_USE_INOTIFY
2627	infy_init (EV_A);	2946	infy_init (EV_A);
2628		2947
2629	if (fs_fd >= 0)	2948	if (fs_fd >= 0)
2630	infy_add (EV_A_ w);	2949	infy_add (EV_A_ w);
2631	else	2950	else
2632	#endif	2951	#endif
2633	ev_timer_start (EV_A_ &w->timer);	2952	ev_timer_again (EV_A_ &w->timer);
2634		2953
2635	ev_start (EV_A_ (W)w, 1);	2954	ev_start (EV_A_ (W)w, 1);
2636		2955
2637	EV_FREQUENT_CHECK;	2956	EV_FREQUENT_CHECK;
2638	}	2957	}
…		…
2808	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3127	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2809	}	3128	}
2810	}	3129	}
2811	}	3130	}
2812		3131
		3132	static void
		3133	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3134	{
		3135	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3136
		3137	ev_embed_stop (EV_A_ w);
		3138
		3139	{
		3140	struct ev_loop *loop = w->other;
		3141
		3142	ev_loop_fork (EV_A);
		3143	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3144	}
		3145
		3146	ev_embed_start (EV_A_ w);
		3147	}
		3148
2813	#if 0	3149	#if 0
2814	static void	3150	static void
2815	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3151	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2816	{	3152	{
2817	ev_idle_stop (EV_A_ idle);	3153	ev_idle_stop (EV_A_ idle);
…		…
2824	if (expect_false (ev_is_active (w)))	3160	if (expect_false (ev_is_active (w)))
2825	return;	3161	return;
2826		3162
2827	{	3163	{
2828	struct ev_loop *loop = w->other;	3164	struct ev_loop *loop = w->other;
2829	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3165	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2830	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3166	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2831	}	3167	}
2832		3168
2833	EV_FREQUENT_CHECK;	3169	EV_FREQUENT_CHECK;
2834		3170
…		…
2837		3173
2838	ev_prepare_init (&w->prepare, embed_prepare_cb);	3174	ev_prepare_init (&w->prepare, embed_prepare_cb);
2839	ev_set_priority (&w->prepare, EV_MINPRI);	3175	ev_set_priority (&w->prepare, EV_MINPRI);
2840	ev_prepare_start (EV_A_ &w->prepare);	3176	ev_prepare_start (EV_A_ &w->prepare);
2841		3177
		3178	ev_fork_init (&w->fork, embed_fork_cb);
		3179	ev_fork_start (EV_A_ &w->fork);
		3180
2842	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3181	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2843		3182
2844	ev_start (EV_A_ (W)w, 1);	3183	ev_start (EV_A_ (W)w, 1);
2845		3184
2846	EV_FREQUENT_CHECK;	3185	EV_FREQUENT_CHECK;
…		…
2853	if (expect_false (!ev_is_active (w)))	3192	if (expect_false (!ev_is_active (w)))
2854	return;	3193	return;
2855		3194
2856	EV_FREQUENT_CHECK;	3195	EV_FREQUENT_CHECK;
2857		3196
2858	ev_io_stop (EV_A_ &w->io);	3197	ev_io_stop (EV_A_ &w->io);
2859	ev_prepare_stop (EV_A_ &w->prepare);	3198	ev_prepare_stop (EV_A_ &w->prepare);
2860		3199	ev_fork_stop (EV_A_ &w->fork);
2861	ev_stop (EV_A_ (W)w);
2862		3200
2863	EV_FREQUENT_CHECK;	3201	EV_FREQUENT_CHECK;
2864	}	3202	}
2865	#endif	3203	#endif
2866		3204
…		…
2963	once_cb (EV_P_ struct ev_once *once, int revents)	3301	once_cb (EV_P_ struct ev_once *once, int revents)
2964	{	3302	{
2965	void (*cb)(int revents, void *arg) = once->cb;	3303	void (*cb)(int revents, void *arg) = once->cb;
2966	void *arg = once->arg;	3304	void *arg = once->arg;
2967		3305
2968	ev_io_stop (EV_A_ &once->io);	3306	ev_io_stop (EV_A_ &once->io);
2969	ev_timer_stop (EV_A_ &once->to);	3307	ev_timer_stop (EV_A_ &once->to);
2970	ev_free (once);	3308	ev_free (once);
2971		3309
2972	cb (revents, arg);	3310	cb (revents, arg);
2973	}	3311	}
2974		3312
2975	static void	3313	static void
2976	once_cb_io (EV_P_ ev_io *w, int revents)	3314	once_cb_io (EV_P_ ev_io *w, int revents)
2977	{	3315	{
2978	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3316	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3317
		3318	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2979	}	3319	}
2980		3320
2981	static void	3321	static void
2982	once_cb_to (EV_P_ ev_timer *w, int revents)	3322	once_cb_to (EV_P_ ev_timer *w, int revents)
2983	{	3323	{
2984	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3324	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3325
		3326	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2985	}	3327	}
2986		3328
2987	void	3329	void
2988	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3330	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2989	{	3331	{
…		…
3011	ev_timer_set (&once->to, timeout, 0.);	3353	ev_timer_set (&once->to, timeout, 0.);
3012	ev_timer_start (EV_A_ &once->to);	3354	ev_timer_start (EV_A_ &once->to);
3013	}	3355	}
3014	}	3356	}
3015		3357
		3358	/*****************************************************************************/
		3359
		3360	#if EV_WALK_ENABLE
		3361	void
		3362	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3363	{
		3364	int i, j;
		3365	ev_watcher_list *wl, *wn;
		3366
		3367	if (types & (EV_IO | EV_EMBED))
		3368	for (i = 0; i < anfdmax; ++i)
		3369	for (wl = anfds [i].head; wl; )
		3370	{
		3371	wn = wl->next;
		3372
		3373	#if EV_EMBED_ENABLE
		3374	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3375	{
		3376	if (types & EV_EMBED)
		3377	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3378	}
		3379	else
		3380	#endif
		3381	#if EV_USE_INOTIFY
		3382	if (ev_cb ((ev_io *)wl) == infy_cb)
		3383	;
		3384	else
		3385	#endif
		3386	if ((ev_io *)wl != &pipe_w)
		3387	if (types & EV_IO)
		3388	cb (EV_A_ EV_IO, wl);
		3389
		3390	wl = wn;
		3391	}
		3392
		3393	if (types & (EV_TIMER | EV_STAT))
		3394	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3395	#if EV_STAT_ENABLE
		3396	/*TODO: timer is not always active*/
		3397	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3398	{
		3399	if (types & EV_STAT)
		3400	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3401	}
		3402	else
		3403	#endif
		3404	if (types & EV_TIMER)
		3405	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3406
		3407	#if EV_PERIODIC_ENABLE
		3408	if (types & EV_PERIODIC)
		3409	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3410	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3411	#endif
		3412
		3413	#if EV_IDLE_ENABLE
		3414	if (types & EV_IDLE)
		3415	for (j = NUMPRI; i--; )
		3416	for (i = idlecnt [j]; i--; )
		3417	cb (EV_A_ EV_IDLE, idles [j][i]);
		3418	#endif
		3419
		3420	#if EV_FORK_ENABLE
		3421	if (types & EV_FORK)
		3422	for (i = forkcnt; i--; )
		3423	if (ev_cb (forks [i]) != embed_fork_cb)
		3424	cb (EV_A_ EV_FORK, forks [i]);
		3425	#endif
		3426
		3427	#if EV_ASYNC_ENABLE
		3428	if (types & EV_ASYNC)
		3429	for (i = asynccnt; i--; )
		3430	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3431	#endif
		3432
		3433	if (types & EV_PREPARE)
		3434	for (i = preparecnt; i--; )
		3435	#if EV_EMBED_ENABLE
		3436	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3437	#endif
		3438	cb (EV_A_ EV_PREPARE, prepares [i]);
		3439
		3440	if (types & EV_CHECK)
		3441	for (i = checkcnt; i--; )
		3442	cb (EV_A_ EV_CHECK, checks [i]);
		3443
		3444	if (types & EV_SIGNAL)
		3445	for (i = 0; i < signalmax; ++i)
		3446	for (wl = signals [i].head; wl; )
		3447	{
		3448	wn = wl->next;
		3449	cb (EV_A_ EV_SIGNAL, wl);
		3450	wl = wn;
		3451	}
		3452
		3453	if (types & EV_CHILD)
		3454	for (i = EV_PID_HASHSIZE; i--; )
		3455	for (wl = childs [i]; wl; )
		3456	{
		3457	wn = wl->next;
		3458	cb (EV_A_ EV_CHILD, wl);
		3459	wl = wn;
		3460	}
		3461	/* EV_STAT 0x00001000 /* stat data changed */
		3462	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3463	}
		3464	#endif
		3465
3016	#if EV_MULTIPLICITY	3466	#if EV_MULTIPLICITY
3017	#include "ev_wrap.h"	3467	#include "ev_wrap.h"
3018	#endif	3468	#endif
3019		3469
3020	#ifdef __cplusplus	3470	#ifdef __cplusplus

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