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Comparing libev/ev.c (file contents):
Revision 1.248 by root, Wed May 21 23:25:21 2008 UTC vs.
Revision 1.291 by root, Mon Jun 29 04:44:18 2009 UTC

1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without modifica-	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* tion, are permitted provided that the following conditions are met:	8	* tion, are permitted provided that the following conditions are met:
9	*	9	*
…		…
47	# include EV_CONFIG_H	47	# include EV_CONFIG_H
48	# else	48	# else
49	# include "config.h"	49	# include "config.h"
50	# endif	50	# endif
51		51
		52	# if HAVE_CLOCK_SYSCALL
		53	# ifndef EV_USE_CLOCK_SYSCALL
		54	# define EV_USE_CLOCK_SYSCALL 1
		55	# ifndef EV_USE_REALTIME
		56	# define EV_USE_REALTIME 0
		57	# endif
		58	# ifndef EV_USE_MONOTONIC
		59	# define EV_USE_MONOTONIC 1
		60	# endif
		61	# endif
		62	# elif !defined(EV_USE_CLOCK_SYSCALL)
		63	# define EV_USE_CLOCK_SYSCALL 0
		64	# endif
		65
52	# if HAVE_CLOCK_GETTIME	66	# if HAVE_CLOCK_GETTIME
53	# ifndef EV_USE_MONOTONIC	67	# ifndef EV_USE_MONOTONIC
54	# define EV_USE_MONOTONIC 1	68	# define EV_USE_MONOTONIC 1
55	# endif	69	# endif
56	# ifndef EV_USE_REALTIME	70	# ifndef EV_USE_REALTIME
57	# define EV_USE_REALTIME 1	71	# define EV_USE_REALTIME 0
58	# endif	72	# endif
59	# else	73	# else
60	# ifndef EV_USE_MONOTONIC	74	# ifndef EV_USE_MONOTONIC
61	# define EV_USE_MONOTONIC 0	75	# define EV_USE_MONOTONIC 0
62	# endif	76	# endif
…		…
126	# define EV_USE_EVENTFD 1	140	# define EV_USE_EVENTFD 1
127	# else	141	# else
128	# define EV_USE_EVENTFD 0	142	# define EV_USE_EVENTFD 0
129	# endif	143	# endif
130	# endif	144	# endif
131		145
132	#endif	146	#endif
133		147
134	#include <math.h>	148	#include <math.h>
135	#include <stdlib.h>	149	#include <stdlib.h>
136	#include <fcntl.h>	150	#include <fcntl.h>
…		…
154	#ifndef _WIN32	168	#ifndef _WIN32
155	# include <sys/time.h>	169	# include <sys/time.h>
156	# include <sys/wait.h>	170	# include <sys/wait.h>
157	# include <unistd.h>	171	# include <unistd.h>
158	#else	172	#else
		173	# include <io.h>
159	# define WIN32_LEAN_AND_MEAN	174	# define WIN32_LEAN_AND_MEAN
160	# include <windows.h>	175	# include <windows.h>
161	# ifndef EV_SELECT_IS_WINSOCKET	176	# ifndef EV_SELECT_IS_WINSOCKET
162	# define EV_SELECT_IS_WINSOCKET 1	177	# define EV_SELECT_IS_WINSOCKET 1
163	# endif	178	# endif
164	#endif	179	#endif
165		180
166	/* this block tries to deduce configuration from header-defined symbols and defaults */	181	/* this block tries to deduce configuration from header-defined symbols and defaults */
167		182
		183	#ifndef EV_USE_CLOCK_SYSCALL
		184	# if __linux && __GLIBC__ >= 2
		185	# define EV_USE_CLOCK_SYSCALL 1
		186	# else
		187	# define EV_USE_CLOCK_SYSCALL 0
		188	# endif
		189	#endif
		190
168	#ifndef EV_USE_MONOTONIC	191	#ifndef EV_USE_MONOTONIC
		192	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
		193	# define EV_USE_MONOTONIC 1
		194	# else
169	# define EV_USE_MONOTONIC 0	195	# define EV_USE_MONOTONIC 0
		196	# endif
170	#endif	197	#endif
171		198
172	#ifndef EV_USE_REALTIME	199	#ifndef EV_USE_REALTIME
173	# define EV_USE_REALTIME 0	200	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174	#endif	201	#endif
175		202
176	#ifndef EV_USE_NANOSLEEP	203	#ifndef EV_USE_NANOSLEEP
		204	# if _POSIX_C_SOURCE >= 199309L
		205	# define EV_USE_NANOSLEEP 1
		206	# else
177	# define EV_USE_NANOSLEEP 0	207	# define EV_USE_NANOSLEEP 0
		208	# endif
178	#endif	209	#endif
179		210
180	#ifndef EV_USE_SELECT	211	#ifndef EV_USE_SELECT
181	# define EV_USE_SELECT 1	212	# define EV_USE_SELECT 1
182	#endif	213	#endif
…		…
235	# else	266	# else
236	# define EV_USE_EVENTFD 0	267	# define EV_USE_EVENTFD 0
237	# endif	268	# endif
238	#endif	269	#endif
239		270
		271	#if 0 /* debugging */
		272	# define EV_VERIFY 3
		273	# define EV_USE_4HEAP 1
		274	# define EV_HEAP_CACHE_AT 1
		275	#endif
		276
		277	#ifndef EV_VERIFY
		278	# define EV_VERIFY !EV_MINIMAL
		279	#endif
		280
240	#ifndef EV_USE_4HEAP	281	#ifndef EV_USE_4HEAP
241	# define EV_USE_4HEAP !EV_MINIMAL	282	# define EV_USE_4HEAP !EV_MINIMAL
242	#endif	283	#endif
243		284
244	#ifndef EV_HEAP_CACHE_AT	285	#ifndef EV_HEAP_CACHE_AT
245	# define EV_HEAP_CACHE_AT !EV_MINIMAL	286	# define EV_HEAP_CACHE_AT !EV_MINIMAL
		287	#endif
		288
		289	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		290	/* which makes programs even slower. might work on other unices, too. */
		291	#if EV_USE_CLOCK_SYSCALL
		292	# include <syscall.h>
		293	# ifdef SYS_clock_gettime
		294	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		295	# undef EV_USE_MONOTONIC
		296	# define EV_USE_MONOTONIC 1
		297	# else
		298	# undef EV_USE_CLOCK_SYSCALL
		299	# define EV_USE_CLOCK_SYSCALL 0
		300	# endif
246	#endif	301	#endif
247		302
248	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	303	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
249		304
250	#ifndef CLOCK_MONOTONIC	305	#ifndef CLOCK_MONOTONIC
…		…
267	# include <sys/select.h>	322	# include <sys/select.h>
268	# endif	323	# endif
269	#endif	324	#endif
270		325
271	#if EV_USE_INOTIFY	326	#if EV_USE_INOTIFY
		327	# include <sys/utsname.h>
		328	# include <sys/statfs.h>
272	# include <sys/inotify.h>	329	# include <sys/inotify.h>
		330	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
		331	# ifndef IN_DONT_FOLLOW
		332	# undef EV_USE_INOTIFY
		333	# define EV_USE_INOTIFY 0
		334	# endif
273	#endif	335	#endif
274		336
275	#if EV_SELECT_IS_WINSOCKET	337	#if EV_SELECT_IS_WINSOCKET
276	# include <winsock.h>	338	# include <winsock.h>
277	#endif	339	#endif
…		…
288	# endif	350	# endif
289	#endif	351	#endif
290		352
291	/**/	353	/**/
292		354
293	/* undefined or zero: no verification done or available */
294	/* 1 or higher: ev_loop_verify function available */
295	/* 2 or higher: ev_loop_verify is called frequently */
296	#define EV_VERIFY 1
297
298	#if EV_VERIFY > 1	355	#if EV_VERIFY >= 3
299	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)	356	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
300	#else	357	#else
301	# define EV_FREQUENT_CHECK do { } while (0)	358	# define EV_FREQUENT_CHECK do { } while (0)
302	#endif	359	#endif
303		360
…		…
347	typedef ev_watcher_time *WT;	404	typedef ev_watcher_time *WT;
348		405
349	#define ev_active(w) ((W)(w))->active	406	#define ev_active(w) ((W)(w))->active
350	#define ev_at(w) ((WT)(w))->at	407	#define ev_at(w) ((WT)(w))->at
351		408
352	#if EV_USE_MONOTONIC	409	#if EV_USE_REALTIME
353	/* sig_atomic_t is used to avoid per-thread variables or locking but still */	410	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
354	/* giving it a reasonably high chance of working on typical architetcures */	411	/* giving it a reasonably high chance of working on typical architetcures */
		412	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		413	#endif
		414
		415	#if EV_USE_MONOTONIC
355	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	416	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
356	#endif	417	#endif
357		418
358	#ifdef _WIN32	419	#ifdef _WIN32
359	# include "ev_win32.c"	420	# include "ev_win32.c"
…		…
368	{	429	{
369	syserr_cb = cb;	430	syserr_cb = cb;
370	}	431	}
371		432
372	static void noinline	433	static void noinline
373	syserr (const char *msg)	434	ev_syserr (const char *msg)
374	{	435	{
375	if (!msg)	436	if (!msg)
376	msg = "(libev) system error";	437	msg = "(libev) system error";
377		438
378	if (syserr_cb)	439	if (syserr_cb)
…		…
424	#define ev_malloc(size) ev_realloc (0, (size))	485	#define ev_malloc(size) ev_realloc (0, (size))
425	#define ev_free(ptr) ev_realloc ((ptr), 0)	486	#define ev_free(ptr) ev_realloc ((ptr), 0)
426		487
427	/*****************************************************************************/	488	/*****************************************************************************/
428		489
		490	/* file descriptor info structure */
429	typedef struct	491	typedef struct
430	{	492	{
431	WL head;	493	WL head;
432	unsigned char events;	494	unsigned char events; /* the events watched for */
		495	unsigned char reify; /* flag set when this ANFD needs reification */
		496	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
433	unsigned char reify;	497	unsigned char unused;
		498	#if EV_USE_EPOLL
		499	unsigned int egen; /* generation counter to counter epoll bugs */
		500	#endif
434	#if EV_SELECT_IS_WINSOCKET	501	#if EV_SELECT_IS_WINSOCKET
435	SOCKET handle;	502	SOCKET handle;
436	#endif	503	#endif
437	} ANFD;	504	} ANFD;
438		505
		506	/* stores the pending event set for a given watcher */
439	typedef struct	507	typedef struct
440	{	508	{
441	W w;	509	W w;
442	int events;	510	int events; /* the pending event set for the given watcher */
443	} ANPENDING;	511	} ANPENDING;
444		512
445	#if EV_USE_INOTIFY	513	#if EV_USE_INOTIFY
446	/* hash table entry per inotify-id */	514	/* hash table entry per inotify-id */
447	typedef struct	515	typedef struct
…		…
450	} ANFS;	518	} ANFS;
451	#endif	519	#endif
452		520
453	/* Heap Entry */	521	/* Heap Entry */
454	#if EV_HEAP_CACHE_AT	522	#if EV_HEAP_CACHE_AT
		523	/* a heap element */
455	typedef struct {	524	typedef struct {
456	ev_tstamp at;	525	ev_tstamp at;
457	WT w;	526	WT w;
458	} ANHE;	527	} ANHE;
459		528
460	#define ANHE_w(he) (he).w /* access watcher, read-write */	529	#define ANHE_w(he) (he).w /* access watcher, read-write */
461	#define ANHE_at(he) (he).at /* access cached at, read-only */	530	#define ANHE_at(he) (he).at /* access cached at, read-only */
462	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */	531	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
463	#else	532	#else
		533	/* a heap element */
464	typedef WT ANHE;	534	typedef WT ANHE;
465		535
466	#define ANHE_w(he) (he)	536	#define ANHE_w(he) (he)
467	#define ANHE_at(he) (he)->at	537	#define ANHE_at(he) (he)->at
468	#define ANHE_at_cache(he)	538	#define ANHE_at_cache(he)
…		…
498		568
499	ev_tstamp	569	ev_tstamp
500	ev_time (void)	570	ev_time (void)
501	{	571	{
502	#if EV_USE_REALTIME	572	#if EV_USE_REALTIME
		573	if (expect_true (have_realtime))
		574	{
503	struct timespec ts;	575	struct timespec ts;
504	clock_gettime (CLOCK_REALTIME, &ts);	576	clock_gettime (CLOCK_REALTIME, &ts);
505	return ts.tv_sec + ts.tv_nsec * 1e-9;	577	return ts.tv_sec + ts.tv_nsec * 1e-9;
506	#else	578	}
		579	#endif
		580
507	struct timeval tv;	581	struct timeval tv;
508	gettimeofday (&tv, 0);	582	gettimeofday (&tv, 0);
509	return tv.tv_sec + tv.tv_usec * 1e-6;	583	return tv.tv_sec + tv.tv_usec * 1e-6;
510	#endif
511	}	584	}
512		585
513	ev_tstamp inline_size	586	inline_size ev_tstamp
514	get_clock (void)	587	get_clock (void)
515	{	588	{
516	#if EV_USE_MONOTONIC	589	#if EV_USE_MONOTONIC
517	if (expect_true (have_monotonic))	590	if (expect_true (have_monotonic))
518	{	591	{
…		…
551	struct timeval tv;	624	struct timeval tv;
552		625
553	tv.tv_sec = (time_t)delay;	626	tv.tv_sec = (time_t)delay;
554	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	627	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
555		628
		629	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		630	/* somehting nto guaranteed by newer posix versions, but guaranteed */
		631	/* by older ones */
556	select (0, 0, 0, 0, &tv);	632	select (0, 0, 0, 0, &tv);
557	#endif	633	#endif
558	}	634	}
559	}	635	}
560		636
561	/*****************************************************************************/	637	/*****************************************************************************/
562		638
563	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	639	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
564		640
565	int inline_size	641	/* find a suitable new size for the given array, */
		642	/* hopefully by rounding to a ncie-to-malloc size */
		643	inline_size int
566	array_nextsize (int elem, int cur, int cnt)	644	array_nextsize (int elem, int cur, int cnt)
567	{	645	{
568	int ncur = cur + 1;	646	int ncur = cur + 1;
569		647
570	do	648	do
…		…
587	array_realloc (int elem, void *base, int *cur, int cnt)	665	array_realloc (int elem, void *base, int *cur, int cnt)
588	{	666	{
589	*cur = array_nextsize (elem, *cur, cnt);	667	*cur = array_nextsize (elem, *cur, cnt);
590	return ev_realloc (base, elem * *cur);	668	return ev_realloc (base, elem * *cur);
591	}	669	}
		670
		671	#define array_init_zero(base,count) \
		672	memset ((void *)(base), 0, sizeof (*(base)) * (count))
592		673
593	#define array_needsize(type,base,cur,cnt,init) \	674	#define array_needsize(type,base,cur,cnt,init) \
594	if (expect_false ((cnt) > (cur))) \	675	if (expect_false ((cnt) > (cur))) \
595	{ \	676	{ \
596	int ocur_ = (cur); \	677	int ocur_ = (cur); \
…		…
608	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	689	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
609	}	690	}
610	#endif	691	#endif
611		692
612	#define array_free(stem, idx) \	693	#define array_free(stem, idx) \
613	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	694	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
614		695
615	/*****************************************************************************/	696	/*****************************************************************************/
		697
		698	/* dummy callback for pending events */
		699	static void noinline
		700	pendingcb (EV_P_ ev_prepare *w, int revents)
		701	{
		702	}
616		703
617	void noinline	704	void noinline
618	ev_feed_event (EV_P_ void *w, int revents)	705	ev_feed_event (EV_P_ void *w, int revents)
619	{	706	{
620	W w_ = (W)w;	707	W w_ = (W)w;
…		…
629	pendings [pri][w_->pending - 1].w = w_;	716	pendings [pri][w_->pending - 1].w = w_;
630	pendings [pri][w_->pending - 1].events = revents;	717	pendings [pri][w_->pending - 1].events = revents;
631	}	718	}
632	}	719	}
633		720
634	void inline_speed	721	inline_speed void
		722	feed_reverse (EV_P_ W w)
		723	{
		724	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		725	rfeeds [rfeedcnt++] = w;
		726	}
		727
		728	inline_size void
		729	feed_reverse_done (EV_P_ int revents)
		730	{
		731	do
		732	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		733	while (rfeedcnt);
		734	}
		735
		736	inline_speed void
635	queue_events (EV_P_ W *events, int eventcnt, int type)	737	queue_events (EV_P_ W *events, int eventcnt, int type)
636	{	738	{
637	int i;	739	int i;
638		740
639	for (i = 0; i < eventcnt; ++i)	741	for (i = 0; i < eventcnt; ++i)
640	ev_feed_event (EV_A_ events [i], type);	742	ev_feed_event (EV_A_ events [i], type);
641	}	743	}
642		744
643	/*****************************************************************************/	745	/*****************************************************************************/
644		746
645	void inline_size	747	inline_speed void
646	anfds_init (ANFD *base, int count)
647	{
648	while (count--)
649	{
650	base->head = 0;
651	base->events = EV_NONE;
652	base->reify = 0;
653
654	++base;
655	}
656	}
657
658	void inline_speed
659	fd_event (EV_P_ int fd, int revents)	748	fd_event (EV_P_ int fd, int revents)
660	{	749	{
661	ANFD *anfd = anfds + fd;	750	ANFD *anfd = anfds + fd;
662	ev_io *w;	751	ev_io *w;
663		752
…		…
675	{	764	{
676	if (fd >= 0 && fd < anfdmax)	765	if (fd >= 0 && fd < anfdmax)
677	fd_event (EV_A_ fd, revents);	766	fd_event (EV_A_ fd, revents);
678	}	767	}
679		768
680	void inline_size	769	/* make sure the external fd watch events are in-sync */
		770	/* with the kernel/libev internal state */
		771	inline_size void
681	fd_reify (EV_P)	772	fd_reify (EV_P)
682	{	773	{
683	int i;	774	int i;
684		775
685	for (i = 0; i < fdchangecnt; ++i)	776	for (i = 0; i < fdchangecnt; ++i)
…		…
694	events |= (unsigned char)w->events;	785	events |= (unsigned char)w->events;
695		786
696	#if EV_SELECT_IS_WINSOCKET	787	#if EV_SELECT_IS_WINSOCKET
697	if (events)	788	if (events)
698	{	789	{
699	unsigned long argp;	790	unsigned long arg;
700	#ifdef EV_FD_TO_WIN32_HANDLE	791	#ifdef EV_FD_TO_WIN32_HANDLE
701	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	792	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
702	#else	793	#else
703	anfd->handle = _get_osfhandle (fd);	794	anfd->handle = _get_osfhandle (fd);
704	#endif	795	#endif
705	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	796	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
706	}	797	}
707	#endif	798	#endif
708		799
709	{	800	{
710	unsigned char o_events = anfd->events;	801	unsigned char o_events = anfd->events;
711	unsigned char o_reify = anfd->reify;	802	unsigned char o_reify = anfd->reify;
712		803
713	anfd->reify = 0;	804	anfd->reify = 0;
714	anfd->events = events;	805	anfd->events = events;
715		806
716	if (o_events != events || o_reify & EV_IOFDSET)	807	if (o_events != events || o_reify & EV__IOFDSET)
717	backend_modify (EV_A_ fd, o_events, events);	808	backend_modify (EV_A_ fd, o_events, events);
718	}	809	}
719	}	810	}
720		811
721	fdchangecnt = 0;	812	fdchangecnt = 0;
722	}	813	}
723		814
724	void inline_size	815	/* something about the given fd changed */
		816	inline_size void
725	fd_change (EV_P_ int fd, int flags)	817	fd_change (EV_P_ int fd, int flags)
726	{	818	{
727	unsigned char reify = anfds [fd].reify;	819	unsigned char reify = anfds [fd].reify;
728	anfds [fd].reify |= flags;	820	anfds [fd].reify |= flags;
729		821
…		…
733	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	825	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
734	fdchanges [fdchangecnt - 1] = fd;	826	fdchanges [fdchangecnt - 1] = fd;
735	}	827	}
736	}	828	}
737		829
738	void inline_speed	830	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		831	inline_speed void
739	fd_kill (EV_P_ int fd)	832	fd_kill (EV_P_ int fd)
740	{	833	{
741	ev_io *w;	834	ev_io *w;
742		835
743	while ((w = (ev_io *)anfds [fd].head))	836	while ((w = (ev_io *)anfds [fd].head))
…		…
745	ev_io_stop (EV_A_ w);	838	ev_io_stop (EV_A_ w);
746	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	839	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
747	}	840	}
748	}	841	}
749		842
750	int inline_size	843	/* check whether the given fd is atcually valid, for error recovery */
		844	inline_size int
751	fd_valid (int fd)	845	fd_valid (int fd)
752	{	846	{
753	#ifdef _WIN32	847	#ifdef _WIN32
754	return _get_osfhandle (fd) != -1;	848	return _get_osfhandle (fd) != -1;
755	#else	849	#else
…		…
763	{	857	{
764	int fd;	858	int fd;
765		859
766	for (fd = 0; fd < anfdmax; ++fd)	860	for (fd = 0; fd < anfdmax; ++fd)
767	if (anfds [fd].events)	861	if (anfds [fd].events)
768	if (!fd_valid (fd) == -1 && errno == EBADF)	862	if (!fd_valid (fd) && errno == EBADF)
769	fd_kill (EV_A_ fd);	863	fd_kill (EV_A_ fd);
770	}	864	}
771		865
772	/* called on ENOMEM in select/poll to kill some fds and retry */	866	/* called on ENOMEM in select/poll to kill some fds and retry */
773	static void noinline	867	static void noinline
…		…
791		885
792	for (fd = 0; fd < anfdmax; ++fd)	886	for (fd = 0; fd < anfdmax; ++fd)
793	if (anfds [fd].events)	887	if (anfds [fd].events)
794	{	888	{
795	anfds [fd].events = 0;	889	anfds [fd].events = 0;
		890	anfds [fd].emask = 0;
796	fd_change (EV_A_ fd, EV_IOFDSET | 1);	891	fd_change (EV_A_ fd, EV__IOFDSET | 1);
797	}	892	}
798	}	893	}
799		894
800	/*****************************************************************************/	895	/*****************************************************************************/
801		896
…		…
817	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	912	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
818	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)	913	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
819	#define UPHEAP_DONE(p,k) ((p) == (k))	914	#define UPHEAP_DONE(p,k) ((p) == (k))
820		915
821	/* away from the root */	916	/* away from the root */
822	void inline_speed	917	inline_speed void
823	downheap (ANHE *heap, int N, int k)	918	downheap (ANHE *heap, int N, int k)
824	{	919	{
825	ANHE he = heap [k];	920	ANHE he = heap [k];
826	ANHE *E = heap + N + HEAP0;	921	ANHE *E = heap + N + HEAP0;
827		922
…		…
867	#define HEAP0 1	962	#define HEAP0 1
868	#define HPARENT(k) ((k) >> 1)	963	#define HPARENT(k) ((k) >> 1)
869	#define UPHEAP_DONE(p,k) (!(p))	964	#define UPHEAP_DONE(p,k) (!(p))
870		965
871	/* away from the root */	966	/* away from the root */
872	void inline_speed	967	inline_speed void
873	downheap (ANHE *heap, int N, int k)	968	downheap (ANHE *heap, int N, int k)
874	{	969	{
875	ANHE he = heap [k];	970	ANHE he = heap [k];
876		971
877	for (;;)	972	for (;;)
…		…
897	ev_active (ANHE_w (he)) = k;	992	ev_active (ANHE_w (he)) = k;
898	}	993	}
899	#endif	994	#endif
900		995
901	/* towards the root */	996	/* towards the root */
902	void inline_speed	997	inline_speed void
903	upheap (ANHE *heap, int k)	998	upheap (ANHE *heap, int k)
904	{	999	{
905	ANHE he = heap [k];	1000	ANHE he = heap [k];
906		1001
907	for (;;)	1002	for (;;)
…		…
918		1013
919	heap [k] = he;	1014	heap [k] = he;
920	ev_active (ANHE_w (he)) = k;	1015	ev_active (ANHE_w (he)) = k;
921	}	1016	}
922		1017
923	void inline_size	1018	/* move an element suitably so it is in a correct place */
		1019	inline_size void
924	adjustheap (ANHE *heap, int N, int k)	1020	adjustheap (ANHE *heap, int N, int k)
925	{	1021	{
926	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1022	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
927	upheap (heap, k);	1023	upheap (heap, k);
928	else	1024	else
929	downheap (heap, N, k);	1025	downheap (heap, N, k);
930	}	1026	}
931		1027
932	/* rebuild the heap: this function is used only once and executed rarely */	1028	/* rebuild the heap: this function is used only once and executed rarely */
933	void inline_size	1029	inline_size void
934	reheap (ANHE *heap, int N)	1030	reheap (ANHE *heap, int N)
935	{	1031	{
936	int i;	1032	int i;
		1033
937	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */	1034	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
938	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */	1035	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
939	for (i = 0; i < N; ++i)	1036	for (i = 0; i < N; ++i)
940	upheap (heap, i + HEAP0);	1037	upheap (heap, i + HEAP0);
941	}	1038	}
942		1039
943	#if EV_VERIFY
944	static void
945	checkheap (ANHE *heap, int N)
946	{
947	int i;
948
949	for (i = HEAP0; i < N + HEAP0; ++i)
950	{
951	assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
952	assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
953	assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
954	}
955	}
956	#endif
957
958	/*****************************************************************************/	1040	/*****************************************************************************/
959		1041
		1042	/* associate signal watchers to a signal signal */
960	typedef struct	1043	typedef struct
961	{	1044	{
962	WL head;	1045	WL head;
963	EV_ATOMIC_T gotsig;	1046	EV_ATOMIC_T gotsig;
964	} ANSIG;	1047	} ANSIG;
…		…
966	static ANSIG *signals;	1049	static ANSIG *signals;
967	static int signalmax;	1050	static int signalmax;
968		1051
969	static EV_ATOMIC_T gotsig;	1052	static EV_ATOMIC_T gotsig;
970		1053
971	void inline_size
972	signals_init (ANSIG *base, int count)
973	{
974	while (count--)
975	{
976	base->head = 0;
977	base->gotsig = 0;
978
979	++base;
980	}
981	}
982
983	/*****************************************************************************/	1054	/*****************************************************************************/
984		1055
985	void inline_speed	1056	/* used to prepare libev internal fd's */
		1057	/* this is not fork-safe */
		1058	inline_speed void
986	fd_intern (int fd)	1059	fd_intern (int fd)
987	{	1060	{
988	#ifdef _WIN32	1061	#ifdef _WIN32
989	int arg = 1;	1062	unsigned long arg = 1;
990	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1063	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
991	#else	1064	#else
992	fcntl (fd, F_SETFD, FD_CLOEXEC);	1065	fcntl (fd, F_SETFD, FD_CLOEXEC);
993	fcntl (fd, F_SETFL, O_NONBLOCK);	1066	fcntl (fd, F_SETFL, O_NONBLOCK);
994	#endif	1067	#endif
995	}	1068	}
996		1069
997	static void noinline	1070	static void noinline
998	evpipe_init (EV_P)	1071	evpipe_init (EV_P)
999	{	1072	{
1000	if (!ev_is_active (&pipeev))	1073	if (!ev_is_active (&pipe_w))
1001	{	1074	{
1002	#if EV_USE_EVENTFD	1075	#if EV_USE_EVENTFD
1003	if ((evfd = eventfd (0, 0)) >= 0)	1076	if ((evfd = eventfd (0, 0)) >= 0)
1004	{	1077	{
1005	evpipe [0] = -1;	1078	evpipe [0] = -1;
1006	fd_intern (evfd);	1079	fd_intern (evfd);
1007	ev_io_set (&pipeev, evfd, EV_READ);	1080	ev_io_set (&pipe_w, evfd, EV_READ);
1008	}	1081	}
1009	else	1082	else
1010	#endif	1083	#endif
1011	{	1084	{
1012	while (pipe (evpipe))	1085	while (pipe (evpipe))
1013	syserr ("(libev) error creating signal/async pipe");	1086	ev_syserr ("(libev) error creating signal/async pipe");
1014		1087
1015	fd_intern (evpipe [0]);	1088	fd_intern (evpipe [0]);
1016	fd_intern (evpipe [1]);	1089	fd_intern (evpipe [1]);
1017	ev_io_set (&pipeev, evpipe [0], EV_READ);	1090	ev_io_set (&pipe_w, evpipe [0], EV_READ);
1018	}	1091	}
1019		1092
1020	ev_io_start (EV_A_ &pipeev);	1093	ev_io_start (EV_A_ &pipe_w);
1021	ev_unref (EV_A); /* watcher should not keep loop alive */	1094	ev_unref (EV_A); /* watcher should not keep loop alive */
1022	}	1095	}
1023	}	1096	}
1024		1097
1025	void inline_size	1098	inline_size void
1026	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1099	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1027	{	1100	{
1028	if (!*flag)	1101	if (!*flag)
1029	{	1102	{
1030	int old_errno = errno; /* save errno because write might clobber it */	1103	int old_errno = errno; /* save errno because write might clobber it */
…		…
1043		1116
1044	errno = old_errno;	1117	errno = old_errno;
1045	}	1118	}
1046	}	1119	}
1047		1120
		1121	/* called whenever the libev signal pipe */
		1122	/* got some events (signal, async) */
1048	static void	1123	static void
1049	pipecb (EV_P_ ev_io *iow, int revents)	1124	pipecb (EV_P_ ev_io *iow, int revents)
1050	{	1125	{
1051	#if EV_USE_EVENTFD	1126	#if EV_USE_EVENTFD
1052	if (evfd >= 0)	1127	if (evfd >= 0)
…		…
1108	ev_feed_signal_event (EV_P_ int signum)	1183	ev_feed_signal_event (EV_P_ int signum)
1109	{	1184	{
1110	WL w;	1185	WL w;
1111		1186
1112	#if EV_MULTIPLICITY	1187	#if EV_MULTIPLICITY
1113	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1188	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1114	#endif	1189	#endif
1115		1190
1116	--signum;	1191	--signum;
1117		1192
1118	if (signum < 0 || signum >= signalmax)	1193	if (signum < 0 || signum >= signalmax)
…		…
1134		1209
1135	#ifndef WIFCONTINUED	1210	#ifndef WIFCONTINUED
1136	# define WIFCONTINUED(status) 0	1211	# define WIFCONTINUED(status) 0
1137	#endif	1212	#endif
1138		1213
1139	void inline_speed	1214	/* handle a single child status event */
		1215	inline_speed void
1140	child_reap (EV_P_ int chain, int pid, int status)	1216	child_reap (EV_P_ int chain, int pid, int status)
1141	{	1217	{
1142	ev_child *w;	1218	ev_child *w;
1143	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1219	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1144		1220
…		…
1157		1233
1158	#ifndef WCONTINUED	1234	#ifndef WCONTINUED
1159	# define WCONTINUED 0	1235	# define WCONTINUED 0
1160	#endif	1236	#endif
1161		1237
		1238	/* called on sigchld etc., calls waitpid */
1162	static void	1239	static void
1163	childcb (EV_P_ ev_signal *sw, int revents)	1240	childcb (EV_P_ ev_signal *sw, int revents)
1164	{	1241	{
1165	int pid, status;	1242	int pid, status;
1166		1243
…		…
1247	/* kqueue is borked on everything but netbsd apparently */	1324	/* kqueue is borked on everything but netbsd apparently */
1248	/* it usually doesn't work correctly on anything but sockets and pipes */	1325	/* it usually doesn't work correctly on anything but sockets and pipes */
1249	flags &= ~EVBACKEND_KQUEUE;	1326	flags &= ~EVBACKEND_KQUEUE;
1250	#endif	1327	#endif
1251	#ifdef __APPLE__	1328	#ifdef __APPLE__
1252	// flags &= ~EVBACKEND_KQUEUE; for documentation	1329	/* only select works correctly on that "unix-certified" platform */
1253	flags &= ~EVBACKEND_POLL;	1330	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1331	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1254	#endif	1332	#endif
1255		1333
1256	return flags;	1334	return flags;
1257	}	1335	}
1258		1336
…		…
1290	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1368	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1291	{	1369	{
1292	timeout_blocktime = interval;	1370	timeout_blocktime = interval;
1293	}	1371	}
1294		1372
		1373	/* initialise a loop structure, must be zero-initialised */
1295	static void noinline	1374	static void noinline
1296	loop_init (EV_P_ unsigned int flags)	1375	loop_init (EV_P_ unsigned int flags)
1297	{	1376	{
1298	if (!backend)	1377	if (!backend)
1299	{	1378	{
		1379	#if EV_USE_REALTIME
		1380	if (!have_realtime)
		1381	{
		1382	struct timespec ts;
		1383
		1384	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1385	have_realtime = 1;
		1386	}
		1387	#endif
		1388
1300	#if EV_USE_MONOTONIC	1389	#if EV_USE_MONOTONIC
		1390	if (!have_monotonic)
1301	{	1391	{
1302	struct timespec ts;	1392	struct timespec ts;
		1393
1303	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1394	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1304	have_monotonic = 1;	1395	have_monotonic = 1;
1305	}	1396	}
1306	#endif	1397	#endif
1307		1398
1308	ev_rt_now = ev_time ();	1399	ev_rt_now = ev_time ();
1309	mn_now = get_clock ();	1400	mn_now = get_clock ();
1310	now_floor = mn_now;	1401	now_floor = mn_now;
…		…
1347	#endif	1438	#endif
1348	#if EV_USE_SELECT	1439	#if EV_USE_SELECT
1349	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1440	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1350	#endif	1441	#endif
1351		1442
		1443	ev_prepare_init (&pending_w, pendingcb);
		1444
1352	ev_init (&pipeev, pipecb);	1445	ev_init (&pipe_w, pipecb);
1353	ev_set_priority (&pipeev, EV_MAXPRI);	1446	ev_set_priority (&pipe_w, EV_MAXPRI);
1354	}	1447	}
1355	}	1448	}
1356		1449
		1450	/* free up a loop structure */
1357	static void noinline	1451	static void noinline
1358	loop_destroy (EV_P)	1452	loop_destroy (EV_P)
1359	{	1453	{
1360	int i;	1454	int i;
1361		1455
1362	if (ev_is_active (&pipeev))	1456	if (ev_is_active (&pipe_w))
1363	{	1457	{
1364	ev_ref (EV_A); /* signal watcher */	1458	ev_ref (EV_A); /* signal watcher */
1365	ev_io_stop (EV_A_ &pipeev);	1459	ev_io_stop (EV_A_ &pipe_w);
1366		1460
1367	#if EV_USE_EVENTFD	1461	#if EV_USE_EVENTFD
1368	if (evfd >= 0)	1462	if (evfd >= 0)
1369	close (evfd);	1463	close (evfd);
1370	#endif	1464	#endif
…		…
1409	}	1503	}
1410		1504
1411	ev_free (anfds); anfdmax = 0;	1505	ev_free (anfds); anfdmax = 0;
1412		1506
1413	/* have to use the microsoft-never-gets-it-right macro */	1507	/* have to use the microsoft-never-gets-it-right macro */
		1508	array_free (rfeed, EMPTY);
1414	array_free (fdchange, EMPTY);	1509	array_free (fdchange, EMPTY);
1415	array_free (timer, EMPTY);	1510	array_free (timer, EMPTY);
1416	#if EV_PERIODIC_ENABLE	1511	#if EV_PERIODIC_ENABLE
1417	array_free (periodic, EMPTY);	1512	array_free (periodic, EMPTY);
1418	#endif	1513	#endif
…		…
1427		1522
1428	backend = 0;	1523	backend = 0;
1429	}	1524	}
1430		1525
1431	#if EV_USE_INOTIFY	1526	#if EV_USE_INOTIFY
1432	void inline_size infy_fork (EV_P);	1527	inline_size void infy_fork (EV_P);
1433	#endif	1528	#endif
1434		1529
1435	void inline_size	1530	inline_size void
1436	loop_fork (EV_P)	1531	loop_fork (EV_P)
1437	{	1532	{
1438	#if EV_USE_PORT	1533	#if EV_USE_PORT
1439	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1534	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1440	#endif	1535	#endif
…		…
1446	#endif	1541	#endif
1447	#if EV_USE_INOTIFY	1542	#if EV_USE_INOTIFY
1448	infy_fork (EV_A);	1543	infy_fork (EV_A);
1449	#endif	1544	#endif
1450		1545
1451	if (ev_is_active (&pipeev))	1546	if (ev_is_active (&pipe_w))
1452	{	1547	{
1453	/* this "locks" the handlers against writing to the pipe */	1548	/* this "locks" the handlers against writing to the pipe */
1454	/* while we modify the fd vars */	1549	/* while we modify the fd vars */
1455	gotsig = 1;	1550	gotsig = 1;
1456	#if EV_ASYNC_ENABLE	1551	#if EV_ASYNC_ENABLE
1457	gotasync = 1;	1552	gotasync = 1;
1458	#endif	1553	#endif
1459		1554
1460	ev_ref (EV_A);	1555	ev_ref (EV_A);
1461	ev_io_stop (EV_A_ &pipeev);	1556	ev_io_stop (EV_A_ &pipe_w);
1462		1557
1463	#if EV_USE_EVENTFD	1558	#if EV_USE_EVENTFD
1464	if (evfd >= 0)	1559	if (evfd >= 0)
1465	close (evfd);	1560	close (evfd);
1466	#endif	1561	#endif
…		…
1471	close (evpipe [1]);	1566	close (evpipe [1]);
1472	}	1567	}
1473		1568
1474	evpipe_init (EV_A);	1569	evpipe_init (EV_A);
1475	/* now iterate over everything, in case we missed something */	1570	/* now iterate over everything, in case we missed something */
1476	pipecb (EV_A_ &pipeev, EV_READ);	1571	pipecb (EV_A_ &pipe_w, EV_READ);
1477	}	1572	}
1478		1573
1479	postfork = 0;	1574	postfork = 0;
1480	}	1575	}
1481		1576
1482	#if EV_MULTIPLICITY	1577	#if EV_MULTIPLICITY
		1578
1483	struct ev_loop *	1579	struct ev_loop *
1484	ev_loop_new (unsigned int flags)	1580	ev_loop_new (unsigned int flags)
1485	{	1581	{
1486	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1582	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1487		1583
…		…
1507	{	1603	{
1508	postfork = 1; /* must be in line with ev_default_fork */	1604	postfork = 1; /* must be in line with ev_default_fork */
1509	}	1605	}
1510		1606
1511	#if EV_VERIFY	1607	#if EV_VERIFY
1512	static void	1608	static void noinline
		1609	verify_watcher (EV_P_ W w)
		1610	{
		1611	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1612
		1613	if (w->pending)
		1614	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1615	}
		1616
		1617	static void noinline
		1618	verify_heap (EV_P_ ANHE *heap, int N)
		1619	{
		1620	int i;
		1621
		1622	for (i = HEAP0; i < N + HEAP0; ++i)
		1623	{
		1624	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1625	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1626	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1627
		1628	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1629	}
		1630	}
		1631
		1632	static void noinline
1513	array_check (W **ws, int cnt)	1633	array_verify (EV_P_ W *ws, int cnt)
1514	{	1634	{
1515	while (cnt--)	1635	while (cnt--)
		1636	{
1516	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));	1637	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1638	verify_watcher (EV_A_ ws [cnt]);
		1639	}
1517	}	1640	}
		1641	#endif
1518		1642
1519	static void	1643	void
1520	ev_loop_verify (EV_P)	1644	ev_loop_verify (EV_P)
1521	{	1645	{
		1646	#if EV_VERIFY
1522	int i;	1647	int i;
		1648	WL w;
1523		1649
		1650	assert (activecnt >= -1);
		1651
		1652	assert (fdchangemax >= fdchangecnt);
		1653	for (i = 0; i < fdchangecnt; ++i)
		1654	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1655
		1656	assert (anfdmax >= 0);
		1657	for (i = 0; i < anfdmax; ++i)
		1658	for (w = anfds [i].head; w; w = w->next)
		1659	{
		1660	verify_watcher (EV_A_ (W)w);
		1661	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1662	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1663	}
		1664
		1665	assert (timermax >= timercnt);
1524	checkheap (timers, timercnt);	1666	verify_heap (EV_A_ timers, timercnt);
		1667
1525	#if EV_PERIODIC_ENABLE	1668	#if EV_PERIODIC_ENABLE
		1669	assert (periodicmax >= periodiccnt);
1526	checkheap (periodics, periodiccnt);	1670	verify_heap (EV_A_ periodics, periodiccnt);
1527	#endif	1671	#endif
1528		1672
		1673	for (i = NUMPRI; i--; )
		1674	{
		1675	assert (pendingmax [i] >= pendingcnt [i]);
1529	#if EV_IDLE_ENABLE	1676	#if EV_IDLE_ENABLE
1530	for (i = NUMPRI; i--; )	1677	assert (idleall >= 0);
		1678	assert (idlemax [i] >= idlecnt [i]);
1531	array_check ((W **)idles [i], idlecnt [i]);	1679	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1532	#endif	1680	#endif
		1681	}
		1682
1533	#if EV_FORK_ENABLE	1683	#if EV_FORK_ENABLE
		1684	assert (forkmax >= forkcnt);
1534	array_check ((W **)forks, forkcnt);	1685	array_verify (EV_A_ (W *)forks, forkcnt);
1535	#endif	1686	#endif
1536	array_check ((W **)prepares, preparecnt);	1687
1537	array_check ((W **)checks, checkcnt);
1538	#if EV_ASYNC_ENABLE	1688	#if EV_ASYNC_ENABLE
		1689	assert (asyncmax >= asynccnt);
1539	array_check ((W **)asyncs, asynccnt);	1690	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1691	#endif
		1692
		1693	assert (preparemax >= preparecnt);
		1694	array_verify (EV_A_ (W *)prepares, preparecnt);
		1695
		1696	assert (checkmax >= checkcnt);
		1697	array_verify (EV_A_ (W *)checks, checkcnt);
		1698
		1699	# if 0
		1700	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1701	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1540	#endif	1702	# endif
1541	}
1542	#endif	1703	#endif
		1704	}
1543		1705
1544	#endif	1706	#endif /* multiplicity */
1545		1707
1546	#if EV_MULTIPLICITY	1708	#if EV_MULTIPLICITY
1547	struct ev_loop *	1709	struct ev_loop *
1548	ev_default_loop_init (unsigned int flags)	1710	ev_default_loop_init (unsigned int flags)
1549	#else	1711	#else
…		…
1582	{	1744	{
1583	#if EV_MULTIPLICITY	1745	#if EV_MULTIPLICITY
1584	struct ev_loop *loop = ev_default_loop_ptr;	1746	struct ev_loop *loop = ev_default_loop_ptr;
1585	#endif	1747	#endif
1586		1748
		1749	ev_default_loop_ptr = 0;
		1750
1587	#ifndef _WIN32	1751	#ifndef _WIN32
1588	ev_ref (EV_A); /* child watcher */	1752	ev_ref (EV_A); /* child watcher */
1589	ev_signal_stop (EV_A_ &childev);	1753	ev_signal_stop (EV_A_ &childev);
1590	#endif	1754	#endif
1591		1755
…		…
1597	{	1761	{
1598	#if EV_MULTIPLICITY	1762	#if EV_MULTIPLICITY
1599	struct ev_loop *loop = ev_default_loop_ptr;	1763	struct ev_loop *loop = ev_default_loop_ptr;
1600	#endif	1764	#endif
1601		1765
1602	if (backend)
1603	postfork = 1; /* must be in line with ev_loop_fork */	1766	postfork = 1; /* must be in line with ev_loop_fork */
1604	}	1767	}
1605		1768
1606	/*****************************************************************************/	1769	/*****************************************************************************/
1607		1770
1608	void	1771	void
1609	ev_invoke (EV_P_ void *w, int revents)	1772	ev_invoke (EV_P_ void *w, int revents)
1610	{	1773	{
1611	EV_CB_INVOKE ((W)w, revents);	1774	EV_CB_INVOKE ((W)w, revents);
1612	}	1775	}
1613		1776
1614	void inline_speed	1777	inline_speed void
1615	call_pending (EV_P)	1778	call_pending (EV_P)
1616	{	1779	{
1617	int pri;	1780	int pri;
1618
1619	EV_FREQUENT_CHECK;
1620		1781
1621	for (pri = NUMPRI; pri--; )	1782	for (pri = NUMPRI; pri--; )
1622	while (pendingcnt [pri])	1783	while (pendingcnt [pri])
1623	{	1784	{
1624	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1785	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1625		1786
1626	if (expect_true (p->w))
1627	{
1628	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1787	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1788	/* ^ this is no longer true, as pending_w could be here */
1629		1789
1630	p->w->pending = 0;	1790	p->w->pending = 0;
1631	EV_CB_INVOKE (p->w, p->events);	1791	EV_CB_INVOKE (p->w, p->events);
1632	}	1792	EV_FREQUENT_CHECK;
1633	}	1793	}
1634
1635	EV_FREQUENT_CHECK;
1636	}	1794	}
1637		1795
1638	#if EV_IDLE_ENABLE	1796	#if EV_IDLE_ENABLE
1639	void inline_size	1797	/* make idle watchers pending. this handles the "call-idle */
		1798	/* only when higher priorities are idle" logic */
		1799	inline_size void
1640	idle_reify (EV_P)	1800	idle_reify (EV_P)
1641	{	1801	{
1642	if (expect_false (idleall))	1802	if (expect_false (idleall))
1643	{	1803	{
1644	int pri;	1804	int pri;
…		…
1656	}	1816	}
1657	}	1817	}
1658	}	1818	}
1659	#endif	1819	#endif
1660		1820
1661	void inline_size	1821	/* make timers pending */
		1822	inline_size void
1662	timers_reify (EV_P)	1823	timers_reify (EV_P)
1663	{	1824	{
1664	EV_FREQUENT_CHECK;	1825	EV_FREQUENT_CHECK;
1665		1826
1666	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	1827	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1667	{	1828	{
1668	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	1829	do
1669
1670	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1671
1672	/* first reschedule or stop timer */
1673	if (w->repeat)
1674	{	1830	{
		1831	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1832
		1833	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		1834
		1835	/* first reschedule or stop timer */
		1836	if (w->repeat)
		1837	{
1675	ev_at (w) += w->repeat;	1838	ev_at (w) += w->repeat;
1676	if (ev_at (w) < mn_now)	1839	if (ev_at (w) < mn_now)
1677	ev_at (w) = mn_now;	1840	ev_at (w) = mn_now;
1678		1841
1679	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1842	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1680		1843
1681	ANHE_at_cache (timers [HEAP0]);	1844	ANHE_at_cache (timers [HEAP0]);
1682	downheap (timers, timercnt, HEAP0);	1845	downheap (timers, timercnt, HEAP0);
		1846	}
		1847	else
		1848	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1849
		1850	EV_FREQUENT_CHECK;
		1851	feed_reverse (EV_A_ (W)w);
1683	}	1852	}
1684	else	1853	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1685	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1686		1854
1687	EV_FREQUENT_CHECK;
1688	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1855	feed_reverse_done (EV_A_ EV_TIMEOUT);
1689	}	1856	}
1690	}	1857	}
1691		1858
1692	#if EV_PERIODIC_ENABLE	1859	#if EV_PERIODIC_ENABLE
1693	void inline_size	1860	/* make periodics pending */
		1861	inline_size void
1694	periodics_reify (EV_P)	1862	periodics_reify (EV_P)
1695	{	1863	{
1696	EV_FREQUENT_CHECK;	1864	EV_FREQUENT_CHECK;
		1865
1697	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	1866	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1698	{	1867	{
1699	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	1868	int feed_count = 0;
1700		1869
1701	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	1870	do
1702
1703	/* first reschedule or stop timer */
1704	if (w->reschedule_cb)
1705	{	1871	{
		1872	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1873
		1874	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		1875
		1876	/* first reschedule or stop timer */
		1877	if (w->reschedule_cb)
		1878	{
1706	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1879	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1707		1880
1708	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));	1881	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1709		1882
1710	ANHE_at_cache (periodics [HEAP0]);	1883	ANHE_at_cache (periodics [HEAP0]);
1711	downheap (periodics, periodiccnt, HEAP0);	1884	downheap (periodics, periodiccnt, HEAP0);
		1885	}
		1886	else if (w->interval)
		1887	{
		1888	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1889	/* if next trigger time is not sufficiently in the future, put it there */
		1890	/* this might happen because of floating point inexactness */
		1891	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1892	{
		1893	ev_at (w) += w->interval;
		1894
		1895	/* if interval is unreasonably low we might still have a time in the past */
		1896	/* so correct this. this will make the periodic very inexact, but the user */
		1897	/* has effectively asked to get triggered more often than possible */
		1898	if (ev_at (w) < ev_rt_now)
		1899	ev_at (w) = ev_rt_now;
		1900	}
		1901
		1902	ANHE_at_cache (periodics [HEAP0]);
		1903	downheap (periodics, periodiccnt, HEAP0);
		1904	}
		1905	else
		1906	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1907
1712	EV_FREQUENT_CHECK;	1908	EV_FREQUENT_CHECK;
		1909	feed_reverse (EV_A_ (W)w);
1713	}	1910	}
1714	else if (w->interval)	1911	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1715	{
1716	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1717	/* if next trigger time is not sufficiently in the future, put it there */
1718	/* this might happen because of floating point inexactness */
1719	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1720	{
1721	ev_at (w) += w->interval;
1722		1912
1723	/* if interval is unreasonably low we might still have a time in the past */
1724	/* so correct this. this will make the periodic very inexact, but the user */
1725	/* has effectively asked to get triggered more often than possible */
1726	if (ev_at (w) < ev_rt_now)
1727	ev_at (w) = ev_rt_now;
1728	}
1729
1730	ANHE_at_cache (periodics [HEAP0]);
1731	downheap (periodics, periodiccnt, HEAP0);
1732	}
1733	else
1734	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1735
1736	EV_FREQUENT_CHECK;
1737	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1913	feed_reverse_done (EV_A_ EV_PERIODIC);
1738	}	1914	}
1739	}	1915	}
1740		1916
		1917	/* simply recalculate all periodics */
		1918	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1741	static void noinline	1919	static void noinline
1742	periodics_reschedule (EV_P)	1920	periodics_reschedule (EV_P)
1743	{	1921	{
1744	int i;	1922	int i;
1745		1923
…		…
1758		1936
1759	reheap (periodics, periodiccnt);	1937	reheap (periodics, periodiccnt);
1760	}	1938	}
1761	#endif	1939	#endif
1762		1940
1763	void inline_speed	1941	/* adjust all timers by a given offset */
		1942	static void noinline
		1943	timers_reschedule (EV_P_ ev_tstamp adjust)
		1944	{
		1945	int i;
		1946
		1947	for (i = 0; i < timercnt; ++i)
		1948	{
		1949	ANHE *he = timers + i + HEAP0;
		1950	ANHE_w (*he)->at += adjust;
		1951	ANHE_at_cache (*he);
		1952	}
		1953	}
		1954
		1955	/* fetch new monotonic and realtime times from the kernel */
		1956	/* also detetc if there was a timejump, and act accordingly */
		1957	inline_speed void
1764	time_update (EV_P_ ev_tstamp max_block)	1958	time_update (EV_P_ ev_tstamp max_block)
1765	{	1959	{
1766	int i;
1767
1768	#if EV_USE_MONOTONIC	1960	#if EV_USE_MONOTONIC
1769	if (expect_true (have_monotonic))	1961	if (expect_true (have_monotonic))
1770	{	1962	{
		1963	int i;
1771	ev_tstamp odiff = rtmn_diff;	1964	ev_tstamp odiff = rtmn_diff;
1772		1965
1773	mn_now = get_clock ();	1966	mn_now = get_clock ();
1774		1967
1775	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	1968	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1801	ev_rt_now = ev_time ();	1994	ev_rt_now = ev_time ();
1802	mn_now = get_clock ();	1995	mn_now = get_clock ();
1803	now_floor = mn_now;	1996	now_floor = mn_now;
1804	}	1997	}
1805		1998
		1999	/* no timer adjustment, as the monotonic clock doesn't jump */
		2000	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1806	# if EV_PERIODIC_ENABLE	2001	# if EV_PERIODIC_ENABLE
1807	periodics_reschedule (EV_A);	2002	periodics_reschedule (EV_A);
1808	# endif	2003	# endif
1809	/* no timer adjustment, as the monotonic clock doesn't jump */
1810	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1811	}	2004	}
1812	else	2005	else
1813	#endif	2006	#endif
1814	{	2007	{
1815	ev_rt_now = ev_time ();	2008	ev_rt_now = ev_time ();
1816		2009
1817	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2010	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1818	{	2011	{
		2012	/* adjust timers. this is easy, as the offset is the same for all of them */
		2013	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1819	#if EV_PERIODIC_ENABLE	2014	#if EV_PERIODIC_ENABLE
1820	periodics_reschedule (EV_A);	2015	periodics_reschedule (EV_A);
1821	#endif	2016	#endif
1822	/* adjust timers. this is easy, as the offset is the same for all of them */
1823	for (i = 0; i < timercnt; ++i)
1824	{
1825	ANHE *he = timers + i + HEAP0;
1826	ANHE_w (*he)->at += ev_rt_now - mn_now;
1827	ANHE_at_cache (*he);
1828	}
1829	}	2017	}
1830		2018
1831	mn_now = ev_rt_now;	2019	mn_now = ev_rt_now;
1832	}	2020	}
1833	}	2021	}
1834		2022
1835	void
1836	ev_ref (EV_P)
1837	{
1838	++activecnt;
1839	}
1840
1841	void
1842	ev_unref (EV_P)
1843	{
1844	--activecnt;
1845	}
1846
1847	static int loop_done;	2023	static int loop_done;
1848		2024
1849	void	2025	void
1850	ev_loop (EV_P_ int flags)	2026	ev_loop (EV_P_ int flags)
1851	{	2027	{
…		…
1853		2029
1854	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2030	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1855		2031
1856	do	2032	do
1857	{	2033	{
		2034	#if EV_VERIFY >= 2
		2035	ev_loop_verify (EV_A);
		2036	#endif
		2037
1858	#ifndef _WIN32	2038	#ifndef _WIN32
1859	if (expect_false (curpid)) /* penalise the forking check even more */	2039	if (expect_false (curpid)) /* penalise the forking check even more */
1860	if (expect_false (getpid () != curpid))	2040	if (expect_false (getpid () != curpid))
1861	{	2041	{
1862	curpid = getpid ();	2042	curpid = getpid ();
…		…
1879	{	2059	{
1880	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2060	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1881	call_pending (EV_A);	2061	call_pending (EV_A);
1882	}	2062	}
1883		2063
1884	if (expect_false (!activecnt))
1885	break;
1886
1887	/* we might have forked, so reify kernel state if necessary */	2064	/* we might have forked, so reify kernel state if necessary */
1888	if (expect_false (postfork))	2065	if (expect_false (postfork))
1889	loop_fork (EV_A);	2066	loop_fork (EV_A);
1890		2067
1891	/* update fd-related kernel structures */	2068	/* update fd-related kernel structures */
…		…
1970	ev_unloop (EV_P_ int how)	2147	ev_unloop (EV_P_ int how)
1971	{	2148	{
1972	loop_done = how;	2149	loop_done = how;
1973	}	2150	}
1974		2151
		2152	void
		2153	ev_ref (EV_P)
		2154	{
		2155	++activecnt;
		2156	}
		2157
		2158	void
		2159	ev_unref (EV_P)
		2160	{
		2161	--activecnt;
		2162	}
		2163
		2164	void
		2165	ev_now_update (EV_P)
		2166	{
		2167	time_update (EV_A_ 1e100);
		2168	}
		2169
		2170	void
		2171	ev_suspend (EV_P)
		2172	{
		2173	ev_now_update (EV_A);
		2174	}
		2175
		2176	void
		2177	ev_resume (EV_P)
		2178	{
		2179	ev_tstamp mn_prev = mn_now;
		2180
		2181	ev_now_update (EV_A);
		2182	timers_reschedule (EV_A_ mn_now - mn_prev);
		2183	#if EV_PERIODIC_ENABLE
		2184	/* TODO: really do this? */
		2185	periodics_reschedule (EV_A);
		2186	#endif
		2187	}
		2188
1975	/*****************************************************************************/	2189	/*****************************************************************************/
		2190	/* singly-linked list management, used when the expected list length is short */
1976		2191
1977	void inline_size	2192	inline_size void
1978	wlist_add (WL *head, WL elem)	2193	wlist_add (WL *head, WL elem)
1979	{	2194	{
1980	elem->next = *head;	2195	elem->next = *head;
1981	*head = elem;	2196	*head = elem;
1982	}	2197	}
1983		2198
1984	void inline_size	2199	inline_size void
1985	wlist_del (WL *head, WL elem)	2200	wlist_del (WL *head, WL elem)
1986	{	2201	{
1987	while (*head)	2202	while (*head)
1988	{	2203	{
1989	if (*head == elem)	2204	if (*head == elem)
…		…
1994		2209
1995	head = &(*head)->next;	2210	head = &(*head)->next;
1996	}	2211	}
1997	}	2212	}
1998		2213
1999	void inline_speed	2214	/* internal, faster, version of ev_clear_pending */
		2215	inline_speed void
2000	clear_pending (EV_P_ W w)	2216	clear_pending (EV_P_ W w)
2001	{	2217	{
2002	if (w->pending)	2218	if (w->pending)
2003	{	2219	{
2004	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2220	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2005	w->pending = 0;	2221	w->pending = 0;
2006	}	2222	}
2007	}	2223	}
2008		2224
2009	int	2225	int
…		…
2013	int pending = w_->pending;	2229	int pending = w_->pending;
2014		2230
2015	if (expect_true (pending))	2231	if (expect_true (pending))
2016	{	2232	{
2017	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2233	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2234	p->w = (W)&pending_w;
2018	w_->pending = 0;	2235	w_->pending = 0;
2019	p->w = 0;
2020	return p->events;	2236	return p->events;
2021	}	2237	}
2022	else	2238	else
2023	return 0;	2239	return 0;
2024	}	2240	}
2025		2241
2026	void inline_size	2242	inline_size void
2027	pri_adjust (EV_P_ W w)	2243	pri_adjust (EV_P_ W w)
2028	{	2244	{
2029	int pri = w->priority;	2245	int pri = w->priority;
2030	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2246	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2031	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2247	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2032	w->priority = pri;	2248	w->priority = pri;
2033	}	2249	}
2034		2250
2035	void inline_speed	2251	inline_speed void
2036	ev_start (EV_P_ W w, int active)	2252	ev_start (EV_P_ W w, int active)
2037	{	2253	{
2038	pri_adjust (EV_A_ w);	2254	pri_adjust (EV_A_ w);
2039	w->active = active;	2255	w->active = active;
2040	ev_ref (EV_A);	2256	ev_ref (EV_A);
2041	}	2257	}
2042		2258
2043	void inline_size	2259	inline_size void
2044	ev_stop (EV_P_ W w)	2260	ev_stop (EV_P_ W w)
2045	{	2261	{
2046	ev_unref (EV_A);	2262	ev_unref (EV_A);
2047	w->active = 0;	2263	w->active = 0;
2048	}	2264	}
…		…
2055	int fd = w->fd;	2271	int fd = w->fd;
2056		2272
2057	if (expect_false (ev_is_active (w)))	2273	if (expect_false (ev_is_active (w)))
2058	return;	2274	return;
2059		2275
2060	assert (("ev_io_start called with negative fd", fd >= 0));	2276	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2277	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2061		2278
2062	EV_FREQUENT_CHECK;	2279	EV_FREQUENT_CHECK;
2063		2280
2064	ev_start (EV_A_ (W)w, 1);	2281	ev_start (EV_A_ (W)w, 1);
2065	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2282	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2066	wlist_add (&anfds[fd].head, (WL)w);	2283	wlist_add (&anfds[fd].head, (WL)w);
2067		2284
2068	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2285	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
2069	w->events &= ~EV_IOFDSET;	2286	w->events &= ~EV__IOFDSET;
2070		2287
2071	EV_FREQUENT_CHECK;	2288	EV_FREQUENT_CHECK;
2072	}	2289	}
2073		2290
2074	void noinline	2291	void noinline
…		…
2076	{	2293	{
2077	clear_pending (EV_A_ (W)w);	2294	clear_pending (EV_A_ (W)w);
2078	if (expect_false (!ev_is_active (w)))	2295	if (expect_false (!ev_is_active (w)))
2079	return;	2296	return;
2080		2297
2081	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2298	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2082		2299
2083	EV_FREQUENT_CHECK;	2300	EV_FREQUENT_CHECK;
2084		2301
2085	wlist_del (&anfds[w->fd].head, (WL)w);	2302	wlist_del (&anfds[w->fd].head, (WL)w);
2086	ev_stop (EV_A_ (W)w);	2303	ev_stop (EV_A_ (W)w);
…		…
2096	if (expect_false (ev_is_active (w)))	2313	if (expect_false (ev_is_active (w)))
2097	return;	2314	return;
2098		2315
2099	ev_at (w) += mn_now;	2316	ev_at (w) += mn_now;
2100		2317
2101	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2318	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2102		2319
2103	EV_FREQUENT_CHECK;	2320	EV_FREQUENT_CHECK;
2104		2321
2105	++timercnt;	2322	++timercnt;
2106	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);	2323	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
…		…
2109	ANHE_at_cache (timers [ev_active (w)]);	2326	ANHE_at_cache (timers [ev_active (w)]);
2110	upheap (timers, ev_active (w));	2327	upheap (timers, ev_active (w));
2111		2328
2112	EV_FREQUENT_CHECK;	2329	EV_FREQUENT_CHECK;
2113		2330
2114	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2331	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2115	}	2332	}
2116		2333
2117	void noinline	2334	void noinline
2118	ev_timer_stop (EV_P_ ev_timer *w)	2335	ev_timer_stop (EV_P_ ev_timer *w)
2119	{	2336	{
…		…
2124	EV_FREQUENT_CHECK;	2341	EV_FREQUENT_CHECK;
2125		2342
2126	{	2343	{
2127	int active = ev_active (w);	2344	int active = ev_active (w);
2128		2345
2129	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2346	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2130		2347
2131	--timercnt;	2348	--timercnt;
2132		2349
2133	if (expect_true (active < timercnt + HEAP0))	2350	if (expect_true (active < timercnt + HEAP0))
2134	{	2351	{
…		…
2178		2395
2179	if (w->reschedule_cb)	2396	if (w->reschedule_cb)
2180	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2397	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2181	else if (w->interval)	2398	else if (w->interval)
2182	{	2399	{
2183	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2400	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2184	/* this formula differs from the one in periodic_reify because we do not always round up */	2401	/* this formula differs from the one in periodic_reify because we do not always round up */
2185	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2402	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2186	}	2403	}
2187	else	2404	else
2188	ev_at (w) = w->offset;	2405	ev_at (w) = w->offset;
…		…
2196	ANHE_at_cache (periodics [ev_active (w)]);	2413	ANHE_at_cache (periodics [ev_active (w)]);
2197	upheap (periodics, ev_active (w));	2414	upheap (periodics, ev_active (w));
2198		2415
2199	EV_FREQUENT_CHECK;	2416	EV_FREQUENT_CHECK;
2200		2417
2201	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2418	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2202	}	2419	}
2203		2420
2204	void noinline	2421	void noinline
2205	ev_periodic_stop (EV_P_ ev_periodic *w)	2422	ev_periodic_stop (EV_P_ ev_periodic *w)
2206	{	2423	{
…		…
2211	EV_FREQUENT_CHECK;	2428	EV_FREQUENT_CHECK;
2212		2429
2213	{	2430	{
2214	int active = ev_active (w);	2431	int active = ev_active (w);
2215		2432
2216	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2433	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2217		2434
2218	--periodiccnt;	2435	--periodiccnt;
2219		2436
2220	if (expect_true (active < periodiccnt + HEAP0))	2437	if (expect_true (active < periodiccnt + HEAP0))
2221	{	2438	{
…		…
2244		2461
2245	void noinline	2462	void noinline
2246	ev_signal_start (EV_P_ ev_signal *w)	2463	ev_signal_start (EV_P_ ev_signal *w)
2247	{	2464	{
2248	#if EV_MULTIPLICITY	2465	#if EV_MULTIPLICITY
2249	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2466	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2250	#endif	2467	#endif
2251	if (expect_false (ev_is_active (w)))	2468	if (expect_false (ev_is_active (w)))
2252	return;	2469	return;
2253		2470
2254	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2471	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2255		2472
2256	evpipe_init (EV_A);	2473	evpipe_init (EV_A);
2257		2474
2258	EV_FREQUENT_CHECK;	2475	EV_FREQUENT_CHECK;
2259		2476
…		…
2262	sigset_t full, prev;	2479	sigset_t full, prev;
2263	sigfillset (&full);	2480	sigfillset (&full);
2264	sigprocmask (SIG_SETMASK, &full, &prev);	2481	sigprocmask (SIG_SETMASK, &full, &prev);
2265	#endif	2482	#endif
2266		2483
2267	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2484	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2268		2485
2269	#ifndef _WIN32	2486	#ifndef _WIN32
2270	sigprocmask (SIG_SETMASK, &prev, 0);	2487	sigprocmask (SIG_SETMASK, &prev, 0);
2271	#endif	2488	#endif
2272	}	2489	}
…		…
2310		2527
2311	void	2528	void
2312	ev_child_start (EV_P_ ev_child *w)	2529	ev_child_start (EV_P_ ev_child *w)
2313	{	2530	{
2314	#if EV_MULTIPLICITY	2531	#if EV_MULTIPLICITY
2315	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2532	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2316	#endif	2533	#endif
2317	if (expect_false (ev_is_active (w)))	2534	if (expect_false (ev_is_active (w)))
2318	return;	2535	return;
2319		2536
2320	EV_FREQUENT_CHECK;	2537	EV_FREQUENT_CHECK;
…		…
2345	# ifdef _WIN32	2562	# ifdef _WIN32
2346	# undef lstat	2563	# undef lstat
2347	# define lstat(a,b) _stati64 (a,b)	2564	# define lstat(a,b) _stati64 (a,b)
2348	# endif	2565	# endif
2349		2566
2350	#define DEF_STAT_INTERVAL 5.0074891	2567	#define DEF_STAT_INTERVAL 5.0074891
		2568	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2351	#define MIN_STAT_INTERVAL 0.1074891	2569	#define MIN_STAT_INTERVAL 0.1074891
2352		2570
2353	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2571	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2354		2572
2355	#if EV_USE_INOTIFY	2573	#if EV_USE_INOTIFY
2356	# define EV_INOTIFY_BUFSIZE 8192	2574	# define EV_INOTIFY_BUFSIZE 8192
…		…
2360	{	2578	{
2361	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);	2579	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);
2362		2580
2363	if (w->wd < 0)	2581	if (w->wd < 0)
2364	{	2582	{
		2583	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2365	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2584	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2366		2585
2367	/* monitor some parent directory for speedup hints */	2586	/* monitor some parent directory for speedup hints */
2368	/* note that exceeding the hardcoded limit is not a correctness issue, */	2587	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2369	/* but an efficiency issue only */	2588	/* but an efficiency issue only */
2370	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2589	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2371	{	2590	{
2372	char path [4096];	2591	char path [4096];
2373	strcpy (path, w->path);	2592	strcpy (path, w->path);
…		…
2377	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2596	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2378	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2597	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2379		2598
2380	char *pend = strrchr (path, '/');	2599	char *pend = strrchr (path, '/');
2381		2600
2382	if (!pend)	2601	if (!pend || pend == path)
2383	break; /* whoops, no '/', complain to your admin */	2602	break;
2384		2603
2385	*pend = 0;	2604	*pend = 0;
2386	w->wd = inotify_add_watch (fs_fd, path, mask);	2605	w->wd = inotify_add_watch (fs_fd, path, mask);
2387	}	2606	}
2388	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2607	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2389	}	2608	}
2390	}	2609	}
2391	else
2392	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2393		2610
2394	if (w->wd >= 0)	2611	if (w->wd >= 0)
		2612	{
2395	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2613	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2614
		2615	/* now local changes will be tracked by inotify, but remote changes won't */
		2616	/* unless the filesystem it known to be local, we therefore still poll */
		2617	/* also do poll on <2.6.25, but with normal frequency */
		2618	struct statfs sfs;
		2619
		2620	if (fs_2625 && !statfs (w->path, &sfs))
		2621	if (sfs.f_type == 0x1373 /* devfs */
		2622	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2623	|| sfs.f_type == 0x3153464a /* jfs */
		2624	|| sfs.f_type == 0x52654973 /* reiser3 */
		2625	|| sfs.f_type == 0x01021994 /* tempfs */
		2626	|| sfs.f_type == 0x58465342 /* xfs */)
		2627	return;
		2628
		2629	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2630	ev_timer_again (EV_A_ &w->timer);
		2631	}
2396	}	2632	}
2397		2633
2398	static void noinline	2634	static void noinline
2399	infy_del (EV_P_ ev_stat *w)	2635	infy_del (EV_P_ ev_stat *w)
2400	{	2636	{
…		…
2414		2650
2415	static void noinline	2651	static void noinline
2416	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2652	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2417	{	2653	{
2418	if (slot < 0)	2654	if (slot < 0)
2419	/* overflow, need to check for all hahs slots */	2655	/* overflow, need to check for all hash slots */
2420	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2656	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2421	infy_wd (EV_A_ slot, wd, ev);	2657	infy_wd (EV_A_ slot, wd, ev);
2422	else	2658	else
2423	{	2659	{
2424	WL w_;	2660	WL w_;
…		…
2430		2666
2431	if (w->wd == wd || wd == -1)	2667	if (w->wd == wd || wd == -1)
2432	{	2668	{
2433	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2669	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2434	{	2670	{
		2671	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2435	w->wd = -1;	2672	w->wd = -1;
2436	infy_add (EV_A_ w); /* re-add, no matter what */	2673	infy_add (EV_A_ w); /* re-add, no matter what */
2437	}	2674	}
2438		2675
2439	stat_timer_cb (EV_A_ &w->timer, 0);	2676	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2452		2689
2453	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2690	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2454	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2691	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2455	}	2692	}
2456		2693
2457	void inline_size	2694	inline_size void
		2695	check_2625 (EV_P)
		2696	{
		2697	/* kernels < 2.6.25 are borked
		2698	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2699	*/
		2700	struct utsname buf;
		2701	int major, minor, micro;
		2702
		2703	if (uname (&buf))
		2704	return;
		2705
		2706	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2707	return;
		2708
		2709	if (major < 2
		2710	|| (major == 2 && minor < 6)
		2711	|| (major == 2 && minor == 6 && micro < 25))
		2712	return;
		2713
		2714	fs_2625 = 1;
		2715	}
		2716
		2717	inline_size void
2458	infy_init (EV_P)	2718	infy_init (EV_P)
2459	{	2719	{
2460	if (fs_fd != -2)	2720	if (fs_fd != -2)
2461	return;	2721	return;
		2722
		2723	fs_fd = -1;
		2724
		2725	check_2625 (EV_A);
2462		2726
2463	fs_fd = inotify_init ();	2727	fs_fd = inotify_init ();
2464		2728
2465	if (fs_fd >= 0)	2729	if (fs_fd >= 0)
2466	{	2730	{
…		…
2468	ev_set_priority (&fs_w, EV_MAXPRI);	2732	ev_set_priority (&fs_w, EV_MAXPRI);
2469	ev_io_start (EV_A_ &fs_w);	2733	ev_io_start (EV_A_ &fs_w);
2470	}	2734	}
2471	}	2735	}
2472		2736
2473	void inline_size	2737	inline_size void
2474	infy_fork (EV_P)	2738	infy_fork (EV_P)
2475	{	2739	{
2476	int slot;	2740	int slot;
2477		2741
2478	if (fs_fd < 0)	2742	if (fs_fd < 0)
…		…
2494	w->wd = -1;	2758	w->wd = -1;
2495		2759
2496	if (fs_fd >= 0)	2760	if (fs_fd >= 0)
2497	infy_add (EV_A_ w); /* re-add, no matter what */	2761	infy_add (EV_A_ w); /* re-add, no matter what */
2498	else	2762	else
2499	ev_timer_start (EV_A_ &w->timer);	2763	ev_timer_again (EV_A_ &w->timer);
2500	}	2764	}
2501
2502	}	2765	}
2503	}	2766	}
2504		2767
		2768	#endif
		2769
		2770	#ifdef _WIN32
		2771	# define EV_LSTAT(p,b) _stati64 (p, b)
		2772	#else
		2773	# define EV_LSTAT(p,b) lstat (p, b)
2505	#endif	2774	#endif
2506		2775
2507	void	2776	void
2508	ev_stat_stat (EV_P_ ev_stat *w)	2777	ev_stat_stat (EV_P_ ev_stat *w)
2509	{	2778	{
…		…
2536	|| w->prev.st_atime != w->attr.st_atime	2805	|| w->prev.st_atime != w->attr.st_atime
2537	|| w->prev.st_mtime != w->attr.st_mtime	2806	|| w->prev.st_mtime != w->attr.st_mtime
2538	|| w->prev.st_ctime != w->attr.st_ctime	2807	|| w->prev.st_ctime != w->attr.st_ctime
2539	) {	2808	) {
2540	#if EV_USE_INOTIFY	2809	#if EV_USE_INOTIFY
		2810	if (fs_fd >= 0)
		2811	{
2541	infy_del (EV_A_ w);	2812	infy_del (EV_A_ w);
2542	infy_add (EV_A_ w);	2813	infy_add (EV_A_ w);
2543	ev_stat_stat (EV_A_ w); /* avoid race... */	2814	ev_stat_stat (EV_A_ w); /* avoid race... */
		2815	}
2544	#endif	2816	#endif
2545		2817
2546	ev_feed_event (EV_A_ w, EV_STAT);	2818	ev_feed_event (EV_A_ w, EV_STAT);
2547	}	2819	}
2548	}	2820	}
…		…
2551	ev_stat_start (EV_P_ ev_stat *w)	2823	ev_stat_start (EV_P_ ev_stat *w)
2552	{	2824	{
2553	if (expect_false (ev_is_active (w)))	2825	if (expect_false (ev_is_active (w)))
2554	return;	2826	return;
2555		2827
2556	/* since we use memcmp, we need to clear any padding data etc. */
2557	memset (&w->prev, 0, sizeof (ev_statdata));
2558	memset (&w->attr, 0, sizeof (ev_statdata));
2559
2560	ev_stat_stat (EV_A_ w);	2828	ev_stat_stat (EV_A_ w);
2561		2829
		2830	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2562	if (w->interval < MIN_STAT_INTERVAL)	2831	w->interval = MIN_STAT_INTERVAL;
2563	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2564		2832
2565	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2833	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2566	ev_set_priority (&w->timer, ev_priority (w));	2834	ev_set_priority (&w->timer, ev_priority (w));
2567		2835
2568	#if EV_USE_INOTIFY	2836	#if EV_USE_INOTIFY
2569	infy_init (EV_A);	2837	infy_init (EV_A);
2570		2838
2571	if (fs_fd >= 0)	2839	if (fs_fd >= 0)
2572	infy_add (EV_A_ w);	2840	infy_add (EV_A_ w);
2573	else	2841	else
2574	#endif	2842	#endif
2575	ev_timer_start (EV_A_ &w->timer);	2843	ev_timer_again (EV_A_ &w->timer);
2576		2844
2577	ev_start (EV_A_ (W)w, 1);	2845	ev_start (EV_A_ (W)w, 1);
2578		2846
2579	EV_FREQUENT_CHECK;	2847	EV_FREQUENT_CHECK;
2580	}	2848	}
…		…
2750	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3018	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2751	}	3019	}
2752	}	3020	}
2753	}	3021	}
2754		3022
		3023	static void
		3024	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3025	{
		3026	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3027
		3028	ev_embed_stop (EV_A_ w);
		3029
		3030	{
		3031	struct ev_loop *loop = w->other;
		3032
		3033	ev_loop_fork (EV_A);
		3034	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3035	}
		3036
		3037	ev_embed_start (EV_A_ w);
		3038	}
		3039
2755	#if 0	3040	#if 0
2756	static void	3041	static void
2757	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3042	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2758	{	3043	{
2759	ev_idle_stop (EV_A_ idle);	3044	ev_idle_stop (EV_A_ idle);
…		…
2766	if (expect_false (ev_is_active (w)))	3051	if (expect_false (ev_is_active (w)))
2767	return;	3052	return;
2768		3053
2769	{	3054	{
2770	struct ev_loop *loop = w->other;	3055	struct ev_loop *loop = w->other;
2771	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3056	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2772	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3057	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2773	}	3058	}
2774		3059
2775	EV_FREQUENT_CHECK;	3060	EV_FREQUENT_CHECK;
2776		3061
…		…
2779		3064
2780	ev_prepare_init (&w->prepare, embed_prepare_cb);	3065	ev_prepare_init (&w->prepare, embed_prepare_cb);
2781	ev_set_priority (&w->prepare, EV_MINPRI);	3066	ev_set_priority (&w->prepare, EV_MINPRI);
2782	ev_prepare_start (EV_A_ &w->prepare);	3067	ev_prepare_start (EV_A_ &w->prepare);
2783		3068
		3069	ev_fork_init (&w->fork, embed_fork_cb);
		3070	ev_fork_start (EV_A_ &w->fork);
		3071
2784	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3072	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2785		3073
2786	ev_start (EV_A_ (W)w, 1);	3074	ev_start (EV_A_ (W)w, 1);
2787		3075
2788	EV_FREQUENT_CHECK;	3076	EV_FREQUENT_CHECK;
…		…
2795	if (expect_false (!ev_is_active (w)))	3083	if (expect_false (!ev_is_active (w)))
2796	return;	3084	return;
2797		3085
2798	EV_FREQUENT_CHECK;	3086	EV_FREQUENT_CHECK;
2799		3087
2800	ev_io_stop (EV_A_ &w->io);	3088	ev_io_stop (EV_A_ &w->io);
2801	ev_prepare_stop (EV_A_ &w->prepare);	3089	ev_prepare_stop (EV_A_ &w->prepare);
2802		3090	ev_fork_stop (EV_A_ &w->fork);
2803	ev_stop (EV_A_ (W)w);
2804		3091
2805	EV_FREQUENT_CHECK;	3092	EV_FREQUENT_CHECK;
2806	}	3093	}
2807	#endif	3094	#endif
2808		3095
…		…
2905	once_cb (EV_P_ struct ev_once *once, int revents)	3192	once_cb (EV_P_ struct ev_once *once, int revents)
2906	{	3193	{
2907	void (*cb)(int revents, void *arg) = once->cb;	3194	void (*cb)(int revents, void *arg) = once->cb;
2908	void *arg = once->arg;	3195	void *arg = once->arg;
2909		3196
2910	ev_io_stop (EV_A_ &once->io);	3197	ev_io_stop (EV_A_ &once->io);
2911	ev_timer_stop (EV_A_ &once->to);	3198	ev_timer_stop (EV_A_ &once->to);
2912	ev_free (once);	3199	ev_free (once);
2913		3200
2914	cb (revents, arg);	3201	cb (revents, arg);
2915	}	3202	}
2916		3203
2917	static void	3204	static void
2918	once_cb_io (EV_P_ ev_io *w, int revents)	3205	once_cb_io (EV_P_ ev_io *w, int revents)
2919	{	3206	{
2920	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3207	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3208
		3209	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2921	}	3210	}
2922		3211
2923	static void	3212	static void
2924	once_cb_to (EV_P_ ev_timer *w, int revents)	3213	once_cb_to (EV_P_ ev_timer *w, int revents)
2925	{	3214	{
2926	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3215	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3216
		3217	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2927	}	3218	}
2928		3219
2929	void	3220	void
2930	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3221	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2931	{	3222	{
…		…
2953	ev_timer_set (&once->to, timeout, 0.);	3244	ev_timer_set (&once->to, timeout, 0.);
2954	ev_timer_start (EV_A_ &once->to);	3245	ev_timer_start (EV_A_ &once->to);
2955	}	3246	}
2956	}	3247	}
2957		3248
		3249	/*****************************************************************************/
		3250
		3251	#if EV_WALK_ENABLE
		3252	void
		3253	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3254	{
		3255	int i, j;
		3256	ev_watcher_list *wl, *wn;
		3257
		3258	if (types & (EV_IO | EV_EMBED))
		3259	for (i = 0; i < anfdmax; ++i)
		3260	for (wl = anfds [i].head; wl; )
		3261	{
		3262	wn = wl->next;
		3263
		3264	#if EV_EMBED_ENABLE
		3265	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3266	{
		3267	if (types & EV_EMBED)
		3268	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3269	}
		3270	else
		3271	#endif
		3272	#if EV_USE_INOTIFY
		3273	if (ev_cb ((ev_io *)wl) == infy_cb)
		3274	;
		3275	else
		3276	#endif
		3277	if ((ev_io *)wl != &pipe_w)
		3278	if (types & EV_IO)
		3279	cb (EV_A_ EV_IO, wl);
		3280
		3281	wl = wn;
		3282	}
		3283
		3284	if (types & (EV_TIMER | EV_STAT))
		3285	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3286	#if EV_STAT_ENABLE
		3287	/*TODO: timer is not always active*/
		3288	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3289	{
		3290	if (types & EV_STAT)
		3291	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3292	}
		3293	else
		3294	#endif
		3295	if (types & EV_TIMER)
		3296	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3297
		3298	#if EV_PERIODIC_ENABLE
		3299	if (types & EV_PERIODIC)
		3300	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3301	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3302	#endif
		3303
		3304	#if EV_IDLE_ENABLE
		3305	if (types & EV_IDLE)
		3306	for (j = NUMPRI; i--; )
		3307	for (i = idlecnt [j]; i--; )
		3308	cb (EV_A_ EV_IDLE, idles [j][i]);
		3309	#endif
		3310
		3311	#if EV_FORK_ENABLE
		3312	if (types & EV_FORK)
		3313	for (i = forkcnt; i--; )
		3314	if (ev_cb (forks [i]) != embed_fork_cb)
		3315	cb (EV_A_ EV_FORK, forks [i]);
		3316	#endif
		3317
		3318	#if EV_ASYNC_ENABLE
		3319	if (types & EV_ASYNC)
		3320	for (i = asynccnt; i--; )
		3321	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3322	#endif
		3323
		3324	if (types & EV_PREPARE)
		3325	for (i = preparecnt; i--; )
		3326	#if EV_EMBED_ENABLE
		3327	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3328	#endif
		3329	cb (EV_A_ EV_PREPARE, prepares [i]);
		3330
		3331	if (types & EV_CHECK)
		3332	for (i = checkcnt; i--; )
		3333	cb (EV_A_ EV_CHECK, checks [i]);
		3334
		3335	if (types & EV_SIGNAL)
		3336	for (i = 0; i < signalmax; ++i)
		3337	for (wl = signals [i].head; wl; )
		3338	{
		3339	wn = wl->next;
		3340	cb (EV_A_ EV_SIGNAL, wl);
		3341	wl = wn;
		3342	}
		3343
		3344	if (types & EV_CHILD)
		3345	for (i = EV_PID_HASHSIZE; i--; )
		3346	for (wl = childs [i]; wl; )
		3347	{
		3348	wn = wl->next;
		3349	cb (EV_A_ EV_CHILD, wl);
		3350	wl = wn;
		3351	}
		3352	/* EV_STAT 0x00001000 /* stat data changed */
		3353	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3354	}
		3355	#endif
		3356
2958	#if EV_MULTIPLICITY	3357	#if EV_MULTIPLICITY
2959	#include "ev_wrap.h"	3358	#include "ev_wrap.h"
2960	#endif	3359	#endif
2961		3360
2962	#ifdef __cplusplus	3361	#ifdef __cplusplus

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