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Comparing libev/ev.c (file contents):
Revision 1.249 by root, Wed May 21 23:30:52 2008 UTC vs.
Revision 1.293 by root, Mon Jun 29 18:46:52 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
…		…
236	# define EV_USE_EVENTFD 0	267	# define EV_USE_EVENTFD 0
237	# endif	268	# endif
238	#endif	269	#endif
239		270
240	#if 0 /* debugging */	271	#if 0 /* debugging */
241	# define EV_VERIFY 1	272	# define EV_VERIFY 3
242	# define EV_USE_4HEAP 1	273	# define EV_USE_4HEAP 1
243	# define EV_HEAP_CACHE_AT 1	274	# define EV_HEAP_CACHE_AT 1
244	#endif	275	#endif
245		276
		277	#ifndef EV_VERIFY
		278	# define EV_VERIFY !EV_MINIMAL
		279	#endif
		280
246	#ifndef EV_USE_4HEAP	281	#ifndef EV_USE_4HEAP
247	# define EV_USE_4HEAP !EV_MINIMAL	282	# define EV_USE_4HEAP !EV_MINIMAL
248	#endif	283	#endif
249		284
250	#ifndef EV_HEAP_CACHE_AT	285	#ifndef EV_HEAP_CACHE_AT
251	# 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
252	#endif	301	#endif
253		302
254	/* 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 */
255		304
256	#ifndef CLOCK_MONOTONIC	305	#ifndef CLOCK_MONOTONIC
…		…
273	# include <sys/select.h>	322	# include <sys/select.h>
274	# endif	323	# endif
275	#endif	324	#endif
276		325
277	#if EV_USE_INOTIFY	326	#if EV_USE_INOTIFY
		327	# include <sys/utsname.h>
		328	# include <sys/statfs.h>
278	# 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
279	#endif	335	#endif
280		336
281	#if EV_SELECT_IS_WINSOCKET	337	#if EV_SELECT_IS_WINSOCKET
282	# include <winsock.h>	338	# include <winsock.h>
283	#endif	339	#endif
…		…
294	# endif	350	# endif
295	#endif	351	#endif
296		352
297	/**/	353	/**/
298		354
299	/* EV_VERIFY: enable internal consistency checks
300	* undefined or zero: no verification done or available
301	* 1 or higher: ev_loop_verify function available
302	* 2 or higher: ev_loop_verify is called frequently
303	*/
304	#if EV_VERIFY >= 1	355	#if EV_VERIFY >= 3
305	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)	356	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
306	#else	357	#else
307	# define EV_FREQUENT_CHECK do { } while (0)	358	# define EV_FREQUENT_CHECK do { } while (0)
308	#endif	359	#endif
309		360
…		…
353	typedef ev_watcher_time *WT;	404	typedef ev_watcher_time *WT;
354		405
355	#define ev_active(w) ((W)(w))->active	406	#define ev_active(w) ((W)(w))->active
356	#define ev_at(w) ((WT)(w))->at	407	#define ev_at(w) ((WT)(w))->at
357		408
358	#if EV_USE_MONOTONIC	409	#if EV_USE_REALTIME
359	/* 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 */
360	/* 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
361	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? */
362	#endif	417	#endif
363		418
364	#ifdef _WIN32	419	#ifdef _WIN32
365	# include "ev_win32.c"	420	# include "ev_win32.c"
…		…
374	{	429	{
375	syserr_cb = cb;	430	syserr_cb = cb;
376	}	431	}
377		432
378	static void noinline	433	static void noinline
379	syserr (const char *msg)	434	ev_syserr (const char *msg)
380	{	435	{
381	if (!msg)	436	if (!msg)
382	msg = "(libev) system error";	437	msg = "(libev) system error";
383		438
384	if (syserr_cb)	439	if (syserr_cb)
…		…
430	#define ev_malloc(size) ev_realloc (0, (size))	485	#define ev_malloc(size) ev_realloc (0, (size))
431	#define ev_free(ptr) ev_realloc ((ptr), 0)	486	#define ev_free(ptr) ev_realloc ((ptr), 0)
432		487
433	/*****************************************************************************/	488	/*****************************************************************************/
434		489
		490	/* file descriptor info structure */
435	typedef struct	491	typedef struct
436	{	492	{
437	WL head;	493	WL head;
438	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 */
439	unsigned char reify;	497	unsigned char unused;
		498	#if EV_USE_EPOLL
		499	unsigned int egen; /* generation counter to counter epoll bugs */
		500	#endif
440	#if EV_SELECT_IS_WINSOCKET	501	#if EV_SELECT_IS_WINSOCKET
441	SOCKET handle;	502	SOCKET handle;
442	#endif	503	#endif
443	} ANFD;	504	} ANFD;
444		505
		506	/* stores the pending event set for a given watcher */
445	typedef struct	507	typedef struct
446	{	508	{
447	W w;	509	W w;
448	int events;	510	int events; /* the pending event set for the given watcher */
449	} ANPENDING;	511	} ANPENDING;
450		512
451	#if EV_USE_INOTIFY	513	#if EV_USE_INOTIFY
452	/* hash table entry per inotify-id */	514	/* hash table entry per inotify-id */
453	typedef struct	515	typedef struct
…		…
456	} ANFS;	518	} ANFS;
457	#endif	519	#endif
458		520
459	/* Heap Entry */	521	/* Heap Entry */
460	#if EV_HEAP_CACHE_AT	522	#if EV_HEAP_CACHE_AT
		523	/* a heap element */
461	typedef struct {	524	typedef struct {
462	ev_tstamp at;	525	ev_tstamp at;
463	WT w;	526	WT w;
464	} ANHE;	527	} ANHE;
465		528
466	#define ANHE_w(he) (he).w /* access watcher, read-write */	529	#define ANHE_w(he) (he).w /* access watcher, read-write */
467	#define ANHE_at(he) (he).at /* access cached at, read-only */	530	#define ANHE_at(he) (he).at /* access cached at, read-only */
468	#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 */
469	#else	532	#else
		533	/* a heap element */
470	typedef WT ANHE;	534	typedef WT ANHE;
471		535
472	#define ANHE_w(he) (he)	536	#define ANHE_w(he) (he)
473	#define ANHE_at(he) (he)->at	537	#define ANHE_at(he) (he)->at
474	#define ANHE_at_cache(he)	538	#define ANHE_at_cache(he)
…		…
500		564
501	#endif	565	#endif
502		566
503	/*****************************************************************************/	567	/*****************************************************************************/
504		568
		569	#ifndef EV_HAVE_EV_TIME
505	ev_tstamp	570	ev_tstamp
506	ev_time (void)	571	ev_time (void)
507	{	572	{
508	#if EV_USE_REALTIME	573	#if EV_USE_REALTIME
		574	if (expect_true (have_realtime))
		575	{
509	struct timespec ts;	576	struct timespec ts;
510	clock_gettime (CLOCK_REALTIME, &ts);	577	clock_gettime (CLOCK_REALTIME, &ts);
511	return ts.tv_sec + ts.tv_nsec * 1e-9;	578	return ts.tv_sec + ts.tv_nsec * 1e-9;
512	#else	579	}
		580	#endif
		581
513	struct timeval tv;	582	struct timeval tv;
514	gettimeofday (&tv, 0);	583	gettimeofday (&tv, 0);
515	return tv.tv_sec + tv.tv_usec * 1e-6;	584	return tv.tv_sec + tv.tv_usec * 1e-6;
516	#endif
517	}	585	}
		586	#endif
518		587
519	ev_tstamp inline_size	588	inline_size ev_tstamp
520	get_clock (void)	589	get_clock (void)
521	{	590	{
522	#if EV_USE_MONOTONIC	591	#if EV_USE_MONOTONIC
523	if (expect_true (have_monotonic))	592	if (expect_true (have_monotonic))
524	{	593	{
…		…
557	struct timeval tv;	626	struct timeval tv;
558		627
559	tv.tv_sec = (time_t)delay;	628	tv.tv_sec = (time_t)delay;
560	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	629	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
561		630
		631	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		632	/* somehting not guaranteed by newer posix versions, but guaranteed */
		633	/* by older ones */
562	select (0, 0, 0, 0, &tv);	634	select (0, 0, 0, 0, &tv);
563	#endif	635	#endif
564	}	636	}
565	}	637	}
566		638
567	/*****************************************************************************/	639	/*****************************************************************************/
568		640
569	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	641	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
570		642
571	int inline_size	643	/* find a suitable new size for the given array, */
		644	/* hopefully by rounding to a ncie-to-malloc size */
		645	inline_size int
572	array_nextsize (int elem, int cur, int cnt)	646	array_nextsize (int elem, int cur, int cnt)
573	{	647	{
574	int ncur = cur + 1;	648	int ncur = cur + 1;
575		649
576	do	650	do
…		…
593	array_realloc (int elem, void *base, int *cur, int cnt)	667	array_realloc (int elem, void *base, int *cur, int cnt)
594	{	668	{
595	*cur = array_nextsize (elem, *cur, cnt);	669	*cur = array_nextsize (elem, *cur, cnt);
596	return ev_realloc (base, elem * *cur);	670	return ev_realloc (base, elem * *cur);
597	}	671	}
		672
		673	#define array_init_zero(base,count) \
		674	memset ((void *)(base), 0, sizeof (*(base)) * (count))
598		675
599	#define array_needsize(type,base,cur,cnt,init) \	676	#define array_needsize(type,base,cur,cnt,init) \
600	if (expect_false ((cnt) > (cur))) \	677	if (expect_false ((cnt) > (cur))) \
601	{ \	678	{ \
602	int ocur_ = (cur); \	679	int ocur_ = (cur); \
…		…
614	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	691	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
615	}	692	}
616	#endif	693	#endif
617		694
618	#define array_free(stem, idx) \	695	#define array_free(stem, idx) \
619	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	696	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
620		697
621	/*****************************************************************************/	698	/*****************************************************************************/
		699
		700	/* dummy callback for pending events */
		701	static void noinline
		702	pendingcb (EV_P_ ev_prepare *w, int revents)
		703	{
		704	}
622		705
623	void noinline	706	void noinline
624	ev_feed_event (EV_P_ void *w, int revents)	707	ev_feed_event (EV_P_ void *w, int revents)
625	{	708	{
626	W w_ = (W)w;	709	W w_ = (W)w;
…		…
635	pendings [pri][w_->pending - 1].w = w_;	718	pendings [pri][w_->pending - 1].w = w_;
636	pendings [pri][w_->pending - 1].events = revents;	719	pendings [pri][w_->pending - 1].events = revents;
637	}	720	}
638	}	721	}
639		722
640	void inline_speed	723	inline_speed void
		724	feed_reverse (EV_P_ W w)
		725	{
		726	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		727	rfeeds [rfeedcnt++] = w;
		728	}
		729
		730	inline_size void
		731	feed_reverse_done (EV_P_ int revents)
		732	{
		733	do
		734	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		735	while (rfeedcnt);
		736	}
		737
		738	inline_speed void
641	queue_events (EV_P_ W *events, int eventcnt, int type)	739	queue_events (EV_P_ W *events, int eventcnt, int type)
642	{	740	{
643	int i;	741	int i;
644		742
645	for (i = 0; i < eventcnt; ++i)	743	for (i = 0; i < eventcnt; ++i)
646	ev_feed_event (EV_A_ events [i], type);	744	ev_feed_event (EV_A_ events [i], type);
647	}	745	}
648		746
649	/*****************************************************************************/	747	/*****************************************************************************/
650		748
651	void inline_size	749	inline_speed void
652	anfds_init (ANFD *base, int count)
653	{
654	while (count--)
655	{
656	base->head = 0;
657	base->events = EV_NONE;
658	base->reify = 0;
659
660	++base;
661	}
662	}
663
664	void inline_speed
665	fd_event (EV_P_ int fd, int revents)	750	fd_event (EV_P_ int fd, int revents)
666	{	751	{
667	ANFD *anfd = anfds + fd;	752	ANFD *anfd = anfds + fd;
668	ev_io *w;	753	ev_io *w;
669		754
…		…
681	{	766	{
682	if (fd >= 0 && fd < anfdmax)	767	if (fd >= 0 && fd < anfdmax)
683	fd_event (EV_A_ fd, revents);	768	fd_event (EV_A_ fd, revents);
684	}	769	}
685		770
686	void inline_size	771	/* make sure the external fd watch events are in-sync */
		772	/* with the kernel/libev internal state */
		773	inline_size void
687	fd_reify (EV_P)	774	fd_reify (EV_P)
688	{	775	{
689	int i;	776	int i;
690		777
691	for (i = 0; i < fdchangecnt; ++i)	778	for (i = 0; i < fdchangecnt; ++i)
…		…
700	events |= (unsigned char)w->events;	787	events |= (unsigned char)w->events;
701		788
702	#if EV_SELECT_IS_WINSOCKET	789	#if EV_SELECT_IS_WINSOCKET
703	if (events)	790	if (events)
704	{	791	{
705	unsigned long argp;	792	unsigned long arg;
706	#ifdef EV_FD_TO_WIN32_HANDLE	793	#ifdef EV_FD_TO_WIN32_HANDLE
707	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	794	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
708	#else	795	#else
709	anfd->handle = _get_osfhandle (fd);	796	anfd->handle = _get_osfhandle (fd);
710	#endif	797	#endif
711	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	798	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
712	}	799	}
713	#endif	800	#endif
714		801
715	{	802	{
716	unsigned char o_events = anfd->events;	803	unsigned char o_events = anfd->events;
717	unsigned char o_reify = anfd->reify;	804	unsigned char o_reify = anfd->reify;
718		805
719	anfd->reify = 0;	806	anfd->reify = 0;
720	anfd->events = events;	807	anfd->events = events;
721		808
722	if (o_events != events || o_reify & EV_IOFDSET)	809	if (o_events != events || o_reify & EV__IOFDSET)
723	backend_modify (EV_A_ fd, o_events, events);	810	backend_modify (EV_A_ fd, o_events, events);
724	}	811	}
725	}	812	}
726		813
727	fdchangecnt = 0;	814	fdchangecnt = 0;
728	}	815	}
729		816
730	void inline_size	817	/* something about the given fd changed */
		818	inline_size void
731	fd_change (EV_P_ int fd, int flags)	819	fd_change (EV_P_ int fd, int flags)
732	{	820	{
733	unsigned char reify = anfds [fd].reify;	821	unsigned char reify = anfds [fd].reify;
734	anfds [fd].reify |= flags;	822	anfds [fd].reify |= flags;
735		823
…		…
739	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	827	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
740	fdchanges [fdchangecnt - 1] = fd;	828	fdchanges [fdchangecnt - 1] = fd;
741	}	829	}
742	}	830	}
743		831
744	void inline_speed	832	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		833	inline_speed void
745	fd_kill (EV_P_ int fd)	834	fd_kill (EV_P_ int fd)
746	{	835	{
747	ev_io *w;	836	ev_io *w;
748		837
749	while ((w = (ev_io *)anfds [fd].head))	838	while ((w = (ev_io *)anfds [fd].head))
…		…
751	ev_io_stop (EV_A_ w);	840	ev_io_stop (EV_A_ w);
752	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	841	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
753	}	842	}
754	}	843	}
755		844
756	int inline_size	845	/* check whether the given fd is atcually valid, for error recovery */
		846	inline_size int
757	fd_valid (int fd)	847	fd_valid (int fd)
758	{	848	{
759	#ifdef _WIN32	849	#ifdef _WIN32
760	return _get_osfhandle (fd) != -1;	850	return _get_osfhandle (fd) != -1;
761	#else	851	#else
…		…
769	{	859	{
770	int fd;	860	int fd;
771		861
772	for (fd = 0; fd < anfdmax; ++fd)	862	for (fd = 0; fd < anfdmax; ++fd)
773	if (anfds [fd].events)	863	if (anfds [fd].events)
774	if (!fd_valid (fd) == -1 && errno == EBADF)	864	if (!fd_valid (fd) && errno == EBADF)
775	fd_kill (EV_A_ fd);	865	fd_kill (EV_A_ fd);
776	}	866	}
777		867
778	/* called on ENOMEM in select/poll to kill some fds and retry */	868	/* called on ENOMEM in select/poll to kill some fds and retry */
779	static void noinline	869	static void noinline
…		…
797		887
798	for (fd = 0; fd < anfdmax; ++fd)	888	for (fd = 0; fd < anfdmax; ++fd)
799	if (anfds [fd].events)	889	if (anfds [fd].events)
800	{	890	{
801	anfds [fd].events = 0;	891	anfds [fd].events = 0;
		892	anfds [fd].emask = 0;
802	fd_change (EV_A_ fd, EV_IOFDSET | 1);	893	fd_change (EV_A_ fd, EV__IOFDSET | 1);
803	}	894	}
804	}	895	}
805		896
806	/*****************************************************************************/	897	/*****************************************************************************/
807		898
…		…
823	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	914	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
824	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)	915	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
825	#define UPHEAP_DONE(p,k) ((p) == (k))	916	#define UPHEAP_DONE(p,k) ((p) == (k))
826		917
827	/* away from the root */	918	/* away from the root */
828	void inline_speed	919	inline_speed void
829	downheap (ANHE *heap, int N, int k)	920	downheap (ANHE *heap, int N, int k)
830	{	921	{
831	ANHE he = heap [k];	922	ANHE he = heap [k];
832	ANHE *E = heap + N + HEAP0;	923	ANHE *E = heap + N + HEAP0;
833		924
…		…
873	#define HEAP0 1	964	#define HEAP0 1
874	#define HPARENT(k) ((k) >> 1)	965	#define HPARENT(k) ((k) >> 1)
875	#define UPHEAP_DONE(p,k) (!(p))	966	#define UPHEAP_DONE(p,k) (!(p))
876		967
877	/* away from the root */	968	/* away from the root */
878	void inline_speed	969	inline_speed void
879	downheap (ANHE *heap, int N, int k)	970	downheap (ANHE *heap, int N, int k)
880	{	971	{
881	ANHE he = heap [k];	972	ANHE he = heap [k];
882		973
883	for (;;)	974	for (;;)
…		…
903	ev_active (ANHE_w (he)) = k;	994	ev_active (ANHE_w (he)) = k;
904	}	995	}
905	#endif	996	#endif
906		997
907	/* towards the root */	998	/* towards the root */
908	void inline_speed	999	inline_speed void
909	upheap (ANHE *heap, int k)	1000	upheap (ANHE *heap, int k)
910	{	1001	{
911	ANHE he = heap [k];	1002	ANHE he = heap [k];
912		1003
913	for (;;)	1004	for (;;)
…		…
924		1015
925	heap [k] = he;	1016	heap [k] = he;
926	ev_active (ANHE_w (he)) = k;	1017	ev_active (ANHE_w (he)) = k;
927	}	1018	}
928		1019
929	void inline_size	1020	/* move an element suitably so it is in a correct place */
		1021	inline_size void
930	adjustheap (ANHE *heap, int N, int k)	1022	adjustheap (ANHE *heap, int N, int k)
931	{	1023	{
932	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1024	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
933	upheap (heap, k);	1025	upheap (heap, k);
934	else	1026	else
935	downheap (heap, N, k);	1027	downheap (heap, N, k);
936	}	1028	}
937		1029
938	/* rebuild the heap: this function is used only once and executed rarely */	1030	/* rebuild the heap: this function is used only once and executed rarely */
939	void inline_size	1031	inline_size void
940	reheap (ANHE *heap, int N)	1032	reheap (ANHE *heap, int N)
941	{	1033	{
942	int i;	1034	int i;
		1035
943	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */	1036	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
944	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */	1037	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
945	for (i = 0; i < N; ++i)	1038	for (i = 0; i < N; ++i)
946	upheap (heap, i + HEAP0);	1039	upheap (heap, i + HEAP0);
947	}	1040	}
948		1041
949	#if EV_VERIFY
950	static void
951	checkheap (ANHE *heap, int N)
952	{
953	int i;
954
955	for (i = HEAP0; i < N + HEAP0; ++i)
956	{
957	assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
958	assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
959	assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
960	}
961	}
962	#endif
963
964	/*****************************************************************************/	1042	/*****************************************************************************/
965		1043
		1044	/* associate signal watchers to a signal signal */
966	typedef struct	1045	typedef struct
967	{	1046	{
968	WL head;	1047	WL head;
969	EV_ATOMIC_T gotsig;	1048	EV_ATOMIC_T gotsig;
970	} ANSIG;	1049	} ANSIG;
…		…
972	static ANSIG *signals;	1051	static ANSIG *signals;
973	static int signalmax;	1052	static int signalmax;
974		1053
975	static EV_ATOMIC_T gotsig;	1054	static EV_ATOMIC_T gotsig;
976		1055
977	void inline_size
978	signals_init (ANSIG *base, int count)
979	{
980	while (count--)
981	{
982	base->head = 0;
983	base->gotsig = 0;
984
985	++base;
986	}
987	}
988
989	/*****************************************************************************/	1056	/*****************************************************************************/
990		1057
991	void inline_speed	1058	/* used to prepare libev internal fd's */
		1059	/* this is not fork-safe */
		1060	inline_speed void
992	fd_intern (int fd)	1061	fd_intern (int fd)
993	{	1062	{
994	#ifdef _WIN32	1063	#ifdef _WIN32
995	int arg = 1;	1064	unsigned long arg = 1;
996	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1065	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
997	#else	1066	#else
998	fcntl (fd, F_SETFD, FD_CLOEXEC);	1067	fcntl (fd, F_SETFD, FD_CLOEXEC);
999	fcntl (fd, F_SETFL, O_NONBLOCK);	1068	fcntl (fd, F_SETFL, O_NONBLOCK);
1000	#endif	1069	#endif
1001	}	1070	}
1002		1071
1003	static void noinline	1072	static void noinline
1004	evpipe_init (EV_P)	1073	evpipe_init (EV_P)
1005	{	1074	{
1006	if (!ev_is_active (&pipeev))	1075	if (!ev_is_active (&pipe_w))
1007	{	1076	{
1008	#if EV_USE_EVENTFD	1077	#if EV_USE_EVENTFD
1009	if ((evfd = eventfd (0, 0)) >= 0)	1078	if ((evfd = eventfd (0, 0)) >= 0)
1010	{	1079	{
1011	evpipe [0] = -1;	1080	evpipe [0] = -1;
1012	fd_intern (evfd);	1081	fd_intern (evfd);
1013	ev_io_set (&pipeev, evfd, EV_READ);	1082	ev_io_set (&pipe_w, evfd, EV_READ);
1014	}	1083	}
1015	else	1084	else
1016	#endif	1085	#endif
1017	{	1086	{
1018	while (pipe (evpipe))	1087	while (pipe (evpipe))
1019	syserr ("(libev) error creating signal/async pipe");	1088	ev_syserr ("(libev) error creating signal/async pipe");
1020		1089
1021	fd_intern (evpipe [0]);	1090	fd_intern (evpipe [0]);
1022	fd_intern (evpipe [1]);	1091	fd_intern (evpipe [1]);
1023	ev_io_set (&pipeev, evpipe [0], EV_READ);	1092	ev_io_set (&pipe_w, evpipe [0], EV_READ);
1024	}	1093	}
1025		1094
1026	ev_io_start (EV_A_ &pipeev);	1095	ev_io_start (EV_A_ &pipe_w);
1027	ev_unref (EV_A); /* watcher should not keep loop alive */	1096	ev_unref (EV_A); /* watcher should not keep loop alive */
1028	}	1097	}
1029	}	1098	}
1030		1099
1031	void inline_size	1100	inline_size void
1032	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1101	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1033	{	1102	{
1034	if (!*flag)	1103	if (!*flag)
1035	{	1104	{
1036	int old_errno = errno; /* save errno because write might clobber it */	1105	int old_errno = errno; /* save errno because write might clobber it */
…		…
1049		1118
1050	errno = old_errno;	1119	errno = old_errno;
1051	}	1120	}
1052	}	1121	}
1053		1122
		1123	/* called whenever the libev signal pipe */
		1124	/* got some events (signal, async) */
1054	static void	1125	static void
1055	pipecb (EV_P_ ev_io *iow, int revents)	1126	pipecb (EV_P_ ev_io *iow, int revents)
1056	{	1127	{
1057	#if EV_USE_EVENTFD	1128	#if EV_USE_EVENTFD
1058	if (evfd >= 0)	1129	if (evfd >= 0)
…		…
1114	ev_feed_signal_event (EV_P_ int signum)	1185	ev_feed_signal_event (EV_P_ int signum)
1115	{	1186	{
1116	WL w;	1187	WL w;
1117		1188
1118	#if EV_MULTIPLICITY	1189	#if EV_MULTIPLICITY
1119	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1190	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1120	#endif	1191	#endif
1121		1192
1122	--signum;	1193	--signum;
1123		1194
1124	if (signum < 0 || signum >= signalmax)	1195	if (signum < 0 || signum >= signalmax)
…		…
1140		1211
1141	#ifndef WIFCONTINUED	1212	#ifndef WIFCONTINUED
1142	# define WIFCONTINUED(status) 0	1213	# define WIFCONTINUED(status) 0
1143	#endif	1214	#endif
1144		1215
1145	void inline_speed	1216	/* handle a single child status event */
		1217	inline_speed void
1146	child_reap (EV_P_ int chain, int pid, int status)	1218	child_reap (EV_P_ int chain, int pid, int status)
1147	{	1219	{
1148	ev_child *w;	1220	ev_child *w;
1149	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1221	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1150		1222
…		…
1163		1235
1164	#ifndef WCONTINUED	1236	#ifndef WCONTINUED
1165	# define WCONTINUED 0	1237	# define WCONTINUED 0
1166	#endif	1238	#endif
1167		1239
		1240	/* called on sigchld etc., calls waitpid */
1168	static void	1241	static void
1169	childcb (EV_P_ ev_signal *sw, int revents)	1242	childcb (EV_P_ ev_signal *sw, int revents)
1170	{	1243	{
1171	int pid, status;	1244	int pid, status;
1172		1245
…		…
1253	/* kqueue is borked on everything but netbsd apparently */	1326	/* kqueue is borked on everything but netbsd apparently */
1254	/* it usually doesn't work correctly on anything but sockets and pipes */	1327	/* it usually doesn't work correctly on anything but sockets and pipes */
1255	flags &= ~EVBACKEND_KQUEUE;	1328	flags &= ~EVBACKEND_KQUEUE;
1256	#endif	1329	#endif
1257	#ifdef __APPLE__	1330	#ifdef __APPLE__
1258	// flags &= ~EVBACKEND_KQUEUE; for documentation	1331	/* only select works correctly on that "unix-certified" platform */
1259	flags &= ~EVBACKEND_POLL;	1332	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1333	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1260	#endif	1334	#endif
1261		1335
1262	return flags;	1336	return flags;
1263	}	1337	}
1264		1338
…		…
1296	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1370	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1297	{	1371	{
1298	timeout_blocktime = interval;	1372	timeout_blocktime = interval;
1299	}	1373	}
1300		1374
		1375	/* initialise a loop structure, must be zero-initialised */
1301	static void noinline	1376	static void noinline
1302	loop_init (EV_P_ unsigned int flags)	1377	loop_init (EV_P_ unsigned int flags)
1303	{	1378	{
1304	if (!backend)	1379	if (!backend)
1305	{	1380	{
		1381	#if EV_USE_REALTIME
		1382	if (!have_realtime)
		1383	{
		1384	struct timespec ts;
		1385
		1386	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1387	have_realtime = 1;
		1388	}
		1389	#endif
		1390
1306	#if EV_USE_MONOTONIC	1391	#if EV_USE_MONOTONIC
		1392	if (!have_monotonic)
1307	{	1393	{
1308	struct timespec ts;	1394	struct timespec ts;
		1395
1309	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1396	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1310	have_monotonic = 1;	1397	have_monotonic = 1;
1311	}	1398	}
1312	#endif	1399	#endif
1313		1400
1314	ev_rt_now = ev_time ();	1401	ev_rt_now = ev_time ();
1315	mn_now = get_clock ();	1402	mn_now = get_clock ();
1316	now_floor = mn_now;	1403	now_floor = mn_now;
…		…
1353	#endif	1440	#endif
1354	#if EV_USE_SELECT	1441	#if EV_USE_SELECT
1355	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1442	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1356	#endif	1443	#endif
1357		1444
		1445	ev_prepare_init (&pending_w, pendingcb);
		1446
1358	ev_init (&pipeev, pipecb);	1447	ev_init (&pipe_w, pipecb);
1359	ev_set_priority (&pipeev, EV_MAXPRI);	1448	ev_set_priority (&pipe_w, EV_MAXPRI);
1360	}	1449	}
1361	}	1450	}
1362		1451
		1452	/* free up a loop structure */
1363	static void noinline	1453	static void noinline
1364	loop_destroy (EV_P)	1454	loop_destroy (EV_P)
1365	{	1455	{
1366	int i;	1456	int i;
1367		1457
1368	if (ev_is_active (&pipeev))	1458	if (ev_is_active (&pipe_w))
1369	{	1459	{
1370	ev_ref (EV_A); /* signal watcher */	1460	ev_ref (EV_A); /* signal watcher */
1371	ev_io_stop (EV_A_ &pipeev);	1461	ev_io_stop (EV_A_ &pipe_w);
1372		1462
1373	#if EV_USE_EVENTFD	1463	#if EV_USE_EVENTFD
1374	if (evfd >= 0)	1464	if (evfd >= 0)
1375	close (evfd);	1465	close (evfd);
1376	#endif	1466	#endif
…		…
1415	}	1505	}
1416		1506
1417	ev_free (anfds); anfdmax = 0;	1507	ev_free (anfds); anfdmax = 0;
1418		1508
1419	/* have to use the microsoft-never-gets-it-right macro */	1509	/* have to use the microsoft-never-gets-it-right macro */
		1510	array_free (rfeed, EMPTY);
1420	array_free (fdchange, EMPTY);	1511	array_free (fdchange, EMPTY);
1421	array_free (timer, EMPTY);	1512	array_free (timer, EMPTY);
1422	#if EV_PERIODIC_ENABLE	1513	#if EV_PERIODIC_ENABLE
1423	array_free (periodic, EMPTY);	1514	array_free (periodic, EMPTY);
1424	#endif	1515	#endif
…		…
1433		1524
1434	backend = 0;	1525	backend = 0;
1435	}	1526	}
1436		1527
1437	#if EV_USE_INOTIFY	1528	#if EV_USE_INOTIFY
1438	void inline_size infy_fork (EV_P);	1529	inline_size void infy_fork (EV_P);
1439	#endif	1530	#endif
1440		1531
1441	void inline_size	1532	inline_size void
1442	loop_fork (EV_P)	1533	loop_fork (EV_P)
1443	{	1534	{
1444	#if EV_USE_PORT	1535	#if EV_USE_PORT
1445	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1536	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1446	#endif	1537	#endif
…		…
1452	#endif	1543	#endif
1453	#if EV_USE_INOTIFY	1544	#if EV_USE_INOTIFY
1454	infy_fork (EV_A);	1545	infy_fork (EV_A);
1455	#endif	1546	#endif
1456		1547
1457	if (ev_is_active (&pipeev))	1548	if (ev_is_active (&pipe_w))
1458	{	1549	{
1459	/* this "locks" the handlers against writing to the pipe */	1550	/* this "locks" the handlers against writing to the pipe */
1460	/* while we modify the fd vars */	1551	/* while we modify the fd vars */
1461	gotsig = 1;	1552	gotsig = 1;
1462	#if EV_ASYNC_ENABLE	1553	#if EV_ASYNC_ENABLE
1463	gotasync = 1;	1554	gotasync = 1;
1464	#endif	1555	#endif
1465		1556
1466	ev_ref (EV_A);	1557	ev_ref (EV_A);
1467	ev_io_stop (EV_A_ &pipeev);	1558	ev_io_stop (EV_A_ &pipe_w);
1468		1559
1469	#if EV_USE_EVENTFD	1560	#if EV_USE_EVENTFD
1470	if (evfd >= 0)	1561	if (evfd >= 0)
1471	close (evfd);	1562	close (evfd);
1472	#endif	1563	#endif
…		…
1477	close (evpipe [1]);	1568	close (evpipe [1]);
1478	}	1569	}
1479		1570
1480	evpipe_init (EV_A);	1571	evpipe_init (EV_A);
1481	/* now iterate over everything, in case we missed something */	1572	/* now iterate over everything, in case we missed something */
1482	pipecb (EV_A_ &pipeev, EV_READ);	1573	pipecb (EV_A_ &pipe_w, EV_READ);
1483	}	1574	}
1484		1575
1485	postfork = 0;	1576	postfork = 0;
1486	}	1577	}
1487		1578
1488	#if EV_MULTIPLICITY	1579	#if EV_MULTIPLICITY
		1580
1489	struct ev_loop *	1581	struct ev_loop *
1490	ev_loop_new (unsigned int flags)	1582	ev_loop_new (unsigned int flags)
1491	{	1583	{
1492	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1584	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1493		1585
…		…
1513	{	1605	{
1514	postfork = 1; /* must be in line with ev_default_fork */	1606	postfork = 1; /* must be in line with ev_default_fork */
1515	}	1607	}
1516		1608
1517	#if EV_VERIFY	1609	#if EV_VERIFY
1518	static void	1610	static void noinline
		1611	verify_watcher (EV_P_ W w)
		1612	{
		1613	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1614
		1615	if (w->pending)
		1616	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1617	}
		1618
		1619	static void noinline
		1620	verify_heap (EV_P_ ANHE *heap, int N)
		1621	{
		1622	int i;
		1623
		1624	for (i = HEAP0; i < N + HEAP0; ++i)
		1625	{
		1626	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1627	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1628	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1629
		1630	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1631	}
		1632	}
		1633
		1634	static void noinline
1519	array_check (W **ws, int cnt)	1635	array_verify (EV_P_ W *ws, int cnt)
1520	{	1636	{
1521	while (cnt--)	1637	while (cnt--)
		1638	{
1522	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));	1639	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1640	verify_watcher (EV_A_ ws [cnt]);
		1641	}
1523	}	1642	}
		1643	#endif
1524		1644
1525	static void	1645	void
1526	ev_loop_verify (EV_P)	1646	ev_loop_verify (EV_P)
1527	{	1647	{
		1648	#if EV_VERIFY
1528	int i;	1649	int i;
		1650	WL w;
1529		1651
		1652	assert (activecnt >= -1);
		1653
		1654	assert (fdchangemax >= fdchangecnt);
		1655	for (i = 0; i < fdchangecnt; ++i)
		1656	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1657
		1658	assert (anfdmax >= 0);
		1659	for (i = 0; i < anfdmax; ++i)
		1660	for (w = anfds [i].head; w; w = w->next)
		1661	{
		1662	verify_watcher (EV_A_ (W)w);
		1663	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1664	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1665	}
		1666
		1667	assert (timermax >= timercnt);
1530	checkheap (timers, timercnt);	1668	verify_heap (EV_A_ timers, timercnt);
		1669
1531	#if EV_PERIODIC_ENABLE	1670	#if EV_PERIODIC_ENABLE
		1671	assert (periodicmax >= periodiccnt);
1532	checkheap (periodics, periodiccnt);	1672	verify_heap (EV_A_ periodics, periodiccnt);
1533	#endif	1673	#endif
1534		1674
		1675	for (i = NUMPRI; i--; )
		1676	{
		1677	assert (pendingmax [i] >= pendingcnt [i]);
1535	#if EV_IDLE_ENABLE	1678	#if EV_IDLE_ENABLE
1536	for (i = NUMPRI; i--; )	1679	assert (idleall >= 0);
		1680	assert (idlemax [i] >= idlecnt [i]);
1537	array_check ((W **)idles [i], idlecnt [i]);	1681	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1538	#endif	1682	#endif
		1683	}
		1684
1539	#if EV_FORK_ENABLE	1685	#if EV_FORK_ENABLE
		1686	assert (forkmax >= forkcnt);
1540	array_check ((W **)forks, forkcnt);	1687	array_verify (EV_A_ (W *)forks, forkcnt);
1541	#endif	1688	#endif
1542	array_check ((W **)prepares, preparecnt);	1689
1543	array_check ((W **)checks, checkcnt);
1544	#if EV_ASYNC_ENABLE	1690	#if EV_ASYNC_ENABLE
		1691	assert (asyncmax >= asynccnt);
1545	array_check ((W **)asyncs, asynccnt);	1692	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1693	#endif
		1694
		1695	assert (preparemax >= preparecnt);
		1696	array_verify (EV_A_ (W *)prepares, preparecnt);
		1697
		1698	assert (checkmax >= checkcnt);
		1699	array_verify (EV_A_ (W *)checks, checkcnt);
		1700
		1701	# if 0
		1702	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1703	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1546	#endif	1704	# endif
1547	}
1548	#endif	1705	#endif
		1706	}
1549		1707
1550	#endif	1708	#endif /* multiplicity */
1551		1709
1552	#if EV_MULTIPLICITY	1710	#if EV_MULTIPLICITY
1553	struct ev_loop *	1711	struct ev_loop *
1554	ev_default_loop_init (unsigned int flags)	1712	ev_default_loop_init (unsigned int flags)
1555	#else	1713	#else
…		…
1588	{	1746	{
1589	#if EV_MULTIPLICITY	1747	#if EV_MULTIPLICITY
1590	struct ev_loop *loop = ev_default_loop_ptr;	1748	struct ev_loop *loop = ev_default_loop_ptr;
1591	#endif	1749	#endif
1592		1750
		1751	ev_default_loop_ptr = 0;
		1752
1593	#ifndef _WIN32	1753	#ifndef _WIN32
1594	ev_ref (EV_A); /* child watcher */	1754	ev_ref (EV_A); /* child watcher */
1595	ev_signal_stop (EV_A_ &childev);	1755	ev_signal_stop (EV_A_ &childev);
1596	#endif	1756	#endif
1597		1757
…		…
1603	{	1763	{
1604	#if EV_MULTIPLICITY	1764	#if EV_MULTIPLICITY
1605	struct ev_loop *loop = ev_default_loop_ptr;	1765	struct ev_loop *loop = ev_default_loop_ptr;
1606	#endif	1766	#endif
1607		1767
1608	if (backend)
1609	postfork = 1; /* must be in line with ev_loop_fork */	1768	postfork = 1; /* must be in line with ev_loop_fork */
1610	}	1769	}
1611		1770
1612	/*****************************************************************************/	1771	/*****************************************************************************/
1613		1772
1614	void	1773	void
1615	ev_invoke (EV_P_ void *w, int revents)	1774	ev_invoke (EV_P_ void *w, int revents)
1616	{	1775	{
1617	EV_CB_INVOKE ((W)w, revents);	1776	EV_CB_INVOKE ((W)w, revents);
1618	}	1777	}
1619		1778
1620	void inline_speed	1779	inline_speed void
1621	call_pending (EV_P)	1780	call_pending (EV_P)
1622	{	1781	{
1623	int pri;	1782	int pri;
1624
1625	EV_FREQUENT_CHECK;
1626		1783
1627	for (pri = NUMPRI; pri--; )	1784	for (pri = NUMPRI; pri--; )
1628	while (pendingcnt [pri])	1785	while (pendingcnt [pri])
1629	{	1786	{
1630	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1787	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1631		1788
1632	if (expect_true (p->w))
1633	{
1634	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1789	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1790	/* ^ this is no longer true, as pending_w could be here */
1635		1791
1636	p->w->pending = 0;	1792	p->w->pending = 0;
1637	EV_CB_INVOKE (p->w, p->events);	1793	EV_CB_INVOKE (p->w, p->events);
1638	}	1794	EV_FREQUENT_CHECK;
1639	}	1795	}
1640
1641	EV_FREQUENT_CHECK;
1642	}	1796	}
1643		1797
1644	#if EV_IDLE_ENABLE	1798	#if EV_IDLE_ENABLE
1645	void inline_size	1799	/* make idle watchers pending. this handles the "call-idle */
		1800	/* only when higher priorities are idle" logic */
		1801	inline_size void
1646	idle_reify (EV_P)	1802	idle_reify (EV_P)
1647	{	1803	{
1648	if (expect_false (idleall))	1804	if (expect_false (idleall))
1649	{	1805	{
1650	int pri;	1806	int pri;
…		…
1662	}	1818	}
1663	}	1819	}
1664	}	1820	}
1665	#endif	1821	#endif
1666		1822
1667	void inline_size	1823	/* make timers pending */
		1824	inline_size void
1668	timers_reify (EV_P)	1825	timers_reify (EV_P)
1669	{	1826	{
1670	EV_FREQUENT_CHECK;	1827	EV_FREQUENT_CHECK;
1671		1828
1672	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	1829	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1673	{	1830	{
1674	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	1831	do
1675
1676	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1677
1678	/* first reschedule or stop timer */
1679	if (w->repeat)
1680	{	1832	{
		1833	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1834
		1835	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		1836
		1837	/* first reschedule or stop timer */
		1838	if (w->repeat)
		1839	{
1681	ev_at (w) += w->repeat;	1840	ev_at (w) += w->repeat;
1682	if (ev_at (w) < mn_now)	1841	if (ev_at (w) < mn_now)
1683	ev_at (w) = mn_now;	1842	ev_at (w) = mn_now;
1684		1843
1685	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1844	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1686		1845
1687	ANHE_at_cache (timers [HEAP0]);	1846	ANHE_at_cache (timers [HEAP0]);
1688	downheap (timers, timercnt, HEAP0);	1847	downheap (timers, timercnt, HEAP0);
		1848	}
		1849	else
		1850	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1851
		1852	EV_FREQUENT_CHECK;
		1853	feed_reverse (EV_A_ (W)w);
1689	}	1854	}
1690	else	1855	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1691	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1692		1856
1693	EV_FREQUENT_CHECK;
1694	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1857	feed_reverse_done (EV_A_ EV_TIMEOUT);
1695	}	1858	}
1696	}	1859	}
1697		1860
1698	#if EV_PERIODIC_ENABLE	1861	#if EV_PERIODIC_ENABLE
1699	void inline_size	1862	/* make periodics pending */
		1863	inline_size void
1700	periodics_reify (EV_P)	1864	periodics_reify (EV_P)
1701	{	1865	{
1702	EV_FREQUENT_CHECK;	1866	EV_FREQUENT_CHECK;
		1867
1703	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	1868	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1704	{	1869	{
1705	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	1870	int feed_count = 0;
1706		1871
1707	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	1872	do
1708
1709	/* first reschedule or stop timer */
1710	if (w->reschedule_cb)
1711	{	1873	{
		1874	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1875
		1876	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		1877
		1878	/* first reschedule or stop timer */
		1879	if (w->reschedule_cb)
		1880	{
1712	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1881	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1713		1882
1714	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));	1883	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1715		1884
1716	ANHE_at_cache (periodics [HEAP0]);	1885	ANHE_at_cache (periodics [HEAP0]);
1717	downheap (periodics, periodiccnt, HEAP0);	1886	downheap (periodics, periodiccnt, HEAP0);
		1887	}
		1888	else if (w->interval)
		1889	{
		1890	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1891	/* if next trigger time is not sufficiently in the future, put it there */
		1892	/* this might happen because of floating point inexactness */
		1893	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1894	{
		1895	ev_at (w) += w->interval;
		1896
		1897	/* if interval is unreasonably low we might still have a time in the past */
		1898	/* so correct this. this will make the periodic very inexact, but the user */
		1899	/* has effectively asked to get triggered more often than possible */
		1900	if (ev_at (w) < ev_rt_now)
		1901	ev_at (w) = ev_rt_now;
		1902	}
		1903
		1904	ANHE_at_cache (periodics [HEAP0]);
		1905	downheap (periodics, periodiccnt, HEAP0);
		1906	}
		1907	else
		1908	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1909
1718	EV_FREQUENT_CHECK;	1910	EV_FREQUENT_CHECK;
		1911	feed_reverse (EV_A_ (W)w);
1719	}	1912	}
1720	else if (w->interval)	1913	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1721	{
1722	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1723	/* if next trigger time is not sufficiently in the future, put it there */
1724	/* this might happen because of floating point inexactness */
1725	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1726	{
1727	ev_at (w) += w->interval;
1728		1914
1729	/* if interval is unreasonably low we might still have a time in the past */
1730	/* so correct this. this will make the periodic very inexact, but the user */
1731	/* has effectively asked to get triggered more often than possible */
1732	if (ev_at (w) < ev_rt_now)
1733	ev_at (w) = ev_rt_now;
1734	}
1735
1736	ANHE_at_cache (periodics [HEAP0]);
1737	downheap (periodics, periodiccnt, HEAP0);
1738	}
1739	else
1740	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1741
1742	EV_FREQUENT_CHECK;
1743	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1915	feed_reverse_done (EV_A_ EV_PERIODIC);
1744	}	1916	}
1745	}	1917	}
1746		1918
		1919	/* simply recalculate all periodics */
		1920	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1747	static void noinline	1921	static void noinline
1748	periodics_reschedule (EV_P)	1922	periodics_reschedule (EV_P)
1749	{	1923	{
1750	int i;	1924	int i;
1751		1925
…		…
1764		1938
1765	reheap (periodics, periodiccnt);	1939	reheap (periodics, periodiccnt);
1766	}	1940	}
1767	#endif	1941	#endif
1768		1942
1769	void inline_speed	1943	/* adjust all timers by a given offset */
		1944	static void noinline
		1945	timers_reschedule (EV_P_ ev_tstamp adjust)
		1946	{
		1947	int i;
		1948
		1949	for (i = 0; i < timercnt; ++i)
		1950	{
		1951	ANHE *he = timers + i + HEAP0;
		1952	ANHE_w (*he)->at += adjust;
		1953	ANHE_at_cache (*he);
		1954	}
		1955	}
		1956
		1957	/* fetch new monotonic and realtime times from the kernel */
		1958	/* also detetc if there was a timejump, and act accordingly */
		1959	inline_speed void
1770	time_update (EV_P_ ev_tstamp max_block)	1960	time_update (EV_P_ ev_tstamp max_block)
1771	{	1961	{
1772	int i;
1773
1774	#if EV_USE_MONOTONIC	1962	#if EV_USE_MONOTONIC
1775	if (expect_true (have_monotonic))	1963	if (expect_true (have_monotonic))
1776	{	1964	{
		1965	int i;
1777	ev_tstamp odiff = rtmn_diff;	1966	ev_tstamp odiff = rtmn_diff;
1778		1967
1779	mn_now = get_clock ();	1968	mn_now = get_clock ();
1780		1969
1781	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	1970	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1807	ev_rt_now = ev_time ();	1996	ev_rt_now = ev_time ();
1808	mn_now = get_clock ();	1997	mn_now = get_clock ();
1809	now_floor = mn_now;	1998	now_floor = mn_now;
1810	}	1999	}
1811		2000
		2001	/* no timer adjustment, as the monotonic clock doesn't jump */
		2002	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1812	# if EV_PERIODIC_ENABLE	2003	# if EV_PERIODIC_ENABLE
1813	periodics_reschedule (EV_A);	2004	periodics_reschedule (EV_A);
1814	# endif	2005	# endif
1815	/* no timer adjustment, as the monotonic clock doesn't jump */
1816	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1817	}	2006	}
1818	else	2007	else
1819	#endif	2008	#endif
1820	{	2009	{
1821	ev_rt_now = ev_time ();	2010	ev_rt_now = ev_time ();
1822		2011
1823	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2012	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1824	{	2013	{
		2014	/* adjust timers. this is easy, as the offset is the same for all of them */
		2015	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1825	#if EV_PERIODIC_ENABLE	2016	#if EV_PERIODIC_ENABLE
1826	periodics_reschedule (EV_A);	2017	periodics_reschedule (EV_A);
1827	#endif	2018	#endif
1828	/* adjust timers. this is easy, as the offset is the same for all of them */
1829	for (i = 0; i < timercnt; ++i)
1830	{
1831	ANHE *he = timers + i + HEAP0;
1832	ANHE_w (*he)->at += ev_rt_now - mn_now;
1833	ANHE_at_cache (*he);
1834	}
1835	}	2019	}
1836		2020
1837	mn_now = ev_rt_now;	2021	mn_now = ev_rt_now;
1838	}	2022	}
1839	}	2023	}
1840		2024
1841	void
1842	ev_ref (EV_P)
1843	{
1844	++activecnt;
1845	}
1846
1847	void
1848	ev_unref (EV_P)
1849	{
1850	--activecnt;
1851	}
1852
1853	static int loop_done;	2025	static int loop_done;
1854		2026
1855	void	2027	void
1856	ev_loop (EV_P_ int flags)	2028	ev_loop (EV_P_ int flags)
1857	{	2029	{
…		…
1859		2031
1860	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2032	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1861		2033
1862	do	2034	do
1863	{	2035	{
		2036	#if EV_VERIFY >= 2
		2037	ev_loop_verify (EV_A);
		2038	#endif
		2039
1864	#ifndef _WIN32	2040	#ifndef _WIN32
1865	if (expect_false (curpid)) /* penalise the forking check even more */	2041	if (expect_false (curpid)) /* penalise the forking check even more */
1866	if (expect_false (getpid () != curpid))	2042	if (expect_false (getpid () != curpid))
1867	{	2043	{
1868	curpid = getpid ();	2044	curpid = getpid ();
…		…
1885	{	2061	{
1886	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2062	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1887	call_pending (EV_A);	2063	call_pending (EV_A);
1888	}	2064	}
1889		2065
1890	if (expect_false (!activecnt))
1891	break;
1892
1893	/* we might have forked, so reify kernel state if necessary */	2066	/* we might have forked, so reify kernel state if necessary */
1894	if (expect_false (postfork))	2067	if (expect_false (postfork))
1895	loop_fork (EV_A);	2068	loop_fork (EV_A);
1896		2069
1897	/* update fd-related kernel structures */	2070	/* update fd-related kernel structures */
…		…
1902	ev_tstamp waittime = 0.;	2075	ev_tstamp waittime = 0.;
1903	ev_tstamp sleeptime = 0.;	2076	ev_tstamp sleeptime = 0.;
1904		2077
1905	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2078	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1906	{	2079	{
		2080	/* remember old timestamp for io_blocktime calculation */
		2081	ev_tstamp prev_mn_now = mn_now;
		2082
1907	/* update time to cancel out callback processing overhead */	2083	/* update time to cancel out callback processing overhead */
1908	time_update (EV_A_ 1e100);	2084	time_update (EV_A_ 1e100);
1909		2085
1910	waittime = MAX_BLOCKTIME;	2086	waittime = MAX_BLOCKTIME;
1911		2087
…		…
1921	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2097	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1922	if (waittime > to) waittime = to;	2098	if (waittime > to) waittime = to;
1923	}	2099	}
1924	#endif	2100	#endif
1925		2101
		2102	/* don't let timeouts decrease the waittime below timeout_blocktime */
1926	if (expect_false (waittime < timeout_blocktime))	2103	if (expect_false (waittime < timeout_blocktime))
1927	waittime = timeout_blocktime;	2104	waittime = timeout_blocktime;
1928		2105
1929	sleeptime = waittime - backend_fudge;	2106	/* extra check because io_blocktime is commonly 0 */
1930
1931	if (expect_true (sleeptime > io_blocktime))	2107	if (expect_false (io_blocktime))
1932	sleeptime = io_blocktime;
1933
1934	if (sleeptime)
1935	{	2108	{
		2109	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2110
		2111	if (sleeptime > waittime - backend_fudge)
		2112	sleeptime = waittime - backend_fudge;
		2113
		2114	if (expect_true (sleeptime > 0.))
		2115	{
1936	ev_sleep (sleeptime);	2116	ev_sleep (sleeptime);
1937	waittime -= sleeptime;	2117	waittime -= sleeptime;
		2118	}
1938	}	2119	}
1939	}	2120	}
1940		2121
1941	++loop_count;	2122	++loop_count;
1942	backend_poll (EV_A_ waittime);	2123	backend_poll (EV_A_ waittime);
…		…
1976	ev_unloop (EV_P_ int how)	2157	ev_unloop (EV_P_ int how)
1977	{	2158	{
1978	loop_done = how;	2159	loop_done = how;
1979	}	2160	}
1980		2161
		2162	void
		2163	ev_ref (EV_P)
		2164	{
		2165	++activecnt;
		2166	}
		2167
		2168	void
		2169	ev_unref (EV_P)
		2170	{
		2171	--activecnt;
		2172	}
		2173
		2174	void
		2175	ev_now_update (EV_P)
		2176	{
		2177	time_update (EV_A_ 1e100);
		2178	}
		2179
		2180	void
		2181	ev_suspend (EV_P)
		2182	{
		2183	ev_now_update (EV_A);
		2184	}
		2185
		2186	void
		2187	ev_resume (EV_P)
		2188	{
		2189	ev_tstamp mn_prev = mn_now;
		2190
		2191	ev_now_update (EV_A);
		2192	timers_reschedule (EV_A_ mn_now - mn_prev);
		2193	#if EV_PERIODIC_ENABLE
		2194	/* TODO: really do this? */
		2195	periodics_reschedule (EV_A);
		2196	#endif
		2197	}
		2198
1981	/*****************************************************************************/	2199	/*****************************************************************************/
		2200	/* singly-linked list management, used when the expected list length is short */
1982		2201
1983	void inline_size	2202	inline_size void
1984	wlist_add (WL *head, WL elem)	2203	wlist_add (WL *head, WL elem)
1985	{	2204	{
1986	elem->next = *head;	2205	elem->next = *head;
1987	*head = elem;	2206	*head = elem;
1988	}	2207	}
1989		2208
1990	void inline_size	2209	inline_size void
1991	wlist_del (WL *head, WL elem)	2210	wlist_del (WL *head, WL elem)
1992	{	2211	{
1993	while (*head)	2212	while (*head)
1994	{	2213	{
1995	if (*head == elem)	2214	if (*head == elem)
…		…
2000		2219
2001	head = &(*head)->next;	2220	head = &(*head)->next;
2002	}	2221	}
2003	}	2222	}
2004		2223
2005	void inline_speed	2224	/* internal, faster, version of ev_clear_pending */
		2225	inline_speed void
2006	clear_pending (EV_P_ W w)	2226	clear_pending (EV_P_ W w)
2007	{	2227	{
2008	if (w->pending)	2228	if (w->pending)
2009	{	2229	{
2010	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2230	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2011	w->pending = 0;	2231	w->pending = 0;
2012	}	2232	}
2013	}	2233	}
2014		2234
2015	int	2235	int
…		…
2019	int pending = w_->pending;	2239	int pending = w_->pending;
2020		2240
2021	if (expect_true (pending))	2241	if (expect_true (pending))
2022	{	2242	{
2023	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2243	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2244	p->w = (W)&pending_w;
2024	w_->pending = 0;	2245	w_->pending = 0;
2025	p->w = 0;
2026	return p->events;	2246	return p->events;
2027	}	2247	}
2028	else	2248	else
2029	return 0;	2249	return 0;
2030	}	2250	}
2031		2251
2032	void inline_size	2252	inline_size void
2033	pri_adjust (EV_P_ W w)	2253	pri_adjust (EV_P_ W w)
2034	{	2254	{
2035	int pri = w->priority;	2255	int pri = w->priority;
2036	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2256	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2037	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2257	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2038	w->priority = pri;	2258	w->priority = pri;
2039	}	2259	}
2040		2260
2041	void inline_speed	2261	inline_speed void
2042	ev_start (EV_P_ W w, int active)	2262	ev_start (EV_P_ W w, int active)
2043	{	2263	{
2044	pri_adjust (EV_A_ w);	2264	pri_adjust (EV_A_ w);
2045	w->active = active;	2265	w->active = active;
2046	ev_ref (EV_A);	2266	ev_ref (EV_A);
2047	}	2267	}
2048		2268
2049	void inline_size	2269	inline_size void
2050	ev_stop (EV_P_ W w)	2270	ev_stop (EV_P_ W w)
2051	{	2271	{
2052	ev_unref (EV_A);	2272	ev_unref (EV_A);
2053	w->active = 0;	2273	w->active = 0;
2054	}	2274	}
…		…
2061	int fd = w->fd;	2281	int fd = w->fd;
2062		2282
2063	if (expect_false (ev_is_active (w)))	2283	if (expect_false (ev_is_active (w)))
2064	return;	2284	return;
2065		2285
2066	assert (("ev_io_start called with negative fd", fd >= 0));	2286	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2287	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2067		2288
2068	EV_FREQUENT_CHECK;	2289	EV_FREQUENT_CHECK;
2069		2290
2070	ev_start (EV_A_ (W)w, 1);	2291	ev_start (EV_A_ (W)w, 1);
2071	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2292	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2072	wlist_add (&anfds[fd].head, (WL)w);	2293	wlist_add (&anfds[fd].head, (WL)w);
2073		2294
2074	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2295	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
2075	w->events &= ~EV_IOFDSET;	2296	w->events &= ~EV__IOFDSET;
2076		2297
2077	EV_FREQUENT_CHECK;	2298	EV_FREQUENT_CHECK;
2078	}	2299	}
2079		2300
2080	void noinline	2301	void noinline
…		…
2082	{	2303	{
2083	clear_pending (EV_A_ (W)w);	2304	clear_pending (EV_A_ (W)w);
2084	if (expect_false (!ev_is_active (w)))	2305	if (expect_false (!ev_is_active (w)))
2085	return;	2306	return;
2086		2307
2087	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2308	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2088		2309
2089	EV_FREQUENT_CHECK;	2310	EV_FREQUENT_CHECK;
2090		2311
2091	wlist_del (&anfds[w->fd].head, (WL)w);	2312	wlist_del (&anfds[w->fd].head, (WL)w);
2092	ev_stop (EV_A_ (W)w);	2313	ev_stop (EV_A_ (W)w);
…		…
2102	if (expect_false (ev_is_active (w)))	2323	if (expect_false (ev_is_active (w)))
2103	return;	2324	return;
2104		2325
2105	ev_at (w) += mn_now;	2326	ev_at (w) += mn_now;
2106		2327
2107	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2328	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2108		2329
2109	EV_FREQUENT_CHECK;	2330	EV_FREQUENT_CHECK;
2110		2331
2111	++timercnt;	2332	++timercnt;
2112	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);	2333	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
…		…
2115	ANHE_at_cache (timers [ev_active (w)]);	2336	ANHE_at_cache (timers [ev_active (w)]);
2116	upheap (timers, ev_active (w));	2337	upheap (timers, ev_active (w));
2117		2338
2118	EV_FREQUENT_CHECK;	2339	EV_FREQUENT_CHECK;
2119		2340
2120	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2341	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2121	}	2342	}
2122		2343
2123	void noinline	2344	void noinline
2124	ev_timer_stop (EV_P_ ev_timer *w)	2345	ev_timer_stop (EV_P_ ev_timer *w)
2125	{	2346	{
…		…
2130	EV_FREQUENT_CHECK;	2351	EV_FREQUENT_CHECK;
2131		2352
2132	{	2353	{
2133	int active = ev_active (w);	2354	int active = ev_active (w);
2134		2355
2135	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2356	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2136		2357
2137	--timercnt;	2358	--timercnt;
2138		2359
2139	if (expect_true (active < timercnt + HEAP0))	2360	if (expect_true (active < timercnt + HEAP0))
2140	{	2361	{
…		…
2184		2405
2185	if (w->reschedule_cb)	2406	if (w->reschedule_cb)
2186	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2407	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2187	else if (w->interval)	2408	else if (w->interval)
2188	{	2409	{
2189	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2410	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2190	/* this formula differs from the one in periodic_reify because we do not always round up */	2411	/* this formula differs from the one in periodic_reify because we do not always round up */
2191	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2412	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2192	}	2413	}
2193	else	2414	else
2194	ev_at (w) = w->offset;	2415	ev_at (w) = w->offset;
…		…
2202	ANHE_at_cache (periodics [ev_active (w)]);	2423	ANHE_at_cache (periodics [ev_active (w)]);
2203	upheap (periodics, ev_active (w));	2424	upheap (periodics, ev_active (w));
2204		2425
2205	EV_FREQUENT_CHECK;	2426	EV_FREQUENT_CHECK;
2206		2427
2207	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2428	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2208	}	2429	}
2209		2430
2210	void noinline	2431	void noinline
2211	ev_periodic_stop (EV_P_ ev_periodic *w)	2432	ev_periodic_stop (EV_P_ ev_periodic *w)
2212	{	2433	{
…		…
2217	EV_FREQUENT_CHECK;	2438	EV_FREQUENT_CHECK;
2218		2439
2219	{	2440	{
2220	int active = ev_active (w);	2441	int active = ev_active (w);
2221		2442
2222	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2443	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2223		2444
2224	--periodiccnt;	2445	--periodiccnt;
2225		2446
2226	if (expect_true (active < periodiccnt + HEAP0))	2447	if (expect_true (active < periodiccnt + HEAP0))
2227	{	2448	{
…		…
2250		2471
2251	void noinline	2472	void noinline
2252	ev_signal_start (EV_P_ ev_signal *w)	2473	ev_signal_start (EV_P_ ev_signal *w)
2253	{	2474	{
2254	#if EV_MULTIPLICITY	2475	#if EV_MULTIPLICITY
2255	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2476	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2256	#endif	2477	#endif
2257	if (expect_false (ev_is_active (w)))	2478	if (expect_false (ev_is_active (w)))
2258	return;	2479	return;
2259		2480
2260	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2481	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2261		2482
2262	evpipe_init (EV_A);	2483	evpipe_init (EV_A);
2263		2484
2264	EV_FREQUENT_CHECK;	2485	EV_FREQUENT_CHECK;
2265		2486
…		…
2268	sigset_t full, prev;	2489	sigset_t full, prev;
2269	sigfillset (&full);	2490	sigfillset (&full);
2270	sigprocmask (SIG_SETMASK, &full, &prev);	2491	sigprocmask (SIG_SETMASK, &full, &prev);
2271	#endif	2492	#endif
2272		2493
2273	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2494	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2274		2495
2275	#ifndef _WIN32	2496	#ifndef _WIN32
2276	sigprocmask (SIG_SETMASK, &prev, 0);	2497	sigprocmask (SIG_SETMASK, &prev, 0);
2277	#endif	2498	#endif
2278	}	2499	}
…		…
2316		2537
2317	void	2538	void
2318	ev_child_start (EV_P_ ev_child *w)	2539	ev_child_start (EV_P_ ev_child *w)
2319	{	2540	{
2320	#if EV_MULTIPLICITY	2541	#if EV_MULTIPLICITY
2321	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2542	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2322	#endif	2543	#endif
2323	if (expect_false (ev_is_active (w)))	2544	if (expect_false (ev_is_active (w)))
2324	return;	2545	return;
2325		2546
2326	EV_FREQUENT_CHECK;	2547	EV_FREQUENT_CHECK;
…		…
2351	# ifdef _WIN32	2572	# ifdef _WIN32
2352	# undef lstat	2573	# undef lstat
2353	# define lstat(a,b) _stati64 (a,b)	2574	# define lstat(a,b) _stati64 (a,b)
2354	# endif	2575	# endif
2355		2576
2356	#define DEF_STAT_INTERVAL 5.0074891	2577	#define DEF_STAT_INTERVAL 5.0074891
		2578	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2357	#define MIN_STAT_INTERVAL 0.1074891	2579	#define MIN_STAT_INTERVAL 0.1074891
2358		2580
2359	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2581	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2360		2582
2361	#if EV_USE_INOTIFY	2583	#if EV_USE_INOTIFY
2362	# define EV_INOTIFY_BUFSIZE 8192	2584	# define EV_INOTIFY_BUFSIZE 8192
…		…
2366	{	2588	{
2367	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);	2589	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);
2368		2590
2369	if (w->wd < 0)	2591	if (w->wd < 0)
2370	{	2592	{
		2593	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2371	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2594	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2372		2595
2373	/* monitor some parent directory for speedup hints */	2596	/* monitor some parent directory for speedup hints */
2374	/* note that exceeding the hardcoded limit is not a correctness issue, */	2597	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2375	/* but an efficiency issue only */	2598	/* but an efficiency issue only */
2376	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2599	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2377	{	2600	{
2378	char path [4096];	2601	char path [4096];
2379	strcpy (path, w->path);	2602	strcpy (path, w->path);
…		…
2383	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2606	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2384	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2607	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2385		2608
2386	char *pend = strrchr (path, '/');	2609	char *pend = strrchr (path, '/');
2387		2610
2388	if (!pend)	2611	if (!pend || pend == path)
2389	break; /* whoops, no '/', complain to your admin */	2612	break;
2390		2613
2391	*pend = 0;	2614	*pend = 0;
2392	w->wd = inotify_add_watch (fs_fd, path, mask);	2615	w->wd = inotify_add_watch (fs_fd, path, mask);
2393	}	2616	}
2394	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2617	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2395	}	2618	}
2396	}	2619	}
2397	else
2398	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2399		2620
2400	if (w->wd >= 0)	2621	if (w->wd >= 0)
		2622	{
2401	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2623	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2624
		2625	/* now local changes will be tracked by inotify, but remote changes won't */
		2626	/* unless the filesystem it known to be local, we therefore still poll */
		2627	/* also do poll on <2.6.25, but with normal frequency */
		2628	struct statfs sfs;
		2629
		2630	if (fs_2625 && !statfs (w->path, &sfs))
		2631	if (sfs.f_type == 0x1373 /* devfs */
		2632	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2633	|| sfs.f_type == 0x3153464a /* jfs */
		2634	|| sfs.f_type == 0x52654973 /* reiser3 */
		2635	|| sfs.f_type == 0x01021994 /* tempfs */
		2636	|| sfs.f_type == 0x58465342 /* xfs */)
		2637	return;
		2638
		2639	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2640	ev_timer_again (EV_A_ &w->timer);
		2641	}
2402	}	2642	}
2403		2643
2404	static void noinline	2644	static void noinline
2405	infy_del (EV_P_ ev_stat *w)	2645	infy_del (EV_P_ ev_stat *w)
2406	{	2646	{
…		…
2420		2660
2421	static void noinline	2661	static void noinline
2422	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2662	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2423	{	2663	{
2424	if (slot < 0)	2664	if (slot < 0)
2425	/* overflow, need to check for all hahs slots */	2665	/* overflow, need to check for all hash slots */
2426	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2666	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2427	infy_wd (EV_A_ slot, wd, ev);	2667	infy_wd (EV_A_ slot, wd, ev);
2428	else	2668	else
2429	{	2669	{
2430	WL w_;	2670	WL w_;
…		…
2436		2676
2437	if (w->wd == wd || wd == -1)	2677	if (w->wd == wd || wd == -1)
2438	{	2678	{
2439	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2679	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2440	{	2680	{
		2681	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2441	w->wd = -1;	2682	w->wd = -1;
2442	infy_add (EV_A_ w); /* re-add, no matter what */	2683	infy_add (EV_A_ w); /* re-add, no matter what */
2443	}	2684	}
2444		2685
2445	stat_timer_cb (EV_A_ &w->timer, 0);	2686	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2458		2699
2459	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2700	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2460	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2701	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2461	}	2702	}
2462		2703
2463	void inline_size	2704	inline_size void
		2705	check_2625 (EV_P)
		2706	{
		2707	/* kernels < 2.6.25 are borked
		2708	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2709	*/
		2710	struct utsname buf;
		2711	int major, minor, micro;
		2712
		2713	if (uname (&buf))
		2714	return;
		2715
		2716	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2717	return;
		2718
		2719	if (major < 2
		2720	|| (major == 2 && minor < 6)
		2721	|| (major == 2 && minor == 6 && micro < 25))
		2722	return;
		2723
		2724	fs_2625 = 1;
		2725	}
		2726
		2727	inline_size void
2464	infy_init (EV_P)	2728	infy_init (EV_P)
2465	{	2729	{
2466	if (fs_fd != -2)	2730	if (fs_fd != -2)
2467	return;	2731	return;
		2732
		2733	fs_fd = -1;
		2734
		2735	check_2625 (EV_A);
2468		2736
2469	fs_fd = inotify_init ();	2737	fs_fd = inotify_init ();
2470		2738
2471	if (fs_fd >= 0)	2739	if (fs_fd >= 0)
2472	{	2740	{
…		…
2474	ev_set_priority (&fs_w, EV_MAXPRI);	2742	ev_set_priority (&fs_w, EV_MAXPRI);
2475	ev_io_start (EV_A_ &fs_w);	2743	ev_io_start (EV_A_ &fs_w);
2476	}	2744	}
2477	}	2745	}
2478		2746
2479	void inline_size	2747	inline_size void
2480	infy_fork (EV_P)	2748	infy_fork (EV_P)
2481	{	2749	{
2482	int slot;	2750	int slot;
2483		2751
2484	if (fs_fd < 0)	2752	if (fs_fd < 0)
…		…
2500	w->wd = -1;	2768	w->wd = -1;
2501		2769
2502	if (fs_fd >= 0)	2770	if (fs_fd >= 0)
2503	infy_add (EV_A_ w); /* re-add, no matter what */	2771	infy_add (EV_A_ w); /* re-add, no matter what */
2504	else	2772	else
2505	ev_timer_start (EV_A_ &w->timer);	2773	ev_timer_again (EV_A_ &w->timer);
2506	}	2774	}
2507
2508	}	2775	}
2509	}	2776	}
2510		2777
		2778	#endif
		2779
		2780	#ifdef _WIN32
		2781	# define EV_LSTAT(p,b) _stati64 (p, b)
		2782	#else
		2783	# define EV_LSTAT(p,b) lstat (p, b)
2511	#endif	2784	#endif
2512		2785
2513	void	2786	void
2514	ev_stat_stat (EV_P_ ev_stat *w)	2787	ev_stat_stat (EV_P_ ev_stat *w)
2515	{	2788	{
…		…
2542	|| w->prev.st_atime != w->attr.st_atime	2815	|| w->prev.st_atime != w->attr.st_atime
2543	|| w->prev.st_mtime != w->attr.st_mtime	2816	|| w->prev.st_mtime != w->attr.st_mtime
2544	|| w->prev.st_ctime != w->attr.st_ctime	2817	|| w->prev.st_ctime != w->attr.st_ctime
2545	) {	2818	) {
2546	#if EV_USE_INOTIFY	2819	#if EV_USE_INOTIFY
		2820	if (fs_fd >= 0)
		2821	{
2547	infy_del (EV_A_ w);	2822	infy_del (EV_A_ w);
2548	infy_add (EV_A_ w);	2823	infy_add (EV_A_ w);
2549	ev_stat_stat (EV_A_ w); /* avoid race... */	2824	ev_stat_stat (EV_A_ w); /* avoid race... */
		2825	}
2550	#endif	2826	#endif
2551		2827
2552	ev_feed_event (EV_A_ w, EV_STAT);	2828	ev_feed_event (EV_A_ w, EV_STAT);
2553	}	2829	}
2554	}	2830	}
…		…
2557	ev_stat_start (EV_P_ ev_stat *w)	2833	ev_stat_start (EV_P_ ev_stat *w)
2558	{	2834	{
2559	if (expect_false (ev_is_active (w)))	2835	if (expect_false (ev_is_active (w)))
2560	return;	2836	return;
2561		2837
2562	/* since we use memcmp, we need to clear any padding data etc. */
2563	memset (&w->prev, 0, sizeof (ev_statdata));
2564	memset (&w->attr, 0, sizeof (ev_statdata));
2565
2566	ev_stat_stat (EV_A_ w);	2838	ev_stat_stat (EV_A_ w);
2567		2839
		2840	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2568	if (w->interval < MIN_STAT_INTERVAL)	2841	w->interval = MIN_STAT_INTERVAL;
2569	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2570		2842
2571	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2843	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2572	ev_set_priority (&w->timer, ev_priority (w));	2844	ev_set_priority (&w->timer, ev_priority (w));
2573		2845
2574	#if EV_USE_INOTIFY	2846	#if EV_USE_INOTIFY
2575	infy_init (EV_A);	2847	infy_init (EV_A);
2576		2848
2577	if (fs_fd >= 0)	2849	if (fs_fd >= 0)
2578	infy_add (EV_A_ w);	2850	infy_add (EV_A_ w);
2579	else	2851	else
2580	#endif	2852	#endif
2581	ev_timer_start (EV_A_ &w->timer);	2853	ev_timer_again (EV_A_ &w->timer);
2582		2854
2583	ev_start (EV_A_ (W)w, 1);	2855	ev_start (EV_A_ (W)w, 1);
2584		2856
2585	EV_FREQUENT_CHECK;	2857	EV_FREQUENT_CHECK;
2586	}	2858	}
…		…
2756	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3028	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2757	}	3029	}
2758	}	3030	}
2759	}	3031	}
2760		3032
		3033	static void
		3034	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3035	{
		3036	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3037
		3038	ev_embed_stop (EV_A_ w);
		3039
		3040	{
		3041	struct ev_loop *loop = w->other;
		3042
		3043	ev_loop_fork (EV_A);
		3044	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3045	}
		3046
		3047	ev_embed_start (EV_A_ w);
		3048	}
		3049
2761	#if 0	3050	#if 0
2762	static void	3051	static void
2763	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3052	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2764	{	3053	{
2765	ev_idle_stop (EV_A_ idle);	3054	ev_idle_stop (EV_A_ idle);
…		…
2772	if (expect_false (ev_is_active (w)))	3061	if (expect_false (ev_is_active (w)))
2773	return;	3062	return;
2774		3063
2775	{	3064	{
2776	struct ev_loop *loop = w->other;	3065	struct ev_loop *loop = w->other;
2777	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3066	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2778	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3067	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2779	}	3068	}
2780		3069
2781	EV_FREQUENT_CHECK;	3070	EV_FREQUENT_CHECK;
2782		3071
…		…
2785		3074
2786	ev_prepare_init (&w->prepare, embed_prepare_cb);	3075	ev_prepare_init (&w->prepare, embed_prepare_cb);
2787	ev_set_priority (&w->prepare, EV_MINPRI);	3076	ev_set_priority (&w->prepare, EV_MINPRI);
2788	ev_prepare_start (EV_A_ &w->prepare);	3077	ev_prepare_start (EV_A_ &w->prepare);
2789		3078
		3079	ev_fork_init (&w->fork, embed_fork_cb);
		3080	ev_fork_start (EV_A_ &w->fork);
		3081
2790	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3082	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2791		3083
2792	ev_start (EV_A_ (W)w, 1);	3084	ev_start (EV_A_ (W)w, 1);
2793		3085
2794	EV_FREQUENT_CHECK;	3086	EV_FREQUENT_CHECK;
…		…
2801	if (expect_false (!ev_is_active (w)))	3093	if (expect_false (!ev_is_active (w)))
2802	return;	3094	return;
2803		3095
2804	EV_FREQUENT_CHECK;	3096	EV_FREQUENT_CHECK;
2805		3097
2806	ev_io_stop (EV_A_ &w->io);	3098	ev_io_stop (EV_A_ &w->io);
2807	ev_prepare_stop (EV_A_ &w->prepare);	3099	ev_prepare_stop (EV_A_ &w->prepare);
2808		3100	ev_fork_stop (EV_A_ &w->fork);
2809	ev_stop (EV_A_ (W)w);
2810		3101
2811	EV_FREQUENT_CHECK;	3102	EV_FREQUENT_CHECK;
2812	}	3103	}
2813	#endif	3104	#endif
2814		3105
…		…
2911	once_cb (EV_P_ struct ev_once *once, int revents)	3202	once_cb (EV_P_ struct ev_once *once, int revents)
2912	{	3203	{
2913	void (*cb)(int revents, void *arg) = once->cb;	3204	void (*cb)(int revents, void *arg) = once->cb;
2914	void *arg = once->arg;	3205	void *arg = once->arg;
2915		3206
2916	ev_io_stop (EV_A_ &once->io);	3207	ev_io_stop (EV_A_ &once->io);
2917	ev_timer_stop (EV_A_ &once->to);	3208	ev_timer_stop (EV_A_ &once->to);
2918	ev_free (once);	3209	ev_free (once);
2919		3210
2920	cb (revents, arg);	3211	cb (revents, arg);
2921	}	3212	}
2922		3213
2923	static void	3214	static void
2924	once_cb_io (EV_P_ ev_io *w, int revents)	3215	once_cb_io (EV_P_ ev_io *w, int revents)
2925	{	3216	{
2926	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3217	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3218
		3219	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2927	}	3220	}
2928		3221
2929	static void	3222	static void
2930	once_cb_to (EV_P_ ev_timer *w, int revents)	3223	once_cb_to (EV_P_ ev_timer *w, int revents)
2931	{	3224	{
2932	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3225	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3226
		3227	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2933	}	3228	}
2934		3229
2935	void	3230	void
2936	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3231	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2937	{	3232	{
…		…
2959	ev_timer_set (&once->to, timeout, 0.);	3254	ev_timer_set (&once->to, timeout, 0.);
2960	ev_timer_start (EV_A_ &once->to);	3255	ev_timer_start (EV_A_ &once->to);
2961	}	3256	}
2962	}	3257	}
2963		3258
		3259	/*****************************************************************************/
		3260
		3261	#if EV_WALK_ENABLE
		3262	void
		3263	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3264	{
		3265	int i, j;
		3266	ev_watcher_list *wl, *wn;
		3267
		3268	if (types & (EV_IO | EV_EMBED))
		3269	for (i = 0; i < anfdmax; ++i)
		3270	for (wl = anfds [i].head; wl; )
		3271	{
		3272	wn = wl->next;
		3273
		3274	#if EV_EMBED_ENABLE
		3275	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3276	{
		3277	if (types & EV_EMBED)
		3278	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3279	}
		3280	else
		3281	#endif
		3282	#if EV_USE_INOTIFY
		3283	if (ev_cb ((ev_io *)wl) == infy_cb)
		3284	;
		3285	else
		3286	#endif
		3287	if ((ev_io *)wl != &pipe_w)
		3288	if (types & EV_IO)
		3289	cb (EV_A_ EV_IO, wl);
		3290
		3291	wl = wn;
		3292	}
		3293
		3294	if (types & (EV_TIMER | EV_STAT))
		3295	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3296	#if EV_STAT_ENABLE
		3297	/*TODO: timer is not always active*/
		3298	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3299	{
		3300	if (types & EV_STAT)
		3301	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3302	}
		3303	else
		3304	#endif
		3305	if (types & EV_TIMER)
		3306	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3307
		3308	#if EV_PERIODIC_ENABLE
		3309	if (types & EV_PERIODIC)
		3310	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3311	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3312	#endif
		3313
		3314	#if EV_IDLE_ENABLE
		3315	if (types & EV_IDLE)
		3316	for (j = NUMPRI; i--; )
		3317	for (i = idlecnt [j]; i--; )
		3318	cb (EV_A_ EV_IDLE, idles [j][i]);
		3319	#endif
		3320
		3321	#if EV_FORK_ENABLE
		3322	if (types & EV_FORK)
		3323	for (i = forkcnt; i--; )
		3324	if (ev_cb (forks [i]) != embed_fork_cb)
		3325	cb (EV_A_ EV_FORK, forks [i]);
		3326	#endif
		3327
		3328	#if EV_ASYNC_ENABLE
		3329	if (types & EV_ASYNC)
		3330	for (i = asynccnt; i--; )
		3331	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3332	#endif
		3333
		3334	if (types & EV_PREPARE)
		3335	for (i = preparecnt; i--; )
		3336	#if EV_EMBED_ENABLE
		3337	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3338	#endif
		3339	cb (EV_A_ EV_PREPARE, prepares [i]);
		3340
		3341	if (types & EV_CHECK)
		3342	for (i = checkcnt; i--; )
		3343	cb (EV_A_ EV_CHECK, checks [i]);
		3344
		3345	if (types & EV_SIGNAL)
		3346	for (i = 0; i < signalmax; ++i)
		3347	for (wl = signals [i].head; wl; )
		3348	{
		3349	wn = wl->next;
		3350	cb (EV_A_ EV_SIGNAL, wl);
		3351	wl = wn;
		3352	}
		3353
		3354	if (types & EV_CHILD)
		3355	for (i = EV_PID_HASHSIZE; i--; )
		3356	for (wl = childs [i]; wl; )
		3357	{
		3358	wn = wl->next;
		3359	cb (EV_A_ EV_CHILD, wl);
		3360	wl = wn;
		3361	}
		3362	/* EV_STAT 0x00001000 /* stat data changed */
		3363	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3364	}
		3365	#endif
		3366
2964	#if EV_MULTIPLICITY	3367	#if EV_MULTIPLICITY
2965	#include "ev_wrap.h"	3368	#include "ev_wrap.h"
2966	#endif	3369	#endif
2967		3370
2968	#ifdef __cplusplus	3371	#ifdef __cplusplus

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