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Comparing libev/ev.c (file contents):
Revision 1.267 by root, Mon Oct 27 11:08:29 2008 UTC vs.
Revision 1.306 by root, Sun Jul 19 06:35:25 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
…		…
119	# else	133	# else
120	# define EV_USE_INOTIFY 0	134	# define EV_USE_INOTIFY 0
121	# endif	135	# endif
122	# endif	136	# endif
123		137
		138	# ifndef EV_USE_SIGNALFD
		139	# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
		140	# define EV_USE_SIGNALFD 1
		141	# else
		142	# define EV_USE_SIGNALFD 0
		143	# endif
		144	# endif
		145
124	# ifndef EV_USE_EVENTFD	146	# ifndef EV_USE_EVENTFD
125	# if HAVE_EVENTFD	147	# if HAVE_EVENTFD
126	# define EV_USE_EVENTFD 1	148	# define EV_USE_EVENTFD 1
127	# else	149	# else
128	# define EV_USE_EVENTFD 0	150	# define EV_USE_EVENTFD 0
…		…
164	# endif	186	# endif
165	#endif	187	#endif
166		188
167	/* this block tries to deduce configuration from header-defined symbols and defaults */	189	/* this block tries to deduce configuration from header-defined symbols and defaults */
168		190
		191	/* try to deduce the maximum number of signals on this platform */
		192	/* one some platforms, NSIG is one too large. we do not bother */
		193	#if defined (EV_NSIG)
		194	/* use what's provided */
		195	#elif defined (NSIG)
		196	# define EV_NSIG (NSIG)
		197	#elif defined(_NSIG)
		198	# define EV_NSIG (_NSIG)
		199	#elif defined (SIGMAX)
		200	# define EV_NSIG (SIGMAX+1)
		201	#elif defined (SIG_MAX)
		202	# define EV_NSIG (SIG_MAX+1)
		203	#elif defined (_SIG_MAX)
		204	# define EV_NSIG (_SIG_MAX+1)
		205	#elif defined (MAXSIG)
		206	# define EV_NSIG (MAXSIG+1)
		207	#elif defined (MAX_SIG)
		208	# define EV_NSIG (MAX_SIG+1)
		209	#elif defined (SIGARRAYSIZE)
		210	# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
		211	#elif defined (_sys_nsig)
		212	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
		213	#else
		214	# error "unable to find value for NSIG, please report"
		215	/* to make it compile regardless, just remove the above line */
		216	# define EV_NSIG 65
		217	#endif
		218
		219	#ifndef EV_USE_CLOCK_SYSCALL
		220	# if __linux && __GLIBC__ >= 2
		221	# define EV_USE_CLOCK_SYSCALL 1
		222	# else
		223	# define EV_USE_CLOCK_SYSCALL 0
		224	# endif
		225	#endif
		226
169	#ifndef EV_USE_MONOTONIC	227	#ifndef EV_USE_MONOTONIC
170	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0	228	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
171	# define EV_USE_MONOTONIC 1	229	# define EV_USE_MONOTONIC 1
172	# else	230	# else
173	# define EV_USE_MONOTONIC 0	231	# define EV_USE_MONOTONIC 0
174	# endif	232	# endif
175	#endif	233	#endif
176		234
177	#ifndef EV_USE_REALTIME	235	#ifndef EV_USE_REALTIME
178	# define EV_USE_REALTIME 0	236	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
179	#endif	237	#endif
180		238
181	#ifndef EV_USE_NANOSLEEP	239	#ifndef EV_USE_NANOSLEEP
182	# if _POSIX_C_SOURCE >= 199309L	240	# if _POSIX_C_SOURCE >= 199309L
183	# define EV_USE_NANOSLEEP 1	241	# define EV_USE_NANOSLEEP 1
…		…
244	# else	302	# else
245	# define EV_USE_EVENTFD 0	303	# define EV_USE_EVENTFD 0
246	# endif	304	# endif
247	#endif	305	#endif
248		306
		307	#ifndef EV_USE_SIGNALFD
		308	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9))
		309	# define EV_USE_SIGNALFD 1
		310	# else
		311	# define EV_USE_SIGNALFD 0
		312	# endif
		313	#endif
		314
249	#if 0 /* debugging */	315	#if 0 /* debugging */
250	# define EV_VERIFY 3	316	# define EV_VERIFY 3
251	# define EV_USE_4HEAP 1	317	# define EV_USE_4HEAP 1
252	# define EV_HEAP_CACHE_AT 1	318	# define EV_HEAP_CACHE_AT 1
253	#endif	319	#endif
…		…
262		328
263	#ifndef EV_HEAP_CACHE_AT	329	#ifndef EV_HEAP_CACHE_AT
264	# define EV_HEAP_CACHE_AT !EV_MINIMAL	330	# define EV_HEAP_CACHE_AT !EV_MINIMAL
265	#endif	331	#endif
266		332
		333	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		334	/* which makes programs even slower. might work on other unices, too. */
		335	#if EV_USE_CLOCK_SYSCALL
		336	# include <syscall.h>
		337	# ifdef SYS_clock_gettime
		338	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		339	# undef EV_USE_MONOTONIC
		340	# define EV_USE_MONOTONIC 1
		341	# else
		342	# undef EV_USE_CLOCK_SYSCALL
		343	# define EV_USE_CLOCK_SYSCALL 0
		344	# endif
		345	#endif
		346
267	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	347	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
268		348
269	#ifndef CLOCK_MONOTONIC	349	#ifndef CLOCK_MONOTONIC
270	# undef EV_USE_MONOTONIC	350	# undef EV_USE_MONOTONIC
271	# define EV_USE_MONOTONIC 0	351	# define EV_USE_MONOTONIC 0
…		…
287	# endif	367	# endif
288	#endif	368	#endif
289		369
290	#if EV_USE_INOTIFY	370	#if EV_USE_INOTIFY
291	# include <sys/utsname.h>	371	# include <sys/utsname.h>
		372	# include <sys/statfs.h>
292	# include <sys/inotify.h>	373	# include <sys/inotify.h>
293	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */	374	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
294	# ifndef IN_DONT_FOLLOW	375	# ifndef IN_DONT_FOLLOW
295	# undef EV_USE_INOTIFY	376	# undef EV_USE_INOTIFY
296	# define EV_USE_INOTIFY 0	377	# define EV_USE_INOTIFY 0
…		…
302	#endif	383	#endif
303		384
304	#if EV_USE_EVENTFD	385	#if EV_USE_EVENTFD
305	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	386	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
306	# include <stdint.h>	387	# include <stdint.h>
		388	# ifndef EFD_NONBLOCK
		389	# define EFD_NONBLOCK O_NONBLOCK
		390	# endif
		391	# ifndef EFD_CLOEXEC
		392	# define EFD_CLOEXEC O_CLOEXEC
		393	# endif
307	# ifdef __cplusplus	394	# ifdef __cplusplus
308	extern "C" {	395	extern "C" {
309	# endif	396	# endif
310	int eventfd (unsigned int initval, int flags);	397	int eventfd (unsigned int initval, int flags);
311	# ifdef __cplusplus	398	# ifdef __cplusplus
312	}	399	}
313	# endif	400	# endif
		401	#endif
		402
		403	#if EV_USE_SIGNALFD
		404	# include <sys/signalfd.h>
314	#endif	405	#endif
315		406
316	/**/	407	/**/
317		408
318	#if EV_VERIFY >= 3	409	#if EV_VERIFY >= 3
…		…
354	# define inline_speed static noinline	445	# define inline_speed static noinline
355	#else	446	#else
356	# define inline_speed static inline	447	# define inline_speed static inline
357	#endif	448	#endif
358		449
359	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	450	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		451
		452	#if EV_MINPRI == EV_MAXPRI
		453	# define ABSPRI(w) (((W)w), 0)
		454	#else
360	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	455	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		456	#endif
361		457
362	#define EMPTY /* required for microsofts broken pseudo-c compiler */	458	#define EMPTY /* required for microsofts broken pseudo-c compiler */
363	#define EMPTY2(a,b) /* used to suppress some warnings */	459	#define EMPTY2(a,b) /* used to suppress some warnings */
364		460
365	typedef ev_watcher *W;	461	typedef ev_watcher *W;
…		…
367	typedef ev_watcher_time *WT;	463	typedef ev_watcher_time *WT;
368		464
369	#define ev_active(w) ((W)(w))->active	465	#define ev_active(w) ((W)(w))->active
370	#define ev_at(w) ((WT)(w))->at	466	#define ev_at(w) ((WT)(w))->at
371		467
372	#if EV_USE_MONOTONIC	468	#if EV_USE_REALTIME
373	/* sig_atomic_t is used to avoid per-thread variables or locking but still */	469	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
374	/* giving it a reasonably high chance of working on typical architetcures */	470	/* giving it a reasonably high chance of working on typical architetcures */
		471	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		472	#endif
		473
		474	#if EV_USE_MONOTONIC
375	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	475	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
376	#endif	476	#endif
377		477
378	#ifdef _WIN32	478	#ifdef _WIN32
379	# include "ev_win32.c"	479	# include "ev_win32.c"
…		…
388	{	488	{
389	syserr_cb = cb;	489	syserr_cb = cb;
390	}	490	}
391		491
392	static void noinline	492	static void noinline
393	syserr (const char *msg)	493	ev_syserr (const char *msg)
394	{	494	{
395	if (!msg)	495	if (!msg)
396	msg = "(libev) system error";	496	msg = "(libev) system error";
397		497
398	if (syserr_cb)	498	if (syserr_cb)
…		…
444	#define ev_malloc(size) ev_realloc (0, (size))	544	#define ev_malloc(size) ev_realloc (0, (size))
445	#define ev_free(ptr) ev_realloc ((ptr), 0)	545	#define ev_free(ptr) ev_realloc ((ptr), 0)
446		546
447	/*****************************************************************************/	547	/*****************************************************************************/
448		548
		549	/* set in reify when reification needed */
		550	#define EV_ANFD_REIFY 1
		551
		552	/* file descriptor info structure */
449	typedef struct	553	typedef struct
450	{	554	{
451	WL head;	555	WL head;
452	unsigned char events;	556	unsigned char events; /* the events watched for */
453	unsigned char reify;	557	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
454	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */	558	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
		559	unsigned char unused;
		560	#if EV_USE_EPOLL
455	unsigned char egen; /* generation counter to counter epoll bugs */	561	unsigned int egen; /* generation counter to counter epoll bugs */
		562	#endif
456	#if EV_SELECT_IS_WINSOCKET	563	#if EV_SELECT_IS_WINSOCKET
457	SOCKET handle;	564	SOCKET handle;
458	#endif	565	#endif
459	} ANFD;	566	} ANFD;
460		567
		568	/* stores the pending event set for a given watcher */
461	typedef struct	569	typedef struct
462	{	570	{
463	W w;	571	W w;
464	int events;	572	int events; /* the pending event set for the given watcher */
465	} ANPENDING;	573	} ANPENDING;
466		574
467	#if EV_USE_INOTIFY	575	#if EV_USE_INOTIFY
468	/* hash table entry per inotify-id */	576	/* hash table entry per inotify-id */
469	typedef struct	577	typedef struct
…		…
472	} ANFS;	580	} ANFS;
473	#endif	581	#endif
474		582
475	/* Heap Entry */	583	/* Heap Entry */
476	#if EV_HEAP_CACHE_AT	584	#if EV_HEAP_CACHE_AT
		585	/* a heap element */
477	typedef struct {	586	typedef struct {
478	ev_tstamp at;	587	ev_tstamp at;
479	WT w;	588	WT w;
480	} ANHE;	589	} ANHE;
481		590
482	#define ANHE_w(he) (he).w /* access watcher, read-write */	591	#define ANHE_w(he) (he).w /* access watcher, read-write */
483	#define ANHE_at(he) (he).at /* access cached at, read-only */	592	#define ANHE_at(he) (he).at /* access cached at, read-only */
484	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */	593	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
485	#else	594	#else
		595	/* a heap element */
486	typedef WT ANHE;	596	typedef WT ANHE;
487		597
488	#define ANHE_w(he) (he)	598	#define ANHE_w(he) (he)
489	#define ANHE_at(he) (he)->at	599	#define ANHE_at(he) (he)->at
490	#define ANHE_at_cache(he)	600	#define ANHE_at_cache(he)
…		…
514		624
515	static int ev_default_loop_ptr;	625	static int ev_default_loop_ptr;
516		626
517	#endif	627	#endif
518		628
		629	#if EV_MINIMAL < 2
		630	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		631	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		632	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		633	#else
		634	# define EV_RELEASE_CB (void)0
		635	# define EV_ACQUIRE_CB (void)0
		636	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		637	#endif
		638
		639	#define EVUNLOOP_RECURSE 0x80
		640
519	/*****************************************************************************/	641	/*****************************************************************************/
520		642
		643	#ifndef EV_HAVE_EV_TIME
521	ev_tstamp	644	ev_tstamp
522	ev_time (void)	645	ev_time (void)
523	{	646	{
524	#if EV_USE_REALTIME	647	#if EV_USE_REALTIME
		648	if (expect_true (have_realtime))
		649	{
525	struct timespec ts;	650	struct timespec ts;
526	clock_gettime (CLOCK_REALTIME, &ts);	651	clock_gettime (CLOCK_REALTIME, &ts);
527	return ts.tv_sec + ts.tv_nsec * 1e-9;	652	return ts.tv_sec + ts.tv_nsec * 1e-9;
528	#else	653	}
		654	#endif
		655
529	struct timeval tv;	656	struct timeval tv;
530	gettimeofday (&tv, 0);	657	gettimeofday (&tv, 0);
531	return tv.tv_sec + tv.tv_usec * 1e-6;	658	return tv.tv_sec + tv.tv_usec * 1e-6;
532	#endif
533	}	659	}
		660	#endif
534		661
535	ev_tstamp inline_size	662	inline_size ev_tstamp
536	get_clock (void)	663	get_clock (void)
537	{	664	{
538	#if EV_USE_MONOTONIC	665	#if EV_USE_MONOTONIC
539	if (expect_true (have_monotonic))	666	if (expect_true (have_monotonic))
540	{	667	{
…		…
574		701
575	tv.tv_sec = (time_t)delay;	702	tv.tv_sec = (time_t)delay;
576	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	703	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
577		704
578	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */	705	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
579	/* somehting nto guaranteed by newer posix versions, but guaranteed */	706	/* something not guaranteed by newer posix versions, but guaranteed */
580	/* by older ones */	707	/* by older ones */
581	select (0, 0, 0, 0, &tv);	708	select (0, 0, 0, 0, &tv);
582	#endif	709	#endif
583	}	710	}
584	}	711	}
585		712
586	/*****************************************************************************/	713	/*****************************************************************************/
587		714
588	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	715	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
589		716
590	int inline_size	717	/* find a suitable new size for the given array, */
		718	/* hopefully by rounding to a ncie-to-malloc size */
		719	inline_size int
591	array_nextsize (int elem, int cur, int cnt)	720	array_nextsize (int elem, int cur, int cnt)
592	{	721	{
593	int ncur = cur + 1;	722	int ncur = cur + 1;
594		723
595	do	724	do
…		…
636	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	765	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
637	}	766	}
638	#endif	767	#endif
639		768
640	#define array_free(stem, idx) \	769	#define array_free(stem, idx) \
641	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	770	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
642		771
643	/*****************************************************************************/	772	/*****************************************************************************/
		773
		774	/* dummy callback for pending events */
		775	static void noinline
		776	pendingcb (EV_P_ ev_prepare *w, int revents)
		777	{
		778	}
644		779
645	void noinline	780	void noinline
646	ev_feed_event (EV_P_ void *w, int revents)	781	ev_feed_event (EV_P_ void *w, int revents)
647	{	782	{
648	W w_ = (W)w;	783	W w_ = (W)w;
…		…
657	pendings [pri][w_->pending - 1].w = w_;	792	pendings [pri][w_->pending - 1].w = w_;
658	pendings [pri][w_->pending - 1].events = revents;	793	pendings [pri][w_->pending - 1].events = revents;
659	}	794	}
660	}	795	}
661		796
662	void inline_speed	797	inline_speed void
		798	feed_reverse (EV_P_ W w)
		799	{
		800	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		801	rfeeds [rfeedcnt++] = w;
		802	}
		803
		804	inline_size void
		805	feed_reverse_done (EV_P_ int revents)
		806	{
		807	do
		808	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		809	while (rfeedcnt);
		810	}
		811
		812	inline_speed void
663	queue_events (EV_P_ W *events, int eventcnt, int type)	813	queue_events (EV_P_ W *events, int eventcnt, int type)
664	{	814	{
665	int i;	815	int i;
666		816
667	for (i = 0; i < eventcnt; ++i)	817	for (i = 0; i < eventcnt; ++i)
668	ev_feed_event (EV_A_ events [i], type);	818	ev_feed_event (EV_A_ events [i], type);
669	}	819	}
670		820
671	/*****************************************************************************/	821	/*****************************************************************************/
672		822
673	void inline_speed	823	inline_speed void
674	fd_event (EV_P_ int fd, int revents)	824	fd_event_nc (EV_P_ int fd, int revents)
675	{	825	{
676	ANFD *anfd = anfds + fd;	826	ANFD *anfd = anfds + fd;
677	ev_io *w;	827	ev_io *w;
678		828
679	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	829	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
683	if (ev)	833	if (ev)
684	ev_feed_event (EV_A_ (W)w, ev);	834	ev_feed_event (EV_A_ (W)w, ev);
685	}	835	}
686	}	836	}
687		837
		838	/* do not submit kernel events for fds that have reify set */
		839	/* because that means they changed while we were polling for new events */
		840	inline_speed void
		841	fd_event (EV_P_ int fd, int revents)
		842	{
		843	ANFD *anfd = anfds + fd;
		844
		845	if (expect_true (!anfd->reify))
		846	fd_event_nc (EV_A_ fd, revents);
		847	}
		848
688	void	849	void
689	ev_feed_fd_event (EV_P_ int fd, int revents)	850	ev_feed_fd_event (EV_P_ int fd, int revents)
690	{	851	{
691	if (fd >= 0 && fd < anfdmax)	852	if (fd >= 0 && fd < anfdmax)
692	fd_event (EV_A_ fd, revents);	853	fd_event_nc (EV_A_ fd, revents);
693	}	854	}
694		855
695	void inline_size	856	/* make sure the external fd watch events are in-sync */
		857	/* with the kernel/libev internal state */
		858	inline_size void
696	fd_reify (EV_P)	859	fd_reify (EV_P)
697	{	860	{
698	int i;	861	int i;
699		862
700	for (i = 0; i < fdchangecnt; ++i)	863	for (i = 0; i < fdchangecnt; ++i)
…		…
715	#ifdef EV_FD_TO_WIN32_HANDLE	878	#ifdef EV_FD_TO_WIN32_HANDLE
716	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	879	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
717	#else	880	#else
718	anfd->handle = _get_osfhandle (fd);	881	anfd->handle = _get_osfhandle (fd);
719	#endif	882	#endif
720	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	883	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
721	}	884	}
722	#endif	885	#endif
723		886
724	{	887	{
725	unsigned char o_events = anfd->events;	888	unsigned char o_events = anfd->events;
726	unsigned char o_reify = anfd->reify;	889	unsigned char o_reify = anfd->reify;
727		890
728	anfd->reify = 0;	891	anfd->reify = 0;
729	anfd->events = events;	892	anfd->events = events;
730		893
731	if (o_events != events || o_reify & EV_IOFDSET)	894	if (o_events != events || o_reify & EV__IOFDSET)
732	backend_modify (EV_A_ fd, o_events, events);	895	backend_modify (EV_A_ fd, o_events, events);
733	}	896	}
734	}	897	}
735		898
736	fdchangecnt = 0;	899	fdchangecnt = 0;
737	}	900	}
738		901
739	void inline_size	902	/* something about the given fd changed */
		903	inline_size void
740	fd_change (EV_P_ int fd, int flags)	904	fd_change (EV_P_ int fd, int flags)
741	{	905	{
742	unsigned char reify = anfds [fd].reify;	906	unsigned char reify = anfds [fd].reify;
743	anfds [fd].reify |= flags;	907	anfds [fd].reify |= flags;
744		908
…		…
748	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	912	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
749	fdchanges [fdchangecnt - 1] = fd;	913	fdchanges [fdchangecnt - 1] = fd;
750	}	914	}
751	}	915	}
752		916
753	void inline_speed	917	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		918	inline_speed void
754	fd_kill (EV_P_ int fd)	919	fd_kill (EV_P_ int fd)
755	{	920	{
756	ev_io *w;	921	ev_io *w;
757		922
758	while ((w = (ev_io *)anfds [fd].head))	923	while ((w = (ev_io *)anfds [fd].head))
…		…
760	ev_io_stop (EV_A_ w);	925	ev_io_stop (EV_A_ w);
761	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	926	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
762	}	927	}
763	}	928	}
764		929
765	int inline_size	930	/* check whether the given fd is atcually valid, for error recovery */
		931	inline_size int
766	fd_valid (int fd)	932	fd_valid (int fd)
767	{	933	{
768	#ifdef _WIN32	934	#ifdef _WIN32
769	return _get_osfhandle (fd) != -1;	935	return _get_osfhandle (fd) != -1;
770	#else	936	#else
…		…
806		972
807	for (fd = 0; fd < anfdmax; ++fd)	973	for (fd = 0; fd < anfdmax; ++fd)
808	if (anfds [fd].events)	974	if (anfds [fd].events)
809	{	975	{
810	anfds [fd].events = 0;	976	anfds [fd].events = 0;
		977	anfds [fd].emask = 0;
811	fd_change (EV_A_ fd, EV_IOFDSET | 1);	978	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
812	}	979	}
813	}	980	}
814		981
815	/*****************************************************************************/	982	/*****************************************************************************/
816		983
…		…
832	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	999	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
833	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)	1000	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
834	#define UPHEAP_DONE(p,k) ((p) == (k))	1001	#define UPHEAP_DONE(p,k) ((p) == (k))
835		1002
836	/* away from the root */	1003	/* away from the root */
837	void inline_speed	1004	inline_speed void
838	downheap (ANHE *heap, int N, int k)	1005	downheap (ANHE *heap, int N, int k)
839	{	1006	{
840	ANHE he = heap [k];	1007	ANHE he = heap [k];
841	ANHE *E = heap + N + HEAP0;	1008	ANHE *E = heap + N + HEAP0;
842		1009
…		…
882	#define HEAP0 1	1049	#define HEAP0 1
883	#define HPARENT(k) ((k) >> 1)	1050	#define HPARENT(k) ((k) >> 1)
884	#define UPHEAP_DONE(p,k) (!(p))	1051	#define UPHEAP_DONE(p,k) (!(p))
885		1052
886	/* away from the root */	1053	/* away from the root */
887	void inline_speed	1054	inline_speed void
888	downheap (ANHE *heap, int N, int k)	1055	downheap (ANHE *heap, int N, int k)
889	{	1056	{
890	ANHE he = heap [k];	1057	ANHE he = heap [k];
891		1058
892	for (;;)	1059	for (;;)
…		…
912	ev_active (ANHE_w (he)) = k;	1079	ev_active (ANHE_w (he)) = k;
913	}	1080	}
914	#endif	1081	#endif
915		1082
916	/* towards the root */	1083	/* towards the root */
917	void inline_speed	1084	inline_speed void
918	upheap (ANHE *heap, int k)	1085	upheap (ANHE *heap, int k)
919	{	1086	{
920	ANHE he = heap [k];	1087	ANHE he = heap [k];
921		1088
922	for (;;)	1089	for (;;)
…		…
933		1100
934	heap [k] = he;	1101	heap [k] = he;
935	ev_active (ANHE_w (he)) = k;	1102	ev_active (ANHE_w (he)) = k;
936	}	1103	}
937		1104
938	void inline_size	1105	/* move an element suitably so it is in a correct place */
		1106	inline_size void
939	adjustheap (ANHE *heap, int N, int k)	1107	adjustheap (ANHE *heap, int N, int k)
940	{	1108	{
941	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1109	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
942	upheap (heap, k);	1110	upheap (heap, k);
943	else	1111	else
944	downheap (heap, N, k);	1112	downheap (heap, N, k);
945	}	1113	}
946		1114
947	/* rebuild the heap: this function is used only once and executed rarely */	1115	/* rebuild the heap: this function is used only once and executed rarely */
948	void inline_size	1116	inline_size void
949	reheap (ANHE *heap, int N)	1117	reheap (ANHE *heap, int N)
950	{	1118	{
951	int i;	1119	int i;
952		1120
953	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */	1121	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
…		…
956	upheap (heap, i + HEAP0);	1124	upheap (heap, i + HEAP0);
957	}	1125	}
958		1126
959	/*****************************************************************************/	1127	/*****************************************************************************/
960		1128
		1129	/* associate signal watchers to a signal signal */
961	typedef struct	1130	typedef struct
962	{	1131	{
		1132	#if EV_MULTIPLICITY
		1133	EV_P;
		1134	#endif
963	WL head;	1135	WL head;
964	EV_ATOMIC_T gotsig;	1136	EV_ATOMIC_T gotsig;
965	} ANSIG;	1137	} ANSIG;
966		1138
967	static ANSIG *signals;	1139	static ANSIG signals [EV_NSIG - 1];
968	static int signalmax;
969
970	static EV_ATOMIC_T gotsig;	1140	static EV_ATOMIC_T gotsig;
971		1141
972	/*****************************************************************************/	1142	/*****************************************************************************/
973		1143
974	void inline_speed	1144	/* used to prepare libev internal fd's */
		1145	/* this is not fork-safe */
		1146	inline_speed void
975	fd_intern (int fd)	1147	fd_intern (int fd)
976	{	1148	{
977	#ifdef _WIN32	1149	#ifdef _WIN32
978	unsigned long arg = 1;	1150	unsigned long arg = 1;
979	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1151	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
984	}	1156	}
985		1157
986	static void noinline	1158	static void noinline
987	evpipe_init (EV_P)	1159	evpipe_init (EV_P)
988	{	1160	{
989	if (!ev_is_active (&pipeev))	1161	if (!ev_is_active (&pipe_w))
990	{	1162	{
991	#if EV_USE_EVENTFD	1163	#if EV_USE_EVENTFD
		1164	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1165	if (evfd < 0 && errno == EINVAL)
992	if ((evfd = eventfd (0, 0)) >= 0)	1166	evfd = eventfd (0, 0);
		1167
		1168	if (evfd >= 0)
993	{	1169	{
994	evpipe [0] = -1;	1170	evpipe [0] = -1;
995	fd_intern (evfd);	1171	fd_intern (evfd); /* doing it twice doesn't hurt */
996	ev_io_set (&pipeev, evfd, EV_READ);	1172	ev_io_set (&pipe_w, evfd, EV_READ);
997	}	1173	}
998	else	1174	else
999	#endif	1175	#endif
1000	{	1176	{
1001	while (pipe (evpipe))	1177	while (pipe (evpipe))
1002	syserr ("(libev) error creating signal/async pipe");	1178	ev_syserr ("(libev) error creating signal/async pipe");
1003		1179
1004	fd_intern (evpipe [0]);	1180	fd_intern (evpipe [0]);
1005	fd_intern (evpipe [1]);	1181	fd_intern (evpipe [1]);
1006	ev_io_set (&pipeev, evpipe [0], EV_READ);	1182	ev_io_set (&pipe_w, evpipe [0], EV_READ);
1007	}	1183	}
1008		1184
1009	ev_io_start (EV_A_ &pipeev);	1185	ev_io_start (EV_A_ &pipe_w);
1010	ev_unref (EV_A); /* watcher should not keep loop alive */	1186	ev_unref (EV_A); /* watcher should not keep loop alive */
1011	}	1187	}
1012	}	1188	}
1013		1189
1014	void inline_size	1190	inline_size void
1015	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1191	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1016	{	1192	{
1017	if (!*flag)	1193	if (!*flag)
1018	{	1194	{
1019	int old_errno = errno; /* save errno because write might clobber it */	1195	int old_errno = errno; /* save errno because write might clobber it */
…		…
1032		1208
1033	errno = old_errno;	1209	errno = old_errno;
1034	}	1210	}
1035	}	1211	}
1036		1212
		1213	/* called whenever the libev signal pipe */
		1214	/* got some events (signal, async) */
1037	static void	1215	static void
1038	pipecb (EV_P_ ev_io *iow, int revents)	1216	pipecb (EV_P_ ev_io *iow, int revents)
1039	{	1217	{
1040	#if EV_USE_EVENTFD	1218	#if EV_USE_EVENTFD
1041	if (evfd >= 0)	1219	if (evfd >= 0)
…		…
1053	if (gotsig && ev_is_default_loop (EV_A))	1231	if (gotsig && ev_is_default_loop (EV_A))
1054	{	1232	{
1055	int signum;	1233	int signum;
1056	gotsig = 0;	1234	gotsig = 0;
1057		1235
1058	for (signum = signalmax; signum--; )	1236	for (signum = EV_NSIG - 1; signum--; )
1059	if (signals [signum].gotsig)	1237	if (signals [signum].gotsig)
1060	ev_feed_signal_event (EV_A_ signum + 1);	1238	ev_feed_signal_event (EV_A_ signum + 1);
1061	}	1239	}
1062		1240
1063	#if EV_ASYNC_ENABLE	1241	#if EV_ASYNC_ENABLE
…		…
1080		1258
1081	static void	1259	static void
1082	ev_sighandler (int signum)	1260	ev_sighandler (int signum)
1083	{	1261	{
1084	#if EV_MULTIPLICITY	1262	#if EV_MULTIPLICITY
1085	struct ev_loop *loop = &default_loop_struct;	1263	EV_P = signals [signum - 1].loop;
1086	#endif	1264	#endif
1087		1265
1088	#if _WIN32	1266	#if _WIN32
1089	signal (signum, ev_sighandler);	1267	signal (signum, ev_sighandler);
1090	#endif	1268	#endif
…		…
1097	ev_feed_signal_event (EV_P_ int signum)	1275	ev_feed_signal_event (EV_P_ int signum)
1098	{	1276	{
1099	WL w;	1277	WL w;
1100		1278
1101	#if EV_MULTIPLICITY	1279	#if EV_MULTIPLICITY
1102	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1280	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1103	#endif	1281	#endif
		1282
		1283	if (signum <= 0 || signum > EV_NSIG)
		1284	return;
1104		1285
1105	--signum;	1286	--signum;
1106
1107	if (signum < 0 || signum >= signalmax)
1108	return;
1109		1287
1110	signals [signum].gotsig = 0;	1288	signals [signum].gotsig = 0;
1111		1289
1112	for (w = signals [signum].head; w; w = w->next)	1290	for (w = signals [signum].head; w; w = w->next)
1113	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1291	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1114	}	1292	}
1115		1293
		1294	#if EV_USE_SIGNALFD
		1295	static void
		1296	sigfdcb (EV_P_ ev_io *iow, int revents)
		1297	{
		1298	struct signalfd_siginfo si[2], *sip; /* these structs are big */
		1299
		1300	for (;;)
		1301	{
		1302	ssize_t res = read (sigfd, si, sizeof (si));
		1303
		1304	/* not ISO-C, as res might be -1, but works with SuS */
		1305	for (sip = si; (char *)sip < (char *)si + res; ++sip)
		1306	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1307
		1308	if (res < (ssize_t)sizeof (si))
		1309	break;
		1310	}
		1311	}
		1312	#endif
		1313
1116	/*****************************************************************************/	1314	/*****************************************************************************/
1117		1315
1118	static WL childs [EV_PID_HASHSIZE];	1316	static WL childs [EV_PID_HASHSIZE];
1119		1317
1120	#ifndef _WIN32	1318	#ifndef _WIN32
…		…
1123		1321
1124	#ifndef WIFCONTINUED	1322	#ifndef WIFCONTINUED
1125	# define WIFCONTINUED(status) 0	1323	# define WIFCONTINUED(status) 0
1126	#endif	1324	#endif
1127		1325
1128	void inline_speed	1326	/* handle a single child status event */
		1327	inline_speed void
1129	child_reap (EV_P_ int chain, int pid, int status)	1328	child_reap (EV_P_ int chain, int pid, int status)
1130	{	1329	{
1131	ev_child *w;	1330	ev_child *w;
1132	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1331	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1133		1332
…		…
1146		1345
1147	#ifndef WCONTINUED	1346	#ifndef WCONTINUED
1148	# define WCONTINUED 0	1347	# define WCONTINUED 0
1149	#endif	1348	#endif
1150		1349
		1350	/* called on sigchld etc., calls waitpid */
1151	static void	1351	static void
1152	childcb (EV_P_ ev_signal *sw, int revents)	1352	childcb (EV_P_ ev_signal *sw, int revents)
1153	{	1353	{
1154	int pid, status;	1354	int pid, status;
1155		1355
…		…
1236	/* kqueue is borked on everything but netbsd apparently */	1436	/* kqueue is borked on everything but netbsd apparently */
1237	/* it usually doesn't work correctly on anything but sockets and pipes */	1437	/* it usually doesn't work correctly on anything but sockets and pipes */
1238	flags &= ~EVBACKEND_KQUEUE;	1438	flags &= ~EVBACKEND_KQUEUE;
1239	#endif	1439	#endif
1240	#ifdef __APPLE__	1440	#ifdef __APPLE__
1241	// flags &= ~EVBACKEND_KQUEUE; for documentation	1441	/* only select works correctly on that "unix-certified" platform */
1242	flags &= ~EVBACKEND_POLL;	1442	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1443	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1243	#endif	1444	#endif
1244		1445
1245	return flags;	1446	return flags;
1246	}	1447	}
1247		1448
…		…
1261	ev_backend (EV_P)	1462	ev_backend (EV_P)
1262	{	1463	{
1263	return backend;	1464	return backend;
1264	}	1465	}
1265		1466
		1467	#if EV_MINIMAL < 2
1266	unsigned int	1468	unsigned int
1267	ev_loop_count (EV_P)	1469	ev_loop_count (EV_P)
1268	{	1470	{
1269	return loop_count;	1471	return loop_count;
1270	}	1472	}
1271		1473
		1474	unsigned int
		1475	ev_loop_depth (EV_P)
		1476	{
		1477	return loop_depth;
		1478	}
		1479
1272	void	1480	void
1273	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1481	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1274	{	1482	{
1275	io_blocktime = interval;	1483	io_blocktime = interval;
1276	}	1484	}
…		…
1279	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1487	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1280	{	1488	{
1281	timeout_blocktime = interval;	1489	timeout_blocktime = interval;
1282	}	1490	}
1283		1491
		1492	void
		1493	ev_set_userdata (EV_P_ void *data)
		1494	{
		1495	userdata = data;
		1496	}
		1497
		1498	void *
		1499	ev_userdata (EV_P)
		1500	{
		1501	return userdata;
		1502	}
		1503
		1504	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1505	{
		1506	invoke_cb = invoke_pending_cb;
		1507	}
		1508
		1509	void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
		1510	{
		1511	release_cb = release;
		1512	acquire_cb = acquire;
		1513	}
		1514	#endif
		1515
		1516	/* initialise a loop structure, must be zero-initialised */
1284	static void noinline	1517	static void noinline
1285	loop_init (EV_P_ unsigned int flags)	1518	loop_init (EV_P_ unsigned int flags)
1286	{	1519	{
1287	if (!backend)	1520	if (!backend)
1288	{	1521	{
		1522	#if EV_USE_REALTIME
		1523	if (!have_realtime)
		1524	{
		1525	struct timespec ts;
		1526
		1527	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1528	have_realtime = 1;
		1529	}
		1530	#endif
		1531
1289	#if EV_USE_MONOTONIC	1532	#if EV_USE_MONOTONIC
		1533	if (!have_monotonic)
1290	{	1534	{
1291	struct timespec ts;	1535	struct timespec ts;
		1536
1292	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1537	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1293	have_monotonic = 1;	1538	have_monotonic = 1;
1294	}	1539	}
1295	#endif	1540	#endif
		1541
		1542	/* pid check not overridable via env */
		1543	#ifndef _WIN32
		1544	if (flags & EVFLAG_FORKCHECK)
		1545	curpid = getpid ();
		1546	#endif
		1547
		1548	if (!(flags & EVFLAG_NOENV)
		1549	&& !enable_secure ()
		1550	&& getenv ("LIBEV_FLAGS"))
		1551	flags = atoi (getenv ("LIBEV_FLAGS"));
1296		1552
1297	ev_rt_now = ev_time ();	1553	ev_rt_now = ev_time ();
1298	mn_now = get_clock ();	1554	mn_now = get_clock ();
1299	now_floor = mn_now;	1555	now_floor = mn_now;
1300	rtmn_diff = ev_rt_now - mn_now;	1556	rtmn_diff = ev_rt_now - mn_now;
		1557	#if EV_MINIMAL < 2
		1558	invoke_cb = ev_invoke_pending;
		1559	#endif
1301		1560
1302	io_blocktime = 0.;	1561	io_blocktime = 0.;
1303	timeout_blocktime = 0.;	1562	timeout_blocktime = 0.;
1304	backend = 0;	1563	backend = 0;
1305	backend_fd = -1;	1564	backend_fd = -1;
1306	gotasync = 0;	1565	gotasync = 0;
1307	#if EV_USE_INOTIFY	1566	#if EV_USE_INOTIFY
1308	fs_fd = -2;	1567	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1309	#endif	1568	#endif
1310		1569	#if EV_USE_SIGNALFD
1311	/* pid check not overridable via env */	1570	sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2;
1312	#ifndef _WIN32
1313	if (flags & EVFLAG_FORKCHECK)
1314	curpid = getpid ();
1315	#endif	1571	#endif
1316
1317	if (!(flags & EVFLAG_NOENV)
1318	&& !enable_secure ()
1319	&& getenv ("LIBEV_FLAGS"))
1320	flags = atoi (getenv ("LIBEV_FLAGS"));
1321		1572
1322	if (!(flags & 0x0000ffffU))	1573	if (!(flags & 0x0000ffffU))
1323	flags |= ev_recommended_backends ();	1574	flags |= ev_recommended_backends ();
1324		1575
1325	#if EV_USE_PORT	1576	#if EV_USE_PORT
…		…
1336	#endif	1587	#endif
1337	#if EV_USE_SELECT	1588	#if EV_USE_SELECT
1338	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1589	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1339	#endif	1590	#endif
1340		1591
		1592	ev_prepare_init (&pending_w, pendingcb);
		1593
1341	ev_init (&pipeev, pipecb);	1594	ev_init (&pipe_w, pipecb);
1342	ev_set_priority (&pipeev, EV_MAXPRI);	1595	ev_set_priority (&pipe_w, EV_MAXPRI);
1343	}	1596	}
1344	}	1597	}
1345		1598
		1599	/* free up a loop structure */
1346	static void noinline	1600	static void noinline
1347	loop_destroy (EV_P)	1601	loop_destroy (EV_P)
1348	{	1602	{
1349	int i;	1603	int i;
1350		1604
1351	if (ev_is_active (&pipeev))	1605	if (ev_is_active (&pipe_w))
1352	{	1606	{
1353	ev_ref (EV_A); /* signal watcher */	1607	/*ev_ref (EV_A);*/
1354	ev_io_stop (EV_A_ &pipeev);	1608	/*ev_io_stop (EV_A_ &pipe_w);*/
1355		1609
1356	#if EV_USE_EVENTFD	1610	#if EV_USE_EVENTFD
1357	if (evfd >= 0)	1611	if (evfd >= 0)
1358	close (evfd);	1612	close (evfd);
1359	#endif	1613	#endif
…		…
1363	close (evpipe [0]);	1617	close (evpipe [0]);
1364	close (evpipe [1]);	1618	close (evpipe [1]);
1365	}	1619	}
1366	}	1620	}
1367		1621
		1622	#if EV_USE_SIGNALFD
		1623	if (ev_is_active (&sigfd_w))
		1624	{
		1625	/*ev_ref (EV_A);*/
		1626	/*ev_io_stop (EV_A_ &sigfd_w);*/
		1627
		1628	close (sigfd);
		1629	}
		1630	#endif
		1631
1368	#if EV_USE_INOTIFY	1632	#if EV_USE_INOTIFY
1369	if (fs_fd >= 0)	1633	if (fs_fd >= 0)
1370	close (fs_fd);	1634	close (fs_fd);
1371	#endif	1635	#endif
1372		1636
…		…
1395	#if EV_IDLE_ENABLE	1659	#if EV_IDLE_ENABLE
1396	array_free (idle, [i]);	1660	array_free (idle, [i]);
1397	#endif	1661	#endif
1398	}	1662	}
1399		1663
1400	ev_free (anfds); anfdmax = 0;	1664	ev_free (anfds); anfds = 0; anfdmax = 0;
1401		1665
1402	/* have to use the microsoft-never-gets-it-right macro */	1666	/* have to use the microsoft-never-gets-it-right macro */
		1667	array_free (rfeed, EMPTY);
1403	array_free (fdchange, EMPTY);	1668	array_free (fdchange, EMPTY);
1404	array_free (timer, EMPTY);	1669	array_free (timer, EMPTY);
1405	#if EV_PERIODIC_ENABLE	1670	#if EV_PERIODIC_ENABLE
1406	array_free (periodic, EMPTY);	1671	array_free (periodic, EMPTY);
1407	#endif	1672	#endif
…		…
1416		1681
1417	backend = 0;	1682	backend = 0;
1418	}	1683	}
1419		1684
1420	#if EV_USE_INOTIFY	1685	#if EV_USE_INOTIFY
1421	void inline_size infy_fork (EV_P);	1686	inline_size void infy_fork (EV_P);
1422	#endif	1687	#endif
1423		1688
1424	void inline_size	1689	inline_size void
1425	loop_fork (EV_P)	1690	loop_fork (EV_P)
1426	{	1691	{
1427	#if EV_USE_PORT	1692	#if EV_USE_PORT
1428	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1693	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1429	#endif	1694	#endif
…		…
1435	#endif	1700	#endif
1436	#if EV_USE_INOTIFY	1701	#if EV_USE_INOTIFY
1437	infy_fork (EV_A);	1702	infy_fork (EV_A);
1438	#endif	1703	#endif
1439		1704
1440	if (ev_is_active (&pipeev))	1705	if (ev_is_active (&pipe_w))
1441	{	1706	{
1442	/* this "locks" the handlers against writing to the pipe */	1707	/* this "locks" the handlers against writing to the pipe */
1443	/* while we modify the fd vars */	1708	/* while we modify the fd vars */
1444	gotsig = 1;	1709	gotsig = 1;
1445	#if EV_ASYNC_ENABLE	1710	#if EV_ASYNC_ENABLE
1446	gotasync = 1;	1711	gotasync = 1;
1447	#endif	1712	#endif
1448		1713
1449	ev_ref (EV_A);	1714	ev_ref (EV_A);
1450	ev_io_stop (EV_A_ &pipeev);	1715	ev_io_stop (EV_A_ &pipe_w);
1451		1716
1452	#if EV_USE_EVENTFD	1717	#if EV_USE_EVENTFD
1453	if (evfd >= 0)	1718	if (evfd >= 0)
1454	close (evfd);	1719	close (evfd);
1455	#endif	1720	#endif
…		…
1460	close (evpipe [1]);	1725	close (evpipe [1]);
1461	}	1726	}
1462		1727
1463	evpipe_init (EV_A);	1728	evpipe_init (EV_A);
1464	/* now iterate over everything, in case we missed something */	1729	/* now iterate over everything, in case we missed something */
1465	pipecb (EV_A_ &pipeev, EV_READ);	1730	pipecb (EV_A_ &pipe_w, EV_READ);
1466	}	1731	}
1467		1732
1468	postfork = 0;	1733	postfork = 0;
1469	}	1734	}
1470		1735
1471	#if EV_MULTIPLICITY	1736	#if EV_MULTIPLICITY
1472		1737
1473	struct ev_loop *	1738	struct ev_loop *
1474	ev_loop_new (unsigned int flags)	1739	ev_loop_new (unsigned int flags)
1475	{	1740	{
1476	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1741	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1477		1742
1478	memset (loop, 0, sizeof (struct ev_loop));	1743	memset (EV_A, 0, sizeof (struct ev_loop));
1479
1480	loop_init (EV_A_ flags);	1744	loop_init (EV_A_ flags);
1481		1745
1482	if (ev_backend (EV_A))	1746	if (ev_backend (EV_A))
1483	return loop;	1747	return EV_A;
1484		1748
1485	return 0;	1749	return 0;
1486	}	1750	}
1487		1751
1488	void	1752	void
…		…
1495	void	1759	void
1496	ev_loop_fork (EV_P)	1760	ev_loop_fork (EV_P)
1497	{	1761	{
1498	postfork = 1; /* must be in line with ev_default_fork */	1762	postfork = 1; /* must be in line with ev_default_fork */
1499	}	1763	}
		1764	#endif /* multiplicity */
1500		1765
1501	#if EV_VERIFY	1766	#if EV_VERIFY
1502	static void noinline	1767	static void noinline
1503	verify_watcher (EV_P_ W w)	1768	verify_watcher (EV_P_ W w)
1504	{	1769	{
1505	assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));	1770	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1506		1771
1507	if (w->pending)	1772	if (w->pending)
1508	assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));	1773	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1509	}	1774	}
1510		1775
1511	static void noinline	1776	static void noinline
1512	verify_heap (EV_P_ ANHE *heap, int N)	1777	verify_heap (EV_P_ ANHE *heap, int N)
1513	{	1778	{
1514	int i;	1779	int i;
1515		1780
1516	for (i = HEAP0; i < N + HEAP0; ++i)	1781	for (i = HEAP0; i < N + HEAP0; ++i)
1517	{	1782	{
1518	assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));	1783	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1519	assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));	1784	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1520	assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));	1785	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1521		1786
1522	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));	1787	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1523	}	1788	}
1524	}	1789	}
1525		1790
1526	static void noinline	1791	static void noinline
1527	array_verify (EV_P_ W *ws, int cnt)	1792	array_verify (EV_P_ W *ws, int cnt)
1528	{	1793	{
1529	while (cnt--)	1794	while (cnt--)
1530	{	1795	{
1531	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));	1796	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1532	verify_watcher (EV_A_ ws [cnt]);	1797	verify_watcher (EV_A_ ws [cnt]);
1533	}	1798	}
1534	}	1799	}
1535	#endif	1800	#endif
1536		1801
		1802	#if EV_MINIMAL < 2
1537	void	1803	void
1538	ev_loop_verify (EV_P)	1804	ev_loop_verify (EV_P)
1539	{	1805	{
1540	#if EV_VERIFY	1806	#if EV_VERIFY
1541	int i;	1807	int i;
…		…
1543		1809
1544	assert (activecnt >= -1);	1810	assert (activecnt >= -1);
1545		1811
1546	assert (fdchangemax >= fdchangecnt);	1812	assert (fdchangemax >= fdchangecnt);
1547	for (i = 0; i < fdchangecnt; ++i)	1813	for (i = 0; i < fdchangecnt; ++i)
1548	assert (("negative fd in fdchanges", fdchanges [i] >= 0));	1814	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1549		1815
1550	assert (anfdmax >= 0);	1816	assert (anfdmax >= 0);
1551	for (i = 0; i < anfdmax; ++i)	1817	for (i = 0; i < anfdmax; ++i)
1552	for (w = anfds [i].head; w; w = w->next)	1818	for (w = anfds [i].head; w; w = w->next)
1553	{	1819	{
1554	verify_watcher (EV_A_ (W)w);	1820	verify_watcher (EV_A_ (W)w);
1555	assert (("inactive fd watcher on anfd list", ev_active (w) == 1));	1821	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1556	assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));	1822	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1557	}	1823	}
1558		1824
1559	assert (timermax >= timercnt);	1825	assert (timermax >= timercnt);
1560	verify_heap (EV_A_ timers, timercnt);	1826	verify_heap (EV_A_ timers, timercnt);
1561		1827
…		…
1590	assert (checkmax >= checkcnt);	1856	assert (checkmax >= checkcnt);
1591	array_verify (EV_A_ (W *)checks, checkcnt);	1857	array_verify (EV_A_ (W *)checks, checkcnt);
1592		1858
1593	# if 0	1859	# if 0
1594	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1860	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1595	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)	1861	for (signum = EV_NSIG; signum--; ) if (signals [signum].gotsig)
1596	# endif	1862	# endif
1597	#endif	1863	#endif
1598	}	1864	}
1599		1865	#endif
1600	#endif /* multiplicity */
1601		1866
1602	#if EV_MULTIPLICITY	1867	#if EV_MULTIPLICITY
1603	struct ev_loop *	1868	struct ev_loop *
1604	ev_default_loop_init (unsigned int flags)	1869	ev_default_loop_init (unsigned int flags)
1605	#else	1870	#else
…		…
1608	#endif	1873	#endif
1609	{	1874	{
1610	if (!ev_default_loop_ptr)	1875	if (!ev_default_loop_ptr)
1611	{	1876	{
1612	#if EV_MULTIPLICITY	1877	#if EV_MULTIPLICITY
1613	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1878	EV_P = ev_default_loop_ptr = &default_loop_struct;
1614	#else	1879	#else
1615	ev_default_loop_ptr = 1;	1880	ev_default_loop_ptr = 1;
1616	#endif	1881	#endif
1617		1882
1618	loop_init (EV_A_ flags);	1883	loop_init (EV_A_ flags);
…		…
1635		1900
1636	void	1901	void
1637	ev_default_destroy (void)	1902	ev_default_destroy (void)
1638	{	1903	{
1639	#if EV_MULTIPLICITY	1904	#if EV_MULTIPLICITY
1640	struct ev_loop *loop = ev_default_loop_ptr;	1905	EV_P = ev_default_loop_ptr;
1641	#endif	1906	#endif
1642		1907
1643	ev_default_loop_ptr = 0;	1908	ev_default_loop_ptr = 0;
1644		1909
1645	#ifndef _WIN32	1910	#ifndef _WIN32
…		…
1652		1917
1653	void	1918	void
1654	ev_default_fork (void)	1919	ev_default_fork (void)
1655	{	1920	{
1656	#if EV_MULTIPLICITY	1921	#if EV_MULTIPLICITY
1657	struct ev_loop *loop = ev_default_loop_ptr;	1922	EV_P = ev_default_loop_ptr;
1658	#endif	1923	#endif
1659		1924
1660	if (backend)
1661	postfork = 1; /* must be in line with ev_loop_fork */	1925	postfork = 1; /* must be in line with ev_loop_fork */
1662	}	1926	}
1663		1927
1664	/*****************************************************************************/	1928	/*****************************************************************************/
1665		1929
1666	void	1930	void
1667	ev_invoke (EV_P_ void *w, int revents)	1931	ev_invoke (EV_P_ void *w, int revents)
1668	{	1932	{
1669	EV_CB_INVOKE ((W)w, revents);	1933	EV_CB_INVOKE ((W)w, revents);
1670	}	1934	}
1671		1935
1672	void inline_speed	1936	unsigned int
1673	call_pending (EV_P)	1937	ev_pending_count (EV_P)
		1938	{
		1939	int pri;
		1940	unsigned int count = 0;
		1941
		1942	for (pri = NUMPRI; pri--; )
		1943	count += pendingcnt [pri];
		1944
		1945	return count;
		1946	}
		1947
		1948	void noinline
		1949	ev_invoke_pending (EV_P)
1674	{	1950	{
1675	int pri;	1951	int pri;
1676		1952
1677	for (pri = NUMPRI; pri--; )	1953	for (pri = NUMPRI; pri--; )
1678	while (pendingcnt [pri])	1954	while (pendingcnt [pri])
1679	{	1955	{
1680	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1956	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1681		1957
1682	if (expect_true (p->w))
1683	{
1684	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1958	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1959	/* ^ this is no longer true, as pending_w could be here */
1685		1960
1686	p->w->pending = 0;	1961	p->w->pending = 0;
1687	EV_CB_INVOKE (p->w, p->events);	1962	EV_CB_INVOKE (p->w, p->events);
1688	EV_FREQUENT_CHECK;	1963	EV_FREQUENT_CHECK;
1689	}
1690	}	1964	}
1691	}	1965	}
1692		1966
1693	#if EV_IDLE_ENABLE	1967	#if EV_IDLE_ENABLE
1694	void inline_size	1968	/* make idle watchers pending. this handles the "call-idle */
		1969	/* only when higher priorities are idle" logic */
		1970	inline_size void
1695	idle_reify (EV_P)	1971	idle_reify (EV_P)
1696	{	1972	{
1697	if (expect_false (idleall))	1973	if (expect_false (idleall))
1698	{	1974	{
1699	int pri;	1975	int pri;
…		…
1711	}	1987	}
1712	}	1988	}
1713	}	1989	}
1714	#endif	1990	#endif
1715		1991
1716	void inline_size	1992	/* make timers pending */
		1993	inline_size void
1717	timers_reify (EV_P)	1994	timers_reify (EV_P)
1718	{	1995	{
1719	EV_FREQUENT_CHECK;	1996	EV_FREQUENT_CHECK;
1720		1997
1721	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	1998	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1722	{	1999	{
1723	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	2000	do
1724
1725	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1726
1727	/* first reschedule or stop timer */
1728	if (w->repeat)
1729	{	2001	{
		2002	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		2003
		2004	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		2005
		2006	/* first reschedule or stop timer */
		2007	if (w->repeat)
		2008	{
1730	ev_at (w) += w->repeat;	2009	ev_at (w) += w->repeat;
1731	if (ev_at (w) < mn_now)	2010	if (ev_at (w) < mn_now)
1732	ev_at (w) = mn_now;	2011	ev_at (w) = mn_now;
1733		2012
1734	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	2013	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1735		2014
1736	ANHE_at_cache (timers [HEAP0]);	2015	ANHE_at_cache (timers [HEAP0]);
1737	downheap (timers, timercnt, HEAP0);	2016	downheap (timers, timercnt, HEAP0);
		2017	}
		2018	else
		2019	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		2020
		2021	EV_FREQUENT_CHECK;
		2022	feed_reverse (EV_A_ (W)w);
1738	}	2023	}
1739	else	2024	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1740	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1741		2025
1742	EV_FREQUENT_CHECK;
1743	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	2026	feed_reverse_done (EV_A_ EV_TIMEOUT);
1744	}	2027	}
1745	}	2028	}
1746		2029
1747	#if EV_PERIODIC_ENABLE	2030	#if EV_PERIODIC_ENABLE
1748	void inline_size	2031	/* make periodics pending */
		2032	inline_size void
1749	periodics_reify (EV_P)	2033	periodics_reify (EV_P)
1750	{	2034	{
1751	EV_FREQUENT_CHECK;	2035	EV_FREQUENT_CHECK;
1752		2036
1753	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	2037	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1754	{	2038	{
1755	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	2039	int feed_count = 0;
1756		2040
1757	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	2041	do
1758
1759	/* first reschedule or stop timer */
1760	if (w->reschedule_cb)
1761	{	2042	{
		2043	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		2044
		2045	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		2046
		2047	/* first reschedule or stop timer */
		2048	if (w->reschedule_cb)
		2049	{
1762	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2050	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1763		2051
1764	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));	2052	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1765		2053
1766	ANHE_at_cache (periodics [HEAP0]);	2054	ANHE_at_cache (periodics [HEAP0]);
1767	downheap (periodics, periodiccnt, HEAP0);	2055	downheap (periodics, periodiccnt, HEAP0);
		2056	}
		2057	else if (w->interval)
		2058	{
		2059	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2060	/* if next trigger time is not sufficiently in the future, put it there */
		2061	/* this might happen because of floating point inexactness */
		2062	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		2063	{
		2064	ev_at (w) += w->interval;
		2065
		2066	/* if interval is unreasonably low we might still have a time in the past */
		2067	/* so correct this. this will make the periodic very inexact, but the user */
		2068	/* has effectively asked to get triggered more often than possible */
		2069	if (ev_at (w) < ev_rt_now)
		2070	ev_at (w) = ev_rt_now;
		2071	}
		2072
		2073	ANHE_at_cache (periodics [HEAP0]);
		2074	downheap (periodics, periodiccnt, HEAP0);
		2075	}
		2076	else
		2077	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		2078
		2079	EV_FREQUENT_CHECK;
		2080	feed_reverse (EV_A_ (W)w);
1768	}	2081	}
1769	else if (w->interval)	2082	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1770	{
1771	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1772	/* if next trigger time is not sufficiently in the future, put it there */
1773	/* this might happen because of floating point inexactness */
1774	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1775	{
1776	ev_at (w) += w->interval;
1777		2083
1778	/* if interval is unreasonably low we might still have a time in the past */
1779	/* so correct this. this will make the periodic very inexact, but the user */
1780	/* has effectively asked to get triggered more often than possible */
1781	if (ev_at (w) < ev_rt_now)
1782	ev_at (w) = ev_rt_now;
1783	}
1784
1785	ANHE_at_cache (periodics [HEAP0]);
1786	downheap (periodics, periodiccnt, HEAP0);
1787	}
1788	else
1789	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1790
1791	EV_FREQUENT_CHECK;
1792	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	2084	feed_reverse_done (EV_A_ EV_PERIODIC);
1793	}	2085	}
1794	}	2086	}
1795		2087
		2088	/* simply recalculate all periodics */
		2089	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1796	static void noinline	2090	static void noinline
1797	periodics_reschedule (EV_P)	2091	periodics_reschedule (EV_P)
1798	{	2092	{
1799	int i;	2093	int i;
1800		2094
…		…
1813		2107
1814	reheap (periodics, periodiccnt);	2108	reheap (periodics, periodiccnt);
1815	}	2109	}
1816	#endif	2110	#endif
1817		2111
1818	void inline_speed	2112	/* adjust all timers by a given offset */
		2113	static void noinline
		2114	timers_reschedule (EV_P_ ev_tstamp adjust)
		2115	{
		2116	int i;
		2117
		2118	for (i = 0; i < timercnt; ++i)
		2119	{
		2120	ANHE *he = timers + i + HEAP0;
		2121	ANHE_w (*he)->at += adjust;
		2122	ANHE_at_cache (*he);
		2123	}
		2124	}
		2125
		2126	/* fetch new monotonic and realtime times from the kernel */
		2127	/* also detetc if there was a timejump, and act accordingly */
		2128	inline_speed void
1819	time_update (EV_P_ ev_tstamp max_block)	2129	time_update (EV_P_ ev_tstamp max_block)
1820	{	2130	{
1821	int i;
1822
1823	#if EV_USE_MONOTONIC	2131	#if EV_USE_MONOTONIC
1824	if (expect_true (have_monotonic))	2132	if (expect_true (have_monotonic))
1825	{	2133	{
		2134	int i;
1826	ev_tstamp odiff = rtmn_diff;	2135	ev_tstamp odiff = rtmn_diff;
1827		2136
1828	mn_now = get_clock ();	2137	mn_now = get_clock ();
1829		2138
1830	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2139	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1856	ev_rt_now = ev_time ();	2165	ev_rt_now = ev_time ();
1857	mn_now = get_clock ();	2166	mn_now = get_clock ();
1858	now_floor = mn_now;	2167	now_floor = mn_now;
1859	}	2168	}
1860		2169
		2170	/* no timer adjustment, as the monotonic clock doesn't jump */
		2171	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1861	# if EV_PERIODIC_ENABLE	2172	# if EV_PERIODIC_ENABLE
1862	periodics_reschedule (EV_A);	2173	periodics_reschedule (EV_A);
1863	# endif	2174	# endif
1864	/* no timer adjustment, as the monotonic clock doesn't jump */
1865	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1866	}	2175	}
1867	else	2176	else
1868	#endif	2177	#endif
1869	{	2178	{
1870	ev_rt_now = ev_time ();	2179	ev_rt_now = ev_time ();
1871		2180
1872	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2181	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1873	{	2182	{
		2183	/* adjust timers. this is easy, as the offset is the same for all of them */
		2184	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1874	#if EV_PERIODIC_ENABLE	2185	#if EV_PERIODIC_ENABLE
1875	periodics_reschedule (EV_A);	2186	periodics_reschedule (EV_A);
1876	#endif	2187	#endif
1877	/* adjust timers. this is easy, as the offset is the same for all of them */
1878	for (i = 0; i < timercnt; ++i)
1879	{
1880	ANHE *he = timers + i + HEAP0;
1881	ANHE_w (*he)->at += ev_rt_now - mn_now;
1882	ANHE_at_cache (*he);
1883	}
1884	}	2188	}
1885		2189
1886	mn_now = ev_rt_now;	2190	mn_now = ev_rt_now;
1887	}	2191	}
1888	}	2192	}
1889		2193
1890	void	2194	void
1891	ev_ref (EV_P)
1892	{
1893	++activecnt;
1894	}
1895
1896	void
1897	ev_unref (EV_P)
1898	{
1899	--activecnt;
1900	}
1901
1902	void
1903	ev_now_update (EV_P)
1904	{
1905	time_update (EV_A_ 1e100);
1906	}
1907
1908	static int loop_done;
1909
1910	void
1911	ev_loop (EV_P_ int flags)	2195	ev_loop (EV_P_ int flags)
1912	{	2196	{
		2197	#if EV_MINIMAL < 2
		2198	++loop_depth;
		2199	#endif
		2200
		2201	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2202
1913	loop_done = EVUNLOOP_CANCEL;	2203	loop_done = EVUNLOOP_CANCEL;
1914		2204
1915	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2205	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1916		2206
1917	do	2207	do
1918	{	2208	{
1919	#if EV_VERIFY >= 2	2209	#if EV_VERIFY >= 2
1920	ev_loop_verify (EV_A);	2210	ev_loop_verify (EV_A);
…		…
1933	/* we might have forked, so queue fork handlers */	2223	/* we might have forked, so queue fork handlers */
1934	if (expect_false (postfork))	2224	if (expect_false (postfork))
1935	if (forkcnt)	2225	if (forkcnt)
1936	{	2226	{
1937	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2227	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1938	call_pending (EV_A);	2228	EV_INVOKE_PENDING;
1939	}	2229	}
1940	#endif	2230	#endif
1941		2231
1942	/* queue prepare watchers (and execute them) */	2232	/* queue prepare watchers (and execute them) */
1943	if (expect_false (preparecnt))	2233	if (expect_false (preparecnt))
1944	{	2234	{
1945	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2235	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1946	call_pending (EV_A);	2236	EV_INVOKE_PENDING;
1947	}	2237	}
1948		2238
1949	if (expect_false (!activecnt))	2239	if (expect_false (loop_done))
1950	break;	2240	break;
1951		2241
1952	/* we might have forked, so reify kernel state if necessary */	2242	/* we might have forked, so reify kernel state if necessary */
1953	if (expect_false (postfork))	2243	if (expect_false (postfork))
1954	loop_fork (EV_A);	2244	loop_fork (EV_A);
…		…
1961	ev_tstamp waittime = 0.;	2251	ev_tstamp waittime = 0.;
1962	ev_tstamp sleeptime = 0.;	2252	ev_tstamp sleeptime = 0.;
1963		2253
1964	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2254	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1965	{	2255	{
		2256	/* remember old timestamp for io_blocktime calculation */
		2257	ev_tstamp prev_mn_now = mn_now;
		2258
1966	/* update time to cancel out callback processing overhead */	2259	/* update time to cancel out callback processing overhead */
1967	time_update (EV_A_ 1e100);	2260	time_update (EV_A_ 1e100);
1968		2261
1969	waittime = MAX_BLOCKTIME;	2262	waittime = MAX_BLOCKTIME;
1970		2263
…		…
1980	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2273	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1981	if (waittime > to) waittime = to;	2274	if (waittime > to) waittime = to;
1982	}	2275	}
1983	#endif	2276	#endif
1984		2277
		2278	/* don't let timeouts decrease the waittime below timeout_blocktime */
1985	if (expect_false (waittime < timeout_blocktime))	2279	if (expect_false (waittime < timeout_blocktime))
1986	waittime = timeout_blocktime;	2280	waittime = timeout_blocktime;
1987		2281
1988	sleeptime = waittime - backend_fudge;	2282	/* extra check because io_blocktime is commonly 0 */
1989
1990	if (expect_true (sleeptime > io_blocktime))	2283	if (expect_false (io_blocktime))
1991	sleeptime = io_blocktime;
1992
1993	if (sleeptime)
1994	{	2284	{
		2285	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2286
		2287	if (sleeptime > waittime - backend_fudge)
		2288	sleeptime = waittime - backend_fudge;
		2289
		2290	if (expect_true (sleeptime > 0.))
		2291	{
1995	ev_sleep (sleeptime);	2292	ev_sleep (sleeptime);
1996	waittime -= sleeptime;	2293	waittime -= sleeptime;
		2294	}
1997	}	2295	}
1998	}	2296	}
1999		2297
		2298	#if EV_MINIMAL < 2
2000	++loop_count;	2299	++loop_count;
		2300	#endif
		2301	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2001	backend_poll (EV_A_ waittime);	2302	backend_poll (EV_A_ waittime);
		2303	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2002		2304
2003	/* update ev_rt_now, do magic */	2305	/* update ev_rt_now, do magic */
2004	time_update (EV_A_ waittime + sleeptime);	2306	time_update (EV_A_ waittime + sleeptime);
2005	}	2307	}
2006		2308
…		…
2017		2319
2018	/* queue check watchers, to be executed first */	2320	/* queue check watchers, to be executed first */
2019	if (expect_false (checkcnt))	2321	if (expect_false (checkcnt))
2020	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2322	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2021		2323
2022	call_pending (EV_A);	2324	EV_INVOKE_PENDING;
2023	}	2325	}
2024	while (expect_true (	2326	while (expect_true (
2025	activecnt	2327	activecnt
2026	&& !loop_done	2328	&& !loop_done
2027	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2329	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2028	));	2330	));
2029		2331
2030	if (loop_done == EVUNLOOP_ONE)	2332	if (loop_done == EVUNLOOP_ONE)
2031	loop_done = EVUNLOOP_CANCEL;	2333	loop_done = EVUNLOOP_CANCEL;
		2334
		2335	#if EV_MINIMAL < 2
		2336	--loop_depth;
		2337	#endif
2032	}	2338	}
2033		2339
2034	void	2340	void
2035	ev_unloop (EV_P_ int how)	2341	ev_unloop (EV_P_ int how)
2036	{	2342	{
2037	loop_done = how;	2343	loop_done = how;
2038	}	2344	}
2039		2345
		2346	void
		2347	ev_ref (EV_P)
		2348	{
		2349	++activecnt;
		2350	}
		2351
		2352	void
		2353	ev_unref (EV_P)
		2354	{
		2355	--activecnt;
		2356	}
		2357
		2358	void
		2359	ev_now_update (EV_P)
		2360	{
		2361	time_update (EV_A_ 1e100);
		2362	}
		2363
		2364	void
		2365	ev_suspend (EV_P)
		2366	{
		2367	ev_now_update (EV_A);
		2368	}
		2369
		2370	void
		2371	ev_resume (EV_P)
		2372	{
		2373	ev_tstamp mn_prev = mn_now;
		2374
		2375	ev_now_update (EV_A);
		2376	timers_reschedule (EV_A_ mn_now - mn_prev);
		2377	#if EV_PERIODIC_ENABLE
		2378	/* TODO: really do this? */
		2379	periodics_reschedule (EV_A);
		2380	#endif
		2381	}
		2382
2040	/*****************************************************************************/	2383	/*****************************************************************************/
		2384	/* singly-linked list management, used when the expected list length is short */
2041		2385
2042	void inline_size	2386	inline_size void
2043	wlist_add (WL *head, WL elem)	2387	wlist_add (WL *head, WL elem)
2044	{	2388	{
2045	elem->next = *head;	2389	elem->next = *head;
2046	*head = elem;	2390	*head = elem;
2047	}	2391	}
2048		2392
2049	void inline_size	2393	inline_size void
2050	wlist_del (WL *head, WL elem)	2394	wlist_del (WL *head, WL elem)
2051	{	2395	{
2052	while (*head)	2396	while (*head)
2053	{	2397	{
2054	if (*head == elem)	2398	if (*head == elem)
…		…
2059		2403
2060	head = &(*head)->next;	2404	head = &(*head)->next;
2061	}	2405	}
2062	}	2406	}
2063		2407
2064	void inline_speed	2408	/* internal, faster, version of ev_clear_pending */
		2409	inline_speed void
2065	clear_pending (EV_P_ W w)	2410	clear_pending (EV_P_ W w)
2066	{	2411	{
2067	if (w->pending)	2412	if (w->pending)
2068	{	2413	{
2069	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2414	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2070	w->pending = 0;	2415	w->pending = 0;
2071	}	2416	}
2072	}	2417	}
2073		2418
2074	int	2419	int
…		…
2078	int pending = w_->pending;	2423	int pending = w_->pending;
2079		2424
2080	if (expect_true (pending))	2425	if (expect_true (pending))
2081	{	2426	{
2082	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2427	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2428	p->w = (W)&pending_w;
2083	w_->pending = 0;	2429	w_->pending = 0;
2084	p->w = 0;
2085	return p->events;	2430	return p->events;
2086	}	2431	}
2087	else	2432	else
2088	return 0;	2433	return 0;
2089	}	2434	}
2090		2435
2091	void inline_size	2436	inline_size void
2092	pri_adjust (EV_P_ W w)	2437	pri_adjust (EV_P_ W w)
2093	{	2438	{
2094	int pri = w->priority;	2439	int pri = ev_priority (w);
2095	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2440	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2096	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2441	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2097	w->priority = pri;	2442	ev_set_priority (w, pri);
2098	}	2443	}
2099		2444
2100	void inline_speed	2445	inline_speed void
2101	ev_start (EV_P_ W w, int active)	2446	ev_start (EV_P_ W w, int active)
2102	{	2447	{
2103	pri_adjust (EV_A_ w);	2448	pri_adjust (EV_A_ w);
2104	w->active = active;	2449	w->active = active;
2105	ev_ref (EV_A);	2450	ev_ref (EV_A);
2106	}	2451	}
2107		2452
2108	void inline_size	2453	inline_size void
2109	ev_stop (EV_P_ W w)	2454	ev_stop (EV_P_ W w)
2110	{	2455	{
2111	ev_unref (EV_A);	2456	ev_unref (EV_A);
2112	w->active = 0;	2457	w->active = 0;
2113	}	2458	}
…		…
2120	int fd = w->fd;	2465	int fd = w->fd;
2121		2466
2122	if (expect_false (ev_is_active (w)))	2467	if (expect_false (ev_is_active (w)))
2123	return;	2468	return;
2124		2469
2125	assert (("ev_io_start called with negative fd", fd >= 0));	2470	assert (("libev: ev_io_start called with negative fd", fd >= 0));
2126	assert (("ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE))));	2471	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2127		2472
2128	EV_FREQUENT_CHECK;	2473	EV_FREQUENT_CHECK;
2129		2474
2130	ev_start (EV_A_ (W)w, 1);	2475	ev_start (EV_A_ (W)w, 1);
2131	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2476	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2132	wlist_add (&anfds[fd].head, (WL)w);	2477	wlist_add (&anfds[fd].head, (WL)w);
2133		2478
2134	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2479	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2135	w->events &= ~EV_IOFDSET;	2480	w->events &= ~EV__IOFDSET;
2136		2481
2137	EV_FREQUENT_CHECK;	2482	EV_FREQUENT_CHECK;
2138	}	2483	}
2139		2484
2140	void noinline	2485	void noinline
…		…
2142	{	2487	{
2143	clear_pending (EV_A_ (W)w);	2488	clear_pending (EV_A_ (W)w);
2144	if (expect_false (!ev_is_active (w)))	2489	if (expect_false (!ev_is_active (w)))
2145	return;	2490	return;
2146		2491
2147	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2492	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2148		2493
2149	EV_FREQUENT_CHECK;	2494	EV_FREQUENT_CHECK;
2150		2495
2151	wlist_del (&anfds[w->fd].head, (WL)w);	2496	wlist_del (&anfds[w->fd].head, (WL)w);
2152	ev_stop (EV_A_ (W)w);	2497	ev_stop (EV_A_ (W)w);
…		…
2162	if (expect_false (ev_is_active (w)))	2507	if (expect_false (ev_is_active (w)))
2163	return;	2508	return;
2164		2509
2165	ev_at (w) += mn_now;	2510	ev_at (w) += mn_now;
2166		2511
2167	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2512	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2168		2513
2169	EV_FREQUENT_CHECK;	2514	EV_FREQUENT_CHECK;
2170		2515
2171	++timercnt;	2516	++timercnt;
2172	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);	2517	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
…		…
2175	ANHE_at_cache (timers [ev_active (w)]);	2520	ANHE_at_cache (timers [ev_active (w)]);
2176	upheap (timers, ev_active (w));	2521	upheap (timers, ev_active (w));
2177		2522
2178	EV_FREQUENT_CHECK;	2523	EV_FREQUENT_CHECK;
2179		2524
2180	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2525	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2181	}	2526	}
2182		2527
2183	void noinline	2528	void noinline
2184	ev_timer_stop (EV_P_ ev_timer *w)	2529	ev_timer_stop (EV_P_ ev_timer *w)
2185	{	2530	{
…		…
2190	EV_FREQUENT_CHECK;	2535	EV_FREQUENT_CHECK;
2191		2536
2192	{	2537	{
2193	int active = ev_active (w);	2538	int active = ev_active (w);
2194		2539
2195	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2540	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2196		2541
2197	--timercnt;	2542	--timercnt;
2198		2543
2199	if (expect_true (active < timercnt + HEAP0))	2544	if (expect_true (active < timercnt + HEAP0))
2200	{	2545	{
…		…
2233	}	2578	}
2234		2579
2235	EV_FREQUENT_CHECK;	2580	EV_FREQUENT_CHECK;
2236	}	2581	}
2237		2582
		2583	ev_tstamp
		2584	ev_timer_remaining (EV_P_ ev_timer *w)
		2585	{
		2586	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
		2587	}
		2588
2238	#if EV_PERIODIC_ENABLE	2589	#if EV_PERIODIC_ENABLE
2239	void noinline	2590	void noinline
2240	ev_periodic_start (EV_P_ ev_periodic *w)	2591	ev_periodic_start (EV_P_ ev_periodic *w)
2241	{	2592	{
2242	if (expect_false (ev_is_active (w)))	2593	if (expect_false (ev_is_active (w)))
…		…
2244		2595
2245	if (w->reschedule_cb)	2596	if (w->reschedule_cb)
2246	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2597	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2247	else if (w->interval)	2598	else if (w->interval)
2248	{	2599	{
2249	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2600	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2250	/* this formula differs from the one in periodic_reify because we do not always round up */	2601	/* this formula differs from the one in periodic_reify because we do not always round up */
2251	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2602	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2252	}	2603	}
2253	else	2604	else
2254	ev_at (w) = w->offset;	2605	ev_at (w) = w->offset;
…		…
2262	ANHE_at_cache (periodics [ev_active (w)]);	2613	ANHE_at_cache (periodics [ev_active (w)]);
2263	upheap (periodics, ev_active (w));	2614	upheap (periodics, ev_active (w));
2264		2615
2265	EV_FREQUENT_CHECK;	2616	EV_FREQUENT_CHECK;
2266		2617
2267	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2618	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2268	}	2619	}
2269		2620
2270	void noinline	2621	void noinline
2271	ev_periodic_stop (EV_P_ ev_periodic *w)	2622	ev_periodic_stop (EV_P_ ev_periodic *w)
2272	{	2623	{
…		…
2277	EV_FREQUENT_CHECK;	2628	EV_FREQUENT_CHECK;
2278		2629
2279	{	2630	{
2280	int active = ev_active (w);	2631	int active = ev_active (w);
2281		2632
2282	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2633	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2283		2634
2284	--periodiccnt;	2635	--periodiccnt;
2285		2636
2286	if (expect_true (active < periodiccnt + HEAP0))	2637	if (expect_true (active < periodiccnt + HEAP0))
2287	{	2638	{
…		…
2309	#endif	2660	#endif
2310		2661
2311	void noinline	2662	void noinline
2312	ev_signal_start (EV_P_ ev_signal *w)	2663	ev_signal_start (EV_P_ ev_signal *w)
2313	{	2664	{
2314	#if EV_MULTIPLICITY
2315	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2316	#endif
2317	if (expect_false (ev_is_active (w)))	2665	if (expect_false (ev_is_active (w)))
2318	return;	2666	return;
2319		2667
2320	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2668	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2321		2669
2322	evpipe_init (EV_A);	2670	#if EV_MULTIPLICITY
		2671	assert (("libev: tried to attach to a signal from two different loops",
		2672	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2323		2673
2324	EV_FREQUENT_CHECK;	2674	signals [w->signum - 1].loop = EV_A;
		2675	#endif
2325		2676
		2677	EV_FREQUENT_CHECK;
		2678
		2679	#if EV_USE_SIGNALFD
		2680	if (sigfd == -2)
2326	{	2681	{
2327	#ifndef _WIN32	2682	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2328	sigset_t full, prev;	2683	if (sigfd < 0 && errno == EINVAL)
2329	sigfillset (&full);	2684	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2330	sigprocmask (SIG_SETMASK, &full, &prev);
2331	#endif
2332		2685
2333	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);	2686	if (sigfd >= 0)
		2687	{
		2688	fd_intern (sigfd); /* doing it twice will not hurt */
2334		2689
2335	#ifndef _WIN32	2690	sigemptyset (&sigfd_set);
2336	sigprocmask (SIG_SETMASK, &prev, 0);	2691
2337	#endif	2692	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2693	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2694	ev_io_start (EV_A_ &sigfd_w);
		2695	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2696	}
2338	}	2697	}
		2698
		2699	if (sigfd >= 0)
		2700	{
		2701	/* TODO: check .head */
		2702	sigaddset (&sigfd_set, w->signum);
		2703	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2704
		2705	signalfd (sigfd, &sigfd_set, 0);
		2706	}
		2707	#endif
2339		2708
2340	ev_start (EV_A_ (W)w, 1);	2709	ev_start (EV_A_ (W)w, 1);
2341	wlist_add (&signals [w->signum - 1].head, (WL)w);	2710	wlist_add (&signals [w->signum - 1].head, (WL)w);
2342		2711
2343	if (!((WL)w)->next)	2712	if (!((WL)w)->next)
		2713	# if EV_USE_SIGNALFD
		2714	if (sigfd < 0) /*TODO*/
		2715	# endif
2344	{	2716	{
2345	#if _WIN32	2717	# if _WIN32
2346	signal (w->signum, ev_sighandler);	2718	signal (w->signum, ev_sighandler);
2347	#else	2719	# else
2348	struct sigaction sa;	2720	struct sigaction sa;
		2721
		2722	evpipe_init (EV_A);
		2723
2349	sa.sa_handler = ev_sighandler;	2724	sa.sa_handler = ev_sighandler;
2350	sigfillset (&sa.sa_mask);	2725	sigfillset (&sa.sa_mask);
2351	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2726	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2352	sigaction (w->signum, &sa, 0);	2727	sigaction (w->signum, &sa, 0);
		2728
		2729	sigemptyset (&sa.sa_mask);
		2730	sigaddset (&sa.sa_mask, w->signum);
		2731	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2353	#endif	2732	#endif
2354	}	2733	}
2355		2734
2356	EV_FREQUENT_CHECK;	2735	EV_FREQUENT_CHECK;
2357	}	2736	}
2358		2737
2359	void noinline	2738	void noinline
…		…
2367		2746
2368	wlist_del (&signals [w->signum - 1].head, (WL)w);	2747	wlist_del (&signals [w->signum - 1].head, (WL)w);
2369	ev_stop (EV_A_ (W)w);	2748	ev_stop (EV_A_ (W)w);
2370		2749
2371	if (!signals [w->signum - 1].head)	2750	if (!signals [w->signum - 1].head)
		2751	{
		2752	#if EV_MULTIPLICITY
		2753	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2754	#endif
		2755	#if EV_USE_SIGNALFD
		2756	if (sigfd >= 0)
		2757	{
		2758	sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D
		2759	sigdelset (&sigfd_set, w->signum);
		2760	signalfd (sigfd, &sigfd_set, 0);
		2761	sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D
		2762	/*TODO: maybe unblock signal? */
		2763	}
		2764	else
		2765	#endif
2372	signal (w->signum, SIG_DFL);	2766	signal (w->signum, SIG_DFL);
		2767	}
2373		2768
2374	EV_FREQUENT_CHECK;	2769	EV_FREQUENT_CHECK;
2375	}	2770	}
2376		2771
2377	void	2772	void
2378	ev_child_start (EV_P_ ev_child *w)	2773	ev_child_start (EV_P_ ev_child *w)
2379	{	2774	{
2380	#if EV_MULTIPLICITY	2775	#if EV_MULTIPLICITY
2381	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2776	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2382	#endif	2777	#endif
2383	if (expect_false (ev_is_active (w)))	2778	if (expect_false (ev_is_active (w)))
2384	return;	2779	return;
2385		2780
2386	EV_FREQUENT_CHECK;	2781	EV_FREQUENT_CHECK;
…		…
2411	# ifdef _WIN32	2806	# ifdef _WIN32
2412	# undef lstat	2807	# undef lstat
2413	# define lstat(a,b) _stati64 (a,b)	2808	# define lstat(a,b) _stati64 (a,b)
2414	# endif	2809	# endif
2415		2810
2416	#define DEF_STAT_INTERVAL 5.0074891	2811	#define DEF_STAT_INTERVAL 5.0074891
		2812	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2417	#define MIN_STAT_INTERVAL 0.1074891	2813	#define MIN_STAT_INTERVAL 0.1074891
2418		2814
2419	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2815	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2420		2816
2421	#if EV_USE_INOTIFY	2817	#if EV_USE_INOTIFY
2422	# define EV_INOTIFY_BUFSIZE 8192	2818	# define EV_INOTIFY_BUFSIZE 8192
…		…
2426	{	2822	{
2427	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);	2823	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);
2428		2824
2429	if (w->wd < 0)	2825	if (w->wd < 0)
2430	{	2826	{
		2827	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2431	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2828	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2432		2829
2433	/* monitor some parent directory for speedup hints */	2830	/* monitor some parent directory for speedup hints */
2434	/* note that exceeding the hardcoded limit is not a correctness issue, */	2831	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2435	/* but an efficiency issue only */	2832	/* but an efficiency issue only */
2436	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2833	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2437	{	2834	{
2438	char path [4096];	2835	char path [4096];
2439	strcpy (path, w->path);	2836	strcpy (path, w->path);
…		…
2443	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2840	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2444	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2841	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2445		2842
2446	char *pend = strrchr (path, '/');	2843	char *pend = strrchr (path, '/');
2447		2844
2448	if (!pend)	2845	if (!pend || pend == path)
2449	break; /* whoops, no '/', complain to your admin */	2846	break;
2450		2847
2451	*pend = 0;	2848	*pend = 0;
2452	w->wd = inotify_add_watch (fs_fd, path, mask);	2849	w->wd = inotify_add_watch (fs_fd, path, mask);
2453	}	2850	}
2454	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2851	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2455	}	2852	}
2456	}	2853	}
2457	else
2458	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2459		2854
2460	if (w->wd >= 0)	2855	if (w->wd >= 0)
		2856	{
2461	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2857	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2858
		2859	/* now local changes will be tracked by inotify, but remote changes won't */
		2860	/* unless the filesystem it known to be local, we therefore still poll */
		2861	/* also do poll on <2.6.25, but with normal frequency */
		2862	struct statfs sfs;
		2863
		2864	if (fs_2625 && !statfs (w->path, &sfs))
		2865	if (sfs.f_type == 0x1373 /* devfs */
		2866	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2867	|| sfs.f_type == 0x3153464a /* jfs */
		2868	|| sfs.f_type == 0x52654973 /* reiser3 */
		2869	|| sfs.f_type == 0x01021994 /* tempfs */
		2870	|| sfs.f_type == 0x58465342 /* xfs */)
		2871	return;
		2872
		2873	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2874	ev_timer_again (EV_A_ &w->timer);
		2875	}
2462	}	2876	}
2463		2877
2464	static void noinline	2878	static void noinline
2465	infy_del (EV_P_ ev_stat *w)	2879	infy_del (EV_P_ ev_stat *w)
2466	{	2880	{
…		…
2496		2910
2497	if (w->wd == wd || wd == -1)	2911	if (w->wd == wd || wd == -1)
2498	{	2912	{
2499	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2913	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2500	{	2914	{
		2915	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2501	w->wd = -1;	2916	w->wd = -1;
2502	infy_add (EV_A_ w); /* re-add, no matter what */	2917	infy_add (EV_A_ w); /* re-add, no matter what */
2503	}	2918	}
2504		2919
2505	stat_timer_cb (EV_A_ &w->timer, 0);	2920	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2518		2933
2519	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2934	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2520	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2935	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2521	}	2936	}
2522		2937
2523	void inline_size	2938	inline_size void
2524	infy_init (EV_P)	2939	check_2625 (EV_P)
2525	{	2940	{
2526	if (fs_fd != -2)
2527	return;
2528
2529	/* kernels < 2.6.25 are borked	2941	/* kernels < 2.6.25 are borked
2530	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html	2942	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2531	*/	2943	*/
2532	{
2533	struct utsname buf;	2944	struct utsname buf;
2534	int major, minor, micro;	2945	int major, minor, micro;
2535		2946
2536	fs_fd = -1;
2537
2538	if (uname (&buf))	2947	if (uname (&buf))
2539	return;	2948	return;
2540		2949
2541	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)	2950	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2542	return;	2951	return;
2543		2952
2544	if (major < 2	2953	if (major < 2
2545	|| (major == 2 && minor < 6)	2954	|| (major == 2 && minor < 6)
2546	|| (major == 2 && minor == 6 && micro < 25))	2955	|| (major == 2 && minor == 6 && micro < 25))
2547	return;	2956	return;
2548	}	2957
		2958	fs_2625 = 1;
		2959	}
		2960
		2961	inline_size void
		2962	infy_init (EV_P)
		2963	{
		2964	if (fs_fd != -2)
		2965	return;
		2966
		2967	fs_fd = -1;
		2968
		2969	check_2625 (EV_A);
2549		2970
2550	fs_fd = inotify_init ();	2971	fs_fd = inotify_init ();
2551		2972
2552	if (fs_fd >= 0)	2973	if (fs_fd >= 0)
2553	{	2974	{
…		…
2555	ev_set_priority (&fs_w, EV_MAXPRI);	2976	ev_set_priority (&fs_w, EV_MAXPRI);
2556	ev_io_start (EV_A_ &fs_w);	2977	ev_io_start (EV_A_ &fs_w);
2557	}	2978	}
2558	}	2979	}
2559		2980
2560	void inline_size	2981	inline_size void
2561	infy_fork (EV_P)	2982	infy_fork (EV_P)
2562	{	2983	{
2563	int slot;	2984	int slot;
2564		2985
2565	if (fs_fd < 0)	2986	if (fs_fd < 0)
…		…
2581	w->wd = -1;	3002	w->wd = -1;
2582		3003
2583	if (fs_fd >= 0)	3004	if (fs_fd >= 0)
2584	infy_add (EV_A_ w); /* re-add, no matter what */	3005	infy_add (EV_A_ w); /* re-add, no matter what */
2585	else	3006	else
2586	ev_timer_start (EV_A_ &w->timer);	3007	ev_timer_again (EV_A_ &w->timer);
2587	}	3008	}
2588	}	3009	}
2589	}	3010	}
2590		3011
2591	#endif	3012	#endif
…		…
2646	ev_stat_start (EV_P_ ev_stat *w)	3067	ev_stat_start (EV_P_ ev_stat *w)
2647	{	3068	{
2648	if (expect_false (ev_is_active (w)))	3069	if (expect_false (ev_is_active (w)))
2649	return;	3070	return;
2650		3071
2651	/* since we use memcmp, we need to clear any padding data etc. */
2652	memset (&w->prev, 0, sizeof (ev_statdata));
2653	memset (&w->attr, 0, sizeof (ev_statdata));
2654
2655	ev_stat_stat (EV_A_ w);	3072	ev_stat_stat (EV_A_ w);
2656		3073
		3074	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2657	if (w->interval < MIN_STAT_INTERVAL)	3075	w->interval = MIN_STAT_INTERVAL;
2658	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2659		3076
2660	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	3077	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2661	ev_set_priority (&w->timer, ev_priority (w));	3078	ev_set_priority (&w->timer, ev_priority (w));
2662		3079
2663	#if EV_USE_INOTIFY	3080	#if EV_USE_INOTIFY
2664	infy_init (EV_A);	3081	infy_init (EV_A);
2665		3082
2666	if (fs_fd >= 0)	3083	if (fs_fd >= 0)
2667	infy_add (EV_A_ w);	3084	infy_add (EV_A_ w);
2668	else	3085	else
2669	#endif	3086	#endif
2670	ev_timer_start (EV_A_ &w->timer);	3087	ev_timer_again (EV_A_ &w->timer);
2671		3088
2672	ev_start (EV_A_ (W)w, 1);	3089	ev_start (EV_A_ (W)w, 1);
2673		3090
2674	EV_FREQUENT_CHECK;	3091	EV_FREQUENT_CHECK;
2675	}	3092	}
…		…
2835	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3252	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2836	{	3253	{
2837	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3254	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2838		3255
2839	{	3256	{
2840	struct ev_loop *loop = w->other;	3257	EV_P = w->other;
2841		3258
2842	while (fdchangecnt)	3259	while (fdchangecnt)
2843	{	3260	{
2844	fd_reify (EV_A);	3261	fd_reify (EV_A);
2845	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3262	ev_loop (EV_A_ EVLOOP_NONBLOCK);
…		…
2850	static void	3267	static void
2851	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)	3268	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2852	{	3269	{
2853	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));	3270	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2854		3271
		3272	ev_embed_stop (EV_A_ w);
		3273
2855	{	3274	{
2856	struct ev_loop *loop = w->other;	3275	EV_P = w->other;
2857		3276
2858	ev_loop_fork (EV_A);	3277	ev_loop_fork (EV_A);
		3278	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2859	}	3279	}
		3280
		3281	ev_embed_start (EV_A_ w);
2860	}	3282	}
2861		3283
2862	#if 0	3284	#if 0
2863	static void	3285	static void
2864	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3286	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
…		…
2872	{	3294	{
2873	if (expect_false (ev_is_active (w)))	3295	if (expect_false (ev_is_active (w)))
2874	return;	3296	return;
2875		3297
2876	{	3298	{
2877	struct ev_loop *loop = w->other;	3299	EV_P = w->other;
2878	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3300	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2879	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3301	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2880	}	3302	}
2881		3303
2882	EV_FREQUENT_CHECK;	3304	EV_FREQUENT_CHECK;
2883		3305
…		…
3066	ev_timer_set (&once->to, timeout, 0.);	3488	ev_timer_set (&once->to, timeout, 0.);
3067	ev_timer_start (EV_A_ &once->to);	3489	ev_timer_start (EV_A_ &once->to);
3068	}	3490	}
3069	}	3491	}
3070		3492
		3493	/*****************************************************************************/
		3494
		3495	#if EV_WALK_ENABLE
		3496	void
		3497	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3498	{
		3499	int i, j;
		3500	ev_watcher_list *wl, *wn;
		3501
		3502	if (types & (EV_IO | EV_EMBED))
		3503	for (i = 0; i < anfdmax; ++i)
		3504	for (wl = anfds [i].head; wl; )
		3505	{
		3506	wn = wl->next;
		3507
		3508	#if EV_EMBED_ENABLE
		3509	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3510	{
		3511	if (types & EV_EMBED)
		3512	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3513	}
		3514	else
		3515	#endif
		3516	#if EV_USE_INOTIFY
		3517	if (ev_cb ((ev_io *)wl) == infy_cb)
		3518	;
		3519	else
		3520	#endif
		3521	if ((ev_io *)wl != &pipe_w)
		3522	if (types & EV_IO)
		3523	cb (EV_A_ EV_IO, wl);
		3524
		3525	wl = wn;
		3526	}
		3527
		3528	if (types & (EV_TIMER | EV_STAT))
		3529	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3530	#if EV_STAT_ENABLE
		3531	/*TODO: timer is not always active*/
		3532	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3533	{
		3534	if (types & EV_STAT)
		3535	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3536	}
		3537	else
		3538	#endif
		3539	if (types & EV_TIMER)
		3540	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3541
		3542	#if EV_PERIODIC_ENABLE
		3543	if (types & EV_PERIODIC)
		3544	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3545	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3546	#endif
		3547
		3548	#if EV_IDLE_ENABLE
		3549	if (types & EV_IDLE)
		3550	for (j = NUMPRI; i--; )
		3551	for (i = idlecnt [j]; i--; )
		3552	cb (EV_A_ EV_IDLE, idles [j][i]);
		3553	#endif
		3554
		3555	#if EV_FORK_ENABLE
		3556	if (types & EV_FORK)
		3557	for (i = forkcnt; i--; )
		3558	if (ev_cb (forks [i]) != embed_fork_cb)
		3559	cb (EV_A_ EV_FORK, forks [i]);
		3560	#endif
		3561
		3562	#if EV_ASYNC_ENABLE
		3563	if (types & EV_ASYNC)
		3564	for (i = asynccnt; i--; )
		3565	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3566	#endif
		3567
		3568	if (types & EV_PREPARE)
		3569	for (i = preparecnt; i--; )
		3570	#if EV_EMBED_ENABLE
		3571	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3572	#endif
		3573	cb (EV_A_ EV_PREPARE, prepares [i]);
		3574
		3575	if (types & EV_CHECK)
		3576	for (i = checkcnt; i--; )
		3577	cb (EV_A_ EV_CHECK, checks [i]);
		3578
		3579	if (types & EV_SIGNAL)
		3580	for (i = 0; i < EV_NSIG - 1; ++i)
		3581	for (wl = signals [i].head; wl; )
		3582	{
		3583	wn = wl->next;
		3584	cb (EV_A_ EV_SIGNAL, wl);
		3585	wl = wn;
		3586	}
		3587
		3588	if (types & EV_CHILD)
		3589	for (i = EV_PID_HASHSIZE; i--; )
		3590	for (wl = childs [i]; wl; )
		3591	{
		3592	wn = wl->next;
		3593	cb (EV_A_ EV_CHILD, wl);
		3594	wl = wn;
		3595	}
		3596	/* EV_STAT 0x00001000 /* stat data changed */
		3597	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3598	}
		3599	#endif
		3600
3071	#if EV_MULTIPLICITY	3601	#if EV_MULTIPLICITY
3072	#include "ev_wrap.h"	3602	#include "ev_wrap.h"
3073	#endif	3603	#endif
3074		3604
3075	#ifdef __cplusplus	3605	#ifdef __cplusplus

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