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Comparing libev/ev.c (file contents):
Revision 1.255 by root, Mon Jun 9 14:11:30 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
…		…
154	#ifndef _WIN32	176	#ifndef _WIN32
155	# include <sys/time.h>	177	# include <sys/time.h>
156	# include <sys/wait.h>	178	# include <sys/wait.h>
157	# include <unistd.h>	179	# include <unistd.h>
158	#else	180	#else
		181	# include <io.h>
159	# define WIN32_LEAN_AND_MEAN	182	# define WIN32_LEAN_AND_MEAN
160	# include <windows.h>	183	# include <windows.h>
161	# ifndef EV_SELECT_IS_WINSOCKET	184	# ifndef EV_SELECT_IS_WINSOCKET
162	# define EV_SELECT_IS_WINSOCKET 1	185	# define EV_SELECT_IS_WINSOCKET 1
163	# endif	186	# endif
164	#endif	187	#endif
165		188
166	/* 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 */
		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
167		226
168	#ifndef EV_USE_MONOTONIC	227	#ifndef EV_USE_MONOTONIC
169	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0	228	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
170	# define EV_USE_MONOTONIC 1	229	# define EV_USE_MONOTONIC 1
171	# else	230	# else
172	# define EV_USE_MONOTONIC 0	231	# define EV_USE_MONOTONIC 0
173	# endif	232	# endif
174	#endif	233	#endif
175		234
176	#ifndef EV_USE_REALTIME	235	#ifndef EV_USE_REALTIME
177	# define EV_USE_REALTIME 0	236	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
178	#endif	237	#endif
179		238
180	#ifndef EV_USE_NANOSLEEP	239	#ifndef EV_USE_NANOSLEEP
181	# if _POSIX_C_SOURCE >= 199309L	240	# if _POSIX_C_SOURCE >= 199309L
182	# define EV_USE_NANOSLEEP 1	241	# define EV_USE_NANOSLEEP 1
…		…
243	# else	302	# else
244	# define EV_USE_EVENTFD 0	303	# define EV_USE_EVENTFD 0
245	# endif	304	# endif
246	#endif	305	#endif
247		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
248	#if 0 /* debugging */	315	#if 0 /* debugging */
249	# define EV_VERIFY 3	316	# define EV_VERIFY 3
250	# define EV_USE_4HEAP 1	317	# define EV_USE_4HEAP 1
251	# define EV_HEAP_CACHE_AT 1	318	# define EV_HEAP_CACHE_AT 1
252	#endif	319	#endif
…		…
261		328
262	#ifndef EV_HEAP_CACHE_AT	329	#ifndef EV_HEAP_CACHE_AT
263	# define EV_HEAP_CACHE_AT !EV_MINIMAL	330	# define EV_HEAP_CACHE_AT !EV_MINIMAL
264	#endif	331	#endif
265		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
266	/* 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 */
267		348
268	#ifndef CLOCK_MONOTONIC	349	#ifndef CLOCK_MONOTONIC
269	# undef EV_USE_MONOTONIC	350	# undef EV_USE_MONOTONIC
270	# define EV_USE_MONOTONIC 0	351	# define EV_USE_MONOTONIC 0
…		…
285	# include <sys/select.h>	366	# include <sys/select.h>
286	# endif	367	# endif
287	#endif	368	#endif
288		369
289	#if EV_USE_INOTIFY	370	#if EV_USE_INOTIFY
		371	# include <sys/utsname.h>
		372	# include <sys/statfs.h>
290	# include <sys/inotify.h>	373	# include <sys/inotify.h>
		374	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
		375	# ifndef IN_DONT_FOLLOW
		376	# undef EV_USE_INOTIFY
		377	# define EV_USE_INOTIFY 0
		378	# endif
291	#endif	379	#endif
292		380
293	#if EV_SELECT_IS_WINSOCKET	381	#if EV_SELECT_IS_WINSOCKET
294	# include <winsock.h>	382	# include <winsock.h>
295	#endif	383	#endif
296		384
297	#if EV_USE_EVENTFD	385	#if EV_USE_EVENTFD
298	/* 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 */
299	# 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
300	# ifdef __cplusplus	394	# ifdef __cplusplus
301	extern "C" {	395	extern "C" {
302	# endif	396	# endif
303	int eventfd (unsigned int initval, int flags);	397	int eventfd (unsigned int initval, int flags);
304	# ifdef __cplusplus	398	# ifdef __cplusplus
305	}	399	}
306	# endif	400	# endif
		401	#endif
		402
		403	#if EV_USE_SIGNALFD
		404	# include <sys/signalfd.h>
307	#endif	405	#endif
308		406
309	/**/	407	/**/
310		408
311	#if EV_VERIFY >= 3	409	#if EV_VERIFY >= 3
…		…
347	# define inline_speed static noinline	445	# define inline_speed static noinline
348	#else	446	#else
349	# define inline_speed static inline	447	# define inline_speed static inline
350	#endif	448	#endif
351		449
352	#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
353	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	455	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		456	#endif
354		457
355	#define EMPTY /* required for microsofts broken pseudo-c compiler */	458	#define EMPTY /* required for microsofts broken pseudo-c compiler */
356	#define EMPTY2(a,b) /* used to suppress some warnings */	459	#define EMPTY2(a,b) /* used to suppress some warnings */
357		460
358	typedef ev_watcher *W;	461	typedef ev_watcher *W;
…		…
360	typedef ev_watcher_time *WT;	463	typedef ev_watcher_time *WT;
361		464
362	#define ev_active(w) ((W)(w))->active	465	#define ev_active(w) ((W)(w))->active
363	#define ev_at(w) ((WT)(w))->at	466	#define ev_at(w) ((WT)(w))->at
364		467
365	#if EV_USE_MONOTONIC	468	#if EV_USE_REALTIME
366	/* 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 */
367	/* 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
368	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? */
369	#endif	476	#endif
370		477
371	#ifdef _WIN32	478	#ifdef _WIN32
372	# include "ev_win32.c"	479	# include "ev_win32.c"
…		…
381	{	488	{
382	syserr_cb = cb;	489	syserr_cb = cb;
383	}	490	}
384		491
385	static void noinline	492	static void noinline
386	syserr (const char *msg)	493	ev_syserr (const char *msg)
387	{	494	{
388	if (!msg)	495	if (!msg)
389	msg = "(libev) system error";	496	msg = "(libev) system error";
390		497
391	if (syserr_cb)	498	if (syserr_cb)
…		…
437	#define ev_malloc(size) ev_realloc (0, (size))	544	#define ev_malloc(size) ev_realloc (0, (size))
438	#define ev_free(ptr) ev_realloc ((ptr), 0)	545	#define ev_free(ptr) ev_realloc ((ptr), 0)
439		546
440	/*****************************************************************************/	547	/*****************************************************************************/
441		548
		549	/* set in reify when reification needed */
		550	#define EV_ANFD_REIFY 1
		551
		552	/* file descriptor info structure */
442	typedef struct	553	typedef struct
443	{	554	{
444	WL head;	555	WL head;
445	unsigned char events;	556	unsigned char events; /* the events watched for */
		557	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
		558	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
446	unsigned char reify;	559	unsigned char unused;
		560	#if EV_USE_EPOLL
		561	unsigned int egen; /* generation counter to counter epoll bugs */
		562	#endif
447	#if EV_SELECT_IS_WINSOCKET	563	#if EV_SELECT_IS_WINSOCKET
448	SOCKET handle;	564	SOCKET handle;
449	#endif	565	#endif
450	} ANFD;	566	} ANFD;
451		567
		568	/* stores the pending event set for a given watcher */
452	typedef struct	569	typedef struct
453	{	570	{
454	W w;	571	W w;
455	int events;	572	int events; /* the pending event set for the given watcher */
456	} ANPENDING;	573	} ANPENDING;
457		574
458	#if EV_USE_INOTIFY	575	#if EV_USE_INOTIFY
459	/* hash table entry per inotify-id */	576	/* hash table entry per inotify-id */
460	typedef struct	577	typedef struct
…		…
463	} ANFS;	580	} ANFS;
464	#endif	581	#endif
465		582
466	/* Heap Entry */	583	/* Heap Entry */
467	#if EV_HEAP_CACHE_AT	584	#if EV_HEAP_CACHE_AT
		585	/* a heap element */
468	typedef struct {	586	typedef struct {
469	ev_tstamp at;	587	ev_tstamp at;
470	WT w;	588	WT w;
471	} ANHE;	589	} ANHE;
472		590
473	#define ANHE_w(he) (he).w /* access watcher, read-write */	591	#define ANHE_w(he) (he).w /* access watcher, read-write */
474	#define ANHE_at(he) (he).at /* access cached at, read-only */	592	#define ANHE_at(he) (he).at /* access cached at, read-only */
475	#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 */
476	#else	594	#else
		595	/* a heap element */
477	typedef WT ANHE;	596	typedef WT ANHE;
478		597
479	#define ANHE_w(he) (he)	598	#define ANHE_w(he) (he)
480	#define ANHE_at(he) (he)->at	599	#define ANHE_at(he) (he)->at
481	#define ANHE_at_cache(he)	600	#define ANHE_at_cache(he)
…		…
505		624
506	static int ev_default_loop_ptr;	625	static int ev_default_loop_ptr;
507		626
508	#endif	627	#endif
509		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
510	/*****************************************************************************/	641	/*****************************************************************************/
511		642
		643	#ifndef EV_HAVE_EV_TIME
512	ev_tstamp	644	ev_tstamp
513	ev_time (void)	645	ev_time (void)
514	{	646	{
515	#if EV_USE_REALTIME	647	#if EV_USE_REALTIME
		648	if (expect_true (have_realtime))
		649	{
516	struct timespec ts;	650	struct timespec ts;
517	clock_gettime (CLOCK_REALTIME, &ts);	651	clock_gettime (CLOCK_REALTIME, &ts);
518	return ts.tv_sec + ts.tv_nsec * 1e-9;	652	return ts.tv_sec + ts.tv_nsec * 1e-9;
519	#else	653	}
		654	#endif
		655
520	struct timeval tv;	656	struct timeval tv;
521	gettimeofday (&tv, 0);	657	gettimeofday (&tv, 0);
522	return tv.tv_sec + tv.tv_usec * 1e-6;	658	return tv.tv_sec + tv.tv_usec * 1e-6;
523	#endif
524	}	659	}
		660	#endif
525		661
526	ev_tstamp inline_size	662	inline_size ev_tstamp
527	get_clock (void)	663	get_clock (void)
528	{	664	{
529	#if EV_USE_MONOTONIC	665	#if EV_USE_MONOTONIC
530	if (expect_true (have_monotonic))	666	if (expect_true (have_monotonic))
531	{	667	{
…		…
564	struct timeval tv;	700	struct timeval tv;
565		701
566	tv.tv_sec = (time_t)delay;	702	tv.tv_sec = (time_t)delay;
567	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	703	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
568		704
		705	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		706	/* something not guaranteed by newer posix versions, but guaranteed */
		707	/* by older ones */
569	select (0, 0, 0, 0, &tv);	708	select (0, 0, 0, 0, &tv);
570	#endif	709	#endif
571	}	710	}
572	}	711	}
573		712
574	/*****************************************************************************/	713	/*****************************************************************************/
575		714
576	#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 */
577		716
578	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
579	array_nextsize (int elem, int cur, int cnt)	720	array_nextsize (int elem, int cur, int cnt)
580	{	721	{
581	int ncur = cur + 1;	722	int ncur = cur + 1;
582		723
583	do	724	do
…		…
600	array_realloc (int elem, void *base, int *cur, int cnt)	741	array_realloc (int elem, void *base, int *cur, int cnt)
601	{	742	{
602	*cur = array_nextsize (elem, *cur, cnt);	743	*cur = array_nextsize (elem, *cur, cnt);
603	return ev_realloc (base, elem * *cur);	744	return ev_realloc (base, elem * *cur);
604	}	745	}
		746
		747	#define array_init_zero(base,count) \
		748	memset ((void *)(base), 0, sizeof (*(base)) * (count))
605		749
606	#define array_needsize(type,base,cur,cnt,init) \	750	#define array_needsize(type,base,cur,cnt,init) \
607	if (expect_false ((cnt) > (cur))) \	751	if (expect_false ((cnt) > (cur))) \
608	{ \	752	{ \
609	int ocur_ = (cur); \	753	int ocur_ = (cur); \
…		…
621	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	765	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
622	}	766	}
623	#endif	767	#endif
624		768
625	#define array_free(stem, idx) \	769	#define array_free(stem, idx) \
626	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
627		771
628	/*****************************************************************************/	772	/*****************************************************************************/
		773
		774	/* dummy callback for pending events */
		775	static void noinline
		776	pendingcb (EV_P_ ev_prepare *w, int revents)
		777	{
		778	}
629		779
630	void noinline	780	void noinline
631	ev_feed_event (EV_P_ void *w, int revents)	781	ev_feed_event (EV_P_ void *w, int revents)
632	{	782	{
633	W w_ = (W)w;	783	W w_ = (W)w;
…		…
642	pendings [pri][w_->pending - 1].w = w_;	792	pendings [pri][w_->pending - 1].w = w_;
643	pendings [pri][w_->pending - 1].events = revents;	793	pendings [pri][w_->pending - 1].events = revents;
644	}	794	}
645	}	795	}
646		796
647	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
648	queue_events (EV_P_ W *events, int eventcnt, int type)	813	queue_events (EV_P_ W *events, int eventcnt, int type)
649	{	814	{
650	int i;	815	int i;
651		816
652	for (i = 0; i < eventcnt; ++i)	817	for (i = 0; i < eventcnt; ++i)
653	ev_feed_event (EV_A_ events [i], type);	818	ev_feed_event (EV_A_ events [i], type);
654	}	819	}
655		820
656	/*****************************************************************************/	821	/*****************************************************************************/
657		822
658	void inline_size	823	inline_speed void
659	anfds_init (ANFD *base, int count)
660	{
661	while (count--)
662	{
663	base->head = 0;
664	base->events = EV_NONE;
665	base->reify = 0;
666
667	++base;
668	}
669	}
670
671	void inline_speed
672	fd_event (EV_P_ int fd, int revents)	824	fd_event_nc (EV_P_ int fd, int revents)
673	{	825	{
674	ANFD *anfd = anfds + fd;	826	ANFD *anfd = anfds + fd;
675	ev_io *w;	827	ev_io *w;
676		828
677	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)
…		…
681	if (ev)	833	if (ev)
682	ev_feed_event (EV_A_ (W)w, ev);	834	ev_feed_event (EV_A_ (W)w, ev);
683	}	835	}
684	}	836	}
685		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
686	void	849	void
687	ev_feed_fd_event (EV_P_ int fd, int revents)	850	ev_feed_fd_event (EV_P_ int fd, int revents)
688	{	851	{
689	if (fd >= 0 && fd < anfdmax)	852	if (fd >= 0 && fd < anfdmax)
690	fd_event (EV_A_ fd, revents);	853	fd_event_nc (EV_A_ fd, revents);
691	}	854	}
692		855
693	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
694	fd_reify (EV_P)	859	fd_reify (EV_P)
695	{	860	{
696	int i;	861	int i;
697		862
698	for (i = 0; i < fdchangecnt; ++i)	863	for (i = 0; i < fdchangecnt; ++i)
…		…
713	#ifdef EV_FD_TO_WIN32_HANDLE	878	#ifdef EV_FD_TO_WIN32_HANDLE
714	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	879	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
715	#else	880	#else
716	anfd->handle = _get_osfhandle (fd);	881	anfd->handle = _get_osfhandle (fd);
717	#endif	882	#endif
718	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));
719	}	884	}
720	#endif	885	#endif
721		886
722	{	887	{
723	unsigned char o_events = anfd->events;	888	unsigned char o_events = anfd->events;
724	unsigned char o_reify = anfd->reify;	889	unsigned char o_reify = anfd->reify;
725		890
726	anfd->reify = 0;	891	anfd->reify = 0;
727	anfd->events = events;	892	anfd->events = events;
728		893
729	if (o_events != events || o_reify & EV_IOFDSET)	894	if (o_events != events || o_reify & EV__IOFDSET)
730	backend_modify (EV_A_ fd, o_events, events);	895	backend_modify (EV_A_ fd, o_events, events);
731	}	896	}
732	}	897	}
733		898
734	fdchangecnt = 0;	899	fdchangecnt = 0;
735	}	900	}
736		901
737	void inline_size	902	/* something about the given fd changed */
		903	inline_size void
738	fd_change (EV_P_ int fd, int flags)	904	fd_change (EV_P_ int fd, int flags)
739	{	905	{
740	unsigned char reify = anfds [fd].reify;	906	unsigned char reify = anfds [fd].reify;
741	anfds [fd].reify |= flags;	907	anfds [fd].reify |= flags;
742		908
…		…
746	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	912	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
747	fdchanges [fdchangecnt - 1] = fd;	913	fdchanges [fdchangecnt - 1] = fd;
748	}	914	}
749	}	915	}
750		916
751	void inline_speed	917	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		918	inline_speed void
752	fd_kill (EV_P_ int fd)	919	fd_kill (EV_P_ int fd)
753	{	920	{
754	ev_io *w;	921	ev_io *w;
755		922
756	while ((w = (ev_io *)anfds [fd].head))	923	while ((w = (ev_io *)anfds [fd].head))
…		…
758	ev_io_stop (EV_A_ w);	925	ev_io_stop (EV_A_ w);
759	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);
760	}	927	}
761	}	928	}
762		929
763	int inline_size	930	/* check whether the given fd is atcually valid, for error recovery */
		931	inline_size int
764	fd_valid (int fd)	932	fd_valid (int fd)
765	{	933	{
766	#ifdef _WIN32	934	#ifdef _WIN32
767	return _get_osfhandle (fd) != -1;	935	return _get_osfhandle (fd) != -1;
768	#else	936	#else
…		…
804		972
805	for (fd = 0; fd < anfdmax; ++fd)	973	for (fd = 0; fd < anfdmax; ++fd)
806	if (anfds [fd].events)	974	if (anfds [fd].events)
807	{	975	{
808	anfds [fd].events = 0;	976	anfds [fd].events = 0;
		977	anfds [fd].emask = 0;
809	fd_change (EV_A_ fd, EV_IOFDSET | 1);	978	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
810	}	979	}
811	}	980	}
812		981
813	/*****************************************************************************/	982	/*****************************************************************************/
814		983
…		…
830	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	999	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
831	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)	1000	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
832	#define UPHEAP_DONE(p,k) ((p) == (k))	1001	#define UPHEAP_DONE(p,k) ((p) == (k))
833		1002
834	/* away from the root */	1003	/* away from the root */
835	void inline_speed	1004	inline_speed void
836	downheap (ANHE *heap, int N, int k)	1005	downheap (ANHE *heap, int N, int k)
837	{	1006	{
838	ANHE he = heap [k];	1007	ANHE he = heap [k];
839	ANHE *E = heap + N + HEAP0;	1008	ANHE *E = heap + N + HEAP0;
840		1009
…		…
880	#define HEAP0 1	1049	#define HEAP0 1
881	#define HPARENT(k) ((k) >> 1)	1050	#define HPARENT(k) ((k) >> 1)
882	#define UPHEAP_DONE(p,k) (!(p))	1051	#define UPHEAP_DONE(p,k) (!(p))
883		1052
884	/* away from the root */	1053	/* away from the root */
885	void inline_speed	1054	inline_speed void
886	downheap (ANHE *heap, int N, int k)	1055	downheap (ANHE *heap, int N, int k)
887	{	1056	{
888	ANHE he = heap [k];	1057	ANHE he = heap [k];
889		1058
890	for (;;)	1059	for (;;)
…		…
910	ev_active (ANHE_w (he)) = k;	1079	ev_active (ANHE_w (he)) = k;
911	}	1080	}
912	#endif	1081	#endif
913		1082
914	/* towards the root */	1083	/* towards the root */
915	void inline_speed	1084	inline_speed void
916	upheap (ANHE *heap, int k)	1085	upheap (ANHE *heap, int k)
917	{	1086	{
918	ANHE he = heap [k];	1087	ANHE he = heap [k];
919		1088
920	for (;;)	1089	for (;;)
…		…
931		1100
932	heap [k] = he;	1101	heap [k] = he;
933	ev_active (ANHE_w (he)) = k;	1102	ev_active (ANHE_w (he)) = k;
934	}	1103	}
935		1104
936	void inline_size	1105	/* move an element suitably so it is in a correct place */
		1106	inline_size void
937	adjustheap (ANHE *heap, int N, int k)	1107	adjustheap (ANHE *heap, int N, int k)
938	{	1108	{
939	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]))
940	upheap (heap, k);	1110	upheap (heap, k);
941	else	1111	else
942	downheap (heap, N, k);	1112	downheap (heap, N, k);
943	}	1113	}
944		1114
945	/* 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 */
946	void inline_size	1116	inline_size void
947	reheap (ANHE *heap, int N)	1117	reheap (ANHE *heap, int N)
948	{	1118	{
949	int i;	1119	int i;
950		1120
951	/* 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 */
…		…
954	upheap (heap, i + HEAP0);	1124	upheap (heap, i + HEAP0);
955	}	1125	}
956		1126
957	/*****************************************************************************/	1127	/*****************************************************************************/
958		1128
		1129	/* associate signal watchers to a signal signal */
959	typedef struct	1130	typedef struct
960	{	1131	{
		1132	#if EV_MULTIPLICITY
		1133	EV_P;
		1134	#endif
961	WL head;	1135	WL head;
962	EV_ATOMIC_T gotsig;	1136	EV_ATOMIC_T gotsig;
963	} ANSIG;	1137	} ANSIG;
964		1138
965	static ANSIG *signals;	1139	static ANSIG signals [EV_NSIG - 1];
966	static int signalmax;
967
968	static EV_ATOMIC_T gotsig;	1140	static EV_ATOMIC_T gotsig;
969		1141
970	void inline_size
971	signals_init (ANSIG *base, int count)
972	{
973	while (count--)
974	{
975	base->head = 0;
976	base->gotsig = 0;
977
978	++base;
979	}
980	}
981
982	/*****************************************************************************/	1142	/*****************************************************************************/
983		1143
984	void inline_speed	1144	/* used to prepare libev internal fd's */
		1145	/* this is not fork-safe */
		1146	inline_speed void
985	fd_intern (int fd)	1147	fd_intern (int fd)
986	{	1148	{
987	#ifdef _WIN32	1149	#ifdef _WIN32
988	unsigned long arg = 1;	1150	unsigned long arg = 1;
989	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1151	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
994	}	1156	}
995		1157
996	static void noinline	1158	static void noinline
997	evpipe_init (EV_P)	1159	evpipe_init (EV_P)
998	{	1160	{
999	if (!ev_is_active (&pipeev))	1161	if (!ev_is_active (&pipe_w))
1000	{	1162	{
1001	#if EV_USE_EVENTFD	1163	#if EV_USE_EVENTFD
		1164	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1165	if (evfd < 0 && errno == EINVAL)
1002	if ((evfd = eventfd (0, 0)) >= 0)	1166	evfd = eventfd (0, 0);
		1167
		1168	if (evfd >= 0)
1003	{	1169	{
1004	evpipe [0] = -1;	1170	evpipe [0] = -1;
1005	fd_intern (evfd);	1171	fd_intern (evfd); /* doing it twice doesn't hurt */
1006	ev_io_set (&pipeev, evfd, EV_READ);	1172	ev_io_set (&pipe_w, evfd, EV_READ);
1007	}	1173	}
1008	else	1174	else
1009	#endif	1175	#endif
1010	{	1176	{
1011	while (pipe (evpipe))	1177	while (pipe (evpipe))
1012	syserr ("(libev) error creating signal/async pipe");	1178	ev_syserr ("(libev) error creating signal/async pipe");
1013		1179
1014	fd_intern (evpipe [0]);	1180	fd_intern (evpipe [0]);
1015	fd_intern (evpipe [1]);	1181	fd_intern (evpipe [1]);
1016	ev_io_set (&pipeev, evpipe [0], EV_READ);	1182	ev_io_set (&pipe_w, evpipe [0], EV_READ);
1017	}	1183	}
1018		1184
1019	ev_io_start (EV_A_ &pipeev);	1185	ev_io_start (EV_A_ &pipe_w);
1020	ev_unref (EV_A); /* watcher should not keep loop alive */	1186	ev_unref (EV_A); /* watcher should not keep loop alive */
1021	}	1187	}
1022	}	1188	}
1023		1189
1024	void inline_size	1190	inline_size void
1025	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1191	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1026	{	1192	{
1027	if (!*flag)	1193	if (!*flag)
1028	{	1194	{
1029	int old_errno = errno; /* save errno because write might clobber it */	1195	int old_errno = errno; /* save errno because write might clobber it */
…		…
1042		1208
1043	errno = old_errno;	1209	errno = old_errno;
1044	}	1210	}
1045	}	1211	}
1046		1212
		1213	/* called whenever the libev signal pipe */
		1214	/* got some events (signal, async) */
1047	static void	1215	static void
1048	pipecb (EV_P_ ev_io *iow, int revents)	1216	pipecb (EV_P_ ev_io *iow, int revents)
1049	{	1217	{
1050	#if EV_USE_EVENTFD	1218	#if EV_USE_EVENTFD
1051	if (evfd >= 0)	1219	if (evfd >= 0)
…		…
1063	if (gotsig && ev_is_default_loop (EV_A))	1231	if (gotsig && ev_is_default_loop (EV_A))
1064	{	1232	{
1065	int signum;	1233	int signum;
1066	gotsig = 0;	1234	gotsig = 0;
1067		1235
1068	for (signum = signalmax; signum--; )	1236	for (signum = EV_NSIG - 1; signum--; )
1069	if (signals [signum].gotsig)	1237	if (signals [signum].gotsig)
1070	ev_feed_signal_event (EV_A_ signum + 1);	1238	ev_feed_signal_event (EV_A_ signum + 1);
1071	}	1239	}
1072		1240
1073	#if EV_ASYNC_ENABLE	1241	#if EV_ASYNC_ENABLE
…		…
1090		1258
1091	static void	1259	static void
1092	ev_sighandler (int signum)	1260	ev_sighandler (int signum)
1093	{	1261	{
1094	#if EV_MULTIPLICITY	1262	#if EV_MULTIPLICITY
1095	struct ev_loop *loop = &default_loop_struct;	1263	EV_P = signals [signum - 1].loop;
1096	#endif	1264	#endif
1097		1265
1098	#if _WIN32	1266	#if _WIN32
1099	signal (signum, ev_sighandler);	1267	signal (signum, ev_sighandler);
1100	#endif	1268	#endif
…		…
1107	ev_feed_signal_event (EV_P_ int signum)	1275	ev_feed_signal_event (EV_P_ int signum)
1108	{	1276	{
1109	WL w;	1277	WL w;
1110		1278
1111	#if EV_MULTIPLICITY	1279	#if EV_MULTIPLICITY
1112	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));
1113	#endif	1281	#endif
		1282
		1283	if (signum <= 0 || signum > EV_NSIG)
		1284	return;
1114		1285
1115	--signum;	1286	--signum;
1116
1117	if (signum < 0 || signum >= signalmax)
1118	return;
1119		1287
1120	signals [signum].gotsig = 0;	1288	signals [signum].gotsig = 0;
1121		1289
1122	for (w = signals [signum].head; w; w = w->next)	1290	for (w = signals [signum].head; w; w = w->next)
1123	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1291	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1124	}	1292	}
1125		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
1126	/*****************************************************************************/	1314	/*****************************************************************************/
1127		1315
1128	static WL childs [EV_PID_HASHSIZE];	1316	static WL childs [EV_PID_HASHSIZE];
1129		1317
1130	#ifndef _WIN32	1318	#ifndef _WIN32
…		…
1133		1321
1134	#ifndef WIFCONTINUED	1322	#ifndef WIFCONTINUED
1135	# define WIFCONTINUED(status) 0	1323	# define WIFCONTINUED(status) 0
1136	#endif	1324	#endif
1137		1325
1138	void inline_speed	1326	/* handle a single child status event */
		1327	inline_speed void
1139	child_reap (EV_P_ int chain, int pid, int status)	1328	child_reap (EV_P_ int chain, int pid, int status)
1140	{	1329	{
1141	ev_child *w;	1330	ev_child *w;
1142	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1331	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1143		1332
…		…
1156		1345
1157	#ifndef WCONTINUED	1346	#ifndef WCONTINUED
1158	# define WCONTINUED 0	1347	# define WCONTINUED 0
1159	#endif	1348	#endif
1160		1349
		1350	/* called on sigchld etc., calls waitpid */
1161	static void	1351	static void
1162	childcb (EV_P_ ev_signal *sw, int revents)	1352	childcb (EV_P_ ev_signal *sw, int revents)
1163	{	1353	{
1164	int pid, status;	1354	int pid, status;
1165		1355
…		…
1246	/* kqueue is borked on everything but netbsd apparently */	1436	/* kqueue is borked on everything but netbsd apparently */
1247	/* 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 */
1248	flags &= ~EVBACKEND_KQUEUE;	1438	flags &= ~EVBACKEND_KQUEUE;
1249	#endif	1439	#endif
1250	#ifdef __APPLE__	1440	#ifdef __APPLE__
1251	// flags &= ~EVBACKEND_KQUEUE; for documentation	1441	/* only select works correctly on that "unix-certified" platform */
1252	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 */
1253	#endif	1444	#endif
1254		1445
1255	return flags;	1446	return flags;
1256	}	1447	}
1257		1448
…		…
1271	ev_backend (EV_P)	1462	ev_backend (EV_P)
1272	{	1463	{
1273	return backend;	1464	return backend;
1274	}	1465	}
1275		1466
		1467	#if EV_MINIMAL < 2
1276	unsigned int	1468	unsigned int
1277	ev_loop_count (EV_P)	1469	ev_loop_count (EV_P)
1278	{	1470	{
1279	return loop_count;	1471	return loop_count;
1280	}	1472	}
1281		1473
		1474	unsigned int
		1475	ev_loop_depth (EV_P)
		1476	{
		1477	return loop_depth;
		1478	}
		1479
1282	void	1480	void
1283	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1481	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1284	{	1482	{
1285	io_blocktime = interval;	1483	io_blocktime = interval;
1286	}	1484	}
…		…
1289	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1487	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1290	{	1488	{
1291	timeout_blocktime = interval;	1489	timeout_blocktime = interval;
1292	}	1490	}
1293		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 */
1294	static void noinline	1517	static void noinline
1295	loop_init (EV_P_ unsigned int flags)	1518	loop_init (EV_P_ unsigned int flags)
1296	{	1519	{
1297	if (!backend)	1520	if (!backend)
1298	{	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
1299	#if EV_USE_MONOTONIC	1532	#if EV_USE_MONOTONIC
		1533	if (!have_monotonic)
1300	{	1534	{
1301	struct timespec ts;	1535	struct timespec ts;
		1536
1302	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1537	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1303	have_monotonic = 1;	1538	have_monotonic = 1;
1304	}	1539	}
1305	#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"));
1306		1552
1307	ev_rt_now = ev_time ();	1553	ev_rt_now = ev_time ();
1308	mn_now = get_clock ();	1554	mn_now = get_clock ();
1309	now_floor = mn_now;	1555	now_floor = mn_now;
1310	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
1311		1560
1312	io_blocktime = 0.;	1561	io_blocktime = 0.;
1313	timeout_blocktime = 0.;	1562	timeout_blocktime = 0.;
1314	backend = 0;	1563	backend = 0;
1315	backend_fd = -1;	1564	backend_fd = -1;
1316	gotasync = 0;	1565	gotasync = 0;
1317	#if EV_USE_INOTIFY	1566	#if EV_USE_INOTIFY
1318	fs_fd = -2;	1567	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1319	#endif	1568	#endif
1320		1569	#if EV_USE_SIGNALFD
1321	/* pid check not overridable via env */	1570	sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2;
1322	#ifndef _WIN32
1323	if (flags & EVFLAG_FORKCHECK)
1324	curpid = getpid ();
1325	#endif	1571	#endif
1326
1327	if (!(flags & EVFLAG_NOENV)
1328	&& !enable_secure ()
1329	&& getenv ("LIBEV_FLAGS"))
1330	flags = atoi (getenv ("LIBEV_FLAGS"));
1331		1572
1332	if (!(flags & 0x0000ffffU))	1573	if (!(flags & 0x0000ffffU))
1333	flags |= ev_recommended_backends ();	1574	flags |= ev_recommended_backends ();
1334		1575
1335	#if EV_USE_PORT	1576	#if EV_USE_PORT
…		…
1346	#endif	1587	#endif
1347	#if EV_USE_SELECT	1588	#if EV_USE_SELECT
1348	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1589	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1349	#endif	1590	#endif
1350		1591
		1592	ev_prepare_init (&pending_w, pendingcb);
		1593
1351	ev_init (&pipeev, pipecb);	1594	ev_init (&pipe_w, pipecb);
1352	ev_set_priority (&pipeev, EV_MAXPRI);	1595	ev_set_priority (&pipe_w, EV_MAXPRI);
1353	}	1596	}
1354	}	1597	}
1355		1598
		1599	/* free up a loop structure */
1356	static void noinline	1600	static void noinline
1357	loop_destroy (EV_P)	1601	loop_destroy (EV_P)
1358	{	1602	{
1359	int i;	1603	int i;
1360		1604
1361	if (ev_is_active (&pipeev))	1605	if (ev_is_active (&pipe_w))
1362	{	1606	{
1363	ev_ref (EV_A); /* signal watcher */	1607	/*ev_ref (EV_A);*/
1364	ev_io_stop (EV_A_ &pipeev);	1608	/*ev_io_stop (EV_A_ &pipe_w);*/
1365		1609
1366	#if EV_USE_EVENTFD	1610	#if EV_USE_EVENTFD
1367	if (evfd >= 0)	1611	if (evfd >= 0)
1368	close (evfd);	1612	close (evfd);
1369	#endif	1613	#endif
…		…
1373	close (evpipe [0]);	1617	close (evpipe [0]);
1374	close (evpipe [1]);	1618	close (evpipe [1]);
1375	}	1619	}
1376	}	1620	}
1377		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
1378	#if EV_USE_INOTIFY	1632	#if EV_USE_INOTIFY
1379	if (fs_fd >= 0)	1633	if (fs_fd >= 0)
1380	close (fs_fd);	1634	close (fs_fd);
1381	#endif	1635	#endif
1382		1636
…		…
1405	#if EV_IDLE_ENABLE	1659	#if EV_IDLE_ENABLE
1406	array_free (idle, [i]);	1660	array_free (idle, [i]);
1407	#endif	1661	#endif
1408	}	1662	}
1409		1663
1410	ev_free (anfds); anfdmax = 0;	1664	ev_free (anfds); anfds = 0; anfdmax = 0;
1411		1665
1412	/* 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);
1413	array_free (fdchange, EMPTY);	1668	array_free (fdchange, EMPTY);
1414	array_free (timer, EMPTY);	1669	array_free (timer, EMPTY);
1415	#if EV_PERIODIC_ENABLE	1670	#if EV_PERIODIC_ENABLE
1416	array_free (periodic, EMPTY);	1671	array_free (periodic, EMPTY);
1417	#endif	1672	#endif
…		…
1426		1681
1427	backend = 0;	1682	backend = 0;
1428	}	1683	}
1429		1684
1430	#if EV_USE_INOTIFY	1685	#if EV_USE_INOTIFY
1431	void inline_size infy_fork (EV_P);	1686	inline_size void infy_fork (EV_P);
1432	#endif	1687	#endif
1433		1688
1434	void inline_size	1689	inline_size void
1435	loop_fork (EV_P)	1690	loop_fork (EV_P)
1436	{	1691	{
1437	#if EV_USE_PORT	1692	#if EV_USE_PORT
1438	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1693	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1439	#endif	1694	#endif
…		…
1445	#endif	1700	#endif
1446	#if EV_USE_INOTIFY	1701	#if EV_USE_INOTIFY
1447	infy_fork (EV_A);	1702	infy_fork (EV_A);
1448	#endif	1703	#endif
1449		1704
1450	if (ev_is_active (&pipeev))	1705	if (ev_is_active (&pipe_w))
1451	{	1706	{
1452	/* this "locks" the handlers against writing to the pipe */	1707	/* this "locks" the handlers against writing to the pipe */
1453	/* while we modify the fd vars */	1708	/* while we modify the fd vars */
1454	gotsig = 1;	1709	gotsig = 1;
1455	#if EV_ASYNC_ENABLE	1710	#if EV_ASYNC_ENABLE
1456	gotasync = 1;	1711	gotasync = 1;
1457	#endif	1712	#endif
1458		1713
1459	ev_ref (EV_A);	1714	ev_ref (EV_A);
1460	ev_io_stop (EV_A_ &pipeev);	1715	ev_io_stop (EV_A_ &pipe_w);
1461		1716
1462	#if EV_USE_EVENTFD	1717	#if EV_USE_EVENTFD
1463	if (evfd >= 0)	1718	if (evfd >= 0)
1464	close (evfd);	1719	close (evfd);
1465	#endif	1720	#endif
…		…
1470	close (evpipe [1]);	1725	close (evpipe [1]);
1471	}	1726	}
1472		1727
1473	evpipe_init (EV_A);	1728	evpipe_init (EV_A);
1474	/* now iterate over everything, in case we missed something */	1729	/* now iterate over everything, in case we missed something */
1475	pipecb (EV_A_ &pipeev, EV_READ);	1730	pipecb (EV_A_ &pipe_w, EV_READ);
1476	}	1731	}
1477		1732
1478	postfork = 0;	1733	postfork = 0;
1479	}	1734	}
1480		1735
1481	#if EV_MULTIPLICITY	1736	#if EV_MULTIPLICITY
1482		1737
1483	struct ev_loop *	1738	struct ev_loop *
1484	ev_loop_new (unsigned int flags)	1739	ev_loop_new (unsigned int flags)
1485	{	1740	{
1486	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));
1487		1742
1488	memset (loop, 0, sizeof (struct ev_loop));	1743	memset (EV_A, 0, sizeof (struct ev_loop));
1489
1490	loop_init (EV_A_ flags);	1744	loop_init (EV_A_ flags);
1491		1745
1492	if (ev_backend (EV_A))	1746	if (ev_backend (EV_A))
1493	return loop;	1747	return EV_A;
1494		1748
1495	return 0;	1749	return 0;
1496	}	1750	}
1497		1751
1498	void	1752	void
…		…
1505	void	1759	void
1506	ev_loop_fork (EV_P)	1760	ev_loop_fork (EV_P)
1507	{	1761	{
1508	postfork = 1; /* must be in line with ev_default_fork */	1762	postfork = 1; /* must be in line with ev_default_fork */
1509	}	1763	}
		1764	#endif /* multiplicity */
1510		1765
1511	#if EV_VERIFY	1766	#if EV_VERIFY
1512	void noinline	1767	static void noinline
1513	verify_watcher (EV_P_ W w)	1768	verify_watcher (EV_P_ W w)
1514	{	1769	{
1515	assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));	1770	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1516		1771
1517	if (w->pending)	1772	if (w->pending)
1518	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));
1519	}	1774	}
1520		1775
1521	static void noinline	1776	static void noinline
1522	verify_heap (EV_P_ ANHE *heap, int N)	1777	verify_heap (EV_P_ ANHE *heap, int N)
1523	{	1778	{
1524	int i;	1779	int i;
1525		1780
1526	for (i = HEAP0; i < N + HEAP0; ++i)	1781	for (i = HEAP0; i < N + HEAP0; ++i)
1527	{	1782	{
1528	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));
1529	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])));
1530	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]))));
1531		1786
1532	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));	1787	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1533	}	1788	}
1534	}	1789	}
1535		1790
1536	static void noinline	1791	static void noinline
1537	array_verify (EV_P_ W *ws, int cnt)	1792	array_verify (EV_P_ W *ws, int cnt)
1538	{	1793	{
1539	while (cnt--)	1794	while (cnt--)
1540	{	1795	{
1541	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));	1796	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1542	verify_watcher (EV_A_ ws [cnt]);	1797	verify_watcher (EV_A_ ws [cnt]);
1543	}	1798	}
1544	}	1799	}
1545	#endif	1800	#endif
1546		1801
		1802	#if EV_MINIMAL < 2
1547	void	1803	void
1548	ev_loop_verify (EV_P)	1804	ev_loop_verify (EV_P)
1549	{	1805	{
1550	#if EV_VERIFY	1806	#if EV_VERIFY
1551	int i;	1807	int i;
…		…
1553		1809
1554	assert (activecnt >= -1);	1810	assert (activecnt >= -1);
1555		1811
1556	assert (fdchangemax >= fdchangecnt);	1812	assert (fdchangemax >= fdchangecnt);
1557	for (i = 0; i < fdchangecnt; ++i)	1813	for (i = 0; i < fdchangecnt; ++i)
1558	assert (("negative fd in fdchanges", fdchanges [i] >= 0));	1814	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1559		1815
1560	assert (anfdmax >= 0);	1816	assert (anfdmax >= 0);
1561	for (i = 0; i < anfdmax; ++i)	1817	for (i = 0; i < anfdmax; ++i)
1562	for (w = anfds [i].head; w; w = w->next)	1818	for (w = anfds [i].head; w; w = w->next)
1563	{	1819	{
1564	verify_watcher (EV_A_ (W)w);	1820	verify_watcher (EV_A_ (W)w);
1565	assert (("inactive fd watcher on anfd list", ev_active (w) == 1));	1821	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1566	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));
1567	}	1823	}
1568		1824
1569	assert (timermax >= timercnt);	1825	assert (timermax >= timercnt);
1570	verify_heap (EV_A_ timers, timercnt);	1826	verify_heap (EV_A_ timers, timercnt);
1571		1827
…		…
1600	assert (checkmax >= checkcnt);	1856	assert (checkmax >= checkcnt);
1601	array_verify (EV_A_ (W *)checks, checkcnt);	1857	array_verify (EV_A_ (W *)checks, checkcnt);
1602		1858
1603	# if 0	1859	# if 0
1604	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)
1605	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)	1861	for (signum = EV_NSIG; signum--; ) if (signals [signum].gotsig)
1606	# endif	1862	# endif
1607	#endif	1863	#endif
1608	}	1864	}
1609		1865	#endif
1610	#endif /* multiplicity */
1611		1866
1612	#if EV_MULTIPLICITY	1867	#if EV_MULTIPLICITY
1613	struct ev_loop *	1868	struct ev_loop *
1614	ev_default_loop_init (unsigned int flags)	1869	ev_default_loop_init (unsigned int flags)
1615	#else	1870	#else
…		…
1618	#endif	1873	#endif
1619	{	1874	{
1620	if (!ev_default_loop_ptr)	1875	if (!ev_default_loop_ptr)
1621	{	1876	{
1622	#if EV_MULTIPLICITY	1877	#if EV_MULTIPLICITY
1623	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1878	EV_P = ev_default_loop_ptr = &default_loop_struct;
1624	#else	1879	#else
1625	ev_default_loop_ptr = 1;	1880	ev_default_loop_ptr = 1;
1626	#endif	1881	#endif
1627		1882
1628	loop_init (EV_A_ flags);	1883	loop_init (EV_A_ flags);
…		…
1645		1900
1646	void	1901	void
1647	ev_default_destroy (void)	1902	ev_default_destroy (void)
1648	{	1903	{
1649	#if EV_MULTIPLICITY	1904	#if EV_MULTIPLICITY
1650	struct ev_loop *loop = ev_default_loop_ptr;	1905	EV_P = ev_default_loop_ptr;
1651	#endif	1906	#endif
		1907
		1908	ev_default_loop_ptr = 0;
1652		1909
1653	#ifndef _WIN32	1910	#ifndef _WIN32
1654	ev_ref (EV_A); /* child watcher */	1911	ev_ref (EV_A); /* child watcher */
1655	ev_signal_stop (EV_A_ &childev);	1912	ev_signal_stop (EV_A_ &childev);
1656	#endif	1913	#endif
…		…
1660		1917
1661	void	1918	void
1662	ev_default_fork (void)	1919	ev_default_fork (void)
1663	{	1920	{
1664	#if EV_MULTIPLICITY	1921	#if EV_MULTIPLICITY
1665	struct ev_loop *loop = ev_default_loop_ptr;	1922	EV_P = ev_default_loop_ptr;
1666	#endif	1923	#endif
1667		1924
1668	if (backend)
1669	postfork = 1; /* must be in line with ev_loop_fork */	1925	postfork = 1; /* must be in line with ev_loop_fork */
1670	}	1926	}
1671		1927
1672	/*****************************************************************************/	1928	/*****************************************************************************/
1673		1929
1674	void	1930	void
1675	ev_invoke (EV_P_ void *w, int revents)	1931	ev_invoke (EV_P_ void *w, int revents)
1676	{	1932	{
1677	EV_CB_INVOKE ((W)w, revents);	1933	EV_CB_INVOKE ((W)w, revents);
1678	}	1934	}
1679		1935
1680	void inline_speed	1936	unsigned int
1681	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)
1682	{	1950	{
1683	int pri;	1951	int pri;
1684		1952
1685	for (pri = NUMPRI; pri--; )	1953	for (pri = NUMPRI; pri--; )
1686	while (pendingcnt [pri])	1954	while (pendingcnt [pri])
1687	{	1955	{
1688	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1956	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1689		1957
1690	if (expect_true (p->w))
1691	{
1692	/*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 */
1693		1960
1694	p->w->pending = 0;	1961	p->w->pending = 0;
1695	EV_CB_INVOKE (p->w, p->events);	1962	EV_CB_INVOKE (p->w, p->events);
1696	EV_FREQUENT_CHECK;	1963	EV_FREQUENT_CHECK;
1697	}
1698	}	1964	}
1699	}	1965	}
1700		1966
1701	#if EV_IDLE_ENABLE	1967	#if EV_IDLE_ENABLE
1702	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
1703	idle_reify (EV_P)	1971	idle_reify (EV_P)
1704	{	1972	{
1705	if (expect_false (idleall))	1973	if (expect_false (idleall))
1706	{	1974	{
1707	int pri;	1975	int pri;
…		…
1719	}	1987	}
1720	}	1988	}
1721	}	1989	}
1722	#endif	1990	#endif
1723		1991
1724	void inline_size	1992	/* make timers pending */
		1993	inline_size void
1725	timers_reify (EV_P)	1994	timers_reify (EV_P)
1726	{	1995	{
1727	EV_FREQUENT_CHECK;	1996	EV_FREQUENT_CHECK;
1728		1997
1729	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	1998	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1730	{	1999	{
1731	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	2000	do
1732
1733	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1734
1735	/* first reschedule or stop timer */
1736	if (w->repeat)
1737	{	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	{
1738	ev_at (w) += w->repeat;	2009	ev_at (w) += w->repeat;
1739	if (ev_at (w) < mn_now)	2010	if (ev_at (w) < mn_now)
1740	ev_at (w) = mn_now;	2011	ev_at (w) = mn_now;
1741		2012
1742	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.));
1743		2014
1744	ANHE_at_cache (timers [HEAP0]);	2015	ANHE_at_cache (timers [HEAP0]);
1745	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);
1746	}	2023	}
1747	else	2024	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1748	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1749		2025
1750	EV_FREQUENT_CHECK;
1751	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	2026	feed_reverse_done (EV_A_ EV_TIMEOUT);
1752	}	2027	}
1753	}	2028	}
1754		2029
1755	#if EV_PERIODIC_ENABLE	2030	#if EV_PERIODIC_ENABLE
1756	void inline_size	2031	/* make periodics pending */
		2032	inline_size void
1757	periodics_reify (EV_P)	2033	periodics_reify (EV_P)
1758	{	2034	{
1759	EV_FREQUENT_CHECK;	2035	EV_FREQUENT_CHECK;
1760		2036
1761	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	2037	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1762	{	2038	{
1763	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	2039	int feed_count = 0;
1764		2040
1765	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	2041	do
1766
1767	/* first reschedule or stop timer */
1768	if (w->reschedule_cb)
1769	{	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	{
1770	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2050	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1771		2051
1772	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));
1773		2053
1774	ANHE_at_cache (periodics [HEAP0]);	2054	ANHE_at_cache (periodics [HEAP0]);
1775	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);
1776	}	2081	}
1777	else if (w->interval)	2082	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1778	{
1779	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1780	/* if next trigger time is not sufficiently in the future, put it there */
1781	/* this might happen because of floating point inexactness */
1782	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1783	{
1784	ev_at (w) += w->interval;
1785		2083
1786	/* if interval is unreasonably low we might still have a time in the past */
1787	/* so correct this. this will make the periodic very inexact, but the user */
1788	/* has effectively asked to get triggered more often than possible */
1789	if (ev_at (w) < ev_rt_now)
1790	ev_at (w) = ev_rt_now;
1791	}
1792
1793	ANHE_at_cache (periodics [HEAP0]);
1794	downheap (periodics, periodiccnt, HEAP0);
1795	}
1796	else
1797	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1798
1799	EV_FREQUENT_CHECK;
1800	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	2084	feed_reverse_done (EV_A_ EV_PERIODIC);
1801	}	2085	}
1802	}	2086	}
1803		2087
		2088	/* simply recalculate all periodics */
		2089	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1804	static void noinline	2090	static void noinline
1805	periodics_reschedule (EV_P)	2091	periodics_reschedule (EV_P)
1806	{	2092	{
1807	int i;	2093	int i;
1808		2094
…		…
1821		2107
1822	reheap (periodics, periodiccnt);	2108	reheap (periodics, periodiccnt);
1823	}	2109	}
1824	#endif	2110	#endif
1825		2111
1826	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
1827	time_update (EV_P_ ev_tstamp max_block)	2129	time_update (EV_P_ ev_tstamp max_block)
1828	{	2130	{
1829	int i;
1830
1831	#if EV_USE_MONOTONIC	2131	#if EV_USE_MONOTONIC
1832	if (expect_true (have_monotonic))	2132	if (expect_true (have_monotonic))
1833	{	2133	{
		2134	int i;
1834	ev_tstamp odiff = rtmn_diff;	2135	ev_tstamp odiff = rtmn_diff;
1835		2136
1836	mn_now = get_clock ();	2137	mn_now = get_clock ();
1837		2138
1838	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2139	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1864	ev_rt_now = ev_time ();	2165	ev_rt_now = ev_time ();
1865	mn_now = get_clock ();	2166	mn_now = get_clock ();
1866	now_floor = mn_now;	2167	now_floor = mn_now;
1867	}	2168	}
1868		2169
		2170	/* no timer adjustment, as the monotonic clock doesn't jump */
		2171	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1869	# if EV_PERIODIC_ENABLE	2172	# if EV_PERIODIC_ENABLE
1870	periodics_reschedule (EV_A);	2173	periodics_reschedule (EV_A);
1871	# endif	2174	# endif
1872	/* no timer adjustment, as the monotonic clock doesn't jump */
1873	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1874	}	2175	}
1875	else	2176	else
1876	#endif	2177	#endif
1877	{	2178	{
1878	ev_rt_now = ev_time ();	2179	ev_rt_now = ev_time ();
1879		2180
1880	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))
1881	{	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);
1882	#if EV_PERIODIC_ENABLE	2185	#if EV_PERIODIC_ENABLE
1883	periodics_reschedule (EV_A);	2186	periodics_reschedule (EV_A);
1884	#endif	2187	#endif
1885	/* adjust timers. this is easy, as the offset is the same for all of them */
1886	for (i = 0; i < timercnt; ++i)
1887	{
1888	ANHE *he = timers + i + HEAP0;
1889	ANHE_w (*he)->at += ev_rt_now - mn_now;
1890	ANHE_at_cache (*he);
1891	}
1892	}	2188	}
1893		2189
1894	mn_now = ev_rt_now;	2190	mn_now = ev_rt_now;
1895	}	2191	}
1896	}	2192	}
1897		2193
1898	void	2194	void
1899	ev_ref (EV_P)
1900	{
1901	++activecnt;
1902	}
1903
1904	void
1905	ev_unref (EV_P)
1906	{
1907	--activecnt;
1908	}
1909
1910	static int loop_done;
1911
1912	void
1913	ev_loop (EV_P_ int flags)	2195	ev_loop (EV_P_ int flags)
1914	{	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
1915	loop_done = EVUNLOOP_CANCEL;	2203	loop_done = EVUNLOOP_CANCEL;
1916		2204
1917	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 */
1918		2206
1919	do	2207	do
1920	{	2208	{
1921	#if EV_VERIFY >= 2	2209	#if EV_VERIFY >= 2
1922	ev_loop_verify (EV_A);	2210	ev_loop_verify (EV_A);
…		…
1935	/* we might have forked, so queue fork handlers */	2223	/* we might have forked, so queue fork handlers */
1936	if (expect_false (postfork))	2224	if (expect_false (postfork))
1937	if (forkcnt)	2225	if (forkcnt)
1938	{	2226	{
1939	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2227	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1940	call_pending (EV_A);	2228	EV_INVOKE_PENDING;
1941	}	2229	}
1942	#endif	2230	#endif
1943		2231
1944	/* queue prepare watchers (and execute them) */	2232	/* queue prepare watchers (and execute them) */
1945	if (expect_false (preparecnt))	2233	if (expect_false (preparecnt))
1946	{	2234	{
1947	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2235	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1948	call_pending (EV_A);	2236	EV_INVOKE_PENDING;
1949	}	2237	}
1950		2238
1951	if (expect_false (!activecnt))	2239	if (expect_false (loop_done))
1952	break;	2240	break;
1953		2241
1954	/* we might have forked, so reify kernel state if necessary */	2242	/* we might have forked, so reify kernel state if necessary */
1955	if (expect_false (postfork))	2243	if (expect_false (postfork))
1956	loop_fork (EV_A);	2244	loop_fork (EV_A);
…		…
1963	ev_tstamp waittime = 0.;	2251	ev_tstamp waittime = 0.;
1964	ev_tstamp sleeptime = 0.;	2252	ev_tstamp sleeptime = 0.;
1965		2253
1966	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2254	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1967	{	2255	{
		2256	/* remember old timestamp for io_blocktime calculation */
		2257	ev_tstamp prev_mn_now = mn_now;
		2258
1968	/* update time to cancel out callback processing overhead */	2259	/* update time to cancel out callback processing overhead */
1969	time_update (EV_A_ 1e100);	2260	time_update (EV_A_ 1e100);
1970		2261
1971	waittime = MAX_BLOCKTIME;	2262	waittime = MAX_BLOCKTIME;
1972		2263
…		…
1982	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;
1983	if (waittime > to) waittime = to;	2274	if (waittime > to) waittime = to;
1984	}	2275	}
1985	#endif	2276	#endif
1986		2277
		2278	/* don't let timeouts decrease the waittime below timeout_blocktime */
1987	if (expect_false (waittime < timeout_blocktime))	2279	if (expect_false (waittime < timeout_blocktime))
1988	waittime = timeout_blocktime;	2280	waittime = timeout_blocktime;
1989		2281
1990	sleeptime = waittime - backend_fudge;	2282	/* extra check because io_blocktime is commonly 0 */
1991
1992	if (expect_true (sleeptime > io_blocktime))	2283	if (expect_false (io_blocktime))
1993	sleeptime = io_blocktime;
1994
1995	if (sleeptime)
1996	{	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	{
1997	ev_sleep (sleeptime);	2292	ev_sleep (sleeptime);
1998	waittime -= sleeptime;	2293	waittime -= sleeptime;
		2294	}
1999	}	2295	}
2000	}	2296	}
2001		2297
		2298	#if EV_MINIMAL < 2
2002	++loop_count;	2299	++loop_count;
		2300	#endif
		2301	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2003	backend_poll (EV_A_ waittime);	2302	backend_poll (EV_A_ waittime);
		2303	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2004		2304
2005	/* update ev_rt_now, do magic */	2305	/* update ev_rt_now, do magic */
2006	time_update (EV_A_ waittime + sleeptime);	2306	time_update (EV_A_ waittime + sleeptime);
2007	}	2307	}
2008		2308
…		…
2019		2319
2020	/* queue check watchers, to be executed first */	2320	/* queue check watchers, to be executed first */
2021	if (expect_false (checkcnt))	2321	if (expect_false (checkcnt))
2022	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2322	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2023		2323
2024	call_pending (EV_A);	2324	EV_INVOKE_PENDING;
2025	}	2325	}
2026	while (expect_true (	2326	while (expect_true (
2027	activecnt	2327	activecnt
2028	&& !loop_done	2328	&& !loop_done
2029	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2329	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2030	));	2330	));
2031		2331
2032	if (loop_done == EVUNLOOP_ONE)	2332	if (loop_done == EVUNLOOP_ONE)
2033	loop_done = EVUNLOOP_CANCEL;	2333	loop_done = EVUNLOOP_CANCEL;
		2334
		2335	#if EV_MINIMAL < 2
		2336	--loop_depth;
		2337	#endif
2034	}	2338	}
2035		2339
2036	void	2340	void
2037	ev_unloop (EV_P_ int how)	2341	ev_unloop (EV_P_ int how)
2038	{	2342	{
2039	loop_done = how;	2343	loop_done = how;
2040	}	2344	}
2041		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
2042	/*****************************************************************************/	2383	/*****************************************************************************/
		2384	/* singly-linked list management, used when the expected list length is short */
2043		2385
2044	void inline_size	2386	inline_size void
2045	wlist_add (WL *head, WL elem)	2387	wlist_add (WL *head, WL elem)
2046	{	2388	{
2047	elem->next = *head;	2389	elem->next = *head;
2048	*head = elem;	2390	*head = elem;
2049	}	2391	}
2050		2392
2051	void inline_size	2393	inline_size void
2052	wlist_del (WL *head, WL elem)	2394	wlist_del (WL *head, WL elem)
2053	{	2395	{
2054	while (*head)	2396	while (*head)
2055	{	2397	{
2056	if (*head == elem)	2398	if (*head == elem)
…		…
2061		2403
2062	head = &(*head)->next;	2404	head = &(*head)->next;
2063	}	2405	}
2064	}	2406	}
2065		2407
2066	void inline_speed	2408	/* internal, faster, version of ev_clear_pending */
		2409	inline_speed void
2067	clear_pending (EV_P_ W w)	2410	clear_pending (EV_P_ W w)
2068	{	2411	{
2069	if (w->pending)	2412	if (w->pending)
2070	{	2413	{
2071	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2414	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2072	w->pending = 0;	2415	w->pending = 0;
2073	}	2416	}
2074	}	2417	}
2075		2418
2076	int	2419	int
…		…
2080	int pending = w_->pending;	2423	int pending = w_->pending;
2081		2424
2082	if (expect_true (pending))	2425	if (expect_true (pending))
2083	{	2426	{
2084	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2427	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2428	p->w = (W)&pending_w;
2085	w_->pending = 0;	2429	w_->pending = 0;
2086	p->w = 0;
2087	return p->events;	2430	return p->events;
2088	}	2431	}
2089	else	2432	else
2090	return 0;	2433	return 0;
2091	}	2434	}
2092		2435
2093	void inline_size	2436	inline_size void
2094	pri_adjust (EV_P_ W w)	2437	pri_adjust (EV_P_ W w)
2095	{	2438	{
2096	int pri = w->priority;	2439	int pri = ev_priority (w);
2097	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2440	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2098	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2441	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2099	w->priority = pri;	2442	ev_set_priority (w, pri);
2100	}	2443	}
2101		2444
2102	void inline_speed	2445	inline_speed void
2103	ev_start (EV_P_ W w, int active)	2446	ev_start (EV_P_ W w, int active)
2104	{	2447	{
2105	pri_adjust (EV_A_ w);	2448	pri_adjust (EV_A_ w);
2106	w->active = active;	2449	w->active = active;
2107	ev_ref (EV_A);	2450	ev_ref (EV_A);
2108	}	2451	}
2109		2452
2110	void inline_size	2453	inline_size void
2111	ev_stop (EV_P_ W w)	2454	ev_stop (EV_P_ W w)
2112	{	2455	{
2113	ev_unref (EV_A);	2456	ev_unref (EV_A);
2114	w->active = 0;	2457	w->active = 0;
2115	}	2458	}
…		…
2122	int fd = w->fd;	2465	int fd = w->fd;
2123		2466
2124	if (expect_false (ev_is_active (w)))	2467	if (expect_false (ev_is_active (w)))
2125	return;	2468	return;
2126		2469
2127	assert (("ev_io_start called with negative fd", fd >= 0));	2470	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2471	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2128		2472
2129	EV_FREQUENT_CHECK;	2473	EV_FREQUENT_CHECK;
2130		2474
2131	ev_start (EV_A_ (W)w, 1);	2475	ev_start (EV_A_ (W)w, 1);
2132	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2476	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2133	wlist_add (&anfds[fd].head, (WL)w);	2477	wlist_add (&anfds[fd].head, (WL)w);
2134		2478
2135	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2479	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2136	w->events &= ~EV_IOFDSET;	2480	w->events &= ~EV__IOFDSET;
2137		2481
2138	EV_FREQUENT_CHECK;	2482	EV_FREQUENT_CHECK;
2139	}	2483	}
2140		2484
2141	void noinline	2485	void noinline
…		…
2143	{	2487	{
2144	clear_pending (EV_A_ (W)w);	2488	clear_pending (EV_A_ (W)w);
2145	if (expect_false (!ev_is_active (w)))	2489	if (expect_false (!ev_is_active (w)))
2146	return;	2490	return;
2147		2491
2148	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));
2149		2493
2150	EV_FREQUENT_CHECK;	2494	EV_FREQUENT_CHECK;
2151		2495
2152	wlist_del (&anfds[w->fd].head, (WL)w);	2496	wlist_del (&anfds[w->fd].head, (WL)w);
2153	ev_stop (EV_A_ (W)w);	2497	ev_stop (EV_A_ (W)w);
…		…
2163	if (expect_false (ev_is_active (w)))	2507	if (expect_false (ev_is_active (w)))
2164	return;	2508	return;
2165		2509
2166	ev_at (w) += mn_now;	2510	ev_at (w) += mn_now;
2167		2511
2168	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.));
2169		2513
2170	EV_FREQUENT_CHECK;	2514	EV_FREQUENT_CHECK;
2171		2515
2172	++timercnt;	2516	++timercnt;
2173	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);	2517	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
…		…
2176	ANHE_at_cache (timers [ev_active (w)]);	2520	ANHE_at_cache (timers [ev_active (w)]);
2177	upheap (timers, ev_active (w));	2521	upheap (timers, ev_active (w));
2178		2522
2179	EV_FREQUENT_CHECK;	2523	EV_FREQUENT_CHECK;
2180		2524
2181	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2525	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2182	}	2526	}
2183		2527
2184	void noinline	2528	void noinline
2185	ev_timer_stop (EV_P_ ev_timer *w)	2529	ev_timer_stop (EV_P_ ev_timer *w)
2186	{	2530	{
…		…
2191	EV_FREQUENT_CHECK;	2535	EV_FREQUENT_CHECK;
2192		2536
2193	{	2537	{
2194	int active = ev_active (w);	2538	int active = ev_active (w);
2195		2539
2196	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2540	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2197		2541
2198	--timercnt;	2542	--timercnt;
2199		2543
2200	if (expect_true (active < timercnt + HEAP0))	2544	if (expect_true (active < timercnt + HEAP0))
2201	{	2545	{
…		…
2234	}	2578	}
2235		2579
2236	EV_FREQUENT_CHECK;	2580	EV_FREQUENT_CHECK;
2237	}	2581	}
2238		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
2239	#if EV_PERIODIC_ENABLE	2589	#if EV_PERIODIC_ENABLE
2240	void noinline	2590	void noinline
2241	ev_periodic_start (EV_P_ ev_periodic *w)	2591	ev_periodic_start (EV_P_ ev_periodic *w)
2242	{	2592	{
2243	if (expect_false (ev_is_active (w)))	2593	if (expect_false (ev_is_active (w)))
…		…
2245		2595
2246	if (w->reschedule_cb)	2596	if (w->reschedule_cb)
2247	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2597	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2248	else if (w->interval)	2598	else if (w->interval)
2249	{	2599	{
2250	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.));
2251	/* 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 */
2252	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;
2253	}	2603	}
2254	else	2604	else
2255	ev_at (w) = w->offset;	2605	ev_at (w) = w->offset;
…		…
2263	ANHE_at_cache (periodics [ev_active (w)]);	2613	ANHE_at_cache (periodics [ev_active (w)]);
2264	upheap (periodics, ev_active (w));	2614	upheap (periodics, ev_active (w));
2265		2615
2266	EV_FREQUENT_CHECK;	2616	EV_FREQUENT_CHECK;
2267		2617
2268	/*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));*/
2269	}	2619	}
2270		2620
2271	void noinline	2621	void noinline
2272	ev_periodic_stop (EV_P_ ev_periodic *w)	2622	ev_periodic_stop (EV_P_ ev_periodic *w)
2273	{	2623	{
…		…
2278	EV_FREQUENT_CHECK;	2628	EV_FREQUENT_CHECK;
2279		2629
2280	{	2630	{
2281	int active = ev_active (w);	2631	int active = ev_active (w);
2282		2632
2283	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2633	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2284		2634
2285	--periodiccnt;	2635	--periodiccnt;
2286		2636
2287	if (expect_true (active < periodiccnt + HEAP0))	2637	if (expect_true (active < periodiccnt + HEAP0))
2288	{	2638	{
…		…
2310	#endif	2660	#endif
2311		2661
2312	void noinline	2662	void noinline
2313	ev_signal_start (EV_P_ ev_signal *w)	2663	ev_signal_start (EV_P_ ev_signal *w)
2314	{	2664	{
2315	#if EV_MULTIPLICITY
2316	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2317	#endif
2318	if (expect_false (ev_is_active (w)))	2665	if (expect_false (ev_is_active (w)))
2319	return;	2666	return;
2320		2667
2321	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));
2322		2669
2323	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));
2324		2673
2325	EV_FREQUENT_CHECK;	2674	signals [w->signum - 1].loop = EV_A;
		2675	#endif
2326		2676
		2677	EV_FREQUENT_CHECK;
		2678
		2679	#if EV_USE_SIGNALFD
		2680	if (sigfd == -2)
2327	{	2681	{
2328	#ifndef _WIN32	2682	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2329	sigset_t full, prev;	2683	if (sigfd < 0 && errno == EINVAL)
2330	sigfillset (&full);	2684	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2331	sigprocmask (SIG_SETMASK, &full, &prev);
2332	#endif
2333		2685
2334	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2686	if (sigfd >= 0)
		2687	{
		2688	fd_intern (sigfd); /* doing it twice will not hurt */
2335		2689
2336	#ifndef _WIN32	2690	sigemptyset (&sigfd_set);
2337	sigprocmask (SIG_SETMASK, &prev, 0);	2691
2338	#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	}
2339	}	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
2340		2708
2341	ev_start (EV_A_ (W)w, 1);	2709	ev_start (EV_A_ (W)w, 1);
2342	wlist_add (&signals [w->signum - 1].head, (WL)w);	2710	wlist_add (&signals [w->signum - 1].head, (WL)w);
2343		2711
2344	if (!((WL)w)->next)	2712	if (!((WL)w)->next)
		2713	# if EV_USE_SIGNALFD
		2714	if (sigfd < 0) /*TODO*/
		2715	# endif
2345	{	2716	{
2346	#if _WIN32	2717	# if _WIN32
2347	signal (w->signum, ev_sighandler);	2718	signal (w->signum, ev_sighandler);
2348	#else	2719	# else
2349	struct sigaction sa;	2720	struct sigaction sa;
		2721
		2722	evpipe_init (EV_A);
		2723
2350	sa.sa_handler = ev_sighandler;	2724	sa.sa_handler = ev_sighandler;
2351	sigfillset (&sa.sa_mask);	2725	sigfillset (&sa.sa_mask);
2352	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 */
2353	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);
2354	#endif	2732	#endif
2355	}	2733	}
2356		2734
2357	EV_FREQUENT_CHECK;	2735	EV_FREQUENT_CHECK;
2358	}	2736	}
2359		2737
2360	void noinline	2738	void noinline
…		…
2368		2746
2369	wlist_del (&signals [w->signum - 1].head, (WL)w);	2747	wlist_del (&signals [w->signum - 1].head, (WL)w);
2370	ev_stop (EV_A_ (W)w);	2748	ev_stop (EV_A_ (W)w);
2371		2749
2372	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
2373	signal (w->signum, SIG_DFL);	2766	signal (w->signum, SIG_DFL);
		2767	}
2374		2768
2375	EV_FREQUENT_CHECK;	2769	EV_FREQUENT_CHECK;
2376	}	2770	}
2377		2771
2378	void	2772	void
2379	ev_child_start (EV_P_ ev_child *w)	2773	ev_child_start (EV_P_ ev_child *w)
2380	{	2774	{
2381	#if EV_MULTIPLICITY	2775	#if EV_MULTIPLICITY
2382	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));
2383	#endif	2777	#endif
2384	if (expect_false (ev_is_active (w)))	2778	if (expect_false (ev_is_active (w)))
2385	return;	2779	return;
2386		2780
2387	EV_FREQUENT_CHECK;	2781	EV_FREQUENT_CHECK;
…		…
2412	# ifdef _WIN32	2806	# ifdef _WIN32
2413	# undef lstat	2807	# undef lstat
2414	# define lstat(a,b) _stati64 (a,b)	2808	# define lstat(a,b) _stati64 (a,b)
2415	# endif	2809	# endif
2416		2810
2417	#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 */
2418	#define MIN_STAT_INTERVAL 0.1074891	2813	#define MIN_STAT_INTERVAL 0.1074891
2419		2814
2420	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);
2421		2816
2422	#if EV_USE_INOTIFY	2817	#if EV_USE_INOTIFY
2423	# define EV_INOTIFY_BUFSIZE 8192	2818	# define EV_INOTIFY_BUFSIZE 8192
…		…
2427	{	2822	{
2428	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);
2429		2824
2430	if (w->wd < 0)	2825	if (w->wd < 0)
2431	{	2826	{
		2827	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2432	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 */
2433		2829
2434	/* monitor some parent directory for speedup hints */	2830	/* monitor some parent directory for speedup hints */
2435	/* note that exceeding the hardcoded limit is not a correctness issue, */	2831	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2436	/* but an efficiency issue only */	2832	/* but an efficiency issue only */
2437	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2833	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2438	{	2834	{
2439	char path [4096];	2835	char path [4096];
2440	strcpy (path, w->path);	2836	strcpy (path, w->path);
…		…
2444	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2840	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2445	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2841	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2446		2842
2447	char *pend = strrchr (path, '/');	2843	char *pend = strrchr (path, '/');
2448		2844
2449	if (!pend)	2845	if (!pend || pend == path)
2450	break; /* whoops, no '/', complain to your admin */	2846	break;
2451		2847
2452	*pend = 0;	2848	*pend = 0;
2453	w->wd = inotify_add_watch (fs_fd, path, mask);	2849	w->wd = inotify_add_watch (fs_fd, path, mask);
2454	}	2850	}
2455	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2851	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2456	}	2852	}
2457	}	2853	}
2458	else
2459	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2460		2854
2461	if (w->wd >= 0)	2855	if (w->wd >= 0)
		2856	{
2462	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	}
2463	}	2876	}
2464		2877
2465	static void noinline	2878	static void noinline
2466	infy_del (EV_P_ ev_stat *w)	2879	infy_del (EV_P_ ev_stat *w)
2467	{	2880	{
…		…
2481		2894
2482	static void noinline	2895	static void noinline
2483	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2896	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2484	{	2897	{
2485	if (slot < 0)	2898	if (slot < 0)
2486	/* overflow, need to check for all hahs slots */	2899	/* overflow, need to check for all hash slots */
2487	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2900	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2488	infy_wd (EV_A_ slot, wd, ev);	2901	infy_wd (EV_A_ slot, wd, ev);
2489	else	2902	else
2490	{	2903	{
2491	WL w_;	2904	WL w_;
…		…
2497		2910
2498	if (w->wd == wd || wd == -1)	2911	if (w->wd == wd || wd == -1)
2499	{	2912	{
2500	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2913	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2501	{	2914	{
		2915	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2502	w->wd = -1;	2916	w->wd = -1;
2503	infy_add (EV_A_ w); /* re-add, no matter what */	2917	infy_add (EV_A_ w); /* re-add, no matter what */
2504	}	2918	}
2505		2919
2506	stat_timer_cb (EV_A_ &w->timer, 0);	2920	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2519		2933
2520	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)
2521	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2935	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2522	}	2936	}
2523		2937
2524	void inline_size	2938	inline_size void
		2939	check_2625 (EV_P)
		2940	{
		2941	/* kernels < 2.6.25 are borked
		2942	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2943	*/
		2944	struct utsname buf;
		2945	int major, minor, micro;
		2946
		2947	if (uname (&buf))
		2948	return;
		2949
		2950	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2951	return;
		2952
		2953	if (major < 2
		2954	|| (major == 2 && minor < 6)
		2955	|| (major == 2 && minor == 6 && micro < 25))
		2956	return;
		2957
		2958	fs_2625 = 1;
		2959	}
		2960
		2961	inline_size void
2525	infy_init (EV_P)	2962	infy_init (EV_P)
2526	{	2963	{
2527	if (fs_fd != -2)	2964	if (fs_fd != -2)
2528	return;	2965	return;
		2966
		2967	fs_fd = -1;
		2968
		2969	check_2625 (EV_A);
2529		2970
2530	fs_fd = inotify_init ();	2971	fs_fd = inotify_init ();
2531		2972
2532	if (fs_fd >= 0)	2973	if (fs_fd >= 0)
2533	{	2974	{
…		…
2535	ev_set_priority (&fs_w, EV_MAXPRI);	2976	ev_set_priority (&fs_w, EV_MAXPRI);
2536	ev_io_start (EV_A_ &fs_w);	2977	ev_io_start (EV_A_ &fs_w);
2537	}	2978	}
2538	}	2979	}
2539		2980
2540	void inline_size	2981	inline_size void
2541	infy_fork (EV_P)	2982	infy_fork (EV_P)
2542	{	2983	{
2543	int slot;	2984	int slot;
2544		2985
2545	if (fs_fd < 0)	2986	if (fs_fd < 0)
…		…
2561	w->wd = -1;	3002	w->wd = -1;
2562		3003
2563	if (fs_fd >= 0)	3004	if (fs_fd >= 0)
2564	infy_add (EV_A_ w); /* re-add, no matter what */	3005	infy_add (EV_A_ w); /* re-add, no matter what */
2565	else	3006	else
2566	ev_timer_start (EV_A_ &w->timer);	3007	ev_timer_again (EV_A_ &w->timer);
2567	}	3008	}
2568
2569	}	3009	}
2570	}	3010	}
2571		3011
2572	#endif	3012	#endif
2573		3013
…		…
2609	|| w->prev.st_atime != w->attr.st_atime	3049	|| w->prev.st_atime != w->attr.st_atime
2610	|| w->prev.st_mtime != w->attr.st_mtime	3050	|| w->prev.st_mtime != w->attr.st_mtime
2611	|| w->prev.st_ctime != w->attr.st_ctime	3051	|| w->prev.st_ctime != w->attr.st_ctime
2612	) {	3052	) {
2613	#if EV_USE_INOTIFY	3053	#if EV_USE_INOTIFY
		3054	if (fs_fd >= 0)
		3055	{
2614	infy_del (EV_A_ w);	3056	infy_del (EV_A_ w);
2615	infy_add (EV_A_ w);	3057	infy_add (EV_A_ w);
2616	ev_stat_stat (EV_A_ w); /* avoid race... */	3058	ev_stat_stat (EV_A_ w); /* avoid race... */
		3059	}
2617	#endif	3060	#endif
2618		3061
2619	ev_feed_event (EV_A_ w, EV_STAT);	3062	ev_feed_event (EV_A_ w, EV_STAT);
2620	}	3063	}
2621	}	3064	}
…		…
2624	ev_stat_start (EV_P_ ev_stat *w)	3067	ev_stat_start (EV_P_ ev_stat *w)
2625	{	3068	{
2626	if (expect_false (ev_is_active (w)))	3069	if (expect_false (ev_is_active (w)))
2627	return;	3070	return;
2628		3071
2629	/* since we use memcmp, we need to clear any padding data etc. */
2630	memset (&w->prev, 0, sizeof (ev_statdata));
2631	memset (&w->attr, 0, sizeof (ev_statdata));
2632
2633	ev_stat_stat (EV_A_ w);	3072	ev_stat_stat (EV_A_ w);
2634		3073
		3074	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2635	if (w->interval < MIN_STAT_INTERVAL)	3075	w->interval = MIN_STAT_INTERVAL;
2636	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2637		3076
2638	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);
2639	ev_set_priority (&w->timer, ev_priority (w));	3078	ev_set_priority (&w->timer, ev_priority (w));
2640		3079
2641	#if EV_USE_INOTIFY	3080	#if EV_USE_INOTIFY
2642	infy_init (EV_A);	3081	infy_init (EV_A);
2643		3082
2644	if (fs_fd >= 0)	3083	if (fs_fd >= 0)
2645	infy_add (EV_A_ w);	3084	infy_add (EV_A_ w);
2646	else	3085	else
2647	#endif	3086	#endif
2648	ev_timer_start (EV_A_ &w->timer);	3087	ev_timer_again (EV_A_ &w->timer);
2649		3088
2650	ev_start (EV_A_ (W)w, 1);	3089	ev_start (EV_A_ (W)w, 1);
2651		3090
2652	EV_FREQUENT_CHECK;	3091	EV_FREQUENT_CHECK;
2653	}	3092	}
…		…
2813	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3252	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2814	{	3253	{
2815	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3254	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2816		3255
2817	{	3256	{
2818	struct ev_loop *loop = w->other;	3257	EV_P = w->other;
2819		3258
2820	while (fdchangecnt)	3259	while (fdchangecnt)
2821	{	3260	{
2822	fd_reify (EV_A);	3261	fd_reify (EV_A);
2823	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3262	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2824	}	3263	}
2825	}	3264	}
2826	}	3265	}
2827		3266
		3267	static void
		3268	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3269	{
		3270	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3271
		3272	ev_embed_stop (EV_A_ w);
		3273
		3274	{
		3275	EV_P = w->other;
		3276
		3277	ev_loop_fork (EV_A);
		3278	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3279	}
		3280
		3281	ev_embed_start (EV_A_ w);
		3282	}
		3283
2828	#if 0	3284	#if 0
2829	static void	3285	static void
2830	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3286	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2831	{	3287	{
2832	ev_idle_stop (EV_A_ idle);	3288	ev_idle_stop (EV_A_ idle);
…		…
2838	{	3294	{
2839	if (expect_false (ev_is_active (w)))	3295	if (expect_false (ev_is_active (w)))
2840	return;	3296	return;
2841		3297
2842	{	3298	{
2843	struct ev_loop *loop = w->other;	3299	EV_P = w->other;
2844	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 ()));
2845	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);
2846	}	3302	}
2847		3303
2848	EV_FREQUENT_CHECK;	3304	EV_FREQUENT_CHECK;
2849		3305
…		…
2852		3308
2853	ev_prepare_init (&w->prepare, embed_prepare_cb);	3309	ev_prepare_init (&w->prepare, embed_prepare_cb);
2854	ev_set_priority (&w->prepare, EV_MINPRI);	3310	ev_set_priority (&w->prepare, EV_MINPRI);
2855	ev_prepare_start (EV_A_ &w->prepare);	3311	ev_prepare_start (EV_A_ &w->prepare);
2856		3312
		3313	ev_fork_init (&w->fork, embed_fork_cb);
		3314	ev_fork_start (EV_A_ &w->fork);
		3315
2857	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3316	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2858		3317
2859	ev_start (EV_A_ (W)w, 1);	3318	ev_start (EV_A_ (W)w, 1);
2860		3319
2861	EV_FREQUENT_CHECK;	3320	EV_FREQUENT_CHECK;
…		…
2868	if (expect_false (!ev_is_active (w)))	3327	if (expect_false (!ev_is_active (w)))
2869	return;	3328	return;
2870		3329
2871	EV_FREQUENT_CHECK;	3330	EV_FREQUENT_CHECK;
2872		3331
2873	ev_io_stop (EV_A_ &w->io);	3332	ev_io_stop (EV_A_ &w->io);
2874	ev_prepare_stop (EV_A_ &w->prepare);	3333	ev_prepare_stop (EV_A_ &w->prepare);
2875		3334	ev_fork_stop (EV_A_ &w->fork);
2876	ev_stop (EV_A_ (W)w);
2877		3335
2878	EV_FREQUENT_CHECK;	3336	EV_FREQUENT_CHECK;
2879	}	3337	}
2880	#endif	3338	#endif
2881		3339
…		…
2978	once_cb (EV_P_ struct ev_once *once, int revents)	3436	once_cb (EV_P_ struct ev_once *once, int revents)
2979	{	3437	{
2980	void (*cb)(int revents, void *arg) = once->cb;	3438	void (*cb)(int revents, void *arg) = once->cb;
2981	void *arg = once->arg;	3439	void *arg = once->arg;
2982		3440
2983	ev_io_stop (EV_A_ &once->io);	3441	ev_io_stop (EV_A_ &once->io);
2984	ev_timer_stop (EV_A_ &once->to);	3442	ev_timer_stop (EV_A_ &once->to);
2985	ev_free (once);	3443	ev_free (once);
2986		3444
2987	cb (revents, arg);	3445	cb (revents, arg);
2988	}	3446	}
2989		3447
2990	static void	3448	static void
2991	once_cb_io (EV_P_ ev_io *w, int revents)	3449	once_cb_io (EV_P_ ev_io *w, int revents)
2992	{	3450	{
2993	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3451	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3452
		3453	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2994	}	3454	}
2995		3455
2996	static void	3456	static void
2997	once_cb_to (EV_P_ ev_timer *w, int revents)	3457	once_cb_to (EV_P_ ev_timer *w, int revents)
2998	{	3458	{
2999	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3459	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3460
		3461	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3000	}	3462	}
3001		3463
3002	void	3464	void
3003	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3465	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
3004	{	3466	{
…		…
3026	ev_timer_set (&once->to, timeout, 0.);	3488	ev_timer_set (&once->to, timeout, 0.);
3027	ev_timer_start (EV_A_ &once->to);	3489	ev_timer_start (EV_A_ &once->to);
3028	}	3490	}
3029	}	3491	}
3030		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
3031	#if EV_MULTIPLICITY	3601	#if EV_MULTIPLICITY
3032	#include "ev_wrap.h"	3602	#include "ev_wrap.h"
3033	#endif	3603	#endif
3034		3604
3035	#ifdef __cplusplus	3605	#ifdef __cplusplus

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