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Comparing libev/ev.c (file contents):
Revision 1.260 by root, Mon Sep 8 17:24:39 2008 UTC vs.
Revision 1.305 by root, Sun Jul 19 03:49:04 2009 UTC

1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without modifica-	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* tion, are permitted provided that the following conditions are met:	8	* tion, are permitted provided that the following conditions are met:
9	*	9	*
…		…
47	# include EV_CONFIG_H	47	# include EV_CONFIG_H
48	# else	48	# else
49	# include "config.h"	49	# include "config.h"
50	# endif	50	# endif
51		51
		52	# if HAVE_CLOCK_SYSCALL
		53	# ifndef EV_USE_CLOCK_SYSCALL
		54	# define EV_USE_CLOCK_SYSCALL 1
		55	# ifndef EV_USE_REALTIME
		56	# define EV_USE_REALTIME 0
		57	# endif
		58	# ifndef EV_USE_MONOTONIC
		59	# define EV_USE_MONOTONIC 1
		60	# endif
		61	# endif
		62	# elif !defined(EV_USE_CLOCK_SYSCALL)
		63	# define EV_USE_CLOCK_SYSCALL 0
		64	# endif
		65
52	# if HAVE_CLOCK_GETTIME	66	# if HAVE_CLOCK_GETTIME
53	# ifndef EV_USE_MONOTONIC	67	# ifndef EV_USE_MONOTONIC
54	# define EV_USE_MONOTONIC 1	68	# define EV_USE_MONOTONIC 1
55	# endif	69	# endif
56	# ifndef EV_USE_REALTIME	70	# ifndef EV_USE_REALTIME
57	# define EV_USE_REALTIME 1	71	# define EV_USE_REALTIME 0
58	# endif	72	# endif
59	# else	73	# else
60	# ifndef EV_USE_MONOTONIC	74	# ifndef EV_USE_MONOTONIC
61	# define EV_USE_MONOTONIC 0	75	# define EV_USE_MONOTONIC 0
62	# endif	76	# endif
…		…
119	# else	133	# else
120	# define EV_USE_INOTIFY 0	134	# define EV_USE_INOTIFY 0
121	# endif	135	# endif
122	# endif	136	# endif
123		137
		138	# ifndef EV_USE_SIGNALFD
		139	# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
		140	# define EV_USE_SIGNALFD 1
		141	# else
		142	# define EV_USE_SIGNALFD 0
		143	# endif
		144	# endif
		145
124	# ifndef EV_USE_EVENTFD	146	# ifndef EV_USE_EVENTFD
125	# if HAVE_EVENTFD	147	# if HAVE_EVENTFD
126	# define EV_USE_EVENTFD 1	148	# define EV_USE_EVENTFD 1
127	# else	149	# else
128	# define EV_USE_EVENTFD 0	150	# define EV_USE_EVENTFD 0
…		…
164	# endif	186	# endif
165	#endif	187	#endif
166		188
167	/* this block tries to deduce configuration from header-defined symbols and defaults */	189	/* this block tries to deduce configuration from header-defined symbols and defaults */
168		190
		191	/* try to deduce the maximum number of signals on this platform */
		192	#if defined (EV_NSIG)
		193	/* use what's provided */
		194	#elif defined (NSIG)
		195	# define EV_NSIG (NSIG)
		196	#elif defined(_NSIG)
		197	# define EV_NSIG (_NSIG)
		198	#elif defined (SIGMAX)
		199	# define EV_NSIG (SIGMAX+1)
		200	#elif defined (SIG_MAX)
		201	# define EV_NSIG (SIG_MAX+1)
		202	#elif defined (_SIG_MAX)
		203	# define EV_NSIG (_SIG_MAX+1)
		204	#elif defined (MAXSIG)
		205	# define EV_NSIG (MAXSIG+1)
		206	#elif defined (MAX_SIG)
		207	# define EV_NSIG (MAX_SIG+1)
		208	#elif defined (SIGARRAYSIZE)
		209	# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
		210	#elif defined (_sys_nsig)
		211	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
		212	#else
		213	# error "unable to find value for NSIG, please report"
		214	/* to make it compile regardless, just remove the above line */
		215	# define EV_NSIG 64
		216	#endif
		217
		218	/* Default to some arbitrary number that's big enough to get most
		219	of the common signals.
		220	*/
		221	#ifndef NSIG
		222	# define NSIG 50
		223	#endif
		224	/* <-- NSIG logic from Configure */
		225	#ifndef EV_USE_CLOCK_SYSCALL
		226	# if __linux && __GLIBC__ >= 2
		227	# define EV_USE_CLOCK_SYSCALL 1
		228	# else
		229	# define EV_USE_CLOCK_SYSCALL 0
		230	# endif
		231	#endif
		232
169	#ifndef EV_USE_MONOTONIC	233	#ifndef EV_USE_MONOTONIC
170	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0	234	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
171	# define EV_USE_MONOTONIC 1	235	# define EV_USE_MONOTONIC 1
172	# else	236	# else
173	# define EV_USE_MONOTONIC 0	237	# define EV_USE_MONOTONIC 0
174	# endif	238	# endif
175	#endif	239	#endif
176		240
177	#ifndef EV_USE_REALTIME	241	#ifndef EV_USE_REALTIME
178	# define EV_USE_REALTIME 0	242	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
179	#endif	243	#endif
180		244
181	#ifndef EV_USE_NANOSLEEP	245	#ifndef EV_USE_NANOSLEEP
182	# if _POSIX_C_SOURCE >= 199309L	246	# if _POSIX_C_SOURCE >= 199309L
183	# define EV_USE_NANOSLEEP 1	247	# define EV_USE_NANOSLEEP 1
…		…
244	# else	308	# else
245	# define EV_USE_EVENTFD 0	309	# define EV_USE_EVENTFD 0
246	# endif	310	# endif
247	#endif	311	#endif
248		312
		313	#ifndef EV_USE_SIGNALFD
		314	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9))
		315	# define EV_USE_SIGNALFD 1
		316	# else
		317	# define EV_USE_SIGNALFD 0
		318	# endif
		319	#endif
		320
249	#if 0 /* debugging */	321	#if 0 /* debugging */
250	# define EV_VERIFY 3	322	# define EV_VERIFY 3
251	# define EV_USE_4HEAP 1	323	# define EV_USE_4HEAP 1
252	# define EV_HEAP_CACHE_AT 1	324	# define EV_HEAP_CACHE_AT 1
253	#endif	325	#endif
…		…
262		334
263	#ifndef EV_HEAP_CACHE_AT	335	#ifndef EV_HEAP_CACHE_AT
264	# define EV_HEAP_CACHE_AT !EV_MINIMAL	336	# define EV_HEAP_CACHE_AT !EV_MINIMAL
265	#endif	337	#endif
266		338
		339	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		340	/* which makes programs even slower. might work on other unices, too. */
		341	#if EV_USE_CLOCK_SYSCALL
		342	# include <syscall.h>
		343	# ifdef SYS_clock_gettime
		344	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		345	# undef EV_USE_MONOTONIC
		346	# define EV_USE_MONOTONIC 1
		347	# else
		348	# undef EV_USE_CLOCK_SYSCALL
		349	# define EV_USE_CLOCK_SYSCALL 0
		350	# endif
		351	#endif
		352
267	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	353	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
268		354
269	#ifndef CLOCK_MONOTONIC	355	#ifndef CLOCK_MONOTONIC
270	# undef EV_USE_MONOTONIC	356	# undef EV_USE_MONOTONIC
271	# define EV_USE_MONOTONIC 0	357	# define EV_USE_MONOTONIC 0
…		…
286	# include <sys/select.h>	372	# include <sys/select.h>
287	# endif	373	# endif
288	#endif	374	#endif
289		375
290	#if EV_USE_INOTIFY	376	#if EV_USE_INOTIFY
		377	# include <sys/utsname.h>
		378	# include <sys/statfs.h>
291	# include <sys/inotify.h>	379	# include <sys/inotify.h>
		380	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
		381	# ifndef IN_DONT_FOLLOW
		382	# undef EV_USE_INOTIFY
		383	# define EV_USE_INOTIFY 0
		384	# endif
292	#endif	385	#endif
293		386
294	#if EV_SELECT_IS_WINSOCKET	387	#if EV_SELECT_IS_WINSOCKET
295	# include <winsock.h>	388	# include <winsock.h>
296	#endif	389	#endif
297		390
298	#if EV_USE_EVENTFD	391	#if EV_USE_EVENTFD
299	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	392	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
300	# include <stdint.h>	393	# include <stdint.h>
		394	# ifndef EFD_NONBLOCK
		395	# define EFD_NONBLOCK O_NONBLOCK
		396	# endif
		397	# ifndef EFD_CLOEXEC
		398	# define EFD_CLOEXEC O_CLOEXEC
		399	# endif
301	# ifdef __cplusplus	400	# ifdef __cplusplus
302	extern "C" {	401	extern "C" {
303	# endif	402	# endif
304	int eventfd (unsigned int initval, int flags);	403	int eventfd (unsigned int initval, int flags);
305	# ifdef __cplusplus	404	# ifdef __cplusplus
306	}	405	}
307	# endif	406	# endif
		407	#endif
		408
		409	#if EV_USE_SIGNALFD
		410	# include <sys/signalfd.h>
308	#endif	411	#endif
309		412
310	/**/	413	/**/
311		414
312	#if EV_VERIFY >= 3	415	#if EV_VERIFY >= 3
…		…
348	# define inline_speed static noinline	451	# define inline_speed static noinline
349	#else	452	#else
350	# define inline_speed static inline	453	# define inline_speed static inline
351	#endif	454	#endif
352		455
353	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	456	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		457
		458	#if EV_MINPRI == EV_MAXPRI
		459	# define ABSPRI(w) (((W)w), 0)
		460	#else
354	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	461	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		462	#endif
355		463
356	#define EMPTY /* required for microsofts broken pseudo-c compiler */	464	#define EMPTY /* required for microsofts broken pseudo-c compiler */
357	#define EMPTY2(a,b) /* used to suppress some warnings */	465	#define EMPTY2(a,b) /* used to suppress some warnings */
358		466
359	typedef ev_watcher *W;	467	typedef ev_watcher *W;
…		…
361	typedef ev_watcher_time *WT;	469	typedef ev_watcher_time *WT;
362		470
363	#define ev_active(w) ((W)(w))->active	471	#define ev_active(w) ((W)(w))->active
364	#define ev_at(w) ((WT)(w))->at	472	#define ev_at(w) ((WT)(w))->at
365		473
366	#if EV_USE_MONOTONIC	474	#if EV_USE_REALTIME
367	/* sig_atomic_t is used to avoid per-thread variables or locking but still */	475	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
368	/* giving it a reasonably high chance of working on typical architetcures */	476	/* giving it a reasonably high chance of working on typical architetcures */
		477	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		478	#endif
		479
		480	#if EV_USE_MONOTONIC
369	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	481	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
370	#endif	482	#endif
371		483
372	#ifdef _WIN32	484	#ifdef _WIN32
373	# include "ev_win32.c"	485	# include "ev_win32.c"
…		…
382	{	494	{
383	syserr_cb = cb;	495	syserr_cb = cb;
384	}	496	}
385		497
386	static void noinline	498	static void noinline
387	syserr (const char *msg)	499	ev_syserr (const char *msg)
388	{	500	{
389	if (!msg)	501	if (!msg)
390	msg = "(libev) system error";	502	msg = "(libev) system error";
391		503
392	if (syserr_cb)	504	if (syserr_cb)
…		…
438	#define ev_malloc(size) ev_realloc (0, (size))	550	#define ev_malloc(size) ev_realloc (0, (size))
439	#define ev_free(ptr) ev_realloc ((ptr), 0)	551	#define ev_free(ptr) ev_realloc ((ptr), 0)
440		552
441	/*****************************************************************************/	553	/*****************************************************************************/
442		554
		555	/* set in reify when reification needed */
		556	#define EV_ANFD_REIFY 1
		557
		558	/* file descriptor info structure */
443	typedef struct	559	typedef struct
444	{	560	{
445	WL head;	561	WL head;
446	unsigned char events;	562	unsigned char events; /* the events watched for */
		563	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
		564	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
447	unsigned char reify;	565	unsigned char unused;
		566	#if EV_USE_EPOLL
		567	unsigned int egen; /* generation counter to counter epoll bugs */
		568	#endif
448	#if EV_SELECT_IS_WINSOCKET	569	#if EV_SELECT_IS_WINSOCKET
449	SOCKET handle;	570	SOCKET handle;
450	#endif	571	#endif
451	} ANFD;	572	} ANFD;
452		573
		574	/* stores the pending event set for a given watcher */
453	typedef struct	575	typedef struct
454	{	576	{
455	W w;	577	W w;
456	int events;	578	int events; /* the pending event set for the given watcher */
457	} ANPENDING;	579	} ANPENDING;
458		580
459	#if EV_USE_INOTIFY	581	#if EV_USE_INOTIFY
460	/* hash table entry per inotify-id */	582	/* hash table entry per inotify-id */
461	typedef struct	583	typedef struct
…		…
464	} ANFS;	586	} ANFS;
465	#endif	587	#endif
466		588
467	/* Heap Entry */	589	/* Heap Entry */
468	#if EV_HEAP_CACHE_AT	590	#if EV_HEAP_CACHE_AT
		591	/* a heap element */
469	typedef struct {	592	typedef struct {
470	ev_tstamp at;	593	ev_tstamp at;
471	WT w;	594	WT w;
472	} ANHE;	595	} ANHE;
473		596
474	#define ANHE_w(he) (he).w /* access watcher, read-write */	597	#define ANHE_w(he) (he).w /* access watcher, read-write */
475	#define ANHE_at(he) (he).at /* access cached at, read-only */	598	#define ANHE_at(he) (he).at /* access cached at, read-only */
476	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */	599	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
477	#else	600	#else
		601	/* a heap element */
478	typedef WT ANHE;	602	typedef WT ANHE;
479		603
480	#define ANHE_w(he) (he)	604	#define ANHE_w(he) (he)
481	#define ANHE_at(he) (he)->at	605	#define ANHE_at(he) (he)->at
482	#define ANHE_at_cache(he)	606	#define ANHE_at_cache(he)
…		…
506		630
507	static int ev_default_loop_ptr;	631	static int ev_default_loop_ptr;
508		632
509	#endif	633	#endif
510		634
		635	#if EV_MINIMAL < 2
		636	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		637	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		638	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		639	#else
		640	# define EV_RELEASE_CB (void)0
		641	# define EV_ACQUIRE_CB (void)0
		642	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		643	#endif
		644
		645	#define EVUNLOOP_RECURSE 0x80
		646
511	/*****************************************************************************/	647	/*****************************************************************************/
512		648
		649	#ifndef EV_HAVE_EV_TIME
513	ev_tstamp	650	ev_tstamp
514	ev_time (void)	651	ev_time (void)
515	{	652	{
516	#if EV_USE_REALTIME	653	#if EV_USE_REALTIME
		654	if (expect_true (have_realtime))
		655	{
517	struct timespec ts;	656	struct timespec ts;
518	clock_gettime (CLOCK_REALTIME, &ts);	657	clock_gettime (CLOCK_REALTIME, &ts);
519	return ts.tv_sec + ts.tv_nsec * 1e-9;	658	return ts.tv_sec + ts.tv_nsec * 1e-9;
520	#else	659	}
		660	#endif
		661
521	struct timeval tv;	662	struct timeval tv;
522	gettimeofday (&tv, 0);	663	gettimeofday (&tv, 0);
523	return tv.tv_sec + tv.tv_usec * 1e-6;	664	return tv.tv_sec + tv.tv_usec * 1e-6;
524	#endif
525	}	665	}
		666	#endif
526		667
527	ev_tstamp inline_size	668	inline_size ev_tstamp
528	get_clock (void)	669	get_clock (void)
529	{	670	{
530	#if EV_USE_MONOTONIC	671	#if EV_USE_MONOTONIC
531	if (expect_true (have_monotonic))	672	if (expect_true (have_monotonic))
532	{	673	{
…		…
566		707
567	tv.tv_sec = (time_t)delay;	708	tv.tv_sec = (time_t)delay;
568	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	709	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
569		710
570	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */	711	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
571	/* somehting nto guaranteed by newer posix versions, but guaranteed */	712	/* something not guaranteed by newer posix versions, but guaranteed */
572	/* by older ones */	713	/* by older ones */
573	select (0, 0, 0, 0, &tv);	714	select (0, 0, 0, 0, &tv);
574	#endif	715	#endif
575	}	716	}
576	}	717	}
577		718
578	/*****************************************************************************/	719	/*****************************************************************************/
579		720
580	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	721	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
581		722
582	int inline_size	723	/* find a suitable new size for the given array, */
		724	/* hopefully by rounding to a ncie-to-malloc size */
		725	inline_size int
583	array_nextsize (int elem, int cur, int cnt)	726	array_nextsize (int elem, int cur, int cnt)
584	{	727	{
585	int ncur = cur + 1;	728	int ncur = cur + 1;
586		729
587	do	730	do
…		…
604	array_realloc (int elem, void *base, int *cur, int cnt)	747	array_realloc (int elem, void *base, int *cur, int cnt)
605	{	748	{
606	*cur = array_nextsize (elem, *cur, cnt);	749	*cur = array_nextsize (elem, *cur, cnt);
607	return ev_realloc (base, elem * *cur);	750	return ev_realloc (base, elem * *cur);
608	}	751	}
		752
		753	#define array_init_zero(base,count) \
		754	memset ((void *)(base), 0, sizeof (*(base)) * (count))
609		755
610	#define array_needsize(type,base,cur,cnt,init) \	756	#define array_needsize(type,base,cur,cnt,init) \
611	if (expect_false ((cnt) > (cur))) \	757	if (expect_false ((cnt) > (cur))) \
612	{ \	758	{ \
613	int ocur_ = (cur); \	759	int ocur_ = (cur); \
…		…
625	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	771	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
626	}	772	}
627	#endif	773	#endif
628		774
629	#define array_free(stem, idx) \	775	#define array_free(stem, idx) \
630	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	776	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
631		777
632	/*****************************************************************************/	778	/*****************************************************************************/
		779
		780	/* dummy callback for pending events */
		781	static void noinline
		782	pendingcb (EV_P_ ev_prepare *w, int revents)
		783	{
		784	}
633		785
634	void noinline	786	void noinline
635	ev_feed_event (EV_P_ void *w, int revents)	787	ev_feed_event (EV_P_ void *w, int revents)
636	{	788	{
637	W w_ = (W)w;	789	W w_ = (W)w;
…		…
646	pendings [pri][w_->pending - 1].w = w_;	798	pendings [pri][w_->pending - 1].w = w_;
647	pendings [pri][w_->pending - 1].events = revents;	799	pendings [pri][w_->pending - 1].events = revents;
648	}	800	}
649	}	801	}
650		802
651	void inline_speed	803	inline_speed void
		804	feed_reverse (EV_P_ W w)
		805	{
		806	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		807	rfeeds [rfeedcnt++] = w;
		808	}
		809
		810	inline_size void
		811	feed_reverse_done (EV_P_ int revents)
		812	{
		813	do
		814	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		815	while (rfeedcnt);
		816	}
		817
		818	inline_speed void
652	queue_events (EV_P_ W *events, int eventcnt, int type)	819	queue_events (EV_P_ W *events, int eventcnt, int type)
653	{	820	{
654	int i;	821	int i;
655		822
656	for (i = 0; i < eventcnt; ++i)	823	for (i = 0; i < eventcnt; ++i)
657	ev_feed_event (EV_A_ events [i], type);	824	ev_feed_event (EV_A_ events [i], type);
658	}	825	}
659		826
660	/*****************************************************************************/	827	/*****************************************************************************/
661		828
662	void inline_size	829	inline_speed void
663	anfds_init (ANFD *base, int count)
664	{
665	while (count--)
666	{
667	base->head = 0;
668	base->events = EV_NONE;
669	base->reify = 0;
670
671	++base;
672	}
673	}
674
675	void inline_speed
676	fd_event (EV_P_ int fd, int revents)	830	fd_event_nc (EV_P_ int fd, int revents)
677	{	831	{
678	ANFD *anfd = anfds + fd;	832	ANFD *anfd = anfds + fd;
679	ev_io *w;	833	ev_io *w;
680		834
681	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	835	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
685	if (ev)	839	if (ev)
686	ev_feed_event (EV_A_ (W)w, ev);	840	ev_feed_event (EV_A_ (W)w, ev);
687	}	841	}
688	}	842	}
689		843
		844	/* do not submit kernel events for fds that have reify set */
		845	/* because that means they changed while we were polling for new events */
		846	inline_speed void
		847	fd_event (EV_P_ int fd, int revents)
		848	{
		849	ANFD *anfd = anfds + fd;
		850
		851	if (expect_true (!anfd->reify))
		852	fd_event_nc (EV_A_ fd, revents);
		853	}
		854
690	void	855	void
691	ev_feed_fd_event (EV_P_ int fd, int revents)	856	ev_feed_fd_event (EV_P_ int fd, int revents)
692	{	857	{
693	if (fd >= 0 && fd < anfdmax)	858	if (fd >= 0 && fd < anfdmax)
694	fd_event (EV_A_ fd, revents);	859	fd_event_nc (EV_A_ fd, revents);
695	}	860	}
696		861
697	void inline_size	862	/* make sure the external fd watch events are in-sync */
		863	/* with the kernel/libev internal state */
		864	inline_size void
698	fd_reify (EV_P)	865	fd_reify (EV_P)
699	{	866	{
700	int i;	867	int i;
701		868
702	for (i = 0; i < fdchangecnt; ++i)	869	for (i = 0; i < fdchangecnt; ++i)
…		…
717	#ifdef EV_FD_TO_WIN32_HANDLE	884	#ifdef EV_FD_TO_WIN32_HANDLE
718	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	885	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
719	#else	886	#else
720	anfd->handle = _get_osfhandle (fd);	887	anfd->handle = _get_osfhandle (fd);
721	#endif	888	#endif
722	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	889	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
723	}	890	}
724	#endif	891	#endif
725		892
726	{	893	{
727	unsigned char o_events = anfd->events;	894	unsigned char o_events = anfd->events;
728	unsigned char o_reify = anfd->reify;	895	unsigned char o_reify = anfd->reify;
729		896
730	anfd->reify = 0;	897	anfd->reify = 0;
731	anfd->events = events;	898	anfd->events = events;
732		899
733	if (o_events != events || o_reify & EV_IOFDSET)	900	if (o_events != events || o_reify & EV__IOFDSET)
734	backend_modify (EV_A_ fd, o_events, events);	901	backend_modify (EV_A_ fd, o_events, events);
735	}	902	}
736	}	903	}
737		904
738	fdchangecnt = 0;	905	fdchangecnt = 0;
739	}	906	}
740		907
741	void inline_size	908	/* something about the given fd changed */
		909	inline_size void
742	fd_change (EV_P_ int fd, int flags)	910	fd_change (EV_P_ int fd, int flags)
743	{	911	{
744	unsigned char reify = anfds [fd].reify;	912	unsigned char reify = anfds [fd].reify;
745	anfds [fd].reify |= flags;	913	anfds [fd].reify |= flags;
746		914
…		…
750	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	918	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
751	fdchanges [fdchangecnt - 1] = fd;	919	fdchanges [fdchangecnt - 1] = fd;
752	}	920	}
753	}	921	}
754		922
755	void inline_speed	923	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		924	inline_speed void
756	fd_kill (EV_P_ int fd)	925	fd_kill (EV_P_ int fd)
757	{	926	{
758	ev_io *w;	927	ev_io *w;
759		928
760	while ((w = (ev_io *)anfds [fd].head))	929	while ((w = (ev_io *)anfds [fd].head))
…		…
762	ev_io_stop (EV_A_ w);	931	ev_io_stop (EV_A_ w);
763	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	932	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
764	}	933	}
765	}	934	}
766		935
767	int inline_size	936	/* check whether the given fd is atcually valid, for error recovery */
		937	inline_size int
768	fd_valid (int fd)	938	fd_valid (int fd)
769	{	939	{
770	#ifdef _WIN32	940	#ifdef _WIN32
771	return _get_osfhandle (fd) != -1;	941	return _get_osfhandle (fd) != -1;
772	#else	942	#else
…		…
808		978
809	for (fd = 0; fd < anfdmax; ++fd)	979	for (fd = 0; fd < anfdmax; ++fd)
810	if (anfds [fd].events)	980	if (anfds [fd].events)
811	{	981	{
812	anfds [fd].events = 0;	982	anfds [fd].events = 0;
		983	anfds [fd].emask = 0;
813	fd_change (EV_A_ fd, EV_IOFDSET | 1);	984	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
814	}	985	}
815	}	986	}
816		987
817	/*****************************************************************************/	988	/*****************************************************************************/
818		989
…		…
834	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	1005	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
835	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)	1006	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
836	#define UPHEAP_DONE(p,k) ((p) == (k))	1007	#define UPHEAP_DONE(p,k) ((p) == (k))
837		1008
838	/* away from the root */	1009	/* away from the root */
839	void inline_speed	1010	inline_speed void
840	downheap (ANHE *heap, int N, int k)	1011	downheap (ANHE *heap, int N, int k)
841	{	1012	{
842	ANHE he = heap [k];	1013	ANHE he = heap [k];
843	ANHE *E = heap + N + HEAP0;	1014	ANHE *E = heap + N + HEAP0;
844		1015
…		…
884	#define HEAP0 1	1055	#define HEAP0 1
885	#define HPARENT(k) ((k) >> 1)	1056	#define HPARENT(k) ((k) >> 1)
886	#define UPHEAP_DONE(p,k) (!(p))	1057	#define UPHEAP_DONE(p,k) (!(p))
887		1058
888	/* away from the root */	1059	/* away from the root */
889	void inline_speed	1060	inline_speed void
890	downheap (ANHE *heap, int N, int k)	1061	downheap (ANHE *heap, int N, int k)
891	{	1062	{
892	ANHE he = heap [k];	1063	ANHE he = heap [k];
893		1064
894	for (;;)	1065	for (;;)
…		…
914	ev_active (ANHE_w (he)) = k;	1085	ev_active (ANHE_w (he)) = k;
915	}	1086	}
916	#endif	1087	#endif
917		1088
918	/* towards the root */	1089	/* towards the root */
919	void inline_speed	1090	inline_speed void
920	upheap (ANHE *heap, int k)	1091	upheap (ANHE *heap, int k)
921	{	1092	{
922	ANHE he = heap [k];	1093	ANHE he = heap [k];
923		1094
924	for (;;)	1095	for (;;)
…		…
935		1106
936	heap [k] = he;	1107	heap [k] = he;
937	ev_active (ANHE_w (he)) = k;	1108	ev_active (ANHE_w (he)) = k;
938	}	1109	}
939		1110
940	void inline_size	1111	/* move an element suitably so it is in a correct place */
		1112	inline_size void
941	adjustheap (ANHE *heap, int N, int k)	1113	adjustheap (ANHE *heap, int N, int k)
942	{	1114	{
943	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1115	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
944	upheap (heap, k);	1116	upheap (heap, k);
945	else	1117	else
946	downheap (heap, N, k);	1118	downheap (heap, N, k);
947	}	1119	}
948		1120
949	/* rebuild the heap: this function is used only once and executed rarely */	1121	/* rebuild the heap: this function is used only once and executed rarely */
950	void inline_size	1122	inline_size void
951	reheap (ANHE *heap, int N)	1123	reheap (ANHE *heap, int N)
952	{	1124	{
953	int i;	1125	int i;
954		1126
955	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */	1127	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
…		…
958	upheap (heap, i + HEAP0);	1130	upheap (heap, i + HEAP0);
959	}	1131	}
960		1132
961	/*****************************************************************************/	1133	/*****************************************************************************/
962		1134
		1135	/* associate signal watchers to a signal signal */
963	typedef struct	1136	typedef struct
964	{	1137	{
965	WL head;	1138	WL head;
966	EV_ATOMIC_T gotsig;	1139	EV_ATOMIC_T gotsig;
967	} ANSIG;	1140	} ANSIG;
…		…
969	static ANSIG *signals;	1142	static ANSIG *signals;
970	static int signalmax;	1143	static int signalmax;
971		1144
972	static EV_ATOMIC_T gotsig;	1145	static EV_ATOMIC_T gotsig;
973		1146
974	void inline_size
975	signals_init (ANSIG *base, int count)
976	{
977	while (count--)
978	{
979	base->head = 0;
980	base->gotsig = 0;
981
982	++base;
983	}
984	}
985
986	/*****************************************************************************/	1147	/*****************************************************************************/
987		1148
988	void inline_speed	1149	/* used to prepare libev internal fd's */
		1150	/* this is not fork-safe */
		1151	inline_speed void
989	fd_intern (int fd)	1152	fd_intern (int fd)
990	{	1153	{
991	#ifdef _WIN32	1154	#ifdef _WIN32
992	unsigned long arg = 1;	1155	unsigned long arg = 1;
993	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1156	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
998	}	1161	}
999		1162
1000	static void noinline	1163	static void noinline
1001	evpipe_init (EV_P)	1164	evpipe_init (EV_P)
1002	{	1165	{
1003	if (!ev_is_active (&pipeev))	1166	if (!ev_is_active (&pipe_w))
1004	{	1167	{
1005	#if EV_USE_EVENTFD	1168	#if EV_USE_EVENTFD
		1169	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1170	if (evfd < 0 && errno == EINVAL)
1006	if ((evfd = eventfd (0, 0)) >= 0)	1171	evfd = eventfd (0, 0);
		1172
		1173	if (evfd >= 0)
1007	{	1174	{
1008	evpipe [0] = -1;	1175	evpipe [0] = -1;
1009	fd_intern (evfd);	1176	fd_intern (evfd); /* doing it twice doesn't hurt */
1010	ev_io_set (&pipeev, evfd, EV_READ);	1177	ev_io_set (&pipe_w, evfd, EV_READ);
1011	}	1178	}
1012	else	1179	else
1013	#endif	1180	#endif
1014	{	1181	{
1015	while (pipe (evpipe))	1182	while (pipe (evpipe))
1016	syserr ("(libev) error creating signal/async pipe");	1183	ev_syserr ("(libev) error creating signal/async pipe");
1017		1184
1018	fd_intern (evpipe [0]);	1185	fd_intern (evpipe [0]);
1019	fd_intern (evpipe [1]);	1186	fd_intern (evpipe [1]);
1020	ev_io_set (&pipeev, evpipe [0], EV_READ);	1187	ev_io_set (&pipe_w, evpipe [0], EV_READ);
1021	}	1188	}
1022		1189
1023	ev_io_start (EV_A_ &pipeev);	1190	ev_io_start (EV_A_ &pipe_w);
1024	ev_unref (EV_A); /* watcher should not keep loop alive */	1191	ev_unref (EV_A); /* watcher should not keep loop alive */
1025	}	1192	}
1026	}	1193	}
1027		1194
1028	void inline_size	1195	inline_size void
1029	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1196	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1030	{	1197	{
1031	if (!*flag)	1198	if (!*flag)
1032	{	1199	{
1033	int old_errno = errno; /* save errno because write might clobber it */	1200	int old_errno = errno; /* save errno because write might clobber it */
…		…
1046		1213
1047	errno = old_errno;	1214	errno = old_errno;
1048	}	1215	}
1049	}	1216	}
1050		1217
		1218	/* called whenever the libev signal pipe */
		1219	/* got some events (signal, async) */
1051	static void	1220	static void
1052	pipecb (EV_P_ ev_io *iow, int revents)	1221	pipecb (EV_P_ ev_io *iow, int revents)
1053	{	1222	{
1054	#if EV_USE_EVENTFD	1223	#if EV_USE_EVENTFD
1055	if (evfd >= 0)	1224	if (evfd >= 0)
…		…
1111	ev_feed_signal_event (EV_P_ int signum)	1280	ev_feed_signal_event (EV_P_ int signum)
1112	{	1281	{
1113	WL w;	1282	WL w;
1114		1283
1115	#if EV_MULTIPLICITY	1284	#if EV_MULTIPLICITY
1116	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1285	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1117	#endif	1286	#endif
1118		1287
1119	--signum;	1288	--signum;
1120		1289
1121	if (signum < 0 || signum >= signalmax)	1290	if (signum < 0 || signum >= signalmax)
…		…
1125		1294
1126	for (w = signals [signum].head; w; w = w->next)	1295	for (w = signals [signum].head; w; w = w->next)
1127	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1296	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1128	}	1297	}
1129		1298
		1299	#if EV_USE_SIGNALFD
		1300	static void
		1301	sigfdcb (EV_P_ ev_io *iow, int revents)
		1302	{
		1303	struct signalfd_siginfo si[4], *sip;
		1304
		1305	for (;;)
		1306	{
		1307	ssize_t res = read (sigfd, si, sizeof (si));
		1308
		1309	/* not ISO-C, as res might be -1, but works with SuS */
		1310	for (sip = si; (char *)sip < (char *)si + res; ++sip)
		1311	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1312
		1313	if (res < (ssize_t)sizeof (si))
		1314	break;
		1315	}
		1316	}
		1317	#endif
		1318
1130	/*****************************************************************************/	1319	/*****************************************************************************/
1131		1320
1132	static WL childs [EV_PID_HASHSIZE];	1321	static WL childs [EV_PID_HASHSIZE];
1133		1322
1134	#ifndef _WIN32	1323	#ifndef _WIN32
…		…
1137		1326
1138	#ifndef WIFCONTINUED	1327	#ifndef WIFCONTINUED
1139	# define WIFCONTINUED(status) 0	1328	# define WIFCONTINUED(status) 0
1140	#endif	1329	#endif
1141		1330
1142	void inline_speed	1331	/* handle a single child status event */
		1332	inline_speed void
1143	child_reap (EV_P_ int chain, int pid, int status)	1333	child_reap (EV_P_ int chain, int pid, int status)
1144	{	1334	{
1145	ev_child *w;	1335	ev_child *w;
1146	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1336	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1147		1337
…		…
1160		1350
1161	#ifndef WCONTINUED	1351	#ifndef WCONTINUED
1162	# define WCONTINUED 0	1352	# define WCONTINUED 0
1163	#endif	1353	#endif
1164		1354
		1355	/* called on sigchld etc., calls waitpid */
1165	static void	1356	static void
1166	childcb (EV_P_ ev_signal *sw, int revents)	1357	childcb (EV_P_ ev_signal *sw, int revents)
1167	{	1358	{
1168	int pid, status;	1359	int pid, status;
1169		1360
…		…
1250	/* kqueue is borked on everything but netbsd apparently */	1441	/* kqueue is borked on everything but netbsd apparently */
1251	/* it usually doesn't work correctly on anything but sockets and pipes */	1442	/* it usually doesn't work correctly on anything but sockets and pipes */
1252	flags &= ~EVBACKEND_KQUEUE;	1443	flags &= ~EVBACKEND_KQUEUE;
1253	#endif	1444	#endif
1254	#ifdef __APPLE__	1445	#ifdef __APPLE__
1255	// flags &= ~EVBACKEND_KQUEUE; for documentation	1446	/* only select works correctly on that "unix-certified" platform */
1256	flags &= ~EVBACKEND_POLL;	1447	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1448	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1257	#endif	1449	#endif
1258		1450
1259	return flags;	1451	return flags;
1260	}	1452	}
1261		1453
…		…
1275	ev_backend (EV_P)	1467	ev_backend (EV_P)
1276	{	1468	{
1277	return backend;	1469	return backend;
1278	}	1470	}
1279		1471
		1472	#if EV_MINIMAL < 2
1280	unsigned int	1473	unsigned int
1281	ev_loop_count (EV_P)	1474	ev_loop_count (EV_P)
1282	{	1475	{
1283	return loop_count;	1476	return loop_count;
1284	}	1477	}
1285		1478
		1479	unsigned int
		1480	ev_loop_depth (EV_P)
		1481	{
		1482	return loop_depth;
		1483	}
		1484
1286	void	1485	void
1287	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1486	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1288	{	1487	{
1289	io_blocktime = interval;	1488	io_blocktime = interval;
1290	}	1489	}
…		…
1293	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1492	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1294	{	1493	{
1295	timeout_blocktime = interval;	1494	timeout_blocktime = interval;
1296	}	1495	}
1297		1496
		1497	void
		1498	ev_set_userdata (EV_P_ void *data)
		1499	{
		1500	userdata = data;
		1501	}
		1502
		1503	void *
		1504	ev_userdata (EV_P)
		1505	{
		1506	return userdata;
		1507	}
		1508
		1509	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1510	{
		1511	invoke_cb = invoke_pending_cb;
		1512	}
		1513
		1514	void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
		1515	{
		1516	release_cb = release;
		1517	acquire_cb = acquire;
		1518	}
		1519	#endif
		1520
		1521	/* initialise a loop structure, must be zero-initialised */
1298	static void noinline	1522	static void noinline
1299	loop_init (EV_P_ unsigned int flags)	1523	loop_init (EV_P_ unsigned int flags)
1300	{	1524	{
1301	if (!backend)	1525	if (!backend)
1302	{	1526	{
		1527	#if EV_USE_REALTIME
		1528	if (!have_realtime)
		1529	{
		1530	struct timespec ts;
		1531
		1532	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1533	have_realtime = 1;
		1534	}
		1535	#endif
		1536
1303	#if EV_USE_MONOTONIC	1537	#if EV_USE_MONOTONIC
		1538	if (!have_monotonic)
1304	{	1539	{
1305	struct timespec ts;	1540	struct timespec ts;
		1541
1306	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1542	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1307	have_monotonic = 1;	1543	have_monotonic = 1;
1308	}	1544	}
1309	#endif	1545	#endif
1310		1546
1311	ev_rt_now = ev_time ();	1547	ev_rt_now = ev_time ();
1312	mn_now = get_clock ();	1548	mn_now = get_clock ();
1313	now_floor = mn_now;	1549	now_floor = mn_now;
1314	rtmn_diff = ev_rt_now - mn_now;	1550	rtmn_diff = ev_rt_now - mn_now;
		1551	#if EV_MINIMAL < 2
		1552	invoke_cb = ev_invoke_pending;
		1553	#endif
1315		1554
1316	io_blocktime = 0.;	1555	io_blocktime = 0.;
1317	timeout_blocktime = 0.;	1556	timeout_blocktime = 0.;
1318	backend = 0;	1557	backend = 0;
1319	backend_fd = -1;	1558	backend_fd = -1;
1320	gotasync = 0;	1559	gotasync = 0;
1321	#if EV_USE_INOTIFY	1560	#if EV_USE_INOTIFY
1322	fs_fd = -2;	1561	fs_fd = -2;
1323	#endif	1562	#endif
		1563	#if EV_USE_SIGNALFD
		1564	sigfd = -2;
		1565	#endif
1324		1566
1325	/* pid check not overridable via env */	1567	/* pid check not overridable via env */
1326	#ifndef _WIN32	1568	#ifndef _WIN32
1327	if (flags & EVFLAG_FORKCHECK)	1569	if (flags & EVFLAG_FORKCHECK)
1328	curpid = getpid ();	1570	curpid = getpid ();
…		…
1350	#endif	1592	#endif
1351	#if EV_USE_SELECT	1593	#if EV_USE_SELECT
1352	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1594	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1353	#endif	1595	#endif
1354		1596
		1597	ev_prepare_init (&pending_w, pendingcb);
		1598
1355	ev_init (&pipeev, pipecb);	1599	ev_init (&pipe_w, pipecb);
1356	ev_set_priority (&pipeev, EV_MAXPRI);	1600	ev_set_priority (&pipe_w, EV_MAXPRI);
1357	}	1601	}
1358	}	1602	}
1359		1603
		1604	/* free up a loop structure */
1360	static void noinline	1605	static void noinline
1361	loop_destroy (EV_P)	1606	loop_destroy (EV_P)
1362	{	1607	{
1363	int i;	1608	int i;
1364		1609
1365	if (ev_is_active (&pipeev))	1610	if (ev_is_active (&pipe_w))
1366	{	1611	{
1367	ev_ref (EV_A); /* signal watcher */	1612	/*ev_ref (EV_A);*/
1368	ev_io_stop (EV_A_ &pipeev);	1613	/*ev_io_stop (EV_A_ &pipe_w);*/
1369		1614
1370	#if EV_USE_EVENTFD	1615	#if EV_USE_EVENTFD
1371	if (evfd >= 0)	1616	if (evfd >= 0)
1372	close (evfd);	1617	close (evfd);
1373	#endif	1618	#endif
…		…
1377	close (evpipe [0]);	1622	close (evpipe [0]);
1378	close (evpipe [1]);	1623	close (evpipe [1]);
1379	}	1624	}
1380	}	1625	}
1381		1626
		1627	#if EV_USE_SIGNALFD
		1628	if (ev_is_active (&sigfd_w))
		1629	{
		1630	/*ev_ref (EV_A);*/
		1631	/*ev_io_stop (EV_A_ &sigfd_w);*/
		1632
		1633	close (sigfd);
		1634	}
		1635	#endif
		1636
1382	#if EV_USE_INOTIFY	1637	#if EV_USE_INOTIFY
1383	if (fs_fd >= 0)	1638	if (fs_fd >= 0)
1384	close (fs_fd);	1639	close (fs_fd);
1385	#endif	1640	#endif
1386		1641
…		…
1409	#if EV_IDLE_ENABLE	1664	#if EV_IDLE_ENABLE
1410	array_free (idle, [i]);	1665	array_free (idle, [i]);
1411	#endif	1666	#endif
1412	}	1667	}
1413		1668
1414	ev_free (anfds); anfdmax = 0;	1669	ev_free (anfds); anfds = 0; anfdmax = 0;
1415		1670
1416	/* have to use the microsoft-never-gets-it-right macro */	1671	/* have to use the microsoft-never-gets-it-right macro */
		1672	array_free (rfeed, EMPTY);
1417	array_free (fdchange, EMPTY);	1673	array_free (fdchange, EMPTY);
1418	array_free (timer, EMPTY);	1674	array_free (timer, EMPTY);
1419	#if EV_PERIODIC_ENABLE	1675	#if EV_PERIODIC_ENABLE
1420	array_free (periodic, EMPTY);	1676	array_free (periodic, EMPTY);
1421	#endif	1677	#endif
…		…
1430		1686
1431	backend = 0;	1687	backend = 0;
1432	}	1688	}
1433		1689
1434	#if EV_USE_INOTIFY	1690	#if EV_USE_INOTIFY
1435	void inline_size infy_fork (EV_P);	1691	inline_size void infy_fork (EV_P);
1436	#endif	1692	#endif
1437		1693
1438	void inline_size	1694	inline_size void
1439	loop_fork (EV_P)	1695	loop_fork (EV_P)
1440	{	1696	{
1441	#if EV_USE_PORT	1697	#if EV_USE_PORT
1442	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1698	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1443	#endif	1699	#endif
…		…
1449	#endif	1705	#endif
1450	#if EV_USE_INOTIFY	1706	#if EV_USE_INOTIFY
1451	infy_fork (EV_A);	1707	infy_fork (EV_A);
1452	#endif	1708	#endif
1453		1709
1454	if (ev_is_active (&pipeev))	1710	if (ev_is_active (&pipe_w))
1455	{	1711	{
1456	/* this "locks" the handlers against writing to the pipe */	1712	/* this "locks" the handlers against writing to the pipe */
1457	/* while we modify the fd vars */	1713	/* while we modify the fd vars */
1458	gotsig = 1;	1714	gotsig = 1;
1459	#if EV_ASYNC_ENABLE	1715	#if EV_ASYNC_ENABLE
1460	gotasync = 1;	1716	gotasync = 1;
1461	#endif	1717	#endif
1462		1718
1463	ev_ref (EV_A);	1719	ev_ref (EV_A);
1464	ev_io_stop (EV_A_ &pipeev);	1720	ev_io_stop (EV_A_ &pipe_w);
1465		1721
1466	#if EV_USE_EVENTFD	1722	#if EV_USE_EVENTFD
1467	if (evfd >= 0)	1723	if (evfd >= 0)
1468	close (evfd);	1724	close (evfd);
1469	#endif	1725	#endif
…		…
1474	close (evpipe [1]);	1730	close (evpipe [1]);
1475	}	1731	}
1476		1732
1477	evpipe_init (EV_A);	1733	evpipe_init (EV_A);
1478	/* now iterate over everything, in case we missed something */	1734	/* now iterate over everything, in case we missed something */
1479	pipecb (EV_A_ &pipeev, EV_READ);	1735	pipecb (EV_A_ &pipe_w, EV_READ);
1480	}	1736	}
1481		1737
1482	postfork = 0;	1738	postfork = 0;
1483	}	1739	}
1484		1740
…		…
1488	ev_loop_new (unsigned int flags)	1744	ev_loop_new (unsigned int flags)
1489	{	1745	{
1490	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1746	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1491		1747
1492	memset (loop, 0, sizeof (struct ev_loop));	1748	memset (loop, 0, sizeof (struct ev_loop));
1493
1494	loop_init (EV_A_ flags);	1749	loop_init (EV_A_ flags);
1495		1750
1496	if (ev_backend (EV_A))	1751	if (ev_backend (EV_A))
1497	return loop;	1752	return loop;
1498		1753
…		…
1509	void	1764	void
1510	ev_loop_fork (EV_P)	1765	ev_loop_fork (EV_P)
1511	{	1766	{
1512	postfork = 1; /* must be in line with ev_default_fork */	1767	postfork = 1; /* must be in line with ev_default_fork */
1513	}	1768	}
		1769	#endif /* multiplicity */
1514		1770
1515	#if EV_VERIFY	1771	#if EV_VERIFY
1516	static void noinline	1772	static void noinline
1517	verify_watcher (EV_P_ W w)	1773	verify_watcher (EV_P_ W w)
1518	{	1774	{
1519	assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));	1775	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1520		1776
1521	if (w->pending)	1777	if (w->pending)
1522	assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));	1778	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1523	}	1779	}
1524		1780
1525	static void noinline	1781	static void noinline
1526	verify_heap (EV_P_ ANHE *heap, int N)	1782	verify_heap (EV_P_ ANHE *heap, int N)
1527	{	1783	{
1528	int i;	1784	int i;
1529		1785
1530	for (i = HEAP0; i < N + HEAP0; ++i)	1786	for (i = HEAP0; i < N + HEAP0; ++i)
1531	{	1787	{
1532	assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));	1788	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1533	assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));	1789	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1534	assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));	1790	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1535		1791
1536	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));	1792	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1537	}	1793	}
1538	}	1794	}
1539		1795
1540	static void noinline	1796	static void noinline
1541	array_verify (EV_P_ W *ws, int cnt)	1797	array_verify (EV_P_ W *ws, int cnt)
1542	{	1798	{
1543	while (cnt--)	1799	while (cnt--)
1544	{	1800	{
1545	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));	1801	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1546	verify_watcher (EV_A_ ws [cnt]);	1802	verify_watcher (EV_A_ ws [cnt]);
1547	}	1803	}
1548	}	1804	}
1549	#endif	1805	#endif
1550		1806
		1807	#if EV_MINIMAL < 2
1551	void	1808	void
1552	ev_loop_verify (EV_P)	1809	ev_loop_verify (EV_P)
1553	{	1810	{
1554	#if EV_VERIFY	1811	#if EV_VERIFY
1555	int i;	1812	int i;
…		…
1557		1814
1558	assert (activecnt >= -1);	1815	assert (activecnt >= -1);
1559		1816
1560	assert (fdchangemax >= fdchangecnt);	1817	assert (fdchangemax >= fdchangecnt);
1561	for (i = 0; i < fdchangecnt; ++i)	1818	for (i = 0; i < fdchangecnt; ++i)
1562	assert (("negative fd in fdchanges", fdchanges [i] >= 0));	1819	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1563		1820
1564	assert (anfdmax >= 0);	1821	assert (anfdmax >= 0);
1565	for (i = 0; i < anfdmax; ++i)	1822	for (i = 0; i < anfdmax; ++i)
1566	for (w = anfds [i].head; w; w = w->next)	1823	for (w = anfds [i].head; w; w = w->next)
1567	{	1824	{
1568	verify_watcher (EV_A_ (W)w);	1825	verify_watcher (EV_A_ (W)w);
1569	assert (("inactive fd watcher on anfd list", ev_active (w) == 1));	1826	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1570	assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));	1827	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1571	}	1828	}
1572		1829
1573	assert (timermax >= timercnt);	1830	assert (timermax >= timercnt);
1574	verify_heap (EV_A_ timers, timercnt);	1831	verify_heap (EV_A_ timers, timercnt);
1575		1832
…		…
1608	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1865	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1609	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)	1866	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1610	# endif	1867	# endif
1611	#endif	1868	#endif
1612	}	1869	}
1613		1870	#endif
1614	#endif /* multiplicity */
1615		1871
1616	#if EV_MULTIPLICITY	1872	#if EV_MULTIPLICITY
1617	struct ev_loop *	1873	struct ev_loop *
1618	ev_default_loop_init (unsigned int flags)	1874	ev_default_loop_init (unsigned int flags)
1619	#else	1875	#else
…		…
1652	{	1908	{
1653	#if EV_MULTIPLICITY	1909	#if EV_MULTIPLICITY
1654	struct ev_loop *loop = ev_default_loop_ptr;	1910	struct ev_loop *loop = ev_default_loop_ptr;
1655	#endif	1911	#endif
1656		1912
		1913	ev_default_loop_ptr = 0;
		1914
1657	#ifndef _WIN32	1915	#ifndef _WIN32
1658	ev_ref (EV_A); /* child watcher */	1916	ev_ref (EV_A); /* child watcher */
1659	ev_signal_stop (EV_A_ &childev);	1917	ev_signal_stop (EV_A_ &childev);
1660	#endif	1918	#endif
1661		1919
…		…
1667	{	1925	{
1668	#if EV_MULTIPLICITY	1926	#if EV_MULTIPLICITY
1669	struct ev_loop *loop = ev_default_loop_ptr;	1927	struct ev_loop *loop = ev_default_loop_ptr;
1670	#endif	1928	#endif
1671		1929
1672	if (backend)
1673	postfork = 1; /* must be in line with ev_loop_fork */	1930	postfork = 1; /* must be in line with ev_loop_fork */
1674	}	1931	}
1675		1932
1676	/*****************************************************************************/	1933	/*****************************************************************************/
1677		1934
1678	void	1935	void
1679	ev_invoke (EV_P_ void *w, int revents)	1936	ev_invoke (EV_P_ void *w, int revents)
1680	{	1937	{
1681	EV_CB_INVOKE ((W)w, revents);	1938	EV_CB_INVOKE ((W)w, revents);
1682	}	1939	}
1683		1940
1684	void inline_speed	1941	unsigned int
1685	call_pending (EV_P)	1942	ev_pending_count (EV_P)
		1943	{
		1944	int pri;
		1945	unsigned int count = 0;
		1946
		1947	for (pri = NUMPRI; pri--; )
		1948	count += pendingcnt [pri];
		1949
		1950	return count;
		1951	}
		1952
		1953	void noinline
		1954	ev_invoke_pending (EV_P)
1686	{	1955	{
1687	int pri;	1956	int pri;
1688		1957
1689	for (pri = NUMPRI; pri--; )	1958	for (pri = NUMPRI; pri--; )
1690	while (pendingcnt [pri])	1959	while (pendingcnt [pri])
1691	{	1960	{
1692	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1961	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1693		1962
1694	if (expect_true (p->w))
1695	{
1696	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1963	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1964	/* ^ this is no longer true, as pending_w could be here */
1697		1965
1698	p->w->pending = 0;	1966	p->w->pending = 0;
1699	EV_CB_INVOKE (p->w, p->events);	1967	EV_CB_INVOKE (p->w, p->events);
1700	EV_FREQUENT_CHECK;	1968	EV_FREQUENT_CHECK;
1701	}
1702	}	1969	}
1703	}	1970	}
1704		1971
1705	#if EV_IDLE_ENABLE	1972	#if EV_IDLE_ENABLE
1706	void inline_size	1973	/* make idle watchers pending. this handles the "call-idle */
		1974	/* only when higher priorities are idle" logic */
		1975	inline_size void
1707	idle_reify (EV_P)	1976	idle_reify (EV_P)
1708	{	1977	{
1709	if (expect_false (idleall))	1978	if (expect_false (idleall))
1710	{	1979	{
1711	int pri;	1980	int pri;
…		…
1723	}	1992	}
1724	}	1993	}
1725	}	1994	}
1726	#endif	1995	#endif
1727		1996
1728	void inline_size	1997	/* make timers pending */
		1998	inline_size void
1729	timers_reify (EV_P)	1999	timers_reify (EV_P)
1730	{	2000	{
1731	EV_FREQUENT_CHECK;	2001	EV_FREQUENT_CHECK;
1732		2002
1733	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	2003	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1734	{	2004	{
1735	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	2005	do
1736
1737	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1738
1739	/* first reschedule or stop timer */
1740	if (w->repeat)
1741	{	2006	{
		2007	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		2008
		2009	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		2010
		2011	/* first reschedule or stop timer */
		2012	if (w->repeat)
		2013	{
1742	ev_at (w) += w->repeat;	2014	ev_at (w) += w->repeat;
1743	if (ev_at (w) < mn_now)	2015	if (ev_at (w) < mn_now)
1744	ev_at (w) = mn_now;	2016	ev_at (w) = mn_now;
1745		2017
1746	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	2018	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1747		2019
1748	ANHE_at_cache (timers [HEAP0]);	2020	ANHE_at_cache (timers [HEAP0]);
1749	downheap (timers, timercnt, HEAP0);	2021	downheap (timers, timercnt, HEAP0);
		2022	}
		2023	else
		2024	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		2025
		2026	EV_FREQUENT_CHECK;
		2027	feed_reverse (EV_A_ (W)w);
1750	}	2028	}
1751	else	2029	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1752	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1753		2030
1754	EV_FREQUENT_CHECK;
1755	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	2031	feed_reverse_done (EV_A_ EV_TIMEOUT);
1756	}	2032	}
1757	}	2033	}
1758		2034
1759	#if EV_PERIODIC_ENABLE	2035	#if EV_PERIODIC_ENABLE
1760	void inline_size	2036	/* make periodics pending */
		2037	inline_size void
1761	periodics_reify (EV_P)	2038	periodics_reify (EV_P)
1762	{	2039	{
1763	EV_FREQUENT_CHECK;	2040	EV_FREQUENT_CHECK;
1764		2041
1765	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	2042	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1766	{	2043	{
1767	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	2044	int feed_count = 0;
1768		2045
1769	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	2046	do
1770
1771	/* first reschedule or stop timer */
1772	if (w->reschedule_cb)
1773	{	2047	{
		2048	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		2049
		2050	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		2051
		2052	/* first reschedule or stop timer */
		2053	if (w->reschedule_cb)
		2054	{
1774	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2055	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1775		2056
1776	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));	2057	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1777		2058
1778	ANHE_at_cache (periodics [HEAP0]);	2059	ANHE_at_cache (periodics [HEAP0]);
1779	downheap (periodics, periodiccnt, HEAP0);	2060	downheap (periodics, periodiccnt, HEAP0);
		2061	}
		2062	else if (w->interval)
		2063	{
		2064	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2065	/* if next trigger time is not sufficiently in the future, put it there */
		2066	/* this might happen because of floating point inexactness */
		2067	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		2068	{
		2069	ev_at (w) += w->interval;
		2070
		2071	/* if interval is unreasonably low we might still have a time in the past */
		2072	/* so correct this. this will make the periodic very inexact, but the user */
		2073	/* has effectively asked to get triggered more often than possible */
		2074	if (ev_at (w) < ev_rt_now)
		2075	ev_at (w) = ev_rt_now;
		2076	}
		2077
		2078	ANHE_at_cache (periodics [HEAP0]);
		2079	downheap (periodics, periodiccnt, HEAP0);
		2080	}
		2081	else
		2082	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		2083
		2084	EV_FREQUENT_CHECK;
		2085	feed_reverse (EV_A_ (W)w);
1780	}	2086	}
1781	else if (w->interval)	2087	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1782	{
1783	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1784	/* if next trigger time is not sufficiently in the future, put it there */
1785	/* this might happen because of floating point inexactness */
1786	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1787	{
1788	ev_at (w) += w->interval;
1789		2088
1790	/* if interval is unreasonably low we might still have a time in the past */
1791	/* so correct this. this will make the periodic very inexact, but the user */
1792	/* has effectively asked to get triggered more often than possible */
1793	if (ev_at (w) < ev_rt_now)
1794	ev_at (w) = ev_rt_now;
1795	}
1796
1797	ANHE_at_cache (periodics [HEAP0]);
1798	downheap (periodics, periodiccnt, HEAP0);
1799	}
1800	else
1801	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1802
1803	EV_FREQUENT_CHECK;
1804	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	2089	feed_reverse_done (EV_A_ EV_PERIODIC);
1805	}	2090	}
1806	}	2091	}
1807		2092
		2093	/* simply recalculate all periodics */
		2094	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1808	static void noinline	2095	static void noinline
1809	periodics_reschedule (EV_P)	2096	periodics_reschedule (EV_P)
1810	{	2097	{
1811	int i;	2098	int i;
1812		2099
…		…
1825		2112
1826	reheap (periodics, periodiccnt);	2113	reheap (periodics, periodiccnt);
1827	}	2114	}
1828	#endif	2115	#endif
1829		2116
1830	void inline_speed	2117	/* adjust all timers by a given offset */
		2118	static void noinline
		2119	timers_reschedule (EV_P_ ev_tstamp adjust)
		2120	{
		2121	int i;
		2122
		2123	for (i = 0; i < timercnt; ++i)
		2124	{
		2125	ANHE *he = timers + i + HEAP0;
		2126	ANHE_w (*he)->at += adjust;
		2127	ANHE_at_cache (*he);
		2128	}
		2129	}
		2130
		2131	/* fetch new monotonic and realtime times from the kernel */
		2132	/* also detetc if there was a timejump, and act accordingly */
		2133	inline_speed void
1831	time_update (EV_P_ ev_tstamp max_block)	2134	time_update (EV_P_ ev_tstamp max_block)
1832	{	2135	{
1833	int i;
1834
1835	#if EV_USE_MONOTONIC	2136	#if EV_USE_MONOTONIC
1836	if (expect_true (have_monotonic))	2137	if (expect_true (have_monotonic))
1837	{	2138	{
		2139	int i;
1838	ev_tstamp odiff = rtmn_diff;	2140	ev_tstamp odiff = rtmn_diff;
1839		2141
1840	mn_now = get_clock ();	2142	mn_now = get_clock ();
1841		2143
1842	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2144	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1868	ev_rt_now = ev_time ();	2170	ev_rt_now = ev_time ();
1869	mn_now = get_clock ();	2171	mn_now = get_clock ();
1870	now_floor = mn_now;	2172	now_floor = mn_now;
1871	}	2173	}
1872		2174
		2175	/* no timer adjustment, as the monotonic clock doesn't jump */
		2176	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1873	# if EV_PERIODIC_ENABLE	2177	# if EV_PERIODIC_ENABLE
1874	periodics_reschedule (EV_A);	2178	periodics_reschedule (EV_A);
1875	# endif	2179	# endif
1876	/* no timer adjustment, as the monotonic clock doesn't jump */
1877	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1878	}	2180	}
1879	else	2181	else
1880	#endif	2182	#endif
1881	{	2183	{
1882	ev_rt_now = ev_time ();	2184	ev_rt_now = ev_time ();
1883		2185
1884	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2186	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1885	{	2187	{
		2188	/* adjust timers. this is easy, as the offset is the same for all of them */
		2189	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1886	#if EV_PERIODIC_ENABLE	2190	#if EV_PERIODIC_ENABLE
1887	periodics_reschedule (EV_A);	2191	periodics_reschedule (EV_A);
1888	#endif	2192	#endif
1889	/* adjust timers. this is easy, as the offset is the same for all of them */
1890	for (i = 0; i < timercnt; ++i)
1891	{
1892	ANHE *he = timers + i + HEAP0;
1893	ANHE_w (*he)->at += ev_rt_now - mn_now;
1894	ANHE_at_cache (*he);
1895	}
1896	}	2193	}
1897		2194
1898	mn_now = ev_rt_now;	2195	mn_now = ev_rt_now;
1899	}	2196	}
1900	}	2197	}
1901		2198
1902	void	2199	void
1903	ev_ref (EV_P)
1904	{
1905	++activecnt;
1906	}
1907
1908	void
1909	ev_unref (EV_P)
1910	{
1911	--activecnt;
1912	}
1913
1914	void
1915	ev_now_update (EV_P)
1916	{
1917	time_update (EV_A_ 1e100);
1918	}
1919
1920	static int loop_done;
1921
1922	void
1923	ev_loop (EV_P_ int flags)	2200	ev_loop (EV_P_ int flags)
1924	{	2201	{
		2202	#if EV_MINIMAL < 2
		2203	++loop_depth;
		2204	#endif
		2205
		2206	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2207
1925	loop_done = EVUNLOOP_CANCEL;	2208	loop_done = EVUNLOOP_CANCEL;
1926		2209
1927	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2210	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1928		2211
1929	do	2212	do
1930	{	2213	{
1931	#if EV_VERIFY >= 2	2214	#if EV_VERIFY >= 2
1932	ev_loop_verify (EV_A);	2215	ev_loop_verify (EV_A);
…		…
1945	/* we might have forked, so queue fork handlers */	2228	/* we might have forked, so queue fork handlers */
1946	if (expect_false (postfork))	2229	if (expect_false (postfork))
1947	if (forkcnt)	2230	if (forkcnt)
1948	{	2231	{
1949	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2232	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1950	call_pending (EV_A);	2233	EV_INVOKE_PENDING;
1951	}	2234	}
1952	#endif	2235	#endif
1953		2236
1954	/* queue prepare watchers (and execute them) */	2237	/* queue prepare watchers (and execute them) */
1955	if (expect_false (preparecnt))	2238	if (expect_false (preparecnt))
1956	{	2239	{
1957	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2240	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1958	call_pending (EV_A);	2241	EV_INVOKE_PENDING;
1959	}	2242	}
1960		2243
1961	if (expect_false (!activecnt))	2244	if (expect_false (loop_done))
1962	break;	2245	break;
1963		2246
1964	/* we might have forked, so reify kernel state if necessary */	2247	/* we might have forked, so reify kernel state if necessary */
1965	if (expect_false (postfork))	2248	if (expect_false (postfork))
1966	loop_fork (EV_A);	2249	loop_fork (EV_A);
…		…
1973	ev_tstamp waittime = 0.;	2256	ev_tstamp waittime = 0.;
1974	ev_tstamp sleeptime = 0.;	2257	ev_tstamp sleeptime = 0.;
1975		2258
1976	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2259	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1977	{	2260	{
		2261	/* remember old timestamp for io_blocktime calculation */
		2262	ev_tstamp prev_mn_now = mn_now;
		2263
1978	/* update time to cancel out callback processing overhead */	2264	/* update time to cancel out callback processing overhead */
1979	time_update (EV_A_ 1e100);	2265	time_update (EV_A_ 1e100);
1980		2266
1981	waittime = MAX_BLOCKTIME;	2267	waittime = MAX_BLOCKTIME;
1982		2268
…		…
1992	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2278	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1993	if (waittime > to) waittime = to;	2279	if (waittime > to) waittime = to;
1994	}	2280	}
1995	#endif	2281	#endif
1996		2282
		2283	/* don't let timeouts decrease the waittime below timeout_blocktime */
1997	if (expect_false (waittime < timeout_blocktime))	2284	if (expect_false (waittime < timeout_blocktime))
1998	waittime = timeout_blocktime;	2285	waittime = timeout_blocktime;
1999		2286
2000	sleeptime = waittime - backend_fudge;	2287	/* extra check because io_blocktime is commonly 0 */
2001
2002	if (expect_true (sleeptime > io_blocktime))	2288	if (expect_false (io_blocktime))
2003	sleeptime = io_blocktime;
2004
2005	if (sleeptime)
2006	{	2289	{
		2290	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2291
		2292	if (sleeptime > waittime - backend_fudge)
		2293	sleeptime = waittime - backend_fudge;
		2294
		2295	if (expect_true (sleeptime > 0.))
		2296	{
2007	ev_sleep (sleeptime);	2297	ev_sleep (sleeptime);
2008	waittime -= sleeptime;	2298	waittime -= sleeptime;
		2299	}
2009	}	2300	}
2010	}	2301	}
2011		2302
		2303	#if EV_MINIMAL < 2
2012	++loop_count;	2304	++loop_count;
		2305	#endif
		2306	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2013	backend_poll (EV_A_ waittime);	2307	backend_poll (EV_A_ waittime);
		2308	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2014		2309
2015	/* update ev_rt_now, do magic */	2310	/* update ev_rt_now, do magic */
2016	time_update (EV_A_ waittime + sleeptime);	2311	time_update (EV_A_ waittime + sleeptime);
2017	}	2312	}
2018		2313
…		…
2029		2324
2030	/* queue check watchers, to be executed first */	2325	/* queue check watchers, to be executed first */
2031	if (expect_false (checkcnt))	2326	if (expect_false (checkcnt))
2032	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2327	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2033		2328
2034	call_pending (EV_A);	2329	EV_INVOKE_PENDING;
2035	}	2330	}
2036	while (expect_true (	2331	while (expect_true (
2037	activecnt	2332	activecnt
2038	&& !loop_done	2333	&& !loop_done
2039	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2334	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2040	));	2335	));
2041		2336
2042	if (loop_done == EVUNLOOP_ONE)	2337	if (loop_done == EVUNLOOP_ONE)
2043	loop_done = EVUNLOOP_CANCEL;	2338	loop_done = EVUNLOOP_CANCEL;
		2339
		2340	#if EV_MINIMAL < 2
		2341	--loop_depth;
		2342	#endif
2044	}	2343	}
2045		2344
2046	void	2345	void
2047	ev_unloop (EV_P_ int how)	2346	ev_unloop (EV_P_ int how)
2048	{	2347	{
2049	loop_done = how;	2348	loop_done = how;
2050	}	2349	}
2051		2350
		2351	void
		2352	ev_ref (EV_P)
		2353	{
		2354	++activecnt;
		2355	}
		2356
		2357	void
		2358	ev_unref (EV_P)
		2359	{
		2360	--activecnt;
		2361	}
		2362
		2363	void
		2364	ev_now_update (EV_P)
		2365	{
		2366	time_update (EV_A_ 1e100);
		2367	}
		2368
		2369	void
		2370	ev_suspend (EV_P)
		2371	{
		2372	ev_now_update (EV_A);
		2373	}
		2374
		2375	void
		2376	ev_resume (EV_P)
		2377	{
		2378	ev_tstamp mn_prev = mn_now;
		2379
		2380	ev_now_update (EV_A);
		2381	timers_reschedule (EV_A_ mn_now - mn_prev);
		2382	#if EV_PERIODIC_ENABLE
		2383	/* TODO: really do this? */
		2384	periodics_reschedule (EV_A);
		2385	#endif
		2386	}
		2387
2052	/*****************************************************************************/	2388	/*****************************************************************************/
		2389	/* singly-linked list management, used when the expected list length is short */
2053		2390
2054	void inline_size	2391	inline_size void
2055	wlist_add (WL *head, WL elem)	2392	wlist_add (WL *head, WL elem)
2056	{	2393	{
2057	elem->next = *head;	2394	elem->next = *head;
2058	*head = elem;	2395	*head = elem;
2059	}	2396	}
2060		2397
2061	void inline_size	2398	inline_size void
2062	wlist_del (WL *head, WL elem)	2399	wlist_del (WL *head, WL elem)
2063	{	2400	{
2064	while (*head)	2401	while (*head)
2065	{	2402	{
2066	if (*head == elem)	2403	if (*head == elem)
…		…
2071		2408
2072	head = &(*head)->next;	2409	head = &(*head)->next;
2073	}	2410	}
2074	}	2411	}
2075		2412
2076	void inline_speed	2413	/* internal, faster, version of ev_clear_pending */
		2414	inline_speed void
2077	clear_pending (EV_P_ W w)	2415	clear_pending (EV_P_ W w)
2078	{	2416	{
2079	if (w->pending)	2417	if (w->pending)
2080	{	2418	{
2081	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2419	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2082	w->pending = 0;	2420	w->pending = 0;
2083	}	2421	}
2084	}	2422	}
2085		2423
2086	int	2424	int
…		…
2090	int pending = w_->pending;	2428	int pending = w_->pending;
2091		2429
2092	if (expect_true (pending))	2430	if (expect_true (pending))
2093	{	2431	{
2094	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2432	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2433	p->w = (W)&pending_w;
2095	w_->pending = 0;	2434	w_->pending = 0;
2096	p->w = 0;
2097	return p->events;	2435	return p->events;
2098	}	2436	}
2099	else	2437	else
2100	return 0;	2438	return 0;
2101	}	2439	}
2102		2440
2103	void inline_size	2441	inline_size void
2104	pri_adjust (EV_P_ W w)	2442	pri_adjust (EV_P_ W w)
2105	{	2443	{
2106	int pri = w->priority;	2444	int pri = ev_priority (w);
2107	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2445	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2108	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2446	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2109	w->priority = pri;	2447	ev_set_priority (w, pri);
2110	}	2448	}
2111		2449
2112	void inline_speed	2450	inline_speed void
2113	ev_start (EV_P_ W w, int active)	2451	ev_start (EV_P_ W w, int active)
2114	{	2452	{
2115	pri_adjust (EV_A_ w);	2453	pri_adjust (EV_A_ w);
2116	w->active = active;	2454	w->active = active;
2117	ev_ref (EV_A);	2455	ev_ref (EV_A);
2118	}	2456	}
2119		2457
2120	void inline_size	2458	inline_size void
2121	ev_stop (EV_P_ W w)	2459	ev_stop (EV_P_ W w)
2122	{	2460	{
2123	ev_unref (EV_A);	2461	ev_unref (EV_A);
2124	w->active = 0;	2462	w->active = 0;
2125	}	2463	}
…		…
2132	int fd = w->fd;	2470	int fd = w->fd;
2133		2471
2134	if (expect_false (ev_is_active (w)))	2472	if (expect_false (ev_is_active (w)))
2135	return;	2473	return;
2136		2474
2137	assert (("ev_io_start called with negative fd", fd >= 0));	2475	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2476	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2138		2477
2139	EV_FREQUENT_CHECK;	2478	EV_FREQUENT_CHECK;
2140		2479
2141	ev_start (EV_A_ (W)w, 1);	2480	ev_start (EV_A_ (W)w, 1);
2142	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2481	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2143	wlist_add (&anfds[fd].head, (WL)w);	2482	wlist_add (&anfds[fd].head, (WL)w);
2144		2483
2145	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2484	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2146	w->events &= ~EV_IOFDSET;	2485	w->events &= ~EV__IOFDSET;
2147		2486
2148	EV_FREQUENT_CHECK;	2487	EV_FREQUENT_CHECK;
2149	}	2488	}
2150		2489
2151	void noinline	2490	void noinline
…		…
2153	{	2492	{
2154	clear_pending (EV_A_ (W)w);	2493	clear_pending (EV_A_ (W)w);
2155	if (expect_false (!ev_is_active (w)))	2494	if (expect_false (!ev_is_active (w)))
2156	return;	2495	return;
2157		2496
2158	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2497	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2159		2498
2160	EV_FREQUENT_CHECK;	2499	EV_FREQUENT_CHECK;
2161		2500
2162	wlist_del (&anfds[w->fd].head, (WL)w);	2501	wlist_del (&anfds[w->fd].head, (WL)w);
2163	ev_stop (EV_A_ (W)w);	2502	ev_stop (EV_A_ (W)w);
…		…
2173	if (expect_false (ev_is_active (w)))	2512	if (expect_false (ev_is_active (w)))
2174	return;	2513	return;
2175		2514
2176	ev_at (w) += mn_now;	2515	ev_at (w) += mn_now;
2177		2516
2178	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2517	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2179		2518
2180	EV_FREQUENT_CHECK;	2519	EV_FREQUENT_CHECK;
2181		2520
2182	++timercnt;	2521	++timercnt;
2183	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);	2522	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
…		…
2186	ANHE_at_cache (timers [ev_active (w)]);	2525	ANHE_at_cache (timers [ev_active (w)]);
2187	upheap (timers, ev_active (w));	2526	upheap (timers, ev_active (w));
2188		2527
2189	EV_FREQUENT_CHECK;	2528	EV_FREQUENT_CHECK;
2190		2529
2191	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2530	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2192	}	2531	}
2193		2532
2194	void noinline	2533	void noinline
2195	ev_timer_stop (EV_P_ ev_timer *w)	2534	ev_timer_stop (EV_P_ ev_timer *w)
2196	{	2535	{
…		…
2201	EV_FREQUENT_CHECK;	2540	EV_FREQUENT_CHECK;
2202		2541
2203	{	2542	{
2204	int active = ev_active (w);	2543	int active = ev_active (w);
2205		2544
2206	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2545	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2207		2546
2208	--timercnt;	2547	--timercnt;
2209		2548
2210	if (expect_true (active < timercnt + HEAP0))	2549	if (expect_true (active < timercnt + HEAP0))
2211	{	2550	{
…		…
2244	}	2583	}
2245		2584
2246	EV_FREQUENT_CHECK;	2585	EV_FREQUENT_CHECK;
2247	}	2586	}
2248		2587
		2588	ev_tstamp
		2589	ev_timer_remaining (EV_P_ ev_timer *w)
		2590	{
		2591	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
		2592	}
		2593
2249	#if EV_PERIODIC_ENABLE	2594	#if EV_PERIODIC_ENABLE
2250	void noinline	2595	void noinline
2251	ev_periodic_start (EV_P_ ev_periodic *w)	2596	ev_periodic_start (EV_P_ ev_periodic *w)
2252	{	2597	{
2253	if (expect_false (ev_is_active (w)))	2598	if (expect_false (ev_is_active (w)))
…		…
2255		2600
2256	if (w->reschedule_cb)	2601	if (w->reschedule_cb)
2257	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2602	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2258	else if (w->interval)	2603	else if (w->interval)
2259	{	2604	{
2260	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2605	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2261	/* this formula differs from the one in periodic_reify because we do not always round up */	2606	/* this formula differs from the one in periodic_reify because we do not always round up */
2262	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2607	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2263	}	2608	}
2264	else	2609	else
2265	ev_at (w) = w->offset;	2610	ev_at (w) = w->offset;
…		…
2273	ANHE_at_cache (periodics [ev_active (w)]);	2618	ANHE_at_cache (periodics [ev_active (w)]);
2274	upheap (periodics, ev_active (w));	2619	upheap (periodics, ev_active (w));
2275		2620
2276	EV_FREQUENT_CHECK;	2621	EV_FREQUENT_CHECK;
2277		2622
2278	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2623	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2279	}	2624	}
2280		2625
2281	void noinline	2626	void noinline
2282	ev_periodic_stop (EV_P_ ev_periodic *w)	2627	ev_periodic_stop (EV_P_ ev_periodic *w)
2283	{	2628	{
…		…
2288	EV_FREQUENT_CHECK;	2633	EV_FREQUENT_CHECK;
2289		2634
2290	{	2635	{
2291	int active = ev_active (w);	2636	int active = ev_active (w);
2292		2637
2293	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2638	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2294		2639
2295	--periodiccnt;	2640	--periodiccnt;
2296		2641
2297	if (expect_true (active < periodiccnt + HEAP0))	2642	if (expect_true (active < periodiccnt + HEAP0))
2298	{	2643	{
…		…
2321		2666
2322	void noinline	2667	void noinline
2323	ev_signal_start (EV_P_ ev_signal *w)	2668	ev_signal_start (EV_P_ ev_signal *w)
2324	{	2669	{
2325	#if EV_MULTIPLICITY	2670	#if EV_MULTIPLICITY
2326	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2671	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2327	#endif	2672	#endif
2328	if (expect_false (ev_is_active (w)))	2673	if (expect_false (ev_is_active (w)))
2329	return;	2674	return;
2330		2675
2331	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2676	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2332		2677
		2678	EV_FREQUENT_CHECK;
		2679
		2680	#if EV_USE_SIGNALFD
		2681	if (sigfd == -2)
		2682	{
		2683	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
		2684	if (sigfd < 0 && errno == EINVAL)
		2685	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
		2686
		2687	if (sigfd >= 0)
		2688	{
		2689	fd_intern (sigfd); /* doing it twice will not hurt */
		2690
		2691	sigemptyset (&sigfd_set);
		2692
		2693	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2694	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2695	ev_io_start (EV_A_ &sigfd_w);
		2696	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2697	}
		2698	}
		2699
		2700	if (sigfd >= 0)
		2701	{
		2702	/* TODO: check .head */
		2703	sigaddset (&sigfd_set, w->signum);
		2704	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2705
		2706	signalfd (sigfd, &sigfd_set, 0);
		2707	}
		2708	else
		2709	#endif
2333	evpipe_init (EV_A);	2710	evpipe_init (EV_A);
2334
2335	EV_FREQUENT_CHECK;
2336		2711
2337	{	2712	{
2338	#ifndef _WIN32	2713	#ifndef _WIN32
2339	sigset_t full, prev;	2714	sigset_t full, prev;
2340	sigfillset (&full);	2715	sigfillset (&full);
2341	sigprocmask (SIG_SETMASK, &full, &prev);	2716	sigprocmask (SIG_SETMASK, &full, &prev);
2342	#endif	2717	#endif
2343		2718
2344	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2719	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2345		2720
2346	#ifndef _WIN32	2721	#ifndef _WIN32
		2722	# if EV_USE_SIGNALFD
		2723	if (sigfd < 0)/*TODO*/
		2724	# endif
		2725	sigdelset (&prev, w->signum);
2347	sigprocmask (SIG_SETMASK, &prev, 0);	2726	sigprocmask (SIG_SETMASK, &prev, 0);
2348	#endif	2727	#endif
2349	}	2728	}
2350		2729
2351	ev_start (EV_A_ (W)w, 1);	2730	ev_start (EV_A_ (W)w, 1);
…		…
2354	if (!((WL)w)->next)	2733	if (!((WL)w)->next)
2355	{	2734	{
2356	#if _WIN32	2735	#if _WIN32
2357	signal (w->signum, ev_sighandler);	2736	signal (w->signum, ev_sighandler);
2358	#else	2737	#else
		2738	# if EV_USE_SIGNALFD
		2739	if (sigfd < 0) /*TODO*/
		2740	# endif
		2741	{
2359	struct sigaction sa;	2742	struct sigaction sa = { };
2360	sa.sa_handler = ev_sighandler;	2743	sa.sa_handler = ev_sighandler;
2361	sigfillset (&sa.sa_mask);	2744	sigfillset (&sa.sa_mask);
2362	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2745	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2363	sigaction (w->signum, &sa, 0);	2746	sigaction (w->signum, &sa, 0);
		2747	}
2364	#endif	2748	#endif
2365	}	2749	}
2366		2750
2367	EV_FREQUENT_CHECK;	2751	EV_FREQUENT_CHECK;
2368	}	2752	}
…		…
2378		2762
2379	wlist_del (&signals [w->signum - 1].head, (WL)w);	2763	wlist_del (&signals [w->signum - 1].head, (WL)w);
2380	ev_stop (EV_A_ (W)w);	2764	ev_stop (EV_A_ (W)w);
2381		2765
2382	if (!signals [w->signum - 1].head)	2766	if (!signals [w->signum - 1].head)
		2767	#if EV_USE_SIGNALFD
		2768	if (sigfd >= 0)
		2769	{
		2770	sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D
		2771	sigdelset (&sigfd_set, w->signum);
		2772	signalfd (sigfd, &sigfd_set, 0);
		2773	sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D
		2774	/*TODO: maybe unblock signal? */
		2775	}
		2776	else
		2777	#endif
2383	signal (w->signum, SIG_DFL);	2778	signal (w->signum, SIG_DFL);
2384		2779
2385	EV_FREQUENT_CHECK;	2780	EV_FREQUENT_CHECK;
2386	}	2781	}
2387		2782
2388	void	2783	void
2389	ev_child_start (EV_P_ ev_child *w)	2784	ev_child_start (EV_P_ ev_child *w)
2390	{	2785	{
2391	#if EV_MULTIPLICITY	2786	#if EV_MULTIPLICITY
2392	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2787	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2393	#endif	2788	#endif
2394	if (expect_false (ev_is_active (w)))	2789	if (expect_false (ev_is_active (w)))
2395	return;	2790	return;
2396		2791
2397	EV_FREQUENT_CHECK;	2792	EV_FREQUENT_CHECK;
…		…
2422	# ifdef _WIN32	2817	# ifdef _WIN32
2423	# undef lstat	2818	# undef lstat
2424	# define lstat(a,b) _stati64 (a,b)	2819	# define lstat(a,b) _stati64 (a,b)
2425	# endif	2820	# endif
2426		2821
2427	#define DEF_STAT_INTERVAL 5.0074891	2822	#define DEF_STAT_INTERVAL 5.0074891
		2823	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2428	#define MIN_STAT_INTERVAL 0.1074891	2824	#define MIN_STAT_INTERVAL 0.1074891
2429		2825
2430	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2826	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2431		2827
2432	#if EV_USE_INOTIFY	2828	#if EV_USE_INOTIFY
2433	# define EV_INOTIFY_BUFSIZE 8192	2829	# define EV_INOTIFY_BUFSIZE 8192
…		…
2437	{	2833	{
2438	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);	2834	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);
2439		2835
2440	if (w->wd < 0)	2836	if (w->wd < 0)
2441	{	2837	{
		2838	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2442	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2839	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2443		2840
2444	/* monitor some parent directory for speedup hints */	2841	/* monitor some parent directory for speedup hints */
2445	/* note that exceeding the hardcoded limit is not a correctness issue, */	2842	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2446	/* but an efficiency issue only */	2843	/* but an efficiency issue only */
2447	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2844	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2448	{	2845	{
2449	char path [4096];	2846	char path [4096];
2450	strcpy (path, w->path);	2847	strcpy (path, w->path);
…		…
2454	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2851	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2455	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2852	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2456		2853
2457	char *pend = strrchr (path, '/');	2854	char *pend = strrchr (path, '/');
2458		2855
2459	if (!pend)	2856	if (!pend || pend == path)
2460	break; /* whoops, no '/', complain to your admin */	2857	break;
2461		2858
2462	*pend = 0;	2859	*pend = 0;
2463	w->wd = inotify_add_watch (fs_fd, path, mask);	2860	w->wd = inotify_add_watch (fs_fd, path, mask);
2464	}	2861	}
2465	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2862	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2466	}	2863	}
2467	}	2864	}
2468	else
2469	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2470		2865
2471	if (w->wd >= 0)	2866	if (w->wd >= 0)
		2867	{
2472	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2868	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2869
		2870	/* now local changes will be tracked by inotify, but remote changes won't */
		2871	/* unless the filesystem it known to be local, we therefore still poll */
		2872	/* also do poll on <2.6.25, but with normal frequency */
		2873	struct statfs sfs;
		2874
		2875	if (fs_2625 && !statfs (w->path, &sfs))
		2876	if (sfs.f_type == 0x1373 /* devfs */
		2877	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2878	|| sfs.f_type == 0x3153464a /* jfs */
		2879	|| sfs.f_type == 0x52654973 /* reiser3 */
		2880	|| sfs.f_type == 0x01021994 /* tempfs */
		2881	|| sfs.f_type == 0x58465342 /* xfs */)
		2882	return;
		2883
		2884	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2885	ev_timer_again (EV_A_ &w->timer);
		2886	}
2473	}	2887	}
2474		2888
2475	static void noinline	2889	static void noinline
2476	infy_del (EV_P_ ev_stat *w)	2890	infy_del (EV_P_ ev_stat *w)
2477	{	2891	{
…		…
2491		2905
2492	static void noinline	2906	static void noinline
2493	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2907	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2494	{	2908	{
2495	if (slot < 0)	2909	if (slot < 0)
2496	/* overflow, need to check for all hahs slots */	2910	/* overflow, need to check for all hash slots */
2497	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2911	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2498	infy_wd (EV_A_ slot, wd, ev);	2912	infy_wd (EV_A_ slot, wd, ev);
2499	else	2913	else
2500	{	2914	{
2501	WL w_;	2915	WL w_;
…		…
2507		2921
2508	if (w->wd == wd || wd == -1)	2922	if (w->wd == wd || wd == -1)
2509	{	2923	{
2510	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2924	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2511	{	2925	{
		2926	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2512	w->wd = -1;	2927	w->wd = -1;
2513	infy_add (EV_A_ w); /* re-add, no matter what */	2928	infy_add (EV_A_ w); /* re-add, no matter what */
2514	}	2929	}
2515		2930
2516	stat_timer_cb (EV_A_ &w->timer, 0);	2931	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2529		2944
2530	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2945	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2531	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2946	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2532	}	2947	}
2533		2948
2534	void inline_size	2949	inline_size void
		2950	check_2625 (EV_P)
		2951	{
		2952	/* kernels < 2.6.25 are borked
		2953	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2954	*/
		2955	struct utsname buf;
		2956	int major, minor, micro;
		2957
		2958	if (uname (&buf))
		2959	return;
		2960
		2961	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2962	return;
		2963
		2964	if (major < 2
		2965	|| (major == 2 && minor < 6)
		2966	|| (major == 2 && minor == 6 && micro < 25))
		2967	return;
		2968
		2969	fs_2625 = 1;
		2970	}
		2971
		2972	inline_size void
2535	infy_init (EV_P)	2973	infy_init (EV_P)
2536	{	2974	{
2537	if (fs_fd != -2)	2975	if (fs_fd != -2)
2538	return;	2976	return;
		2977
		2978	fs_fd = -1;
		2979
		2980	check_2625 (EV_A);
2539		2981
2540	fs_fd = inotify_init ();	2982	fs_fd = inotify_init ();
2541		2983
2542	if (fs_fd >= 0)	2984	if (fs_fd >= 0)
2543	{	2985	{
…		…
2545	ev_set_priority (&fs_w, EV_MAXPRI);	2987	ev_set_priority (&fs_w, EV_MAXPRI);
2546	ev_io_start (EV_A_ &fs_w);	2988	ev_io_start (EV_A_ &fs_w);
2547	}	2989	}
2548	}	2990	}
2549		2991
2550	void inline_size	2992	inline_size void
2551	infy_fork (EV_P)	2993	infy_fork (EV_P)
2552	{	2994	{
2553	int slot;	2995	int slot;
2554		2996
2555	if (fs_fd < 0)	2997	if (fs_fd < 0)
…		…
2571	w->wd = -1;	3013	w->wd = -1;
2572		3014
2573	if (fs_fd >= 0)	3015	if (fs_fd >= 0)
2574	infy_add (EV_A_ w); /* re-add, no matter what */	3016	infy_add (EV_A_ w); /* re-add, no matter what */
2575	else	3017	else
2576	ev_timer_start (EV_A_ &w->timer);	3018	ev_timer_again (EV_A_ &w->timer);
2577	}	3019	}
2578
2579	}	3020	}
2580	}	3021	}
2581		3022
2582	#endif	3023	#endif
2583		3024
…		…
2619	|| w->prev.st_atime != w->attr.st_atime	3060	|| w->prev.st_atime != w->attr.st_atime
2620	|| w->prev.st_mtime != w->attr.st_mtime	3061	|| w->prev.st_mtime != w->attr.st_mtime
2621	|| w->prev.st_ctime != w->attr.st_ctime	3062	|| w->prev.st_ctime != w->attr.st_ctime
2622	) {	3063	) {
2623	#if EV_USE_INOTIFY	3064	#if EV_USE_INOTIFY
		3065	if (fs_fd >= 0)
		3066	{
2624	infy_del (EV_A_ w);	3067	infy_del (EV_A_ w);
2625	infy_add (EV_A_ w);	3068	infy_add (EV_A_ w);
2626	ev_stat_stat (EV_A_ w); /* avoid race... */	3069	ev_stat_stat (EV_A_ w); /* avoid race... */
		3070	}
2627	#endif	3071	#endif
2628		3072
2629	ev_feed_event (EV_A_ w, EV_STAT);	3073	ev_feed_event (EV_A_ w, EV_STAT);
2630	}	3074	}
2631	}	3075	}
…		…
2634	ev_stat_start (EV_P_ ev_stat *w)	3078	ev_stat_start (EV_P_ ev_stat *w)
2635	{	3079	{
2636	if (expect_false (ev_is_active (w)))	3080	if (expect_false (ev_is_active (w)))
2637	return;	3081	return;
2638		3082
2639	/* since we use memcmp, we need to clear any padding data etc. */
2640	memset (&w->prev, 0, sizeof (ev_statdata));
2641	memset (&w->attr, 0, sizeof (ev_statdata));
2642
2643	ev_stat_stat (EV_A_ w);	3083	ev_stat_stat (EV_A_ w);
2644		3084
		3085	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2645	if (w->interval < MIN_STAT_INTERVAL)	3086	w->interval = MIN_STAT_INTERVAL;
2646	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2647		3087
2648	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	3088	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2649	ev_set_priority (&w->timer, ev_priority (w));	3089	ev_set_priority (&w->timer, ev_priority (w));
2650		3090
2651	#if EV_USE_INOTIFY	3091	#if EV_USE_INOTIFY
2652	infy_init (EV_A);	3092	infy_init (EV_A);
2653		3093
2654	if (fs_fd >= 0)	3094	if (fs_fd >= 0)
2655	infy_add (EV_A_ w);	3095	infy_add (EV_A_ w);
2656	else	3096	else
2657	#endif	3097	#endif
2658	ev_timer_start (EV_A_ &w->timer);	3098	ev_timer_again (EV_A_ &w->timer);
2659		3099
2660	ev_start (EV_A_ (W)w, 1);	3100	ev_start (EV_A_ (W)w, 1);
2661		3101
2662	EV_FREQUENT_CHECK;	3102	EV_FREQUENT_CHECK;
2663	}	3103	}
…		…
2833	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3273	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2834	}	3274	}
2835	}	3275	}
2836	}	3276	}
2837		3277
		3278	static void
		3279	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3280	{
		3281	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3282
		3283	ev_embed_stop (EV_A_ w);
		3284
		3285	{
		3286	struct ev_loop *loop = w->other;
		3287
		3288	ev_loop_fork (EV_A);
		3289	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3290	}
		3291
		3292	ev_embed_start (EV_A_ w);
		3293	}
		3294
2838	#if 0	3295	#if 0
2839	static void	3296	static void
2840	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3297	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2841	{	3298	{
2842	ev_idle_stop (EV_A_ idle);	3299	ev_idle_stop (EV_A_ idle);
…		…
2849	if (expect_false (ev_is_active (w)))	3306	if (expect_false (ev_is_active (w)))
2850	return;	3307	return;
2851		3308
2852	{	3309	{
2853	struct ev_loop *loop = w->other;	3310	struct ev_loop *loop = w->other;
2854	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3311	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2855	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3312	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2856	}	3313	}
2857		3314
2858	EV_FREQUENT_CHECK;	3315	EV_FREQUENT_CHECK;
2859		3316
…		…
2862		3319
2863	ev_prepare_init (&w->prepare, embed_prepare_cb);	3320	ev_prepare_init (&w->prepare, embed_prepare_cb);
2864	ev_set_priority (&w->prepare, EV_MINPRI);	3321	ev_set_priority (&w->prepare, EV_MINPRI);
2865	ev_prepare_start (EV_A_ &w->prepare);	3322	ev_prepare_start (EV_A_ &w->prepare);
2866		3323
		3324	ev_fork_init (&w->fork, embed_fork_cb);
		3325	ev_fork_start (EV_A_ &w->fork);
		3326
2867	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3327	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2868		3328
2869	ev_start (EV_A_ (W)w, 1);	3329	ev_start (EV_A_ (W)w, 1);
2870		3330
2871	EV_FREQUENT_CHECK;	3331	EV_FREQUENT_CHECK;
…		…
2878	if (expect_false (!ev_is_active (w)))	3338	if (expect_false (!ev_is_active (w)))
2879	return;	3339	return;
2880		3340
2881	EV_FREQUENT_CHECK;	3341	EV_FREQUENT_CHECK;
2882		3342
2883	ev_io_stop (EV_A_ &w->io);	3343	ev_io_stop (EV_A_ &w->io);
2884	ev_prepare_stop (EV_A_ &w->prepare);	3344	ev_prepare_stop (EV_A_ &w->prepare);
2885		3345	ev_fork_stop (EV_A_ &w->fork);
2886	ev_stop (EV_A_ (W)w);
2887		3346
2888	EV_FREQUENT_CHECK;	3347	EV_FREQUENT_CHECK;
2889	}	3348	}
2890	#endif	3349	#endif
2891		3350
…		…
2998	}	3457	}
2999		3458
3000	static void	3459	static void
3001	once_cb_io (EV_P_ ev_io *w, int revents)	3460	once_cb_io (EV_P_ ev_io *w, int revents)
3002	{	3461	{
3003	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3462	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3463
		3464	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
3004	}	3465	}
3005		3466
3006	static void	3467	static void
3007	once_cb_to (EV_P_ ev_timer *w, int revents)	3468	once_cb_to (EV_P_ ev_timer *w, int revents)
3008	{	3469	{
3009	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3470	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3471
		3472	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3010	}	3473	}
3011		3474
3012	void	3475	void
3013	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3476	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
3014	{	3477	{
…		…
3036	ev_timer_set (&once->to, timeout, 0.);	3499	ev_timer_set (&once->to, timeout, 0.);
3037	ev_timer_start (EV_A_ &once->to);	3500	ev_timer_start (EV_A_ &once->to);
3038	}	3501	}
3039	}	3502	}
3040		3503
		3504	/*****************************************************************************/
		3505
		3506	#if EV_WALK_ENABLE
		3507	void
		3508	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3509	{
		3510	int i, j;
		3511	ev_watcher_list *wl, *wn;
		3512
		3513	if (types & (EV_IO | EV_EMBED))
		3514	for (i = 0; i < anfdmax; ++i)
		3515	for (wl = anfds [i].head; wl; )
		3516	{
		3517	wn = wl->next;
		3518
		3519	#if EV_EMBED_ENABLE
		3520	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3521	{
		3522	if (types & EV_EMBED)
		3523	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3524	}
		3525	else
		3526	#endif
		3527	#if EV_USE_INOTIFY
		3528	if (ev_cb ((ev_io *)wl) == infy_cb)
		3529	;
		3530	else
		3531	#endif
		3532	if ((ev_io *)wl != &pipe_w)
		3533	if (types & EV_IO)
		3534	cb (EV_A_ EV_IO, wl);
		3535
		3536	wl = wn;
		3537	}
		3538
		3539	if (types & (EV_TIMER | EV_STAT))
		3540	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3541	#if EV_STAT_ENABLE
		3542	/*TODO: timer is not always active*/
		3543	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3544	{
		3545	if (types & EV_STAT)
		3546	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3547	}
		3548	else
		3549	#endif
		3550	if (types & EV_TIMER)
		3551	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3552
		3553	#if EV_PERIODIC_ENABLE
		3554	if (types & EV_PERIODIC)
		3555	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3556	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3557	#endif
		3558
		3559	#if EV_IDLE_ENABLE
		3560	if (types & EV_IDLE)
		3561	for (j = NUMPRI; i--; )
		3562	for (i = idlecnt [j]; i--; )
		3563	cb (EV_A_ EV_IDLE, idles [j][i]);
		3564	#endif
		3565
		3566	#if EV_FORK_ENABLE
		3567	if (types & EV_FORK)
		3568	for (i = forkcnt; i--; )
		3569	if (ev_cb (forks [i]) != embed_fork_cb)
		3570	cb (EV_A_ EV_FORK, forks [i]);
		3571	#endif
		3572
		3573	#if EV_ASYNC_ENABLE
		3574	if (types & EV_ASYNC)
		3575	for (i = asynccnt; i--; )
		3576	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3577	#endif
		3578
		3579	if (types & EV_PREPARE)
		3580	for (i = preparecnt; i--; )
		3581	#if EV_EMBED_ENABLE
		3582	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3583	#endif
		3584	cb (EV_A_ EV_PREPARE, prepares [i]);
		3585
		3586	if (types & EV_CHECK)
		3587	for (i = checkcnt; i--; )
		3588	cb (EV_A_ EV_CHECK, checks [i]);
		3589
		3590	if (types & EV_SIGNAL)
		3591	for (i = 0; i < signalmax; ++i)
		3592	for (wl = signals [i].head; wl; )
		3593	{
		3594	wn = wl->next;
		3595	cb (EV_A_ EV_SIGNAL, wl);
		3596	wl = wn;
		3597	}
		3598
		3599	if (types & EV_CHILD)
		3600	for (i = EV_PID_HASHSIZE; i--; )
		3601	for (wl = childs [i]; wl; )
		3602	{
		3603	wn = wl->next;
		3604	cb (EV_A_ EV_CHILD, wl);
		3605	wl = wn;
		3606	}
		3607	/* EV_STAT 0x00001000 /* stat data changed */
		3608	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3609	}
		3610	#endif
		3611
3041	#if EV_MULTIPLICITY	3612	#if EV_MULTIPLICITY
3042	#include "ev_wrap.h"	3613	#include "ev_wrap.h"
3043	#endif	3614	#endif
3044		3615
3045	#ifdef __cplusplus	3616	#ifdef __cplusplus

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