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Comparing libev/ev.c (file contents):
Revision 1.249 by root, Wed May 21 23:30:52 2008 UTC vs.
Revision 1.302 by root, Thu Jul 16 15:08:08 2009 UTC

1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without modifica-	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* tion, are permitted provided that the following conditions are met:	8	* tion, are permitted provided that the following conditions are met:
9	*	9	*
…		…
47	# include EV_CONFIG_H	47	# include EV_CONFIG_H
48	# else	48	# else
49	# include "config.h"	49	# include "config.h"
50	# endif	50	# endif
51		51
		52	# if HAVE_CLOCK_SYSCALL
		53	# ifndef EV_USE_CLOCK_SYSCALL
		54	# define EV_USE_CLOCK_SYSCALL 1
		55	# ifndef EV_USE_REALTIME
		56	# define EV_USE_REALTIME 0
		57	# endif
		58	# ifndef EV_USE_MONOTONIC
		59	# define EV_USE_MONOTONIC 1
		60	# endif
		61	# endif
		62	# elif !defined(EV_USE_CLOCK_SYSCALL)
		63	# define EV_USE_CLOCK_SYSCALL 0
		64	# endif
		65
52	# if HAVE_CLOCK_GETTIME	66	# if HAVE_CLOCK_GETTIME
53	# ifndef EV_USE_MONOTONIC	67	# ifndef EV_USE_MONOTONIC
54	# define EV_USE_MONOTONIC 1	68	# define EV_USE_MONOTONIC 1
55	# endif	69	# endif
56	# ifndef EV_USE_REALTIME	70	# ifndef EV_USE_REALTIME
57	# define EV_USE_REALTIME 1	71	# define EV_USE_REALTIME 0
58	# endif	72	# endif
59	# else	73	# else
60	# ifndef EV_USE_MONOTONIC	74	# ifndef EV_USE_MONOTONIC
61	# define EV_USE_MONOTONIC 0	75	# define EV_USE_MONOTONIC 0
62	# endif	76	# endif
…		…
126	# define EV_USE_EVENTFD 1	140	# define EV_USE_EVENTFD 1
127	# else	141	# else
128	# define EV_USE_EVENTFD 0	142	# define EV_USE_EVENTFD 0
129	# endif	143	# endif
130	# endif	144	# endif
131		145
132	#endif	146	#endif
133		147
134	#include <math.h>	148	#include <math.h>
135	#include <stdlib.h>	149	#include <stdlib.h>
136	#include <fcntl.h>	150	#include <fcntl.h>
…		…
154	#ifndef _WIN32	168	#ifndef _WIN32
155	# include <sys/time.h>	169	# include <sys/time.h>
156	# include <sys/wait.h>	170	# include <sys/wait.h>
157	# include <unistd.h>	171	# include <unistd.h>
158	#else	172	#else
		173	# include <io.h>
159	# define WIN32_LEAN_AND_MEAN	174	# define WIN32_LEAN_AND_MEAN
160	# include <windows.h>	175	# include <windows.h>
161	# ifndef EV_SELECT_IS_WINSOCKET	176	# ifndef EV_SELECT_IS_WINSOCKET
162	# define EV_SELECT_IS_WINSOCKET 1	177	# define EV_SELECT_IS_WINSOCKET 1
163	# endif	178	# endif
164	#endif	179	#endif
165		180
166	/* this block tries to deduce configuration from header-defined symbols and defaults */	181	/* this block tries to deduce configuration from header-defined symbols and defaults */
167		182
		183	#ifndef EV_USE_CLOCK_SYSCALL
		184	# if __linux && __GLIBC__ >= 2
		185	# define EV_USE_CLOCK_SYSCALL 1
		186	# else
		187	# define EV_USE_CLOCK_SYSCALL 0
		188	# endif
		189	#endif
		190
168	#ifndef EV_USE_MONOTONIC	191	#ifndef EV_USE_MONOTONIC
		192	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
		193	# define EV_USE_MONOTONIC 1
		194	# else
169	# define EV_USE_MONOTONIC 0	195	# define EV_USE_MONOTONIC 0
		196	# endif
170	#endif	197	#endif
171		198
172	#ifndef EV_USE_REALTIME	199	#ifndef EV_USE_REALTIME
173	# define EV_USE_REALTIME 0	200	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174	#endif	201	#endif
175		202
176	#ifndef EV_USE_NANOSLEEP	203	#ifndef EV_USE_NANOSLEEP
		204	# if _POSIX_C_SOURCE >= 199309L
		205	# define EV_USE_NANOSLEEP 1
		206	# else
177	# define EV_USE_NANOSLEEP 0	207	# define EV_USE_NANOSLEEP 0
		208	# endif
178	#endif	209	#endif
179		210
180	#ifndef EV_USE_SELECT	211	#ifndef EV_USE_SELECT
181	# define EV_USE_SELECT 1	212	# define EV_USE_SELECT 1
182	#endif	213	#endif
…		…
236	# define EV_USE_EVENTFD 0	267	# define EV_USE_EVENTFD 0
237	# endif	268	# endif
238	#endif	269	#endif
239		270
240	#if 0 /* debugging */	271	#if 0 /* debugging */
241	# define EV_VERIFY 1	272	# define EV_VERIFY 3
242	# define EV_USE_4HEAP 1	273	# define EV_USE_4HEAP 1
243	# define EV_HEAP_CACHE_AT 1	274	# define EV_HEAP_CACHE_AT 1
244	#endif	275	#endif
245		276
		277	#ifndef EV_VERIFY
		278	# define EV_VERIFY !EV_MINIMAL
		279	#endif
		280
246	#ifndef EV_USE_4HEAP	281	#ifndef EV_USE_4HEAP
247	# define EV_USE_4HEAP !EV_MINIMAL	282	# define EV_USE_4HEAP !EV_MINIMAL
248	#endif	283	#endif
249		284
250	#ifndef EV_HEAP_CACHE_AT	285	#ifndef EV_HEAP_CACHE_AT
251	# define EV_HEAP_CACHE_AT !EV_MINIMAL	286	# define EV_HEAP_CACHE_AT !EV_MINIMAL
		287	#endif
		288
		289	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		290	/* which makes programs even slower. might work on other unices, too. */
		291	#if EV_USE_CLOCK_SYSCALL
		292	# include <syscall.h>
		293	# ifdef SYS_clock_gettime
		294	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		295	# undef EV_USE_MONOTONIC
		296	# define EV_USE_MONOTONIC 1
		297	# else
		298	# undef EV_USE_CLOCK_SYSCALL
		299	# define EV_USE_CLOCK_SYSCALL 0
		300	# endif
252	#endif	301	#endif
253		302
254	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	303	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
255		304
256	#ifndef CLOCK_MONOTONIC	305	#ifndef CLOCK_MONOTONIC
…		…
273	# include <sys/select.h>	322	# include <sys/select.h>
274	# endif	323	# endif
275	#endif	324	#endif
276		325
277	#if EV_USE_INOTIFY	326	#if EV_USE_INOTIFY
		327	# include <sys/utsname.h>
		328	# include <sys/statfs.h>
278	# include <sys/inotify.h>	329	# include <sys/inotify.h>
		330	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
		331	# ifndef IN_DONT_FOLLOW
		332	# undef EV_USE_INOTIFY
		333	# define EV_USE_INOTIFY 0
		334	# endif
279	#endif	335	#endif
280		336
281	#if EV_SELECT_IS_WINSOCKET	337	#if EV_SELECT_IS_WINSOCKET
282	# include <winsock.h>	338	# include <winsock.h>
283	#endif	339	#endif
…		…
294	# endif	350	# endif
295	#endif	351	#endif
296		352
297	/**/	353	/**/
298		354
299	/* EV_VERIFY: enable internal consistency checks
300	* undefined or zero: no verification done or available
301	* 1 or higher: ev_loop_verify function available
302	* 2 or higher: ev_loop_verify is called frequently
303	*/
304	#if EV_VERIFY >= 1	355	#if EV_VERIFY >= 3
305	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)	356	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
306	#else	357	#else
307	# define EV_FREQUENT_CHECK do { } while (0)	358	# define EV_FREQUENT_CHECK do { } while (0)
308	#endif	359	#endif
309		360
…		…
340	# define inline_speed static noinline	391	# define inline_speed static noinline
341	#else	392	#else
342	# define inline_speed static inline	393	# define inline_speed static inline
343	#endif	394	#endif
344		395
345	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	396	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		397
		398	#if EV_MINPRI == EV_MAXPRI
		399	# define ABSPRI(w) (((W)w), 0)
		400	#else
346	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	401	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		402	#endif
347		403
348	#define EMPTY /* required for microsofts broken pseudo-c compiler */	404	#define EMPTY /* required for microsofts broken pseudo-c compiler */
349	#define EMPTY2(a,b) /* used to suppress some warnings */	405	#define EMPTY2(a,b) /* used to suppress some warnings */
350		406
351	typedef ev_watcher *W;	407	typedef ev_watcher *W;
…		…
353	typedef ev_watcher_time *WT;	409	typedef ev_watcher_time *WT;
354		410
355	#define ev_active(w) ((W)(w))->active	411	#define ev_active(w) ((W)(w))->active
356	#define ev_at(w) ((WT)(w))->at	412	#define ev_at(w) ((WT)(w))->at
357		413
358	#if EV_USE_MONOTONIC	414	#if EV_USE_REALTIME
359	/* sig_atomic_t is used to avoid per-thread variables or locking but still */	415	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
360	/* giving it a reasonably high chance of working on typical architetcures */	416	/* giving it a reasonably high chance of working on typical architetcures */
		417	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		418	#endif
		419
		420	#if EV_USE_MONOTONIC
361	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	421	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
362	#endif	422	#endif
363		423
364	#ifdef _WIN32	424	#ifdef _WIN32
365	# include "ev_win32.c"	425	# include "ev_win32.c"
…		…
374	{	434	{
375	syserr_cb = cb;	435	syserr_cb = cb;
376	}	436	}
377		437
378	static void noinline	438	static void noinline
379	syserr (const char *msg)	439	ev_syserr (const char *msg)
380	{	440	{
381	if (!msg)	441	if (!msg)
382	msg = "(libev) system error";	442	msg = "(libev) system error";
383		443
384	if (syserr_cb)	444	if (syserr_cb)
…		…
430	#define ev_malloc(size) ev_realloc (0, (size))	490	#define ev_malloc(size) ev_realloc (0, (size))
431	#define ev_free(ptr) ev_realloc ((ptr), 0)	491	#define ev_free(ptr) ev_realloc ((ptr), 0)
432		492
433	/*****************************************************************************/	493	/*****************************************************************************/
434		494
		495	/* set in reify when reification needed */
		496	#define EV_ANFD_REIFY 1
		497
		498	/* file descriptor info structure */
435	typedef struct	499	typedef struct
436	{	500	{
437	WL head;	501	WL head;
438	unsigned char events;	502	unsigned char events; /* the events watched for */
		503	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
		504	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
439	unsigned char reify;	505	unsigned char unused;
		506	#if EV_USE_EPOLL
		507	unsigned int egen; /* generation counter to counter epoll bugs */
		508	#endif
440	#if EV_SELECT_IS_WINSOCKET	509	#if EV_SELECT_IS_WINSOCKET
441	SOCKET handle;	510	SOCKET handle;
442	#endif	511	#endif
443	} ANFD;	512	} ANFD;
444		513
		514	/* stores the pending event set for a given watcher */
445	typedef struct	515	typedef struct
446	{	516	{
447	W w;	517	W w;
448	int events;	518	int events; /* the pending event set for the given watcher */
449	} ANPENDING;	519	} ANPENDING;
450		520
451	#if EV_USE_INOTIFY	521	#if EV_USE_INOTIFY
452	/* hash table entry per inotify-id */	522	/* hash table entry per inotify-id */
453	typedef struct	523	typedef struct
…		…
456	} ANFS;	526	} ANFS;
457	#endif	527	#endif
458		528
459	/* Heap Entry */	529	/* Heap Entry */
460	#if EV_HEAP_CACHE_AT	530	#if EV_HEAP_CACHE_AT
		531	/* a heap element */
461	typedef struct {	532	typedef struct {
462	ev_tstamp at;	533	ev_tstamp at;
463	WT w;	534	WT w;
464	} ANHE;	535	} ANHE;
465		536
466	#define ANHE_w(he) (he).w /* access watcher, read-write */	537	#define ANHE_w(he) (he).w /* access watcher, read-write */
467	#define ANHE_at(he) (he).at /* access cached at, read-only */	538	#define ANHE_at(he) (he).at /* access cached at, read-only */
468	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */	539	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
469	#else	540	#else
		541	/* a heap element */
470	typedef WT ANHE;	542	typedef WT ANHE;
471		543
472	#define ANHE_w(he) (he)	544	#define ANHE_w(he) (he)
473	#define ANHE_at(he) (he)->at	545	#define ANHE_at(he) (he)->at
474	#define ANHE_at_cache(he)	546	#define ANHE_at_cache(he)
…		…
498		570
499	static int ev_default_loop_ptr;	571	static int ev_default_loop_ptr;
500		572
501	#endif	573	#endif
502		574
		575	#if EV_MINIMAL < 2
		576	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		577	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		578	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		579	#else
		580	# define EV_RELEASE_CB (void)0
		581	# define EV_ACQUIRE_CB (void)0
		582	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		583	#endif
		584
		585	#define EVUNLOOP_RECURSE 0x80
		586
503	/*****************************************************************************/	587	/*****************************************************************************/
504		588
		589	#ifndef EV_HAVE_EV_TIME
505	ev_tstamp	590	ev_tstamp
506	ev_time (void)	591	ev_time (void)
507	{	592	{
508	#if EV_USE_REALTIME	593	#if EV_USE_REALTIME
		594	if (expect_true (have_realtime))
		595	{
509	struct timespec ts;	596	struct timespec ts;
510	clock_gettime (CLOCK_REALTIME, &ts);	597	clock_gettime (CLOCK_REALTIME, &ts);
511	return ts.tv_sec + ts.tv_nsec * 1e-9;	598	return ts.tv_sec + ts.tv_nsec * 1e-9;
512	#else	599	}
		600	#endif
		601
513	struct timeval tv;	602	struct timeval tv;
514	gettimeofday (&tv, 0);	603	gettimeofday (&tv, 0);
515	return tv.tv_sec + tv.tv_usec * 1e-6;	604	return tv.tv_sec + tv.tv_usec * 1e-6;
516	#endif
517	}	605	}
		606	#endif
518		607
519	ev_tstamp inline_size	608	inline_size ev_tstamp
520	get_clock (void)	609	get_clock (void)
521	{	610	{
522	#if EV_USE_MONOTONIC	611	#if EV_USE_MONOTONIC
523	if (expect_true (have_monotonic))	612	if (expect_true (have_monotonic))
524	{	613	{
…		…
557	struct timeval tv;	646	struct timeval tv;
558		647
559	tv.tv_sec = (time_t)delay;	648	tv.tv_sec = (time_t)delay;
560	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	649	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
561		650
		651	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		652	/* something not guaranteed by newer posix versions, but guaranteed */
		653	/* by older ones */
562	select (0, 0, 0, 0, &tv);	654	select (0, 0, 0, 0, &tv);
563	#endif	655	#endif
564	}	656	}
565	}	657	}
566		658
567	/*****************************************************************************/	659	/*****************************************************************************/
568		660
569	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	661	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
570		662
571	int inline_size	663	/* find a suitable new size for the given array, */
		664	/* hopefully by rounding to a ncie-to-malloc size */
		665	inline_size int
572	array_nextsize (int elem, int cur, int cnt)	666	array_nextsize (int elem, int cur, int cnt)
573	{	667	{
574	int ncur = cur + 1;	668	int ncur = cur + 1;
575		669
576	do	670	do
…		…
593	array_realloc (int elem, void *base, int *cur, int cnt)	687	array_realloc (int elem, void *base, int *cur, int cnt)
594	{	688	{
595	*cur = array_nextsize (elem, *cur, cnt);	689	*cur = array_nextsize (elem, *cur, cnt);
596	return ev_realloc (base, elem * *cur);	690	return ev_realloc (base, elem * *cur);
597	}	691	}
		692
		693	#define array_init_zero(base,count) \
		694	memset ((void *)(base), 0, sizeof (*(base)) * (count))
598		695
599	#define array_needsize(type,base,cur,cnt,init) \	696	#define array_needsize(type,base,cur,cnt,init) \
600	if (expect_false ((cnt) > (cur))) \	697	if (expect_false ((cnt) > (cur))) \
601	{ \	698	{ \
602	int ocur_ = (cur); \	699	int ocur_ = (cur); \
…		…
614	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	711	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
615	}	712	}
616	#endif	713	#endif
617		714
618	#define array_free(stem, idx) \	715	#define array_free(stem, idx) \
619	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	716	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
620		717
621	/*****************************************************************************/	718	/*****************************************************************************/
		719
		720	/* dummy callback for pending events */
		721	static void noinline
		722	pendingcb (EV_P_ ev_prepare *w, int revents)
		723	{
		724	}
622		725
623	void noinline	726	void noinline
624	ev_feed_event (EV_P_ void *w, int revents)	727	ev_feed_event (EV_P_ void *w, int revents)
625	{	728	{
626	W w_ = (W)w;	729	W w_ = (W)w;
…		…
635	pendings [pri][w_->pending - 1].w = w_;	738	pendings [pri][w_->pending - 1].w = w_;
636	pendings [pri][w_->pending - 1].events = revents;	739	pendings [pri][w_->pending - 1].events = revents;
637	}	740	}
638	}	741	}
639		742
640	void inline_speed	743	inline_speed void
		744	feed_reverse (EV_P_ W w)
		745	{
		746	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		747	rfeeds [rfeedcnt++] = w;
		748	}
		749
		750	inline_size void
		751	feed_reverse_done (EV_P_ int revents)
		752	{
		753	do
		754	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		755	while (rfeedcnt);
		756	}
		757
		758	inline_speed void
641	queue_events (EV_P_ W *events, int eventcnt, int type)	759	queue_events (EV_P_ W *events, int eventcnt, int type)
642	{	760	{
643	int i;	761	int i;
644		762
645	for (i = 0; i < eventcnt; ++i)	763	for (i = 0; i < eventcnt; ++i)
646	ev_feed_event (EV_A_ events [i], type);	764	ev_feed_event (EV_A_ events [i], type);
647	}	765	}
648		766
649	/*****************************************************************************/	767	/*****************************************************************************/
650		768
651	void inline_size	769	inline_speed void
652	anfds_init (ANFD *base, int count)
653	{
654	while (count--)
655	{
656	base->head = 0;
657	base->events = EV_NONE;
658	base->reify = 0;
659
660	++base;
661	}
662	}
663
664	void inline_speed
665	fd_event (EV_P_ int fd, int revents)	770	fd_event_nc (EV_P_ int fd, int revents)
666	{	771	{
667	ANFD *anfd = anfds + fd;	772	ANFD *anfd = anfds + fd;
668	ev_io *w;	773	ev_io *w;
669		774
670	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	775	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
674	if (ev)	779	if (ev)
675	ev_feed_event (EV_A_ (W)w, ev);	780	ev_feed_event (EV_A_ (W)w, ev);
676	}	781	}
677	}	782	}
678		783
		784	/* do not submit kernel events for fds that have reify set */
		785	/* because that means they changed while we were polling for new events */
		786	inline_speed void
		787	fd_event (EV_P_ int fd, int revents)
		788	{
		789	ANFD *anfd = anfds + fd;
		790
		791	if (expect_true (!anfd->reify))
		792	fd_event_nc (EV_A_ fd, revents);
		793	}
		794
679	void	795	void
680	ev_feed_fd_event (EV_P_ int fd, int revents)	796	ev_feed_fd_event (EV_P_ int fd, int revents)
681	{	797	{
682	if (fd >= 0 && fd < anfdmax)	798	if (fd >= 0 && fd < anfdmax)
683	fd_event (EV_A_ fd, revents);	799	fd_event_nc (EV_A_ fd, revents);
684	}	800	}
685		801
686	void inline_size	802	/* make sure the external fd watch events are in-sync */
		803	/* with the kernel/libev internal state */
		804	inline_size void
687	fd_reify (EV_P)	805	fd_reify (EV_P)
688	{	806	{
689	int i;	807	int i;
690		808
691	for (i = 0; i < fdchangecnt; ++i)	809	for (i = 0; i < fdchangecnt; ++i)
…		…
700	events |= (unsigned char)w->events;	818	events |= (unsigned char)w->events;
701		819
702	#if EV_SELECT_IS_WINSOCKET	820	#if EV_SELECT_IS_WINSOCKET
703	if (events)	821	if (events)
704	{	822	{
705	unsigned long argp;	823	unsigned long arg;
706	#ifdef EV_FD_TO_WIN32_HANDLE	824	#ifdef EV_FD_TO_WIN32_HANDLE
707	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	825	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
708	#else	826	#else
709	anfd->handle = _get_osfhandle (fd);	827	anfd->handle = _get_osfhandle (fd);
710	#endif	828	#endif
711	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	829	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
712	}	830	}
713	#endif	831	#endif
714		832
715	{	833	{
716	unsigned char o_events = anfd->events;	834	unsigned char o_events = anfd->events;
717	unsigned char o_reify = anfd->reify;	835	unsigned char o_reify = anfd->reify;
718		836
719	anfd->reify = 0;	837	anfd->reify = 0;
720	anfd->events = events;	838	anfd->events = events;
721		839
722	if (o_events != events || o_reify & EV_IOFDSET)	840	if (o_events != events || o_reify & EV__IOFDSET)
723	backend_modify (EV_A_ fd, o_events, events);	841	backend_modify (EV_A_ fd, o_events, events);
724	}	842	}
725	}	843	}
726		844
727	fdchangecnt = 0;	845	fdchangecnt = 0;
728	}	846	}
729		847
730	void inline_size	848	/* something about the given fd changed */
		849	inline_size void
731	fd_change (EV_P_ int fd, int flags)	850	fd_change (EV_P_ int fd, int flags)
732	{	851	{
733	unsigned char reify = anfds [fd].reify;	852	unsigned char reify = anfds [fd].reify;
734	anfds [fd].reify |= flags;	853	anfds [fd].reify |= flags;
735		854
…		…
739	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	858	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
740	fdchanges [fdchangecnt - 1] = fd;	859	fdchanges [fdchangecnt - 1] = fd;
741	}	860	}
742	}	861	}
743		862
744	void inline_speed	863	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		864	inline_speed void
745	fd_kill (EV_P_ int fd)	865	fd_kill (EV_P_ int fd)
746	{	866	{
747	ev_io *w;	867	ev_io *w;
748		868
749	while ((w = (ev_io *)anfds [fd].head))	869	while ((w = (ev_io *)anfds [fd].head))
…		…
751	ev_io_stop (EV_A_ w);	871	ev_io_stop (EV_A_ w);
752	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	872	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
753	}	873	}
754	}	874	}
755		875
756	int inline_size	876	/* check whether the given fd is atcually valid, for error recovery */
		877	inline_size int
757	fd_valid (int fd)	878	fd_valid (int fd)
758	{	879	{
759	#ifdef _WIN32	880	#ifdef _WIN32
760	return _get_osfhandle (fd) != -1;	881	return _get_osfhandle (fd) != -1;
761	#else	882	#else
…		…
769	{	890	{
770	int fd;	891	int fd;
771		892
772	for (fd = 0; fd < anfdmax; ++fd)	893	for (fd = 0; fd < anfdmax; ++fd)
773	if (anfds [fd].events)	894	if (anfds [fd].events)
774	if (!fd_valid (fd) == -1 && errno == EBADF)	895	if (!fd_valid (fd) && errno == EBADF)
775	fd_kill (EV_A_ fd);	896	fd_kill (EV_A_ fd);
776	}	897	}
777		898
778	/* called on ENOMEM in select/poll to kill some fds and retry */	899	/* called on ENOMEM in select/poll to kill some fds and retry */
779	static void noinline	900	static void noinline
…		…
797		918
798	for (fd = 0; fd < anfdmax; ++fd)	919	for (fd = 0; fd < anfdmax; ++fd)
799	if (anfds [fd].events)	920	if (anfds [fd].events)
800	{	921	{
801	anfds [fd].events = 0;	922	anfds [fd].events = 0;
		923	anfds [fd].emask = 0;
802	fd_change (EV_A_ fd, EV_IOFDSET | 1);	924	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
803	}	925	}
804	}	926	}
805		927
806	/*****************************************************************************/	928	/*****************************************************************************/
807		929
…		…
823	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	945	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
824	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)	946	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
825	#define UPHEAP_DONE(p,k) ((p) == (k))	947	#define UPHEAP_DONE(p,k) ((p) == (k))
826		948
827	/* away from the root */	949	/* away from the root */
828	void inline_speed	950	inline_speed void
829	downheap (ANHE *heap, int N, int k)	951	downheap (ANHE *heap, int N, int k)
830	{	952	{
831	ANHE he = heap [k];	953	ANHE he = heap [k];
832	ANHE *E = heap + N + HEAP0;	954	ANHE *E = heap + N + HEAP0;
833		955
…		…
873	#define HEAP0 1	995	#define HEAP0 1
874	#define HPARENT(k) ((k) >> 1)	996	#define HPARENT(k) ((k) >> 1)
875	#define UPHEAP_DONE(p,k) (!(p))	997	#define UPHEAP_DONE(p,k) (!(p))
876		998
877	/* away from the root */	999	/* away from the root */
878	void inline_speed	1000	inline_speed void
879	downheap (ANHE *heap, int N, int k)	1001	downheap (ANHE *heap, int N, int k)
880	{	1002	{
881	ANHE he = heap [k];	1003	ANHE he = heap [k];
882		1004
883	for (;;)	1005	for (;;)
…		…
903	ev_active (ANHE_w (he)) = k;	1025	ev_active (ANHE_w (he)) = k;
904	}	1026	}
905	#endif	1027	#endif
906		1028
907	/* towards the root */	1029	/* towards the root */
908	void inline_speed	1030	inline_speed void
909	upheap (ANHE *heap, int k)	1031	upheap (ANHE *heap, int k)
910	{	1032	{
911	ANHE he = heap [k];	1033	ANHE he = heap [k];
912		1034
913	for (;;)	1035	for (;;)
…		…
924		1046
925	heap [k] = he;	1047	heap [k] = he;
926	ev_active (ANHE_w (he)) = k;	1048	ev_active (ANHE_w (he)) = k;
927	}	1049	}
928		1050
929	void inline_size	1051	/* move an element suitably so it is in a correct place */
		1052	inline_size void
930	adjustheap (ANHE *heap, int N, int k)	1053	adjustheap (ANHE *heap, int N, int k)
931	{	1054	{
932	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1055	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
933	upheap (heap, k);	1056	upheap (heap, k);
934	else	1057	else
935	downheap (heap, N, k);	1058	downheap (heap, N, k);
936	}	1059	}
937		1060
938	/* rebuild the heap: this function is used only once and executed rarely */	1061	/* rebuild the heap: this function is used only once and executed rarely */
939	void inline_size	1062	inline_size void
940	reheap (ANHE *heap, int N)	1063	reheap (ANHE *heap, int N)
941	{	1064	{
942	int i;	1065	int i;
		1066
943	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */	1067	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
944	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */	1068	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
945	for (i = 0; i < N; ++i)	1069	for (i = 0; i < N; ++i)
946	upheap (heap, i + HEAP0);	1070	upheap (heap, i + HEAP0);
947	}	1071	}
948		1072
949	#if EV_VERIFY
950	static void
951	checkheap (ANHE *heap, int N)
952	{
953	int i;
954
955	for (i = HEAP0; i < N + HEAP0; ++i)
956	{
957	assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
958	assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
959	assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
960	}
961	}
962	#endif
963
964	/*****************************************************************************/	1073	/*****************************************************************************/
965		1074
		1075	/* associate signal watchers to a signal signal */
966	typedef struct	1076	typedef struct
967	{	1077	{
968	WL head;	1078	WL head;
969	EV_ATOMIC_T gotsig;	1079	EV_ATOMIC_T gotsig;
970	} ANSIG;	1080	} ANSIG;
…		…
972	static ANSIG *signals;	1082	static ANSIG *signals;
973	static int signalmax;	1083	static int signalmax;
974		1084
975	static EV_ATOMIC_T gotsig;	1085	static EV_ATOMIC_T gotsig;
976		1086
977	void inline_size
978	signals_init (ANSIG *base, int count)
979	{
980	while (count--)
981	{
982	base->head = 0;
983	base->gotsig = 0;
984
985	++base;
986	}
987	}
988
989	/*****************************************************************************/	1087	/*****************************************************************************/
990		1088
991	void inline_speed	1089	/* used to prepare libev internal fd's */
		1090	/* this is not fork-safe */
		1091	inline_speed void
992	fd_intern (int fd)	1092	fd_intern (int fd)
993	{	1093	{
994	#ifdef _WIN32	1094	#ifdef _WIN32
995	int arg = 1;	1095	unsigned long arg = 1;
996	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1096	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
997	#else	1097	#else
998	fcntl (fd, F_SETFD, FD_CLOEXEC);	1098	fcntl (fd, F_SETFD, FD_CLOEXEC);
999	fcntl (fd, F_SETFL, O_NONBLOCK);	1099	fcntl (fd, F_SETFL, O_NONBLOCK);
1000	#endif	1100	#endif
1001	}	1101	}
1002		1102
1003	static void noinline	1103	static void noinline
1004	evpipe_init (EV_P)	1104	evpipe_init (EV_P)
1005	{	1105	{
1006	if (!ev_is_active (&pipeev))	1106	if (!ev_is_active (&pipe_w))
1007	{	1107	{
1008	#if EV_USE_EVENTFD	1108	#if EV_USE_EVENTFD
1009	if ((evfd = eventfd (0, 0)) >= 0)	1109	if ((evfd = eventfd (0, 0)) >= 0)
1010	{	1110	{
1011	evpipe [0] = -1;	1111	evpipe [0] = -1;
1012	fd_intern (evfd);	1112	fd_intern (evfd);
1013	ev_io_set (&pipeev, evfd, EV_READ);	1113	ev_io_set (&pipe_w, evfd, EV_READ);
1014	}	1114	}
1015	else	1115	else
1016	#endif	1116	#endif
1017	{	1117	{
1018	while (pipe (evpipe))	1118	while (pipe (evpipe))
1019	syserr ("(libev) error creating signal/async pipe");	1119	ev_syserr ("(libev) error creating signal/async pipe");
1020		1120
1021	fd_intern (evpipe [0]);	1121	fd_intern (evpipe [0]);
1022	fd_intern (evpipe [1]);	1122	fd_intern (evpipe [1]);
1023	ev_io_set (&pipeev, evpipe [0], EV_READ);	1123	ev_io_set (&pipe_w, evpipe [0], EV_READ);
1024	}	1124	}
1025		1125
1026	ev_io_start (EV_A_ &pipeev);	1126	ev_io_start (EV_A_ &pipe_w);
1027	ev_unref (EV_A); /* watcher should not keep loop alive */	1127	ev_unref (EV_A); /* watcher should not keep loop alive */
1028	}	1128	}
1029	}	1129	}
1030		1130
1031	void inline_size	1131	inline_size void
1032	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1132	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1033	{	1133	{
1034	if (!*flag)	1134	if (!*flag)
1035	{	1135	{
1036	int old_errno = errno; /* save errno because write might clobber it */	1136	int old_errno = errno; /* save errno because write might clobber it */
…		…
1049		1149
1050	errno = old_errno;	1150	errno = old_errno;
1051	}	1151	}
1052	}	1152	}
1053		1153
		1154	/* called whenever the libev signal pipe */
		1155	/* got some events (signal, async) */
1054	static void	1156	static void
1055	pipecb (EV_P_ ev_io *iow, int revents)	1157	pipecb (EV_P_ ev_io *iow, int revents)
1056	{	1158	{
1057	#if EV_USE_EVENTFD	1159	#if EV_USE_EVENTFD
1058	if (evfd >= 0)	1160	if (evfd >= 0)
…		…
1114	ev_feed_signal_event (EV_P_ int signum)	1216	ev_feed_signal_event (EV_P_ int signum)
1115	{	1217	{
1116	WL w;	1218	WL w;
1117		1219
1118	#if EV_MULTIPLICITY	1220	#if EV_MULTIPLICITY
1119	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1221	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1120	#endif	1222	#endif
1121		1223
1122	--signum;	1224	--signum;
1123		1225
1124	if (signum < 0 || signum >= signalmax)	1226	if (signum < 0 || signum >= signalmax)
…		…
1140		1242
1141	#ifndef WIFCONTINUED	1243	#ifndef WIFCONTINUED
1142	# define WIFCONTINUED(status) 0	1244	# define WIFCONTINUED(status) 0
1143	#endif	1245	#endif
1144		1246
1145	void inline_speed	1247	/* handle a single child status event */
		1248	inline_speed void
1146	child_reap (EV_P_ int chain, int pid, int status)	1249	child_reap (EV_P_ int chain, int pid, int status)
1147	{	1250	{
1148	ev_child *w;	1251	ev_child *w;
1149	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1252	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1150		1253
…		…
1163		1266
1164	#ifndef WCONTINUED	1267	#ifndef WCONTINUED
1165	# define WCONTINUED 0	1268	# define WCONTINUED 0
1166	#endif	1269	#endif
1167		1270
		1271	/* called on sigchld etc., calls waitpid */
1168	static void	1272	static void
1169	childcb (EV_P_ ev_signal *sw, int revents)	1273	childcb (EV_P_ ev_signal *sw, int revents)
1170	{	1274	{
1171	int pid, status;	1275	int pid, status;
1172		1276
…		…
1253	/* kqueue is borked on everything but netbsd apparently */	1357	/* kqueue is borked on everything but netbsd apparently */
1254	/* it usually doesn't work correctly on anything but sockets and pipes */	1358	/* it usually doesn't work correctly on anything but sockets and pipes */
1255	flags &= ~EVBACKEND_KQUEUE;	1359	flags &= ~EVBACKEND_KQUEUE;
1256	#endif	1360	#endif
1257	#ifdef __APPLE__	1361	#ifdef __APPLE__
1258	// flags &= ~EVBACKEND_KQUEUE; for documentation	1362	/* only select works correctly on that "unix-certified" platform */
1259	flags &= ~EVBACKEND_POLL;	1363	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1364	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1260	#endif	1365	#endif
1261		1366
1262	return flags;	1367	return flags;
1263	}	1368	}
1264		1369
…		…
1278	ev_backend (EV_P)	1383	ev_backend (EV_P)
1279	{	1384	{
1280	return backend;	1385	return backend;
1281	}	1386	}
1282		1387
		1388	#if EV_MINIMAL < 2
1283	unsigned int	1389	unsigned int
1284	ev_loop_count (EV_P)	1390	ev_loop_count (EV_P)
1285	{	1391	{
1286	return loop_count;	1392	return loop_count;
1287	}	1393	}
1288		1394
		1395	unsigned int
		1396	ev_loop_depth (EV_P)
		1397	{
		1398	return loop_depth;
		1399	}
		1400
1289	void	1401	void
1290	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1402	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1291	{	1403	{
1292	io_blocktime = interval;	1404	io_blocktime = interval;
1293	}	1405	}
…		…
1296	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1408	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1297	{	1409	{
1298	timeout_blocktime = interval;	1410	timeout_blocktime = interval;
1299	}	1411	}
1300		1412
		1413	void
		1414	ev_set_userdata (EV_P_ void *data)
		1415	{
		1416	userdata = data;
		1417	}
		1418
		1419	void *
		1420	ev_userdata (EV_P)
		1421	{
		1422	return userdata;
		1423	}
		1424
		1425	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1426	{
		1427	invoke_cb = invoke_pending_cb;
		1428	}
		1429
		1430	void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
		1431	{
		1432	release_cb = release;
		1433	acquire_cb = acquire;
		1434	}
		1435	#endif
		1436
		1437	/* initialise a loop structure, must be zero-initialised */
1301	static void noinline	1438	static void noinline
1302	loop_init (EV_P_ unsigned int flags)	1439	loop_init (EV_P_ unsigned int flags)
1303	{	1440	{
1304	if (!backend)	1441	if (!backend)
1305	{	1442	{
		1443	#if EV_USE_REALTIME
		1444	if (!have_realtime)
		1445	{
		1446	struct timespec ts;
		1447
		1448	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1449	have_realtime = 1;
		1450	}
		1451	#endif
		1452
1306	#if EV_USE_MONOTONIC	1453	#if EV_USE_MONOTONIC
		1454	if (!have_monotonic)
1307	{	1455	{
1308	struct timespec ts;	1456	struct timespec ts;
		1457
1309	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1458	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1310	have_monotonic = 1;	1459	have_monotonic = 1;
1311	}	1460	}
1312	#endif	1461	#endif
1313		1462
1314	ev_rt_now = ev_time ();	1463	ev_rt_now = ev_time ();
1315	mn_now = get_clock ();	1464	mn_now = get_clock ();
1316	now_floor = mn_now;	1465	now_floor = mn_now;
1317	rtmn_diff = ev_rt_now - mn_now;	1466	rtmn_diff = ev_rt_now - mn_now;
		1467	#if EV_MINIMAL < 2
		1468	invoke_cb = ev_invoke_pending;
		1469	#endif
1318		1470
1319	io_blocktime = 0.;	1471	io_blocktime = 0.;
1320	timeout_blocktime = 0.;	1472	timeout_blocktime = 0.;
1321	backend = 0;	1473	backend = 0;
1322	backend_fd = -1;	1474	backend_fd = -1;
…		…
1353	#endif	1505	#endif
1354	#if EV_USE_SELECT	1506	#if EV_USE_SELECT
1355	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1507	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1356	#endif	1508	#endif
1357		1509
		1510	ev_prepare_init (&pending_w, pendingcb);
		1511
1358	ev_init (&pipeev, pipecb);	1512	ev_init (&pipe_w, pipecb);
1359	ev_set_priority (&pipeev, EV_MAXPRI);	1513	ev_set_priority (&pipe_w, EV_MAXPRI);
1360	}	1514	}
1361	}	1515	}
1362		1516
		1517	/* free up a loop structure */
1363	static void noinline	1518	static void noinline
1364	loop_destroy (EV_P)	1519	loop_destroy (EV_P)
1365	{	1520	{
1366	int i;	1521	int i;
1367		1522
1368	if (ev_is_active (&pipeev))	1523	if (ev_is_active (&pipe_w))
1369	{	1524	{
1370	ev_ref (EV_A); /* signal watcher */	1525	ev_ref (EV_A); /* signal watcher */
1371	ev_io_stop (EV_A_ &pipeev);	1526	ev_io_stop (EV_A_ &pipe_w);
1372		1527
1373	#if EV_USE_EVENTFD	1528	#if EV_USE_EVENTFD
1374	if (evfd >= 0)	1529	if (evfd >= 0)
1375	close (evfd);	1530	close (evfd);
1376	#endif	1531	#endif
…		…
1415	}	1570	}
1416		1571
1417	ev_free (anfds); anfdmax = 0;	1572	ev_free (anfds); anfdmax = 0;
1418		1573
1419	/* have to use the microsoft-never-gets-it-right macro */	1574	/* have to use the microsoft-never-gets-it-right macro */
		1575	array_free (rfeed, EMPTY);
1420	array_free (fdchange, EMPTY);	1576	array_free (fdchange, EMPTY);
1421	array_free (timer, EMPTY);	1577	array_free (timer, EMPTY);
1422	#if EV_PERIODIC_ENABLE	1578	#if EV_PERIODIC_ENABLE
1423	array_free (periodic, EMPTY);	1579	array_free (periodic, EMPTY);
1424	#endif	1580	#endif
…		…
1433		1589
1434	backend = 0;	1590	backend = 0;
1435	}	1591	}
1436		1592
1437	#if EV_USE_INOTIFY	1593	#if EV_USE_INOTIFY
1438	void inline_size infy_fork (EV_P);	1594	inline_size void infy_fork (EV_P);
1439	#endif	1595	#endif
1440		1596
1441	void inline_size	1597	inline_size void
1442	loop_fork (EV_P)	1598	loop_fork (EV_P)
1443	{	1599	{
1444	#if EV_USE_PORT	1600	#if EV_USE_PORT
1445	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1601	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1446	#endif	1602	#endif
…		…
1452	#endif	1608	#endif
1453	#if EV_USE_INOTIFY	1609	#if EV_USE_INOTIFY
1454	infy_fork (EV_A);	1610	infy_fork (EV_A);
1455	#endif	1611	#endif
1456		1612
1457	if (ev_is_active (&pipeev))	1613	if (ev_is_active (&pipe_w))
1458	{	1614	{
1459	/* this "locks" the handlers against writing to the pipe */	1615	/* this "locks" the handlers against writing to the pipe */
1460	/* while we modify the fd vars */	1616	/* while we modify the fd vars */
1461	gotsig = 1;	1617	gotsig = 1;
1462	#if EV_ASYNC_ENABLE	1618	#if EV_ASYNC_ENABLE
1463	gotasync = 1;	1619	gotasync = 1;
1464	#endif	1620	#endif
1465		1621
1466	ev_ref (EV_A);	1622	ev_ref (EV_A);
1467	ev_io_stop (EV_A_ &pipeev);	1623	ev_io_stop (EV_A_ &pipe_w);
1468		1624
1469	#if EV_USE_EVENTFD	1625	#if EV_USE_EVENTFD
1470	if (evfd >= 0)	1626	if (evfd >= 0)
1471	close (evfd);	1627	close (evfd);
1472	#endif	1628	#endif
…		…
1477	close (evpipe [1]);	1633	close (evpipe [1]);
1478	}	1634	}
1479		1635
1480	evpipe_init (EV_A);	1636	evpipe_init (EV_A);
1481	/* now iterate over everything, in case we missed something */	1637	/* now iterate over everything, in case we missed something */
1482	pipecb (EV_A_ &pipeev, EV_READ);	1638	pipecb (EV_A_ &pipe_w, EV_READ);
1483	}	1639	}
1484		1640
1485	postfork = 0;	1641	postfork = 0;
1486	}	1642	}
1487		1643
1488	#if EV_MULTIPLICITY	1644	#if EV_MULTIPLICITY
		1645
1489	struct ev_loop *	1646	struct ev_loop *
1490	ev_loop_new (unsigned int flags)	1647	ev_loop_new (unsigned int flags)
1491	{	1648	{
1492	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1649	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1493		1650
…		…
1511	void	1668	void
1512	ev_loop_fork (EV_P)	1669	ev_loop_fork (EV_P)
1513	{	1670	{
1514	postfork = 1; /* must be in line with ev_default_fork */	1671	postfork = 1; /* must be in line with ev_default_fork */
1515	}	1672	}
		1673	#endif /* multiplicity */
1516		1674
1517	#if EV_VERIFY	1675	#if EV_VERIFY
1518	static void	1676	static void noinline
		1677	verify_watcher (EV_P_ W w)
		1678	{
		1679	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1680
		1681	if (w->pending)
		1682	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1683	}
		1684
		1685	static void noinline
		1686	verify_heap (EV_P_ ANHE *heap, int N)
		1687	{
		1688	int i;
		1689
		1690	for (i = HEAP0; i < N + HEAP0; ++i)
		1691	{
		1692	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1693	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1694	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1695
		1696	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1697	}
		1698	}
		1699
		1700	static void noinline
1519	array_check (W **ws, int cnt)	1701	array_verify (EV_P_ W *ws, int cnt)
1520	{	1702	{
1521	while (cnt--)	1703	while (cnt--)
		1704	{
1522	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));	1705	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1706	verify_watcher (EV_A_ ws [cnt]);
		1707	}
1523	}	1708	}
		1709	#endif
1524		1710
1525	static void	1711	#if EV_MINIMAL < 2
		1712	void
1526	ev_loop_verify (EV_P)	1713	ev_loop_verify (EV_P)
1527	{	1714	{
		1715	#if EV_VERIFY
1528	int i;	1716	int i;
		1717	WL w;
1529		1718
		1719	assert (activecnt >= -1);
		1720
		1721	assert (fdchangemax >= fdchangecnt);
		1722	for (i = 0; i < fdchangecnt; ++i)
		1723	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1724
		1725	assert (anfdmax >= 0);
		1726	for (i = 0; i < anfdmax; ++i)
		1727	for (w = anfds [i].head; w; w = w->next)
		1728	{
		1729	verify_watcher (EV_A_ (W)w);
		1730	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1731	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1732	}
		1733
		1734	assert (timermax >= timercnt);
1530	checkheap (timers, timercnt);	1735	verify_heap (EV_A_ timers, timercnt);
		1736
1531	#if EV_PERIODIC_ENABLE	1737	#if EV_PERIODIC_ENABLE
		1738	assert (periodicmax >= periodiccnt);
1532	checkheap (periodics, periodiccnt);	1739	verify_heap (EV_A_ periodics, periodiccnt);
1533	#endif	1740	#endif
1534		1741
		1742	for (i = NUMPRI; i--; )
		1743	{
		1744	assert (pendingmax [i] >= pendingcnt [i]);
1535	#if EV_IDLE_ENABLE	1745	#if EV_IDLE_ENABLE
1536	for (i = NUMPRI; i--; )	1746	assert (idleall >= 0);
		1747	assert (idlemax [i] >= idlecnt [i]);
1537	array_check ((W **)idles [i], idlecnt [i]);	1748	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1538	#endif	1749	#endif
		1750	}
		1751
1539	#if EV_FORK_ENABLE	1752	#if EV_FORK_ENABLE
		1753	assert (forkmax >= forkcnt);
1540	array_check ((W **)forks, forkcnt);	1754	array_verify (EV_A_ (W *)forks, forkcnt);
1541	#endif	1755	#endif
1542	array_check ((W **)prepares, preparecnt);	1756
1543	array_check ((W **)checks, checkcnt);
1544	#if EV_ASYNC_ENABLE	1757	#if EV_ASYNC_ENABLE
		1758	assert (asyncmax >= asynccnt);
1545	array_check ((W **)asyncs, asynccnt);	1759	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1760	#endif
		1761
		1762	assert (preparemax >= preparecnt);
		1763	array_verify (EV_A_ (W *)prepares, preparecnt);
		1764
		1765	assert (checkmax >= checkcnt);
		1766	array_verify (EV_A_ (W *)checks, checkcnt);
		1767
		1768	# if 0
		1769	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1770	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1546	#endif	1771	# endif
1547	}
1548	#endif	1772	#endif
1549		1773	}
1550	#endif	1774	#endif
1551		1775
1552	#if EV_MULTIPLICITY	1776	#if EV_MULTIPLICITY
1553	struct ev_loop *	1777	struct ev_loop *
1554	ev_default_loop_init (unsigned int flags)	1778	ev_default_loop_init (unsigned int flags)
…		…
1588	{	1812	{
1589	#if EV_MULTIPLICITY	1813	#if EV_MULTIPLICITY
1590	struct ev_loop *loop = ev_default_loop_ptr;	1814	struct ev_loop *loop = ev_default_loop_ptr;
1591	#endif	1815	#endif
1592		1816
		1817	ev_default_loop_ptr = 0;
		1818
1593	#ifndef _WIN32	1819	#ifndef _WIN32
1594	ev_ref (EV_A); /* child watcher */	1820	ev_ref (EV_A); /* child watcher */
1595	ev_signal_stop (EV_A_ &childev);	1821	ev_signal_stop (EV_A_ &childev);
1596	#endif	1822	#endif
1597		1823
…		…
1603	{	1829	{
1604	#if EV_MULTIPLICITY	1830	#if EV_MULTIPLICITY
1605	struct ev_loop *loop = ev_default_loop_ptr;	1831	struct ev_loop *loop = ev_default_loop_ptr;
1606	#endif	1832	#endif
1607		1833
1608	if (backend)
1609	postfork = 1; /* must be in line with ev_loop_fork */	1834	postfork = 1; /* must be in line with ev_loop_fork */
1610	}	1835	}
1611		1836
1612	/*****************************************************************************/	1837	/*****************************************************************************/
1613		1838
1614	void	1839	void
1615	ev_invoke (EV_P_ void *w, int revents)	1840	ev_invoke (EV_P_ void *w, int revents)
1616	{	1841	{
1617	EV_CB_INVOKE ((W)w, revents);	1842	EV_CB_INVOKE ((W)w, revents);
1618	}	1843	}
1619		1844
1620	void inline_speed	1845	unsigned int
1621	call_pending (EV_P)	1846	ev_pending_count (EV_P)
1622	{	1847	{
1623	int pri;	1848	int pri;
		1849	unsigned int count = 0;
1624		1850
1625	EV_FREQUENT_CHECK;	1851	for (pri = NUMPRI; pri--; )
		1852	count += pendingcnt [pri];
		1853
		1854	return count;
		1855	}
		1856
		1857	void noinline
		1858	ev_invoke_pending (EV_P)
		1859	{
		1860	int pri;
1626		1861
1627	for (pri = NUMPRI; pri--; )	1862	for (pri = NUMPRI; pri--; )
1628	while (pendingcnt [pri])	1863	while (pendingcnt [pri])
1629	{	1864	{
1630	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1865	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1631		1866
1632	if (expect_true (p->w))
1633	{
1634	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1867	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1868	/* ^ this is no longer true, as pending_w could be here */
1635		1869
1636	p->w->pending = 0;	1870	p->w->pending = 0;
1637	EV_CB_INVOKE (p->w, p->events);	1871	EV_CB_INVOKE (p->w, p->events);
1638	}	1872	EV_FREQUENT_CHECK;
1639	}	1873	}
1640
1641	EV_FREQUENT_CHECK;
1642	}	1874	}
1643		1875
1644	#if EV_IDLE_ENABLE	1876	#if EV_IDLE_ENABLE
1645	void inline_size	1877	/* make idle watchers pending. this handles the "call-idle */
		1878	/* only when higher priorities are idle" logic */
		1879	inline_size void
1646	idle_reify (EV_P)	1880	idle_reify (EV_P)
1647	{	1881	{
1648	if (expect_false (idleall))	1882	if (expect_false (idleall))
1649	{	1883	{
1650	int pri;	1884	int pri;
…		…
1662	}	1896	}
1663	}	1897	}
1664	}	1898	}
1665	#endif	1899	#endif
1666		1900
1667	void inline_size	1901	/* make timers pending */
		1902	inline_size void
1668	timers_reify (EV_P)	1903	timers_reify (EV_P)
1669	{	1904	{
1670	EV_FREQUENT_CHECK;	1905	EV_FREQUENT_CHECK;
1671		1906
1672	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	1907	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1673	{	1908	{
1674	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	1909	do
1675
1676	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1677
1678	/* first reschedule or stop timer */
1679	if (w->repeat)
1680	{	1910	{
		1911	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1912
		1913	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		1914
		1915	/* first reschedule or stop timer */
		1916	if (w->repeat)
		1917	{
1681	ev_at (w) += w->repeat;	1918	ev_at (w) += w->repeat;
1682	if (ev_at (w) < mn_now)	1919	if (ev_at (w) < mn_now)
1683	ev_at (w) = mn_now;	1920	ev_at (w) = mn_now;
1684		1921
1685	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1922	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1686		1923
1687	ANHE_at_cache (timers [HEAP0]);	1924	ANHE_at_cache (timers [HEAP0]);
1688	downheap (timers, timercnt, HEAP0);	1925	downheap (timers, timercnt, HEAP0);
		1926	}
		1927	else
		1928	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1929
		1930	EV_FREQUENT_CHECK;
		1931	feed_reverse (EV_A_ (W)w);
1689	}	1932	}
1690	else	1933	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1691	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1692		1934
1693	EV_FREQUENT_CHECK;
1694	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1935	feed_reverse_done (EV_A_ EV_TIMEOUT);
1695	}	1936	}
1696	}	1937	}
1697		1938
1698	#if EV_PERIODIC_ENABLE	1939	#if EV_PERIODIC_ENABLE
1699	void inline_size	1940	/* make periodics pending */
		1941	inline_size void
1700	periodics_reify (EV_P)	1942	periodics_reify (EV_P)
1701	{	1943	{
1702	EV_FREQUENT_CHECK;	1944	EV_FREQUENT_CHECK;
		1945
1703	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	1946	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1704	{	1947	{
1705	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	1948	int feed_count = 0;
1706		1949
1707	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	1950	do
1708
1709	/* first reschedule or stop timer */
1710	if (w->reschedule_cb)
1711	{	1951	{
		1952	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1953
		1954	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		1955
		1956	/* first reschedule or stop timer */
		1957	if (w->reschedule_cb)
		1958	{
1712	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1959	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1713		1960
1714	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));	1961	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1715		1962
1716	ANHE_at_cache (periodics [HEAP0]);	1963	ANHE_at_cache (periodics [HEAP0]);
1717	downheap (periodics, periodiccnt, HEAP0);	1964	downheap (periodics, periodiccnt, HEAP0);
		1965	}
		1966	else if (w->interval)
		1967	{
		1968	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1969	/* if next trigger time is not sufficiently in the future, put it there */
		1970	/* this might happen because of floating point inexactness */
		1971	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1972	{
		1973	ev_at (w) += w->interval;
		1974
		1975	/* if interval is unreasonably low we might still have a time in the past */
		1976	/* so correct this. this will make the periodic very inexact, but the user */
		1977	/* has effectively asked to get triggered more often than possible */
		1978	if (ev_at (w) < ev_rt_now)
		1979	ev_at (w) = ev_rt_now;
		1980	}
		1981
		1982	ANHE_at_cache (periodics [HEAP0]);
		1983	downheap (periodics, periodiccnt, HEAP0);
		1984	}
		1985	else
		1986	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1987
1718	EV_FREQUENT_CHECK;	1988	EV_FREQUENT_CHECK;
		1989	feed_reverse (EV_A_ (W)w);
1719	}	1990	}
1720	else if (w->interval)	1991	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1721	{
1722	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1723	/* if next trigger time is not sufficiently in the future, put it there */
1724	/* this might happen because of floating point inexactness */
1725	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1726	{
1727	ev_at (w) += w->interval;
1728		1992
1729	/* if interval is unreasonably low we might still have a time in the past */
1730	/* so correct this. this will make the periodic very inexact, but the user */
1731	/* has effectively asked to get triggered more often than possible */
1732	if (ev_at (w) < ev_rt_now)
1733	ev_at (w) = ev_rt_now;
1734	}
1735
1736	ANHE_at_cache (periodics [HEAP0]);
1737	downheap (periodics, periodiccnt, HEAP0);
1738	}
1739	else
1740	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1741
1742	EV_FREQUENT_CHECK;
1743	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1993	feed_reverse_done (EV_A_ EV_PERIODIC);
1744	}	1994	}
1745	}	1995	}
1746		1996
		1997	/* simply recalculate all periodics */
		1998	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1747	static void noinline	1999	static void noinline
1748	periodics_reschedule (EV_P)	2000	periodics_reschedule (EV_P)
1749	{	2001	{
1750	int i;	2002	int i;
1751		2003
…		…
1764		2016
1765	reheap (periodics, periodiccnt);	2017	reheap (periodics, periodiccnt);
1766	}	2018	}
1767	#endif	2019	#endif
1768		2020
1769	void inline_speed	2021	/* adjust all timers by a given offset */
		2022	static void noinline
		2023	timers_reschedule (EV_P_ ev_tstamp adjust)
		2024	{
		2025	int i;
		2026
		2027	for (i = 0; i < timercnt; ++i)
		2028	{
		2029	ANHE *he = timers + i + HEAP0;
		2030	ANHE_w (*he)->at += adjust;
		2031	ANHE_at_cache (*he);
		2032	}
		2033	}
		2034
		2035	/* fetch new monotonic and realtime times from the kernel */
		2036	/* also detetc if there was a timejump, and act accordingly */
		2037	inline_speed void
1770	time_update (EV_P_ ev_tstamp max_block)	2038	time_update (EV_P_ ev_tstamp max_block)
1771	{	2039	{
1772	int i;
1773
1774	#if EV_USE_MONOTONIC	2040	#if EV_USE_MONOTONIC
1775	if (expect_true (have_monotonic))	2041	if (expect_true (have_monotonic))
1776	{	2042	{
		2043	int i;
1777	ev_tstamp odiff = rtmn_diff;	2044	ev_tstamp odiff = rtmn_diff;
1778		2045
1779	mn_now = get_clock ();	2046	mn_now = get_clock ();
1780		2047
1781	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2048	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1807	ev_rt_now = ev_time ();	2074	ev_rt_now = ev_time ();
1808	mn_now = get_clock ();	2075	mn_now = get_clock ();
1809	now_floor = mn_now;	2076	now_floor = mn_now;
1810	}	2077	}
1811		2078
		2079	/* no timer adjustment, as the monotonic clock doesn't jump */
		2080	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1812	# if EV_PERIODIC_ENABLE	2081	# if EV_PERIODIC_ENABLE
1813	periodics_reschedule (EV_A);	2082	periodics_reschedule (EV_A);
1814	# endif	2083	# endif
1815	/* no timer adjustment, as the monotonic clock doesn't jump */
1816	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1817	}	2084	}
1818	else	2085	else
1819	#endif	2086	#endif
1820	{	2087	{
1821	ev_rt_now = ev_time ();	2088	ev_rt_now = ev_time ();
1822		2089
1823	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2090	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1824	{	2091	{
		2092	/* adjust timers. this is easy, as the offset is the same for all of them */
		2093	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1825	#if EV_PERIODIC_ENABLE	2094	#if EV_PERIODIC_ENABLE
1826	periodics_reschedule (EV_A);	2095	periodics_reschedule (EV_A);
1827	#endif	2096	#endif
1828	/* adjust timers. this is easy, as the offset is the same for all of them */
1829	for (i = 0; i < timercnt; ++i)
1830	{
1831	ANHE *he = timers + i + HEAP0;
1832	ANHE_w (*he)->at += ev_rt_now - mn_now;
1833	ANHE_at_cache (*he);
1834	}
1835	}	2097	}
1836		2098
1837	mn_now = ev_rt_now;	2099	mn_now = ev_rt_now;
1838	}	2100	}
1839	}	2101	}
1840		2102
1841	void	2103	void
1842	ev_ref (EV_P)
1843	{
1844	++activecnt;
1845	}
1846
1847	void
1848	ev_unref (EV_P)
1849	{
1850	--activecnt;
1851	}
1852
1853	static int loop_done;
1854
1855	void
1856	ev_loop (EV_P_ int flags)	2104	ev_loop (EV_P_ int flags)
1857	{	2105	{
		2106	#if EV_MINIMAL < 2
		2107	++loop_depth;
		2108	#endif
		2109
		2110	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2111
1858	loop_done = EVUNLOOP_CANCEL;	2112	loop_done = EVUNLOOP_CANCEL;
1859		2113
1860	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2114	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1861		2115
1862	do	2116	do
1863	{	2117	{
		2118	#if EV_VERIFY >= 2
		2119	ev_loop_verify (EV_A);
		2120	#endif
		2121
1864	#ifndef _WIN32	2122	#ifndef _WIN32
1865	if (expect_false (curpid)) /* penalise the forking check even more */	2123	if (expect_false (curpid)) /* penalise the forking check even more */
1866	if (expect_false (getpid () != curpid))	2124	if (expect_false (getpid () != curpid))
1867	{	2125	{
1868	curpid = getpid ();	2126	curpid = getpid ();
…		…
1874	/* we might have forked, so queue fork handlers */	2132	/* we might have forked, so queue fork handlers */
1875	if (expect_false (postfork))	2133	if (expect_false (postfork))
1876	if (forkcnt)	2134	if (forkcnt)
1877	{	2135	{
1878	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2136	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1879	call_pending (EV_A);	2137	EV_INVOKE_PENDING;
1880	}	2138	}
1881	#endif	2139	#endif
1882		2140
1883	/* queue prepare watchers (and execute them) */	2141	/* queue prepare watchers (and execute them) */
1884	if (expect_false (preparecnt))	2142	if (expect_false (preparecnt))
1885	{	2143	{
1886	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2144	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1887	call_pending (EV_A);	2145	EV_INVOKE_PENDING;
1888	}	2146	}
1889		2147
1890	if (expect_false (!activecnt))	2148	if (expect_false (loop_done))
1891	break;	2149	break;
1892		2150
1893	/* we might have forked, so reify kernel state if necessary */	2151	/* we might have forked, so reify kernel state if necessary */
1894	if (expect_false (postfork))	2152	if (expect_false (postfork))
1895	loop_fork (EV_A);	2153	loop_fork (EV_A);
…		…
1902	ev_tstamp waittime = 0.;	2160	ev_tstamp waittime = 0.;
1903	ev_tstamp sleeptime = 0.;	2161	ev_tstamp sleeptime = 0.;
1904		2162
1905	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2163	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1906	{	2164	{
		2165	/* remember old timestamp for io_blocktime calculation */
		2166	ev_tstamp prev_mn_now = mn_now;
		2167
1907	/* update time to cancel out callback processing overhead */	2168	/* update time to cancel out callback processing overhead */
1908	time_update (EV_A_ 1e100);	2169	time_update (EV_A_ 1e100);
1909		2170
1910	waittime = MAX_BLOCKTIME;	2171	waittime = MAX_BLOCKTIME;
1911		2172
…		…
1921	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2182	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1922	if (waittime > to) waittime = to;	2183	if (waittime > to) waittime = to;
1923	}	2184	}
1924	#endif	2185	#endif
1925		2186
		2187	/* don't let timeouts decrease the waittime below timeout_blocktime */
1926	if (expect_false (waittime < timeout_blocktime))	2188	if (expect_false (waittime < timeout_blocktime))
1927	waittime = timeout_blocktime;	2189	waittime = timeout_blocktime;
1928		2190
1929	sleeptime = waittime - backend_fudge;	2191	/* extra check because io_blocktime is commonly 0 */
1930
1931	if (expect_true (sleeptime > io_blocktime))	2192	if (expect_false (io_blocktime))
1932	sleeptime = io_blocktime;
1933
1934	if (sleeptime)
1935	{	2193	{
		2194	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2195
		2196	if (sleeptime > waittime - backend_fudge)
		2197	sleeptime = waittime - backend_fudge;
		2198
		2199	if (expect_true (sleeptime > 0.))
		2200	{
1936	ev_sleep (sleeptime);	2201	ev_sleep (sleeptime);
1937	waittime -= sleeptime;	2202	waittime -= sleeptime;
		2203	}
1938	}	2204	}
1939	}	2205	}
1940		2206
		2207	#if EV_MINIMAL < 2
1941	++loop_count;	2208	++loop_count;
		2209	#endif
		2210	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1942	backend_poll (EV_A_ waittime);	2211	backend_poll (EV_A_ waittime);
		2212	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1943		2213
1944	/* update ev_rt_now, do magic */	2214	/* update ev_rt_now, do magic */
1945	time_update (EV_A_ waittime + sleeptime);	2215	time_update (EV_A_ waittime + sleeptime);
1946	}	2216	}
1947		2217
…		…
1958		2228
1959	/* queue check watchers, to be executed first */	2229	/* queue check watchers, to be executed first */
1960	if (expect_false (checkcnt))	2230	if (expect_false (checkcnt))
1961	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2231	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1962		2232
1963	call_pending (EV_A);	2233	EV_INVOKE_PENDING;
1964	}	2234	}
1965	while (expect_true (	2235	while (expect_true (
1966	activecnt	2236	activecnt
1967	&& !loop_done	2237	&& !loop_done
1968	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2238	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1969	));	2239	));
1970		2240
1971	if (loop_done == EVUNLOOP_ONE)	2241	if (loop_done == EVUNLOOP_ONE)
1972	loop_done = EVUNLOOP_CANCEL;	2242	loop_done = EVUNLOOP_CANCEL;
		2243
		2244	#if EV_MINIMAL < 2
		2245	--loop_depth;
		2246	#endif
1973	}	2247	}
1974		2248
1975	void	2249	void
1976	ev_unloop (EV_P_ int how)	2250	ev_unloop (EV_P_ int how)
1977	{	2251	{
1978	loop_done = how;	2252	loop_done = how;
1979	}	2253	}
1980		2254
		2255	void
		2256	ev_ref (EV_P)
		2257	{
		2258	++activecnt;
		2259	}
		2260
		2261	void
		2262	ev_unref (EV_P)
		2263	{
		2264	--activecnt;
		2265	}
		2266
		2267	void
		2268	ev_now_update (EV_P)
		2269	{
		2270	time_update (EV_A_ 1e100);
		2271	}
		2272
		2273	void
		2274	ev_suspend (EV_P)
		2275	{
		2276	ev_now_update (EV_A);
		2277	}
		2278
		2279	void
		2280	ev_resume (EV_P)
		2281	{
		2282	ev_tstamp mn_prev = mn_now;
		2283
		2284	ev_now_update (EV_A);
		2285	timers_reschedule (EV_A_ mn_now - mn_prev);
		2286	#if EV_PERIODIC_ENABLE
		2287	/* TODO: really do this? */
		2288	periodics_reschedule (EV_A);
		2289	#endif
		2290	}
		2291
1981	/*****************************************************************************/	2292	/*****************************************************************************/
		2293	/* singly-linked list management, used when the expected list length is short */
1982		2294
1983	void inline_size	2295	inline_size void
1984	wlist_add (WL *head, WL elem)	2296	wlist_add (WL *head, WL elem)
1985	{	2297	{
1986	elem->next = *head;	2298	elem->next = *head;
1987	*head = elem;	2299	*head = elem;
1988	}	2300	}
1989		2301
1990	void inline_size	2302	inline_size void
1991	wlist_del (WL *head, WL elem)	2303	wlist_del (WL *head, WL elem)
1992	{	2304	{
1993	while (*head)	2305	while (*head)
1994	{	2306	{
1995	if (*head == elem)	2307	if (*head == elem)
…		…
2000		2312
2001	head = &(*head)->next;	2313	head = &(*head)->next;
2002	}	2314	}
2003	}	2315	}
2004		2316
2005	void inline_speed	2317	/* internal, faster, version of ev_clear_pending */
		2318	inline_speed void
2006	clear_pending (EV_P_ W w)	2319	clear_pending (EV_P_ W w)
2007	{	2320	{
2008	if (w->pending)	2321	if (w->pending)
2009	{	2322	{
2010	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2323	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2011	w->pending = 0;	2324	w->pending = 0;
2012	}	2325	}
2013	}	2326	}
2014		2327
2015	int	2328	int
…		…
2019	int pending = w_->pending;	2332	int pending = w_->pending;
2020		2333
2021	if (expect_true (pending))	2334	if (expect_true (pending))
2022	{	2335	{
2023	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2336	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2337	p->w = (W)&pending_w;
2024	w_->pending = 0;	2338	w_->pending = 0;
2025	p->w = 0;
2026	return p->events;	2339	return p->events;
2027	}	2340	}
2028	else	2341	else
2029	return 0;	2342	return 0;
2030	}	2343	}
2031		2344
2032	void inline_size	2345	inline_size void
2033	pri_adjust (EV_P_ W w)	2346	pri_adjust (EV_P_ W w)
2034	{	2347	{
2035	int pri = w->priority;	2348	int pri = ev_priority (w);
2036	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2349	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2037	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2350	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2038	w->priority = pri;	2351	ev_set_priority (w, pri);
2039	}	2352	}
2040		2353
2041	void inline_speed	2354	inline_speed void
2042	ev_start (EV_P_ W w, int active)	2355	ev_start (EV_P_ W w, int active)
2043	{	2356	{
2044	pri_adjust (EV_A_ w);	2357	pri_adjust (EV_A_ w);
2045	w->active = active;	2358	w->active = active;
2046	ev_ref (EV_A);	2359	ev_ref (EV_A);
2047	}	2360	}
2048		2361
2049	void inline_size	2362	inline_size void
2050	ev_stop (EV_P_ W w)	2363	ev_stop (EV_P_ W w)
2051	{	2364	{
2052	ev_unref (EV_A);	2365	ev_unref (EV_A);
2053	w->active = 0;	2366	w->active = 0;
2054	}	2367	}
…		…
2061	int fd = w->fd;	2374	int fd = w->fd;
2062		2375
2063	if (expect_false (ev_is_active (w)))	2376	if (expect_false (ev_is_active (w)))
2064	return;	2377	return;
2065		2378
2066	assert (("ev_io_start called with negative fd", fd >= 0));	2379	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2380	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2067		2381
2068	EV_FREQUENT_CHECK;	2382	EV_FREQUENT_CHECK;
2069		2383
2070	ev_start (EV_A_ (W)w, 1);	2384	ev_start (EV_A_ (W)w, 1);
2071	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2385	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2072	wlist_add (&anfds[fd].head, (WL)w);	2386	wlist_add (&anfds[fd].head, (WL)w);
2073		2387
2074	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2388	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2075	w->events &= ~EV_IOFDSET;	2389	w->events &= ~EV__IOFDSET;
2076		2390
2077	EV_FREQUENT_CHECK;	2391	EV_FREQUENT_CHECK;
2078	}	2392	}
2079		2393
2080	void noinline	2394	void noinline
…		…
2082	{	2396	{
2083	clear_pending (EV_A_ (W)w);	2397	clear_pending (EV_A_ (W)w);
2084	if (expect_false (!ev_is_active (w)))	2398	if (expect_false (!ev_is_active (w)))
2085	return;	2399	return;
2086		2400
2087	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2401	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2088		2402
2089	EV_FREQUENT_CHECK;	2403	EV_FREQUENT_CHECK;
2090		2404
2091	wlist_del (&anfds[w->fd].head, (WL)w);	2405	wlist_del (&anfds[w->fd].head, (WL)w);
2092	ev_stop (EV_A_ (W)w);	2406	ev_stop (EV_A_ (W)w);
…		…
2102	if (expect_false (ev_is_active (w)))	2416	if (expect_false (ev_is_active (w)))
2103	return;	2417	return;
2104		2418
2105	ev_at (w) += mn_now;	2419	ev_at (w) += mn_now;
2106		2420
2107	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2421	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2108		2422
2109	EV_FREQUENT_CHECK;	2423	EV_FREQUENT_CHECK;
2110		2424
2111	++timercnt;	2425	++timercnt;
2112	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);	2426	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
…		…
2115	ANHE_at_cache (timers [ev_active (w)]);	2429	ANHE_at_cache (timers [ev_active (w)]);
2116	upheap (timers, ev_active (w));	2430	upheap (timers, ev_active (w));
2117		2431
2118	EV_FREQUENT_CHECK;	2432	EV_FREQUENT_CHECK;
2119		2433
2120	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2434	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2121	}	2435	}
2122		2436
2123	void noinline	2437	void noinline
2124	ev_timer_stop (EV_P_ ev_timer *w)	2438	ev_timer_stop (EV_P_ ev_timer *w)
2125	{	2439	{
…		…
2130	EV_FREQUENT_CHECK;	2444	EV_FREQUENT_CHECK;
2131		2445
2132	{	2446	{
2133	int active = ev_active (w);	2447	int active = ev_active (w);
2134		2448
2135	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2449	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2136		2450
2137	--timercnt;	2451	--timercnt;
2138		2452
2139	if (expect_true (active < timercnt + HEAP0))	2453	if (expect_true (active < timercnt + HEAP0))
2140	{	2454	{
…		…
2173	}	2487	}
2174		2488
2175	EV_FREQUENT_CHECK;	2489	EV_FREQUENT_CHECK;
2176	}	2490	}
2177		2491
		2492	ev_tstamp
		2493	ev_timer_remaining (EV_P_ ev_timer *w)
		2494	{
		2495	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
		2496	}
		2497
2178	#if EV_PERIODIC_ENABLE	2498	#if EV_PERIODIC_ENABLE
2179	void noinline	2499	void noinline
2180	ev_periodic_start (EV_P_ ev_periodic *w)	2500	ev_periodic_start (EV_P_ ev_periodic *w)
2181	{	2501	{
2182	if (expect_false (ev_is_active (w)))	2502	if (expect_false (ev_is_active (w)))
…		…
2184		2504
2185	if (w->reschedule_cb)	2505	if (w->reschedule_cb)
2186	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2506	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2187	else if (w->interval)	2507	else if (w->interval)
2188	{	2508	{
2189	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2509	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2190	/* this formula differs from the one in periodic_reify because we do not always round up */	2510	/* this formula differs from the one in periodic_reify because we do not always round up */
2191	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2511	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2192	}	2512	}
2193	else	2513	else
2194	ev_at (w) = w->offset;	2514	ev_at (w) = w->offset;
…		…
2202	ANHE_at_cache (periodics [ev_active (w)]);	2522	ANHE_at_cache (periodics [ev_active (w)]);
2203	upheap (periodics, ev_active (w));	2523	upheap (periodics, ev_active (w));
2204		2524
2205	EV_FREQUENT_CHECK;	2525	EV_FREQUENT_CHECK;
2206		2526
2207	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2527	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2208	}	2528	}
2209		2529
2210	void noinline	2530	void noinline
2211	ev_periodic_stop (EV_P_ ev_periodic *w)	2531	ev_periodic_stop (EV_P_ ev_periodic *w)
2212	{	2532	{
…		…
2217	EV_FREQUENT_CHECK;	2537	EV_FREQUENT_CHECK;
2218		2538
2219	{	2539	{
2220	int active = ev_active (w);	2540	int active = ev_active (w);
2221		2541
2222	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2542	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2223		2543
2224	--periodiccnt;	2544	--periodiccnt;
2225		2545
2226	if (expect_true (active < periodiccnt + HEAP0))	2546	if (expect_true (active < periodiccnt + HEAP0))
2227	{	2547	{
…		…
2250		2570
2251	void noinline	2571	void noinline
2252	ev_signal_start (EV_P_ ev_signal *w)	2572	ev_signal_start (EV_P_ ev_signal *w)
2253	{	2573	{
2254	#if EV_MULTIPLICITY	2574	#if EV_MULTIPLICITY
2255	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2575	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2256	#endif	2576	#endif
2257	if (expect_false (ev_is_active (w)))	2577	if (expect_false (ev_is_active (w)))
2258	return;	2578	return;
2259		2579
2260	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2580	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2261		2581
2262	evpipe_init (EV_A);	2582	evpipe_init (EV_A);
2263		2583
2264	EV_FREQUENT_CHECK;	2584	EV_FREQUENT_CHECK;
2265		2585
…		…
2268	sigset_t full, prev;	2588	sigset_t full, prev;
2269	sigfillset (&full);	2589	sigfillset (&full);
2270	sigprocmask (SIG_SETMASK, &full, &prev);	2590	sigprocmask (SIG_SETMASK, &full, &prev);
2271	#endif	2591	#endif
2272		2592
2273	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2593	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2274		2594
2275	#ifndef _WIN32	2595	#ifndef _WIN32
2276	sigprocmask (SIG_SETMASK, &prev, 0);	2596	sigprocmask (SIG_SETMASK, &prev, 0);
2277	#endif	2597	#endif
2278	}	2598	}
…		…
2283	if (!((WL)w)->next)	2603	if (!((WL)w)->next)
2284	{	2604	{
2285	#if _WIN32	2605	#if _WIN32
2286	signal (w->signum, ev_sighandler);	2606	signal (w->signum, ev_sighandler);
2287	#else	2607	#else
2288	struct sigaction sa;	2608	struct sigaction sa = { };
2289	sa.sa_handler = ev_sighandler;	2609	sa.sa_handler = ev_sighandler;
2290	sigfillset (&sa.sa_mask);	2610	sigfillset (&sa.sa_mask);
2291	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2611	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2292	sigaction (w->signum, &sa, 0);	2612	sigaction (w->signum, &sa, 0);
2293	#endif	2613	#endif
…		…
2316		2636
2317	void	2637	void
2318	ev_child_start (EV_P_ ev_child *w)	2638	ev_child_start (EV_P_ ev_child *w)
2319	{	2639	{
2320	#if EV_MULTIPLICITY	2640	#if EV_MULTIPLICITY
2321	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2641	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2322	#endif	2642	#endif
2323	if (expect_false (ev_is_active (w)))	2643	if (expect_false (ev_is_active (w)))
2324	return;	2644	return;
2325		2645
2326	EV_FREQUENT_CHECK;	2646	EV_FREQUENT_CHECK;
…		…
2351	# ifdef _WIN32	2671	# ifdef _WIN32
2352	# undef lstat	2672	# undef lstat
2353	# define lstat(a,b) _stati64 (a,b)	2673	# define lstat(a,b) _stati64 (a,b)
2354	# endif	2674	# endif
2355		2675
2356	#define DEF_STAT_INTERVAL 5.0074891	2676	#define DEF_STAT_INTERVAL 5.0074891
		2677	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2357	#define MIN_STAT_INTERVAL 0.1074891	2678	#define MIN_STAT_INTERVAL 0.1074891
2358		2679
2359	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2680	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2360		2681
2361	#if EV_USE_INOTIFY	2682	#if EV_USE_INOTIFY
2362	# define EV_INOTIFY_BUFSIZE 8192	2683	# define EV_INOTIFY_BUFSIZE 8192
…		…
2366	{	2687	{
2367	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);	2688	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2368		2689
2369	if (w->wd < 0)	2690	if (w->wd < 0)
2370	{	2691	{
		2692	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2371	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2693	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2372		2694
2373	/* monitor some parent directory for speedup hints */	2695	/* monitor some parent directory for speedup hints */
2374	/* note that exceeding the hardcoded limit is not a correctness issue, */	2696	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2375	/* but an efficiency issue only */	2697	/* but an efficiency issue only */
2376	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2698	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2377	{	2699	{
2378	char path [4096];	2700	char path [4096];
2379	strcpy (path, w->path);	2701	strcpy (path, w->path);
…		…
2383	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2705	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2384	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2706	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2385		2707
2386	char *pend = strrchr (path, '/');	2708	char *pend = strrchr (path, '/');
2387		2709
2388	if (!pend)	2710	if (!pend || pend == path)
2389	break; /* whoops, no '/', complain to your admin */	2711	break;
2390		2712
2391	*pend = 0;	2713	*pend = 0;
2392	w->wd = inotify_add_watch (fs_fd, path, mask);	2714	w->wd = inotify_add_watch (fs_fd, path, mask);
2393	}	2715	}
2394	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2716	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2395	}	2717	}
2396	}	2718	}
2397	else
2398	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2399		2719
2400	if (w->wd >= 0)	2720	if (w->wd >= 0)
		2721	{
2401	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2722	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2723
		2724	/* now local changes will be tracked by inotify, but remote changes won't */
		2725	/* unless the filesystem it known to be local, we therefore still poll */
		2726	/* also do poll on <2.6.25, but with normal frequency */
		2727	struct statfs sfs;
		2728
		2729	if (fs_2625 && !statfs (w->path, &sfs))
		2730	if (sfs.f_type == 0x1373 /* devfs */
		2731	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2732	|| sfs.f_type == 0x3153464a /* jfs */
		2733	|| sfs.f_type == 0x52654973 /* reiser3 */
		2734	|| sfs.f_type == 0x01021994 /* tempfs */
		2735	|| sfs.f_type == 0x58465342 /* xfs */)
		2736	return;
		2737
		2738	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2739	ev_timer_again (EV_A_ &w->timer);
		2740	}
2402	}	2741	}
2403		2742
2404	static void noinline	2743	static void noinline
2405	infy_del (EV_P_ ev_stat *w)	2744	infy_del (EV_P_ ev_stat *w)
2406	{	2745	{
…		…
2420		2759
2421	static void noinline	2760	static void noinline
2422	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2761	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2423	{	2762	{
2424	if (slot < 0)	2763	if (slot < 0)
2425	/* overflow, need to check for all hahs slots */	2764	/* overflow, need to check for all hash slots */
2426	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2765	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2427	infy_wd (EV_A_ slot, wd, ev);	2766	infy_wd (EV_A_ slot, wd, ev);
2428	else	2767	else
2429	{	2768	{
2430	WL w_;	2769	WL w_;
…		…
2436		2775
2437	if (w->wd == wd || wd == -1)	2776	if (w->wd == wd || wd == -1)
2438	{	2777	{
2439	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2778	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2440	{	2779	{
		2780	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2441	w->wd = -1;	2781	w->wd = -1;
2442	infy_add (EV_A_ w); /* re-add, no matter what */	2782	infy_add (EV_A_ w); /* re-add, no matter what */
2443	}	2783	}
2444		2784
2445	stat_timer_cb (EV_A_ &w->timer, 0);	2785	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2458		2798
2459	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2799	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2460	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2800	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2461	}	2801	}
2462		2802
2463	void inline_size	2803	inline_size void
		2804	check_2625 (EV_P)
		2805	{
		2806	/* kernels < 2.6.25 are borked
		2807	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2808	*/
		2809	struct utsname buf;
		2810	int major, minor, micro;
		2811
		2812	if (uname (&buf))
		2813	return;
		2814
		2815	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2816	return;
		2817
		2818	if (major < 2
		2819	|| (major == 2 && minor < 6)
		2820	|| (major == 2 && minor == 6 && micro < 25))
		2821	return;
		2822
		2823	fs_2625 = 1;
		2824	}
		2825
		2826	inline_size void
2464	infy_init (EV_P)	2827	infy_init (EV_P)
2465	{	2828	{
2466	if (fs_fd != -2)	2829	if (fs_fd != -2)
2467	return;	2830	return;
		2831
		2832	fs_fd = -1;
		2833
		2834	check_2625 (EV_A);
2468		2835
2469	fs_fd = inotify_init ();	2836	fs_fd = inotify_init ();
2470		2837
2471	if (fs_fd >= 0)	2838	if (fs_fd >= 0)
2472	{	2839	{
…		…
2474	ev_set_priority (&fs_w, EV_MAXPRI);	2841	ev_set_priority (&fs_w, EV_MAXPRI);
2475	ev_io_start (EV_A_ &fs_w);	2842	ev_io_start (EV_A_ &fs_w);
2476	}	2843	}
2477	}	2844	}
2478		2845
2479	void inline_size	2846	inline_size void
2480	infy_fork (EV_P)	2847	infy_fork (EV_P)
2481	{	2848	{
2482	int slot;	2849	int slot;
2483		2850
2484	if (fs_fd < 0)	2851	if (fs_fd < 0)
…		…
2500	w->wd = -1;	2867	w->wd = -1;
2501		2868
2502	if (fs_fd >= 0)	2869	if (fs_fd >= 0)
2503	infy_add (EV_A_ w); /* re-add, no matter what */	2870	infy_add (EV_A_ w); /* re-add, no matter what */
2504	else	2871	else
2505	ev_timer_start (EV_A_ &w->timer);	2872	ev_timer_again (EV_A_ &w->timer);
2506	}	2873	}
2507
2508	}	2874	}
2509	}	2875	}
2510		2876
		2877	#endif
		2878
		2879	#ifdef _WIN32
		2880	# define EV_LSTAT(p,b) _stati64 (p, b)
		2881	#else
		2882	# define EV_LSTAT(p,b) lstat (p, b)
2511	#endif	2883	#endif
2512		2884
2513	void	2885	void
2514	ev_stat_stat (EV_P_ ev_stat *w)	2886	ev_stat_stat (EV_P_ ev_stat *w)
2515	{	2887	{
…		…
2542	|| w->prev.st_atime != w->attr.st_atime	2914	|| w->prev.st_atime != w->attr.st_atime
2543	|| w->prev.st_mtime != w->attr.st_mtime	2915	|| w->prev.st_mtime != w->attr.st_mtime
2544	|| w->prev.st_ctime != w->attr.st_ctime	2916	|| w->prev.st_ctime != w->attr.st_ctime
2545	) {	2917	) {
2546	#if EV_USE_INOTIFY	2918	#if EV_USE_INOTIFY
		2919	if (fs_fd >= 0)
		2920	{
2547	infy_del (EV_A_ w);	2921	infy_del (EV_A_ w);
2548	infy_add (EV_A_ w);	2922	infy_add (EV_A_ w);
2549	ev_stat_stat (EV_A_ w); /* avoid race... */	2923	ev_stat_stat (EV_A_ w); /* avoid race... */
		2924	}
2550	#endif	2925	#endif
2551		2926
2552	ev_feed_event (EV_A_ w, EV_STAT);	2927	ev_feed_event (EV_A_ w, EV_STAT);
2553	}	2928	}
2554	}	2929	}
…		…
2557	ev_stat_start (EV_P_ ev_stat *w)	2932	ev_stat_start (EV_P_ ev_stat *w)
2558	{	2933	{
2559	if (expect_false (ev_is_active (w)))	2934	if (expect_false (ev_is_active (w)))
2560	return;	2935	return;
2561		2936
2562	/* since we use memcmp, we need to clear any padding data etc. */
2563	memset (&w->prev, 0, sizeof (ev_statdata));
2564	memset (&w->attr, 0, sizeof (ev_statdata));
2565
2566	ev_stat_stat (EV_A_ w);	2937	ev_stat_stat (EV_A_ w);
2567		2938
		2939	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2568	if (w->interval < MIN_STAT_INTERVAL)	2940	w->interval = MIN_STAT_INTERVAL;
2569	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2570		2941
2571	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2942	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2572	ev_set_priority (&w->timer, ev_priority (w));	2943	ev_set_priority (&w->timer, ev_priority (w));
2573		2944
2574	#if EV_USE_INOTIFY	2945	#if EV_USE_INOTIFY
2575	infy_init (EV_A);	2946	infy_init (EV_A);
2576		2947
2577	if (fs_fd >= 0)	2948	if (fs_fd >= 0)
2578	infy_add (EV_A_ w);	2949	infy_add (EV_A_ w);
2579	else	2950	else
2580	#endif	2951	#endif
2581	ev_timer_start (EV_A_ &w->timer);	2952	ev_timer_again (EV_A_ &w->timer);
2582		2953
2583	ev_start (EV_A_ (W)w, 1);	2954	ev_start (EV_A_ (W)w, 1);
2584		2955
2585	EV_FREQUENT_CHECK;	2956	EV_FREQUENT_CHECK;
2586	}	2957	}
…		…
2756	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3127	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2757	}	3128	}
2758	}	3129	}
2759	}	3130	}
2760		3131
		3132	static void
		3133	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3134	{
		3135	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3136
		3137	ev_embed_stop (EV_A_ w);
		3138
		3139	{
		3140	struct ev_loop *loop = w->other;
		3141
		3142	ev_loop_fork (EV_A);
		3143	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3144	}
		3145
		3146	ev_embed_start (EV_A_ w);
		3147	}
		3148
2761	#if 0	3149	#if 0
2762	static void	3150	static void
2763	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3151	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2764	{	3152	{
2765	ev_idle_stop (EV_A_ idle);	3153	ev_idle_stop (EV_A_ idle);
…		…
2772	if (expect_false (ev_is_active (w)))	3160	if (expect_false (ev_is_active (w)))
2773	return;	3161	return;
2774		3162
2775	{	3163	{
2776	struct ev_loop *loop = w->other;	3164	struct ev_loop *loop = w->other;
2777	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3165	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2778	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3166	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2779	}	3167	}
2780		3168
2781	EV_FREQUENT_CHECK;	3169	EV_FREQUENT_CHECK;
2782		3170
…		…
2785		3173
2786	ev_prepare_init (&w->prepare, embed_prepare_cb);	3174	ev_prepare_init (&w->prepare, embed_prepare_cb);
2787	ev_set_priority (&w->prepare, EV_MINPRI);	3175	ev_set_priority (&w->prepare, EV_MINPRI);
2788	ev_prepare_start (EV_A_ &w->prepare);	3176	ev_prepare_start (EV_A_ &w->prepare);
2789		3177
		3178	ev_fork_init (&w->fork, embed_fork_cb);
		3179	ev_fork_start (EV_A_ &w->fork);
		3180
2790	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3181	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2791		3182
2792	ev_start (EV_A_ (W)w, 1);	3183	ev_start (EV_A_ (W)w, 1);
2793		3184
2794	EV_FREQUENT_CHECK;	3185	EV_FREQUENT_CHECK;
…		…
2801	if (expect_false (!ev_is_active (w)))	3192	if (expect_false (!ev_is_active (w)))
2802	return;	3193	return;
2803		3194
2804	EV_FREQUENT_CHECK;	3195	EV_FREQUENT_CHECK;
2805		3196
2806	ev_io_stop (EV_A_ &w->io);	3197	ev_io_stop (EV_A_ &w->io);
2807	ev_prepare_stop (EV_A_ &w->prepare);	3198	ev_prepare_stop (EV_A_ &w->prepare);
2808		3199	ev_fork_stop (EV_A_ &w->fork);
2809	ev_stop (EV_A_ (W)w);
2810		3200
2811	EV_FREQUENT_CHECK;	3201	EV_FREQUENT_CHECK;
2812	}	3202	}
2813	#endif	3203	#endif
2814		3204
…		…
2911	once_cb (EV_P_ struct ev_once *once, int revents)	3301	once_cb (EV_P_ struct ev_once *once, int revents)
2912	{	3302	{
2913	void (*cb)(int revents, void *arg) = once->cb;	3303	void (*cb)(int revents, void *arg) = once->cb;
2914	void *arg = once->arg;	3304	void *arg = once->arg;
2915		3305
2916	ev_io_stop (EV_A_ &once->io);	3306	ev_io_stop (EV_A_ &once->io);
2917	ev_timer_stop (EV_A_ &once->to);	3307	ev_timer_stop (EV_A_ &once->to);
2918	ev_free (once);	3308	ev_free (once);
2919		3309
2920	cb (revents, arg);	3310	cb (revents, arg);
2921	}	3311	}
2922		3312
2923	static void	3313	static void
2924	once_cb_io (EV_P_ ev_io *w, int revents)	3314	once_cb_io (EV_P_ ev_io *w, int revents)
2925	{	3315	{
2926	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3316	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3317
		3318	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2927	}	3319	}
2928		3320
2929	static void	3321	static void
2930	once_cb_to (EV_P_ ev_timer *w, int revents)	3322	once_cb_to (EV_P_ ev_timer *w, int revents)
2931	{	3323	{
2932	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3324	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3325
		3326	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2933	}	3327	}
2934		3328
2935	void	3329	void
2936	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3330	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2937	{	3331	{
…		…
2959	ev_timer_set (&once->to, timeout, 0.);	3353	ev_timer_set (&once->to, timeout, 0.);
2960	ev_timer_start (EV_A_ &once->to);	3354	ev_timer_start (EV_A_ &once->to);
2961	}	3355	}
2962	}	3356	}
2963		3357
		3358	/*****************************************************************************/
		3359
		3360	#if EV_WALK_ENABLE
		3361	void
		3362	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3363	{
		3364	int i, j;
		3365	ev_watcher_list *wl, *wn;
		3366
		3367	if (types & (EV_IO | EV_EMBED))
		3368	for (i = 0; i < anfdmax; ++i)
		3369	for (wl = anfds [i].head; wl; )
		3370	{
		3371	wn = wl->next;
		3372
		3373	#if EV_EMBED_ENABLE
		3374	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3375	{
		3376	if (types & EV_EMBED)
		3377	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3378	}
		3379	else
		3380	#endif
		3381	#if EV_USE_INOTIFY
		3382	if (ev_cb ((ev_io *)wl) == infy_cb)
		3383	;
		3384	else
		3385	#endif
		3386	if ((ev_io *)wl != &pipe_w)
		3387	if (types & EV_IO)
		3388	cb (EV_A_ EV_IO, wl);
		3389
		3390	wl = wn;
		3391	}
		3392
		3393	if (types & (EV_TIMER | EV_STAT))
		3394	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3395	#if EV_STAT_ENABLE
		3396	/*TODO: timer is not always active*/
		3397	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3398	{
		3399	if (types & EV_STAT)
		3400	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3401	}
		3402	else
		3403	#endif
		3404	if (types & EV_TIMER)
		3405	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3406
		3407	#if EV_PERIODIC_ENABLE
		3408	if (types & EV_PERIODIC)
		3409	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3410	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3411	#endif
		3412
		3413	#if EV_IDLE_ENABLE
		3414	if (types & EV_IDLE)
		3415	for (j = NUMPRI; i--; )
		3416	for (i = idlecnt [j]; i--; )
		3417	cb (EV_A_ EV_IDLE, idles [j][i]);
		3418	#endif
		3419
		3420	#if EV_FORK_ENABLE
		3421	if (types & EV_FORK)
		3422	for (i = forkcnt; i--; )
		3423	if (ev_cb (forks [i]) != embed_fork_cb)
		3424	cb (EV_A_ EV_FORK, forks [i]);
		3425	#endif
		3426
		3427	#if EV_ASYNC_ENABLE
		3428	if (types & EV_ASYNC)
		3429	for (i = asynccnt; i--; )
		3430	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3431	#endif
		3432
		3433	if (types & EV_PREPARE)
		3434	for (i = preparecnt; i--; )
		3435	#if EV_EMBED_ENABLE
		3436	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3437	#endif
		3438	cb (EV_A_ EV_PREPARE, prepares [i]);
		3439
		3440	if (types & EV_CHECK)
		3441	for (i = checkcnt; i--; )
		3442	cb (EV_A_ EV_CHECK, checks [i]);
		3443
		3444	if (types & EV_SIGNAL)
		3445	for (i = 0; i < signalmax; ++i)
		3446	for (wl = signals [i].head; wl; )
		3447	{
		3448	wn = wl->next;
		3449	cb (EV_A_ EV_SIGNAL, wl);
		3450	wl = wn;
		3451	}
		3452
		3453	if (types & EV_CHILD)
		3454	for (i = EV_PID_HASHSIZE; i--; )
		3455	for (wl = childs [i]; wl; )
		3456	{
		3457	wn = wl->next;
		3458	cb (EV_A_ EV_CHILD, wl);
		3459	wl = wn;
		3460	}
		3461	/* EV_STAT 0x00001000 /* stat data changed */
		3462	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3463	}
		3464	#endif
		3465
2964	#if EV_MULTIPLICITY	3466	#if EV_MULTIPLICITY
2965	#include "ev_wrap.h"	3467	#include "ev_wrap.h"
2966	#endif	3468	#endif
2967		3469
2968	#ifdef __cplusplus	3470	#ifdef __cplusplus

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