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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 1.295 by root, Wed Jul 8 04:29:31 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	/* file descriptor info structure */
435	typedef struct	496	typedef struct
436	{	497	{
437	WL head;	498	WL head;
438	unsigned char events;	499	unsigned char events; /* the events watched for */
		500	unsigned char reify; /* flag set when this ANFD needs reification */
		501	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
439	unsigned char reify;	502	unsigned char unused;
		503	#if EV_USE_EPOLL
		504	unsigned int egen; /* generation counter to counter epoll bugs */
		505	#endif
440	#if EV_SELECT_IS_WINSOCKET	506	#if EV_SELECT_IS_WINSOCKET
441	SOCKET handle;	507	SOCKET handle;
442	#endif	508	#endif
443	} ANFD;	509	} ANFD;
444		510
		511	/* stores the pending event set for a given watcher */
445	typedef struct	512	typedef struct
446	{	513	{
447	W w;	514	W w;
448	int events;	515	int events; /* the pending event set for the given watcher */
449	} ANPENDING;	516	} ANPENDING;
450		517
451	#if EV_USE_INOTIFY	518	#if EV_USE_INOTIFY
452	/* hash table entry per inotify-id */	519	/* hash table entry per inotify-id */
453	typedef struct	520	typedef struct
…		…
456	} ANFS;	523	} ANFS;
457	#endif	524	#endif
458		525
459	/* Heap Entry */	526	/* Heap Entry */
460	#if EV_HEAP_CACHE_AT	527	#if EV_HEAP_CACHE_AT
		528	/* a heap element */
461	typedef struct {	529	typedef struct {
462	ev_tstamp at;	530	ev_tstamp at;
463	WT w;	531	WT w;
464	} ANHE;	532	} ANHE;
465		533
466	#define ANHE_w(he) (he).w /* access watcher, read-write */	534	#define ANHE_w(he) (he).w /* access watcher, read-write */
467	#define ANHE_at(he) (he).at /* access cached at, read-only */	535	#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 */	536	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
469	#else	537	#else
		538	/* a heap element */
470	typedef WT ANHE;	539	typedef WT ANHE;
471		540
472	#define ANHE_w(he) (he)	541	#define ANHE_w(he) (he)
473	#define ANHE_at(he) (he)->at	542	#define ANHE_at(he) (he)->at
474	#define ANHE_at_cache(he)	543	#define ANHE_at_cache(he)
…		…
500		569
501	#endif	570	#endif
502		571
503	/*****************************************************************************/	572	/*****************************************************************************/
504		573
		574	#ifndef EV_HAVE_EV_TIME
505	ev_tstamp	575	ev_tstamp
506	ev_time (void)	576	ev_time (void)
507	{	577	{
508	#if EV_USE_REALTIME	578	#if EV_USE_REALTIME
		579	if (expect_true (have_realtime))
		580	{
509	struct timespec ts;	581	struct timespec ts;
510	clock_gettime (CLOCK_REALTIME, &ts);	582	clock_gettime (CLOCK_REALTIME, &ts);
511	return ts.tv_sec + ts.tv_nsec * 1e-9;	583	return ts.tv_sec + ts.tv_nsec * 1e-9;
512	#else	584	}
		585	#endif
		586
513	struct timeval tv;	587	struct timeval tv;
514	gettimeofday (&tv, 0);	588	gettimeofday (&tv, 0);
515	return tv.tv_sec + tv.tv_usec * 1e-6;	589	return tv.tv_sec + tv.tv_usec * 1e-6;
516	#endif
517	}	590	}
		591	#endif
518		592
519	ev_tstamp inline_size	593	inline_size ev_tstamp
520	get_clock (void)	594	get_clock (void)
521	{	595	{
522	#if EV_USE_MONOTONIC	596	#if EV_USE_MONOTONIC
523	if (expect_true (have_monotonic))	597	if (expect_true (have_monotonic))
524	{	598	{
…		…
557	struct timeval tv;	631	struct timeval tv;
558		632
559	tv.tv_sec = (time_t)delay;	633	tv.tv_sec = (time_t)delay;
560	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	634	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
561		635
		636	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		637	/* somehting not guaranteed by newer posix versions, but guaranteed */
		638	/* by older ones */
562	select (0, 0, 0, 0, &tv);	639	select (0, 0, 0, 0, &tv);
563	#endif	640	#endif
564	}	641	}
565	}	642	}
566		643
567	/*****************************************************************************/	644	/*****************************************************************************/
568		645
569	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	646	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
570		647
571	int inline_size	648	/* find a suitable new size for the given array, */
		649	/* hopefully by rounding to a ncie-to-malloc size */
		650	inline_size int
572	array_nextsize (int elem, int cur, int cnt)	651	array_nextsize (int elem, int cur, int cnt)
573	{	652	{
574	int ncur = cur + 1;	653	int ncur = cur + 1;
575		654
576	do	655	do
…		…
593	array_realloc (int elem, void *base, int *cur, int cnt)	672	array_realloc (int elem, void *base, int *cur, int cnt)
594	{	673	{
595	*cur = array_nextsize (elem, *cur, cnt);	674	*cur = array_nextsize (elem, *cur, cnt);
596	return ev_realloc (base, elem * *cur);	675	return ev_realloc (base, elem * *cur);
597	}	676	}
		677
		678	#define array_init_zero(base,count) \
		679	memset ((void *)(base), 0, sizeof (*(base)) * (count))
598		680
599	#define array_needsize(type,base,cur,cnt,init) \	681	#define array_needsize(type,base,cur,cnt,init) \
600	if (expect_false ((cnt) > (cur))) \	682	if (expect_false ((cnt) > (cur))) \
601	{ \	683	{ \
602	int ocur_ = (cur); \	684	int ocur_ = (cur); \
…		…
614	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	696	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
615	}	697	}
616	#endif	698	#endif
617		699
618	#define array_free(stem, idx) \	700	#define array_free(stem, idx) \
619	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	701	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
620		702
621	/*****************************************************************************/	703	/*****************************************************************************/
		704
		705	/* dummy callback for pending events */
		706	static void noinline
		707	pendingcb (EV_P_ ev_prepare *w, int revents)
		708	{
		709	}
622		710
623	void noinline	711	void noinline
624	ev_feed_event (EV_P_ void *w, int revents)	712	ev_feed_event (EV_P_ void *w, int revents)
625	{	713	{
626	W w_ = (W)w;	714	W w_ = (W)w;
…		…
635	pendings [pri][w_->pending - 1].w = w_;	723	pendings [pri][w_->pending - 1].w = w_;
636	pendings [pri][w_->pending - 1].events = revents;	724	pendings [pri][w_->pending - 1].events = revents;
637	}	725	}
638	}	726	}
639		727
640	void inline_speed	728	inline_speed void
		729	feed_reverse (EV_P_ W w)
		730	{
		731	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		732	rfeeds [rfeedcnt++] = w;
		733	}
		734
		735	inline_size void
		736	feed_reverse_done (EV_P_ int revents)
		737	{
		738	do
		739	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		740	while (rfeedcnt);
		741	}
		742
		743	inline_speed void
641	queue_events (EV_P_ W *events, int eventcnt, int type)	744	queue_events (EV_P_ W *events, int eventcnt, int type)
642	{	745	{
643	int i;	746	int i;
644		747
645	for (i = 0; i < eventcnt; ++i)	748	for (i = 0; i < eventcnt; ++i)
646	ev_feed_event (EV_A_ events [i], type);	749	ev_feed_event (EV_A_ events [i], type);
647	}	750	}
648		751
649	/*****************************************************************************/	752	/*****************************************************************************/
650		753
651	void inline_size	754	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)	755	fd_event (EV_P_ int fd, int revents)
666	{	756	{
667	ANFD *anfd = anfds + fd;	757	ANFD *anfd = anfds + fd;
668	ev_io *w;	758	ev_io *w;
669		759
…		…
681	{	771	{
682	if (fd >= 0 && fd < anfdmax)	772	if (fd >= 0 && fd < anfdmax)
683	fd_event (EV_A_ fd, revents);	773	fd_event (EV_A_ fd, revents);
684	}	774	}
685		775
686	void inline_size	776	/* make sure the external fd watch events are in-sync */
		777	/* with the kernel/libev internal state */
		778	inline_size void
687	fd_reify (EV_P)	779	fd_reify (EV_P)
688	{	780	{
689	int i;	781	int i;
690		782
691	for (i = 0; i < fdchangecnt; ++i)	783	for (i = 0; i < fdchangecnt; ++i)
…		…
700	events |= (unsigned char)w->events;	792	events |= (unsigned char)w->events;
701		793
702	#if EV_SELECT_IS_WINSOCKET	794	#if EV_SELECT_IS_WINSOCKET
703	if (events)	795	if (events)
704	{	796	{
705	unsigned long argp;	797	unsigned long arg;
706	#ifdef EV_FD_TO_WIN32_HANDLE	798	#ifdef EV_FD_TO_WIN32_HANDLE
707	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	799	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
708	#else	800	#else
709	anfd->handle = _get_osfhandle (fd);	801	anfd->handle = _get_osfhandle (fd);
710	#endif	802	#endif
711	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	803	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
712	}	804	}
713	#endif	805	#endif
714		806
715	{	807	{
716	unsigned char o_events = anfd->events;	808	unsigned char o_events = anfd->events;
717	unsigned char o_reify = anfd->reify;	809	unsigned char o_reify = anfd->reify;
718		810
719	anfd->reify = 0;	811	anfd->reify = 0;
720	anfd->events = events;	812	anfd->events = events;
721		813
722	if (o_events != events || o_reify & EV_IOFDSET)	814	if (o_events != events || o_reify & EV__IOFDSET)
723	backend_modify (EV_A_ fd, o_events, events);	815	backend_modify (EV_A_ fd, o_events, events);
724	}	816	}
725	}	817	}
726		818
727	fdchangecnt = 0;	819	fdchangecnt = 0;
728	}	820	}
729		821
730	void inline_size	822	/* something about the given fd changed */
		823	inline_size void
731	fd_change (EV_P_ int fd, int flags)	824	fd_change (EV_P_ int fd, int flags)
732	{	825	{
733	unsigned char reify = anfds [fd].reify;	826	unsigned char reify = anfds [fd].reify;
734	anfds [fd].reify |= flags;	827	anfds [fd].reify |= flags;
735		828
…		…
739	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	832	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
740	fdchanges [fdchangecnt - 1] = fd;	833	fdchanges [fdchangecnt - 1] = fd;
741	}	834	}
742	}	835	}
743		836
744	void inline_speed	837	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		838	inline_speed void
745	fd_kill (EV_P_ int fd)	839	fd_kill (EV_P_ int fd)
746	{	840	{
747	ev_io *w;	841	ev_io *w;
748		842
749	while ((w = (ev_io *)anfds [fd].head))	843	while ((w = (ev_io *)anfds [fd].head))
…		…
751	ev_io_stop (EV_A_ w);	845	ev_io_stop (EV_A_ w);
752	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	846	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
753	}	847	}
754	}	848	}
755		849
756	int inline_size	850	/* check whether the given fd is atcually valid, for error recovery */
		851	inline_size int
757	fd_valid (int fd)	852	fd_valid (int fd)
758	{	853	{
759	#ifdef _WIN32	854	#ifdef _WIN32
760	return _get_osfhandle (fd) != -1;	855	return _get_osfhandle (fd) != -1;
761	#else	856	#else
…		…
769	{	864	{
770	int fd;	865	int fd;
771		866
772	for (fd = 0; fd < anfdmax; ++fd)	867	for (fd = 0; fd < anfdmax; ++fd)
773	if (anfds [fd].events)	868	if (anfds [fd].events)
774	if (!fd_valid (fd) == -1 && errno == EBADF)	869	if (!fd_valid (fd) && errno == EBADF)
775	fd_kill (EV_A_ fd);	870	fd_kill (EV_A_ fd);
776	}	871	}
777		872
778	/* called on ENOMEM in select/poll to kill some fds and retry */	873	/* called on ENOMEM in select/poll to kill some fds and retry */
779	static void noinline	874	static void noinline
…		…
797		892
798	for (fd = 0; fd < anfdmax; ++fd)	893	for (fd = 0; fd < anfdmax; ++fd)
799	if (anfds [fd].events)	894	if (anfds [fd].events)
800	{	895	{
801	anfds [fd].events = 0;	896	anfds [fd].events = 0;
		897	anfds [fd].emask = 0;
802	fd_change (EV_A_ fd, EV_IOFDSET | 1);	898	fd_change (EV_A_ fd, EV__IOFDSET | 1);
803	}	899	}
804	}	900	}
805		901
806	/*****************************************************************************/	902	/*****************************************************************************/
807		903
…		…
823	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	919	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
824	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)	920	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
825	#define UPHEAP_DONE(p,k) ((p) == (k))	921	#define UPHEAP_DONE(p,k) ((p) == (k))
826		922
827	/* away from the root */	923	/* away from the root */
828	void inline_speed	924	inline_speed void
829	downheap (ANHE *heap, int N, int k)	925	downheap (ANHE *heap, int N, int k)
830	{	926	{
831	ANHE he = heap [k];	927	ANHE he = heap [k];
832	ANHE *E = heap + N + HEAP0;	928	ANHE *E = heap + N + HEAP0;
833		929
…		…
873	#define HEAP0 1	969	#define HEAP0 1
874	#define HPARENT(k) ((k) >> 1)	970	#define HPARENT(k) ((k) >> 1)
875	#define UPHEAP_DONE(p,k) (!(p))	971	#define UPHEAP_DONE(p,k) (!(p))
876		972
877	/* away from the root */	973	/* away from the root */
878	void inline_speed	974	inline_speed void
879	downheap (ANHE *heap, int N, int k)	975	downheap (ANHE *heap, int N, int k)
880	{	976	{
881	ANHE he = heap [k];	977	ANHE he = heap [k];
882		978
883	for (;;)	979	for (;;)
…		…
903	ev_active (ANHE_w (he)) = k;	999	ev_active (ANHE_w (he)) = k;
904	}	1000	}
905	#endif	1001	#endif
906		1002
907	/* towards the root */	1003	/* towards the root */
908	void inline_speed	1004	inline_speed void
909	upheap (ANHE *heap, int k)	1005	upheap (ANHE *heap, int k)
910	{	1006	{
911	ANHE he = heap [k];	1007	ANHE he = heap [k];
912		1008
913	for (;;)	1009	for (;;)
…		…
924		1020
925	heap [k] = he;	1021	heap [k] = he;
926	ev_active (ANHE_w (he)) = k;	1022	ev_active (ANHE_w (he)) = k;
927	}	1023	}
928		1024
929	void inline_size	1025	/* move an element suitably so it is in a correct place */
		1026	inline_size void
930	adjustheap (ANHE *heap, int N, int k)	1027	adjustheap (ANHE *heap, int N, int k)
931	{	1028	{
932	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1029	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
933	upheap (heap, k);	1030	upheap (heap, k);
934	else	1031	else
935	downheap (heap, N, k);	1032	downheap (heap, N, k);
936	}	1033	}
937		1034
938	/* rebuild the heap: this function is used only once and executed rarely */	1035	/* rebuild the heap: this function is used only once and executed rarely */
939	void inline_size	1036	inline_size void
940	reheap (ANHE *heap, int N)	1037	reheap (ANHE *heap, int N)
941	{	1038	{
942	int i;	1039	int i;
		1040
943	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */	1041	/* 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 */	1042	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
945	for (i = 0; i < N; ++i)	1043	for (i = 0; i < N; ++i)
946	upheap (heap, i + HEAP0);	1044	upheap (heap, i + HEAP0);
947	}	1045	}
948		1046
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	/*****************************************************************************/	1047	/*****************************************************************************/
965		1048
		1049	/* associate signal watchers to a signal signal */
966	typedef struct	1050	typedef struct
967	{	1051	{
968	WL head;	1052	WL head;
969	EV_ATOMIC_T gotsig;	1053	EV_ATOMIC_T gotsig;
970	} ANSIG;	1054	} ANSIG;
…		…
972	static ANSIG *signals;	1056	static ANSIG *signals;
973	static int signalmax;	1057	static int signalmax;
974		1058
975	static EV_ATOMIC_T gotsig;	1059	static EV_ATOMIC_T gotsig;
976		1060
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	/*****************************************************************************/	1061	/*****************************************************************************/
990		1062
991	void inline_speed	1063	/* used to prepare libev internal fd's */
		1064	/* this is not fork-safe */
		1065	inline_speed void
992	fd_intern (int fd)	1066	fd_intern (int fd)
993	{	1067	{
994	#ifdef _WIN32	1068	#ifdef _WIN32
995	int arg = 1;	1069	unsigned long arg = 1;
996	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1070	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
997	#else	1071	#else
998	fcntl (fd, F_SETFD, FD_CLOEXEC);	1072	fcntl (fd, F_SETFD, FD_CLOEXEC);
999	fcntl (fd, F_SETFL, O_NONBLOCK);	1073	fcntl (fd, F_SETFL, O_NONBLOCK);
1000	#endif	1074	#endif
1001	}	1075	}
1002		1076
1003	static void noinline	1077	static void noinline
1004	evpipe_init (EV_P)	1078	evpipe_init (EV_P)
1005	{	1079	{
1006	if (!ev_is_active (&pipeev))	1080	if (!ev_is_active (&pipe_w))
1007	{	1081	{
1008	#if EV_USE_EVENTFD	1082	#if EV_USE_EVENTFD
1009	if ((evfd = eventfd (0, 0)) >= 0)	1083	if ((evfd = eventfd (0, 0)) >= 0)
1010	{	1084	{
1011	evpipe [0] = -1;	1085	evpipe [0] = -1;
1012	fd_intern (evfd);	1086	fd_intern (evfd);
1013	ev_io_set (&pipeev, evfd, EV_READ);	1087	ev_io_set (&pipe_w, evfd, EV_READ);
1014	}	1088	}
1015	else	1089	else
1016	#endif	1090	#endif
1017	{	1091	{
1018	while (pipe (evpipe))	1092	while (pipe (evpipe))
1019	syserr ("(libev) error creating signal/async pipe");	1093	ev_syserr ("(libev) error creating signal/async pipe");
1020		1094
1021	fd_intern (evpipe [0]);	1095	fd_intern (evpipe [0]);
1022	fd_intern (evpipe [1]);	1096	fd_intern (evpipe [1]);
1023	ev_io_set (&pipeev, evpipe [0], EV_READ);	1097	ev_io_set (&pipe_w, evpipe [0], EV_READ);
1024	}	1098	}
1025		1099
1026	ev_io_start (EV_A_ &pipeev);	1100	ev_io_start (EV_A_ &pipe_w);
1027	ev_unref (EV_A); /* watcher should not keep loop alive */	1101	ev_unref (EV_A); /* watcher should not keep loop alive */
1028	}	1102	}
1029	}	1103	}
1030		1104
1031	void inline_size	1105	inline_size void
1032	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1106	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1033	{	1107	{
1034	if (!*flag)	1108	if (!*flag)
1035	{	1109	{
1036	int old_errno = errno; /* save errno because write might clobber it */	1110	int old_errno = errno; /* save errno because write might clobber it */
…		…
1049		1123
1050	errno = old_errno;	1124	errno = old_errno;
1051	}	1125	}
1052	}	1126	}
1053		1127
		1128	/* called whenever the libev signal pipe */
		1129	/* got some events (signal, async) */
1054	static void	1130	static void
1055	pipecb (EV_P_ ev_io *iow, int revents)	1131	pipecb (EV_P_ ev_io *iow, int revents)
1056	{	1132	{
1057	#if EV_USE_EVENTFD	1133	#if EV_USE_EVENTFD
1058	if (evfd >= 0)	1134	if (evfd >= 0)
…		…
1114	ev_feed_signal_event (EV_P_ int signum)	1190	ev_feed_signal_event (EV_P_ int signum)
1115	{	1191	{
1116	WL w;	1192	WL w;
1117		1193
1118	#if EV_MULTIPLICITY	1194	#if EV_MULTIPLICITY
1119	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1195	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1120	#endif	1196	#endif
1121		1197
1122	--signum;	1198	--signum;
1123		1199
1124	if (signum < 0 || signum >= signalmax)	1200	if (signum < 0 || signum >= signalmax)
…		…
1140		1216
1141	#ifndef WIFCONTINUED	1217	#ifndef WIFCONTINUED
1142	# define WIFCONTINUED(status) 0	1218	# define WIFCONTINUED(status) 0
1143	#endif	1219	#endif
1144		1220
1145	void inline_speed	1221	/* handle a single child status event */
		1222	inline_speed void
1146	child_reap (EV_P_ int chain, int pid, int status)	1223	child_reap (EV_P_ int chain, int pid, int status)
1147	{	1224	{
1148	ev_child *w;	1225	ev_child *w;
1149	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1226	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1150		1227
…		…
1163		1240
1164	#ifndef WCONTINUED	1241	#ifndef WCONTINUED
1165	# define WCONTINUED 0	1242	# define WCONTINUED 0
1166	#endif	1243	#endif
1167		1244
		1245	/* called on sigchld etc., calls waitpid */
1168	static void	1246	static void
1169	childcb (EV_P_ ev_signal *sw, int revents)	1247	childcb (EV_P_ ev_signal *sw, int revents)
1170	{	1248	{
1171	int pid, status;	1249	int pid, status;
1172		1250
…		…
1253	/* kqueue is borked on everything but netbsd apparently */	1331	/* kqueue is borked on everything but netbsd apparently */
1254	/* it usually doesn't work correctly on anything but sockets and pipes */	1332	/* it usually doesn't work correctly on anything but sockets and pipes */
1255	flags &= ~EVBACKEND_KQUEUE;	1333	flags &= ~EVBACKEND_KQUEUE;
1256	#endif	1334	#endif
1257	#ifdef __APPLE__	1335	#ifdef __APPLE__
1258	// flags &= ~EVBACKEND_KQUEUE; for documentation	1336	/* only select works correctly on that "unix-certified" platform */
1259	flags &= ~EVBACKEND_POLL;	1337	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1338	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1260	#endif	1339	#endif
1261		1340
1262	return flags;	1341	return flags;
1263	}	1342	}
1264		1343
…		…
1284	ev_loop_count (EV_P)	1363	ev_loop_count (EV_P)
1285	{	1364	{
1286	return loop_count;	1365	return loop_count;
1287	}	1366	}
1288		1367
		1368	unsigned int
		1369	ev_loop_depth (EV_P)
		1370	{
		1371	return loop_depth;
		1372	}
		1373
1289	void	1374	void
1290	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1375	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1291	{	1376	{
1292	io_blocktime = interval;	1377	io_blocktime = interval;
1293	}	1378	}
…		…
1296	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1381	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1297	{	1382	{
1298	timeout_blocktime = interval;	1383	timeout_blocktime = interval;
1299	}	1384	}
1300		1385
		1386	/* initialise a loop structure, must be zero-initialised */
1301	static void noinline	1387	static void noinline
1302	loop_init (EV_P_ unsigned int flags)	1388	loop_init (EV_P_ unsigned int flags)
1303	{	1389	{
1304	if (!backend)	1390	if (!backend)
1305	{	1391	{
		1392	#if EV_USE_REALTIME
		1393	if (!have_realtime)
		1394	{
		1395	struct timespec ts;
		1396
		1397	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1398	have_realtime = 1;
		1399	}
		1400	#endif
		1401
1306	#if EV_USE_MONOTONIC	1402	#if EV_USE_MONOTONIC
		1403	if (!have_monotonic)
1307	{	1404	{
1308	struct timespec ts;	1405	struct timespec ts;
		1406
1309	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1407	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1310	have_monotonic = 1;	1408	have_monotonic = 1;
1311	}	1409	}
1312	#endif	1410	#endif
1313		1411
1314	ev_rt_now = ev_time ();	1412	ev_rt_now = ev_time ();
1315	mn_now = get_clock ();	1413	mn_now = get_clock ();
1316	now_floor = mn_now;	1414	now_floor = mn_now;
…		…
1353	#endif	1451	#endif
1354	#if EV_USE_SELECT	1452	#if EV_USE_SELECT
1355	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1453	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1356	#endif	1454	#endif
1357		1455
		1456	ev_prepare_init (&pending_w, pendingcb);
		1457
1358	ev_init (&pipeev, pipecb);	1458	ev_init (&pipe_w, pipecb);
1359	ev_set_priority (&pipeev, EV_MAXPRI);	1459	ev_set_priority (&pipe_w, EV_MAXPRI);
1360	}	1460	}
1361	}	1461	}
1362		1462
		1463	/* free up a loop structure */
1363	static void noinline	1464	static void noinline
1364	loop_destroy (EV_P)	1465	loop_destroy (EV_P)
1365	{	1466	{
1366	int i;	1467	int i;
1367		1468
1368	if (ev_is_active (&pipeev))	1469	if (ev_is_active (&pipe_w))
1369	{	1470	{
1370	ev_ref (EV_A); /* signal watcher */	1471	ev_ref (EV_A); /* signal watcher */
1371	ev_io_stop (EV_A_ &pipeev);	1472	ev_io_stop (EV_A_ &pipe_w);
1372		1473
1373	#if EV_USE_EVENTFD	1474	#if EV_USE_EVENTFD
1374	if (evfd >= 0)	1475	if (evfd >= 0)
1375	close (evfd);	1476	close (evfd);
1376	#endif	1477	#endif
…		…
1415	}	1516	}
1416		1517
1417	ev_free (anfds); anfdmax = 0;	1518	ev_free (anfds); anfdmax = 0;
1418		1519
1419	/* have to use the microsoft-never-gets-it-right macro */	1520	/* have to use the microsoft-never-gets-it-right macro */
		1521	array_free (rfeed, EMPTY);
1420	array_free (fdchange, EMPTY);	1522	array_free (fdchange, EMPTY);
1421	array_free (timer, EMPTY);	1523	array_free (timer, EMPTY);
1422	#if EV_PERIODIC_ENABLE	1524	#if EV_PERIODIC_ENABLE
1423	array_free (periodic, EMPTY);	1525	array_free (periodic, EMPTY);
1424	#endif	1526	#endif
…		…
1433		1535
1434	backend = 0;	1536	backend = 0;
1435	}	1537	}
1436		1538
1437	#if EV_USE_INOTIFY	1539	#if EV_USE_INOTIFY
1438	void inline_size infy_fork (EV_P);	1540	inline_size void infy_fork (EV_P);
1439	#endif	1541	#endif
1440		1542
1441	void inline_size	1543	inline_size void
1442	loop_fork (EV_P)	1544	loop_fork (EV_P)
1443	{	1545	{
1444	#if EV_USE_PORT	1546	#if EV_USE_PORT
1445	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1547	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1446	#endif	1548	#endif
…		…
1452	#endif	1554	#endif
1453	#if EV_USE_INOTIFY	1555	#if EV_USE_INOTIFY
1454	infy_fork (EV_A);	1556	infy_fork (EV_A);
1455	#endif	1557	#endif
1456		1558
1457	if (ev_is_active (&pipeev))	1559	if (ev_is_active (&pipe_w))
1458	{	1560	{
1459	/* this "locks" the handlers against writing to the pipe */	1561	/* this "locks" the handlers against writing to the pipe */
1460	/* while we modify the fd vars */	1562	/* while we modify the fd vars */
1461	gotsig = 1;	1563	gotsig = 1;
1462	#if EV_ASYNC_ENABLE	1564	#if EV_ASYNC_ENABLE
1463	gotasync = 1;	1565	gotasync = 1;
1464	#endif	1566	#endif
1465		1567
1466	ev_ref (EV_A);	1568	ev_ref (EV_A);
1467	ev_io_stop (EV_A_ &pipeev);	1569	ev_io_stop (EV_A_ &pipe_w);
1468		1570
1469	#if EV_USE_EVENTFD	1571	#if EV_USE_EVENTFD
1470	if (evfd >= 0)	1572	if (evfd >= 0)
1471	close (evfd);	1573	close (evfd);
1472	#endif	1574	#endif
…		…
1477	close (evpipe [1]);	1579	close (evpipe [1]);
1478	}	1580	}
1479		1581
1480	evpipe_init (EV_A);	1582	evpipe_init (EV_A);
1481	/* now iterate over everything, in case we missed something */	1583	/* now iterate over everything, in case we missed something */
1482	pipecb (EV_A_ &pipeev, EV_READ);	1584	pipecb (EV_A_ &pipe_w, EV_READ);
1483	}	1585	}
1484		1586
1485	postfork = 0;	1587	postfork = 0;
1486	}	1588	}
1487		1589
1488	#if EV_MULTIPLICITY	1590	#if EV_MULTIPLICITY
		1591
1489	struct ev_loop *	1592	struct ev_loop *
1490	ev_loop_new (unsigned int flags)	1593	ev_loop_new (unsigned int flags)
1491	{	1594	{
1492	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1595	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1493		1596
…		…
1513	{	1616	{
1514	postfork = 1; /* must be in line with ev_default_fork */	1617	postfork = 1; /* must be in line with ev_default_fork */
1515	}	1618	}
1516		1619
1517	#if EV_VERIFY	1620	#if EV_VERIFY
1518	static void	1621	static void noinline
		1622	verify_watcher (EV_P_ W w)
		1623	{
		1624	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1625
		1626	if (w->pending)
		1627	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1628	}
		1629
		1630	static void noinline
		1631	verify_heap (EV_P_ ANHE *heap, int N)
		1632	{
		1633	int i;
		1634
		1635	for (i = HEAP0; i < N + HEAP0; ++i)
		1636	{
		1637	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1638	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1639	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1640
		1641	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1642	}
		1643	}
		1644
		1645	static void noinline
1519	array_check (W **ws, int cnt)	1646	array_verify (EV_P_ W *ws, int cnt)
1520	{	1647	{
1521	while (cnt--)	1648	while (cnt--)
		1649	{
1522	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));	1650	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1651	verify_watcher (EV_A_ ws [cnt]);
		1652	}
1523	}	1653	}
		1654	#endif
1524		1655
1525	static void	1656	void
1526	ev_loop_verify (EV_P)	1657	ev_loop_verify (EV_P)
1527	{	1658	{
		1659	#if EV_VERIFY
1528	int i;	1660	int i;
		1661	WL w;
1529		1662
		1663	assert (activecnt >= -1);
		1664
		1665	assert (fdchangemax >= fdchangecnt);
		1666	for (i = 0; i < fdchangecnt; ++i)
		1667	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1668
		1669	assert (anfdmax >= 0);
		1670	for (i = 0; i < anfdmax; ++i)
		1671	for (w = anfds [i].head; w; w = w->next)
		1672	{
		1673	verify_watcher (EV_A_ (W)w);
		1674	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1675	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1676	}
		1677
		1678	assert (timermax >= timercnt);
1530	checkheap (timers, timercnt);	1679	verify_heap (EV_A_ timers, timercnt);
		1680
1531	#if EV_PERIODIC_ENABLE	1681	#if EV_PERIODIC_ENABLE
		1682	assert (periodicmax >= periodiccnt);
1532	checkheap (periodics, periodiccnt);	1683	verify_heap (EV_A_ periodics, periodiccnt);
1533	#endif	1684	#endif
1534		1685
		1686	for (i = NUMPRI; i--; )
		1687	{
		1688	assert (pendingmax [i] >= pendingcnt [i]);
1535	#if EV_IDLE_ENABLE	1689	#if EV_IDLE_ENABLE
1536	for (i = NUMPRI; i--; )	1690	assert (idleall >= 0);
		1691	assert (idlemax [i] >= idlecnt [i]);
1537	array_check ((W **)idles [i], idlecnt [i]);	1692	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1538	#endif	1693	#endif
		1694	}
		1695
1539	#if EV_FORK_ENABLE	1696	#if EV_FORK_ENABLE
		1697	assert (forkmax >= forkcnt);
1540	array_check ((W **)forks, forkcnt);	1698	array_verify (EV_A_ (W *)forks, forkcnt);
1541	#endif	1699	#endif
1542	array_check ((W **)prepares, preparecnt);	1700
1543	array_check ((W **)checks, checkcnt);
1544	#if EV_ASYNC_ENABLE	1701	#if EV_ASYNC_ENABLE
		1702	assert (asyncmax >= asynccnt);
1545	array_check ((W **)asyncs, asynccnt);	1703	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1704	#endif
		1705
		1706	assert (preparemax >= preparecnt);
		1707	array_verify (EV_A_ (W *)prepares, preparecnt);
		1708
		1709	assert (checkmax >= checkcnt);
		1710	array_verify (EV_A_ (W *)checks, checkcnt);
		1711
		1712	# if 0
		1713	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1714	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1546	#endif	1715	# endif
1547	}
1548	#endif	1716	#endif
		1717	}
1549		1718
1550	#endif	1719	#endif /* multiplicity */
1551		1720
1552	#if EV_MULTIPLICITY	1721	#if EV_MULTIPLICITY
1553	struct ev_loop *	1722	struct ev_loop *
1554	ev_default_loop_init (unsigned int flags)	1723	ev_default_loop_init (unsigned int flags)
1555	#else	1724	#else
…		…
1588	{	1757	{
1589	#if EV_MULTIPLICITY	1758	#if EV_MULTIPLICITY
1590	struct ev_loop *loop = ev_default_loop_ptr;	1759	struct ev_loop *loop = ev_default_loop_ptr;
1591	#endif	1760	#endif
1592		1761
		1762	ev_default_loop_ptr = 0;
		1763
1593	#ifndef _WIN32	1764	#ifndef _WIN32
1594	ev_ref (EV_A); /* child watcher */	1765	ev_ref (EV_A); /* child watcher */
1595	ev_signal_stop (EV_A_ &childev);	1766	ev_signal_stop (EV_A_ &childev);
1596	#endif	1767	#endif
1597		1768
…		…
1603	{	1774	{
1604	#if EV_MULTIPLICITY	1775	#if EV_MULTIPLICITY
1605	struct ev_loop *loop = ev_default_loop_ptr;	1776	struct ev_loop *loop = ev_default_loop_ptr;
1606	#endif	1777	#endif
1607		1778
1608	if (backend)
1609	postfork = 1; /* must be in line with ev_loop_fork */	1779	postfork = 1; /* must be in line with ev_loop_fork */
1610	}	1780	}
1611		1781
1612	/*****************************************************************************/	1782	/*****************************************************************************/
1613		1783
1614	void	1784	void
1615	ev_invoke (EV_P_ void *w, int revents)	1785	ev_invoke (EV_P_ void *w, int revents)
1616	{	1786	{
1617	EV_CB_INVOKE ((W)w, revents);	1787	EV_CB_INVOKE ((W)w, revents);
1618	}	1788	}
1619		1789
1620	void inline_speed	1790	inline_speed void
1621	call_pending (EV_P)	1791	call_pending (EV_P)
1622	{	1792	{
1623	int pri;	1793	int pri;
1624
1625	EV_FREQUENT_CHECK;
1626		1794
1627	for (pri = NUMPRI; pri--; )	1795	for (pri = NUMPRI; pri--; )
1628	while (pendingcnt [pri])	1796	while (pendingcnt [pri])
1629	{	1797	{
1630	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1798	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1631		1799
1632	if (expect_true (p->w))
1633	{
1634	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1800	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1801	/* ^ this is no longer true, as pending_w could be here */
1635		1802
1636	p->w->pending = 0;	1803	p->w->pending = 0;
1637	EV_CB_INVOKE (p->w, p->events);	1804	EV_CB_INVOKE (p->w, p->events);
1638	}	1805	EV_FREQUENT_CHECK;
1639	}	1806	}
1640
1641	EV_FREQUENT_CHECK;
1642	}	1807	}
1643		1808
1644	#if EV_IDLE_ENABLE	1809	#if EV_IDLE_ENABLE
1645	void inline_size	1810	/* make idle watchers pending. this handles the "call-idle */
		1811	/* only when higher priorities are idle" logic */
		1812	inline_size void
1646	idle_reify (EV_P)	1813	idle_reify (EV_P)
1647	{	1814	{
1648	if (expect_false (idleall))	1815	if (expect_false (idleall))
1649	{	1816	{
1650	int pri;	1817	int pri;
…		…
1662	}	1829	}
1663	}	1830	}
1664	}	1831	}
1665	#endif	1832	#endif
1666		1833
1667	void inline_size	1834	/* make timers pending */
		1835	inline_size void
1668	timers_reify (EV_P)	1836	timers_reify (EV_P)
1669	{	1837	{
1670	EV_FREQUENT_CHECK;	1838	EV_FREQUENT_CHECK;
1671		1839
1672	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	1840	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1673	{	1841	{
1674	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	1842	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	{	1843	{
		1844	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1845
		1846	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		1847
		1848	/* first reschedule or stop timer */
		1849	if (w->repeat)
		1850	{
1681	ev_at (w) += w->repeat;	1851	ev_at (w) += w->repeat;
1682	if (ev_at (w) < mn_now)	1852	if (ev_at (w) < mn_now)
1683	ev_at (w) = mn_now;	1853	ev_at (w) = mn_now;
1684		1854
1685	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1855	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1686		1856
1687	ANHE_at_cache (timers [HEAP0]);	1857	ANHE_at_cache (timers [HEAP0]);
1688	downheap (timers, timercnt, HEAP0);	1858	downheap (timers, timercnt, HEAP0);
		1859	}
		1860	else
		1861	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1862
		1863	EV_FREQUENT_CHECK;
		1864	feed_reverse (EV_A_ (W)w);
1689	}	1865	}
1690	else	1866	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1691	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1692		1867
1693	EV_FREQUENT_CHECK;
1694	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1868	feed_reverse_done (EV_A_ EV_TIMEOUT);
1695	}	1869	}
1696	}	1870	}
1697		1871
1698	#if EV_PERIODIC_ENABLE	1872	#if EV_PERIODIC_ENABLE
1699	void inline_size	1873	/* make periodics pending */
		1874	inline_size void
1700	periodics_reify (EV_P)	1875	periodics_reify (EV_P)
1701	{	1876	{
1702	EV_FREQUENT_CHECK;	1877	EV_FREQUENT_CHECK;
		1878
1703	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	1879	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1704	{	1880	{
1705	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	1881	int feed_count = 0;
1706		1882
1707	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	1883	do
1708
1709	/* first reschedule or stop timer */
1710	if (w->reschedule_cb)
1711	{	1884	{
		1885	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1886
		1887	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		1888
		1889	/* first reschedule or stop timer */
		1890	if (w->reschedule_cb)
		1891	{
1712	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1892	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1713		1893
1714	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));	1894	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1715		1895
1716	ANHE_at_cache (periodics [HEAP0]);	1896	ANHE_at_cache (periodics [HEAP0]);
1717	downheap (periodics, periodiccnt, HEAP0);	1897	downheap (periodics, periodiccnt, HEAP0);
		1898	}
		1899	else if (w->interval)
		1900	{
		1901	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1902	/* if next trigger time is not sufficiently in the future, put it there */
		1903	/* this might happen because of floating point inexactness */
		1904	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1905	{
		1906	ev_at (w) += w->interval;
		1907
		1908	/* if interval is unreasonably low we might still have a time in the past */
		1909	/* so correct this. this will make the periodic very inexact, but the user */
		1910	/* has effectively asked to get triggered more often than possible */
		1911	if (ev_at (w) < ev_rt_now)
		1912	ev_at (w) = ev_rt_now;
		1913	}
		1914
		1915	ANHE_at_cache (periodics [HEAP0]);
		1916	downheap (periodics, periodiccnt, HEAP0);
		1917	}
		1918	else
		1919	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1920
1718	EV_FREQUENT_CHECK;	1921	EV_FREQUENT_CHECK;
		1922	feed_reverse (EV_A_ (W)w);
1719	}	1923	}
1720	else if (w->interval)	1924	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		1925
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);	1926	feed_reverse_done (EV_A_ EV_PERIODIC);
1744	}	1927	}
1745	}	1928	}
1746		1929
		1930	/* simply recalculate all periodics */
		1931	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1747	static void noinline	1932	static void noinline
1748	periodics_reschedule (EV_P)	1933	periodics_reschedule (EV_P)
1749	{	1934	{
1750	int i;	1935	int i;
1751		1936
…		…
1764		1949
1765	reheap (periodics, periodiccnt);	1950	reheap (periodics, periodiccnt);
1766	}	1951	}
1767	#endif	1952	#endif
1768		1953
1769	void inline_speed	1954	/* adjust all timers by a given offset */
		1955	static void noinline
		1956	timers_reschedule (EV_P_ ev_tstamp adjust)
		1957	{
		1958	int i;
		1959
		1960	for (i = 0; i < timercnt; ++i)
		1961	{
		1962	ANHE *he = timers + i + HEAP0;
		1963	ANHE_w (*he)->at += adjust;
		1964	ANHE_at_cache (*he);
		1965	}
		1966	}
		1967
		1968	/* fetch new monotonic and realtime times from the kernel */
		1969	/* also detetc if there was a timejump, and act accordingly */
		1970	inline_speed void
1770	time_update (EV_P_ ev_tstamp max_block)	1971	time_update (EV_P_ ev_tstamp max_block)
1771	{	1972	{
1772	int i;
1773
1774	#if EV_USE_MONOTONIC	1973	#if EV_USE_MONOTONIC
1775	if (expect_true (have_monotonic))	1974	if (expect_true (have_monotonic))
1776	{	1975	{
		1976	int i;
1777	ev_tstamp odiff = rtmn_diff;	1977	ev_tstamp odiff = rtmn_diff;
1778		1978
1779	mn_now = get_clock ();	1979	mn_now = get_clock ();
1780		1980
1781	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	1981	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1807	ev_rt_now = ev_time ();	2007	ev_rt_now = ev_time ();
1808	mn_now = get_clock ();	2008	mn_now = get_clock ();
1809	now_floor = mn_now;	2009	now_floor = mn_now;
1810	}	2010	}
1811		2011
		2012	/* no timer adjustment, as the monotonic clock doesn't jump */
		2013	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1812	# if EV_PERIODIC_ENABLE	2014	# if EV_PERIODIC_ENABLE
1813	periodics_reschedule (EV_A);	2015	periodics_reschedule (EV_A);
1814	# endif	2016	# endif
1815	/* no timer adjustment, as the monotonic clock doesn't jump */
1816	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1817	}	2017	}
1818	else	2018	else
1819	#endif	2019	#endif
1820	{	2020	{
1821	ev_rt_now = ev_time ();	2021	ev_rt_now = ev_time ();
1822		2022
1823	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2023	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1824	{	2024	{
		2025	/* adjust timers. this is easy, as the offset is the same for all of them */
		2026	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1825	#if EV_PERIODIC_ENABLE	2027	#if EV_PERIODIC_ENABLE
1826	periodics_reschedule (EV_A);	2028	periodics_reschedule (EV_A);
1827	#endif	2029	#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	}	2030	}
1836		2031
1837	mn_now = ev_rt_now;	2032	mn_now = ev_rt_now;
1838	}	2033	}
1839	}	2034	}
1840		2035
1841	void	2036	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)	2037	ev_loop (EV_P_ int flags)
1857	{	2038	{
		2039	++loop_depth;
		2040
1858	loop_done = EVUNLOOP_CANCEL;	2041	loop_done = EVUNLOOP_CANCEL;
1859		2042
1860	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2043	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1861		2044
1862	do	2045	do
1863	{	2046	{
		2047	#if EV_VERIFY >= 2
		2048	ev_loop_verify (EV_A);
		2049	#endif
		2050
1864	#ifndef _WIN32	2051	#ifndef _WIN32
1865	if (expect_false (curpid)) /* penalise the forking check even more */	2052	if (expect_false (curpid)) /* penalise the forking check even more */
1866	if (expect_false (getpid () != curpid))	2053	if (expect_false (getpid () != curpid))
1867	{	2054	{
1868	curpid = getpid ();	2055	curpid = getpid ();
…		…
1885	{	2072	{
1886	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2073	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1887	call_pending (EV_A);	2074	call_pending (EV_A);
1888	}	2075	}
1889		2076
1890	if (expect_false (!activecnt))
1891	break;
1892
1893	/* we might have forked, so reify kernel state if necessary */	2077	/* we might have forked, so reify kernel state if necessary */
1894	if (expect_false (postfork))	2078	if (expect_false (postfork))
1895	loop_fork (EV_A);	2079	loop_fork (EV_A);
1896		2080
1897	/* update fd-related kernel structures */	2081	/* update fd-related kernel structures */
…		…
1902	ev_tstamp waittime = 0.;	2086	ev_tstamp waittime = 0.;
1903	ev_tstamp sleeptime = 0.;	2087	ev_tstamp sleeptime = 0.;
1904		2088
1905	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2089	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1906	{	2090	{
		2091	/* remember old timestamp for io_blocktime calculation */
		2092	ev_tstamp prev_mn_now = mn_now;
		2093
1907	/* update time to cancel out callback processing overhead */	2094	/* update time to cancel out callback processing overhead */
1908	time_update (EV_A_ 1e100);	2095	time_update (EV_A_ 1e100);
1909		2096
1910	waittime = MAX_BLOCKTIME;	2097	waittime = MAX_BLOCKTIME;
1911		2098
…		…
1921	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2108	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1922	if (waittime > to) waittime = to;	2109	if (waittime > to) waittime = to;
1923	}	2110	}
1924	#endif	2111	#endif
1925		2112
		2113	/* don't let timeouts decrease the waittime below timeout_blocktime */
1926	if (expect_false (waittime < timeout_blocktime))	2114	if (expect_false (waittime < timeout_blocktime))
1927	waittime = timeout_blocktime;	2115	waittime = timeout_blocktime;
1928		2116
1929	sleeptime = waittime - backend_fudge;	2117	/* extra check because io_blocktime is commonly 0 */
1930
1931	if (expect_true (sleeptime > io_blocktime))	2118	if (expect_false (io_blocktime))
1932	sleeptime = io_blocktime;
1933
1934	if (sleeptime)
1935	{	2119	{
		2120	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2121
		2122	if (sleeptime > waittime - backend_fudge)
		2123	sleeptime = waittime - backend_fudge;
		2124
		2125	if (expect_true (sleeptime > 0.))
		2126	{
1936	ev_sleep (sleeptime);	2127	ev_sleep (sleeptime);
1937	waittime -= sleeptime;	2128	waittime -= sleeptime;
		2129	}
1938	}	2130	}
1939	}	2131	}
1940		2132
1941	++loop_count;	2133	++loop_count;
1942	backend_poll (EV_A_ waittime);	2134	backend_poll (EV_A_ waittime);
…		…
1968	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2160	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1969	));	2161	));
1970		2162
1971	if (loop_done == EVUNLOOP_ONE)	2163	if (loop_done == EVUNLOOP_ONE)
1972	loop_done = EVUNLOOP_CANCEL;	2164	loop_done = EVUNLOOP_CANCEL;
		2165
		2166	--loop_depth;
1973	}	2167	}
1974		2168
1975	void	2169	void
1976	ev_unloop (EV_P_ int how)	2170	ev_unloop (EV_P_ int how)
1977	{	2171	{
1978	loop_done = how;	2172	loop_done = how;
1979	}	2173	}
1980		2174
		2175	void
		2176	ev_ref (EV_P)
		2177	{
		2178	++activecnt;
		2179	}
		2180
		2181	void
		2182	ev_unref (EV_P)
		2183	{
		2184	--activecnt;
		2185	}
		2186
		2187	void
		2188	ev_now_update (EV_P)
		2189	{
		2190	time_update (EV_A_ 1e100);
		2191	}
		2192
		2193	void
		2194	ev_suspend (EV_P)
		2195	{
		2196	ev_now_update (EV_A);
		2197	}
		2198
		2199	void
		2200	ev_resume (EV_P)
		2201	{
		2202	ev_tstamp mn_prev = mn_now;
		2203
		2204	ev_now_update (EV_A);
		2205	timers_reschedule (EV_A_ mn_now - mn_prev);
		2206	#if EV_PERIODIC_ENABLE
		2207	/* TODO: really do this? */
		2208	periodics_reschedule (EV_A);
		2209	#endif
		2210	}
		2211
1981	/*****************************************************************************/	2212	/*****************************************************************************/
		2213	/* singly-linked list management, used when the expected list length is short */
1982		2214
1983	void inline_size	2215	inline_size void
1984	wlist_add (WL *head, WL elem)	2216	wlist_add (WL *head, WL elem)
1985	{	2217	{
1986	elem->next = *head;	2218	elem->next = *head;
1987	*head = elem;	2219	*head = elem;
1988	}	2220	}
1989		2221
1990	void inline_size	2222	inline_size void
1991	wlist_del (WL *head, WL elem)	2223	wlist_del (WL *head, WL elem)
1992	{	2224	{
1993	while (*head)	2225	while (*head)
1994	{	2226	{
1995	if (*head == elem)	2227	if (*head == elem)
…		…
2000		2232
2001	head = &(*head)->next;	2233	head = &(*head)->next;
2002	}	2234	}
2003	}	2235	}
2004		2236
2005	void inline_speed	2237	/* internal, faster, version of ev_clear_pending */
		2238	inline_speed void
2006	clear_pending (EV_P_ W w)	2239	clear_pending (EV_P_ W w)
2007	{	2240	{
2008	if (w->pending)	2241	if (w->pending)
2009	{	2242	{
2010	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2243	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2011	w->pending = 0;	2244	w->pending = 0;
2012	}	2245	}
2013	}	2246	}
2014		2247
2015	int	2248	int
…		…
2019	int pending = w_->pending;	2252	int pending = w_->pending;
2020		2253
2021	if (expect_true (pending))	2254	if (expect_true (pending))
2022	{	2255	{
2023	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2256	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2257	p->w = (W)&pending_w;
2024	w_->pending = 0;	2258	w_->pending = 0;
2025	p->w = 0;
2026	return p->events;	2259	return p->events;
2027	}	2260	}
2028	else	2261	else
2029	return 0;	2262	return 0;
2030	}	2263	}
2031		2264
2032	void inline_size	2265	inline_size void
2033	pri_adjust (EV_P_ W w)	2266	pri_adjust (EV_P_ W w)
2034	{	2267	{
2035	int pri = w->priority;	2268	int pri = ev_priority (w);
2036	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2269	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2037	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2270	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2038	w->priority = pri;	2271	ev_set_priority (w, pri);
2039	}	2272	}
2040		2273
2041	void inline_speed	2274	inline_speed void
2042	ev_start (EV_P_ W w, int active)	2275	ev_start (EV_P_ W w, int active)
2043	{	2276	{
2044	pri_adjust (EV_A_ w);	2277	pri_adjust (EV_A_ w);
2045	w->active = active;	2278	w->active = active;
2046	ev_ref (EV_A);	2279	ev_ref (EV_A);
2047	}	2280	}
2048		2281
2049	void inline_size	2282	inline_size void
2050	ev_stop (EV_P_ W w)	2283	ev_stop (EV_P_ W w)
2051	{	2284	{
2052	ev_unref (EV_A);	2285	ev_unref (EV_A);
2053	w->active = 0;	2286	w->active = 0;
2054	}	2287	}
…		…
2061	int fd = w->fd;	2294	int fd = w->fd;
2062		2295
2063	if (expect_false (ev_is_active (w)))	2296	if (expect_false (ev_is_active (w)))
2064	return;	2297	return;
2065		2298
2066	assert (("ev_io_start called with negative fd", fd >= 0));	2299	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2300	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2067		2301
2068	EV_FREQUENT_CHECK;	2302	EV_FREQUENT_CHECK;
2069		2303
2070	ev_start (EV_A_ (W)w, 1);	2304	ev_start (EV_A_ (W)w, 1);
2071	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2305	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2072	wlist_add (&anfds[fd].head, (WL)w);	2306	wlist_add (&anfds[fd].head, (WL)w);
2073		2307
2074	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2308	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
2075	w->events &= ~EV_IOFDSET;	2309	w->events &= ~EV__IOFDSET;
2076		2310
2077	EV_FREQUENT_CHECK;	2311	EV_FREQUENT_CHECK;
2078	}	2312	}
2079		2313
2080	void noinline	2314	void noinline
…		…
2082	{	2316	{
2083	clear_pending (EV_A_ (W)w);	2317	clear_pending (EV_A_ (W)w);
2084	if (expect_false (!ev_is_active (w)))	2318	if (expect_false (!ev_is_active (w)))
2085	return;	2319	return;
2086		2320
2087	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2321	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2088		2322
2089	EV_FREQUENT_CHECK;	2323	EV_FREQUENT_CHECK;
2090		2324
2091	wlist_del (&anfds[w->fd].head, (WL)w);	2325	wlist_del (&anfds[w->fd].head, (WL)w);
2092	ev_stop (EV_A_ (W)w);	2326	ev_stop (EV_A_ (W)w);
…		…
2102	if (expect_false (ev_is_active (w)))	2336	if (expect_false (ev_is_active (w)))
2103	return;	2337	return;
2104		2338
2105	ev_at (w) += mn_now;	2339	ev_at (w) += mn_now;
2106		2340
2107	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2341	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2108		2342
2109	EV_FREQUENT_CHECK;	2343	EV_FREQUENT_CHECK;
2110		2344
2111	++timercnt;	2345	++timercnt;
2112	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);	2346	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
…		…
2115	ANHE_at_cache (timers [ev_active (w)]);	2349	ANHE_at_cache (timers [ev_active (w)]);
2116	upheap (timers, ev_active (w));	2350	upheap (timers, ev_active (w));
2117		2351
2118	EV_FREQUENT_CHECK;	2352	EV_FREQUENT_CHECK;
2119		2353
2120	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2354	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2121	}	2355	}
2122		2356
2123	void noinline	2357	void noinline
2124	ev_timer_stop (EV_P_ ev_timer *w)	2358	ev_timer_stop (EV_P_ ev_timer *w)
2125	{	2359	{
…		…
2130	EV_FREQUENT_CHECK;	2364	EV_FREQUENT_CHECK;
2131		2365
2132	{	2366	{
2133	int active = ev_active (w);	2367	int active = ev_active (w);
2134		2368
2135	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2369	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2136		2370
2137	--timercnt;	2371	--timercnt;
2138		2372
2139	if (expect_true (active < timercnt + HEAP0))	2373	if (expect_true (active < timercnt + HEAP0))
2140	{	2374	{
…		…
2184		2418
2185	if (w->reschedule_cb)	2419	if (w->reschedule_cb)
2186	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2420	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2187	else if (w->interval)	2421	else if (w->interval)
2188	{	2422	{
2189	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2423	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 */	2424	/* 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;	2425	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2192	}	2426	}
2193	else	2427	else
2194	ev_at (w) = w->offset;	2428	ev_at (w) = w->offset;
…		…
2202	ANHE_at_cache (periodics [ev_active (w)]);	2436	ANHE_at_cache (periodics [ev_active (w)]);
2203	upheap (periodics, ev_active (w));	2437	upheap (periodics, ev_active (w));
2204		2438
2205	EV_FREQUENT_CHECK;	2439	EV_FREQUENT_CHECK;
2206		2440
2207	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2441	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2208	}	2442	}
2209		2443
2210	void noinline	2444	void noinline
2211	ev_periodic_stop (EV_P_ ev_periodic *w)	2445	ev_periodic_stop (EV_P_ ev_periodic *w)
2212	{	2446	{
…		…
2217	EV_FREQUENT_CHECK;	2451	EV_FREQUENT_CHECK;
2218		2452
2219	{	2453	{
2220	int active = ev_active (w);	2454	int active = ev_active (w);
2221		2455
2222	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2456	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2223		2457
2224	--periodiccnt;	2458	--periodiccnt;
2225		2459
2226	if (expect_true (active < periodiccnt + HEAP0))	2460	if (expect_true (active < periodiccnt + HEAP0))
2227	{	2461	{
…		…
2250		2484
2251	void noinline	2485	void noinline
2252	ev_signal_start (EV_P_ ev_signal *w)	2486	ev_signal_start (EV_P_ ev_signal *w)
2253	{	2487	{
2254	#if EV_MULTIPLICITY	2488	#if EV_MULTIPLICITY
2255	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2489	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2256	#endif	2490	#endif
2257	if (expect_false (ev_is_active (w)))	2491	if (expect_false (ev_is_active (w)))
2258	return;	2492	return;
2259		2493
2260	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2494	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2261		2495
2262	evpipe_init (EV_A);	2496	evpipe_init (EV_A);
2263		2497
2264	EV_FREQUENT_CHECK;	2498	EV_FREQUENT_CHECK;
2265		2499
…		…
2268	sigset_t full, prev;	2502	sigset_t full, prev;
2269	sigfillset (&full);	2503	sigfillset (&full);
2270	sigprocmask (SIG_SETMASK, &full, &prev);	2504	sigprocmask (SIG_SETMASK, &full, &prev);
2271	#endif	2505	#endif
2272		2506
2273	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2507	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2274		2508
2275	#ifndef _WIN32	2509	#ifndef _WIN32
2276	sigprocmask (SIG_SETMASK, &prev, 0);	2510	sigprocmask (SIG_SETMASK, &prev, 0);
2277	#endif	2511	#endif
2278	}	2512	}
…		…
2316		2550
2317	void	2551	void
2318	ev_child_start (EV_P_ ev_child *w)	2552	ev_child_start (EV_P_ ev_child *w)
2319	{	2553	{
2320	#if EV_MULTIPLICITY	2554	#if EV_MULTIPLICITY
2321	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2555	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2322	#endif	2556	#endif
2323	if (expect_false (ev_is_active (w)))	2557	if (expect_false (ev_is_active (w)))
2324	return;	2558	return;
2325		2559
2326	EV_FREQUENT_CHECK;	2560	EV_FREQUENT_CHECK;
…		…
2351	# ifdef _WIN32	2585	# ifdef _WIN32
2352	# undef lstat	2586	# undef lstat
2353	# define lstat(a,b) _stati64 (a,b)	2587	# define lstat(a,b) _stati64 (a,b)
2354	# endif	2588	# endif
2355		2589
2356	#define DEF_STAT_INTERVAL 5.0074891	2590	#define DEF_STAT_INTERVAL 5.0074891
		2591	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2357	#define MIN_STAT_INTERVAL 0.1074891	2592	#define MIN_STAT_INTERVAL 0.1074891
2358		2593
2359	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2594	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2360		2595
2361	#if EV_USE_INOTIFY	2596	#if EV_USE_INOTIFY
2362	# define EV_INOTIFY_BUFSIZE 8192	2597	# define EV_INOTIFY_BUFSIZE 8192
…		…
2366	{	2601	{
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);	2602	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		2603
2369	if (w->wd < 0)	2604	if (w->wd < 0)
2370	{	2605	{
		2606	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 */	2607	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2372		2608
2373	/* monitor some parent directory for speedup hints */	2609	/* monitor some parent directory for speedup hints */
2374	/* note that exceeding the hardcoded limit is not a correctness issue, */	2610	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2375	/* but an efficiency issue only */	2611	/* but an efficiency issue only */
2376	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2612	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2377	{	2613	{
2378	char path [4096];	2614	char path [4096];
2379	strcpy (path, w->path);	2615	strcpy (path, w->path);
…		…
2383	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2619	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2384	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2620	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2385		2621
2386	char *pend = strrchr (path, '/');	2622	char *pend = strrchr (path, '/');
2387		2623
2388	if (!pend)	2624	if (!pend || pend == path)
2389	break; /* whoops, no '/', complain to your admin */	2625	break;
2390		2626
2391	*pend = 0;	2627	*pend = 0;
2392	w->wd = inotify_add_watch (fs_fd, path, mask);	2628	w->wd = inotify_add_watch (fs_fd, path, mask);
2393	}	2629	}
2394	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2630	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2395	}	2631	}
2396	}	2632	}
2397	else
2398	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2399		2633
2400	if (w->wd >= 0)	2634	if (w->wd >= 0)
		2635	{
2401	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2636	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2637
		2638	/* now local changes will be tracked by inotify, but remote changes won't */
		2639	/* unless the filesystem it known to be local, we therefore still poll */
		2640	/* also do poll on <2.6.25, but with normal frequency */
		2641	struct statfs sfs;
		2642
		2643	if (fs_2625 && !statfs (w->path, &sfs))
		2644	if (sfs.f_type == 0x1373 /* devfs */
		2645	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2646	|| sfs.f_type == 0x3153464a /* jfs */
		2647	|| sfs.f_type == 0x52654973 /* reiser3 */
		2648	|| sfs.f_type == 0x01021994 /* tempfs */
		2649	|| sfs.f_type == 0x58465342 /* xfs */)
		2650	return;
		2651
		2652	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2653	ev_timer_again (EV_A_ &w->timer);
		2654	}
2402	}	2655	}
2403		2656
2404	static void noinline	2657	static void noinline
2405	infy_del (EV_P_ ev_stat *w)	2658	infy_del (EV_P_ ev_stat *w)
2406	{	2659	{
…		…
2420		2673
2421	static void noinline	2674	static void noinline
2422	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2675	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2423	{	2676	{
2424	if (slot < 0)	2677	if (slot < 0)
2425	/* overflow, need to check for all hahs slots */	2678	/* overflow, need to check for all hash slots */
2426	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2679	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2427	infy_wd (EV_A_ slot, wd, ev);	2680	infy_wd (EV_A_ slot, wd, ev);
2428	else	2681	else
2429	{	2682	{
2430	WL w_;	2683	WL w_;
…		…
2436		2689
2437	if (w->wd == wd || wd == -1)	2690	if (w->wd == wd || wd == -1)
2438	{	2691	{
2439	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2692	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2440	{	2693	{
		2694	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2441	w->wd = -1;	2695	w->wd = -1;
2442	infy_add (EV_A_ w); /* re-add, no matter what */	2696	infy_add (EV_A_ w); /* re-add, no matter what */
2443	}	2697	}
2444		2698
2445	stat_timer_cb (EV_A_ &w->timer, 0);	2699	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2458		2712
2459	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2713	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2460	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2714	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2461	}	2715	}
2462		2716
2463	void inline_size	2717	inline_size void
		2718	check_2625 (EV_P)
		2719	{
		2720	/* kernels < 2.6.25 are borked
		2721	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2722	*/
		2723	struct utsname buf;
		2724	int major, minor, micro;
		2725
		2726	if (uname (&buf))
		2727	return;
		2728
		2729	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2730	return;
		2731
		2732	if (major < 2
		2733	|| (major == 2 && minor < 6)
		2734	|| (major == 2 && minor == 6 && micro < 25))
		2735	return;
		2736
		2737	fs_2625 = 1;
		2738	}
		2739
		2740	inline_size void
2464	infy_init (EV_P)	2741	infy_init (EV_P)
2465	{	2742	{
2466	if (fs_fd != -2)	2743	if (fs_fd != -2)
2467	return;	2744	return;
		2745
		2746	fs_fd = -1;
		2747
		2748	check_2625 (EV_A);
2468		2749
2469	fs_fd = inotify_init ();	2750	fs_fd = inotify_init ();
2470		2751
2471	if (fs_fd >= 0)	2752	if (fs_fd >= 0)
2472	{	2753	{
…		…
2474	ev_set_priority (&fs_w, EV_MAXPRI);	2755	ev_set_priority (&fs_w, EV_MAXPRI);
2475	ev_io_start (EV_A_ &fs_w);	2756	ev_io_start (EV_A_ &fs_w);
2476	}	2757	}
2477	}	2758	}
2478		2759
2479	void inline_size	2760	inline_size void
2480	infy_fork (EV_P)	2761	infy_fork (EV_P)
2481	{	2762	{
2482	int slot;	2763	int slot;
2483		2764
2484	if (fs_fd < 0)	2765	if (fs_fd < 0)
…		…
2500	w->wd = -1;	2781	w->wd = -1;
2501		2782
2502	if (fs_fd >= 0)	2783	if (fs_fd >= 0)
2503	infy_add (EV_A_ w); /* re-add, no matter what */	2784	infy_add (EV_A_ w); /* re-add, no matter what */
2504	else	2785	else
2505	ev_timer_start (EV_A_ &w->timer);	2786	ev_timer_again (EV_A_ &w->timer);
2506	}	2787	}
2507
2508	}	2788	}
2509	}	2789	}
2510		2790
		2791	#endif
		2792
		2793	#ifdef _WIN32
		2794	# define EV_LSTAT(p,b) _stati64 (p, b)
		2795	#else
		2796	# define EV_LSTAT(p,b) lstat (p, b)
2511	#endif	2797	#endif
2512		2798
2513	void	2799	void
2514	ev_stat_stat (EV_P_ ev_stat *w)	2800	ev_stat_stat (EV_P_ ev_stat *w)
2515	{	2801	{
…		…
2542	|| w->prev.st_atime != w->attr.st_atime	2828	|| w->prev.st_atime != w->attr.st_atime
2543	|| w->prev.st_mtime != w->attr.st_mtime	2829	|| w->prev.st_mtime != w->attr.st_mtime
2544	|| w->prev.st_ctime != w->attr.st_ctime	2830	|| w->prev.st_ctime != w->attr.st_ctime
2545	) {	2831	) {
2546	#if EV_USE_INOTIFY	2832	#if EV_USE_INOTIFY
		2833	if (fs_fd >= 0)
		2834	{
2547	infy_del (EV_A_ w);	2835	infy_del (EV_A_ w);
2548	infy_add (EV_A_ w);	2836	infy_add (EV_A_ w);
2549	ev_stat_stat (EV_A_ w); /* avoid race... */	2837	ev_stat_stat (EV_A_ w); /* avoid race... */
		2838	}
2550	#endif	2839	#endif
2551		2840
2552	ev_feed_event (EV_A_ w, EV_STAT);	2841	ev_feed_event (EV_A_ w, EV_STAT);
2553	}	2842	}
2554	}	2843	}
…		…
2557	ev_stat_start (EV_P_ ev_stat *w)	2846	ev_stat_start (EV_P_ ev_stat *w)
2558	{	2847	{
2559	if (expect_false (ev_is_active (w)))	2848	if (expect_false (ev_is_active (w)))
2560	return;	2849	return;
2561		2850
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);	2851	ev_stat_stat (EV_A_ w);
2567		2852
		2853	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2568	if (w->interval < MIN_STAT_INTERVAL)	2854	w->interval = MIN_STAT_INTERVAL;
2569	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2570		2855
2571	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2856	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));	2857	ev_set_priority (&w->timer, ev_priority (w));
2573		2858
2574	#if EV_USE_INOTIFY	2859	#if EV_USE_INOTIFY
2575	infy_init (EV_A);	2860	infy_init (EV_A);
2576		2861
2577	if (fs_fd >= 0)	2862	if (fs_fd >= 0)
2578	infy_add (EV_A_ w);	2863	infy_add (EV_A_ w);
2579	else	2864	else
2580	#endif	2865	#endif
2581	ev_timer_start (EV_A_ &w->timer);	2866	ev_timer_again (EV_A_ &w->timer);
2582		2867
2583	ev_start (EV_A_ (W)w, 1);	2868	ev_start (EV_A_ (W)w, 1);
2584		2869
2585	EV_FREQUENT_CHECK;	2870	EV_FREQUENT_CHECK;
2586	}	2871	}
…		…
2756	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3041	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2757	}	3042	}
2758	}	3043	}
2759	}	3044	}
2760		3045
		3046	static void
		3047	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3048	{
		3049	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3050
		3051	ev_embed_stop (EV_A_ w);
		3052
		3053	{
		3054	struct ev_loop *loop = w->other;
		3055
		3056	ev_loop_fork (EV_A);
		3057	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3058	}
		3059
		3060	ev_embed_start (EV_A_ w);
		3061	}
		3062
2761	#if 0	3063	#if 0
2762	static void	3064	static void
2763	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3065	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2764	{	3066	{
2765	ev_idle_stop (EV_A_ idle);	3067	ev_idle_stop (EV_A_ idle);
…		…
2772	if (expect_false (ev_is_active (w)))	3074	if (expect_false (ev_is_active (w)))
2773	return;	3075	return;
2774		3076
2775	{	3077	{
2776	struct ev_loop *loop = w->other;	3078	struct ev_loop *loop = w->other;
2777	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3079	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);	3080	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2779	}	3081	}
2780		3082
2781	EV_FREQUENT_CHECK;	3083	EV_FREQUENT_CHECK;
2782		3084
…		…
2785		3087
2786	ev_prepare_init (&w->prepare, embed_prepare_cb);	3088	ev_prepare_init (&w->prepare, embed_prepare_cb);
2787	ev_set_priority (&w->prepare, EV_MINPRI);	3089	ev_set_priority (&w->prepare, EV_MINPRI);
2788	ev_prepare_start (EV_A_ &w->prepare);	3090	ev_prepare_start (EV_A_ &w->prepare);
2789		3091
		3092	ev_fork_init (&w->fork, embed_fork_cb);
		3093	ev_fork_start (EV_A_ &w->fork);
		3094
2790	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3095	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2791		3096
2792	ev_start (EV_A_ (W)w, 1);	3097	ev_start (EV_A_ (W)w, 1);
2793		3098
2794	EV_FREQUENT_CHECK;	3099	EV_FREQUENT_CHECK;
…		…
2801	if (expect_false (!ev_is_active (w)))	3106	if (expect_false (!ev_is_active (w)))
2802	return;	3107	return;
2803		3108
2804	EV_FREQUENT_CHECK;	3109	EV_FREQUENT_CHECK;
2805		3110
2806	ev_io_stop (EV_A_ &w->io);	3111	ev_io_stop (EV_A_ &w->io);
2807	ev_prepare_stop (EV_A_ &w->prepare);	3112	ev_prepare_stop (EV_A_ &w->prepare);
2808		3113	ev_fork_stop (EV_A_ &w->fork);
2809	ev_stop (EV_A_ (W)w);
2810		3114
2811	EV_FREQUENT_CHECK;	3115	EV_FREQUENT_CHECK;
2812	}	3116	}
2813	#endif	3117	#endif
2814		3118
…		…
2911	once_cb (EV_P_ struct ev_once *once, int revents)	3215	once_cb (EV_P_ struct ev_once *once, int revents)
2912	{	3216	{
2913	void (*cb)(int revents, void *arg) = once->cb;	3217	void (*cb)(int revents, void *arg) = once->cb;
2914	void *arg = once->arg;	3218	void *arg = once->arg;
2915		3219
2916	ev_io_stop (EV_A_ &once->io);	3220	ev_io_stop (EV_A_ &once->io);
2917	ev_timer_stop (EV_A_ &once->to);	3221	ev_timer_stop (EV_A_ &once->to);
2918	ev_free (once);	3222	ev_free (once);
2919		3223
2920	cb (revents, arg);	3224	cb (revents, arg);
2921	}	3225	}
2922		3226
2923	static void	3227	static void
2924	once_cb_io (EV_P_ ev_io *w, int revents)	3228	once_cb_io (EV_P_ ev_io *w, int revents)
2925	{	3229	{
2926	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3230	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3231
		3232	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2927	}	3233	}
2928		3234
2929	static void	3235	static void
2930	once_cb_to (EV_P_ ev_timer *w, int revents)	3236	once_cb_to (EV_P_ ev_timer *w, int revents)
2931	{	3237	{
2932	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3238	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3239
		3240	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2933	}	3241	}
2934		3242
2935	void	3243	void
2936	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3244	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2937	{	3245	{
…		…
2959	ev_timer_set (&once->to, timeout, 0.);	3267	ev_timer_set (&once->to, timeout, 0.);
2960	ev_timer_start (EV_A_ &once->to);	3268	ev_timer_start (EV_A_ &once->to);
2961	}	3269	}
2962	}	3270	}
2963		3271
		3272	/*****************************************************************************/
		3273
		3274	#if EV_WALK_ENABLE
		3275	void
		3276	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3277	{
		3278	int i, j;
		3279	ev_watcher_list *wl, *wn;
		3280
		3281	if (types & (EV_IO | EV_EMBED))
		3282	for (i = 0; i < anfdmax; ++i)
		3283	for (wl = anfds [i].head; wl; )
		3284	{
		3285	wn = wl->next;
		3286
		3287	#if EV_EMBED_ENABLE
		3288	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3289	{
		3290	if (types & EV_EMBED)
		3291	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3292	}
		3293	else
		3294	#endif
		3295	#if EV_USE_INOTIFY
		3296	if (ev_cb ((ev_io *)wl) == infy_cb)
		3297	;
		3298	else
		3299	#endif
		3300	if ((ev_io *)wl != &pipe_w)
		3301	if (types & EV_IO)
		3302	cb (EV_A_ EV_IO, wl);
		3303
		3304	wl = wn;
		3305	}
		3306
		3307	if (types & (EV_TIMER | EV_STAT))
		3308	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3309	#if EV_STAT_ENABLE
		3310	/*TODO: timer is not always active*/
		3311	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3312	{
		3313	if (types & EV_STAT)
		3314	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3315	}
		3316	else
		3317	#endif
		3318	if (types & EV_TIMER)
		3319	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3320
		3321	#if EV_PERIODIC_ENABLE
		3322	if (types & EV_PERIODIC)
		3323	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3324	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3325	#endif
		3326
		3327	#if EV_IDLE_ENABLE
		3328	if (types & EV_IDLE)
		3329	for (j = NUMPRI; i--; )
		3330	for (i = idlecnt [j]; i--; )
		3331	cb (EV_A_ EV_IDLE, idles [j][i]);
		3332	#endif
		3333
		3334	#if EV_FORK_ENABLE
		3335	if (types & EV_FORK)
		3336	for (i = forkcnt; i--; )
		3337	if (ev_cb (forks [i]) != embed_fork_cb)
		3338	cb (EV_A_ EV_FORK, forks [i]);
		3339	#endif
		3340
		3341	#if EV_ASYNC_ENABLE
		3342	if (types & EV_ASYNC)
		3343	for (i = asynccnt; i--; )
		3344	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3345	#endif
		3346
		3347	if (types & EV_PREPARE)
		3348	for (i = preparecnt; i--; )
		3349	#if EV_EMBED_ENABLE
		3350	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3351	#endif
		3352	cb (EV_A_ EV_PREPARE, prepares [i]);
		3353
		3354	if (types & EV_CHECK)
		3355	for (i = checkcnt; i--; )
		3356	cb (EV_A_ EV_CHECK, checks [i]);
		3357
		3358	if (types & EV_SIGNAL)
		3359	for (i = 0; i < signalmax; ++i)
		3360	for (wl = signals [i].head; wl; )
		3361	{
		3362	wn = wl->next;
		3363	cb (EV_A_ EV_SIGNAL, wl);
		3364	wl = wn;
		3365	}
		3366
		3367	if (types & EV_CHILD)
		3368	for (i = EV_PID_HASHSIZE; i--; )
		3369	for (wl = childs [i]; wl; )
		3370	{
		3371	wn = wl->next;
		3372	cb (EV_A_ EV_CHILD, wl);
		3373	wl = wn;
		3374	}
		3375	/* EV_STAT 0x00001000 /* stat data changed */
		3376	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3377	}
		3378	#endif
		3379
2964	#if EV_MULTIPLICITY	3380	#if EV_MULTIPLICITY
2965	#include "ev_wrap.h"	3381	#include "ev_wrap.h"
2966	#endif	3382	#endif
2967		3383
2968	#ifdef __cplusplus	3384	#ifdef __cplusplus

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