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Comparing libev/ev.c (file contents):
Revision 1.247 by root, Wed May 21 21:22:10 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
…		…
235	# else	266	# else
236	# define EV_USE_EVENTFD 0	267	# define EV_USE_EVENTFD 0
237	# endif	268	# endif
238	#endif	269	#endif
239		270
		271	#if 0 /* debugging */
		272	# define EV_VERIFY 3
		273	# define EV_USE_4HEAP 1
		274	# define EV_HEAP_CACHE_AT 1
		275	#endif
		276
		277	#ifndef EV_VERIFY
		278	# define EV_VERIFY !EV_MINIMAL
		279	#endif
		280
240	#ifndef EV_USE_4HEAP	281	#ifndef EV_USE_4HEAP
241	# define EV_USE_4HEAP !EV_MINIMAL	282	# define EV_USE_4HEAP !EV_MINIMAL
242	#endif	283	#endif
243		284
244	#ifndef EV_HEAP_CACHE_AT	285	#ifndef EV_HEAP_CACHE_AT
245	# 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
246	#endif	301	#endif
247		302
248	/* 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 */
249		304
250	#ifndef CLOCK_MONOTONIC	305	#ifndef CLOCK_MONOTONIC
…		…
267	# include <sys/select.h>	322	# include <sys/select.h>
268	# endif	323	# endif
269	#endif	324	#endif
270		325
271	#if EV_USE_INOTIFY	326	#if EV_USE_INOTIFY
		327	# include <sys/utsname.h>
		328	# include <sys/statfs.h>
272	# 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
273	#endif	335	#endif
274		336
275	#if EV_SELECT_IS_WINSOCKET	337	#if EV_SELECT_IS_WINSOCKET
276	# include <winsock.h>	338	# include <winsock.h>
277	#endif	339	#endif
…		…
287	}	349	}
288	# endif	350	# endif
289	#endif	351	#endif
290		352
291	/**/	353	/**/
		354
		355	#if EV_VERIFY >= 3
		356	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
		357	#else
		358	# define EV_FREQUENT_CHECK do { } while (0)
		359	#endif
292		360
293	/*	361	/*
294	* This is used to avoid floating point rounding problems.	362	* This is used to avoid floating point rounding problems.
295	* It is added to ev_rt_now when scheduling periodics	363	* It is added to ev_rt_now when scheduling periodics
296	* to ensure progress, time-wise, even when rounding	364	* to ensure progress, time-wise, even when rounding
…		…
323	# define inline_speed static noinline	391	# define inline_speed static noinline
324	#else	392	#else
325	# define inline_speed static inline	393	# define inline_speed static inline
326	#endif	394	#endif
327		395
328	#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
329	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	401	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		402	#endif
330		403
331	#define EMPTY /* required for microsofts broken pseudo-c compiler */	404	#define EMPTY /* required for microsofts broken pseudo-c compiler */
332	#define EMPTY2(a,b) /* used to suppress some warnings */	405	#define EMPTY2(a,b) /* used to suppress some warnings */
333		406
334	typedef ev_watcher *W;	407	typedef ev_watcher *W;
…		…
336	typedef ev_watcher_time *WT;	409	typedef ev_watcher_time *WT;
337		410
338	#define ev_active(w) ((W)(w))->active	411	#define ev_active(w) ((W)(w))->active
339	#define ev_at(w) ((WT)(w))->at	412	#define ev_at(w) ((WT)(w))->at
340		413
341	#if EV_USE_MONOTONIC	414	#if EV_USE_REALTIME
342	/* 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 */
343	/* 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
344	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? */
345	#endif	422	#endif
346		423
347	#ifdef _WIN32	424	#ifdef _WIN32
348	# include "ev_win32.c"	425	# include "ev_win32.c"
…		…
357	{	434	{
358	syserr_cb = cb;	435	syserr_cb = cb;
359	}	436	}
360		437
361	static void noinline	438	static void noinline
362	syserr (const char *msg)	439	ev_syserr (const char *msg)
363	{	440	{
364	if (!msg)	441	if (!msg)
365	msg = "(libev) system error";	442	msg = "(libev) system error";
366		443
367	if (syserr_cb)	444	if (syserr_cb)
…		…
413	#define ev_malloc(size) ev_realloc (0, (size))	490	#define ev_malloc(size) ev_realloc (0, (size))
414	#define ev_free(ptr) ev_realloc ((ptr), 0)	491	#define ev_free(ptr) ev_realloc ((ptr), 0)
415		492
416	/*****************************************************************************/	493	/*****************************************************************************/
417		494
		495	/* set in reify when reification needed */
		496	#define EV_ANFD_REIFY 1
		497
		498	/* file descriptor info structure */
418	typedef struct	499	typedef struct
419	{	500	{
420	WL head;	501	WL head;
421	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 */
422	unsigned char reify;	505	unsigned char unused;
		506	#if EV_USE_EPOLL
		507	unsigned int egen; /* generation counter to counter epoll bugs */
		508	#endif
423	#if EV_SELECT_IS_WINSOCKET	509	#if EV_SELECT_IS_WINSOCKET
424	SOCKET handle;	510	SOCKET handle;
425	#endif	511	#endif
426	} ANFD;	512	} ANFD;
427		513
		514	/* stores the pending event set for a given watcher */
428	typedef struct	515	typedef struct
429	{	516	{
430	W w;	517	W w;
431	int events;	518	int events; /* the pending event set for the given watcher */
432	} ANPENDING;	519	} ANPENDING;
433		520
434	#if EV_USE_INOTIFY	521	#if EV_USE_INOTIFY
435	/* hash table entry per inotify-id */	522	/* hash table entry per inotify-id */
436	typedef struct	523	typedef struct
…		…
439	} ANFS;	526	} ANFS;
440	#endif	527	#endif
441		528
442	/* Heap Entry */	529	/* Heap Entry */
443	#if EV_HEAP_CACHE_AT	530	#if EV_HEAP_CACHE_AT
		531	/* a heap element */
444	typedef struct {	532	typedef struct {
445	ev_tstamp at;	533	ev_tstamp at;
446	WT w;	534	WT w;
447	} ANHE;	535	} ANHE;
448		536
449	#define ANHE_w(he) (he).w /* access watcher, read-write */	537	#define ANHE_w(he) (he).w /* access watcher, read-write */
450	#define ANHE_at(he) (he).at /* access cached at, read-only */	538	#define ANHE_at(he) (he).at /* access cached at, read-only */
451	#define ANHE_at_set(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 */
452	#else	540	#else
		541	/* a heap element */
453	typedef WT ANHE;	542	typedef WT ANHE;
454		543
455	#define ANHE_w(he) (he)	544	#define ANHE_w(he) (he)
456	#define ANHE_at(he) (he)->at	545	#define ANHE_at(he) (he)->at
457	#define ANHE_at_set(he)	546	#define ANHE_at_cache(he)
458	#endif	547	#endif
459		548
460	#if EV_MULTIPLICITY	549	#if EV_MULTIPLICITY
461		550
462	struct ev_loop	551	struct ev_loop
…		…
481		570
482	static int ev_default_loop_ptr;	571	static int ev_default_loop_ptr;
483		572
484	#endif	573	#endif
485		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
486	/*****************************************************************************/	587	/*****************************************************************************/
487		588
		589	#ifndef EV_HAVE_EV_TIME
488	ev_tstamp	590	ev_tstamp
489	ev_time (void)	591	ev_time (void)
490	{	592	{
491	#if EV_USE_REALTIME	593	#if EV_USE_REALTIME
		594	if (expect_true (have_realtime))
		595	{
492	struct timespec ts;	596	struct timespec ts;
493	clock_gettime (CLOCK_REALTIME, &ts);	597	clock_gettime (CLOCK_REALTIME, &ts);
494	return ts.tv_sec + ts.tv_nsec * 1e-9;	598	return ts.tv_sec + ts.tv_nsec * 1e-9;
495	#else	599	}
		600	#endif
		601
496	struct timeval tv;	602	struct timeval tv;
497	gettimeofday (&tv, 0);	603	gettimeofday (&tv, 0);
498	return tv.tv_sec + tv.tv_usec * 1e-6;	604	return tv.tv_sec + tv.tv_usec * 1e-6;
499	#endif
500	}	605	}
		606	#endif
501		607
502	ev_tstamp inline_size	608	inline_size ev_tstamp
503	get_clock (void)	609	get_clock (void)
504	{	610	{
505	#if EV_USE_MONOTONIC	611	#if EV_USE_MONOTONIC
506	if (expect_true (have_monotonic))	612	if (expect_true (have_monotonic))
507	{	613	{
…		…
540	struct timeval tv;	646	struct timeval tv;
541		647
542	tv.tv_sec = (time_t)delay;	648	tv.tv_sec = (time_t)delay;
543	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	649	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
544		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 */
545	select (0, 0, 0, 0, &tv);	654	select (0, 0, 0, 0, &tv);
546	#endif	655	#endif
547	}	656	}
548	}	657	}
549		658
550	/*****************************************************************************/	659	/*****************************************************************************/
551		660
552	#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 */
553		662
554	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
555	array_nextsize (int elem, int cur, int cnt)	666	array_nextsize (int elem, int cur, int cnt)
556	{	667	{
557	int ncur = cur + 1;	668	int ncur = cur + 1;
558		669
559	do	670	do
…		…
576	array_realloc (int elem, void *base, int *cur, int cnt)	687	array_realloc (int elem, void *base, int *cur, int cnt)
577	{	688	{
578	*cur = array_nextsize (elem, *cur, cnt);	689	*cur = array_nextsize (elem, *cur, cnt);
579	return ev_realloc (base, elem * *cur);	690	return ev_realloc (base, elem * *cur);
580	}	691	}
		692
		693	#define array_init_zero(base,count) \
		694	memset ((void *)(base), 0, sizeof (*(base)) * (count))
581		695
582	#define array_needsize(type,base,cur,cnt,init) \	696	#define array_needsize(type,base,cur,cnt,init) \
583	if (expect_false ((cnt) > (cur))) \	697	if (expect_false ((cnt) > (cur))) \
584	{ \	698	{ \
585	int ocur_ = (cur); \	699	int ocur_ = (cur); \
…		…
597	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	711	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
598	}	712	}
599	#endif	713	#endif
600		714
601	#define array_free(stem, idx) \	715	#define array_free(stem, idx) \
602	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
603		717
604	/*****************************************************************************/	718	/*****************************************************************************/
		719
		720	/* dummy callback for pending events */
		721	static void noinline
		722	pendingcb (EV_P_ ev_prepare *w, int revents)
		723	{
		724	}
605		725
606	void noinline	726	void noinline
607	ev_feed_event (EV_P_ void *w, int revents)	727	ev_feed_event (EV_P_ void *w, int revents)
608	{	728	{
609	W w_ = (W)w;	729	W w_ = (W)w;
…		…
618	pendings [pri][w_->pending - 1].w = w_;	738	pendings [pri][w_->pending - 1].w = w_;
619	pendings [pri][w_->pending - 1].events = revents;	739	pendings [pri][w_->pending - 1].events = revents;
620	}	740	}
621	}	741	}
622		742
623	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
624	queue_events (EV_P_ W *events, int eventcnt, int type)	759	queue_events (EV_P_ W *events, int eventcnt, int type)
625	{	760	{
626	int i;	761	int i;
627		762
628	for (i = 0; i < eventcnt; ++i)	763	for (i = 0; i < eventcnt; ++i)
629	ev_feed_event (EV_A_ events [i], type);	764	ev_feed_event (EV_A_ events [i], type);
630	}	765	}
631		766
632	/*****************************************************************************/	767	/*****************************************************************************/
633		768
634	void inline_size	769	inline_speed void
635	anfds_init (ANFD *base, int count)
636	{
637	while (count--)
638	{
639	base->head = 0;
640	base->events = EV_NONE;
641	base->reify = 0;
642
643	++base;
644	}
645	}
646
647	void inline_speed
648	fd_event (EV_P_ int fd, int revents)	770	fd_event_nc (EV_P_ int fd, int revents)
649	{	771	{
650	ANFD *anfd = anfds + fd;	772	ANFD *anfd = anfds + fd;
651	ev_io *w;	773	ev_io *w;
652		774
653	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)
…		…
657	if (ev)	779	if (ev)
658	ev_feed_event (EV_A_ (W)w, ev);	780	ev_feed_event (EV_A_ (W)w, ev);
659	}	781	}
660	}	782	}
661		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
662	void	795	void
663	ev_feed_fd_event (EV_P_ int fd, int revents)	796	ev_feed_fd_event (EV_P_ int fd, int revents)
664	{	797	{
665	if (fd >= 0 && fd < anfdmax)	798	if (fd >= 0 && fd < anfdmax)
666	fd_event (EV_A_ fd, revents);	799	fd_event_nc (EV_A_ fd, revents);
667	}	800	}
668		801
669	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
670	fd_reify (EV_P)	805	fd_reify (EV_P)
671	{	806	{
672	int i;	807	int i;
673		808
674	for (i = 0; i < fdchangecnt; ++i)	809	for (i = 0; i < fdchangecnt; ++i)
…		…
683	events |= (unsigned char)w->events;	818	events |= (unsigned char)w->events;
684		819
685	#if EV_SELECT_IS_WINSOCKET	820	#if EV_SELECT_IS_WINSOCKET
686	if (events)	821	if (events)
687	{	822	{
688	unsigned long argp;	823	unsigned long arg;
689	#ifdef EV_FD_TO_WIN32_HANDLE	824	#ifdef EV_FD_TO_WIN32_HANDLE
690	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	825	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
691	#else	826	#else
692	anfd->handle = _get_osfhandle (fd);	827	anfd->handle = _get_osfhandle (fd);
693	#endif	828	#endif
694	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));
695	}	830	}
696	#endif	831	#endif
697		832
698	{	833	{
699	unsigned char o_events = anfd->events;	834	unsigned char o_events = anfd->events;
700	unsigned char o_reify = anfd->reify;	835	unsigned char o_reify = anfd->reify;
701		836
702	anfd->reify = 0;	837	anfd->reify = 0;
703	anfd->events = events;	838	anfd->events = events;
704		839
705	if (o_events != events || o_reify & EV_IOFDSET)	840	if (o_events != events || o_reify & EV__IOFDSET)
706	backend_modify (EV_A_ fd, o_events, events);	841	backend_modify (EV_A_ fd, o_events, events);
707	}	842	}
708	}	843	}
709		844
710	fdchangecnt = 0;	845	fdchangecnt = 0;
711	}	846	}
712		847
713	void inline_size	848	/* something about the given fd changed */
		849	inline_size void
714	fd_change (EV_P_ int fd, int flags)	850	fd_change (EV_P_ int fd, int flags)
715	{	851	{
716	unsigned char reify = anfds [fd].reify;	852	unsigned char reify = anfds [fd].reify;
717	anfds [fd].reify |= flags;	853	anfds [fd].reify |= flags;
718		854
…		…
722	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	858	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
723	fdchanges [fdchangecnt - 1] = fd;	859	fdchanges [fdchangecnt - 1] = fd;
724	}	860	}
725	}	861	}
726		862
727	void inline_speed	863	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		864	inline_speed void
728	fd_kill (EV_P_ int fd)	865	fd_kill (EV_P_ int fd)
729	{	866	{
730	ev_io *w;	867	ev_io *w;
731		868
732	while ((w = (ev_io *)anfds [fd].head))	869	while ((w = (ev_io *)anfds [fd].head))
…		…
734	ev_io_stop (EV_A_ w);	871	ev_io_stop (EV_A_ w);
735	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);
736	}	873	}
737	}	874	}
738		875
739	int inline_size	876	/* check whether the given fd is atcually valid, for error recovery */
		877	inline_size int
740	fd_valid (int fd)	878	fd_valid (int fd)
741	{	879	{
742	#ifdef _WIN32	880	#ifdef _WIN32
743	return _get_osfhandle (fd) != -1;	881	return _get_osfhandle (fd) != -1;
744	#else	882	#else
…		…
752	{	890	{
753	int fd;	891	int fd;
754		892
755	for (fd = 0; fd < anfdmax; ++fd)	893	for (fd = 0; fd < anfdmax; ++fd)
756	if (anfds [fd].events)	894	if (anfds [fd].events)
757	if (!fd_valid (fd) == -1 && errno == EBADF)	895	if (!fd_valid (fd) && errno == EBADF)
758	fd_kill (EV_A_ fd);	896	fd_kill (EV_A_ fd);
759	}	897	}
760		898
761	/* 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 */
762	static void noinline	900	static void noinline
…		…
780		918
781	for (fd = 0; fd < anfdmax; ++fd)	919	for (fd = 0; fd < anfdmax; ++fd)
782	if (anfds [fd].events)	920	if (anfds [fd].events)
783	{	921	{
784	anfds [fd].events = 0;	922	anfds [fd].events = 0;
		923	anfds [fd].emask = 0;
785	fd_change (EV_A_ fd, EV_IOFDSET | 1);	924	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
786	}	925	}
787	}	926	}
788		927
789	/*****************************************************************************/	928	/*****************************************************************************/
790		929
…		…
803	#if EV_USE_4HEAP	942	#if EV_USE_4HEAP
804		943
805	#define DHEAP 4	944	#define DHEAP 4
806	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	945	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
807	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)	946	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
808		947	#define UPHEAP_DONE(p,k) ((p) == (k))
809	/* towards the root */
810	void inline_speed
811	upheap (ANHE *heap, int k)
812	{
813	ANHE he = heap [k];
814
815	for (;;)
816	{
817	int p = HPARENT (k);
818
819	if (p == k || ANHE_at (heap [p]) <= ANHE_at (he))
820	break;
821
822	heap [k] = heap [p];
823	ev_active (ANHE_w (heap [k])) = k;
824	k = p;
825	}
826
827	heap [k] = he;
828	ev_active (ANHE_w (he)) = k;
829	}
830		948
831	/* away from the root */	949	/* away from the root */
832	void inline_speed	950	inline_speed void
833	downheap (ANHE *heap, int N, int k)	951	downheap (ANHE *heap, int N, int k)
834	{	952	{
835	ANHE he = heap [k];	953	ANHE he = heap [k];
836	ANHE *E = heap + N + HEAP0;	954	ANHE *E = heap + N + HEAP0;
837		955
838	for (;;)	956	for (;;)
839	{	957	{
840	ev_tstamp minat;	958	ev_tstamp minat;
841	ANHE *minpos;	959	ANHE *minpos;
842	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0;	960	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
843		961
844	// find minimum child	962	/* find minimum child */
845	if (expect_true (pos + DHEAP - 1 < E))	963	if (expect_true (pos + DHEAP - 1 < E))
846	{	964	{
847	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));	965	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
848	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));	966	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
849	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));	967	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
…		…
870		988
871	heap [k] = he;	989	heap [k] = he;
872	ev_active (ANHE_w (he)) = k;	990	ev_active (ANHE_w (he)) = k;
873	}	991	}
874		992
875	#else // 4HEAP	993	#else /* 4HEAP */
876		994
877	#define HEAP0 1	995	#define HEAP0 1
878	#define HPARENT(k) ((k) >> 1)	996	#define HPARENT(k) ((k) >> 1)
		997	#define UPHEAP_DONE(p,k) (!(p))
879		998
880	/* towards the root */	999	/* away from the root */
881	void inline_speed	1000	inline_speed void
882	upheap (ANHE *heap, int k)	1001	downheap (ANHE *heap, int N, int k)
883	{	1002	{
884	ANHE he = heap [k];	1003	ANHE he = heap [k];
885		1004
886	for (;;)	1005	for (;;)
887	{	1006	{
888	int p = HPARENT (k);	1007	int c = k << 1;
889		1008
890	/* maybe we could use a dummy element at heap [0]? */	1009	if (c > N + HEAP0 - 1)
891	if (!p || ANHE_at (heap [p]) <= ANHE_at (he))
892	break;	1010	break;
893		1011
894	heap [k] = heap [p];
895	ev_active (ANHE_w (heap [k])) = k;
896	k = p;
897	}
898
899	heap [k] = he;
900	ev_active (ANHE_w (heap [k])) = k;
901	}
902
903	/* away from the root */
904	void inline_speed
905	downheap (ANHE *heap, int N, int k)
906	{
907	ANHE he = heap [k];
908
909	for (;;)
910	{
911	int c = k << 1;
912
913	if (c > N)
914	break;
915
916	c += c + 1 < N && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])	1012	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
917	? 1 : 0;	1013	? 1 : 0;
918		1014
919	if (ANHE_at (he) <= ANHE_at (heap [c]))	1015	if (ANHE_at (he) <= ANHE_at (heap [c]))
920	break;	1016	break;
921		1017
…		…
928	heap [k] = he;	1024	heap [k] = he;
929	ev_active (ANHE_w (he)) = k;	1025	ev_active (ANHE_w (he)) = k;
930	}	1026	}
931	#endif	1027	#endif
932		1028
933	void inline_size	1029	/* towards the root */
		1030	inline_speed void
		1031	upheap (ANHE *heap, int k)
		1032	{
		1033	ANHE he = heap [k];
		1034
		1035	for (;;)
		1036	{
		1037	int p = HPARENT (k);
		1038
		1039	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		1040	break;
		1041
		1042	heap [k] = heap [p];
		1043	ev_active (ANHE_w (heap [k])) = k;
		1044	k = p;
		1045	}
		1046
		1047	heap [k] = he;
		1048	ev_active (ANHE_w (he)) = k;
		1049	}
		1050
		1051	/* move an element suitably so it is in a correct place */
		1052	inline_size void
934	adjustheap (ANHE *heap, int N, int k)	1053	adjustheap (ANHE *heap, int N, int k)
935	{	1054	{
936	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]))
937	upheap (heap, k);	1056	upheap (heap, k);
938	else	1057	else
939	downheap (heap, N, k);	1058	downheap (heap, N, k);
940	}	1059	}
941		1060
		1061	/* rebuild the heap: this function is used only once and executed rarely */
		1062	inline_size void
		1063	reheap (ANHE *heap, int N)
		1064	{
		1065	int i;
		1066
		1067	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		1068	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		1069	for (i = 0; i < N; ++i)
		1070	upheap (heap, i + HEAP0);
		1071	}
		1072
942	/*****************************************************************************/	1073	/*****************************************************************************/
943		1074
		1075	/* associate signal watchers to a signal signal */
944	typedef struct	1076	typedef struct
945	{	1077	{
946	WL head;	1078	WL head;
947	EV_ATOMIC_T gotsig;	1079	EV_ATOMIC_T gotsig;
948	} ANSIG;	1080	} ANSIG;
…		…
950	static ANSIG *signals;	1082	static ANSIG *signals;
951	static int signalmax;	1083	static int signalmax;
952		1084
953	static EV_ATOMIC_T gotsig;	1085	static EV_ATOMIC_T gotsig;
954		1086
955	void inline_size
956	signals_init (ANSIG *base, int count)
957	{
958	while (count--)
959	{
960	base->head = 0;
961	base->gotsig = 0;
962
963	++base;
964	}
965	}
966
967	/*****************************************************************************/	1087	/*****************************************************************************/
968		1088
969	void inline_speed	1089	/* used to prepare libev internal fd's */
		1090	/* this is not fork-safe */
		1091	inline_speed void
970	fd_intern (int fd)	1092	fd_intern (int fd)
971	{	1093	{
972	#ifdef _WIN32	1094	#ifdef _WIN32
973	int arg = 1;	1095	unsigned long arg = 1;
974	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1096	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
975	#else	1097	#else
976	fcntl (fd, F_SETFD, FD_CLOEXEC);	1098	fcntl (fd, F_SETFD, FD_CLOEXEC);
977	fcntl (fd, F_SETFL, O_NONBLOCK);	1099	fcntl (fd, F_SETFL, O_NONBLOCK);
978	#endif	1100	#endif
979	}	1101	}
980		1102
981	static void noinline	1103	static void noinline
982	evpipe_init (EV_P)	1104	evpipe_init (EV_P)
983	{	1105	{
984	if (!ev_is_active (&pipeev))	1106	if (!ev_is_active (&pipe_w))
985	{	1107	{
986	#if EV_USE_EVENTFD	1108	#if EV_USE_EVENTFD
987	if ((evfd = eventfd (0, 0)) >= 0)	1109	if ((evfd = eventfd (0, 0)) >= 0)
988	{	1110	{
989	evpipe [0] = -1;	1111	evpipe [0] = -1;
990	fd_intern (evfd);	1112	fd_intern (evfd);
991	ev_io_set (&pipeev, evfd, EV_READ);	1113	ev_io_set (&pipe_w, evfd, EV_READ);
992	}	1114	}
993	else	1115	else
994	#endif	1116	#endif
995	{	1117	{
996	while (pipe (evpipe))	1118	while (pipe (evpipe))
997	syserr ("(libev) error creating signal/async pipe");	1119	ev_syserr ("(libev) error creating signal/async pipe");
998		1120
999	fd_intern (evpipe [0]);	1121	fd_intern (evpipe [0]);
1000	fd_intern (evpipe [1]);	1122	fd_intern (evpipe [1]);
1001	ev_io_set (&pipeev, evpipe [0], EV_READ);	1123	ev_io_set (&pipe_w, evpipe [0], EV_READ);
1002	}	1124	}
1003		1125
1004	ev_io_start (EV_A_ &pipeev);	1126	ev_io_start (EV_A_ &pipe_w);
1005	ev_unref (EV_A); /* watcher should not keep loop alive */	1127	ev_unref (EV_A); /* watcher should not keep loop alive */
1006	}	1128	}
1007	}	1129	}
1008		1130
1009	void inline_size	1131	inline_size void
1010	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1132	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1011	{	1133	{
1012	if (!*flag)	1134	if (!*flag)
1013	{	1135	{
1014	int old_errno = errno; /* save errno because write might clobber it */	1136	int old_errno = errno; /* save errno because write might clobber it */
…		…
1027		1149
1028	errno = old_errno;	1150	errno = old_errno;
1029	}	1151	}
1030	}	1152	}
1031		1153
		1154	/* called whenever the libev signal pipe */
		1155	/* got some events (signal, async) */
1032	static void	1156	static void
1033	pipecb (EV_P_ ev_io *iow, int revents)	1157	pipecb (EV_P_ ev_io *iow, int revents)
1034	{	1158	{
1035	#if EV_USE_EVENTFD	1159	#if EV_USE_EVENTFD
1036	if (evfd >= 0)	1160	if (evfd >= 0)
…		…
1092	ev_feed_signal_event (EV_P_ int signum)	1216	ev_feed_signal_event (EV_P_ int signum)
1093	{	1217	{
1094	WL w;	1218	WL w;
1095		1219
1096	#if EV_MULTIPLICITY	1220	#if EV_MULTIPLICITY
1097	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));
1098	#endif	1222	#endif
1099		1223
1100	--signum;	1224	--signum;
1101		1225
1102	if (signum < 0 || signum >= signalmax)	1226	if (signum < 0 || signum >= signalmax)
…		…
1118		1242
1119	#ifndef WIFCONTINUED	1243	#ifndef WIFCONTINUED
1120	# define WIFCONTINUED(status) 0	1244	# define WIFCONTINUED(status) 0
1121	#endif	1245	#endif
1122		1246
1123	void inline_speed	1247	/* handle a single child status event */
		1248	inline_speed void
1124	child_reap (EV_P_ int chain, int pid, int status)	1249	child_reap (EV_P_ int chain, int pid, int status)
1125	{	1250	{
1126	ev_child *w;	1251	ev_child *w;
1127	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1252	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1128		1253
…		…
1141		1266
1142	#ifndef WCONTINUED	1267	#ifndef WCONTINUED
1143	# define WCONTINUED 0	1268	# define WCONTINUED 0
1144	#endif	1269	#endif
1145		1270
		1271	/* called on sigchld etc., calls waitpid */
1146	static void	1272	static void
1147	childcb (EV_P_ ev_signal *sw, int revents)	1273	childcb (EV_P_ ev_signal *sw, int revents)
1148	{	1274	{
1149	int pid, status;	1275	int pid, status;
1150		1276
…		…
1231	/* kqueue is borked on everything but netbsd apparently */	1357	/* kqueue is borked on everything but netbsd apparently */
1232	/* 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 */
1233	flags &= ~EVBACKEND_KQUEUE;	1359	flags &= ~EVBACKEND_KQUEUE;
1234	#endif	1360	#endif
1235	#ifdef __APPLE__	1361	#ifdef __APPLE__
1236	// flags &= ~EVBACKEND_KQUEUE; for documentation	1362	/* only select works correctly on that "unix-certified" platform */
1237	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 */
1238	#endif	1365	#endif
1239		1366
1240	return flags;	1367	return flags;
1241	}	1368	}
1242		1369
…		…
1256	ev_backend (EV_P)	1383	ev_backend (EV_P)
1257	{	1384	{
1258	return backend;	1385	return backend;
1259	}	1386	}
1260		1387
		1388	#if EV_MINIMAL < 2
1261	unsigned int	1389	unsigned int
1262	ev_loop_count (EV_P)	1390	ev_loop_count (EV_P)
1263	{	1391	{
1264	return loop_count;	1392	return loop_count;
1265	}	1393	}
1266		1394
		1395	unsigned int
		1396	ev_loop_depth (EV_P)
		1397	{
		1398	return loop_depth;
		1399	}
		1400
1267	void	1401	void
1268	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1402	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1269	{	1403	{
1270	io_blocktime = interval;	1404	io_blocktime = interval;
1271	}	1405	}
…		…
1274	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1408	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1275	{	1409	{
1276	timeout_blocktime = interval;	1410	timeout_blocktime = interval;
1277	}	1411	}
1278		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 */
1279	static void noinline	1438	static void noinline
1280	loop_init (EV_P_ unsigned int flags)	1439	loop_init (EV_P_ unsigned int flags)
1281	{	1440	{
1282	if (!backend)	1441	if (!backend)
1283	{	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
1284	#if EV_USE_MONOTONIC	1453	#if EV_USE_MONOTONIC
		1454	if (!have_monotonic)
1285	{	1455	{
1286	struct timespec ts;	1456	struct timespec ts;
		1457
1287	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1458	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1288	have_monotonic = 1;	1459	have_monotonic = 1;
1289	}	1460	}
1290	#endif	1461	#endif
1291		1462
1292	ev_rt_now = ev_time ();	1463	ev_rt_now = ev_time ();
1293	mn_now = get_clock ();	1464	mn_now = get_clock ();
1294	now_floor = mn_now;	1465	now_floor = mn_now;
1295	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
1296		1470
1297	io_blocktime = 0.;	1471	io_blocktime = 0.;
1298	timeout_blocktime = 0.;	1472	timeout_blocktime = 0.;
1299	backend = 0;	1473	backend = 0;
1300	backend_fd = -1;	1474	backend_fd = -1;
…		…
1331	#endif	1505	#endif
1332	#if EV_USE_SELECT	1506	#if EV_USE_SELECT
1333	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1507	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1334	#endif	1508	#endif
1335		1509
		1510	ev_prepare_init (&pending_w, pendingcb);
		1511
1336	ev_init (&pipeev, pipecb);	1512	ev_init (&pipe_w, pipecb);
1337	ev_set_priority (&pipeev, EV_MAXPRI);	1513	ev_set_priority (&pipe_w, EV_MAXPRI);
1338	}	1514	}
1339	}	1515	}
1340		1516
		1517	/* free up a loop structure */
1341	static void noinline	1518	static void noinline
1342	loop_destroy (EV_P)	1519	loop_destroy (EV_P)
1343	{	1520	{
1344	int i;	1521	int i;
1345		1522
1346	if (ev_is_active (&pipeev))	1523	if (ev_is_active (&pipe_w))
1347	{	1524	{
1348	ev_ref (EV_A); /* signal watcher */	1525	ev_ref (EV_A); /* signal watcher */
1349	ev_io_stop (EV_A_ &pipeev);	1526	ev_io_stop (EV_A_ &pipe_w);
1350		1527
1351	#if EV_USE_EVENTFD	1528	#if EV_USE_EVENTFD
1352	if (evfd >= 0)	1529	if (evfd >= 0)
1353	close (evfd);	1530	close (evfd);
1354	#endif	1531	#endif
…		…
1393	}	1570	}
1394		1571
1395	ev_free (anfds); anfdmax = 0;	1572	ev_free (anfds); anfdmax = 0;
1396		1573
1397	/* 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);
1398	array_free (fdchange, EMPTY);	1576	array_free (fdchange, EMPTY);
1399	array_free (timer, EMPTY);	1577	array_free (timer, EMPTY);
1400	#if EV_PERIODIC_ENABLE	1578	#if EV_PERIODIC_ENABLE
1401	array_free (periodic, EMPTY);	1579	array_free (periodic, EMPTY);
1402	#endif	1580	#endif
…		…
1411		1589
1412	backend = 0;	1590	backend = 0;
1413	}	1591	}
1414		1592
1415	#if EV_USE_INOTIFY	1593	#if EV_USE_INOTIFY
1416	void inline_size infy_fork (EV_P);	1594	inline_size void infy_fork (EV_P);
1417	#endif	1595	#endif
1418		1596
1419	void inline_size	1597	inline_size void
1420	loop_fork (EV_P)	1598	loop_fork (EV_P)
1421	{	1599	{
1422	#if EV_USE_PORT	1600	#if EV_USE_PORT
1423	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1601	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1424	#endif	1602	#endif
…		…
1430	#endif	1608	#endif
1431	#if EV_USE_INOTIFY	1609	#if EV_USE_INOTIFY
1432	infy_fork (EV_A);	1610	infy_fork (EV_A);
1433	#endif	1611	#endif
1434		1612
1435	if (ev_is_active (&pipeev))	1613	if (ev_is_active (&pipe_w))
1436	{	1614	{
1437	/* this "locks" the handlers against writing to the pipe */	1615	/* this "locks" the handlers against writing to the pipe */
1438	/* while we modify the fd vars */	1616	/* while we modify the fd vars */
1439	gotsig = 1;	1617	gotsig = 1;
1440	#if EV_ASYNC_ENABLE	1618	#if EV_ASYNC_ENABLE
1441	gotasync = 1;	1619	gotasync = 1;
1442	#endif	1620	#endif
1443		1621
1444	ev_ref (EV_A);	1622	ev_ref (EV_A);
1445	ev_io_stop (EV_A_ &pipeev);	1623	ev_io_stop (EV_A_ &pipe_w);
1446		1624
1447	#if EV_USE_EVENTFD	1625	#if EV_USE_EVENTFD
1448	if (evfd >= 0)	1626	if (evfd >= 0)
1449	close (evfd);	1627	close (evfd);
1450	#endif	1628	#endif
…		…
1455	close (evpipe [1]);	1633	close (evpipe [1]);
1456	}	1634	}
1457		1635
1458	evpipe_init (EV_A);	1636	evpipe_init (EV_A);
1459	/* now iterate over everything, in case we missed something */	1637	/* now iterate over everything, in case we missed something */
1460	pipecb (EV_A_ &pipeev, EV_READ);	1638	pipecb (EV_A_ &pipe_w, EV_READ);
1461	}	1639	}
1462		1640
1463	postfork = 0;	1641	postfork = 0;
1464	}	1642	}
1465		1643
1466	#if EV_MULTIPLICITY	1644	#if EV_MULTIPLICITY
		1645
1467	struct ev_loop *	1646	struct ev_loop *
1468	ev_loop_new (unsigned int flags)	1647	ev_loop_new (unsigned int flags)
1469	{	1648	{
1470	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));
1471		1650
…		…
1488		1667
1489	void	1668	void
1490	ev_loop_fork (EV_P)	1669	ev_loop_fork (EV_P)
1491	{	1670	{
1492	postfork = 1; /* must be in line with ev_default_fork */	1671	postfork = 1; /* must be in line with ev_default_fork */
		1672	}
		1673	#endif /* multiplicity */
		1674
		1675	#if EV_VERIFY
		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
		1701	array_verify (EV_P_ W *ws, int cnt)
		1702	{
		1703	while (cnt--)
		1704	{
		1705	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1706	verify_watcher (EV_A_ ws [cnt]);
		1707	}
		1708	}
		1709	#endif
		1710
		1711	#if EV_MINIMAL < 2
		1712	void
		1713	ev_loop_verify (EV_P)
		1714	{
		1715	#if EV_VERIFY
		1716	int i;
		1717	WL w;
		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);
		1735	verify_heap (EV_A_ timers, timercnt);
		1736
		1737	#if EV_PERIODIC_ENABLE
		1738	assert (periodicmax >= periodiccnt);
		1739	verify_heap (EV_A_ periodics, periodiccnt);
		1740	#endif
		1741
		1742	for (i = NUMPRI; i--; )
		1743	{
		1744	assert (pendingmax [i] >= pendingcnt [i]);
		1745	#if EV_IDLE_ENABLE
		1746	assert (idleall >= 0);
		1747	assert (idlemax [i] >= idlecnt [i]);
		1748	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		1749	#endif
		1750	}
		1751
		1752	#if EV_FORK_ENABLE
		1753	assert (forkmax >= forkcnt);
		1754	array_verify (EV_A_ (W *)forks, forkcnt);
		1755	#endif
		1756
		1757	#if EV_ASYNC_ENABLE
		1758	assert (asyncmax >= 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)
		1771	# endif
		1772	#endif
1493	}	1773	}
1494	#endif	1774	#endif
1495		1775
1496	#if EV_MULTIPLICITY	1776	#if EV_MULTIPLICITY
1497	struct ev_loop *	1777	struct ev_loop *
…		…
1532	{	1812	{
1533	#if EV_MULTIPLICITY	1813	#if EV_MULTIPLICITY
1534	struct ev_loop *loop = ev_default_loop_ptr;	1814	struct ev_loop *loop = ev_default_loop_ptr;
1535	#endif	1815	#endif
1536		1816
		1817	ev_default_loop_ptr = 0;
		1818
1537	#ifndef _WIN32	1819	#ifndef _WIN32
1538	ev_ref (EV_A); /* child watcher */	1820	ev_ref (EV_A); /* child watcher */
1539	ev_signal_stop (EV_A_ &childev);	1821	ev_signal_stop (EV_A_ &childev);
1540	#endif	1822	#endif
1541		1823
…		…
1547	{	1829	{
1548	#if EV_MULTIPLICITY	1830	#if EV_MULTIPLICITY
1549	struct ev_loop *loop = ev_default_loop_ptr;	1831	struct ev_loop *loop = ev_default_loop_ptr;
1550	#endif	1832	#endif
1551		1833
1552	if (backend)
1553	postfork = 1; /* must be in line with ev_loop_fork */	1834	postfork = 1; /* must be in line with ev_loop_fork */
1554	}	1835	}
1555		1836
1556	/*****************************************************************************/	1837	/*****************************************************************************/
1557		1838
1558	void	1839	void
1559	ev_invoke (EV_P_ void *w, int revents)	1840	ev_invoke (EV_P_ void *w, int revents)
1560	{	1841	{
1561	EV_CB_INVOKE ((W)w, revents);	1842	EV_CB_INVOKE ((W)w, revents);
1562	}	1843	}
1563		1844
1564	void inline_speed	1845	unsigned int
1565	call_pending (EV_P)	1846	ev_pending_count (EV_P)
		1847	{
		1848	int pri;
		1849	unsigned int count = 0;
		1850
		1851	for (pri = NUMPRI; pri--; )
		1852	count += pendingcnt [pri];
		1853
		1854	return count;
		1855	}
		1856
		1857	void noinline
		1858	ev_invoke_pending (EV_P)
1566	{	1859	{
1567	int pri;	1860	int pri;
1568		1861
1569	for (pri = NUMPRI; pri--; )	1862	for (pri = NUMPRI; pri--; )
1570	while (pendingcnt [pri])	1863	while (pendingcnt [pri])
1571	{	1864	{
1572	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1865	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1573		1866
1574	if (expect_true (p->w))
1575	{
1576	/*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 */
1577		1869
1578	p->w->pending = 0;	1870	p->w->pending = 0;
1579	EV_CB_INVOKE (p->w, p->events);	1871	EV_CB_INVOKE (p->w, p->events);
1580	}	1872	EV_FREQUENT_CHECK;
1581	}	1873	}
1582	}	1874	}
1583		1875
1584	#if EV_IDLE_ENABLE	1876	#if EV_IDLE_ENABLE
1585	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
1586	idle_reify (EV_P)	1880	idle_reify (EV_P)
1587	{	1881	{
1588	if (expect_false (idleall))	1882	if (expect_false (idleall))
1589	{	1883	{
1590	int pri;	1884	int pri;
…		…
1602	}	1896	}
1603	}	1897	}
1604	}	1898	}
1605	#endif	1899	#endif
1606		1900
1607	void inline_size	1901	/* make timers pending */
		1902	inline_size void
1608	timers_reify (EV_P)	1903	timers_reify (EV_P)
1609	{	1904	{
		1905	EV_FREQUENT_CHECK;
		1906
1610	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	1907	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1611	{	1908	{
1612	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	1909	do
1613
1614	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1615
1616	/* first reschedule or stop timer */
1617	if (w->repeat)
1618	{	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	{
1619	ev_at (w) += w->repeat;	1918	ev_at (w) += w->repeat;
1620	if (ev_at (w) < mn_now)	1919	if (ev_at (w) < mn_now)
1621	ev_at (w) = mn_now;	1920	ev_at (w) = mn_now;
1622		1921
1623	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.));
1624		1923
1625	ANHE_at_set (timers [HEAP0]);	1924	ANHE_at_cache (timers [HEAP0]);
1626	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);
1627	}	1932	}
1628	else	1933	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1629	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1630		1934
1631	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1935	feed_reverse_done (EV_A_ EV_TIMEOUT);
1632	}	1936	}
1633	}	1937	}
1634		1938
1635	#if EV_PERIODIC_ENABLE	1939	#if EV_PERIODIC_ENABLE
1636	void inline_size	1940	/* make periodics pending */
		1941	inline_size void
1637	periodics_reify (EV_P)	1942	periodics_reify (EV_P)
1638	{	1943	{
		1944	EV_FREQUENT_CHECK;
		1945
1639	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	1946	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1640	{	1947	{
1641	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	1948	int feed_count = 0;
1642		1949
1643	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	1950	do
1644
1645	/* first reschedule or stop timer */
1646	if (w->reschedule_cb)
1647	{	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	{
1648	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1959	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1649		1960
1650	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));
1651		1962
1652	ANHE_at_set (periodics [HEAP0]);	1963	ANHE_at_cache (periodics [HEAP0]);
1653	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
		1988	EV_FREQUENT_CHECK;
		1989	feed_reverse (EV_A_ (W)w);
1654	}	1990	}
1655	else if (w->interval)	1991	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1656	{
1657	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1658	/* if next trigger time is not sufficiently in the future, put it there */
1659	/* this might happen because of floating point inexactness */
1660	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1661	{
1662	ev_at (w) += w->interval;
1663		1992
1664	/* if interval is unreasonably low we might still have a time in the past */
1665	/* so correct this. this will make the periodic very inexact, but the user */
1666	/* has effectively asked to get triggered more often than possible */
1667	if (ev_at (w) < ev_rt_now)
1668	ev_at (w) = ev_rt_now;
1669	}
1670
1671	ANHE_at_set (periodics [HEAP0]);
1672	downheap (periodics, periodiccnt, HEAP0);
1673	}
1674	else
1675	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1676
1677	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1993	feed_reverse_done (EV_A_ EV_PERIODIC);
1678	}	1994	}
1679	}	1995	}
1680		1996
		1997	/* simply recalculate all periodics */
		1998	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1681	static void noinline	1999	static void noinline
1682	periodics_reschedule (EV_P)	2000	periodics_reschedule (EV_P)
1683	{	2001	{
1684	int i;	2002	int i;
1685		2003
…		…
1691	if (w->reschedule_cb)	2009	if (w->reschedule_cb)
1692	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2010	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1693	else if (w->interval)	2011	else if (w->interval)
1694	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2012	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1695		2013
1696	ANHE_at_set (periodics [i]);	2014	ANHE_at_cache (periodics [i]);
1697	}	2015	}
1698		2016
1699	/* we don't use floyds algorithm, uphead is simpler and is more cache-efficient */	2017	reheap (periodics, periodiccnt);
1700	/* also, this is easy and corretc for both 2-heaps and 4-heaps */	2018	}
		2019	#endif
		2020
		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
1701	for (i = 0; i < periodiccnt; ++i)	2027	for (i = 0; i < timercnt; ++i)
1702	upheap (periodics, i + HEAP0);	2028	{
		2029	ANHE *he = timers + i + HEAP0;
		2030	ANHE_w (*he)->at += adjust;
		2031	ANHE_at_cache (*he);
		2032	}
1703	}	2033	}
1704	#endif
1705		2034
1706	void inline_speed	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
1707	time_update (EV_P_ ev_tstamp max_block)	2038	time_update (EV_P_ ev_tstamp max_block)
1708	{	2039	{
1709	int i;
1710
1711	#if EV_USE_MONOTONIC	2040	#if EV_USE_MONOTONIC
1712	if (expect_true (have_monotonic))	2041	if (expect_true (have_monotonic))
1713	{	2042	{
		2043	int i;
1714	ev_tstamp odiff = rtmn_diff;	2044	ev_tstamp odiff = rtmn_diff;
1715		2045
1716	mn_now = get_clock ();	2046	mn_now = get_clock ();
1717		2047
1718	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2048	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1744	ev_rt_now = ev_time ();	2074	ev_rt_now = ev_time ();
1745	mn_now = get_clock ();	2075	mn_now = get_clock ();
1746	now_floor = mn_now;	2076	now_floor = mn_now;
1747	}	2077	}
1748		2078
		2079	/* no timer adjustment, as the monotonic clock doesn't jump */
		2080	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1749	# if EV_PERIODIC_ENABLE	2081	# if EV_PERIODIC_ENABLE
1750	periodics_reschedule (EV_A);	2082	periodics_reschedule (EV_A);
1751	# endif	2083	# endif
1752	/* no timer adjustment, as the monotonic clock doesn't jump */
1753	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1754	}	2084	}
1755	else	2085	else
1756	#endif	2086	#endif
1757	{	2087	{
1758	ev_rt_now = ev_time ();	2088	ev_rt_now = ev_time ();
1759		2089
1760	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))
1761	{	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);
1762	#if EV_PERIODIC_ENABLE	2094	#if EV_PERIODIC_ENABLE
1763	periodics_reschedule (EV_A);	2095	periodics_reschedule (EV_A);
1764	#endif	2096	#endif
1765	/* adjust timers. this is easy, as the offset is the same for all of them */
1766	for (i = 0; i < timercnt; ++i)
1767	{
1768	ANHE *he = timers + i + HEAP0;
1769	ANHE_w (*he)->at += ev_rt_now - mn_now;
1770	ANHE_at_set (*he);
1771	}
1772	}	2097	}
1773		2098
1774	mn_now = ev_rt_now;	2099	mn_now = ev_rt_now;
1775	}	2100	}
1776	}	2101	}
1777		2102
1778	void	2103	void
1779	ev_ref (EV_P)
1780	{
1781	++activecnt;
1782	}
1783
1784	void
1785	ev_unref (EV_P)
1786	{
1787	--activecnt;
1788	}
1789
1790	static int loop_done;
1791
1792	void
1793	ev_loop (EV_P_ int flags)	2104	ev_loop (EV_P_ int flags)
1794	{	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
1795	loop_done = EVUNLOOP_CANCEL;	2112	loop_done = EVUNLOOP_CANCEL;
1796		2113
1797	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 */
1798		2115
1799	do	2116	do
1800	{	2117	{
		2118	#if EV_VERIFY >= 2
		2119	ev_loop_verify (EV_A);
		2120	#endif
		2121
1801	#ifndef _WIN32	2122	#ifndef _WIN32
1802	if (expect_false (curpid)) /* penalise the forking check even more */	2123	if (expect_false (curpid)) /* penalise the forking check even more */
1803	if (expect_false (getpid () != curpid))	2124	if (expect_false (getpid () != curpid))
1804	{	2125	{
1805	curpid = getpid ();	2126	curpid = getpid ();
…		…
1811	/* we might have forked, so queue fork handlers */	2132	/* we might have forked, so queue fork handlers */
1812	if (expect_false (postfork))	2133	if (expect_false (postfork))
1813	if (forkcnt)	2134	if (forkcnt)
1814	{	2135	{
1815	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2136	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1816	call_pending (EV_A);	2137	EV_INVOKE_PENDING;
1817	}	2138	}
1818	#endif	2139	#endif
1819		2140
1820	/* queue prepare watchers (and execute them) */	2141	/* queue prepare watchers (and execute them) */
1821	if (expect_false (preparecnt))	2142	if (expect_false (preparecnt))
1822	{	2143	{
1823	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2144	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1824	call_pending (EV_A);	2145	EV_INVOKE_PENDING;
1825	}	2146	}
1826		2147
1827	if (expect_false (!activecnt))	2148	if (expect_false (loop_done))
1828	break;	2149	break;
1829		2150
1830	/* we might have forked, so reify kernel state if necessary */	2151	/* we might have forked, so reify kernel state if necessary */
1831	if (expect_false (postfork))	2152	if (expect_false (postfork))
1832	loop_fork (EV_A);	2153	loop_fork (EV_A);
…		…
1839	ev_tstamp waittime = 0.;	2160	ev_tstamp waittime = 0.;
1840	ev_tstamp sleeptime = 0.;	2161	ev_tstamp sleeptime = 0.;
1841		2162
1842	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2163	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1843	{	2164	{
		2165	/* remember old timestamp for io_blocktime calculation */
		2166	ev_tstamp prev_mn_now = mn_now;
		2167
1844	/* update time to cancel out callback processing overhead */	2168	/* update time to cancel out callback processing overhead */
1845	time_update (EV_A_ 1e100);	2169	time_update (EV_A_ 1e100);
1846		2170
1847	waittime = MAX_BLOCKTIME;	2171	waittime = MAX_BLOCKTIME;
1848		2172
…		…
1858	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;
1859	if (waittime > to) waittime = to;	2183	if (waittime > to) waittime = to;
1860	}	2184	}
1861	#endif	2185	#endif
1862		2186
		2187	/* don't let timeouts decrease the waittime below timeout_blocktime */
1863	if (expect_false (waittime < timeout_blocktime))	2188	if (expect_false (waittime < timeout_blocktime))
1864	waittime = timeout_blocktime;	2189	waittime = timeout_blocktime;
1865		2190
1866	sleeptime = waittime - backend_fudge;	2191	/* extra check because io_blocktime is commonly 0 */
1867
1868	if (expect_true (sleeptime > io_blocktime))	2192	if (expect_false (io_blocktime))
1869	sleeptime = io_blocktime;
1870
1871	if (sleeptime)
1872	{	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	{
1873	ev_sleep (sleeptime);	2201	ev_sleep (sleeptime);
1874	waittime -= sleeptime;	2202	waittime -= sleeptime;
		2203	}
1875	}	2204	}
1876	}	2205	}
1877		2206
		2207	#if EV_MINIMAL < 2
1878	++loop_count;	2208	++loop_count;
		2209	#endif
		2210	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1879	backend_poll (EV_A_ waittime);	2211	backend_poll (EV_A_ waittime);
		2212	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1880		2213
1881	/* update ev_rt_now, do magic */	2214	/* update ev_rt_now, do magic */
1882	time_update (EV_A_ waittime + sleeptime);	2215	time_update (EV_A_ waittime + sleeptime);
1883	}	2216	}
1884		2217
…		…
1895		2228
1896	/* queue check watchers, to be executed first */	2229	/* queue check watchers, to be executed first */
1897	if (expect_false (checkcnt))	2230	if (expect_false (checkcnt))
1898	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2231	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1899		2232
1900	call_pending (EV_A);	2233	EV_INVOKE_PENDING;
1901	}	2234	}
1902	while (expect_true (	2235	while (expect_true (
1903	activecnt	2236	activecnt
1904	&& !loop_done	2237	&& !loop_done
1905	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2238	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1906	));	2239	));
1907		2240
1908	if (loop_done == EVUNLOOP_ONE)	2241	if (loop_done == EVUNLOOP_ONE)
1909	loop_done = EVUNLOOP_CANCEL;	2242	loop_done = EVUNLOOP_CANCEL;
		2243
		2244	#if EV_MINIMAL < 2
		2245	--loop_depth;
		2246	#endif
1910	}	2247	}
1911		2248
1912	void	2249	void
1913	ev_unloop (EV_P_ int how)	2250	ev_unloop (EV_P_ int how)
1914	{	2251	{
1915	loop_done = how;	2252	loop_done = how;
1916	}	2253	}
1917		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
1918	/*****************************************************************************/	2292	/*****************************************************************************/
		2293	/* singly-linked list management, used when the expected list length is short */
1919		2294
1920	void inline_size	2295	inline_size void
1921	wlist_add (WL *head, WL elem)	2296	wlist_add (WL *head, WL elem)
1922	{	2297	{
1923	elem->next = *head;	2298	elem->next = *head;
1924	*head = elem;	2299	*head = elem;
1925	}	2300	}
1926		2301
1927	void inline_size	2302	inline_size void
1928	wlist_del (WL *head, WL elem)	2303	wlist_del (WL *head, WL elem)
1929	{	2304	{
1930	while (*head)	2305	while (*head)
1931	{	2306	{
1932	if (*head == elem)	2307	if (*head == elem)
…		…
1937		2312
1938	head = &(*head)->next;	2313	head = &(*head)->next;
1939	}	2314	}
1940	}	2315	}
1941		2316
1942	void inline_speed	2317	/* internal, faster, version of ev_clear_pending */
		2318	inline_speed void
1943	clear_pending (EV_P_ W w)	2319	clear_pending (EV_P_ W w)
1944	{	2320	{
1945	if (w->pending)	2321	if (w->pending)
1946	{	2322	{
1947	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2323	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1948	w->pending = 0;	2324	w->pending = 0;
1949	}	2325	}
1950	}	2326	}
1951		2327
1952	int	2328	int
…		…
1956	int pending = w_->pending;	2332	int pending = w_->pending;
1957		2333
1958	if (expect_true (pending))	2334	if (expect_true (pending))
1959	{	2335	{
1960	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2336	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2337	p->w = (W)&pending_w;
1961	w_->pending = 0;	2338	w_->pending = 0;
1962	p->w = 0;
1963	return p->events;	2339	return p->events;
1964	}	2340	}
1965	else	2341	else
1966	return 0;	2342	return 0;
1967	}	2343	}
1968		2344
1969	void inline_size	2345	inline_size void
1970	pri_adjust (EV_P_ W w)	2346	pri_adjust (EV_P_ W w)
1971	{	2347	{
1972	int pri = w->priority;	2348	int pri = ev_priority (w);
1973	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2349	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1974	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2350	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1975	w->priority = pri;	2351	ev_set_priority (w, pri);
1976	}	2352	}
1977		2353
1978	void inline_speed	2354	inline_speed void
1979	ev_start (EV_P_ W w, int active)	2355	ev_start (EV_P_ W w, int active)
1980	{	2356	{
1981	pri_adjust (EV_A_ w);	2357	pri_adjust (EV_A_ w);
1982	w->active = active;	2358	w->active = active;
1983	ev_ref (EV_A);	2359	ev_ref (EV_A);
1984	}	2360	}
1985		2361
1986	void inline_size	2362	inline_size void
1987	ev_stop (EV_P_ W w)	2363	ev_stop (EV_P_ W w)
1988	{	2364	{
1989	ev_unref (EV_A);	2365	ev_unref (EV_A);
1990	w->active = 0;	2366	w->active = 0;
1991	}	2367	}
…		…
1998	int fd = w->fd;	2374	int fd = w->fd;
1999		2375
2000	if (expect_false (ev_is_active (w)))	2376	if (expect_false (ev_is_active (w)))
2001	return;	2377	return;
2002		2378
2003	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))));
		2381
		2382	EV_FREQUENT_CHECK;
2004		2383
2005	ev_start (EV_A_ (W)w, 1);	2384	ev_start (EV_A_ (W)w, 1);
2006	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2385	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2007	wlist_add (&anfds[fd].head, (WL)w);	2386	wlist_add (&anfds[fd].head, (WL)w);
2008		2387
2009	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2388	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2010	w->events &= ~EV_IOFDSET;	2389	w->events &= ~EV__IOFDSET;
		2390
		2391	EV_FREQUENT_CHECK;
2011	}	2392	}
2012		2393
2013	void noinline	2394	void noinline
2014	ev_io_stop (EV_P_ ev_io *w)	2395	ev_io_stop (EV_P_ ev_io *w)
2015	{	2396	{
2016	clear_pending (EV_A_ (W)w);	2397	clear_pending (EV_A_ (W)w);
2017	if (expect_false (!ev_is_active (w)))	2398	if (expect_false (!ev_is_active (w)))
2018	return;	2399	return;
2019		2400
2020	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));
		2402
		2403	EV_FREQUENT_CHECK;
2021		2404
2022	wlist_del (&anfds[w->fd].head, (WL)w);	2405	wlist_del (&anfds[w->fd].head, (WL)w);
2023	ev_stop (EV_A_ (W)w);	2406	ev_stop (EV_A_ (W)w);
2024		2407
2025	fd_change (EV_A_ w->fd, 1);	2408	fd_change (EV_A_ w->fd, 1);
		2409
		2410	EV_FREQUENT_CHECK;
2026	}	2411	}
2027		2412
2028	void noinline	2413	void noinline
2029	ev_timer_start (EV_P_ ev_timer *w)	2414	ev_timer_start (EV_P_ ev_timer *w)
2030	{	2415	{
2031	if (expect_false (ev_is_active (w)))	2416	if (expect_false (ev_is_active (w)))
2032	return;	2417	return;
2033		2418
2034	ev_at (w) += mn_now;	2419	ev_at (w) += mn_now;
2035		2420
2036	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.));
2037		2422
		2423	EV_FREQUENT_CHECK;
		2424
		2425	++timercnt;
2038	ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1);	2426	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2039	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);	2427	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
2040	ANHE_w (timers [ev_active (w)]) = (WT)w;	2428	ANHE_w (timers [ev_active (w)]) = (WT)w;
2041	ANHE_at_set (timers [ev_active (w)]);	2429	ANHE_at_cache (timers [ev_active (w)]);
2042	upheap (timers, ev_active (w));	2430	upheap (timers, ev_active (w));
2043		2431
		2432	EV_FREQUENT_CHECK;
		2433
2044	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2434	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2045	}	2435	}
2046		2436
2047	void noinline	2437	void noinline
2048	ev_timer_stop (EV_P_ ev_timer *w)	2438	ev_timer_stop (EV_P_ ev_timer *w)
2049	{	2439	{
2050	clear_pending (EV_A_ (W)w);	2440	clear_pending (EV_A_ (W)w);
2051	if (expect_false (!ev_is_active (w)))	2441	if (expect_false (!ev_is_active (w)))
2052	return;	2442	return;
2053		2443
		2444	EV_FREQUENT_CHECK;
		2445
2054	{	2446	{
2055	int active = ev_active (w);	2447	int active = ev_active (w);
2056		2448
2057	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2449	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2058		2450
		2451	--timercnt;
		2452
2059	if (expect_true (active < timercnt + HEAP0 - 1))	2453	if (expect_true (active < timercnt + HEAP0))
2060	{	2454	{
2061	timers [active] = timers [timercnt + HEAP0 - 1];	2455	timers [active] = timers [timercnt + HEAP0];
2062	adjustheap (timers, timercnt, active);	2456	adjustheap (timers, timercnt, active);
2063	}	2457	}
2064
2065	--timercnt;
2066	}	2458	}
		2459
		2460	EV_FREQUENT_CHECK;
2067		2461
2068	ev_at (w) -= mn_now;	2462	ev_at (w) -= mn_now;
2069		2463
2070	ev_stop (EV_A_ (W)w);	2464	ev_stop (EV_A_ (W)w);
2071	}	2465	}
2072		2466
2073	void noinline	2467	void noinline
2074	ev_timer_again (EV_P_ ev_timer *w)	2468	ev_timer_again (EV_P_ ev_timer *w)
2075	{	2469	{
		2470	EV_FREQUENT_CHECK;
		2471
2076	if (ev_is_active (w))	2472	if (ev_is_active (w))
2077	{	2473	{
2078	if (w->repeat)	2474	if (w->repeat)
2079	{	2475	{
2080	ev_at (w) = mn_now + w->repeat;	2476	ev_at (w) = mn_now + w->repeat;
2081	ANHE_at_set (timers [ev_active (w)]);	2477	ANHE_at_cache (timers [ev_active (w)]);
2082	adjustheap (timers, timercnt, ev_active (w));	2478	adjustheap (timers, timercnt, ev_active (w));
2083	}	2479	}
2084	else	2480	else
2085	ev_timer_stop (EV_A_ w);	2481	ev_timer_stop (EV_A_ w);
2086	}	2482	}
2087	else if (w->repeat)	2483	else if (w->repeat)
2088	{	2484	{
2089	ev_at (w) = w->repeat;	2485	ev_at (w) = w->repeat;
2090	ev_timer_start (EV_A_ w);	2486	ev_timer_start (EV_A_ w);
2091	}	2487	}
		2488
		2489	EV_FREQUENT_CHECK;
		2490	}
		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.);
2092	}	2496	}
2093		2497
2094	#if EV_PERIODIC_ENABLE	2498	#if EV_PERIODIC_ENABLE
2095	void noinline	2499	void noinline
2096	ev_periodic_start (EV_P_ ev_periodic *w)	2500	ev_periodic_start (EV_P_ ev_periodic *w)
…		…
2100		2504
2101	if (w->reschedule_cb)	2505	if (w->reschedule_cb)
2102	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2506	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2103	else if (w->interval)	2507	else if (w->interval)
2104	{	2508	{
2105	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.));
2106	/* 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 */
2107	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;
2108	}	2512	}
2109	else	2513	else
2110	ev_at (w) = w->offset;	2514	ev_at (w) = w->offset;
2111		2515
		2516	EV_FREQUENT_CHECK;
		2517
		2518	++periodiccnt;
2112	ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1);	2519	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2113	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);	2520	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2114	ANHE_w (periodics [ev_active (w)]) = (WT)w;	2521	ANHE_w (periodics [ev_active (w)]) = (WT)w;
2115	ANHE_at_set (periodics [ev_active (w)]);	2522	ANHE_at_cache (periodics [ev_active (w)]);
2116	upheap (periodics, ev_active (w));	2523	upheap (periodics, ev_active (w));
2117		2524
		2525	EV_FREQUENT_CHECK;
		2526
2118	/*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));*/
2119	}	2528	}
2120		2529
2121	void noinline	2530	void noinline
2122	ev_periodic_stop (EV_P_ ev_periodic *w)	2531	ev_periodic_stop (EV_P_ ev_periodic *w)
2123	{	2532	{
2124	clear_pending (EV_A_ (W)w);	2533	clear_pending (EV_A_ (W)w);
2125	if (expect_false (!ev_is_active (w)))	2534	if (expect_false (!ev_is_active (w)))
2126	return;	2535	return;
2127		2536
		2537	EV_FREQUENT_CHECK;
		2538
2128	{	2539	{
2129	int active = ev_active (w);	2540	int active = ev_active (w);
2130		2541
2131	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2542	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2132		2543
		2544	--periodiccnt;
		2545
2133	if (expect_true (active < periodiccnt + HEAP0 - 1))	2546	if (expect_true (active < periodiccnt + HEAP0))
2134	{	2547	{
2135	periodics [active] = periodics [periodiccnt + HEAP0 - 1];	2548	periodics [active] = periodics [periodiccnt + HEAP0];
2136	adjustheap (periodics, periodiccnt, active);	2549	adjustheap (periodics, periodiccnt, active);
2137	}	2550	}
2138
2139	--periodiccnt;
2140	}	2551	}
		2552
		2553	EV_FREQUENT_CHECK;
2141		2554
2142	ev_stop (EV_A_ (W)w);	2555	ev_stop (EV_A_ (W)w);
2143	}	2556	}
2144		2557
2145	void noinline	2558	void noinline
…		…
2157		2570
2158	void noinline	2571	void noinline
2159	ev_signal_start (EV_P_ ev_signal *w)	2572	ev_signal_start (EV_P_ ev_signal *w)
2160	{	2573	{
2161	#if EV_MULTIPLICITY	2574	#if EV_MULTIPLICITY
2162	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));
2163	#endif	2576	#endif
2164	if (expect_false (ev_is_active (w)))	2577	if (expect_false (ev_is_active (w)))
2165	return;	2578	return;
2166		2579
2167	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));
2168		2581
2169	evpipe_init (EV_A);	2582	evpipe_init (EV_A);
		2583
		2584	EV_FREQUENT_CHECK;
2170		2585
2171	{	2586	{
2172	#ifndef _WIN32	2587	#ifndef _WIN32
2173	sigset_t full, prev;	2588	sigset_t full, prev;
2174	sigfillset (&full);	2589	sigfillset (&full);
2175	sigprocmask (SIG_SETMASK, &full, &prev);	2590	sigprocmask (SIG_SETMASK, &full, &prev);
2176	#endif	2591	#endif
2177		2592
2178	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2593	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2179		2594
2180	#ifndef _WIN32	2595	#ifndef _WIN32
2181	sigprocmask (SIG_SETMASK, &prev, 0);	2596	sigprocmask (SIG_SETMASK, &prev, 0);
2182	#endif	2597	#endif
2183	}	2598	}
…		…
2188	if (!((WL)w)->next)	2603	if (!((WL)w)->next)
2189	{	2604	{
2190	#if _WIN32	2605	#if _WIN32
2191	signal (w->signum, ev_sighandler);	2606	signal (w->signum, ev_sighandler);
2192	#else	2607	#else
2193	struct sigaction sa;	2608	struct sigaction sa = { };
2194	sa.sa_handler = ev_sighandler;	2609	sa.sa_handler = ev_sighandler;
2195	sigfillset (&sa.sa_mask);	2610	sigfillset (&sa.sa_mask);
2196	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 */
2197	sigaction (w->signum, &sa, 0);	2612	sigaction (w->signum, &sa, 0);
2198	#endif	2613	#endif
2199	}	2614	}
		2615
		2616	EV_FREQUENT_CHECK;
2200	}	2617	}
2201		2618
2202	void noinline	2619	void noinline
2203	ev_signal_stop (EV_P_ ev_signal *w)	2620	ev_signal_stop (EV_P_ ev_signal *w)
2204	{	2621	{
2205	clear_pending (EV_A_ (W)w);	2622	clear_pending (EV_A_ (W)w);
2206	if (expect_false (!ev_is_active (w)))	2623	if (expect_false (!ev_is_active (w)))
2207	return;	2624	return;
2208		2625
		2626	EV_FREQUENT_CHECK;
		2627
2209	wlist_del (&signals [w->signum - 1].head, (WL)w);	2628	wlist_del (&signals [w->signum - 1].head, (WL)w);
2210	ev_stop (EV_A_ (W)w);	2629	ev_stop (EV_A_ (W)w);
2211		2630
2212	if (!signals [w->signum - 1].head)	2631	if (!signals [w->signum - 1].head)
2213	signal (w->signum, SIG_DFL);	2632	signal (w->signum, SIG_DFL);
		2633
		2634	EV_FREQUENT_CHECK;
2214	}	2635	}
2215		2636
2216	void	2637	void
2217	ev_child_start (EV_P_ ev_child *w)	2638	ev_child_start (EV_P_ ev_child *w)
2218	{	2639	{
2219	#if EV_MULTIPLICITY	2640	#if EV_MULTIPLICITY
2220	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));
2221	#endif	2642	#endif
2222	if (expect_false (ev_is_active (w)))	2643	if (expect_false (ev_is_active (w)))
2223	return;	2644	return;
2224		2645
		2646	EV_FREQUENT_CHECK;
		2647
2225	ev_start (EV_A_ (W)w, 1);	2648	ev_start (EV_A_ (W)w, 1);
2226	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2649	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2650
		2651	EV_FREQUENT_CHECK;
2227	}	2652	}
2228		2653
2229	void	2654	void
2230	ev_child_stop (EV_P_ ev_child *w)	2655	ev_child_stop (EV_P_ ev_child *w)
2231	{	2656	{
2232	clear_pending (EV_A_ (W)w);	2657	clear_pending (EV_A_ (W)w);
2233	if (expect_false (!ev_is_active (w)))	2658	if (expect_false (!ev_is_active (w)))
2234	return;	2659	return;
2235		2660
		2661	EV_FREQUENT_CHECK;
		2662
2236	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2663	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2237	ev_stop (EV_A_ (W)w);	2664	ev_stop (EV_A_ (W)w);
		2665
		2666	EV_FREQUENT_CHECK;
2238	}	2667	}
2239		2668
2240	#if EV_STAT_ENABLE	2669	#if EV_STAT_ENABLE
2241		2670
2242	# ifdef _WIN32	2671	# ifdef _WIN32
2243	# undef lstat	2672	# undef lstat
2244	# define lstat(a,b) _stati64 (a,b)	2673	# define lstat(a,b) _stati64 (a,b)
2245	# endif	2674	# endif
2246		2675
2247	#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 */
2248	#define MIN_STAT_INTERVAL 0.1074891	2678	#define MIN_STAT_INTERVAL 0.1074891
2249		2679
2250	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);
2251		2681
2252	#if EV_USE_INOTIFY	2682	#if EV_USE_INOTIFY
2253	# define EV_INOTIFY_BUFSIZE 8192	2683	# define EV_INOTIFY_BUFSIZE 8192
…		…
2257	{	2687	{
2258	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);
2259		2689
2260	if (w->wd < 0)	2690	if (w->wd < 0)
2261	{	2691	{
		2692	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2262	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 */
2263		2694
2264	/* monitor some parent directory for speedup hints */	2695	/* monitor some parent directory for speedup hints */
2265	/* note that exceeding the hardcoded limit is not a correctness issue, */	2696	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2266	/* but an efficiency issue only */	2697	/* but an efficiency issue only */
2267	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2698	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2268	{	2699	{
2269	char path [4096];	2700	char path [4096];
2270	strcpy (path, w->path);	2701	strcpy (path, w->path);
…		…
2274	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2705	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2275	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2706	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2276		2707
2277	char *pend = strrchr (path, '/');	2708	char *pend = strrchr (path, '/');
2278		2709
2279	if (!pend)	2710	if (!pend || pend == path)
2280	break; /* whoops, no '/', complain to your admin */	2711	break;
2281		2712
2282	*pend = 0;	2713	*pend = 0;
2283	w->wd = inotify_add_watch (fs_fd, path, mask);	2714	w->wd = inotify_add_watch (fs_fd, path, mask);
2284	}	2715	}
2285	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2716	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2286	}	2717	}
2287	}	2718	}
2288	else
2289	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2290		2719
2291	if (w->wd >= 0)	2720	if (w->wd >= 0)
		2721	{
2292	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	}
2293	}	2741	}
2294		2742
2295	static void noinline	2743	static void noinline
2296	infy_del (EV_P_ ev_stat *w)	2744	infy_del (EV_P_ ev_stat *w)
2297	{	2745	{
…		…
2311		2759
2312	static void noinline	2760	static void noinline
2313	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)
2314	{	2762	{
2315	if (slot < 0)	2763	if (slot < 0)
2316	/* overflow, need to check for all hahs slots */	2764	/* overflow, need to check for all hash slots */
2317	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2765	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2318	infy_wd (EV_A_ slot, wd, ev);	2766	infy_wd (EV_A_ slot, wd, ev);
2319	else	2767	else
2320	{	2768	{
2321	WL w_;	2769	WL w_;
…		…
2327		2775
2328	if (w->wd == wd || wd == -1)	2776	if (w->wd == wd || wd == -1)
2329	{	2777	{
2330	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2778	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2331	{	2779	{
		2780	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2332	w->wd = -1;	2781	w->wd = -1;
2333	infy_add (EV_A_ w); /* re-add, no matter what */	2782	infy_add (EV_A_ w); /* re-add, no matter what */
2334	}	2783	}
2335		2784
2336	stat_timer_cb (EV_A_ &w->timer, 0);	2785	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2349		2798
2350	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)
2351	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2800	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2352	}	2801	}
2353		2802
2354	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
2355	infy_init (EV_P)	2827	infy_init (EV_P)
2356	{	2828	{
2357	if (fs_fd != -2)	2829	if (fs_fd != -2)
2358	return;	2830	return;
		2831
		2832	fs_fd = -1;
		2833
		2834	check_2625 (EV_A);
2359		2835
2360	fs_fd = inotify_init ();	2836	fs_fd = inotify_init ();
2361		2837
2362	if (fs_fd >= 0)	2838	if (fs_fd >= 0)
2363	{	2839	{
…		…
2365	ev_set_priority (&fs_w, EV_MAXPRI);	2841	ev_set_priority (&fs_w, EV_MAXPRI);
2366	ev_io_start (EV_A_ &fs_w);	2842	ev_io_start (EV_A_ &fs_w);
2367	}	2843	}
2368	}	2844	}
2369		2845
2370	void inline_size	2846	inline_size void
2371	infy_fork (EV_P)	2847	infy_fork (EV_P)
2372	{	2848	{
2373	int slot;	2849	int slot;
2374		2850
2375	if (fs_fd < 0)	2851	if (fs_fd < 0)
…		…
2391	w->wd = -1;	2867	w->wd = -1;
2392		2868
2393	if (fs_fd >= 0)	2869	if (fs_fd >= 0)
2394	infy_add (EV_A_ w); /* re-add, no matter what */	2870	infy_add (EV_A_ w); /* re-add, no matter what */
2395	else	2871	else
2396	ev_timer_start (EV_A_ &w->timer);	2872	ev_timer_again (EV_A_ &w->timer);
2397	}	2873	}
2398
2399	}	2874	}
2400	}	2875	}
2401		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)
2402	#endif	2883	#endif
2403		2884
2404	void	2885	void
2405	ev_stat_stat (EV_P_ ev_stat *w)	2886	ev_stat_stat (EV_P_ ev_stat *w)
2406	{	2887	{
…		…
2433	|| w->prev.st_atime != w->attr.st_atime	2914	|| w->prev.st_atime != w->attr.st_atime
2434	|| w->prev.st_mtime != w->attr.st_mtime	2915	|| w->prev.st_mtime != w->attr.st_mtime
2435	|| w->prev.st_ctime != w->attr.st_ctime	2916	|| w->prev.st_ctime != w->attr.st_ctime
2436	) {	2917	) {
2437	#if EV_USE_INOTIFY	2918	#if EV_USE_INOTIFY
		2919	if (fs_fd >= 0)
		2920	{
2438	infy_del (EV_A_ w);	2921	infy_del (EV_A_ w);
2439	infy_add (EV_A_ w);	2922	infy_add (EV_A_ w);
2440	ev_stat_stat (EV_A_ w); /* avoid race... */	2923	ev_stat_stat (EV_A_ w); /* avoid race... */
		2924	}
2441	#endif	2925	#endif
2442		2926
2443	ev_feed_event (EV_A_ w, EV_STAT);	2927	ev_feed_event (EV_A_ w, EV_STAT);
2444	}	2928	}
2445	}	2929	}
…		…
2448	ev_stat_start (EV_P_ ev_stat *w)	2932	ev_stat_start (EV_P_ ev_stat *w)
2449	{	2933	{
2450	if (expect_false (ev_is_active (w)))	2934	if (expect_false (ev_is_active (w)))
2451	return;	2935	return;
2452		2936
2453	/* since we use memcmp, we need to clear any padding data etc. */
2454	memset (&w->prev, 0, sizeof (ev_statdata));
2455	memset (&w->attr, 0, sizeof (ev_statdata));
2456
2457	ev_stat_stat (EV_A_ w);	2937	ev_stat_stat (EV_A_ w);
2458		2938
		2939	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2459	if (w->interval < MIN_STAT_INTERVAL)	2940	w->interval = MIN_STAT_INTERVAL;
2460	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2461		2941
2462	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);
2463	ev_set_priority (&w->timer, ev_priority (w));	2943	ev_set_priority (&w->timer, ev_priority (w));
2464		2944
2465	#if EV_USE_INOTIFY	2945	#if EV_USE_INOTIFY
2466	infy_init (EV_A);	2946	infy_init (EV_A);
2467		2947
2468	if (fs_fd >= 0)	2948	if (fs_fd >= 0)
2469	infy_add (EV_A_ w);	2949	infy_add (EV_A_ w);
2470	else	2950	else
2471	#endif	2951	#endif
2472	ev_timer_start (EV_A_ &w->timer);	2952	ev_timer_again (EV_A_ &w->timer);
2473		2953
2474	ev_start (EV_A_ (W)w, 1);	2954	ev_start (EV_A_ (W)w, 1);
		2955
		2956	EV_FREQUENT_CHECK;
2475	}	2957	}
2476		2958
2477	void	2959	void
2478	ev_stat_stop (EV_P_ ev_stat *w)	2960	ev_stat_stop (EV_P_ ev_stat *w)
2479	{	2961	{
2480	clear_pending (EV_A_ (W)w);	2962	clear_pending (EV_A_ (W)w);
2481	if (expect_false (!ev_is_active (w)))	2963	if (expect_false (!ev_is_active (w)))
2482	return;	2964	return;
2483		2965
		2966	EV_FREQUENT_CHECK;
		2967
2484	#if EV_USE_INOTIFY	2968	#if EV_USE_INOTIFY
2485	infy_del (EV_A_ w);	2969	infy_del (EV_A_ w);
2486	#endif	2970	#endif
2487	ev_timer_stop (EV_A_ &w->timer);	2971	ev_timer_stop (EV_A_ &w->timer);
2488		2972
2489	ev_stop (EV_A_ (W)w);	2973	ev_stop (EV_A_ (W)w);
		2974
		2975	EV_FREQUENT_CHECK;
2490	}	2976	}
2491	#endif	2977	#endif
2492		2978
2493	#if EV_IDLE_ENABLE	2979	#if EV_IDLE_ENABLE
2494	void	2980	void
…		…
2496	{	2982	{
2497	if (expect_false (ev_is_active (w)))	2983	if (expect_false (ev_is_active (w)))
2498	return;	2984	return;
2499		2985
2500	pri_adjust (EV_A_ (W)w);	2986	pri_adjust (EV_A_ (W)w);
		2987
		2988	EV_FREQUENT_CHECK;
2501		2989
2502	{	2990	{
2503	int active = ++idlecnt [ABSPRI (w)];	2991	int active = ++idlecnt [ABSPRI (w)];
2504		2992
2505	++idleall;	2993	++idleall;
2506	ev_start (EV_A_ (W)w, active);	2994	ev_start (EV_A_ (W)w, active);
2507		2995
2508	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	2996	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2509	idles [ABSPRI (w)][active - 1] = w;	2997	idles [ABSPRI (w)][active - 1] = w;
2510	}	2998	}
		2999
		3000	EV_FREQUENT_CHECK;
2511	}	3001	}
2512		3002
2513	void	3003	void
2514	ev_idle_stop (EV_P_ ev_idle *w)	3004	ev_idle_stop (EV_P_ ev_idle *w)
2515	{	3005	{
2516	clear_pending (EV_A_ (W)w);	3006	clear_pending (EV_A_ (W)w);
2517	if (expect_false (!ev_is_active (w)))	3007	if (expect_false (!ev_is_active (w)))
2518	return;	3008	return;
2519		3009
		3010	EV_FREQUENT_CHECK;
		3011
2520	{	3012	{
2521	int active = ev_active (w);	3013	int active = ev_active (w);
2522		3014
2523	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	3015	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2524	ev_active (idles [ABSPRI (w)][active - 1]) = active;	3016	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2525		3017
2526	ev_stop (EV_A_ (W)w);	3018	ev_stop (EV_A_ (W)w);
2527	--idleall;	3019	--idleall;
2528	}	3020	}
		3021
		3022	EV_FREQUENT_CHECK;
2529	}	3023	}
2530	#endif	3024	#endif
2531		3025
2532	void	3026	void
2533	ev_prepare_start (EV_P_ ev_prepare *w)	3027	ev_prepare_start (EV_P_ ev_prepare *w)
2534	{	3028	{
2535	if (expect_false (ev_is_active (w)))	3029	if (expect_false (ev_is_active (w)))
2536	return;	3030	return;
		3031
		3032	EV_FREQUENT_CHECK;
2537		3033
2538	ev_start (EV_A_ (W)w, ++preparecnt);	3034	ev_start (EV_A_ (W)w, ++preparecnt);
2539	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	3035	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2540	prepares [preparecnt - 1] = w;	3036	prepares [preparecnt - 1] = w;
		3037
		3038	EV_FREQUENT_CHECK;
2541	}	3039	}
2542		3040
2543	void	3041	void
2544	ev_prepare_stop (EV_P_ ev_prepare *w)	3042	ev_prepare_stop (EV_P_ ev_prepare *w)
2545	{	3043	{
2546	clear_pending (EV_A_ (W)w);	3044	clear_pending (EV_A_ (W)w);
2547	if (expect_false (!ev_is_active (w)))	3045	if (expect_false (!ev_is_active (w)))
2548	return;	3046	return;
2549		3047
		3048	EV_FREQUENT_CHECK;
		3049
2550	{	3050	{
2551	int active = ev_active (w);	3051	int active = ev_active (w);
2552		3052
2553	prepares [active - 1] = prepares [--preparecnt];	3053	prepares [active - 1] = prepares [--preparecnt];
2554	ev_active (prepares [active - 1]) = active;	3054	ev_active (prepares [active - 1]) = active;
2555	}	3055	}
2556		3056
2557	ev_stop (EV_A_ (W)w);	3057	ev_stop (EV_A_ (W)w);
		3058
		3059	EV_FREQUENT_CHECK;
2558	}	3060	}
2559		3061
2560	void	3062	void
2561	ev_check_start (EV_P_ ev_check *w)	3063	ev_check_start (EV_P_ ev_check *w)
2562	{	3064	{
2563	if (expect_false (ev_is_active (w)))	3065	if (expect_false (ev_is_active (w)))
2564	return;	3066	return;
		3067
		3068	EV_FREQUENT_CHECK;
2565		3069
2566	ev_start (EV_A_ (W)w, ++checkcnt);	3070	ev_start (EV_A_ (W)w, ++checkcnt);
2567	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	3071	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2568	checks [checkcnt - 1] = w;	3072	checks [checkcnt - 1] = w;
		3073
		3074	EV_FREQUENT_CHECK;
2569	}	3075	}
2570		3076
2571	void	3077	void
2572	ev_check_stop (EV_P_ ev_check *w)	3078	ev_check_stop (EV_P_ ev_check *w)
2573	{	3079	{
2574	clear_pending (EV_A_ (W)w);	3080	clear_pending (EV_A_ (W)w);
2575	if (expect_false (!ev_is_active (w)))	3081	if (expect_false (!ev_is_active (w)))
2576	return;	3082	return;
2577		3083
		3084	EV_FREQUENT_CHECK;
		3085
2578	{	3086	{
2579	int active = ev_active (w);	3087	int active = ev_active (w);
2580		3088
2581	checks [active - 1] = checks [--checkcnt];	3089	checks [active - 1] = checks [--checkcnt];
2582	ev_active (checks [active - 1]) = active;	3090	ev_active (checks [active - 1]) = active;
2583	}	3091	}
2584		3092
2585	ev_stop (EV_A_ (W)w);	3093	ev_stop (EV_A_ (W)w);
		3094
		3095	EV_FREQUENT_CHECK;
2586	}	3096	}
2587		3097
2588	#if EV_EMBED_ENABLE	3098	#if EV_EMBED_ENABLE
2589	void noinline	3099	void noinline
2590	ev_embed_sweep (EV_P_ ev_embed *w)	3100	ev_embed_sweep (EV_P_ ev_embed *w)
…		…
2617	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3127	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2618	}	3128	}
2619	}	3129	}
2620	}	3130	}
2621		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
2622	#if 0	3149	#if 0
2623	static void	3150	static void
2624	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3151	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2625	{	3152	{
2626	ev_idle_stop (EV_A_ idle);	3153	ev_idle_stop (EV_A_ idle);
…		…
2633	if (expect_false (ev_is_active (w)))	3160	if (expect_false (ev_is_active (w)))
2634	return;	3161	return;
2635		3162
2636	{	3163	{
2637	struct ev_loop *loop = w->other;	3164	struct ev_loop *loop = w->other;
2638	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 ()));
2639	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);
2640	}	3167	}
		3168
		3169	EV_FREQUENT_CHECK;
2641		3170
2642	ev_set_priority (&w->io, ev_priority (w));	3171	ev_set_priority (&w->io, ev_priority (w));
2643	ev_io_start (EV_A_ &w->io);	3172	ev_io_start (EV_A_ &w->io);
2644		3173
2645	ev_prepare_init (&w->prepare, embed_prepare_cb);	3174	ev_prepare_init (&w->prepare, embed_prepare_cb);
2646	ev_set_priority (&w->prepare, EV_MINPRI);	3175	ev_set_priority (&w->prepare, EV_MINPRI);
2647	ev_prepare_start (EV_A_ &w->prepare);	3176	ev_prepare_start (EV_A_ &w->prepare);
2648		3177
		3178	ev_fork_init (&w->fork, embed_fork_cb);
		3179	ev_fork_start (EV_A_ &w->fork);
		3180
2649	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3181	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2650		3182
2651	ev_start (EV_A_ (W)w, 1);	3183	ev_start (EV_A_ (W)w, 1);
		3184
		3185	EV_FREQUENT_CHECK;
2652	}	3186	}
2653		3187
2654	void	3188	void
2655	ev_embed_stop (EV_P_ ev_embed *w)	3189	ev_embed_stop (EV_P_ ev_embed *w)
2656	{	3190	{
2657	clear_pending (EV_A_ (W)w);	3191	clear_pending (EV_A_ (W)w);
2658	if (expect_false (!ev_is_active (w)))	3192	if (expect_false (!ev_is_active (w)))
2659	return;	3193	return;
2660		3194
		3195	EV_FREQUENT_CHECK;
		3196
2661	ev_io_stop (EV_A_ &w->io);	3197	ev_io_stop (EV_A_ &w->io);
2662	ev_prepare_stop (EV_A_ &w->prepare);	3198	ev_prepare_stop (EV_A_ &w->prepare);
		3199	ev_fork_stop (EV_A_ &w->fork);
2663		3200
2664	ev_stop (EV_A_ (W)w);	3201	EV_FREQUENT_CHECK;
2665	}	3202	}
2666	#endif	3203	#endif
2667		3204
2668	#if EV_FORK_ENABLE	3205	#if EV_FORK_ENABLE
2669	void	3206	void
2670	ev_fork_start (EV_P_ ev_fork *w)	3207	ev_fork_start (EV_P_ ev_fork *w)
2671	{	3208	{
2672	if (expect_false (ev_is_active (w)))	3209	if (expect_false (ev_is_active (w)))
2673	return;	3210	return;
		3211
		3212	EV_FREQUENT_CHECK;
2674		3213
2675	ev_start (EV_A_ (W)w, ++forkcnt);	3214	ev_start (EV_A_ (W)w, ++forkcnt);
2676	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3215	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2677	forks [forkcnt - 1] = w;	3216	forks [forkcnt - 1] = w;
		3217
		3218	EV_FREQUENT_CHECK;
2678	}	3219	}
2679		3220
2680	void	3221	void
2681	ev_fork_stop (EV_P_ ev_fork *w)	3222	ev_fork_stop (EV_P_ ev_fork *w)
2682	{	3223	{
2683	clear_pending (EV_A_ (W)w);	3224	clear_pending (EV_A_ (W)w);
2684	if (expect_false (!ev_is_active (w)))	3225	if (expect_false (!ev_is_active (w)))
2685	return;	3226	return;
2686		3227
		3228	EV_FREQUENT_CHECK;
		3229
2687	{	3230	{
2688	int active = ev_active (w);	3231	int active = ev_active (w);
2689		3232
2690	forks [active - 1] = forks [--forkcnt];	3233	forks [active - 1] = forks [--forkcnt];
2691	ev_active (forks [active - 1]) = active;	3234	ev_active (forks [active - 1]) = active;
2692	}	3235	}
2693		3236
2694	ev_stop (EV_A_ (W)w);	3237	ev_stop (EV_A_ (W)w);
		3238
		3239	EV_FREQUENT_CHECK;
2695	}	3240	}
2696	#endif	3241	#endif
2697		3242
2698	#if EV_ASYNC_ENABLE	3243	#if EV_ASYNC_ENABLE
2699	void	3244	void
…		…
2701	{	3246	{
2702	if (expect_false (ev_is_active (w)))	3247	if (expect_false (ev_is_active (w)))
2703	return;	3248	return;
2704		3249
2705	evpipe_init (EV_A);	3250	evpipe_init (EV_A);
		3251
		3252	EV_FREQUENT_CHECK;
2706		3253
2707	ev_start (EV_A_ (W)w, ++asynccnt);	3254	ev_start (EV_A_ (W)w, ++asynccnt);
2708	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);	3255	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2709	asyncs [asynccnt - 1] = w;	3256	asyncs [asynccnt - 1] = w;
		3257
		3258	EV_FREQUENT_CHECK;
2710	}	3259	}
2711		3260
2712	void	3261	void
2713	ev_async_stop (EV_P_ ev_async *w)	3262	ev_async_stop (EV_P_ ev_async *w)
2714	{	3263	{
2715	clear_pending (EV_A_ (W)w);	3264	clear_pending (EV_A_ (W)w);
2716	if (expect_false (!ev_is_active (w)))	3265	if (expect_false (!ev_is_active (w)))
2717	return;	3266	return;
2718		3267
		3268	EV_FREQUENT_CHECK;
		3269
2719	{	3270	{
2720	int active = ev_active (w);	3271	int active = ev_active (w);
2721		3272
2722	asyncs [active - 1] = asyncs [--asynccnt];	3273	asyncs [active - 1] = asyncs [--asynccnt];
2723	ev_active (asyncs [active - 1]) = active;	3274	ev_active (asyncs [active - 1]) = active;
2724	}	3275	}
2725		3276
2726	ev_stop (EV_A_ (W)w);	3277	ev_stop (EV_A_ (W)w);
		3278
		3279	EV_FREQUENT_CHECK;
2727	}	3280	}
2728		3281
2729	void	3282	void
2730	ev_async_send (EV_P_ ev_async *w)	3283	ev_async_send (EV_P_ ev_async *w)
2731	{	3284	{
…		…
2748	once_cb (EV_P_ struct ev_once *once, int revents)	3301	once_cb (EV_P_ struct ev_once *once, int revents)
2749	{	3302	{
2750	void (*cb)(int revents, void *arg) = once->cb;	3303	void (*cb)(int revents, void *arg) = once->cb;
2751	void *arg = once->arg;	3304	void *arg = once->arg;
2752		3305
2753	ev_io_stop (EV_A_ &once->io);	3306	ev_io_stop (EV_A_ &once->io);
2754	ev_timer_stop (EV_A_ &once->to);	3307	ev_timer_stop (EV_A_ &once->to);
2755	ev_free (once);	3308	ev_free (once);
2756		3309
2757	cb (revents, arg);	3310	cb (revents, arg);
2758	}	3311	}
2759		3312
2760	static void	3313	static void
2761	once_cb_io (EV_P_ ev_io *w, int revents)	3314	once_cb_io (EV_P_ ev_io *w, int revents)
2762	{	3315	{
2763	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));
2764	}	3319	}
2765		3320
2766	static void	3321	static void
2767	once_cb_to (EV_P_ ev_timer *w, int revents)	3322	once_cb_to (EV_P_ ev_timer *w, int revents)
2768	{	3323	{
2769	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));
2770	}	3327	}
2771		3328
2772	void	3329	void
2773	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)
2774	{	3331	{
…		…
2796	ev_timer_set (&once->to, timeout, 0.);	3353	ev_timer_set (&once->to, timeout, 0.);
2797	ev_timer_start (EV_A_ &once->to);	3354	ev_timer_start (EV_A_ &once->to);
2798	}	3355	}
2799	}	3356	}
2800		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
2801	#if EV_MULTIPLICITY	3466	#if EV_MULTIPLICITY
2802	#include "ev_wrap.h"	3467	#include "ev_wrap.h"
2803	#endif	3468	#endif
2804		3469
2805	#ifdef __cplusplus	3470	#ifdef __cplusplus

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