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Comparing libev/ev.c (file contents):
Revision 1.277 by root, Sun Dec 14 21:58:08 2008 UTC vs.
Revision 1.297 by root, Fri Jul 10 00:36:21 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	*
…		…
57	# endif	57	# endif
58	# ifndef EV_USE_MONOTONIC	58	# ifndef EV_USE_MONOTONIC
59	# define EV_USE_MONOTONIC 1	59	# define EV_USE_MONOTONIC 1
60	# endif	60	# endif
61	# endif	61	# endif
		62	# elif !defined(EV_USE_CLOCK_SYSCALL)
		63	# define EV_USE_CLOCK_SYSCALL 0
62	# endif	64	# endif
63		65
64	# if HAVE_CLOCK_GETTIME	66	# if HAVE_CLOCK_GETTIME
65	# ifndef EV_USE_MONOTONIC	67	# ifndef EV_USE_MONOTONIC
66	# define EV_USE_MONOTONIC 1	68	# define EV_USE_MONOTONIC 1
67	# endif	69	# endif
68	# ifndef EV_USE_REALTIME	70	# ifndef EV_USE_REALTIME
69	# define EV_USE_REALTIME 1	71	# define EV_USE_REALTIME 0
70	# endif	72	# endif
71	# else	73	# else
72	# ifndef EV_USE_MONOTONIC	74	# ifndef EV_USE_MONOTONIC
73	# define EV_USE_MONOTONIC 0	75	# define EV_USE_MONOTONIC 0
74	# endif	76	# endif
…		…
193	# define EV_USE_MONOTONIC 0	195	# define EV_USE_MONOTONIC 0
194	# endif	196	# endif
195	#endif	197	#endif
196		198
197	#ifndef EV_USE_REALTIME	199	#ifndef EV_USE_REALTIME
198	# define EV_USE_REALTIME 0	200	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
199	#endif	201	#endif
200		202
201	#ifndef EV_USE_NANOSLEEP	203	#ifndef EV_USE_NANOSLEEP
202	# if _POSIX_C_SOURCE >= 199309L	204	# if _POSIX_C_SOURCE >= 199309L
203	# define EV_USE_NANOSLEEP 1	205	# define EV_USE_NANOSLEEP 1
…		…
280	# define EV_USE_4HEAP !EV_MINIMAL	282	# define EV_USE_4HEAP !EV_MINIMAL
281	#endif	283	#endif
282		284
283	#ifndef EV_HEAP_CACHE_AT	285	#ifndef EV_HEAP_CACHE_AT
284	# 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
285	#endif	301	#endif
286		302
287	/* 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 */
288		304
289	#ifndef CLOCK_MONOTONIC	305	#ifndef CLOCK_MONOTONIC
…		…
320		336
321	#if EV_SELECT_IS_WINSOCKET	337	#if EV_SELECT_IS_WINSOCKET
322	# include <winsock.h>	338	# include <winsock.h>
323	#endif	339	#endif
324		340
325	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
326	/* which makes programs even slower. might work on other unices, too. */
327	#if EV_USE_CLOCK_SYSCALL
328	# include <syscall.h>
329	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
330	# undef EV_USE_MONOTONIC
331	# define EV_USE_MONOTONIC 1
332	#endif
333
334	#if EV_USE_EVENTFD	341	#if EV_USE_EVENTFD
335	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	342	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
336	# include <stdint.h>	343	# include <stdint.h>
337	# ifdef __cplusplus	344	# ifdef __cplusplus
338	extern "C" {	345	extern "C" {
…		…
384	# define inline_speed static noinline	391	# define inline_speed static noinline
385	#else	392	#else
386	# define inline_speed static inline	393	# define inline_speed static inline
387	#endif	394	#endif
388		395
389	#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
390	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	401	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		402	#endif
391		403
392	#define EMPTY /* required for microsofts broken pseudo-c compiler */	404	#define EMPTY /* required for microsofts broken pseudo-c compiler */
393	#define EMPTY2(a,b) /* used to suppress some warnings */	405	#define EMPTY2(a,b) /* used to suppress some warnings */
394		406
395	typedef ev_watcher *W;	407	typedef ev_watcher *W;
…		…
397	typedef ev_watcher_time *WT;	409	typedef ev_watcher_time *WT;
398		410
399	#define ev_active(w) ((W)(w))->active	411	#define ev_active(w) ((W)(w))->active
400	#define ev_at(w) ((WT)(w))->at	412	#define ev_at(w) ((WT)(w))->at
401		413
402	#if EV_USE_MONOTONIC	414	#if EV_USE_REALTIME
403	/* 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 */
404	/* 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
405	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? */
406	#endif	422	#endif
407		423
408	#ifdef _WIN32	424	#ifdef _WIN32
409	# include "ev_win32.c"	425	# include "ev_win32.c"
…		…
474	#define ev_malloc(size) ev_realloc (0, (size))	490	#define ev_malloc(size) ev_realloc (0, (size))
475	#define ev_free(ptr) ev_realloc ((ptr), 0)	491	#define ev_free(ptr) ev_realloc ((ptr), 0)
476		492
477	/*****************************************************************************/	493	/*****************************************************************************/
478		494
		495	/* file descriptor info structure */
479	typedef struct	496	typedef struct
480	{	497	{
481	WL head;	498	WL head;
482	unsigned char events;	499	unsigned char events; /* the events watched for */
483	unsigned char reify;	500	unsigned char reify; /* flag set when this ANFD needs reification */
484	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */	501	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
485	unsigned char unused;	502	unsigned char unused;
486	#if EV_USE_EPOLL	503	#if EV_USE_EPOLL
487	unsigned int egen; /* generation counter to counter epoll bugs */	504	unsigned int egen; /* generation counter to counter epoll bugs */
488	#endif	505	#endif
489	#if EV_SELECT_IS_WINSOCKET	506	#if EV_SELECT_IS_WINSOCKET
490	SOCKET handle;	507	SOCKET handle;
491	#endif	508	#endif
492	} ANFD;	509	} ANFD;
493		510
		511	/* stores the pending event set for a given watcher */
494	typedef struct	512	typedef struct
495	{	513	{
496	W w;	514	W w;
497	int events;	515	int events; /* the pending event set for the given watcher */
498	} ANPENDING;	516	} ANPENDING;
499		517
500	#if EV_USE_INOTIFY	518	#if EV_USE_INOTIFY
501	/* hash table entry per inotify-id */	519	/* hash table entry per inotify-id */
502	typedef struct	520	typedef struct
…		…
505	} ANFS;	523	} ANFS;
506	#endif	524	#endif
507		525
508	/* Heap Entry */	526	/* Heap Entry */
509	#if EV_HEAP_CACHE_AT	527	#if EV_HEAP_CACHE_AT
		528	/* a heap element */
510	typedef struct {	529	typedef struct {
511	ev_tstamp at;	530	ev_tstamp at;
512	WT w;	531	WT w;
513	} ANHE;	532	} ANHE;
514		533
515	#define ANHE_w(he) (he).w /* access watcher, read-write */	534	#define ANHE_w(he) (he).w /* access watcher, read-write */
516	#define ANHE_at(he) (he).at /* access cached at, read-only */	535	#define ANHE_at(he) (he).at /* access cached at, read-only */
517	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */	536	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
518	#else	537	#else
		538	/* a heap element */
519	typedef WT ANHE;	539	typedef WT ANHE;
520		540
521	#define ANHE_w(he) (he)	541	#define ANHE_w(he) (he)
522	#define ANHE_at(he) (he)->at	542	#define ANHE_at(he) (he)->at
523	#define ANHE_at_cache(he)	543	#define ANHE_at_cache(he)
…		…
547		567
548	static int ev_default_loop_ptr;	568	static int ev_default_loop_ptr;
549		569
550	#endif	570	#endif
551		571
		572	#if EV_MINIMAL < 2
		573	# define EV_SUSPEND_CB if (expect_false (suspend_cb)) suspend_cb (EV_A)
		574	# define EV_RESUME_CB if (expect_false (resume_cb )) resume_cb (EV_A)
		575	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		576	#else
		577	# define EV_SUSPEND_CB (void)0
		578	# define EV_RESUME_CB (void)0
		579	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		580	#endif
		581
552	/*****************************************************************************/	582	/*****************************************************************************/
553		583
		584	#ifndef EV_HAVE_EV_TIME
554	ev_tstamp	585	ev_tstamp
555	ev_time (void)	586	ev_time (void)
556	{	587	{
557	#if EV_USE_REALTIME	588	#if EV_USE_REALTIME
		589	if (expect_true (have_realtime))
		590	{
558	struct timespec ts;	591	struct timespec ts;
559	clock_gettime (CLOCK_REALTIME, &ts);	592	clock_gettime (CLOCK_REALTIME, &ts);
560	return ts.tv_sec + ts.tv_nsec * 1e-9;	593	return ts.tv_sec + ts.tv_nsec * 1e-9;
561	#else	594	}
		595	#endif
		596
562	struct timeval tv;	597	struct timeval tv;
563	gettimeofday (&tv, 0);	598	gettimeofday (&tv, 0);
564	return tv.tv_sec + tv.tv_usec * 1e-6;	599	return tv.tv_sec + tv.tv_usec * 1e-6;
565	#endif
566	}	600	}
		601	#endif
567		602
568	ev_tstamp inline_size	603	inline_size ev_tstamp
569	get_clock (void)	604	get_clock (void)
570	{	605	{
571	#if EV_USE_MONOTONIC	606	#if EV_USE_MONOTONIC
572	if (expect_true (have_monotonic))	607	if (expect_true (have_monotonic))
573	{	608	{
…		…
607		642
608	tv.tv_sec = (time_t)delay;	643	tv.tv_sec = (time_t)delay;
609	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	644	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
610		645
611	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */	646	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
612	/* somehting nto guaranteed by newer posix versions, but guaranteed */	647	/* somehting not guaranteed by newer posix versions, but guaranteed */
613	/* by older ones */	648	/* by older ones */
614	select (0, 0, 0, 0, &tv);	649	select (0, 0, 0, 0, &tv);
615	#endif	650	#endif
616	}	651	}
617	}	652	}
618		653
619	/*****************************************************************************/	654	/*****************************************************************************/
620		655
621	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	656	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
622		657
623	int inline_size	658	/* find a suitable new size for the given array, */
		659	/* hopefully by rounding to a ncie-to-malloc size */
		660	inline_size int
624	array_nextsize (int elem, int cur, int cnt)	661	array_nextsize (int elem, int cur, int cnt)
625	{	662	{
626	int ncur = cur + 1;	663	int ncur = cur + 1;
627		664
628	do	665	do
…		…
669	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	706	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
670	}	707	}
671	#endif	708	#endif
672		709
673	#define array_free(stem, idx) \	710	#define array_free(stem, idx) \
674	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	711	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
675		712
676	/*****************************************************************************/	713	/*****************************************************************************/
		714
		715	/* dummy callback for pending events */
		716	static void noinline
		717	pendingcb (EV_P_ ev_prepare *w, int revents)
		718	{
		719	}
677		720
678	void noinline	721	void noinline
679	ev_feed_event (EV_P_ void *w, int revents)	722	ev_feed_event (EV_P_ void *w, int revents)
680	{	723	{
681	W w_ = (W)w;	724	W w_ = (W)w;
…		…
690	pendings [pri][w_->pending - 1].w = w_;	733	pendings [pri][w_->pending - 1].w = w_;
691	pendings [pri][w_->pending - 1].events = revents;	734	pendings [pri][w_->pending - 1].events = revents;
692	}	735	}
693	}	736	}
694		737
695	void inline_speed	738	inline_speed void
		739	feed_reverse (EV_P_ W w)
		740	{
		741	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		742	rfeeds [rfeedcnt++] = w;
		743	}
		744
		745	inline_size void
		746	feed_reverse_done (EV_P_ int revents)
		747	{
		748	do
		749	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		750	while (rfeedcnt);
		751	}
		752
		753	inline_speed void
696	queue_events (EV_P_ W *events, int eventcnt, int type)	754	queue_events (EV_P_ W *events, int eventcnt, int type)
697	{	755	{
698	int i;	756	int i;
699		757
700	for (i = 0; i < eventcnt; ++i)	758	for (i = 0; i < eventcnt; ++i)
701	ev_feed_event (EV_A_ events [i], type);	759	ev_feed_event (EV_A_ events [i], type);
702	}	760	}
703		761
704	/*****************************************************************************/	762	/*****************************************************************************/
705		763
706	void inline_speed	764	inline_speed void
707	fd_event (EV_P_ int fd, int revents)	765	fd_event (EV_P_ int fd, int revents)
708	{	766	{
709	ANFD *anfd = anfds + fd;	767	ANFD *anfd = anfds + fd;
710	ev_io *w;	768	ev_io *w;
711		769
…		…
723	{	781	{
724	if (fd >= 0 && fd < anfdmax)	782	if (fd >= 0 && fd < anfdmax)
725	fd_event (EV_A_ fd, revents);	783	fd_event (EV_A_ fd, revents);
726	}	784	}
727		785
728	void inline_size	786	/* make sure the external fd watch events are in-sync */
		787	/* with the kernel/libev internal state */
		788	inline_size void
729	fd_reify (EV_P)	789	fd_reify (EV_P)
730	{	790	{
731	int i;	791	int i;
732		792
733	for (i = 0; i < fdchangecnt; ++i)	793	for (i = 0; i < fdchangecnt; ++i)
…		…
748	#ifdef EV_FD_TO_WIN32_HANDLE	808	#ifdef EV_FD_TO_WIN32_HANDLE
749	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	809	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
750	#else	810	#else
751	anfd->handle = _get_osfhandle (fd);	811	anfd->handle = _get_osfhandle (fd);
752	#endif	812	#endif
753	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	813	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
754	}	814	}
755	#endif	815	#endif
756		816
757	{	817	{
758	unsigned char o_events = anfd->events;	818	unsigned char o_events = anfd->events;
759	unsigned char o_reify = anfd->reify;	819	unsigned char o_reify = anfd->reify;
760		820
761	anfd->reify = 0;	821	anfd->reify = 0;
762	anfd->events = events;	822	anfd->events = events;
763		823
764	if (o_events != events || o_reify & EV_IOFDSET)	824	if (o_events != events || o_reify & EV__IOFDSET)
765	backend_modify (EV_A_ fd, o_events, events);	825	backend_modify (EV_A_ fd, o_events, events);
766	}	826	}
767	}	827	}
768		828
769	fdchangecnt = 0;	829	fdchangecnt = 0;
770	}	830	}
771		831
772	void inline_size	832	/* something about the given fd changed */
		833	inline_size void
773	fd_change (EV_P_ int fd, int flags)	834	fd_change (EV_P_ int fd, int flags)
774	{	835	{
775	unsigned char reify = anfds [fd].reify;	836	unsigned char reify = anfds [fd].reify;
776	anfds [fd].reify |= flags;	837	anfds [fd].reify |= flags;
777		838
…		…
781	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	842	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
782	fdchanges [fdchangecnt - 1] = fd;	843	fdchanges [fdchangecnt - 1] = fd;
783	}	844	}
784	}	845	}
785		846
786	void inline_speed	847	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		848	inline_speed void
787	fd_kill (EV_P_ int fd)	849	fd_kill (EV_P_ int fd)
788	{	850	{
789	ev_io *w;	851	ev_io *w;
790		852
791	while ((w = (ev_io *)anfds [fd].head))	853	while ((w = (ev_io *)anfds [fd].head))
…		…
793	ev_io_stop (EV_A_ w);	855	ev_io_stop (EV_A_ w);
794	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	856	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
795	}	857	}
796	}	858	}
797		859
798	int inline_size	860	/* check whether the given fd is atcually valid, for error recovery */
		861	inline_size int
799	fd_valid (int fd)	862	fd_valid (int fd)
800	{	863	{
801	#ifdef _WIN32	864	#ifdef _WIN32
802	return _get_osfhandle (fd) != -1;	865	return _get_osfhandle (fd) != -1;
803	#else	866	#else
…		…
840	for (fd = 0; fd < anfdmax; ++fd)	903	for (fd = 0; fd < anfdmax; ++fd)
841	if (anfds [fd].events)	904	if (anfds [fd].events)
842	{	905	{
843	anfds [fd].events = 0;	906	anfds [fd].events = 0;
844	anfds [fd].emask = 0;	907	anfds [fd].emask = 0;
845	fd_change (EV_A_ fd, EV_IOFDSET | 1);	908	fd_change (EV_A_ fd, EV__IOFDSET | 1);
846	}	909	}
847	}	910	}
848		911
849	/*****************************************************************************/	912	/*****************************************************************************/
850		913
…		…
866	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	929	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
867	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)	930	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
868	#define UPHEAP_DONE(p,k) ((p) == (k))	931	#define UPHEAP_DONE(p,k) ((p) == (k))
869		932
870	/* away from the root */	933	/* away from the root */
871	void inline_speed	934	inline_speed void
872	downheap (ANHE *heap, int N, int k)	935	downheap (ANHE *heap, int N, int k)
873	{	936	{
874	ANHE he = heap [k];	937	ANHE he = heap [k];
875	ANHE *E = heap + N + HEAP0;	938	ANHE *E = heap + N + HEAP0;
876		939
…		…
916	#define HEAP0 1	979	#define HEAP0 1
917	#define HPARENT(k) ((k) >> 1)	980	#define HPARENT(k) ((k) >> 1)
918	#define UPHEAP_DONE(p,k) (!(p))	981	#define UPHEAP_DONE(p,k) (!(p))
919		982
920	/* away from the root */	983	/* away from the root */
921	void inline_speed	984	inline_speed void
922	downheap (ANHE *heap, int N, int k)	985	downheap (ANHE *heap, int N, int k)
923	{	986	{
924	ANHE he = heap [k];	987	ANHE he = heap [k];
925		988
926	for (;;)	989	for (;;)
…		…
946	ev_active (ANHE_w (he)) = k;	1009	ev_active (ANHE_w (he)) = k;
947	}	1010	}
948	#endif	1011	#endif
949		1012
950	/* towards the root */	1013	/* towards the root */
951	void inline_speed	1014	inline_speed void
952	upheap (ANHE *heap, int k)	1015	upheap (ANHE *heap, int k)
953	{	1016	{
954	ANHE he = heap [k];	1017	ANHE he = heap [k];
955		1018
956	for (;;)	1019	for (;;)
…		…
967		1030
968	heap [k] = he;	1031	heap [k] = he;
969	ev_active (ANHE_w (he)) = k;	1032	ev_active (ANHE_w (he)) = k;
970	}	1033	}
971		1034
972	void inline_size	1035	/* move an element suitably so it is in a correct place */
		1036	inline_size void
973	adjustheap (ANHE *heap, int N, int k)	1037	adjustheap (ANHE *heap, int N, int k)
974	{	1038	{
975	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1039	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
976	upheap (heap, k);	1040	upheap (heap, k);
977	else	1041	else
978	downheap (heap, N, k);	1042	downheap (heap, N, k);
979	}	1043	}
980		1044
981	/* rebuild the heap: this function is used only once and executed rarely */	1045	/* rebuild the heap: this function is used only once and executed rarely */
982	void inline_size	1046	inline_size void
983	reheap (ANHE *heap, int N)	1047	reheap (ANHE *heap, int N)
984	{	1048	{
985	int i;	1049	int i;
986		1050
987	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */	1051	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
…		…
990	upheap (heap, i + HEAP0);	1054	upheap (heap, i + HEAP0);
991	}	1055	}
992		1056
993	/*****************************************************************************/	1057	/*****************************************************************************/
994		1058
		1059	/* associate signal watchers to a signal signal */
995	typedef struct	1060	typedef struct
996	{	1061	{
997	WL head;	1062	WL head;
998	EV_ATOMIC_T gotsig;	1063	EV_ATOMIC_T gotsig;
999	} ANSIG;	1064	} ANSIG;
…		…
1003		1068
1004	static EV_ATOMIC_T gotsig;	1069	static EV_ATOMIC_T gotsig;
1005		1070
1006	/*****************************************************************************/	1071	/*****************************************************************************/
1007		1072
1008	void inline_speed	1073	/* used to prepare libev internal fd's */
		1074	/* this is not fork-safe */
		1075	inline_speed void
1009	fd_intern (int fd)	1076	fd_intern (int fd)
1010	{	1077	{
1011	#ifdef _WIN32	1078	#ifdef _WIN32
1012	unsigned long arg = 1;	1079	unsigned long arg = 1;
1013	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1080	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
1018	}	1085	}
1019		1086
1020	static void noinline	1087	static void noinline
1021	evpipe_init (EV_P)	1088	evpipe_init (EV_P)
1022	{	1089	{
1023	if (!ev_is_active (&pipeev))	1090	if (!ev_is_active (&pipe_w))
1024	{	1091	{
1025	#if EV_USE_EVENTFD	1092	#if EV_USE_EVENTFD
1026	if ((evfd = eventfd (0, 0)) >= 0)	1093	if ((evfd = eventfd (0, 0)) >= 0)
1027	{	1094	{
1028	evpipe [0] = -1;	1095	evpipe [0] = -1;
1029	fd_intern (evfd);	1096	fd_intern (evfd);
1030	ev_io_set (&pipeev, evfd, EV_READ);	1097	ev_io_set (&pipe_w, evfd, EV_READ);
1031	}	1098	}
1032	else	1099	else
1033	#endif	1100	#endif
1034	{	1101	{
1035	while (pipe (evpipe))	1102	while (pipe (evpipe))
1036	ev_syserr ("(libev) error creating signal/async pipe");	1103	ev_syserr ("(libev) error creating signal/async pipe");
1037		1104
1038	fd_intern (evpipe [0]);	1105	fd_intern (evpipe [0]);
1039	fd_intern (evpipe [1]);	1106	fd_intern (evpipe [1]);
1040	ev_io_set (&pipeev, evpipe [0], EV_READ);	1107	ev_io_set (&pipe_w, evpipe [0], EV_READ);
1041	}	1108	}
1042		1109
1043	ev_io_start (EV_A_ &pipeev);	1110	ev_io_start (EV_A_ &pipe_w);
1044	ev_unref (EV_A); /* watcher should not keep loop alive */	1111	ev_unref (EV_A); /* watcher should not keep loop alive */
1045	}	1112	}
1046	}	1113	}
1047		1114
1048	void inline_size	1115	inline_size void
1049	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1116	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1050	{	1117	{
1051	if (!*flag)	1118	if (!*flag)
1052	{	1119	{
1053	int old_errno = errno; /* save errno because write might clobber it */	1120	int old_errno = errno; /* save errno because write might clobber it */
…		…
1066		1133
1067	errno = old_errno;	1134	errno = old_errno;
1068	}	1135	}
1069	}	1136	}
1070		1137
		1138	/* called whenever the libev signal pipe */
		1139	/* got some events (signal, async) */
1071	static void	1140	static void
1072	pipecb (EV_P_ ev_io *iow, int revents)	1141	pipecb (EV_P_ ev_io *iow, int revents)
1073	{	1142	{
1074	#if EV_USE_EVENTFD	1143	#if EV_USE_EVENTFD
1075	if (evfd >= 0)	1144	if (evfd >= 0)
…		…
1131	ev_feed_signal_event (EV_P_ int signum)	1200	ev_feed_signal_event (EV_P_ int signum)
1132	{	1201	{
1133	WL w;	1202	WL w;
1134		1203
1135	#if EV_MULTIPLICITY	1204	#if EV_MULTIPLICITY
1136	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1205	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1137	#endif	1206	#endif
1138		1207
1139	--signum;	1208	--signum;
1140		1209
1141	if (signum < 0 || signum >= signalmax)	1210	if (signum < 0 || signum >= signalmax)
…		…
1157		1226
1158	#ifndef WIFCONTINUED	1227	#ifndef WIFCONTINUED
1159	# define WIFCONTINUED(status) 0	1228	# define WIFCONTINUED(status) 0
1160	#endif	1229	#endif
1161		1230
1162	void inline_speed	1231	/* handle a single child status event */
		1232	inline_speed void
1163	child_reap (EV_P_ int chain, int pid, int status)	1233	child_reap (EV_P_ int chain, int pid, int status)
1164	{	1234	{
1165	ev_child *w;	1235	ev_child *w;
1166	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1236	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1167		1237
…		…
1180		1250
1181	#ifndef WCONTINUED	1251	#ifndef WCONTINUED
1182	# define WCONTINUED 0	1252	# define WCONTINUED 0
1183	#endif	1253	#endif
1184		1254
		1255	/* called on sigchld etc., calls waitpid */
1185	static void	1256	static void
1186	childcb (EV_P_ ev_signal *sw, int revents)	1257	childcb (EV_P_ ev_signal *sw, int revents)
1187	{	1258	{
1188	int pid, status;	1259	int pid, status;
1189		1260
…		…
1270	/* kqueue is borked on everything but netbsd apparently */	1341	/* kqueue is borked on everything but netbsd apparently */
1271	/* it usually doesn't work correctly on anything but sockets and pipes */	1342	/* it usually doesn't work correctly on anything but sockets and pipes */
1272	flags &= ~EVBACKEND_KQUEUE;	1343	flags &= ~EVBACKEND_KQUEUE;
1273	#endif	1344	#endif
1274	#ifdef __APPLE__	1345	#ifdef __APPLE__
1275	// flags &= ~EVBACKEND_KQUEUE & ~EVBACKEND_POLL; for documentation	1346	/* only select works correctly on that "unix-certified" platform */
1276	flags &= ~EVBACKEND_SELECT;	1347	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1348	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1277	#endif	1349	#endif
1278		1350
1279	return flags;	1351	return flags;
1280	}	1352	}
1281		1353
…		…
1295	ev_backend (EV_P)	1367	ev_backend (EV_P)
1296	{	1368	{
1297	return backend;	1369	return backend;
1298	}	1370	}
1299		1371
		1372	#if EV_MINIMAL < 2
1300	unsigned int	1373	unsigned int
1301	ev_loop_count (EV_P)	1374	ev_loop_count (EV_P)
1302	{	1375	{
1303	return loop_count;	1376	return loop_count;
1304	}	1377	}
1305		1378
		1379	unsigned int
		1380	ev_loop_depth (EV_P)
		1381	{
		1382	return loop_depth;
		1383	}
		1384
1306	void	1385	void
1307	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1386	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1308	{	1387	{
1309	io_blocktime = interval;	1388	io_blocktime = interval;
1310	}	1389	}
…		…
1313	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1392	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1314	{	1393	{
1315	timeout_blocktime = interval;	1394	timeout_blocktime = interval;
1316	}	1395	}
1317		1396
		1397	void
		1398	ev_set_userdata (EV_P_ void *data)
		1399	{
		1400	userdata = data;
		1401	}
		1402
		1403	void *
		1404	ev_userdata (EV_P)
		1405	{
		1406	return userdata;
		1407	}
		1408
		1409	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1410	{
		1411	invoke_cb = invoke_pending_cb;
		1412	}
		1413
		1414	void ev_set_blocking_cb (EV_P_ void (*suspend_cb_)(EV_P), void (*resume_cb_)(EV_P))
		1415	{
		1416	suspend_cb = suspend_cb_;
		1417	resume_cb = resume_cb_;
		1418	}
		1419	#endif
		1420
		1421	/* initialise a loop structure, must be zero-initialised */
1318	static void noinline	1422	static void noinline
1319	loop_init (EV_P_ unsigned int flags)	1423	loop_init (EV_P_ unsigned int flags)
1320	{	1424	{
1321	if (!backend)	1425	if (!backend)
1322	{	1426	{
		1427	#if EV_USE_REALTIME
		1428	if (!have_realtime)
		1429	{
		1430	struct timespec ts;
		1431
		1432	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1433	have_realtime = 1;
		1434	}
		1435	#endif
		1436
1323	#if EV_USE_MONOTONIC	1437	#if EV_USE_MONOTONIC
		1438	if (!have_monotonic)
1324	{	1439	{
1325	struct timespec ts;	1440	struct timespec ts;
		1441
1326	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1442	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1327	have_monotonic = 1;	1443	have_monotonic = 1;
1328	}	1444	}
1329	#endif	1445	#endif
1330		1446
1331	ev_rt_now = ev_time ();	1447	ev_rt_now = ev_time ();
1332	mn_now = get_clock ();	1448	mn_now = get_clock ();
1333	now_floor = mn_now;	1449	now_floor = mn_now;
1334	rtmn_diff = ev_rt_now - mn_now;	1450	rtmn_diff = ev_rt_now - mn_now;
		1451	#if EV_MINIMAL < 2
		1452	invoke_cb = ev_invoke_pending;
		1453	#endif
1335		1454
1336	io_blocktime = 0.;	1455	io_blocktime = 0.;
1337	timeout_blocktime = 0.;	1456	timeout_blocktime = 0.;
1338	backend = 0;	1457	backend = 0;
1339	backend_fd = -1;	1458	backend_fd = -1;
…		…
1370	#endif	1489	#endif
1371	#if EV_USE_SELECT	1490	#if EV_USE_SELECT
1372	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1491	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1373	#endif	1492	#endif
1374		1493
		1494	ev_prepare_init (&pending_w, pendingcb);
		1495
1375	ev_init (&pipeev, pipecb);	1496	ev_init (&pipe_w, pipecb);
1376	ev_set_priority (&pipeev, EV_MAXPRI);	1497	ev_set_priority (&pipe_w, EV_MAXPRI);
1377	}	1498	}
1378	}	1499	}
1379		1500
		1501	/* free up a loop structure */
1380	static void noinline	1502	static void noinline
1381	loop_destroy (EV_P)	1503	loop_destroy (EV_P)
1382	{	1504	{
1383	int i;	1505	int i;
1384		1506
1385	if (ev_is_active (&pipeev))	1507	if (ev_is_active (&pipe_w))
1386	{	1508	{
1387	ev_ref (EV_A); /* signal watcher */	1509	ev_ref (EV_A); /* signal watcher */
1388	ev_io_stop (EV_A_ &pipeev);	1510	ev_io_stop (EV_A_ &pipe_w);
1389		1511
1390	#if EV_USE_EVENTFD	1512	#if EV_USE_EVENTFD
1391	if (evfd >= 0)	1513	if (evfd >= 0)
1392	close (evfd);	1514	close (evfd);
1393	#endif	1515	#endif
…		…
1432	}	1554	}
1433		1555
1434	ev_free (anfds); anfdmax = 0;	1556	ev_free (anfds); anfdmax = 0;
1435		1557
1436	/* have to use the microsoft-never-gets-it-right macro */	1558	/* have to use the microsoft-never-gets-it-right macro */
		1559	array_free (rfeed, EMPTY);
1437	array_free (fdchange, EMPTY);	1560	array_free (fdchange, EMPTY);
1438	array_free (timer, EMPTY);	1561	array_free (timer, EMPTY);
1439	#if EV_PERIODIC_ENABLE	1562	#if EV_PERIODIC_ENABLE
1440	array_free (periodic, EMPTY);	1563	array_free (periodic, EMPTY);
1441	#endif	1564	#endif
…		…
1450		1573
1451	backend = 0;	1574	backend = 0;
1452	}	1575	}
1453		1576
1454	#if EV_USE_INOTIFY	1577	#if EV_USE_INOTIFY
1455	void inline_size infy_fork (EV_P);	1578	inline_size void infy_fork (EV_P);
1456	#endif	1579	#endif
1457		1580
1458	void inline_size	1581	inline_size void
1459	loop_fork (EV_P)	1582	loop_fork (EV_P)
1460	{	1583	{
1461	#if EV_USE_PORT	1584	#if EV_USE_PORT
1462	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1585	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1463	#endif	1586	#endif
…		…
1469	#endif	1592	#endif
1470	#if EV_USE_INOTIFY	1593	#if EV_USE_INOTIFY
1471	infy_fork (EV_A);	1594	infy_fork (EV_A);
1472	#endif	1595	#endif
1473		1596
1474	if (ev_is_active (&pipeev))	1597	if (ev_is_active (&pipe_w))
1475	{	1598	{
1476	/* this "locks" the handlers against writing to the pipe */	1599	/* this "locks" the handlers against writing to the pipe */
1477	/* while we modify the fd vars */	1600	/* while we modify the fd vars */
1478	gotsig = 1;	1601	gotsig = 1;
1479	#if EV_ASYNC_ENABLE	1602	#if EV_ASYNC_ENABLE
1480	gotasync = 1;	1603	gotasync = 1;
1481	#endif	1604	#endif
1482		1605
1483	ev_ref (EV_A);	1606	ev_ref (EV_A);
1484	ev_io_stop (EV_A_ &pipeev);	1607	ev_io_stop (EV_A_ &pipe_w);
1485		1608
1486	#if EV_USE_EVENTFD	1609	#if EV_USE_EVENTFD
1487	if (evfd >= 0)	1610	if (evfd >= 0)
1488	close (evfd);	1611	close (evfd);
1489	#endif	1612	#endif
…		…
1494	close (evpipe [1]);	1617	close (evpipe [1]);
1495	}	1618	}
1496		1619
1497	evpipe_init (EV_A);	1620	evpipe_init (EV_A);
1498	/* now iterate over everything, in case we missed something */	1621	/* now iterate over everything, in case we missed something */
1499	pipecb (EV_A_ &pipeev, EV_READ);	1622	pipecb (EV_A_ &pipe_w, EV_READ);
1500	}	1623	}
1501		1624
1502	postfork = 0;	1625	postfork = 0;
1503	}	1626	}
1504		1627
…		…
1529	void	1652	void
1530	ev_loop_fork (EV_P)	1653	ev_loop_fork (EV_P)
1531	{	1654	{
1532	postfork = 1; /* must be in line with ev_default_fork */	1655	postfork = 1; /* must be in line with ev_default_fork */
1533	}	1656	}
		1657	#endif /* multiplicity */
1534		1658
1535	#if EV_VERIFY	1659	#if EV_VERIFY
1536	static void noinline	1660	static void noinline
1537	verify_watcher (EV_P_ W w)	1661	verify_watcher (EV_P_ W w)
1538	{	1662	{
1539	assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));	1663	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1540		1664
1541	if (w->pending)	1665	if (w->pending)
1542	assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));	1666	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1543	}	1667	}
1544		1668
1545	static void noinline	1669	static void noinline
1546	verify_heap (EV_P_ ANHE *heap, int N)	1670	verify_heap (EV_P_ ANHE *heap, int N)
1547	{	1671	{
1548	int i;	1672	int i;
1549		1673
1550	for (i = HEAP0; i < N + HEAP0; ++i)	1674	for (i = HEAP0; i < N + HEAP0; ++i)
1551	{	1675	{
1552	assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));	1676	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1553	assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));	1677	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1554	assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));	1678	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1555		1679
1556	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));	1680	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1557	}	1681	}
1558	}	1682	}
1559		1683
1560	static void noinline	1684	static void noinline
1561	array_verify (EV_P_ W *ws, int cnt)	1685	array_verify (EV_P_ W *ws, int cnt)
1562	{	1686	{
1563	while (cnt--)	1687	while (cnt--)
1564	{	1688	{
1565	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));	1689	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1566	verify_watcher (EV_A_ ws [cnt]);	1690	verify_watcher (EV_A_ ws [cnt]);
1567	}	1691	}
1568	}	1692	}
1569	#endif	1693	#endif
1570		1694
		1695	#if EV_MINIMAL < 2
1571	void	1696	void
1572	ev_loop_verify (EV_P)	1697	ev_loop_verify (EV_P)
1573	{	1698	{
1574	#if EV_VERIFY	1699	#if EV_VERIFY
1575	int i;	1700	int i;
…		…
1577		1702
1578	assert (activecnt >= -1);	1703	assert (activecnt >= -1);
1579		1704
1580	assert (fdchangemax >= fdchangecnt);	1705	assert (fdchangemax >= fdchangecnt);
1581	for (i = 0; i < fdchangecnt; ++i)	1706	for (i = 0; i < fdchangecnt; ++i)
1582	assert (("negative fd in fdchanges", fdchanges [i] >= 0));	1707	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1583		1708
1584	assert (anfdmax >= 0);	1709	assert (anfdmax >= 0);
1585	for (i = 0; i < anfdmax; ++i)	1710	for (i = 0; i < anfdmax; ++i)
1586	for (w = anfds [i].head; w; w = w->next)	1711	for (w = anfds [i].head; w; w = w->next)
1587	{	1712	{
1588	verify_watcher (EV_A_ (W)w);	1713	verify_watcher (EV_A_ (W)w);
1589	assert (("inactive fd watcher on anfd list", ev_active (w) == 1));	1714	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1590	assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));	1715	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1591	}	1716	}
1592		1717
1593	assert (timermax >= timercnt);	1718	assert (timermax >= timercnt);
1594	verify_heap (EV_A_ timers, timercnt);	1719	verify_heap (EV_A_ timers, timercnt);
1595		1720
…		…
1628	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1753	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1629	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)	1754	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1630	# endif	1755	# endif
1631	#endif	1756	#endif
1632	}	1757	}
1633		1758	#endif
1634	#endif /* multiplicity */
1635		1759
1636	#if EV_MULTIPLICITY	1760	#if EV_MULTIPLICITY
1637	struct ev_loop *	1761	struct ev_loop *
1638	ev_default_loop_init (unsigned int flags)	1762	ev_default_loop_init (unsigned int flags)
1639	#else	1763	#else
…		…
1700	ev_invoke (EV_P_ void *w, int revents)	1824	ev_invoke (EV_P_ void *w, int revents)
1701	{	1825	{
1702	EV_CB_INVOKE ((W)w, revents);	1826	EV_CB_INVOKE ((W)w, revents);
1703	}	1827	}
1704		1828
1705	void inline_speed	1829	void noinline
1706	call_pending (EV_P)	1830	ev_invoke_pending (EV_P)
1707	{	1831	{
1708	int pri;	1832	int pri;
1709		1833
1710	for (pri = NUMPRI; pri--; )	1834	for (pri = NUMPRI; pri--; )
1711	while (pendingcnt [pri])	1835	while (pendingcnt [pri])
1712	{	1836	{
1713	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1837	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1714		1838
1715	if (expect_true (p->w))
1716	{
1717	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1839	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1840	/* ^ this is no longer true, as pending_w could be here */
1718		1841
1719	p->w->pending = 0;	1842	p->w->pending = 0;
1720	EV_CB_INVOKE (p->w, p->events);	1843	EV_CB_INVOKE (p->w, p->events);
1721	EV_FREQUENT_CHECK;	1844	EV_FREQUENT_CHECK;
1722	}
1723	}	1845	}
1724	}	1846	}
1725		1847
1726	#if EV_IDLE_ENABLE	1848	#if EV_IDLE_ENABLE
1727	void inline_size	1849	/* make idle watchers pending. this handles the "call-idle */
		1850	/* only when higher priorities are idle" logic */
		1851	inline_size void
1728	idle_reify (EV_P)	1852	idle_reify (EV_P)
1729	{	1853	{
1730	if (expect_false (idleall))	1854	if (expect_false (idleall))
1731	{	1855	{
1732	int pri;	1856	int pri;
…		…
1744	}	1868	}
1745	}	1869	}
1746	}	1870	}
1747	#endif	1871	#endif
1748		1872
1749	void inline_size	1873	/* make timers pending */
		1874	inline_size void
1750	timers_reify (EV_P)	1875	timers_reify (EV_P)
1751	{	1876	{
1752	EV_FREQUENT_CHECK;	1877	EV_FREQUENT_CHECK;
1753		1878
1754	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	1879	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1755	{	1880	{
1756	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	1881	do
1757
1758	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1759
1760	/* first reschedule or stop timer */
1761	if (w->repeat)
1762	{	1882	{
		1883	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1884
		1885	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		1886
		1887	/* first reschedule or stop timer */
		1888	if (w->repeat)
		1889	{
1763	ev_at (w) += w->repeat;	1890	ev_at (w) += w->repeat;
1764	if (ev_at (w) < mn_now)	1891	if (ev_at (w) < mn_now)
1765	ev_at (w) = mn_now;	1892	ev_at (w) = mn_now;
1766		1893
1767	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1894	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1768		1895
1769	ANHE_at_cache (timers [HEAP0]);	1896	ANHE_at_cache (timers [HEAP0]);
1770	downheap (timers, timercnt, HEAP0);	1897	downheap (timers, timercnt, HEAP0);
		1898	}
		1899	else
		1900	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1901
		1902	EV_FREQUENT_CHECK;
		1903	feed_reverse (EV_A_ (W)w);
1771	}	1904	}
1772	else	1905	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1773	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1774		1906
1775	EV_FREQUENT_CHECK;
1776	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1907	feed_reverse_done (EV_A_ EV_TIMEOUT);
1777	}	1908	}
1778	}	1909	}
1779		1910
1780	#if EV_PERIODIC_ENABLE	1911	#if EV_PERIODIC_ENABLE
1781	void inline_size	1912	/* make periodics pending */
		1913	inline_size void
1782	periodics_reify (EV_P)	1914	periodics_reify (EV_P)
1783	{	1915	{
1784	EV_FREQUENT_CHECK;	1916	EV_FREQUENT_CHECK;
1785		1917
1786	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	1918	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1787	{	1919	{
1788	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	1920	int feed_count = 0;
1789		1921
1790	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	1922	do
1791
1792	/* first reschedule or stop timer */
1793	if (w->reschedule_cb)
1794	{	1923	{
		1924	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1925
		1926	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		1927
		1928	/* first reschedule or stop timer */
		1929	if (w->reschedule_cb)
		1930	{
1795	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1931	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1796		1932
1797	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));	1933	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1798		1934
1799	ANHE_at_cache (periodics [HEAP0]);	1935	ANHE_at_cache (periodics [HEAP0]);
1800	downheap (periodics, periodiccnt, HEAP0);	1936	downheap (periodics, periodiccnt, HEAP0);
		1937	}
		1938	else if (w->interval)
		1939	{
		1940	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1941	/* if next trigger time is not sufficiently in the future, put it there */
		1942	/* this might happen because of floating point inexactness */
		1943	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1944	{
		1945	ev_at (w) += w->interval;
		1946
		1947	/* if interval is unreasonably low we might still have a time in the past */
		1948	/* so correct this. this will make the periodic very inexact, but the user */
		1949	/* has effectively asked to get triggered more often than possible */
		1950	if (ev_at (w) < ev_rt_now)
		1951	ev_at (w) = ev_rt_now;
		1952	}
		1953
		1954	ANHE_at_cache (periodics [HEAP0]);
		1955	downheap (periodics, periodiccnt, HEAP0);
		1956	}
		1957	else
		1958	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1959
		1960	EV_FREQUENT_CHECK;
		1961	feed_reverse (EV_A_ (W)w);
1801	}	1962	}
1802	else if (w->interval)	1963	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1803	{
1804	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1805	/* if next trigger time is not sufficiently in the future, put it there */
1806	/* this might happen because of floating point inexactness */
1807	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1808	{
1809	ev_at (w) += w->interval;
1810		1964
1811	/* if interval is unreasonably low we might still have a time in the past */
1812	/* so correct this. this will make the periodic very inexact, but the user */
1813	/* has effectively asked to get triggered more often than possible */
1814	if (ev_at (w) < ev_rt_now)
1815	ev_at (w) = ev_rt_now;
1816	}
1817
1818	ANHE_at_cache (periodics [HEAP0]);
1819	downheap (periodics, periodiccnt, HEAP0);
1820	}
1821	else
1822	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1823
1824	EV_FREQUENT_CHECK;
1825	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1965	feed_reverse_done (EV_A_ EV_PERIODIC);
1826	}	1966	}
1827	}	1967	}
1828		1968
		1969	/* simply recalculate all periodics */
		1970	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1829	static void noinline	1971	static void noinline
1830	periodics_reschedule (EV_P)	1972	periodics_reschedule (EV_P)
1831	{	1973	{
1832	int i;	1974	int i;
1833		1975
…		…
1846		1988
1847	reheap (periodics, periodiccnt);	1989	reheap (periodics, periodiccnt);
1848	}	1990	}
1849	#endif	1991	#endif
1850		1992
1851	void inline_speed	1993	/* adjust all timers by a given offset */
		1994	static void noinline
		1995	timers_reschedule (EV_P_ ev_tstamp adjust)
		1996	{
		1997	int i;
		1998
		1999	for (i = 0; i < timercnt; ++i)
		2000	{
		2001	ANHE *he = timers + i + HEAP0;
		2002	ANHE_w (*he)->at += adjust;
		2003	ANHE_at_cache (*he);
		2004	}
		2005	}
		2006
		2007	/* fetch new monotonic and realtime times from the kernel */
		2008	/* also detetc if there was a timejump, and act accordingly */
		2009	inline_speed void
1852	time_update (EV_P_ ev_tstamp max_block)	2010	time_update (EV_P_ ev_tstamp max_block)
1853	{	2011	{
1854	int i;
1855
1856	#if EV_USE_MONOTONIC	2012	#if EV_USE_MONOTONIC
1857	if (expect_true (have_monotonic))	2013	if (expect_true (have_monotonic))
1858	{	2014	{
		2015	int i;
1859	ev_tstamp odiff = rtmn_diff;	2016	ev_tstamp odiff = rtmn_diff;
1860		2017
1861	mn_now = get_clock ();	2018	mn_now = get_clock ();
1862		2019
1863	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2020	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1889	ev_rt_now = ev_time ();	2046	ev_rt_now = ev_time ();
1890	mn_now = get_clock ();	2047	mn_now = get_clock ();
1891	now_floor = mn_now;	2048	now_floor = mn_now;
1892	}	2049	}
1893		2050
		2051	/* no timer adjustment, as the monotonic clock doesn't jump */
		2052	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1894	# if EV_PERIODIC_ENABLE	2053	# if EV_PERIODIC_ENABLE
1895	periodics_reschedule (EV_A);	2054	periodics_reschedule (EV_A);
1896	# endif	2055	# endif
1897	/* no timer adjustment, as the monotonic clock doesn't jump */
1898	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1899	}	2056	}
1900	else	2057	else
1901	#endif	2058	#endif
1902	{	2059	{
1903	ev_rt_now = ev_time ();	2060	ev_rt_now = ev_time ();
1904		2061
1905	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2062	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1906	{	2063	{
		2064	/* adjust timers. this is easy, as the offset is the same for all of them */
		2065	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1907	#if EV_PERIODIC_ENABLE	2066	#if EV_PERIODIC_ENABLE
1908	periodics_reschedule (EV_A);	2067	periodics_reschedule (EV_A);
1909	#endif	2068	#endif
1910	/* adjust timers. this is easy, as the offset is the same for all of them */
1911	for (i = 0; i < timercnt; ++i)
1912	{
1913	ANHE *he = timers + i + HEAP0;
1914	ANHE_w (*he)->at += ev_rt_now - mn_now;
1915	ANHE_at_cache (*he);
1916	}
1917	}	2069	}
1918		2070
1919	mn_now = ev_rt_now;	2071	mn_now = ev_rt_now;
1920	}	2072	}
1921	}	2073	}
1922		2074
1923	void	2075	void
1924	ev_ref (EV_P)
1925	{
1926	++activecnt;
1927	}
1928
1929	void
1930	ev_unref (EV_P)
1931	{
1932	--activecnt;
1933	}
1934
1935	void
1936	ev_now_update (EV_P)
1937	{
1938	time_update (EV_A_ 1e100);
1939	}
1940
1941	static int loop_done;
1942
1943	void
1944	ev_loop (EV_P_ int flags)	2076	ev_loop (EV_P_ int flags)
1945	{	2077	{
		2078	#if EV_MINIMAL < 2
		2079	++loop_depth;
		2080	#endif
		2081
1946	loop_done = EVUNLOOP_CANCEL;	2082	loop_done = EVUNLOOP_CANCEL;
1947		2083
1948	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2084	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1949		2085
1950	do	2086	do
1951	{	2087	{
1952	#if EV_VERIFY >= 2	2088	#if EV_VERIFY >= 2
1953	ev_loop_verify (EV_A);	2089	ev_loop_verify (EV_A);
…		…
1966	/* we might have forked, so queue fork handlers */	2102	/* we might have forked, so queue fork handlers */
1967	if (expect_false (postfork))	2103	if (expect_false (postfork))
1968	if (forkcnt)	2104	if (forkcnt)
1969	{	2105	{
1970	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2106	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1971	call_pending (EV_A);	2107	EV_INVOKE_PENDING;
1972	}	2108	}
1973	#endif	2109	#endif
1974		2110
1975	/* queue prepare watchers (and execute them) */	2111	/* queue prepare watchers (and execute them) */
1976	if (expect_false (preparecnt))	2112	if (expect_false (preparecnt))
1977	{	2113	{
1978	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2114	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1979	call_pending (EV_A);	2115	EV_INVOKE_PENDING;
1980	}	2116	}
1981
1982	if (expect_false (!activecnt))
1983	break;
1984		2117
1985	/* we might have forked, so reify kernel state if necessary */	2118	/* we might have forked, so reify kernel state if necessary */
1986	if (expect_false (postfork))	2119	if (expect_false (postfork))
1987	loop_fork (EV_A);	2120	loop_fork (EV_A);
1988		2121
…		…
1994	ev_tstamp waittime = 0.;	2127	ev_tstamp waittime = 0.;
1995	ev_tstamp sleeptime = 0.;	2128	ev_tstamp sleeptime = 0.;
1996		2129
1997	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2130	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1998	{	2131	{
		2132	/* remember old timestamp for io_blocktime calculation */
		2133	ev_tstamp prev_mn_now = mn_now;
		2134
1999	/* update time to cancel out callback processing overhead */	2135	/* update time to cancel out callback processing overhead */
2000	time_update (EV_A_ 1e100);	2136	time_update (EV_A_ 1e100);
2001		2137
2002	waittime = MAX_BLOCKTIME;	2138	waittime = MAX_BLOCKTIME;
2003		2139
…		…
2013	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2149	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
2014	if (waittime > to) waittime = to;	2150	if (waittime > to) waittime = to;
2015	}	2151	}
2016	#endif	2152	#endif
2017		2153
		2154	/* don't let timeouts decrease the waittime below timeout_blocktime */
2018	if (expect_false (waittime < timeout_blocktime))	2155	if (expect_false (waittime < timeout_blocktime))
2019	waittime = timeout_blocktime;	2156	waittime = timeout_blocktime;
2020		2157
2021	sleeptime = waittime - backend_fudge;	2158	/* extra check because io_blocktime is commonly 0 */
2022
2023	if (expect_true (sleeptime > io_blocktime))	2159	if (expect_false (io_blocktime))
2024	sleeptime = io_blocktime;
2025
2026	if (sleeptime)
2027	{	2160	{
		2161	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2162
		2163	if (sleeptime > waittime - backend_fudge)
		2164	sleeptime = waittime - backend_fudge;
		2165
		2166	if (expect_true (sleeptime > 0.))
		2167	{
2028	ev_sleep (sleeptime);	2168	ev_sleep (sleeptime);
2029	waittime -= sleeptime;	2169	waittime -= sleeptime;
		2170	}
2030	}	2171	}
2031	}	2172	}
2032		2173
		2174	#if EV_MINIMAL < 2
2033	++loop_count;	2175	++loop_count;
		2176	#endif
2034	backend_poll (EV_A_ waittime);	2177	backend_poll (EV_A_ waittime);
2035		2178
2036	/* update ev_rt_now, do magic */	2179	/* update ev_rt_now, do magic */
2037	time_update (EV_A_ waittime + sleeptime);	2180	time_update (EV_A_ waittime + sleeptime);
2038	}	2181	}
…		…
2050		2193
2051	/* queue check watchers, to be executed first */	2194	/* queue check watchers, to be executed first */
2052	if (expect_false (checkcnt))	2195	if (expect_false (checkcnt))
2053	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2196	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2054		2197
2055	call_pending (EV_A);	2198	EV_INVOKE_PENDING;
2056	}	2199	}
2057	while (expect_true (	2200	while (expect_true (
2058	activecnt	2201	activecnt
2059	&& !loop_done	2202	&& !loop_done
2060	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2203	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2061	));	2204	));
2062		2205
2063	if (loop_done == EVUNLOOP_ONE)	2206	if (loop_done == EVUNLOOP_ONE)
2064	loop_done = EVUNLOOP_CANCEL;	2207	loop_done = EVUNLOOP_CANCEL;
		2208
		2209	#if EV_MINIMAL < 2
		2210	--loop_depth;
		2211	#endif
2065	}	2212	}
2066		2213
2067	void	2214	void
2068	ev_unloop (EV_P_ int how)	2215	ev_unloop (EV_P_ int how)
2069	{	2216	{
2070	loop_done = how;	2217	loop_done = how;
2071	}	2218	}
2072		2219
		2220	void
		2221	ev_ref (EV_P)
		2222	{
		2223	++activecnt;
		2224	}
		2225
		2226	void
		2227	ev_unref (EV_P)
		2228	{
		2229	--activecnt;
		2230	}
		2231
		2232	void
		2233	ev_now_update (EV_P)
		2234	{
		2235	time_update (EV_A_ 1e100);
		2236	}
		2237
		2238	void
		2239	ev_suspend (EV_P)
		2240	{
		2241	ev_now_update (EV_A);
		2242	}
		2243
		2244	void
		2245	ev_resume (EV_P)
		2246	{
		2247	ev_tstamp mn_prev = mn_now;
		2248
		2249	ev_now_update (EV_A);
		2250	timers_reschedule (EV_A_ mn_now - mn_prev);
		2251	#if EV_PERIODIC_ENABLE
		2252	/* TODO: really do this? */
		2253	periodics_reschedule (EV_A);
		2254	#endif
		2255	}
		2256
2073	/*****************************************************************************/	2257	/*****************************************************************************/
		2258	/* singly-linked list management, used when the expected list length is short */
2074		2259
2075	void inline_size	2260	inline_size void
2076	wlist_add (WL *head, WL elem)	2261	wlist_add (WL *head, WL elem)
2077	{	2262	{
2078	elem->next = *head;	2263	elem->next = *head;
2079	*head = elem;	2264	*head = elem;
2080	}	2265	}
2081		2266
2082	void inline_size	2267	inline_size void
2083	wlist_del (WL *head, WL elem)	2268	wlist_del (WL *head, WL elem)
2084	{	2269	{
2085	while (*head)	2270	while (*head)
2086	{	2271	{
2087	if (*head == elem)	2272	if (*head == elem)
…		…
2092		2277
2093	head = &(*head)->next;	2278	head = &(*head)->next;
2094	}	2279	}
2095	}	2280	}
2096		2281
2097	void inline_speed	2282	/* internal, faster, version of ev_clear_pending */
		2283	inline_speed void
2098	clear_pending (EV_P_ W w)	2284	clear_pending (EV_P_ W w)
2099	{	2285	{
2100	if (w->pending)	2286	if (w->pending)
2101	{	2287	{
2102	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2288	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2103	w->pending = 0;	2289	w->pending = 0;
2104	}	2290	}
2105	}	2291	}
2106		2292
2107	int	2293	int
…		…
2111	int pending = w_->pending;	2297	int pending = w_->pending;
2112		2298
2113	if (expect_true (pending))	2299	if (expect_true (pending))
2114	{	2300	{
2115	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2301	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2302	p->w = (W)&pending_w;
2116	w_->pending = 0;	2303	w_->pending = 0;
2117	p->w = 0;
2118	return p->events;	2304	return p->events;
2119	}	2305	}
2120	else	2306	else
2121	return 0;	2307	return 0;
2122	}	2308	}
2123		2309
2124	void inline_size	2310	inline_size void
2125	pri_adjust (EV_P_ W w)	2311	pri_adjust (EV_P_ W w)
2126	{	2312	{
2127	int pri = w->priority;	2313	int pri = ev_priority (w);
2128	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2314	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2129	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2315	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2130	w->priority = pri;	2316	ev_set_priority (w, pri);
2131	}	2317	}
2132		2318
2133	void inline_speed	2319	inline_speed void
2134	ev_start (EV_P_ W w, int active)	2320	ev_start (EV_P_ W w, int active)
2135	{	2321	{
2136	pri_adjust (EV_A_ w);	2322	pri_adjust (EV_A_ w);
2137	w->active = active;	2323	w->active = active;
2138	ev_ref (EV_A);	2324	ev_ref (EV_A);
2139	}	2325	}
2140		2326
2141	void inline_size	2327	inline_size void
2142	ev_stop (EV_P_ W w)	2328	ev_stop (EV_P_ W w)
2143	{	2329	{
2144	ev_unref (EV_A);	2330	ev_unref (EV_A);
2145	w->active = 0;	2331	w->active = 0;
2146	}	2332	}
…		…
2153	int fd = w->fd;	2339	int fd = w->fd;
2154		2340
2155	if (expect_false (ev_is_active (w)))	2341	if (expect_false (ev_is_active (w)))
2156	return;	2342	return;
2157		2343
2158	assert (("ev_io_start called with negative fd", fd >= 0));	2344	assert (("libev: ev_io_start called with negative fd", fd >= 0));
2159	assert (("ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE))));	2345	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2160		2346
2161	EV_FREQUENT_CHECK;	2347	EV_FREQUENT_CHECK;
2162		2348
2163	ev_start (EV_A_ (W)w, 1);	2349	ev_start (EV_A_ (W)w, 1);
2164	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2350	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2165	wlist_add (&anfds[fd].head, (WL)w);	2351	wlist_add (&anfds[fd].head, (WL)w);
2166		2352
2167	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2353	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
2168	w->events &= ~EV_IOFDSET;	2354	w->events &= ~EV__IOFDSET;
2169		2355
2170	EV_FREQUENT_CHECK;	2356	EV_FREQUENT_CHECK;
2171	}	2357	}
2172		2358
2173	void noinline	2359	void noinline
…		…
2175	{	2361	{
2176	clear_pending (EV_A_ (W)w);	2362	clear_pending (EV_A_ (W)w);
2177	if (expect_false (!ev_is_active (w)))	2363	if (expect_false (!ev_is_active (w)))
2178	return;	2364	return;
2179		2365
2180	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2366	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2181		2367
2182	EV_FREQUENT_CHECK;	2368	EV_FREQUENT_CHECK;
2183		2369
2184	wlist_del (&anfds[w->fd].head, (WL)w);	2370	wlist_del (&anfds[w->fd].head, (WL)w);
2185	ev_stop (EV_A_ (W)w);	2371	ev_stop (EV_A_ (W)w);
…		…
2195	if (expect_false (ev_is_active (w)))	2381	if (expect_false (ev_is_active (w)))
2196	return;	2382	return;
2197		2383
2198	ev_at (w) += mn_now;	2384	ev_at (w) += mn_now;
2199		2385
2200	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2386	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2201		2387
2202	EV_FREQUENT_CHECK;	2388	EV_FREQUENT_CHECK;
2203		2389
2204	++timercnt;	2390	++timercnt;
2205	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);	2391	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
…		…
2208	ANHE_at_cache (timers [ev_active (w)]);	2394	ANHE_at_cache (timers [ev_active (w)]);
2209	upheap (timers, ev_active (w));	2395	upheap (timers, ev_active (w));
2210		2396
2211	EV_FREQUENT_CHECK;	2397	EV_FREQUENT_CHECK;
2212		2398
2213	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2399	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2214	}	2400	}
2215		2401
2216	void noinline	2402	void noinline
2217	ev_timer_stop (EV_P_ ev_timer *w)	2403	ev_timer_stop (EV_P_ ev_timer *w)
2218	{	2404	{
…		…
2223	EV_FREQUENT_CHECK;	2409	EV_FREQUENT_CHECK;
2224		2410
2225	{	2411	{
2226	int active = ev_active (w);	2412	int active = ev_active (w);
2227		2413
2228	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2414	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2229		2415
2230	--timercnt;	2416	--timercnt;
2231		2417
2232	if (expect_true (active < timercnt + HEAP0))	2418	if (expect_true (active < timercnt + HEAP0))
2233	{	2419	{
…		…
2277		2463
2278	if (w->reschedule_cb)	2464	if (w->reschedule_cb)
2279	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2465	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2280	else if (w->interval)	2466	else if (w->interval)
2281	{	2467	{
2282	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2468	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2283	/* this formula differs from the one in periodic_reify because we do not always round up */	2469	/* this formula differs from the one in periodic_reify because we do not always round up */
2284	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2470	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2285	}	2471	}
2286	else	2472	else
2287	ev_at (w) = w->offset;	2473	ev_at (w) = w->offset;
…		…
2295	ANHE_at_cache (periodics [ev_active (w)]);	2481	ANHE_at_cache (periodics [ev_active (w)]);
2296	upheap (periodics, ev_active (w));	2482	upheap (periodics, ev_active (w));
2297		2483
2298	EV_FREQUENT_CHECK;	2484	EV_FREQUENT_CHECK;
2299		2485
2300	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2486	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2301	}	2487	}
2302		2488
2303	void noinline	2489	void noinline
2304	ev_periodic_stop (EV_P_ ev_periodic *w)	2490	ev_periodic_stop (EV_P_ ev_periodic *w)
2305	{	2491	{
…		…
2310	EV_FREQUENT_CHECK;	2496	EV_FREQUENT_CHECK;
2311		2497
2312	{	2498	{
2313	int active = ev_active (w);	2499	int active = ev_active (w);
2314		2500
2315	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2501	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2316		2502
2317	--periodiccnt;	2503	--periodiccnt;
2318		2504
2319	if (expect_true (active < periodiccnt + HEAP0))	2505	if (expect_true (active < periodiccnt + HEAP0))
2320	{	2506	{
…		…
2343		2529
2344	void noinline	2530	void noinline
2345	ev_signal_start (EV_P_ ev_signal *w)	2531	ev_signal_start (EV_P_ ev_signal *w)
2346	{	2532	{
2347	#if EV_MULTIPLICITY	2533	#if EV_MULTIPLICITY
2348	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2534	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2349	#endif	2535	#endif
2350	if (expect_false (ev_is_active (w)))	2536	if (expect_false (ev_is_active (w)))
2351	return;	2537	return;
2352		2538
2353	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2539	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2354		2540
2355	evpipe_init (EV_A);	2541	evpipe_init (EV_A);
2356		2542
2357	EV_FREQUENT_CHECK;	2543	EV_FREQUENT_CHECK;
2358		2544
…		…
2409		2595
2410	void	2596	void
2411	ev_child_start (EV_P_ ev_child *w)	2597	ev_child_start (EV_P_ ev_child *w)
2412	{	2598	{
2413	#if EV_MULTIPLICITY	2599	#if EV_MULTIPLICITY
2414	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2600	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2415	#endif	2601	#endif
2416	if (expect_false (ev_is_active (w)))	2602	if (expect_false (ev_is_active (w)))
2417	return;	2603	return;
2418		2604
2419	EV_FREQUENT_CHECK;	2605	EV_FREQUENT_CHECK;
…		…
2571		2757
2572	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2758	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2573	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2759	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2574	}	2760	}
2575		2761
2576	void inline_size	2762	inline_size void
2577	check_2625 (EV_P)	2763	check_2625 (EV_P)
2578	{	2764	{
2579	/* kernels < 2.6.25 are borked	2765	/* kernels < 2.6.25 are borked
2580	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html	2766	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2581	*/	2767	*/
…		…
2594	return;	2780	return;
2595		2781
2596	fs_2625 = 1;	2782	fs_2625 = 1;
2597	}	2783	}
2598		2784
2599	void inline_size	2785	inline_size void
2600	infy_init (EV_P)	2786	infy_init (EV_P)
2601	{	2787	{
2602	if (fs_fd != -2)	2788	if (fs_fd != -2)
2603	return;	2789	return;
2604		2790
…		…
2614	ev_set_priority (&fs_w, EV_MAXPRI);	2800	ev_set_priority (&fs_w, EV_MAXPRI);
2615	ev_io_start (EV_A_ &fs_w);	2801	ev_io_start (EV_A_ &fs_w);
2616	}	2802	}
2617	}	2803	}
2618		2804
2619	void inline_size	2805	inline_size void
2620	infy_fork (EV_P)	2806	infy_fork (EV_P)
2621	{	2807	{
2622	int slot;	2808	int slot;
2623		2809
2624	if (fs_fd < 0)	2810	if (fs_fd < 0)
…		…
2933	if (expect_false (ev_is_active (w)))	3119	if (expect_false (ev_is_active (w)))
2934	return;	3120	return;
2935		3121
2936	{	3122	{
2937	struct ev_loop *loop = w->other;	3123	struct ev_loop *loop = w->other;
2938	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3124	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2939	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3125	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2940	}	3126	}
2941		3127
2942	EV_FREQUENT_CHECK;	3128	EV_FREQUENT_CHECK;
2943		3129
…		…
3126	ev_timer_set (&once->to, timeout, 0.);	3312	ev_timer_set (&once->to, timeout, 0.);
3127	ev_timer_start (EV_A_ &once->to);	3313	ev_timer_start (EV_A_ &once->to);
3128	}	3314	}
3129	}	3315	}
3130		3316
		3317	/*****************************************************************************/
		3318
		3319	#if EV_WALK_ENABLE
		3320	void
		3321	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3322	{
		3323	int i, j;
		3324	ev_watcher_list *wl, *wn;
		3325
		3326	if (types & (EV_IO | EV_EMBED))
		3327	for (i = 0; i < anfdmax; ++i)
		3328	for (wl = anfds [i].head; wl; )
		3329	{
		3330	wn = wl->next;
		3331
		3332	#if EV_EMBED_ENABLE
		3333	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3334	{
		3335	if (types & EV_EMBED)
		3336	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3337	}
		3338	else
		3339	#endif
		3340	#if EV_USE_INOTIFY
		3341	if (ev_cb ((ev_io *)wl) == infy_cb)
		3342	;
		3343	else
		3344	#endif
		3345	if ((ev_io *)wl != &pipe_w)
		3346	if (types & EV_IO)
		3347	cb (EV_A_ EV_IO, wl);
		3348
		3349	wl = wn;
		3350	}
		3351
		3352	if (types & (EV_TIMER | EV_STAT))
		3353	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3354	#if EV_STAT_ENABLE
		3355	/*TODO: timer is not always active*/
		3356	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3357	{
		3358	if (types & EV_STAT)
		3359	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3360	}
		3361	else
		3362	#endif
		3363	if (types & EV_TIMER)
		3364	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3365
		3366	#if EV_PERIODIC_ENABLE
		3367	if (types & EV_PERIODIC)
		3368	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3369	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3370	#endif
		3371
		3372	#if EV_IDLE_ENABLE
		3373	if (types & EV_IDLE)
		3374	for (j = NUMPRI; i--; )
		3375	for (i = idlecnt [j]; i--; )
		3376	cb (EV_A_ EV_IDLE, idles [j][i]);
		3377	#endif
		3378
		3379	#if EV_FORK_ENABLE
		3380	if (types & EV_FORK)
		3381	for (i = forkcnt; i--; )
		3382	if (ev_cb (forks [i]) != embed_fork_cb)
		3383	cb (EV_A_ EV_FORK, forks [i]);
		3384	#endif
		3385
		3386	#if EV_ASYNC_ENABLE
		3387	if (types & EV_ASYNC)
		3388	for (i = asynccnt; i--; )
		3389	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3390	#endif
		3391
		3392	if (types & EV_PREPARE)
		3393	for (i = preparecnt; i--; )
		3394	#if EV_EMBED_ENABLE
		3395	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3396	#endif
		3397	cb (EV_A_ EV_PREPARE, prepares [i]);
		3398
		3399	if (types & EV_CHECK)
		3400	for (i = checkcnt; i--; )
		3401	cb (EV_A_ EV_CHECK, checks [i]);
		3402
		3403	if (types & EV_SIGNAL)
		3404	for (i = 0; i < signalmax; ++i)
		3405	for (wl = signals [i].head; wl; )
		3406	{
		3407	wn = wl->next;
		3408	cb (EV_A_ EV_SIGNAL, wl);
		3409	wl = wn;
		3410	}
		3411
		3412	if (types & EV_CHILD)
		3413	for (i = EV_PID_HASHSIZE; i--; )
		3414	for (wl = childs [i]; wl; )
		3415	{
		3416	wn = wl->next;
		3417	cb (EV_A_ EV_CHILD, wl);
		3418	wl = wn;
		3419	}
		3420	/* EV_STAT 0x00001000 /* stat data changed */
		3421	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3422	}
		3423	#endif
		3424
3131	#if EV_MULTIPLICITY	3425	#if EV_MULTIPLICITY
3132	#include "ev_wrap.h"	3426	#include "ev_wrap.h"
3133	#endif	3427	#endif
3134		3428
3135	#ifdef __cplusplus	3429	#ifdef __cplusplus

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