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Comparing libev/ev.c (file contents):
Revision 1.243 by root, Fri May 9 15:52:13 2008 UTC vs.
Revision 1.280 by root, Sat Mar 14 04:45:39 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	# endif
		63
52	# if HAVE_CLOCK_GETTIME	64	# if HAVE_CLOCK_GETTIME
53	# ifndef EV_USE_MONOTONIC	65	# ifndef EV_USE_MONOTONIC
54	# define EV_USE_MONOTONIC 1	66	# define EV_USE_MONOTONIC 1
55	# endif	67	# endif
56	# ifndef EV_USE_REALTIME	68	# ifndef EV_USE_REALTIME
57	# define EV_USE_REALTIME 1	69	# define EV_USE_REALTIME 0
58	# endif	70	# endif
59	# else	71	# else
60	# ifndef EV_USE_MONOTONIC	72	# ifndef EV_USE_MONOTONIC
61	# define EV_USE_MONOTONIC 0	73	# define EV_USE_MONOTONIC 0
62	# endif	74	# endif
…		…
126	# define EV_USE_EVENTFD 1	138	# define EV_USE_EVENTFD 1
127	# else	139	# else
128	# define EV_USE_EVENTFD 0	140	# define EV_USE_EVENTFD 0
129	# endif	141	# endif
130	# endif	142	# endif
131		143
132	#endif	144	#endif
133		145
134	#include <math.h>	146	#include <math.h>
135	#include <stdlib.h>	147	#include <stdlib.h>
136	#include <fcntl.h>	148	#include <fcntl.h>
…		…
154	#ifndef _WIN32	166	#ifndef _WIN32
155	# include <sys/time.h>	167	# include <sys/time.h>
156	# include <sys/wait.h>	168	# include <sys/wait.h>
157	# include <unistd.h>	169	# include <unistd.h>
158	#else	170	#else
		171	# include <io.h>
159	# define WIN32_LEAN_AND_MEAN	172	# define WIN32_LEAN_AND_MEAN
160	# include <windows.h>	173	# include <windows.h>
161	# ifndef EV_SELECT_IS_WINSOCKET	174	# ifndef EV_SELECT_IS_WINSOCKET
162	# define EV_SELECT_IS_WINSOCKET 1	175	# define EV_SELECT_IS_WINSOCKET 1
163	# endif	176	# endif
164	#endif	177	#endif
165		178
166	/* this block tries to deduce configuration from header-defined symbols and defaults */	179	/* this block tries to deduce configuration from header-defined symbols and defaults */
167		180
		181	#ifndef EV_USE_CLOCK_SYSCALL
		182	# if __linux && __GLIBC__ >= 2
		183	# define EV_USE_CLOCK_SYSCALL 1
		184	# else
		185	# define EV_USE_CLOCK_SYSCALL 0
		186	# endif
		187	#endif
		188
168	#ifndef EV_USE_MONOTONIC	189	#ifndef EV_USE_MONOTONIC
		190	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
		191	# define EV_USE_MONOTONIC 1
		192	# else
169	# define EV_USE_MONOTONIC 0	193	# define EV_USE_MONOTONIC 0
		194	# endif
170	#endif	195	#endif
171		196
172	#ifndef EV_USE_REALTIME	197	#ifndef EV_USE_REALTIME
173	# define EV_USE_REALTIME 0	198	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174	#endif	199	#endif
175		200
176	#ifndef EV_USE_NANOSLEEP	201	#ifndef EV_USE_NANOSLEEP
		202	# if _POSIX_C_SOURCE >= 199309L
		203	# define EV_USE_NANOSLEEP 1
		204	# else
177	# define EV_USE_NANOSLEEP 0	205	# define EV_USE_NANOSLEEP 0
		206	# endif
178	#endif	207	#endif
179		208
180	#ifndef EV_USE_SELECT	209	#ifndef EV_USE_SELECT
181	# define EV_USE_SELECT 1	210	# define EV_USE_SELECT 1
182	#endif	211	#endif
…		…
235	# else	264	# else
236	# define EV_USE_EVENTFD 0	265	# define EV_USE_EVENTFD 0
237	# endif	266	# endif
238	#endif	267	#endif
239		268
		269	#if 0 /* debugging */
		270	# define EV_VERIFY 3
		271	# define EV_USE_4HEAP 1
		272	# define EV_HEAP_CACHE_AT 1
		273	#endif
		274
		275	#ifndef EV_VERIFY
		276	# define EV_VERIFY !EV_MINIMAL
		277	#endif
		278
240	#ifndef EV_USE_4HEAP	279	#ifndef EV_USE_4HEAP
241	# define EV_USE_4HEAP !EV_MINIMAL	280	# define EV_USE_4HEAP !EV_MINIMAL
242	#endif	281	#endif
243		282
244	#ifndef EV_HEAP_CACHE_AT	283	#ifndef EV_HEAP_CACHE_AT
…		…
267	# include <sys/select.h>	306	# include <sys/select.h>
268	# endif	307	# endif
269	#endif	308	#endif
270		309
271	#if EV_USE_INOTIFY	310	#if EV_USE_INOTIFY
		311	# include <sys/utsname.h>
		312	# include <sys/statfs.h>
272	# include <sys/inotify.h>	313	# include <sys/inotify.h>
		314	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
		315	# ifndef IN_DONT_FOLLOW
		316	# undef EV_USE_INOTIFY
		317	# define EV_USE_INOTIFY 0
		318	# endif
273	#endif	319	#endif
274		320
275	#if EV_SELECT_IS_WINSOCKET	321	#if EV_SELECT_IS_WINSOCKET
276	# include <winsock.h>	322	# include <winsock.h>
		323	#endif
		324
		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
277	#endif	332	#endif
278		333
279	#if EV_USE_EVENTFD	334	#if EV_USE_EVENTFD
280	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	335	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
281	# include <stdint.h>	336	# include <stdint.h>
…		…
287	}	342	}
288	# endif	343	# endif
289	#endif	344	#endif
290		345
291	/**/	346	/**/
		347
		348	#if EV_VERIFY >= 3
		349	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
		350	#else
		351	# define EV_FREQUENT_CHECK do { } while (0)
		352	#endif
292		353
293	/*	354	/*
294	* This is used to avoid floating point rounding problems.	355	* This is used to avoid floating point rounding problems.
295	* It is added to ev_rt_now when scheduling periodics	356	* It is added to ev_rt_now when scheduling periodics
296	* to ensure progress, time-wise, even when rounding	357	* to ensure progress, time-wise, even when rounding
…		…
336	typedef ev_watcher_time *WT;	397	typedef ev_watcher_time *WT;
337		398
338	#define ev_active(w) ((W)(w))->active	399	#define ev_active(w) ((W)(w))->active
339	#define ev_at(w) ((WT)(w))->at	400	#define ev_at(w) ((WT)(w))->at
340		401
341	#if EV_USE_MONOTONIC	402	#if EV_USE_REALTIME
342	/* sig_atomic_t is used to avoid per-thread variables or locking but still */	403	/* 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 */	404	/* giving it a reasonably high chance of working on typical architetcures */
		405	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		406	#endif
		407
		408	#if EV_USE_MONOTONIC
344	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	409	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
345	#endif	410	#endif
346		411
347	#ifdef _WIN32	412	#ifdef _WIN32
348	# include "ev_win32.c"	413	# include "ev_win32.c"
…		…
357	{	422	{
358	syserr_cb = cb;	423	syserr_cb = cb;
359	}	424	}
360		425
361	static void noinline	426	static void noinline
362	syserr (const char *msg)	427	ev_syserr (const char *msg)
363	{	428	{
364	if (!msg)	429	if (!msg)
365	msg = "(libev) system error";	430	msg = "(libev) system error";
366		431
367	if (syserr_cb)	432	if (syserr_cb)
…		…
418	typedef struct	483	typedef struct
419	{	484	{
420	WL head;	485	WL head;
421	unsigned char events;	486	unsigned char events;
422	unsigned char reify;	487	unsigned char reify;
		488	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
		489	unsigned char unused;
		490	#if EV_USE_EPOLL
		491	unsigned int egen; /* generation counter to counter epoll bugs */
		492	#endif
423	#if EV_SELECT_IS_WINSOCKET	493	#if EV_SELECT_IS_WINSOCKET
424	SOCKET handle;	494	SOCKET handle;
425	#endif	495	#endif
426	} ANFD;	496	} ANFD;
427		497
…		…
444	typedef struct {	514	typedef struct {
445	ev_tstamp at;	515	ev_tstamp at;
446	WT w;	516	WT w;
447	} ANHE;	517	} ANHE;
448		518
449	#define ANHE_w(he) (he).w /* access watcher, read-write */	519	#define ANHE_w(he) (he).w /* access watcher, read-write */
450	#define ANHE_at(he) (he).at /* access cached at, read-only */	520	#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 */	521	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
452	#else	522	#else
453	typedef WT ANHE;	523	typedef WT ANHE;
454		524
455	#define ANHE_w(he) (he)	525	#define ANHE_w(he) (he)
456	#define ANHE_at(he) (he)->at	526	#define ANHE_at(he) (he)->at
457	#define ANHE_at_set(he)	527	#define ANHE_at_cache(he)
458	#endif	528	#endif
459		529
460	#if EV_MULTIPLICITY	530	#if EV_MULTIPLICITY
461		531
462	struct ev_loop	532	struct ev_loop
…		…
487		557
488	ev_tstamp	558	ev_tstamp
489	ev_time (void)	559	ev_time (void)
490	{	560	{
491	#if EV_USE_REALTIME	561	#if EV_USE_REALTIME
		562	if (expect_true (have_realtime))
		563	{
492	struct timespec ts;	564	struct timespec ts;
493	clock_gettime (CLOCK_REALTIME, &ts);	565	clock_gettime (CLOCK_REALTIME, &ts);
494	return ts.tv_sec + ts.tv_nsec * 1e-9;	566	return ts.tv_sec + ts.tv_nsec * 1e-9;
495	#else	567	}
		568	#endif
		569
496	struct timeval tv;	570	struct timeval tv;
497	gettimeofday (&tv, 0);	571	gettimeofday (&tv, 0);
498	return tv.tv_sec + tv.tv_usec * 1e-6;	572	return tv.tv_sec + tv.tv_usec * 1e-6;
499	#endif
500	}	573	}
501		574
502	ev_tstamp inline_size	575	ev_tstamp inline_size
503	get_clock (void)	576	get_clock (void)
504	{	577	{
…		…
540	struct timeval tv;	613	struct timeval tv;
541		614
542	tv.tv_sec = (time_t)delay;	615	tv.tv_sec = (time_t)delay;
543	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	616	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
544		617
		618	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		619	/* somehting nto guaranteed by newer posix versions, but guaranteed */
		620	/* by older ones */
545	select (0, 0, 0, 0, &tv);	621	select (0, 0, 0, 0, &tv);
546	#endif	622	#endif
547	}	623	}
548	}	624	}
549		625
…		…
576	array_realloc (int elem, void *base, int *cur, int cnt)	652	array_realloc (int elem, void *base, int *cur, int cnt)
577	{	653	{
578	*cur = array_nextsize (elem, *cur, cnt);	654	*cur = array_nextsize (elem, *cur, cnt);
579	return ev_realloc (base, elem * *cur);	655	return ev_realloc (base, elem * *cur);
580	}	656	}
		657
		658	#define array_init_zero(base,count) \
		659	memset ((void *)(base), 0, sizeof (*(base)) * (count))
581		660
582	#define array_needsize(type,base,cur,cnt,init) \	661	#define array_needsize(type,base,cur,cnt,init) \
583	if (expect_false ((cnt) > (cur))) \	662	if (expect_false ((cnt) > (cur))) \
584	{ \	663	{ \
585	int ocur_ = (cur); \	664	int ocur_ = (cur); \
…		…
597	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	676	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
598	}	677	}
599	#endif	678	#endif
600		679
601	#define array_free(stem, idx) \	680	#define array_free(stem, idx) \
602	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	681	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
603		682
604	/*****************************************************************************/	683	/*****************************************************************************/
605		684
606	void noinline	685	void noinline
607	ev_feed_event (EV_P_ void *w, int revents)	686	ev_feed_event (EV_P_ void *w, int revents)
…		…
629	ev_feed_event (EV_A_ events [i], type);	708	ev_feed_event (EV_A_ events [i], type);
630	}	709	}
631		710
632	/*****************************************************************************/	711	/*****************************************************************************/
633		712
634	void inline_size
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	713	void inline_speed
648	fd_event (EV_P_ int fd, int revents)	714	fd_event (EV_P_ int fd, int revents)
649	{	715	{
650	ANFD *anfd = anfds + fd;	716	ANFD *anfd = anfds + fd;
651	ev_io *w;	717	ev_io *w;
…		…
683	events |= (unsigned char)w->events;	749	events |= (unsigned char)w->events;
684		750
685	#if EV_SELECT_IS_WINSOCKET	751	#if EV_SELECT_IS_WINSOCKET
686	if (events)	752	if (events)
687	{	753	{
688	unsigned long argp;	754	unsigned long arg;
689	#ifdef EV_FD_TO_WIN32_HANDLE	755	#ifdef EV_FD_TO_WIN32_HANDLE
690	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	756	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
691	#else	757	#else
692	anfd->handle = _get_osfhandle (fd);	758	anfd->handle = _get_osfhandle (fd);
693	#endif	759	#endif
694	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	760	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
695	}	761	}
696	#endif	762	#endif
697		763
698	{	764	{
699	unsigned char o_events = anfd->events;	765	unsigned char o_events = anfd->events;
…		…
752	{	818	{
753	int fd;	819	int fd;
754		820
755	for (fd = 0; fd < anfdmax; ++fd)	821	for (fd = 0; fd < anfdmax; ++fd)
756	if (anfds [fd].events)	822	if (anfds [fd].events)
757	if (!fd_valid (fd) == -1 && errno == EBADF)	823	if (!fd_valid (fd) && errno == EBADF)
758	fd_kill (EV_A_ fd);	824	fd_kill (EV_A_ fd);
759	}	825	}
760		826
761	/* called on ENOMEM in select/poll to kill some fds and retry */	827	/* called on ENOMEM in select/poll to kill some fds and retry */
762	static void noinline	828	static void noinline
…		…
780		846
781	for (fd = 0; fd < anfdmax; ++fd)	847	for (fd = 0; fd < anfdmax; ++fd)
782	if (anfds [fd].events)	848	if (anfds [fd].events)
783	{	849	{
784	anfds [fd].events = 0;	850	anfds [fd].events = 0;
		851	anfds [fd].emask = 0;
785	fd_change (EV_A_ fd, EV_IOFDSET | 1);	852	fd_change (EV_A_ fd, EV_IOFDSET | 1);
786	}	853	}
787	}	854	}
788		855
789	/*****************************************************************************/	856	/*****************************************************************************/
…		…
802	*/	869	*/
803	#if EV_USE_4HEAP	870	#if EV_USE_4HEAP
804		871
805	#define DHEAP 4	872	#define DHEAP 4
806	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	873	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
807		874	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
808	/* towards the root */	875	#define UPHEAP_DONE(p,k) ((p) == (k))
809	void inline_speed
810	upheap (ANHE *heap, int k)
811	{
812	ANHE he = heap [k];
813
814	for (;;)
815	{
816	int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
817
818	if (p == k || ANHE_at (heap [p]) <= ANHE_at (he))
819	break;
820
821	heap [k] = heap [p];
822	ev_active (ANHE_w (heap [k])) = k;
823	k = p;
824	}
825
826	ev_active (ANHE_w (he)) = k;
827	heap [k] = he;
828	}
829		876
830	/* away from the root */	877	/* away from the root */
831	void inline_speed	878	void inline_speed
832	downheap (ANHE *heap, int N, int k)	879	downheap (ANHE *heap, int N, int k)
833	{	880	{
…		…
836		883
837	for (;;)	884	for (;;)
838	{	885	{
839	ev_tstamp minat;	886	ev_tstamp minat;
840	ANHE *minpos;	887	ANHE *minpos;
841	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0;	888	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
842		889
843	// find minimum child	890	/* find minimum child */
844	if (expect_true (pos + DHEAP - 1 < E))	891	if (expect_true (pos + DHEAP - 1 < E))
845	{	892	{
846	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));	893	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
847	if (ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));	894	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
848	if (ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));	895	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
849	if (ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));	896	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
850	}	897	}
851	else if (pos < E)	898	else if (pos < E)
852	{	899	{
853	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));	900	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
854	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));	901	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
…		…
859	break;	906	break;
860		907
861	if (ANHE_at (he) <= minat)	908	if (ANHE_at (he) <= minat)
862	break;	909	break;
863		910
		911	heap [k] = *minpos;
864	ev_active (ANHE_w (*minpos)) = k;	912	ev_active (ANHE_w (*minpos)) = k;
865	heap [k] = *minpos;
866		913
867	k = minpos - heap;	914	k = minpos - heap;
868	}	915	}
869		916
		917	heap [k] = he;
870	ev_active (ANHE_w (he)) = k;	918	ev_active (ANHE_w (he)) = k;
871	heap [k] = he;
872	}	919	}
873		920
874	#else // 4HEAP	921	#else /* 4HEAP */
875		922
876	#define HEAP0 1	923	#define HEAP0 1
877		924	#define HPARENT(k) ((k) >> 1)
878	/* towards the root */	925	#define UPHEAP_DONE(p,k) (!(p))
879	void inline_speed
880	upheap (ANHE *heap, int k)
881	{
882	ANHE he = heap [k];
883
884	for (;;)
885	{
886	int p = k >> 1;
887
888	/* maybe we could use a dummy element at heap [0]? */
889	if (!p || ANHE_at (heap [p]) <= ANHE_at (he))
890	break;
891
892	heap [k] = heap [p];
893	ev_active (ANHE_w (heap [k])) = k;
894	k = p;
895	}
896
897	heap [k] = he;
898	ev_active (ANHE_w (heap [k])) = k;
899	}
900		926
901	/* away from the root */	927	/* away from the root */
902	void inline_speed	928	void inline_speed
903	downheap (ANHE *heap, int N, int k)	929	downheap (ANHE *heap, int N, int k)
904	{	930	{
…		…
906		932
907	for (;;)	933	for (;;)
908	{	934	{
909	int c = k << 1;	935	int c = k << 1;
910		936
911	if (c > N)	937	if (c > N + HEAP0 - 1)
912	break;	938	break;
913		939
914	c += c + 1 < N && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])	940	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
915	? 1 : 0;	941	? 1 : 0;
916		942
917	if (ANHE_at (he) <= ANHE_at (heap [c]))	943	if (ANHE_at (he) <= ANHE_at (heap [c]))
918	break;	944	break;
919		945
…		…
926	heap [k] = he;	952	heap [k] = he;
927	ev_active (ANHE_w (he)) = k;	953	ev_active (ANHE_w (he)) = k;
928	}	954	}
929	#endif	955	#endif
930		956
		957	/* towards the root */
		958	void inline_speed
		959	upheap (ANHE *heap, int k)
		960	{
		961	ANHE he = heap [k];
		962
		963	for (;;)
		964	{
		965	int p = HPARENT (k);
		966
		967	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		968	break;
		969
		970	heap [k] = heap [p];
		971	ev_active (ANHE_w (heap [k])) = k;
		972	k = p;
		973	}
		974
		975	heap [k] = he;
		976	ev_active (ANHE_w (he)) = k;
		977	}
		978
931	void inline_size	979	void inline_size
932	adjustheap (ANHE *heap, int N, int k)	980	adjustheap (ANHE *heap, int N, int k)
933	{	981	{
		982	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
934	upheap (heap, k);	983	upheap (heap, k);
		984	else
935	downheap (heap, N, k);	985	downheap (heap, N, k);
		986	}
		987
		988	/* rebuild the heap: this function is used only once and executed rarely */
		989	void inline_size
		990	reheap (ANHE *heap, int N)
		991	{
		992	int i;
		993
		994	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		995	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		996	for (i = 0; i < N; ++i)
		997	upheap (heap, i + HEAP0);
936	}	998	}
937		999
938	/*****************************************************************************/	1000	/*****************************************************************************/
939		1001
940	typedef struct	1002	typedef struct
…		…
946	static ANSIG *signals;	1008	static ANSIG *signals;
947	static int signalmax;	1009	static int signalmax;
948		1010
949	static EV_ATOMIC_T gotsig;	1011	static EV_ATOMIC_T gotsig;
950		1012
951	void inline_size
952	signals_init (ANSIG *base, int count)
953	{
954	while (count--)
955	{
956	base->head = 0;
957	base->gotsig = 0;
958
959	++base;
960	}
961	}
962
963	/*****************************************************************************/	1013	/*****************************************************************************/
964		1014
965	void inline_speed	1015	void inline_speed
966	fd_intern (int fd)	1016	fd_intern (int fd)
967	{	1017	{
968	#ifdef _WIN32	1018	#ifdef _WIN32
969	int arg = 1;	1019	unsigned long arg = 1;
970	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1020	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
971	#else	1021	#else
972	fcntl (fd, F_SETFD, FD_CLOEXEC);	1022	fcntl (fd, F_SETFD, FD_CLOEXEC);
973	fcntl (fd, F_SETFL, O_NONBLOCK);	1023	fcntl (fd, F_SETFL, O_NONBLOCK);
974	#endif	1024	#endif
…		…
988	}	1038	}
989	else	1039	else
990	#endif	1040	#endif
991	{	1041	{
992	while (pipe (evpipe))	1042	while (pipe (evpipe))
993	syserr ("(libev) error creating signal/async pipe");	1043	ev_syserr ("(libev) error creating signal/async pipe");
994		1044
995	fd_intern (evpipe [0]);	1045	fd_intern (evpipe [0]);
996	fd_intern (evpipe [1]);	1046	fd_intern (evpipe [1]);
997	ev_io_set (&pipeev, evpipe [0], EV_READ);	1047	ev_io_set (&pipeev, evpipe [0], EV_READ);
998	}	1048	}
…		…
1088	ev_feed_signal_event (EV_P_ int signum)	1138	ev_feed_signal_event (EV_P_ int signum)
1089	{	1139	{
1090	WL w;	1140	WL w;
1091		1141
1092	#if EV_MULTIPLICITY	1142	#if EV_MULTIPLICITY
1093	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1143	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1094	#endif	1144	#endif
1095		1145
1096	--signum;	1146	--signum;
1097		1147
1098	if (signum < 0 || signum >= signalmax)	1148	if (signum < 0 || signum >= signalmax)
…		…
1227	/* kqueue is borked on everything but netbsd apparently */	1277	/* kqueue is borked on everything but netbsd apparently */
1228	/* it usually doesn't work correctly on anything but sockets and pipes */	1278	/* it usually doesn't work correctly on anything but sockets and pipes */
1229	flags &= ~EVBACKEND_KQUEUE;	1279	flags &= ~EVBACKEND_KQUEUE;
1230	#endif	1280	#endif
1231	#ifdef __APPLE__	1281	#ifdef __APPLE__
1232	// flags &= ~EVBACKEND_KQUEUE; for documentation	1282	/* only select works correctly on that "unix-certified" platform */
1233	flags &= ~EVBACKEND_POLL;	1283	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1284	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1234	#endif	1285	#endif
1235		1286
1236	return flags;	1287	return flags;
1237	}	1288	}
1238		1289
…		…
1275	static void noinline	1326	static void noinline
1276	loop_init (EV_P_ unsigned int flags)	1327	loop_init (EV_P_ unsigned int flags)
1277	{	1328	{
1278	if (!backend)	1329	if (!backend)
1279	{	1330	{
		1331	#if EV_USE_REALTIME
		1332	if (!have_realtime)
		1333	{
		1334	struct timespec ts;
		1335
		1336	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1337	have_realtime = 1;
		1338	}
		1339	#endif
		1340
1280	#if EV_USE_MONOTONIC	1341	#if EV_USE_MONOTONIC
		1342	if (!have_monotonic)
1281	{	1343	{
1282	struct timespec ts;	1344	struct timespec ts;
		1345
1283	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1346	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1284	have_monotonic = 1;	1347	have_monotonic = 1;
1285	}	1348	}
1286	#endif	1349	#endif
1287		1350
1288	ev_rt_now = ev_time ();	1351	ev_rt_now = ev_time ();
1289	mn_now = get_clock ();	1352	mn_now = get_clock ();
1290	now_floor = mn_now;	1353	now_floor = mn_now;
…		…
1458		1521
1459	postfork = 0;	1522	postfork = 0;
1460	}	1523	}
1461		1524
1462	#if EV_MULTIPLICITY	1525	#if EV_MULTIPLICITY
		1526
1463	struct ev_loop *	1527	struct ev_loop *
1464	ev_loop_new (unsigned int flags)	1528	ev_loop_new (unsigned int flags)
1465	{	1529	{
1466	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1530	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1467		1531
…		…
1485	void	1549	void
1486	ev_loop_fork (EV_P)	1550	ev_loop_fork (EV_P)
1487	{	1551	{
1488	postfork = 1; /* must be in line with ev_default_fork */	1552	postfork = 1; /* must be in line with ev_default_fork */
1489	}	1553	}
		1554
		1555	#if EV_VERIFY
		1556	static void noinline
		1557	verify_watcher (EV_P_ W w)
		1558	{
		1559	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1560
		1561	if (w->pending)
		1562	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1563	}
		1564
		1565	static void noinline
		1566	verify_heap (EV_P_ ANHE *heap, int N)
		1567	{
		1568	int i;
		1569
		1570	for (i = HEAP0; i < N + HEAP0; ++i)
		1571	{
		1572	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1573	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1574	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1575
		1576	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1577	}
		1578	}
		1579
		1580	static void noinline
		1581	array_verify (EV_P_ W *ws, int cnt)
		1582	{
		1583	while (cnt--)
		1584	{
		1585	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1586	verify_watcher (EV_A_ ws [cnt]);
		1587	}
		1588	}
		1589	#endif
		1590
		1591	void
		1592	ev_loop_verify (EV_P)
		1593	{
		1594	#if EV_VERIFY
		1595	int i;
		1596	WL w;
		1597
		1598	assert (activecnt >= -1);
		1599
		1600	assert (fdchangemax >= fdchangecnt);
		1601	for (i = 0; i < fdchangecnt; ++i)
		1602	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1603
		1604	assert (anfdmax >= 0);
		1605	for (i = 0; i < anfdmax; ++i)
		1606	for (w = anfds [i].head; w; w = w->next)
		1607	{
		1608	verify_watcher (EV_A_ (W)w);
		1609	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1610	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1611	}
		1612
		1613	assert (timermax >= timercnt);
		1614	verify_heap (EV_A_ timers, timercnt);
		1615
		1616	#if EV_PERIODIC_ENABLE
		1617	assert (periodicmax >= periodiccnt);
		1618	verify_heap (EV_A_ periodics, periodiccnt);
		1619	#endif
		1620
		1621	for (i = NUMPRI; i--; )
		1622	{
		1623	assert (pendingmax [i] >= pendingcnt [i]);
		1624	#if EV_IDLE_ENABLE
		1625	assert (idleall >= 0);
		1626	assert (idlemax [i] >= idlecnt [i]);
		1627	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		1628	#endif
		1629	}
		1630
		1631	#if EV_FORK_ENABLE
		1632	assert (forkmax >= forkcnt);
		1633	array_verify (EV_A_ (W *)forks, forkcnt);
		1634	#endif
		1635
		1636	#if EV_ASYNC_ENABLE
		1637	assert (asyncmax >= asynccnt);
		1638	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1639	#endif
		1640
		1641	assert (preparemax >= preparecnt);
		1642	array_verify (EV_A_ (W *)prepares, preparecnt);
		1643
		1644	assert (checkmax >= checkcnt);
		1645	array_verify (EV_A_ (W *)checks, checkcnt);
		1646
		1647	# if 0
		1648	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1649	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1490	#endif	1650	# endif
		1651	#endif
		1652	}
		1653
		1654	#endif /* multiplicity */
1491		1655
1492	#if EV_MULTIPLICITY	1656	#if EV_MULTIPLICITY
1493	struct ev_loop *	1657	struct ev_loop *
1494	ev_default_loop_init (unsigned int flags)	1658	ev_default_loop_init (unsigned int flags)
1495	#else	1659	#else
…		…
1528	{	1692	{
1529	#if EV_MULTIPLICITY	1693	#if EV_MULTIPLICITY
1530	struct ev_loop *loop = ev_default_loop_ptr;	1694	struct ev_loop *loop = ev_default_loop_ptr;
1531	#endif	1695	#endif
1532		1696
		1697	ev_default_loop_ptr = 0;
		1698
1533	#ifndef _WIN32	1699	#ifndef _WIN32
1534	ev_ref (EV_A); /* child watcher */	1700	ev_ref (EV_A); /* child watcher */
1535	ev_signal_stop (EV_A_ &childev);	1701	ev_signal_stop (EV_A_ &childev);
1536	#endif	1702	#endif
1537		1703
…		…
1543	{	1709	{
1544	#if EV_MULTIPLICITY	1710	#if EV_MULTIPLICITY
1545	struct ev_loop *loop = ev_default_loop_ptr;	1711	struct ev_loop *loop = ev_default_loop_ptr;
1546	#endif	1712	#endif
1547		1713
1548	if (backend)
1549	postfork = 1; /* must be in line with ev_loop_fork */	1714	postfork = 1; /* must be in line with ev_loop_fork */
1550	}	1715	}
1551		1716
1552	/*****************************************************************************/	1717	/*****************************************************************************/
1553		1718
1554	void	1719	void
…		…
1567	{	1732	{
1568	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1733	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1569		1734
1570	if (expect_true (p->w))	1735	if (expect_true (p->w))
1571	{	1736	{
1572	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1737	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1573		1738
1574	p->w->pending = 0;	1739	p->w->pending = 0;
1575	EV_CB_INVOKE (p->w, p->events);	1740	EV_CB_INVOKE (p->w, p->events);
		1741	EV_FREQUENT_CHECK;
1576	}	1742	}
1577	}	1743	}
1578	}	1744	}
1579		1745
1580	#if EV_IDLE_ENABLE	1746	#if EV_IDLE_ENABLE
…		…
1601	#endif	1767	#endif
1602		1768
1603	void inline_size	1769	void inline_size
1604	timers_reify (EV_P)	1770	timers_reify (EV_P)
1605	{	1771	{
		1772	EV_FREQUENT_CHECK;
		1773
1606	while (timercnt && ANHE_at (timers [HEAP0]) <= mn_now)	1774	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1607	{	1775	{
1608	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	1776	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
1609		1777
1610	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/	1778	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
1611		1779
1612	/* first reschedule or stop timer */	1780	/* first reschedule or stop timer */
1613	if (w->repeat)	1781	if (w->repeat)
1614	{	1782	{
1615	ev_at (w) += w->repeat;	1783	ev_at (w) += w->repeat;
1616	if (ev_at (w) < mn_now)	1784	if (ev_at (w) < mn_now)
1617	ev_at (w) = mn_now;	1785	ev_at (w) = mn_now;
1618		1786
1619	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1787	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1620		1788
1621	ANHE_at_set (timers [HEAP0]);	1789	ANHE_at_cache (timers [HEAP0]);
1622	downheap (timers, timercnt, HEAP0);	1790	downheap (timers, timercnt, HEAP0);
1623	}	1791	}
1624	else	1792	else
1625	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1793	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1626		1794
		1795	EV_FREQUENT_CHECK;
1627	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1796	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1628	}	1797	}
1629	}	1798	}
1630		1799
1631	#if EV_PERIODIC_ENABLE	1800	#if EV_PERIODIC_ENABLE
1632	void inline_size	1801	void inline_size
1633	periodics_reify (EV_P)	1802	periodics_reify (EV_P)
1634	{	1803	{
		1804	EV_FREQUENT_CHECK;
		1805
1635	while (periodiccnt && ANHE_at (periodics [HEAP0]) <= ev_rt_now)	1806	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1636	{	1807	{
1637	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	1808	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1638		1809
1639	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	1810	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
1640		1811
1641	/* first reschedule or stop timer */	1812	/* first reschedule or stop timer */
1642	if (w->reschedule_cb)	1813	if (w->reschedule_cb)
1643	{	1814	{
1644	ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);	1815	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1645		1816
1646	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));	1817	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1647		1818
1648	ANHE_at_set (periodics [HEAP0]);	1819	ANHE_at_cache (periodics [HEAP0]);
1649	downheap (periodics, periodiccnt, HEAP0);	1820	downheap (periodics, periodiccnt, HEAP0);
1650	}	1821	}
1651	else if (w->interval)	1822	else if (w->interval)
1652	{	1823	{
1653	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	1824	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1825	/* if next trigger time is not sufficiently in the future, put it there */
		1826	/* this might happen because of floating point inexactness */
1654	if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;	1827	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1828	{
		1829	ev_at (w) += w->interval;
1655		1830
1656	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));	1831	/* if interval is unreasonably low we might still have a time in the past */
		1832	/* so correct this. this will make the periodic very inexact, but the user */
		1833	/* has effectively asked to get triggered more often than possible */
		1834	if (ev_at (w) < ev_rt_now)
		1835	ev_at (w) = ev_rt_now;
		1836	}
1657		1837
1658	ANHE_at_set (periodics [HEAP0]);	1838	ANHE_at_cache (periodics [HEAP0]);
1659	downheap (periodics, periodiccnt, HEAP0);	1839	downheap (periodics, periodiccnt, HEAP0);
1660	}	1840	}
1661	else	1841	else
1662	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1842	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1663		1843
		1844	EV_FREQUENT_CHECK;
1664	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1845	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1665	}	1846	}
1666	}	1847	}
1667		1848
1668	static void noinline	1849	static void noinline
…		…
1678	if (w->reschedule_cb)	1859	if (w->reschedule_cb)
1679	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1860	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1680	else if (w->interval)	1861	else if (w->interval)
1681	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	1862	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1682		1863
1683	ANHE_at_set (periodics [i]);	1864	ANHE_at_cache (periodics [i]);
1684	}	1865	}
1685		1866
1686	/* we don't use floyds algorithm, uphead is simpler and is more cache-efficient */	1867	reheap (periodics, periodiccnt);
1687	/* also, this is easy and corretc for both 2-heaps and 4-heaps */
1688	for (i = 0; i < periodiccnt; ++i)
1689	upheap (periodics, i + HEAP0);
1690	}	1868	}
1691	#endif	1869	#endif
1692		1870
1693	void inline_speed	1871	void inline_speed
1694	time_update (EV_P_ ev_tstamp max_block)	1872	time_update (EV_P_ ev_tstamp max_block)
…		…
1752	/* adjust timers. this is easy, as the offset is the same for all of them */	1930	/* adjust timers. this is easy, as the offset is the same for all of them */
1753	for (i = 0; i < timercnt; ++i)	1931	for (i = 0; i < timercnt; ++i)
1754	{	1932	{
1755	ANHE *he = timers + i + HEAP0;	1933	ANHE *he = timers + i + HEAP0;
1756	ANHE_w (*he)->at += ev_rt_now - mn_now;	1934	ANHE_w (*he)->at += ev_rt_now - mn_now;
1757	ANHE_at_set (*he);	1935	ANHE_at_cache (*he);
1758	}	1936	}
1759	}	1937	}
1760		1938
1761	mn_now = ev_rt_now;	1939	mn_now = ev_rt_now;
1762	}	1940	}
…		…
1772	ev_unref (EV_P)	1950	ev_unref (EV_P)
1773	{	1951	{
1774	--activecnt;	1952	--activecnt;
1775	}	1953	}
1776		1954
		1955	void
		1956	ev_now_update (EV_P)
		1957	{
		1958	time_update (EV_A_ 1e100);
		1959	}
		1960
1777	static int loop_done;	1961	static int loop_done;
1778		1962
1779	void	1963	void
1780	ev_loop (EV_P_ int flags)	1964	ev_loop (EV_P_ int flags)
1781	{	1965	{
…		…
1783		1967
1784	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	1968	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1785		1969
1786	do	1970	do
1787	{	1971	{
		1972	#if EV_VERIFY >= 2
		1973	ev_loop_verify (EV_A);
		1974	#endif
		1975
1788	#ifndef _WIN32	1976	#ifndef _WIN32
1789	if (expect_false (curpid)) /* penalise the forking check even more */	1977	if (expect_false (curpid)) /* penalise the forking check even more */
1790	if (expect_false (getpid () != curpid))	1978	if (expect_false (getpid () != curpid))
1791	{	1979	{
1792	curpid = getpid ();	1980	curpid = getpid ();
…		…
1985	int fd = w->fd;	2173	int fd = w->fd;
1986		2174
1987	if (expect_false (ev_is_active (w)))	2175	if (expect_false (ev_is_active (w)))
1988	return;	2176	return;
1989		2177
1990	assert (("ev_io_start called with negative fd", fd >= 0));	2178	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2179	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE))));
		2180
		2181	EV_FREQUENT_CHECK;
1991		2182
1992	ev_start (EV_A_ (W)w, 1);	2183	ev_start (EV_A_ (W)w, 1);
1993	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2184	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1994	wlist_add (&anfds[fd].head, (WL)w);	2185	wlist_add (&anfds[fd].head, (WL)w);
1995		2186
1996	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2187	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1997	w->events &= ~EV_IOFDSET;	2188	w->events &= ~EV_IOFDSET;
		2189
		2190	EV_FREQUENT_CHECK;
1998	}	2191	}
1999		2192
2000	void noinline	2193	void noinline
2001	ev_io_stop (EV_P_ ev_io *w)	2194	ev_io_stop (EV_P_ ev_io *w)
2002	{	2195	{
2003	clear_pending (EV_A_ (W)w);	2196	clear_pending (EV_A_ (W)w);
2004	if (expect_false (!ev_is_active (w)))	2197	if (expect_false (!ev_is_active (w)))
2005	return;	2198	return;
2006		2199
2007	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2200	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		2201
		2202	EV_FREQUENT_CHECK;
2008		2203
2009	wlist_del (&anfds[w->fd].head, (WL)w);	2204	wlist_del (&anfds[w->fd].head, (WL)w);
2010	ev_stop (EV_A_ (W)w);	2205	ev_stop (EV_A_ (W)w);
2011		2206
2012	fd_change (EV_A_ w->fd, 1);	2207	fd_change (EV_A_ w->fd, 1);
		2208
		2209	EV_FREQUENT_CHECK;
2013	}	2210	}
2014		2211
2015	void noinline	2212	void noinline
2016	ev_timer_start (EV_P_ ev_timer *w)	2213	ev_timer_start (EV_P_ ev_timer *w)
2017	{	2214	{
2018	if (expect_false (ev_is_active (w)))	2215	if (expect_false (ev_is_active (w)))
2019	return;	2216	return;
2020		2217
2021	ev_at (w) += mn_now;	2218	ev_at (w) += mn_now;
2022		2219
2023	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2220	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2024		2221
		2222	EV_FREQUENT_CHECK;
		2223
		2224	++timercnt;
2025	ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1);	2225	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2026	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);	2226	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
2027	ANHE_w (timers [ev_active (w)]) = (WT)w;	2227	ANHE_w (timers [ev_active (w)]) = (WT)w;
2028	ANHE_at_set (timers [ev_active (w)]);	2228	ANHE_at_cache (timers [ev_active (w)]);
2029	upheap (timers, ev_active (w));	2229	upheap (timers, ev_active (w));
2030		2230
		2231	EV_FREQUENT_CHECK;
		2232
2031	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2233	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2032	}	2234	}
2033		2235
2034	void noinline	2236	void noinline
2035	ev_timer_stop (EV_P_ ev_timer *w)	2237	ev_timer_stop (EV_P_ ev_timer *w)
2036	{	2238	{
2037	clear_pending (EV_A_ (W)w);	2239	clear_pending (EV_A_ (W)w);
2038	if (expect_false (!ev_is_active (w)))	2240	if (expect_false (!ev_is_active (w)))
2039	return;	2241	return;
2040		2242
		2243	EV_FREQUENT_CHECK;
		2244
2041	{	2245	{
2042	int active = ev_active (w);	2246	int active = ev_active (w);
2043		2247
2044	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2248	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2045		2249
		2250	--timercnt;
		2251
2046	if (expect_true (active < timercnt + HEAP0 - 1))	2252	if (expect_true (active < timercnt + HEAP0))
2047	{	2253	{
2048	timers [active] = timers [timercnt + HEAP0 - 1];	2254	timers [active] = timers [timercnt + HEAP0];
2049	adjustheap (timers, timercnt, active);	2255	adjustheap (timers, timercnt, active);
2050	}	2256	}
2051
2052	--timercnt;
2053	}	2257	}
		2258
		2259	EV_FREQUENT_CHECK;
2054		2260
2055	ev_at (w) -= mn_now;	2261	ev_at (w) -= mn_now;
2056		2262
2057	ev_stop (EV_A_ (W)w);	2263	ev_stop (EV_A_ (W)w);
2058	}	2264	}
2059		2265
2060	void noinline	2266	void noinline
2061	ev_timer_again (EV_P_ ev_timer *w)	2267	ev_timer_again (EV_P_ ev_timer *w)
2062	{	2268	{
		2269	EV_FREQUENT_CHECK;
		2270
2063	if (ev_is_active (w))	2271	if (ev_is_active (w))
2064	{	2272	{
2065	if (w->repeat)	2273	if (w->repeat)
2066	{	2274	{
2067	ev_at (w) = mn_now + w->repeat;	2275	ev_at (w) = mn_now + w->repeat;
2068	ANHE_at_set (timers [ev_active (w)]);	2276	ANHE_at_cache (timers [ev_active (w)]);
2069	adjustheap (timers, timercnt, ev_active (w));	2277	adjustheap (timers, timercnt, ev_active (w));
2070	}	2278	}
2071	else	2279	else
2072	ev_timer_stop (EV_A_ w);	2280	ev_timer_stop (EV_A_ w);
2073	}	2281	}
2074	else if (w->repeat)	2282	else if (w->repeat)
2075	{	2283	{
2076	ev_at (w) = w->repeat;	2284	ev_at (w) = w->repeat;
2077	ev_timer_start (EV_A_ w);	2285	ev_timer_start (EV_A_ w);
2078	}	2286	}
		2287
		2288	EV_FREQUENT_CHECK;
2079	}	2289	}
2080		2290
2081	#if EV_PERIODIC_ENABLE	2291	#if EV_PERIODIC_ENABLE
2082	void noinline	2292	void noinline
2083	ev_periodic_start (EV_P_ ev_periodic *w)	2293	ev_periodic_start (EV_P_ ev_periodic *w)
…		…
2087		2297
2088	if (w->reschedule_cb)	2298	if (w->reschedule_cb)
2089	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2299	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2090	else if (w->interval)	2300	else if (w->interval)
2091	{	2301	{
2092	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2302	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2093	/* this formula differs from the one in periodic_reify because we do not always round up */	2303	/* this formula differs from the one in periodic_reify because we do not always round up */
2094	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2304	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2095	}	2305	}
2096	else	2306	else
2097	ev_at (w) = w->offset;	2307	ev_at (w) = w->offset;
2098		2308
		2309	EV_FREQUENT_CHECK;
		2310
		2311	++periodiccnt;
2099	ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1);	2312	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2100	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);	2313	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2101	ANHE_w (periodics [ev_active (w)]) = (WT)w;	2314	ANHE_w (periodics [ev_active (w)]) = (WT)w;
2102	ANHE_at_set (periodics [ev_active (w)]);	2315	ANHE_at_cache (periodics [ev_active (w)]);
2103	upheap (periodics, ev_active (w));	2316	upheap (periodics, ev_active (w));
2104		2317
		2318	EV_FREQUENT_CHECK;
		2319
2105	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2320	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2106	}	2321	}
2107		2322
2108	void noinline	2323	void noinline
2109	ev_periodic_stop (EV_P_ ev_periodic *w)	2324	ev_periodic_stop (EV_P_ ev_periodic *w)
2110	{	2325	{
2111	clear_pending (EV_A_ (W)w);	2326	clear_pending (EV_A_ (W)w);
2112	if (expect_false (!ev_is_active (w)))	2327	if (expect_false (!ev_is_active (w)))
2113	return;	2328	return;
2114		2329
		2330	EV_FREQUENT_CHECK;
		2331
2115	{	2332	{
2116	int active = ev_active (w);	2333	int active = ev_active (w);
2117		2334
2118	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2335	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2119		2336
		2337	--periodiccnt;
		2338
2120	if (expect_true (active < periodiccnt + HEAP0 - 1))	2339	if (expect_true (active < periodiccnt + HEAP0))
2121	{	2340	{
2122	periodics [active] = periodics [periodiccnt + HEAP0 - 1];	2341	periodics [active] = periodics [periodiccnt + HEAP0];
2123	adjustheap (periodics, periodiccnt, active);	2342	adjustheap (periodics, periodiccnt, active);
2124	}	2343	}
2125
2126	--periodiccnt;
2127	}	2344	}
		2345
		2346	EV_FREQUENT_CHECK;
2128		2347
2129	ev_stop (EV_A_ (W)w);	2348	ev_stop (EV_A_ (W)w);
2130	}	2349	}
2131		2350
2132	void noinline	2351	void noinline
…		…
2144		2363
2145	void noinline	2364	void noinline
2146	ev_signal_start (EV_P_ ev_signal *w)	2365	ev_signal_start (EV_P_ ev_signal *w)
2147	{	2366	{
2148	#if EV_MULTIPLICITY	2367	#if EV_MULTIPLICITY
2149	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2368	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2150	#endif	2369	#endif
2151	if (expect_false (ev_is_active (w)))	2370	if (expect_false (ev_is_active (w)))
2152	return;	2371	return;
2153		2372
2154	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2373	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2155		2374
2156	evpipe_init (EV_A);	2375	evpipe_init (EV_A);
		2376
		2377	EV_FREQUENT_CHECK;
2157		2378
2158	{	2379	{
2159	#ifndef _WIN32	2380	#ifndef _WIN32
2160	sigset_t full, prev;	2381	sigset_t full, prev;
2161	sigfillset (&full);	2382	sigfillset (&full);
2162	sigprocmask (SIG_SETMASK, &full, &prev);	2383	sigprocmask (SIG_SETMASK, &full, &prev);
2163	#endif	2384	#endif
2164		2385
2165	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2386	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2166		2387
2167	#ifndef _WIN32	2388	#ifndef _WIN32
2168	sigprocmask (SIG_SETMASK, &prev, 0);	2389	sigprocmask (SIG_SETMASK, &prev, 0);
2169	#endif	2390	#endif
2170	}	2391	}
…		…
2182	sigfillset (&sa.sa_mask);	2403	sigfillset (&sa.sa_mask);
2183	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2404	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2184	sigaction (w->signum, &sa, 0);	2405	sigaction (w->signum, &sa, 0);
2185	#endif	2406	#endif
2186	}	2407	}
		2408
		2409	EV_FREQUENT_CHECK;
2187	}	2410	}
2188		2411
2189	void noinline	2412	void noinline
2190	ev_signal_stop (EV_P_ ev_signal *w)	2413	ev_signal_stop (EV_P_ ev_signal *w)
2191	{	2414	{
2192	clear_pending (EV_A_ (W)w);	2415	clear_pending (EV_A_ (W)w);
2193	if (expect_false (!ev_is_active (w)))	2416	if (expect_false (!ev_is_active (w)))
2194	return;	2417	return;
2195		2418
		2419	EV_FREQUENT_CHECK;
		2420
2196	wlist_del (&signals [w->signum - 1].head, (WL)w);	2421	wlist_del (&signals [w->signum - 1].head, (WL)w);
2197	ev_stop (EV_A_ (W)w);	2422	ev_stop (EV_A_ (W)w);
2198		2423
2199	if (!signals [w->signum - 1].head)	2424	if (!signals [w->signum - 1].head)
2200	signal (w->signum, SIG_DFL);	2425	signal (w->signum, SIG_DFL);
		2426
		2427	EV_FREQUENT_CHECK;
2201	}	2428	}
2202		2429
2203	void	2430	void
2204	ev_child_start (EV_P_ ev_child *w)	2431	ev_child_start (EV_P_ ev_child *w)
2205	{	2432	{
2206	#if EV_MULTIPLICITY	2433	#if EV_MULTIPLICITY
2207	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2434	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2208	#endif	2435	#endif
2209	if (expect_false (ev_is_active (w)))	2436	if (expect_false (ev_is_active (w)))
2210	return;	2437	return;
2211		2438
		2439	EV_FREQUENT_CHECK;
		2440
2212	ev_start (EV_A_ (W)w, 1);	2441	ev_start (EV_A_ (W)w, 1);
2213	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2442	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2443
		2444	EV_FREQUENT_CHECK;
2214	}	2445	}
2215		2446
2216	void	2447	void
2217	ev_child_stop (EV_P_ ev_child *w)	2448	ev_child_stop (EV_P_ ev_child *w)
2218	{	2449	{
2219	clear_pending (EV_A_ (W)w);	2450	clear_pending (EV_A_ (W)w);
2220	if (expect_false (!ev_is_active (w)))	2451	if (expect_false (!ev_is_active (w)))
2221	return;	2452	return;
2222		2453
		2454	EV_FREQUENT_CHECK;
		2455
2223	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2456	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2224	ev_stop (EV_A_ (W)w);	2457	ev_stop (EV_A_ (W)w);
		2458
		2459	EV_FREQUENT_CHECK;
2225	}	2460	}
2226		2461
2227	#if EV_STAT_ENABLE	2462	#if EV_STAT_ENABLE
2228		2463
2229	# ifdef _WIN32	2464	# ifdef _WIN32
2230	# undef lstat	2465	# undef lstat
2231	# define lstat(a,b) _stati64 (a,b)	2466	# define lstat(a,b) _stati64 (a,b)
2232	# endif	2467	# endif
2233		2468
2234	#define DEF_STAT_INTERVAL 5.0074891	2469	#define DEF_STAT_INTERVAL 5.0074891
		2470	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2235	#define MIN_STAT_INTERVAL 0.1074891	2471	#define MIN_STAT_INTERVAL 0.1074891
2236		2472
2237	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2473	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2238		2474
2239	#if EV_USE_INOTIFY	2475	#if EV_USE_INOTIFY
2240	# define EV_INOTIFY_BUFSIZE 8192	2476	# define EV_INOTIFY_BUFSIZE 8192
…		…
2244	{	2480	{
2245	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);	2481	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);
2246		2482
2247	if (w->wd < 0)	2483	if (w->wd < 0)
2248	{	2484	{
		2485	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2249	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2486	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2250		2487
2251	/* monitor some parent directory for speedup hints */	2488	/* monitor some parent directory for speedup hints */
2252	/* note that exceeding the hardcoded limit is not a correctness issue, */	2489	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2253	/* but an efficiency issue only */	2490	/* but an efficiency issue only */
2254	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2491	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2255	{	2492	{
2256	char path [4096];	2493	char path [4096];
2257	strcpy (path, w->path);	2494	strcpy (path, w->path);
…		…
2261	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2498	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2262	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2499	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2263		2500
2264	char *pend = strrchr (path, '/');	2501	char *pend = strrchr (path, '/');
2265		2502
2266	if (!pend)	2503	if (!pend || pend == path)
2267	break; /* whoops, no '/', complain to your admin */	2504	break;
2268		2505
2269	*pend = 0;	2506	*pend = 0;
2270	w->wd = inotify_add_watch (fs_fd, path, mask);	2507	w->wd = inotify_add_watch (fs_fd, path, mask);
2271	}	2508	}
2272	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2509	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2273	}	2510	}
2274	}	2511	}
2275	else
2276	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2277		2512
2278	if (w->wd >= 0)	2513	if (w->wd >= 0)
		2514	{
2279	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2515	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2516
		2517	/* now local changes will be tracked by inotify, but remote changes won't */
		2518	/* unless the filesystem it known to be local, we therefore still poll */
		2519	/* also do poll on <2.6.25, but with normal frequency */
		2520	struct statfs sfs;
		2521
		2522	if (fs_2625 && !statfs (w->path, &sfs))
		2523	if (sfs.f_type == 0x1373 /* devfs */
		2524	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2525	|| sfs.f_type == 0x3153464a /* jfs */
		2526	|| sfs.f_type == 0x52654973 /* reiser3 */
		2527	|| sfs.f_type == 0x01021994 /* tempfs */
		2528	|| sfs.f_type == 0x58465342 /* xfs */)
		2529	return;
		2530
		2531	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2532	ev_timer_again (EV_A_ &w->timer);
		2533	}
2280	}	2534	}
2281		2535
2282	static void noinline	2536	static void noinline
2283	infy_del (EV_P_ ev_stat *w)	2537	infy_del (EV_P_ ev_stat *w)
2284	{	2538	{
…		…
2298		2552
2299	static void noinline	2553	static void noinline
2300	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2554	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2301	{	2555	{
2302	if (slot < 0)	2556	if (slot < 0)
2303	/* overflow, need to check for all hahs slots */	2557	/* overflow, need to check for all hash slots */
2304	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2558	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2305	infy_wd (EV_A_ slot, wd, ev);	2559	infy_wd (EV_A_ slot, wd, ev);
2306	else	2560	else
2307	{	2561	{
2308	WL w_;	2562	WL w_;
…		…
2314		2568
2315	if (w->wd == wd || wd == -1)	2569	if (w->wd == wd || wd == -1)
2316	{	2570	{
2317	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2571	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2318	{	2572	{
		2573	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2319	w->wd = -1;	2574	w->wd = -1;
2320	infy_add (EV_A_ w); /* re-add, no matter what */	2575	infy_add (EV_A_ w); /* re-add, no matter what */
2321	}	2576	}
2322		2577
2323	stat_timer_cb (EV_A_ &w->timer, 0);	2578	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2337	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2592	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2338	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2593	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2339	}	2594	}
2340		2595
2341	void inline_size	2596	void inline_size
		2597	check_2625 (EV_P)
		2598	{
		2599	/* kernels < 2.6.25 are borked
		2600	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2601	*/
		2602	struct utsname buf;
		2603	int major, minor, micro;
		2604
		2605	if (uname (&buf))
		2606	return;
		2607
		2608	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2609	return;
		2610
		2611	if (major < 2
		2612	|| (major == 2 && minor < 6)
		2613	|| (major == 2 && minor == 6 && micro < 25))
		2614	return;
		2615
		2616	fs_2625 = 1;
		2617	}
		2618
		2619	void inline_size
2342	infy_init (EV_P)	2620	infy_init (EV_P)
2343	{	2621	{
2344	if (fs_fd != -2)	2622	if (fs_fd != -2)
2345	return;	2623	return;
		2624
		2625	fs_fd = -1;
		2626
		2627	check_2625 (EV_A);
2346		2628
2347	fs_fd = inotify_init ();	2629	fs_fd = inotify_init ();
2348		2630
2349	if (fs_fd >= 0)	2631	if (fs_fd >= 0)
2350	{	2632	{
…		…
2378	w->wd = -1;	2660	w->wd = -1;
2379		2661
2380	if (fs_fd >= 0)	2662	if (fs_fd >= 0)
2381	infy_add (EV_A_ w); /* re-add, no matter what */	2663	infy_add (EV_A_ w); /* re-add, no matter what */
2382	else	2664	else
2383	ev_timer_start (EV_A_ &w->timer);	2665	ev_timer_again (EV_A_ &w->timer);
2384	}	2666	}
2385
2386	}	2667	}
2387	}	2668	}
2388		2669
		2670	#endif
		2671
		2672	#ifdef _WIN32
		2673	# define EV_LSTAT(p,b) _stati64 (p, b)
		2674	#else
		2675	# define EV_LSTAT(p,b) lstat (p, b)
2389	#endif	2676	#endif
2390		2677
2391	void	2678	void
2392	ev_stat_stat (EV_P_ ev_stat *w)	2679	ev_stat_stat (EV_P_ ev_stat *w)
2393	{	2680	{
…		…
2420	|| w->prev.st_atime != w->attr.st_atime	2707	|| w->prev.st_atime != w->attr.st_atime
2421	|| w->prev.st_mtime != w->attr.st_mtime	2708	|| w->prev.st_mtime != w->attr.st_mtime
2422	|| w->prev.st_ctime != w->attr.st_ctime	2709	|| w->prev.st_ctime != w->attr.st_ctime
2423	) {	2710	) {
2424	#if EV_USE_INOTIFY	2711	#if EV_USE_INOTIFY
		2712	if (fs_fd >= 0)
		2713	{
2425	infy_del (EV_A_ w);	2714	infy_del (EV_A_ w);
2426	infy_add (EV_A_ w);	2715	infy_add (EV_A_ w);
2427	ev_stat_stat (EV_A_ w); /* avoid race... */	2716	ev_stat_stat (EV_A_ w); /* avoid race... */
		2717	}
2428	#endif	2718	#endif
2429		2719
2430	ev_feed_event (EV_A_ w, EV_STAT);	2720	ev_feed_event (EV_A_ w, EV_STAT);
2431	}	2721	}
2432	}	2722	}
…		…
2435	ev_stat_start (EV_P_ ev_stat *w)	2725	ev_stat_start (EV_P_ ev_stat *w)
2436	{	2726	{
2437	if (expect_false (ev_is_active (w)))	2727	if (expect_false (ev_is_active (w)))
2438	return;	2728	return;
2439		2729
2440	/* since we use memcmp, we need to clear any padding data etc. */
2441	memset (&w->prev, 0, sizeof (ev_statdata));
2442	memset (&w->attr, 0, sizeof (ev_statdata));
2443
2444	ev_stat_stat (EV_A_ w);	2730	ev_stat_stat (EV_A_ w);
2445		2731
		2732	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2446	if (w->interval < MIN_STAT_INTERVAL)	2733	w->interval = MIN_STAT_INTERVAL;
2447	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2448		2734
2449	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2735	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2450	ev_set_priority (&w->timer, ev_priority (w));	2736	ev_set_priority (&w->timer, ev_priority (w));
2451		2737
2452	#if EV_USE_INOTIFY	2738	#if EV_USE_INOTIFY
2453	infy_init (EV_A);	2739	infy_init (EV_A);
2454		2740
2455	if (fs_fd >= 0)	2741	if (fs_fd >= 0)
2456	infy_add (EV_A_ w);	2742	infy_add (EV_A_ w);
2457	else	2743	else
2458	#endif	2744	#endif
2459	ev_timer_start (EV_A_ &w->timer);	2745	ev_timer_again (EV_A_ &w->timer);
2460		2746
2461	ev_start (EV_A_ (W)w, 1);	2747	ev_start (EV_A_ (W)w, 1);
		2748
		2749	EV_FREQUENT_CHECK;
2462	}	2750	}
2463		2751
2464	void	2752	void
2465	ev_stat_stop (EV_P_ ev_stat *w)	2753	ev_stat_stop (EV_P_ ev_stat *w)
2466	{	2754	{
2467	clear_pending (EV_A_ (W)w);	2755	clear_pending (EV_A_ (W)w);
2468	if (expect_false (!ev_is_active (w)))	2756	if (expect_false (!ev_is_active (w)))
2469	return;	2757	return;
2470		2758
		2759	EV_FREQUENT_CHECK;
		2760
2471	#if EV_USE_INOTIFY	2761	#if EV_USE_INOTIFY
2472	infy_del (EV_A_ w);	2762	infy_del (EV_A_ w);
2473	#endif	2763	#endif
2474	ev_timer_stop (EV_A_ &w->timer);	2764	ev_timer_stop (EV_A_ &w->timer);
2475		2765
2476	ev_stop (EV_A_ (W)w);	2766	ev_stop (EV_A_ (W)w);
		2767
		2768	EV_FREQUENT_CHECK;
2477	}	2769	}
2478	#endif	2770	#endif
2479		2771
2480	#if EV_IDLE_ENABLE	2772	#if EV_IDLE_ENABLE
2481	void	2773	void
…		…
2483	{	2775	{
2484	if (expect_false (ev_is_active (w)))	2776	if (expect_false (ev_is_active (w)))
2485	return;	2777	return;
2486		2778
2487	pri_adjust (EV_A_ (W)w);	2779	pri_adjust (EV_A_ (W)w);
		2780
		2781	EV_FREQUENT_CHECK;
2488		2782
2489	{	2783	{
2490	int active = ++idlecnt [ABSPRI (w)];	2784	int active = ++idlecnt [ABSPRI (w)];
2491		2785
2492	++idleall;	2786	++idleall;
2493	ev_start (EV_A_ (W)w, active);	2787	ev_start (EV_A_ (W)w, active);
2494		2788
2495	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	2789	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2496	idles [ABSPRI (w)][active - 1] = w;	2790	idles [ABSPRI (w)][active - 1] = w;
2497	}	2791	}
		2792
		2793	EV_FREQUENT_CHECK;
2498	}	2794	}
2499		2795
2500	void	2796	void
2501	ev_idle_stop (EV_P_ ev_idle *w)	2797	ev_idle_stop (EV_P_ ev_idle *w)
2502	{	2798	{
2503	clear_pending (EV_A_ (W)w);	2799	clear_pending (EV_A_ (W)w);
2504	if (expect_false (!ev_is_active (w)))	2800	if (expect_false (!ev_is_active (w)))
2505	return;	2801	return;
2506		2802
		2803	EV_FREQUENT_CHECK;
		2804
2507	{	2805	{
2508	int active = ev_active (w);	2806	int active = ev_active (w);
2509		2807
2510	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	2808	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2511	ev_active (idles [ABSPRI (w)][active - 1]) = active;	2809	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2512		2810
2513	ev_stop (EV_A_ (W)w);	2811	ev_stop (EV_A_ (W)w);
2514	--idleall;	2812	--idleall;
2515	}	2813	}
		2814
		2815	EV_FREQUENT_CHECK;
2516	}	2816	}
2517	#endif	2817	#endif
2518		2818
2519	void	2819	void
2520	ev_prepare_start (EV_P_ ev_prepare *w)	2820	ev_prepare_start (EV_P_ ev_prepare *w)
2521	{	2821	{
2522	if (expect_false (ev_is_active (w)))	2822	if (expect_false (ev_is_active (w)))
2523	return;	2823	return;
		2824
		2825	EV_FREQUENT_CHECK;
2524		2826
2525	ev_start (EV_A_ (W)w, ++preparecnt);	2827	ev_start (EV_A_ (W)w, ++preparecnt);
2526	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	2828	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2527	prepares [preparecnt - 1] = w;	2829	prepares [preparecnt - 1] = w;
		2830
		2831	EV_FREQUENT_CHECK;
2528	}	2832	}
2529		2833
2530	void	2834	void
2531	ev_prepare_stop (EV_P_ ev_prepare *w)	2835	ev_prepare_stop (EV_P_ ev_prepare *w)
2532	{	2836	{
2533	clear_pending (EV_A_ (W)w);	2837	clear_pending (EV_A_ (W)w);
2534	if (expect_false (!ev_is_active (w)))	2838	if (expect_false (!ev_is_active (w)))
2535	return;	2839	return;
2536		2840
		2841	EV_FREQUENT_CHECK;
		2842
2537	{	2843	{
2538	int active = ev_active (w);	2844	int active = ev_active (w);
2539		2845
2540	prepares [active - 1] = prepares [--preparecnt];	2846	prepares [active - 1] = prepares [--preparecnt];
2541	ev_active (prepares [active - 1]) = active;	2847	ev_active (prepares [active - 1]) = active;
2542	}	2848	}
2543		2849
2544	ev_stop (EV_A_ (W)w);	2850	ev_stop (EV_A_ (W)w);
		2851
		2852	EV_FREQUENT_CHECK;
2545	}	2853	}
2546		2854
2547	void	2855	void
2548	ev_check_start (EV_P_ ev_check *w)	2856	ev_check_start (EV_P_ ev_check *w)
2549	{	2857	{
2550	if (expect_false (ev_is_active (w)))	2858	if (expect_false (ev_is_active (w)))
2551	return;	2859	return;
		2860
		2861	EV_FREQUENT_CHECK;
2552		2862
2553	ev_start (EV_A_ (W)w, ++checkcnt);	2863	ev_start (EV_A_ (W)w, ++checkcnt);
2554	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	2864	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2555	checks [checkcnt - 1] = w;	2865	checks [checkcnt - 1] = w;
		2866
		2867	EV_FREQUENT_CHECK;
2556	}	2868	}
2557		2869
2558	void	2870	void
2559	ev_check_stop (EV_P_ ev_check *w)	2871	ev_check_stop (EV_P_ ev_check *w)
2560	{	2872	{
2561	clear_pending (EV_A_ (W)w);	2873	clear_pending (EV_A_ (W)w);
2562	if (expect_false (!ev_is_active (w)))	2874	if (expect_false (!ev_is_active (w)))
2563	return;	2875	return;
2564		2876
		2877	EV_FREQUENT_CHECK;
		2878
2565	{	2879	{
2566	int active = ev_active (w);	2880	int active = ev_active (w);
2567		2881
2568	checks [active - 1] = checks [--checkcnt];	2882	checks [active - 1] = checks [--checkcnt];
2569	ev_active (checks [active - 1]) = active;	2883	ev_active (checks [active - 1]) = active;
2570	}	2884	}
2571		2885
2572	ev_stop (EV_A_ (W)w);	2886	ev_stop (EV_A_ (W)w);
		2887
		2888	EV_FREQUENT_CHECK;
2573	}	2889	}
2574		2890
2575	#if EV_EMBED_ENABLE	2891	#if EV_EMBED_ENABLE
2576	void noinline	2892	void noinline
2577	ev_embed_sweep (EV_P_ ev_embed *w)	2893	ev_embed_sweep (EV_P_ ev_embed *w)
…		…
2604	ev_loop (EV_A_ EVLOOP_NONBLOCK);	2920	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2605	}	2921	}
2606	}	2922	}
2607	}	2923	}
2608		2924
		2925	static void
		2926	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		2927	{
		2928	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		2929
		2930	ev_embed_stop (EV_A_ w);
		2931
		2932	{
		2933	struct ev_loop *loop = w->other;
		2934
		2935	ev_loop_fork (EV_A);
		2936	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2937	}
		2938
		2939	ev_embed_start (EV_A_ w);
		2940	}
		2941
2609	#if 0	2942	#if 0
2610	static void	2943	static void
2611	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	2944	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2612	{	2945	{
2613	ev_idle_stop (EV_A_ idle);	2946	ev_idle_stop (EV_A_ idle);
…		…
2620	if (expect_false (ev_is_active (w)))	2953	if (expect_false (ev_is_active (w)))
2621	return;	2954	return;
2622		2955
2623	{	2956	{
2624	struct ev_loop *loop = w->other;	2957	struct ev_loop *loop = w->other;
2625	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2958	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2626	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	2959	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2627	}	2960	}
		2961
		2962	EV_FREQUENT_CHECK;
2628		2963
2629	ev_set_priority (&w->io, ev_priority (w));	2964	ev_set_priority (&w->io, ev_priority (w));
2630	ev_io_start (EV_A_ &w->io);	2965	ev_io_start (EV_A_ &w->io);
2631		2966
2632	ev_prepare_init (&w->prepare, embed_prepare_cb);	2967	ev_prepare_init (&w->prepare, embed_prepare_cb);
2633	ev_set_priority (&w->prepare, EV_MINPRI);	2968	ev_set_priority (&w->prepare, EV_MINPRI);
2634	ev_prepare_start (EV_A_ &w->prepare);	2969	ev_prepare_start (EV_A_ &w->prepare);
2635		2970
		2971	ev_fork_init (&w->fork, embed_fork_cb);
		2972	ev_fork_start (EV_A_ &w->fork);
		2973
2636	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	2974	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2637		2975
2638	ev_start (EV_A_ (W)w, 1);	2976	ev_start (EV_A_ (W)w, 1);
		2977
		2978	EV_FREQUENT_CHECK;
2639	}	2979	}
2640		2980
2641	void	2981	void
2642	ev_embed_stop (EV_P_ ev_embed *w)	2982	ev_embed_stop (EV_P_ ev_embed *w)
2643	{	2983	{
2644	clear_pending (EV_A_ (W)w);	2984	clear_pending (EV_A_ (W)w);
2645	if (expect_false (!ev_is_active (w)))	2985	if (expect_false (!ev_is_active (w)))
2646	return;	2986	return;
2647		2987
		2988	EV_FREQUENT_CHECK;
		2989
2648	ev_io_stop (EV_A_ &w->io);	2990	ev_io_stop (EV_A_ &w->io);
2649	ev_prepare_stop (EV_A_ &w->prepare);	2991	ev_prepare_stop (EV_A_ &w->prepare);
		2992	ev_fork_stop (EV_A_ &w->fork);
2650		2993
2651	ev_stop (EV_A_ (W)w);	2994	EV_FREQUENT_CHECK;
2652	}	2995	}
2653	#endif	2996	#endif
2654		2997
2655	#if EV_FORK_ENABLE	2998	#if EV_FORK_ENABLE
2656	void	2999	void
2657	ev_fork_start (EV_P_ ev_fork *w)	3000	ev_fork_start (EV_P_ ev_fork *w)
2658	{	3001	{
2659	if (expect_false (ev_is_active (w)))	3002	if (expect_false (ev_is_active (w)))
2660	return;	3003	return;
		3004
		3005	EV_FREQUENT_CHECK;
2661		3006
2662	ev_start (EV_A_ (W)w, ++forkcnt);	3007	ev_start (EV_A_ (W)w, ++forkcnt);
2663	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3008	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2664	forks [forkcnt - 1] = w;	3009	forks [forkcnt - 1] = w;
		3010
		3011	EV_FREQUENT_CHECK;
2665	}	3012	}
2666		3013
2667	void	3014	void
2668	ev_fork_stop (EV_P_ ev_fork *w)	3015	ev_fork_stop (EV_P_ ev_fork *w)
2669	{	3016	{
2670	clear_pending (EV_A_ (W)w);	3017	clear_pending (EV_A_ (W)w);
2671	if (expect_false (!ev_is_active (w)))	3018	if (expect_false (!ev_is_active (w)))
2672	return;	3019	return;
2673		3020
		3021	EV_FREQUENT_CHECK;
		3022
2674	{	3023	{
2675	int active = ev_active (w);	3024	int active = ev_active (w);
2676		3025
2677	forks [active - 1] = forks [--forkcnt];	3026	forks [active - 1] = forks [--forkcnt];
2678	ev_active (forks [active - 1]) = active;	3027	ev_active (forks [active - 1]) = active;
2679	}	3028	}
2680		3029
2681	ev_stop (EV_A_ (W)w);	3030	ev_stop (EV_A_ (W)w);
		3031
		3032	EV_FREQUENT_CHECK;
2682	}	3033	}
2683	#endif	3034	#endif
2684		3035
2685	#if EV_ASYNC_ENABLE	3036	#if EV_ASYNC_ENABLE
2686	void	3037	void
…		…
2688	{	3039	{
2689	if (expect_false (ev_is_active (w)))	3040	if (expect_false (ev_is_active (w)))
2690	return;	3041	return;
2691		3042
2692	evpipe_init (EV_A);	3043	evpipe_init (EV_A);
		3044
		3045	EV_FREQUENT_CHECK;
2693		3046
2694	ev_start (EV_A_ (W)w, ++asynccnt);	3047	ev_start (EV_A_ (W)w, ++asynccnt);
2695	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);	3048	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2696	asyncs [asynccnt - 1] = w;	3049	asyncs [asynccnt - 1] = w;
		3050
		3051	EV_FREQUENT_CHECK;
2697	}	3052	}
2698		3053
2699	void	3054	void
2700	ev_async_stop (EV_P_ ev_async *w)	3055	ev_async_stop (EV_P_ ev_async *w)
2701	{	3056	{
2702	clear_pending (EV_A_ (W)w);	3057	clear_pending (EV_A_ (W)w);
2703	if (expect_false (!ev_is_active (w)))	3058	if (expect_false (!ev_is_active (w)))
2704	return;	3059	return;
2705		3060
		3061	EV_FREQUENT_CHECK;
		3062
2706	{	3063	{
2707	int active = ev_active (w);	3064	int active = ev_active (w);
2708		3065
2709	asyncs [active - 1] = asyncs [--asynccnt];	3066	asyncs [active - 1] = asyncs [--asynccnt];
2710	ev_active (asyncs [active - 1]) = active;	3067	ev_active (asyncs [active - 1]) = active;
2711	}	3068	}
2712		3069
2713	ev_stop (EV_A_ (W)w);	3070	ev_stop (EV_A_ (W)w);
		3071
		3072	EV_FREQUENT_CHECK;
2714	}	3073	}
2715		3074
2716	void	3075	void
2717	ev_async_send (EV_P_ ev_async *w)	3076	ev_async_send (EV_P_ ev_async *w)
2718	{	3077	{
…		…
2735	once_cb (EV_P_ struct ev_once *once, int revents)	3094	once_cb (EV_P_ struct ev_once *once, int revents)
2736	{	3095	{
2737	void (*cb)(int revents, void *arg) = once->cb;	3096	void (*cb)(int revents, void *arg) = once->cb;
2738	void *arg = once->arg;	3097	void *arg = once->arg;
2739		3098
2740	ev_io_stop (EV_A_ &once->io);	3099	ev_io_stop (EV_A_ &once->io);
2741	ev_timer_stop (EV_A_ &once->to);	3100	ev_timer_stop (EV_A_ &once->to);
2742	ev_free (once);	3101	ev_free (once);
2743		3102
2744	cb (revents, arg);	3103	cb (revents, arg);
2745	}	3104	}
2746		3105
2747	static void	3106	static void
2748	once_cb_io (EV_P_ ev_io *w, int revents)	3107	once_cb_io (EV_P_ ev_io *w, int revents)
2749	{	3108	{
2750	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3109	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3110
		3111	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2751	}	3112	}
2752		3113
2753	static void	3114	static void
2754	once_cb_to (EV_P_ ev_timer *w, int revents)	3115	once_cb_to (EV_P_ ev_timer *w, int revents)
2755	{	3116	{
2756	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3117	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3118
		3119	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2757	}	3120	}
2758		3121
2759	void	3122	void
2760	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3123	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2761	{	3124	{

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