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Comparing libev/ev.c (file contents):
Revision 1.242 by root, Fri May 9 14:07:19 2008 UTC vs.
Revision 1.278 by root, Tue Jan 6 19:46:56 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
…		…
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 0
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
		279	#ifndef EV_USE_4HEAP
		280	# define EV_USE_4HEAP !EV_MINIMAL
		281	#endif
		282
		283	#ifndef EV_HEAP_CACHE_AT
		284	# define EV_HEAP_CACHE_AT !EV_MINIMAL
		285	#endif
		286
240	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	287	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
241		288
242	#ifndef CLOCK_MONOTONIC	289	#ifndef CLOCK_MONOTONIC
243	# undef EV_USE_MONOTONIC	290	# undef EV_USE_MONOTONIC
244	# define EV_USE_MONOTONIC 0	291	# define EV_USE_MONOTONIC 0
…		…
259	# include <sys/select.h>	306	# include <sys/select.h>
260	# endif	307	# endif
261	#endif	308	#endif
262		309
263	#if EV_USE_INOTIFY	310	#if EV_USE_INOTIFY
		311	# include <sys/utsname.h>
		312	# include <sys/statfs.h>
264	# 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
265	#endif	319	#endif
266		320
267	#if EV_SELECT_IS_WINSOCKET	321	#if EV_SELECT_IS_WINSOCKET
268	# 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
269	#endif	332	#endif
270		333
271	#if EV_USE_EVENTFD	334	#if EV_USE_EVENTFD
272	/* 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 */
273	# include <stdint.h>	336	# include <stdint.h>
…		…
279	}	342	}
280	# endif	343	# endif
281	#endif	344	#endif
282		345
283	/**/	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
284		353
285	/*	354	/*
286	* This is used to avoid floating point rounding problems.	355	* This is used to avoid floating point rounding problems.
287	* It is added to ev_rt_now when scheduling periodics	356	* It is added to ev_rt_now when scheduling periodics
288	* to ensure progress, time-wise, even when rounding	357	* to ensure progress, time-wise, even when rounding
…		…
349	{	418	{
350	syserr_cb = cb;	419	syserr_cb = cb;
351	}	420	}
352		421
353	static void noinline	422	static void noinline
354	syserr (const char *msg)	423	ev_syserr (const char *msg)
355	{	424	{
356	if (!msg)	425	if (!msg)
357	msg = "(libev) system error";	426	msg = "(libev) system error";
358		427
359	if (syserr_cb)	428	if (syserr_cb)
…		…
410	typedef struct	479	typedef struct
411	{	480	{
412	WL head;	481	WL head;
413	unsigned char events;	482	unsigned char events;
414	unsigned char reify;	483	unsigned char reify;
		484	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
		485	unsigned char unused;
		486	#if EV_USE_EPOLL
		487	unsigned int egen; /* generation counter to counter epoll bugs */
		488	#endif
415	#if EV_SELECT_IS_WINSOCKET	489	#if EV_SELECT_IS_WINSOCKET
416	SOCKET handle;	490	SOCKET handle;
417	#endif	491	#endif
418	} ANFD;	492	} ANFD;
419		493
…		…
430	WL head;	504	WL head;
431	} ANFS;	505	} ANFS;
432	#endif	506	#endif
433		507
434	/* Heap Entry */	508	/* Heap Entry */
435	#define EV_HEAP_CACHE_AT 0
436	#if EV_HEAP_CACHE_AT	509	#if EV_HEAP_CACHE_AT
437	typedef struct {	510	typedef struct {
		511	ev_tstamp at;
438	WT w;	512	WT w;
439	ev_tstamp at;
440	} ANHE;	513	} ANHE;
441		514
442	#define ANHE_w(he) (he).w /* access watcher, read-write */	515	#define ANHE_w(he) (he).w /* access watcher, read-write */
443	#define ANHE_at(he) (he).at /* access cached at, read-only */	516	#define ANHE_at(he) (he).at /* access cached at, read-only */
444	#define ANHE_at_set(he) (he).at = (he).w->at /* update at from watcher */	517	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
445	#else	518	#else
446	typedef WT ANHE;	519	typedef WT ANHE;
447		520
448	#define ANHE_w(he) (he)	521	#define ANHE_w(he) (he)
449	#define ANHE_at(he) (he)->at	522	#define ANHE_at(he) (he)->at
450	#define ANHE_at_set(he)	523	#define ANHE_at_cache(he)
451	#endif	524	#endif
452		525
453	#if EV_MULTIPLICITY	526	#if EV_MULTIPLICITY
454		527
455	struct ev_loop	528	struct ev_loop
…		…
533	struct timeval tv;	606	struct timeval tv;
534		607
535	tv.tv_sec = (time_t)delay;	608	tv.tv_sec = (time_t)delay;
536	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	609	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
537		610
		611	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		612	/* somehting nto guaranteed by newer posix versions, but guaranteed */
		613	/* by older ones */
538	select (0, 0, 0, 0, &tv);	614	select (0, 0, 0, 0, &tv);
539	#endif	615	#endif
540	}	616	}
541	}	617	}
542		618
…		…
569	array_realloc (int elem, void *base, int *cur, int cnt)	645	array_realloc (int elem, void *base, int *cur, int cnt)
570	{	646	{
571	*cur = array_nextsize (elem, *cur, cnt);	647	*cur = array_nextsize (elem, *cur, cnt);
572	return ev_realloc (base, elem * *cur);	648	return ev_realloc (base, elem * *cur);
573	}	649	}
		650
		651	#define array_init_zero(base,count) \
		652	memset ((void *)(base), 0, sizeof (*(base)) * (count))
574		653
575	#define array_needsize(type,base,cur,cnt,init) \	654	#define array_needsize(type,base,cur,cnt,init) \
576	if (expect_false ((cnt) > (cur))) \	655	if (expect_false ((cnt) > (cur))) \
577	{ \	656	{ \
578	int ocur_ = (cur); \	657	int ocur_ = (cur); \
…		…
622	ev_feed_event (EV_A_ events [i], type);	701	ev_feed_event (EV_A_ events [i], type);
623	}	702	}
624		703
625	/*****************************************************************************/	704	/*****************************************************************************/
626		705
627	void inline_size
628	anfds_init (ANFD *base, int count)
629	{
630	while (count--)
631	{
632	base->head = 0;
633	base->events = EV_NONE;
634	base->reify = 0;
635
636	++base;
637	}
638	}
639
640	void inline_speed	706	void inline_speed
641	fd_event (EV_P_ int fd, int revents)	707	fd_event (EV_P_ int fd, int revents)
642	{	708	{
643	ANFD *anfd = anfds + fd;	709	ANFD *anfd = anfds + fd;
644	ev_io *w;	710	ev_io *w;
…		…
676	events |= (unsigned char)w->events;	742	events |= (unsigned char)w->events;
677		743
678	#if EV_SELECT_IS_WINSOCKET	744	#if EV_SELECT_IS_WINSOCKET
679	if (events)	745	if (events)
680	{	746	{
681	unsigned long argp;	747	unsigned long arg;
682	#ifdef EV_FD_TO_WIN32_HANDLE	748	#ifdef EV_FD_TO_WIN32_HANDLE
683	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	749	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
684	#else	750	#else
685	anfd->handle = _get_osfhandle (fd);	751	anfd->handle = _get_osfhandle (fd);
686	#endif	752	#endif
687	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	753	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
688	}	754	}
689	#endif	755	#endif
690		756
691	{	757	{
692	unsigned char o_events = anfd->events;	758	unsigned char o_events = anfd->events;
…		…
745	{	811	{
746	int fd;	812	int fd;
747		813
748	for (fd = 0; fd < anfdmax; ++fd)	814	for (fd = 0; fd < anfdmax; ++fd)
749	if (anfds [fd].events)	815	if (anfds [fd].events)
750	if (!fd_valid (fd) == -1 && errno == EBADF)	816	if (!fd_valid (fd) && errno == EBADF)
751	fd_kill (EV_A_ fd);	817	fd_kill (EV_A_ fd);
752	}	818	}
753		819
754	/* called on ENOMEM in select/poll to kill some fds and retry */	820	/* called on ENOMEM in select/poll to kill some fds and retry */
755	static void noinline	821	static void noinline
…		…
773		839
774	for (fd = 0; fd < anfdmax; ++fd)	840	for (fd = 0; fd < anfdmax; ++fd)
775	if (anfds [fd].events)	841	if (anfds [fd].events)
776	{	842	{
777	anfds [fd].events = 0;	843	anfds [fd].events = 0;
		844	anfds [fd].emask = 0;
778	fd_change (EV_A_ fd, EV_IOFDSET | 1);	845	fd_change (EV_A_ fd, EV_IOFDSET | 1);
779	}	846	}
780	}	847	}
781		848
782	/*****************************************************************************/	849	/*****************************************************************************/
…		…
791	* at the moment we allow libev the luxury of two heaps,	858	* at the moment we allow libev the luxury of two heaps,
792	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap	859	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
793	* which is more cache-efficient.	860	* which is more cache-efficient.
794	* the difference is about 5% with 50000+ watchers.	861	* the difference is about 5% with 50000+ watchers.
795	*/	862	*/
796	#define EV_USE_4HEAP !EV_MINIMAL
797	#if EV_USE_4HEAP	863	#if EV_USE_4HEAP
798		864
799	#define DHEAP 4	865	#define DHEAP 4
800	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	866	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
801		867	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
802	/* towards the root */	868	#define UPHEAP_DONE(p,k) ((p) == (k))
803	void inline_speed
804	upheap (ANHE *heap, int k)
805	{
806	ANHE he = heap [k];
807
808	for (;;)
809	{
810	int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
811
812	if (p == k || ANHE_at (heap [p]) <= ANHE_at (he))
813	break;
814
815	heap [k] = heap [p];
816	ev_active (ANHE_w (heap [k])) = k;
817	k = p;
818	}
819
820	ev_active (ANHE_w (he)) = k;
821	heap [k] = he;
822	}
823		869
824	/* away from the root */	870	/* away from the root */
825	void inline_speed	871	void inline_speed
826	downheap (ANHE *heap, int N, int k)	872	downheap (ANHE *heap, int N, int k)
827	{	873	{
…		…
830		876
831	for (;;)	877	for (;;)
832	{	878	{
833	ev_tstamp minat;	879	ev_tstamp minat;
834	ANHE *minpos;	880	ANHE *minpos;
835	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0;	881	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
836		882
837	// find minimum child	883	/* find minimum child */
838	if (expect_true (pos + DHEAP - 1 < E))	884	if (expect_true (pos + DHEAP - 1 < E))
839	{	885	{
840	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));	886	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
841	if (ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));	887	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
842	if (ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));	888	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
843	if (ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));	889	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
844	}	890	}
845	else if (pos < E)	891	else if (pos < E)
846	{	892	{
847	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));	893	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
848	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));	894	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
…		…
853	break;	899	break;
854		900
855	if (ANHE_at (he) <= minat)	901	if (ANHE_at (he) <= minat)
856	break;	902	break;
857		903
		904	heap [k] = *minpos;
858	ev_active (ANHE_w (*minpos)) = k;	905	ev_active (ANHE_w (*minpos)) = k;
859	heap [k] = *minpos;
860		906
861	k = minpos - heap;	907	k = minpos - heap;
862	}	908	}
863		909
		910	heap [k] = he;
864	ev_active (ANHE_w (he)) = k;	911	ev_active (ANHE_w (he)) = k;
865	heap [k] = he;
866	}	912	}
867		913
868	#else // 4HEAP	914	#else /* 4HEAP */
869		915
870	#define HEAP0 1	916	#define HEAP0 1
871		917	#define HPARENT(k) ((k) >> 1)
872	/* towards the root */	918	#define UPHEAP_DONE(p,k) (!(p))
873	void inline_speed
874	upheap (ANHE *heap, int k)
875	{
876	ANHE he = heap [k];
877
878	for (;;)
879	{
880	int p = k >> 1;
881
882	/* maybe we could use a dummy element at heap [0]? */
883	if (!p || ANHE_at (heap [p]) <= ANHE_at (he))
884	break;
885
886	heap [k] = heap [p];
887	ev_active (ANHE_w (heap [k])) = k;
888	k = p;
889	}
890
891	heap [k] = w;
892	ev_active (ANHE_w (heap [k])) = k;
893	}
894		919
895	/* away from the root */	920	/* away from the root */
896	void inline_speed	921	void inline_speed
897	downheap (ANHE *heap, int N, int k)	922	downheap (ANHE *heap, int N, int k)
898	{	923	{
…		…
900		925
901	for (;;)	926	for (;;)
902	{	927	{
903	int c = k << 1;	928	int c = k << 1;
904		929
905	if (c > N)	930	if (c > N + HEAP0 - 1)
906	break;	931	break;
907		932
908	c += c + 1 < N && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])	933	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
909	? 1 : 0;	934	? 1 : 0;
910		935
911	if (w->at <= ANHE_at (heap [c]))	936	if (ANHE_at (he) <= ANHE_at (heap [c]))
912	break;	937	break;
913		938
914	heap [k] = heap [c];	939	heap [k] = heap [c];
915	ev_active (ANHE_w (heap [k])) = k;	940	ev_active (ANHE_w (heap [k])) = k;
916		941
…		…
920	heap [k] = he;	945	heap [k] = he;
921	ev_active (ANHE_w (he)) = k;	946	ev_active (ANHE_w (he)) = k;
922	}	947	}
923	#endif	948	#endif
924		949
		950	/* towards the root */
		951	void inline_speed
		952	upheap (ANHE *heap, int k)
		953	{
		954	ANHE he = heap [k];
		955
		956	for (;;)
		957	{
		958	int p = HPARENT (k);
		959
		960	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		961	break;
		962
		963	heap [k] = heap [p];
		964	ev_active (ANHE_w (heap [k])) = k;
		965	k = p;
		966	}
		967
		968	heap [k] = he;
		969	ev_active (ANHE_w (he)) = k;
		970	}
		971
925	void inline_size	972	void inline_size
926	adjustheap (ANHE *heap, int N, int k)	973	adjustheap (ANHE *heap, int N, int k)
927	{	974	{
		975	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
928	upheap (heap, k);	976	upheap (heap, k);
		977	else
929	downheap (heap, N, k);	978	downheap (heap, N, k);
		979	}
		980
		981	/* rebuild the heap: this function is used only once and executed rarely */
		982	void inline_size
		983	reheap (ANHE *heap, int N)
		984	{
		985	int i;
		986
		987	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		988	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		989	for (i = 0; i < N; ++i)
		990	upheap (heap, i + HEAP0);
930	}	991	}
931		992
932	/*****************************************************************************/	993	/*****************************************************************************/
933		994
934	typedef struct	995	typedef struct
…		…
940	static ANSIG *signals;	1001	static ANSIG *signals;
941	static int signalmax;	1002	static int signalmax;
942		1003
943	static EV_ATOMIC_T gotsig;	1004	static EV_ATOMIC_T gotsig;
944		1005
945	void inline_size
946	signals_init (ANSIG *base, int count)
947	{
948	while (count--)
949	{
950	base->head = 0;
951	base->gotsig = 0;
952
953	++base;
954	}
955	}
956
957	/*****************************************************************************/	1006	/*****************************************************************************/
958		1007
959	void inline_speed	1008	void inline_speed
960	fd_intern (int fd)	1009	fd_intern (int fd)
961	{	1010	{
962	#ifdef _WIN32	1011	#ifdef _WIN32
963	int arg = 1;	1012	unsigned long arg = 1;
964	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1013	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
965	#else	1014	#else
966	fcntl (fd, F_SETFD, FD_CLOEXEC);	1015	fcntl (fd, F_SETFD, FD_CLOEXEC);
967	fcntl (fd, F_SETFL, O_NONBLOCK);	1016	fcntl (fd, F_SETFL, O_NONBLOCK);
968	#endif	1017	#endif
…		…
982	}	1031	}
983	else	1032	else
984	#endif	1033	#endif
985	{	1034	{
986	while (pipe (evpipe))	1035	while (pipe (evpipe))
987	syserr ("(libev) error creating signal/async pipe");	1036	ev_syserr ("(libev) error creating signal/async pipe");
988		1037
989	fd_intern (evpipe [0]);	1038	fd_intern (evpipe [0]);
990	fd_intern (evpipe [1]);	1039	fd_intern (evpipe [1]);
991	ev_io_set (&pipeev, evpipe [0], EV_READ);	1040	ev_io_set (&pipeev, evpipe [0], EV_READ);
992	}	1041	}
…		…
1082	ev_feed_signal_event (EV_P_ int signum)	1131	ev_feed_signal_event (EV_P_ int signum)
1083	{	1132	{
1084	WL w;	1133	WL w;
1085		1134
1086	#if EV_MULTIPLICITY	1135	#if EV_MULTIPLICITY
1087	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1136	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1088	#endif	1137	#endif
1089		1138
1090	--signum;	1139	--signum;
1091		1140
1092	if (signum < 0 || signum >= signalmax)	1141	if (signum < 0 || signum >= signalmax)
…		…
1221	/* kqueue is borked on everything but netbsd apparently */	1270	/* kqueue is borked on everything but netbsd apparently */
1222	/* it usually doesn't work correctly on anything but sockets and pipes */	1271	/* it usually doesn't work correctly on anything but sockets and pipes */
1223	flags &= ~EVBACKEND_KQUEUE;	1272	flags &= ~EVBACKEND_KQUEUE;
1224	#endif	1273	#endif
1225	#ifdef __APPLE__	1274	#ifdef __APPLE__
1226	// flags &= ~EVBACKEND_KQUEUE; for documentation	1275	/* only select works correctly on that "unix-certified" platform */
1227	flags &= ~EVBACKEND_POLL;	1276	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1277	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1228	#endif	1278	#endif
1229		1279
1230	return flags;	1280	return flags;
1231	}	1281	}
1232		1282
…		…
1452		1502
1453	postfork = 0;	1503	postfork = 0;
1454	}	1504	}
1455		1505
1456	#if EV_MULTIPLICITY	1506	#if EV_MULTIPLICITY
		1507
1457	struct ev_loop *	1508	struct ev_loop *
1458	ev_loop_new (unsigned int flags)	1509	ev_loop_new (unsigned int flags)
1459	{	1510	{
1460	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1511	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1461		1512
…		…
1479	void	1530	void
1480	ev_loop_fork (EV_P)	1531	ev_loop_fork (EV_P)
1481	{	1532	{
1482	postfork = 1; /* must be in line with ev_default_fork */	1533	postfork = 1; /* must be in line with ev_default_fork */
1483	}	1534	}
		1535
		1536	#if EV_VERIFY
		1537	static void noinline
		1538	verify_watcher (EV_P_ W w)
		1539	{
		1540	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1541
		1542	if (w->pending)
		1543	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1544	}
		1545
		1546	static void noinline
		1547	verify_heap (EV_P_ ANHE *heap, int N)
		1548	{
		1549	int i;
		1550
		1551	for (i = HEAP0; i < N + HEAP0; ++i)
		1552	{
		1553	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1554	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1555	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1556
		1557	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1558	}
		1559	}
		1560
		1561	static void noinline
		1562	array_verify (EV_P_ W *ws, int cnt)
		1563	{
		1564	while (cnt--)
		1565	{
		1566	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1567	verify_watcher (EV_A_ ws [cnt]);
		1568	}
		1569	}
		1570	#endif
		1571
		1572	void
		1573	ev_loop_verify (EV_P)
		1574	{
		1575	#if EV_VERIFY
		1576	int i;
		1577	WL w;
		1578
		1579	assert (activecnt >= -1);
		1580
		1581	assert (fdchangemax >= fdchangecnt);
		1582	for (i = 0; i < fdchangecnt; ++i)
		1583	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1584
		1585	assert (anfdmax >= 0);
		1586	for (i = 0; i < anfdmax; ++i)
		1587	for (w = anfds [i].head; w; w = w->next)
		1588	{
		1589	verify_watcher (EV_A_ (W)w);
		1590	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1591	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1592	}
		1593
		1594	assert (timermax >= timercnt);
		1595	verify_heap (EV_A_ timers, timercnt);
		1596
		1597	#if EV_PERIODIC_ENABLE
		1598	assert (periodicmax >= periodiccnt);
		1599	verify_heap (EV_A_ periodics, periodiccnt);
		1600	#endif
		1601
		1602	for (i = NUMPRI; i--; )
		1603	{
		1604	assert (pendingmax [i] >= pendingcnt [i]);
		1605	#if EV_IDLE_ENABLE
		1606	assert (idleall >= 0);
		1607	assert (idlemax [i] >= idlecnt [i]);
		1608	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		1609	#endif
		1610	}
		1611
		1612	#if EV_FORK_ENABLE
		1613	assert (forkmax >= forkcnt);
		1614	array_verify (EV_A_ (W *)forks, forkcnt);
		1615	#endif
		1616
		1617	#if EV_ASYNC_ENABLE
		1618	assert (asyncmax >= asynccnt);
		1619	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1620	#endif
		1621
		1622	assert (preparemax >= preparecnt);
		1623	array_verify (EV_A_ (W *)prepares, preparecnt);
		1624
		1625	assert (checkmax >= checkcnt);
		1626	array_verify (EV_A_ (W *)checks, checkcnt);
		1627
		1628	# if 0
		1629	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1630	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1484	#endif	1631	# endif
		1632	#endif
		1633	}
		1634
		1635	#endif /* multiplicity */
1485		1636
1486	#if EV_MULTIPLICITY	1637	#if EV_MULTIPLICITY
1487	struct ev_loop *	1638	struct ev_loop *
1488	ev_default_loop_init (unsigned int flags)	1639	ev_default_loop_init (unsigned int flags)
1489	#else	1640	#else
…		…
1522	{	1673	{
1523	#if EV_MULTIPLICITY	1674	#if EV_MULTIPLICITY
1524	struct ev_loop *loop = ev_default_loop_ptr;	1675	struct ev_loop *loop = ev_default_loop_ptr;
1525	#endif	1676	#endif
1526		1677
		1678	ev_default_loop_ptr = 0;
		1679
1527	#ifndef _WIN32	1680	#ifndef _WIN32
1528	ev_ref (EV_A); /* child watcher */	1681	ev_ref (EV_A); /* child watcher */
1529	ev_signal_stop (EV_A_ &childev);	1682	ev_signal_stop (EV_A_ &childev);
1530	#endif	1683	#endif
1531		1684
…		…
1537	{	1690	{
1538	#if EV_MULTIPLICITY	1691	#if EV_MULTIPLICITY
1539	struct ev_loop *loop = ev_default_loop_ptr;	1692	struct ev_loop *loop = ev_default_loop_ptr;
1540	#endif	1693	#endif
1541		1694
1542	if (backend)
1543	postfork = 1; /* must be in line with ev_loop_fork */	1695	postfork = 1; /* must be in line with ev_loop_fork */
1544	}	1696	}
1545		1697
1546	/*****************************************************************************/	1698	/*****************************************************************************/
1547		1699
1548	void	1700	void
…		…
1561	{	1713	{
1562	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1714	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1563		1715
1564	if (expect_true (p->w))	1716	if (expect_true (p->w))
1565	{	1717	{
1566	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1718	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1567		1719
1568	p->w->pending = 0;	1720	p->w->pending = 0;
1569	EV_CB_INVOKE (p->w, p->events);	1721	EV_CB_INVOKE (p->w, p->events);
		1722	EV_FREQUENT_CHECK;
1570	}	1723	}
1571	}	1724	}
1572	}	1725	}
1573		1726
1574	#if EV_IDLE_ENABLE	1727	#if EV_IDLE_ENABLE
…		…
1595	#endif	1748	#endif
1596		1749
1597	void inline_size	1750	void inline_size
1598	timers_reify (EV_P)	1751	timers_reify (EV_P)
1599	{	1752	{
		1753	EV_FREQUENT_CHECK;
		1754
1600	while (timercnt && ANHE_at (timers [HEAP0]) <= mn_now)	1755	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1601	{	1756	{
1602	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	1757	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
1603		1758
1604	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/	1759	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
1605		1760
1606	/* first reschedule or stop timer */	1761	/* first reschedule or stop timer */
1607	if (w->repeat)	1762	if (w->repeat)
1608	{	1763	{
1609	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1610
1611	ev_at (w) += w->repeat;	1764	ev_at (w) += w->repeat;
1612	if (ev_at (w) < mn_now)	1765	if (ev_at (w) < mn_now)
1613	ev_at (w) = mn_now;	1766	ev_at (w) = mn_now;
1614		1767
		1768	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1769
1615	ANHE_at_set (timers [HEAP0]);	1770	ANHE_at_cache (timers [HEAP0]);
1616	downheap (timers, timercnt, HEAP0);	1771	downheap (timers, timercnt, HEAP0);
1617	}	1772	}
1618	else	1773	else
1619	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1774	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1620		1775
		1776	EV_FREQUENT_CHECK;
1621	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1777	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1622	}	1778	}
1623	}	1779	}
1624		1780
1625	#if EV_PERIODIC_ENABLE	1781	#if EV_PERIODIC_ENABLE
1626	void inline_size	1782	void inline_size
1627	periodics_reify (EV_P)	1783	periodics_reify (EV_P)
1628	{	1784	{
		1785	EV_FREQUENT_CHECK;
		1786
1629	while (periodiccnt && ANHE_at (periodics [HEAP0]) <= ev_rt_now)	1787	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1630	{	1788	{
1631	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	1789	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1632		1790
1633	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	1791	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
1634		1792
1635	/* first reschedule or stop timer */	1793	/* first reschedule or stop timer */
1636	if (w->reschedule_cb)	1794	if (w->reschedule_cb)
1637	{	1795	{
1638	ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);	1796	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1797
1639	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));	1798	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		1799
1640	ANHE_at_set (periodics [HEAP0]);	1800	ANHE_at_cache (periodics [HEAP0]);
1641	downheap (periodics, periodiccnt, HEAP0);	1801	downheap (periodics, periodiccnt, HEAP0);
1642	}	1802	}
1643	else if (w->interval)	1803	else if (w->interval)
1644	{	1804	{
1645	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	1805	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1806	/* if next trigger time is not sufficiently in the future, put it there */
		1807	/* this might happen because of floating point inexactness */
1646	if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;	1808	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1647	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));	1809	{
		1810	ev_at (w) += w->interval;
		1811
		1812	/* if interval is unreasonably low we might still have a time in the past */
		1813	/* so correct this. this will make the periodic very inexact, but the user */
		1814	/* has effectively asked to get triggered more often than possible */
		1815	if (ev_at (w) < ev_rt_now)
		1816	ev_at (w) = ev_rt_now;
		1817	}
		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	1822	else
1652	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1823	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1653		1824
		1825	EV_FREQUENT_CHECK;
1654	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1826	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1655	}	1827	}
1656	}	1828	}
1657		1829
1658	static void noinline	1830	static void noinline
…		…
1668	if (w->reschedule_cb)	1840	if (w->reschedule_cb)
1669	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1841	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1670	else if (w->interval)	1842	else if (w->interval)
1671	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	1843	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1672		1844
1673	ANHE_at_set (periodics [i]);	1845	ANHE_at_cache (periodics [i]);
1674	}	1846	}
1675		1847
1676	/* now rebuild the heap, this for the 2-heap, inefficient for the 4-heap, but correct */
1677	for (i = periodiccnt >> 1; --i; )
1678	downheap (periodics, periodiccnt, i + HEAP0);	1848	reheap (periodics, periodiccnt);
1679	}	1849	}
1680	#endif	1850	#endif
1681		1851
1682	void inline_speed	1852	void inline_speed
1683	time_update (EV_P_ ev_tstamp max_block)	1853	time_update (EV_P_ ev_tstamp max_block)
…		…
1741	/* adjust timers. this is easy, as the offset is the same for all of them */	1911	/* adjust timers. this is easy, as the offset is the same for all of them */
1742	for (i = 0; i < timercnt; ++i)	1912	for (i = 0; i < timercnt; ++i)
1743	{	1913	{
1744	ANHE *he = timers + i + HEAP0;	1914	ANHE *he = timers + i + HEAP0;
1745	ANHE_w (*he)->at += ev_rt_now - mn_now;	1915	ANHE_w (*he)->at += ev_rt_now - mn_now;
1746	ANHE_at_set (*he);	1916	ANHE_at_cache (*he);
1747	}	1917	}
1748	}	1918	}
1749		1919
1750	mn_now = ev_rt_now;	1920	mn_now = ev_rt_now;
1751	}	1921	}
…		…
1761	ev_unref (EV_P)	1931	ev_unref (EV_P)
1762	{	1932	{
1763	--activecnt;	1933	--activecnt;
1764	}	1934	}
1765		1935
		1936	void
		1937	ev_now_update (EV_P)
		1938	{
		1939	time_update (EV_A_ 1e100);
		1940	}
		1941
1766	static int loop_done;	1942	static int loop_done;
1767		1943
1768	void	1944	void
1769	ev_loop (EV_P_ int flags)	1945	ev_loop (EV_P_ int flags)
1770	{	1946	{
…		…
1772		1948
1773	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	1949	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1774		1950
1775	do	1951	do
1776	{	1952	{
		1953	#if EV_VERIFY >= 2
		1954	ev_loop_verify (EV_A);
		1955	#endif
		1956
1777	#ifndef _WIN32	1957	#ifndef _WIN32
1778	if (expect_false (curpid)) /* penalise the forking check even more */	1958	if (expect_false (curpid)) /* penalise the forking check even more */
1779	if (expect_false (getpid () != curpid))	1959	if (expect_false (getpid () != curpid))
1780	{	1960	{
1781	curpid = getpid ();	1961	curpid = getpid ();
…		…
1974	int fd = w->fd;	2154	int fd = w->fd;
1975		2155
1976	if (expect_false (ev_is_active (w)))	2156	if (expect_false (ev_is_active (w)))
1977	return;	2157	return;
1978		2158
1979	assert (("ev_io_start called with negative fd", fd >= 0));	2159	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2160	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE))));
		2161
		2162	EV_FREQUENT_CHECK;
1980		2163
1981	ev_start (EV_A_ (W)w, 1);	2164	ev_start (EV_A_ (W)w, 1);
1982	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2165	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1983	wlist_add (&anfds[fd].head, (WL)w);	2166	wlist_add (&anfds[fd].head, (WL)w);
1984		2167
1985	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2168	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1986	w->events &= ~EV_IOFDSET;	2169	w->events &= ~EV_IOFDSET;
		2170
		2171	EV_FREQUENT_CHECK;
1987	}	2172	}
1988		2173
1989	void noinline	2174	void noinline
1990	ev_io_stop (EV_P_ ev_io *w)	2175	ev_io_stop (EV_P_ ev_io *w)
1991	{	2176	{
1992	clear_pending (EV_A_ (W)w);	2177	clear_pending (EV_A_ (W)w);
1993	if (expect_false (!ev_is_active (w)))	2178	if (expect_false (!ev_is_active (w)))
1994	return;	2179	return;
1995		2180
1996	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2181	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		2182
		2183	EV_FREQUENT_CHECK;
1997		2184
1998	wlist_del (&anfds[w->fd].head, (WL)w);	2185	wlist_del (&anfds[w->fd].head, (WL)w);
1999	ev_stop (EV_A_ (W)w);	2186	ev_stop (EV_A_ (W)w);
2000		2187
2001	fd_change (EV_A_ w->fd, 1);	2188	fd_change (EV_A_ w->fd, 1);
		2189
		2190	EV_FREQUENT_CHECK;
2002	}	2191	}
2003		2192
2004	void noinline	2193	void noinline
2005	ev_timer_start (EV_P_ ev_timer *w)	2194	ev_timer_start (EV_P_ ev_timer *w)
2006	{	2195	{
2007	if (expect_false (ev_is_active (w)))	2196	if (expect_false (ev_is_active (w)))
2008	return;	2197	return;
2009		2198
2010	ev_at (w) += mn_now;	2199	ev_at (w) += mn_now;
2011		2200
2012	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2201	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2013		2202
		2203	EV_FREQUENT_CHECK;
		2204
		2205	++timercnt;
2014	ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1);	2206	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2015	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);	2207	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
2016	ANHE_w (timers [ev_active (w)]) = (WT)w;	2208	ANHE_w (timers [ev_active (w)]) = (WT)w;
2017	ANHE_at_set (timers [ev_active (w)]);	2209	ANHE_at_cache (timers [ev_active (w)]);
2018	upheap (timers, ev_active (w));	2210	upheap (timers, ev_active (w));
2019		2211
		2212	EV_FREQUENT_CHECK;
		2213
2020	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2214	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2021	}	2215	}
2022		2216
2023	void noinline	2217	void noinline
2024	ev_timer_stop (EV_P_ ev_timer *w)	2218	ev_timer_stop (EV_P_ ev_timer *w)
2025	{	2219	{
2026	clear_pending (EV_A_ (W)w);	2220	clear_pending (EV_A_ (W)w);
2027	if (expect_false (!ev_is_active (w)))	2221	if (expect_false (!ev_is_active (w)))
2028	return;	2222	return;
2029		2223
		2224	EV_FREQUENT_CHECK;
		2225
2030	{	2226	{
2031	int active = ev_active (w);	2227	int active = ev_active (w);
2032		2228
2033	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2229	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2034		2230
		2231	--timercnt;
		2232
2035	if (expect_true (active < timercnt + HEAP0 - 1))	2233	if (expect_true (active < timercnt + HEAP0))
2036	{	2234	{
2037	timers [active] = timers [timercnt + HEAP0 - 1];	2235	timers [active] = timers [timercnt + HEAP0];
2038	adjustheap (timers, timercnt, active);	2236	adjustheap (timers, timercnt, active);
2039	}	2237	}
2040
2041	--timercnt;
2042	}	2238	}
		2239
		2240	EV_FREQUENT_CHECK;
2043		2241
2044	ev_at (w) -= mn_now;	2242	ev_at (w) -= mn_now;
2045		2243
2046	ev_stop (EV_A_ (W)w);	2244	ev_stop (EV_A_ (W)w);
2047	}	2245	}
2048		2246
2049	void noinline	2247	void noinline
2050	ev_timer_again (EV_P_ ev_timer *w)	2248	ev_timer_again (EV_P_ ev_timer *w)
2051	{	2249	{
		2250	EV_FREQUENT_CHECK;
		2251
2052	if (ev_is_active (w))	2252	if (ev_is_active (w))
2053	{	2253	{
2054	if (w->repeat)	2254	if (w->repeat)
2055	{	2255	{
2056	ev_at (w) = mn_now + w->repeat;	2256	ev_at (w) = mn_now + w->repeat;
2057	ANHE_at_set (timers [ev_active (w)]);	2257	ANHE_at_cache (timers [ev_active (w)]);
2058	adjustheap (timers, timercnt, ev_active (w));	2258	adjustheap (timers, timercnt, ev_active (w));
2059	}	2259	}
2060	else	2260	else
2061	ev_timer_stop (EV_A_ w);	2261	ev_timer_stop (EV_A_ w);
2062	}	2262	}
2063	else if (w->repeat)	2263	else if (w->repeat)
2064	{	2264	{
2065	ev_at (w) = w->repeat;	2265	ev_at (w) = w->repeat;
2066	ev_timer_start (EV_A_ w);	2266	ev_timer_start (EV_A_ w);
2067	}	2267	}
		2268
		2269	EV_FREQUENT_CHECK;
2068	}	2270	}
2069		2271
2070	#if EV_PERIODIC_ENABLE	2272	#if EV_PERIODIC_ENABLE
2071	void noinline	2273	void noinline
2072	ev_periodic_start (EV_P_ ev_periodic *w)	2274	ev_periodic_start (EV_P_ ev_periodic *w)
…		…
2076		2278
2077	if (w->reschedule_cb)	2279	if (w->reschedule_cb)
2078	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2280	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2079	else if (w->interval)	2281	else if (w->interval)
2080	{	2282	{
2081	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2283	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2082	/* this formula differs from the one in periodic_reify because we do not always round up */	2284	/* this formula differs from the one in periodic_reify because we do not always round up */
2083	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2285	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2084	}	2286	}
2085	else	2287	else
2086	ev_at (w) = w->offset;	2288	ev_at (w) = w->offset;
2087		2289
		2290	EV_FREQUENT_CHECK;
		2291
		2292	++periodiccnt;
2088	ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1);	2293	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2089	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);	2294	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2090	ANHE_w (periodics [ev_active (w)]) = (WT)w;	2295	ANHE_w (periodics [ev_active (w)]) = (WT)w;
		2296	ANHE_at_cache (periodics [ev_active (w)]);
2091	upheap (periodics, ev_active (w));	2297	upheap (periodics, ev_active (w));
2092		2298
		2299	EV_FREQUENT_CHECK;
		2300
2093	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2301	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2094	}	2302	}
2095		2303
2096	void noinline	2304	void noinline
2097	ev_periodic_stop (EV_P_ ev_periodic *w)	2305	ev_periodic_stop (EV_P_ ev_periodic *w)
2098	{	2306	{
2099	clear_pending (EV_A_ (W)w);	2307	clear_pending (EV_A_ (W)w);
2100	if (expect_false (!ev_is_active (w)))	2308	if (expect_false (!ev_is_active (w)))
2101	return;	2309	return;
2102		2310
		2311	EV_FREQUENT_CHECK;
		2312
2103	{	2313	{
2104	int active = ev_active (w);	2314	int active = ev_active (w);
2105		2315
2106	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2316	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2107		2317
		2318	--periodiccnt;
		2319
2108	if (expect_true (active < periodiccnt + HEAP0 - 1))	2320	if (expect_true (active < periodiccnt + HEAP0))
2109	{	2321	{
2110	periodics [active] = periodics [periodiccnt + HEAP0 - 1];	2322	periodics [active] = periodics [periodiccnt + HEAP0];
2111	adjustheap (periodics, periodiccnt, active);	2323	adjustheap (periodics, periodiccnt, active);
2112	}	2324	}
2113
2114	--periodiccnt;
2115	}	2325	}
		2326
		2327	EV_FREQUENT_CHECK;
2116		2328
2117	ev_stop (EV_A_ (W)w);	2329	ev_stop (EV_A_ (W)w);
2118	}	2330	}
2119		2331
2120	void noinline	2332	void noinline
…		…
2132		2344
2133	void noinline	2345	void noinline
2134	ev_signal_start (EV_P_ ev_signal *w)	2346	ev_signal_start (EV_P_ ev_signal *w)
2135	{	2347	{
2136	#if EV_MULTIPLICITY	2348	#if EV_MULTIPLICITY
2137	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2349	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2138	#endif	2350	#endif
2139	if (expect_false (ev_is_active (w)))	2351	if (expect_false (ev_is_active (w)))
2140	return;	2352	return;
2141		2353
2142	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2354	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2143		2355
2144	evpipe_init (EV_A);	2356	evpipe_init (EV_A);
		2357
		2358	EV_FREQUENT_CHECK;
2145		2359
2146	{	2360	{
2147	#ifndef _WIN32	2361	#ifndef _WIN32
2148	sigset_t full, prev;	2362	sigset_t full, prev;
2149	sigfillset (&full);	2363	sigfillset (&full);
2150	sigprocmask (SIG_SETMASK, &full, &prev);	2364	sigprocmask (SIG_SETMASK, &full, &prev);
2151	#endif	2365	#endif
2152		2366
2153	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2367	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2154		2368
2155	#ifndef _WIN32	2369	#ifndef _WIN32
2156	sigprocmask (SIG_SETMASK, &prev, 0);	2370	sigprocmask (SIG_SETMASK, &prev, 0);
2157	#endif	2371	#endif
2158	}	2372	}
…		…
2170	sigfillset (&sa.sa_mask);	2384	sigfillset (&sa.sa_mask);
2171	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2385	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2172	sigaction (w->signum, &sa, 0);	2386	sigaction (w->signum, &sa, 0);
2173	#endif	2387	#endif
2174	}	2388	}
		2389
		2390	EV_FREQUENT_CHECK;
2175	}	2391	}
2176		2392
2177	void noinline	2393	void noinline
2178	ev_signal_stop (EV_P_ ev_signal *w)	2394	ev_signal_stop (EV_P_ ev_signal *w)
2179	{	2395	{
2180	clear_pending (EV_A_ (W)w);	2396	clear_pending (EV_A_ (W)w);
2181	if (expect_false (!ev_is_active (w)))	2397	if (expect_false (!ev_is_active (w)))
2182	return;	2398	return;
2183		2399
		2400	EV_FREQUENT_CHECK;
		2401
2184	wlist_del (&signals [w->signum - 1].head, (WL)w);	2402	wlist_del (&signals [w->signum - 1].head, (WL)w);
2185	ev_stop (EV_A_ (W)w);	2403	ev_stop (EV_A_ (W)w);
2186		2404
2187	if (!signals [w->signum - 1].head)	2405	if (!signals [w->signum - 1].head)
2188	signal (w->signum, SIG_DFL);	2406	signal (w->signum, SIG_DFL);
		2407
		2408	EV_FREQUENT_CHECK;
2189	}	2409	}
2190		2410
2191	void	2411	void
2192	ev_child_start (EV_P_ ev_child *w)	2412	ev_child_start (EV_P_ ev_child *w)
2193	{	2413	{
2194	#if EV_MULTIPLICITY	2414	#if EV_MULTIPLICITY
2195	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2415	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2196	#endif	2416	#endif
2197	if (expect_false (ev_is_active (w)))	2417	if (expect_false (ev_is_active (w)))
2198	return;	2418	return;
2199		2419
		2420	EV_FREQUENT_CHECK;
		2421
2200	ev_start (EV_A_ (W)w, 1);	2422	ev_start (EV_A_ (W)w, 1);
2201	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2423	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2424
		2425	EV_FREQUENT_CHECK;
2202	}	2426	}
2203		2427
2204	void	2428	void
2205	ev_child_stop (EV_P_ ev_child *w)	2429	ev_child_stop (EV_P_ ev_child *w)
2206	{	2430	{
2207	clear_pending (EV_A_ (W)w);	2431	clear_pending (EV_A_ (W)w);
2208	if (expect_false (!ev_is_active (w)))	2432	if (expect_false (!ev_is_active (w)))
2209	return;	2433	return;
2210		2434
		2435	EV_FREQUENT_CHECK;
		2436
2211	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2437	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2212	ev_stop (EV_A_ (W)w);	2438	ev_stop (EV_A_ (W)w);
		2439
		2440	EV_FREQUENT_CHECK;
2213	}	2441	}
2214		2442
2215	#if EV_STAT_ENABLE	2443	#if EV_STAT_ENABLE
2216		2444
2217	# ifdef _WIN32	2445	# ifdef _WIN32
2218	# undef lstat	2446	# undef lstat
2219	# define lstat(a,b) _stati64 (a,b)	2447	# define lstat(a,b) _stati64 (a,b)
2220	# endif	2448	# endif
2221		2449
2222	#define DEF_STAT_INTERVAL 5.0074891	2450	#define DEF_STAT_INTERVAL 5.0074891
		2451	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2223	#define MIN_STAT_INTERVAL 0.1074891	2452	#define MIN_STAT_INTERVAL 0.1074891
2224		2453
2225	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2454	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2226		2455
2227	#if EV_USE_INOTIFY	2456	#if EV_USE_INOTIFY
2228	# define EV_INOTIFY_BUFSIZE 8192	2457	# define EV_INOTIFY_BUFSIZE 8192
…		…
2232	{	2461	{
2233	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);	2462	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);
2234		2463
2235	if (w->wd < 0)	2464	if (w->wd < 0)
2236	{	2465	{
		2466	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2237	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2467	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2238		2468
2239	/* monitor some parent directory for speedup hints */	2469	/* monitor some parent directory for speedup hints */
2240	/* note that exceeding the hardcoded limit is not a correctness issue, */	2470	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2241	/* but an efficiency issue only */	2471	/* but an efficiency issue only */
2242	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2472	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2243	{	2473	{
2244	char path [4096];	2474	char path [4096];
2245	strcpy (path, w->path);	2475	strcpy (path, w->path);
…		…
2249	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2479	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2250	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2480	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2251		2481
2252	char *pend = strrchr (path, '/');	2482	char *pend = strrchr (path, '/');
2253		2483
2254	if (!pend)	2484	if (!pend || pend == path)
2255	break; /* whoops, no '/', complain to your admin */	2485	break;
2256		2486
2257	*pend = 0;	2487	*pend = 0;
2258	w->wd = inotify_add_watch (fs_fd, path, mask);	2488	w->wd = inotify_add_watch (fs_fd, path, mask);
2259	}	2489	}
2260	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2490	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2261	}	2491	}
2262	}	2492	}
2263	else
2264	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2265		2493
2266	if (w->wd >= 0)	2494	if (w->wd >= 0)
		2495	{
2267	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2496	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2497
		2498	/* now local changes will be tracked by inotify, but remote changes won't */
		2499	/* unless the filesystem it known to be local, we therefore still poll */
		2500	/* also do poll on <2.6.25, but with normal frequency */
		2501	struct statfs sfs;
		2502
		2503	if (fs_2625 && !statfs (w->path, &sfs))
		2504	if (sfs.f_type == 0x1373 /* devfs */
		2505	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2506	|| sfs.f_type == 0x3153464a /* jfs */
		2507	|| sfs.f_type == 0x52654973 /* reiser3 */
		2508	|| sfs.f_type == 0x01021994 /* tempfs */
		2509	|| sfs.f_type == 0x58465342 /* xfs */)
		2510	return;
		2511
		2512	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2513	ev_timer_again (EV_A_ &w->timer);
		2514	}
2268	}	2515	}
2269		2516
2270	static void noinline	2517	static void noinline
2271	infy_del (EV_P_ ev_stat *w)	2518	infy_del (EV_P_ ev_stat *w)
2272	{	2519	{
…		…
2286		2533
2287	static void noinline	2534	static void noinline
2288	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2535	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2289	{	2536	{
2290	if (slot < 0)	2537	if (slot < 0)
2291	/* overflow, need to check for all hahs slots */	2538	/* overflow, need to check for all hash slots */
2292	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2539	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2293	infy_wd (EV_A_ slot, wd, ev);	2540	infy_wd (EV_A_ slot, wd, ev);
2294	else	2541	else
2295	{	2542	{
2296	WL w_;	2543	WL w_;
…		…
2302		2549
2303	if (w->wd == wd || wd == -1)	2550	if (w->wd == wd || wd == -1)
2304	{	2551	{
2305	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2552	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2306	{	2553	{
		2554	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2307	w->wd = -1;	2555	w->wd = -1;
2308	infy_add (EV_A_ w); /* re-add, no matter what */	2556	infy_add (EV_A_ w); /* re-add, no matter what */
2309	}	2557	}
2310		2558
2311	stat_timer_cb (EV_A_ &w->timer, 0);	2559	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2325	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2573	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2326	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2574	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2327	}	2575	}
2328		2576
2329	void inline_size	2577	void inline_size
		2578	check_2625 (EV_P)
		2579	{
		2580	/* kernels < 2.6.25 are borked
		2581	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2582	*/
		2583	struct utsname buf;
		2584	int major, minor, micro;
		2585
		2586	if (uname (&buf))
		2587	return;
		2588
		2589	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2590	return;
		2591
		2592	if (major < 2
		2593	|| (major == 2 && minor < 6)
		2594	|| (major == 2 && minor == 6 && micro < 25))
		2595	return;
		2596
		2597	fs_2625 = 1;
		2598	}
		2599
		2600	void inline_size
2330	infy_init (EV_P)	2601	infy_init (EV_P)
2331	{	2602	{
2332	if (fs_fd != -2)	2603	if (fs_fd != -2)
2333	return;	2604	return;
		2605
		2606	fs_fd = -1;
		2607
		2608	check_2625 (EV_A);
2334		2609
2335	fs_fd = inotify_init ();	2610	fs_fd = inotify_init ();
2336		2611
2337	if (fs_fd >= 0)	2612	if (fs_fd >= 0)
2338	{	2613	{
…		…
2366	w->wd = -1;	2641	w->wd = -1;
2367		2642
2368	if (fs_fd >= 0)	2643	if (fs_fd >= 0)
2369	infy_add (EV_A_ w); /* re-add, no matter what */	2644	infy_add (EV_A_ w); /* re-add, no matter what */
2370	else	2645	else
2371	ev_timer_start (EV_A_ &w->timer);	2646	ev_timer_again (EV_A_ &w->timer);
2372	}	2647	}
2373
2374	}	2648	}
2375	}	2649	}
2376		2650
		2651	#endif
		2652
		2653	#ifdef _WIN32
		2654	# define EV_LSTAT(p,b) _stati64 (p, b)
		2655	#else
		2656	# define EV_LSTAT(p,b) lstat (p, b)
2377	#endif	2657	#endif
2378		2658
2379	void	2659	void
2380	ev_stat_stat (EV_P_ ev_stat *w)	2660	ev_stat_stat (EV_P_ ev_stat *w)
2381	{	2661	{
…		…
2408	|| w->prev.st_atime != w->attr.st_atime	2688	|| w->prev.st_atime != w->attr.st_atime
2409	|| w->prev.st_mtime != w->attr.st_mtime	2689	|| w->prev.st_mtime != w->attr.st_mtime
2410	|| w->prev.st_ctime != w->attr.st_ctime	2690	|| w->prev.st_ctime != w->attr.st_ctime
2411	) {	2691	) {
2412	#if EV_USE_INOTIFY	2692	#if EV_USE_INOTIFY
		2693	if (fs_fd >= 0)
		2694	{
2413	infy_del (EV_A_ w);	2695	infy_del (EV_A_ w);
2414	infy_add (EV_A_ w);	2696	infy_add (EV_A_ w);
2415	ev_stat_stat (EV_A_ w); /* avoid race... */	2697	ev_stat_stat (EV_A_ w); /* avoid race... */
		2698	}
2416	#endif	2699	#endif
2417		2700
2418	ev_feed_event (EV_A_ w, EV_STAT);	2701	ev_feed_event (EV_A_ w, EV_STAT);
2419	}	2702	}
2420	}	2703	}
…		…
2423	ev_stat_start (EV_P_ ev_stat *w)	2706	ev_stat_start (EV_P_ ev_stat *w)
2424	{	2707	{
2425	if (expect_false (ev_is_active (w)))	2708	if (expect_false (ev_is_active (w)))
2426	return;	2709	return;
2427		2710
2428	/* since we use memcmp, we need to clear any padding data etc. */
2429	memset (&w->prev, 0, sizeof (ev_statdata));
2430	memset (&w->attr, 0, sizeof (ev_statdata));
2431
2432	ev_stat_stat (EV_A_ w);	2711	ev_stat_stat (EV_A_ w);
2433		2712
		2713	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2434	if (w->interval < MIN_STAT_INTERVAL)	2714	w->interval = MIN_STAT_INTERVAL;
2435	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2436		2715
2437	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2716	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2438	ev_set_priority (&w->timer, ev_priority (w));	2717	ev_set_priority (&w->timer, ev_priority (w));
2439		2718
2440	#if EV_USE_INOTIFY	2719	#if EV_USE_INOTIFY
2441	infy_init (EV_A);	2720	infy_init (EV_A);
2442		2721
2443	if (fs_fd >= 0)	2722	if (fs_fd >= 0)
2444	infy_add (EV_A_ w);	2723	infy_add (EV_A_ w);
2445	else	2724	else
2446	#endif	2725	#endif
2447	ev_timer_start (EV_A_ &w->timer);	2726	ev_timer_again (EV_A_ &w->timer);
2448		2727
2449	ev_start (EV_A_ (W)w, 1);	2728	ev_start (EV_A_ (W)w, 1);
		2729
		2730	EV_FREQUENT_CHECK;
2450	}	2731	}
2451		2732
2452	void	2733	void
2453	ev_stat_stop (EV_P_ ev_stat *w)	2734	ev_stat_stop (EV_P_ ev_stat *w)
2454	{	2735	{
2455	clear_pending (EV_A_ (W)w);	2736	clear_pending (EV_A_ (W)w);
2456	if (expect_false (!ev_is_active (w)))	2737	if (expect_false (!ev_is_active (w)))
2457	return;	2738	return;
2458		2739
		2740	EV_FREQUENT_CHECK;
		2741
2459	#if EV_USE_INOTIFY	2742	#if EV_USE_INOTIFY
2460	infy_del (EV_A_ w);	2743	infy_del (EV_A_ w);
2461	#endif	2744	#endif
2462	ev_timer_stop (EV_A_ &w->timer);	2745	ev_timer_stop (EV_A_ &w->timer);
2463		2746
2464	ev_stop (EV_A_ (W)w);	2747	ev_stop (EV_A_ (W)w);
		2748
		2749	EV_FREQUENT_CHECK;
2465	}	2750	}
2466	#endif	2751	#endif
2467		2752
2468	#if EV_IDLE_ENABLE	2753	#if EV_IDLE_ENABLE
2469	void	2754	void
…		…
2471	{	2756	{
2472	if (expect_false (ev_is_active (w)))	2757	if (expect_false (ev_is_active (w)))
2473	return;	2758	return;
2474		2759
2475	pri_adjust (EV_A_ (W)w);	2760	pri_adjust (EV_A_ (W)w);
		2761
		2762	EV_FREQUENT_CHECK;
2476		2763
2477	{	2764	{
2478	int active = ++idlecnt [ABSPRI (w)];	2765	int active = ++idlecnt [ABSPRI (w)];
2479		2766
2480	++idleall;	2767	++idleall;
2481	ev_start (EV_A_ (W)w, active);	2768	ev_start (EV_A_ (W)w, active);
2482		2769
2483	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	2770	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2484	idles [ABSPRI (w)][active - 1] = w;	2771	idles [ABSPRI (w)][active - 1] = w;
2485	}	2772	}
		2773
		2774	EV_FREQUENT_CHECK;
2486	}	2775	}
2487		2776
2488	void	2777	void
2489	ev_idle_stop (EV_P_ ev_idle *w)	2778	ev_idle_stop (EV_P_ ev_idle *w)
2490	{	2779	{
2491	clear_pending (EV_A_ (W)w);	2780	clear_pending (EV_A_ (W)w);
2492	if (expect_false (!ev_is_active (w)))	2781	if (expect_false (!ev_is_active (w)))
2493	return;	2782	return;
2494		2783
		2784	EV_FREQUENT_CHECK;
		2785
2495	{	2786	{
2496	int active = ev_active (w);	2787	int active = ev_active (w);
2497		2788
2498	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	2789	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2499	ev_active (idles [ABSPRI (w)][active - 1]) = active;	2790	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2500		2791
2501	ev_stop (EV_A_ (W)w);	2792	ev_stop (EV_A_ (W)w);
2502	--idleall;	2793	--idleall;
2503	}	2794	}
		2795
		2796	EV_FREQUENT_CHECK;
2504	}	2797	}
2505	#endif	2798	#endif
2506		2799
2507	void	2800	void
2508	ev_prepare_start (EV_P_ ev_prepare *w)	2801	ev_prepare_start (EV_P_ ev_prepare *w)
2509	{	2802	{
2510	if (expect_false (ev_is_active (w)))	2803	if (expect_false (ev_is_active (w)))
2511	return;	2804	return;
		2805
		2806	EV_FREQUENT_CHECK;
2512		2807
2513	ev_start (EV_A_ (W)w, ++preparecnt);	2808	ev_start (EV_A_ (W)w, ++preparecnt);
2514	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	2809	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2515	prepares [preparecnt - 1] = w;	2810	prepares [preparecnt - 1] = w;
		2811
		2812	EV_FREQUENT_CHECK;
2516	}	2813	}
2517		2814
2518	void	2815	void
2519	ev_prepare_stop (EV_P_ ev_prepare *w)	2816	ev_prepare_stop (EV_P_ ev_prepare *w)
2520	{	2817	{
2521	clear_pending (EV_A_ (W)w);	2818	clear_pending (EV_A_ (W)w);
2522	if (expect_false (!ev_is_active (w)))	2819	if (expect_false (!ev_is_active (w)))
2523	return;	2820	return;
2524		2821
		2822	EV_FREQUENT_CHECK;
		2823
2525	{	2824	{
2526	int active = ev_active (w);	2825	int active = ev_active (w);
2527		2826
2528	prepares [active - 1] = prepares [--preparecnt];	2827	prepares [active - 1] = prepares [--preparecnt];
2529	ev_active (prepares [active - 1]) = active;	2828	ev_active (prepares [active - 1]) = active;
2530	}	2829	}
2531		2830
2532	ev_stop (EV_A_ (W)w);	2831	ev_stop (EV_A_ (W)w);
		2832
		2833	EV_FREQUENT_CHECK;
2533	}	2834	}
2534		2835
2535	void	2836	void
2536	ev_check_start (EV_P_ ev_check *w)	2837	ev_check_start (EV_P_ ev_check *w)
2537	{	2838	{
2538	if (expect_false (ev_is_active (w)))	2839	if (expect_false (ev_is_active (w)))
2539	return;	2840	return;
		2841
		2842	EV_FREQUENT_CHECK;
2540		2843
2541	ev_start (EV_A_ (W)w, ++checkcnt);	2844	ev_start (EV_A_ (W)w, ++checkcnt);
2542	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	2845	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2543	checks [checkcnt - 1] = w;	2846	checks [checkcnt - 1] = w;
		2847
		2848	EV_FREQUENT_CHECK;
2544	}	2849	}
2545		2850
2546	void	2851	void
2547	ev_check_stop (EV_P_ ev_check *w)	2852	ev_check_stop (EV_P_ ev_check *w)
2548	{	2853	{
2549	clear_pending (EV_A_ (W)w);	2854	clear_pending (EV_A_ (W)w);
2550	if (expect_false (!ev_is_active (w)))	2855	if (expect_false (!ev_is_active (w)))
2551	return;	2856	return;
2552		2857
		2858	EV_FREQUENT_CHECK;
		2859
2553	{	2860	{
2554	int active = ev_active (w);	2861	int active = ev_active (w);
2555		2862
2556	checks [active - 1] = checks [--checkcnt];	2863	checks [active - 1] = checks [--checkcnt];
2557	ev_active (checks [active - 1]) = active;	2864	ev_active (checks [active - 1]) = active;
2558	}	2865	}
2559		2866
2560	ev_stop (EV_A_ (W)w);	2867	ev_stop (EV_A_ (W)w);
		2868
		2869	EV_FREQUENT_CHECK;
2561	}	2870	}
2562		2871
2563	#if EV_EMBED_ENABLE	2872	#if EV_EMBED_ENABLE
2564	void noinline	2873	void noinline
2565	ev_embed_sweep (EV_P_ ev_embed *w)	2874	ev_embed_sweep (EV_P_ ev_embed *w)
…		…
2592	ev_loop (EV_A_ EVLOOP_NONBLOCK);	2901	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2593	}	2902	}
2594	}	2903	}
2595	}	2904	}
2596		2905
		2906	static void
		2907	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		2908	{
		2909	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		2910
		2911	ev_embed_stop (EV_A_ w);
		2912
		2913	{
		2914	struct ev_loop *loop = w->other;
		2915
		2916	ev_loop_fork (EV_A);
		2917	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2918	}
		2919
		2920	ev_embed_start (EV_A_ w);
		2921	}
		2922
2597	#if 0	2923	#if 0
2598	static void	2924	static void
2599	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	2925	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2600	{	2926	{
2601	ev_idle_stop (EV_A_ idle);	2927	ev_idle_stop (EV_A_ idle);
…		…
2608	if (expect_false (ev_is_active (w)))	2934	if (expect_false (ev_is_active (w)))
2609	return;	2935	return;
2610		2936
2611	{	2937	{
2612	struct ev_loop *loop = w->other;	2938	struct ev_loop *loop = w->other;
2613	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2939	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2614	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	2940	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2615	}	2941	}
		2942
		2943	EV_FREQUENT_CHECK;
2616		2944
2617	ev_set_priority (&w->io, ev_priority (w));	2945	ev_set_priority (&w->io, ev_priority (w));
2618	ev_io_start (EV_A_ &w->io);	2946	ev_io_start (EV_A_ &w->io);
2619		2947
2620	ev_prepare_init (&w->prepare, embed_prepare_cb);	2948	ev_prepare_init (&w->prepare, embed_prepare_cb);
2621	ev_set_priority (&w->prepare, EV_MINPRI);	2949	ev_set_priority (&w->prepare, EV_MINPRI);
2622	ev_prepare_start (EV_A_ &w->prepare);	2950	ev_prepare_start (EV_A_ &w->prepare);
2623		2951
		2952	ev_fork_init (&w->fork, embed_fork_cb);
		2953	ev_fork_start (EV_A_ &w->fork);
		2954
2624	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	2955	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2625		2956
2626	ev_start (EV_A_ (W)w, 1);	2957	ev_start (EV_A_ (W)w, 1);
		2958
		2959	EV_FREQUENT_CHECK;
2627	}	2960	}
2628		2961
2629	void	2962	void
2630	ev_embed_stop (EV_P_ ev_embed *w)	2963	ev_embed_stop (EV_P_ ev_embed *w)
2631	{	2964	{
2632	clear_pending (EV_A_ (W)w);	2965	clear_pending (EV_A_ (W)w);
2633	if (expect_false (!ev_is_active (w)))	2966	if (expect_false (!ev_is_active (w)))
2634	return;	2967	return;
2635		2968
		2969	EV_FREQUENT_CHECK;
		2970
2636	ev_io_stop (EV_A_ &w->io);	2971	ev_io_stop (EV_A_ &w->io);
2637	ev_prepare_stop (EV_A_ &w->prepare);	2972	ev_prepare_stop (EV_A_ &w->prepare);
		2973	ev_fork_stop (EV_A_ &w->fork);
2638		2974
2639	ev_stop (EV_A_ (W)w);	2975	EV_FREQUENT_CHECK;
2640	}	2976	}
2641	#endif	2977	#endif
2642		2978
2643	#if EV_FORK_ENABLE	2979	#if EV_FORK_ENABLE
2644	void	2980	void
2645	ev_fork_start (EV_P_ ev_fork *w)	2981	ev_fork_start (EV_P_ ev_fork *w)
2646	{	2982	{
2647	if (expect_false (ev_is_active (w)))	2983	if (expect_false (ev_is_active (w)))
2648	return;	2984	return;
		2985
		2986	EV_FREQUENT_CHECK;
2649		2987
2650	ev_start (EV_A_ (W)w, ++forkcnt);	2988	ev_start (EV_A_ (W)w, ++forkcnt);
2651	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	2989	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2652	forks [forkcnt - 1] = w;	2990	forks [forkcnt - 1] = w;
		2991
		2992	EV_FREQUENT_CHECK;
2653	}	2993	}
2654		2994
2655	void	2995	void
2656	ev_fork_stop (EV_P_ ev_fork *w)	2996	ev_fork_stop (EV_P_ ev_fork *w)
2657	{	2997	{
2658	clear_pending (EV_A_ (W)w);	2998	clear_pending (EV_A_ (W)w);
2659	if (expect_false (!ev_is_active (w)))	2999	if (expect_false (!ev_is_active (w)))
2660	return;	3000	return;
2661		3001
		3002	EV_FREQUENT_CHECK;
		3003
2662	{	3004	{
2663	int active = ev_active (w);	3005	int active = ev_active (w);
2664		3006
2665	forks [active - 1] = forks [--forkcnt];	3007	forks [active - 1] = forks [--forkcnt];
2666	ev_active (forks [active - 1]) = active;	3008	ev_active (forks [active - 1]) = active;
2667	}	3009	}
2668		3010
2669	ev_stop (EV_A_ (W)w);	3011	ev_stop (EV_A_ (W)w);
		3012
		3013	EV_FREQUENT_CHECK;
2670	}	3014	}
2671	#endif	3015	#endif
2672		3016
2673	#if EV_ASYNC_ENABLE	3017	#if EV_ASYNC_ENABLE
2674	void	3018	void
…		…
2676	{	3020	{
2677	if (expect_false (ev_is_active (w)))	3021	if (expect_false (ev_is_active (w)))
2678	return;	3022	return;
2679		3023
2680	evpipe_init (EV_A);	3024	evpipe_init (EV_A);
		3025
		3026	EV_FREQUENT_CHECK;
2681		3027
2682	ev_start (EV_A_ (W)w, ++asynccnt);	3028	ev_start (EV_A_ (W)w, ++asynccnt);
2683	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);	3029	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2684	asyncs [asynccnt - 1] = w;	3030	asyncs [asynccnt - 1] = w;
		3031
		3032	EV_FREQUENT_CHECK;
2685	}	3033	}
2686		3034
2687	void	3035	void
2688	ev_async_stop (EV_P_ ev_async *w)	3036	ev_async_stop (EV_P_ ev_async *w)
2689	{	3037	{
2690	clear_pending (EV_A_ (W)w);	3038	clear_pending (EV_A_ (W)w);
2691	if (expect_false (!ev_is_active (w)))	3039	if (expect_false (!ev_is_active (w)))
2692	return;	3040	return;
2693		3041
		3042	EV_FREQUENT_CHECK;
		3043
2694	{	3044	{
2695	int active = ev_active (w);	3045	int active = ev_active (w);
2696		3046
2697	asyncs [active - 1] = asyncs [--asynccnt];	3047	asyncs [active - 1] = asyncs [--asynccnt];
2698	ev_active (asyncs [active - 1]) = active;	3048	ev_active (asyncs [active - 1]) = active;
2699	}	3049	}
2700		3050
2701	ev_stop (EV_A_ (W)w);	3051	ev_stop (EV_A_ (W)w);
		3052
		3053	EV_FREQUENT_CHECK;
2702	}	3054	}
2703		3055
2704	void	3056	void
2705	ev_async_send (EV_P_ ev_async *w)	3057	ev_async_send (EV_P_ ev_async *w)
2706	{	3058	{
…		…
2723	once_cb (EV_P_ struct ev_once *once, int revents)	3075	once_cb (EV_P_ struct ev_once *once, int revents)
2724	{	3076	{
2725	void (*cb)(int revents, void *arg) = once->cb;	3077	void (*cb)(int revents, void *arg) = once->cb;
2726	void *arg = once->arg;	3078	void *arg = once->arg;
2727		3079
2728	ev_io_stop (EV_A_ &once->io);	3080	ev_io_stop (EV_A_ &once->io);
2729	ev_timer_stop (EV_A_ &once->to);	3081	ev_timer_stop (EV_A_ &once->to);
2730	ev_free (once);	3082	ev_free (once);
2731		3083
2732	cb (revents, arg);	3084	cb (revents, arg);
2733	}	3085	}
2734		3086
2735	static void	3087	static void
2736	once_cb_io (EV_P_ ev_io *w, int revents)	3088	once_cb_io (EV_P_ ev_io *w, int revents)
2737	{	3089	{
2738	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3090	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3091
		3092	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2739	}	3093	}
2740		3094
2741	static void	3095	static void
2742	once_cb_to (EV_P_ ev_timer *w, int revents)	3096	once_cb_to (EV_P_ ev_timer *w, int revents)
2743	{	3097	{
2744	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3098	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3099
		3100	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2745	}	3101	}
2746		3102
2747	void	3103	void
2748	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3104	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2749	{	3105	{

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