[ViewVC] Diff of: cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.271 by root, Mon Nov 3 12:13:15 2008 UTC vs.
Revision 1.284 by root, Wed Apr 15 17:49:26 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
…		…
164	# endif	176	# endif
165	#endif	177	#endif
166		178
167	/* 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 */
168		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
169	#ifndef EV_USE_MONOTONIC	189	#ifndef EV_USE_MONOTONIC
170	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0	190	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
171	# define EV_USE_MONOTONIC 1	191	# define EV_USE_MONOTONIC 1
172	# else	192	# else
173	# define EV_USE_MONOTONIC 0	193	# define EV_USE_MONOTONIC 0
174	# endif	194	# endif
175	#endif	195	#endif
176		196
177	#ifndef EV_USE_REALTIME	197	#ifndef EV_USE_REALTIME
178	# define EV_USE_REALTIME 0	198	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
179	#endif	199	#endif
180		200
181	#ifndef EV_USE_NANOSLEEP	201	#ifndef EV_USE_NANOSLEEP
182	# if _POSIX_C_SOURCE >= 199309L	202	# if _POSIX_C_SOURCE >= 199309L
183	# define EV_USE_NANOSLEEP 1	203	# define EV_USE_NANOSLEEP 1
…		…
300		320
301	#if EV_SELECT_IS_WINSOCKET	321	#if EV_SELECT_IS_WINSOCKET
302	# include <winsock.h>	322	# include <winsock.h>
303	#endif	323	#endif
304		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
		332	#endif
		333
305	#if EV_USE_EVENTFD	334	#if EV_USE_EVENTFD
306	/* 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 */
307	# include <stdint.h>	336	# include <stdint.h>
308	# ifdef __cplusplus	337	# ifdef __cplusplus
309	extern "C" {	338	extern "C" {
…		…
368	typedef ev_watcher_time *WT;	397	typedef ev_watcher_time *WT;
369		398
370	#define ev_active(w) ((W)(w))->active	399	#define ev_active(w) ((W)(w))->active
371	#define ev_at(w) ((WT)(w))->at	400	#define ev_at(w) ((WT)(w))->at
372		401
373	#if EV_USE_MONOTONIC	402	#if EV_USE_REALTIME
374	/* 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 */
375	/* 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
376	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? */
377	#endif	410	#endif
378		411
379	#ifdef _WIN32	412	#ifdef _WIN32
380	# include "ev_win32.c"	413	# include "ev_win32.c"
…		…
524		557
525	ev_tstamp	558	ev_tstamp
526	ev_time (void)	559	ev_time (void)
527	{	560	{
528	#if EV_USE_REALTIME	561	#if EV_USE_REALTIME
		562	if (expect_true (have_realtime))
		563	{
529	struct timespec ts;	564	struct timespec ts;
530	clock_gettime (CLOCK_REALTIME, &ts);	565	clock_gettime (CLOCK_REALTIME, &ts);
531	return ts.tv_sec + ts.tv_nsec * 1e-9;	566	return ts.tv_sec + ts.tv_nsec * 1e-9;
532	#else	567	}
		568	#endif
		569
533	struct timeval tv;	570	struct timeval tv;
534	gettimeofday (&tv, 0);	571	gettimeofday (&tv, 0);
535	return tv.tv_sec + tv.tv_usec * 1e-6;	572	return tv.tv_sec + tv.tv_usec * 1e-6;
536	#endif
537	}	573	}
538		574
539	ev_tstamp inline_size	575	inline_size ev_tstamp
540	get_clock (void)	576	get_clock (void)
541	{	577	{
542	#if EV_USE_MONOTONIC	578	#if EV_USE_MONOTONIC
543	if (expect_true (have_monotonic))	579	if (expect_true (have_monotonic))
544	{	580	{
…		…
589		625
590	/*****************************************************************************/	626	/*****************************************************************************/
591		627
592	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2*n and >> 4 longs /	628	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2*n and >> 4 longs /
593		629
594	int inline_size	630	inline_size int
595	array_nextsize (int elem, int cur, int cnt)	631	array_nextsize (int elem, int cur, int cnt)
596	{	632	{
597	int ncur = cur + 1;	633	int ncur = cur + 1;
598		634
599	do	635	do
…		…
640	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	676	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
641	}	677	}
642	#endif	678	#endif
643		679
644	#define array_free(stem, idx) \	680	#define array_free(stem, idx) \
645	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
646		682
647	/*****************************************************************************/	683	/*****************************************************************************/
648		684
649	void noinline	685	void noinline
650	ev_feed_event (EV_P_ void *w, int revents)	686	ev_feed_event (EV_P_ void *w, int revents)
…		…
661	pendings [pri][w_->pending - 1].w = w_;	697	pendings [pri][w_->pending - 1].w = w_;
662	pendings [pri][w_->pending - 1].events = revents;	698	pendings [pri][w_->pending - 1].events = revents;
663	}	699	}
664	}	700	}
665		701
666	void inline_speed	702	inline_speed void
		703	feed_reverse (EV_P_ W w)
		704	{
		705	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		706	rfeeds [rfeedcnt++] = w;
		707	}
		708
		709	inline_size void
		710	feed_reverse_done (EV_P_ int revents)
		711	{
		712	do
		713	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		714	while (rfeedcnt);
		715	}
		716
		717	inline_speed void
667	queue_events (EV_P_ W *events, int eventcnt, int type)	718	queue_events (EV_P_ W *events, int eventcnt, int type)
668	{	719	{
669	int i;	720	int i;
670		721
671	for (i = 0; i < eventcnt; ++i)	722	for (i = 0; i < eventcnt; ++i)
672	ev_feed_event (EV_A_ events [i], type);	723	ev_feed_event (EV_A_ events [i], type);
673	}	724	}
674		725
675	/*****************************************************************************/	726	/*****************************************************************************/
676		727
677	void inline_speed	728	inline_speed void
678	fd_event (EV_P_ int fd, int revents)	729	fd_event (EV_P_ int fd, int revents)
679	{	730	{
680	ANFD *anfd = anfds + fd;	731	ANFD *anfd = anfds + fd;
681	ev_io *w;	732	ev_io *w;
682		733
…		…
694	{	745	{
695	if (fd >= 0 && fd < anfdmax)	746	if (fd >= 0 && fd < anfdmax)
696	fd_event (EV_A_ fd, revents);	747	fd_event (EV_A_ fd, revents);
697	}	748	}
698		749
699	void inline_size	750	inline_size void
700	fd_reify (EV_P)	751	fd_reify (EV_P)
701	{	752	{
702	int i;	753	int i;
703		754
704	for (i = 0; i < fdchangecnt; ++i)	755	for (i = 0; i < fdchangecnt; ++i)
…		…
719	#ifdef EV_FD_TO_WIN32_HANDLE	770	#ifdef EV_FD_TO_WIN32_HANDLE
720	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	771	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
721	#else	772	#else
722	anfd->handle = _get_osfhandle (fd);	773	anfd->handle = _get_osfhandle (fd);
723	#endif	774	#endif
724	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	775	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
725	}	776	}
726	#endif	777	#endif
727		778
728	{	779	{
729	unsigned char o_events = anfd->events;	780	unsigned char o_events = anfd->events;
730	unsigned char o_reify = anfd->reify;	781	unsigned char o_reify = anfd->reify;
731		782
732	anfd->reify = 0;	783	anfd->reify = 0;
733	anfd->events = events;	784	anfd->events = events;
734		785
735	if (o_events != events \|\| o_reify & EV_IOFDSET)	786	if (o_events != events \|\| o_reify & EV__IOFDSET)
736	backend_modify (EV_A_ fd, o_events, events);	787	backend_modify (EV_A_ fd, o_events, events);
737	}	788	}
738	}	789	}
739		790
740	fdchangecnt = 0;	791	fdchangecnt = 0;
741	}	792	}
742		793
743	void inline_size	794	inline_size void
744	fd_change (EV_P_ int fd, int flags)	795	fd_change (EV_P_ int fd, int flags)
745	{	796	{
746	unsigned char reify = anfds [fd].reify;	797	unsigned char reify = anfds [fd].reify;
747	anfds [fd].reify \|= flags;	798	anfds [fd].reify \|= flags;
748		799
…		…
752	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	803	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
753	fdchanges [fdchangecnt - 1] = fd;	804	fdchanges [fdchangecnt - 1] = fd;
754	}	805	}
755	}	806	}
756		807
757	void inline_speed	808	inline_speed void
758	fd_kill (EV_P_ int fd)	809	fd_kill (EV_P_ int fd)
759	{	810	{
760	ev_io *w;	811	ev_io *w;
761		812
762	while ((w = (ev_io *)anfds [fd].head))	813	while ((w = (ev_io *)anfds [fd].head))
…		…
764	ev_io_stop (EV_A_ w);	815	ev_io_stop (EV_A_ w);
765	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	816	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
766	}	817	}
767	}	818	}
768		819
769	int inline_size	820	inline_size int
770	fd_valid (int fd)	821	fd_valid (int fd)
771	{	822	{
772	#ifdef _WIN32	823	#ifdef _WIN32
773	return _get_osfhandle (fd) != -1;	824	return _get_osfhandle (fd) != -1;
774	#else	825	#else
…		…
811	for (fd = 0; fd < anfdmax; ++fd)	862	for (fd = 0; fd < anfdmax; ++fd)
812	if (anfds [fd].events)	863	if (anfds [fd].events)
813	{	864	{
814	anfds [fd].events = 0;	865	anfds [fd].events = 0;
815	anfds [fd].emask = 0;	866	anfds [fd].emask = 0;
816	fd_change (EV_A_ fd, EV_IOFDSET \| 1);	867	fd_change (EV_A_ fd, EV__IOFDSET \| 1);
817	}	868	}
818	}	869	}
819		870
820	/*****************************************************************************/	871	/*****************************************************************************/
821		872
…		…
837	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	888	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
838	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)	889	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
839	#define UPHEAP_DONE(p,k) ((p) == (k))	890	#define UPHEAP_DONE(p,k) ((p) == (k))
840		891
841	/* away from the root */	892	/* away from the root */
842	void inline_speed	893	inline_speed void
843	downheap (ANHE *heap, int N, int k)	894	downheap (ANHE *heap, int N, int k)
844	{	895	{
845	ANHE he = heap [k];	896	ANHE he = heap [k];
846	ANHE *E = heap + N + HEAP0;	897	ANHE *E = heap + N + HEAP0;
847		898
…		…
887	#define HEAP0 1	938	#define HEAP0 1
888	#define HPARENT(k) ((k) >> 1)	939	#define HPARENT(k) ((k) >> 1)
889	#define UPHEAP_DONE(p,k) (!(p))	940	#define UPHEAP_DONE(p,k) (!(p))
890		941
891	/* away from the root */	942	/* away from the root */
892	void inline_speed	943	inline_speed void
893	downheap (ANHE *heap, int N, int k)	944	downheap (ANHE *heap, int N, int k)
894	{	945	{
895	ANHE he = heap [k];	946	ANHE he = heap [k];
896		947
897	for (;;)	948	for (;;)
…		…
917	ev_active (ANHE_w (he)) = k;	968	ev_active (ANHE_w (he)) = k;
918	}	969	}
919	#endif	970	#endif
920		971
921	/* towards the root */	972	/* towards the root */
922	void inline_speed	973	inline_speed void
923	upheap (ANHE *heap, int k)	974	upheap (ANHE *heap, int k)
924	{	975	{
925	ANHE he = heap [k];	976	ANHE he = heap [k];
926		977
927	for (;;)	978	for (;;)
…		…
938		989
939	heap [k] = he;	990	heap [k] = he;
940	ev_active (ANHE_w (he)) = k;	991	ev_active (ANHE_w (he)) = k;
941	}	992	}
942		993
943	void inline_size	994	inline_size void
944	adjustheap (ANHE *heap, int N, int k)	995	adjustheap (ANHE *heap, int N, int k)
945	{	996	{
946	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	997	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
947	upheap (heap, k);	998	upheap (heap, k);
948	else	999	else
949	downheap (heap, N, k);	1000	downheap (heap, N, k);
950	}	1001	}
951		1002
952	/* rebuild the heap: this function is used only once and executed rarely */	1003	/* rebuild the heap: this function is used only once and executed rarely */
953	void inline_size	1004	inline_size void
954	reheap (ANHE *heap, int N)	1005	reheap (ANHE *heap, int N)
955	{	1006	{
956	int i;	1007	int i;
957		1008
958	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */	1009	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
…		…
974		1025
975	static EV_ATOMIC_T gotsig;	1026	static EV_ATOMIC_T gotsig;
976		1027
977	/*****************************************************************************/	1028	/*****************************************************************************/
978		1029
979	void inline_speed	1030	inline_speed void
980	fd_intern (int fd)	1031	fd_intern (int fd)
981	{	1032	{
982	#ifdef _WIN32	1033	#ifdef _WIN32
983	unsigned long arg = 1;	1034	unsigned long arg = 1;
984	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1035	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
1014	ev_io_start (EV_A_ &pipeev);	1065	ev_io_start (EV_A_ &pipeev);
1015	ev_unref (EV_A); /* watcher should not keep loop alive */	1066	ev_unref (EV_A); /* watcher should not keep loop alive */
1016	}	1067	}
1017	}	1068	}
1018		1069
1019	void inline_size	1070	inline_size void
1020	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1071	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1021	{	1072	{
1022	if (!*flag)	1073	if (!*flag)
1023	{	1074	{
1024	int old_errno = errno; /* save errno because write might clobber it */	1075	int old_errno = errno; /* save errno because write might clobber it */
…		…
1102	ev_feed_signal_event (EV_P_ int signum)	1153	ev_feed_signal_event (EV_P_ int signum)
1103	{	1154	{
1104	WL w;	1155	WL w;
1105		1156
1106	#if EV_MULTIPLICITY	1157	#if EV_MULTIPLICITY
1107	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1158	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1108	#endif	1159	#endif
1109		1160
1110	--signum;	1161	--signum;
1111		1162
1112	if (signum < 0 \|\| signum >= signalmax)	1163	if (signum < 0 \|\| signum >= signalmax)
…		…
1128		1179
1129	#ifndef WIFCONTINUED	1180	#ifndef WIFCONTINUED
1130	# define WIFCONTINUED(status) 0	1181	# define WIFCONTINUED(status) 0
1131	#endif	1182	#endif
1132		1183
1133	void inline_speed	1184	inline_speed void
1134	child_reap (EV_P_ int chain, int pid, int status)	1185	child_reap (EV_P_ int chain, int pid, int status)
1135	{	1186	{
1136	ev_child *w;	1187	ev_child *w;
1137	int traced = WIFSTOPPED (status) \|\| WIFCONTINUED (status);	1188	int traced = WIFSTOPPED (status) \|\| WIFCONTINUED (status);
1138		1189
…		…
1241	/* kqueue is borked on everything but netbsd apparently */	1292	/* kqueue is borked on everything but netbsd apparently */
1242	/* it usually doesn't work correctly on anything but sockets and pipes */	1293	/* it usually doesn't work correctly on anything but sockets and pipes */
1243	flags &= ~EVBACKEND_KQUEUE;	1294	flags &= ~EVBACKEND_KQUEUE;
1244	#endif	1295	#endif
1245	#ifdef __APPLE__	1296	#ifdef __APPLE__
1246	// flags &= ~EVBACKEND_KQUEUE; for documentation	1297	/* only select works correctly on that "unix-certified" platform */
1247	flags &= ~EVBACKEND_POLL;	1298	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1299	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1248	#endif	1300	#endif
1249		1301
1250	return flags;	1302	return flags;
1251	}	1303	}
1252		1304
…		…
1289	static void noinline	1341	static void noinline
1290	loop_init (EV_P_ unsigned int flags)	1342	loop_init (EV_P_ unsigned int flags)
1291	{	1343	{
1292	if (!backend)	1344	if (!backend)
1293	{	1345	{
		1346	#if EV_USE_REALTIME
		1347	if (!have_realtime)
		1348	{
		1349	struct timespec ts;
		1350
		1351	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1352	have_realtime = 1;
		1353	}
		1354	#endif
		1355
1294	#if EV_USE_MONOTONIC	1356	#if EV_USE_MONOTONIC
		1357	if (!have_monotonic)
1295	{	1358	{
1296	struct timespec ts;	1359	struct timespec ts;
		1360
1297	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1361	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1298	have_monotonic = 1;	1362	have_monotonic = 1;
1299	}	1363	}
1300	#endif	1364	#endif
1301		1365
1302	ev_rt_now = ev_time ();	1366	ev_rt_now = ev_time ();
1303	mn_now = get_clock ();	1367	mn_now = get_clock ();
1304	now_floor = mn_now;	1368	now_floor = mn_now;
…		…
1403	}	1467	}
1404		1468
1405	ev_free (anfds); anfdmax = 0;	1469	ev_free (anfds); anfdmax = 0;
1406		1470
1407	/* have to use the microsoft-never-gets-it-right macro */	1471	/* have to use the microsoft-never-gets-it-right macro */
		1472	array_free (rfeed, EMPTY);
1408	array_free (fdchange, EMPTY);	1473	array_free (fdchange, EMPTY);
1409	array_free (timer, EMPTY);	1474	array_free (timer, EMPTY);
1410	#if EV_PERIODIC_ENABLE	1475	#if EV_PERIODIC_ENABLE
1411	array_free (periodic, EMPTY);	1476	array_free (periodic, EMPTY);
1412	#endif	1477	#endif
…		…
1421		1486
1422	backend = 0;	1487	backend = 0;
1423	}	1488	}
1424		1489
1425	#if EV_USE_INOTIFY	1490	#if EV_USE_INOTIFY
1426	void inline_size infy_fork (EV_P);	1491	inline_size void infy_fork (EV_P);
1427	#endif	1492	#endif
1428		1493
1429	void inline_size	1494	inline_size void
1430	loop_fork (EV_P)	1495	loop_fork (EV_P)
1431	{	1496	{
1432	#if EV_USE_PORT	1497	#if EV_USE_PORT
1433	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1498	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1434	#endif	1499	#endif
…		…
1505		1570
1506	#if EV_VERIFY	1571	#if EV_VERIFY
1507	static void noinline	1572	static void noinline
1508	verify_watcher (EV_P_ W w)	1573	verify_watcher (EV_P_ W w)
1509	{	1574	{
1510	assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));	1575	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1511		1576
1512	if (w->pending)	1577	if (w->pending)
1513	assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));	1578	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1514	}	1579	}
1515		1580
1516	static void noinline	1581	static void noinline
1517	verify_heap (EV_P_ ANHE *heap, int N)	1582	verify_heap (EV_P_ ANHE *heap, int N)
1518	{	1583	{
1519	int i;	1584	int i;
1520		1585
1521	for (i = HEAP0; i < N + HEAP0; ++i)	1586	for (i = HEAP0; i < N + HEAP0; ++i)
1522	{	1587	{
1523	assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));	1588	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1524	assert (("heap condition violated", i == HEAP0 \|\| ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));	1589	assert (("libev: heap condition violated", i == HEAP0 \|\| ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1525	assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));	1590	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1526		1591
1527	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));	1592	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1528	}	1593	}
1529	}	1594	}
1530		1595
1531	static void noinline	1596	static void noinline
1532	array_verify (EV_P_ W *ws, int cnt)	1597	array_verify (EV_P_ W *ws, int cnt)
1533	{	1598	{
1534	while (cnt--)	1599	while (cnt--)
1535	{	1600	{
1536	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));	1601	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1537	verify_watcher (EV_A_ ws [cnt]);	1602	verify_watcher (EV_A_ ws [cnt]);
1538	}	1603	}
1539	}	1604	}
1540	#endif	1605	#endif
1541		1606
…		…
1548		1613
1549	assert (activecnt >= -1);	1614	assert (activecnt >= -1);
1550		1615
1551	assert (fdchangemax >= fdchangecnt);	1616	assert (fdchangemax >= fdchangecnt);
1552	for (i = 0; i < fdchangecnt; ++i)	1617	for (i = 0; i < fdchangecnt; ++i)
1553	assert (("negative fd in fdchanges", fdchanges [i] >= 0));	1618	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1554		1619
1555	assert (anfdmax >= 0);	1620	assert (anfdmax >= 0);
1556	for (i = 0; i < anfdmax; ++i)	1621	for (i = 0; i < anfdmax; ++i)
1557	for (w = anfds [i].head; w; w = w->next)	1622	for (w = anfds [i].head; w; w = w->next)
1558	{	1623	{
1559	verify_watcher (EV_A_ (W)w);	1624	verify_watcher (EV_A_ (W)w);
1560	assert (("inactive fd watcher on anfd list", ev_active (w) == 1));	1625	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1561	assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));	1626	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1562	}	1627	}
1563		1628
1564	assert (timermax >= timercnt);	1629	assert (timermax >= timercnt);
1565	verify_heap (EV_A_ timers, timercnt);	1630	verify_heap (EV_A_ timers, timercnt);
1566		1631
…		…
1671	ev_invoke (EV_P_ void *w, int revents)	1736	ev_invoke (EV_P_ void *w, int revents)
1672	{	1737	{
1673	EV_CB_INVOKE ((W)w, revents);	1738	EV_CB_INVOKE ((W)w, revents);
1674	}	1739	}
1675		1740
1676	void inline_speed	1741	inline_speed void
1677	call_pending (EV_P)	1742	call_pending (EV_P)
1678	{	1743	{
1679	int pri;	1744	int pri;
1680		1745
1681	for (pri = NUMPRI; pri--; )	1746	for (pri = NUMPRI; pri--; )
…		…
1683	{	1748	{
1684	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1749	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1685		1750
1686	if (expect_true (p->w))	1751	if (expect_true (p->w))
1687	{	1752	{
1688	/assert (("non-pending watcher on pending list", p->w->pending));/	1753	/assert (("libev: non-pending watcher on pending list", p->w->pending));/
1689		1754
1690	p->w->pending = 0;	1755	p->w->pending = 0;
1691	EV_CB_INVOKE (p->w, p->events);	1756	EV_CB_INVOKE (p->w, p->events);
1692	EV_FREQUENT_CHECK;	1757	EV_FREQUENT_CHECK;
1693	}	1758	}
1694	}	1759	}
1695	}	1760	}
1696		1761
1697	#if EV_IDLE_ENABLE	1762	#if EV_IDLE_ENABLE
1698	void inline_size	1763	inline_size void
1699	idle_reify (EV_P)	1764	idle_reify (EV_P)
1700	{	1765	{
1701	if (expect_false (idleall))	1766	if (expect_false (idleall))
1702	{	1767	{
1703	int pri;	1768	int pri;
…		…
1715	}	1780	}
1716	}	1781	}
1717	}	1782	}
1718	#endif	1783	#endif
1719		1784
1720	void inline_size	1785	inline_size void
1721	timers_reify (EV_P)	1786	timers_reify (EV_P)
1722	{	1787	{
1723	EV_FREQUENT_CHECK;	1788	EV_FREQUENT_CHECK;
1724		1789
1725	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	1790	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1726	{	1791	{
1727	ev_timer w = (ev_timer )ANHE_w (timers [HEAP0]);	1792	do
1728
1729	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/
1730
1731	/* first reschedule or stop timer */
1732	if (w->repeat)
1733	{	1793	{
		1794	ev_timer w = (ev_timer )ANHE_w (timers [HEAP0]);
		1795
		1796	/assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));/
		1797
		1798	/* first reschedule or stop timer */
		1799	if (w->repeat)
		1800	{
1734	ev_at (w) += w->repeat;	1801	ev_at (w) += w->repeat;
1735	if (ev_at (w) < mn_now)	1802	if (ev_at (w) < mn_now)
1736	ev_at (w) = mn_now;	1803	ev_at (w) = mn_now;
1737		1804
1738	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1805	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1739		1806
1740	ANHE_at_cache (timers [HEAP0]);	1807	ANHE_at_cache (timers [HEAP0]);
1741	downheap (timers, timercnt, HEAP0);	1808	downheap (timers, timercnt, HEAP0);
		1809	}
		1810	else
		1811	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1812
		1813	EV_FREQUENT_CHECK;
		1814	feed_reverse (EV_A_ (W)w);
1742	}	1815	}
1743	else	1816	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1744	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1745		1817
1746	EV_FREQUENT_CHECK;
1747	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1818	feed_reverse_done (EV_A_ EV_TIMEOUT);
1748	}	1819	}
1749	}	1820	}
1750		1821
1751	#if EV_PERIODIC_ENABLE	1822	#if EV_PERIODIC_ENABLE
1752	void inline_size	1823	inline_size void
1753	periodics_reify (EV_P)	1824	periodics_reify (EV_P)
1754	{	1825	{
1755	EV_FREQUENT_CHECK;	1826	EV_FREQUENT_CHECK;
1756		1827
1757	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	1828	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1758	{	1829	{
1759	ev_periodic w = (ev_periodic )ANHE_w (periodics [HEAP0]);	1830	int feed_count = 0;
1760		1831
1761	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/	1832	do
1762
1763	/* first reschedule or stop timer */
1764	if (w->reschedule_cb)
1765	{	1833	{
		1834	ev_periodic w = (ev_periodic )ANHE_w (periodics [HEAP0]);
		1835
		1836	/assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));/
		1837
		1838	/* first reschedule or stop timer */
		1839	if (w->reschedule_cb)
		1840	{
1766	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1841	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1767		1842
1768	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));	1843	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1769		1844
1770	ANHE_at_cache (periodics [HEAP0]);	1845	ANHE_at_cache (periodics [HEAP0]);
1771	downheap (periodics, periodiccnt, HEAP0);	1846	downheap (periodics, periodiccnt, HEAP0);
		1847	}
		1848	else if (w->interval)
		1849	{
		1850	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1851	/* if next trigger time is not sufficiently in the future, put it there */
		1852	/* this might happen because of floating point inexactness */
		1853	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1854	{
		1855	ev_at (w) += w->interval;
		1856
		1857	/* if interval is unreasonably low we might still have a time in the past */
		1858	/* so correct this. this will make the periodic very inexact, but the user */
		1859	/* has effectively asked to get triggered more often than possible */
		1860	if (ev_at (w) < ev_rt_now)
		1861	ev_at (w) = ev_rt_now;
		1862	}
		1863
		1864	ANHE_at_cache (periodics [HEAP0]);
		1865	downheap (periodics, periodiccnt, HEAP0);
		1866	}
		1867	else
		1868	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1869
		1870	EV_FREQUENT_CHECK;
		1871	feed_reverse (EV_A_ (W)w);
1772	}	1872	}
1773	else if (w->interval)	1873	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1774	{
1775	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1776	/* if next trigger time is not sufficiently in the future, put it there */
1777	/* this might happen because of floating point inexactness */
1778	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1779	{
1780	ev_at (w) += w->interval;
1781		1874
1782	/* if interval is unreasonably low we might still have a time in the past */
1783	/* so correct this. this will make the periodic very inexact, but the user */
1784	/* has effectively asked to get triggered more often than possible */
1785	if (ev_at (w) < ev_rt_now)
1786	ev_at (w) = ev_rt_now;
1787	}
1788
1789	ANHE_at_cache (periodics [HEAP0]);
1790	downheap (periodics, periodiccnt, HEAP0);
1791	}
1792	else
1793	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1794
1795	EV_FREQUENT_CHECK;
1796	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1875	feed_reverse_done (EV_A_ EV_PERIODIC);
1797	}	1876	}
1798	}	1877	}
1799		1878
1800	static void noinline	1879	static void noinline
1801	periodics_reschedule (EV_P)	1880	periodics_reschedule (EV_P)
…		…
1817		1896
1818	reheap (periodics, periodiccnt);	1897	reheap (periodics, periodiccnt);
1819	}	1898	}
1820	#endif	1899	#endif
1821		1900
1822	void inline_speed	1901	inline_speed void
1823	time_update (EV_P_ ev_tstamp max_block)	1902	time_update (EV_P_ ev_tstamp max_block)
1824	{	1903	{
1825	int i;	1904	int i;
1826		1905
1827	#if EV_USE_MONOTONIC	1906	#if EV_USE_MONOTONIC
…		…
1948	{	2027	{
1949	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2028	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1950	call_pending (EV_A);	2029	call_pending (EV_A);
1951	}	2030	}
1952		2031
1953	if (expect_false (!activecnt))
1954	break;
1955
1956	/* we might have forked, so reify kernel state if necessary */	2032	/* we might have forked, so reify kernel state if necessary */
1957	if (expect_false (postfork))	2033	if (expect_false (postfork))
1958	loop_fork (EV_A);	2034	loop_fork (EV_A);
1959		2035
1960	/* update fd-related kernel structures */	2036	/* update fd-related kernel structures */
…		…
1967		2043
1968	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))	2044	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))
1969	{	2045	{
1970	/* update time to cancel out callback processing overhead */	2046	/* update time to cancel out callback processing overhead */
1971	time_update (EV_A_ 1e100);	2047	time_update (EV_A_ 1e100);
1972
1973	waittime = MAX_BLOCKTIME;
1974		2048
1975	if (timercnt)	2049	if (timercnt)
1976	{	2050	{
1977	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;	2051	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1978	if (waittime > to) waittime = to;	2052	if (waittime > to) waittime = to;
…		…
2041	loop_done = how;	2115	loop_done = how;
2042	}	2116	}
2043		2117
2044	/*****************************************************************************/	2118	/*****************************************************************************/
2045		2119
2046	void inline_size	2120	inline_size void
2047	wlist_add (WL *head, WL elem)	2121	wlist_add (WL *head, WL elem)
2048	{	2122	{
2049	elem->next = *head;	2123	elem->next = *head;
2050	*head = elem;	2124	*head = elem;
2051	}	2125	}
2052		2126
2053	void inline_size	2127	inline_size void
2054	wlist_del (WL *head, WL elem)	2128	wlist_del (WL *head, WL elem)
2055	{	2129	{
2056	while (*head)	2130	while (*head)
2057	{	2131	{
2058	if (*head == elem)	2132	if (*head == elem)
…		…
2063		2137
2064	head = &(*head)->next;	2138	head = &(*head)->next;
2065	}	2139	}
2066	}	2140	}
2067		2141
2068	void inline_speed	2142	inline_speed void
2069	clear_pending (EV_P_ W w)	2143	clear_pending (EV_P_ W w)
2070	{	2144	{
2071	if (w->pending)	2145	if (w->pending)
2072	{	2146	{
2073	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2147	pendings [ABSPRI (w)][w->pending - 1].w = 0;
…		…
2090	}	2164	}
2091	else	2165	else
2092	return 0;	2166	return 0;
2093	}	2167	}
2094		2168
2095	void inline_size	2169	inline_size void
2096	pri_adjust (EV_P_ W w)	2170	pri_adjust (EV_P_ W w)
2097	{	2171	{
2098	int pri = w->priority;	2172	int pri = w->priority;
2099	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2173	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2100	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2174	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2101	w->priority = pri;	2175	w->priority = pri;
2102	}	2176	}
2103		2177
2104	void inline_speed	2178	inline_speed void
2105	ev_start (EV_P_ W w, int active)	2179	ev_start (EV_P_ W w, int active)
2106	{	2180	{
2107	pri_adjust (EV_A_ w);	2181	pri_adjust (EV_A_ w);
2108	w->active = active;	2182	w->active = active;
2109	ev_ref (EV_A);	2183	ev_ref (EV_A);
2110	}	2184	}
2111		2185
2112	void inline_size	2186	inline_size void
2113	ev_stop (EV_P_ W w)	2187	ev_stop (EV_P_ W w)
2114	{	2188	{
2115	ev_unref (EV_A);	2189	ev_unref (EV_A);
2116	w->active = 0;	2190	w->active = 0;
2117	}	2191	}
…		…
2124	int fd = w->fd;	2198	int fd = w->fd;
2125		2199
2126	if (expect_false (ev_is_active (w)))	2200	if (expect_false (ev_is_active (w)))
2127	return;	2201	return;
2128		2202
2129	assert (("ev_io_start called with negative fd", fd >= 0));	2203	assert (("libev: ev_io_start called with negative fd", fd >= 0));
2130	assert (("ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET \| EV_READ \| EV_WRITE))));	2204	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET \| EV_READ \| EV_WRITE))));
2131		2205
2132	EV_FREQUENT_CHECK;	2206	EV_FREQUENT_CHECK;
2133		2207
2134	ev_start (EV_A_ (W)w, 1);	2208	ev_start (EV_A_ (W)w, 1);
2135	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2209	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2136	wlist_add (&anfds[fd].head, (WL)w);	2210	wlist_add (&anfds[fd].head, (WL)w);
2137		2211
2138	fd_change (EV_A_ fd, w->events & EV_IOFDSET \| 1);	2212	fd_change (EV_A_ fd, w->events & EV__IOFDSET \| 1);
2139	w->events &= ~EV_IOFDSET;	2213	w->events &= ~EV__IOFDSET;
2140		2214
2141	EV_FREQUENT_CHECK;	2215	EV_FREQUENT_CHECK;
2142	}	2216	}
2143		2217
2144	void noinline	2218	void noinline
…		…
2146	{	2220	{
2147	clear_pending (EV_A_ (W)w);	2221	clear_pending (EV_A_ (W)w);
2148	if (expect_false (!ev_is_active (w)))	2222	if (expect_false (!ev_is_active (w)))
2149	return;	2223	return;
2150		2224
2151	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2225	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2152		2226
2153	EV_FREQUENT_CHECK;	2227	EV_FREQUENT_CHECK;
2154		2228
2155	wlist_del (&anfds[w->fd].head, (WL)w);	2229	wlist_del (&anfds[w->fd].head, (WL)w);
2156	ev_stop (EV_A_ (W)w);	2230	ev_stop (EV_A_ (W)w);
…		…
2166	if (expect_false (ev_is_active (w)))	2240	if (expect_false (ev_is_active (w)))
2167	return;	2241	return;
2168		2242
2169	ev_at (w) += mn_now;	2243	ev_at (w) += mn_now;
2170		2244
2171	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2245	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2172		2246
2173	EV_FREQUENT_CHECK;	2247	EV_FREQUENT_CHECK;
2174		2248
2175	++timercnt;	2249	++timercnt;
2176	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);	2250	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
…		…
2179	ANHE_at_cache (timers [ev_active (w)]);	2253	ANHE_at_cache (timers [ev_active (w)]);
2180	upheap (timers, ev_active (w));	2254	upheap (timers, ev_active (w));
2181		2255
2182	EV_FREQUENT_CHECK;	2256	EV_FREQUENT_CHECK;
2183		2257
2184	/assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));/	2258	/assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));/
2185	}	2259	}
2186		2260
2187	void noinline	2261	void noinline
2188	ev_timer_stop (EV_P_ ev_timer *w)	2262	ev_timer_stop (EV_P_ ev_timer *w)
2189	{	2263	{
…		…
2194	EV_FREQUENT_CHECK;	2268	EV_FREQUENT_CHECK;
2195		2269
2196	{	2270	{
2197	int active = ev_active (w);	2271	int active = ev_active (w);
2198		2272
2199	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2273	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2200		2274
2201	--timercnt;	2275	--timercnt;
2202		2276
2203	if (expect_true (active < timercnt + HEAP0))	2277	if (expect_true (active < timercnt + HEAP0))
2204	{	2278	{
…		…
2248		2322
2249	if (w->reschedule_cb)	2323	if (w->reschedule_cb)
2250	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2324	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2251	else if (w->interval)	2325	else if (w->interval)
2252	{	2326	{
2253	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2327	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2254	/* this formula differs from the one in periodic_reify because we do not always round up */	2328	/* this formula differs from the one in periodic_reify because we do not always round up */
2255	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2329	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2256	}	2330	}
2257	else	2331	else
2258	ev_at (w) = w->offset;	2332	ev_at (w) = w->offset;
…		…
2266	ANHE_at_cache (periodics [ev_active (w)]);	2340	ANHE_at_cache (periodics [ev_active (w)]);
2267	upheap (periodics, ev_active (w));	2341	upheap (periodics, ev_active (w));
2268		2342
2269	EV_FREQUENT_CHECK;	2343	EV_FREQUENT_CHECK;
2270		2344
2271	/assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));/	2345	/assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));/
2272	}	2346	}
2273		2347
2274	void noinline	2348	void noinline
2275	ev_periodic_stop (EV_P_ ev_periodic *w)	2349	ev_periodic_stop (EV_P_ ev_periodic *w)
2276	{	2350	{
…		…
2281	EV_FREQUENT_CHECK;	2355	EV_FREQUENT_CHECK;
2282		2356
2283	{	2357	{
2284	int active = ev_active (w);	2358	int active = ev_active (w);
2285		2359
2286	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2360	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2287		2361
2288	--periodiccnt;	2362	--periodiccnt;
2289		2363
2290	if (expect_true (active < periodiccnt + HEAP0))	2364	if (expect_true (active < periodiccnt + HEAP0))
2291	{	2365	{
…		…
2314		2388
2315	void noinline	2389	void noinline
2316	ev_signal_start (EV_P_ ev_signal *w)	2390	ev_signal_start (EV_P_ ev_signal *w)
2317	{	2391	{
2318	#if EV_MULTIPLICITY	2392	#if EV_MULTIPLICITY
2319	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2393	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2320	#endif	2394	#endif
2321	if (expect_false (ev_is_active (w)))	2395	if (expect_false (ev_is_active (w)))
2322	return;	2396	return;
2323		2397
2324	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2398	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2325		2399
2326	evpipe_init (EV_A);	2400	evpipe_init (EV_A);
2327		2401
2328	EV_FREQUENT_CHECK;	2402	EV_FREQUENT_CHECK;
2329		2403
…		…
2380		2454
2381	void	2455	void
2382	ev_child_start (EV_P_ ev_child *w)	2456	ev_child_start (EV_P_ ev_child *w)
2383	{	2457	{
2384	#if EV_MULTIPLICITY	2458	#if EV_MULTIPLICITY
2385	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2459	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2386	#endif	2460	#endif
2387	if (expect_false (ev_is_active (w)))	2461	if (expect_false (ev_is_active (w)))
2388	return;	2462	return;
2389		2463
2390	EV_FREQUENT_CHECK;	2464	EV_FREQUENT_CHECK;
…		…
2415	# ifdef _WIN32	2489	# ifdef _WIN32
2416	# undef lstat	2490	# undef lstat
2417	# define lstat(a,b) _stati64 (a,b)	2491	# define lstat(a,b) _stati64 (a,b)
2418	# endif	2492	# endif
2419		2493
2420	#define DEF_STAT_INTERVAL 5.0074891	2494	#define DEF_STAT_INTERVAL 5.0074891
		2495	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2421	#define MIN_STAT_INTERVAL 0.1074891	2496	#define MIN_STAT_INTERVAL 0.1074891
2422		2497
2423	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2498	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2424		2499
2425	#if EV_USE_INOTIFY	2500	#if EV_USE_INOTIFY
2426	# define EV_INOTIFY_BUFSIZE 8192	2501	# define EV_INOTIFY_BUFSIZE 8192
…		…
2430	{	2505	{
2431	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);	2506	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);
2432		2507
2433	if (w->wd < 0)	2508	if (w->wd < 0)
2434	{	2509	{
		2510	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2435	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2511	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2436		2512
2437	/* monitor some parent directory for speedup hints */	2513	/* monitor some parent directory for speedup hints */
2438	/* note that exceeding the hardcoded path limit is not a correctness issue, */	2514	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2439	/* but an efficiency issue only */	2515	/* but an efficiency issue only */
2440	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)	2516	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)
…		…
2447	int mask = IN_MASK_ADD \| IN_DELETE_SELF \| IN_MOVE_SELF	2523	int mask = IN_MASK_ADD \| IN_DELETE_SELF \| IN_MOVE_SELF
2448	\| (errno == EACCES ? IN_ATTRIB : IN_CREATE \| IN_MOVED_TO);	2524	\| (errno == EACCES ? IN_ATTRIB : IN_CREATE \| IN_MOVED_TO);
2449		2525
2450	char *pend = strrchr (path, '/');	2526	char *pend = strrchr (path, '/');
2451		2527
2452	if (!pend)	2528	if (!pend \|\| pend == path)
2453	break; /* whoops, no '/', complain to your admin */	2529	break;
2454		2530
2455	*pend = 0;	2531	*pend = 0;
2456	w->wd = inotify_add_watch (fs_fd, path, mask);	2532	w->wd = inotify_add_watch (fs_fd, path, mask);
2457	}	2533	}
2458	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));	2534	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));
2459	}	2535	}
2460	}	2536	}
2461	else
2462	todo, on nfs etc., we need to poll every 60s or so
2463	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2464		2537
2465	if (w->wd >= 0)	2538	if (w->wd >= 0)
		2539	{
2466	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2540	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2541
		2542	/* now local changes will be tracked by inotify, but remote changes won't */
		2543	/* unless the filesystem it known to be local, we therefore still poll */
		2544	/* also do poll on <2.6.25, but with normal frequency */
		2545	struct statfs sfs;
		2546
		2547	if (fs_2625 && !statfs (w->path, &sfs))
		2548	if (sfs.f_type == 0x1373 /* devfs */
		2549	\|\| sfs.f_type == 0xEF53 /* ext2/3 */
		2550	\|\| sfs.f_type == 0x3153464a /* jfs */
		2551	\|\| sfs.f_type == 0x52654973 /* reiser3 */
		2552	\|\| sfs.f_type == 0x01021994 /* tempfs */
		2553	\|\| sfs.f_type == 0x58465342 /* xfs */)
		2554	return;
		2555
		2556	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2557	ev_timer_again (EV_A_ &w->timer);
		2558	}
2467	}	2559	}
2468		2560
2469	static void noinline	2561	static void noinline
2470	infy_del (EV_P_ ev_stat *w)	2562	infy_del (EV_P_ ev_stat *w)
2471	{	2563	{
…		…
2501		2593
2502	if (w->wd == wd \|\| wd == -1)	2594	if (w->wd == wd \|\| wd == -1)
2503	{	2595	{
2504	if (ev->mask & (IN_IGNORED \| IN_UNMOUNT \| IN_DELETE_SELF))	2596	if (ev->mask & (IN_IGNORED \| IN_UNMOUNT \| IN_DELETE_SELF))
2505	{	2597	{
		2598	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2506	w->wd = -1;	2599	w->wd = -1;
2507	infy_add (EV_A_ w); /* re-add, no matter what */	2600	infy_add (EV_A_ w); /* re-add, no matter what */
2508	}	2601	}
2509		2602
2510	stat_timer_cb (EV_A_ &w->timer, 0);	2603	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2523		2616
2524	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2617	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2525	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2618	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2526	}	2619	}
2527		2620
2528	void inline_size	2621	inline_size void
2529	infy_init (EV_P)	2622	check_2625 (EV_P)
2530	{	2623	{
2531	if (fs_fd != -2)
2532	return;
2533
2534	/* kernels < 2.6.25 are borked	2624	/* kernels < 2.6.25 are borked
2535	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html	2625	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2536	*/	2626	*/
2537	{
2538	struct utsname buf;	2627	struct utsname buf;
2539	int major, minor, micro;	2628	int major, minor, micro;
2540		2629
2541	fs_fd = -1;
2542
2543	if (uname (&buf))	2630	if (uname (&buf))
2544	return;	2631	return;
2545		2632
2546	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)	2633	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2547	return;	2634	return;
2548		2635
2549	if (major < 2	2636	if (major < 2
2550	\|\| (major == 2 && minor < 6)	2637	\|\| (major == 2 && minor < 6)
2551	\|\| (major == 2 && minor == 6 && micro < 25))	2638	\|\| (major == 2 && minor == 6 && micro < 25))
2552	return;	2639	return;
2553	}	2640
		2641	fs_2625 = 1;
		2642	}
		2643
		2644	inline_size void
		2645	infy_init (EV_P)
		2646	{
		2647	if (fs_fd != -2)
		2648	return;
		2649
		2650	fs_fd = -1;
		2651
		2652	check_2625 (EV_A);
2554		2653
2555	fs_fd = inotify_init ();	2654	fs_fd = inotify_init ();
2556		2655
2557	if (fs_fd >= 0)	2656	if (fs_fd >= 0)
2558	{	2657	{
…		…
2560	ev_set_priority (&fs_w, EV_MAXPRI);	2659	ev_set_priority (&fs_w, EV_MAXPRI);
2561	ev_io_start (EV_A_ &fs_w);	2660	ev_io_start (EV_A_ &fs_w);
2562	}	2661	}
2563	}	2662	}
2564		2663
2565	void inline_size	2664	inline_size void
2566	infy_fork (EV_P)	2665	infy_fork (EV_P)
2567	{	2666	{
2568	int slot;	2667	int slot;
2569		2668
2570	if (fs_fd < 0)	2669	if (fs_fd < 0)
…		…
2586	w->wd = -1;	2685	w->wd = -1;
2587		2686
2588	if (fs_fd >= 0)	2687	if (fs_fd >= 0)
2589	infy_add (EV_A_ w); /* re-add, no matter what */	2688	infy_add (EV_A_ w); /* re-add, no matter what */
2590	else	2689	else
2591	ev_timer_start (EV_A_ &w->timer);	2690	ev_timer_again (EV_A_ &w->timer);
2592	}	2691	}
2593	}	2692	}
2594	}	2693	}
2595		2694
2596	#endif	2695	#endif
…		…
2651	ev_stat_start (EV_P_ ev_stat *w)	2750	ev_stat_start (EV_P_ ev_stat *w)
2652	{	2751	{
2653	if (expect_false (ev_is_active (w)))	2752	if (expect_false (ev_is_active (w)))
2654	return;	2753	return;
2655		2754
2656	/* since we use memcmp, we need to clear any padding data etc. */
2657	memset (&w->prev, 0, sizeof (ev_statdata));
2658	memset (&w->attr, 0, sizeof (ev_statdata));
2659
2660	ev_stat_stat (EV_A_ w);	2755	ev_stat_stat (EV_A_ w);
2661		2756
		2757	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2662	if (w->interval < MIN_STAT_INTERVAL)	2758	w->interval = MIN_STAT_INTERVAL;
2663	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2664		2759
2665	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2760	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2666	ev_set_priority (&w->timer, ev_priority (w));	2761	ev_set_priority (&w->timer, ev_priority (w));
2667		2762
2668	#if EV_USE_INOTIFY	2763	#if EV_USE_INOTIFY
2669	infy_init (EV_A);	2764	infy_init (EV_A);
2670		2765
2671	if (fs_fd >= 0)	2766	if (fs_fd >= 0)
2672	infy_add (EV_A_ w);	2767	infy_add (EV_A_ w);
2673	else	2768	else
2674	#endif	2769	#endif
2675	ev_timer_start (EV_A_ &w->timer);	2770	ev_timer_again (EV_A_ &w->timer);
2676		2771
2677	ev_start (EV_A_ (W)w, 1);	2772	ev_start (EV_A_ (W)w, 1);
2678		2773
2679	EV_FREQUENT_CHECK;	2774	EV_FREQUENT_CHECK;
2680	}	2775	}
…		…
2855	static void	2950	static void
2856	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)	2951	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2857	{	2952	{
2858	ev_embed w = (ev_embed )(((char *)fork_w) - offsetof (ev_embed, fork));	2953	ev_embed w = (ev_embed )(((char *)fork_w) - offsetof (ev_embed, fork));
2859		2954
		2955	ev_embed_stop (EV_A_ w);
		2956
2860	{	2957	{
2861	struct ev_loop *loop = w->other;	2958	struct ev_loop *loop = w->other;
2862		2959
2863	ev_loop_fork (EV_A);	2960	ev_loop_fork (EV_A);
		2961	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2864	}	2962	}
		2963
		2964	ev_embed_start (EV_A_ w);
2865	}	2965	}
2866		2966
2867	#if 0	2967	#if 0
2868	static void	2968	static void
2869	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	2969	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
…		…
2878	if (expect_false (ev_is_active (w)))	2978	if (expect_false (ev_is_active (w)))
2879	return;	2979	return;
2880		2980
2881	{	2981	{
2882	struct ev_loop *loop = w->other;	2982	struct ev_loop *loop = w->other;
2883	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2983	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2884	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	2984	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2885	}	2985	}
2886		2986
2887	EV_FREQUENT_CHECK;	2987	EV_FREQUENT_CHECK;
2888		2988
…		…
3071	ev_timer_set (&once->to, timeout, 0.);	3171	ev_timer_set (&once->to, timeout, 0.);
3072	ev_timer_start (EV_A_ &once->to);	3172	ev_timer_start (EV_A_ &once->to);
3073	}	3173	}
3074	}	3174	}
3075		3175
		3176	/*****************************************************************************/
		3177
		3178	#if 0
		3179	void
		3180	ev_walk (EV_P_ int types, void (cb)(EV_P_ int type, void w))
		3181	{
		3182	int i, j;
		3183	ev_watcher_list wl, wn;
		3184
		3185	if (types & (EV_IO \| EV_EMBED))
		3186	for (i = 0; i < anfdmax; ++i)
		3187	for (wl = anfds [i].head; wl; )
		3188	{
		3189	wn = wl->next;
		3190
		3191	#if EV_EMBED_ENABLE
		3192	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3193	{
		3194	if (types & EV_EMBED)
		3195	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3196	}
		3197	else
		3198	#endif
		3199	#if EV_USE_INOTIFY
		3200	if (ev_cb ((ev_io *)wl) == infy_cb)
		3201	;
		3202	else
		3203	#endif
		3204	if ((ev_io *)wl != &pipeev)
		3205	if (types & EV_IO)
		3206	cb (EV_A_ EV_IO, wl);
		3207
		3208	wl = wn;
		3209	}
		3210
		3211	if (types & (EV_TIMER \| EV_STAT))
		3212	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3213	#if EV_STAT_ENABLE
		3214	/TODO: timer is not always active/
		3215	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3216	{
		3217	if (types & EV_STAT)
		3218	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3219	}
		3220	else
		3221	#endif
		3222	if (types & EV_TIMER)
		3223	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3224
		3225	#if EV_PERIODIC_ENABLE
		3226	if (types & EV_PERIODIC)
		3227	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3228	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3229	#endif
		3230
		3231	#if EV_IDLE_ENABLE
		3232	if (types & EV_IDLE)
		3233	for (j = NUMPRI; i--; )
		3234	for (i = idlecnt [j]; i--; )
		3235	cb (EV_A_ EV_IDLE, idles [j][i]);
		3236	#endif
		3237
		3238	#if EV_FORK_ENABLE
		3239	if (types & EV_FORK)
		3240	for (i = forkcnt; i--; )
		3241	if (ev_cb (forks [i]) != embed_fork_cb)
		3242	cb (EV_A_ EV_FORK, forks [i]);
		3243	#endif
		3244
		3245	#if EV_ASYNC_ENABLE
		3246	if (types & EV_ASYNC)
		3247	for (i = asynccnt; i--; )
		3248	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3249	#endif
		3250
		3251	if (types & EV_PREPARE)
		3252	for (i = preparecnt; i--; )
		3253	#if EV_EMBED_ENABLE
		3254	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3255	#endif
		3256	cb (EV_A_ EV_PREPARE, prepares [i]);
		3257
		3258	if (types & EV_CHECK)
		3259	for (i = checkcnt; i--; )
		3260	cb (EV_A_ EV_CHECK, checks [i]);
		3261
		3262	if (types & EV_SIGNAL)
		3263	for (i = 0; i < signalmax; ++i)
		3264	for (wl = signals [i].head; wl; )
		3265	{
		3266	wn = wl->next;
		3267	cb (EV_A_ EV_SIGNAL, wl);
		3268	wl = wn;
		3269	}
		3270
		3271	if (types & EV_CHILD)
		3272	for (i = EV_PID_HASHSIZE; i--; )
		3273	for (wl = childs [i]; wl; )
		3274	{
		3275	wn = wl->next;
		3276	cb (EV_A_ EV_CHILD, wl);
		3277	wl = wn;
		3278	}
		3279	/* EV_STAT 0x00001000 /* stat data changed */
		3280	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3281	}
		3282	#endif
		3283
3076	#if EV_MULTIPLICITY	3284	#if EV_MULTIPLICITY
3077	#include "ev_wrap.h"	3285	#include "ev_wrap.h"
3078	#endif	3286	#endif
3079		3287
3080	#ifdef __cplusplus	3288	#ifdef __cplusplus

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Comparing libev/ev.c (file contents): Revision 1.271 by root, Mon Nov 3 12:13:15 2008 UTC vs. Revision 1.284 by root, Wed Apr 15 17:49:26 2009 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.271 by root, Mon Nov 3 12:13:15 2008 UTC vs.
Revision 1.284 by root, Wed Apr 15 17:49:26 2009 UTC