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

Comparing libev/ev.c (file contents):
Revision 1.252 by root, Thu May 22 03:43:32 2008 UTC vs.
Revision 1.283 by root, Wed Apr 15 09:51:19 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
…		…
154	#ifndef _WIN32	166	#ifndef _WIN32
155	# include <sys/time.h>	167	# include <sys/time.h>
156	# include <sys/wait.h>	168	# include <sys/wait.h>
157	# include <unistd.h>	169	# include <unistd.h>
158	#else	170	#else
		171	# include <io.h>
159	# define WIN32_LEAN_AND_MEAN	172	# define WIN32_LEAN_AND_MEAN
160	# include <windows.h>	173	# include <windows.h>
161	# ifndef EV_SELECT_IS_WINSOCKET	174	# ifndef EV_SELECT_IS_WINSOCKET
162	# define EV_SELECT_IS_WINSOCKET 1	175	# define EV_SELECT_IS_WINSOCKET 1
163	# endif	176	# endif
164	#endif	177	#endif
165		178
166	/* this block tries to deduce configuration from header-defined symbols and defaults */	179	/* this block tries to deduce configuration from header-defined symbols and defaults */
167		180
		181	#ifndef EV_USE_CLOCK_SYSCALL
		182	# if __linux && __GLIBC__ >= 2
		183	# define EV_USE_CLOCK_SYSCALL 1
		184	# else
		185	# define EV_USE_CLOCK_SYSCALL 0
		186	# endif
		187	#endif
		188
168	#ifndef EV_USE_MONOTONIC	189	#ifndef EV_USE_MONOTONIC
		190	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
		191	# define EV_USE_MONOTONIC 1
		192	# else
169	# define EV_USE_MONOTONIC 0	193	# define EV_USE_MONOTONIC 0
		194	# endif
170	#endif	195	#endif
171		196
172	#ifndef EV_USE_REALTIME	197	#ifndef EV_USE_REALTIME
173	# define EV_USE_REALTIME 0	198	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174	#endif	199	#endif
175		200
176	#ifndef EV_USE_NANOSLEEP	201	#ifndef EV_USE_NANOSLEEP
		202	# if _POSIX_C_SOURCE >= 199309L
		203	# define EV_USE_NANOSLEEP 1
		204	# else
177	# define EV_USE_NANOSLEEP 0	205	# define EV_USE_NANOSLEEP 0
		206	# endif
178	#endif	207	#endif
179		208
180	#ifndef EV_USE_SELECT	209	#ifndef EV_USE_SELECT
181	# define EV_USE_SELECT 1	210	# define EV_USE_SELECT 1
182	#endif	211	#endif
…		…
277	# include <sys/select.h>	306	# include <sys/select.h>
278	# endif	307	# endif
279	#endif	308	#endif
280		309
281	#if EV_USE_INOTIFY	310	#if EV_USE_INOTIFY
		311	# include <sys/utsname.h>
		312	# include <sys/statfs.h>
282	# 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
283	#endif	319	#endif
284		320
285	#if EV_SELECT_IS_WINSOCKET	321	#if EV_SELECT_IS_WINSOCKET
286	# 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
287	#endif	332	#endif
288		333
289	#if EV_USE_EVENTFD	334	#if EV_USE_EVENTFD
290	/* 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 */
291	# include <stdint.h>	336	# include <stdint.h>
…		…
352	typedef ev_watcher_time *WT;	397	typedef ev_watcher_time *WT;
353		398
354	#define ev_active(w) ((W)(w))->active	399	#define ev_active(w) ((W)(w))->active
355	#define ev_at(w) ((WT)(w))->at	400	#define ev_at(w) ((WT)(w))->at
356		401
357	#if EV_USE_MONOTONIC	402	#if EV_USE_REALTIME
358	/* 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 */
359	/* 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
360	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? */
361	#endif	410	#endif
362		411
363	#ifdef _WIN32	412	#ifdef _WIN32
364	# include "ev_win32.c"	413	# include "ev_win32.c"
…		…
373	{	422	{
374	syserr_cb = cb;	423	syserr_cb = cb;
375	}	424	}
376		425
377	static void noinline	426	static void noinline
378	syserr (const char *msg)	427	ev_syserr (const char *msg)
379	{	428	{
380	if (!msg)	429	if (!msg)
381	msg = "(libev) system error";	430	msg = "(libev) system error";
382		431
383	if (syserr_cb)	432	if (syserr_cb)
…		…
434	typedef struct	483	typedef struct
435	{	484	{
436	WL head;	485	WL head;
437	unsigned char events;	486	unsigned char events;
438	unsigned char reify;	487	unsigned char reify;
		488	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
		489	unsigned char unused;
		490	#if EV_USE_EPOLL
		491	unsigned int egen; /* generation counter to counter epoll bugs */
		492	#endif
439	#if EV_SELECT_IS_WINSOCKET	493	#if EV_SELECT_IS_WINSOCKET
440	SOCKET handle;	494	SOCKET handle;
441	#endif	495	#endif
442	} ANFD;	496	} ANFD;
443		497
…		…
503		557
504	ev_tstamp	558	ev_tstamp
505	ev_time (void)	559	ev_time (void)
506	{	560	{
507	#if EV_USE_REALTIME	561	#if EV_USE_REALTIME
		562	if (expect_true (have_realtime))
		563	{
508	struct timespec ts;	564	struct timespec ts;
509	clock_gettime (CLOCK_REALTIME, &ts);	565	clock_gettime (CLOCK_REALTIME, &ts);
510	return ts.tv_sec + ts.tv_nsec * 1e-9;	566	return ts.tv_sec + ts.tv_nsec * 1e-9;
511	#else	567	}
		568	#endif
		569
512	struct timeval tv;	570	struct timeval tv;
513	gettimeofday (&tv, 0);	571	gettimeofday (&tv, 0);
514	return tv.tv_sec + tv.tv_usec * 1e-6;	572	return tv.tv_sec + tv.tv_usec * 1e-6;
515	#endif
516	}	573	}
517		574
518	ev_tstamp inline_size	575	ev_tstamp inline_size
519	get_clock (void)	576	get_clock (void)
520	{	577	{
…		…
556	struct timeval tv;	613	struct timeval tv;
557		614
558	tv.tv_sec = (time_t)delay;	615	tv.tv_sec = (time_t)delay;
559	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	616	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
560		617
		618	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		619	/* somehting nto guaranteed by newer posix versions, but guaranteed */
		620	/* by older ones */
561	select (0, 0, 0, 0, &tv);	621	select (0, 0, 0, 0, &tv);
562	#endif	622	#endif
563	}	623	}
564	}	624	}
565		625
…		…
592	array_realloc (int elem, void base, int cur, int cnt)	652	array_realloc (int elem, void base, int cur, int cnt)
593	{	653	{
594	cur = array_nextsize (elem, cur, cnt);	654	cur = array_nextsize (elem, cur, cnt);
595	return ev_realloc (base, elem * *cur);	655	return ev_realloc (base, elem * *cur);
596	}	656	}
		657
		658	#define array_init_zero(base,count) \
		659	memset ((void )(base), 0, sizeof ((base)) * (count))
597		660
598	#define array_needsize(type,base,cur,cnt,init) \	661	#define array_needsize(type,base,cur,cnt,init) \
599	if (expect_false ((cnt) > (cur))) \	662	if (expect_false ((cnt) > (cur))) \
600	{ \	663	{ \
601	int ocur_ = (cur); \	664	int ocur_ = (cur); \
…		…
613	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	676	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
614	}	677	}
615	#endif	678	#endif
616		679
617	#define array_free(stem, idx) \	680	#define array_free(stem, idx) \
618	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
619		682
620	/*****************************************************************************/	683	/*****************************************************************************/
621		684
622	void noinline	685	void noinline
623	ev_feed_event (EV_P_ void *w, int revents)	686	ev_feed_event (EV_P_ void *w, int revents)
…		…
645	ev_feed_event (EV_A_ events [i], type);	708	ev_feed_event (EV_A_ events [i], type);
646	}	709	}
647		710
648	/*****************************************************************************/	711	/*****************************************************************************/
649		712
650	void inline_size
651	anfds_init (ANFD *base, int count)
652	{
653	while (count--)
654	{
655	base->head = 0;
656	base->events = EV_NONE;
657	base->reify = 0;
658
659	++base;
660	}
661	}
662
663	void inline_speed	713	void inline_speed
664	fd_event (EV_P_ int fd, int revents)	714	fd_event (EV_P_ int fd, int revents)
665	{	715	{
666	ANFD *anfd = anfds + fd;	716	ANFD *anfd = anfds + fd;
667	ev_io *w;	717	ev_io *w;
…		…
699	events \|= (unsigned char)w->events;	749	events \|= (unsigned char)w->events;
700		750
701	#if EV_SELECT_IS_WINSOCKET	751	#if EV_SELECT_IS_WINSOCKET
702	if (events)	752	if (events)
703	{	753	{
704	unsigned long argp;	754	unsigned long arg;
705	#ifdef EV_FD_TO_WIN32_HANDLE	755	#ifdef EV_FD_TO_WIN32_HANDLE
706	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	756	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
707	#else	757	#else
708	anfd->handle = _get_osfhandle (fd);	758	anfd->handle = _get_osfhandle (fd);
709	#endif	759	#endif
710	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	760	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
711	}	761	}
712	#endif	762	#endif
713		763
714	{	764	{
715	unsigned char o_events = anfd->events;	765	unsigned char o_events = anfd->events;
716	unsigned char o_reify = anfd->reify;	766	unsigned char o_reify = anfd->reify;
717		767
718	anfd->reify = 0;	768	anfd->reify = 0;
719	anfd->events = events;	769	anfd->events = events;
720		770
721	if (o_events != events \|\| o_reify & EV_IOFDSET)	771	if (o_events != events \|\| o_reify & EV__IOFDSET)
722	backend_modify (EV_A_ fd, o_events, events);	772	backend_modify (EV_A_ fd, o_events, events);
723	}	773	}
724	}	774	}
725		775
726	fdchangecnt = 0;	776	fdchangecnt = 0;
…		…
768	{	818	{
769	int fd;	819	int fd;
770		820
771	for (fd = 0; fd < anfdmax; ++fd)	821	for (fd = 0; fd < anfdmax; ++fd)
772	if (anfds [fd].events)	822	if (anfds [fd].events)
773	if (!fd_valid (fd) == -1 && errno == EBADF)	823	if (!fd_valid (fd) && errno == EBADF)
774	fd_kill (EV_A_ fd);	824	fd_kill (EV_A_ fd);
775	}	825	}
776		826
777	/* called on ENOMEM in select/poll to kill some fds and retry */	827	/* called on ENOMEM in select/poll to kill some fds and retry */
778	static void noinline	828	static void noinline
…		…
796		846
797	for (fd = 0; fd < anfdmax; ++fd)	847	for (fd = 0; fd < anfdmax; ++fd)
798	if (anfds [fd].events)	848	if (anfds [fd].events)
799	{	849	{
800	anfds [fd].events = 0;	850	anfds [fd].events = 0;
		851	anfds [fd].emask = 0;
801	fd_change (EV_A_ fd, EV_IOFDSET \| 1);	852	fd_change (EV_A_ fd, EV__IOFDSET \| 1);
802	}	853	}
803	}	854	}
804		855
805	/*****************************************************************************/	856	/*****************************************************************************/
806		857
…		…
957	static ANSIG *signals;	1008	static ANSIG *signals;
958	static int signalmax;	1009	static int signalmax;
959		1010
960	static EV_ATOMIC_T gotsig;	1011	static EV_ATOMIC_T gotsig;
961		1012
962	void inline_size
963	signals_init (ANSIG *base, int count)
964	{
965	while (count--)
966	{
967	base->head = 0;
968	base->gotsig = 0;
969
970	++base;
971	}
972	}
973
974	/*****************************************************************************/	1013	/*****************************************************************************/
975		1014
976	void inline_speed	1015	void inline_speed
977	fd_intern (int fd)	1016	fd_intern (int fd)
978	{	1017	{
979	#ifdef _WIN32	1018	#ifdef _WIN32
980	int arg = 1;	1019	unsigned long arg = 1;
981	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1020	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
982	#else	1021	#else
983	fcntl (fd, F_SETFD, FD_CLOEXEC);	1022	fcntl (fd, F_SETFD, FD_CLOEXEC);
984	fcntl (fd, F_SETFL, O_NONBLOCK);	1023	fcntl (fd, F_SETFL, O_NONBLOCK);
985	#endif	1024	#endif
…		…
999	}	1038	}
1000	else	1039	else
1001	#endif	1040	#endif
1002	{	1041	{
1003	while (pipe (evpipe))	1042	while (pipe (evpipe))
1004	syserr ("(libev) error creating signal/async pipe");	1043	ev_syserr ("(libev) error creating signal/async pipe");
1005		1044
1006	fd_intern (evpipe [0]);	1045	fd_intern (evpipe [0]);
1007	fd_intern (evpipe [1]);	1046	fd_intern (evpipe [1]);
1008	ev_io_set (&pipeev, evpipe [0], EV_READ);	1047	ev_io_set (&pipeev, evpipe [0], EV_READ);
1009	}	1048	}
…		…
1099	ev_feed_signal_event (EV_P_ int signum)	1138	ev_feed_signal_event (EV_P_ int signum)
1100	{	1139	{
1101	WL w;	1140	WL w;
1102		1141
1103	#if EV_MULTIPLICITY	1142	#if EV_MULTIPLICITY
1104	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1143	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1105	#endif	1144	#endif
1106		1145
1107	--signum;	1146	--signum;
1108		1147
1109	if (signum < 0 \|\| signum >= signalmax)	1148	if (signum < 0 \|\| signum >= signalmax)
…		…
1238	/* kqueue is borked on everything but netbsd apparently */	1277	/* kqueue is borked on everything but netbsd apparently */
1239	/* it usually doesn't work correctly on anything but sockets and pipes */	1278	/* it usually doesn't work correctly on anything but sockets and pipes */
1240	flags &= ~EVBACKEND_KQUEUE;	1279	flags &= ~EVBACKEND_KQUEUE;
1241	#endif	1280	#endif
1242	#ifdef __APPLE__	1281	#ifdef __APPLE__
1243	// flags &= ~EVBACKEND_KQUEUE; for documentation	1282	/* only select works correctly on that "unix-certified" platform */
1244	flags &= ~EVBACKEND_POLL;	1283	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1284	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1245	#endif	1285	#endif
1246		1286
1247	return flags;	1287	return flags;
1248	}	1288	}
1249		1289
…		…
1286	static void noinline	1326	static void noinline
1287	loop_init (EV_P_ unsigned int flags)	1327	loop_init (EV_P_ unsigned int flags)
1288	{	1328	{
1289	if (!backend)	1329	if (!backend)
1290	{	1330	{
		1331	#if EV_USE_REALTIME
		1332	if (!have_realtime)
		1333	{
		1334	struct timespec ts;
		1335
		1336	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1337	have_realtime = 1;
		1338	}
		1339	#endif
		1340
1291	#if EV_USE_MONOTONIC	1341	#if EV_USE_MONOTONIC
		1342	if (!have_monotonic)
1292	{	1343	{
1293	struct timespec ts;	1344	struct timespec ts;
		1345
1294	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1346	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1295	have_monotonic = 1;	1347	have_monotonic = 1;
1296	}	1348	}
1297	#endif	1349	#endif
1298		1350
1299	ev_rt_now = ev_time ();	1351	ev_rt_now = ev_time ();
1300	mn_now = get_clock ();	1352	mn_now = get_clock ();
1301	now_floor = mn_now;	1353	now_floor = mn_now;
…		…
1499	{	1551	{
1500	postfork = 1; /* must be in line with ev_default_fork */	1552	postfork = 1; /* must be in line with ev_default_fork */
1501	}	1553	}
1502		1554
1503	#if EV_VERIFY	1555	#if EV_VERIFY
1504	void noinline	1556	static void noinline
1505	verify_watcher (EV_P_ W w)	1557	verify_watcher (EV_P_ W w)
1506	{	1558	{
1507	assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));	1559	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1508		1560
1509	if (w->pending)	1561	if (w->pending)
1510	assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));	1562	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1511	}	1563	}
1512		1564
1513	static void noinline	1565	static void noinline
1514	verify_heap (EV_P_ ANHE *heap, int N)	1566	verify_heap (EV_P_ ANHE *heap, int N)
1515	{	1567	{
1516	int i;	1568	int i;
1517		1569
1518	for (i = HEAP0; i < N + HEAP0; ++i)	1570	for (i = HEAP0; i < N + HEAP0; ++i)
1519	{	1571	{
1520	assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));	1572	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1521	assert (("heap condition violated", i == HEAP0 \|\| ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));	1573	assert (("libev: heap condition violated", i == HEAP0 \|\| ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1522	assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));	1574	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1523		1575
1524	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));	1576	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1525	}	1577	}
1526	}	1578	}
1527		1579
1528	static void noinline	1580	static void noinline
1529	array_verify (EV_P_ W *ws, int cnt)	1581	array_verify (EV_P_ W *ws, int cnt)
1530	{	1582	{
1531	while (cnt--)	1583	while (cnt--)
1532	{	1584	{
1533	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));	1585	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1534	verify_watcher (EV_A_ ws [cnt]);	1586	verify_watcher (EV_A_ ws [cnt]);
1535	}	1587	}
1536	}	1588	}
1537	#endif	1589	#endif
1538		1590
…		…
1545		1597
1546	assert (activecnt >= -1);	1598	assert (activecnt >= -1);
1547		1599
1548	assert (fdchangemax >= fdchangecnt);	1600	assert (fdchangemax >= fdchangecnt);
1549	for (i = 0; i < fdchangecnt; ++i)	1601	for (i = 0; i < fdchangecnt; ++i)
1550	assert (("negative fd in fdchanges", fdchanges [i] >= 0));	1602	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1551		1603
1552	assert (anfdmax >= 0);	1604	assert (anfdmax >= 0);
1553	for (i = 0; i < anfdmax; ++i)	1605	for (i = 0; i < anfdmax; ++i)
1554	for (w = anfds [i].head; w; w = w->next)	1606	for (w = anfds [i].head; w; w = w->next)
1555	{	1607	{
1556	verify_watcher (EV_A_ (W)w);	1608	verify_watcher (EV_A_ (W)w);
1557	assert (("inactive fd watcher on anfd list", ev_active (w) == 1));	1609	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1558	assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));	1610	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1559	}	1611	}
1560		1612
1561	assert (timermax >= timercnt);	1613	assert (timermax >= timercnt);
1562	verify_heap (EV_A_ timers, timercnt);	1614	verify_heap (EV_A_ timers, timercnt);
1563		1615
…		…
1640	{	1692	{
1641	#if EV_MULTIPLICITY	1693	#if EV_MULTIPLICITY
1642	struct ev_loop *loop = ev_default_loop_ptr;	1694	struct ev_loop *loop = ev_default_loop_ptr;
1643	#endif	1695	#endif
1644		1696
		1697	ev_default_loop_ptr = 0;
		1698
1645	#ifndef _WIN32	1699	#ifndef _WIN32
1646	ev_ref (EV_A); /* child watcher */	1700	ev_ref (EV_A); /* child watcher */
1647	ev_signal_stop (EV_A_ &childev);	1701	ev_signal_stop (EV_A_ &childev);
1648	#endif	1702	#endif
1649		1703
…		…
1655	{	1709	{
1656	#if EV_MULTIPLICITY	1710	#if EV_MULTIPLICITY
1657	struct ev_loop *loop = ev_default_loop_ptr;	1711	struct ev_loop *loop = ev_default_loop_ptr;
1658	#endif	1712	#endif
1659		1713
1660	if (backend)
1661	postfork = 1; /* must be in line with ev_loop_fork */	1714	postfork = 1; /* must be in line with ev_loop_fork */
1662	}	1715	}
1663		1716
1664	/*****************************************************************************/	1717	/*****************************************************************************/
1665		1718
1666	void	1719	void
…		…
1679	{	1732	{
1680	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1733	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1681		1734
1682	if (expect_true (p->w))	1735	if (expect_true (p->w))
1683	{	1736	{
1684	/assert (("non-pending watcher on pending list", p->w->pending));/	1737	/assert (("libev: non-pending watcher on pending list", p->w->pending));/
1685		1738
1686	p->w->pending = 0;	1739	p->w->pending = 0;
1687	EV_CB_INVOKE (p->w, p->events);	1740	EV_CB_INVOKE (p->w, p->events);
1688	EV_FREQUENT_CHECK;	1741	EV_FREQUENT_CHECK;
1689	}	1742	}
…		…
1720		1773
1721	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	1774	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1722	{	1775	{
1723	ev_timer w = (ev_timer )ANHE_w (timers [HEAP0]);	1776	ev_timer w = (ev_timer )ANHE_w (timers [HEAP0]);
1724		1777
1725	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/	1778	/assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));/
1726		1779
1727	/* first reschedule or stop timer */	1780	/* first reschedule or stop timer */
1728	if (w->repeat)	1781	if (w->repeat)
1729	{	1782	{
1730	ev_at (w) += w->repeat;	1783	ev_at (w) += w->repeat;
1731	if (ev_at (w) < mn_now)	1784	if (ev_at (w) < mn_now)
1732	ev_at (w) = mn_now;	1785	ev_at (w) = mn_now;
1733		1786
1734	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1787	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1735		1788
1736	ANHE_at_cache (timers [HEAP0]);	1789	ANHE_at_cache (timers [HEAP0]);
1737	downheap (timers, timercnt, HEAP0);	1790	downheap (timers, timercnt, HEAP0);
1738	}	1791	}
1739	else	1792	else
…		…
1752		1805
1753	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	1806	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1754	{	1807	{
1755	ev_periodic w = (ev_periodic )ANHE_w (periodics [HEAP0]);	1808	ev_periodic w = (ev_periodic )ANHE_w (periodics [HEAP0]);
1756		1809
1757	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/	1810	/assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));/
1758		1811
1759	/* first reschedule or stop timer */	1812	/* first reschedule or stop timer */
1760	if (w->reschedule_cb)	1813	if (w->reschedule_cb)
1761	{	1814	{
1762	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1815	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1763		1816
1764	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));	1817	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1765		1818
1766	ANHE_at_cache (periodics [HEAP0]);	1819	ANHE_at_cache (periodics [HEAP0]);
1767	downheap (periodics, periodiccnt, HEAP0);	1820	downheap (periodics, periodiccnt, HEAP0);
1768	}	1821	}
1769	else if (w->interval)	1822	else if (w->interval)
…		…
1897	ev_unref (EV_P)	1950	ev_unref (EV_P)
1898	{	1951	{
1899	--activecnt;	1952	--activecnt;
1900	}	1953	}
1901		1954
		1955	void
		1956	ev_now_update (EV_P)
		1957	{
		1958	time_update (EV_A_ 1e100);
		1959	}
		1960
1902	static int loop_done;	1961	static int loop_done;
1903		1962
1904	void	1963	void
1905	ev_loop (EV_P_ int flags)	1964	ev_loop (EV_P_ int flags)
1906	{	1965	{
…		…
1938	{	1997	{
1939	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1998	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1940	call_pending (EV_A);	1999	call_pending (EV_A);
1941	}	2000	}
1942		2001
1943	if (expect_false (!activecnt))
1944	break;
1945
1946	/* we might have forked, so reify kernel state if necessary */	2002	/* we might have forked, so reify kernel state if necessary */
1947	if (expect_false (postfork))	2003	if (expect_false (postfork))
1948	loop_fork (EV_A);	2004	loop_fork (EV_A);
1949		2005
1950	/* update fd-related kernel structures */	2006	/* update fd-related kernel structures */
…		…
2114	int fd = w->fd;	2170	int fd = w->fd;
2115		2171
2116	if (expect_false (ev_is_active (w)))	2172	if (expect_false (ev_is_active (w)))
2117	return;	2173	return;
2118		2174
2119	assert (("ev_io_start called with negative fd", fd >= 0));	2175	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2176	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET \| EV_READ \| EV_WRITE))));
2120		2177
2121	EV_FREQUENT_CHECK;	2178	EV_FREQUENT_CHECK;
2122		2179
2123	ev_start (EV_A_ (W)w, 1);	2180	ev_start (EV_A_ (W)w, 1);
2124	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2181	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2125	wlist_add (&anfds[fd].head, (WL)w);	2182	wlist_add (&anfds[fd].head, (WL)w);
2126		2183
2127	fd_change (EV_A_ fd, w->events & EV_IOFDSET \| 1);	2184	fd_change (EV_A_ fd, w->events & EV__IOFDSET \| 1);
2128	w->events &= ~EV_IOFDSET;	2185	w->events &= ~EV__IOFDSET;
2129		2186
2130	EV_FREQUENT_CHECK;	2187	EV_FREQUENT_CHECK;
2131	}	2188	}
2132		2189
2133	void noinline	2190	void noinline
…		…
2135	{	2192	{
2136	clear_pending (EV_A_ (W)w);	2193	clear_pending (EV_A_ (W)w);
2137	if (expect_false (!ev_is_active (w)))	2194	if (expect_false (!ev_is_active (w)))
2138	return;	2195	return;
2139		2196
2140	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2197	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2141		2198
2142	EV_FREQUENT_CHECK;	2199	EV_FREQUENT_CHECK;
2143		2200
2144	wlist_del (&anfds[w->fd].head, (WL)w);	2201	wlist_del (&anfds[w->fd].head, (WL)w);
2145	ev_stop (EV_A_ (W)w);	2202	ev_stop (EV_A_ (W)w);
…		…
2155	if (expect_false (ev_is_active (w)))	2212	if (expect_false (ev_is_active (w)))
2156	return;	2213	return;
2157		2214
2158	ev_at (w) += mn_now;	2215	ev_at (w) += mn_now;
2159		2216
2160	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2217	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2161		2218
2162	EV_FREQUENT_CHECK;	2219	EV_FREQUENT_CHECK;
2163		2220
2164	++timercnt;	2221	++timercnt;
2165	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);	2222	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
…		…
2168	ANHE_at_cache (timers [ev_active (w)]);	2225	ANHE_at_cache (timers [ev_active (w)]);
2169	upheap (timers, ev_active (w));	2226	upheap (timers, ev_active (w));
2170		2227
2171	EV_FREQUENT_CHECK;	2228	EV_FREQUENT_CHECK;
2172		2229
2173	/assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));/	2230	/assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));/
2174	}	2231	}
2175		2232
2176	void noinline	2233	void noinline
2177	ev_timer_stop (EV_P_ ev_timer *w)	2234	ev_timer_stop (EV_P_ ev_timer *w)
2178	{	2235	{
…		…
2183	EV_FREQUENT_CHECK;	2240	EV_FREQUENT_CHECK;
2184		2241
2185	{	2242	{
2186	int active = ev_active (w);	2243	int active = ev_active (w);
2187		2244
2188	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2245	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2189		2246
2190	--timercnt;	2247	--timercnt;
2191		2248
2192	if (expect_true (active < timercnt + HEAP0))	2249	if (expect_true (active < timercnt + HEAP0))
2193	{	2250	{
…		…
2237		2294
2238	if (w->reschedule_cb)	2295	if (w->reschedule_cb)
2239	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2296	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2240	else if (w->interval)	2297	else if (w->interval)
2241	{	2298	{
2242	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2299	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2243	/* this formula differs from the one in periodic_reify because we do not always round up */	2300	/* this formula differs from the one in periodic_reify because we do not always round up */
2244	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2301	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2245	}	2302	}
2246	else	2303	else
2247	ev_at (w) = w->offset;	2304	ev_at (w) = w->offset;
…		…
2255	ANHE_at_cache (periodics [ev_active (w)]);	2312	ANHE_at_cache (periodics [ev_active (w)]);
2256	upheap (periodics, ev_active (w));	2313	upheap (periodics, ev_active (w));
2257		2314
2258	EV_FREQUENT_CHECK;	2315	EV_FREQUENT_CHECK;
2259		2316
2260	/assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));/	2317	/assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));/
2261	}	2318	}
2262		2319
2263	void noinline	2320	void noinline
2264	ev_periodic_stop (EV_P_ ev_periodic *w)	2321	ev_periodic_stop (EV_P_ ev_periodic *w)
2265	{	2322	{
…		…
2270	EV_FREQUENT_CHECK;	2327	EV_FREQUENT_CHECK;
2271		2328
2272	{	2329	{
2273	int active = ev_active (w);	2330	int active = ev_active (w);
2274		2331
2275	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2332	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2276		2333
2277	--periodiccnt;	2334	--periodiccnt;
2278		2335
2279	if (expect_true (active < periodiccnt + HEAP0))	2336	if (expect_true (active < periodiccnt + HEAP0))
2280	{	2337	{
…		…
2303		2360
2304	void noinline	2361	void noinline
2305	ev_signal_start (EV_P_ ev_signal *w)	2362	ev_signal_start (EV_P_ ev_signal *w)
2306	{	2363	{
2307	#if EV_MULTIPLICITY	2364	#if EV_MULTIPLICITY
2308	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2365	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2309	#endif	2366	#endif
2310	if (expect_false (ev_is_active (w)))	2367	if (expect_false (ev_is_active (w)))
2311	return;	2368	return;
2312		2369
2313	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2370	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2314		2371
2315	evpipe_init (EV_A);	2372	evpipe_init (EV_A);
2316		2373
2317	EV_FREQUENT_CHECK;	2374	EV_FREQUENT_CHECK;
2318		2375
…		…
2321	sigset_t full, prev;	2378	sigset_t full, prev;
2322	sigfillset (&full);	2379	sigfillset (&full);
2323	sigprocmask (SIG_SETMASK, &full, &prev);	2380	sigprocmask (SIG_SETMASK, &full, &prev);
2324	#endif	2381	#endif
2325		2382
2326	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2383	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2327		2384
2328	#ifndef _WIN32	2385	#ifndef _WIN32
2329	sigprocmask (SIG_SETMASK, &prev, 0);	2386	sigprocmask (SIG_SETMASK, &prev, 0);
2330	#endif	2387	#endif
2331	}	2388	}
…		…
2369		2426
2370	void	2427	void
2371	ev_child_start (EV_P_ ev_child *w)	2428	ev_child_start (EV_P_ ev_child *w)
2372	{	2429	{
2373	#if EV_MULTIPLICITY	2430	#if EV_MULTIPLICITY
2374	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2431	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2375	#endif	2432	#endif
2376	if (expect_false (ev_is_active (w)))	2433	if (expect_false (ev_is_active (w)))
2377	return;	2434	return;
2378		2435
2379	EV_FREQUENT_CHECK;	2436	EV_FREQUENT_CHECK;
…		…
2404	# ifdef _WIN32	2461	# ifdef _WIN32
2405	# undef lstat	2462	# undef lstat
2406	# define lstat(a,b) _stati64 (a,b)	2463	# define lstat(a,b) _stati64 (a,b)
2407	# endif	2464	# endif
2408		2465
2409	#define DEF_STAT_INTERVAL 5.0074891	2466	#define DEF_STAT_INTERVAL 5.0074891
		2467	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2410	#define MIN_STAT_INTERVAL 0.1074891	2468	#define MIN_STAT_INTERVAL 0.1074891
2411		2469
2412	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2470	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2413		2471
2414	#if EV_USE_INOTIFY	2472	#if EV_USE_INOTIFY
2415	# define EV_INOTIFY_BUFSIZE 8192	2473	# define EV_INOTIFY_BUFSIZE 8192
…		…
2419	{	2477	{
2420	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);	2478	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);
2421		2479
2422	if (w->wd < 0)	2480	if (w->wd < 0)
2423	{	2481	{
		2482	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2424	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2483	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2425		2484
2426	/* monitor some parent directory for speedup hints */	2485	/* monitor some parent directory for speedup hints */
2427	/* note that exceeding the hardcoded limit is not a correctness issue, */	2486	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2428	/* but an efficiency issue only */	2487	/* but an efficiency issue only */
2429	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)	2488	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)
2430	{	2489	{
2431	char path [4096];	2490	char path [4096];
2432	strcpy (path, w->path);	2491	strcpy (path, w->path);
…		…
2436	int mask = IN_MASK_ADD \| IN_DELETE_SELF \| IN_MOVE_SELF	2495	int mask = IN_MASK_ADD \| IN_DELETE_SELF \| IN_MOVE_SELF
2437	\| (errno == EACCES ? IN_ATTRIB : IN_CREATE \| IN_MOVED_TO);	2496	\| (errno == EACCES ? IN_ATTRIB : IN_CREATE \| IN_MOVED_TO);
2438		2497
2439	char *pend = strrchr (path, '/');	2498	char *pend = strrchr (path, '/');
2440		2499
2441	if (!pend)	2500	if (!pend \|\| pend == path)
2442	break; /* whoops, no '/', complain to your admin */	2501	break;
2443		2502
2444	*pend = 0;	2503	*pend = 0;
2445	w->wd = inotify_add_watch (fs_fd, path, mask);	2504	w->wd = inotify_add_watch (fs_fd, path, mask);
2446	}	2505	}
2447	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));	2506	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));
2448	}	2507	}
2449	}	2508	}
2450	else
2451	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2452		2509
2453	if (w->wd >= 0)	2510	if (w->wd >= 0)
		2511	{
2454	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2512	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2513
		2514	/* now local changes will be tracked by inotify, but remote changes won't */
		2515	/* unless the filesystem it known to be local, we therefore still poll */
		2516	/* also do poll on <2.6.25, but with normal frequency */
		2517	struct statfs sfs;
		2518
		2519	if (fs_2625 && !statfs (w->path, &sfs))
		2520	if (sfs.f_type == 0x1373 /* devfs */
		2521	\|\| sfs.f_type == 0xEF53 /* ext2/3 */
		2522	\|\| sfs.f_type == 0x3153464a /* jfs */
		2523	\|\| sfs.f_type == 0x52654973 /* reiser3 */
		2524	\|\| sfs.f_type == 0x01021994 /* tempfs */
		2525	\|\| sfs.f_type == 0x58465342 /* xfs */)
		2526	return;
		2527
		2528	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2529	ev_timer_again (EV_A_ &w->timer);
		2530	}
2455	}	2531	}
2456		2532
2457	static void noinline	2533	static void noinline
2458	infy_del (EV_P_ ev_stat *w)	2534	infy_del (EV_P_ ev_stat *w)
2459	{	2535	{
…		…
2473		2549
2474	static void noinline	2550	static void noinline
2475	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2551	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2476	{	2552	{
2477	if (slot < 0)	2553	if (slot < 0)
2478	/* overflow, need to check for all hahs slots */	2554	/* overflow, need to check for all hash slots */
2479	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2555	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2480	infy_wd (EV_A_ slot, wd, ev);	2556	infy_wd (EV_A_ slot, wd, ev);
2481	else	2557	else
2482	{	2558	{
2483	WL w_;	2559	WL w_;
…		…
2489		2565
2490	if (w->wd == wd \|\| wd == -1)	2566	if (w->wd == wd \|\| wd == -1)
2491	{	2567	{
2492	if (ev->mask & (IN_IGNORED \| IN_UNMOUNT \| IN_DELETE_SELF))	2568	if (ev->mask & (IN_IGNORED \| IN_UNMOUNT \| IN_DELETE_SELF))
2493	{	2569	{
		2570	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2494	w->wd = -1;	2571	w->wd = -1;
2495	infy_add (EV_A_ w); /* re-add, no matter what */	2572	infy_add (EV_A_ w); /* re-add, no matter what */
2496	}	2573	}
2497		2574
2498	stat_timer_cb (EV_A_ &w->timer, 0);	2575	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2512	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2589	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2513	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2590	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2514	}	2591	}
2515		2592
2516	void inline_size	2593	void inline_size
		2594	check_2625 (EV_P)
		2595	{
		2596	/* kernels < 2.6.25 are borked
		2597	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2598	*/
		2599	struct utsname buf;
		2600	int major, minor, micro;
		2601
		2602	if (uname (&buf))
		2603	return;
		2604
		2605	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2606	return;
		2607
		2608	if (major < 2
		2609	\|\| (major == 2 && minor < 6)
		2610	\|\| (major == 2 && minor == 6 && micro < 25))
		2611	return;
		2612
		2613	fs_2625 = 1;
		2614	}
		2615
		2616	void inline_size
2517	infy_init (EV_P)	2617	infy_init (EV_P)
2518	{	2618	{
2519	if (fs_fd != -2)	2619	if (fs_fd != -2)
2520	return;	2620	return;
		2621
		2622	fs_fd = -1;
		2623
		2624	check_2625 (EV_A);
2521		2625
2522	fs_fd = inotify_init ();	2626	fs_fd = inotify_init ();
2523		2627
2524	if (fs_fd >= 0)	2628	if (fs_fd >= 0)
2525	{	2629	{
…		…
2553	w->wd = -1;	2657	w->wd = -1;
2554		2658
2555	if (fs_fd >= 0)	2659	if (fs_fd >= 0)
2556	infy_add (EV_A_ w); /* re-add, no matter what */	2660	infy_add (EV_A_ w); /* re-add, no matter what */
2557	else	2661	else
2558	ev_timer_start (EV_A_ &w->timer);	2662	ev_timer_again (EV_A_ &w->timer);
2559	}	2663	}
2560
2561	}	2664	}
2562	}	2665	}
2563		2666
		2667	#endif
		2668
		2669	#ifdef _WIN32
		2670	# define EV_LSTAT(p,b) _stati64 (p, b)
		2671	#else
		2672	# define EV_LSTAT(p,b) lstat (p, b)
2564	#endif	2673	#endif
2565		2674
2566	void	2675	void
2567	ev_stat_stat (EV_P_ ev_stat *w)	2676	ev_stat_stat (EV_P_ ev_stat *w)
2568	{	2677	{
…		…
2595	\|\| w->prev.st_atime != w->attr.st_atime	2704	\|\| w->prev.st_atime != w->attr.st_atime
2596	\|\| w->prev.st_mtime != w->attr.st_mtime	2705	\|\| w->prev.st_mtime != w->attr.st_mtime
2597	\|\| w->prev.st_ctime != w->attr.st_ctime	2706	\|\| w->prev.st_ctime != w->attr.st_ctime
2598	) {	2707	) {
2599	#if EV_USE_INOTIFY	2708	#if EV_USE_INOTIFY
		2709	if (fs_fd >= 0)
		2710	{
2600	infy_del (EV_A_ w);	2711	infy_del (EV_A_ w);
2601	infy_add (EV_A_ w);	2712	infy_add (EV_A_ w);
2602	ev_stat_stat (EV_A_ w); /* avoid race... */	2713	ev_stat_stat (EV_A_ w); /* avoid race... */
		2714	}
2603	#endif	2715	#endif
2604		2716
2605	ev_feed_event (EV_A_ w, EV_STAT);	2717	ev_feed_event (EV_A_ w, EV_STAT);
2606	}	2718	}
2607	}	2719	}
…		…
2610	ev_stat_start (EV_P_ ev_stat *w)	2722	ev_stat_start (EV_P_ ev_stat *w)
2611	{	2723	{
2612	if (expect_false (ev_is_active (w)))	2724	if (expect_false (ev_is_active (w)))
2613	return;	2725	return;
2614		2726
2615	/* since we use memcmp, we need to clear any padding data etc. */
2616	memset (&w->prev, 0, sizeof (ev_statdata));
2617	memset (&w->attr, 0, sizeof (ev_statdata));
2618
2619	ev_stat_stat (EV_A_ w);	2727	ev_stat_stat (EV_A_ w);
2620		2728
		2729	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2621	if (w->interval < MIN_STAT_INTERVAL)	2730	w->interval = MIN_STAT_INTERVAL;
2622	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2623		2731
2624	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2732	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2625	ev_set_priority (&w->timer, ev_priority (w));	2733	ev_set_priority (&w->timer, ev_priority (w));
2626		2734
2627	#if EV_USE_INOTIFY	2735	#if EV_USE_INOTIFY
2628	infy_init (EV_A);	2736	infy_init (EV_A);
2629		2737
2630	if (fs_fd >= 0)	2738	if (fs_fd >= 0)
2631	infy_add (EV_A_ w);	2739	infy_add (EV_A_ w);
2632	else	2740	else
2633	#endif	2741	#endif
2634	ev_timer_start (EV_A_ &w->timer);	2742	ev_timer_again (EV_A_ &w->timer);
2635		2743
2636	ev_start (EV_A_ (W)w, 1);	2744	ev_start (EV_A_ (W)w, 1);
2637		2745
2638	EV_FREQUENT_CHECK;	2746	EV_FREQUENT_CHECK;
2639	}	2747	}
…		…
2809	ev_loop (EV_A_ EVLOOP_NONBLOCK);	2917	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2810	}	2918	}
2811	}	2919	}
2812	}	2920	}
2813		2921
		2922	static void
		2923	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		2924	{
		2925	ev_embed w = (ev_embed )(((char *)fork_w) - offsetof (ev_embed, fork));
		2926
		2927	ev_embed_stop (EV_A_ w);
		2928
		2929	{
		2930	struct ev_loop *loop = w->other;
		2931
		2932	ev_loop_fork (EV_A);
		2933	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2934	}
		2935
		2936	ev_embed_start (EV_A_ w);
		2937	}
		2938
2814	#if 0	2939	#if 0
2815	static void	2940	static void
2816	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	2941	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2817	{	2942	{
2818	ev_idle_stop (EV_A_ idle);	2943	ev_idle_stop (EV_A_ idle);
…		…
2825	if (expect_false (ev_is_active (w)))	2950	if (expect_false (ev_is_active (w)))
2826	return;	2951	return;
2827		2952
2828	{	2953	{
2829	struct ev_loop *loop = w->other;	2954	struct ev_loop *loop = w->other;
2830	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2955	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2831	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	2956	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2832	}	2957	}
2833		2958
2834	EV_FREQUENT_CHECK;	2959	EV_FREQUENT_CHECK;
2835		2960
…		…
2838		2963
2839	ev_prepare_init (&w->prepare, embed_prepare_cb);	2964	ev_prepare_init (&w->prepare, embed_prepare_cb);
2840	ev_set_priority (&w->prepare, EV_MINPRI);	2965	ev_set_priority (&w->prepare, EV_MINPRI);
2841	ev_prepare_start (EV_A_ &w->prepare);	2966	ev_prepare_start (EV_A_ &w->prepare);
2842		2967
		2968	ev_fork_init (&w->fork, embed_fork_cb);
		2969	ev_fork_start (EV_A_ &w->fork);
		2970
2843	/ev_idle_init (&w->idle, e,bed_idle_cb);/	2971	/ev_idle_init (&w->idle, e,bed_idle_cb);/
2844		2972
2845	ev_start (EV_A_ (W)w, 1);	2973	ev_start (EV_A_ (W)w, 1);
2846		2974
2847	EV_FREQUENT_CHECK;	2975	EV_FREQUENT_CHECK;
…		…
2854	if (expect_false (!ev_is_active (w)))	2982	if (expect_false (!ev_is_active (w)))
2855	return;	2983	return;
2856		2984
2857	EV_FREQUENT_CHECK;	2985	EV_FREQUENT_CHECK;
2858		2986
2859	ev_io_stop (EV_A_ &w->io);	2987	ev_io_stop (EV_A_ &w->io);
2860	ev_prepare_stop (EV_A_ &w->prepare);	2988	ev_prepare_stop (EV_A_ &w->prepare);
2861		2989	ev_fork_stop (EV_A_ &w->fork);
2862	ev_stop (EV_A_ (W)w);
2863		2990
2864	EV_FREQUENT_CHECK;	2991	EV_FREQUENT_CHECK;
2865	}	2992	}
2866	#endif	2993	#endif
2867		2994
…		…
2964	once_cb (EV_P_ struct ev_once *once, int revents)	3091	once_cb (EV_P_ struct ev_once *once, int revents)
2965	{	3092	{
2966	void (cb)(int revents, void arg) = once->cb;	3093	void (cb)(int revents, void arg) = once->cb;
2967	void *arg = once->arg;	3094	void *arg = once->arg;
2968		3095
2969	ev_io_stop (EV_A_ &once->io);	3096	ev_io_stop (EV_A_ &once->io);
2970	ev_timer_stop (EV_A_ &once->to);	3097	ev_timer_stop (EV_A_ &once->to);
2971	ev_free (once);	3098	ev_free (once);
2972		3099
2973	cb (revents, arg);	3100	cb (revents, arg);
2974	}	3101	}
2975		3102
2976	static void	3103	static void
2977	once_cb_io (EV_P_ ev_io *w, int revents)	3104	once_cb_io (EV_P_ ev_io *w, int revents)
2978	{	3105	{
2979	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	3106	struct ev_once once = (struct ev_once )(((char *)w) - offsetof (struct ev_once, io));
		3107
		3108	once_cb (EV_A_ once, revents \| ev_clear_pending (EV_A_ &once->to));
2980	}	3109	}
2981		3110
2982	static void	3111	static void
2983	once_cb_to (EV_P_ ev_timer *w, int revents)	3112	once_cb_to (EV_P_ ev_timer *w, int revents)
2984	{	3113	{
2985	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	3114	struct ev_once once = (struct ev_once )(((char *)w) - offsetof (struct ev_once, to));
		3115
		3116	once_cb (EV_A_ once, revents \| ev_clear_pending (EV_A_ &once->io));
2986	}	3117	}
2987		3118
2988	void	3119	void
2989	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	3120	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
2990	{	3121	{
…		…
3012	ev_timer_set (&once->to, timeout, 0.);	3143	ev_timer_set (&once->to, timeout, 0.);
3013	ev_timer_start (EV_A_ &once->to);	3144	ev_timer_start (EV_A_ &once->to);
3014	}	3145	}
3015	}	3146	}
3016		3147
		3148	/*****************************************************************************/
		3149
		3150	#if 0
		3151	void
		3152	ev_walk (EV_P_ int types, void (cb)(EV_P_ int type, void w))
		3153	{
		3154	int i, j;
		3155	ev_watcher_list wl, wn;
		3156
		3157	if (types & (EV_IO \| EV_EMBED))
		3158	for (i = 0; i < anfdmax; ++i)
		3159	for (wl = anfds [i].head; wl; )
		3160	{
		3161	wn = wl->next;
		3162
		3163	#if EV_EMBED_ENABLE
		3164	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3165	{
		3166	if (types & EV_EMBED)
		3167	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3168	}
		3169	else
		3170	#endif
		3171	#if EV_USE_INOTIFY
		3172	if (ev_cb ((ev_io *)wl) == infy_cb)
		3173	;
		3174	else
		3175	#endif
		3176	if ((ev_io *)wl != &pipeev)
		3177	if (types & EV_IO)
		3178	cb (EV_A_ EV_IO, wl);
		3179
		3180	wl = wn;
		3181	}
		3182
		3183	if (types & (EV_TIMER \| EV_STAT))
		3184	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3185	#if EV_STAT_ENABLE
		3186	/TODO: timer is not always active/
		3187	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3188	{
		3189	if (types & EV_STAT)
		3190	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3191	}
		3192	else
		3193	#endif
		3194	if (types & EV_TIMER)
		3195	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3196
		3197	#if EV_PERIODIC_ENABLE
		3198	if (types & EV_PERIODIC)
		3199	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3200	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3201	#endif
		3202
		3203	#if EV_IDLE_ENABLE
		3204	if (types & EV_IDLE)
		3205	for (j = NUMPRI; i--; )
		3206	for (i = idlecnt [j]; i--; )
		3207	cb (EV_A_ EV_IDLE, idles [j][i]);
		3208	#endif
		3209
		3210	#if EV_FORK_ENABLE
		3211	if (types & EV_FORK)
		3212	for (i = forkcnt; i--; )
		3213	if (ev_cb (forks [i]) != embed_fork_cb)
		3214	cb (EV_A_ EV_FORK, forks [i]);
		3215	#endif
		3216
		3217	#if EV_ASYNC_ENABLE
		3218	if (types & EV_ASYNC)
		3219	for (i = asynccnt; i--; )
		3220	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3221	#endif
		3222
		3223	if (types & EV_PREPARE)
		3224	for (i = preparecnt; i--; )
		3225	#if EV_EMBED_ENABLE
		3226	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3227	#endif
		3228	cb (EV_A_ EV_PREPARE, prepares [i]);
		3229
		3230	if (types & EV_CHECK)
		3231	for (i = checkcnt; i--; )
		3232	cb (EV_A_ EV_CHECK, checks [i]);
		3233
		3234	if (types & EV_SIGNAL)
		3235	for (i = 0; i < signalmax; ++i)
		3236	for (wl = signals [i].head; wl; )
		3237	{
		3238	wn = wl->next;
		3239	cb (EV_A_ EV_SIGNAL, wl);
		3240	wl = wn;
		3241	}
		3242
		3243	if (types & EV_CHILD)
		3244	for (i = EV_PID_HASHSIZE; i--; )
		3245	for (wl = childs [i]; wl; )
		3246	{
		3247	wn = wl->next;
		3248	cb (EV_A_ EV_CHILD, wl);
		3249	wl = wn;
		3250	}
		3251	/* EV_STAT 0x00001000 /* stat data changed */
		3252	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3253	}
		3254	#endif
		3255
3017	#if EV_MULTIPLICITY	3256	#if EV_MULTIPLICITY
3018	#include "ev_wrap.h"	3257	#include "ev_wrap.h"
3019	#endif	3258	#endif
3020		3259
3021	#ifdef __cplusplus	3260	#ifdef __cplusplus

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Comparing libev/ev.c (file contents): Revision 1.252 by root, Thu May 22 03:43:32 2008 UTC vs. Revision 1.283 by root, Wed Apr 15 09:51:19 2009 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.252 by root, Thu May 22 03:43:32 2008 UTC vs.
Revision 1.283 by root, Wed Apr 15 09:51:19 2009 UTC