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

Comparing libev/ev.c (file contents):
Revision 1.249 by root, Wed May 21 23:30:52 2008 UTC vs.
Revision 1.278 by root, Tue Jan 6 19:46:56 2009 UTC

…		…
1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without modifica-	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* tion, are permitted provided that the following conditions are met:	8	* tion, are permitted provided that the following conditions are met:
9	*	9	*
47	# include EV_CONFIG_H	47	# include EV_CONFIG_H
48	# else	48	# else
49	# include "config.h"	49	# include "config.h"
50	# endif	50	# endif
51		51
		52	# if HAVE_CLOCK_SYSCALL
		53	# ifndef EV_USE_CLOCK_SYSCALL
		54	# define EV_USE_CLOCK_SYSCALL 1
		55	# ifndef EV_USE_REALTIME
		56	# define EV_USE_REALTIME 0
		57	# endif
		58	# ifndef EV_USE_MONOTONIC
		59	# define EV_USE_MONOTONIC 1
		60	# endif
		61	# endif
		62	# endif
		63
52	# if HAVE_CLOCK_GETTIME	64	# if HAVE_CLOCK_GETTIME
53	# ifndef EV_USE_MONOTONIC	65	# ifndef EV_USE_MONOTONIC
54	# define EV_USE_MONOTONIC 1	66	# define EV_USE_MONOTONIC 1
55	# endif	67	# endif
56	# ifndef EV_USE_REALTIME	68	# ifndef EV_USE_REALTIME
…		…
126	# define EV_USE_EVENTFD 1	138	# define EV_USE_EVENTFD 1
127	# else	139	# else
128	# define EV_USE_EVENTFD 0	140	# define EV_USE_EVENTFD 0
129	# endif	141	# endif
130	# endif	142	# endif
131		143
132	#endif	144	#endif
133		145
134	#include <math.h>	146	#include <math.h>
135	#include <stdlib.h>	147	#include <stdlib.h>
136	#include <fcntl.h>	148	#include <fcntl.h>
…		…
154	#ifndef _WIN32	166	#ifndef _WIN32
155	# include <sys/time.h>	167	# include <sys/time.h>
156	# include <sys/wait.h>	168	# include <sys/wait.h>
157	# include <unistd.h>	169	# include <unistd.h>
158	#else	170	#else
		171	# include <io.h>
159	# define WIN32_LEAN_AND_MEAN	172	# define WIN32_LEAN_AND_MEAN
160	# include <windows.h>	173	# include <windows.h>
161	# ifndef EV_SELECT_IS_WINSOCKET	174	# ifndef EV_SELECT_IS_WINSOCKET
162	# define EV_SELECT_IS_WINSOCKET 1	175	# define EV_SELECT_IS_WINSOCKET 1
163	# endif	176	# endif
164	#endif	177	#endif
165		178
166	/* this block tries to deduce configuration from header-defined symbols and defaults */	179	/* this block tries to deduce configuration from header-defined symbols and defaults */
167		180
		181	#ifndef EV_USE_CLOCK_SYSCALL
		182	# if __linux && __GLIBC__ >= 2
		183	# define EV_USE_CLOCK_SYSCALL 1
		184	# else
		185	# define EV_USE_CLOCK_SYSCALL 0
		186	# endif
		187	#endif
		188
168	#ifndef EV_USE_MONOTONIC	189	#ifndef EV_USE_MONOTONIC
		190	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
		191	# define EV_USE_MONOTONIC 1
		192	# else
169	# define EV_USE_MONOTONIC 0	193	# define EV_USE_MONOTONIC 0
		194	# endif
170	#endif	195	#endif
171		196
172	#ifndef EV_USE_REALTIME	197	#ifndef EV_USE_REALTIME
173	# define EV_USE_REALTIME 0	198	# define EV_USE_REALTIME 0
174	#endif	199	#endif
175		200
176	#ifndef EV_USE_NANOSLEEP	201	#ifndef EV_USE_NANOSLEEP
		202	# if _POSIX_C_SOURCE >= 199309L
		203	# define EV_USE_NANOSLEEP 1
		204	# else
177	# define EV_USE_NANOSLEEP 0	205	# define EV_USE_NANOSLEEP 0
		206	# endif
178	#endif	207	#endif
179		208
180	#ifndef EV_USE_SELECT	209	#ifndef EV_USE_SELECT
181	# define EV_USE_SELECT 1	210	# define EV_USE_SELECT 1
182	#endif	211	#endif
…		…
236	# define EV_USE_EVENTFD 0	265	# define EV_USE_EVENTFD 0
237	# endif	266	# endif
238	#endif	267	#endif
239		268
240	#if 0 /* debugging */	269	#if 0 /* debugging */
241	# define EV_VERIFY 1	270	# define EV_VERIFY 3
242	# define EV_USE_4HEAP 1	271	# define EV_USE_4HEAP 1
243	# define EV_HEAP_CACHE_AT 1	272	# define EV_HEAP_CACHE_AT 1
		273	#endif
		274
		275	#ifndef EV_VERIFY
		276	# define EV_VERIFY !EV_MINIMAL
244	#endif	277	#endif
245		278
246	#ifndef EV_USE_4HEAP	279	#ifndef EV_USE_4HEAP
247	# define EV_USE_4HEAP !EV_MINIMAL	280	# define EV_USE_4HEAP !EV_MINIMAL
248	#endif	281	#endif
…		…
273	# include <sys/select.h>	306	# include <sys/select.h>
274	# endif	307	# endif
275	#endif	308	#endif
276		309
277	#if EV_USE_INOTIFY	310	#if EV_USE_INOTIFY
		311	# include <sys/utsname.h>
		312	# include <sys/statfs.h>
278	# 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
279	#endif	319	#endif
280		320
281	#if EV_SELECT_IS_WINSOCKET	321	#if EV_SELECT_IS_WINSOCKET
282	# 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
283	#endif	332	#endif
284		333
285	#if EV_USE_EVENTFD	334	#if EV_USE_EVENTFD
286	/* 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 */
287	# include <stdint.h>	336	# include <stdint.h>
…		…
294	# endif	343	# endif
295	#endif	344	#endif
296		345
297	/**/	346	/**/
298		347
299	/* EV_VERIFY: enable internal consistency checks
300	* undefined or zero: no verification done or available
301	* 1 or higher: ev_loop_verify function available
302	* 2 or higher: ev_loop_verify is called frequently
303	*/
304	#if EV_VERIFY >= 1	348	#if EV_VERIFY >= 3
305	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)	349	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
306	#else	350	#else
307	# define EV_FREQUENT_CHECK do { } while (0)	351	# define EV_FREQUENT_CHECK do { } while (0)
308	#endif	352	#endif
309		353
…		…
374	{	418	{
375	syserr_cb = cb;	419	syserr_cb = cb;
376	}	420	}
377		421
378	static void noinline	422	static void noinline
379	syserr (const char *msg)	423	ev_syserr (const char *msg)
380	{	424	{
381	if (!msg)	425	if (!msg)
382	msg = "(libev) system error";	426	msg = "(libev) system error";
383		427
384	if (syserr_cb)	428	if (syserr_cb)
…		…
435	typedef struct	479	typedef struct
436	{	480	{
437	WL head;	481	WL head;
438	unsigned char events;	482	unsigned char events;
439	unsigned char reify;	483	unsigned char reify;
		484	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
		485	unsigned char unused;
		486	#if EV_USE_EPOLL
		487	unsigned int egen; /* generation counter to counter epoll bugs */
		488	#endif
440	#if EV_SELECT_IS_WINSOCKET	489	#if EV_SELECT_IS_WINSOCKET
441	SOCKET handle;	490	SOCKET handle;
442	#endif	491	#endif
443	} ANFD;	492	} ANFD;
444		493
…		…
557	struct timeval tv;	606	struct timeval tv;
558		607
559	tv.tv_sec = (time_t)delay;	608	tv.tv_sec = (time_t)delay;
560	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	609	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
561		610
		611	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		612	/* somehting nto guaranteed by newer posix versions, but guaranteed */
		613	/* by older ones */
562	select (0, 0, 0, 0, &tv);	614	select (0, 0, 0, 0, &tv);
563	#endif	615	#endif
564	}	616	}
565	}	617	}
566		618
…		…
593	array_realloc (int elem, void base, int cur, int cnt)	645	array_realloc (int elem, void base, int cur, int cnt)
594	{	646	{
595	cur = array_nextsize (elem, cur, cnt);	647	cur = array_nextsize (elem, cur, cnt);
596	return ev_realloc (base, elem * *cur);	648	return ev_realloc (base, elem * *cur);
597	}	649	}
		650
		651	#define array_init_zero(base,count) \
		652	memset ((void )(base), 0, sizeof ((base)) * (count))
598		653
599	#define array_needsize(type,base,cur,cnt,init) \	654	#define array_needsize(type,base,cur,cnt,init) \
600	if (expect_false ((cnt) > (cur))) \	655	if (expect_false ((cnt) > (cur))) \
601	{ \	656	{ \
602	int ocur_ = (cur); \	657	int ocur_ = (cur); \
…		…
646	ev_feed_event (EV_A_ events [i], type);	701	ev_feed_event (EV_A_ events [i], type);
647	}	702	}
648		703
649	/*****************************************************************************/	704	/*****************************************************************************/
650		705
651	void inline_size
652	anfds_init (ANFD *base, int count)
653	{
654	while (count--)
655	{
656	base->head = 0;
657	base->events = EV_NONE;
658	base->reify = 0;
659
660	++base;
661	}
662	}
663
664	void inline_speed	706	void inline_speed
665	fd_event (EV_P_ int fd, int revents)	707	fd_event (EV_P_ int fd, int revents)
666	{	708	{
667	ANFD *anfd = anfds + fd;	709	ANFD *anfd = anfds + fd;
668	ev_io *w;	710	ev_io *w;
…		…
700	events \|= (unsigned char)w->events;	742	events \|= (unsigned char)w->events;
701		743
702	#if EV_SELECT_IS_WINSOCKET	744	#if EV_SELECT_IS_WINSOCKET
703	if (events)	745	if (events)
704	{	746	{
705	unsigned long argp;	747	unsigned long arg;
706	#ifdef EV_FD_TO_WIN32_HANDLE	748	#ifdef EV_FD_TO_WIN32_HANDLE
707	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	749	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
708	#else	750	#else
709	anfd->handle = _get_osfhandle (fd);	751	anfd->handle = _get_osfhandle (fd);
710	#endif	752	#endif
711	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	753	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
712	}	754	}
713	#endif	755	#endif
714		756
715	{	757	{
716	unsigned char o_events = anfd->events;	758	unsigned char o_events = anfd->events;
…		…
769	{	811	{
770	int fd;	812	int fd;
771		813
772	for (fd = 0; fd < anfdmax; ++fd)	814	for (fd = 0; fd < anfdmax; ++fd)
773	if (anfds [fd].events)	815	if (anfds [fd].events)
774	if (!fd_valid (fd) == -1 && errno == EBADF)	816	if (!fd_valid (fd) && errno == EBADF)
775	fd_kill (EV_A_ fd);	817	fd_kill (EV_A_ fd);
776	}	818	}
777		819
778	/* called on ENOMEM in select/poll to kill some fds and retry */	820	/* called on ENOMEM in select/poll to kill some fds and retry */
779	static void noinline	821	static void noinline
…		…
797		839
798	for (fd = 0; fd < anfdmax; ++fd)	840	for (fd = 0; fd < anfdmax; ++fd)
799	if (anfds [fd].events)	841	if (anfds [fd].events)
800	{	842	{
801	anfds [fd].events = 0;	843	anfds [fd].events = 0;
		844	anfds [fd].emask = 0;
802	fd_change (EV_A_ fd, EV_IOFDSET \| 1);	845	fd_change (EV_A_ fd, EV_IOFDSET \| 1);
803	}	846	}
804	}	847	}
805		848
806	/*****************************************************************************/	849	/*****************************************************************************/
…		…
938	/* rebuild the heap: this function is used only once and executed rarely */	981	/* rebuild the heap: this function is used only once and executed rarely */
939	void inline_size	982	void inline_size
940	reheap (ANHE *heap, int N)	983	reheap (ANHE *heap, int N)
941	{	984	{
942	int i;	985	int i;
		986
943	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */	987	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
944	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */	988	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
945	for (i = 0; i < N; ++i)	989	for (i = 0; i < N; ++i)
946	upheap (heap, i + HEAP0);	990	upheap (heap, i + HEAP0);
947	}	991	}
948		992
949	#if EV_VERIFY
950	static void
951	checkheap (ANHE *heap, int N)
952	{
953	int i;
954
955	for (i = HEAP0; i < N + HEAP0; ++i)
956	{
957	assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
958	assert (("heap condition violated", i == HEAP0 \|\| ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
959	assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
960	}
961	}
962	#endif
963
964	/*****************************************************************************/	993	/*****************************************************************************/
965		994
966	typedef struct	995	typedef struct
967	{	996	{
968	WL head;	997	WL head;
…		…
972	static ANSIG *signals;	1001	static ANSIG *signals;
973	static int signalmax;	1002	static int signalmax;
974		1003
975	static EV_ATOMIC_T gotsig;	1004	static EV_ATOMIC_T gotsig;
976		1005
977	void inline_size
978	signals_init (ANSIG *base, int count)
979	{
980	while (count--)
981	{
982	base->head = 0;
983	base->gotsig = 0;
984
985	++base;
986	}
987	}
988
989	/*****************************************************************************/	1006	/*****************************************************************************/
990		1007
991	void inline_speed	1008	void inline_speed
992	fd_intern (int fd)	1009	fd_intern (int fd)
993	{	1010	{
994	#ifdef _WIN32	1011	#ifdef _WIN32
995	int arg = 1;	1012	unsigned long arg = 1;
996	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1013	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
997	#else	1014	#else
998	fcntl (fd, F_SETFD, FD_CLOEXEC);	1015	fcntl (fd, F_SETFD, FD_CLOEXEC);
999	fcntl (fd, F_SETFL, O_NONBLOCK);	1016	fcntl (fd, F_SETFL, O_NONBLOCK);
1000	#endif	1017	#endif
…		…
1014	}	1031	}
1015	else	1032	else
1016	#endif	1033	#endif
1017	{	1034	{
1018	while (pipe (evpipe))	1035	while (pipe (evpipe))
1019	syserr ("(libev) error creating signal/async pipe");	1036	ev_syserr ("(libev) error creating signal/async pipe");
1020		1037
1021	fd_intern (evpipe [0]);	1038	fd_intern (evpipe [0]);
1022	fd_intern (evpipe [1]);	1039	fd_intern (evpipe [1]);
1023	ev_io_set (&pipeev, evpipe [0], EV_READ);	1040	ev_io_set (&pipeev, evpipe [0], EV_READ);
1024	}	1041	}
…		…
1114	ev_feed_signal_event (EV_P_ int signum)	1131	ev_feed_signal_event (EV_P_ int signum)
1115	{	1132	{
1116	WL w;	1133	WL w;
1117		1134
1118	#if EV_MULTIPLICITY	1135	#if EV_MULTIPLICITY
1119	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1136	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1120	#endif	1137	#endif
1121		1138
1122	--signum;	1139	--signum;
1123		1140
1124	if (signum < 0 \|\| signum >= signalmax)	1141	if (signum < 0 \|\| signum >= signalmax)
…		…
1253	/* kqueue is borked on everything but netbsd apparently */	1270	/* kqueue is borked on everything but netbsd apparently */
1254	/* it usually doesn't work correctly on anything but sockets and pipes */	1271	/* it usually doesn't work correctly on anything but sockets and pipes */
1255	flags &= ~EVBACKEND_KQUEUE;	1272	flags &= ~EVBACKEND_KQUEUE;
1256	#endif	1273	#endif
1257	#ifdef __APPLE__	1274	#ifdef __APPLE__
1258	// flags &= ~EVBACKEND_KQUEUE; for documentation	1275	/* only select works correctly on that "unix-certified" platform */
1259	flags &= ~EVBACKEND_POLL;	1276	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1277	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1260	#endif	1278	#endif
1261		1279
1262	return flags;	1280	return flags;
1263	}	1281	}
1264		1282
…		…
1484		1502
1485	postfork = 0;	1503	postfork = 0;
1486	}	1504	}
1487		1505
1488	#if EV_MULTIPLICITY	1506	#if EV_MULTIPLICITY
		1507
1489	struct ev_loop *	1508	struct ev_loop *
1490	ev_loop_new (unsigned int flags)	1509	ev_loop_new (unsigned int flags)
1491	{	1510	{
1492	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));	1511	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
1493		1512
…		…
1513	{	1532	{
1514	postfork = 1; /* must be in line with ev_default_fork */	1533	postfork = 1; /* must be in line with ev_default_fork */
1515	}	1534	}
1516		1535
1517	#if EV_VERIFY	1536	#if EV_VERIFY
1518	static void	1537	static void noinline
		1538	verify_watcher (EV_P_ W w)
		1539	{
		1540	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1541
		1542	if (w->pending)
		1543	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1544	}
		1545
		1546	static void noinline
		1547	verify_heap (EV_P_ ANHE *heap, int N)
		1548	{
		1549	int i;
		1550
		1551	for (i = HEAP0; i < N + HEAP0; ++i)
		1552	{
		1553	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1554	assert (("libev: heap condition violated", i == HEAP0 \|\| ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1555	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1556
		1557	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1558	}
		1559	}
		1560
		1561	static void noinline
1519	array_check (W **ws, int cnt)	1562	array_verify (EV_P_ W *ws, int cnt)
1520	{	1563	{
1521	while (cnt--)	1564	while (cnt--)
		1565	{
1522	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));	1566	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1567	verify_watcher (EV_A_ ws [cnt]);
		1568	}
1523	}	1569	}
		1570	#endif
1524		1571
1525	static void	1572	void
1526	ev_loop_verify (EV_P)	1573	ev_loop_verify (EV_P)
1527	{	1574	{
		1575	#if EV_VERIFY
1528	int i;	1576	int i;
		1577	WL w;
1529		1578
		1579	assert (activecnt >= -1);
		1580
		1581	assert (fdchangemax >= fdchangecnt);
		1582	for (i = 0; i < fdchangecnt; ++i)
		1583	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1584
		1585	assert (anfdmax >= 0);
		1586	for (i = 0; i < anfdmax; ++i)
		1587	for (w = anfds [i].head; w; w = w->next)
		1588	{
		1589	verify_watcher (EV_A_ (W)w);
		1590	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1591	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1592	}
		1593
		1594	assert (timermax >= timercnt);
1530	checkheap (timers, timercnt);	1595	verify_heap (EV_A_ timers, timercnt);
		1596
1531	#if EV_PERIODIC_ENABLE	1597	#if EV_PERIODIC_ENABLE
		1598	assert (periodicmax >= periodiccnt);
1532	checkheap (periodics, periodiccnt);	1599	verify_heap (EV_A_ periodics, periodiccnt);
1533	#endif	1600	#endif
1534		1601
		1602	for (i = NUMPRI; i--; )
		1603	{
		1604	assert (pendingmax [i] >= pendingcnt [i]);
1535	#if EV_IDLE_ENABLE	1605	#if EV_IDLE_ENABLE
1536	for (i = NUMPRI; i--; )	1606	assert (idleall >= 0);
		1607	assert (idlemax [i] >= idlecnt [i]);
1537	array_check ((W **)idles [i], idlecnt [i]);	1608	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1538	#endif	1609	#endif
		1610	}
		1611
1539	#if EV_FORK_ENABLE	1612	#if EV_FORK_ENABLE
		1613	assert (forkmax >= forkcnt);
1540	array_check ((W **)forks, forkcnt);	1614	array_verify (EV_A_ (W *)forks, forkcnt);
1541	#endif	1615	#endif
1542	array_check ((W **)prepares, preparecnt);	1616
1543	array_check ((W **)checks, checkcnt);
1544	#if EV_ASYNC_ENABLE	1617	#if EV_ASYNC_ENABLE
		1618	assert (asyncmax >= asynccnt);
1545	array_check ((W **)asyncs, asynccnt);	1619	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1620	#endif
		1621
		1622	assert (preparemax >= preparecnt);
		1623	array_verify (EV_A_ (W *)prepares, preparecnt);
		1624
		1625	assert (checkmax >= checkcnt);
		1626	array_verify (EV_A_ (W *)checks, checkcnt);
		1627
		1628	# if 0
		1629	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
		1630	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1546	#endif	1631	# endif
1547	}
1548	#endif	1632	#endif
		1633	}
1549		1634
1550	#endif	1635	#endif /* multiplicity */
1551		1636
1552	#if EV_MULTIPLICITY	1637	#if EV_MULTIPLICITY
1553	struct ev_loop *	1638	struct ev_loop *
1554	ev_default_loop_init (unsigned int flags)	1639	ev_default_loop_init (unsigned int flags)
1555	#else	1640	#else
…		…
1588	{	1673	{
1589	#if EV_MULTIPLICITY	1674	#if EV_MULTIPLICITY
1590	struct ev_loop *loop = ev_default_loop_ptr;	1675	struct ev_loop *loop = ev_default_loop_ptr;
1591	#endif	1676	#endif
1592		1677
		1678	ev_default_loop_ptr = 0;
		1679
1593	#ifndef _WIN32	1680	#ifndef _WIN32
1594	ev_ref (EV_A); /* child watcher */	1681	ev_ref (EV_A); /* child watcher */
1595	ev_signal_stop (EV_A_ &childev);	1682	ev_signal_stop (EV_A_ &childev);
1596	#endif	1683	#endif
1597		1684
…		…
1603	{	1690	{
1604	#if EV_MULTIPLICITY	1691	#if EV_MULTIPLICITY
1605	struct ev_loop *loop = ev_default_loop_ptr;	1692	struct ev_loop *loop = ev_default_loop_ptr;
1606	#endif	1693	#endif
1607		1694
1608	if (backend)
1609	postfork = 1; /* must be in line with ev_loop_fork */	1695	postfork = 1; /* must be in line with ev_loop_fork */
1610	}	1696	}
1611		1697
1612	/*****************************************************************************/	1698	/*****************************************************************************/
1613		1699
1614	void	1700	void
…		…
1619		1705
1620	void inline_speed	1706	void inline_speed
1621	call_pending (EV_P)	1707	call_pending (EV_P)
1622	{	1708	{
1623	int pri;	1709	int pri;
1624
1625	EV_FREQUENT_CHECK;
1626		1710
1627	for (pri = NUMPRI; pri--; )	1711	for (pri = NUMPRI; pri--; )
1628	while (pendingcnt [pri])	1712	while (pendingcnt [pri])
1629	{	1713	{
1630	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1714	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1631		1715
1632	if (expect_true (p->w))	1716	if (expect_true (p->w))
1633	{	1717	{
1634	/assert (("non-pending watcher on pending list", p->w->pending));/	1718	/assert (("libev: non-pending watcher on pending list", p->w->pending));/
1635		1719
1636	p->w->pending = 0;	1720	p->w->pending = 0;
1637	EV_CB_INVOKE (p->w, p->events);	1721	EV_CB_INVOKE (p->w, p->events);
		1722	EV_FREQUENT_CHECK;
1638	}	1723	}
1639	}	1724	}
1640
1641	EV_FREQUENT_CHECK;
1642	}	1725	}
1643		1726
1644	#if EV_IDLE_ENABLE	1727	#if EV_IDLE_ENABLE
1645	void inline_size	1728	void inline_size
1646	idle_reify (EV_P)	1729	idle_reify (EV_P)
…		…
1671		1754
1672	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	1755	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1673	{	1756	{
1674	ev_timer w = (ev_timer )ANHE_w (timers [HEAP0]);	1757	ev_timer w = (ev_timer )ANHE_w (timers [HEAP0]);
1675		1758
1676	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/	1759	/assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));/
1677		1760
1678	/* first reschedule or stop timer */	1761	/* first reschedule or stop timer */
1679	if (w->repeat)	1762	if (w->repeat)
1680	{	1763	{
1681	ev_at (w) += w->repeat;	1764	ev_at (w) += w->repeat;
1682	if (ev_at (w) < mn_now)	1765	if (ev_at (w) < mn_now)
1683	ev_at (w) = mn_now;	1766	ev_at (w) = mn_now;
1684		1767
1685	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1768	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1686		1769
1687	ANHE_at_cache (timers [HEAP0]);	1770	ANHE_at_cache (timers [HEAP0]);
1688	downheap (timers, timercnt, HEAP0);	1771	downheap (timers, timercnt, HEAP0);
1689	}	1772	}
1690	else	1773	else
…		…
1698	#if EV_PERIODIC_ENABLE	1781	#if EV_PERIODIC_ENABLE
1699	void inline_size	1782	void inline_size
1700	periodics_reify (EV_P)	1783	periodics_reify (EV_P)
1701	{	1784	{
1702	EV_FREQUENT_CHECK;	1785	EV_FREQUENT_CHECK;
		1786
1703	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	1787	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1704	{	1788	{
1705	ev_periodic w = (ev_periodic )ANHE_w (periodics [HEAP0]);	1789	ev_periodic w = (ev_periodic )ANHE_w (periodics [HEAP0]);
1706		1790
1707	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/	1791	/assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));/
1708		1792
1709	/* first reschedule or stop timer */	1793	/* first reschedule or stop timer */
1710	if (w->reschedule_cb)	1794	if (w->reschedule_cb)
1711	{	1795	{
1712	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1796	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1713		1797
1714	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));	1798	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1715		1799
1716	ANHE_at_cache (periodics [HEAP0]);	1800	ANHE_at_cache (periodics [HEAP0]);
1717	downheap (periodics, periodiccnt, HEAP0);	1801	downheap (periodics, periodiccnt, HEAP0);
1718	EV_FREQUENT_CHECK;
1719	}	1802	}
1720	else if (w->interval)	1803	else if (w->interval)
1721	{	1804	{
1722	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	1805	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1723	/* if next trigger time is not sufficiently in the future, put it there */	1806	/* if next trigger time is not sufficiently in the future, put it there */
…		…
1848	ev_unref (EV_P)	1931	ev_unref (EV_P)
1849	{	1932	{
1850	--activecnt;	1933	--activecnt;
1851	}	1934	}
1852		1935
		1936	void
		1937	ev_now_update (EV_P)
		1938	{
		1939	time_update (EV_A_ 1e100);
		1940	}
		1941
1853	static int loop_done;	1942	static int loop_done;
1854		1943
1855	void	1944	void
1856	ev_loop (EV_P_ int flags)	1945	ev_loop (EV_P_ int flags)
1857	{	1946	{
…		…
1859		1948
1860	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	1949	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1861		1950
1862	do	1951	do
1863	{	1952	{
		1953	#if EV_VERIFY >= 2
		1954	ev_loop_verify (EV_A);
		1955	#endif
		1956
1864	#ifndef _WIN32	1957	#ifndef _WIN32
1865	if (expect_false (curpid)) /* penalise the forking check even more */	1958	if (expect_false (curpid)) /* penalise the forking check even more */
1866	if (expect_false (getpid () != curpid))	1959	if (expect_false (getpid () != curpid))
1867	{	1960	{
1868	curpid = getpid ();	1961	curpid = getpid ();
…		…
2061	int fd = w->fd;	2154	int fd = w->fd;
2062		2155
2063	if (expect_false (ev_is_active (w)))	2156	if (expect_false (ev_is_active (w)))
2064	return;	2157	return;
2065		2158
2066	assert (("ev_io_start called with negative fd", fd >= 0));	2159	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2160	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET \| EV_READ \| EV_WRITE))));
2067		2161
2068	EV_FREQUENT_CHECK;	2162	EV_FREQUENT_CHECK;
2069		2163
2070	ev_start (EV_A_ (W)w, 1);	2164	ev_start (EV_A_ (W)w, 1);
2071	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2165	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2072	wlist_add (&anfds[fd].head, (WL)w);	2166	wlist_add (&anfds[fd].head, (WL)w);
2073		2167
2074	fd_change (EV_A_ fd, w->events & EV_IOFDSET \| 1);	2168	fd_change (EV_A_ fd, w->events & EV_IOFDSET \| 1);
2075	w->events &= ~EV_IOFDSET;	2169	w->events &= ~EV_IOFDSET;
2076		2170
…		…
2082	{	2176	{
2083	clear_pending (EV_A_ (W)w);	2177	clear_pending (EV_A_ (W)w);
2084	if (expect_false (!ev_is_active (w)))	2178	if (expect_false (!ev_is_active (w)))
2085	return;	2179	return;
2086		2180
2087	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2181	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2088		2182
2089	EV_FREQUENT_CHECK;	2183	EV_FREQUENT_CHECK;
2090		2184
2091	wlist_del (&anfds[w->fd].head, (WL)w);	2185	wlist_del (&anfds[w->fd].head, (WL)w);
2092	ev_stop (EV_A_ (W)w);	2186	ev_stop (EV_A_ (W)w);
…		…
2102	if (expect_false (ev_is_active (w)))	2196	if (expect_false (ev_is_active (w)))
2103	return;	2197	return;
2104		2198
2105	ev_at (w) += mn_now;	2199	ev_at (w) += mn_now;
2106		2200
2107	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2201	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2108		2202
2109	EV_FREQUENT_CHECK;	2203	EV_FREQUENT_CHECK;
2110		2204
2111	++timercnt;	2205	++timercnt;
2112	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);	2206	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
…		…
2115	ANHE_at_cache (timers [ev_active (w)]);	2209	ANHE_at_cache (timers [ev_active (w)]);
2116	upheap (timers, ev_active (w));	2210	upheap (timers, ev_active (w));
2117		2211
2118	EV_FREQUENT_CHECK;	2212	EV_FREQUENT_CHECK;
2119		2213
2120	/assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));/	2214	/assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));/
2121	}	2215	}
2122		2216
2123	void noinline	2217	void noinline
2124	ev_timer_stop (EV_P_ ev_timer *w)	2218	ev_timer_stop (EV_P_ ev_timer *w)
2125	{	2219	{
…		…
2130	EV_FREQUENT_CHECK;	2224	EV_FREQUENT_CHECK;
2131		2225
2132	{	2226	{
2133	int active = ev_active (w);	2227	int active = ev_active (w);
2134		2228
2135	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2229	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2136		2230
2137	--timercnt;	2231	--timercnt;
2138		2232
2139	if (expect_true (active < timercnt + HEAP0))	2233	if (expect_true (active < timercnt + HEAP0))
2140	{	2234	{
…		…
2184		2278
2185	if (w->reschedule_cb)	2279	if (w->reschedule_cb)
2186	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2280	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2187	else if (w->interval)	2281	else if (w->interval)
2188	{	2282	{
2189	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2283	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2190	/* this formula differs from the one in periodic_reify because we do not always round up */	2284	/* this formula differs from the one in periodic_reify because we do not always round up */
2191	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2285	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2192	}	2286	}
2193	else	2287	else
2194	ev_at (w) = w->offset;	2288	ev_at (w) = w->offset;
…		…
2202	ANHE_at_cache (periodics [ev_active (w)]);	2296	ANHE_at_cache (periodics [ev_active (w)]);
2203	upheap (periodics, ev_active (w));	2297	upheap (periodics, ev_active (w));
2204		2298
2205	EV_FREQUENT_CHECK;	2299	EV_FREQUENT_CHECK;
2206		2300
2207	/assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));/	2301	/assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));/
2208	}	2302	}
2209		2303
2210	void noinline	2304	void noinline
2211	ev_periodic_stop (EV_P_ ev_periodic *w)	2305	ev_periodic_stop (EV_P_ ev_periodic *w)
2212	{	2306	{
…		…
2217	EV_FREQUENT_CHECK;	2311	EV_FREQUENT_CHECK;
2218		2312
2219	{	2313	{
2220	int active = ev_active (w);	2314	int active = ev_active (w);
2221		2315
2222	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2316	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2223		2317
2224	--periodiccnt;	2318	--periodiccnt;
2225		2319
2226	if (expect_true (active < periodiccnt + HEAP0))	2320	if (expect_true (active < periodiccnt + HEAP0))
2227	{	2321	{
…		…
2250		2344
2251	void noinline	2345	void noinline
2252	ev_signal_start (EV_P_ ev_signal *w)	2346	ev_signal_start (EV_P_ ev_signal *w)
2253	{	2347	{
2254	#if EV_MULTIPLICITY	2348	#if EV_MULTIPLICITY
2255	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2349	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2256	#endif	2350	#endif
2257	if (expect_false (ev_is_active (w)))	2351	if (expect_false (ev_is_active (w)))
2258	return;	2352	return;
2259		2353
2260	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2354	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2261		2355
2262	evpipe_init (EV_A);	2356	evpipe_init (EV_A);
2263		2357
2264	EV_FREQUENT_CHECK;	2358	EV_FREQUENT_CHECK;
2265		2359
…		…
2268	sigset_t full, prev;	2362	sigset_t full, prev;
2269	sigfillset (&full);	2363	sigfillset (&full);
2270	sigprocmask (SIG_SETMASK, &full, &prev);	2364	sigprocmask (SIG_SETMASK, &full, &prev);
2271	#endif	2365	#endif
2272		2366
2273	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2367	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2274		2368
2275	#ifndef _WIN32	2369	#ifndef _WIN32
2276	sigprocmask (SIG_SETMASK, &prev, 0);	2370	sigprocmask (SIG_SETMASK, &prev, 0);
2277	#endif	2371	#endif
2278	}	2372	}
…		…
2316		2410
2317	void	2411	void
2318	ev_child_start (EV_P_ ev_child *w)	2412	ev_child_start (EV_P_ ev_child *w)
2319	{	2413	{
2320	#if EV_MULTIPLICITY	2414	#if EV_MULTIPLICITY
2321	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2415	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2322	#endif	2416	#endif
2323	if (expect_false (ev_is_active (w)))	2417	if (expect_false (ev_is_active (w)))
2324	return;	2418	return;
2325		2419
2326	EV_FREQUENT_CHECK;	2420	EV_FREQUENT_CHECK;
…		…
2351	# ifdef _WIN32	2445	# ifdef _WIN32
2352	# undef lstat	2446	# undef lstat
2353	# define lstat(a,b) _stati64 (a,b)	2447	# define lstat(a,b) _stati64 (a,b)
2354	# endif	2448	# endif
2355		2449
2356	#define DEF_STAT_INTERVAL 5.0074891	2450	#define DEF_STAT_INTERVAL 5.0074891
		2451	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2357	#define MIN_STAT_INTERVAL 0.1074891	2452	#define MIN_STAT_INTERVAL 0.1074891
2358		2453
2359	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2454	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2360		2455
2361	#if EV_USE_INOTIFY	2456	#if EV_USE_INOTIFY
2362	# define EV_INOTIFY_BUFSIZE 8192	2457	# define EV_INOTIFY_BUFSIZE 8192
…		…
2366	{	2461	{
2367	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB \| IN_DELETE_SELF \| IN_MOVE_SELF \| IN_MODIFY \| IN_DONT_FOLLOW \| IN_MASK_ADD);	2462	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB \| IN_DELETE_SELF \| IN_MOVE_SELF \| IN_MODIFY \| IN_DONT_FOLLOW \| IN_MASK_ADD);
2368		2463
2369	if (w->wd < 0)	2464	if (w->wd < 0)
2370	{	2465	{
		2466	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2371	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2467	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2372		2468
2373	/* monitor some parent directory for speedup hints */	2469	/* monitor some parent directory for speedup hints */
2374	/* note that exceeding the hardcoded limit is not a correctness issue, */	2470	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2375	/* but an efficiency issue only */	2471	/* but an efficiency issue only */
2376	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)	2472	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)
2377	{	2473	{
2378	char path [4096];	2474	char path [4096];
2379	strcpy (path, w->path);	2475	strcpy (path, w->path);
…		…
2383	int mask = IN_MASK_ADD \| IN_DELETE_SELF \| IN_MOVE_SELF	2479	int mask = IN_MASK_ADD \| IN_DELETE_SELF \| IN_MOVE_SELF
2384	\| (errno == EACCES ? IN_ATTRIB : IN_CREATE \| IN_MOVED_TO);	2480	\| (errno == EACCES ? IN_ATTRIB : IN_CREATE \| IN_MOVED_TO);
2385		2481
2386	char *pend = strrchr (path, '/');	2482	char *pend = strrchr (path, '/');
2387		2483
2388	if (!pend)	2484	if (!pend \|\| pend == path)
2389	break; /* whoops, no '/', complain to your admin */	2485	break;
2390		2486
2391	*pend = 0;	2487	*pend = 0;
2392	w->wd = inotify_add_watch (fs_fd, path, mask);	2488	w->wd = inotify_add_watch (fs_fd, path, mask);
2393	}	2489	}
2394	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));	2490	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));
2395	}	2491	}
2396	}	2492	}
2397	else
2398	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2399		2493
2400	if (w->wd >= 0)	2494	if (w->wd >= 0)
		2495	{
2401	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2496	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2497
		2498	/* now local changes will be tracked by inotify, but remote changes won't */
		2499	/* unless the filesystem it known to be local, we therefore still poll */
		2500	/* also do poll on <2.6.25, but with normal frequency */
		2501	struct statfs sfs;
		2502
		2503	if (fs_2625 && !statfs (w->path, &sfs))
		2504	if (sfs.f_type == 0x1373 /* devfs */
		2505	\|\| sfs.f_type == 0xEF53 /* ext2/3 */
		2506	\|\| sfs.f_type == 0x3153464a /* jfs */
		2507	\|\| sfs.f_type == 0x52654973 /* reiser3 */
		2508	\|\| sfs.f_type == 0x01021994 /* tempfs */
		2509	\|\| sfs.f_type == 0x58465342 /* xfs */)
		2510	return;
		2511
		2512	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2513	ev_timer_again (EV_A_ &w->timer);
		2514	}
2402	}	2515	}
2403		2516
2404	static void noinline	2517	static void noinline
2405	infy_del (EV_P_ ev_stat *w)	2518	infy_del (EV_P_ ev_stat *w)
2406	{	2519	{
…		…
2420		2533
2421	static void noinline	2534	static void noinline
2422	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2535	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2423	{	2536	{
2424	if (slot < 0)	2537	if (slot < 0)
2425	/* overflow, need to check for all hahs slots */	2538	/* overflow, need to check for all hash slots */
2426	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2539	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2427	infy_wd (EV_A_ slot, wd, ev);	2540	infy_wd (EV_A_ slot, wd, ev);
2428	else	2541	else
2429	{	2542	{
2430	WL w_;	2543	WL w_;
…		…
2436		2549
2437	if (w->wd == wd \|\| wd == -1)	2550	if (w->wd == wd \|\| wd == -1)
2438	{	2551	{
2439	if (ev->mask & (IN_IGNORED \| IN_UNMOUNT \| IN_DELETE_SELF))	2552	if (ev->mask & (IN_IGNORED \| IN_UNMOUNT \| IN_DELETE_SELF))
2440	{	2553	{
		2554	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2441	w->wd = -1;	2555	w->wd = -1;
2442	infy_add (EV_A_ w); /* re-add, no matter what */	2556	infy_add (EV_A_ w); /* re-add, no matter what */
2443	}	2557	}
2444		2558
2445	stat_timer_cb (EV_A_ &w->timer, 0);	2559	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2459	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2573	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2460	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2574	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2461	}	2575	}
2462		2576
2463	void inline_size	2577	void inline_size
		2578	check_2625 (EV_P)
		2579	{
		2580	/* kernels < 2.6.25 are borked
		2581	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2582	*/
		2583	struct utsname buf;
		2584	int major, minor, micro;
		2585
		2586	if (uname (&buf))
		2587	return;
		2588
		2589	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2590	return;
		2591
		2592	if (major < 2
		2593	\|\| (major == 2 && minor < 6)
		2594	\|\| (major == 2 && minor == 6 && micro < 25))
		2595	return;
		2596
		2597	fs_2625 = 1;
		2598	}
		2599
		2600	void inline_size
2464	infy_init (EV_P)	2601	infy_init (EV_P)
2465	{	2602	{
2466	if (fs_fd != -2)	2603	if (fs_fd != -2)
2467	return;	2604	return;
		2605
		2606	fs_fd = -1;
		2607
		2608	check_2625 (EV_A);
2468		2609
2469	fs_fd = inotify_init ();	2610	fs_fd = inotify_init ();
2470		2611
2471	if (fs_fd >= 0)	2612	if (fs_fd >= 0)
2472	{	2613	{
…		…
2500	w->wd = -1;	2641	w->wd = -1;
2501		2642
2502	if (fs_fd >= 0)	2643	if (fs_fd >= 0)
2503	infy_add (EV_A_ w); /* re-add, no matter what */	2644	infy_add (EV_A_ w); /* re-add, no matter what */
2504	else	2645	else
2505	ev_timer_start (EV_A_ &w->timer);	2646	ev_timer_again (EV_A_ &w->timer);
2506	}	2647	}
2507
2508	}	2648	}
2509	}	2649	}
2510		2650
		2651	#endif
		2652
		2653	#ifdef _WIN32
		2654	# define EV_LSTAT(p,b) _stati64 (p, b)
		2655	#else
		2656	# define EV_LSTAT(p,b) lstat (p, b)
2511	#endif	2657	#endif
2512		2658
2513	void	2659	void
2514	ev_stat_stat (EV_P_ ev_stat *w)	2660	ev_stat_stat (EV_P_ ev_stat *w)
2515	{	2661	{
…		…
2542	\|\| w->prev.st_atime != w->attr.st_atime	2688	\|\| w->prev.st_atime != w->attr.st_atime
2543	\|\| w->prev.st_mtime != w->attr.st_mtime	2689	\|\| w->prev.st_mtime != w->attr.st_mtime
2544	\|\| w->prev.st_ctime != w->attr.st_ctime	2690	\|\| w->prev.st_ctime != w->attr.st_ctime
2545	) {	2691	) {
2546	#if EV_USE_INOTIFY	2692	#if EV_USE_INOTIFY
		2693	if (fs_fd >= 0)
		2694	{
2547	infy_del (EV_A_ w);	2695	infy_del (EV_A_ w);
2548	infy_add (EV_A_ w);	2696	infy_add (EV_A_ w);
2549	ev_stat_stat (EV_A_ w); /* avoid race... */	2697	ev_stat_stat (EV_A_ w); /* avoid race... */
		2698	}
2550	#endif	2699	#endif
2551		2700
2552	ev_feed_event (EV_A_ w, EV_STAT);	2701	ev_feed_event (EV_A_ w, EV_STAT);
2553	}	2702	}
2554	}	2703	}
…		…
2557	ev_stat_start (EV_P_ ev_stat *w)	2706	ev_stat_start (EV_P_ ev_stat *w)
2558	{	2707	{
2559	if (expect_false (ev_is_active (w)))	2708	if (expect_false (ev_is_active (w)))
2560	return;	2709	return;
2561		2710
2562	/* since we use memcmp, we need to clear any padding data etc. */
2563	memset (&w->prev, 0, sizeof (ev_statdata));
2564	memset (&w->attr, 0, sizeof (ev_statdata));
2565
2566	ev_stat_stat (EV_A_ w);	2711	ev_stat_stat (EV_A_ w);
2567		2712
		2713	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2568	if (w->interval < MIN_STAT_INTERVAL)	2714	w->interval = MIN_STAT_INTERVAL;
2569	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2570		2715
2571	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2716	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2572	ev_set_priority (&w->timer, ev_priority (w));	2717	ev_set_priority (&w->timer, ev_priority (w));
2573		2718
2574	#if EV_USE_INOTIFY	2719	#if EV_USE_INOTIFY
2575	infy_init (EV_A);	2720	infy_init (EV_A);
2576		2721
2577	if (fs_fd >= 0)	2722	if (fs_fd >= 0)
2578	infy_add (EV_A_ w);	2723	infy_add (EV_A_ w);
2579	else	2724	else
2580	#endif	2725	#endif
2581	ev_timer_start (EV_A_ &w->timer);	2726	ev_timer_again (EV_A_ &w->timer);
2582		2727
2583	ev_start (EV_A_ (W)w, 1);	2728	ev_start (EV_A_ (W)w, 1);
2584		2729
2585	EV_FREQUENT_CHECK;	2730	EV_FREQUENT_CHECK;
2586	}	2731	}
…		…
2756	ev_loop (EV_A_ EVLOOP_NONBLOCK);	2901	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2757	}	2902	}
2758	}	2903	}
2759	}	2904	}
2760		2905
		2906	static void
		2907	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		2908	{
		2909	ev_embed w = (ev_embed )(((char *)fork_w) - offsetof (ev_embed, fork));
		2910
		2911	ev_embed_stop (EV_A_ w);
		2912
		2913	{
		2914	struct ev_loop *loop = w->other;
		2915
		2916	ev_loop_fork (EV_A);
		2917	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2918	}
		2919
		2920	ev_embed_start (EV_A_ w);
		2921	}
		2922
2761	#if 0	2923	#if 0
2762	static void	2924	static void
2763	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	2925	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2764	{	2926	{
2765	ev_idle_stop (EV_A_ idle);	2927	ev_idle_stop (EV_A_ idle);
…		…
2772	if (expect_false (ev_is_active (w)))	2934	if (expect_false (ev_is_active (w)))
2773	return;	2935	return;
2774		2936
2775	{	2937	{
2776	struct ev_loop *loop = w->other;	2938	struct ev_loop *loop = w->other;
2777	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2939	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2778	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	2940	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2779	}	2941	}
2780		2942
2781	EV_FREQUENT_CHECK;	2943	EV_FREQUENT_CHECK;
2782		2944
…		…
2785		2947
2786	ev_prepare_init (&w->prepare, embed_prepare_cb);	2948	ev_prepare_init (&w->prepare, embed_prepare_cb);
2787	ev_set_priority (&w->prepare, EV_MINPRI);	2949	ev_set_priority (&w->prepare, EV_MINPRI);
2788	ev_prepare_start (EV_A_ &w->prepare);	2950	ev_prepare_start (EV_A_ &w->prepare);
2789		2951
		2952	ev_fork_init (&w->fork, embed_fork_cb);
		2953	ev_fork_start (EV_A_ &w->fork);
		2954
2790	/ev_idle_init (&w->idle, e,bed_idle_cb);/	2955	/ev_idle_init (&w->idle, e,bed_idle_cb);/
2791		2956
2792	ev_start (EV_A_ (W)w, 1);	2957	ev_start (EV_A_ (W)w, 1);
2793		2958
2794	EV_FREQUENT_CHECK;	2959	EV_FREQUENT_CHECK;
…		…
2801	if (expect_false (!ev_is_active (w)))	2966	if (expect_false (!ev_is_active (w)))
2802	return;	2967	return;
2803		2968
2804	EV_FREQUENT_CHECK;	2969	EV_FREQUENT_CHECK;
2805		2970
2806	ev_io_stop (EV_A_ &w->io);	2971	ev_io_stop (EV_A_ &w->io);
2807	ev_prepare_stop (EV_A_ &w->prepare);	2972	ev_prepare_stop (EV_A_ &w->prepare);
2808		2973	ev_fork_stop (EV_A_ &w->fork);
2809	ev_stop (EV_A_ (W)w);
2810		2974
2811	EV_FREQUENT_CHECK;	2975	EV_FREQUENT_CHECK;
2812	}	2976	}
2813	#endif	2977	#endif
2814		2978
…		…
2911	once_cb (EV_P_ struct ev_once *once, int revents)	3075	once_cb (EV_P_ struct ev_once *once, int revents)
2912	{	3076	{
2913	void (cb)(int revents, void arg) = once->cb;	3077	void (cb)(int revents, void arg) = once->cb;
2914	void *arg = once->arg;	3078	void *arg = once->arg;
2915		3079
2916	ev_io_stop (EV_A_ &once->io);	3080	ev_io_stop (EV_A_ &once->io);
2917	ev_timer_stop (EV_A_ &once->to);	3081	ev_timer_stop (EV_A_ &once->to);
2918	ev_free (once);	3082	ev_free (once);
2919		3083
2920	cb (revents, arg);	3084	cb (revents, arg);
2921	}	3085	}
2922		3086
2923	static void	3087	static void
2924	once_cb_io (EV_P_ ev_io *w, int revents)	3088	once_cb_io (EV_P_ ev_io *w, int revents)
2925	{	3089	{
2926	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	3090	struct ev_once once = (struct ev_once )(((char *)w) - offsetof (struct ev_once, io));
		3091
		3092	once_cb (EV_A_ once, revents \| ev_clear_pending (EV_A_ &once->to));
2927	}	3093	}
2928		3094
2929	static void	3095	static void
2930	once_cb_to (EV_P_ ev_timer *w, int revents)	3096	once_cb_to (EV_P_ ev_timer *w, int revents)
2931	{	3097	{
2932	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	3098	struct ev_once once = (struct ev_once )(((char *)w) - offsetof (struct ev_once, to));
		3099
		3100	once_cb (EV_A_ once, revents \| ev_clear_pending (EV_A_ &once->io));
2933	}	3101	}
2934		3102
2935	void	3103	void
2936	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	3104	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
2937	{	3105	{

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Comparing libev/ev.c (file contents): Revision 1.249 by root, Wed May 21 23:30:52 2008 UTC vs. Revision 1.278 by root, Tue Jan 6 19:46:56 2009 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.249 by root, Wed May 21 23:30:52 2008 UTC vs.
Revision 1.278 by root, Tue Jan 6 19:46:56 2009 UTC