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

Comparing libev/ev.c (file contents):
Revision 1.248 by root, Wed May 21 23:25:21 2008 UTC vs.
Revision 1.279 by root, Fri Feb 6 20:17:43 2009 UTC

…		…
1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without modifica-	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* tion, are permitted provided that the following conditions are met:	8	* tion, are permitted provided that the following conditions are met:
9	*	9	*
47	# include EV_CONFIG_H	47	# include EV_CONFIG_H
48	# else	48	# else
49	# include "config.h"	49	# include "config.h"
50	# endif	50	# endif
51		51
		52	# if HAVE_CLOCK_SYSCALL
		53	# ifndef EV_USE_CLOCK_SYSCALL
		54	# define EV_USE_CLOCK_SYSCALL 1
		55	# ifndef EV_USE_REALTIME
		56	# define EV_USE_REALTIME 0
		57	# endif
		58	# ifndef EV_USE_MONOTONIC
		59	# define EV_USE_MONOTONIC 1
		60	# endif
		61	# endif
		62	# endif
		63
52	# if HAVE_CLOCK_GETTIME	64	# if HAVE_CLOCK_GETTIME
53	# ifndef EV_USE_MONOTONIC	65	# ifndef EV_USE_MONOTONIC
54	# define EV_USE_MONOTONIC 1	66	# define EV_USE_MONOTONIC 1
55	# endif	67	# endif
56	# ifndef EV_USE_REALTIME	68	# ifndef EV_USE_REALTIME
57	# define EV_USE_REALTIME 1	69	# define EV_USE_REALTIME 0
58	# endif	70	# endif
59	# else	71	# else
60	# ifndef EV_USE_MONOTONIC	72	# ifndef EV_USE_MONOTONIC
61	# define EV_USE_MONOTONIC 0	73	# define EV_USE_MONOTONIC 0
62	# endif	74	# endif
…		…
126	# define EV_USE_EVENTFD 1	138	# define EV_USE_EVENTFD 1
127	# else	139	# else
128	# define EV_USE_EVENTFD 0	140	# define EV_USE_EVENTFD 0
129	# endif	141	# endif
130	# endif	142	# endif
131		143
132	#endif	144	#endif
133		145
134	#include <math.h>	146	#include <math.h>
135	#include <stdlib.h>	147	#include <stdlib.h>
136	#include <fcntl.h>	148	#include <fcntl.h>
…		…
154	#ifndef _WIN32	166	#ifndef _WIN32
155	# include <sys/time.h>	167	# include <sys/time.h>
156	# include <sys/wait.h>	168	# include <sys/wait.h>
157	# include <unistd.h>	169	# include <unistd.h>
158	#else	170	#else
		171	# include <io.h>
159	# define WIN32_LEAN_AND_MEAN	172	# define WIN32_LEAN_AND_MEAN
160	# include <windows.h>	173	# include <windows.h>
161	# ifndef EV_SELECT_IS_WINSOCKET	174	# ifndef EV_SELECT_IS_WINSOCKET
162	# define EV_SELECT_IS_WINSOCKET 1	175	# define EV_SELECT_IS_WINSOCKET 1
163	# endif	176	# endif
164	#endif	177	#endif
165		178
166	/* this block tries to deduce configuration from header-defined symbols and defaults */	179	/* this block tries to deduce configuration from header-defined symbols and defaults */
167		180
		181	#ifndef EV_USE_CLOCK_SYSCALL
		182	# if __linux && __GLIBC__ >= 2
		183	# define EV_USE_CLOCK_SYSCALL 1
		184	# else
		185	# define EV_USE_CLOCK_SYSCALL 0
		186	# endif
		187	#endif
		188
168	#ifndef EV_USE_MONOTONIC	189	#ifndef EV_USE_MONOTONIC
		190	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
		191	# define EV_USE_MONOTONIC 1
		192	# else
169	# define EV_USE_MONOTONIC 0	193	# define EV_USE_MONOTONIC 0
		194	# endif
170	#endif	195	#endif
171		196
172	#ifndef EV_USE_REALTIME	197	#ifndef EV_USE_REALTIME
173	# define EV_USE_REALTIME 0	198	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174	#endif	199	#endif
175		200
176	#ifndef EV_USE_NANOSLEEP	201	#ifndef EV_USE_NANOSLEEP
		202	# if _POSIX_C_SOURCE >= 199309L
		203	# define EV_USE_NANOSLEEP 1
		204	# else
177	# define EV_USE_NANOSLEEP 0	205	# define EV_USE_NANOSLEEP 0
		206	# endif
178	#endif	207	#endif
179		208
180	#ifndef EV_USE_SELECT	209	#ifndef EV_USE_SELECT
181	# define EV_USE_SELECT 1	210	# define EV_USE_SELECT 1
182	#endif	211	#endif
…		…
235	# else	264	# else
236	# define EV_USE_EVENTFD 0	265	# define EV_USE_EVENTFD 0
237	# endif	266	# endif
238	#endif	267	#endif
239		268
		269	#if 0 /* debugging */
		270	# define EV_VERIFY 3
		271	# define EV_USE_4HEAP 1
		272	# define EV_HEAP_CACHE_AT 1
		273	#endif
		274
		275	#ifndef EV_VERIFY
		276	# define EV_VERIFY !EV_MINIMAL
		277	#endif
		278
240	#ifndef EV_USE_4HEAP	279	#ifndef EV_USE_4HEAP
241	# define EV_USE_4HEAP !EV_MINIMAL	280	# define EV_USE_4HEAP !EV_MINIMAL
242	#endif	281	#endif
243		282
244	#ifndef EV_HEAP_CACHE_AT	283	#ifndef EV_HEAP_CACHE_AT
…		…
267	# include <sys/select.h>	306	# include <sys/select.h>
268	# endif	307	# endif
269	#endif	308	#endif
270		309
271	#if EV_USE_INOTIFY	310	#if EV_USE_INOTIFY
		311	# include <sys/utsname.h>
		312	# include <sys/statfs.h>
272	# include <sys/inotify.h>	313	# include <sys/inotify.h>
		314	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
		315	# ifndef IN_DONT_FOLLOW
		316	# undef EV_USE_INOTIFY
		317	# define EV_USE_INOTIFY 0
		318	# endif
273	#endif	319	#endif
274		320
275	#if EV_SELECT_IS_WINSOCKET	321	#if EV_SELECT_IS_WINSOCKET
276	# include <winsock.h>	322	# include <winsock.h>
		323	#endif
		324
		325	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		326	/* which makes programs even slower. might work on other unices, too. */
		327	#if EV_USE_CLOCK_SYSCALL
		328	# include <syscall.h>
		329	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		330	# undef EV_USE_MONOTONIC
		331	# define EV_USE_MONOTONIC 1
277	#endif	332	#endif
278		333
279	#if EV_USE_EVENTFD	334	#if EV_USE_EVENTFD
280	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	335	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
281	# include <stdint.h>	336	# include <stdint.h>
…		…
288	# endif	343	# endif
289	#endif	344	#endif
290		345
291	/**/	346	/**/
292		347
293	/* undefined or zero: no verification done or available */
294	/* 1 or higher: ev_loop_verify function available */
295	/* 2 or higher: ev_loop_verify is called frequently */
296	#define EV_VERIFY 1
297
298	#if EV_VERIFY > 1	348	#if EV_VERIFY >= 3
299	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)	349	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
300	#else	350	#else
301	# define EV_FREQUENT_CHECK do { } while (0)	351	# define EV_FREQUENT_CHECK do { } while (0)
302	#endif	352	#endif
303		353
…		…
347	typedef ev_watcher_time *WT;	397	typedef ev_watcher_time *WT;
348		398
349	#define ev_active(w) ((W)(w))->active	399	#define ev_active(w) ((W)(w))->active
350	#define ev_at(w) ((WT)(w))->at	400	#define ev_at(w) ((WT)(w))->at
351		401
352	#if EV_USE_MONOTONIC	402	#if EV_USE_REALTIME
353	/* 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 */
354	/* 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
355	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? */
356	#endif	410	#endif
357		411
358	#ifdef _WIN32	412	#ifdef _WIN32
359	# include "ev_win32.c"	413	# include "ev_win32.c"
…		…
368	{	422	{
369	syserr_cb = cb;	423	syserr_cb = cb;
370	}	424	}
371		425
372	static void noinline	426	static void noinline
373	syserr (const char *msg)	427	ev_syserr (const char *msg)
374	{	428	{
375	if (!msg)	429	if (!msg)
376	msg = "(libev) system error";	430	msg = "(libev) system error";
377		431
378	if (syserr_cb)	432	if (syserr_cb)
…		…
429	typedef struct	483	typedef struct
430	{	484	{
431	WL head;	485	WL head;
432	unsigned char events;	486	unsigned char events;
433	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
434	#if EV_SELECT_IS_WINSOCKET	493	#if EV_SELECT_IS_WINSOCKET
435	SOCKET handle;	494	SOCKET handle;
436	#endif	495	#endif
437	} ANFD;	496	} ANFD;
438		497
…		…
498		557
499	ev_tstamp	558	ev_tstamp
500	ev_time (void)	559	ev_time (void)
501	{	560	{
502	#if EV_USE_REALTIME	561	#if EV_USE_REALTIME
		562	if (expect_true (have_realtime))
		563	{
503	struct timespec ts;	564	struct timespec ts;
504	clock_gettime (CLOCK_REALTIME, &ts);	565	clock_gettime (CLOCK_REALTIME, &ts);
505	return ts.tv_sec + ts.tv_nsec * 1e-9;	566	return ts.tv_sec + ts.tv_nsec * 1e-9;
506	#else	567	}
		568	#endif
		569
507	struct timeval tv;	570	struct timeval tv;
508	gettimeofday (&tv, 0);	571	gettimeofday (&tv, 0);
509	return tv.tv_sec + tv.tv_usec * 1e-6;	572	return tv.tv_sec + tv.tv_usec * 1e-6;
510	#endif
511	}	573	}
512		574
513	ev_tstamp inline_size	575	ev_tstamp inline_size
514	get_clock (void)	576	get_clock (void)
515	{	577	{
…		…
551	struct timeval tv;	613	struct timeval tv;
552		614
553	tv.tv_sec = (time_t)delay;	615	tv.tv_sec = (time_t)delay;
554	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	616	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
555		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 */
556	select (0, 0, 0, 0, &tv);	621	select (0, 0, 0, 0, &tv);
557	#endif	622	#endif
558	}	623	}
559	}	624	}
560		625
…		…
587	array_realloc (int elem, void base, int cur, int cnt)	652	array_realloc (int elem, void base, int cur, int cnt)
588	{	653	{
589	cur = array_nextsize (elem, cur, cnt);	654	cur = array_nextsize (elem, cur, cnt);
590	return ev_realloc (base, elem * *cur);	655	return ev_realloc (base, elem * *cur);
591	}	656	}
		657
		658	#define array_init_zero(base,count) \
		659	memset ((void )(base), 0, sizeof ((base)) * (count))
592		660
593	#define array_needsize(type,base,cur,cnt,init) \	661	#define array_needsize(type,base,cur,cnt,init) \
594	if (expect_false ((cnt) > (cur))) \	662	if (expect_false ((cnt) > (cur))) \
595	{ \	663	{ \
596	int ocur_ = (cur); \	664	int ocur_ = (cur); \
…		…
640	ev_feed_event (EV_A_ events [i], type);	708	ev_feed_event (EV_A_ events [i], type);
641	}	709	}
642		710
643	/*****************************************************************************/	711	/*****************************************************************************/
644		712
645	void inline_size
646	anfds_init (ANFD *base, int count)
647	{
648	while (count--)
649	{
650	base->head = 0;
651	base->events = EV_NONE;
652	base->reify = 0;
653
654	++base;
655	}
656	}
657
658	void inline_speed	713	void inline_speed
659	fd_event (EV_P_ int fd, int revents)	714	fd_event (EV_P_ int fd, int revents)
660	{	715	{
661	ANFD *anfd = anfds + fd;	716	ANFD *anfd = anfds + fd;
662	ev_io *w;	717	ev_io *w;
…		…
694	events \|= (unsigned char)w->events;	749	events \|= (unsigned char)w->events;
695		750
696	#if EV_SELECT_IS_WINSOCKET	751	#if EV_SELECT_IS_WINSOCKET
697	if (events)	752	if (events)
698	{	753	{
699	unsigned long argp;	754	unsigned long arg;
700	#ifdef EV_FD_TO_WIN32_HANDLE	755	#ifdef EV_FD_TO_WIN32_HANDLE
701	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	756	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
702	#else	757	#else
703	anfd->handle = _get_osfhandle (fd);	758	anfd->handle = _get_osfhandle (fd);
704	#endif	759	#endif
705	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));
706	}	761	}
707	#endif	762	#endif
708		763
709	{	764	{
710	unsigned char o_events = anfd->events;	765	unsigned char o_events = anfd->events;
…		…
763	{	818	{
764	int fd;	819	int fd;
765		820
766	for (fd = 0; fd < anfdmax; ++fd)	821	for (fd = 0; fd < anfdmax; ++fd)
767	if (anfds [fd].events)	822	if (anfds [fd].events)
768	if (!fd_valid (fd) == -1 && errno == EBADF)	823	if (!fd_valid (fd) && errno == EBADF)
769	fd_kill (EV_A_ fd);	824	fd_kill (EV_A_ fd);
770	}	825	}
771		826
772	/* 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 */
773	static void noinline	828	static void noinline
…		…
791		846
792	for (fd = 0; fd < anfdmax; ++fd)	847	for (fd = 0; fd < anfdmax; ++fd)
793	if (anfds [fd].events)	848	if (anfds [fd].events)
794	{	849	{
795	anfds [fd].events = 0;	850	anfds [fd].events = 0;
		851	anfds [fd].emask = 0;
796	fd_change (EV_A_ fd, EV_IOFDSET \| 1);	852	fd_change (EV_A_ fd, EV_IOFDSET \| 1);
797	}	853	}
798	}	854	}
799		855
800	/*****************************************************************************/	856	/*****************************************************************************/
…		…
932	/* rebuild the heap: this function is used only once and executed rarely */	988	/* rebuild the heap: this function is used only once and executed rarely */
933	void inline_size	989	void inline_size
934	reheap (ANHE *heap, int N)	990	reheap (ANHE *heap, int N)
935	{	991	{
936	int i;	992	int i;
		993
937	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */	994	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
938	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */	995	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
939	for (i = 0; i < N; ++i)	996	for (i = 0; i < N; ++i)
940	upheap (heap, i + HEAP0);	997	upheap (heap, i + HEAP0);
941	}	998	}
942		999
943	#if EV_VERIFY
944	static void
945	checkheap (ANHE *heap, int N)
946	{
947	int i;
948
949	for (i = HEAP0; i < N + HEAP0; ++i)
950	{
951	assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
952	assert (("heap condition violated", i == HEAP0 \|\| ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
953	assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
954	}
955	}
956	#endif
957
958	/*****************************************************************************/	1000	/*****************************************************************************/
959		1001
960	typedef struct	1002	typedef struct
961	{	1003	{
962	WL head;	1004	WL head;
…		…
966	static ANSIG *signals;	1008	static ANSIG *signals;
967	static int signalmax;	1009	static int signalmax;
968		1010
969	static EV_ATOMIC_T gotsig;	1011	static EV_ATOMIC_T gotsig;
970		1012
971	void inline_size
972	signals_init (ANSIG *base, int count)
973	{
974	while (count--)
975	{
976	base->head = 0;
977	base->gotsig = 0;
978
979	++base;
980	}
981	}
982
983	/*****************************************************************************/	1013	/*****************************************************************************/
984		1014
985	void inline_speed	1015	void inline_speed
986	fd_intern (int fd)	1016	fd_intern (int fd)
987	{	1017	{
988	#ifdef _WIN32	1018	#ifdef _WIN32
989	int arg = 1;	1019	unsigned long arg = 1;
990	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1020	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
991	#else	1021	#else
992	fcntl (fd, F_SETFD, FD_CLOEXEC);	1022	fcntl (fd, F_SETFD, FD_CLOEXEC);
993	fcntl (fd, F_SETFL, O_NONBLOCK);	1023	fcntl (fd, F_SETFL, O_NONBLOCK);
994	#endif	1024	#endif
…		…
1008	}	1038	}
1009	else	1039	else
1010	#endif	1040	#endif
1011	{	1041	{
1012	while (pipe (evpipe))	1042	while (pipe (evpipe))
1013	syserr ("(libev) error creating signal/async pipe");	1043	ev_syserr ("(libev) error creating signal/async pipe");
1014		1044
1015	fd_intern (evpipe [0]);	1045	fd_intern (evpipe [0]);
1016	fd_intern (evpipe [1]);	1046	fd_intern (evpipe [1]);
1017	ev_io_set (&pipeev, evpipe [0], EV_READ);	1047	ev_io_set (&pipeev, evpipe [0], EV_READ);
1018	}	1048	}
…		…
1108	ev_feed_signal_event (EV_P_ int signum)	1138	ev_feed_signal_event (EV_P_ int signum)
1109	{	1139	{
1110	WL w;	1140	WL w;
1111		1141
1112	#if EV_MULTIPLICITY	1142	#if EV_MULTIPLICITY
1113	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));
1114	#endif	1144	#endif
1115		1145
1116	--signum;	1146	--signum;
1117		1147
1118	if (signum < 0 \|\| signum >= signalmax)	1148	if (signum < 0 \|\| signum >= signalmax)
…		…
1247	/* kqueue is borked on everything but netbsd apparently */	1277	/* kqueue is borked on everything but netbsd apparently */
1248	/* 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 */
1249	flags &= ~EVBACKEND_KQUEUE;	1279	flags &= ~EVBACKEND_KQUEUE;
1250	#endif	1280	#endif
1251	#ifdef __APPLE__	1281	#ifdef __APPLE__
1252	// flags &= ~EVBACKEND_KQUEUE; for documentation	1282	/* only select works correctly on that "unix-certified" platform */
1253	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 */
1254	#endif	1285	#endif
1255		1286
1256	return flags;	1287	return flags;
1257	}	1288	}
1258		1289
…		…
1295	static void noinline	1326	static void noinline
1296	loop_init (EV_P_ unsigned int flags)	1327	loop_init (EV_P_ unsigned int flags)
1297	{	1328	{
1298	if (!backend)	1329	if (!backend)
1299	{	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
1300	#if EV_USE_MONOTONIC	1341	#if EV_USE_MONOTONIC
		1342	if (!have_monotonic)
1301	{	1343	{
1302	struct timespec ts;	1344	struct timespec ts;
		1345
1303	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1346	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1304	have_monotonic = 1;	1347	have_monotonic = 1;
1305	}	1348	}
1306	#endif	1349	#endif
1307		1350
1308	ev_rt_now = ev_time ();	1351	ev_rt_now = ev_time ();
1309	mn_now = get_clock ();	1352	mn_now = get_clock ();
1310	now_floor = mn_now;	1353	now_floor = mn_now;
…		…
1478		1521
1479	postfork = 0;	1522	postfork = 0;
1480	}	1523	}
1481		1524
1482	#if EV_MULTIPLICITY	1525	#if EV_MULTIPLICITY
		1526
1483	struct ev_loop *	1527	struct ev_loop *
1484	ev_loop_new (unsigned int flags)	1528	ev_loop_new (unsigned int flags)
1485	{	1529	{
1486	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));	1530	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
1487		1531
…		…
1507	{	1551	{
1508	postfork = 1; /* must be in line with ev_default_fork */	1552	postfork = 1; /* must be in line with ev_default_fork */
1509	}	1553	}
1510		1554
1511	#if EV_VERIFY	1555	#if EV_VERIFY
1512	static void	1556	static void noinline
		1557	verify_watcher (EV_P_ W w)
		1558	{
		1559	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1560
		1561	if (w->pending)
		1562	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1563	}
		1564
		1565	static void noinline
		1566	verify_heap (EV_P_ ANHE *heap, int N)
		1567	{
		1568	int i;
		1569
		1570	for (i = HEAP0; i < N + HEAP0; ++i)
		1571	{
		1572	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1573	assert (("libev: heap condition violated", i == HEAP0 \|\| ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1574	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1575
		1576	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1577	}
		1578	}
		1579
		1580	static void noinline
1513	array_check (W **ws, int cnt)	1581	array_verify (EV_P_ W *ws, int cnt)
1514	{	1582	{
1515	while (cnt--)	1583	while (cnt--)
		1584	{
1516	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));	1585	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1586	verify_watcher (EV_A_ ws [cnt]);
		1587	}
1517	}	1588	}
		1589	#endif
1518		1590
1519	static void	1591	void
1520	ev_loop_verify (EV_P)	1592	ev_loop_verify (EV_P)
1521	{	1593	{
		1594	#if EV_VERIFY
1522	int i;	1595	int i;
		1596	WL w;
1523		1597
		1598	assert (activecnt >= -1);
		1599
		1600	assert (fdchangemax >= fdchangecnt);
		1601	for (i = 0; i < fdchangecnt; ++i)
		1602	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1603
		1604	assert (anfdmax >= 0);
		1605	for (i = 0; i < anfdmax; ++i)
		1606	for (w = anfds [i].head; w; w = w->next)
		1607	{
		1608	verify_watcher (EV_A_ (W)w);
		1609	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1610	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1611	}
		1612
		1613	assert (timermax >= timercnt);
1524	checkheap (timers, timercnt);	1614	verify_heap (EV_A_ timers, timercnt);
		1615
1525	#if EV_PERIODIC_ENABLE	1616	#if EV_PERIODIC_ENABLE
		1617	assert (periodicmax >= periodiccnt);
1526	checkheap (periodics, periodiccnt);	1618	verify_heap (EV_A_ periodics, periodiccnt);
1527	#endif	1619	#endif
1528		1620
		1621	for (i = NUMPRI; i--; )
		1622	{
		1623	assert (pendingmax [i] >= pendingcnt [i]);
1529	#if EV_IDLE_ENABLE	1624	#if EV_IDLE_ENABLE
1530	for (i = NUMPRI; i--; )	1625	assert (idleall >= 0);
		1626	assert (idlemax [i] >= idlecnt [i]);
1531	array_check ((W **)idles [i], idlecnt [i]);	1627	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1532	#endif	1628	#endif
		1629	}
		1630
1533	#if EV_FORK_ENABLE	1631	#if EV_FORK_ENABLE
		1632	assert (forkmax >= forkcnt);
1534	array_check ((W **)forks, forkcnt);	1633	array_verify (EV_A_ (W *)forks, forkcnt);
1535	#endif	1634	#endif
1536	array_check ((W **)prepares, preparecnt);	1635
1537	array_check ((W **)checks, checkcnt);
1538	#if EV_ASYNC_ENABLE	1636	#if EV_ASYNC_ENABLE
		1637	assert (asyncmax >= asynccnt);
1539	array_check ((W **)asyncs, asynccnt);	1638	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1639	#endif
		1640
		1641	assert (preparemax >= preparecnt);
		1642	array_verify (EV_A_ (W *)prepares, preparecnt);
		1643
		1644	assert (checkmax >= checkcnt);
		1645	array_verify (EV_A_ (W *)checks, checkcnt);
		1646
		1647	# if 0
		1648	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
		1649	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1540	#endif	1650	# endif
1541	}
1542	#endif	1651	#endif
		1652	}
1543		1653
1544	#endif	1654	#endif /* multiplicity */
1545		1655
1546	#if EV_MULTIPLICITY	1656	#if EV_MULTIPLICITY
1547	struct ev_loop *	1657	struct ev_loop *
1548	ev_default_loop_init (unsigned int flags)	1658	ev_default_loop_init (unsigned int flags)
1549	#else	1659	#else
…		…
1582	{	1692	{
1583	#if EV_MULTIPLICITY	1693	#if EV_MULTIPLICITY
1584	struct ev_loop *loop = ev_default_loop_ptr;	1694	struct ev_loop *loop = ev_default_loop_ptr;
1585	#endif	1695	#endif
1586		1696
		1697	ev_default_loop_ptr = 0;
		1698
1587	#ifndef _WIN32	1699	#ifndef _WIN32
1588	ev_ref (EV_A); /* child watcher */	1700	ev_ref (EV_A); /* child watcher */
1589	ev_signal_stop (EV_A_ &childev);	1701	ev_signal_stop (EV_A_ &childev);
1590	#endif	1702	#endif
1591		1703
…		…
1597	{	1709	{
1598	#if EV_MULTIPLICITY	1710	#if EV_MULTIPLICITY
1599	struct ev_loop *loop = ev_default_loop_ptr;	1711	struct ev_loop *loop = ev_default_loop_ptr;
1600	#endif	1712	#endif
1601		1713
1602	if (backend)
1603	postfork = 1; /* must be in line with ev_loop_fork */	1714	postfork = 1; /* must be in line with ev_loop_fork */
1604	}	1715	}
1605		1716
1606	/*****************************************************************************/	1717	/*****************************************************************************/
1607		1718
1608	void	1719	void
…		…
1613		1724
1614	void inline_speed	1725	void inline_speed
1615	call_pending (EV_P)	1726	call_pending (EV_P)
1616	{	1727	{
1617	int pri;	1728	int pri;
1618
1619	EV_FREQUENT_CHECK;
1620		1729
1621	for (pri = NUMPRI; pri--; )	1730	for (pri = NUMPRI; pri--; )
1622	while (pendingcnt [pri])	1731	while (pendingcnt [pri])
1623	{	1732	{
1624	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1733	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1625		1734
1626	if (expect_true (p->w))	1735	if (expect_true (p->w))
1627	{	1736	{
1628	/assert (("non-pending watcher on pending list", p->w->pending));/	1737	/assert (("libev: non-pending watcher on pending list", p->w->pending));/
1629		1738
1630	p->w->pending = 0;	1739	p->w->pending = 0;
1631	EV_CB_INVOKE (p->w, p->events);	1740	EV_CB_INVOKE (p->w, p->events);
		1741	EV_FREQUENT_CHECK;
1632	}	1742	}
1633	}	1743	}
1634
1635	EV_FREQUENT_CHECK;
1636	}	1744	}
1637		1745
1638	#if EV_IDLE_ENABLE	1746	#if EV_IDLE_ENABLE
1639	void inline_size	1747	void inline_size
1640	idle_reify (EV_P)	1748	idle_reify (EV_P)
…		…
1665		1773
1666	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	1774	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1667	{	1775	{
1668	ev_timer w = (ev_timer )ANHE_w (timers [HEAP0]);	1776	ev_timer w = (ev_timer )ANHE_w (timers [HEAP0]);
1669		1777
1670	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/	1778	/assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));/
1671		1779
1672	/* first reschedule or stop timer */	1780	/* first reschedule or stop timer */
1673	if (w->repeat)	1781	if (w->repeat)
1674	{	1782	{
1675	ev_at (w) += w->repeat;	1783	ev_at (w) += w->repeat;
1676	if (ev_at (w) < mn_now)	1784	if (ev_at (w) < mn_now)
1677	ev_at (w) = mn_now;	1785	ev_at (w) = mn_now;
1678		1786
1679	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.));
1680		1788
1681	ANHE_at_cache (timers [HEAP0]);	1789	ANHE_at_cache (timers [HEAP0]);
1682	downheap (timers, timercnt, HEAP0);	1790	downheap (timers, timercnt, HEAP0);
1683	}	1791	}
1684	else	1792	else
…		…
1692	#if EV_PERIODIC_ENABLE	1800	#if EV_PERIODIC_ENABLE
1693	void inline_size	1801	void inline_size
1694	periodics_reify (EV_P)	1802	periodics_reify (EV_P)
1695	{	1803	{
1696	EV_FREQUENT_CHECK;	1804	EV_FREQUENT_CHECK;
		1805
1697	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	1806	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1698	{	1807	{
1699	ev_periodic w = (ev_periodic )ANHE_w (periodics [HEAP0]);	1808	ev_periodic w = (ev_periodic )ANHE_w (periodics [HEAP0]);
1700		1809
1701	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/	1810	/assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));/
1702		1811
1703	/* first reschedule or stop timer */	1812	/* first reschedule or stop timer */
1704	if (w->reschedule_cb)	1813	if (w->reschedule_cb)
1705	{	1814	{
1706	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1815	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1707		1816
1708	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));
1709		1818
1710	ANHE_at_cache (periodics [HEAP0]);	1819	ANHE_at_cache (periodics [HEAP0]);
1711	downheap (periodics, periodiccnt, HEAP0);	1820	downheap (periodics, periodiccnt, HEAP0);
1712	EV_FREQUENT_CHECK;
1713	}	1821	}
1714	else if (w->interval)	1822	else if (w->interval)
1715	{	1823	{
1716	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	1824	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1717	/* if next trigger time is not sufficiently in the future, put it there */	1825	/* if next trigger time is not sufficiently in the future, put it there */
…		…
1842	ev_unref (EV_P)	1950	ev_unref (EV_P)
1843	{	1951	{
1844	--activecnt;	1952	--activecnt;
1845	}	1953	}
1846		1954
		1955	void
		1956	ev_now_update (EV_P)
		1957	{
		1958	time_update (EV_A_ 1e100);
		1959	}
		1960
1847	static int loop_done;	1961	static int loop_done;
1848		1962
1849	void	1963	void
1850	ev_loop (EV_P_ int flags)	1964	ev_loop (EV_P_ int flags)
1851	{	1965	{
…		…
1853		1967
1854	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	1968	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1855		1969
1856	do	1970	do
1857	{	1971	{
		1972	#if EV_VERIFY >= 2
		1973	ev_loop_verify (EV_A);
		1974	#endif
		1975
1858	#ifndef _WIN32	1976	#ifndef _WIN32
1859	if (expect_false (curpid)) /* penalise the forking check even more */	1977	if (expect_false (curpid)) /* penalise the forking check even more */
1860	if (expect_false (getpid () != curpid))	1978	if (expect_false (getpid () != curpid))
1861	{	1979	{
1862	curpid = getpid ();	1980	curpid = getpid ();
…		…
2055	int fd = w->fd;	2173	int fd = w->fd;
2056		2174
2057	if (expect_false (ev_is_active (w)))	2175	if (expect_false (ev_is_active (w)))
2058	return;	2176	return;
2059		2177
2060	assert (("ev_io_start called with negative fd", fd >= 0));	2178	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2179	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET \| EV_READ \| EV_WRITE))));
2061		2180
2062	EV_FREQUENT_CHECK;	2181	EV_FREQUENT_CHECK;
2063		2182
2064	ev_start (EV_A_ (W)w, 1);	2183	ev_start (EV_A_ (W)w, 1);
2065	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2184	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2066	wlist_add (&anfds[fd].head, (WL)w);	2185	wlist_add (&anfds[fd].head, (WL)w);
2067		2186
2068	fd_change (EV_A_ fd, w->events & EV_IOFDSET \| 1);	2187	fd_change (EV_A_ fd, w->events & EV_IOFDSET \| 1);
2069	w->events &= ~EV_IOFDSET;	2188	w->events &= ~EV_IOFDSET;
2070		2189
…		…
2076	{	2195	{
2077	clear_pending (EV_A_ (W)w);	2196	clear_pending (EV_A_ (W)w);
2078	if (expect_false (!ev_is_active (w)))	2197	if (expect_false (!ev_is_active (w)))
2079	return;	2198	return;
2080		2199
2081	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2200	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2082		2201
2083	EV_FREQUENT_CHECK;	2202	EV_FREQUENT_CHECK;
2084		2203
2085	wlist_del (&anfds[w->fd].head, (WL)w);	2204	wlist_del (&anfds[w->fd].head, (WL)w);
2086	ev_stop (EV_A_ (W)w);	2205	ev_stop (EV_A_ (W)w);
…		…
2096	if (expect_false (ev_is_active (w)))	2215	if (expect_false (ev_is_active (w)))
2097	return;	2216	return;
2098		2217
2099	ev_at (w) += mn_now;	2218	ev_at (w) += mn_now;
2100		2219
2101	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2220	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2102		2221
2103	EV_FREQUENT_CHECK;	2222	EV_FREQUENT_CHECK;
2104		2223
2105	++timercnt;	2224	++timercnt;
2106	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);	2225	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
…		…
2109	ANHE_at_cache (timers [ev_active (w)]);	2228	ANHE_at_cache (timers [ev_active (w)]);
2110	upheap (timers, ev_active (w));	2229	upheap (timers, ev_active (w));
2111		2230
2112	EV_FREQUENT_CHECK;	2231	EV_FREQUENT_CHECK;
2113		2232
2114	/assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));/	2233	/assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));/
2115	}	2234	}
2116		2235
2117	void noinline	2236	void noinline
2118	ev_timer_stop (EV_P_ ev_timer *w)	2237	ev_timer_stop (EV_P_ ev_timer *w)
2119	{	2238	{
…		…
2124	EV_FREQUENT_CHECK;	2243	EV_FREQUENT_CHECK;
2125		2244
2126	{	2245	{
2127	int active = ev_active (w);	2246	int active = ev_active (w);
2128		2247
2129	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2248	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2130		2249
2131	--timercnt;	2250	--timercnt;
2132		2251
2133	if (expect_true (active < timercnt + HEAP0))	2252	if (expect_true (active < timercnt + HEAP0))
2134	{	2253	{
…		…
2178		2297
2179	if (w->reschedule_cb)	2298	if (w->reschedule_cb)
2180	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2299	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2181	else if (w->interval)	2300	else if (w->interval)
2182	{	2301	{
2183	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2302	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2184	/* this formula differs from the one in periodic_reify because we do not always round up */	2303	/* this formula differs from the one in periodic_reify because we do not always round up */
2185	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2304	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2186	}	2305	}
2187	else	2306	else
2188	ev_at (w) = w->offset;	2307	ev_at (w) = w->offset;
…		…
2196	ANHE_at_cache (periodics [ev_active (w)]);	2315	ANHE_at_cache (periodics [ev_active (w)]);
2197	upheap (periodics, ev_active (w));	2316	upheap (periodics, ev_active (w));
2198		2317
2199	EV_FREQUENT_CHECK;	2318	EV_FREQUENT_CHECK;
2200		2319
2201	/assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));/	2320	/assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));/
2202	}	2321	}
2203		2322
2204	void noinline	2323	void noinline
2205	ev_periodic_stop (EV_P_ ev_periodic *w)	2324	ev_periodic_stop (EV_P_ ev_periodic *w)
2206	{	2325	{
…		…
2211	EV_FREQUENT_CHECK;	2330	EV_FREQUENT_CHECK;
2212		2331
2213	{	2332	{
2214	int active = ev_active (w);	2333	int active = ev_active (w);
2215		2334
2216	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2335	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2217		2336
2218	--periodiccnt;	2337	--periodiccnt;
2219		2338
2220	if (expect_true (active < periodiccnt + HEAP0))	2339	if (expect_true (active < periodiccnt + HEAP0))
2221	{	2340	{
…		…
2244		2363
2245	void noinline	2364	void noinline
2246	ev_signal_start (EV_P_ ev_signal *w)	2365	ev_signal_start (EV_P_ ev_signal *w)
2247	{	2366	{
2248	#if EV_MULTIPLICITY	2367	#if EV_MULTIPLICITY
2249	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2368	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2250	#endif	2369	#endif
2251	if (expect_false (ev_is_active (w)))	2370	if (expect_false (ev_is_active (w)))
2252	return;	2371	return;
2253		2372
2254	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2373	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2255		2374
2256	evpipe_init (EV_A);	2375	evpipe_init (EV_A);
2257		2376
2258	EV_FREQUENT_CHECK;	2377	EV_FREQUENT_CHECK;
2259		2378
…		…
2262	sigset_t full, prev;	2381	sigset_t full, prev;
2263	sigfillset (&full);	2382	sigfillset (&full);
2264	sigprocmask (SIG_SETMASK, &full, &prev);	2383	sigprocmask (SIG_SETMASK, &full, &prev);
2265	#endif	2384	#endif
2266		2385
2267	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2386	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2268		2387
2269	#ifndef _WIN32	2388	#ifndef _WIN32
2270	sigprocmask (SIG_SETMASK, &prev, 0);	2389	sigprocmask (SIG_SETMASK, &prev, 0);
2271	#endif	2390	#endif
2272	}	2391	}
…		…
2310		2429
2311	void	2430	void
2312	ev_child_start (EV_P_ ev_child *w)	2431	ev_child_start (EV_P_ ev_child *w)
2313	{	2432	{
2314	#if EV_MULTIPLICITY	2433	#if EV_MULTIPLICITY
2315	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2434	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2316	#endif	2435	#endif
2317	if (expect_false (ev_is_active (w)))	2436	if (expect_false (ev_is_active (w)))
2318	return;	2437	return;
2319		2438
2320	EV_FREQUENT_CHECK;	2439	EV_FREQUENT_CHECK;
…		…
2345	# ifdef _WIN32	2464	# ifdef _WIN32
2346	# undef lstat	2465	# undef lstat
2347	# define lstat(a,b) _stati64 (a,b)	2466	# define lstat(a,b) _stati64 (a,b)
2348	# endif	2467	# endif
2349		2468
2350	#define DEF_STAT_INTERVAL 5.0074891	2469	#define DEF_STAT_INTERVAL 5.0074891
		2470	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2351	#define MIN_STAT_INTERVAL 0.1074891	2471	#define MIN_STAT_INTERVAL 0.1074891
2352		2472
2353	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2473	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2354		2474
2355	#if EV_USE_INOTIFY	2475	#if EV_USE_INOTIFY
2356	# define EV_INOTIFY_BUFSIZE 8192	2476	# define EV_INOTIFY_BUFSIZE 8192
…		…
2360	{	2480	{
2361	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB \| IN_DELETE_SELF \| IN_MOVE_SELF \| IN_MODIFY \| IN_DONT_FOLLOW \| IN_MASK_ADD);	2481	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB \| IN_DELETE_SELF \| IN_MOVE_SELF \| IN_MODIFY \| IN_DONT_FOLLOW \| IN_MASK_ADD);
2362		2482
2363	if (w->wd < 0)	2483	if (w->wd < 0)
2364	{	2484	{
		2485	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2365	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2486	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2366		2487
2367	/* monitor some parent directory for speedup hints */	2488	/* monitor some parent directory for speedup hints */
2368	/* note that exceeding the hardcoded limit is not a correctness issue, */	2489	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2369	/* but an efficiency issue only */	2490	/* but an efficiency issue only */
2370	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)	2491	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)
2371	{	2492	{
2372	char path [4096];	2493	char path [4096];
2373	strcpy (path, w->path);	2494	strcpy (path, w->path);
…		…
2377	int mask = IN_MASK_ADD \| IN_DELETE_SELF \| IN_MOVE_SELF	2498	int mask = IN_MASK_ADD \| IN_DELETE_SELF \| IN_MOVE_SELF
2378	\| (errno == EACCES ? IN_ATTRIB : IN_CREATE \| IN_MOVED_TO);	2499	\| (errno == EACCES ? IN_ATTRIB : IN_CREATE \| IN_MOVED_TO);
2379		2500
2380	char *pend = strrchr (path, '/');	2501	char *pend = strrchr (path, '/');
2381		2502
2382	if (!pend)	2503	if (!pend \|\| pend == path)
2383	break; /* whoops, no '/', complain to your admin */	2504	break;
2384		2505
2385	*pend = 0;	2506	*pend = 0;
2386	w->wd = inotify_add_watch (fs_fd, path, mask);	2507	w->wd = inotify_add_watch (fs_fd, path, mask);
2387	}	2508	}
2388	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));	2509	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));
2389	}	2510	}
2390	}	2511	}
2391	else
2392	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2393		2512
2394	if (w->wd >= 0)	2513	if (w->wd >= 0)
		2514	{
2395	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2515	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2516
		2517	/* now local changes will be tracked by inotify, but remote changes won't */
		2518	/* unless the filesystem it known to be local, we therefore still poll */
		2519	/* also do poll on <2.6.25, but with normal frequency */
		2520	struct statfs sfs;
		2521
		2522	if (fs_2625 && !statfs (w->path, &sfs))
		2523	if (sfs.f_type == 0x1373 /* devfs */
		2524	\|\| sfs.f_type == 0xEF53 /* ext2/3 */
		2525	\|\| sfs.f_type == 0x3153464a /* jfs */
		2526	\|\| sfs.f_type == 0x52654973 /* reiser3 */
		2527	\|\| sfs.f_type == 0x01021994 /* tempfs */
		2528	\|\| sfs.f_type == 0x58465342 /* xfs */)
		2529	return;
		2530
		2531	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2532	ev_timer_again (EV_A_ &w->timer);
		2533	}
2396	}	2534	}
2397		2535
2398	static void noinline	2536	static void noinline
2399	infy_del (EV_P_ ev_stat *w)	2537	infy_del (EV_P_ ev_stat *w)
2400	{	2538	{
…		…
2414		2552
2415	static void noinline	2553	static void noinline
2416	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2554	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2417	{	2555	{
2418	if (slot < 0)	2556	if (slot < 0)
2419	/* overflow, need to check for all hahs slots */	2557	/* overflow, need to check for all hash slots */
2420	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2558	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2421	infy_wd (EV_A_ slot, wd, ev);	2559	infy_wd (EV_A_ slot, wd, ev);
2422	else	2560	else
2423	{	2561	{
2424	WL w_;	2562	WL w_;
…		…
2430		2568
2431	if (w->wd == wd \|\| wd == -1)	2569	if (w->wd == wd \|\| wd == -1)
2432	{	2570	{
2433	if (ev->mask & (IN_IGNORED \| IN_UNMOUNT \| IN_DELETE_SELF))	2571	if (ev->mask & (IN_IGNORED \| IN_UNMOUNT \| IN_DELETE_SELF))
2434	{	2572	{
		2573	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2435	w->wd = -1;	2574	w->wd = -1;
2436	infy_add (EV_A_ w); /* re-add, no matter what */	2575	infy_add (EV_A_ w); /* re-add, no matter what */
2437	}	2576	}
2438		2577
2439	stat_timer_cb (EV_A_ &w->timer, 0);	2578	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2453	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2592	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2454	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2593	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2455	}	2594	}
2456		2595
2457	void inline_size	2596	void inline_size
		2597	check_2625 (EV_P)
		2598	{
		2599	/* kernels < 2.6.25 are borked
		2600	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2601	*/
		2602	struct utsname buf;
		2603	int major, minor, micro;
		2604
		2605	if (uname (&buf))
		2606	return;
		2607
		2608	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2609	return;
		2610
		2611	if (major < 2
		2612	\|\| (major == 2 && minor < 6)
		2613	\|\| (major == 2 && minor == 6 && micro < 25))
		2614	return;
		2615
		2616	fs_2625 = 1;
		2617	}
		2618
		2619	void inline_size
2458	infy_init (EV_P)	2620	infy_init (EV_P)
2459	{	2621	{
2460	if (fs_fd != -2)	2622	if (fs_fd != -2)
2461	return;	2623	return;
		2624
		2625	fs_fd = -1;
		2626
		2627	check_2625 (EV_A);
2462		2628
2463	fs_fd = inotify_init ();	2629	fs_fd = inotify_init ();
2464		2630
2465	if (fs_fd >= 0)	2631	if (fs_fd >= 0)
2466	{	2632	{
…		…
2494	w->wd = -1;	2660	w->wd = -1;
2495		2661
2496	if (fs_fd >= 0)	2662	if (fs_fd >= 0)
2497	infy_add (EV_A_ w); /* re-add, no matter what */	2663	infy_add (EV_A_ w); /* re-add, no matter what */
2498	else	2664	else
2499	ev_timer_start (EV_A_ &w->timer);	2665	ev_timer_again (EV_A_ &w->timer);
2500	}	2666	}
2501
2502	}	2667	}
2503	}	2668	}
2504		2669
		2670	#endif
		2671
		2672	#ifdef _WIN32
		2673	# define EV_LSTAT(p,b) _stati64 (p, b)
		2674	#else
		2675	# define EV_LSTAT(p,b) lstat (p, b)
2505	#endif	2676	#endif
2506		2677
2507	void	2678	void
2508	ev_stat_stat (EV_P_ ev_stat *w)	2679	ev_stat_stat (EV_P_ ev_stat *w)
2509	{	2680	{
…		…
2536	\|\| w->prev.st_atime != w->attr.st_atime	2707	\|\| w->prev.st_atime != w->attr.st_atime
2537	\|\| w->prev.st_mtime != w->attr.st_mtime	2708	\|\| w->prev.st_mtime != w->attr.st_mtime
2538	\|\| w->prev.st_ctime != w->attr.st_ctime	2709	\|\| w->prev.st_ctime != w->attr.st_ctime
2539	) {	2710	) {
2540	#if EV_USE_INOTIFY	2711	#if EV_USE_INOTIFY
		2712	if (fs_fd >= 0)
		2713	{
2541	infy_del (EV_A_ w);	2714	infy_del (EV_A_ w);
2542	infy_add (EV_A_ w);	2715	infy_add (EV_A_ w);
2543	ev_stat_stat (EV_A_ w); /* avoid race... */	2716	ev_stat_stat (EV_A_ w); /* avoid race... */
		2717	}
2544	#endif	2718	#endif
2545		2719
2546	ev_feed_event (EV_A_ w, EV_STAT);	2720	ev_feed_event (EV_A_ w, EV_STAT);
2547	}	2721	}
2548	}	2722	}
…		…
2551	ev_stat_start (EV_P_ ev_stat *w)	2725	ev_stat_start (EV_P_ ev_stat *w)
2552	{	2726	{
2553	if (expect_false (ev_is_active (w)))	2727	if (expect_false (ev_is_active (w)))
2554	return;	2728	return;
2555		2729
2556	/* since we use memcmp, we need to clear any padding data etc. */
2557	memset (&w->prev, 0, sizeof (ev_statdata));
2558	memset (&w->attr, 0, sizeof (ev_statdata));
2559
2560	ev_stat_stat (EV_A_ w);	2730	ev_stat_stat (EV_A_ w);
2561		2731
		2732	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2562	if (w->interval < MIN_STAT_INTERVAL)	2733	w->interval = MIN_STAT_INTERVAL;
2563	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2564		2734
2565	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2735	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2566	ev_set_priority (&w->timer, ev_priority (w));	2736	ev_set_priority (&w->timer, ev_priority (w));
2567		2737
2568	#if EV_USE_INOTIFY	2738	#if EV_USE_INOTIFY
2569	infy_init (EV_A);	2739	infy_init (EV_A);
2570		2740
2571	if (fs_fd >= 0)	2741	if (fs_fd >= 0)
2572	infy_add (EV_A_ w);	2742	infy_add (EV_A_ w);
2573	else	2743	else
2574	#endif	2744	#endif
2575	ev_timer_start (EV_A_ &w->timer);	2745	ev_timer_again (EV_A_ &w->timer);
2576		2746
2577	ev_start (EV_A_ (W)w, 1);	2747	ev_start (EV_A_ (W)w, 1);
2578		2748
2579	EV_FREQUENT_CHECK;	2749	EV_FREQUENT_CHECK;
2580	}	2750	}
…		…
2750	ev_loop (EV_A_ EVLOOP_NONBLOCK);	2920	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2751	}	2921	}
2752	}	2922	}
2753	}	2923	}
2754		2924
		2925	static void
		2926	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		2927	{
		2928	ev_embed w = (ev_embed )(((char *)fork_w) - offsetof (ev_embed, fork));
		2929
		2930	ev_embed_stop (EV_A_ w);
		2931
		2932	{
		2933	struct ev_loop *loop = w->other;
		2934
		2935	ev_loop_fork (EV_A);
		2936	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2937	}
		2938
		2939	ev_embed_start (EV_A_ w);
		2940	}
		2941
2755	#if 0	2942	#if 0
2756	static void	2943	static void
2757	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	2944	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2758	{	2945	{
2759	ev_idle_stop (EV_A_ idle);	2946	ev_idle_stop (EV_A_ idle);
…		…
2766	if (expect_false (ev_is_active (w)))	2953	if (expect_false (ev_is_active (w)))
2767	return;	2954	return;
2768		2955
2769	{	2956	{
2770	struct ev_loop *loop = w->other;	2957	struct ev_loop *loop = w->other;
2771	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2958	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2772	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	2959	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2773	}	2960	}
2774		2961
2775	EV_FREQUENT_CHECK;	2962	EV_FREQUENT_CHECK;
2776		2963
…		…
2779		2966
2780	ev_prepare_init (&w->prepare, embed_prepare_cb);	2967	ev_prepare_init (&w->prepare, embed_prepare_cb);
2781	ev_set_priority (&w->prepare, EV_MINPRI);	2968	ev_set_priority (&w->prepare, EV_MINPRI);
2782	ev_prepare_start (EV_A_ &w->prepare);	2969	ev_prepare_start (EV_A_ &w->prepare);
2783		2970
		2971	ev_fork_init (&w->fork, embed_fork_cb);
		2972	ev_fork_start (EV_A_ &w->fork);
		2973
2784	/ev_idle_init (&w->idle, e,bed_idle_cb);/	2974	/ev_idle_init (&w->idle, e,bed_idle_cb);/
2785		2975
2786	ev_start (EV_A_ (W)w, 1);	2976	ev_start (EV_A_ (W)w, 1);
2787		2977
2788	EV_FREQUENT_CHECK;	2978	EV_FREQUENT_CHECK;
…		…
2795	if (expect_false (!ev_is_active (w)))	2985	if (expect_false (!ev_is_active (w)))
2796	return;	2986	return;
2797		2987
2798	EV_FREQUENT_CHECK;	2988	EV_FREQUENT_CHECK;
2799		2989
2800	ev_io_stop (EV_A_ &w->io);	2990	ev_io_stop (EV_A_ &w->io);
2801	ev_prepare_stop (EV_A_ &w->prepare);	2991	ev_prepare_stop (EV_A_ &w->prepare);
2802		2992	ev_fork_stop (EV_A_ &w->fork);
2803	ev_stop (EV_A_ (W)w);
2804		2993
2805	EV_FREQUENT_CHECK;	2994	EV_FREQUENT_CHECK;
2806	}	2995	}
2807	#endif	2996	#endif
2808		2997
…		…
2905	once_cb (EV_P_ struct ev_once *once, int revents)	3094	once_cb (EV_P_ struct ev_once *once, int revents)
2906	{	3095	{
2907	void (cb)(int revents, void arg) = once->cb;	3096	void (cb)(int revents, void arg) = once->cb;
2908	void *arg = once->arg;	3097	void *arg = once->arg;
2909		3098
2910	ev_io_stop (EV_A_ &once->io);	3099	ev_io_stop (EV_A_ &once->io);
2911	ev_timer_stop (EV_A_ &once->to);	3100	ev_timer_stop (EV_A_ &once->to);
2912	ev_free (once);	3101	ev_free (once);
2913		3102
2914	cb (revents, arg);	3103	cb (revents, arg);
2915	}	3104	}
2916		3105
2917	static void	3106	static void
2918	once_cb_io (EV_P_ ev_io *w, int revents)	3107	once_cb_io (EV_P_ ev_io *w, int revents)
2919	{	3108	{
2920	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	3109	struct ev_once once = (struct ev_once )(((char *)w) - offsetof (struct ev_once, io));
		3110
		3111	once_cb (EV_A_ once, revents \| ev_clear_pending (EV_A_ &once->to));
2921	}	3112	}
2922		3113
2923	static void	3114	static void
2924	once_cb_to (EV_P_ ev_timer *w, int revents)	3115	once_cb_to (EV_P_ ev_timer *w, int revents)
2925	{	3116	{
2926	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	3117	struct ev_once once = (struct ev_once )(((char *)w) - offsetof (struct ev_once, to));
		3118
		3119	once_cb (EV_A_ once, revents \| ev_clear_pending (EV_A_ &once->io));
2927	}	3120	}
2928		3121
2929	void	3122	void
2930	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	3123	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
2931	{	3124	{

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Comparing libev/ev.c (file contents): Revision 1.248 by root, Wed May 21 23:25:21 2008 UTC vs. Revision 1.279 by root, Fri Feb 6 20:17:43 2009 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.248 by root, Wed May 21 23:25:21 2008 UTC vs.
Revision 1.279 by root, Fri Feb 6 20:17:43 2009 UTC