[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 1.281 by root, Mon Mar 16 21:15:06 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
…		…
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
…		…
353	typedef ev_watcher_time *WT;	397	typedef ev_watcher_time *WT;
354		398
355	#define ev_active(w) ((W)(w))->active	399	#define ev_active(w) ((W)(w))->active
356	#define ev_at(w) ((WT)(w))->at	400	#define ev_at(w) ((WT)(w))->at
357		401
358	#if EV_USE_MONOTONIC	402	#if EV_USE_REALTIME
359	/* 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 */
360	/* 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
361	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? */
362	#endif	410	#endif
363		411
364	#ifdef _WIN32	412	#ifdef _WIN32
365	# include "ev_win32.c"	413	# include "ev_win32.c"
…		…
374	{	422	{
375	syserr_cb = cb;	423	syserr_cb = cb;
376	}	424	}
377		425
378	static void noinline	426	static void noinline
379	syserr (const char *msg)	427	ev_syserr (const char *msg)
380	{	428	{
381	if (!msg)	429	if (!msg)
382	msg = "(libev) system error";	430	msg = "(libev) system error";
383		431
384	if (syserr_cb)	432	if (syserr_cb)
…		…
435	typedef struct	483	typedef struct
436	{	484	{
437	WL head;	485	WL head;
438	unsigned char events;	486	unsigned char events;
439	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
440	#if EV_SELECT_IS_WINSOCKET	493	#if EV_SELECT_IS_WINSOCKET
441	SOCKET handle;	494	SOCKET handle;
442	#endif	495	#endif
443	} ANFD;	496	} ANFD;
444		497
…		…
504		557
505	ev_tstamp	558	ev_tstamp
506	ev_time (void)	559	ev_time (void)
507	{	560	{
508	#if EV_USE_REALTIME	561	#if EV_USE_REALTIME
		562	if (expect_true (have_realtime))
		563	{
509	struct timespec ts;	564	struct timespec ts;
510	clock_gettime (CLOCK_REALTIME, &ts);	565	clock_gettime (CLOCK_REALTIME, &ts);
511	return ts.tv_sec + ts.tv_nsec * 1e-9;	566	return ts.tv_sec + ts.tv_nsec * 1e-9;
512	#else	567	}
		568	#endif
		569
513	struct timeval tv;	570	struct timeval tv;
514	gettimeofday (&tv, 0);	571	gettimeofday (&tv, 0);
515	return tv.tv_sec + tv.tv_usec * 1e-6;	572	return tv.tv_sec + tv.tv_usec * 1e-6;
516	#endif
517	}	573	}
518		574
519	ev_tstamp inline_size	575	ev_tstamp inline_size
520	get_clock (void)	576	get_clock (void)
521	{	577	{
…		…
557	struct timeval tv;	613	struct timeval tv;
558		614
559	tv.tv_sec = (time_t)delay;	615	tv.tv_sec = (time_t)delay;
560	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	616	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
561		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 */
562	select (0, 0, 0, 0, &tv);	621	select (0, 0, 0, 0, &tv);
563	#endif	622	#endif
564	}	623	}
565	}	624	}
566		625
…		…
593	array_realloc (int elem, void base, int cur, int cnt)	652	array_realloc (int elem, void base, int cur, int cnt)
594	{	653	{
595	cur = array_nextsize (elem, cur, cnt);	654	cur = array_nextsize (elem, cur, cnt);
596	return ev_realloc (base, elem * *cur);	655	return ev_realloc (base, elem * *cur);
597	}	656	}
		657
		658	#define array_init_zero(base,count) \
		659	memset ((void )(base), 0, sizeof ((base)) * (count))
598		660
599	#define array_needsize(type,base,cur,cnt,init) \	661	#define array_needsize(type,base,cur,cnt,init) \
600	if (expect_false ((cnt) > (cur))) \	662	if (expect_false ((cnt) > (cur))) \
601	{ \	663	{ \
602	int ocur_ = (cur); \	664	int ocur_ = (cur); \
…		…
614	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	676	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
615	}	677	}
616	#endif	678	#endif
617		679
618	#define array_free(stem, idx) \	680	#define array_free(stem, idx) \
619	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	681	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
620		682
621	/*****************************************************************************/	683	/*****************************************************************************/
622		684
623	void noinline	685	void noinline
624	ev_feed_event (EV_P_ void *w, int revents)	686	ev_feed_event (EV_P_ void *w, int revents)
…		…
646	ev_feed_event (EV_A_ events [i], type);	708	ev_feed_event (EV_A_ events [i], type);
647	}	709	}
648		710
649	/*****************************************************************************/	711	/*****************************************************************************/
650		712
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	713	void inline_speed
665	fd_event (EV_P_ int fd, int revents)	714	fd_event (EV_P_ int fd, int revents)
666	{	715	{
667	ANFD *anfd = anfds + fd;	716	ANFD *anfd = anfds + fd;
668	ev_io *w;	717	ev_io *w;
…		…
700	events \|= (unsigned char)w->events;	749	events \|= (unsigned char)w->events;
701		750
702	#if EV_SELECT_IS_WINSOCKET	751	#if EV_SELECT_IS_WINSOCKET
703	if (events)	752	if (events)
704	{	753	{
705	unsigned long argp;	754	unsigned long arg;
706	#ifdef EV_FD_TO_WIN32_HANDLE	755	#ifdef EV_FD_TO_WIN32_HANDLE
707	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	756	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
708	#else	757	#else
709	anfd->handle = _get_osfhandle (fd);	758	anfd->handle = _get_osfhandle (fd);
710	#endif	759	#endif
711	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));
712	}	761	}
713	#endif	762	#endif
714		763
715	{	764	{
716	unsigned char o_events = anfd->events;	765	unsigned char o_events = anfd->events;
717	unsigned char o_reify = anfd->reify;	766	unsigned char o_reify = anfd->reify;
718		767
719	anfd->reify = 0;	768	anfd->reify = 0;
720	anfd->events = events;	769	anfd->events = events;
721		770
722	if (o_events != events \|\| o_reify & EV_IOFDSET)	771	if (o_events != events \|\| o_reify & EV__IOFDSET)
723	backend_modify (EV_A_ fd, o_events, events);	772	backend_modify (EV_A_ fd, o_events, events);
724	}	773	}
725	}	774	}
726		775
727	fdchangecnt = 0;	776	fdchangecnt = 0;
…		…
769	{	818	{
770	int fd;	819	int fd;
771		820
772	for (fd = 0; fd < anfdmax; ++fd)	821	for (fd = 0; fd < anfdmax; ++fd)
773	if (anfds [fd].events)	822	if (anfds [fd].events)
774	if (!fd_valid (fd) == -1 && errno == EBADF)	823	if (!fd_valid (fd) && errno == EBADF)
775	fd_kill (EV_A_ fd);	824	fd_kill (EV_A_ fd);
776	}	825	}
777		826
778	/* 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 */
779	static void noinline	828	static void noinline
…		…
797		846
798	for (fd = 0; fd < anfdmax; ++fd)	847	for (fd = 0; fd < anfdmax; ++fd)
799	if (anfds [fd].events)	848	if (anfds [fd].events)
800	{	849	{
801	anfds [fd].events = 0;	850	anfds [fd].events = 0;
		851	anfds [fd].emask = 0;
802	fd_change (EV_A_ fd, EV_IOFDSET \| 1);	852	fd_change (EV_A_ fd, EV__IOFDSET \| 1);
803	}	853	}
804	}	854	}
805		855
806	/*****************************************************************************/	856	/*****************************************************************************/
807		857
…		…
938	/* 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 */
939	void inline_size	989	void inline_size
940	reheap (ANHE *heap, int N)	990	reheap (ANHE *heap, int N)
941	{	991	{
942	int i;	992	int i;
		993
943	/* 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 */
944	/* 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 */
945	for (i = 0; i < N; ++i)	996	for (i = 0; i < N; ++i)
946	upheap (heap, i + HEAP0);	997	upheap (heap, i + HEAP0);
947	}	998	}
948		999
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	/*****************************************************************************/	1000	/*****************************************************************************/
965		1001
966	typedef struct	1002	typedef struct
967	{	1003	{
968	WL head;	1004	WL head;
…		…
972	static ANSIG *signals;	1008	static ANSIG *signals;
973	static int signalmax;	1009	static int signalmax;
974		1010
975	static EV_ATOMIC_T gotsig;	1011	static EV_ATOMIC_T gotsig;
976		1012
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	/*****************************************************************************/	1013	/*****************************************************************************/
990		1014
991	void inline_speed	1015	void inline_speed
992	fd_intern (int fd)	1016	fd_intern (int fd)
993	{	1017	{
994	#ifdef _WIN32	1018	#ifdef _WIN32
995	int arg = 1;	1019	unsigned long arg = 1;
996	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1020	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
997	#else	1021	#else
998	fcntl (fd, F_SETFD, FD_CLOEXEC);	1022	fcntl (fd, F_SETFD, FD_CLOEXEC);
999	fcntl (fd, F_SETFL, O_NONBLOCK);	1023	fcntl (fd, F_SETFL, O_NONBLOCK);
1000	#endif	1024	#endif
…		…
1014	}	1038	}
1015	else	1039	else
1016	#endif	1040	#endif
1017	{	1041	{
1018	while (pipe (evpipe))	1042	while (pipe (evpipe))
1019	syserr ("(libev) error creating signal/async pipe");	1043	ev_syserr ("(libev) error creating signal/async pipe");
1020		1044
1021	fd_intern (evpipe [0]);	1045	fd_intern (evpipe [0]);
1022	fd_intern (evpipe [1]);	1046	fd_intern (evpipe [1]);
1023	ev_io_set (&pipeev, evpipe [0], EV_READ);	1047	ev_io_set (&pipeev, evpipe [0], EV_READ);
1024	}	1048	}
…		…
1114	ev_feed_signal_event (EV_P_ int signum)	1138	ev_feed_signal_event (EV_P_ int signum)
1115	{	1139	{
1116	WL w;	1140	WL w;
1117		1141
1118	#if EV_MULTIPLICITY	1142	#if EV_MULTIPLICITY
1119	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));
1120	#endif	1144	#endif
1121		1145
1122	--signum;	1146	--signum;
1123		1147
1124	if (signum < 0 \|\| signum >= signalmax)	1148	if (signum < 0 \|\| signum >= signalmax)
…		…
1253	/* kqueue is borked on everything but netbsd apparently */	1277	/* kqueue is borked on everything but netbsd apparently */
1254	/* 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 */
1255	flags &= ~EVBACKEND_KQUEUE;	1279	flags &= ~EVBACKEND_KQUEUE;
1256	#endif	1280	#endif
1257	#ifdef __APPLE__	1281	#ifdef __APPLE__
1258	// flags &= ~EVBACKEND_KQUEUE; for documentation	1282	/* only select works correctly on that "unix-certified" platform */
1259	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 */
1260	#endif	1285	#endif
1261		1286
1262	return flags;	1287	return flags;
1263	}	1288	}
1264		1289
…		…
1301	static void noinline	1326	static void noinline
1302	loop_init (EV_P_ unsigned int flags)	1327	loop_init (EV_P_ unsigned int flags)
1303	{	1328	{
1304	if (!backend)	1329	if (!backend)
1305	{	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
1306	#if EV_USE_MONOTONIC	1341	#if EV_USE_MONOTONIC
		1342	if (!have_monotonic)
1307	{	1343	{
1308	struct timespec ts;	1344	struct timespec ts;
		1345
1309	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1346	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1310	have_monotonic = 1;	1347	have_monotonic = 1;
1311	}	1348	}
1312	#endif	1349	#endif
1313		1350
1314	ev_rt_now = ev_time ();	1351	ev_rt_now = ev_time ();
1315	mn_now = get_clock ();	1352	mn_now = get_clock ();
1316	now_floor = mn_now;	1353	now_floor = mn_now;
…		…
1484		1521
1485	postfork = 0;	1522	postfork = 0;
1486	}	1523	}
1487		1524
1488	#if EV_MULTIPLICITY	1525	#if EV_MULTIPLICITY
		1526
1489	struct ev_loop *	1527	struct ev_loop *
1490	ev_loop_new (unsigned int flags)	1528	ev_loop_new (unsigned int flags)
1491	{	1529	{
1492	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));
1493		1531
…		…
1513	{	1551	{
1514	postfork = 1; /* must be in line with ev_default_fork */	1552	postfork = 1; /* must be in line with ev_default_fork */
1515	}	1553	}
1516		1554
1517	#if EV_VERIFY	1555	#if EV_VERIFY
1518	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
1519	array_check (W **ws, int cnt)	1581	array_verify (EV_P_ W *ws, int cnt)
1520	{	1582	{
1521	while (cnt--)	1583	while (cnt--)
		1584	{
1522	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	}
1523	}	1588	}
		1589	#endif
1524		1590
1525	static void	1591	void
1526	ev_loop_verify (EV_P)	1592	ev_loop_verify (EV_P)
1527	{	1593	{
		1594	#if EV_VERIFY
1528	int i;	1595	int i;
		1596	WL w;
1529		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);
1530	checkheap (timers, timercnt);	1614	verify_heap (EV_A_ timers, timercnt);
		1615
1531	#if EV_PERIODIC_ENABLE	1616	#if EV_PERIODIC_ENABLE
		1617	assert (periodicmax >= periodiccnt);
1532	checkheap (periodics, periodiccnt);	1618	verify_heap (EV_A_ periodics, periodiccnt);
1533	#endif	1619	#endif
1534		1620
		1621	for (i = NUMPRI; i--; )
		1622	{
		1623	assert (pendingmax [i] >= pendingcnt [i]);
1535	#if EV_IDLE_ENABLE	1624	#if EV_IDLE_ENABLE
1536	for (i = NUMPRI; i--; )	1625	assert (idleall >= 0);
		1626	assert (idlemax [i] >= idlecnt [i]);
1537	array_check ((W **)idles [i], idlecnt [i]);	1627	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1538	#endif	1628	#endif
		1629	}
		1630
1539	#if EV_FORK_ENABLE	1631	#if EV_FORK_ENABLE
		1632	assert (forkmax >= forkcnt);
1540	array_check ((W **)forks, forkcnt);	1633	array_verify (EV_A_ (W *)forks, forkcnt);
1541	#endif	1634	#endif
1542	array_check ((W **)prepares, preparecnt);	1635
1543	array_check ((W **)checks, checkcnt);
1544	#if EV_ASYNC_ENABLE	1636	#if EV_ASYNC_ENABLE
		1637	assert (asyncmax >= asynccnt);
1545	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)
1546	#endif	1650	# endif
1547	}
1548	#endif	1651	#endif
		1652	}
1549		1653
1550	#endif	1654	#endif /* multiplicity */
1551		1655
1552	#if EV_MULTIPLICITY	1656	#if EV_MULTIPLICITY
1553	struct ev_loop *	1657	struct ev_loop *
1554	ev_default_loop_init (unsigned int flags)	1658	ev_default_loop_init (unsigned int flags)
1555	#else	1659	#else
…		…
1588	{	1692	{
1589	#if EV_MULTIPLICITY	1693	#if EV_MULTIPLICITY
1590	struct ev_loop *loop = ev_default_loop_ptr;	1694	struct ev_loop *loop = ev_default_loop_ptr;
1591	#endif	1695	#endif
1592		1696
		1697	ev_default_loop_ptr = 0;
		1698
1593	#ifndef _WIN32	1699	#ifndef _WIN32
1594	ev_ref (EV_A); /* child watcher */	1700	ev_ref (EV_A); /* child watcher */
1595	ev_signal_stop (EV_A_ &childev);	1701	ev_signal_stop (EV_A_ &childev);
1596	#endif	1702	#endif
1597		1703
…		…
1603	{	1709	{
1604	#if EV_MULTIPLICITY	1710	#if EV_MULTIPLICITY
1605	struct ev_loop *loop = ev_default_loop_ptr;	1711	struct ev_loop *loop = ev_default_loop_ptr;
1606	#endif	1712	#endif
1607		1713
1608	if (backend)
1609	postfork = 1; /* must be in line with ev_loop_fork */	1714	postfork = 1; /* must be in line with ev_loop_fork */
1610	}	1715	}
1611		1716
1612	/*****************************************************************************/	1717	/*****************************************************************************/
1613		1718
1614	void	1719	void
…		…
1619		1724
1620	void inline_speed	1725	void inline_speed
1621	call_pending (EV_P)	1726	call_pending (EV_P)
1622	{	1727	{
1623	int pri;	1728	int pri;
1624
1625	EV_FREQUENT_CHECK;
1626		1729
1627	for (pri = NUMPRI; pri--; )	1730	for (pri = NUMPRI; pri--; )
1628	while (pendingcnt [pri])	1731	while (pendingcnt [pri])
1629	{	1732	{
1630	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1733	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1631		1734
1632	if (expect_true (p->w))	1735	if (expect_true (p->w))
1633	{	1736	{
1634	/assert (("non-pending watcher on pending list", p->w->pending));/	1737	/assert (("libev: non-pending watcher on pending list", p->w->pending));/
1635		1738
1636	p->w->pending = 0;	1739	p->w->pending = 0;
1637	EV_CB_INVOKE (p->w, p->events);	1740	EV_CB_INVOKE (p->w, p->events);
		1741	EV_FREQUENT_CHECK;
1638	}	1742	}
1639	}	1743	}
1640
1641	EV_FREQUENT_CHECK;
1642	}	1744	}
1643		1745
1644	#if EV_IDLE_ENABLE	1746	#if EV_IDLE_ENABLE
1645	void inline_size	1747	void inline_size
1646	idle_reify (EV_P)	1748	idle_reify (EV_P)
…		…
1671		1773
1672	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	1774	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1673	{	1775	{
1674	ev_timer w = (ev_timer )ANHE_w (timers [HEAP0]);	1776	ev_timer w = (ev_timer )ANHE_w (timers [HEAP0]);
1675		1777
1676	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/	1778	/assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));/
1677		1779
1678	/* first reschedule or stop timer */	1780	/* first reschedule or stop timer */
1679	if (w->repeat)	1781	if (w->repeat)
1680	{	1782	{
1681	ev_at (w) += w->repeat;	1783	ev_at (w) += w->repeat;
1682	if (ev_at (w) < mn_now)	1784	if (ev_at (w) < mn_now)
1683	ev_at (w) = mn_now;	1785	ev_at (w) = mn_now;
1684		1786
1685	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.));
1686		1788
1687	ANHE_at_cache (timers [HEAP0]);	1789	ANHE_at_cache (timers [HEAP0]);
1688	downheap (timers, timercnt, HEAP0);	1790	downheap (timers, timercnt, HEAP0);
1689	}	1791	}
1690	else	1792	else
…		…
1698	#if EV_PERIODIC_ENABLE	1800	#if EV_PERIODIC_ENABLE
1699	void inline_size	1801	void inline_size
1700	periodics_reify (EV_P)	1802	periodics_reify (EV_P)
1701	{	1803	{
1702	EV_FREQUENT_CHECK;	1804	EV_FREQUENT_CHECK;
		1805
1703	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	1806	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1704	{	1807	{
1705	ev_periodic w = (ev_periodic )ANHE_w (periodics [HEAP0]);	1808	ev_periodic w = (ev_periodic )ANHE_w (periodics [HEAP0]);
1706		1809
1707	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/	1810	/assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));/
1708		1811
1709	/* first reschedule or stop timer */	1812	/* first reschedule or stop timer */
1710	if (w->reschedule_cb)	1813	if (w->reschedule_cb)
1711	{	1814	{
1712	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	1815	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1713		1816
1714	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));
1715		1818
1716	ANHE_at_cache (periodics [HEAP0]);	1819	ANHE_at_cache (periodics [HEAP0]);
1717	downheap (periodics, periodiccnt, HEAP0);	1820	downheap (periodics, periodiccnt, HEAP0);
1718	EV_FREQUENT_CHECK;
1719	}	1821	}
1720	else if (w->interval)	1822	else if (w->interval)
1721	{	1823	{
1722	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;
1723	/* 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 */
…		…
1848	ev_unref (EV_P)	1950	ev_unref (EV_P)
1849	{	1951	{
1850	--activecnt;	1952	--activecnt;
1851	}	1953	}
1852		1954
		1955	void
		1956	ev_now_update (EV_P)
		1957	{
		1958	time_update (EV_A_ 1e100);
		1959	}
		1960
1853	static int loop_done;	1961	static int loop_done;
1854		1962
1855	void	1963	void
1856	ev_loop (EV_P_ int flags)	1964	ev_loop (EV_P_ int flags)
1857	{	1965	{
…		…
1859		1967
1860	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 */
1861		1969
1862	do	1970	do
1863	{	1971	{
		1972	#if EV_VERIFY >= 2
		1973	ev_loop_verify (EV_A);
		1974	#endif
		1975
1864	#ifndef _WIN32	1976	#ifndef _WIN32
1865	if (expect_false (curpid)) /* penalise the forking check even more */	1977	if (expect_false (curpid)) /* penalise the forking check even more */
1866	if (expect_false (getpid () != curpid))	1978	if (expect_false (getpid () != curpid))
1867	{	1979	{
1868	curpid = getpid ();	1980	curpid = getpid ();
…		…
2061	int fd = w->fd;	2173	int fd = w->fd;
2062		2174
2063	if (expect_false (ev_is_active (w)))	2175	if (expect_false (ev_is_active (w)))
2064	return;	2176	return;
2065		2177
2066	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))));
2067		2180
2068	EV_FREQUENT_CHECK;	2181	EV_FREQUENT_CHECK;
2069		2182
2070	ev_start (EV_A_ (W)w, 1);	2183	ev_start (EV_A_ (W)w, 1);
2071	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2184	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2072	wlist_add (&anfds[fd].head, (WL)w);	2185	wlist_add (&anfds[fd].head, (WL)w);
2073		2186
2074	fd_change (EV_A_ fd, w->events & EV_IOFDSET \| 1);	2187	fd_change (EV_A_ fd, w->events & EV__IOFDSET \| 1);
2075	w->events &= ~EV_IOFDSET;	2188	w->events &= ~EV__IOFDSET;
2076		2189
2077	EV_FREQUENT_CHECK;	2190	EV_FREQUENT_CHECK;
2078	}	2191	}
2079		2192
2080	void noinline	2193	void noinline
…		…
2082	{	2195	{
2083	clear_pending (EV_A_ (W)w);	2196	clear_pending (EV_A_ (W)w);
2084	if (expect_false (!ev_is_active (w)))	2197	if (expect_false (!ev_is_active (w)))
2085	return;	2198	return;
2086		2199
2087	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));
2088		2201
2089	EV_FREQUENT_CHECK;	2202	EV_FREQUENT_CHECK;
2090		2203
2091	wlist_del (&anfds[w->fd].head, (WL)w);	2204	wlist_del (&anfds[w->fd].head, (WL)w);
2092	ev_stop (EV_A_ (W)w);	2205	ev_stop (EV_A_ (W)w);
…		…
2102	if (expect_false (ev_is_active (w)))	2215	if (expect_false (ev_is_active (w)))
2103	return;	2216	return;
2104		2217
2105	ev_at (w) += mn_now;	2218	ev_at (w) += mn_now;
2106		2219
2107	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.));
2108		2221
2109	EV_FREQUENT_CHECK;	2222	EV_FREQUENT_CHECK;
2110		2223
2111	++timercnt;	2224	++timercnt;
2112	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);	2225	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
…		…
2115	ANHE_at_cache (timers [ev_active (w)]);	2228	ANHE_at_cache (timers [ev_active (w)]);
2116	upheap (timers, ev_active (w));	2229	upheap (timers, ev_active (w));
2117		2230
2118	EV_FREQUENT_CHECK;	2231	EV_FREQUENT_CHECK;
2119		2232
2120	/assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));/	2233	/assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));/
2121	}	2234	}
2122		2235
2123	void noinline	2236	void noinline
2124	ev_timer_stop (EV_P_ ev_timer *w)	2237	ev_timer_stop (EV_P_ ev_timer *w)
2125	{	2238	{
…		…
2130	EV_FREQUENT_CHECK;	2243	EV_FREQUENT_CHECK;
2131		2244
2132	{	2245	{
2133	int active = ev_active (w);	2246	int active = ev_active (w);
2134		2247
2135	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2248	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2136		2249
2137	--timercnt;	2250	--timercnt;
2138		2251
2139	if (expect_true (active < timercnt + HEAP0))	2252	if (expect_true (active < timercnt + HEAP0))
2140	{	2253	{
…		…
2184		2297
2185	if (w->reschedule_cb)	2298	if (w->reschedule_cb)
2186	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2299	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2187	else if (w->interval)	2300	else if (w->interval)
2188	{	2301	{
2189	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.));
2190	/* 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 */
2191	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;
2192	}	2305	}
2193	else	2306	else
2194	ev_at (w) = w->offset;	2307	ev_at (w) = w->offset;
…		…
2202	ANHE_at_cache (periodics [ev_active (w)]);	2315	ANHE_at_cache (periodics [ev_active (w)]);
2203	upheap (periodics, ev_active (w));	2316	upheap (periodics, ev_active (w));
2204		2317
2205	EV_FREQUENT_CHECK;	2318	EV_FREQUENT_CHECK;
2206		2319
2207	/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));/
2208	}	2321	}
2209		2322
2210	void noinline	2323	void noinline
2211	ev_periodic_stop (EV_P_ ev_periodic *w)	2324	ev_periodic_stop (EV_P_ ev_periodic *w)
2212	{	2325	{
…		…
2217	EV_FREQUENT_CHECK;	2330	EV_FREQUENT_CHECK;
2218		2331
2219	{	2332	{
2220	int active = ev_active (w);	2333	int active = ev_active (w);
2221		2334
2222	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2335	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2223		2336
2224	--periodiccnt;	2337	--periodiccnt;
2225		2338
2226	if (expect_true (active < periodiccnt + HEAP0))	2339	if (expect_true (active < periodiccnt + HEAP0))
2227	{	2340	{
…		…
2250		2363
2251	void noinline	2364	void noinline
2252	ev_signal_start (EV_P_ ev_signal *w)	2365	ev_signal_start (EV_P_ ev_signal *w)
2253	{	2366	{
2254	#if EV_MULTIPLICITY	2367	#if EV_MULTIPLICITY
2255	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));
2256	#endif	2369	#endif
2257	if (expect_false (ev_is_active (w)))	2370	if (expect_false (ev_is_active (w)))
2258	return;	2371	return;
2259		2372
2260	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));
2261		2374
2262	evpipe_init (EV_A);	2375	evpipe_init (EV_A);
2263		2376
2264	EV_FREQUENT_CHECK;	2377	EV_FREQUENT_CHECK;
2265		2378
…		…
2268	sigset_t full, prev;	2381	sigset_t full, prev;
2269	sigfillset (&full);	2382	sigfillset (&full);
2270	sigprocmask (SIG_SETMASK, &full, &prev);	2383	sigprocmask (SIG_SETMASK, &full, &prev);
2271	#endif	2384	#endif
2272		2385
2273	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2386	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2274		2387
2275	#ifndef _WIN32	2388	#ifndef _WIN32
2276	sigprocmask (SIG_SETMASK, &prev, 0);	2389	sigprocmask (SIG_SETMASK, &prev, 0);
2277	#endif	2390	#endif
2278	}	2391	}
…		…
2316		2429
2317	void	2430	void
2318	ev_child_start (EV_P_ ev_child *w)	2431	ev_child_start (EV_P_ ev_child *w)
2319	{	2432	{
2320	#if EV_MULTIPLICITY	2433	#if EV_MULTIPLICITY
2321	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));
2322	#endif	2435	#endif
2323	if (expect_false (ev_is_active (w)))	2436	if (expect_false (ev_is_active (w)))
2324	return;	2437	return;
2325		2438
2326	EV_FREQUENT_CHECK;	2439	EV_FREQUENT_CHECK;
…		…
2351	# ifdef _WIN32	2464	# ifdef _WIN32
2352	# undef lstat	2465	# undef lstat
2353	# define lstat(a,b) _stati64 (a,b)	2466	# define lstat(a,b) _stati64 (a,b)
2354	# endif	2467	# endif
2355		2468
2356	#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 */
2357	#define MIN_STAT_INTERVAL 0.1074891	2471	#define MIN_STAT_INTERVAL 0.1074891
2358		2472
2359	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);
2360		2474
2361	#if EV_USE_INOTIFY	2475	#if EV_USE_INOTIFY
2362	# define EV_INOTIFY_BUFSIZE 8192	2476	# define EV_INOTIFY_BUFSIZE 8192
…		…
2366	{	2480	{
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);	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);
2368		2482
2369	if (w->wd < 0)	2483	if (w->wd < 0)
2370	{	2484	{
		2485	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 */	2486	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2372		2487
2373	/* monitor some parent directory for speedup hints */	2488	/* monitor some parent directory for speedup hints */
2374	/* note that exceeding the hardcoded limit is not a correctness issue, */	2489	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2375	/* but an efficiency issue only */	2490	/* but an efficiency issue only */
2376	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)	2491	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)
2377	{	2492	{
2378	char path [4096];	2493	char path [4096];
2379	strcpy (path, w->path);	2494	strcpy (path, w->path);
…		…
2383	int mask = IN_MASK_ADD \| IN_DELETE_SELF \| IN_MOVE_SELF	2498	int mask = IN_MASK_ADD \| IN_DELETE_SELF \| IN_MOVE_SELF
2384	\| (errno == EACCES ? IN_ATTRIB : IN_CREATE \| IN_MOVED_TO);	2499	\| (errno == EACCES ? IN_ATTRIB : IN_CREATE \| IN_MOVED_TO);
2385		2500
2386	char *pend = strrchr (path, '/');	2501	char *pend = strrchr (path, '/');
2387		2502
2388	if (!pend)	2503	if (!pend \|\| pend == path)
2389	break; /* whoops, no '/', complain to your admin */	2504	break;
2390		2505
2391	*pend = 0;	2506	*pend = 0;
2392	w->wd = inotify_add_watch (fs_fd, path, mask);	2507	w->wd = inotify_add_watch (fs_fd, path, mask);
2393	}	2508	}
2394	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));	2509	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));
2395	}	2510	}
2396	}	2511	}
2397	else
2398	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2399		2512
2400	if (w->wd >= 0)	2513	if (w->wd >= 0)
		2514	{
2401	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	}
2402	}	2534	}
2403		2535
2404	static void noinline	2536	static void noinline
2405	infy_del (EV_P_ ev_stat *w)	2537	infy_del (EV_P_ ev_stat *w)
2406	{	2538	{
…		…
2420		2552
2421	static void noinline	2553	static void noinline
2422	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)
2423	{	2555	{
2424	if (slot < 0)	2556	if (slot < 0)
2425	/* overflow, need to check for all hahs slots */	2557	/* overflow, need to check for all hash slots */
2426	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2558	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2427	infy_wd (EV_A_ slot, wd, ev);	2559	infy_wd (EV_A_ slot, wd, ev);
2428	else	2560	else
2429	{	2561	{
2430	WL w_;	2562	WL w_;
…		…
2436		2568
2437	if (w->wd == wd \|\| wd == -1)	2569	if (w->wd == wd \|\| wd == -1)
2438	{	2570	{
2439	if (ev->mask & (IN_IGNORED \| IN_UNMOUNT \| IN_DELETE_SELF))	2571	if (ev->mask & (IN_IGNORED \| IN_UNMOUNT \| IN_DELETE_SELF))
2440	{	2572	{
		2573	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2441	w->wd = -1;	2574	w->wd = -1;
2442	infy_add (EV_A_ w); /* re-add, no matter what */	2575	infy_add (EV_A_ w); /* re-add, no matter what */
2443	}	2576	}
2444		2577
2445	stat_timer_cb (EV_A_ &w->timer, 0);	2578	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2459	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)
2460	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2593	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2461	}	2594	}
2462		2595
2463	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
2464	infy_init (EV_P)	2620	infy_init (EV_P)
2465	{	2621	{
2466	if (fs_fd != -2)	2622	if (fs_fd != -2)
2467	return;	2623	return;
		2624
		2625	fs_fd = -1;
		2626
		2627	check_2625 (EV_A);
2468		2628
2469	fs_fd = inotify_init ();	2629	fs_fd = inotify_init ();
2470		2630
2471	if (fs_fd >= 0)	2631	if (fs_fd >= 0)
2472	{	2632	{
…		…
2500	w->wd = -1;	2660	w->wd = -1;
2501		2661
2502	if (fs_fd >= 0)	2662	if (fs_fd >= 0)
2503	infy_add (EV_A_ w); /* re-add, no matter what */	2663	infy_add (EV_A_ w); /* re-add, no matter what */
2504	else	2664	else
2505	ev_timer_start (EV_A_ &w->timer);	2665	ev_timer_again (EV_A_ &w->timer);
2506	}	2666	}
2507
2508	}	2667	}
2509	}	2668	}
2510		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)
2511	#endif	2676	#endif
2512		2677
2513	void	2678	void
2514	ev_stat_stat (EV_P_ ev_stat *w)	2679	ev_stat_stat (EV_P_ ev_stat *w)
2515	{	2680	{
…		…
2542	\|\| w->prev.st_atime != w->attr.st_atime	2707	\|\| w->prev.st_atime != w->attr.st_atime
2543	\|\| w->prev.st_mtime != w->attr.st_mtime	2708	\|\| w->prev.st_mtime != w->attr.st_mtime
2544	\|\| w->prev.st_ctime != w->attr.st_ctime	2709	\|\| w->prev.st_ctime != w->attr.st_ctime
2545	) {	2710	) {
2546	#if EV_USE_INOTIFY	2711	#if EV_USE_INOTIFY
		2712	if (fs_fd >= 0)
		2713	{
2547	infy_del (EV_A_ w);	2714	infy_del (EV_A_ w);
2548	infy_add (EV_A_ w);	2715	infy_add (EV_A_ w);
2549	ev_stat_stat (EV_A_ w); /* avoid race... */	2716	ev_stat_stat (EV_A_ w); /* avoid race... */
		2717	}
2550	#endif	2718	#endif
2551		2719
2552	ev_feed_event (EV_A_ w, EV_STAT);	2720	ev_feed_event (EV_A_ w, EV_STAT);
2553	}	2721	}
2554	}	2722	}
…		…
2557	ev_stat_start (EV_P_ ev_stat *w)	2725	ev_stat_start (EV_P_ ev_stat *w)
2558	{	2726	{
2559	if (expect_false (ev_is_active (w)))	2727	if (expect_false (ev_is_active (w)))
2560	return;	2728	return;
2561		2729
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);	2730	ev_stat_stat (EV_A_ w);
2567		2731
		2732	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2568	if (w->interval < MIN_STAT_INTERVAL)	2733	w->interval = MIN_STAT_INTERVAL;
2569	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2570		2734
2571	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);
2572	ev_set_priority (&w->timer, ev_priority (w));	2736	ev_set_priority (&w->timer, ev_priority (w));
2573		2737
2574	#if EV_USE_INOTIFY	2738	#if EV_USE_INOTIFY
2575	infy_init (EV_A);	2739	infy_init (EV_A);
2576		2740
2577	if (fs_fd >= 0)	2741	if (fs_fd >= 0)
2578	infy_add (EV_A_ w);	2742	infy_add (EV_A_ w);
2579	else	2743	else
2580	#endif	2744	#endif
2581	ev_timer_start (EV_A_ &w->timer);	2745	ev_timer_again (EV_A_ &w->timer);
2582		2746
2583	ev_start (EV_A_ (W)w, 1);	2747	ev_start (EV_A_ (W)w, 1);
2584		2748
2585	EV_FREQUENT_CHECK;	2749	EV_FREQUENT_CHECK;
2586	}	2750	}
…		…
2756	ev_loop (EV_A_ EVLOOP_NONBLOCK);	2920	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2757	}	2921	}
2758	}	2922	}
2759	}	2923	}
2760		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
2761	#if 0	2942	#if 0
2762	static void	2943	static void
2763	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	2944	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2764	{	2945	{
2765	ev_idle_stop (EV_A_ idle);	2946	ev_idle_stop (EV_A_ idle);
…		…
2772	if (expect_false (ev_is_active (w)))	2953	if (expect_false (ev_is_active (w)))
2773	return;	2954	return;
2774		2955
2775	{	2956	{
2776	struct ev_loop *loop = w->other;	2957	struct ev_loop *loop = w->other;
2777	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 ()));
2778	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);
2779	}	2960	}
2780		2961
2781	EV_FREQUENT_CHECK;	2962	EV_FREQUENT_CHECK;
2782		2963
…		…
2785		2966
2786	ev_prepare_init (&w->prepare, embed_prepare_cb);	2967	ev_prepare_init (&w->prepare, embed_prepare_cb);
2787	ev_set_priority (&w->prepare, EV_MINPRI);	2968	ev_set_priority (&w->prepare, EV_MINPRI);
2788	ev_prepare_start (EV_A_ &w->prepare);	2969	ev_prepare_start (EV_A_ &w->prepare);
2789		2970
		2971	ev_fork_init (&w->fork, embed_fork_cb);
		2972	ev_fork_start (EV_A_ &w->fork);
		2973
2790	/ev_idle_init (&w->idle, e,bed_idle_cb);/	2974	/ev_idle_init (&w->idle, e,bed_idle_cb);/
2791		2975
2792	ev_start (EV_A_ (W)w, 1);	2976	ev_start (EV_A_ (W)w, 1);
2793		2977
2794	EV_FREQUENT_CHECK;	2978	EV_FREQUENT_CHECK;
…		…
2801	if (expect_false (!ev_is_active (w)))	2985	if (expect_false (!ev_is_active (w)))
2802	return;	2986	return;
2803		2987
2804	EV_FREQUENT_CHECK;	2988	EV_FREQUENT_CHECK;
2805		2989
2806	ev_io_stop (EV_A_ &w->io);	2990	ev_io_stop (EV_A_ &w->io);
2807	ev_prepare_stop (EV_A_ &w->prepare);	2991	ev_prepare_stop (EV_A_ &w->prepare);
2808		2992	ev_fork_stop (EV_A_ &w->fork);
2809	ev_stop (EV_A_ (W)w);
2810		2993
2811	EV_FREQUENT_CHECK;	2994	EV_FREQUENT_CHECK;
2812	}	2995	}
2813	#endif	2996	#endif
2814		2997
…		…
2911	once_cb (EV_P_ struct ev_once *once, int revents)	3094	once_cb (EV_P_ struct ev_once *once, int revents)
2912	{	3095	{
2913	void (cb)(int revents, void arg) = once->cb;	3096	void (cb)(int revents, void arg) = once->cb;
2914	void *arg = once->arg;	3097	void *arg = once->arg;
2915		3098
2916	ev_io_stop (EV_A_ &once->io);	3099	ev_io_stop (EV_A_ &once->io);
2917	ev_timer_stop (EV_A_ &once->to);	3100	ev_timer_stop (EV_A_ &once->to);
2918	ev_free (once);	3101	ev_free (once);
2919		3102
2920	cb (revents, arg);	3103	cb (revents, arg);
2921	}	3104	}
2922		3105
2923	static void	3106	static void
2924	once_cb_io (EV_P_ ev_io *w, int revents)	3107	once_cb_io (EV_P_ ev_io *w, int revents)
2925	{	3108	{
2926	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));
2927	}	3112	}
2928		3113
2929	static void	3114	static void
2930	once_cb_to (EV_P_ ev_timer *w, int revents)	3115	once_cb_to (EV_P_ ev_timer *w, int revents)
2931	{	3116	{
2932	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));
2933	}	3120	}
2934		3121
2935	void	3122	void
2936	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)
2937	{	3124	{

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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 1.281 by root, Mon Mar 16 21:15:06 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 1.281 by root, Mon Mar 16 21:15:06 2009 UTC