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

Comparing libev/ev.c (file contents):
Revision 1.299 by root, Tue Jul 14 00:09:59 2009 UTC vs.
Revision 1.328 by root, Sun Feb 14 19:23:19 2010 UTC

…		…
1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009,2010 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	*
110	# define EV_USE_EPOLL 0	110	# define EV_USE_EPOLL 0
111	# endif	111	# endif
112	# endif	112	# endif
113		113
114	# ifndef EV_USE_KQUEUE	114	# ifndef EV_USE_KQUEUE
115	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	115	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
116	# define EV_USE_KQUEUE 1	116	# define EV_USE_KQUEUE 1
117	# else	117	# else
118	# define EV_USE_KQUEUE 0	118	# define EV_USE_KQUEUE 0
119	# endif	119	# endif
120	# endif	120	# endif
…		…
133	# else	133	# else
134	# define EV_USE_INOTIFY 0	134	# define EV_USE_INOTIFY 0
135	# endif	135	# endif
136	# endif	136	# endif
137		137
		138	# ifndef EV_USE_SIGNALFD
		139	# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
		140	# define EV_USE_SIGNALFD 1
		141	# else
		142	# define EV_USE_SIGNALFD 0
		143	# endif
		144	# endif
		145
138	# ifndef EV_USE_EVENTFD	146	# ifndef EV_USE_EVENTFD
139	# if HAVE_EVENTFD	147	# if HAVE_EVENTFD
140	# define EV_USE_EVENTFD 1	148	# define EV_USE_EVENTFD 1
141	# else	149	# else
142	# define EV_USE_EVENTFD 0	150	# define EV_USE_EVENTFD 0
…		…
145		153
146	#endif	154	#endif
147		155
148	#include <math.h>	156	#include <math.h>
149	#include <stdlib.h>	157	#include <stdlib.h>
		158	#include <string.h>
150	#include <fcntl.h>	159	#include <fcntl.h>
151	#include <stddef.h>	160	#include <stddef.h>
152		161
153	#include <stdio.h>	162	#include <stdio.h>
154		163
155	#include <assert.h>	164	#include <assert.h>
156	#include <errno.h>	165	#include <errno.h>
157	#include <sys/types.h>	166	#include <sys/types.h>
158	#include <time.h>	167	#include <time.h>
		168	#include <limits.h>
159		169
160	#include <signal.h>	170	#include <signal.h>
161		171
162	#ifdef EV_H	172	#ifdef EV_H
163	# include EV_H	173	# include EV_H
…		…
178	# endif	188	# endif
179	#endif	189	#endif
180		190
181	/* this block tries to deduce configuration from header-defined symbols and defaults */	191	/* this block tries to deduce configuration from header-defined symbols and defaults */
182		192
		193	/* try to deduce the maximum number of signals on this platform */
		194	#if defined (EV_NSIG)
		195	/* use what's provided */
		196	#elif defined (NSIG)
		197	# define EV_NSIG (NSIG)
		198	#elif defined(_NSIG)
		199	# define EV_NSIG (_NSIG)
		200	#elif defined (SIGMAX)
		201	# define EV_NSIG (SIGMAX+1)
		202	#elif defined (SIG_MAX)
		203	# define EV_NSIG (SIG_MAX+1)
		204	#elif defined (_SIG_MAX)
		205	# define EV_NSIG (_SIG_MAX+1)
		206	#elif defined (MAXSIG)
		207	# define EV_NSIG (MAXSIG+1)
		208	#elif defined (MAX_SIG)
		209	# define EV_NSIG (MAX_SIG+1)
		210	#elif defined (SIGARRAYSIZE)
		211	# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
		212	#elif defined (_sys_nsig)
		213	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
		214	#else
		215	# error "unable to find value for NSIG, please report"
		216	/* to make it compile regardless, just remove the above line */
		217	# define EV_NSIG 65
		218	#endif
		219
183	#ifndef EV_USE_CLOCK_SYSCALL	220	#ifndef EV_USE_CLOCK_SYSCALL
184	# if __linux && __GLIBC__ >= 2	221	# if __linux && __GLIBC__ >= 2
185	# define EV_USE_CLOCK_SYSCALL 1	222	# define EV_USE_CLOCK_SYSCALL 1
186	# else	223	# else
187	# define EV_USE_CLOCK_SYSCALL 0	224	# define EV_USE_CLOCK_SYSCALL 0
…		…
263	#ifndef EV_USE_EVENTFD	300	#ifndef EV_USE_EVENTFD
264	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))	301	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265	# define EV_USE_EVENTFD 1	302	# define EV_USE_EVENTFD 1
266	# else	303	# else
267	# define EV_USE_EVENTFD 0	304	# define EV_USE_EVENTFD 0
		305	# endif
		306	#endif
		307
		308	#ifndef EV_USE_SIGNALFD
		309	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		310	# define EV_USE_SIGNALFD 1
		311	# else
		312	# define EV_USE_SIGNALFD 0
268	# endif	313	# endif
269	#endif	314	#endif
270		315
271	#if 0 /* debugging */	316	#if 0 /* debugging */
272	# define EV_VERIFY 3	317	# define EV_VERIFY 3
…		…
300	# endif	345	# endif
301	#endif	346	#endif
302		347
303	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	348	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
304		349
		350	#ifdef _AIX
		351	/* AIX has a completely broken poll.h header */
		352	# undef EV_USE_POLL
		353	# define EV_USE_POLL 0
		354	#endif
		355
305	#ifndef CLOCK_MONOTONIC	356	#ifndef CLOCK_MONOTONIC
306	# undef EV_USE_MONOTONIC	357	# undef EV_USE_MONOTONIC
307	# define EV_USE_MONOTONIC 0	358	# define EV_USE_MONOTONIC 0
308	#endif	359	#endif
309		360
…		…
339	#endif	390	#endif
340		391
341	#if EV_USE_EVENTFD	392	#if EV_USE_EVENTFD
342	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	393	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
343	# include <stdint.h>	394	# include <stdint.h>
		395	# ifndef EFD_NONBLOCK
		396	# define EFD_NONBLOCK O_NONBLOCK
		397	# endif
		398	# ifndef EFD_CLOEXEC
		399	# ifdef O_CLOEXEC
		400	# define EFD_CLOEXEC O_CLOEXEC
		401	# else
		402	# define EFD_CLOEXEC 02000000
		403	# endif
		404	# endif
344	# ifdef __cplusplus	405	# ifdef __cplusplus
345	extern "C" {	406	extern "C" {
346	# endif	407	# endif
347	int eventfd (unsigned int initval, int flags);	408	int eventfd (unsigned int initval, int flags);
348	# ifdef __cplusplus	409	# ifdef __cplusplus
349	}	410	}
350	# endif	411	# endif
351	#endif	412	#endif
		413
		414	#if EV_USE_SIGNALFD
		415	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		416	# include <stdint.h>
		417	# ifndef SFD_NONBLOCK
		418	# define SFD_NONBLOCK O_NONBLOCK
		419	# endif
		420	# ifndef SFD_CLOEXEC
		421	# ifdef O_CLOEXEC
		422	# define SFD_CLOEXEC O_CLOEXEC
		423	# else
		424	# define SFD_CLOEXEC 02000000
		425	# endif
		426	# endif
		427	# ifdef __cplusplus
		428	extern "C" {
		429	# endif
		430	int signalfd (int fd, const sigset_t *mask, int flags);
		431
		432	struct signalfd_siginfo
		433	{
		434	uint32_t ssi_signo;
		435	char pad[128 - sizeof (uint32_t)];
		436	};
		437	# ifdef __cplusplus
		438	}
		439	# endif
		440	#endif
		441
352		442
353	/**/	443	/**/
354		444
355	#if EV_VERIFY >= 3	445	#if EV_VERIFY >= 3
356	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)	446	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
…		…
368	*/	458	*/
369	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	459	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
370		460
371	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	461	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
372	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	462	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
373	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds, TODO */
374		463
375	#if __GNUC__ >= 4	464	#if __GNUC__ >= 4
376	# define expect(expr,value) __builtin_expect ((expr),(value))	465	# define expect(expr,value) __builtin_expect ((expr),(value))
377	# define noinline __attribute__ ((noinline))	466	# define noinline __attribute__ ((noinline))
378	#else	467	#else
…		…
417	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */	506	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
418	#endif	507	#endif
419		508
420	#if EV_USE_MONOTONIC	509	#if EV_USE_MONOTONIC
421	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	510	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		511	#endif
		512
		513	#ifndef EV_FD_TO_WIN32_HANDLE
		514	# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		515	#endif
		516	#ifndef EV_WIN32_HANDLE_TO_FD
		517	# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
		518	#endif
		519	#ifndef EV_WIN32_CLOSE_FD
		520	# define EV_WIN32_CLOSE_FD(fd) close (fd)
422	#endif	521	#endif
423		522
424	#ifdef _WIN32	523	#ifdef _WIN32
425	# include "ev_win32.c"	524	# include "ev_win32.c"
426	#endif	525	#endif
…		…
647		746
648	tv.tv_sec = (time_t)delay;	747	tv.tv_sec = (time_t)delay;
649	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	748	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
650		749
651	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */	750	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
652	/* somehting not guaranteed by newer posix versions, but guaranteed */	751	/* something not guaranteed by newer posix versions, but guaranteed */
653	/* by older ones */	752	/* by older ones */
654	select (0, 0, 0, 0, &tv);	753	select (0, 0, 0, 0, &tv);
655	#endif	754	#endif
656	}	755	}
657	}	756	}
…		…
819		918
820	#if EV_SELECT_IS_WINSOCKET	919	#if EV_SELECT_IS_WINSOCKET
821	if (events)	920	if (events)
822	{	921	{
823	unsigned long arg;	922	unsigned long arg;
824	#ifdef EV_FD_TO_WIN32_HANDLE
825	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	923	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
826	#else
827	anfd->handle = _get_osfhandle (fd);
828	#endif
829	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	924	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
830	}	925	}
831	#endif	926	#endif
832		927
833	{	928	{
…		…
876	/* check whether the given fd is atcually valid, for error recovery */	971	/* check whether the given fd is atcually valid, for error recovery */
877	inline_size int	972	inline_size int
878	fd_valid (int fd)	973	fd_valid (int fd)
879	{	974	{
880	#ifdef _WIN32	975	#ifdef _WIN32
881	return _get_osfhandle (fd) != -1;	976	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
882	#else	977	#else
883	return fcntl (fd, F_GETFD) != -1;	978	return fcntl (fd, F_GETFD) != -1;
884	#endif	979	#endif
885	}	980	}
886		981
…		…
904		999
905	for (fd = anfdmax; fd--; )	1000	for (fd = anfdmax; fd--; )
906	if (anfds [fd].events)	1001	if (anfds [fd].events)
907	{	1002	{
908	fd_kill (EV_A_ fd);	1003	fd_kill (EV_A_ fd);
909	return;	1004	break;
910	}	1005	}
911	}	1006	}
912		1007
913	/* usually called after fork if backend needs to re-arm all fds from scratch */	1008	/* usually called after fork if backend needs to re-arm all fds from scratch */
914	static void noinline	1009	static void noinline
…		…
1004		1099
1005	for (;;)	1100	for (;;)
1006	{	1101	{
1007	int c = k << 1;	1102	int c = k << 1;
1008		1103
1009	if (c > N + HEAP0 - 1)	1104	if (c >= N + HEAP0)
1010	break;	1105	break;
1011		1106
1012	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])	1107	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1013	? 1 : 0;	1108	? 1 : 0;
1014		1109
…		…
1050		1145
1051	/* move an element suitably so it is in a correct place */	1146	/* move an element suitably so it is in a correct place */
1052	inline_size void	1147	inline_size void
1053	adjustheap (ANHE *heap, int N, int k)	1148	adjustheap (ANHE *heap, int N, int k)
1054	{	1149	{
1055	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1150	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1056	upheap (heap, k);	1151	upheap (heap, k);
1057	else	1152	else
1058	downheap (heap, N, k);	1153	downheap (heap, N, k);
1059	}	1154	}
1060		1155
…		…
1073	/*****************************************************************************/	1168	/*****************************************************************************/
1074		1169
1075	/* associate signal watchers to a signal signal */	1170	/* associate signal watchers to a signal signal */
1076	typedef struct	1171	typedef struct
1077	{	1172	{
		1173	EV_ATOMIC_T pending;
		1174	#if EV_MULTIPLICITY
		1175	EV_P;
		1176	#endif
1078	WL head;	1177	WL head;
1079	EV_ATOMIC_T gotsig;
1080	} ANSIG;	1178	} ANSIG;
1081		1179
1082	static ANSIG *signals;	1180	static ANSIG signals [EV_NSIG - 1];
1083	static int signalmax;
1084
1085	static EV_ATOMIC_T gotsig;
1086		1181
1087	/*****************************************************************************/	1182	/*****************************************************************************/
1088		1183
1089	/* used to prepare libev internal fd's */	1184	/* used to prepare libev internal fd's */
1090	/* this is not fork-safe */	1185	/* this is not fork-safe */
1091	inline_speed void	1186	inline_speed void
1092	fd_intern (int fd)	1187	fd_intern (int fd)
1093	{	1188	{
1094	#ifdef _WIN32	1189	#ifdef _WIN32
1095	unsigned long arg = 1;	1190	unsigned long arg = 1;
1096	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1191	ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1097	#else	1192	#else
1098	fcntl (fd, F_SETFD, FD_CLOEXEC);	1193	fcntl (fd, F_SETFD, FD_CLOEXEC);
1099	fcntl (fd, F_SETFL, O_NONBLOCK);	1194	fcntl (fd, F_SETFL, O_NONBLOCK);
1100	#endif	1195	#endif
1101	}	1196	}
…		…
1104	evpipe_init (EV_P)	1199	evpipe_init (EV_P)
1105	{	1200	{
1106	if (!ev_is_active (&pipe_w))	1201	if (!ev_is_active (&pipe_w))
1107	{	1202	{
1108	#if EV_USE_EVENTFD	1203	#if EV_USE_EVENTFD
		1204	evfd = eventfd (0, EFD_NONBLOCK \| EFD_CLOEXEC);
		1205	if (evfd < 0 && errno == EINVAL)
1109	if ((evfd = eventfd (0, 0)) >= 0)	1206	evfd = eventfd (0, 0);
		1207
		1208	if (evfd >= 0)
1110	{	1209	{
1111	evpipe [0] = -1;	1210	evpipe [0] = -1;
1112	fd_intern (evfd);	1211	fd_intern (evfd); /* doing it twice doesn't hurt */
1113	ev_io_set (&pipe_w, evfd, EV_READ);	1212	ev_io_set (&pipe_w, evfd, EV_READ);
1114	}	1213	}
1115	else	1214	else
1116	#endif	1215	#endif
1117	{	1216	{
…		…
1154	/* called whenever the libev signal pipe */	1253	/* called whenever the libev signal pipe */
1155	/* got some events (signal, async) */	1254	/* got some events (signal, async) */
1156	static void	1255	static void
1157	pipecb (EV_P_ ev_io *iow, int revents)	1256	pipecb (EV_P_ ev_io *iow, int revents)
1158	{	1257	{
		1258	int i;
		1259
1159	#if EV_USE_EVENTFD	1260	#if EV_USE_EVENTFD
1160	if (evfd >= 0)	1261	if (evfd >= 0)
1161	{	1262	{
1162	uint64_t counter;	1263	uint64_t counter;
1163	read (evfd, &counter, sizeof (uint64_t));	1264	read (evfd, &counter, sizeof (uint64_t));
…		…
1167	{	1268	{
1168	char dummy;	1269	char dummy;
1169	read (evpipe [0], &dummy, 1);	1270	read (evpipe [0], &dummy, 1);
1170	}	1271	}
1171		1272
1172	if (gotsig && ev_is_default_loop (EV_A))	1273	if (sig_pending)
1173	{	1274	{
1174	int signum;	1275	sig_pending = 0;
1175	gotsig = 0;
1176		1276
1177	for (signum = signalmax; signum--; )	1277	for (i = EV_NSIG - 1; i--; )
1178	if (signals [signum].gotsig)	1278	if (expect_false (signals [i].pending))
1179	ev_feed_signal_event (EV_A_ signum + 1);	1279	ev_feed_signal_event (EV_A_ i + 1);
1180	}	1280	}
1181		1281
1182	#if EV_ASYNC_ENABLE	1282	#if EV_ASYNC_ENABLE
1183	if (gotasync)	1283	if (async_pending)
1184	{	1284	{
1185	int i;	1285	async_pending = 0;
1186	gotasync = 0;
1187		1286
1188	for (i = asynccnt; i--; )	1287	for (i = asynccnt; i--; )
1189	if (asyncs [i]->sent)	1288	if (asyncs [i]->sent)
1190	{	1289	{
1191	asyncs [i]->sent = 0;	1290	asyncs [i]->sent = 0;
…		…
1199		1298
1200	static void	1299	static void
1201	ev_sighandler (int signum)	1300	ev_sighandler (int signum)
1202	{	1301	{
1203	#if EV_MULTIPLICITY	1302	#if EV_MULTIPLICITY
1204	struct ev_loop *loop = &default_loop_struct;	1303	EV_P = signals [signum - 1].loop;
1205	#endif	1304	#endif
1206		1305
1207	#if _WIN32	1306	#ifdef _WIN32
1208	signal (signum, ev_sighandler);	1307	signal (signum, ev_sighandler);
1209	#endif	1308	#endif
1210		1309
1211	signals [signum - 1].gotsig = 1;	1310	signals [signum - 1].pending = 1;
1212	evpipe_write (EV_A_ &gotsig);	1311	evpipe_write (EV_A_ &sig_pending);
1213	}	1312	}
1214		1313
1215	void noinline	1314	void noinline
1216	ev_feed_signal_event (EV_P_ int signum)	1315	ev_feed_signal_event (EV_P_ int signum)
1217	{	1316	{
1218	WL w;	1317	WL w;
1219		1318
		1319	if (expect_false (signum <= 0 \|\| signum > EV_NSIG))
		1320	return;
		1321
		1322	--signum;
		1323
1220	#if EV_MULTIPLICITY	1324	#if EV_MULTIPLICITY
1221	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1325	/* it is permissible to try to feed a signal to the wrong loop */
1222	#endif	1326	/* or, likely more useful, feeding a signal nobody is waiting for */
1223		1327
1224	--signum;	1328	if (expect_false (signals [signum].loop != EV_A))
1225
1226	if (signum < 0 \|\| signum >= signalmax)
1227	return;	1329	return;
		1330	#endif
1228		1331
1229	signals [signum].gotsig = 0;	1332	signals [signum].pending = 0;
1230		1333
1231	for (w = signals [signum].head; w; w = w->next)	1334	for (w = signals [signum].head; w; w = w->next)
1232	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1335	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1233	}	1336	}
		1337
		1338	#if EV_USE_SIGNALFD
		1339	static void
		1340	sigfdcb (EV_P_ ev_io *iow, int revents)
		1341	{
		1342	struct signalfd_siginfo si[2], sip; / these structs are big */
		1343
		1344	for (;;)
		1345	{
		1346	ssize_t res = read (sigfd, si, sizeof (si));
		1347
		1348	/* not ISO-C, as res might be -1, but works with SuS */
		1349	for (sip = si; (char )sip < (char )si + res; ++sip)
		1350	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1351
		1352	if (res < (ssize_t)sizeof (si))
		1353	break;
		1354	}
		1355	}
		1356	#endif
1234		1357
1235	/*****************************************************************************/	1358	/*****************************************************************************/
1236		1359
1237	static WL childs [EV_PID_HASHSIZE];	1360	static WL childs [EV_PID_HASHSIZE];
1238		1361
…		…
1458	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1581	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1459	have_monotonic = 1;	1582	have_monotonic = 1;
1460	}	1583	}
1461	#endif	1584	#endif
1462		1585
		1586	/* pid check not overridable via env */
		1587	#ifndef _WIN32
		1588	if (flags & EVFLAG_FORKCHECK)
		1589	curpid = getpid ();
		1590	#endif
		1591
		1592	if (!(flags & EVFLAG_NOENV)
		1593	&& !enable_secure ()
		1594	&& getenv ("LIBEV_FLAGS"))
		1595	flags = atoi (getenv ("LIBEV_FLAGS"));
		1596
1463	ev_rt_now = ev_time ();	1597	ev_rt_now = ev_time ();
1464	mn_now = get_clock ();	1598	mn_now = get_clock ();
1465	now_floor = mn_now;	1599	now_floor = mn_now;
1466	rtmn_diff = ev_rt_now - mn_now;	1600	rtmn_diff = ev_rt_now - mn_now;
1467	#if EV_MINIMAL < 2	1601	#if EV_MINIMAL < 2
…		…
1470		1604
1471	io_blocktime = 0.;	1605	io_blocktime = 0.;
1472	timeout_blocktime = 0.;	1606	timeout_blocktime = 0.;
1473	backend = 0;	1607	backend = 0;
1474	backend_fd = -1;	1608	backend_fd = -1;
1475	gotasync = 0;	1609	sig_pending = 0;
		1610	#if EV_ASYNC_ENABLE
		1611	async_pending = 0;
		1612	#endif
1476	#if EV_USE_INOTIFY	1613	#if EV_USE_INOTIFY
1477	fs_fd = -2;	1614	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1478	#endif	1615	#endif
1479		1616	#if EV_USE_SIGNALFD
1480	/* pid check not overridable via env */	1617	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1481	#ifndef _WIN32
1482	if (flags & EVFLAG_FORKCHECK)
1483	curpid = getpid ();
1484	#endif	1618	#endif
1485
1486	if (!(flags & EVFLAG_NOENV)
1487	&& !enable_secure ()
1488	&& getenv ("LIBEV_FLAGS"))
1489	flags = atoi (getenv ("LIBEV_FLAGS"));
1490		1619
1491	if (!(flags & 0x0000ffffU))	1620	if (!(flags & 0x0000ffffU))
1492	flags \|= ev_recommended_backends ();	1621	flags \|= ev_recommended_backends ();
1493		1622
1494	#if EV_USE_PORT	1623	#if EV_USE_PORT
…		…
1520	{	1649	{
1521	int i;	1650	int i;
1522		1651
1523	if (ev_is_active (&pipe_w))	1652	if (ev_is_active (&pipe_w))
1524	{	1653	{
1525	ev_ref (EV_A); /* signal watcher */	1654	/ev_ref (EV_A);/
1526	ev_io_stop (EV_A_ &pipe_w);	1655	/ev_io_stop (EV_A_ &pipe_w);/
1527		1656
1528	#if EV_USE_EVENTFD	1657	#if EV_USE_EVENTFD
1529	if (evfd >= 0)	1658	if (evfd >= 0)
1530	close (evfd);	1659	close (evfd);
1531	#endif	1660	#endif
1532		1661
1533	if (evpipe [0] >= 0)	1662	if (evpipe [0] >= 0)
1534	{	1663	{
1535	close (evpipe [0]);	1664	EV_WIN32_CLOSE_FD (evpipe [0]);
1536	close (evpipe [1]);	1665	EV_WIN32_CLOSE_FD (evpipe [1]);
1537	}	1666	}
1538	}	1667	}
		1668
		1669	#if EV_USE_SIGNALFD
		1670	if (ev_is_active (&sigfd_w))
		1671	close (sigfd);
		1672	#endif
1539		1673
1540	#if EV_USE_INOTIFY	1674	#if EV_USE_INOTIFY
1541	if (fs_fd >= 0)	1675	if (fs_fd >= 0)
1542	close (fs_fd);	1676	close (fs_fd);
1543	#endif	1677	#endif
…		…
1567	#if EV_IDLE_ENABLE	1701	#if EV_IDLE_ENABLE
1568	array_free (idle, [i]);	1702	array_free (idle, [i]);
1569	#endif	1703	#endif
1570	}	1704	}
1571		1705
1572	ev_free (anfds); anfdmax = 0;	1706	ev_free (anfds); anfds = 0; anfdmax = 0;
1573		1707
1574	/* have to use the microsoft-never-gets-it-right macro */	1708	/* have to use the microsoft-never-gets-it-right macro */
1575	array_free (rfeed, EMPTY);	1709	array_free (rfeed, EMPTY);
1576	array_free (fdchange, EMPTY);	1710	array_free (fdchange, EMPTY);
1577	array_free (timer, EMPTY);	1711	array_free (timer, EMPTY);
…		…
1612		1746
1613	if (ev_is_active (&pipe_w))	1747	if (ev_is_active (&pipe_w))
1614	{	1748	{
1615	/* this "locks" the handlers against writing to the pipe */	1749	/* this "locks" the handlers against writing to the pipe */
1616	/* while we modify the fd vars */	1750	/* while we modify the fd vars */
1617	gotsig = 1;	1751	sig_pending = 1;
1618	#if EV_ASYNC_ENABLE	1752	#if EV_ASYNC_ENABLE
1619	gotasync = 1;	1753	async_pending = 1;
1620	#endif	1754	#endif
1621		1755
1622	ev_ref (EV_A);	1756	ev_ref (EV_A);
1623	ev_io_stop (EV_A_ &pipe_w);	1757	ev_io_stop (EV_A_ &pipe_w);
1624		1758
…		…
1627	close (evfd);	1761	close (evfd);
1628	#endif	1762	#endif
1629		1763
1630	if (evpipe [0] >= 0)	1764	if (evpipe [0] >= 0)
1631	{	1765	{
1632	close (evpipe [0]);	1766	EV_WIN32_CLOSE_FD (evpipe [0]);
1633	close (evpipe [1]);	1767	EV_WIN32_CLOSE_FD (evpipe [1]);
1634	}	1768	}
1635		1769
1636	evpipe_init (EV_A);	1770	evpipe_init (EV_A);
1637	/* now iterate over everything, in case we missed something */	1771	/* now iterate over everything, in case we missed something */
1638	pipecb (EV_A_ &pipe_w, EV_READ);	1772	pipecb (EV_A_ &pipe_w, EV_READ);
…		…
1644	#if EV_MULTIPLICITY	1778	#if EV_MULTIPLICITY
1645		1779
1646	struct ev_loop *	1780	struct ev_loop *
1647	ev_loop_new (unsigned int flags)	1781	ev_loop_new (unsigned int flags)
1648	{	1782	{
1649	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));	1783	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1650		1784
1651	memset (loop, 0, sizeof (struct ev_loop));	1785	memset (EV_A, 0, sizeof (struct ev_loop));
1652
1653	loop_init (EV_A_ flags);	1786	loop_init (EV_A_ flags);
1654		1787
1655	if (ev_backend (EV_A))	1788	if (ev_backend (EV_A))
1656	return loop;	1789	return EV_A;
1657		1790
1658	return 0;	1791	return 0;
1659	}	1792	}
1660		1793
1661	void	1794	void
…		…
1765	assert (checkmax >= checkcnt);	1898	assert (checkmax >= checkcnt);
1766	array_verify (EV_A_ (W *)checks, checkcnt);	1899	array_verify (EV_A_ (W *)checks, checkcnt);
1767		1900
1768	# if 0	1901	# if 0
1769	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	1902	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
1770	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)	1903	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1771	# endif	1904	# endif
1772	#endif	1905	#endif
1773	}	1906	}
1774	#endif	1907	#endif
1775		1908
…		…
1782	#endif	1915	#endif
1783	{	1916	{
1784	if (!ev_default_loop_ptr)	1917	if (!ev_default_loop_ptr)
1785	{	1918	{
1786	#if EV_MULTIPLICITY	1919	#if EV_MULTIPLICITY
1787	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1920	EV_P = ev_default_loop_ptr = &default_loop_struct;
1788	#else	1921	#else
1789	ev_default_loop_ptr = 1;	1922	ev_default_loop_ptr = 1;
1790	#endif	1923	#endif
1791		1924
1792	loop_init (EV_A_ flags);	1925	loop_init (EV_A_ flags);
…		…
1809		1942
1810	void	1943	void
1811	ev_default_destroy (void)	1944	ev_default_destroy (void)
1812	{	1945	{
1813	#if EV_MULTIPLICITY	1946	#if EV_MULTIPLICITY
1814	struct ev_loop *loop = ev_default_loop_ptr;	1947	EV_P = ev_default_loop_ptr;
1815	#endif	1948	#endif
1816		1949
1817	ev_default_loop_ptr = 0;	1950	ev_default_loop_ptr = 0;
1818		1951
1819	#ifndef _WIN32	1952	#ifndef _WIN32
…		…
1826		1959
1827	void	1960	void
1828	ev_default_fork (void)	1961	ev_default_fork (void)
1829	{	1962	{
1830	#if EV_MULTIPLICITY	1963	#if EV_MULTIPLICITY
1831	struct ev_loop *loop = ev_default_loop_ptr;	1964	EV_P = ev_default_loop_ptr;
1832	#endif	1965	#endif
1833		1966
1834	postfork = 1; /* must be in line with ev_loop_fork */	1967	postfork = 1; /* must be in line with ev_loop_fork */
1835	}	1968	}
1836		1969
…		…
1838		1971
1839	void	1972	void
1840	ev_invoke (EV_P_ void *w, int revents)	1973	ev_invoke (EV_P_ void *w, int revents)
1841	{	1974	{
1842	EV_CB_INVOKE ((W)w, revents);	1975	EV_CB_INVOKE ((W)w, revents);
		1976	}
		1977
		1978	unsigned int
		1979	ev_pending_count (EV_P)
		1980	{
		1981	int pri;
		1982	unsigned int count = 0;
		1983
		1984	for (pri = NUMPRI; pri--; )
		1985	count += pendingcnt [pri];
		1986
		1987	return count;
1843	}	1988	}
1844		1989
1845	void noinline	1990	void noinline
1846	ev_invoke_pending (EV_P)	1991	ev_invoke_pending (EV_P)
1847	{	1992	{
…		…
2019	ANHE_at_cache (*he);	2164	ANHE_at_cache (*he);
2020	}	2165	}
2021	}	2166	}
2022		2167
2023	/* fetch new monotonic and realtime times from the kernel */	2168	/* fetch new monotonic and realtime times from the kernel */
2024	/* also detetc if there was a timejump, and act accordingly */	2169	/* also detect if there was a timejump, and act accordingly */
2025	inline_speed void	2170	inline_speed void
2026	time_update (EV_P_ ev_tstamp max_block)	2171	time_update (EV_P_ ev_tstamp max_block)
2027	{	2172	{
2028	#if EV_USE_MONOTONIC	2173	#if EV_USE_MONOTONIC
2029	if (expect_true (have_monotonic))	2174	if (expect_true (have_monotonic))
…		…
2290	inline_size void	2435	inline_size void
2291	wlist_del (WL *head, WL elem)	2436	wlist_del (WL *head, WL elem)
2292	{	2437	{
2293	while (*head)	2438	while (*head)
2294	{	2439	{
2295	if (*head == elem)	2440	if (expect_true (*head == elem))
2296	{	2441	{
2297	*head = elem->next;	2442	*head = elem->next;
2298	return;	2443	break;
2299	}	2444	}
2300		2445
2301	head = &(*head)->next;	2446	head = &(*head)->next;
2302	}	2447	}
2303	}	2448	}
…		…
2363		2508
2364	if (expect_false (ev_is_active (w)))	2509	if (expect_false (ev_is_active (w)))
2365	return;	2510	return;
2366		2511
2367	assert (("libev: ev_io_start called with negative fd", fd >= 0));	2512	assert (("libev: ev_io_start called with negative fd", fd >= 0));
2368	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET \| EV_READ \| EV_WRITE))));	2513	assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET \| EV_READ \| EV_WRITE))));
2369		2514
2370	EV_FREQUENT_CHECK;	2515	EV_FREQUENT_CHECK;
2371		2516
2372	ev_start (EV_A_ (W)w, 1);	2517	ev_start (EV_A_ (W)w, 1);
2373	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2518	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
…		…
2443	timers [active] = timers [timercnt + HEAP0];	2588	timers [active] = timers [timercnt + HEAP0];
2444	adjustheap (timers, timercnt, active);	2589	adjustheap (timers, timercnt, active);
2445	}	2590	}
2446	}	2591	}
2447		2592
2448	EV_FREQUENT_CHECK;
2449
2450	ev_at (w) -= mn_now;	2593	ev_at (w) -= mn_now;
2451		2594
2452	ev_stop (EV_A_ (W)w);	2595	ev_stop (EV_A_ (W)w);
		2596
		2597	EV_FREQUENT_CHECK;
2453	}	2598	}
2454		2599
2455	void noinline	2600	void noinline
2456	ev_timer_again (EV_P_ ev_timer *w)	2601	ev_timer_again (EV_P_ ev_timer *w)
2457	{	2602	{
…		…
2475	}	2620	}
2476		2621
2477	EV_FREQUENT_CHECK;	2622	EV_FREQUENT_CHECK;
2478	}	2623	}
2479		2624
		2625	ev_tstamp
		2626	ev_timer_remaining (EV_P_ ev_timer *w)
		2627	{
		2628	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
		2629	}
		2630
2480	#if EV_PERIODIC_ENABLE	2631	#if EV_PERIODIC_ENABLE
2481	void noinline	2632	void noinline
2482	ev_periodic_start (EV_P_ ev_periodic *w)	2633	ev_periodic_start (EV_P_ ev_periodic *w)
2483	{	2634	{
2484	if (expect_false (ev_is_active (w)))	2635	if (expect_false (ev_is_active (w)))
…		…
2530	periodics [active] = periodics [periodiccnt + HEAP0];	2681	periodics [active] = periodics [periodiccnt + HEAP0];
2531	adjustheap (periodics, periodiccnt, active);	2682	adjustheap (periodics, periodiccnt, active);
2532	}	2683	}
2533	}	2684	}
2534		2685
2535	EV_FREQUENT_CHECK;
2536
2537	ev_stop (EV_A_ (W)w);	2686	ev_stop (EV_A_ (W)w);
		2687
		2688	EV_FREQUENT_CHECK;
2538	}	2689	}
2539		2690
2540	void noinline	2691	void noinline
2541	ev_periodic_again (EV_P_ ev_periodic *w)	2692	ev_periodic_again (EV_P_ ev_periodic *w)
2542	{	2693	{
…		…
2551	#endif	2702	#endif
2552		2703
2553	void noinline	2704	void noinline
2554	ev_signal_start (EV_P_ ev_signal *w)	2705	ev_signal_start (EV_P_ ev_signal *w)
2555	{	2706	{
2556	#if EV_MULTIPLICITY
2557	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2558	#endif
2559	if (expect_false (ev_is_active (w)))	2707	if (expect_false (ev_is_active (w)))
2560	return;	2708	return;
2561		2709
2562	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));	2710	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2563		2711
2564	evpipe_init (EV_A);	2712	#if EV_MULTIPLICITY
		2713	assert (("libev: a signal must not be attached to two different loops",
		2714	!signals [w->signum - 1].loop \|\| signals [w->signum - 1].loop == loop));
2565		2715
2566	EV_FREQUENT_CHECK;	2716	signals [w->signum - 1].loop = EV_A;
		2717	#endif
2567		2718
		2719	EV_FREQUENT_CHECK;
		2720
		2721	#if EV_USE_SIGNALFD
		2722	if (sigfd == -2)
2568	{	2723	{
2569	#ifndef _WIN32	2724	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK \| SFD_CLOEXEC);
2570	sigset_t full, prev;	2725	if (sigfd < 0 && errno == EINVAL)
2571	sigfillset (&full);	2726	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2572	sigprocmask (SIG_SETMASK, &full, &prev);
2573	#endif
2574		2727
2575	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);	2728	if (sigfd >= 0)
		2729	{
		2730	fd_intern (sigfd); /* doing it twice will not hurt */
2576		2731
2577	#ifndef _WIN32	2732	sigemptyset (&sigfd_set);
2578	sigprocmask (SIG_SETMASK, &prev, 0);	2733
2579	#endif	2734	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2735	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2736	ev_io_start (EV_A_ &sigfd_w);
		2737	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2738	}
2580	}	2739	}
		2740
		2741	if (sigfd >= 0)
		2742	{
		2743	/* TODO: check .head */
		2744	sigaddset (&sigfd_set, w->signum);
		2745	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2746
		2747	signalfd (sigfd, &sigfd_set, 0);
		2748	}
		2749	#endif
2581		2750
2582	ev_start (EV_A_ (W)w, 1);	2751	ev_start (EV_A_ (W)w, 1);
2583	wlist_add (&signals [w->signum - 1].head, (WL)w);	2752	wlist_add (&signals [w->signum - 1].head, (WL)w);
2584		2753
2585	if (!((WL)w)->next)	2754	if (!((WL)w)->next)
		2755	# if EV_USE_SIGNALFD
		2756	if (sigfd < 0) /TODO/
		2757	# endif
2586	{	2758	{
2587	#if _WIN32	2759	# ifdef _WIN32
		2760	evpipe_init (EV_A);
		2761
2588	signal (w->signum, ev_sighandler);	2762	signal (w->signum, ev_sighandler);
2589	#else	2763	# else
2590	struct sigaction sa = { };	2764	struct sigaction sa;
		2765
		2766	evpipe_init (EV_A);
		2767
2591	sa.sa_handler = ev_sighandler;	2768	sa.sa_handler = ev_sighandler;
2592	sigfillset (&sa.sa_mask);	2769	sigfillset (&sa.sa_mask);
2593	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2770	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2594	sigaction (w->signum, &sa, 0);	2771	sigaction (w->signum, &sa, 0);
		2772
		2773	sigemptyset (&sa.sa_mask);
		2774	sigaddset (&sa.sa_mask, w->signum);
		2775	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2595	#endif	2776	#endif
2596	}	2777	}
2597		2778
2598	EV_FREQUENT_CHECK;	2779	EV_FREQUENT_CHECK;
2599	}	2780	}
2600		2781
2601	void noinline	2782	void noinline
…		…
2609		2790
2610	wlist_del (&signals [w->signum - 1].head, (WL)w);	2791	wlist_del (&signals [w->signum - 1].head, (WL)w);
2611	ev_stop (EV_A_ (W)w);	2792	ev_stop (EV_A_ (W)w);
2612		2793
2613	if (!signals [w->signum - 1].head)	2794	if (!signals [w->signum - 1].head)
		2795	{
		2796	#if EV_MULTIPLICITY
		2797	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2798	#endif
		2799	#if EV_USE_SIGNALFD
		2800	if (sigfd >= 0)
		2801	{
		2802	sigset_t ss;
		2803
		2804	sigemptyset (&ss);
		2805	sigaddset (&ss, w->signum);
		2806	sigdelset (&sigfd_set, w->signum);
		2807
		2808	signalfd (sigfd, &sigfd_set, 0);
		2809	sigprocmask (SIG_UNBLOCK, &ss, 0);
		2810	}
		2811	else
		2812	#endif
2614	signal (w->signum, SIG_DFL);	2813	signal (w->signum, SIG_DFL);
		2814	}
2615		2815
2616	EV_FREQUENT_CHECK;	2816	EV_FREQUENT_CHECK;
2617	}	2817	}
2618		2818
2619	void	2819	void
…		…
2660	#define MIN_STAT_INTERVAL 0.1074891	2860	#define MIN_STAT_INTERVAL 0.1074891
2661		2861
2662	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2862	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2663		2863
2664	#if EV_USE_INOTIFY	2864	#if EV_USE_INOTIFY
2665	# define EV_INOTIFY_BUFSIZE 8192	2865
		2866	/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
		2867	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2666		2868
2667	static void noinline	2869	static void noinline
2668	infy_add (EV_P_ ev_stat *w)	2870	infy_add (EV_P_ ev_stat *w)
2669	{	2871	{
2670	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);	2872	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);
2671		2873
2672	if (w->wd < 0)	2874	if (w->wd >= 0)
		2875	{
		2876	struct statfs sfs;
		2877
		2878	/* now local changes will be tracked by inotify, but remote changes won't */
		2879	/* unless the filesystem is known to be local, we therefore still poll */
		2880	/* also do poll on <2.6.25, but with normal frequency */
		2881
		2882	if (!fs_2625)
		2883	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		2884	else if (!statfs (w->path, &sfs)
		2885	&& (sfs.f_type == 0x1373 /* devfs */
		2886	\|\| sfs.f_type == 0xEF53 /* ext2/3 */
		2887	\|\| sfs.f_type == 0x3153464a /* jfs */
		2888	\|\| sfs.f_type == 0x52654973 /* reiser3 */
		2889	\|\| sfs.f_type == 0x01021994 /* tempfs */
		2890	\|\| sfs.f_type == 0x58465342 /* xfs */))
		2891	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
		2892	else
		2893	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2673	{	2894	}
		2895	else
		2896	{
		2897	/* can't use inotify, continue to stat */
2674	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;	2898	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2675	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2676		2899
2677	/* monitor some parent directory for speedup hints */	2900	/* if path is not there, monitor some parent directory for speedup hints */
2678	/* note that exceeding the hardcoded path limit is not a correctness issue, */	2901	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2679	/* but an efficiency issue only */	2902	/* but an efficiency issue only */
2680	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)	2903	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)
2681	{	2904	{
2682	char path [4096];	2905	char path [4096];
…		…
2698	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));	2921	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));
2699	}	2922	}
2700	}	2923	}
2701		2924
2702	if (w->wd >= 0)	2925	if (w->wd >= 0)
2703	{
2704	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2926	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2705		2927
2706	/* now local changes will be tracked by inotify, but remote changes won't */	2928	/* now re-arm timer, if required */
2707	/* unless the filesystem it known to be local, we therefore still poll */	2929	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2708	/* also do poll on <2.6.25, but with normal frequency */
2709	struct statfs sfs;
2710
2711	if (fs_2625 && !statfs (w->path, &sfs))
2712	if (sfs.f_type == 0x1373 /* devfs */
2713	\|\| sfs.f_type == 0xEF53 /* ext2/3 */
2714	\|\| sfs.f_type == 0x3153464a /* jfs */
2715	\|\| sfs.f_type == 0x52654973 /* reiser3 */
2716	\|\| sfs.f_type == 0x01021994 /* tempfs */
2717	\|\| sfs.f_type == 0x58465342 /* xfs */)
2718	return;
2719
2720	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2721	ev_timer_again (EV_A_ &w->timer);	2930	ev_timer_again (EV_A_ &w->timer);
2722	}	2931	if (ev_is_active (&w->timer)) ev_unref (EV_A);
2723	}	2932	}
2724		2933
2725	static void noinline	2934	static void noinline
2726	infy_del (EV_P_ ev_stat *w)	2935	infy_del (EV_P_ ev_stat *w)
2727	{	2936	{
…		…
2772		2981
2773	static void	2982	static void
2774	infy_cb (EV_P_ ev_io *w, int revents)	2983	infy_cb (EV_P_ ev_io *w, int revents)
2775	{	2984	{
2776	char buf [EV_INOTIFY_BUFSIZE];	2985	char buf [EV_INOTIFY_BUFSIZE];
2777	struct inotify_event ev = (struct inotify_event )buf;
2778	int ofs;	2986	int ofs;
2779	int len = read (fs_fd, buf, sizeof (buf));	2987	int len = read (fs_fd, buf, sizeof (buf));
2780		2988
2781	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2989	for (ofs = 0; ofs < len; )
		2990	{
		2991	struct inotify_event ev = (struct inotify_event )(buf + ofs);
2782	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2992	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		2993	ofs += sizeof (struct inotify_event) + ev->len;
		2994	}
2783	}	2995	}
2784		2996
2785	inline_size void	2997	inline_size void
2786	check_2625 (EV_P)	2998	check_2625 (EV_P)
2787	{	2999	{
…		…
2803	return;	3015	return;
2804		3016
2805	fs_2625 = 1;	3017	fs_2625 = 1;
2806	}	3018	}
2807		3019
		3020	inline_size int
		3021	infy_newfd (void)
		3022	{
		3023	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3024	int fd = inotify_init1 (IN_CLOEXEC \| IN_NONBLOCK);
		3025	if (fd >= 0)
		3026	return fd;
		3027	#endif
		3028	return inotify_init ();
		3029	}
		3030
2808	inline_size void	3031	inline_size void
2809	infy_init (EV_P)	3032	infy_init (EV_P)
2810	{	3033	{
2811	if (fs_fd != -2)	3034	if (fs_fd != -2)
2812	return;	3035	return;
2813		3036
2814	fs_fd = -1;	3037	fs_fd = -1;
2815		3038
2816	check_2625 (EV_A);	3039	check_2625 (EV_A);
2817		3040
2818	fs_fd = inotify_init ();	3041	fs_fd = infy_newfd ();
2819		3042
2820	if (fs_fd >= 0)	3043	if (fs_fd >= 0)
2821	{	3044	{
		3045	fd_intern (fs_fd);
2822	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3046	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2823	ev_set_priority (&fs_w, EV_MAXPRI);	3047	ev_set_priority (&fs_w, EV_MAXPRI);
2824	ev_io_start (EV_A_ &fs_w);	3048	ev_io_start (EV_A_ &fs_w);
		3049	ev_unref (EV_A);
2825	}	3050	}
2826	}	3051	}
2827		3052
2828	inline_size void	3053	inline_size void
2829	infy_fork (EV_P)	3054	infy_fork (EV_P)
…		…
2831	int slot;	3056	int slot;
2832		3057
2833	if (fs_fd < 0)	3058	if (fs_fd < 0)
2834	return;	3059	return;
2835		3060
		3061	ev_ref (EV_A);
		3062	ev_io_stop (EV_A_ &fs_w);
2836	close (fs_fd);	3063	close (fs_fd);
2837	fs_fd = inotify_init ();	3064	fs_fd = infy_newfd ();
		3065
		3066	if (fs_fd >= 0)
		3067	{
		3068	fd_intern (fs_fd);
		3069	ev_io_set (&fs_w, fs_fd, EV_READ);
		3070	ev_io_start (EV_A_ &fs_w);
		3071	ev_unref (EV_A);
		3072	}
2838		3073
2839	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3074	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2840	{	3075	{
2841	WL w_ = fs_hash [slot].head;	3076	WL w_ = fs_hash [slot].head;
2842	fs_hash [slot].head = 0;	3077	fs_hash [slot].head = 0;
…		…
2849	w->wd = -1;	3084	w->wd = -1;
2850		3085
2851	if (fs_fd >= 0)	3086	if (fs_fd >= 0)
2852	infy_add (EV_A_ w); /* re-add, no matter what */	3087	infy_add (EV_A_ w); /* re-add, no matter what */
2853	else	3088	else
		3089	{
		3090	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3091	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2854	ev_timer_again (EV_A_ &w->timer);	3092	ev_timer_again (EV_A_ &w->timer);
		3093	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		3094	}
2855	}	3095	}
2856	}	3096	}
2857	}	3097	}
2858		3098
2859	#endif	3099	#endif
…		…
2876	static void noinline	3116	static void noinline
2877	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	3117	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2878	{	3118	{
2879	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));	3119	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
2880		3120
2881	/* we copy this here each the time so that */	3121	ev_statdata prev = w->attr;
2882	/* prev has the old value when the callback gets invoked */
2883	w->prev = w->attr;
2884	ev_stat_stat (EV_A_ w);	3122	ev_stat_stat (EV_A_ w);
2885		3123
2886	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */	3124	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2887	if (	3125	if (
2888	w->prev.st_dev != w->attr.st_dev	3126	prev.st_dev != w->attr.st_dev
2889	\|\| w->prev.st_ino != w->attr.st_ino	3127	\|\| prev.st_ino != w->attr.st_ino
2890	\|\| w->prev.st_mode != w->attr.st_mode	3128	\|\| prev.st_mode != w->attr.st_mode
2891	\|\| w->prev.st_nlink != w->attr.st_nlink	3129	\|\| prev.st_nlink != w->attr.st_nlink
2892	\|\| w->prev.st_uid != w->attr.st_uid	3130	\|\| prev.st_uid != w->attr.st_uid
2893	\|\| w->prev.st_gid != w->attr.st_gid	3131	\|\| prev.st_gid != w->attr.st_gid
2894	\|\| w->prev.st_rdev != w->attr.st_rdev	3132	\|\| prev.st_rdev != w->attr.st_rdev
2895	\|\| w->prev.st_size != w->attr.st_size	3133	\|\| prev.st_size != w->attr.st_size
2896	\|\| w->prev.st_atime != w->attr.st_atime	3134	\|\| prev.st_atime != w->attr.st_atime
2897	\|\| w->prev.st_mtime != w->attr.st_mtime	3135	\|\| prev.st_mtime != w->attr.st_mtime
2898	\|\| w->prev.st_ctime != w->attr.st_ctime	3136	\|\| prev.st_ctime != w->attr.st_ctime
2899	) {	3137	) {
		3138	/* we only update w->prev on actual differences */
		3139	/* in case we test more often than invoke the callback, */
		3140	/* to ensure that prev is always different to attr */
		3141	w->prev = prev;
		3142
2900	#if EV_USE_INOTIFY	3143	#if EV_USE_INOTIFY
2901	if (fs_fd >= 0)	3144	if (fs_fd >= 0)
2902	{	3145	{
2903	infy_del (EV_A_ w);	3146	infy_del (EV_A_ w);
2904	infy_add (EV_A_ w);	3147	infy_add (EV_A_ w);
…		…
2929		3172
2930	if (fs_fd >= 0)	3173	if (fs_fd >= 0)
2931	infy_add (EV_A_ w);	3174	infy_add (EV_A_ w);
2932	else	3175	else
2933	#endif	3176	#endif
		3177	{
2934	ev_timer_again (EV_A_ &w->timer);	3178	ev_timer_again (EV_A_ &w->timer);
		3179	ev_unref (EV_A);
		3180	}
2935		3181
2936	ev_start (EV_A_ (W)w, 1);	3182	ev_start (EV_A_ (W)w, 1);
2937		3183
2938	EV_FREQUENT_CHECK;	3184	EV_FREQUENT_CHECK;
2939	}	3185	}
…		…
2948	EV_FREQUENT_CHECK;	3194	EV_FREQUENT_CHECK;
2949		3195
2950	#if EV_USE_INOTIFY	3196	#if EV_USE_INOTIFY
2951	infy_del (EV_A_ w);	3197	infy_del (EV_A_ w);
2952	#endif	3198	#endif
		3199
		3200	if (ev_is_active (&w->timer))
		3201	{
		3202	ev_ref (EV_A);
2953	ev_timer_stop (EV_A_ &w->timer);	3203	ev_timer_stop (EV_A_ &w->timer);
		3204	}
2954		3205
2955	ev_stop (EV_A_ (W)w);	3206	ev_stop (EV_A_ (W)w);
2956		3207
2957	EV_FREQUENT_CHECK;	3208	EV_FREQUENT_CHECK;
2958	}	3209	}
…		…
3099	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3350	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3100	{	3351	{
3101	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));	3352	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
3102		3353
3103	{	3354	{
3104	struct ev_loop *loop = w->other;	3355	EV_P = w->other;
3105		3356
3106	while (fdchangecnt)	3357	while (fdchangecnt)
3107	{	3358	{
3108	fd_reify (EV_A);	3359	fd_reify (EV_A);
3109	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3360	ev_loop (EV_A_ EVLOOP_NONBLOCK);
…		…
3117	ev_embed w = (ev_embed )(((char *)fork_w) - offsetof (ev_embed, fork));	3368	ev_embed w = (ev_embed )(((char *)fork_w) - offsetof (ev_embed, fork));
3118		3369
3119	ev_embed_stop (EV_A_ w);	3370	ev_embed_stop (EV_A_ w);
3120		3371
3121	{	3372	{
3122	struct ev_loop *loop = w->other;	3373	EV_P = w->other;
3123		3374
3124	ev_loop_fork (EV_A);	3375	ev_loop_fork (EV_A);
3125	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3376	ev_loop (EV_A_ EVLOOP_NONBLOCK);
3126	}	3377	}
3127		3378
…		…
3141	{	3392	{
3142	if (expect_false (ev_is_active (w)))	3393	if (expect_false (ev_is_active (w)))
3143	return;	3394	return;
3144		3395
3145	{	3396	{
3146	struct ev_loop *loop = w->other;	3397	EV_P = w->other;
3147	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3398	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3148	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3399	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3149	}	3400	}
3150		3401
3151	EV_FREQUENT_CHECK;	3402	EV_FREQUENT_CHECK;
…		…
3178		3429
3179	ev_io_stop (EV_A_ &w->io);	3430	ev_io_stop (EV_A_ &w->io);
3180	ev_prepare_stop (EV_A_ &w->prepare);	3431	ev_prepare_stop (EV_A_ &w->prepare);
3181	ev_fork_stop (EV_A_ &w->fork);	3432	ev_fork_stop (EV_A_ &w->fork);
3182		3433
		3434	ev_stop (EV_A_ (W)w);
		3435
3183	EV_FREQUENT_CHECK;	3436	EV_FREQUENT_CHECK;
3184	}	3437	}
3185	#endif	3438	#endif
3186		3439
3187	#if EV_FORK_ENABLE	3440	#if EV_FORK_ENABLE
…		…
3263		3516
3264	void	3517	void
3265	ev_async_send (EV_P_ ev_async *w)	3518	ev_async_send (EV_P_ ev_async *w)
3266	{	3519	{
3267	w->sent = 1;	3520	w->sent = 1;
3268	evpipe_write (EV_A_ &gotasync);	3521	evpipe_write (EV_A_ &async_pending);
3269	}	3522	}
3270	#endif	3523	#endif
3271		3524
3272	/*****************************************************************************/	3525	/*****************************************************************************/
3273		3526
…		…
3422	if (types & EV_CHECK)	3675	if (types & EV_CHECK)
3423	for (i = checkcnt; i--; )	3676	for (i = checkcnt; i--; )
3424	cb (EV_A_ EV_CHECK, checks [i]);	3677	cb (EV_A_ EV_CHECK, checks [i]);
3425		3678
3426	if (types & EV_SIGNAL)	3679	if (types & EV_SIGNAL)
3427	for (i = 0; i < signalmax; ++i)	3680	for (i = 0; i < EV_NSIG - 1; ++i)
3428	for (wl = signals [i].head; wl; )	3681	for (wl = signals [i].head; wl; )
3429	{	3682	{
3430	wn = wl->next;	3683	wn = wl->next;
3431	cb (EV_A_ EV_SIGNAL, wl);	3684	cb (EV_A_ EV_SIGNAL, wl);
3432	wl = wn;	3685	wl = wn;

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+Removed lines
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+Changed lines
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Comparing libev/ev.c (file contents): Revision 1.299 by root, Tue Jul 14 00:09:59 2009 UTC vs. Revision 1.328 by root, Sun Feb 14 19:23:19 2010 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.299 by root, Tue Jul 14 00:09:59 2009 UTC vs.
Revision 1.328 by root, Sun Feb 14 19:23:19 2010 UTC