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

Comparing libev/ev.c (file contents):
Revision 1.303 by root, Sun Jul 19 01:36:34 2009 UTC vs.
Revision 1.332 by root, Tue Mar 9 08:58:17 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
…		…
153		153
154	#endif	154	#endif
155		155
156	#include <math.h>	156	#include <math.h>
157	#include <stdlib.h>	157	#include <stdlib.h>
		158	#include <string.h>
158	#include <fcntl.h>	159	#include <fcntl.h>
159	#include <stddef.h>	160	#include <stddef.h>
160		161
161	#include <stdio.h>	162	#include <stdio.h>
162		163
163	#include <assert.h>	164	#include <assert.h>
164	#include <errno.h>	165	#include <errno.h>
165	#include <sys/types.h>	166	#include <sys/types.h>
166	#include <time.h>	167	#include <time.h>
		168	#include <limits.h>
167		169
168	#include <signal.h>	170	#include <signal.h>
169		171
170	#ifdef EV_H	172	#ifdef EV_H
171	# include EV_H	173	# include EV_H
…		…
182	# define WIN32_LEAN_AND_MEAN	184	# define WIN32_LEAN_AND_MEAN
183	# include <windows.h>	185	# include <windows.h>
184	# ifndef EV_SELECT_IS_WINSOCKET	186	# ifndef EV_SELECT_IS_WINSOCKET
185	# define EV_SELECT_IS_WINSOCKET 1	187	# define EV_SELECT_IS_WINSOCKET 1
186	# endif	188	# endif
		189	# undef EV_AVOID_STDIO
187	#endif	190	#endif
188		191
189	/* this block tries to deduce configuration from header-defined symbols and defaults */	192	/* this block tries to deduce configuration from header-defined symbols and defaults */
		193
		194	/* try to deduce the maximum number of signals on this platform */
		195	#if defined (EV_NSIG)
		196	/* use what's provided */
		197	#elif defined (NSIG)
		198	# define EV_NSIG (NSIG)
		199	#elif defined(_NSIG)
		200	# define EV_NSIG (_NSIG)
		201	#elif defined (SIGMAX)
		202	# define EV_NSIG (SIGMAX+1)
		203	#elif defined (SIG_MAX)
		204	# define EV_NSIG (SIG_MAX+1)
		205	#elif defined (_SIG_MAX)
		206	# define EV_NSIG (_SIG_MAX+1)
		207	#elif defined (MAXSIG)
		208	# define EV_NSIG (MAXSIG+1)
		209	#elif defined (MAX_SIG)
		210	# define EV_NSIG (MAX_SIG+1)
		211	#elif defined (SIGARRAYSIZE)
		212	# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
		213	#elif defined (_sys_nsig)
		214	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
		215	#else
		216	# error "unable to find value for NSIG, please report"
		217	/* to make it compile regardless, just remove the above line */
		218	# define EV_NSIG 65
		219	#endif
190		220
191	#ifndef EV_USE_CLOCK_SYSCALL	221	#ifndef EV_USE_CLOCK_SYSCALL
192	# if __linux && __GLIBC__ >= 2	222	# if __linux && __GLIBC__ >= 2
193	# define EV_USE_CLOCK_SYSCALL 1	223	# define EV_USE_CLOCK_SYSCALL 1
194	# else	224	# else
…		…
275	# define EV_USE_EVENTFD 0	305	# define EV_USE_EVENTFD 0
276	# endif	306	# endif
277	#endif	307	#endif
278		308
279	#ifndef EV_USE_SIGNALFD	309	#ifndef EV_USE_SIGNALFD
280	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9))	310	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
281	# define EV_USE_SIGNALFD 1	311	# define EV_USE_SIGNALFD 1
282	# else	312	# else
283	# define EV_USE_SIGNALFD 0	313	# define EV_USE_SIGNALFD 0
284	# endif	314	# endif
285	#endif	315	#endif
…		…
316	# endif	346	# endif
317	#endif	347	#endif
318		348
319	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	349	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
320		350
		351	#ifdef _AIX
		352	/* AIX has a completely broken poll.h header */
		353	# undef EV_USE_POLL
		354	# define EV_USE_POLL 0
		355	#endif
		356
321	#ifndef CLOCK_MONOTONIC	357	#ifndef CLOCK_MONOTONIC
322	# undef EV_USE_MONOTONIC	358	# undef EV_USE_MONOTONIC
323	# define EV_USE_MONOTONIC 0	359	# define EV_USE_MONOTONIC 0
324	#endif	360	#endif
325		361
…		…
359	# include <stdint.h>	395	# include <stdint.h>
360	# ifndef EFD_NONBLOCK	396	# ifndef EFD_NONBLOCK
361	# define EFD_NONBLOCK O_NONBLOCK	397	# define EFD_NONBLOCK O_NONBLOCK
362	# endif	398	# endif
363	# ifndef EFD_CLOEXEC	399	# ifndef EFD_CLOEXEC
		400	# ifdef O_CLOEXEC
364	# define EFD_CLOEXEC O_CLOEXEC	401	# define EFD_CLOEXEC O_CLOEXEC
		402	# else
		403	# define EFD_CLOEXEC 02000000
		404	# endif
365	# endif	405	# endif
366	# ifdef __cplusplus	406	# ifdef __cplusplus
367	extern "C" {	407	extern "C" {
368	# endif	408	# endif
369	int eventfd (unsigned int initval, int flags);	409	int (eventfd) (unsigned int initval, int flags);
370	# ifdef __cplusplus	410	# ifdef __cplusplus
371	}	411	}
372	# endif	412	# endif
373	#endif	413	#endif
374		414
375	#if EV_USE_SIGNALFD	415	#if EV_USE_SIGNALFD
376	# include <sys/signalfd.h>	416	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		417	# include <stdint.h>
		418	# ifndef SFD_NONBLOCK
		419	# define SFD_NONBLOCK O_NONBLOCK
377	#endif	420	# endif
		421	# ifndef SFD_CLOEXEC
		422	# ifdef O_CLOEXEC
		423	# define SFD_CLOEXEC O_CLOEXEC
		424	# else
		425	# define SFD_CLOEXEC 02000000
		426	# endif
		427	# endif
		428	# ifdef __cplusplus
		429	extern "C" {
		430	# endif
		431	int signalfd (int fd, const sigset_t *mask, int flags);
		432
		433	struct signalfd_siginfo
		434	{
		435	uint32_t ssi_signo;
		436	char pad[128 - sizeof (uint32_t)];
		437	};
		438	# ifdef __cplusplus
		439	}
		440	# endif
		441	#endif
		442
378		443
379	/**/	444	/**/
380		445
381	#if EV_VERIFY >= 3	446	#if EV_VERIFY >= 3
382	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)	447	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
…		…
394	*/	459	*/
395	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	460	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
396		461
397	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	462	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
398	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	463	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
399	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds, TODO */
400		464
401	#if __GNUC__ >= 4	465	#if __GNUC__ >= 4
402	# define expect(expr,value) __builtin_expect ((expr),(value))	466	# define expect(expr,value) __builtin_expect ((expr),(value))
403	# define noinline __attribute__ ((noinline))	467	# define noinline __attribute__ ((noinline))
404	#else	468	#else
…		…
445		509
446	#if EV_USE_MONOTONIC	510	#if EV_USE_MONOTONIC
447	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	511	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
448	#endif	512	#endif
449		513
		514	#ifndef EV_FD_TO_WIN32_HANDLE
		515	# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		516	#endif
		517	#ifndef EV_WIN32_HANDLE_TO_FD
		518	# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
		519	#endif
		520	#ifndef EV_WIN32_CLOSE_FD
		521	# define EV_WIN32_CLOSE_FD(fd) close (fd)
		522	#endif
		523
450	#ifdef _WIN32	524	#ifdef _WIN32
451	# include "ev_win32.c"	525	# include "ev_win32.c"
452	#endif	526	#endif
453		527
454	/*****************************************************************************/	528	/*****************************************************************************/
		529
		530	#if EV_AVOID_STDIO
		531	static void noinline
		532	ev_printerr (const char *msg)
		533	{
		534	write (STDERR_FILENO, msg, strlen (msg));
		535	}
		536	#endif
455		537
456	static void (syserr_cb)(const char msg);	538	static void (syserr_cb)(const char msg);
457		539
458	void	540	void
459	ev_set_syserr_cb (void (cb)(const char msg))	541	ev_set_syserr_cb (void (cb)(const char msg))
…		…
469		551
470	if (syserr_cb)	552	if (syserr_cb)
471	syserr_cb (msg);	553	syserr_cb (msg);
472	else	554	else
473	{	555	{
		556	#if EV_AVOID_STDIO
		557	const char *err = strerror (errno);
		558
		559	ev_printerr (msg);
		560	ev_printerr (": ");
		561	ev_printerr (err);
		562	ev_printerr ("\n");
		563	#else
474	perror (msg);	564	perror (msg);
		565	#endif
475	abort ();	566	abort ();
476	}	567	}
477	}	568	}
478		569
479	static void *	570	static void *
…		…
481	{	572	{
482	/* some systems, notably openbsd and darwin, fail to properly	573	/* some systems, notably openbsd and darwin, fail to properly
483	* implement realloc (x, 0) (as required by both ansi c-98 and	574	* implement realloc (x, 0) (as required by both ansi c-98 and
484	* the single unix specification, so work around them here.	575	* the single unix specification, so work around them here.
485	*/	576	*/
486
487	if (size)	577	if (size)
488	return realloc (ptr, size);	578	return realloc (ptr, size);
489		579
490	free (ptr);	580	free (ptr);
491	return 0;	581	return 0;
…		…
504	{	594	{
505	ptr = alloc (ptr, size);	595	ptr = alloc (ptr, size);
506		596
507	if (!ptr && size)	597	if (!ptr && size)
508	{	598	{
		599	#if EV_AVOID_STDIO
		600	ev_printerr ("libev: memory allocation failed, aborting.\n");
		601	#else
509	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	602	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		603	#endif
510	abort ();	604	abort ();
511	}	605	}
512		606
513	return ptr;	607	return ptr;
514	}	608	}
…		…
845		939
846	#if EV_SELECT_IS_WINSOCKET	940	#if EV_SELECT_IS_WINSOCKET
847	if (events)	941	if (events)
848	{	942	{
849	unsigned long arg;	943	unsigned long arg;
850	#ifdef EV_FD_TO_WIN32_HANDLE
851	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	944	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
852	#else
853	anfd->handle = _get_osfhandle (fd);
854	#endif
855	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	945	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
856	}	946	}
857	#endif	947	#endif
858		948
859	{	949	{
…		…
902	/* check whether the given fd is atcually valid, for error recovery */	992	/* check whether the given fd is atcually valid, for error recovery */
903	inline_size int	993	inline_size int
904	fd_valid (int fd)	994	fd_valid (int fd)
905	{	995	{
906	#ifdef _WIN32	996	#ifdef _WIN32
907	return _get_osfhandle (fd) != -1;	997	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
908	#else	998	#else
909	return fcntl (fd, F_GETFD) != -1;	999	return fcntl (fd, F_GETFD) != -1;
910	#endif	1000	#endif
911	}	1001	}
912		1002
…		…
930		1020
931	for (fd = anfdmax; fd--; )	1021	for (fd = anfdmax; fd--; )
932	if (anfds [fd].events)	1022	if (anfds [fd].events)
933	{	1023	{
934	fd_kill (EV_A_ fd);	1024	fd_kill (EV_A_ fd);
935	return;	1025	break;
936	}	1026	}
937	}	1027	}
938		1028
939	/* usually called after fork if backend needs to re-arm all fds from scratch */	1029	/* usually called after fork if backend needs to re-arm all fds from scratch */
940	static void noinline	1030	static void noinline
…		…
1030		1120
1031	for (;;)	1121	for (;;)
1032	{	1122	{
1033	int c = k << 1;	1123	int c = k << 1;
1034		1124
1035	if (c > N + HEAP0 - 1)	1125	if (c >= N + HEAP0)
1036	break;	1126	break;
1037		1127
1038	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])	1128	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1039	? 1 : 0;	1129	? 1 : 0;
1040		1130
…		…
1076		1166
1077	/* move an element suitably so it is in a correct place */	1167	/* move an element suitably so it is in a correct place */
1078	inline_size void	1168	inline_size void
1079	adjustheap (ANHE *heap, int N, int k)	1169	adjustheap (ANHE *heap, int N, int k)
1080	{	1170	{
1081	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1171	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1082	upheap (heap, k);	1172	upheap (heap, k);
1083	else	1173	else
1084	downheap (heap, N, k);	1174	downheap (heap, N, k);
1085	}	1175	}
1086		1176
…		…
1099	/*****************************************************************************/	1189	/*****************************************************************************/
1100		1190
1101	/* associate signal watchers to a signal signal */	1191	/* associate signal watchers to a signal signal */
1102	typedef struct	1192	typedef struct
1103	{	1193	{
		1194	EV_ATOMIC_T pending;
		1195	#if EV_MULTIPLICITY
		1196	EV_P;
		1197	#endif
1104	WL head;	1198	WL head;
1105	EV_ATOMIC_T gotsig;
1106	} ANSIG;	1199	} ANSIG;
1107		1200
1108	static ANSIG *signals;	1201	static ANSIG signals [EV_NSIG - 1];
1109	static int signalmax;
1110
1111	static EV_ATOMIC_T gotsig;
1112		1202
1113	/*****************************************************************************/	1203	/*****************************************************************************/
1114		1204
1115	/* used to prepare libev internal fd's */	1205	/* used to prepare libev internal fd's */
1116	/* this is not fork-safe */	1206	/* this is not fork-safe */
1117	inline_speed void	1207	inline_speed void
1118	fd_intern (int fd)	1208	fd_intern (int fd)
1119	{	1209	{
1120	#ifdef _WIN32	1210	#ifdef _WIN32
1121	unsigned long arg = 1;	1211	unsigned long arg = 1;
1122	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1212	ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1123	#else	1213	#else
1124	fcntl (fd, F_SETFD, FD_CLOEXEC);	1214	fcntl (fd, F_SETFD, FD_CLOEXEC);
1125	fcntl (fd, F_SETFL, O_NONBLOCK);	1215	fcntl (fd, F_SETFL, O_NONBLOCK);
1126	#endif	1216	#endif
1127	}	1217	}
…		…
1184	/* called whenever the libev signal pipe */	1274	/* called whenever the libev signal pipe */
1185	/* got some events (signal, async) */	1275	/* got some events (signal, async) */
1186	static void	1276	static void
1187	pipecb (EV_P_ ev_io *iow, int revents)	1277	pipecb (EV_P_ ev_io *iow, int revents)
1188	{	1278	{
		1279	int i;
		1280
1189	#if EV_USE_EVENTFD	1281	#if EV_USE_EVENTFD
1190	if (evfd >= 0)	1282	if (evfd >= 0)
1191	{	1283	{
1192	uint64_t counter;	1284	uint64_t counter;
1193	read (evfd, &counter, sizeof (uint64_t));	1285	read (evfd, &counter, sizeof (uint64_t));
…		…
1197	{	1289	{
1198	char dummy;	1290	char dummy;
1199	read (evpipe [0], &dummy, 1);	1291	read (evpipe [0], &dummy, 1);
1200	}	1292	}
1201		1293
1202	if (gotsig && ev_is_default_loop (EV_A))	1294	if (sig_pending)
1203	{	1295	{
1204	int signum;	1296	sig_pending = 0;
1205	gotsig = 0;
1206		1297
1207	for (signum = signalmax; signum--; )	1298	for (i = EV_NSIG - 1; i--; )
1208	if (signals [signum].gotsig)	1299	if (expect_false (signals [i].pending))
1209	ev_feed_signal_event (EV_A_ signum + 1);	1300	ev_feed_signal_event (EV_A_ i + 1);
1210	}	1301	}
1211		1302
1212	#if EV_ASYNC_ENABLE	1303	#if EV_ASYNC_ENABLE
1213	if (gotasync)	1304	if (async_pending)
1214	{	1305	{
1215	int i;	1306	async_pending = 0;
1216	gotasync = 0;
1217		1307
1218	for (i = asynccnt; i--; )	1308	for (i = asynccnt; i--; )
1219	if (asyncs [i]->sent)	1309	if (asyncs [i]->sent)
1220	{	1310	{
1221	asyncs [i]->sent = 0;	1311	asyncs [i]->sent = 0;
…		…
1229		1319
1230	static void	1320	static void
1231	ev_sighandler (int signum)	1321	ev_sighandler (int signum)
1232	{	1322	{
1233	#if EV_MULTIPLICITY	1323	#if EV_MULTIPLICITY
1234	struct ev_loop *loop = &default_loop_struct;	1324	EV_P = signals [signum - 1].loop;
1235	#endif	1325	#endif
1236		1326
1237	#if _WIN32	1327	#ifdef _WIN32
1238	signal (signum, ev_sighandler);	1328	signal (signum, ev_sighandler);
1239	#endif	1329	#endif
1240		1330
1241	signals [signum - 1].gotsig = 1;	1331	signals [signum - 1].pending = 1;
1242	evpipe_write (EV_A_ &gotsig);	1332	evpipe_write (EV_A_ &sig_pending);
1243	}	1333	}
1244		1334
1245	void noinline	1335	void noinline
1246	ev_feed_signal_event (EV_P_ int signum)	1336	ev_feed_signal_event (EV_P_ int signum)
1247	{	1337	{
1248	WL w;	1338	WL w;
1249		1339
		1340	if (expect_false (signum <= 0 \|\| signum > EV_NSIG))
		1341	return;
		1342
		1343	--signum;
		1344
1250	#if EV_MULTIPLICITY	1345	#if EV_MULTIPLICITY
1251	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1346	/* it is permissible to try to feed a signal to the wrong loop */
1252	#endif	1347	/* or, likely more useful, feeding a signal nobody is waiting for */
1253		1348
1254	--signum;	1349	if (expect_false (signals [signum].loop != EV_A))
1255
1256	if (signum < 0 \|\| signum >= signalmax)
1257	return;	1350	return;
		1351	#endif
1258		1352
1259	signals [signum].gotsig = 0;	1353	signals [signum].pending = 0;
1260		1354
1261	for (w = signals [signum].head; w; w = w->next)	1355	for (w = signals [signum].head; w; w = w->next)
1262	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1356	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1263	}	1357	}
1264		1358
1265	#if EV_USE_SIGNALFD	1359	#if EV_USE_SIGNALFD
1266	static void	1360	static void
1267	sigfdcb (EV_P_ ev_io *iow, int revents)	1361	sigfdcb (EV_P_ ev_io *iow, int revents)
1268	{	1362	{
1269	struct signalfd_siginfo si[4], *sip;	1363	struct signalfd_siginfo si[2], sip; / these structs are big */
1270		1364
1271	for (;;)	1365	for (;;)
1272	{	1366	{
1273	ssize_t res = read (sigfd, si, sizeof (si));	1367	ssize_t res = read (sigfd, si, sizeof (si));
1274		1368
…		…
1508	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1602	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1509	have_monotonic = 1;	1603	have_monotonic = 1;
1510	}	1604	}
1511	#endif	1605	#endif
1512		1606
		1607	/* pid check not overridable via env */
		1608	#ifndef _WIN32
		1609	if (flags & EVFLAG_FORKCHECK)
		1610	curpid = getpid ();
		1611	#endif
		1612
		1613	if (!(flags & EVFLAG_NOENV)
		1614	&& !enable_secure ()
		1615	&& getenv ("LIBEV_FLAGS"))
		1616	flags = atoi (getenv ("LIBEV_FLAGS"));
		1617
1513	ev_rt_now = ev_time ();	1618	ev_rt_now = ev_time ();
1514	mn_now = get_clock ();	1619	mn_now = get_clock ();
1515	now_floor = mn_now;	1620	now_floor = mn_now;
1516	rtmn_diff = ev_rt_now - mn_now;	1621	rtmn_diff = ev_rt_now - mn_now;
1517	#if EV_MINIMAL < 2	1622	#if EV_MINIMAL < 2
…		…
1520		1625
1521	io_blocktime = 0.;	1626	io_blocktime = 0.;
1522	timeout_blocktime = 0.;	1627	timeout_blocktime = 0.;
1523	backend = 0;	1628	backend = 0;
1524	backend_fd = -1;	1629	backend_fd = -1;
1525	gotasync = 0;	1630	sig_pending = 0;
		1631	#if EV_ASYNC_ENABLE
		1632	async_pending = 0;
		1633	#endif
1526	#if EV_USE_INOTIFY	1634	#if EV_USE_INOTIFY
1527	fs_fd = -2;	1635	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1528	#endif	1636	#endif
1529	#if EV_USE_SIGNALFD	1637	#if EV_USE_SIGNALFD
1530	sigfd = -2;	1638	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1531	#endif	1639	#endif
1532
1533	/* pid check not overridable via env */
1534	#ifndef _WIN32
1535	if (flags & EVFLAG_FORKCHECK)
1536	curpid = getpid ();
1537	#endif
1538
1539	if (!(flags & EVFLAG_NOENV)
1540	&& !enable_secure ()
1541	&& getenv ("LIBEV_FLAGS"))
1542	flags = atoi (getenv ("LIBEV_FLAGS"));
1543		1640
1544	if (!(flags & 0x0000ffffU))	1641	if (!(flags & 0x0000ffffU))
1545	flags \|= ev_recommended_backends ();	1642	flags \|= ev_recommended_backends ();
1546		1643
1547	#if EV_USE_PORT	1644	#if EV_USE_PORT
…		…
1583	close (evfd);	1680	close (evfd);
1584	#endif	1681	#endif
1585		1682
1586	if (evpipe [0] >= 0)	1683	if (evpipe [0] >= 0)
1587	{	1684	{
1588	close (evpipe [0]);	1685	EV_WIN32_CLOSE_FD (evpipe [0]);
1589	close (evpipe [1]);	1686	EV_WIN32_CLOSE_FD (evpipe [1]);
1590	}	1687	}
1591	}	1688	}
1592		1689
1593	#if EV_USE_SIGNALFD	1690	#if EV_USE_SIGNALFD
1594	if (ev_is_active (&sigfd_w))	1691	if (ev_is_active (&sigfd_w))
1595	{
1596	/ev_ref (EV_A);/
1597	/ev_io_stop (EV_A_ &sigfd_w);/
1598
1599	close (sigfd);	1692	close (sigfd);
1600	}
1601	#endif	1693	#endif
1602		1694
1603	#if EV_USE_INOTIFY	1695	#if EV_USE_INOTIFY
1604	if (fs_fd >= 0)	1696	if (fs_fd >= 0)
1605	close (fs_fd);	1697	close (fs_fd);
…		…
1630	#if EV_IDLE_ENABLE	1722	#if EV_IDLE_ENABLE
1631	array_free (idle, [i]);	1723	array_free (idle, [i]);
1632	#endif	1724	#endif
1633	}	1725	}
1634		1726
1635	ev_free (anfds); anfdmax = 0;	1727	ev_free (anfds); anfds = 0; anfdmax = 0;
1636		1728
1637	/* have to use the microsoft-never-gets-it-right macro */	1729	/* have to use the microsoft-never-gets-it-right macro */
1638	array_free (rfeed, EMPTY);	1730	array_free (rfeed, EMPTY);
1639	array_free (fdchange, EMPTY);	1731	array_free (fdchange, EMPTY);
1640	array_free (timer, EMPTY);	1732	array_free (timer, EMPTY);
…		…
1675		1767
1676	if (ev_is_active (&pipe_w))	1768	if (ev_is_active (&pipe_w))
1677	{	1769	{
1678	/* this "locks" the handlers against writing to the pipe */	1770	/* this "locks" the handlers against writing to the pipe */
1679	/* while we modify the fd vars */	1771	/* while we modify the fd vars */
1680	gotsig = 1;	1772	sig_pending = 1;
1681	#if EV_ASYNC_ENABLE	1773	#if EV_ASYNC_ENABLE
1682	gotasync = 1;	1774	async_pending = 1;
1683	#endif	1775	#endif
1684		1776
1685	ev_ref (EV_A);	1777	ev_ref (EV_A);
1686	ev_io_stop (EV_A_ &pipe_w);	1778	ev_io_stop (EV_A_ &pipe_w);
1687		1779
…		…
1690	close (evfd);	1782	close (evfd);
1691	#endif	1783	#endif
1692		1784
1693	if (evpipe [0] >= 0)	1785	if (evpipe [0] >= 0)
1694	{	1786	{
1695	close (evpipe [0]);	1787	EV_WIN32_CLOSE_FD (evpipe [0]);
1696	close (evpipe [1]);	1788	EV_WIN32_CLOSE_FD (evpipe [1]);
1697	}	1789	}
1698		1790
1699	evpipe_init (EV_A);	1791	evpipe_init (EV_A);
1700	/* now iterate over everything, in case we missed something */	1792	/* now iterate over everything, in case we missed something */
1701	pipecb (EV_A_ &pipe_w, EV_READ);	1793	pipecb (EV_A_ &pipe_w, EV_READ);
…		…
1707	#if EV_MULTIPLICITY	1799	#if EV_MULTIPLICITY
1708		1800
1709	struct ev_loop *	1801	struct ev_loop *
1710	ev_loop_new (unsigned int flags)	1802	ev_loop_new (unsigned int flags)
1711	{	1803	{
1712	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));	1804	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1713		1805
1714	memset (loop, 0, sizeof (struct ev_loop));	1806	memset (EV_A, 0, sizeof (struct ev_loop));
1715	loop_init (EV_A_ flags);	1807	loop_init (EV_A_ flags);
1716		1808
1717	if (ev_backend (EV_A))	1809	if (ev_backend (EV_A))
1718	return loop;	1810	return EV_A;
1719		1811
1720	return 0;	1812	return 0;
1721	}	1813	}
1722		1814
1723	void	1815	void
…		…
1827	assert (checkmax >= checkcnt);	1919	assert (checkmax >= checkcnt);
1828	array_verify (EV_A_ (W *)checks, checkcnt);	1920	array_verify (EV_A_ (W *)checks, checkcnt);
1829		1921
1830	# if 0	1922	# if 0
1831	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	1923	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
1832	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)	1924	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1833	# endif	1925	# endif
1834	#endif	1926	#endif
1835	}	1927	}
1836	#endif	1928	#endif
1837		1929
…		…
1844	#endif	1936	#endif
1845	{	1937	{
1846	if (!ev_default_loop_ptr)	1938	if (!ev_default_loop_ptr)
1847	{	1939	{
1848	#if EV_MULTIPLICITY	1940	#if EV_MULTIPLICITY
1849	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1941	EV_P = ev_default_loop_ptr = &default_loop_struct;
1850	#else	1942	#else
1851	ev_default_loop_ptr = 1;	1943	ev_default_loop_ptr = 1;
1852	#endif	1944	#endif
1853		1945
1854	loop_init (EV_A_ flags);	1946	loop_init (EV_A_ flags);
…		…
1871		1963
1872	void	1964	void
1873	ev_default_destroy (void)	1965	ev_default_destroy (void)
1874	{	1966	{
1875	#if EV_MULTIPLICITY	1967	#if EV_MULTIPLICITY
1876	struct ev_loop *loop = ev_default_loop_ptr;	1968	EV_P = ev_default_loop_ptr;
1877	#endif	1969	#endif
1878		1970
1879	ev_default_loop_ptr = 0;	1971	ev_default_loop_ptr = 0;
1880		1972
1881	#ifndef _WIN32	1973	#ifndef _WIN32
…		…
1888		1980
1889	void	1981	void
1890	ev_default_fork (void)	1982	ev_default_fork (void)
1891	{	1983	{
1892	#if EV_MULTIPLICITY	1984	#if EV_MULTIPLICITY
1893	struct ev_loop *loop = ev_default_loop_ptr;	1985	EV_P = ev_default_loop_ptr;
1894	#endif	1986	#endif
1895		1987
1896	postfork = 1; /* must be in line with ev_loop_fork */	1988	postfork = 1; /* must be in line with ev_loop_fork */
1897	}	1989	}
1898		1990
…		…
2093	ANHE_at_cache (*he);	2185	ANHE_at_cache (*he);
2094	}	2186	}
2095	}	2187	}
2096		2188
2097	/* fetch new monotonic and realtime times from the kernel */	2189	/* fetch new monotonic and realtime times from the kernel */
2098	/* also detetc if there was a timejump, and act accordingly */	2190	/* also detect if there was a timejump, and act accordingly */
2099	inline_speed void	2191	inline_speed void
2100	time_update (EV_P_ ev_tstamp max_block)	2192	time_update (EV_P_ ev_tstamp max_block)
2101	{	2193	{
2102	#if EV_USE_MONOTONIC	2194	#if EV_USE_MONOTONIC
2103	if (expect_true (have_monotonic))	2195	if (expect_true (have_monotonic))
…		…
2364	inline_size void	2456	inline_size void
2365	wlist_del (WL *head, WL elem)	2457	wlist_del (WL *head, WL elem)
2366	{	2458	{
2367	while (*head)	2459	while (*head)
2368	{	2460	{
2369	if (*head == elem)	2461	if (expect_true (*head == elem))
2370	{	2462	{
2371	*head = elem->next;	2463	*head = elem->next;
2372	return;	2464	break;
2373	}	2465	}
2374		2466
2375	head = &(*head)->next;	2467	head = &(*head)->next;
2376	}	2468	}
2377	}	2469	}
…		…
2437		2529
2438	if (expect_false (ev_is_active (w)))	2530	if (expect_false (ev_is_active (w)))
2439	return;	2531	return;
2440		2532
2441	assert (("libev: ev_io_start called with negative fd", fd >= 0));	2533	assert (("libev: ev_io_start called with negative fd", fd >= 0));
2442	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET \| EV_READ \| EV_WRITE))));	2534	assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET \| EV_READ \| EV_WRITE))));
2443		2535
2444	EV_FREQUENT_CHECK;	2536	EV_FREQUENT_CHECK;
2445		2537
2446	ev_start (EV_A_ (W)w, 1);	2538	ev_start (EV_A_ (W)w, 1);
2447	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2539	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
…		…
2517	timers [active] = timers [timercnt + HEAP0];	2609	timers [active] = timers [timercnt + HEAP0];
2518	adjustheap (timers, timercnt, active);	2610	adjustheap (timers, timercnt, active);
2519	}	2611	}
2520	}	2612	}
2521		2613
2522	EV_FREQUENT_CHECK;
2523
2524	ev_at (w) -= mn_now;	2614	ev_at (w) -= mn_now;
2525		2615
2526	ev_stop (EV_A_ (W)w);	2616	ev_stop (EV_A_ (W)w);
		2617
		2618	EV_FREQUENT_CHECK;
2527	}	2619	}
2528		2620
2529	void noinline	2621	void noinline
2530	ev_timer_again (EV_P_ ev_timer *w)	2622	ev_timer_again (EV_P_ ev_timer *w)
2531	{	2623	{
…		…
2610	periodics [active] = periodics [periodiccnt + HEAP0];	2702	periodics [active] = periodics [periodiccnt + HEAP0];
2611	adjustheap (periodics, periodiccnt, active);	2703	adjustheap (periodics, periodiccnt, active);
2612	}	2704	}
2613	}	2705	}
2614		2706
2615	EV_FREQUENT_CHECK;
2616
2617	ev_stop (EV_A_ (W)w);	2707	ev_stop (EV_A_ (W)w);
		2708
		2709	EV_FREQUENT_CHECK;
2618	}	2710	}
2619		2711
2620	void noinline	2712	void noinline
2621	ev_periodic_again (EV_P_ ev_periodic *w)	2713	ev_periodic_again (EV_P_ ev_periodic *w)
2622	{	2714	{
…		…
2631	#endif	2723	#endif
2632		2724
2633	void noinline	2725	void noinline
2634	ev_signal_start (EV_P_ ev_signal *w)	2726	ev_signal_start (EV_P_ ev_signal *w)
2635	{	2727	{
2636	#if EV_MULTIPLICITY
2637	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2638	#endif
2639	if (expect_false (ev_is_active (w)))	2728	if (expect_false (ev_is_active (w)))
2640	return;	2729	return;
2641		2730
2642	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));	2731	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
		2732
		2733	#if EV_MULTIPLICITY
		2734	assert (("libev: a signal must not be attached to two different loops",
		2735	!signals [w->signum - 1].loop \|\| signals [w->signum - 1].loop == loop));
		2736
		2737	signals [w->signum - 1].loop = EV_A;
		2738	#endif
2643		2739
2644	EV_FREQUENT_CHECK;	2740	EV_FREQUENT_CHECK;
2645		2741
2646	#if EV_USE_SIGNALFD	2742	#if EV_USE_SIGNALFD
2647	if (sigfd == -2)	2743	if (sigfd == -2)
…		…
2669	sigaddset (&sigfd_set, w->signum);	2765	sigaddset (&sigfd_set, w->signum);
2670	sigprocmask (SIG_BLOCK, &sigfd_set, 0);	2766	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2671		2767
2672	signalfd (sigfd, &sigfd_set, 0);	2768	signalfd (sigfd, &sigfd_set, 0);
2673	}	2769	}
2674	else
2675	#endif	2770	#endif
2676	evpipe_init (EV_A);
2677
2678	{
2679	#ifndef _WIN32
2680	sigset_t full, prev;
2681	sigfillset (&full);
2682	sigprocmask (SIG_SETMASK, &full, &prev);
2683	#endif
2684
2685	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2686
2687	#ifndef _WIN32
2688	if (sigfd < 0)/TODO/
2689	sigdelset (&prev, w->signum);
2690	sigprocmask (SIG_SETMASK, &prev, 0);
2691	#endif
2692	}
2693		2771
2694	ev_start (EV_A_ (W)w, 1);	2772	ev_start (EV_A_ (W)w, 1);
2695	wlist_add (&signals [w->signum - 1].head, (WL)w);	2773	wlist_add (&signals [w->signum - 1].head, (WL)w);
2696		2774
2697	if (!((WL)w)->next)	2775	if (!((WL)w)->next)
		2776	# if EV_USE_SIGNALFD
		2777	if (sigfd < 0) /TODO/
		2778	# endif
2698	{	2779	{
2699	#if _WIN32	2780	# ifdef _WIN32
		2781	evpipe_init (EV_A);
		2782
2700	signal (w->signum, ev_sighandler);	2783	signal (w->signum, ev_sighandler);
2701	#else	2784	# else
2702	if (sigfd < 0) /TODO/
2703	{
2704	struct sigaction sa = { };	2785	struct sigaction sa;
		2786
		2787	evpipe_init (EV_A);
		2788
2705	sa.sa_handler = ev_sighandler;	2789	sa.sa_handler = ev_sighandler;
2706	sigfillset (&sa.sa_mask);	2790	sigfillset (&sa.sa_mask);
2707	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2791	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2708	sigaction (w->signum, &sa, 0);	2792	sigaction (w->signum, &sa, 0);
		2793
		2794	sigemptyset (&sa.sa_mask);
		2795	sigaddset (&sa.sa_mask, w->signum);
		2796	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
		2797	#endif
2709	}	2798	}
2710	#endif
2711	}
2712		2799
2713	EV_FREQUENT_CHECK;	2800	EV_FREQUENT_CHECK;
2714	}	2801	}
2715		2802
2716	void noinline	2803	void noinline
…		…
2724		2811
2725	wlist_del (&signals [w->signum - 1].head, (WL)w);	2812	wlist_del (&signals [w->signum - 1].head, (WL)w);
2726	ev_stop (EV_A_ (W)w);	2813	ev_stop (EV_A_ (W)w);
2727		2814
2728	if (!signals [w->signum - 1].head)	2815	if (!signals [w->signum - 1].head)
		2816	{
		2817	#if EV_MULTIPLICITY
		2818	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2819	#endif
2729	#if EV_USE_SIGNALFD	2820	#if EV_USE_SIGNALFD
2730	if (sigfd >= 0)	2821	if (sigfd >= 0)
2731	{	2822	{
2732	sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D	2823	sigset_t ss;
		2824
		2825	sigemptyset (&ss);
		2826	sigaddset (&ss, w->signum);
2733	sigdelset (&sigfd_set, w->signum);	2827	sigdelset (&sigfd_set, w->signum);
		2828
2734	signalfd (sigfd, &sigfd_set, 0);	2829	signalfd (sigfd, &sigfd_set, 0);
2735	sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D	2830	sigprocmask (SIG_UNBLOCK, &ss, 0);
2736	/TODO: maybe unblock signal? /
2737	}	2831	}
2738	else	2832	else
2739	#endif	2833	#endif
2740	signal (w->signum, SIG_DFL);	2834	signal (w->signum, SIG_DFL);
		2835	}
2741		2836
2742	EV_FREQUENT_CHECK;	2837	EV_FREQUENT_CHECK;
2743	}	2838	}
2744		2839
2745	void	2840	void
…		…
2786	#define MIN_STAT_INTERVAL 0.1074891	2881	#define MIN_STAT_INTERVAL 0.1074891
2787		2882
2788	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2883	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2789		2884
2790	#if EV_USE_INOTIFY	2885	#if EV_USE_INOTIFY
2791	# define EV_INOTIFY_BUFSIZE 8192	2886
		2887	/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
		2888	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2792		2889
2793	static void noinline	2890	static void noinline
2794	infy_add (EV_P_ ev_stat *w)	2891	infy_add (EV_P_ ev_stat *w)
2795	{	2892	{
2796	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);	2893	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);
2797		2894
2798	if (w->wd < 0)	2895	if (w->wd >= 0)
		2896	{
		2897	struct statfs sfs;
		2898
		2899	/* now local changes will be tracked by inotify, but remote changes won't */
		2900	/* unless the filesystem is known to be local, we therefore still poll */
		2901	/* also do poll on <2.6.25, but with normal frequency */
		2902
		2903	if (!fs_2625)
		2904	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		2905	else if (!statfs (w->path, &sfs)
		2906	&& (sfs.f_type == 0x1373 /* devfs */
		2907	\|\| sfs.f_type == 0xEF53 /* ext2/3 */
		2908	\|\| sfs.f_type == 0x3153464a /* jfs */
		2909	\|\| sfs.f_type == 0x52654973 /* reiser3 */
		2910	\|\| sfs.f_type == 0x01021994 /* tempfs */
		2911	\|\| sfs.f_type == 0x58465342 /* xfs */))
		2912	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
		2913	else
		2914	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2799	{	2915	}
		2916	else
		2917	{
		2918	/* can't use inotify, continue to stat */
2800	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;	2919	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2801	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2802		2920
2803	/* monitor some parent directory for speedup hints */	2921	/* if path is not there, monitor some parent directory for speedup hints */
2804	/* note that exceeding the hardcoded path limit is not a correctness issue, */	2922	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2805	/* but an efficiency issue only */	2923	/* but an efficiency issue only */
2806	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)	2924	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)
2807	{	2925	{
2808	char path [4096];	2926	char path [4096];
…		…
2824	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));	2942	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));
2825	}	2943	}
2826	}	2944	}
2827		2945
2828	if (w->wd >= 0)	2946	if (w->wd >= 0)
2829	{
2830	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2947	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2831		2948
2832	/* now local changes will be tracked by inotify, but remote changes won't */	2949	/* now re-arm timer, if required */
2833	/* unless the filesystem it known to be local, we therefore still poll */	2950	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2834	/* also do poll on <2.6.25, but with normal frequency */
2835	struct statfs sfs;
2836
2837	if (fs_2625 && !statfs (w->path, &sfs))
2838	if (sfs.f_type == 0x1373 /* devfs */
2839	\|\| sfs.f_type == 0xEF53 /* ext2/3 */
2840	\|\| sfs.f_type == 0x3153464a /* jfs */
2841	\|\| sfs.f_type == 0x52654973 /* reiser3 */
2842	\|\| sfs.f_type == 0x01021994 /* tempfs */
2843	\|\| sfs.f_type == 0x58465342 /* xfs */)
2844	return;
2845
2846	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2847	ev_timer_again (EV_A_ &w->timer);	2951	ev_timer_again (EV_A_ &w->timer);
2848	}	2952	if (ev_is_active (&w->timer)) ev_unref (EV_A);
2849	}	2953	}
2850		2954
2851	static void noinline	2955	static void noinline
2852	infy_del (EV_P_ ev_stat *w)	2956	infy_del (EV_P_ ev_stat *w)
2853	{	2957	{
…		…
2898		3002
2899	static void	3003	static void
2900	infy_cb (EV_P_ ev_io *w, int revents)	3004	infy_cb (EV_P_ ev_io *w, int revents)
2901	{	3005	{
2902	char buf [EV_INOTIFY_BUFSIZE];	3006	char buf [EV_INOTIFY_BUFSIZE];
2903	struct inotify_event ev = (struct inotify_event )buf;
2904	int ofs;	3007	int ofs;
2905	int len = read (fs_fd, buf, sizeof (buf));	3008	int len = read (fs_fd, buf, sizeof (buf));
2906		3009
2907	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	3010	for (ofs = 0; ofs < len; )
		3011	{
		3012	struct inotify_event ev = (struct inotify_event )(buf + ofs);
2908	infy_wd (EV_A_ ev->wd, ev->wd, ev);	3013	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		3014	ofs += sizeof (struct inotify_event) + ev->len;
		3015	}
		3016	}
		3017
		3018	inline_size unsigned int
		3019	ev_linux_version (void)
		3020	{
		3021	struct utsname buf;
		3022	unsigned int v;
		3023	int i;
		3024	char *p = buf.release;
		3025
		3026	if (uname (&buf))
		3027	return 0;
		3028
		3029	for (i = 3+1; --i; )
		3030	{
		3031	unsigned int c = 0;
		3032
		3033	for (;;)
		3034	{
		3035	if (p >= '0' && p <= '9')
		3036	c = c * 10 + *p++ - '0';
		3037	else
		3038	{
		3039	p += *p == '.';
		3040	break;
		3041	}
		3042	}
		3043
		3044	v = (v << 8) \| c;
		3045	}
		3046
		3047	return v;
2909	}	3048	}
2910		3049
2911	inline_size void	3050	inline_size void
2912	check_2625 (EV_P)	3051	ev_check_2625 (EV_P)
2913	{	3052	{
2914	/* kernels < 2.6.25 are borked	3053	/* kernels < 2.6.25 are borked
2915	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html	3054	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2916	*/	3055	*/
2917	struct utsname buf;	3056	if (ev_linux_version () < 0x020619)
2918	int major, minor, micro;
2919
2920	if (uname (&buf))
2921	return;	3057	return;
2922		3058
2923	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2924	return;
2925
2926	if (major < 2
2927	\|\| (major == 2 && minor < 6)
2928	\|\| (major == 2 && minor == 6 && micro < 25))
2929	return;
2930
2931	fs_2625 = 1;	3059	fs_2625 = 1;
		3060	}
		3061
		3062	inline_size int
		3063	infy_newfd (void)
		3064	{
		3065	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3066	int fd = inotify_init1 (IN_CLOEXEC \| IN_NONBLOCK);
		3067	if (fd >= 0)
		3068	return fd;
		3069	#endif
		3070	return inotify_init ();
2932	}	3071	}
2933		3072
2934	inline_size void	3073	inline_size void
2935	infy_init (EV_P)	3074	infy_init (EV_P)
2936	{	3075	{
2937	if (fs_fd != -2)	3076	if (fs_fd != -2)
2938	return;	3077	return;
2939		3078
2940	fs_fd = -1;	3079	fs_fd = -1;
2941		3080
2942	check_2625 (EV_A);	3081	ev_check_2625 (EV_A);
2943		3082
2944	fs_fd = inotify_init ();	3083	fs_fd = infy_newfd ();
2945		3084
2946	if (fs_fd >= 0)	3085	if (fs_fd >= 0)
2947	{	3086	{
		3087	fd_intern (fs_fd);
2948	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3088	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2949	ev_set_priority (&fs_w, EV_MAXPRI);	3089	ev_set_priority (&fs_w, EV_MAXPRI);
2950	ev_io_start (EV_A_ &fs_w);	3090	ev_io_start (EV_A_ &fs_w);
		3091	ev_unref (EV_A);
2951	}	3092	}
2952	}	3093	}
2953		3094
2954	inline_size void	3095	inline_size void
2955	infy_fork (EV_P)	3096	infy_fork (EV_P)
…		…
2957	int slot;	3098	int slot;
2958		3099
2959	if (fs_fd < 0)	3100	if (fs_fd < 0)
2960	return;	3101	return;
2961		3102
		3103	ev_ref (EV_A);
		3104	ev_io_stop (EV_A_ &fs_w);
2962	close (fs_fd);	3105	close (fs_fd);
2963	fs_fd = inotify_init ();	3106	fs_fd = infy_newfd ();
		3107
		3108	if (fs_fd >= 0)
		3109	{
		3110	fd_intern (fs_fd);
		3111	ev_io_set (&fs_w, fs_fd, EV_READ);
		3112	ev_io_start (EV_A_ &fs_w);
		3113	ev_unref (EV_A);
		3114	}
2964		3115
2965	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3116	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2966	{	3117	{
2967	WL w_ = fs_hash [slot].head;	3118	WL w_ = fs_hash [slot].head;
2968	fs_hash [slot].head = 0;	3119	fs_hash [slot].head = 0;
…		…
2975	w->wd = -1;	3126	w->wd = -1;
2976		3127
2977	if (fs_fd >= 0)	3128	if (fs_fd >= 0)
2978	infy_add (EV_A_ w); /* re-add, no matter what */	3129	infy_add (EV_A_ w); /* re-add, no matter what */
2979	else	3130	else
		3131	{
		3132	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3133	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2980	ev_timer_again (EV_A_ &w->timer);	3134	ev_timer_again (EV_A_ &w->timer);
		3135	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		3136	}
2981	}	3137	}
2982	}	3138	}
2983	}	3139	}
2984		3140
2985	#endif	3141	#endif
…		…
3002	static void noinline	3158	static void noinline
3003	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	3159	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3004	{	3160	{
3005	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));	3161	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
3006		3162
3007	/* we copy this here each the time so that */	3163	ev_statdata prev = w->attr;
3008	/* prev has the old value when the callback gets invoked */
3009	w->prev = w->attr;
3010	ev_stat_stat (EV_A_ w);	3164	ev_stat_stat (EV_A_ w);
3011		3165
3012	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */	3166	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3013	if (	3167	if (
3014	w->prev.st_dev != w->attr.st_dev	3168	prev.st_dev != w->attr.st_dev
3015	\|\| w->prev.st_ino != w->attr.st_ino	3169	\|\| prev.st_ino != w->attr.st_ino
3016	\|\| w->prev.st_mode != w->attr.st_mode	3170	\|\| prev.st_mode != w->attr.st_mode
3017	\|\| w->prev.st_nlink != w->attr.st_nlink	3171	\|\| prev.st_nlink != w->attr.st_nlink
3018	\|\| w->prev.st_uid != w->attr.st_uid	3172	\|\| prev.st_uid != w->attr.st_uid
3019	\|\| w->prev.st_gid != w->attr.st_gid	3173	\|\| prev.st_gid != w->attr.st_gid
3020	\|\| w->prev.st_rdev != w->attr.st_rdev	3174	\|\| prev.st_rdev != w->attr.st_rdev
3021	\|\| w->prev.st_size != w->attr.st_size	3175	\|\| prev.st_size != w->attr.st_size
3022	\|\| w->prev.st_atime != w->attr.st_atime	3176	\|\| prev.st_atime != w->attr.st_atime
3023	\|\| w->prev.st_mtime != w->attr.st_mtime	3177	\|\| prev.st_mtime != w->attr.st_mtime
3024	\|\| w->prev.st_ctime != w->attr.st_ctime	3178	\|\| prev.st_ctime != w->attr.st_ctime
3025	) {	3179	) {
		3180	/* we only update w->prev on actual differences */
		3181	/* in case we test more often than invoke the callback, */
		3182	/* to ensure that prev is always different to attr */
		3183	w->prev = prev;
		3184
3026	#if EV_USE_INOTIFY	3185	#if EV_USE_INOTIFY
3027	if (fs_fd >= 0)	3186	if (fs_fd >= 0)
3028	{	3187	{
3029	infy_del (EV_A_ w);	3188	infy_del (EV_A_ w);
3030	infy_add (EV_A_ w);	3189	infy_add (EV_A_ w);
…		…
3055		3214
3056	if (fs_fd >= 0)	3215	if (fs_fd >= 0)
3057	infy_add (EV_A_ w);	3216	infy_add (EV_A_ w);
3058	else	3217	else
3059	#endif	3218	#endif
		3219	{
3060	ev_timer_again (EV_A_ &w->timer);	3220	ev_timer_again (EV_A_ &w->timer);
		3221	ev_unref (EV_A);
		3222	}
3061		3223
3062	ev_start (EV_A_ (W)w, 1);	3224	ev_start (EV_A_ (W)w, 1);
3063		3225
3064	EV_FREQUENT_CHECK;	3226	EV_FREQUENT_CHECK;
3065	}	3227	}
…		…
3074	EV_FREQUENT_CHECK;	3236	EV_FREQUENT_CHECK;
3075		3237
3076	#if EV_USE_INOTIFY	3238	#if EV_USE_INOTIFY
3077	infy_del (EV_A_ w);	3239	infy_del (EV_A_ w);
3078	#endif	3240	#endif
		3241
		3242	if (ev_is_active (&w->timer))
		3243	{
		3244	ev_ref (EV_A);
3079	ev_timer_stop (EV_A_ &w->timer);	3245	ev_timer_stop (EV_A_ &w->timer);
		3246	}
3080		3247
3081	ev_stop (EV_A_ (W)w);	3248	ev_stop (EV_A_ (W)w);
3082		3249
3083	EV_FREQUENT_CHECK;	3250	EV_FREQUENT_CHECK;
3084	}	3251	}
…		…
3225	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3392	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3226	{	3393	{
3227	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));	3394	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
3228		3395
3229	{	3396	{
3230	struct ev_loop *loop = w->other;	3397	EV_P = w->other;
3231		3398
3232	while (fdchangecnt)	3399	while (fdchangecnt)
3233	{	3400	{
3234	fd_reify (EV_A);	3401	fd_reify (EV_A);
3235	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3402	ev_loop (EV_A_ EVLOOP_NONBLOCK);
…		…
3243	ev_embed w = (ev_embed )(((char *)fork_w) - offsetof (ev_embed, fork));	3410	ev_embed w = (ev_embed )(((char *)fork_w) - offsetof (ev_embed, fork));
3244		3411
3245	ev_embed_stop (EV_A_ w);	3412	ev_embed_stop (EV_A_ w);
3246		3413
3247	{	3414	{
3248	struct ev_loop *loop = w->other;	3415	EV_P = w->other;
3249		3416
3250	ev_loop_fork (EV_A);	3417	ev_loop_fork (EV_A);
3251	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3418	ev_loop (EV_A_ EVLOOP_NONBLOCK);
3252	}	3419	}
3253		3420
…		…
3267	{	3434	{
3268	if (expect_false (ev_is_active (w)))	3435	if (expect_false (ev_is_active (w)))
3269	return;	3436	return;
3270		3437
3271	{	3438	{
3272	struct ev_loop *loop = w->other;	3439	EV_P = w->other;
3273	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3440	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3274	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3441	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3275	}	3442	}
3276		3443
3277	EV_FREQUENT_CHECK;	3444	EV_FREQUENT_CHECK;
…		…
3304		3471
3305	ev_io_stop (EV_A_ &w->io);	3472	ev_io_stop (EV_A_ &w->io);
3306	ev_prepare_stop (EV_A_ &w->prepare);	3473	ev_prepare_stop (EV_A_ &w->prepare);
3307	ev_fork_stop (EV_A_ &w->fork);	3474	ev_fork_stop (EV_A_ &w->fork);
3308		3475
		3476	ev_stop (EV_A_ (W)w);
		3477
3309	EV_FREQUENT_CHECK;	3478	EV_FREQUENT_CHECK;
3310	}	3479	}
3311	#endif	3480	#endif
3312		3481
3313	#if EV_FORK_ENABLE	3482	#if EV_FORK_ENABLE
…		…
3389		3558
3390	void	3559	void
3391	ev_async_send (EV_P_ ev_async *w)	3560	ev_async_send (EV_P_ ev_async *w)
3392	{	3561	{
3393	w->sent = 1;	3562	w->sent = 1;
3394	evpipe_write (EV_A_ &gotasync);	3563	evpipe_write (EV_A_ &async_pending);
3395	}	3564	}
3396	#endif	3565	#endif
3397		3566
3398	/*****************************************************************************/	3567	/*****************************************************************************/
3399		3568
…		…
3548	if (types & EV_CHECK)	3717	if (types & EV_CHECK)
3549	for (i = checkcnt; i--; )	3718	for (i = checkcnt; i--; )
3550	cb (EV_A_ EV_CHECK, checks [i]);	3719	cb (EV_A_ EV_CHECK, checks [i]);
3551		3720
3552	if (types & EV_SIGNAL)	3721	if (types & EV_SIGNAL)
3553	for (i = 0; i < signalmax; ++i)	3722	for (i = 0; i < EV_NSIG - 1; ++i)
3554	for (wl = signals [i].head; wl; )	3723	for (wl = signals [i].head; wl; )
3555	{	3724	{
3556	wn = wl->next;	3725	wn = wl->next;
3557	cb (EV_A_ EV_SIGNAL, wl);	3726	cb (EV_A_ EV_SIGNAL, wl);
3558	wl = wn;	3727	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 1.303 by root, Sun Jul 19 01:36:34 2009 UTC vs. Revision 1.332 by root, Tue Mar 9 08:58:17 2010 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.303 by root, Sun Jul 19 01:36:34 2009 UTC vs.
Revision 1.332 by root, Tue Mar 9 08:58:17 2010 UTC