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

Comparing libev/ev.c (file contents):
Revision 1.305 by root, Sun Jul 19 03:49:04 2009 UTC vs.
Revision 1.331 by root, Tue Mar 9 08:55:03 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 */
190		193
191	/* try to deduce the maximum number of signals on this platform */	194	/* try to deduce the maximum number of signals on this platform */
…		…
210	#elif defined (_sys_nsig)	213	#elif defined (_sys_nsig)
211	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */	214	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
212	#else	215	#else
213	# error "unable to find value for NSIG, please report"	216	# error "unable to find value for NSIG, please report"
214	/* to make it compile regardless, just remove the above line */	217	/* to make it compile regardless, just remove the above line */
215	# define EV_NSIG 64	218	# define EV_NSIG 65
216	#endif	219	#endif
217		220
218	/* Default to some arbitrary number that's big enough to get most
219	of the common signals.
220	*/
221	#ifndef NSIG
222	# define NSIG 50
223	#endif
224	/* <-- NSIG logic from Configure */
225	#ifndef EV_USE_CLOCK_SYSCALL	221	#ifndef EV_USE_CLOCK_SYSCALL
226	# if __linux && __GLIBC__ >= 2	222	# if __linux && __GLIBC__ >= 2
227	# define EV_USE_CLOCK_SYSCALL 1	223	# define EV_USE_CLOCK_SYSCALL 1
228	# else	224	# else
229	# define EV_USE_CLOCK_SYSCALL 0	225	# define EV_USE_CLOCK_SYSCALL 0
…		…
309	# define EV_USE_EVENTFD 0	305	# define EV_USE_EVENTFD 0
310	# endif	306	# endif
311	#endif	307	#endif
312		308
313	#ifndef EV_USE_SIGNALFD	309	#ifndef EV_USE_SIGNALFD
314	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9))	310	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
315	# define EV_USE_SIGNALFD 1	311	# define EV_USE_SIGNALFD 1
316	# else	312	# else
317	# define EV_USE_SIGNALFD 0	313	# define EV_USE_SIGNALFD 0
318	# endif	314	# endif
319	#endif	315	#endif
…		…
350	# endif	346	# endif
351	#endif	347	#endif
352		348
353	/* 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 */
354		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
355	#ifndef CLOCK_MONOTONIC	357	#ifndef CLOCK_MONOTONIC
356	# undef EV_USE_MONOTONIC	358	# undef EV_USE_MONOTONIC
357	# define EV_USE_MONOTONIC 0	359	# define EV_USE_MONOTONIC 0
358	#endif	360	#endif
359		361
…		…
393	# include <stdint.h>	395	# include <stdint.h>
394	# ifndef EFD_NONBLOCK	396	# ifndef EFD_NONBLOCK
395	# define EFD_NONBLOCK O_NONBLOCK	397	# define EFD_NONBLOCK O_NONBLOCK
396	# endif	398	# endif
397	# ifndef EFD_CLOEXEC	399	# ifndef EFD_CLOEXEC
		400	# ifdef O_CLOEXEC
398	# define EFD_CLOEXEC O_CLOEXEC	401	# define EFD_CLOEXEC O_CLOEXEC
		402	# else
		403	# define EFD_CLOEXEC 02000000
		404	# endif
399	# endif	405	# endif
400	# ifdef __cplusplus	406	# ifdef __cplusplus
401	extern "C" {	407	extern "C" {
402	# endif	408	# endif
403	int eventfd (unsigned int initval, int flags);	409	int (eventfd) (unsigned int initval, int flags);
404	# ifdef __cplusplus	410	# ifdef __cplusplus
405	}	411	}
406	# endif	412	# endif
407	#endif	413	#endif
408		414
409	#if EV_USE_SIGNALFD	415	#if EV_USE_SIGNALFD
410	# 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
411	#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
412		443
413	/**/	444	/**/
414		445
415	#if EV_VERIFY >= 3	446	#if EV_VERIFY >= 3
416	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)	447	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
…		…
428	*/	459	*/
429	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	460	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
430		461
431	#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) */
432	#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) */
433	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds, TODO */
434		464
435	#if __GNUC__ >= 4	465	#if __GNUC__ >= 4
436	# define expect(expr,value) __builtin_expect ((expr),(value))	466	# define expect(expr,value) __builtin_expect ((expr),(value))
437	# define noinline __attribute__ ((noinline))	467	# define noinline __attribute__ ((noinline))
438	#else	468	#else
…		…
479		509
480	#if EV_USE_MONOTONIC	510	#if EV_USE_MONOTONIC
481	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? */
482	#endif	512	#endif
483		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
484	#ifdef _WIN32	524	#ifdef _WIN32
485	# include "ev_win32.c"	525	# include "ev_win32.c"
486	#endif	526	#endif
487		527
488	/*****************************************************************************/	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
489		537
490	static void (syserr_cb)(const char msg);	538	static void (syserr_cb)(const char msg);
491		539
492	void	540	void
493	ev_set_syserr_cb (void (cb)(const char msg))	541	ev_set_syserr_cb (void (cb)(const char msg))
…		…
503		551
504	if (syserr_cb)	552	if (syserr_cb)
505	syserr_cb (msg);	553	syserr_cb (msg);
506	else	554	else
507	{	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
508	perror (msg);	564	perror (msg);
		565	#endif
509	abort ();	566	abort ();
510	}	567	}
511	}	568	}
512		569
513	static void *	570	static void *
…		…
538	{	595	{
539	ptr = alloc (ptr, size);	596	ptr = alloc (ptr, size);
540		597
541	if (!ptr && size)	598	if (!ptr && size)
542	{	599	{
		600	#if EV_AVOID_STDIO
		601	ev_printerr ("libev: memory allocation failed, aborting.\n");
		602	#else
543	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	603	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		604	#endif
544	abort ();	605	abort ();
545	}	606	}
546		607
547	return ptr;	608	return ptr;
548	}	609	}
…		…
879		940
880	#if EV_SELECT_IS_WINSOCKET	941	#if EV_SELECT_IS_WINSOCKET
881	if (events)	942	if (events)
882	{	943	{
883	unsigned long arg;	944	unsigned long arg;
884	#ifdef EV_FD_TO_WIN32_HANDLE
885	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	945	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
886	#else
887	anfd->handle = _get_osfhandle (fd);
888	#endif
889	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	946	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
890	}	947	}
891	#endif	948	#endif
892		949
893	{	950	{
…		…
936	/* check whether the given fd is atcually valid, for error recovery */	993	/* check whether the given fd is atcually valid, for error recovery */
937	inline_size int	994	inline_size int
938	fd_valid (int fd)	995	fd_valid (int fd)
939	{	996	{
940	#ifdef _WIN32	997	#ifdef _WIN32
941	return _get_osfhandle (fd) != -1;	998	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
942	#else	999	#else
943	return fcntl (fd, F_GETFD) != -1;	1000	return fcntl (fd, F_GETFD) != -1;
944	#endif	1001	#endif
945	}	1002	}
946		1003
…		…
964		1021
965	for (fd = anfdmax; fd--; )	1022	for (fd = anfdmax; fd--; )
966	if (anfds [fd].events)	1023	if (anfds [fd].events)
967	{	1024	{
968	fd_kill (EV_A_ fd);	1025	fd_kill (EV_A_ fd);
969	return;	1026	break;
970	}	1027	}
971	}	1028	}
972		1029
973	/* usually called after fork if backend needs to re-arm all fds from scratch */	1030	/* usually called after fork if backend needs to re-arm all fds from scratch */
974	static void noinline	1031	static void noinline
…		…
1064		1121
1065	for (;;)	1122	for (;;)
1066	{	1123	{
1067	int c = k << 1;	1124	int c = k << 1;
1068		1125
1069	if (c > N + HEAP0 - 1)	1126	if (c >= N + HEAP0)
1070	break;	1127	break;
1071		1128
1072	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])	1129	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1073	? 1 : 0;	1130	? 1 : 0;
1074		1131
…		…
1110		1167
1111	/* move an element suitably so it is in a correct place */	1168	/* move an element suitably so it is in a correct place */
1112	inline_size void	1169	inline_size void
1113	adjustheap (ANHE *heap, int N, int k)	1170	adjustheap (ANHE *heap, int N, int k)
1114	{	1171	{
1115	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1172	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1116	upheap (heap, k);	1173	upheap (heap, k);
1117	else	1174	else
1118	downheap (heap, N, k);	1175	downheap (heap, N, k);
1119	}	1176	}
1120		1177
…		…
1133	/*****************************************************************************/	1190	/*****************************************************************************/
1134		1191
1135	/* associate signal watchers to a signal signal */	1192	/* associate signal watchers to a signal signal */
1136	typedef struct	1193	typedef struct
1137	{	1194	{
		1195	EV_ATOMIC_T pending;
		1196	#if EV_MULTIPLICITY
		1197	EV_P;
		1198	#endif
1138	WL head;	1199	WL head;
1139	EV_ATOMIC_T gotsig;
1140	} ANSIG;	1200	} ANSIG;
1141		1201
1142	static ANSIG *signals;	1202	static ANSIG signals [EV_NSIG - 1];
1143	static int signalmax;
1144
1145	static EV_ATOMIC_T gotsig;
1146		1203
1147	/*****************************************************************************/	1204	/*****************************************************************************/
1148		1205
1149	/* used to prepare libev internal fd's */	1206	/* used to prepare libev internal fd's */
1150	/* this is not fork-safe */	1207	/* this is not fork-safe */
1151	inline_speed void	1208	inline_speed void
1152	fd_intern (int fd)	1209	fd_intern (int fd)
1153	{	1210	{
1154	#ifdef _WIN32	1211	#ifdef _WIN32
1155	unsigned long arg = 1;	1212	unsigned long arg = 1;
1156	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1213	ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1157	#else	1214	#else
1158	fcntl (fd, F_SETFD, FD_CLOEXEC);	1215	fcntl (fd, F_SETFD, FD_CLOEXEC);
1159	fcntl (fd, F_SETFL, O_NONBLOCK);	1216	fcntl (fd, F_SETFL, O_NONBLOCK);
1160	#endif	1217	#endif
1161	}	1218	}
…		…
1218	/* called whenever the libev signal pipe */	1275	/* called whenever the libev signal pipe */
1219	/* got some events (signal, async) */	1276	/* got some events (signal, async) */
1220	static void	1277	static void
1221	pipecb (EV_P_ ev_io *iow, int revents)	1278	pipecb (EV_P_ ev_io *iow, int revents)
1222	{	1279	{
		1280	int i;
		1281
1223	#if EV_USE_EVENTFD	1282	#if EV_USE_EVENTFD
1224	if (evfd >= 0)	1283	if (evfd >= 0)
1225	{	1284	{
1226	uint64_t counter;	1285	uint64_t counter;
1227	read (evfd, &counter, sizeof (uint64_t));	1286	read (evfd, &counter, sizeof (uint64_t));
…		…
1231	{	1290	{
1232	char dummy;	1291	char dummy;
1233	read (evpipe [0], &dummy, 1);	1292	read (evpipe [0], &dummy, 1);
1234	}	1293	}
1235		1294
1236	if (gotsig && ev_is_default_loop (EV_A))	1295	if (sig_pending)
1237	{	1296	{
1238	int signum;	1297	sig_pending = 0;
1239	gotsig = 0;
1240		1298
1241	for (signum = signalmax; signum--; )	1299	for (i = EV_NSIG - 1; i--; )
1242	if (signals [signum].gotsig)	1300	if (expect_false (signals [i].pending))
1243	ev_feed_signal_event (EV_A_ signum + 1);	1301	ev_feed_signal_event (EV_A_ i + 1);
1244	}	1302	}
1245		1303
1246	#if EV_ASYNC_ENABLE	1304	#if EV_ASYNC_ENABLE
1247	if (gotasync)	1305	if (async_pending)
1248	{	1306	{
1249	int i;	1307	async_pending = 0;
1250	gotasync = 0;
1251		1308
1252	for (i = asynccnt; i--; )	1309	for (i = asynccnt; i--; )
1253	if (asyncs [i]->sent)	1310	if (asyncs [i]->sent)
1254	{	1311	{
1255	asyncs [i]->sent = 0;	1312	asyncs [i]->sent = 0;
…		…
1263		1320
1264	static void	1321	static void
1265	ev_sighandler (int signum)	1322	ev_sighandler (int signum)
1266	{	1323	{
1267	#if EV_MULTIPLICITY	1324	#if EV_MULTIPLICITY
1268	struct ev_loop *loop = &default_loop_struct;	1325	EV_P = signals [signum - 1].loop;
1269	#endif	1326	#endif
1270		1327
1271	#if _WIN32	1328	#ifdef _WIN32
1272	signal (signum, ev_sighandler);	1329	signal (signum, ev_sighandler);
1273	#endif	1330	#endif
1274		1331
1275	signals [signum - 1].gotsig = 1;	1332	signals [signum - 1].pending = 1;
1276	evpipe_write (EV_A_ &gotsig);	1333	evpipe_write (EV_A_ &sig_pending);
1277	}	1334	}
1278		1335
1279	void noinline	1336	void noinline
1280	ev_feed_signal_event (EV_P_ int signum)	1337	ev_feed_signal_event (EV_P_ int signum)
1281	{	1338	{
1282	WL w;	1339	WL w;
1283		1340
		1341	if (expect_false (signum <= 0 \|\| signum > EV_NSIG))
		1342	return;
		1343
		1344	--signum;
		1345
1284	#if EV_MULTIPLICITY	1346	#if EV_MULTIPLICITY
1285	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1347	/* it is permissible to try to feed a signal to the wrong loop */
1286	#endif	1348	/* or, likely more useful, feeding a signal nobody is waiting for */
1287		1349
1288	--signum;	1350	if (expect_false (signals [signum].loop != EV_A))
1289
1290	if (signum < 0 \|\| signum >= signalmax)
1291	return;	1351	return;
		1352	#endif
1292		1353
1293	signals [signum].gotsig = 0;	1354	signals [signum].pending = 0;
1294		1355
1295	for (w = signals [signum].head; w; w = w->next)	1356	for (w = signals [signum].head; w; w = w->next)
1296	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1357	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1297	}	1358	}
1298		1359
1299	#if EV_USE_SIGNALFD	1360	#if EV_USE_SIGNALFD
1300	static void	1361	static void
1301	sigfdcb (EV_P_ ev_io *iow, int revents)	1362	sigfdcb (EV_P_ ev_io *iow, int revents)
1302	{	1363	{
1303	struct signalfd_siginfo si[4], *sip;	1364	struct signalfd_siginfo si[2], sip; / these structs are big */
1304		1365
1305	for (;;)	1366	for (;;)
1306	{	1367	{
1307	ssize_t res = read (sigfd, si, sizeof (si));	1368	ssize_t res = read (sigfd, si, sizeof (si));
1308		1369
…		…
1542	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1603	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1543	have_monotonic = 1;	1604	have_monotonic = 1;
1544	}	1605	}
1545	#endif	1606	#endif
1546		1607
		1608	/* pid check not overridable via env */
		1609	#ifndef _WIN32
		1610	if (flags & EVFLAG_FORKCHECK)
		1611	curpid = getpid ();
		1612	#endif
		1613
		1614	if (!(flags & EVFLAG_NOENV)
		1615	&& !enable_secure ()
		1616	&& getenv ("LIBEV_FLAGS"))
		1617	flags = atoi (getenv ("LIBEV_FLAGS"));
		1618
1547	ev_rt_now = ev_time ();	1619	ev_rt_now = ev_time ();
1548	mn_now = get_clock ();	1620	mn_now = get_clock ();
1549	now_floor = mn_now;	1621	now_floor = mn_now;
1550	rtmn_diff = ev_rt_now - mn_now;	1622	rtmn_diff = ev_rt_now - mn_now;
1551	#if EV_MINIMAL < 2	1623	#if EV_MINIMAL < 2
…		…
1554		1626
1555	io_blocktime = 0.;	1627	io_blocktime = 0.;
1556	timeout_blocktime = 0.;	1628	timeout_blocktime = 0.;
1557	backend = 0;	1629	backend = 0;
1558	backend_fd = -1;	1630	backend_fd = -1;
1559	gotasync = 0;	1631	sig_pending = 0;
		1632	#if EV_ASYNC_ENABLE
		1633	async_pending = 0;
		1634	#endif
1560	#if EV_USE_INOTIFY	1635	#if EV_USE_INOTIFY
1561	fs_fd = -2;	1636	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1562	#endif	1637	#endif
1563	#if EV_USE_SIGNALFD	1638	#if EV_USE_SIGNALFD
1564	sigfd = -2;	1639	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1565	#endif	1640	#endif
1566
1567	/* pid check not overridable via env */
1568	#ifndef _WIN32
1569	if (flags & EVFLAG_FORKCHECK)
1570	curpid = getpid ();
1571	#endif
1572
1573	if (!(flags & EVFLAG_NOENV)
1574	&& !enable_secure ()
1575	&& getenv ("LIBEV_FLAGS"))
1576	flags = atoi (getenv ("LIBEV_FLAGS"));
1577		1641
1578	if (!(flags & 0x0000ffffU))	1642	if (!(flags & 0x0000ffffU))
1579	flags \|= ev_recommended_backends ();	1643	flags \|= ev_recommended_backends ();
1580		1644
1581	#if EV_USE_PORT	1645	#if EV_USE_PORT
…		…
1617	close (evfd);	1681	close (evfd);
1618	#endif	1682	#endif
1619		1683
1620	if (evpipe [0] >= 0)	1684	if (evpipe [0] >= 0)
1621	{	1685	{
1622	close (evpipe [0]);	1686	EV_WIN32_CLOSE_FD (evpipe [0]);
1623	close (evpipe [1]);	1687	EV_WIN32_CLOSE_FD (evpipe [1]);
1624	}	1688	}
1625	}	1689	}
1626		1690
1627	#if EV_USE_SIGNALFD	1691	#if EV_USE_SIGNALFD
1628	if (ev_is_active (&sigfd_w))	1692	if (ev_is_active (&sigfd_w))
1629	{
1630	/ev_ref (EV_A);/
1631	/ev_io_stop (EV_A_ &sigfd_w);/
1632
1633	close (sigfd);	1693	close (sigfd);
1634	}
1635	#endif	1694	#endif
1636		1695
1637	#if EV_USE_INOTIFY	1696	#if EV_USE_INOTIFY
1638	if (fs_fd >= 0)	1697	if (fs_fd >= 0)
1639	close (fs_fd);	1698	close (fs_fd);
…		…
1709		1768
1710	if (ev_is_active (&pipe_w))	1769	if (ev_is_active (&pipe_w))
1711	{	1770	{
1712	/* this "locks" the handlers against writing to the pipe */	1771	/* this "locks" the handlers against writing to the pipe */
1713	/* while we modify the fd vars */	1772	/* while we modify the fd vars */
1714	gotsig = 1;	1773	sig_pending = 1;
1715	#if EV_ASYNC_ENABLE	1774	#if EV_ASYNC_ENABLE
1716	gotasync = 1;	1775	async_pending = 1;
1717	#endif	1776	#endif
1718		1777
1719	ev_ref (EV_A);	1778	ev_ref (EV_A);
1720	ev_io_stop (EV_A_ &pipe_w);	1779	ev_io_stop (EV_A_ &pipe_w);
1721		1780
…		…
1724	close (evfd);	1783	close (evfd);
1725	#endif	1784	#endif
1726		1785
1727	if (evpipe [0] >= 0)	1786	if (evpipe [0] >= 0)
1728	{	1787	{
1729	close (evpipe [0]);	1788	EV_WIN32_CLOSE_FD (evpipe [0]);
1730	close (evpipe [1]);	1789	EV_WIN32_CLOSE_FD (evpipe [1]);
1731	}	1790	}
1732		1791
1733	evpipe_init (EV_A);	1792	evpipe_init (EV_A);
1734	/* now iterate over everything, in case we missed something */	1793	/* now iterate over everything, in case we missed something */
1735	pipecb (EV_A_ &pipe_w, EV_READ);	1794	pipecb (EV_A_ &pipe_w, EV_READ);
…		…
1741	#if EV_MULTIPLICITY	1800	#if EV_MULTIPLICITY
1742		1801
1743	struct ev_loop *	1802	struct ev_loop *
1744	ev_loop_new (unsigned int flags)	1803	ev_loop_new (unsigned int flags)
1745	{	1804	{
1746	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));	1805	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1747		1806
1748	memset (loop, 0, sizeof (struct ev_loop));	1807	memset (EV_A, 0, sizeof (struct ev_loop));
1749	loop_init (EV_A_ flags);	1808	loop_init (EV_A_ flags);
1750		1809
1751	if (ev_backend (EV_A))	1810	if (ev_backend (EV_A))
1752	return loop;	1811	return EV_A;
1753		1812
1754	return 0;	1813	return 0;
1755	}	1814	}
1756		1815
1757	void	1816	void
…		…
1861	assert (checkmax >= checkcnt);	1920	assert (checkmax >= checkcnt);
1862	array_verify (EV_A_ (W *)checks, checkcnt);	1921	array_verify (EV_A_ (W *)checks, checkcnt);
1863		1922
1864	# if 0	1923	# if 0
1865	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	1924	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
1866	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)	1925	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1867	# endif	1926	# endif
1868	#endif	1927	#endif
1869	}	1928	}
1870	#endif	1929	#endif
1871		1930
…		…
1878	#endif	1937	#endif
1879	{	1938	{
1880	if (!ev_default_loop_ptr)	1939	if (!ev_default_loop_ptr)
1881	{	1940	{
1882	#if EV_MULTIPLICITY	1941	#if EV_MULTIPLICITY
1883	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1942	EV_P = ev_default_loop_ptr = &default_loop_struct;
1884	#else	1943	#else
1885	ev_default_loop_ptr = 1;	1944	ev_default_loop_ptr = 1;
1886	#endif	1945	#endif
1887		1946
1888	loop_init (EV_A_ flags);	1947	loop_init (EV_A_ flags);
…		…
1905		1964
1906	void	1965	void
1907	ev_default_destroy (void)	1966	ev_default_destroy (void)
1908	{	1967	{
1909	#if EV_MULTIPLICITY	1968	#if EV_MULTIPLICITY
1910	struct ev_loop *loop = ev_default_loop_ptr;	1969	EV_P = ev_default_loop_ptr;
1911	#endif	1970	#endif
1912		1971
1913	ev_default_loop_ptr = 0;	1972	ev_default_loop_ptr = 0;
1914		1973
1915	#ifndef _WIN32	1974	#ifndef _WIN32
…		…
1922		1981
1923	void	1982	void
1924	ev_default_fork (void)	1983	ev_default_fork (void)
1925	{	1984	{
1926	#if EV_MULTIPLICITY	1985	#if EV_MULTIPLICITY
1927	struct ev_loop *loop = ev_default_loop_ptr;	1986	EV_P = ev_default_loop_ptr;
1928	#endif	1987	#endif
1929		1988
1930	postfork = 1; /* must be in line with ev_loop_fork */	1989	postfork = 1; /* must be in line with ev_loop_fork */
1931	}	1990	}
1932		1991
…		…
2127	ANHE_at_cache (*he);	2186	ANHE_at_cache (*he);
2128	}	2187	}
2129	}	2188	}
2130		2189
2131	/* fetch new monotonic and realtime times from the kernel */	2190	/* fetch new monotonic and realtime times from the kernel */
2132	/* also detetc if there was a timejump, and act accordingly */	2191	/* also detect if there was a timejump, and act accordingly */
2133	inline_speed void	2192	inline_speed void
2134	time_update (EV_P_ ev_tstamp max_block)	2193	time_update (EV_P_ ev_tstamp max_block)
2135	{	2194	{
2136	#if EV_USE_MONOTONIC	2195	#if EV_USE_MONOTONIC
2137	if (expect_true (have_monotonic))	2196	if (expect_true (have_monotonic))
…		…
2398	inline_size void	2457	inline_size void
2399	wlist_del (WL *head, WL elem)	2458	wlist_del (WL *head, WL elem)
2400	{	2459	{
2401	while (*head)	2460	while (*head)
2402	{	2461	{
2403	if (*head == elem)	2462	if (expect_true (*head == elem))
2404	{	2463	{
2405	*head = elem->next;	2464	*head = elem->next;
2406	return;	2465	break;
2407	}	2466	}
2408		2467
2409	head = &(*head)->next;	2468	head = &(*head)->next;
2410	}	2469	}
2411	}	2470	}
…		…
2471		2530
2472	if (expect_false (ev_is_active (w)))	2531	if (expect_false (ev_is_active (w)))
2473	return;	2532	return;
2474		2533
2475	assert (("libev: ev_io_start called with negative fd", fd >= 0));	2534	assert (("libev: ev_io_start called with negative fd", fd >= 0));
2476	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET \| EV_READ \| EV_WRITE))));	2535	assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET \| EV_READ \| EV_WRITE))));
2477		2536
2478	EV_FREQUENT_CHECK;	2537	EV_FREQUENT_CHECK;
2479		2538
2480	ev_start (EV_A_ (W)w, 1);	2539	ev_start (EV_A_ (W)w, 1);
2481	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2540	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
…		…
2551	timers [active] = timers [timercnt + HEAP0];	2610	timers [active] = timers [timercnt + HEAP0];
2552	adjustheap (timers, timercnt, active);	2611	adjustheap (timers, timercnt, active);
2553	}	2612	}
2554	}	2613	}
2555		2614
2556	EV_FREQUENT_CHECK;
2557
2558	ev_at (w) -= mn_now;	2615	ev_at (w) -= mn_now;
2559		2616
2560	ev_stop (EV_A_ (W)w);	2617	ev_stop (EV_A_ (W)w);
		2618
		2619	EV_FREQUENT_CHECK;
2561	}	2620	}
2562		2621
2563	void noinline	2622	void noinline
2564	ev_timer_again (EV_P_ ev_timer *w)	2623	ev_timer_again (EV_P_ ev_timer *w)
2565	{	2624	{
…		…
2644	periodics [active] = periodics [periodiccnt + HEAP0];	2703	periodics [active] = periodics [periodiccnt + HEAP0];
2645	adjustheap (periodics, periodiccnt, active);	2704	adjustheap (periodics, periodiccnt, active);
2646	}	2705	}
2647	}	2706	}
2648		2707
2649	EV_FREQUENT_CHECK;
2650
2651	ev_stop (EV_A_ (W)w);	2708	ev_stop (EV_A_ (W)w);
		2709
		2710	EV_FREQUENT_CHECK;
2652	}	2711	}
2653		2712
2654	void noinline	2713	void noinline
2655	ev_periodic_again (EV_P_ ev_periodic *w)	2714	ev_periodic_again (EV_P_ ev_periodic *w)
2656	{	2715	{
…		…
2665	#endif	2724	#endif
2666		2725
2667	void noinline	2726	void noinline
2668	ev_signal_start (EV_P_ ev_signal *w)	2727	ev_signal_start (EV_P_ ev_signal *w)
2669	{	2728	{
2670	#if EV_MULTIPLICITY
2671	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2672	#endif
2673	if (expect_false (ev_is_active (w)))	2729	if (expect_false (ev_is_active (w)))
2674	return;	2730	return;
2675		2731
2676	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));	2732	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
		2733
		2734	#if EV_MULTIPLICITY
		2735	assert (("libev: a signal must not be attached to two different loops",
		2736	!signals [w->signum - 1].loop \|\| signals [w->signum - 1].loop == loop));
		2737
		2738	signals [w->signum - 1].loop = EV_A;
		2739	#endif
2677		2740
2678	EV_FREQUENT_CHECK;	2741	EV_FREQUENT_CHECK;
2679		2742
2680	#if EV_USE_SIGNALFD	2743	#if EV_USE_SIGNALFD
2681	if (sigfd == -2)	2744	if (sigfd == -2)
…		…
2703	sigaddset (&sigfd_set, w->signum);	2766	sigaddset (&sigfd_set, w->signum);
2704	sigprocmask (SIG_BLOCK, &sigfd_set, 0);	2767	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2705		2768
2706	signalfd (sigfd, &sigfd_set, 0);	2769	signalfd (sigfd, &sigfd_set, 0);
2707	}	2770	}
2708	else
2709	#endif
2710	evpipe_init (EV_A);
2711
2712	{
2713	#ifndef _WIN32
2714	sigset_t full, prev;
2715	sigfillset (&full);
2716	sigprocmask (SIG_SETMASK, &full, &prev);
2717	#endif
2718
2719	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2720
2721	#ifndef _WIN32
2722	# if EV_USE_SIGNALFD
2723	if (sigfd < 0)/TODO/
2724	# endif	2771	#endif
2725	sigdelset (&prev, w->signum);
2726	sigprocmask (SIG_SETMASK, &prev, 0);
2727	#endif
2728	}
2729		2772
2730	ev_start (EV_A_ (W)w, 1);	2773	ev_start (EV_A_ (W)w, 1);
2731	wlist_add (&signals [w->signum - 1].head, (WL)w);	2774	wlist_add (&signals [w->signum - 1].head, (WL)w);
2732		2775
2733	if (!((WL)w)->next)	2776	if (!((WL)w)->next)
2734	{
2735	#if _WIN32
2736	signal (w->signum, ev_sighandler);
2737	#else
2738	# if EV_USE_SIGNALFD	2777	# if EV_USE_SIGNALFD
2739	if (sigfd < 0) /TODO/	2778	if (sigfd < 0) /TODO/
2740	# endif	2779	# endif
2741	{	2780	{
		2781	# ifdef _WIN32
		2782	evpipe_init (EV_A);
		2783
		2784	signal (w->signum, ev_sighandler);
		2785	# else
2742	struct sigaction sa = { };	2786	struct sigaction sa;
		2787
		2788	evpipe_init (EV_A);
		2789
2743	sa.sa_handler = ev_sighandler;	2790	sa.sa_handler = ev_sighandler;
2744	sigfillset (&sa.sa_mask);	2791	sigfillset (&sa.sa_mask);
2745	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2792	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2746	sigaction (w->signum, &sa, 0);	2793	sigaction (w->signum, &sa, 0);
		2794
		2795	sigemptyset (&sa.sa_mask);
		2796	sigaddset (&sa.sa_mask, w->signum);
		2797	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
		2798	#endif
2747	}	2799	}
2748	#endif
2749	}
2750		2800
2751	EV_FREQUENT_CHECK;	2801	EV_FREQUENT_CHECK;
2752	}	2802	}
2753		2803
2754	void noinline	2804	void noinline
…		…
2762		2812
2763	wlist_del (&signals [w->signum - 1].head, (WL)w);	2813	wlist_del (&signals [w->signum - 1].head, (WL)w);
2764	ev_stop (EV_A_ (W)w);	2814	ev_stop (EV_A_ (W)w);
2765		2815
2766	if (!signals [w->signum - 1].head)	2816	if (!signals [w->signum - 1].head)
		2817	{
		2818	#if EV_MULTIPLICITY
		2819	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2820	#endif
2767	#if EV_USE_SIGNALFD	2821	#if EV_USE_SIGNALFD
2768	if (sigfd >= 0)	2822	if (sigfd >= 0)
2769	{	2823	{
2770	sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D	2824	sigset_t ss;
		2825
		2826	sigemptyset (&ss);
		2827	sigaddset (&ss, w->signum);
2771	sigdelset (&sigfd_set, w->signum);	2828	sigdelset (&sigfd_set, w->signum);
		2829
2772	signalfd (sigfd, &sigfd_set, 0);	2830	signalfd (sigfd, &sigfd_set, 0);
2773	sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D	2831	sigprocmask (SIG_UNBLOCK, &ss, 0);
2774	/TODO: maybe unblock signal? /
2775	}	2832	}
2776	else	2833	else
2777	#endif	2834	#endif
2778	signal (w->signum, SIG_DFL);	2835	signal (w->signum, SIG_DFL);
		2836	}
2779		2837
2780	EV_FREQUENT_CHECK;	2838	EV_FREQUENT_CHECK;
2781	}	2839	}
2782		2840
2783	void	2841	void
…		…
2824	#define MIN_STAT_INTERVAL 0.1074891	2882	#define MIN_STAT_INTERVAL 0.1074891
2825		2883
2826	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2884	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2827		2885
2828	#if EV_USE_INOTIFY	2886	#if EV_USE_INOTIFY
2829	# define EV_INOTIFY_BUFSIZE 8192	2887
		2888	/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
		2889	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2830		2890
2831	static void noinline	2891	static void noinline
2832	infy_add (EV_P_ ev_stat *w)	2892	infy_add (EV_P_ ev_stat *w)
2833	{	2893	{
2834	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);	2894	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);
2835		2895
2836	if (w->wd < 0)	2896	if (w->wd >= 0)
		2897	{
		2898	struct statfs sfs;
		2899
		2900	/* now local changes will be tracked by inotify, but remote changes won't */
		2901	/* unless the filesystem is known to be local, we therefore still poll */
		2902	/* also do poll on <2.6.25, but with normal frequency */
		2903
		2904	if (!fs_2625)
		2905	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		2906	else if (!statfs (w->path, &sfs)
		2907	&& (sfs.f_type == 0x1373 /* devfs */
		2908	\|\| sfs.f_type == 0xEF53 /* ext2/3 */
		2909	\|\| sfs.f_type == 0x3153464a /* jfs */
		2910	\|\| sfs.f_type == 0x52654973 /* reiser3 */
		2911	\|\| sfs.f_type == 0x01021994 /* tempfs */
		2912	\|\| sfs.f_type == 0x58465342 /* xfs */))
		2913	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
		2914	else
		2915	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2837	{	2916	}
		2917	else
		2918	{
		2919	/* can't use inotify, continue to stat */
2838	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;	2920	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2839	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2840		2921
2841	/* monitor some parent directory for speedup hints */	2922	/* if path is not there, monitor some parent directory for speedup hints */
2842	/* note that exceeding the hardcoded path limit is not a correctness issue, */	2923	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2843	/* but an efficiency issue only */	2924	/* but an efficiency issue only */
2844	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)	2925	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)
2845	{	2926	{
2846	char path [4096];	2927	char path [4096];
…		…
2862	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));	2943	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));
2863	}	2944	}
2864	}	2945	}
2865		2946
2866	if (w->wd >= 0)	2947	if (w->wd >= 0)
2867	{
2868	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2948	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2869		2949
2870	/* now local changes will be tracked by inotify, but remote changes won't */	2950	/* now re-arm timer, if required */
2871	/* unless the filesystem it known to be local, we therefore still poll */	2951	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2872	/* also do poll on <2.6.25, but with normal frequency */
2873	struct statfs sfs;
2874
2875	if (fs_2625 && !statfs (w->path, &sfs))
2876	if (sfs.f_type == 0x1373 /* devfs */
2877	\|\| sfs.f_type == 0xEF53 /* ext2/3 */
2878	\|\| sfs.f_type == 0x3153464a /* jfs */
2879	\|\| sfs.f_type == 0x52654973 /* reiser3 */
2880	\|\| sfs.f_type == 0x01021994 /* tempfs */
2881	\|\| sfs.f_type == 0x58465342 /* xfs */)
2882	return;
2883
2884	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2885	ev_timer_again (EV_A_ &w->timer);	2952	ev_timer_again (EV_A_ &w->timer);
2886	}	2953	if (ev_is_active (&w->timer)) ev_unref (EV_A);
2887	}	2954	}
2888		2955
2889	static void noinline	2956	static void noinline
2890	infy_del (EV_P_ ev_stat *w)	2957	infy_del (EV_P_ ev_stat *w)
2891	{	2958	{
…		…
2936		3003
2937	static void	3004	static void
2938	infy_cb (EV_P_ ev_io *w, int revents)	3005	infy_cb (EV_P_ ev_io *w, int revents)
2939	{	3006	{
2940	char buf [EV_INOTIFY_BUFSIZE];	3007	char buf [EV_INOTIFY_BUFSIZE];
2941	struct inotify_event ev = (struct inotify_event )buf;
2942	int ofs;	3008	int ofs;
2943	int len = read (fs_fd, buf, sizeof (buf));	3009	int len = read (fs_fd, buf, sizeof (buf));
2944		3010
2945	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	3011	for (ofs = 0; ofs < len; )
		3012	{
		3013	struct inotify_event ev = (struct inotify_event )(buf + ofs);
2946	infy_wd (EV_A_ ev->wd, ev->wd, ev);	3014	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		3015	ofs += sizeof (struct inotify_event) + ev->len;
		3016	}
		3017	}
		3018
		3019	inline_size unsigned int
		3020	ev_linux_version (void)
		3021	{
		3022	struct utsname buf;
		3023	unsigned int v;
		3024	int i;
		3025	char *p = buf.release;
		3026
		3027	if (uname (&buf))
		3028	return 0;
		3029
		3030	for (i = 3+1; --i; )
		3031	{
		3032	unsigned int c = 0;
		3033
		3034	for (;;)
		3035	{
		3036	if (p >= '0' && p <= '9')
		3037	c = c * 10 + *p++ - '0';
		3038	else
		3039	{
		3040	p += *p == '.';
		3041	break;
		3042	}
		3043	}
		3044
		3045	v = (v << 8) \| c;
		3046	}
		3047
		3048	return v;
2947	}	3049	}
2948		3050
2949	inline_size void	3051	inline_size void
2950	check_2625 (EV_P)	3052	ev_check_2625 (EV_P)
2951	{	3053	{
2952	/* kernels < 2.6.25 are borked	3054	/* kernels < 2.6.25 are borked
2953	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html	3055	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2954	*/	3056	*/
2955	struct utsname buf;	3057	if (ev_linux_version () < 0x020619)
2956	int major, minor, micro;
2957
2958	if (uname (&buf))
2959	return;	3058	return;
2960		3059
2961	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2962	return;
2963
2964	if (major < 2
2965	\|\| (major == 2 && minor < 6)
2966	\|\| (major == 2 && minor == 6 && micro < 25))
2967	return;
2968
2969	fs_2625 = 1;	3060	fs_2625 = 1;
		3061	}
		3062
		3063	inline_size int
		3064	infy_newfd (void)
		3065	{
		3066	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3067	int fd = inotify_init1 (IN_CLOEXEC \| IN_NONBLOCK);
		3068	if (fd >= 0)
		3069	return fd;
		3070	#endif
		3071	return inotify_init ();
2970	}	3072	}
2971		3073
2972	inline_size void	3074	inline_size void
2973	infy_init (EV_P)	3075	infy_init (EV_P)
2974	{	3076	{
2975	if (fs_fd != -2)	3077	if (fs_fd != -2)
2976	return;	3078	return;
2977		3079
2978	fs_fd = -1;	3080	fs_fd = -1;
2979		3081
2980	check_2625 (EV_A);	3082	ev_check_2625 (EV_A);
2981		3083
2982	fs_fd = inotify_init ();	3084	fs_fd = infy_newfd ();
2983		3085
2984	if (fs_fd >= 0)	3086	if (fs_fd >= 0)
2985	{	3087	{
		3088	fd_intern (fs_fd);
2986	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3089	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2987	ev_set_priority (&fs_w, EV_MAXPRI);	3090	ev_set_priority (&fs_w, EV_MAXPRI);
2988	ev_io_start (EV_A_ &fs_w);	3091	ev_io_start (EV_A_ &fs_w);
		3092	ev_unref (EV_A);
2989	}	3093	}
2990	}	3094	}
2991		3095
2992	inline_size void	3096	inline_size void
2993	infy_fork (EV_P)	3097	infy_fork (EV_P)
…		…
2995	int slot;	3099	int slot;
2996		3100
2997	if (fs_fd < 0)	3101	if (fs_fd < 0)
2998	return;	3102	return;
2999		3103
		3104	ev_ref (EV_A);
		3105	ev_io_stop (EV_A_ &fs_w);
3000	close (fs_fd);	3106	close (fs_fd);
3001	fs_fd = inotify_init ();	3107	fs_fd = infy_newfd ();
		3108
		3109	if (fs_fd >= 0)
		3110	{
		3111	fd_intern (fs_fd);
		3112	ev_io_set (&fs_w, fs_fd, EV_READ);
		3113	ev_io_start (EV_A_ &fs_w);
		3114	ev_unref (EV_A);
		3115	}
3002		3116
3003	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3117	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
3004	{	3118	{
3005	WL w_ = fs_hash [slot].head;	3119	WL w_ = fs_hash [slot].head;
3006	fs_hash [slot].head = 0;	3120	fs_hash [slot].head = 0;
…		…
3013	w->wd = -1;	3127	w->wd = -1;
3014		3128
3015	if (fs_fd >= 0)	3129	if (fs_fd >= 0)
3016	infy_add (EV_A_ w); /* re-add, no matter what */	3130	infy_add (EV_A_ w); /* re-add, no matter what */
3017	else	3131	else
		3132	{
		3133	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3134	if (ev_is_active (&w->timer)) ev_ref (EV_A);
3018	ev_timer_again (EV_A_ &w->timer);	3135	ev_timer_again (EV_A_ &w->timer);
		3136	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		3137	}
3019	}	3138	}
3020	}	3139	}
3021	}	3140	}
3022		3141
3023	#endif	3142	#endif
…		…
3040	static void noinline	3159	static void noinline
3041	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	3160	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3042	{	3161	{
3043	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));	3162	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
3044		3163
3045	/* we copy this here each the time so that */	3164	ev_statdata prev = w->attr;
3046	/* prev has the old value when the callback gets invoked */
3047	w->prev = w->attr;
3048	ev_stat_stat (EV_A_ w);	3165	ev_stat_stat (EV_A_ w);
3049		3166
3050	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */	3167	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3051	if (	3168	if (
3052	w->prev.st_dev != w->attr.st_dev	3169	prev.st_dev != w->attr.st_dev
3053	\|\| w->prev.st_ino != w->attr.st_ino	3170	\|\| prev.st_ino != w->attr.st_ino
3054	\|\| w->prev.st_mode != w->attr.st_mode	3171	\|\| prev.st_mode != w->attr.st_mode
3055	\|\| w->prev.st_nlink != w->attr.st_nlink	3172	\|\| prev.st_nlink != w->attr.st_nlink
3056	\|\| w->prev.st_uid != w->attr.st_uid	3173	\|\| prev.st_uid != w->attr.st_uid
3057	\|\| w->prev.st_gid != w->attr.st_gid	3174	\|\| prev.st_gid != w->attr.st_gid
3058	\|\| w->prev.st_rdev != w->attr.st_rdev	3175	\|\| prev.st_rdev != w->attr.st_rdev
3059	\|\| w->prev.st_size != w->attr.st_size	3176	\|\| prev.st_size != w->attr.st_size
3060	\|\| w->prev.st_atime != w->attr.st_atime	3177	\|\| prev.st_atime != w->attr.st_atime
3061	\|\| w->prev.st_mtime != w->attr.st_mtime	3178	\|\| prev.st_mtime != w->attr.st_mtime
3062	\|\| w->prev.st_ctime != w->attr.st_ctime	3179	\|\| prev.st_ctime != w->attr.st_ctime
3063	) {	3180	) {
		3181	/* we only update w->prev on actual differences */
		3182	/* in case we test more often than invoke the callback, */
		3183	/* to ensure that prev is always different to attr */
		3184	w->prev = prev;
		3185
3064	#if EV_USE_INOTIFY	3186	#if EV_USE_INOTIFY
3065	if (fs_fd >= 0)	3187	if (fs_fd >= 0)
3066	{	3188	{
3067	infy_del (EV_A_ w);	3189	infy_del (EV_A_ w);
3068	infy_add (EV_A_ w);	3190	infy_add (EV_A_ w);
…		…
3093		3215
3094	if (fs_fd >= 0)	3216	if (fs_fd >= 0)
3095	infy_add (EV_A_ w);	3217	infy_add (EV_A_ w);
3096	else	3218	else
3097	#endif	3219	#endif
		3220	{
3098	ev_timer_again (EV_A_ &w->timer);	3221	ev_timer_again (EV_A_ &w->timer);
		3222	ev_unref (EV_A);
		3223	}
3099		3224
3100	ev_start (EV_A_ (W)w, 1);	3225	ev_start (EV_A_ (W)w, 1);
3101		3226
3102	EV_FREQUENT_CHECK;	3227	EV_FREQUENT_CHECK;
3103	}	3228	}
…		…
3112	EV_FREQUENT_CHECK;	3237	EV_FREQUENT_CHECK;
3113		3238
3114	#if EV_USE_INOTIFY	3239	#if EV_USE_INOTIFY
3115	infy_del (EV_A_ w);	3240	infy_del (EV_A_ w);
3116	#endif	3241	#endif
		3242
		3243	if (ev_is_active (&w->timer))
		3244	{
		3245	ev_ref (EV_A);
3117	ev_timer_stop (EV_A_ &w->timer);	3246	ev_timer_stop (EV_A_ &w->timer);
		3247	}
3118		3248
3119	ev_stop (EV_A_ (W)w);	3249	ev_stop (EV_A_ (W)w);
3120		3250
3121	EV_FREQUENT_CHECK;	3251	EV_FREQUENT_CHECK;
3122	}	3252	}
…		…
3263	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3393	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3264	{	3394	{
3265	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));	3395	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
3266		3396
3267	{	3397	{
3268	struct ev_loop *loop = w->other;	3398	EV_P = w->other;
3269		3399
3270	while (fdchangecnt)	3400	while (fdchangecnt)
3271	{	3401	{
3272	fd_reify (EV_A);	3402	fd_reify (EV_A);
3273	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3403	ev_loop (EV_A_ EVLOOP_NONBLOCK);
…		…
3281	ev_embed w = (ev_embed )(((char *)fork_w) - offsetof (ev_embed, fork));	3411	ev_embed w = (ev_embed )(((char *)fork_w) - offsetof (ev_embed, fork));
3282		3412
3283	ev_embed_stop (EV_A_ w);	3413	ev_embed_stop (EV_A_ w);
3284		3414
3285	{	3415	{
3286	struct ev_loop *loop = w->other;	3416	EV_P = w->other;
3287		3417
3288	ev_loop_fork (EV_A);	3418	ev_loop_fork (EV_A);
3289	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3419	ev_loop (EV_A_ EVLOOP_NONBLOCK);
3290	}	3420	}
3291		3421
…		…
3305	{	3435	{
3306	if (expect_false (ev_is_active (w)))	3436	if (expect_false (ev_is_active (w)))
3307	return;	3437	return;
3308		3438
3309	{	3439	{
3310	struct ev_loop *loop = w->other;	3440	EV_P = w->other;
3311	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3441	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3312	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3442	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3313	}	3443	}
3314		3444
3315	EV_FREQUENT_CHECK;	3445	EV_FREQUENT_CHECK;
…		…
3342		3472
3343	ev_io_stop (EV_A_ &w->io);	3473	ev_io_stop (EV_A_ &w->io);
3344	ev_prepare_stop (EV_A_ &w->prepare);	3474	ev_prepare_stop (EV_A_ &w->prepare);
3345	ev_fork_stop (EV_A_ &w->fork);	3475	ev_fork_stop (EV_A_ &w->fork);
3346		3476
		3477	ev_stop (EV_A_ (W)w);
		3478
3347	EV_FREQUENT_CHECK;	3479	EV_FREQUENT_CHECK;
3348	}	3480	}
3349	#endif	3481	#endif
3350		3482
3351	#if EV_FORK_ENABLE	3483	#if EV_FORK_ENABLE
…		…
3427		3559
3428	void	3560	void
3429	ev_async_send (EV_P_ ev_async *w)	3561	ev_async_send (EV_P_ ev_async *w)
3430	{	3562	{
3431	w->sent = 1;	3563	w->sent = 1;
3432	evpipe_write (EV_A_ &gotasync);	3564	evpipe_write (EV_A_ &async_pending);
3433	}	3565	}
3434	#endif	3566	#endif
3435		3567
3436	/*****************************************************************************/	3568	/*****************************************************************************/
3437		3569
…		…
3586	if (types & EV_CHECK)	3718	if (types & EV_CHECK)
3587	for (i = checkcnt; i--; )	3719	for (i = checkcnt; i--; )
3588	cb (EV_A_ EV_CHECK, checks [i]);	3720	cb (EV_A_ EV_CHECK, checks [i]);
3589		3721
3590	if (types & EV_SIGNAL)	3722	if (types & EV_SIGNAL)
3591	for (i = 0; i < signalmax; ++i)	3723	for (i = 0; i < EV_NSIG - 1; ++i)
3592	for (wl = signals [i].head; wl; )	3724	for (wl = signals [i].head; wl; )
3593	{	3725	{
3594	wn = wl->next;	3726	wn = wl->next;
3595	cb (EV_A_ EV_SIGNAL, wl);	3727	cb (EV_A_ EV_SIGNAL, wl);
3596	wl = wn;	3728	wl = wn;

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+Removed lines
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Comparing libev/ev.c (file contents): Revision 1.305 by root, Sun Jul 19 03:49:04 2009 UTC vs. Revision 1.331 by root, Tue Mar 9 08:55:03 2010 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.305 by root, Sun Jul 19 03:49:04 2009 UTC vs.
Revision 1.331 by root, Tue Mar 9 08:55:03 2010 UTC