[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 1.336 by root, Wed Mar 10 08:19:38 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 */
…		…
204	#elif defined (MAXSIG)	207	#elif defined (MAXSIG)
205	# define EV_NSIG (MAXSIG+1)	208	# define EV_NSIG (MAXSIG+1)
206	#elif defined (MAX_SIG)	209	#elif defined (MAX_SIG)
207	# define EV_NSIG (MAX_SIG+1)	210	# define EV_NSIG (MAX_SIG+1)
208	#elif defined (SIGARRAYSIZE)	211	#elif defined (SIGARRAYSIZE)
209	# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */	212	# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
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, */
		218	/* but consider reporting it, too! :) */
215	# define EV_NSIG 64	219	# define EV_NSIG 65
216	#endif	220	#endif
217		221
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	222	#ifndef EV_USE_CLOCK_SYSCALL
226	# if __linux && __GLIBC__ >= 2	223	# if __linux && __GLIBC__ >= 2
227	# define EV_USE_CLOCK_SYSCALL 1	224	# define EV_USE_CLOCK_SYSCALL 1
228	# else	225	# else
229	# define EV_USE_CLOCK_SYSCALL 0	226	# define EV_USE_CLOCK_SYSCALL 0
…		…
309	# define EV_USE_EVENTFD 0	306	# define EV_USE_EVENTFD 0
310	# endif	307	# endif
311	#endif	308	#endif
312		309
313	#ifndef EV_USE_SIGNALFD	310	#ifndef EV_USE_SIGNALFD
314	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9))	311	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
315	# define EV_USE_SIGNALFD 1	312	# define EV_USE_SIGNALFD 1
316	# else	313	# else
317	# define EV_USE_SIGNALFD 0	314	# define EV_USE_SIGNALFD 0
318	# endif	315	# endif
319	#endif	316	#endif
…		…
350	# endif	347	# endif
351	#endif	348	#endif
352		349
353	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	350	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
354		351
		352	#ifdef _AIX
		353	/* AIX has a completely broken poll.h header */
		354	# undef EV_USE_POLL
		355	# define EV_USE_POLL 0
		356	#endif
		357
355	#ifndef CLOCK_MONOTONIC	358	#ifndef CLOCK_MONOTONIC
356	# undef EV_USE_MONOTONIC	359	# undef EV_USE_MONOTONIC
357	# define EV_USE_MONOTONIC 0	360	# define EV_USE_MONOTONIC 0
358	#endif	361	#endif
359		362
…		…
393	# include <stdint.h>	396	# include <stdint.h>
394	# ifndef EFD_NONBLOCK	397	# ifndef EFD_NONBLOCK
395	# define EFD_NONBLOCK O_NONBLOCK	398	# define EFD_NONBLOCK O_NONBLOCK
396	# endif	399	# endif
397	# ifndef EFD_CLOEXEC	400	# ifndef EFD_CLOEXEC
		401	# ifdef O_CLOEXEC
398	# define EFD_CLOEXEC O_CLOEXEC	402	# define EFD_CLOEXEC O_CLOEXEC
		403	# else
		404	# define EFD_CLOEXEC 02000000
		405	# endif
399	# endif	406	# endif
400	# ifdef __cplusplus	407	# ifdef __cplusplus
401	extern "C" {	408	extern "C" {
402	# endif	409	# endif
403	int eventfd (unsigned int initval, int flags);	410	int (eventfd) (unsigned int initval, int flags);
404	# ifdef __cplusplus	411	# ifdef __cplusplus
405	}	412	}
406	# endif	413	# endif
407	#endif	414	#endif
408		415
409	#if EV_USE_SIGNALFD	416	#if EV_USE_SIGNALFD
410	# include <sys/signalfd.h>	417	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		418	# include <stdint.h>
		419	# ifndef SFD_NONBLOCK
		420	# define SFD_NONBLOCK O_NONBLOCK
411	#endif	421	# endif
		422	# ifndef SFD_CLOEXEC
		423	# ifdef O_CLOEXEC
		424	# define SFD_CLOEXEC O_CLOEXEC
		425	# else
		426	# define SFD_CLOEXEC 02000000
		427	# endif
		428	# endif
		429	# ifdef __cplusplus
		430	extern "C" {
		431	# endif
		432	int signalfd (int fd, const sigset_t *mask, int flags);
		433
		434	struct signalfd_siginfo
		435	{
		436	uint32_t ssi_signo;
		437	char pad[128 - sizeof (uint32_t)];
		438	};
		439	# ifdef __cplusplus
		440	}
		441	# endif
		442	#endif
		443
412		444
413	/**/	445	/**/
414		446
415	#if EV_VERIFY >= 3	447	#if EV_VERIFY >= 3
416	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)	448	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
…		…
428	*/	460	*/
429	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	461	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
430		462
431	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	463	#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) */	464	#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		465
435	#if __GNUC__ >= 4	466	#if __GNUC__ >= 4
436	# define expect(expr,value) __builtin_expect ((expr),(value))	467	# define expect(expr,value) __builtin_expect ((expr),(value))
437	# define noinline __attribute__ ((noinline))	468	# define noinline __attribute__ ((noinline))
438	#else	469	#else
…		…
479		510
480	#if EV_USE_MONOTONIC	511	#if EV_USE_MONOTONIC
481	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	512	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
482	#endif	513	#endif
483		514
		515	#ifndef EV_FD_TO_WIN32_HANDLE
		516	# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		517	#endif
		518	#ifndef EV_WIN32_HANDLE_TO_FD
		519	# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
		520	#endif
		521	#ifndef EV_WIN32_CLOSE_FD
		522	# define EV_WIN32_CLOSE_FD(fd) close (fd)
		523	#endif
		524
484	#ifdef _WIN32	525	#ifdef _WIN32
485	# include "ev_win32.c"	526	# include "ev_win32.c"
486	#endif	527	#endif
487		528
488	/*****************************************************************************/	529	/*****************************************************************************/
		530
		531	#if EV_AVOID_STDIO
		532	static void noinline
		533	ev_printerr (const char *msg)
		534	{
		535	write (STDERR_FILENO, msg, strlen (msg));
		536	}
		537	#endif
489		538
490	static void (syserr_cb)(const char msg);	539	static void (syserr_cb)(const char msg);
491		540
492	void	541	void
493	ev_set_syserr_cb (void (cb)(const char msg))	542	ev_set_syserr_cb (void (cb)(const char msg))
…		…
503		552
504	if (syserr_cb)	553	if (syserr_cb)
505	syserr_cb (msg);	554	syserr_cb (msg);
506	else	555	else
507	{	556	{
		557	#if EV_AVOID_STDIO
		558	const char *err = strerror (errno);
		559
		560	ev_printerr (msg);
		561	ev_printerr (": ");
		562	ev_printerr (err);
		563	ev_printerr ("\n");
		564	#else
508	perror (msg);	565	perror (msg);
		566	#endif
509	abort ();	567	abort ();
510	}	568	}
511	}	569	}
512		570
513	static void *	571	static void *
514	ev_realloc_emul (void *ptr, long size)	572	ev_realloc_emul (void *ptr, long size)
515	{	573	{
		574	#if __GLIBC__
		575	return realloc (ptr, size);
		576	#else
516	/* some systems, notably openbsd and darwin, fail to properly	577	/* some systems, notably openbsd and darwin, fail to properly
517	* implement realloc (x, 0) (as required by both ansi c-98 and	578	* implement realloc (x, 0) (as required by both ansi c-89 and
518	* the single unix specification, so work around them here.	579	* the single unix specification, so work around them here.
519	*/	580	*/
520		581
521	if (size)	582	if (size)
522	return realloc (ptr, size);	583	return realloc (ptr, size);
523		584
524	free (ptr);	585	free (ptr);
525	return 0;	586	return 0;
		587	#endif
526	}	588	}
527		589
528	static void (alloc)(void *ptr, long size) = ev_realloc_emul;	590	static void (alloc)(void *ptr, long size) = ev_realloc_emul;
529		591
530	void	592	void
…		…
538	{	600	{
539	ptr = alloc (ptr, size);	601	ptr = alloc (ptr, size);
540		602
541	if (!ptr && size)	603	if (!ptr && size)
542	{	604	{
		605	#if EV_AVOID_STDIO
		606	ev_printerr ("libev: memory allocation failed, aborting.\n");
		607	#else
543	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	608	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		609	#endif
544	abort ();	610	abort ();
545	}	611	}
546		612
547	return ptr;	613	return ptr;
548	}	614	}
…		…
879		945
880	#if EV_SELECT_IS_WINSOCKET	946	#if EV_SELECT_IS_WINSOCKET
881	if (events)	947	if (events)
882	{	948	{
883	unsigned long arg;	949	unsigned long arg;
884	#ifdef EV_FD_TO_WIN32_HANDLE
885	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	950	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));	951	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
890	}	952	}
891	#endif	953	#endif
892		954
893	{	955	{
…		…
931	ev_io_stop (EV_A_ w);	993	ev_io_stop (EV_A_ w);
932	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	994	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
933	}	995	}
934	}	996	}
935		997
936	/* check whether the given fd is atcually valid, for error recovery */	998	/* check whether the given fd is actually valid, for error recovery */
937	inline_size int	999	inline_size int
938	fd_valid (int fd)	1000	fd_valid (int fd)
939	{	1001	{
940	#ifdef _WIN32	1002	#ifdef _WIN32
941	return _get_osfhandle (fd) != -1;	1003	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
942	#else	1004	#else
943	return fcntl (fd, F_GETFD) != -1;	1005	return fcntl (fd, F_GETFD) != -1;
944	#endif	1006	#endif
945	}	1007	}
946		1008
…		…
964		1026
965	for (fd = anfdmax; fd--; )	1027	for (fd = anfdmax; fd--; )
966	if (anfds [fd].events)	1028	if (anfds [fd].events)
967	{	1029	{
968	fd_kill (EV_A_ fd);	1030	fd_kill (EV_A_ fd);
969	return;	1031	break;
970	}	1032	}
971	}	1033	}
972		1034
973	/* usually called after fork if backend needs to re-arm all fds from scratch */	1035	/* usually called after fork if backend needs to re-arm all fds from scratch */
974	static void noinline	1036	static void noinline
…		…
981	{	1043	{
982	anfds [fd].events = 0;	1044	anfds [fd].events = 0;
983	anfds [fd].emask = 0;	1045	anfds [fd].emask = 0;
984	fd_change (EV_A_ fd, EV__IOFDSET \| EV_ANFD_REIFY);	1046	fd_change (EV_A_ fd, EV__IOFDSET \| EV_ANFD_REIFY);
985	}	1047	}
		1048	}
		1049
		1050	/* used to prepare libev internal fd's */
		1051	/* this is not fork-safe */
		1052	inline_speed void
		1053	fd_intern (int fd)
		1054	{
		1055	#ifdef _WIN32
		1056	unsigned long arg = 1;
		1057	ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
		1058	#else
		1059	fcntl (fd, F_SETFD, FD_CLOEXEC);
		1060	fcntl (fd, F_SETFL, O_NONBLOCK);
		1061	#endif
986	}	1062	}
987		1063
988	/*****************************************************************************/	1064	/*****************************************************************************/
989		1065
990	/*	1066	/*
…		…
1064		1140
1065	for (;;)	1141	for (;;)
1066	{	1142	{
1067	int c = k << 1;	1143	int c = k << 1;
1068		1144
1069	if (c > N + HEAP0 - 1)	1145	if (c >= N + HEAP0)
1070	break;	1146	break;
1071		1147
1072	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])	1148	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1073	? 1 : 0;	1149	? 1 : 0;
1074		1150
…		…
1110		1186
1111	/* move an element suitably so it is in a correct place */	1187	/* move an element suitably so it is in a correct place */
1112	inline_size void	1188	inline_size void
1113	adjustheap (ANHE *heap, int N, int k)	1189	adjustheap (ANHE *heap, int N, int k)
1114	{	1190	{
1115	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1191	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1116	upheap (heap, k);	1192	upheap (heap, k);
1117	else	1193	else
1118	downheap (heap, N, k);	1194	downheap (heap, N, k);
1119	}	1195	}
1120		1196
…		…
1133	/*****************************************************************************/	1209	/*****************************************************************************/
1134		1210
1135	/* associate signal watchers to a signal signal */	1211	/* associate signal watchers to a signal signal */
1136	typedef struct	1212	typedef struct
1137	{	1213	{
		1214	EV_ATOMIC_T pending;
		1215	#if EV_MULTIPLICITY
		1216	EV_P;
		1217	#endif
1138	WL head;	1218	WL head;
1139	EV_ATOMIC_T gotsig;
1140	} ANSIG;	1219	} ANSIG;
1141		1220
1142	static ANSIG *signals;	1221	static ANSIG signals [EV_NSIG - 1];
1143	static int signalmax;
1144
1145	static EV_ATOMIC_T gotsig;
1146		1222
1147	/*****************************************************************************/	1223	/*****************************************************************************/
1148		1224
1149	/* used to prepare libev internal fd's */	1225	#if EV_SIGNAL_ENABLE \|\| EV_ASYNC_ENABLE
1150	/* this is not fork-safe */
1151	inline_speed void
1152	fd_intern (int fd)
1153	{
1154	#ifdef _WIN32
1155	unsigned long arg = 1;
1156	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1157	#else
1158	fcntl (fd, F_SETFD, FD_CLOEXEC);
1159	fcntl (fd, F_SETFL, O_NONBLOCK);
1160	#endif
1161	}
1162		1226
1163	static void noinline	1227	static void noinline
1164	evpipe_init (EV_P)	1228	evpipe_init (EV_P)
1165	{	1229	{
1166	if (!ev_is_active (&pipe_w))	1230	if (!ev_is_active (&pipe_w))
1167	{	1231	{
1168	#if EV_USE_EVENTFD	1232	# if EV_USE_EVENTFD
1169	evfd = eventfd (0, EFD_NONBLOCK \| EFD_CLOEXEC);	1233	evfd = eventfd (0, EFD_NONBLOCK \| EFD_CLOEXEC);
1170	if (evfd < 0 && errno == EINVAL)	1234	if (evfd < 0 && errno == EINVAL)
1171	evfd = eventfd (0, 0);	1235	evfd = eventfd (0, 0);
1172		1236
1173	if (evfd >= 0)	1237	if (evfd >= 0)
…		…
1175	evpipe [0] = -1;	1239	evpipe [0] = -1;
1176	fd_intern (evfd); /* doing it twice doesn't hurt */	1240	fd_intern (evfd); /* doing it twice doesn't hurt */
1177	ev_io_set (&pipe_w, evfd, EV_READ);	1241	ev_io_set (&pipe_w, evfd, EV_READ);
1178	}	1242	}
1179	else	1243	else
1180	#endif	1244	# endif
1181	{	1245	{
1182	while (pipe (evpipe))	1246	while (pipe (evpipe))
1183	ev_syserr ("(libev) error creating signal/async pipe");	1247	ev_syserr ("(libev) error creating signal/async pipe");
1184		1248
1185	fd_intern (evpipe [0]);	1249	fd_intern (evpipe [0]);
…		…
1196	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1260	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1197	{	1261	{
1198	if (!*flag)	1262	if (!*flag)
1199	{	1263	{
1200	int old_errno = errno; /* save errno because write might clobber it */	1264	int old_errno = errno; /* save errno because write might clobber it */
		1265	char dummy;
1201		1266
1202	*flag = 1;	1267	*flag = 1;
1203		1268
1204	#if EV_USE_EVENTFD	1269	#if EV_USE_EVENTFD
1205	if (evfd >= 0)	1270	if (evfd >= 0)
…		…
1207	uint64_t counter = 1;	1272	uint64_t counter = 1;
1208	write (evfd, &counter, sizeof (uint64_t));	1273	write (evfd, &counter, sizeof (uint64_t));
1209	}	1274	}
1210	else	1275	else
1211	#endif	1276	#endif
1212	write (evpipe [1], &old_errno, 1);	1277	write (evpipe [1], &dummy, 1);
1213		1278
1214	errno = old_errno;	1279	errno = old_errno;
1215	}	1280	}
1216	}	1281	}
1217		1282
1218	/* called whenever the libev signal pipe */	1283	/* called whenever the libev signal pipe */
1219	/* got some events (signal, async) */	1284	/* got some events (signal, async) */
1220	static void	1285	static void
1221	pipecb (EV_P_ ev_io *iow, int revents)	1286	pipecb (EV_P_ ev_io *iow, int revents)
1222	{	1287	{
		1288	int i;
		1289
1223	#if EV_USE_EVENTFD	1290	#if EV_USE_EVENTFD
1224	if (evfd >= 0)	1291	if (evfd >= 0)
1225	{	1292	{
1226	uint64_t counter;	1293	uint64_t counter;
1227	read (evfd, &counter, sizeof (uint64_t));	1294	read (evfd, &counter, sizeof (uint64_t));
…		…
1231	{	1298	{
1232	char dummy;	1299	char dummy;
1233	read (evpipe [0], &dummy, 1);	1300	read (evpipe [0], &dummy, 1);
1234	}	1301	}
1235		1302
1236	if (gotsig && ev_is_default_loop (EV_A))	1303	if (sig_pending)
1237	{	1304	{
1238	int signum;	1305	sig_pending = 0;
1239	gotsig = 0;
1240		1306
1241	for (signum = signalmax; signum--; )	1307	for (i = EV_NSIG - 1; i--; )
1242	if (signals [signum].gotsig)	1308	if (expect_false (signals [i].pending))
1243	ev_feed_signal_event (EV_A_ signum + 1);	1309	ev_feed_signal_event (EV_A_ i + 1);
1244	}	1310	}
1245		1311
1246	#if EV_ASYNC_ENABLE	1312	#if EV_ASYNC_ENABLE
1247	if (gotasync)	1313	if (async_pending)
1248	{	1314	{
1249	int i;	1315	async_pending = 0;
1250	gotasync = 0;
1251		1316
1252	for (i = asynccnt; i--; )	1317	for (i = asynccnt; i--; )
1253	if (asyncs [i]->sent)	1318	if (asyncs [i]->sent)
1254	{	1319	{
1255	asyncs [i]->sent = 0;	1320	asyncs [i]->sent = 0;
…		…
1263		1328
1264	static void	1329	static void
1265	ev_sighandler (int signum)	1330	ev_sighandler (int signum)
1266	{	1331	{
1267	#if EV_MULTIPLICITY	1332	#if EV_MULTIPLICITY
1268	struct ev_loop *loop = &default_loop_struct;	1333	EV_P = signals [signum - 1].loop;
1269	#endif	1334	#endif
1270		1335
1271	#if _WIN32	1336	#ifdef _WIN32
1272	signal (signum, ev_sighandler);	1337	signal (signum, ev_sighandler);
1273	#endif	1338	#endif
1274		1339
1275	signals [signum - 1].gotsig = 1;	1340	signals [signum - 1].pending = 1;
1276	evpipe_write (EV_A_ &gotsig);	1341	evpipe_write (EV_A_ &sig_pending);
1277	}	1342	}
1278		1343
1279	void noinline	1344	void noinline
1280	ev_feed_signal_event (EV_P_ int signum)	1345	ev_feed_signal_event (EV_P_ int signum)
1281	{	1346	{
1282	WL w;	1347	WL w;
1283		1348
		1349	if (expect_false (signum <= 0 \|\| signum > EV_NSIG))
		1350	return;
		1351
		1352	--signum;
		1353
1284	#if EV_MULTIPLICITY	1354	#if EV_MULTIPLICITY
1285	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1355	/* it is permissible to try to feed a signal to the wrong loop */
1286	#endif	1356	/* or, likely more useful, feeding a signal nobody is waiting for */
1287		1357
1288	--signum;	1358	if (expect_false (signals [signum].loop != EV_A))
1289
1290	if (signum < 0 \|\| signum >= signalmax)
1291	return;	1359	return;
		1360	#endif
1292		1361
1293	signals [signum].gotsig = 0;	1362	signals [signum].pending = 0;
1294		1363
1295	for (w = signals [signum].head; w; w = w->next)	1364	for (w = signals [signum].head; w; w = w->next)
1296	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1365	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1297	}	1366	}
1298		1367
1299	#if EV_USE_SIGNALFD	1368	#if EV_USE_SIGNALFD
1300	static void	1369	static void
1301	sigfdcb (EV_P_ ev_io *iow, int revents)	1370	sigfdcb (EV_P_ ev_io *iow, int revents)
1302	{	1371	{
1303	struct signalfd_siginfo si[4], *sip;	1372	struct signalfd_siginfo si[2], sip; / these structs are big */
1304		1373
1305	for (;;)	1374	for (;;)
1306	{	1375	{
1307	ssize_t res = read (sigfd, si, sizeof (si));	1376	ssize_t res = read (sigfd, si, sizeof (si));
1308		1377
…		…
1314	break;	1383	break;
1315	}	1384	}
1316	}	1385	}
1317	#endif	1386	#endif
1318		1387
		1388	#endif
		1389
1319	/*****************************************************************************/	1390	/*****************************************************************************/
1320		1391
		1392	#if EV_CHILD_ENABLE
1321	static WL childs [EV_PID_HASHSIZE];	1393	static WL childs [EV_PID_HASHSIZE];
1322
1323	#ifndef _WIN32
1324		1394
1325	static ev_signal childev;	1395	static ev_signal childev;
1326		1396
1327	#ifndef WIFCONTINUED	1397	#ifndef WIFCONTINUED
1328	# define WIFCONTINUED(status) 0	1398	# define WIFCONTINUED(status) 0
…		…
1542	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1612	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1543	have_monotonic = 1;	1613	have_monotonic = 1;
1544	}	1614	}
1545	#endif	1615	#endif
1546		1616
		1617	/* pid check not overridable via env */
		1618	#ifndef _WIN32
		1619	if (flags & EVFLAG_FORKCHECK)
		1620	curpid = getpid ();
		1621	#endif
		1622
		1623	if (!(flags & EVFLAG_NOENV)
		1624	&& !enable_secure ()
		1625	&& getenv ("LIBEV_FLAGS"))
		1626	flags = atoi (getenv ("LIBEV_FLAGS"));
		1627
1547	ev_rt_now = ev_time ();	1628	ev_rt_now = ev_time ();
1548	mn_now = get_clock ();	1629	mn_now = get_clock ();
1549	now_floor = mn_now;	1630	now_floor = mn_now;
1550	rtmn_diff = ev_rt_now - mn_now;	1631	rtmn_diff = ev_rt_now - mn_now;
1551	#if EV_MINIMAL < 2	1632	#if EV_MINIMAL < 2
…		…
1554		1635
1555	io_blocktime = 0.;	1636	io_blocktime = 0.;
1556	timeout_blocktime = 0.;	1637	timeout_blocktime = 0.;
1557	backend = 0;	1638	backend = 0;
1558	backend_fd = -1;	1639	backend_fd = -1;
1559	gotasync = 0;	1640	sig_pending = 0;
		1641	#if EV_ASYNC_ENABLE
		1642	async_pending = 0;
		1643	#endif
1560	#if EV_USE_INOTIFY	1644	#if EV_USE_INOTIFY
1561	fs_fd = -2;	1645	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1562	#endif	1646	#endif
1563	#if EV_USE_SIGNALFD	1647	#if EV_USE_SIGNALFD
1564	sigfd = -2;	1648	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1565	#endif	1649	#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		1650
1578	if (!(flags & 0x0000ffffU))	1651	if (!(flags & 0x0000ffffU))
1579	flags \|= ev_recommended_backends ();	1652	flags \|= ev_recommended_backends ();
1580		1653
1581	#if EV_USE_PORT	1654	#if EV_USE_PORT
…		…
1594	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1667	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1595	#endif	1668	#endif
1596		1669
1597	ev_prepare_init (&pending_w, pendingcb);	1670	ev_prepare_init (&pending_w, pendingcb);
1598		1671
		1672	#if EV_SIGNAL_ENABLE \|\| EV_ASYNC_ENABLE
1599	ev_init (&pipe_w, pipecb);	1673	ev_init (&pipe_w, pipecb);
1600	ev_set_priority (&pipe_w, EV_MAXPRI);	1674	ev_set_priority (&pipe_w, EV_MAXPRI);
		1675	#endif
1601	}	1676	}
1602	}	1677	}
1603		1678
1604	/* free up a loop structure */	1679	/* free up a loop structure */
1605	static void noinline	1680	static void noinline
…		…
1617	close (evfd);	1692	close (evfd);
1618	#endif	1693	#endif
1619		1694
1620	if (evpipe [0] >= 0)	1695	if (evpipe [0] >= 0)
1621	{	1696	{
1622	close (evpipe [0]);	1697	EV_WIN32_CLOSE_FD (evpipe [0]);
1623	close (evpipe [1]);	1698	EV_WIN32_CLOSE_FD (evpipe [1]);
1624	}	1699	}
1625	}	1700	}
1626		1701
1627	#if EV_USE_SIGNALFD	1702	#if EV_USE_SIGNALFD
1628	if (ev_is_active (&sigfd_w))	1703	if (ev_is_active (&sigfd_w))
1629	{
1630	/ev_ref (EV_A);/
1631	/ev_io_stop (EV_A_ &sigfd_w);/
1632
1633	close (sigfd);	1704	close (sigfd);
1634	}
1635	#endif	1705	#endif
1636		1706
1637	#if EV_USE_INOTIFY	1707	#if EV_USE_INOTIFY
1638	if (fs_fd >= 0)	1708	if (fs_fd >= 0)
1639	close (fs_fd);	1709	close (fs_fd);
…		…
1709		1779
1710	if (ev_is_active (&pipe_w))	1780	if (ev_is_active (&pipe_w))
1711	{	1781	{
1712	/* this "locks" the handlers against writing to the pipe */	1782	/* this "locks" the handlers against writing to the pipe */
1713	/* while we modify the fd vars */	1783	/* while we modify the fd vars */
1714	gotsig = 1;	1784	sig_pending = 1;
1715	#if EV_ASYNC_ENABLE	1785	#if EV_ASYNC_ENABLE
1716	gotasync = 1;	1786	async_pending = 1;
1717	#endif	1787	#endif
1718		1788
1719	ev_ref (EV_A);	1789	ev_ref (EV_A);
1720	ev_io_stop (EV_A_ &pipe_w);	1790	ev_io_stop (EV_A_ &pipe_w);
1721		1791
…		…
1724	close (evfd);	1794	close (evfd);
1725	#endif	1795	#endif
1726		1796
1727	if (evpipe [0] >= 0)	1797	if (evpipe [0] >= 0)
1728	{	1798	{
1729	close (evpipe [0]);	1799	EV_WIN32_CLOSE_FD (evpipe [0]);
1730	close (evpipe [1]);	1800	EV_WIN32_CLOSE_FD (evpipe [1]);
1731	}	1801	}
1732		1802
1733	evpipe_init (EV_A);	1803	evpipe_init (EV_A);
1734	/* now iterate over everything, in case we missed something */	1804	/* now iterate over everything, in case we missed something */
1735	pipecb (EV_A_ &pipe_w, EV_READ);	1805	pipecb (EV_A_ &pipe_w, EV_READ);
…		…
1741	#if EV_MULTIPLICITY	1811	#if EV_MULTIPLICITY
1742		1812
1743	struct ev_loop *	1813	struct ev_loop *
1744	ev_loop_new (unsigned int flags)	1814	ev_loop_new (unsigned int flags)
1745	{	1815	{
1746	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));	1816	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1747		1817
1748	memset (loop, 0, sizeof (struct ev_loop));	1818	memset (EV_A, 0, sizeof (struct ev_loop));
1749	loop_init (EV_A_ flags);	1819	loop_init (EV_A_ flags);
1750		1820
1751	if (ev_backend (EV_A))	1821	if (ev_backend (EV_A))
1752	return loop;	1822	return EV_A;
1753		1823
1754	return 0;	1824	return 0;
1755	}	1825	}
1756		1826
1757	void	1827	void
…		…
1860		1930
1861	assert (checkmax >= checkcnt);	1931	assert (checkmax >= checkcnt);
1862	array_verify (EV_A_ (W *)checks, checkcnt);	1932	array_verify (EV_A_ (W *)checks, checkcnt);
1863		1933
1864	# if 0	1934	# if 0
		1935	#if EV_CHILD_ENABLE
1865	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	1936	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)	1937	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
		1938	#endif
1867	# endif	1939	# endif
1868	#endif	1940	#endif
1869	}	1941	}
1870	#endif	1942	#endif
1871		1943
…		…
1878	#endif	1950	#endif
1879	{	1951	{
1880	if (!ev_default_loop_ptr)	1952	if (!ev_default_loop_ptr)
1881	{	1953	{
1882	#if EV_MULTIPLICITY	1954	#if EV_MULTIPLICITY
1883	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1955	EV_P = ev_default_loop_ptr = &default_loop_struct;
1884	#else	1956	#else
1885	ev_default_loop_ptr = 1;	1957	ev_default_loop_ptr = 1;
1886	#endif	1958	#endif
1887		1959
1888	loop_init (EV_A_ flags);	1960	loop_init (EV_A_ flags);
1889		1961
1890	if (ev_backend (EV_A))	1962	if (ev_backend (EV_A))
1891	{	1963	{
1892	#ifndef _WIN32	1964	#if EV_CHILD_ENABLE
1893	ev_signal_init (&childev, childcb, SIGCHLD);	1965	ev_signal_init (&childev, childcb, SIGCHLD);
1894	ev_set_priority (&childev, EV_MAXPRI);	1966	ev_set_priority (&childev, EV_MAXPRI);
1895	ev_signal_start (EV_A_ &childev);	1967	ev_signal_start (EV_A_ &childev);
1896	ev_unref (EV_A); /* child watcher should not keep loop alive */	1968	ev_unref (EV_A); /* child watcher should not keep loop alive */
1897	#endif	1969	#endif
…		…
1905		1977
1906	void	1978	void
1907	ev_default_destroy (void)	1979	ev_default_destroy (void)
1908	{	1980	{
1909	#if EV_MULTIPLICITY	1981	#if EV_MULTIPLICITY
1910	struct ev_loop *loop = ev_default_loop_ptr;	1982	EV_P = ev_default_loop_ptr;
1911	#endif	1983	#endif
1912		1984
1913	ev_default_loop_ptr = 0;	1985	ev_default_loop_ptr = 0;
1914		1986
1915	#ifndef _WIN32	1987	#if EV_CHILD_ENABLE
1916	ev_ref (EV_A); /* child watcher */	1988	ev_ref (EV_A); /* child watcher */
1917	ev_signal_stop (EV_A_ &childev);	1989	ev_signal_stop (EV_A_ &childev);
1918	#endif	1990	#endif
1919		1991
1920	loop_destroy (EV_A);	1992	loop_destroy (EV_A);
…		…
1922		1994
1923	void	1995	void
1924	ev_default_fork (void)	1996	ev_default_fork (void)
1925	{	1997	{
1926	#if EV_MULTIPLICITY	1998	#if EV_MULTIPLICITY
1927	struct ev_loop *loop = ev_default_loop_ptr;	1999	EV_P = ev_default_loop_ptr;
1928	#endif	2000	#endif
1929		2001
1930	postfork = 1; /* must be in line with ev_loop_fork */	2002	postfork = 1; /* must be in line with ev_loop_fork */
1931	}	2003	}
1932		2004
…		…
2127	ANHE_at_cache (*he);	2199	ANHE_at_cache (*he);
2128	}	2200	}
2129	}	2201	}
2130		2202
2131	/* fetch new monotonic and realtime times from the kernel */	2203	/* fetch new monotonic and realtime times from the kernel */
2132	/* also detetc if there was a timejump, and act accordingly */	2204	/* also detect if there was a timejump, and act accordingly */
2133	inline_speed void	2205	inline_speed void
2134	time_update (EV_P_ ev_tstamp max_block)	2206	time_update (EV_P_ ev_tstamp max_block)
2135	{	2207	{
2136	#if EV_USE_MONOTONIC	2208	#if EV_USE_MONOTONIC
2137	if (expect_true (have_monotonic))	2209	if (expect_true (have_monotonic))
…		…
2398	inline_size void	2470	inline_size void
2399	wlist_del (WL *head, WL elem)	2471	wlist_del (WL *head, WL elem)
2400	{	2472	{
2401	while (*head)	2473	while (*head)
2402	{	2474	{
2403	if (*head == elem)	2475	if (expect_true (*head == elem))
2404	{	2476	{
2405	*head = elem->next;	2477	*head = elem->next;
2406	return;	2478	break;
2407	}	2479	}
2408		2480
2409	head = &(*head)->next;	2481	head = &(*head)->next;
2410	}	2482	}
2411	}	2483	}
…		…
2471		2543
2472	if (expect_false (ev_is_active (w)))	2544	if (expect_false (ev_is_active (w)))
2473	return;	2545	return;
2474		2546
2475	assert (("libev: ev_io_start called with negative fd", fd >= 0));	2547	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))));	2548	assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET \| EV_READ \| EV_WRITE))));
2477		2549
2478	EV_FREQUENT_CHECK;	2550	EV_FREQUENT_CHECK;
2479		2551
2480	ev_start (EV_A_ (W)w, 1);	2552	ev_start (EV_A_ (W)w, 1);
2481	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2553	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
…		…
2551	timers [active] = timers [timercnt + HEAP0];	2623	timers [active] = timers [timercnt + HEAP0];
2552	adjustheap (timers, timercnt, active);	2624	adjustheap (timers, timercnt, active);
2553	}	2625	}
2554	}	2626	}
2555		2627
2556	EV_FREQUENT_CHECK;
2557
2558	ev_at (w) -= mn_now;	2628	ev_at (w) -= mn_now;
2559		2629
2560	ev_stop (EV_A_ (W)w);	2630	ev_stop (EV_A_ (W)w);
		2631
		2632	EV_FREQUENT_CHECK;
2561	}	2633	}
2562		2634
2563	void noinline	2635	void noinline
2564	ev_timer_again (EV_P_ ev_timer *w)	2636	ev_timer_again (EV_P_ ev_timer *w)
2565	{	2637	{
…		…
2644	periodics [active] = periodics [periodiccnt + HEAP0];	2716	periodics [active] = periodics [periodiccnt + HEAP0];
2645	adjustheap (periodics, periodiccnt, active);	2717	adjustheap (periodics, periodiccnt, active);
2646	}	2718	}
2647	}	2719	}
2648		2720
2649	EV_FREQUENT_CHECK;
2650
2651	ev_stop (EV_A_ (W)w);	2721	ev_stop (EV_A_ (W)w);
		2722
		2723	EV_FREQUENT_CHECK;
2652	}	2724	}
2653		2725
2654	void noinline	2726	void noinline
2655	ev_periodic_again (EV_P_ ev_periodic *w)	2727	ev_periodic_again (EV_P_ ev_periodic *w)
2656	{	2728	{
…		…
2662		2734
2663	#ifndef SA_RESTART	2735	#ifndef SA_RESTART
2664	# define SA_RESTART 0	2736	# define SA_RESTART 0
2665	#endif	2737	#endif
2666		2738
		2739	#if EV_SIGNAL_ENABLE
		2740
2667	void noinline	2741	void noinline
2668	ev_signal_start (EV_P_ ev_signal *w)	2742	ev_signal_start (EV_P_ ev_signal *w)
2669	{	2743	{
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)))	2744	if (expect_false (ev_is_active (w)))
2674	return;	2745	return;
2675		2746
2676	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));	2747	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
		2748
		2749	#if EV_MULTIPLICITY
		2750	assert (("libev: a signal must not be attached to two different loops",
		2751	!signals [w->signum - 1].loop \|\| signals [w->signum - 1].loop == loop));
		2752
		2753	signals [w->signum - 1].loop = EV_A;
		2754	#endif
2677		2755
2678	EV_FREQUENT_CHECK;	2756	EV_FREQUENT_CHECK;
2679		2757
2680	#if EV_USE_SIGNALFD	2758	#if EV_USE_SIGNALFD
2681	if (sigfd == -2)	2759	if (sigfd == -2)
…		…
2703	sigaddset (&sigfd_set, w->signum);	2781	sigaddset (&sigfd_set, w->signum);
2704	sigprocmask (SIG_BLOCK, &sigfd_set, 0);	2782	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2705		2783
2706	signalfd (sigfd, &sigfd_set, 0);	2784	signalfd (sigfd, &sigfd_set, 0);
2707	}	2785	}
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	2786	#endif
2725	sigdelset (&prev, w->signum);
2726	sigprocmask (SIG_SETMASK, &prev, 0);
2727	#endif
2728	}
2729		2787
2730	ev_start (EV_A_ (W)w, 1);	2788	ev_start (EV_A_ (W)w, 1);
2731	wlist_add (&signals [w->signum - 1].head, (WL)w);	2789	wlist_add (&signals [w->signum - 1].head, (WL)w);
2732		2790
2733	if (!((WL)w)->next)	2791	if (!((WL)w)->next)
2734	{
2735	#if _WIN32
2736	signal (w->signum, ev_sighandler);
2737	#else
2738	# if EV_USE_SIGNALFD	2792	# if EV_USE_SIGNALFD
2739	if (sigfd < 0) /TODO/	2793	if (sigfd < 0) /TODO/
2740	# endif	2794	# endif
2741	{	2795	{
		2796	# ifdef _WIN32
		2797	evpipe_init (EV_A);
		2798
		2799	signal (w->signum, ev_sighandler);
		2800	# else
2742	struct sigaction sa = { };	2801	struct sigaction sa;
		2802
		2803	evpipe_init (EV_A);
		2804
2743	sa.sa_handler = ev_sighandler;	2805	sa.sa_handler = ev_sighandler;
2744	sigfillset (&sa.sa_mask);	2806	sigfillset (&sa.sa_mask);
2745	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2807	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2746	sigaction (w->signum, &sa, 0);	2808	sigaction (w->signum, &sa, 0);
		2809
		2810	sigemptyset (&sa.sa_mask);
		2811	sigaddset (&sa.sa_mask, w->signum);
		2812	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
		2813	#endif
2747	}	2814	}
2748	#endif
2749	}
2750		2815
2751	EV_FREQUENT_CHECK;	2816	EV_FREQUENT_CHECK;
2752	}	2817	}
2753		2818
2754	void noinline	2819	void noinline
…		…
2762		2827
2763	wlist_del (&signals [w->signum - 1].head, (WL)w);	2828	wlist_del (&signals [w->signum - 1].head, (WL)w);
2764	ev_stop (EV_A_ (W)w);	2829	ev_stop (EV_A_ (W)w);
2765		2830
2766	if (!signals [w->signum - 1].head)	2831	if (!signals [w->signum - 1].head)
		2832	{
		2833	#if EV_MULTIPLICITY
		2834	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2835	#endif
2767	#if EV_USE_SIGNALFD	2836	#if EV_USE_SIGNALFD
2768	if (sigfd >= 0)	2837	if (sigfd >= 0)
2769	{	2838	{
2770	sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D	2839	sigset_t ss;
		2840
		2841	sigemptyset (&ss);
		2842	sigaddset (&ss, w->signum);
2771	sigdelset (&sigfd_set, w->signum);	2843	sigdelset (&sigfd_set, w->signum);
		2844
2772	signalfd (sigfd, &sigfd_set, 0);	2845	signalfd (sigfd, &sigfd_set, 0);
2773	sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D	2846	sigprocmask (SIG_UNBLOCK, &ss, 0);
2774	/TODO: maybe unblock signal? /
2775	}	2847	}
2776	else	2848	else
2777	#endif	2849	#endif
2778	signal (w->signum, SIG_DFL);	2850	signal (w->signum, SIG_DFL);
		2851	}
2779		2852
2780	EV_FREQUENT_CHECK;	2853	EV_FREQUENT_CHECK;
2781	}	2854	}
		2855
		2856	#endif
		2857
		2858	#if EV_CHILD_ENABLE
2782		2859
2783	void	2860	void
2784	ev_child_start (EV_P_ ev_child *w)	2861	ev_child_start (EV_P_ ev_child *w)
2785	{	2862	{
2786	#if EV_MULTIPLICITY	2863	#if EV_MULTIPLICITY
…		…
2810	ev_stop (EV_A_ (W)w);	2887	ev_stop (EV_A_ (W)w);
2811		2888
2812	EV_FREQUENT_CHECK;	2889	EV_FREQUENT_CHECK;
2813	}	2890	}
2814		2891
		2892	#endif
		2893
2815	#if EV_STAT_ENABLE	2894	#if EV_STAT_ENABLE
2816		2895
2817	# ifdef _WIN32	2896	# ifdef _WIN32
2818	# undef lstat	2897	# undef lstat
2819	# define lstat(a,b) _stati64 (a,b)	2898	# define lstat(a,b) _stati64 (a,b)
…		…
2824	#define MIN_STAT_INTERVAL 0.1074891	2903	#define MIN_STAT_INTERVAL 0.1074891
2825		2904
2826	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2905	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2827		2906
2828	#if EV_USE_INOTIFY	2907	#if EV_USE_INOTIFY
2829	# define EV_INOTIFY_BUFSIZE 8192	2908
		2909	/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
		2910	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2830		2911
2831	static void noinline	2912	static void noinline
2832	infy_add (EV_P_ ev_stat *w)	2913	infy_add (EV_P_ ev_stat *w)
2833	{	2914	{
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);	2915	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		2916
2836	if (w->wd < 0)	2917	if (w->wd >= 0)
		2918	{
		2919	struct statfs sfs;
		2920
		2921	/* now local changes will be tracked by inotify, but remote changes won't */
		2922	/* unless the filesystem is known to be local, we therefore still poll */
		2923	/* also do poll on <2.6.25, but with normal frequency */
		2924
		2925	if (!fs_2625)
		2926	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		2927	else if (!statfs (w->path, &sfs)
		2928	&& (sfs.f_type == 0x1373 /* devfs */
		2929	\|\| sfs.f_type == 0xEF53 /* ext2/3 */
		2930	\|\| sfs.f_type == 0x3153464a /* jfs */
		2931	\|\| sfs.f_type == 0x52654973 /* reiser3 */
		2932	\|\| sfs.f_type == 0x01021994 /* tempfs */
		2933	\|\| sfs.f_type == 0x58465342 /* xfs */))
		2934	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
		2935	else
		2936	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2837	{	2937	}
		2938	else
		2939	{
		2940	/* can't use inotify, continue to stat */
2838	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;	2941	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		2942
2841	/* monitor some parent directory for speedup hints */	2943	/* 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, */	2944	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2843	/* but an efficiency issue only */	2945	/* but an efficiency issue only */
2844	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)	2946	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)
2845	{	2947	{
2846	char path [4096];	2948	char path [4096];
…		…
2862	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));	2964	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));
2863	}	2965	}
2864	}	2966	}
2865		2967
2866	if (w->wd >= 0)	2968	if (w->wd >= 0)
2867	{
2868	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2969	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2869		2970
2870	/* now local changes will be tracked by inotify, but remote changes won't */	2971	/* now re-arm timer, if required */
2871	/* unless the filesystem it known to be local, we therefore still poll */	2972	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);	2973	ev_timer_again (EV_A_ &w->timer);
2886	}	2974	if (ev_is_active (&w->timer)) ev_unref (EV_A);
2887	}	2975	}
2888		2976
2889	static void noinline	2977	static void noinline
2890	infy_del (EV_P_ ev_stat *w)	2978	infy_del (EV_P_ ev_stat *w)
2891	{	2979	{
…		…
2936		3024
2937	static void	3025	static void
2938	infy_cb (EV_P_ ev_io *w, int revents)	3026	infy_cb (EV_P_ ev_io *w, int revents)
2939	{	3027	{
2940	char buf [EV_INOTIFY_BUFSIZE];	3028	char buf [EV_INOTIFY_BUFSIZE];
2941	struct inotify_event ev = (struct inotify_event )buf;
2942	int ofs;	3029	int ofs;
2943	int len = read (fs_fd, buf, sizeof (buf));	3030	int len = read (fs_fd, buf, sizeof (buf));
2944		3031
2945	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	3032	for (ofs = 0; ofs < len; )
		3033	{
		3034	struct inotify_event ev = (struct inotify_event )(buf + ofs);
2946	infy_wd (EV_A_ ev->wd, ev->wd, ev);	3035	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		3036	ofs += sizeof (struct inotify_event) + ev->len;
		3037	}
		3038	}
		3039
		3040	inline_size unsigned int
		3041	ev_linux_version (void)
		3042	{
		3043	struct utsname buf;
		3044	unsigned int v;
		3045	int i;
		3046	char *p = buf.release;
		3047
		3048	if (uname (&buf))
		3049	return 0;
		3050
		3051	for (i = 3+1; --i; )
		3052	{
		3053	unsigned int c = 0;
		3054
		3055	for (;;)
		3056	{
		3057	if (p >= '0' && p <= '9')
		3058	c = c * 10 + *p++ - '0';
		3059	else
		3060	{
		3061	p += *p == '.';
		3062	break;
		3063	}
		3064	}
		3065
		3066	v = (v << 8) \| c;
		3067	}
		3068
		3069	return v;
2947	}	3070	}
2948		3071
2949	inline_size void	3072	inline_size void
2950	check_2625 (EV_P)	3073	ev_check_2625 (EV_P)
2951	{	3074	{
2952	/* kernels < 2.6.25 are borked	3075	/* kernels < 2.6.25 are borked
2953	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html	3076	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2954	*/	3077	*/
2955	struct utsname buf;	3078	if (ev_linux_version () < 0x020619)
2956	int major, minor, micro;
2957
2958	if (uname (&buf))
2959	return;	3079	return;
2960		3080
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;	3081	fs_2625 = 1;
		3082	}
		3083
		3084	inline_size int
		3085	infy_newfd (void)
		3086	{
		3087	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3088	int fd = inotify_init1 (IN_CLOEXEC \| IN_NONBLOCK);
		3089	if (fd >= 0)
		3090	return fd;
		3091	#endif
		3092	return inotify_init ();
2970	}	3093	}
2971		3094
2972	inline_size void	3095	inline_size void
2973	infy_init (EV_P)	3096	infy_init (EV_P)
2974	{	3097	{
2975	if (fs_fd != -2)	3098	if (fs_fd != -2)
2976	return;	3099	return;
2977		3100
2978	fs_fd = -1;	3101	fs_fd = -1;
2979		3102
2980	check_2625 (EV_A);	3103	ev_check_2625 (EV_A);
2981		3104
2982	fs_fd = inotify_init ();	3105	fs_fd = infy_newfd ();
2983		3106
2984	if (fs_fd >= 0)	3107	if (fs_fd >= 0)
2985	{	3108	{
		3109	fd_intern (fs_fd);
2986	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3110	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2987	ev_set_priority (&fs_w, EV_MAXPRI);	3111	ev_set_priority (&fs_w, EV_MAXPRI);
2988	ev_io_start (EV_A_ &fs_w);	3112	ev_io_start (EV_A_ &fs_w);
		3113	ev_unref (EV_A);
2989	}	3114	}
2990	}	3115	}
2991		3116
2992	inline_size void	3117	inline_size void
2993	infy_fork (EV_P)	3118	infy_fork (EV_P)
…		…
2995	int slot;	3120	int slot;
2996		3121
2997	if (fs_fd < 0)	3122	if (fs_fd < 0)
2998	return;	3123	return;
2999		3124
		3125	ev_ref (EV_A);
		3126	ev_io_stop (EV_A_ &fs_w);
3000	close (fs_fd);	3127	close (fs_fd);
3001	fs_fd = inotify_init ();	3128	fs_fd = infy_newfd ();
		3129
		3130	if (fs_fd >= 0)
		3131	{
		3132	fd_intern (fs_fd);
		3133	ev_io_set (&fs_w, fs_fd, EV_READ);
		3134	ev_io_start (EV_A_ &fs_w);
		3135	ev_unref (EV_A);
		3136	}
3002		3137
3003	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3138	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
3004	{	3139	{
3005	WL w_ = fs_hash [slot].head;	3140	WL w_ = fs_hash [slot].head;
3006	fs_hash [slot].head = 0;	3141	fs_hash [slot].head = 0;
…		…
3013	w->wd = -1;	3148	w->wd = -1;
3014		3149
3015	if (fs_fd >= 0)	3150	if (fs_fd >= 0)
3016	infy_add (EV_A_ w); /* re-add, no matter what */	3151	infy_add (EV_A_ w); /* re-add, no matter what */
3017	else	3152	else
		3153	{
		3154	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3155	if (ev_is_active (&w->timer)) ev_ref (EV_A);
3018	ev_timer_again (EV_A_ &w->timer);	3156	ev_timer_again (EV_A_ &w->timer);
		3157	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		3158	}
3019	}	3159	}
3020	}	3160	}
3021	}	3161	}
3022		3162
3023	#endif	3163	#endif
…		…
3040	static void noinline	3180	static void noinline
3041	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	3181	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3042	{	3182	{
3043	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));	3183	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
3044		3184
3045	/* we copy this here each the time so that */	3185	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);	3186	ev_stat_stat (EV_A_ w);
3049		3187
3050	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */	3188	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3051	if (	3189	if (
3052	w->prev.st_dev != w->attr.st_dev	3190	prev.st_dev != w->attr.st_dev
3053	\|\| w->prev.st_ino != w->attr.st_ino	3191	\|\| prev.st_ino != w->attr.st_ino
3054	\|\| w->prev.st_mode != w->attr.st_mode	3192	\|\| prev.st_mode != w->attr.st_mode
3055	\|\| w->prev.st_nlink != w->attr.st_nlink	3193	\|\| prev.st_nlink != w->attr.st_nlink
3056	\|\| w->prev.st_uid != w->attr.st_uid	3194	\|\| prev.st_uid != w->attr.st_uid
3057	\|\| w->prev.st_gid != w->attr.st_gid	3195	\|\| prev.st_gid != w->attr.st_gid
3058	\|\| w->prev.st_rdev != w->attr.st_rdev	3196	\|\| prev.st_rdev != w->attr.st_rdev
3059	\|\| w->prev.st_size != w->attr.st_size	3197	\|\| prev.st_size != w->attr.st_size
3060	\|\| w->prev.st_atime != w->attr.st_atime	3198	\|\| prev.st_atime != w->attr.st_atime
3061	\|\| w->prev.st_mtime != w->attr.st_mtime	3199	\|\| prev.st_mtime != w->attr.st_mtime
3062	\|\| w->prev.st_ctime != w->attr.st_ctime	3200	\|\| prev.st_ctime != w->attr.st_ctime
3063	) {	3201	) {
		3202	/* we only update w->prev on actual differences */
		3203	/* in case we test more often than invoke the callback, */
		3204	/* to ensure that prev is always different to attr */
		3205	w->prev = prev;
		3206
3064	#if EV_USE_INOTIFY	3207	#if EV_USE_INOTIFY
3065	if (fs_fd >= 0)	3208	if (fs_fd >= 0)
3066	{	3209	{
3067	infy_del (EV_A_ w);	3210	infy_del (EV_A_ w);
3068	infy_add (EV_A_ w);	3211	infy_add (EV_A_ w);
…		…
3093		3236
3094	if (fs_fd >= 0)	3237	if (fs_fd >= 0)
3095	infy_add (EV_A_ w);	3238	infy_add (EV_A_ w);
3096	else	3239	else
3097	#endif	3240	#endif
		3241	{
3098	ev_timer_again (EV_A_ &w->timer);	3242	ev_timer_again (EV_A_ &w->timer);
		3243	ev_unref (EV_A);
		3244	}
3099		3245
3100	ev_start (EV_A_ (W)w, 1);	3246	ev_start (EV_A_ (W)w, 1);
3101		3247
3102	EV_FREQUENT_CHECK;	3248	EV_FREQUENT_CHECK;
3103	}	3249	}
…		…
3112	EV_FREQUENT_CHECK;	3258	EV_FREQUENT_CHECK;
3113		3259
3114	#if EV_USE_INOTIFY	3260	#if EV_USE_INOTIFY
3115	infy_del (EV_A_ w);	3261	infy_del (EV_A_ w);
3116	#endif	3262	#endif
		3263
		3264	if (ev_is_active (&w->timer))
		3265	{
		3266	ev_ref (EV_A);
3117	ev_timer_stop (EV_A_ &w->timer);	3267	ev_timer_stop (EV_A_ &w->timer);
		3268	}
3118		3269
3119	ev_stop (EV_A_ (W)w);	3270	ev_stop (EV_A_ (W)w);
3120		3271
3121	EV_FREQUENT_CHECK;	3272	EV_FREQUENT_CHECK;
3122	}	3273	}
…		…
3263	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3414	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3264	{	3415	{
3265	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));	3416	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
3266		3417
3267	{	3418	{
3268	struct ev_loop *loop = w->other;	3419	EV_P = w->other;
3269		3420
3270	while (fdchangecnt)	3421	while (fdchangecnt)
3271	{	3422	{
3272	fd_reify (EV_A);	3423	fd_reify (EV_A);
3273	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3424	ev_loop (EV_A_ EVLOOP_NONBLOCK);
…		…
3281	ev_embed w = (ev_embed )(((char *)fork_w) - offsetof (ev_embed, fork));	3432	ev_embed w = (ev_embed )(((char *)fork_w) - offsetof (ev_embed, fork));
3282		3433
3283	ev_embed_stop (EV_A_ w);	3434	ev_embed_stop (EV_A_ w);
3284		3435
3285	{	3436	{
3286	struct ev_loop *loop = w->other;	3437	EV_P = w->other;
3287		3438
3288	ev_loop_fork (EV_A);	3439	ev_loop_fork (EV_A);
3289	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3440	ev_loop (EV_A_ EVLOOP_NONBLOCK);
3290	}	3441	}
3291		3442
…		…
3305	{	3456	{
3306	if (expect_false (ev_is_active (w)))	3457	if (expect_false (ev_is_active (w)))
3307	return;	3458	return;
3308		3459
3309	{	3460	{
3310	struct ev_loop *loop = w->other;	3461	EV_P = w->other;
3311	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3462	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);	3463	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3313	}	3464	}
3314		3465
3315	EV_FREQUENT_CHECK;	3466	EV_FREQUENT_CHECK;
…		…
3342		3493
3343	ev_io_stop (EV_A_ &w->io);	3494	ev_io_stop (EV_A_ &w->io);
3344	ev_prepare_stop (EV_A_ &w->prepare);	3495	ev_prepare_stop (EV_A_ &w->prepare);
3345	ev_fork_stop (EV_A_ &w->fork);	3496	ev_fork_stop (EV_A_ &w->fork);
3346		3497
		3498	ev_stop (EV_A_ (W)w);
		3499
3347	EV_FREQUENT_CHECK;	3500	EV_FREQUENT_CHECK;
3348	}	3501	}
3349	#endif	3502	#endif
3350		3503
3351	#if EV_FORK_ENABLE	3504	#if EV_FORK_ENABLE
…		…
3427		3580
3428	void	3581	void
3429	ev_async_send (EV_P_ ev_async *w)	3582	ev_async_send (EV_P_ ev_async *w)
3430	{	3583	{
3431	w->sent = 1;	3584	w->sent = 1;
3432	evpipe_write (EV_A_ &gotasync);	3585	evpipe_write (EV_A_ &async_pending);
3433	}	3586	}
3434	#endif	3587	#endif
3435		3588
3436	/*****************************************************************************/	3589	/*****************************************************************************/
3437		3590
…		…
3586	if (types & EV_CHECK)	3739	if (types & EV_CHECK)
3587	for (i = checkcnt; i--; )	3740	for (i = checkcnt; i--; )
3588	cb (EV_A_ EV_CHECK, checks [i]);	3741	cb (EV_A_ EV_CHECK, checks [i]);
3589		3742
3590	if (types & EV_SIGNAL)	3743	if (types & EV_SIGNAL)
3591	for (i = 0; i < signalmax; ++i)	3744	for (i = 0; i < EV_NSIG - 1; ++i)
3592	for (wl = signals [i].head; wl; )	3745	for (wl = signals [i].head; wl; )
3593	{	3746	{
3594	wn = wl->next;	3747	wn = wl->next;
3595	cb (EV_A_ EV_SIGNAL, wl);	3748	cb (EV_A_ EV_SIGNAL, wl);
3596	wl = wn;	3749	wl = wn;

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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 1.336 by root, Wed Mar 10 08:19:38 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 1.336 by root, Wed Mar 10 08:19:38 2010 UTC