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

Comparing libev/ev.c (file contents):
Revision 1.304 by root, Sun Jul 19 03:12:28 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 */
		193
		194	/* try to deduce the maximum number of signals on this platform */
		195	#if defined (EV_NSIG)
		196	/* use what's provided */
		197	#elif defined (NSIG)
		198	# define EV_NSIG (NSIG)
		199	#elif defined(_NSIG)
		200	# define EV_NSIG (_NSIG)
		201	#elif defined (SIGMAX)
		202	# define EV_NSIG (SIGMAX+1)
		203	#elif defined (SIG_MAX)
		204	# define EV_NSIG (SIG_MAX+1)
		205	#elif defined (_SIG_MAX)
		206	# define EV_NSIG (_SIG_MAX+1)
		207	#elif defined (MAXSIG)
		208	# define EV_NSIG (MAXSIG+1)
		209	#elif defined (MAX_SIG)
		210	# define EV_NSIG (MAX_SIG+1)
		211	#elif defined (SIGARRAYSIZE)
		212	# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
		213	#elif defined (_sys_nsig)
		214	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
		215	#else
		216	# error "unable to find value for NSIG, please report"
		217	/* to make it compile regardless, just remove the above line, */
		218	/* but consider reporting it, too! :) */
		219	# define EV_NSIG 65
		220	#endif
190		221
191	#ifndef EV_USE_CLOCK_SYSCALL	222	#ifndef EV_USE_CLOCK_SYSCALL
192	# if __linux && __GLIBC__ >= 2	223	# if __linux && __GLIBC__ >= 2
193	# define EV_USE_CLOCK_SYSCALL 1	224	# define EV_USE_CLOCK_SYSCALL 1
194	# else	225	# else
…		…
275	# define EV_USE_EVENTFD 0	306	# define EV_USE_EVENTFD 0
276	# endif	307	# endif
277	#endif	308	#endif
278		309
279	#ifndef EV_USE_SIGNALFD	310	#ifndef EV_USE_SIGNALFD
280	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9))	311	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
281	# define EV_USE_SIGNALFD 1	312	# define EV_USE_SIGNALFD 1
282	# else	313	# else
283	# define EV_USE_SIGNALFD 0	314	# define EV_USE_SIGNALFD 0
284	# endif	315	# endif
285	#endif	316	#endif
…		…
316	# endif	347	# endif
317	#endif	348	#endif
318		349
319	/* 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 */
320		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
321	#ifndef CLOCK_MONOTONIC	358	#ifndef CLOCK_MONOTONIC
322	# undef EV_USE_MONOTONIC	359	# undef EV_USE_MONOTONIC
323	# define EV_USE_MONOTONIC 0	360	# define EV_USE_MONOTONIC 0
324	#endif	361	#endif
325		362
…		…
359	# include <stdint.h>	396	# include <stdint.h>
360	# ifndef EFD_NONBLOCK	397	# ifndef EFD_NONBLOCK
361	# define EFD_NONBLOCK O_NONBLOCK	398	# define EFD_NONBLOCK O_NONBLOCK
362	# endif	399	# endif
363	# ifndef EFD_CLOEXEC	400	# ifndef EFD_CLOEXEC
		401	# ifdef O_CLOEXEC
364	# define EFD_CLOEXEC O_CLOEXEC	402	# define EFD_CLOEXEC O_CLOEXEC
		403	# else
		404	# define EFD_CLOEXEC 02000000
		405	# endif
365	# endif	406	# endif
366	# ifdef __cplusplus	407	# ifdef __cplusplus
367	extern "C" {	408	extern "C" {
368	# endif	409	# endif
369	int eventfd (unsigned int initval, int flags);	410	int (eventfd) (unsigned int initval, int flags);
370	# ifdef __cplusplus	411	# ifdef __cplusplus
371	}	412	}
372	# endif	413	# endif
373	#endif	414	#endif
374		415
375	#if EV_USE_SIGNALFD	416	#if EV_USE_SIGNALFD
376	# 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
377	#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
378		444
379	/**/	445	/**/
380		446
381	#if EV_VERIFY >= 3	447	#if EV_VERIFY >= 3
382	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)	448	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
…		…
394	*/	460	*/
395	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	461	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
396		462
397	#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) */
398	#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) */
399	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds, TODO */
400		465
401	#if __GNUC__ >= 4	466	#if __GNUC__ >= 4
402	# define expect(expr,value) __builtin_expect ((expr),(value))	467	# define expect(expr,value) __builtin_expect ((expr),(value))
403	# define noinline __attribute__ ((noinline))	468	# define noinline __attribute__ ((noinline))
404	#else	469	#else
…		…
445		510
446	#if EV_USE_MONOTONIC	511	#if EV_USE_MONOTONIC
447	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? */
448	#endif	513	#endif
449		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
450	#ifdef _WIN32	525	#ifdef _WIN32
451	# include "ev_win32.c"	526	# include "ev_win32.c"
452	#endif	527	#endif
453		528
454	/*****************************************************************************/	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
455		538
456	static void (syserr_cb)(const char msg);	539	static void (syserr_cb)(const char msg);
457		540
458	void	541	void
459	ev_set_syserr_cb (void (cb)(const char msg))	542	ev_set_syserr_cb (void (cb)(const char msg))
…		…
469		552
470	if (syserr_cb)	553	if (syserr_cb)
471	syserr_cb (msg);	554	syserr_cb (msg);
472	else	555	else
473	{	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
474	perror (msg);	565	perror (msg);
		566	#endif
475	abort ();	567	abort ();
476	}	568	}
477	}	569	}
478		570
479	static void *	571	static void *
480	ev_realloc_emul (void *ptr, long size)	572	ev_realloc_emul (void *ptr, long size)
481	{	573	{
		574	#if __GLIBC__
		575	return realloc (ptr, size);
		576	#else
482	/* some systems, notably openbsd and darwin, fail to properly	577	/* some systems, notably openbsd and darwin, fail to properly
483	* 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
484	* the single unix specification, so work around them here.	579	* the single unix specification, so work around them here.
485	*/	580	*/
486		581
487	if (size)	582	if (size)
488	return realloc (ptr, size);	583	return realloc (ptr, size);
489		584
490	free (ptr);	585	free (ptr);
491	return 0;	586	return 0;
		587	#endif
492	}	588	}
493		589
494	static void (alloc)(void *ptr, long size) = ev_realloc_emul;	590	static void (alloc)(void *ptr, long size) = ev_realloc_emul;
495		591
496	void	592	void
…		…
504	{	600	{
505	ptr = alloc (ptr, size);	601	ptr = alloc (ptr, size);
506		602
507	if (!ptr && size)	603	if (!ptr && size)
508	{	604	{
		605	#if EV_AVOID_STDIO
		606	ev_printerr ("libev: memory allocation failed, aborting.\n");
		607	#else
509	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	608	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		609	#endif
510	abort ();	610	abort ();
511	}	611	}
512		612
513	return ptr;	613	return ptr;
514	}	614	}
…		…
845		945
846	#if EV_SELECT_IS_WINSOCKET	946	#if EV_SELECT_IS_WINSOCKET
847	if (events)	947	if (events)
848	{	948	{
849	unsigned long arg;	949	unsigned long arg;
850	#ifdef EV_FD_TO_WIN32_HANDLE
851	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	950	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
852	#else
853	anfd->handle = _get_osfhandle (fd);
854	#endif
855	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	951	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
856	}	952	}
857	#endif	953	#endif
858		954
859	{	955	{
…		…
897	ev_io_stop (EV_A_ w);	993	ev_io_stop (EV_A_ w);
898	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);
899	}	995	}
900	}	996	}
901		997
902	/* check whether the given fd is atcually valid, for error recovery */	998	/* check whether the given fd is actually valid, for error recovery */
903	inline_size int	999	inline_size int
904	fd_valid (int fd)	1000	fd_valid (int fd)
905	{	1001	{
906	#ifdef _WIN32	1002	#ifdef _WIN32
907	return _get_osfhandle (fd) != -1;	1003	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
908	#else	1004	#else
909	return fcntl (fd, F_GETFD) != -1;	1005	return fcntl (fd, F_GETFD) != -1;
910	#endif	1006	#endif
911	}	1007	}
912		1008
…		…
930		1026
931	for (fd = anfdmax; fd--; )	1027	for (fd = anfdmax; fd--; )
932	if (anfds [fd].events)	1028	if (anfds [fd].events)
933	{	1029	{
934	fd_kill (EV_A_ fd);	1030	fd_kill (EV_A_ fd);
935	return;	1031	break;
936	}	1032	}
937	}	1033	}
938		1034
939	/* 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 */
940	static void noinline	1036	static void noinline
…		…
947	{	1043	{
948	anfds [fd].events = 0;	1044	anfds [fd].events = 0;
949	anfds [fd].emask = 0;	1045	anfds [fd].emask = 0;
950	fd_change (EV_A_ fd, EV__IOFDSET \| EV_ANFD_REIFY);	1046	fd_change (EV_A_ fd, EV__IOFDSET \| EV_ANFD_REIFY);
951	}	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
952	}	1062	}
953		1063
954	/*****************************************************************************/	1064	/*****************************************************************************/
955		1065
956	/*	1066	/*
…		…
1030		1140
1031	for (;;)	1141	for (;;)
1032	{	1142	{
1033	int c = k << 1;	1143	int c = k << 1;
1034		1144
1035	if (c > N + HEAP0 - 1)	1145	if (c >= N + HEAP0)
1036	break;	1146	break;
1037		1147
1038	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])
1039	? 1 : 0;	1149	? 1 : 0;
1040		1150
…		…
1076		1186
1077	/* move an element suitably so it is in a correct place */	1187	/* move an element suitably so it is in a correct place */
1078	inline_size void	1188	inline_size void
1079	adjustheap (ANHE *heap, int N, int k)	1189	adjustheap (ANHE *heap, int N, int k)
1080	{	1190	{
1081	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)]))
1082	upheap (heap, k);	1192	upheap (heap, k);
1083	else	1193	else
1084	downheap (heap, N, k);	1194	downheap (heap, N, k);
1085	}	1195	}
1086		1196
…		…
1099	/*****************************************************************************/	1209	/*****************************************************************************/
1100		1210
1101	/* associate signal watchers to a signal signal */	1211	/* associate signal watchers to a signal signal */
1102	typedef struct	1212	typedef struct
1103	{	1213	{
		1214	EV_ATOMIC_T pending;
		1215	#if EV_MULTIPLICITY
		1216	EV_P;
		1217	#endif
1104	WL head;	1218	WL head;
1105	EV_ATOMIC_T gotsig;
1106	} ANSIG;	1219	} ANSIG;
1107		1220
1108	static ANSIG *signals;	1221	static ANSIG signals [EV_NSIG - 1];
1109	static int signalmax;
1110
1111	static EV_ATOMIC_T gotsig;
1112		1222
1113	/*****************************************************************************/	1223	/*****************************************************************************/
1114		1224
1115	/* used to prepare libev internal fd's */	1225	#if EV_SIGNAL_ENABLE \|\| EV_ASYNC_ENABLE
1116	/* this is not fork-safe */
1117	inline_speed void
1118	fd_intern (int fd)
1119	{
1120	#ifdef _WIN32
1121	unsigned long arg = 1;
1122	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1123	#else
1124	fcntl (fd, F_SETFD, FD_CLOEXEC);
1125	fcntl (fd, F_SETFL, O_NONBLOCK);
1126	#endif
1127	}
1128		1226
1129	static void noinline	1227	static void noinline
1130	evpipe_init (EV_P)	1228	evpipe_init (EV_P)
1131	{	1229	{
1132	if (!ev_is_active (&pipe_w))	1230	if (!ev_is_active (&pipe_w))
1133	{	1231	{
1134	#if EV_USE_EVENTFD	1232	# if EV_USE_EVENTFD
1135	evfd = eventfd (0, EFD_NONBLOCK \| EFD_CLOEXEC);	1233	evfd = eventfd (0, EFD_NONBLOCK \| EFD_CLOEXEC);
1136	if (evfd < 0 && errno == EINVAL)	1234	if (evfd < 0 && errno == EINVAL)
1137	evfd = eventfd (0, 0);	1235	evfd = eventfd (0, 0);
1138		1236
1139	if (evfd >= 0)	1237	if (evfd >= 0)
…		…
1141	evpipe [0] = -1;	1239	evpipe [0] = -1;
1142	fd_intern (evfd); /* doing it twice doesn't hurt */	1240	fd_intern (evfd); /* doing it twice doesn't hurt */
1143	ev_io_set (&pipe_w, evfd, EV_READ);	1241	ev_io_set (&pipe_w, evfd, EV_READ);
1144	}	1242	}
1145	else	1243	else
1146	#endif	1244	# endif
1147	{	1245	{
1148	while (pipe (evpipe))	1246	while (pipe (evpipe))
1149	ev_syserr ("(libev) error creating signal/async pipe");	1247	ev_syserr ("(libev) error creating signal/async pipe");
1150		1248
1151	fd_intern (evpipe [0]);	1249	fd_intern (evpipe [0]);
…		…
1162	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1260	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1163	{	1261	{
1164	if (!*flag)	1262	if (!*flag)
1165	{	1263	{
1166	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;
1167		1266
1168	*flag = 1;	1267	*flag = 1;
1169		1268
1170	#if EV_USE_EVENTFD	1269	#if EV_USE_EVENTFD
1171	if (evfd >= 0)	1270	if (evfd >= 0)
…		…
1173	uint64_t counter = 1;	1272	uint64_t counter = 1;
1174	write (evfd, &counter, sizeof (uint64_t));	1273	write (evfd, &counter, sizeof (uint64_t));
1175	}	1274	}
1176	else	1275	else
1177	#endif	1276	#endif
1178	write (evpipe [1], &old_errno, 1);	1277	write (evpipe [1], &dummy, 1);
1179		1278
1180	errno = old_errno;	1279	errno = old_errno;
1181	}	1280	}
1182	}	1281	}
1183		1282
1184	/* called whenever the libev signal pipe */	1283	/* called whenever the libev signal pipe */
1185	/* got some events (signal, async) */	1284	/* got some events (signal, async) */
1186	static void	1285	static void
1187	pipecb (EV_P_ ev_io *iow, int revents)	1286	pipecb (EV_P_ ev_io *iow, int revents)
1188	{	1287	{
		1288	int i;
		1289
1189	#if EV_USE_EVENTFD	1290	#if EV_USE_EVENTFD
1190	if (evfd >= 0)	1291	if (evfd >= 0)
1191	{	1292	{
1192	uint64_t counter;	1293	uint64_t counter;
1193	read (evfd, &counter, sizeof (uint64_t));	1294	read (evfd, &counter, sizeof (uint64_t));
…		…
1197	{	1298	{
1198	char dummy;	1299	char dummy;
1199	read (evpipe [0], &dummy, 1);	1300	read (evpipe [0], &dummy, 1);
1200	}	1301	}
1201		1302
1202	if (gotsig && ev_is_default_loop (EV_A))	1303	if (sig_pending)
1203	{	1304	{
1204	int signum;	1305	sig_pending = 0;
1205	gotsig = 0;
1206		1306
1207	for (signum = signalmax; signum--; )	1307	for (i = EV_NSIG - 1; i--; )
1208	if (signals [signum].gotsig)	1308	if (expect_false (signals [i].pending))
1209	ev_feed_signal_event (EV_A_ signum + 1);	1309	ev_feed_signal_event (EV_A_ i + 1);
1210	}	1310	}
1211		1311
1212	#if EV_ASYNC_ENABLE	1312	#if EV_ASYNC_ENABLE
1213	if (gotasync)	1313	if (async_pending)
1214	{	1314	{
1215	int i;	1315	async_pending = 0;
1216	gotasync = 0;
1217		1316
1218	for (i = asynccnt; i--; )	1317	for (i = asynccnt; i--; )
1219	if (asyncs [i]->sent)	1318	if (asyncs [i]->sent)
1220	{	1319	{
1221	asyncs [i]->sent = 0;	1320	asyncs [i]->sent = 0;
…		…
1229		1328
1230	static void	1329	static void
1231	ev_sighandler (int signum)	1330	ev_sighandler (int signum)
1232	{	1331	{
1233	#if EV_MULTIPLICITY	1332	#if EV_MULTIPLICITY
1234	struct ev_loop *loop = &default_loop_struct;	1333	EV_P = signals [signum - 1].loop;
1235	#endif	1334	#endif
1236		1335
1237	#if _WIN32	1336	#ifdef _WIN32
1238	signal (signum, ev_sighandler);	1337	signal (signum, ev_sighandler);
1239	#endif	1338	#endif
1240		1339
1241	signals [signum - 1].gotsig = 1;	1340	signals [signum - 1].pending = 1;
1242	evpipe_write (EV_A_ &gotsig);	1341	evpipe_write (EV_A_ &sig_pending);
1243	}	1342	}
1244		1343
1245	void noinline	1344	void noinline
1246	ev_feed_signal_event (EV_P_ int signum)	1345	ev_feed_signal_event (EV_P_ int signum)
1247	{	1346	{
1248	WL w;	1347	WL w;
1249		1348
		1349	if (expect_false (signum <= 0 \|\| signum > EV_NSIG))
		1350	return;
		1351
		1352	--signum;
		1353
1250	#if EV_MULTIPLICITY	1354	#if EV_MULTIPLICITY
1251	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 */
1252	#endif	1356	/* or, likely more useful, feeding a signal nobody is waiting for */
1253		1357
1254	--signum;	1358	if (expect_false (signals [signum].loop != EV_A))
1255
1256	if (signum < 0 \|\| signum >= signalmax)
1257	return;	1359	return;
		1360	#endif
1258		1361
1259	signals [signum].gotsig = 0;	1362	signals [signum].pending = 0;
1260		1363
1261	for (w = signals [signum].head; w; w = w->next)	1364	for (w = signals [signum].head; w; w = w->next)
1262	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1365	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1263	}	1366	}
1264		1367
1265	#if EV_USE_SIGNALFD	1368	#if EV_USE_SIGNALFD
1266	static void	1369	static void
1267	sigfdcb (EV_P_ ev_io *iow, int revents)	1370	sigfdcb (EV_P_ ev_io *iow, int revents)
1268	{	1371	{
1269	struct signalfd_siginfo si[4], *sip;	1372	struct signalfd_siginfo si[2], sip; / these structs are big */
1270		1373
1271	for (;;)	1374	for (;;)
1272	{	1375	{
1273	ssize_t res = read (sigfd, si, sizeof (si));	1376	ssize_t res = read (sigfd, si, sizeof (si));
1274		1377
…		…
1280	break;	1383	break;
1281	}	1384	}
1282	}	1385	}
1283	#endif	1386	#endif
1284		1387
		1388	#endif
		1389
1285	/*****************************************************************************/	1390	/*****************************************************************************/
1286		1391
		1392	#if EV_CHILD_ENABLE
1287	static WL childs [EV_PID_HASHSIZE];	1393	static WL childs [EV_PID_HASHSIZE];
1288
1289	#ifndef _WIN32
1290		1394
1291	static ev_signal childev;	1395	static ev_signal childev;
1292		1396
1293	#ifndef WIFCONTINUED	1397	#ifndef WIFCONTINUED
1294	# define WIFCONTINUED(status) 0	1398	# define WIFCONTINUED(status) 0
…		…
1508	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1612	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1509	have_monotonic = 1;	1613	have_monotonic = 1;
1510	}	1614	}
1511	#endif	1615	#endif
1512		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
1513	ev_rt_now = ev_time ();	1628	ev_rt_now = ev_time ();
1514	mn_now = get_clock ();	1629	mn_now = get_clock ();
1515	now_floor = mn_now;	1630	now_floor = mn_now;
1516	rtmn_diff = ev_rt_now - mn_now;	1631	rtmn_diff = ev_rt_now - mn_now;
1517	#if EV_MINIMAL < 2	1632	#if EV_MINIMAL < 2
…		…
1520		1635
1521	io_blocktime = 0.;	1636	io_blocktime = 0.;
1522	timeout_blocktime = 0.;	1637	timeout_blocktime = 0.;
1523	backend = 0;	1638	backend = 0;
1524	backend_fd = -1;	1639	backend_fd = -1;
1525	gotasync = 0;	1640	sig_pending = 0;
		1641	#if EV_ASYNC_ENABLE
		1642	async_pending = 0;
		1643	#endif
1526	#if EV_USE_INOTIFY	1644	#if EV_USE_INOTIFY
1527	fs_fd = -2;	1645	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1528	#endif	1646	#endif
1529	#if EV_USE_SIGNALFD	1647	#if EV_USE_SIGNALFD
1530	sigfd = -2;	1648	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1531	#endif	1649	#endif
1532
1533	/* pid check not overridable via env */
1534	#ifndef _WIN32
1535	if (flags & EVFLAG_FORKCHECK)
1536	curpid = getpid ();
1537	#endif
1538
1539	if (!(flags & EVFLAG_NOENV)
1540	&& !enable_secure ()
1541	&& getenv ("LIBEV_FLAGS"))
1542	flags = atoi (getenv ("LIBEV_FLAGS"));
1543		1650
1544	if (!(flags & 0x0000ffffU))	1651	if (!(flags & 0x0000ffffU))
1545	flags \|= ev_recommended_backends ();	1652	flags \|= ev_recommended_backends ();
1546		1653
1547	#if EV_USE_PORT	1654	#if EV_USE_PORT
…		…
1560	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1667	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1561	#endif	1668	#endif
1562		1669
1563	ev_prepare_init (&pending_w, pendingcb);	1670	ev_prepare_init (&pending_w, pendingcb);
1564		1671
		1672	#if EV_SIGNAL_ENABLE \|\| EV_ASYNC_ENABLE
1565	ev_init (&pipe_w, pipecb);	1673	ev_init (&pipe_w, pipecb);
1566	ev_set_priority (&pipe_w, EV_MAXPRI);	1674	ev_set_priority (&pipe_w, EV_MAXPRI);
		1675	#endif
1567	}	1676	}
1568	}	1677	}
1569		1678
1570	/* free up a loop structure */	1679	/* free up a loop structure */
1571	static void noinline	1680	static void noinline
…		…
1583	close (evfd);	1692	close (evfd);
1584	#endif	1693	#endif
1585		1694
1586	if (evpipe [0] >= 0)	1695	if (evpipe [0] >= 0)
1587	{	1696	{
1588	close (evpipe [0]);	1697	EV_WIN32_CLOSE_FD (evpipe [0]);
1589	close (evpipe [1]);	1698	EV_WIN32_CLOSE_FD (evpipe [1]);
1590	}	1699	}
1591	}	1700	}
1592		1701
1593	#if EV_USE_SIGNALFD	1702	#if EV_USE_SIGNALFD
1594	if (ev_is_active (&sigfd_w))	1703	if (ev_is_active (&sigfd_w))
1595	{
1596	/ev_ref (EV_A);/
1597	/ev_io_stop (EV_A_ &sigfd_w);/
1598
1599	close (sigfd);	1704	close (sigfd);
1600	}
1601	#endif	1705	#endif
1602		1706
1603	#if EV_USE_INOTIFY	1707	#if EV_USE_INOTIFY
1604	if (fs_fd >= 0)	1708	if (fs_fd >= 0)
1605	close (fs_fd);	1709	close (fs_fd);
…		…
1630	#if EV_IDLE_ENABLE	1734	#if EV_IDLE_ENABLE
1631	array_free (idle, [i]);	1735	array_free (idle, [i]);
1632	#endif	1736	#endif
1633	}	1737	}
1634		1738
1635	ev_free (anfds); anfdmax = 0;	1739	ev_free (anfds); anfds = 0; anfdmax = 0;
1636		1740
1637	/* have to use the microsoft-never-gets-it-right macro */	1741	/* have to use the microsoft-never-gets-it-right macro */
1638	array_free (rfeed, EMPTY);	1742	array_free (rfeed, EMPTY);
1639	array_free (fdchange, EMPTY);	1743	array_free (fdchange, EMPTY);
1640	array_free (timer, EMPTY);	1744	array_free (timer, EMPTY);
…		…
1675		1779
1676	if (ev_is_active (&pipe_w))	1780	if (ev_is_active (&pipe_w))
1677	{	1781	{
1678	/* this "locks" the handlers against writing to the pipe */	1782	/* this "locks" the handlers against writing to the pipe */
1679	/* while we modify the fd vars */	1783	/* while we modify the fd vars */
1680	gotsig = 1;	1784	sig_pending = 1;
1681	#if EV_ASYNC_ENABLE	1785	#if EV_ASYNC_ENABLE
1682	gotasync = 1;	1786	async_pending = 1;
1683	#endif	1787	#endif
1684		1788
1685	ev_ref (EV_A);	1789	ev_ref (EV_A);
1686	ev_io_stop (EV_A_ &pipe_w);	1790	ev_io_stop (EV_A_ &pipe_w);
1687		1791
…		…
1690	close (evfd);	1794	close (evfd);
1691	#endif	1795	#endif
1692		1796
1693	if (evpipe [0] >= 0)	1797	if (evpipe [0] >= 0)
1694	{	1798	{
1695	close (evpipe [0]);	1799	EV_WIN32_CLOSE_FD (evpipe [0]);
1696	close (evpipe [1]);	1800	EV_WIN32_CLOSE_FD (evpipe [1]);
1697	}	1801	}
1698		1802
1699	evpipe_init (EV_A);	1803	evpipe_init (EV_A);
1700	/* now iterate over everything, in case we missed something */	1804	/* now iterate over everything, in case we missed something */
1701	pipecb (EV_A_ &pipe_w, EV_READ);	1805	pipecb (EV_A_ &pipe_w, EV_READ);
…		…
1707	#if EV_MULTIPLICITY	1811	#if EV_MULTIPLICITY
1708		1812
1709	struct ev_loop *	1813	struct ev_loop *
1710	ev_loop_new (unsigned int flags)	1814	ev_loop_new (unsigned int flags)
1711	{	1815	{
1712	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));
1713		1817
1714	memset (loop, 0, sizeof (struct ev_loop));	1818	memset (EV_A, 0, sizeof (struct ev_loop));
1715	loop_init (EV_A_ flags);	1819	loop_init (EV_A_ flags);
1716		1820
1717	if (ev_backend (EV_A))	1821	if (ev_backend (EV_A))
1718	return loop;	1822	return EV_A;
1719		1823
1720	return 0;	1824	return 0;
1721	}	1825	}
1722		1826
1723	void	1827	void
…		…
1826		1930
1827	assert (checkmax >= checkcnt);	1931	assert (checkmax >= checkcnt);
1828	array_verify (EV_A_ (W *)checks, checkcnt);	1932	array_verify (EV_A_ (W *)checks, checkcnt);
1829		1933
1830	# if 0	1934	# if 0
		1935	#if EV_CHILD_ENABLE
1831	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)
1832	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)	1937	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
		1938	#endif
1833	# endif	1939	# endif
1834	#endif	1940	#endif
1835	}	1941	}
1836	#endif	1942	#endif
1837		1943
…		…
1844	#endif	1950	#endif
1845	{	1951	{
1846	if (!ev_default_loop_ptr)	1952	if (!ev_default_loop_ptr)
1847	{	1953	{
1848	#if EV_MULTIPLICITY	1954	#if EV_MULTIPLICITY
1849	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1955	EV_P = ev_default_loop_ptr = &default_loop_struct;
1850	#else	1956	#else
1851	ev_default_loop_ptr = 1;	1957	ev_default_loop_ptr = 1;
1852	#endif	1958	#endif
1853		1959
1854	loop_init (EV_A_ flags);	1960	loop_init (EV_A_ flags);
1855		1961
1856	if (ev_backend (EV_A))	1962	if (ev_backend (EV_A))
1857	{	1963	{
1858	#ifndef _WIN32	1964	#if EV_CHILD_ENABLE
1859	ev_signal_init (&childev, childcb, SIGCHLD);	1965	ev_signal_init (&childev, childcb, SIGCHLD);
1860	ev_set_priority (&childev, EV_MAXPRI);	1966	ev_set_priority (&childev, EV_MAXPRI);
1861	ev_signal_start (EV_A_ &childev);	1967	ev_signal_start (EV_A_ &childev);
1862	ev_unref (EV_A); /* child watcher should not keep loop alive */	1968	ev_unref (EV_A); /* child watcher should not keep loop alive */
1863	#endif	1969	#endif
…		…
1871		1977
1872	void	1978	void
1873	ev_default_destroy (void)	1979	ev_default_destroy (void)
1874	{	1980	{
1875	#if EV_MULTIPLICITY	1981	#if EV_MULTIPLICITY
1876	struct ev_loop *loop = ev_default_loop_ptr;	1982	EV_P = ev_default_loop_ptr;
1877	#endif	1983	#endif
1878		1984
1879	ev_default_loop_ptr = 0;	1985	ev_default_loop_ptr = 0;
1880		1986
1881	#ifndef _WIN32	1987	#if EV_CHILD_ENABLE
1882	ev_ref (EV_A); /* child watcher */	1988	ev_ref (EV_A); /* child watcher */
1883	ev_signal_stop (EV_A_ &childev);	1989	ev_signal_stop (EV_A_ &childev);
1884	#endif	1990	#endif
1885		1991
1886	loop_destroy (EV_A);	1992	loop_destroy (EV_A);
…		…
1888		1994
1889	void	1995	void
1890	ev_default_fork (void)	1996	ev_default_fork (void)
1891	{	1997	{
1892	#if EV_MULTIPLICITY	1998	#if EV_MULTIPLICITY
1893	struct ev_loop *loop = ev_default_loop_ptr;	1999	EV_P = ev_default_loop_ptr;
1894	#endif	2000	#endif
1895		2001
1896	postfork = 1; /* must be in line with ev_loop_fork */	2002	postfork = 1; /* must be in line with ev_loop_fork */
1897	}	2003	}
1898		2004
…		…
2093	ANHE_at_cache (*he);	2199	ANHE_at_cache (*he);
2094	}	2200	}
2095	}	2201	}
2096		2202
2097	/* fetch new monotonic and realtime times from the kernel */	2203	/* fetch new monotonic and realtime times from the kernel */
2098	/* also detetc if there was a timejump, and act accordingly */	2204	/* also detect if there was a timejump, and act accordingly */
2099	inline_speed void	2205	inline_speed void
2100	time_update (EV_P_ ev_tstamp max_block)	2206	time_update (EV_P_ ev_tstamp max_block)
2101	{	2207	{
2102	#if EV_USE_MONOTONIC	2208	#if EV_USE_MONOTONIC
2103	if (expect_true (have_monotonic))	2209	if (expect_true (have_monotonic))
…		…
2364	inline_size void	2470	inline_size void
2365	wlist_del (WL *head, WL elem)	2471	wlist_del (WL *head, WL elem)
2366	{	2472	{
2367	while (*head)	2473	while (*head)
2368	{	2474	{
2369	if (*head == elem)	2475	if (expect_true (*head == elem))
2370	{	2476	{
2371	*head = elem->next;	2477	*head = elem->next;
2372	return;	2478	break;
2373	}	2479	}
2374		2480
2375	head = &(*head)->next;	2481	head = &(*head)->next;
2376	}	2482	}
2377	}	2483	}
…		…
2437		2543
2438	if (expect_false (ev_is_active (w)))	2544	if (expect_false (ev_is_active (w)))
2439	return;	2545	return;
2440		2546
2441	assert (("libev: ev_io_start called with negative fd", fd >= 0));	2547	assert (("libev: ev_io_start called with negative fd", fd >= 0));
2442	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET \| EV_READ \| EV_WRITE))));	2548	assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET \| EV_READ \| EV_WRITE))));
2443		2549
2444	EV_FREQUENT_CHECK;	2550	EV_FREQUENT_CHECK;
2445		2551
2446	ev_start (EV_A_ (W)w, 1);	2552	ev_start (EV_A_ (W)w, 1);
2447	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2553	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
…		…
2517	timers [active] = timers [timercnt + HEAP0];	2623	timers [active] = timers [timercnt + HEAP0];
2518	adjustheap (timers, timercnt, active);	2624	adjustheap (timers, timercnt, active);
2519	}	2625	}
2520	}	2626	}
2521		2627
2522	EV_FREQUENT_CHECK;
2523
2524	ev_at (w) -= mn_now;	2628	ev_at (w) -= mn_now;
2525		2629
2526	ev_stop (EV_A_ (W)w);	2630	ev_stop (EV_A_ (W)w);
		2631
		2632	EV_FREQUENT_CHECK;
2527	}	2633	}
2528		2634
2529	void noinline	2635	void noinline
2530	ev_timer_again (EV_P_ ev_timer *w)	2636	ev_timer_again (EV_P_ ev_timer *w)
2531	{	2637	{
…		…
2610	periodics [active] = periodics [periodiccnt + HEAP0];	2716	periodics [active] = periodics [periodiccnt + HEAP0];
2611	adjustheap (periodics, periodiccnt, active);	2717	adjustheap (periodics, periodiccnt, active);
2612	}	2718	}
2613	}	2719	}
2614		2720
2615	EV_FREQUENT_CHECK;
2616
2617	ev_stop (EV_A_ (W)w);	2721	ev_stop (EV_A_ (W)w);
		2722
		2723	EV_FREQUENT_CHECK;
2618	}	2724	}
2619		2725
2620	void noinline	2726	void noinline
2621	ev_periodic_again (EV_P_ ev_periodic *w)	2727	ev_periodic_again (EV_P_ ev_periodic *w)
2622	{	2728	{
…		…
2628		2734
2629	#ifndef SA_RESTART	2735	#ifndef SA_RESTART
2630	# define SA_RESTART 0	2736	# define SA_RESTART 0
2631	#endif	2737	#endif
2632		2738
		2739	#if EV_SIGNAL_ENABLE
		2740
2633	void noinline	2741	void noinline
2634	ev_signal_start (EV_P_ ev_signal *w)	2742	ev_signal_start (EV_P_ ev_signal *w)
2635	{	2743	{
2636	#if EV_MULTIPLICITY
2637	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2638	#endif
2639	if (expect_false (ev_is_active (w)))	2744	if (expect_false (ev_is_active (w)))
2640	return;	2745	return;
2641		2746
2642	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
2643		2755
2644	EV_FREQUENT_CHECK;	2756	EV_FREQUENT_CHECK;
2645		2757
2646	#if EV_USE_SIGNALFD	2758	#if EV_USE_SIGNALFD
2647	if (sigfd == -2)	2759	if (sigfd == -2)
…		…
2669	sigaddset (&sigfd_set, w->signum);	2781	sigaddset (&sigfd_set, w->signum);
2670	sigprocmask (SIG_BLOCK, &sigfd_set, 0);	2782	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2671		2783
2672	signalfd (sigfd, &sigfd_set, 0);	2784	signalfd (sigfd, &sigfd_set, 0);
2673	}	2785	}
2674	else
2675	#endif
2676	evpipe_init (EV_A);
2677
2678	{
2679	#ifndef _WIN32
2680	sigset_t full, prev;
2681	sigfillset (&full);
2682	sigprocmask (SIG_SETMASK, &full, &prev);
2683	#endif
2684
2685	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2686
2687	#ifndef _WIN32
2688	# if EV_USE_SIGNALFD
2689	if (sigfd < 0)/TODO/
2690	# endif	2786	#endif
2691	sigdelset (&prev, w->signum);
2692	sigprocmask (SIG_SETMASK, &prev, 0);
2693	#endif
2694	}
2695		2787
2696	ev_start (EV_A_ (W)w, 1);	2788	ev_start (EV_A_ (W)w, 1);
2697	wlist_add (&signals [w->signum - 1].head, (WL)w);	2789	wlist_add (&signals [w->signum - 1].head, (WL)w);
2698		2790
2699	if (!((WL)w)->next)	2791	if (!((WL)w)->next)
2700	{
2701	#if _WIN32
2702	signal (w->signum, ev_sighandler);
2703	#else
2704	# if EV_USE_SIGNALFD	2792	# if EV_USE_SIGNALFD
2705	if (sigfd < 0) /TODO/	2793	if (sigfd < 0) /TODO/
2706	# endif	2794	# endif
2707	{	2795	{
		2796	# ifdef _WIN32
		2797	evpipe_init (EV_A);
		2798
		2799	signal (w->signum, ev_sighandler);
		2800	# else
2708	struct sigaction sa = { };	2801	struct sigaction sa;
		2802
		2803	evpipe_init (EV_A);
		2804
2709	sa.sa_handler = ev_sighandler;	2805	sa.sa_handler = ev_sighandler;
2710	sigfillset (&sa.sa_mask);	2806	sigfillset (&sa.sa_mask);
2711	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 */
2712	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
2713	}	2814	}
2714	#endif
2715	}
2716		2815
2717	EV_FREQUENT_CHECK;	2816	EV_FREQUENT_CHECK;
2718	}	2817	}
2719		2818
2720	void noinline	2819	void noinline
…		…
2728		2827
2729	wlist_del (&signals [w->signum - 1].head, (WL)w);	2828	wlist_del (&signals [w->signum - 1].head, (WL)w);
2730	ev_stop (EV_A_ (W)w);	2829	ev_stop (EV_A_ (W)w);
2731		2830
2732	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
2733	#if EV_USE_SIGNALFD	2836	#if EV_USE_SIGNALFD
2734	if (sigfd >= 0)	2837	if (sigfd >= 0)
2735	{	2838	{
2736	sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D	2839	sigset_t ss;
		2840
		2841	sigemptyset (&ss);
		2842	sigaddset (&ss, w->signum);
2737	sigdelset (&sigfd_set, w->signum);	2843	sigdelset (&sigfd_set, w->signum);
		2844
2738	signalfd (sigfd, &sigfd_set, 0);	2845	signalfd (sigfd, &sigfd_set, 0);
2739	sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D	2846	sigprocmask (SIG_UNBLOCK, &ss, 0);
2740	/TODO: maybe unblock signal? /
2741	}	2847	}
2742	else	2848	else
2743	#endif	2849	#endif
2744	signal (w->signum, SIG_DFL);	2850	signal (w->signum, SIG_DFL);
		2851	}
2745		2852
2746	EV_FREQUENT_CHECK;	2853	EV_FREQUENT_CHECK;
2747	}	2854	}
		2855
		2856	#endif
		2857
		2858	#if EV_CHILD_ENABLE
2748		2859
2749	void	2860	void
2750	ev_child_start (EV_P_ ev_child *w)	2861	ev_child_start (EV_P_ ev_child *w)
2751	{	2862	{
2752	#if EV_MULTIPLICITY	2863	#if EV_MULTIPLICITY
…		…
2776	ev_stop (EV_A_ (W)w);	2887	ev_stop (EV_A_ (W)w);
2777		2888
2778	EV_FREQUENT_CHECK;	2889	EV_FREQUENT_CHECK;
2779	}	2890	}
2780		2891
		2892	#endif
		2893
2781	#if EV_STAT_ENABLE	2894	#if EV_STAT_ENABLE
2782		2895
2783	# ifdef _WIN32	2896	# ifdef _WIN32
2784	# undef lstat	2897	# undef lstat
2785	# define lstat(a,b) _stati64 (a,b)	2898	# define lstat(a,b) _stati64 (a,b)
…		…
2790	#define MIN_STAT_INTERVAL 0.1074891	2903	#define MIN_STAT_INTERVAL 0.1074891
2791		2904
2792	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);
2793		2906
2794	#if EV_USE_INOTIFY	2907	#if EV_USE_INOTIFY
2795	# 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)
2796		2911
2797	static void noinline	2912	static void noinline
2798	infy_add (EV_P_ ev_stat *w)	2913	infy_add (EV_P_ ev_stat *w)
2799	{	2914	{
2800	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);
2801		2916
2802	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 */
2803	{	2937	}
		2938	else
		2939	{
		2940	/* can't use inotify, continue to stat */
2804	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;	2941	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2805	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2806		2942
2807	/* monitor some parent directory for speedup hints */	2943	/* if path is not there, monitor some parent directory for speedup hints */
2808	/* 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, */
2809	/* but an efficiency issue only */	2945	/* but an efficiency issue only */
2810	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)	2946	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)
2811	{	2947	{
2812	char path [4096];	2948	char path [4096];
…		…
2828	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));	2964	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));
2829	}	2965	}
2830	}	2966	}
2831		2967
2832	if (w->wd >= 0)	2968	if (w->wd >= 0)
2833	{
2834	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);
2835		2970
2836	/* now local changes will be tracked by inotify, but remote changes won't */	2971	/* now re-arm timer, if required */
2837	/* unless the filesystem it known to be local, we therefore still poll */	2972	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2838	/* also do poll on <2.6.25, but with normal frequency */
2839	struct statfs sfs;
2840
2841	if (fs_2625 && !statfs (w->path, &sfs))
2842	if (sfs.f_type == 0x1373 /* devfs */
2843	\|\| sfs.f_type == 0xEF53 /* ext2/3 */
2844	\|\| sfs.f_type == 0x3153464a /* jfs */
2845	\|\| sfs.f_type == 0x52654973 /* reiser3 */
2846	\|\| sfs.f_type == 0x01021994 /* tempfs */
2847	\|\| sfs.f_type == 0x58465342 /* xfs */)
2848	return;
2849
2850	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2851	ev_timer_again (EV_A_ &w->timer);	2973	ev_timer_again (EV_A_ &w->timer);
2852	}	2974	if (ev_is_active (&w->timer)) ev_unref (EV_A);
2853	}	2975	}
2854		2976
2855	static void noinline	2977	static void noinline
2856	infy_del (EV_P_ ev_stat *w)	2978	infy_del (EV_P_ ev_stat *w)
2857	{	2979	{
…		…
2902		3024
2903	static void	3025	static void
2904	infy_cb (EV_P_ ev_io *w, int revents)	3026	infy_cb (EV_P_ ev_io *w, int revents)
2905	{	3027	{
2906	char buf [EV_INOTIFY_BUFSIZE];	3028	char buf [EV_INOTIFY_BUFSIZE];
2907	struct inotify_event ev = (struct inotify_event )buf;
2908	int ofs;	3029	int ofs;
2909	int len = read (fs_fd, buf, sizeof (buf));	3030	int len = read (fs_fd, buf, sizeof (buf));
2910		3031
2911	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);
2912	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;
2913	}	3070	}
2914		3071
2915	inline_size void	3072	inline_size void
2916	check_2625 (EV_P)	3073	ev_check_2625 (EV_P)
2917	{	3074	{
2918	/* kernels < 2.6.25 are borked	3075	/* kernels < 2.6.25 are borked
2919	* 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
2920	*/	3077	*/
2921	struct utsname buf;	3078	if (ev_linux_version () < 0x020619)
2922	int major, minor, micro;
2923
2924	if (uname (&buf))
2925	return;	3079	return;
2926		3080
2927	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2928	return;
2929
2930	if (major < 2
2931	\|\| (major == 2 && minor < 6)
2932	\|\| (major == 2 && minor == 6 && micro < 25))
2933	return;
2934
2935	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 ();
2936	}	3093	}
2937		3094
2938	inline_size void	3095	inline_size void
2939	infy_init (EV_P)	3096	infy_init (EV_P)
2940	{	3097	{
2941	if (fs_fd != -2)	3098	if (fs_fd != -2)
2942	return;	3099	return;
2943		3100
2944	fs_fd = -1;	3101	fs_fd = -1;
2945		3102
2946	check_2625 (EV_A);	3103	ev_check_2625 (EV_A);
2947		3104
2948	fs_fd = inotify_init ();	3105	fs_fd = infy_newfd ();
2949		3106
2950	if (fs_fd >= 0)	3107	if (fs_fd >= 0)
2951	{	3108	{
		3109	fd_intern (fs_fd);
2952	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3110	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2953	ev_set_priority (&fs_w, EV_MAXPRI);	3111	ev_set_priority (&fs_w, EV_MAXPRI);
2954	ev_io_start (EV_A_ &fs_w);	3112	ev_io_start (EV_A_ &fs_w);
		3113	ev_unref (EV_A);
2955	}	3114	}
2956	}	3115	}
2957		3116
2958	inline_size void	3117	inline_size void
2959	infy_fork (EV_P)	3118	infy_fork (EV_P)
…		…
2961	int slot;	3120	int slot;
2962		3121
2963	if (fs_fd < 0)	3122	if (fs_fd < 0)
2964	return;	3123	return;
2965		3124
		3125	ev_ref (EV_A);
		3126	ev_io_stop (EV_A_ &fs_w);
2966	close (fs_fd);	3127	close (fs_fd);
2967	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	}
2968		3137
2969	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3138	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2970	{	3139	{
2971	WL w_ = fs_hash [slot].head;	3140	WL w_ = fs_hash [slot].head;
2972	fs_hash [slot].head = 0;	3141	fs_hash [slot].head = 0;
…		…
2979	w->wd = -1;	3148	w->wd = -1;
2980		3149
2981	if (fs_fd >= 0)	3150	if (fs_fd >= 0)
2982	infy_add (EV_A_ w); /* re-add, no matter what */	3151	infy_add (EV_A_ w); /* re-add, no matter what */
2983	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);
2984	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	}
2985	}	3159	}
2986	}	3160	}
2987	}	3161	}
2988		3162
2989	#endif	3163	#endif
…		…
3006	static void noinline	3180	static void noinline
3007	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	3181	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3008	{	3182	{
3009	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));	3183	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
3010		3184
3011	/* we copy this here each the time so that */	3185	ev_statdata prev = w->attr;
3012	/* prev has the old value when the callback gets invoked */
3013	w->prev = w->attr;
3014	ev_stat_stat (EV_A_ w);	3186	ev_stat_stat (EV_A_ w);
3015		3187
3016	/* 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 */
3017	if (	3189	if (
3018	w->prev.st_dev != w->attr.st_dev	3190	prev.st_dev != w->attr.st_dev
3019	\|\| w->prev.st_ino != w->attr.st_ino	3191	\|\| prev.st_ino != w->attr.st_ino
3020	\|\| w->prev.st_mode != w->attr.st_mode	3192	\|\| prev.st_mode != w->attr.st_mode
3021	\|\| w->prev.st_nlink != w->attr.st_nlink	3193	\|\| prev.st_nlink != w->attr.st_nlink
3022	\|\| w->prev.st_uid != w->attr.st_uid	3194	\|\| prev.st_uid != w->attr.st_uid
3023	\|\| w->prev.st_gid != w->attr.st_gid	3195	\|\| prev.st_gid != w->attr.st_gid
3024	\|\| w->prev.st_rdev != w->attr.st_rdev	3196	\|\| prev.st_rdev != w->attr.st_rdev
3025	\|\| w->prev.st_size != w->attr.st_size	3197	\|\| prev.st_size != w->attr.st_size
3026	\|\| w->prev.st_atime != w->attr.st_atime	3198	\|\| prev.st_atime != w->attr.st_atime
3027	\|\| w->prev.st_mtime != w->attr.st_mtime	3199	\|\| prev.st_mtime != w->attr.st_mtime
3028	\|\| w->prev.st_ctime != w->attr.st_ctime	3200	\|\| prev.st_ctime != w->attr.st_ctime
3029	) {	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
3030	#if EV_USE_INOTIFY	3207	#if EV_USE_INOTIFY
3031	if (fs_fd >= 0)	3208	if (fs_fd >= 0)
3032	{	3209	{
3033	infy_del (EV_A_ w);	3210	infy_del (EV_A_ w);
3034	infy_add (EV_A_ w);	3211	infy_add (EV_A_ w);
…		…
3059		3236
3060	if (fs_fd >= 0)	3237	if (fs_fd >= 0)
3061	infy_add (EV_A_ w);	3238	infy_add (EV_A_ w);
3062	else	3239	else
3063	#endif	3240	#endif
		3241	{
3064	ev_timer_again (EV_A_ &w->timer);	3242	ev_timer_again (EV_A_ &w->timer);
		3243	ev_unref (EV_A);
		3244	}
3065		3245
3066	ev_start (EV_A_ (W)w, 1);	3246	ev_start (EV_A_ (W)w, 1);
3067		3247
3068	EV_FREQUENT_CHECK;	3248	EV_FREQUENT_CHECK;
3069	}	3249	}
…		…
3078	EV_FREQUENT_CHECK;	3258	EV_FREQUENT_CHECK;
3079		3259
3080	#if EV_USE_INOTIFY	3260	#if EV_USE_INOTIFY
3081	infy_del (EV_A_ w);	3261	infy_del (EV_A_ w);
3082	#endif	3262	#endif
		3263
		3264	if (ev_is_active (&w->timer))
		3265	{
		3266	ev_ref (EV_A);
3083	ev_timer_stop (EV_A_ &w->timer);	3267	ev_timer_stop (EV_A_ &w->timer);
		3268	}
3084		3269
3085	ev_stop (EV_A_ (W)w);	3270	ev_stop (EV_A_ (W)w);
3086		3271
3087	EV_FREQUENT_CHECK;	3272	EV_FREQUENT_CHECK;
3088	}	3273	}
…		…
3229	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3414	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3230	{	3415	{
3231	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));	3416	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
3232		3417
3233	{	3418	{
3234	struct ev_loop *loop = w->other;	3419	EV_P = w->other;
3235		3420
3236	while (fdchangecnt)	3421	while (fdchangecnt)
3237	{	3422	{
3238	fd_reify (EV_A);	3423	fd_reify (EV_A);
3239	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3424	ev_loop (EV_A_ EVLOOP_NONBLOCK);
…		…
3247	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));
3248		3433
3249	ev_embed_stop (EV_A_ w);	3434	ev_embed_stop (EV_A_ w);
3250		3435
3251	{	3436	{
3252	struct ev_loop *loop = w->other;	3437	EV_P = w->other;
3253		3438
3254	ev_loop_fork (EV_A);	3439	ev_loop_fork (EV_A);
3255	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3440	ev_loop (EV_A_ EVLOOP_NONBLOCK);
3256	}	3441	}
3257		3442
…		…
3271	{	3456	{
3272	if (expect_false (ev_is_active (w)))	3457	if (expect_false (ev_is_active (w)))
3273	return;	3458	return;
3274		3459
3275	{	3460	{
3276	struct ev_loop *loop = w->other;	3461	EV_P = w->other;
3277	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 ()));
3278	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);
3279	}	3464	}
3280		3465
3281	EV_FREQUENT_CHECK;	3466	EV_FREQUENT_CHECK;
…		…
3308		3493
3309	ev_io_stop (EV_A_ &w->io);	3494	ev_io_stop (EV_A_ &w->io);
3310	ev_prepare_stop (EV_A_ &w->prepare);	3495	ev_prepare_stop (EV_A_ &w->prepare);
3311	ev_fork_stop (EV_A_ &w->fork);	3496	ev_fork_stop (EV_A_ &w->fork);
3312		3497
		3498	ev_stop (EV_A_ (W)w);
		3499
3313	EV_FREQUENT_CHECK;	3500	EV_FREQUENT_CHECK;
3314	}	3501	}
3315	#endif	3502	#endif
3316		3503
3317	#if EV_FORK_ENABLE	3504	#if EV_FORK_ENABLE
…		…
3393		3580
3394	void	3581	void
3395	ev_async_send (EV_P_ ev_async *w)	3582	ev_async_send (EV_P_ ev_async *w)
3396	{	3583	{
3397	w->sent = 1;	3584	w->sent = 1;
3398	evpipe_write (EV_A_ &gotasync);	3585	evpipe_write (EV_A_ &async_pending);
3399	}	3586	}
3400	#endif	3587	#endif
3401		3588
3402	/*****************************************************************************/	3589	/*****************************************************************************/
3403		3590
…		…
3552	if (types & EV_CHECK)	3739	if (types & EV_CHECK)
3553	for (i = checkcnt; i--; )	3740	for (i = checkcnt; i--; )
3554	cb (EV_A_ EV_CHECK, checks [i]);	3741	cb (EV_A_ EV_CHECK, checks [i]);
3555		3742
3556	if (types & EV_SIGNAL)	3743	if (types & EV_SIGNAL)
3557	for (i = 0; i < signalmax; ++i)	3744	for (i = 0; i < EV_NSIG - 1; ++i)
3558	for (wl = signals [i].head; wl; )	3745	for (wl = signals [i].head; wl; )
3559	{	3746	{
3560	wn = wl->next;	3747	wn = wl->next;
3561	cb (EV_A_ EV_SIGNAL, wl);	3748	cb (EV_A_ EV_SIGNAL, wl);
3562	wl = wn;	3749	wl = wn;

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Comparing libev/ev.c (file contents): Revision 1.304 by root, Sun Jul 19 03:12:28 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 1.304 by root, Sun Jul 19 03:12:28 2009 UTC vs.
Revision 1.336 by root, Wed Mar 10 08:19:38 2010 UTC