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

Comparing libev/ev.c (file contents):
Revision 1.295 by root, Wed Jul 8 04:29:31 2009 UTC vs.
Revision 1.323 by root, Wed Jan 13 12:44:33 2010 UTC

…		…
110	# define EV_USE_EPOLL 0	110	# define EV_USE_EPOLL 0
111	# endif	111	# endif
112	# endif	112	# endif
113		113
114	# ifndef EV_USE_KQUEUE	114	# ifndef EV_USE_KQUEUE
115	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	115	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
116	# define EV_USE_KQUEUE 1	116	# define EV_USE_KQUEUE 1
117	# else	117	# else
118	# define EV_USE_KQUEUE 0	118	# define EV_USE_KQUEUE 0
119	# endif	119	# endif
120	# endif	120	# endif
…		…
133	# else	133	# else
134	# define EV_USE_INOTIFY 0	134	# define EV_USE_INOTIFY 0
135	# endif	135	# endif
136	# endif	136	# endif
137		137
		138	# ifndef EV_USE_SIGNALFD
		139	# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
		140	# define EV_USE_SIGNALFD 1
		141	# else
		142	# define EV_USE_SIGNALFD 0
		143	# endif
		144	# endif
		145
138	# ifndef EV_USE_EVENTFD	146	# ifndef EV_USE_EVENTFD
139	# if HAVE_EVENTFD	147	# if HAVE_EVENTFD
140	# define EV_USE_EVENTFD 1	148	# define EV_USE_EVENTFD 1
141	# else	149	# else
142	# define EV_USE_EVENTFD 0	150	# define EV_USE_EVENTFD 0
…		…
145		153
146	#endif	154	#endif
147		155
148	#include <math.h>	156	#include <math.h>
149	#include <stdlib.h>	157	#include <stdlib.h>
		158	#include <string.h>
150	#include <fcntl.h>	159	#include <fcntl.h>
151	#include <stddef.h>	160	#include <stddef.h>
152		161
153	#include <stdio.h>	162	#include <stdio.h>
154		163
…		…
178	# endif	187	# endif
179	#endif	188	#endif
180		189
181	/* this block tries to deduce configuration from header-defined symbols and defaults */	190	/* this block tries to deduce configuration from header-defined symbols and defaults */
182		191
		192	/* try to deduce the maximum number of signals on this platform */
		193	#if defined (EV_NSIG)
		194	/* use what's provided */
		195	#elif defined (NSIG)
		196	# define EV_NSIG (NSIG)
		197	#elif defined(_NSIG)
		198	# define EV_NSIG (_NSIG)
		199	#elif defined (SIGMAX)
		200	# define EV_NSIG (SIGMAX+1)
		201	#elif defined (SIG_MAX)
		202	# define EV_NSIG (SIG_MAX+1)
		203	#elif defined (_SIG_MAX)
		204	# define EV_NSIG (_SIG_MAX+1)
		205	#elif defined (MAXSIG)
		206	# define EV_NSIG (MAXSIG+1)
		207	#elif defined (MAX_SIG)
		208	# define EV_NSIG (MAX_SIG+1)
		209	#elif defined (SIGARRAYSIZE)
		210	# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
		211	#elif defined (_sys_nsig)
		212	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
		213	#else
		214	# error "unable to find value for NSIG, please report"
		215	/* to make it compile regardless, just remove the above line */
		216	# define EV_NSIG 65
		217	#endif
		218
183	#ifndef EV_USE_CLOCK_SYSCALL	219	#ifndef EV_USE_CLOCK_SYSCALL
184	# if __linux && __GLIBC__ >= 2	220	# if __linux && __GLIBC__ >= 2
185	# define EV_USE_CLOCK_SYSCALL 1	221	# define EV_USE_CLOCK_SYSCALL 1
186	# else	222	# else
187	# define EV_USE_CLOCK_SYSCALL 0	223	# define EV_USE_CLOCK_SYSCALL 0
…		…
263	#ifndef EV_USE_EVENTFD	299	#ifndef EV_USE_EVENTFD
264	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))	300	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265	# define EV_USE_EVENTFD 1	301	# define EV_USE_EVENTFD 1
266	# else	302	# else
267	# define EV_USE_EVENTFD 0	303	# define EV_USE_EVENTFD 0
		304	# endif
		305	#endif
		306
		307	#ifndef EV_USE_SIGNALFD
		308	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		309	# define EV_USE_SIGNALFD 1
		310	# else
		311	# define EV_USE_SIGNALFD 0
268	# endif	312	# endif
269	#endif	313	#endif
270		314
271	#if 0 /* debugging */	315	#if 0 /* debugging */
272	# define EV_VERIFY 3	316	# define EV_VERIFY 3
…		…
339	#endif	383	#endif
340		384
341	#if EV_USE_EVENTFD	385	#if EV_USE_EVENTFD
342	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	386	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
343	# include <stdint.h>	387	# include <stdint.h>
		388	# ifndef EFD_NONBLOCK
		389	# define EFD_NONBLOCK O_NONBLOCK
		390	# endif
		391	# ifndef EFD_CLOEXEC
		392	# ifdef O_CLOEXEC
		393	# define EFD_CLOEXEC O_CLOEXEC
		394	# else
		395	# define EFD_CLOEXEC 02000000
		396	# endif
		397	# endif
344	# ifdef __cplusplus	398	# ifdef __cplusplus
345	extern "C" {	399	extern "C" {
346	# endif	400	# endif
347	int eventfd (unsigned int initval, int flags);	401	int eventfd (unsigned int initval, int flags);
348	# ifdef __cplusplus	402	# ifdef __cplusplus
349	}	403	}
350	# endif	404	# endif
351	#endif	405	#endif
		406
		407	#if EV_USE_SIGNALFD
		408	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		409	# include <stdint.h>
		410	# ifndef SFD_NONBLOCK
		411	# define SFD_NONBLOCK O_NONBLOCK
		412	# endif
		413	# ifndef SFD_CLOEXEC
		414	# ifdef O_CLOEXEC
		415	# define SFD_CLOEXEC O_CLOEXEC
		416	# else
		417	# define SFD_CLOEXEC 02000000
		418	# endif
		419	# endif
		420	# ifdef __cplusplus
		421	extern "C" {
		422	# endif
		423	int signalfd (int fd, const sigset_t *mask, int flags);
		424
		425	struct signalfd_siginfo
		426	{
		427	uint32_t ssi_signo;
		428	char pad[128 - sizeof (uint32_t)];
		429	};
		430	# ifdef __cplusplus
		431	}
		432	# endif
		433	#endif
		434
352		435
353	/**/	436	/**/
354		437
355	#if EV_VERIFY >= 3	438	#if EV_VERIFY >= 3
356	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)	439	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
…		…
368	*/	451	*/
369	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	452	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
370		453
371	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	454	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
372	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	455	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
373	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds, TODO */
374		456
375	#if __GNUC__ >= 4	457	#if __GNUC__ >= 4
376	# define expect(expr,value) __builtin_expect ((expr),(value))	458	# define expect(expr,value) __builtin_expect ((expr),(value))
377	# define noinline __attribute__ ((noinline))	459	# define noinline __attribute__ ((noinline))
378	#else	460	#else
…		…
419		501
420	#if EV_USE_MONOTONIC	502	#if EV_USE_MONOTONIC
421	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	503	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
422	#endif	504	#endif
423		505
		506	#ifndef EV_FD_TO_WIN32_HANDLE
		507	# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		508	#endif
		509	#ifndef EV_WIN32_HANDLE_TO_FD
		510	# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
		511	#endif
		512	#ifndef EV_WIN32_CLOSE_FD
		513	# define EV_WIN32_CLOSE_FD(fd) close (fd)
		514	#endif
		515
424	#ifdef _WIN32	516	#ifdef _WIN32
425	# include "ev_win32.c"	517	# include "ev_win32.c"
426	#endif	518	#endif
427		519
428	/*****************************************************************************/	520	/*****************************************************************************/
…		…
490	#define ev_malloc(size) ev_realloc (0, (size))	582	#define ev_malloc(size) ev_realloc (0, (size))
491	#define ev_free(ptr) ev_realloc ((ptr), 0)	583	#define ev_free(ptr) ev_realloc ((ptr), 0)
492		584
493	/*****************************************************************************/	585	/*****************************************************************************/
494		586
		587	/* set in reify when reification needed */
		588	#define EV_ANFD_REIFY 1
		589
495	/* file descriptor info structure */	590	/* file descriptor info structure */
496	typedef struct	591	typedef struct
497	{	592	{
498	WL head;	593	WL head;
499	unsigned char events; /* the events watched for */	594	unsigned char events; /* the events watched for */
500	unsigned char reify; /* flag set when this ANFD needs reification */	595	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
501	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */	596	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
502	unsigned char unused;	597	unsigned char unused;
503	#if EV_USE_EPOLL	598	#if EV_USE_EPOLL
504	unsigned int egen; /* generation counter to counter epoll bugs */	599	unsigned int egen; /* generation counter to counter epoll bugs */
505	#endif	600	#endif
…		…
567		662
568	static int ev_default_loop_ptr;	663	static int ev_default_loop_ptr;
569		664
570	#endif	665	#endif
571		666
		667	#if EV_MINIMAL < 2
		668	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		669	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		670	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		671	#else
		672	# define EV_RELEASE_CB (void)0
		673	# define EV_ACQUIRE_CB (void)0
		674	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		675	#endif
		676
		677	#define EVUNLOOP_RECURSE 0x80
		678
572	/*****************************************************************************/	679	/*****************************************************************************/
573		680
574	#ifndef EV_HAVE_EV_TIME	681	#ifndef EV_HAVE_EV_TIME
575	ev_tstamp	682	ev_tstamp
576	ev_time (void)	683	ev_time (void)
…		…
632		739
633	tv.tv_sec = (time_t)delay;	740	tv.tv_sec = (time_t)delay;
634	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	741	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
635		742
636	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */	743	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
637	/* somehting not guaranteed by newer posix versions, but guaranteed */	744	/* something not guaranteed by newer posix versions, but guaranteed */
638	/* by older ones */	745	/* by older ones */
639	select (0, 0, 0, 0, &tv);	746	select (0, 0, 0, 0, &tv);
640	#endif	747	#endif
641	}	748	}
642	}	749	}
…		…
750	}	857	}
751		858
752	/*****************************************************************************/	859	/*****************************************************************************/
753		860
754	inline_speed void	861	inline_speed void
755	fd_event (EV_P_ int fd, int revents)	862	fd_event_nc (EV_P_ int fd, int revents)
756	{	863	{
757	ANFD *anfd = anfds + fd;	864	ANFD *anfd = anfds + fd;
758	ev_io *w;	865	ev_io *w;
759		866
760	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)	867	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
…		…
764	if (ev)	871	if (ev)
765	ev_feed_event (EV_A_ (W)w, ev);	872	ev_feed_event (EV_A_ (W)w, ev);
766	}	873	}
767	}	874	}
768		875
		876	/* do not submit kernel events for fds that have reify set */
		877	/* because that means they changed while we were polling for new events */
		878	inline_speed void
		879	fd_event (EV_P_ int fd, int revents)
		880	{
		881	ANFD *anfd = anfds + fd;
		882
		883	if (expect_true (!anfd->reify))
		884	fd_event_nc (EV_A_ fd, revents);
		885	}
		886
769	void	887	void
770	ev_feed_fd_event (EV_P_ int fd, int revents)	888	ev_feed_fd_event (EV_P_ int fd, int revents)
771	{	889	{
772	if (fd >= 0 && fd < anfdmax)	890	if (fd >= 0 && fd < anfdmax)
773	fd_event (EV_A_ fd, revents);	891	fd_event_nc (EV_A_ fd, revents);
774	}	892	}
775		893
776	/* make sure the external fd watch events are in-sync */	894	/* make sure the external fd watch events are in-sync */
777	/* with the kernel/libev internal state */	895	/* with the kernel/libev internal state */
778	inline_size void	896	inline_size void
…		…
793		911
794	#if EV_SELECT_IS_WINSOCKET	912	#if EV_SELECT_IS_WINSOCKET
795	if (events)	913	if (events)
796	{	914	{
797	unsigned long arg;	915	unsigned long arg;
798	#ifdef EV_FD_TO_WIN32_HANDLE
799	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	916	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
800	#else
801	anfd->handle = _get_osfhandle (fd);
802	#endif
803	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	917	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
804	}	918	}
805	#endif	919	#endif
806		920
807	{	921	{
…		…
850	/* check whether the given fd is atcually valid, for error recovery */	964	/* check whether the given fd is atcually valid, for error recovery */
851	inline_size int	965	inline_size int
852	fd_valid (int fd)	966	fd_valid (int fd)
853	{	967	{
854	#ifdef _WIN32	968	#ifdef _WIN32
855	return _get_osfhandle (fd) != -1;	969	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
856	#else	970	#else
857	return fcntl (fd, F_GETFD) != -1;	971	return fcntl (fd, F_GETFD) != -1;
858	#endif	972	#endif
859	}	973	}
860		974
…		…
878		992
879	for (fd = anfdmax; fd--; )	993	for (fd = anfdmax; fd--; )
880	if (anfds [fd].events)	994	if (anfds [fd].events)
881	{	995	{
882	fd_kill (EV_A_ fd);	996	fd_kill (EV_A_ fd);
883	return;	997	break;
884	}	998	}
885	}	999	}
886		1000
887	/* usually called after fork if backend needs to re-arm all fds from scratch */	1001	/* usually called after fork if backend needs to re-arm all fds from scratch */
888	static void noinline	1002	static void noinline
…		…
893	for (fd = 0; fd < anfdmax; ++fd)	1007	for (fd = 0; fd < anfdmax; ++fd)
894	if (anfds [fd].events)	1008	if (anfds [fd].events)
895	{	1009	{
896	anfds [fd].events = 0;	1010	anfds [fd].events = 0;
897	anfds [fd].emask = 0;	1011	anfds [fd].emask = 0;
898	fd_change (EV_A_ fd, EV__IOFDSET \| 1);	1012	fd_change (EV_A_ fd, EV__IOFDSET \| EV_ANFD_REIFY);
899	}	1013	}
900	}	1014	}
901		1015
902	/*****************************************************************************/	1016	/*****************************************************************************/
903		1017
…		…
978		1092
979	for (;;)	1093	for (;;)
980	{	1094	{
981	int c = k << 1;	1095	int c = k << 1;
982		1096
983	if (c > N + HEAP0 - 1)	1097	if (c >= N + HEAP0)
984	break;	1098	break;
985		1099
986	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])	1100	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
987	? 1 : 0;	1101	? 1 : 0;
988		1102
…		…
1024		1138
1025	/* move an element suitably so it is in a correct place */	1139	/* move an element suitably so it is in a correct place */
1026	inline_size void	1140	inline_size void
1027	adjustheap (ANHE *heap, int N, int k)	1141	adjustheap (ANHE *heap, int N, int k)
1028	{	1142	{
1029	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1143	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1030	upheap (heap, k);	1144	upheap (heap, k);
1031	else	1145	else
1032	downheap (heap, N, k);	1146	downheap (heap, N, k);
1033	}	1147	}
1034		1148
…		…
1047	/*****************************************************************************/	1161	/*****************************************************************************/
1048		1162
1049	/* associate signal watchers to a signal signal */	1163	/* associate signal watchers to a signal signal */
1050	typedef struct	1164	typedef struct
1051	{	1165	{
		1166	EV_ATOMIC_T pending;
		1167	#if EV_MULTIPLICITY
		1168	EV_P;
		1169	#endif
1052	WL head;	1170	WL head;
1053	EV_ATOMIC_T gotsig;
1054	} ANSIG;	1171	} ANSIG;
1055		1172
1056	static ANSIG *signals;	1173	static ANSIG signals [EV_NSIG - 1];
1057	static int signalmax;
1058
1059	static EV_ATOMIC_T gotsig;
1060		1174
1061	/*****************************************************************************/	1175	/*****************************************************************************/
1062		1176
1063	/* used to prepare libev internal fd's */	1177	/* used to prepare libev internal fd's */
1064	/* this is not fork-safe */	1178	/* this is not fork-safe */
1065	inline_speed void	1179	inline_speed void
1066	fd_intern (int fd)	1180	fd_intern (int fd)
1067	{	1181	{
1068	#ifdef _WIN32	1182	#ifdef _WIN32
1069	unsigned long arg = 1;	1183	unsigned long arg = 1;
1070	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1184	ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1071	#else	1185	#else
1072	fcntl (fd, F_SETFD, FD_CLOEXEC);	1186	fcntl (fd, F_SETFD, FD_CLOEXEC);
1073	fcntl (fd, F_SETFL, O_NONBLOCK);	1187	fcntl (fd, F_SETFL, O_NONBLOCK);
1074	#endif	1188	#endif
1075	}	1189	}
…		…
1078	evpipe_init (EV_P)	1192	evpipe_init (EV_P)
1079	{	1193	{
1080	if (!ev_is_active (&pipe_w))	1194	if (!ev_is_active (&pipe_w))
1081	{	1195	{
1082	#if EV_USE_EVENTFD	1196	#if EV_USE_EVENTFD
		1197	evfd = eventfd (0, EFD_NONBLOCK \| EFD_CLOEXEC);
		1198	if (evfd < 0 && errno == EINVAL)
1083	if ((evfd = eventfd (0, 0)) >= 0)	1199	evfd = eventfd (0, 0);
		1200
		1201	if (evfd >= 0)
1084	{	1202	{
1085	evpipe [0] = -1;	1203	evpipe [0] = -1;
1086	fd_intern (evfd);	1204	fd_intern (evfd); /* doing it twice doesn't hurt */
1087	ev_io_set (&pipe_w, evfd, EV_READ);	1205	ev_io_set (&pipe_w, evfd, EV_READ);
1088	}	1206	}
1089	else	1207	else
1090	#endif	1208	#endif
1091	{	1209	{
…		…
1128	/* called whenever the libev signal pipe */	1246	/* called whenever the libev signal pipe */
1129	/* got some events (signal, async) */	1247	/* got some events (signal, async) */
1130	static void	1248	static void
1131	pipecb (EV_P_ ev_io *iow, int revents)	1249	pipecb (EV_P_ ev_io *iow, int revents)
1132	{	1250	{
		1251	int i;
		1252
1133	#if EV_USE_EVENTFD	1253	#if EV_USE_EVENTFD
1134	if (evfd >= 0)	1254	if (evfd >= 0)
1135	{	1255	{
1136	uint64_t counter;	1256	uint64_t counter;
1137	read (evfd, &counter, sizeof (uint64_t));	1257	read (evfd, &counter, sizeof (uint64_t));
…		…
1141	{	1261	{
1142	char dummy;	1262	char dummy;
1143	read (evpipe [0], &dummy, 1);	1263	read (evpipe [0], &dummy, 1);
1144	}	1264	}
1145		1265
1146	if (gotsig && ev_is_default_loop (EV_A))	1266	if (sig_pending)
1147	{	1267	{
1148	int signum;	1268	sig_pending = 0;
1149	gotsig = 0;
1150		1269
1151	for (signum = signalmax; signum--; )	1270	for (i = EV_NSIG - 1; i--; )
1152	if (signals [signum].gotsig)	1271	if (expect_false (signals [i].pending))
1153	ev_feed_signal_event (EV_A_ signum + 1);	1272	ev_feed_signal_event (EV_A_ i + 1);
1154	}	1273	}
1155		1274
1156	#if EV_ASYNC_ENABLE	1275	#if EV_ASYNC_ENABLE
1157	if (gotasync)	1276	if (async_pending)
1158	{	1277	{
1159	int i;	1278	async_pending = 0;
1160	gotasync = 0;
1161		1279
1162	for (i = asynccnt; i--; )	1280	for (i = asynccnt; i--; )
1163	if (asyncs [i]->sent)	1281	if (asyncs [i]->sent)
1164	{	1282	{
1165	asyncs [i]->sent = 0;	1283	asyncs [i]->sent = 0;
…		…
1173		1291
1174	static void	1292	static void
1175	ev_sighandler (int signum)	1293	ev_sighandler (int signum)
1176	{	1294	{
1177	#if EV_MULTIPLICITY	1295	#if EV_MULTIPLICITY
1178	struct ev_loop *loop = &default_loop_struct;	1296	EV_P = signals [signum - 1].loop;
1179	#endif	1297	#endif
1180		1298
1181	#if _WIN32	1299	#ifdef _WIN32
1182	signal (signum, ev_sighandler);	1300	signal (signum, ev_sighandler);
1183	#endif	1301	#endif
1184		1302
1185	signals [signum - 1].gotsig = 1;	1303	signals [signum - 1].pending = 1;
1186	evpipe_write (EV_A_ &gotsig);	1304	evpipe_write (EV_A_ &sig_pending);
1187	}	1305	}
1188		1306
1189	void noinline	1307	void noinline
1190	ev_feed_signal_event (EV_P_ int signum)	1308	ev_feed_signal_event (EV_P_ int signum)
1191	{	1309	{
1192	WL w;	1310	WL w;
1193		1311
		1312	if (expect_false (signum <= 0 \|\| signum > EV_NSIG))
		1313	return;
		1314
		1315	--signum;
		1316
1194	#if EV_MULTIPLICITY	1317	#if EV_MULTIPLICITY
1195	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1318	/* it is permissible to try to feed a signal to the wrong loop */
1196	#endif	1319	/* or, likely more useful, feeding a signal nobody is waiting for */
1197		1320
1198	--signum;	1321	if (expect_false (signals [signum].loop != EV_A))
1199
1200	if (signum < 0 \|\| signum >= signalmax)
1201	return;	1322	return;
		1323	#endif
1202		1324
1203	signals [signum].gotsig = 0;	1325	signals [signum].pending = 0;
1204		1326
1205	for (w = signals [signum].head; w; w = w->next)	1327	for (w = signals [signum].head; w; w = w->next)
1206	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1328	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1207	}	1329	}
		1330
		1331	#if EV_USE_SIGNALFD
		1332	static void
		1333	sigfdcb (EV_P_ ev_io *iow, int revents)
		1334	{
		1335	struct signalfd_siginfo si[2], sip; / these structs are big */
		1336
		1337	for (;;)
		1338	{
		1339	ssize_t res = read (sigfd, si, sizeof (si));
		1340
		1341	/* not ISO-C, as res might be -1, but works with SuS */
		1342	for (sip = si; (char )sip < (char )si + res; ++sip)
		1343	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1344
		1345	if (res < (ssize_t)sizeof (si))
		1346	break;
		1347	}
		1348	}
		1349	#endif
1208		1350
1209	/*****************************************************************************/	1351	/*****************************************************************************/
1210		1352
1211	static WL childs [EV_PID_HASHSIZE];	1353	static WL childs [EV_PID_HASHSIZE];
1212		1354
…		…
1357	ev_backend (EV_P)	1499	ev_backend (EV_P)
1358	{	1500	{
1359	return backend;	1501	return backend;
1360	}	1502	}
1361		1503
		1504	#if EV_MINIMAL < 2
1362	unsigned int	1505	unsigned int
1363	ev_loop_count (EV_P)	1506	ev_loop_count (EV_P)
1364	{	1507	{
1365	return loop_count;	1508	return loop_count;
1366	}	1509	}
…		…
1380	void	1523	void
1381	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1524	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1382	{	1525	{
1383	timeout_blocktime = interval;	1526	timeout_blocktime = interval;
1384	}	1527	}
		1528
		1529	void
		1530	ev_set_userdata (EV_P_ void *data)
		1531	{
		1532	userdata = data;
		1533	}
		1534
		1535	void *
		1536	ev_userdata (EV_P)
		1537	{
		1538	return userdata;
		1539	}
		1540
		1541	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1542	{
		1543	invoke_cb = invoke_pending_cb;
		1544	}
		1545
		1546	void ev_set_loop_release_cb (EV_P_ void (release)(EV_P), void (acquire)(EV_P))
		1547	{
		1548	release_cb = release;
		1549	acquire_cb = acquire;
		1550	}
		1551	#endif
1385		1552
1386	/* initialise a loop structure, must be zero-initialised */	1553	/* initialise a loop structure, must be zero-initialised */
1387	static void noinline	1554	static void noinline
1388	loop_init (EV_P_ unsigned int flags)	1555	loop_init (EV_P_ unsigned int flags)
1389	{	1556	{
…		…
1407	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1574	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1408	have_monotonic = 1;	1575	have_monotonic = 1;
1409	}	1576	}
1410	#endif	1577	#endif
1411		1578
		1579	/* pid check not overridable via env */
		1580	#ifndef _WIN32
		1581	if (flags & EVFLAG_FORKCHECK)
		1582	curpid = getpid ();
		1583	#endif
		1584
		1585	if (!(flags & EVFLAG_NOENV)
		1586	&& !enable_secure ()
		1587	&& getenv ("LIBEV_FLAGS"))
		1588	flags = atoi (getenv ("LIBEV_FLAGS"));
		1589
1412	ev_rt_now = ev_time ();	1590	ev_rt_now = ev_time ();
1413	mn_now = get_clock ();	1591	mn_now = get_clock ();
1414	now_floor = mn_now;	1592	now_floor = mn_now;
1415	rtmn_diff = ev_rt_now - mn_now;	1593	rtmn_diff = ev_rt_now - mn_now;
		1594	#if EV_MINIMAL < 2
		1595	invoke_cb = ev_invoke_pending;
		1596	#endif
1416		1597
1417	io_blocktime = 0.;	1598	io_blocktime = 0.;
1418	timeout_blocktime = 0.;	1599	timeout_blocktime = 0.;
1419	backend = 0;	1600	backend = 0;
1420	backend_fd = -1;	1601	backend_fd = -1;
1421	gotasync = 0;	1602	sig_pending = 0;
		1603	#if EV_ASYNC_ENABLE
		1604	async_pending = 0;
		1605	#endif
1422	#if EV_USE_INOTIFY	1606	#if EV_USE_INOTIFY
1423	fs_fd = -2;	1607	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1424	#endif	1608	#endif
1425		1609	#if EV_USE_SIGNALFD
1426	/* pid check not overridable via env */	1610	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1427	#ifndef _WIN32
1428	if (flags & EVFLAG_FORKCHECK)
1429	curpid = getpid ();
1430	#endif	1611	#endif
1431
1432	if (!(flags & EVFLAG_NOENV)
1433	&& !enable_secure ()
1434	&& getenv ("LIBEV_FLAGS"))
1435	flags = atoi (getenv ("LIBEV_FLAGS"));
1436		1612
1437	if (!(flags & 0x0000ffffU))	1613	if (!(flags & 0x0000ffffU))
1438	flags \|= ev_recommended_backends ();	1614	flags \|= ev_recommended_backends ();
1439		1615
1440	#if EV_USE_PORT	1616	#if EV_USE_PORT
…		…
1466	{	1642	{
1467	int i;	1643	int i;
1468		1644
1469	if (ev_is_active (&pipe_w))	1645	if (ev_is_active (&pipe_w))
1470	{	1646	{
1471	ev_ref (EV_A); /* signal watcher */	1647	/ev_ref (EV_A);/
1472	ev_io_stop (EV_A_ &pipe_w);	1648	/ev_io_stop (EV_A_ &pipe_w);/
1473		1649
1474	#if EV_USE_EVENTFD	1650	#if EV_USE_EVENTFD
1475	if (evfd >= 0)	1651	if (evfd >= 0)
1476	close (evfd);	1652	close (evfd);
1477	#endif	1653	#endif
1478		1654
1479	if (evpipe [0] >= 0)	1655	if (evpipe [0] >= 0)
1480	{	1656	{
1481	close (evpipe [0]);	1657	EV_WIN32_CLOSE_FD (evpipe [0]);
1482	close (evpipe [1]);	1658	EV_WIN32_CLOSE_FD (evpipe [1]);
1483	}	1659	}
1484	}	1660	}
		1661
		1662	#if EV_USE_SIGNALFD
		1663	if (ev_is_active (&sigfd_w))
		1664	close (sigfd);
		1665	#endif
1485		1666
1486	#if EV_USE_INOTIFY	1667	#if EV_USE_INOTIFY
1487	if (fs_fd >= 0)	1668	if (fs_fd >= 0)
1488	close (fs_fd);	1669	close (fs_fd);
1489	#endif	1670	#endif
…		…
1513	#if EV_IDLE_ENABLE	1694	#if EV_IDLE_ENABLE
1514	array_free (idle, [i]);	1695	array_free (idle, [i]);
1515	#endif	1696	#endif
1516	}	1697	}
1517		1698
1518	ev_free (anfds); anfdmax = 0;	1699	ev_free (anfds); anfds = 0; anfdmax = 0;
1519		1700
1520	/* have to use the microsoft-never-gets-it-right macro */	1701	/* have to use the microsoft-never-gets-it-right macro */
1521	array_free (rfeed, EMPTY);	1702	array_free (rfeed, EMPTY);
1522	array_free (fdchange, EMPTY);	1703	array_free (fdchange, EMPTY);
1523	array_free (timer, EMPTY);	1704	array_free (timer, EMPTY);
…		…
1558		1739
1559	if (ev_is_active (&pipe_w))	1740	if (ev_is_active (&pipe_w))
1560	{	1741	{
1561	/* this "locks" the handlers against writing to the pipe */	1742	/* this "locks" the handlers against writing to the pipe */
1562	/* while we modify the fd vars */	1743	/* while we modify the fd vars */
1563	gotsig = 1;	1744	sig_pending = 1;
1564	#if EV_ASYNC_ENABLE	1745	#if EV_ASYNC_ENABLE
1565	gotasync = 1;	1746	async_pending = 1;
1566	#endif	1747	#endif
1567		1748
1568	ev_ref (EV_A);	1749	ev_ref (EV_A);
1569	ev_io_stop (EV_A_ &pipe_w);	1750	ev_io_stop (EV_A_ &pipe_w);
1570		1751
…		…
1573	close (evfd);	1754	close (evfd);
1574	#endif	1755	#endif
1575		1756
1576	if (evpipe [0] >= 0)	1757	if (evpipe [0] >= 0)
1577	{	1758	{
1578	close (evpipe [0]);	1759	EV_WIN32_CLOSE_FD (evpipe [0]);
1579	close (evpipe [1]);	1760	EV_WIN32_CLOSE_FD (evpipe [1]);
1580	}	1761	}
1581		1762
1582	evpipe_init (EV_A);	1763	evpipe_init (EV_A);
1583	/* now iterate over everything, in case we missed something */	1764	/* now iterate over everything, in case we missed something */
1584	pipecb (EV_A_ &pipe_w, EV_READ);	1765	pipecb (EV_A_ &pipe_w, EV_READ);
…		…
1590	#if EV_MULTIPLICITY	1771	#if EV_MULTIPLICITY
1591		1772
1592	struct ev_loop *	1773	struct ev_loop *
1593	ev_loop_new (unsigned int flags)	1774	ev_loop_new (unsigned int flags)
1594	{	1775	{
1595	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));	1776	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1596		1777
1597	memset (loop, 0, sizeof (struct ev_loop));	1778	memset (EV_A, 0, sizeof (struct ev_loop));
1598
1599	loop_init (EV_A_ flags);	1779	loop_init (EV_A_ flags);
1600		1780
1601	if (ev_backend (EV_A))	1781	if (ev_backend (EV_A))
1602	return loop;	1782	return EV_A;
1603		1783
1604	return 0;	1784	return 0;
1605	}	1785	}
1606		1786
1607	void	1787	void
…		…
1614	void	1794	void
1615	ev_loop_fork (EV_P)	1795	ev_loop_fork (EV_P)
1616	{	1796	{
1617	postfork = 1; /* must be in line with ev_default_fork */	1797	postfork = 1; /* must be in line with ev_default_fork */
1618	}	1798	}
		1799	#endif /* multiplicity */
1619		1800
1620	#if EV_VERIFY	1801	#if EV_VERIFY
1621	static void noinline	1802	static void noinline
1622	verify_watcher (EV_P_ W w)	1803	verify_watcher (EV_P_ W w)
1623	{	1804	{
…		…
1651	verify_watcher (EV_A_ ws [cnt]);	1832	verify_watcher (EV_A_ ws [cnt]);
1652	}	1833	}
1653	}	1834	}
1654	#endif	1835	#endif
1655		1836
		1837	#if EV_MINIMAL < 2
1656	void	1838	void
1657	ev_loop_verify (EV_P)	1839	ev_loop_verify (EV_P)
1658	{	1840	{
1659	#if EV_VERIFY	1841	#if EV_VERIFY
1660	int i;	1842	int i;
…		…
1709	assert (checkmax >= checkcnt);	1891	assert (checkmax >= checkcnt);
1710	array_verify (EV_A_ (W *)checks, checkcnt);	1892	array_verify (EV_A_ (W *)checks, checkcnt);
1711		1893
1712	# if 0	1894	# if 0
1713	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	1895	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
1714	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)	1896	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1715	# endif
1716	#endif	1897	# endif
		1898	#endif
1717	}	1899	}
1718		1900	#endif
1719	#endif /* multiplicity */
1720		1901
1721	#if EV_MULTIPLICITY	1902	#if EV_MULTIPLICITY
1722	struct ev_loop *	1903	struct ev_loop *
1723	ev_default_loop_init (unsigned int flags)	1904	ev_default_loop_init (unsigned int flags)
1724	#else	1905	#else
…		…
1727	#endif	1908	#endif
1728	{	1909	{
1729	if (!ev_default_loop_ptr)	1910	if (!ev_default_loop_ptr)
1730	{	1911	{
1731	#if EV_MULTIPLICITY	1912	#if EV_MULTIPLICITY
1732	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1913	EV_P = ev_default_loop_ptr = &default_loop_struct;
1733	#else	1914	#else
1734	ev_default_loop_ptr = 1;	1915	ev_default_loop_ptr = 1;
1735	#endif	1916	#endif
1736		1917
1737	loop_init (EV_A_ flags);	1918	loop_init (EV_A_ flags);
…		…
1754		1935
1755	void	1936	void
1756	ev_default_destroy (void)	1937	ev_default_destroy (void)
1757	{	1938	{
1758	#if EV_MULTIPLICITY	1939	#if EV_MULTIPLICITY
1759	struct ev_loop *loop = ev_default_loop_ptr;	1940	EV_P = ev_default_loop_ptr;
1760	#endif	1941	#endif
1761		1942
1762	ev_default_loop_ptr = 0;	1943	ev_default_loop_ptr = 0;
1763		1944
1764	#ifndef _WIN32	1945	#ifndef _WIN32
…		…
1771		1952
1772	void	1953	void
1773	ev_default_fork (void)	1954	ev_default_fork (void)
1774	{	1955	{
1775	#if EV_MULTIPLICITY	1956	#if EV_MULTIPLICITY
1776	struct ev_loop *loop = ev_default_loop_ptr;	1957	EV_P = ev_default_loop_ptr;
1777	#endif	1958	#endif
1778		1959
1779	postfork = 1; /* must be in line with ev_loop_fork */	1960	postfork = 1; /* must be in line with ev_loop_fork */
1780	}	1961	}
1781		1962
…		…
1785	ev_invoke (EV_P_ void *w, int revents)	1966	ev_invoke (EV_P_ void *w, int revents)
1786	{	1967	{
1787	EV_CB_INVOKE ((W)w, revents);	1968	EV_CB_INVOKE ((W)w, revents);
1788	}	1969	}
1789		1970
1790	inline_speed void	1971	unsigned int
1791	call_pending (EV_P)	1972	ev_pending_count (EV_P)
		1973	{
		1974	int pri;
		1975	unsigned int count = 0;
		1976
		1977	for (pri = NUMPRI; pri--; )
		1978	count += pendingcnt [pri];
		1979
		1980	return count;
		1981	}
		1982
		1983	void noinline
		1984	ev_invoke_pending (EV_P)
1792	{	1985	{
1793	int pri;	1986	int pri;
1794		1987
1795	for (pri = NUMPRI; pri--; )	1988	for (pri = NUMPRI; pri--; )
1796	while (pendingcnt [pri])	1989	while (pendingcnt [pri])
…		…
2034	}	2227	}
2035		2228
2036	void	2229	void
2037	ev_loop (EV_P_ int flags)	2230	ev_loop (EV_P_ int flags)
2038	{	2231	{
		2232	#if EV_MINIMAL < 2
2039	++loop_depth;	2233	++loop_depth;
		2234	#endif
		2235
		2236	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2040		2237
2041	loop_done = EVUNLOOP_CANCEL;	2238	loop_done = EVUNLOOP_CANCEL;
2042		2239
2043	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2240	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2044		2241
2045	do	2242	do
2046	{	2243	{
2047	#if EV_VERIFY >= 2	2244	#if EV_VERIFY >= 2
2048	ev_loop_verify (EV_A);	2245	ev_loop_verify (EV_A);
…		…
2061	/* we might have forked, so queue fork handlers */	2258	/* we might have forked, so queue fork handlers */
2062	if (expect_false (postfork))	2259	if (expect_false (postfork))
2063	if (forkcnt)	2260	if (forkcnt)
2064	{	2261	{
2065	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2262	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2066	call_pending (EV_A);	2263	EV_INVOKE_PENDING;
2067	}	2264	}
2068	#endif	2265	#endif
2069		2266
2070	/* queue prepare watchers (and execute them) */	2267	/* queue prepare watchers (and execute them) */
2071	if (expect_false (preparecnt))	2268	if (expect_false (preparecnt))
2072	{	2269	{
2073	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2270	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2074	call_pending (EV_A);	2271	EV_INVOKE_PENDING;
2075	}	2272	}
		2273
		2274	if (expect_false (loop_done))
		2275	break;
2076		2276
2077	/* we might have forked, so reify kernel state if necessary */	2277	/* we might have forked, so reify kernel state if necessary */
2078	if (expect_false (postfork))	2278	if (expect_false (postfork))
2079	loop_fork (EV_A);	2279	loop_fork (EV_A);
2080		2280
…		…
2128	waittime -= sleeptime;	2328	waittime -= sleeptime;
2129	}	2329	}
2130	}	2330	}
2131	}	2331	}
2132		2332
		2333	#if EV_MINIMAL < 2
2133	++loop_count;	2334	++loop_count;
		2335	#endif
		2336	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2134	backend_poll (EV_A_ waittime);	2337	backend_poll (EV_A_ waittime);
		2338	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2135		2339
2136	/* update ev_rt_now, do magic */	2340	/* update ev_rt_now, do magic */
2137	time_update (EV_A_ waittime + sleeptime);	2341	time_update (EV_A_ waittime + sleeptime);
2138	}	2342	}
2139		2343
…		…
2150		2354
2151	/* queue check watchers, to be executed first */	2355	/* queue check watchers, to be executed first */
2152	if (expect_false (checkcnt))	2356	if (expect_false (checkcnt))
2153	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2357	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2154		2358
2155	call_pending (EV_A);	2359	EV_INVOKE_PENDING;
2156	}	2360	}
2157	while (expect_true (	2361	while (expect_true (
2158	activecnt	2362	activecnt
2159	&& !loop_done	2363	&& !loop_done
2160	&& !(flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK))	2364	&& !(flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK))
2161	));	2365	));
2162		2366
2163	if (loop_done == EVUNLOOP_ONE)	2367	if (loop_done == EVUNLOOP_ONE)
2164	loop_done = EVUNLOOP_CANCEL;	2368	loop_done = EVUNLOOP_CANCEL;
2165		2369
		2370	#if EV_MINIMAL < 2
2166	--loop_depth;	2371	--loop_depth;
		2372	#endif
2167	}	2373	}
2168		2374
2169	void	2375	void
2170	ev_unloop (EV_P_ int how)	2376	ev_unloop (EV_P_ int how)
2171	{	2377	{
…		…
2222	inline_size void	2428	inline_size void
2223	wlist_del (WL *head, WL elem)	2429	wlist_del (WL *head, WL elem)
2224	{	2430	{
2225	while (*head)	2431	while (*head)
2226	{	2432	{
2227	if (*head == elem)	2433	if (expect_true (*head == elem))
2228	{	2434	{
2229	*head = elem->next;	2435	*head = elem->next;
2230	return;	2436	break;
2231	}	2437	}
2232		2438
2233	head = &(*head)->next;	2439	head = &(*head)->next;
2234	}	2440	}
2235	}	2441	}
…		…
2303		2509
2304	ev_start (EV_A_ (W)w, 1);	2510	ev_start (EV_A_ (W)w, 1);
2305	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2511	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2306	wlist_add (&anfds[fd].head, (WL)w);	2512	wlist_add (&anfds[fd].head, (WL)w);
2307		2513
2308	fd_change (EV_A_ fd, w->events & EV__IOFDSET \| 1);	2514	fd_change (EV_A_ fd, w->events & EV__IOFDSET \| EV_ANFD_REIFY);
2309	w->events &= ~EV__IOFDSET;	2515	w->events &= ~EV__IOFDSET;
2310		2516
2311	EV_FREQUENT_CHECK;	2517	EV_FREQUENT_CHECK;
2312	}	2518	}
2313		2519
…		…
2407	}	2613	}
2408		2614
2409	EV_FREQUENT_CHECK;	2615	EV_FREQUENT_CHECK;
2410	}	2616	}
2411		2617
		2618	ev_tstamp
		2619	ev_timer_remaining (EV_P_ ev_timer *w)
		2620	{
		2621	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
		2622	}
		2623
2412	#if EV_PERIODIC_ENABLE	2624	#if EV_PERIODIC_ENABLE
2413	void noinline	2625	void noinline
2414	ev_periodic_start (EV_P_ ev_periodic *w)	2626	ev_periodic_start (EV_P_ ev_periodic *w)
2415	{	2627	{
2416	if (expect_false (ev_is_active (w)))	2628	if (expect_false (ev_is_active (w)))
…		…
2483	#endif	2695	#endif
2484		2696
2485	void noinline	2697	void noinline
2486	ev_signal_start (EV_P_ ev_signal *w)	2698	ev_signal_start (EV_P_ ev_signal *w)
2487	{	2699	{
2488	#if EV_MULTIPLICITY
2489	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2490	#endif
2491	if (expect_false (ev_is_active (w)))	2700	if (expect_false (ev_is_active (w)))
2492	return;	2701	return;
2493		2702
2494	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));	2703	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2495		2704
2496	evpipe_init (EV_A);	2705	#if EV_MULTIPLICITY
		2706	assert (("libev: a signal must not be attached to two different loops",
		2707	!signals [w->signum - 1].loop \|\| signals [w->signum - 1].loop == loop));
2497		2708
2498	EV_FREQUENT_CHECK;	2709	signals [w->signum - 1].loop = EV_A;
		2710	#endif
2499		2711
		2712	EV_FREQUENT_CHECK;
		2713
		2714	#if EV_USE_SIGNALFD
		2715	if (sigfd == -2)
2500	{	2716	{
2501	#ifndef _WIN32	2717	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK \| SFD_CLOEXEC);
2502	sigset_t full, prev;	2718	if (sigfd < 0 && errno == EINVAL)
2503	sigfillset (&full);	2719	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2504	sigprocmask (SIG_SETMASK, &full, &prev);
2505	#endif
2506		2720
2507	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);	2721	if (sigfd >= 0)
		2722	{
		2723	fd_intern (sigfd); /* doing it twice will not hurt */
2508		2724
2509	#ifndef _WIN32	2725	sigemptyset (&sigfd_set);
2510	sigprocmask (SIG_SETMASK, &prev, 0);	2726
2511	#endif	2727	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2728	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2729	ev_io_start (EV_A_ &sigfd_w);
		2730	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2731	}
2512	}	2732	}
		2733
		2734	if (sigfd >= 0)
		2735	{
		2736	/* TODO: check .head */
		2737	sigaddset (&sigfd_set, w->signum);
		2738	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2739
		2740	signalfd (sigfd, &sigfd_set, 0);
		2741	}
		2742	#endif
2513		2743
2514	ev_start (EV_A_ (W)w, 1);	2744	ev_start (EV_A_ (W)w, 1);
2515	wlist_add (&signals [w->signum - 1].head, (WL)w);	2745	wlist_add (&signals [w->signum - 1].head, (WL)w);
2516		2746
2517	if (!((WL)w)->next)	2747	if (!((WL)w)->next)
		2748	# if EV_USE_SIGNALFD
		2749	if (sigfd < 0) /TODO/
		2750	# endif
2518	{	2751	{
2519	#if _WIN32	2752	# ifdef _WIN32
		2753	evpipe_init (EV_A);
		2754
2520	signal (w->signum, ev_sighandler);	2755	signal (w->signum, ev_sighandler);
2521	#else	2756	# else
2522	struct sigaction sa;	2757	struct sigaction sa;
		2758
		2759	evpipe_init (EV_A);
		2760
2523	sa.sa_handler = ev_sighandler;	2761	sa.sa_handler = ev_sighandler;
2524	sigfillset (&sa.sa_mask);	2762	sigfillset (&sa.sa_mask);
2525	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2763	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2526	sigaction (w->signum, &sa, 0);	2764	sigaction (w->signum, &sa, 0);
		2765
		2766	sigemptyset (&sa.sa_mask);
		2767	sigaddset (&sa.sa_mask, w->signum);
		2768	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2527	#endif	2769	#endif
2528	}	2770	}
2529		2771
2530	EV_FREQUENT_CHECK;	2772	EV_FREQUENT_CHECK;
2531	}	2773	}
2532		2774
2533	void noinline	2775	void noinline
…		…
2541		2783
2542	wlist_del (&signals [w->signum - 1].head, (WL)w);	2784	wlist_del (&signals [w->signum - 1].head, (WL)w);
2543	ev_stop (EV_A_ (W)w);	2785	ev_stop (EV_A_ (W)w);
2544		2786
2545	if (!signals [w->signum - 1].head)	2787	if (!signals [w->signum - 1].head)
		2788	{
		2789	#if EV_MULTIPLICITY
		2790	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2791	#endif
		2792	#if EV_USE_SIGNALFD
		2793	if (sigfd >= 0)
		2794	{
		2795	sigset_t ss;
		2796
		2797	sigemptyset (&ss);
		2798	sigaddset (&ss, w->signum);
		2799	sigdelset (&sigfd_set, w->signum);
		2800
		2801	signalfd (sigfd, &sigfd_set, 0);
		2802	sigprocmask (SIG_UNBLOCK, &ss, 0);
		2803	}
		2804	else
		2805	#endif
2546	signal (w->signum, SIG_DFL);	2806	signal (w->signum, SIG_DFL);
		2807	}
2547		2808
2548	EV_FREQUENT_CHECK;	2809	EV_FREQUENT_CHECK;
2549	}	2810	}
2550		2811
2551	void	2812	void
…		…
2599	static void noinline	2860	static void noinline
2600	infy_add (EV_P_ ev_stat *w)	2861	infy_add (EV_P_ ev_stat *w)
2601	{	2862	{
2602	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);	2863	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);
2603		2864
2604	if (w->wd < 0)	2865	if (w->wd >= 0)
		2866	{
		2867	struct statfs sfs;
		2868
		2869	/* now local changes will be tracked by inotify, but remote changes won't */
		2870	/* unless the filesystem is known to be local, we therefore still poll */
		2871	/* also do poll on <2.6.25, but with normal frequency */
		2872
		2873	if (!fs_2625)
		2874	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		2875	else if (!statfs (w->path, &sfs)
		2876	&& (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	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
		2883	else
		2884	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2605	{	2885	}
		2886	else
		2887	{
		2888	/* can't use inotify, continue to stat */
2606	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;	2889	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2607	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2608		2890
2609	/* monitor some parent directory for speedup hints */	2891	/* if path is not there, monitor some parent directory for speedup hints */
2610	/* note that exceeding the hardcoded path limit is not a correctness issue, */	2892	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2611	/* but an efficiency issue only */	2893	/* but an efficiency issue only */
2612	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)	2894	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)
2613	{	2895	{
2614	char path [4096];	2896	char path [4096];
…		…
2630	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));	2912	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));
2631	}	2913	}
2632	}	2914	}
2633		2915
2634	if (w->wd >= 0)	2916	if (w->wd >= 0)
2635	{
2636	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2917	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2637		2918
2638	/* now local changes will be tracked by inotify, but remote changes won't */	2919	/* now re-arm timer, if required */
2639	/* unless the filesystem it known to be local, we therefore still poll */	2920	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2640	/* also do poll on <2.6.25, but with normal frequency */
2641	struct statfs sfs;
2642
2643	if (fs_2625 && !statfs (w->path, &sfs))
2644	if (sfs.f_type == 0x1373 /* devfs */
2645	\|\| sfs.f_type == 0xEF53 /* ext2/3 */
2646	\|\| sfs.f_type == 0x3153464a /* jfs */
2647	\|\| sfs.f_type == 0x52654973 /* reiser3 */
2648	\|\| sfs.f_type == 0x01021994 /* tempfs */
2649	\|\| sfs.f_type == 0x58465342 /* xfs */)
2650	return;
2651
2652	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2653	ev_timer_again (EV_A_ &w->timer);	2921	ev_timer_again (EV_A_ &w->timer);
2654	}	2922	if (ev_is_active (&w->timer)) ev_unref (EV_A);
2655	}	2923	}
2656		2924
2657	static void noinline	2925	static void noinline
2658	infy_del (EV_P_ ev_stat *w)	2926	infy_del (EV_P_ ev_stat *w)
2659	{	2927	{
…		…
2735	return;	3003	return;
2736		3004
2737	fs_2625 = 1;	3005	fs_2625 = 1;
2738	}	3006	}
2739		3007
		3008	inline_size int
		3009	infy_newfd (void)
		3010	{
		3011	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3012	int fd = inotify_init1 (IN_CLOEXEC \| IN_NONBLOCK);
		3013	if (fd >= 0)
		3014	return fd;
		3015	#endif
		3016	return inotify_init ();
		3017	}
		3018
2740	inline_size void	3019	inline_size void
2741	infy_init (EV_P)	3020	infy_init (EV_P)
2742	{	3021	{
2743	if (fs_fd != -2)	3022	if (fs_fd != -2)
2744	return;	3023	return;
2745		3024
2746	fs_fd = -1;	3025	fs_fd = -1;
2747		3026
2748	check_2625 (EV_A);	3027	check_2625 (EV_A);
2749		3028
2750	fs_fd = inotify_init ();	3029	fs_fd = infy_newfd ();
2751		3030
2752	if (fs_fd >= 0)	3031	if (fs_fd >= 0)
2753	{	3032	{
		3033	fd_intern (fs_fd);
2754	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3034	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2755	ev_set_priority (&fs_w, EV_MAXPRI);	3035	ev_set_priority (&fs_w, EV_MAXPRI);
2756	ev_io_start (EV_A_ &fs_w);	3036	ev_io_start (EV_A_ &fs_w);
		3037	ev_unref (EV_A);
2757	}	3038	}
2758	}	3039	}
2759		3040
2760	inline_size void	3041	inline_size void
2761	infy_fork (EV_P)	3042	infy_fork (EV_P)
…		…
2763	int slot;	3044	int slot;
2764		3045
2765	if (fs_fd < 0)	3046	if (fs_fd < 0)
2766	return;	3047	return;
2767		3048
		3049	ev_ref (EV_A);
		3050	ev_io_stop (EV_A_ &fs_w);
2768	close (fs_fd);	3051	close (fs_fd);
2769	fs_fd = inotify_init ();	3052	fs_fd = infy_newfd ();
		3053
		3054	if (fs_fd >= 0)
		3055	{
		3056	fd_intern (fs_fd);
		3057	ev_io_set (&fs_w, fs_fd, EV_READ);
		3058	ev_io_start (EV_A_ &fs_w);
		3059	ev_unref (EV_A);
		3060	}
2770		3061
2771	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3062	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2772	{	3063	{
2773	WL w_ = fs_hash [slot].head;	3064	WL w_ = fs_hash [slot].head;
2774	fs_hash [slot].head = 0;	3065	fs_hash [slot].head = 0;
…		…
2781	w->wd = -1;	3072	w->wd = -1;
2782		3073
2783	if (fs_fd >= 0)	3074	if (fs_fd >= 0)
2784	infy_add (EV_A_ w); /* re-add, no matter what */	3075	infy_add (EV_A_ w); /* re-add, no matter what */
2785	else	3076	else
		3077	{
		3078	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3079	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2786	ev_timer_again (EV_A_ &w->timer);	3080	ev_timer_again (EV_A_ &w->timer);
		3081	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		3082	}
2787	}	3083	}
2788	}	3084	}
2789	}	3085	}
2790		3086
2791	#endif	3087	#endif
…		…
2808	static void noinline	3104	static void noinline
2809	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	3105	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2810	{	3106	{
2811	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));	3107	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
2812		3108
2813	/* we copy this here each the time so that */	3109	ev_statdata prev = w->attr;
2814	/* prev has the old value when the callback gets invoked */
2815	w->prev = w->attr;
2816	ev_stat_stat (EV_A_ w);	3110	ev_stat_stat (EV_A_ w);
2817		3111
2818	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */	3112	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2819	if (	3113	if (
2820	w->prev.st_dev != w->attr.st_dev	3114	prev.st_dev != w->attr.st_dev
2821	\|\| w->prev.st_ino != w->attr.st_ino	3115	\|\| prev.st_ino != w->attr.st_ino
2822	\|\| w->prev.st_mode != w->attr.st_mode	3116	\|\| prev.st_mode != w->attr.st_mode
2823	\|\| w->prev.st_nlink != w->attr.st_nlink	3117	\|\| prev.st_nlink != w->attr.st_nlink
2824	\|\| w->prev.st_uid != w->attr.st_uid	3118	\|\| prev.st_uid != w->attr.st_uid
2825	\|\| w->prev.st_gid != w->attr.st_gid	3119	\|\| prev.st_gid != w->attr.st_gid
2826	\|\| w->prev.st_rdev != w->attr.st_rdev	3120	\|\| prev.st_rdev != w->attr.st_rdev
2827	\|\| w->prev.st_size != w->attr.st_size	3121	\|\| prev.st_size != w->attr.st_size
2828	\|\| w->prev.st_atime != w->attr.st_atime	3122	\|\| prev.st_atime != w->attr.st_atime
2829	\|\| w->prev.st_mtime != w->attr.st_mtime	3123	\|\| prev.st_mtime != w->attr.st_mtime
2830	\|\| w->prev.st_ctime != w->attr.st_ctime	3124	\|\| prev.st_ctime != w->attr.st_ctime
2831	) {	3125	) {
		3126	/* we only update w->prev on actual differences */
		3127	/* in case we test more often than invoke the callback, */
		3128	/* to ensure that prev is always different to attr */
		3129	w->prev = prev;
		3130
2832	#if EV_USE_INOTIFY	3131	#if EV_USE_INOTIFY
2833	if (fs_fd >= 0)	3132	if (fs_fd >= 0)
2834	{	3133	{
2835	infy_del (EV_A_ w);	3134	infy_del (EV_A_ w);
2836	infy_add (EV_A_ w);	3135	infy_add (EV_A_ w);
…		…
2861		3160
2862	if (fs_fd >= 0)	3161	if (fs_fd >= 0)
2863	infy_add (EV_A_ w);	3162	infy_add (EV_A_ w);
2864	else	3163	else
2865	#endif	3164	#endif
		3165	{
2866	ev_timer_again (EV_A_ &w->timer);	3166	ev_timer_again (EV_A_ &w->timer);
		3167	ev_unref (EV_A);
		3168	}
2867		3169
2868	ev_start (EV_A_ (W)w, 1);	3170	ev_start (EV_A_ (W)w, 1);
2869		3171
2870	EV_FREQUENT_CHECK;	3172	EV_FREQUENT_CHECK;
2871	}	3173	}
…		…
2880	EV_FREQUENT_CHECK;	3182	EV_FREQUENT_CHECK;
2881		3183
2882	#if EV_USE_INOTIFY	3184	#if EV_USE_INOTIFY
2883	infy_del (EV_A_ w);	3185	infy_del (EV_A_ w);
2884	#endif	3186	#endif
		3187
		3188	if (ev_is_active (&w->timer))
		3189	{
		3190	ev_ref (EV_A);
2885	ev_timer_stop (EV_A_ &w->timer);	3191	ev_timer_stop (EV_A_ &w->timer);
		3192	}
2886		3193
2887	ev_stop (EV_A_ (W)w);	3194	ev_stop (EV_A_ (W)w);
2888		3195
2889	EV_FREQUENT_CHECK;	3196	EV_FREQUENT_CHECK;
2890	}	3197	}
…		…
3031	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3338	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3032	{	3339	{
3033	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));	3340	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
3034		3341
3035	{	3342	{
3036	struct ev_loop *loop = w->other;	3343	EV_P = w->other;
3037		3344
3038	while (fdchangecnt)	3345	while (fdchangecnt)
3039	{	3346	{
3040	fd_reify (EV_A);	3347	fd_reify (EV_A);
3041	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3348	ev_loop (EV_A_ EVLOOP_NONBLOCK);
…		…
3049	ev_embed w = (ev_embed )(((char *)fork_w) - offsetof (ev_embed, fork));	3356	ev_embed w = (ev_embed )(((char *)fork_w) - offsetof (ev_embed, fork));
3050		3357
3051	ev_embed_stop (EV_A_ w);	3358	ev_embed_stop (EV_A_ w);
3052		3359
3053	{	3360	{
3054	struct ev_loop *loop = w->other;	3361	EV_P = w->other;
3055		3362
3056	ev_loop_fork (EV_A);	3363	ev_loop_fork (EV_A);
3057	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3364	ev_loop (EV_A_ EVLOOP_NONBLOCK);
3058	}	3365	}
3059		3366
…		…
3073	{	3380	{
3074	if (expect_false (ev_is_active (w)))	3381	if (expect_false (ev_is_active (w)))
3075	return;	3382	return;
3076		3383
3077	{	3384	{
3078	struct ev_loop *loop = w->other;	3385	EV_P = w->other;
3079	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3386	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3080	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3387	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3081	}	3388	}
3082		3389
3083	EV_FREQUENT_CHECK;	3390	EV_FREQUENT_CHECK;
…		…
3195		3502
3196	void	3503	void
3197	ev_async_send (EV_P_ ev_async *w)	3504	ev_async_send (EV_P_ ev_async *w)
3198	{	3505	{
3199	w->sent = 1;	3506	w->sent = 1;
3200	evpipe_write (EV_A_ &gotasync);	3507	evpipe_write (EV_A_ &async_pending);
3201	}	3508	}
3202	#endif	3509	#endif
3203		3510
3204	/*****************************************************************************/	3511	/*****************************************************************************/
3205		3512
…		…
3354	if (types & EV_CHECK)	3661	if (types & EV_CHECK)
3355	for (i = checkcnt; i--; )	3662	for (i = checkcnt; i--; )
3356	cb (EV_A_ EV_CHECK, checks [i]);	3663	cb (EV_A_ EV_CHECK, checks [i]);
3357		3664
3358	if (types & EV_SIGNAL)	3665	if (types & EV_SIGNAL)
3359	for (i = 0; i < signalmax; ++i)	3666	for (i = 0; i < EV_NSIG - 1; ++i)
3360	for (wl = signals [i].head; wl; )	3667	for (wl = signals [i].head; wl; )
3361	{	3668	{
3362	wn = wl->next;	3669	wn = wl->next;
3363	cb (EV_A_ EV_SIGNAL, wl);	3670	cb (EV_A_ EV_SIGNAL, wl);
3364	wl = wn;	3671	wl = wn;

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Comparing libev/ev.c (file contents): Revision 1.295 by root, Wed Jul 8 04:29:31 2009 UTC vs. Revision 1.323 by root, Wed Jan 13 12:44:33 2010 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.295 by root, Wed Jul 8 04:29:31 2009 UTC vs.
Revision 1.323 by root, Wed Jan 13 12:44:33 2010 UTC