[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 1.316 by root, Fri Sep 18 21:02:12 2009 UTC

…		…
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
…		…
178	# endif	186	# endif
179	#endif	187	#endif
180		188
181	/* this block tries to deduce configuration from header-defined symbols and defaults */	189	/* this block tries to deduce configuration from header-defined symbols and defaults */
182		190
		191	/* try to deduce the maximum number of signals on this platform */
		192	#if defined (EV_NSIG)
		193	/* use what's provided */
		194	#elif defined (NSIG)
		195	# define EV_NSIG (NSIG)
		196	#elif defined(_NSIG)
		197	# define EV_NSIG (_NSIG)
		198	#elif defined (SIGMAX)
		199	# define EV_NSIG (SIGMAX+1)
		200	#elif defined (SIG_MAX)
		201	# define EV_NSIG (SIG_MAX+1)
		202	#elif defined (_SIG_MAX)
		203	# define EV_NSIG (_SIG_MAX+1)
		204	#elif defined (MAXSIG)
		205	# define EV_NSIG (MAXSIG+1)
		206	#elif defined (MAX_SIG)
		207	# define EV_NSIG (MAX_SIG+1)
		208	#elif defined (SIGARRAYSIZE)
		209	# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
		210	#elif defined (_sys_nsig)
		211	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
		212	#else
		213	# error "unable to find value for NSIG, please report"
		214	/* to make it compile regardless, just remove the above line */
		215	# define EV_NSIG 65
		216	#endif
		217
183	#ifndef EV_USE_CLOCK_SYSCALL	218	#ifndef EV_USE_CLOCK_SYSCALL
184	# if __linux && __GLIBC__ >= 2	219	# if __linux && __GLIBC__ >= 2
185	# define EV_USE_CLOCK_SYSCALL 1	220	# define EV_USE_CLOCK_SYSCALL 1
186	# else	221	# else
187	# define EV_USE_CLOCK_SYSCALL 0	222	# define EV_USE_CLOCK_SYSCALL 0
…		…
263	#ifndef EV_USE_EVENTFD	298	#ifndef EV_USE_EVENTFD
264	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))	299	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265	# define EV_USE_EVENTFD 1	300	# define EV_USE_EVENTFD 1
266	# else	301	# else
267	# define EV_USE_EVENTFD 0	302	# define EV_USE_EVENTFD 0
		303	# endif
		304	#endif
		305
		306	#ifndef EV_USE_SIGNALFD
		307	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		308	# define EV_USE_SIGNALFD 1
		309	# else
		310	# define EV_USE_SIGNALFD 0
268	# endif	311	# endif
269	#endif	312	#endif
270		313
271	#if 0 /* debugging */	314	#if 0 /* debugging */
272	# define EV_VERIFY 3	315	# define EV_VERIFY 3
…		…
339	#endif	382	#endif
340		383
341	#if EV_USE_EVENTFD	384	#if EV_USE_EVENTFD
342	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	385	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
343	# include <stdint.h>	386	# include <stdint.h>
		387	# ifndef EFD_NONBLOCK
		388	# define EFD_NONBLOCK O_NONBLOCK
		389	# endif
		390	# ifndef EFD_CLOEXEC
		391	# ifdef O_CLOEXEC
		392	# define EFD_CLOEXEC O_CLOEXEC
		393	# else
		394	# define EFD_CLOEXEC 02000000
		395	# endif
		396	# endif
344	# ifdef __cplusplus	397	# ifdef __cplusplus
345	extern "C" {	398	extern "C" {
346	# endif	399	# endif
347	int eventfd (unsigned int initval, int flags);	400	int eventfd (unsigned int initval, int flags);
348	# ifdef __cplusplus	401	# ifdef __cplusplus
349	}	402	}
350	# endif	403	# endif
351	#endif	404	#endif
		405
		406	#if EV_USE_SIGNALFD
		407	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		408	# include <stdint.h>
		409	# ifndef SFD_NONBLOCK
		410	# define SFD_NONBLOCK O_NONBLOCK
		411	# endif
		412	# ifndef SFD_CLOEXEC
		413	# ifdef O_CLOEXEC
		414	# define SFD_CLOEXEC O_CLOEXEC
		415	# else
		416	# define SFD_CLOEXEC 02000000
		417	# endif
		418	# endif
		419	# ifdef __cplusplus
		420	extern "C" {
		421	# endif
		422	int signalfd (int fd, const sigset_t *mask, int flags);
		423
		424	struct signalfd_siginfo
		425	{
		426	uint32_t ssi_signo;
		427	char pad[128 - sizeof (uint32_t)];
		428	};
		429	# ifdef __cplusplus
		430	}
		431	# endif
		432	#endif
		433
352		434
353	/**/	435	/**/
354		436
355	#if EV_VERIFY >= 3	437	#if EV_VERIFY >= 3
356	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)	438	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
…		…
368	*/	450	*/
369	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	451	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
370		452
371	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	453	#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) */	454	#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		455
375	#if __GNUC__ >= 4	456	#if __GNUC__ >= 4
376	# define expect(expr,value) __builtin_expect ((expr),(value))	457	# define expect(expr,value) __builtin_expect ((expr),(value))
377	# define noinline __attribute__ ((noinline))	458	# define noinline __attribute__ ((noinline))
378	#else	459	#else
…		…
419		500
420	#if EV_USE_MONOTONIC	501	#if EV_USE_MONOTONIC
421	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	502	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
422	#endif	503	#endif
423		504
		505	#ifndef EV_FD_TO_WIN32_HANDLE
		506	# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		507	#endif
		508	#ifndef EV_WIN32_HANDLE_TO_FD
		509	# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0)
		510	#endif
		511	#ifndef EV_WIN32_CLOSE_FD
		512	# define EV_WIN32_CLOSE_FD(fd) close (fd)
		513	#endif
		514
424	#ifdef _WIN32	515	#ifdef _WIN32
425	# include "ev_win32.c"	516	# include "ev_win32.c"
426	#endif	517	#endif
427		518
428	/*****************************************************************************/	519	/*****************************************************************************/
…		…
490	#define ev_malloc(size) ev_realloc (0, (size))	581	#define ev_malloc(size) ev_realloc (0, (size))
491	#define ev_free(ptr) ev_realloc ((ptr), 0)	582	#define ev_free(ptr) ev_realloc ((ptr), 0)
492		583
493	/*****************************************************************************/	584	/*****************************************************************************/
494		585
		586	/* set in reify when reification needed */
		587	#define EV_ANFD_REIFY 1
		588
495	/* file descriptor info structure */	589	/* file descriptor info structure */
496	typedef struct	590	typedef struct
497	{	591	{
498	WL head;	592	WL head;
499	unsigned char events; /* the events watched for */	593	unsigned char events; /* the events watched for */
500	unsigned char reify; /* flag set when this ANFD needs reification */	594	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 */	595	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
502	unsigned char unused;	596	unsigned char unused;
503	#if EV_USE_EPOLL	597	#if EV_USE_EPOLL
504	unsigned int egen; /* generation counter to counter epoll bugs */	598	unsigned int egen; /* generation counter to counter epoll bugs */
505	#endif	599	#endif
…		…
567		661
568	static int ev_default_loop_ptr;	662	static int ev_default_loop_ptr;
569		663
570	#endif	664	#endif
571		665
		666	#if EV_MINIMAL < 2
		667	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		668	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		669	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		670	#else
		671	# define EV_RELEASE_CB (void)0
		672	# define EV_ACQUIRE_CB (void)0
		673	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		674	#endif
		675
		676	#define EVUNLOOP_RECURSE 0x80
		677
572	/*****************************************************************************/	678	/*****************************************************************************/
573		679
574	#ifndef EV_HAVE_EV_TIME	680	#ifndef EV_HAVE_EV_TIME
575	ev_tstamp	681	ev_tstamp
576	ev_time (void)	682	ev_time (void)
…		…
632		738
633	tv.tv_sec = (time_t)delay;	739	tv.tv_sec = (time_t)delay;
634	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	740	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
635		741
636	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */	742	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
637	/* somehting not guaranteed by newer posix versions, but guaranteed */	743	/* something not guaranteed by newer posix versions, but guaranteed */
638	/* by older ones */	744	/* by older ones */
639	select (0, 0, 0, 0, &tv);	745	select (0, 0, 0, 0, &tv);
640	#endif	746	#endif
641	}	747	}
642	}	748	}
…		…
750	}	856	}
751		857
752	/*****************************************************************************/	858	/*****************************************************************************/
753		859
754	inline_speed void	860	inline_speed void
755	fd_event (EV_P_ int fd, int revents)	861	fd_event_nc (EV_P_ int fd, int revents)
756	{	862	{
757	ANFD *anfd = anfds + fd;	863	ANFD *anfd = anfds + fd;
758	ev_io *w;	864	ev_io *w;
759		865
760	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)	866	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
…		…
764	if (ev)	870	if (ev)
765	ev_feed_event (EV_A_ (W)w, ev);	871	ev_feed_event (EV_A_ (W)w, ev);
766	}	872	}
767	}	873	}
768		874
		875	/* do not submit kernel events for fds that have reify set */
		876	/* because that means they changed while we were polling for new events */
		877	inline_speed void
		878	fd_event (EV_P_ int fd, int revents)
		879	{
		880	ANFD *anfd = anfds + fd;
		881
		882	if (expect_true (!anfd->reify))
		883	fd_event_nc (EV_A_ fd, revents);
		884	}
		885
769	void	886	void
770	ev_feed_fd_event (EV_P_ int fd, int revents)	887	ev_feed_fd_event (EV_P_ int fd, int revents)
771	{	888	{
772	if (fd >= 0 && fd < anfdmax)	889	if (fd >= 0 && fd < anfdmax)
773	fd_event (EV_A_ fd, revents);	890	fd_event_nc (EV_A_ fd, revents);
774	}	891	}
775		892
776	/* make sure the external fd watch events are in-sync */	893	/* make sure the external fd watch events are in-sync */
777	/* with the kernel/libev internal state */	894	/* with the kernel/libev internal state */
778	inline_size void	895	inline_size void
…		…
793		910
794	#if EV_SELECT_IS_WINSOCKET	911	#if EV_SELECT_IS_WINSOCKET
795	if (events)	912	if (events)
796	{	913	{
797	unsigned long arg;	914	unsigned long arg;
798	#ifdef EV_FD_TO_WIN32_HANDLE
799	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	915	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));	916	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
804	}	917	}
805	#endif	918	#endif
806		919
807	{	920	{
…		…
878		991
879	for (fd = anfdmax; fd--; )	992	for (fd = anfdmax; fd--; )
880	if (anfds [fd].events)	993	if (anfds [fd].events)
881	{	994	{
882	fd_kill (EV_A_ fd);	995	fd_kill (EV_A_ fd);
883	return;	996	break;
884	}	997	}
885	}	998	}
886		999
887	/* usually called after fork if backend needs to re-arm all fds from scratch */	1000	/* usually called after fork if backend needs to re-arm all fds from scratch */
888	static void noinline	1001	static void noinline
…		…
893	for (fd = 0; fd < anfdmax; ++fd)	1006	for (fd = 0; fd < anfdmax; ++fd)
894	if (anfds [fd].events)	1007	if (anfds [fd].events)
895	{	1008	{
896	anfds [fd].events = 0;	1009	anfds [fd].events = 0;
897	anfds [fd].emask = 0;	1010	anfds [fd].emask = 0;
898	fd_change (EV_A_ fd, EV__IOFDSET \| 1);	1011	fd_change (EV_A_ fd, EV__IOFDSET \| EV_ANFD_REIFY);
899	}	1012	}
900	}	1013	}
901		1014
902	/*****************************************************************************/	1015	/*****************************************************************************/
903		1016
…		…
978		1091
979	for (;;)	1092	for (;;)
980	{	1093	{
981	int c = k << 1;	1094	int c = k << 1;
982		1095
983	if (c > N + HEAP0 - 1)	1096	if (c >= N + HEAP0)
984	break;	1097	break;
985		1098
986	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])	1099	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
987	? 1 : 0;	1100	? 1 : 0;
988		1101
…		…
1024		1137
1025	/* move an element suitably so it is in a correct place */	1138	/* move an element suitably so it is in a correct place */
1026	inline_size void	1139	inline_size void
1027	adjustheap (ANHE *heap, int N, int k)	1140	adjustheap (ANHE *heap, int N, int k)
1028	{	1141	{
1029	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1142	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1030	upheap (heap, k);	1143	upheap (heap, k);
1031	else	1144	else
1032	downheap (heap, N, k);	1145	downheap (heap, N, k);
1033	}	1146	}
1034		1147
…		…
1047	/*****************************************************************************/	1160	/*****************************************************************************/
1048		1161
1049	/* associate signal watchers to a signal signal */	1162	/* associate signal watchers to a signal signal */
1050	typedef struct	1163	typedef struct
1051	{	1164	{
		1165	EV_ATOMIC_T pending;
		1166	#if EV_MULTIPLICITY
		1167	EV_P;
		1168	#endif
1052	WL head;	1169	WL head;
1053	EV_ATOMIC_T gotsig;
1054	} ANSIG;	1170	} ANSIG;
1055		1171
1056	static ANSIG *signals;	1172	static ANSIG signals [EV_NSIG - 1];
1057	static int signalmax;
1058
1059	static EV_ATOMIC_T gotsig;
1060		1173
1061	/*****************************************************************************/	1174	/*****************************************************************************/
1062		1175
1063	/* used to prepare libev internal fd's */	1176	/* used to prepare libev internal fd's */
1064	/* this is not fork-safe */	1177	/* this is not fork-safe */
…		…
1078	evpipe_init (EV_P)	1191	evpipe_init (EV_P)
1079	{	1192	{
1080	if (!ev_is_active (&pipe_w))	1193	if (!ev_is_active (&pipe_w))
1081	{	1194	{
1082	#if EV_USE_EVENTFD	1195	#if EV_USE_EVENTFD
		1196	evfd = eventfd (0, EFD_NONBLOCK \| EFD_CLOEXEC);
		1197	if (evfd < 0 && errno == EINVAL)
1083	if ((evfd = eventfd (0, 0)) >= 0)	1198	evfd = eventfd (0, 0);
		1199
		1200	if (evfd >= 0)
1084	{	1201	{
1085	evpipe [0] = -1;	1202	evpipe [0] = -1;
1086	fd_intern (evfd);	1203	fd_intern (evfd); /* doing it twice doesn't hurt */
1087	ev_io_set (&pipe_w, evfd, EV_READ);	1204	ev_io_set (&pipe_w, evfd, EV_READ);
1088	}	1205	}
1089	else	1206	else
1090	#endif	1207	#endif
1091	{	1208	{
…		…
1128	/* called whenever the libev signal pipe */	1245	/* called whenever the libev signal pipe */
1129	/* got some events (signal, async) */	1246	/* got some events (signal, async) */
1130	static void	1247	static void
1131	pipecb (EV_P_ ev_io *iow, int revents)	1248	pipecb (EV_P_ ev_io *iow, int revents)
1132	{	1249	{
		1250	int i;
		1251
1133	#if EV_USE_EVENTFD	1252	#if EV_USE_EVENTFD
1134	if (evfd >= 0)	1253	if (evfd >= 0)
1135	{	1254	{
1136	uint64_t counter;	1255	uint64_t counter;
1137	read (evfd, &counter, sizeof (uint64_t));	1256	read (evfd, &counter, sizeof (uint64_t));
…		…
1141	{	1260	{
1142	char dummy;	1261	char dummy;
1143	read (evpipe [0], &dummy, 1);	1262	read (evpipe [0], &dummy, 1);
1144	}	1263	}
1145		1264
1146	if (gotsig && ev_is_default_loop (EV_A))	1265	if (sig_pending)
1147	{	1266	{
1148	int signum;	1267	sig_pending = 0;
1149	gotsig = 0;
1150		1268
1151	for (signum = signalmax; signum--; )	1269	for (i = EV_NSIG - 1; i--; )
1152	if (signals [signum].gotsig)	1270	if (expect_false (signals [i].pending))
1153	ev_feed_signal_event (EV_A_ signum + 1);	1271	ev_feed_signal_event (EV_A_ i + 1);
1154	}	1272	}
1155		1273
1156	#if EV_ASYNC_ENABLE	1274	#if EV_ASYNC_ENABLE
1157	if (gotasync)	1275	if (async_pending)
1158	{	1276	{
1159	int i;	1277	async_pending = 0;
1160	gotasync = 0;
1161		1278
1162	for (i = asynccnt; i--; )	1279	for (i = asynccnt; i--; )
1163	if (asyncs [i]->sent)	1280	if (asyncs [i]->sent)
1164	{	1281	{
1165	asyncs [i]->sent = 0;	1282	asyncs [i]->sent = 0;
…		…
1173		1290
1174	static void	1291	static void
1175	ev_sighandler (int signum)	1292	ev_sighandler (int signum)
1176	{	1293	{
1177	#if EV_MULTIPLICITY	1294	#if EV_MULTIPLICITY
1178	struct ev_loop *loop = &default_loop_struct;	1295	EV_P = signals [signum - 1].loop;
1179	#endif	1296	#endif
1180		1297
1181	#if _WIN32	1298	#if _WIN32
1182	signal (signum, ev_sighandler);	1299	signal (signum, ev_sighandler);
1183	#endif	1300	#endif
1184		1301
1185	signals [signum - 1].gotsig = 1;	1302	signals [signum - 1].pending = 1;
1186	evpipe_write (EV_A_ &gotsig);	1303	evpipe_write (EV_A_ &sig_pending);
1187	}	1304	}
1188		1305
1189	void noinline	1306	void noinline
1190	ev_feed_signal_event (EV_P_ int signum)	1307	ev_feed_signal_event (EV_P_ int signum)
1191	{	1308	{
1192	WL w;	1309	WL w;
1193		1310
		1311	if (expect_false (signum <= 0 \|\| signum > EV_NSIG))
		1312	return;
		1313
		1314	--signum;
		1315
1194	#if EV_MULTIPLICITY	1316	#if EV_MULTIPLICITY
1195	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1317	/* it is permissible to try to feed a signal to the wrong loop */
1196	#endif	1318	/* or, likely more useful, feeding a signal nobody is waiting for */
1197		1319
1198	--signum;	1320	if (expect_false (signals [signum].loop != EV_A))
1199
1200	if (signum < 0 \|\| signum >= signalmax)
1201	return;	1321	return;
		1322	#endif
1202		1323
1203	signals [signum].gotsig = 0;	1324	signals [signum].pending = 0;
1204		1325
1205	for (w = signals [signum].head; w; w = w->next)	1326	for (w = signals [signum].head; w; w = w->next)
1206	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1327	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1207	}	1328	}
		1329
		1330	#if EV_USE_SIGNALFD
		1331	static void
		1332	sigfdcb (EV_P_ ev_io *iow, int revents)
		1333	{
		1334	struct signalfd_siginfo si[2], sip; / these structs are big */
		1335
		1336	for (;;)
		1337	{
		1338	ssize_t res = read (sigfd, si, sizeof (si));
		1339
		1340	/* not ISO-C, as res might be -1, but works with SuS */
		1341	for (sip = si; (char )sip < (char )si + res; ++sip)
		1342	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1343
		1344	if (res < (ssize_t)sizeof (si))
		1345	break;
		1346	}
		1347	}
		1348	#endif
1208		1349
1209	/*****************************************************************************/	1350	/*****************************************************************************/
1210		1351
1211	static WL childs [EV_PID_HASHSIZE];	1352	static WL childs [EV_PID_HASHSIZE];
1212		1353
…		…
1357	ev_backend (EV_P)	1498	ev_backend (EV_P)
1358	{	1499	{
1359	return backend;	1500	return backend;
1360	}	1501	}
1361		1502
		1503	#if EV_MINIMAL < 2
1362	unsigned int	1504	unsigned int
1363	ev_loop_count (EV_P)	1505	ev_loop_count (EV_P)
1364	{	1506	{
1365	return loop_count;	1507	return loop_count;
1366	}	1508	}
…		…
1380	void	1522	void
1381	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1523	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1382	{	1524	{
1383	timeout_blocktime = interval;	1525	timeout_blocktime = interval;
1384	}	1526	}
		1527
		1528	void
		1529	ev_set_userdata (EV_P_ void *data)
		1530	{
		1531	userdata = data;
		1532	}
		1533
		1534	void *
		1535	ev_userdata (EV_P)
		1536	{
		1537	return userdata;
		1538	}
		1539
		1540	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1541	{
		1542	invoke_cb = invoke_pending_cb;
		1543	}
		1544
		1545	void ev_set_loop_release_cb (EV_P_ void (release)(EV_P), void (acquire)(EV_P))
		1546	{
		1547	release_cb = release;
		1548	acquire_cb = acquire;
		1549	}
		1550	#endif
1385		1551
1386	/* initialise a loop structure, must be zero-initialised */	1552	/* initialise a loop structure, must be zero-initialised */
1387	static void noinline	1553	static void noinline
1388	loop_init (EV_P_ unsigned int flags)	1554	loop_init (EV_P_ unsigned int flags)
1389	{	1555	{
…		…
1407	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1573	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1408	have_monotonic = 1;	1574	have_monotonic = 1;
1409	}	1575	}
1410	#endif	1576	#endif
1411		1577
		1578	/* pid check not overridable via env */
		1579	#ifndef _WIN32
		1580	if (flags & EVFLAG_FORKCHECK)
		1581	curpid = getpid ();
		1582	#endif
		1583
		1584	if (!(flags & EVFLAG_NOENV)
		1585	&& !enable_secure ()
		1586	&& getenv ("LIBEV_FLAGS"))
		1587	flags = atoi (getenv ("LIBEV_FLAGS"));
		1588
1412	ev_rt_now = ev_time ();	1589	ev_rt_now = ev_time ();
1413	mn_now = get_clock ();	1590	mn_now = get_clock ();
1414	now_floor = mn_now;	1591	now_floor = mn_now;
1415	rtmn_diff = ev_rt_now - mn_now;	1592	rtmn_diff = ev_rt_now - mn_now;
		1593	#if EV_MINIMAL < 2
		1594	invoke_cb = ev_invoke_pending;
		1595	#endif
1416		1596
1417	io_blocktime = 0.;	1597	io_blocktime = 0.;
1418	timeout_blocktime = 0.;	1598	timeout_blocktime = 0.;
1419	backend = 0;	1599	backend = 0;
1420	backend_fd = -1;	1600	backend_fd = -1;
1421	gotasync = 0;	1601	sig_pending = 0;
		1602	#if EV_ASYNC_ENABLE
		1603	async_pending = 0;
		1604	#endif
1422	#if EV_USE_INOTIFY	1605	#if EV_USE_INOTIFY
1423	fs_fd = -2;	1606	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1424	#endif	1607	#endif
1425		1608	#if EV_USE_SIGNALFD
1426	/* pid check not overridable via env */	1609	sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2;
1427	#ifndef _WIN32
1428	if (flags & EVFLAG_FORKCHECK)
1429	curpid = getpid ();
1430	#endif	1610	#endif
1431
1432	if (!(flags & EVFLAG_NOENV)
1433	&& !enable_secure ()
1434	&& getenv ("LIBEV_FLAGS"))
1435	flags = atoi (getenv ("LIBEV_FLAGS"));
1436		1611
1437	if (!(flags & 0x0000ffffU))	1612	if (!(flags & 0x0000ffffU))
1438	flags \|= ev_recommended_backends ();	1613	flags \|= ev_recommended_backends ();
1439		1614
1440	#if EV_USE_PORT	1615	#if EV_USE_PORT
…		…
1466	{	1641	{
1467	int i;	1642	int i;
1468		1643
1469	if (ev_is_active (&pipe_w))	1644	if (ev_is_active (&pipe_w))
1470	{	1645	{
1471	ev_ref (EV_A); /* signal watcher */	1646	/ev_ref (EV_A);/
1472	ev_io_stop (EV_A_ &pipe_w);	1647	/ev_io_stop (EV_A_ &pipe_w);/
1473		1648
1474	#if EV_USE_EVENTFD	1649	#if EV_USE_EVENTFD
1475	if (evfd >= 0)	1650	if (evfd >= 0)
1476	close (evfd);	1651	close (evfd);
1477	#endif	1652	#endif
1478		1653
1479	if (evpipe [0] >= 0)	1654	if (evpipe [0] >= 0)
1480	{	1655	{
1481	close (evpipe [0]);	1656	EV_WIN32_CLOSE_FD (evpipe [0]);
1482	close (evpipe [1]);	1657	EV_WIN32_CLOSE_FD (evpipe [1]);
1483	}	1658	}
1484	}	1659	}
		1660
		1661	#if EV_USE_SIGNALFD
		1662	if (ev_is_active (&sigfd_w))
		1663	{
		1664	/ev_ref (EV_A);/
		1665	/ev_io_stop (EV_A_ &sigfd_w);/
		1666
		1667	close (sigfd);
		1668	}
		1669	#endif
1485		1670
1486	#if EV_USE_INOTIFY	1671	#if EV_USE_INOTIFY
1487	if (fs_fd >= 0)	1672	if (fs_fd >= 0)
1488	close (fs_fd);	1673	close (fs_fd);
1489	#endif	1674	#endif
…		…
1513	#if EV_IDLE_ENABLE	1698	#if EV_IDLE_ENABLE
1514	array_free (idle, [i]);	1699	array_free (idle, [i]);
1515	#endif	1700	#endif
1516	}	1701	}
1517		1702
1518	ev_free (anfds); anfdmax = 0;	1703	ev_free (anfds); anfds = 0; anfdmax = 0;
1519		1704
1520	/* have to use the microsoft-never-gets-it-right macro */	1705	/* have to use the microsoft-never-gets-it-right macro */
1521	array_free (rfeed, EMPTY);	1706	array_free (rfeed, EMPTY);
1522	array_free (fdchange, EMPTY);	1707	array_free (fdchange, EMPTY);
1523	array_free (timer, EMPTY);	1708	array_free (timer, EMPTY);
…		…
1558		1743
1559	if (ev_is_active (&pipe_w))	1744	if (ev_is_active (&pipe_w))
1560	{	1745	{
1561	/* this "locks" the handlers against writing to the pipe */	1746	/* this "locks" the handlers against writing to the pipe */
1562	/* while we modify the fd vars */	1747	/* while we modify the fd vars */
1563	gotsig = 1;	1748	sig_pending = 1;
1564	#if EV_ASYNC_ENABLE	1749	#if EV_ASYNC_ENABLE
1565	gotasync = 1;	1750	async_pending = 1;
1566	#endif	1751	#endif
1567		1752
1568	ev_ref (EV_A);	1753	ev_ref (EV_A);
1569	ev_io_stop (EV_A_ &pipe_w);	1754	ev_io_stop (EV_A_ &pipe_w);
1570		1755
…		…
1573	close (evfd);	1758	close (evfd);
1574	#endif	1759	#endif
1575		1760
1576	if (evpipe [0] >= 0)	1761	if (evpipe [0] >= 0)
1577	{	1762	{
1578	close (evpipe [0]);	1763	EV_WIN32_CLOSE_FD (evpipe [0]);
1579	close (evpipe [1]);	1764	EV_WIN32_CLOSE_FD (evpipe [1]);
1580	}	1765	}
1581		1766
1582	evpipe_init (EV_A);	1767	evpipe_init (EV_A);
1583	/* now iterate over everything, in case we missed something */	1768	/* now iterate over everything, in case we missed something */
1584	pipecb (EV_A_ &pipe_w, EV_READ);	1769	pipecb (EV_A_ &pipe_w, EV_READ);
…		…
1590	#if EV_MULTIPLICITY	1775	#if EV_MULTIPLICITY
1591		1776
1592	struct ev_loop *	1777	struct ev_loop *
1593	ev_loop_new (unsigned int flags)	1778	ev_loop_new (unsigned int flags)
1594	{	1779	{
1595	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));	1780	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1596		1781
1597	memset (loop, 0, sizeof (struct ev_loop));	1782	memset (EV_A, 0, sizeof (struct ev_loop));
1598
1599	loop_init (EV_A_ flags);	1783	loop_init (EV_A_ flags);
1600		1784
1601	if (ev_backend (EV_A))	1785	if (ev_backend (EV_A))
1602	return loop;	1786	return EV_A;
1603		1787
1604	return 0;	1788	return 0;
1605	}	1789	}
1606		1790
1607	void	1791	void
…		…
1614	void	1798	void
1615	ev_loop_fork (EV_P)	1799	ev_loop_fork (EV_P)
1616	{	1800	{
1617	postfork = 1; /* must be in line with ev_default_fork */	1801	postfork = 1; /* must be in line with ev_default_fork */
1618	}	1802	}
		1803	#endif /* multiplicity */
1619		1804
1620	#if EV_VERIFY	1805	#if EV_VERIFY
1621	static void noinline	1806	static void noinline
1622	verify_watcher (EV_P_ W w)	1807	verify_watcher (EV_P_ W w)
1623	{	1808	{
…		…
1651	verify_watcher (EV_A_ ws [cnt]);	1836	verify_watcher (EV_A_ ws [cnt]);
1652	}	1837	}
1653	}	1838	}
1654	#endif	1839	#endif
1655		1840
		1841	#if EV_MINIMAL < 2
1656	void	1842	void
1657	ev_loop_verify (EV_P)	1843	ev_loop_verify (EV_P)
1658	{	1844	{
1659	#if EV_VERIFY	1845	#if EV_VERIFY
1660	int i;	1846	int i;
…		…
1709	assert (checkmax >= checkcnt);	1895	assert (checkmax >= checkcnt);
1710	array_verify (EV_A_ (W *)checks, checkcnt);	1896	array_verify (EV_A_ (W *)checks, checkcnt);
1711		1897
1712	# if 0	1898	# if 0
1713	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	1899	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)	1900	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1715	# endif
1716	#endif	1901	# endif
		1902	#endif
1717	}	1903	}
1718		1904	#endif
1719	#endif /* multiplicity */
1720		1905
1721	#if EV_MULTIPLICITY	1906	#if EV_MULTIPLICITY
1722	struct ev_loop *	1907	struct ev_loop *
1723	ev_default_loop_init (unsigned int flags)	1908	ev_default_loop_init (unsigned int flags)
1724	#else	1909	#else
…		…
1727	#endif	1912	#endif
1728	{	1913	{
1729	if (!ev_default_loop_ptr)	1914	if (!ev_default_loop_ptr)
1730	{	1915	{
1731	#if EV_MULTIPLICITY	1916	#if EV_MULTIPLICITY
1732	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1917	EV_P = ev_default_loop_ptr = &default_loop_struct;
1733	#else	1918	#else
1734	ev_default_loop_ptr = 1;	1919	ev_default_loop_ptr = 1;
1735	#endif	1920	#endif
1736		1921
1737	loop_init (EV_A_ flags);	1922	loop_init (EV_A_ flags);
…		…
1754		1939
1755	void	1940	void
1756	ev_default_destroy (void)	1941	ev_default_destroy (void)
1757	{	1942	{
1758	#if EV_MULTIPLICITY	1943	#if EV_MULTIPLICITY
1759	struct ev_loop *loop = ev_default_loop_ptr;	1944	EV_P = ev_default_loop_ptr;
1760	#endif	1945	#endif
1761		1946
1762	ev_default_loop_ptr = 0;	1947	ev_default_loop_ptr = 0;
1763		1948
1764	#ifndef _WIN32	1949	#ifndef _WIN32
…		…
1771		1956
1772	void	1957	void
1773	ev_default_fork (void)	1958	ev_default_fork (void)
1774	{	1959	{
1775	#if EV_MULTIPLICITY	1960	#if EV_MULTIPLICITY
1776	struct ev_loop *loop = ev_default_loop_ptr;	1961	EV_P = ev_default_loop_ptr;
1777	#endif	1962	#endif
1778		1963
1779	postfork = 1; /* must be in line with ev_loop_fork */	1964	postfork = 1; /* must be in line with ev_loop_fork */
1780	}	1965	}
1781		1966
…		…
1785	ev_invoke (EV_P_ void *w, int revents)	1970	ev_invoke (EV_P_ void *w, int revents)
1786	{	1971	{
1787	EV_CB_INVOKE ((W)w, revents);	1972	EV_CB_INVOKE ((W)w, revents);
1788	}	1973	}
1789		1974
1790	inline_speed void	1975	unsigned int
1791	call_pending (EV_P)	1976	ev_pending_count (EV_P)
		1977	{
		1978	int pri;
		1979	unsigned int count = 0;
		1980
		1981	for (pri = NUMPRI; pri--; )
		1982	count += pendingcnt [pri];
		1983
		1984	return count;
		1985	}
		1986
		1987	void noinline
		1988	ev_invoke_pending (EV_P)
1792	{	1989	{
1793	int pri;	1990	int pri;
1794		1991
1795	for (pri = NUMPRI; pri--; )	1992	for (pri = NUMPRI; pri--; )
1796	while (pendingcnt [pri])	1993	while (pendingcnt [pri])
…		…
2034	}	2231	}
2035		2232
2036	void	2233	void
2037	ev_loop (EV_P_ int flags)	2234	ev_loop (EV_P_ int flags)
2038	{	2235	{
		2236	#if EV_MINIMAL < 2
2039	++loop_depth;	2237	++loop_depth;
		2238	#endif
		2239
		2240	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2040		2241
2041	loop_done = EVUNLOOP_CANCEL;	2242	loop_done = EVUNLOOP_CANCEL;
2042		2243
2043	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2244	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2044		2245
2045	do	2246	do
2046	{	2247	{
2047	#if EV_VERIFY >= 2	2248	#if EV_VERIFY >= 2
2048	ev_loop_verify (EV_A);	2249	ev_loop_verify (EV_A);
…		…
2061	/* we might have forked, so queue fork handlers */	2262	/* we might have forked, so queue fork handlers */
2062	if (expect_false (postfork))	2263	if (expect_false (postfork))
2063	if (forkcnt)	2264	if (forkcnt)
2064	{	2265	{
2065	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2266	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2066	call_pending (EV_A);	2267	EV_INVOKE_PENDING;
2067	}	2268	}
2068	#endif	2269	#endif
2069		2270
2070	/* queue prepare watchers (and execute them) */	2271	/* queue prepare watchers (and execute them) */
2071	if (expect_false (preparecnt))	2272	if (expect_false (preparecnt))
2072	{	2273	{
2073	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2274	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2074	call_pending (EV_A);	2275	EV_INVOKE_PENDING;
2075	}	2276	}
		2277
		2278	if (expect_false (loop_done))
		2279	break;
2076		2280
2077	/* we might have forked, so reify kernel state if necessary */	2281	/* we might have forked, so reify kernel state if necessary */
2078	if (expect_false (postfork))	2282	if (expect_false (postfork))
2079	loop_fork (EV_A);	2283	loop_fork (EV_A);
2080		2284
…		…
2128	waittime -= sleeptime;	2332	waittime -= sleeptime;
2129	}	2333	}
2130	}	2334	}
2131	}	2335	}
2132		2336
		2337	#if EV_MINIMAL < 2
2133	++loop_count;	2338	++loop_count;
		2339	#endif
		2340	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2134	backend_poll (EV_A_ waittime);	2341	backend_poll (EV_A_ waittime);
		2342	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2135		2343
2136	/* update ev_rt_now, do magic */	2344	/* update ev_rt_now, do magic */
2137	time_update (EV_A_ waittime + sleeptime);	2345	time_update (EV_A_ waittime + sleeptime);
2138	}	2346	}
2139		2347
…		…
2150		2358
2151	/* queue check watchers, to be executed first */	2359	/* queue check watchers, to be executed first */
2152	if (expect_false (checkcnt))	2360	if (expect_false (checkcnt))
2153	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2361	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2154		2362
2155	call_pending (EV_A);	2363	EV_INVOKE_PENDING;
2156	}	2364	}
2157	while (expect_true (	2365	while (expect_true (
2158	activecnt	2366	activecnt
2159	&& !loop_done	2367	&& !loop_done
2160	&& !(flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK))	2368	&& !(flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK))
2161	));	2369	));
2162		2370
2163	if (loop_done == EVUNLOOP_ONE)	2371	if (loop_done == EVUNLOOP_ONE)
2164	loop_done = EVUNLOOP_CANCEL;	2372	loop_done = EVUNLOOP_CANCEL;
2165		2373
		2374	#if EV_MINIMAL < 2
2166	--loop_depth;	2375	--loop_depth;
		2376	#endif
2167	}	2377	}
2168		2378
2169	void	2379	void
2170	ev_unloop (EV_P_ int how)	2380	ev_unloop (EV_P_ int how)
2171	{	2381	{
…		…
2222	inline_size void	2432	inline_size void
2223	wlist_del (WL *head, WL elem)	2433	wlist_del (WL *head, WL elem)
2224	{	2434	{
2225	while (*head)	2435	while (*head)
2226	{	2436	{
2227	if (*head == elem)	2437	if (expect_true (*head == elem))
2228	{	2438	{
2229	*head = elem->next;	2439	*head = elem->next;
2230	return;	2440	break;
2231	}	2441	}
2232		2442
2233	head = &(*head)->next;	2443	head = &(*head)->next;
2234	}	2444	}
2235	}	2445	}
…		…
2303		2513
2304	ev_start (EV_A_ (W)w, 1);	2514	ev_start (EV_A_ (W)w, 1);
2305	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2515	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2306	wlist_add (&anfds[fd].head, (WL)w);	2516	wlist_add (&anfds[fd].head, (WL)w);
2307		2517
2308	fd_change (EV_A_ fd, w->events & EV__IOFDSET \| 1);	2518	fd_change (EV_A_ fd, w->events & EV__IOFDSET \| EV_ANFD_REIFY);
2309	w->events &= ~EV__IOFDSET;	2519	w->events &= ~EV__IOFDSET;
2310		2520
2311	EV_FREQUENT_CHECK;	2521	EV_FREQUENT_CHECK;
2312	}	2522	}
2313		2523
…		…
2407	}	2617	}
2408		2618
2409	EV_FREQUENT_CHECK;	2619	EV_FREQUENT_CHECK;
2410	}	2620	}
2411		2621
		2622	ev_tstamp
		2623	ev_timer_remaining (EV_P_ ev_timer *w)
		2624	{
		2625	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
		2626	}
		2627
2412	#if EV_PERIODIC_ENABLE	2628	#if EV_PERIODIC_ENABLE
2413	void noinline	2629	void noinline
2414	ev_periodic_start (EV_P_ ev_periodic *w)	2630	ev_periodic_start (EV_P_ ev_periodic *w)
2415	{	2631	{
2416	if (expect_false (ev_is_active (w)))	2632	if (expect_false (ev_is_active (w)))
…		…
2483	#endif	2699	#endif
2484		2700
2485	void noinline	2701	void noinline
2486	ev_signal_start (EV_P_ ev_signal *w)	2702	ev_signal_start (EV_P_ ev_signal *w)
2487	{	2703	{
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)))	2704	if (expect_false (ev_is_active (w)))
2492	return;	2705	return;
2493		2706
2494	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));	2707	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2495		2708
2496	evpipe_init (EV_A);	2709	#if EV_MULTIPLICITY
		2710	assert (("libev: a signal must not be attached to two different loops",
		2711	!signals [w->signum - 1].loop \|\| signals [w->signum - 1].loop == loop));
2497		2712
2498	EV_FREQUENT_CHECK;	2713	signals [w->signum - 1].loop = EV_A;
		2714	#endif
2499		2715
		2716	EV_FREQUENT_CHECK;
		2717
		2718	#if EV_USE_SIGNALFD
		2719	if (sigfd == -2)
2500	{	2720	{
2501	#ifndef _WIN32	2721	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK \| SFD_CLOEXEC);
2502	sigset_t full, prev;	2722	if (sigfd < 0 && errno == EINVAL)
2503	sigfillset (&full);	2723	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2504	sigprocmask (SIG_SETMASK, &full, &prev);
2505	#endif
2506		2724
2507	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);	2725	if (sigfd >= 0)
		2726	{
		2727	fd_intern (sigfd); /* doing it twice will not hurt */
2508		2728
2509	#ifndef _WIN32	2729	sigemptyset (&sigfd_set);
2510	sigprocmask (SIG_SETMASK, &prev, 0);	2730
2511	#endif	2731	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2732	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2733	ev_io_start (EV_A_ &sigfd_w);
		2734	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2735	}
2512	}	2736	}
		2737
		2738	if (sigfd >= 0)
		2739	{
		2740	/* TODO: check .head */
		2741	sigaddset (&sigfd_set, w->signum);
		2742	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2743
		2744	signalfd (sigfd, &sigfd_set, 0);
		2745	}
		2746	#endif
2513		2747
2514	ev_start (EV_A_ (W)w, 1);	2748	ev_start (EV_A_ (W)w, 1);
2515	wlist_add (&signals [w->signum - 1].head, (WL)w);	2749	wlist_add (&signals [w->signum - 1].head, (WL)w);
2516		2750
2517	if (!((WL)w)->next)	2751	if (!((WL)w)->next)
		2752	# if EV_USE_SIGNALFD
		2753	if (sigfd < 0) /TODO/
		2754	# endif
2518	{	2755	{
2519	#if _WIN32	2756	# if _WIN32
2520	signal (w->signum, ev_sighandler);	2757	signal (w->signum, ev_sighandler);
2521	#else	2758	# else
2522	struct sigaction sa;	2759	struct sigaction sa;
		2760
		2761	evpipe_init (EV_A);
		2762
2523	sa.sa_handler = ev_sighandler;	2763	sa.sa_handler = ev_sighandler;
2524	sigfillset (&sa.sa_mask);	2764	sigfillset (&sa.sa_mask);
2525	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2765	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2526	sigaction (w->signum, &sa, 0);	2766	sigaction (w->signum, &sa, 0);
		2767
		2768	sigemptyset (&sa.sa_mask);
		2769	sigaddset (&sa.sa_mask, w->signum);
		2770	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2527	#endif	2771	#endif
2528	}	2772	}
2529		2773
2530	EV_FREQUENT_CHECK;	2774	EV_FREQUENT_CHECK;
2531	}	2775	}
2532		2776
2533	void noinline	2777	void noinline
…		…
2541		2785
2542	wlist_del (&signals [w->signum - 1].head, (WL)w);	2786	wlist_del (&signals [w->signum - 1].head, (WL)w);
2543	ev_stop (EV_A_ (W)w);	2787	ev_stop (EV_A_ (W)w);
2544		2788
2545	if (!signals [w->signum - 1].head)	2789	if (!signals [w->signum - 1].head)
		2790	{
		2791	#if EV_MULTIPLICITY
		2792	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2793	#endif
		2794	#if EV_USE_SIGNALFD
		2795	if (sigfd >= 0)
		2796	{
		2797	sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D
		2798	sigdelset (&sigfd_set, w->signum);
		2799	signalfd (sigfd, &sigfd_set, 0);
		2800	sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D
		2801	/TODO: maybe unblock signal? /
		2802	}
		2803	else
		2804	#endif
2546	signal (w->signum, SIG_DFL);	2805	signal (w->signum, SIG_DFL);
		2806	}
2547		2807
2548	EV_FREQUENT_CHECK;	2808	EV_FREQUENT_CHECK;
2549	}	2809	}
2550		2810
2551	void	2811	void
…		…
2631	}	2891	}
2632	}	2892	}
2633		2893
2634	if (w->wd >= 0)	2894	if (w->wd >= 0)
2635	{	2895	{
		2896	struct statfs sfs;
		2897
2636	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2898	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2637		2899
2638	/* now local changes will be tracked by inotify, but remote changes won't */	2900	/* now local changes will be tracked by inotify, but remote changes won't */
2639	/* unless the filesystem it known to be local, we therefore still poll */	2901	/* unless the filesystem it known to be local, we therefore still poll */
2640	/* also do poll on <2.6.25, but with normal frequency */	2902	/* also do poll on <2.6.25, but with normal frequency */
2641	struct statfs sfs;
2642		2903
2643	if (fs_2625 && !statfs (w->path, &sfs))	2904	if (fs_2625 && !statfs (w->path, &sfs))
2644	if (sfs.f_type == 0x1373 /* devfs */	2905	if (sfs.f_type == 0x1373 /* devfs */
2645	\|\| sfs.f_type == 0xEF53 /* ext2/3 */	2906	\|\| sfs.f_type == 0xEF53 /* ext2/3 */
2646	\|\| sfs.f_type == 0x3153464a /* jfs */	2907	\|\| sfs.f_type == 0x3153464a /* jfs */
…		…
2735	return;	2996	return;
2736		2997
2737	fs_2625 = 1;	2998	fs_2625 = 1;
2738	}	2999	}
2739		3000
		3001	inline_size int
		3002	infy_newfd (void)
		3003	{
		3004	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3005	int fd = inotify_init1 (IN_CLOEXEC \| IN_NONBLOCK);
		3006	if (fd >= 0)
		3007	return fd;
		3008	#endif
		3009	return inotify_init ();
		3010	}
		3011
2740	inline_size void	3012	inline_size void
2741	infy_init (EV_P)	3013	infy_init (EV_P)
2742	{	3014	{
2743	if (fs_fd != -2)	3015	if (fs_fd != -2)
2744	return;	3016	return;
2745		3017
2746	fs_fd = -1;	3018	fs_fd = -1;
2747		3019
2748	check_2625 (EV_A);	3020	check_2625 (EV_A);
2749		3021
2750	fs_fd = inotify_init ();	3022	fs_fd = infy_newfd ();
2751		3023
2752	if (fs_fd >= 0)	3024	if (fs_fd >= 0)
2753	{	3025	{
		3026	fd_intern (fs_fd);
2754	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3027	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2755	ev_set_priority (&fs_w, EV_MAXPRI);	3028	ev_set_priority (&fs_w, EV_MAXPRI);
2756	ev_io_start (EV_A_ &fs_w);	3029	ev_io_start (EV_A_ &fs_w);
2757	}	3030	}
2758	}	3031	}
…		…
2763	int slot;	3036	int slot;
2764		3037
2765	if (fs_fd < 0)	3038	if (fs_fd < 0)
2766	return;	3039	return;
2767		3040
		3041	ev_io_stop (EV_A_ &fs_w);
2768	close (fs_fd);	3042	close (fs_fd);
2769	fs_fd = inotify_init ();	3043	fs_fd = infy_newfd ();
		3044
		3045	if (fs_fd >= 0)
		3046	{
		3047	fd_intern (fs_fd);
		3048	ev_io_set (&fs_w, fs_fd, EV_READ);
		3049	ev_io_start (EV_A_ &fs_w);
		3050	}
2770		3051
2771	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3052	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2772	{	3053	{
2773	WL w_ = fs_hash [slot].head;	3054	WL w_ = fs_hash [slot].head;
2774	fs_hash [slot].head = 0;	3055	fs_hash [slot].head = 0;
…		…
3031	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3312	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3032	{	3313	{
3033	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));	3314	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
3034		3315
3035	{	3316	{
3036	struct ev_loop *loop = w->other;	3317	EV_P = w->other;
3037		3318
3038	while (fdchangecnt)	3319	while (fdchangecnt)
3039	{	3320	{
3040	fd_reify (EV_A);	3321	fd_reify (EV_A);
3041	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3322	ev_loop (EV_A_ EVLOOP_NONBLOCK);
…		…
3049	ev_embed w = (ev_embed )(((char *)fork_w) - offsetof (ev_embed, fork));	3330	ev_embed w = (ev_embed )(((char *)fork_w) - offsetof (ev_embed, fork));
3050		3331
3051	ev_embed_stop (EV_A_ w);	3332	ev_embed_stop (EV_A_ w);
3052		3333
3053	{	3334	{
3054	struct ev_loop *loop = w->other;	3335	EV_P = w->other;
3055		3336
3056	ev_loop_fork (EV_A);	3337	ev_loop_fork (EV_A);
3057	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3338	ev_loop (EV_A_ EVLOOP_NONBLOCK);
3058	}	3339	}
3059		3340
…		…
3073	{	3354	{
3074	if (expect_false (ev_is_active (w)))	3355	if (expect_false (ev_is_active (w)))
3075	return;	3356	return;
3076		3357
3077	{	3358	{
3078	struct ev_loop *loop = w->other;	3359	EV_P = w->other;
3079	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3360	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);	3361	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3081	}	3362	}
3082		3363
3083	EV_FREQUENT_CHECK;	3364	EV_FREQUENT_CHECK;
…		…
3195		3476
3196	void	3477	void
3197	ev_async_send (EV_P_ ev_async *w)	3478	ev_async_send (EV_P_ ev_async *w)
3198	{	3479	{
3199	w->sent = 1;	3480	w->sent = 1;
3200	evpipe_write (EV_A_ &gotasync);	3481	evpipe_write (EV_A_ &async_pending);
3201	}	3482	}
3202	#endif	3483	#endif
3203		3484
3204	/*****************************************************************************/	3485	/*****************************************************************************/
3205		3486
…		…
3354	if (types & EV_CHECK)	3635	if (types & EV_CHECK)
3355	for (i = checkcnt; i--; )	3636	for (i = checkcnt; i--; )
3356	cb (EV_A_ EV_CHECK, checks [i]);	3637	cb (EV_A_ EV_CHECK, checks [i]);
3357		3638
3358	if (types & EV_SIGNAL)	3639	if (types & EV_SIGNAL)
3359	for (i = 0; i < signalmax; ++i)	3640	for (i = 0; i < EV_NSIG - 1; ++i)
3360	for (wl = signals [i].head; wl; )	3641	for (wl = signals [i].head; wl; )
3361	{	3642	{
3362	wn = wl->next;	3643	wn = wl->next;
3363	cb (EV_A_ EV_SIGNAL, wl);	3644	cb (EV_A_ EV_SIGNAL, wl);
3364	wl = wn;	3645	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 1.316 by root, Fri Sep 18 21:02:12 2009 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.295 by root, Wed Jul 8 04:29:31 2009 UTC vs.
Revision 1.316 by root, Fri Sep 18 21:02:12 2009 UTC