[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 1.318 by root, Tue Nov 17 00:22:28 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	close (sigfd);
		1664	#endif
1485		1665
1486	#if EV_USE_INOTIFY	1666	#if EV_USE_INOTIFY
1487	if (fs_fd >= 0)	1667	if (fs_fd >= 0)
1488	close (fs_fd);	1668	close (fs_fd);
1489	#endif	1669	#endif
…		…
1513	#if EV_IDLE_ENABLE	1693	#if EV_IDLE_ENABLE
1514	array_free (idle, [i]);	1694	array_free (idle, [i]);
1515	#endif	1695	#endif
1516	}	1696	}
1517		1697
1518	ev_free (anfds); anfdmax = 0;	1698	ev_free (anfds); anfds = 0; anfdmax = 0;
1519		1699
1520	/* have to use the microsoft-never-gets-it-right macro */	1700	/* have to use the microsoft-never-gets-it-right macro */
1521	array_free (rfeed, EMPTY);	1701	array_free (rfeed, EMPTY);
1522	array_free (fdchange, EMPTY);	1702	array_free (fdchange, EMPTY);
1523	array_free (timer, EMPTY);	1703	array_free (timer, EMPTY);
…		…
1558		1738
1559	if (ev_is_active (&pipe_w))	1739	if (ev_is_active (&pipe_w))
1560	{	1740	{
1561	/* this "locks" the handlers against writing to the pipe */	1741	/* this "locks" the handlers against writing to the pipe */
1562	/* while we modify the fd vars */	1742	/* while we modify the fd vars */
1563	gotsig = 1;	1743	sig_pending = 1;
1564	#if EV_ASYNC_ENABLE	1744	#if EV_ASYNC_ENABLE
1565	gotasync = 1;	1745	async_pending = 1;
1566	#endif	1746	#endif
1567		1747
1568	ev_ref (EV_A);	1748	ev_ref (EV_A);
1569	ev_io_stop (EV_A_ &pipe_w);	1749	ev_io_stop (EV_A_ &pipe_w);
1570		1750
…		…
1573	close (evfd);	1753	close (evfd);
1574	#endif	1754	#endif
1575		1755
1576	if (evpipe [0] >= 0)	1756	if (evpipe [0] >= 0)
1577	{	1757	{
1578	close (evpipe [0]);	1758	EV_WIN32_CLOSE_FD (evpipe [0]);
1579	close (evpipe [1]);	1759	EV_WIN32_CLOSE_FD (evpipe [1]);
1580	}	1760	}
1581		1761
1582	evpipe_init (EV_A);	1762	evpipe_init (EV_A);
1583	/* now iterate over everything, in case we missed something */	1763	/* now iterate over everything, in case we missed something */
1584	pipecb (EV_A_ &pipe_w, EV_READ);	1764	pipecb (EV_A_ &pipe_w, EV_READ);
…		…
1590	#if EV_MULTIPLICITY	1770	#if EV_MULTIPLICITY
1591		1771
1592	struct ev_loop *	1772	struct ev_loop *
1593	ev_loop_new (unsigned int flags)	1773	ev_loop_new (unsigned int flags)
1594	{	1774	{
1595	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));	1775	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1596		1776
1597	memset (loop, 0, sizeof (struct ev_loop));	1777	memset (EV_A, 0, sizeof (struct ev_loop));
1598
1599	loop_init (EV_A_ flags);	1778	loop_init (EV_A_ flags);
1600		1779
1601	if (ev_backend (EV_A))	1780	if (ev_backend (EV_A))
1602	return loop;	1781	return EV_A;
1603		1782
1604	return 0;	1783	return 0;
1605	}	1784	}
1606		1785
1607	void	1786	void
…		…
1614	void	1793	void
1615	ev_loop_fork (EV_P)	1794	ev_loop_fork (EV_P)
1616	{	1795	{
1617	postfork = 1; /* must be in line with ev_default_fork */	1796	postfork = 1; /* must be in line with ev_default_fork */
1618	}	1797	}
		1798	#endif /* multiplicity */
1619		1799
1620	#if EV_VERIFY	1800	#if EV_VERIFY
1621	static void noinline	1801	static void noinline
1622	verify_watcher (EV_P_ W w)	1802	verify_watcher (EV_P_ W w)
1623	{	1803	{
…		…
1651	verify_watcher (EV_A_ ws [cnt]);	1831	verify_watcher (EV_A_ ws [cnt]);
1652	}	1832	}
1653	}	1833	}
1654	#endif	1834	#endif
1655		1835
		1836	#if EV_MINIMAL < 2
1656	void	1837	void
1657	ev_loop_verify (EV_P)	1838	ev_loop_verify (EV_P)
1658	{	1839	{
1659	#if EV_VERIFY	1840	#if EV_VERIFY
1660	int i;	1841	int i;
…		…
1709	assert (checkmax >= checkcnt);	1890	assert (checkmax >= checkcnt);
1710	array_verify (EV_A_ (W *)checks, checkcnt);	1891	array_verify (EV_A_ (W *)checks, checkcnt);
1711		1892
1712	# if 0	1893	# if 0
1713	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	1894	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)	1895	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1715	# endif
1716	#endif	1896	# endif
		1897	#endif
1717	}	1898	}
1718		1899	#endif
1719	#endif /* multiplicity */
1720		1900
1721	#if EV_MULTIPLICITY	1901	#if EV_MULTIPLICITY
1722	struct ev_loop *	1902	struct ev_loop *
1723	ev_default_loop_init (unsigned int flags)	1903	ev_default_loop_init (unsigned int flags)
1724	#else	1904	#else
…		…
1727	#endif	1907	#endif
1728	{	1908	{
1729	if (!ev_default_loop_ptr)	1909	if (!ev_default_loop_ptr)
1730	{	1910	{
1731	#if EV_MULTIPLICITY	1911	#if EV_MULTIPLICITY
1732	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1912	EV_P = ev_default_loop_ptr = &default_loop_struct;
1733	#else	1913	#else
1734	ev_default_loop_ptr = 1;	1914	ev_default_loop_ptr = 1;
1735	#endif	1915	#endif
1736		1916
1737	loop_init (EV_A_ flags);	1917	loop_init (EV_A_ flags);
…		…
1754		1934
1755	void	1935	void
1756	ev_default_destroy (void)	1936	ev_default_destroy (void)
1757	{	1937	{
1758	#if EV_MULTIPLICITY	1938	#if EV_MULTIPLICITY
1759	struct ev_loop *loop = ev_default_loop_ptr;	1939	EV_P = ev_default_loop_ptr;
1760	#endif	1940	#endif
1761		1941
1762	ev_default_loop_ptr = 0;	1942	ev_default_loop_ptr = 0;
1763		1943
1764	#ifndef _WIN32	1944	#ifndef _WIN32
…		…
1771		1951
1772	void	1952	void
1773	ev_default_fork (void)	1953	ev_default_fork (void)
1774	{	1954	{
1775	#if EV_MULTIPLICITY	1955	#if EV_MULTIPLICITY
1776	struct ev_loop *loop = ev_default_loop_ptr;	1956	EV_P = ev_default_loop_ptr;
1777	#endif	1957	#endif
1778		1958
1779	postfork = 1; /* must be in line with ev_loop_fork */	1959	postfork = 1; /* must be in line with ev_loop_fork */
1780	}	1960	}
1781		1961
…		…
1785	ev_invoke (EV_P_ void *w, int revents)	1965	ev_invoke (EV_P_ void *w, int revents)
1786	{	1966	{
1787	EV_CB_INVOKE ((W)w, revents);	1967	EV_CB_INVOKE ((W)w, revents);
1788	}	1968	}
1789		1969
1790	inline_speed void	1970	unsigned int
1791	call_pending (EV_P)	1971	ev_pending_count (EV_P)
		1972	{
		1973	int pri;
		1974	unsigned int count = 0;
		1975
		1976	for (pri = NUMPRI; pri--; )
		1977	count += pendingcnt [pri];
		1978
		1979	return count;
		1980	}
		1981
		1982	void noinline
		1983	ev_invoke_pending (EV_P)
1792	{	1984	{
1793	int pri;	1985	int pri;
1794		1986
1795	for (pri = NUMPRI; pri--; )	1987	for (pri = NUMPRI; pri--; )
1796	while (pendingcnt [pri])	1988	while (pendingcnt [pri])
…		…
2034	}	2226	}
2035		2227
2036	void	2228	void
2037	ev_loop (EV_P_ int flags)	2229	ev_loop (EV_P_ int flags)
2038	{	2230	{
		2231	#if EV_MINIMAL < 2
2039	++loop_depth;	2232	++loop_depth;
		2233	#endif
		2234
		2235	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2040		2236
2041	loop_done = EVUNLOOP_CANCEL;	2237	loop_done = EVUNLOOP_CANCEL;
2042		2238
2043	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2239	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2044		2240
2045	do	2241	do
2046	{	2242	{
2047	#if EV_VERIFY >= 2	2243	#if EV_VERIFY >= 2
2048	ev_loop_verify (EV_A);	2244	ev_loop_verify (EV_A);
…		…
2061	/* we might have forked, so queue fork handlers */	2257	/* we might have forked, so queue fork handlers */
2062	if (expect_false (postfork))	2258	if (expect_false (postfork))
2063	if (forkcnt)	2259	if (forkcnt)
2064	{	2260	{
2065	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2261	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2066	call_pending (EV_A);	2262	EV_INVOKE_PENDING;
2067	}	2263	}
2068	#endif	2264	#endif
2069		2265
2070	/* queue prepare watchers (and execute them) */	2266	/* queue prepare watchers (and execute them) */
2071	if (expect_false (preparecnt))	2267	if (expect_false (preparecnt))
2072	{	2268	{
2073	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2269	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2074	call_pending (EV_A);	2270	EV_INVOKE_PENDING;
2075	}	2271	}
		2272
		2273	if (expect_false (loop_done))
		2274	break;
2076		2275
2077	/* we might have forked, so reify kernel state if necessary */	2276	/* we might have forked, so reify kernel state if necessary */
2078	if (expect_false (postfork))	2277	if (expect_false (postfork))
2079	loop_fork (EV_A);	2278	loop_fork (EV_A);
2080		2279
…		…
2128	waittime -= sleeptime;	2327	waittime -= sleeptime;
2129	}	2328	}
2130	}	2329	}
2131	}	2330	}
2132		2331
		2332	#if EV_MINIMAL < 2
2133	++loop_count;	2333	++loop_count;
		2334	#endif
		2335	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2134	backend_poll (EV_A_ waittime);	2336	backend_poll (EV_A_ waittime);
		2337	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2135		2338
2136	/* update ev_rt_now, do magic */	2339	/* update ev_rt_now, do magic */
2137	time_update (EV_A_ waittime + sleeptime);	2340	time_update (EV_A_ waittime + sleeptime);
2138	}	2341	}
2139		2342
…		…
2150		2353
2151	/* queue check watchers, to be executed first */	2354	/* queue check watchers, to be executed first */
2152	if (expect_false (checkcnt))	2355	if (expect_false (checkcnt))
2153	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2356	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2154		2357
2155	call_pending (EV_A);	2358	EV_INVOKE_PENDING;
2156	}	2359	}
2157	while (expect_true (	2360	while (expect_true (
2158	activecnt	2361	activecnt
2159	&& !loop_done	2362	&& !loop_done
2160	&& !(flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK))	2363	&& !(flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK))
2161	));	2364	));
2162		2365
2163	if (loop_done == EVUNLOOP_ONE)	2366	if (loop_done == EVUNLOOP_ONE)
2164	loop_done = EVUNLOOP_CANCEL;	2367	loop_done = EVUNLOOP_CANCEL;
2165		2368
		2369	#if EV_MINIMAL < 2
2166	--loop_depth;	2370	--loop_depth;
		2371	#endif
2167	}	2372	}
2168		2373
2169	void	2374	void
2170	ev_unloop (EV_P_ int how)	2375	ev_unloop (EV_P_ int how)
2171	{	2376	{
…		…
2222	inline_size void	2427	inline_size void
2223	wlist_del (WL *head, WL elem)	2428	wlist_del (WL *head, WL elem)
2224	{	2429	{
2225	while (*head)	2430	while (*head)
2226	{	2431	{
2227	if (*head == elem)	2432	if (expect_true (*head == elem))
2228	{	2433	{
2229	*head = elem->next;	2434	*head = elem->next;
2230	return;	2435	break;
2231	}	2436	}
2232		2437
2233	head = &(*head)->next;	2438	head = &(*head)->next;
2234	}	2439	}
2235	}	2440	}
…		…
2303		2508
2304	ev_start (EV_A_ (W)w, 1);	2509	ev_start (EV_A_ (W)w, 1);
2305	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2510	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2306	wlist_add (&anfds[fd].head, (WL)w);	2511	wlist_add (&anfds[fd].head, (WL)w);
2307		2512
2308	fd_change (EV_A_ fd, w->events & EV__IOFDSET \| 1);	2513	fd_change (EV_A_ fd, w->events & EV__IOFDSET \| EV_ANFD_REIFY);
2309	w->events &= ~EV__IOFDSET;	2514	w->events &= ~EV__IOFDSET;
2310		2515
2311	EV_FREQUENT_CHECK;	2516	EV_FREQUENT_CHECK;
2312	}	2517	}
2313		2518
…		…
2407	}	2612	}
2408		2613
2409	EV_FREQUENT_CHECK;	2614	EV_FREQUENT_CHECK;
2410	}	2615	}
2411		2616
		2617	ev_tstamp
		2618	ev_timer_remaining (EV_P_ ev_timer *w)
		2619	{
		2620	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
		2621	}
		2622
2412	#if EV_PERIODIC_ENABLE	2623	#if EV_PERIODIC_ENABLE
2413	void noinline	2624	void noinline
2414	ev_periodic_start (EV_P_ ev_periodic *w)	2625	ev_periodic_start (EV_P_ ev_periodic *w)
2415	{	2626	{
2416	if (expect_false (ev_is_active (w)))	2627	if (expect_false (ev_is_active (w)))
…		…
2483	#endif	2694	#endif
2484		2695
2485	void noinline	2696	void noinline
2486	ev_signal_start (EV_P_ ev_signal *w)	2697	ev_signal_start (EV_P_ ev_signal *w)
2487	{	2698	{
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)))	2699	if (expect_false (ev_is_active (w)))
2492	return;	2700	return;
2493		2701
2494	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));	2702	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2495		2703
2496	evpipe_init (EV_A);	2704	#if EV_MULTIPLICITY
		2705	assert (("libev: a signal must not be attached to two different loops",
		2706	!signals [w->signum - 1].loop \|\| signals [w->signum - 1].loop == loop));
2497		2707
2498	EV_FREQUENT_CHECK;	2708	signals [w->signum - 1].loop = EV_A;
		2709	#endif
2499		2710
		2711	EV_FREQUENT_CHECK;
		2712
		2713	#if EV_USE_SIGNALFD
		2714	if (sigfd == -2)
2500	{	2715	{
2501	#ifndef _WIN32	2716	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK \| SFD_CLOEXEC);
2502	sigset_t full, prev;	2717	if (sigfd < 0 && errno == EINVAL)
2503	sigfillset (&full);	2718	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2504	sigprocmask (SIG_SETMASK, &full, &prev);
2505	#endif
2506		2719
2507	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);	2720	if (sigfd >= 0)
		2721	{
		2722	fd_intern (sigfd); /* doing it twice will not hurt */
2508		2723
2509	#ifndef _WIN32	2724	sigemptyset (&sigfd_set);
2510	sigprocmask (SIG_SETMASK, &prev, 0);	2725
2511	#endif	2726	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2727	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2728	ev_io_start (EV_A_ &sigfd_w);
		2729	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2730	}
2512	}	2731	}
		2732
		2733	if (sigfd >= 0)
		2734	{
		2735	/* TODO: check .head */
		2736	sigaddset (&sigfd_set, w->signum);
		2737	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2738
		2739	signalfd (sigfd, &sigfd_set, 0);
		2740	}
		2741	#endif
2513		2742
2514	ev_start (EV_A_ (W)w, 1);	2743	ev_start (EV_A_ (W)w, 1);
2515	wlist_add (&signals [w->signum - 1].head, (WL)w);	2744	wlist_add (&signals [w->signum - 1].head, (WL)w);
2516		2745
2517	if (!((WL)w)->next)	2746	if (!((WL)w)->next)
		2747	# if EV_USE_SIGNALFD
		2748	if (sigfd < 0) /TODO/
		2749	# endif
2518	{	2750	{
2519	#if _WIN32	2751	# if _WIN32
		2752	evpipe_init (EV_A);
		2753
2520	signal (w->signum, ev_sighandler);	2754	signal (w->signum, ev_sighandler);
2521	#else	2755	# else
2522	struct sigaction sa;	2756	struct sigaction sa;
		2757
		2758	evpipe_init (EV_A);
		2759
2523	sa.sa_handler = ev_sighandler;	2760	sa.sa_handler = ev_sighandler;
2524	sigfillset (&sa.sa_mask);	2761	sigfillset (&sa.sa_mask);
2525	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2762	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2526	sigaction (w->signum, &sa, 0);	2763	sigaction (w->signum, &sa, 0);
		2764
		2765	sigemptyset (&sa.sa_mask);
		2766	sigaddset (&sa.sa_mask, w->signum);
		2767	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2527	#endif	2768	#endif
2528	}	2769	}
2529		2770
2530	EV_FREQUENT_CHECK;	2771	EV_FREQUENT_CHECK;
2531	}	2772	}
2532		2773
2533	void noinline	2774	void noinline
…		…
2541		2782
2542	wlist_del (&signals [w->signum - 1].head, (WL)w);	2783	wlist_del (&signals [w->signum - 1].head, (WL)w);
2543	ev_stop (EV_A_ (W)w);	2784	ev_stop (EV_A_ (W)w);
2544		2785
2545	if (!signals [w->signum - 1].head)	2786	if (!signals [w->signum - 1].head)
		2787	{
		2788	#if EV_MULTIPLICITY
		2789	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2790	#endif
		2791	#if EV_USE_SIGNALFD
		2792	if (sigfd >= 0)
		2793	{
		2794	sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D
		2795	sigdelset (&sigfd_set, w->signum);
		2796	signalfd (sigfd, &sigfd_set, 0);
		2797	sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D
		2798	/TODO: maybe unblock signal? /
		2799	}
		2800	else
		2801	#endif
2546	signal (w->signum, SIG_DFL);	2802	signal (w->signum, SIG_DFL);
		2803	}
2547		2804
2548	EV_FREQUENT_CHECK;	2805	EV_FREQUENT_CHECK;
2549	}	2806	}
2550		2807
2551	void	2808	void
…		…
2599	static void noinline	2856	static void noinline
2600	infy_add (EV_P_ ev_stat *w)	2857	infy_add (EV_P_ ev_stat *w)
2601	{	2858	{
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);	2859	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		2860
2604	if (w->wd < 0)	2861	if (w->wd >= 0)
		2862	{
		2863	struct statfs sfs;
		2864
		2865	/* now local changes will be tracked by inotify, but remote changes won't */
		2866	/* unless the filesystem is known to be local, we therefore still poll */
		2867	/* also do poll on <2.6.25, but with normal frequency */
		2868
		2869	if (!fs_2625)
		2870	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		2871	else if (!statfs (w->path, &sfs)
		2872	&& (sfs.f_type == 0x1373 /* devfs */
		2873	\|\| sfs.f_type == 0xEF53 /* ext2/3 */
		2874	\|\| sfs.f_type == 0x3153464a /* jfs */
		2875	\|\| sfs.f_type == 0x52654973 /* reiser3 */
		2876	\|\| sfs.f_type == 0x01021994 /* tempfs */
		2877	\|\| sfs.f_type == 0x58465342 /* xfs */))
		2878	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
		2879	else
		2880	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2605	{	2881	}
		2882	else
		2883	{
		2884	/* can't use inotify, continue to stat */
2606	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;	2885	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		2886
2609	/* monitor some parent directory for speedup hints */	2887	/* 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, */	2888	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2611	/* but an efficiency issue only */	2889	/* but an efficiency issue only */
2612	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)	2890	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)
2613	{	2891	{
2614	char path [4096];	2892	char path [4096];
…		…
2630	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));	2908	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));
2631	}	2909	}
2632	}	2910	}
2633		2911
2634	if (w->wd >= 0)	2912	if (w->wd >= 0)
2635	{
2636	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2913	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2637		2914
2638	/* now local changes will be tracked by inotify, but remote changes won't */	2915	/* now re-arm timer, if required */
2639	/* unless the filesystem it known to be local, we therefore still poll */	2916	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);	2917	ev_timer_again (EV_A_ &w->timer);
2654	}	2918	if (ev_is_active (&w->timer)) ev_unref (EV_A);
2655	}	2919	}
2656		2920
2657	static void noinline	2921	static void noinline
2658	infy_del (EV_P_ ev_stat *w)	2922	infy_del (EV_P_ ev_stat *w)
2659	{	2923	{
…		…
2735	return;	2999	return;
2736		3000
2737	fs_2625 = 1;	3001	fs_2625 = 1;
2738	}	3002	}
2739		3003
		3004	inline_size int
		3005	infy_newfd (void)
		3006	{
		3007	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3008	int fd = inotify_init1 (IN_CLOEXEC \| IN_NONBLOCK);
		3009	if (fd >= 0)
		3010	return fd;
		3011	#endif
		3012	return inotify_init ();
		3013	}
		3014
2740	inline_size void	3015	inline_size void
2741	infy_init (EV_P)	3016	infy_init (EV_P)
2742	{	3017	{
2743	if (fs_fd != -2)	3018	if (fs_fd != -2)
2744	return;	3019	return;
2745		3020
2746	fs_fd = -1;	3021	fs_fd = -1;
2747		3022
2748	check_2625 (EV_A);	3023	check_2625 (EV_A);
2749		3024
2750	fs_fd = inotify_init ();	3025	fs_fd = infy_newfd ();
2751		3026
2752	if (fs_fd >= 0)	3027	if (fs_fd >= 0)
2753	{	3028	{
		3029	fd_intern (fs_fd);
2754	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3030	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2755	ev_set_priority (&fs_w, EV_MAXPRI);	3031	ev_set_priority (&fs_w, EV_MAXPRI);
2756	ev_io_start (EV_A_ &fs_w);	3032	ev_io_start (EV_A_ &fs_w);
		3033	ev_unref (EV_A);
2757	}	3034	}
2758	}	3035	}
2759		3036
2760	inline_size void	3037	inline_size void
2761	infy_fork (EV_P)	3038	infy_fork (EV_P)
…		…
2763	int slot;	3040	int slot;
2764		3041
2765	if (fs_fd < 0)	3042	if (fs_fd < 0)
2766	return;	3043	return;
2767		3044
		3045	ev_ref (EV_A);
		3046	ev_io_stop (EV_A_ &fs_w);
2768	close (fs_fd);	3047	close (fs_fd);
2769	fs_fd = inotify_init ();	3048	fs_fd = infy_newfd ();
		3049
		3050	if (fs_fd >= 0)
		3051	{
		3052	fd_intern (fs_fd);
		3053	ev_io_set (&fs_w, fs_fd, EV_READ);
		3054	ev_io_start (EV_A_ &fs_w);
		3055	ev_unref (EV_A);
		3056	}
2770		3057
2771	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3058	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2772	{	3059	{
2773	WL w_ = fs_hash [slot].head;	3060	WL w_ = fs_hash [slot].head;
2774	fs_hash [slot].head = 0;	3061	fs_hash [slot].head = 0;
…		…
2781	w->wd = -1;	3068	w->wd = -1;
2782		3069
2783	if (fs_fd >= 0)	3070	if (fs_fd >= 0)
2784	infy_add (EV_A_ w); /* re-add, no matter what */	3071	infy_add (EV_A_ w); /* re-add, no matter what */
2785	else	3072	else
		3073	{
		3074	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3075	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2786	ev_timer_again (EV_A_ &w->timer);	3076	ev_timer_again (EV_A_ &w->timer);
		3077	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		3078	}
2787	}	3079	}
2788	}	3080	}
2789	}	3081	}
2790		3082
2791	#endif	3083	#endif
…		…
2861		3153
2862	if (fs_fd >= 0)	3154	if (fs_fd >= 0)
2863	infy_add (EV_A_ w);	3155	infy_add (EV_A_ w);
2864	else	3156	else
2865	#endif	3157	#endif
		3158	{
2866	ev_timer_again (EV_A_ &w->timer);	3159	ev_timer_again (EV_A_ &w->timer);
		3160	ev_unref (EV_A);
		3161	}
2867		3162
2868	ev_start (EV_A_ (W)w, 1);	3163	ev_start (EV_A_ (W)w, 1);
2869		3164
2870	EV_FREQUENT_CHECK;	3165	EV_FREQUENT_CHECK;
2871	}	3166	}
…		…
2880	EV_FREQUENT_CHECK;	3175	EV_FREQUENT_CHECK;
2881		3176
2882	#if EV_USE_INOTIFY	3177	#if EV_USE_INOTIFY
2883	infy_del (EV_A_ w);	3178	infy_del (EV_A_ w);
2884	#endif	3179	#endif
		3180
		3181	if (ev_is_active (&w->timer))
		3182	{
		3183	ev_ref (EV_A);
2885	ev_timer_stop (EV_A_ &w->timer);	3184	ev_timer_stop (EV_A_ &w->timer);
		3185	}
2886		3186
2887	ev_stop (EV_A_ (W)w);	3187	ev_stop (EV_A_ (W)w);
2888		3188
2889	EV_FREQUENT_CHECK;	3189	EV_FREQUENT_CHECK;
2890	}	3190	}
…		…
3031	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3331	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3032	{	3332	{
3033	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));	3333	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
3034		3334
3035	{	3335	{
3036	struct ev_loop *loop = w->other;	3336	EV_P = w->other;
3037		3337
3038	while (fdchangecnt)	3338	while (fdchangecnt)
3039	{	3339	{
3040	fd_reify (EV_A);	3340	fd_reify (EV_A);
3041	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3341	ev_loop (EV_A_ EVLOOP_NONBLOCK);
…		…
3049	ev_embed w = (ev_embed )(((char *)fork_w) - offsetof (ev_embed, fork));	3349	ev_embed w = (ev_embed )(((char *)fork_w) - offsetof (ev_embed, fork));
3050		3350
3051	ev_embed_stop (EV_A_ w);	3351	ev_embed_stop (EV_A_ w);
3052		3352
3053	{	3353	{
3054	struct ev_loop *loop = w->other;	3354	EV_P = w->other;
3055		3355
3056	ev_loop_fork (EV_A);	3356	ev_loop_fork (EV_A);
3057	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3357	ev_loop (EV_A_ EVLOOP_NONBLOCK);
3058	}	3358	}
3059		3359
…		…
3073	{	3373	{
3074	if (expect_false (ev_is_active (w)))	3374	if (expect_false (ev_is_active (w)))
3075	return;	3375	return;
3076		3376
3077	{	3377	{
3078	struct ev_loop *loop = w->other;	3378	EV_P = w->other;
3079	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3379	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);	3380	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3081	}	3381	}
3082		3382
3083	EV_FREQUENT_CHECK;	3383	EV_FREQUENT_CHECK;
…		…
3195		3495
3196	void	3496	void
3197	ev_async_send (EV_P_ ev_async *w)	3497	ev_async_send (EV_P_ ev_async *w)
3198	{	3498	{
3199	w->sent = 1;	3499	w->sent = 1;
3200	evpipe_write (EV_A_ &gotasync);	3500	evpipe_write (EV_A_ &async_pending);
3201	}	3501	}
3202	#endif	3502	#endif
3203		3503
3204	/*****************************************************************************/	3504	/*****************************************************************************/
3205		3505
…		…
3354	if (types & EV_CHECK)	3654	if (types & EV_CHECK)
3355	for (i = checkcnt; i--; )	3655	for (i = checkcnt; i--; )
3356	cb (EV_A_ EV_CHECK, checks [i]);	3656	cb (EV_A_ EV_CHECK, checks [i]);
3357		3657
3358	if (types & EV_SIGNAL)	3658	if (types & EV_SIGNAL)
3359	for (i = 0; i < signalmax; ++i)	3659	for (i = 0; i < EV_NSIG - 1; ++i)
3360	for (wl = signals [i].head; wl; )	3660	for (wl = signals [i].head; wl; )
3361	{	3661	{
3362	wn = wl->next;	3662	wn = wl->next;
3363	cb (EV_A_ EV_SIGNAL, wl);	3663	cb (EV_A_ EV_SIGNAL, wl);
3364	wl = wn;	3664	wl = wn;

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+Removed lines
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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 1.318 by root, Tue Nov 17 00:22:28 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 1.318 by root, Tue Nov 17 00:22:28 2009 UTC