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

Comparing libev/ev.c (file contents):
Revision 1.293 by root, Mon Jun 29 18:46:52 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
…		…
391	# define inline_speed static noinline	472	# define inline_speed static noinline
392	#else	473	#else
393	# define inline_speed static inline	474	# define inline_speed static inline
394	#endif	475	#endif
395		476
396	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	477	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		478
		479	#if EV_MINPRI == EV_MAXPRI
		480	# define ABSPRI(w) (((W)w), 0)
		481	#else
397	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	482	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		483	#endif
398		484
399	#define EMPTY /* required for microsofts broken pseudo-c compiler */	485	#define EMPTY /* required for microsofts broken pseudo-c compiler */
400	#define EMPTY2(a,b) /* used to suppress some warnings */	486	#define EMPTY2(a,b) /* used to suppress some warnings */
401		487
402	typedef ev_watcher *W;	488	typedef ev_watcher *W;
…		…
414		500
415	#if EV_USE_MONOTONIC	501	#if EV_USE_MONOTONIC
416	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? */
417	#endif	503	#endif
418		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
419	#ifdef _WIN32	515	#ifdef _WIN32
420	# include "ev_win32.c"	516	# include "ev_win32.c"
421	#endif	517	#endif
422		518
423	/*****************************************************************************/	519	/*****************************************************************************/
…		…
485	#define ev_malloc(size) ev_realloc (0, (size))	581	#define ev_malloc(size) ev_realloc (0, (size))
486	#define ev_free(ptr) ev_realloc ((ptr), 0)	582	#define ev_free(ptr) ev_realloc ((ptr), 0)
487		583
488	/*****************************************************************************/	584	/*****************************************************************************/
489		585
		586	/* set in reify when reification needed */
		587	#define EV_ANFD_REIFY 1
		588
490	/* file descriptor info structure */	589	/* file descriptor info structure */
491	typedef struct	590	typedef struct
492	{	591	{
493	WL head;	592	WL head;
494	unsigned char events; /* the events watched for */	593	unsigned char events; /* the events watched for */
495	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) */
496	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 */
497	unsigned char unused;	596	unsigned char unused;
498	#if EV_USE_EPOLL	597	#if EV_USE_EPOLL
499	unsigned int egen; /* generation counter to counter epoll bugs */	598	unsigned int egen; /* generation counter to counter epoll bugs */
500	#endif	599	#endif
…		…
562		661
563	static int ev_default_loop_ptr;	662	static int ev_default_loop_ptr;
564		663
565	#endif	664	#endif
566		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
567	/*****************************************************************************/	678	/*****************************************************************************/
568		679
569	#ifndef EV_HAVE_EV_TIME	680	#ifndef EV_HAVE_EV_TIME
570	ev_tstamp	681	ev_tstamp
571	ev_time (void)	682	ev_time (void)
…		…
627		738
628	tv.tv_sec = (time_t)delay;	739	tv.tv_sec = (time_t)delay;
629	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	740	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
630		741
631	/* 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 */
632	/* somehting not guaranteed by newer posix versions, but guaranteed */	743	/* something not guaranteed by newer posix versions, but guaranteed */
633	/* by older ones */	744	/* by older ones */
634	select (0, 0, 0, 0, &tv);	745	select (0, 0, 0, 0, &tv);
635	#endif	746	#endif
636	}	747	}
637	}	748	}
…		…
745	}	856	}
746		857
747	/*****************************************************************************/	858	/*****************************************************************************/
748		859
749	inline_speed void	860	inline_speed void
750	fd_event (EV_P_ int fd, int revents)	861	fd_event_nc (EV_P_ int fd, int revents)
751	{	862	{
752	ANFD *anfd = anfds + fd;	863	ANFD *anfd = anfds + fd;
753	ev_io *w;	864	ev_io *w;
754		865
755	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)
…		…
759	if (ev)	870	if (ev)
760	ev_feed_event (EV_A_ (W)w, ev);	871	ev_feed_event (EV_A_ (W)w, ev);
761	}	872	}
762	}	873	}
763		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
764	void	886	void
765	ev_feed_fd_event (EV_P_ int fd, int revents)	887	ev_feed_fd_event (EV_P_ int fd, int revents)
766	{	888	{
767	if (fd >= 0 && fd < anfdmax)	889	if (fd >= 0 && fd < anfdmax)
768	fd_event (EV_A_ fd, revents);	890	fd_event_nc (EV_A_ fd, revents);
769	}	891	}
770		892
771	/* make sure the external fd watch events are in-sync */	893	/* make sure the external fd watch events are in-sync */
772	/* with the kernel/libev internal state */	894	/* with the kernel/libev internal state */
773	inline_size void	895	inline_size void
…		…
788		910
789	#if EV_SELECT_IS_WINSOCKET	911	#if EV_SELECT_IS_WINSOCKET
790	if (events)	912	if (events)
791	{	913	{
792	unsigned long arg;	914	unsigned long arg;
793	#ifdef EV_FD_TO_WIN32_HANDLE
794	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	915	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
795	#else
796	anfd->handle = _get_osfhandle (fd);
797	#endif
798	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));
799	}	917	}
800	#endif	918	#endif
801		919
802	{	920	{
…		…
873		991
874	for (fd = anfdmax; fd--; )	992	for (fd = anfdmax; fd--; )
875	if (anfds [fd].events)	993	if (anfds [fd].events)
876	{	994	{
877	fd_kill (EV_A_ fd);	995	fd_kill (EV_A_ fd);
878	return;	996	break;
879	}	997	}
880	}	998	}
881		999
882	/* 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 */
883	static void noinline	1001	static void noinline
…		…
888	for (fd = 0; fd < anfdmax; ++fd)	1006	for (fd = 0; fd < anfdmax; ++fd)
889	if (anfds [fd].events)	1007	if (anfds [fd].events)
890	{	1008	{
891	anfds [fd].events = 0;	1009	anfds [fd].events = 0;
892	anfds [fd].emask = 0;	1010	anfds [fd].emask = 0;
893	fd_change (EV_A_ fd, EV__IOFDSET \| 1);	1011	fd_change (EV_A_ fd, EV__IOFDSET \| EV_ANFD_REIFY);
894	}	1012	}
895	}	1013	}
896		1014
897	/*****************************************************************************/	1015	/*****************************************************************************/
898		1016
…		…
973		1091
974	for (;;)	1092	for (;;)
975	{	1093	{
976	int c = k << 1;	1094	int c = k << 1;
977		1095
978	if (c > N + HEAP0 - 1)	1096	if (c >= N + HEAP0)
979	break;	1097	break;
980		1098
981	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])
982	? 1 : 0;	1100	? 1 : 0;
983		1101
…		…
1019		1137
1020	/* move an element suitably so it is in a correct place */	1138	/* move an element suitably so it is in a correct place */
1021	inline_size void	1139	inline_size void
1022	adjustheap (ANHE *heap, int N, int k)	1140	adjustheap (ANHE *heap, int N, int k)
1023	{	1141	{
1024	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)]))
1025	upheap (heap, k);	1143	upheap (heap, k);
1026	else	1144	else
1027	downheap (heap, N, k);	1145	downheap (heap, N, k);
1028	}	1146	}
1029		1147
…		…
1042	/*****************************************************************************/	1160	/*****************************************************************************/
1043		1161
1044	/* associate signal watchers to a signal signal */	1162	/* associate signal watchers to a signal signal */
1045	typedef struct	1163	typedef struct
1046	{	1164	{
		1165	EV_ATOMIC_T pending;
		1166	#if EV_MULTIPLICITY
		1167	EV_P;
		1168	#endif
1047	WL head;	1169	WL head;
1048	EV_ATOMIC_T gotsig;
1049	} ANSIG;	1170	} ANSIG;
1050		1171
1051	static ANSIG *signals;	1172	static ANSIG signals [EV_NSIG - 1];
1052	static int signalmax;
1053
1054	static EV_ATOMIC_T gotsig;
1055		1173
1056	/*****************************************************************************/	1174	/*****************************************************************************/
1057		1175
1058	/* used to prepare libev internal fd's */	1176	/* used to prepare libev internal fd's */
1059	/* this is not fork-safe */	1177	/* this is not fork-safe */
…		…
1073	evpipe_init (EV_P)	1191	evpipe_init (EV_P)
1074	{	1192	{
1075	if (!ev_is_active (&pipe_w))	1193	if (!ev_is_active (&pipe_w))
1076	{	1194	{
1077	#if EV_USE_EVENTFD	1195	#if EV_USE_EVENTFD
		1196	evfd = eventfd (0, EFD_NONBLOCK \| EFD_CLOEXEC);
		1197	if (evfd < 0 && errno == EINVAL)
1078	if ((evfd = eventfd (0, 0)) >= 0)	1198	evfd = eventfd (0, 0);
		1199
		1200	if (evfd >= 0)
1079	{	1201	{
1080	evpipe [0] = -1;	1202	evpipe [0] = -1;
1081	fd_intern (evfd);	1203	fd_intern (evfd); /* doing it twice doesn't hurt */
1082	ev_io_set (&pipe_w, evfd, EV_READ);	1204	ev_io_set (&pipe_w, evfd, EV_READ);
1083	}	1205	}
1084	else	1206	else
1085	#endif	1207	#endif
1086	{	1208	{
…		…
1123	/* called whenever the libev signal pipe */	1245	/* called whenever the libev signal pipe */
1124	/* got some events (signal, async) */	1246	/* got some events (signal, async) */
1125	static void	1247	static void
1126	pipecb (EV_P_ ev_io *iow, int revents)	1248	pipecb (EV_P_ ev_io *iow, int revents)
1127	{	1249	{
		1250	int i;
		1251
1128	#if EV_USE_EVENTFD	1252	#if EV_USE_EVENTFD
1129	if (evfd >= 0)	1253	if (evfd >= 0)
1130	{	1254	{
1131	uint64_t counter;	1255	uint64_t counter;
1132	read (evfd, &counter, sizeof (uint64_t));	1256	read (evfd, &counter, sizeof (uint64_t));
…		…
1136	{	1260	{
1137	char dummy;	1261	char dummy;
1138	read (evpipe [0], &dummy, 1);	1262	read (evpipe [0], &dummy, 1);
1139	}	1263	}
1140		1264
1141	if (gotsig && ev_is_default_loop (EV_A))	1265	if (sig_pending)
1142	{	1266	{
1143	int signum;	1267	sig_pending = 0;
1144	gotsig = 0;
1145		1268
1146	for (signum = signalmax; signum--; )	1269	for (i = EV_NSIG - 1; i--; )
1147	if (signals [signum].gotsig)	1270	if (expect_false (signals [i].pending))
1148	ev_feed_signal_event (EV_A_ signum + 1);	1271	ev_feed_signal_event (EV_A_ i + 1);
1149	}	1272	}
1150		1273
1151	#if EV_ASYNC_ENABLE	1274	#if EV_ASYNC_ENABLE
1152	if (gotasync)	1275	if (async_pending)
1153	{	1276	{
1154	int i;	1277	async_pending = 0;
1155	gotasync = 0;
1156		1278
1157	for (i = asynccnt; i--; )	1279	for (i = asynccnt; i--; )
1158	if (asyncs [i]->sent)	1280	if (asyncs [i]->sent)
1159	{	1281	{
1160	asyncs [i]->sent = 0;	1282	asyncs [i]->sent = 0;
…		…
1168		1290
1169	static void	1291	static void
1170	ev_sighandler (int signum)	1292	ev_sighandler (int signum)
1171	{	1293	{
1172	#if EV_MULTIPLICITY	1294	#if EV_MULTIPLICITY
1173	struct ev_loop *loop = &default_loop_struct;	1295	EV_P = signals [signum - 1].loop;
1174	#endif	1296	#endif
1175		1297
1176	#if _WIN32	1298	#if _WIN32
1177	signal (signum, ev_sighandler);	1299	signal (signum, ev_sighandler);
1178	#endif	1300	#endif
1179		1301
1180	signals [signum - 1].gotsig = 1;	1302	signals [signum - 1].pending = 1;
1181	evpipe_write (EV_A_ &gotsig);	1303	evpipe_write (EV_A_ &sig_pending);
1182	}	1304	}
1183		1305
1184	void noinline	1306	void noinline
1185	ev_feed_signal_event (EV_P_ int signum)	1307	ev_feed_signal_event (EV_P_ int signum)
1186	{	1308	{
1187	WL w;	1309	WL w;
1188		1310
		1311	if (expect_false (signum <= 0 \|\| signum > EV_NSIG))
		1312	return;
		1313
		1314	--signum;
		1315
1189	#if EV_MULTIPLICITY	1316	#if EV_MULTIPLICITY
1190	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 */
1191	#endif	1318	/* or, likely more useful, feeding a signal nobody is waiting for */
1192		1319
1193	--signum;	1320	if (expect_false (signals [signum].loop != EV_A))
1194
1195	if (signum < 0 \|\| signum >= signalmax)
1196	return;	1321	return;
		1322	#endif
1197		1323
1198	signals [signum].gotsig = 0;	1324	signals [signum].pending = 0;
1199		1325
1200	for (w = signals [signum].head; w; w = w->next)	1326	for (w = signals [signum].head; w; w = w->next)
1201	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1327	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1202	}	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
1203		1349
1204	/*****************************************************************************/	1350	/*****************************************************************************/
1205		1351
1206	static WL childs [EV_PID_HASHSIZE];	1352	static WL childs [EV_PID_HASHSIZE];
1207		1353
…		…
1352	ev_backend (EV_P)	1498	ev_backend (EV_P)
1353	{	1499	{
1354	return backend;	1500	return backend;
1355	}	1501	}
1356		1502
		1503	#if EV_MINIMAL < 2
1357	unsigned int	1504	unsigned int
1358	ev_loop_count (EV_P)	1505	ev_loop_count (EV_P)
1359	{	1506	{
1360	return loop_count;	1507	return loop_count;
1361	}	1508	}
1362		1509
		1510	unsigned int
		1511	ev_loop_depth (EV_P)
		1512	{
		1513	return loop_depth;
		1514	}
		1515
1363	void	1516	void
1364	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1517	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1365	{	1518	{
1366	io_blocktime = interval;	1519	io_blocktime = interval;
1367	}	1520	}
…		…
1369	void	1522	void
1370	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1523	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1371	{	1524	{
1372	timeout_blocktime = interval;	1525	timeout_blocktime = interval;
1373	}	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
1374		1551
1375	/* initialise a loop structure, must be zero-initialised */	1552	/* initialise a loop structure, must be zero-initialised */
1376	static void noinline	1553	static void noinline
1377	loop_init (EV_P_ unsigned int flags)	1554	loop_init (EV_P_ unsigned int flags)
1378	{	1555	{
…		…
1396	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1573	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1397	have_monotonic = 1;	1574	have_monotonic = 1;
1398	}	1575	}
1399	#endif	1576	#endif
1400		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
1401	ev_rt_now = ev_time ();	1589	ev_rt_now = ev_time ();
1402	mn_now = get_clock ();	1590	mn_now = get_clock ();
1403	now_floor = mn_now;	1591	now_floor = mn_now;
1404	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
1405		1596
1406	io_blocktime = 0.;	1597	io_blocktime = 0.;
1407	timeout_blocktime = 0.;	1598	timeout_blocktime = 0.;
1408	backend = 0;	1599	backend = 0;
1409	backend_fd = -1;	1600	backend_fd = -1;
1410	gotasync = 0;	1601	sig_pending = 0;
		1602	#if EV_ASYNC_ENABLE
		1603	async_pending = 0;
		1604	#endif
1411	#if EV_USE_INOTIFY	1605	#if EV_USE_INOTIFY
1412	fs_fd = -2;	1606	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1413	#endif	1607	#endif
1414		1608	#if EV_USE_SIGNALFD
1415	/* pid check not overridable via env */	1609	sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2;
1416	#ifndef _WIN32
1417	if (flags & EVFLAG_FORKCHECK)
1418	curpid = getpid ();
1419	#endif	1610	#endif
1420
1421	if (!(flags & EVFLAG_NOENV)
1422	&& !enable_secure ()
1423	&& getenv ("LIBEV_FLAGS"))
1424	flags = atoi (getenv ("LIBEV_FLAGS"));
1425		1611
1426	if (!(flags & 0x0000ffffU))	1612	if (!(flags & 0x0000ffffU))
1427	flags \|= ev_recommended_backends ();	1613	flags \|= ev_recommended_backends ();
1428		1614
1429	#if EV_USE_PORT	1615	#if EV_USE_PORT
…		…
1455	{	1641	{
1456	int i;	1642	int i;
1457		1643
1458	if (ev_is_active (&pipe_w))	1644	if (ev_is_active (&pipe_w))
1459	{	1645	{
1460	ev_ref (EV_A); /* signal watcher */	1646	/ev_ref (EV_A);/
1461	ev_io_stop (EV_A_ &pipe_w);	1647	/ev_io_stop (EV_A_ &pipe_w);/
1462		1648
1463	#if EV_USE_EVENTFD	1649	#if EV_USE_EVENTFD
1464	if (evfd >= 0)	1650	if (evfd >= 0)
1465	close (evfd);	1651	close (evfd);
1466	#endif	1652	#endif
1467		1653
1468	if (evpipe [0] >= 0)	1654	if (evpipe [0] >= 0)
1469	{	1655	{
1470	close (evpipe [0]);	1656	EV_WIN32_CLOSE_FD (evpipe [0]);
1471	close (evpipe [1]);	1657	EV_WIN32_CLOSE_FD (evpipe [1]);
1472	}	1658	}
1473	}	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
1474		1670
1475	#if EV_USE_INOTIFY	1671	#if EV_USE_INOTIFY
1476	if (fs_fd >= 0)	1672	if (fs_fd >= 0)
1477	close (fs_fd);	1673	close (fs_fd);
1478	#endif	1674	#endif
…		…
1502	#if EV_IDLE_ENABLE	1698	#if EV_IDLE_ENABLE
1503	array_free (idle, [i]);	1699	array_free (idle, [i]);
1504	#endif	1700	#endif
1505	}	1701	}
1506		1702
1507	ev_free (anfds); anfdmax = 0;	1703	ev_free (anfds); anfds = 0; anfdmax = 0;
1508		1704
1509	/* have to use the microsoft-never-gets-it-right macro */	1705	/* have to use the microsoft-never-gets-it-right macro */
1510	array_free (rfeed, EMPTY);	1706	array_free (rfeed, EMPTY);
1511	array_free (fdchange, EMPTY);	1707	array_free (fdchange, EMPTY);
1512	array_free (timer, EMPTY);	1708	array_free (timer, EMPTY);
…		…
1547		1743
1548	if (ev_is_active (&pipe_w))	1744	if (ev_is_active (&pipe_w))
1549	{	1745	{
1550	/* this "locks" the handlers against writing to the pipe */	1746	/* this "locks" the handlers against writing to the pipe */
1551	/* while we modify the fd vars */	1747	/* while we modify the fd vars */
1552	gotsig = 1;	1748	sig_pending = 1;
1553	#if EV_ASYNC_ENABLE	1749	#if EV_ASYNC_ENABLE
1554	gotasync = 1;	1750	async_pending = 1;
1555	#endif	1751	#endif
1556		1752
1557	ev_ref (EV_A);	1753	ev_ref (EV_A);
1558	ev_io_stop (EV_A_ &pipe_w);	1754	ev_io_stop (EV_A_ &pipe_w);
1559		1755
…		…
1562	close (evfd);	1758	close (evfd);
1563	#endif	1759	#endif
1564		1760
1565	if (evpipe [0] >= 0)	1761	if (evpipe [0] >= 0)
1566	{	1762	{
1567	close (evpipe [0]);	1763	EV_WIN32_CLOSE_FD (evpipe [0]);
1568	close (evpipe [1]);	1764	EV_WIN32_CLOSE_FD (evpipe [1]);
1569	}	1765	}
1570		1766
1571	evpipe_init (EV_A);	1767	evpipe_init (EV_A);
1572	/* now iterate over everything, in case we missed something */	1768	/* now iterate over everything, in case we missed something */
1573	pipecb (EV_A_ &pipe_w, EV_READ);	1769	pipecb (EV_A_ &pipe_w, EV_READ);
…		…
1579	#if EV_MULTIPLICITY	1775	#if EV_MULTIPLICITY
1580		1776
1581	struct ev_loop *	1777	struct ev_loop *
1582	ev_loop_new (unsigned int flags)	1778	ev_loop_new (unsigned int flags)
1583	{	1779	{
1584	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));
1585		1781
1586	memset (loop, 0, sizeof (struct ev_loop));	1782	memset (EV_A, 0, sizeof (struct ev_loop));
1587
1588	loop_init (EV_A_ flags);	1783	loop_init (EV_A_ flags);
1589		1784
1590	if (ev_backend (EV_A))	1785	if (ev_backend (EV_A))
1591	return loop;	1786	return EV_A;
1592		1787
1593	return 0;	1788	return 0;
1594	}	1789	}
1595		1790
1596	void	1791	void
…		…
1603	void	1798	void
1604	ev_loop_fork (EV_P)	1799	ev_loop_fork (EV_P)
1605	{	1800	{
1606	postfork = 1; /* must be in line with ev_default_fork */	1801	postfork = 1; /* must be in line with ev_default_fork */
1607	}	1802	}
		1803	#endif /* multiplicity */
1608		1804
1609	#if EV_VERIFY	1805	#if EV_VERIFY
1610	static void noinline	1806	static void noinline
1611	verify_watcher (EV_P_ W w)	1807	verify_watcher (EV_P_ W w)
1612	{	1808	{
…		…
1640	verify_watcher (EV_A_ ws [cnt]);	1836	verify_watcher (EV_A_ ws [cnt]);
1641	}	1837	}
1642	}	1838	}
1643	#endif	1839	#endif
1644		1840
		1841	#if EV_MINIMAL < 2
1645	void	1842	void
1646	ev_loop_verify (EV_P)	1843	ev_loop_verify (EV_P)
1647	{	1844	{
1648	#if EV_VERIFY	1845	#if EV_VERIFY
1649	int i;	1846	int i;
…		…
1698	assert (checkmax >= checkcnt);	1895	assert (checkmax >= checkcnt);
1699	array_verify (EV_A_ (W *)checks, checkcnt);	1896	array_verify (EV_A_ (W *)checks, checkcnt);
1700		1897
1701	# if 0	1898	# if 0
1702	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)
1703	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)	1900	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1704	# endif
1705	#endif	1901	# endif
		1902	#endif
1706	}	1903	}
1707		1904	#endif
1708	#endif /* multiplicity */
1709		1905
1710	#if EV_MULTIPLICITY	1906	#if EV_MULTIPLICITY
1711	struct ev_loop *	1907	struct ev_loop *
1712	ev_default_loop_init (unsigned int flags)	1908	ev_default_loop_init (unsigned int flags)
1713	#else	1909	#else
…		…
1716	#endif	1912	#endif
1717	{	1913	{
1718	if (!ev_default_loop_ptr)	1914	if (!ev_default_loop_ptr)
1719	{	1915	{
1720	#if EV_MULTIPLICITY	1916	#if EV_MULTIPLICITY
1721	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1917	EV_P = ev_default_loop_ptr = &default_loop_struct;
1722	#else	1918	#else
1723	ev_default_loop_ptr = 1;	1919	ev_default_loop_ptr = 1;
1724	#endif	1920	#endif
1725		1921
1726	loop_init (EV_A_ flags);	1922	loop_init (EV_A_ flags);
…		…
1743		1939
1744	void	1940	void
1745	ev_default_destroy (void)	1941	ev_default_destroy (void)
1746	{	1942	{
1747	#if EV_MULTIPLICITY	1943	#if EV_MULTIPLICITY
1748	struct ev_loop *loop = ev_default_loop_ptr;	1944	EV_P = ev_default_loop_ptr;
1749	#endif	1945	#endif
1750		1946
1751	ev_default_loop_ptr = 0;	1947	ev_default_loop_ptr = 0;
1752		1948
1753	#ifndef _WIN32	1949	#ifndef _WIN32
…		…
1760		1956
1761	void	1957	void
1762	ev_default_fork (void)	1958	ev_default_fork (void)
1763	{	1959	{
1764	#if EV_MULTIPLICITY	1960	#if EV_MULTIPLICITY
1765	struct ev_loop *loop = ev_default_loop_ptr;	1961	EV_P = ev_default_loop_ptr;
1766	#endif	1962	#endif
1767		1963
1768	postfork = 1; /* must be in line with ev_loop_fork */	1964	postfork = 1; /* must be in line with ev_loop_fork */
1769	}	1965	}
1770		1966
…		…
1774	ev_invoke (EV_P_ void *w, int revents)	1970	ev_invoke (EV_P_ void *w, int revents)
1775	{	1971	{
1776	EV_CB_INVOKE ((W)w, revents);	1972	EV_CB_INVOKE ((W)w, revents);
1777	}	1973	}
1778		1974
1779	inline_speed void	1975	unsigned int
1780	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)
1781	{	1989	{
1782	int pri;	1990	int pri;
1783		1991
1784	for (pri = NUMPRI; pri--; )	1992	for (pri = NUMPRI; pri--; )
1785	while (pendingcnt [pri])	1993	while (pendingcnt [pri])
…		…
2020		2228
2021	mn_now = ev_rt_now;	2229	mn_now = ev_rt_now;
2022	}	2230	}
2023	}	2231	}
2024		2232
2025	static int loop_done;
2026
2027	void	2233	void
2028	ev_loop (EV_P_ int flags)	2234	ev_loop (EV_P_ int flags)
2029	{	2235	{
		2236	#if EV_MINIMAL < 2
		2237	++loop_depth;
		2238	#endif
		2239
		2240	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2241
2030	loop_done = EVUNLOOP_CANCEL;	2242	loop_done = EVUNLOOP_CANCEL;
2031		2243
2032	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 */
2033		2245
2034	do	2246	do
2035	{	2247	{
2036	#if EV_VERIFY >= 2	2248	#if EV_VERIFY >= 2
2037	ev_loop_verify (EV_A);	2249	ev_loop_verify (EV_A);
…		…
2050	/* we might have forked, so queue fork handlers */	2262	/* we might have forked, so queue fork handlers */
2051	if (expect_false (postfork))	2263	if (expect_false (postfork))
2052	if (forkcnt)	2264	if (forkcnt)
2053	{	2265	{
2054	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2266	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2055	call_pending (EV_A);	2267	EV_INVOKE_PENDING;
2056	}	2268	}
2057	#endif	2269	#endif
2058		2270
2059	/* queue prepare watchers (and execute them) */	2271	/* queue prepare watchers (and execute them) */
2060	if (expect_false (preparecnt))	2272	if (expect_false (preparecnt))
2061	{	2273	{
2062	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2274	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2063	call_pending (EV_A);	2275	EV_INVOKE_PENDING;
2064	}	2276	}
		2277
		2278	if (expect_false (loop_done))
		2279	break;
2065		2280
2066	/* we might have forked, so reify kernel state if necessary */	2281	/* we might have forked, so reify kernel state if necessary */
2067	if (expect_false (postfork))	2282	if (expect_false (postfork))
2068	loop_fork (EV_A);	2283	loop_fork (EV_A);
2069		2284
…		…
2117	waittime -= sleeptime;	2332	waittime -= sleeptime;
2118	}	2333	}
2119	}	2334	}
2120	}	2335	}
2121		2336
		2337	#if EV_MINIMAL < 2
2122	++loop_count;	2338	++loop_count;
		2339	#endif
		2340	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2123	backend_poll (EV_A_ waittime);	2341	backend_poll (EV_A_ waittime);
		2342	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2124		2343
2125	/* update ev_rt_now, do magic */	2344	/* update ev_rt_now, do magic */
2126	time_update (EV_A_ waittime + sleeptime);	2345	time_update (EV_A_ waittime + sleeptime);
2127	}	2346	}
2128		2347
…		…
2139		2358
2140	/* queue check watchers, to be executed first */	2359	/* queue check watchers, to be executed first */
2141	if (expect_false (checkcnt))	2360	if (expect_false (checkcnt))
2142	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2361	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2143		2362
2144	call_pending (EV_A);	2363	EV_INVOKE_PENDING;
2145	}	2364	}
2146	while (expect_true (	2365	while (expect_true (
2147	activecnt	2366	activecnt
2148	&& !loop_done	2367	&& !loop_done
2149	&& !(flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK))	2368	&& !(flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK))
2150	));	2369	));
2151		2370
2152	if (loop_done == EVUNLOOP_ONE)	2371	if (loop_done == EVUNLOOP_ONE)
2153	loop_done = EVUNLOOP_CANCEL;	2372	loop_done = EVUNLOOP_CANCEL;
		2373
		2374	#if EV_MINIMAL < 2
		2375	--loop_depth;
		2376	#endif
2154	}	2377	}
2155		2378
2156	void	2379	void
2157	ev_unloop (EV_P_ int how)	2380	ev_unloop (EV_P_ int how)
2158	{	2381	{
…		…
2209	inline_size void	2432	inline_size void
2210	wlist_del (WL *head, WL elem)	2433	wlist_del (WL *head, WL elem)
2211	{	2434	{
2212	while (*head)	2435	while (*head)
2213	{	2436	{
2214	if (*head == elem)	2437	if (expect_true (*head == elem))
2215	{	2438	{
2216	*head = elem->next;	2439	*head = elem->next;
2217	return;	2440	break;
2218	}	2441	}
2219		2442
2220	head = &(*head)->next;	2443	head = &(*head)->next;
2221	}	2444	}
2222	}	2445	}
…		…
2250	}	2473	}
2251		2474
2252	inline_size void	2475	inline_size void
2253	pri_adjust (EV_P_ W w)	2476	pri_adjust (EV_P_ W w)
2254	{	2477	{
2255	int pri = w->priority;	2478	int pri = ev_priority (w);
2256	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2479	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2257	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2480	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2258	w->priority = pri;	2481	ev_set_priority (w, pri);
2259	}	2482	}
2260		2483
2261	inline_speed void	2484	inline_speed void
2262	ev_start (EV_P_ W w, int active)	2485	ev_start (EV_P_ W w, int active)
2263	{	2486	{
…		…
2290		2513
2291	ev_start (EV_A_ (W)w, 1);	2514	ev_start (EV_A_ (W)w, 1);
2292	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2515	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2293	wlist_add (&anfds[fd].head, (WL)w);	2516	wlist_add (&anfds[fd].head, (WL)w);
2294		2517
2295	fd_change (EV_A_ fd, w->events & EV__IOFDSET \| 1);	2518	fd_change (EV_A_ fd, w->events & EV__IOFDSET \| EV_ANFD_REIFY);
2296	w->events &= ~EV__IOFDSET;	2519	w->events &= ~EV__IOFDSET;
2297		2520
2298	EV_FREQUENT_CHECK;	2521	EV_FREQUENT_CHECK;
2299	}	2522	}
2300		2523
…		…
2394	}	2617	}
2395		2618
2396	EV_FREQUENT_CHECK;	2619	EV_FREQUENT_CHECK;
2397	}	2620	}
2398		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
2399	#if EV_PERIODIC_ENABLE	2628	#if EV_PERIODIC_ENABLE
2400	void noinline	2629	void noinline
2401	ev_periodic_start (EV_P_ ev_periodic *w)	2630	ev_periodic_start (EV_P_ ev_periodic *w)
2402	{	2631	{
2403	if (expect_false (ev_is_active (w)))	2632	if (expect_false (ev_is_active (w)))
…		…
2470	#endif	2699	#endif
2471		2700
2472	void noinline	2701	void noinline
2473	ev_signal_start (EV_P_ ev_signal *w)	2702	ev_signal_start (EV_P_ ev_signal *w)
2474	{	2703	{
2475	#if EV_MULTIPLICITY
2476	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2477	#endif
2478	if (expect_false (ev_is_active (w)))	2704	if (expect_false (ev_is_active (w)))
2479	return;	2705	return;
2480		2706
2481	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));
2482		2708
2483	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));
2484		2712
2485	EV_FREQUENT_CHECK;	2713	signals [w->signum - 1].loop = EV_A;
		2714	#endif
2486		2715
		2716	EV_FREQUENT_CHECK;
		2717
		2718	#if EV_USE_SIGNALFD
		2719	if (sigfd == -2)
2487	{	2720	{
2488	#ifndef _WIN32	2721	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK \| SFD_CLOEXEC);
2489	sigset_t full, prev;	2722	if (sigfd < 0 && errno == EINVAL)
2490	sigfillset (&full);	2723	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2491	sigprocmask (SIG_SETMASK, &full, &prev);
2492	#endif
2493		2724
2494	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 */
2495		2728
2496	#ifndef _WIN32	2729	sigemptyset (&sigfd_set);
2497	sigprocmask (SIG_SETMASK, &prev, 0);	2730
2498	#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	}
2499	}	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
2500		2747
2501	ev_start (EV_A_ (W)w, 1);	2748	ev_start (EV_A_ (W)w, 1);
2502	wlist_add (&signals [w->signum - 1].head, (WL)w);	2749	wlist_add (&signals [w->signum - 1].head, (WL)w);
2503		2750
2504	if (!((WL)w)->next)	2751	if (!((WL)w)->next)
		2752	# if EV_USE_SIGNALFD
		2753	if (sigfd < 0) /TODO/
		2754	# endif
2505	{	2755	{
2506	#if _WIN32	2756	# if _WIN32
2507	signal (w->signum, ev_sighandler);	2757	signal (w->signum, ev_sighandler);
2508	#else	2758	# else
2509	struct sigaction sa;	2759	struct sigaction sa;
		2760
		2761	evpipe_init (EV_A);
		2762
2510	sa.sa_handler = ev_sighandler;	2763	sa.sa_handler = ev_sighandler;
2511	sigfillset (&sa.sa_mask);	2764	sigfillset (&sa.sa_mask);
2512	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 */
2513	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);
2514	#endif	2771	#endif
2515	}	2772	}
2516		2773
2517	EV_FREQUENT_CHECK;	2774	EV_FREQUENT_CHECK;
2518	}	2775	}
2519		2776
2520	void noinline	2777	void noinline
…		…
2528		2785
2529	wlist_del (&signals [w->signum - 1].head, (WL)w);	2786	wlist_del (&signals [w->signum - 1].head, (WL)w);
2530	ev_stop (EV_A_ (W)w);	2787	ev_stop (EV_A_ (W)w);
2531		2788
2532	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
2533	signal (w->signum, SIG_DFL);	2805	signal (w->signum, SIG_DFL);
		2806	}
2534		2807
2535	EV_FREQUENT_CHECK;	2808	EV_FREQUENT_CHECK;
2536	}	2809	}
2537		2810
2538	void	2811	void
…		…
2618	}	2891	}
2619	}	2892	}
2620		2893
2621	if (w->wd >= 0)	2894	if (w->wd >= 0)
2622	{	2895	{
		2896	struct statfs sfs;
		2897
2623	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);
2624		2899
2625	/* 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 */
2626	/* 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 */
2627	/* also do poll on <2.6.25, but with normal frequency */	2902	/* also do poll on <2.6.25, but with normal frequency */
2628	struct statfs sfs;
2629		2903
2630	if (fs_2625 && !statfs (w->path, &sfs))	2904	if (fs_2625 && !statfs (w->path, &sfs))
2631	if (sfs.f_type == 0x1373 /* devfs */	2905	if (sfs.f_type == 0x1373 /* devfs */
2632	\|\| sfs.f_type == 0xEF53 /* ext2/3 */	2906	\|\| sfs.f_type == 0xEF53 /* ext2/3 */
2633	\|\| sfs.f_type == 0x3153464a /* jfs */	2907	\|\| sfs.f_type == 0x3153464a /* jfs */
…		…
2722	return;	2996	return;
2723		2997
2724	fs_2625 = 1;	2998	fs_2625 = 1;
2725	}	2999	}
2726		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
2727	inline_size void	3012	inline_size void
2728	infy_init (EV_P)	3013	infy_init (EV_P)
2729	{	3014	{
2730	if (fs_fd != -2)	3015	if (fs_fd != -2)
2731	return;	3016	return;
2732		3017
2733	fs_fd = -1;	3018	fs_fd = -1;
2734		3019
2735	check_2625 (EV_A);	3020	check_2625 (EV_A);
2736		3021
2737	fs_fd = inotify_init ();	3022	fs_fd = infy_newfd ();
2738		3023
2739	if (fs_fd >= 0)	3024	if (fs_fd >= 0)
2740	{	3025	{
		3026	fd_intern (fs_fd);
2741	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3027	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2742	ev_set_priority (&fs_w, EV_MAXPRI);	3028	ev_set_priority (&fs_w, EV_MAXPRI);
2743	ev_io_start (EV_A_ &fs_w);	3029	ev_io_start (EV_A_ &fs_w);
2744	}	3030	}
2745	}	3031	}
…		…
2750	int slot;	3036	int slot;
2751		3037
2752	if (fs_fd < 0)	3038	if (fs_fd < 0)
2753	return;	3039	return;
2754		3040
		3041	ev_io_stop (EV_A_ &fs_w);
2755	close (fs_fd);	3042	close (fs_fd);
2756	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	}
2757		3051
2758	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3052	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2759	{	3053	{
2760	WL w_ = fs_hash [slot].head;	3054	WL w_ = fs_hash [slot].head;
2761	fs_hash [slot].head = 0;	3055	fs_hash [slot].head = 0;
…		…
3018	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3312	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3019	{	3313	{
3020	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));	3314	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
3021		3315
3022	{	3316	{
3023	struct ev_loop *loop = w->other;	3317	EV_P = w->other;
3024		3318
3025	while (fdchangecnt)	3319	while (fdchangecnt)
3026	{	3320	{
3027	fd_reify (EV_A);	3321	fd_reify (EV_A);
3028	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3322	ev_loop (EV_A_ EVLOOP_NONBLOCK);
…		…
3036	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));
3037		3331
3038	ev_embed_stop (EV_A_ w);	3332	ev_embed_stop (EV_A_ w);
3039		3333
3040	{	3334	{
3041	struct ev_loop *loop = w->other;	3335	EV_P = w->other;
3042		3336
3043	ev_loop_fork (EV_A);	3337	ev_loop_fork (EV_A);
3044	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3338	ev_loop (EV_A_ EVLOOP_NONBLOCK);
3045	}	3339	}
3046		3340
…		…
3060	{	3354	{
3061	if (expect_false (ev_is_active (w)))	3355	if (expect_false (ev_is_active (w)))
3062	return;	3356	return;
3063		3357
3064	{	3358	{
3065	struct ev_loop *loop = w->other;	3359	EV_P = w->other;
3066	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 ()));
3067	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);
3068	}	3362	}
3069		3363
3070	EV_FREQUENT_CHECK;	3364	EV_FREQUENT_CHECK;
…		…
3182		3476
3183	void	3477	void
3184	ev_async_send (EV_P_ ev_async *w)	3478	ev_async_send (EV_P_ ev_async *w)
3185	{	3479	{
3186	w->sent = 1;	3480	w->sent = 1;
3187	evpipe_write (EV_A_ &gotasync);	3481	evpipe_write (EV_A_ &async_pending);
3188	}	3482	}
3189	#endif	3483	#endif
3190		3484
3191	/*****************************************************************************/	3485	/*****************************************************************************/
3192		3486
…		…
3341	if (types & EV_CHECK)	3635	if (types & EV_CHECK)
3342	for (i = checkcnt; i--; )	3636	for (i = checkcnt; i--; )
3343	cb (EV_A_ EV_CHECK, checks [i]);	3637	cb (EV_A_ EV_CHECK, checks [i]);
3344		3638
3345	if (types & EV_SIGNAL)	3639	if (types & EV_SIGNAL)
3346	for (i = 0; i < signalmax; ++i)	3640	for (i = 0; i < EV_NSIG - 1; ++i)
3347	for (wl = signals [i].head; wl; )	3641	for (wl = signals [i].head; wl; )
3348	{	3642	{
3349	wn = wl->next;	3643	wn = wl->next;
3350	cb (EV_A_ EV_SIGNAL, wl);	3644	cb (EV_A_ EV_SIGNAL, wl);
3351	wl = wn;	3645	wl = wn;

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Comparing libev/ev.c (file contents): Revision 1.293 by root, Mon Jun 29 18:46:52 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 1.293 by root, Mon Jun 29 18:46:52 2009 UTC vs.
Revision 1.316 by root, Fri Sep 18 21:02:12 2009 UTC