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

Comparing libev/ev.c (file contents):
Revision 1.291 by root, Mon Jun 29 04:44:18 2009 UTC vs.
Revision 1.317 by root, Sat Nov 14 00:15:21 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
		680	#ifndef EV_HAVE_EV_TIME
569	ev_tstamp	681	ev_tstamp
570	ev_time (void)	682	ev_time (void)
571	{	683	{
572	#if EV_USE_REALTIME	684	#if EV_USE_REALTIME
573	if (expect_true (have_realtime))	685	if (expect_true (have_realtime))
…		…
580		692
581	struct timeval tv;	693	struct timeval tv;
582	gettimeofday (&tv, 0);	694	gettimeofday (&tv, 0);
583	return tv.tv_sec + tv.tv_usec * 1e-6;	695	return tv.tv_sec + tv.tv_usec * 1e-6;
584	}	696	}
		697	#endif
585		698
586	inline_size ev_tstamp	699	inline_size ev_tstamp
587	get_clock (void)	700	get_clock (void)
588	{	701	{
589	#if EV_USE_MONOTONIC	702	#if EV_USE_MONOTONIC
…		…
625		738
626	tv.tv_sec = (time_t)delay;	739	tv.tv_sec = (time_t)delay;
627	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	740	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
628		741
629	/* 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 */
630	/* somehting nto guaranteed by newer posix versions, but guaranteed */	743	/* something not guaranteed by newer posix versions, but guaranteed */
631	/* by older ones */	744	/* by older ones */
632	select (0, 0, 0, 0, &tv);	745	select (0, 0, 0, 0, &tv);
633	#endif	746	#endif
634	}	747	}
635	}	748	}
…		…
743	}	856	}
744		857
745	/*****************************************************************************/	858	/*****************************************************************************/
746		859
747	inline_speed void	860	inline_speed void
748	fd_event (EV_P_ int fd, int revents)	861	fd_event_nc (EV_P_ int fd, int revents)
749	{	862	{
750	ANFD *anfd = anfds + fd;	863	ANFD *anfd = anfds + fd;
751	ev_io *w;	864	ev_io *w;
752		865
753	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)
…		…
757	if (ev)	870	if (ev)
758	ev_feed_event (EV_A_ (W)w, ev);	871	ev_feed_event (EV_A_ (W)w, ev);
759	}	872	}
760	}	873	}
761		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
762	void	886	void
763	ev_feed_fd_event (EV_P_ int fd, int revents)	887	ev_feed_fd_event (EV_P_ int fd, int revents)
764	{	888	{
765	if (fd >= 0 && fd < anfdmax)	889	if (fd >= 0 && fd < anfdmax)
766	fd_event (EV_A_ fd, revents);	890	fd_event_nc (EV_A_ fd, revents);
767	}	891	}
768		892
769	/* make sure the external fd watch events are in-sync */	893	/* make sure the external fd watch events are in-sync */
770	/* with the kernel/libev internal state */	894	/* with the kernel/libev internal state */
771	inline_size void	895	inline_size void
…		…
786		910
787	#if EV_SELECT_IS_WINSOCKET	911	#if EV_SELECT_IS_WINSOCKET
788	if (events)	912	if (events)
789	{	913	{
790	unsigned long arg;	914	unsigned long arg;
791	#ifdef EV_FD_TO_WIN32_HANDLE
792	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	915	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
793	#else
794	anfd->handle = _get_osfhandle (fd);
795	#endif
796	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));
797	}	917	}
798	#endif	918	#endif
799		919
800	{	920	{
…		…
871		991
872	for (fd = anfdmax; fd--; )	992	for (fd = anfdmax; fd--; )
873	if (anfds [fd].events)	993	if (anfds [fd].events)
874	{	994	{
875	fd_kill (EV_A_ fd);	995	fd_kill (EV_A_ fd);
876	return;	996	break;
877	}	997	}
878	}	998	}
879		999
880	/* 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 */
881	static void noinline	1001	static void noinline
…		…
886	for (fd = 0; fd < anfdmax; ++fd)	1006	for (fd = 0; fd < anfdmax; ++fd)
887	if (anfds [fd].events)	1007	if (anfds [fd].events)
888	{	1008	{
889	anfds [fd].events = 0;	1009	anfds [fd].events = 0;
890	anfds [fd].emask = 0;	1010	anfds [fd].emask = 0;
891	fd_change (EV_A_ fd, EV__IOFDSET \| 1);	1011	fd_change (EV_A_ fd, EV__IOFDSET \| EV_ANFD_REIFY);
892	}	1012	}
893	}	1013	}
894		1014
895	/*****************************************************************************/	1015	/*****************************************************************************/
896		1016
…		…
971		1091
972	for (;;)	1092	for (;;)
973	{	1093	{
974	int c = k << 1;	1094	int c = k << 1;
975		1095
976	if (c > N + HEAP0 - 1)	1096	if (c >= N + HEAP0)
977	break;	1097	break;
978		1098
979	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])
980	? 1 : 0;	1100	? 1 : 0;
981		1101
…		…
1017		1137
1018	/* move an element suitably so it is in a correct place */	1138	/* move an element suitably so it is in a correct place */
1019	inline_size void	1139	inline_size void
1020	adjustheap (ANHE *heap, int N, int k)	1140	adjustheap (ANHE *heap, int N, int k)
1021	{	1141	{
1022	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)]))
1023	upheap (heap, k);	1143	upheap (heap, k);
1024	else	1144	else
1025	downheap (heap, N, k);	1145	downheap (heap, N, k);
1026	}	1146	}
1027		1147
…		…
1040	/*****************************************************************************/	1160	/*****************************************************************************/
1041		1161
1042	/* associate signal watchers to a signal signal */	1162	/* associate signal watchers to a signal signal */
1043	typedef struct	1163	typedef struct
1044	{	1164	{
		1165	EV_ATOMIC_T pending;
		1166	#if EV_MULTIPLICITY
		1167	EV_P;
		1168	#endif
1045	WL head;	1169	WL head;
1046	EV_ATOMIC_T gotsig;
1047	} ANSIG;	1170	} ANSIG;
1048		1171
1049	static ANSIG *signals;	1172	static ANSIG signals [EV_NSIG - 1];
1050	static int signalmax;
1051
1052	static EV_ATOMIC_T gotsig;
1053		1173
1054	/*****************************************************************************/	1174	/*****************************************************************************/
1055		1175
1056	/* used to prepare libev internal fd's */	1176	/* used to prepare libev internal fd's */
1057	/* this is not fork-safe */	1177	/* this is not fork-safe */
…		…
1071	evpipe_init (EV_P)	1191	evpipe_init (EV_P)
1072	{	1192	{
1073	if (!ev_is_active (&pipe_w))	1193	if (!ev_is_active (&pipe_w))
1074	{	1194	{
1075	#if EV_USE_EVENTFD	1195	#if EV_USE_EVENTFD
		1196	evfd = eventfd (0, EFD_NONBLOCK \| EFD_CLOEXEC);
		1197	if (evfd < 0 && errno == EINVAL)
1076	if ((evfd = eventfd (0, 0)) >= 0)	1198	evfd = eventfd (0, 0);
		1199
		1200	if (evfd >= 0)
1077	{	1201	{
1078	evpipe [0] = -1;	1202	evpipe [0] = -1;
1079	fd_intern (evfd);	1203	fd_intern (evfd); /* doing it twice doesn't hurt */
1080	ev_io_set (&pipe_w, evfd, EV_READ);	1204	ev_io_set (&pipe_w, evfd, EV_READ);
1081	}	1205	}
1082	else	1206	else
1083	#endif	1207	#endif
1084	{	1208	{
…		…
1121	/* called whenever the libev signal pipe */	1245	/* called whenever the libev signal pipe */
1122	/* got some events (signal, async) */	1246	/* got some events (signal, async) */
1123	static void	1247	static void
1124	pipecb (EV_P_ ev_io *iow, int revents)	1248	pipecb (EV_P_ ev_io *iow, int revents)
1125	{	1249	{
		1250	int i;
		1251
1126	#if EV_USE_EVENTFD	1252	#if EV_USE_EVENTFD
1127	if (evfd >= 0)	1253	if (evfd >= 0)
1128	{	1254	{
1129	uint64_t counter;	1255	uint64_t counter;
1130	read (evfd, &counter, sizeof (uint64_t));	1256	read (evfd, &counter, sizeof (uint64_t));
…		…
1134	{	1260	{
1135	char dummy;	1261	char dummy;
1136	read (evpipe [0], &dummy, 1);	1262	read (evpipe [0], &dummy, 1);
1137	}	1263	}
1138		1264
1139	if (gotsig && ev_is_default_loop (EV_A))	1265	if (sig_pending)
1140	{	1266	{
1141	int signum;	1267	sig_pending = 0;
1142	gotsig = 0;
1143		1268
1144	for (signum = signalmax; signum--; )	1269	for (i = EV_NSIG - 1; i--; )
1145	if (signals [signum].gotsig)	1270	if (expect_false (signals [i].pending))
1146	ev_feed_signal_event (EV_A_ signum + 1);	1271	ev_feed_signal_event (EV_A_ i + 1);
1147	}	1272	}
1148		1273
1149	#if EV_ASYNC_ENABLE	1274	#if EV_ASYNC_ENABLE
1150	if (gotasync)	1275	if (async_pending)
1151	{	1276	{
1152	int i;	1277	async_pending = 0;
1153	gotasync = 0;
1154		1278
1155	for (i = asynccnt; i--; )	1279	for (i = asynccnt; i--; )
1156	if (asyncs [i]->sent)	1280	if (asyncs [i]->sent)
1157	{	1281	{
1158	asyncs [i]->sent = 0;	1282	asyncs [i]->sent = 0;
…		…
1166		1290
1167	static void	1291	static void
1168	ev_sighandler (int signum)	1292	ev_sighandler (int signum)
1169	{	1293	{
1170	#if EV_MULTIPLICITY	1294	#if EV_MULTIPLICITY
1171	struct ev_loop *loop = &default_loop_struct;	1295	EV_P = signals [signum - 1].loop;
1172	#endif	1296	#endif
1173		1297
1174	#if _WIN32	1298	#if _WIN32
1175	signal (signum, ev_sighandler);	1299	signal (signum, ev_sighandler);
1176	#endif	1300	#endif
1177		1301
1178	signals [signum - 1].gotsig = 1;	1302	signals [signum - 1].pending = 1;
1179	evpipe_write (EV_A_ &gotsig);	1303	evpipe_write (EV_A_ &sig_pending);
1180	}	1304	}
1181		1305
1182	void noinline	1306	void noinline
1183	ev_feed_signal_event (EV_P_ int signum)	1307	ev_feed_signal_event (EV_P_ int signum)
1184	{	1308	{
1185	WL w;	1309	WL w;
1186		1310
		1311	if (expect_false (signum <= 0 \|\| signum > EV_NSIG))
		1312	return;
		1313
		1314	--signum;
		1315
1187	#if EV_MULTIPLICITY	1316	#if EV_MULTIPLICITY
1188	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 */
1189	#endif	1318	/* or, likely more useful, feeding a signal nobody is waiting for */
1190		1319
1191	--signum;	1320	if (expect_false (signals [signum].loop != EV_A))
1192
1193	if (signum < 0 \|\| signum >= signalmax)
1194	return;	1321	return;
		1322	#endif
1195		1323
1196	signals [signum].gotsig = 0;	1324	signals [signum].pending = 0;
1197		1325
1198	for (w = signals [signum].head; w; w = w->next)	1326	for (w = signals [signum].head; w; w = w->next)
1199	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1327	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1200	}	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
1201		1349
1202	/*****************************************************************************/	1350	/*****************************************************************************/
1203		1351
1204	static WL childs [EV_PID_HASHSIZE];	1352	static WL childs [EV_PID_HASHSIZE];
1205		1353
…		…
1350	ev_backend (EV_P)	1498	ev_backend (EV_P)
1351	{	1499	{
1352	return backend;	1500	return backend;
1353	}	1501	}
1354		1502
		1503	#if EV_MINIMAL < 2
1355	unsigned int	1504	unsigned int
1356	ev_loop_count (EV_P)	1505	ev_loop_count (EV_P)
1357	{	1506	{
1358	return loop_count;	1507	return loop_count;
1359	}	1508	}
1360		1509
		1510	unsigned int
		1511	ev_loop_depth (EV_P)
		1512	{
		1513	return loop_depth;
		1514	}
		1515
1361	void	1516	void
1362	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1517	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1363	{	1518	{
1364	io_blocktime = interval;	1519	io_blocktime = interval;
1365	}	1520	}
…		…
1367	void	1522	void
1368	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1523	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1369	{	1524	{
1370	timeout_blocktime = interval;	1525	timeout_blocktime = interval;
1371	}	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
1372		1551
1373	/* initialise a loop structure, must be zero-initialised */	1552	/* initialise a loop structure, must be zero-initialised */
1374	static void noinline	1553	static void noinline
1375	loop_init (EV_P_ unsigned int flags)	1554	loop_init (EV_P_ unsigned int flags)
1376	{	1555	{
…		…
1394	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1573	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1395	have_monotonic = 1;	1574	have_monotonic = 1;
1396	}	1575	}
1397	#endif	1576	#endif
1398		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
1399	ev_rt_now = ev_time ();	1589	ev_rt_now = ev_time ();
1400	mn_now = get_clock ();	1590	mn_now = get_clock ();
1401	now_floor = mn_now;	1591	now_floor = mn_now;
1402	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
1403		1596
1404	io_blocktime = 0.;	1597	io_blocktime = 0.;
1405	timeout_blocktime = 0.;	1598	timeout_blocktime = 0.;
1406	backend = 0;	1599	backend = 0;
1407	backend_fd = -1;	1600	backend_fd = -1;
1408	gotasync = 0;	1601	sig_pending = 0;
		1602	#if EV_ASYNC_ENABLE
		1603	async_pending = 0;
		1604	#endif
1409	#if EV_USE_INOTIFY	1605	#if EV_USE_INOTIFY
1410	fs_fd = -2;	1606	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1411	#endif	1607	#endif
1412		1608	#if EV_USE_SIGNALFD
1413	/* pid check not overridable via env */	1609	sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2;
1414	#ifndef _WIN32
1415	if (flags & EVFLAG_FORKCHECK)
1416	curpid = getpid ();
1417	#endif	1610	#endif
1418
1419	if (!(flags & EVFLAG_NOENV)
1420	&& !enable_secure ()
1421	&& getenv ("LIBEV_FLAGS"))
1422	flags = atoi (getenv ("LIBEV_FLAGS"));
1423		1611
1424	if (!(flags & 0x0000ffffU))	1612	if (!(flags & 0x0000ffffU))
1425	flags \|= ev_recommended_backends ();	1613	flags \|= ev_recommended_backends ();
1426		1614
1427	#if EV_USE_PORT	1615	#if EV_USE_PORT
…		…
1453	{	1641	{
1454	int i;	1642	int i;
1455		1643
1456	if (ev_is_active (&pipe_w))	1644	if (ev_is_active (&pipe_w))
1457	{	1645	{
1458	ev_ref (EV_A); /* signal watcher */	1646	/ev_ref (EV_A);/
1459	ev_io_stop (EV_A_ &pipe_w);	1647	/ev_io_stop (EV_A_ &pipe_w);/
1460		1648
1461	#if EV_USE_EVENTFD	1649	#if EV_USE_EVENTFD
1462	if (evfd >= 0)	1650	if (evfd >= 0)
1463	close (evfd);	1651	close (evfd);
1464	#endif	1652	#endif
1465		1653
1466	if (evpipe [0] >= 0)	1654	if (evpipe [0] >= 0)
1467	{	1655	{
1468	close (evpipe [0]);	1656	EV_WIN32_CLOSE_FD (evpipe [0]);
1469	close (evpipe [1]);	1657	EV_WIN32_CLOSE_FD (evpipe [1]);
1470	}	1658	}
1471	}	1659	}
		1660
		1661	#if EV_USE_SIGNALFD
		1662	if (ev_is_active (&sigfd_w))
		1663	close (sigfd);
		1664	#endif
1472		1665
1473	#if EV_USE_INOTIFY	1666	#if EV_USE_INOTIFY
1474	if (fs_fd >= 0)	1667	if (fs_fd >= 0)
1475	close (fs_fd);	1668	close (fs_fd);
1476	#endif	1669	#endif
…		…
1500	#if EV_IDLE_ENABLE	1693	#if EV_IDLE_ENABLE
1501	array_free (idle, [i]);	1694	array_free (idle, [i]);
1502	#endif	1695	#endif
1503	}	1696	}
1504		1697
1505	ev_free (anfds); anfdmax = 0;	1698	ev_free (anfds); anfds = 0; anfdmax = 0;
1506		1699
1507	/* have to use the microsoft-never-gets-it-right macro */	1700	/* have to use the microsoft-never-gets-it-right macro */
1508	array_free (rfeed, EMPTY);	1701	array_free (rfeed, EMPTY);
1509	array_free (fdchange, EMPTY);	1702	array_free (fdchange, EMPTY);
1510	array_free (timer, EMPTY);	1703	array_free (timer, EMPTY);
…		…
1545		1738
1546	if (ev_is_active (&pipe_w))	1739	if (ev_is_active (&pipe_w))
1547	{	1740	{
1548	/* this "locks" the handlers against writing to the pipe */	1741	/* this "locks" the handlers against writing to the pipe */
1549	/* while we modify the fd vars */	1742	/* while we modify the fd vars */
1550	gotsig = 1;	1743	sig_pending = 1;
1551	#if EV_ASYNC_ENABLE	1744	#if EV_ASYNC_ENABLE
1552	gotasync = 1;	1745	async_pending = 1;
1553	#endif	1746	#endif
1554		1747
1555	ev_ref (EV_A);	1748	ev_ref (EV_A);
1556	ev_io_stop (EV_A_ &pipe_w);	1749	ev_io_stop (EV_A_ &pipe_w);
1557		1750
…		…
1560	close (evfd);	1753	close (evfd);
1561	#endif	1754	#endif
1562		1755
1563	if (evpipe [0] >= 0)	1756	if (evpipe [0] >= 0)
1564	{	1757	{
1565	close (evpipe [0]);	1758	EV_WIN32_CLOSE_FD (evpipe [0]);
1566	close (evpipe [1]);	1759	EV_WIN32_CLOSE_FD (evpipe [1]);
1567	}	1760	}
1568		1761
1569	evpipe_init (EV_A);	1762	evpipe_init (EV_A);
1570	/* now iterate over everything, in case we missed something */	1763	/* now iterate over everything, in case we missed something */
1571	pipecb (EV_A_ &pipe_w, EV_READ);	1764	pipecb (EV_A_ &pipe_w, EV_READ);
…		…
1577	#if EV_MULTIPLICITY	1770	#if EV_MULTIPLICITY
1578		1771
1579	struct ev_loop *	1772	struct ev_loop *
1580	ev_loop_new (unsigned int flags)	1773	ev_loop_new (unsigned int flags)
1581	{	1774	{
1582	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));
1583		1776
1584	memset (loop, 0, sizeof (struct ev_loop));	1777	memset (EV_A, 0, sizeof (struct ev_loop));
1585
1586	loop_init (EV_A_ flags);	1778	loop_init (EV_A_ flags);
1587		1779
1588	if (ev_backend (EV_A))	1780	if (ev_backend (EV_A))
1589	return loop;	1781	return EV_A;
1590		1782
1591	return 0;	1783	return 0;
1592	}	1784	}
1593		1785
1594	void	1786	void
…		…
1601	void	1793	void
1602	ev_loop_fork (EV_P)	1794	ev_loop_fork (EV_P)
1603	{	1795	{
1604	postfork = 1; /* must be in line with ev_default_fork */	1796	postfork = 1; /* must be in line with ev_default_fork */
1605	}	1797	}
		1798	#endif /* multiplicity */
1606		1799
1607	#if EV_VERIFY	1800	#if EV_VERIFY
1608	static void noinline	1801	static void noinline
1609	verify_watcher (EV_P_ W w)	1802	verify_watcher (EV_P_ W w)
1610	{	1803	{
…		…
1638	verify_watcher (EV_A_ ws [cnt]);	1831	verify_watcher (EV_A_ ws [cnt]);
1639	}	1832	}
1640	}	1833	}
1641	#endif	1834	#endif
1642		1835
		1836	#if EV_MINIMAL < 2
1643	void	1837	void
1644	ev_loop_verify (EV_P)	1838	ev_loop_verify (EV_P)
1645	{	1839	{
1646	#if EV_VERIFY	1840	#if EV_VERIFY
1647	int i;	1841	int i;
…		…
1696	assert (checkmax >= checkcnt);	1890	assert (checkmax >= checkcnt);
1697	array_verify (EV_A_ (W *)checks, checkcnt);	1891	array_verify (EV_A_ (W *)checks, checkcnt);
1698		1892
1699	# if 0	1893	# if 0
1700	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)
1701	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)	1895	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1702	# endif
1703	#endif	1896	# endif
		1897	#endif
1704	}	1898	}
1705		1899	#endif
1706	#endif /* multiplicity */
1707		1900
1708	#if EV_MULTIPLICITY	1901	#if EV_MULTIPLICITY
1709	struct ev_loop *	1902	struct ev_loop *
1710	ev_default_loop_init (unsigned int flags)	1903	ev_default_loop_init (unsigned int flags)
1711	#else	1904	#else
…		…
1714	#endif	1907	#endif
1715	{	1908	{
1716	if (!ev_default_loop_ptr)	1909	if (!ev_default_loop_ptr)
1717	{	1910	{
1718	#if EV_MULTIPLICITY	1911	#if EV_MULTIPLICITY
1719	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1912	EV_P = ev_default_loop_ptr = &default_loop_struct;
1720	#else	1913	#else
1721	ev_default_loop_ptr = 1;	1914	ev_default_loop_ptr = 1;
1722	#endif	1915	#endif
1723		1916
1724	loop_init (EV_A_ flags);	1917	loop_init (EV_A_ flags);
…		…
1741		1934
1742	void	1935	void
1743	ev_default_destroy (void)	1936	ev_default_destroy (void)
1744	{	1937	{
1745	#if EV_MULTIPLICITY	1938	#if EV_MULTIPLICITY
1746	struct ev_loop *loop = ev_default_loop_ptr;	1939	EV_P = ev_default_loop_ptr;
1747	#endif	1940	#endif
1748		1941
1749	ev_default_loop_ptr = 0;	1942	ev_default_loop_ptr = 0;
1750		1943
1751	#ifndef _WIN32	1944	#ifndef _WIN32
…		…
1758		1951
1759	void	1952	void
1760	ev_default_fork (void)	1953	ev_default_fork (void)
1761	{	1954	{
1762	#if EV_MULTIPLICITY	1955	#if EV_MULTIPLICITY
1763	struct ev_loop *loop = ev_default_loop_ptr;	1956	EV_P = ev_default_loop_ptr;
1764	#endif	1957	#endif
1765		1958
1766	postfork = 1; /* must be in line with ev_loop_fork */	1959	postfork = 1; /* must be in line with ev_loop_fork */
1767	}	1960	}
1768		1961
…		…
1772	ev_invoke (EV_P_ void *w, int revents)	1965	ev_invoke (EV_P_ void *w, int revents)
1773	{	1966	{
1774	EV_CB_INVOKE ((W)w, revents);	1967	EV_CB_INVOKE ((W)w, revents);
1775	}	1968	}
1776		1969
1777	inline_speed void	1970	unsigned int
1778	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)
1779	{	1984	{
1780	int pri;	1985	int pri;
1781		1986
1782	for (pri = NUMPRI; pri--; )	1987	for (pri = NUMPRI; pri--; )
1783	while (pendingcnt [pri])	1988	while (pendingcnt [pri])
…		…
2018		2223
2019	mn_now = ev_rt_now;	2224	mn_now = ev_rt_now;
2020	}	2225	}
2021	}	2226	}
2022		2227
2023	static int loop_done;
2024
2025	void	2228	void
2026	ev_loop (EV_P_ int flags)	2229	ev_loop (EV_P_ int flags)
2027	{	2230	{
		2231	#if EV_MINIMAL < 2
		2232	++loop_depth;
		2233	#endif
		2234
		2235	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2236
2028	loop_done = EVUNLOOP_CANCEL;	2237	loop_done = EVUNLOOP_CANCEL;
2029		2238
2030	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 */
2031		2240
2032	do	2241	do
2033	{	2242	{
2034	#if EV_VERIFY >= 2	2243	#if EV_VERIFY >= 2
2035	ev_loop_verify (EV_A);	2244	ev_loop_verify (EV_A);
…		…
2048	/* we might have forked, so queue fork handlers */	2257	/* we might have forked, so queue fork handlers */
2049	if (expect_false (postfork))	2258	if (expect_false (postfork))
2050	if (forkcnt)	2259	if (forkcnt)
2051	{	2260	{
2052	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2261	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2053	call_pending (EV_A);	2262	EV_INVOKE_PENDING;
2054	}	2263	}
2055	#endif	2264	#endif
2056		2265
2057	/* queue prepare watchers (and execute them) */	2266	/* queue prepare watchers (and execute them) */
2058	if (expect_false (preparecnt))	2267	if (expect_false (preparecnt))
2059	{	2268	{
2060	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2269	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2061	call_pending (EV_A);	2270	EV_INVOKE_PENDING;
2062	}	2271	}
		2272
		2273	if (expect_false (loop_done))
		2274	break;
2063		2275
2064	/* we might have forked, so reify kernel state if necessary */	2276	/* we might have forked, so reify kernel state if necessary */
2065	if (expect_false (postfork))	2277	if (expect_false (postfork))
2066	loop_fork (EV_A);	2278	loop_fork (EV_A);
2067		2279
…		…
2073	ev_tstamp waittime = 0.;	2285	ev_tstamp waittime = 0.;
2074	ev_tstamp sleeptime = 0.;	2286	ev_tstamp sleeptime = 0.;
2075		2287
2076	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))	2288	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))
2077	{	2289	{
		2290	/* remember old timestamp for io_blocktime calculation */
		2291	ev_tstamp prev_mn_now = mn_now;
		2292
2078	/* update time to cancel out callback processing overhead */	2293	/* update time to cancel out callback processing overhead */
2079	time_update (EV_A_ 1e100);	2294	time_update (EV_A_ 1e100);
2080		2295
2081	waittime = MAX_BLOCKTIME;	2296	waittime = MAX_BLOCKTIME;
2082		2297
…		…
2092	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2307	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
2093	if (waittime > to) waittime = to;	2308	if (waittime > to) waittime = to;
2094	}	2309	}
2095	#endif	2310	#endif
2096		2311
		2312	/* don't let timeouts decrease the waittime below timeout_blocktime */
2097	if (expect_false (waittime < timeout_blocktime))	2313	if (expect_false (waittime < timeout_blocktime))
2098	waittime = timeout_blocktime;	2314	waittime = timeout_blocktime;
2099		2315
2100	sleeptime = waittime - backend_fudge;	2316	/* extra check because io_blocktime is commonly 0 */
2101
2102	if (expect_true (sleeptime > io_blocktime))	2317	if (expect_false (io_blocktime))
2103	sleeptime = io_blocktime;
2104
2105	if (sleeptime)
2106	{	2318	{
		2319	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2320
		2321	if (sleeptime > waittime - backend_fudge)
		2322	sleeptime = waittime - backend_fudge;
		2323
		2324	if (expect_true (sleeptime > 0.))
		2325	{
2107	ev_sleep (sleeptime);	2326	ev_sleep (sleeptime);
2108	waittime -= sleeptime;	2327	waittime -= sleeptime;
		2328	}
2109	}	2329	}
2110	}	2330	}
2111		2331
		2332	#if EV_MINIMAL < 2
2112	++loop_count;	2333	++loop_count;
		2334	#endif
		2335	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2113	backend_poll (EV_A_ waittime);	2336	backend_poll (EV_A_ waittime);
		2337	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2114		2338
2115	/* update ev_rt_now, do magic */	2339	/* update ev_rt_now, do magic */
2116	time_update (EV_A_ waittime + sleeptime);	2340	time_update (EV_A_ waittime + sleeptime);
2117	}	2341	}
2118		2342
…		…
2129		2353
2130	/* queue check watchers, to be executed first */	2354	/* queue check watchers, to be executed first */
2131	if (expect_false (checkcnt))	2355	if (expect_false (checkcnt))
2132	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2356	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2133		2357
2134	call_pending (EV_A);	2358	EV_INVOKE_PENDING;
2135	}	2359	}
2136	while (expect_true (	2360	while (expect_true (
2137	activecnt	2361	activecnt
2138	&& !loop_done	2362	&& !loop_done
2139	&& !(flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK))	2363	&& !(flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK))
2140	));	2364	));
2141		2365
2142	if (loop_done == EVUNLOOP_ONE)	2366	if (loop_done == EVUNLOOP_ONE)
2143	loop_done = EVUNLOOP_CANCEL;	2367	loop_done = EVUNLOOP_CANCEL;
		2368
		2369	#if EV_MINIMAL < 2
		2370	--loop_depth;
		2371	#endif
2144	}	2372	}
2145		2373
2146	void	2374	void
2147	ev_unloop (EV_P_ int how)	2375	ev_unloop (EV_P_ int how)
2148	{	2376	{
…		…
2199	inline_size void	2427	inline_size void
2200	wlist_del (WL *head, WL elem)	2428	wlist_del (WL *head, WL elem)
2201	{	2429	{
2202	while (*head)	2430	while (*head)
2203	{	2431	{
2204	if (*head == elem)	2432	if (expect_true (*head == elem))
2205	{	2433	{
2206	*head = elem->next;	2434	*head = elem->next;
2207	return;	2435	break;
2208	}	2436	}
2209		2437
2210	head = &(*head)->next;	2438	head = &(*head)->next;
2211	}	2439	}
2212	}	2440	}
…		…
2240	}	2468	}
2241		2469
2242	inline_size void	2470	inline_size void
2243	pri_adjust (EV_P_ W w)	2471	pri_adjust (EV_P_ W w)
2244	{	2472	{
2245	int pri = w->priority;	2473	int pri = ev_priority (w);
2246	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2474	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2247	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2475	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2248	w->priority = pri;	2476	ev_set_priority (w, pri);
2249	}	2477	}
2250		2478
2251	inline_speed void	2479	inline_speed void
2252	ev_start (EV_P_ W w, int active)	2480	ev_start (EV_P_ W w, int active)
2253	{	2481	{
…		…
2280		2508
2281	ev_start (EV_A_ (W)w, 1);	2509	ev_start (EV_A_ (W)w, 1);
2282	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2510	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2283	wlist_add (&anfds[fd].head, (WL)w);	2511	wlist_add (&anfds[fd].head, (WL)w);
2284		2512
2285	fd_change (EV_A_ fd, w->events & EV__IOFDSET \| 1);	2513	fd_change (EV_A_ fd, w->events & EV__IOFDSET \| EV_ANFD_REIFY);
2286	w->events &= ~EV__IOFDSET;	2514	w->events &= ~EV__IOFDSET;
2287		2515
2288	EV_FREQUENT_CHECK;	2516	EV_FREQUENT_CHECK;
2289	}	2517	}
2290		2518
…		…
2384	}	2612	}
2385		2613
2386	EV_FREQUENT_CHECK;	2614	EV_FREQUENT_CHECK;
2387	}	2615	}
2388		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
2389	#if EV_PERIODIC_ENABLE	2623	#if EV_PERIODIC_ENABLE
2390	void noinline	2624	void noinline
2391	ev_periodic_start (EV_P_ ev_periodic *w)	2625	ev_periodic_start (EV_P_ ev_periodic *w)
2392	{	2626	{
2393	if (expect_false (ev_is_active (w)))	2627	if (expect_false (ev_is_active (w)))
…		…
2460	#endif	2694	#endif
2461		2695
2462	void noinline	2696	void noinline
2463	ev_signal_start (EV_P_ ev_signal *w)	2697	ev_signal_start (EV_P_ ev_signal *w)
2464	{	2698	{
2465	#if EV_MULTIPLICITY
2466	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2467	#endif
2468	if (expect_false (ev_is_active (w)))	2699	if (expect_false (ev_is_active (w)))
2469	return;	2700	return;
2470		2701
2471	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));
2472		2703
2473	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));
2474		2707
2475	EV_FREQUENT_CHECK;	2708	signals [w->signum - 1].loop = EV_A;
		2709	#endif
2476		2710
		2711	EV_FREQUENT_CHECK;
		2712
		2713	#if EV_USE_SIGNALFD
		2714	if (sigfd == -2)
2477	{	2715	{
2478	#ifndef _WIN32	2716	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK \| SFD_CLOEXEC);
2479	sigset_t full, prev;	2717	if (sigfd < 0 && errno == EINVAL)
2480	sigfillset (&full);	2718	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2481	sigprocmask (SIG_SETMASK, &full, &prev);
2482	#endif
2483		2719
2484	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 */
2485		2723
2486	#ifndef _WIN32	2724	sigemptyset (&sigfd_set);
2487	sigprocmask (SIG_SETMASK, &prev, 0);	2725
2488	#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	}
2489	}	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
2490		2742
2491	ev_start (EV_A_ (W)w, 1);	2743	ev_start (EV_A_ (W)w, 1);
2492	wlist_add (&signals [w->signum - 1].head, (WL)w);	2744	wlist_add (&signals [w->signum - 1].head, (WL)w);
2493		2745
2494	if (!((WL)w)->next)	2746	if (!((WL)w)->next)
		2747	# if EV_USE_SIGNALFD
		2748	if (sigfd < 0) /TODO/
		2749	# endif
2495	{	2750	{
2496	#if _WIN32	2751	# if _WIN32
		2752	evpipe_init (EV_A);
		2753
2497	signal (w->signum, ev_sighandler);	2754	signal (w->signum, ev_sighandler);
2498	#else	2755	# else
2499	struct sigaction sa;	2756	struct sigaction sa;
		2757
		2758	evpipe_init (EV_A);
		2759
2500	sa.sa_handler = ev_sighandler;	2760	sa.sa_handler = ev_sighandler;
2501	sigfillset (&sa.sa_mask);	2761	sigfillset (&sa.sa_mask);
2502	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 */
2503	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);
2504	#endif	2768	#endif
2505	}	2769	}
2506		2770
2507	EV_FREQUENT_CHECK;	2771	EV_FREQUENT_CHECK;
2508	}	2772	}
2509		2773
2510	void noinline	2774	void noinline
…		…
2518		2782
2519	wlist_del (&signals [w->signum - 1].head, (WL)w);	2783	wlist_del (&signals [w->signum - 1].head, (WL)w);
2520	ev_stop (EV_A_ (W)w);	2784	ev_stop (EV_A_ (W)w);
2521		2785
2522	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
2523	signal (w->signum, SIG_DFL);	2802	signal (w->signum, SIG_DFL);
		2803	}
2524		2804
2525	EV_FREQUENT_CHECK;	2805	EV_FREQUENT_CHECK;
2526	}	2806	}
2527		2807
2528	void	2808	void
…		…
2608	}	2888	}
2609	}	2889	}
2610		2890
2611	if (w->wd >= 0)	2891	if (w->wd >= 0)
2612	{	2892	{
		2893	struct statfs sfs;
		2894
2613	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2895	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2614		2896
2615	/* now local changes will be tracked by inotify, but remote changes won't */	2897	/* now local changes will be tracked by inotify, but remote changes won't */
2616	/* unless the filesystem it known to be local, we therefore still poll */	2898	/* unless the filesystem is known to be local, we therefore still poll */
2617	/* also do poll on <2.6.25, but with normal frequency */	2899	/* also do poll on <2.6.25, but with normal frequency */
2618	struct statfs sfs;
2619		2900
2620	if (fs_2625 && !statfs (w->path, &sfs))	2901	if (fs_2625 && !statfs (w->path, &sfs))
2621	if (sfs.f_type == 0x1373 /* devfs */	2902	if (sfs.f_type == 0x1373 /* devfs */
2622	\|\| sfs.f_type == 0xEF53 /* ext2/3 */	2903	\|\| sfs.f_type == 0xEF53 /* ext2/3 */
2623	\|\| sfs.f_type == 0x3153464a /* jfs */	2904	\|\| sfs.f_type == 0x3153464a /* jfs */
…		…
2712	return;	2993	return;
2713		2994
2714	fs_2625 = 1;	2995	fs_2625 = 1;
2715	}	2996	}
2716		2997
		2998	inline_size int
		2999	infy_newfd (void)
		3000	{
		3001	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3002	int fd = inotify_init1 (IN_CLOEXEC \| IN_NONBLOCK);
		3003	if (fd >= 0)
		3004	return fd;
		3005	#endif
		3006	return inotify_init ();
		3007	}
		3008
2717	inline_size void	3009	inline_size void
2718	infy_init (EV_P)	3010	infy_init (EV_P)
2719	{	3011	{
2720	if (fs_fd != -2)	3012	if (fs_fd != -2)
2721	return;	3013	return;
2722		3014
2723	fs_fd = -1;	3015	fs_fd = -1;
2724		3016
2725	check_2625 (EV_A);	3017	check_2625 (EV_A);
2726		3018
2727	fs_fd = inotify_init ();	3019	fs_fd = infy_newfd ();
2728		3020
2729	if (fs_fd >= 0)	3021	if (fs_fd >= 0)
2730	{	3022	{
		3023	fd_intern (fs_fd);
2731	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3024	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2732	ev_set_priority (&fs_w, EV_MAXPRI);	3025	ev_set_priority (&fs_w, EV_MAXPRI);
2733	ev_io_start (EV_A_ &fs_w);	3026	ev_io_start (EV_A_ &fs_w);
		3027	ev_unref (EV_A);
2734	}	3028	}
2735	}	3029	}
2736		3030
2737	inline_size void	3031	inline_size void
2738	infy_fork (EV_P)	3032	infy_fork (EV_P)
…		…
2740	int slot;	3034	int slot;
2741		3035
2742	if (fs_fd < 0)	3036	if (fs_fd < 0)
2743	return;	3037	return;
2744		3038
		3039	ev_ref (EV_A);
		3040	ev_io_stop (EV_A_ &fs_w);
2745	close (fs_fd);	3041	close (fs_fd);
2746	fs_fd = inotify_init ();	3042	fs_fd = infy_newfd ();
		3043
		3044	if (fs_fd >= 0)
		3045	{
		3046	fd_intern (fs_fd);
		3047	ev_io_set (&fs_w, fs_fd, EV_READ);
		3048	ev_io_start (EV_A_ &fs_w);
		3049	ev_unref (EV_A);
		3050	}
2747		3051
2748	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3052	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2749	{	3053	{
2750	WL w_ = fs_hash [slot].head;	3054	WL w_ = fs_hash [slot].head;
2751	fs_hash [slot].head = 0;	3055	fs_hash [slot].head = 0;
…		…
3008	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3312	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3009	{	3313	{
3010	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));	3314	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
3011		3315
3012	{	3316	{
3013	struct ev_loop *loop = w->other;	3317	EV_P = w->other;
3014		3318
3015	while (fdchangecnt)	3319	while (fdchangecnt)
3016	{	3320	{
3017	fd_reify (EV_A);	3321	fd_reify (EV_A);
3018	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3322	ev_loop (EV_A_ EVLOOP_NONBLOCK);
…		…
3026	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));
3027		3331
3028	ev_embed_stop (EV_A_ w);	3332	ev_embed_stop (EV_A_ w);
3029		3333
3030	{	3334	{
3031	struct ev_loop *loop = w->other;	3335	EV_P = w->other;
3032		3336
3033	ev_loop_fork (EV_A);	3337	ev_loop_fork (EV_A);
3034	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3338	ev_loop (EV_A_ EVLOOP_NONBLOCK);
3035	}	3339	}
3036		3340
…		…
3050	{	3354	{
3051	if (expect_false (ev_is_active (w)))	3355	if (expect_false (ev_is_active (w)))
3052	return;	3356	return;
3053		3357
3054	{	3358	{
3055	struct ev_loop *loop = w->other;	3359	EV_P = w->other;
3056	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 ()));
3057	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);
3058	}	3362	}
3059		3363
3060	EV_FREQUENT_CHECK;	3364	EV_FREQUENT_CHECK;
…		…
3172		3476
3173	void	3477	void
3174	ev_async_send (EV_P_ ev_async *w)	3478	ev_async_send (EV_P_ ev_async *w)
3175	{	3479	{
3176	w->sent = 1;	3480	w->sent = 1;
3177	evpipe_write (EV_A_ &gotasync);	3481	evpipe_write (EV_A_ &async_pending);
3178	}	3482	}
3179	#endif	3483	#endif
3180		3484
3181	/*****************************************************************************/	3485	/*****************************************************************************/
3182		3486
…		…
3331	if (types & EV_CHECK)	3635	if (types & EV_CHECK)
3332	for (i = checkcnt; i--; )	3636	for (i = checkcnt; i--; )
3333	cb (EV_A_ EV_CHECK, checks [i]);	3637	cb (EV_A_ EV_CHECK, checks [i]);
3334		3638
3335	if (types & EV_SIGNAL)	3639	if (types & EV_SIGNAL)
3336	for (i = 0; i < signalmax; ++i)	3640	for (i = 0; i < EV_NSIG - 1; ++i)
3337	for (wl = signals [i].head; wl; )	3641	for (wl = signals [i].head; wl; )
3338	{	3642	{
3339	wn = wl->next;	3643	wn = wl->next;
3340	cb (EV_A_ EV_SIGNAL, wl);	3644	cb (EV_A_ EV_SIGNAL, wl);
3341	wl = wn;	3645	wl = wn;

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+Removed lines
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+Changed lines
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Comparing libev/ev.c (file contents): Revision 1.291 by root, Mon Jun 29 04:44:18 2009 UTC vs. Revision 1.317 by root, Sat Nov 14 00:15:21 2009 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.291 by root, Mon Jun 29 04:44:18 2009 UTC vs.
Revision 1.317 by root, Sat Nov 14 00:15:21 2009 UTC