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

Comparing libev/ev.c (file contents):
Revision 1.297 by root, Fri Jul 10 00:36:21 2009 UTC vs.
Revision 1.325 by root, Sun Jan 24 12:31:55 2010 UTC

…		…
110	# define EV_USE_EPOLL 0	110	# define EV_USE_EPOLL 0
111	# endif	111	# endif
112	# endif	112	# endif
113		113
114	# ifndef EV_USE_KQUEUE	114	# ifndef EV_USE_KQUEUE
115	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	115	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
116	# define EV_USE_KQUEUE 1	116	# define EV_USE_KQUEUE 1
117	# else	117	# else
118	# define EV_USE_KQUEUE 0	118	# define EV_USE_KQUEUE 0
119	# endif	119	# endif
120	# endif	120	# endif
…		…
133	# else	133	# else
134	# define EV_USE_INOTIFY 0	134	# define EV_USE_INOTIFY 0
135	# endif	135	# endif
136	# endif	136	# endif
137		137
		138	# ifndef EV_USE_SIGNALFD
		139	# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
		140	# define EV_USE_SIGNALFD 1
		141	# else
		142	# define EV_USE_SIGNALFD 0
		143	# endif
		144	# endif
		145
138	# ifndef EV_USE_EVENTFD	146	# ifndef EV_USE_EVENTFD
139	# if HAVE_EVENTFD	147	# if HAVE_EVENTFD
140	# define EV_USE_EVENTFD 1	148	# define EV_USE_EVENTFD 1
141	# else	149	# else
142	# define EV_USE_EVENTFD 0	150	# define EV_USE_EVENTFD 0
…		…
145		153
146	#endif	154	#endif
147		155
148	#include <math.h>	156	#include <math.h>
149	#include <stdlib.h>	157	#include <stdlib.h>
		158	#include <string.h>
150	#include <fcntl.h>	159	#include <fcntl.h>
151	#include <stddef.h>	160	#include <stddef.h>
152		161
153	#include <stdio.h>	162	#include <stdio.h>
154		163
…		…
178	# endif	187	# endif
179	#endif	188	#endif
180		189
181	/* this block tries to deduce configuration from header-defined symbols and defaults */	190	/* this block tries to deduce configuration from header-defined symbols and defaults */
182		191
		192	/* try to deduce the maximum number of signals on this platform */
		193	#if defined (EV_NSIG)
		194	/* use what's provided */
		195	#elif defined (NSIG)
		196	# define EV_NSIG (NSIG)
		197	#elif defined(_NSIG)
		198	# define EV_NSIG (_NSIG)
		199	#elif defined (SIGMAX)
		200	# define EV_NSIG (SIGMAX+1)
		201	#elif defined (SIG_MAX)
		202	# define EV_NSIG (SIG_MAX+1)
		203	#elif defined (_SIG_MAX)
		204	# define EV_NSIG (_SIG_MAX+1)
		205	#elif defined (MAXSIG)
		206	# define EV_NSIG (MAXSIG+1)
		207	#elif defined (MAX_SIG)
		208	# define EV_NSIG (MAX_SIG+1)
		209	#elif defined (SIGARRAYSIZE)
		210	# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
		211	#elif defined (_sys_nsig)
		212	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
		213	#else
		214	# error "unable to find value for NSIG, please report"
		215	/* to make it compile regardless, just remove the above line */
		216	# define EV_NSIG 65
		217	#endif
		218
183	#ifndef EV_USE_CLOCK_SYSCALL	219	#ifndef EV_USE_CLOCK_SYSCALL
184	# if __linux && __GLIBC__ >= 2	220	# if __linux && __GLIBC__ >= 2
185	# define EV_USE_CLOCK_SYSCALL 1	221	# define EV_USE_CLOCK_SYSCALL 1
186	# else	222	# else
187	# define EV_USE_CLOCK_SYSCALL 0	223	# define EV_USE_CLOCK_SYSCALL 0
…		…
263	#ifndef EV_USE_EVENTFD	299	#ifndef EV_USE_EVENTFD
264	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))	300	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265	# define EV_USE_EVENTFD 1	301	# define EV_USE_EVENTFD 1
266	# else	302	# else
267	# define EV_USE_EVENTFD 0	303	# define EV_USE_EVENTFD 0
		304	# endif
		305	#endif
		306
		307	#ifndef EV_USE_SIGNALFD
		308	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		309	# define EV_USE_SIGNALFD 1
		310	# else
		311	# define EV_USE_SIGNALFD 0
268	# endif	312	# endif
269	#endif	313	#endif
270		314
271	#if 0 /* debugging */	315	#if 0 /* debugging */
272	# define EV_VERIFY 3	316	# define EV_VERIFY 3
…		…
300	# endif	344	# endif
301	#endif	345	#endif
302		346
303	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	347	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
304		348
		349	#ifdef _AIX
		350	/* AIX has a completely broken poll.h header */
		351	# undef EV_USE_POLL
		352	# define EV_USE_POLL 0
		353	#endif
		354
305	#ifndef CLOCK_MONOTONIC	355	#ifndef CLOCK_MONOTONIC
306	# undef EV_USE_MONOTONIC	356	# undef EV_USE_MONOTONIC
307	# define EV_USE_MONOTONIC 0	357	# define EV_USE_MONOTONIC 0
308	#endif	358	#endif
309		359
…		…
339	#endif	389	#endif
340		390
341	#if EV_USE_EVENTFD	391	#if EV_USE_EVENTFD
342	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	392	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
343	# include <stdint.h>	393	# include <stdint.h>
		394	# ifndef EFD_NONBLOCK
		395	# define EFD_NONBLOCK O_NONBLOCK
		396	# endif
		397	# ifndef EFD_CLOEXEC
		398	# ifdef O_CLOEXEC
		399	# define EFD_CLOEXEC O_CLOEXEC
		400	# else
		401	# define EFD_CLOEXEC 02000000
		402	# endif
		403	# endif
344	# ifdef __cplusplus	404	# ifdef __cplusplus
345	extern "C" {	405	extern "C" {
346	# endif	406	# endif
347	int eventfd (unsigned int initval, int flags);	407	int eventfd (unsigned int initval, int flags);
348	# ifdef __cplusplus	408	# ifdef __cplusplus
349	}	409	}
350	# endif	410	# endif
351	#endif	411	#endif
		412
		413	#if EV_USE_SIGNALFD
		414	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		415	# include <stdint.h>
		416	# ifndef SFD_NONBLOCK
		417	# define SFD_NONBLOCK O_NONBLOCK
		418	# endif
		419	# ifndef SFD_CLOEXEC
		420	# ifdef O_CLOEXEC
		421	# define SFD_CLOEXEC O_CLOEXEC
		422	# else
		423	# define SFD_CLOEXEC 02000000
		424	# endif
		425	# endif
		426	# ifdef __cplusplus
		427	extern "C" {
		428	# endif
		429	int signalfd (int fd, const sigset_t *mask, int flags);
		430
		431	struct signalfd_siginfo
		432	{
		433	uint32_t ssi_signo;
		434	char pad[128 - sizeof (uint32_t)];
		435	};
		436	# ifdef __cplusplus
		437	}
		438	# endif
		439	#endif
		440
352		441
353	/**/	442	/**/
354		443
355	#if EV_VERIFY >= 3	444	#if EV_VERIFY >= 3
356	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)	445	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
…		…
368	*/	457	*/
369	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	458	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
370		459
371	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	460	#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) */	461	#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		462
375	#if __GNUC__ >= 4	463	#if __GNUC__ >= 4
376	# define expect(expr,value) __builtin_expect ((expr),(value))	464	# define expect(expr,value) __builtin_expect ((expr),(value))
377	# define noinline __attribute__ ((noinline))	465	# define noinline __attribute__ ((noinline))
378	#else	466	#else
…		…
419		507
420	#if EV_USE_MONOTONIC	508	#if EV_USE_MONOTONIC
421	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	509	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
422	#endif	510	#endif
423		511
		512	#ifndef EV_FD_TO_WIN32_HANDLE
		513	# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		514	#endif
		515	#ifndef EV_WIN32_HANDLE_TO_FD
		516	# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
		517	#endif
		518	#ifndef EV_WIN32_CLOSE_FD
		519	# define EV_WIN32_CLOSE_FD(fd) close (fd)
		520	#endif
		521
424	#ifdef _WIN32	522	#ifdef _WIN32
425	# include "ev_win32.c"	523	# include "ev_win32.c"
426	#endif	524	#endif
427		525
428	/*****************************************************************************/	526	/*****************************************************************************/
…		…
490	#define ev_malloc(size) ev_realloc (0, (size))	588	#define ev_malloc(size) ev_realloc (0, (size))
491	#define ev_free(ptr) ev_realloc ((ptr), 0)	589	#define ev_free(ptr) ev_realloc ((ptr), 0)
492		590
493	/*****************************************************************************/	591	/*****************************************************************************/
494		592
		593	/* set in reify when reification needed */
		594	#define EV_ANFD_REIFY 1
		595
495	/* file descriptor info structure */	596	/* file descriptor info structure */
496	typedef struct	597	typedef struct
497	{	598	{
498	WL head;	599	WL head;
499	unsigned char events; /* the events watched for */	600	unsigned char events; /* the events watched for */
500	unsigned char reify; /* flag set when this ANFD needs reification */	601	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
501	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */	602	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
502	unsigned char unused;	603	unsigned char unused;
503	#if EV_USE_EPOLL	604	#if EV_USE_EPOLL
504	unsigned int egen; /* generation counter to counter epoll bugs */	605	unsigned int egen; /* generation counter to counter epoll bugs */
505	#endif	606	#endif
…		…
568	static int ev_default_loop_ptr;	669	static int ev_default_loop_ptr;
569		670
570	#endif	671	#endif
571		672
572	#if EV_MINIMAL < 2	673	#if EV_MINIMAL < 2
573	# define EV_SUSPEND_CB if (expect_false (suspend_cb)) suspend_cb (EV_A)
574	# define EV_RESUME_CB if (expect_false (resume_cb )) resume_cb (EV_A)	674	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		675	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
575	# define EV_INVOKE_PENDING invoke_cb (EV_A)	676	# define EV_INVOKE_PENDING invoke_cb (EV_A)
576	#else	677	#else
577	# define EV_SUSPEND_CB (void)0
578	# define EV_RESUME_CB (void)0	678	# define EV_RELEASE_CB (void)0
		679	# define EV_ACQUIRE_CB (void)0
579	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)	680	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
580	#endif	681	#endif
		682
		683	#define EVUNLOOP_RECURSE 0x80
581		684
582	/*****************************************************************************/	685	/*****************************************************************************/
583		686
584	#ifndef EV_HAVE_EV_TIME	687	#ifndef EV_HAVE_EV_TIME
585	ev_tstamp	688	ev_tstamp
…		…
642		745
643	tv.tv_sec = (time_t)delay;	746	tv.tv_sec = (time_t)delay;
644	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	747	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
645		748
646	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */	749	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
647	/* somehting not guaranteed by newer posix versions, but guaranteed */	750	/* something not guaranteed by newer posix versions, but guaranteed */
648	/* by older ones */	751	/* by older ones */
649	select (0, 0, 0, 0, &tv);	752	select (0, 0, 0, 0, &tv);
650	#endif	753	#endif
651	}	754	}
652	}	755	}
…		…
760	}	863	}
761		864
762	/*****************************************************************************/	865	/*****************************************************************************/
763		866
764	inline_speed void	867	inline_speed void
765	fd_event (EV_P_ int fd, int revents)	868	fd_event_nc (EV_P_ int fd, int revents)
766	{	869	{
767	ANFD *anfd = anfds + fd;	870	ANFD *anfd = anfds + fd;
768	ev_io *w;	871	ev_io *w;
769		872
770	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)	873	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
…		…
774	if (ev)	877	if (ev)
775	ev_feed_event (EV_A_ (W)w, ev);	878	ev_feed_event (EV_A_ (W)w, ev);
776	}	879	}
777	}	880	}
778		881
		882	/* do not submit kernel events for fds that have reify set */
		883	/* because that means they changed while we were polling for new events */
		884	inline_speed void
		885	fd_event (EV_P_ int fd, int revents)
		886	{
		887	ANFD *anfd = anfds + fd;
		888
		889	if (expect_true (!anfd->reify))
		890	fd_event_nc (EV_A_ fd, revents);
		891	}
		892
779	void	893	void
780	ev_feed_fd_event (EV_P_ int fd, int revents)	894	ev_feed_fd_event (EV_P_ int fd, int revents)
781	{	895	{
782	if (fd >= 0 && fd < anfdmax)	896	if (fd >= 0 && fd < anfdmax)
783	fd_event (EV_A_ fd, revents);	897	fd_event_nc (EV_A_ fd, revents);
784	}	898	}
785		899
786	/* make sure the external fd watch events are in-sync */	900	/* make sure the external fd watch events are in-sync */
787	/* with the kernel/libev internal state */	901	/* with the kernel/libev internal state */
788	inline_size void	902	inline_size void
…		…
803		917
804	#if EV_SELECT_IS_WINSOCKET	918	#if EV_SELECT_IS_WINSOCKET
805	if (events)	919	if (events)
806	{	920	{
807	unsigned long arg;	921	unsigned long arg;
808	#ifdef EV_FD_TO_WIN32_HANDLE
809	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	922	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
810	#else
811	anfd->handle = _get_osfhandle (fd);
812	#endif
813	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	923	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
814	}	924	}
815	#endif	925	#endif
816		926
817	{	927	{
…		…
860	/* check whether the given fd is atcually valid, for error recovery */	970	/* check whether the given fd is atcually valid, for error recovery */
861	inline_size int	971	inline_size int
862	fd_valid (int fd)	972	fd_valid (int fd)
863	{	973	{
864	#ifdef _WIN32	974	#ifdef _WIN32
865	return _get_osfhandle (fd) != -1;	975	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
866	#else	976	#else
867	return fcntl (fd, F_GETFD) != -1;	977	return fcntl (fd, F_GETFD) != -1;
868	#endif	978	#endif
869	}	979	}
870		980
…		…
888		998
889	for (fd = anfdmax; fd--; )	999	for (fd = anfdmax; fd--; )
890	if (anfds [fd].events)	1000	if (anfds [fd].events)
891	{	1001	{
892	fd_kill (EV_A_ fd);	1002	fd_kill (EV_A_ fd);
893	return;	1003	break;
894	}	1004	}
895	}	1005	}
896		1006
897	/* usually called after fork if backend needs to re-arm all fds from scratch */	1007	/* usually called after fork if backend needs to re-arm all fds from scratch */
898	static void noinline	1008	static void noinline
…		…
903	for (fd = 0; fd < anfdmax; ++fd)	1013	for (fd = 0; fd < anfdmax; ++fd)
904	if (anfds [fd].events)	1014	if (anfds [fd].events)
905	{	1015	{
906	anfds [fd].events = 0;	1016	anfds [fd].events = 0;
907	anfds [fd].emask = 0;	1017	anfds [fd].emask = 0;
908	fd_change (EV_A_ fd, EV__IOFDSET \| 1);	1018	fd_change (EV_A_ fd, EV__IOFDSET \| EV_ANFD_REIFY);
909	}	1019	}
910	}	1020	}
911		1021
912	/*****************************************************************************/	1022	/*****************************************************************************/
913		1023
…		…
988		1098
989	for (;;)	1099	for (;;)
990	{	1100	{
991	int c = k << 1;	1101	int c = k << 1;
992		1102
993	if (c > N + HEAP0 - 1)	1103	if (c >= N + HEAP0)
994	break;	1104	break;
995		1105
996	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])	1106	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
997	? 1 : 0;	1107	? 1 : 0;
998		1108
…		…
1034		1144
1035	/* move an element suitably so it is in a correct place */	1145	/* move an element suitably so it is in a correct place */
1036	inline_size void	1146	inline_size void
1037	adjustheap (ANHE *heap, int N, int k)	1147	adjustheap (ANHE *heap, int N, int k)
1038	{	1148	{
1039	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1149	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1040	upheap (heap, k);	1150	upheap (heap, k);
1041	else	1151	else
1042	downheap (heap, N, k);	1152	downheap (heap, N, k);
1043	}	1153	}
1044		1154
…		…
1057	/*****************************************************************************/	1167	/*****************************************************************************/
1058		1168
1059	/* associate signal watchers to a signal signal */	1169	/* associate signal watchers to a signal signal */
1060	typedef struct	1170	typedef struct
1061	{	1171	{
		1172	EV_ATOMIC_T pending;
		1173	#if EV_MULTIPLICITY
		1174	EV_P;
		1175	#endif
1062	WL head;	1176	WL head;
1063	EV_ATOMIC_T gotsig;
1064	} ANSIG;	1177	} ANSIG;
1065		1178
1066	static ANSIG *signals;	1179	static ANSIG signals [EV_NSIG - 1];
1067	static int signalmax;
1068
1069	static EV_ATOMIC_T gotsig;
1070		1180
1071	/*****************************************************************************/	1181	/*****************************************************************************/
1072		1182
1073	/* used to prepare libev internal fd's */	1183	/* used to prepare libev internal fd's */
1074	/* this is not fork-safe */	1184	/* this is not fork-safe */
1075	inline_speed void	1185	inline_speed void
1076	fd_intern (int fd)	1186	fd_intern (int fd)
1077	{	1187	{
1078	#ifdef _WIN32	1188	#ifdef _WIN32
1079	unsigned long arg = 1;	1189	unsigned long arg = 1;
1080	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1190	ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1081	#else	1191	#else
1082	fcntl (fd, F_SETFD, FD_CLOEXEC);	1192	fcntl (fd, F_SETFD, FD_CLOEXEC);
1083	fcntl (fd, F_SETFL, O_NONBLOCK);	1193	fcntl (fd, F_SETFL, O_NONBLOCK);
1084	#endif	1194	#endif
1085	}	1195	}
…		…
1088	evpipe_init (EV_P)	1198	evpipe_init (EV_P)
1089	{	1199	{
1090	if (!ev_is_active (&pipe_w))	1200	if (!ev_is_active (&pipe_w))
1091	{	1201	{
1092	#if EV_USE_EVENTFD	1202	#if EV_USE_EVENTFD
		1203	evfd = eventfd (0, EFD_NONBLOCK \| EFD_CLOEXEC);
		1204	if (evfd < 0 && errno == EINVAL)
1093	if ((evfd = eventfd (0, 0)) >= 0)	1205	evfd = eventfd (0, 0);
		1206
		1207	if (evfd >= 0)
1094	{	1208	{
1095	evpipe [0] = -1;	1209	evpipe [0] = -1;
1096	fd_intern (evfd);	1210	fd_intern (evfd); /* doing it twice doesn't hurt */
1097	ev_io_set (&pipe_w, evfd, EV_READ);	1211	ev_io_set (&pipe_w, evfd, EV_READ);
1098	}	1212	}
1099	else	1213	else
1100	#endif	1214	#endif
1101	{	1215	{
…		…
1138	/* called whenever the libev signal pipe */	1252	/* called whenever the libev signal pipe */
1139	/* got some events (signal, async) */	1253	/* got some events (signal, async) */
1140	static void	1254	static void
1141	pipecb (EV_P_ ev_io *iow, int revents)	1255	pipecb (EV_P_ ev_io *iow, int revents)
1142	{	1256	{
		1257	int i;
		1258
1143	#if EV_USE_EVENTFD	1259	#if EV_USE_EVENTFD
1144	if (evfd >= 0)	1260	if (evfd >= 0)
1145	{	1261	{
1146	uint64_t counter;	1262	uint64_t counter;
1147	read (evfd, &counter, sizeof (uint64_t));	1263	read (evfd, &counter, sizeof (uint64_t));
…		…
1151	{	1267	{
1152	char dummy;	1268	char dummy;
1153	read (evpipe [0], &dummy, 1);	1269	read (evpipe [0], &dummy, 1);
1154	}	1270	}
1155		1271
1156	if (gotsig && ev_is_default_loop (EV_A))	1272	if (sig_pending)
1157	{	1273	{
1158	int signum;	1274	sig_pending = 0;
1159	gotsig = 0;
1160		1275
1161	for (signum = signalmax; signum--; )	1276	for (i = EV_NSIG - 1; i--; )
1162	if (signals [signum].gotsig)	1277	if (expect_false (signals [i].pending))
1163	ev_feed_signal_event (EV_A_ signum + 1);	1278	ev_feed_signal_event (EV_A_ i + 1);
1164	}	1279	}
1165		1280
1166	#if EV_ASYNC_ENABLE	1281	#if EV_ASYNC_ENABLE
1167	if (gotasync)	1282	if (async_pending)
1168	{	1283	{
1169	int i;	1284	async_pending = 0;
1170	gotasync = 0;
1171		1285
1172	for (i = asynccnt; i--; )	1286	for (i = asynccnt; i--; )
1173	if (asyncs [i]->sent)	1287	if (asyncs [i]->sent)
1174	{	1288	{
1175	asyncs [i]->sent = 0;	1289	asyncs [i]->sent = 0;
…		…
1183		1297
1184	static void	1298	static void
1185	ev_sighandler (int signum)	1299	ev_sighandler (int signum)
1186	{	1300	{
1187	#if EV_MULTIPLICITY	1301	#if EV_MULTIPLICITY
1188	struct ev_loop *loop = &default_loop_struct;	1302	EV_P = signals [signum - 1].loop;
1189	#endif	1303	#endif
1190		1304
1191	#if _WIN32	1305	#ifdef _WIN32
1192	signal (signum, ev_sighandler);	1306	signal (signum, ev_sighandler);
1193	#endif	1307	#endif
1194		1308
1195	signals [signum - 1].gotsig = 1;	1309	signals [signum - 1].pending = 1;
1196	evpipe_write (EV_A_ &gotsig);	1310	evpipe_write (EV_A_ &sig_pending);
1197	}	1311	}
1198		1312
1199	void noinline	1313	void noinline
1200	ev_feed_signal_event (EV_P_ int signum)	1314	ev_feed_signal_event (EV_P_ int signum)
1201	{	1315	{
1202	WL w;	1316	WL w;
1203		1317
		1318	if (expect_false (signum <= 0 \|\| signum > EV_NSIG))
		1319	return;
		1320
		1321	--signum;
		1322
1204	#if EV_MULTIPLICITY	1323	#if EV_MULTIPLICITY
1205	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1324	/* it is permissible to try to feed a signal to the wrong loop */
1206	#endif	1325	/* or, likely more useful, feeding a signal nobody is waiting for */
1207		1326
1208	--signum;	1327	if (expect_false (signals [signum].loop != EV_A))
1209
1210	if (signum < 0 \|\| signum >= signalmax)
1211	return;	1328	return;
		1329	#endif
1212		1330
1213	signals [signum].gotsig = 0;	1331	signals [signum].pending = 0;
1214		1332
1215	for (w = signals [signum].head; w; w = w->next)	1333	for (w = signals [signum].head; w; w = w->next)
1216	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1334	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1217	}	1335	}
		1336
		1337	#if EV_USE_SIGNALFD
		1338	static void
		1339	sigfdcb (EV_P_ ev_io *iow, int revents)
		1340	{
		1341	struct signalfd_siginfo si[2], sip; / these structs are big */
		1342
		1343	for (;;)
		1344	{
		1345	ssize_t res = read (sigfd, si, sizeof (si));
		1346
		1347	/* not ISO-C, as res might be -1, but works with SuS */
		1348	for (sip = si; (char )sip < (char )si + res; ++sip)
		1349	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1350
		1351	if (res < (ssize_t)sizeof (si))
		1352	break;
		1353	}
		1354	}
		1355	#endif
1218		1356
1219	/*****************************************************************************/	1357	/*****************************************************************************/
1220		1358
1221	static WL childs [EV_PID_HASHSIZE];	1359	static WL childs [EV_PID_HASHSIZE];
1222		1360
…		…
1409	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))	1547	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1410	{	1548	{
1411	invoke_cb = invoke_pending_cb;	1549	invoke_cb = invoke_pending_cb;
1412	}	1550	}
1413		1551
1414	void ev_set_blocking_cb (EV_P_ void (suspend_cb_)(EV_P), void (resume_cb_)(EV_P))	1552	void ev_set_loop_release_cb (EV_P_ void (release)(EV_P), void (acquire)(EV_P))
1415	{	1553	{
1416	suspend_cb = suspend_cb_;	1554	release_cb = release;
1417	resume_cb = resume_cb_;	1555	acquire_cb = acquire;
1418	}	1556	}
1419	#endif	1557	#endif
1420		1558
1421	/* initialise a loop structure, must be zero-initialised */	1559	/* initialise a loop structure, must be zero-initialised */
1422	static void noinline	1560	static void noinline
…		…
1441		1579
1442	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1580	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1443	have_monotonic = 1;	1581	have_monotonic = 1;
1444	}	1582	}
1445	#endif	1583	#endif
		1584
		1585	/* pid check not overridable via env */
		1586	#ifndef _WIN32
		1587	if (flags & EVFLAG_FORKCHECK)
		1588	curpid = getpid ();
		1589	#endif
		1590
		1591	if (!(flags & EVFLAG_NOENV)
		1592	&& !enable_secure ()
		1593	&& getenv ("LIBEV_FLAGS"))
		1594	flags = atoi (getenv ("LIBEV_FLAGS"));
1446		1595
1447	ev_rt_now = ev_time ();	1596	ev_rt_now = ev_time ();
1448	mn_now = get_clock ();	1597	mn_now = get_clock ();
1449	now_floor = mn_now;	1598	now_floor = mn_now;
1450	rtmn_diff = ev_rt_now - mn_now;	1599	rtmn_diff = ev_rt_now - mn_now;
…		…
1454		1603
1455	io_blocktime = 0.;	1604	io_blocktime = 0.;
1456	timeout_blocktime = 0.;	1605	timeout_blocktime = 0.;
1457	backend = 0;	1606	backend = 0;
1458	backend_fd = -1;	1607	backend_fd = -1;
1459	gotasync = 0;	1608	sig_pending = 0;
		1609	#if EV_ASYNC_ENABLE
		1610	async_pending = 0;
		1611	#endif
1460	#if EV_USE_INOTIFY	1612	#if EV_USE_INOTIFY
1461	fs_fd = -2;	1613	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1462	#endif	1614	#endif
1463		1615	#if EV_USE_SIGNALFD
1464	/* pid check not overridable via env */	1616	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1465	#ifndef _WIN32
1466	if (flags & EVFLAG_FORKCHECK)
1467	curpid = getpid ();
1468	#endif	1617	#endif
1469
1470	if (!(flags & EVFLAG_NOENV)
1471	&& !enable_secure ()
1472	&& getenv ("LIBEV_FLAGS"))
1473	flags = atoi (getenv ("LIBEV_FLAGS"));
1474		1618
1475	if (!(flags & 0x0000ffffU))	1619	if (!(flags & 0x0000ffffU))
1476	flags \|= ev_recommended_backends ();	1620	flags \|= ev_recommended_backends ();
1477		1621
1478	#if EV_USE_PORT	1622	#if EV_USE_PORT
…		…
1504	{	1648	{
1505	int i;	1649	int i;
1506		1650
1507	if (ev_is_active (&pipe_w))	1651	if (ev_is_active (&pipe_w))
1508	{	1652	{
1509	ev_ref (EV_A); /* signal watcher */	1653	/ev_ref (EV_A);/
1510	ev_io_stop (EV_A_ &pipe_w);	1654	/ev_io_stop (EV_A_ &pipe_w);/
1511		1655
1512	#if EV_USE_EVENTFD	1656	#if EV_USE_EVENTFD
1513	if (evfd >= 0)	1657	if (evfd >= 0)
1514	close (evfd);	1658	close (evfd);
1515	#endif	1659	#endif
1516		1660
1517	if (evpipe [0] >= 0)	1661	if (evpipe [0] >= 0)
1518	{	1662	{
1519	close (evpipe [0]);	1663	EV_WIN32_CLOSE_FD (evpipe [0]);
1520	close (evpipe [1]);	1664	EV_WIN32_CLOSE_FD (evpipe [1]);
1521	}	1665	}
1522	}	1666	}
		1667
		1668	#if EV_USE_SIGNALFD
		1669	if (ev_is_active (&sigfd_w))
		1670	close (sigfd);
		1671	#endif
1523		1672
1524	#if EV_USE_INOTIFY	1673	#if EV_USE_INOTIFY
1525	if (fs_fd >= 0)	1674	if (fs_fd >= 0)
1526	close (fs_fd);	1675	close (fs_fd);
1527	#endif	1676	#endif
…		…
1551	#if EV_IDLE_ENABLE	1700	#if EV_IDLE_ENABLE
1552	array_free (idle, [i]);	1701	array_free (idle, [i]);
1553	#endif	1702	#endif
1554	}	1703	}
1555		1704
1556	ev_free (anfds); anfdmax = 0;	1705	ev_free (anfds); anfds = 0; anfdmax = 0;
1557		1706
1558	/* have to use the microsoft-never-gets-it-right macro */	1707	/* have to use the microsoft-never-gets-it-right macro */
1559	array_free (rfeed, EMPTY);	1708	array_free (rfeed, EMPTY);
1560	array_free (fdchange, EMPTY);	1709	array_free (fdchange, EMPTY);
1561	array_free (timer, EMPTY);	1710	array_free (timer, EMPTY);
…		…
1596		1745
1597	if (ev_is_active (&pipe_w))	1746	if (ev_is_active (&pipe_w))
1598	{	1747	{
1599	/* this "locks" the handlers against writing to the pipe */	1748	/* this "locks" the handlers against writing to the pipe */
1600	/* while we modify the fd vars */	1749	/* while we modify the fd vars */
1601	gotsig = 1;	1750	sig_pending = 1;
1602	#if EV_ASYNC_ENABLE	1751	#if EV_ASYNC_ENABLE
1603	gotasync = 1;	1752	async_pending = 1;
1604	#endif	1753	#endif
1605		1754
1606	ev_ref (EV_A);	1755	ev_ref (EV_A);
1607	ev_io_stop (EV_A_ &pipe_w);	1756	ev_io_stop (EV_A_ &pipe_w);
1608		1757
…		…
1611	close (evfd);	1760	close (evfd);
1612	#endif	1761	#endif
1613		1762
1614	if (evpipe [0] >= 0)	1763	if (evpipe [0] >= 0)
1615	{	1764	{
1616	close (evpipe [0]);	1765	EV_WIN32_CLOSE_FD (evpipe [0]);
1617	close (evpipe [1]);	1766	EV_WIN32_CLOSE_FD (evpipe [1]);
1618	}	1767	}
1619		1768
1620	evpipe_init (EV_A);	1769	evpipe_init (EV_A);
1621	/* now iterate over everything, in case we missed something */	1770	/* now iterate over everything, in case we missed something */
1622	pipecb (EV_A_ &pipe_w, EV_READ);	1771	pipecb (EV_A_ &pipe_w, EV_READ);
…		…
1628	#if EV_MULTIPLICITY	1777	#if EV_MULTIPLICITY
1629		1778
1630	struct ev_loop *	1779	struct ev_loop *
1631	ev_loop_new (unsigned int flags)	1780	ev_loop_new (unsigned int flags)
1632	{	1781	{
1633	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));	1782	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1634		1783
1635	memset (loop, 0, sizeof (struct ev_loop));	1784	memset (EV_A, 0, sizeof (struct ev_loop));
1636
1637	loop_init (EV_A_ flags);	1785	loop_init (EV_A_ flags);
1638		1786
1639	if (ev_backend (EV_A))	1787	if (ev_backend (EV_A))
1640	return loop;	1788	return EV_A;
1641		1789
1642	return 0;	1790	return 0;
1643	}	1791	}
1644		1792
1645	void	1793	void
…		…
1749	assert (checkmax >= checkcnt);	1897	assert (checkmax >= checkcnt);
1750	array_verify (EV_A_ (W *)checks, checkcnt);	1898	array_verify (EV_A_ (W *)checks, checkcnt);
1751		1899
1752	# if 0	1900	# if 0
1753	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	1901	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
1754	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)	1902	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1755	# endif	1903	# endif
1756	#endif	1904	#endif
1757	}	1905	}
1758	#endif	1906	#endif
1759		1907
…		…
1766	#endif	1914	#endif
1767	{	1915	{
1768	if (!ev_default_loop_ptr)	1916	if (!ev_default_loop_ptr)
1769	{	1917	{
1770	#if EV_MULTIPLICITY	1918	#if EV_MULTIPLICITY
1771	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1919	EV_P = ev_default_loop_ptr = &default_loop_struct;
1772	#else	1920	#else
1773	ev_default_loop_ptr = 1;	1921	ev_default_loop_ptr = 1;
1774	#endif	1922	#endif
1775		1923
1776	loop_init (EV_A_ flags);	1924	loop_init (EV_A_ flags);
…		…
1793		1941
1794	void	1942	void
1795	ev_default_destroy (void)	1943	ev_default_destroy (void)
1796	{	1944	{
1797	#if EV_MULTIPLICITY	1945	#if EV_MULTIPLICITY
1798	struct ev_loop *loop = ev_default_loop_ptr;	1946	EV_P = ev_default_loop_ptr;
1799	#endif	1947	#endif
1800		1948
1801	ev_default_loop_ptr = 0;	1949	ev_default_loop_ptr = 0;
1802		1950
1803	#ifndef _WIN32	1951	#ifndef _WIN32
…		…
1810		1958
1811	void	1959	void
1812	ev_default_fork (void)	1960	ev_default_fork (void)
1813	{	1961	{
1814	#if EV_MULTIPLICITY	1962	#if EV_MULTIPLICITY
1815	struct ev_loop *loop = ev_default_loop_ptr;	1963	EV_P = ev_default_loop_ptr;
1816	#endif	1964	#endif
1817		1965
1818	postfork = 1; /* must be in line with ev_loop_fork */	1966	postfork = 1; /* must be in line with ev_loop_fork */
1819	}	1967	}
1820		1968
…		…
1822		1970
1823	void	1971	void
1824	ev_invoke (EV_P_ void *w, int revents)	1972	ev_invoke (EV_P_ void *w, int revents)
1825	{	1973	{
1826	EV_CB_INVOKE ((W)w, revents);	1974	EV_CB_INVOKE ((W)w, revents);
		1975	}
		1976
		1977	unsigned int
		1978	ev_pending_count (EV_P)
		1979	{
		1980	int pri;
		1981	unsigned int count = 0;
		1982
		1983	for (pri = NUMPRI; pri--; )
		1984	count += pendingcnt [pri];
		1985
		1986	return count;
1827	}	1987	}
1828		1988
1829	void noinline	1989	void noinline
1830	ev_invoke_pending (EV_P)	1990	ev_invoke_pending (EV_P)
1831	{	1991	{
…		…
2003	ANHE_at_cache (*he);	2163	ANHE_at_cache (*he);
2004	}	2164	}
2005	}	2165	}
2006		2166
2007	/* fetch new monotonic and realtime times from the kernel */	2167	/* fetch new monotonic and realtime times from the kernel */
2008	/* also detetc if there was a timejump, and act accordingly */	2168	/* also detect if there was a timejump, and act accordingly */
2009	inline_speed void	2169	inline_speed void
2010	time_update (EV_P_ ev_tstamp max_block)	2170	time_update (EV_P_ ev_tstamp max_block)
2011	{	2171	{
2012	#if EV_USE_MONOTONIC	2172	#if EV_USE_MONOTONIC
2013	if (expect_true (have_monotonic))	2173	if (expect_true (have_monotonic))
…		…
2077	{	2237	{
2078	#if EV_MINIMAL < 2	2238	#if EV_MINIMAL < 2
2079	++loop_depth;	2239	++loop_depth;
2080	#endif	2240	#endif
2081		2241
		2242	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2243
2082	loop_done = EVUNLOOP_CANCEL;	2244	loop_done = EVUNLOOP_CANCEL;
2083		2245
2084	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */	2246	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2085		2247
2086	do	2248	do
…		…
2113	{	2275	{
2114	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2276	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2115	EV_INVOKE_PENDING;	2277	EV_INVOKE_PENDING;
2116	}	2278	}
2117		2279
		2280	if (expect_false (loop_done))
		2281	break;
		2282
2118	/* we might have forked, so reify kernel state if necessary */	2283	/* we might have forked, so reify kernel state if necessary */
2119	if (expect_false (postfork))	2284	if (expect_false (postfork))
2120	loop_fork (EV_A);	2285	loop_fork (EV_A);
2121		2286
2122	/* update fd-related kernel structures */	2287	/* update fd-related kernel structures */
…		…
2172	}	2337	}
2173		2338
2174	#if EV_MINIMAL < 2	2339	#if EV_MINIMAL < 2
2175	++loop_count;	2340	++loop_count;
2176	#endif	2341	#endif
		2342	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2177	backend_poll (EV_A_ waittime);	2343	backend_poll (EV_A_ waittime);
		2344	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2178		2345
2179	/* update ev_rt_now, do magic */	2346	/* update ev_rt_now, do magic */
2180	time_update (EV_A_ waittime + sleeptime);	2347	time_update (EV_A_ waittime + sleeptime);
2181	}	2348	}
2182		2349
…		…
2267	inline_size void	2434	inline_size void
2268	wlist_del (WL *head, WL elem)	2435	wlist_del (WL *head, WL elem)
2269	{	2436	{
2270	while (*head)	2437	while (*head)
2271	{	2438	{
2272	if (*head == elem)	2439	if (expect_true (*head == elem))
2273	{	2440	{
2274	*head = elem->next;	2441	*head = elem->next;
2275	return;	2442	break;
2276	}	2443	}
2277		2444
2278	head = &(*head)->next;	2445	head = &(*head)->next;
2279	}	2446	}
2280	}	2447	}
…		…
2348		2515
2349	ev_start (EV_A_ (W)w, 1);	2516	ev_start (EV_A_ (W)w, 1);
2350	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2517	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2351	wlist_add (&anfds[fd].head, (WL)w);	2518	wlist_add (&anfds[fd].head, (WL)w);
2352		2519
2353	fd_change (EV_A_ fd, w->events & EV__IOFDSET \| 1);	2520	fd_change (EV_A_ fd, w->events & EV__IOFDSET \| EV_ANFD_REIFY);
2354	w->events &= ~EV__IOFDSET;	2521	w->events &= ~EV__IOFDSET;
2355		2522
2356	EV_FREQUENT_CHECK;	2523	EV_FREQUENT_CHECK;
2357	}	2524	}
2358		2525
…		…
2452	}	2619	}
2453		2620
2454	EV_FREQUENT_CHECK;	2621	EV_FREQUENT_CHECK;
2455	}	2622	}
2456		2623
		2624	ev_tstamp
		2625	ev_timer_remaining (EV_P_ ev_timer *w)
		2626	{
		2627	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
		2628	}
		2629
2457	#if EV_PERIODIC_ENABLE	2630	#if EV_PERIODIC_ENABLE
2458	void noinline	2631	void noinline
2459	ev_periodic_start (EV_P_ ev_periodic *w)	2632	ev_periodic_start (EV_P_ ev_periodic *w)
2460	{	2633	{
2461	if (expect_false (ev_is_active (w)))	2634	if (expect_false (ev_is_active (w)))
…		…
2528	#endif	2701	#endif
2529		2702
2530	void noinline	2703	void noinline
2531	ev_signal_start (EV_P_ ev_signal *w)	2704	ev_signal_start (EV_P_ ev_signal *w)
2532	{	2705	{
2533	#if EV_MULTIPLICITY
2534	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2535	#endif
2536	if (expect_false (ev_is_active (w)))	2706	if (expect_false (ev_is_active (w)))
2537	return;	2707	return;
2538		2708
2539	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));	2709	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2540		2710
2541	evpipe_init (EV_A);	2711	#if EV_MULTIPLICITY
		2712	assert (("libev: a signal must not be attached to two different loops",
		2713	!signals [w->signum - 1].loop \|\| signals [w->signum - 1].loop == loop));
2542		2714
2543	EV_FREQUENT_CHECK;	2715	signals [w->signum - 1].loop = EV_A;
		2716	#endif
2544		2717
		2718	EV_FREQUENT_CHECK;
		2719
		2720	#if EV_USE_SIGNALFD
		2721	if (sigfd == -2)
2545	{	2722	{
2546	#ifndef _WIN32	2723	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK \| SFD_CLOEXEC);
2547	sigset_t full, prev;	2724	if (sigfd < 0 && errno == EINVAL)
2548	sigfillset (&full);	2725	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2549	sigprocmask (SIG_SETMASK, &full, &prev);
2550	#endif
2551		2726
2552	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);	2727	if (sigfd >= 0)
		2728	{
		2729	fd_intern (sigfd); /* doing it twice will not hurt */
2553		2730
2554	#ifndef _WIN32	2731	sigemptyset (&sigfd_set);
2555	sigprocmask (SIG_SETMASK, &prev, 0);	2732
2556	#endif	2733	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2734	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2735	ev_io_start (EV_A_ &sigfd_w);
		2736	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2737	}
2557	}	2738	}
		2739
		2740	if (sigfd >= 0)
		2741	{
		2742	/* TODO: check .head */
		2743	sigaddset (&sigfd_set, w->signum);
		2744	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2745
		2746	signalfd (sigfd, &sigfd_set, 0);
		2747	}
		2748	#endif
2558		2749
2559	ev_start (EV_A_ (W)w, 1);	2750	ev_start (EV_A_ (W)w, 1);
2560	wlist_add (&signals [w->signum - 1].head, (WL)w);	2751	wlist_add (&signals [w->signum - 1].head, (WL)w);
2561		2752
2562	if (!((WL)w)->next)	2753	if (!((WL)w)->next)
		2754	# if EV_USE_SIGNALFD
		2755	if (sigfd < 0) /TODO/
		2756	# endif
2563	{	2757	{
2564	#if _WIN32	2758	# ifdef _WIN32
		2759	evpipe_init (EV_A);
		2760
2565	signal (w->signum, ev_sighandler);	2761	signal (w->signum, ev_sighandler);
2566	#else	2762	# else
2567	struct sigaction sa;	2763	struct sigaction sa;
		2764
		2765	evpipe_init (EV_A);
		2766
2568	sa.sa_handler = ev_sighandler;	2767	sa.sa_handler = ev_sighandler;
2569	sigfillset (&sa.sa_mask);	2768	sigfillset (&sa.sa_mask);
2570	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2769	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2571	sigaction (w->signum, &sa, 0);	2770	sigaction (w->signum, &sa, 0);
		2771
		2772	sigemptyset (&sa.sa_mask);
		2773	sigaddset (&sa.sa_mask, w->signum);
		2774	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2572	#endif	2775	#endif
2573	}	2776	}
2574		2777
2575	EV_FREQUENT_CHECK;	2778	EV_FREQUENT_CHECK;
2576	}	2779	}
2577		2780
2578	void noinline	2781	void noinline
…		…
2586		2789
2587	wlist_del (&signals [w->signum - 1].head, (WL)w);	2790	wlist_del (&signals [w->signum - 1].head, (WL)w);
2588	ev_stop (EV_A_ (W)w);	2791	ev_stop (EV_A_ (W)w);
2589		2792
2590	if (!signals [w->signum - 1].head)	2793	if (!signals [w->signum - 1].head)
		2794	{
		2795	#if EV_MULTIPLICITY
		2796	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2797	#endif
		2798	#if EV_USE_SIGNALFD
		2799	if (sigfd >= 0)
		2800	{
		2801	sigset_t ss;
		2802
		2803	sigemptyset (&ss);
		2804	sigaddset (&ss, w->signum);
		2805	sigdelset (&sigfd_set, w->signum);
		2806
		2807	signalfd (sigfd, &sigfd_set, 0);
		2808	sigprocmask (SIG_UNBLOCK, &ss, 0);
		2809	}
		2810	else
		2811	#endif
2591	signal (w->signum, SIG_DFL);	2812	signal (w->signum, SIG_DFL);
		2813	}
2592		2814
2593	EV_FREQUENT_CHECK;	2815	EV_FREQUENT_CHECK;
2594	}	2816	}
2595		2817
2596	void	2818	void
…		…
2644	static void noinline	2866	static void noinline
2645	infy_add (EV_P_ ev_stat *w)	2867	infy_add (EV_P_ ev_stat *w)
2646	{	2868	{
2647	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB \| IN_DELETE_SELF \| IN_MOVE_SELF \| IN_MODIFY \| IN_DONT_FOLLOW \| IN_MASK_ADD);	2869	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB \| IN_DELETE_SELF \| IN_MOVE_SELF \| IN_MODIFY \| IN_DONT_FOLLOW \| IN_MASK_ADD);
2648		2870
2649	if (w->wd < 0)	2871	if (w->wd >= 0)
		2872	{
		2873	struct statfs sfs;
		2874
		2875	/* now local changes will be tracked by inotify, but remote changes won't */
		2876	/* unless the filesystem is known to be local, we therefore still poll */
		2877	/* also do poll on <2.6.25, but with normal frequency */
		2878
		2879	if (!fs_2625)
		2880	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		2881	else if (!statfs (w->path, &sfs)
		2882	&& (sfs.f_type == 0x1373 /* devfs */
		2883	\|\| sfs.f_type == 0xEF53 /* ext2/3 */
		2884	\|\| sfs.f_type == 0x3153464a /* jfs */
		2885	\|\| sfs.f_type == 0x52654973 /* reiser3 */
		2886	\|\| sfs.f_type == 0x01021994 /* tempfs */
		2887	\|\| sfs.f_type == 0x58465342 /* xfs */))
		2888	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
		2889	else
		2890	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2650	{	2891	}
		2892	else
		2893	{
		2894	/* can't use inotify, continue to stat */
2651	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;	2895	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2652	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2653		2896
2654	/* monitor some parent directory for speedup hints */	2897	/* if path is not there, monitor some parent directory for speedup hints */
2655	/* note that exceeding the hardcoded path limit is not a correctness issue, */	2898	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2656	/* but an efficiency issue only */	2899	/* but an efficiency issue only */
2657	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)	2900	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)
2658	{	2901	{
2659	char path [4096];	2902	char path [4096];
…		…
2675	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));	2918	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));
2676	}	2919	}
2677	}	2920	}
2678		2921
2679	if (w->wd >= 0)	2922	if (w->wd >= 0)
2680	{
2681	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2923	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2682		2924
2683	/* now local changes will be tracked by inotify, but remote changes won't */	2925	/* now re-arm timer, if required */
2684	/* unless the filesystem it known to be local, we therefore still poll */	2926	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2685	/* also do poll on <2.6.25, but with normal frequency */
2686	struct statfs sfs;
2687
2688	if (fs_2625 && !statfs (w->path, &sfs))
2689	if (sfs.f_type == 0x1373 /* devfs */
2690	\|\| sfs.f_type == 0xEF53 /* ext2/3 */
2691	\|\| sfs.f_type == 0x3153464a /* jfs */
2692	\|\| sfs.f_type == 0x52654973 /* reiser3 */
2693	\|\| sfs.f_type == 0x01021994 /* tempfs */
2694	\|\| sfs.f_type == 0x58465342 /* xfs */)
2695	return;
2696
2697	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2698	ev_timer_again (EV_A_ &w->timer);	2927	ev_timer_again (EV_A_ &w->timer);
2699	}	2928	if (ev_is_active (&w->timer)) ev_unref (EV_A);
2700	}	2929	}
2701		2930
2702	static void noinline	2931	static void noinline
2703	infy_del (EV_P_ ev_stat *w)	2932	infy_del (EV_P_ ev_stat *w)
2704	{	2933	{
…		…
2780	return;	3009	return;
2781		3010
2782	fs_2625 = 1;	3011	fs_2625 = 1;
2783	}	3012	}
2784		3013
		3014	inline_size int
		3015	infy_newfd (void)
		3016	{
		3017	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3018	int fd = inotify_init1 (IN_CLOEXEC \| IN_NONBLOCK);
		3019	if (fd >= 0)
		3020	return fd;
		3021	#endif
		3022	return inotify_init ();
		3023	}
		3024
2785	inline_size void	3025	inline_size void
2786	infy_init (EV_P)	3026	infy_init (EV_P)
2787	{	3027	{
2788	if (fs_fd != -2)	3028	if (fs_fd != -2)
2789	return;	3029	return;
2790		3030
2791	fs_fd = -1;	3031	fs_fd = -1;
2792		3032
2793	check_2625 (EV_A);	3033	check_2625 (EV_A);
2794		3034
2795	fs_fd = inotify_init ();	3035	fs_fd = infy_newfd ();
2796		3036
2797	if (fs_fd >= 0)	3037	if (fs_fd >= 0)
2798	{	3038	{
		3039	fd_intern (fs_fd);
2799	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3040	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2800	ev_set_priority (&fs_w, EV_MAXPRI);	3041	ev_set_priority (&fs_w, EV_MAXPRI);
2801	ev_io_start (EV_A_ &fs_w);	3042	ev_io_start (EV_A_ &fs_w);
		3043	ev_unref (EV_A);
2802	}	3044	}
2803	}	3045	}
2804		3046
2805	inline_size void	3047	inline_size void
2806	infy_fork (EV_P)	3048	infy_fork (EV_P)
…		…
2808	int slot;	3050	int slot;
2809		3051
2810	if (fs_fd < 0)	3052	if (fs_fd < 0)
2811	return;	3053	return;
2812		3054
		3055	ev_ref (EV_A);
		3056	ev_io_stop (EV_A_ &fs_w);
2813	close (fs_fd);	3057	close (fs_fd);
2814	fs_fd = inotify_init ();	3058	fs_fd = infy_newfd ();
		3059
		3060	if (fs_fd >= 0)
		3061	{
		3062	fd_intern (fs_fd);
		3063	ev_io_set (&fs_w, fs_fd, EV_READ);
		3064	ev_io_start (EV_A_ &fs_w);
		3065	ev_unref (EV_A);
		3066	}
2815		3067
2816	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3068	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2817	{	3069	{
2818	WL w_ = fs_hash [slot].head;	3070	WL w_ = fs_hash [slot].head;
2819	fs_hash [slot].head = 0;	3071	fs_hash [slot].head = 0;
…		…
2826	w->wd = -1;	3078	w->wd = -1;
2827		3079
2828	if (fs_fd >= 0)	3080	if (fs_fd >= 0)
2829	infy_add (EV_A_ w); /* re-add, no matter what */	3081	infy_add (EV_A_ w); /* re-add, no matter what */
2830	else	3082	else
		3083	{
		3084	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3085	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2831	ev_timer_again (EV_A_ &w->timer);	3086	ev_timer_again (EV_A_ &w->timer);
		3087	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		3088	}
2832	}	3089	}
2833	}	3090	}
2834	}	3091	}
2835		3092
2836	#endif	3093	#endif
…		…
2853	static void noinline	3110	static void noinline
2854	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	3111	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2855	{	3112	{
2856	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));	3113	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
2857		3114
2858	/* we copy this here each the time so that */	3115	ev_statdata prev = w->attr;
2859	/* prev has the old value when the callback gets invoked */
2860	w->prev = w->attr;
2861	ev_stat_stat (EV_A_ w);	3116	ev_stat_stat (EV_A_ w);
2862		3117
2863	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */	3118	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2864	if (	3119	if (
2865	w->prev.st_dev != w->attr.st_dev	3120	prev.st_dev != w->attr.st_dev
2866	\|\| w->prev.st_ino != w->attr.st_ino	3121	\|\| prev.st_ino != w->attr.st_ino
2867	\|\| w->prev.st_mode != w->attr.st_mode	3122	\|\| prev.st_mode != w->attr.st_mode
2868	\|\| w->prev.st_nlink != w->attr.st_nlink	3123	\|\| prev.st_nlink != w->attr.st_nlink
2869	\|\| w->prev.st_uid != w->attr.st_uid	3124	\|\| prev.st_uid != w->attr.st_uid
2870	\|\| w->prev.st_gid != w->attr.st_gid	3125	\|\| prev.st_gid != w->attr.st_gid
2871	\|\| w->prev.st_rdev != w->attr.st_rdev	3126	\|\| prev.st_rdev != w->attr.st_rdev
2872	\|\| w->prev.st_size != w->attr.st_size	3127	\|\| prev.st_size != w->attr.st_size
2873	\|\| w->prev.st_atime != w->attr.st_atime	3128	\|\| prev.st_atime != w->attr.st_atime
2874	\|\| w->prev.st_mtime != w->attr.st_mtime	3129	\|\| prev.st_mtime != w->attr.st_mtime
2875	\|\| w->prev.st_ctime != w->attr.st_ctime	3130	\|\| prev.st_ctime != w->attr.st_ctime
2876	) {	3131	) {
		3132	/* we only update w->prev on actual differences */
		3133	/* in case we test more often than invoke the callback, */
		3134	/* to ensure that prev is always different to attr */
		3135	w->prev = prev;
		3136
2877	#if EV_USE_INOTIFY	3137	#if EV_USE_INOTIFY
2878	if (fs_fd >= 0)	3138	if (fs_fd >= 0)
2879	{	3139	{
2880	infy_del (EV_A_ w);	3140	infy_del (EV_A_ w);
2881	infy_add (EV_A_ w);	3141	infy_add (EV_A_ w);
…		…
2906		3166
2907	if (fs_fd >= 0)	3167	if (fs_fd >= 0)
2908	infy_add (EV_A_ w);	3168	infy_add (EV_A_ w);
2909	else	3169	else
2910	#endif	3170	#endif
		3171	{
2911	ev_timer_again (EV_A_ &w->timer);	3172	ev_timer_again (EV_A_ &w->timer);
		3173	ev_unref (EV_A);
		3174	}
2912		3175
2913	ev_start (EV_A_ (W)w, 1);	3176	ev_start (EV_A_ (W)w, 1);
2914		3177
2915	EV_FREQUENT_CHECK;	3178	EV_FREQUENT_CHECK;
2916	}	3179	}
…		…
2925	EV_FREQUENT_CHECK;	3188	EV_FREQUENT_CHECK;
2926		3189
2927	#if EV_USE_INOTIFY	3190	#if EV_USE_INOTIFY
2928	infy_del (EV_A_ w);	3191	infy_del (EV_A_ w);
2929	#endif	3192	#endif
		3193
		3194	if (ev_is_active (&w->timer))
		3195	{
		3196	ev_ref (EV_A);
2930	ev_timer_stop (EV_A_ &w->timer);	3197	ev_timer_stop (EV_A_ &w->timer);
		3198	}
2931		3199
2932	ev_stop (EV_A_ (W)w);	3200	ev_stop (EV_A_ (W)w);
2933		3201
2934	EV_FREQUENT_CHECK;	3202	EV_FREQUENT_CHECK;
2935	}	3203	}
…		…
3076	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3344	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3077	{	3345	{
3078	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));	3346	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
3079		3347
3080	{	3348	{
3081	struct ev_loop *loop = w->other;	3349	EV_P = w->other;
3082		3350
3083	while (fdchangecnt)	3351	while (fdchangecnt)
3084	{	3352	{
3085	fd_reify (EV_A);	3353	fd_reify (EV_A);
3086	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3354	ev_loop (EV_A_ EVLOOP_NONBLOCK);
…		…
3094	ev_embed w = (ev_embed )(((char *)fork_w) - offsetof (ev_embed, fork));	3362	ev_embed w = (ev_embed )(((char *)fork_w) - offsetof (ev_embed, fork));
3095		3363
3096	ev_embed_stop (EV_A_ w);	3364	ev_embed_stop (EV_A_ w);
3097		3365
3098	{	3366	{
3099	struct ev_loop *loop = w->other;	3367	EV_P = w->other;
3100		3368
3101	ev_loop_fork (EV_A);	3369	ev_loop_fork (EV_A);
3102	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3370	ev_loop (EV_A_ EVLOOP_NONBLOCK);
3103	}	3371	}
3104		3372
…		…
3118	{	3386	{
3119	if (expect_false (ev_is_active (w)))	3387	if (expect_false (ev_is_active (w)))
3120	return;	3388	return;
3121		3389
3122	{	3390	{
3123	struct ev_loop *loop = w->other;	3391	EV_P = w->other;
3124	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3392	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3125	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3393	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3126	}	3394	}
3127		3395
3128	EV_FREQUENT_CHECK;	3396	EV_FREQUENT_CHECK;
…		…
3240		3508
3241	void	3509	void
3242	ev_async_send (EV_P_ ev_async *w)	3510	ev_async_send (EV_P_ ev_async *w)
3243	{	3511	{
3244	w->sent = 1;	3512	w->sent = 1;
3245	evpipe_write (EV_A_ &gotasync);	3513	evpipe_write (EV_A_ &async_pending);
3246	}	3514	}
3247	#endif	3515	#endif
3248		3516
3249	/*****************************************************************************/	3517	/*****************************************************************************/
3250		3518
…		…
3399	if (types & EV_CHECK)	3667	if (types & EV_CHECK)
3400	for (i = checkcnt; i--; )	3668	for (i = checkcnt; i--; )
3401	cb (EV_A_ EV_CHECK, checks [i]);	3669	cb (EV_A_ EV_CHECK, checks [i]);
3402		3670
3403	if (types & EV_SIGNAL)	3671	if (types & EV_SIGNAL)
3404	for (i = 0; i < signalmax; ++i)	3672	for (i = 0; i < EV_NSIG - 1; ++i)
3405	for (wl = signals [i].head; wl; )	3673	for (wl = signals [i].head; wl; )
3406	{	3674	{
3407	wn = wl->next;	3675	wn = wl->next;
3408	cb (EV_A_ EV_SIGNAL, wl);	3676	cb (EV_A_ EV_SIGNAL, wl);
3409	wl = wn;	3677	wl = wn;

Diff Legend

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+Removed lines
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+Changed lines
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Comparing libev/ev.c (file contents): Revision 1.297 by root, Fri Jul 10 00:36:21 2009 UTC vs. Revision 1.325 by root, Sun Jan 24 12:31:55 2010 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.297 by root, Fri Jul 10 00:36:21 2009 UTC vs.
Revision 1.325 by root, Sun Jan 24 12:31:55 2010 UTC