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

Comparing libev/ev.c (file contents):
Revision 1.295 by root, Wed Jul 8 04:29:31 2009 UTC vs.
Revision 1.325 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
…		…
567		668
568	static int ev_default_loop_ptr;	669	static int ev_default_loop_ptr;
569		670
570	#endif	671	#endif
571		672
		673	#if EV_MINIMAL < 2
		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)
		676	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		677	#else
		678	# define EV_RELEASE_CB (void)0
		679	# define EV_ACQUIRE_CB (void)0
		680	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		681	#endif
		682
		683	#define EVUNLOOP_RECURSE 0x80
		684
572	/*****************************************************************************/	685	/*****************************************************************************/
573		686
574	#ifndef EV_HAVE_EV_TIME	687	#ifndef EV_HAVE_EV_TIME
575	ev_tstamp	688	ev_tstamp
576	ev_time (void)	689	ev_time (void)
…		…
632		745
633	tv.tv_sec = (time_t)delay;	746	tv.tv_sec = (time_t)delay;
634	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	747	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
635		748
636	/* 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 */
637	/* somehting not guaranteed by newer posix versions, but guaranteed */	750	/* something not guaranteed by newer posix versions, but guaranteed */
638	/* by older ones */	751	/* by older ones */
639	select (0, 0, 0, 0, &tv);	752	select (0, 0, 0, 0, &tv);
640	#endif	753	#endif
641	}	754	}
642	}	755	}
…		…
750	}	863	}
751		864
752	/*****************************************************************************/	865	/*****************************************************************************/
753		866
754	inline_speed void	867	inline_speed void
755	fd_event (EV_P_ int fd, int revents)	868	fd_event_nc (EV_P_ int fd, int revents)
756	{	869	{
757	ANFD *anfd = anfds + fd;	870	ANFD *anfd = anfds + fd;
758	ev_io *w;	871	ev_io *w;
759		872
760	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)
…		…
764	if (ev)	877	if (ev)
765	ev_feed_event (EV_A_ (W)w, ev);	878	ev_feed_event (EV_A_ (W)w, ev);
766	}	879	}
767	}	880	}
768		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
769	void	893	void
770	ev_feed_fd_event (EV_P_ int fd, int revents)	894	ev_feed_fd_event (EV_P_ int fd, int revents)
771	{	895	{
772	if (fd >= 0 && fd < anfdmax)	896	if (fd >= 0 && fd < anfdmax)
773	fd_event (EV_A_ fd, revents);	897	fd_event_nc (EV_A_ fd, revents);
774	}	898	}
775		899
776	/* make sure the external fd watch events are in-sync */	900	/* make sure the external fd watch events are in-sync */
777	/* with the kernel/libev internal state */	901	/* with the kernel/libev internal state */
778	inline_size void	902	inline_size void
…		…
793		917
794	#if EV_SELECT_IS_WINSOCKET	918	#if EV_SELECT_IS_WINSOCKET
795	if (events)	919	if (events)
796	{	920	{
797	unsigned long arg;	921	unsigned long arg;
798	#ifdef EV_FD_TO_WIN32_HANDLE
799	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	922	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
800	#else
801	anfd->handle = _get_osfhandle (fd);
802	#endif
803	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	923	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
804	}	924	}
805	#endif	925	#endif
806		926
807	{	927	{
…		…
850	/* check whether the given fd is atcually valid, for error recovery */	970	/* check whether the given fd is atcually valid, for error recovery */
851	inline_size int	971	inline_size int
852	fd_valid (int fd)	972	fd_valid (int fd)
853	{	973	{
854	#ifdef _WIN32	974	#ifdef _WIN32
855	return _get_osfhandle (fd) != -1;	975	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
856	#else	976	#else
857	return fcntl (fd, F_GETFD) != -1;	977	return fcntl (fd, F_GETFD) != -1;
858	#endif	978	#endif
859	}	979	}
860		980
…		…
878		998
879	for (fd = anfdmax; fd--; )	999	for (fd = anfdmax; fd--; )
880	if (anfds [fd].events)	1000	if (anfds [fd].events)
881	{	1001	{
882	fd_kill (EV_A_ fd);	1002	fd_kill (EV_A_ fd);
883	return;	1003	break;
884	}	1004	}
885	}	1005	}
886		1006
887	/* 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 */
888	static void noinline	1008	static void noinline
…		…
893	for (fd = 0; fd < anfdmax; ++fd)	1013	for (fd = 0; fd < anfdmax; ++fd)
894	if (anfds [fd].events)	1014	if (anfds [fd].events)
895	{	1015	{
896	anfds [fd].events = 0;	1016	anfds [fd].events = 0;
897	anfds [fd].emask = 0;	1017	anfds [fd].emask = 0;
898	fd_change (EV_A_ fd, EV__IOFDSET \| 1);	1018	fd_change (EV_A_ fd, EV__IOFDSET \| EV_ANFD_REIFY);
899	}	1019	}
900	}	1020	}
901		1021
902	/*****************************************************************************/	1022	/*****************************************************************************/
903		1023
…		…
978		1098
979	for (;;)	1099	for (;;)
980	{	1100	{
981	int c = k << 1;	1101	int c = k << 1;
982		1102
983	if (c > N + HEAP0 - 1)	1103	if (c >= N + HEAP0)
984	break;	1104	break;
985		1105
986	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])
987	? 1 : 0;	1107	? 1 : 0;
988		1108
…		…
1024		1144
1025	/* move an element suitably so it is in a correct place */	1145	/* move an element suitably so it is in a correct place */
1026	inline_size void	1146	inline_size void
1027	adjustheap (ANHE *heap, int N, int k)	1147	adjustheap (ANHE *heap, int N, int k)
1028	{	1148	{
1029	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)]))
1030	upheap (heap, k);	1150	upheap (heap, k);
1031	else	1151	else
1032	downheap (heap, N, k);	1152	downheap (heap, N, k);
1033	}	1153	}
1034		1154
…		…
1047	/*****************************************************************************/	1167	/*****************************************************************************/
1048		1168
1049	/* associate signal watchers to a signal signal */	1169	/* associate signal watchers to a signal signal */
1050	typedef struct	1170	typedef struct
1051	{	1171	{
		1172	EV_ATOMIC_T pending;
		1173	#if EV_MULTIPLICITY
		1174	EV_P;
		1175	#endif
1052	WL head;	1176	WL head;
1053	EV_ATOMIC_T gotsig;
1054	} ANSIG;	1177	} ANSIG;
1055		1178
1056	static ANSIG *signals;	1179	static ANSIG signals [EV_NSIG - 1];
1057	static int signalmax;
1058
1059	static EV_ATOMIC_T gotsig;
1060		1180
1061	/*****************************************************************************/	1181	/*****************************************************************************/
1062		1182
1063	/* used to prepare libev internal fd's */	1183	/* used to prepare libev internal fd's */
1064	/* this is not fork-safe */	1184	/* this is not fork-safe */
1065	inline_speed void	1185	inline_speed void
1066	fd_intern (int fd)	1186	fd_intern (int fd)
1067	{	1187	{
1068	#ifdef _WIN32	1188	#ifdef _WIN32
1069	unsigned long arg = 1;	1189	unsigned long arg = 1;
1070	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1190	ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1071	#else	1191	#else
1072	fcntl (fd, F_SETFD, FD_CLOEXEC);	1192	fcntl (fd, F_SETFD, FD_CLOEXEC);
1073	fcntl (fd, F_SETFL, O_NONBLOCK);	1193	fcntl (fd, F_SETFL, O_NONBLOCK);
1074	#endif	1194	#endif
1075	}	1195	}
…		…
1078	evpipe_init (EV_P)	1198	evpipe_init (EV_P)
1079	{	1199	{
1080	if (!ev_is_active (&pipe_w))	1200	if (!ev_is_active (&pipe_w))
1081	{	1201	{
1082	#if EV_USE_EVENTFD	1202	#if EV_USE_EVENTFD
		1203	evfd = eventfd (0, EFD_NONBLOCK \| EFD_CLOEXEC);
		1204	if (evfd < 0 && errno == EINVAL)
1083	if ((evfd = eventfd (0, 0)) >= 0)	1205	evfd = eventfd (0, 0);
		1206
		1207	if (evfd >= 0)
1084	{	1208	{
1085	evpipe [0] = -1;	1209	evpipe [0] = -1;
1086	fd_intern (evfd);	1210	fd_intern (evfd); /* doing it twice doesn't hurt */
1087	ev_io_set (&pipe_w, evfd, EV_READ);	1211	ev_io_set (&pipe_w, evfd, EV_READ);
1088	}	1212	}
1089	else	1213	else
1090	#endif	1214	#endif
1091	{	1215	{
…		…
1128	/* called whenever the libev signal pipe */	1252	/* called whenever the libev signal pipe */
1129	/* got some events (signal, async) */	1253	/* got some events (signal, async) */
1130	static void	1254	static void
1131	pipecb (EV_P_ ev_io *iow, int revents)	1255	pipecb (EV_P_ ev_io *iow, int revents)
1132	{	1256	{
		1257	int i;
		1258
1133	#if EV_USE_EVENTFD	1259	#if EV_USE_EVENTFD
1134	if (evfd >= 0)	1260	if (evfd >= 0)
1135	{	1261	{
1136	uint64_t counter;	1262	uint64_t counter;
1137	read (evfd, &counter, sizeof (uint64_t));	1263	read (evfd, &counter, sizeof (uint64_t));
…		…
1141	{	1267	{
1142	char dummy;	1268	char dummy;
1143	read (evpipe [0], &dummy, 1);	1269	read (evpipe [0], &dummy, 1);
1144	}	1270	}
1145		1271
1146	if (gotsig && ev_is_default_loop (EV_A))	1272	if (sig_pending)
1147	{	1273	{
1148	int signum;	1274	sig_pending = 0;
1149	gotsig = 0;
1150		1275
1151	for (signum = signalmax; signum--; )	1276	for (i = EV_NSIG - 1; i--; )
1152	if (signals [signum].gotsig)	1277	if (expect_false (signals [i].pending))
1153	ev_feed_signal_event (EV_A_ signum + 1);	1278	ev_feed_signal_event (EV_A_ i + 1);
1154	}	1279	}
1155		1280
1156	#if EV_ASYNC_ENABLE	1281	#if EV_ASYNC_ENABLE
1157	if (gotasync)	1282	if (async_pending)
1158	{	1283	{
1159	int i;	1284	async_pending = 0;
1160	gotasync = 0;
1161		1285
1162	for (i = asynccnt; i--; )	1286	for (i = asynccnt; i--; )
1163	if (asyncs [i]->sent)	1287	if (asyncs [i]->sent)
1164	{	1288	{
1165	asyncs [i]->sent = 0;	1289	asyncs [i]->sent = 0;
…		…
1173		1297
1174	static void	1298	static void
1175	ev_sighandler (int signum)	1299	ev_sighandler (int signum)
1176	{	1300	{
1177	#if EV_MULTIPLICITY	1301	#if EV_MULTIPLICITY
1178	struct ev_loop *loop = &default_loop_struct;	1302	EV_P = signals [signum - 1].loop;
1179	#endif	1303	#endif
1180		1304
1181	#if _WIN32	1305	#ifdef _WIN32
1182	signal (signum, ev_sighandler);	1306	signal (signum, ev_sighandler);
1183	#endif	1307	#endif
1184		1308
1185	signals [signum - 1].gotsig = 1;	1309	signals [signum - 1].pending = 1;
1186	evpipe_write (EV_A_ &gotsig);	1310	evpipe_write (EV_A_ &sig_pending);
1187	}	1311	}
1188		1312
1189	void noinline	1313	void noinline
1190	ev_feed_signal_event (EV_P_ int signum)	1314	ev_feed_signal_event (EV_P_ int signum)
1191	{	1315	{
1192	WL w;	1316	WL w;
1193		1317
		1318	if (expect_false (signum <= 0 \|\| signum > EV_NSIG))
		1319	return;
		1320
		1321	--signum;
		1322
1194	#if EV_MULTIPLICITY	1323	#if EV_MULTIPLICITY
1195	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 */
1196	#endif	1325	/* or, likely more useful, feeding a signal nobody is waiting for */
1197		1326
1198	--signum;	1327	if (expect_false (signals [signum].loop != EV_A))
1199
1200	if (signum < 0 \|\| signum >= signalmax)
1201	return;	1328	return;
		1329	#endif
1202		1330
1203	signals [signum].gotsig = 0;	1331	signals [signum].pending = 0;
1204		1332
1205	for (w = signals [signum].head; w; w = w->next)	1333	for (w = signals [signum].head; w; w = w->next)
1206	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1334	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1207	}	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
1208		1356
1209	/*****************************************************************************/	1357	/*****************************************************************************/
1210		1358
1211	static WL childs [EV_PID_HASHSIZE];	1359	static WL childs [EV_PID_HASHSIZE];
1212		1360
…		…
1357	ev_backend (EV_P)	1505	ev_backend (EV_P)
1358	{	1506	{
1359	return backend;	1507	return backend;
1360	}	1508	}
1361		1509
		1510	#if EV_MINIMAL < 2
1362	unsigned int	1511	unsigned int
1363	ev_loop_count (EV_P)	1512	ev_loop_count (EV_P)
1364	{	1513	{
1365	return loop_count;	1514	return loop_count;
1366	}	1515	}
…		…
1380	void	1529	void
1381	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1530	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1382	{	1531	{
1383	timeout_blocktime = interval;	1532	timeout_blocktime = interval;
1384	}	1533	}
		1534
		1535	void
		1536	ev_set_userdata (EV_P_ void *data)
		1537	{
		1538	userdata = data;
		1539	}
		1540
		1541	void *
		1542	ev_userdata (EV_P)
		1543	{
		1544	return userdata;
		1545	}
		1546
		1547	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1548	{
		1549	invoke_cb = invoke_pending_cb;
		1550	}
		1551
		1552	void ev_set_loop_release_cb (EV_P_ void (release)(EV_P), void (acquire)(EV_P))
		1553	{
		1554	release_cb = release;
		1555	acquire_cb = acquire;
		1556	}
		1557	#endif
1385		1558
1386	/* initialise a loop structure, must be zero-initialised */	1559	/* initialise a loop structure, must be zero-initialised */
1387	static void noinline	1560	static void noinline
1388	loop_init (EV_P_ unsigned int flags)	1561	loop_init (EV_P_ unsigned int flags)
1389	{	1562	{
…		…
1407	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1580	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1408	have_monotonic = 1;	1581	have_monotonic = 1;
1409	}	1582	}
1410	#endif	1583	#endif
1411		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"));
		1595
1412	ev_rt_now = ev_time ();	1596	ev_rt_now = ev_time ();
1413	mn_now = get_clock ();	1597	mn_now = get_clock ();
1414	now_floor = mn_now;	1598	now_floor = mn_now;
1415	rtmn_diff = ev_rt_now - mn_now;	1599	rtmn_diff = ev_rt_now - mn_now;
		1600	#if EV_MINIMAL < 2
		1601	invoke_cb = ev_invoke_pending;
		1602	#endif
1416		1603
1417	io_blocktime = 0.;	1604	io_blocktime = 0.;
1418	timeout_blocktime = 0.;	1605	timeout_blocktime = 0.;
1419	backend = 0;	1606	backend = 0;
1420	backend_fd = -1;	1607	backend_fd = -1;
1421	gotasync = 0;	1608	sig_pending = 0;
		1609	#if EV_ASYNC_ENABLE
		1610	async_pending = 0;
		1611	#endif
1422	#if EV_USE_INOTIFY	1612	#if EV_USE_INOTIFY
1423	fs_fd = -2;	1613	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1424	#endif	1614	#endif
1425		1615	#if EV_USE_SIGNALFD
1426	/* pid check not overridable via env */	1616	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1427	#ifndef _WIN32
1428	if (flags & EVFLAG_FORKCHECK)
1429	curpid = getpid ();
1430	#endif	1617	#endif
1431
1432	if (!(flags & EVFLAG_NOENV)
1433	&& !enable_secure ()
1434	&& getenv ("LIBEV_FLAGS"))
1435	flags = atoi (getenv ("LIBEV_FLAGS"));
1436		1618
1437	if (!(flags & 0x0000ffffU))	1619	if (!(flags & 0x0000ffffU))
1438	flags \|= ev_recommended_backends ();	1620	flags \|= ev_recommended_backends ();
1439		1621
1440	#if EV_USE_PORT	1622	#if EV_USE_PORT
…		…
1466	{	1648	{
1467	int i;	1649	int i;
1468		1650
1469	if (ev_is_active (&pipe_w))	1651	if (ev_is_active (&pipe_w))
1470	{	1652	{
1471	ev_ref (EV_A); /* signal watcher */	1653	/ev_ref (EV_A);/
1472	ev_io_stop (EV_A_ &pipe_w);	1654	/ev_io_stop (EV_A_ &pipe_w);/
1473		1655
1474	#if EV_USE_EVENTFD	1656	#if EV_USE_EVENTFD
1475	if (evfd >= 0)	1657	if (evfd >= 0)
1476	close (evfd);	1658	close (evfd);
1477	#endif	1659	#endif
1478		1660
1479	if (evpipe [0] >= 0)	1661	if (evpipe [0] >= 0)
1480	{	1662	{
1481	close (evpipe [0]);	1663	EV_WIN32_CLOSE_FD (evpipe [0]);
1482	close (evpipe [1]);	1664	EV_WIN32_CLOSE_FD (evpipe [1]);
1483	}	1665	}
1484	}	1666	}
		1667
		1668	#if EV_USE_SIGNALFD
		1669	if (ev_is_active (&sigfd_w))
		1670	close (sigfd);
		1671	#endif
1485		1672
1486	#if EV_USE_INOTIFY	1673	#if EV_USE_INOTIFY
1487	if (fs_fd >= 0)	1674	if (fs_fd >= 0)
1488	close (fs_fd);	1675	close (fs_fd);
1489	#endif	1676	#endif
…		…
1513	#if EV_IDLE_ENABLE	1700	#if EV_IDLE_ENABLE
1514	array_free (idle, [i]);	1701	array_free (idle, [i]);
1515	#endif	1702	#endif
1516	}	1703	}
1517		1704
1518	ev_free (anfds); anfdmax = 0;	1705	ev_free (anfds); anfds = 0; anfdmax = 0;
1519		1706
1520	/* have to use the microsoft-never-gets-it-right macro */	1707	/* have to use the microsoft-never-gets-it-right macro */
1521	array_free (rfeed, EMPTY);	1708	array_free (rfeed, EMPTY);
1522	array_free (fdchange, EMPTY);	1709	array_free (fdchange, EMPTY);
1523	array_free (timer, EMPTY);	1710	array_free (timer, EMPTY);
…		…
1558		1745
1559	if (ev_is_active (&pipe_w))	1746	if (ev_is_active (&pipe_w))
1560	{	1747	{
1561	/* this "locks" the handlers against writing to the pipe */	1748	/* this "locks" the handlers against writing to the pipe */
1562	/* while we modify the fd vars */	1749	/* while we modify the fd vars */
1563	gotsig = 1;	1750	sig_pending = 1;
1564	#if EV_ASYNC_ENABLE	1751	#if EV_ASYNC_ENABLE
1565	gotasync = 1;	1752	async_pending = 1;
1566	#endif	1753	#endif
1567		1754
1568	ev_ref (EV_A);	1755	ev_ref (EV_A);
1569	ev_io_stop (EV_A_ &pipe_w);	1756	ev_io_stop (EV_A_ &pipe_w);
1570		1757
…		…
1573	close (evfd);	1760	close (evfd);
1574	#endif	1761	#endif
1575		1762
1576	if (evpipe [0] >= 0)	1763	if (evpipe [0] >= 0)
1577	{	1764	{
1578	close (evpipe [0]);	1765	EV_WIN32_CLOSE_FD (evpipe [0]);
1579	close (evpipe [1]);	1766	EV_WIN32_CLOSE_FD (evpipe [1]);
1580	}	1767	}
1581		1768
1582	evpipe_init (EV_A);	1769	evpipe_init (EV_A);
1583	/* now iterate over everything, in case we missed something */	1770	/* now iterate over everything, in case we missed something */
1584	pipecb (EV_A_ &pipe_w, EV_READ);	1771	pipecb (EV_A_ &pipe_w, EV_READ);
…		…
1590	#if EV_MULTIPLICITY	1777	#if EV_MULTIPLICITY
1591		1778
1592	struct ev_loop *	1779	struct ev_loop *
1593	ev_loop_new (unsigned int flags)	1780	ev_loop_new (unsigned int flags)
1594	{	1781	{
1595	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));
1596		1783
1597	memset (loop, 0, sizeof (struct ev_loop));	1784	memset (EV_A, 0, sizeof (struct ev_loop));
1598
1599	loop_init (EV_A_ flags);	1785	loop_init (EV_A_ flags);
1600		1786
1601	if (ev_backend (EV_A))	1787	if (ev_backend (EV_A))
1602	return loop;	1788	return EV_A;
1603		1789
1604	return 0;	1790	return 0;
1605	}	1791	}
1606		1792
1607	void	1793	void
…		…
1614	void	1800	void
1615	ev_loop_fork (EV_P)	1801	ev_loop_fork (EV_P)
1616	{	1802	{
1617	postfork = 1; /* must be in line with ev_default_fork */	1803	postfork = 1; /* must be in line with ev_default_fork */
1618	}	1804	}
		1805	#endif /* multiplicity */
1619		1806
1620	#if EV_VERIFY	1807	#if EV_VERIFY
1621	static void noinline	1808	static void noinline
1622	verify_watcher (EV_P_ W w)	1809	verify_watcher (EV_P_ W w)
1623	{	1810	{
…		…
1651	verify_watcher (EV_A_ ws [cnt]);	1838	verify_watcher (EV_A_ ws [cnt]);
1652	}	1839	}
1653	}	1840	}
1654	#endif	1841	#endif
1655		1842
		1843	#if EV_MINIMAL < 2
1656	void	1844	void
1657	ev_loop_verify (EV_P)	1845	ev_loop_verify (EV_P)
1658	{	1846	{
1659	#if EV_VERIFY	1847	#if EV_VERIFY
1660	int i;	1848	int i;
…		…
1709	assert (checkmax >= checkcnt);	1897	assert (checkmax >= checkcnt);
1710	array_verify (EV_A_ (W *)checks, checkcnt);	1898	array_verify (EV_A_ (W *)checks, checkcnt);
1711		1899
1712	# if 0	1900	# if 0
1713	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)
1714	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)	1902	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1715	# endif
1716	#endif	1903	# endif
		1904	#endif
1717	}	1905	}
1718		1906	#endif
1719	#endif /* multiplicity */
1720		1907
1721	#if EV_MULTIPLICITY	1908	#if EV_MULTIPLICITY
1722	struct ev_loop *	1909	struct ev_loop *
1723	ev_default_loop_init (unsigned int flags)	1910	ev_default_loop_init (unsigned int flags)
1724	#else	1911	#else
…		…
1727	#endif	1914	#endif
1728	{	1915	{
1729	if (!ev_default_loop_ptr)	1916	if (!ev_default_loop_ptr)
1730	{	1917	{
1731	#if EV_MULTIPLICITY	1918	#if EV_MULTIPLICITY
1732	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1919	EV_P = ev_default_loop_ptr = &default_loop_struct;
1733	#else	1920	#else
1734	ev_default_loop_ptr = 1;	1921	ev_default_loop_ptr = 1;
1735	#endif	1922	#endif
1736		1923
1737	loop_init (EV_A_ flags);	1924	loop_init (EV_A_ flags);
…		…
1754		1941
1755	void	1942	void
1756	ev_default_destroy (void)	1943	ev_default_destroy (void)
1757	{	1944	{
1758	#if EV_MULTIPLICITY	1945	#if EV_MULTIPLICITY
1759	struct ev_loop *loop = ev_default_loop_ptr;	1946	EV_P = ev_default_loop_ptr;
1760	#endif	1947	#endif
1761		1948
1762	ev_default_loop_ptr = 0;	1949	ev_default_loop_ptr = 0;
1763		1950
1764	#ifndef _WIN32	1951	#ifndef _WIN32
…		…
1771		1958
1772	void	1959	void
1773	ev_default_fork (void)	1960	ev_default_fork (void)
1774	{	1961	{
1775	#if EV_MULTIPLICITY	1962	#if EV_MULTIPLICITY
1776	struct ev_loop *loop = ev_default_loop_ptr;	1963	EV_P = ev_default_loop_ptr;
1777	#endif	1964	#endif
1778		1965
1779	postfork = 1; /* must be in line with ev_loop_fork */	1966	postfork = 1; /* must be in line with ev_loop_fork */
1780	}	1967	}
1781		1968
…		…
1785	ev_invoke (EV_P_ void *w, int revents)	1972	ev_invoke (EV_P_ void *w, int revents)
1786	{	1973	{
1787	EV_CB_INVOKE ((W)w, revents);	1974	EV_CB_INVOKE ((W)w, revents);
1788	}	1975	}
1789		1976
1790	inline_speed void	1977	unsigned int
1791	call_pending (EV_P)	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;
		1987	}
		1988
		1989	void noinline
		1990	ev_invoke_pending (EV_P)
1792	{	1991	{
1793	int pri;	1992	int pri;
1794		1993
1795	for (pri = NUMPRI; pri--; )	1994	for (pri = NUMPRI; pri--; )
1796	while (pendingcnt [pri])	1995	while (pendingcnt [pri])
…		…
1964	ANHE_at_cache (*he);	2163	ANHE_at_cache (*he);
1965	}	2164	}
1966	}	2165	}
1967		2166
1968	/* fetch new monotonic and realtime times from the kernel */	2167	/* fetch new monotonic and realtime times from the kernel */
1969	/* also detetc if there was a timejump, and act accordingly */	2168	/* also detect if there was a timejump, and act accordingly */
1970	inline_speed void	2169	inline_speed void
1971	time_update (EV_P_ ev_tstamp max_block)	2170	time_update (EV_P_ ev_tstamp max_block)
1972	{	2171	{
1973	#if EV_USE_MONOTONIC	2172	#if EV_USE_MONOTONIC
1974	if (expect_true (have_monotonic))	2173	if (expect_true (have_monotonic))
…		…
2034	}	2233	}
2035		2234
2036	void	2235	void
2037	ev_loop (EV_P_ int flags)	2236	ev_loop (EV_P_ int flags)
2038	{	2237	{
		2238	#if EV_MINIMAL < 2
2039	++loop_depth;	2239	++loop_depth;
		2240	#endif
		2241
		2242	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2040		2243
2041	loop_done = EVUNLOOP_CANCEL;	2244	loop_done = EVUNLOOP_CANCEL;
2042		2245
2043	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2246	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2044		2247
2045	do	2248	do
2046	{	2249	{
2047	#if EV_VERIFY >= 2	2250	#if EV_VERIFY >= 2
2048	ev_loop_verify (EV_A);	2251	ev_loop_verify (EV_A);
…		…
2061	/* we might have forked, so queue fork handlers */	2264	/* we might have forked, so queue fork handlers */
2062	if (expect_false (postfork))	2265	if (expect_false (postfork))
2063	if (forkcnt)	2266	if (forkcnt)
2064	{	2267	{
2065	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2268	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2066	call_pending (EV_A);	2269	EV_INVOKE_PENDING;
2067	}	2270	}
2068	#endif	2271	#endif
2069		2272
2070	/* queue prepare watchers (and execute them) */	2273	/* queue prepare watchers (and execute them) */
2071	if (expect_false (preparecnt))	2274	if (expect_false (preparecnt))
2072	{	2275	{
2073	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2276	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2074	call_pending (EV_A);	2277	EV_INVOKE_PENDING;
2075	}	2278	}
		2279
		2280	if (expect_false (loop_done))
		2281	break;
2076		2282
2077	/* we might have forked, so reify kernel state if necessary */	2283	/* we might have forked, so reify kernel state if necessary */
2078	if (expect_false (postfork))	2284	if (expect_false (postfork))
2079	loop_fork (EV_A);	2285	loop_fork (EV_A);
2080		2286
…		…
2128	waittime -= sleeptime;	2334	waittime -= sleeptime;
2129	}	2335	}
2130	}	2336	}
2131	}	2337	}
2132		2338
		2339	#if EV_MINIMAL < 2
2133	++loop_count;	2340	++loop_count;
		2341	#endif
		2342	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2134	backend_poll (EV_A_ waittime);	2343	backend_poll (EV_A_ waittime);
		2344	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2135		2345
2136	/* update ev_rt_now, do magic */	2346	/* update ev_rt_now, do magic */
2137	time_update (EV_A_ waittime + sleeptime);	2347	time_update (EV_A_ waittime + sleeptime);
2138	}	2348	}
2139		2349
…		…
2150		2360
2151	/* queue check watchers, to be executed first */	2361	/* queue check watchers, to be executed first */
2152	if (expect_false (checkcnt))	2362	if (expect_false (checkcnt))
2153	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2363	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2154		2364
2155	call_pending (EV_A);	2365	EV_INVOKE_PENDING;
2156	}	2366	}
2157	while (expect_true (	2367	while (expect_true (
2158	activecnt	2368	activecnt
2159	&& !loop_done	2369	&& !loop_done
2160	&& !(flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK))	2370	&& !(flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK))
2161	));	2371	));
2162		2372
2163	if (loop_done == EVUNLOOP_ONE)	2373	if (loop_done == EVUNLOOP_ONE)
2164	loop_done = EVUNLOOP_CANCEL;	2374	loop_done = EVUNLOOP_CANCEL;
2165		2375
		2376	#if EV_MINIMAL < 2
2166	--loop_depth;	2377	--loop_depth;
		2378	#endif
2167	}	2379	}
2168		2380
2169	void	2381	void
2170	ev_unloop (EV_P_ int how)	2382	ev_unloop (EV_P_ int how)
2171	{	2383	{
…		…
2222	inline_size void	2434	inline_size void
2223	wlist_del (WL *head, WL elem)	2435	wlist_del (WL *head, WL elem)
2224	{	2436	{
2225	while (*head)	2437	while (*head)
2226	{	2438	{
2227	if (*head == elem)	2439	if (expect_true (*head == elem))
2228	{	2440	{
2229	*head = elem->next;	2441	*head = elem->next;
2230	return;	2442	break;
2231	}	2443	}
2232		2444
2233	head = &(*head)->next;	2445	head = &(*head)->next;
2234	}	2446	}
2235	}	2447	}
…		…
2303		2515
2304	ev_start (EV_A_ (W)w, 1);	2516	ev_start (EV_A_ (W)w, 1);
2305	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2517	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2306	wlist_add (&anfds[fd].head, (WL)w);	2518	wlist_add (&anfds[fd].head, (WL)w);
2307		2519
2308	fd_change (EV_A_ fd, w->events & EV__IOFDSET \| 1);	2520	fd_change (EV_A_ fd, w->events & EV__IOFDSET \| EV_ANFD_REIFY);
2309	w->events &= ~EV__IOFDSET;	2521	w->events &= ~EV__IOFDSET;
2310		2522
2311	EV_FREQUENT_CHECK;	2523	EV_FREQUENT_CHECK;
2312	}	2524	}
2313		2525
…		…
2407	}	2619	}
2408		2620
2409	EV_FREQUENT_CHECK;	2621	EV_FREQUENT_CHECK;
2410	}	2622	}
2411		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
2412	#if EV_PERIODIC_ENABLE	2630	#if EV_PERIODIC_ENABLE
2413	void noinline	2631	void noinline
2414	ev_periodic_start (EV_P_ ev_periodic *w)	2632	ev_periodic_start (EV_P_ ev_periodic *w)
2415	{	2633	{
2416	if (expect_false (ev_is_active (w)))	2634	if (expect_false (ev_is_active (w)))
…		…
2483	#endif	2701	#endif
2484		2702
2485	void noinline	2703	void noinline
2486	ev_signal_start (EV_P_ ev_signal *w)	2704	ev_signal_start (EV_P_ ev_signal *w)
2487	{	2705	{
2488	#if EV_MULTIPLICITY
2489	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2490	#endif
2491	if (expect_false (ev_is_active (w)))	2706	if (expect_false (ev_is_active (w)))
2492	return;	2707	return;
2493		2708
2494	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));
2495		2710
2496	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));
2497		2714
2498	EV_FREQUENT_CHECK;	2715	signals [w->signum - 1].loop = EV_A;
		2716	#endif
2499		2717
		2718	EV_FREQUENT_CHECK;
		2719
		2720	#if EV_USE_SIGNALFD
		2721	if (sigfd == -2)
2500	{	2722	{
2501	#ifndef _WIN32	2723	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK \| SFD_CLOEXEC);
2502	sigset_t full, prev;	2724	if (sigfd < 0 && errno == EINVAL)
2503	sigfillset (&full);	2725	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2504	sigprocmask (SIG_SETMASK, &full, &prev);
2505	#endif
2506		2726
2507	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 */
2508		2730
2509	#ifndef _WIN32	2731	sigemptyset (&sigfd_set);
2510	sigprocmask (SIG_SETMASK, &prev, 0);	2732
2511	#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	}
2512	}	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
2513		2749
2514	ev_start (EV_A_ (W)w, 1);	2750	ev_start (EV_A_ (W)w, 1);
2515	wlist_add (&signals [w->signum - 1].head, (WL)w);	2751	wlist_add (&signals [w->signum - 1].head, (WL)w);
2516		2752
2517	if (!((WL)w)->next)	2753	if (!((WL)w)->next)
		2754	# if EV_USE_SIGNALFD
		2755	if (sigfd < 0) /TODO/
		2756	# endif
2518	{	2757	{
2519	#if _WIN32	2758	# ifdef _WIN32
		2759	evpipe_init (EV_A);
		2760
2520	signal (w->signum, ev_sighandler);	2761	signal (w->signum, ev_sighandler);
2521	#else	2762	# else
2522	struct sigaction sa;	2763	struct sigaction sa;
		2764
		2765	evpipe_init (EV_A);
		2766
2523	sa.sa_handler = ev_sighandler;	2767	sa.sa_handler = ev_sighandler;
2524	sigfillset (&sa.sa_mask);	2768	sigfillset (&sa.sa_mask);
2525	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 */
2526	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);
2527	#endif	2775	#endif
2528	}	2776	}
2529		2777
2530	EV_FREQUENT_CHECK;	2778	EV_FREQUENT_CHECK;
2531	}	2779	}
2532		2780
2533	void noinline	2781	void noinline
…		…
2541		2789
2542	wlist_del (&signals [w->signum - 1].head, (WL)w);	2790	wlist_del (&signals [w->signum - 1].head, (WL)w);
2543	ev_stop (EV_A_ (W)w);	2791	ev_stop (EV_A_ (W)w);
2544		2792
2545	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
2546	signal (w->signum, SIG_DFL);	2812	signal (w->signum, SIG_DFL);
		2813	}
2547		2814
2548	EV_FREQUENT_CHECK;	2815	EV_FREQUENT_CHECK;
2549	}	2816	}
2550		2817
2551	void	2818	void
…		…
2599	static void noinline	2866	static void noinline
2600	infy_add (EV_P_ ev_stat *w)	2867	infy_add (EV_P_ ev_stat *w)
2601	{	2868	{
2602	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB \| IN_DELETE_SELF \| IN_MOVE_SELF \| IN_MODIFY \| IN_DONT_FOLLOW \| IN_MASK_ADD);	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);
2603		2870
2604	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 */
2605	{	2891	}
		2892	else
		2893	{
		2894	/* can't use inotify, continue to stat */
2606	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;	2895	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2607	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2608		2896
2609	/* monitor some parent directory for speedup hints */	2897	/* if path is not there, monitor some parent directory for speedup hints */
2610	/* note that exceeding the hardcoded path limit is not a correctness issue, */	2898	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2611	/* but an efficiency issue only */	2899	/* but an efficiency issue only */
2612	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)	2900	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)
2613	{	2901	{
2614	char path [4096];	2902	char path [4096];
…		…
2630	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));	2918	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));
2631	}	2919	}
2632	}	2920	}
2633		2921
2634	if (w->wd >= 0)	2922	if (w->wd >= 0)
2635	{
2636	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);
2637		2924
2638	/* now local changes will be tracked by inotify, but remote changes won't */	2925	/* now re-arm timer, if required */
2639	/* unless the filesystem it known to be local, we therefore still poll */	2926	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2640	/* also do poll on <2.6.25, but with normal frequency */
2641	struct statfs sfs;
2642
2643	if (fs_2625 && !statfs (w->path, &sfs))
2644	if (sfs.f_type == 0x1373 /* devfs */
2645	\|\| sfs.f_type == 0xEF53 /* ext2/3 */
2646	\|\| sfs.f_type == 0x3153464a /* jfs */
2647	\|\| sfs.f_type == 0x52654973 /* reiser3 */
2648	\|\| sfs.f_type == 0x01021994 /* tempfs */
2649	\|\| sfs.f_type == 0x58465342 /* xfs */)
2650	return;
2651
2652	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2653	ev_timer_again (EV_A_ &w->timer);	2927	ev_timer_again (EV_A_ &w->timer);
2654	}	2928	if (ev_is_active (&w->timer)) ev_unref (EV_A);
2655	}	2929	}
2656		2930
2657	static void noinline	2931	static void noinline
2658	infy_del (EV_P_ ev_stat *w)	2932	infy_del (EV_P_ ev_stat *w)
2659	{	2933	{
…		…
2735	return;	3009	return;
2736		3010
2737	fs_2625 = 1;	3011	fs_2625 = 1;
2738	}	3012	}
2739		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
2740	inline_size void	3025	inline_size void
2741	infy_init (EV_P)	3026	infy_init (EV_P)
2742	{	3027	{
2743	if (fs_fd != -2)	3028	if (fs_fd != -2)
2744	return;	3029	return;
2745		3030
2746	fs_fd = -1;	3031	fs_fd = -1;
2747		3032
2748	check_2625 (EV_A);	3033	check_2625 (EV_A);
2749		3034
2750	fs_fd = inotify_init ();	3035	fs_fd = infy_newfd ();
2751		3036
2752	if (fs_fd >= 0)	3037	if (fs_fd >= 0)
2753	{	3038	{
		3039	fd_intern (fs_fd);
2754	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3040	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2755	ev_set_priority (&fs_w, EV_MAXPRI);	3041	ev_set_priority (&fs_w, EV_MAXPRI);
2756	ev_io_start (EV_A_ &fs_w);	3042	ev_io_start (EV_A_ &fs_w);
		3043	ev_unref (EV_A);
2757	}	3044	}
2758	}	3045	}
2759		3046
2760	inline_size void	3047	inline_size void
2761	infy_fork (EV_P)	3048	infy_fork (EV_P)
…		…
2763	int slot;	3050	int slot;
2764		3051
2765	if (fs_fd < 0)	3052	if (fs_fd < 0)
2766	return;	3053	return;
2767		3054
		3055	ev_ref (EV_A);
		3056	ev_io_stop (EV_A_ &fs_w);
2768	close (fs_fd);	3057	close (fs_fd);
2769	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	}
2770		3067
2771	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3068	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2772	{	3069	{
2773	WL w_ = fs_hash [slot].head;	3070	WL w_ = fs_hash [slot].head;
2774	fs_hash [slot].head = 0;	3071	fs_hash [slot].head = 0;
…		…
2781	w->wd = -1;	3078	w->wd = -1;
2782		3079
2783	if (fs_fd >= 0)	3080	if (fs_fd >= 0)
2784	infy_add (EV_A_ w); /* re-add, no matter what */	3081	infy_add (EV_A_ w); /* re-add, no matter what */
2785	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);
2786	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	}
2787	}	3089	}
2788	}	3090	}
2789	}	3091	}
2790		3092
2791	#endif	3093	#endif
…		…
2808	static void noinline	3110	static void noinline
2809	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	3111	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2810	{	3112	{
2811	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));	3113	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
2812		3114
2813	/* we copy this here each the time so that */	3115	ev_statdata prev = w->attr;
2814	/* prev has the old value when the callback gets invoked */
2815	w->prev = w->attr;
2816	ev_stat_stat (EV_A_ w);	3116	ev_stat_stat (EV_A_ w);
2817		3117
2818	/* 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 */
2819	if (	3119	if (
2820	w->prev.st_dev != w->attr.st_dev	3120	prev.st_dev != w->attr.st_dev
2821	\|\| w->prev.st_ino != w->attr.st_ino	3121	\|\| prev.st_ino != w->attr.st_ino
2822	\|\| w->prev.st_mode != w->attr.st_mode	3122	\|\| prev.st_mode != w->attr.st_mode
2823	\|\| w->prev.st_nlink != w->attr.st_nlink	3123	\|\| prev.st_nlink != w->attr.st_nlink
2824	\|\| w->prev.st_uid != w->attr.st_uid	3124	\|\| prev.st_uid != w->attr.st_uid
2825	\|\| w->prev.st_gid != w->attr.st_gid	3125	\|\| prev.st_gid != w->attr.st_gid
2826	\|\| w->prev.st_rdev != w->attr.st_rdev	3126	\|\| prev.st_rdev != w->attr.st_rdev
2827	\|\| w->prev.st_size != w->attr.st_size	3127	\|\| prev.st_size != w->attr.st_size
2828	\|\| w->prev.st_atime != w->attr.st_atime	3128	\|\| prev.st_atime != w->attr.st_atime
2829	\|\| w->prev.st_mtime != w->attr.st_mtime	3129	\|\| prev.st_mtime != w->attr.st_mtime
2830	\|\| w->prev.st_ctime != w->attr.st_ctime	3130	\|\| prev.st_ctime != w->attr.st_ctime
2831	) {	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
2832	#if EV_USE_INOTIFY	3137	#if EV_USE_INOTIFY
2833	if (fs_fd >= 0)	3138	if (fs_fd >= 0)
2834	{	3139	{
2835	infy_del (EV_A_ w);	3140	infy_del (EV_A_ w);
2836	infy_add (EV_A_ w);	3141	infy_add (EV_A_ w);
…		…
2861		3166
2862	if (fs_fd >= 0)	3167	if (fs_fd >= 0)
2863	infy_add (EV_A_ w);	3168	infy_add (EV_A_ w);
2864	else	3169	else
2865	#endif	3170	#endif
		3171	{
2866	ev_timer_again (EV_A_ &w->timer);	3172	ev_timer_again (EV_A_ &w->timer);
		3173	ev_unref (EV_A);
		3174	}
2867		3175
2868	ev_start (EV_A_ (W)w, 1);	3176	ev_start (EV_A_ (W)w, 1);
2869		3177
2870	EV_FREQUENT_CHECK;	3178	EV_FREQUENT_CHECK;
2871	}	3179	}
…		…
2880	EV_FREQUENT_CHECK;	3188	EV_FREQUENT_CHECK;
2881		3189
2882	#if EV_USE_INOTIFY	3190	#if EV_USE_INOTIFY
2883	infy_del (EV_A_ w);	3191	infy_del (EV_A_ w);
2884	#endif	3192	#endif
		3193
		3194	if (ev_is_active (&w->timer))
		3195	{
		3196	ev_ref (EV_A);
2885	ev_timer_stop (EV_A_ &w->timer);	3197	ev_timer_stop (EV_A_ &w->timer);
		3198	}
2886		3199
2887	ev_stop (EV_A_ (W)w);	3200	ev_stop (EV_A_ (W)w);
2888		3201
2889	EV_FREQUENT_CHECK;	3202	EV_FREQUENT_CHECK;
2890	}	3203	}
…		…
3031	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3344	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3032	{	3345	{
3033	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));	3346	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
3034		3347
3035	{	3348	{
3036	struct ev_loop *loop = w->other;	3349	EV_P = w->other;
3037		3350
3038	while (fdchangecnt)	3351	while (fdchangecnt)
3039	{	3352	{
3040	fd_reify (EV_A);	3353	fd_reify (EV_A);
3041	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3354	ev_loop (EV_A_ EVLOOP_NONBLOCK);
…		…
3049	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));
3050		3363
3051	ev_embed_stop (EV_A_ w);	3364	ev_embed_stop (EV_A_ w);
3052		3365
3053	{	3366	{
3054	struct ev_loop *loop = w->other;	3367	EV_P = w->other;
3055		3368
3056	ev_loop_fork (EV_A);	3369	ev_loop_fork (EV_A);
3057	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3370	ev_loop (EV_A_ EVLOOP_NONBLOCK);
3058	}	3371	}
3059		3372
…		…
3073	{	3386	{
3074	if (expect_false (ev_is_active (w)))	3387	if (expect_false (ev_is_active (w)))
3075	return;	3388	return;
3076		3389
3077	{	3390	{
3078	struct ev_loop *loop = w->other;	3391	EV_P = w->other;
3079	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 ()));
3080	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);
3081	}	3394	}
3082		3395
3083	EV_FREQUENT_CHECK;	3396	EV_FREQUENT_CHECK;
…		…
3195		3508
3196	void	3509	void
3197	ev_async_send (EV_P_ ev_async *w)	3510	ev_async_send (EV_P_ ev_async *w)
3198	{	3511	{
3199	w->sent = 1;	3512	w->sent = 1;
3200	evpipe_write (EV_A_ &gotasync);	3513	evpipe_write (EV_A_ &async_pending);
3201	}	3514	}
3202	#endif	3515	#endif
3203		3516
3204	/*****************************************************************************/	3517	/*****************************************************************************/
3205		3518
…		…
3354	if (types & EV_CHECK)	3667	if (types & EV_CHECK)
3355	for (i = checkcnt; i--; )	3668	for (i = checkcnt; i--; )
3356	cb (EV_A_ EV_CHECK, checks [i]);	3669	cb (EV_A_ EV_CHECK, checks [i]);
3357		3670
3358	if (types & EV_SIGNAL)	3671	if (types & EV_SIGNAL)
3359	for (i = 0; i < signalmax; ++i)	3672	for (i = 0; i < EV_NSIG - 1; ++i)
3360	for (wl = signals [i].head; wl; )	3673	for (wl = signals [i].head; wl; )
3361	{	3674	{
3362	wn = wl->next;	3675	wn = wl->next;
3363	cb (EV_A_ EV_SIGNAL, wl);	3676	cb (EV_A_ EV_SIGNAL, wl);
3364	wl = wn;	3677	wl = wn;

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Comparing libev/ev.c (file contents): Revision 1.295 by root, Wed Jul 8 04:29:31 2009 UTC vs. Revision 1.325 by root, Sun Jan 24 12:31:55 2010 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.295 by root, Wed Jul 8 04:29:31 2009 UTC vs.
Revision 1.325 by root, Sun Jan 24 12:31:55 2010 UTC