[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 1.322 by root, Thu Jan 7 06:49:31 2010 UTC

…		…
133	# else	133	# else
134	# define EV_USE_INOTIFY 0	134	# define EV_USE_INOTIFY 0
135	# endif	135	# endif
136	# endif	136	# endif
137		137
		138	# ifndef EV_USE_SIGNALFD
		139	# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
		140	# define EV_USE_SIGNALFD 1
		141	# else
		142	# define EV_USE_SIGNALFD 0
		143	# endif
		144	# endif
		145
138	# ifndef EV_USE_EVENTFD	146	# ifndef EV_USE_EVENTFD
139	# if HAVE_EVENTFD	147	# if HAVE_EVENTFD
140	# define EV_USE_EVENTFD 1	148	# define EV_USE_EVENTFD 1
141	# else	149	# else
142	# define EV_USE_EVENTFD 0	150	# define EV_USE_EVENTFD 0
…		…
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
…		…
339	#endif	383	#endif
340		384
341	#if EV_USE_EVENTFD	385	#if EV_USE_EVENTFD
342	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	386	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
343	# include <stdint.h>	387	# include <stdint.h>
		388	# ifndef EFD_NONBLOCK
		389	# define EFD_NONBLOCK O_NONBLOCK
		390	# endif
		391	# ifndef EFD_CLOEXEC
		392	# ifdef O_CLOEXEC
		393	# define EFD_CLOEXEC O_CLOEXEC
		394	# else
		395	# define EFD_CLOEXEC 02000000
		396	# endif
		397	# endif
344	# ifdef __cplusplus	398	# ifdef __cplusplus
345	extern "C" {	399	extern "C" {
346	# endif	400	# endif
347	int eventfd (unsigned int initval, int flags);	401	int eventfd (unsigned int initval, int flags);
348	# ifdef __cplusplus	402	# ifdef __cplusplus
349	}	403	}
350	# endif	404	# endif
351	#endif	405	#endif
		406
		407	#if EV_USE_SIGNALFD
		408	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		409	# include <stdint.h>
		410	# ifndef SFD_NONBLOCK
		411	# define SFD_NONBLOCK O_NONBLOCK
		412	# endif
		413	# ifndef SFD_CLOEXEC
		414	# ifdef O_CLOEXEC
		415	# define SFD_CLOEXEC O_CLOEXEC
		416	# else
		417	# define SFD_CLOEXEC 02000000
		418	# endif
		419	# endif
		420	# ifdef __cplusplus
		421	extern "C" {
		422	# endif
		423	int signalfd (int fd, const sigset_t *mask, int flags);
		424
		425	struct signalfd_siginfo
		426	{
		427	uint32_t ssi_signo;
		428	char pad[128 - sizeof (uint32_t)];
		429	};
		430	# ifdef __cplusplus
		431	}
		432	# endif
		433	#endif
		434
352		435
353	/**/	436	/**/
354		437
355	#if EV_VERIFY >= 3	438	#if EV_VERIFY >= 3
356	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)	439	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
…		…
368	*/	451	*/
369	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	452	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
370		453
371	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	454	#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) */	455	#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		456
375	#if __GNUC__ >= 4	457	#if __GNUC__ >= 4
376	# define expect(expr,value) __builtin_expect ((expr),(value))	458	# define expect(expr,value) __builtin_expect ((expr),(value))
377	# define noinline __attribute__ ((noinline))	459	# define noinline __attribute__ ((noinline))
378	#else	460	#else
…		…
419		501
420	#if EV_USE_MONOTONIC	502	#if EV_USE_MONOTONIC
421	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	503	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
422	#endif	504	#endif
423		505
		506	#ifndef EV_FD_TO_WIN32_HANDLE
		507	# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		508	#endif
		509	#ifndef EV_WIN32_HANDLE_TO_FD
		510	# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
		511	#endif
		512	#ifndef EV_WIN32_CLOSE_FD
		513	# define EV_WIN32_CLOSE_FD(fd) close (fd)
		514	#endif
		515
424	#ifdef _WIN32	516	#ifdef _WIN32
425	# include "ev_win32.c"	517	# include "ev_win32.c"
426	#endif	518	#endif
427		519
428	/*****************************************************************************/	520	/*****************************************************************************/
…		…
490	#define ev_malloc(size) ev_realloc (0, (size))	582	#define ev_malloc(size) ev_realloc (0, (size))
491	#define ev_free(ptr) ev_realloc ((ptr), 0)	583	#define ev_free(ptr) ev_realloc ((ptr), 0)
492		584
493	/*****************************************************************************/	585	/*****************************************************************************/
494		586
		587	/* set in reify when reification needed */
		588	#define EV_ANFD_REIFY 1
		589
495	/* file descriptor info structure */	590	/* file descriptor info structure */
496	typedef struct	591	typedef struct
497	{	592	{
498	WL head;	593	WL head;
499	unsigned char events; /* the events watched for */	594	unsigned char events; /* the events watched for */
500	unsigned char reify; /* flag set when this ANFD needs reification */	595	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 */	596	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
502	unsigned char unused;	597	unsigned char unused;
503	#if EV_USE_EPOLL	598	#if EV_USE_EPOLL
504	unsigned int egen; /* generation counter to counter epoll bugs */	599	unsigned int egen; /* generation counter to counter epoll bugs */
505	#endif	600	#endif
…		…
568	static int ev_default_loop_ptr;	663	static int ev_default_loop_ptr;
569		664
570	#endif	665	#endif
571		666
572	#if EV_MINIMAL < 2	667	#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)	668	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		669	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
575	# define EV_INVOKE_PENDING invoke_cb (EV_A)	670	# define EV_INVOKE_PENDING invoke_cb (EV_A)
576	#else	671	#else
577	# define EV_SUSPEND_CB (void)0
578	# define EV_RESUME_CB (void)0	672	# define EV_RELEASE_CB (void)0
		673	# define EV_ACQUIRE_CB (void)0
579	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)	674	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
580	#endif	675	#endif
		676
		677	#define EVUNLOOP_RECURSE 0x80
581		678
582	/*****************************************************************************/	679	/*****************************************************************************/
583		680
584	#ifndef EV_HAVE_EV_TIME	681	#ifndef EV_HAVE_EV_TIME
585	ev_tstamp	682	ev_tstamp
…		…
642		739
643	tv.tv_sec = (time_t)delay;	740	tv.tv_sec = (time_t)delay;
644	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	741	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
645		742
646	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */	743	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
647	/* somehting not guaranteed by newer posix versions, but guaranteed */	744	/* something not guaranteed by newer posix versions, but guaranteed */
648	/* by older ones */	745	/* by older ones */
649	select (0, 0, 0, 0, &tv);	746	select (0, 0, 0, 0, &tv);
650	#endif	747	#endif
651	}	748	}
652	}	749	}
…		…
760	}	857	}
761		858
762	/*****************************************************************************/	859	/*****************************************************************************/
763		860
764	inline_speed void	861	inline_speed void
765	fd_event (EV_P_ int fd, int revents)	862	fd_event_nc (EV_P_ int fd, int revents)
766	{	863	{
767	ANFD *anfd = anfds + fd;	864	ANFD *anfd = anfds + fd;
768	ev_io *w;	865	ev_io *w;
769		866
770	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)	867	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
…		…
774	if (ev)	871	if (ev)
775	ev_feed_event (EV_A_ (W)w, ev);	872	ev_feed_event (EV_A_ (W)w, ev);
776	}	873	}
777	}	874	}
778		875
		876	/* do not submit kernel events for fds that have reify set */
		877	/* because that means they changed while we were polling for new events */
		878	inline_speed void
		879	fd_event (EV_P_ int fd, int revents)
		880	{
		881	ANFD *anfd = anfds + fd;
		882
		883	if (expect_true (!anfd->reify))
		884	fd_event_nc (EV_A_ fd, revents);
		885	}
		886
779	void	887	void
780	ev_feed_fd_event (EV_P_ int fd, int revents)	888	ev_feed_fd_event (EV_P_ int fd, int revents)
781	{	889	{
782	if (fd >= 0 && fd < anfdmax)	890	if (fd >= 0 && fd < anfdmax)
783	fd_event (EV_A_ fd, revents);	891	fd_event_nc (EV_A_ fd, revents);
784	}	892	}
785		893
786	/* make sure the external fd watch events are in-sync */	894	/* make sure the external fd watch events are in-sync */
787	/* with the kernel/libev internal state */	895	/* with the kernel/libev internal state */
788	inline_size void	896	inline_size void
…		…
803		911
804	#if EV_SELECT_IS_WINSOCKET	912	#if EV_SELECT_IS_WINSOCKET
805	if (events)	913	if (events)
806	{	914	{
807	unsigned long arg;	915	unsigned long arg;
808	#ifdef EV_FD_TO_WIN32_HANDLE
809	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	916	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));	917	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
814	}	918	}
815	#endif	919	#endif
816		920
817	{	921	{
…		…
860	/* check whether the given fd is atcually valid, for error recovery */	964	/* check whether the given fd is atcually valid, for error recovery */
861	inline_size int	965	inline_size int
862	fd_valid (int fd)	966	fd_valid (int fd)
863	{	967	{
864	#ifdef _WIN32	968	#ifdef _WIN32
865	return _get_osfhandle (fd) != -1;	969	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
866	#else	970	#else
867	return fcntl (fd, F_GETFD) != -1;	971	return fcntl (fd, F_GETFD) != -1;
868	#endif	972	#endif
869	}	973	}
870		974
…		…
888		992
889	for (fd = anfdmax; fd--; )	993	for (fd = anfdmax; fd--; )
890	if (anfds [fd].events)	994	if (anfds [fd].events)
891	{	995	{
892	fd_kill (EV_A_ fd);	996	fd_kill (EV_A_ fd);
893	return;	997	break;
894	}	998	}
895	}	999	}
896		1000
897	/* usually called after fork if backend needs to re-arm all fds from scratch */	1001	/* usually called after fork if backend needs to re-arm all fds from scratch */
898	static void noinline	1002	static void noinline
…		…
903	for (fd = 0; fd < anfdmax; ++fd)	1007	for (fd = 0; fd < anfdmax; ++fd)
904	if (anfds [fd].events)	1008	if (anfds [fd].events)
905	{	1009	{
906	anfds [fd].events = 0;	1010	anfds [fd].events = 0;
907	anfds [fd].emask = 0;	1011	anfds [fd].emask = 0;
908	fd_change (EV_A_ fd, EV__IOFDSET \| 1);	1012	fd_change (EV_A_ fd, EV__IOFDSET \| EV_ANFD_REIFY);
909	}	1013	}
910	}	1014	}
911		1015
912	/*****************************************************************************/	1016	/*****************************************************************************/
913		1017
…		…
988		1092
989	for (;;)	1093	for (;;)
990	{	1094	{
991	int c = k << 1;	1095	int c = k << 1;
992		1096
993	if (c > N + HEAP0 - 1)	1097	if (c >= N + HEAP0)
994	break;	1098	break;
995		1099
996	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])	1100	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
997	? 1 : 0;	1101	? 1 : 0;
998		1102
…		…
1034		1138
1035	/* move an element suitably so it is in a correct place */	1139	/* move an element suitably so it is in a correct place */
1036	inline_size void	1140	inline_size void
1037	adjustheap (ANHE *heap, int N, int k)	1141	adjustheap (ANHE *heap, int N, int k)
1038	{	1142	{
1039	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1143	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1040	upheap (heap, k);	1144	upheap (heap, k);
1041	else	1145	else
1042	downheap (heap, N, k);	1146	downheap (heap, N, k);
1043	}	1147	}
1044		1148
…		…
1057	/*****************************************************************************/	1161	/*****************************************************************************/
1058		1162
1059	/* associate signal watchers to a signal signal */	1163	/* associate signal watchers to a signal signal */
1060	typedef struct	1164	typedef struct
1061	{	1165	{
		1166	EV_ATOMIC_T pending;
		1167	#if EV_MULTIPLICITY
		1168	EV_P;
		1169	#endif
1062	WL head;	1170	WL head;
1063	EV_ATOMIC_T gotsig;
1064	} ANSIG;	1171	} ANSIG;
1065		1172
1066	static ANSIG *signals;	1173	static ANSIG signals [EV_NSIG - 1];
1067	static int signalmax;
1068
1069	static EV_ATOMIC_T gotsig;
1070		1174
1071	/*****************************************************************************/	1175	/*****************************************************************************/
1072		1176
1073	/* used to prepare libev internal fd's */	1177	/* used to prepare libev internal fd's */
1074	/* this is not fork-safe */	1178	/* this is not fork-safe */
1075	inline_speed void	1179	inline_speed void
1076	fd_intern (int fd)	1180	fd_intern (int fd)
1077	{	1181	{
1078	#ifdef _WIN32	1182	#ifdef _WIN32
1079	unsigned long arg = 1;	1183	unsigned long arg = 1;
1080	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1184	ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1081	#else	1185	#else
1082	fcntl (fd, F_SETFD, FD_CLOEXEC);	1186	fcntl (fd, F_SETFD, FD_CLOEXEC);
1083	fcntl (fd, F_SETFL, O_NONBLOCK);	1187	fcntl (fd, F_SETFL, O_NONBLOCK);
1084	#endif	1188	#endif
1085	}	1189	}
…		…
1088	evpipe_init (EV_P)	1192	evpipe_init (EV_P)
1089	{	1193	{
1090	if (!ev_is_active (&pipe_w))	1194	if (!ev_is_active (&pipe_w))
1091	{	1195	{
1092	#if EV_USE_EVENTFD	1196	#if EV_USE_EVENTFD
		1197	evfd = eventfd (0, EFD_NONBLOCK \| EFD_CLOEXEC);
		1198	if (evfd < 0 && errno == EINVAL)
1093	if ((evfd = eventfd (0, 0)) >= 0)	1199	evfd = eventfd (0, 0);
		1200
		1201	if (evfd >= 0)
1094	{	1202	{
1095	evpipe [0] = -1;	1203	evpipe [0] = -1;
1096	fd_intern (evfd);	1204	fd_intern (evfd); /* doing it twice doesn't hurt */
1097	ev_io_set (&pipe_w, evfd, EV_READ);	1205	ev_io_set (&pipe_w, evfd, EV_READ);
1098	}	1206	}
1099	else	1207	else
1100	#endif	1208	#endif
1101	{	1209	{
…		…
1138	/* called whenever the libev signal pipe */	1246	/* called whenever the libev signal pipe */
1139	/* got some events (signal, async) */	1247	/* got some events (signal, async) */
1140	static void	1248	static void
1141	pipecb (EV_P_ ev_io *iow, int revents)	1249	pipecb (EV_P_ ev_io *iow, int revents)
1142	{	1250	{
		1251	int i;
		1252
1143	#if EV_USE_EVENTFD	1253	#if EV_USE_EVENTFD
1144	if (evfd >= 0)	1254	if (evfd >= 0)
1145	{	1255	{
1146	uint64_t counter;	1256	uint64_t counter;
1147	read (evfd, &counter, sizeof (uint64_t));	1257	read (evfd, &counter, sizeof (uint64_t));
…		…
1151	{	1261	{
1152	char dummy;	1262	char dummy;
1153	read (evpipe [0], &dummy, 1);	1263	read (evpipe [0], &dummy, 1);
1154	}	1264	}
1155		1265
1156	if (gotsig && ev_is_default_loop (EV_A))	1266	if (sig_pending)
1157	{	1267	{
1158	int signum;	1268	sig_pending = 0;
1159	gotsig = 0;
1160		1269
1161	for (signum = signalmax; signum--; )	1270	for (i = EV_NSIG - 1; i--; )
1162	if (signals [signum].gotsig)	1271	if (expect_false (signals [i].pending))
1163	ev_feed_signal_event (EV_A_ signum + 1);	1272	ev_feed_signal_event (EV_A_ i + 1);
1164	}	1273	}
1165		1274
1166	#if EV_ASYNC_ENABLE	1275	#if EV_ASYNC_ENABLE
1167	if (gotasync)	1276	if (async_pending)
1168	{	1277	{
1169	int i;	1278	async_pending = 0;
1170	gotasync = 0;
1171		1279
1172	for (i = asynccnt; i--; )	1280	for (i = asynccnt; i--; )
1173	if (asyncs [i]->sent)	1281	if (asyncs [i]->sent)
1174	{	1282	{
1175	asyncs [i]->sent = 0;	1283	asyncs [i]->sent = 0;
…		…
1183		1291
1184	static void	1292	static void
1185	ev_sighandler (int signum)	1293	ev_sighandler (int signum)
1186	{	1294	{
1187	#if EV_MULTIPLICITY	1295	#if EV_MULTIPLICITY
1188	struct ev_loop *loop = &default_loop_struct;	1296	EV_P = signals [signum - 1].loop;
1189	#endif	1297	#endif
1190		1298
1191	#if _WIN32	1299	#ifdef _WIN32
1192	signal (signum, ev_sighandler);	1300	signal (signum, ev_sighandler);
1193	#endif	1301	#endif
1194		1302
1195	signals [signum - 1].gotsig = 1;	1303	signals [signum - 1].pending = 1;
1196	evpipe_write (EV_A_ &gotsig);	1304	evpipe_write (EV_A_ &sig_pending);
1197	}	1305	}
1198		1306
1199	void noinline	1307	void noinline
1200	ev_feed_signal_event (EV_P_ int signum)	1308	ev_feed_signal_event (EV_P_ int signum)
1201	{	1309	{
1202	WL w;	1310	WL w;
1203		1311
		1312	if (expect_false (signum <= 0 \|\| signum > EV_NSIG))
		1313	return;
		1314
		1315	--signum;
		1316
1204	#if EV_MULTIPLICITY	1317	#if EV_MULTIPLICITY
1205	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1318	/* it is permissible to try to feed a signal to the wrong loop */
1206	#endif	1319	/* or, likely more useful, feeding a signal nobody is waiting for */
1207		1320
1208	--signum;	1321	if (expect_false (signals [signum].loop != EV_A))
1209
1210	if (signum < 0 \|\| signum >= signalmax)
1211	return;	1322	return;
		1323	#endif
1212		1324
1213	signals [signum].gotsig = 0;	1325	signals [signum].pending = 0;
1214		1326
1215	for (w = signals [signum].head; w; w = w->next)	1327	for (w = signals [signum].head; w; w = w->next)
1216	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1328	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1217	}	1329	}
		1330
		1331	#if EV_USE_SIGNALFD
		1332	static void
		1333	sigfdcb (EV_P_ ev_io *iow, int revents)
		1334	{
		1335	struct signalfd_siginfo si[2], sip; / these structs are big */
		1336
		1337	for (;;)
		1338	{
		1339	ssize_t res = read (sigfd, si, sizeof (si));
		1340
		1341	/* not ISO-C, as res might be -1, but works with SuS */
		1342	for (sip = si; (char )sip < (char )si + res; ++sip)
		1343	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1344
		1345	if (res < (ssize_t)sizeof (si))
		1346	break;
		1347	}
		1348	}
		1349	#endif
1218		1350
1219	/*****************************************************************************/	1351	/*****************************************************************************/
1220		1352
1221	static WL childs [EV_PID_HASHSIZE];	1353	static WL childs [EV_PID_HASHSIZE];
1222		1354
…		…
1409	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))	1541	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1410	{	1542	{
1411	invoke_cb = invoke_pending_cb;	1543	invoke_cb = invoke_pending_cb;
1412	}	1544	}
1413		1545
1414	void ev_set_blocking_cb (EV_P_ void (suspend_cb_)(EV_P), void (resume_cb_)(EV_P))	1546	void ev_set_loop_release_cb (EV_P_ void (release)(EV_P), void (acquire)(EV_P))
1415	{	1547	{
1416	suspend_cb = suspend_cb_;	1548	release_cb = release;
1417	resume_cb = resume_cb_;	1549	acquire_cb = acquire;
1418	}	1550	}
1419	#endif	1551	#endif
1420		1552
1421	/* initialise a loop structure, must be zero-initialised */	1553	/* initialise a loop structure, must be zero-initialised */
1422	static void noinline	1554	static void noinline
…		…
1441		1573
1442	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1574	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1443	have_monotonic = 1;	1575	have_monotonic = 1;
1444	}	1576	}
1445	#endif	1577	#endif
		1578
		1579	/* pid check not overridable via env */
		1580	#ifndef _WIN32
		1581	if (flags & EVFLAG_FORKCHECK)
		1582	curpid = getpid ();
		1583	#endif
		1584
		1585	if (!(flags & EVFLAG_NOENV)
		1586	&& !enable_secure ()
		1587	&& getenv ("LIBEV_FLAGS"))
		1588	flags = atoi (getenv ("LIBEV_FLAGS"));
1446		1589
1447	ev_rt_now = ev_time ();	1590	ev_rt_now = ev_time ();
1448	mn_now = get_clock ();	1591	mn_now = get_clock ();
1449	now_floor = mn_now;	1592	now_floor = mn_now;
1450	rtmn_diff = ev_rt_now - mn_now;	1593	rtmn_diff = ev_rt_now - mn_now;
…		…
1454		1597
1455	io_blocktime = 0.;	1598	io_blocktime = 0.;
1456	timeout_blocktime = 0.;	1599	timeout_blocktime = 0.;
1457	backend = 0;	1600	backend = 0;
1458	backend_fd = -1;	1601	backend_fd = -1;
1459	gotasync = 0;	1602	sig_pending = 0;
		1603	#if EV_ASYNC_ENABLE
		1604	async_pending = 0;
		1605	#endif
1460	#if EV_USE_INOTIFY	1606	#if EV_USE_INOTIFY
1461	fs_fd = -2;	1607	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1462	#endif	1608	#endif
1463		1609	#if EV_USE_SIGNALFD
1464	/* pid check not overridable via env */	1610	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1465	#ifndef _WIN32
1466	if (flags & EVFLAG_FORKCHECK)
1467	curpid = getpid ();
1468	#endif	1611	#endif
1469
1470	if (!(flags & EVFLAG_NOENV)
1471	&& !enable_secure ()
1472	&& getenv ("LIBEV_FLAGS"))
1473	flags = atoi (getenv ("LIBEV_FLAGS"));
1474		1612
1475	if (!(flags & 0x0000ffffU))	1613	if (!(flags & 0x0000ffffU))
1476	flags \|= ev_recommended_backends ();	1614	flags \|= ev_recommended_backends ();
1477		1615
1478	#if EV_USE_PORT	1616	#if EV_USE_PORT
…		…
1504	{	1642	{
1505	int i;	1643	int i;
1506		1644
1507	if (ev_is_active (&pipe_w))	1645	if (ev_is_active (&pipe_w))
1508	{	1646	{
1509	ev_ref (EV_A); /* signal watcher */	1647	/ev_ref (EV_A);/
1510	ev_io_stop (EV_A_ &pipe_w);	1648	/ev_io_stop (EV_A_ &pipe_w);/
1511		1649
1512	#if EV_USE_EVENTFD	1650	#if EV_USE_EVENTFD
1513	if (evfd >= 0)	1651	if (evfd >= 0)
1514	close (evfd);	1652	close (evfd);
1515	#endif	1653	#endif
1516		1654
1517	if (evpipe [0] >= 0)	1655	if (evpipe [0] >= 0)
1518	{	1656	{
1519	close (evpipe [0]);	1657	EV_WIN32_CLOSE_FD (evpipe [0]);
1520	close (evpipe [1]);	1658	EV_WIN32_CLOSE_FD (evpipe [1]);
1521	}	1659	}
1522	}	1660	}
		1661
		1662	#if EV_USE_SIGNALFD
		1663	if (ev_is_active (&sigfd_w))
		1664	close (sigfd);
		1665	#endif
1523		1666
1524	#if EV_USE_INOTIFY	1667	#if EV_USE_INOTIFY
1525	if (fs_fd >= 0)	1668	if (fs_fd >= 0)
1526	close (fs_fd);	1669	close (fs_fd);
1527	#endif	1670	#endif
…		…
1551	#if EV_IDLE_ENABLE	1694	#if EV_IDLE_ENABLE
1552	array_free (idle, [i]);	1695	array_free (idle, [i]);
1553	#endif	1696	#endif
1554	}	1697	}
1555		1698
1556	ev_free (anfds); anfdmax = 0;	1699	ev_free (anfds); anfds = 0; anfdmax = 0;
1557		1700
1558	/* have to use the microsoft-never-gets-it-right macro */	1701	/* have to use the microsoft-never-gets-it-right macro */
1559	array_free (rfeed, EMPTY);	1702	array_free (rfeed, EMPTY);
1560	array_free (fdchange, EMPTY);	1703	array_free (fdchange, EMPTY);
1561	array_free (timer, EMPTY);	1704	array_free (timer, EMPTY);
…		…
1596		1739
1597	if (ev_is_active (&pipe_w))	1740	if (ev_is_active (&pipe_w))
1598	{	1741	{
1599	/* this "locks" the handlers against writing to the pipe */	1742	/* this "locks" the handlers against writing to the pipe */
1600	/* while we modify the fd vars */	1743	/* while we modify the fd vars */
1601	gotsig = 1;	1744	sig_pending = 1;
1602	#if EV_ASYNC_ENABLE	1745	#if EV_ASYNC_ENABLE
1603	gotasync = 1;	1746	async_pending = 1;
1604	#endif	1747	#endif
1605		1748
1606	ev_ref (EV_A);	1749	ev_ref (EV_A);
1607	ev_io_stop (EV_A_ &pipe_w);	1750	ev_io_stop (EV_A_ &pipe_w);
1608		1751
…		…
1611	close (evfd);	1754	close (evfd);
1612	#endif	1755	#endif
1613		1756
1614	if (evpipe [0] >= 0)	1757	if (evpipe [0] >= 0)
1615	{	1758	{
1616	close (evpipe [0]);	1759	EV_WIN32_CLOSE_FD (evpipe [0]);
1617	close (evpipe [1]);	1760	EV_WIN32_CLOSE_FD (evpipe [1]);
1618	}	1761	}
1619		1762
1620	evpipe_init (EV_A);	1763	evpipe_init (EV_A);
1621	/* now iterate over everything, in case we missed something */	1764	/* now iterate over everything, in case we missed something */
1622	pipecb (EV_A_ &pipe_w, EV_READ);	1765	pipecb (EV_A_ &pipe_w, EV_READ);
…		…
1628	#if EV_MULTIPLICITY	1771	#if EV_MULTIPLICITY
1629		1772
1630	struct ev_loop *	1773	struct ev_loop *
1631	ev_loop_new (unsigned int flags)	1774	ev_loop_new (unsigned int flags)
1632	{	1775	{
1633	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));	1776	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1634		1777
1635	memset (loop, 0, sizeof (struct ev_loop));	1778	memset (EV_A, 0, sizeof (struct ev_loop));
1636
1637	loop_init (EV_A_ flags);	1779	loop_init (EV_A_ flags);
1638		1780
1639	if (ev_backend (EV_A))	1781	if (ev_backend (EV_A))
1640	return loop;	1782	return EV_A;
1641		1783
1642	return 0;	1784	return 0;
1643	}	1785	}
1644		1786
1645	void	1787	void
…		…
1749	assert (checkmax >= checkcnt);	1891	assert (checkmax >= checkcnt);
1750	array_verify (EV_A_ (W *)checks, checkcnt);	1892	array_verify (EV_A_ (W *)checks, checkcnt);
1751		1893
1752	# if 0	1894	# if 0
1753	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	1895	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)	1896	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1755	# endif	1897	# endif
1756	#endif	1898	#endif
1757	}	1899	}
1758	#endif	1900	#endif
1759		1901
…		…
1766	#endif	1908	#endif
1767	{	1909	{
1768	if (!ev_default_loop_ptr)	1910	if (!ev_default_loop_ptr)
1769	{	1911	{
1770	#if EV_MULTIPLICITY	1912	#if EV_MULTIPLICITY
1771	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1913	EV_P = ev_default_loop_ptr = &default_loop_struct;
1772	#else	1914	#else
1773	ev_default_loop_ptr = 1;	1915	ev_default_loop_ptr = 1;
1774	#endif	1916	#endif
1775		1917
1776	loop_init (EV_A_ flags);	1918	loop_init (EV_A_ flags);
…		…
1793		1935
1794	void	1936	void
1795	ev_default_destroy (void)	1937	ev_default_destroy (void)
1796	{	1938	{
1797	#if EV_MULTIPLICITY	1939	#if EV_MULTIPLICITY
1798	struct ev_loop *loop = ev_default_loop_ptr;	1940	EV_P = ev_default_loop_ptr;
1799	#endif	1941	#endif
1800		1942
1801	ev_default_loop_ptr = 0;	1943	ev_default_loop_ptr = 0;
1802		1944
1803	#ifndef _WIN32	1945	#ifndef _WIN32
…		…
1810		1952
1811	void	1953	void
1812	ev_default_fork (void)	1954	ev_default_fork (void)
1813	{	1955	{
1814	#if EV_MULTIPLICITY	1956	#if EV_MULTIPLICITY
1815	struct ev_loop *loop = ev_default_loop_ptr;	1957	EV_P = ev_default_loop_ptr;
1816	#endif	1958	#endif
1817		1959
1818	postfork = 1; /* must be in line with ev_loop_fork */	1960	postfork = 1; /* must be in line with ev_loop_fork */
1819	}	1961	}
1820		1962
…		…
1822		1964
1823	void	1965	void
1824	ev_invoke (EV_P_ void *w, int revents)	1966	ev_invoke (EV_P_ void *w, int revents)
1825	{	1967	{
1826	EV_CB_INVOKE ((W)w, revents);	1968	EV_CB_INVOKE ((W)w, revents);
		1969	}
		1970
		1971	unsigned int
		1972	ev_pending_count (EV_P)
		1973	{
		1974	int pri;
		1975	unsigned int count = 0;
		1976
		1977	for (pri = NUMPRI; pri--; )
		1978	count += pendingcnt [pri];
		1979
		1980	return count;
1827	}	1981	}
1828		1982
1829	void noinline	1983	void noinline
1830	ev_invoke_pending (EV_P)	1984	ev_invoke_pending (EV_P)
1831	{	1985	{
…		…
2077	{	2231	{
2078	#if EV_MINIMAL < 2	2232	#if EV_MINIMAL < 2
2079	++loop_depth;	2233	++loop_depth;
2080	#endif	2234	#endif
2081		2235
		2236	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2237
2082	loop_done = EVUNLOOP_CANCEL;	2238	loop_done = EVUNLOOP_CANCEL;
2083		2239
2084	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */	2240	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2085		2241
2086	do	2242	do
…		…
2113	{	2269	{
2114	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2270	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2115	EV_INVOKE_PENDING;	2271	EV_INVOKE_PENDING;
2116	}	2272	}
2117		2273
		2274	if (expect_false (loop_done))
		2275	break;
		2276
2118	/* we might have forked, so reify kernel state if necessary */	2277	/* we might have forked, so reify kernel state if necessary */
2119	if (expect_false (postfork))	2278	if (expect_false (postfork))
2120	loop_fork (EV_A);	2279	loop_fork (EV_A);
2121		2280
2122	/* update fd-related kernel structures */	2281	/* update fd-related kernel structures */
…		…
2172	}	2331	}
2173		2332
2174	#if EV_MINIMAL < 2	2333	#if EV_MINIMAL < 2
2175	++loop_count;	2334	++loop_count;
2176	#endif	2335	#endif
		2336	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2177	backend_poll (EV_A_ waittime);	2337	backend_poll (EV_A_ waittime);
		2338	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2178		2339
2179	/* update ev_rt_now, do magic */	2340	/* update ev_rt_now, do magic */
2180	time_update (EV_A_ waittime + sleeptime);	2341	time_update (EV_A_ waittime + sleeptime);
2181	}	2342	}
2182		2343
…		…
2267	inline_size void	2428	inline_size void
2268	wlist_del (WL *head, WL elem)	2429	wlist_del (WL *head, WL elem)
2269	{	2430	{
2270	while (*head)	2431	while (*head)
2271	{	2432	{
2272	if (*head == elem)	2433	if (expect_true (*head == elem))
2273	{	2434	{
2274	*head = elem->next;	2435	*head = elem->next;
2275	return;	2436	break;
2276	}	2437	}
2277		2438
2278	head = &(*head)->next;	2439	head = &(*head)->next;
2279	}	2440	}
2280	}	2441	}
…		…
2348		2509
2349	ev_start (EV_A_ (W)w, 1);	2510	ev_start (EV_A_ (W)w, 1);
2350	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2511	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2351	wlist_add (&anfds[fd].head, (WL)w);	2512	wlist_add (&anfds[fd].head, (WL)w);
2352		2513
2353	fd_change (EV_A_ fd, w->events & EV__IOFDSET \| 1);	2514	fd_change (EV_A_ fd, w->events & EV__IOFDSET \| EV_ANFD_REIFY);
2354	w->events &= ~EV__IOFDSET;	2515	w->events &= ~EV__IOFDSET;
2355		2516
2356	EV_FREQUENT_CHECK;	2517	EV_FREQUENT_CHECK;
2357	}	2518	}
2358		2519
…		…
2452	}	2613	}
2453		2614
2454	EV_FREQUENT_CHECK;	2615	EV_FREQUENT_CHECK;
2455	}	2616	}
2456		2617
		2618	ev_tstamp
		2619	ev_timer_remaining (EV_P_ ev_timer *w)
		2620	{
		2621	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
		2622	}
		2623
2457	#if EV_PERIODIC_ENABLE	2624	#if EV_PERIODIC_ENABLE
2458	void noinline	2625	void noinline
2459	ev_periodic_start (EV_P_ ev_periodic *w)	2626	ev_periodic_start (EV_P_ ev_periodic *w)
2460	{	2627	{
2461	if (expect_false (ev_is_active (w)))	2628	if (expect_false (ev_is_active (w)))
…		…
2528	#endif	2695	#endif
2529		2696
2530	void noinline	2697	void noinline
2531	ev_signal_start (EV_P_ ev_signal *w)	2698	ev_signal_start (EV_P_ ev_signal *w)
2532	{	2699	{
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)))	2700	if (expect_false (ev_is_active (w)))
2537	return;	2701	return;
2538		2702
2539	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));	2703	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2540		2704
2541	evpipe_init (EV_A);	2705	#if EV_MULTIPLICITY
		2706	assert (("libev: a signal must not be attached to two different loops",
		2707	!signals [w->signum - 1].loop \|\| signals [w->signum - 1].loop == loop));
2542		2708
2543	EV_FREQUENT_CHECK;	2709	signals [w->signum - 1].loop = EV_A;
		2710	#endif
2544		2711
		2712	EV_FREQUENT_CHECK;
		2713
		2714	#if EV_USE_SIGNALFD
		2715	if (sigfd == -2)
2545	{	2716	{
2546	#ifndef _WIN32	2717	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK \| SFD_CLOEXEC);
2547	sigset_t full, prev;	2718	if (sigfd < 0 && errno == EINVAL)
2548	sigfillset (&full);	2719	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2549	sigprocmask (SIG_SETMASK, &full, &prev);
2550	#endif
2551		2720
2552	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);	2721	if (sigfd >= 0)
		2722	{
		2723	fd_intern (sigfd); /* doing it twice will not hurt */
2553		2724
2554	#ifndef _WIN32	2725	sigemptyset (&sigfd_set);
2555	sigprocmask (SIG_SETMASK, &prev, 0);	2726
2556	#endif	2727	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2728	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2729	ev_io_start (EV_A_ &sigfd_w);
		2730	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2731	}
2557	}	2732	}
		2733
		2734	if (sigfd >= 0)
		2735	{
		2736	/* TODO: check .head */
		2737	sigaddset (&sigfd_set, w->signum);
		2738	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2739
		2740	signalfd (sigfd, &sigfd_set, 0);
		2741	}
		2742	#endif
2558		2743
2559	ev_start (EV_A_ (W)w, 1);	2744	ev_start (EV_A_ (W)w, 1);
2560	wlist_add (&signals [w->signum - 1].head, (WL)w);	2745	wlist_add (&signals [w->signum - 1].head, (WL)w);
2561		2746
2562	if (!((WL)w)->next)	2747	if (!((WL)w)->next)
		2748	# if EV_USE_SIGNALFD
		2749	if (sigfd < 0) /TODO/
		2750	# endif
2563	{	2751	{
2564	#if _WIN32	2752	# ifdef _WIN32
		2753	evpipe_init (EV_A);
		2754
2565	signal (w->signum, ev_sighandler);	2755	signal (w->signum, ev_sighandler);
2566	#else	2756	# else
2567	struct sigaction sa;	2757	struct sigaction sa;
		2758
		2759	evpipe_init (EV_A);
		2760
2568	sa.sa_handler = ev_sighandler;	2761	sa.sa_handler = ev_sighandler;
2569	sigfillset (&sa.sa_mask);	2762	sigfillset (&sa.sa_mask);
2570	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2763	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2571	sigaction (w->signum, &sa, 0);	2764	sigaction (w->signum, &sa, 0);
		2765
		2766	sigemptyset (&sa.sa_mask);
		2767	sigaddset (&sa.sa_mask, w->signum);
		2768	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2572	#endif	2769	#endif
2573	}	2770	}
2574		2771
2575	EV_FREQUENT_CHECK;	2772	EV_FREQUENT_CHECK;
2576	}	2773	}
2577		2774
2578	void noinline	2775	void noinline
…		…
2586		2783
2587	wlist_del (&signals [w->signum - 1].head, (WL)w);	2784	wlist_del (&signals [w->signum - 1].head, (WL)w);
2588	ev_stop (EV_A_ (W)w);	2785	ev_stop (EV_A_ (W)w);
2589		2786
2590	if (!signals [w->signum - 1].head)	2787	if (!signals [w->signum - 1].head)
		2788	{
		2789	#if EV_MULTIPLICITY
		2790	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2791	#endif
		2792	#if EV_USE_SIGNALFD
		2793	if (sigfd >= 0)
		2794	{
		2795	sigset_t ss;
		2796
		2797	sigemptyset (&ss);
		2798	sigaddset (&ss, w->signum);
		2799	sigdelset (&sigfd_set, w->signum);
		2800
		2801	signalfd (sigfd, &sigfd_set, 0);
		2802	sigprocmask (SIG_UNBLOCK, &ss, 0);
		2803	}
		2804	else
		2805	#endif
2591	signal (w->signum, SIG_DFL);	2806	signal (w->signum, SIG_DFL);
		2807	}
2592		2808
2593	EV_FREQUENT_CHECK;	2809	EV_FREQUENT_CHECK;
2594	}	2810	}
2595		2811
2596	void	2812	void
…		…
2644	static void noinline	2860	static void noinline
2645	infy_add (EV_P_ ev_stat *w)	2861	infy_add (EV_P_ ev_stat *w)
2646	{	2862	{
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);	2863	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		2864
2649	if (w->wd < 0)	2865	if (w->wd >= 0)
		2866	{
		2867	struct statfs sfs;
		2868
		2869	/* now local changes will be tracked by inotify, but remote changes won't */
		2870	/* unless the filesystem is known to be local, we therefore still poll */
		2871	/* also do poll on <2.6.25, but with normal frequency */
		2872
		2873	if (!fs_2625)
		2874	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		2875	else if (!statfs (w->path, &sfs)
		2876	&& (sfs.f_type == 0x1373 /* devfs */
		2877	\|\| sfs.f_type == 0xEF53 /* ext2/3 */
		2878	\|\| sfs.f_type == 0x3153464a /* jfs */
		2879	\|\| sfs.f_type == 0x52654973 /* reiser3 */
		2880	\|\| sfs.f_type == 0x01021994 /* tempfs */
		2881	\|\| sfs.f_type == 0x58465342 /* xfs */))
		2882	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
		2883	else
		2884	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2650	{	2885	}
		2886	else
		2887	{
		2888	/* can't use inotify, continue to stat */
2651	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;	2889	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		2890
2654	/* monitor some parent directory for speedup hints */	2891	/* 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, */	2892	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2656	/* but an efficiency issue only */	2893	/* but an efficiency issue only */
2657	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)	2894	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)
2658	{	2895	{
2659	char path [4096];	2896	char path [4096];
…		…
2675	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));	2912	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));
2676	}	2913	}
2677	}	2914	}
2678		2915
2679	if (w->wd >= 0)	2916	if (w->wd >= 0)
2680	{
2681	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2917	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2682		2918
2683	/* now local changes will be tracked by inotify, but remote changes won't */	2919	/* now re-arm timer, if required */
2684	/* unless the filesystem it known to be local, we therefore still poll */	2920	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);	2921	ev_timer_again (EV_A_ &w->timer);
2699	}	2922	if (ev_is_active (&w->timer)) ev_unref (EV_A);
2700	}	2923	}
2701		2924
2702	static void noinline	2925	static void noinline
2703	infy_del (EV_P_ ev_stat *w)	2926	infy_del (EV_P_ ev_stat *w)
2704	{	2927	{
…		…
2780	return;	3003	return;
2781		3004
2782	fs_2625 = 1;	3005	fs_2625 = 1;
2783	}	3006	}
2784		3007
		3008	inline_size int
		3009	infy_newfd (void)
		3010	{
		3011	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3012	int fd = inotify_init1 (IN_CLOEXEC \| IN_NONBLOCK);
		3013	if (fd >= 0)
		3014	return fd;
		3015	#endif
		3016	return inotify_init ();
		3017	}
		3018
2785	inline_size void	3019	inline_size void
2786	infy_init (EV_P)	3020	infy_init (EV_P)
2787	{	3021	{
2788	if (fs_fd != -2)	3022	if (fs_fd != -2)
2789	return;	3023	return;
2790		3024
2791	fs_fd = -1;	3025	fs_fd = -1;
2792		3026
2793	check_2625 (EV_A);	3027	check_2625 (EV_A);
2794		3028
2795	fs_fd = inotify_init ();	3029	fs_fd = infy_newfd ();
2796		3030
2797	if (fs_fd >= 0)	3031	if (fs_fd >= 0)
2798	{	3032	{
		3033	fd_intern (fs_fd);
2799	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3034	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2800	ev_set_priority (&fs_w, EV_MAXPRI);	3035	ev_set_priority (&fs_w, EV_MAXPRI);
2801	ev_io_start (EV_A_ &fs_w);	3036	ev_io_start (EV_A_ &fs_w);
		3037	ev_unref (EV_A);
2802	}	3038	}
2803	}	3039	}
2804		3040
2805	inline_size void	3041	inline_size void
2806	infy_fork (EV_P)	3042	infy_fork (EV_P)
…		…
2808	int slot;	3044	int slot;
2809		3045
2810	if (fs_fd < 0)	3046	if (fs_fd < 0)
2811	return;	3047	return;
2812		3048
		3049	ev_ref (EV_A);
		3050	ev_io_stop (EV_A_ &fs_w);
2813	close (fs_fd);	3051	close (fs_fd);
2814	fs_fd = inotify_init ();	3052	fs_fd = infy_newfd ();
		3053
		3054	if (fs_fd >= 0)
		3055	{
		3056	fd_intern (fs_fd);
		3057	ev_io_set (&fs_w, fs_fd, EV_READ);
		3058	ev_io_start (EV_A_ &fs_w);
		3059	ev_unref (EV_A);
		3060	}
2815		3061
2816	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3062	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2817	{	3063	{
2818	WL w_ = fs_hash [slot].head;	3064	WL w_ = fs_hash [slot].head;
2819	fs_hash [slot].head = 0;	3065	fs_hash [slot].head = 0;
…		…
2826	w->wd = -1;	3072	w->wd = -1;
2827		3073
2828	if (fs_fd >= 0)	3074	if (fs_fd >= 0)
2829	infy_add (EV_A_ w); /* re-add, no matter what */	3075	infy_add (EV_A_ w); /* re-add, no matter what */
2830	else	3076	else
		3077	{
		3078	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3079	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2831	ev_timer_again (EV_A_ &w->timer);	3080	ev_timer_again (EV_A_ &w->timer);
		3081	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		3082	}
2832	}	3083	}
2833	}	3084	}
2834	}	3085	}
2835		3086
2836	#endif	3087	#endif
…		…
2853	static void noinline	3104	static void noinline
2854	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	3105	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2855	{	3106	{
2856	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));	3107	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
2857		3108
2858	/* we copy this here each the time so that */	3109	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);	3110	ev_stat_stat (EV_A_ w);
2862		3111
2863	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */	3112	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2864	if (	3113	if (
2865	w->prev.st_dev != w->attr.st_dev	3114	prev.st_dev != w->attr.st_dev
2866	\|\| w->prev.st_ino != w->attr.st_ino	3115	\|\| prev.st_ino != w->attr.st_ino
2867	\|\| w->prev.st_mode != w->attr.st_mode	3116	\|\| prev.st_mode != w->attr.st_mode
2868	\|\| w->prev.st_nlink != w->attr.st_nlink	3117	\|\| prev.st_nlink != w->attr.st_nlink
2869	\|\| w->prev.st_uid != w->attr.st_uid	3118	\|\| prev.st_uid != w->attr.st_uid
2870	\|\| w->prev.st_gid != w->attr.st_gid	3119	\|\| prev.st_gid != w->attr.st_gid
2871	\|\| w->prev.st_rdev != w->attr.st_rdev	3120	\|\| prev.st_rdev != w->attr.st_rdev
2872	\|\| w->prev.st_size != w->attr.st_size	3121	\|\| prev.st_size != w->attr.st_size
2873	\|\| w->prev.st_atime != w->attr.st_atime	3122	\|\| prev.st_atime != w->attr.st_atime
2874	\|\| w->prev.st_mtime != w->attr.st_mtime	3123	\|\| prev.st_mtime != w->attr.st_mtime
2875	\|\| w->prev.st_ctime != w->attr.st_ctime	3124	\|\| prev.st_ctime != w->attr.st_ctime
2876	) {	3125	) {
		3126	/* we only update w->prev on actual differences */
		3127	/* in case we test more often than invoke the callback, */
		3128	/* to ensure that prev is always different to attr */
		3129	w->prev = prev;
		3130
2877	#if EV_USE_INOTIFY	3131	#if EV_USE_INOTIFY
2878	if (fs_fd >= 0)	3132	if (fs_fd >= 0)
2879	{	3133	{
2880	infy_del (EV_A_ w);	3134	infy_del (EV_A_ w);
2881	infy_add (EV_A_ w);	3135	infy_add (EV_A_ w);
…		…
2906		3160
2907	if (fs_fd >= 0)	3161	if (fs_fd >= 0)
2908	infy_add (EV_A_ w);	3162	infy_add (EV_A_ w);
2909	else	3163	else
2910	#endif	3164	#endif
		3165	{
2911	ev_timer_again (EV_A_ &w->timer);	3166	ev_timer_again (EV_A_ &w->timer);
		3167	ev_unref (EV_A);
		3168	}
2912		3169
2913	ev_start (EV_A_ (W)w, 1);	3170	ev_start (EV_A_ (W)w, 1);
2914		3171
2915	EV_FREQUENT_CHECK;	3172	EV_FREQUENT_CHECK;
2916	}	3173	}
…		…
2925	EV_FREQUENT_CHECK;	3182	EV_FREQUENT_CHECK;
2926		3183
2927	#if EV_USE_INOTIFY	3184	#if EV_USE_INOTIFY
2928	infy_del (EV_A_ w);	3185	infy_del (EV_A_ w);
2929	#endif	3186	#endif
		3187
		3188	if (ev_is_active (&w->timer))
		3189	{
		3190	ev_ref (EV_A);
2930	ev_timer_stop (EV_A_ &w->timer);	3191	ev_timer_stop (EV_A_ &w->timer);
		3192	}
2931		3193
2932	ev_stop (EV_A_ (W)w);	3194	ev_stop (EV_A_ (W)w);
2933		3195
2934	EV_FREQUENT_CHECK;	3196	EV_FREQUENT_CHECK;
2935	}	3197	}
…		…
3076	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3338	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3077	{	3339	{
3078	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));	3340	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
3079		3341
3080	{	3342	{
3081	struct ev_loop *loop = w->other;	3343	EV_P = w->other;
3082		3344
3083	while (fdchangecnt)	3345	while (fdchangecnt)
3084	{	3346	{
3085	fd_reify (EV_A);	3347	fd_reify (EV_A);
3086	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3348	ev_loop (EV_A_ EVLOOP_NONBLOCK);
…		…
3094	ev_embed w = (ev_embed )(((char *)fork_w) - offsetof (ev_embed, fork));	3356	ev_embed w = (ev_embed )(((char *)fork_w) - offsetof (ev_embed, fork));
3095		3357
3096	ev_embed_stop (EV_A_ w);	3358	ev_embed_stop (EV_A_ w);
3097		3359
3098	{	3360	{
3099	struct ev_loop *loop = w->other;	3361	EV_P = w->other;
3100		3362
3101	ev_loop_fork (EV_A);	3363	ev_loop_fork (EV_A);
3102	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3364	ev_loop (EV_A_ EVLOOP_NONBLOCK);
3103	}	3365	}
3104		3366
…		…
3118	{	3380	{
3119	if (expect_false (ev_is_active (w)))	3381	if (expect_false (ev_is_active (w)))
3120	return;	3382	return;
3121		3383
3122	{	3384	{
3123	struct ev_loop *loop = w->other;	3385	EV_P = w->other;
3124	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3386	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);	3387	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3126	}	3388	}
3127		3389
3128	EV_FREQUENT_CHECK;	3390	EV_FREQUENT_CHECK;
…		…
3240		3502
3241	void	3503	void
3242	ev_async_send (EV_P_ ev_async *w)	3504	ev_async_send (EV_P_ ev_async *w)
3243	{	3505	{
3244	w->sent = 1;	3506	w->sent = 1;
3245	evpipe_write (EV_A_ &gotasync);	3507	evpipe_write (EV_A_ &async_pending);
3246	}	3508	}
3247	#endif	3509	#endif
3248		3510
3249	/*****************************************************************************/	3511	/*****************************************************************************/
3250		3512
…		…
3399	if (types & EV_CHECK)	3661	if (types & EV_CHECK)
3400	for (i = checkcnt; i--; )	3662	for (i = checkcnt; i--; )
3401	cb (EV_A_ EV_CHECK, checks [i]);	3663	cb (EV_A_ EV_CHECK, checks [i]);
3402		3664
3403	if (types & EV_SIGNAL)	3665	if (types & EV_SIGNAL)
3404	for (i = 0; i < signalmax; ++i)	3666	for (i = 0; i < EV_NSIG - 1; ++i)
3405	for (wl = signals [i].head; wl; )	3667	for (wl = signals [i].head; wl; )
3406	{	3668	{
3407	wn = wl->next;	3669	wn = wl->next;
3408	cb (EV_A_ EV_SIGNAL, wl);	3670	cb (EV_A_ EV_SIGNAL, wl);
3409	wl = wn;	3671	wl = wn;

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+Removed lines
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+Changed lines
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Comparing libev/ev.c (file contents): Revision 1.297 by root, Fri Jul 10 00:36:21 2009 UTC vs. Revision 1.322 by root, Thu Jan 7 06:49:31 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 1.322 by root, Thu Jan 7 06:49:31 2010 UTC