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

Comparing libev/ev.c (file contents):
Revision 1.293 by root, Mon Jun 29 18:46:52 2009 UTC vs.
Revision 1.319 by root, Wed Nov 18 10:25:22 2009 UTC

…		…
133	# else	133	# else
134	# define EV_USE_INOTIFY 0	134	# define EV_USE_INOTIFY 0
135	# endif	135	# endif
136	# endif	136	# endif
137		137
		138	# ifndef EV_USE_SIGNALFD
		139	# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
		140	# define EV_USE_SIGNALFD 1
		141	# else
		142	# define EV_USE_SIGNALFD 0
		143	# endif
		144	# endif
		145
138	# ifndef EV_USE_EVENTFD	146	# ifndef EV_USE_EVENTFD
139	# if HAVE_EVENTFD	147	# if HAVE_EVENTFD
140	# define EV_USE_EVENTFD 1	148	# define EV_USE_EVENTFD 1
141	# else	149	# else
142	# define EV_USE_EVENTFD 0	150	# define EV_USE_EVENTFD 0
…		…
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
…		…
391	# define inline_speed static noinline	473	# define inline_speed static noinline
392	#else	474	#else
393	# define inline_speed static inline	475	# define inline_speed static inline
394	#endif	476	#endif
395		477
396	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	478	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		479
		480	#if EV_MINPRI == EV_MAXPRI
		481	# define ABSPRI(w) (((W)w), 0)
		482	#else
397	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	483	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		484	#endif
398		485
399	#define EMPTY /* required for microsofts broken pseudo-c compiler */	486	#define EMPTY /* required for microsofts broken pseudo-c compiler */
400	#define EMPTY2(a,b) /* used to suppress some warnings */	487	#define EMPTY2(a,b) /* used to suppress some warnings */
401		488
402	typedef ev_watcher *W;	489	typedef ev_watcher *W;
…		…
414		501
415	#if EV_USE_MONOTONIC	502	#if EV_USE_MONOTONIC
416	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? */
417	#endif	504	#endif
418		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 (fd, 0)
		511	#endif
		512	#ifndef EV_WIN32_CLOSE_FD
		513	# define EV_WIN32_CLOSE_FD(fd) close (fd)
		514	#endif
		515
419	#ifdef _WIN32	516	#ifdef _WIN32
420	# include "ev_win32.c"	517	# include "ev_win32.c"
421	#endif	518	#endif
422		519
423	/*****************************************************************************/	520	/*****************************************************************************/
…		…
485	#define ev_malloc(size) ev_realloc (0, (size))	582	#define ev_malloc(size) ev_realloc (0, (size))
486	#define ev_free(ptr) ev_realloc ((ptr), 0)	583	#define ev_free(ptr) ev_realloc ((ptr), 0)
487		584
488	/*****************************************************************************/	585	/*****************************************************************************/
489		586
		587	/* set in reify when reification needed */
		588	#define EV_ANFD_REIFY 1
		589
490	/* file descriptor info structure */	590	/* file descriptor info structure */
491	typedef struct	591	typedef struct
492	{	592	{
493	WL head;	593	WL head;
494	unsigned char events; /* the events watched for */	594	unsigned char events; /* the events watched for */
495	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) */
496	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 */
497	unsigned char unused;	597	unsigned char unused;
498	#if EV_USE_EPOLL	598	#if EV_USE_EPOLL
499	unsigned int egen; /* generation counter to counter epoll bugs */	599	unsigned int egen; /* generation counter to counter epoll bugs */
500	#endif	600	#endif
…		…
562		662
563	static int ev_default_loop_ptr;	663	static int ev_default_loop_ptr;
564		664
565	#endif	665	#endif
566		666
		667	#if EV_MINIMAL < 2
		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)
		670	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		671	#else
		672	# define EV_RELEASE_CB (void)0
		673	# define EV_ACQUIRE_CB (void)0
		674	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		675	#endif
		676
		677	#define EVUNLOOP_RECURSE 0x80
		678
567	/*****************************************************************************/	679	/*****************************************************************************/
568		680
569	#ifndef EV_HAVE_EV_TIME	681	#ifndef EV_HAVE_EV_TIME
570	ev_tstamp	682	ev_tstamp
571	ev_time (void)	683	ev_time (void)
…		…
627		739
628	tv.tv_sec = (time_t)delay;	740	tv.tv_sec = (time_t)delay;
629	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	741	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
630		742
631	/* 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 */
632	/* somehting not guaranteed by newer posix versions, but guaranteed */	744	/* something not guaranteed by newer posix versions, but guaranteed */
633	/* by older ones */	745	/* by older ones */
634	select (0, 0, 0, 0, &tv);	746	select (0, 0, 0, 0, &tv);
635	#endif	747	#endif
636	}	748	}
637	}	749	}
…		…
745	}	857	}
746		858
747	/*****************************************************************************/	859	/*****************************************************************************/
748		860
749	inline_speed void	861	inline_speed void
750	fd_event (EV_P_ int fd, int revents)	862	fd_event_nc (EV_P_ int fd, int revents)
751	{	863	{
752	ANFD *anfd = anfds + fd;	864	ANFD *anfd = anfds + fd;
753	ev_io *w;	865	ev_io *w;
754		866
755	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)
…		…
759	if (ev)	871	if (ev)
760	ev_feed_event (EV_A_ (W)w, ev);	872	ev_feed_event (EV_A_ (W)w, ev);
761	}	873	}
762	}	874	}
763		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
764	void	887	void
765	ev_feed_fd_event (EV_P_ int fd, int revents)	888	ev_feed_fd_event (EV_P_ int fd, int revents)
766	{	889	{
767	if (fd >= 0 && fd < anfdmax)	890	if (fd >= 0 && fd < anfdmax)
768	fd_event (EV_A_ fd, revents);	891	fd_event_nc (EV_A_ fd, revents);
769	}	892	}
770		893
771	/* make sure the external fd watch events are in-sync */	894	/* make sure the external fd watch events are in-sync */
772	/* with the kernel/libev internal state */	895	/* with the kernel/libev internal state */
773	inline_size void	896	inline_size void
…		…
788		911
789	#if EV_SELECT_IS_WINSOCKET	912	#if EV_SELECT_IS_WINSOCKET
790	if (events)	913	if (events)
791	{	914	{
792	unsigned long arg;	915	unsigned long arg;
793	#ifdef EV_FD_TO_WIN32_HANDLE
794	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	916	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
795	#else
796	anfd->handle = _get_osfhandle (fd);
797	#endif
798	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	917	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
799	}	918	}
800	#endif	919	#endif
801		920
802	{	921	{
…		…
873		992
874	for (fd = anfdmax; fd--; )	993	for (fd = anfdmax; fd--; )
875	if (anfds [fd].events)	994	if (anfds [fd].events)
876	{	995	{
877	fd_kill (EV_A_ fd);	996	fd_kill (EV_A_ fd);
878	return;	997	break;
879	}	998	}
880	}	999	}
881		1000
882	/* 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 */
883	static void noinline	1002	static void noinline
…		…
888	for (fd = 0; fd < anfdmax; ++fd)	1007	for (fd = 0; fd < anfdmax; ++fd)
889	if (anfds [fd].events)	1008	if (anfds [fd].events)
890	{	1009	{
891	anfds [fd].events = 0;	1010	anfds [fd].events = 0;
892	anfds [fd].emask = 0;	1011	anfds [fd].emask = 0;
893	fd_change (EV_A_ fd, EV__IOFDSET \| 1);	1012	fd_change (EV_A_ fd, EV__IOFDSET \| EV_ANFD_REIFY);
894	}	1013	}
895	}	1014	}
896		1015
897	/*****************************************************************************/	1016	/*****************************************************************************/
898		1017
…		…
973		1092
974	for (;;)	1093	for (;;)
975	{	1094	{
976	int c = k << 1;	1095	int c = k << 1;
977		1096
978	if (c > N + HEAP0 - 1)	1097	if (c >= N + HEAP0)
979	break;	1098	break;
980		1099
981	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])
982	? 1 : 0;	1101	? 1 : 0;
983		1102
…		…
1019		1138
1020	/* move an element suitably so it is in a correct place */	1139	/* move an element suitably so it is in a correct place */
1021	inline_size void	1140	inline_size void
1022	adjustheap (ANHE *heap, int N, int k)	1141	adjustheap (ANHE *heap, int N, int k)
1023	{	1142	{
1024	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)]))
1025	upheap (heap, k);	1144	upheap (heap, k);
1026	else	1145	else
1027	downheap (heap, N, k);	1146	downheap (heap, N, k);
1028	}	1147	}
1029		1148
…		…
1042	/*****************************************************************************/	1161	/*****************************************************************************/
1043		1162
1044	/* associate signal watchers to a signal signal */	1163	/* associate signal watchers to a signal signal */
1045	typedef struct	1164	typedef struct
1046	{	1165	{
		1166	EV_ATOMIC_T pending;
		1167	#if EV_MULTIPLICITY
		1168	EV_P;
		1169	#endif
1047	WL head;	1170	WL head;
1048	EV_ATOMIC_T gotsig;
1049	} ANSIG;	1171	} ANSIG;
1050		1172
1051	static ANSIG *signals;	1173	static ANSIG signals [EV_NSIG - 1];
1052	static int signalmax;
1053
1054	static EV_ATOMIC_T gotsig;
1055		1174
1056	/*****************************************************************************/	1175	/*****************************************************************************/
1057		1176
1058	/* used to prepare libev internal fd's */	1177	/* used to prepare libev internal fd's */
1059	/* this is not fork-safe */	1178	/* this is not fork-safe */
…		…
1073	evpipe_init (EV_P)	1192	evpipe_init (EV_P)
1074	{	1193	{
1075	if (!ev_is_active (&pipe_w))	1194	if (!ev_is_active (&pipe_w))
1076	{	1195	{
1077	#if EV_USE_EVENTFD	1196	#if EV_USE_EVENTFD
		1197	evfd = eventfd (0, EFD_NONBLOCK \| EFD_CLOEXEC);
		1198	if (evfd < 0 && errno == EINVAL)
1078	if ((evfd = eventfd (0, 0)) >= 0)	1199	evfd = eventfd (0, 0);
		1200
		1201	if (evfd >= 0)
1079	{	1202	{
1080	evpipe [0] = -1;	1203	evpipe [0] = -1;
1081	fd_intern (evfd);	1204	fd_intern (evfd); /* doing it twice doesn't hurt */
1082	ev_io_set (&pipe_w, evfd, EV_READ);	1205	ev_io_set (&pipe_w, evfd, EV_READ);
1083	}	1206	}
1084	else	1207	else
1085	#endif	1208	#endif
1086	{	1209	{
…		…
1123	/* called whenever the libev signal pipe */	1246	/* called whenever the libev signal pipe */
1124	/* got some events (signal, async) */	1247	/* got some events (signal, async) */
1125	static void	1248	static void
1126	pipecb (EV_P_ ev_io *iow, int revents)	1249	pipecb (EV_P_ ev_io *iow, int revents)
1127	{	1250	{
		1251	int i;
		1252
1128	#if EV_USE_EVENTFD	1253	#if EV_USE_EVENTFD
1129	if (evfd >= 0)	1254	if (evfd >= 0)
1130	{	1255	{
1131	uint64_t counter;	1256	uint64_t counter;
1132	read (evfd, &counter, sizeof (uint64_t));	1257	read (evfd, &counter, sizeof (uint64_t));
…		…
1136	{	1261	{
1137	char dummy;	1262	char dummy;
1138	read (evpipe [0], &dummy, 1);	1263	read (evpipe [0], &dummy, 1);
1139	}	1264	}
1140		1265
1141	if (gotsig && ev_is_default_loop (EV_A))	1266	if (sig_pending)
1142	{	1267	{
1143	int signum;	1268	sig_pending = 0;
1144	gotsig = 0;
1145		1269
1146	for (signum = signalmax; signum--; )	1270	for (i = EV_NSIG - 1; i--; )
1147	if (signals [signum].gotsig)	1271	if (expect_false (signals [i].pending))
1148	ev_feed_signal_event (EV_A_ signum + 1);	1272	ev_feed_signal_event (EV_A_ i + 1);
1149	}	1273	}
1150		1274
1151	#if EV_ASYNC_ENABLE	1275	#if EV_ASYNC_ENABLE
1152	if (gotasync)	1276	if (async_pending)
1153	{	1277	{
1154	int i;	1278	async_pending = 0;
1155	gotasync = 0;
1156		1279
1157	for (i = asynccnt; i--; )	1280	for (i = asynccnt; i--; )
1158	if (asyncs [i]->sent)	1281	if (asyncs [i]->sent)
1159	{	1282	{
1160	asyncs [i]->sent = 0;	1283	asyncs [i]->sent = 0;
…		…
1168		1291
1169	static void	1292	static void
1170	ev_sighandler (int signum)	1293	ev_sighandler (int signum)
1171	{	1294	{
1172	#if EV_MULTIPLICITY	1295	#if EV_MULTIPLICITY
1173	struct ev_loop *loop = &default_loop_struct;	1296	EV_P = signals [signum - 1].loop;
1174	#endif	1297	#endif
1175		1298
1176	#if _WIN32	1299	#if _WIN32
1177	signal (signum, ev_sighandler);	1300	signal (signum, ev_sighandler);
1178	#endif	1301	#endif
1179		1302
1180	signals [signum - 1].gotsig = 1;	1303	signals [signum - 1].pending = 1;
1181	evpipe_write (EV_A_ &gotsig);	1304	evpipe_write (EV_A_ &sig_pending);
1182	}	1305	}
1183		1306
1184	void noinline	1307	void noinline
1185	ev_feed_signal_event (EV_P_ int signum)	1308	ev_feed_signal_event (EV_P_ int signum)
1186	{	1309	{
1187	WL w;	1310	WL w;
1188		1311
		1312	if (expect_false (signum <= 0 \|\| signum > EV_NSIG))
		1313	return;
		1314
		1315	--signum;
		1316
1189	#if EV_MULTIPLICITY	1317	#if EV_MULTIPLICITY
1190	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 */
1191	#endif	1319	/* or, likely more useful, feeding a signal nobody is waiting for */
1192		1320
1193	--signum;	1321	if (expect_false (signals [signum].loop != EV_A))
1194
1195	if (signum < 0 \|\| signum >= signalmax)
1196	return;	1322	return;
		1323	#endif
1197		1324
1198	signals [signum].gotsig = 0;	1325	signals [signum].pending = 0;
1199		1326
1200	for (w = signals [signum].head; w; w = w->next)	1327	for (w = signals [signum].head; w; w = w->next)
1201	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1328	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1202	}	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
1203		1350
1204	/*****************************************************************************/	1351	/*****************************************************************************/
1205		1352
1206	static WL childs [EV_PID_HASHSIZE];	1353	static WL childs [EV_PID_HASHSIZE];
1207		1354
…		…
1352	ev_backend (EV_P)	1499	ev_backend (EV_P)
1353	{	1500	{
1354	return backend;	1501	return backend;
1355	}	1502	}
1356		1503
		1504	#if EV_MINIMAL < 2
1357	unsigned int	1505	unsigned int
1358	ev_loop_count (EV_P)	1506	ev_loop_count (EV_P)
1359	{	1507	{
1360	return loop_count;	1508	return loop_count;
1361	}	1509	}
1362		1510
		1511	unsigned int
		1512	ev_loop_depth (EV_P)
		1513	{
		1514	return loop_depth;
		1515	}
		1516
1363	void	1517	void
1364	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1518	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1365	{	1519	{
1366	io_blocktime = interval;	1520	io_blocktime = interval;
1367	}	1521	}
…		…
1369	void	1523	void
1370	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1524	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1371	{	1525	{
1372	timeout_blocktime = interval;	1526	timeout_blocktime = interval;
1373	}	1527	}
		1528
		1529	void
		1530	ev_set_userdata (EV_P_ void *data)
		1531	{
		1532	userdata = data;
		1533	}
		1534
		1535	void *
		1536	ev_userdata (EV_P)
		1537	{
		1538	return userdata;
		1539	}
		1540
		1541	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1542	{
		1543	invoke_cb = invoke_pending_cb;
		1544	}
		1545
		1546	void ev_set_loop_release_cb (EV_P_ void (release)(EV_P), void (acquire)(EV_P))
		1547	{
		1548	release_cb = release;
		1549	acquire_cb = acquire;
		1550	}
		1551	#endif
1374		1552
1375	/* initialise a loop structure, must be zero-initialised */	1553	/* initialise a loop structure, must be zero-initialised */
1376	static void noinline	1554	static void noinline
1377	loop_init (EV_P_ unsigned int flags)	1555	loop_init (EV_P_ unsigned int flags)
1378	{	1556	{
…		…
1396	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1574	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1397	have_monotonic = 1;	1575	have_monotonic = 1;
1398	}	1576	}
1399	#endif	1577	#endif
1400		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"));
		1589
1401	ev_rt_now = ev_time ();	1590	ev_rt_now = ev_time ();
1402	mn_now = get_clock ();	1591	mn_now = get_clock ();
1403	now_floor = mn_now;	1592	now_floor = mn_now;
1404	rtmn_diff = ev_rt_now - mn_now;	1593	rtmn_diff = ev_rt_now - mn_now;
		1594	#if EV_MINIMAL < 2
		1595	invoke_cb = ev_invoke_pending;
		1596	#endif
1405		1597
1406	io_blocktime = 0.;	1598	io_blocktime = 0.;
1407	timeout_blocktime = 0.;	1599	timeout_blocktime = 0.;
1408	backend = 0;	1600	backend = 0;
1409	backend_fd = -1;	1601	backend_fd = -1;
1410	gotasync = 0;	1602	sig_pending = 0;
		1603	#if EV_ASYNC_ENABLE
		1604	async_pending = 0;
		1605	#endif
1411	#if EV_USE_INOTIFY	1606	#if EV_USE_INOTIFY
1412	fs_fd = -2;	1607	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1413	#endif	1608	#endif
1414		1609	#if EV_USE_SIGNALFD
1415	/* pid check not overridable via env */	1610	sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2;
1416	#ifndef _WIN32
1417	if (flags & EVFLAG_FORKCHECK)
1418	curpid = getpid ();
1419	#endif	1611	#endif
1420
1421	if (!(flags & EVFLAG_NOENV)
1422	&& !enable_secure ()
1423	&& getenv ("LIBEV_FLAGS"))
1424	flags = atoi (getenv ("LIBEV_FLAGS"));
1425		1612
1426	if (!(flags & 0x0000ffffU))	1613	if (!(flags & 0x0000ffffU))
1427	flags \|= ev_recommended_backends ();	1614	flags \|= ev_recommended_backends ();
1428		1615
1429	#if EV_USE_PORT	1616	#if EV_USE_PORT
…		…
1455	{	1642	{
1456	int i;	1643	int i;
1457		1644
1458	if (ev_is_active (&pipe_w))	1645	if (ev_is_active (&pipe_w))
1459	{	1646	{
1460	ev_ref (EV_A); /* signal watcher */	1647	/ev_ref (EV_A);/
1461	ev_io_stop (EV_A_ &pipe_w);	1648	/ev_io_stop (EV_A_ &pipe_w);/
1462		1649
1463	#if EV_USE_EVENTFD	1650	#if EV_USE_EVENTFD
1464	if (evfd >= 0)	1651	if (evfd >= 0)
1465	close (evfd);	1652	close (evfd);
1466	#endif	1653	#endif
1467		1654
1468	if (evpipe [0] >= 0)	1655	if (evpipe [0] >= 0)
1469	{	1656	{
1470	close (evpipe [0]);	1657	EV_WIN32_CLOSE_FD (evpipe [0]);
1471	close (evpipe [1]);	1658	EV_WIN32_CLOSE_FD (evpipe [1]);
1472	}	1659	}
1473	}	1660	}
		1661
		1662	#if EV_USE_SIGNALFD
		1663	if (ev_is_active (&sigfd_w))
		1664	close (sigfd);
		1665	#endif
1474		1666
1475	#if EV_USE_INOTIFY	1667	#if EV_USE_INOTIFY
1476	if (fs_fd >= 0)	1668	if (fs_fd >= 0)
1477	close (fs_fd);	1669	close (fs_fd);
1478	#endif	1670	#endif
…		…
1502	#if EV_IDLE_ENABLE	1694	#if EV_IDLE_ENABLE
1503	array_free (idle, [i]);	1695	array_free (idle, [i]);
1504	#endif	1696	#endif
1505	}	1697	}
1506		1698
1507	ev_free (anfds); anfdmax = 0;	1699	ev_free (anfds); anfds = 0; anfdmax = 0;
1508		1700
1509	/* have to use the microsoft-never-gets-it-right macro */	1701	/* have to use the microsoft-never-gets-it-right macro */
1510	array_free (rfeed, EMPTY);	1702	array_free (rfeed, EMPTY);
1511	array_free (fdchange, EMPTY);	1703	array_free (fdchange, EMPTY);
1512	array_free (timer, EMPTY);	1704	array_free (timer, EMPTY);
…		…
1547		1739
1548	if (ev_is_active (&pipe_w))	1740	if (ev_is_active (&pipe_w))
1549	{	1741	{
1550	/* this "locks" the handlers against writing to the pipe */	1742	/* this "locks" the handlers against writing to the pipe */
1551	/* while we modify the fd vars */	1743	/* while we modify the fd vars */
1552	gotsig = 1;	1744	sig_pending = 1;
1553	#if EV_ASYNC_ENABLE	1745	#if EV_ASYNC_ENABLE
1554	gotasync = 1;	1746	async_pending = 1;
1555	#endif	1747	#endif
1556		1748
1557	ev_ref (EV_A);	1749	ev_ref (EV_A);
1558	ev_io_stop (EV_A_ &pipe_w);	1750	ev_io_stop (EV_A_ &pipe_w);
1559		1751
…		…
1562	close (evfd);	1754	close (evfd);
1563	#endif	1755	#endif
1564		1756
1565	if (evpipe [0] >= 0)	1757	if (evpipe [0] >= 0)
1566	{	1758	{
1567	close (evpipe [0]);	1759	EV_WIN32_CLOSE_FD (evpipe [0]);
1568	close (evpipe [1]);	1760	EV_WIN32_CLOSE_FD (evpipe [1]);
1569	}	1761	}
1570		1762
1571	evpipe_init (EV_A);	1763	evpipe_init (EV_A);
1572	/* now iterate over everything, in case we missed something */	1764	/* now iterate over everything, in case we missed something */
1573	pipecb (EV_A_ &pipe_w, EV_READ);	1765	pipecb (EV_A_ &pipe_w, EV_READ);
…		…
1579	#if EV_MULTIPLICITY	1771	#if EV_MULTIPLICITY
1580		1772
1581	struct ev_loop *	1773	struct ev_loop *
1582	ev_loop_new (unsigned int flags)	1774	ev_loop_new (unsigned int flags)
1583	{	1775	{
1584	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));
1585		1777
1586	memset (loop, 0, sizeof (struct ev_loop));	1778	memset (EV_A, 0, sizeof (struct ev_loop));
1587
1588	loop_init (EV_A_ flags);	1779	loop_init (EV_A_ flags);
1589		1780
1590	if (ev_backend (EV_A))	1781	if (ev_backend (EV_A))
1591	return loop;	1782	return EV_A;
1592		1783
1593	return 0;	1784	return 0;
1594	}	1785	}
1595		1786
1596	void	1787	void
…		…
1603	void	1794	void
1604	ev_loop_fork (EV_P)	1795	ev_loop_fork (EV_P)
1605	{	1796	{
1606	postfork = 1; /* must be in line with ev_default_fork */	1797	postfork = 1; /* must be in line with ev_default_fork */
1607	}	1798	}
		1799	#endif /* multiplicity */
1608		1800
1609	#if EV_VERIFY	1801	#if EV_VERIFY
1610	static void noinline	1802	static void noinline
1611	verify_watcher (EV_P_ W w)	1803	verify_watcher (EV_P_ W w)
1612	{	1804	{
…		…
1640	verify_watcher (EV_A_ ws [cnt]);	1832	verify_watcher (EV_A_ ws [cnt]);
1641	}	1833	}
1642	}	1834	}
1643	#endif	1835	#endif
1644		1836
		1837	#if EV_MINIMAL < 2
1645	void	1838	void
1646	ev_loop_verify (EV_P)	1839	ev_loop_verify (EV_P)
1647	{	1840	{
1648	#if EV_VERIFY	1841	#if EV_VERIFY
1649	int i;	1842	int i;
…		…
1698	assert (checkmax >= checkcnt);	1891	assert (checkmax >= checkcnt);
1699	array_verify (EV_A_ (W *)checks, checkcnt);	1892	array_verify (EV_A_ (W *)checks, checkcnt);
1700		1893
1701	# if 0	1894	# if 0
1702	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)
1703	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)	1896	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1704	# endif
1705	#endif	1897	# endif
		1898	#endif
1706	}	1899	}
1707		1900	#endif
1708	#endif /* multiplicity */
1709		1901
1710	#if EV_MULTIPLICITY	1902	#if EV_MULTIPLICITY
1711	struct ev_loop *	1903	struct ev_loop *
1712	ev_default_loop_init (unsigned int flags)	1904	ev_default_loop_init (unsigned int flags)
1713	#else	1905	#else
…		…
1716	#endif	1908	#endif
1717	{	1909	{
1718	if (!ev_default_loop_ptr)	1910	if (!ev_default_loop_ptr)
1719	{	1911	{
1720	#if EV_MULTIPLICITY	1912	#if EV_MULTIPLICITY
1721	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1913	EV_P = ev_default_loop_ptr = &default_loop_struct;
1722	#else	1914	#else
1723	ev_default_loop_ptr = 1;	1915	ev_default_loop_ptr = 1;
1724	#endif	1916	#endif
1725		1917
1726	loop_init (EV_A_ flags);	1918	loop_init (EV_A_ flags);
…		…
1743		1935
1744	void	1936	void
1745	ev_default_destroy (void)	1937	ev_default_destroy (void)
1746	{	1938	{
1747	#if EV_MULTIPLICITY	1939	#if EV_MULTIPLICITY
1748	struct ev_loop *loop = ev_default_loop_ptr;	1940	EV_P = ev_default_loop_ptr;
1749	#endif	1941	#endif
1750		1942
1751	ev_default_loop_ptr = 0;	1943	ev_default_loop_ptr = 0;
1752		1944
1753	#ifndef _WIN32	1945	#ifndef _WIN32
…		…
1760		1952
1761	void	1953	void
1762	ev_default_fork (void)	1954	ev_default_fork (void)
1763	{	1955	{
1764	#if EV_MULTIPLICITY	1956	#if EV_MULTIPLICITY
1765	struct ev_loop *loop = ev_default_loop_ptr;	1957	EV_P = ev_default_loop_ptr;
1766	#endif	1958	#endif
1767		1959
1768	postfork = 1; /* must be in line with ev_loop_fork */	1960	postfork = 1; /* must be in line with ev_loop_fork */
1769	}	1961	}
1770		1962
…		…
1774	ev_invoke (EV_P_ void *w, int revents)	1966	ev_invoke (EV_P_ void *w, int revents)
1775	{	1967	{
1776	EV_CB_INVOKE ((W)w, revents);	1968	EV_CB_INVOKE ((W)w, revents);
1777	}	1969	}
1778		1970
1779	inline_speed void	1971	unsigned int
1780	call_pending (EV_P)	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;
		1981	}
		1982
		1983	void noinline
		1984	ev_invoke_pending (EV_P)
1781	{	1985	{
1782	int pri;	1986	int pri;
1783		1987
1784	for (pri = NUMPRI; pri--; )	1988	for (pri = NUMPRI; pri--; )
1785	while (pendingcnt [pri])	1989	while (pendingcnt [pri])
…		…
2020		2224
2021	mn_now = ev_rt_now;	2225	mn_now = ev_rt_now;
2022	}	2226	}
2023	}	2227	}
2024		2228
2025	static int loop_done;
2026
2027	void	2229	void
2028	ev_loop (EV_P_ int flags)	2230	ev_loop (EV_P_ int flags)
2029	{	2231	{
		2232	#if EV_MINIMAL < 2
		2233	++loop_depth;
		2234	#endif
		2235
		2236	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2237
2030	loop_done = EVUNLOOP_CANCEL;	2238	loop_done = EVUNLOOP_CANCEL;
2031		2239
2032	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2240	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2033		2241
2034	do	2242	do
2035	{	2243	{
2036	#if EV_VERIFY >= 2	2244	#if EV_VERIFY >= 2
2037	ev_loop_verify (EV_A);	2245	ev_loop_verify (EV_A);
…		…
2050	/* we might have forked, so queue fork handlers */	2258	/* we might have forked, so queue fork handlers */
2051	if (expect_false (postfork))	2259	if (expect_false (postfork))
2052	if (forkcnt)	2260	if (forkcnt)
2053	{	2261	{
2054	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2262	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2055	call_pending (EV_A);	2263	EV_INVOKE_PENDING;
2056	}	2264	}
2057	#endif	2265	#endif
2058		2266
2059	/* queue prepare watchers (and execute them) */	2267	/* queue prepare watchers (and execute them) */
2060	if (expect_false (preparecnt))	2268	if (expect_false (preparecnt))
2061	{	2269	{
2062	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2270	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2063	call_pending (EV_A);	2271	EV_INVOKE_PENDING;
2064	}	2272	}
		2273
		2274	if (expect_false (loop_done))
		2275	break;
2065		2276
2066	/* we might have forked, so reify kernel state if necessary */	2277	/* we might have forked, so reify kernel state if necessary */
2067	if (expect_false (postfork))	2278	if (expect_false (postfork))
2068	loop_fork (EV_A);	2279	loop_fork (EV_A);
2069		2280
…		…
2117	waittime -= sleeptime;	2328	waittime -= sleeptime;
2118	}	2329	}
2119	}	2330	}
2120	}	2331	}
2121		2332
		2333	#if EV_MINIMAL < 2
2122	++loop_count;	2334	++loop_count;
		2335	#endif
		2336	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2123	backend_poll (EV_A_ waittime);	2337	backend_poll (EV_A_ waittime);
		2338	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2124		2339
2125	/* update ev_rt_now, do magic */	2340	/* update ev_rt_now, do magic */
2126	time_update (EV_A_ waittime + sleeptime);	2341	time_update (EV_A_ waittime + sleeptime);
2127	}	2342	}
2128		2343
…		…
2139		2354
2140	/* queue check watchers, to be executed first */	2355	/* queue check watchers, to be executed first */
2141	if (expect_false (checkcnt))	2356	if (expect_false (checkcnt))
2142	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2357	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2143		2358
2144	call_pending (EV_A);	2359	EV_INVOKE_PENDING;
2145	}	2360	}
2146	while (expect_true (	2361	while (expect_true (
2147	activecnt	2362	activecnt
2148	&& !loop_done	2363	&& !loop_done
2149	&& !(flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK))	2364	&& !(flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK))
2150	));	2365	));
2151		2366
2152	if (loop_done == EVUNLOOP_ONE)	2367	if (loop_done == EVUNLOOP_ONE)
2153	loop_done = EVUNLOOP_CANCEL;	2368	loop_done = EVUNLOOP_CANCEL;
		2369
		2370	#if EV_MINIMAL < 2
		2371	--loop_depth;
		2372	#endif
2154	}	2373	}
2155		2374
2156	void	2375	void
2157	ev_unloop (EV_P_ int how)	2376	ev_unloop (EV_P_ int how)
2158	{	2377	{
…		…
2209	inline_size void	2428	inline_size void
2210	wlist_del (WL *head, WL elem)	2429	wlist_del (WL *head, WL elem)
2211	{	2430	{
2212	while (*head)	2431	while (*head)
2213	{	2432	{
2214	if (*head == elem)	2433	if (expect_true (*head == elem))
2215	{	2434	{
2216	*head = elem->next;	2435	*head = elem->next;
2217	return;	2436	break;
2218	}	2437	}
2219		2438
2220	head = &(*head)->next;	2439	head = &(*head)->next;
2221	}	2440	}
2222	}	2441	}
…		…
2250	}	2469	}
2251		2470
2252	inline_size void	2471	inline_size void
2253	pri_adjust (EV_P_ W w)	2472	pri_adjust (EV_P_ W w)
2254	{	2473	{
2255	int pri = w->priority;	2474	int pri = ev_priority (w);
2256	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2475	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2257	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2476	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2258	w->priority = pri;	2477	ev_set_priority (w, pri);
2259	}	2478	}
2260		2479
2261	inline_speed void	2480	inline_speed void
2262	ev_start (EV_P_ W w, int active)	2481	ev_start (EV_P_ W w, int active)
2263	{	2482	{
…		…
2290		2509
2291	ev_start (EV_A_ (W)w, 1);	2510	ev_start (EV_A_ (W)w, 1);
2292	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2511	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2293	wlist_add (&anfds[fd].head, (WL)w);	2512	wlist_add (&anfds[fd].head, (WL)w);
2294		2513
2295	fd_change (EV_A_ fd, w->events & EV__IOFDSET \| 1);	2514	fd_change (EV_A_ fd, w->events & EV__IOFDSET \| EV_ANFD_REIFY);
2296	w->events &= ~EV__IOFDSET;	2515	w->events &= ~EV__IOFDSET;
2297		2516
2298	EV_FREQUENT_CHECK;	2517	EV_FREQUENT_CHECK;
2299	}	2518	}
2300		2519
…		…
2394	}	2613	}
2395		2614
2396	EV_FREQUENT_CHECK;	2615	EV_FREQUENT_CHECK;
2397	}	2616	}
2398		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
2399	#if EV_PERIODIC_ENABLE	2624	#if EV_PERIODIC_ENABLE
2400	void noinline	2625	void noinline
2401	ev_periodic_start (EV_P_ ev_periodic *w)	2626	ev_periodic_start (EV_P_ ev_periodic *w)
2402	{	2627	{
2403	if (expect_false (ev_is_active (w)))	2628	if (expect_false (ev_is_active (w)))
…		…
2470	#endif	2695	#endif
2471		2696
2472	void noinline	2697	void noinline
2473	ev_signal_start (EV_P_ ev_signal *w)	2698	ev_signal_start (EV_P_ ev_signal *w)
2474	{	2699	{
2475	#if EV_MULTIPLICITY
2476	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2477	#endif
2478	if (expect_false (ev_is_active (w)))	2700	if (expect_false (ev_is_active (w)))
2479	return;	2701	return;
2480		2702
2481	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));
2482		2704
2483	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));
2484		2708
2485	EV_FREQUENT_CHECK;	2709	signals [w->signum - 1].loop = EV_A;
		2710	#endif
2486		2711
		2712	EV_FREQUENT_CHECK;
		2713
		2714	#if EV_USE_SIGNALFD
		2715	if (sigfd == -2)
2487	{	2716	{
2488	#ifndef _WIN32	2717	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK \| SFD_CLOEXEC);
2489	sigset_t full, prev;	2718	if (sigfd < 0 && errno == EINVAL)
2490	sigfillset (&full);	2719	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2491	sigprocmask (SIG_SETMASK, &full, &prev);
2492	#endif
2493		2720
2494	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 */
2495		2724
2496	#ifndef _WIN32	2725	sigemptyset (&sigfd_set);
2497	sigprocmask (SIG_SETMASK, &prev, 0);	2726
2498	#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	}
2499	}	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
2500		2743
2501	ev_start (EV_A_ (W)w, 1);	2744	ev_start (EV_A_ (W)w, 1);
2502	wlist_add (&signals [w->signum - 1].head, (WL)w);	2745	wlist_add (&signals [w->signum - 1].head, (WL)w);
2503		2746
2504	if (!((WL)w)->next)	2747	if (!((WL)w)->next)
		2748	# if EV_USE_SIGNALFD
		2749	if (sigfd < 0) /TODO/
		2750	# endif
2505	{	2751	{
2506	#if _WIN32	2752	# if _WIN32
		2753	evpipe_init (EV_A);
		2754
2507	signal (w->signum, ev_sighandler);	2755	signal (w->signum, ev_sighandler);
2508	#else	2756	# else
2509	struct sigaction sa;	2757	struct sigaction sa;
		2758
		2759	evpipe_init (EV_A);
		2760
2510	sa.sa_handler = ev_sighandler;	2761	sa.sa_handler = ev_sighandler;
2511	sigfillset (&sa.sa_mask);	2762	sigfillset (&sa.sa_mask);
2512	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 */
2513	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);
2514	#endif	2769	#endif
2515	}	2770	}
2516		2771
2517	EV_FREQUENT_CHECK;	2772	EV_FREQUENT_CHECK;
2518	}	2773	}
2519		2774
2520	void noinline	2775	void noinline
…		…
2528		2783
2529	wlist_del (&signals [w->signum - 1].head, (WL)w);	2784	wlist_del (&signals [w->signum - 1].head, (WL)w);
2530	ev_stop (EV_A_ (W)w);	2785	ev_stop (EV_A_ (W)w);
2531		2786
2532	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	sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D
		2796	sigdelset (&sigfd_set, w->signum);
		2797	signalfd (sigfd, &sigfd_set, 0);
		2798	sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D
		2799	/TODO: maybe unblock signal? /
		2800	}
		2801	else
		2802	#endif
2533	signal (w->signum, SIG_DFL);	2803	signal (w->signum, SIG_DFL);
		2804	}
2534		2805
2535	EV_FREQUENT_CHECK;	2806	EV_FREQUENT_CHECK;
2536	}	2807	}
2537		2808
2538	void	2809	void
…		…
2586	static void noinline	2857	static void noinline
2587	infy_add (EV_P_ ev_stat *w)	2858	infy_add (EV_P_ ev_stat *w)
2588	{	2859	{
2589	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);	2860	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);
2590		2861
2591	if (w->wd < 0)	2862	if (w->wd >= 0)
		2863	{
		2864	struct statfs sfs;
		2865
		2866	/* now local changes will be tracked by inotify, but remote changes won't */
		2867	/* unless the filesystem is known to be local, we therefore still poll */
		2868	/* also do poll on <2.6.25, but with normal frequency */
		2869
		2870	if (!fs_2625)
		2871	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		2872	else if (!statfs (w->path, &sfs)
		2873	&& (sfs.f_type == 0x1373 /* devfs */
		2874	\|\| sfs.f_type == 0xEF53 /* ext2/3 */
		2875	\|\| sfs.f_type == 0x3153464a /* jfs */
		2876	\|\| sfs.f_type == 0x52654973 /* reiser3 */
		2877	\|\| sfs.f_type == 0x01021994 /* tempfs */
		2878	\|\| sfs.f_type == 0x58465342 /* xfs */))
		2879	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
		2880	else
		2881	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2592	{	2882	}
		2883	else
		2884	{
		2885	/* can't use inotify, continue to stat */
2593	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;	2886	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2594	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2595		2887
2596	/* monitor some parent directory for speedup hints */	2888	/* if path is not there, monitor some parent directory for speedup hints */
2597	/* note that exceeding the hardcoded path limit is not a correctness issue, */	2889	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2598	/* but an efficiency issue only */	2890	/* but an efficiency issue only */
2599	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)	2891	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)
2600	{	2892	{
2601	char path [4096];	2893	char path [4096];
…		…
2617	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));	2909	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));
2618	}	2910	}
2619	}	2911	}
2620		2912
2621	if (w->wd >= 0)	2913	if (w->wd >= 0)
2622	{
2623	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2914	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2624		2915
2625	/* now local changes will be tracked by inotify, but remote changes won't */	2916	/* now re-arm timer, if required */
2626	/* unless the filesystem it known to be local, we therefore still poll */	2917	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2627	/* also do poll on <2.6.25, but with normal frequency */
2628	struct statfs sfs;
2629
2630	if (fs_2625 && !statfs (w->path, &sfs))
2631	if (sfs.f_type == 0x1373 /* devfs */
2632	\|\| sfs.f_type == 0xEF53 /* ext2/3 */
2633	\|\| sfs.f_type == 0x3153464a /* jfs */
2634	\|\| sfs.f_type == 0x52654973 /* reiser3 */
2635	\|\| sfs.f_type == 0x01021994 /* tempfs */
2636	\|\| sfs.f_type == 0x58465342 /* xfs */)
2637	return;
2638
2639	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2640	ev_timer_again (EV_A_ &w->timer);	2918	ev_timer_again (EV_A_ &w->timer);
2641	}	2919	if (ev_is_active (&w->timer)) ev_unref (EV_A);
2642	}	2920	}
2643		2921
2644	static void noinline	2922	static void noinline
2645	infy_del (EV_P_ ev_stat *w)	2923	infy_del (EV_P_ ev_stat *w)
2646	{	2924	{
…		…
2722	return;	3000	return;
2723		3001
2724	fs_2625 = 1;	3002	fs_2625 = 1;
2725	}	3003	}
2726		3004
		3005	inline_size int
		3006	infy_newfd (void)
		3007	{
		3008	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3009	int fd = inotify_init1 (IN_CLOEXEC \| IN_NONBLOCK);
		3010	if (fd >= 0)
		3011	return fd;
		3012	#endif
		3013	return inotify_init ();
		3014	}
		3015
2727	inline_size void	3016	inline_size void
2728	infy_init (EV_P)	3017	infy_init (EV_P)
2729	{	3018	{
2730	if (fs_fd != -2)	3019	if (fs_fd != -2)
2731	return;	3020	return;
2732		3021
2733	fs_fd = -1;	3022	fs_fd = -1;
2734		3023
2735	check_2625 (EV_A);	3024	check_2625 (EV_A);
2736		3025
2737	fs_fd = inotify_init ();	3026	fs_fd = infy_newfd ();
2738		3027
2739	if (fs_fd >= 0)	3028	if (fs_fd >= 0)
2740	{	3029	{
		3030	fd_intern (fs_fd);
2741	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3031	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2742	ev_set_priority (&fs_w, EV_MAXPRI);	3032	ev_set_priority (&fs_w, EV_MAXPRI);
2743	ev_io_start (EV_A_ &fs_w);	3033	ev_io_start (EV_A_ &fs_w);
		3034	ev_unref (EV_A);
2744	}	3035	}
2745	}	3036	}
2746		3037
2747	inline_size void	3038	inline_size void
2748	infy_fork (EV_P)	3039	infy_fork (EV_P)
…		…
2750	int slot;	3041	int slot;
2751		3042
2752	if (fs_fd < 0)	3043	if (fs_fd < 0)
2753	return;	3044	return;
2754		3045
		3046	ev_ref (EV_A);
		3047	ev_io_stop (EV_A_ &fs_w);
2755	close (fs_fd);	3048	close (fs_fd);
2756	fs_fd = inotify_init ();	3049	fs_fd = infy_newfd ();
		3050
		3051	if (fs_fd >= 0)
		3052	{
		3053	fd_intern (fs_fd);
		3054	ev_io_set (&fs_w, fs_fd, EV_READ);
		3055	ev_io_start (EV_A_ &fs_w);
		3056	ev_unref (EV_A);
		3057	}
2757		3058
2758	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3059	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2759	{	3060	{
2760	WL w_ = fs_hash [slot].head;	3061	WL w_ = fs_hash [slot].head;
2761	fs_hash [slot].head = 0;	3062	fs_hash [slot].head = 0;
…		…
2768	w->wd = -1;	3069	w->wd = -1;
2769		3070
2770	if (fs_fd >= 0)	3071	if (fs_fd >= 0)
2771	infy_add (EV_A_ w); /* re-add, no matter what */	3072	infy_add (EV_A_ w); /* re-add, no matter what */
2772	else	3073	else
		3074	{
		3075	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3076	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2773	ev_timer_again (EV_A_ &w->timer);	3077	ev_timer_again (EV_A_ &w->timer);
		3078	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		3079	}
2774	}	3080	}
2775	}	3081	}
2776	}	3082	}
2777		3083
2778	#endif	3084	#endif
…		…
2848		3154
2849	if (fs_fd >= 0)	3155	if (fs_fd >= 0)
2850	infy_add (EV_A_ w);	3156	infy_add (EV_A_ w);
2851	else	3157	else
2852	#endif	3158	#endif
		3159	{
2853	ev_timer_again (EV_A_ &w->timer);	3160	ev_timer_again (EV_A_ &w->timer);
		3161	ev_unref (EV_A);
		3162	}
2854		3163
2855	ev_start (EV_A_ (W)w, 1);	3164	ev_start (EV_A_ (W)w, 1);
2856		3165
2857	EV_FREQUENT_CHECK;	3166	EV_FREQUENT_CHECK;
2858	}	3167	}
…		…
2867	EV_FREQUENT_CHECK;	3176	EV_FREQUENT_CHECK;
2868		3177
2869	#if EV_USE_INOTIFY	3178	#if EV_USE_INOTIFY
2870	infy_del (EV_A_ w);	3179	infy_del (EV_A_ w);
2871	#endif	3180	#endif
		3181
		3182	if (ev_is_active (&w->timer))
		3183	{
		3184	ev_ref (EV_A);
2872	ev_timer_stop (EV_A_ &w->timer);	3185	ev_timer_stop (EV_A_ &w->timer);
		3186	}
2873		3187
2874	ev_stop (EV_A_ (W)w);	3188	ev_stop (EV_A_ (W)w);
2875		3189
2876	EV_FREQUENT_CHECK;	3190	EV_FREQUENT_CHECK;
2877	}	3191	}
…		…
3018	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3332	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3019	{	3333	{
3020	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));	3334	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
3021		3335
3022	{	3336	{
3023	struct ev_loop *loop = w->other;	3337	EV_P = w->other;
3024		3338
3025	while (fdchangecnt)	3339	while (fdchangecnt)
3026	{	3340	{
3027	fd_reify (EV_A);	3341	fd_reify (EV_A);
3028	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3342	ev_loop (EV_A_ EVLOOP_NONBLOCK);
…		…
3036	ev_embed w = (ev_embed )(((char *)fork_w) - offsetof (ev_embed, fork));	3350	ev_embed w = (ev_embed )(((char *)fork_w) - offsetof (ev_embed, fork));
3037		3351
3038	ev_embed_stop (EV_A_ w);	3352	ev_embed_stop (EV_A_ w);
3039		3353
3040	{	3354	{
3041	struct ev_loop *loop = w->other;	3355	EV_P = w->other;
3042		3356
3043	ev_loop_fork (EV_A);	3357	ev_loop_fork (EV_A);
3044	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3358	ev_loop (EV_A_ EVLOOP_NONBLOCK);
3045	}	3359	}
3046		3360
…		…
3060	{	3374	{
3061	if (expect_false (ev_is_active (w)))	3375	if (expect_false (ev_is_active (w)))
3062	return;	3376	return;
3063		3377
3064	{	3378	{
3065	struct ev_loop *loop = w->other;	3379	EV_P = w->other;
3066	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3380	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3067	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3381	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3068	}	3382	}
3069		3383
3070	EV_FREQUENT_CHECK;	3384	EV_FREQUENT_CHECK;
…		…
3182		3496
3183	void	3497	void
3184	ev_async_send (EV_P_ ev_async *w)	3498	ev_async_send (EV_P_ ev_async *w)
3185	{	3499	{
3186	w->sent = 1;	3500	w->sent = 1;
3187	evpipe_write (EV_A_ &gotasync);	3501	evpipe_write (EV_A_ &async_pending);
3188	}	3502	}
3189	#endif	3503	#endif
3190		3504
3191	/*****************************************************************************/	3505	/*****************************************************************************/
3192		3506
…		…
3341	if (types & EV_CHECK)	3655	if (types & EV_CHECK)
3342	for (i = checkcnt; i--; )	3656	for (i = checkcnt; i--; )
3343	cb (EV_A_ EV_CHECK, checks [i]);	3657	cb (EV_A_ EV_CHECK, checks [i]);
3344		3658
3345	if (types & EV_SIGNAL)	3659	if (types & EV_SIGNAL)
3346	for (i = 0; i < signalmax; ++i)	3660	for (i = 0; i < EV_NSIG - 1; ++i)
3347	for (wl = signals [i].head; wl; )	3661	for (wl = signals [i].head; wl; )
3348	{	3662	{
3349	wn = wl->next;	3663	wn = wl->next;
3350	cb (EV_A_ EV_SIGNAL, wl);	3664	cb (EV_A_ EV_SIGNAL, wl);
3351	wl = wn;	3665	wl = wn;

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+Removed lines
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Comparing libev/ev.c (file contents): Revision 1.293 by root, Mon Jun 29 18:46:52 2009 UTC vs. Revision 1.319 by root, Wed Nov 18 10:25:22 2009 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.293 by root, Mon Jun 29 18:46:52 2009 UTC vs.
Revision 1.319 by root, Wed Nov 18 10:25:22 2009 UTC