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

Comparing libev/ev.c (file contents):
Revision 1.292 by root, Mon Jun 29 07:22:56 2009 UTC vs.
Revision 1.314 by root, Wed Aug 26 17:31:20 2009 UTC

…		…
133	# else	133	# else
134	# define EV_USE_INOTIFY 0	134	# define EV_USE_INOTIFY 0
135	# endif	135	# endif
136	# endif	136	# endif
137		137
		138	# ifndef EV_USE_SIGNALFD
		139	# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
		140	# define EV_USE_SIGNALFD 1
		141	# else
		142	# define EV_USE_SIGNALFD 0
		143	# endif
		144	# endif
		145
138	# ifndef EV_USE_EVENTFD	146	# ifndef EV_USE_EVENTFD
139	# if HAVE_EVENTFD	147	# if HAVE_EVENTFD
140	# define EV_USE_EVENTFD 1	148	# define EV_USE_EVENTFD 1
141	# else	149	# else
142	# define EV_USE_EVENTFD 0	150	# define EV_USE_EVENTFD 0
…		…
178	# endif	186	# endif
179	#endif	187	#endif
180		188
181	/* this block tries to deduce configuration from header-defined symbols and defaults */	189	/* this block tries to deduce configuration from header-defined symbols and defaults */
182		190
		191	/* try to deduce the maximum number of signals on this platform */
		192	#if defined (EV_NSIG)
		193	/* use what's provided */
		194	#elif defined (NSIG)
		195	# define EV_NSIG (NSIG)
		196	#elif defined(_NSIG)
		197	# define EV_NSIG (_NSIG)
		198	#elif defined (SIGMAX)
		199	# define EV_NSIG (SIGMAX+1)
		200	#elif defined (SIG_MAX)
		201	# define EV_NSIG (SIG_MAX+1)
		202	#elif defined (_SIG_MAX)
		203	# define EV_NSIG (_SIG_MAX+1)
		204	#elif defined (MAXSIG)
		205	# define EV_NSIG (MAXSIG+1)
		206	#elif defined (MAX_SIG)
		207	# define EV_NSIG (MAX_SIG+1)
		208	#elif defined (SIGARRAYSIZE)
		209	# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
		210	#elif defined (_sys_nsig)
		211	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
		212	#else
		213	# error "unable to find value for NSIG, please report"
		214	/* to make it compile regardless, just remove the above line */
		215	# define EV_NSIG 65
		216	#endif
		217
183	#ifndef EV_USE_CLOCK_SYSCALL	218	#ifndef EV_USE_CLOCK_SYSCALL
184	# if __linux && __GLIBC__ >= 2	219	# if __linux && __GLIBC__ >= 2
185	# define EV_USE_CLOCK_SYSCALL 1	220	# define EV_USE_CLOCK_SYSCALL 1
186	# else	221	# else
187	# define EV_USE_CLOCK_SYSCALL 0	222	# define EV_USE_CLOCK_SYSCALL 0
…		…
263	#ifndef EV_USE_EVENTFD	298	#ifndef EV_USE_EVENTFD
264	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))	299	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265	# define EV_USE_EVENTFD 1	300	# define EV_USE_EVENTFD 1
266	# else	301	# else
267	# define EV_USE_EVENTFD 0	302	# define EV_USE_EVENTFD 0
		303	# endif
		304	#endif
		305
		306	#ifndef EV_USE_SIGNALFD
		307	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		308	# define EV_USE_SIGNALFD 1
		309	# else
		310	# define EV_USE_SIGNALFD 0
268	# endif	311	# endif
269	#endif	312	#endif
270		313
271	#if 0 /* debugging */	314	#if 0 /* debugging */
272	# define EV_VERIFY 3	315	# define EV_VERIFY 3
…		…
339	#endif	382	#endif
340		383
341	#if EV_USE_EVENTFD	384	#if EV_USE_EVENTFD
342	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	385	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
343	# include <stdint.h>	386	# include <stdint.h>
		387	# ifndef EFD_NONBLOCK
		388	# define EFD_NONBLOCK O_NONBLOCK
		389	# endif
		390	# ifndef EFD_CLOEXEC
		391	# ifdef O_CLOEXEC
		392	# define EFD_CLOEXEC O_CLOEXEC
		393	# else
		394	# define EFD_CLOEXEC 02000000
		395	# endif
		396	# endif
344	# ifdef __cplusplus	397	# ifdef __cplusplus
345	extern "C" {	398	extern "C" {
346	# endif	399	# endif
347	int eventfd (unsigned int initval, int flags);	400	int eventfd (unsigned int initval, int flags);
348	# ifdef __cplusplus	401	# ifdef __cplusplus
349	}	402	}
350	# endif	403	# endif
351	#endif	404	#endif
		405
		406	#if EV_USE_SIGNALFD
		407	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		408	# include <stdint.h>
		409	# ifndef SFD_NONBLOCK
		410	# define SFD_NONBLOCK O_NONBLOCK
		411	# endif
		412	# ifndef SFD_CLOEXEC
		413	# ifdef O_CLOEXEC
		414	# define SFD_CLOEXEC O_CLOEXEC
		415	# else
		416	# define SFD_CLOEXEC 02000000
		417	# endif
		418	# endif
		419	# ifdef __cplusplus
		420	extern "C" {
		421	# endif
		422	int signalfd (int fd, const sigset_t *mask, int flags);
		423
		424	struct signalfd_siginfo
		425	{
		426	uint32_t ssi_signo;
		427	char pad[128 - sizeof (uint32_t)];
		428	};
		429	# ifdef __cplusplus
		430	}
		431	# endif
		432	#endif
		433
352		434
353	/**/	435	/**/
354		436
355	#if EV_VERIFY >= 3	437	#if EV_VERIFY >= 3
356	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)	438	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
…		…
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 nto 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	{
		1665	/ev_ref (EV_A);/
		1666	/ev_io_stop (EV_A_ &sigfd_w);/
		1667
		1668	close (sigfd);
		1669	}
		1670	#endif
1474		1671
1475	#if EV_USE_INOTIFY	1672	#if EV_USE_INOTIFY
1476	if (fs_fd >= 0)	1673	if (fs_fd >= 0)
1477	close (fs_fd);	1674	close (fs_fd);
1478	#endif	1675	#endif
…		…
1502	#if EV_IDLE_ENABLE	1699	#if EV_IDLE_ENABLE
1503	array_free (idle, [i]);	1700	array_free (idle, [i]);
1504	#endif	1701	#endif
1505	}	1702	}
1506		1703
1507	ev_free (anfds); anfdmax = 0;	1704	ev_free (anfds); anfds = 0; anfdmax = 0;
1508		1705
1509	/* have to use the microsoft-never-gets-it-right macro */	1706	/* have to use the microsoft-never-gets-it-right macro */
1510	array_free (rfeed, EMPTY);	1707	array_free (rfeed, EMPTY);
1511	array_free (fdchange, EMPTY);	1708	array_free (fdchange, EMPTY);
1512	array_free (timer, EMPTY);	1709	array_free (timer, EMPTY);
…		…
1547		1744
1548	if (ev_is_active (&pipe_w))	1745	if (ev_is_active (&pipe_w))
1549	{	1746	{
1550	/* this "locks" the handlers against writing to the pipe */	1747	/* this "locks" the handlers against writing to the pipe */
1551	/* while we modify the fd vars */	1748	/* while we modify the fd vars */
1552	gotsig = 1;	1749	sig_pending = 1;
1553	#if EV_ASYNC_ENABLE	1750	#if EV_ASYNC_ENABLE
1554	gotasync = 1;	1751	async_pending = 1;
1555	#endif	1752	#endif
1556		1753
1557	ev_ref (EV_A);	1754	ev_ref (EV_A);
1558	ev_io_stop (EV_A_ &pipe_w);	1755	ev_io_stop (EV_A_ &pipe_w);
1559		1756
…		…
1562	close (evfd);	1759	close (evfd);
1563	#endif	1760	#endif
1564		1761
1565	if (evpipe [0] >= 0)	1762	if (evpipe [0] >= 0)
1566	{	1763	{
1567	close (evpipe [0]);	1764	EV_WIN32_CLOSE_FD (evpipe [0]);
1568	close (evpipe [1]);	1765	EV_WIN32_CLOSE_FD (evpipe [1]);
1569	}	1766	}
1570		1767
1571	evpipe_init (EV_A);	1768	evpipe_init (EV_A);
1572	/* now iterate over everything, in case we missed something */	1769	/* now iterate over everything, in case we missed something */
1573	pipecb (EV_A_ &pipe_w, EV_READ);	1770	pipecb (EV_A_ &pipe_w, EV_READ);
…		…
1579	#if EV_MULTIPLICITY	1776	#if EV_MULTIPLICITY
1580		1777
1581	struct ev_loop *	1778	struct ev_loop *
1582	ev_loop_new (unsigned int flags)	1779	ev_loop_new (unsigned int flags)
1583	{	1780	{
1584	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));	1781	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1585		1782
1586	memset (loop, 0, sizeof (struct ev_loop));	1783	memset (EV_A, 0, sizeof (struct ev_loop));
1587
1588	loop_init (EV_A_ flags);	1784	loop_init (EV_A_ flags);
1589		1785
1590	if (ev_backend (EV_A))	1786	if (ev_backend (EV_A))
1591	return loop;	1787	return EV_A;
1592		1788
1593	return 0;	1789	return 0;
1594	}	1790	}
1595		1791
1596	void	1792	void
…		…
1603	void	1799	void
1604	ev_loop_fork (EV_P)	1800	ev_loop_fork (EV_P)
1605	{	1801	{
1606	postfork = 1; /* must be in line with ev_default_fork */	1802	postfork = 1; /* must be in line with ev_default_fork */
1607	}	1803	}
		1804	#endif /* multiplicity */
1608		1805
1609	#if EV_VERIFY	1806	#if EV_VERIFY
1610	static void noinline	1807	static void noinline
1611	verify_watcher (EV_P_ W w)	1808	verify_watcher (EV_P_ W w)
1612	{	1809	{
…		…
1640	verify_watcher (EV_A_ ws [cnt]);	1837	verify_watcher (EV_A_ ws [cnt]);
1641	}	1838	}
1642	}	1839	}
1643	#endif	1840	#endif
1644		1841
		1842	#if EV_MINIMAL < 2
1645	void	1843	void
1646	ev_loop_verify (EV_P)	1844	ev_loop_verify (EV_P)
1647	{	1845	{
1648	#if EV_VERIFY	1846	#if EV_VERIFY
1649	int i;	1847	int i;
…		…
1698	assert (checkmax >= checkcnt);	1896	assert (checkmax >= checkcnt);
1699	array_verify (EV_A_ (W *)checks, checkcnt);	1897	array_verify (EV_A_ (W *)checks, checkcnt);
1700		1898
1701	# if 0	1899	# if 0
1702	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	1900	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)	1901	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1704	# endif
1705	#endif	1902	# endif
		1903	#endif
1706	}	1904	}
1707		1905	#endif
1708	#endif /* multiplicity */
1709		1906
1710	#if EV_MULTIPLICITY	1907	#if EV_MULTIPLICITY
1711	struct ev_loop *	1908	struct ev_loop *
1712	ev_default_loop_init (unsigned int flags)	1909	ev_default_loop_init (unsigned int flags)
1713	#else	1910	#else
…		…
1716	#endif	1913	#endif
1717	{	1914	{
1718	if (!ev_default_loop_ptr)	1915	if (!ev_default_loop_ptr)
1719	{	1916	{
1720	#if EV_MULTIPLICITY	1917	#if EV_MULTIPLICITY
1721	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1918	EV_P = ev_default_loop_ptr = &default_loop_struct;
1722	#else	1919	#else
1723	ev_default_loop_ptr = 1;	1920	ev_default_loop_ptr = 1;
1724	#endif	1921	#endif
1725		1922
1726	loop_init (EV_A_ flags);	1923	loop_init (EV_A_ flags);
…		…
1743		1940
1744	void	1941	void
1745	ev_default_destroy (void)	1942	ev_default_destroy (void)
1746	{	1943	{
1747	#if EV_MULTIPLICITY	1944	#if EV_MULTIPLICITY
1748	struct ev_loop *loop = ev_default_loop_ptr;	1945	EV_P = ev_default_loop_ptr;
1749	#endif	1946	#endif
1750		1947
1751	ev_default_loop_ptr = 0;	1948	ev_default_loop_ptr = 0;
1752		1949
1753	#ifndef _WIN32	1950	#ifndef _WIN32
…		…
1760		1957
1761	void	1958	void
1762	ev_default_fork (void)	1959	ev_default_fork (void)
1763	{	1960	{
1764	#if EV_MULTIPLICITY	1961	#if EV_MULTIPLICITY
1765	struct ev_loop *loop = ev_default_loop_ptr;	1962	EV_P = ev_default_loop_ptr;
1766	#endif	1963	#endif
1767		1964
1768	postfork = 1; /* must be in line with ev_loop_fork */	1965	postfork = 1; /* must be in line with ev_loop_fork */
1769	}	1966	}
1770		1967
…		…
1774	ev_invoke (EV_P_ void *w, int revents)	1971	ev_invoke (EV_P_ void *w, int revents)
1775	{	1972	{
1776	EV_CB_INVOKE ((W)w, revents);	1973	EV_CB_INVOKE ((W)w, revents);
1777	}	1974	}
1778		1975
1779	inline_speed void	1976	unsigned int
1780	call_pending (EV_P)	1977	ev_pending_count (EV_P)
		1978	{
		1979	int pri;
		1980	unsigned int count = 0;
		1981
		1982	for (pri = NUMPRI; pri--; )
		1983	count += pendingcnt [pri];
		1984
		1985	return count;
		1986	}
		1987
		1988	void noinline
		1989	ev_invoke_pending (EV_P)
1781	{	1990	{
1782	int pri;	1991	int pri;
1783		1992
1784	for (pri = NUMPRI; pri--; )	1993	for (pri = NUMPRI; pri--; )
1785	while (pendingcnt [pri])	1994	while (pendingcnt [pri])
…		…
2020		2229
2021	mn_now = ev_rt_now;	2230	mn_now = ev_rt_now;
2022	}	2231	}
2023	}	2232	}
2024		2233
2025	static int loop_done;
2026
2027	void	2234	void
2028	ev_loop (EV_P_ int flags)	2235	ev_loop (EV_P_ int flags)
2029	{	2236	{
		2237	#if EV_MINIMAL < 2
		2238	++loop_depth;
		2239	#endif
		2240
		2241	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2242
2030	loop_done = EVUNLOOP_CANCEL;	2243	loop_done = EVUNLOOP_CANCEL;
2031		2244
2032	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2245	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2033		2246
2034	do	2247	do
2035	{	2248	{
2036	#if EV_VERIFY >= 2	2249	#if EV_VERIFY >= 2
2037	ev_loop_verify (EV_A);	2250	ev_loop_verify (EV_A);
…		…
2050	/* we might have forked, so queue fork handlers */	2263	/* we might have forked, so queue fork handlers */
2051	if (expect_false (postfork))	2264	if (expect_false (postfork))
2052	if (forkcnt)	2265	if (forkcnt)
2053	{	2266	{
2054	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2267	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2055	call_pending (EV_A);	2268	EV_INVOKE_PENDING;
2056	}	2269	}
2057	#endif	2270	#endif
2058		2271
2059	/* queue prepare watchers (and execute them) */	2272	/* queue prepare watchers (and execute them) */
2060	if (expect_false (preparecnt))	2273	if (expect_false (preparecnt))
2061	{	2274	{
2062	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2275	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2063	call_pending (EV_A);	2276	EV_INVOKE_PENDING;
2064	}	2277	}
		2278
		2279	if (expect_false (loop_done))
		2280	break;
2065		2281
2066	/* we might have forked, so reify kernel state if necessary */	2282	/* we might have forked, so reify kernel state if necessary */
2067	if (expect_false (postfork))	2283	if (expect_false (postfork))
2068	loop_fork (EV_A);	2284	loop_fork (EV_A);
2069		2285
…		…
2075	ev_tstamp waittime = 0.;	2291	ev_tstamp waittime = 0.;
2076	ev_tstamp sleeptime = 0.;	2292	ev_tstamp sleeptime = 0.;
2077		2293
2078	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))	2294	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))
2079	{	2295	{
		2296	/* remember old timestamp for io_blocktime calculation */
		2297	ev_tstamp prev_mn_now = mn_now;
		2298
2080	/* update time to cancel out callback processing overhead */	2299	/* update time to cancel out callback processing overhead */
2081	time_update (EV_A_ 1e100);	2300	time_update (EV_A_ 1e100);
2082		2301
2083	waittime = MAX_BLOCKTIME;	2302	waittime = MAX_BLOCKTIME;
2084		2303
…		…
2094	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2313	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
2095	if (waittime > to) waittime = to;	2314	if (waittime > to) waittime = to;
2096	}	2315	}
2097	#endif	2316	#endif
2098		2317
		2318	/* don't let timeouts decrease the waittime below timeout_blocktime */
2099	if (expect_false (waittime < timeout_blocktime))	2319	if (expect_false (waittime < timeout_blocktime))
2100	waittime = timeout_blocktime;	2320	waittime = timeout_blocktime;
2101		2321
2102	sleeptime = waittime - backend_fudge;	2322	/* extra check because io_blocktime is commonly 0 */
2103
2104	if (expect_true (sleeptime > io_blocktime))	2323	if (expect_false (io_blocktime))
2105	sleeptime = io_blocktime;
2106
2107	if (sleeptime)
2108	{	2324	{
		2325	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2326
		2327	if (sleeptime > waittime - backend_fudge)
		2328	sleeptime = waittime - backend_fudge;
		2329
		2330	if (expect_true (sleeptime > 0.))
		2331	{
2109	ev_sleep (sleeptime);	2332	ev_sleep (sleeptime);
2110	waittime -= sleeptime;	2333	waittime -= sleeptime;
		2334	}
2111	}	2335	}
2112	}	2336	}
2113		2337
		2338	#if EV_MINIMAL < 2
2114	++loop_count;	2339	++loop_count;
		2340	#endif
		2341	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2115	backend_poll (EV_A_ waittime);	2342	backend_poll (EV_A_ waittime);
		2343	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2116		2344
2117	/* update ev_rt_now, do magic */	2345	/* update ev_rt_now, do magic */
2118	time_update (EV_A_ waittime + sleeptime);	2346	time_update (EV_A_ waittime + sleeptime);
2119	}	2347	}
2120		2348
…		…
2131		2359
2132	/* queue check watchers, to be executed first */	2360	/* queue check watchers, to be executed first */
2133	if (expect_false (checkcnt))	2361	if (expect_false (checkcnt))
2134	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2362	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2135		2363
2136	call_pending (EV_A);	2364	EV_INVOKE_PENDING;
2137	}	2365	}
2138	while (expect_true (	2366	while (expect_true (
2139	activecnt	2367	activecnt
2140	&& !loop_done	2368	&& !loop_done
2141	&& !(flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK))	2369	&& !(flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK))
2142	));	2370	));
2143		2371
2144	if (loop_done == EVUNLOOP_ONE)	2372	if (loop_done == EVUNLOOP_ONE)
2145	loop_done = EVUNLOOP_CANCEL;	2373	loop_done = EVUNLOOP_CANCEL;
		2374
		2375	#if EV_MINIMAL < 2
		2376	--loop_depth;
		2377	#endif
2146	}	2378	}
2147		2379
2148	void	2380	void
2149	ev_unloop (EV_P_ int how)	2381	ev_unloop (EV_P_ int how)
2150	{	2382	{
…		…
2201	inline_size void	2433	inline_size void
2202	wlist_del (WL *head, WL elem)	2434	wlist_del (WL *head, WL elem)
2203	{	2435	{
2204	while (*head)	2436	while (*head)
2205	{	2437	{
2206	if (*head == elem)	2438	if (expect_true (*head == elem))
2207	{	2439	{
2208	*head = elem->next;	2440	*head = elem->next;
2209	return;	2441	break;
2210	}	2442	}
2211		2443
2212	head = &(*head)->next;	2444	head = &(*head)->next;
2213	}	2445	}
2214	}	2446	}
…		…
2242	}	2474	}
2243		2475
2244	inline_size void	2476	inline_size void
2245	pri_adjust (EV_P_ W w)	2477	pri_adjust (EV_P_ W w)
2246	{	2478	{
2247	int pri = w->priority;	2479	int pri = ev_priority (w);
2248	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2480	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2249	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2481	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2250	w->priority = pri;	2482	ev_set_priority (w, pri);
2251	}	2483	}
2252		2484
2253	inline_speed void	2485	inline_speed void
2254	ev_start (EV_P_ W w, int active)	2486	ev_start (EV_P_ W w, int active)
2255	{	2487	{
…		…
2282		2514
2283	ev_start (EV_A_ (W)w, 1);	2515	ev_start (EV_A_ (W)w, 1);
2284	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2516	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2285	wlist_add (&anfds[fd].head, (WL)w);	2517	wlist_add (&anfds[fd].head, (WL)w);
2286		2518
2287	fd_change (EV_A_ fd, w->events & EV__IOFDSET \| 1);	2519	fd_change (EV_A_ fd, w->events & EV__IOFDSET \| EV_ANFD_REIFY);
2288	w->events &= ~EV__IOFDSET;	2520	w->events &= ~EV__IOFDSET;
2289		2521
2290	EV_FREQUENT_CHECK;	2522	EV_FREQUENT_CHECK;
2291	}	2523	}
2292		2524
…		…
2386	}	2618	}
2387		2619
2388	EV_FREQUENT_CHECK;	2620	EV_FREQUENT_CHECK;
2389	}	2621	}
2390		2622
		2623	ev_tstamp
		2624	ev_timer_remaining (EV_P_ ev_timer *w)
		2625	{
		2626	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
		2627	}
		2628
2391	#if EV_PERIODIC_ENABLE	2629	#if EV_PERIODIC_ENABLE
2392	void noinline	2630	void noinline
2393	ev_periodic_start (EV_P_ ev_periodic *w)	2631	ev_periodic_start (EV_P_ ev_periodic *w)
2394	{	2632	{
2395	if (expect_false (ev_is_active (w)))	2633	if (expect_false (ev_is_active (w)))
…		…
2462	#endif	2700	#endif
2463		2701
2464	void noinline	2702	void noinline
2465	ev_signal_start (EV_P_ ev_signal *w)	2703	ev_signal_start (EV_P_ ev_signal *w)
2466	{	2704	{
2467	#if EV_MULTIPLICITY
2468	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2469	#endif
2470	if (expect_false (ev_is_active (w)))	2705	if (expect_false (ev_is_active (w)))
2471	return;	2706	return;
2472		2707
2473	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));	2708	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2474		2709
2475	evpipe_init (EV_A);	2710	#if EV_MULTIPLICITY
		2711	assert (("libev: a signal must not be attached to two different loops",
		2712	!signals [w->signum - 1].loop \|\| signals [w->signum - 1].loop == loop));
2476		2713
2477	EV_FREQUENT_CHECK;	2714	signals [w->signum - 1].loop = EV_A;
		2715	#endif
2478		2716
		2717	EV_FREQUENT_CHECK;
		2718
		2719	#if EV_USE_SIGNALFD
		2720	if (sigfd == -2)
2479	{	2721	{
2480	#ifndef _WIN32	2722	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK \| SFD_CLOEXEC);
2481	sigset_t full, prev;	2723	if (sigfd < 0 && errno == EINVAL)
2482	sigfillset (&full);	2724	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2483	sigprocmask (SIG_SETMASK, &full, &prev);
2484	#endif
2485		2725
2486	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);	2726	if (sigfd >= 0)
		2727	{
		2728	fd_intern (sigfd); /* doing it twice will not hurt */
2487		2729
2488	#ifndef _WIN32	2730	sigemptyset (&sigfd_set);
2489	sigprocmask (SIG_SETMASK, &prev, 0);	2731
2490	#endif	2732	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2733	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2734	ev_io_start (EV_A_ &sigfd_w);
		2735	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2736	}
2491	}	2737	}
		2738
		2739	if (sigfd >= 0)
		2740	{
		2741	/* TODO: check .head */
		2742	sigaddset (&sigfd_set, w->signum);
		2743	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2744
		2745	signalfd (sigfd, &sigfd_set, 0);
		2746	}
		2747	#endif
2492		2748
2493	ev_start (EV_A_ (W)w, 1);	2749	ev_start (EV_A_ (W)w, 1);
2494	wlist_add (&signals [w->signum - 1].head, (WL)w);	2750	wlist_add (&signals [w->signum - 1].head, (WL)w);
2495		2751
2496	if (!((WL)w)->next)	2752	if (!((WL)w)->next)
		2753	# if EV_USE_SIGNALFD
		2754	if (sigfd < 0) /TODO/
		2755	# endif
2497	{	2756	{
2498	#if _WIN32	2757	# if _WIN32
2499	signal (w->signum, ev_sighandler);	2758	signal (w->signum, ev_sighandler);
2500	#else	2759	# else
2501	struct sigaction sa;	2760	struct sigaction sa;
		2761
		2762	evpipe_init (EV_A);
		2763
2502	sa.sa_handler = ev_sighandler;	2764	sa.sa_handler = ev_sighandler;
2503	sigfillset (&sa.sa_mask);	2765	sigfillset (&sa.sa_mask);
2504	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2766	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2505	sigaction (w->signum, &sa, 0);	2767	sigaction (w->signum, &sa, 0);
		2768
		2769	sigemptyset (&sa.sa_mask);
		2770	sigaddset (&sa.sa_mask, w->signum);
		2771	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2506	#endif	2772	#endif
2507	}	2773	}
2508		2774
2509	EV_FREQUENT_CHECK;	2775	EV_FREQUENT_CHECK;
2510	}	2776	}
2511		2777
2512	void noinline	2778	void noinline
…		…
2520		2786
2521	wlist_del (&signals [w->signum - 1].head, (WL)w);	2787	wlist_del (&signals [w->signum - 1].head, (WL)w);
2522	ev_stop (EV_A_ (W)w);	2788	ev_stop (EV_A_ (W)w);
2523		2789
2524	if (!signals [w->signum - 1].head)	2790	if (!signals [w->signum - 1].head)
		2791	{
		2792	#if EV_MULTIPLICITY
		2793	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2794	#endif
		2795	#if EV_USE_SIGNALFD
		2796	if (sigfd >= 0)
		2797	{
		2798	sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D
		2799	sigdelset (&sigfd_set, w->signum);
		2800	signalfd (sigfd, &sigfd_set, 0);
		2801	sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D
		2802	/TODO: maybe unblock signal? /
		2803	}
		2804	else
		2805	#endif
2525	signal (w->signum, SIG_DFL);	2806	signal (w->signum, SIG_DFL);
		2807	}
2526		2808
2527	EV_FREQUENT_CHECK;	2809	EV_FREQUENT_CHECK;
2528	}	2810	}
2529		2811
2530	void	2812	void
…		…
2610	}	2892	}
2611	}	2893	}
2612		2894
2613	if (w->wd >= 0)	2895	if (w->wd >= 0)
2614	{	2896	{
		2897	struct statfs sfs;
		2898
2615	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2899	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2616		2900
2617	/* now local changes will be tracked by inotify, but remote changes won't */	2901	/* now local changes will be tracked by inotify, but remote changes won't */
2618	/* unless the filesystem it known to be local, we therefore still poll */	2902	/* unless the filesystem it known to be local, we therefore still poll */
2619	/* also do poll on <2.6.25, but with normal frequency */	2903	/* also do poll on <2.6.25, but with normal frequency */
2620	struct statfs sfs;
2621		2904
2622	if (fs_2625 && !statfs (w->path, &sfs))	2905	if (fs_2625 && !statfs (w->path, &sfs))
2623	if (sfs.f_type == 0x1373 /* devfs */	2906	if (sfs.f_type == 0x1373 /* devfs */
2624	\|\| sfs.f_type == 0xEF53 /* ext2/3 */	2907	\|\| sfs.f_type == 0xEF53 /* ext2/3 */
2625	\|\| sfs.f_type == 0x3153464a /* jfs */	2908	\|\| sfs.f_type == 0x3153464a /* jfs */
…		…
3010	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3293	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3011	{	3294	{
3012	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));	3295	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
3013		3296
3014	{	3297	{
3015	struct ev_loop *loop = w->other;	3298	EV_P = w->other;
3016		3299
3017	while (fdchangecnt)	3300	while (fdchangecnt)
3018	{	3301	{
3019	fd_reify (EV_A);	3302	fd_reify (EV_A);
3020	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3303	ev_loop (EV_A_ EVLOOP_NONBLOCK);
…		…
3028	ev_embed w = (ev_embed )(((char *)fork_w) - offsetof (ev_embed, fork));	3311	ev_embed w = (ev_embed )(((char *)fork_w) - offsetof (ev_embed, fork));
3029		3312
3030	ev_embed_stop (EV_A_ w);	3313	ev_embed_stop (EV_A_ w);
3031		3314
3032	{	3315	{
3033	struct ev_loop *loop = w->other;	3316	EV_P = w->other;
3034		3317
3035	ev_loop_fork (EV_A);	3318	ev_loop_fork (EV_A);
3036	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3319	ev_loop (EV_A_ EVLOOP_NONBLOCK);
3037	}	3320	}
3038		3321
…		…
3052	{	3335	{
3053	if (expect_false (ev_is_active (w)))	3336	if (expect_false (ev_is_active (w)))
3054	return;	3337	return;
3055		3338
3056	{	3339	{
3057	struct ev_loop *loop = w->other;	3340	EV_P = w->other;
3058	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3341	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3059	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3342	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3060	}	3343	}
3061		3344
3062	EV_FREQUENT_CHECK;	3345	EV_FREQUENT_CHECK;
…		…
3174		3457
3175	void	3458	void
3176	ev_async_send (EV_P_ ev_async *w)	3459	ev_async_send (EV_P_ ev_async *w)
3177	{	3460	{
3178	w->sent = 1;	3461	w->sent = 1;
3179	evpipe_write (EV_A_ &gotasync);	3462	evpipe_write (EV_A_ &async_pending);
3180	}	3463	}
3181	#endif	3464	#endif
3182		3465
3183	/*****************************************************************************/	3466	/*****************************************************************************/
3184		3467
…		…
3333	if (types & EV_CHECK)	3616	if (types & EV_CHECK)
3334	for (i = checkcnt; i--; )	3617	for (i = checkcnt; i--; )
3335	cb (EV_A_ EV_CHECK, checks [i]);	3618	cb (EV_A_ EV_CHECK, checks [i]);
3336		3619
3337	if (types & EV_SIGNAL)	3620	if (types & EV_SIGNAL)
3338	for (i = 0; i < signalmax; ++i)	3621	for (i = 0; i < EV_NSIG - 1; ++i)
3339	for (wl = signals [i].head; wl; )	3622	for (wl = signals [i].head; wl; )
3340	{	3623	{
3341	wn = wl->next;	3624	wn = wl->next;
3342	cb (EV_A_ EV_SIGNAL, wl);	3625	cb (EV_A_ EV_SIGNAL, wl);
3343	wl = wn;	3626	wl = wn;

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Comparing libev/ev.c (file contents): Revision 1.292 by root, Mon Jun 29 07:22:56 2009 UTC vs. Revision 1.314 by root, Wed Aug 26 17:31:20 2009 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.292 by root, Mon Jun 29 07:22:56 2009 UTC vs.
Revision 1.314 by root, Wed Aug 26 17:31:20 2009 UTC