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

Comparing libev/ev.c (file contents):
Revision 1.288 by root, Sat Apr 25 14:12:48 2009 UTC vs.
Revision 1.312 by root, Wed Aug 12 18:48:17 2009 UTC

…		…
57	# endif	57	# endif
58	# ifndef EV_USE_MONOTONIC	58	# ifndef EV_USE_MONOTONIC
59	# define EV_USE_MONOTONIC 1	59	# define EV_USE_MONOTONIC 1
60	# endif	60	# endif
61	# endif	61	# endif
		62	# elif !defined(EV_USE_CLOCK_SYSCALL)
		63	# define EV_USE_CLOCK_SYSCALL 0
62	# endif	64	# endif
63		65
64	# if HAVE_CLOCK_GETTIME	66	# if HAVE_CLOCK_GETTIME
65	# ifndef EV_USE_MONOTONIC	67	# ifndef EV_USE_MONOTONIC
66	# define EV_USE_MONOTONIC 1	68	# define EV_USE_MONOTONIC 1
…		…
131	# else	133	# else
132	# define EV_USE_INOTIFY 0	134	# define EV_USE_INOTIFY 0
133	# endif	135	# endif
134	# endif	136	# endif
135		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
136	# ifndef EV_USE_EVENTFD	146	# ifndef EV_USE_EVENTFD
137	# if HAVE_EVENTFD	147	# if HAVE_EVENTFD
138	# define EV_USE_EVENTFD 1	148	# define EV_USE_EVENTFD 1
139	# else	149	# else
140	# define EV_USE_EVENTFD 0	150	# define EV_USE_EVENTFD 0
…		…
176	# endif	186	# endif
177	#endif	187	#endif
178		188
179	/* 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 */
180		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
181	#ifndef EV_USE_CLOCK_SYSCALL	218	#ifndef EV_USE_CLOCK_SYSCALL
182	# if __linux && __GLIBC__ >= 2	219	# if __linux && __GLIBC__ >= 2
183	# define EV_USE_CLOCK_SYSCALL 1	220	# define EV_USE_CLOCK_SYSCALL 1
184	# else	221	# else
185	# define EV_USE_CLOCK_SYSCALL 0	222	# define EV_USE_CLOCK_SYSCALL 0
…		…
264	# else	301	# else
265	# define EV_USE_EVENTFD 0	302	# define EV_USE_EVENTFD 0
266	# endif	303	# endif
267	#endif	304	#endif
268		305
		306	#ifndef EV_USE_SIGNALFD
		307	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9))
		308	# define EV_USE_SIGNALFD 1
		309	# else
		310	# define EV_USE_SIGNALFD 0
		311	# endif
		312	#endif
		313
269	#if 0 /* debugging */	314	#if 0 /* debugging */
270	# define EV_VERIFY 3	315	# define EV_VERIFY 3
271	# define EV_USE_4HEAP 1	316	# define EV_USE_4HEAP 1
272	# define EV_HEAP_CACHE_AT 1	317	# define EV_HEAP_CACHE_AT 1
273	#endif	318	#endif
…		…
280	# define EV_USE_4HEAP !EV_MINIMAL	325	# define EV_USE_4HEAP !EV_MINIMAL
281	#endif	326	#endif
282		327
283	#ifndef EV_HEAP_CACHE_AT	328	#ifndef EV_HEAP_CACHE_AT
284	# define EV_HEAP_CACHE_AT !EV_MINIMAL	329	# define EV_HEAP_CACHE_AT !EV_MINIMAL
		330	#endif
		331
		332	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		333	/* which makes programs even slower. might work on other unices, too. */
		334	#if EV_USE_CLOCK_SYSCALL
		335	# include <syscall.h>
		336	# ifdef SYS_clock_gettime
		337	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		338	# undef EV_USE_MONOTONIC
		339	# define EV_USE_MONOTONIC 1
		340	# else
		341	# undef EV_USE_CLOCK_SYSCALL
		342	# define EV_USE_CLOCK_SYSCALL 0
		343	# endif
285	#endif	344	#endif
286		345
287	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	346	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
288		347
289	#ifndef CLOCK_MONOTONIC	348	#ifndef CLOCK_MONOTONIC
…		…
320		379
321	#if EV_SELECT_IS_WINSOCKET	380	#if EV_SELECT_IS_WINSOCKET
322	# include <winsock.h>	381	# include <winsock.h>
323	#endif	382	#endif
324		383
325	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
326	/* which makes programs even slower. might work on other unices, too. */
327	#if EV_USE_CLOCK_SYSCALL
328	# include <syscall.h>
329	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
330	# undef EV_USE_MONOTONIC
331	# define EV_USE_MONOTONIC 1
332	#endif
333
334	#if EV_USE_EVENTFD	384	#if EV_USE_EVENTFD
335	/* 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 */
336	# 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
337	# ifdef __cplusplus	397	# ifdef __cplusplus
338	extern "C" {	398	extern "C" {
339	# endif	399	# endif
340	int eventfd (unsigned int initval, int flags);	400	int eventfd (unsigned int initval, int flags);
341	# ifdef __cplusplus	401	# ifdef __cplusplus
342	}	402	}
343	# endif	403	# endif
		404	#endif
		405
		406	#if EV_USE_SIGNALFD
		407	# include <sys/signalfd.h>
344	#endif	408	#endif
345		409
346	/**/	410	/**/
347		411
348	#if EV_VERIFY >= 3	412	#if EV_VERIFY >= 3
…		…
384	# define inline_speed static noinline	448	# define inline_speed static noinline
385	#else	449	#else
386	# define inline_speed static inline	450	# define inline_speed static inline
387	#endif	451	#endif
388		452
389	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	453	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		454
		455	#if EV_MINPRI == EV_MAXPRI
		456	# define ABSPRI(w) (((W)w), 0)
		457	#else
390	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	458	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		459	#endif
391		460
392	#define EMPTY /* required for microsofts broken pseudo-c compiler */	461	#define EMPTY /* required for microsofts broken pseudo-c compiler */
393	#define EMPTY2(a,b) /* used to suppress some warnings */	462	#define EMPTY2(a,b) /* used to suppress some warnings */
394		463
395	typedef ev_watcher *W;	464	typedef ev_watcher *W;
…		…
478	#define ev_malloc(size) ev_realloc (0, (size))	547	#define ev_malloc(size) ev_realloc (0, (size))
479	#define ev_free(ptr) ev_realloc ((ptr), 0)	548	#define ev_free(ptr) ev_realloc ((ptr), 0)
480		549
481	/*****************************************************************************/	550	/*****************************************************************************/
482		551
		552	/* set in reify when reification needed */
		553	#define EV_ANFD_REIFY 1
		554
483	/* file descriptor info structure */	555	/* file descriptor info structure */
484	typedef struct	556	typedef struct
485	{	557	{
486	WL head;	558	WL head;
487	unsigned char events; /* the events watched for */	559	unsigned char events; /* the events watched for */
488	unsigned char reify; /* flag set when this ANFD needs reification */	560	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
489	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */	561	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
490	unsigned char unused;	562	unsigned char unused;
491	#if EV_USE_EPOLL	563	#if EV_USE_EPOLL
492	unsigned int egen; /* generation counter to counter epoll bugs */	564	unsigned int egen; /* generation counter to counter epoll bugs */
493	#endif	565	#endif
…		…
555		627
556	static int ev_default_loop_ptr;	628	static int ev_default_loop_ptr;
557		629
558	#endif	630	#endif
559		631
		632	#if EV_MINIMAL < 2
		633	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		634	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		635	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		636	#else
		637	# define EV_RELEASE_CB (void)0
		638	# define EV_ACQUIRE_CB (void)0
		639	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		640	#endif
		641
		642	#define EVUNLOOP_RECURSE 0x80
		643
560	/*****************************************************************************/	644	/*****************************************************************************/
561		645
		646	#ifndef EV_HAVE_EV_TIME
562	ev_tstamp	647	ev_tstamp
563	ev_time (void)	648	ev_time (void)
564	{	649	{
565	#if EV_USE_REALTIME	650	#if EV_USE_REALTIME
566	if (expect_true (have_realtime))	651	if (expect_true (have_realtime))
…		…
573		658
574	struct timeval tv;	659	struct timeval tv;
575	gettimeofday (&tv, 0);	660	gettimeofday (&tv, 0);
576	return tv.tv_sec + tv.tv_usec * 1e-6;	661	return tv.tv_sec + tv.tv_usec * 1e-6;
577	}	662	}
		663	#endif
578		664
579	inline_size ev_tstamp	665	inline_size ev_tstamp
580	get_clock (void)	666	get_clock (void)
581	{	667	{
582	#if EV_USE_MONOTONIC	668	#if EV_USE_MONOTONIC
…		…
618		704
619	tv.tv_sec = (time_t)delay;	705	tv.tv_sec = (time_t)delay;
620	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	706	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
621		707
622	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */	708	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
623	/* somehting nto guaranteed by newer posix versions, but guaranteed */	709	/* something not guaranteed by newer posix versions, but guaranteed */
624	/* by older ones */	710	/* by older ones */
625	select (0, 0, 0, 0, &tv);	711	select (0, 0, 0, 0, &tv);
626	#endif	712	#endif
627	}	713	}
628	}	714	}
…		…
736	}	822	}
737		823
738	/*****************************************************************************/	824	/*****************************************************************************/
739		825
740	inline_speed void	826	inline_speed void
741	fd_event (EV_P_ int fd, int revents)	827	fd_event_nc (EV_P_ int fd, int revents)
742	{	828	{
743	ANFD *anfd = anfds + fd;	829	ANFD *anfd = anfds + fd;
744	ev_io *w;	830	ev_io *w;
745		831
746	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)	832	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
…		…
750	if (ev)	836	if (ev)
751	ev_feed_event (EV_A_ (W)w, ev);	837	ev_feed_event (EV_A_ (W)w, ev);
752	}	838	}
753	}	839	}
754		840
		841	/* do not submit kernel events for fds that have reify set */
		842	/* because that means they changed while we were polling for new events */
		843	inline_speed void
		844	fd_event (EV_P_ int fd, int revents)
		845	{
		846	ANFD *anfd = anfds + fd;
		847
		848	if (expect_true (!anfd->reify))
		849	fd_event_nc (EV_A_ fd, revents);
		850	}
		851
755	void	852	void
756	ev_feed_fd_event (EV_P_ int fd, int revents)	853	ev_feed_fd_event (EV_P_ int fd, int revents)
757	{	854	{
758	if (fd >= 0 && fd < anfdmax)	855	if (fd >= 0 && fd < anfdmax)
759	fd_event (EV_A_ fd, revents);	856	fd_event_nc (EV_A_ fd, revents);
760	}	857	}
761		858
762	/* make sure the external fd watch events are in-sync */	859	/* make sure the external fd watch events are in-sync */
763	/* with the kernel/libev internal state */	860	/* with the kernel/libev internal state */
764	inline_size void	861	inline_size void
…		…
864		961
865	for (fd = anfdmax; fd--; )	962	for (fd = anfdmax; fd--; )
866	if (anfds [fd].events)	963	if (anfds [fd].events)
867	{	964	{
868	fd_kill (EV_A_ fd);	965	fd_kill (EV_A_ fd);
869	return;	966	break;
870	}	967	}
871	}	968	}
872		969
873	/* usually called after fork if backend needs to re-arm all fds from scratch */	970	/* usually called after fork if backend needs to re-arm all fds from scratch */
874	static void noinline	971	static void noinline
…		…
879	for (fd = 0; fd < anfdmax; ++fd)	976	for (fd = 0; fd < anfdmax; ++fd)
880	if (anfds [fd].events)	977	if (anfds [fd].events)
881	{	978	{
882	anfds [fd].events = 0;	979	anfds [fd].events = 0;
883	anfds [fd].emask = 0;	980	anfds [fd].emask = 0;
884	fd_change (EV_A_ fd, EV__IOFDSET \| 1);	981	fd_change (EV_A_ fd, EV__IOFDSET \| EV_ANFD_REIFY);
885	}	982	}
886	}	983	}
887		984
888	/*****************************************************************************/	985	/*****************************************************************************/
889		986
…		…
964		1061
965	for (;;)	1062	for (;;)
966	{	1063	{
967	int c = k << 1;	1064	int c = k << 1;
968		1065
969	if (c > N + HEAP0 - 1)	1066	if (c >= N + HEAP0)
970	break;	1067	break;
971		1068
972	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])	1069	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
973	? 1 : 0;	1070	? 1 : 0;
974		1071
…		…
1010		1107
1011	/* move an element suitably so it is in a correct place */	1108	/* move an element suitably so it is in a correct place */
1012	inline_size void	1109	inline_size void
1013	adjustheap (ANHE *heap, int N, int k)	1110	adjustheap (ANHE *heap, int N, int k)
1014	{	1111	{
1015	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1112	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1016	upheap (heap, k);	1113	upheap (heap, k);
1017	else	1114	else
1018	downheap (heap, N, k);	1115	downheap (heap, N, k);
1019	}	1116	}
1020		1117
…		…
1033	/*****************************************************************************/	1130	/*****************************************************************************/
1034		1131
1035	/* associate signal watchers to a signal signal */	1132	/* associate signal watchers to a signal signal */
1036	typedef struct	1133	typedef struct
1037	{	1134	{
		1135	EV_ATOMIC_T pending;
		1136	#if EV_MULTIPLICITY
		1137	EV_P;
		1138	#endif
1038	WL head;	1139	WL head;
1039	EV_ATOMIC_T gotsig;
1040	} ANSIG;	1140	} ANSIG;
1041		1141
1042	static ANSIG *signals;	1142	static ANSIG signals [EV_NSIG - 1];
1043	static int signalmax;
1044
1045	static EV_ATOMIC_T gotsig;
1046		1143
1047	/*****************************************************************************/	1144	/*****************************************************************************/
1048		1145
1049	/* used to prepare libev internal fd's */	1146	/* used to prepare libev internal fd's */
1050	/* this is not fork-safe */	1147	/* this is not fork-safe */
…		…
1064	evpipe_init (EV_P)	1161	evpipe_init (EV_P)
1065	{	1162	{
1066	if (!ev_is_active (&pipe_w))	1163	if (!ev_is_active (&pipe_w))
1067	{	1164	{
1068	#if EV_USE_EVENTFD	1165	#if EV_USE_EVENTFD
		1166	evfd = eventfd (0, EFD_NONBLOCK \| EFD_CLOEXEC);
		1167	if (evfd < 0 && errno == EINVAL)
1069	if ((evfd = eventfd (0, 0)) >= 0)	1168	evfd = eventfd (0, 0);
		1169
		1170	if (evfd >= 0)
1070	{	1171	{
1071	evpipe [0] = -1;	1172	evpipe [0] = -1;
1072	fd_intern (evfd);	1173	fd_intern (evfd); /* doing it twice doesn't hurt */
1073	ev_io_set (&pipe_w, evfd, EV_READ);	1174	ev_io_set (&pipe_w, evfd, EV_READ);
1074	}	1175	}
1075	else	1176	else
1076	#endif	1177	#endif
1077	{	1178	{
…		…
1114	/* called whenever the libev signal pipe */	1215	/* called whenever the libev signal pipe */
1115	/* got some events (signal, async) */	1216	/* got some events (signal, async) */
1116	static void	1217	static void
1117	pipecb (EV_P_ ev_io *iow, int revents)	1218	pipecb (EV_P_ ev_io *iow, int revents)
1118	{	1219	{
		1220	int i;
		1221
1119	#if EV_USE_EVENTFD	1222	#if EV_USE_EVENTFD
1120	if (evfd >= 0)	1223	if (evfd >= 0)
1121	{	1224	{
1122	uint64_t counter;	1225	uint64_t counter;
1123	read (evfd, &counter, sizeof (uint64_t));	1226	read (evfd, &counter, sizeof (uint64_t));
…		…
1127	{	1230	{
1128	char dummy;	1231	char dummy;
1129	read (evpipe [0], &dummy, 1);	1232	read (evpipe [0], &dummy, 1);
1130	}	1233	}
1131		1234
1132	if (gotsig && ev_is_default_loop (EV_A))	1235	if (sig_pending)
1133	{	1236	{
1134	int signum;	1237	sig_pending = 0;
1135	gotsig = 0;
1136		1238
1137	for (signum = signalmax; signum--; )	1239	for (i = EV_NSIG - 1; i--; )
1138	if (signals [signum].gotsig)	1240	if (expect_false (signals [i].pending))
1139	ev_feed_signal_event (EV_A_ signum + 1);	1241	ev_feed_signal_event (EV_A_ i + 1);
1140	}	1242	}
1141		1243
1142	#if EV_ASYNC_ENABLE	1244	#if EV_ASYNC_ENABLE
1143	if (gotasync)	1245	if (async_pending)
1144	{	1246	{
1145	int i;	1247	async_pending = 0;
1146	gotasync = 0;
1147		1248
1148	for (i = asynccnt; i--; )	1249	for (i = asynccnt; i--; )
1149	if (asyncs [i]->sent)	1250	if (asyncs [i]->sent)
1150	{	1251	{
1151	asyncs [i]->sent = 0;	1252	asyncs [i]->sent = 0;
…		…
1159		1260
1160	static void	1261	static void
1161	ev_sighandler (int signum)	1262	ev_sighandler (int signum)
1162	{	1263	{
1163	#if EV_MULTIPLICITY	1264	#if EV_MULTIPLICITY
1164	struct ev_loop *loop = &default_loop_struct;	1265	EV_P = signals [signum - 1].loop;
1165	#endif	1266	#endif
1166		1267
1167	#if _WIN32	1268	#if _WIN32
1168	signal (signum, ev_sighandler);	1269	signal (signum, ev_sighandler);
1169	#endif	1270	#endif
1170		1271
1171	signals [signum - 1].gotsig = 1;	1272	signals [signum - 1].pending = 1;
1172	evpipe_write (EV_A_ &gotsig);	1273	evpipe_write (EV_A_ &sig_pending);
1173	}	1274	}
1174		1275
1175	void noinline	1276	void noinline
1176	ev_feed_signal_event (EV_P_ int signum)	1277	ev_feed_signal_event (EV_P_ int signum)
1177	{	1278	{
1178	WL w;	1279	WL w;
1179		1280
		1281	if (expect_false (signum <= 0 \|\| signum > EV_NSIG))
		1282	return;
		1283
		1284	--signum;
		1285
1180	#if EV_MULTIPLICITY	1286	#if EV_MULTIPLICITY
1181	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1287	/* it is permissible to try to feed a signal to the wrong loop */
1182	#endif	1288	/* or, likely more useful, feeding a signal nobody is waiting for */
1183		1289
1184	--signum;	1290	if (expect_false (signals [signum].loop != EV_A))
1185
1186	if (signum < 0 \|\| signum >= signalmax)
1187	return;	1291	return;
		1292	#endif
1188		1293
1189	signals [signum].gotsig = 0;	1294	signals [signum].pending = 0;
1190		1295
1191	for (w = signals [signum].head; w; w = w->next)	1296	for (w = signals [signum].head; w; w = w->next)
1192	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1297	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1193	}	1298	}
		1299
		1300	#if EV_USE_SIGNALFD
		1301	static void
		1302	sigfdcb (EV_P_ ev_io *iow, int revents)
		1303	{
		1304	struct signalfd_siginfo si[2], sip; / these structs are big */
		1305
		1306	for (;;)
		1307	{
		1308	ssize_t res = read (sigfd, si, sizeof (si));
		1309
		1310	/* not ISO-C, as res might be -1, but works with SuS */
		1311	for (sip = si; (char )sip < (char )si + res; ++sip)
		1312	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1313
		1314	if (res < (ssize_t)sizeof (si))
		1315	break;
		1316	}
		1317	}
		1318	#endif
1194		1319
1195	/*****************************************************************************/	1320	/*****************************************************************************/
1196		1321
1197	static WL childs [EV_PID_HASHSIZE];	1322	static WL childs [EV_PID_HASHSIZE];
1198		1323
…		…
1343	ev_backend (EV_P)	1468	ev_backend (EV_P)
1344	{	1469	{
1345	return backend;	1470	return backend;
1346	}	1471	}
1347		1472
		1473	#if EV_MINIMAL < 2
1348	unsigned int	1474	unsigned int
1349	ev_loop_count (EV_P)	1475	ev_loop_count (EV_P)
1350	{	1476	{
1351	return loop_count;	1477	return loop_count;
1352	}	1478	}
1353		1479
		1480	unsigned int
		1481	ev_loop_depth (EV_P)
		1482	{
		1483	return loop_depth;
		1484	}
		1485
1354	void	1486	void
1355	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1487	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1356	{	1488	{
1357	io_blocktime = interval;	1489	io_blocktime = interval;
1358	}	1490	}
…		…
1360	void	1492	void
1361	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1493	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1362	{	1494	{
1363	timeout_blocktime = interval;	1495	timeout_blocktime = interval;
1364	}	1496	}
		1497
		1498	void
		1499	ev_set_userdata (EV_P_ void *data)
		1500	{
		1501	userdata = data;
		1502	}
		1503
		1504	void *
		1505	ev_userdata (EV_P)
		1506	{
		1507	return userdata;
		1508	}
		1509
		1510	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1511	{
		1512	invoke_cb = invoke_pending_cb;
		1513	}
		1514
		1515	void ev_set_loop_release_cb (EV_P_ void (release)(EV_P), void (acquire)(EV_P))
		1516	{
		1517	release_cb = release;
		1518	acquire_cb = acquire;
		1519	}
		1520	#endif
1365		1521
1366	/* initialise a loop structure, must be zero-initialised */	1522	/* initialise a loop structure, must be zero-initialised */
1367	static void noinline	1523	static void noinline
1368	loop_init (EV_P_ unsigned int flags)	1524	loop_init (EV_P_ unsigned int flags)
1369	{	1525	{
…		…
1387	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1543	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1388	have_monotonic = 1;	1544	have_monotonic = 1;
1389	}	1545	}
1390	#endif	1546	#endif
1391		1547
		1548	/* pid check not overridable via env */
		1549	#ifndef _WIN32
		1550	if (flags & EVFLAG_FORKCHECK)
		1551	curpid = getpid ();
		1552	#endif
		1553
		1554	if (!(flags & EVFLAG_NOENV)
		1555	&& !enable_secure ()
		1556	&& getenv ("LIBEV_FLAGS"))
		1557	flags = atoi (getenv ("LIBEV_FLAGS"));
		1558
1392	ev_rt_now = ev_time ();	1559	ev_rt_now = ev_time ();
1393	mn_now = get_clock ();	1560	mn_now = get_clock ();
1394	now_floor = mn_now;	1561	now_floor = mn_now;
1395	rtmn_diff = ev_rt_now - mn_now;	1562	rtmn_diff = ev_rt_now - mn_now;
		1563	#if EV_MINIMAL < 2
		1564	invoke_cb = ev_invoke_pending;
		1565	#endif
1396		1566
1397	io_blocktime = 0.;	1567	io_blocktime = 0.;
1398	timeout_blocktime = 0.;	1568	timeout_blocktime = 0.;
1399	backend = 0;	1569	backend = 0;
1400	backend_fd = -1;	1570	backend_fd = -1;
1401	gotasync = 0;	1571	sig_pending = 0;
		1572	#if EV_ASYNC_ENABLE
		1573	async_pending = 0;
		1574	#endif
1402	#if EV_USE_INOTIFY	1575	#if EV_USE_INOTIFY
1403	fs_fd = -2;	1576	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1404	#endif	1577	#endif
1405		1578	#if EV_USE_SIGNALFD
1406	/* pid check not overridable via env */	1579	sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2;
1407	#ifndef _WIN32
1408	if (flags & EVFLAG_FORKCHECK)
1409	curpid = getpid ();
1410	#endif	1580	#endif
1411
1412	if (!(flags & EVFLAG_NOENV)
1413	&& !enable_secure ()
1414	&& getenv ("LIBEV_FLAGS"))
1415	flags = atoi (getenv ("LIBEV_FLAGS"));
1416		1581
1417	if (!(flags & 0x0000ffffU))	1582	if (!(flags & 0x0000ffffU))
1418	flags \|= ev_recommended_backends ();	1583	flags \|= ev_recommended_backends ();
1419		1584
1420	#if EV_USE_PORT	1585	#if EV_USE_PORT
…		…
1446	{	1611	{
1447	int i;	1612	int i;
1448		1613
1449	if (ev_is_active (&pipe_w))	1614	if (ev_is_active (&pipe_w))
1450	{	1615	{
1451	ev_ref (EV_A); /* signal watcher */	1616	/ev_ref (EV_A);/
1452	ev_io_stop (EV_A_ &pipe_w);	1617	/ev_io_stop (EV_A_ &pipe_w);/
1453		1618
1454	#if EV_USE_EVENTFD	1619	#if EV_USE_EVENTFD
1455	if (evfd >= 0)	1620	if (evfd >= 0)
1456	close (evfd);	1621	close (evfd);
1457	#endif	1622	#endif
…		…
1461	close (evpipe [0]);	1626	close (evpipe [0]);
1462	close (evpipe [1]);	1627	close (evpipe [1]);
1463	}	1628	}
1464	}	1629	}
1465		1630
		1631	#if EV_USE_SIGNALFD
		1632	if (ev_is_active (&sigfd_w))
		1633	{
		1634	/ev_ref (EV_A);/
		1635	/ev_io_stop (EV_A_ &sigfd_w);/
		1636
		1637	close (sigfd);
		1638	}
		1639	#endif
		1640
1466	#if EV_USE_INOTIFY	1641	#if EV_USE_INOTIFY
1467	if (fs_fd >= 0)	1642	if (fs_fd >= 0)
1468	close (fs_fd);	1643	close (fs_fd);
1469	#endif	1644	#endif
1470		1645
…		…
1493	#if EV_IDLE_ENABLE	1668	#if EV_IDLE_ENABLE
1494	array_free (idle, [i]);	1669	array_free (idle, [i]);
1495	#endif	1670	#endif
1496	}	1671	}
1497		1672
1498	ev_free (anfds); anfdmax = 0;	1673	ev_free (anfds); anfds = 0; anfdmax = 0;
1499		1674
1500	/* have to use the microsoft-never-gets-it-right macro */	1675	/* have to use the microsoft-never-gets-it-right macro */
1501	array_free (rfeed, EMPTY);	1676	array_free (rfeed, EMPTY);
1502	array_free (fdchange, EMPTY);	1677	array_free (fdchange, EMPTY);
1503	array_free (timer, EMPTY);	1678	array_free (timer, EMPTY);
…		…
1538		1713
1539	if (ev_is_active (&pipe_w))	1714	if (ev_is_active (&pipe_w))
1540	{	1715	{
1541	/* this "locks" the handlers against writing to the pipe */	1716	/* this "locks" the handlers against writing to the pipe */
1542	/* while we modify the fd vars */	1717	/* while we modify the fd vars */
1543	gotsig = 1;	1718	sig_pending = 1;
1544	#if EV_ASYNC_ENABLE	1719	#if EV_ASYNC_ENABLE
1545	gotasync = 1;	1720	async_pending = 1;
1546	#endif	1721	#endif
1547		1722
1548	ev_ref (EV_A);	1723	ev_ref (EV_A);
1549	ev_io_stop (EV_A_ &pipe_w);	1724	ev_io_stop (EV_A_ &pipe_w);
1550		1725
…		…
1570	#if EV_MULTIPLICITY	1745	#if EV_MULTIPLICITY
1571		1746
1572	struct ev_loop *	1747	struct ev_loop *
1573	ev_loop_new (unsigned int flags)	1748	ev_loop_new (unsigned int flags)
1574	{	1749	{
1575	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));	1750	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1576		1751
1577	memset (loop, 0, sizeof (struct ev_loop));	1752	memset (EV_A, 0, sizeof (struct ev_loop));
1578
1579	loop_init (EV_A_ flags);	1753	loop_init (EV_A_ flags);
1580		1754
1581	if (ev_backend (EV_A))	1755	if (ev_backend (EV_A))
1582	return loop;	1756	return EV_A;
1583		1757
1584	return 0;	1758	return 0;
1585	}	1759	}
1586		1760
1587	void	1761	void
…		…
1594	void	1768	void
1595	ev_loop_fork (EV_P)	1769	ev_loop_fork (EV_P)
1596	{	1770	{
1597	postfork = 1; /* must be in line with ev_default_fork */	1771	postfork = 1; /* must be in line with ev_default_fork */
1598	}	1772	}
		1773	#endif /* multiplicity */
1599		1774
1600	#if EV_VERIFY	1775	#if EV_VERIFY
1601	static void noinline	1776	static void noinline
1602	verify_watcher (EV_P_ W w)	1777	verify_watcher (EV_P_ W w)
1603	{	1778	{
…		…
1631	verify_watcher (EV_A_ ws [cnt]);	1806	verify_watcher (EV_A_ ws [cnt]);
1632	}	1807	}
1633	}	1808	}
1634	#endif	1809	#endif
1635		1810
		1811	#if EV_MINIMAL < 2
1636	void	1812	void
1637	ev_loop_verify (EV_P)	1813	ev_loop_verify (EV_P)
1638	{	1814	{
1639	#if EV_VERIFY	1815	#if EV_VERIFY
1640	int i;	1816	int i;
…		…
1689	assert (checkmax >= checkcnt);	1865	assert (checkmax >= checkcnt);
1690	array_verify (EV_A_ (W *)checks, checkcnt);	1866	array_verify (EV_A_ (W *)checks, checkcnt);
1691		1867
1692	# if 0	1868	# if 0
1693	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	1869	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
1694	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)	1870	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1695	# endif	1871	# endif
1696	#endif	1872	#endif
1697	}	1873	}
1698		1874	#endif
1699	#endif /* multiplicity */
1700		1875
1701	#if EV_MULTIPLICITY	1876	#if EV_MULTIPLICITY
1702	struct ev_loop *	1877	struct ev_loop *
1703	ev_default_loop_init (unsigned int flags)	1878	ev_default_loop_init (unsigned int flags)
1704	#else	1879	#else
…		…
1707	#endif	1882	#endif
1708	{	1883	{
1709	if (!ev_default_loop_ptr)	1884	if (!ev_default_loop_ptr)
1710	{	1885	{
1711	#if EV_MULTIPLICITY	1886	#if EV_MULTIPLICITY
1712	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1887	EV_P = ev_default_loop_ptr = &default_loop_struct;
1713	#else	1888	#else
1714	ev_default_loop_ptr = 1;	1889	ev_default_loop_ptr = 1;
1715	#endif	1890	#endif
1716		1891
1717	loop_init (EV_A_ flags);	1892	loop_init (EV_A_ flags);
…		…
1734		1909
1735	void	1910	void
1736	ev_default_destroy (void)	1911	ev_default_destroy (void)
1737	{	1912	{
1738	#if EV_MULTIPLICITY	1913	#if EV_MULTIPLICITY
1739	struct ev_loop *loop = ev_default_loop_ptr;	1914	EV_P = ev_default_loop_ptr;
1740	#endif	1915	#endif
1741		1916
1742	ev_default_loop_ptr = 0;	1917	ev_default_loop_ptr = 0;
1743		1918
1744	#ifndef _WIN32	1919	#ifndef _WIN32
…		…
1751		1926
1752	void	1927	void
1753	ev_default_fork (void)	1928	ev_default_fork (void)
1754	{	1929	{
1755	#if EV_MULTIPLICITY	1930	#if EV_MULTIPLICITY
1756	struct ev_loop *loop = ev_default_loop_ptr;	1931	EV_P = ev_default_loop_ptr;
1757	#endif	1932	#endif
1758		1933
1759	postfork = 1; /* must be in line with ev_loop_fork */	1934	postfork = 1; /* must be in line with ev_loop_fork */
1760	}	1935	}
1761		1936
…		…
1765	ev_invoke (EV_P_ void *w, int revents)	1940	ev_invoke (EV_P_ void *w, int revents)
1766	{	1941	{
1767	EV_CB_INVOKE ((W)w, revents);	1942	EV_CB_INVOKE ((W)w, revents);
1768	}	1943	}
1769		1944
1770	inline_speed void	1945	unsigned int
1771	call_pending (EV_P)	1946	ev_pending_count (EV_P)
		1947	{
		1948	int pri;
		1949	unsigned int count = 0;
		1950
		1951	for (pri = NUMPRI; pri--; )
		1952	count += pendingcnt [pri];
		1953
		1954	return count;
		1955	}
		1956
		1957	void noinline
		1958	ev_invoke_pending (EV_P)
1772	{	1959	{
1773	int pri;	1960	int pri;
1774		1961
1775	for (pri = NUMPRI; pri--; )	1962	for (pri = NUMPRI; pri--; )
1776	while (pendingcnt [pri])	1963	while (pendingcnt [pri])
…		…
1948	/* fetch new monotonic and realtime times from the kernel */	2135	/* fetch new monotonic and realtime times from the kernel */
1949	/* also detetc if there was a timejump, and act accordingly */	2136	/* also detetc if there was a timejump, and act accordingly */
1950	inline_speed void	2137	inline_speed void
1951	time_update (EV_P_ ev_tstamp max_block)	2138	time_update (EV_P_ ev_tstamp max_block)
1952	{	2139	{
1953	int i;
1954
1955	#if EV_USE_MONOTONIC	2140	#if EV_USE_MONOTONIC
1956	if (expect_true (have_monotonic))	2141	if (expect_true (have_monotonic))
1957	{	2142	{
		2143	int i;
1958	ev_tstamp odiff = rtmn_diff;	2144	ev_tstamp odiff = rtmn_diff;
1959		2145
1960	mn_now = get_clock ();	2146	mn_now = get_clock ();
1961		2147
1962	/* only fetch the realtime clock every 0.5MIN_TIMEJUMP seconds /	2148	/* only fetch the realtime clock every 0.5MIN_TIMEJUMP seconds /
…		…
2012		2198
2013	mn_now = ev_rt_now;	2199	mn_now = ev_rt_now;
2014	}	2200	}
2015	}	2201	}
2016		2202
2017	static int loop_done;
2018
2019	void	2203	void
2020	ev_loop (EV_P_ int flags)	2204	ev_loop (EV_P_ int flags)
2021	{	2205	{
		2206	#if EV_MINIMAL < 2
		2207	++loop_depth;
		2208	#endif
		2209
		2210	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2211
2022	loop_done = EVUNLOOP_CANCEL;	2212	loop_done = EVUNLOOP_CANCEL;
2023		2213
2024	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2214	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2025		2215
2026	do	2216	do
2027	{	2217	{
2028	#if EV_VERIFY >= 2	2218	#if EV_VERIFY >= 2
2029	ev_loop_verify (EV_A);	2219	ev_loop_verify (EV_A);
…		…
2042	/* we might have forked, so queue fork handlers */	2232	/* we might have forked, so queue fork handlers */
2043	if (expect_false (postfork))	2233	if (expect_false (postfork))
2044	if (forkcnt)	2234	if (forkcnt)
2045	{	2235	{
2046	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2236	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2047	call_pending (EV_A);	2237	EV_INVOKE_PENDING;
2048	}	2238	}
2049	#endif	2239	#endif
2050		2240
2051	/* queue prepare watchers (and execute them) */	2241	/* queue prepare watchers (and execute them) */
2052	if (expect_false (preparecnt))	2242	if (expect_false (preparecnt))
2053	{	2243	{
2054	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2244	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2055	call_pending (EV_A);	2245	EV_INVOKE_PENDING;
2056	}	2246	}
		2247
		2248	if (expect_false (loop_done))
		2249	break;
2057		2250
2058	/* we might have forked, so reify kernel state if necessary */	2251	/* we might have forked, so reify kernel state if necessary */
2059	if (expect_false (postfork))	2252	if (expect_false (postfork))
2060	loop_fork (EV_A);	2253	loop_fork (EV_A);
2061		2254
…		…
2067	ev_tstamp waittime = 0.;	2260	ev_tstamp waittime = 0.;
2068	ev_tstamp sleeptime = 0.;	2261	ev_tstamp sleeptime = 0.;
2069		2262
2070	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))	2263	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))
2071	{	2264	{
		2265	/* remember old timestamp for io_blocktime calculation */
		2266	ev_tstamp prev_mn_now = mn_now;
		2267
2072	/* update time to cancel out callback processing overhead */	2268	/* update time to cancel out callback processing overhead */
2073	time_update (EV_A_ 1e100);	2269	time_update (EV_A_ 1e100);
2074		2270
2075	waittime = MAX_BLOCKTIME;	2271	waittime = MAX_BLOCKTIME;
2076		2272
…		…
2086	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2282	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
2087	if (waittime > to) waittime = to;	2283	if (waittime > to) waittime = to;
2088	}	2284	}
2089	#endif	2285	#endif
2090		2286
		2287	/* don't let timeouts decrease the waittime below timeout_blocktime */
2091	if (expect_false (waittime < timeout_blocktime))	2288	if (expect_false (waittime < timeout_blocktime))
2092	waittime = timeout_blocktime;	2289	waittime = timeout_blocktime;
2093		2290
2094	sleeptime = waittime - backend_fudge;	2291	/* extra check because io_blocktime is commonly 0 */
2095
2096	if (expect_true (sleeptime > io_blocktime))	2292	if (expect_false (io_blocktime))
2097	sleeptime = io_blocktime;
2098
2099	if (sleeptime)
2100	{	2293	{
		2294	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2295
		2296	if (sleeptime > waittime - backend_fudge)
		2297	sleeptime = waittime - backend_fudge;
		2298
		2299	if (expect_true (sleeptime > 0.))
		2300	{
2101	ev_sleep (sleeptime);	2301	ev_sleep (sleeptime);
2102	waittime -= sleeptime;	2302	waittime -= sleeptime;
		2303	}
2103	}	2304	}
2104	}	2305	}
2105		2306
		2307	#if EV_MINIMAL < 2
2106	++loop_count;	2308	++loop_count;
		2309	#endif
		2310	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2107	backend_poll (EV_A_ waittime);	2311	backend_poll (EV_A_ waittime);
		2312	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2108		2313
2109	/* update ev_rt_now, do magic */	2314	/* update ev_rt_now, do magic */
2110	time_update (EV_A_ waittime + sleeptime);	2315	time_update (EV_A_ waittime + sleeptime);
2111	}	2316	}
2112		2317
…		…
2123		2328
2124	/* queue check watchers, to be executed first */	2329	/* queue check watchers, to be executed first */
2125	if (expect_false (checkcnt))	2330	if (expect_false (checkcnt))
2126	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2331	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2127		2332
2128	call_pending (EV_A);	2333	EV_INVOKE_PENDING;
2129	}	2334	}
2130	while (expect_true (	2335	while (expect_true (
2131	activecnt	2336	activecnt
2132	&& !loop_done	2337	&& !loop_done
2133	&& !(flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK))	2338	&& !(flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK))
2134	));	2339	));
2135		2340
2136	if (loop_done == EVUNLOOP_ONE)	2341	if (loop_done == EVUNLOOP_ONE)
2137	loop_done = EVUNLOOP_CANCEL;	2342	loop_done = EVUNLOOP_CANCEL;
		2343
		2344	#if EV_MINIMAL < 2
		2345	--loop_depth;
		2346	#endif
2138	}	2347	}
2139		2348
2140	void	2349	void
2141	ev_unloop (EV_P_ int how)	2350	ev_unloop (EV_P_ int how)
2142	{	2351	{
…		…
2193	inline_size void	2402	inline_size void
2194	wlist_del (WL *head, WL elem)	2403	wlist_del (WL *head, WL elem)
2195	{	2404	{
2196	while (*head)	2405	while (*head)
2197	{	2406	{
2198	if (*head == elem)	2407	if (expect_true (*head == elem))
2199	{	2408	{
2200	*head = elem->next;	2409	*head = elem->next;
2201	return;	2410	break;
2202	}	2411	}
2203		2412
2204	head = &(*head)->next;	2413	head = &(*head)->next;
2205	}	2414	}
2206	}	2415	}
…		…
2234	}	2443	}
2235		2444
2236	inline_size void	2445	inline_size void
2237	pri_adjust (EV_P_ W w)	2446	pri_adjust (EV_P_ W w)
2238	{	2447	{
2239	int pri = w->priority;	2448	int pri = ev_priority (w);
2240	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2449	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2241	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2450	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2242	w->priority = pri;	2451	ev_set_priority (w, pri);
2243	}	2452	}
2244		2453
2245	inline_speed void	2454	inline_speed void
2246	ev_start (EV_P_ W w, int active)	2455	ev_start (EV_P_ W w, int active)
2247	{	2456	{
…		…
2274		2483
2275	ev_start (EV_A_ (W)w, 1);	2484	ev_start (EV_A_ (W)w, 1);
2276	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2485	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2277	wlist_add (&anfds[fd].head, (WL)w);	2486	wlist_add (&anfds[fd].head, (WL)w);
2278		2487
2279	fd_change (EV_A_ fd, w->events & EV__IOFDSET \| 1);	2488	fd_change (EV_A_ fd, w->events & EV__IOFDSET \| EV_ANFD_REIFY);
2280	w->events &= ~EV__IOFDSET;	2489	w->events &= ~EV__IOFDSET;
2281		2490
2282	EV_FREQUENT_CHECK;	2491	EV_FREQUENT_CHECK;
2283	}	2492	}
2284		2493
…		…
2378	}	2587	}
2379		2588
2380	EV_FREQUENT_CHECK;	2589	EV_FREQUENT_CHECK;
2381	}	2590	}
2382		2591
		2592	ev_tstamp
		2593	ev_timer_remaining (EV_P_ ev_timer *w)
		2594	{
		2595	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
		2596	}
		2597
2383	#if EV_PERIODIC_ENABLE	2598	#if EV_PERIODIC_ENABLE
2384	void noinline	2599	void noinline
2385	ev_periodic_start (EV_P_ ev_periodic *w)	2600	ev_periodic_start (EV_P_ ev_periodic *w)
2386	{	2601	{
2387	if (expect_false (ev_is_active (w)))	2602	if (expect_false (ev_is_active (w)))
…		…
2454	#endif	2669	#endif
2455		2670
2456	void noinline	2671	void noinline
2457	ev_signal_start (EV_P_ ev_signal *w)	2672	ev_signal_start (EV_P_ ev_signal *w)
2458	{	2673	{
2459	#if EV_MULTIPLICITY
2460	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2461	#endif
2462	if (expect_false (ev_is_active (w)))	2674	if (expect_false (ev_is_active (w)))
2463	return;	2675	return;
2464		2676
2465	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));	2677	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2466		2678
2467	evpipe_init (EV_A);	2679	#if EV_MULTIPLICITY
		2680	assert (("libev: a signal must not be attached to two different loops",
		2681	!signals [w->signum - 1].loop \|\| signals [w->signum - 1].loop == loop));
2468		2682
2469	EV_FREQUENT_CHECK;	2683	signals [w->signum - 1].loop = EV_A;
		2684	#endif
2470		2685
		2686	EV_FREQUENT_CHECK;
		2687
		2688	#if EV_USE_SIGNALFD
		2689	if (sigfd == -2)
2471	{	2690	{
2472	#ifndef _WIN32	2691	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK \| SFD_CLOEXEC);
2473	sigset_t full, prev;	2692	if (sigfd < 0 && errno == EINVAL)
2474	sigfillset (&full);	2693	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2475	sigprocmask (SIG_SETMASK, &full, &prev);
2476	#endif
2477		2694
2478	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);	2695	if (sigfd >= 0)
		2696	{
		2697	fd_intern (sigfd); /* doing it twice will not hurt */
2479		2698
2480	#ifndef _WIN32	2699	sigemptyset (&sigfd_set);
2481	sigprocmask (SIG_SETMASK, &prev, 0);	2700
2482	#endif	2701	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2702	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2703	ev_io_start (EV_A_ &sigfd_w);
		2704	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2705	}
2483	}	2706	}
		2707
		2708	if (sigfd >= 0)
		2709	{
		2710	/* TODO: check .head */
		2711	sigaddset (&sigfd_set, w->signum);
		2712	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2713
		2714	signalfd (sigfd, &sigfd_set, 0);
		2715	}
		2716	#endif
2484		2717
2485	ev_start (EV_A_ (W)w, 1);	2718	ev_start (EV_A_ (W)w, 1);
2486	wlist_add (&signals [w->signum - 1].head, (WL)w);	2719	wlist_add (&signals [w->signum - 1].head, (WL)w);
2487		2720
2488	if (!((WL)w)->next)	2721	if (!((WL)w)->next)
		2722	# if EV_USE_SIGNALFD
		2723	if (sigfd < 0) /TODO/
		2724	# endif
2489	{	2725	{
2490	#if _WIN32	2726	# if _WIN32
2491	signal (w->signum, ev_sighandler);	2727	signal (w->signum, ev_sighandler);
2492	#else	2728	# else
2493	struct sigaction sa;	2729	struct sigaction sa;
		2730
		2731	evpipe_init (EV_A);
		2732
2494	sa.sa_handler = ev_sighandler;	2733	sa.sa_handler = ev_sighandler;
2495	sigfillset (&sa.sa_mask);	2734	sigfillset (&sa.sa_mask);
2496	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2735	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2497	sigaction (w->signum, &sa, 0);	2736	sigaction (w->signum, &sa, 0);
		2737
		2738	sigemptyset (&sa.sa_mask);
		2739	sigaddset (&sa.sa_mask, w->signum);
		2740	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2498	#endif	2741	#endif
2499	}	2742	}
2500		2743
2501	EV_FREQUENT_CHECK;	2744	EV_FREQUENT_CHECK;
2502	}	2745	}
2503		2746
2504	void noinline	2747	void noinline
…		…
2512		2755
2513	wlist_del (&signals [w->signum - 1].head, (WL)w);	2756	wlist_del (&signals [w->signum - 1].head, (WL)w);
2514	ev_stop (EV_A_ (W)w);	2757	ev_stop (EV_A_ (W)w);
2515		2758
2516	if (!signals [w->signum - 1].head)	2759	if (!signals [w->signum - 1].head)
		2760	{
		2761	#if EV_MULTIPLICITY
		2762	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2763	#endif
		2764	#if EV_USE_SIGNALFD
		2765	if (sigfd >= 0)
		2766	{
		2767	sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D
		2768	sigdelset (&sigfd_set, w->signum);
		2769	signalfd (sigfd, &sigfd_set, 0);
		2770	sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D
		2771	/TODO: maybe unblock signal? /
		2772	}
		2773	else
		2774	#endif
2517	signal (w->signum, SIG_DFL);	2775	signal (w->signum, SIG_DFL);
		2776	}
2518		2777
2519	EV_FREQUENT_CHECK;	2778	EV_FREQUENT_CHECK;
2520	}	2779	}
2521		2780
2522	void	2781	void
…		…
2602	}	2861	}
2603	}	2862	}
2604		2863
2605	if (w->wd >= 0)	2864	if (w->wd >= 0)
2606	{	2865	{
		2866	struct statfs sfs;
		2867
2607	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2868	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2608		2869
2609	/* now local changes will be tracked by inotify, but remote changes won't */	2870	/* now local changes will be tracked by inotify, but remote changes won't */
2610	/* unless the filesystem it known to be local, we therefore still poll */	2871	/* unless the filesystem it known to be local, we therefore still poll */
2611	/* also do poll on <2.6.25, but with normal frequency */	2872	/* also do poll on <2.6.25, but with normal frequency */
2612	struct statfs sfs;
2613		2873
2614	if (fs_2625 && !statfs (w->path, &sfs))	2874	if (fs_2625 && !statfs (w->path, &sfs))
2615	if (sfs.f_type == 0x1373 /* devfs */	2875	if (sfs.f_type == 0x1373 /* devfs */
2616	\|\| sfs.f_type == 0xEF53 /* ext2/3 */	2876	\|\| sfs.f_type == 0xEF53 /* ext2/3 */
2617	\|\| sfs.f_type == 0x3153464a /* jfs */	2877	\|\| sfs.f_type == 0x3153464a /* jfs */
…		…
3002	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3262	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3003	{	3263	{
3004	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));	3264	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
3005		3265
3006	{	3266	{
3007	struct ev_loop *loop = w->other;	3267	EV_P = w->other;
3008		3268
3009	while (fdchangecnt)	3269	while (fdchangecnt)
3010	{	3270	{
3011	fd_reify (EV_A);	3271	fd_reify (EV_A);
3012	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3272	ev_loop (EV_A_ EVLOOP_NONBLOCK);
…		…
3020	ev_embed w = (ev_embed )(((char *)fork_w) - offsetof (ev_embed, fork));	3280	ev_embed w = (ev_embed )(((char *)fork_w) - offsetof (ev_embed, fork));
3021		3281
3022	ev_embed_stop (EV_A_ w);	3282	ev_embed_stop (EV_A_ w);
3023		3283
3024	{	3284	{
3025	struct ev_loop *loop = w->other;	3285	EV_P = w->other;
3026		3286
3027	ev_loop_fork (EV_A);	3287	ev_loop_fork (EV_A);
3028	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3288	ev_loop (EV_A_ EVLOOP_NONBLOCK);
3029	}	3289	}
3030		3290
…		…
3044	{	3304	{
3045	if (expect_false (ev_is_active (w)))	3305	if (expect_false (ev_is_active (w)))
3046	return;	3306	return;
3047		3307
3048	{	3308	{
3049	struct ev_loop *loop = w->other;	3309	EV_P = w->other;
3050	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3310	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3051	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3311	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3052	}	3312	}
3053		3313
3054	EV_FREQUENT_CHECK;	3314	EV_FREQUENT_CHECK;
…		…
3166		3426
3167	void	3427	void
3168	ev_async_send (EV_P_ ev_async *w)	3428	ev_async_send (EV_P_ ev_async *w)
3169	{	3429	{
3170	w->sent = 1;	3430	w->sent = 1;
3171	evpipe_write (EV_A_ &gotasync);	3431	evpipe_write (EV_A_ &async_pending);
3172	}	3432	}
3173	#endif	3433	#endif
3174		3434
3175	/*****************************************************************************/	3435	/*****************************************************************************/
3176		3436
…		…
3325	if (types & EV_CHECK)	3585	if (types & EV_CHECK)
3326	for (i = checkcnt; i--; )	3586	for (i = checkcnt; i--; )
3327	cb (EV_A_ EV_CHECK, checks [i]);	3587	cb (EV_A_ EV_CHECK, checks [i]);
3328		3588
3329	if (types & EV_SIGNAL)	3589	if (types & EV_SIGNAL)
3330	for (i = 0; i < signalmax; ++i)	3590	for (i = 0; i < EV_NSIG - 1; ++i)
3331	for (wl = signals [i].head; wl; )	3591	for (wl = signals [i].head; wl; )
3332	{	3592	{
3333	wn = wl->next;	3593	wn = wl->next;
3334	cb (EV_A_ EV_SIGNAL, wl);	3594	cb (EV_A_ EV_SIGNAL, wl);
3335	wl = wn;	3595	wl = wn;

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Comparing libev/ev.c (file contents): Revision 1.288 by root, Sat Apr 25 14:12:48 2009 UTC vs. Revision 1.312 by root, Wed Aug 12 18:48:17 2009 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.288 by root, Sat Apr 25 14:12:48 2009 UTC vs.
Revision 1.312 by root, Wed Aug 12 18:48:17 2009 UTC