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

Comparing libev/ev.c (file contents):
Revision 1.185 by root, Fri Dec 14 18:22:30 2007 UTC vs.
Revision 1.209 by root, Tue Feb 5 23:56:33 2008 UTC

…		…
1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* modification, are permitted provided that the following conditions are	8	* tion, are permitted provided that the following conditions are met:
9	* met:	9	*
		10	* 1. Redistributions of source code must retain the above copyright notice,
		11	* this list of conditions and the following disclaimer.
		12	*
		13	* 2. Redistributions in binary form must reproduce the above copyright
		14	* notice, this list of conditions and the following disclaimer in the
		15	* documentation and/or other materials provided with the distribution.
		16	*
		17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
		18	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
		19	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
		20	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
		21	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
		22	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
		23	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
		24	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
		25	* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
		26	* OF THE POSSIBILITY OF SUCH DAMAGE.
10	*	27	*
11	* * Redistributions of source code must retain the above copyright	28	* Alternatively, the contents of this file may be used under the terms of
12	* notice, this list of conditions and the following disclaimer.	29	* the GNU General Public License ("GPL") version 2 or any later version,
13	*	30	* in which case the provisions of the GPL are applicable instead of
14	* * Redistributions in binary form must reproduce the above	31	* the above. If you wish to allow the use of your version of this file
15	* copyright notice, this list of conditions and the following	32	* only under the terms of the GPL and not to allow others to use your
16	* disclaimer in the documentation and/or other materials provided	33	* version of this file under the BSD license, indicate your decision
17	* with the distribution.	34	* by deleting the provisions above and replace them with the notice
18	*	35	* and other provisions required by the GPL. If you do not delete the
19	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS	36	* provisions above, a recipient may use your version of this file under
20	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT	37	* either the BSD or the GPL.
21	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23	* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	38	*/
31		39
32	#ifdef __cplusplus	40	#ifdef __cplusplus
33	extern "C" {	41	extern "C" {
34	#endif	42	#endif
51	# ifndef EV_USE_MONOTONIC	59	# ifndef EV_USE_MONOTONIC
52	# define EV_USE_MONOTONIC 0	60	# define EV_USE_MONOTONIC 0
53	# endif	61	# endif
54	# ifndef EV_USE_REALTIME	62	# ifndef EV_USE_REALTIME
55	# define EV_USE_REALTIME 0	63	# define EV_USE_REALTIME 0
		64	# endif
		65	# endif
		66
		67	# ifndef EV_USE_NANOSLEEP
		68	# if HAVE_NANOSLEEP
		69	# define EV_USE_NANOSLEEP 1
		70	# else
		71	# define EV_USE_NANOSLEEP 0
56	# endif	72	# endif
57	# endif	73	# endif
58		74
59	# ifndef EV_USE_SELECT	75	# ifndef EV_USE_SELECT
60	# if HAVE_SELECT && HAVE_SYS_SELECT_H	76	# if HAVE_SELECT && HAVE_SYS_SELECT_H
…		…
146		162
147	#ifndef EV_USE_REALTIME	163	#ifndef EV_USE_REALTIME
148	# define EV_USE_REALTIME 0	164	# define EV_USE_REALTIME 0
149	#endif	165	#endif
150		166
		167	#ifndef EV_USE_NANOSLEEP
		168	# define EV_USE_NANOSLEEP 0
		169	#endif
		170
151	#ifndef EV_USE_SELECT	171	#ifndef EV_USE_SELECT
152	# define EV_USE_SELECT 1	172	# define EV_USE_SELECT 1
153	#endif	173	#endif
154		174
155	#ifndef EV_USE_POLL	175	#ifndef EV_USE_POLL
…		…
205	#endif	225	#endif
206		226
207	#if !EV_STAT_ENABLE	227	#if !EV_STAT_ENABLE
208	# undef EV_USE_INOTIFY	228	# undef EV_USE_INOTIFY
209	# define EV_USE_INOTIFY 0	229	# define EV_USE_INOTIFY 0
		230	#endif
		231
		232	#if !EV_USE_NANOSLEEP
		233	# ifndef _WIN32
		234	# include <sys/select.h>
		235	# endif
210	#endif	236	#endif
211		237
212	#if EV_USE_INOTIFY	238	#if EV_USE_INOTIFY
213	# include <sys/inotify.h>	239	# include <sys/inotify.h>
214	#endif	240	#endif
…		…
262		288
263	typedef ev_watcher *W;	289	typedef ev_watcher *W;
264	typedef ev_watcher_list *WL;	290	typedef ev_watcher_list *WL;
265	typedef ev_watcher_time *WT;	291	typedef ev_watcher_time *WT;
266		292
		293	#if EV_USE_MONOTONIC
		294	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		295	/* giving it a reasonably high chance of working on typical architetcures */
267	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	296	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		297	#endif
268		298
269	#ifdef _WIN32	299	#ifdef _WIN32
270	# include "ev_win32.c"	300	# include "ev_win32.c"
271	#endif	301	#endif
272		302
…		…
408	{	438	{
409	return ev_rt_now;	439	return ev_rt_now;
410	}	440	}
411	#endif	441	#endif
412		442
		443	void
		444	ev_sleep (ev_tstamp delay)
		445	{
		446	if (delay > 0.)
		447	{
		448	#if EV_USE_NANOSLEEP
		449	struct timespec ts;
		450
		451	ts.tv_sec = (time_t)delay;
		452	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		453
		454	nanosleep (&ts, 0);
		455	#elif defined(_WIN32)
		456	Sleep (delay * 1e3);
		457	#else
		458	struct timeval tv;
		459
		460	tv.tv_sec = (time_t)delay;
		461	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		462
		463	select (0, 0, 0, 0, &tv);
		464	#endif
		465	}
		466	}
		467
		468	/*****************************************************************************/
		469
413	int inline_size	470	int inline_size
414	array_nextsize (int elem, int cur, int cnt)	471	array_nextsize (int elem, int cur, int cnt)
415	{	472	{
416	int ncur = cur + 1;	473	int ncur = cur + 1;
417		474
…		…
543		600
544	#if EV_SELECT_IS_WINSOCKET	601	#if EV_SELECT_IS_WINSOCKET
545	if (events)	602	if (events)
546	{	603	{
547	unsigned long argp;	604	unsigned long argp;
		605	#ifdef EV_FD_TO_WIN32_HANDLE
		606	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		607	#else
548	anfd->handle = _get_osfhandle (fd);	608	anfd->handle = _get_osfhandle (fd);
		609	#endif
549	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	610	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
550	}	611	}
551	#endif	612	#endif
552		613
553	{	614	{
…		…
702	/*****************************************************************************/	763	/*****************************************************************************/
703		764
704	typedef struct	765	typedef struct
705	{	766	{
706	WL head;	767	WL head;
707	sig_atomic_t volatile gotsig;	768	EV_ATOMIC_T gotsig;
708	} ANSIG;	769	} ANSIG;
709		770
710	static ANSIG *signals;	771	static ANSIG *signals;
711	static int signalmax;	772	static int signalmax;
712		773
713	static int sigpipe [2];	774	static EV_ATOMIC_T gotsig;
714	static sig_atomic_t volatile gotsig;
715	static ev_io sigev;
716		775
717	void inline_size	776	void inline_size
718	signals_init (ANSIG *base, int count)	777	signals_init (ANSIG *base, int count)
719	{	778	{
720	while (count--)	779	while (count--)
…		…
724		783
725	++base;	784	++base;
726	}	785	}
727	}	786	}
728		787
729	static void	788	/*****************************************************************************/
730	sighandler (int signum)
731	{
732	#if _WIN32
733	signal (signum, sighandler);
734	#endif
735
736	signals [signum - 1].gotsig = 1;
737
738	if (!gotsig)
739	{
740	int old_errno = errno;
741	gotsig = 1;
742	write (sigpipe [1], &signum, 1);
743	errno = old_errno;
744	}
745	}
746
747	void noinline
748	ev_feed_signal_event (EV_P_ int signum)
749	{
750	WL w;
751
752	#if EV_MULTIPLICITY
753	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
754	#endif
755
756	--signum;
757
758	if (signum < 0 \|\| signum >= signalmax)
759	return;
760
761	signals [signum].gotsig = 0;
762
763	for (w = signals [signum].head; w; w = w->next)
764	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
765	}
766
767	static void
768	sigcb (EV_P_ ev_io *iow, int revents)
769	{
770	int signum;
771
772	read (sigpipe [0], &revents, 1);
773	gotsig = 0;
774
775	for (signum = signalmax; signum--; )
776	if (signals [signum].gotsig)
777	ev_feed_signal_event (EV_A_ signum + 1);
778	}
779		789
780	void inline_speed	790	void inline_speed
781	fd_intern (int fd)	791	fd_intern (int fd)
782	{	792	{
783	#ifdef _WIN32	793	#ifdef _WIN32
…		…
788	fcntl (fd, F_SETFL, O_NONBLOCK);	798	fcntl (fd, F_SETFL, O_NONBLOCK);
789	#endif	799	#endif
790	}	800	}
791		801
792	static void noinline	802	static void noinline
793	siginit (EV_P)	803	evpipe_init (EV_P)
794	{	804	{
		805	if (!ev_is_active (&pipeev))
		806	{
		807	while (pipe (evpipe))
		808	syserr ("(libev) error creating signal/async pipe");
		809
795	fd_intern (sigpipe [0]);	810	fd_intern (evpipe [0]);
796	fd_intern (sigpipe [1]);	811	fd_intern (evpipe [1]);
797		812
798	ev_io_set (&sigev, sigpipe [0], EV_READ);	813	ev_io_set (&pipeev, evpipe [0], EV_READ);
799	ev_io_start (EV_A_ &sigev);	814	ev_io_start (EV_A_ &pipeev);
800	ev_unref (EV_A); /* child watcher should not keep loop alive */	815	ev_unref (EV_A); /* child watcher should not keep loop alive */
		816	}
		817	}
		818
		819	void inline_size
		820	evpipe_write (EV_P_ int sig, int async)
		821	{
		822	if (!(gotasync \|\| gotsig))
		823	{
		824	int old_errno = errno;
		825
		826	if (sig) gotsig = 1;
		827	if (async) gotasync = 1;
		828
		829	write (evpipe [1], &old_errno, 1);
		830	errno = old_errno;
		831	}
		832	}
		833
		834	static void
		835	pipecb (EV_P_ ev_io *iow, int revents)
		836	{
		837	{
		838	int dummy;
		839	read (evpipe [0], &dummy, 1);
		840	}
		841
		842	if (gotsig)
		843	{
		844	int signum;
		845	gotsig = 0;
		846
		847	for (signum = signalmax; signum--; )
		848	if (signals [signum].gotsig)
		849	ev_feed_signal_event (EV_A_ signum + 1);
		850	}
		851
		852	#if EV_ASYNC_ENABLE
		853	if (gotasync)
		854	{
		855	int i;
		856	gotasync = 0;
		857
		858	for (i = asynccnt; i--; )
		859	if (asyncs [i]->sent)
		860	{
		861	asyncs [i]->sent = 0;
		862	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		863	}
		864	}
		865	#endif
801	}	866	}
802		867
803	/*****************************************************************************/	868	/*****************************************************************************/
804		869
		870	static void
		871	sighandler (int signum)
		872	{
		873	#if EV_MULTIPLICITY
		874	struct ev_loop *loop = &default_loop_struct;
		875	#endif
		876
		877	#if _WIN32
		878	signal (signum, sighandler);
		879	#endif
		880
		881	signals [signum - 1].gotsig = 1;
		882	evpipe_write (EV_A_ 1, 0);
		883	}
		884
		885	void noinline
		886	ev_feed_signal_event (EV_P_ int signum)
		887	{
		888	WL w;
		889
		890	#if EV_MULTIPLICITY
		891	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		892	#endif
		893
		894	--signum;
		895
		896	if (signum < 0 \|\| signum >= signalmax)
		897	return;
		898
		899	signals [signum].gotsig = 0;
		900
		901	for (w = signals [signum].head; w; w = w->next)
		902	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		903	}
		904
		905	/*****************************************************************************/
		906
805	static WL childs [EV_PID_HASHSIZE];	907	static WL childs [EV_PID_HASHSIZE];
806		908
807	#ifndef _WIN32	909	#ifndef _WIN32
808		910
809	static ev_signal childev;	911	static ev_signal childev;
		912
		913	#ifndef WIFCONTINUED
		914	# define WIFCONTINUED(status) 0
		915	#endif
810		916
811	void inline_speed	917	void inline_speed
812	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	918	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
813	{	919	{
814	ev_child *w;	920	ev_child *w;
		921	int traced = WIFSTOPPED (status) \|\| WIFCONTINUED (status);
815		922
816	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	923	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
		924	{
817	if (w->pid == pid \|\| !w->pid)	925	if ((w->pid == pid \|\| !w->pid)
		926	&& (!traced \|\| (w->flags & 1)))
818	{	927	{
819	ev_set_priority (w, ev_priority (sw)); /* need to do it now */	928	ev_set_priority (w, ev_priority (sw)); /* need to do it now */
820	w->rpid = pid;	929	w->rpid = pid;
821	w->rstatus = status;	930	w->rstatus = status;
822	ev_feed_event (EV_A_ (W)w, EV_CHILD);	931	ev_feed_event (EV_A_ (W)w, EV_CHILD);
823	}	932	}
		933	}
824	}	934	}
825		935
826	#ifndef WCONTINUED	936	#ifndef WCONTINUED
827	# define WCONTINUED 0	937	# define WCONTINUED 0
828	#endif	938	#endif
…		…
925	}	1035	}
926		1036
927	unsigned int	1037	unsigned int
928	ev_embeddable_backends (void)	1038	ev_embeddable_backends (void)
929	{	1039	{
930	return EVBACKEND_EPOLL	1040	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;
931	\| EVBACKEND_KQUEUE	1041
932	\| EVBACKEND_PORT;	1042	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1043	/* please fix it and tell me how to detect the fix */
		1044	flags &= ~EVBACKEND_EPOLL;
		1045
		1046	return flags;
933	}	1047	}
934		1048
935	unsigned int	1049	unsigned int
936	ev_backend (EV_P)	1050	ev_backend (EV_P)
937	{	1051	{
…		…
940		1054
941	unsigned int	1055	unsigned int
942	ev_loop_count (EV_P)	1056	ev_loop_count (EV_P)
943	{	1057	{
944	return loop_count;	1058	return loop_count;
		1059	}
		1060
		1061	void
		1062	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1063	{
		1064	io_blocktime = interval;
		1065	}
		1066
		1067	void
		1068	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1069	{
		1070	timeout_blocktime = interval;
945	}	1071	}
946		1072
947	static void noinline	1073	static void noinline
948	loop_init (EV_P_ unsigned int flags)	1074	loop_init (EV_P_ unsigned int flags)
949	{	1075	{
…		…
955	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1081	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
956	have_monotonic = 1;	1082	have_monotonic = 1;
957	}	1083	}
958	#endif	1084	#endif
959		1085
960	ev_rt_now = ev_time ();	1086	ev_rt_now = ev_time ();
961	mn_now = get_clock ();	1087	mn_now = get_clock ();
962	now_floor = mn_now;	1088	now_floor = mn_now;
963	rtmn_diff = ev_rt_now - mn_now;	1089	rtmn_diff = ev_rt_now - mn_now;
		1090
		1091	io_blocktime = 0.;
		1092	timeout_blocktime = 0.;
		1093	backend = 0;
		1094	backend_fd = -1;
		1095	gotasync = 0;
		1096	#if EV_USE_INOTIFY
		1097	fs_fd = -2;
		1098	#endif
964		1099
965	/* pid check not overridable via env */	1100	/* pid check not overridable via env */
966	#ifndef _WIN32	1101	#ifndef _WIN32
967	if (flags & EVFLAG_FORKCHECK)	1102	if (flags & EVFLAG_FORKCHECK)
968	curpid = getpid ();	1103	curpid = getpid ();
…		…
974	flags = atoi (getenv ("LIBEV_FLAGS"));	1109	flags = atoi (getenv ("LIBEV_FLAGS"));
975		1110
976	if (!(flags & 0x0000ffffUL))	1111	if (!(flags & 0x0000ffffUL))
977	flags \|= ev_recommended_backends ();	1112	flags \|= ev_recommended_backends ();
978		1113
979	backend = 0;
980	backend_fd = -1;
981	#if EV_USE_INOTIFY
982	fs_fd = -2;
983	#endif
984
985	#if EV_USE_PORT	1114	#if EV_USE_PORT
986	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1115	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
987	#endif	1116	#endif
988	#if EV_USE_KQUEUE	1117	#if EV_USE_KQUEUE
989	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1118	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
996	#endif	1125	#endif
997	#if EV_USE_SELECT	1126	#if EV_USE_SELECT
998	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1127	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
999	#endif	1128	#endif
1000		1129
1001	ev_init (&sigev, sigcb);	1130	ev_init (&pipeev, pipecb);
1002	ev_set_priority (&sigev, EV_MAXPRI);	1131	ev_set_priority (&pipeev, EV_MAXPRI);
1003	}	1132	}
1004	}	1133	}
1005		1134
1006	static void noinline	1135	static void noinline
1007	loop_destroy (EV_P)	1136	loop_destroy (EV_P)
1008	{	1137	{
1009	int i;	1138	int i;
		1139
		1140	if (ev_is_active (&pipeev))
		1141	{
		1142	ev_ref (EV_A); /* signal watcher */
		1143	ev_io_stop (EV_A_ &pipeev);
		1144
		1145	close (evpipe [0]); evpipe [0] = 0;
		1146	close (evpipe [1]); evpipe [1] = 0;
		1147	}
1010		1148
1011	#if EV_USE_INOTIFY	1149	#if EV_USE_INOTIFY
1012	if (fs_fd >= 0)	1150	if (fs_fd >= 0)
1013	close (fs_fd);	1151	close (fs_fd);
1014	#endif	1152	#endif
…		…
1037	array_free (pending, [i]);	1175	array_free (pending, [i]);
1038	#if EV_IDLE_ENABLE	1176	#if EV_IDLE_ENABLE
1039	array_free (idle, [i]);	1177	array_free (idle, [i]);
1040	#endif	1178	#endif
1041	}	1179	}
		1180
		1181	ev_free (anfds); anfdmax = 0;
1042		1182
1043	/* have to use the microsoft-never-gets-it-right macro */	1183	/* have to use the microsoft-never-gets-it-right macro */
1044	array_free (fdchange, EMPTY);	1184	array_free (fdchange, EMPTY);
1045	array_free (timer, EMPTY);	1185	array_free (timer, EMPTY);
1046	#if EV_PERIODIC_ENABLE	1186	#if EV_PERIODIC_ENABLE
1047	array_free (periodic, EMPTY);	1187	array_free (periodic, EMPTY);
1048	#endif	1188	#endif
		1189	#if EV_FORK_ENABLE
		1190	array_free (fork, EMPTY);
		1191	#endif
1049	array_free (prepare, EMPTY);	1192	array_free (prepare, EMPTY);
1050	array_free (check, EMPTY);	1193	array_free (check, EMPTY);
		1194	#if EV_ASYNC_ENABLE
		1195	array_free (async, EMPTY);
		1196	#endif
1051		1197
1052	backend = 0;	1198	backend = 0;
1053	}	1199	}
1054		1200
1055	void inline_size infy_fork (EV_P);	1201	void inline_size infy_fork (EV_P);
…		…
1068	#endif	1214	#endif
1069	#if EV_USE_INOTIFY	1215	#if EV_USE_INOTIFY
1070	infy_fork (EV_A);	1216	infy_fork (EV_A);
1071	#endif	1217	#endif
1072		1218
1073	if (ev_is_active (&sigev))	1219	if (ev_is_active (&pipeev))
1074	{	1220	{
1075	/* default loop */	1221	/* this "locks" the handlers against writing to the pipe */
		1222	gotsig = gotasync = 1;
1076		1223
1077	ev_ref (EV_A);	1224	ev_ref (EV_A);
1078	ev_io_stop (EV_A_ &sigev);	1225	ev_io_stop (EV_A_ &pipeev);
1079	close (sigpipe [0]);	1226	close (evpipe [0]);
1080	close (sigpipe [1]);	1227	close (evpipe [1]);
1081		1228
1082	while (pipe (sigpipe))
1083	syserr ("(libev) error creating pipe");
1084
1085	siginit (EV_A);	1229	evpipe_init (EV_A);
		1230	/* now iterate over everything, in case we missed something */
		1231	pipecb (EV_A_ &pipeev, EV_READ);
1086	}	1232	}
1087		1233
1088	postfork = 0;	1234	postfork = 0;
1089	}	1235	}
1090		1236
…		…
1112	}	1258	}
1113		1259
1114	void	1260	void
1115	ev_loop_fork (EV_P)	1261	ev_loop_fork (EV_P)
1116	{	1262	{
1117	postfork = 1;	1263	postfork = 1; /* must be in line with ev_default_fork */
1118	}	1264	}
1119		1265
1120	#endif	1266	#endif
1121		1267
1122	#if EV_MULTIPLICITY	1268	#if EV_MULTIPLICITY
…		…
1125	#else	1271	#else
1126	int	1272	int
1127	ev_default_loop (unsigned int flags)	1273	ev_default_loop (unsigned int flags)
1128	#endif	1274	#endif
1129	{	1275	{
1130	if (sigpipe [0] == sigpipe [1])
1131	if (pipe (sigpipe))
1132	return 0;
1133
1134	if (!ev_default_loop_ptr)	1276	if (!ev_default_loop_ptr)
1135	{	1277	{
1136	#if EV_MULTIPLICITY	1278	#if EV_MULTIPLICITY
1137	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1279	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1138	#else	1280	#else
…		…
1141		1283
1142	loop_init (EV_A_ flags);	1284	loop_init (EV_A_ flags);
1143		1285
1144	if (ev_backend (EV_A))	1286	if (ev_backend (EV_A))
1145	{	1287	{
1146	siginit (EV_A);
1147
1148	#ifndef _WIN32	1288	#ifndef _WIN32
1149	ev_signal_init (&childev, childcb, SIGCHLD);	1289	ev_signal_init (&childev, childcb, SIGCHLD);
1150	ev_set_priority (&childev, EV_MAXPRI);	1290	ev_set_priority (&childev, EV_MAXPRI);
1151	ev_signal_start (EV_A_ &childev);	1291	ev_signal_start (EV_A_ &childev);
1152	ev_unref (EV_A); /* child watcher should not keep loop alive */	1292	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1169	#ifndef _WIN32	1309	#ifndef _WIN32
1170	ev_ref (EV_A); /* child watcher */	1310	ev_ref (EV_A); /* child watcher */
1171	ev_signal_stop (EV_A_ &childev);	1311	ev_signal_stop (EV_A_ &childev);
1172	#endif	1312	#endif
1173		1313
1174	ev_ref (EV_A); /* signal watcher */
1175	ev_io_stop (EV_A_ &sigev);
1176
1177	close (sigpipe [0]); sigpipe [0] = 0;
1178	close (sigpipe [1]); sigpipe [1] = 0;
1179
1180	loop_destroy (EV_A);	1314	loop_destroy (EV_A);
1181	}	1315	}
1182		1316
1183	void	1317	void
1184	ev_default_fork (void)	1318	ev_default_fork (void)
…		…
1186	#if EV_MULTIPLICITY	1320	#if EV_MULTIPLICITY
1187	struct ev_loop *loop = ev_default_loop_ptr;	1321	struct ev_loop *loop = ev_default_loop_ptr;
1188	#endif	1322	#endif
1189		1323
1190	if (backend)	1324	if (backend)
1191	postfork = 1;	1325	postfork = 1; /* must be in line with ev_loop_fork */
1192	}	1326	}
1193		1327
1194	/*****************************************************************************/	1328	/*****************************************************************************/
1195		1329
1196	void	1330	void
…		…
1451	/* update fd-related kernel structures */	1585	/* update fd-related kernel structures */
1452	fd_reify (EV_A);	1586	fd_reify (EV_A);
1453		1587
1454	/* calculate blocking time */	1588	/* calculate blocking time */
1455	{	1589	{
1456	ev_tstamp block;	1590	ev_tstamp waittime = 0.;
		1591	ev_tstamp sleeptime = 0.;
1457		1592
1458	if (expect_false (flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt))	1593	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))
1459	block = 0.; /* do not block at all */
1460	else
1461	{	1594	{
1462	/* update time to cancel out callback processing overhead */	1595	/* update time to cancel out callback processing overhead */
1463	time_update (EV_A_ 1e100);	1596	time_update (EV_A_ 1e100);
1464		1597
1465	block = MAX_BLOCKTIME;	1598	waittime = MAX_BLOCKTIME;
1466		1599
1467	if (timercnt)	1600	if (timercnt)
1468	{	1601	{
1469	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1602	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1470	if (block > to) block = to;	1603	if (waittime > to) waittime = to;
1471	}	1604	}
1472		1605
1473	#if EV_PERIODIC_ENABLE	1606	#if EV_PERIODIC_ENABLE
1474	if (periodiccnt)	1607	if (periodiccnt)
1475	{	1608	{
1476	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1609	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1477	if (block > to) block = to;	1610	if (waittime > to) waittime = to;
1478	}	1611	}
1479	#endif	1612	#endif
1480		1613
1481	if (expect_false (block < 0.)) block = 0.;	1614	if (expect_false (waittime < timeout_blocktime))
		1615	waittime = timeout_blocktime;
		1616
		1617	sleeptime = waittime - backend_fudge;
		1618
		1619	if (expect_true (sleeptime > io_blocktime))
		1620	sleeptime = io_blocktime;
		1621
		1622	if (sleeptime)
		1623	{
		1624	ev_sleep (sleeptime);
		1625	waittime -= sleeptime;
		1626	}
1482	}	1627	}
1483		1628
1484	++loop_count;	1629	++loop_count;
1485	backend_poll (EV_A_ block);	1630	backend_poll (EV_A_ waittime);
1486		1631
1487	/* update ev_rt_now, do magic */	1632	/* update ev_rt_now, do magic */
1488	time_update (EV_A_ block);	1633	time_update (EV_A_ waittime + sleeptime);
1489	}	1634	}
1490		1635
1491	/* queue pending timers and reschedule them */	1636	/* queue pending timers and reschedule them */
1492	timers_reify (EV_A); /* relative timers called last */	1637	timers_reify (EV_A); /* relative timers called last */
1493	#if EV_PERIODIC_ENABLE	1638	#if EV_PERIODIC_ENABLE
…		…
1759	#endif	1904	#endif
1760	if (expect_false (ev_is_active (w)))	1905	if (expect_false (ev_is_active (w)))
1761	return;	1906	return;
1762		1907
1763	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1908	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1909
		1910	evpipe_init (EV_A);
1764		1911
1765	{	1912	{
1766	#ifndef _WIN32	1913	#ifndef _WIN32
1767	sigset_t full, prev;	1914	sigset_t full, prev;
1768	sigfillset (&full);	1915	sigfillset (&full);
…		…
2177		2324
2178	#if EV_EMBED_ENABLE	2325	#if EV_EMBED_ENABLE
2179	void noinline	2326	void noinline
2180	ev_embed_sweep (EV_P_ ev_embed *w)	2327	ev_embed_sweep (EV_P_ ev_embed *w)
2181	{	2328	{
2182	ev_loop (w->loop, EVLOOP_NONBLOCK);	2329	ev_loop (w->other, EVLOOP_NONBLOCK);
2183	}	2330	}
2184		2331
2185	static void	2332	static void
2186	embed_cb (EV_P_ ev_io *io, int revents)	2333	embed_io_cb (EV_P_ ev_io *io, int revents)
2187	{	2334	{
2188	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));	2335	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
2189		2336
2190	if (ev_cb (w))	2337	if (ev_cb (w))
2191	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2338	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2192	else	2339	else
2193	ev_embed_sweep (loop, w);	2340	ev_loop (w->other, EVLOOP_NONBLOCK);
2194	}	2341	}
		2342
		2343	static void
		2344	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2345	{
		2346	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
		2347
		2348	{
		2349	struct ev_loop *loop = w->other;
		2350
		2351	while (fdchangecnt)
		2352	{
		2353	fd_reify (EV_A);
		2354	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2355	}
		2356	}
		2357	}
		2358
		2359	#if 0
		2360	static void
		2361	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2362	{
		2363	ev_idle_stop (EV_A_ idle);
		2364	}
		2365	#endif
2195		2366
2196	void	2367	void
2197	ev_embed_start (EV_P_ ev_embed *w)	2368	ev_embed_start (EV_P_ ev_embed *w)
2198	{	2369	{
2199	if (expect_false (ev_is_active (w)))	2370	if (expect_false (ev_is_active (w)))
2200	return;	2371	return;
2201		2372
2202	{	2373	{
2203	struct ev_loop *loop = w->loop;	2374	struct ev_loop *loop = w->other;
2204	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2375	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2205	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2376	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2206	}	2377	}
2207		2378
2208	ev_set_priority (&w->io, ev_priority (w));	2379	ev_set_priority (&w->io, ev_priority (w));
2209	ev_io_start (EV_A_ &w->io);	2380	ev_io_start (EV_A_ &w->io);
2210		2381
		2382	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2383	ev_set_priority (&w->prepare, EV_MINPRI);
		2384	ev_prepare_start (EV_A_ &w->prepare);
		2385
		2386	/ev_idle_init (&w->idle, e,bed_idle_cb);/
		2387
2211	ev_start (EV_A_ (W)w, 1);	2388	ev_start (EV_A_ (W)w, 1);
2212	}	2389	}
2213		2390
2214	void	2391	void
2215	ev_embed_stop (EV_P_ ev_embed *w)	2392	ev_embed_stop (EV_P_ ev_embed *w)
…		…
2217	clear_pending (EV_A_ (W)w);	2394	clear_pending (EV_A_ (W)w);
2218	if (expect_false (!ev_is_active (w)))	2395	if (expect_false (!ev_is_active (w)))
2219	return;	2396	return;
2220		2397
2221	ev_io_stop (EV_A_ &w->io);	2398	ev_io_stop (EV_A_ &w->io);
		2399	ev_prepare_stop (EV_A_ &w->prepare);
2222		2400
2223	ev_stop (EV_A_ (W)w);	2401	ev_stop (EV_A_ (W)w);
2224	}	2402	}
2225	#endif	2403	#endif
2226		2404
…		…
2251		2429
2252	ev_stop (EV_A_ (W)w);	2430	ev_stop (EV_A_ (W)w);
2253	}	2431	}
2254	#endif	2432	#endif
2255		2433
		2434	#if EV_ASYNC_ENABLE
		2435	void
		2436	ev_async_start (EV_P_ ev_async *w)
		2437	{
		2438	if (expect_false (ev_is_active (w)))
		2439	return;
		2440
		2441	evpipe_init (EV_A);
		2442
		2443	ev_start (EV_A_ (W)w, ++asynccnt);
		2444	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2445	asyncs [asynccnt - 1] = w;
		2446	}
		2447
		2448	void
		2449	ev_async_stop (EV_P_ ev_async *w)
		2450	{
		2451	clear_pending (EV_A_ (W)w);
		2452	if (expect_false (!ev_is_active (w)))
		2453	return;
		2454
		2455	{
		2456	int active = ((W)w)->active;
		2457	asyncs [active - 1] = asyncs [--asynccnt];
		2458	((W)asyncs [active - 1])->active = active;
		2459	}
		2460
		2461	ev_stop (EV_A_ (W)w);
		2462	}
		2463
		2464	void
		2465	ev_async_send (EV_P_ ev_async *w)
		2466	{
		2467	w->sent = 1;
		2468	evpipe_write (EV_A_ 0, 1);
		2469	}
		2470	#endif
		2471
2256	/*****************************************************************************/	2472	/*****************************************************************************/
2257		2473
2258	struct ev_once	2474	struct ev_once
2259	{	2475	{
2260	ev_io io;	2476	ev_io io;
…		…
2315	ev_timer_set (&once->to, timeout, 0.);	2531	ev_timer_set (&once->to, timeout, 0.);
2316	ev_timer_start (EV_A_ &once->to);	2532	ev_timer_start (EV_A_ &once->to);
2317	}	2533	}
2318	}	2534	}
2319		2535
		2536	#if EV_MULTIPLICITY
		2537	#include "ev_wrap.h"
		2538	#endif
		2539
2320	#ifdef __cplusplus	2540	#ifdef __cplusplus
2321	}	2541	}
2322	#endif	2542	#endif
2323		2543

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Comparing libev/ev.c (file contents): Revision 1.185 by root, Fri Dec 14 18:22:30 2007 UTC vs. Revision 1.209 by root, Tue Feb 5 23:56:33 2008 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.185 by root, Fri Dec 14 18:22:30 2007 UTC vs.
Revision 1.209 by root, Tue Feb 5 23:56:33 2008 UTC