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

Comparing libev/ev.c (file contents):
Revision 1.188 by root, Thu Dec 20 07:12:57 2007 UTC vs.
Revision 1.211 by root, Tue Feb 19 17:09:28 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); /* watcher should not keep loop alive */
		816
		817	/* in case we received the signal before we had the chance of installing a handler */
		818	ev_feed_event (EV_A_ &pipeev, 0);
		819	}
		820	}
		821
		822	void inline_size
		823	evpipe_write (EV_P_ int sig, int async)
		824	{
		825	if (!(gotasync \|\| gotsig))
		826	{
		827	int old_errno = errno; /* save errno becaue write might clobber it */
		828
		829	if (sig) gotsig = 1;
		830	if (async) gotasync = 1;
		831
		832	write (evpipe [1], &old_errno, 1);
		833
		834	errno = old_errno;
		835	}
		836	}
		837
		838	static void
		839	pipecb (EV_P_ ev_io *iow, int revents)
		840	{
		841	{
		842	int dummy;
		843	read (evpipe [0], &dummy, 1);
		844	}
		845
		846	if (gotsig && ev_is_default_loop (EV_A))
		847	{
		848	int signum;
		849	gotsig = 0;
		850
		851	for (signum = signalmax; signum--; )
		852	if (signals [signum].gotsig)
		853	ev_feed_signal_event (EV_A_ signum + 1);
		854	}
		855
		856	#if EV_ASYNC_ENABLE
		857	if (gotasync)
		858	{
		859	int i;
		860	gotasync = 0;
		861
		862	for (i = asynccnt; i--; )
		863	if (asyncs [i]->sent)
		864	{
		865	asyncs [i]->sent = 0;
		866	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		867	}
		868	}
		869	#endif
801	}	870	}
802		871
803	/*****************************************************************************/	872	/*****************************************************************************/
804		873
		874	static void
		875	sighandler (int signum)
		876	{
		877	#if EV_MULTIPLICITY
		878	struct ev_loop *loop = &default_loop_struct;
		879	#endif
		880
		881	#if _WIN32
		882	signal (signum, sighandler);
		883	#endif
		884
		885	signals [signum - 1].gotsig = 1;
		886	evpipe_write (EV_A_ 1, 0);
		887	}
		888
		889	void noinline
		890	ev_feed_signal_event (EV_P_ int signum)
		891	{
		892	WL w;
		893
		894	#if EV_MULTIPLICITY
		895	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		896	#endif
		897
		898	--signum;
		899
		900	if (signum < 0 \|\| signum >= signalmax)
		901	return;
		902
		903	signals [signum].gotsig = 0;
		904
		905	for (w = signals [signum].head; w; w = w->next)
		906	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		907	}
		908
		909	/*****************************************************************************/
		910
805	static WL childs [EV_PID_HASHSIZE];	911	static WL childs [EV_PID_HASHSIZE];
806		912
807	#ifndef _WIN32	913	#ifndef _WIN32
808		914
809	static ev_signal childev;	915	static ev_signal childev;
		916
		917	#ifndef WIFCONTINUED
		918	# define WIFCONTINUED(status) 0
		919	#endif
810		920
811	void inline_speed	921	void inline_speed
812	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	922	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
813	{	923	{
814	ev_child *w;	924	ev_child *w;
		925	int traced = WIFSTOPPED (status) \|\| WIFCONTINUED (status);
815		926
816	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	927	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
		928	{
817	if (w->pid == pid \|\| !w->pid)	929	if ((w->pid == pid \|\| !w->pid)
		930	&& (!traced \|\| (w->flags & 1)))
818	{	931	{
819	ev_set_priority (w, ev_priority (sw)); /* need to do it now */	932	ev_set_priority (w, ev_priority (sw)); /* need to do it now */
820	w->rpid = pid;	933	w->rpid = pid;
821	w->rstatus = status;	934	w->rstatus = status;
822	ev_feed_event (EV_A_ (W)w, EV_CHILD);	935	ev_feed_event (EV_A_ (W)w, EV_CHILD);
823	}	936	}
		937	}
824	}	938	}
825		939
826	#ifndef WCONTINUED	940	#ifndef WCONTINUED
827	# define WCONTINUED 0	941	# define WCONTINUED 0
828	#endif	942	#endif
…		…
925	}	1039	}
926		1040
927	unsigned int	1041	unsigned int
928	ev_embeddable_backends (void)	1042	ev_embeddable_backends (void)
929	{	1043	{
930	return EVBACKEND_EPOLL	1044	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;
931	\| EVBACKEND_KQUEUE	1045
932	\| EVBACKEND_PORT;	1046	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1047	/* please fix it and tell me how to detect the fix */
		1048	flags &= ~EVBACKEND_EPOLL;
		1049
		1050	return flags;
933	}	1051	}
934		1052
935	unsigned int	1053	unsigned int
936	ev_backend (EV_P)	1054	ev_backend (EV_P)
937	{	1055	{
…		…
940		1058
941	unsigned int	1059	unsigned int
942	ev_loop_count (EV_P)	1060	ev_loop_count (EV_P)
943	{	1061	{
944	return loop_count;	1062	return loop_count;
		1063	}
		1064
		1065	void
		1066	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1067	{
		1068	io_blocktime = interval;
		1069	}
		1070
		1071	void
		1072	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1073	{
		1074	timeout_blocktime = interval;
945	}	1075	}
946		1076
947	static void noinline	1077	static void noinline
948	loop_init (EV_P_ unsigned int flags)	1078	loop_init (EV_P_ unsigned int flags)
949	{	1079	{
…		…
955	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1085	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
956	have_monotonic = 1;	1086	have_monotonic = 1;
957	}	1087	}
958	#endif	1088	#endif
959		1089
960	ev_rt_now = ev_time ();	1090	ev_rt_now = ev_time ();
961	mn_now = get_clock ();	1091	mn_now = get_clock ();
962	now_floor = mn_now;	1092	now_floor = mn_now;
963	rtmn_diff = ev_rt_now - mn_now;	1093	rtmn_diff = ev_rt_now - mn_now;
		1094
		1095	io_blocktime = 0.;
		1096	timeout_blocktime = 0.;
		1097	backend = 0;
		1098	backend_fd = -1;
		1099	gotasync = 0;
		1100	#if EV_USE_INOTIFY
		1101	fs_fd = -2;
		1102	#endif
964		1103
965	/* pid check not overridable via env */	1104	/* pid check not overridable via env */
966	#ifndef _WIN32	1105	#ifndef _WIN32
967	if (flags & EVFLAG_FORKCHECK)	1106	if (flags & EVFLAG_FORKCHECK)
968	curpid = getpid ();	1107	curpid = getpid ();
…		…
974	flags = atoi (getenv ("LIBEV_FLAGS"));	1113	flags = atoi (getenv ("LIBEV_FLAGS"));
975		1114
976	if (!(flags & 0x0000ffffUL))	1115	if (!(flags & 0x0000ffffUL))
977	flags \|= ev_recommended_backends ();	1116	flags \|= ev_recommended_backends ();
978		1117
979	backend = 0;
980	backend_fd = -1;
981	#if EV_USE_INOTIFY
982	fs_fd = -2;
983	#endif
984
985	#if EV_USE_PORT	1118	#if EV_USE_PORT
986	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1119	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
987	#endif	1120	#endif
988	#if EV_USE_KQUEUE	1121	#if EV_USE_KQUEUE
989	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1122	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
996	#endif	1129	#endif
997	#if EV_USE_SELECT	1130	#if EV_USE_SELECT
998	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1131	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
999	#endif	1132	#endif
1000		1133
1001	ev_init (&sigev, sigcb);	1134	ev_init (&pipeev, pipecb);
1002	ev_set_priority (&sigev, EV_MAXPRI);	1135	ev_set_priority (&pipeev, EV_MAXPRI);
1003	}	1136	}
1004	}	1137	}
1005		1138
1006	static void noinline	1139	static void noinline
1007	loop_destroy (EV_P)	1140	loop_destroy (EV_P)
1008	{	1141	{
1009	int i;	1142	int i;
		1143
		1144	if (ev_is_active (&pipeev))
		1145	{
		1146	ev_ref (EV_A); /* signal watcher */
		1147	ev_io_stop (EV_A_ &pipeev);
		1148
		1149	close (evpipe [0]); evpipe [0] = 0;
		1150	close (evpipe [1]); evpipe [1] = 0;
		1151	}
1010		1152
1011	#if EV_USE_INOTIFY	1153	#if EV_USE_INOTIFY
1012	if (fs_fd >= 0)	1154	if (fs_fd >= 0)
1013	close (fs_fd);	1155	close (fs_fd);
1014	#endif	1156	#endif
…		…
1051	#if EV_FORK_ENABLE	1193	#if EV_FORK_ENABLE
1052	array_free (fork, EMPTY);	1194	array_free (fork, EMPTY);
1053	#endif	1195	#endif
1054	array_free (prepare, EMPTY);	1196	array_free (prepare, EMPTY);
1055	array_free (check, EMPTY);	1197	array_free (check, EMPTY);
		1198	#if EV_ASYNC_ENABLE
		1199	array_free (async, EMPTY);
		1200	#endif
1056		1201
1057	backend = 0;	1202	backend = 0;
1058	}	1203	}
1059		1204
1060	void inline_size infy_fork (EV_P);	1205	void inline_size infy_fork (EV_P);
…		…
1073	#endif	1218	#endif
1074	#if EV_USE_INOTIFY	1219	#if EV_USE_INOTIFY
1075	infy_fork (EV_A);	1220	infy_fork (EV_A);
1076	#endif	1221	#endif
1077		1222
1078	if (ev_is_active (&sigev))	1223	if (ev_is_active (&pipeev))
1079	{	1224	{
1080	/* default loop */	1225	/* this "locks" the handlers against writing to the pipe */
		1226	gotsig = gotasync = 1;
1081		1227
1082	ev_ref (EV_A);	1228	ev_ref (EV_A);
1083	ev_io_stop (EV_A_ &sigev);	1229	ev_io_stop (EV_A_ &pipeev);
1084	close (sigpipe [0]);	1230	close (evpipe [0]);
1085	close (sigpipe [1]);	1231	close (evpipe [1]);
1086		1232
1087	while (pipe (sigpipe))
1088	syserr ("(libev) error creating pipe");
1089
1090	siginit (EV_A);	1233	evpipe_init (EV_A);
		1234	/* now iterate over everything, in case we missed something */
		1235	pipecb (EV_A_ &pipeev, EV_READ);
1091	}	1236	}
1092		1237
1093	postfork = 0;	1238	postfork = 0;
1094	}	1239	}
1095		1240
…		…
1117	}	1262	}
1118		1263
1119	void	1264	void
1120	ev_loop_fork (EV_P)	1265	ev_loop_fork (EV_P)
1121	{	1266	{
1122	postfork = 1;	1267	postfork = 1; /* must be in line with ev_default_fork */
1123	}	1268	}
1124		1269
1125	#endif	1270	#endif
1126		1271
1127	#if EV_MULTIPLICITY	1272	#if EV_MULTIPLICITY
…		…
1130	#else	1275	#else
1131	int	1276	int
1132	ev_default_loop (unsigned int flags)	1277	ev_default_loop (unsigned int flags)
1133	#endif	1278	#endif
1134	{	1279	{
1135	if (sigpipe [0] == sigpipe [1])
1136	if (pipe (sigpipe))
1137	return 0;
1138
1139	if (!ev_default_loop_ptr)	1280	if (!ev_default_loop_ptr)
1140	{	1281	{
1141	#if EV_MULTIPLICITY	1282	#if EV_MULTIPLICITY
1142	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1283	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1143	#else	1284	#else
…		…
1146		1287
1147	loop_init (EV_A_ flags);	1288	loop_init (EV_A_ flags);
1148		1289
1149	if (ev_backend (EV_A))	1290	if (ev_backend (EV_A))
1150	{	1291	{
1151	siginit (EV_A);
1152
1153	#ifndef _WIN32	1292	#ifndef _WIN32
1154	ev_signal_init (&childev, childcb, SIGCHLD);	1293	ev_signal_init (&childev, childcb, SIGCHLD);
1155	ev_set_priority (&childev, EV_MAXPRI);	1294	ev_set_priority (&childev, EV_MAXPRI);
1156	ev_signal_start (EV_A_ &childev);	1295	ev_signal_start (EV_A_ &childev);
1157	ev_unref (EV_A); /* child watcher should not keep loop alive */	1296	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1174	#ifndef _WIN32	1313	#ifndef _WIN32
1175	ev_ref (EV_A); /* child watcher */	1314	ev_ref (EV_A); /* child watcher */
1176	ev_signal_stop (EV_A_ &childev);	1315	ev_signal_stop (EV_A_ &childev);
1177	#endif	1316	#endif
1178		1317
1179	ev_ref (EV_A); /* signal watcher */
1180	ev_io_stop (EV_A_ &sigev);
1181
1182	close (sigpipe [0]); sigpipe [0] = 0;
1183	close (sigpipe [1]); sigpipe [1] = 0;
1184
1185	loop_destroy (EV_A);	1318	loop_destroy (EV_A);
1186	}	1319	}
1187		1320
1188	void	1321	void
1189	ev_default_fork (void)	1322	ev_default_fork (void)
…		…
1191	#if EV_MULTIPLICITY	1324	#if EV_MULTIPLICITY
1192	struct ev_loop *loop = ev_default_loop_ptr;	1325	struct ev_loop *loop = ev_default_loop_ptr;
1193	#endif	1326	#endif
1194		1327
1195	if (backend)	1328	if (backend)
1196	postfork = 1;	1329	postfork = 1; /* must be in line with ev_loop_fork */
1197	}	1330	}
1198		1331
1199	/*****************************************************************************/	1332	/*****************************************************************************/
1200		1333
1201	void	1334	void
…		…
1456	/* update fd-related kernel structures */	1589	/* update fd-related kernel structures */
1457	fd_reify (EV_A);	1590	fd_reify (EV_A);
1458		1591
1459	/* calculate blocking time */	1592	/* calculate blocking time */
1460	{	1593	{
1461	ev_tstamp block;	1594	ev_tstamp waittime = 0.;
		1595	ev_tstamp sleeptime = 0.;
1462		1596
1463	if (expect_false (flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt))	1597	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))
1464	block = 0.; /* do not block at all */
1465	else
1466	{	1598	{
1467	/* update time to cancel out callback processing overhead */	1599	/* update time to cancel out callback processing overhead */
1468	time_update (EV_A_ 1e100);	1600	time_update (EV_A_ 1e100);
1469		1601
1470	block = MAX_BLOCKTIME;	1602	waittime = MAX_BLOCKTIME;
1471		1603
1472	if (timercnt)	1604	if (timercnt)
1473	{	1605	{
1474	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1606	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1475	if (block > to) block = to;	1607	if (waittime > to) waittime = to;
1476	}	1608	}
1477		1609
1478	#if EV_PERIODIC_ENABLE	1610	#if EV_PERIODIC_ENABLE
1479	if (periodiccnt)	1611	if (periodiccnt)
1480	{	1612	{
1481	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1613	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1482	if (block > to) block = to;	1614	if (waittime > to) waittime = to;
1483	}	1615	}
1484	#endif	1616	#endif
1485		1617
1486	if (expect_false (block < 0.)) block = 0.;	1618	if (expect_false (waittime < timeout_blocktime))
		1619	waittime = timeout_blocktime;
		1620
		1621	sleeptime = waittime - backend_fudge;
		1622
		1623	if (expect_true (sleeptime > io_blocktime))
		1624	sleeptime = io_blocktime;
		1625
		1626	if (sleeptime)
		1627	{
		1628	ev_sleep (sleeptime);
		1629	waittime -= sleeptime;
		1630	}
1487	}	1631	}
1488		1632
1489	++loop_count;	1633	++loop_count;
1490	backend_poll (EV_A_ block);	1634	backend_poll (EV_A_ waittime);
1491		1635
1492	/* update ev_rt_now, do magic */	1636	/* update ev_rt_now, do magic */
1493	time_update (EV_A_ block);	1637	time_update (EV_A_ waittime + sleeptime);
1494	}	1638	}
1495		1639
1496	/* queue pending timers and reschedule them */	1640	/* queue pending timers and reschedule them */
1497	timers_reify (EV_A); /* relative timers called last */	1641	timers_reify (EV_A); /* relative timers called last */
1498	#if EV_PERIODIC_ENABLE	1642	#if EV_PERIODIC_ENABLE
…		…
1764	#endif	1908	#endif
1765	if (expect_false (ev_is_active (w)))	1909	if (expect_false (ev_is_active (w)))
1766	return;	1910	return;
1767		1911
1768	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1912	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1913
		1914	evpipe_init (EV_A);
1769		1915
1770	{	1916	{
1771	#ifndef _WIN32	1917	#ifndef _WIN32
1772	sigset_t full, prev;	1918	sigset_t full, prev;
1773	sigfillset (&full);	1919	sigfillset (&full);
…		…
2186	{	2332	{
2187	ev_loop (w->other, EVLOOP_NONBLOCK);	2333	ev_loop (w->other, EVLOOP_NONBLOCK);
2188	}	2334	}
2189		2335
2190	static void	2336	static void
2191	embed_cb (EV_P_ ev_io *io, int revents)	2337	embed_io_cb (EV_P_ ev_io *io, int revents)
2192	{	2338	{
2193	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));	2339	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
2194		2340
2195	if (ev_cb (w))	2341	if (ev_cb (w))
2196	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2342	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2197	else	2343	else
2198	ev_embed_sweep (loop, w);	2344	ev_loop (w->other, EVLOOP_NONBLOCK);
2199	}	2345	}
		2346
		2347	static void
		2348	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2349	{
		2350	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
		2351
		2352	{
		2353	struct ev_loop *loop = w->other;
		2354
		2355	while (fdchangecnt)
		2356	{
		2357	fd_reify (EV_A);
		2358	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2359	}
		2360	}
		2361	}
		2362
		2363	#if 0
		2364	static void
		2365	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2366	{
		2367	ev_idle_stop (EV_A_ idle);
		2368	}
		2369	#endif
2200		2370
2201	void	2371	void
2202	ev_embed_start (EV_P_ ev_embed *w)	2372	ev_embed_start (EV_P_ ev_embed *w)
2203	{	2373	{
2204	if (expect_false (ev_is_active (w)))	2374	if (expect_false (ev_is_active (w)))
2205	return;	2375	return;
2206		2376
2207	{	2377	{
2208	struct ev_loop *loop = w->other;	2378	struct ev_loop *loop = w->other;
2209	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2379	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2210	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2380	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2211	}	2381	}
2212		2382
2213	ev_set_priority (&w->io, ev_priority (w));	2383	ev_set_priority (&w->io, ev_priority (w));
2214	ev_io_start (EV_A_ &w->io);	2384	ev_io_start (EV_A_ &w->io);
2215		2385
		2386	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2387	ev_set_priority (&w->prepare, EV_MINPRI);
		2388	ev_prepare_start (EV_A_ &w->prepare);
		2389
		2390	/ev_idle_init (&w->idle, e,bed_idle_cb);/
		2391
2216	ev_start (EV_A_ (W)w, 1);	2392	ev_start (EV_A_ (W)w, 1);
2217	}	2393	}
2218		2394
2219	void	2395	void
2220	ev_embed_stop (EV_P_ ev_embed *w)	2396	ev_embed_stop (EV_P_ ev_embed *w)
…		…
2222	clear_pending (EV_A_ (W)w);	2398	clear_pending (EV_A_ (W)w);
2223	if (expect_false (!ev_is_active (w)))	2399	if (expect_false (!ev_is_active (w)))
2224	return;	2400	return;
2225		2401
2226	ev_io_stop (EV_A_ &w->io);	2402	ev_io_stop (EV_A_ &w->io);
		2403	ev_prepare_stop (EV_A_ &w->prepare);
2227		2404
2228	ev_stop (EV_A_ (W)w);	2405	ev_stop (EV_A_ (W)w);
2229	}	2406	}
2230	#endif	2407	#endif
2231		2408
…		…
2256		2433
2257	ev_stop (EV_A_ (W)w);	2434	ev_stop (EV_A_ (W)w);
2258	}	2435	}
2259	#endif	2436	#endif
2260		2437
		2438	#if EV_ASYNC_ENABLE
		2439	void
		2440	ev_async_start (EV_P_ ev_async *w)
		2441	{
		2442	if (expect_false (ev_is_active (w)))
		2443	return;
		2444
		2445	evpipe_init (EV_A);
		2446
		2447	ev_start (EV_A_ (W)w, ++asynccnt);
		2448	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2449	asyncs [asynccnt - 1] = w;
		2450	}
		2451
		2452	void
		2453	ev_async_stop (EV_P_ ev_async *w)
		2454	{
		2455	clear_pending (EV_A_ (W)w);
		2456	if (expect_false (!ev_is_active (w)))
		2457	return;
		2458
		2459	{
		2460	int active = ((W)w)->active;
		2461	asyncs [active - 1] = asyncs [--asynccnt];
		2462	((W)asyncs [active - 1])->active = active;
		2463	}
		2464
		2465	ev_stop (EV_A_ (W)w);
		2466	}
		2467
		2468	void
		2469	ev_async_send (EV_P_ ev_async *w)
		2470	{
		2471	w->sent = 1;
		2472	evpipe_write (EV_A_ 0, 1);
		2473	}
		2474	#endif
		2475
2261	/*****************************************************************************/	2476	/*****************************************************************************/
2262		2477
2263	struct ev_once	2478	struct ev_once
2264	{	2479	{
2265	ev_io io;	2480	ev_io io;

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Comparing libev/ev.c (file contents): Revision 1.188 by root, Thu Dec 20 07:12:57 2007 UTC vs. Revision 1.211 by root, Tue Feb 19 17:09:28 2008 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.188 by root, Thu Dec 20 07:12:57 2007 UTC vs.
Revision 1.211 by root, Tue Feb 19 17:09:28 2008 UTC