[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 1.213 by root, Tue Feb 19 19:13:50 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	}
		818
		819	void inline_size
		820	evpipe_write (EV_P_ int sig, int async)
		821	{
		822	int sent = gotasync \|\| gotsig;
		823
		824	if (sig) gotsig = 1;
		825	if (async) gotasync = 1;
		826
		827	if (!sent)
		828	{
		829	int old_errno = errno; /* save errno becaue write might clobber it */
		830	write (evpipe [1], &old_errno, 1);
		831	errno = old_errno;
		832	}
		833	}
		834
		835	static void
		836	pipecb (EV_P_ ev_io *iow, int revents)
		837	{
		838	{
		839	int dummy;
		840	read (evpipe [0], &dummy, 1);
		841	}
		842
		843	if (gotsig && ev_is_default_loop (EV_A))
		844	{
		845	int signum;
		846	gotsig = 0;
		847
		848	for (signum = signalmax; signum--; )
		849	if (signals [signum].gotsig)
		850	ev_feed_signal_event (EV_A_ signum + 1);
		851	}
		852
		853	#if EV_ASYNC_ENABLE
		854	if (gotasync)
		855	{
		856	int i;
		857	gotasync = 0;
		858
		859	for (i = asynccnt; i--; )
		860	if (asyncs [i]->sent)
		861	{
		862	asyncs [i]->sent = 0;
		863	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		864	}
		865	}
		866	#endif
801	}	867	}
802		868
803	/*****************************************************************************/	869	/*****************************************************************************/
804		870
		871	static void
		872	sighandler (int signum)
		873	{
		874	#if EV_MULTIPLICITY
		875	struct ev_loop *loop = &default_loop_struct;
		876	#endif
		877
		878	#if _WIN32
		879	signal (signum, sighandler);
		880	#endif
		881
		882	signals [signum - 1].gotsig = 1;
		883	evpipe_write (EV_A_ 1, 0);
		884	}
		885
		886	void noinline
		887	ev_feed_signal_event (EV_P_ int signum)
		888	{
		889	WL w;
		890
		891	#if EV_MULTIPLICITY
		892	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		893	#endif
		894
		895	--signum;
		896
		897	if (signum < 0 \|\| signum >= signalmax)
		898	return;
		899
		900	signals [signum].gotsig = 0;
		901
		902	for (w = signals [signum].head; w; w = w->next)
		903	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		904	}
		905
		906	/*****************************************************************************/
		907
805	static WL childs [EV_PID_HASHSIZE];	908	static WL childs [EV_PID_HASHSIZE];
806		909
807	#ifndef _WIN32	910	#ifndef _WIN32
808		911
809	static ev_signal childev;	912	static ev_signal childev;
		913
		914	#ifndef WIFCONTINUED
		915	# define WIFCONTINUED(status) 0
		916	#endif
810		917
811	void inline_speed	918	void inline_speed
812	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	919	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
813	{	920	{
814	ev_child *w;	921	ev_child *w;
		922	int traced = WIFSTOPPED (status) \|\| WIFCONTINUED (status);
815		923
816	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	924	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
		925	{
817	if (w->pid == pid \|\| !w->pid)	926	if ((w->pid == pid \|\| !w->pid)
		927	&& (!traced \|\| (w->flags & 1)))
818	{	928	{
819	ev_set_priority (w, ev_priority (sw)); /* need to do it now */	929	ev_set_priority (w, ev_priority (sw)); /* need to do it now */
820	w->rpid = pid;	930	w->rpid = pid;
821	w->rstatus = status;	931	w->rstatus = status;
822	ev_feed_event (EV_A_ (W)w, EV_CHILD);	932	ev_feed_event (EV_A_ (W)w, EV_CHILD);
823	}	933	}
		934	}
824	}	935	}
825		936
826	#ifndef WCONTINUED	937	#ifndef WCONTINUED
827	# define WCONTINUED 0	938	# define WCONTINUED 0
828	#endif	939	#endif
…		…
925	}	1036	}
926		1037
927	unsigned int	1038	unsigned int
928	ev_embeddable_backends (void)	1039	ev_embeddable_backends (void)
929	{	1040	{
930	return EVBACKEND_EPOLL	1041	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;
931	\| EVBACKEND_KQUEUE	1042
932	\| EVBACKEND_PORT;	1043	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1044	/* please fix it and tell me how to detect the fix */
		1045	flags &= ~EVBACKEND_EPOLL;
		1046
		1047	return flags;
933	}	1048	}
934		1049
935	unsigned int	1050	unsigned int
936	ev_backend (EV_P)	1051	ev_backend (EV_P)
937	{	1052	{
…		…
940		1055
941	unsigned int	1056	unsigned int
942	ev_loop_count (EV_P)	1057	ev_loop_count (EV_P)
943	{	1058	{
944	return loop_count;	1059	return loop_count;
		1060	}
		1061
		1062	void
		1063	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1064	{
		1065	io_blocktime = interval;
		1066	}
		1067
		1068	void
		1069	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1070	{
		1071	timeout_blocktime = interval;
945	}	1072	}
946		1073
947	static void noinline	1074	static void noinline
948	loop_init (EV_P_ unsigned int flags)	1075	loop_init (EV_P_ unsigned int flags)
949	{	1076	{
…		…
955	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1082	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
956	have_monotonic = 1;	1083	have_monotonic = 1;
957	}	1084	}
958	#endif	1085	#endif
959		1086
960	ev_rt_now = ev_time ();	1087	ev_rt_now = ev_time ();
961	mn_now = get_clock ();	1088	mn_now = get_clock ();
962	now_floor = mn_now;	1089	now_floor = mn_now;
963	rtmn_diff = ev_rt_now - mn_now;	1090	rtmn_diff = ev_rt_now - mn_now;
		1091
		1092	io_blocktime = 0.;
		1093	timeout_blocktime = 0.;
		1094	backend = 0;
		1095	backend_fd = -1;
		1096	gotasync = 0;
		1097	#if EV_USE_INOTIFY
		1098	fs_fd = -2;
		1099	#endif
964		1100
965	/* pid check not overridable via env */	1101	/* pid check not overridable via env */
966	#ifndef _WIN32	1102	#ifndef _WIN32
967	if (flags & EVFLAG_FORKCHECK)	1103	if (flags & EVFLAG_FORKCHECK)
968	curpid = getpid ();	1104	curpid = getpid ();
…		…
974	flags = atoi (getenv ("LIBEV_FLAGS"));	1110	flags = atoi (getenv ("LIBEV_FLAGS"));
975		1111
976	if (!(flags & 0x0000ffffUL))	1112	if (!(flags & 0x0000ffffUL))
977	flags \|= ev_recommended_backends ();	1113	flags \|= ev_recommended_backends ();
978		1114
979	backend = 0;
980	backend_fd = -1;
981	#if EV_USE_INOTIFY
982	fs_fd = -2;
983	#endif
984
985	#if EV_USE_PORT	1115	#if EV_USE_PORT
986	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1116	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
987	#endif	1117	#endif
988	#if EV_USE_KQUEUE	1118	#if EV_USE_KQUEUE
989	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1119	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
996	#endif	1126	#endif
997	#if EV_USE_SELECT	1127	#if EV_USE_SELECT
998	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1128	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
999	#endif	1129	#endif
1000		1130
1001	ev_init (&sigev, sigcb);	1131	ev_init (&pipeev, pipecb);
1002	ev_set_priority (&sigev, EV_MAXPRI);	1132	ev_set_priority (&pipeev, EV_MAXPRI);
1003	}	1133	}
1004	}	1134	}
1005		1135
1006	static void noinline	1136	static void noinline
1007	loop_destroy (EV_P)	1137	loop_destroy (EV_P)
1008	{	1138	{
1009	int i;	1139	int i;
		1140
		1141	if (ev_is_active (&pipeev))
		1142	{
		1143	ev_ref (EV_A); /* signal watcher */
		1144	ev_io_stop (EV_A_ &pipeev);
		1145
		1146	close (evpipe [0]); evpipe [0] = 0;
		1147	close (evpipe [1]); evpipe [1] = 0;
		1148	}
1010		1149
1011	#if EV_USE_INOTIFY	1150	#if EV_USE_INOTIFY
1012	if (fs_fd >= 0)	1151	if (fs_fd >= 0)
1013	close (fs_fd);	1152	close (fs_fd);
1014	#endif	1153	#endif
…		…
1051	#if EV_FORK_ENABLE	1190	#if EV_FORK_ENABLE
1052	array_free (fork, EMPTY);	1191	array_free (fork, EMPTY);
1053	#endif	1192	#endif
1054	array_free (prepare, EMPTY);	1193	array_free (prepare, EMPTY);
1055	array_free (check, EMPTY);	1194	array_free (check, EMPTY);
		1195	#if EV_ASYNC_ENABLE
		1196	array_free (async, EMPTY);
		1197	#endif
1056		1198
1057	backend = 0;	1199	backend = 0;
1058	}	1200	}
1059		1201
1060	void inline_size infy_fork (EV_P);	1202	void inline_size infy_fork (EV_P);
…		…
1073	#endif	1215	#endif
1074	#if EV_USE_INOTIFY	1216	#if EV_USE_INOTIFY
1075	infy_fork (EV_A);	1217	infy_fork (EV_A);
1076	#endif	1218	#endif
1077		1219
1078	if (ev_is_active (&sigev))	1220	if (ev_is_active (&pipeev))
1079	{	1221	{
1080	/* default loop */	1222	/* this "locks" the handlers against writing to the pipe */
		1223	/* while we modify the fd vars */
		1224	gotsig = 1;
		1225	#if EV_ASYNC_ENABLE
		1226	gotasync = 1;
		1227	#endif
1081		1228
1082	ev_ref (EV_A);	1229	ev_ref (EV_A);
1083	ev_io_stop (EV_A_ &sigev);	1230	ev_io_stop (EV_A_ &pipeev);
1084	close (sigpipe [0]);	1231	close (evpipe [0]);
1085	close (sigpipe [1]);	1232	close (evpipe [1]);
1086		1233
1087	while (pipe (sigpipe))
1088	syserr ("(libev) error creating pipe");
1089
1090	siginit (EV_A);	1234	evpipe_init (EV_A);
		1235	/* now iterate over everything, in case we missed something */
		1236	pipecb (EV_A_ &pipeev, EV_READ);
1091	}	1237	}
1092		1238
1093	postfork = 0;	1239	postfork = 0;
1094	}	1240	}
1095		1241
…		…
1117	}	1263	}
1118		1264
1119	void	1265	void
1120	ev_loop_fork (EV_P)	1266	ev_loop_fork (EV_P)
1121	{	1267	{
1122	postfork = 1;	1268	postfork = 1; /* must be in line with ev_default_fork */
1123	}	1269	}
1124		1270
1125	#endif	1271	#endif
1126		1272
1127	#if EV_MULTIPLICITY	1273	#if EV_MULTIPLICITY
…		…
1130	#else	1276	#else
1131	int	1277	int
1132	ev_default_loop (unsigned int flags)	1278	ev_default_loop (unsigned int flags)
1133	#endif	1279	#endif
1134	{	1280	{
1135	if (sigpipe [0] == sigpipe [1])
1136	if (pipe (sigpipe))
1137	return 0;
1138
1139	if (!ev_default_loop_ptr)	1281	if (!ev_default_loop_ptr)
1140	{	1282	{
1141	#if EV_MULTIPLICITY	1283	#if EV_MULTIPLICITY
1142	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1284	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1143	#else	1285	#else
…		…
1146		1288
1147	loop_init (EV_A_ flags);	1289	loop_init (EV_A_ flags);
1148		1290
1149	if (ev_backend (EV_A))	1291	if (ev_backend (EV_A))
1150	{	1292	{
1151	siginit (EV_A);
1152
1153	#ifndef _WIN32	1293	#ifndef _WIN32
1154	ev_signal_init (&childev, childcb, SIGCHLD);	1294	ev_signal_init (&childev, childcb, SIGCHLD);
1155	ev_set_priority (&childev, EV_MAXPRI);	1295	ev_set_priority (&childev, EV_MAXPRI);
1156	ev_signal_start (EV_A_ &childev);	1296	ev_signal_start (EV_A_ &childev);
1157	ev_unref (EV_A); /* child watcher should not keep loop alive */	1297	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1174	#ifndef _WIN32	1314	#ifndef _WIN32
1175	ev_ref (EV_A); /* child watcher */	1315	ev_ref (EV_A); /* child watcher */
1176	ev_signal_stop (EV_A_ &childev);	1316	ev_signal_stop (EV_A_ &childev);
1177	#endif	1317	#endif
1178		1318
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);	1319	loop_destroy (EV_A);
1186	}	1320	}
1187		1321
1188	void	1322	void
1189	ev_default_fork (void)	1323	ev_default_fork (void)
…		…
1191	#if EV_MULTIPLICITY	1325	#if EV_MULTIPLICITY
1192	struct ev_loop *loop = ev_default_loop_ptr;	1326	struct ev_loop *loop = ev_default_loop_ptr;
1193	#endif	1327	#endif
1194		1328
1195	if (backend)	1329	if (backend)
1196	postfork = 1;	1330	postfork = 1; /* must be in line with ev_loop_fork */
1197	}	1331	}
1198		1332
1199	/*****************************************************************************/	1333	/*****************************************************************************/
1200		1334
1201	void	1335	void
…		…
1456	/* update fd-related kernel structures */	1590	/* update fd-related kernel structures */
1457	fd_reify (EV_A);	1591	fd_reify (EV_A);
1458		1592
1459	/* calculate blocking time */	1593	/* calculate blocking time */
1460	{	1594	{
1461	ev_tstamp block;	1595	ev_tstamp waittime = 0.;
		1596	ev_tstamp sleeptime = 0.;
1462		1597
1463	if (expect_false (flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt))	1598	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))
1464	block = 0.; /* do not block at all */
1465	else
1466	{	1599	{
1467	/* update time to cancel out callback processing overhead */	1600	/* update time to cancel out callback processing overhead */
1468	time_update (EV_A_ 1e100);	1601	time_update (EV_A_ 1e100);
1469		1602
1470	block = MAX_BLOCKTIME;	1603	waittime = MAX_BLOCKTIME;
1471		1604
1472	if (timercnt)	1605	if (timercnt)
1473	{	1606	{
1474	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1607	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1475	if (block > to) block = to;	1608	if (waittime > to) waittime = to;
1476	}	1609	}
1477		1610
1478	#if EV_PERIODIC_ENABLE	1611	#if EV_PERIODIC_ENABLE
1479	if (periodiccnt)	1612	if (periodiccnt)
1480	{	1613	{
1481	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1614	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1482	if (block > to) block = to;	1615	if (waittime > to) waittime = to;
1483	}	1616	}
1484	#endif	1617	#endif
1485		1618
1486	if (expect_false (block < 0.)) block = 0.;	1619	if (expect_false (waittime < timeout_blocktime))
		1620	waittime = timeout_blocktime;
		1621
		1622	sleeptime = waittime - backend_fudge;
		1623
		1624	if (expect_true (sleeptime > io_blocktime))
		1625	sleeptime = io_blocktime;
		1626
		1627	if (sleeptime)
		1628	{
		1629	ev_sleep (sleeptime);
		1630	waittime -= sleeptime;
		1631	}
1487	}	1632	}
1488		1633
1489	++loop_count;	1634	++loop_count;
1490	backend_poll (EV_A_ block);	1635	backend_poll (EV_A_ waittime);
1491		1636
1492	/* update ev_rt_now, do magic */	1637	/* update ev_rt_now, do magic */
1493	time_update (EV_A_ block);	1638	time_update (EV_A_ waittime + sleeptime);
1494	}	1639	}
1495		1640
1496	/* queue pending timers and reschedule them */	1641	/* queue pending timers and reschedule them */
1497	timers_reify (EV_A); /* relative timers called last */	1642	timers_reify (EV_A); /* relative timers called last */
1498	#if EV_PERIODIC_ENABLE	1643	#if EV_PERIODIC_ENABLE
…		…
1764	#endif	1909	#endif
1765	if (expect_false (ev_is_active (w)))	1910	if (expect_false (ev_is_active (w)))
1766	return;	1911	return;
1767		1912
1768	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1913	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1914
		1915	evpipe_init (EV_A);
1769		1916
1770	{	1917	{
1771	#ifndef _WIN32	1918	#ifndef _WIN32
1772	sigset_t full, prev;	1919	sigset_t full, prev;
1773	sigfillset (&full);	1920	sigfillset (&full);
…		…
2186	{	2333	{
2187	ev_loop (w->other, EVLOOP_NONBLOCK);	2334	ev_loop (w->other, EVLOOP_NONBLOCK);
2188	}	2335	}
2189		2336
2190	static void	2337	static void
2191	embed_cb (EV_P_ ev_io *io, int revents)	2338	embed_io_cb (EV_P_ ev_io *io, int revents)
2192	{	2339	{
2193	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));	2340	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
2194		2341
2195	if (ev_cb (w))	2342	if (ev_cb (w))
2196	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2343	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2197	else	2344	else
2198	ev_embed_sweep (loop, w);	2345	ev_loop (w->other, EVLOOP_NONBLOCK);
2199	}	2346	}
		2347
		2348	static void
		2349	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2350	{
		2351	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
		2352
		2353	{
		2354	struct ev_loop *loop = w->other;
		2355
		2356	while (fdchangecnt)
		2357	{
		2358	fd_reify (EV_A);
		2359	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2360	}
		2361	}
		2362	}
		2363
		2364	#if 0
		2365	static void
		2366	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2367	{
		2368	ev_idle_stop (EV_A_ idle);
		2369	}
		2370	#endif
2200		2371
2201	void	2372	void
2202	ev_embed_start (EV_P_ ev_embed *w)	2373	ev_embed_start (EV_P_ ev_embed *w)
2203	{	2374	{
2204	if (expect_false (ev_is_active (w)))	2375	if (expect_false (ev_is_active (w)))
2205	return;	2376	return;
2206		2377
2207	{	2378	{
2208	struct ev_loop *loop = w->other;	2379	struct ev_loop *loop = w->other;
2209	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2380	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2210	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2381	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2211	}	2382	}
2212		2383
2213	ev_set_priority (&w->io, ev_priority (w));	2384	ev_set_priority (&w->io, ev_priority (w));
2214	ev_io_start (EV_A_ &w->io);	2385	ev_io_start (EV_A_ &w->io);
2215		2386
		2387	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2388	ev_set_priority (&w->prepare, EV_MINPRI);
		2389	ev_prepare_start (EV_A_ &w->prepare);
		2390
		2391	/ev_idle_init (&w->idle, e,bed_idle_cb);/
		2392
2216	ev_start (EV_A_ (W)w, 1);	2393	ev_start (EV_A_ (W)w, 1);
2217	}	2394	}
2218		2395
2219	void	2396	void
2220	ev_embed_stop (EV_P_ ev_embed *w)	2397	ev_embed_stop (EV_P_ ev_embed *w)
…		…
2222	clear_pending (EV_A_ (W)w);	2399	clear_pending (EV_A_ (W)w);
2223	if (expect_false (!ev_is_active (w)))	2400	if (expect_false (!ev_is_active (w)))
2224	return;	2401	return;
2225		2402
2226	ev_io_stop (EV_A_ &w->io);	2403	ev_io_stop (EV_A_ &w->io);
		2404	ev_prepare_stop (EV_A_ &w->prepare);
2227		2405
2228	ev_stop (EV_A_ (W)w);	2406	ev_stop (EV_A_ (W)w);
2229	}	2407	}
2230	#endif	2408	#endif
2231		2409
…		…
2256		2434
2257	ev_stop (EV_A_ (W)w);	2435	ev_stop (EV_A_ (W)w);
2258	}	2436	}
2259	#endif	2437	#endif
2260		2438
		2439	#if EV_ASYNC_ENABLE
		2440	void
		2441	ev_async_start (EV_P_ ev_async *w)
		2442	{
		2443	if (expect_false (ev_is_active (w)))
		2444	return;
		2445
		2446	evpipe_init (EV_A);
		2447
		2448	ev_start (EV_A_ (W)w, ++asynccnt);
		2449	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2450	asyncs [asynccnt - 1] = w;
		2451	}
		2452
		2453	void
		2454	ev_async_stop (EV_P_ ev_async *w)
		2455	{
		2456	clear_pending (EV_A_ (W)w);
		2457	if (expect_false (!ev_is_active (w)))
		2458	return;
		2459
		2460	{
		2461	int active = ((W)w)->active;
		2462	asyncs [active - 1] = asyncs [--asynccnt];
		2463	((W)asyncs [active - 1])->active = active;
		2464	}
		2465
		2466	ev_stop (EV_A_ (W)w);
		2467	}
		2468
		2469	void
		2470	ev_async_send (EV_P_ ev_async *w)
		2471	{
		2472	w->sent = 1;
		2473	evpipe_write (EV_A_ 0, 1);
		2474	}
		2475	#endif
		2476
2261	/*****************************************************************************/	2477	/*****************************************************************************/
2262		2478
2263	struct ev_once	2479	struct ev_once
2264	{	2480	{
2265	ev_io io;	2481	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 1.213 by root, Tue Feb 19 19:13:50 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 1.213 by root, Tue Feb 19 19:13:50 2008 UTC