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

Comparing libev/ev.c (file contents):
Revision 1.184 by root, Wed Dec 12 05:30:52 2007 UTC vs.
Revision 1.218 by root, Sun Mar 23 00:05:03 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
…		…
202	#ifndef CLOCK_REALTIME	222	#ifndef CLOCK_REALTIME
203	# undef EV_USE_REALTIME	223	# undef EV_USE_REALTIME
204	# define EV_USE_REALTIME 0	224	# define EV_USE_REALTIME 0
205	#endif	225	#endif
206		226
		227	#if !EV_STAT_ENABLE
		228	# undef EV_USE_INOTIFY
		229	# define EV_USE_INOTIFY 0
		230	#endif
		231
		232	#if !EV_USE_NANOSLEEP
		233	# ifndef _WIN32
		234	# include <sys/select.h>
		235	# endif
		236	#endif
		237
		238	#if EV_USE_INOTIFY
		239	# include <sys/inotify.h>
		240	#endif
		241
207	#if EV_SELECT_IS_WINSOCKET	242	#if EV_SELECT_IS_WINSOCKET
208	# include <winsock.h>	243	# include <winsock.h>
209	#endif
210
211	#if !EV_STAT_ENABLE
212	# define EV_USE_INOTIFY 0
213	#endif
214
215	#if EV_USE_INOTIFY
216	# include <sys/inotify.h>
217	#endif	244	#endif
218		245
219	/**/	246	/**/
220		247
221	/*	248	/*
…		…
230		257
231	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	258	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
232	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	259	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
233	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds, TODO */	260	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds, TODO */
234		261
235	#if __GNUC__ >= 3	262	#if __GNUC__ >= 4
236	# define expect(expr,value) __builtin_expect ((expr),(value))	263	# define expect(expr,value) __builtin_expect ((expr),(value))
237	# define noinline __attribute__ ((noinline))	264	# define noinline __attribute__ ((noinline))
238	#else	265	#else
239	# define expect(expr,value) (expr)	266	# define expect(expr,value) (expr)
240	# define noinline	267	# define noinline
…		…
261		288
262	typedef ev_watcher *W;	289	typedef ev_watcher *W;
263	typedef ev_watcher_list *WL;	290	typedef ev_watcher_list *WL;
264	typedef ev_watcher_time *WT;	291	typedef ev_watcher_time *WT;
265		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 */
266	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
267		298
268	#ifdef _WIN32	299	#ifdef _WIN32
269	# include "ev_win32.c"	300	# include "ev_win32.c"
270	#endif	301	#endif
271		302
…		…
407	{	438	{
408	return ev_rt_now;	439	return ev_rt_now;
409	}	440	}
410	#endif	441	#endif
411		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 ((unsigned long)(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
412	int inline_size	470	int inline_size
413	array_nextsize (int elem, int cur, int cnt)	471	array_nextsize (int elem, int cur, int cnt)
414	{	472	{
415	int ncur = cur + 1;	473	int ncur = cur + 1;
416		474
…		…
542		600
543	#if EV_SELECT_IS_WINSOCKET	601	#if EV_SELECT_IS_WINSOCKET
544	if (events)	602	if (events)
545	{	603	{
546	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
547	anfd->handle = _get_osfhandle (fd);	608	anfd->handle = _get_osfhandle (fd);
		609	#endif
548	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));
549	}	611	}
550	#endif	612	#endif
551		613
552	{	614	{
…		…
701	/*****************************************************************************/	763	/*****************************************************************************/
702		764
703	typedef struct	765	typedef struct
704	{	766	{
705	WL head;	767	WL head;
706	sig_atomic_t volatile gotsig;	768	EV_ATOMIC_T gotsig;
707	} ANSIG;	769	} ANSIG;
708		770
709	static ANSIG *signals;	771	static ANSIG *signals;
710	static int signalmax;	772	static int signalmax;
711		773
712	static int sigpipe [2];	774	static EV_ATOMIC_T gotsig;
713	static sig_atomic_t volatile gotsig;
714	static ev_io sigev;
715		775
716	void inline_size	776	void inline_size
717	signals_init (ANSIG *base, int count)	777	signals_init (ANSIG *base, int count)
718	{	778	{
719	while (count--)	779	while (count--)
…		…
723		783
724	++base;	784	++base;
725	}	785	}
726	}	786	}
727		787
728	static void	788	/*****************************************************************************/
729	sighandler (int signum)
730	{
731	#if _WIN32
732	signal (signum, sighandler);
733	#endif
734
735	signals [signum - 1].gotsig = 1;
736
737	if (!gotsig)
738	{
739	int old_errno = errno;
740	gotsig = 1;
741	write (sigpipe [1], &signum, 1);
742	errno = old_errno;
743	}
744	}
745
746	void noinline
747	ev_feed_signal_event (EV_P_ int signum)
748	{
749	WL w;
750
751	#if EV_MULTIPLICITY
752	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
753	#endif
754
755	--signum;
756
757	if (signum < 0 \|\| signum >= signalmax)
758	return;
759
760	signals [signum].gotsig = 0;
761
762	for (w = signals [signum].head; w; w = w->next)
763	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
764	}
765
766	static void
767	sigcb (EV_P_ ev_io *iow, int revents)
768	{
769	int signum;
770
771	read (sigpipe [0], &revents, 1);
772	gotsig = 0;
773
774	for (signum = signalmax; signum--; )
775	if (signals [signum].gotsig)
776	ev_feed_signal_event (EV_A_ signum + 1);
777	}
778		789
779	void inline_speed	790	void inline_speed
780	fd_intern (int fd)	791	fd_intern (int fd)
781	{	792	{
782	#ifdef _WIN32	793	#ifdef _WIN32
…		…
787	fcntl (fd, F_SETFL, O_NONBLOCK);	798	fcntl (fd, F_SETFL, O_NONBLOCK);
788	#endif	799	#endif
789	}	800	}
790		801
791	static void noinline	802	static void noinline
792	siginit (EV_P)	803	evpipe_init (EV_P)
793	{	804	{
		805	if (!ev_is_active (&pipeev))
		806	{
		807	while (pipe (evpipe))
		808	syserr ("(libev) error creating signal/async pipe");
		809
794	fd_intern (sigpipe [0]);	810	fd_intern (evpipe [0]);
795	fd_intern (sigpipe [1]);	811	fd_intern (evpipe [1]);
796		812
797	ev_io_set (&sigev, sigpipe [0], EV_READ);	813	ev_io_set (&pipeev, evpipe [0], EV_READ);
798	ev_io_start (EV_A_ &sigev);	814	ev_io_start (EV_A_ &pipeev);
799	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_ EV_ATOMIC_T *flag)
		821	{
		822	if (!*flag)
		823	{
		824	int old_errno = errno; /* save errno because write might clobber it */
		825
		826	*flag = 1;
		827	write (evpipe [1], &old_errno, 1);
		828
		829	errno = old_errno;
		830	}
		831	}
		832
		833	static void
		834	pipecb (EV_P_ ev_io *iow, int revents)
		835	{
		836	{
		837	int dummy;
		838	read (evpipe [0], &dummy, 1);
		839	}
		840
		841	if (gotsig && ev_is_default_loop (EV_A))
		842	{
		843	int signum;
		844	gotsig = 0;
		845
		846	for (signum = signalmax; signum--; )
		847	if (signals [signum].gotsig)
		848	ev_feed_signal_event (EV_A_ signum + 1);
		849	}
		850
		851	#if EV_ASYNC_ENABLE
		852	if (gotasync)
		853	{
		854	int i;
		855	gotasync = 0;
		856
		857	for (i = asynccnt; i--; )
		858	if (asyncs [i]->sent)
		859	{
		860	asyncs [i]->sent = 0;
		861	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		862	}
		863	}
		864	#endif
800	}	865	}
801		866
802	/*****************************************************************************/	867	/*****************************************************************************/
803		868
		869	static void
		870	ev_sighandler (int signum)
		871	{
		872	#if EV_MULTIPLICITY
		873	struct ev_loop *loop = &default_loop_struct;
		874	#endif
		875
		876	#if _WIN32
		877	signal (signum, ev_sighandler);
		878	#endif
		879
		880	signals [signum - 1].gotsig = 1;
		881	evpipe_write (EV_A_ &gotsig);
		882	}
		883
		884	void noinline
		885	ev_feed_signal_event (EV_P_ int signum)
		886	{
		887	WL w;
		888
		889	#if EV_MULTIPLICITY
		890	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		891	#endif
		892
		893	--signum;
		894
		895	if (signum < 0 \|\| signum >= signalmax)
		896	return;
		897
		898	signals [signum].gotsig = 0;
		899
		900	for (w = signals [signum].head; w; w = w->next)
		901	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		902	}
		903
		904	/*****************************************************************************/
		905
804	static WL childs [EV_PID_HASHSIZE];	906	static WL childs [EV_PID_HASHSIZE];
805		907
806	#ifndef _WIN32	908	#ifndef _WIN32
807		909
808	static ev_signal childev;	910	static ev_signal childev;
809		911
		912	#ifndef WIFCONTINUED
		913	# define WIFCONTINUED(status) 0
		914	#endif
		915
810	void inline_speed	916	void inline_speed
811	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	917	child_reap (EV_P_ int chain, int pid, int status)
812	{	918	{
813	ev_child *w;	919	ev_child *w;
		920	int traced = WIFSTOPPED (status) \|\| WIFCONTINUED (status);
814		921
815	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	922	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
		923	{
816	if (w->pid == pid \|\| !w->pid)	924	if ((w->pid == pid \|\| !w->pid)
		925	&& (!traced \|\| (w->flags & 1)))
817	{	926	{
818	ev_set_priority (w, ev_priority (sw)); /* need to do it now */	927	ev_set_priority (w, EV_MAXPRI); /* need to do it now, this must be the same prio as the signal watcher itself */
819	w->rpid = pid;	928	w->rpid = pid;
820	w->rstatus = status;	929	w->rstatus = status;
821	ev_feed_event (EV_A_ (W)w, EV_CHILD);	930	ev_feed_event (EV_A_ (W)w, EV_CHILD);
822	}	931	}
		932	}
823	}	933	}
824		934
825	#ifndef WCONTINUED	935	#ifndef WCONTINUED
826	# define WCONTINUED 0	936	# define WCONTINUED 0
827	#endif	937	#endif
…		…
836	if (!WCONTINUED	946	if (!WCONTINUED
837	\|\| errno != EINVAL	947	\|\| errno != EINVAL
838	\|\| 0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED)))	948	\|\| 0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED)))
839	return;	949	return;
840		950
841	/* make sure we are called again until all childs have been reaped */	951	/* make sure we are called again until all children have been reaped */
842	/* we need to do it this way so that the callback gets called before we continue */	952	/* we need to do it this way so that the callback gets called before we continue */
843	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	953	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
844		954
845	child_reap (EV_A_ sw, pid, pid, status);	955	child_reap (EV_A_ pid, pid, status);
846	if (EV_PID_HASHSIZE > 1)	956	if (EV_PID_HASHSIZE > 1)
847	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	957	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
848	}	958	}
849		959
850	#endif	960	#endif
851		961
852	/*****************************************************************************/	962	/*****************************************************************************/
…		…
924	}	1034	}
925		1035
926	unsigned int	1036	unsigned int
927	ev_embeddable_backends (void)	1037	ev_embeddable_backends (void)
928	{	1038	{
929	return EVBACKEND_EPOLL	1039	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;
930	\| EVBACKEND_KQUEUE	1040
931	\| EVBACKEND_PORT;	1041	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1042	/* please fix it and tell me how to detect the fix */
		1043	flags &= ~EVBACKEND_EPOLL;
		1044
		1045	return flags;
932	}	1046	}
933		1047
934	unsigned int	1048	unsigned int
935	ev_backend (EV_P)	1049	ev_backend (EV_P)
936	{	1050	{
…		…
939		1053
940	unsigned int	1054	unsigned int
941	ev_loop_count (EV_P)	1055	ev_loop_count (EV_P)
942	{	1056	{
943	return loop_count;	1057	return loop_count;
		1058	}
		1059
		1060	void
		1061	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1062	{
		1063	io_blocktime = interval;
		1064	}
		1065
		1066	void
		1067	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1068	{
		1069	timeout_blocktime = interval;
944	}	1070	}
945		1071
946	static void noinline	1072	static void noinline
947	loop_init (EV_P_ unsigned int flags)	1073	loop_init (EV_P_ unsigned int flags)
948	{	1074	{
…		…
954	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1080	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
955	have_monotonic = 1;	1081	have_monotonic = 1;
956	}	1082	}
957	#endif	1083	#endif
958		1084
959	ev_rt_now = ev_time ();	1085	ev_rt_now = ev_time ();
960	mn_now = get_clock ();	1086	mn_now = get_clock ();
961	now_floor = mn_now;	1087	now_floor = mn_now;
962	rtmn_diff = ev_rt_now - mn_now;	1088	rtmn_diff = ev_rt_now - mn_now;
		1089
		1090	io_blocktime = 0.;
		1091	timeout_blocktime = 0.;
		1092	backend = 0;
		1093	backend_fd = -1;
		1094	gotasync = 0;
		1095	#if EV_USE_INOTIFY
		1096	fs_fd = -2;
		1097	#endif
963		1098
964	/* pid check not overridable via env */	1099	/* pid check not overridable via env */
965	#ifndef _WIN32	1100	#ifndef _WIN32
966	if (flags & EVFLAG_FORKCHECK)	1101	if (flags & EVFLAG_FORKCHECK)
967	curpid = getpid ();	1102	curpid = getpid ();
…		…
973	flags = atoi (getenv ("LIBEV_FLAGS"));	1108	flags = atoi (getenv ("LIBEV_FLAGS"));
974		1109
975	if (!(flags & 0x0000ffffUL))	1110	if (!(flags & 0x0000ffffUL))
976	flags \|= ev_recommended_backends ();	1111	flags \|= ev_recommended_backends ();
977		1112
978	backend = 0;
979	backend_fd = -1;
980	#if EV_USE_INOTIFY
981	fs_fd = -2;
982	#endif
983
984	#if EV_USE_PORT	1113	#if EV_USE_PORT
985	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1114	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
986	#endif	1115	#endif
987	#if EV_USE_KQUEUE	1116	#if EV_USE_KQUEUE
988	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1117	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
995	#endif	1124	#endif
996	#if EV_USE_SELECT	1125	#if EV_USE_SELECT
997	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1126	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
998	#endif	1127	#endif
999		1128
1000	ev_init (&sigev, sigcb);	1129	ev_init (&pipeev, pipecb);
1001	ev_set_priority (&sigev, EV_MAXPRI);	1130	ev_set_priority (&pipeev, EV_MAXPRI);
1002	}	1131	}
1003	}	1132	}
1004		1133
1005	static void noinline	1134	static void noinline
1006	loop_destroy (EV_P)	1135	loop_destroy (EV_P)
1007	{	1136	{
1008	int i;	1137	int i;
		1138
		1139	if (ev_is_active (&pipeev))
		1140	{
		1141	ev_ref (EV_A); /* signal watcher */
		1142	ev_io_stop (EV_A_ &pipeev);
		1143
		1144	close (evpipe [0]); evpipe [0] = 0;
		1145	close (evpipe [1]); evpipe [1] = 0;
		1146	}
1009		1147
1010	#if EV_USE_INOTIFY	1148	#if EV_USE_INOTIFY
1011	if (fs_fd >= 0)	1149	if (fs_fd >= 0)
1012	close (fs_fd);	1150	close (fs_fd);
1013	#endif	1151	#endif
…		…
1036	array_free (pending, [i]);	1174	array_free (pending, [i]);
1037	#if EV_IDLE_ENABLE	1175	#if EV_IDLE_ENABLE
1038	array_free (idle, [i]);	1176	array_free (idle, [i]);
1039	#endif	1177	#endif
1040	}	1178	}
		1179
		1180	ev_free (anfds); anfdmax = 0;
1041		1181
1042	/* have to use the microsoft-never-gets-it-right macro */	1182	/* have to use the microsoft-never-gets-it-right macro */
1043	array_free (fdchange, EMPTY);	1183	array_free (fdchange, EMPTY);
1044	array_free (timer, EMPTY);	1184	array_free (timer, EMPTY);
1045	#if EV_PERIODIC_ENABLE	1185	#if EV_PERIODIC_ENABLE
1046	array_free (periodic, EMPTY);	1186	array_free (periodic, EMPTY);
1047	#endif	1187	#endif
		1188	#if EV_FORK_ENABLE
		1189	array_free (fork, EMPTY);
		1190	#endif
1048	array_free (prepare, EMPTY);	1191	array_free (prepare, EMPTY);
1049	array_free (check, EMPTY);	1192	array_free (check, EMPTY);
		1193	#if EV_ASYNC_ENABLE
		1194	array_free (async, EMPTY);
		1195	#endif
1050		1196
1051	backend = 0;	1197	backend = 0;
1052	}	1198	}
1053		1199
1054	void inline_size infy_fork (EV_P);	1200	void inline_size infy_fork (EV_P);
…		…
1067	#endif	1213	#endif
1068	#if EV_USE_INOTIFY	1214	#if EV_USE_INOTIFY
1069	infy_fork (EV_A);	1215	infy_fork (EV_A);
1070	#endif	1216	#endif
1071		1217
1072	if (ev_is_active (&sigev))	1218	if (ev_is_active (&pipeev))
1073	{	1219	{
1074	/* default loop */	1220	/* this "locks" the handlers against writing to the pipe */
		1221	/* while we modify the fd vars */
		1222	gotsig = 1;
		1223	#if EV_ASYNC_ENABLE
		1224	gotasync = 1;
		1225	#endif
1075		1226
1076	ev_ref (EV_A);	1227	ev_ref (EV_A);
1077	ev_io_stop (EV_A_ &sigev);	1228	ev_io_stop (EV_A_ &pipeev);
1078	close (sigpipe [0]);	1229	close (evpipe [0]);
1079	close (sigpipe [1]);	1230	close (evpipe [1]);
1080		1231
1081	while (pipe (sigpipe))
1082	syserr ("(libev) error creating pipe");
1083
1084	siginit (EV_A);	1232	evpipe_init (EV_A);
		1233	/* now iterate over everything, in case we missed something */
		1234	pipecb (EV_A_ &pipeev, EV_READ);
1085	}	1235	}
1086		1236
1087	postfork = 0;	1237	postfork = 0;
1088	}	1238	}
1089		1239
…		…
1111	}	1261	}
1112		1262
1113	void	1263	void
1114	ev_loop_fork (EV_P)	1264	ev_loop_fork (EV_P)
1115	{	1265	{
1116	postfork = 1;	1266	postfork = 1; /* must be in line with ev_default_fork */
1117	}	1267	}
1118		1268
1119	#endif	1269	#endif
1120		1270
1121	#if EV_MULTIPLICITY	1271	#if EV_MULTIPLICITY
…		…
1124	#else	1274	#else
1125	int	1275	int
1126	ev_default_loop (unsigned int flags)	1276	ev_default_loop (unsigned int flags)
1127	#endif	1277	#endif
1128	{	1278	{
1129	if (sigpipe [0] == sigpipe [1])
1130	if (pipe (sigpipe))
1131	return 0;
1132
1133	if (!ev_default_loop_ptr)	1279	if (!ev_default_loop_ptr)
1134	{	1280	{
1135	#if EV_MULTIPLICITY	1281	#if EV_MULTIPLICITY
1136	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1282	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1137	#else	1283	#else
…		…
1140		1286
1141	loop_init (EV_A_ flags);	1287	loop_init (EV_A_ flags);
1142		1288
1143	if (ev_backend (EV_A))	1289	if (ev_backend (EV_A))
1144	{	1290	{
1145	siginit (EV_A);
1146
1147	#ifndef _WIN32	1291	#ifndef _WIN32
1148	ev_signal_init (&childev, childcb, SIGCHLD);	1292	ev_signal_init (&childev, childcb, SIGCHLD);
1149	ev_set_priority (&childev, EV_MAXPRI);	1293	ev_set_priority (&childev, EV_MAXPRI);
1150	ev_signal_start (EV_A_ &childev);	1294	ev_signal_start (EV_A_ &childev);
1151	ev_unref (EV_A); /* child watcher should not keep loop alive */	1295	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1168	#ifndef _WIN32	1312	#ifndef _WIN32
1169	ev_ref (EV_A); /* child watcher */	1313	ev_ref (EV_A); /* child watcher */
1170	ev_signal_stop (EV_A_ &childev);	1314	ev_signal_stop (EV_A_ &childev);
1171	#endif	1315	#endif
1172		1316
1173	ev_ref (EV_A); /* signal watcher */
1174	ev_io_stop (EV_A_ &sigev);
1175
1176	close (sigpipe [0]); sigpipe [0] = 0;
1177	close (sigpipe [1]); sigpipe [1] = 0;
1178
1179	loop_destroy (EV_A);	1317	loop_destroy (EV_A);
1180	}	1318	}
1181		1319
1182	void	1320	void
1183	ev_default_fork (void)	1321	ev_default_fork (void)
…		…
1185	#if EV_MULTIPLICITY	1323	#if EV_MULTIPLICITY
1186	struct ev_loop *loop = ev_default_loop_ptr;	1324	struct ev_loop *loop = ev_default_loop_ptr;
1187	#endif	1325	#endif
1188		1326
1189	if (backend)	1327	if (backend)
1190	postfork = 1;	1328	postfork = 1; /* must be in line with ev_loop_fork */
1191	}	1329	}
1192		1330
1193	/*****************************************************************************/	1331	/*****************************************************************************/
1194		1332
1195	void	1333	void
…		…
1450	/* update fd-related kernel structures */	1588	/* update fd-related kernel structures */
1451	fd_reify (EV_A);	1589	fd_reify (EV_A);
1452		1590
1453	/* calculate blocking time */	1591	/* calculate blocking time */
1454	{	1592	{
1455	ev_tstamp block;	1593	ev_tstamp waittime = 0.;
		1594	ev_tstamp sleeptime = 0.;
1456		1595
1457	if (expect_false (flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt))	1596	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))
1458	block = 0.; /* do not block at all */
1459	else
1460	{	1597	{
1461	/* update time to cancel out callback processing overhead */	1598	/* update time to cancel out callback processing overhead */
1462	time_update (EV_A_ 1e100);	1599	time_update (EV_A_ 1e100);
1463		1600
1464	block = MAX_BLOCKTIME;	1601	waittime = MAX_BLOCKTIME;
1465		1602
1466	if (timercnt)	1603	if (timercnt)
1467	{	1604	{
1468	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1605	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1469	if (block > to) block = to;	1606	if (waittime > to) waittime = to;
1470	}	1607	}
1471		1608
1472	#if EV_PERIODIC_ENABLE	1609	#if EV_PERIODIC_ENABLE
1473	if (periodiccnt)	1610	if (periodiccnt)
1474	{	1611	{
1475	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1612	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1476	if (block > to) block = to;	1613	if (waittime > to) waittime = to;
1477	}	1614	}
1478	#endif	1615	#endif
1479		1616
1480	if (expect_false (block < 0.)) block = 0.;	1617	if (expect_false (waittime < timeout_blocktime))
		1618	waittime = timeout_blocktime;
		1619
		1620	sleeptime = waittime - backend_fudge;
		1621
		1622	if (expect_true (sleeptime > io_blocktime))
		1623	sleeptime = io_blocktime;
		1624
		1625	if (sleeptime)
		1626	{
		1627	ev_sleep (sleeptime);
		1628	waittime -= sleeptime;
		1629	}
1481	}	1630	}
1482		1631
1483	++loop_count;	1632	++loop_count;
1484	backend_poll (EV_A_ block);	1633	backend_poll (EV_A_ waittime);
1485		1634
1486	/* update ev_rt_now, do magic */	1635	/* update ev_rt_now, do magic */
1487	time_update (EV_A_ block);	1636	time_update (EV_A_ waittime + sleeptime);
1488	}	1637	}
1489		1638
1490	/* queue pending timers and reschedule them */	1639	/* queue pending timers and reschedule them */
1491	timers_reify (EV_A); /* relative timers called last */	1640	timers_reify (EV_A); /* relative timers called last */
1492	#if EV_PERIODIC_ENABLE	1641	#if EV_PERIODIC_ENABLE
…		…
1759	if (expect_false (ev_is_active (w)))	1908	if (expect_false (ev_is_active (w)))
1760	return;	1909	return;
1761		1910
1762	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1911	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1763		1912
		1913	evpipe_init (EV_A);
		1914
1764	{	1915	{
1765	#ifndef _WIN32	1916	#ifndef _WIN32
1766	sigset_t full, prev;	1917	sigset_t full, prev;
1767	sigfillset (&full);	1918	sigfillset (&full);
1768	sigprocmask (SIG_SETMASK, &full, &prev);	1919	sigprocmask (SIG_SETMASK, &full, &prev);
…		…
1779	wlist_add (&signals [w->signum - 1].head, (WL)w);	1930	wlist_add (&signals [w->signum - 1].head, (WL)w);
1780		1931
1781	if (!((WL)w)->next)	1932	if (!((WL)w)->next)
1782	{	1933	{
1783	#if _WIN32	1934	#if _WIN32
1784	signal (w->signum, sighandler);	1935	signal (w->signum, ev_sighandler);
1785	#else	1936	#else
1786	struct sigaction sa;	1937	struct sigaction sa;
1787	sa.sa_handler = sighandler;	1938	sa.sa_handler = ev_sighandler;
1788	sigfillset (&sa.sa_mask);	1939	sigfillset (&sa.sa_mask);
1789	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1940	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1790	sigaction (w->signum, &sa, 0);	1941	sigaction (w->signum, &sa, 0);
1791	#endif	1942	#endif
1792	}	1943	}
…		…
2176		2327
2177	#if EV_EMBED_ENABLE	2328	#if EV_EMBED_ENABLE
2178	void noinline	2329	void noinline
2179	ev_embed_sweep (EV_P_ ev_embed *w)	2330	ev_embed_sweep (EV_P_ ev_embed *w)
2180	{	2331	{
2181	ev_loop (w->loop, EVLOOP_NONBLOCK);	2332	ev_loop (w->other, EVLOOP_NONBLOCK);
2182	}	2333	}
2183		2334
2184	static void	2335	static void
2185	embed_cb (EV_P_ ev_io *io, int revents)	2336	embed_io_cb (EV_P_ ev_io *io, int revents)
2186	{	2337	{
2187	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));	2338	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
2188		2339
2189	if (ev_cb (w))	2340	if (ev_cb (w))
2190	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2341	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2191	else	2342	else
2192	ev_embed_sweep (loop, w);	2343	ev_loop (w->other, EVLOOP_NONBLOCK);
2193	}	2344	}
		2345
		2346	static void
		2347	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2348	{
		2349	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
		2350
		2351	{
		2352	struct ev_loop *loop = w->other;
		2353
		2354	while (fdchangecnt)
		2355	{
		2356	fd_reify (EV_A);
		2357	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2358	}
		2359	}
		2360	}
		2361
		2362	#if 0
		2363	static void
		2364	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2365	{
		2366	ev_idle_stop (EV_A_ idle);
		2367	}
		2368	#endif
2194		2369
2195	void	2370	void
2196	ev_embed_start (EV_P_ ev_embed *w)	2371	ev_embed_start (EV_P_ ev_embed *w)
2197	{	2372	{
2198	if (expect_false (ev_is_active (w)))	2373	if (expect_false (ev_is_active (w)))
2199	return;	2374	return;
2200		2375
2201	{	2376	{
2202	struct ev_loop *loop = w->loop;	2377	struct ev_loop *loop = w->other;
2203	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2378	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2204	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2379	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2205	}	2380	}
2206		2381
2207	ev_set_priority (&w->io, ev_priority (w));	2382	ev_set_priority (&w->io, ev_priority (w));
2208	ev_io_start (EV_A_ &w->io);	2383	ev_io_start (EV_A_ &w->io);
2209		2384
		2385	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2386	ev_set_priority (&w->prepare, EV_MINPRI);
		2387	ev_prepare_start (EV_A_ &w->prepare);
		2388
		2389	/ev_idle_init (&w->idle, e,bed_idle_cb);/
		2390
2210	ev_start (EV_A_ (W)w, 1);	2391	ev_start (EV_A_ (W)w, 1);
2211	}	2392	}
2212		2393
2213	void	2394	void
2214	ev_embed_stop (EV_P_ ev_embed *w)	2395	ev_embed_stop (EV_P_ ev_embed *w)
…		…
2216	clear_pending (EV_A_ (W)w);	2397	clear_pending (EV_A_ (W)w);
2217	if (expect_false (!ev_is_active (w)))	2398	if (expect_false (!ev_is_active (w)))
2218	return;	2399	return;
2219		2400
2220	ev_io_stop (EV_A_ &w->io);	2401	ev_io_stop (EV_A_ &w->io);
		2402	ev_prepare_stop (EV_A_ &w->prepare);
2221		2403
2222	ev_stop (EV_A_ (W)w);	2404	ev_stop (EV_A_ (W)w);
2223	}	2405	}
2224	#endif	2406	#endif
2225		2407
…		…
2250		2432
2251	ev_stop (EV_A_ (W)w);	2433	ev_stop (EV_A_ (W)w);
2252	}	2434	}
2253	#endif	2435	#endif
2254		2436
		2437	#if EV_ASYNC_ENABLE
		2438	void
		2439	ev_async_start (EV_P_ ev_async *w)
		2440	{
		2441	if (expect_false (ev_is_active (w)))
		2442	return;
		2443
		2444	evpipe_init (EV_A);
		2445
		2446	ev_start (EV_A_ (W)w, ++asynccnt);
		2447	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2448	asyncs [asynccnt - 1] = w;
		2449	}
		2450
		2451	void
		2452	ev_async_stop (EV_P_ ev_async *w)
		2453	{
		2454	clear_pending (EV_A_ (W)w);
		2455	if (expect_false (!ev_is_active (w)))
		2456	return;
		2457
		2458	{
		2459	int active = ((W)w)->active;
		2460	asyncs [active - 1] = asyncs [--asynccnt];
		2461	((W)asyncs [active - 1])->active = active;
		2462	}
		2463
		2464	ev_stop (EV_A_ (W)w);
		2465	}
		2466
		2467	void
		2468	ev_async_send (EV_P_ ev_async *w)
		2469	{
		2470	w->sent = 1;
		2471	evpipe_write (EV_A_ &gotasync);
		2472	}
		2473	#endif
		2474
2255	/*****************************************************************************/	2475	/*****************************************************************************/
2256		2476
2257	struct ev_once	2477	struct ev_once
2258	{	2478	{
2259	ev_io io;	2479	ev_io io;
…		…
2314	ev_timer_set (&once->to, timeout, 0.);	2534	ev_timer_set (&once->to, timeout, 0.);
2315	ev_timer_start (EV_A_ &once->to);	2535	ev_timer_start (EV_A_ &once->to);
2316	}	2536	}
2317	}	2537	}
2318		2538
		2539	#if EV_MULTIPLICITY
		2540	#include "ev_wrap.h"
		2541	#endif
		2542
2319	#ifdef __cplusplus	2543	#ifdef __cplusplus
2320	}	2544	}
2321	#endif	2545	#endif
2322		2546

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Comparing libev/ev.c (file contents): Revision 1.184 by root, Wed Dec 12 05:30:52 2007 UTC vs. Revision 1.218 by root, Sun Mar 23 00:05:03 2008 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.184 by root, Wed Dec 12 05:30:52 2007 UTC vs.
Revision 1.218 by root, Sun Mar 23 00:05:03 2008 UTC