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

Comparing libev/ev.c (file contents):
Revision 1.178 by root, Tue Dec 11 18:36:11 2007 UTC vs.
Revision 1.202 by root, Sat Dec 29 16:19:36 2007 UTC

…		…
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 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 sig_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 (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
…		…
476	pendings [pri][w_->pending - 1].w = w_;	534	pendings [pri][w_->pending - 1].w = w_;
477	pendings [pri][w_->pending - 1].events = revents;	535	pendings [pri][w_->pending - 1].events = revents;
478	}	536	}
479	}	537	}
480		538
481	void inline_size	539	void inline_speed
482	queue_events (EV_P_ W *events, int eventcnt, int type)	540	queue_events (EV_P_ W *events, int eventcnt, int type)
483	{	541	{
484	int i;	542	int i;
485		543
486	for (i = 0; i < eventcnt; ++i)	544	for (i = 0; i < eventcnt; ++i)
…		…
533	{	591	{
534	int fd = fdchanges [i];	592	int fd = fdchanges [i];
535	ANFD *anfd = anfds + fd;	593	ANFD *anfd = anfds + fd;
536	ev_io *w;	594	ev_io *w;
537		595
538	int events = 0;	596	unsigned char events = 0;
539		597
540	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)	598	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
541	events \|= w->events;	599	events \|= (unsigned char)w->events;
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
		614	{
		615	unsigned char o_events = anfd->events;
		616	unsigned char o_reify = anfd->reify;
		617
552	anfd->reify = 0;	618	anfd->reify = 0;
553
554	backend_modify (EV_A_ fd, anfd->events, events);
555	anfd->events = events;	619	anfd->events = events;
		620
		621	if (o_events != events \|\| o_reify & EV_IOFDSET)
		622	backend_modify (EV_A_ fd, o_events, events);
		623	}
556	}	624	}
557		625
558	fdchangecnt = 0;	626	fdchangecnt = 0;
559	}	627	}
560		628
561	void inline_size	629	void inline_size
562	fd_change (EV_P_ int fd)	630	fd_change (EV_P_ int fd, int flags)
563	{	631	{
564	if (expect_false (anfds [fd].reify))	632	unsigned char reify = anfds [fd].reify;
565	return;
566
567	anfds [fd].reify = 1;	633	anfds [fd].reify \|= flags;
568		634
		635	if (expect_true (!reify))
		636	{
569	++fdchangecnt;	637	++fdchangecnt;
570	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	638	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
571	fdchanges [fdchangecnt - 1] = fd;	639	fdchanges [fdchangecnt - 1] = fd;
		640	}
572	}	641	}
573		642
574	void inline_speed	643	void inline_speed
575	fd_kill (EV_P_ int fd)	644	fd_kill (EV_P_ int fd)
576	{	645	{
…		…
627		696
628	for (fd = 0; fd < anfdmax; ++fd)	697	for (fd = 0; fd < anfdmax; ++fd)
629	if (anfds [fd].events)	698	if (anfds [fd].events)
630	{	699	{
631	anfds [fd].events = 0;	700	anfds [fd].events = 0;
632	fd_change (EV_A_ fd);	701	fd_change (EV_A_ fd, EV_IOFDSET \| 1);
633	}	702	}
634	}	703	}
635		704
636	/*****************************************************************************/	705	/*****************************************************************************/
637		706
638	void inline_speed	707	void inline_speed
639	upheap (WT *heap, int k)	708	upheap (WT *heap, int k)
640	{	709	{
641	WT w = heap [k];	710	WT w = heap [k];
642		711
643	while (k && heap [k >> 1]->at > w->at)	712	while (k)
644	{	713	{
		714	int p = (k - 1) >> 1;
		715
		716	if (heap [p]->at <= w->at)
		717	break;
		718
645	heap [k] = heap [k >> 1];	719	heap [k] = heap [p];
646	((W)heap [k])->active = k + 1;	720	((W)heap [k])->active = k + 1;
647	k >>= 1;	721	k = p;
648	}	722	}
649		723
650	heap [k] = w;	724	heap [k] = w;
651	((W)heap [k])->active = k + 1;	725	((W)heap [k])->active = k + 1;
652
653	}	726	}
654		727
655	void inline_speed	728	void inline_speed
656	downheap (WT *heap, int N, int k)	729	downheap (WT *heap, int N, int k)
657	{	730	{
658	WT w = heap [k];	731	WT w = heap [k];
659		732
660	while (k < (N >> 1))	733	for (;;)
661	{	734	{
662	int j = k << 1;	735	int c = (k << 1) + 1;
663		736
664	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	737	if (c >= N)
665	++j;
666
667	if (w->at <= heap [j]->at)
668	break;	738	break;
669		739
		740	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		741	? 1 : 0;
		742
		743	if (w->at <= heap [c]->at)
		744	break;
		745
670	heap [k] = heap [j];	746	heap [k] = heap [c];
671	((W)heap [k])->active = k + 1;	747	((W)heap [k])->active = k + 1;
		748
672	k = j;	749	k = c;
673	}	750	}
674		751
675	heap [k] = w;	752	heap [k] = w;
676	((W)heap [k])->active = k + 1;	753	((W)heap [k])->active = k + 1;
677	}	754	}
…		…
784	ev_unref (EV_A); /* child watcher should not keep loop alive */	861	ev_unref (EV_A); /* child watcher should not keep loop alive */
785	}	862	}
786		863
787	/*****************************************************************************/	864	/*****************************************************************************/
788		865
789	static ev_child *childs [EV_PID_HASHSIZE];	866	static WL childs [EV_PID_HASHSIZE];
790		867
791	#ifndef _WIN32	868	#ifndef _WIN32
792		869
793	static ev_signal childev;	870	static ev_signal childev;
794		871
…		…
909	}	986	}
910		987
911	unsigned int	988	unsigned int
912	ev_embeddable_backends (void)	989	ev_embeddable_backends (void)
913	{	990	{
914	return EVBACKEND_EPOLL	991	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;
915	\| EVBACKEND_KQUEUE	992
916	\| EVBACKEND_PORT;	993	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		994	/* please fix it and tell me how to detect the fix */
		995	flags &= ~EVBACKEND_EPOLL;
		996
		997	return flags;
917	}	998	}
918		999
919	unsigned int	1000	unsigned int
920	ev_backend (EV_P)	1001	ev_backend (EV_P)
921	{	1002	{
…		…
924		1005
925	unsigned int	1006	unsigned int
926	ev_loop_count (EV_P)	1007	ev_loop_count (EV_P)
927	{	1008	{
928	return loop_count;	1009	return loop_count;
		1010	}
		1011
		1012	void
		1013	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1014	{
		1015	io_blocktime = interval;
		1016	}
		1017
		1018	void
		1019	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1020	{
		1021	timeout_blocktime = interval;
929	}	1022	}
930		1023
931	static void noinline	1024	static void noinline
932	loop_init (EV_P_ unsigned int flags)	1025	loop_init (EV_P_ unsigned int flags)
933	{	1026	{
…		…
944	ev_rt_now = ev_time ();	1037	ev_rt_now = ev_time ();
945	mn_now = get_clock ();	1038	mn_now = get_clock ();
946	now_floor = mn_now;	1039	now_floor = mn_now;
947	rtmn_diff = ev_rt_now - mn_now;	1040	rtmn_diff = ev_rt_now - mn_now;
948		1041
		1042	io_blocktime = 0.;
		1043	timeout_blocktime = 0.;
		1044
949	/* pid check not overridable via env */	1045	/* pid check not overridable via env */
950	#ifndef _WIN32	1046	#ifndef _WIN32
951	if (flags & EVFLAG_FORKCHECK)	1047	if (flags & EVFLAG_FORKCHECK)
952	curpid = getpid ();	1048	curpid = getpid ();
953	#endif	1049	#endif
…		…
1021	array_free (pending, [i]);	1117	array_free (pending, [i]);
1022	#if EV_IDLE_ENABLE	1118	#if EV_IDLE_ENABLE
1023	array_free (idle, [i]);	1119	array_free (idle, [i]);
1024	#endif	1120	#endif
1025	}	1121	}
		1122
		1123	ev_free (anfds); anfdmax = 0;
1026		1124
1027	/* have to use the microsoft-never-gets-it-right macro */	1125	/* have to use the microsoft-never-gets-it-right macro */
1028	array_free (fdchange, EMPTY);	1126	array_free (fdchange, EMPTY);
1029	array_free (timer, EMPTY);	1127	array_free (timer, EMPTY);
1030	#if EV_PERIODIC_ENABLE	1128	#if EV_PERIODIC_ENABLE
1031	array_free (periodic, EMPTY);	1129	array_free (periodic, EMPTY);
		1130	#endif
		1131	#if EV_FORK_ENABLE
		1132	array_free (fork, EMPTY);
1032	#endif	1133	#endif
1033	array_free (prepare, EMPTY);	1134	array_free (prepare, EMPTY);
1034	array_free (check, EMPTY);	1135	array_free (check, EMPTY);
1035		1136
1036	backend = 0;	1137	backend = 0;
…		…
1206	void inline_size	1307	void inline_size
1207	timers_reify (EV_P)	1308	timers_reify (EV_P)
1208	{	1309	{
1209	while (timercnt && ((WT)timers [0])->at <= mn_now)	1310	while (timercnt && ((WT)timers [0])->at <= mn_now)
1210	{	1311	{
1211	ev_timer *w = timers [0];	1312	ev_timer w = (ev_timer )timers [0];
1212		1313
1213	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/	1314	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/
1214		1315
1215	/* first reschedule or stop timer */	1316	/* first reschedule or stop timer */
1216	if (w->repeat)	1317	if (w->repeat)
…		…
1219		1320
1220	((WT)w)->at += w->repeat;	1321	((WT)w)->at += w->repeat;
1221	if (((WT)w)->at < mn_now)	1322	if (((WT)w)->at < mn_now)
1222	((WT)w)->at = mn_now;	1323	((WT)w)->at = mn_now;
1223		1324
1224	downheap ((WT *)timers, timercnt, 0);	1325	downheap (timers, timercnt, 0);
1225	}	1326	}
1226	else	1327	else
1227	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1328	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1228		1329
1229	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1330	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
…		…
1234	void inline_size	1335	void inline_size
1235	periodics_reify (EV_P)	1336	periodics_reify (EV_P)
1236	{	1337	{
1237	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1338	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1238	{	1339	{
1239	ev_periodic *w = periodics [0];	1340	ev_periodic w = (ev_periodic )periodics [0];
1240		1341
1241	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/	1342	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/
1242		1343
1243	/* first reschedule or stop timer */	1344	/* first reschedule or stop timer */
1244	if (w->reschedule_cb)	1345	if (w->reschedule_cb)
1245	{	1346	{
1246	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);	1347	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1247	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1348	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1248	downheap ((WT *)periodics, periodiccnt, 0);	1349	downheap (periodics, periodiccnt, 0);
1249	}	1350	}
1250	else if (w->interval)	1351	else if (w->interval)
1251	{	1352	{
1252	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	1353	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1253	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;	1354	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1254	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1355	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1255	downheap ((WT *)periodics, periodiccnt, 0);	1356	downheap (periodics, periodiccnt, 0);
1256	}	1357	}
1257	else	1358	else
1258	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1359	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1259		1360
1260	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1361	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
…		…
1267	int i;	1368	int i;
1268		1369
1269	/* adjust periodics after time jump */	1370	/* adjust periodics after time jump */
1270	for (i = 0; i < periodiccnt; ++i)	1371	for (i = 0; i < periodiccnt; ++i)
1271	{	1372	{
1272	ev_periodic *w = periodics [i];	1373	ev_periodic w = (ev_periodic )periodics [i];
1273		1374
1274	if (w->reschedule_cb)	1375	if (w->reschedule_cb)
1275	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1376	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1276	else if (w->interval)	1377	else if (w->interval)
1277	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	1378	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1278	}	1379	}
1279		1380
1280	/* now rebuild the heap */	1381	/* now rebuild the heap */
1281	for (i = periodiccnt >> 1; i--; )	1382	for (i = periodiccnt >> 1; i--; )
1282	downheap ((WT *)periodics, periodiccnt, i);	1383	downheap (periodics, periodiccnt, i);
1283	}	1384	}
1284	#endif	1385	#endif
1285		1386
1286	#if EV_IDLE_ENABLE	1387	#if EV_IDLE_ENABLE
1287	void inline_size	1388	void inline_size
…		…
1435	/* update fd-related kernel structures */	1536	/* update fd-related kernel structures */
1436	fd_reify (EV_A);	1537	fd_reify (EV_A);
1437		1538
1438	/* calculate blocking time */	1539	/* calculate blocking time */
1439	{	1540	{
1440	ev_tstamp block;	1541	ev_tstamp waittime = 0.;
		1542	ev_tstamp sleeptime = 0.;
1441		1543
1442	if (expect_false (flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt))	1544	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))
1443	block = 0.; /* do not block at all */
1444	else
1445	{	1545	{
1446	/* update time to cancel out callback processing overhead */	1546	/* update time to cancel out callback processing overhead */
1447	time_update (EV_A_ 1e100);	1547	time_update (EV_A_ 1e100);
1448		1548
1449	block = MAX_BLOCKTIME;	1549	waittime = MAX_BLOCKTIME;
1450		1550
1451	if (timercnt)	1551	if (timercnt)
1452	{	1552	{
1453	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1553	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1454	if (block > to) block = to;	1554	if (waittime > to) waittime = to;
1455	}	1555	}
1456		1556
1457	#if EV_PERIODIC_ENABLE	1557	#if EV_PERIODIC_ENABLE
1458	if (periodiccnt)	1558	if (periodiccnt)
1459	{	1559	{
1460	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1560	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1461	if (block > to) block = to;	1561	if (waittime > to) waittime = to;
1462	}	1562	}
1463	#endif	1563	#endif
1464		1564
1465	if (expect_false (block < 0.)) block = 0.;	1565	if (expect_false (waittime < timeout_blocktime))
		1566	waittime = timeout_blocktime;
		1567
		1568	sleeptime = waittime - backend_fudge;
		1569
		1570	if (expect_true (sleeptime > io_blocktime))
		1571	sleeptime = io_blocktime;
		1572
		1573	if (sleeptime)
		1574	{
		1575	ev_sleep (sleeptime);
		1576	waittime -= sleeptime;
		1577	}
1466	}	1578	}
1467		1579
1468	++loop_count;	1580	++loop_count;
1469	backend_poll (EV_A_ block);	1581	backend_poll (EV_A_ waittime);
1470		1582
1471	/* update ev_rt_now, do magic */	1583	/* update ev_rt_now, do magic */
1472	time_update (EV_A_ block);	1584	time_update (EV_A_ waittime + sleeptime);
1473	}	1585	}
1474		1586
1475	/* queue pending timers and reschedule them */	1587	/* queue pending timers and reschedule them */
1476	timers_reify (EV_A); /* relative timers called last */	1588	timers_reify (EV_A); /* relative timers called last */
1477	#if EV_PERIODIC_ENABLE	1589	#if EV_PERIODIC_ENABLE
…		…
1589		1701
1590	assert (("ev_io_start called with negative fd", fd >= 0));	1702	assert (("ev_io_start called with negative fd", fd >= 0));
1591		1703
1592	ev_start (EV_A_ (W)w, 1);	1704	ev_start (EV_A_ (W)w, 1);
1593	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1705	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1594	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1706	wlist_add (&anfds[fd].head, (WL)w);
1595		1707
1596	fd_change (EV_A_ fd);	1708	fd_change (EV_A_ fd, w->events & EV_IOFDSET \| 1);
		1709	w->events &= ~EV_IOFDSET;
1597	}	1710	}
1598		1711
1599	void noinline	1712	void noinline
1600	ev_io_stop (EV_P_ ev_io *w)	1713	ev_io_stop (EV_P_ ev_io *w)
1601	{	1714	{
…		…
1603	if (expect_false (!ev_is_active (w)))	1716	if (expect_false (!ev_is_active (w)))
1604	return;	1717	return;
1605		1718
1606	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1719	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1607		1720
1608	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1721	wlist_del (&anfds[w->fd].head, (WL)w);
1609	ev_stop (EV_A_ (W)w);	1722	ev_stop (EV_A_ (W)w);
1610		1723
1611	fd_change (EV_A_ w->fd);	1724	fd_change (EV_A_ w->fd, 1);
1612	}	1725	}
1613		1726
1614	void noinline	1727	void noinline
1615	ev_timer_start (EV_P_ ev_timer *w)	1728	ev_timer_start (EV_P_ ev_timer *w)
1616	{	1729	{
…		…
1620	((WT)w)->at += mn_now;	1733	((WT)w)->at += mn_now;
1621		1734
1622	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1735	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1623		1736
1624	ev_start (EV_A_ (W)w, ++timercnt);	1737	ev_start (EV_A_ (W)w, ++timercnt);
1625	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1738	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1626	timers [timercnt - 1] = w;	1739	timers [timercnt - 1] = (WT)w;
1627	upheap ((WT *)timers, timercnt - 1);	1740	upheap (timers, timercnt - 1);
1628		1741
1629	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/	1742	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/
1630	}	1743	}
1631		1744
1632	void noinline	1745	void noinline
…		…
1634	{	1747	{
1635	clear_pending (EV_A_ (W)w);	1748	clear_pending (EV_A_ (W)w);
1636	if (expect_false (!ev_is_active (w)))	1749	if (expect_false (!ev_is_active (w)))
1637	return;	1750	return;
1638		1751
1639	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1752	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1640		1753
1641	{	1754	{
1642	int active = ((W)w)->active;	1755	int active = ((W)w)->active;
1643		1756
1644	if (expect_true (--active < --timercnt))	1757	if (expect_true (--active < --timercnt))
1645	{	1758	{
1646	timers [active] = timers [timercnt];	1759	timers [active] = timers [timercnt];
1647	adjustheap ((WT *)timers, timercnt, active);	1760	adjustheap (timers, timercnt, active);
1648	}	1761	}
1649	}	1762	}
1650		1763
1651	((WT)w)->at -= mn_now;	1764	((WT)w)->at -= mn_now;
1652		1765
…		…
1659	if (ev_is_active (w))	1772	if (ev_is_active (w))
1660	{	1773	{
1661	if (w->repeat)	1774	if (w->repeat)
1662	{	1775	{
1663	((WT)w)->at = mn_now + w->repeat;	1776	((WT)w)->at = mn_now + w->repeat;
1664	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1777	adjustheap (timers, timercnt, ((W)w)->active - 1);
1665	}	1778	}
1666	else	1779	else
1667	ev_timer_stop (EV_A_ w);	1780	ev_timer_stop (EV_A_ w);
1668	}	1781	}
1669	else if (w->repeat)	1782	else if (w->repeat)
…		…
1690	}	1803	}
1691	else	1804	else
1692	((WT)w)->at = w->offset;	1805	((WT)w)->at = w->offset;
1693		1806
1694	ev_start (EV_A_ (W)w, ++periodiccnt);	1807	ev_start (EV_A_ (W)w, ++periodiccnt);
1695	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1808	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1696	periodics [periodiccnt - 1] = w;	1809	periodics [periodiccnt - 1] = (WT)w;
1697	upheap ((WT *)periodics, periodiccnt - 1);	1810	upheap (periodics, periodiccnt - 1);
1698		1811
1699	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/	1812	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/
1700	}	1813	}
1701		1814
1702	void noinline	1815	void noinline
…		…
1704	{	1817	{
1705	clear_pending (EV_A_ (W)w);	1818	clear_pending (EV_A_ (W)w);
1706	if (expect_false (!ev_is_active (w)))	1819	if (expect_false (!ev_is_active (w)))
1707	return;	1820	return;
1708		1821
1709	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1822	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1710		1823
1711	{	1824	{
1712	int active = ((W)w)->active;	1825	int active = ((W)w)->active;
1713		1826
1714	if (expect_true (--active < --periodiccnt))	1827	if (expect_true (--active < --periodiccnt))
1715	{	1828	{
1716	periodics [active] = periodics [periodiccnt];	1829	periodics [active] = periodics [periodiccnt];
1717	adjustheap ((WT *)periodics, periodiccnt, active);	1830	adjustheap (periodics, periodiccnt, active);
1718	}	1831	}
1719	}	1832	}
1720		1833
1721	ev_stop (EV_A_ (W)w);	1834	ev_stop (EV_A_ (W)w);
1722	}	1835	}
…		…
1743	if (expect_false (ev_is_active (w)))	1856	if (expect_false (ev_is_active (w)))
1744	return;	1857	return;
1745		1858
1746	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1859	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1747		1860
		1861	{
		1862	#ifndef _WIN32
		1863	sigset_t full, prev;
		1864	sigfillset (&full);
		1865	sigprocmask (SIG_SETMASK, &full, &prev);
		1866	#endif
		1867
		1868	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1869
		1870	#ifndef _WIN32
		1871	sigprocmask (SIG_SETMASK, &prev, 0);
		1872	#endif
		1873	}
		1874
1748	ev_start (EV_A_ (W)w, 1);	1875	ev_start (EV_A_ (W)w, 1);
1749	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1750	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1876	wlist_add (&signals [w->signum - 1].head, (WL)w);
1751		1877
1752	if (!((WL)w)->next)	1878	if (!((WL)w)->next)
1753	{	1879	{
1754	#if _WIN32	1880	#if _WIN32
1755	signal (w->signum, sighandler);	1881	signal (w->signum, sighandler);
…		…
1768	{	1894	{
1769	clear_pending (EV_A_ (W)w);	1895	clear_pending (EV_A_ (W)w);
1770	if (expect_false (!ev_is_active (w)))	1896	if (expect_false (!ev_is_active (w)))
1771	return;	1897	return;
1772		1898
1773	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1899	wlist_del (&signals [w->signum - 1].head, (WL)w);
1774	ev_stop (EV_A_ (W)w);	1900	ev_stop (EV_A_ (W)w);
1775		1901
1776	if (!signals [w->signum - 1].head)	1902	if (!signals [w->signum - 1].head)
1777	signal (w->signum, SIG_DFL);	1903	signal (w->signum, SIG_DFL);
1778	}	1904	}
…		…
1785	#endif	1911	#endif
1786	if (expect_false (ev_is_active (w)))	1912	if (expect_false (ev_is_active (w)))
1787	return;	1913	return;
1788		1914
1789	ev_start (EV_A_ (W)w, 1);	1915	ev_start (EV_A_ (W)w, 1);
1790	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	1916	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1791	}	1917	}
1792		1918
1793	void	1919	void
1794	ev_child_stop (EV_P_ ev_child *w)	1920	ev_child_stop (EV_P_ ev_child *w)
1795	{	1921	{
1796	clear_pending (EV_A_ (W)w);	1922	clear_pending (EV_A_ (W)w);
1797	if (expect_false (!ev_is_active (w)))	1923	if (expect_false (!ev_is_active (w)))
1798	return;	1924	return;
1799		1925
1800	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	1926	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1801	ev_stop (EV_A_ (W)w);	1927	ev_stop (EV_A_ (W)w);
1802	}	1928	}
1803		1929
1804	#if EV_STAT_ENABLE	1930	#if EV_STAT_ENABLE
1805		1931
…		…
2147		2273
2148	#if EV_EMBED_ENABLE	2274	#if EV_EMBED_ENABLE
2149	void noinline	2275	void noinline
2150	ev_embed_sweep (EV_P_ ev_embed *w)	2276	ev_embed_sweep (EV_P_ ev_embed *w)
2151	{	2277	{
2152	ev_loop (w->loop, EVLOOP_NONBLOCK);	2278	ev_loop (w->other, EVLOOP_NONBLOCK);
2153	}	2279	}
2154		2280
2155	static void	2281	static void
2156	embed_cb (EV_P_ ev_io *io, int revents)	2282	embed_io_cb (EV_P_ ev_io *io, int revents)
2157	{	2283	{
2158	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));	2284	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
2159		2285
2160	if (ev_cb (w))	2286	if (ev_cb (w))
2161	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2287	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2162	else	2288	else
2163	ev_embed_sweep (loop, w);	2289	ev_loop (w->other, EVLOOP_NONBLOCK);
2164	}	2290	}
		2291
		2292	static void
		2293	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2294	{
		2295	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
		2296
		2297	{
		2298	struct ev_loop *loop = w->other;
		2299
		2300	while (fdchangecnt)
		2301	{
		2302	fd_reify (EV_A);
		2303	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2304	}
		2305	}
		2306	}
		2307
		2308	#if 0
		2309	static void
		2310	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2311	{
		2312	ev_idle_stop (EV_A_ idle);
		2313	}
		2314	#endif
2165		2315
2166	void	2316	void
2167	ev_embed_start (EV_P_ ev_embed *w)	2317	ev_embed_start (EV_P_ ev_embed *w)
2168	{	2318	{
2169	if (expect_false (ev_is_active (w)))	2319	if (expect_false (ev_is_active (w)))
2170	return;	2320	return;
2171		2321
2172	{	2322	{
2173	struct ev_loop *loop = w->loop;	2323	struct ev_loop *loop = w->other;
2174	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2324	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2175	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2325	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2176	}	2326	}
2177		2327
2178	ev_set_priority (&w->io, ev_priority (w));	2328	ev_set_priority (&w->io, ev_priority (w));
2179	ev_io_start (EV_A_ &w->io);	2329	ev_io_start (EV_A_ &w->io);
2180		2330
		2331	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2332	ev_set_priority (&w->prepare, EV_MINPRI);
		2333	ev_prepare_start (EV_A_ &w->prepare);
		2334
		2335	/ev_idle_init (&w->idle, e,bed_idle_cb);/
		2336
2181	ev_start (EV_A_ (W)w, 1);	2337	ev_start (EV_A_ (W)w, 1);
2182	}	2338	}
2183		2339
2184	void	2340	void
2185	ev_embed_stop (EV_P_ ev_embed *w)	2341	ev_embed_stop (EV_P_ ev_embed *w)
…		…
2187	clear_pending (EV_A_ (W)w);	2343	clear_pending (EV_A_ (W)w);
2188	if (expect_false (!ev_is_active (w)))	2344	if (expect_false (!ev_is_active (w)))
2189	return;	2345	return;
2190		2346
2191	ev_io_stop (EV_A_ &w->io);	2347	ev_io_stop (EV_A_ &w->io);
		2348	ev_prepare_stop (EV_A_ &w->prepare);
2192		2349
2193	ev_stop (EV_A_ (W)w);	2350	ev_stop (EV_A_ (W)w);
2194	}	2351	}
2195	#endif	2352	#endif
2196		2353
…		…
2285	ev_timer_set (&once->to, timeout, 0.);	2442	ev_timer_set (&once->to, timeout, 0.);
2286	ev_timer_start (EV_A_ &once->to);	2443	ev_timer_start (EV_A_ &once->to);
2287	}	2444	}
2288	}	2445	}
2289		2446
		2447	#if EV_MULTIPLICITY
		2448	#include "ev_wrap.h"
		2449	#endif
		2450
2290	#ifdef __cplusplus	2451	#ifdef __cplusplus
2291	}	2452	}
2292	#endif	2453	#endif
2293		2454

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Comparing libev/ev.c (file contents): Revision 1.178 by root, Tue Dec 11 18:36:11 2007 UTC vs. Revision 1.202 by root, Sat Dec 29 16:19:36 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.178 by root, Tue Dec 11 18:36:11 2007 UTC vs.
Revision 1.202 by root, Sat Dec 29 16:19:36 2007 UTC