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

Comparing libev/ev.c (file contents):
Revision 1.159 by root, Sat Dec 1 19:48:36 2007 UTC vs.
Revision 1.167 by root, Sat Dec 8 04:02:31 2007 UTC

…		…
241		241
242	#define expect_false(expr) expect ((expr) != 0, 0)	242	#define expect_false(expr) expect ((expr) != 0, 0)
243	#define expect_true(expr) expect ((expr) != 0, 1)	243	#define expect_true(expr) expect ((expr) != 0, 1)
244		244
245	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	245	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
246	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	246	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
247		247
248	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	248	#define EMPTY /* required for microsofts broken pseudo-c compiler */
249	#define EMPTY2(a,b) /* used to suppress some warnings */	249	#define EMPTY2(a,b) /* used to suppress some warnings */
250		250
251	typedef ev_watcher *W;	251	typedef ev_watcher *W;
252	typedef ev_watcher_list *WL;	252	typedef ev_watcher_list *WL;
253	typedef ev_watcher_time *WT;	253	typedef ev_watcher_time *WT;
…		…
396	{	396	{
397	return ev_rt_now;	397	return ev_rt_now;
398	}	398	}
399	#endif	399	#endif
400		400
401	#define array_roundsize(type,n) (((n) \| 4) & ~3)	401	int inline_size
		402	array_nextsize (int elem, int cur, int cnt)
		403	{
		404	int ncur = cur + 1;
		405
		406	do
		407	ncur <<= 1;
		408	while (cnt > ncur);
		409
		410	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		411	if (elem * ncur > 4096)
		412	{
		413	ncur *= elem;
		414	ncur = (ncur + elem + 4095 + sizeof (void ) 4) & ~4095;
		415	ncur = ncur - sizeof (void ) 4;
		416	ncur /= elem;
		417	}
		418
		419	return ncur;
		420	}
		421
		422	inline_speed void *
		423	array_realloc (int elem, void base, int cur, int cnt)
		424	{
		425	cur = array_nextsize (elem, cur, cnt);
		426	return ev_realloc (base, elem * *cur);
		427	}
402		428
403	#define array_needsize(type,base,cur,cnt,init) \	429	#define array_needsize(type,base,cur,cnt,init) \
404	if (expect_false ((cnt) > cur)) \	430	if (expect_false ((cnt) > (cur))) \
405	{ \	431	{ \
406	int newcnt = cur; \	432	int ocur_ = (cur); \
407	do \	433	(base) = (type *)array_realloc \
408	{ \	434	(sizeof (type), (base), &(cur), (cnt)); \
409	newcnt = array_roundsize (type, newcnt << 1); \	435	init ((base) + (ocur_), (cur) - ocur_); \
410	} \
411	while ((cnt) > newcnt); \
412	\
413	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
414	init (base + cur, newcnt - cur); \
415	cur = newcnt; \
416	}	436	}
417		437
		438	#if 0
418	#define array_slim(type,stem) \	439	#define array_slim(type,stem) \
419	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	440	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
420	{ \	441	{ \
421	stem ## max = array_roundsize (stem ## cnt >> 1); \	442	stem ## max = array_roundsize (stem ## cnt >> 1); \
422	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\	443	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
423	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	444	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
424	}	445	}
		446	#endif
425		447
426	#define array_free(stem, idx) \	448	#define array_free(stem, idx) \
427	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	449	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
428		450
429	/*****************************************************************************/	451	/*****************************************************************************/
…		…
764	ev_child *w;	786	ev_child *w;
765		787
766	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	788	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
767	if (w->pid == pid \|\| !w->pid)	789	if (w->pid == pid \|\| !w->pid)
768	{	790	{
769	ev_priority (w) = ev_priority (sw); /* need to do it now */	791	ev_set_priority (w, ev_priority (sw)); /* need to do it now */
770	w->rpid = pid;	792	w->rpid = pid;
771	w->rstatus = status;	793	w->rstatus = status;
772	ev_feed_event (EV_A_ (W)w, EV_CHILD);	794	ev_feed_event (EV_A_ (W)w, EV_CHILD);
773	}	795	}
774	}	796	}
775		797
776	#ifndef WCONTINUED	798	#ifndef WCONTINUED
…		…
886	ev_backend (EV_P)	908	ev_backend (EV_P)
887	{	909	{
888	return backend;	910	return backend;
889	}	911	}
890		912
		913	unsigned int
		914	ev_loop_count (EV_P)
		915	{
		916	return loop_count;
		917	}
		918
891	static void noinline	919	static void noinline
892	loop_init (EV_P_ unsigned int flags)	920	loop_init (EV_P_ unsigned int flags)
893	{	921	{
894	if (!backend)	922	if (!backend)
895	{	923	{
…		…
975	#if EV_USE_SELECT	1003	#if EV_USE_SELECT
976	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1004	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
977	#endif	1005	#endif
978		1006
979	for (i = NUMPRI; i--; )	1007	for (i = NUMPRI; i--; )
		1008	{
980	array_free (pending, [i]);	1009	array_free (pending, [i]);
		1010	#if EV_IDLE_ENABLE
		1011	array_free (idle, [i]);
		1012	#endif
		1013	}
981		1014
982	/* have to use the microsoft-never-gets-it-right macro */	1015	/* have to use the microsoft-never-gets-it-right macro */
983	array_free (fdchange, EMPTY0);	1016	array_free (fdchange, EMPTY);
984	array_free (timer, EMPTY0);	1017	array_free (timer, EMPTY);
985	#if EV_PERIODIC_ENABLE	1018	#if EV_PERIODIC_ENABLE
986	array_free (periodic, EMPTY0);	1019	array_free (periodic, EMPTY);
987	#endif	1020	#endif
988	array_free (idle, EMPTY0);
989	array_free (prepare, EMPTY0);	1021	array_free (prepare, EMPTY);
990	array_free (check, EMPTY0);	1022	array_free (check, EMPTY);
991		1023
992	backend = 0;	1024	backend = 0;
993	}	1025	}
994		1026
995	void inline_size infy_fork (EV_P);	1027	void inline_size infy_fork (EV_P);
…		…
1130	if (backend)	1162	if (backend)
1131	postfork = 1;	1163	postfork = 1;
1132	}	1164	}
1133		1165
1134	/*****************************************************************************/	1166	/*****************************************************************************/
1135
1136	int inline_size
1137	any_pending (EV_P)
1138	{
1139	int pri;
1140
1141	for (pri = NUMPRI; pri--; )
1142	if (pendingcnt [pri])
1143	return 1;
1144
1145	return 0;
1146	}
1147		1167
1148	void inline_speed	1168	void inline_speed
1149	call_pending (EV_P)	1169	call_pending (EV_P)
1150	{	1170	{
1151	int pri;	1171	int pri;
…		…
1242	for (i = periodiccnt >> 1; i--; )	1262	for (i = periodiccnt >> 1; i--; )
1243	downheap ((WT *)periodics, periodiccnt, i);	1263	downheap ((WT *)periodics, periodiccnt, i);
1244	}	1264	}
1245	#endif	1265	#endif
1246		1266
		1267	#if EV_IDLE_ENABLE
		1268	void inline_size
		1269	idle_reify (EV_P)
		1270	{
		1271	if (expect_false (idleall))
		1272	{
		1273	int pri;
		1274
		1275	for (pri = NUMPRI; pri--; )
		1276	{
		1277	if (pendingcnt [pri])
		1278	break;
		1279
		1280	if (idlecnt [pri])
		1281	{
		1282	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1283	break;
		1284	}
		1285	}
		1286	}
		1287	}
		1288	#endif
		1289
1247	int inline_size	1290	int inline_size
1248	time_update_monotonic (EV_P)	1291	time_update_monotonic (EV_P)
1249	{	1292	{
1250	mn_now = get_clock ();	1293	mn_now = get_clock ();
1251		1294
…		…
1342	? EVUNLOOP_ONE	1385	? EVUNLOOP_ONE
1343	: EVUNLOOP_CANCEL;	1386	: EVUNLOOP_CANCEL;
1344		1387
1345	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	1388	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1346		1389
1347	for (;;)	1390	do
1348	{	1391	{
1349	#ifndef _WIN32	1392	#ifndef _WIN32
1350	if (expect_false (curpid)) /* penalise the forking check even more */	1393	if (expect_false (curpid)) /* penalise the forking check even more */
1351	if (expect_false (getpid () != curpid))	1394	if (expect_false (getpid () != curpid))
1352	{	1395	{
…		…
1384		1427
1385	/* calculate blocking time */	1428	/* calculate blocking time */
1386	{	1429	{
1387	ev_tstamp block;	1430	ev_tstamp block;
1388		1431
1389	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1432	if (expect_false (flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt))
1390	block = 0.; /* do not block at all */	1433	block = 0.; /* do not block at all */
1391	else	1434	else
1392	{	1435	{
1393	/* update time to cancel out callback processing overhead */	1436	/* update time to cancel out callback processing overhead */
1394	#if EV_USE_MONOTONIC	1437	#if EV_USE_MONOTONIC
…		…
1418	#endif	1461	#endif
1419		1462
1420	if (expect_false (block < 0.)) block = 0.;	1463	if (expect_false (block < 0.)) block = 0.;
1421	}	1464	}
1422		1465
		1466	++loop_count;
1423	backend_poll (EV_A_ block);	1467	backend_poll (EV_A_ block);
1424	}	1468	}
1425		1469
1426	/* update ev_rt_now, do magic */	1470	/* update ev_rt_now, do magic */
1427	time_update (EV_A);	1471	time_update (EV_A);
…		…
1430	timers_reify (EV_A); /* relative timers called last */	1474	timers_reify (EV_A); /* relative timers called last */
1431	#if EV_PERIODIC_ENABLE	1475	#if EV_PERIODIC_ENABLE
1432	periodics_reify (EV_A); /* absolute timers called first */	1476	periodics_reify (EV_A); /* absolute timers called first */
1433	#endif	1477	#endif
1434		1478
		1479	#if EV_IDLE_ENABLE
1435	/* queue idle watchers unless other events are pending */	1480	/* queue idle watchers unless other events are pending */
1436	if (idlecnt && !any_pending (EV_A))	1481	idle_reify (EV_A);
1437	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1482	#endif
1438		1483
1439	/* queue check watchers, to be executed first */	1484	/* queue check watchers, to be executed first */
1440	if (expect_false (checkcnt))	1485	if (expect_false (checkcnt))
1441	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1486	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1442		1487
1443	call_pending (EV_A);	1488	call_pending (EV_A);
1444		1489
1445	if (expect_false (loop_done))
1446	break;
1447	}	1490	}
		1491	while (expect_true (activecnt && !loop_done));
1448		1492
1449	if (loop_done == EVUNLOOP_ONE)	1493	if (loop_done == EVUNLOOP_ONE)
1450	loop_done = EVUNLOOP_CANCEL;	1494	loop_done = EVUNLOOP_CANCEL;
1451	}	1495	}
1452		1496
…		…
1479	head = &(*head)->next;	1523	head = &(*head)->next;
1480	}	1524	}
1481	}	1525	}
1482		1526
1483	void inline_speed	1527	void inline_speed
1484	ev_clear_pending (EV_P_ W w)	1528	clear_pending (EV_P_ W w)
1485	{	1529	{
1486	if (w->pending)	1530	if (w->pending)
1487	{	1531	{
1488	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1532	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1489	w->pending = 0;	1533	w->pending = 0;
1490	}	1534	}
1491	}	1535	}
1492		1536
		1537	int
		1538	ev_clear_pending (EV_P_ void *w)
		1539	{
		1540	W w_ = (W)w;
		1541	int pending = w_->pending;
		1542
		1543	if (!pending)
		1544	return 0;
		1545
		1546	w_->pending = 0;
		1547	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1548	p->w = 0;
		1549
		1550	return p->events;
		1551	}
		1552
		1553	void inline_size
		1554	pri_adjust (EV_P_ W w)
		1555	{
		1556	int pri = w->priority;
		1557	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1558	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1559	w->priority = pri;
		1560	}
		1561
1493	void inline_speed	1562	void inline_speed
1494	ev_start (EV_P_ W w, int active)	1563	ev_start (EV_P_ W w, int active)
1495	{	1564	{
1496	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1565	pri_adjust (EV_A_ w);
1497	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1498
1499	w->active = active;	1566	w->active = active;
1500	ev_ref (EV_A);	1567	ev_ref (EV_A);
1501	}	1568	}
1502		1569
1503	void inline_size	1570	void inline_size
…		…
1527	}	1594	}
1528		1595
1529	void	1596	void
1530	ev_io_stop (EV_P_ ev_io *w)	1597	ev_io_stop (EV_P_ ev_io *w)
1531	{	1598	{
1532	ev_clear_pending (EV_A_ (W)w);	1599	clear_pending (EV_A_ (W)w);
1533	if (expect_false (!ev_is_active (w)))	1600	if (expect_false (!ev_is_active (w)))
1534	return;	1601	return;
1535		1602
1536	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1603	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1537		1604
…		…
1560	}	1627	}
1561		1628
1562	void	1629	void
1563	ev_timer_stop (EV_P_ ev_timer *w)	1630	ev_timer_stop (EV_P_ ev_timer *w)
1564	{	1631	{
1565	ev_clear_pending (EV_A_ (W)w);	1632	clear_pending (EV_A_ (W)w);
1566	if (expect_false (!ev_is_active (w)))	1633	if (expect_false (!ev_is_active (w)))
1567	return;	1634	return;
1568		1635
1569	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1636	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1570		1637
…		…
1628	}	1695	}
1629		1696
1630	void	1697	void
1631	ev_periodic_stop (EV_P_ ev_periodic *w)	1698	ev_periodic_stop (EV_P_ ev_periodic *w)
1632	{	1699	{
1633	ev_clear_pending (EV_A_ (W)w);	1700	clear_pending (EV_A_ (W)w);
1634	if (expect_false (!ev_is_active (w)))	1701	if (expect_false (!ev_is_active (w)))
1635	return;	1702	return;
1636		1703
1637	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1704	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1638		1705
…		…
1692	}	1759	}
1693		1760
1694	void	1761	void
1695	ev_signal_stop (EV_P_ ev_signal *w)	1762	ev_signal_stop (EV_P_ ev_signal *w)
1696	{	1763	{
1697	ev_clear_pending (EV_A_ (W)w);	1764	clear_pending (EV_A_ (W)w);
1698	if (expect_false (!ev_is_active (w)))	1765	if (expect_false (!ev_is_active (w)))
1699	return;	1766	return;
1700		1767
1701	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1768	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1702	ev_stop (EV_A_ (W)w);	1769	ev_stop (EV_A_ (W)w);
…		…
1719	}	1786	}
1720		1787
1721	void	1788	void
1722	ev_child_stop (EV_P_ ev_child *w)	1789	ev_child_stop (EV_P_ ev_child *w)
1723	{	1790	{
1724	ev_clear_pending (EV_A_ (W)w);	1791	clear_pending (EV_A_ (W)w);
1725	if (expect_false (!ev_is_active (w)))	1792	if (expect_false (!ev_is_active (w)))
1726	return;	1793	return;
1727		1794
1728	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	1795	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1729	ev_stop (EV_A_ (W)w);	1796	ev_stop (EV_A_ (W)w);
…		…
1965	}	2032	}
1966		2033
1967	void	2034	void
1968	ev_stat_stop (EV_P_ ev_stat *w)	2035	ev_stat_stop (EV_P_ ev_stat *w)
1969	{	2036	{
1970	ev_clear_pending (EV_A_ (W)w);	2037	clear_pending (EV_A_ (W)w);
1971	if (expect_false (!ev_is_active (w)))	2038	if (expect_false (!ev_is_active (w)))
1972	return;	2039	return;
1973		2040
1974	#if EV_USE_INOTIFY	2041	#if EV_USE_INOTIFY
1975	infy_del (EV_A_ w);	2042	infy_del (EV_A_ w);
…		…
1978		2045
1979	ev_stop (EV_A_ (W)w);	2046	ev_stop (EV_A_ (W)w);
1980	}	2047	}
1981	#endif	2048	#endif
1982		2049
		2050	#if EV_IDLE_ENABLE
1983	void	2051	void
1984	ev_idle_start (EV_P_ ev_idle *w)	2052	ev_idle_start (EV_P_ ev_idle *w)
1985	{	2053	{
1986	if (expect_false (ev_is_active (w)))	2054	if (expect_false (ev_is_active (w)))
1987	return;	2055	return;
1988		2056
		2057	pri_adjust (EV_A_ (W)w);
		2058
		2059	{
		2060	int active = ++idlecnt [ABSPRI (w)];
		2061
		2062	++idleall;
1989	ev_start (EV_A_ (W)w, ++idlecnt);	2063	ev_start (EV_A_ (W)w, active);
		2064
1990	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);	2065	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
1991	idles [idlecnt - 1] = w;	2066	idles [ABSPRI (w)][active - 1] = w;
		2067	}
1992	}	2068	}
1993		2069
1994	void	2070	void
1995	ev_idle_stop (EV_P_ ev_idle *w)	2071	ev_idle_stop (EV_P_ ev_idle *w)
1996	{	2072	{
1997	ev_clear_pending (EV_A_ (W)w);	2073	clear_pending (EV_A_ (W)w);
1998	if (expect_false (!ev_is_active (w)))	2074	if (expect_false (!ev_is_active (w)))
1999	return;	2075	return;
2000		2076
2001	{	2077	{
2002	int active = ((W)w)->active;	2078	int active = ((W)w)->active;
2003	idles [active - 1] = idles [--idlecnt];	2079
		2080	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2004	((W)idles [active - 1])->active = active;	2081	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2082
		2083	ev_stop (EV_A_ (W)w);
		2084	--idleall;
2005	}	2085	}
2006
2007	ev_stop (EV_A_ (W)w);
2008	}	2086	}
		2087	#endif
2009		2088
2010	void	2089	void
2011	ev_prepare_start (EV_P_ ev_prepare *w)	2090	ev_prepare_start (EV_P_ ev_prepare *w)
2012	{	2091	{
2013	if (expect_false (ev_is_active (w)))	2092	if (expect_false (ev_is_active (w)))
…		…
2019	}	2098	}
2020		2099
2021	void	2100	void
2022	ev_prepare_stop (EV_P_ ev_prepare *w)	2101	ev_prepare_stop (EV_P_ ev_prepare *w)
2023	{	2102	{
2024	ev_clear_pending (EV_A_ (W)w);	2103	clear_pending (EV_A_ (W)w);
2025	if (expect_false (!ev_is_active (w)))	2104	if (expect_false (!ev_is_active (w)))
2026	return;	2105	return;
2027		2106
2028	{	2107	{
2029	int active = ((W)w)->active;	2108	int active = ((W)w)->active;
…		…
2046	}	2125	}
2047		2126
2048	void	2127	void
2049	ev_check_stop (EV_P_ ev_check *w)	2128	ev_check_stop (EV_P_ ev_check *w)
2050	{	2129	{
2051	ev_clear_pending (EV_A_ (W)w);	2130	clear_pending (EV_A_ (W)w);
2052	if (expect_false (!ev_is_active (w)))	2131	if (expect_false (!ev_is_active (w)))
2053	return;	2132	return;
2054		2133
2055	{	2134	{
2056	int active = ((W)w)->active;	2135	int active = ((W)w)->active;
…		…
2098	}	2177	}
2099		2178
2100	void	2179	void
2101	ev_embed_stop (EV_P_ ev_embed *w)	2180	ev_embed_stop (EV_P_ ev_embed *w)
2102	{	2181	{
2103	ev_clear_pending (EV_A_ (W)w);	2182	clear_pending (EV_A_ (W)w);
2104	if (expect_false (!ev_is_active (w)))	2183	if (expect_false (!ev_is_active (w)))
2105	return;	2184	return;
2106		2185
2107	ev_io_stop (EV_A_ &w->io);	2186	ev_io_stop (EV_A_ &w->io);
2108		2187
…		…
2123	}	2202	}
2124		2203
2125	void	2204	void
2126	ev_fork_stop (EV_P_ ev_fork *w)	2205	ev_fork_stop (EV_P_ ev_fork *w)
2127	{	2206	{
2128	ev_clear_pending (EV_A_ (W)w);	2207	clear_pending (EV_A_ (W)w);
2129	if (expect_false (!ev_is_active (w)))	2208	if (expect_false (!ev_is_active (w)))
2130	return;	2209	return;
2131		2210
2132	{	2211	{
2133	int active = ((W)w)->active;	2212	int active = ((W)w)->active;

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Comparing libev/ev.c (file contents): Revision 1.159 by root, Sat Dec 1 19:48:36 2007 UTC vs. Revision 1.167 by root, Sat Dec 8 04:02:31 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.159 by root, Sat Dec 1 19:48:36 2007 UTC vs.
Revision 1.167 by root, Sat Dec 8 04:02:31 2007 UTC